| #ifndef HTTP_H |
| #define HTTP_H |
| |
| #include "cache.h" |
| |
| #include <curl/curl.h> |
| #include <curl/easy.h> |
| |
| #include "strbuf.h" |
| #include "remote.h" |
| |
| /* |
| * We detect based on the cURL version if multi-transfer is |
| * usable in this implementation and define this symbol accordingly. |
| * This is not something Makefile should set nor users should pass |
| * via CFLAGS. |
| */ |
| #undef USE_CURL_MULTI |
| |
| #if LIBCURL_VERSION_NUM >= 0x071000 |
| #define USE_CURL_MULTI |
| #define DEFAULT_MAX_REQUESTS 5 |
| #endif |
| |
| #if LIBCURL_VERSION_NUM < 0x070704 |
| #define curl_global_cleanup() do { /* nothing */ } while(0) |
| #endif |
| #if LIBCURL_VERSION_NUM < 0x070800 |
| #define curl_global_init(a) do { /* nothing */ } while(0) |
| #endif |
| |
| #if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000) |
| #define NO_CURL_EASY_DUPHANDLE |
| #endif |
| |
| #if LIBCURL_VERSION_NUM < 0x070a03 |
| #define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND |
| #endif |
| |
| #if LIBCURL_VERSION_NUM < 0x070c03 |
| #define NO_CURL_IOCTL |
| #endif |
| |
| struct slot_results |
| { |
| CURLcode curl_result; |
| long http_code; |
| }; |
| |
| struct active_request_slot |
| { |
| CURL *curl; |
| FILE *local; |
| int in_use; |
| CURLcode curl_result; |
| long http_code; |
| int *finished; |
| struct slot_results *results; |
| void *callback_data; |
| void (*callback_func)(void *data); |
| struct active_request_slot *next; |
| }; |
| |
| struct buffer |
| { |
| struct strbuf buf; |
| size_t posn; |
| }; |
| |
| /* Curl request read/write callbacks */ |
| extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *strbuf); |
| extern size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf); |
| extern size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf); |
| #ifndef NO_CURL_IOCTL |
| extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp); |
| #endif |
| |
| /* Slot lifecycle functions */ |
| extern struct active_request_slot *get_active_slot(void); |
| extern int start_active_slot(struct active_request_slot *slot); |
| extern void run_active_slot(struct active_request_slot *slot); |
| extern void finish_all_active_slots(void); |
| extern void release_active_slot(struct active_request_slot *slot); |
| |
| #ifdef USE_CURL_MULTI |
| extern void fill_active_slots(void); |
| extern void add_fill_function(void *data, int (*fill)(void *)); |
| extern void step_active_slots(void); |
| #endif |
| |
| extern void http_init(struct remote *remote); |
| extern void http_cleanup(void); |
| |
| extern int data_received; |
| extern int active_requests; |
| extern int http_is_verbose; |
| |
| extern char curl_errorstr[CURL_ERROR_SIZE]; |
| |
| static inline int missing__target(int code, int result) |
| { |
| return /* file:// URL -- do we ever use one??? */ |
| (result == CURLE_FILE_COULDNT_READ_FILE) || |
| /* http:// and https:// URL */ |
| (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || |
| /* ftp:// URL */ |
| (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) |
| ; |
| } |
| |
| #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) |
| |
| /* Helpers for modifying and creating URLs */ |
| extern void append_remote_object_url(struct strbuf *buf, const char *url, |
| const char *hex, |
| int only_two_digit_prefix); |
| extern char *get_remote_object_url(const char *url, const char *hex, |
| int only_two_digit_prefix); |
| |
| /* Options for http_request_*() */ |
| #define HTTP_NO_CACHE 1 |
| |
| /* Return values for http_request_*() */ |
| #define HTTP_OK 0 |
| #define HTTP_MISSING_TARGET 1 |
| #define HTTP_ERROR 2 |
| #define HTTP_START_FAILED 3 |
| |
| /* |
| * Requests an url and stores the result in a strbuf. |
| * |
| * If the result pointer is NULL, a HTTP HEAD request is made instead of GET. |
| */ |
| int http_get_strbuf(const char *url, struct strbuf *result, int options); |
| |
| /* |
| * Downloads an url and stores the result in the given file. |
| * |
| * If a previous interrupted download is detected (i.e. a previous temporary |
| * file is still around) the download is resumed. |
| */ |
| int http_get_file(const char *url, const char *filename, int options); |
| |
| /* |
| * Prints an error message using error() containing url and curl_errorstr, |
| * and returns ret. |
| */ |
| int http_error(const char *url, int ret); |
| |
| extern int http_fetch_ref(const char *base, struct ref *ref); |
| |
| /* Helpers for fetching packs */ |
| extern int http_get_info_packs(const char *base_url, |
| struct packed_git **packs_head); |
| |
| struct http_pack_request |
| { |
| char *url; |
| struct packed_git *target; |
| struct packed_git **lst; |
| FILE *packfile; |
| char filename[PATH_MAX]; |
| char tmpfile[PATH_MAX]; |
| struct curl_slist *range_header; |
| struct active_request_slot *slot; |
| }; |
| |
| extern struct http_pack_request *new_http_pack_request( |
| struct packed_git *target, const char *base_url); |
| extern int finish_http_pack_request(struct http_pack_request *preq); |
| extern void release_http_pack_request(struct http_pack_request *preq); |
| |
| /* Helpers for fetching object */ |
| struct http_object_request |
| { |
| char *url; |
| char filename[PATH_MAX]; |
| char tmpfile[PATH_MAX]; |
| int localfile; |
| CURLcode curl_result; |
| char errorstr[CURL_ERROR_SIZE]; |
| long http_code; |
| unsigned char sha1[20]; |
| unsigned char real_sha1[20]; |
| git_SHA_CTX c; |
| z_stream stream; |
| int zret; |
| int rename; |
| struct active_request_slot *slot; |
| }; |
| |
| extern struct http_object_request *new_http_object_request( |
| const char *base_url, unsigned char *sha1); |
| extern void process_http_object_request(struct http_object_request *freq); |
| extern int finish_http_object_request(struct http_object_request *freq); |
| extern void abort_http_object_request(struct http_object_request *freq); |
| extern void release_http_object_request(struct http_object_request *freq); |
| |
| #endif /* HTTP_H */ |