http.h

   1 #ifndef HTTP_H
   2 #define HTTP_H
   3
   4 #include "cache.h"
   5
   6 #include <curl/curl.h>
   7 #include <curl/easy.h>
   8
   9 #if LIBCURL_VERSION_NUM >= 0x071000
  10 #define USE_CURL_MULTI
  11 #define DEFAULT_MAX_REQUESTS 5
  12 #endif
  13
  14 #if LIBCURL_VERSION_NUM < 0x070704
  15 #define curl_global_cleanup() do { /* nothing */ } while(0)
  16 #endif
  17 #if LIBCURL_VERSION_NUM < 0x070800
  18 #define curl_global_init(a) do { /* nothing */ } while(0)
  19 #endif
  20
  21 #if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
  22 #define NO_CURL_EASY_DUPHANDLE
  23 #endif
  24
  25 #if LIBCURL_VERSION_NUM < 0x070a03
  26 #define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
  27 #endif
  28
  29 struct slot_results
  30 {
  31         CURLcode curl_result;
  32         long http_code;
  33 };
  34
  35 struct active_request_slot
  36 {
  37         CURL *curl;
  38         FILE *local;
  39         int in_use;
  40         CURLcode curl_result;
  41         long http_code;
  42         int *finished;
  43         struct slot_results *results;
  44         void *callback_data;
  45         void (*callback_func)(void *data);
  46         struct active_request_slot *next;
  47 };
  48
  49 struct buffer
  50 {
  51         size_t posn;
  52         size_t size;
  53         void *buffer;
  54 };
  55
  56 /* Curl request read/write callbacks */
  57 extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
  58                            struct buffer *buffer);
  59 extern size_t fwrite_buffer(const void *ptr, size_t eltsize,
  60                             size_t nmemb, struct buffer *buffer);
  61 extern size_t fwrite_null(const void *ptr, size_t eltsize,
  62                           size_t nmemb, struct buffer *buffer);
  63
  64 /* Slot lifecycle functions */
  65 extern struct active_request_slot *get_active_slot(void);
  66 extern int start_active_slot(struct active_request_slot *slot);
  67 extern void run_active_slot(struct active_request_slot *slot);
  68 extern void finish_all_active_slots(void);
  69 extern void release_active_slot(struct active_request_slot *slot);
  70
  71 #ifdef USE_CURL_MULTI
  72 extern void fill_active_slots(void);
  73 extern void add_fill_function(void *data, int (*fill)(void *));
  74 extern void step_active_slots(void);
  75 #endif
  76
  77 extern void http_init(void);
  78 extern void http_cleanup(void);
  79
  80 extern int data_received;
  81 extern int active_requests;
  82
  83 extern char curl_errorstr[CURL_ERROR_SIZE];
  84
  85 #endif /* HTTP_H */