SSL: Added CyaSSL to SSL abstraction layer
CyaSSL (available from git@github.com:cyassl/cyassl.git) has been added to the SSL abstraction layer. To test: 1) git CyaSSL sources 2) autoreconf -i 3) ./configure --disable-static 4) make 5) sudo make install 6) autoreconf -i 7) git curl sources (and this patch) 8) ./configure --disable-shared --with-cyassl --without-ssl --enable-debug 9) make 10) normal testing Please send questions or comments to todd@yassl.com .
This commit is contained in:
Todd A Ouska
Daniel Stenberg
parent
0354cd5f77
commit
a8f30fa555
572
lib/cyassl.c
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572
lib/cyassl.c
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@ -0,0 +1,572 @@
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/*
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* Source file for all CyaSSL-specific code for the TLS/SSL layer. No code
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* but sslgen.c should ever call or use these functions.
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*
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*/
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#include "setup.h"
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#ifdef USE_CYASSL
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#include "urldata.h"
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#include "sendf.h"
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#include "inet_pton.h"
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#include "cyassl.h"
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#include "sslgen.h"
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#include "parsedate.h"
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#include "connect.h" /* for the connect timeout */
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#include "select.h"
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#include "rawstr.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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static Curl_recv cyassl_recv;
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static Curl_send cyassl_send;
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static int do_file_type(const char *type)
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{
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if(!type || !type[0])
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return SSL_FILETYPE_PEM;
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if(Curl_raw_equal(type, "PEM"))
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return SSL_FILETYPE_PEM;
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if(Curl_raw_equal(type, "DER"))
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return SSL_FILETYPE_ASN1;
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return -1;
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}
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/*
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* This function loads all the client/CA certificates and CRLs. Setup the TLS
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* layer and do all necessary magic.
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*/
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static CURLcode
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cyassl_connect_step1(struct connectdata *conn,
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int sockindex)
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{
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int ret = -1;
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struct SessionHandle *data = conn->data;
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struct ssl_connect_data* conssl = &conn->ssl[sockindex];
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SSL_METHOD* req_method = NULL;
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void* ssl_sessionid = NULL;
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curl_socket_t sockfd = conn->sock[sockindex];
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if(conssl->state == ssl_connection_complete)
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return CURLE_OK;
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/* CyaSSL doesn't support SSLv2 */
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if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
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failf(data, "CyaSSL does not support SSLv2");
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return CURLE_SSL_CONNECT_ERROR;
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}
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/* check to see if we've been told to use an explicit SSL/TLS version */
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switch(data->set.ssl.version) {
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case CURL_SSLVERSION_DEFAULT:
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/* we try to figure out version */
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req_method = SSLv23_client_method();
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break;
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case CURL_SSLVERSION_TLSv1:
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req_method = TLSv1_client_method();
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break;
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case CURL_SSLVERSION_SSLv3:
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req_method = SSLv3_client_method();
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break;
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default:
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req_method = TLSv1_client_method();
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}
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if(!req_method) {
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failf(data, "SSL: couldn't create a method!");
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return CURLE_OUT_OF_MEMORY;
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}
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if(conssl->ctx)
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SSL_CTX_free(conssl->ctx);
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conssl->ctx = SSL_CTX_new(req_method);
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if(!conssl->ctx) {
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failf(data, "SSL: couldn't create a context!");
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return CURLE_OUT_OF_MEMORY;
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}
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/* load trusted cacert */
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if(data->set.str[STRING_SSL_CAFILE]) {
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if (!SSL_CTX_load_verify_locations(conssl->ctx,
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data->set.str[STRING_SSL_CAFILE],
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data->set.str[STRING_SSL_CAPATH])) {
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if (data->set.ssl.verifypeer) {
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/* Fail if we insiste on successfully verifying the server. */
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failf(data,"error setting certificate verify locations:\n"
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" CAfile: %s\n CApath: %s\n",
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data->set.str[STRING_SSL_CAFILE]?
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data->set.str[STRING_SSL_CAFILE]: "none",
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data->set.str[STRING_SSL_CAPATH]?
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data->set.str[STRING_SSL_CAPATH] : "none");
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return CURLE_SSL_CACERT_BADFILE;
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}
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else {
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/* Just continue with a warning if no strict certificate
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verification is required. */
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infof(data, "error setting certificate verify locations,"
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" continuing anyway:\n");
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}
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}
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else {
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/* Everything is fine. */
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infof(data, "successfully set certificate verify locations:\n");
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}
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infof(data,
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" CAfile: %s\n"
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" CApath: %s\n",
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data->set.str[STRING_SSL_CAFILE] ? data->set.str[STRING_SSL_CAFILE]:
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"none",
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data->set.str[STRING_SSL_CAPATH] ? data->set.str[STRING_SSL_CAPATH]:
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"none");
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}
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/* Load the client certificate, and private key */
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if(data->set.str[STRING_CERT] && data->set.str[STRING_KEY]) {
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int file_type = do_file_type(data->set.str[STRING_CERT_TYPE]);
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if (SSL_CTX_use_certificate_file(conssl->ctx, data->set.str[STRING_CERT],
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file_type) != 1) {
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failf(data, "unable to use client certificate (no key or wrong pass"
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" phrase?)");
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return CURLE_SSL_CONNECT_ERROR;
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}
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file_type = do_file_type(data->set.str[STRING_KEY_TYPE]);
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if (SSL_CTX_use_PrivateKey_file(conssl->ctx, data->set.str[STRING_KEY],
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file_type) != 1) {
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failf(data, "unable to set private key");
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return CURLE_SSL_CONNECT_ERROR;
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}
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}
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/* SSL always tries to verify the peer, this only says whether it should
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* fail to connect if the verification fails, or if it should continue
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* anyway. In the latter case the result of the verification is checked with
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* SSL_get_verify_result() below. */
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SSL_CTX_set_verify(conssl->ctx,
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data->set.ssl.verifypeer?SSL_VERIFY_PEER:SSL_VERIFY_NONE,
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NULL);
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/* Let's make an SSL structure */
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if (conssl->handle)
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SSL_free(conssl->handle);
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conssl->handle = SSL_new(conssl->ctx);
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if (!conssl->handle) {
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failf(data, "SSL: couldn't create a context (handle)!");
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return CURLE_OUT_OF_MEMORY;
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}
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/* Check if there's a cached ID we can/should use here! */
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if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL)) {
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/* we got a session id, use it! */
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if(!SSL_set_session(conssl->handle, ssl_sessionid)) {
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failf(data, "SSL: SSL_set_session failed: %s",
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ERR_error_string(SSL_get_error(conssl->handle, 0),NULL));
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return CURLE_SSL_CONNECT_ERROR;
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}
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/* Informational message */
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infof (data, "SSL re-using session ID\n");
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}
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/* pass the raw socket into the SSL layer */
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if (!SSL_set_fd(conssl->handle, (int)sockfd)) {
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failf(data, "SSL: SSL_set_fd failed");
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return CURLE_SSL_CONNECT_ERROR;
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}
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conssl->connecting_state = ssl_connect_2;
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return CURLE_OK;
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}
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static CURLcode
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cyassl_connect_step2(struct connectdata *conn,
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int sockindex)
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{
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int ret = -1;
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struct SessionHandle *data = conn->data;
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struct ssl_connect_data* conssl = &conn->ssl[sockindex];
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curl_socket_t sockfd = conn->sock[sockindex];
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infof(data, "CyaSSL: Connecting to %s:%d\n",
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conn->host.name, conn->remote_port);
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conn->recv[sockindex] = cyassl_recv;
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conn->send[sockindex] = cyassl_send;
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ret = SSL_connect(conssl->handle);
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if (ret != 1) {
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char error_buffer[80];
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int detail = SSL_get_error(conssl->handle, ret);
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if (SSL_ERROR_WANT_READ == detail) {
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conssl->connecting_state = ssl_connect_2_reading;
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return CURLE_OK;
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}
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if (SSL_ERROR_WANT_WRITE == detail) {
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conssl->connecting_state = ssl_connect_2_writing;
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return CURLE_OK;
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}
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failf(data, "SSL_connect failed with error %d: %s", detail,
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ERR_error_string(detail, error_buffer));
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return CURLE_SSL_CONNECT_ERROR;
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}
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conssl->connecting_state = ssl_connect_3;
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infof(data, "SSL connected");
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return CURLE_OK;
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}
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static CURLcode
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cyassl_connect_step3(struct connectdata *conn,
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int sockindex)
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{
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CURLcode retcode = CURLE_OK;
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void *old_ssl_sessionid=NULL;
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struct SessionHandle *data = conn->data;
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struct ssl_connect_data *connssl = &conn->ssl[sockindex];
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int incache;
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SSL_SESSION *our_ssl_sessionid;
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DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
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our_ssl_sessionid = SSL_get_session(connssl->handle);
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incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
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if (incache) {
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if (old_ssl_sessionid != our_ssl_sessionid) {
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infof(data, "old SSL session ID is stale, removing\n");
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Curl_ssl_delsessionid(conn, old_ssl_sessionid);
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incache = FALSE;
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}
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}
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if (!incache) {
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retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid,
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0 /* unknown size */);
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if(retcode) {
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failf(data, "failed to store ssl session");
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return retcode;
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}
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}
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connssl->connecting_state = ssl_connect_done;
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return retcode;
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}
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static ssize_t cyassl_send(struct connectdata *conn,
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int sockindex,
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const void *mem,
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size_t len,
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CURLcode *curlcode)
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{
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char error_buffer[80];
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int memlen = (len > (size_t)INT_MAX) ? INT_MAX : (int)len;
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int rc = SSL_write(conn->ssl[sockindex].handle, mem, memlen);
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if (rc < 0) {
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int err = SSL_get_error(conn->ssl[sockindex].handle, rc);
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switch(err) {
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case SSL_ERROR_WANT_READ:
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case SSL_ERROR_WANT_WRITE:
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/* there's data pending, re-invoke SSL_write() */
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*curlcode = CURLE_AGAIN;
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return -1;
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default:
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failf(conn->data, "SSL write: %s, errno %d",
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ERR_error_string(err, error_buffer),
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SOCKERRNO);
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*curlcode = CURLE_SEND_ERROR;
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return -1;
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}
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}
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return rc;
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}
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void Curl_cyassl_close_all(struct SessionHandle *data)
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{
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(void)data;
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}
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void Curl_cyassl_close(struct connectdata *conn, int sockindex)
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{
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struct ssl_connect_data *conssl = &conn->ssl[sockindex];
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if(conssl->handle) {
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(void)SSL_shutdown(conssl->handle);
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SSL_free (conssl->handle);
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conssl->handle = NULL;
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}
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if(conssl->ctx) {
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SSL_CTX_free (conssl->ctx);
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conssl->ctx = NULL;
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}
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}
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static ssize_t cyassl_recv(struct connectdata *conn,
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int num,
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char *buf,
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size_t buffersize,
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CURLcode *curlcode)
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{
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char error_buffer[80];
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int buffsize = (buffersize > (size_t)INT_MAX) ? INT_MAX : (int)buffersize;
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int nread = SSL_read(conn->ssl[num].handle, buf, buffsize);
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if (nread < 0) {
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int err = SSL_get_error(conn->ssl[num].handle, nread);
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switch(err) {
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case SSL_ERROR_ZERO_RETURN: /* no more data */
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break;
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case SSL_ERROR_WANT_READ:
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case SSL_ERROR_WANT_WRITE:
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/* there's data pending, re-invoke SSL_read() */
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*curlcode = CURLE_AGAIN;
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return -1;
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default:
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failf(conn->data, "SSL read: %s, errno %d",
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ERR_error_string(err, error_buffer),
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SOCKERRNO);
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*curlcode = CURLE_RECV_ERROR;
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return -1;
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}
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}
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return nread;
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}
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void Curl_cyassl_session_free(void *ptr)
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{
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/* CyaSSL reuses sessions on own, no free */
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}
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size_t Curl_cyassl_version(char *buffer, size_t size)
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{
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#ifdef CYASSL_VERSION
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return snprintf(buffer, size, "CyaSSL/%s", CYASSL_VERSION);
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#else
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return snprintf(buffer, size, "CyaSSL/%s", "<1.8.8");
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#endif
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}
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int Curl_cyassl_init(void)
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{
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InitCyaSSL();
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return 1;
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}
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bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex)
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{
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if (conn->ssl[connindex].handle) /* SSL is in use */
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return (bool)(0 != SSL_pending(conn->ssl[connindex].handle));
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else
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return FALSE;
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}
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/*
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* This function is called to shut down the SSL layer but keep the
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* socket open (CCC - Clear Command Channel)
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*/
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int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex)
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{
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int retval = 0;
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struct ssl_connect_data *connssl = &conn->ssl[sockindex];
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if(connssl->handle) {
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SSL_free (connssl->handle);
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connssl->handle = NULL;
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}
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return retval;
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}
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static CURLcode
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cyassl_connect_common(struct connectdata *conn,
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int sockindex,
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bool nonblocking,
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bool *done)
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{
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CURLcode retcode;
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struct SessionHandle *data = conn->data;
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struct ssl_connect_data *connssl = &conn->ssl[sockindex];
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curl_socket_t sockfd = conn->sock[sockindex];
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long timeout_ms;
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int what;
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/* check if the connection has already been established */
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if(ssl_connection_complete == connssl->state) {
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*done = TRUE;
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return CURLE_OK;
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}
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if(ssl_connect_1==connssl->connecting_state) {
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/* Find out how much more time we're allowed */
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timeout_ms = Curl_timeleft(data, NULL, TRUE);
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if(timeout_ms < 0) {
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/* no need to continue if time already is up */
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failf(data, "SSL connection timeout");
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return CURLE_OPERATION_TIMEDOUT;
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}
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retcode = cyassl_connect_step1(conn, sockindex);
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if(retcode)
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return retcode;
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}
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while(ssl_connect_2 == connssl->connecting_state ||
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ssl_connect_2_reading == connssl->connecting_state ||
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ssl_connect_2_writing == connssl->connecting_state) {
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/* check allowed time left */
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timeout_ms = Curl_timeleft(data, NULL, TRUE);
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if(timeout_ms < 0) {
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/* no need to continue if time already is up */
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failf(data, "SSL connection timeout");
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return CURLE_OPERATION_TIMEDOUT;
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}
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|
||||
/* if ssl is expecting something, check if it's available. */
|
||||
if(connssl->connecting_state == ssl_connect_2_reading
|
||||
|| connssl->connecting_state == ssl_connect_2_writing) {
|
||||
|
||||
curl_socket_t writefd = ssl_connect_2_writing==
|
||||
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
||||
curl_socket_t readfd = ssl_connect_2_reading==
|
||||
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
||||
|
||||
what = Curl_socket_ready(readfd, writefd,
|
||||
nonblocking?0:(int)timeout_ms);
|
||||
if(what < 0) {
|
||||
/* fatal error */
|
||||
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
||||
return CURLE_SSL_CONNECT_ERROR;
|
||||
}
|
||||
else if(0 == what) {
|
||||
if(nonblocking) {
|
||||
*done = FALSE;
|
||||
return CURLE_OK;
|
||||
}
|
||||
else {
|
||||
/* timeout */
|
||||
failf(data, "SSL connection timeout");
|
||||
return CURLE_OPERATION_TIMEDOUT;
|
||||
}
|
||||
}
|
||||
/* socket is readable or writable */
|
||||
}
|
||||
|
||||
/* Run transaction, and return to the caller if it failed or if
|
||||
* this connection is part of a multi handle and this loop would
|
||||
* execute again. This permits the owner of a multi handle to
|
||||
* abort a connection attempt before step2 has completed while
|
||||
* ensuring that a client using select() or epoll() will always
|
||||
* have a valid fdset to wait on.
|
||||
*/
|
||||
retcode = cyassl_connect_step2(conn, sockindex);
|
||||
if(retcode || (nonblocking &&
|
||||
(ssl_connect_2 == connssl->connecting_state ||
|
||||
ssl_connect_2_reading == connssl->connecting_state ||
|
||||
ssl_connect_2_writing == connssl->connecting_state)))
|
||||
return retcode;
|
||||
|
||||
} /* repeat step2 until all transactions are done. */
|
||||
|
||||
if(ssl_connect_3==connssl->connecting_state) {
|
||||
retcode = cyassl_connect_step3(conn, sockindex);
|
||||
if(retcode)
|
||||
return retcode;
|
||||
}
|
||||
|
||||
if(ssl_connect_done==connssl->connecting_state) {
|
||||
connssl->state = ssl_connection_complete;
|
||||
conn->recv[sockindex] = cyassl_recv;
|
||||
conn->send[sockindex] = cyassl_send;
|
||||
*done = TRUE;
|
||||
}
|
||||
else
|
||||
*done = FALSE;
|
||||
|
||||
/* Reset our connect state machine */
|
||||
connssl->connecting_state = ssl_connect_1;
|
||||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
|
||||
CURLcode
|
||||
Curl_cyassl_connect_nonblocking(struct connectdata *conn,
|
||||
int sockindex,
|
||||
bool *done)
|
||||
{
|
||||
return cyassl_connect_common(conn, sockindex, TRUE, done);
|
||||
}
|
||||
|
||||
|
||||
CURLcode
|
||||
Curl_cyassl_connect(struct connectdata *conn,
|
||||
int sockindex)
|
||||
{
|
||||
CURLcode retcode;
|
||||
bool done = FALSE;
|
||||
|
||||
retcode = cyassl_connect_common(conn, sockindex, FALSE, &done);
|
||||
if(retcode)
|
||||
return retcode;
|
||||
|
||||
DEBUGASSERT(done);
|
||||
|
||||
return CURLE_OK;
|
||||
}
|
||||
|
||||
#endif
|
||||
59
lib/cyassl.h
Normal file
59
lib/cyassl.h
Normal file
@ -0,0 +1,59 @@
|
||||
#ifndef HEADER_CURL_CYASSL_H
|
||||
#define HEADER_CURL_CYASSL_H
|
||||
/***************************************************************************
|
||||
* _ _ ____ _
|
||||
* Project ___| | | | _ \| |
|
||||
* / __| | | | |_) | |
|
||||
* | (__| |_| | _ <| |___
|
||||
* \___|\___/|_| \_\_____|
|
||||
*
|
||||
* Copyright (C) 1998 - 2011, 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.
|
||||
*
|
||||
***************************************************************************/
|
||||
|
||||
#ifdef USE_CYASSL
|
||||
|
||||
CURLcode Curl_cyassl_connect(struct connectdata *conn, int sockindex);
|
||||
bool Curl_cyassl_data_pending(const struct connectdata* conn,int connindex);
|
||||
int Curl_cyassl_shutdown(struct connectdata* conn, int sockindex);
|
||||
|
||||
/* tell CyaSSL to close down all open information regarding connections (and
|
||||
thus session ID caching etc) */
|
||||
void Curl_cyassl_close_all(struct SessionHandle *data);
|
||||
|
||||
/* close a SSL connection */
|
||||
void Curl_cyassl_close(struct connectdata *conn, int sockindex);
|
||||
|
||||
void Curl_cyassl_session_free(void *ptr);
|
||||
size_t Curl_cyassl_version(char *buffer, size_t size);
|
||||
int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex);
|
||||
|
||||
/* API setup for CyaSSL */
|
||||
#define curlssl_init Curl_cyassl_init
|
||||
#define curlssl_cleanup()
|
||||
#define curlssl_connect Curl_cyassl_connect
|
||||
#define curlssl_connect_nonblocking Curl_cyassl_connect_nonblocking
|
||||
#define curlssl_session_free(x) Curl_cyassl_session_free(x)
|
||||
#define curlssl_close_all Curl_cyassl_close_all
|
||||
#define curlssl_close Curl_cyassl_close
|
||||
#define curlssl_shutdown(x,y) Curl_cyassl_shutdown(x,y)
|
||||
#define curlssl_set_engine(x,y) (x=x, y=y, CURLE_FAILED_INIT)
|
||||
#define curlssl_set_engine_default(x) (x=x, CURLE_FAILED_INIT)
|
||||
#define curlssl_engines_list(x) (x=x, (struct curl_slist *)NULL)
|
||||
#define curlssl_version Curl_cyassl_version
|
||||
#define curlssl_check_cxn(x) (x=x, -1)
|
||||
#define curlssl_data_pending(x,y) Curl_cyassl_data_pending(x,y)
|
||||
|
||||
#endif /* USE_CYASSL */
|
||||
#endif /* HEADER_CURL_CYASSL_H */
|
||||
Loading…
Reference in New Issue
Block a user