The Tor Browser: toolkit/crashreporter/google-breakpad/src/common/linux/libcurl

toolkit/crashreporter/google-breakpad/src/common/linux/libcurl_wrapper.cc@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/common/linux/libcurl_wrapper.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright (c) 2009, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <dlfcn.h>
 #include <iostream>
 #include <string>
 #include "common/linux/libcurl_wrapper.h"
 #include "common/using_std_string.h"
 namespace google_breakpad {
 LibcurlWrapper::LibcurlWrapper()
     : init_ok_(false),
       formpost_(NULL),
       lastptr_(NULL),
       headerlist_(NULL) {
   curl_lib_ = dlopen("libcurl.so", RTLD_NOW);
   if (!curl_lib_) {
     curl_lib_ = dlopen("libcurl.so.4", RTLD_NOW);
   }
   if (!curl_lib_) {
     curl_lib_ = dlopen("libcurl.so.3", RTLD_NOW);
   }
   if (!curl_lib_) {
     std::cout << "Could not find libcurl via dlopen";
     return;
   }
   std::cout << "LibcurlWrapper init succeeded";
   init_ok_ = true;
   return;
 }
 bool LibcurlWrapper::SetProxy(const string& proxy_host,
                               const string& proxy_userpwd) {
   if (!init_ok_) {
     return false;
   }
   // Set proxy information if necessary.
   if (!proxy_host.empty()) {
     (*easy_setopt_)(curl_, CURLOPT_PROXY, proxy_host.c_str());
   } else {
     std::cout << "SetProxy called with empty proxy host.";
     return false;
   }
   if (!proxy_userpwd.empty()) {
     (*easy_setopt_)(curl_, CURLOPT_PROXYUSERPWD, proxy_userpwd.c_str());
   } else {
     std::cout << "SetProxy called with empty proxy username/password.";
     return false;
   }
   std::cout << "Set proxy host to " << proxy_host;
   return true;
 }
 bool LibcurlWrapper::AddFile(const string& upload_file_path,
                              const string& basename) {
   if (!init_ok_) {
     return false;
   }
   std::cout << "Adding " << upload_file_path << " to form upload.";
   // Add form file.
   (*formadd_)(&formpost_, &lastptr_,
               CURLFORM_COPYNAME, basename.c_str(),
               CURLFORM_FILE, upload_file_path.c_str(),
               CURLFORM_END);
   return true;
 }
 // Callback to get the response data from server.
 static size_t WriteCallback(void *ptr, size_t size,
                             size_t nmemb, void *userp) {
   if (!userp)
     return 0;
   string *response = reinterpret_cast<string *>(userp);
   size_t real_size = size * nmemb;
   response->append(reinterpret_cast<char *>(ptr), real_size);
   return real_size;
 }
 bool LibcurlWrapper::SendRequest(const string& url,
                                  const std::map<string, string>& parameters,
                                  string* server_response) {
   (*easy_setopt_)(curl_, CURLOPT_URL, url.c_str());
   std::map<string, string>::const_iterator iter = parameters.begin();
   for (; iter != parameters.end(); ++iter)
     (*formadd_)(&formpost_, &lastptr_,
                 CURLFORM_COPYNAME, iter->first.c_str(),
                 CURLFORM_COPYCONTENTS, iter->second.c_str(),
                 CURLFORM_END);
   (*easy_setopt_)(curl_, CURLOPT_HTTPPOST, formpost_);
   if (server_response != NULL) {
     (*easy_setopt_)(curl_, CURLOPT_WRITEFUNCTION, WriteCallback);
     (*easy_setopt_)(curl_, CURLOPT_WRITEDATA,
                      reinterpret_cast<void *>(server_response));
   }
   CURLcode err_code = CURLE_OK;
   err_code = (*easy_perform_)(curl_);
   easy_strerror_ = reinterpret_cast<const char* (*)(CURLcode)>
                        (dlsym(curl_lib_, "curl_easy_strerror"));
 #ifndef NDEBUG
   if (err_code != CURLE_OK)
     fprintf(stderr, "Failed to send http request to %s, error: %s\n",
             url.c_str(),
             (*easy_strerror_)(err_code));
 #endif
   if (headerlist_ != NULL) {
     (*slist_free_all_)(headerlist_);
   }
   (*easy_cleanup_)(curl_);
   if (formpost_ != NULL) {
     (*formfree_)(formpost_);
   }
   return err_code == CURLE_OK;
 }
 bool LibcurlWrapper::Init() {
   if (!init_ok_) {
     std::cout << "Init_OK was not true in LibcurlWrapper::Init(), check earlier log messages";
     return false;
   }
   if (!SetFunctionPointers()) {
     std::cout << "Could not find function pointers";
     init_ok_ = false;
     return false;
   }
   curl_ = (*easy_init_)();
   last_curl_error_ = "No Error";
   if (!curl_) {
     dlclose(curl_lib_);
     std::cout << "Curl initialization failed";
     return false;
   }
   // Disable 100-continue header.
   char buf[] = "Expect:";
   headerlist_ = (*slist_append_)(headerlist_, buf);
   (*easy_setopt_)(curl_, CURLOPT_HTTPHEADER, headerlist_);
   return true;
 }
 #define SET_AND_CHECK_FUNCTION_POINTER(var, function_name, type) \
   var = reinterpret_cast<type>(dlsym(curl_lib_, function_name)); \
   if (!var) { \
     std::cout << "Could not find libcurl function " << function_name; \
     init_ok_ = false; \
     return false; \
   }
 bool LibcurlWrapper::SetFunctionPointers() {
   SET_AND_CHECK_FUNCTION_POINTER(easy_init_,
                                  "curl_easy_init",
                                  CURL*(*)());
   SET_AND_CHECK_FUNCTION_POINTER(easy_setopt_,
                                  "curl_easy_setopt",
                                  CURLcode(*)(CURL*, CURLoption, ...));
   SET_AND_CHECK_FUNCTION_POINTER(formadd_, "curl_formadd",
       CURLFORMcode(*)(curl_httppost**, curl_httppost**, ...));
   SET_AND_CHECK_FUNCTION_POINTER(slist_append_, "curl_slist_append",
       curl_slist*(*)(curl_slist*, const char*));
   SET_AND_CHECK_FUNCTION_POINTER(easy_perform_,
                                  "curl_easy_perform",
                                  CURLcode(*)(CURL*));
   SET_AND_CHECK_FUNCTION_POINTER(easy_cleanup_,
                                  "curl_easy_cleanup",
                                  void(*)(CURL*));
   SET_AND_CHECK_FUNCTION_POINTER(slist_free_all_,
                                  "curl_slist_free_all",
                                  void(*)(curl_slist*));
   SET_AND_CHECK_FUNCTION_POINTER(formfree_,
                                  "curl_formfree",
                                  void(*)(curl_httppost*));
   return true;
 }
 }

The Tor Browser / annotate

toolkit/crashreporter/google-breakpad/src/common/linux/libcurl_wrapper.cc@6474c204b198 (annotated)

toolkit/crashreporter/google-breakpad/src/common/linux/libcurl_wrapper.cc