diff options
Diffstat (limited to 'contrib/traceroute/findsaddr-linux.c')
| -rw-r--r-- | contrib/traceroute/findsaddr-linux.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/contrib/traceroute/findsaddr-linux.c b/contrib/traceroute/findsaddr-linux.c deleted file mode 100644 index 2006f6f..0000000 --- a/contrib/traceroute/findsaddr-linux.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (c) 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. - */ - -#ifndef lint -static const char rcsid[] = - "@(#) $Id: findsaddr-linux.c,v 1.1 2000/11/23 20:17:12 leres Exp $ (LBL)"; -#endif - -/* XXX linux is different (as usual) */ - -#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 <arpa/inet.h> - -#include <errno.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 "findsaddr.h" -#include "ifaddrlist.h" -#include "traceroute.h" - -static const char route[] = "/proc/net/route"; - -/* - * Return the source address for the given destination address - */ -const char * -findsaddr(register const struct sockaddr_in *to, - register struct sockaddr_in *from) -{ - register int i, n; - register FILE *f; - register u_int32_t mask; - u_int32_t dest, tmask; - struct ifaddrlist *al; - char buf[256], tdevice[256], device[256]; - static char errbuf[132]; - - if ((f = fopen(route, "r")) == NULL) { - sprintf(errbuf, "open %s: %.128s", route, strerror(errno)); - return (errbuf); - } - - /* Find the appropriate interface */ - n = 0; - mask = 0; - device[0] = '\0'; - while (fgets(buf, sizeof(buf), f) != NULL) { - ++n; - if (n == 1 && strncmp(buf, "Iface", 5) == 0) - continue; - if ((i = sscanf(buf, "%s %x %*s %*s %*s %*s %*s %x", - tdevice, &dest, &tmask)) != 3) - return ("junk in buffer"); - if ((to->sin_addr.s_addr & tmask) == dest && - (tmask > mask || mask == 0)) { - mask = tmask; - strcpy(device, tdevice); - } - } - fclose(f); - - if (device[0] == '\0') - return ("Can't find interface"); - - /* Get the interface address list */ - if ((n = ifaddrlist(&al, errbuf)) < 0) - return (errbuf); - - if (n == 0) - return ("Can't find any network interfaces"); - - /* Find our appropriate source address */ - for (i = n; i > 0; --i, ++al) - if (strcmp(device, al->device) == 0) - break; - if (i <= 0) { - sprintf(errbuf, "Can't find interface \"%.32s\"", device); - return (errbuf); - } - - setsin(from, al->addr); - return (NULL); -} |
