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2004-11-15 Dan Williams <dcbw@redhat.com>

Browse Source 
Major rework of link detection code.  We now use DHCP
	as part of the link detection which proves to be much more robust,
	and also supports Open System authentication for wireless networks.

	We no longer use external DHCP client programs.  Instead, we use
	our own DHCP client, based on substantially reworked bits of 'dhcpcd'
	which was written by:
		Yoichi Hariguchi <yoichi@fore.com>
		Sergei Viznyuk <sv@phystech.com>
		http://www.phystech.com/download/
	It resides in the "dhcpcd" directory and was refactored into a general
	purpose DHCP client library by me.

	Also misc fixes (CPPFLAGS->AM_CPPFLAGS, move some stuff around),
	move src/backends/NetworkManagerSystem.h -> src/NetworkManagerSystem.h


git-svn-id: http://svn-archive.gnome.org/svn/NetworkManager/trunk@314 4912f4e0-d625-0410-9fb7-b9a5a253dbdc
This commit is contained in:
Dan Williams
2004-11-16 02:41:53 +00:00
parent b36e976315
commit 2ad25b238e
34 changed files with 5355 additions and 173 deletions
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256
src/NetworkManagerSystem.c Normal file
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/* NetworkManager -- Network link manager
*
* Dan Williams <dcbw@redhat.com>
*
* 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 02111-1307, USA.
*
* Copyright (C) 2004 Red Hat, Inc.
* Copyright (C) 1996 - 1997 Yoichi Hariguchi <yoichi@fore.com>
* Copyright (C) January, 1998 Sergei Viznyuk <sv@phystech.com>
*
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <net/route.h>
#include <net/if.h>
#include <arpa/nameser.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <resolv.h>
#include <netdb.h>
#include <glib.h>
#include "NetworkManagerSystem.h"
#include "NetworkManagerDevice.h"
static int nm_system_open_sock (void)
{
int fd;
/* Try to grab a control socket */
fd = socket (AF_PACKET, SOCK_PACKET, htons (ETH_P_ALL));
if (fd >= 0)
return (fd);
syslog (LOG_ERR, "nm_system_open_sock() could not get network control socket.");
return (-1);
}
gboolean nm_system_device_set_ip4_address (NMDevice *dev, int ip4_address)
{
struct ifreq ifr;
const char *iface;
int sk;
gboolean success = FALSE;
struct sockaddr_in *p = (struct sockaddr_in *)&(ifr.ifr_addr);
g_return_val_if_fail (dev != NULL, FALSE);
iface = nm_device_get_iface (dev);
sk = nm_system_open_sock ();
if (sk < 0)
return FALSE;
memset (&ifr, 0, sizeof(struct ifreq));
memcpy (ifr.ifr_name, iface, strlen (iface));
p->sin_family = AF_INET;
p->sin_addr.s_addr = ip4_address;
if (ioctl (sk, SIOCSIFADDR, &ifr) == -1)
syslog (LOG_ERR,"nm_system_device_set_ip4_address (%s): failed to set IPv4 address!", iface);
else
{
success = TRUE;
fprintf(stderr, "Your IP address = %u.%u.%u.%u\n",
((unsigned char *)&ip4_address)[0],
((unsigned char *)&ip4_address)[1],
((unsigned char *)&ip4_address)[2],
((unsigned char *)&ip4_address)[3]);
}
close (sk);
return (success);
}
gboolean nm_system_device_set_ip4_netmask (NMDevice *dev, int ip4_netmask)
{
struct ifreq ifr;
const char *iface;
int sk;
gboolean success = FALSE;
struct sockaddr_in *p = (struct sockaddr_in *)&(ifr.ifr_addr);
g_return_val_if_fail (dev != NULL, FALSE);
iface = nm_device_get_iface (dev);
sk = nm_system_open_sock ();
if (sk < 0)
return FALSE;
memset (&ifr, 0, sizeof(struct ifreq));
memcpy (ifr.ifr_name, iface, strlen (iface));
p->sin_family = AF_INET;
p->sin_addr.s_addr = ip4_netmask;
if (ioctl (sk, SIOCSIFNETMASK, &ifr) == -1)
syslog (LOG_ERR,"nm_system_device_set_ip4_netmask (%s): failed to set IPv4 netmask!", iface);
else
success = TRUE;
close (sk);
return (success);
}
gboolean nm_system_device_set_ip4_broadcast (NMDevice *dev, int ip4_broadcast)
{
struct ifreq ifr;
const char *iface;
int sk;
gboolean success = FALSE;
struct sockaddr_in *p = (struct sockaddr_in *)&(ifr.ifr_addr);
g_return_val_if_fail (dev != NULL, FALSE);
iface = nm_device_get_iface (dev);
sk = nm_system_open_sock ();
if (sk < 0)
return FALSE;
memset (&ifr, 0, sizeof(struct ifreq));
memcpy (ifr.ifr_name, iface, strlen (iface));
p->sin_family = AF_INET;
p->sin_addr.s_addr = ip4_broadcast;
if (ioctl (sk, SIOCSIFBRDADDR, &ifr) == -1)
syslog (LOG_ERR,"nm_system_device_set_ip4_netmask (%s): failed to set IPv4 netmask!", iface);
else
success = TRUE;
close (sk);
return (success);
}
gboolean nm_system_device_set_ip4_default_route (NMDevice *dev, int ip4_def_route)
{
const char *iface;
int sk;
gboolean success = FALSE;
struct rtentry rtent;
struct sockaddr_in *p;
g_return_val_if_fail (dev != NULL, FALSE);
iface = nm_device_get_iface (dev);
sk = nm_system_open_sock ();
if (sk < 0)
return FALSE;
memset (&rtent, 0, sizeof (struct rtentry));
p = (struct sockaddr_in *)&rtent.rt_dst;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
p = (struct sockaddr_in *)&rtent.rt_gateway;
p->sin_family = AF_INET;
p->sin_addr.s_addr = ip4_def_route;
p = (struct sockaddr_in *)&rtent.rt_genmask;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0;
rtent.rt_dev = (char *)iface;
rtent.rt_metric = 1;
rtent.rt_window = 0;
rtent.rt_flags = RTF_UP | RTF_GATEWAY | ( rtent.rt_window ? RTF_WINDOW : 0);
if ( ioctl (sk, SIOCADDRT, &rtent) == -1 )
{
if ( errno == ENETUNREACH ) /* possibly gateway is over the bridge */
{ /* try adding a route to gateway first */
struct rtentry rtent2;
memset (&rtent2, 0, sizeof(struct rtentry));
p = (struct sockaddr_in *)&rtent2.rt_dst;
p->sin_family = AF_INET;
p = (struct sockaddr_in *)&rtent2.rt_gateway;
p->sin_family = AF_INET;
p->sin_addr.s_addr = ip4_def_route;
p = (struct sockaddr_in *)&rtent2.rt_genmask;
p->sin_family = AF_INET;
p->sin_addr.s_addr = 0xffffffff;
rtent2.rt_dev = (char *)iface;
rtent2.rt_metric = 0;
rtent2.rt_flags = RTF_UP | RTF_HOST;
if ( ioctl (sk, SIOCADDRT, &rtent2) == 0 )
{
if ( ioctl (sk, SIOCADDRT, &rtent) == 0 )
success = TRUE;
else
syslog (LOG_ERR,"nm_system_device_set_ip4_default_route (%s): failed to set IPv4 default route! errno = %d", iface, errno);
}
}
else
syslog (LOG_ERR,"nm_system_device_set_ip4_default_route (%s): failed to set IPv4 default route! errno = %d", iface, errno);
}
else
success = TRUE;
close (sk);
return (success);
}
/*****************************************************************************/
gboolean nm_system_device_update_resolv_conf (void *data, int len, const char *domain_name)
{
FILE *f;
g_return_val_if_fail (data != NULL, FALSE);
if ((f = fopen ("/etc/resolv.conf", "w")))
{
int i;
fprintf (f, "; generated by NetworkManager\n");
if (domain_name)
fprintf (f, "search %s\n", (char *)domain_name);
for (i = 0; i < len; i += 4)
{
fprintf (f,"nameserver %u.%u.%u.%u\n",
((unsigned char *)data)[i],
((unsigned char *)data)[i+1],
((unsigned char *)data)[i+2],
((unsigned char *)data)[i+3]);
}
fclose(f);
}
else
syslog (LOG_ERR,"nm_system_device_update_resolv_conf(): could not open /etc/resolv.conf\n");
/* Reload DNS info for all apps */
(void)res_init();
return 0;
}