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/*****************************************************************************/
/* socket-connect.c - contains functions for connecting to a server */
/* Copyright (C) 1998-2008 Brian Masney <masneyb@gftp.org> */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either version 2 of the License, or */
/* (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111 USA */
/*****************************************************************************/
#include "gftp.h"
static const char cvsid[] = "$Id: protocols.c 952 2008-01-24 23:31:26Z masneyb $";
static int
gftp_need_proxy (gftp_request * request, char *service, char *proxy_hostname,
unsigned int proxy_port, void **connect_data)
{
gftp_config_list_vars * proxy_hosts;
gftp_proxy_hosts * hostname;
size_t hostlen, domlen;
unsigned char addy[4];
GList * templist;
gint32 netaddr;
char *pos;
#if !defined (HAVE_GETADDRINFO) || !defined (HAVE_GAI_STRERROR)
struct hostent host;
int ret;
#endif
gftp_lookup_global_option ("dont_use_proxy", &proxy_hosts);
if (proxy_hostname == NULL || *proxy_hostname == '\0')
return (0);
else if (proxy_hosts->list == NULL)
return (proxy_hostname != NULL &&
*proxy_hostname != '\0');
#if defined (HAVE_GETADDRINFO) && defined (HAVE_GAI_STRERROR)
*connect_data = lookup_host_with_getaddrinfo (request, service,
proxy_hostname, proxy_port);
if (*connect_data == NULL)
return (GFTP_ERETRYABLE);
#else /* !HAVE_GETADDRINFO */
ret = lookup_host_with_gethostbyname (request, proxy_hostname, &host);
if (ret != 0)
return (ret);
connect_data = NULL; /* FIXME */
#endif
templist = proxy_hosts->list;
while (templist != NULL)
{
hostname = templist->data;
if (hostname->domain != NULL)
{
hostlen = strlen (request->hostname);
domlen = strlen (hostname->domain);
if (hostlen > domlen)
{
pos = request->hostname + hostlen - domlen;
if (strcmp (hostname->domain, pos) == 0)
return (0);
}
}
if (hostname->ipv4_network_address != 0)
{
memcpy (addy, request->remote_addr, sizeof (*addy));
netaddr =
(((addy[0] & 0xff) << 24) | ((addy[1] & 0xff) << 16) |
((addy[2] & 0xff) << 8) | (addy[3] & 0xff)) &
hostname->ipv4_netmask;
if (netaddr == hostname->ipv4_network_address)
return (0);
}
templist = templist->next;
}
return (proxy_hostname != NULL && *proxy_hostname != '\0');
}
int
gftp_connect_server (gftp_request * request, char *service,
char *proxy_hostname, unsigned int proxy_port)
{
void *connect_data;
int sock, ret;
if ((ret = gftp_need_proxy (request, service, proxy_hostname,
proxy_port, &connect_data)) < 0)
return (ret);
request->use_proxy = ret;
/* FIXME - pass connect_data to these functions. This is to bypass a
second DNS lookup */
#if defined (HAVE_GETADDRINFO) && defined (HAVE_GAI_STRERROR)
sock = gftp_connect_server_with_getaddrinfo (request, service, proxy_hostname,
proxy_port);
#else
sock = gftp_connect_server_legacy (request, service, proxy_hostname,
proxy_port);
#endif
if (sock < 0)
return (sock);
if (fcntl (sock, F_SETFD, 1) == -1)
{
request->logging_function (gftp_logging_error, request,
_("Error: Cannot set close on exec flag: %s\n"),
g_strerror (errno));
close (sock);
return (GFTP_ERETRYABLE);
}
if (gftp_fd_set_sockblocking (request, sock, 1) < 0)
{
close (sock);
return (GFTP_ERETRYABLE);
}
request->datafd = sock;
if (request->post_connect != NULL)
return (request->post_connect (request));
return (0);
}
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