1 // Copyright 2009 Google LLC 2 // 3 // Redistribution and use in source and binary forms, with or without 4 // modification, are permitted provided that the following conditions are 5 // met: 6 // 7 // * Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // * Redistributions in binary form must reproduce the above 10 // copyright notice, this list of conditions and the following disclaimer 11 // in the documentation and/or other materials provided with the 12 // distribution. 13 // * Neither the name of Google LLC nor the names of its 14 // contributors may be used to endorse or promote products derived from 15 // this software without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 // A wrapper for libcurl to do HTTP Uploads, to support easy mocking 30 // and unit testing of the HTTPUpload class. 31 32 #ifndef COMMON_LINUX_LIBCURL_WRAPPER_H_ 33 #define COMMON_LINUX_LIBCURL_WRAPPER_H_ 34 35 #include <string> 36 #include <map> 37 38 #include "common/using_std_string.h" 39 #include "third_party/curl/curl.h" 40 41 namespace google_breakpad { 42 43 // This class is only safe to be used on single-threaded code because of its 44 // usage of libcurl's curl_global_cleanup(). 45 class LibcurlWrapper { 46 public: 47 LibcurlWrapper(); 48 virtual ~LibcurlWrapper(); 49 virtual bool Init(); 50 virtual bool SetProxy(const string& proxy_host, 51 const string& proxy_userpwd); 52 virtual bool AddFile(const string& upload_file_path, 53 const string& basename); 54 virtual bool SendRequest(const string& url, 55 const std::map<string, string>& parameters, 56 long* http_status_code, 57 string* http_header_data, 58 string* http_response_data); 59 bool SendGetRequest(const string& url, 60 long* http_status_code, 61 string* http_header_data, 62 string* http_response_data); 63 bool SendPutRequest(const string& url, 64 const string& path, 65 long* http_status_code, 66 string* http_header_data, 67 string* http_response_data); 68 bool SendSimplePostRequest(const string& url, 69 const string& body, 70 const string& content_type, 71 long* http_status_code, 72 string* http_header_data, 73 string* http_response_data); 74 75 private: 76 // This function initializes class state corresponding to function 77 // pointers into the CURL library. 78 bool SetFunctionPointers(); 79 80 bool SendRequestInner(const string& url, 81 long* http_status_code, 82 string* http_header_data, 83 string* http_response_data); 84 85 void Reset(); 86 87 bool CheckInit(); 88 89 bool init_ok_; // Whether init succeeded 90 void* curl_lib_; // Pointer to result of dlopen() on 91 // curl library 92 string last_curl_error_; // The text of the last error when 93 // dealing 94 // with CURL. 95 96 CURL* curl_; // Pointer for handle for CURL calls. 97 98 CURL* (*easy_init_)(void); 99 100 // Stateful pointers for calling into curl_formadd() 101 struct curl_httppost* formpost_; 102 struct curl_httppost* lastptr_; 103 struct curl_slist* headerlist_; 104 105 // Function pointers into CURL library 106 CURLcode (*easy_setopt_)(CURL*, CURLoption, ...); 107 CURLFORMcode (*formadd_)(struct curl_httppost**, 108 struct curl_httppost**, ...); 109 struct curl_slist* (*slist_append_)(struct curl_slist*, const char*); 110 void (*slist_free_all_)(struct curl_slist*); 111 CURLcode (*easy_perform_)(CURL*); 112 const char* (*easy_strerror_)(CURLcode); 113 void (*easy_cleanup_)(CURL*); 114 CURLcode (*easy_getinfo_)(CURL*, CURLINFO info, ...); 115 void (*easy_reset_)(CURL*); 116 void (*formfree_)(struct curl_httppost*); 117 void (*global_cleanup_)(void); 118 119 }; 120 } 121 122 #endif // COMMON_LINUX_LIBCURL_WRAPPER_H_ 123