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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   virtual ~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                            long* http_status_code,
55                            string* http_header_data,
56                            string* http_response_data);
57   bool SendGetRequest(const string& url,
58                       long* http_status_code,
59                       string* http_header_data,
60                       string* http_response_data);
61   bool SendPutRequest(const string& url,
62                       const string& path,
63                       long* http_status_code,
64                       string* http_header_data,
65                       string* http_response_data);
66   bool SendSimplePostRequest(const string& url,
67                              const string& body,
68                              const string& content_type,
69                              long* http_status_code,
70                              string* http_header_data,
71                              string* http_response_data);
72 
73  private:
74   // This function initializes class state corresponding to function
75   // pointers into the CURL library.
76   bool SetFunctionPointers();
77 
78   bool SendRequestInner(const string& url,
79                         long* http_status_code,
80                         string* http_header_data,
81                         string* http_response_data);
82 
83   void Reset();
84 
85   bool CheckInit();
86 
87   bool init_ok_;                 // Whether init succeeded
88   void* curl_lib_;               // Pointer to result of dlopen() on
89                                  // curl library
90   string last_curl_error_;  // The text of the last error when
91                                  // dealing
92   // with CURL.
93 
94   CURL *curl_;                   // Pointer for handle for CURL calls.
95 
96   CURL* (*easy_init_)(void);
97 
98   // Stateful pointers for calling into curl_formadd()
99   struct curl_httppost *formpost_;
100   struct curl_httppost *lastptr_;
101   struct curl_slist *headerlist_;
102 
103   // Function pointers into CURL library
104   CURLcode (*easy_setopt_)(CURL *, CURLoption, ...);
105   CURLFORMcode (*formadd_)(struct curl_httppost **,
106                            struct curl_httppost **, ...);
107   struct curl_slist* (*slist_append_)(struct curl_slist *, const char *);
108   void (*slist_free_all_)(struct curl_slist *);
109   CURLcode (*easy_perform_)(CURL *);
110   const char* (*easy_strerror_)(CURLcode);
111   void (*easy_cleanup_)(CURL *);
112   CURLcode (*easy_getinfo_)(CURL *, CURLINFO info, ...);
113   void (*easy_reset_)(CURL*);
114   void (*formfree_)(struct curl_httppost *);
115 
116 };
117 }
118 
119 #endif  // COMMON_LINUX_LIBCURL_WRAPPER_H_
120