diff options
Diffstat (limited to 'libcurl/src/lib/ldap.c')
| -rw-r--r-- | libcurl/src/lib/ldap.c | 1013 |
1 files changed, 1013 insertions, 0 deletions
diff --git a/libcurl/src/lib/ldap.c b/libcurl/src/lib/ldap.c new file mode 100644 index 0000000..4d91282 --- /dev/null +++ b/libcurl/src/lib/ldap.c @@ -0,0 +1,1013 @@ +/*************************************************************************** + * _ _ ____ _ + * 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" + +#if !defined(CURL_DISABLE_LDAP) && !defined(USE_OPENLDAP) + +/* + * Notice that USE_OPENLDAP is only a source code selection switch. When + * libcurl is built with USE_OPENLDAP defined the libcurl source code that + * gets compiled is the code from openldap.c, otherwise the code that gets + * compiled is the code from ldap.c. + * + * When USE_OPENLDAP is defined a recent version of the OpenLDAP library + * might be required for compilation and runtime. In order to use ancient + * OpenLDAP library versions, USE_OPENLDAP shall not be defined. + */ + +#ifdef USE_WIN32_LDAP /* Use Windows LDAP implementation. */ +# include <winldap.h> +# ifndef LDAP_VENDOR_NAME +# error Your Platform SDK is NOT sufficient for LDAP support! \ + Update your Platform SDK, or disable LDAP support! +# else +# include <winber.h> +# endif +#else +# define LDAP_DEPRECATED 1 /* Be sure ldap_init() is defined. */ +# ifdef HAVE_LBER_H +# include <lber.h> +# endif +# include <ldap.h> +# if (defined(HAVE_LDAP_SSL) && defined(HAVE_LDAP_SSL_H)) +# include <ldap_ssl.h> +# endif /* HAVE_LDAP_SSL && HAVE_LDAP_SSL_H */ +#endif + +/* These are macros in both <wincrypt.h> (in above <winldap.h>) and typedefs + * in BoringSSL's <openssl/x509.h> + */ +#ifdef HAVE_BORINGSSL +# undef X509_NAME +# undef X509_CERT_PAIR +# undef X509_EXTENSIONS +#endif + +#include "urldata.h" +#include <curl/curl.h> +#include "sendf.h" +#include "escape.h" +#include "progress.h" +#include "transfer.h" +#include "strequal.h" +#include "strtok.h" +#include "curl_ldap.h" +#include "curl_multibyte.h" +#include "curl_base64.h" +#include "rawstr.h" +#include "connect.h" +#include "curl_printf.h" + +/* The last #include files should be: */ +#include "curl_memory.h" +#include "memdebug.h" + +#ifndef HAVE_LDAP_URL_PARSE + +/* Use our own implementation. */ + +typedef struct { + char *lud_host; + int lud_port; +#if defined(USE_WIN32_LDAP) + TCHAR *lud_dn; + TCHAR **lud_attrs; +#else + char *lud_dn; + char **lud_attrs; +#endif + int lud_scope; +#if defined(USE_WIN32_LDAP) + TCHAR *lud_filter; +#else + char *lud_filter; +#endif + char **lud_exts; + size_t lud_attrs_dups; /* how many were dup'ed, this field is not in the + "real" struct so can only be used in code + without HAVE_LDAP_URL_PARSE defined */ +} CURL_LDAPURLDesc; + +#undef LDAPURLDesc +#define LDAPURLDesc CURL_LDAPURLDesc + +static int _ldap_url_parse (const struct connectdata *conn, + LDAPURLDesc **ludp); +static void _ldap_free_urldesc (LDAPURLDesc *ludp); + +#undef ldap_free_urldesc +#define ldap_free_urldesc _ldap_free_urldesc +#endif + +#ifdef DEBUG_LDAP + #define LDAP_TRACE(x) do { \ + _ldap_trace ("%u: ", __LINE__); \ + _ldap_trace x; \ + } WHILE_FALSE + + static void _ldap_trace (const char *fmt, ...); +#else + #define LDAP_TRACE(x) Curl_nop_stmt +#endif + + +static CURLcode Curl_ldap(struct connectdata *conn, bool *done); + +/* + * LDAP protocol handler. + */ + +const struct Curl_handler Curl_handler_ldap = { + "LDAP", /* scheme */ + ZERO_NULL, /* setup_connection */ + Curl_ldap, /* do_it */ + ZERO_NULL, /* done */ + ZERO_NULL, /* do_more */ + ZERO_NULL, /* connect_it */ + ZERO_NULL, /* connecting */ + ZERO_NULL, /* doing */ + ZERO_NULL, /* proto_getsock */ + ZERO_NULL, /* doing_getsock */ + ZERO_NULL, /* domore_getsock */ + ZERO_NULL, /* perform_getsock */ + ZERO_NULL, /* disconnect */ + ZERO_NULL, /* readwrite */ + PORT_LDAP, /* defport */ + CURLPROTO_LDAP, /* protocol */ + PROTOPT_NONE /* flags */ +}; + +#ifdef HAVE_LDAP_SSL +/* + * LDAPS protocol handler. + */ + +const struct Curl_handler Curl_handler_ldaps = { + "LDAPS", /* scheme */ + ZERO_NULL, /* setup_connection */ + Curl_ldap, /* do_it */ + ZERO_NULL, /* done */ + ZERO_NULL, /* do_more */ + ZERO_NULL, /* connect_it */ + ZERO_NULL, /* connecting */ + ZERO_NULL, /* doing */ + ZERO_NULL, /* proto_getsock */ + ZERO_NULL, /* doing_getsock */ + ZERO_NULL, /* domore_getsock */ + ZERO_NULL, /* perform_getsock */ + ZERO_NULL, /* disconnect */ + ZERO_NULL, /* readwrite */ + PORT_LDAPS, /* defport */ + CURLPROTO_LDAPS, /* protocol */ + PROTOPT_SSL /* flags */ +}; +#endif + + +static CURLcode Curl_ldap(struct connectdata *conn, bool *done) +{ + CURLcode result = CURLE_OK; + int rc = 0; + LDAP *server = NULL; + LDAPURLDesc *ludp = NULL; + LDAPMessage *ldapmsg = NULL; + LDAPMessage *entryIterator; + int num = 0; + struct SessionHandle *data=conn->data; + int ldap_proto = LDAP_VERSION3; + int ldap_ssl = 0; + char *val_b64 = NULL; + size_t val_b64_sz = 0; + curl_off_t dlsize = 0; +#ifdef LDAP_OPT_NETWORK_TIMEOUT + struct timeval ldap_timeout = {10, 0}; /* 10 sec connection/search timeout */ +#endif +#if defined(USE_WIN32_LDAP) + TCHAR *host = NULL; + TCHAR *user = NULL; + TCHAR *passwd = NULL; +#else + char *host = NULL; + char *user = NULL; + char *passwd = NULL; +#endif + + *done = TRUE; /* unconditionally */ + infof(data, "LDAP local: LDAP Vendor = %s ; LDAP Version = %d\n", + LDAP_VENDOR_NAME, LDAP_VENDOR_VERSION); + infof(data, "LDAP local: %s\n", data->change.url); + +#ifdef HAVE_LDAP_URL_PARSE + rc = ldap_url_parse(data->change.url, &ludp); +#else + rc = _ldap_url_parse(conn, &ludp); +#endif + if(rc != 0) { + failf(data, "LDAP local: %s", ldap_err2string(rc)); + result = CURLE_LDAP_INVALID_URL; + goto quit; + } + + /* Get the URL scheme ( either ldap or ldaps ) */ + if(conn->given->flags & PROTOPT_SSL) + ldap_ssl = 1; + infof(data, "LDAP local: trying to establish %s connection\n", + ldap_ssl ? "encrypted" : "cleartext"); + +#if defined(USE_WIN32_LDAP) + host = Curl_convert_UTF8_to_tchar(conn->host.name); + if(!host) { + result = CURLE_OUT_OF_MEMORY; + + goto quit; + } + + if(conn->bits.user_passwd) { + user = Curl_convert_UTF8_to_tchar(conn->user); + passwd = Curl_convert_UTF8_to_tchar(conn->passwd); + if(!user || !passwd) { + result = CURLE_OUT_OF_MEMORY; + + goto quit; + } + } +#else + host = conn->host.name; + + if(conn->bits.user_passwd) { + user = conn->user; + passwd = conn->passwd; + } +#endif + +#ifdef LDAP_OPT_NETWORK_TIMEOUT + ldap_set_option(NULL, LDAP_OPT_NETWORK_TIMEOUT, &ldap_timeout); +#endif + ldap_set_option(NULL, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto); + + if(ldap_ssl) { +#ifdef HAVE_LDAP_SSL +#ifdef USE_WIN32_LDAP + /* Win32 LDAP SDK doesn't support insecure mode without CA! */ + server = ldap_sslinit(host, (int)conn->port, 1); + ldap_set_option(server, LDAP_OPT_SSL, LDAP_OPT_ON); +#else + int ldap_option; + char* ldap_ca = data->set.str[STRING_SSL_CAFILE]; +#if defined(CURL_HAS_NOVELL_LDAPSDK) + rc = ldapssl_client_init(NULL, NULL); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ldapssl_client_init %s", ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + if(data->set.ssl.verifypeer) { + /* Novell SDK supports DER or BASE64 files. */ + int cert_type = LDAPSSL_CERT_FILETYPE_B64; + if((data->set.str[STRING_CERT_TYPE]) && + (Curl_raw_equal(data->set.str[STRING_CERT_TYPE], "DER"))) + cert_type = LDAPSSL_CERT_FILETYPE_DER; + if(!ldap_ca) { + failf(data, "LDAP local: ERROR %s CA cert not set!", + (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM")); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + infof(data, "LDAP local: using %s CA cert '%s'\n", + (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"), + ldap_ca); + rc = ldapssl_add_trusted_cert(ldap_ca, cert_type); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR setting %s CA cert: %s", + (cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"), + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + ldap_option = LDAPSSL_VERIFY_SERVER; + } + else + ldap_option = LDAPSSL_VERIFY_NONE; + rc = ldapssl_set_verify_mode(ldap_option); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR setting cert verify mode: %s", + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + server = ldapssl_init(host, (int)conn->port, 1); + if(server == NULL) { + failf(data, "LDAP local: Cannot connect to %s:%ld", + conn->host.dispname, conn->port); + result = CURLE_COULDNT_CONNECT; + goto quit; + } +#elif defined(LDAP_OPT_X_TLS) + if(data->set.ssl.verifypeer) { + /* OpenLDAP SDK supports BASE64 files. */ + if((data->set.str[STRING_CERT_TYPE]) && + (!Curl_raw_equal(data->set.str[STRING_CERT_TYPE], "PEM"))) { + failf(data, "LDAP local: ERROR OpenLDAP only supports PEM cert-type!"); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + if(!ldap_ca) { + failf(data, "LDAP local: ERROR PEM CA cert not set!"); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + infof(data, "LDAP local: using PEM CA cert: %s\n", ldap_ca); + rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTFILE, ldap_ca); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR setting PEM CA cert: %s", + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + ldap_option = LDAP_OPT_X_TLS_DEMAND; + } + else + ldap_option = LDAP_OPT_X_TLS_NEVER; + + rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT, &ldap_option); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR setting cert verify mode: %s", + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } + server = ldap_init(host, (int)conn->port); + if(server == NULL) { + failf(data, "LDAP local: Cannot connect to %s:%ld", + conn->host.dispname, conn->port); + result = CURLE_COULDNT_CONNECT; + goto quit; + } + ldap_option = LDAP_OPT_X_TLS_HARD; + rc = ldap_set_option(server, LDAP_OPT_X_TLS, &ldap_option); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR setting SSL/TLS mode: %s", + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } +/* + rc = ldap_start_tls_s(server, NULL, NULL); + if(rc != LDAP_SUCCESS) { + failf(data, "LDAP local: ERROR starting SSL/TLS mode: %s", + ldap_err2string(rc)); + result = CURLE_SSL_CERTPROBLEM; + goto quit; + } +*/ +#else + /* we should probably never come up to here since configure + should check in first place if we can support LDAP SSL/TLS */ + failf(data, "LDAP local: SSL/TLS not supported with this version " + "of the OpenLDAP toolkit\n"); + result = CURLE_SSL_CERTPROBLEM; + goto quit; +#endif +#endif +#endif /* CURL_LDAP_USE_SSL */ + } + else { + server = ldap_init(host, (int)conn->port); + if(server == NULL) { + failf(data, "LDAP local: Cannot connect to %s:%ld", + conn->host.dispname, conn->port); + result = CURLE_COULDNT_CONNECT; + goto quit; + } + } +#ifdef USE_WIN32_LDAP + ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto); +#endif + + rc = ldap_simple_bind_s(server, user, passwd); + if(!ldap_ssl && rc != 0) { + ldap_proto = LDAP_VERSION2; + ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto); + rc = ldap_simple_bind_s(server, user, passwd); + } + if(rc != 0) { + failf(data, "LDAP local: ldap_simple_bind_s %s", ldap_err2string(rc)); + result = CURLE_LDAP_CANNOT_BIND; + goto quit; + } + + rc = ldap_search_s(server, ludp->lud_dn, ludp->lud_scope, + ludp->lud_filter, ludp->lud_attrs, 0, &ldapmsg); + + if(rc != 0 && rc != LDAP_SIZELIMIT_EXCEEDED) { + failf(data, "LDAP remote: %s", ldap_err2string(rc)); + result = CURLE_LDAP_SEARCH_FAILED; + goto quit; + } + + for(num = 0, entryIterator = ldap_first_entry(server, ldapmsg); + entryIterator; + entryIterator = ldap_next_entry(server, entryIterator), num++) { + BerElement *ber = NULL; +#if defined(USE_WIN32_LDAP) + TCHAR *attribute; +#else + char *attribute; /*! suspicious that this isn't 'const' */ +#endif + int i; + + /* Get the DN and write it to the client */ + { + char *name; + size_t name_len; +#if defined(USE_WIN32_LDAP) + TCHAR *dn = ldap_get_dn(server, entryIterator); + name = Curl_convert_tchar_to_UTF8(dn); + if(!name) { + ldap_memfree(dn); + + result = CURLE_OUT_OF_MEMORY; + + goto quit; + } +#else + char *dn = name = ldap_get_dn(server, entryIterator); +#endif + name_len = strlen(name); + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"DN: ", 4); + if(result) { +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(name); +#endif + ldap_memfree(dn); + + goto quit; + } + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *) name, + name_len); + if(result) { +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(name); +#endif + ldap_memfree(dn); + + goto quit; + } + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1); + if(result) { +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(name); +#endif + ldap_memfree(dn); + + goto quit; + } + + dlsize += name_len + 5; + +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(name); +#endif + ldap_memfree(dn); + } + + /* Get the attributes and write them to the client */ + for(attribute = ldap_first_attribute(server, entryIterator, &ber); + attribute; + attribute = ldap_next_attribute(server, entryIterator, ber)) { + BerValue **vals; + size_t attr_len; +#if defined(USE_WIN32_LDAP) + char *attr = Curl_convert_tchar_to_UTF8(attribute); + if(!attr) { + if(ber) + ber_free(ber, 0); + + result = CURLE_OUT_OF_MEMORY; + + goto quit; + } +#else + char *attr = attribute; +#endif + attr_len = strlen(attr); + + vals = ldap_get_values_len(server, entryIterator, attribute); + if(vals != NULL) { + for(i = 0; (vals[i] != NULL); i++) { + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\t", 1); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + result = Curl_client_write(conn, CLIENTWRITE_BODY, + (char *) attr, attr_len); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)": ", 2); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + dlsize += attr_len + 3; + + if((attr_len > 7) && + (strcmp(";binary", (char *) attr + (attr_len - 7)) == 0)) { + /* Binary attribute, encode to base64. */ + result = Curl_base64_encode(data, + vals[i]->bv_val, + vals[i]->bv_len, + &val_b64, + &val_b64_sz); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + if(val_b64_sz > 0) { + result = Curl_client_write(conn, CLIENTWRITE_BODY, val_b64, + val_b64_sz); + free(val_b64); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + dlsize += val_b64_sz; + } + } + else { + result = Curl_client_write(conn, CLIENTWRITE_BODY, vals[i]->bv_val, + vals[i]->bv_len); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + dlsize += vals[i]->bv_len; + } + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1); + if(result) { + ldap_value_free_len(vals); +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + if(ber) + ber_free(ber, 0); + + goto quit; + } + + dlsize++; + } + + /* Free memory used to store values */ + ldap_value_free_len(vals); + } + + /* Free the attribute as we are done with it */ +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(attr); +#endif + ldap_memfree(attribute); + + result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1); + if(result) + goto quit; + dlsize++; + Curl_pgrsSetDownloadCounter(data, dlsize); + } + + if(ber) + ber_free(ber, 0); + } + +quit: + if(ldapmsg) { + ldap_msgfree(ldapmsg); + LDAP_TRACE (("Received %d entries\n", num)); + } + if(rc == LDAP_SIZELIMIT_EXCEEDED) + infof(data, "There are more than %d entries\n", num); + if(ludp) + ldap_free_urldesc(ludp); + if(server) + ldap_unbind_s(server); +#if defined(HAVE_LDAP_SSL) && defined(CURL_HAS_NOVELL_LDAPSDK) + if(ldap_ssl) + ldapssl_client_deinit(); +#endif /* HAVE_LDAP_SSL && CURL_HAS_NOVELL_LDAPSDK */ + +#if defined(USE_WIN32_LDAP) + Curl_unicodefree(passwd); + Curl_unicodefree(user); + Curl_unicodefree(host); +#endif + + /* no data to transfer */ + Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL); + connclose(conn, "LDAP connection always disable re-use"); + + return result; +} + +#ifdef DEBUG_LDAP +static void _ldap_trace (const char *fmt, ...) +{ + static int do_trace = -1; + va_list args; + + if(do_trace == -1) { + const char *env = getenv("CURL_TRACE"); + do_trace = (env && strtol(env, NULL, 10) > 0); + } + if(!do_trace) + return; + + va_start (args, fmt); + vfprintf (stderr, fmt, args); + va_end (args); +} +#endif + +#ifndef HAVE_LDAP_URL_PARSE + +/* + * Return scope-value for a scope-string. + */ +static int str2scope (const char *p) +{ + if(strequal(p, "one")) + return LDAP_SCOPE_ONELEVEL; + if(strequal(p, "onetree")) + return LDAP_SCOPE_ONELEVEL; + if(strequal(p, "base")) + return LDAP_SCOPE_BASE; + if(strequal(p, "sub")) + return LDAP_SCOPE_SUBTREE; + if(strequal( p, "subtree")) + return LDAP_SCOPE_SUBTREE; + return (-1); +} + +/* + * Split 'str' into strings separated by commas. + * Note: out[] points into 'str'. + */ +static bool split_str(char *str, char ***out, size_t *count) +{ + char **res; + char *lasts; + char *s; + size_t i; + size_t items = 1; + + s = strchr(str, ','); + while(s) { + items++; + s = strchr(++s, ','); + } + + res = calloc(items, sizeof(char *)); + if(!res) + return FALSE; + + for(i = 0, s = strtok_r(str, ",", &lasts); s && i < items; + s = strtok_r(NULL, ",", &lasts), i++) + res[i] = s; + + *out = res; + *count = items; + + return TRUE; +} + +/* + * Break apart the pieces of an LDAP URL. + * Syntax: + * ldap://<hostname>:<port>/<base_dn>?<attributes>?<scope>?<filter>?<ext> + * + * <hostname> already known from 'conn->host.name'. + * <port> already known from 'conn->remote_port'. + * extract the rest from 'conn->data->state.path+1'. All fields are optional. + * e.g. + * ldap://<hostname>:<port>/?<attributes>?<scope>?<filter> + * yields ludp->lud_dn = "". + * + * Defined in RFC4516 section 2. + */ +static int _ldap_url_parse2 (const struct connectdata *conn, LDAPURLDesc *ludp) +{ + int rc = LDAP_SUCCESS; + char *path; + char *p; + char *q; + size_t i; + + if(!conn->data || + !conn->data->state.path || + conn->data->state.path[0] != '/' || + !checkprefix("LDAP", conn->data->change.url)) + return LDAP_INVALID_SYNTAX; + + ludp->lud_scope = LDAP_SCOPE_BASE; + ludp->lud_port = conn->remote_port; + ludp->lud_host = conn->host.name; + + /* Duplicate the path */ + p = path = strdup(conn->data->state.path + 1); + if(!path) + return LDAP_NO_MEMORY; + + /* Parse the DN (Distinguished Name) */ + q = strchr(p, '?'); + if(q) + *q++ = '\0'; + + if(*p) { + char *dn = p; + char *unescaped; + + LDAP_TRACE (("DN '%s'\n", dn)); + + /* Unescape the DN */ + unescaped = curl_easy_unescape(conn->data, dn, 0, NULL); + if(!unescaped) { + rc = LDAP_NO_MEMORY; + + goto quit; + } + +#if defined(USE_WIN32_LDAP) + /* Convert the unescaped string to a tchar */ + ludp->lud_dn = Curl_convert_UTF8_to_tchar(unescaped); + + /* Free the unescaped string as we are done with it */ + Curl_unicodefree(unescaped); + + if(!ludp->lud_dn) { + rc = LDAP_NO_MEMORY; + + goto quit; + } +#else + ludp->lud_dn = unescaped; +#endif + } + + p = q; + if(!p) + goto quit; + + /* Parse the attributes. skip "??" */ + q = strchr(p, '?'); + if(q) + *q++ = '\0'; + + if(*p) { + char **attributes; + size_t count = 0; + + /* Split the string into an array of attributes */ + if(!split_str(p, &attributes, &count)) { + rc = LDAP_NO_MEMORY; + + goto quit; + } + + /* Allocate our array (+1 for the NULL entry) */ +#if defined(USE_WIN32_LDAP) + ludp->lud_attrs = calloc(count + 1, sizeof(TCHAR *)); +#else + ludp->lud_attrs = calloc(count + 1, sizeof(char *)); +#endif + if(!ludp->lud_attrs) { + free(attributes); + + rc = LDAP_NO_MEMORY; + + goto quit; + } + + for(i = 0; i < count; i++) { + char *unescaped; + + LDAP_TRACE (("attr[%d] '%s'\n", i, attributes[i])); + + /* Unescape the attribute */ + unescaped = curl_easy_unescape(conn->data, attributes[i], 0, NULL); + if(!unescaped) { + free(attributes); + + rc = LDAP_NO_MEMORY; + + goto quit; + } + +#if defined(USE_WIN32_LDAP) + /* Convert the unescaped string to a tchar */ + ludp->lud_attrs[i] = Curl_convert_UTF8_to_tchar(unescaped); + + /* Free the unescaped string as we are done with it */ + Curl_unicodefree(unescaped); + + if(!ludp->lud_attrs[i]) { + free(attributes); + + rc = LDAP_NO_MEMORY; + + goto quit; + } +#else + ludp->lud_attrs[i] = unescaped; +#endif + + ludp->lud_attrs_dups++; + } + + free(attributes); + } + + p = q; + if(!p) + goto quit; + + /* Parse the scope. skip "??" */ + q = strchr(p, '?'); + if(q) + *q++ = '\0'; + + if(*p) { + ludp->lud_scope = str2scope(p); + if(ludp->lud_scope == -1) { + rc = LDAP_INVALID_SYNTAX; + + goto quit; + } + LDAP_TRACE (("scope %d\n", ludp->lud_scope)); + } + + p = q; + if(!p) + goto quit; + + /* Parse the filter */ + q = strchr(p, '?'); + if(q) + *q++ = '\0'; + + if(*p) { + char *filter = p; + char *unescaped; + + LDAP_TRACE (("filter '%s'\n", filter)); + + /* Unescape the filter */ + unescaped = curl_easy_unescape(conn->data, filter, 0, NULL); + if(!unescaped) { + rc = LDAP_NO_MEMORY; + + goto quit; + } + +#if defined(USE_WIN32_LDAP) + /* Convert the unescaped string to a tchar */ + ludp->lud_filter = Curl_convert_UTF8_to_tchar(unescaped); + + /* Free the unescaped string as we are done with it */ + Curl_unicodefree(unescaped); + + if(!ludp->lud_filter) { + rc = LDAP_NO_MEMORY; + + goto quit; + } +#else + ludp->lud_filter = unescaped; +#endif + } + + p = q; + if(p && !*p) { + rc = LDAP_INVALID_SYNTAX; + + goto quit; + } + +quit: + free(path); + + return rc; +} + +static int _ldap_url_parse (const struct connectdata *conn, + LDAPURLDesc **ludpp) +{ + LDAPURLDesc *ludp = calloc(1, sizeof(*ludp)); + int rc; + + *ludpp = NULL; + if(!ludp) + return LDAP_NO_MEMORY; + + rc = _ldap_url_parse2 (conn, ludp); + if(rc != LDAP_SUCCESS) { + _ldap_free_urldesc(ludp); + ludp = NULL; + } + *ludpp = ludp; + return (rc); +} + +static void _ldap_free_urldesc (LDAPURLDesc *ludp) +{ + size_t i; + + if(!ludp) + return; + + free(ludp->lud_dn); + free(ludp->lud_filter); + + if(ludp->lud_attrs) { + for(i = 0; i < ludp->lud_attrs_dups; i++) + free(ludp->lud_attrs[i]); + free(ludp->lud_attrs); + } + + free (ludp); +} +#endif /* !HAVE_LDAP_URL_PARSE */ +#endif /* !CURL_DISABLE_LDAP && !USE_OPENLDAP */ |