diff options
Diffstat (limited to 'network_cmds/traceroute.tproj/ifaddrlist.c')
| -rw-r--r-- | network_cmds/traceroute.tproj/ifaddrlist.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/network_cmds/traceroute.tproj/ifaddrlist.c b/network_cmds/traceroute.tproj/ifaddrlist.c new file mode 100644 index 0000000..17b1026 --- /dev/null +++ b/network_cmds/traceroute.tproj/ifaddrlist.c @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2009 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + */ + +/* + * Copyright (c) 1997, 1998, 1999, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/file.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#ifdef HAVE_SYS_SOCKIO_H +#include <sys/sockio.h> +#endif +#include <sys/time.h> /* concession to AIX */ + +#if __STDC__ +struct mbuf; +struct rtentry; +#endif + +#include <net/if.h> +#include <netinet/in.h> + +#include <ctype.h> +#include <errno.h> +#include <memory.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "gnuc.h" +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif + +#include "ifaddrlist.h" + +/* + * Return the interface list + */ +int +ifaddrlist(register struct ifaddrlist **ipaddrp, register char *errbuf, size_t errbuflen) +{ + register int fd, nipaddr; +#ifdef HAVE_SOCKADDR_SA_LEN + register int n; +#endif + register struct ifreq *ifrp, *ifend, *ifnext, *mp; + register struct sockaddr_in *sin; + register struct ifaddrlist *al; + struct ifconf ifc; + struct ifreq ibuf[(32 * 1024) / sizeof(struct ifreq)], ifr; +#define MAX_IPADDR (sizeof(ibuf) / sizeof(ibuf[0])) + static struct ifaddrlist ifaddrlist[MAX_IPADDR]; + char device[sizeof(ifr.ifr_name) + 1]; + + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + (void)snprintf(errbuf, errbuflen, "socket: %s", strerror(errno)); + return (-1); + } + ifc.ifc_len = sizeof(ibuf); + ifc.ifc_buf = (caddr_t)ibuf; + + if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 || + ifc.ifc_len < sizeof(struct ifreq)) { + if (errno == EINVAL) + (void)snprintf(errbuf, sizeof(errbuf), + "SIOCGIFCONF: ifreq struct too small (%d bytes)", + (int)sizeof(ibuf)); + else + (void)snprintf(errbuf, errbuflen, "SIOCGIFCONF: %s", + strerror(errno)); + (void)close(fd); + return (-1); + } + ifrp = ibuf; + ifend = (struct ifreq *)((char *)ibuf + ifc.ifc_len); + + al = ifaddrlist; + mp = NULL; + nipaddr = 0; + for (; ifrp < ifend; ifrp = ifnext) { +#ifdef HAVE_SOCKADDR_SA_LEN + n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name); + if (n < sizeof(*ifrp)) + ifnext = ifrp + 1; + else + ifnext = (struct ifreq *)((char *)ifrp + n); + if (ifrp->ifr_addr.sa_family != AF_INET) + continue; +#else + ifnext = ifrp + 1; +#endif + /* + * Need a template to preserve address info that is + * used below to locate the next entry. (Otherwise, + * SIOCGIFFLAGS stomps over it because the requests + * are returned in a union.) + */ + strlcpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name)); + if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) { + if (errno == ENXIO) + continue; + (void)snprintf(errbuf, errbuflen, "SIOCGIFFLAGS: %.*s: %s", + (int)sizeof(ifr.ifr_name), ifr.ifr_name, + strerror(errno)); + (void)close(fd); + return (-1); + } + + /* Must be up */ + if ((ifr.ifr_flags & IFF_UP) == 0) + continue; + + + (void)strlcpy(device, ifr.ifr_name, sizeof(device)); +#ifdef sun + /* Ignore sun virtual interfaces */ + if (strchr(device, ':') != NULL) + continue; +#endif + if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) { + (void)snprintf(errbuf, errbuflen, "SIOCGIFADDR: %s: %s", + device, strerror(errno)); + (void)close(fd); + return (-1); + } + + if (nipaddr >= MAX_IPADDR) { + (void)snprintf(errbuf, errbuflen, "Too many interfaces (%d)", + (int)MAX_IPADDR); + (void)close(fd); + return (-1); + } + sin = (struct sockaddr_in *)&ifr.ifr_addr; + al->addr = sin->sin_addr.s_addr; + al->device = strdup(device); + ++al; + ++nipaddr; + } + (void)close(fd); + + *ipaddrp = ifaddrlist; + return (nipaddr); +} |