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![Junio C Hamano](/assets/img/avatar_default.png)
http.emptyauth configuration is a way to allow an empty username to pass when attempting to authenticate using mechanisms like Kerberos. We took an unspecified (NULL) username and sent ":" (i.e. no username, no password) to CURLOPT_USERPWD, but did not do the same when the username is explicitly set to an empty string. * dt/http-empty-auth: http: http.emptyauth should allow empty (not just NULL) usernames
2248 lines
57 KiB
C
2248 lines
57 KiB
C
#include "git-compat-util.h"
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#include "http.h"
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#include "pack.h"
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#include "sideband.h"
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#include "run-command.h"
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#include "url.h"
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#include "urlmatch.h"
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#include "credential.h"
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#include "version.h"
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#include "pkt-line.h"
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#include "gettext.h"
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#include "transport.h"
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static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
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#if LIBCURL_VERSION_NUM >= 0x070a08
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long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
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#else
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long int git_curl_ipresolve;
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#endif
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int active_requests;
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int http_is_verbose;
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size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
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#if LIBCURL_VERSION_NUM >= 0x070a06
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#define LIBCURL_CAN_HANDLE_AUTH_ANY
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#endif
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static int min_curl_sessions = 1;
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static int curl_session_count;
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#ifdef USE_CURL_MULTI
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static int max_requests = -1;
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static CURLM *curlm;
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#endif
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#ifndef NO_CURL_EASY_DUPHANDLE
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static CURL *curl_default;
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#endif
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#define PREV_BUF_SIZE 4096
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char curl_errorstr[CURL_ERROR_SIZE];
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static int curl_ssl_verify = -1;
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static int curl_ssl_try;
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static const char *ssl_cert;
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static const char *ssl_cipherlist;
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static const char *ssl_version;
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static struct {
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const char *name;
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long ssl_version;
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} sslversions[] = {
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{ "sslv2", CURL_SSLVERSION_SSLv2 },
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{ "sslv3", CURL_SSLVERSION_SSLv3 },
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{ "tlsv1", CURL_SSLVERSION_TLSv1 },
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#if LIBCURL_VERSION_NUM >= 0x072200
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{ "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
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{ "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
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{ "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
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#endif
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};
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#if LIBCURL_VERSION_NUM >= 0x070903
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static const char *ssl_key;
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#endif
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#if LIBCURL_VERSION_NUM >= 0x070908
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static const char *ssl_capath;
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#endif
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#if LIBCURL_VERSION_NUM >= 0x072c00
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static const char *ssl_pinnedkey;
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#endif
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static const char *ssl_cainfo;
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static long curl_low_speed_limit = -1;
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static long curl_low_speed_time = -1;
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static int curl_ftp_no_epsv;
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static const char *curl_http_proxy;
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static const char *curl_no_proxy;
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static const char *http_proxy_authmethod;
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static struct {
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const char *name;
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long curlauth_param;
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} proxy_authmethods[] = {
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{ "basic", CURLAUTH_BASIC },
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{ "digest", CURLAUTH_DIGEST },
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{ "negotiate", CURLAUTH_GSSNEGOTIATE },
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{ "ntlm", CURLAUTH_NTLM },
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#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
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{ "anyauth", CURLAUTH_ANY },
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#endif
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/*
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* CURLAUTH_DIGEST_IE has no corresponding command-line option in
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* curl(1) and is not included in CURLAUTH_ANY, so we leave it out
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* here, too
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*/
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};
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#if LIBCURL_VERSION_NUM >= 0x071600
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static const char *curl_deleg;
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static struct {
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const char *name;
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long curl_deleg_param;
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} curl_deleg_levels[] = {
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{ "none", CURLGSSAPI_DELEGATION_NONE },
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{ "policy", CURLGSSAPI_DELEGATION_POLICY_FLAG },
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{ "always", CURLGSSAPI_DELEGATION_FLAG },
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};
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#endif
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static struct credential proxy_auth = CREDENTIAL_INIT;
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static const char *curl_proxyuserpwd;
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static const char *curl_cookie_file;
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static int curl_save_cookies;
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struct credential http_auth = CREDENTIAL_INIT;
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static int http_proactive_auth;
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static const char *user_agent;
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static int curl_empty_auth;
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#if LIBCURL_VERSION_NUM >= 0x071700
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/* Use CURLOPT_KEYPASSWD as is */
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#elif LIBCURL_VERSION_NUM >= 0x070903
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#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
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#else
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#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
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#endif
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static struct credential cert_auth = CREDENTIAL_INIT;
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static int ssl_cert_password_required;
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#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
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static unsigned long http_auth_methods = CURLAUTH_ANY;
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#endif
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static struct curl_slist *pragma_header;
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static struct curl_slist *no_pragma_header;
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static struct curl_slist *extra_http_headers;
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static struct active_request_slot *active_queue_head;
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static char *cached_accept_language;
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size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
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{
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size_t size = eltsize * nmemb;
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struct buffer *buffer = buffer_;
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if (size > buffer->buf.len - buffer->posn)
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size = buffer->buf.len - buffer->posn;
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memcpy(ptr, buffer->buf.buf + buffer->posn, size);
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buffer->posn += size;
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return size;
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}
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#ifndef NO_CURL_IOCTL
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curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
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{
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struct buffer *buffer = clientp;
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switch (cmd) {
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case CURLIOCMD_NOP:
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return CURLIOE_OK;
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case CURLIOCMD_RESTARTREAD:
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buffer->posn = 0;
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return CURLIOE_OK;
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default:
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return CURLIOE_UNKNOWNCMD;
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}
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}
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#endif
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size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
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{
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size_t size = eltsize * nmemb;
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struct strbuf *buffer = buffer_;
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strbuf_add(buffer, ptr, size);
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return size;
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}
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size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf)
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{
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return eltsize * nmemb;
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}
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static void closedown_active_slot(struct active_request_slot *slot)
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{
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active_requests--;
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slot->in_use = 0;
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}
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static void finish_active_slot(struct active_request_slot *slot)
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{
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closedown_active_slot(slot);
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curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
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if (slot->finished != NULL)
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(*slot->finished) = 1;
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/* Store slot results so they can be read after the slot is reused */
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if (slot->results != NULL) {
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slot->results->curl_result = slot->curl_result;
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slot->results->http_code = slot->http_code;
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#if LIBCURL_VERSION_NUM >= 0x070a08
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curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
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&slot->results->auth_avail);
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#else
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slot->results->auth_avail = 0;
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#endif
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curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
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&slot->results->http_connectcode);
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}
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/* Run callback if appropriate */
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if (slot->callback_func != NULL)
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slot->callback_func(slot->callback_data);
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}
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static void xmulti_remove_handle(struct active_request_slot *slot)
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{
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#ifdef USE_CURL_MULTI
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curl_multi_remove_handle(curlm, slot->curl);
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#endif
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}
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#ifdef USE_CURL_MULTI
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static void process_curl_messages(void)
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{
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int num_messages;
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struct active_request_slot *slot;
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CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
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while (curl_message != NULL) {
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if (curl_message->msg == CURLMSG_DONE) {
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int curl_result = curl_message->data.result;
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slot = active_queue_head;
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while (slot != NULL &&
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slot->curl != curl_message->easy_handle)
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slot = slot->next;
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if (slot != NULL) {
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xmulti_remove_handle(slot);
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slot->curl_result = curl_result;
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finish_active_slot(slot);
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} else {
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fprintf(stderr, "Received DONE message for unknown request!\n");
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}
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} else {
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fprintf(stderr, "Unknown CURL message received: %d\n",
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(int)curl_message->msg);
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}
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curl_message = curl_multi_info_read(curlm, &num_messages);
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}
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}
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#endif
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static int http_options(const char *var, const char *value, void *cb)
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{
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if (!strcmp("http.sslverify", var)) {
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curl_ssl_verify = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.sslcipherlist", var))
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return git_config_string(&ssl_cipherlist, var, value);
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if (!strcmp("http.sslversion", var))
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return git_config_string(&ssl_version, var, value);
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if (!strcmp("http.sslcert", var))
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return git_config_string(&ssl_cert, var, value);
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#if LIBCURL_VERSION_NUM >= 0x070903
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if (!strcmp("http.sslkey", var))
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return git_config_string(&ssl_key, var, value);
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#endif
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#if LIBCURL_VERSION_NUM >= 0x070908
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if (!strcmp("http.sslcapath", var))
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return git_config_pathname(&ssl_capath, var, value);
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#endif
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if (!strcmp("http.sslcainfo", var))
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return git_config_pathname(&ssl_cainfo, var, value);
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if (!strcmp("http.sslcertpasswordprotected", var)) {
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ssl_cert_password_required = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.ssltry", var)) {
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curl_ssl_try = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.minsessions", var)) {
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min_curl_sessions = git_config_int(var, value);
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#ifndef USE_CURL_MULTI
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if (min_curl_sessions > 1)
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min_curl_sessions = 1;
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#endif
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return 0;
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}
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#ifdef USE_CURL_MULTI
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if (!strcmp("http.maxrequests", var)) {
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max_requests = git_config_int(var, value);
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return 0;
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}
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#endif
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if (!strcmp("http.lowspeedlimit", var)) {
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curl_low_speed_limit = (long)git_config_int(var, value);
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return 0;
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}
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if (!strcmp("http.lowspeedtime", var)) {
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curl_low_speed_time = (long)git_config_int(var, value);
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return 0;
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}
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if (!strcmp("http.noepsv", var)) {
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curl_ftp_no_epsv = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.proxy", var))
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return git_config_string(&curl_http_proxy, var, value);
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if (!strcmp("http.proxyauthmethod", var))
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return git_config_string(&http_proxy_authmethod, var, value);
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if (!strcmp("http.cookiefile", var))
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return git_config_pathname(&curl_cookie_file, var, value);
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if (!strcmp("http.savecookies", var)) {
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curl_save_cookies = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.postbuffer", var)) {
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http_post_buffer = git_config_int(var, value);
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if (http_post_buffer < LARGE_PACKET_MAX)
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http_post_buffer = LARGE_PACKET_MAX;
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return 0;
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}
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if (!strcmp("http.useragent", var))
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return git_config_string(&user_agent, var, value);
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if (!strcmp("http.emptyauth", var)) {
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curl_empty_auth = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp("http.delegation", var)) {
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#if LIBCURL_VERSION_NUM >= 0x071600
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return git_config_string(&curl_deleg, var, value);
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#else
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warning(_("Delegation control is not supported with cURL < 7.22.0"));
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return 0;
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#endif
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}
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if (!strcmp("http.pinnedpubkey", var)) {
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#if LIBCURL_VERSION_NUM >= 0x072c00
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return git_config_pathname(&ssl_pinnedkey, var, value);
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#else
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warning(_("Public key pinning not supported with cURL < 7.44.0"));
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return 0;
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#endif
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}
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if (!strcmp("http.extraheader", var)) {
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if (!value) {
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return config_error_nonbool(var);
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} else if (!*value) {
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curl_slist_free_all(extra_http_headers);
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extra_http_headers = NULL;
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} else {
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extra_http_headers =
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curl_slist_append(extra_http_headers, value);
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}
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return 0;
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}
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/* Fall back on the default ones */
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return git_default_config(var, value, cb);
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}
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static void init_curl_http_auth(CURL *result)
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{
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if (!http_auth.username || !*http_auth.username) {
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if (curl_empty_auth)
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curl_easy_setopt(result, CURLOPT_USERPWD, ":");
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return;
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}
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credential_fill(&http_auth);
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#if LIBCURL_VERSION_NUM >= 0x071301
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curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username);
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curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password);
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#else
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{
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static struct strbuf up = STRBUF_INIT;
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/*
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* Note that we assume we only ever have a single set of
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* credentials in a given program run, so we do not have
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* to worry about updating this buffer, only setting its
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* initial value.
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*/
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if (!up.len)
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strbuf_addf(&up, "%s:%s",
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http_auth.username, http_auth.password);
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curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
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}
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#endif
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}
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/* *var must be free-able */
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static void var_override(const char **var, char *value)
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{
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if (value) {
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free((void *)*var);
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*var = xstrdup(value);
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}
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}
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static void set_proxyauth_name_password(CURL *result)
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{
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#if LIBCURL_VERSION_NUM >= 0x071301
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curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
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proxy_auth.username);
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curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
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proxy_auth.password);
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#else
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struct strbuf s = STRBUF_INIT;
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strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
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strbuf_addch(&s, ':');
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strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
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curl_proxyuserpwd = strbuf_detach(&s, NULL);
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curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
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#endif
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}
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static void init_curl_proxy_auth(CURL *result)
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{
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if (proxy_auth.username) {
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if (!proxy_auth.password)
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credential_fill(&proxy_auth);
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set_proxyauth_name_password(result);
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}
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var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
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#if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
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if (http_proxy_authmethod) {
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int i;
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for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
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if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
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curl_easy_setopt(result, CURLOPT_PROXYAUTH,
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proxy_authmethods[i].curlauth_param);
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break;
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}
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}
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if (i == ARRAY_SIZE(proxy_authmethods)) {
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warning("unsupported proxy authentication method %s: using anyauth",
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http_proxy_authmethod);
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curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
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}
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}
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else
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curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
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#endif
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}
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static int has_cert_password(void)
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{
|
|
if (ssl_cert == NULL || ssl_cert_password_required != 1)
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return 0;
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if (!cert_auth.password) {
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cert_auth.protocol = xstrdup("cert");
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cert_auth.username = xstrdup("");
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cert_auth.path = xstrdup(ssl_cert);
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credential_fill(&cert_auth);
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}
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return 1;
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}
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|
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#if LIBCURL_VERSION_NUM >= 0x071900
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static void set_curl_keepalive(CURL *c)
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{
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curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
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}
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#elif LIBCURL_VERSION_NUM >= 0x071000
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static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
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|
{
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int ka = 1;
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int rc;
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socklen_t len = (socklen_t)sizeof(ka);
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|
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if (type != CURLSOCKTYPE_IPCXN)
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return 0;
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rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
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if (rc < 0)
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warning_errno("unable to set SO_KEEPALIVE on socket");
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return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
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|
}
|
|
|
|
static void set_curl_keepalive(CURL *c)
|
|
{
|
|
curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
|
|
}
|
|
|
|
#else
|
|
static void set_curl_keepalive(CURL *c)
|
|
{
|
|
/* not supported on older curl versions */
|
|
}
|
|
#endif
|
|
|
|
static void redact_sensitive_header(struct strbuf *header)
|
|
{
|
|
const char *sensitive_header;
|
|
|
|
if (skip_prefix(header->buf, "Authorization:", &sensitive_header) ||
|
|
skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header)) {
|
|
/* The first token is the type, which is OK to log */
|
|
while (isspace(*sensitive_header))
|
|
sensitive_header++;
|
|
while (*sensitive_header && !isspace(*sensitive_header))
|
|
sensitive_header++;
|
|
/* Everything else is opaque and possibly sensitive */
|
|
strbuf_setlen(header, sensitive_header - header->buf);
|
|
strbuf_addstr(header, " <redacted>");
|
|
}
|
|
}
|
|
|
|
static void curl_dump_header(const char *text, unsigned char *ptr, size_t size, int hide_sensitive_header)
|
|
{
|
|
struct strbuf out = STRBUF_INIT;
|
|
struct strbuf **headers, **header;
|
|
|
|
strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
|
|
text, (long)size, (long)size);
|
|
trace_strbuf(&trace_curl, &out);
|
|
strbuf_reset(&out);
|
|
strbuf_add(&out, ptr, size);
|
|
headers = strbuf_split_max(&out, '\n', 0);
|
|
|
|
for (header = headers; *header; header++) {
|
|
if (hide_sensitive_header)
|
|
redact_sensitive_header(*header);
|
|
strbuf_insert((*header), 0, text, strlen(text));
|
|
strbuf_insert((*header), strlen(text), ": ", 2);
|
|
strbuf_rtrim((*header));
|
|
strbuf_addch((*header), '\n');
|
|
trace_strbuf(&trace_curl, (*header));
|
|
}
|
|
strbuf_list_free(headers);
|
|
strbuf_release(&out);
|
|
}
|
|
|
|
static void curl_dump_data(const char *text, unsigned char *ptr, size_t size)
|
|
{
|
|
size_t i;
|
|
struct strbuf out = STRBUF_INIT;
|
|
unsigned int width = 60;
|
|
|
|
strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
|
|
text, (long)size, (long)size);
|
|
trace_strbuf(&trace_curl, &out);
|
|
|
|
for (i = 0; i < size; i += width) {
|
|
size_t w;
|
|
|
|
strbuf_reset(&out);
|
|
strbuf_addf(&out, "%s: ", text);
|
|
for (w = 0; (w < width) && (i + w < size); w++) {
|
|
unsigned char ch = ptr[i + w];
|
|
|
|
strbuf_addch(&out,
|
|
(ch >= 0x20) && (ch < 0x80)
|
|
? ch : '.');
|
|
}
|
|
strbuf_addch(&out, '\n');
|
|
trace_strbuf(&trace_curl, &out);
|
|
}
|
|
strbuf_release(&out);
|
|
}
|
|
|
|
static int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp)
|
|
{
|
|
const char *text;
|
|
enum { NO_FILTER = 0, DO_FILTER = 1 };
|
|
|
|
switch (type) {
|
|
case CURLINFO_TEXT:
|
|
trace_printf_key(&trace_curl, "== Info: %s", data);
|
|
default: /* we ignore unknown types by default */
|
|
return 0;
|
|
|
|
case CURLINFO_HEADER_OUT:
|
|
text = "=> Send header";
|
|
curl_dump_header(text, (unsigned char *)data, size, DO_FILTER);
|
|
break;
|
|
case CURLINFO_DATA_OUT:
|
|
text = "=> Send data";
|
|
curl_dump_data(text, (unsigned char *)data, size);
|
|
break;
|
|
case CURLINFO_SSL_DATA_OUT:
|
|
text = "=> Send SSL data";
|
|
curl_dump_data(text, (unsigned char *)data, size);
|
|
break;
|
|
case CURLINFO_HEADER_IN:
|
|
text = "<= Recv header";
|
|
curl_dump_header(text, (unsigned char *)data, size, NO_FILTER);
|
|
break;
|
|
case CURLINFO_DATA_IN:
|
|
text = "<= Recv data";
|
|
curl_dump_data(text, (unsigned char *)data, size);
|
|
break;
|
|
case CURLINFO_SSL_DATA_IN:
|
|
text = "<= Recv SSL data";
|
|
curl_dump_data(text, (unsigned char *)data, size);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void setup_curl_trace(CURL *handle)
|
|
{
|
|
if (!trace_want(&trace_curl))
|
|
return;
|
|
curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L);
|
|
curl_easy_setopt(handle, CURLOPT_DEBUGFUNCTION, curl_trace);
|
|
curl_easy_setopt(handle, CURLOPT_DEBUGDATA, NULL);
|
|
}
|
|
|
|
|
|
static CURL *get_curl_handle(void)
|
|
{
|
|
CURL *result = curl_easy_init();
|
|
long allowed_protocols = 0;
|
|
|
|
if (!result)
|
|
die("curl_easy_init failed");
|
|
|
|
if (!curl_ssl_verify) {
|
|
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
|
|
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
|
|
} else {
|
|
/* Verify authenticity of the peer's certificate */
|
|
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
|
|
/* The name in the cert must match whom we tried to connect */
|
|
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
|
|
}
|
|
|
|
#if LIBCURL_VERSION_NUM >= 0x070907
|
|
curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
|
|
#endif
|
|
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
|
|
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
|
|
#endif
|
|
|
|
#if LIBCURL_VERSION_NUM >= 0x071600
|
|
if (curl_deleg) {
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(curl_deleg_levels); i++) {
|
|
if (!strcmp(curl_deleg, curl_deleg_levels[i].name)) {
|
|
curl_easy_setopt(result, CURLOPT_GSSAPI_DELEGATION,
|
|
curl_deleg_levels[i].curl_deleg_param);
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_SIZE(curl_deleg_levels))
|
|
warning("Unknown delegation method '%s': using default",
|
|
curl_deleg);
|
|
}
|
|
#endif
|
|
|
|
if (http_proactive_auth)
|
|
init_curl_http_auth(result);
|
|
|
|
if (getenv("GIT_SSL_VERSION"))
|
|
ssl_version = getenv("GIT_SSL_VERSION");
|
|
if (ssl_version && *ssl_version) {
|
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(sslversions); i++) {
|
|
if (!strcmp(ssl_version, sslversions[i].name)) {
|
|
curl_easy_setopt(result, CURLOPT_SSLVERSION,
|
|
sslversions[i].ssl_version);
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_SIZE(sslversions))
|
|
warning("unsupported ssl version %s: using default",
|
|
ssl_version);
|
|
}
|
|
|
|
if (getenv("GIT_SSL_CIPHER_LIST"))
|
|
ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
|
|
if (ssl_cipherlist != NULL && *ssl_cipherlist)
|
|
curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
|
|
ssl_cipherlist);
|
|
|
|
if (ssl_cert != NULL)
|
|
curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
|
|
if (has_cert_password())
|
|
curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password);
|
|
#if LIBCURL_VERSION_NUM >= 0x070903
|
|
if (ssl_key != NULL)
|
|
curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
|
|
#endif
|
|
#if LIBCURL_VERSION_NUM >= 0x070908
|
|
if (ssl_capath != NULL)
|
|
curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
|
|
#endif
|
|
#if LIBCURL_VERSION_NUM >= 0x072c00
|
|
if (ssl_pinnedkey != NULL)
|
|
curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
|
|
#endif
|
|
if (ssl_cainfo != NULL)
|
|
curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
|
|
|
|
if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
|
|
curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
|
|
curl_low_speed_limit);
|
|
curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
|
|
curl_low_speed_time);
|
|
}
|
|
|
|
curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
|
|
curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
|
|
#if LIBCURL_VERSION_NUM >= 0x071301
|
|
curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
|
|
#elif LIBCURL_VERSION_NUM >= 0x071101
|
|
curl_easy_setopt(result, CURLOPT_POST301, 1);
|
|
#endif
|
|
#if LIBCURL_VERSION_NUM >= 0x071304
|
|
if (is_transport_allowed("http"))
|
|
allowed_protocols |= CURLPROTO_HTTP;
|
|
if (is_transport_allowed("https"))
|
|
allowed_protocols |= CURLPROTO_HTTPS;
|
|
if (is_transport_allowed("ftp"))
|
|
allowed_protocols |= CURLPROTO_FTP;
|
|
if (is_transport_allowed("ftps"))
|
|
allowed_protocols |= CURLPROTO_FTPS;
|
|
curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS, allowed_protocols);
|
|
#else
|
|
if (transport_restrict_protocols())
|
|
warning("protocol restrictions not applied to curl redirects because\n"
|
|
"your curl version is too old (>= 7.19.4)");
|
|
#endif
|
|
if (getenv("GIT_CURL_VERBOSE"))
|
|
curl_easy_setopt(result, CURLOPT_VERBOSE, 1L);
|
|
setup_curl_trace(result);
|
|
|
|
curl_easy_setopt(result, CURLOPT_USERAGENT,
|
|
user_agent ? user_agent : git_user_agent());
|
|
|
|
if (curl_ftp_no_epsv)
|
|
curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
|
|
|
|
#ifdef CURLOPT_USE_SSL
|
|
if (curl_ssl_try)
|
|
curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
|
|
#endif
|
|
|
|
/*
|
|
* CURL also examines these variables as a fallback; but we need to query
|
|
* them here in order to decide whether to prompt for missing password (cf.
|
|
* init_curl_proxy_auth()).
|
|
*
|
|
* Unlike many other common environment variables, these are historically
|
|
* lowercase only. It appears that CURL did not know this and implemented
|
|
* only uppercase variants, which was later corrected to take both - with
|
|
* the exception of http_proxy, which is lowercase only also in CURL. As
|
|
* the lowercase versions are the historical quasi-standard, they take
|
|
* precedence here, as in CURL.
|
|
*/
|
|
if (!curl_http_proxy) {
|
|
if (http_auth.protocol && !strcmp(http_auth.protocol, "https")) {
|
|
var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
|
|
var_override(&curl_http_proxy, getenv("https_proxy"));
|
|
} else {
|
|
var_override(&curl_http_proxy, getenv("http_proxy"));
|
|
}
|
|
if (!curl_http_proxy) {
|
|
var_override(&curl_http_proxy, getenv("ALL_PROXY"));
|
|
var_override(&curl_http_proxy, getenv("all_proxy"));
|
|
}
|
|
}
|
|
|
|
if (curl_http_proxy) {
|
|
curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
|
|
#if LIBCURL_VERSION_NUM >= 0x071800
|
|
if (starts_with(curl_http_proxy, "socks5h"))
|
|
curl_easy_setopt(result,
|
|
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
|
|
else if (starts_with(curl_http_proxy, "socks5"))
|
|
curl_easy_setopt(result,
|
|
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
|
|
else if (starts_with(curl_http_proxy, "socks4a"))
|
|
curl_easy_setopt(result,
|
|
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
|
|
else if (starts_with(curl_http_proxy, "socks"))
|
|
curl_easy_setopt(result,
|
|
CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
|
|
#endif
|
|
if (strstr(curl_http_proxy, "://"))
|
|
credential_from_url(&proxy_auth, curl_http_proxy);
|
|
else {
|
|
struct strbuf url = STRBUF_INIT;
|
|
strbuf_addf(&url, "http://%s", curl_http_proxy);
|
|
credential_from_url(&proxy_auth, url.buf);
|
|
strbuf_release(&url);
|
|
}
|
|
|
|
curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
|
|
#if LIBCURL_VERSION_NUM >= 0x071304
|
|
var_override(&curl_no_proxy, getenv("NO_PROXY"));
|
|
var_override(&curl_no_proxy, getenv("no_proxy"));
|
|
curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
|
|
#endif
|
|
}
|
|
init_curl_proxy_auth(result);
|
|
|
|
set_curl_keepalive(result);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void set_from_env(const char **var, const char *envname)
|
|
{
|
|
const char *val = getenv(envname);
|
|
if (val)
|
|
*var = val;
|
|
}
|
|
|
|
void http_init(struct remote *remote, const char *url, int proactive_auth)
|
|
{
|
|
char *low_speed_limit;
|
|
char *low_speed_time;
|
|
char *normalized_url;
|
|
struct urlmatch_config config = { STRING_LIST_INIT_DUP };
|
|
|
|
config.section = "http";
|
|
config.key = NULL;
|
|
config.collect_fn = http_options;
|
|
config.cascade_fn = git_default_config;
|
|
config.cb = NULL;
|
|
|
|
http_is_verbose = 0;
|
|
normalized_url = url_normalize(url, &config.url);
|
|
|
|
git_config(urlmatch_config_entry, &config);
|
|
free(normalized_url);
|
|
|
|
if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
|
|
die("curl_global_init failed");
|
|
|
|
http_proactive_auth = proactive_auth;
|
|
|
|
if (remote && remote->http_proxy)
|
|
curl_http_proxy = xstrdup(remote->http_proxy);
|
|
|
|
if (remote)
|
|
var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
|
|
|
|
pragma_header = curl_slist_append(http_copy_default_headers(),
|
|
"Pragma: no-cache");
|
|
no_pragma_header = curl_slist_append(http_copy_default_headers(),
|
|
"Pragma:");
|
|
|
|
#ifdef USE_CURL_MULTI
|
|
{
|
|
char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
|
|
if (http_max_requests != NULL)
|
|
max_requests = atoi(http_max_requests);
|
|
}
|
|
|
|
curlm = curl_multi_init();
|
|
if (!curlm)
|
|
die("curl_multi_init failed");
|
|
#endif
|
|
|
|
if (getenv("GIT_SSL_NO_VERIFY"))
|
|
curl_ssl_verify = 0;
|
|
|
|
set_from_env(&ssl_cert, "GIT_SSL_CERT");
|
|
#if LIBCURL_VERSION_NUM >= 0x070903
|
|
set_from_env(&ssl_key, "GIT_SSL_KEY");
|
|
#endif
|
|
#if LIBCURL_VERSION_NUM >= 0x070908
|
|
set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
|
|
#endif
|
|
set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
|
|
|
|
set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
|
|
|
|
low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
|
|
if (low_speed_limit != NULL)
|
|
curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
|
|
low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
|
|
if (low_speed_time != NULL)
|
|
curl_low_speed_time = strtol(low_speed_time, NULL, 10);
|
|
|
|
if (curl_ssl_verify == -1)
|
|
curl_ssl_verify = 1;
|
|
|
|
curl_session_count = 0;
|
|
#ifdef USE_CURL_MULTI
|
|
if (max_requests < 1)
|
|
max_requests = DEFAULT_MAX_REQUESTS;
|
|
#endif
|
|
|
|
if (getenv("GIT_CURL_FTP_NO_EPSV"))
|
|
curl_ftp_no_epsv = 1;
|
|
|
|
if (url) {
|
|
credential_from_url(&http_auth, url);
|
|
if (!ssl_cert_password_required &&
|
|
getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
|
|
starts_with(url, "https://"))
|
|
ssl_cert_password_required = 1;
|
|
}
|
|
|
|
#ifndef NO_CURL_EASY_DUPHANDLE
|
|
curl_default = get_curl_handle();
|
|
#endif
|
|
}
|
|
|
|
void http_cleanup(void)
|
|
{
|
|
struct active_request_slot *slot = active_queue_head;
|
|
|
|
while (slot != NULL) {
|
|
struct active_request_slot *next = slot->next;
|
|
if (slot->curl != NULL) {
|
|
xmulti_remove_handle(slot);
|
|
curl_easy_cleanup(slot->curl);
|
|
}
|
|
free(slot);
|
|
slot = next;
|
|
}
|
|
active_queue_head = NULL;
|
|
|
|
#ifndef NO_CURL_EASY_DUPHANDLE
|
|
curl_easy_cleanup(curl_default);
|
|
#endif
|
|
|
|
#ifdef USE_CURL_MULTI
|
|
curl_multi_cleanup(curlm);
|
|
#endif
|
|
curl_global_cleanup();
|
|
|
|
curl_slist_free_all(extra_http_headers);
|
|
extra_http_headers = NULL;
|
|
|
|
curl_slist_free_all(pragma_header);
|
|
pragma_header = NULL;
|
|
|
|
curl_slist_free_all(no_pragma_header);
|
|
no_pragma_header = NULL;
|
|
|
|
if (curl_http_proxy) {
|
|
free((void *)curl_http_proxy);
|
|
curl_http_proxy = NULL;
|
|
}
|
|
|
|
if (proxy_auth.password) {
|
|
memset(proxy_auth.password, 0, strlen(proxy_auth.password));
|
|
free(proxy_auth.password);
|
|
proxy_auth.password = NULL;
|
|
}
|
|
|
|
free((void *)curl_proxyuserpwd);
|
|
curl_proxyuserpwd = NULL;
|
|
|
|
free((void *)http_proxy_authmethod);
|
|
http_proxy_authmethod = NULL;
|
|
|
|
if (cert_auth.password != NULL) {
|
|
memset(cert_auth.password, 0, strlen(cert_auth.password));
|
|
free(cert_auth.password);
|
|
cert_auth.password = NULL;
|
|
}
|
|
ssl_cert_password_required = 0;
|
|
|
|
free(cached_accept_language);
|
|
cached_accept_language = NULL;
|
|
}
|
|
|
|
struct active_request_slot *get_active_slot(void)
|
|
{
|
|
struct active_request_slot *slot = active_queue_head;
|
|
struct active_request_slot *newslot;
|
|
|
|
#ifdef USE_CURL_MULTI
|
|
int num_transfers;
|
|
|
|
/* Wait for a slot to open up if the queue is full */
|
|
while (active_requests >= max_requests) {
|
|
curl_multi_perform(curlm, &num_transfers);
|
|
if (num_transfers < active_requests)
|
|
process_curl_messages();
|
|
}
|
|
#endif
|
|
|
|
while (slot != NULL && slot->in_use)
|
|
slot = slot->next;
|
|
|
|
if (slot == NULL) {
|
|
newslot = xmalloc(sizeof(*newslot));
|
|
newslot->curl = NULL;
|
|
newslot->in_use = 0;
|
|
newslot->next = NULL;
|
|
|
|
slot = active_queue_head;
|
|
if (slot == NULL) {
|
|
active_queue_head = newslot;
|
|
} else {
|
|
while (slot->next != NULL)
|
|
slot = slot->next;
|
|
slot->next = newslot;
|
|
}
|
|
slot = newslot;
|
|
}
|
|
|
|
if (slot->curl == NULL) {
|
|
#ifdef NO_CURL_EASY_DUPHANDLE
|
|
slot->curl = get_curl_handle();
|
|
#else
|
|
slot->curl = curl_easy_duphandle(curl_default);
|
|
#endif
|
|
curl_session_count++;
|
|
}
|
|
|
|
active_requests++;
|
|
slot->in_use = 1;
|
|
slot->results = NULL;
|
|
slot->finished = NULL;
|
|
slot->callback_data = NULL;
|
|
slot->callback_func = NULL;
|
|
curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
|
|
if (curl_save_cookies)
|
|
curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
|
|
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
|
|
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
|
|
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
|
|
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
|
|
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
|
|
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
|
|
curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
|
|
|
|
#if LIBCURL_VERSION_NUM >= 0x070a08
|
|
curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
|
|
#endif
|
|
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
|
|
#endif
|
|
if (http_auth.password || curl_empty_auth)
|
|
init_curl_http_auth(slot->curl);
|
|
|
|
return slot;
|
|
}
|
|
|
|
int start_active_slot(struct active_request_slot *slot)
|
|
{
|
|
#ifdef USE_CURL_MULTI
|
|
CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
|
|
int num_transfers;
|
|
|
|
if (curlm_result != CURLM_OK &&
|
|
curlm_result != CURLM_CALL_MULTI_PERFORM) {
|
|
warning("curl_multi_add_handle failed: %s",
|
|
curl_multi_strerror(curlm_result));
|
|
active_requests--;
|
|
slot->in_use = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We know there must be something to do, since we just added
|
|
* something.
|
|
*/
|
|
curl_multi_perform(curlm, &num_transfers);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
#ifdef USE_CURL_MULTI
|
|
struct fill_chain {
|
|
void *data;
|
|
int (*fill)(void *);
|
|
struct fill_chain *next;
|
|
};
|
|
|
|
static struct fill_chain *fill_cfg;
|
|
|
|
void add_fill_function(void *data, int (*fill)(void *))
|
|
{
|
|
struct fill_chain *new = xmalloc(sizeof(*new));
|
|
struct fill_chain **linkp = &fill_cfg;
|
|
new->data = data;
|
|
new->fill = fill;
|
|
new->next = NULL;
|
|
while (*linkp)
|
|
linkp = &(*linkp)->next;
|
|
*linkp = new;
|
|
}
|
|
|
|
void fill_active_slots(void)
|
|
{
|
|
struct active_request_slot *slot = active_queue_head;
|
|
|
|
while (active_requests < max_requests) {
|
|
struct fill_chain *fill;
|
|
for (fill = fill_cfg; fill; fill = fill->next)
|
|
if (fill->fill(fill->data))
|
|
break;
|
|
|
|
if (!fill)
|
|
break;
|
|
}
|
|
|
|
while (slot != NULL) {
|
|
if (!slot->in_use && slot->curl != NULL
|
|
&& curl_session_count > min_curl_sessions) {
|
|
curl_easy_cleanup(slot->curl);
|
|
slot->curl = NULL;
|
|
curl_session_count--;
|
|
}
|
|
slot = slot->next;
|
|
}
|
|
}
|
|
|
|
void step_active_slots(void)
|
|
{
|
|
int num_transfers;
|
|
CURLMcode curlm_result;
|
|
|
|
do {
|
|
curlm_result = curl_multi_perform(curlm, &num_transfers);
|
|
} while (curlm_result == CURLM_CALL_MULTI_PERFORM);
|
|
if (num_transfers < active_requests) {
|
|
process_curl_messages();
|
|
fill_active_slots();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void run_active_slot(struct active_request_slot *slot)
|
|
{
|
|
#ifdef USE_CURL_MULTI
|
|
fd_set readfds;
|
|
fd_set writefds;
|
|
fd_set excfds;
|
|
int max_fd;
|
|
struct timeval select_timeout;
|
|
int finished = 0;
|
|
|
|
slot->finished = &finished;
|
|
while (!finished) {
|
|
step_active_slots();
|
|
|
|
if (slot->in_use) {
|
|
#if LIBCURL_VERSION_NUM >= 0x070f04
|
|
long curl_timeout;
|
|
curl_multi_timeout(curlm, &curl_timeout);
|
|
if (curl_timeout == 0) {
|
|
continue;
|
|
} else if (curl_timeout == -1) {
|
|
select_timeout.tv_sec = 0;
|
|
select_timeout.tv_usec = 50000;
|
|
} else {
|
|
select_timeout.tv_sec = curl_timeout / 1000;
|
|
select_timeout.tv_usec = (curl_timeout % 1000) * 1000;
|
|
}
|
|
#else
|
|
select_timeout.tv_sec = 0;
|
|
select_timeout.tv_usec = 50000;
|
|
#endif
|
|
|
|
max_fd = -1;
|
|
FD_ZERO(&readfds);
|
|
FD_ZERO(&writefds);
|
|
FD_ZERO(&excfds);
|
|
curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd);
|
|
|
|
/*
|
|
* It can happen that curl_multi_timeout returns a pathologically
|
|
* long timeout when curl_multi_fdset returns no file descriptors
|
|
* to read. See commit message for more details.
|
|
*/
|
|
if (max_fd < 0 &&
|
|
(select_timeout.tv_sec > 0 ||
|
|
select_timeout.tv_usec > 50000)) {
|
|
select_timeout.tv_sec = 0;
|
|
select_timeout.tv_usec = 50000;
|
|
}
|
|
|
|
select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout);
|
|
}
|
|
}
|
|
#else
|
|
while (slot->in_use) {
|
|
slot->curl_result = curl_easy_perform(slot->curl);
|
|
finish_active_slot(slot);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void release_active_slot(struct active_request_slot *slot)
|
|
{
|
|
closedown_active_slot(slot);
|
|
if (slot->curl) {
|
|
xmulti_remove_handle(slot);
|
|
if (curl_session_count > min_curl_sessions) {
|
|
curl_easy_cleanup(slot->curl);
|
|
slot->curl = NULL;
|
|
curl_session_count--;
|
|
}
|
|
}
|
|
#ifdef USE_CURL_MULTI
|
|
fill_active_slots();
|
|
#endif
|
|
}
|
|
|
|
void finish_all_active_slots(void)
|
|
{
|
|
struct active_request_slot *slot = active_queue_head;
|
|
|
|
while (slot != NULL)
|
|
if (slot->in_use) {
|
|
run_active_slot(slot);
|
|
slot = active_queue_head;
|
|
} else {
|
|
slot = slot->next;
|
|
}
|
|
}
|
|
|
|
/* Helpers for modifying and creating URLs */
|
|
static inline int needs_quote(int ch)
|
|
{
|
|
if (((ch >= 'A') && (ch <= 'Z'))
|
|
|| ((ch >= 'a') && (ch <= 'z'))
|
|
|| ((ch >= '0') && (ch <= '9'))
|
|
|| (ch == '/')
|
|
|| (ch == '-')
|
|
|| (ch == '.'))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static char *quote_ref_url(const char *base, const char *ref)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
const char *cp;
|
|
int ch;
|
|
|
|
end_url_with_slash(&buf, base);
|
|
|
|
for (cp = ref; (ch = *cp) != 0; cp++)
|
|
if (needs_quote(ch))
|
|
strbuf_addf(&buf, "%%%02x", ch);
|
|
else
|
|
strbuf_addch(&buf, *cp);
|
|
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
void append_remote_object_url(struct strbuf *buf, const char *url,
|
|
const char *hex,
|
|
int only_two_digit_prefix)
|
|
{
|
|
end_url_with_slash(buf, url);
|
|
|
|
strbuf_addf(buf, "objects/%.*s/", 2, hex);
|
|
if (!only_two_digit_prefix)
|
|
strbuf_addstr(buf, hex + 2);
|
|
}
|
|
|
|
char *get_remote_object_url(const char *url, const char *hex,
|
|
int only_two_digit_prefix)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static int handle_curl_result(struct slot_results *results)
|
|
{
|
|
/*
|
|
* If we see a failing http code with CURLE_OK, we have turned off
|
|
* FAILONERROR (to keep the server's custom error response), and should
|
|
* translate the code into failure here.
|
|
*/
|
|
if (results->curl_result == CURLE_OK &&
|
|
results->http_code >= 400) {
|
|
results->curl_result = CURLE_HTTP_RETURNED_ERROR;
|
|
/*
|
|
* Normally curl will already have put the "reason phrase"
|
|
* from the server into curl_errorstr; unfortunately without
|
|
* FAILONERROR it is lost, so we can give only the numeric
|
|
* status code.
|
|
*/
|
|
snprintf(curl_errorstr, sizeof(curl_errorstr),
|
|
"The requested URL returned error: %ld",
|
|
results->http_code);
|
|
}
|
|
|
|
if (results->curl_result == CURLE_OK) {
|
|
credential_approve(&http_auth);
|
|
if (proxy_auth.password)
|
|
credential_approve(&proxy_auth);
|
|
return HTTP_OK;
|
|
} else if (missing_target(results))
|
|
return HTTP_MISSING_TARGET;
|
|
else if (results->http_code == 401) {
|
|
if (http_auth.username && http_auth.password) {
|
|
credential_reject(&http_auth);
|
|
return HTTP_NOAUTH;
|
|
} else {
|
|
#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
|
|
http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
|
|
#endif
|
|
return HTTP_REAUTH;
|
|
}
|
|
} else {
|
|
if (results->http_connectcode == 407)
|
|
credential_reject(&proxy_auth);
|
|
#if LIBCURL_VERSION_NUM >= 0x070c00
|
|
if (!curl_errorstr[0])
|
|
strlcpy(curl_errorstr,
|
|
curl_easy_strerror(results->curl_result),
|
|
sizeof(curl_errorstr));
|
|
#endif
|
|
return HTTP_ERROR;
|
|
}
|
|
}
|
|
|
|
int run_one_slot(struct active_request_slot *slot,
|
|
struct slot_results *results)
|
|
{
|
|
slot->results = results;
|
|
if (!start_active_slot(slot)) {
|
|
snprintf(curl_errorstr, sizeof(curl_errorstr),
|
|
"failed to start HTTP request");
|
|
return HTTP_START_FAILED;
|
|
}
|
|
|
|
run_active_slot(slot);
|
|
return handle_curl_result(results);
|
|
}
|
|
|
|
struct curl_slist *http_copy_default_headers(void)
|
|
{
|
|
struct curl_slist *headers = NULL, *h;
|
|
|
|
for (h = extra_http_headers; h; h = h->next)
|
|
headers = curl_slist_append(headers, h->data);
|
|
|
|
return headers;
|
|
}
|
|
|
|
static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
|
|
{
|
|
char *ptr;
|
|
CURLcode ret;
|
|
|
|
strbuf_reset(buf);
|
|
ret = curl_easy_getinfo(curl, info, &ptr);
|
|
if (!ret && ptr)
|
|
strbuf_addstr(buf, ptr);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Check for and extract a content-type parameter. "raw"
|
|
* should be positioned at the start of the potential
|
|
* parameter, with any whitespace already removed.
|
|
*
|
|
* "name" is the name of the parameter. The value is appended
|
|
* to "out".
|
|
*/
|
|
static int extract_param(const char *raw, const char *name,
|
|
struct strbuf *out)
|
|
{
|
|
size_t len = strlen(name);
|
|
|
|
if (strncasecmp(raw, name, len))
|
|
return -1;
|
|
raw += len;
|
|
|
|
if (*raw != '=')
|
|
return -1;
|
|
raw++;
|
|
|
|
while (*raw && !isspace(*raw) && *raw != ';')
|
|
strbuf_addch(out, *raw++);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Extract a normalized version of the content type, with any
|
|
* spaces suppressed, all letters lowercased, and no trailing ";"
|
|
* or parameters.
|
|
*
|
|
* Note that we will silently remove even invalid whitespace. For
|
|
* example, "text / plain" is specifically forbidden by RFC 2616,
|
|
* but "text/plain" is the only reasonable output, and this keeps
|
|
* our code simple.
|
|
*
|
|
* If the "charset" argument is not NULL, store the value of any
|
|
* charset parameter there.
|
|
*
|
|
* Example:
|
|
* "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
|
|
* "text / plain" -> "text/plain"
|
|
*/
|
|
static void extract_content_type(struct strbuf *raw, struct strbuf *type,
|
|
struct strbuf *charset)
|
|
{
|
|
const char *p;
|
|
|
|
strbuf_reset(type);
|
|
strbuf_grow(type, raw->len);
|
|
for (p = raw->buf; *p; p++) {
|
|
if (isspace(*p))
|
|
continue;
|
|
if (*p == ';') {
|
|
p++;
|
|
break;
|
|
}
|
|
strbuf_addch(type, tolower(*p));
|
|
}
|
|
|
|
if (!charset)
|
|
return;
|
|
|
|
strbuf_reset(charset);
|
|
while (*p) {
|
|
while (isspace(*p) || *p == ';')
|
|
p++;
|
|
if (!extract_param(p, "charset", charset))
|
|
return;
|
|
while (*p && !isspace(*p))
|
|
p++;
|
|
}
|
|
|
|
if (!charset->len && starts_with(type->buf, "text/"))
|
|
strbuf_addstr(charset, "ISO-8859-1");
|
|
}
|
|
|
|
static void write_accept_language(struct strbuf *buf)
|
|
{
|
|
/*
|
|
* MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
|
|
* that, q-value will be smaller than 0.001, the minimum q-value the
|
|
* HTTP specification allows. See
|
|
* http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
|
|
*/
|
|
const int MAX_DECIMAL_PLACES = 3;
|
|
const int MAX_LANGUAGE_TAGS = 1000;
|
|
const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
|
|
char **language_tags = NULL;
|
|
int num_langs = 0;
|
|
const char *s = get_preferred_languages();
|
|
int i;
|
|
struct strbuf tag = STRBUF_INIT;
|
|
|
|
/* Don't add Accept-Language header if no language is preferred. */
|
|
if (!s)
|
|
return;
|
|
|
|
/*
|
|
* Split the colon-separated string of preferred languages into
|
|
* language_tags array.
|
|
*/
|
|
do {
|
|
/* collect language tag */
|
|
for (; *s && (isalnum(*s) || *s == '_'); s++)
|
|
strbuf_addch(&tag, *s == '_' ? '-' : *s);
|
|
|
|
/* skip .codeset, @modifier and any other unnecessary parts */
|
|
while (*s && *s != ':')
|
|
s++;
|
|
|
|
if (tag.len) {
|
|
num_langs++;
|
|
REALLOC_ARRAY(language_tags, num_langs);
|
|
language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
|
|
if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
|
|
break;
|
|
}
|
|
} while (*s++);
|
|
|
|
/* write Accept-Language header into buf */
|
|
if (num_langs) {
|
|
int last_buf_len = 0;
|
|
int max_q;
|
|
int decimal_places;
|
|
char q_format[32];
|
|
|
|
/* add '*' */
|
|
REALLOC_ARRAY(language_tags, num_langs + 1);
|
|
language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
|
|
|
|
/* compute decimal_places */
|
|
for (max_q = 1, decimal_places = 0;
|
|
max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
|
|
decimal_places++, max_q *= 10)
|
|
;
|
|
|
|
xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
|
|
|
|
strbuf_addstr(buf, "Accept-Language: ");
|
|
|
|
for (i = 0; i < num_langs; i++) {
|
|
if (i > 0)
|
|
strbuf_addstr(buf, ", ");
|
|
|
|
strbuf_addstr(buf, language_tags[i]);
|
|
|
|
if (i > 0)
|
|
strbuf_addf(buf, q_format, max_q - i);
|
|
|
|
if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
|
|
strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
|
|
break;
|
|
}
|
|
|
|
last_buf_len = buf->len;
|
|
}
|
|
}
|
|
|
|
/* free language tags -- last one is a static '*' */
|
|
for (i = 0; i < num_langs - 1; i++)
|
|
free(language_tags[i]);
|
|
free(language_tags);
|
|
}
|
|
|
|
/*
|
|
* Get an Accept-Language header which indicates user's preferred languages.
|
|
*
|
|
* Examples:
|
|
* LANGUAGE= -> ""
|
|
* LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
|
|
* LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
|
|
* LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
|
|
* LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
|
|
* LANGUAGE= LANG=C -> ""
|
|
*/
|
|
static const char *get_accept_language(void)
|
|
{
|
|
if (!cached_accept_language) {
|
|
struct strbuf buf = STRBUF_INIT;
|
|
write_accept_language(&buf);
|
|
if (buf.len > 0)
|
|
cached_accept_language = strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
return cached_accept_language;
|
|
}
|
|
|
|
static void http_opt_request_remainder(CURL *curl, off_t pos)
|
|
{
|
|
char buf[128];
|
|
xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
|
|
curl_easy_setopt(curl, CURLOPT_RANGE, buf);
|
|
}
|
|
|
|
/* http_request() targets */
|
|
#define HTTP_REQUEST_STRBUF 0
|
|
#define HTTP_REQUEST_FILE 1
|
|
|
|
static int http_request(const char *url,
|
|
void *result, int target,
|
|
const struct http_get_options *options)
|
|
{
|
|
struct active_request_slot *slot;
|
|
struct slot_results results;
|
|
struct curl_slist *headers = http_copy_default_headers();
|
|
struct strbuf buf = STRBUF_INIT;
|
|
const char *accept_language;
|
|
int ret;
|
|
|
|
slot = get_active_slot();
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
|
|
|
|
if (result == NULL) {
|
|
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
|
|
} else {
|
|
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
|
|
curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
|
|
|
|
if (target == HTTP_REQUEST_FILE) {
|
|
off_t posn = ftello(result);
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
|
|
fwrite);
|
|
if (posn > 0)
|
|
http_opt_request_remainder(slot->curl, posn);
|
|
} else
|
|
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
|
|
fwrite_buffer);
|
|
}
|
|
|
|
accept_language = get_accept_language();
|
|
|
|
if (accept_language)
|
|
headers = curl_slist_append(headers, accept_language);
|
|
|
|
strbuf_addstr(&buf, "Pragma:");
|
|
if (options && options->no_cache)
|
|
strbuf_addstr(&buf, " no-cache");
|
|
if (options && options->keep_error)
|
|
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
|
|
|
|
headers = curl_slist_append(headers, buf.buf);
|
|
|
|
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
|
|
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
|
|
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
|
|
|
|
ret = run_one_slot(slot, &results);
|
|
|
|
if (options && options->content_type) {
|
|
struct strbuf raw = STRBUF_INIT;
|
|
curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
|
|
extract_content_type(&raw, options->content_type,
|
|
options->charset);
|
|
strbuf_release(&raw);
|
|
}
|
|
|
|
if (options && options->effective_url)
|
|
curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
|
|
options->effective_url);
|
|
|
|
curl_slist_free_all(headers);
|
|
strbuf_release(&buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Update the "base" url to a more appropriate value, as deduced by
|
|
* redirects seen when requesting a URL starting with "url".
|
|
*
|
|
* The "asked" parameter is a URL that we asked curl to access, and must begin
|
|
* with "base".
|
|
*
|
|
* The "got" parameter is the URL that curl reported to us as where we ended
|
|
* up.
|
|
*
|
|
* Returns 1 if we updated the base url, 0 otherwise.
|
|
*
|
|
* Our basic strategy is to compare "base" and "asked" to find the bits
|
|
* specific to our request. We then strip those bits off of "got" to yield the
|
|
* new base. So for example, if our base is "http://example.com/foo.git",
|
|
* and we ask for "http://example.com/foo.git/info/refs", we might end up
|
|
* with "https://other.example.com/foo.git/info/refs". We would want the
|
|
* new URL to become "https://other.example.com/foo.git".
|
|
*
|
|
* Note that this assumes a sane redirect scheme. It's entirely possible
|
|
* in the example above to end up at a URL that does not even end in
|
|
* "info/refs". In such a case we simply punt, as there is not much we can
|
|
* do (and such a scheme is unlikely to represent a real git repository,
|
|
* which means we are likely about to abort anyway).
|
|
*/
|
|
static int update_url_from_redirect(struct strbuf *base,
|
|
const char *asked,
|
|
const struct strbuf *got)
|
|
{
|
|
const char *tail;
|
|
size_t tail_len;
|
|
|
|
if (!strcmp(asked, got->buf))
|
|
return 0;
|
|
|
|
if (!skip_prefix(asked, base->buf, &tail))
|
|
die("BUG: update_url_from_redirect: %s is not a superset of %s",
|
|
asked, base->buf);
|
|
|
|
tail_len = strlen(tail);
|
|
|
|
if (got->len < tail_len ||
|
|
strcmp(tail, got->buf + got->len - tail_len))
|
|
return 0; /* insane redirect scheme */
|
|
|
|
strbuf_reset(base);
|
|
strbuf_add(base, got->buf, got->len - tail_len);
|
|
return 1;
|
|
}
|
|
|
|
static int http_request_reauth(const char *url,
|
|
void *result, int target,
|
|
struct http_get_options *options)
|
|
{
|
|
int ret = http_request(url, result, target, options);
|
|
|
|
if (options && options->effective_url && options->base_url) {
|
|
if (update_url_from_redirect(options->base_url,
|
|
url, options->effective_url)) {
|
|
credential_from_url(&http_auth, options->base_url->buf);
|
|
url = options->effective_url->buf;
|
|
}
|
|
}
|
|
|
|
if (ret != HTTP_REAUTH)
|
|
return ret;
|
|
|
|
/*
|
|
* If we are using KEEP_ERROR, the previous request may have
|
|
* put cruft into our output stream; we should clear it out before
|
|
* making our next request. We only know how to do this for
|
|
* the strbuf case, but that is enough to satisfy current callers.
|
|
*/
|
|
if (options && options->keep_error) {
|
|
switch (target) {
|
|
case HTTP_REQUEST_STRBUF:
|
|
strbuf_reset(result);
|
|
break;
|
|
default:
|
|
die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
|
|
}
|
|
}
|
|
|
|
credential_fill(&http_auth);
|
|
|
|
return http_request(url, result, target, options);
|
|
}
|
|
|
|
int http_get_strbuf(const char *url,
|
|
struct strbuf *result,
|
|
struct http_get_options *options)
|
|
{
|
|
return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
|
|
}
|
|
|
|
/*
|
|
* Downloads a 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.
|
|
*/
|
|
static int http_get_file(const char *url, const char *filename,
|
|
struct http_get_options *options)
|
|
{
|
|
int ret;
|
|
struct strbuf tmpfile = STRBUF_INIT;
|
|
FILE *result;
|
|
|
|
strbuf_addf(&tmpfile, "%s.temp", filename);
|
|
result = fopen(tmpfile.buf, "a");
|
|
if (!result) {
|
|
error("Unable to open local file %s", tmpfile.buf);
|
|
ret = HTTP_ERROR;
|
|
goto cleanup;
|
|
}
|
|
|
|
ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
|
|
fclose(result);
|
|
|
|
if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
|
|
ret = HTTP_ERROR;
|
|
cleanup:
|
|
strbuf_release(&tmpfile);
|
|
return ret;
|
|
}
|
|
|
|
int http_fetch_ref(const char *base, struct ref *ref)
|
|
{
|
|
struct http_get_options options = {0};
|
|
char *url;
|
|
struct strbuf buffer = STRBUF_INIT;
|
|
int ret = -1;
|
|
|
|
options.no_cache = 1;
|
|
|
|
url = quote_ref_url(base, ref->name);
|
|
if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
|
|
strbuf_rtrim(&buffer);
|
|
if (buffer.len == 40)
|
|
ret = get_oid_hex(buffer.buf, &ref->old_oid);
|
|
else if (starts_with(buffer.buf, "ref: ")) {
|
|
ref->symref = xstrdup(buffer.buf + 5);
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
strbuf_release(&buffer);
|
|
free(url);
|
|
return ret;
|
|
}
|
|
|
|
/* Helpers for fetching packs */
|
|
static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
|
|
{
|
|
char *url, *tmp;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
|
|
if (http_is_verbose)
|
|
fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
|
|
|
|
end_url_with_slash(&buf, base_url);
|
|
strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
|
|
url = strbuf_detach(&buf, NULL);
|
|
|
|
strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
|
|
tmp = strbuf_detach(&buf, NULL);
|
|
|
|
if (http_get_file(url, tmp, NULL) != HTTP_OK) {
|
|
error("Unable to get pack index %s", url);
|
|
free(tmp);
|
|
tmp = NULL;
|
|
}
|
|
|
|
free(url);
|
|
return tmp;
|
|
}
|
|
|
|
static int fetch_and_setup_pack_index(struct packed_git **packs_head,
|
|
unsigned char *sha1, const char *base_url)
|
|
{
|
|
struct packed_git *new_pack;
|
|
char *tmp_idx = NULL;
|
|
int ret;
|
|
|
|
if (has_pack_index(sha1)) {
|
|
new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
|
|
if (!new_pack)
|
|
return -1; /* parse_pack_index() already issued error message */
|
|
goto add_pack;
|
|
}
|
|
|
|
tmp_idx = fetch_pack_index(sha1, base_url);
|
|
if (!tmp_idx)
|
|
return -1;
|
|
|
|
new_pack = parse_pack_index(sha1, tmp_idx);
|
|
if (!new_pack) {
|
|
unlink(tmp_idx);
|
|
free(tmp_idx);
|
|
|
|
return -1; /* parse_pack_index() already issued error message */
|
|
}
|
|
|
|
ret = verify_pack_index(new_pack);
|
|
if (!ret) {
|
|
close_pack_index(new_pack);
|
|
ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
|
|
}
|
|
free(tmp_idx);
|
|
if (ret)
|
|
return -1;
|
|
|
|
add_pack:
|
|
new_pack->next = *packs_head;
|
|
*packs_head = new_pack;
|
|
return 0;
|
|
}
|
|
|
|
int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
|
|
{
|
|
struct http_get_options options = {0};
|
|
int ret = 0, i = 0;
|
|
char *url, *data;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
unsigned char sha1[20];
|
|
|
|
end_url_with_slash(&buf, base_url);
|
|
strbuf_addstr(&buf, "objects/info/packs");
|
|
url = strbuf_detach(&buf, NULL);
|
|
|
|
options.no_cache = 1;
|
|
ret = http_get_strbuf(url, &buf, &options);
|
|
if (ret != HTTP_OK)
|
|
goto cleanup;
|
|
|
|
data = buf.buf;
|
|
while (i < buf.len) {
|
|
switch (data[i]) {
|
|
case 'P':
|
|
i++;
|
|
if (i + 52 <= buf.len &&
|
|
starts_with(data + i, " pack-") &&
|
|
starts_with(data + i + 46, ".pack\n")) {
|
|
get_sha1_hex(data + i + 6, sha1);
|
|
fetch_and_setup_pack_index(packs_head, sha1,
|
|
base_url);
|
|
i += 51;
|
|
break;
|
|
}
|
|
default:
|
|
while (i < buf.len && data[i] != '\n')
|
|
i++;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
cleanup:
|
|
free(url);
|
|
return ret;
|
|
}
|
|
|
|
void release_http_pack_request(struct http_pack_request *preq)
|
|
{
|
|
if (preq->packfile != NULL) {
|
|
fclose(preq->packfile);
|
|
preq->packfile = NULL;
|
|
}
|
|
preq->slot = NULL;
|
|
free(preq->url);
|
|
free(preq);
|
|
}
|
|
|
|
int finish_http_pack_request(struct http_pack_request *preq)
|
|
{
|
|
struct packed_git **lst;
|
|
struct packed_git *p = preq->target;
|
|
char *tmp_idx;
|
|
size_t len;
|
|
struct child_process ip = CHILD_PROCESS_INIT;
|
|
const char *ip_argv[8];
|
|
|
|
close_pack_index(p);
|
|
|
|
fclose(preq->packfile);
|
|
preq->packfile = NULL;
|
|
|
|
lst = preq->lst;
|
|
while (*lst != p)
|
|
lst = &((*lst)->next);
|
|
*lst = (*lst)->next;
|
|
|
|
if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
|
|
die("BUG: pack tmpfile does not end in .pack.temp?");
|
|
tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
|
|
|
|
ip_argv[0] = "index-pack";
|
|
ip_argv[1] = "-o";
|
|
ip_argv[2] = tmp_idx;
|
|
ip_argv[3] = preq->tmpfile;
|
|
ip_argv[4] = NULL;
|
|
|
|
ip.argv = ip_argv;
|
|
ip.git_cmd = 1;
|
|
ip.no_stdin = 1;
|
|
ip.no_stdout = 1;
|
|
|
|
if (run_command(&ip)) {
|
|
unlink(preq->tmpfile);
|
|
unlink(tmp_idx);
|
|
free(tmp_idx);
|
|
return -1;
|
|
}
|
|
|
|
unlink(sha1_pack_index_name(p->sha1));
|
|
|
|
if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
|
|
|| finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
|
|
free(tmp_idx);
|
|
return -1;
|
|
}
|
|
|
|
install_packed_git(p);
|
|
free(tmp_idx);
|
|
return 0;
|
|
}
|
|
|
|
struct http_pack_request *new_http_pack_request(
|
|
struct packed_git *target, const char *base_url)
|
|
{
|
|
off_t prev_posn = 0;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
struct http_pack_request *preq;
|
|
|
|
preq = xcalloc(1, sizeof(*preq));
|
|
preq->target = target;
|
|
|
|
end_url_with_slash(&buf, base_url);
|
|
strbuf_addf(&buf, "objects/pack/pack-%s.pack",
|
|
sha1_to_hex(target->sha1));
|
|
preq->url = strbuf_detach(&buf, NULL);
|
|
|
|
snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
|
|
sha1_pack_name(target->sha1));
|
|
preq->packfile = fopen(preq->tmpfile, "a");
|
|
if (!preq->packfile) {
|
|
error("Unable to open local file %s for pack",
|
|
preq->tmpfile);
|
|
goto abort;
|
|
}
|
|
|
|
preq->slot = get_active_slot();
|
|
curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
|
|
curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
|
|
curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
|
|
curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
|
|
no_pragma_header);
|
|
|
|
/*
|
|
* If there is data present from a previous transfer attempt,
|
|
* resume where it left off
|
|
*/
|
|
prev_posn = ftello(preq->packfile);
|
|
if (prev_posn>0) {
|
|
if (http_is_verbose)
|
|
fprintf(stderr,
|
|
"Resuming fetch of pack %s at byte %"PRIuMAX"\n",
|
|
sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
|
|
http_opt_request_remainder(preq->slot->curl, prev_posn);
|
|
}
|
|
|
|
return preq;
|
|
|
|
abort:
|
|
free(preq->url);
|
|
free(preq);
|
|
return NULL;
|
|
}
|
|
|
|
/* Helpers for fetching objects (loose) */
|
|
static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb,
|
|
void *data)
|
|
{
|
|
unsigned char expn[4096];
|
|
size_t size = eltsize * nmemb;
|
|
int posn = 0;
|
|
struct http_object_request *freq = data;
|
|
struct active_request_slot *slot = freq->slot;
|
|
|
|
if (slot) {
|
|
CURLcode c = curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE,
|
|
&slot->http_code);
|
|
if (c != CURLE_OK)
|
|
die("BUG: curl_easy_getinfo for HTTP code failed: %s",
|
|
curl_easy_strerror(c));
|
|
if (slot->http_code >= 400)
|
|
return size;
|
|
}
|
|
|
|
do {
|
|
ssize_t retval = xwrite(freq->localfile,
|
|
(char *) ptr + posn, size - posn);
|
|
if (retval < 0)
|
|
return posn;
|
|
posn += retval;
|
|
} while (posn < size);
|
|
|
|
freq->stream.avail_in = size;
|
|
freq->stream.next_in = (void *)ptr;
|
|
do {
|
|
freq->stream.next_out = expn;
|
|
freq->stream.avail_out = sizeof(expn);
|
|
freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
|
|
git_SHA1_Update(&freq->c, expn,
|
|
sizeof(expn) - freq->stream.avail_out);
|
|
} while (freq->stream.avail_in && freq->zret == Z_OK);
|
|
return size;
|
|
}
|
|
|
|
struct http_object_request *new_http_object_request(const char *base_url,
|
|
unsigned char *sha1)
|
|
{
|
|
char *hex = sha1_to_hex(sha1);
|
|
const char *filename;
|
|
char prevfile[PATH_MAX];
|
|
int prevlocal;
|
|
char prev_buf[PREV_BUF_SIZE];
|
|
ssize_t prev_read = 0;
|
|
off_t prev_posn = 0;
|
|
struct http_object_request *freq;
|
|
|
|
freq = xcalloc(1, sizeof(*freq));
|
|
hashcpy(freq->sha1, sha1);
|
|
freq->localfile = -1;
|
|
|
|
filename = sha1_file_name(sha1);
|
|
snprintf(freq->tmpfile, sizeof(freq->tmpfile),
|
|
"%s.temp", filename);
|
|
|
|
snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
|
|
unlink_or_warn(prevfile);
|
|
rename(freq->tmpfile, prevfile);
|
|
unlink_or_warn(freq->tmpfile);
|
|
|
|
if (freq->localfile != -1)
|
|
error("fd leakage in start: %d", freq->localfile);
|
|
freq->localfile = open(freq->tmpfile,
|
|
O_WRONLY | O_CREAT | O_EXCL, 0666);
|
|
/*
|
|
* This could have failed due to the "lazy directory creation";
|
|
* try to mkdir the last path component.
|
|
*/
|
|
if (freq->localfile < 0 && errno == ENOENT) {
|
|
char *dir = strrchr(freq->tmpfile, '/');
|
|
if (dir) {
|
|
*dir = 0;
|
|
mkdir(freq->tmpfile, 0777);
|
|
*dir = '/';
|
|
}
|
|
freq->localfile = open(freq->tmpfile,
|
|
O_WRONLY | O_CREAT | O_EXCL, 0666);
|
|
}
|
|
|
|
if (freq->localfile < 0) {
|
|
error_errno("Couldn't create temporary file %s", freq->tmpfile);
|
|
goto abort;
|
|
}
|
|
|
|
git_inflate_init(&freq->stream);
|
|
|
|
git_SHA1_Init(&freq->c);
|
|
|
|
freq->url = get_remote_object_url(base_url, hex, 0);
|
|
|
|
/*
|
|
* If a previous temp file is present, process what was already
|
|
* fetched.
|
|
*/
|
|
prevlocal = open(prevfile, O_RDONLY);
|
|
if (prevlocal != -1) {
|
|
do {
|
|
prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
|
|
if (prev_read>0) {
|
|
if (fwrite_sha1_file(prev_buf,
|
|
1,
|
|
prev_read,
|
|
freq) == prev_read) {
|
|
prev_posn += prev_read;
|
|
} else {
|
|
prev_read = -1;
|
|
}
|
|
}
|
|
} while (prev_read > 0);
|
|
close(prevlocal);
|
|
}
|
|
unlink_or_warn(prevfile);
|
|
|
|
/*
|
|
* Reset inflate/SHA1 if there was an error reading the previous temp
|
|
* file; also rewind to the beginning of the local file.
|
|
*/
|
|
if (prev_read == -1) {
|
|
memset(&freq->stream, 0, sizeof(freq->stream));
|
|
git_inflate_init(&freq->stream);
|
|
git_SHA1_Init(&freq->c);
|
|
if (prev_posn>0) {
|
|
prev_posn = 0;
|
|
lseek(freq->localfile, 0, SEEK_SET);
|
|
if (ftruncate(freq->localfile, 0) < 0) {
|
|
error_errno("Couldn't truncate temporary file %s",
|
|
freq->tmpfile);
|
|
goto abort;
|
|
}
|
|
}
|
|
}
|
|
|
|
freq->slot = get_active_slot();
|
|
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0);
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
|
|
curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
|
|
|
|
/*
|
|
* If we have successfully processed data from a previous fetch
|
|
* attempt, only fetch the data we don't already have.
|
|
*/
|
|
if (prev_posn>0) {
|
|
if (http_is_verbose)
|
|
fprintf(stderr,
|
|
"Resuming fetch of object %s at byte %"PRIuMAX"\n",
|
|
hex, (uintmax_t)prev_posn);
|
|
http_opt_request_remainder(freq->slot->curl, prev_posn);
|
|
}
|
|
|
|
return freq;
|
|
|
|
abort:
|
|
free(freq->url);
|
|
free(freq);
|
|
return NULL;
|
|
}
|
|
|
|
void process_http_object_request(struct http_object_request *freq)
|
|
{
|
|
if (freq->slot == NULL)
|
|
return;
|
|
freq->curl_result = freq->slot->curl_result;
|
|
freq->http_code = freq->slot->http_code;
|
|
freq->slot = NULL;
|
|
}
|
|
|
|
int finish_http_object_request(struct http_object_request *freq)
|
|
{
|
|
struct stat st;
|
|
|
|
close(freq->localfile);
|
|
freq->localfile = -1;
|
|
|
|
process_http_object_request(freq);
|
|
|
|
if (freq->http_code == 416) {
|
|
warning("requested range invalid; we may already have all the data.");
|
|
} else if (freq->curl_result != CURLE_OK) {
|
|
if (stat(freq->tmpfile, &st) == 0)
|
|
if (st.st_size == 0)
|
|
unlink_or_warn(freq->tmpfile);
|
|
return -1;
|
|
}
|
|
|
|
git_inflate_end(&freq->stream);
|
|
git_SHA1_Final(freq->real_sha1, &freq->c);
|
|
if (freq->zret != Z_STREAM_END) {
|
|
unlink_or_warn(freq->tmpfile);
|
|
return -1;
|
|
}
|
|
if (hashcmp(freq->sha1, freq->real_sha1)) {
|
|
unlink_or_warn(freq->tmpfile);
|
|
return -1;
|
|
}
|
|
freq->rename =
|
|
finalize_object_file(freq->tmpfile, sha1_file_name(freq->sha1));
|
|
|
|
return freq->rename;
|
|
}
|
|
|
|
void abort_http_object_request(struct http_object_request *freq)
|
|
{
|
|
unlink_or_warn(freq->tmpfile);
|
|
|
|
release_http_object_request(freq);
|
|
}
|
|
|
|
void release_http_object_request(struct http_object_request *freq)
|
|
{
|
|
if (freq->localfile != -1) {
|
|
close(freq->localfile);
|
|
freq->localfile = -1;
|
|
}
|
|
if (freq->url != NULL) {
|
|
free(freq->url);
|
|
freq->url = NULL;
|
|
}
|
|
if (freq->slot != NULL) {
|
|
freq->slot->callback_func = NULL;
|
|
freq->slot->callback_data = NULL;
|
|
release_active_slot(freq->slot);
|
|
freq->slot = NULL;
|
|
}
|
|
}
|