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Commit | Line | Data |
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29508e1e NH |
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" |
028c2976 | 11 | |
4f5f998f JH |
12 | /* |
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. | |
17 | */ | |
18 | #undef USE_CURL_MULTI | |
19 | ||
9cf04301 | 20 | #if LIBCURL_VERSION_NUM >= 0x071000 |
29508e1e NH |
21 | #define USE_CURL_MULTI |
22 | #define DEFAULT_MAX_REQUESTS 5 | |
23 | #endif | |
24 | ||
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 | |
31 | ||
500ebb01 | 32 | #if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000) |
29508e1e NH |
33 | #define NO_CURL_EASY_DUPHANDLE |
34 | #endif | |
35 | ||
c774b2dc AH |
36 | #if LIBCURL_VERSION_NUM < 0x070a03 |
37 | #define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND | |
38 | #endif | |
39 | ||
3944ba0c MS |
40 | #if LIBCURL_VERSION_NUM < 0x070c03 |
41 | #define NO_CURL_IOCTL | |
42 | #endif | |
43 | ||
c8568e13 NH |
44 | struct slot_results |
45 | { | |
46 | CURLcode curl_result; | |
47 | long http_code; | |
48 | }; | |
49 | ||
29508e1e NH |
50 | struct active_request_slot |
51 | { | |
52 | CURL *curl; | |
53 | FILE *local; | |
54 | int in_use; | |
55 | CURLcode curl_result; | |
56 | long http_code; | |
baa7b67d | 57 | int *finished; |
c8568e13 | 58 | struct slot_results *results; |
29508e1e NH |
59 | void *callback_data; |
60 | void (*callback_func)(void *data); | |
61 | struct active_request_slot *next; | |
62 | }; | |
63 | ||
64 | struct buffer | |
65 | { | |
028c2976 MH |
66 | struct strbuf buf; |
67 | size_t posn; | |
29508e1e NH |
68 | }; |
69 | ||
70 | /* Curl request read/write callbacks */ | |
f444e528 JH |
71 | extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *strbuf); |
72 | extern size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf); | |
73 | extern size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf); | |
3944ba0c MS |
74 | #ifndef NO_CURL_IOCTL |
75 | extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp); | |
76 | #endif | |
29508e1e NH |
77 | |
78 | /* Slot lifecycle functions */ | |
79 | extern struct active_request_slot *get_active_slot(void); | |
80 | extern int start_active_slot(struct active_request_slot *slot); | |
81 | extern void run_active_slot(struct active_request_slot *slot); | |
82 | extern void finish_all_active_slots(void); | |
53f31389 | 83 | extern void release_active_slot(struct active_request_slot *slot); |
29508e1e NH |
84 | |
85 | #ifdef USE_CURL_MULTI | |
86 | extern void fill_active_slots(void); | |
fc57b6aa | 87 | extern void add_fill_function(void *data, int (*fill)(void *)); |
29508e1e NH |
88 | extern void step_active_slots(void); |
89 | #endif | |
90 | ||
e9176745 TRC |
91 | extern struct curl_slist *no_pragma_header; |
92 | ||
93 | #define RANGE_HEADER_SIZE 30 | |
94 | ||
9fc6440d | 95 | extern void http_init(struct remote *remote); |
29508e1e NH |
96 | extern void http_cleanup(void); |
97 | ||
98 | extern int data_received; | |
99 | extern int active_requests; | |
e9176745 | 100 | extern int http_is_verbose; |
29508e1e | 101 | |
29508e1e NH |
102 | extern char curl_errorstr[CURL_ERROR_SIZE]; |
103 | ||
e8dc37e0 MH |
104 | static inline int missing__target(int code, int result) |
105 | { | |
106 | return /* file:// URL -- do we ever use one??? */ | |
107 | (result == CURLE_FILE_COULDNT_READ_FILE) || | |
108 | /* http:// and https:// URL */ | |
109 | (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || | |
110 | /* ftp:// URL */ | |
111 | (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) | |
112 | ; | |
113 | } | |
114 | ||
115 | #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) | |
116 | ||
e929cd20 MH |
117 | /* Options for http_request_*() */ |
118 | #define HTTP_NO_CACHE 1 | |
119 | ||
120 | /* Return values for http_request_*() */ | |
121 | #define HTTP_OK 0 | |
122 | #define HTTP_MISSING_TARGET 1 | |
123 | #define HTTP_ERROR 2 | |
124 | #define HTTP_START_FAILED 3 | |
125 | ||
126 | /* | |
127 | * Requests an url and stores the result in a strbuf. | |
128 | * | |
129 | * If the result pointer is NULL, a HTTP HEAD request is made instead of GET. | |
130 | */ | |
131 | int http_get_strbuf(const char *url, struct strbuf *result, int options); | |
132 | ||
133 | /* | |
134 | * Downloads an url and stores the result in the given file. | |
135 | * | |
136 | * If a previous interrupted download is detected (i.e. a previous temporary | |
137 | * file is still around) the download is resumed. | |
138 | */ | |
139 | int http_get_file(const char *url, const char *filename, int options); | |
140 | ||
141 | /* | |
142 | * Prints an error message using error() containing url and curl_errorstr, | |
143 | * and returns ret. | |
144 | */ | |
145 | int http_error(const char *url, int ret); | |
146 | ||
c13b2633 | 147 | extern int http_fetch_ref(const char *base, struct ref *ref); |
d7e92806 | 148 | |
29508e1e | 149 | #endif /* HTTP_H */ |