/* Unix SMB/CIFS implementation. Samba utility functions Copyright (C) Andrew Tridgell 1998 Copyright (C) Jeremy Allison 2007 Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007 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 3 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, see <http://www.gnu.org/licenses/>. */ #define SOCKET_WRAPPER_NOT_REPLACE #include "replace.h" #include "system/network.h" #include <unistd.h> #include <stdio.h> #include <sys/types.h> #ifdef HAVE_SYS_TIME_H #include <sys/time.h> #endif #ifndef SIOCGIFCONF #ifdef HAVE_SYS_SOCKIO_H #include <sys/sockio.h> #endif #endif #ifdef HAVE_IFACE_GETIFADDRS #define _FOUND_IFACE_ANY #else void rep_freeifaddrs(struct ifaddrs *ifp) { if (ifp != NULL) { free(ifp->ifa_name); free(ifp->ifa_addr); free(ifp->ifa_netmask); free(ifp->ifa_dstaddr); freeifaddrs(ifp->ifa_next); free(ifp); } } static struct sockaddr *sockaddr_dup(struct sockaddr *sa) { struct sockaddr *ret; socklen_t socklen; #ifdef HAVE_SOCKADDR_SA_LEN socklen = sa->sa_len; #else socklen = sizeof(struct sockaddr_storage); #endif ret = calloc(1, socklen); if (ret == NULL) return NULL; memcpy(ret, sa, socklen); return ret; } #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. */ int rep_getifaddrs(struct ifaddrs **ifap) { struct ifconf ifc; char buff[8192]; int fd, i, n; struct ifreq *ifr=NULL; struct in_addr ipaddr; struct in_addr nmask; char *iname; struct ifaddrs *curif; struct ifaddrs *lastif = NULL; *ifap = NULL; 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; i--) { if (ioctl(fd, SIOCGIFFLAGS, &ifr[i]) == -1) { freeifaddrs(*ifap); return -1; } curif = calloc(1, sizeof(struct ifaddrs)); curif->ifa_name = strdup(ifr[i].ifr_name); curif->ifa_flags = ifr[i].ifr_flags; curif->ifa_dstaddr = NULL; curif->ifa_data = NULL; curif->ifa_next = NULL; curif->ifa_addr = NULL; if (ioctl(fd, SIOCGIFADDR, &ifr[i]) != -1) { curif->ifa_addr = sockaddr_dup(&ifr[i].ifr_addr); } curif->ifa_netmask = NULL; if (ioctl(fd, SIOCGIFNETMASK, &ifr[i]) != -1) { curif->ifa_netmask = sockaddr_dup(&ifr[i].ifr_addr); } if (lastif == NULL) { *ifap = curif; } else { lastif->ifa_next = curif; } lastif = curif; } close(fd); return 0; } #define _FOUND_IFACE_ANY #endif /* HAVE_IFACE_IFCONF */ #ifdef 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 ****************************************************************************/ int rep_getifaddrs(struct ifaddrs **ifap) { struct ifreq ifreq; struct strioctl strioctl; char buff[8192]; int fd, i, n; struct ifreq *ifr=NULL; struct in_addr ipaddr; struct in_addr nmask; char *iname; struct ifaddrs *curif; struct ifaddrs *lastif = NULL; *ifap = NULL; 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; i++) { ifreq = ifr[i]; curif = calloc(1, sizeof(struct ifaddrs)); if (lastif == NULL) { *ifap = curif; } else { lastif->ifa_next = curif; } strioctl.ic_cmd = SIOCGIFFLAGS; strioctl.ic_dp = (char *)&ifreq; strioctl.ic_len = sizeof(struct ifreq); if (ioctl(fd, I_STR, &strioctl) != 0) { freeifaddrs(*ifap); return -1; } curif->ifa_flags = ifreq.ifr_flags; strioctl.ic_cmd = SIOCGIFADDR; strioctl.ic_dp = (char *)&ifreq; strioctl.ic_len = sizeof(struct ifreq); if (ioctl(fd, I_STR, &strioctl) != 0) { freeifaddrs(*ifap); return -1; } curif->ifa_name = strdup(ifreq.ifr_name); curif->ifa_addr = sockaddr_dup(&ifreq.ifr_addr); curif->ifa_dstaddr = NULL; curif->ifa_data = NULL; curif->ifa_next = NULL; curif->ifa_netmask = NULL; strioctl.ic_cmd = SIOCGIFNETMASK; strioctl.ic_dp = (char *)&ifreq; strioctl.ic_len = sizeof(struct ifreq); if (ioctl(fd, I_STR, &strioctl) != 0) { freeifaddrs(*ifap); return -1; } curif->ifa_netmask = sockaddr_dup(&ifreq.ifr_addr); lastif = curif; } close(fd); return 0; } #define _FOUND_IFACE_ANY #endif /* HAVE_IFACE_IFREQ */ #ifdef HAVE_IFACE_AIX /**************************************************************************** this one is for AIX (tested on 4.2) ****************************************************************************/ int rep_getifaddrs(struct ifaddrs **ifap) { char buff[8192]; int fd, i; struct ifconf ifc; struct ifreq *ifr=NULL; struct in_addr ipaddr; struct in_addr nmask; char *iname; struct ifaddrs *curif; struct ifaddrs *lastif = NULL; *ifap = NULL; 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) { uint_t inc; inc = ifr->ifr_addr.sa_len; if (ioctl(fd, SIOCGIFADDR, ifr) != 0) { freeaddrinfo(*ifap); return -1; } curif = calloc(1, sizeof(struct ifaddrs)); if (lastif == NULL) { *ifap = curif; } else { lastif->ifa_next = curif; } curif->ifa_name = strdup(ifr->ifr_name); curif->ifa_addr = sockaddr_dup(&ifr->ifr_addr); curif->ifa_dstaddr = NULL; curif->ifa_data = NULL; curif->ifa_netmask = NULL; curif->ifa_next = NULL; if (ioctl(fd, SIOCGIFFLAGS, ifr) != 0) { freeaddrinfo(*ifap); return -1; } curif->ifa_flags = ifr->ifr_flags; if (ioctl(fd, SIOCGIFNETMASK, ifr) != 0) { freeaddrinfo(*ifap); return -1; } curif->ifa_netmask = sockaddr_dup(&ifr->ifr_addr); lastif = curif; 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 0; } #define _FOUND_IFACE_ANY #endif /* HAVE_IFACE_AIX */ #ifndef _FOUND_IFACE_ANY int rep_getifaddrs(struct ifaddrs **ifap) { errno = ENOSYS; return -1; } #endif