Git 2.8
[git/git.git] / http.h
CommitLineData
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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
028c2976 9#include "strbuf.h"
9fc6440d 10#include "remote.h"
1966d9f3 11#include "url.h"
028c2976 12
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13/*
14 * We detect based on the cURL version if multi-transfer is
15 * usable in this implementation and define this symbol accordingly.
01689909 16 * This shouldn't be set by the Makefile or by the user (e.g. via CFLAGS).
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17 */
18#undef USE_CURL_MULTI
19
9cf04301 20#if LIBCURL_VERSION_NUM >= 0x071000
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21#define USE_CURL_MULTI
22#define DEFAULT_MAX_REQUESTS 5
23#endif
24
25#if LIBCURL_VERSION_NUM < 0x070704
98746061 26#define curl_global_cleanup() do { /* nothing */ } while (0)
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27#endif
28#if LIBCURL_VERSION_NUM < 0x070800
98746061 29#define curl_global_init(a) do { /* nothing */ } while (0)
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30#endif
31
500ebb01 32#if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
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33#define NO_CURL_EASY_DUPHANDLE
34#endif
35
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36#if LIBCURL_VERSION_NUM < 0x070a03
37#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
38#endif
39
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40#if LIBCURL_VERSION_NUM < 0x070c03
41#define NO_CURL_IOCTL
42#endif
43
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44/*
45 * CURLOPT_USE_SSL was known as CURLOPT_FTP_SSL up to 7.16.4,
46 * and the constants were known as CURLFTPSSL_*
47*/
48#if !defined(CURLOPT_USE_SSL) && defined(CURLOPT_FTP_SSL)
49#define CURLOPT_USE_SSL CURLOPT_FTP_SSL
50#define CURLUSESSL_TRY CURLFTPSSL_TRY
51#endif
52
9cba13ca 53struct slot_results {
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54 CURLcode curl_result;
55 long http_code;
0972ccd9 56 long auth_avail;
372370f1 57 long http_connectcode;
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58};
59
9cba13ca 60struct active_request_slot {
29508e1e 61 CURL *curl;
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62 int in_use;
63 CURLcode curl_result;
64 long http_code;
baa7b67d 65 int *finished;
c8568e13 66 struct slot_results *results;
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67 void *callback_data;
68 void (*callback_func)(void *data);
69 struct active_request_slot *next;
70};
71
9cba13ca 72struct buffer {
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73 struct strbuf buf;
74 size_t posn;
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75};
76
77/* Curl request read/write callbacks */
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78extern size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf);
79extern size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf);
80extern size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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81#ifndef NO_CURL_IOCTL
82extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp);
83#endif
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84
85/* Slot lifecycle functions */
86extern struct active_request_slot *get_active_slot(void);
87extern int start_active_slot(struct active_request_slot *slot);
88extern void run_active_slot(struct active_request_slot *slot);
89extern void finish_all_active_slots(void);
90
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91/*
92 * This will run one slot to completion in a blocking manner, similar to how
93 * curl_easy_perform would work (but we don't want to use that, because
94 * we do not want to intermingle calls to curl_multi and curl_easy).
95 *
96 */
97int run_one_slot(struct active_request_slot *slot,
98 struct slot_results *results);
99
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100#ifdef USE_CURL_MULTI
101extern void fill_active_slots(void);
fc57b6aa 102extern void add_fill_function(void *data, int (*fill)(void *));
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103extern void step_active_slots(void);
104#endif
105
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106extern void http_init(struct remote *remote, const char *url,
107 int proactive_auth);
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108extern void http_cleanup(void);
109
c915f11e 110extern long int git_curl_ipresolve;
29508e1e 111extern int active_requests;
e9176745 112extern int http_is_verbose;
de1a2fdd 113extern size_t http_post_buffer;
2501aff8 114extern struct credential http_auth;
29508e1e 115
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116extern char curl_errorstr[CURL_ERROR_SIZE];
117
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118static inline int missing__target(int code, int result)
119{
120 return /* file:// URL -- do we ever use one??? */
121 (result == CURLE_FILE_COULDNT_READ_FILE) ||
122 /* http:// and https:// URL */
123 (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
124 /* ftp:// URL */
125 (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
126 ;
127}
128
129#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
130
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131/* Helpers for modifying and creating URLs */
132extern void append_remote_object_url(struct strbuf *buf, const char *url,
133 const char *hex,
134 int only_two_digit_prefix);
135extern char *get_remote_object_url(const char *url, const char *hex,
136 int only_two_digit_prefix);
137
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138/* Options for http_get_*() */
139struct http_get_options {
140 unsigned no_cache:1,
141 keep_error:1;
e929cd20 142
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143 /* If non-NULL, returns the content-type of the response. */
144 struct strbuf *content_type;
78868962 145
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146 /*
147 * If non-NULL, and content_type above is non-NULL, returns
148 * the charset parameter from the content-type. If none is
149 * present, returns an empty string.
150 */
151 struct strbuf *charset;
152
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153 /*
154 * If non-NULL, returns the URL we ended up at, including any
155 * redirects we followed.
156 */
157 struct strbuf *effective_url;
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158
159 /*
160 * If both base_url and effective_url are non-NULL, the base URL will
161 * be munged to reflect any redirections going from the requested url
162 * to effective_url. See the definition of update_url_from_redirect
163 * for details.
164 */
165 struct strbuf *base_url;
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166};
167
168/* Return values for http_get_*() */
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169#define HTTP_OK 0
170#define HTTP_MISSING_TARGET 1
171#define HTTP_ERROR 2
172#define HTTP_START_FAILED 3
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173#define HTTP_REAUTH 4
174#define HTTP_NOAUTH 5
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175
176/*
a7793a74 177 * Requests a URL and stores the result in a strbuf.
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178 *
179 * If the result pointer is NULL, a HTTP HEAD request is made instead of GET.
180 */
1bbcc224 181int http_get_strbuf(const char *url, struct strbuf *result, struct http_get_options *options);
e929cd20 182
c13b2633 183extern int http_fetch_ref(const char *base, struct ref *ref);
d7e92806 184
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185/* Helpers for fetching packs */
186extern int http_get_info_packs(const char *base_url,
187 struct packed_git **packs_head);
188
9cba13ca 189struct http_pack_request {
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190 char *url;
191 struct packed_git *target;
192 struct packed_git **lst;
193 FILE *packfile;
2264dfa5 194 char tmpfile[PATH_MAX];
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195 struct active_request_slot *slot;
196};
197
198extern struct http_pack_request *new_http_pack_request(
199 struct packed_git *target, const char *base_url);
200extern int finish_http_pack_request(struct http_pack_request *preq);
201extern void release_http_pack_request(struct http_pack_request *preq);
202
5424bc55 203/* Helpers for fetching object */
9cba13ca 204struct http_object_request {
5424bc55 205 char *url;
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206 char tmpfile[PATH_MAX];
207 int localfile;
208 CURLcode curl_result;
209 char errorstr[CURL_ERROR_SIZE];
210 long http_code;
211 unsigned char sha1[20];
212 unsigned char real_sha1[20];
213 git_SHA_CTX c;
ef49a7a0 214 git_zstream stream;
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215 int zret;
216 int rename;
217 struct active_request_slot *slot;
218};
219
220extern struct http_object_request *new_http_object_request(
221 const char *base_url, unsigned char *sha1);
222extern void process_http_object_request(struct http_object_request *freq);
223extern int finish_http_object_request(struct http_object_request *freq);
224extern void abort_http_object_request(struct http_object_request *freq);
225extern void release_http_object_request(struct http_object_request *freq);
226
29508e1e 227#endif /* HTTP_H */