| /***************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * The contents of this file are subject to the Mozilla Public License |
| * Version 1.0 (the "License"); you may not use this file except in |
| * compliance with the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" |
| * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
| * License for the specific language governing rights and limitations |
| * under the License. |
| * |
| * The Original Code is Curl. |
| * |
| * The Initial Developer of the Original Code is Daniel Stenberg. |
| * |
| * Portions created by the Initial Developer are Copyright (C) 1998. |
| * All Rights Reserved. |
| * |
| * ------------------------------------------------------------ |
| * Main author: |
| * - Daniel Stenberg <[email protected]> |
| * |
| * http://curl.haxx.se |
| * |
| * $Source$ |
| * $Revision$ |
| * $Date$ |
| * $Author$ |
| * $State$ |
| * $Locker$ |
| * |
| * ------------------------------------------------------------ |
| ****************************************************************************/ |
| |
| /* |
| * The original SSL code was written by |
| * Linas Vepstas <[email protected]> and Sampo Kellomaki <[email protected]> |
| */ |
| |
| #include "setup.h" |
| #include <string.h> |
| #include <stdlib.h> |
| |
| #include "urldata.h" |
| #include "sendf.h" |
| #include "formdata.h" /* for the boundary function */ |
| |
| #ifdef USE_SSLEAY |
| |
| static char global_passwd[64]; |
| |
| static int passwd_callback(char *buf, int num, int verify |
| #if OPENSSL_VERSION_NUMBER >= 0x00904100L |
| /* This was introduced in 0.9.4, we can set this |
| using SSL_CTX_set_default_passwd_cb_userdata() |
| */ |
| , void *userdata |
| #endif |
| ) |
| { |
| if(verify) |
| fprintf(stderr, "%s\n", buf); |
| else { |
| if(num > strlen(global_passwd)) { |
| strcpy(buf, global_passwd); |
| return strlen(buf); |
| } |
| } |
| return 0; |
| } |
| |
| /* This function is *highly* inspired by (and parts are directly stolen |
| * from) source from the SSLeay package written by Eric Young |
| * ([email protected]). */ |
| |
| int SSL_cert_stuff(struct UrlData *data, |
| char *cert_file, |
| char *key_file) |
| { |
| if (cert_file != NULL) { |
| SSL *ssl; |
| X509 *x509; |
| |
| if(data->cert_passwd) { |
| /* |
| * If password has been given, we store that in the global |
| * area (*shudder*) for a while: |
| */ |
| strcpy(global_passwd, data->cert_passwd); |
| /* Set passwd callback: */ |
| SSL_CTX_set_default_passwd_cb(data->ssl.ctx, passwd_callback); |
| } |
| |
| if (SSL_CTX_use_certificate_file(data->ssl.ctx, |
| cert_file, |
| SSL_FILETYPE_PEM) <= 0) { |
| failf(data, "unable to set certificate file (wrong password?)\n"); |
| return(0); |
| } |
| if (key_file == NULL) |
| key_file=cert_file; |
| |
| if (SSL_CTX_use_PrivateKey_file(data->ssl.ctx, |
| key_file, |
| SSL_FILETYPE_PEM) <= 0) { |
| failf(data, "unable to set public key file\n"); |
| return(0); |
| } |
| |
| ssl=SSL_new(data->ssl.ctx); |
| x509=SSL_get_certificate(ssl); |
| |
| if (x509 != NULL) |
| EVP_PKEY_copy_parameters(X509_get_pubkey(x509), |
| SSL_get_privatekey(ssl)); |
| SSL_free(ssl); |
| |
| /* If we are using DSA, we can copy the parameters from |
| * the private key */ |
| |
| |
| /* Now we know that a key and cert have been set against |
| * the SSL context */ |
| if (!SSL_CTX_check_private_key(data->ssl.ctx)) { |
| failf(data, "Private key does not match the certificate public key\n"); |
| return(0); |
| } |
| |
| /* erase it now */ |
| memset(global_passwd, 0, sizeof(global_passwd)); |
| } |
| return(1); |
| } |
| |
| #endif |
| |
| #ifdef USE_SSLEAY |
| int cert_verify_callback(int ok, X509_STORE_CTX *ctx) |
| { |
| X509 *err_cert; |
| char buf[256]; |
| |
| err_cert=X509_STORE_CTX_get_current_cert(ctx); |
| X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256); |
| |
| return 1; |
| } |
| |
| #endif |
| |
| /* ====================================================== */ |
| int |
| UrgSSLConnect (struct UrlData *data) |
| { |
| #ifdef USE_SSLEAY |
| int err; |
| char * str; |
| SSL_METHOD *req_method; |
| |
| /* mark this is being ssl enabled from here on out. */ |
| data->ssl.use = TRUE; |
| |
| /* Lets get nice error messages */ |
| SSL_load_error_strings(); |
| |
| #ifdef HAVE_RAND_STATUS |
| /* RAND_status() was introduced in OpenSSL 0.9.5 */ |
| if(0 == RAND_status()) |
| #endif |
| { |
| /* We need to seed the PRNG properly! */ |
| #ifdef HAVE_RAND_SCREEN |
| /* This one gets a random value by reading the currently shown screen */ |
| RAND_screen(); |
| #else |
| int len; |
| char *area = MakeFormBoundary(); |
| if(!area) |
| return 3; /* out of memory */ |
| |
| len = strlen(area); |
| |
| RAND_seed(area, len); |
| |
| free(area); /* now remove the random junk */ |
| #endif |
| } |
| |
| /* Setup all the global SSL stuff */ |
| SSLeay_add_ssl_algorithms(); |
| |
| switch(data->ssl.version) { |
| default: |
| req_method = SSLv23_client_method(); |
| break; |
| case 2: |
| req_method = SSLv2_client_method(); |
| break; |
| case 3: |
| req_method = SSLv3_client_method(); |
| break; |
| } |
| |
| data->ssl.ctx = SSL_CTX_new(req_method); |
| |
| if(!data->ssl.ctx) { |
| failf(data, "SSL: couldn't create a context!"); |
| return 1; |
| } |
| |
| if(data->cert) { |
| if (!SSL_cert_stuff(data, data->cert, data->cert)) { |
| failf(data, "couldn't use certificate!\n"); |
| return 2; |
| } |
| } |
| |
| if(data->ssl.verifypeer){ |
| SSL_CTX_set_verify(data->ssl.ctx, |
| SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT| |
| SSL_VERIFY_CLIENT_ONCE, |
| cert_verify_callback); |
| if (!SSL_CTX_load_verify_locations(data->ssl.ctx, |
| data->ssl.CAfile, |
| data->ssl.CApath)) { |
| failf(data,"error setting cerficate verify locations\n"); |
| return 2; |
| } |
| } |
| else |
| SSL_CTX_set_verify(data->ssl.ctx, SSL_VERIFY_NONE, cert_verify_callback); |
| |
| |
| /* Lets make an SSL structure */ |
| data->ssl.handle = SSL_new (data->ssl.ctx); |
| SSL_set_connect_state (data->ssl.handle); |
| |
| data->ssl.server_cert = 0x0; |
| |
| /* pass the raw socket into the SSL layers */ |
| SSL_set_fd (data->ssl.handle, data->firstsocket); |
| err = SSL_connect (data->ssl.handle); |
| |
| if (-1 == err) { |
| err = ERR_get_error(); |
| failf(data, "SSL: %s", ERR_error_string(err, NULL)); |
| return 10; |
| } |
| |
| /* Informational message */ |
| infof (data, "SSL connection using %s\n", |
| SSL_get_cipher(data->ssl.handle)); |
| |
| /* Get server's certificate (note: beware of dynamic allocation) - opt */ |
| /* major serious hack alert -- we should check certificates |
| * to authenticate the server; otherwise we risk man-in-the-middle |
| * attack |
| */ |
| |
| data->ssl.server_cert = SSL_get_peer_certificate (data->ssl.handle); |
| if(!data->ssl.server_cert) { |
| failf(data, "SSL: couldn't get peer certificate!"); |
| return 3; |
| } |
| infof (data, "Server certificate:\n"); |
| |
| str = X509_NAME_oneline (X509_get_subject_name (data->ssl.server_cert), |
| NULL, 0); |
| if(!str) { |
| failf(data, "SSL: couldn't get X509-subject!"); |
| return 4; |
| } |
| infof(data, "\t subject: %s\n", str); |
| CRYPTO_free(str); |
| |
| str = X509_NAME_oneline (X509_get_issuer_name (data->ssl.server_cert), |
| NULL, 0); |
| if(!str) { |
| failf(data, "SSL: couldn't get X509-issuer name!"); |
| return 5; |
| } |
| infof(data, "\t issuer: %s\n", str); |
| CRYPTO_free(str); |
| |
| /* We could do all sorts of certificate verification stuff here before |
| deallocating the certificate. */ |
| |
| if(data->ssl.verifypeer) { |
| data->ssl.certverifyresult=SSL_get_verify_result(data->ssl.handle); |
| infof(data, "Verify result: %d\n", data->ssl.certverifyresult); |
| } |
| else |
| data->ssl.certverifyresult=0; |
| |
| X509_free(data->ssl.server_cert); |
| #else /* USE_SSLEAY */ |
| /* this is for "-ansi -Wall -pedantic" to stop complaining! (rabe) */ |
| (void) data; |
| #endif |
| return 0; |
| } |
