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i18n: avoid parenthesized string as array initializer
[thirdparty/git.git] / http.h
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CommitLineData
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#include "strbuf.h"
10#include "remote.h"
11#include "url.h"
12
13/*
14 * We detect based on the cURL version if multi-transfer is
15 * usable in this implementation and define this symbol accordingly.
16 * This is not something Makefile should set nor users should pass
17 * via CFLAGS.
18 */
19#undef USE_CURL_MULTI
20
21#if LIBCURL_VERSION_NUM >= 0x071000
22#define USE_CURL_MULTI
23#define DEFAULT_MAX_REQUESTS 5
24#endif
25
26#if LIBCURL_VERSION_NUM < 0x070704
27#define curl_global_cleanup() do { /* nothing */ } while (0)
28#endif
29#if LIBCURL_VERSION_NUM < 0x070800
30#define curl_global_init(a) do { /* nothing */ } while (0)
31#endif
32
33#if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
34#define NO_CURL_EASY_DUPHANDLE
35#endif
36
37#if LIBCURL_VERSION_NUM < 0x070a03
38#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
39#endif
40
41#if LIBCURL_VERSION_NUM < 0x070c03
42#define NO_CURL_IOCTL
43#endif
44
45struct slot_results {
46 CURLcode curl_result;
47 long http_code;
48};
49
50struct active_request_slot {
51 CURL *curl;
52 FILE *local;
53 int in_use;
54 CURLcode curl_result;
55 long http_code;
56 int *finished;
57 struct slot_results *results;
58 void *callback_data;
59 void (*callback_func)(void *data);
60 struct active_request_slot *next;
61};
62
63struct buffer {
64 struct strbuf buf;
65 size_t posn;
66};
67
68/* Curl request read/write callbacks */
69extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
70extern size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
71extern size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
72#ifndef NO_CURL_IOCTL
73extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp);
74#endif
75
76/* Slot lifecycle functions */
77extern struct active_request_slot *get_active_slot(void);
78extern int start_active_slot(struct active_request_slot *slot);
79extern void run_active_slot(struct active_request_slot *slot);
80extern void finish_active_slot(struct active_request_slot *slot);
81extern void finish_all_active_slots(void);
82
83#ifdef USE_CURL_MULTI
84extern void fill_active_slots(void);
85extern void add_fill_function(void *data, int (*fill)(void *));
86extern void step_active_slots(void);
87#endif
88
89extern void http_init(struct remote *remote);
90extern void http_cleanup(void);
91
92extern int data_received;
93extern int active_requests;
94extern int http_is_verbose;
95extern size_t http_post_buffer;
96
97extern char curl_errorstr[CURL_ERROR_SIZE];
98
99static inline int missing__target(int code, int result)
100{
101 return /* file:// URL -- do we ever use one??? */
102 (result == CURLE_FILE_COULDNT_READ_FILE) ||
103 /* http:// and https:// URL */
104 (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
105 /* ftp:// URL */
106 (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
107 ;
108}
109
110#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
111
112/* Helpers for modifying and creating URLs */
113extern void append_remote_object_url(struct strbuf *buf, const char *url,
114 const char *hex,
115 int only_two_digit_prefix);
116extern char *get_remote_object_url(const char *url, const char *hex,
117 int only_two_digit_prefix);
118
119/* Options for http_request_*() */
120#define HTTP_NO_CACHE 1
121
122/* Return values for http_request_*() */
123#define HTTP_OK 0
124#define HTTP_MISSING_TARGET 1
125#define HTTP_ERROR 2
126#define HTTP_START_FAILED 3
127#define HTTP_REAUTH 4
128#define HTTP_NOAUTH 5
129
130/*
131 * Requests an url and stores the result in a strbuf.
132 *
133 * If the result pointer is NULL, a HTTP HEAD request is made instead of GET.
134 */
135int http_get_strbuf(const char *url, struct strbuf *result, int options);
136
137/*
138 * Prints an error message using error() containing url and curl_errorstr,
139 * and returns ret.
140 */
141int http_error(const char *url, int ret);
142
143extern int http_fetch_ref(const char *base, struct ref *ref);
144
145/* Helpers for fetching packs */
146extern int http_get_info_packs(const char *base_url,
147 struct packed_git **packs_head);
148
149struct http_pack_request {
150 char *url;
151 struct packed_git *target;
152 struct packed_git **lst;
153 FILE *packfile;
154 char tmpfile[PATH_MAX];
155 struct curl_slist *range_header;
156 struct active_request_slot *slot;
157};
158
159extern struct http_pack_request *new_http_pack_request(
160 struct packed_git *target, const char *base_url);
161extern int finish_http_pack_request(struct http_pack_request *preq);
162extern void release_http_pack_request(struct http_pack_request *preq);
163
164/* Helpers for fetching object */
165struct http_object_request {
166 char *url;
167 char tmpfile[PATH_MAX];
168 int localfile;
169 CURLcode curl_result;
170 char errorstr[CURL_ERROR_SIZE];
171 long http_code;
172 unsigned char sha1[20];
173 unsigned char real_sha1[20];
174 git_SHA_CTX c;
175 z_stream stream;
176 int zret;
177 int rename;
178 struct active_request_slot *slot;
179};
180
181extern struct http_object_request *new_http_object_request(
182 const char *base_url, unsigned char *sha1);
183extern void process_http_object_request(struct http_object_request *freq);
184extern int finish_http_object_request(struct http_object_request *freq);
185extern void abort_http_object_request(struct http_object_request *freq);
186extern void release_http_object_request(struct http_object_request *freq);
187
188#endif /* HTTP_H */
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