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Diffstat (limited to 'source/lib/interfaces.c')
| -rw-r--r-- | source/lib/interfaces.c | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/source/lib/interfaces.c b/source/lib/interfaces.c deleted file mode 100644 index e7b9efa1f0a..00000000000 --- a/source/lib/interfaces.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 2.0 - return a list of network interfaces - Copyright (C) Andrew Tridgell 1998 - - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - - -/* working out the interfaces for a OS is an incredibly non-portable - thing. We have several possible implementations below, and autoconf - tries each of them to see what works - - Note that this file does _not_ include includes.h. That is so this code - can be called directly from the autoconf tests. That also means - this code cannot use any of the normal Samba debug stuff or defines. - This is standalone code. - -*/ - -#include <unistd.h> -#include <stdio.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <sys/ioctl.h> -#ifdef HAVE_SYS_TIME_H -#include <sys/time.h> -#endif -#include <net/if.h> - -#ifndef SIOCGIFCONF -#include <sys/sockio.h> -#endif - -#ifdef AUTOCONF_TEST -struct iface_struct { - char name[16]; - struct in_addr ip; - struct in_addr netmask; -}; -#else -#include "config.h" -#include "interfaces.h" -#endif - -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#ifdef HAVE_STRING_H -#include <string.h> -#endif - -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif - -#ifdef __COMPAR_FN_T -#define QSORT_CAST (__compar_fn_t) -#endif - -#ifndef QSORT_CAST -#define QSORT_CAST (int (*)(const void *, const void *)) -#endif - -#if HAVE_IFACE_IFCONF - -/* this works for Linux 2.2, Solaris 2.5, SunOS4, HPUX 10.20, OSF1 - V4.0, Ultrix 4.4, SCO Unix 3.2, IRIX 6.4 and FreeBSD 3.2. - - It probably also works on any BSD style system. */ - -/**************************************************************************** - get the netmask address for a local interface -****************************************************************************/ -static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) -{ - struct ifconf ifc; - char buff[8192]; - int fd, i, n; - struct ifreq *ifr=NULL; - int total = 0; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; - - if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { - return -1; - } - - ifc.ifc_len = sizeof(buff); - ifc.ifc_buf = buff; - - if (ioctl(fd, SIOCGIFCONF, &ifc) != 0) { - close(fd); - return -1; - } - - ifr = ifc.ifc_req; - - n = ifc.ifc_len / sizeof(struct ifreq); - - /* Loop through interfaces, looking for given IP address */ - for (i=n-1;i>=0 && total < max_interfaces;i--) { - if (ioctl(fd, SIOCGIFADDR, &ifr[i]) != 0) { - continue; - } - - iname = ifr[i].ifr_name; - ipaddr = (*(struct sockaddr_in *)&ifr[i].ifr_addr).sin_addr; - - if (ioctl(fd, SIOCGIFFLAGS, &ifr[i]) != 0) { - continue; - } - - if (!(ifr[i].ifr_flags & IFF_UP)) { - continue; - } - - if (ioctl(fd, SIOCGIFNETMASK, &ifr[i]) != 0) { - continue; - } - - nmask = ((struct sockaddr_in *)&ifr[i].ifr_addr)->sin_addr; - - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].ip = ipaddr; - ifaces[total].netmask = nmask; - total++; - } - - close(fd); - - return total; -} - -#elif HAVE_IFACE_IFREQ - -#ifndef I_STR -#include <sys/stropts.h> -#endif - -/**************************************************************************** -this should cover most of the streams based systems -Thanks to Andrej.Borsenkow@mow.siemens.ru for several ideas in this code -****************************************************************************/ -static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) -{ - struct ifreq ifreq; - struct strioctl strioctl; - char buff[8192]; - int fd, i, n; - struct ifreq *ifr=NULL; - int total = 0; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; - - if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { - return -1; - } - - strioctl.ic_cmd = SIOCGIFCONF; - strioctl.ic_dp = buff; - strioctl.ic_len = sizeof(buff); - if (ioctl(fd, I_STR, &strioctl) < 0) { - close(fd); - return -1; - } - - /* we can ignore the possible sizeof(int) here as the resulting - number of interface structures won't change */ - n = strioctl.ic_len / sizeof(struct ifreq); - - /* we will assume that the kernel returns the length as an int - at the start of the buffer if the offered size is a - multiple of the structure size plus an int */ - if (n*sizeof(struct ifreq) + sizeof(int) == strioctl.ic_len) { - ifr = (struct ifreq *)(buff + sizeof(int)); - } else { - ifr = (struct ifreq *)buff; - } - - /* Loop through interfaces */ - - for (i = 0; i<n && total < max_interfaces; i++) { - ifreq = ifr[i]; - - strioctl.ic_cmd = SIOCGIFFLAGS; - strioctl.ic_dp = (char *)&ifreq; - strioctl.ic_len = sizeof(struct ifreq); - if (ioctl(fd, I_STR, &strioctl) != 0) { - continue; - } - - if (!(ifreq.ifr_flags & IFF_UP)) { - continue; - } - - strioctl.ic_cmd = SIOCGIFADDR; - strioctl.ic_dp = (char *)&ifreq; - strioctl.ic_len = sizeof(struct ifreq); - if (ioctl(fd, I_STR, &strioctl) != 0) { - continue; - } - - ipaddr = (*(struct sockaddr_in *) &ifreq.ifr_addr).sin_addr; - iname = ifreq.ifr_name; - - strioctl.ic_cmd = SIOCGIFNETMASK; - strioctl.ic_dp = (char *)&ifreq; - strioctl.ic_len = sizeof(struct ifreq); - if (ioctl(fd, I_STR, &strioctl) != 0) { - continue; - } - - nmask = ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr; - - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].ip = ipaddr; - ifaces[total].netmask = nmask; - - total++; - } - - close(fd); - - return total; -} - -#elif HAVE_IFACE_AIX - -/**************************************************************************** -this one is for AIX (tested on 4.2) -****************************************************************************/ -static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) -{ - char buff[8192]; - int fd, i; - struct ifconf ifc; - struct ifreq *ifr=NULL; - struct in_addr ipaddr; - struct in_addr nmask; - char *iname; - int total = 0; - - if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { - return -1; - } - - - ifc.ifc_len = sizeof(buff); - ifc.ifc_buf = buff; - - if (ioctl(fd, SIOCGIFCONF, &ifc) != 0) { - close(fd); - return -1; - } - - ifr = ifc.ifc_req; - - /* Loop through interfaces */ - i = ifc.ifc_len; - - while (i > 0 && total < max_interfaces) { - unsigned inc; - - inc = ifr->ifr_addr.sa_len; - - if (ioctl(fd, SIOCGIFADDR, ifr) != 0) { - goto next; - } - - ipaddr = (*(struct sockaddr_in *) &ifr->ifr_addr).sin_addr; - iname = ifr->ifr_name; - - if (ioctl(fd, SIOCGIFFLAGS, ifr) != 0) { - goto next; - } - - if (!(ifr->ifr_flags & IFF_UP)) { - goto next; - } - - if (ioctl(fd, SIOCGIFNETMASK, ifr) != 0) { - goto next; - } - - nmask = ((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr; - - strncpy(ifaces[total].name, iname, sizeof(ifaces[total].name)-1); - ifaces[total].name[sizeof(ifaces[total].name)-1] = 0; - ifaces[total].ip = ipaddr; - ifaces[total].netmask = nmask; - - total++; - - next: - /* - * Patch from Archie Cobbs (archie@whistle.com). The - * addresses in the SIOCGIFCONF interface list have a - * minimum size. Usually this doesn't matter, but if - * your machine has tunnel interfaces, etc. that have - * a zero length "link address", this does matter. */ - - if (inc < sizeof(ifr->ifr_addr)) - inc = sizeof(ifr->ifr_addr); - inc += IFNAMSIZ; - - ifr = (struct ifreq*) (((char*) ifr) + inc); - i -= inc; - } - - - close(fd); - return total; -} - -#else /* a dummy version */ -static int _get_interfaces(struct iface_struct *ifaces, int max_interfaces) -{ - return -1; -} -#endif - - -static int iface_comp(struct iface_struct *i1, struct iface_struct *i2) -{ - int r; - r = strcmp(i1->name, i2->name); - if (r) return r; - r = ntohl(i1->ip.s_addr) - ntohl(i2->ip.s_addr); - if (r) return r; - r = ntohl(i1->netmask.s_addr) - ntohl(i2->netmask.s_addr); - return r; -} - -/* this wrapper is used to remove duplicates from the interface list generated - above */ -int get_interfaces(struct iface_struct *ifaces, int max_interfaces) -{ - int total, i, j; - - total = _get_interfaces(ifaces, max_interfaces); - if (total <= 0) return total; - - /* now we need to remove duplicates */ - qsort(ifaces, total, sizeof(ifaces[0]), QSORT_CAST iface_comp); - - for (i=1;i<total;) { - if (iface_comp(&ifaces[i-1], &ifaces[i]) == 0) { - for (j=i-1;j<total-1;j++) { - ifaces[j] = ifaces[j+1]; - } - total--; - } else { - i++; - } - } - - return total; -} - - -#ifdef AUTOCONF_TEST -/* this is the autoconf driver to test get_interfaces() */ - -#define MAX_INTERFACES 128 - - int main() -{ - struct iface_struct ifaces[MAX_INTERFACES]; - int total = get_interfaces(ifaces, MAX_INTERFACES); - int i; - - printf("got %d interfaces:\n", total); - if (total <= 0) exit(1); - - for (i=0;i<total;i++) { - printf("%-10s ", ifaces[i].name); - printf("IP=%s ", inet_ntoa(ifaces[i].ip)); - printf("NETMASK=%s\n", inet_ntoa(ifaces[i].netmask)); - } - return 0; -} -#endif |