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 >= 0x070908
  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
  22 #define NO_CURL_EASY_DUPHANDLE
  23 #endif
  24
  25 struct slot_results
  26 {
  27         CURLcode curl_result;
  28         long http_code;
  29 };
  30
  31 struct active_request_slot
  32 {
  33         CURL *curl;
  34         FILE *local;
  35         int in_use;
  36         CURLcode curl_result;
  37         long http_code;
  38         int *finished;
  39         struct slot_results *results;
  40         void *callback_data;
  41         void (*callback_func)(void *data);
  42         struct active_request_slot *next;
  43 };
  44
  45 struct buffer
  46 {
  47         size_t posn;
  48         size_t size;
  49         void *buffer;
  50 };
  51
  52 /* Curl request read/write callbacks */
  53 extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
  54                            struct buffer *buffer);
  55 extern size_t fwrite_buffer(const void *ptr, size_t eltsize,
  56                             size_t nmemb, struct buffer *buffer);
  57 extern size_t fwrite_null(const void *ptr, size_t eltsize,
  58                           size_t nmemb, struct buffer *buffer);
  59
  60 /* Slot lifecycle functions */
  61 extern struct active_request_slot *get_active_slot(void);
  62 extern int start_active_slot(struct active_request_slot *slot);
  63 extern void run_active_slot(struct active_request_slot *slot);
  64 extern void finish_all_active_slots(void);
  65 extern void release_active_slot(struct active_request_slot *slot);
  66
  67 #ifdef USE_CURL_MULTI
  68 extern void fill_active_slots(void);
  69 extern void step_active_slots(void);
  70 #endif
  71
  72 extern void http_init(void);
  73 extern void http_cleanup(void);
  74
  75 extern int data_received;
  76 extern int active_requests;
  77
  78 #ifdef USE_CURL_MULTI
  79 extern int max_requests;
  80 extern CURLM *curlm;
  81 #endif
  82 #ifndef NO_CURL_EASY_DUPHANDLE
  83 extern CURL *curl_default;
  84 #endif
  85 extern char curl_errorstr[CURL_ERROR_SIZE];
  86
  87 extern int curl_ssl_verify;
  88 extern char *ssl_cert;
  89 #if LIBCURL_VERSION_NUM >= 0x070902
  90 extern char *ssl_key;
  91 #endif
  92 #if LIBCURL_VERSION_NUM >= 0x070908
  93 extern char *ssl_capath;
  94 #endif
  95 extern char *ssl_cainfo;
  96 extern long curl_low_speed_limit;
  97 extern long curl_low_speed_time;
  98
  99 extern struct curl_slist *pragma_header;
 100 extern struct curl_slist *no_range_header;
 101
 102 extern struct active_request_slot *active_queue_head;
 103
 104 #endif /* HTTP_H */