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![Jeff King](/assets/img/avatar_default.png)
This helper function should really be a one-liner that prints an error message, but it has ended up unnecessarily complicated: 1. We call error() directly when we fail to start the curl request, so we must later avoid printing a duplicate error in http_error(). It would be much simpler in this case to just stuff the error message into our usual curl_errorstr buffer rather than printing it ourselves. This means that http_error does not even have to care about curl's exit value (the interesting part is in the errorstr buffer already). 2. We return the "ret" value passed in to us, but none of the callers actually cares about our return value. We can just drop this entirely. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
189 lines
5.1 KiB
C
189 lines
5.1 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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#include "url.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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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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CURL *curl;
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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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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(char *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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extern size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf);
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extern size_t fwrite_null(char *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_active_slot(struct active_request_slot *slot);
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extern void finish_all_active_slots(void);
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extern int handle_curl_result(struct slot_results *results);
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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 void http_init(struct remote *remote, const char *url,
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int proactive_auth);
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extern void http_cleanup(void);
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extern int active_requests;
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extern int http_is_verbose;
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extern size_t http_post_buffer;
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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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/* Helpers for modifying and creating URLs */
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extern void append_remote_object_url(struct strbuf *buf, const char *url,
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const char *hex,
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int only_two_digit_prefix);
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extern char *get_remote_object_url(const char *url, const char *hex,
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int only_two_digit_prefix);
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/* Options for http_request_*() */
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#define HTTP_NO_CACHE 1
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#define HTTP_KEEP_ERROR 2
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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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#define HTTP_REAUTH 4
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#define HTTP_NOAUTH 5
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/*
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* Requests a 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 *content_type, struct strbuf *result, 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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*/
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void http_error(const char *url);
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extern int http_fetch_ref(const char *base, struct ref *ref);
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/* Helpers for fetching packs */
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extern int http_get_info_packs(const char *base_url,
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struct packed_git **packs_head);
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struct http_pack_request {
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char *url;
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struct packed_git *target;
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struct packed_git **lst;
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FILE *packfile;
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char tmpfile[PATH_MAX];
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struct curl_slist *range_header;
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struct active_request_slot *slot;
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};
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extern struct http_pack_request *new_http_pack_request(
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struct packed_git *target, const char *base_url);
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extern int finish_http_pack_request(struct http_pack_request *preq);
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extern void release_http_pack_request(struct http_pack_request *preq);
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/* Helpers for fetching object */
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struct http_object_request {
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char *url;
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char tmpfile[PATH_MAX];
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int localfile;
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CURLcode curl_result;
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char errorstr[CURL_ERROR_SIZE];
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long http_code;
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unsigned char sha1[20];
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unsigned char real_sha1[20];
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git_SHA_CTX c;
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git_zstream stream;
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int zret;
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int rename;
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struct active_request_slot *slot;
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};
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extern struct http_object_request *new_http_object_request(
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const char *base_url, unsigned char *sha1);
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extern void process_http_object_request(struct http_object_request *freq);
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extern int finish_http_object_request(struct http_object_request *freq);
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extern void abort_http_object_request(struct http_object_request *freq);
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extern void release_http_object_request(struct http_object_request *freq);
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#endif /* HTTP_H */
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