2984 lines
91 KiB
C
2984 lines
91 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 - 2002, 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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/* -- WIN32 approved -- */
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#include "setup.h"
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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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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
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#include <winsock.h>
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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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#include <netinet/in.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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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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#ifdef VMS
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#include <in.h>
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#include <inet.h>
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#endif
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#ifdef HAVE_SETJMP_H
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#include <setjmp.h>
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#endif
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#ifndef HAVE_SELECT
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#error "We can't compile without select() support!"
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#endif
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#ifndef HAVE_SOCKET
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#error "We can't compile without socket() support!"
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#endif
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#endif
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#include "urldata.h"
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#include "netrc.h"
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#include "formdata.h"
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#include "base64.h"
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#include "ssluse.h"
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#include "hostip.h"
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#include "if2ip.h"
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#include "transfer.h"
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#include "sendf.h"
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#include "getpass.h"
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#include "progress.h"
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#include "cookie.h"
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#include "strequal.h"
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#include "escape.h"
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#include "strtok.h"
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#include "share.h"
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/* And now for the protocols */
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#include "ftp.h"
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#include "dict.h"
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#include "telnet.h"
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#include "http.h"
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#include "file.h"
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#include "ldap.h"
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#include "url.h"
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#include "connect.h"
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#include "ca-bundle.h"
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#include <curl/types.h>
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#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
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#include "inet_ntoa_r.h"
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#endif
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#ifdef KRB4
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#include "security.h"
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#endif
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/* The last #include file should be: */
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#ifdef MALLOCDEBUG
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#include "memdebug.h"
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#endif
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/* Local static prototypes */
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static int ConnectionKillOne(struct SessionHandle *data);
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static bool ConnectionExists(struct SessionHandle *data,
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struct connectdata *needle,
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struct connectdata **usethis);
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static unsigned int ConnectionStore(struct SessionHandle *data,
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struct connectdata *conn);
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#if !defined(WIN32)||defined(__CYGWIN32__)
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#ifndef RETSIGTYPE
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#define RETSIGTYPE void
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#endif
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#ifdef HAVE_SIGSETJMP
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extern sigjmp_buf curl_jmpenv;
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#endif
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static
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RETSIGTYPE alarmfunc(int signal)
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{
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/* this is for "-ansi -Wall -pedantic" to stop complaining! (rabe) */
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(void)signal;
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#ifdef HAVE_SIGSETJMP
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siglongjmp(curl_jmpenv, 1);
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#endif
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return;
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}
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#endif
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/*
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* This is the internal function curl_easy_cleanup() calls. This should
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* cleanup and free all resources associated with this sessionhandle.
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*
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* NOTE: if we ever add something that attempts to write to a socket or
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* similar here, we must ignore SIGPIPE first. It is currently only done
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* when curl_easy_perform() is invoked.
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*/
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CURLcode Curl_close(struct SessionHandle *data)
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{
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/* Loop through all open connections and kill them one by one */
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while(-1 != ConnectionKillOne(data));
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#ifdef USE_SSLEAY
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/* Close down all open SSL info and sessions */
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Curl_SSL_Close_All(data);
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#endif
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/* No longer a dirty share, if it exists */
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if (data->share)
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data->share->dirty--;
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if(data->change.cookielist) /* clean up list if any */
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curl_slist_free_all(data->change.cookielist);
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if(data->state.auth_host)
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free(data->state.auth_host);
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if(data->change.proxy_alloc)
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free(data->change.proxy);
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if(data->change.referer_alloc)
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free(data->change.referer);
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if(data->change.url_alloc)
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free(data->change.url);
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if(data->state.headerbuff)
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free(data->state.headerbuff);
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#ifndef CURL_DISABLE_HTTP
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if(data->set.cookiejar)
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/* we have a "destination" for all the cookies to get dumped to */
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Curl_cookie_output(data->cookies, data->set.cookiejar);
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Curl_cookie_cleanup(data->cookies);
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#endif
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/* free the connection cache */
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free(data->state.connects);
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if(data->info.contenttype)
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free(data->info.contenttype);
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free(data);
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return CURLE_OK;
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}
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static
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int my_getpass(void *clientp, const char *prompt, char* buffer, int buflen )
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{
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char *retbuf;
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clientp=NULL; /* prevent compiler warning */
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retbuf = getpass_r(prompt, buffer, buflen);
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if(NULL == retbuf)
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return 1;
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else
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return 0; /* success */
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}
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CURLcode Curl_open(struct SessionHandle **curl)
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{
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/* We don't yet support specifying the URL at this point */
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struct SessionHandle *data;
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/* Very simple start-up: alloc the struct, init it with zeroes and return */
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data = (struct SessionHandle *)malloc(sizeof(struct SessionHandle));
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if(!data)
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/* this is a very serious error */
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return CURLE_OUT_OF_MEMORY;
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memset(data, 0, sizeof(struct SessionHandle));
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/* We do some initial setup here, all those fields that can't be just 0 */
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data->state.headerbuff=(char*)malloc(HEADERSIZE);
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if(!data->state.headerbuff) {
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free(data); /* free the memory again */
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return CURLE_OUT_OF_MEMORY;
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}
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data->state.headersize=HEADERSIZE;
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data->set.out = stdout; /* default output to stdout */
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data->set.in = stdin; /* default input from stdin */
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data->set.err = stderr; /* default stderr to stderr */
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/* use fwrite as default function to store output */
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data->set.fwrite = (curl_write_callback)fwrite;
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/* use fread as default function to read input */
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data->set.fread = (curl_read_callback)fread;
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/* set the default passwd function */
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data->set.fpasswd = my_getpass;
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data->set.infilesize = -1; /* we don't know any size */
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data->state.current_speed = -1; /* init to negative == impossible */
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data->set.httpreq = HTTPREQ_GET; /* Default HTTP request */
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data->set.ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
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data->set.dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
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/* make libcurl quiet by default: */
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data->set.hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
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data->progress.flags |= PGRS_HIDE;
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/* Set the default size of the SSL session ID cache */
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data->set.ssl.numsessions = 5;
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data->set.proxyport = 1080;
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data->set.proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
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/* create an array with connection data struct pointers */
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data->state.numconnects = 5; /* hard-coded right now */
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data->state.connects = (struct connectdata **)
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malloc(sizeof(struct connectdata *) * data->state.numconnects);
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if(!data->state.connects) {
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free(data);
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return CURLE_OUT_OF_MEMORY;
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}
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/*
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* libcurl 7.10 introduces SSL verification *by default*! This needs to be
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* switched off unless wanted.
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*/
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data->set.ssl.verifypeer = TRUE;
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data->set.ssl.verifyhost = 2;
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#ifdef CURL_CA_BUNDLE
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/* This is our prefered CA cert bundle since install time */
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data->set.ssl.CAfile = (char *)CURL_CA_BUNDLE;
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#endif
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memset(data->state.connects, 0,
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sizeof(struct connectdata *)*data->state.numconnects);
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*curl = data;
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return CURLE_OK;
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}
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CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
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{
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va_list param;
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char *cookiefile;
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va_start(param, option);
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switch(option) {
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case CURLOPT_DNS_CACHE_TIMEOUT:
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data->set.dns_cache_timeout = va_arg(param, int);
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break;
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case CURLOPT_DNS_USE_GLOBAL_CACHE:
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{
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int use_cache = va_arg(param, int);
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if (use_cache) {
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Curl_global_host_cache_init();
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}
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data->set.global_dns_cache = (bool)use_cache;
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}
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break;
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case CURLOPT_SSL_CIPHER_LIST:
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/* set a list of cipher we want to use in the SSL connection */
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data->set.ssl.cipher_list = va_arg(param, char *);
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break;
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case CURLOPT_RANDOM_FILE:
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/*
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* This is the path name to a file that contains random data to seed
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* the random SSL stuff with. The file is only used for reading.
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*/
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data->set.ssl.random_file = va_arg(param, char *);
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break;
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case CURLOPT_EGDSOCKET:
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/*
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* The Entropy Gathering Daemon socket pathname
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*/
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data->set.ssl.egdsocket = va_arg(param, char *);
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break;
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case CURLOPT_MAXCONNECTS:
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/*
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* Set the absolute number of maximum simultaneous alive connection that
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* libcurl is allowed to have.
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*/
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{
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long newconnects= va_arg(param, long);
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struct connectdata **newptr;
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if(newconnects < data->state.numconnects) {
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/* Since this number is *decreased* from the existing number, we must
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close the possibly open connections that live on the indexes that
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are being removed! */
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int i;
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for(i=newconnects; i< data->state.numconnects; i++)
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Curl_disconnect(data->state.connects[i]);
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}
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if(newconnects) {
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newptr= (struct connectdata **)
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realloc(data->state.connects,
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sizeof(struct connectdata *) * newconnects);
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if(!newptr)
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/* we closed a few connections in vain, but so what? */
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return CURLE_OUT_OF_MEMORY;
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data->state.connects = newptr;
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data->state.numconnects = newconnects;
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}
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else {
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/* zero makes NO cache at all */
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if(data->state.connects)
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free(data->state.connects);
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data->state.connects=NULL;
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data->state.numconnects=0;
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}
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}
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break;
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case CURLOPT_FORBID_REUSE:
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/*
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* When this transfer is done, it must not be left to be reused by a
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* subsequent transfer but shall be closed immediately.
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*/
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data->set.reuse_forbid = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_FRESH_CONNECT:
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/*
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* This transfer shall not use a previously cached connection but
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* should be made with a fresh new connect!
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*/
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data->set.reuse_fresh = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_VERBOSE:
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/*
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* Verbose means infof() calls that give a lot of information about
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* the connection and transfer procedures as well as internal choices.
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*/
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data->set.verbose = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_HEADER:
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/*
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* Set to include the header in the general data output stream.
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*/
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data->set.http_include_header = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_NOPROGRESS:
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/*
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* Shut off the internal supported progress meter
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*/
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data->set.hide_progress = (bool)(va_arg(param, long)?TRUE:FALSE);
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if(data->set.hide_progress)
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data->progress.flags |= PGRS_HIDE;
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else
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data->progress.flags &= ~PGRS_HIDE;
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break;
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case CURLOPT_NOBODY:
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/*
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* Do not include the body part in the output data stream.
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*/
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data->set.no_body = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_FAILONERROR:
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/*
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* Don't output the >=300 error code HTML-page, but instead only
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* return error.
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*/
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data->set.http_fail_on_error = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_UPLOAD:
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/*
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* We want to sent data to the remote host
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*/
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data->set.upload = (bool)(va_arg(param, long)?TRUE:FALSE);
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if(data->set.upload)
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/* If this is HTTP, PUT is what's needed to "upload" */
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data->set.httpreq = HTTPREQ_PUT;
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break;
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case CURLOPT_FILETIME:
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/*
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* Try to get the file time of the remote document. The time will
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* later (possibly) become available using curl_easy_getinfo().
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*/
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data->set.get_filetime = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_FTPLISTONLY:
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/*
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* An FTP option that changes the command to one that asks for a list
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* only, no file info details.
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*/
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data->set.ftp_list_only = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_FTPAPPEND:
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/*
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* We want to upload and append to an existing (FTP) file.
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*/
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data->set.ftp_append = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_NETRC:
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/*
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* Parse the $HOME/.netrc file
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*/
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data->set.use_netrc = va_arg(param, long);
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break;
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case CURLOPT_FOLLOWLOCATION:
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/*
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* Follow Location: header hints on a HTTP-server.
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*/
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data->set.http_follow_location = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_HTTP_VERSION:
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/*
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* This sets a requested HTTP version to be used. The value is one of
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* the listed enums in curl/curl.h.
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*/
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data->set.httpversion = va_arg(param, long);
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break;
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case CURLOPT_TRANSFERTEXT:
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/*
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* This option was previously named 'FTPASCII'. Renamed to work with
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* more protocols than merely FTP.
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*
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* Transfer using ASCII (instead of BINARY).
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*/
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data->set.ftp_ascii = (bool)(va_arg(param, long)?TRUE:FALSE);
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break;
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case CURLOPT_PUT:
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/*
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* Use the HTTP PUT request to transfer data if this is TRUE. If this is
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* FALSE, don't set the httpreq. We can't know what to revert it to!
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*/
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if(va_arg(param, long))
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data->set.httpreq = HTTPREQ_PUT;
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break;
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case CURLOPT_TIMECONDITION:
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/*
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* Set HTTP time condition. This must be one of the defines in the
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* curl/curl.h header file.
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*/
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data->set.timecondition = va_arg(param, long);
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break;
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case CURLOPT_TIMEVALUE:
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/*
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* This is the value to compare with the remote document with the
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* method set with CURLOPT_TIMECONDITION
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*/
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data->set.timevalue = va_arg(param, long);
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break;
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case CURLOPT_SSLVERSION:
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/*
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* Set explicit SSL version to try to connect with, as some SSL
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* implementations are lame.
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*/
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data->set.ssl.version = va_arg(param, long);
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break;
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case CURLOPT_COOKIESESSION:
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/*
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* Set this option to TRUE to start a new "cookie session". It will
|
|
* prevent the forthcoming read-cookies-from-file actions to accept
|
|
* cookies that are marked as being session cookies, as they belong to a
|
|
* previous session.
|
|
*
|
|
* In the original Netscape cookie spec, "session cookies" are cookies
|
|
* with no expire date set. RFC2109 describes the same action if no
|
|
* 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
|
|
* a 'Discard' action that can enforce the discard even for cookies that
|
|
* have a Max-Age.
|
|
*
|
|
* We run mostly with the original cookie spec, as hardly anyone implements
|
|
* anything else.
|
|
*/
|
|
data->set.cookiesession = (bool)va_arg(param, long);
|
|
break;
|
|
|
|
#ifndef CURL_DISABLE_HTTP
|
|
case CURLOPT_COOKIEFILE:
|
|
/*
|
|
* Set cookie file to read and parse. Can be used multiple times.
|
|
*/
|
|
cookiefile = (char *)va_arg(param, void *);
|
|
if(cookiefile)
|
|
/* append the cookie file name to the list of file names, and deal with
|
|
them later */
|
|
data->change.cookielist =
|
|
curl_slist_append(data->change.cookielist, cookiefile);
|
|
break;
|
|
|
|
case CURLOPT_COOKIEJAR:
|
|
/*
|
|
* Set cookie file name to dump all cookies to when we're done.
|
|
*/
|
|
data->set.cookiejar = (char *)va_arg(param, void *);
|
|
|
|
/*
|
|
* Activate the cookie parser. This may or may not already
|
|
* have been made.
|
|
*/
|
|
data->cookies = Curl_cookie_init(NULL, data->cookies,
|
|
data->set.cookiesession);
|
|
break;
|
|
#endif
|
|
|
|
case CURLOPT_WRITEHEADER:
|
|
/*
|
|
* Custom pointer to pass the header write callback function
|
|
*/
|
|
data->set.writeheader = (void *)va_arg(param, void *);
|
|
break;
|
|
case CURLOPT_COOKIE:
|
|
/*
|
|
* Cookie string to send to the remote server in the request.
|
|
*/
|
|
data->set.cookie = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_ERRORBUFFER:
|
|
/*
|
|
* Error buffer provided by the caller to get the human readable
|
|
* error string in.
|
|
*/
|
|
data->set.errorbuffer = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_FILE:
|
|
/*
|
|
* FILE pointer to write to or include in the data write callback
|
|
*/
|
|
data->set.out = va_arg(param, FILE *);
|
|
break;
|
|
case CURLOPT_FTPPORT:
|
|
/*
|
|
* Use FTP PORT, this also specifies which IP address to use
|
|
*/
|
|
data->set.ftpport = va_arg(param, char *);
|
|
data->set.ftp_use_port = (bool)(data->set.ftpport?TRUE:FALSE);
|
|
break;
|
|
|
|
case CURLOPT_FTP_USE_EPSV:
|
|
data->set.ftp_use_epsv = (bool)(va_arg(param, long)?TRUE:FALSE);
|
|
break;
|
|
|
|
case CURLOPT_HTTPHEADER:
|
|
/*
|
|
* Set a list with HTTP headers to use (or replace internals with)
|
|
*/
|
|
data->set.headers = va_arg(param, struct curl_slist *);
|
|
break;
|
|
case CURLOPT_CUSTOMREQUEST:
|
|
/*
|
|
* Set a custom string to use as request
|
|
*/
|
|
data->set.customrequest = va_arg(param, char *);
|
|
|
|
/* we don't set
|
|
data->set.httpreq = HTTPREQ_CUSTOM;
|
|
here, we continue as if we were using the already set type
|
|
and this just changes the actual request keyword */
|
|
break;
|
|
case CURLOPT_HTTPPOST:
|
|
/*
|
|
* Set to make us do HTTP POST
|
|
*/
|
|
data->set.httppost = va_arg(param, struct HttpPost *);
|
|
if(data->set.httppost)
|
|
data->set.httpreq = HTTPREQ_POST_FORM;
|
|
break;
|
|
|
|
case CURLOPT_HTTPGET:
|
|
/*
|
|
* Set to force us do HTTP GET
|
|
*/
|
|
if(va_arg(param, long)) {
|
|
data->set.httpreq = HTTPREQ_GET;
|
|
data->set.upload = FALSE; /* switch off upload */
|
|
}
|
|
break;
|
|
|
|
case CURLOPT_INFILE:
|
|
/*
|
|
* FILE pointer to read the file to be uploaded from. Or possibly
|
|
* used as argument to the read callback.
|
|
*/
|
|
data->set.in = va_arg(param, FILE *);
|
|
break;
|
|
case CURLOPT_INFILESIZE:
|
|
/*
|
|
* If known, this should inform curl about the file size of the
|
|
* to-be-uploaded file.
|
|
*/
|
|
data->set.infilesize = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_LOW_SPEED_LIMIT:
|
|
/*
|
|
* The low speed limit that if transfers are below this for
|
|
* CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
|
|
*/
|
|
data->set.low_speed_limit=va_arg(param, long);
|
|
break;
|
|
case CURLOPT_LOW_SPEED_TIME:
|
|
/*
|
|
* The low speed time that if transfers are below the set
|
|
* CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
|
|
*/
|
|
data->set.low_speed_time=va_arg(param, long);
|
|
break;
|
|
case CURLOPT_URL:
|
|
/*
|
|
* The URL to fetch.
|
|
*/
|
|
if(data->change.url_alloc) {
|
|
/* the already set URL is allocated, free it first! */
|
|
free(data->change.url);
|
|
data->change.url_alloc=FALSE;
|
|
}
|
|
data->set.set_url = va_arg(param, char *);
|
|
data->change.url = data->set.set_url;
|
|
break;
|
|
case CURLOPT_PORT:
|
|
/*
|
|
* The port number to use when getting the URL
|
|
*/
|
|
data->set.use_port = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_POST:
|
|
/* Does this option serve a purpose anymore? Yes it does, when
|
|
CURLOPT_POSTFIELDS isn't used and the POST data is read off the
|
|
callback! */
|
|
if(va_arg(param, long))
|
|
data->set.httpreq = HTTPREQ_POST;
|
|
break;
|
|
case CURLOPT_POSTFIELDS:
|
|
/*
|
|
* A string with POST data. Makes curl HTTP POST.
|
|
*/
|
|
data->set.postfields = va_arg(param, char *);
|
|
if(data->set.postfields)
|
|
data->set.httpreq = HTTPREQ_POST;
|
|
break;
|
|
case CURLOPT_POSTFIELDSIZE:
|
|
/*
|
|
* The size of the POSTFIELD data, if curl should now do a strlen
|
|
* to find out. Enables binary posts.
|
|
*/
|
|
data->set.postfieldsize = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_REFERER:
|
|
/*
|
|
* String to set in the HTTP Referer: field.
|
|
*/
|
|
if(data->change.referer_alloc) {
|
|
free(data->change.referer);
|
|
data->change.referer_alloc = FALSE;
|
|
}
|
|
data->set.set_referer = va_arg(param, char *);
|
|
data->change.referer = data->set.set_referer;
|
|
break;
|
|
case CURLOPT_AUTOREFERER:
|
|
/*
|
|
* Switch on automatic referer that gets set if curl follows locations.
|
|
*/
|
|
data->set.http_auto_referer = (bool)(va_arg(param, long)?TRUE:FALSE);
|
|
break;
|
|
case CURLOPT_PROXY:
|
|
/*
|
|
* Set proxy server:port to use as HTTP proxy.
|
|
*
|
|
* If the proxy is set to "" we explicitly say that we don't want to use a
|
|
* proxy (even though there might be environment variables saying so).
|
|
*
|
|
* Setting it to NULL, means no proxy but allows the environment variables
|
|
* to decide for us.
|
|
*/
|
|
if(data->change.proxy_alloc) {
|
|
/*
|
|
* The already set string is allocated, free that first
|
|
*/
|
|
data->change.proxy_alloc=FALSE;;
|
|
free(data->change.proxy);
|
|
}
|
|
data->set.set_proxy = va_arg(param, char *);
|
|
data->change.proxy = data->set.set_proxy;
|
|
break;
|
|
case CURLOPT_HTTPPROXYTUNNEL:
|
|
/*
|
|
* Tunnel operations through the proxy instead of normal proxy use
|
|
*/
|
|
data->set.tunnel_thru_httpproxy = (bool)(va_arg(param, long)?TRUE:FALSE);
|
|
break;
|
|
case CURLOPT_PROXYPORT:
|
|
/*
|
|
* Explicitly set HTTP proxy port number.
|
|
*/
|
|
data->set.proxyport = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_TIMEOUT:
|
|
/*
|
|
* The maximum time you allow curl to use for a single transfer
|
|
* operation.
|
|
*/
|
|
data->set.timeout = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_CONNECTTIMEOUT:
|
|
/*
|
|
* The maximum time you allow curl to use to connect.
|
|
*/
|
|
data->set.connecttimeout = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_MAXREDIRS:
|
|
/*
|
|
* The maximum amount of hops you allow curl to follow Location:
|
|
* headers. This should mostly be used to detect never-ending loops.
|
|
*/
|
|
data->set.maxredirs = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_USERAGENT:
|
|
/*
|
|
* String to use in the HTTP User-Agent field
|
|
*/
|
|
data->set.useragent = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_ENCODING:
|
|
/*
|
|
* String to use at the value of Accept-Encoding header. 08/28/02 jhrg
|
|
*/
|
|
data->set.encoding = va_arg(param, char *);
|
|
break;
|
|
|
|
case CURLOPT_USERPWD:
|
|
/*
|
|
* user:password to use in the operation
|
|
*/
|
|
data->set.userpwd = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_POSTQUOTE:
|
|
/*
|
|
* List of RAW FTP commands to use after a transfer
|
|
*/
|
|
data->set.postquote = va_arg(param, struct curl_slist *);
|
|
break;
|
|
case CURLOPT_PREQUOTE:
|
|
/*
|
|
* List of RAW FTP commands to use prior to RETR (Wesley Laxton)
|
|
*/
|
|
data->set.prequote = va_arg(param, struct curl_slist *);
|
|
break;
|
|
case CURLOPT_QUOTE:
|
|
/*
|
|
* List of RAW FTP commands to use before a transfer
|
|
*/
|
|
data->set.quote = va_arg(param, struct curl_slist *);
|
|
break;
|
|
case CURLOPT_PROGRESSFUNCTION:
|
|
/*
|
|
* Progress callback function
|
|
*/
|
|
data->set.fprogress = va_arg(param, curl_progress_callback);
|
|
if(data->set.fprogress)
|
|
data->progress.callback = TRUE; /* no longer internal */
|
|
else
|
|
data->progress.callback = FALSE; /* NULL enforces internal */
|
|
|
|
break;
|
|
case CURLOPT_PROGRESSDATA:
|
|
/*
|
|
* Custom client data to pass to the progress callback
|
|
*/
|
|
data->set.progress_client = va_arg(param, void *);
|
|
break;
|
|
case CURLOPT_PASSWDFUNCTION:
|
|
/*
|
|
* Password prompt callback
|
|
*/
|
|
data->set.fpasswd = va_arg(param, curl_passwd_callback);
|
|
/*
|
|
* if the callback provided is null, reset the default callback
|
|
*/
|
|
if(!data->set.fpasswd)
|
|
{
|
|
data->set.fpasswd = my_getpass;
|
|
}
|
|
break;
|
|
case CURLOPT_PASSWDDATA:
|
|
/*
|
|
* Custom client data to pass to the password callback
|
|
*/
|
|
data->set.passwd_client = va_arg(param, void *);
|
|
break;
|
|
case CURLOPT_PROXYUSERPWD:
|
|
/*
|
|
* user:password needed to use the proxy
|
|
*/
|
|
data->set.proxyuserpwd = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_RANGE:
|
|
/*
|
|
* What range of the file you want to transfer
|
|
*/
|
|
data->set.set_range = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_RESUME_FROM:
|
|
/*
|
|
* Resume transfer at the give file position
|
|
*/
|
|
data->set.set_resume_from = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_DEBUGFUNCTION:
|
|
/*
|
|
* stderr write callback.
|
|
*/
|
|
data->set.fdebug = va_arg(param, curl_debug_callback);
|
|
/*
|
|
* if the callback provided is NULL, it'll use the default callback
|
|
*/
|
|
break;
|
|
case CURLOPT_DEBUGDATA:
|
|
/*
|
|
* Set to a void * that should receive all error writes. This
|
|
* defaults to CURLOPT_STDERR for normal operations.
|
|
*/
|
|
data->set.debugdata = va_arg(param, void *);
|
|
break;
|
|
case CURLOPT_STDERR:
|
|
/*
|
|
* Set to a FILE * that should receive all error writes. This
|
|
* defaults to stderr for normal operations.
|
|
*/
|
|
data->set.err = va_arg(param, FILE *);
|
|
if(!data->set.err)
|
|
data->set.err = stderr;
|
|
break;
|
|
case CURLOPT_HEADERFUNCTION:
|
|
/*
|
|
* Set header write callback
|
|
*/
|
|
data->set.fwrite_header = va_arg(param, curl_write_callback);
|
|
break;
|
|
case CURLOPT_WRITEFUNCTION:
|
|
/*
|
|
* Set data write callback
|
|
*/
|
|
data->set.fwrite = va_arg(param, curl_write_callback);
|
|
break;
|
|
case CURLOPT_READFUNCTION:
|
|
/*
|
|
* Read data callback
|
|
*/
|
|
data->set.fread = va_arg(param, curl_read_callback);
|
|
break;
|
|
case CURLOPT_SSLCERT:
|
|
/*
|
|
* String that holds file name of the SSL certificate to use
|
|
*/
|
|
data->set.cert = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_SSLCERTTYPE:
|
|
/*
|
|
* String that holds file type of the SSL certificate to use
|
|
*/
|
|
data->set.cert_type = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_SSLKEY:
|
|
/*
|
|
* String that holds file name of the SSL certificate to use
|
|
*/
|
|
data->set.key = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_SSLKEYTYPE:
|
|
/*
|
|
* String that holds file type of the SSL certificate to use
|
|
*/
|
|
data->set.key_type = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_SSLKEYPASSWD:
|
|
/*
|
|
* String that holds the SSL private key password.
|
|
*/
|
|
data->set.key_passwd = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_SSLENGINE:
|
|
/*
|
|
* String that holds the SSL crypto engine.
|
|
*/
|
|
#ifdef HAVE_OPENSSL_ENGINE_H
|
|
{
|
|
const char *cpTemp = va_arg(param, char *);
|
|
ENGINE *e;
|
|
if (cpTemp && cpTemp[0]) {
|
|
e = ENGINE_by_id(cpTemp);
|
|
if (e) {
|
|
if (data->engine) {
|
|
ENGINE_free(data->engine);
|
|
}
|
|
data->engine = e;
|
|
}
|
|
else {
|
|
failf(data, "SSL Engine '%s' not found", cpTemp);
|
|
return CURLE_SSL_ENGINE_NOTFOUND;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
return CURLE_SSL_ENGINE_NOTFOUND;
|
|
#endif
|
|
break;
|
|
case CURLOPT_SSLENGINE_DEFAULT:
|
|
/*
|
|
* flag to set engine as default.
|
|
*/
|
|
#ifdef HAVE_OPENSSL_ENGINE_H
|
|
if (data->engine) {
|
|
if (ENGINE_set_default(data->engine, ENGINE_METHOD_ALL) > 0) {
|
|
#ifdef DEBUG
|
|
fprintf(stderr,"set default crypto engine\n");
|
|
#endif
|
|
}
|
|
else {
|
|
#ifdef DEBUG
|
|
failf(data, "set default crypto engine failed");
|
|
#endif
|
|
return CURLE_SSL_ENGINE_SETFAILED;
|
|
}
|
|
}
|
|
#endif
|
|
break;
|
|
case CURLOPT_CRLF:
|
|
/*
|
|
* Kludgy option to enable CRLF convertions. Subject for removal.
|
|
*/
|
|
data->set.crlf = (bool)(va_arg(param, long)?TRUE:FALSE);
|
|
break;
|
|
case CURLOPT_INTERFACE:
|
|
/*
|
|
* Set what interface to bind to when performing an operation and thus
|
|
* what from-IP your connection will use.
|
|
*/
|
|
data->set.device = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_KRB4LEVEL:
|
|
/*
|
|
* A string that defines the krb4 security level.
|
|
*/
|
|
data->set.krb4_level = va_arg(param, char *);
|
|
data->set.krb4=(bool)(data->set.krb4_level?TRUE:FALSE);
|
|
break;
|
|
case CURLOPT_SSL_VERIFYPEER:
|
|
/*
|
|
* Enable peer SSL verifying.
|
|
*/
|
|
data->set.ssl.verifypeer = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_SSL_VERIFYHOST:
|
|
/*
|
|
* Enable verification of the CN contained in the peer certificate
|
|
*/
|
|
data->set.ssl.verifyhost = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_CAINFO:
|
|
/*
|
|
* Set CA info for SSL connection. Specify file name of the CA certificate
|
|
*/
|
|
data->set.ssl.CAfile = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_CAPATH:
|
|
/*
|
|
* Set CA path info for SSL connection. Specify directory name of the CA
|
|
* certificates which have been prepared using openssl c_rehash utility.
|
|
*/
|
|
/* This does not work on windows. */
|
|
data->set.ssl.CApath = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_TELNETOPTIONS:
|
|
/*
|
|
* Set a linked list of telnet options
|
|
*/
|
|
data->set.telnet_options = va_arg(param, struct curl_slist *);
|
|
break;
|
|
|
|
case CURLOPT_BUFFERSIZE:
|
|
/*
|
|
* The application kindly asks for a differently sized receive buffer.
|
|
* If it seems reasonable, we'll use it.
|
|
*/
|
|
data->set.buffer_size = va_arg(param, long);
|
|
|
|
if(data->set.buffer_size> (BUFSIZE -1 ))
|
|
data->set.buffer_size = 0; /* huge internal default */
|
|
|
|
break;
|
|
|
|
case CURLOPT_NOSIGNAL:
|
|
/*
|
|
* The application asks not to set any signal() or alarm() handlers,
|
|
* even when using a timeout.
|
|
*/
|
|
data->set.no_signal = (bool)(va_arg(param, long) ? TRUE : FALSE);
|
|
break;
|
|
|
|
case CURLOPT_SHARE:
|
|
{
|
|
struct Curl_share *set;
|
|
set = va_arg(param, struct Curl_share *);
|
|
if(data->share)
|
|
data->share->dirty--;
|
|
|
|
data->share = set;
|
|
data->share->dirty++;
|
|
}
|
|
break;
|
|
|
|
case CURLOPT_PROXYTYPE:
|
|
/*
|
|
* Set proxy type. HTTP/SOCKS4/SOCKS5
|
|
*/
|
|
data->set.proxytype = va_arg(param, long);
|
|
break;
|
|
|
|
case CURLOPT_PRIVATE:
|
|
/*
|
|
* Set private data pointer.
|
|
*/
|
|
data->set.private = va_arg(param, char *);
|
|
break;
|
|
|
|
case CURLOPT_HTTP200ALIASES:
|
|
/*
|
|
* Set a list of aliases for HTTP 200 in response header
|
|
*/
|
|
data->set.http200aliases = va_arg(param, struct curl_slist *);
|
|
break;
|
|
|
|
default:
|
|
/* unknown tag and its companion, just ignore: */
|
|
return CURLE_FAILED_INIT; /* correct this */
|
|
}
|
|
return CURLE_OK;
|
|
}
|
|
|
|
CURLcode Curl_disconnect(struct connectdata *conn)
|
|
{
|
|
if(!conn)
|
|
return CURLE_OK; /* this is closed and fine already */
|
|
|
|
/*
|
|
* The range string is usually freed in curl_done(), but we might
|
|
* get here *instead* if we fail prematurely. Thus we need to be able
|
|
* to free this resource here as well.
|
|
*/
|
|
if(conn->bits.rangestringalloc) {
|
|
free(conn->range);
|
|
conn->bits.rangestringalloc = FALSE;
|
|
}
|
|
|
|
if(-1 != conn->connectindex) {
|
|
/* unlink ourselves! */
|
|
infof(conn->data, "Closing connection #%d\n", conn->connectindex);
|
|
conn->data->state.connects[conn->connectindex] = NULL;
|
|
}
|
|
|
|
if(conn->curl_disconnect)
|
|
/* This is set if protocol-specific cleanups should be made */
|
|
conn->curl_disconnect(conn);
|
|
|
|
if(conn->proto.generic)
|
|
free(conn->proto.generic);
|
|
|
|
if(conn->newurl)
|
|
free(conn->newurl);
|
|
|
|
if(conn->path) /* the URL path part */
|
|
free(conn->path);
|
|
|
|
#ifdef USE_SSLEAY
|
|
Curl_SSL_Close(conn);
|
|
#endif /* USE_SSLEAY */
|
|
|
|
/* close possibly still open sockets */
|
|
if(-1 != conn->secondarysocket)
|
|
sclose(conn->secondarysocket);
|
|
if(-1 != conn->firstsocket)
|
|
sclose(conn->firstsocket);
|
|
|
|
if(conn->allocptr.proxyuserpwd)
|
|
free(conn->allocptr.proxyuserpwd);
|
|
if(conn->allocptr.uagent)
|
|
free(conn->allocptr.uagent);
|
|
if(conn->allocptr.userpwd)
|
|
free(conn->allocptr.userpwd);
|
|
if(conn->allocptr.accept_encoding)
|
|
free(conn->allocptr.accept_encoding);
|
|
if(conn->allocptr.rangeline)
|
|
free(conn->allocptr.rangeline);
|
|
if(conn->allocptr.ref)
|
|
free(conn->allocptr.ref);
|
|
if(conn->allocptr.cookie)
|
|
free(conn->allocptr.cookie);
|
|
if(conn->allocptr.host)
|
|
free(conn->allocptr.host);
|
|
|
|
if(conn->proxyhost)
|
|
free(conn->proxyhost);
|
|
|
|
free(conn); /* free all the connection oriented data */
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* This function should return TRUE if the socket is to be assumed to
|
|
* be dead. Most commonly this happens when the server has closed the
|
|
* connection due to inactivity.
|
|
*/
|
|
static bool SocketIsDead(int sock)
|
|
{
|
|
int sval;
|
|
bool ret_val = TRUE;
|
|
fd_set check_set;
|
|
struct timeval to;
|
|
|
|
FD_ZERO(&check_set);
|
|
FD_SET(sock,&check_set);
|
|
|
|
to.tv_sec = 0;
|
|
to.tv_usec = 0;
|
|
|
|
sval = select(sock + 1, &check_set, 0, 0, &to);
|
|
if(sval == 0)
|
|
/* timeout */
|
|
ret_val = FALSE;
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/*
|
|
* Given one filled in connection struct (named needle), this function should
|
|
* detect if there already is one that have all the significant details
|
|
* exactly the same and thus should be used instead.
|
|
*/
|
|
static bool
|
|
ConnectionExists(struct SessionHandle *data,
|
|
struct connectdata *needle,
|
|
struct connectdata **usethis)
|
|
{
|
|
long i;
|
|
struct connectdata *check;
|
|
|
|
for(i=0; i< data->state.numconnects; i++) {
|
|
bool match = FALSE;
|
|
/*
|
|
* Note that if we use a HTTP proxy, we check connections to that
|
|
* proxy and not to the actual remote server.
|
|
*/
|
|
check = data->state.connects[i];
|
|
if(!check)
|
|
/* NULL pointer means not filled-in entry */
|
|
continue;
|
|
if(!needle->bits.httpproxy || needle->protocol&PROT_SSL) {
|
|
/* The requested connection does not use a HTTP proxy or it
|
|
uses SSL. */
|
|
|
|
if(!(needle->protocol&PROT_SSL) && check->bits.httpproxy)
|
|
/* we don't do SSL but the cached connection has a proxy,
|
|
then don't match this */
|
|
continue;
|
|
|
|
if(strequal(needle->protostr, check->protostr) &&
|
|
strequal(needle->name, check->name) &&
|
|
(needle->remote_port == check->remote_port) ) {
|
|
if(strequal(needle->protostr, "FTP")) {
|
|
/* This is FTP, verify that we're using the same name and
|
|
password as well */
|
|
if(!strequal(needle->data->state.user, check->proto.ftp->user) ||
|
|
!strequal(needle->data->state.passwd, check->proto.ftp->passwd)) {
|
|
/* one of them was different */
|
|
continue;
|
|
}
|
|
}
|
|
match = TRUE;
|
|
}
|
|
}
|
|
else { /* The requested needle connection is using a proxy,
|
|
is the checked one using the same? */
|
|
if(check->bits.httpproxy &&
|
|
strequal(needle->proxyhost, check->proxyhost) &&
|
|
needle->port == check->port) {
|
|
/* This is the same proxy connection, use it! */
|
|
match = TRUE;
|
|
}
|
|
}
|
|
|
|
if(match) {
|
|
bool dead = SocketIsDead(check->firstsocket);
|
|
if(dead) {
|
|
/*
|
|
*/
|
|
infof(data, "Connection %d seems to be dead!\n", i);
|
|
Curl_disconnect(check); /* disconnect resources */
|
|
data->state.connects[i]=NULL; /* nothing here */
|
|
|
|
/* There's no need to continue searching, because we only store
|
|
one connection for each unique set of identifiers */
|
|
return FALSE;
|
|
}
|
|
|
|
*usethis = check;
|
|
return TRUE; /* yes, we found one to use! */
|
|
}
|
|
}
|
|
return FALSE; /* no matching connecting exists */
|
|
}
|
|
|
|
/*
|
|
* This function frees/closes a connection in the connection cache. This
|
|
* should take the previously set policy into account when deciding which
|
|
* of the connections to kill.
|
|
*/
|
|
static int
|
|
ConnectionKillOne(struct SessionHandle *data)
|
|
{
|
|
long i;
|
|
struct connectdata *conn;
|
|
int highscore=-1;
|
|
int connindex=-1;
|
|
int score;
|
|
CURLcode result;
|
|
struct timeval now;
|
|
|
|
now = Curl_tvnow();
|
|
|
|
for(i=0; i< data->state.numconnects; i++) {
|
|
conn = data->state.connects[i];
|
|
|
|
if(!conn)
|
|
continue;
|
|
|
|
/*
|
|
* By using the set policy, we score each connection.
|
|
*/
|
|
switch(data->set.closepolicy) {
|
|
case CURLCLOSEPOLICY_LEAST_RECENTLY_USED:
|
|
default:
|
|
/*
|
|
* Set higher score for the age passed since the connection
|
|
* was used.
|
|
*/
|
|
score = Curl_tvdiff(now, conn->now);
|
|
break;
|
|
case CURLCLOSEPOLICY_OLDEST:
|
|
/*
|
|
* Set higher score for the age passed since the connection
|
|
* was created.
|
|
*/
|
|
score = Curl_tvdiff(now, conn->created);
|
|
break;
|
|
}
|
|
|
|
if(score > highscore) {
|
|
highscore = score;
|
|
connindex = i;
|
|
}
|
|
}
|
|
if(connindex >= 0) {
|
|
|
|
/* the winner gets the honour of being disconnected */
|
|
result = Curl_disconnect(data->state.connects[connindex]);
|
|
|
|
/* clean the array entry */
|
|
data->state.connects[connindex] = NULL;
|
|
}
|
|
|
|
return connindex; /* return the available index or -1 */
|
|
}
|
|
|
|
/*
|
|
* The given input connection struct pointer is to be stored. If the "cache"
|
|
* is already full, we must clean out the most suitable using the previously
|
|
* set policy.
|
|
*
|
|
* The given connection should be unique. That must've been checked prior to
|
|
* this call.
|
|
*/
|
|
static unsigned int
|
|
ConnectionStore(struct SessionHandle *data,
|
|
struct connectdata *conn)
|
|
{
|
|
long i;
|
|
for(i=0; i< data->state.numconnects; i++) {
|
|
if(!data->state.connects[i])
|
|
break;
|
|
}
|
|
if(i == data->state.numconnects) {
|
|
/* there was no room available, kill one */
|
|
i = ConnectionKillOne(data);
|
|
infof(data, "Connection (#%d) was killed to make room\n", i);
|
|
}
|
|
|
|
if(-1 != i) {
|
|
/* only do this if a true index was returned, if -1 was returned there
|
|
is no room in the cache for an unknown reason and we cannot store
|
|
this there. */
|
|
data->state.connects[i] = conn; /* fill in this */
|
|
conn->connectindex = i; /* make the child know where the pointer to this
|
|
particular data is stored */
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* This function logs in to a SOCKS5 proxy and sends the specifies the final
|
|
* desitination server.
|
|
*/
|
|
static int handleSock5Proxy(
|
|
const char *proxy_name,
|
|
const char *proxy_password,
|
|
struct connectdata *conn,
|
|
int sock)
|
|
{
|
|
unsigned char socksreq[600]; /* room for large user/pw (255 max each) */
|
|
int actualread;
|
|
int written;
|
|
CURLcode result;
|
|
|
|
Curl_nonblock(sock, FALSE);
|
|
|
|
socksreq[0] = 5; /* version */
|
|
socksreq[1] = (char)(proxy_name[0] ? 2 : 1); /* number of methods (below) */
|
|
socksreq[2] = 0; /* no authentication */
|
|
socksreq[3] = 2; /* username/password */
|
|
|
|
result = Curl_write(conn, sock, (char *)socksreq, (2 + (int)socksreq[1]),
|
|
&written);
|
|
if ((result != CURLE_OK) || (written != (2 + (int)socksreq[1]))) {
|
|
failf(conn->data, "Unable to send initial SOCKS5 request.");
|
|
return 1;
|
|
}
|
|
|
|
result=Curl_read(conn, sock, (char *)socksreq, 2, &actualread);
|
|
if ((result != CURLE_OK) || (actualread != 2)) {
|
|
failf(conn->data, "Unable to receive initial SOCKS5 response.");
|
|
return 1;
|
|
}
|
|
|
|
if (socksreq[0] != 5) {
|
|
failf(conn->data, "Received invalid version in initial SOCKS5 response.");
|
|
return 1;
|
|
}
|
|
if (socksreq[1] == 0) {
|
|
/* Nothing to do, no authentication needed */
|
|
;
|
|
}
|
|
else if (socksreq[1] == 2) {
|
|
/* Needs user name and password */
|
|
int userlen, pwlen, len;
|
|
|
|
userlen = (int)strlen(proxy_name);
|
|
pwlen = (int)strlen(proxy_password);
|
|
|
|
/* username/password request looks like
|
|
* +----+------+----------+------+----------+
|
|
* |VER | ULEN | UNAME | PLEN | PASSWD |
|
|
* +----+------+----------+------+----------+
|
|
* | 1 | 1 | 1 to 255 | 1 | 1 to 255 |
|
|
* +----+------+----------+------+----------+
|
|
*/
|
|
len = 0;
|
|
socksreq[len++] = 1; /* username/pw subnegotiation version */
|
|
socksreq[len++] = (char) userlen;
|
|
memcpy(socksreq + len, proxy_name, (int) userlen);
|
|
len += userlen;
|
|
socksreq[len++] = (char) pwlen;
|
|
memcpy(socksreq + len, proxy_password, (int) pwlen);
|
|
len += pwlen;
|
|
|
|
result = Curl_write(conn, sock, (char *)socksreq, len, &written);
|
|
if ((result != CURLE_OK) || (len != written)) {
|
|
failf(conn->data, "Failed to send SOCKS5 sub-negotiation request.");
|
|
return 1;
|
|
}
|
|
|
|
result=Curl_read(conn, sock, (char *)socksreq, 2, &actualread);
|
|
if ((result != CURLE_OK) || (actualread != 2)) {
|
|
failf(conn->data, "Unable to receive SOCKS5 sub-negotiation response.");
|
|
return 1;
|
|
}
|
|
|
|
if ((socksreq[0] != 5) || /* version */
|
|
(socksreq[1] != 0)) { /* status */
|
|
failf(conn->data, "User was rejected by the SOCKS5 server (%d %d).",
|
|
socksreq[0], socksreq[1]);
|
|
return 1;
|
|
}
|
|
|
|
/* Everything is good so far, user was authenticated! */
|
|
}
|
|
else {
|
|
/* error */
|
|
if (socksreq[1] == 1) {
|
|
failf(conn->data,
|
|
"SOCKS5 GSSAPI per-message authentication is not supported.");
|
|
return 1;
|
|
}
|
|
else if (socksreq[1] == 255) {
|
|
if (proxy_name[0] == 0) {
|
|
failf(conn->data,
|
|
"No authentication method was acceptable. (It is quite likely"
|
|
" that the SOCKS5 server wanted a username/password, since none"
|
|
" was supplied to the server on this connection.)");
|
|
}
|
|
else {
|
|
failf(conn->data, "No authentication method was acceptable.");
|
|
}
|
|
return 1;
|
|
}
|
|
else {
|
|
failf(conn->data,
|
|
"Undocumented SOCKS5 mode attempted to be used by server.");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* Authentication is complete, now specify destination to the proxy */
|
|
socksreq[0] = 5; /* version (SOCKS5) */
|
|
socksreq[1] = 1; /* connect */
|
|
socksreq[2] = 0; /* must be zero */
|
|
socksreq[3] = 1; /* IPv4 = 1 */
|
|
|
|
{
|
|
#ifndef ENABLE_IPV6
|
|
struct Curl_dns_entry *dns;
|
|
Curl_addrinfo *hp=NULL;
|
|
dns = Curl_resolv(conn->data, conn->hostname, conn->remote_port);
|
|
/*
|
|
* We cannot use 'hostent' as a struct that Curl_resolv() returns. It
|
|
* returns a Curl_addrinfo pointer that may not always look the same.
|
|
*/
|
|
if(dns)
|
|
hp=dns->addr;
|
|
if (hp && hp->h_addr_list[0]) {
|
|
socksreq[4] = ((char*)hp->h_addr_list[0])[0];
|
|
socksreq[5] = ((char*)hp->h_addr_list[0])[1];
|
|
socksreq[6] = ((char*)hp->h_addr_list[0])[2];
|
|
socksreq[7] = ((char*)hp->h_addr_list[0])[3];
|
|
|
|
Curl_resolv_unlock(dns); /* not used anymore from now on */
|
|
}
|
|
else {
|
|
failf(conn->data, "Failed to resolve \"%s\" for SOCKS5 connect.",
|
|
conn->hostname);
|
|
return 1;
|
|
}
|
|
#else
|
|
failf(conn->data,
|
|
"%s:%d has an internal error an needs to be fixed to work",
|
|
__FILE__, __LINE__);
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
*((unsigned short*)&socksreq[8]) = htons(conn->remote_port);
|
|
|
|
{
|
|
const int packetsize = 10;
|
|
|
|
result = Curl_write(conn, sock, (char *)socksreq, packetsize, &written);
|
|
if ((result != CURLE_OK) || (written != packetsize)) {
|
|
failf(conn->data, "Failed to send SOCKS5 connect request.");
|
|
return 1;
|
|
}
|
|
|
|
result = Curl_read(conn, sock, (char *)socksreq, packetsize, &actualread);
|
|
if ((result != CURLE_OK) || (actualread != packetsize)) {
|
|
failf(conn->data, "Failed to receive SOCKS5 connect request ack.");
|
|
return 1;
|
|
}
|
|
|
|
if (socksreq[0] != 5) { /* version */
|
|
failf(conn->data,
|
|
"SOCKS5 reply has wrong version, version should be 5.");
|
|
return 1;
|
|
}
|
|
if (socksreq[1] != 0) { /* Anything besides 0 is an error */
|
|
failf(conn->data,
|
|
"Can't complete SOCKS5 connection to %d.%d.%d.%d:%d. (%d)",
|
|
(unsigned char)socksreq[4], (unsigned char)socksreq[5],
|
|
(unsigned char)socksreq[6], (unsigned char)socksreq[7],
|
|
(unsigned int)ntohs(*(unsigned short*)(&socksreq[8])),
|
|
socksreq[1]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
Curl_nonblock(sock, TRUE);
|
|
return 0; /* Proxy was successful! */
|
|
}
|
|
|
|
static CURLcode ConnectPlease(struct connectdata *conn,
|
|
struct Curl_dns_entry *hostaddr,
|
|
bool *connected)
|
|
{
|
|
CURLcode result;
|
|
Curl_ipconnect *addr;
|
|
|
|
/*************************************************************
|
|
* Connect to server/proxy
|
|
*************************************************************/
|
|
result= Curl_connecthost(conn,
|
|
hostaddr,
|
|
conn->port,
|
|
&conn->firstsocket,
|
|
&addr,
|
|
connected);
|
|
if(CURLE_OK == result) {
|
|
/* All is cool, then we store the current information from the hostaddr
|
|
struct to the serv_addr, as it might be needed later. The address
|
|
returned from the function above is crucial here. */
|
|
conn->connect_addr = hostaddr;
|
|
|
|
#ifdef ENABLE_IPV6
|
|
conn->serv_addr = addr;
|
|
#else
|
|
memset((char *) &conn->serv_addr, '\0', sizeof(conn->serv_addr));
|
|
memcpy((char *)&(conn->serv_addr.sin_addr),
|
|
(struct in_addr *)addr, sizeof(struct in_addr));
|
|
conn->serv_addr.sin_family = hostaddr->addr->h_addrtype;
|
|
conn->serv_addr.sin_port = htons((unsigned short)conn->port);
|
|
#endif
|
|
|
|
if (conn->data->set.proxytype == CURLPROXY_SOCKS5) {
|
|
return handleSock5Proxy(conn->data->state.proxyuser,
|
|
conn->data->state.proxypasswd,
|
|
conn,
|
|
conn->firstsocket) ?
|
|
CURLE_COULDNT_CONNECT : CURLE_OK;
|
|
}
|
|
else if (conn->data->set.proxytype == CURLPROXY_HTTP) {
|
|
/* do nothing here. handled later. */
|
|
}
|
|
else {
|
|
failf(conn->data, "unknown proxytype option given");
|
|
return CURLE_COULDNT_CONNECT;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* ALERT! The 'dns' pointer being passed in here might be NULL at times.
|
|
*/
|
|
static void verboseconnect(struct connectdata *conn,
|
|
struct Curl_dns_entry *dns)
|
|
{
|
|
#ifdef HAVE_INET_NTOA_R
|
|
char ntoa_buf[64];
|
|
#endif
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
/* Figure out the ip-number and display the first host name it shows: */
|
|
#ifdef ENABLE_IPV6
|
|
(void)dns; /* not used in the IPv6 enabled version */
|
|
{
|
|
char hbuf[NI_MAXHOST];
|
|
#ifdef NI_WITHSCOPEID
|
|
const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
|
|
#else
|
|
const int niflags = NI_NUMERICHOST;
|
|
#endif
|
|
struct addrinfo *ai = conn->serv_addr;
|
|
|
|
if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0,
|
|
niflags)) {
|
|
snprintf(hbuf, sizeof(hbuf), "?");
|
|
}
|
|
if (ai->ai_canonname) {
|
|
infof(data, "Connected to %s (%s) port %d\n", ai->ai_canonname, hbuf,
|
|
conn->port);
|
|
} else {
|
|
infof(data, "Connected to %s port %d\n", hbuf, conn->port);
|
|
}
|
|
}
|
|
#else
|
|
{
|
|
Curl_addrinfo *hostaddr=dns?dns->addr:NULL;
|
|
struct in_addr in;
|
|
(void) memcpy(&in.s_addr, &conn->serv_addr.sin_addr, sizeof (in.s_addr));
|
|
infof(data, "Connected to %s (%s) port %d\n",
|
|
hostaddr?hostaddr->h_name:"",
|
|
#if defined(HAVE_INET_NTOA_R)
|
|
inet_ntoa_r(in, ntoa_buf, sizeof(ntoa_buf)),
|
|
#else
|
|
inet_ntoa(in),
|
|
#endif
|
|
conn->port);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* We have discovered that the TCP connection has been successful, we can now
|
|
* proceed with some action.
|
|
*
|
|
* If we're using the multi interface, this host address pointer is most
|
|
* likely NULL at this point as we can't keep the resolved info around. This
|
|
* may call for some reworking, like a reference counter in the struct or
|
|
* something. The hostaddr is not used for very much though, we have the
|
|
* 'serv_addr' field in the connectdata struct for most of it.
|
|
*/
|
|
CURLcode Curl_protocol_connect(struct connectdata *conn,
|
|
struct Curl_dns_entry *hostaddr)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
CURLcode result=CURLE_OK;
|
|
|
|
if(conn->bits.tcpconnect)
|
|
/* We already are connected, get back. This may happen when the connect
|
|
worked fine in the first call, like when we connect to a local server
|
|
or proxy. */
|
|
return CURLE_OK;
|
|
|
|
Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
|
|
|
|
if(data->set.verbose)
|
|
verboseconnect(conn, hostaddr);
|
|
|
|
if(conn->curl_connect) {
|
|
/* is there a protocol-specific connect() procedure? */
|
|
|
|
/* set start time here for timeout purposes in the
|
|
* connect procedure, it is later set again for the
|
|
* progress meter purpose */
|
|
conn->now = Curl_tvnow();
|
|
|
|
/* Call the protocol-specific connect function */
|
|
result = conn->curl_connect(conn);
|
|
}
|
|
|
|
return result; /* pass back status */
|
|
}
|
|
|
|
static CURLcode CreateConnection(struct SessionHandle *data,
|
|
struct connectdata **in_connect)
|
|
{
|
|
char *tmp;
|
|
char *buf;
|
|
CURLcode result=CURLE_OK;
|
|
char resumerange[40]="";
|
|
struct connectdata *conn;
|
|
struct connectdata *conn_temp;
|
|
int urllen;
|
|
struct Curl_dns_entry *hostaddr;
|
|
#ifdef HAVE_ALARM
|
|
unsigned int prev_alarm=0;
|
|
#endif
|
|
char endbracket;
|
|
|
|
#ifdef HAVE_SIGACTION
|
|
struct sigaction keep_sigact; /* store the old struct here */
|
|
bool keep_copysig=FALSE; /* did copy it? */
|
|
#else
|
|
#ifdef HAVE_SIGNAL
|
|
void *keep_sigact; /* store the old handler here */
|
|
#endif
|
|
#endif
|
|
|
|
/*************************************************************
|
|
* Check input data
|
|
*************************************************************/
|
|
|
|
if(!data->change.url)
|
|
return CURLE_URL_MALFORMAT;
|
|
|
|
/* First, split up the current URL in parts so that we can use the
|
|
parts for checking against the already present connections. In order
|
|
to not have to modify everything at once, we allocate a temporary
|
|
connection data struct and fill in for comparison purposes. */
|
|
|
|
conn = (struct connectdata *)malloc(sizeof(struct connectdata));
|
|
if(!conn) {
|
|
*in_connect = NULL; /* clear the pointer */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
/* We must set the return variable as soon as possible, so that our
|
|
parent can cleanup any possible allocs we may have done before
|
|
any failure */
|
|
*in_connect = conn;
|
|
|
|
/* we have to init the struct */
|
|
memset(conn, 0, sizeof(struct connectdata));
|
|
|
|
/* and we setup a few fields in case we end up actually using this struct */
|
|
conn->data = data; /* remember our daddy */
|
|
conn->firstsocket = -1; /* no file descriptor */
|
|
conn->secondarysocket = -1; /* no file descriptor */
|
|
conn->connectindex = -1; /* no index */
|
|
conn->bits.httpproxy = (bool)((data->change.proxy && *data->change.proxy &&
|
|
(data->set.proxytype == CURLPROXY_HTTP))?
|
|
TRUE:FALSE); /* http proxy or not */
|
|
conn->bits.use_range = (bool)(data->set.set_range?TRUE:FALSE);
|
|
/* range status */
|
|
conn->range = data->set.set_range; /* clone the range setting */
|
|
conn->resume_from = data->set.set_resume_from; /* inherite resume_from */
|
|
|
|
/* Default protocol-independent behavior doesn't support persistant
|
|
connections, so we set this to force-close. Protocols that support
|
|
this need to set this to FALSE in their "curl_do" functions. */
|
|
conn->bits.close = (bool)TRUE;
|
|
|
|
/* inherite initial knowledge from the data struct */
|
|
conn->bits.user_passwd = (bool)(data->set.userpwd?TRUE:FALSE);
|
|
conn->bits.proxy_user_passwd = (bool)(data->set.proxyuserpwd?TRUE:FALSE);
|
|
|
|
/* maxdownload must be -1 on init, as 0 is a valid value! */
|
|
conn->maxdownload = -1; /* might have been used previously! */
|
|
|
|
/* Store creation time to help future close decision making */
|
|
conn->created = Curl_tvnow();
|
|
|
|
/* Set the start time temporary to this creation time to allow easier
|
|
timeout checks before the transfer has started for real. The start time
|
|
is later set "for real" using Curl_pgrsStartNow(). */
|
|
conn->data->progress.start = conn->created;
|
|
|
|
conn->bits.upload_chunky = (bool)(
|
|
((conn->protocol&PROT_HTTP) &&
|
|
data->set.upload &&
|
|
(data->set.infilesize == -1) &&
|
|
(data->set.httpversion != CURL_HTTP_VERSION_1_0))?
|
|
/* HTTP, upload, unknown file size and not HTTP 1.0 */
|
|
TRUE:
|
|
/* else, no chunky upload */
|
|
FALSE);
|
|
|
|
conn->fread = data->set.fread;
|
|
conn->fread_in = data->set.in;
|
|
|
|
/***********************************************************
|
|
* We need to allocate memory to store the path in. We get the size of the
|
|
* full URL to be sure, and we need to make it at least 256 bytes since
|
|
* other parts of the code will rely on this fact
|
|
***********************************************************/
|
|
#define LEAST_PATH_ALLOC 256
|
|
urllen=(int)strlen(data->change.url);
|
|
if(urllen < LEAST_PATH_ALLOC)
|
|
urllen=LEAST_PATH_ALLOC;
|
|
|
|
conn->path=(char *)malloc(urllen);
|
|
if(NULL == conn->path)
|
|
return CURLE_OUT_OF_MEMORY; /* really bad error */
|
|
|
|
/*************************************************************
|
|
* Parse the URL.
|
|
*
|
|
* We need to parse the url even when using the proxy, because we will need
|
|
* the hostname and port in case we are trying to SSL connect through the
|
|
* proxy -- and we don't know if we will need to use SSL until we parse the
|
|
* url ...
|
|
************************************************************/
|
|
if((2 == sscanf(data->change.url, "%64[^:]://%[^\n]",
|
|
conn->protostr,
|
|
conn->path)) && strequal(conn->protostr, "file")) {
|
|
/*
|
|
* we deal with file://<host>/<path> differently since it supports no
|
|
* hostname other than "localhost" and "127.0.0.1", which is unique among
|
|
* the URL protocols specified in RFC 1738
|
|
*/
|
|
if(conn->path[0] != '/') {
|
|
/* the URL included a host name, we ignore host names in file:// URLs
|
|
as the standards don't define what to do with them */
|
|
char *ptr=strchr(conn->path, '/');
|
|
if(ptr) {
|
|
/* there was a slash present
|
|
|
|
RFC1738 (section 3.1, page 5) says:
|
|
|
|
The rest of the locator consists of data specific to the scheme,
|
|
and is known as the "url-path". It supplies the details of how the
|
|
specified resource can be accessed. Note that the "/" between the
|
|
host (or port) and the url-path is NOT part of the url-path.
|
|
|
|
As most agents use file://localhost/foo to get '/foo' although the
|
|
slash preceeding foo is a separator and not a slash for the path,
|
|
a URL as file://localhost//foo must be valid as well, to refer to
|
|
the same file with an absolute path.
|
|
*/
|
|
|
|
if(ptr[1] && ('/' == ptr[1]))
|
|
/* if there was two slashes, we skip the first one as that is then
|
|
used truly as a separator */
|
|
ptr++;
|
|
|
|
strcpy(conn->path, ptr);
|
|
}
|
|
}
|
|
|
|
strcpy(conn->protostr, "file"); /* store protocol string lowercase */
|
|
}
|
|
else {
|
|
/* Set default host and default path */
|
|
strcpy(conn->gname, "curl.haxx.se");
|
|
strcpy(conn->path, "/");
|
|
|
|
if (2 > sscanf(data->change.url,
|
|
"%64[^\n:]://%512[^\n/]%[^\n]",
|
|
conn->protostr, conn->gname, conn->path)) {
|
|
|
|
/*
|
|
* The URL was badly formatted, let's try the browser-style _without_
|
|
* protocol specified like 'http://'.
|
|
*/
|
|
if((1 > sscanf(data->change.url, "%512[^\n/]%[^\n]",
|
|
conn->gname, conn->path)) ) {
|
|
/*
|
|
* We couldn't even get this format.
|
|
*/
|
|
failf(data, "<url> malformed");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/*
|
|
* Since there was no protocol part specified, we guess what protocol it
|
|
* is based on the first letters of the server name.
|
|
*/
|
|
|
|
/* Note: if you add a new protocol, please update the list in
|
|
* lib/version.c too! */
|
|
|
|
if(checkprefix("FTP", conn->gname)) {
|
|
strcpy(conn->protostr, "ftp");
|
|
}
|
|
else if(checkprefix("GOPHER", conn->gname))
|
|
strcpy(conn->protostr, "gopher");
|
|
#ifdef USE_SSLEAY
|
|
else if(checkprefix("HTTPS", conn->gname))
|
|
strcpy(conn->protostr, "https");
|
|
else if(checkprefix("FTPS", conn->gname))
|
|
strcpy(conn->protostr, "ftps");
|
|
#endif /* USE_SSLEAY */
|
|
else if(checkprefix("TELNET", conn->gname))
|
|
strcpy(conn->protostr, "telnet");
|
|
else if (checkprefix("DICT", conn->gname))
|
|
strcpy(conn->protostr, "DICT");
|
|
else if (checkprefix("LDAP", conn->gname))
|
|
strcpy(conn->protostr, "LDAP");
|
|
else {
|
|
strcpy(conn->protostr, "http");
|
|
}
|
|
|
|
conn->protocol |= PROT_MISSING; /* not given in URL */
|
|
}
|
|
}
|
|
|
|
buf = data->state.buffer; /* this is our buffer */
|
|
|
|
/*
|
|
* So if the URL was A://B/C,
|
|
* conn->protostr is A
|
|
* conn->gname is B
|
|
* conn->path is /C
|
|
*/
|
|
|
|
/*************************************************************
|
|
* Take care of proxy authentication stuff
|
|
*************************************************************/
|
|
if(conn->bits.proxy_user_passwd) {
|
|
data->state.proxyuser[0] =0;
|
|
data->state.proxypasswd[0]=0;
|
|
|
|
if(*data->set.proxyuserpwd != ':') {
|
|
/* the name is given, get user+password */
|
|
sscanf(data->set.proxyuserpwd, "%127[^:]:%127[^\n]",
|
|
data->state.proxyuser, data->state.proxypasswd);
|
|
}
|
|
else
|
|
/* no name given, get the password only */
|
|
sscanf(data->set.proxyuserpwd+1, "%127[^\n]", data->state.proxypasswd);
|
|
|
|
/* check for password, if no ask for one */
|
|
if( !data->state.proxypasswd[0] ) {
|
|
if(data->set.fpasswd( data->set.passwd_client,
|
|
"proxy password:",
|
|
data->state.proxypasswd,
|
|
sizeof(data->state.proxypasswd))) {
|
|
failf(data, "Bad password from password callback");
|
|
return CURLE_BAD_PASSWORD_ENTERED;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/*************************************************************
|
|
* Set a few convenience pointers
|
|
*************************************************************/
|
|
conn->name = conn->gname;
|
|
conn->ppath = conn->path;
|
|
conn->hostname = conn->name;
|
|
|
|
|
|
/*************************************************************
|
|
* Detect what (if any) proxy to use
|
|
*************************************************************/
|
|
if(!data->change.proxy) {
|
|
/* If proxy was not specified, we check for default proxy environment
|
|
* variables, to enable i.e Lynx compliance:
|
|
*
|
|
* http_proxy=http://some.server.dom:port/
|
|
* https_proxy=http://some.server.dom:port/
|
|
* ftp_proxy=http://some.server.dom:port/
|
|
* gopher_proxy=http://some.server.dom:port/
|
|
* no_proxy=domain1.dom,host.domain2.dom
|
|
* (a comma-separated list of hosts which should
|
|
* not be proxied, or an asterisk to override
|
|
* all proxy variables)
|
|
* all_proxy=http://some.server.dom:port/
|
|
* (seems to exist for the CERN www lib. Probably
|
|
* the first to check for.)
|
|
*
|
|
* For compatibility, the all-uppercase versions of these variables are
|
|
* checked if the lowercase versions don't exist.
|
|
*/
|
|
char *no_proxy=NULL;
|
|
char *no_proxy_tok_buf;
|
|
char *proxy=NULL;
|
|
char proxy_env[128];
|
|
|
|
no_proxy=curl_getenv("no_proxy");
|
|
if(!no_proxy)
|
|
no_proxy=curl_getenv("NO_PROXY");
|
|
|
|
if(!no_proxy || !strequal("*", no_proxy)) {
|
|
/* NO_PROXY wasn't specified or it wasn't just an asterisk */
|
|
char *nope;
|
|
|
|
nope=no_proxy?strtok_r(no_proxy, ", ", &no_proxy_tok_buf):NULL;
|
|
while(nope) {
|
|
unsigned int namelen;
|
|
char *endptr = strchr(conn->name, ':');
|
|
if(endptr)
|
|
namelen=(unsigned int)(endptr-conn->name);
|
|
else
|
|
namelen=(unsigned int)strlen(conn->name);
|
|
|
|
if(strlen(nope) <= namelen) {
|
|
char *checkn=
|
|
conn->name + namelen - strlen(nope);
|
|
if(checkprefix(nope, checkn)) {
|
|
/* no proxy for this host! */
|
|
break;
|
|
}
|
|
}
|
|
nope=strtok_r(NULL, ", ", &no_proxy_tok_buf);
|
|
}
|
|
if(!nope) {
|
|
/* It was not listed as without proxy */
|
|
char *protop = conn->protostr;
|
|
char *envp = proxy_env;
|
|
char *prox;
|
|
|
|
/* Now, build <protocol>_proxy and check for such a one to use */
|
|
while(*protop)
|
|
*envp++ = (char)tolower(*protop++);
|
|
|
|
/* append _proxy */
|
|
strcpy(envp, "_proxy");
|
|
|
|
/* read the protocol proxy: */
|
|
prox=curl_getenv(proxy_env);
|
|
|
|
/*
|
|
* We don't try the uppercase version of HTTP_PROXY because of
|
|
* security reasons:
|
|
*
|
|
* When curl is used in a webserver application
|
|
* environment (cgi or php), this environment variable can
|
|
* be controlled by the web server user by setting the
|
|
* http header 'Proxy:' to some value.
|
|
*
|
|
* This can cause 'internal' http/ftp requests to be
|
|
* arbitrarily redirected by any external attacker.
|
|
*/
|
|
if(!prox && !strequal("http_proxy", proxy_env)) {
|
|
/* There was no lowercase variable, try the uppercase version: */
|
|
for(envp = proxy_env; *envp; envp++)
|
|
*envp = (char)toupper(*envp);
|
|
prox=curl_getenv(proxy_env);
|
|
}
|
|
|
|
if(prox && *prox) { /* don't count "" strings */
|
|
proxy = prox; /* use this */
|
|
}
|
|
else {
|
|
proxy = curl_getenv("all_proxy"); /* default proxy to use */
|
|
if(!proxy)
|
|
proxy=curl_getenv("ALL_PROXY");
|
|
}
|
|
|
|
if(proxy && *proxy) {
|
|
/* we have a proxy here to set */
|
|
data->change.proxy = proxy;
|
|
data->change.proxy_alloc=TRUE; /* this needs to be freed later */
|
|
conn->bits.httpproxy = TRUE;
|
|
}
|
|
} /* if (!nope) - it wasn't specified non-proxy */
|
|
} /* NO_PROXY wasn't specified or '*' */
|
|
if(no_proxy)
|
|
free(no_proxy);
|
|
} /* if not using proxy */
|
|
|
|
/*************************************************************
|
|
* No protocol part in URL was used, add it!
|
|
*************************************************************/
|
|
if(conn->protocol&PROT_MISSING) {
|
|
/* We're guessing prefixes here and if we're told to use a proxy or if
|
|
we're gonna follow a Location: later or... then we need the protocol
|
|
part added so that we have a valid URL. */
|
|
char *reurl;
|
|
|
|
reurl = aprintf("%s://%s", conn->protostr, data->change.url);
|
|
|
|
if(!reurl)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
data->change.url = reurl;
|
|
data->change.url_alloc = TRUE; /* free this later */
|
|
conn->protocol &= ~PROT_MISSING; /* switch that one off again */
|
|
}
|
|
|
|
#ifndef CURL_DISABLE_HTTP
|
|
/************************************************************
|
|
* RESUME on a HTTP page is a tricky business. First, let's just check that
|
|
* 'range' isn't used, then set the range parameter and leave the resume as
|
|
* it is to inform about this situation for later use. We will then
|
|
* "attempt" to resume, and if we're talking to a HTTP/1.1 (or later)
|
|
* server, we will get the document resumed. If we talk to a HTTP/1.0
|
|
* server, we just fail since we can't rewind the file writing from within
|
|
* this function.
|
|
***********************************************************/
|
|
if(conn->resume_from) {
|
|
if(!conn->bits.use_range) {
|
|
/* if it already was in use, we just skip this */
|
|
snprintf(resumerange, sizeof(resumerange), "%d-", conn->resume_from);
|
|
conn->range=strdup(resumerange); /* tell ourselves to fetch this range */
|
|
conn->bits.rangestringalloc = TRUE; /* mark as allocated */
|
|
conn->bits.use_range = 1; /* switch on range usage */
|
|
}
|
|
}
|
|
#endif
|
|
/*************************************************************
|
|
* Setup internals depending on protocol
|
|
*************************************************************/
|
|
|
|
if (strequal(conn->protostr, "HTTP")) {
|
|
#ifndef CURL_DISABLE_HTTP
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_HTTP;
|
|
conn->remote_port = PORT_HTTP;
|
|
conn->protocol |= PROT_HTTP;
|
|
conn->curl_do = Curl_http;
|
|
conn->curl_do_more = NULL;
|
|
conn->curl_done = Curl_http_done;
|
|
conn->curl_connect = Curl_http_connect;
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with HTTP disabled, http: not supported!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif
|
|
}
|
|
else if (strequal(conn->protostr, "HTTPS")) {
|
|
#if defined(USE_SSLEAY) && !defined(CURL_DISABLE_HTTP)
|
|
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_HTTPS;
|
|
conn->remote_port = PORT_HTTPS;
|
|
conn->protocol |= PROT_HTTP|PROT_HTTPS|PROT_SSL;
|
|
|
|
conn->curl_do = Curl_http;
|
|
conn->curl_do_more = NULL;
|
|
conn->curl_done = Curl_http_done;
|
|
conn->curl_connect = Curl_http_connect;
|
|
|
|
#else /* USE_SSLEAY */
|
|
failf(data, LIBCURL_NAME
|
|
" was built with SSL disabled, https: not supported!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif /* !USE_SSLEAY */
|
|
}
|
|
else if (strequal(conn->protostr, "GOPHER")) {
|
|
#ifndef CURL_DISABLE_GOPHER
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_GOPHER;
|
|
conn->remote_port = PORT_GOPHER;
|
|
/* Skip /<item-type>/ in path if present */
|
|
if (isdigit((int)conn->path[1])) {
|
|
conn->ppath = strchr(&conn->path[1], '/');
|
|
if (conn->ppath == NULL)
|
|
conn->ppath = conn->path;
|
|
}
|
|
conn->protocol |= PROT_GOPHER;
|
|
conn->curl_do = Curl_http;
|
|
conn->curl_do_more = NULL;
|
|
conn->curl_done = Curl_http_done;
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with GOPHER disabled, gopher: not supported!");
|
|
#endif
|
|
}
|
|
else if(strequal(conn->protostr, "FTP") ||
|
|
strequal(conn->protostr, "FTPS")) {
|
|
|
|
/* MN 06/07/02 */
|
|
#ifndef CURL_DISABLE_FTP
|
|
char *type;
|
|
|
|
if(strequal(conn->protostr, "FTPS")) {
|
|
#ifdef USE_SSLEAY
|
|
conn->protocol |= PROT_FTPS|PROT_SSL;
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with SSL disabled, ftps: not supported!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif /* !USE_SSLEAY */
|
|
}
|
|
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_FTP;
|
|
conn->remote_port = PORT_FTP;
|
|
conn->protocol |= PROT_FTP;
|
|
|
|
if(data->change.proxy &&
|
|
*data->change.proxy &&
|
|
!data->set.tunnel_thru_httpproxy) {
|
|
/* Unless we have asked to tunnel ftp operations through the proxy, we
|
|
switch and use HTTP operations only */
|
|
if(conn->protocol & PROT_FTPS) {
|
|
/* FTPS is a hacked protocol and does not work through your
|
|
ordinary http proxy! */
|
|
failf(data, "ftps does not work through http proxy!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
}
|
|
#ifndef CURL_DISABLE_HTTP
|
|
conn->curl_do = Curl_http;
|
|
conn->curl_done = Curl_http_done;
|
|
#else
|
|
failf(data, "FTP over http proxy requires HTTP support built-in!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif
|
|
}
|
|
else {
|
|
conn->curl_do = Curl_ftp;
|
|
conn->curl_do_more = Curl_ftp_nextconnect;
|
|
conn->curl_done = Curl_ftp_done;
|
|
conn->curl_connect = Curl_ftp_connect;
|
|
conn->curl_disconnect = Curl_ftp_disconnect;
|
|
}
|
|
|
|
conn->ppath++; /* don't include the initial slash */
|
|
|
|
/* FTP URLs support an extension like ";type=<typecode>" that
|
|
* we'll try to get now! */
|
|
type=strstr(conn->ppath, ";type=");
|
|
if(!type) {
|
|
type=strstr(conn->gname, ";type=");
|
|
}
|
|
if(type) {
|
|
char command;
|
|
*type=0; /* it was in the middle of the hostname */
|
|
command = (char)toupper(type[6]);
|
|
switch(command) {
|
|
case 'A': /* ASCII mode */
|
|
data->set.ftp_ascii = 1;
|
|
break;
|
|
case 'D': /* directory mode */
|
|
data->set.ftp_list_only = 1;
|
|
break;
|
|
case 'I': /* binary mode */
|
|
default:
|
|
/* switch off ASCII */
|
|
data->set.ftp_ascii = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* MN 06/07/02 */
|
|
#else /* CURL_DISABLE_FTP */
|
|
failf(data, LIBCURL_NAME
|
|
" was built with FTP disabled, ftp/ftps: not supported!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif
|
|
}
|
|
else if(strequal(conn->protostr, "TELNET")) {
|
|
#ifndef CURL_DISABLE_TELNET
|
|
/* telnet testing factory */
|
|
conn->protocol |= PROT_TELNET;
|
|
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port: PORT_TELNET;
|
|
conn->remote_port = PORT_TELNET;
|
|
conn->curl_do = Curl_telnet;
|
|
conn->curl_done = Curl_telnet_done;
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with TELNET disabled!");
|
|
#endif
|
|
}
|
|
else if (strequal(conn->protostr, "DICT")) {
|
|
#ifndef CURL_DISABLE_DICT
|
|
conn->protocol |= PROT_DICT;
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_DICT;
|
|
conn->remote_port = PORT_DICT;
|
|
conn->curl_do = Curl_dict;
|
|
conn->curl_done = NULL; /* no DICT-specific done */
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with DICT disabled!");
|
|
#endif
|
|
}
|
|
else if (strequal(conn->protostr, "LDAP")) {
|
|
#ifndef CURL_DISABLE_LDAP
|
|
conn->protocol |= PROT_LDAP;
|
|
conn->port = (data->set.use_port && data->state.allow_port)?
|
|
data->set.use_port:PORT_LDAP;
|
|
conn->remote_port = PORT_LDAP;
|
|
conn->curl_do = Curl_ldap;
|
|
conn->curl_done = NULL; /* no LDAP-specific done */
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with LDAP disabled!");
|
|
#endif
|
|
}
|
|
else if (strequal(conn->protostr, "FILE")) {
|
|
#ifndef CURL_DISABLE_FILE
|
|
conn->protocol |= PROT_FILE;
|
|
|
|
conn->curl_do = Curl_file;
|
|
/* no done() function */
|
|
|
|
/* anyway, this is supposed to be the connect function so we better
|
|
at least check that the file is present here! */
|
|
result = Curl_file_connect(conn);
|
|
|
|
/* Setup a "faked" transfer that'll do nothing */
|
|
if(CURLE_OK == result) {
|
|
conn->bits.tcpconnect = TRUE; /* we are "connected */
|
|
result = Curl_Transfer(conn, -1, -1, FALSE, NULL, /* no download */
|
|
-1, NULL); /* no upload */
|
|
}
|
|
|
|
return result;
|
|
#else
|
|
failf(data, LIBCURL_NAME
|
|
" was built with FILE disabled!");
|
|
#endif
|
|
}
|
|
else {
|
|
/* We fell through all checks and thus we don't support the specified
|
|
protocol */
|
|
failf(data, "Unsupported protocol: %s", conn->protostr);
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
}
|
|
|
|
/*************************************************************
|
|
* Figure out the remote port number
|
|
*
|
|
* No matter if we use a proxy or not, we have to figure out the remote
|
|
* port number of various reasons.
|
|
*
|
|
* To be able to detect port number flawlessly, we must not confuse them
|
|
* IPv6-specified addresses in the [0::1] style. (RFC2732)
|
|
*
|
|
* The conn->name is currently [user:passwd@]host[:port] where host could
|
|
* be a hostname, IPv4 address or IPv6 address.
|
|
*************************************************************/
|
|
if((1 == sscanf(conn->name, "[%*39[0-9a-fA-F:.]%c", &endbracket)) &&
|
|
(']' == endbracket)) {
|
|
/* this is a RFC2732-style specified IP-address */
|
|
conn->bits.ipv6_ip = TRUE;
|
|
|
|
conn->name++; /* pass the starting bracket */
|
|
conn->hostname++;
|
|
tmp = strchr(conn->name, ']');
|
|
*tmp = 0; /* zero terminate */
|
|
tmp++; /* pass the ending bracket */
|
|
if(':' != *tmp)
|
|
tmp = NULL; /* no port number available */
|
|
}
|
|
else
|
|
tmp = strrchr(conn->name, ':');
|
|
|
|
if (tmp) {
|
|
char *rest;
|
|
unsigned long port;
|
|
|
|
port=strtoul(tmp+1, &rest, 10); /* Port number must be decimal */
|
|
|
|
if (rest != (tmp+1) && *rest == '\0') {
|
|
/* The colon really did have only digits after it,
|
|
* so it is either a port number or a mistake */
|
|
|
|
if (port > 0xffff) { /* Single unix standard says port numbers are
|
|
* 16 bits long */
|
|
failf(data, "Port number too large: %lu", port);
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
*tmp = '\0'; /* cut off the name there */
|
|
conn->remote_port = (unsigned short)port;
|
|
}
|
|
}
|
|
|
|
if(data->change.proxy && *data->change.proxy) {
|
|
/* If this is supposed to use a proxy, we need to figure out the proxy
|
|
host name name, so that we can re-use an existing connection
|
|
that may exist registered to the same proxy host. */
|
|
|
|
char *prox_portno;
|
|
char *endofprot;
|
|
|
|
/* We need to make a duplicate of the proxy so that we can modify the
|
|
string safely. */
|
|
char *proxydup=strdup(data->change.proxy);
|
|
|
|
/* We use 'proxyptr' to point to the proxy name from now on... */
|
|
char *proxyptr=proxydup;
|
|
|
|
if(NULL == proxydup) {
|
|
failf(data, "memory shortage");
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
/* Daniel Dec 10, 1998:
|
|
We do the proxy host string parsing here. We want the host name and the
|
|
port name. Accept a protocol:// prefix, even though it should just be
|
|
ignored. */
|
|
|
|
/* 1. skip the protocol part if present */
|
|
endofprot=strstr(proxyptr, "://");
|
|
if(endofprot) {
|
|
proxyptr = endofprot+3;
|
|
}
|
|
|
|
/* allow user to specify proxy.server.com:1080 if desired */
|
|
prox_portno = strchr (proxyptr, ':');
|
|
if (prox_portno) {
|
|
*prox_portno = 0x0; /* cut off number from host name */
|
|
prox_portno ++;
|
|
/* now set the local port number */
|
|
conn->port = atoi(prox_portno);
|
|
}
|
|
else if(data->set.proxyport) {
|
|
/* None given in the proxy string, then get the default one if it is
|
|
given */
|
|
conn->port = data->set.proxyport;
|
|
}
|
|
|
|
/* now, clone the cleaned proxy host name */
|
|
conn->proxyhost = strdup(proxyptr);
|
|
|
|
free(proxydup); /* free the duplicate pointer and not the modified */
|
|
}
|
|
|
|
/*************************************************************
|
|
* Take care of user and password authentication stuff
|
|
*************************************************************/
|
|
|
|
/*
|
|
* Inputs: data->set.userpwd (CURLOPT_USERPWD)
|
|
* data->set.fpasswd (CURLOPT_PASSWDFUNCTION)
|
|
* data->set.use_netrc (CURLOPT_NETRC)
|
|
* conn->hostname
|
|
* netrc file
|
|
* hard-coded defaults
|
|
*
|
|
* Outputs: (almost :- all currently undefined)
|
|
* conn->bits.user_passwd - non-zero if non-default passwords exist
|
|
* conn->state.user - non-zero length if defined
|
|
* conn->state.passwd - ditto
|
|
* conn->hostname - remove user name and password
|
|
*/
|
|
|
|
/* At this point, we're hoping all the other special cases have
|
|
* been taken care of, so conn->hostname is at most
|
|
* [user[:password]]@]hostname
|
|
*
|
|
* We need somewhere to put the embedded details, so do that first.
|
|
*/
|
|
|
|
data->state.user[0] =0; /* to make everything well-defined */
|
|
data->state.passwd[0]=0;
|
|
|
|
if (conn->protocol & (PROT_FTP|PROT_HTTP)) {
|
|
/* This is a FTP or HTTP URL, we will now try to extract the possible
|
|
* user+password pair in a string like:
|
|
* ftp://user:password@ftp.my.site:8021/README */
|
|
char *ptr=strchr(conn->name, '@');
|
|
char *userpass = conn->name;
|
|
if(ptr != NULL) {
|
|
/* there's a user+password given here, to the left of the @ */
|
|
|
|
conn->name = conn->hostname = ++ptr;
|
|
|
|
/* So the hostname is sane. Only bother interpreting the
|
|
* results if we could care. It could still be wasted
|
|
* work because it might be overtaken by the programmatically
|
|
* set user/passwd, but doing that first adds more cases here :-(
|
|
*/
|
|
|
|
if (data->set.use_netrc != CURL_NETRC_REQUIRED) {
|
|
/* We could use the one in the URL */
|
|
|
|
conn->bits.user_passwd = 1; /* enable user+password */
|
|
|
|
if(*userpass != ':') {
|
|
/* the name is given, get user+password */
|
|
sscanf(userpass, "%127[^:@]:%127[^@]",
|
|
data->state.user, data->state.passwd);
|
|
}
|
|
else
|
|
/* no name given, get the password only */
|
|
sscanf(userpass, ":%127[^@]", data->state.passwd);
|
|
|
|
/* we have set the password */
|
|
data->state.passwdgiven = TRUE;
|
|
|
|
if(data->state.user[0]) {
|
|
char *newname=curl_unescape(data->state.user, 0);
|
|
if(strlen(newname) < sizeof(data->state.user)) {
|
|
strcpy(data->state.user, newname);
|
|
}
|
|
/* if the new name is longer than accepted, then just use
|
|
the unconverted name, it'll be wrong but what the heck */
|
|
free(newname);
|
|
}
|
|
if (data->state.passwd[0]) {
|
|
/* we have a password found in the URL, decode it! */
|
|
char *newpasswd=curl_unescape(data->state.passwd, 0);
|
|
if(strlen(newpasswd) < sizeof(data->state.passwd)) {
|
|
strcpy(data->state.passwd, newpasswd);
|
|
}
|
|
free(newpasswd);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Programmatically set password:
|
|
* - always applies, if available
|
|
* - takes precedence over the values we just set above
|
|
* so scribble it over the top.
|
|
* User-supplied passwords are assumed not to need unescaping.
|
|
*
|
|
* user_password is set in "inherite initial knowledge' above,
|
|
* so it doesn't have to be set in this block
|
|
*/
|
|
if (data->set.userpwd != NULL) {
|
|
if(*data->set.userpwd != ':') {
|
|
/* the name is given, get user+password */
|
|
sscanf(data->set.userpwd, "%127[^:]:%127[^\n]",
|
|
data->state.user, data->state.passwd);
|
|
if(strchr(data->set.userpwd, ':'))
|
|
/* a colon means the password was given, even if blank */
|
|
data->state.passwdgiven = TRUE;
|
|
}
|
|
else
|
|
/* no name given, starts with a colon, get the password only */
|
|
sscanf(data->set.userpwd+1, "%127[^\n]", data->state.passwd);
|
|
}
|
|
|
|
if (data->set.use_netrc != CURL_NETRC_IGNORED &&
|
|
!data->state.passwdgiven) { /* need passwd */
|
|
if(Curl_parsenetrc(conn->hostname,
|
|
data->state.user,
|
|
data->state.passwd)) {
|
|
infof(data, "Couldn't find host %s in the .netrc file, using defaults",
|
|
conn->hostname);
|
|
} else
|
|
conn->bits.user_passwd = 1; /* enable user+password */
|
|
}
|
|
|
|
/* if we have a user but no password, ask for one */
|
|
if(conn->bits.user_passwd && !data->state.passwdgiven ) {
|
|
if(data->set.fpasswd(data->set.passwd_client,
|
|
"password:", data->state.passwd,
|
|
sizeof(data->state.passwd)))
|
|
return CURLE_BAD_PASSWORD_ENTERED;
|
|
}
|
|
|
|
/* So we could have a password but no user; that's just too bad. */
|
|
|
|
/* If our protocol needs a password and we have none, use the defaults */
|
|
if ( (conn->protocol & (PROT_FTP|PROT_HTTP)) &&
|
|
!conn->bits.user_passwd &&
|
|
!data->state.passwdgiven) {
|
|
|
|
strcpy(data->state.user, CURL_DEFAULT_USER);
|
|
strcpy(data->state.passwd, CURL_DEFAULT_PASSWORD);
|
|
|
|
/* This is the default password, so DON'T set conn->bits.user_passwd */
|
|
}
|
|
|
|
/*************************************************************
|
|
* Check the current list of connections to see if we can
|
|
* re-use an already existing one or if we have to create a
|
|
* new one.
|
|
*************************************************************/
|
|
|
|
/* reuse_fresh is set TRUE if we are told to use a fresh connection
|
|
by force */
|
|
if(!data->set.reuse_fresh &&
|
|
ConnectionExists(data, conn, &conn_temp)) {
|
|
/*
|
|
* We already have a connection for this, we got the former connection
|
|
* in the conn_temp variable and thus we need to cleanup the one we
|
|
* just allocated before we can move along and use the previously
|
|
* existing one.
|
|
*/
|
|
struct connectdata *old_conn = conn;
|
|
char *path = old_conn->path; /* setup the current path pointer properly */
|
|
char *ppath = old_conn->ppath; /* this is the modified path pointer */
|
|
if(old_conn->proxyhost)
|
|
free(old_conn->proxyhost);
|
|
conn = conn_temp; /* use this connection from now on */
|
|
|
|
/* If we speak over a proxy, we need to copy the host name too, as it
|
|
might be another remote host even when re-using a connection */
|
|
strcpy(conn->gname, old_conn->gname); /* safe strcpy() */
|
|
|
|
/* we need these pointers if we speak over a proxy */
|
|
conn->hostname = conn->gname;
|
|
conn->name = &conn->gname[old_conn->name - old_conn->gname];
|
|
|
|
free(conn->path); /* free the previously allocated path pointer */
|
|
|
|
/* 'path' points to the allocated data, 'ppath' may have been advanced
|
|
to point somewhere within the 'path' area. */
|
|
conn->path = path;
|
|
conn->ppath = ppath;
|
|
|
|
/* re-use init */
|
|
conn->bits.reuse = TRUE; /* yes, we're re-using here */
|
|
conn->bits.chunk = FALSE; /* always assume not chunked unless told
|
|
otherwise */
|
|
conn->maxdownload = -1; /* might have been used previously! */
|
|
|
|
free(old_conn); /* we don't need this anymore */
|
|
|
|
/*
|
|
* If we're doing a resumed transfer, we need to setup our stuff
|
|
* properly.
|
|
*/
|
|
conn->resume_from = data->set.set_resume_from;
|
|
if (conn->resume_from) {
|
|
snprintf(resumerange, sizeof(resumerange), "%d-", conn->resume_from);
|
|
if (conn->bits.rangestringalloc == TRUE)
|
|
free(conn->range);
|
|
|
|
/* tell ourselves to fetch this range */
|
|
conn->range = strdup(resumerange);
|
|
conn->bits.use_range = TRUE; /* enable range download */
|
|
conn->bits.rangestringalloc = TRUE; /* mark range string allocated */
|
|
}
|
|
else if (data->set.set_range) {
|
|
/* There is a range, but is not a resume, useful for random ftp access */
|
|
conn->range = strdup(data->set.set_range);
|
|
conn->bits.rangestringalloc = TRUE; /* mark range string allocated */
|
|
conn->bits.use_range = TRUE; /* enable range download */
|
|
}
|
|
|
|
*in_connect = conn; /* return this instead! */
|
|
|
|
infof(data, "Re-using existing connection! (#%d)\n", conn->connectindex);
|
|
}
|
|
else {
|
|
/*
|
|
* This is a brand new connection, so let's store it in the connection
|
|
* cache of ours!
|
|
*/
|
|
ConnectionStore(data, conn);
|
|
}
|
|
|
|
/*************************************************************
|
|
* Set timeout if that is being used
|
|
*************************************************************/
|
|
if((data->set.timeout || data->set.connecttimeout) && !data->set.no_signal) {
|
|
/*************************************************************
|
|
* Set signal handler to catch SIGALRM
|
|
* Store the old value to be able to set it back later!
|
|
*************************************************************/
|
|
|
|
#ifdef HAVE_SIGACTION
|
|
struct sigaction sigact;
|
|
sigaction(SIGALRM, NULL, &sigact);
|
|
keep_sigact = sigact;
|
|
keep_copysig = TRUE; /* yes, we have a copy */
|
|
sigact.sa_handler = alarmfunc;
|
|
#ifdef SA_RESTART
|
|
/* HPUX doesn't have SA_RESTART but defaults to that behaviour! */
|
|
sigact.sa_flags &= ~SA_RESTART;
|
|
#endif
|
|
/* now set the new struct */
|
|
sigaction(SIGALRM, &sigact, NULL);
|
|
#else
|
|
/* no sigaction(), revert to the much lamer signal() */
|
|
#ifdef HAVE_SIGNAL
|
|
keep_sigact = signal(SIGALRM, alarmfunc);
|
|
#endif
|
|
#endif
|
|
|
|
/* We set the timeout on the name resolving phase first, separately from
|
|
* the download/upload part to allow a maximum time on everything. This is
|
|
* a signal-based timeout, why it won't work and shouldn't be used in
|
|
* multi-threaded environments. */
|
|
|
|
#ifdef HAVE_ALARM
|
|
/* alarm() makes a signal get sent when the timeout fires off, and that
|
|
will abort system calls */
|
|
prev_alarm = alarm(data->set.connecttimeout?
|
|
data->set.connecttimeout:
|
|
data->set.timeout);
|
|
/* We can expect the conn->created time to be "now", as that was just
|
|
recently set in the beginning of this function and nothing slow
|
|
has been done since then until now. */
|
|
#endif
|
|
}
|
|
|
|
/*************************************************************
|
|
* Resolve the name of the server or proxy
|
|
*************************************************************/
|
|
if(conn->bits.reuse) {
|
|
/* re-used connection, no resolving is necessary */
|
|
hostaddr = NULL;
|
|
}
|
|
else if(!data->change.proxy || !*data->change.proxy) {
|
|
/* If not connecting via a proxy, extract the port from the URL, if it is
|
|
* there, thus overriding any defaults that might have been set above. */
|
|
conn->port = conn->remote_port; /* it is the same port */
|
|
|
|
/* Resolve target host right on */
|
|
hostaddr = Curl_resolv(data, conn->name, conn->port);
|
|
|
|
if(!hostaddr) {
|
|
failf(data, "Couldn't resolve host '%s'", conn->name);
|
|
result = CURLE_COULDNT_RESOLVE_HOST;
|
|
/* don't return yet, we need to clean up the timeout first */
|
|
}
|
|
}
|
|
else {
|
|
/* This is a proxy that hasn't been resolved yet. */
|
|
|
|
/* resolve proxy */
|
|
hostaddr = Curl_resolv(data, conn->proxyhost, conn->port);
|
|
|
|
if(!hostaddr) {
|
|
failf(data, "Couldn't resolve proxy '%s'", conn->proxyhost);
|
|
result = CURLE_COULDNT_RESOLVE_PROXY;
|
|
/* don't return yet, we need to clean up the timeout first */
|
|
}
|
|
}
|
|
Curl_pgrsTime(data, TIMER_NAMELOOKUP);
|
|
#ifdef HAVE_ALARM
|
|
if((data->set.timeout || data->set.connecttimeout) && !data->set.no_signal) {
|
|
#ifdef HAVE_SIGACTION
|
|
if(keep_copysig) {
|
|
/* we got a struct as it looked before, now put that one back nice
|
|
and clean */
|
|
sigaction(SIGALRM, &keep_sigact, NULL); /* put it back */
|
|
}
|
|
#else
|
|
#ifdef HAVE_SIGNAL
|
|
/* restore the previous SIGALRM handler */
|
|
signal(SIGALRM, keep_sigact);
|
|
#endif
|
|
#endif
|
|
/* switch back the alarm() to either zero or to what it was before minus
|
|
the time we spent until now! */
|
|
if(prev_alarm) {
|
|
/* there was an alarm() set before us, now put it back */
|
|
long elapsed_ms = Curl_tvdiff(Curl_tvnow(), conn->created);
|
|
long alarm_set;
|
|
|
|
/* the alarm period is counted in even number of seconds */
|
|
alarm_set = prev_alarm - elapsed_ms/1000;
|
|
|
|
if(alarm_set<=0) {
|
|
/* if it turned negative, we should fire off a SIGALRM here, but we
|
|
won't, and zero would be to switch it off so we never set it to
|
|
less than 1! */
|
|
alarm(1);
|
|
result = CURLE_OPERATION_TIMEOUTED;
|
|
failf(data, "Previous alarm fired off!");
|
|
}
|
|
else
|
|
alarm(alarm_set);
|
|
}
|
|
else
|
|
alarm(0); /* just shut it off */
|
|
}
|
|
#endif
|
|
if(result)
|
|
return result;
|
|
|
|
/*************************************************************
|
|
* Proxy authentication
|
|
*************************************************************/
|
|
if(conn->bits.proxy_user_passwd) {
|
|
char *authorization;
|
|
snprintf(data->state.buffer, BUFSIZE, "%s:%s",
|
|
data->state.proxyuser, data->state.proxypasswd);
|
|
if(Curl_base64_encode(data->state.buffer, (int)strlen(data->state.buffer),
|
|
&authorization) >= 0) {
|
|
if(conn->allocptr.proxyuserpwd)
|
|
free(conn->allocptr.proxyuserpwd);
|
|
conn->allocptr.proxyuserpwd =
|
|
aprintf("Proxy-authorization: Basic %s\015\012", authorization);
|
|
free(authorization);
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* Send user-agent to HTTP proxies even if the target protocol
|
|
* isn't HTTP.
|
|
*************************************************************/
|
|
if((conn->protocol&PROT_HTTP) ||
|
|
(data->change.proxy && *data->change.proxy)) {
|
|
if(data->set.useragent) {
|
|
if(conn->allocptr.uagent)
|
|
free(conn->allocptr.uagent);
|
|
conn->allocptr.uagent =
|
|
aprintf("User-Agent: %s\015\012", data->set.useragent);
|
|
}
|
|
}
|
|
|
|
if(data->set.encoding) {
|
|
if(conn->allocptr.accept_encoding)
|
|
free(conn->allocptr.accept_encoding);
|
|
conn->allocptr.accept_encoding =
|
|
aprintf("Accept-Encoding: %s\015\012", data->set.encoding);
|
|
}
|
|
|
|
conn->bytecount = 0;
|
|
conn->headerbytecount = 0;
|
|
|
|
if(-1 == conn->firstsocket) {
|
|
bool connected;
|
|
|
|
/* Connect only if not already connected! */
|
|
result = ConnectPlease(conn, hostaddr, &connected);
|
|
|
|
if(connected) {
|
|
result = Curl_protocol_connect(conn, hostaddr);
|
|
if(CURLE_OK == result)
|
|
conn->bits.tcpconnect = TRUE;
|
|
}
|
|
else
|
|
conn->bits.tcpconnect = FALSE;
|
|
|
|
|
|
if(CURLE_OK != result)
|
|
return result;
|
|
}
|
|
else {
|
|
Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
|
|
conn->bits.tcpconnect = TRUE;
|
|
if(data->set.verbose)
|
|
verboseconnect(conn, hostaddr);
|
|
}
|
|
|
|
conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
|
|
set this here perhaps a second time */
|
|
|
|
#ifdef __EMX__
|
|
/* 20000330 mgs
|
|
* the check is quite a hack...
|
|
* we're calling _fsetmode to fix the problem with fwrite converting newline
|
|
* characters (you get mangled text files, and corrupted binary files when
|
|
* you download to stdout and redirect it to a file). */
|
|
|
|
if ((data->set.out)->_handle == NULL) {
|
|
_fsetmode(stdout, "b");
|
|
}
|
|
#endif
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
CURLcode Curl_connect(struct SessionHandle *data,
|
|
struct connectdata **in_connect)
|
|
{
|
|
CURLcode code;
|
|
struct connectdata *conn;
|
|
|
|
/* call the stuff that needs to be called */
|
|
code = CreateConnection(data, in_connect);
|
|
|
|
if(CURLE_OK != code) {
|
|
/* We're not allowed to return failure with memory left allocated
|
|
in the connectdata struct, free those here */
|
|
conn = (struct connectdata *)*in_connect;
|
|
if(conn) {
|
|
Curl_disconnect(conn); /* close the connection */
|
|
*in_connect = NULL; /* return a NULL */
|
|
}
|
|
}
|
|
return code;
|
|
}
|
|
|
|
CURLcode Curl_done(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data=conn->data;
|
|
CURLcode result;
|
|
|
|
/* cleanups done even if the connection is re-used */
|
|
|
|
if(conn->bits.rangestringalloc) {
|
|
free(conn->range);
|
|
conn->bits.rangestringalloc = FALSE;
|
|
}
|
|
|
|
/* Cleanup possible redirect junk */
|
|
if(conn->newurl) {
|
|
free(conn->newurl);
|
|
conn->newurl = NULL;
|
|
}
|
|
|
|
if(conn->connect_addr)
|
|
Curl_resolv_unlock(conn->connect_addr); /* done with this */
|
|
|
|
#if defined(MALLOCDEBUG) && defined(AGGRESIVE_TEST)
|
|
/* scan for DNS cache entries still marked as in use */
|
|
Curl_hash_apply(data->hostcache,
|
|
NULL, Curl_scan_cache_used);
|
|
#endif
|
|
|
|
/* this calls the protocol-specific function pointer previously set */
|
|
if(conn->curl_done)
|
|
result = conn->curl_done(conn);
|
|
else
|
|
result = CURLE_OK;
|
|
|
|
Curl_pgrsDone(conn); /* done with the operation */
|
|
|
|
/* if data->set.reuse_forbid is TRUE, it means the libcurl client has
|
|
forced us to close this no matter what we think.
|
|
|
|
if conn->bits.close is TRUE, it means that the connection should be
|
|
closed in spite of all our efforts to be nice, due to protocol
|
|
restrictions in our or the server's end */
|
|
if(data->set.reuse_forbid ||
|
|
((CURLE_OK == result) && conn->bits.close))
|
|
result = Curl_disconnect(conn); /* close the connection */
|
|
else
|
|
infof(data, "Connection #%d left intact\n", conn->connectindex);
|
|
|
|
return result;
|
|
}
|
|
|
|
CURLcode Curl_do(struct connectdata **connp)
|
|
{
|
|
CURLcode result=CURLE_OK;
|
|
struct connectdata *conn = *connp;
|
|
struct SessionHandle *data=conn->data;
|
|
|
|
conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
|
|
|
|
if(conn->curl_do) {
|
|
/* generic protocol-specific function pointer set in curl_connect() */
|
|
result = conn->curl_do(conn);
|
|
|
|
/* This was formerly done in transfer.c, but we better do it here */
|
|
|
|
if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
|
|
/* This was a re-use of a connection and we got a write error in the
|
|
* DO-phase. Then we DISCONNECT this connection and have another attempt
|
|
* to CONNECT and then DO again! The retry cannot possibly find another
|
|
* connection to re-use, since we only keep one possible connection for
|
|
* each. */
|
|
|
|
infof(data, "Re-used connection seems dead, get a new one\n");
|
|
|
|
conn->bits.close = TRUE; /* enforce close of this connetion */
|
|
result = Curl_done(conn); /* we are so done with this */
|
|
if(CURLE_OK == result) {
|
|
/* Now, redo the connect and get a new connection */
|
|
result = Curl_connect(data, connp);
|
|
if(CURLE_OK == result)
|
|
/* ... finally back to actually retry the DO phase */
|
|
result = conn->curl_do(*connp);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
CURLcode Curl_do_more(struct connectdata *conn)
|
|
{
|
|
CURLcode result=CURLE_OK;
|
|
|
|
if(conn->curl_do_more)
|
|
result = conn->curl_do_more(conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* local variables:
|
|
* eval: (load-file "../curl-mode.el")
|
|
* end:
|
|
* vim600: fdm=marker
|
|
* vim: et sw=2 ts=2 sts=2 tw=78
|
|
*/
|