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29 
30 // A wrapper for libcurl to do HTTP Uploads, to support easy mocking
31 // and unit testing of the HTTPUpload class.
32 
33 #ifndef COMMON_LINUX_LIBCURL_WRAPPER_H_
34 #define COMMON_LINUX_LIBCURL_WRAPPER_H_
35 
36 #include <string>
37 #include <map>
38 
39 #include "common/using_std_string.h"
40 #include "third_party/curl/curl.h"
41 
42 namespace google_breakpad {
43 class LibcurlWrapper {
44  public:
45   LibcurlWrapper();
46   ~LibcurlWrapper();
47   virtual bool Init();
48   virtual bool SetProxy(const string& proxy_host,
49                         const string& proxy_userpwd);
50   virtual bool AddFile(const string& upload_file_path,
51                        const string& basename);
52   virtual bool SendRequest(const string& url,
53                            const std::map<string, string>& parameters,
54                            int* http_status_code,
55                            string* http_header_data,
56                            string* http_response_data);
57  private:
58   // This function initializes class state corresponding to function
59   // pointers into the CURL library.
60   bool SetFunctionPointers();
61 
62   bool init_ok_;                 // Whether init succeeded
63   void* curl_lib_;               // Pointer to result of dlopen() on
64                                  // curl library
65   string last_curl_error_;  // The text of the last error when
66                                  // dealing
67   // with CURL.
68 
69   CURL *curl_;                   // Pointer for handle for CURL calls.
70 
71   CURL* (*easy_init_)(void);
72 
73   // Stateful pointers for calling into curl_formadd()
74   struct curl_httppost *formpost_;
75   struct curl_httppost *lastptr_;
76   struct curl_slist *headerlist_;
77 
78   // Function pointers into CURL library
79   CURLcode (*easy_setopt_)(CURL *, CURLoption, ...);
80   CURLFORMcode (*formadd_)(struct curl_httppost **,
81                            struct curl_httppost **, ...);
82   struct curl_slist* (*slist_append_)(struct curl_slist *, const char *);
83   void (*slist_free_all_)(struct curl_slist *);
84   CURLcode (*easy_perform_)(CURL *);
85   const char* (*easy_strerror_)(CURLcode);
86   void (*easy_cleanup_)(CURL *);
87   CURLcode (*easy_getinfo_)(CURL *, CURLINFO info, ...);
88   void (*formfree_)(struct curl_httppost *);
89 
90 };
91 }
92 
93 #endif  // COMMON_LINUX_LIBCURL_WRAPPER_H_
94