michael@0: // Copyright (c) 2009, Google Inc.
michael@0: // All rights reserved.
michael@0: //
michael@0: // Redistribution and use in source and binary forms, with or without
michael@0: // modification, are permitted provided that the following conditions are
michael@0: // met:
michael@0: //
michael@0: //     * Redistributions of source code must retain the above copyright
michael@0: // notice, this list of conditions and the following disclaimer.
michael@0: //     * Redistributions in binary form must reproduce the above
michael@0: // copyright notice, this list of conditions and the following disclaimer
michael@0: // in the documentation and/or other materials provided with the
michael@0: // distribution.
michael@0: //     * Neither the name of Google Inc. nor the names of its
michael@0: // contributors may be used to endorse or promote products derived from
michael@0: // this software without specific prior written permission.
michael@0: //
michael@0: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0: // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
michael@0: // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
michael@0: // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
michael@0: // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0: // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0: // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0: // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
michael@0: // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0: 
michael@0: // A wrapper for libcurl to do HTTP Uploads, to support easy mocking
michael@0: // and unit testing of the HTTPUpload class.
michael@0: 
michael@0: #include <string>
michael@0: #include <map>
michael@0: 
michael@0: #include "common/using_std_string.h"
michael@0: #include "third_party/curl/curl.h"
michael@0: 
michael@0: namespace google_breakpad {
michael@0: class LibcurlWrapper {
michael@0:  public:
michael@0:   LibcurlWrapper();
michael@0:   virtual bool Init();
michael@0:   virtual bool SetProxy(const string& proxy_host,
michael@0:                         const string& proxy_userpwd);
michael@0:   virtual bool AddFile(const string& upload_file_path,
michael@0:                        const string& basename);
michael@0:   virtual bool SendRequest(const string& url,
michael@0:                            const std::map<string, string>& parameters,
michael@0:                            string* server_response);
michael@0:  private:
michael@0:   // This function initializes class state corresponding to function
michael@0:   // pointers into the CURL library.
michael@0:   bool SetFunctionPointers();
michael@0: 
michael@0:   bool init_ok_;                 // Whether init succeeded
michael@0:   void* curl_lib_;               // Pointer to result of dlopen() on
michael@0:                                  // curl library
michael@0:   string last_curl_error_;  // The text of the last error when
michael@0:                                  // dealing
michael@0:   // with CURL.
michael@0: 
michael@0:   CURL *curl_;                   // Pointer for handle for CURL calls.
michael@0: 
michael@0:   CURL* (*easy_init_)(void);
michael@0: 
michael@0:   // Stateful pointers for calling into curl_formadd()
michael@0:   struct curl_httppost *formpost_;
michael@0:   struct curl_httppost *lastptr_;
michael@0:   struct curl_slist *headerlist_;
michael@0: 
michael@0:   // Function pointers into CURL library
michael@0:   CURLcode (*easy_setopt_)(CURL *, CURLoption, ...);
michael@0:   CURLFORMcode (*formadd_)(struct curl_httppost **,
michael@0:                            struct curl_httppost **, ...);
michael@0:   struct curl_slist* (*slist_append_)(struct curl_slist *, const char *);
michael@0:   void (*slist_free_all_)(struct curl_slist *);
michael@0:   CURLcode (*easy_perform_)(CURL *);
michael@0:   const char* (*easy_strerror_)(CURLcode);
michael@0:   void (*easy_cleanup_)(CURL *);
michael@0:   void (*formfree_)(struct curl_httppost *);
michael@0: 
michael@0: };
michael@0: }