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e929cd20bb
The new functions added are: - http_request() (internal function) - http_get_strbuf() - http_get_file() - http_error() http_get_strbuf and http_get_file allow respectively to retrieve contents of an URL to a strbuf or an opened file handle. http_error prints out an error message containing the URL and the curl error (in curl_errorstr). Signed-off-by: Mike Hommey <mh@glandium.org> Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
#ifndef HTTP_H
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#define HTTP_H
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#include "cache.h"
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#include <curl/curl.h>
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#include <curl/easy.h>
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#include "strbuf.h"
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#include "remote.h"
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/*
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* We detect based on the cURL version if multi-transfer is
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* usable in this implementation and define this symbol accordingly.
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* This is not something Makefile should set nor users should pass
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* via CFLAGS.
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*/
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#undef USE_CURL_MULTI
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#if LIBCURL_VERSION_NUM >= 0x071000
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#define USE_CURL_MULTI
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#define DEFAULT_MAX_REQUESTS 5
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#endif
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#if LIBCURL_VERSION_NUM < 0x070704
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#define curl_global_cleanup() do { /* nothing */ } while(0)
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#endif
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#if LIBCURL_VERSION_NUM < 0x070800
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#define curl_global_init(a) do { /* nothing */ } while(0)
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#endif
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#if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000)
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#define NO_CURL_EASY_DUPHANDLE
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#endif
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#if LIBCURL_VERSION_NUM < 0x070a03
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#define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND
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#endif
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#if LIBCURL_VERSION_NUM < 0x070c03
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#define NO_CURL_IOCTL
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#endif
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struct slot_results
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{
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CURLcode curl_result;
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long http_code;
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};
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struct active_request_slot
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{
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CURL *curl;
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FILE *local;
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int in_use;
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CURLcode curl_result;
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long http_code;
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int *finished;
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struct slot_results *results;
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void *callback_data;
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void (*callback_func)(void *data);
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struct active_request_slot *next;
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};
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struct buffer
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{
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struct strbuf buf;
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size_t posn;
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};
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/* Curl request read/write callbacks */
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extern size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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extern size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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extern size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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#ifndef NO_CURL_IOCTL
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extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp);
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#endif
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/* Slot lifecycle functions */
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extern struct active_request_slot *get_active_slot(void);
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extern int start_active_slot(struct active_request_slot *slot);
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extern void run_active_slot(struct active_request_slot *slot);
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extern void finish_all_active_slots(void);
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extern void release_active_slot(struct active_request_slot *slot);
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#ifdef USE_CURL_MULTI
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extern void fill_active_slots(void);
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extern void add_fill_function(void *data, int (*fill)(void *));
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extern void step_active_slots(void);
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#endif
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extern struct curl_slist *no_pragma_header;
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#define RANGE_HEADER_SIZE 30
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extern void http_init(struct remote *remote);
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extern void http_cleanup(void);
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extern int data_received;
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extern int active_requests;
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extern int http_is_verbose;
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extern char curl_errorstr[CURL_ERROR_SIZE];
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static inline int missing__target(int code, int result)
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{
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return /* file:// URL -- do we ever use one??? */
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(result == CURLE_FILE_COULDNT_READ_FILE) ||
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/* http:// and https:// URL */
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(code == 404 && result == CURLE_HTTP_RETURNED_ERROR) ||
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/* ftp:// URL */
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(code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE)
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;
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}
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#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
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/* Options for http_request_*() */
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#define HTTP_NO_CACHE 1
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/* Return values for http_request_*() */
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#define HTTP_OK 0
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#define HTTP_MISSING_TARGET 1
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#define HTTP_ERROR 2
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#define HTTP_START_FAILED 3
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/*
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* Requests an url and stores the result in a strbuf.
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*
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* If the result pointer is NULL, a HTTP HEAD request is made instead of GET.
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*/
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int http_get_strbuf(const char *url, struct strbuf *result, int options);
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/*
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* Downloads an url and stores the result in the given file.
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*
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* If a previous interrupted download is detected (i.e. a previous temporary
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* file is still around) the download is resumed.
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*/
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int http_get_file(const char *url, const char *filename, int options);
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/*
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* Prints an error message using error() containing url and curl_errorstr,
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* and returns ret.
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*/
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int http_error(const char *url, int ret);
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extern int http_fetch_ref(const char *base, struct ref *ref);
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#endif /* HTTP_H */
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