2036 строки
64 KiB
C
2036 строки
64 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id$
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***************************************************************************/
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#include "setup.h"
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#ifndef CURL_DISABLE_HTTP
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/* -- WIN32 approved -- */
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <ctype.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include <errno.h>
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#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
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#include <time.h>
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#include <io.h>
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#else
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <sys/time.h>
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#ifdef HAVE_TIME_H
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#ifdef TIME_WITH_SYS_TIME
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#include <time.h>
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#endif
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <netdb.h>
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#include <sys/ioctl.h>
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#include <signal.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#endif
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#include "urldata.h"
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#include <curl/curl.h>
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#include "transfer.h"
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#include "sendf.h"
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#include "formdata.h"
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#include "progress.h"
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#include "base64.h"
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#include "cookie.h"
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#include "strequal.h"
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#include "ssluse.h"
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#include "http_digest.h"
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#include "http_ntlm.h"
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#include "http_negotiate.h"
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#include "url.h"
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#include "share.h"
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#include "hostip.h"
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#include "http.h"
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#include "memory.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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/* The last #include file should be: */
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#include "memdebug.h"
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/*
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* checkheaders() checks the linked list of custom HTTP headers for a
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* particular header (prefix).
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*
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* Returns a pointer to the first matching header or NULL if none matched.
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*/
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static char *checkheaders(struct SessionHandle *data, const char *thisheader)
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{
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struct curl_slist *head;
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size_t thislen = strlen(thisheader);
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for(head = data->set.headers; head; head=head->next) {
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if(strnequal(head->data, thisheader, thislen))
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return head->data;
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}
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return NULL;
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}
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/*
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* Curl_output_basic() sets up an Authorization: header (or the proxy version)
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* for HTTP Basic authentication.
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*
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* Returns CURLcode.
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*/
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static CURLcode Curl_output_basic(struct connectdata *conn, bool proxy)
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{
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char *authorization;
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struct SessionHandle *data=conn->data;
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char **userp;
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char *user;
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char *pwd;
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if(proxy) {
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userp = &conn->allocptr.proxyuserpwd;
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user = conn->proxyuser;
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pwd = conn->proxypasswd;
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}
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else {
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userp = &conn->allocptr.userpwd;
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user = conn->user;
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pwd = conn->passwd;
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}
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snprintf(data->state.buffer, sizeof(data->state.buffer), "%s:%s", user, pwd);
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if(Curl_base64_encode(data->state.buffer,
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strlen(data->state.buffer),
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&authorization) > 0) {
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if(*userp)
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free(*userp);
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*userp = aprintf( "%sAuthorization: Basic %s\015\012",
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proxy?"Proxy-":"",
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authorization);
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free(authorization);
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}
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else
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return CURLE_OUT_OF_MEMORY;
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return CURLE_OK;
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}
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/* pickoneauth() selects the most favourable authentication method from the
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* ones available and the ones we want.
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*
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* return TRUE if one was picked
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*/
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static bool pickoneauth(struct auth *pick)
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{
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bool picked;
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/* only deal with authentication we want */
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long avail = pick->avail & pick->want;
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picked = TRUE;
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/* The order of these checks is highly relevant, as this will be the order
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of preference in case of the existance of multiple accepted types. */
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if(avail & CURLAUTH_GSSNEGOTIATE)
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pick->picked = CURLAUTH_GSSNEGOTIATE;
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else if(avail & CURLAUTH_DIGEST)
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pick->picked = CURLAUTH_DIGEST;
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else if(avail & CURLAUTH_NTLM)
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pick->picked = CURLAUTH_NTLM;
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else if(avail & CURLAUTH_BASIC)
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pick->picked = CURLAUTH_BASIC;
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else {
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pick->picked = CURLAUTH_PICKNONE; /* we select to use nothing */
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picked = FALSE;
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}
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pick->avail = CURLAUTH_NONE; /* clear it here */
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return picked;
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}
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/*
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* Curl_http_auth_act() gets called when a all HTTP headers have been received
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* and it checks what authentication methods that are available and decides
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* which one (if any) to use. It will set 'newurl' if an auth metod was
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* picked.
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*/
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CURLcode Curl_http_auth_act(struct connectdata *conn)
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{
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struct SessionHandle *data = conn->data;
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bool pickhost = FALSE;
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bool pickproxy = FALSE;
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CURLcode code = CURLE_OK;
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if(data->state.authproblem)
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return data->set.http_fail_on_error?CURLE_HTTP_RETURNED_ERROR:CURLE_OK;
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if(conn->bits.user_passwd &&
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((conn->keep.httpcode == 401) ||
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(conn->bits.authprobe && conn->keep.httpcode < 300))) {
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pickhost = pickoneauth(&data->state.authhost);
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if(!pickhost)
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data->state.authproblem = TRUE;
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}
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if(conn->bits.proxy_user_passwd &&
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((conn->keep.httpcode == 407) ||
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(conn->bits.authprobe && conn->keep.httpcode < 300))) {
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pickproxy = pickoneauth(&data->state.authproxy);
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if(!pickproxy)
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data->state.authproblem = TRUE;
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}
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if(pickhost || pickproxy)
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conn->newurl = strdup(data->change.url); /* clone URL */
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else if((conn->keep.httpcode < 300) &&
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(!data->state.authhost.done) &&
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conn->bits.authprobe) {
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/* no (known) authentication available,
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authentication is not "done" yet and
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no authentication seems to be required and
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we didn't try HEAD or GET */
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if((data->set.httpreq != HTTPREQ_GET) &&
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(data->set.httpreq != HTTPREQ_HEAD)) {
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conn->newurl = strdup(data->change.url); /* clone URL */
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data->state.authhost.done = TRUE;
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}
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}
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if (Curl_http_should_fail(conn)) {
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failf (data, "The requested URL returned error: %d",
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conn->keep.httpcode);
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code = CURLE_HTTP_RETURNED_ERROR;
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}
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return code;
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}
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/**
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* Curl_http_output_auth() setups the authentication headers for the
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* host/proxy and the correct authentication
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* method. conn->data->state.authdone is set to TRUE when authentication is
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* done.
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*
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* @param conn all information about the current connection
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* @param request pointer to the request keyword
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* @param path pointer to the requested path
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* @param proxytunnel boolean if this is the request setting up a "proxy
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* tunnel"
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*
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* @returns CURLcode
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*/
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static CURLcode
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Curl_http_output_auth(struct connectdata *conn,
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char *request,
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char *path,
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bool proxytunnel) /* TRUE if this is the request setting
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up the proxy tunnel */
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{
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CURLcode result = CURLE_OK;
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struct SessionHandle *data = conn->data;
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char *auth=NULL;
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curlassert(data);
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if((conn->bits.httpproxy && conn->bits.proxy_user_passwd) ||
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conn->bits.user_passwd)
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/* continue please */ ;
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else {
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data->state.authhost.done = TRUE;
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data->state.authproxy.done = TRUE;
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return CURLE_OK; /* no authentication with no user or password */
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}
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if(data->state.authhost.want && !data->state.authhost.picked)
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/* The app has selected one or more methods, but none has been picked
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so far by a server round-trip. Then we set the picked one to the
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want one, and if this is one single bit it'll be used instantly. */
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data->state.authhost.picked = data->state.authhost.want;
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if(data->state.authproxy.want && !data->state.authproxy.picked)
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/* The app has selected one or more methods, but none has been picked so
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far by a proxy round-trip. Then we set the picked one to the want one,
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and if this is one single bit it'll be used instantly. */
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data->state.authproxy.picked = data->state.authproxy.want;
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/* To prevent the user+password to get sent to other than the original
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host due to a location-follow, we do some weirdo checks here */
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if(!data->state.this_is_a_follow ||
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!data->state.first_host ||
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curl_strequal(data->state.first_host, conn->host.name) ||
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data->set.http_disable_hostname_check_before_authentication) {
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/* Send proxy authentication header if needed */
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if (conn->bits.httpproxy &&
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(conn->bits.tunnel_proxy == proxytunnel)) {
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#ifdef USE_SSLEAY
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if(data->state.authproxy.want == CURLAUTH_NTLM) {
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auth=(char *)"NTLM";
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result = Curl_output_ntlm(conn, TRUE);
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if(result)
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return result;
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}
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else
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#endif
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if(data->state.authproxy.want == CURLAUTH_BASIC) {
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/* Basic */
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if(conn->bits.proxy_user_passwd &&
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!checkheaders(data, "Proxy-authorization:")) {
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auth=(char *)"Basic";
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result = Curl_output_basic(conn, TRUE);
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if(result)
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return result;
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}
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data->state.authproxy.done = TRUE;
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}
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else if(data->state.authproxy.want == CURLAUTH_DIGEST) {
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auth=(char *)"Digest";
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result = Curl_output_digest(conn,
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TRUE, /* proxy */
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(unsigned char *)request,
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(unsigned char *)path);
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if(result)
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return result;
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}
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infof(data, "Proxy auth using %s with user '%s'\n",
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auth, conn->proxyuser?conn->proxyuser:"");
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}
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else
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/* we have no proxy so let's pretend we're done authenticating
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with it */
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data->state.authproxy.done = TRUE;
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/* Send web authentication header if needed */
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{
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auth = NULL;
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#ifdef HAVE_GSSAPI
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if((data->state.authhost.want == CURLAUTH_GSSNEGOTIATE) &&
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data->state.negotiate.context &&
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!GSS_ERROR(data->state.negotiate.status)) {
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auth=(char *)"GSS-Negotiate";
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result = Curl_output_negotiate(conn);
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if (result)
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return result;
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data->state.authhost.done = TRUE;
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}
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else
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#endif
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#ifdef USE_SSLEAY
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if(data->state.authhost.picked == CURLAUTH_NTLM) {
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auth=(char *)"NTLM";
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result = Curl_output_ntlm(conn, FALSE);
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if(result)
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return result;
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}
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else
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#endif
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{
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if(data->state.authhost.picked == CURLAUTH_DIGEST) {
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auth=(char *)"Digest";
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result = Curl_output_digest(conn,
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FALSE, /* not a proxy */
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(unsigned char *)request,
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(unsigned char *)path);
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if(result)
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return result;
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}
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else if(data->state.authhost.picked == CURLAUTH_BASIC) {
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if(conn->bits.user_passwd &&
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!checkheaders(data, "Authorization:")) {
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auth=(char *)"Basic";
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result = Curl_output_basic(conn, FALSE);
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if(result)
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return result;
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}
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/* basic is always ready */
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data->state.authhost.done = TRUE;
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}
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}
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if(auth)
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infof(data, "Server auth using %s with user '%s'\n",
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auth, conn->user);
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}
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}
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else
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data->state.authhost.done = TRUE;
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return result;
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}
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/*
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* Curl_http_input_auth() deals with Proxy-Authenticate: and WWW-Authenticate:
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* headers. They are dealt with both in the transfer.c main loop and in the
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* proxy CONNECT loop.
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*/
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CURLcode Curl_http_input_auth(struct connectdata *conn,
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int httpcode,
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char *header) /* the first non-space */
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{
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/*
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* This resource requires authentication
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*/
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struct SessionHandle *data = conn->data;
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long *availp;
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char *start;
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struct auth *authp;
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if (httpcode == 407) {
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start = header+strlen("Proxy-authenticate:");
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availp = &data->info.proxyauthavail;
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authp = &data->state.authproxy;
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}
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else {
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start = header+strlen("WWW-Authenticate:");
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availp = &data->info.httpauthavail;
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authp = &data->state.authhost;
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}
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/* pass all white spaces */
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while(*start && isspace((int)*start))
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start++;
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/*
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* Here we check if we want the specific single authentiction (using ==) and
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* if we do, we initiate usage of it.
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*
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* If the provided authentication is wanted as one out of several accepted
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* types (using &), we OR this authenticaion type to the authavail
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* variable.
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*/
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#ifdef HAVE_GSSAPI
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if (checkprefix("GSS-Negotiate", start) ||
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checkprefix("Negotiate", start)) {
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*availp |= CURLAUTH_GSSNEGOTIATE;
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authp->avail |= CURLAUTH_GSSNEGOTIATE;
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if(authp->picked == CURLAUTH_GSSNEGOTIATE) {
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/* if exactly this is wanted, go */
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int neg = Curl_input_negotiate(conn, start);
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if (neg == 0) {
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conn->newurl = strdup(data->change.url);
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data->state.authproblem = (conn->newurl == NULL);
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}
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else {
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infof(data, "Authentication problem. Ignoring this.\n");
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data->state.authproblem = TRUE;
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}
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}
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}
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else
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#endif
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#ifdef USE_SSLEAY
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/* NTLM support requires the SSL crypto libs */
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if(checkprefix("NTLM", start)) {
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*availp |= CURLAUTH_NTLM;
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authp->avail |= CURLAUTH_NTLM;
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if(authp->picked == CURLAUTH_NTLM) {
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/* NTLM authentication is picked and activated */
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CURLntlm ntlm =
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Curl_input_ntlm(conn, (bool)(httpcode == 407), start);
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if(CURLNTLM_BAD != ntlm)
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data->state.authproblem = FALSE;
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else {
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infof(data, "Authentication problem. Ignoring this.\n");
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data->state.authproblem = TRUE;
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}
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}
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}
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else
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#endif
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if(checkprefix("Digest", start)) {
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CURLdigest dig;
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*availp |= CURLAUTH_DIGEST;
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authp->avail |= CURLAUTH_DIGEST;
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/* We call this function on input Digest headers even if Digest
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* authentication isn't activated yet, as we need to store the
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* incoming data from this header in case we are gonna use Digest. */
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dig = Curl_input_digest(conn, (bool)(httpcode == 407), start);
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if(CURLDIGEST_FINE != dig) {
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infof(data, "Authentication problem. Ignoring this.\n");
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data->state.authproblem = TRUE;
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}
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}
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else if(checkprefix("Basic", start)) {
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*availp |= CURLAUTH_BASIC;
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authp->avail |= CURLAUTH_BASIC;
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if(authp->picked == CURLAUTH_BASIC) {
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/* We asked for Basic authentication but got a 40X back
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anyway, which basicly means our name+password isn't
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valid. */
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authp->avail = CURLAUTH_NONE;
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infof(data, "Authentication problem. Ignoring this.\n");
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data->state.authproblem = TRUE;
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}
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}
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return CURLE_OK;
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}
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/**
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* Curl_http_should_fail() determines whether an HTTP response has gotten us
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* into an error state or not.
|
|
*
|
|
* @param conn all information about the current connection
|
|
*
|
|
* @retval 0 communications should continue
|
|
*
|
|
* @retval 1 communications should not continue
|
|
*/
|
|
int Curl_http_should_fail(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data;
|
|
struct Curl_transfer_keeper *k;
|
|
|
|
curlassert(conn);
|
|
data = conn->data;
|
|
curlassert(data);
|
|
|
|
/*
|
|
** For readability
|
|
*/
|
|
k = &conn->keep;
|
|
|
|
/*
|
|
** If we haven't been asked to fail on error,
|
|
** don't fail.
|
|
*/
|
|
if (!data->set.http_fail_on_error)
|
|
return 0;
|
|
|
|
/*
|
|
** Any code < 400 is never terminal.
|
|
*/
|
|
if (k->httpcode < 400)
|
|
return 0;
|
|
|
|
if (conn->resume_from &&
|
|
(data->set.httpreq==HTTPREQ_GET) &&
|
|
(k->httpcode == 416)) {
|
|
/* "Requested Range Not Satisfiable", just proceed and
|
|
pretend this is no error */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
** Any code >= 400 that's not 401 or 407 is always
|
|
** a terminal error
|
|
*/
|
|
if ((k->httpcode != 401) &&
|
|
(k->httpcode != 407))
|
|
return 1;
|
|
|
|
/*
|
|
** All we have left to deal with is 401 and 407
|
|
*/
|
|
curlassert((k->httpcode == 401) || (k->httpcode == 407));
|
|
|
|
/*
|
|
** Examine the current authentication state to see if this
|
|
** is an error. The idea is for this function to get
|
|
** called after processing all the headers in a response
|
|
** message. So, if we've been to asked to authenticate a
|
|
** particular stage, and we've done it, we're OK. But, if
|
|
** we're already completely authenticated, it's not OK to
|
|
** get another 401 or 407.
|
|
**
|
|
** It is possible for authentication to go stale such that
|
|
** the client needs to reauthenticate. Once that info is
|
|
** available, use it here.
|
|
*/
|
|
#if 0 /* set to 1 when debugging this functionality */
|
|
infof(data,"%s: authstage = %d\n",__FUNCTION__,data->state.authstage);
|
|
infof(data,"%s: authwant = 0x%08x\n",__FUNCTION__,data->state.authwant);
|
|
infof(data,"%s: authavail = 0x%08x\n",__FUNCTION__,data->state.authavail);
|
|
infof(data,"%s: httpcode = %d\n",__FUNCTION__,k->httpcode);
|
|
infof(data,"%s: authdone = %d\n",__FUNCTION__,data->state.authdone);
|
|
infof(data,"%s: newurl = %s\n",__FUNCTION__,conn->newurl ? conn->newurl : "(null)");
|
|
infof(data,"%s: authproblem = %d\n",__FUNCTION__,data->state.authproblem);
|
|
#endif
|
|
|
|
/*
|
|
** Either we're not authenticating, or we're supposed to
|
|
** be authenticating something else. This is an error.
|
|
*/
|
|
if((k->httpcode == 401) && !conn->bits.user_passwd)
|
|
return TRUE;
|
|
if((k->httpcode == 407) && !conn->bits.proxy_user_passwd)
|
|
return TRUE;
|
|
|
|
return data->state.authproblem;
|
|
}
|
|
|
|
/*
|
|
* readmoredata() is a "fread() emulation" to provide POST and/or request
|
|
* data. It is used when a huge POST is to be made and the entire chunk wasn't
|
|
* sent in the first send(). This function will then be called from the
|
|
* transfer.c loop when more data is to be sent to the peer.
|
|
*
|
|
* Returns the amount of bytes it filled the buffer with.
|
|
*/
|
|
static size_t readmoredata(char *buffer,
|
|
size_t size,
|
|
size_t nitems,
|
|
void *userp)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)userp;
|
|
struct HTTP *http = conn->proto.http;
|
|
size_t fullsize = size * nitems;
|
|
|
|
if(0 == http->postsize)
|
|
/* nothing to return */
|
|
return 0;
|
|
|
|
/* make sure that a HTTP request is never sent away chunked! */
|
|
conn->bits.forbidchunk= (http->sending == HTTPSEND_REQUEST)?TRUE:FALSE;
|
|
|
|
if(http->postsize <= (curl_off_t)fullsize) {
|
|
memcpy(buffer, http->postdata, (size_t)http->postsize);
|
|
fullsize = (size_t)http->postsize;
|
|
|
|
if(http->backup.postsize) {
|
|
/* move backup data into focus and continue on that */
|
|
http->postdata = http->backup.postdata;
|
|
http->postsize = http->backup.postsize;
|
|
conn->fread = http->backup.fread;
|
|
conn->fread_in = http->backup.fread_in;
|
|
|
|
http->sending++; /* move one step up */
|
|
|
|
http->backup.postsize=0;
|
|
}
|
|
else
|
|
http->postsize = 0;
|
|
|
|
return fullsize;
|
|
}
|
|
|
|
memcpy(buffer, http->postdata, fullsize);
|
|
http->postdata += fullsize;
|
|
http->postsize -= fullsize;
|
|
|
|
return fullsize;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
/*
|
|
* The add_buffer series of functions are used to build one large memory chunk
|
|
* from repeated function invokes. Used so that the entire HTTP request can
|
|
* be sent in one go.
|
|
*/
|
|
|
|
struct send_buffer {
|
|
char *buffer;
|
|
size_t size_max;
|
|
size_t size_used;
|
|
};
|
|
typedef struct send_buffer send_buffer;
|
|
|
|
static CURLcode
|
|
add_buffer(send_buffer *in, const void *inptr, size_t size);
|
|
|
|
/*
|
|
* add_buffer_init() sets up and returns a fine buffer struct
|
|
*/
|
|
static
|
|
send_buffer *add_buffer_init(void)
|
|
{
|
|
send_buffer *blonk;
|
|
blonk=(send_buffer *)malloc(sizeof(send_buffer));
|
|
if(blonk) {
|
|
memset(blonk, 0, sizeof(send_buffer));
|
|
return blonk;
|
|
}
|
|
return NULL; /* failed, go home */
|
|
}
|
|
|
|
/*
|
|
* add_buffer_send() sends a buffer and frees all associated memory.
|
|
*
|
|
* Returns CURLcode
|
|
*/
|
|
static
|
|
CURLcode add_buffer_send(send_buffer *in,
|
|
struct connectdata *conn,
|
|
long *bytes_written) /* add the number of sent
|
|
bytes to this counter */
|
|
{
|
|
ssize_t amount;
|
|
CURLcode res;
|
|
char *ptr;
|
|
size_t size;
|
|
struct HTTP *http = conn->proto.http;
|
|
size_t sendsize;
|
|
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
|
|
|
|
/* The looping below is required since we use non-blocking sockets, but due
|
|
to the circumstances we will just loop and try again and again etc */
|
|
|
|
ptr = in->buffer;
|
|
size = in->size_used;
|
|
|
|
if(conn->protocol & PROT_HTTPS) {
|
|
/* We never send more than CURL_MAX_WRITE_SIZE bytes in one single chunk
|
|
when we speak HTTPS, as if only a fraction of it is sent now, this data
|
|
needs to fit into the normal read-callback buffer later on and that
|
|
buffer is using this size.
|
|
*/
|
|
|
|
sendsize= (size > CURL_MAX_WRITE_SIZE)?CURL_MAX_WRITE_SIZE:size;
|
|
|
|
/* OpenSSL is very picky and we must send the SAME buffer pointer to the
|
|
library when we attempt to re-send this buffer. Sending the same data
|
|
is not enough, we must use the exact same address. For this reason, we
|
|
must copy the data to the uploadbuffer first, since that is the buffer
|
|
we will be using if this send is retried later.
|
|
*/
|
|
memcpy(conn->data->state.uploadbuffer, ptr, sendsize);
|
|
ptr = conn->data->state.uploadbuffer;
|
|
}
|
|
else
|
|
sendsize = size;
|
|
|
|
res = Curl_write(conn, sockfd, ptr, sendsize, &amount);
|
|
|
|
if(CURLE_OK == res) {
|
|
|
|
if(conn->data->set.verbose)
|
|
/* this data _may_ contain binary stuff */
|
|
Curl_debug(conn->data, CURLINFO_HEADER_OUT, ptr, amount,
|
|
conn->host.dispname);
|
|
|
|
*bytes_written += amount;
|
|
|
|
if((size_t)amount != size) {
|
|
/* The whole request could not be sent in one system call. We must queue
|
|
it up and send it later when we get the chance. We must not loop here
|
|
and wait until it might work again. */
|
|
|
|
size -= amount;
|
|
|
|
ptr = in->buffer + amount;
|
|
|
|
/* backup the currently set pointers */
|
|
http->backup.fread = conn->fread;
|
|
http->backup.fread_in = conn->fread_in;
|
|
http->backup.postdata = http->postdata;
|
|
http->backup.postsize = http->postsize;
|
|
|
|
/* set the new pointers for the request-sending */
|
|
conn->fread = (curl_read_callback)readmoredata;
|
|
conn->fread_in = (void *)conn;
|
|
http->postdata = ptr;
|
|
http->postsize = (curl_off_t)size;
|
|
|
|
http->send_buffer = in;
|
|
http->sending = HTTPSEND_REQUEST;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
http->sending = HTTPSEND_BODY;
|
|
/* the full buffer was sent, clean up and return */
|
|
}
|
|
if(in->buffer)
|
|
free(in->buffer);
|
|
free(in);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
/*
|
|
* add_bufferf() add the formatted input to the buffer.
|
|
*/
|
|
static
|
|
CURLcode add_bufferf(send_buffer *in, const char *fmt, ...)
|
|
{
|
|
char *s;
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
s = vaprintf(fmt, ap); /* this allocs a new string to append */
|
|
va_end(ap);
|
|
|
|
if(s) {
|
|
CURLcode result = add_buffer(in, s, strlen(s));
|
|
free(s);
|
|
if(CURLE_OK == result)
|
|
return CURLE_OK;
|
|
}
|
|
/* If we failed, we cleanup the whole buffer and return error */
|
|
if(in->buffer)
|
|
free(in->buffer);
|
|
free(in);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
/*
|
|
* add_buffer() appends a memory chunk to the existing buffer
|
|
*/
|
|
static
|
|
CURLcode add_buffer(send_buffer *in, const void *inptr, size_t size)
|
|
{
|
|
char *new_rb;
|
|
size_t new_size;
|
|
|
|
if(!in->buffer ||
|
|
((in->size_used + size) > (in->size_max - 1))) {
|
|
new_size = (in->size_used+size)*2;
|
|
if(in->buffer)
|
|
/* we have a buffer, enlarge the existing one */
|
|
new_rb = (char *)realloc(in->buffer, new_size);
|
|
else
|
|
/* create a new buffer */
|
|
new_rb = (char *)malloc(new_size);
|
|
|
|
if(!new_rb)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
in->buffer = new_rb;
|
|
in->size_max = new_size;
|
|
}
|
|
memcpy(&in->buffer[in->size_used], inptr, size);
|
|
|
|
in->size_used += size;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* end of the add_buffer functions */
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* Curl_compareheader()
|
|
*
|
|
* Returns TRUE if 'headerline' contains the 'header' with given 'content'.
|
|
* Pass headers WITH the colon.
|
|
*/
|
|
bool
|
|
Curl_compareheader(char *headerline, /* line to check */
|
|
const char *header, /* header keyword _with_ colon */
|
|
const char *content) /* content string to find */
|
|
{
|
|
/* RFC2616, section 4.2 says: "Each header field consists of a name followed
|
|
* by a colon (":") and the field value. Field names are case-insensitive.
|
|
* The field value MAY be preceded by any amount of LWS, though a single SP
|
|
* is preferred." */
|
|
|
|
size_t hlen = strlen(header);
|
|
size_t clen;
|
|
size_t len;
|
|
char *start;
|
|
char *end;
|
|
|
|
if(!strnequal(headerline, header, hlen))
|
|
return FALSE; /* doesn't start with header */
|
|
|
|
/* pass the header */
|
|
start = &headerline[hlen];
|
|
|
|
/* pass all white spaces */
|
|
while(*start && isspace((int)*start))
|
|
start++;
|
|
|
|
/* find the end of the header line */
|
|
end = strchr(start, '\r'); /* lines end with CRLF */
|
|
if(!end) {
|
|
/* in case there's a non-standard compliant line here */
|
|
end = strchr(start, '\n');
|
|
|
|
if(!end)
|
|
/* hm, there's no line ending here, use the zero byte! */
|
|
end = strchr(start, '\0');
|
|
}
|
|
|
|
len = end-start; /* length of the content part of the input line */
|
|
clen = strlen(content); /* length of the word to find */
|
|
|
|
/* find the content string in the rest of the line */
|
|
for(;len>=clen;len--, start++) {
|
|
if(strnequal(start, content, clen))
|
|
return TRUE; /* match! */
|
|
}
|
|
|
|
return FALSE; /* no match */
|
|
}
|
|
|
|
/*
|
|
* ConnectHTTPProxyTunnel() requires that we're connected to a HTTP proxy. This
|
|
* function will issue the necessary commands to get a seamless tunnel through
|
|
* this proxy. After that, the socket can be used just as a normal socket.
|
|
*/
|
|
|
|
CURLcode Curl_ConnectHTTPProxyTunnel(struct connectdata *conn,
|
|
int sockindex,
|
|
char *hostname,
|
|
int remote_port)
|
|
{
|
|
int subversion=0;
|
|
struct SessionHandle *data=conn->data;
|
|
struct Curl_transfer_keeper *k = &conn->keep;
|
|
CURLcode result;
|
|
int res;
|
|
|
|
size_t nread; /* total size read */
|
|
int perline; /* count bytes per line */
|
|
bool keepon=TRUE;
|
|
ssize_t gotbytes;
|
|
char *ptr;
|
|
long timeout = 3600; /* default timeout in seconds */
|
|
struct timeval interval;
|
|
fd_set rkeepfd;
|
|
fd_set readfd;
|
|
char *line_start;
|
|
char *host_port;
|
|
curl_socket_t tunnelsocket = conn->sock[sockindex];
|
|
|
|
#define SELECT_OK 0
|
|
#define SELECT_ERROR 1
|
|
#define SELECT_TIMEOUT 2
|
|
int error = SELECT_OK;
|
|
|
|
infof(data, "Establish HTTP proxy tunnel to %s:%d\n", hostname, remote_port);
|
|
|
|
do {
|
|
if(conn->newurl) {
|
|
/* This only happens if we've looped here due to authentication reasons,
|
|
and we don't really use the newly cloned URL here then. Just free()
|
|
it. */
|
|
free(conn->newurl);
|
|
conn->newurl = NULL;
|
|
}
|
|
|
|
host_port = aprintf("%s:%d", hostname, remote_port);
|
|
if(!host_port)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Setup the proxy-authorization header, if any */
|
|
result = Curl_http_output_auth(conn, (char *)"CONNECT", host_port, TRUE);
|
|
if(CURLE_OK == result) {
|
|
|
|
/* OK, now send the connect request to the proxy */
|
|
result =
|
|
Curl_sendf(tunnelsocket, conn,
|
|
"CONNECT %s:%d HTTP/1.0\015\012"
|
|
"%s"
|
|
"%s"
|
|
"\r\n",
|
|
hostname, remote_port,
|
|
conn->bits.proxy_user_passwd?
|
|
conn->allocptr.proxyuserpwd:"",
|
|
data->set.useragent?conn->allocptr.uagent:""
|
|
);
|
|
if(result)
|
|
failf(data, "Failed sending CONNECT to proxy");
|
|
}
|
|
free(host_port);
|
|
if(result)
|
|
return result;
|
|
|
|
FD_ZERO (&readfd); /* clear it */
|
|
FD_SET (tunnelsocket, &readfd); /* read socket */
|
|
|
|
/* get this in a backup variable to be able to restore it on each lap in
|
|
the select() loop */
|
|
rkeepfd = readfd;
|
|
|
|
ptr=data->state.buffer;
|
|
line_start = ptr;
|
|
|
|
nread=0;
|
|
perline=0;
|
|
keepon=TRUE;
|
|
|
|
while((nread<BUFSIZE) && (keepon && !error)) {
|
|
readfd = rkeepfd; /* set every lap */
|
|
interval.tv_sec = 1; /* timeout each second and check the timeout */
|
|
interval.tv_usec = 0;
|
|
|
|
if(data->set.timeout) {
|
|
/* if timeout is requested, find out how much remaining time we have */
|
|
timeout = data->set.timeout - /* timeout time */
|
|
Curl_tvdiff(Curl_tvnow(), conn->now)/1000; /* spent time */
|
|
if(timeout <=0 ) {
|
|
failf(data, "Proxy connection aborted due to timeout");
|
|
error = SELECT_TIMEOUT; /* already too little time */
|
|
break;
|
|
}
|
|
}
|
|
|
|
switch (select (tunnelsocket+1, &readfd, NULL, NULL, &interval)) {
|
|
case -1: /* select() error, stop reading */
|
|
error = SELECT_ERROR;
|
|
failf(data, "Proxy CONNECT aborted due to select() error");
|
|
break;
|
|
case 0: /* timeout */
|
|
break;
|
|
default:
|
|
/*
|
|
* This code previously didn't use the kerberos sec_read() code
|
|
* to read, but when we use Curl_read() it may do so. Do confirm
|
|
* that this is still ok and then remove this comment!
|
|
*/
|
|
res= Curl_read(conn, tunnelsocket, ptr, BUFSIZE-nread, &gotbytes);
|
|
if(res< 0)
|
|
/* EWOULDBLOCK */
|
|
continue; /* go loop yourself */
|
|
else if(res)
|
|
keepon = FALSE;
|
|
else if(gotbytes <= 0) {
|
|
keepon = FALSE;
|
|
error = SELECT_ERROR;
|
|
failf(data, "Proxy CONNECT aborted");
|
|
}
|
|
else {
|
|
/*
|
|
* We got a whole chunk of data, which can be anything from one byte
|
|
* to a set of lines and possibly just a piece of the last line.
|
|
*
|
|
* TODO: To make this code work less error-prone, we need to make
|
|
* sure that we read and create full lines before we compare them,
|
|
* as there is really nothing that stops the proxy from delivering
|
|
* the response lines in multiple parts, each part consisting of
|
|
* only a little piece of the line(s). */
|
|
int i;
|
|
|
|
nread += gotbytes;
|
|
for(i = 0; i < gotbytes; ptr++, i++) {
|
|
perline++; /* amount of bytes in this line so far */
|
|
if(*ptr=='\n') {
|
|
char letter;
|
|
int writetype;
|
|
|
|
/* output debug output if that is requested */
|
|
if(data->set.verbose)
|
|
Curl_debug(data, CURLINFO_HEADER_IN, line_start, perline,
|
|
conn->host.dispname);
|
|
|
|
/* send the header to the callback */
|
|
writetype = CLIENTWRITE_HEADER;
|
|
if(data->set.include_header)
|
|
writetype |= CLIENTWRITE_BODY;
|
|
|
|
result = Curl_client_write(data, writetype, line_start, perline);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Newlines are CRLF, so the CR is ignored as the line isn't
|
|
really terminated until the LF comes. Treat a following CR
|
|
as end-of-headers as well.*/
|
|
|
|
if(('\r' == line_start[0]) ||
|
|
('\n' == line_start[0])) {
|
|
/* end of response-headers from the proxy */
|
|
keepon=FALSE;
|
|
break; /* breaks out of for-loop, not switch() */
|
|
}
|
|
|
|
/* keep a backup of the position we are about to blank */
|
|
letter = line_start[perline];
|
|
line_start[perline]=0; /* zero terminate the buffer */
|
|
if((checkprefix("WWW-Authenticate:", line_start) &&
|
|
(401 == k->httpcode)) ||
|
|
(checkprefix("Proxy-authenticate:", line_start) &&
|
|
(407 == k->httpcode))) {
|
|
result = Curl_http_input_auth(conn, k->httpcode, line_start);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else if(2 == sscanf(line_start, "HTTP/1.%d %d",
|
|
&subversion,
|
|
&k->httpcode)) {
|
|
/* store the HTTP code from the proxy */
|
|
data->info.httpproxycode = k->httpcode;
|
|
}
|
|
/* put back the letter we blanked out before */
|
|
line_start[perline]= letter;
|
|
|
|
perline=0; /* line starts over here */
|
|
line_start = ptr+1; /* this skips the zero byte we wrote */
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
} /* switch */
|
|
} /* while there's buffer left and loop is requested */
|
|
|
|
if(error)
|
|
return CURLE_RECV_ERROR;
|
|
|
|
if(data->info.httpproxycode != 200)
|
|
/* Deal with the possibly already received authenticate
|
|
headers. 'newurl' is set to a new URL if we must loop. */
|
|
Curl_http_auth_act(conn);
|
|
|
|
} while(conn->newurl);
|
|
|
|
if(200 != k->httpcode) {
|
|
failf(data, "Received HTTP code %d from proxy after CONNECT",
|
|
k->httpcode);
|
|
return CURLE_RECV_ERROR;
|
|
}
|
|
|
|
/* If a proxy-authorization header was used for the proxy, then we should
|
|
make sure that it isn't accidentally used for the document request
|
|
after we've connected. So let's free and clear it here. */
|
|
Curl_safefree(conn->allocptr.proxyuserpwd);
|
|
conn->allocptr.proxyuserpwd = NULL;
|
|
|
|
data->state.authproxy.done = TRUE;
|
|
|
|
infof (data, "Proxy replied OK to CONNECT request\n");
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Curl_http_connect() performs HTTP stuff to do at connect-time, called from
|
|
* the generic Curl_connect().
|
|
*/
|
|
CURLcode Curl_http_connect(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data;
|
|
CURLcode result;
|
|
|
|
data=conn->data;
|
|
|
|
/* If we are not using a proxy and we want a secure connection, perform SSL
|
|
* initialization & connection now. If using a proxy with https, then we
|
|
* must tell the proxy to CONNECT to the host we want to talk to. Only
|
|
* after the connect has occured, can we start talking SSL
|
|
*/
|
|
|
|
if(conn->bits.tunnel_proxy) {
|
|
|
|
/* either SSL over proxy, or explicitly asked for */
|
|
result = Curl_ConnectHTTPProxyTunnel(conn, FIRSTSOCKET,
|
|
conn->host.name,
|
|
conn->remote_port);
|
|
if(CURLE_OK != result)
|
|
return result;
|
|
}
|
|
|
|
if(conn->protocol & PROT_HTTPS) {
|
|
/* now, perform the SSL initialization for this socket */
|
|
result = Curl_SSLConnect(conn, FIRSTSOCKET);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if(!data->state.this_is_a_follow) {
|
|
/* this is not a followed location, get the original host name */
|
|
if (data->state.first_host)
|
|
/* Free to avoid leaking memory on multiple requests*/
|
|
free(data->state.first_host);
|
|
|
|
data->state.first_host = strdup(conn->host.name);
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Curl_http_done() gets called from Curl_done() after a single HTTP request
|
|
* has been performed.
|
|
*/
|
|
|
|
CURLcode Curl_http_done(struct connectdata *conn,
|
|
CURLcode status)
|
|
{
|
|
struct SessionHandle *data;
|
|
struct HTTP *http;
|
|
(void)status; /* no use for us */
|
|
|
|
data=conn->data;
|
|
http=conn->proto.http;
|
|
|
|
/* set the proper values (possibly modified on POST) */
|
|
conn->fread = data->set.fread; /* restore */
|
|
conn->fread_in = data->set.in; /* restore */
|
|
|
|
if (http == NULL)
|
|
return CURLE_OK;
|
|
|
|
if(http->send_buffer) {
|
|
send_buffer *buff = http->send_buffer;
|
|
|
|
free(buff->buffer);
|
|
free(buff);
|
|
http->send_buffer = NULL; /* cleaer the pointer */
|
|
}
|
|
|
|
if(HTTPREQ_POST_FORM == data->set.httpreq) {
|
|
conn->bytecount = http->readbytecount + http->writebytecount;
|
|
|
|
Curl_formclean(http->sendit); /* Now free that whole lot */
|
|
}
|
|
else if(HTTPREQ_PUT == data->set.httpreq)
|
|
conn->bytecount = http->readbytecount + http->writebytecount;
|
|
|
|
if(!conn->bits.retry &&
|
|
((http->readbytecount +
|
|
conn->headerbytecount -
|
|
conn->deductheadercount)) <= 0) {
|
|
/* If this connection isn't simply closed to be retried, AND nothing was
|
|
read from the HTTP server (that counts), this can't be right so we
|
|
return an error here */
|
|
failf(data, "Empty reply from server");
|
|
return CURLE_GOT_NOTHING;
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Curl_http() gets called from the generic Curl_do() function when a HTTP
|
|
* request is to be performed. This creates and sends a properly constructed
|
|
* HTTP request.
|
|
*/
|
|
CURLcode Curl_http(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data=conn->data;
|
|
char *buf = data->state.buffer; /* this is a short cut to the buffer */
|
|
CURLcode result=CURLE_OK;
|
|
struct HTTP *http;
|
|
char *ppath = conn->path;
|
|
char *host = conn->host.name;
|
|
const char *te = ""; /* tranfer-encoding */
|
|
char *ptr;
|
|
char *request;
|
|
Curl_HttpReq httpreq = data->set.httpreq;
|
|
char *addcookies = NULL;
|
|
|
|
if(!conn->proto.http) {
|
|
/* Only allocate this struct if we don't already have it! */
|
|
|
|
http = (struct HTTP *)malloc(sizeof(struct HTTP));
|
|
if(!http)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
memset(http, 0, sizeof(struct HTTP));
|
|
conn->proto.http = http;
|
|
}
|
|
else
|
|
http = conn->proto.http;
|
|
|
|
/* We default to persistant connections */
|
|
conn->bits.close = FALSE;
|
|
|
|
if ( (conn->protocol&(PROT_HTTP|PROT_FTP)) &&
|
|
data->set.upload) {
|
|
httpreq = HTTPREQ_PUT;
|
|
}
|
|
|
|
/* Now set the 'request' pointer to the proper request string */
|
|
if(data->set.customrequest)
|
|
request = data->set.customrequest;
|
|
else {
|
|
if(conn->bits.no_body)
|
|
request = (char *)"HEAD";
|
|
else {
|
|
curlassert((httpreq > HTTPREQ_NONE) && (httpreq < HTTPREQ_LAST));
|
|
switch(httpreq) {
|
|
case HTTPREQ_POST:
|
|
case HTTPREQ_POST_FORM:
|
|
request = (char *)"POST";
|
|
break;
|
|
case HTTPREQ_PUT:
|
|
request = (char *)"PUT";
|
|
break;
|
|
default: /* this should never happen */
|
|
case HTTPREQ_GET:
|
|
request = (char *)"GET";
|
|
break;
|
|
case HTTPREQ_HEAD:
|
|
request = (char *)"HEAD";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The User-Agent string might have been allocated in url.c already, because
|
|
it might have been used in the proxy connect, but if we have got a header
|
|
with the user-agent string specified, we erase the previously made string
|
|
here. */
|
|
if(checkheaders(data, "User-Agent:") && conn->allocptr.uagent) {
|
|
free(conn->allocptr.uagent);
|
|
conn->allocptr.uagent=NULL;
|
|
}
|
|
|
|
/* setup the authentication headers */
|
|
result = Curl_http_output_auth(conn, request, ppath, FALSE);
|
|
if(result)
|
|
return result;
|
|
|
|
if((!data->state.authhost.done || !data->state.authproxy.done ) &&
|
|
(httpreq != HTTPREQ_GET)) {
|
|
/* Until we are authenticated, we switch over to HEAD. Unless its a GET
|
|
we want to do. The explanation for this is rather long and boring, but
|
|
the point is that it can't be done otherwise without risking having to
|
|
send the POST or PUT data multiple times. */
|
|
httpreq = HTTPREQ_HEAD;
|
|
request = (char *)"HEAD";
|
|
conn->bits.no_body = TRUE;
|
|
conn->bits.authprobe = TRUE; /* this is a request done to probe for
|
|
authentication methods */
|
|
}
|
|
else
|
|
conn->bits.authprobe = FALSE;
|
|
|
|
Curl_safefree(conn->allocptr.ref);
|
|
if(data->change.referer && !checkheaders(data, "Referer:"))
|
|
conn->allocptr.ref = aprintf("Referer: %s\015\012", data->change.referer);
|
|
else
|
|
conn->allocptr.ref = NULL;
|
|
|
|
if(data->set.cookie && !checkheaders(data, "Cookie:"))
|
|
addcookies = data->set.cookie;
|
|
|
|
if(!checkheaders(data, "Accept-Encoding:") &&
|
|
data->set.encoding) {
|
|
Curl_safefree(conn->allocptr.accept_encoding);
|
|
conn->allocptr.accept_encoding =
|
|
aprintf("Accept-Encoding: %s\015\012", data->set.encoding);
|
|
if(!conn->allocptr.accept_encoding)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if(!conn->bits.upload_chunky && (httpreq != HTTPREQ_GET)) {
|
|
/* not a chunky transfer yet, but data is to be sent */
|
|
ptr = checkheaders(data, "Transfer-Encoding:");
|
|
if(ptr) {
|
|
/* Some kind of TE is requested, check if 'chunked' is chosen */
|
|
conn->bits.upload_chunky =
|
|
Curl_compareheader(ptr, "Transfer-Encoding:", "chunked");
|
|
te = "";
|
|
}
|
|
}
|
|
else if(conn->bits.upload_chunky) {
|
|
/* RFC2616 section 4.4:
|
|
Messages MUST NOT include both a Content-Length header field and a
|
|
non-identity transfer-coding. If the message does include a non-
|
|
identity transfer-coding, the Content-Length MUST be ignored. */
|
|
|
|
if(!checkheaders(data, "Transfer-Encoding:")) {
|
|
te = "Transfer-Encoding: chunked\r\n";
|
|
}
|
|
else {
|
|
te = "";
|
|
conn->bits.upload_chunky = FALSE; /* transfer-encoding was disabled,
|
|
so don't chunkify this! */
|
|
}
|
|
}
|
|
|
|
Curl_safefree(conn->allocptr.host);
|
|
|
|
ptr = checkheaders(data, "Host:");
|
|
if(ptr && (!data->state.this_is_a_follow ||
|
|
curl_strequal(data->state.first_host, conn->host.name))) {
|
|
/* If we have a given custom Host: header, we extract the host name in
|
|
order to possibly use it for cookie reasons later on. We only allow the
|
|
custom Host: header if this is NOT a redirect, as setting Host: in the
|
|
redirected request is being out on thin ice. Except if the host name
|
|
is the same as the first one! */
|
|
char *start = ptr+strlen("Host:");
|
|
while(*start && isspace((int)*start ))
|
|
start++;
|
|
ptr = start; /* start host-scanning here */
|
|
|
|
/* scan through the string to find the end (space or colon) */
|
|
while(*ptr && !isspace((int)*ptr) && !(':'==*ptr))
|
|
ptr++;
|
|
|
|
if(ptr != start) {
|
|
size_t len=ptr-start;
|
|
Curl_safefree(conn->allocptr.cookiehost);
|
|
conn->allocptr.cookiehost = malloc(len+1);
|
|
if(!conn->allocptr.cookiehost)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
memcpy(conn->allocptr.cookiehost, start, len);
|
|
conn->allocptr.cookiehost[len]=0;
|
|
}
|
|
|
|
conn->allocptr.host = NULL;
|
|
}
|
|
else {
|
|
/* When building Host: headers, we must put the host name within
|
|
[brackets] if the host name is a plain IPv6-address. RFC2732-style. */
|
|
|
|
if(((conn->protocol&PROT_HTTPS) && (conn->remote_port == PORT_HTTPS)) ||
|
|
(!(conn->protocol&PROT_HTTPS) && (conn->remote_port == PORT_HTTP)) )
|
|
/* If (HTTPS on port 443) OR (non-HTTPS on port 80) then don't include
|
|
the port number in the host string */
|
|
conn->allocptr.host = aprintf("Host: %s%s%s\r\n",
|
|
conn->bits.ipv6_ip?"[":"",
|
|
host,
|
|
conn->bits.ipv6_ip?"]":"");
|
|
else
|
|
conn->allocptr.host = aprintf("Host: %s%s%s:%d\r\n",
|
|
conn->bits.ipv6_ip?"[":"",
|
|
host,
|
|
conn->bits.ipv6_ip?"]":"",
|
|
conn->remote_port);
|
|
|
|
if(!conn->allocptr.host)
|
|
/* without Host: we can't make a nice request */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if (conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
|
|
/* Using a proxy but does not tunnel through it */
|
|
|
|
/* The path sent to the proxy is in fact the entire URL. But if the remote
|
|
host is a IDN-name, we must make sure that the request we produce only
|
|
uses the encoded host name! */
|
|
if(conn->host.dispname != conn->host.name) {
|
|
char *url = data->change.url;
|
|
char *ptr = strstr(url, conn->host.dispname);
|
|
if(ptr) {
|
|
/* This is where the display name starts in the URL, now replace this
|
|
part with the encoded name. TODO: This method of replacing the host
|
|
name is rather crude as I believe there's a slight risk that the
|
|
user has entered a user name or password that contain the host name
|
|
string. */
|
|
size_t currlen = strlen(conn->host.dispname);
|
|
size_t newlen = strlen(conn->host.name);
|
|
size_t urllen = strlen(url);
|
|
|
|
char *newurl;
|
|
|
|
newurl = malloc(urllen + newlen - currlen + 1);
|
|
if(newurl) {
|
|
/* copy the part before the host name */
|
|
memcpy(newurl, url, ptr - url);
|
|
/* append the new host name instead of the old */
|
|
memcpy(newurl + (ptr - url), conn->host.name, newlen);
|
|
/* append the piece after the host name */
|
|
memcpy(newurl + newlen + (ptr - url),
|
|
ptr + currlen, /* copy the trailing zero byte too */
|
|
urllen - (ptr-url) - currlen + 1);
|
|
if(data->change.url_alloc)
|
|
free(data->change.url);
|
|
data->change.url = newurl;
|
|
data->change.url_alloc = TRUE;
|
|
}
|
|
else
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
ppath = data->change.url;
|
|
}
|
|
if(HTTPREQ_POST_FORM == httpreq) {
|
|
/* we must build the whole darned post sequence first, so that we have
|
|
a size of the whole shebang before we start to send it */
|
|
result = Curl_getFormData(&http->sendit, data->set.httppost,
|
|
&http->postsize);
|
|
if(CURLE_OK != result) {
|
|
/* Curl_getFormData() doesn't use failf() */
|
|
failf(data, "failed creating formpost data");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
|
|
if(!checkheaders(data, "Pragma:"))
|
|
http->p_pragma = "Pragma: no-cache\r\n";
|
|
|
|
if(!checkheaders(data, "Accept:"))
|
|
http->p_accept = "Accept: */*\r\n";
|
|
|
|
if(( (HTTPREQ_POST == httpreq) ||
|
|
(HTTPREQ_POST_FORM == httpreq) ||
|
|
(HTTPREQ_PUT == httpreq) ) &&
|
|
conn->resume_from) {
|
|
/**********************************************************************
|
|
* Resuming upload in HTTP means that we PUT or POST and that we have
|
|
* got a resume_from value set. The resume value has already created
|
|
* a Range: header that will be passed along. We need to "fast forward"
|
|
* the file the given number of bytes and decrease the assume upload
|
|
* file size before we continue this venture in the dark lands of HTTP.
|
|
*********************************************************************/
|
|
|
|
if(conn->resume_from < 0 ) {
|
|
/*
|
|
* This is meant to get the size of the present remote-file by itself.
|
|
* We don't support this now. Bail out!
|
|
*/
|
|
conn->resume_from = 0;
|
|
}
|
|
|
|
if(conn->resume_from) {
|
|
/* do we still game? */
|
|
curl_off_t passed=0;
|
|
|
|
/* Now, let's read off the proper amount of bytes from the
|
|
input. If we knew it was a proper file we could've just
|
|
fseek()ed but we only have a stream here */
|
|
do {
|
|
size_t readthisamountnow = (size_t)(conn->resume_from - passed);
|
|
size_t actuallyread;
|
|
|
|
if(readthisamountnow > BUFSIZE)
|
|
readthisamountnow = BUFSIZE;
|
|
|
|
actuallyread =
|
|
data->set.fread(data->state.buffer, 1, (size_t)readthisamountnow,
|
|
data->set.in);
|
|
|
|
passed += actuallyread;
|
|
if(actuallyread != readthisamountnow) {
|
|
failf(data, "Could only read %" FORMAT_OFF_T
|
|
" bytes from the input",
|
|
passed);
|
|
return CURLE_READ_ERROR;
|
|
}
|
|
} while(passed != conn->resume_from); /* loop until done */
|
|
|
|
/* now, decrease the size of the read */
|
|
if(data->set.infilesize>0) {
|
|
data->set.infilesize -= conn->resume_from;
|
|
|
|
if(data->set.infilesize <= 0) {
|
|
failf(data, "File already completely uploaded");
|
|
return CURLE_PARTIAL_FILE;
|
|
}
|
|
}
|
|
/* we've passed, proceed as normal */
|
|
}
|
|
}
|
|
if(conn->bits.use_range) {
|
|
/*
|
|
* A range is selected. We use different headers whether we're downloading
|
|
* or uploading and we always let customized headers override our internal
|
|
* ones if any such are specified.
|
|
*/
|
|
if((httpreq == HTTPREQ_GET) &&
|
|
!checkheaders(data, "Range:")) {
|
|
/* if a line like this was already allocated, free the previous one */
|
|
if(conn->allocptr.rangeline)
|
|
free(conn->allocptr.rangeline);
|
|
conn->allocptr.rangeline = aprintf("Range: bytes=%s\r\n", conn->range);
|
|
}
|
|
else if((httpreq != HTTPREQ_GET) &&
|
|
!checkheaders(data, "Content-Range:")) {
|
|
|
|
if(conn->resume_from) {
|
|
/* This is because "resume" was selected */
|
|
curl_off_t total_expected_size=
|
|
conn->resume_from + data->set.infilesize;
|
|
conn->allocptr.rangeline =
|
|
aprintf("Content-Range: bytes %s%" FORMAT_OFF_T
|
|
"/%" FORMAT_OFF_T "\r\n",
|
|
conn->range, total_expected_size-1,
|
|
total_expected_size);
|
|
}
|
|
else {
|
|
/* Range was selected and then we just pass the incoming range and
|
|
append total size */
|
|
conn->allocptr.rangeline =
|
|
aprintf("Content-Range: bytes %s/%" FORMAT_OFF_T "\r\n",
|
|
conn->range, data->set.infilesize);
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
/* Use 1.1 unless the use specificly asked for 1.0 */
|
|
const char *httpstring=
|
|
data->set.httpversion==CURL_HTTP_VERSION_1_0?"1.0":"1.1";
|
|
|
|
send_buffer *req_buffer;
|
|
struct curl_slist *headers=data->set.headers;
|
|
curl_off_t postsize; /* off_t type to be able to hold a large file size */
|
|
|
|
/* initialize a dynamic send-buffer */
|
|
req_buffer = add_buffer_init();
|
|
|
|
if(!req_buffer)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* add the main request stuff */
|
|
result =
|
|
add_bufferf(req_buffer,
|
|
"%s " /* GET/HEAD/POST/PUT */
|
|
"%s HTTP/%s\r\n" /* path + HTTP version */
|
|
"%s" /* proxyuserpwd */
|
|
"%s" /* userpwd */
|
|
"%s" /* range */
|
|
"%s" /* user agent */
|
|
"%s" /* host */
|
|
"%s" /* pragma */
|
|
"%s" /* accept */
|
|
"%s" /* accept-encoding */
|
|
"%s" /* referer */
|
|
"%s",/* transfer-encoding */
|
|
|
|
request,
|
|
ppath,
|
|
httpstring,
|
|
conn->allocptr.proxyuserpwd?
|
|
conn->allocptr.proxyuserpwd:"",
|
|
conn->allocptr.userpwd?conn->allocptr.userpwd:"",
|
|
(conn->bits.use_range && conn->allocptr.rangeline)?
|
|
conn->allocptr.rangeline:"",
|
|
(data->set.useragent && *data->set.useragent && conn->allocptr.uagent)?
|
|
conn->allocptr.uagent:"",
|
|
(conn->allocptr.host?conn->allocptr.host:""), /* Host: host */
|
|
http->p_pragma?http->p_pragma:"",
|
|
http->p_accept?http->p_accept:"",
|
|
(data->set.encoding && *data->set.encoding && conn->allocptr.accept_encoding)?
|
|
conn->allocptr.accept_encoding:"",
|
|
(data->change.referer && conn->allocptr.ref)?conn->allocptr.ref:"" /* Referer: <data> */,
|
|
te
|
|
);
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
if(data->cookies || addcookies) {
|
|
struct Cookie *co=NULL; /* no cookies from start */
|
|
int count=0;
|
|
|
|
if(data->cookies) {
|
|
Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
|
|
co = Curl_cookie_getlist(data->cookies,
|
|
conn->allocptr.cookiehost?
|
|
conn->allocptr.cookiehost:host, conn->path,
|
|
(bool)(conn->protocol&PROT_HTTPS?TRUE:FALSE));
|
|
Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
|
|
}
|
|
if(co) {
|
|
struct Cookie *store=co;
|
|
/* now loop through all cookies that matched */
|
|
while(co) {
|
|
if(co->value) {
|
|
if(0 == count) {
|
|
result = add_bufferf(req_buffer, "Cookie: ");
|
|
if(result)
|
|
break;
|
|
}
|
|
result = add_bufferf(req_buffer,
|
|
"%s%s=%s", count?"; ":"",
|
|
co->name, co->value);
|
|
if(result)
|
|
break;
|
|
count++;
|
|
}
|
|
co = co->next; /* next cookie please */
|
|
}
|
|
Curl_cookie_freelist(store); /* free the cookie list */
|
|
}
|
|
if(addcookies && (CURLE_OK == result)) {
|
|
if(!count)
|
|
result = add_bufferf(req_buffer, "Cookie: ");
|
|
if(CURLE_OK == result) {
|
|
result = add_bufferf(req_buffer, "%s%s",
|
|
count?"; ":"",
|
|
addcookies);
|
|
count++;
|
|
}
|
|
}
|
|
if(count && (CURLE_OK == result))
|
|
result = add_buffer(req_buffer, "\r\n", 2);
|
|
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if(data->set.timecondition) {
|
|
struct tm *thistime;
|
|
|
|
/* Phil Karn (Fri, 13 Apr 2001) pointed out that the If-Modified-Since
|
|
* header family should have their times set in GMT as RFC2616 defines:
|
|
* "All HTTP date/time stamps MUST be represented in Greenwich Mean Time
|
|
* (GMT), without exception. For the purposes of HTTP, GMT is exactly
|
|
* equal to UTC (Coordinated Universal Time)." (see page 20 of RFC2616).
|
|
*/
|
|
|
|
#ifdef HAVE_GMTIME_R
|
|
/* thread-safe version */
|
|
struct tm keeptime;
|
|
thistime = (struct tm *)gmtime_r(&data->set.timevalue, &keeptime);
|
|
#else
|
|
thistime = gmtime(&data->set.timevalue);
|
|
#endif
|
|
|
|
#ifdef HAVE_STRFTIME
|
|
/* format: "Tue, 15 Nov 1994 12:45:26 GMT" */
|
|
strftime(buf, BUFSIZE-1, "%a, %d %b %Y %H:%M:%S GMT", thistime);
|
|
#else
|
|
/* TODO: Right, we *could* write a replacement here */
|
|
strcpy(buf, "no strftime() support");
|
|
#endif
|
|
switch(data->set.timecondition) {
|
|
case CURL_TIMECOND_IFMODSINCE:
|
|
default:
|
|
result = add_bufferf(req_buffer,
|
|
"If-Modified-Since: %s\r\n", buf);
|
|
break;
|
|
case CURL_TIMECOND_IFUNMODSINCE:
|
|
result = add_bufferf(req_buffer,
|
|
"If-Unmodified-Since: %s\r\n", buf);
|
|
break;
|
|
case CURL_TIMECOND_LASTMOD:
|
|
result = add_bufferf(req_buffer,
|
|
"Last-Modified: %s\r\n", buf);
|
|
break;
|
|
}
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
while(headers) {
|
|
ptr = strchr(headers->data, ':');
|
|
if(ptr) {
|
|
/* we require a colon for this to be a true header */
|
|
|
|
ptr++; /* pass the colon */
|
|
while(*ptr && isspace((int)*ptr))
|
|
ptr++;
|
|
|
|
if(*ptr) {
|
|
/* only send this if the contents was non-blank */
|
|
|
|
if(conn->allocptr.host &&
|
|
/* a Host: header was sent already, don't pass on any custom Host:
|
|
header as that will produce *two* in the same request! */
|
|
curl_strnequal("Host:", headers->data, 5))
|
|
;
|
|
else {
|
|
|
|
result = add_bufferf(req_buffer, "%s\r\n", headers->data);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
headers = headers->next;
|
|
}
|
|
|
|
http->postdata = NULL; /* nothing to post at this point */
|
|
Curl_pgrsSetUploadSize(data, 0); /* upload size is 0 atm */
|
|
|
|
/* If 'authdone' is FALSE, we must not set the write socket index to the
|
|
Curl_transfer() call below, as we're not ready to actually upload any
|
|
data yet. */
|
|
|
|
switch(httpreq) {
|
|
|
|
case HTTPREQ_POST_FORM:
|
|
if(Curl_FormInit(&http->form, http->sendit)) {
|
|
failf(data, "Internal HTTP POST error!");
|
|
return CURLE_HTTP_POST_ERROR;
|
|
}
|
|
|
|
/* set the read function to read from the generated form data */
|
|
conn->fread = (curl_read_callback)Curl_FormReader;
|
|
conn->fread_in = &http->form;
|
|
|
|
http->sending = HTTPSEND_BODY;
|
|
|
|
if(!conn->bits.upload_chunky) {
|
|
/* only add Content-Length if not uploading chunked */
|
|
result = add_bufferf(req_buffer,
|
|
"Content-Length: %" FORMAT_OFF_T "\r\n",
|
|
http->postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if((data->set.httpversion != CURL_HTTP_VERSION_1_0) &&
|
|
!checkheaders(data, "Expect:")) {
|
|
/* if not doing HTTP 1.0 or disabled explicitly, we add a Expect:
|
|
100-continue to the headers which actually speeds up post
|
|
operations (as there is one packet coming back from the web
|
|
server) */
|
|
result = add_bufferf(req_buffer,
|
|
"Expect: 100-continue\r\n");
|
|
if(result)
|
|
return result;
|
|
data->set.expect100header = TRUE;
|
|
}
|
|
|
|
if(!checkheaders(data, "Content-Type:")) {
|
|
/* Get Content-Type: line from Curl_formpostheader.
|
|
|
|
The Content-Type header line also contains the MIME boundary
|
|
string etc why disabling this header is likely to not make things
|
|
work, but we support disabling it anyway.
|
|
*/
|
|
char *contentType;
|
|
size_t linelength=0;
|
|
contentType = Curl_formpostheader((void *)&http->form,
|
|
&linelength);
|
|
if(!contentType) {
|
|
failf(data, "Could not get Content-Type header line!");
|
|
return CURLE_HTTP_POST_ERROR;
|
|
}
|
|
result = add_buffer(req_buffer, contentType, linelength);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
/* make the request end in a true CRLF */
|
|
result = add_buffer(req_buffer, "\r\n", 2);
|
|
if(result)
|
|
return result;
|
|
|
|
/* set upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, http->postsize);
|
|
|
|
/* fire away the whole request to the server */
|
|
result = add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size);
|
|
if(result)
|
|
failf(data, "Failed sending POST request");
|
|
else
|
|
/* setup variables for the upcoming transfer */
|
|
result = Curl_Transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount,
|
|
FIRSTSOCKET,
|
|
&http->writebytecount);
|
|
if(result) {
|
|
Curl_formclean(http->sendit); /* free that whole lot */
|
|
return result;
|
|
}
|
|
break;
|
|
|
|
case HTTPREQ_PUT: /* Let's PUT the data to the server! */
|
|
|
|
if((data->set.infilesize>0) && !conn->bits.upload_chunky) {
|
|
/* only add Content-Length if not uploading chunked */
|
|
result = add_bufferf(req_buffer,
|
|
"Content-Length: %" FORMAT_OFF_T "\r\n", /* size */
|
|
data->set.infilesize );
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if((data->set.httpversion != CURL_HTTP_VERSION_1_0) &&
|
|
!checkheaders(data, "Expect:")) {
|
|
/* if not HTTP 1.0 or disabled explicitly, we add a Expect:
|
|
100-continue to the headers which actually speeds up post
|
|
operations (as there is one packet coming back from the web
|
|
server) */
|
|
result = add_bufferf(req_buffer,
|
|
"Expect: 100-continue\r\n");
|
|
if(result)
|
|
return result;
|
|
data->set.expect100header = TRUE;
|
|
}
|
|
|
|
result = add_buffer(req_buffer, "\r\n", 2); /* end of headers */
|
|
if(result)
|
|
return result;
|
|
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, data->set.infilesize);
|
|
|
|
/* this sends the buffer and frees all the buffer resources */
|
|
result = add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size);
|
|
if(result)
|
|
failf(data, "Failed sending POST request");
|
|
else
|
|
/* prepare for transfer */
|
|
result = Curl_Transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount,
|
|
FIRSTSOCKET,
|
|
&http->writebytecount);
|
|
if(result)
|
|
return result;
|
|
break;
|
|
|
|
case HTTPREQ_POST:
|
|
/* this is the simple POST, using x-www-form-urlencoded style */
|
|
|
|
/* store the size of the postfields */
|
|
postsize = data->set.postfieldsize?
|
|
data->set.postfieldsize:
|
|
(data->set.postfields?(curl_off_t)strlen(data->set.postfields):0);
|
|
|
|
if(!conn->bits.upload_chunky) {
|
|
/* We only set Content-Length and allow a custom Content-Length if
|
|
we don't upload data chunked, as RFC2616 forbids us to set both
|
|
kinds of headers (Transfer-Encoding: chunked and Content-Length) */
|
|
|
|
if(!checkheaders(data, "Content-Length:")) {
|
|
/* we allow replacing this header, although it isn't very wise to
|
|
actually set your own */
|
|
result = add_bufferf(req_buffer,
|
|
"Content-Length: %" FORMAT_OFF_T"\r\n",
|
|
postsize);
|
|
if(result)
|
|
return result;
|
|
}
|
|
}
|
|
|
|
if(!checkheaders(data, "Content-Type:")) {
|
|
result = add_bufferf(req_buffer,
|
|
"Content-Type: application/x-www-form-urlencoded\r\n");
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
if(data->set.postfields) {
|
|
|
|
if((data->state.authhost.done || data->state.authproxy.done )
|
|
&& (postsize < MAX_INITIAL_POST_SIZE)) {
|
|
/* If we're not done with the authentication phase, we don't expect
|
|
to actually send off any data yet. Hence, we delay the sending of
|
|
the body until we receive that friendly 100-continue response */
|
|
|
|
/* The post data is less than MAX_INITIAL_PORT_SIZE, then append it
|
|
to the header. This limit is no magic limit but only set to
|
|
prevent really huge POSTs to get the data duplicated with
|
|
malloc() and family. */
|
|
|
|
result = add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
if(result)
|
|
return result;
|
|
|
|
if(!conn->bits.upload_chunky) {
|
|
/* We're not sending it 'chunked', append it to the request
|
|
already now to reduce the number if send() calls */
|
|
result = add_buffer(req_buffer, data->set.postfields,
|
|
(size_t)postsize);
|
|
}
|
|
else {
|
|
/* Append the POST data chunky-style */
|
|
result = add_bufferf(req_buffer, "%x\r\n", (int)postsize);
|
|
if(CURLE_OK == result)
|
|
result = add_buffer(req_buffer, data->set.postfields,
|
|
(size_t)postsize);
|
|
if(CURLE_OK == result)
|
|
result = add_buffer(req_buffer,
|
|
"\r\n0\r\n\r\n", 7); /* end of a chunked
|
|
transfer stream */
|
|
}
|
|
if(result)
|
|
return result;
|
|
}
|
|
else {
|
|
/* A huge POST coming up, do data separate from the request */
|
|
http->postsize = postsize;
|
|
http->postdata = data->set.postfields;
|
|
|
|
http->sending = HTTPSEND_BODY;
|
|
|
|
conn->fread = (curl_read_callback)readmoredata;
|
|
conn->fread_in = (void *)conn;
|
|
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, http->postsize);
|
|
|
|
if((data->set.httpversion != CURL_HTTP_VERSION_1_0) &&
|
|
!checkheaders(data, "Expect:")) {
|
|
/* if not HTTP 1.0 or disabled explicitly, we add a Expect:
|
|
100-continue to the headers which actually speeds up post
|
|
operations (as there is one packet coming back from the web
|
|
server) */
|
|
add_bufferf(req_buffer,
|
|
"Expect: 100-continue\r\n");
|
|
data->set.expect100header = TRUE;
|
|
}
|
|
|
|
add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
}
|
|
}
|
|
else {
|
|
add_buffer(req_buffer, "\r\n", 2); /* end of headers! */
|
|
|
|
/* set the upload size to the progress meter */
|
|
Curl_pgrsSetUploadSize(data, data->set.infilesize);
|
|
|
|
/* set the pointer to mark that we will send the post body using
|
|
the read callback */
|
|
http->postdata = (char *)&http->postdata;
|
|
}
|
|
/* issue the request */
|
|
result = add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size);
|
|
|
|
if(result)
|
|
failf(data, "Failed sending HTTP POST request");
|
|
else
|
|
result =
|
|
Curl_Transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount,
|
|
http->postdata?FIRSTSOCKET:-1,
|
|
http->postdata?&http->writebytecount:NULL);
|
|
break;
|
|
|
|
default:
|
|
add_buffer(req_buffer, "\r\n", 2);
|
|
|
|
/* issue the request */
|
|
result = add_buffer_send(req_buffer, conn,
|
|
&data->info.request_size);
|
|
|
|
if(result)
|
|
failf(data, "Failed sending HTTP request");
|
|
else
|
|
/* HTTP GET/HEAD download: */
|
|
result = Curl_Transfer(conn, FIRSTSOCKET, -1, TRUE,
|
|
&http->readbytecount,
|
|
http->postdata?FIRSTSOCKET:-1,
|
|
http->postdata?&http->writebytecount:NULL);
|
|
}
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
#endif
|