gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / http.h
blob905b4629a47789705c13745fd56ce0c91adea41b
1 #ifndef HTTP_H
2 #define HTTP_H
4 #include "cache.h"
6 #include <curl/curl.h>
7 #include <curl/easy.h>
9 #include "strbuf.h"
10 #include "remote.h"
13 * We detect based on the cURL version if multi-transfer is
14 * usable in this implementation and define this symbol accordingly.
15 * This is not something Makefile should set nor users should pass
16 * via CFLAGS.
18 #undef USE_CURL_MULTI
20 #if LIBCURL_VERSION_NUM >= 0x071000
21 #define USE_CURL_MULTI
22 #define DEFAULT_MAX_REQUESTS 5
23 #endif
25 #if LIBCURL_VERSION_NUM < 0x070704
26 #define curl_global_cleanup() do { /* nothing */ } while(0)
27 #endif
28 #if LIBCURL_VERSION_NUM < 0x070800
29 #define curl_global_init(a) do { /* nothing */ } while(0)
30 #endif
32 #if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
33 #define NO_CURL_EASY_DUPHANDLE
34 #endif
36 #if LIBCURL_VERSION_NUM < 0x070a03
37 #define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
38 #endif
40 struct slot_results
42 CURLcode curl_result;
43 long http_code;
46 struct active_request_slot
48 CURL *curl;
49 FILE *local;
50 int in_use;
51 CURLcode curl_result;
52 long http_code;
53 int *finished;
54 struct slot_results *results;
55 void *callback_data;
56 void (*callback_func)(void *data);
57 struct active_request_slot *next;
60 struct buffer
62 struct strbuf buf;
63 size_t posn;
66 /* Curl request read/write callbacks */
67 extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
68 extern size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
69 extern size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
71 /* Slot lifecycle functions */
72 extern struct active_request_slot *get_active_slot(void);
73 extern int start_active_slot(struct active_request_slot *slot);
74 extern void run_active_slot(struct active_request_slot *slot);
75 extern void finish_all_active_slots(void);
76 extern void release_active_slot(struct active_request_slot *slot);
78 #ifdef USE_CURL_MULTI
79 extern void fill_active_slots(void);
80 extern void add_fill_function(void *data, int (*fill)(void *));
81 extern void step_active_slots(void);
82 #endif
84 extern void http_init(struct remote *remote);
85 extern void http_cleanup(void);
87 extern int data_received;
88 extern int active_requests;
90 extern char curl_errorstr[CURL_ERROR_SIZE];
92 static inline int missing__target(int code, int result)
94 return /* file:// URL -- do we ever use one??? */
95 (result == CURLE_FILE_COULDNT_READ_FILE) ||
96 /* http:// and https:// URL */
97 (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
98 /* ftp:// URL */
99 (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
103 #define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
105 extern int http_fetch_ref(const char *base, struct ref *ref);
107 #endif /* HTTP_H */