diff options
Diffstat (limited to 'libcurl/src/lib/vtls/gskit.c')
| -rw-r--r-- | libcurl/src/lib/vtls/gskit.c | 1069 |
1 files changed, 1069 insertions, 0 deletions
diff --git a/libcurl/src/lib/vtls/gskit.c b/libcurl/src/lib/vtls/gskit.c new file mode 100644 index 0000000..f683c76 --- /dev/null +++ b/libcurl/src/lib/vtls/gskit.c @@ -0,0 +1,1069 @@ +/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "../curl_setup.h"
+
+#ifdef USE_GSKIT
+
+#include <gskssl.h>
+#include <qsoasync.h>
+
+/* Some symbols are undefined/unsupported on OS400 versions < V7R1. */
+#ifndef GSK_SSL_EXTN_SERVERNAME_REQUEST
+#define GSK_SSL_EXTN_SERVERNAME_REQUEST 230
+#endif
+
+#ifndef GSK_TLSV10_CIPHER_SPECS
+#define GSK_TLSV10_CIPHER_SPECS 236
+#endif
+
+#ifndef GSK_TLSV11_CIPHER_SPECS
+#define GSK_TLSV11_CIPHER_SPECS 237
+#endif
+
+#ifndef GSK_TLSV12_CIPHER_SPECS
+#define GSK_TLSV12_CIPHER_SPECS 238
+#endif
+
+#ifndef GSK_PROTOCOL_TLSV11
+#define GSK_PROTOCOL_TLSV11 437
+#endif
+
+#ifndef GSK_PROTOCOL_TLSV12
+#define GSK_PROTOCOL_TLSV12 438
+#endif
+
+#ifndef GSK_FALSE
+#define GSK_FALSE 0
+#endif
+
+#ifndef GSK_TRUE
+#define GSK_TRUE 1
+#endif
+
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#include <curl/curl.h>
+#include "urldata.h"
+#include "sendf.h"
+#include "gskit.h"
+#include "vtls.h"
+#include "connect.h" /* for the connect timeout */
+#include "select.h"
+#include "strequal.h"
+#include "x509asn1.h"
+#include "curl_printf.h"
+
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+
+/* SSL version flags. */
+#define CURL_GSKPROTO_SSLV2 0
+#define CURL_GSKPROTO_SSLV2_MASK (1 << CURL_GSKPROTO_SSLV2)
+#define CURL_GSKPROTO_SSLV3 1
+#define CURL_GSKPROTO_SSLV3_MASK (1 << CURL_GSKPROTO_SSLV3)
+#define CURL_GSKPROTO_TLSV10 2
+#define CURL_GSKPROTO_TLSV10_MASK (1 << CURL_GSKPROTO_TLSV10)
+#define CURL_GSKPROTO_TLSV11 3
+#define CURL_GSKPROTO_TLSV11_MASK (1 << CURL_GSKPROTO_TLSV11)
+#define CURL_GSKPROTO_TLSV12 4
+#define CURL_GSKPROTO_TLSV12_MASK (1 << CURL_GSKPROTO_TLSV12)
+#define CURL_GSKPROTO_LAST 5
+
+
+/* Supported ciphers. */
+typedef struct {
+ const char *name; /* Cipher name. */
+ const char *gsktoken; /* Corresponding token for GSKit String. */
+ unsigned int versions; /* SSL version flags. */
+} gskit_cipher;
+
+static const gskit_cipher ciphertable[] = {
+ { "null-md5", "01",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
+ { "null-sha", "02",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
+ { "exp-rc4-md5", "03",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
+ { "rc4-md5", "04",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
+ { "rc4-sha", "05",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
+ { "exp-rc2-cbc-md5", "06",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK },
+ { "exp-des-cbc-sha", "09",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK },
+ { "des-cbc3-sha", "0A",
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK },
+ { "aes128-sha", "2F",
+ CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
+ CURL_GSKPROTO_TLSV12_MASK },
+ { "aes256-sha", "35",
+ CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
+ CURL_GSKPROTO_TLSV12_MASK },
+ { "null-sha256", "3B", CURL_GSKPROTO_TLSV12_MASK },
+ { "aes128-sha256", "3C", CURL_GSKPROTO_TLSV12_MASK },
+ { "aes256-sha256", "3D", CURL_GSKPROTO_TLSV12_MASK },
+ { "aes128-gcm-sha256",
+ "9C", CURL_GSKPROTO_TLSV12_MASK },
+ { "aes256-gcm-sha384",
+ "9D", CURL_GSKPROTO_TLSV12_MASK },
+ { "rc4-md5", "1", CURL_GSKPROTO_SSLV2_MASK },
+ { "exp-rc4-md5", "2", CURL_GSKPROTO_SSLV2_MASK },
+ { "rc2-md5", "3", CURL_GSKPROTO_SSLV2_MASK },
+ { "exp-rc2-md5", "4", CURL_GSKPROTO_SSLV2_MASK },
+ { "des-cbc-md5", "6", CURL_GSKPROTO_SSLV2_MASK },
+ { "des-cbc3-md5", "7", CURL_GSKPROTO_SSLV2_MASK },
+ { (const char *) NULL, (const char *) NULL, 0 }
+};
+
+
+static bool is_separator(char c)
+{
+ /* Return whether character is a cipher list separator. */
+ switch (c) {
+ case ' ':
+ case '\t':
+ case ':':
+ case ',':
+ case ';':
+ return true;
+ }
+ return false;
+}
+
+
+static CURLcode gskit_status(struct SessionHandle *data, int rc,
+ const char *procname, CURLcode defcode)
+{
+ /* Process GSKit status and map it to a CURLcode. */
+ switch (rc) {
+ case GSK_OK:
+ case GSK_OS400_ASYNCHRONOUS_SOC_INIT:
+ return CURLE_OK;
+ case GSK_KEYRING_OPEN_ERROR:
+ case GSK_OS400_ERROR_NO_ACCESS:
+ return CURLE_SSL_CACERT_BADFILE;
+ case GSK_INSUFFICIENT_STORAGE:
+ return CURLE_OUT_OF_MEMORY;
+ case GSK_ERROR_BAD_V2_CIPHER:
+ case GSK_ERROR_BAD_V3_CIPHER:
+ case GSK_ERROR_NO_CIPHERS:
+ return CURLE_SSL_CIPHER;
+ case GSK_OS400_ERROR_NOT_TRUSTED_ROOT:
+ case GSK_ERROR_CERT_VALIDATION:
+ return CURLE_PEER_FAILED_VERIFICATION;
+ case GSK_OS400_ERROR_TIMED_OUT:
+ return CURLE_OPERATION_TIMEDOUT;
+ case GSK_WOULD_BLOCK:
+ return CURLE_AGAIN;
+ case GSK_OS400_ERROR_NOT_REGISTERED:
+ break;
+ case GSK_ERROR_IO:
+ switch (errno) {
+ case ENOMEM:
+ return CURLE_OUT_OF_MEMORY;
+ default:
+ failf(data, "%s I/O error: %s", procname, strerror(errno));
+ break;
+ }
+ break;
+ default:
+ failf(data, "%s: %s", procname, gsk_strerror(rc));
+ break;
+ }
+ return defcode;
+}
+
+
+static CURLcode set_enum(struct SessionHandle *data, gsk_handle h,
+ GSK_ENUM_ID id, GSK_ENUM_VALUE value, bool unsupported_ok)
+{
+ int rc = gsk_attribute_set_enum(h, id, value);
+
+ switch (rc) {
+ case GSK_OK:
+ return CURLE_OK;
+ case GSK_ERROR_IO:
+ failf(data, "gsk_attribute_set_enum() I/O error: %s", strerror(errno));
+ break;
+ case GSK_ATTRIBUTE_INVALID_ID:
+ if(unsupported_ok)
+ return CURLE_UNSUPPORTED_PROTOCOL;
+ default:
+ failf(data, "gsk_attribute_set_enum(): %s", gsk_strerror(rc));
+ break;
+ }
+ return CURLE_SSL_CONNECT_ERROR;
+}
+
+
+static CURLcode set_buffer(struct SessionHandle *data, gsk_handle h,
+ GSK_BUF_ID id, const char *buffer, bool unsupported_ok)
+{
+ int rc = gsk_attribute_set_buffer(h, id, buffer, 0);
+
+ switch (rc) {
+ case GSK_OK:
+ return CURLE_OK;
+ case GSK_ERROR_IO:
+ failf(data, "gsk_attribute_set_buffer() I/O error: %s", strerror(errno));
+ break;
+ case GSK_ATTRIBUTE_INVALID_ID:
+ if(unsupported_ok)
+ return CURLE_UNSUPPORTED_PROTOCOL;
+ default:
+ failf(data, "gsk_attribute_set_buffer(): %s", gsk_strerror(rc));
+ break;
+ }
+ return CURLE_SSL_CONNECT_ERROR;
+}
+
+
+static CURLcode set_numeric(struct SessionHandle *data,
+ gsk_handle h, GSK_NUM_ID id, int value)
+{
+ int rc = gsk_attribute_set_numeric_value(h, id, value);
+
+ switch (rc) {
+ case GSK_OK:
+ return CURLE_OK;
+ case GSK_ERROR_IO:
+ failf(data, "gsk_attribute_set_numeric_value() I/O error: %s",
+ strerror(errno));
+ break;
+ default:
+ failf(data, "gsk_attribute_set_numeric_value(): %s", gsk_strerror(rc));
+ break;
+ }
+ return CURLE_SSL_CONNECT_ERROR;
+}
+
+
+static CURLcode set_callback(struct SessionHandle *data,
+ gsk_handle h, GSK_CALLBACK_ID id, void *info)
+{
+ int rc = gsk_attribute_set_callback(h, id, info);
+
+ switch (rc) {
+ case GSK_OK:
+ return CURLE_OK;
+ case GSK_ERROR_IO:
+ failf(data, "gsk_attribute_set_callback() I/O error: %s", strerror(errno));
+ break;
+ default:
+ failf(data, "gsk_attribute_set_callback(): %s", gsk_strerror(rc));
+ break;
+ }
+ return CURLE_SSL_CONNECT_ERROR;
+}
+
+
+static CURLcode set_ciphers(struct SessionHandle *data,
+ gsk_handle h, unsigned int *protoflags)
+{
+ const char *cipherlist = data->set.str[STRING_SSL_CIPHER_LIST];
+ const char *clp;
+ const gskit_cipher *ctp;
+ int i;
+ int l;
+ bool unsupported;
+ CURLcode result;
+ struct {
+ char *buf;
+ char *ptr;
+ } ciphers[CURL_GSKPROTO_LAST];
+
+ /* Compile cipher list into GSKit-compatible cipher lists. */
+
+ if(!cipherlist)
+ return CURLE_OK;
+ while(is_separator(*cipherlist)) /* Skip initial separators. */
+ cipherlist++;
+ if(!*cipherlist)
+ return CURLE_OK;
+
+ /* We allocate GSKit buffers of the same size as the input string: since
+ GSKit tokens are always shorter than their cipher names, allocated buffers
+ will always be large enough to accomodate the result. */
+ l = strlen(cipherlist) + 1;
+ memset((char *) ciphers, 0, sizeof ciphers);
+ for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
+ ciphers[i].buf = malloc(l);
+ if(!ciphers[i].buf) {
+ while(i--)
+ free(ciphers[i].buf);
+ return CURLE_OUT_OF_MEMORY;
+ }
+ ciphers[i].ptr = ciphers[i].buf;
+ *ciphers[i].ptr = '\0';
+ }
+
+ /* Process each cipher in input string. */
+ unsupported = FALSE;
+ result = CURLE_OK;
+ for(;;) {
+ for(clp = cipherlist; *cipherlist && !is_separator(*cipherlist);)
+ cipherlist++;
+ l = cipherlist - clp;
+ if(!l)
+ break;
+ /* Search the cipher in our table. */
+ for(ctp = ciphertable; ctp->name; ctp++)
+ if(strnequal(ctp->name, clp, l) && !ctp->name[l])
+ break;
+ if(!ctp->name) {
+ failf(data, "Unknown cipher %.*s", l, clp);
+ result = CURLE_SSL_CIPHER;
+ }
+ else {
+ unsupported |= !(ctp->versions & (CURL_GSKPROTO_SSLV2_MASK |
+ CURL_GSKPROTO_SSLV3_MASK | CURL_GSKPROTO_TLSV10_MASK));
+ for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
+ if(ctp->versions & (1 << i)) {
+ strcpy(ciphers[i].ptr, ctp->gsktoken);
+ ciphers[i].ptr += strlen(ctp->gsktoken);
+ }
+ }
+ }
+
+ /* Advance to next cipher name or end of string. */
+ while(is_separator(*cipherlist))
+ cipherlist++;
+ }
+
+ /* Disable protocols with empty cipher lists. */
+ for(i = 0; i < CURL_GSKPROTO_LAST; i++) {
+ if(!(*protoflags & (1 << i)) || !ciphers[i].buf[0]) {
+ *protoflags &= ~(1 << i);
+ ciphers[i].buf[0] = '\0';
+ }
+ }
+
+ /* Try to set-up TLSv1.1 and TLSv2.1 ciphers. */
+ if(*protoflags & CURL_GSKPROTO_TLSV11_MASK) {
+ result = set_buffer(data, h, GSK_TLSV11_CIPHER_SPECS,
+ ciphers[CURL_GSKPROTO_TLSV11].buf, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ result = CURLE_OK;
+ if(unsupported) {
+ failf(data, "TLSv1.1-only ciphers are not yet supported");
+ result = CURLE_SSL_CIPHER;
+ }
+ }
+ }
+ if(!result && (*protoflags & CURL_GSKPROTO_TLSV12_MASK)) {
+ result = set_buffer(data, h, GSK_TLSV12_CIPHER_SPECS,
+ ciphers[CURL_GSKPROTO_TLSV12].buf, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ result = CURLE_OK;
+ if(unsupported) {
+ failf(data, "TLSv1.2-only ciphers are not yet supported");
+ result = CURLE_SSL_CIPHER;
+ }
+ }
+ }
+
+ /* Try to set-up TLSv1.0 ciphers. If not successful, concatenate them to
+ the SSLv3 ciphers. OS/400 prior to version 7.1 will understand it. */
+ if(!result && (*protoflags & CURL_GSKPROTO_TLSV10_MASK)) {
+ result = set_buffer(data, h, GSK_TLSV10_CIPHER_SPECS,
+ ciphers[CURL_GSKPROTO_TLSV10].buf, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ result = CURLE_OK;
+ strcpy(ciphers[CURL_GSKPROTO_SSLV3].ptr,
+ ciphers[CURL_GSKPROTO_TLSV10].ptr);
+ }
+ }
+
+ /* Set-up other ciphers. */
+ if(!result && (*protoflags & CURL_GSKPROTO_SSLV3_MASK))
+ result = set_buffer(data, h, GSK_V3_CIPHER_SPECS,
+ ciphers[CURL_GSKPROTO_SSLV3].buf, FALSE);
+ if(!result && (*protoflags & CURL_GSKPROTO_SSLV2_MASK))
+ result = set_buffer(data, h, GSK_V2_CIPHER_SPECS,
+ ciphers[CURL_GSKPROTO_SSLV2].buf, FALSE);
+
+ /* Clean-up. */
+ for(i = 0; i < CURL_GSKPROTO_LAST; i++)
+ free(ciphers[i].buf);
+
+ return result;
+}
+
+
+CURL_STATIC int Curl_gskit_init(void)
+{
+ /* No initialisation needed. */
+
+ return 1;
+}
+
+
+CURL_STATIC void Curl_gskit_cleanup(void)
+{
+ /* Nothing to do. */
+}
+
+
+static CURLcode init_environment(struct SessionHandle *data,
+ gsk_handle *envir, const char *appid,
+ const char *file, const char *label,
+ const char *password)
+{
+ int rc;
+ CURLcode result;
+ gsk_handle h;
+
+ /* Creates the GSKit environment. */
+
+ rc = gsk_environment_open(&h);
+ switch (rc) {
+ case GSK_OK:
+ break;
+ case GSK_INSUFFICIENT_STORAGE:
+ return CURLE_OUT_OF_MEMORY;
+ default:
+ failf(data, "gsk_environment_open(): %s", gsk_strerror(rc));
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+
+ result = set_enum(data, h, GSK_SESSION_TYPE, GSK_CLIENT_SESSION, FALSE);
+ if(!result && appid)
+ result = set_buffer(data, h, GSK_OS400_APPLICATION_ID, appid, FALSE);
+ if(!result && file)
+ result = set_buffer(data, h, GSK_KEYRING_FILE, file, FALSE);
+ if(!result && label)
+ result = set_buffer(data, h, GSK_KEYRING_LABEL, label, FALSE);
+ if(!result && password)
+ result = set_buffer(data, h, GSK_KEYRING_PW, password, FALSE);
+
+ if(!result) {
+ /* Locate CAs, Client certificate and key according to our settings.
+ Note: this call may be blocking for some tenths of seconds. */
+ result = gskit_status(data, gsk_environment_init(h),
+ "gsk_environment_init()", CURLE_SSL_CERTPROBLEM);
+ if(!result) {
+ *envir = h;
+ return result;
+ }
+ }
+ /* Error: rollback. */
+ gsk_environment_close(&h);
+ return result;
+}
+
+
+static void cancel_async_handshake(struct connectdata *conn, int sockindex)
+{
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ Qso_OverlappedIO_t cstat;
+
+ if(QsoCancelOperation(conn->sock[sockindex], 0) > 0)
+ QsoWaitForIOCompletion(connssl->iocport, &cstat, (struct timeval *) NULL);
+}
+
+
+static void close_async_handshake(struct ssl_connect_data *connssl)
+{
+ QsoDestroyIOCompletionPort(connssl->iocport);
+ connssl->iocport = -1;
+}
+
+
+static void close_one(struct ssl_connect_data *conn,
+ struct SessionHandle *data)
+{
+ if(conn->handle) {
+ gskit_status(data, gsk_secure_soc_close(&conn->handle),
+ "gsk_secure_soc_close()", 0);
+ conn->handle = (gsk_handle) NULL;
+ }
+ if(conn->iocport >= 0)
+ close_async_handshake(conn);
+}
+
+
+static ssize_t gskit_send(struct connectdata *conn, int sockindex,
+ const void *mem, size_t len, CURLcode *curlcode)
+{
+ struct SessionHandle *data = conn->data;
+ CURLcode cc;
+ int written;
+
+ cc = gskit_status(data,
+ gsk_secure_soc_write(conn->ssl[sockindex].handle,
+ (char *) mem, (int) len, &written),
+ "gsk_secure_soc_write()", CURLE_SEND_ERROR);
+ if(cc != CURLE_OK) {
+ *curlcode = cc;
+ written = -1;
+ }
+ return (ssize_t) written; /* number of bytes */
+}
+
+
+static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
+ size_t buffersize, CURLcode *curlcode)
+{
+ struct SessionHandle *data = conn->data;
+ int buffsize;
+ int nread;
+ CURLcode cc;
+
+ buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
+ cc = gskit_status(data, gsk_secure_soc_read(conn->ssl[num].handle,
+ buf, buffsize, &nread),
+ "gsk_secure_soc_read()", CURLE_RECV_ERROR);
+ if(cc != CURLE_OK) {
+ *curlcode = cc;
+ nread = -1;
+ }
+ return (ssize_t) nread;
+}
+
+
+static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ gsk_handle envir;
+ CURLcode result;
+ int rc;
+ char *keyringfile;
+ char *keyringpwd;
+ char *keyringlabel;
+ char *sni;
+ unsigned int protoflags;
+ long timeout;
+ Qso_OverlappedIO_t commarea;
+
+ /* Create SSL environment, start (preferably asynchronous) handshake. */
+
+ connssl->handle = (gsk_handle) NULL;
+ connssl->iocport = -1;
+
+ /* GSKit supports two ways of specifying an SSL context: either by
+ * application identifier (that should have been defined at the system
+ * level) or by keyring file, password and certificate label.
+ * Local certificate name (CURLOPT_SSLCERT) is used to hold either the
+ * application identifier of the certificate label.
+ * Key password (CURLOPT_KEYPASSWD) holds the keyring password.
+ * It is not possible to have different keyrings for the CAs and the
+ * local certificate. We thus use the CA file (CURLOPT_CAINFO) to identify
+ * the keyring file.
+ * If no key password is given and the keyring is the system keyring,
+ * application identifier mode is tried first, as recommended in IBM doc.
+ */
+
+ keyringfile = data->set.str[STRING_SSL_CAFILE];
+ keyringpwd = data->set.str[STRING_KEY_PASSWD];
+ keyringlabel = data->set.str[STRING_CERT];
+ envir = (gsk_handle) NULL;
+
+ if(keyringlabel && *keyringlabel && !keyringpwd &&
+ !strcmp(keyringfile, CURL_CA_BUNDLE)) {
+ /* Try application identifier mode. */
+ init_environment(data, &envir, keyringlabel, (const char *) NULL,
+ (const char *) NULL, (const char *) NULL);
+ }
+
+ if(!envir) {
+ /* Use keyring mode. */
+ result = init_environment(data, &envir, (const char *) NULL,
+ keyringfile, keyringlabel, keyringpwd);
+ if(result)
+ return result;
+ }
+
+ /* Create secure session. */
+ result = gskit_status(data, gsk_secure_soc_open(envir, &connssl->handle),
+ "gsk_secure_soc_open()", CURLE_SSL_CONNECT_ERROR);
+ gsk_environment_close(&envir);
+ if(result)
+ return result;
+
+ /* Determine which SSL/TLS version should be enabled. */
+ protoflags = CURL_GSKPROTO_TLSV10_MASK | CURL_GSKPROTO_TLSV11_MASK |
+ CURL_GSKPROTO_TLSV12_MASK;
+ sni = conn->host.name;
+ switch (data->set.ssl.version) {
+ case CURL_SSLVERSION_SSLv2:
+ protoflags = CURL_GSKPROTO_SSLV2_MASK;
+ sni = (char *) NULL;
+ break;
+ case CURL_SSLVERSION_SSLv3:
+ protoflags = CURL_GSKPROTO_SSLV3_MASK;
+ sni = (char *) NULL;
+ break;
+ case CURL_SSLVERSION_TLSv1:
+ protoflags = CURL_GSKPROTO_TLSV10_MASK |
+ CURL_GSKPROTO_TLSV11_MASK | CURL_GSKPROTO_TLSV12_MASK;
+ break;
+ case CURL_SSLVERSION_TLSv1_0:
+ protoflags = CURL_GSKPROTO_TLSV10_MASK;
+ break;
+ case CURL_SSLVERSION_TLSv1_1:
+ protoflags = CURL_GSKPROTO_TLSV11_MASK;
+ break;
+ case CURL_SSLVERSION_TLSv1_2:
+ protoflags = CURL_GSKPROTO_TLSV12_MASK;
+ break;
+ }
+
+ /* Process SNI. Ignore if not supported (on OS400 < V7R1). */
+ if(sni) {
+ result = set_buffer(data, connssl->handle,
+ GSK_SSL_EXTN_SERVERNAME_REQUEST, sni, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL)
+ result = CURLE_OK;
+ }
+
+ /* Set session parameters. */
+ if(!result) {
+ /* Compute the handshake timeout. Since GSKit granularity is 1 second,
+ we round up the required value. */
+ timeout = Curl_timeleft(data, NULL, TRUE);
+ if(timeout < 0)
+ result = CURLE_OPERATION_TIMEDOUT;
+ else
+ result = set_numeric(data, connssl->handle, GSK_HANDSHAKE_TIMEOUT,
+ (timeout + 999) / 1000);
+ }
+ if(!result)
+ result = set_numeric(data, connssl->handle, GSK_FD, conn->sock[sockindex]);
+ if(!result)
+ result = set_ciphers(data, connssl->handle, &protoflags);
+ if(!protoflags) {
+ failf(data, "No SSL protocol/cipher combination enabled");
+ result = CURLE_SSL_CIPHER;
+ }
+ if(!result)
+ result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV2,
+ (protoflags & CURL_GSKPROTO_SSLV2_MASK)?
+ GSK_PROTOCOL_SSLV2_ON: GSK_PROTOCOL_SSLV2_OFF, FALSE);
+ if(!result)
+ result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV3,
+ (protoflags & CURL_GSKPROTO_SSLV3_MASK)?
+ GSK_PROTOCOL_SSLV3_ON: GSK_PROTOCOL_SSLV3_OFF, FALSE);
+ if(!result)
+ result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV1,
+ (protoflags & CURL_GSKPROTO_TLSV10_MASK)?
+ GSK_PROTOCOL_TLSV1_ON: GSK_PROTOCOL_TLSV1_OFF, FALSE);
+ if(!result) {
+ result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV11,
+ (protoflags & CURL_GSKPROTO_TLSV11_MASK)?
+ GSK_TRUE: GSK_FALSE, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ result = CURLE_OK;
+ if(protoflags == CURL_GSKPROTO_TLSV11_MASK) {
+ failf(data, "TLS 1.1 not yet supported");
+ result = CURLE_SSL_CIPHER;
+ }
+ }
+ }
+ if(!result) {
+ result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV12,
+ (protoflags & CURL_GSKPROTO_TLSV12_MASK)?
+ GSK_TRUE: GSK_FALSE, TRUE);
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ result = CURLE_OK;
+ if(protoflags == CURL_GSKPROTO_TLSV12_MASK) {
+ failf(data, "TLS 1.2 not yet supported");
+ result = CURLE_SSL_CIPHER;
+ }
+ }
+ }
+ if(!result)
+ result = set_enum(data, connssl->handle, GSK_SERVER_AUTH_TYPE,
+ data->set.ssl.verifypeer? GSK_SERVER_AUTH_FULL:
+ GSK_SERVER_AUTH_PASSTHRU, FALSE);
+
+ if(!result) {
+ /* Start handshake. Try asynchronous first. */
+ memset(&commarea, 0, sizeof commarea);
+ connssl->iocport = QsoCreateIOCompletionPort();
+ if(connssl->iocport != -1) {
+ result = gskit_status(data,
+ gsk_secure_soc_startInit(connssl->handle,
+ connssl->iocport,
+ &commarea),
+ "gsk_secure_soc_startInit()",
+ CURLE_SSL_CONNECT_ERROR);
+ if(!result) {
+ connssl->connecting_state = ssl_connect_2;
+ return CURLE_OK;
+ }
+ else
+ close_async_handshake(connssl);
+ }
+ else if(errno != ENOBUFS)
+ result = gskit_status(data, GSK_ERROR_IO,
+ "QsoCreateIOCompletionPort()", 0);
+ else {
+ /* No more completion port available. Use synchronous IO. */
+ result = gskit_status(data, gsk_secure_soc_init(connssl->handle),
+ "gsk_secure_soc_init()", CURLE_SSL_CONNECT_ERROR);
+ if(!result) {
+ connssl->connecting_state = ssl_connect_3;
+ return CURLE_OK;
+ }
+ }
+ }
+
+ /* Error: rollback. */
+ close_one(connssl, data);
+ return result;
+}
+
+
+static CURLcode gskit_connect_step2(struct connectdata *conn, int sockindex,
+ bool nonblocking)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ Qso_OverlappedIO_t cstat;
+ long timeout_ms;
+ struct timeval stmv;
+ CURLcode result;
+
+ /* Poll or wait for end of SSL asynchronous handshake. */
+
+ for(;;) {
+ timeout_ms = nonblocking? 0: Curl_timeleft(data, NULL, TRUE);
+ if(timeout_ms < 0)
+ timeout_ms = 0;
+ stmv.tv_sec = timeout_ms / 1000;
+ stmv.tv_usec = (timeout_ms - stmv.tv_sec * 1000) * 1000;
+ switch (QsoWaitForIOCompletion(connssl->iocport, &cstat, &stmv)) {
+ case 1: /* Operation complete. */
+ break;
+ case -1: /* An error occurred: handshake still in progress. */
+ if(errno == EINTR) {
+ if(nonblocking)
+ return CURLE_OK;
+ continue; /* Retry. */
+ }
+ if(errno != ETIME) {
+ failf(data, "QsoWaitForIOCompletion() I/O error: %s", strerror(errno));
+ cancel_async_handshake(conn, sockindex);
+ close_async_handshake(connssl);
+ return CURLE_SSL_CONNECT_ERROR;
+ }
+ /* FALL INTO... */
+ case 0: /* Handshake in progress, timeout occurred. */
+ if(nonblocking)
+ return CURLE_OK;
+ cancel_async_handshake(conn, sockindex);
+ close_async_handshake(connssl);
+ return CURLE_OPERATION_TIMEDOUT;
+ }
+ break;
+ }
+ result = gskit_status(data, cstat.returnValue, "SSL handshake",
+ CURLE_SSL_CONNECT_ERROR);
+ if(!result)
+ connssl->connecting_state = ssl_connect_3;
+ close_async_handshake(connssl);
+ return result;
+}
+
+
+static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ const gsk_cert_data_elem *cdev;
+ int cdec;
+ const gsk_cert_data_elem *p;
+ const char *cert = (const char *) NULL;
+ const char *certend;
+ const char *ptr;
+ int i;
+ CURLcode result;
+
+ /* SSL handshake done: gather certificate info and verify host. */
+
+ if(gskit_status(data, gsk_attribute_get_cert_info(connssl->handle,
+ GSK_PARTNER_CERT_INFO,
+ &cdev, &cdec),
+ "gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
+ CURLE_OK) {
+ infof(data, "Server certificate:\n");
+ p = cdev;
+ for(i = 0; i++ < cdec; p++)
+ switch (p->cert_data_id) {
+ case CERT_BODY_DER:
+ cert = p->cert_data_p;
+ certend = cert + cdev->cert_data_l;
+ break;
+ case CERT_DN_PRINTABLE:
+ infof(data, "\t subject: %.*s\n", p->cert_data_l, p->cert_data_p);
+ break;
+ case CERT_ISSUER_DN_PRINTABLE:
+ infof(data, "\t issuer: %.*s\n", p->cert_data_l, p->cert_data_p);
+ break;
+ case CERT_VALID_FROM:
+ infof(data, "\t start date: %.*s\n", p->cert_data_l, p->cert_data_p);
+ break;
+ case CERT_VALID_TO:
+ infof(data, "\t expire date: %.*s\n", p->cert_data_l, p->cert_data_p);
+ break;
+ }
+ }
+
+ /* Verify host. */
+ result = Curl_verifyhost(conn, cert, certend);
+ if(result)
+ return result;
+
+ /* The only place GSKit can get the whole CA chain is a validation
+ callback where no user data pointer is available. Therefore it's not
+ possible to copy this chain into our structures for CAINFO.
+ However the server certificate may be available, thus we can return
+ info about it. */
+ if(data->set.ssl.certinfo) {
+ result = Curl_ssl_init_certinfo(data, 1);
+ if(result)
+ return result;
+
+ if(cert) {
+ result = Curl_extract_certinfo(conn, 0, cert, certend);
+ if(result)
+ return result;
+ }
+ }
+
+ /* Check pinned public key. */
+ ptr = data->set.str[STRING_SSL_PINNEDPUBLICKEY];
+ if(!result && ptr) {
+ curl_X509certificate x509;
+ curl_asn1Element *p;
+
+ if(!cert)
+ return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
+ Curl_parseX509(&x509, cert, certend);
+ p = &x509.subjectPublicKeyInfo;
+ result = Curl_pin_peer_pubkey(ptr, p->header, p->end - p->header);
+ if(result) {
+ failf(data, "SSL: public key does not match pinned public key!");
+ return result;
+ }
+ }
+
+ connssl->connecting_state = ssl_connect_done;
+ return CURLE_OK;
+}
+
+
+static CURLcode gskit_connect_common(struct connectdata *conn, int sockindex,
+ bool nonblocking, bool *done)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ long timeout_ms;
+ Qso_OverlappedIO_t cstat;
+ CURLcode result = CURLE_OK;
+
+ *done = connssl->state == ssl_connection_complete;
+ if(*done)
+ return CURLE_OK;
+
+ /* Step 1: create session, start handshake. */
+ if(connssl->connecting_state == ssl_connect_1) {
+ /* check allowed time left */
+ timeout_ms = Curl_timeleft(data, NULL, TRUE);
+
+ if(timeout_ms < 0) {
+ /* no need to continue if time already is up */
+ failf(data, "SSL connection timeout");
+ result = CURLE_OPERATION_TIMEDOUT;
+ }
+ else
+ result = gskit_connect_step1(conn, sockindex);
+ }
+
+ /* Step 2: check if handshake is over. */
+ if(!result && connssl->connecting_state == ssl_connect_2) {
+ /* check allowed time left */
+ timeout_ms = Curl_timeleft(data, NULL, TRUE);
+
+ if(timeout_ms < 0) {
+ /* no need to continue if time already is up */
+ failf(data, "SSL connection timeout");
+ result = CURLE_OPERATION_TIMEDOUT;
+ }
+ else
+ result = gskit_connect_step2(conn, sockindex, nonblocking);
+ }
+
+ /* Step 3: gather certificate info, verify host. */
+ if(!result && connssl->connecting_state == ssl_connect_3)
+ result = gskit_connect_step3(conn, sockindex);
+
+ if(result)
+ close_one(connssl, data);
+ else if(connssl->connecting_state == ssl_connect_done) {
+ connssl->state = ssl_connection_complete;
+ connssl->connecting_state = ssl_connect_1;
+ conn->recv[sockindex] = gskit_recv;
+ conn->send[sockindex] = gskit_send;
+ *done = TRUE;
+ }
+
+ return result;
+}
+
+
+CURL_STATIC CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
+ int sockindex,
+ bool *done)
+{
+ CURLcode result;
+
+ result = gskit_connect_common(conn, sockindex, TRUE, done);
+ if(*done || result)
+ conn->ssl[sockindex].connecting_state = ssl_connect_1;
+ return result;
+}
+
+
+CURL_STATIC CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
+{
+ CURLcode result;
+ bool done;
+
+ conn->ssl[sockindex].connecting_state = ssl_connect_1;
+ result = gskit_connect_common(conn, sockindex, FALSE, &done);
+ if(result)
+ return result;
+
+ DEBUGASSERT(done);
+
+ return CURLE_OK;
+}
+
+
+CURL_STATIC void Curl_gskit_close(struct connectdata *conn, int sockindex)
+{
+ struct SessionHandle *data = conn->data;
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+
+ if(connssl->use)
+ close_one(connssl, data);
+}
+
+
+CURL_STATIC int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
+{
+ struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+ struct SessionHandle *data = conn->data;
+ ssize_t nread;
+ int what;
+ int rc;
+ char buf[120];
+
+ if(!connssl->handle)
+ return 0;
+
+ if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
+ return 0;
+
+ close_one(connssl, data);
+ rc = 0;
+ what = Curl_socket_ready(conn->sock[sockindex],
+ CURL_SOCKET_BAD, SSL_SHUTDOWN_TIMEOUT);
+
+ for(;;) {
+ if(what < 0) {
+ /* anything that gets here is fatally bad */
+ failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
+ rc = -1;
+ break;
+ }
+
+ if(!what) { /* timeout */
+ failf(data, "SSL shutdown timeout");
+ break;
+ }
+
+ /* Something to read, let's do it and hope that it is the close
+ notify alert from the server. No way to gsk_secure_soc_read() now, so
+ use read(). */
+
+ nread = read(conn->sock[sockindex], buf, sizeof(buf));
+
+ if(nread < 0) {
+ failf(data, "read: %s", strerror(errno));
+ rc = -1;
+ }
+
+ if(nread <= 0)
+ break;
+
+ what = Curl_socket_ready(conn->sock[sockindex], CURL_SOCKET_BAD, 0);
+ }
+
+ return rc;
+}
+
+
+CURL_STATIC size_t Curl_gskit_version(char *buffer, size_t size)
+{
+ strncpy(buffer, "GSKit", size);
+ return strlen(buffer);
+}
+
+
+CURL_STATIC int Curl_gskit_check_cxn(struct connectdata *cxn)
+{
+ int err;
+ int errlen;
+
+ /* The only thing that can be tested here is at the socket level. */
+
+ if(!cxn->ssl[FIRSTSOCKET].handle)
+ return 0; /* connection has been closed */
+
+ err = 0;
+ errlen = sizeof err;
+
+ if(getsockopt(cxn->sock[FIRSTSOCKET], SOL_SOCKET, SO_ERROR,
+ (unsigned char *) &err, &errlen) ||
+ errlen != sizeof err || err)
+ return 0; /* connection has been closed */
+
+ return -1; /* connection status unknown */
+}
+
+#endif /* USE_GSKIT */
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