/* NetworkManager -- Network link manager * * Dan Williams * * 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 * Copyright (C) January, 1998 Sergei Viznyuk * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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; syslog (LOG_INFO, "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! errno = %s", iface, strerror (errno)); 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; if ((f = fopen ("/etc/resolv.conf", "w"))) { int i; fprintf (f, "; generated by NetworkManager\n"); if (domain_name && strlen (domain_name)) fprintf (f, "search %s\n", (char *)domain_name); for (i = 0; data && (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; }