From 81db488ebe397ddba4e51e04c0719023ef18cf70 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Sun, 6 May 2012 01:46:56 +0200 Subject: Replace axTLS with PolarSSL as it does not handle secure connections well enough. --- axTLS/src/ssl/asn1.c | 565 ----------- axTLS/src/ssl/cert.h | 43 - axTLS/src/ssl/crypto_misc.h | 173 ---- axTLS/src/ssl/gen_cert.c | 364 ------- axTLS/src/ssl/loader.c | 478 ---------- axTLS/src/ssl/openssl.c | 323 ------- axTLS/src/ssl/os_port.c | 158 ---- axTLS/src/ssl/os_port.h | 208 ---- axTLS/src/ssl/p12.c | 483 ---------- axTLS/src/ssl/private_key.h | 54 -- axTLS/src/ssl/ssl.h | 499 ---------- axTLS/src/ssl/tls1.c | 2195 ------------------------------------------- axTLS/src/ssl/tls1.h | 295 ------ axTLS/src/ssl/tls1_clnt.c | 395 -------- axTLS/src/ssl/tls1_svr.c | 478 ---------- axTLS/src/ssl/version.h | 1 - axTLS/src/ssl/x509.c | 564 ----------- 17 files changed, 7276 deletions(-) delete mode 100644 axTLS/src/ssl/asn1.c delete mode 100644 axTLS/src/ssl/cert.h delete mode 100644 axTLS/src/ssl/crypto_misc.h delete mode 100644 axTLS/src/ssl/gen_cert.c delete mode 100644 axTLS/src/ssl/loader.c delete mode 100644 axTLS/src/ssl/openssl.c delete mode 100644 axTLS/src/ssl/os_port.c delete mode 100644 axTLS/src/ssl/os_port.h delete mode 100644 axTLS/src/ssl/p12.c delete mode 100644 axTLS/src/ssl/private_key.h delete mode 100644 axTLS/src/ssl/ssl.h delete mode 100644 axTLS/src/ssl/tls1.c delete mode 100644 axTLS/src/ssl/tls1.h delete mode 100644 axTLS/src/ssl/tls1_clnt.c delete mode 100644 axTLS/src/ssl/tls1_svr.c delete mode 100644 axTLS/src/ssl/version.h delete mode 100644 axTLS/src/ssl/x509.c (limited to 'axTLS/src/ssl') diff --git a/axTLS/src/ssl/asn1.c b/axTLS/src/ssl/asn1.c deleted file mode 100644 index cf8d5be..0000000 --- a/axTLS/src/ssl/asn1.c +++ /dev/null @@ -1,565 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * Some primitive asn methods for extraction ASN.1 data. - */ - -#include -#include -#include -#include -#include "os_port.h" -#include "crypto.h" -#include "crypto_misc.h" - -#define SIG_OID_PREFIX_SIZE 8 -#define SIG_IIS6_OID_SIZE 5 -#define SIG_SUBJECT_ALT_NAME_SIZE 3 - -/* Must be an RSA algorithm with either SHA1 or MD5 for verifying to work */ -static const uint8_t sig_oid_prefix[SIG_OID_PREFIX_SIZE] = -{ - 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01 -}; - -static const uint8_t sig_sha1WithRSAEncrypt[SIG_IIS6_OID_SIZE] = -{ - 0x2b, 0x0e, 0x03, 0x02, 0x1d -}; - -static const uint8_t sig_subject_alt_name[SIG_SUBJECT_ALT_NAME_SIZE] = -{ - 0x55, 0x1d, 0x11 -}; - -/* CN, O, OU */ -static const uint8_t g_dn_types[] = { 3, 10, 11 }; - -int get_asn1_length(const uint8_t *buf, int *offset) -{ - int len, i; - - if (!(buf[*offset] & 0x80)) /* short form */ - { - len = buf[(*offset)++]; - } - else /* long form */ - { - int length_bytes = buf[(*offset)++]&0x7f; - len = 0; - for (i = 0; i < length_bytes; i++) - { - len <<= 8; - len += buf[(*offset)++]; - } - } - - return len; -} - -/** - * Skip the ASN1.1 object type and its length. Get ready to read the object's - * data. - */ -int asn1_next_obj(const uint8_t *buf, int *offset, int obj_type) -{ - if (buf[*offset] != obj_type) - return X509_NOT_OK; - (*offset)++; - return get_asn1_length(buf, offset); -} - -/** - * Skip over an ASN.1 object type completely. Get ready to read the next - * object. - */ -int asn1_skip_obj(const uint8_t *buf, int *offset, int obj_type) -{ - int len; - - if (buf[*offset] != obj_type) - return X509_NOT_OK; - (*offset)++; - len = get_asn1_length(buf, offset); - *offset += len; - return 0; -} - -/** - * Read an integer value for ASN.1 data - * Note: This function allocates memory which must be freed by the user. - */ -int asn1_get_int(const uint8_t *buf, int *offset, uint8_t **object) -{ - int len; - - if ((len = asn1_next_obj(buf, offset, ASN1_INTEGER)) < 0) - goto end_int_array; - - if (len > 1 && buf[*offset] == 0x00) /* ignore the negative byte */ - { - len--; - (*offset)++; - } - - *object = (uint8_t *)malloc(len); - memcpy(*object, &buf[*offset], len); - *offset += len; - -end_int_array: - return len; -} - -/** - * Get all the RSA private key specifics from an ASN.1 encoded file - */ -int asn1_get_private_key(const uint8_t *buf, int len, RSA_CTX **rsa_ctx) -{ - int offset = 7; - uint8_t *modulus = NULL, *priv_exp = NULL, *pub_exp = NULL; - int mod_len, priv_len, pub_len; -#ifdef CONFIG_BIGINT_CRT - uint8_t *p = NULL, *q = NULL, *dP = NULL, *dQ = NULL, *qInv = NULL; - int p_len, q_len, dP_len, dQ_len, qInv_len; -#endif - - /* not in der format */ - if (buf[0] != ASN1_SEQUENCE) /* basic sanity check */ - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: This is not a valid ASN.1 file\n"); -#endif - return X509_INVALID_PRIV_KEY; - } - - /* initialise the RNG */ - RNG_initialize(buf, len); - - mod_len = asn1_get_int(buf, &offset, &modulus); - pub_len = asn1_get_int(buf, &offset, &pub_exp); - priv_len = asn1_get_int(buf, &offset, &priv_exp); - - if (mod_len <= 0 || pub_len <= 0 || priv_len <= 0) - return X509_INVALID_PRIV_KEY; - -#ifdef CONFIG_BIGINT_CRT - p_len = asn1_get_int(buf, &offset, &p); - q_len = asn1_get_int(buf, &offset, &q); - dP_len = asn1_get_int(buf, &offset, &dP); - dQ_len = asn1_get_int(buf, &offset, &dQ); - qInv_len = asn1_get_int(buf, &offset, &qInv); - - if (p_len <= 0 || q_len <= 0 || dP_len <= 0 || dQ_len <= 0 || qInv_len <= 0) - return X509_INVALID_PRIV_KEY; - - RSA_priv_key_new(rsa_ctx, - modulus, mod_len, pub_exp, pub_len, priv_exp, priv_len, - p, p_len, q, p_len, dP, dP_len, dQ, dQ_len, qInv, qInv_len); - - free(p); - free(q); - free(dP); - free(dQ); - free(qInv); -#else - RSA_priv_key_new(rsa_ctx, - modulus, mod_len, pub_exp, pub_len, priv_exp, priv_len); -#endif - - free(modulus); - free(priv_exp); - free(pub_exp); - return X509_OK; -} - -/** - * Get the time of a certificate. Ignore hours/minutes/seconds. - */ -static int asn1_get_utc_time(const uint8_t *buf, int *offset, time_t *t) -{ - int ret = X509_NOT_OK, len, t_offset; - struct tm tm; - - if (buf[(*offset)++] != ASN1_UTC_TIME) - goto end_utc_time; - - len = get_asn1_length(buf, offset); - t_offset = *offset; - - memset(&tm, 0, sizeof(struct tm)); - tm.tm_year = (buf[t_offset] - '0')*10 + (buf[t_offset+1] - '0'); - - if (tm.tm_year <= 50) /* 1951-2050 thing */ - { - tm.tm_year += 100; - } - - tm.tm_mon = (buf[t_offset+2] - '0')*10 + (buf[t_offset+3] - '0') - 1; - tm.tm_mday = (buf[t_offset+4] - '0')*10 + (buf[t_offset+5] - '0'); - *t = mktime(&tm); - *offset += len; - ret = X509_OK; - -end_utc_time: - return ret; -} - -/** - * Get the version type of a certificate (which we don't actually care about) - */ -int asn1_version(const uint8_t *cert, int *offset, X509_CTX *x509_ctx) -{ - int ret = X509_NOT_OK; - - (*offset) += 2; /* get past explicit tag */ - if (asn1_skip_obj(cert, offset, ASN1_INTEGER)) - goto end_version; - - ret = X509_OK; -end_version: - return ret; -} - -/** - * Retrieve the notbefore and notafter certificate times. - */ -int asn1_validity(const uint8_t *cert, int *offset, X509_CTX *x509_ctx) -{ - return (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0 || - asn1_get_utc_time(cert, offset, &x509_ctx->not_before) || - asn1_get_utc_time(cert, offset, &x509_ctx->not_after)); -} - -/** - * Get the components of a distinguished name - */ -static int asn1_get_oid_x520(const uint8_t *buf, int *offset) -{ - int dn_type = 0; - int len; - - if ((len = asn1_next_obj(buf, offset, ASN1_OID)) < 0) - goto end_oid; - - /* expect a sequence of 2.5.4.[x] where x is a one of distinguished name - components we are interested in. */ - if (len == 3 && buf[(*offset)++] == 0x55 && buf[(*offset)++] == 0x04) - dn_type = buf[(*offset)++]; - else - { - *offset += len; /* skip over it */ - } - -end_oid: - return dn_type; -} - -/** - * Obtain an ASN.1 printable string type. - */ -static int asn1_get_printable_str(const uint8_t *buf, int *offset, char **str) -{ - int len = X509_NOT_OK; - - /* some certs have this awful crud in them for some reason */ - if (buf[*offset] != ASN1_PRINTABLE_STR && - buf[*offset] != ASN1_PRINTABLE_STR2 && - buf[*offset] != ASN1_TELETEX_STR && - buf[*offset] != ASN1_IA5_STR && - buf[*offset] != ASN1_UNICODE_STR) - goto end_pnt_str; - - (*offset)++; - len = get_asn1_length(buf, offset); - - if (buf[*offset - 1] == ASN1_UNICODE_STR) - { - int i; - *str = (char *)malloc(len/2+1); /* allow for null */ - - for (i = 0; i < len; i += 2) - (*str)[i/2] = buf[*offset + i + 1]; - - (*str)[len/2] = 0; /* null terminate */ - } - else - { - *str = (char *)malloc(len+1); /* allow for null */ - memcpy(*str, &buf[*offset], len); - (*str)[len] = 0; /* null terminate */ - } - - *offset += len; - -end_pnt_str: - return len; -} - -/** - * Get the subject name (or the issuer) of a certificate. - */ -int asn1_name(const uint8_t *cert, int *offset, char *dn[]) -{ - int ret = X509_NOT_OK; - int dn_type; - char *tmp; - - if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0) - goto end_name; - - while (asn1_next_obj(cert, offset, ASN1_SET) >= 0) - { - int i, found = 0; - - if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0 || - (dn_type = asn1_get_oid_x520(cert, offset)) < 0) - goto end_name; - - tmp = NULL; - - if (asn1_get_printable_str(cert, offset, &tmp) < 0) - { - free(tmp); - goto end_name; - } - - /* find the distinguished named type */ - for (i = 0; i < X509_NUM_DN_TYPES; i++) - { - if (dn_type == g_dn_types[i]) - { - if (dn[i] == NULL) - { - dn[i] = tmp; - found = 1; - break; - } - } - } - - if (found == 0) /* not found so get rid of it */ - { - free(tmp); - } - } - - ret = X509_OK; -end_name: - return ret; -} - -/** - * Read the modulus and public exponent of a certificate. - */ -int asn1_public_key(const uint8_t *cert, int *offset, X509_CTX *x509_ctx) -{ - int ret = X509_NOT_OK, mod_len, pub_len; - uint8_t *modulus = NULL, *pub_exp = NULL; - - if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(cert, offset, ASN1_SEQUENCE) || - asn1_next_obj(cert, offset, ASN1_BIT_STRING) < 0) - goto end_pub_key; - - (*offset)++; /* ignore the padding bit field */ - - if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0) - goto end_pub_key; - - mod_len = asn1_get_int(cert, offset, &modulus); - pub_len = asn1_get_int(cert, offset, &pub_exp); - - RSA_pub_key_new(&x509_ctx->rsa_ctx, modulus, mod_len, pub_exp, pub_len); - - free(modulus); - free(pub_exp); - ret = X509_OK; - -end_pub_key: - return ret; -} - -#ifdef CONFIG_SSL_CERT_VERIFICATION -/** - * Read the signature of the certificate. - */ -int asn1_signature(const uint8_t *cert, int *offset, X509_CTX *x509_ctx) -{ - int ret = X509_NOT_OK; - - if (cert[(*offset)++] != ASN1_BIT_STRING) - goto end_sig; - - x509_ctx->sig_len = get_asn1_length(cert, offset)-1; - (*offset)++; /* ignore bit string padding bits */ - x509_ctx->signature = (uint8_t *)malloc(x509_ctx->sig_len); - memcpy(x509_ctx->signature, &cert[*offset], x509_ctx->sig_len); - *offset += x509_ctx->sig_len; - ret = X509_OK; - -end_sig: - return ret; -} - -/* - * Compare 2 distinguished name components for equality - * @return 0 if a match - */ -static int asn1_compare_dn_comp(const char *dn1, const char *dn2) -{ - int ret; - - if (dn1 == NULL && dn2 == NULL) - ret = 0; - else - ret = (dn1 && dn2) ? strcmp(dn1, dn2) : 1; - - return ret; -} - -/** - * Clean up all of the CA certificates. - */ -void remove_ca_certs(CA_CERT_CTX *ca_cert_ctx) -{ - int i = 0; - - if (ca_cert_ctx == NULL) - return; - - while (i < CONFIG_X509_MAX_CA_CERTS && ca_cert_ctx->cert[i]) - { - x509_free(ca_cert_ctx->cert[i]); - ca_cert_ctx->cert[i++] = NULL; - } - - free(ca_cert_ctx); -} - -/* - * Compare 2 distinguished names for equality - * @return 0 if a match - */ -int asn1_compare_dn(char * const dn1[], char * const dn2[]) -{ - int i; - - for (i = 0; i < X509_NUM_DN_TYPES; i++) - { - if (asn1_compare_dn_comp(dn1[i], dn2[i])) - return 1; - } - - return 0; /* all good */ -} - -int asn1_find_oid(const uint8_t* cert, int* offset, - const uint8_t* oid, int oid_length) -{ - int seqlen; - if ((seqlen = asn1_next_obj(cert, offset, ASN1_SEQUENCE))> 0) - { - int end = *offset + seqlen; - - while (*offset < end) - { - int type = cert[(*offset)++]; - int length = get_asn1_length(cert, offset); - int noffset = *offset + length; - - if (type == ASN1_SEQUENCE) - { - type = cert[(*offset)++]; - length = get_asn1_length(cert, offset); - - if (type == ASN1_OID && length == oid_length && - memcmp(cert + *offset, oid, oid_length) == 0) - { - *offset += oid_length; - return 1; - } - } - - *offset = noffset; - } - } - - return 0; -} - -int asn1_find_subjectaltname(const uint8_t* cert, int offset) -{ - if (asn1_find_oid(cert, &offset, sig_subject_alt_name, - SIG_SUBJECT_ALT_NAME_SIZE)) - { - return offset; - } - - return 0; -} - -#endif /* CONFIG_SSL_CERT_VERIFICATION */ - -/** - * Read the signature type of the certificate. We only support RSA-MD5 and - * RSA-SHA1 signature types. - */ -int asn1_signature_type(const uint8_t *cert, - int *offset, X509_CTX *x509_ctx) -{ - int ret = X509_NOT_OK, len; - - if (cert[(*offset)++] != ASN1_OID) - goto end_check_sig; - - len = get_asn1_length(cert, offset); - - if (len == 5 && memcmp(sig_sha1WithRSAEncrypt, &cert[*offset], - SIG_IIS6_OID_SIZE) == 0) - { - x509_ctx->sig_type = SIG_TYPE_SHA1; - } - else - { - if (memcmp(sig_oid_prefix, &cert[*offset], SIG_OID_PREFIX_SIZE)) - goto end_check_sig; /* unrecognised cert type */ - - x509_ctx->sig_type = cert[*offset + SIG_OID_PREFIX_SIZE]; - } - - *offset += len; - asn1_skip_obj(cert, offset, ASN1_NULL); /* if it's there */ - ret = X509_OK; - -end_check_sig: - return ret; -} - diff --git a/axTLS/src/ssl/cert.h b/axTLS/src/ssl/cert.h deleted file mode 100644 index 30c7b65..0000000 --- a/axTLS/src/ssl/cert.h +++ /dev/null @@ -1,43 +0,0 @@ -unsigned char default_certificate[] = { - 0x30, 0x82, 0x01, 0xd7, 0x30, 0x82, 0x01, 0x40, 0x02, 0x09, 0x00, 0xab, - 0x08, 0x18, 0xa7, 0x03, 0x07, 0x27, 0xfd, 0x30, 0x0d, 0x06, 0x09, 0x2a, - 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x30, 0x34, - 0x31, 0x32, 0x30, 0x30, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x29, 0x61, - 0x78, 0x54, 0x4c, 0x53, 0x20, 0x50, 0x72, 0x6f, 0x6a, 0x65, 0x63, 0x74, - 0x20, 0x44, 0x6f, 0x64, 0x67, 0x79, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, - 0x66, 0x69, 0x63, 0x61, 0x74, 0x65, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f, - 0x72, 0x69, 0x74, 0x79, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x30, 0x31, 0x32, - 0x32, 0x36, 0x32, 0x32, 0x33, 0x33, 0x33, 0x39, 0x5a, 0x17, 0x0d, 0x32, - 0x34, 0x30, 0x39, 0x30, 0x33, 0x32, 0x32, 0x33, 0x33, 0x33, 0x39, 0x5a, - 0x30, 0x2c, 0x31, 0x16, 0x30, 0x14, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, - 0x0d, 0x61, 0x78, 0x54, 0x4c, 0x53, 0x20, 0x50, 0x72, 0x6f, 0x6a, 0x65, - 0x63, 0x74, 0x31, 0x12, 0x30, 0x10, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, - 0x09, 0x31, 0x32, 0x37, 0x2e, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x30, 0x81, - 0x9f, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, - 0x01, 0x01, 0x05, 0x00, 0x03, 0x81, 0x8d, 0x00, 0x30, 0x81, 0x89, 0x02, - 0x81, 0x81, 0x00, 0xcd, 0xfd, 0x89, 0x48, 0xbe, 0x36, 0xb9, 0x95, 0x76, - 0xd4, 0x13, 0x30, 0x0e, 0xbf, 0xb2, 0xed, 0x67, 0x0a, 0xc0, 0x16, 0x3f, - 0x51, 0x09, 0x9d, 0x29, 0x2f, 0xb2, 0x6d, 0x3f, 0x3e, 0x6c, 0x2f, 0x90, - 0x80, 0xa1, 0x71, 0xdf, 0xbe, 0x38, 0xc5, 0xcb, 0xa9, 0x9a, 0x40, 0x14, - 0x90, 0x0a, 0xf9, 0xb7, 0x07, 0x0b, 0xe1, 0xda, 0xe7, 0x09, 0xbf, 0x0d, - 0x57, 0x41, 0x86, 0x60, 0xa1, 0xc1, 0x27, 0x91, 0x5b, 0x0a, 0x98, 0x46, - 0x1b, 0xf6, 0xa2, 0x84, 0xf8, 0x65, 0xc7, 0xce, 0x2d, 0x96, 0x17, 0xaa, - 0x91, 0xf8, 0x61, 0x04, 0x50, 0x70, 0xeb, 0xb4, 0x43, 0xb7, 0xdc, 0x9a, - 0xcc, 0x31, 0x01, 0x14, 0xd4, 0xcd, 0xcc, 0xc2, 0x37, 0x6d, 0x69, 0x82, - 0xd6, 0xc6, 0xc4, 0xbe, 0xf2, 0x34, 0xa5, 0xc9, 0xa6, 0x19, 0x53, 0x32, - 0x7a, 0x86, 0x0e, 0x91, 0x82, 0x0f, 0xa1, 0x42, 0x54, 0xaa, 0x01, 0x02, - 0x03, 0x01, 0x00, 0x01, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, - 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x03, 0x81, 0x81, 0x00, 0x40, - 0xb4, 0x94, 0x9a, 0xa8, 0x89, 0x72, 0x1d, 0x07, 0xe5, 0xb3, 0x6b, 0x88, - 0x21, 0xc2, 0x38, 0x36, 0x9e, 0x7a, 0x8c, 0x49, 0x48, 0x68, 0x0c, 0x06, - 0xe8, 0xdb, 0x1f, 0x4e, 0x05, 0xe6, 0x31, 0xe3, 0xfd, 0xe6, 0x0d, 0x6b, - 0xd8, 0x13, 0x17, 0xe0, 0x2d, 0x0d, 0xb8, 0x7e, 0xcb, 0x20, 0x6c, 0xa8, - 0x73, 0xa7, 0xfd, 0xe3, 0xa7, 0xfa, 0xf3, 0x02, 0x60, 0x78, 0x1f, 0x13, - 0x40, 0x45, 0xee, 0x75, 0xf5, 0x10, 0xfd, 0x8f, 0x68, 0x74, 0xd4, 0xac, - 0xae, 0x04, 0x09, 0x55, 0x2c, 0xdb, 0xd8, 0x07, 0x07, 0x65, 0x69, 0x27, - 0x6e, 0xbf, 0x5e, 0x61, 0x40, 0x56, 0x8b, 0xd7, 0x33, 0x3b, 0xff, 0x6e, - 0x53, 0x7e, 0x9d, 0x3f, 0xc0, 0x40, 0x3a, 0xab, 0xa0, 0x50, 0x4e, 0x80, - 0x47, 0x46, 0x0d, 0x1e, 0xdb, 0x4c, 0xf1, 0x1b, 0x5d, 0x3c, 0x2a, 0x54, - 0xa7, 0x4d, 0xfa, 0x7b, 0x72, 0x66, 0xc5 -}; -unsigned int default_certificate_len = 475; diff --git a/axTLS/src/ssl/crypto_misc.h b/axTLS/src/ssl/crypto_misc.h deleted file mode 100644 index 9c9e2aa..0000000 --- a/axTLS/src/ssl/crypto_misc.h +++ /dev/null @@ -1,173 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - -/** - * @file crypto_misc.h - */ - -#ifndef HEADER_CRYPTO_MISC_H -#define HEADER_CRYPTO_MISC_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include "crypto.h" -#include "bigint.h" - -/************************************************************************** - * X509 declarations - **************************************************************************/ -#define X509_OK 0 -#define X509_NOT_OK -1 -#define X509_VFY_ERROR_NO_TRUSTED_CERT -2 -#define X509_VFY_ERROR_BAD_SIGNATURE -3 -#define X509_VFY_ERROR_NOT_YET_VALID -4 -#define X509_VFY_ERROR_EXPIRED -5 -#define X509_VFY_ERROR_SELF_SIGNED -6 -#define X509_VFY_ERROR_INVALID_CHAIN -7 -#define X509_VFY_ERROR_UNSUPPORTED_DIGEST -8 -#define X509_INVALID_PRIV_KEY -9 - -/* - * The Distinguished Name - */ -#define X509_NUM_DN_TYPES 3 -#define X509_COMMON_NAME 0 -#define X509_ORGANIZATION 1 -#define X509_ORGANIZATIONAL_UNIT 2 - -struct _x509_ctx -{ - char *ca_cert_dn[X509_NUM_DN_TYPES]; - char *cert_dn[X509_NUM_DN_TYPES]; - char **subject_alt_dnsnames; - time_t not_before; - time_t not_after; - uint8_t *signature; - uint16_t sig_len; - uint8_t sig_type; - RSA_CTX *rsa_ctx; - bigint *digest; - uint8_t sha1_fingerprint[SHA1_SIZE]; - struct _x509_ctx *next; -}; - -typedef struct _x509_ctx X509_CTX; - -#ifdef CONFIG_SSL_CERT_VERIFICATION -typedef struct -{ - X509_CTX *cert[CONFIG_X509_MAX_CA_CERTS]; -} CA_CERT_CTX; -#endif - -int x509_new(const uint8_t *cert, int *len, X509_CTX **ctx); -void x509_free(X509_CTX *x509_ctx); -#ifdef CONFIG_SSL_CERT_VERIFICATION -int x509_verify(const CA_CERT_CTX *ca_cert_ctx, const X509_CTX *cert); -#endif -#ifdef CONFIG_SSL_FULL_MODE -void x509_print(const X509_CTX *cert, CA_CERT_CTX *ca_cert_ctx); -const char * x509_display_error(int error); -#endif - -/************************************************************************** - * ASN1 declarations - **************************************************************************/ -#define ASN1_INTEGER 0x02 -#define ASN1_BIT_STRING 0x03 -#define ASN1_OCTET_STRING 0x04 -#define ASN1_NULL 0x05 -#define ASN1_PRINTABLE_STR2 0x0C -#define ASN1_OID 0x06 -#define ASN1_PRINTABLE_STR2 0x0C -#define ASN1_PRINTABLE_STR 0x13 -#define ASN1_TELETEX_STR 0x14 -#define ASN1_IA5_STR 0x16 -#define ASN1_UTC_TIME 0x17 -#define ASN1_UNICODE_STR 0x1e -#define ASN1_SEQUENCE 0x30 -#define ASN1_CONTEXT_DNSNAME 0x82 -#define ASN1_SET 0x31 -#define ASN1_V3_DATA 0xa3 -#define ASN1_IMPLICIT_TAG 0x80 -#define ASN1_CONTEXT_DNSNAME 0x82 -#define ASN1_EXPLICIT_TAG 0xa0 -#define ASN1_V3_DATA 0xa3 - -#define SIG_TYPE_MD2 0x02 -#define SIG_TYPE_MD5 0x04 -#define SIG_TYPE_SHA1 0x05 - -int get_asn1_length(const uint8_t *buf, int *offset); -int asn1_get_private_key(const uint8_t *buf, int len, RSA_CTX **rsa_ctx); -int asn1_next_obj(const uint8_t *buf, int *offset, int obj_type); -int asn1_skip_obj(const uint8_t *buf, int *offset, int obj_type); -int asn1_get_int(const uint8_t *buf, int *offset, uint8_t **object); -int asn1_version(const uint8_t *cert, int *offset, X509_CTX *x509_ctx); -int asn1_validity(const uint8_t *cert, int *offset, X509_CTX *x509_ctx); -int asn1_name(const uint8_t *cert, int *offset, char *dn[]); -int asn1_public_key(const uint8_t *cert, int *offset, X509_CTX *x509_ctx); -#ifdef CONFIG_SSL_CERT_VERIFICATION -int asn1_signature(const uint8_t *cert, int *offset, X509_CTX *x509_ctx); -int asn1_find_subjectaltname(const uint8_t* cert, int offset); -int asn1_compare_dn(char * const dn1[], char * const dn2[]); -#endif /* CONFIG_SSL_CERT_VERIFICATION */ -int asn1_signature_type(const uint8_t *cert, - int *offset, X509_CTX *x509_ctx); - -/************************************************************************** - * MISC declarations - **************************************************************************/ -#define SALT_SIZE 8 - -extern const char * const unsupported_str; - -typedef void (*crypt_func)(void *, const uint8_t *, uint8_t *, int); -typedef void (*hmac_func)(const uint8_t *msg, int length, const uint8_t *key, - int key_len, uint8_t *digest); - -int get_file(const char *filename, uint8_t **buf); - -#if defined(CONFIG_SSL_FULL_MODE) || defined(WIN32) || defined(CONFIG_DEBUG) -EXP_FUNC void STDCALL print_blob(const char *format, const uint8_t *data, int size, ...); -#else - #define print_blob(...) -#endif - -EXP_FUNC int STDCALL base64_decode(const char *in, int len, - uint8_t *out, int *outlen); - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/axTLS/src/ssl/gen_cert.c b/axTLS/src/ssl/gen_cert.c deleted file mode 100644 index c2fe381..0000000 --- a/axTLS/src/ssl/gen_cert.c +++ /dev/null @@ -1,364 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" - -#ifdef CONFIG_SSL_GENERATE_X509_CERT -#include -#include -#include "os_port.h" -#include "ssl.h" - -/** - * Generate a basic X.509 certificate - */ - -static uint8_t set_gen_length(int len, uint8_t *buf, int *offset) -{ - if (len < 0x80) /* short form */ - { - buf[(*offset)++] = len; - return 1; - } - else /* long form */ - { - int i, length_bytes = 0; - - if (len & 0x00FF0000) - length_bytes = 3; - else if (len & 0x0000FF00) - length_bytes = 2; - else if (len & 0x000000FF) - length_bytes = 1; - - buf[(*offset)++] = 0x80 + length_bytes; - - for (i = length_bytes-1; i >= 0; i--) - { - buf[*offset+i] = len & 0xFF; - len >>= 8; - } - - *offset += length_bytes; - return length_bytes+1; - } -} - -static int pre_adjust_with_size(uint8_t type, - int *seq_offset, uint8_t *buf, int *offset) -{ - buf[(*offset)++] = type; - *seq_offset = *offset; - *offset += 4; /* fill in later */ - return *offset; -} - -static void adjust_with_size(int seq_size, int seq_start, - uint8_t *buf, int *offset) -{ - uint8_t seq_byte_size; - int orig_seq_size = seq_size; - int orig_seq_start = seq_start; - - seq_size = *offset-seq_size; - seq_byte_size = set_gen_length(seq_size, buf, &seq_start); - - if (seq_byte_size != 4) - { - memmove(&buf[orig_seq_start+seq_byte_size], - &buf[orig_seq_size], seq_size); - *offset -= 4-seq_byte_size; - } -} - -static void gen_serial_number(uint8_t *buf, int *offset) -{ - static const uint8_t ser_oid[] = { ASN1_INTEGER, 1, 0x7F }; - memcpy(&buf[*offset], ser_oid , sizeof(ser_oid)); - *offset += sizeof(ser_oid); -} - -static void gen_signature_alg(uint8_t *buf, int *offset) -{ - /* OBJECT IDENTIFIER sha1withRSAEncryption (1 2 840 113549 1 1 5) */ - static const uint8_t sig_oid[] = - { - ASN1_SEQUENCE, 0x0d, ASN1_OID, 0x09, - 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, - ASN1_NULL, 0x00 - }; - - memcpy(&buf[*offset], sig_oid, sizeof(sig_oid)); - *offset += sizeof(sig_oid); -} - -static int gen_dn(const char *name, uint8_t dn_type, - uint8_t *buf, int *offset) -{ - int ret = X509_OK; - int name_size = strlen(name); - - if (name_size > 0x70) /* just too big */ - { - ret = X509_NOT_OK; - goto error; - } - - buf[(*offset)++] = ASN1_SET; - set_gen_length(9+name_size, buf, offset); - buf[(*offset)++] = ASN1_SEQUENCE; - set_gen_length(7+name_size, buf, offset); - buf[(*offset)++] = ASN1_OID; - buf[(*offset)++] = 3; - buf[(*offset)++] = 0x55; - buf[(*offset)++] = 0x04; - buf[(*offset)++] = dn_type; - buf[(*offset)++] = ASN1_PRINTABLE_STR; - buf[(*offset)++] = name_size; - strcpy(&buf[*offset], name); - *offset += name_size; - -error: - return ret; -} - -static int gen_issuer(const char * dn[], uint8_t *buf, int *offset) -{ - int ret = X509_OK; - int seq_offset; - int seq_size = pre_adjust_with_size( - ASN1_SEQUENCE, &seq_offset, buf, offset); - char fqdn[128]; - - /* we need the common name, so if not configured, work out the fully - * qualified domain name */ - if (dn[X509_COMMON_NAME] == NULL || strlen(dn[X509_COMMON_NAME]) == 0) - { - int fqdn_len; - gethostname(fqdn, sizeof(fqdn)); - fqdn_len = strlen(fqdn); - fqdn[fqdn_len++] = '.'; - getdomainname(&fqdn[fqdn_len], sizeof(fqdn)-fqdn_len); - fqdn_len = strlen(fqdn); - - if (fqdn[fqdn_len-1] == '.') /* ensure '.' is not last char */ - fqdn[fqdn_len-1] = 0; - - dn[X509_COMMON_NAME] = fqdn; - } - - if ((ret = gen_dn(dn[X509_COMMON_NAME], 3, buf, offset))) - goto error; - - if (dn[X509_ORGANIZATION] != NULL && strlen(dn[X509_ORGANIZATION]) > 0) - { - if ((ret = gen_dn(dn[X509_ORGANIZATION], 10, buf, offset))) - goto error; - } - - if (dn[X509_ORGANIZATIONAL_UNIT] != NULL && - strlen(dn[X509_ORGANIZATIONAL_UNIT]) > 0) - { - if ((ret = gen_dn(dn[X509_ORGANIZATIONAL_UNIT], 11, buf, offset))) - goto error; - } - - adjust_with_size(seq_size, seq_offset, buf, offset); - -error: - return ret; -} - -static void gen_utc_time(uint8_t *buf, int *offset) -{ - static const uint8_t time_seq[] = - { - ASN1_SEQUENCE, 30, - ASN1_UTC_TIME, 13, - '0', '7', '0', '1', '0', '1', '0', '0', '0', '0', '0', '0', 'Z', - ASN1_UTC_TIME, 13, /* make it good for 30 or so years */ - '3', '8', '0', '1', '0', '1', '0', '0', '0', '0', '0', '0', 'Z' - }; - - /* fixed time */ - memcpy(&buf[*offset], time_seq, sizeof(time_seq)); - *offset += sizeof(time_seq); -} - -static void gen_pub_key2(const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset) -{ - static const uint8_t pub_key_seq[] = - { - ASN1_INTEGER, 0x03, 0x01, 0x00, 0x01 /* INTEGER 65537 */ - }; - - int seq_offset; - int pub_key_size = rsa_ctx->num_octets; - uint8_t *block = (uint8_t *)alloca(pub_key_size); - int seq_size = pre_adjust_with_size( - ASN1_SEQUENCE, &seq_offset, buf, offset); - buf[(*offset)++] = ASN1_INTEGER; - bi_export(rsa_ctx->bi_ctx, rsa_ctx->m, block, pub_key_size); - - if (*block & 0x80) /* make integer positive */ - { - set_gen_length(pub_key_size+1, buf, offset); - buf[(*offset)++] = 0; - } - else - set_gen_length(pub_key_size, buf, offset); - - memcpy(&buf[*offset], block, pub_key_size); - *offset += pub_key_size; - memcpy(&buf[*offset], pub_key_seq, sizeof(pub_key_seq)); - *offset += sizeof(pub_key_seq); - adjust_with_size(seq_size, seq_offset, buf, offset); -} - -static void gen_pub_key1(const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset) -{ - int seq_offset; - int seq_size = pre_adjust_with_size( - ASN1_BIT_STRING, &seq_offset, buf, offset); - buf[(*offset)++] = 0; /* bit string is multiple of 8 */ - gen_pub_key2(rsa_ctx, buf, offset); - adjust_with_size(seq_size, seq_offset, buf, offset); -} - -static void gen_pub_key(const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset) -{ - /* OBJECT IDENTIFIER rsaEncryption (1 2 840 113549 1 1 1) */ - static const uint8_t rsa_enc_oid[] = - { - ASN1_SEQUENCE, 0x0d, ASN1_OID, 0x09, - 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, - ASN1_NULL, 0x00 - }; - - int seq_offset; - int seq_size = pre_adjust_with_size( - ASN1_SEQUENCE, &seq_offset, buf, offset); - - memcpy(&buf[*offset], rsa_enc_oid, sizeof(rsa_enc_oid)); - *offset += sizeof(rsa_enc_oid); - gen_pub_key1(rsa_ctx, buf, offset); - adjust_with_size(seq_size, seq_offset, buf, offset); -} - -static void gen_signature(const RSA_CTX *rsa_ctx, const uint8_t *sha_dgst, - uint8_t *buf, int *offset) -{ - static const uint8_t asn1_sig[] = - { - ASN1_SEQUENCE, 0x21, ASN1_SEQUENCE, 0x09, ASN1_OID, 0x05, - 0x2b, 0x0e, 0x03, 0x02, 0x1a, /* sha1 (1 3 14 3 2 26) */ - ASN1_NULL, 0x00, ASN1_OCTET_STRING, 0x14 - }; - - uint8_t *enc_block = (uint8_t *)alloca(rsa_ctx->num_octets); - uint8_t *block = (uint8_t *)alloca(sizeof(asn1_sig) + SHA1_SIZE); - int sig_size; - - /* add the digest as an embedded asn.1 sequence */ - memcpy(block, asn1_sig, sizeof(asn1_sig)); - memcpy(&block[sizeof(asn1_sig)], sha_dgst, SHA1_SIZE); - - sig_size = RSA_encrypt(rsa_ctx, block, - sizeof(asn1_sig) + SHA1_SIZE, enc_block, 1); - - buf[(*offset)++] = ASN1_BIT_STRING; - set_gen_length(sig_size+1, buf, offset); - buf[(*offset)++] = 0; /* bit string is multiple of 8 */ - memcpy(&buf[*offset], enc_block, sig_size); - *offset += sig_size; -} - -static int gen_tbs_cert(const char * dn[], - const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset, - uint8_t *sha_dgst) -{ - int ret = X509_OK; - SHA1_CTX sha_ctx; - int seq_offset; - int begin_tbs = *offset; - int seq_size = pre_adjust_with_size( - ASN1_SEQUENCE, &seq_offset, buf, offset); - - gen_serial_number(buf, offset); - gen_signature_alg(buf, offset); - - /* CA certicate issuer */ - if ((ret = gen_issuer(dn, buf, offset))) - goto error; - - gen_utc_time(buf, offset); - - /* certificate issuer */ - if ((ret = gen_issuer(dn, buf, offset))) - goto error; - - gen_pub_key(rsa_ctx, buf, offset); - adjust_with_size(seq_size, seq_offset, buf, offset); - - SHA1_Init(&sha_ctx); - SHA1_Update(&sha_ctx, &buf[begin_tbs], *offset-begin_tbs); - SHA1_Final(sha_dgst, &sha_ctx); - -error: - return ret; -} - -/** - * Create a new certificate. - */ -EXP_FUNC int STDCALL ssl_x509_create(SSL_CTX *ssl_ctx, uint32_t options, const char * dn[], uint8_t **cert_data) -{ - int ret = X509_OK, offset = 0, seq_offset; - /* allocate enough space to load a new certificate */ - uint8_t *buf = (uint8_t *)alloca(ssl_ctx->rsa_ctx->num_octets*2 + 512); - uint8_t sha_dgst[SHA1_SIZE]; - int seq_size = pre_adjust_with_size(ASN1_SEQUENCE, - &seq_offset, buf, &offset); - - if ((ret = gen_tbs_cert(dn, ssl_ctx->rsa_ctx, buf, &offset, sha_dgst)) < 0) - goto error; - - gen_signature_alg(buf, &offset); - gen_signature(ssl_ctx->rsa_ctx, sha_dgst, buf, &offset); - adjust_with_size(seq_size, seq_offset, buf, &offset); - *cert_data = (uint8_t *)malloc(offset); /* create the exact memory for it */ - memcpy(*cert_data, buf, offset); - -error: - return ret < 0 ? ret : offset; -} - -#endif - diff --git a/axTLS/src/ssl/loader.c b/axTLS/src/ssl/loader.c deleted file mode 100644 index 90231f3..0000000 --- a/axTLS/src/ssl/loader.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * Load certificates/keys into memory. These can be in many different formats. - * PEM support and other formats can be processed here. - * - * The PEM private keys may be optionally encrypted with AES128 or AES256. - * The encrypted PEM keys were generated with something like: - * - * openssl genrsa -aes128 -passout pass:abcd -out axTLS.key_aes128.pem 512 - */ - -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -static int do_obj(SSL_CTX *ssl_ctx, int obj_type, - SSLObjLoader *ssl_obj, const char *password); -#ifdef CONFIG_SSL_HAS_PEM -static int ssl_obj_PEM_load(SSL_CTX *ssl_ctx, int obj_type, - SSLObjLoader *ssl_obj, const char *password); -#endif - -/* - * Load a file into memory that is in binary DER (or ascii PEM) format. - */ -EXP_FUNC int STDCALL ssl_obj_load(SSL_CTX *ssl_ctx, int obj_type, - const char *filename, const char *password) -{ -#ifndef CONFIG_SSL_SKELETON_MODE - static const char * const begin = "-----BEGIN"; - int ret = SSL_OK; - SSLObjLoader *ssl_obj = NULL; - - if (filename == NULL) - { - ret = SSL_ERROR_INVALID_KEY; - goto error; - } - - ssl_obj = (SSLObjLoader *)calloc(1, sizeof(SSLObjLoader)); - ssl_obj->len = get_file(filename, &ssl_obj->buf); - if (ssl_obj->len <= 0) - { - ret = SSL_ERROR_INVALID_KEY; - goto error; - } - - /* is the file a PEM file? */ - if (strstr((char *)ssl_obj->buf, begin) != NULL) - { -#ifdef CONFIG_SSL_HAS_PEM - ret = ssl_obj_PEM_load(ssl_ctx, obj_type, ssl_obj, password); -#else - printf(unsupported_str); - ret = SSL_ERROR_NOT_SUPPORTED; -#endif - } - else - ret = do_obj(ssl_ctx, obj_type, ssl_obj, password); - -error: - ssl_obj_free(ssl_obj); - return ret; -#else - printf(unsupported_str); - return SSL_ERROR_NOT_SUPPORTED; -#endif /* CONFIG_SSL_SKELETON_MODE */ -} - -/* - * Transfer binary data into the object loader. - */ -EXP_FUNC int STDCALL ssl_obj_memory_load(SSL_CTX *ssl_ctx, int mem_type, - const uint8_t *data, int len, const char *password) -{ - int ret; - SSLObjLoader *ssl_obj; - - ssl_obj = (SSLObjLoader *)calloc(1, sizeof(SSLObjLoader)); - ssl_obj->buf = (uint8_t *)malloc(len); - memcpy(ssl_obj->buf, data, len); - ssl_obj->len = len; - ret = do_obj(ssl_ctx, mem_type, ssl_obj, password); - ssl_obj_free(ssl_obj); - return ret; -} - -/* - * Actually work out what we are doing - */ -static int do_obj(SSL_CTX *ssl_ctx, int obj_type, - SSLObjLoader *ssl_obj, const char *password) -{ - int ret = SSL_OK; - - switch (obj_type) - { - case SSL_OBJ_RSA_KEY: - ret = add_private_key(ssl_ctx, ssl_obj); - break; - - case SSL_OBJ_X509_CERT: - ret = add_cert(ssl_ctx, ssl_obj->buf, ssl_obj->len); - break; - -#ifdef CONFIG_SSL_CERT_VERIFICATION - case SSL_OBJ_X509_CACERT: - add_cert_auth(ssl_ctx, ssl_obj->buf, ssl_obj->len); - break; -#endif - -#ifdef CONFIG_SSL_USE_PKCS12 - case SSL_OBJ_PKCS8: - ret = pkcs8_decode(ssl_ctx, ssl_obj, password); - break; - - case SSL_OBJ_PKCS12: - ret = pkcs12_decode(ssl_ctx, ssl_obj, password); - break; -#endif - default: - printf(unsupported_str); - ret = SSL_ERROR_NOT_SUPPORTED; - break; - } - - return ret; -} - -/* - * Clean up our mess. - */ -void ssl_obj_free(SSLObjLoader *ssl_obj) -{ - if (ssl_obj) - { - free(ssl_obj->buf); - free(ssl_obj); - } -} - -/* - * Support for PEM encoded keys/certificates. - */ -#ifdef CONFIG_SSL_HAS_PEM - -#define NUM_PEM_TYPES 4 -#define IV_SIZE 16 -#define IS_RSA_PRIVATE_KEY 0 -#define IS_ENCRYPTED_PRIVATE_KEY 1 -#define IS_PRIVATE_KEY 2 -#define IS_CERTIFICATE 3 - -static const char * const begins[NUM_PEM_TYPES] = -{ - "-----BEGIN RSA PRIVATE KEY-----", - "-----BEGIN ENCRYPTED PRIVATE KEY-----", - "-----BEGIN PRIVATE KEY-----", - "-----BEGIN CERTIFICATE-----", -}; - -static const char * const ends[NUM_PEM_TYPES] = -{ - "-----END RSA PRIVATE KEY-----", - "-----END ENCRYPTED PRIVATE KEY-----", - "-----END PRIVATE KEY-----", - "-----END CERTIFICATE-----", -}; - -static const char * const aes_str[2] = -{ - "DEK-Info: AES-128-CBC,", - "DEK-Info: AES-256-CBC," -}; - -/** - * Take a base64 blob of data and decrypt it (using AES) into its - * proper ASN.1 form. - */ -static int pem_decrypt(const char *where, const char *end, - const char *password, SSLObjLoader *ssl_obj) -{ - int ret = -1; - int is_aes_256 = 0; - char *start = NULL; - uint8_t iv[IV_SIZE]; - int i, pem_size; - MD5_CTX md5_ctx; - AES_CTX aes_ctx; - uint8_t key[32]; /* AES256 size */ - - if (password == NULL || strlen(password) == 0) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: Need a password for this PEM file\n"); TTY_FLUSH(); -#endif - goto error; - } - - if ((start = strstr((const char *)where, aes_str[0]))) /* AES128? */ - { - start += strlen(aes_str[0]); - } - else if ((start = strstr((const char *)where, aes_str[1]))) /* AES256? */ - { - is_aes_256 = 1; - start += strlen(aes_str[1]); - } - else - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: Unsupported password cipher\n"); TTY_FLUSH(); -#endif - goto error; - } - - /* convert from hex to binary - assumes uppercase hex */ - for (i = 0; i < IV_SIZE; i++) - { - char c = *start++ - '0'; - iv[i] = (c > 9 ? c + '0' - 'A' + 10 : c) << 4; - c = *start++ - '0'; - iv[i] += (c > 9 ? c + '0' - 'A' + 10 : c); - } - - while (*start == '\r' || *start == '\n') - start++; - - /* turn base64 into binary */ - pem_size = (int)(end-start); - if (base64_decode(start, pem_size, ssl_obj->buf, &ssl_obj->len) != 0) - goto error; - - /* work out the key */ - MD5_Init(&md5_ctx); - MD5_Update(&md5_ctx, (const uint8_t *)password, strlen(password)); - MD5_Update(&md5_ctx, iv, SALT_SIZE); - MD5_Final(key, &md5_ctx); - - if (is_aes_256) - { - MD5_Init(&md5_ctx); - MD5_Update(&md5_ctx, key, MD5_SIZE); - MD5_Update(&md5_ctx, (const uint8_t *)password, strlen(password)); - MD5_Update(&md5_ctx, iv, SALT_SIZE); - MD5_Final(&key[MD5_SIZE], &md5_ctx); - } - - /* decrypt using the key/iv */ - AES_set_key(&aes_ctx, key, iv, is_aes_256 ? AES_MODE_256 : AES_MODE_128); - AES_convert_key(&aes_ctx); - AES_cbc_decrypt(&aes_ctx, ssl_obj->buf, ssl_obj->buf, ssl_obj->len); - ret = 0; - -error: - return ret; -} - -/** - * Take a base64 blob of data and turn it into its proper ASN.1 form. - */ -static int new_pem_obj(SSL_CTX *ssl_ctx, int is_cacert, char *where, - int remain, const char *password) -{ - int ret = SSL_ERROR_BAD_CERTIFICATE; - SSLObjLoader *ssl_obj = NULL; - - while (remain > 0) - { - int i, pem_size, obj_type; - char *start = NULL, *end = NULL; - - for (i = 0; i < NUM_PEM_TYPES; i++) - { - if ((start = strstr(where, begins[i])) && - (end = strstr(where, ends[i]))) - { - remain -= (int)(end-where); - start += strlen(begins[i]); - pem_size = (int)(end-start); - - ssl_obj = (SSLObjLoader *)calloc(1, sizeof(SSLObjLoader)); - - /* 4/3 bigger than what we need but so what */ - ssl_obj->buf = (uint8_t *)calloc(1, pem_size); - - if (i == IS_RSA_PRIVATE_KEY && - strstr(start, "Proc-Type:") && - strstr(start, "4,ENCRYPTED")) - { - /* check for encrypted PEM file */ - if (pem_decrypt(start, end, password, ssl_obj) < 0) - { - ret = SSL_ERROR_BAD_CERTIFICATE; - goto error; - } - } - else if (base64_decode(start, pem_size, - ssl_obj->buf, &ssl_obj->len) != 0) - { - ret = SSL_ERROR_BAD_CERTIFICATE; - goto error; - } - - switch (i) - { - case IS_RSA_PRIVATE_KEY: - obj_type = SSL_OBJ_RSA_KEY; - break; - - case IS_ENCRYPTED_PRIVATE_KEY: - case IS_PRIVATE_KEY: - obj_type = SSL_OBJ_PKCS8; - break; - - case IS_CERTIFICATE: - obj_type = is_cacert ? - SSL_OBJ_X509_CACERT : SSL_OBJ_X509_CERT; - break; - - default: - ret = SSL_ERROR_BAD_CERTIFICATE; - goto error; - } - - /* In a format we can now understand - so process it */ - if ((ret = do_obj(ssl_ctx, obj_type, ssl_obj, password))) - goto error; - - end += strlen(ends[i]); - remain -= strlen(ends[i]); - while (remain > 0 && (*end == '\r' || *end == '\n')) - { - end++; - remain--; - } - - where = end; - break; - } - } - - ssl_obj_free(ssl_obj); - ssl_obj = NULL; - if (start == NULL) - break; - } -error: - ssl_obj_free(ssl_obj); - return ret; -} - -/* - * Load a file into memory that is in ASCII PEM format. - */ -static int ssl_obj_PEM_load(SSL_CTX *ssl_ctx, int obj_type, - SSLObjLoader *ssl_obj, const char *password) -{ - char *start; - - /* add a null terminator */ - ssl_obj->len++; - ssl_obj->buf = (uint8_t *)realloc(ssl_obj->buf, ssl_obj->len); - ssl_obj->buf[ssl_obj->len-1] = 0; - start = (char *)ssl_obj->buf; - return new_pem_obj(ssl_ctx, obj_type == SSL_OBJ_X509_CACERT, - start, ssl_obj->len, password); -} -#endif /* CONFIG_SSL_HAS_PEM */ - -/** - * Load the key/certificates in memory depending on compile-time and user - * options. - */ -int load_key_certs(SSL_CTX *ssl_ctx) -{ - int ret = SSL_OK; - uint32_t options = ssl_ctx->options; -#ifdef CONFIG_SSL_GENERATE_X509_CERT - uint8_t *cert_data = NULL; - int cert_size; - static const char *dn[] = - { - CONFIG_SSL_X509_COMMON_NAME, - CONFIG_SSL_X509_ORGANIZATION_NAME, - CONFIG_SSL_X509_ORGANIZATION_UNIT_NAME - }; -#endif - - /* do the private key first */ - if (strlen(CONFIG_SSL_PRIVATE_KEY_LOCATION) > 0) - { - if ((ret = ssl_obj_load(ssl_ctx, SSL_OBJ_RSA_KEY, - CONFIG_SSL_PRIVATE_KEY_LOCATION, - CONFIG_SSL_PRIVATE_KEY_PASSWORD)) < 0) - goto error; - } - else if (!(options & SSL_NO_DEFAULT_KEY)) - { -#if defined(CONFIG_SSL_USE_DEFAULT_KEY) || defined(CONFIG_SSL_SKELETON_MODE) - static const /* saves a few more bytes */ -#include "private_key.h" - - ssl_obj_memory_load(ssl_ctx, SSL_OBJ_RSA_KEY, default_private_key, - default_private_key_len, NULL); -#endif - } - - /* now load the certificate */ -#ifdef CONFIG_SSL_GENERATE_X509_CERT - if ((cert_size = ssl_x509_create(ssl_ctx, 0, dn, &cert_data)) < 0) - { - ret = cert_size; - goto error; - } - - ssl_obj_memory_load(ssl_ctx, SSL_OBJ_X509_CERT, cert_data, cert_size, NULL); - free(cert_data); -#else - if (strlen(CONFIG_SSL_X509_CERT_LOCATION)) - { - if ((ret = ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CERT, - CONFIG_SSL_X509_CERT_LOCATION, NULL)) < 0) - goto error; - } - else if (!(options & SSL_NO_DEFAULT_KEY)) - { -#if defined(CONFIG_SSL_USE_DEFAULT_KEY) || defined(CONFIG_SSL_SKELETON_MODE) - static const /* saves a few bytes and RAM */ -#include "cert.h" - ssl_obj_memory_load(ssl_ctx, SSL_OBJ_X509_CERT, - default_certificate, default_certificate_len, NULL); -#endif - } -#endif - -error: -#ifdef CONFIG_SSL_FULL_MODE - if (ret) - { - printf("Error: Certificate or key not loaded\n"); TTY_FLUSH(); - } -#endif - - return ret; - -} diff --git a/axTLS/src/ssl/openssl.c b/axTLS/src/ssl/openssl.c deleted file mode 100644 index 6b5c4d8..0000000 --- a/axTLS/src/ssl/openssl.c +++ /dev/null @@ -1,323 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * Enable a subset of openssl compatible functions. We don't aim to be 100% - * compatible - just to be able to do basic ports etc. - * - * Only really tested on mini_httpd, so I'm not too sure how extensive this - * port is. - */ - -#include "config.h" - -#ifdef CONFIG_OPENSSL_COMPATIBLE -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -#define OPENSSL_CTX_ATTR ((OPENSSL_CTX *)ssl_ctx->bonus_attr) - -static char *key_password = NULL; - -void *SSLv23_server_method(void) { return NULL; } -void *SSLv3_server_method(void) { return NULL; } -void *TLSv1_server_method(void) { return NULL; } -void *SSLv23_client_method(void) { return NULL; } -void *SSLv3_client_method(void) { return NULL; } -void *TLSv1_client_method(void) { return NULL; } - -typedef void * (*ssl_func_type_t)(void); -typedef void * (*bio_func_type_t)(void); - -typedef struct -{ - ssl_func_type_t ssl_func_type; -} OPENSSL_CTX; - -SSL_CTX * SSL_CTX_new(ssl_func_type_t meth) -{ - SSL_CTX *ssl_ctx = ssl_ctx_new(0, 5); - ssl_ctx->bonus_attr = malloc(sizeof(OPENSSL_CTX)); - OPENSSL_CTX_ATTR->ssl_func_type = meth; - return ssl_ctx; -} - -void SSL_CTX_free(SSL_CTX * ssl_ctx) -{ - free(ssl_ctx->bonus_attr); - ssl_ctx_free(ssl_ctx); -} - -SSL * SSL_new(SSL_CTX *ssl_ctx) -{ - SSL *ssl; - ssl_func_type_t ssl_func_type; - - ssl = ssl_new(ssl_ctx, -1); /* fd is set later */ - ssl_func_type = OPENSSL_CTX_ATTR->ssl_func_type; - -#ifdef CONFIG_SSL_ENABLE_CLIENT - if (ssl_func_type == SSLv23_client_method || - ssl_func_type == SSLv3_client_method || - ssl_func_type == TLSv1_client_method) - { - SET_SSL_FLAG(SSL_IS_CLIENT); - } - else -#endif - { - ssl->next_state = HS_CLIENT_HELLO; - } - - return ssl; -} - -int SSL_set_fd(SSL *s, int fd) -{ - s->client_fd = fd; - return 1; /* always succeeds */ -} - -int SSL_accept(SSL *ssl) -{ - while (ssl_read(ssl, NULL) == SSL_OK) - { - if (ssl->next_state == HS_CLIENT_HELLO) - return 1; /* we're done */ - } - - return -1; -} - -#ifdef CONFIG_SSL_ENABLE_CLIENT -int SSL_connect(SSL *ssl) -{ - return do_client_connect(ssl) == SSL_OK ? 1 : -1; -} -#endif - -void SSL_free(SSL *ssl) -{ - ssl_free(ssl); -} - -int SSL_read(SSL *ssl, void *buf, int num) -{ - uint8_t *read_buf; - int ret; - - while ((ret = ssl_read(ssl, &read_buf)) == SSL_OK); - - if (ret > SSL_OK) - { - memcpy(buf, read_buf, ret > num ? num : ret); - } - - return ret; -} - -int SSL_write(SSL *ssl, const void *buf, int num) -{ - return ssl_write(ssl, buf, num); -} - -int SSL_CTX_use_certificate_file(SSL_CTX *ssl_ctx, const char *file, int type) -{ - return (ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CERT, file, NULL) == SSL_OK); -} - -int SSL_CTX_use_PrivateKey_file(SSL_CTX *ssl_ctx, const char *file, int type) -{ - return (ssl_obj_load(ssl_ctx, SSL_OBJ_RSA_KEY, file, key_password) == SSL_OK); -} - -int SSL_CTX_use_certificate_ASN1(SSL_CTX *ssl_ctx, int len, const uint8_t *d) -{ - return (ssl_obj_memory_load(ssl_ctx, - SSL_OBJ_X509_CERT, d, len, NULL) == SSL_OK); -} - -int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx, - unsigned int sid_ctx_len) -{ - return 1; -} - -int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx) -{ - return 1; -} - -int SSL_CTX_use_certificate_chain_file(SSL_CTX *ssl_ctx, const char *file) -{ - return (ssl_obj_load(ssl_ctx, - SSL_OBJ_X509_CERT, file, NULL) == SSL_OK); -} - -int SSL_shutdown(SSL *ssl) -{ - return 1; -} - -/*** get/set session ***/ -SSL_SESSION *SSL_get1_session(SSL *ssl) -{ - return (SSL_SESSION *)ssl_get_session_id(ssl); /* note: wrong cast */ -} - -int SSL_set_session(SSL *ssl, SSL_SESSION *session) -{ - memcpy(ssl->session_id, (uint8_t *)session, SSL_SESSION_ID_SIZE); - return 1; -} - -void SSL_SESSION_free(SSL_SESSION *session) { } -/*** end get/set session ***/ - -long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) -{ - return 0; -} - -void SSL_CTX_set_verify(SSL_CTX *ctx, int mode, - int (*verify_callback)(int, void *)) { } - -void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth) { } - -int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile, - const char *CApath) -{ - return 1; -} - -void *SSL_load_client_CA_file(const char *file) -{ - return (void *)file; -} - -void SSL_CTX_set_client_CA_list(SSL_CTX *ssl_ctx, void *file) -{ - - ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CERT, (const char *)file, NULL); -} - -void SSLv23_method(void) { } - -void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, void *cb) { } - -void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u) -{ - key_password = (char *)u; -} - -int SSL_peek(SSL *ssl, void *buf, int num) -{ - memcpy(buf, ssl->bm_data, num); - return num; -} - -void SSL_set_bio(SSL *ssl, void *rbio, void *wbio) { } - -long SSL_get_verify_result(const SSL *ssl) -{ - return ssl_handshake_status(ssl); -} - -int SSL_state(SSL *ssl) -{ - return 0x03; // ok state -} - -/** end of could do better list */ - -void *SSL_get_peer_certificate(const SSL *ssl) -{ - return &ssl->ssl_ctx->certs[0]; -} - -int SSL_clear(SSL *ssl) -{ - return 1; -} - - -int SSL_CTX_check_private_key(const SSL_CTX *ctx) -{ - return 1; -} - -int SSL_CTX_set_cipher_list(SSL *s, const char *str) -{ - return 1; -} - -int SSL_get_error(const SSL *ssl, int ret) -{ - ssl_display_error(ret); - return 0; /* TODO: return proper return code */ -} - -void SSL_CTX_set_options(SSL_CTX *ssl_ctx, int option) {} -int SSL_library_init(void ) { return 1; } -void SSL_load_error_strings(void ) {} -void ERR_print_errors_fp(FILE *fp) {} - -#ifndef CONFIG_SSL_SKELETON_MODE -long SSL_CTX_get_timeout(const SSL_CTX *ssl_ctx) { - return CONFIG_SSL_EXPIRY_TIME*3600; } -long SSL_CTX_set_timeout(SSL_CTX *ssl_ctx, long t) { - return SSL_CTX_get_timeout(ssl_ctx); } -#endif -void BIO_printf(FILE *f, const char *format, ...) -{ - va_list(ap); - va_start(ap, format); - vfprintf(f, format, ap); - va_end(ap); -} - -void* BIO_s_null(void) { return NULL; } -FILE *BIO_new(bio_func_type_t func) -{ - if (func == BIO_s_null) - return fopen("/dev/null", "r"); - else - return NULL; -} - -FILE *BIO_new_fp(FILE *stream, int close_flag) { return stream; } -int BIO_free(FILE *a) { if (a != stdout && a != stderr) fclose(a); return 1; } - - - -#endif diff --git a/axTLS/src/ssl/os_port.c b/axTLS/src/ssl/os_port.c deleted file mode 100644 index 9859d08..0000000 --- a/axTLS/src/ssl/os_port.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * @file os_port.c - * - * OS specific functions. - */ -#include -#include -#include -#include -#include "os_port.h" - -#ifdef _MSC_VER -/** - * gettimeofday() not in Win32 - */ -EXP_FUNC void STDCALL gettimeofday(struct timeval* t, void* timezone) -{ -#if defined(_WIN32_WCE) - t->tv_sec = time(NULL); - t->tv_usec = 0; /* 1sec precision only */ -#else - struct _timeb timebuffer; - _ftime(&timebuffer); - t->tv_sec = (long)timebuffer.time; - t->tv_usec = 1000 * timebuffer.millitm; /* 1ms precision */ -#endif -} - -/** - * strcasecmp() not in Win32 - */ -EXP_FUNC int STDCALL strcasecmp(const char *s1, const char *s2) -{ - while (tolower(*s1) == tolower(*s2++)) - { - if (*s1++ == '\0') - { - return 0; - } - } - - return *(unsigned char *)s1 - *(unsigned char *)(s2 - 1); -} - - -EXP_FUNC int STDCALL getdomainname(char *buf, int buf_size) -{ - HKEY hKey; - unsigned long datatype; - unsigned long bufferlength = buf_size; - - if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, - TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"), - 0, KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS) - return -1; - - RegQueryValueEx(hKey, "Domain", NULL, &datatype, buf, &bufferlength); - RegCloseKey(hKey); - return 0; -} -#endif - -#undef malloc -#undef realloc -#undef calloc - -static const char * out_of_mem_str = "out of memory"; -static const char * file_open_str = "Could not open file \"%s\""; - -/* - * Some functions that call display some error trace and then call abort(). - * This just makes life much easier on embedded systems, since we're - * suffering major trauma... - */ -EXP_FUNC void * STDCALL ax_malloc(size_t s) -{ - void *x; - - if ((x = malloc(s)) == NULL) - exit_now(out_of_mem_str); - - return x; -} - -EXP_FUNC void * STDCALL ax_realloc(void *y, size_t s) -{ - void *x; - - if ((x = realloc(y, s)) == NULL) - exit_now(out_of_mem_str); - - return x; -} - -EXP_FUNC void * STDCALL ax_calloc(size_t n, size_t s) -{ - void *x; - - if ((x = calloc(n, s)) == NULL) - exit_now(out_of_mem_str); - - return x; -} - -EXP_FUNC int STDCALL ax_open(const char *pathname, int flags) -{ - int x; - - if ((x = open(pathname, flags)) < 0) - exit_now(file_open_str, pathname); - - return x; -} - -/** - * This is a call which will deliberately exit an application, but will - * display some information before dying. - */ -void exit_now(const char *format, ...) -{ - va_list argp; - - va_start(argp, format); - vfprintf(stderr, format, argp); - va_end(argp); - abort(); -} - diff --git a/axTLS/src/ssl/os_port.h b/axTLS/src/ssl/os_port.h deleted file mode 100644 index b2924b4..0000000 --- a/axTLS/src/ssl/os_port.h +++ /dev/null @@ -1,208 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * @file os_port.h - * - * Some stuff to minimise the differences between windows and linux/unix - */ - -#ifndef HEADER_OS_PORT_H -#define HEADER_OS_PORT_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include - -//#if defined(WIN32) -//#define STDCALL __stdcall -//#define EXP_FUNC __declspec(dllexport) -//#else -#define STDCALL -#define EXP_FUNC -//#endif - -#if defined(_WIN32_WCE) -#undef WIN32 -#define WIN32 -#endif - -#ifdef WIN32 - -/* Windows CE stuff */ -#if defined(_WIN32_WCE) -#include -#define abort() exit(1) -#else -#include -#include -#include -#include -#endif /* _WIN32_WCE */ - -#include -#include -#undef getpid -#undef open -#undef close -#undef sleep -#undef gettimeofday -#undef dup2 -#undef unlink - -#define SOCKET_READ(A,B,C) recv(A,B,C,0) -#define SOCKET_WRITE(A,B,C) send(A,B,C,0) -#define SOCKET_CLOSE(A) closesocket(A) -#define srandom(A) srand(A) -#define random() rand() -#define getpid() _getpid() -#define snprintf _snprintf -#define open(A,B) _open(A,B) -#define dup2(A,B) _dup2(A,B) -#define unlink(A) _unlink(A) -#define close(A) _close(A) -#define read(A,B,C) _read(A,B,C) -#define write(A,B,C) _write(A,B,C) -#define sleep(A) Sleep(A*1000) -#define usleep(A) Sleep(A/1000) -#define strdup(A) _strdup(A) -#define chroot(A) _chdir(A) -#define chdir(A) _chdir(A) -#define alloca(A) _alloca(A) -#ifndef lseek -#define lseek(A,B,C) _lseek(A,B,C) -#endif - -/* This fix gets around a problem where a win32 application on a cygwin xterm - doesn't display regular output (until a certain buffer limit) - but it works - fine under a normal DOS window. This is a hack to get around the issue - - see http://www.khngai.com/emacs/tty.php */ -#define TTY_FLUSH() if (!_isatty(_fileno(stdout))) fflush(stdout); - -/* - * automatically build some library dependencies. - */ -#ifdef _MSC_VER -#pragma comment(lib, "WS2_32.lib") -#pragma comment(lib, "AdvAPI32.lib") - -typedef UINT8 uint8_t; -typedef INT8 int8_t; -typedef UINT16 uint16_t; -typedef INT16 int16_t; -typedef UINT32 uint32_t; -typedef INT32 int32_t; -typedef UINT64 uint64_t; -typedef INT64 int64_t; -typedef int socklen_t; - -EXP_FUNC void STDCALL gettimeofday(struct timeval* t,void* timezone); -EXP_FUNC int STDCALL strcasecmp(const char *s1, const char *s2); -EXP_FUNC int STDCALL getdomainname(char *buf, int buf_size); -#else -#include -#endif - -#else /* Not Win32 */ - -#ifdef CONFIG_PLATFORM_SOLARIS -#include -#else -#include -#endif /* Not Solaris */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define SOCKET_READ(A,B,C) read(A,B,C) -#define SOCKET_WRITE(A,B,C) write(A,B,C) -#define SOCKET_CLOSE(A) if (A >= 0) close(A) -#define TTY_FLUSH() - -#endif /* Not Win32 */ - -/* some functions to mutate the way these work */ -#define malloc(A) ax_malloc(A) -#ifndef realloc -#define realloc(A,B) ax_realloc(A,B) -#endif -#define calloc(A,B) ax_calloc(A,B) - -EXP_FUNC void * STDCALL ax_malloc(size_t s); -EXP_FUNC void * STDCALL ax_realloc(void *y, size_t s); -EXP_FUNC void * STDCALL ax_calloc(size_t n, size_t s); -EXP_FUNC int STDCALL ax_open(const char *pathname, int flags); - -#ifdef CONFIG_PLATFORM_LINUX -void exit_now(const char *format, ...) __attribute((noreturn)); -#else -void exit_now(const char *format, ...); -#endif - -/* Mutexing definitions */ -#if defined(CONFIG_SSL_CTX_MUTEXING) -#if defined(WIN32) -#define SSL_CTX_MUTEX_TYPE HANDLE -#define SSL_CTX_MUTEX_INIT(A) A=CreateMutex(0, FALSE, 0) -#define SSL_CTX_MUTEX_DESTROY(A) CloseHandle(A) -#define SSL_CTX_LOCK(A) WaitForSingleObject(A, INFINITE) -#define SSL_CTX_UNLOCK(A) ReleaseMutex(A) -#else -#include -#define SSL_CTX_MUTEX_TYPE pthread_mutex_t -#define SSL_CTX_MUTEX_INIT(A) pthread_mutex_init(&A, NULL) -#define SSL_CTX_MUTEX_DESTROY(A) pthread_mutex_destroy(&A) -#define SSL_CTX_LOCK(A) pthread_mutex_lock(&A) -#define SSL_CTX_UNLOCK(A) pthread_mutex_unlock(&A) -#endif -#else /* no mutexing */ -#define SSL_CTX_MUTEX_INIT(A) -#define SSL_CTX_MUTEX_DESTROY(A) -#define SSL_CTX_LOCK(A) -#define SSL_CTX_UNLOCK(A) -#endif - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/axTLS/src/ssl/p12.c b/axTLS/src/ssl/p12.c deleted file mode 100644 index 2bafaf7..0000000 --- a/axTLS/src/ssl/p12.c +++ /dev/null @@ -1,483 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * Process PKCS#8/PKCS#12 keys. - * - * The decoding of a PKCS#12 key is fairly specific - this code was tested on a - * key generated with: - * - * openssl pkcs12 -export -in axTLS.x509_1024.pem -inkey axTLS.key_1024.pem - * -keypbe PBE-SHA1-RC4-128 -certpbe PBE-SHA1-RC4-128 - * -name "p12_withoutCA" -out axTLS.withoutCA.p12 -password pass:abcd - * - * or with a certificate chain: - * - * openssl pkcs12 -export -in axTLS.x509_1024.pem -inkey axTLS.key_1024.pem - * -certfile axTLS.ca_x509.pem -keypbe PBE-SHA1-RC4-128 -certpbe - * PBE-SHA1-RC4-128 -name "p12_withCA" -out axTLS.withCA.p12 -password pass:abcd - * - * Note that the PBE has to be specified with PBE-SHA1-RC4-128. The - * private/public keys/certs have to use RSA encryption. Both the integrity - * and privacy passwords are the same. - * - * The PKCS#8 files were generated with something like: - * - * PEM format: - * openssl pkcs8 -in axTLS.key_512.pem -passout pass:abcd -topk8 -v1 - * PBE-SHA1-RC4-128 -out axTLS.encrypted_pem.p8 - * - * DER format: - * openssl pkcs8 -in axTLS.key_512.pem -passout pass:abcd -topk8 -outform DER - * -v1 PBE-SHA1-RC4-128 -out axTLS.encrypted.p8 - */ - -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -/* all commented out if not used */ -#ifdef CONFIG_SSL_USE_PKCS12 - -#define BLOCK_SIZE 64 -#define PKCS12_KEY_ID 1 -#define PKCS12_IV_ID 2 -#define PKCS12_MAC_ID 3 - -static char *make_uni_pass(const char *password, int *uni_pass_len); -static int p8_decrypt(const char *uni_pass, int uni_pass_len, - const uint8_t *salt, int iter, - uint8_t *priv_key, int priv_key_len, int id); -static int p8_add_key(SSL_CTX *ssl_ctx, uint8_t *priv_key); -static int get_pbe_params(uint8_t *buf, int *offset, - const uint8_t **salt, int *iterations); - -/* - * Take a raw pkcs8 block and then decrypt it and turn it into a normal key. - */ -int pkcs8_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password) -{ - uint8_t *buf = ssl_obj->buf; - int len, offset = 0; - int iterations; - int ret = SSL_NOT_OK; - uint8_t *version = NULL; - const uint8_t *salt; - uint8_t *priv_key; - int uni_pass_len; - char *uni_pass = make_uni_pass(password, &uni_pass_len); - - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: Invalid p8 ASN.1 file\n"); -#endif - goto error; - } - - /* unencrypted key? */ - if (asn1_get_int(buf, &offset, &version) > 0 && *version == 0) - { - ret = p8_add_key(ssl_ctx, buf); - goto error; - } - - if (get_pbe_params(buf, &offset, &salt, &iterations) < 0) - goto error; - - if ((len = asn1_next_obj(buf, &offset, ASN1_OCTET_STRING)) < 0) - goto error; - - priv_key = &buf[offset]; - - p8_decrypt(uni_pass, uni_pass_len, salt, - iterations, priv_key, len, PKCS12_KEY_ID); - ret = p8_add_key(ssl_ctx, priv_key); - -error: - free(version); - free(uni_pass); - return ret; -} - -/* - * Take the unencrypted pkcs8 and turn it into a private key - */ -static int p8_add_key(SSL_CTX *ssl_ctx, uint8_t *priv_key) -{ - uint8_t *buf = priv_key; - int len, offset = 0; - int ret = SSL_NOT_OK; - - /* Skip the preamble and go straight to the private key. - We only support rsaEncryption (1.2.840.113549.1.1.1) */ - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(buf, &offset, ASN1_INTEGER) < 0 || - asn1_skip_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OCTET_STRING)) < 0) - goto error; - - ret = asn1_get_private_key(&buf[offset], len, &ssl_ctx->rsa_ctx); - -error: - return ret; -} - -/* - * Create the unicode password - */ -static char *make_uni_pass(const char *password, int *uni_pass_len) -{ - int pass_len = 0, i; - char *uni_pass; - - if (password == NULL) - { - password = ""; - } - - uni_pass = (char *)malloc((strlen(password)+1)*2); - - /* modify the password into a unicode version */ - for (i = 0; i < (int)strlen(password); i++) - { - uni_pass[pass_len++] = 0; - uni_pass[pass_len++] = password[i]; - } - - uni_pass[pass_len++] = 0; /* null terminate */ - uni_pass[pass_len++] = 0; - *uni_pass_len = pass_len; - return uni_pass; -} - -/* - * Decrypt a pkcs8 block. - */ -static int p8_decrypt(const char *uni_pass, int uni_pass_len, - const uint8_t *salt, int iter, - uint8_t *priv_key, int priv_key_len, int id) -{ - uint8_t p[BLOCK_SIZE*2]; - uint8_t d[BLOCK_SIZE]; - uint8_t Ai[SHA1_SIZE]; - SHA1_CTX sha_ctx; - RC4_CTX rc4_ctx; - int i; - - for (i = 0; i < BLOCK_SIZE; i++) - { - p[i] = salt[i % SALT_SIZE]; - p[BLOCK_SIZE+i] = uni_pass[i % uni_pass_len]; - d[i] = id; - } - - /* get the key - no IV since we are using RC4 */ - SHA1_Init(&sha_ctx); - SHA1_Update(&sha_ctx, d, sizeof(d)); - SHA1_Update(&sha_ctx, p, sizeof(p)); - SHA1_Final(Ai, &sha_ctx); - - for (i = 1; i < iter; i++) - { - SHA1_Init(&sha_ctx); - SHA1_Update(&sha_ctx, Ai, SHA1_SIZE); - SHA1_Final(Ai, &sha_ctx); - } - - /* do the decryption */ - if (id == PKCS12_KEY_ID) - { - RC4_setup(&rc4_ctx, Ai, 16); - RC4_crypt(&rc4_ctx, priv_key, priv_key, priv_key_len); - } - else /* MAC */ - memcpy(priv_key, Ai, SHA1_SIZE); - - return 0; -} - -/* - * Take a raw pkcs12 block and the decrypt it and turn it into a certificate(s) - * and keys. - */ -int pkcs12_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password) -{ - uint8_t *buf = ssl_obj->buf; - int len, iterations, auth_safes_start, - auth_safes_end, auth_safes_len, key_offset, offset = 0; - int all_certs = 0; - uint8_t *version = NULL, *auth_safes = NULL, *cert, *orig_mac; - uint8_t key[SHA1_SIZE]; - uint8_t mac[SHA1_SIZE]; - const uint8_t *salt; - int uni_pass_len, ret = SSL_OK; - char *uni_pass = make_uni_pass(password, &uni_pass_len); - static const uint8_t pkcs_data[] = /* pkc7 data */ - { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01 }; - static const uint8_t pkcs_encrypted[] = /* pkc7 encrypted */ - { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x06 }; - static const uint8_t pkcs8_key_bag[] = /* 1.2.840.113549.1.12.10.1.2 */ - { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x0a, 0x01, 0x02 }; - - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: Invalid p12 ASN.1 file\n"); -#endif - goto error; - } - - if (asn1_get_int(buf, &offset, &version) < 0 || *version != 3) - { - ret = SSL_ERROR_INVALID_VERSION; - goto error; - } - - /* remove all the boring pcks7 bits */ - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OID)) < 0 || - len != sizeof(pkcs_data) || - memcmp(&buf[offset], pkcs_data, sizeof(pkcs_data))) - goto error; - - offset += len; - - if (asn1_next_obj(buf, &offset, ASN1_EXPLICIT_TAG) < 0 || - asn1_next_obj(buf, &offset, ASN1_OCTET_STRING) < 0) - goto error; - - /* work out the MAC start/end points (done on AuthSafes) */ - auth_safes_start = offset; - auth_safes_end = offset; - if (asn1_skip_obj(buf, &auth_safes_end, ASN1_SEQUENCE) < 0) - goto error; - - auth_safes_len = auth_safes_end - auth_safes_start; - auth_safes = malloc(auth_safes_len); - - memcpy(auth_safes, &buf[auth_safes_start], auth_safes_len); - - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OID)) < 0 || - (len != sizeof(pkcs_encrypted) || - memcmp(&buf[offset], pkcs_encrypted, sizeof(pkcs_encrypted)))) - goto error; - - offset += len; - - if (asn1_next_obj(buf, &offset, ASN1_EXPLICIT_TAG) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(buf, &offset, ASN1_INTEGER) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OID)) < 0 || - len != sizeof(pkcs_data) || - memcmp(&buf[offset], pkcs_data, sizeof(pkcs_data))) - goto error; - - offset += len; - - /* work out the salt for the certificate */ - if (get_pbe_params(buf, &offset, &salt, &iterations) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_IMPLICIT_TAG)) < 0) - goto error; - - /* decrypt the certificate */ - cert = &buf[offset]; - if ((ret = p8_decrypt(uni_pass, uni_pass_len, salt, iterations, cert, - len, PKCS12_KEY_ID)) < 0) - goto error; - - offset += len; - - /* load the certificate */ - key_offset = 0; - all_certs = asn1_next_obj(cert, &key_offset, ASN1_SEQUENCE); - - /* keep going until all certs are loaded */ - while (key_offset < all_certs) - { - int cert_offset = key_offset; - - if (asn1_skip_obj(cert, &cert_offset, ASN1_SEQUENCE) < 0 || - asn1_next_obj(cert, &key_offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(cert, &key_offset, ASN1_OID) < 0 || - asn1_next_obj(cert, &key_offset, ASN1_EXPLICIT_TAG) < 0 || - asn1_next_obj(cert, &key_offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(cert, &key_offset, ASN1_OID) < 0 || - asn1_next_obj(cert, &key_offset, ASN1_EXPLICIT_TAG) < 0 || - (len = asn1_next_obj(cert, &key_offset, ASN1_OCTET_STRING)) < 0) - goto error; - - if ((ret = add_cert(ssl_ctx, &cert[key_offset], len)) < 0) - goto error; - - key_offset = cert_offset; - } - - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OID)) < 0 || - len != sizeof(pkcs_data) || - memcmp(&buf[offset], pkcs_data, sizeof(pkcs_data))) - goto error; - - offset += len; - - if (asn1_next_obj(buf, &offset, ASN1_EXPLICIT_TAG) < 0 || - asn1_next_obj(buf, &offset, ASN1_OCTET_STRING) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OID)) < 0 || - (len != sizeof(pkcs8_key_bag)) || - memcmp(&buf[offset], pkcs8_key_bag, sizeof(pkcs8_key_bag))) - goto error; - - offset += len; - - /* work out the salt for the private key */ - if (asn1_next_obj(buf, &offset, ASN1_EXPLICIT_TAG) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - get_pbe_params(buf, &offset, &salt, &iterations) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OCTET_STRING)) < 0) - goto error; - - /* decrypt the private key */ - cert = &buf[offset]; - if ((ret = p8_decrypt(uni_pass, uni_pass_len, salt, iterations, cert, - len, PKCS12_KEY_ID)) < 0) - goto error; - - offset += len; - - /* load the private key */ - if ((ret = p8_add_key(ssl_ctx, cert)) < 0) - goto error; - - /* miss out on friendly name, local key id etc */ - if (asn1_skip_obj(buf, &offset, ASN1_SET) < 0) - goto error; - - /* work out the MAC */ - if (asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_next_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(buf, &offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, &offset, ASN1_OCTET_STRING)) < 0 || - len != SHA1_SIZE) - goto error; - - orig_mac = &buf[offset]; - offset += len; - - /* get the salt */ - if ((len = asn1_next_obj(buf, &offset, ASN1_OCTET_STRING)) < 0 || len != 8) - goto error; - - salt = &buf[offset]; - - /* work out what the mac should be */ - if ((ret = p8_decrypt(uni_pass, uni_pass_len, salt, iterations, - key, SHA1_SIZE, PKCS12_MAC_ID)) < 0) - goto error; - - hmac_sha1(auth_safes, auth_safes_len, key, SHA1_SIZE, mac); - - if (memcmp(mac, orig_mac, SHA1_SIZE)) - { - ret = SSL_ERROR_INVALID_HMAC; - goto error; - } - -error: - free(version); - free(uni_pass); - free(auth_safes); - return ret; -} - -/* - * Retrieve the salt/iteration details from a PBE block. - */ -static int get_pbe_params(uint8_t *buf, int *offset, - const uint8_t **salt, int *iterations) -{ - static const uint8_t pbeSH1RC4[] = /* pbeWithSHAAnd128BitRC4 */ - { 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x0c, 0x01, 0x01 }; - - int i, len; - uint8_t *iter = NULL; - int error_code = SSL_ERROR_NOT_SUPPORTED; - - /* Get the PBE type */ - if (asn1_next_obj(buf, offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, offset, ASN1_OID)) < 0) - goto error; - - /* we expect pbeWithSHAAnd128BitRC4 (1.2.840.113549.1.12.1.1) - which is the only algorithm we support */ - if (len != sizeof(pbeSH1RC4) || - memcmp(&buf[*offset], pbeSH1RC4, sizeof(pbeSH1RC4))) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: pkcs8/pkcs12 must use \"PBE-SHA1-RC4-128\"\n"); -#endif - goto error; - } - - *offset += len; - - if (asn1_next_obj(buf, offset, ASN1_SEQUENCE) < 0 || - (len = asn1_next_obj(buf, offset, ASN1_OCTET_STRING)) < 0 || - len != 8) - goto error; - - *salt = &buf[*offset]; - *offset += len; - - if ((len = asn1_get_int(buf, offset, &iter)) < 0) - goto error; - - *iterations = 0; - for (i = 0; i < len; i++) - { - (*iterations) <<= 8; - (*iterations) += iter[i]; - } - - free(iter); - error_code = SSL_OK; /* got here - we are ok */ - -error: - return error_code; -} - -#endif diff --git a/axTLS/src/ssl/private_key.h b/axTLS/src/ssl/private_key.h deleted file mode 100644 index ce7985c..0000000 --- a/axTLS/src/ssl/private_key.h +++ /dev/null @@ -1,54 +0,0 @@ -unsigned char default_private_key[] = { - 0x30, 0x82, 0x02, 0x5d, 0x02, 0x01, 0x00, 0x02, 0x81, 0x81, 0x00, 0xcd, - 0xfd, 0x89, 0x48, 0xbe, 0x36, 0xb9, 0x95, 0x76, 0xd4, 0x13, 0x30, 0x0e, - 0xbf, 0xb2, 0xed, 0x67, 0x0a, 0xc0, 0x16, 0x3f, 0x51, 0x09, 0x9d, 0x29, - 0x2f, 0xb2, 0x6d, 0x3f, 0x3e, 0x6c, 0x2f, 0x90, 0x80, 0xa1, 0x71, 0xdf, - 0xbe, 0x38, 0xc5, 0xcb, 0xa9, 0x9a, 0x40, 0x14, 0x90, 0x0a, 0xf9, 0xb7, - 0x07, 0x0b, 0xe1, 0xda, 0xe7, 0x09, 0xbf, 0x0d, 0x57, 0x41, 0x86, 0x60, - 0xa1, 0xc1, 0x27, 0x91, 0x5b, 0x0a, 0x98, 0x46, 0x1b, 0xf6, 0xa2, 0x84, - 0xf8, 0x65, 0xc7, 0xce, 0x2d, 0x96, 0x17, 0xaa, 0x91, 0xf8, 0x61, 0x04, - 0x50, 0x70, 0xeb, 0xb4, 0x43, 0xb7, 0xdc, 0x9a, 0xcc, 0x31, 0x01, 0x14, - 0xd4, 0xcd, 0xcc, 0xc2, 0x37, 0x6d, 0x69, 0x82, 0xd6, 0xc6, 0xc4, 0xbe, - 0xf2, 0x34, 0xa5, 0xc9, 0xa6, 0x19, 0x53, 0x32, 0x7a, 0x86, 0x0e, 0x91, - 0x82, 0x0f, 0xa1, 0x42, 0x54, 0xaa, 0x01, 0x02, 0x03, 0x01, 0x00, 0x01, - 0x02, 0x81, 0x81, 0x00, 0x95, 0xaa, 0x6e, 0x11, 0xf5, 0x6a, 0x8b, 0xa2, - 0xc6, 0x48, 0xc6, 0x7c, 0x37, 0x6b, 0x1f, 0x55, 0x10, 0x76, 0x26, 0x24, - 0xc3, 0xf2, 0x5c, 0x5a, 0xdd, 0x2e, 0xf3, 0xa4, 0x1e, 0xbc, 0x7b, 0x1c, - 0x80, 0x10, 0x85, 0xbc, 0xd8, 0x45, 0x3c, 0xb8, 0xb2, 0x06, 0x53, 0xb5, - 0xd5, 0x7a, 0xe7, 0x0e, 0x92, 0xe6, 0x42, 0xc2, 0xe2, 0x2a, 0xd5, 0xd1, - 0x03, 0x9f, 0x6f, 0x53, 0x74, 0x68, 0x72, 0x8e, 0xbf, 0x03, 0xbb, 0xab, - 0xbd, 0xa1, 0xf9, 0x81, 0x7d, 0x12, 0xd4, 0x9d, 0xb6, 0xae, 0x4c, 0xad, - 0xca, 0xa8, 0xc9, 0x80, 0x8d, 0x0d, 0xd5, 0xd0, 0xa1, 0xbf, 0xec, 0x60, - 0x48, 0x49, 0xed, 0x97, 0x0f, 0x5e, 0xed, 0xfc, 0x39, 0x15, 0x96, 0x9e, - 0x5d, 0xe2, 0xb4, 0x5d, 0x2e, 0x04, 0xdc, 0x08, 0xa2, 0x65, 0x29, 0x2d, - 0x37, 0xfb, 0x62, 0x90, 0x1b, 0x7b, 0xe5, 0x3a, 0x58, 0x05, 0x55, 0xc1, - 0x02, 0x41, 0x00, 0xfc, 0x69, 0x28, 0xc9, 0xa8, 0xc4, 0x5c, 0xe3, 0xd0, - 0x5e, 0xaa, 0xda, 0xde, 0x87, 0x74, 0xdb, 0xcb, 0x40, 0x78, 0x8e, 0x1d, - 0x12, 0x96, 0x16, 0x61, 0x3f, 0xb3, 0x3e, 0xa3, 0x0d, 0xdc, 0x49, 0xa5, - 0x25, 0x87, 0xc5, 0x97, 0x85, 0x9d, 0xbb, 0xb4, 0xf0, 0x44, 0xfd, 0x6c, - 0xe8, 0xd2, 0x8c, 0xec, 0x33, 0x81, 0x46, 0x1e, 0x10, 0x12, 0x33, 0x16, - 0x95, 0x00, 0x4f, 0x75, 0xb4, 0xe5, 0x79, 0x02, 0x41, 0x00, 0xd0, 0xeb, - 0x65, 0x07, 0x10, 0x3b, 0xd9, 0x03, 0xeb, 0xdc, 0x6f, 0x4b, 0x8f, 0xc3, - 0x87, 0xce, 0x76, 0xd6, 0xc5, 0x14, 0x21, 0x4e, 0xe7, 0x4f, 0x1b, 0xe8, - 0x05, 0xf8, 0x84, 0x1a, 0xe0, 0xc5, 0xd6, 0xe3, 0x08, 0xb3, 0x54, 0x57, - 0x02, 0x1f, 0xd4, 0xd9, 0xfb, 0xff, 0x40, 0xb1, 0x56, 0x1c, 0x60, 0xf7, - 0xac, 0x91, 0xf3, 0xd3, 0xc6, 0x7f, 0x84, 0xfd, 0x84, 0x9d, 0xea, 0x26, - 0xee, 0xc9, 0x02, 0x41, 0x00, 0xa6, 0xcf, 0x1c, 0x6c, 0x81, 0x03, 0x1c, - 0x5c, 0x56, 0x05, 0x6a, 0x26, 0x70, 0xef, 0xd6, 0x13, 0xb7, 0x74, 0x28, - 0xf7, 0xca, 0x50, 0xd1, 0x2d, 0x83, 0x21, 0x64, 0xe4, 0xdd, 0x3f, 0x38, - 0xb8, 0xd6, 0xd2, 0x41, 0xb3, 0x1c, 0x9a, 0xea, 0x0d, 0xf5, 0xda, 0xdf, - 0xcd, 0x17, 0x9f, 0x9a, 0x1e, 0x15, 0xaf, 0x48, 0x1c, 0xbd, 0x9b, 0x63, - 0x5b, 0xad, 0xed, 0xd4, 0xa1, 0xae, 0xa9, 0x59, 0x09, 0x02, 0x40, 0x4e, - 0x08, 0xce, 0xa8, 0x8f, 0xc0, 0xba, 0xf3, 0x83, 0x02, 0xc8, 0x33, 0x62, - 0x14, 0x77, 0xc2, 0x7f, 0x93, 0x02, 0xf3, 0xdc, 0xe9, 0x1a, 0xee, 0xea, - 0x8e, 0x84, 0xc4, 0x69, 0x9b, 0x9c, 0x7f, 0x69, 0x1f, 0x4e, 0x1d, 0xa5, - 0x90, 0x06, 0x44, 0x1b, 0x7d, 0xfc, 0x69, 0x40, 0x21, 0xbc, 0xf7, 0x46, - 0xa4, 0xdc, 0x39, 0x7b, 0xe8, 0x8b, 0x49, 0x10, 0x44, 0x9d, 0x67, 0x5a, - 0x91, 0x86, 0x39, 0x02, 0x40, 0x41, 0x2c, 0x4e, 0xfe, 0xd9, 0x90, 0x89, - 0x00, 0x5c, 0x94, 0x0a, 0x4a, 0x7e, 0x1b, 0x1a, 0x80, 0x06, 0x01, 0x37, - 0xda, 0x50, 0x61, 0x9d, 0x9c, 0xfe, 0x25, 0x7f, 0xd8, 0xd4, 0xc4, 0x9e, - 0x81, 0xf2, 0x0c, 0x1e, 0x38, 0x21, 0x1e, 0x90, 0x3f, 0xd4, 0xba, 0x6c, - 0x53, 0xcb, 0xf0, 0x77, 0x79, 0x9b, 0xf1, 0xfa, 0x3f, 0x81, 0xdc, 0xf3, - 0x21, 0x02, 0x6d, 0xb7, 0x95, 0xc3, 0x2e, 0xce, 0xd5 -}; -unsigned int default_private_key_len = 609; diff --git a/axTLS/src/ssl/ssl.h b/axTLS/src/ssl/ssl.h deleted file mode 100644 index 198efc6..0000000 --- a/axTLS/src/ssl/ssl.h +++ /dev/null @@ -1,499 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * @mainpage axTLS API - * - * @image html axolotl.jpg - * - * The axTLS library has features such as: - * - The TLSv1 SSL client/server protocol - * - No requirement to use any openssl libraries. - * - A choice between AES block (128/256 bit) and RC4 (128 bit) stream ciphers. - * - RSA encryption/decryption with variable sized keys (up to 4096 bits). - * - Certificate chaining and peer authentication. - * - Session resumption, session renegotiation. - * - ASN.1, X.509, PKCS#8, PKCS#12 keys/certificates with DER/PEM encoding. - * - Highly configurable compile time options. - * - Portable across many platforms (written in ANSI C), and has language - * bindings in C, C#, VB.NET, Java, Perl and Lua. - * - Partial openssl API compatibility (via a wrapper). - * - A very small footprint (around 50-60kB for the library in 'server-only' - * mode). - * - No dependencies on sockets - can use serial connections for example. - * - A very simple API - ~ 20 functions/methods. - * - * A list of these functions/methods are described below. - * - * @ref c_api - * - * @ref bigint_api - * - * @ref csharp_api - * - * @ref java_api - */ -#ifndef HEADER_SSL_H -#define HEADER_SSL_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include - -/* need to predefine before ssl_lib.h gets to it */ -#define SSL_SESSION_ID_SIZE 32 - -#include "tls1.h" - -/* The optional parameters that can be given to the client/server SSL engine */ -#define SSL_CLIENT_AUTHENTICATION 0x00010000 -#define SSL_SERVER_VERIFY_LATER 0x00020000 -#define SSL_NO_DEFAULT_KEY 0x00040000 -#define SSL_DISPLAY_STATES 0x00080000 -#define SSL_DISPLAY_BYTES 0x00100000 -#define SSL_DISPLAY_CERTS 0x00200000 -#define SSL_DISPLAY_RSA 0x00400000 -#define SSL_CONNECT_IN_PARTS 0x00800000 - -/* errors that can be generated */ -#define SSL_OK 0 -#define SSL_NOT_OK -1 -#define SSL_ERROR_DEAD -2 -#define SSL_CLOSE_NOTIFY -3 -#define SSL_ERROR_CONN_LOST -256 -#define SSL_ERROR_SOCK_SETUP_FAILURE -258 -#define SSL_ERROR_INVALID_HANDSHAKE -260 -#define SSL_ERROR_INVALID_PROT_MSG -261 -#define SSL_ERROR_INVALID_HMAC -262 -#define SSL_ERROR_INVALID_VERSION -263 -#define SSL_ERROR_INVALID_SESSION -265 -#define SSL_ERROR_NO_CIPHER -266 -#define SSL_ERROR_BAD_CERTIFICATE -268 -#define SSL_ERROR_INVALID_KEY -269 -#define SSL_ERROR_FINISHED_INVALID -271 -#define SSL_ERROR_NO_CERT_DEFINED -272 -#define SSL_ERROR_NO_CLIENT_RENOG -273 -#define SSL_ERROR_NOT_SUPPORTED -274 -#define SSL_X509_OFFSET -512 -#define SSL_X509_ERROR(A) (SSL_X509_OFFSET+A) - -/* alert types that are recognized */ -#define SSL_ALERT_TYPE_WARNING 1 -#define SLL_ALERT_TYPE_FATAL 2 - -/* these are all the alerts that are recognized */ -#define SSL_ALERT_CLOSE_NOTIFY 0 -#define SSL_ALERT_UNEXPECTED_MESSAGE 10 -#define SSL_ALERT_BAD_RECORD_MAC 20 -#define SSL_ALERT_HANDSHAKE_FAILURE 40 -#define SSL_ALERT_BAD_CERTIFICATE 42 -#define SSL_ALERT_ILLEGAL_PARAMETER 47 -#define SSL_ALERT_DECODE_ERROR 50 -#define SSL_ALERT_DECRYPT_ERROR 51 -#define SSL_ALERT_INVALID_VERSION 70 -#define SSL_ALERT_NO_RENEGOTIATION 100 - -/* The ciphers that are supported */ -#define SSL_AES128_SHA 0x2f -#define SSL_AES256_SHA 0x35 -#define SSL_RC4_128_SHA 0x05 -#define SSL_RC4_128_MD5 0x04 - -/* build mode ids' */ -#define SSL_BUILD_SKELETON_MODE 0x01 -#define SSL_BUILD_SERVER_ONLY 0x02 -#define SSL_BUILD_ENABLE_VERIFICATION 0x03 -#define SSL_BUILD_ENABLE_CLIENT 0x04 -#define SSL_BUILD_FULL_MODE 0x05 - -/* offsets to retrieve configuration information */ -#define SSL_BUILD_MODE 0 -#define SSL_MAX_CERT_CFG_OFFSET 1 -#define SSL_MAX_CA_CERT_CFG_OFFSET 2 -#define SSL_HAS_PEM 3 - -/* default session sizes */ -#define SSL_DEFAULT_SVR_SESS 5 -#define SSL_DEFAULT_CLNT_SESS 1 - -/* X.509/X.520 distinguished name types */ -#define SSL_X509_CERT_COMMON_NAME 0 -#define SSL_X509_CERT_ORGANIZATION 1 -#define SSL_X509_CERT_ORGANIZATIONAL_NAME 2 -#define SSL_X509_CA_CERT_COMMON_NAME 3 -#define SSL_X509_CA_CERT_ORGANIZATION 4 -#define SSL_X509_CA_CERT_ORGANIZATIONAL_NAME 5 - -/* SSL object loader types */ -#define SSL_OBJ_X509_CERT 1 -#define SSL_OBJ_X509_CACERT 2 -#define SSL_OBJ_RSA_KEY 3 -#define SSL_OBJ_PKCS8 4 -#define SSL_OBJ_PKCS12 5 - -/** - * @defgroup c_api Standard C API - * @brief The standard interface in C. - * @{ - */ - -/** - * @brief Establish a new client/server context. - * - * This function is called before any client/server SSL connections are made. - * - * Each new connection will use the this context's private key and - * certificate chain. If a different certificate chain is required, then a - * different context needs to be be used. - * - * There are two threading models supported - a single thread with one - * SSL_CTX can support any number of SSL connections - and multiple threads can - * support one SSL_CTX object each (the default). But if a single SSL_CTX - * object uses many SSL objects in individual threads, then the - * CONFIG_SSL_CTX_MUTEXING option needs to be configured. - * - * @param options [in] Any particular options. At present the options - * supported are: - * - SSL_SERVER_VERIFY_LATER (client only): Don't stop a handshake if the server - * authentication fails. The certificate can be authenticated later with a - * call to ssl_verify_cert(). - * - SSL_CLIENT_AUTHENTICATION (server only): Enforce client authentication - * i.e. each handshake will include a "certificate request" message from the - * server. Only available if verification has been enabled. - * - SSL_DISPLAY_BYTES (full mode build only): Display the byte sequences - * during the handshake. - * - SSL_DISPLAY_STATES (full mode build only): Display the state changes - * during the handshake. - * - SSL_DISPLAY_CERTS (full mode build only): Display the certificates that - * are passed during a handshake. - * - SSL_DISPLAY_RSA (full mode build only): Display the RSA key details that - * are passed during a handshake. - * - SSL_CONNECT_IN_PARTS (client only): To use a non-blocking version of - * ssl_client_new(). - * @param num_sessions [in] The number of sessions to be used for session - * caching. If this value is 0, then there is no session caching. This option - * is not used in skeleton mode. - * @return A client/server context. - */ -EXP_FUNC SSL_CTX * STDCALL ssl_ctx_new(uint32_t options, int num_sessions); - -/** - * @brief Remove a client/server context. - * - * Frees any used resources used by this context. Each connection will be - * sent a "Close Notify" alert (if possible). - * @param ssl_ctx [in] The client/server context. - */ -EXP_FUNC void STDCALL ssl_ctx_free(SSL_CTX *ssl_ctx); - -/** - * @brief (server only) Establish a new SSL connection to an SSL client. - * - * It is up to the application to establish the logical connection (whether it - * is a socket, serial connection etc). - * @param ssl_ctx [in] The server context. - * @param client_fd [in] The client's file descriptor. - * @return An SSL object reference. - */ -EXP_FUNC SSL * STDCALL ssl_server_new(SSL_CTX *ssl_ctx, int client_fd); - -/** - * @brief (client only) Establish a new SSL connection to an SSL server. - * - * It is up to the application to establish the initial logical connection - * (whether it is a socket, serial connection etc). - * - * This is a normally a blocking call - it will finish when the handshake is - * complete (or has failed). To use in non-blocking mode, set - * SSL_CONNECT_IN_PARTS in ssl_ctx_new(). - * @param ssl_ctx [in] The client context. - * @param client_fd [in] The client's file descriptor. - * @param session_id [in] A 32 byte session id for session resumption. This - * can be null if no session resumption is being used or required. This option - * is not used in skeleton mode. - * @param sess_id_size The size of the session id (max 32) - * @return An SSL object reference. Use ssl_handshake_status() to check - * if a handshake succeeded. - */ -EXP_FUNC SSL * STDCALL ssl_client_new(SSL_CTX *ssl_ctx, int client_fd, const uint8_t *session_id, uint8_t sess_id_size); - -/** - * @brief Free any used resources on this connection. - - * A "Close Notify" message is sent on this connection (if possible). It is up - * to the application to close the socket or file descriptor. - * @param ssl [in] The ssl object reference. - */ -EXP_FUNC void STDCALL ssl_free(SSL *ssl); - -/** - * @brief Read the SSL data stream. - * If the socket is non-blocking and data is blocked then SSO_OK will be - * returned. - * @param ssl [in] An SSL object reference. - * @param in_data [out] If the read was successful, a pointer to the read - * buffer will be here. Do NOT ever free this memory as this buffer is used in - * sucessive calls. If the call was unsuccessful, this value will be null. - * @return The number of decrypted bytes: - * - if > 0, then the handshaking is complete and we are returning the number - * of decrypted bytes. - * - SSL_OK if the handshaking stage is successful (but not yet complete). - * - < 0 if an error. - * @see ssl.h for the error code list. - * @note Use in_data before doing any successive ssl calls. - */ -EXP_FUNC int STDCALL ssl_read(SSL *ssl, uint8_t **in_data); - -/** - * @brief Write to the SSL data stream. - * if the socket is non-blocking and data is blocked then a check is made - * to ensure that all data is sent (i.e. blocked mode is forced). - * @param ssl [in] An SSL obect reference. - * @param out_data [in] The data to be written - * @param out_len [in] The number of bytes to be written. - * @return The number of bytes sent, or if < 0 if an error. - * @see ssl.h for the error code list. - */ -EXP_FUNC int STDCALL ssl_write(SSL *ssl, const uint8_t *out_data, int out_len); - -/** - * @brief Find an ssl object based on a file descriptor. - * - * Goes through the list of SSL objects maintained in a client/server context - * to look for a file descriptor match. - * @param ssl_ctx [in] The client/server context. - * @param client_fd [in] The file descriptor. - * @return A reference to the SSL object. Returns null if the object could not - * be found. - */ -EXP_FUNC SSL * STDCALL ssl_find(SSL_CTX *ssl_ctx, int client_fd); - -/** - * @brief Get the session id for a handshake. - * - * This will be a 32 byte sequence and is available after the first - * handshaking messages are sent. - * @param ssl [in] An SSL object reference. - * @return The session id as a 32 byte sequence. - * @note A SSLv23 handshake may have only 16 valid bytes. - */ -EXP_FUNC const uint8_t * STDCALL ssl_get_session_id(const SSL *ssl); - -/** - * @brief Get the session id size for a handshake. - * - * This will normally be 32 but could be 0 (no session id) or something else. - * @param ssl [in] An SSL object reference. - * @return The size of the session id. - */ -EXP_FUNC uint8_t STDCALL ssl_get_session_id_size(const SSL *ssl); - -/** - * @brief Return the cipher id (in the SSL form). - * @param ssl [in] An SSL object reference. - * @return The cipher id. This will be one of the following: - * - SSL_AES128_SHA (0x2f) - * - SSL_AES256_SHA (0x35) - * - SSL_RC4_128_SHA (0x05) - * - SSL_RC4_128_MD5 (0x04) - */ -EXP_FUNC uint8_t STDCALL ssl_get_cipher_id(const SSL *ssl); - -/** - * @brief Return the status of the handshake. - * @param ssl [in] An SSL object reference. - * @return SSL_OK if the handshake is complete and ok. - * @see ssl.h for the error code list. - */ -EXP_FUNC int STDCALL ssl_handshake_status(const SSL *ssl); - -/** - * @brief Retrieve various parameters about the axTLS engine. - * @param offset [in] The configuration offset. It will be one of the following: - * - SSL_BUILD_MODE The build mode. This will be one of the following: - * - SSL_BUILD_SERVER_ONLY (basic server mode) - * - SSL_BUILD_ENABLE_VERIFICATION (server can do client authentication) - * - SSL_BUILD_ENABLE_CLIENT (client/server capabilties) - * - SSL_BUILD_FULL_MODE (client/server with diagnostics) - * - SSL_BUILD_SKELETON_MODE (skeleton mode) - * - SSL_MAX_CERT_CFG_OFFSET The maximum number of certificates allowed. - * - SSL_MAX_CA_CERT_CFG_OFFSET The maximum number of CA certificates allowed. - * - SSL_HAS_PEM 1 if supported - * @return The value of the requested parameter. - */ -EXP_FUNC int STDCALL ssl_get_config(int offset); - -/** - * @brief Display why the handshake failed. - * - * This call is only useful in a 'full mode' build. The output is to stdout. - * @param error_code [in] An error code. - * @see ssl.h for the error code list. - */ -EXP_FUNC void STDCALL ssl_display_error(int error_code); - -/** - * @brief Authenticate a received certificate. - * - * This call is usually made by a client after a handshake is complete and the - * context is in SSL_SERVER_VERIFY_LATER mode. - * @param ssl [in] An SSL object reference. - * @return SSL_OK if the certificate is verified. - */ -EXP_FUNC int STDCALL ssl_verify_cert(const SSL *ssl); - -/** - * @brief Retrieve an X.509 distinguished name component. - * - * When a handshake is complete and a certificate has been exchanged, then the - * details of the remote certificate can be retrieved. - * - * This will usually be used by a client to check that the server's common - * name matches the URL. - * - * @param ssl [in] An SSL object reference. - * @param component [in] one of: - * - SSL_X509_CERT_COMMON_NAME - * - SSL_X509_CERT_ORGANIZATION - * - SSL_X509_CERT_ORGANIZATIONAL_NAME - * - SSL_X509_CA_CERT_COMMON_NAME - * - SSL_X509_CA_CERT_ORGANIZATION - * - SSL_X509_CA_CERT_ORGANIZATIONAL_NAME - * @return The appropriate string (or null if not defined) - * @note Verification build mode must be enabled. - */ -EXP_FUNC const char * STDCALL ssl_get_cert_dn(const SSL *ssl, int component); - -/** - * @brief Retrieve a Subject Alternative DNSName - * - * When a handshake is complete and a certificate has been exchanged, then the - * details of the remote certificate can be retrieved. - * - * This will usually be used by a client to check that the server's DNS - * name matches the URL. - * - * @param ssl [in] An SSL object reference. - * @param dnsindex [in] The index of the DNS name to retrieve. - * @return The appropriate string (or null if not defined) - * @note Verification build mode must be enabled. - */ -EXP_FUNC const char * STDCALL ssl_get_cert_subject_alt_dnsname(const SSL *ssl, int dnsindex); - -/** - * @brief Force the client to perform its handshake again. - * - * For a client this involves sending another "client hello" message. - * For the server is means sending a "hello request" message. - * - * This is a blocking call on the client (until the handshake completes). - * - * @param ssl [in] An SSL object reference. - * @return SSL_OK if renegotiation instantiation was ok - */ -EXP_FUNC int STDCALL ssl_renegotiate(SSL *ssl); - -/** - * @brief Process a file that is in binary DER or ASCII PEM format. - * - * These are temporary objects that are used to load private keys, - * certificates etc into memory. - * @param ssl_ctx [in] The client/server context. - * @param obj_type [in] The format of the file. Can be one of: - * - SSL_OBJ_X509_CERT (no password required) - * - SSL_OBJ_X509_CACERT (no password required) - * - SSL_OBJ_RSA_KEY (AES128/AES256 PEM encryption supported) - * - SSL_OBJ_PKCS8 (RC4-128 encrypted data supported) - * - SSL_OBJ_PKCS12 (RC4-128 encrypted data supported) - * - * PEM files are automatically detected (if supported). The object type is - * also detected, and so is not relevant for these types of files. - * @param filename [in] The location of a file in DER/PEM format. - * @param password [in] The password used. Can be null if not required. - * @return SSL_OK if all ok - * @note Not available in skeleton build mode. - */ -EXP_FUNC int STDCALL ssl_obj_load(SSL_CTX *ssl_ctx, int obj_type, const char *filename, const char *password); - -/** - * @brief Process binary data. - * - * These are temporary objects that are used to load private keys, - * certificates etc into memory. - * @param ssl_ctx [in] The client/server context. - * @param obj_type [in] The format of the memory data. - * @param data [in] The binary data to be loaded. - * @param len [in] The amount of data to be loaded. - * @param password [in] The password used. Can be null if not required. - * @return SSL_OK if all ok - * @see ssl_obj_load for more details on obj_type. - */ -EXP_FUNC int STDCALL ssl_obj_memory_load(SSL_CTX *ssl_ctx, int obj_type, const uint8_t *data, int len, const char *password); - -#ifdef CONFIG_SSL_GENERATE_X509_CERT -/** - * @brief Create an X.509 certificate. - * - * This certificate is a self-signed v1 cert with a fixed start/stop validity - * times. It is signed with an internal private key in ssl_ctx. - * - * @param ssl_ctx [in] The client/server context. - * @param options [in] Not used yet. - * @param dn [in] An array of distinguished name strings. The array is defined - * by: - * - SSL_X509_CERT_COMMON_NAME (0) - * - If SSL_X509_CERT_COMMON_NAME is empty or not defined, then the - * hostname will be used. - * - SSL_X509_CERT_ORGANIZATION (1) - * - If SSL_X509_CERT_ORGANIZATION is empty or not defined, then $USERNAME - * will be used. - * - SSL_X509_CERT_ORGANIZATIONAL_NAME (2) - * - SSL_X509_CERT_ORGANIZATIONAL_NAME is optional. - * @param cert_data [out] The certificate as a sequence of bytes. - * @return < 0 if an error, or the size of the certificate in bytes. - * @note cert_data must be freed when there is no more need for it. - */ -EXP_FUNC int STDCALL ssl_x509_create(SSL_CTX *ssl_ctx, uint32_t options, const char * dn[], uint8_t **cert_data); -#endif - -/** - * @brief Return the axTLS library version as a string. - */ -EXP_FUNC const char * STDCALL ssl_version(void); - -/** @} */ - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/axTLS/src/ssl/tls1.c b/axTLS/src/ssl/tls1.c deleted file mode 100644 index 4b18365..0000000 --- a/axTLS/src/ssl/tls1.c +++ /dev/null @@ -1,2195 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * Common ssl/tlsv1 code to both the client and server implementations. - */ - -#include -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -/* The session expiry time */ -#define SSL_EXPIRY_TIME (CONFIG_SSL_EXPIRY_TIME*3600) - -static const uint8_t g_hello_request[] = { HS_HELLO_REQUEST, 0, 0, 0 }; -static const uint8_t g_chg_cipher_spec_pkt[] = { 1 }; -static const char * server_finished = "server finished"; -static const char * client_finished = "client finished"; - -static int do_handshake(SSL *ssl, uint8_t *buf, int read_len); -static int set_key_block(SSL *ssl, int is_write); -static int verify_digest(SSL *ssl, int mode, const uint8_t *buf, int read_len); -static void *crypt_new(SSL *ssl, uint8_t *key, uint8_t *iv, int is_decrypt); -static int send_raw_packet(SSL *ssl, uint8_t protocol); - -/** - * The server will pick the cipher based on the order that the order that the - * ciphers are listed. This order is defined at compile time. - */ -#ifdef CONFIG_SSL_SKELETON_MODE -const uint8_t ssl_prot_prefs[NUM_PROTOCOLS] = -{ SSL_RC4_128_SHA }; -#else -static void session_free(SSL_SESSION *ssl_sessions[], int sess_index); - -const uint8_t ssl_prot_prefs[NUM_PROTOCOLS] = -#ifdef CONFIG_SSL_PROT_LOW /* low security, fast speed */ -{ SSL_RC4_128_SHA, SSL_AES128_SHA, SSL_AES256_SHA, SSL_RC4_128_MD5 }; -#elif CONFIG_SSL_PROT_MEDIUM /* medium security, medium speed */ -{ SSL_AES128_SHA, SSL_AES256_SHA, SSL_RC4_128_SHA, SSL_RC4_128_MD5 }; -#else /* CONFIG_SSL_PROT_HIGH */ /* high security, low speed */ -{ SSL_AES256_SHA, SSL_AES128_SHA, SSL_RC4_128_SHA, SSL_RC4_128_MD5 }; -#endif -#endif /* CONFIG_SSL_SKELETON_MODE */ - -/** - * The cipher map containing all the essentials for each cipher. - */ -#ifdef CONFIG_SSL_SKELETON_MODE -static const cipher_info_t cipher_info[NUM_PROTOCOLS] = -{ - { /* RC4-SHA */ - SSL_RC4_128_SHA, /* RC4-SHA */ - 16, /* key size */ - 0, /* iv size */ - 2*(SHA1_SIZE+16), /* key block size */ - 0, /* no padding */ - SHA1_SIZE, /* digest size */ - hmac_sha1, /* hmac algorithm */ - (crypt_func)RC4_crypt, /* encrypt */ - (crypt_func)RC4_crypt /* decrypt */ - }, -}; -#else -static const cipher_info_t cipher_info[NUM_PROTOCOLS] = -{ - { /* AES128-SHA */ - SSL_AES128_SHA, /* AES128-SHA */ - 16, /* key size */ - 16, /* iv size */ - 2*(SHA1_SIZE+16+16), /* key block size */ - 16, /* block padding size */ - SHA1_SIZE, /* digest size */ - hmac_sha1, /* hmac algorithm */ - (crypt_func)AES_cbc_encrypt, /* encrypt */ - (crypt_func)AES_cbc_decrypt /* decrypt */ - }, - { /* AES256-SHA */ - SSL_AES256_SHA, /* AES256-SHA */ - 32, /* key size */ - 16, /* iv size */ - 2*(SHA1_SIZE+32+16), /* key block size */ - 16, /* block padding size */ - SHA1_SIZE, /* digest size */ - hmac_sha1, /* hmac algorithm */ - (crypt_func)AES_cbc_encrypt, /* encrypt */ - (crypt_func)AES_cbc_decrypt /* decrypt */ - }, - { /* RC4-SHA */ - SSL_RC4_128_SHA, /* RC4-SHA */ - 16, /* key size */ - 0, /* iv size */ - 2*(SHA1_SIZE+16), /* key block size */ - 0, /* no padding */ - SHA1_SIZE, /* digest size */ - hmac_sha1, /* hmac algorithm */ - (crypt_func)RC4_crypt, /* encrypt */ - (crypt_func)RC4_crypt /* decrypt */ - }, - /* - * This protocol is from SSLv2 days and is unlikely to be used - but was - * useful for testing different possible digest algorithms. - */ - { /* RC4-MD5 */ - SSL_RC4_128_MD5, /* RC4-MD5 */ - 16, /* key size */ - 0, /* iv size */ - 2*(MD5_SIZE+16), /* key block size */ - 0, /* no padding */ - MD5_SIZE, /* digest size */ - hmac_md5, /* hmac algorithm */ - (crypt_func)RC4_crypt, /* encrypt */ - (crypt_func)RC4_crypt /* decrypt */ - }, -}; -#endif - -static void prf(const uint8_t *sec, int sec_len, uint8_t *seed, int seed_len, - uint8_t *out, int olen); -static const cipher_info_t *get_cipher_info(uint8_t cipher); -static void increment_read_sequence(SSL *ssl); -static void increment_write_sequence(SSL *ssl); -static void add_hmac_digest(SSL *ssl, int snd, uint8_t *hmac_header, - const uint8_t *buf, int buf_len, uint8_t *hmac_buf); - -/* win32 VC6.0 doesn't have variadic macros */ -#if defined(WIN32) && !defined(CONFIG_SSL_FULL_MODE) -void DISPLAY_BYTES(SSL *ssl, const char *format, - const uint8_t *data, int size, ...) {} -#endif - -/** - * Establish a new client/server context. - */ -EXP_FUNC SSL_CTX *STDCALL ssl_ctx_new(uint32_t options, int num_sessions) -{ - SSL_CTX *ssl_ctx = (SSL_CTX *)calloc(1, sizeof (SSL_CTX)); - ssl_ctx->options = options; - - if (load_key_certs(ssl_ctx) < 0) - { - free(ssl_ctx); /* can't load our key/certificate pair, so die */ - return NULL; - } - -#ifndef CONFIG_SSL_SKELETON_MODE - ssl_ctx->num_sessions = num_sessions; -#endif - - SSL_CTX_MUTEX_INIT(ssl_ctx->mutex); - -#ifndef CONFIG_SSL_SKELETON_MODE - if (num_sessions) - { - ssl_ctx->ssl_sessions = (SSL_SESSION **) - calloc(1, num_sessions*sizeof(SSL_SESSION *)); - } -#endif - - return ssl_ctx; -} - -/* - * Remove a client/server context. - */ -EXP_FUNC void STDCALL ssl_ctx_free(SSL_CTX *ssl_ctx) -{ - SSL *ssl; - int i; - - if (ssl_ctx == NULL) - return; - - ssl = ssl_ctx->head; - - /* clear out all the ssl entries */ - while (ssl) - { - SSL *next = ssl->next; - ssl_free(ssl); - ssl = next; - } - -#ifndef CONFIG_SSL_SKELETON_MODE - /* clear out all the sessions */ - for (i = 0; i < ssl_ctx->num_sessions; i++) - session_free(ssl_ctx->ssl_sessions, i); - - free(ssl_ctx->ssl_sessions); -#endif - - i = 0; - while (i < CONFIG_SSL_MAX_CERTS && ssl_ctx->certs[i].buf) - { - free(ssl_ctx->certs[i].buf); - ssl_ctx->certs[i++].buf = NULL; - } - -#ifdef CONFIG_SSL_CERT_VERIFICATION - remove_ca_certs(ssl_ctx->ca_cert_ctx); -#endif - ssl_ctx->chain_length = 0; - SSL_CTX_MUTEX_DESTROY(ssl_ctx->mutex); - RSA_free(ssl_ctx->rsa_ctx); - RNG_terminate(); - free(ssl_ctx); -} - -/* - * Free any used resources used by this connection. - */ -EXP_FUNC void STDCALL ssl_free(SSL *ssl) -{ - SSL_CTX *ssl_ctx; - - if (ssl == NULL) /* just ignore null pointers */ - return; - - /* only notify if we weren't notified first */ - /* spec says we must notify when we are dying */ - if (!IS_SET_SSL_FLAG(SSL_SENT_CLOSE_NOTIFY)) - send_alert(ssl, SSL_ALERT_CLOSE_NOTIFY); - - ssl_ctx = ssl->ssl_ctx; - - SSL_CTX_LOCK(ssl_ctx->mutex); - - /* adjust the server SSL list */ - if (ssl->prev) - ssl->prev->next = ssl->next; - else - ssl_ctx->head = ssl->next; - - if (ssl->next) - ssl->next->prev = ssl->prev; - else - ssl_ctx->tail = ssl->prev; - - SSL_CTX_UNLOCK(ssl_ctx->mutex); - - /* may already be free - but be sure */ - free(ssl->encrypt_ctx); - free(ssl->decrypt_ctx); - disposable_free(ssl); -#ifdef CONFIG_SSL_CERT_VERIFICATION - x509_free(ssl->x509_ctx); -#endif - - free(ssl); -} - -EXP_FUNC int STDCALL ssl_handshake(SSL_CTX* ctx); - -/* - * Read the SSL connection and send any alerts for various errors. - */ -EXP_FUNC int STDCALL ssl_read(SSL *ssl, uint8_t **in_data) -{ - int ret = basic_read(ssl, in_data); - - /* check for return code so we can send an alert */ - if (ret < SSL_OK && ret != SSL_CLOSE_NOTIFY) - { - if (ret != SSL_ERROR_CONN_LOST) - { - send_alert(ssl, ret); -#ifndef CONFIG_SSL_SKELETON_MODE - /* something nasty happened, so get rid of this session */ - kill_ssl_session(ssl->ssl_ctx->ssl_sessions, ssl); -#endif - } - } - - return ret; -} - -/* - * Write application data to the client - */ -EXP_FUNC int STDCALL ssl_write(SSL *ssl, const uint8_t *out_data, int out_len) -{ - int n = out_len, nw, i, tot = 0; - - /* maximum size of a TLS packet is around 16kB, so fragment */ - do - { - nw = n; - - if (nw > RT_MAX_PLAIN_LENGTH) /* fragment if necessary */ - nw = RT_MAX_PLAIN_LENGTH; - - if ((i = send_packet(ssl, PT_APP_PROTOCOL_DATA, - &out_data[tot], nw)) <= 0) - { - out_len = i; /* an error */ - break; - } - - tot += i; - n -= i; - } while (n > 0); - - return out_len; -} - -/** - * Add a certificate to the certificate chain. - */ -int add_cert(SSL_CTX *ssl_ctx, const uint8_t *buf, int len) -{ - int ret = SSL_ERROR_NO_CERT_DEFINED, i = 0; - SSL_CERT *ssl_cert; - X509_CTX *cert = NULL; - int offset; - - while (ssl_ctx->certs[i].buf && i < CONFIG_SSL_MAX_CERTS) - i++; - - if (i == CONFIG_SSL_MAX_CERTS) /* too many certs */ - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: maximum number of certs added (%d) - change of " - "compile-time configuration required\n", - CONFIG_SSL_MAX_CERTS); -#endif - goto error; - } - - if ((ret = x509_new(buf, &offset, &cert))) - goto error; - -#if defined (CONFIG_SSL_FULL_MODE) - if (ssl_ctx->options & SSL_DISPLAY_CERTS) - x509_print(cert, NULL); -#endif - - ssl_cert = &ssl_ctx->certs[i]; - ssl_cert->size = len; - ssl_cert->buf = (uint8_t *)malloc(len); - memcpy(ssl_cert->buf, buf, len); - ssl_ctx->chain_length++; - len -= offset; - ret = SSL_OK; /* ok so far */ - - /* recurse? */ - if (len > 0) - { - ret = add_cert(ssl_ctx, &buf[offset], len); - } - -error: - x509_free(cert); /* don't need anymore */ - return ret; -} - -#ifdef CONFIG_SSL_CERT_VERIFICATION -/** - * Add a certificate authority. - */ -int add_cert_auth(SSL_CTX *ssl_ctx, const uint8_t *buf, int len) -{ - int ret = SSL_OK; /* ignore errors for now */ - int i = 0; - CA_CERT_CTX *ca_cert_ctx; - - if (ssl_ctx->ca_cert_ctx == NULL) - ssl_ctx->ca_cert_ctx = (CA_CERT_CTX *)calloc(1, sizeof(CA_CERT_CTX)); - - ca_cert_ctx = ssl_ctx->ca_cert_ctx; - - while (i < CONFIG_X509_MAX_CA_CERTS && ca_cert_ctx->cert[i]) - i++; - - while (len > 0) - { - int offset; - if (i >= CONFIG_X509_MAX_CA_CERTS) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: maximum number of CA certs added (%d) - change of " - "compile-time configuration required\n", - CONFIG_X509_MAX_CA_CERTS); -#endif - break; - } - - - /* ignore the return code */ - if (x509_new(buf, &offset, &ca_cert_ctx->cert[i]) == X509_OK) - { -#if defined (CONFIG_SSL_FULL_MODE) - if (ssl_ctx->options & SSL_DISPLAY_CERTS) - x509_print(ca_cert_ctx->cert[i], NULL); -#endif - } - - i++; - len -= offset; - } - - return ret; -} - -/* - * Retrieve an X.509 distinguished name component - */ -EXP_FUNC const char * STDCALL ssl_get_cert_dn(const SSL *ssl, int component) -{ - if (ssl->x509_ctx == NULL) - return NULL; - - switch (component) - { - case SSL_X509_CERT_COMMON_NAME: - return ssl->x509_ctx->cert_dn[X509_COMMON_NAME]; - - case SSL_X509_CERT_ORGANIZATION: - return ssl->x509_ctx->cert_dn[X509_ORGANIZATION]; - - case SSL_X509_CERT_ORGANIZATIONAL_NAME: - return ssl->x509_ctx->cert_dn[X509_ORGANIZATIONAL_UNIT]; - - case SSL_X509_CA_CERT_COMMON_NAME: - return ssl->x509_ctx->ca_cert_dn[X509_COMMON_NAME]; - - case SSL_X509_CA_CERT_ORGANIZATION: - return ssl->x509_ctx->ca_cert_dn[X509_ORGANIZATION]; - - case SSL_X509_CA_CERT_ORGANIZATIONAL_NAME: - return ssl->x509_ctx->ca_cert_dn[X509_ORGANIZATIONAL_UNIT]; - - default: - return NULL; - } -} - -/* - * Retrieve a "Subject Alternative Name" from a v3 certificate - */ -EXP_FUNC const char * STDCALL ssl_get_cert_subject_alt_dnsname(const SSL *ssl, - int dnsindex) -{ - int i; - - if (ssl->x509_ctx == NULL || ssl->x509_ctx->subject_alt_dnsnames == NULL) - return NULL; - - for (i = 0; i < dnsindex; ++i) - { - if (ssl->x509_ctx->subject_alt_dnsnames[i] == NULL) - return NULL; - } - - return ssl->x509_ctx->subject_alt_dnsnames[dnsindex]; -} - -#endif /* CONFIG_SSL_CERT_VERIFICATION */ - -/* - * Find an ssl object based on the client's file descriptor. - */ -EXP_FUNC SSL * STDCALL ssl_find(SSL_CTX *ssl_ctx, int client_fd) -{ - SSL *ssl; - - SSL_CTX_LOCK(ssl_ctx->mutex); - ssl = ssl_ctx->head; - - /* search through all the ssl entries */ - while (ssl) - { - if (ssl->client_fd == client_fd) - { - SSL_CTX_UNLOCK(ssl_ctx->mutex); - return ssl; - } - - ssl = ssl->next; - } - - SSL_CTX_UNLOCK(ssl_ctx->mutex); - return NULL; -} - -/* - * Force the client to perform its handshake again. - */ -EXP_FUNC int STDCALL ssl_renegotiate(SSL *ssl) -{ - int ret = SSL_OK; - - disposable_new(ssl); -#ifdef CONFIG_SSL_ENABLE_CLIENT - if (IS_SET_SSL_FLAG(SSL_IS_CLIENT)) - { - ret = do_client_connect(ssl); - } - else -#endif - { - send_packet(ssl, PT_HANDSHAKE_PROTOCOL, - g_hello_request, sizeof(g_hello_request)); - SET_SSL_FLAG(SSL_NEED_RECORD); - } - - return ret; -} - -/** - * @brief Get what we need for key info. - * @param cipher [in] The cipher information we are after - * @param key_size [out] The key size for the cipher - * @param iv_size [out] The iv size for the cipher - * @return The amount of key information we need. - */ -static const cipher_info_t *get_cipher_info(uint8_t cipher) -{ - int i; - - for (i = 0; i < NUM_PROTOCOLS; i++) - { - if (cipher_info[i].cipher == cipher) - { - return &cipher_info[i]; - } - } - - return NULL; /* error */ -} - -/* - * Get a new ssl context for a new connection. - */ -SSL *ssl_new(SSL_CTX *ssl_ctx, int client_fd) -{ - SSL *ssl = (SSL *)calloc(1, sizeof(SSL)); - ssl->ssl_ctx = ssl_ctx; - ssl->need_bytes = SSL_RECORD_SIZE; /* need a record */ - ssl->client_fd = client_fd; - ssl->flag = SSL_NEED_RECORD; - ssl->bm_data = ssl->bm_all_data+BM_RECORD_OFFSET; /* space at the start */ - ssl->hs_status = SSL_NOT_OK; /* not connected */ -#ifdef CONFIG_ENABLE_VERIFICATION - ssl->ca_cert_ctx = ssl_ctx->ca_cert_ctx; -#endif - disposable_new(ssl); - - /* a bit hacky but saves a few bytes of memory */ - ssl->flag |= ssl_ctx->options; - SSL_CTX_LOCK(ssl_ctx->mutex); - - if (ssl_ctx->head == NULL) - { - ssl_ctx->head = ssl; - ssl_ctx->tail = ssl; - } - else - { - ssl->prev = ssl_ctx->tail; - ssl_ctx->tail->next = ssl; - ssl_ctx->tail = ssl; - } - - SSL_CTX_UNLOCK(ssl_ctx->mutex); - return ssl; -} - -/* - * Add a private key to a context. - */ -int add_private_key(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj) -{ - int ret = SSL_OK; - - /* get the private key details */ - if (asn1_get_private_key(ssl_obj->buf, ssl_obj->len, &ssl_ctx->rsa_ctx)) - { - ret = SSL_ERROR_INVALID_KEY; - goto error; - } - -error: - return ret; -} - -/** - * Increment the read sequence number (as a 64 bit endian indepenent #) - */ -static void increment_read_sequence(SSL *ssl) -{ - int i; - - for (i = 7; i >= 0; i--) - { - if (++ssl->read_sequence[i]) - break; - } -} - -/** - * Increment the read sequence number (as a 64 bit endian indepenent #) - */ -static void increment_write_sequence(SSL *ssl) -{ - int i; - - for (i = 7; i >= 0; i--) - { - if (++ssl->write_sequence[i]) - break; - } -} - -/** - * Work out the HMAC digest in a packet. - */ -static void add_hmac_digest(SSL *ssl, int mode, uint8_t *hmac_header, - const uint8_t *buf, int buf_len, uint8_t *hmac_buf) -{ - int hmac_len = buf_len + 8 + SSL_RECORD_SIZE; - uint8_t *t_buf = (uint8_t *)alloca(hmac_len+10); - - memcpy(t_buf, (mode == SSL_SERVER_WRITE || mode == SSL_CLIENT_WRITE) ? - ssl->write_sequence : ssl->read_sequence, 8); - memcpy(&t_buf[8], hmac_header, SSL_RECORD_SIZE); - memcpy(&t_buf[8+SSL_RECORD_SIZE], buf, buf_len); - - ssl->cipher_info->hmac(t_buf, hmac_len, - (mode == SSL_SERVER_WRITE || mode == SSL_CLIENT_READ) ? - ssl->server_mac : ssl->client_mac, - ssl->cipher_info->digest_size, hmac_buf); - -#if 0 - print_blob("record", ssl->hmac_tx, SSL_RECORD_SIZE); - print_blob("buf", buf, buf_len); - if (mode == SSL_SERVER_WRITE || mode == SSL_CLIENT_WRITE) - { - print_blob("write seq", ssl->write_sequence, 8); - } - else - { - print_blob("read seq", ssl->read_sequence, 8); - } - - if (mode == SSL_SERVER_WRITE || mode == SSL_CLIENT_READ) - { - print_blob("server mac", - ssl->server_mac, ssl->cipher_info->digest_size); - } - else - { - print_blob("client mac", - ssl->client_mac, ssl->cipher_info->digest_size); - } - print_blob("hmac", hmac_buf, SHA1_SIZE); -#endif -} - -/** - * Verify that the digest of a packet is correct. - */ -static int verify_digest(SSL *ssl, int mode, const uint8_t *buf, int read_len) -{ - uint8_t hmac_buf[SHA1_SIZE]; - int hmac_offset; - - if (ssl->cipher_info->padding_size) - { - int last_blk_size = buf[read_len-1], i; - hmac_offset = read_len-last_blk_size-ssl->cipher_info->digest_size-1; - - /* guard against a timing attack - make sure we do the digest */ - if (hmac_offset < 0) - { - hmac_offset = 0; - } - else - { - /* already looked at last byte */ - for (i = 1; i < last_blk_size; i++) - { - if (buf[read_len-i] != last_blk_size) - { - hmac_offset = 0; - break; - } - } - } - } - else /* stream cipher */ - { - hmac_offset = read_len - ssl->cipher_info->digest_size; - - if (hmac_offset < 0) - { - hmac_offset = 0; - } - } - - /* sanity check the offset */ - ssl->hmac_header[3] = hmac_offset >> 8; /* insert size */ - ssl->hmac_header[4] = hmac_offset & 0xff; - add_hmac_digest(ssl, mode, ssl->hmac_header, buf, hmac_offset, hmac_buf); - - if (memcmp(hmac_buf, &buf[hmac_offset], ssl->cipher_info->digest_size)) - { - return SSL_ERROR_INVALID_HMAC; - } - - return hmac_offset; -} - -/** - * Add a packet to the end of our sent and received packets, so that we may use - * it to calculate the hash at the end. - */ -void add_packet(SSL *ssl, const uint8_t *pkt, int len) -{ - MD5_Update(&ssl->dc->md5_ctx, pkt, len); - SHA1_Update(&ssl->dc->sha1_ctx, pkt, len); -} - -/** - * Work out the MD5 PRF. - */ -static void p_hash_md5(const uint8_t *sec, int sec_len, - uint8_t *seed, int seed_len, uint8_t *out, int olen) -{ - uint8_t a1[128]; - - /* A(1) */ - hmac_md5(seed, seed_len, sec, sec_len, a1); - memcpy(&a1[MD5_SIZE], seed, seed_len); - hmac_md5(a1, MD5_SIZE+seed_len, sec, sec_len, out); - - while (olen > MD5_SIZE) - { - uint8_t a2[MD5_SIZE]; - out += MD5_SIZE; - olen -= MD5_SIZE; - - /* A(N) */ - hmac_md5(a1, MD5_SIZE, sec, sec_len, a2); - memcpy(a1, a2, MD5_SIZE); - - /* work out the actual hash */ - hmac_md5(a1, MD5_SIZE+seed_len, sec, sec_len, out); - } -} - -/** - * Work out the SHA1 PRF. - */ -static void p_hash_sha1(const uint8_t *sec, int sec_len, - uint8_t *seed, int seed_len, uint8_t *out, int olen) -{ - uint8_t a1[128]; - - /* A(1) */ - hmac_sha1(seed, seed_len, sec, sec_len, a1); - memcpy(&a1[SHA1_SIZE], seed, seed_len); - hmac_sha1(a1, SHA1_SIZE+seed_len, sec, sec_len, out); - - while (olen > SHA1_SIZE) - { - uint8_t a2[SHA1_SIZE]; - out += SHA1_SIZE; - olen -= SHA1_SIZE; - - /* A(N) */ - hmac_sha1(a1, SHA1_SIZE, sec, sec_len, a2); - memcpy(a1, a2, SHA1_SIZE); - - /* work out the actual hash */ - hmac_sha1(a1, SHA1_SIZE+seed_len, sec, sec_len, out); - } -} - -/** - * Work out the PRF. - */ -static void prf(const uint8_t *sec, int sec_len, uint8_t *seed, int seed_len, - uint8_t *out, int olen) -{ - int len, i; - const uint8_t *S1, *S2; - uint8_t xbuf[256]; /* needs to be > the amount of key data */ - uint8_t ybuf[256]; /* needs to be > the amount of key data */ - - len = sec_len/2; - S1 = sec; - S2 = &sec[len]; - len += (sec_len & 1); /* add for odd, make longer */ - - p_hash_md5(S1, len, seed, seed_len, xbuf, olen); - p_hash_sha1(S2, len, seed, seed_len, ybuf, olen); - - for (i = 0; i < olen; i++) - out[i] = xbuf[i] ^ ybuf[i]; -} - -/** - * Generate a master secret based on the client/server random data and the - * premaster secret. - */ -void generate_master_secret(SSL *ssl, const uint8_t *premaster_secret) -{ - uint8_t buf[128]; /* needs to be > 13+32+32 in size */ - strcpy((char *)buf, "master secret"); - memcpy(&buf[13], ssl->dc->client_random, SSL_RANDOM_SIZE); - memcpy(&buf[45], ssl->dc->server_random, SSL_RANDOM_SIZE); - prf(premaster_secret, SSL_SECRET_SIZE, buf, 77, ssl->dc->master_secret, - SSL_SECRET_SIZE); -} - -/** - * Generate a 'random' blob of data used for the generation of keys. - */ -static void generate_key_block(uint8_t *client_random, uint8_t *server_random, - uint8_t *master_secret, uint8_t *key_block, int key_block_size) -{ - uint8_t buf[128]; - strcpy((char *)buf, "key expansion"); - memcpy(&buf[13], server_random, SSL_RANDOM_SIZE); - memcpy(&buf[45], client_random, SSL_RANDOM_SIZE); - prf(master_secret, SSL_SECRET_SIZE, buf, 77, key_block, key_block_size); -} - -/** - * Calculate the digest used in the finished message. This function also - * doubles up as a certificate verify function. - */ -void finished_digest(SSL *ssl, const char *label, uint8_t *digest) -{ - uint8_t mac_buf[128]; - uint8_t *q = mac_buf; - MD5_CTX md5_ctx = ssl->dc->md5_ctx; - SHA1_CTX sha1_ctx = ssl->dc->sha1_ctx; - - if (label) - { - strcpy((char *)q, label); - q += strlen(label); - } - - MD5_Final(q, &md5_ctx); - q += MD5_SIZE; - - SHA1_Final(q, &sha1_ctx); - q += SHA1_SIZE; - - if (label) - { - prf(ssl->dc->master_secret, SSL_SECRET_SIZE, mac_buf, (int)(q-mac_buf), - digest, SSL_FINISHED_HASH_SIZE); - } - else /* for use in a certificate verify */ - { - memcpy(digest, mac_buf, MD5_SIZE + SHA1_SIZE); - } - -#if 0 - printf("label: %s\n", label); - print_blob("master secret", ssl->dc->master_secret, 48); - print_blob("mac_buf", mac_buf, q-mac_buf); - print_blob("finished digest", digest, SSL_FINISHED_HASH_SIZE); -#endif -} - -/** - * Retrieve (and initialise) the context of a cipher. - */ -static void *crypt_new(SSL *ssl, uint8_t *key, uint8_t *iv, int is_decrypt) -{ - switch (ssl->cipher) - { -#ifndef CONFIG_SSL_SKELETON_MODE - case SSL_AES128_SHA: - { - AES_CTX *aes_ctx = (AES_CTX *)malloc(sizeof(AES_CTX)); - AES_set_key(aes_ctx, key, iv, AES_MODE_128); - - if (is_decrypt) - { - AES_convert_key(aes_ctx); - } - - return (void *)aes_ctx; - } - - case SSL_AES256_SHA: - { - AES_CTX *aes_ctx = (AES_CTX *)malloc(sizeof(AES_CTX)); - AES_set_key(aes_ctx, key, iv, AES_MODE_256); - - if (is_decrypt) - { - AES_convert_key(aes_ctx); - } - - return (void *)aes_ctx; - } - - case SSL_RC4_128_MD5: -#endif - case SSL_RC4_128_SHA: - { - RC4_CTX *rc4_ctx = (RC4_CTX *)malloc(sizeof(RC4_CTX)); - RC4_setup(rc4_ctx, key, 16); - return (void *)rc4_ctx; - } - } - - return NULL; /* its all gone wrong */ -} - -/** - * Send a packet over the socket. - */ -static int send_raw_packet(SSL *ssl, uint8_t protocol) -{ - uint8_t *rec_buf = ssl->bm_all_data; - int pkt_size = SSL_RECORD_SIZE+ssl->bm_index; - int sent = 0; - int ret = SSL_OK; - - rec_buf[0] = protocol; - rec_buf[1] = 0x03; /* version = 3.1 or higher */ - rec_buf[2] = ssl->version & 0x0f; - rec_buf[3] = ssl->bm_index >> 8; - rec_buf[4] = ssl->bm_index & 0xff; - - DISPLAY_BYTES(ssl, "sending %d bytes", ssl->bm_all_data, - pkt_size, pkt_size); - - while (sent < pkt_size) - { - ret = SOCKET_WRITE(ssl->client_fd, - &ssl->bm_all_data[sent], pkt_size-sent); - - if (ret >= 0) - sent += ret; - else - { - -#ifdef WIN32 - if (GetLastError() != WSAEWOULDBLOCK) -#else - if (errno != EAGAIN && errno != EWOULDBLOCK) -#endif - return SSL_ERROR_CONN_LOST; - } - - /* keep going until the write buffer has some space */ - if (sent != pkt_size) - { - fd_set wfds; - FD_ZERO(&wfds); - FD_SET(ssl->client_fd, &wfds); - - /* block and wait for it */ - if (select(ssl->client_fd + 1, NULL, &wfds, NULL, NULL) < 0) - return SSL_ERROR_CONN_LOST; - } - } - - SET_SSL_FLAG(SSL_NEED_RECORD); /* reset for next time */ - ssl->bm_index = 0; - - if (protocol != PT_APP_PROTOCOL_DATA) - { - /* always return SSL_OK during handshake */ - ret = SSL_OK; - } - - return ret; -} - -/** - * Send an encrypted packet with padding bytes if necessary. - */ -int send_packet(SSL *ssl, uint8_t protocol, const uint8_t *in, int length) -{ - int ret, msg_length = 0; - - /* if our state is bad, don't bother */ - if (ssl->hs_status == SSL_ERROR_DEAD) - return SSL_ERROR_CONN_LOST; - - if (in) /* has the buffer already been initialised? */ - { - memcpy(ssl->bm_data, in, length); - } - - msg_length += length; - - if (IS_SET_SSL_FLAG(SSL_TX_ENCRYPTED)) - { - int mode = IS_SET_SSL_FLAG(SSL_IS_CLIENT) ? - SSL_CLIENT_WRITE : SSL_SERVER_WRITE; - uint8_t hmac_header[SSL_RECORD_SIZE] = - { - protocol, - 0x03, /* version = 3.1 or higher */ - ssl->version & 0x0f, - msg_length >> 8, - msg_length & 0xff - }; - - if (protocol == PT_HANDSHAKE_PROTOCOL) - { - DISPLAY_STATE(ssl, 1, ssl->bm_data[0], 0); - - if (ssl->bm_data[0] != HS_HELLO_REQUEST) - { - add_packet(ssl, ssl->bm_data, msg_length); - } - } - - /* add the packet digest */ - add_hmac_digest(ssl, mode, hmac_header, ssl->bm_data, msg_length, - &ssl->bm_data[msg_length]); - msg_length += ssl->cipher_info->digest_size; - - /* add padding? */ - if (ssl->cipher_info->padding_size) - { - int last_blk_size = msg_length%ssl->cipher_info->padding_size; - int pad_bytes = ssl->cipher_info->padding_size - last_blk_size; - - /* ensure we always have at least 1 padding byte */ - if (pad_bytes == 0) - pad_bytes += ssl->cipher_info->padding_size; - - memset(&ssl->bm_data[msg_length], pad_bytes-1, pad_bytes); - msg_length += pad_bytes; - } - - DISPLAY_BYTES(ssl, "unencrypted write", ssl->bm_data, msg_length); - increment_write_sequence(ssl); - - /* add the explicit IV for TLS1.1 */ - if (ssl->version >= SSL_PROTOCOL_VERSION1_1 && - ssl->cipher_info->iv_size) - - { - uint8_t iv_size = ssl->cipher_info->iv_size; - uint8_t *t_buf = alloca(msg_length + iv_size); - memcpy(t_buf + iv_size, ssl->bm_data, msg_length); - get_random(iv_size, t_buf); - msg_length += iv_size; - memcpy(ssl->bm_data, t_buf, msg_length); - } - - /* now encrypt the packet */ - ssl->cipher_info->encrypt(ssl->encrypt_ctx, ssl->bm_data, - ssl->bm_data, msg_length); - } - else if (protocol == PT_HANDSHAKE_PROTOCOL) - { - DISPLAY_STATE(ssl, 1, ssl->bm_data[0], 0); - - if (ssl->bm_data[0] != HS_HELLO_REQUEST) - { - add_packet(ssl, ssl->bm_data, length); - } - } - - ssl->bm_index = msg_length; - if ((ret = send_raw_packet(ssl, protocol)) <= 0) - return ret; - - return length; /* just return what we wanted to send */ -} - -/** - * Work out the cipher keys we are going to use for this session based on the - * master secret. - */ -static int set_key_block(SSL *ssl, int is_write) -{ - const cipher_info_t *ciph_info = get_cipher_info(ssl->cipher); - uint8_t *q; - uint8_t client_key[32], server_key[32]; /* big enough for AES256 */ - uint8_t client_iv[16], server_iv[16]; /* big enough for AES128/256 */ - int is_client = IS_SET_SSL_FLAG(SSL_IS_CLIENT); - - if (ciph_info == NULL) - return -1; - - /* only do once in a handshake */ - if (ssl->dc->key_block == NULL) - { - ssl->dc->key_block = (uint8_t *)malloc(ciph_info->key_block_size); - -#if 0 - print_blob("client", ssl->dc->client_random, 32); - print_blob("server", ssl->dc->server_random, 32); - print_blob("master", ssl->dc->master_secret, SSL_SECRET_SIZE); -#endif - generate_key_block(ssl->dc->client_random, ssl->dc->server_random, - ssl->dc->master_secret, ssl->dc->key_block, - ciph_info->key_block_size); -#if 0 - print_blob("keyblock", ssl->key_block, ciph_info->key_block_size); -#endif - } - - q = ssl->dc->key_block; - - if ((is_client && is_write) || (!is_client && !is_write)) - { - memcpy(ssl->client_mac, q, ciph_info->digest_size); - } - - q += ciph_info->digest_size; - - if ((!is_client && is_write) || (is_client && !is_write)) - { - memcpy(ssl->server_mac, q, ciph_info->digest_size); - } - - q += ciph_info->digest_size; - memcpy(client_key, q, ciph_info->key_size); - q += ciph_info->key_size; - memcpy(server_key, q, ciph_info->key_size); - q += ciph_info->key_size; - -#ifndef CONFIG_SSL_SKELETON_MODE - if (ciph_info->iv_size) /* RC4 has no IV, AES does */ - { - memcpy(client_iv, q, ciph_info->iv_size); - q += ciph_info->iv_size; - memcpy(server_iv, q, ciph_info->iv_size); - q += ciph_info->iv_size; - } -#endif - - free(is_write ? ssl->encrypt_ctx : ssl->decrypt_ctx); - - /* now initialise the ciphers */ - if (is_client) - { - finished_digest(ssl, server_finished, ssl->dc->final_finish_mac); - - if (is_write) - ssl->encrypt_ctx = crypt_new(ssl, client_key, client_iv, 0); - else - ssl->decrypt_ctx = crypt_new(ssl, server_key, server_iv, 1); - } - else - { - finished_digest(ssl, client_finished, ssl->dc->final_finish_mac); - - if (is_write) - ssl->encrypt_ctx = crypt_new(ssl, server_key, server_iv, 0); - else - ssl->decrypt_ctx = crypt_new(ssl, client_key, client_iv, 1); - } - - ssl->cipher_info = ciph_info; - return 0; -} - -/** - * Read the SSL connection. - */ -int basic_read(SSL *ssl, uint8_t **in_data) -{ - int ret = SSL_OK; - int read_len, is_client = IS_SET_SSL_FLAG(SSL_IS_CLIENT); - uint8_t *buf = ssl->bm_data; - - read_len = SOCKET_READ(ssl->client_fd, &buf[ssl->bm_read_index], - ssl->need_bytes-ssl->got_bytes); - - if (read_len < 0) - { -#ifdef WIN32 - if (GetLastError() == WSAEWOULDBLOCK) -#else - if (errno == EAGAIN || errno == EWOULDBLOCK) -#endif - return 0; - } - - /* connection has gone, so die */ - if (read_len <= 0) - { - ret = SSL_ERROR_CONN_LOST; - ssl->hs_status = SSL_ERROR_DEAD; /* make sure it stays dead */ - goto error; - } - - DISPLAY_BYTES(ssl, "received %d bytes", - &ssl->bm_data[ssl->bm_read_index], read_len, read_len); - - ssl->got_bytes += read_len; - ssl->bm_read_index += read_len; - - /* haven't quite got what we want, so try again later */ - if (ssl->got_bytes < ssl->need_bytes) - return SSL_OK; - - read_len = ssl->got_bytes; - ssl->got_bytes = 0; - - if (IS_SET_SSL_FLAG(SSL_NEED_RECORD)) - { - /* check for sslv2 "client hello" */ - if (buf[0] & 0x80 && buf[2] == 1) - { -#ifdef CONFIG_SSL_ENABLE_V23_HANDSHAKE - uint8_t version = (buf[3] << 4) + buf[4]; - DISPLAY_BYTES(ssl, "ssl2 record", buf, 5); - - /* should be v3.1 (TLSv1) or better */ - ssl->version = ssl->client_version = version; - - if (version > SSL_PROTOCOL_VERSION_MAX) - { - /* use client's version */ - ssl->version = SSL_PROTOCOL_VERSION_MAX; - } - else if (version < SSL_PROTOCOL_MIN_VERSION) - { - ret = SSL_ERROR_INVALID_VERSION; - ssl_display_error(ret); - return ret; - } - - add_packet(ssl, &buf[2], 3); - ret = process_sslv23_client_hello(ssl); -#else - printf("Error: no SSLv23 handshaking allowed\n"); TTY_FLUSH(); - ret = SSL_ERROR_NOT_SUPPORTED; -#endif - goto error; /* not an error - just get out of here */ - } - - ssl->need_bytes = (buf[3] << 8) + buf[4]; - - /* do we violate the spec with the message size? */ - if (ssl->need_bytes > RT_MAX_PLAIN_LENGTH+RT_EXTRA-BM_RECORD_OFFSET) - { - ret = SSL_ERROR_INVALID_PROT_MSG; - goto error; - } - - CLR_SSL_FLAG(SSL_NEED_RECORD); - memcpy(ssl->hmac_header, buf, 3); /* store for hmac */ - ssl->record_type = buf[0]; - goto error; /* no error, we're done */ - } - - /* for next time - just do it now in case of an error */ - SET_SSL_FLAG(SSL_NEED_RECORD); - ssl->need_bytes = SSL_RECORD_SIZE; - - /* decrypt if we need to */ - if (IS_SET_SSL_FLAG(SSL_RX_ENCRYPTED)) - { - ssl->cipher_info->decrypt(ssl->decrypt_ctx, buf, buf, read_len); - - if (ssl->version >= SSL_PROTOCOL_VERSION1_1 && - ssl->cipher_info->iv_size) - { - buf += ssl->cipher_info->iv_size; - read_len -= ssl->cipher_info->iv_size; - } - - read_len = verify_digest(ssl, - is_client ? SSL_CLIENT_READ : SSL_SERVER_READ, buf, read_len); - - /* does the hmac work? */ - if (read_len < 0) - { - ret = read_len; - goto error; - } - - DISPLAY_BYTES(ssl, "decrypted", buf, read_len); - increment_read_sequence(ssl); - } - - /* The main part of the SSL packet */ - switch (ssl->record_type) - { - case PT_HANDSHAKE_PROTOCOL: - if (ssl->dc != NULL) - { - ssl->dc->bm_proc_index = 0; - ret = do_handshake(ssl, buf, read_len); - } - else /* no client renegotiation allowed */ - { - ret = SSL_ERROR_NO_CLIENT_RENOG; - goto error; - } - break; - - case PT_CHANGE_CIPHER_SPEC: - if (ssl->next_state != HS_FINISHED) - { - ret = SSL_ERROR_INVALID_HANDSHAKE; - goto error; - } - - /* all encrypted from now on */ - SET_SSL_FLAG(SSL_RX_ENCRYPTED); - if (set_key_block(ssl, 0) < 0) - { - ret = SSL_ERROR_INVALID_HANDSHAKE; - goto error; - } - - memset(ssl->read_sequence, 0, 8); - break; - - case PT_APP_PROTOCOL_DATA: - if (in_data) - { - *in_data = buf; /* point to the work buffer */ - (*in_data)[read_len] = 0; /* null terminate just in case */ - } - - ret = read_len; - break; - - case PT_ALERT_PROTOCOL: - /* return the alert # with alert bit set */ - if(buf[0] == SSL_ALERT_TYPE_WARNING && - buf[1] == SSL_ALERT_CLOSE_NOTIFY) - { - ret = SSL_CLOSE_NOTIFY; - send_alert(ssl, SSL_ALERT_CLOSE_NOTIFY); - SET_SSL_FLAG(SSL_SENT_CLOSE_NOTIFY); - } - else - { - ret = -buf[1]; - DISPLAY_ALERT(ssl, buf[1]); - } - - break; - - default: - ret = SSL_ERROR_INVALID_PROT_MSG; - break; - } - -error: - ssl->bm_read_index = 0; /* reset to go again */ - - if (ret < SSL_OK && in_data)/* if all wrong, then clear this buffer ptr */ - *in_data = NULL; - - return ret; -} - -/** - * Do some basic checking of data and then perform the appropriate handshaking. - */ -static int do_handshake(SSL *ssl, uint8_t *buf, int read_len) -{ - int hs_len = (buf[2]<<8) + buf[3]; - uint8_t handshake_type = buf[0]; - int ret = SSL_OK; - int is_client = IS_SET_SSL_FLAG(SSL_IS_CLIENT); - - /* some integrity checking on the handshake */ - PARANOIA_CHECK(read_len-SSL_HS_HDR_SIZE, hs_len); - - if (handshake_type != ssl->next_state) - { - /* handle a special case on the client */ - if (!is_client || handshake_type != HS_CERT_REQ || - ssl->next_state != HS_SERVER_HELLO_DONE) - { - ret = SSL_ERROR_INVALID_HANDSHAKE; - goto error; - } - } - - hs_len += SSL_HS_HDR_SIZE; /* adjust for when adding packets */ - ssl->bm_index = hs_len; /* store the size and check later */ - DISPLAY_STATE(ssl, 0, handshake_type, 0); - - if (handshake_type != HS_CERT_VERIFY && handshake_type != HS_HELLO_REQUEST) - add_packet(ssl, buf, hs_len); - -#if defined(CONFIG_SSL_ENABLE_CLIENT) - ret = is_client ? - do_clnt_handshake(ssl, handshake_type, buf, hs_len) : - do_svr_handshake(ssl, handshake_type, buf, hs_len); -#else - ret = do_svr_handshake(ssl, handshake_type, buf, hs_len); -#endif - - /* just use recursion to get the rest */ - if (hs_len < read_len && ret == SSL_OK) - ret = do_handshake(ssl, &buf[hs_len], read_len-hs_len); - -error: - return ret; -} - -/** - * Sends the change cipher spec message. We have just read a finished message - * from the client. - */ -int send_change_cipher_spec(SSL *ssl) -{ - int ret = send_packet(ssl, PT_CHANGE_CIPHER_SPEC, - g_chg_cipher_spec_pkt, sizeof(g_chg_cipher_spec_pkt)); - SET_SSL_FLAG(SSL_TX_ENCRYPTED); - - if (ret >= 0 && set_key_block(ssl, 1) < 0) - ret = SSL_ERROR_INVALID_HANDSHAKE; - - memset(ssl->write_sequence, 0, 8); - return ret; -} - -/** - * Send a "finished" message - */ -int send_finished(SSL *ssl) -{ - uint8_t buf[SSL_FINISHED_HASH_SIZE+4] = { - HS_FINISHED, 0, 0, SSL_FINISHED_HASH_SIZE }; - - /* now add the finished digest mac (12 bytes) */ - finished_digest(ssl, - IS_SET_SSL_FLAG(SSL_IS_CLIENT) ? - client_finished : server_finished, &buf[4]); - -#ifndef CONFIG_SSL_SKELETON_MODE - /* store in the session cache */ - if (!IS_SET_SSL_FLAG(SSL_SESSION_RESUME) && ssl->ssl_ctx->num_sessions) - { - memcpy(ssl->session->master_secret, - ssl->dc->master_secret, SSL_SECRET_SIZE); - } -#endif - - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, - buf, SSL_FINISHED_HASH_SIZE+4); -} - -/** - * Send an alert message. - * Return 1 if the alert was an "error". - */ -int send_alert(SSL *ssl, int error_code) -{ - int alert_num = 0; - int is_warning = 0; - uint8_t buf[2]; - - /* Don't bother we're already dead */ - if (ssl->hs_status == SSL_ERROR_DEAD) - { - return SSL_ERROR_CONN_LOST; - } - -#ifdef CONFIG_SSL_FULL_MODE - if (IS_SET_SSL_FLAG(SSL_DISPLAY_STATES)) - ssl_display_error(error_code); -#endif - - switch (error_code) - { - case SSL_ALERT_CLOSE_NOTIFY: - is_warning = 1; - alert_num = SSL_ALERT_CLOSE_NOTIFY; - break; - - case SSL_ERROR_CONN_LOST: /* don't send alert just yet */ - is_warning = 1; - break; - - case SSL_ERROR_INVALID_HANDSHAKE: - case SSL_ERROR_INVALID_PROT_MSG: - alert_num = SSL_ALERT_HANDSHAKE_FAILURE; - break; - - case SSL_ERROR_INVALID_HMAC: - case SSL_ERROR_FINISHED_INVALID: - alert_num = SSL_ALERT_BAD_RECORD_MAC; - break; - - case SSL_ERROR_INVALID_VERSION: - alert_num = SSL_ALERT_INVALID_VERSION; - break; - - case SSL_ERROR_INVALID_SESSION: - case SSL_ERROR_NO_CIPHER: - case SSL_ERROR_INVALID_KEY: - alert_num = SSL_ALERT_ILLEGAL_PARAMETER; - break; - - case SSL_ERROR_BAD_CERTIFICATE: - alert_num = SSL_ALERT_BAD_CERTIFICATE; - break; - - case SSL_ERROR_NO_CLIENT_RENOG: - alert_num = SSL_ALERT_NO_RENEGOTIATION; - break; - - default: - /* a catch-all for any badly verified certificates */ - alert_num = (error_code <= SSL_X509_OFFSET) ? - SSL_ALERT_BAD_CERTIFICATE : SSL_ALERT_UNEXPECTED_MESSAGE; - break; - } - - buf[0] = is_warning ? 1 : 2; - buf[1] = alert_num; - send_packet(ssl, PT_ALERT_PROTOCOL, buf, sizeof(buf)); - DISPLAY_ALERT(ssl, alert_num); - return is_warning ? 0 : 1; -} - -/** - * Process a client finished message. - */ -int process_finished(SSL *ssl, uint8_t *buf, int hs_len) -{ - int ret = SSL_OK; - int is_client = IS_SET_SSL_FLAG(SSL_IS_CLIENT); - int resume = IS_SET_SSL_FLAG(SSL_SESSION_RESUME); - - PARANOIA_CHECK(ssl->bm_index, SSL_FINISHED_HASH_SIZE+4); - - /* check that we all work before we continue */ - if (memcmp(ssl->dc->final_finish_mac, &buf[4], SSL_FINISHED_HASH_SIZE)) - return SSL_ERROR_FINISHED_INVALID; - - if ((!is_client && !resume) || (is_client && resume)) - { - if ((ret = send_change_cipher_spec(ssl)) == SSL_OK) - ret = send_finished(ssl); - } - - /* if we ever renegotiate */ - ssl->next_state = is_client ? HS_HELLO_REQUEST : HS_CLIENT_HELLO; - ssl->hs_status = ret; /* set the final handshake status */ - -error: - return ret; -} - -/** - * Send a certificate. - */ -int send_certificate(SSL *ssl) -{ - int i = 0; - uint8_t *buf = ssl->bm_data; - int offset = 7; - int chain_length; - - buf[0] = HS_CERTIFICATE; - buf[1] = 0; - buf[4] = 0; - - while (i < ssl->ssl_ctx->chain_length) - { - SSL_CERT *cert = &ssl->ssl_ctx->certs[i]; - buf[offset++] = 0; - buf[offset++] = cert->size >> 8; /* cert 1 length */ - buf[offset++] = cert->size & 0xff; - memcpy(&buf[offset], cert->buf, cert->size); - offset += cert->size; - i++; - } - - chain_length = offset - 7; - buf[5] = chain_length >> 8; /* cert chain length */ - buf[6] = chain_length & 0xff; - chain_length += 3; - buf[2] = chain_length >> 8; /* handshake length */ - buf[3] = chain_length & 0xff; - ssl->bm_index = offset; - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, NULL, offset); -} - -/** - * Create a blob of memory that we'll get rid of once the handshake is - * complete. - */ -void disposable_new(SSL *ssl) -{ - if (ssl->dc == NULL) - { - ssl->dc = (DISPOSABLE_CTX *)calloc(1, sizeof(DISPOSABLE_CTX)); - MD5_Init(&ssl->dc->md5_ctx); - SHA1_Init(&ssl->dc->sha1_ctx); - } -} - -/** - * Remove the temporary blob of memory. - */ -void disposable_free(SSL *ssl) -{ - if (ssl->dc) - { - free(ssl->dc->key_block); - memset(ssl->dc, 0, sizeof(DISPOSABLE_CTX)); - free(ssl->dc); - ssl->dc = NULL; - } - -} - -#ifndef CONFIG_SSL_SKELETON_MODE /* no session resumption in this mode */ -/** - * Find if an existing session has the same session id. If so, use the - * master secret from this session for session resumption. - */ -SSL_SESSION *ssl_session_update(int max_sessions, SSL_SESSION *ssl_sessions[], - SSL *ssl, const uint8_t *session_id) -{ - time_t tm = time(NULL); - time_t oldest_sess_time = tm; - SSL_SESSION *oldest_sess = NULL; - int i; - - /* no sessions? Then bail */ - if (max_sessions == 0) - return NULL; - - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - if (session_id) - { - for (i = 0; i < max_sessions; i++) - { - if (ssl_sessions[i]) - { - /* kill off any expired sessions */ - if (tm > ssl_sessions[i]->conn_time + SSL_EXPIRY_TIME) - { - session_free(ssl_sessions, i); - continue; - } - - /* if the session id matches, it must still be less than - the expiry time */ - if (memcmp(ssl_sessions[i]->session_id, session_id, - SSL_SESSION_ID_SIZE) == 0) - { - ssl->session_index = i; - memcpy(ssl->dc->master_secret, - ssl_sessions[i]->master_secret, SSL_SECRET_SIZE); - SET_SSL_FLAG(SSL_SESSION_RESUME); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - return ssl_sessions[i]; /* a session was found */ - } - } - } - } - - /* If we've got here, no matching session was found - so create one */ - for (i = 0; i < max_sessions; i++) - { - if (ssl_sessions[i] == NULL) - { - /* perfect, this will do */ - ssl_sessions[i] = (SSL_SESSION *)calloc(1, sizeof(SSL_SESSION)); - ssl_sessions[i]->conn_time = tm; - ssl->session_index = i; - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - return ssl_sessions[i]; /* return the session object */ - } - else if (ssl_sessions[i]->conn_time <= oldest_sess_time) - { - /* find the oldest session */ - oldest_sess_time = ssl_sessions[i]->conn_time; - oldest_sess = ssl_sessions[i]; - ssl->session_index = i; - } - } - - /* ok, we've used up all of our sessions. So blow the oldest session away */ - if (oldest_sess != NULL) - { - oldest_sess->conn_time = tm; - memset(oldest_sess->session_id, 0, sizeof(SSL_SESSION_ID_SIZE)); - memset(oldest_sess->master_secret, 0, sizeof(SSL_SECRET_SIZE)); - } - - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - return oldest_sess; -} - -/** - * Free an existing session. - */ -static void session_free(SSL_SESSION *ssl_sessions[], int sess_index) -{ - if (ssl_sessions[sess_index]) - { - free(ssl_sessions[sess_index]); - ssl_sessions[sess_index] = NULL; - } -} - -/** - * This ssl object doesn't want this session anymore. - */ -void kill_ssl_session(SSL_SESSION **ssl_sessions, SSL *ssl) -{ - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - - if (ssl->ssl_ctx->num_sessions) - { - session_free(ssl_sessions, ssl->session_index); - ssl->session = NULL; - } - - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); -} -#endif /* CONFIG_SSL_SKELETON_MODE */ - -/* - * Get the session id for a handshake. This will be a 32 byte sequence. - */ -EXP_FUNC const uint8_t * STDCALL ssl_get_session_id(const SSL *ssl) -{ - return ssl->session_id; -} - -/* - * Get the session id size for a handshake. - */ -EXP_FUNC uint8_t STDCALL ssl_get_session_id_size(const SSL *ssl) -{ - return ssl->sess_id_size; -} - -/* - * Return the cipher id (in the SSL form). - */ -EXP_FUNC uint8_t STDCALL ssl_get_cipher_id(const SSL *ssl) -{ - return ssl->cipher; -} - -/* - * Return the status of the handshake. - */ -EXP_FUNC int STDCALL ssl_handshake_status(const SSL *ssl) -{ - return ssl->hs_status; -} - -/* - * Retrieve various parameters about the SSL engine. - */ -EXP_FUNC int STDCALL ssl_get_config(int offset) -{ - switch (offset) - { - /* return the appropriate build mode */ - case SSL_BUILD_MODE: -#if defined(CONFIG_SSL_FULL_MODE) - return SSL_BUILD_FULL_MODE; -#elif defined(CONFIG_SSL_ENABLE_CLIENT) - return SSL_BUILD_ENABLE_CLIENT; -#elif defined(CONFIG_ENABLE_VERIFICATION) - return SSL_BUILD_ENABLE_VERIFICATION; -#elif defined(CONFIG_SSL_SERVER_ONLY ) - return SSL_BUILD_SERVER_ONLY; -#else - return SSL_BUILD_SKELETON_MODE; -#endif - - case SSL_MAX_CERT_CFG_OFFSET: - return CONFIG_SSL_MAX_CERTS; - -#ifdef CONFIG_SSL_CERT_VERIFICATION - case SSL_MAX_CA_CERT_CFG_OFFSET: - return CONFIG_X509_MAX_CA_CERTS; -#endif -#ifdef CONFIG_SSL_HAS_PEM - case SSL_HAS_PEM: - return 1; -#endif - default: - return 0; - } -} - -#ifdef CONFIG_SSL_CERT_VERIFICATION -/** - * Authenticate a received certificate. - */ -EXP_FUNC int STDCALL ssl_verify_cert(const SSL *ssl) -{ - int ret; - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - ret = x509_verify(ssl->ssl_ctx->ca_cert_ctx, ssl->x509_ctx); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - - if (ret) /* modify into an SSL error type */ - { - ret = SSL_X509_ERROR(ret); - } - - return ret; -} - -/** - * Process a certificate message. - */ -int process_certificate(SSL *ssl, X509_CTX **x509_ctx) -{ - int ret = SSL_OK; - uint8_t *buf = &ssl->bm_data[ssl->dc->bm_proc_index]; - int pkt_size = ssl->bm_index; - int cert_size, offset = 5; - int total_cert_size = (buf[offset]<<8) + buf[offset+1]; - int is_client = IS_SET_SSL_FLAG(SSL_IS_CLIENT); - X509_CTX **chain = x509_ctx; - offset += 2; - - PARANOIA_CHECK(total_cert_size, offset); - - while (offset < total_cert_size) - { - offset++; /* skip empty char */ - cert_size = (buf[offset]<<8) + buf[offset+1]; - offset += 2; - - if (x509_new(&buf[offset], NULL, chain)) - { - ret = SSL_ERROR_BAD_CERTIFICATE; - goto error; - } - - chain = &((*chain)->next); - offset += cert_size; - } - - PARANOIA_CHECK(pkt_size, offset); - - /* if we are client we can do the verify now or later */ - if (is_client && !IS_SET_SSL_FLAG(SSL_SERVER_VERIFY_LATER)) - { - ret = ssl_verify_cert(ssl); - } - - ssl->next_state = is_client ? HS_SERVER_HELLO_DONE : HS_CLIENT_KEY_XCHG; - ssl->dc->bm_proc_index += offset; -error: - return ret; -} - -#endif /* CONFIG_SSL_CERT_VERIFICATION */ - -/** - * Debugging routine to display SSL handshaking stuff. - */ -#ifdef CONFIG_SSL_FULL_MODE -/** - * Debugging routine to display SSL states. - */ -void DISPLAY_STATE(SSL *ssl, int is_send, uint8_t state, int not_ok) -{ - const char *str; - - if (!IS_SET_SSL_FLAG(SSL_DISPLAY_STATES)) - return; - - printf(not_ok ? "Error - invalid State:\t" : "State:\t"); - printf(is_send ? "sending " : "receiving "); - - switch (state) - { - case HS_HELLO_REQUEST: - str = "Hello Request (0)"; - break; - - case HS_CLIENT_HELLO: - str = "Client Hello (1)"; - break; - - case HS_SERVER_HELLO: - str = "Server Hello (2)"; - break; - - case HS_CERTIFICATE: - str = "Certificate (11)"; - break; - - case HS_SERVER_KEY_XCHG: - str = "Certificate Request (12)"; - break; - - case HS_CERT_REQ: - str = "Certificate Request (13)"; - break; - - case HS_SERVER_HELLO_DONE: - str = "Server Hello Done (14)"; - break; - - case HS_CERT_VERIFY: - str = "Certificate Verify (15)"; - break; - - case HS_CLIENT_KEY_XCHG: - str = "Client Key Exchange (16)"; - break; - - case HS_FINISHED: - str = "Finished (16)"; - break; - - default: - str = "Error (Unknown)"; - - break; - } - - printf("%s\n", str); - TTY_FLUSH(); -} - -/** - * Debugging routine to display RSA objects - */ -void DISPLAY_RSA(SSL *ssl, const RSA_CTX *rsa_ctx) -{ - if (!IS_SET_SSL_FLAG(SSL_DISPLAY_RSA)) - return; - - RSA_print(rsa_ctx); - TTY_FLUSH(); -} - -/** - * Debugging routine to display SSL handshaking bytes. - */ -void DISPLAY_BYTES(SSL *ssl, const char *format, - const uint8_t *data, int size, ...) -{ - va_list(ap); - - if (!IS_SET_SSL_FLAG(SSL_DISPLAY_BYTES)) - return; - - va_start(ap, size); - print_blob(format, data, size, va_arg(ap, char *)); - va_end(ap); - TTY_FLUSH(); -} - -/** - * Debugging routine to display SSL handshaking errors. - */ -EXP_FUNC void STDCALL ssl_display_error(int error_code) -{ - if (error_code == SSL_OK) - return; - - printf("Error: "); - - /* X509 error? */ - if (error_code < SSL_X509_OFFSET) - { - printf("%s\n", x509_display_error(error_code - SSL_X509_OFFSET)); - return; - } - - /* SSL alert error code */ - if (error_code > SSL_ERROR_CONN_LOST) - { - printf("SSL error %d\n", -error_code); - return; - } - - switch (error_code) - { - case SSL_ERROR_DEAD: - printf("connection dead"); - break; - - case SSL_ERROR_INVALID_HANDSHAKE: - printf("invalid handshake"); - break; - - case SSL_ERROR_INVALID_PROT_MSG: - printf("invalid protocol message"); - break; - - case SSL_ERROR_INVALID_HMAC: - printf("invalid mac"); - break; - - case SSL_ERROR_INVALID_VERSION: - printf("invalid version"); - break; - - case SSL_ERROR_INVALID_SESSION: - printf("invalid session"); - break; - - case SSL_ERROR_NO_CIPHER: - printf("no cipher"); - break; - - case SSL_ERROR_CONN_LOST: - printf("connection lost"); - break; - - case SSL_ERROR_BAD_CERTIFICATE: - printf("bad certificate"); - break; - - case SSL_ERROR_INVALID_KEY: - printf("invalid key"); - break; - - case SSL_ERROR_FINISHED_INVALID: - printf("finished invalid"); - break; - - case SSL_ERROR_NO_CERT_DEFINED: - printf("no certificate defined"); - break; - - case SSL_ERROR_NO_CLIENT_RENOG: - printf("client renegotiation not supported"); - break; - - case SSL_ERROR_NOT_SUPPORTED: - printf("Option not supported"); - break; - - default: - printf("undefined as yet - %d", error_code); - break; - } - - printf("\n"); - TTY_FLUSH(); -} - -/** - * Debugging routine to display alerts. - */ -void DISPLAY_ALERT(SSL *ssl, int alert) -{ - if (!IS_SET_SSL_FLAG(SSL_DISPLAY_STATES)) - return; - - printf("Alert: "); - - switch (alert) - { - case SSL_ALERT_CLOSE_NOTIFY: - printf("close notify"); - break; - - case SSL_ALERT_INVALID_VERSION: - printf("invalid version"); - break; - - case SSL_ALERT_BAD_CERTIFICATE: - printf("bad certificate"); - break; - - case SSL_ALERT_UNEXPECTED_MESSAGE: - printf("unexpected message"); - break; - - case SSL_ALERT_BAD_RECORD_MAC: - printf("bad record mac"); - break; - - case SSL_ALERT_HANDSHAKE_FAILURE: - printf("handshake failure"); - break; - - case SSL_ALERT_ILLEGAL_PARAMETER: - printf("illegal parameter"); - break; - - case SSL_ALERT_DECODE_ERROR: - printf("decode error"); - break; - - case SSL_ALERT_DECRYPT_ERROR: - printf("decrypt error"); - break; - - case SSL_ALERT_NO_RENEGOTIATION: - printf("no renegotiation"); - break; - - default: - printf("alert - (unknown %d)", alert); - break; - } - - printf("\n"); - TTY_FLUSH(); -} - -#endif /* CONFIG_SSL_FULL_MODE */ - -/** - * Return the version of this library. - */ -EXP_FUNC const char * STDCALL ssl_version() -{ - static const char * axtls_version = AXTLS_VERSION; - return axtls_version; -} - -/** - * Enable the various language bindings to work regardless of the - * configuration - they just return an error statement and a bad return code. - */ -#if !defined(CONFIG_SSL_FULL_MODE) -EXP_FUNC void STDCALL ssl_display_error(int error_code) {} -#endif - -#ifdef CONFIG_BINDINGS -#if !defined(CONFIG_SSL_ENABLE_CLIENT) -EXP_FUNC SSL * STDCALL ssl_client_new(SSL_CTX *ssl_ctx, int client_fd, const - uint8_t *session_id, uint8_t sess_id_size) -{ - printf(unsupported_str); - return NULL; -} -#endif - -#if !defined(CONFIG_SSL_CERT_VERIFICATION) -EXP_FUNC int STDCALL ssl_verify_cert(const SSL *ssl) -{ - printf(unsupported_str); - return -1; -} - - -EXP_FUNC const char * STDCALL ssl_get_cert_dn(const SSL *ssl, int component) -{ - printf(unsupported_str); - return NULL; -} - -EXP_FUNC const char * STDCALL ssl_get_cert_subject_alt_dnsname(const SSL *ssl, int index) -{ - printf(unsupported_str); - return NULL; -} - -#endif /* CONFIG_SSL_CERT_VERIFICATION */ - -#endif /* CONFIG_BINDINGS */ - diff --git a/axTLS/src/ssl/tls1.h b/axTLS/src/ssl/tls1.h deleted file mode 100644 index e73bc1a..0000000 --- a/axTLS/src/ssl/tls1.h +++ /dev/null @@ -1,295 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * @file tls1.h - * - * @brief The definitions for the TLS library. - */ -#ifndef HEADER_SSL_LIB_H -#define HEADER_SSL_LIB_H - -#ifdef __cplusplus -extern "C" { -#endif - -#include "version.h" -#include "crypto.h" -#include "crypto_misc.h" - -#define SSL_PROTOCOL_MIN_VERSION 0x31 /* TLS v1.0 */ -#define SSL_PROTOCOL_MINOR_VERSION 0x02 /* TLS v1.1 */ -#define SSL_PROTOCOL_VERSION_MAX 0x32 /* TLS v1.1 */ -#define SSL_PROTOCOL_VERSION1_1 0x32 /* TLS v1.1 */ -#define SSL_RANDOM_SIZE 32 -#define SSL_SECRET_SIZE 48 -#define SSL_FINISHED_HASH_SIZE 12 -#define SSL_RECORD_SIZE 5 -#define SSL_SERVER_READ 0 -#define SSL_SERVER_WRITE 1 -#define SSL_CLIENT_READ 2 -#define SSL_CLIENT_WRITE 3 -#define SSL_HS_HDR_SIZE 4 - -/* the flags we use while establishing a connection */ -#define SSL_NEED_RECORD 0x0001 -#define SSL_TX_ENCRYPTED 0x0002 -#define SSL_RX_ENCRYPTED 0x0004 -#define SSL_SESSION_RESUME 0x0008 -#define SSL_IS_CLIENT 0x0010 -#define SSL_HAS_CERT_REQ 0x0020 -#define SSL_SENT_CLOSE_NOTIFY 0x0040 - -/* some macros to muck around with flag bits */ -#define SET_SSL_FLAG(A) (ssl->flag |= A) -#define CLR_SSL_FLAG(A) (ssl->flag &= ~A) -#define IS_SET_SSL_FLAG(A) (ssl->flag & A) - -#define MAX_KEY_BYTE_SIZE 512 /* for a 4096 bit key */ -#define RT_MAX_PLAIN_LENGTH 16384 -#define RT_EXTRA 1024 -#define BM_RECORD_OFFSET 5 - -#ifdef CONFIG_SSL_SKELETON_MODE -#define NUM_PROTOCOLS 1 -#else -#define NUM_PROTOCOLS 4 -#endif - -#define PARANOIA_CHECK(A, B) if (A < B) { \ - ret = SSL_ERROR_INVALID_HANDSHAKE; goto error; } - -/* protocol types */ -enum -{ - PT_CHANGE_CIPHER_SPEC = 20, - PT_ALERT_PROTOCOL, - PT_HANDSHAKE_PROTOCOL, - PT_APP_PROTOCOL_DATA -}; - -/* handshaking types */ -enum -{ - HS_HELLO_REQUEST, - HS_CLIENT_HELLO, - HS_SERVER_HELLO, - HS_CERTIFICATE = 11, - HS_SERVER_KEY_XCHG, - HS_CERT_REQ, - HS_SERVER_HELLO_DONE, - HS_CERT_VERIFY, - HS_CLIENT_KEY_XCHG, - HS_FINISHED = 20 -}; - -typedef struct -{ - uint8_t cipher; - uint8_t key_size; - uint8_t iv_size; - uint8_t key_block_size; - uint8_t padding_size; - uint8_t digest_size; - hmac_func hmac; - crypt_func encrypt; - crypt_func decrypt; -} cipher_info_t; - -struct _SSLObjLoader -{ - uint8_t *buf; - int len; -}; - -typedef struct _SSLObjLoader SSLObjLoader; - -typedef struct -{ - time_t conn_time; - uint8_t session_id[SSL_SESSION_ID_SIZE]; - uint8_t master_secret[SSL_SECRET_SIZE]; -} SSL_SESSION; - -typedef struct -{ - uint8_t *buf; - int size; -} SSL_CERT; - -typedef struct -{ - MD5_CTX md5_ctx; - SHA1_CTX sha1_ctx; - uint8_t final_finish_mac[SSL_FINISHED_HASH_SIZE]; - uint8_t *key_block; - uint8_t master_secret[SSL_SECRET_SIZE]; - uint8_t client_random[SSL_RANDOM_SIZE]; /* client's random sequence */ - uint8_t server_random[SSL_RANDOM_SIZE]; /* server's random sequence */ - uint16_t bm_proc_index; -} DISPOSABLE_CTX; - -struct _SSL -{ - uint32_t flag; - uint16_t need_bytes; - uint16_t got_bytes; - uint8_t record_type; - uint8_t cipher; - uint8_t sess_id_size; - uint8_t version; - uint8_t client_version; - int16_t next_state; - int16_t hs_status; - DISPOSABLE_CTX *dc; /* temporary data which we'll get rid of soon */ - int client_fd; - const cipher_info_t *cipher_info; - void *encrypt_ctx; - void *decrypt_ctx; - uint8_t bm_all_data[RT_MAX_PLAIN_LENGTH+RT_EXTRA]; - uint8_t *bm_data; - uint16_t bm_index; - uint16_t bm_read_index; - struct _SSL *next; /* doubly linked list */ - struct _SSL *prev; - struct _SSL_CTX *ssl_ctx; /* back reference to a clnt/svr ctx */ -#ifndef CONFIG_SSL_SKELETON_MODE - uint16_t session_index; - SSL_SESSION *session; -#endif -#ifdef CONFIG_SSL_CERT_VERIFICATION - X509_CTX *x509_ctx; -#endif - - uint8_t session_id[SSL_SESSION_ID_SIZE]; - uint8_t client_mac[SHA1_SIZE]; /* for HMAC verification */ - uint8_t server_mac[SHA1_SIZE]; /* for HMAC verification */ - uint8_t read_sequence[8]; /* 64 bit sequence number */ - uint8_t write_sequence[8]; /* 64 bit sequence number */ - uint8_t hmac_header[SSL_RECORD_SIZE]; /* rx hmac */ -}; - -typedef struct _SSL SSL; - -struct _SSL_CTX -{ - uint32_t options; - uint8_t chain_length; - RSA_CTX *rsa_ctx; -#ifdef CONFIG_SSL_CERT_VERIFICATION - CA_CERT_CTX *ca_cert_ctx; -#endif - SSL *head; - SSL *tail; - SSL_CERT certs[CONFIG_SSL_MAX_CERTS]; -#ifndef CONFIG_SSL_SKELETON_MODE - uint16_t num_sessions; - SSL_SESSION **ssl_sessions; -#endif -#ifdef CONFIG_SSL_CTX_MUTEXING - SSL_CTX_MUTEX_TYPE mutex; -#endif -#ifdef CONFIG_OPENSSL_COMPATIBLE - void *bonus_attr; -#endif -}; - -typedef struct _SSL_CTX SSL_CTX; - -/* backwards compatibility */ -typedef struct _SSL_CTX SSLCTX; - -extern const uint8_t ssl_prot_prefs[NUM_PROTOCOLS]; - -SSL *ssl_new(SSL_CTX *ssl_ctx, int client_fd); -void disposable_new(SSL *ssl); -void disposable_free(SSL *ssl); -int send_packet(SSL *ssl, uint8_t protocol, - const uint8_t *in, int length); -int do_svr_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len); -int do_clnt_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len); -int process_finished(SSL *ssl, uint8_t *buf, int hs_len); -int process_sslv23_client_hello(SSL *ssl); -int send_alert(SSL *ssl, int error_code); -int send_finished(SSL *ssl); -int send_certificate(SSL *ssl); -int basic_read(SSL *ssl, uint8_t **in_data); -int send_change_cipher_spec(SSL *ssl); -void finished_digest(SSL *ssl, const char *label, uint8_t *digest); -void generate_master_secret(SSL *ssl, const uint8_t *premaster_secret); -void add_packet(SSL *ssl, const uint8_t *pkt, int len); -int add_cert(SSL_CTX *ssl_ctx, const uint8_t *buf, int len); -int add_private_key(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj); -void ssl_obj_free(SSLObjLoader *ssl_obj); -int pkcs8_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password); -int pkcs12_decode(SSL_CTX *ssl_ctx, SSLObjLoader *ssl_obj, const char *password); -int load_key_certs(SSL_CTX *ssl_ctx); -#ifdef CONFIG_SSL_CERT_VERIFICATION -int add_cert_auth(SSL_CTX *ssl_ctx, const uint8_t *buf, int len); -void remove_ca_certs(CA_CERT_CTX *ca_cert_ctx); -#endif -#ifdef CONFIG_SSL_ENABLE_CLIENT -int do_client_connect(SSL *ssl); -#endif - -#ifdef CONFIG_SSL_FULL_MODE -void DISPLAY_STATE(SSL *ssl, int is_send, uint8_t state, int not_ok); -void DISPLAY_BYTES(SSL *ssl, const char *format, - const uint8_t *data, int size, ...); -void DISPLAY_CERT(SSL *ssl, const X509_CTX *x509_ctx); -void DISPLAY_RSA(SSL *ssl, const RSA_CTX *rsa_ctx); -void DISPLAY_ALERT(SSL *ssl, int alert); -#else -#define DISPLAY_STATE(A,B,C,D) -#define DISPLAY_CERT(A,B) -#define DISPLAY_RSA(A,B) -#define DISPLAY_ALERT(A, B) -#ifdef WIN32 -void DISPLAY_BYTES(SSL *ssl, const char *format,/* win32 has no variadic macros */ - const uint8_t *data, int size, ...); -#else -#define DISPLAY_BYTES(A,B,C,D,...) -#endif -#endif - -#ifdef CONFIG_SSL_CERT_VERIFICATION -int process_certificate(SSL *ssl, X509_CTX **x509_ctx); -#endif - -SSL_SESSION *ssl_session_update(int max_sessions, - SSL_SESSION *ssl_sessions[], SSL *ssl, - const uint8_t *session_id); -void kill_ssl_session(SSL_SESSION **ssl_sessions, SSL *ssl); - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/axTLS/src/ssl/tls1_clnt.c b/axTLS/src/ssl/tls1_clnt.c deleted file mode 100644 index 196b40e..0000000 --- a/axTLS/src/ssl/tls1_clnt.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -#ifdef CONFIG_SSL_ENABLE_CLIENT /* all commented out if no client */ - -static int send_client_hello(SSL *ssl); -static int process_server_hello(SSL *ssl); -static int process_server_hello_done(SSL *ssl); -static int send_client_key_xchg(SSL *ssl); -static int process_cert_req(SSL *ssl); -static int send_cert_verify(SSL *ssl); - -/* - * Establish a new SSL connection to an SSL server. - */ -EXP_FUNC SSL * STDCALL ssl_client_new(SSL_CTX *ssl_ctx, int client_fd, const - uint8_t *session_id, uint8_t sess_id_size) -{ - SSL *ssl = ssl_new(ssl_ctx, client_fd); - ssl->version = SSL_PROTOCOL_VERSION_MAX; /* try top version first */ - - if (session_id && ssl_ctx->num_sessions) - { - if (sess_id_size > SSL_SESSION_ID_SIZE) /* validity check */ - { - ssl_free(ssl); - return NULL; - } - - memcpy(ssl->session_id, session_id, sess_id_size); - ssl->sess_id_size = sess_id_size; - SET_SSL_FLAG(SSL_SESSION_RESUME); /* just flag for later */ - } - - SET_SSL_FLAG(SSL_IS_CLIENT); - do_client_connect(ssl); - return ssl; -} - -/* - * Process the handshake record. - */ -int do_clnt_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len) -{ - int ret; - - /* To get here the state must be valid */ - switch (handshake_type) - { - case HS_SERVER_HELLO: - ret = process_server_hello(ssl); - break; - - case HS_CERTIFICATE: - ret = process_certificate(ssl, &ssl->x509_ctx); - break; - - case HS_SERVER_HELLO_DONE: - if ((ret = process_server_hello_done(ssl)) == SSL_OK) - { - if (IS_SET_SSL_FLAG(SSL_HAS_CERT_REQ)) - { - if ((ret = send_certificate(ssl)) == SSL_OK && - (ret = send_client_key_xchg(ssl)) == SSL_OK) - { - send_cert_verify(ssl); - } - } - else - { - ret = send_client_key_xchg(ssl); - } - - if (ret == SSL_OK && - (ret = send_change_cipher_spec(ssl)) == SSL_OK) - { - ret = send_finished(ssl); - } - } - break; - - case HS_CERT_REQ: - ret = process_cert_req(ssl); - break; - - case HS_FINISHED: - ret = process_finished(ssl, buf, hs_len); - disposable_free(ssl); /* free up some memory */ - /* note: client renegotiation is not allowed after this */ - break; - - case HS_HELLO_REQUEST: - disposable_new(ssl); - ret = do_client_connect(ssl); - break; - - default: - ret = SSL_ERROR_INVALID_HANDSHAKE; - break; - } - - return ret; -} - -/* - * Do the handshaking from the beginning. - */ -int do_client_connect(SSL *ssl) -{ - int ret = SSL_OK; - - send_client_hello(ssl); /* send the client hello */ - ssl->bm_read_index = 0; - ssl->next_state = HS_SERVER_HELLO; - ssl->hs_status = SSL_NOT_OK; /* not connected */ - - /* sit in a loop until it all looks good */ - if (!IS_SET_SSL_FLAG(SSL_CONNECT_IN_PARTS)) - { - while (ssl->hs_status != SSL_OK) - { - ret = ssl_read(ssl, NULL); - - if (ret < SSL_OK) - break; - } - - ssl->hs_status = ret; /* connected? */ - } - - return ret; -} - -/* - * Send the initial client hello. - */ -static int send_client_hello(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - time_t tm = time(NULL); - uint8_t *tm_ptr = &buf[6]; /* time will go here */ - int i, offset; - - buf[0] = HS_CLIENT_HELLO; - buf[1] = 0; - buf[2] = 0; - /* byte 3 is calculated later */ - buf[4] = 0x03; - buf[5] = ssl->version & 0x0f; - - /* client random value - spec says that 1st 4 bytes are big endian time */ - *tm_ptr++ = (uint8_t)(((long)tm & 0xff000000) >> 24); - *tm_ptr++ = (uint8_t)(((long)tm & 0x00ff0000) >> 16); - *tm_ptr++ = (uint8_t)(((long)tm & 0x0000ff00) >> 8); - *tm_ptr++ = (uint8_t)(((long)tm & 0x000000ff)); - get_random(SSL_RANDOM_SIZE-4, &buf[10]); - memcpy(ssl->dc->client_random, &buf[6], SSL_RANDOM_SIZE); - offset = 6 + SSL_RANDOM_SIZE; - - /* give session resumption a go */ - if (IS_SET_SSL_FLAG(SSL_SESSION_RESUME)) /* set initially by user */ - { - buf[offset++] = ssl->sess_id_size; - memcpy(&buf[offset], ssl->session_id, ssl->sess_id_size); - offset += ssl->sess_id_size; - CLR_SSL_FLAG(SSL_SESSION_RESUME); /* clear so we can set later */ - } - else - { - /* no session id - because no session resumption just yet */ - buf[offset++] = 0; - } - - buf[offset++] = 0; /* number of ciphers */ - buf[offset++] = NUM_PROTOCOLS*2;/* number of ciphers */ - - /* put all our supported protocols in our request */ - for (i = 0; i < NUM_PROTOCOLS; i++) - { - buf[offset++] = 0; /* cipher we are using */ - buf[offset++] = ssl_prot_prefs[i]; - } - - buf[offset++] = 1; /* no compression */ - buf[offset++] = 0; - buf[3] = offset - 4; /* handshake size */ - - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, NULL, offset); -} - -/* - * Process the server hello. - */ -static int process_server_hello(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - int pkt_size = ssl->bm_index; - int num_sessions = ssl->ssl_ctx->num_sessions; - uint8_t sess_id_size; - int offset, ret = SSL_OK; - - /* check that we are talking to a TLSv1 server */ - uint8_t version = (buf[4] << 4) + buf[5]; - if (version > SSL_PROTOCOL_VERSION_MAX) - { - version = SSL_PROTOCOL_VERSION_MAX; - } - else if (ssl->version < SSL_PROTOCOL_MIN_VERSION) - { - ret = SSL_ERROR_INVALID_VERSION; - ssl_display_error(ret); - goto error; - } - - ssl->version = version; - - /* get the server random value */ - memcpy(ssl->dc->server_random, &buf[6], SSL_RANDOM_SIZE); - offset = 6 + SSL_RANDOM_SIZE; /* skip of session id size */ - sess_id_size = buf[offset++]; - - if (sess_id_size > SSL_SESSION_ID_SIZE) - { - ret = SSL_ERROR_INVALID_SESSION; - goto error; - } - - if (num_sessions) - { - ssl->session = ssl_session_update(num_sessions, - ssl->ssl_ctx->ssl_sessions, ssl, &buf[offset]); - memcpy(ssl->session->session_id, &buf[offset], sess_id_size); - - /* pad the rest with 0's */ - if (sess_id_size < SSL_SESSION_ID_SIZE) - { - memset(&ssl->session->session_id[sess_id_size], 0, - SSL_SESSION_ID_SIZE-sess_id_size); - } - } - - memcpy(ssl->session_id, &buf[offset], sess_id_size); - ssl->sess_id_size = sess_id_size; - offset += sess_id_size; - - /* get the real cipher we are using */ - ssl->cipher = buf[++offset]; - ssl->next_state = IS_SET_SSL_FLAG(SSL_SESSION_RESUME) ? - HS_FINISHED : HS_CERTIFICATE; - - offset++; // skip the compr - PARANOIA_CHECK(pkt_size, offset); - ssl->dc->bm_proc_index = offset+1; - -error: - return ret; -} - -/** - * Process the server hello done message. - */ -static int process_server_hello_done(SSL *ssl) -{ - ssl->next_state = HS_FINISHED; - return SSL_OK; -} - -/* - * Send a client key exchange message. - */ -static int send_client_key_xchg(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - uint8_t premaster_secret[SSL_SECRET_SIZE]; - int enc_secret_size = -1; - - buf[0] = HS_CLIENT_KEY_XCHG; - buf[1] = 0; - - premaster_secret[0] = 0x03; /* encode the version number */ - premaster_secret[1] = SSL_PROTOCOL_MINOR_VERSION; /* must be TLS 1.1 */ - get_random(SSL_SECRET_SIZE-2, &premaster_secret[2]); - DISPLAY_RSA(ssl, ssl->x509_ctx->rsa_ctx); - - /* rsa_ctx->bi_ctx is not thread-safe */ - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - enc_secret_size = RSA_encrypt(ssl->x509_ctx->rsa_ctx, premaster_secret, - SSL_SECRET_SIZE, &buf[6], 0); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - - buf[2] = (enc_secret_size + 2) >> 8; - buf[3] = (enc_secret_size + 2) & 0xff; - buf[4] = enc_secret_size >> 8; - buf[5] = enc_secret_size & 0xff; - - generate_master_secret(ssl, premaster_secret); - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, NULL, enc_secret_size+6); -} - -/* - * Process the certificate request. - */ -static int process_cert_req(SSL *ssl) -{ - uint8_t *buf = &ssl->bm_data[ssl->dc->bm_proc_index]; - int ret = SSL_OK; - int offset = (buf[2] << 4) + buf[3]; - int pkt_size = ssl->bm_index; - - /* don't do any processing - we will send back an RSA certificate anyway */ - ssl->next_state = HS_SERVER_HELLO_DONE; - SET_SSL_FLAG(SSL_HAS_CERT_REQ); - ssl->dc->bm_proc_index += offset; - PARANOIA_CHECK(pkt_size, offset); -error: - return ret; -} - -/* - * Send a certificate verify message. - */ -static int send_cert_verify(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - uint8_t dgst[MD5_SIZE+SHA1_SIZE]; - RSA_CTX *rsa_ctx = ssl->ssl_ctx->rsa_ctx; - int n = 0, ret; - - DISPLAY_RSA(ssl, rsa_ctx); - - buf[0] = HS_CERT_VERIFY; - buf[1] = 0; - - finished_digest(ssl, NULL, dgst); /* calculate the digest */ - - /* rsa_ctx->bi_ctx is not thread-safe */ - if (rsa_ctx) - { - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - n = RSA_encrypt(rsa_ctx, dgst, sizeof(dgst), &buf[6], 1); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - - if (n == 0) - { - ret = SSL_ERROR_INVALID_KEY; - goto error; - } - } - - buf[4] = n >> 8; /* add the RSA size (not officially documented) */ - buf[5] = n & 0xff; - n += 2; - buf[2] = n >> 8; - buf[3] = n & 0xff; - ret = send_packet(ssl, PT_HANDSHAKE_PROTOCOL, NULL, n+4); - -error: - return ret; -} - -#endif /* CONFIG_SSL_ENABLE_CLIENT */ diff --git a/axTLS/src/ssl/tls1_svr.c b/axTLS/src/ssl/tls1_svr.c deleted file mode 100644 index f374928..0000000 --- a/axTLS/src/ssl/tls1_svr.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -#include -#include -#include "os_port.h" -#include "ssl.h" - -static const uint8_t g_hello_done[] = { HS_SERVER_HELLO_DONE, 0, 0, 0 }; - -static int process_client_hello(SSL *ssl); -static int send_server_hello_sequence(SSL *ssl); -static int send_server_hello(SSL *ssl); -static int send_server_hello_done(SSL *ssl); -static int process_client_key_xchg(SSL *ssl); -#ifdef CONFIG_SSL_CERT_VERIFICATION -static int send_certificate_request(SSL *ssl); -static int process_cert_verify(SSL *ssl); -#endif - -/* - * Establish a new SSL connection to an SSL client. - */ -EXP_FUNC SSL * STDCALL ssl_server_new(SSL_CTX *ssl_ctx, int client_fd) -{ - SSL *ssl; - - ssl = ssl_new(ssl_ctx, client_fd); - ssl->next_state = HS_CLIENT_HELLO; - -#ifdef CONFIG_SSL_FULL_MODE - if (ssl_ctx->chain_length == 0) - printf("Warning - no server certificate defined\n"); TTY_FLUSH(); -#endif - - return ssl; -} - -/* - * Process the handshake record. - */ -int do_svr_handshake(SSL *ssl, int handshake_type, uint8_t *buf, int hs_len) -{ - int ret = SSL_OK; - ssl->hs_status = SSL_NOT_OK; /* not connected */ - - /* To get here the state must be valid */ - switch (handshake_type) - { - case HS_CLIENT_HELLO: - if ((ret = process_client_hello(ssl)) == SSL_OK) - ret = send_server_hello_sequence(ssl); - break; - -#ifdef CONFIG_SSL_CERT_VERIFICATION - case HS_CERTIFICATE:/* the client sends its cert */ - ret = process_certificate(ssl, &ssl->x509_ctx); - - if (ret == SSL_OK) /* verify the cert */ - { - int cert_res; - cert_res = x509_verify( - ssl->ssl_ctx->ca_cert_ctx, ssl->x509_ctx); - ret = (cert_res == 0) ? SSL_OK : SSL_X509_ERROR(cert_res); - } - break; - - case HS_CERT_VERIFY: - ret = process_cert_verify(ssl); - add_packet(ssl, buf, hs_len); /* needs to be done after */ - break; -#endif - case HS_CLIENT_KEY_XCHG: - ret = process_client_key_xchg(ssl); - break; - - case HS_FINISHED: - ret = process_finished(ssl, buf, hs_len); - disposable_free(ssl); /* free up some memory */ - break; - } - - return ret; -} - -/* - * Process a client hello message. - */ -static int process_client_hello(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - uint8_t *record_buf = ssl->hmac_header; - int pkt_size = ssl->bm_index; - int i, j, cs_len, id_len, offset = 6 + SSL_RANDOM_SIZE; - int ret = SSL_OK; - - uint8_t version = (record_buf[1] << 4) + record_buf[2]; - ssl->version = ssl->client_version = version; - - if (version > SSL_PROTOCOL_VERSION_MAX) - { - /* use client's version instead */ - ssl->version = SSL_PROTOCOL_VERSION_MAX; - } - else if (version < SSL_PROTOCOL_MIN_VERSION) /* old version supported? */ - { - ret = SSL_ERROR_INVALID_VERSION; - ssl_display_error(ret); - goto error; - } - - memcpy(ssl->dc->client_random, &buf[6], SSL_RANDOM_SIZE); - - /* process the session id */ - id_len = buf[offset++]; - if (id_len > SSL_SESSION_ID_SIZE) - { - return SSL_ERROR_INVALID_SESSION; - } - -#ifndef CONFIG_SSL_SKELETON_MODE - ssl->session = ssl_session_update(ssl->ssl_ctx->num_sessions, - ssl->ssl_ctx->ssl_sessions, ssl, id_len ? &buf[offset] : NULL); -#endif - - offset += id_len; - cs_len = (buf[offset]<<8) + buf[offset+1]; - offset += 3; /* add 1 due to all cipher suites being 8 bit */ - - PARANOIA_CHECK(pkt_size, offset); - - /* work out what cipher suite we are going to use - client defines - the preference */ - for (i = 0; i < cs_len; i += 2) - { - for (j = 0; j < NUM_PROTOCOLS; j++) - { - if (ssl_prot_prefs[j] == buf[offset+i]) /* got a match? */ - { - ssl->cipher = ssl_prot_prefs[j]; - goto do_state; - } - } - } - - /* ouch! protocol is not supported */ - ret = SSL_ERROR_NO_CIPHER; - -do_state: -error: - return ret; -} - -#ifdef CONFIG_SSL_ENABLE_V23_HANDSHAKE -/* - * Some browsers use a hybrid SSLv2 "client hello" - */ -int process_sslv23_client_hello(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - int bytes_needed = ((buf[0] & 0x7f) << 8) + buf[1]; - int ret = SSL_OK; - - /* we have already read 3 extra bytes so far */ - int read_len = SOCKET_READ(ssl->client_fd, buf, bytes_needed-3); - int cs_len = buf[1]; - int id_len = buf[3]; - int ch_len = buf[5]; - int i, j, offset = 8; /* start at first cipher */ - int random_offset = 0; - - DISPLAY_BYTES(ssl, "received %d bytes", buf, read_len, read_len); - - add_packet(ssl, buf, read_len); - - /* connection has gone, so die */ - if (bytes_needed < 0) - { - return SSL_ERROR_CONN_LOST; - } - - /* now work out what cipher suite we are going to use */ - for (j = 0; j < NUM_PROTOCOLS; j++) - { - for (i = 0; i < cs_len; i += 3) - { - if (ssl_prot_prefs[j] == buf[offset+i]) - { - ssl->cipher = ssl_prot_prefs[j]; - goto server_hello; - } - } - } - - /* ouch! protocol is not supported */ - ret = SSL_ERROR_NO_CIPHER; - goto error; - -server_hello: - /* get the session id */ - offset += cs_len - 2; /* we've gone 2 bytes past the end */ -#ifndef CONFIG_SSL_SKELETON_MODE - ssl->session = ssl_session_update(ssl->ssl_ctx->num_sessions, - ssl->ssl_ctx->ssl_sessions, ssl, id_len ? &buf[offset] : NULL); -#endif - - /* get the client random data */ - offset += id_len; - - /* random can be anywhere between 16 and 32 bytes long - so it is padded - * with 0's to the left */ - if (ch_len == 0x10) - { - random_offset += 0x10; - } - - memcpy(&ssl->dc->client_random[random_offset], &buf[offset], ch_len); - ret = send_server_hello_sequence(ssl); - -error: - return ret; -} -#endif - -/* - * Send the entire server hello sequence - */ -static int send_server_hello_sequence(SSL *ssl) -{ - int ret; - - if ((ret = send_server_hello(ssl)) == SSL_OK) - { -#ifndef CONFIG_SSL_SKELETON_MODE - /* resume handshake? */ - if (IS_SET_SSL_FLAG(SSL_SESSION_RESUME)) - { - if ((ret = send_change_cipher_spec(ssl)) == SSL_OK) - { - ret = send_finished(ssl); - ssl->next_state = HS_FINISHED; - } - } - else -#endif - if ((ret = send_certificate(ssl)) == SSL_OK) - { -#ifdef CONFIG_SSL_CERT_VERIFICATION - /* ask the client for its certificate */ - if (IS_SET_SSL_FLAG(SSL_CLIENT_AUTHENTICATION)) - { - if ((ret = send_certificate_request(ssl)) == SSL_OK) - { - ret = send_server_hello_done(ssl); - ssl->next_state = HS_CERTIFICATE; - } - } - else -#endif - { - ret = send_server_hello_done(ssl); - ssl->next_state = HS_CLIENT_KEY_XCHG; - } - } - } - - return ret; -} - -/* - * Send a server hello message. - */ -static int send_server_hello(SSL *ssl) -{ - uint8_t *buf = ssl->bm_data; - int offset = 0; - - buf[0] = HS_SERVER_HELLO; - buf[1] = 0; - buf[2] = 0; - /* byte 3 is calculated later */ - buf[4] = 0x03; - buf[5] = ssl->version & 0x0f; - - /* server random value */ - get_random(SSL_RANDOM_SIZE, &buf[6]); - memcpy(ssl->dc->server_random, &buf[6], SSL_RANDOM_SIZE); - offset = 6 + SSL_RANDOM_SIZE; - -#ifndef CONFIG_SSL_SKELETON_MODE - if (IS_SET_SSL_FLAG(SSL_SESSION_RESUME)) - { - /* retrieve id from session cache */ - buf[offset++] = SSL_SESSION_ID_SIZE; - memcpy(&buf[offset], ssl->session->session_id, SSL_SESSION_ID_SIZE); - memcpy(ssl->session_id, ssl->session->session_id, SSL_SESSION_ID_SIZE); - ssl->sess_id_size = SSL_SESSION_ID_SIZE; - offset += SSL_SESSION_ID_SIZE; - } - else /* generate our own session id */ -#endif - { -#ifndef CONFIG_SSL_SKELETON_MODE - buf[offset++] = SSL_SESSION_ID_SIZE; - get_random(SSL_SESSION_ID_SIZE, &buf[offset]); - memcpy(ssl->session_id, &buf[offset], SSL_SESSION_ID_SIZE); - ssl->sess_id_size = SSL_SESSION_ID_SIZE; - - /* store id in session cache */ - if (ssl->ssl_ctx->num_sessions) - { - memcpy(ssl->session->session_id, - ssl->session_id, SSL_SESSION_ID_SIZE); - } - - offset += SSL_SESSION_ID_SIZE; -#else - buf[offset++] = 0; /* don't bother with session id in skelton mode */ -#endif - } - - buf[offset++] = 0; /* cipher we are using */ - buf[offset++] = ssl->cipher; - buf[offset++] = 0; /* no compression */ - buf[3] = offset - 4; /* handshake size */ - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, NULL, offset); -} - -/* - * Send the server hello done message. - */ -static int send_server_hello_done(SSL *ssl) -{ - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, - g_hello_done, sizeof(g_hello_done)); -} - -/* - * Pull apart a client key exchange message. Decrypt the pre-master key (using - * our RSA private key) and then work out the master key. Initialise the - * ciphers. - */ -static int process_client_key_xchg(SSL *ssl) -{ - uint8_t *buf = &ssl->bm_data[ssl->dc->bm_proc_index]; - int pkt_size = ssl->bm_index; - int premaster_size, secret_length = (buf[2] << 8) + buf[3]; - uint8_t premaster_secret[MAX_KEY_BYTE_SIZE]; - RSA_CTX *rsa_ctx = ssl->ssl_ctx->rsa_ctx; - int offset = 4; - int ret = SSL_OK; - - if (rsa_ctx == NULL) - { - ret = SSL_ERROR_NO_CERT_DEFINED; - goto error; - } - - /* is there an extra size field? */ - if ((secret_length - 2) == rsa_ctx->num_octets) - offset += 2; - - PARANOIA_CHECK(pkt_size, rsa_ctx->num_octets+offset); - - /* rsa_ctx->bi_ctx is not thread-safe */ - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - premaster_size = RSA_decrypt(rsa_ctx, &buf[offset], premaster_secret, 1); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - - if (premaster_size != SSL_SECRET_SIZE || - premaster_secret[0] != 0x03 || /* must be the same as client - offered version */ - premaster_secret[1] != (ssl->client_version & 0x0f)) - { - /* guard against a Bleichenbacher attack */ - get_random(SSL_SECRET_SIZE, premaster_secret); - /* and continue - will die eventually when checking the mac */ - } - -#if 0 - print_blob("pre-master", premaster_secret, SSL_SECRET_SIZE); -#endif - - generate_master_secret(ssl, premaster_secret); - -#ifdef CONFIG_SSL_CERT_VERIFICATION - ssl->next_state = IS_SET_SSL_FLAG(SSL_CLIENT_AUTHENTICATION) ? - HS_CERT_VERIFY : HS_FINISHED; -#else - ssl->next_state = HS_FINISHED; -#endif - - ssl->dc->bm_proc_index += rsa_ctx->num_octets+offset; -error: - return ret; -} - -#ifdef CONFIG_SSL_CERT_VERIFICATION -static const uint8_t g_cert_request[] = { HS_CERT_REQ, 0, 0, 4, 1, 0, 0, 0 }; - -/* - * Send the certificate request message. - */ -static int send_certificate_request(SSL *ssl) -{ - return send_packet(ssl, PT_HANDSHAKE_PROTOCOL, - g_cert_request, sizeof(g_cert_request)); -} - -/* - * Ensure the client has the private key by first decrypting the packet and - * then checking the packet digests. - */ -static int process_cert_verify(SSL *ssl) -{ - uint8_t *buf = &ssl->bm_data[ssl->dc->bm_proc_index]; - int pkt_size = ssl->bm_index; - uint8_t dgst_buf[MAX_KEY_BYTE_SIZE]; - uint8_t dgst[MD5_SIZE+SHA1_SIZE]; - X509_CTX *x509_ctx = ssl->x509_ctx; - int ret = SSL_OK; - int n; - - PARANOIA_CHECK(pkt_size, x509_ctx->rsa_ctx->num_octets+6); - DISPLAY_RSA(ssl, x509_ctx->rsa_ctx); - - /* rsa_ctx->bi_ctx is not thread-safe */ - SSL_CTX_LOCK(ssl->ssl_ctx->mutex); - n = RSA_decrypt(x509_ctx->rsa_ctx, &buf[6], dgst_buf, 0); - SSL_CTX_UNLOCK(ssl->ssl_ctx->mutex); - - if (n != SHA1_SIZE + MD5_SIZE) - { - ret = SSL_ERROR_INVALID_KEY; - goto end_cert_vfy; - } - - finished_digest(ssl, NULL, dgst); /* calculate the digest */ - if (memcmp(dgst_buf, dgst, MD5_SIZE + SHA1_SIZE)) - { - ret = SSL_ERROR_INVALID_KEY; - } - -end_cert_vfy: - ssl->next_state = HS_FINISHED; -error: - return ret; -} - -#endif diff --git a/axTLS/src/ssl/version.h b/axTLS/src/ssl/version.h deleted file mode 100644 index cc1ddb2..0000000 --- a/axTLS/src/ssl/version.h +++ /dev/null @@ -1 +0,0 @@ -#define AXTLS_VERSION "1.4.4" diff --git a/axTLS/src/ssl/x509.c b/axTLS/src/ssl/x509.c deleted file mode 100644 index 116fa00..0000000 --- a/axTLS/src/ssl/x509.c +++ /dev/null @@ -1,564 +0,0 @@ -/* - * Copyright (c) 2007, Cameron Rich - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of the axTLS project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/** - * @file x509.c - * - * Certificate processing. - */ - -#include -#include -#include -#include -#include "os_port.h" -#include "crypto_misc.h" - -#ifdef CONFIG_SSL_CERT_VERIFICATION -/** - * Retrieve the signature from a certificate. - */ -static const uint8_t *get_signature(const uint8_t *asn1_sig, int *len) -{ - int offset = 0; - const uint8_t *ptr = NULL; - - if (asn1_next_obj(asn1_sig, &offset, ASN1_SEQUENCE) < 0 || - asn1_skip_obj(asn1_sig, &offset, ASN1_SEQUENCE)) - goto end_get_sig; - - if (asn1_sig[offset++] != ASN1_OCTET_STRING) - goto end_get_sig; - *len = get_asn1_length(asn1_sig, &offset); - ptr = &asn1_sig[offset]; /* all ok */ - -end_get_sig: - return ptr; -} - -#endif - -/** - * Construct a new x509 object. - * @return 0 if ok. < 0 if there was a problem. - */ -int x509_new(const uint8_t *cert, int *len, X509_CTX **ctx) -{ - int begin_tbs, end_tbs; - int ret = X509_NOT_OK, offset = 0, cert_size = 0; - X509_CTX *x509_ctx; - BI_CTX *bi_ctx; - SHA1_CTX sha_ctx_fp; - - *ctx = (X509_CTX *)calloc(1, sizeof(X509_CTX)); - x509_ctx = *ctx; - - /* get the certificate size */ - asn1_skip_obj(cert, &cert_size, ASN1_SEQUENCE); - - if (asn1_next_obj(cert, &offset, ASN1_SEQUENCE) < 0) - goto end_cert; - - begin_tbs = offset; /* start of the tbs */ - end_tbs = begin_tbs; /* work out the end of the tbs */ - asn1_skip_obj(cert, &end_tbs, ASN1_SEQUENCE); - - if (asn1_next_obj(cert, &offset, ASN1_SEQUENCE) < 0) - goto end_cert; - - if (cert[offset] == ASN1_EXPLICIT_TAG) /* optional version */ - { - if (asn1_version(cert, &offset, x509_ctx)) - goto end_cert; - } - - if (asn1_skip_obj(cert, &offset, ASN1_INTEGER) || /* serial number */ - asn1_next_obj(cert, &offset, ASN1_SEQUENCE) < 0) - goto end_cert; - - /* make sure the signature is ok */ - if (asn1_signature_type(cert, &offset, x509_ctx)) - { - ret = X509_VFY_ERROR_UNSUPPORTED_DIGEST; - goto end_cert; - } - - if (asn1_name(cert, &offset, x509_ctx->ca_cert_dn) || - asn1_validity(cert, &offset, x509_ctx) || - asn1_name(cert, &offset, x509_ctx->cert_dn) || - asn1_public_key(cert, &offset, x509_ctx)) - { - goto end_cert; - } - - bi_ctx = x509_ctx->rsa_ctx->bi_ctx; - - SHA1_Init(&sha_ctx_fp); - SHA1_Update(&sha_ctx_fp, cert, cert_size); - SHA1_Final(x509_ctx->sha1_fingerprint, &sha_ctx_fp); - -#ifdef CONFIG_SSL_CERT_VERIFICATION /* only care if doing verification */ - /* use the appropriate signature algorithm (SHA1/MD5/MD2) */ - if (x509_ctx->sig_type == SIG_TYPE_MD5) - { - MD5_CTX md5_ctx; - uint8_t md5_dgst[MD5_SIZE]; - MD5_Init(&md5_ctx); - MD5_Update(&md5_ctx, &cert[begin_tbs], end_tbs-begin_tbs); - MD5_Final(md5_dgst, &md5_ctx); - x509_ctx->digest = bi_import(bi_ctx, md5_dgst, MD5_SIZE); - } - else if (x509_ctx->sig_type == SIG_TYPE_SHA1) - { - SHA1_CTX sha_ctx; - uint8_t sha_dgst[SHA1_SIZE]; - SHA1_Init(&sha_ctx); - SHA1_Update(&sha_ctx, &cert[begin_tbs], end_tbs-begin_tbs); - SHA1_Final(sha_dgst, &sha_ctx); - x509_ctx->digest = bi_import(bi_ctx, sha_dgst, SHA1_SIZE); - } - else if (x509_ctx->sig_type == SIG_TYPE_MD2) - { - MD2_CTX md2_ctx; - uint8_t md2_dgst[MD2_SIZE]; - MD2_Init(&md2_ctx); - MD2_Update(&md2_ctx, &cert[begin_tbs], end_tbs-begin_tbs); - MD2_Final(md2_dgst, &md2_ctx); - x509_ctx->digest = bi_import(bi_ctx, md2_dgst, MD2_SIZE); - } - - if (cert[offset] == ASN1_V3_DATA) - { - int suboffset; - - ++offset; - get_asn1_length(cert, &offset); - - if ((suboffset = asn1_find_subjectaltname(cert, offset)) > 0) - { - if (asn1_next_obj(cert, &suboffset, ASN1_OCTET_STRING) > 0) - { - int altlen; - - if ((altlen = asn1_next_obj(cert, - &suboffset, ASN1_SEQUENCE)) > 0) - { - int endalt = suboffset + altlen; - int totalnames = 0; - - while (suboffset < endalt) - { - int type = cert[suboffset++]; - int dnslen = get_asn1_length(cert, &suboffset); - - if (type == ASN1_CONTEXT_DNSNAME) - { - x509_ctx->subject_alt_dnsnames = (char**) - realloc(x509_ctx->subject_alt_dnsnames, - (totalnames + 2) * sizeof(char*)); - x509_ctx->subject_alt_dnsnames[totalnames] = - (char*)malloc(dnslen + 1); - x509_ctx->subject_alt_dnsnames[totalnames+1] = NULL; - memcpy(x509_ctx->subject_alt_dnsnames[totalnames], - cert + suboffset, dnslen); - x509_ctx->subject_alt_dnsnames[ - totalnames][dnslen] = 0; - ++totalnames; - } - - suboffset += dnslen; - } - } - } - } - } - - offset = end_tbs; /* skip the rest of v3 data */ - if (asn1_skip_obj(cert, &offset, ASN1_SEQUENCE) || - asn1_signature(cert, &offset, x509_ctx)) - goto end_cert; -#endif - ret = X509_OK; -end_cert: - if (len) - { - *len = cert_size; - } - - if (ret) - { -#ifdef CONFIG_SSL_FULL_MODE - printf("Error: Invalid X509 ASN.1 file (%s)\n", - x509_display_error(ret)); -#endif - x509_free(x509_ctx); - *ctx = NULL; - } - - return ret; -} - -/** - * Free an X.509 object's resources. - */ -void x509_free(X509_CTX *x509_ctx) -{ - X509_CTX *next; - int i; - - if (x509_ctx == NULL) /* if already null, then don't bother */ - return; - - for (i = 0; i < X509_NUM_DN_TYPES; i++) - { - free(x509_ctx->ca_cert_dn[i]); - free(x509_ctx->cert_dn[i]); - } - - free(x509_ctx->signature); - -#ifdef CONFIG_SSL_CERT_VERIFICATION - if (x509_ctx->digest) - { - bi_free(x509_ctx->rsa_ctx->bi_ctx, x509_ctx->digest); - } - - if (x509_ctx->subject_alt_dnsnames) - { - for (i = 0; x509_ctx->subject_alt_dnsnames[i]; ++i) - free(x509_ctx->subject_alt_dnsnames[i]); - - free(x509_ctx->subject_alt_dnsnames); - } -#endif - - RSA_free(x509_ctx->rsa_ctx); - next = x509_ctx->next; - free(x509_ctx); - x509_free(next); /* clear the chain */ -} - -#ifdef CONFIG_SSL_CERT_VERIFICATION -/** - * Take a signature and decrypt it. - */ -static bigint *sig_verify(BI_CTX *ctx, const uint8_t *sig, int sig_len, - bigint *modulus, bigint *pub_exp) -{ - int i, size; - bigint *decrypted_bi, *dat_bi; - bigint *bir = NULL; - uint8_t *block = (uint8_t *)alloca(sig_len); - - /* decrypt */ - dat_bi = bi_import(ctx, sig, sig_len); - ctx->mod_offset = BIGINT_M_OFFSET; - - /* convert to a normal block */ - decrypted_bi = bi_mod_power2(ctx, dat_bi, modulus, pub_exp); - - bi_export(ctx, decrypted_bi, block, sig_len); - ctx->mod_offset = BIGINT_M_OFFSET; - - i = 10; /* start at the first possible non-padded byte */ - while (block[i++] && i < sig_len); - size = sig_len - i; - - /* get only the bit we want */ - if (size > 0) - { - int len; - const uint8_t *sig_ptr = get_signature(&block[i], &len); - - if (sig_ptr) - { - bir = bi_import(ctx, sig_ptr, len); - } - } - - /* save a few bytes of memory */ - bi_clear_cache(ctx); - return bir; -} - -/** - * Do some basic checks on the certificate chain. - * - * Certificate verification consists of a number of checks: - * - The date of the certificate is after the start date. - * - The date of the certificate is before the finish date. - * - A root certificate exists in the certificate store. - * - That the certificate(s) are not self-signed. - * - The certificate chain is valid. - * - The signature of the certificate is valid. - */ -int x509_verify(const CA_CERT_CTX *ca_cert_ctx, const X509_CTX *cert) -{ - int ret = X509_OK, i = 0; - bigint *cert_sig; - X509_CTX *next_cert = NULL; - BI_CTX *ctx = NULL; - bigint *mod = NULL, *expn = NULL; - int match_ca_cert = 0; - struct timeval tv; - uint8_t is_self_signed = 0; - - if (cert == NULL) - { - ret = X509_VFY_ERROR_NO_TRUSTED_CERT; - goto end_verify; - } - - /* a self-signed certificate that is not in the CA store - use this - to check the signature */ - if (asn1_compare_dn(cert->ca_cert_dn, cert->cert_dn) == 0) - { - is_self_signed = 1; - ctx = cert->rsa_ctx->bi_ctx; - mod = cert->rsa_ctx->m; - expn = cert->rsa_ctx->e; - } - - gettimeofday(&tv, NULL); - - /* check the not before date */ - if (tv.tv_sec < cert->not_before) - { - ret = X509_VFY_ERROR_NOT_YET_VALID; - goto end_verify; - } - - /* check the not after date */ - if (tv.tv_sec > cert->not_after) - { - ret = X509_VFY_ERROR_EXPIRED; - goto end_verify; - } - - next_cert = cert->next; - - /* last cert in the chain - look for a trusted cert */ - if (next_cert == NULL) - { - if (ca_cert_ctx != NULL) - { - /* go thu the CA store */ - while (i < CONFIG_X509_MAX_CA_CERTS && ca_cert_ctx->cert[i]) - { - if (asn1_compare_dn(cert->ca_cert_dn, - ca_cert_ctx->cert[i]->cert_dn) == 0) - { - /* use this CA certificate for signature verification */ - match_ca_cert = 1; - ctx = ca_cert_ctx->cert[i]->rsa_ctx->bi_ctx; - mod = ca_cert_ctx->cert[i]->rsa_ctx->m; - expn = ca_cert_ctx->cert[i]->rsa_ctx->e; - break; - } - - i++; - } - } - - /* couldn't find a trusted cert (& let self-signed errors - be returned) */ - if (!match_ca_cert && !is_self_signed) - { - ret = X509_VFY_ERROR_NO_TRUSTED_CERT; - goto end_verify; - } - } - else if (asn1_compare_dn(cert->ca_cert_dn, next_cert->cert_dn) != 0) - { - /* check the chain */ - ret = X509_VFY_ERROR_INVALID_CHAIN; - goto end_verify; - } - else /* use the next certificate in the chain for signature verify */ - { - ctx = next_cert->rsa_ctx->bi_ctx; - mod = next_cert->rsa_ctx->m; - expn = next_cert->rsa_ctx->e; - } - - /* cert is self signed */ - if (!match_ca_cert && is_self_signed) - { - ret = X509_VFY_ERROR_SELF_SIGNED; - goto end_verify; - } - - /* check the signature */ - cert_sig = sig_verify(ctx, cert->signature, cert->sig_len, - bi_clone(ctx, mod), bi_clone(ctx, expn)); - - if (cert_sig && cert->digest) - { - if (bi_compare(cert_sig, cert->digest) != 0) - ret = X509_VFY_ERROR_BAD_SIGNATURE; - - - bi_free(ctx, cert_sig); - } - else - { - ret = X509_VFY_ERROR_BAD_SIGNATURE; - } - - if (ret) - goto end_verify; - - /* go down the certificate chain using recursion. */ - if (next_cert != NULL) - { - ret = x509_verify(ca_cert_ctx, next_cert); - } - -end_verify: - return ret; -} -#endif - -#if defined (CONFIG_SSL_FULL_MODE) -/** - * Used for diagnostics. - */ -static const char *not_part_of_cert = ""; -void x509_print(const X509_CTX *cert, CA_CERT_CTX *ca_cert_ctx) -{ - if (cert == NULL) - return; - - printf("=== CERTIFICATE ISSUED TO ===\n"); - printf("Common Name (CN):\t\t"); - printf("%s\n", cert->cert_dn[X509_COMMON_NAME] ? - cert->cert_dn[X509_COMMON_NAME] : not_part_of_cert); - - printf("Organization (O):\t\t"); - printf("%s\n", cert->cert_dn[X509_ORGANIZATION] ? - cert->cert_dn[X509_ORGANIZATION] : not_part_of_cert); - - printf("Organizational Unit (OU):\t"); - printf("%s\n", cert->cert_dn[X509_ORGANIZATIONAL_UNIT] ? - cert->cert_dn[X509_ORGANIZATIONAL_UNIT] : not_part_of_cert); - - printf("=== CERTIFICATE ISSUED BY ===\n"); - printf("Common Name (CN):\t\t"); - printf("%s\n", cert->ca_cert_dn[X509_COMMON_NAME] ? - cert->ca_cert_dn[X509_COMMON_NAME] : not_part_of_cert); - - printf("Organization (O):\t\t"); - printf("%s\n", cert->ca_cert_dn[X509_ORGANIZATION] ? - cert->ca_cert_dn[X509_ORGANIZATION] : not_part_of_cert); - - printf("Organizational Unit (OU):\t"); - printf("%s\n", cert->ca_cert_dn[X509_ORGANIZATIONAL_UNIT] ? - cert->ca_cert_dn[X509_ORGANIZATIONAL_UNIT] : not_part_of_cert); - - printf("Not Before:\t\t\t%s", ctime(&cert->not_before)); - printf("Not After:\t\t\t%s", ctime(&cert->not_after)); - printf("RSA bitsize:\t\t\t%d\n", cert->rsa_ctx->num_octets*8); - printf("Sig Type:\t\t\t"); - switch (cert->sig_type) - { - case SIG_TYPE_MD5: - printf("MD5\n"); - break; - case SIG_TYPE_SHA1: - printf("SHA1\n"); - break; - case SIG_TYPE_MD2: - printf("MD2\n"); - break; - default: - printf("Unrecognized: %d\n", cert->sig_type); - break; - } - - if (ca_cert_ctx) - { - printf("Verify:\t\t\t\t%s\n", - x509_display_error(x509_verify(ca_cert_ctx, cert))); - } - -#if 0 - print_blob("Signature", cert->signature, cert->sig_len); - bi_print("Modulus", cert->rsa_ctx->m); - bi_print("Pub Exp", cert->rsa_ctx->e); -#endif - - if (ca_cert_ctx) - { - x509_print(cert->next, ca_cert_ctx); - } - - TTY_FLUSH(); -} - -const char * x509_display_error(int error) -{ - switch (error) - { - case X509_OK: - return "Certificate verify successful"; - - case X509_NOT_OK: - return "X509 not ok"; - - case X509_VFY_ERROR_NO_TRUSTED_CERT: - return "No trusted cert is available"; - - case X509_VFY_ERROR_BAD_SIGNATURE: - return "Bad signature"; - - case X509_VFY_ERROR_NOT_YET_VALID: - return "Cert is not yet valid"; - - case X509_VFY_ERROR_EXPIRED: - return "Cert has expired"; - - case X509_VFY_ERROR_SELF_SIGNED: - return "Cert is self-signed"; - - case X509_VFY_ERROR_INVALID_CHAIN: - return "Chain is invalid (check order of certs)"; - - case X509_VFY_ERROR_UNSUPPORTED_DIGEST: - return "Unsupported digest"; - - case X509_INVALID_PRIV_KEY: - return "Invalid private key"; - - default: - return "Unknown"; - } -} -#endif /* CONFIG_SSL_FULL_MODE */ - -- cgit v1.2.3