| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2019, 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 https://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 |
| |
| #include "urldata.h" |
| #include <curl/curl.h> |
| #include "sendf.h" |
| #include "escape.h" |
| #include "progress.h" |
| #include "transfer.h" |
| #include "strcase.h" |
| #include "strtok.h" |
| #include "curl_ldap.h" |
| #include "curl_multibyte.h" |
| #include "curl_base64.h" |
| #include "connect.h" |
| /* The last 3 #include files should be in this order */ |
| #include "curl_printf.h" |
| #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(0) |
| |
| static void _ldap_trace(const char *fmt, ...); |
| #else |
| #define LDAP_TRACE(x) Curl_nop_stmt |
| #endif |
| |
| #if defined(USE_WIN32_LDAP) && defined(ldap_err2string) |
| /* Use ansi error strings in UNICODE builds */ |
| #undef ldap_err2string |
| #define ldap_err2string ldap_err2stringA |
| #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 */ |
| ZERO_NULL, /* connection_check */ |
| 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 */ |
| ZERO_NULL, /* connection_check */ |
| PORT_LDAPS, /* defport */ |
| CURLPROTO_LDAPS, /* protocol */ |
| PROTOPT_SSL /* flags */ |
| }; |
| #endif |
| |
| #if defined(USE_WIN32_LDAP) |
| |
| #if defined(USE_WINDOWS_SSPI) |
| static int ldap_win_bind_auth(LDAP *server, const char *user, |
| const char *passwd, unsigned long authflags) |
| { |
| ULONG method = 0; |
| SEC_WINNT_AUTH_IDENTITY cred; |
| int rc = LDAP_AUTH_METHOD_NOT_SUPPORTED; |
| |
| memset(&cred, 0, sizeof(cred)); |
| |
| #if defined(USE_SPNEGO) |
| if(authflags & CURLAUTH_NEGOTIATE) { |
| method = LDAP_AUTH_NEGOTIATE; |
| } |
| else |
| #endif |
| #if defined(USE_NTLM) |
| if(authflags & CURLAUTH_NTLM) { |
| method = LDAP_AUTH_NTLM; |
| } |
| else |
| #endif |
| #if !defined(CURL_DISABLE_CRYPTO_AUTH) |
| if(authflags & CURLAUTH_DIGEST) { |
| method = LDAP_AUTH_DIGEST; |
| } |
| else |
| #endif |
| { |
| /* required anyway if one of upper preprocessor definitions enabled */ |
| } |
| |
| if(method && user && passwd) { |
| rc = Curl_create_sspi_identity(user, passwd, &cred); |
| if(!rc) { |
| rc = ldap_bind_s(server, NULL, (TCHAR *)&cred, method); |
| Curl_sspi_free_identity(&cred); |
| } |
| } |
| else { |
| /* proceed with current user credentials */ |
| method = LDAP_AUTH_NEGOTIATE; |
| rc = ldap_bind_s(server, NULL, NULL, method); |
| } |
| return rc; |
| } |
| #endif /* #if defined(USE_WINDOWS_SSPI) */ |
| |
| static int ldap_win_bind(struct connectdata *conn, LDAP *server, |
| const char *user, const char *passwd) |
| { |
| int rc = LDAP_INVALID_CREDENTIALS; |
| |
| PTCHAR inuser = NULL; |
| PTCHAR inpass = NULL; |
| |
| if(user && passwd && (conn->data->set.httpauth & CURLAUTH_BASIC)) { |
| inuser = Curl_convert_UTF8_to_tchar((char *) user); |
| inpass = Curl_convert_UTF8_to_tchar((char *) passwd); |
| |
| rc = ldap_simple_bind_s(server, inuser, inpass); |
| |
| Curl_unicodefree(inuser); |
| Curl_unicodefree(inpass); |
| } |
| #if defined(USE_WINDOWS_SSPI) |
| else { |
| rc = ldap_win_bind_auth(server, user, passwd, conn->data->set.httpauth); |
| } |
| #endif |
| |
| return rc; |
| } |
| #endif /* #if defined(USE_WIN32_LDAP) */ |
| |
| 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 Curl_easy *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; |
| #else |
| char *host = NULL; |
| #endif |
| char *user = NULL; |
| char *passwd = NULL; |
| |
| *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; |
| } |
| #else |
| host = conn->host.name; |
| #endif |
| |
| if(conn->bits.user_passwd) { |
| user = conn->user; |
| passwd = conn->passwd; |
| } |
| |
| #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 = conn->ssl_config.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(conn->ssl_config.verifypeer) { |
| /* Novell SDK supports DER or BASE64 files. */ |
| int cert_type = LDAPSSL_CERT_FILETYPE_B64; |
| if((data->set.ssl.cert_type) && |
| (strcasecompare(data->set.ssl.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(conn->ssl_config.verifypeer) { |
| /* OpenLDAP SDK supports BASE64 files. */ |
| if((data->set.ssl.cert_type) && |
| (!strcasecompare(data->set.ssl.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 |
| |
| #ifdef USE_WIN32_LDAP |
| rc = ldap_win_bind(conn, server, user, passwd); |
| #else |
| rc = ldap_simple_bind_s(server, user, passwd); |
| #endif |
| if(!ldap_ssl && rc != 0) { |
| ldap_proto = LDAP_VERSION2; |
| ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto); |
| #ifdef USE_WIN32_LDAP |
| rc = ldap_win_bind(conn, server, user, passwd); |
| #else |
| rc = ldap_simple_bind_s(server, user, passwd); |
| #endif |
| } |
| if(rc != 0) { |
| #ifdef USE_WIN32_LDAP |
| failf(data, "LDAP local: bind via ldap_win_bind %s", |
| ldap_err2string(rc)); |
| #else |
| failf(data, "LDAP local: bind via ldap_simple_bind_s %s", |
| ldap_err2string(rc)); |
| #endif |
| 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(host); |
| #endif |
| |
| /* no data to transfer */ |
| Curl_setup_transfer(data, -1, -1, FALSE, -1); |
| 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(strcasecompare(p, "one")) |
| return LDAP_SCOPE_ONELEVEL; |
| if(strcasecompare(p, "onetree")) |
| return LDAP_SCOPE_ONELEVEL; |
| if(strcasecompare(p, "base")) |
| return LDAP_SCOPE_BASE; |
| if(strcasecompare(p, "sub")) |
| return LDAP_SCOPE_SUBTREE; |
| if(strcasecompare(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 *p; |
| char *path; |
| char *q = NULL; |
| char *query = NULL; |
| size_t i; |
| |
| if(!conn->data || |
| !conn->data->state.up.path || |
| conn->data->state.up.path[0] != '/' || |
| !strncasecompare("LDAP", conn->data->state.up.scheme, 4)) |
| 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.up.path + 1); |
| if(!path) |
| return LDAP_NO_MEMORY; |
| |
| /* Duplicate the query if present */ |
| if(conn->data->state.up.query) { |
| q = query = strdup(conn->data->state.up.query); |
| if(!query) { |
| free(path); |
| return LDAP_NO_MEMORY; |
| } |
| } |
| |
| /* Parse the DN (Distinguished Name) */ |
| if(*p) { |
| char *dn = p; |
| char *unescaped; |
| CURLcode result; |
| |
| LDAP_TRACE(("DN '%s'\n", dn)); |
| |
| /* Unescape the DN */ |
| result = Curl_urldecode(conn->data, dn, 0, &unescaped, NULL, FALSE); |
| if(result) { |
| 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; |
| CURLcode result; |
| |
| LDAP_TRACE(("attr[%d] '%s'\n", i, attributes[i])); |
| |
| /* Unescape the attribute */ |
| result = Curl_urldecode(conn->data, attributes[i], 0, &unescaped, NULL, |
| FALSE); |
| if(result) { |
| 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; |
| CURLcode result; |
| |
| LDAP_TRACE(("filter '%s'\n", filter)); |
| |
| /* Unescape the filter */ |
| result = Curl_urldecode(conn->data, filter, 0, &unescaped, NULL, FALSE); |
| if(result) { |
| 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); |
| free(query); |
| |
| 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) |
| { |
| if(!ludp) |
| return; |
| |
| free(ludp->lud_dn); |
| free(ludp->lud_filter); |
| |
| if(ludp->lud_attrs) { |
| size_t i; |
| 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 */ |
