linux-dvb-apps.git - linux-dvb-apps Debian packaging

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Diffstat (limited to 'util/scan/dvb-t/it-Firenze')

-rw-r--r--

1 files changed, 9 insertions, 9 deletions

/* $Id: $ * $URL: $ * * plugin getting information about network devices (IPaddress, MACaddress, ...) * * Copyright (C) 2007 Volker Gering <v.gering@t-online.de> * Copyright (C) 2004, 2005, 2006, 2007 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * This file is part of LCD4Linux. * * LCD4Linux 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, or (at your option) * any later version. * * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * exported functions: * * int plugin_init_netinfo (void) * adds functions to get information about network devices * */ #include "config.h" #include <stdlib.h> #include <unistd.h> #include <string.h> /* memcpy() */ #include <ctype.h> #include <math.h> /* rint(), log2l() */ #include "debug.h" #include "plugin.h" #include "qprintf.h" #include <sys/types.h> /* socket() */ #include <sys/socket.h> /* socket() */ #include <sys/ioctl.h> /* SIOCGIFNAME */ #include <net/if.h> /* ifreq{} */ #include <errno.h> /* errno */ #include <netinet/in.h> /* inet_ntoa() */ #include <arpa/inet.h> /* inet_ntoa() */ /* socket descriptor: * -2 initial state * -1 error: message not printed * -3 error: message printed, deactivate plugin */ static int socknr = -2; static int open_net(void) { if (socknr == -3) return -1; if (socknr == -2) { socknr = socket(PF_INET, SOCK_DGRAM, 0); } if (socknr == -1) { error("%s: socket(PF_INET, SOCK_DGRAM, 0) failed: %s", "plugin_netinfo", strerror(errno)); error(" deactivate plugin netinfo"); socknr = -3; return -1; } return 0; } static void my_exists(RESULT * result, RESULT * arg1) { char buf[10240]; struct ifconf ifcnf; struct ifreq *ifreq; int len; double value = 0.0; // netdev doesn't exists char devname[80]; if (socknr < 0) { /* no open socket */ SetResult(&result, R_NUMBER, &value); return; } ifcnf.ifc_len = sizeof(buf); ifcnf.ifc_buf = buf; if (ioctl(socknr, SIOCGIFCONF, &ifcnf) < 0) { /* error getting list of devices */ error("%s: ioctl(IFCONF) for %s failed: %s", "plugin_netinfo", R2S(arg1), strerror(errno)); SetResult(&result, R_NUMBER, &value); return; } if (0 == ifcnf.ifc_len) { /* no interfaces found */ SetResult(&result, R_NUMBER, &value); return; } ifreq = (struct ifreq *) buf; len = sizeof(struct ifreq); strncpy(devname, R2S(arg1), sizeof(devname)); while (ifreq && *((char *) ifreq) && ((char *) ifreq) < buf + ifcnf.ifc_len) { if (*((char *) ifreq) && strncmp(ifreq->ifr_name, devname, sizeof(devname)) == 0) { /* found */ value = 1.0; SetResult(&result, R_NUMBER, &value); return; } (*(char **) &ifreq) += len; } /* device doesn't exists */ SetResult(&result, R_NUMBER, &value); } /* get MAC address (hardware address) of network device */ static void my_hwaddr(RESULT * result, RESULT * arg1) { static int errcount = 0; struct ifreq ifreq; unsigned char *hw; char value[18]; if (socknr < 0) { /* no open socket */ SetResult(&result, R_STRING, ""); return; } strncpy(ifreq.ifr_name, R2S(arg1), sizeof(ifreq.ifr_name)); #ifndef __MAC_OS_X_VERSION_10_3 // Linux: get interface MAC address if (ioctl(socknr, SIOCGIFHWADDR, &ifreq) < 0) { #else // MacOS: get interface MAC address if (ioctl(socknr, SIOCGLIFPHYADDR, &ifreq) < 0) { #endif errcount++; if (1 == errcount % 1000) { error("%s: ioctl(IF_HARDW_ADDR %s) failed: %s", "plugin_netinfo", ifreq.ifr_name, strerror(errno)); error(" (skip next 1000 errors)"); } SetResult(&result, R_STRING, ""); return; } #ifndef __MAC_OS_X_VERSION_10_3 hw = (unsigned char *) ifreq.ifr_hwaddr.sa_data; #else hw = (unsigned char *) ifreq.ifr_data; #endif qprintf(value, sizeof(value), "%02x:%02x:%02x:%02x:%02x:%02x", *hw, *(hw + 1), *(hw + 2), *(hw + 3), *(hw + 4), *(hw + 5)); SetResult(&result, R_STRING, value); } /* get ip address of network device */ static void my_ipaddr(RESULT * result, RESULT * arg1) { static int errcount = 0; struct ifreq ifreq; struct sockaddr_in *sin; char value[16]; if (socknr < 0) { /* no open socket */ SetResult(&result, R_STRING, ""); return; } strncpy(ifreq.ifr_name, R2S(arg1), sizeof(ifreq.ifr_name)); if (ioctl(socknr, SIOCGIFADDR, &ifreq) < 0) { errcount++; if (1 == errcount % 1000) { error("%s: ioctl(IFADDR %s) failed: %s", "plugin_netinfo", ifreq.ifr_name, strerror(errno)); error(" (skip next 1000 errors)"); } SetResult(&result, R_STRING, ""); return; } sin = (struct sockaddr_in *) &ifreq.ifr_addr; qprintf(value, sizeof(value), "%s", inet_ntoa(sin->sin_addr)); SetResult(&result, R_STRING, value); } struct sockaddr_in *get_netmask(RESULT * arg1) { static int errcount = 0; struct ifreq ifreq; struct sockaddr_in *sin; static struct sockaddr_in sret; strncpy(ifreq.ifr_name, R2S(arg1), sizeof(ifreq.ifr_name)); if (ioctl(socknr, SIOCGIFNETMASK, &ifreq) < 0) { errcount++; if (1 == errcount % 1000) { error("%s: ioctl(IFNETMASK %s) failed: %s", "plugin_netinfo", ifreq.ifr_name, strerror(errno)); error(" (skip next 1000 errors)"); } return NULL; } #ifndef __MAC_OS_X_VERSION_10_3 sin = (struct sockaddr_in *) &ifreq.ifr_netmask; #else sin = (struct sockaddr_in *) &ifreq.ifr_data; #endif memcpy(&sret, sin, sizeof(sret)); return &sret; } /* get ip netmask of network device */ static void my_netmask(RESULT * result, RESULT * arg1) { char value[16]; struct sockaddr_in *sin; if (socknr < 0) { /* no open socket */ SetResult(&result, R_STRING, ""); return; } sin = get_netmask(arg1); qprintf(value, sizeof(value), "%s", NULL != sin ? inet_ntoa(sin->sin_addr) : "?"); SetResult(&result, R_STRING, value); } /* get netmask in short CIDR notation */ static void my_netmask_short(RESULT * result, RESULT * arg1) { char value[16]; struct sockaddr_in *sin; int netlen = 0; long double logval = 0.0; if (socknr < 0) { /* no open socket */ SetResult(&result, R_STRING, ""); return; } sin = get_netmask(arg1); if (NULL != sin) { logval = (long double) (get_netmask(arg1)->sin_addr.s_addr); netlen = (int) rint(log2l(logval) / log2l(2.0)); qprintf(value, sizeof(value), "/%d", netlen); } else { qprintf(value, sizeof(value), "/?"); } SetResult(&result, R_STRING, value); } /* get ip broadcast address of network device */ static void my_bcaddr(RESULT * result, RESULT * arg1) { static int errcount = 0; struct ifreq ifreq; struct sockaddr_in *sin; char value[16]; if (socknr < 0) { /* no open socket */ SetResult(&result, R_STRING, ""); return; } strncpy(ifreq.ifr_name, R2S(arg1), sizeof(ifreq.ifr_name)); if (ioctl(socknr, SIOCGIFBRDADDR, &ifreq) < 0) { errcount++; if (1 == errcount % 1000) { error("%s: ioctl(IFBRDADDR %s) failed: %s", "plugin_netinfo", ifreq.ifr_name, strerror(errno)); error(" (skip next 1000 errors)"); } SetResult(&result, R_STRING, ""); return; } sin = (struct sockaddr_in *) &ifreq.ifr_broadaddr; qprintf(value, sizeof(value), "%s", inet_ntoa(sin->sin_addr)); SetResult(&result, R_STRING, value); } int plugin_init_netinfo(void) { open_net(); AddFunction("netinfo::exists", 1, my_exists); AddFunction("netinfo::hwaddr", 1, my_hwaddr); AddFunction("netinfo::ipaddr", 1, my_ipaddr); AddFunction("netinfo::netmask", 1, my_netmask); AddFunction("netinfo::netmask_short", 1, my_netmask_short); AddFunction("netinfo::bcaddr", 1, my_bcaddr); return 0; } void plugin_exit_netinfo(void) { close(socknr); }


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