Andrew's git - gitweb.git/blob

b9d6f4823d4a5318c6b7ac2f3d80bdce46e30d68
   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
  29struct slot_results
  30{
  31        CURLcode curl_result;
  32        long http_code;
  33};
  34
  35struct 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
  49struct buffer
  50{
  51        size_t posn;
  52        size_t size;
  53        void *buffer;
  54};
  55
  56/* Curl request read/write callbacks */
  57extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb,
  58                           struct buffer *buffer);
  59extern size_t fwrite_buffer(const void *ptr, size_t eltsize,
  60                            size_t nmemb, struct buffer *buffer);
  61extern size_t fwrite_null(const void *ptr, size_t eltsize,
  62                          size_t nmemb, struct buffer *buffer);
  63
  64/* Slot lifecycle functions */
  65extern struct active_request_slot *get_active_slot(void);
  66extern int start_active_slot(struct active_request_slot *slot);
  67extern void run_active_slot(struct active_request_slot *slot);
  68extern void finish_all_active_slots(void);
  69extern void release_active_slot(struct active_request_slot *slot);
  70
  71#ifdef USE_CURL_MULTI
  72extern void fill_active_slots(void);
  73extern void add_fill_function(void *data, int (*fill)(void *));
  74extern void step_active_slots(void);
  75#endif
  76
  77extern void http_init(void);
  78extern void http_cleanup(void);
  79
  80extern int data_received;
  81extern int active_requests;
  82
  83extern char curl_errorstr[CURL_ERROR_SIZE];
  84
  85static inline int missing__target(int code, int result)
  86{
  87        return  /* file:// URL -- do we ever use one??? */
  88                (result == CURLE_FILE_COULDNT_READ_FILE) ||
  89                /* http:// and https:// URL */
  90                (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
  91                /* ftp:// URL */
  92                (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
  93                ;
  94}
  95
  96#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
  97
  98#endif /* HTTP_H */