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3 * Development, Inc. (UCAID) under one or more contributor license
4 * agreements. See the NOTICE file distributed with this work for
5 * additional information regarding copyright ownership.
7 * UCAID licenses this file to you under the Apache License,
8 * Version 2.0 (the "License"); you may not use this file except
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12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing,
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18 * language governing permissions and limitations under the License.
22 * CURLSOAPTransport.cpp
24 * libcurl-based SOAPTransport implementation.
28 #include "exceptions.h"
30 #include "security/CredentialCriteria.h"
31 #include "security/OpenSSLTrustEngine.h"
32 #include "security/OpenSSLCredential.h"
33 #include "soap/HTTPSOAPTransport.h"
34 #include "soap/OpenSSLSOAPTransport.h"
36 #include "util/Threads.h"
39 #include <curl/curl.h>
40 #include <openssl/x509_vfy.h>
42 using namespace xmltooling::logging;
43 using namespace xmltooling;
46 namespace xmltooling {
48 // Manages cache of socket connections via CURL handles.
49 class XMLTOOL_DLLLOCAL CURLPool
52 CURLPool() : m_size(0), m_lock(Mutex::create()),
53 m_log(Category::getInstance(XMLTOOLING_LOGCAT".SOAPTransport.CURL")) {}
56 CURL* get(const SOAPTransport::Address& addr);
57 void put(const char* from, const char* to, const char* endpoint, CURL* handle);
60 typedef map<string,vector<CURL*> > poolmap_t;
61 poolmap_t m_bindingMap;
62 list< vector<CURL*>* > m_pools;
68 static XMLTOOL_DLLLOCAL CURLPool* g_CURLPool = nullptr;
70 class XMLTOOL_DLLLOCAL CURLSOAPTransport : public HTTPSOAPTransport, public OpenSSLSOAPTransport
73 CURLSOAPTransport(const Address& addr)
74 : m_sender(addr.m_from ? addr.m_from : ""), m_peerName(addr.m_to ? addr.m_to : ""), m_endpoint(addr.m_endpoint),
75 m_handle(nullptr), m_headers(nullptr),
76 #ifndef XMLTOOLING_NO_XMLSEC
77 m_cred(nullptr), m_trustEngine(nullptr), m_peerResolver(nullptr), m_mandatory(false),
79 m_openssl_ops(SSL_OP_ALL|SSL_OP_NO_SSLv2), m_ssl_callback(nullptr), m_ssl_userptr(nullptr),
80 m_chunked(true), m_authenticated(false), m_cacheTag(nullptr) {
81 m_handle = g_CURLPool->get(addr);
82 curl_easy_setopt(m_handle,CURLOPT_URL,addr.m_endpoint);
83 curl_easy_setopt(m_handle,CURLOPT_CONNECTTIMEOUT,15);
84 curl_easy_setopt(m_handle,CURLOPT_TIMEOUT,30);
85 curl_easy_setopt(m_handle,CURLOPT_HTTPAUTH,0);
86 curl_easy_setopt(m_handle,CURLOPT_USERPWD,nullptr);
87 curl_easy_setopt(m_handle,CURLOPT_SSL_VERIFYHOST,2);
88 curl_easy_setopt(m_handle,CURLOPT_HEADERDATA,this);
89 m_headers=curl_slist_append(m_headers,"Content-Type: text/xml");
92 virtual ~CURLSOAPTransport() {
93 curl_slist_free_all(m_headers);
94 curl_easy_setopt(m_handle, CURLOPT_USERAGENT, nullptr);
95 curl_easy_setopt(m_handle, CURLOPT_ERRORBUFFER, nullptr);
96 curl_easy_setopt(m_handle, CURLOPT_PRIVATE, m_authenticated ? "secure" : nullptr); // Save off security "state".
97 g_CURLPool->put(m_sender.c_str(), m_peerName.c_str(), m_endpoint.c_str(), m_handle);
100 bool isConfidential() const {
101 return m_endpoint.find("https")==0;
104 bool setConnectTimeout(long timeout) {
105 return (curl_easy_setopt(m_handle,CURLOPT_CONNECTTIMEOUT,timeout)==CURLE_OK);
108 bool setTimeout(long timeout) {
109 return (curl_easy_setopt(m_handle,CURLOPT_TIMEOUT,timeout)==CURLE_OK);
112 bool setAuth(transport_auth_t authType, const char* username=nullptr, const char* password=nullptr);
114 bool setVerifyHost(bool verify) {
115 return (curl_easy_setopt(m_handle,CURLOPT_SSL_VERIFYHOST,verify ? 2 : 0)==CURLE_OK);
118 #ifndef XMLTOOLING_NO_XMLSEC
119 bool setCredential(const Credential* cred=nullptr) {
120 const OpenSSLCredential* down = dynamic_cast<const OpenSSLCredential*>(cred);
123 return (cred==nullptr);
130 const X509TrustEngine* trustEngine=nullptr,
131 const CredentialResolver* peerResolver=nullptr,
132 CredentialCriteria* criteria=nullptr,
135 const OpenSSLTrustEngine* down = dynamic_cast<const OpenSSLTrustEngine*>(trustEngine);
137 m_trustEngine = nullptr;
138 m_peerResolver = nullptr;
139 m_criteria = nullptr;
140 return (trustEngine==nullptr);
142 m_trustEngine = down;
143 m_peerResolver = peerResolver;
144 m_criteria = criteria;
145 m_mandatory = mandatory;
151 bool useChunkedEncoding(bool chunked=true) {
156 bool followRedirects(bool follow, unsigned int maxRedirs) {
158 curl_easy_setopt(m_handle, CURLOPT_FOLLOWLOCATION, (follow ? 1 : 0)) == CURLE_OK &&
159 curl_easy_setopt(m_handle, CURLOPT_MAXREDIRS, (follow ? maxRedirs : 0)) == CURLE_OK
163 bool setCacheTag(string* cacheTag) {
164 m_cacheTag = cacheTag;
168 bool setProviderOption(const char* provider, const char* option, const char* value);
170 void send(istream& in) {
174 void send(istream* in=nullptr);
180 bool isAuthenticated() const {
181 return m_authenticated;
184 void setAuthenticated(bool auth) {
185 m_authenticated = auth;
188 string getContentType() const;
189 long getStatusCode() const;
191 bool setRequestHeader(const char* name, const char* val) {
193 temp=temp + ": " + val;
194 m_headers=curl_slist_append(m_headers,temp.c_str());
198 const vector<string>& getResponseHeader(const char* val) const;
200 bool setSSLCallback(ssl_ctx_callback_fn fn, void* userptr=nullptr) {
202 m_ssl_userptr=userptr;
208 string m_sender,m_peerName,m_endpoint,m_simplecreds;
210 stringstream m_stream;
211 struct curl_slist* m_headers;
213 map<string,vector<string> > m_response_headers;
214 vector<string> m_saved_options;
215 #ifndef XMLTOOLING_NO_XMLSEC
216 const OpenSSLCredential* m_cred;
217 const OpenSSLTrustEngine* m_trustEngine;
218 const CredentialResolver* m_peerResolver;
219 CredentialCriteria* m_criteria;
223 ssl_ctx_callback_fn m_ssl_callback;
226 bool m_authenticated;
229 friend size_t XMLTOOL_DLLLOCAL curl_header_hook(void* ptr, size_t size, size_t nmemb, void* stream);
230 friend CURLcode XMLTOOL_DLLLOCAL xml_ssl_ctx_callback(CURL* curl, SSL_CTX* ssl_ctx, void* userptr);
231 friend int XMLTOOL_DLLLOCAL verify_callback(X509_STORE_CTX* x509_ctx, void* arg);
234 // libcurl callback functions
235 size_t XMLTOOL_DLLLOCAL curl_header_hook(void* ptr, size_t size, size_t nmemb, void* stream);
236 size_t XMLTOOL_DLLLOCAL curl_write_hook(void* ptr, size_t size, size_t nmemb, void* stream);
237 size_t XMLTOOL_DLLLOCAL curl_read_hook( void *ptr, size_t size, size_t nmemb, void *stream);
238 int XMLTOOL_DLLLOCAL curl_debug_hook(CURL* handle, curl_infotype type, char* data, size_t len, void* ptr);
239 CURLcode XMLTOOL_DLLLOCAL xml_ssl_ctx_callback(CURL* curl, SSL_CTX* ssl_ctx, void* userptr);
240 #ifndef XMLTOOLING_NO_XMLSEC
241 int XMLTOOL_DLLLOCAL verify_callback(X509_STORE_CTX* x509_ctx, void* arg);
244 SOAPTransport* CURLSOAPTransportFactory(const SOAPTransport::Address& addr)
246 return new CURLSOAPTransport(addr);
250 void xmltooling::initSOAPTransports()
252 g_CURLPool=new CURLPool();
255 void xmltooling::termSOAPTransports()
258 g_CURLPool = nullptr;
261 CURLPool::~CURLPool()
263 for (poolmap_t::iterator i=m_bindingMap.begin(); i!=m_bindingMap.end(); i++) {
264 for (vector<CURL*>::iterator j=i->second.begin(); j!=i->second.end(); j++)
265 curl_easy_cleanup(*j);
270 CURL* CURLPool::get(const SOAPTransport::Address& addr)
273 xmltooling::NDC("get");
275 m_log.debug("getting connection handle to %s", addr.m_endpoint);
276 string key(addr.m_endpoint);
278 key = key + '|' + addr.m_from;
280 key = key + '|' + addr.m_to;
282 poolmap_t::iterator i=m_bindingMap.find(key);
284 if (i!=m_bindingMap.end()) {
285 // Move this pool to the front of the list.
286 m_pools.remove(&(i->second));
287 m_pools.push_front(&(i->second));
289 // If a free connection exists, return it.
290 if (!(i->second.empty())) {
291 CURL* handle=i->second.back();
292 i->second.pop_back();
295 m_log.debug("returning existing connection handle from pool");
301 m_log.debug("nothing free in pool, returning new connection handle");
303 // Create a new connection and set non-varying options.
304 CURL* handle=curl_easy_init();
307 curl_easy_setopt(handle,CURLOPT_NOPROGRESS,1);
308 curl_easy_setopt(handle,CURLOPT_NOSIGNAL,1);
309 curl_easy_setopt(handle,CURLOPT_FAILONERROR,1);
310 curl_easy_setopt(handle,CURLOPT_SSL_CIPHER_LIST,"ALL:!aNULL:!LOW:!EXPORT:!SSLv2");
311 // Verification of the peer is via TrustEngine only.
312 curl_easy_setopt(handle,CURLOPT_SSL_VERIFYPEER,0);
313 curl_easy_setopt(handle,CURLOPT_CAINFO,nullptr);
314 curl_easy_setopt(handle,CURLOPT_HEADERFUNCTION,&curl_header_hook);
315 curl_easy_setopt(handle,CURLOPT_WRITEFUNCTION,&curl_write_hook);
316 curl_easy_setopt(handle,CURLOPT_DEBUGFUNCTION,&curl_debug_hook);
320 void CURLPool::put(const char* from, const char* to, const char* endpoint, CURL* handle)
322 string key(endpoint);
324 key = key + '|' + from;
326 key = key + '|' + to;
328 poolmap_t::iterator i=m_bindingMap.find(key);
329 if (i==m_bindingMap.end())
330 m_pools.push_front(&(m_bindingMap.insert(poolmap_t::value_type(key,vector<CURL*>(1,handle))).first->second));
332 i->second.push_back(handle);
334 CURL* killit=nullptr;
335 if (++m_size > 256) {
336 // Kick a handle out from the back of the bus.
338 vector<CURL*>* corpse=m_pools.back();
339 if (!corpse->empty()) {
340 killit=corpse->back();
346 // Move an empty pool up to the front so we don't keep hitting it.
348 m_pools.push_front(corpse);
353 curl_easy_cleanup(killit);
355 xmltooling::NDC("put");
357 m_log.info("conn_pool_max limit reached, dropping an old connection");
361 bool CURLSOAPTransport::setAuth(transport_auth_t authType, const char* username, const char* password)
363 if (authType==transport_auth_none) {
364 if (curl_easy_setopt(m_handle,CURLOPT_HTTPAUTH,0)!=CURLE_OK)
366 return (curl_easy_setopt(m_handle,CURLOPT_USERPWD,nullptr)==CURLE_OK);
370 case transport_auth_basic: flag = CURLAUTH_BASIC; break;
371 case transport_auth_digest: flag = CURLAUTH_DIGEST; break;
372 case transport_auth_ntlm: flag = CURLAUTH_NTLM; break;
373 case transport_auth_gss: flag = CURLAUTH_GSSNEGOTIATE; break;
374 default: return false;
376 if (curl_easy_setopt(m_handle,CURLOPT_HTTPAUTH,flag)!=CURLE_OK)
378 m_simplecreds = string(username ? username : "") + ':' + (password ? password : "");
379 return (curl_easy_setopt(m_handle,CURLOPT_USERPWD,m_simplecreds.c_str())==CURLE_OK);
382 bool CURLSOAPTransport::setProviderOption(const char* provider, const char* option, const char* value)
384 if (!provider || !option || !value) {
387 else if (!strcmp(provider, "OpenSSL")) {
388 if (!strcmp(option, "SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION") && (*value=='1' || *value=='t')) {
389 // If the new option to enable buggy rengotiation is available, set it.
390 // Otherwise, signal false if this is newer than 0.9.8k, because that
391 // means it's 0.9.8l, which blocks renegotiation, and therefore will
392 // not honor this request. Older versions are buggy, so behave as though
393 // the flag was set anyway, so we signal true.
394 #if defined(SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)
395 m_openssl_ops |= SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
397 #elif (OPENSSL_VERSION_NUMBER > 0x009080bfL)
405 else if (strcmp(provider, "CURL")) {
409 // For libcurl, the option is an enum and the value type depends on the option.
410 CURLoption opt = static_cast<CURLoption>(strtol(option, nullptr, 10));
411 if (opt < CURLOPTTYPE_OBJECTPOINT)
412 return (curl_easy_setopt(m_handle, opt, strtol(value, nullptr, 10)) == CURLE_OK);
413 #ifdef CURLOPTTYPE_OFF_T
414 else if (opt < CURLOPTTYPE_OFF_T) {
416 m_saved_options.push_back(value);
417 return (curl_easy_setopt(m_handle, opt, value ? m_saved_options.back().c_str() : nullptr) == CURLE_OK);
419 # ifdef HAVE_CURL_OFF_T
420 else if (sizeof(curl_off_t) == sizeof(long))
421 return (curl_easy_setopt(m_handle, opt, strtol(value, nullptr, 10)) == CURLE_OK);
423 else if (sizeof(off_t) == sizeof(long))
424 return (curl_easy_setopt(m_handle, opt, strtol(value, nullptr, 10)) == CURLE_OK);
430 m_saved_options.push_back(value);
431 return (curl_easy_setopt(m_handle, opt, value ? m_saved_options.back().c_str() : nullptr) == CURLE_OK);
436 const vector<string>& CURLSOAPTransport::getResponseHeader(const char* name) const
438 static vector<string> emptyVector;
440 map<string,vector<string> >::const_iterator i=m_response_headers.find(name);
441 if (i!=m_response_headers.end())
444 for (map<string,vector<string> >::const_iterator j=m_response_headers.begin(); j!=m_response_headers.end(); j++) {
445 #ifdef HAVE_STRCASECMP
446 if (!strcasecmp(j->first.c_str(), name))
448 if (!stricmp(j->first.c_str(), name))
456 string CURLSOAPTransport::getContentType() const
458 char* content_type=nullptr;
459 curl_easy_getinfo(m_handle,CURLINFO_CONTENT_TYPE,&content_type);
460 return content_type ? content_type : "";
463 long CURLSOAPTransport::getStatusCode() const
466 if (curl_easy_getinfo(m_handle, CURLINFO_RESPONSE_CODE, &code) != CURLE_OK)
471 void CURLSOAPTransport::send(istream* in)
474 xmltooling::NDC ndc("send");
476 Category& log=Category::getInstance(XMLTOOLING_LOGCAT".SOAPTransport.CURL");
477 Category& log_curl=Category::getInstance(XMLTOOLING_LOGCAT".libcurl");
479 // For this implementation, it's sufficient to check for https as a sign of transport security.
480 if (m_mandatory && !isConfidential())
481 throw IOException("Blocking unprotected HTTP request, transport authentication by server required.");
485 // By this time, the handle has been prepared with the URL to use and the
486 // caller should have executed any set functions to manipulate it.
488 // Setup standard per-call curl properties.
489 curl_easy_setopt(m_handle,CURLOPT_DEBUGDATA,&log_curl);
490 curl_easy_setopt(m_handle,CURLOPT_FILE,&m_stream);
491 if (m_chunked && in) {
492 curl_easy_setopt(m_handle,CURLOPT_POST,1);
493 m_headers=curl_slist_append(m_headers,"Transfer-Encoding: chunked");
494 curl_easy_setopt(m_handle,CURLOPT_READFUNCTION,&curl_read_hook);
495 curl_easy_setopt(m_handle,CURLOPT_READDATA,in);
501 msg.append(buf,in->gcount());
503 curl_easy_setopt(m_handle,CURLOPT_POST,1);
504 curl_easy_setopt(m_handle,CURLOPT_READFUNCTION,nullptr);
505 curl_easy_setopt(m_handle,CURLOPT_POSTFIELDS,msg.c_str());
506 curl_easy_setopt(m_handle,CURLOPT_POSTFIELDSIZE,msg.length());
509 curl_easy_setopt(m_handle,CURLOPT_HTTPGET,1);
510 curl_easy_setopt(m_handle,CURLOPT_FOLLOWLOCATION,1);
511 curl_easy_setopt(m_handle,CURLOPT_MAXREDIRS,6);
514 char curl_errorbuf[CURL_ERROR_SIZE];
516 curl_easy_setopt(m_handle,CURLOPT_ERRORBUFFER,curl_errorbuf);
517 if (log_curl.isDebugEnabled())
518 curl_easy_setopt(m_handle,CURLOPT_VERBOSE,1);
520 // Check for cache tag.
521 if (m_cacheTag && !m_cacheTag->empty()) {
522 string hdr("If-None-Match: ");
524 m_headers = curl_slist_append(m_headers, hdr.c_str());
527 m_useragent = XMLToolingConfig::getConfig().user_agent;
528 if (!m_useragent.empty()) {
529 curl_version_info_data* curlver = curl_version_info(CURLVERSION_NOW);
530 m_useragent += " libcurl/";
532 m_useragent = m_useragent + curlver->version + ' ' + curlver->ssl_version;
534 m_useragent = m_useragent + LIBCURL_VERSION + ' ' + OPENSSL_VERSION_TEXT;
535 curl_easy_setopt(m_handle, CURLOPT_USERAGENT, m_useragent.c_str());
538 // Set request headers.
539 curl_easy_setopt(m_handle,CURLOPT_HTTPHEADER,m_headers);
541 #ifndef XMLTOOLING_NO_XMLSEC
542 if (m_ssl_callback || m_cred || m_trustEngine) {
544 if (m_ssl_callback) {
546 curl_easy_setopt(m_handle,CURLOPT_SSL_CTX_FUNCTION,xml_ssl_ctx_callback);
547 curl_easy_setopt(m_handle,CURLOPT_SSL_CTX_DATA,this);
549 // Restore security "state". Necessary because the callback only runs
550 // when handshakes occur. Even new TCP connections won't execute it.
552 curl_easy_getinfo(m_handle,CURLINFO_PRIVATE,&priv);
554 m_authenticated=true;
557 curl_easy_setopt(m_handle,CURLOPT_SSL_CTX_FUNCTION,nullptr);
558 curl_easy_setopt(m_handle,CURLOPT_SSL_CTX_DATA,nullptr);
562 log.debug("sending SOAP message to %s", m_endpoint.c_str());
563 if (curl_easy_perform(m_handle) != CURLE_OK) {
565 string("CURLSOAPTransport failed while contacting SOAP endpoint (") + m_endpoint + "): " +
566 (curl_errorbuf[0] ? curl_errorbuf : "no further information available"));
569 // Check for outgoing cache tag.
571 const vector<string>& tags = getResponseHeader("ETag");
573 *m_cacheTag = tags.front();
577 // callback to buffer headers from server
578 size_t xmltooling::curl_header_hook(void* ptr, size_t size, size_t nmemb, void* stream)
580 // only handle single-byte data
583 CURLSOAPTransport* ctx = reinterpret_cast<CURLSOAPTransport*>(stream);
584 char* buf = (char*)malloc(nmemb + 1);
586 memset(buf,0,nmemb + 1);
587 memcpy(buf,ptr,nmemb);
588 char* sep=(char*)strchr(buf,':');
593 char* white=buf+nmemb-1;
594 while (isspace(*white))
596 ctx->m_response_headers[buf].push_back(sep);
604 // callback to send data to server
605 size_t xmltooling::curl_read_hook(void* ptr, size_t size, size_t nmemb, void* stream)
607 // stream is actually an istream pointer
608 istream* buf=reinterpret_cast<istream*>(stream);
609 buf->read(reinterpret_cast<char*>(ptr),size*nmemb);
610 return buf->gcount();
613 // callback to buffer data from server
614 size_t xmltooling::curl_write_hook(void* ptr, size_t size, size_t nmemb, void* stream)
616 size_t len = size*nmemb;
617 reinterpret_cast<stringstream*>(stream)->write(reinterpret_cast<const char*>(ptr),len);
621 // callback for curl debug data
622 int xmltooling::curl_debug_hook(CURL* handle, curl_infotype type, char* data, size_t len, void* ptr)
624 // *ptr is actually a logging object
626 CategoryStream log=reinterpret_cast<Category*>(ptr)->debugStream();
627 for (unsigned char* ch=(unsigned char*)data; len && (isprint(*ch) || isspace(*ch)); len--)
632 #ifndef XMLTOOLING_NO_XMLSEC
633 int xmltooling::verify_callback(X509_STORE_CTX* x509_ctx, void* arg)
635 Category& log=Category::getInstance(XMLTOOLING_LOGCAT".SOAPTransport.CURL");
636 log.debug("invoking custom X.509 verify callback");
637 #if (OPENSSL_VERSION_NUMBER >= 0x00907000L)
638 CURLSOAPTransport* ctx = reinterpret_cast<CURLSOAPTransport*>(arg);
640 // Yes, this sucks. I'd use TLS, but there's no really obvious spot to put the thread key
641 // and global variables suck too. We can't access the X509_STORE_CTX depth directly because
642 // OpenSSL only copies it into the context if it's >=0, and the unsigned pointer may be
643 // negative in the SSL structure's int member.
644 CURLSOAPTransport* ctx = reinterpret_cast<CURLSOAPTransport*>(
645 SSL_get_verify_depth(
646 reinterpret_cast<SSL*>(X509_STORE_CTX_get_ex_data(x509_ctx,SSL_get_ex_data_X509_STORE_CTX_idx()))
652 if (ctx->m_criteria) {
653 ctx->m_criteria->setUsage(Credential::TLS_CREDENTIAL);
654 // Bypass name check (handled for us by curl).
655 ctx->m_criteria->setPeerName(nullptr);
656 success = ctx->m_trustEngine->validate(x509_ctx->cert,x509_ctx->untrusted,*(ctx->m_peerResolver),ctx->m_criteria);
659 // Bypass name check (handled for us by curl).
660 CredentialCriteria cc;
661 cc.setUsage(Credential::TLS_CREDENTIAL);
662 success = ctx->m_trustEngine->validate(x509_ctx->cert,x509_ctx->untrusted,*(ctx->m_peerResolver),&cc);
666 log.error("supplied TrustEngine failed to validate SSL/TLS server certificate:");
667 if (x509_ctx->cert) {
668 BIO* b = BIO_new(BIO_s_mem());
669 X509_print(b, x509_ctx->cert);
670 BUF_MEM* bptr = nullptr;
671 BIO_get_mem_ptr(b, &bptr);
672 if (bptr && bptr->length > 0) {
673 string s(bptr->data, bptr->length);
678 x509_ctx->error = X509_V_ERR_APPLICATION_VERIFICATION; // generic error, check log for plugin specifics
679 ctx->setAuthenticated(false);
680 return ctx->m_mandatory ? 0 : 1;
683 // Signal success. Hopefully it doesn't matter what's actually in the structure now.
684 ctx->setAuthenticated(true);
689 // callback to invoke a caller-defined SSL callback
690 CURLcode xmltooling::xml_ssl_ctx_callback(CURL* curl, SSL_CTX* ssl_ctx, void* userptr)
692 CURLSOAPTransport* conf = reinterpret_cast<CURLSOAPTransport*>(userptr);
694 // Default flags manually disable SSLv2 so we're not dependent on libcurl to do it.
695 // Also disable the ticket option where implemented, since this breaks a variety
696 // of servers. Newer libcurl also does this for us.
697 #ifdef SSL_OP_NO_TICKET
698 SSL_CTX_set_options(ssl_ctx, conf->m_openssl_ops|SSL_OP_NO_TICKET);
700 SSL_CTX_set_options(ssl_ctx, conf->m_openssl_ops);
703 #ifndef XMLTOOLING_NO_XMLSEC
705 conf->m_cred->attach(ssl_ctx);
707 if (conf->m_trustEngine) {
708 SSL_CTX_set_verify(ssl_ctx,SSL_VERIFY_PEER,nullptr);
709 #if (OPENSSL_VERSION_NUMBER >= 0x00907000L)
710 // With 0.9.7, we can pass a callback argument directly.
711 SSL_CTX_set_cert_verify_callback(ssl_ctx,verify_callback,userptr);
713 // With 0.9.6, there's no argument, so we're going to use a really embarrassing hack and
714 // stuff the argument in the depth property where it will get copied to the context object
715 // that's handed to the callback.
716 SSL_CTX_set_cert_verify_callback(ssl_ctx,reinterpret_cast<int (*)()>(verify_callback),nullptr);
717 SSL_CTX_set_verify_depth(ssl_ctx,reinterpret_cast<int>(userptr));
722 if (conf->m_ssl_callback && !conf->m_ssl_callback(conf, ssl_ctx, conf->m_ssl_userptr))
723 return CURLE_SSL_CERTPROBLEM;