diff options
Diffstat (limited to 'http.h')
| -rw-r--r-- | http.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/http.h b/http.h new file mode 100644 index 0000000000..e64084fe6d --- /dev/null +++ b/http.h @@ -0,0 +1,221 @@ +#ifndef HTTP_H +#define HTTP_H + +#include "cache.h" + +#include <curl/curl.h> +#include <curl/easy.h> + +#include "strbuf.h" +#include "remote.h" +#include "url.h" + +/* + * We detect based on the cURL version if multi-transfer is + * usable in this implementation and define this symbol accordingly. + * This shouldn't be set by the Makefile or by the user (e.g. 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 + +/* + * CURLOPT_USE_SSL was known as CURLOPT_FTP_SSL up to 7.16.4, + * and the constants were known as CURLFTPSSL_* +*/ +#if !defined(CURLOPT_USE_SSL) && defined(CURLOPT_FTP_SSL) +#define CURLOPT_USE_SSL CURLOPT_FTP_SSL +#define CURLUSESSL_TRY CURLFTPSSL_TRY +#endif + +struct slot_results { + CURLcode curl_result; + long http_code; + long auth_avail; +}; + +struct active_request_slot { + CURL *curl; + 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(char *ptr, size_t eltsize, size_t nmemb, void *strbuf); +extern size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf); +extern size_t fwrite_null(char *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_active_slot(struct active_request_slot *slot); +extern void finish_all_active_slots(void); +extern int handle_curl_result(struct slot_results *results); + +/* + * This will run one slot to completion in a blocking manner, similar to how + * curl_easy_perform would work (but we don't want to use that, because + * we do not want to intermingle calls to curl_multi and curl_easy). + * + */ +int run_one_slot(struct active_request_slot *slot, + struct slot_results *results); + +#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, const char *url, + int proactive_auth); +extern void http_cleanup(void); + +extern int active_requests; +extern int http_is_verbose; +extern size_t http_post_buffer; +extern struct credential http_auth; + +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_get_*() */ +struct http_get_options { + unsigned no_cache:1, + keep_error:1; + + /* If non-NULL, returns the content-type of the response. */ + struct strbuf *content_type; + + /* + * If non-NULL, returns the URL we ended up at, including any + * redirects we followed. + */ + struct strbuf *effective_url; + + /* + * If both base_url and effective_url are non-NULL, the base URL will + * be munged to reflect any redirections going from the requested url + * to effective_url. See the definition of update_url_from_redirect + * for details. + */ + struct strbuf *base_url; +}; + +/* Return values for http_get_*() */ +#define HTTP_OK 0 +#define HTTP_MISSING_TARGET 1 +#define HTTP_ERROR 2 +#define HTTP_START_FAILED 3 +#define HTTP_REAUTH 4 +#define HTTP_NOAUTH 5 + +/* + * Requests a 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, struct http_get_options *options); + +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 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 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; + git_zstream 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 */ |