2374 lines
72 KiB
C
2374 lines
72 KiB
C
/*****************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 2001, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* In order to be useful for every potential user, curl and libcurl are
|
|
* dual-licensed under the MPL and the MIT/X-derivate licenses.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the MPL or the MIT/X-derivate
|
|
* licenses. You may pick one of these licenses.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* $Id$
|
|
*****************************************************************************/
|
|
|
|
/* -- WIN32 approved -- */
|
|
|
|
#include "setup.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
|
|
#include <winsock.h>
|
|
#include <time.h>
|
|
#include <io.h>
|
|
#else
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#include <netinet/in.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <netdb.h>
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#ifdef HAVE_NET_IF_H
|
|
#include <net/if.h>
|
|
#endif
|
|
#include <sys/ioctl.h>
|
|
#include <signal.h>
|
|
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
#include <sys/param.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_SELECT_H
|
|
#include <sys/select.h>
|
|
#endif
|
|
|
|
#ifdef VMS
|
|
#include <in.h>
|
|
#include <inet.h>
|
|
#endif
|
|
|
|
#ifndef HAVE_SELECT
|
|
#error "We can't compile without select() support!"
|
|
#endif
|
|
#ifndef HAVE_SOCKET
|
|
#error "We can't compile without socket() support!"
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#include "urldata.h"
|
|
#include "netrc.h"
|
|
|
|
#include "formdata.h"
|
|
#include "base64.h"
|
|
#include "ssluse.h"
|
|
#include "hostip.h"
|
|
#include "if2ip.h"
|
|
#include "transfer.h"
|
|
#include "sendf.h"
|
|
#include "getpass.h"
|
|
#include "progress.h"
|
|
#include "cookie.h"
|
|
#include "strequal.h"
|
|
#include "escape.h"
|
|
#include "strtok.h"
|
|
|
|
/* And now for the protocols */
|
|
#include "ftp.h"
|
|
#include "dict.h"
|
|
#include "telnet.h"
|
|
#include "http.h"
|
|
#include "file.h"
|
|
#include "ldap.h"
|
|
#include "url.h"
|
|
#include "connect.h"
|
|
|
|
#include <curl/types.h>
|
|
|
|
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
|
|
#include "inet_ntoa_r.h"
|
|
#endif
|
|
|
|
#define _MPRINTF_REPLACE /* use our functions only */
|
|
#include <curl/mprintf.h>
|
|
|
|
#ifdef KRB4
|
|
#include "security.h"
|
|
#endif
|
|
/* The last #include file should be: */
|
|
#ifdef MALLOCDEBUG
|
|
#include "memdebug.h"
|
|
#endif
|
|
|
|
/* Local static prototypes */
|
|
static int ConnectionKillOne(struct SessionHandle *data);
|
|
static bool ConnectionExists(struct SessionHandle *data,
|
|
struct connectdata *needle,
|
|
struct connectdata **usethis);
|
|
static unsigned int ConnectionStore(struct SessionHandle *data,
|
|
struct connectdata *conn);
|
|
|
|
|
|
#if !defined(WIN32)||defined(__CYGWIN32__)
|
|
#ifndef RETSIGTYPE
|
|
#define RETSIGTYPE void
|
|
#endif
|
|
static
|
|
RETSIGTYPE alarmfunc(int signal)
|
|
{
|
|
/* this is for "-ansi -Wall -pedantic" to stop complaining! (rabe) */
|
|
(void)signal;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* This is the internal function curl_easy_cleanup() calls. This should
|
|
* cleanup and free all resources associated with this sessionhandle.
|
|
*
|
|
* NOTE: if we ever add something that attempts to write to a socket or
|
|
* similar here, we must ignore SIGPIPE first. It is currently only done
|
|
* when curl_easy_perform() is invoked.
|
|
*/
|
|
|
|
CURLcode Curl_close(struct SessionHandle *data)
|
|
{
|
|
/* Loop through all open connections and kill them one by one */
|
|
while(-1 != ConnectionKillOne(data));
|
|
|
|
#ifdef USE_SSLEAY
|
|
/* Close down all open SSL info and sessions */
|
|
Curl_SSL_Close_All(data);
|
|
#endif
|
|
|
|
if(data->state.auth_host)
|
|
free(data->state.auth_host);
|
|
|
|
if(data->change.proxy_alloc)
|
|
free(data->change.proxy);
|
|
|
|
if(data->change.referer_alloc)
|
|
free(data->change.referer);
|
|
|
|
if(data->change.url_alloc)
|
|
free(data->change.url);
|
|
|
|
if(data->state.headerbuff)
|
|
free(data->state.headerbuff);
|
|
|
|
if(data->set.cookiejar)
|
|
/* we have a "destination" for all the cookies to get dumped to */
|
|
Curl_cookie_output(data->cookies, data->set.cookiejar);
|
|
|
|
Curl_cookie_cleanup(data->cookies);
|
|
|
|
/* free the connection cache */
|
|
free(data->state.connects);
|
|
|
|
if(data->info.contenttype)
|
|
free(data->info.contenttype);
|
|
|
|
free(data);
|
|
return CURLE_OK;
|
|
}
|
|
|
|
static
|
|
int my_getpass(void *clientp, const char *prompt, char* buffer, int buflen )
|
|
{
|
|
char *retbuf;
|
|
clientp=NULL; /* prevent compiler warning */
|
|
|
|
retbuf = getpass_r(prompt, buffer, buflen);
|
|
if(NULL == retbuf)
|
|
return 1;
|
|
else
|
|
return 0; /* success */
|
|
}
|
|
|
|
|
|
CURLcode Curl_open(struct SessionHandle **curl)
|
|
{
|
|
/* We don't yet support specifying the URL at this point */
|
|
struct SessionHandle *data;
|
|
/* Very simple start-up: alloc the struct, init it with zeroes and return */
|
|
data = (struct SessionHandle *)malloc(sizeof(struct SessionHandle));
|
|
if(!data)
|
|
/* this is a very serious error */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
memset(data, 0, sizeof(struct SessionHandle));
|
|
|
|
/* We do some initial setup here, all those fields that can't be just 0 */
|
|
|
|
data->state.headerbuff=(char*)malloc(HEADERSIZE);
|
|
if(!data->state.headerbuff) {
|
|
free(data); /* free the memory again */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
data->state.headersize=HEADERSIZE;
|
|
|
|
data->set.out = stdout; /* default output to stdout */
|
|
data->set.in = stdin; /* default input from stdin */
|
|
data->set.err = stderr; /* default stderr to stderr */
|
|
|
|
/* use fwrite as default function to store output */
|
|
data->set.fwrite = (curl_write_callback)fwrite;
|
|
|
|
/* use fread as default function to read input */
|
|
data->set.fread = (curl_read_callback)fread;
|
|
|
|
/* set the default passwd function */
|
|
data->set.fpasswd = my_getpass;
|
|
|
|
data->set.infilesize = -1; /* we don't know any size */
|
|
|
|
data->state.current_speed = -1; /* init to negative == impossible */
|
|
|
|
data->set.httpreq = HTTPREQ_GET; /* Default HTTP request */
|
|
data->set.ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
|
|
|
|
data->set.dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
|
|
|
|
/* make libcurl quiet by default: */
|
|
data->set.hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
|
|
data->progress.flags |= PGRS_HIDE;
|
|
|
|
/* Set the default size of the SSL session ID cache */
|
|
data->set.ssl.numsessions = 5;
|
|
|
|
/* create an array with connection data struct pointers */
|
|
data->state.numconnects = 5; /* hard-coded right now */
|
|
data->state.connects = (struct connectdata **)
|
|
malloc(sizeof(struct connectdata *) * data->state.numconnects);
|
|
|
|
if(!data->state.connects) {
|
|
free(data);
|
|
return CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
memset(data->state.connects, 0,
|
|
sizeof(struct connectdata *)*data->state.numconnects);
|
|
|
|
*curl = data;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option, ...)
|
|
{
|
|
va_list param;
|
|
char *cookiefile;
|
|
|
|
va_start(param, option);
|
|
|
|
switch(option) {
|
|
case CURLOPT_DNS_CACHE_TIMEOUT:
|
|
data->set.dns_cache_timeout = va_arg(param, int);
|
|
break;
|
|
case CURLOPT_DNS_USE_GLOBAL_CACHE:
|
|
{
|
|
int use_cache = va_arg(param, int);
|
|
if (use_cache) {
|
|
Curl_global_host_cache_init();
|
|
}
|
|
|
|
data->set.global_dns_cache = use_cache;
|
|
}
|
|
break;
|
|
case CURLOPT_SSL_CIPHER_LIST:
|
|
/* set a list of cipher we want to use in the SSL connection */
|
|
data->set.ssl.cipher_list = va_arg(param, char *);
|
|
break;
|
|
|
|
case CURLOPT_RANDOM_FILE:
|
|
/*
|
|
* This is the path name to a file that contains random data to seed
|
|
* the random SSL stuff with. The file is only used for reading.
|
|
*/
|
|
data->set.ssl.random_file = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_EGDSOCKET:
|
|
/*
|
|
* The Entropy Gathering Daemon socket pathname
|
|
*/
|
|
data->set.ssl.egdsocket = va_arg(param, char *);
|
|
break;
|
|
case CURLOPT_MAXCONNECTS:
|
|
/*
|
|
* Set the absolute number of maximum simultaneous alive connection that
|
|
* libcurl is allowed to have.
|
|
*/
|
|
{
|
|
long newconnects= va_arg(param, long);
|
|
struct connectdata **newptr;
|
|
|
|
if(newconnects < data->state.numconnects) {
|
|
/* Since this number is *decreased* from the existing number, we must
|
|
close the possibly open connections that live on the indexes that
|
|
are being removed! */
|
|
int i;
|
|
for(i=newconnects; i< data->state.numconnects; i++)
|
|
Curl_disconnect(data->state.connects[i]);
|
|
}
|
|
if(newconnects) {
|
|
newptr= (struct connectdata **)
|
|
realloc(data->state.connects,
|
|
sizeof(struct connectdata *) * newconnects);
|
|
if(!newptr)
|
|
/* we closed a few connections in vain, but so what? */
|
|
return CURLE_OUT_OF_MEMORY;
|
|
data->state.connects = newptr;
|
|
data->state.numconnects = newconnects;
|
|
}
|
|
else {
|
|
/* zero makes NO cache at all */
|
|
if(data->state.connects)
|
|
free(data->state.connects);
|
|
data->state.connects=NULL;
|
|
data->state.numconnects=0;
|
|
}
|
|
}
|
|
break;
|
|
case CURLOPT_FORBID_REUSE:
|
|
/*
|
|
* When this transfer is done, it must not be left to be reused by a
|
|
* subsequent transfer but shall be closed immediately.
|
|
*/
|
|
data->set.reuse_forbid = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_FRESH_CONNECT:
|
|
/*
|
|
* This transfer shall not use a previously cached connection but
|
|
* should be made with a fresh new connect!
|
|
*/
|
|
data->set.reuse_fresh = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_VERBOSE:
|
|
/*
|
|
* Verbose means infof() calls that give a lot of information about
|
|
* the connection and transfer procedures as well as internal choices.
|
|
*/
|
|
data->set.verbose = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_HEADER:
|
|
/*
|
|
* Set to include the header in the general data output stream.
|
|
*/
|
|
data->set.http_include_header = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_NOPROGRESS:
|
|
/*
|
|
* Shut off the internal supported progress meter
|
|
*/
|
|
data->set.hide_progress = va_arg(param, long)?TRUE:FALSE;
|
|
if(data->set.hide_progress)
|
|
data->progress.flags |= PGRS_HIDE;
|
|
else
|
|
data->progress.flags &= ~PGRS_HIDE;
|
|
break;
|
|
case CURLOPT_NOBODY:
|
|
/*
|
|
* Do not include the body part in the output data stream.
|
|
*/
|
|
data->set.no_body = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_FAILONERROR:
|
|
/*
|
|
* Don't output the >=300 error code HTML-page, but instead only
|
|
* return error.
|
|
*/
|
|
data->set.http_fail_on_error = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_UPLOAD:
|
|
/*
|
|
* We want to sent data to the remote host
|
|
*/
|
|
data->set.upload = va_arg(param, long)?TRUE:FALSE;
|
|
if(data->set.upload)
|
|
/* If this is HTTP, PUT is what's needed to "upload" */
|
|
data->set.httpreq = HTTPREQ_PUT;
|
|
break;
|
|
case CURLOPT_FILETIME:
|
|
/*
|
|
* Try to get the file time of the remote document. The time will
|
|
* later (possibly) become available using curl_easy_getinfo().
|
|
*/
|
|
data->set.get_filetime = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_FTPLISTONLY:
|
|
/*
|
|
* An FTP option that changes the command to one that asks for a list
|
|
* only, no file info details.
|
|
*/
|
|
data->set.ftp_list_only = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_FTPAPPEND:
|
|
/*
|
|
* We want to upload and append to an existing (FTP) file.
|
|
*/
|
|
data->set.ftp_append = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_NETRC:
|
|
/*
|
|
* Parse the $HOME/.netrc file
|
|
*/
|
|
data->set.use_netrc = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_FOLLOWLOCATION:
|
|
/*
|
|
* Follow Location: header hints on a HTTP-server.
|
|
*/
|
|
data->set.http_follow_location = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_HTTP_VERSION:
|
|
/*
|
|
* This sets a requested HTTP version to be used. The value is one of
|
|
* the listed enums in curl/curl.h.
|
|
*/
|
|
data->set.httpversion = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_TRANSFERTEXT:
|
|
/*
|
|
* This option was previously named 'FTPASCII'. Renamed to work with
|
|
* more protocols than merely FTP.
|
|
*
|
|
* Transfer using ASCII (instead of BINARY).
|
|
*/
|
|
data->set.ftp_ascii = va_arg(param, long)?TRUE:FALSE;
|
|
break;
|
|
case CURLOPT_PUT:
|
|
/*
|
|
* Use the HTTP PUT request to transfer data if this is TRUE. If this is
|
|
* FALSE, don't set the httpreq. We can't know what to revert it to!
|
|
*/
|
|
if(va_arg(param, long))
|
|
data->set.httpreq = HTTPREQ_PUT;
|
|
break;
|
|
case CURLOPT_TIMECONDITION:
|
|
/*
|
|
* Set HTTP time condition. This must be one of the defines in the
|
|
* curl/curl.h header file.
|
|
*/
|
|
data->set.timecondition = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_TIMEVALUE:
|
|
/*
|
|
* This is the value to compare with the remote document with the
|
|
* method set with CURLOPT_TIMECONDITION
|
|
*/
|
|
data->set.timevalue = va_arg(param, long);
|
|
break;
|
|
case CURLOPT_SSLVERSION:
|
|
/*
|
|
* Set explicit SSL version to try to connect with, as some SSL
|
|
* implementations are lame.
|
|
*/
|
|
data->set.ssl.version = va_arg(param, long);
|
|
break;
|
|
|
|
case CURLOPT_COOKIEFILE:
|
|
/*
|
|
* Set cookie file to read and parse. Can be used multiple times.
|
|
*/
|
|
cookiefile = (char *)va_arg(param, void *);
|
|
if(cookiefile)
|
|
data->cookies = Curl_cookie_init(cookiefile, data->cookies);
|
|
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);
|
|
break;
|
|
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 = data->set.ftpport?1:0;
|
|
break;
|
|
|
|
case CURLOPT_FTP_USE_EPSV:
|
|
data->set.ftp_use_epsv = 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? */
|
|
|
|
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 = va_arg(param, long)?1:0;
|
|
break;
|
|
case CURLOPT_PROXY:
|
|
/*
|
|
* Set proxy server:port to use as HTTP proxy
|
|
*/
|
|
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 = 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_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_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);
|
|
data->progress.callback = TRUE; /* no longer 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);
|
|
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_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 *);
|
|
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 = 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=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 *);
|
|
data->set.ssl.CApath = NULL; /*This does not work on windows.*/
|
|
break;
|
|
case CURLOPT_TELNETOPTIONS:
|
|
/*
|
|
* Set a linked list of telnet options
|
|
*/
|
|
data->set.telnet_options = va_arg(param, struct curl_slist *);
|
|
break;
|
|
default:
|
|
/* unknown tag and its companion, just ignore: */
|
|
return CURLE_READ_ERROR; /* 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.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 = 1;
|
|
|
|
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++) {
|
|
/*
|
|
* 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) ) {
|
|
bool dead;
|
|
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;
|
|
}
|
|
}
|
|
dead = SocketIsDead(check->firstsocket);
|
|
if(dead) {
|
|
/*
|
|
* Even though the connection seems to have passed away, we could
|
|
* still make an effort to get the name information, as we intend to
|
|
* connect to the same host again.
|
|
*
|
|
* This is now subject to discussion. What do you think?
|
|
*/
|
|
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 search, because we only store
|
|
one connection for each unique set of identifiers */
|
|
return FALSE;
|
|
}
|
|
|
|
*usethis = check;
|
|
return TRUE; /* yes, we found one to use! */
|
|
|
|
}
|
|
}
|
|
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! */
|
|
*usethis = check;
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
|
|
static CURLcode ConnectPlease(struct connectdata *conn)
|
|
{
|
|
CURLcode result;
|
|
Curl_ipconnect *addr;
|
|
|
|
/*************************************************************
|
|
* Connect to server/proxy
|
|
*************************************************************/
|
|
result= Curl_connecthost(conn,
|
|
conn->hostaddr,
|
|
conn->port,
|
|
&conn->firstsocket,
|
|
&addr);
|
|
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. */
|
|
#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 = conn->hostaddr->h_addrtype;
|
|
conn->serv_addr.sin_port = htons(conn->port);
|
|
#endif
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
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;
|
|
char endbracket;
|
|
int urllen;
|
|
#ifdef HAVE_INET_NTOA_R
|
|
char ntoa_buf[64];
|
|
#endif
|
|
#ifdef HAVE_ALARM
|
|
unsigned int prev_alarm;
|
|
#endif
|
|
|
|
#ifdef HAVE_SIGACTION
|
|
struct sigaction keep_sigact; /* store the old struct here */
|
|
bool keep_copysig; /* 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 = data->change.proxy?TRUE:FALSE; /* proxy-or-not */
|
|
conn->bits.use_range = 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 = TRUE;
|
|
|
|
/* inherite initial knowledge from the data struct */
|
|
conn->bits.user_passwd = data->set.userpwd?1:0;
|
|
conn->bits.proxy_user_passwd = data->set.proxyuserpwd?1:0;
|
|
|
|
/* 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();
|
|
|
|
|
|
/***********************************************************
|
|
* 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=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.
|
|
*/
|
|
|
|
if(strnequal(conn->gname, "FTP", 3)) {
|
|
strcpy(conn->protostr, "ftp");
|
|
}
|
|
else if(strnequal(conn->gname, "GOPHER", 6))
|
|
strcpy(conn->protostr, "gopher");
|
|
#ifdef USE_SSLEAY
|
|
else if(strnequal(conn->gname, "HTTPS", 5))
|
|
strcpy(conn->protostr, "https");
|
|
else if(strnequal(conn->gname, "FTPS", 4))
|
|
strcpy(conn->protostr, "ftps");
|
|
#endif /* USE_SSLEAY */
|
|
else if(strnequal(conn->gname, "TELNET", 6))
|
|
strcpy(conn->protostr, "telnet");
|
|
else if (strnequal(conn->gname, "DICT", sizeof("DICT")-1))
|
|
strcpy(conn->protostr, "DICT");
|
|
else if (strnequal(conn->gname, "LDAP", sizeof("LDAP")-1))
|
|
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 */
|
|
|
|
/*************************************************************
|
|
* Take care of user and password authentication stuff
|
|
*************************************************************/
|
|
|
|
if(conn->bits.user_passwd && !data->set.use_netrc) {
|
|
data->state.user[0] =0;
|
|
data->state.passwd[0]=0;
|
|
|
|
if(*data->set.userpwd != ':') {
|
|
/* the name is given, get user+password */
|
|
sscanf(data->set.userpwd, "%127[^:]:%127[^\n]",
|
|
data->state.user, data->state.passwd);
|
|
}
|
|
else
|
|
/* no name given, get the password only */
|
|
sscanf(data->set.userpwd+1, "%127[^\n]", data->state.passwd);
|
|
|
|
/* check for password, if no ask for one */
|
|
if( !data->state.passwd[0] ) {
|
|
if(!data->set.fpasswd ||
|
|
data->set.fpasswd(data->set.passwd_client,
|
|
"password:", data->state.passwd,
|
|
sizeof(data->state.passwd)))
|
|
return CURLE_BAD_PASSWORD_ENTERED;
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* 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.fpasswd( data->set.passwd_client,
|
|
"proxy password:",
|
|
data->state.proxypasswd,
|
|
sizeof(data->state.proxypasswd)))
|
|
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) {
|
|
if(strlen(nope) <= strlen(conn->name)) {
|
|
char *checkn=
|
|
conn->name + strlen(conn->name) - strlen(nope);
|
|
if(strnequal(nope, checkn, strlen(nope))) {
|
|
/* 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++ = 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 = 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 */
|
|
}
|
|
|
|
/************************************************************
|
|
* 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 */
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* Setup internals depending on protocol
|
|
*************************************************************/
|
|
|
|
if (strequal(conn->protostr, "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_done = Curl_http_done;
|
|
conn->curl_connect = Curl_http_connect;
|
|
}
|
|
else if (strequal(conn->protostr, "HTTPS")) {
|
|
#ifdef USE_SSLEAY
|
|
|
|
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_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")) {
|
|
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_done = Curl_http_done;
|
|
}
|
|
else if(strequal(conn->protostr, "FTP") ||
|
|
strequal(conn->protostr, "FTPS")) {
|
|
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->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;
|
|
}
|
|
conn->curl_do = Curl_http;
|
|
conn->curl_done = Curl_http_done;
|
|
}
|
|
else {
|
|
conn->curl_do = Curl_ftp;
|
|
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;
|
|
command = 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;
|
|
}
|
|
}
|
|
}
|
|
else if(strequal(conn->protostr, "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 if (strequal(conn->protostr, "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 if (strequal(conn->protostr, "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 if (strequal(conn->protostr, "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) {
|
|
result = Curl_Transfer(conn, -1, -1, FALSE, NULL, /* no download */
|
|
-1, NULL); /* no upload */
|
|
}
|
|
|
|
return result;
|
|
}
|
|
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;
|
|
}
|
|
|
|
/*************************************************************
|
|
* .netrc scanning coming up
|
|
*************************************************************/
|
|
if(data->set.use_netrc) {
|
|
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 */
|
|
|
|
/* weather we failed or not, we don't know which fields that were filled
|
|
in anyway */
|
|
if(!data->state.user[0])
|
|
strcpy(data->state.user, CURL_DEFAULT_USER);
|
|
if(!data->state.passwd[0])
|
|
strcpy(data->state.passwd, CURL_DEFAULT_PASSWORD);
|
|
}
|
|
else if(!(conn->bits.user_passwd) &&
|
|
(conn->protocol & (PROT_FTP|PROT_HTTP)) ) {
|
|
/* This is a FTP or HTTP URL, and we haven't got the user+password in
|
|
* the extra parameter, 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=NULL; /* assign to remove possible warnings */
|
|
if((ptr=strchr(conn->name, '@'))) {
|
|
/* there's a user+password given here, to the left of the @ */
|
|
|
|
data->state.user[0] =0;
|
|
data->state.passwd[0]=0;
|
|
|
|
if(*conn->name != ':') {
|
|
/* the name is given, get user+password */
|
|
sscanf(conn->name, "%127[^:@]:%127[^@]",
|
|
data->state.user, data->state.passwd);
|
|
}
|
|
else
|
|
/* no name given, get the password only */
|
|
sscanf(conn->name+1, "%127[^@]", data->state.passwd);
|
|
|
|
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);
|
|
}
|
|
|
|
/* check for password, if no ask for one */
|
|
if( !data->state.passwd[0] ) {
|
|
if(!data->set.fpasswd ||
|
|
data->set.fpasswd(data->set.passwd_client,
|
|
"password:", data->state.passwd,
|
|
sizeof(data->state.passwd)))
|
|
return CURLE_BAD_PASSWORD_ENTERED;
|
|
}
|
|
else {
|
|
/* 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);
|
|
}
|
|
|
|
conn->name = ++ptr;
|
|
conn->bits.user_passwd=TRUE; /* enable user+password */
|
|
}
|
|
else {
|
|
strcpy(data->state.user, CURL_DEFAULT_USER);
|
|
strcpy(data->state.passwd, CURL_DEFAULT_PASSWORD);
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* 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)
|
|
*************************************************************/
|
|
|
|
if((1 == sscanf(conn->name, "[%*39[0-9a-fA-F:.]%c", &endbracket)) &&
|
|
(']' == endbracket)) {
|
|
/* This is a (IPv6-style) specified IP-address. We support _any_
|
|
IP within brackets to be really generic. */
|
|
conn->name++; /* pass the starting bracket */
|
|
|
|
tmp = strchr(conn->name, ']');
|
|
*tmp = 0; /* zero terminate */
|
|
|
|
tmp++; /* pass the ending bracket */
|
|
if(':' != *tmp)
|
|
tmp = NULL; /* no port number available */
|
|
}
|
|
else {
|
|
/* traditional IPv4-style port-extracting */
|
|
tmp = strchr(conn->name, ':');
|
|
}
|
|
|
|
if (tmp) {
|
|
*tmp++ = '\0'; /* cut off the name there */
|
|
conn->remote_port = atoi(tmp);
|
|
}
|
|
|
|
if(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 */
|
|
}
|
|
|
|
/*************************************************************
|
|
* 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 */
|
|
|
|
/* we need these pointers if we speak over a proxy */
|
|
conn->hostname = old_conn->gname;
|
|
conn->name = old_conn->name;
|
|
|
|
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) {
|
|
/*************************************************************
|
|
* 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(!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 */
|
|
if(!conn->hostaddr) {
|
|
/* it might already be set if reusing a connection */
|
|
conn->hostaddr = Curl_resolv(data, conn->name, conn->port,
|
|
&conn->hostent_buf);
|
|
}
|
|
if(!conn->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 if(!conn->hostaddr) {
|
|
/* This is a proxy that hasn't been resolved yet. It may be resolved
|
|
if we're reusing an existing connection. */
|
|
|
|
/* resolve proxy */
|
|
/* it might already be set if reusing a connection */
|
|
conn->hostaddr = Curl_resolv(data, conn->proxyhost, conn->port,
|
|
&conn->hostent_buf);
|
|
|
|
if(!conn->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) {
|
|
#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, 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) {
|
|
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(-1 == conn->firstsocket) {
|
|
/* Connect only if not already connected! */
|
|
result = ConnectPlease(conn);
|
|
if(CURLE_OK != result)
|
|
return result;
|
|
|
|
if(conn->curl_connect) {
|
|
/* is there a 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);
|
|
if(result != CURLE_OK)
|
|
return result; /* pass back errors */
|
|
}
|
|
}
|
|
|
|
Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected */
|
|
|
|
conn->now = Curl_tvnow(); /* time this *after* the connect is done */
|
|
conn->bytecount = 0;
|
|
conn->headerbytecount = 0;
|
|
|
|
/* Figure out the ip-number and display the first host name it shows: */
|
|
#ifdef ENABLE_IPV6
|
|
{
|
|
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
|
|
{
|
|
struct in_addr in;
|
|
(void) memcpy(&in.s_addr, &conn->serv_addr.sin_addr, sizeof (in.s_addr));
|
|
infof(data, "Connected to %s (%s)\n", conn->hostaddr->h_name,
|
|
#if defined(HAVE_INET_NTOA_R)
|
|
inet_ntoa_r(in, ntoa_buf, sizeof(ntoa_buf))
|
|
#else
|
|
inet_ntoa(in)
|
|
#endif
|
|
);
|
|
}
|
|
#endif
|
|
|
|
#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;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
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_WRITE_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;
|
|
}
|
|
|
|
/*
|
|
* local variables:
|
|
* eval: (load-file "../curl-mode.el")
|
|
* end:
|
|
* vim600: fdm=marker
|
|
* vim: et sw=2 ts=2 sts=2 tw=78
|
|
*/
|