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Diffstat (limited to 'usr.sbin/mrouted/icmp.c')
-rw-r--r--usr.sbin/mrouted/icmp.c225
1 files changed, 0 insertions, 225 deletions
diff --git a/usr.sbin/mrouted/icmp.c b/usr.sbin/mrouted/icmp.c
deleted file mode 100644
index 72efa0ac745b..000000000000
--- a/usr.sbin/mrouted/icmp.c
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * The mrouted program is covered by the license in the accompanying file
- * named "LICENSE". Use of the mrouted program represents acceptance of
- * the terms and conditions listed in that file.
- *
- * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
- * Leland Stanford Junior University.
- *
- *
- * icmp.c,v 3.8.4.2 1998/01/06 01:57:42 fenner Exp
- */
-
-#include "defs.h"
-
-#ifndef lint
-static char rcsid[] = "@(#) $Id: \
-icmp.c,v 3.8.4.2 1998/01/06 01:57:42 fenner Exp $";
-#endif
-
-static int icmp_socket;
-
-static void icmp_handler __P((int, fd_set *));
-static char * icmp_name __P((struct icmp *));
-
-void
-init_icmp()
-{
- if ((icmp_socket = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)) < 0)
- log(LOG_ERR, errno, "ICMP socket");
-
- register_input_handler(icmp_socket, icmp_handler);
-
- IF_DEBUG(DEBUG_ICMP)
- log(LOG_DEBUG, 0, "registering icmp socket fd %d\n", icmp_socket);
-}
-
-static void
-icmp_handler(fd, rfds)
- int fd;
- fd_set *rfds;
-{
- u_char icmp_buf[RECV_BUF_SIZE];
- struct sockaddr_in from;
- int fromlen, recvlen, iphdrlen, ipdatalen;
- struct icmp *icmp;
- struct ip *ip;
- vifi_t i;
- struct uvif *v;
- u_int32 src;
-
- fromlen = sizeof(from);
- recvlen = recvfrom(icmp_socket, icmp_buf, RECV_BUF_SIZE, 0,
- (struct sockaddr *)&from, &fromlen);
- if (recvlen < 0) {
- if (errno != EINTR)
- log(LOG_WARNING, errno, "icmp_socket recvfrom");
- return;
- }
- ip = (struct ip *)icmp_buf;
- iphdrlen = ip->ip_hl << 2;
-#ifdef RAW_INPUT_IS_RAW
- ipdatalen = ntohs(ip->ip_len) - iphdrlen;
-#else
- ipdatalen = ip->ip_len;
-#endif
- if (iphdrlen + ipdatalen != recvlen) {
- IF_DEBUG(DEBUG_ICMP)
- log(LOG_DEBUG, 0, "hdr %d data %d != rcv %d", iphdrlen, ipdatalen, recvlen);
- /* Malformed ICMP, just return. */
- return;
- }
- if (ipdatalen < ICMP_MINLEN + sizeof(struct ip)) {
- /* Not enough data for us to be interested in it. */
- return;
- }
- src = ip->ip_src.s_addr;
- icmp = (struct icmp *)(icmp_buf + iphdrlen);
- IF_DEBUG(DEBUG_ICMP)
- log(LOG_DEBUG, 0, "got ICMP type %d from %s",
- icmp->icmp_type, inet_fmt(src, s1));
- /*
- * Eventually:
- * have registry of ICMP listeners, by type, code and ICMP_ID
- * (and maybe fields of the original packet too -- maybe need a
- * generalized packet filter!) to allow ping and traceroute
- * from the monitoring tool.
- */
- switch (icmp->icmp_type) {
- case ICMP_UNREACH:
- case ICMP_TIMXCEED:
- /* Look at returned packet to see if it's us sending on a tunnel */
- ip = &icmp->icmp_ip;
- if (ip->ip_p != IPPROTO_IGMP && ip->ip_p != IPPROTO_IPIP)
- return;
- for (v = uvifs, i = 0; i < numvifs; v++, i++) {
- if (ip->ip_src.s_addr == v->uv_lcl_addr &&
- ip->ip_dst.s_addr == v->uv_dst_addr) {
- char *p;
- int n;
- /*
- * I sent this packet on this vif.
- */
- n = ++v->uv_icmp_warn;
- while (n && !(n & 1))
- n >>= 1;
- if (n == 1 && ((p = icmp_name(icmp)) != NULL))
- log(LOG_WARNING, 0, "Received ICMP %s from %s %s %s on vif %d",
- p, inet_fmt(src, s1), "for traffic sent to",
- inet_fmt(ip->ip_dst.s_addr, s2),
- i);
-
- break;
- }
- }
- break;
- }
-}
-
-/*
- * Return NULL for ICMP informational messages.
- * Return string describing the error for ICMP errors.
- */
-static char *
-icmp_name(icmp)
- struct icmp *icmp;
-{
- static char retval[30];
-
- switch (icmp->icmp_type) {
- case ICMP_UNREACH:
- switch (icmp->icmp_code) {
- case ICMP_UNREACH_NET:
- return "network unreachable";
- case ICMP_UNREACH_HOST:
- return "host unreachable";
- case ICMP_UNREACH_PROTOCOL:
- return "protocol unreachable";
- case ICMP_UNREACH_PORT:
- return "port unreachable";
- case ICMP_UNREACH_NEEDFRAG:
- return "needs fragmentation";
- case ICMP_UNREACH_SRCFAIL:
- return "source route failed";
-#ifndef ICMP_UNREACH_NET_UNKNOWN
-#define ICMP_UNREACH_NET_UNKNOWN 6
-#endif
- case ICMP_UNREACH_NET_UNKNOWN:
- return "network unknown";
-#ifndef ICMP_UNREACH_HOST_UNKNOWN
-#define ICMP_UNREACH_HOST_UNKNOWN 7
-#endif
- case ICMP_UNREACH_HOST_UNKNOWN:
- return "host unknown";
-#ifndef ICMP_UNREACH_ISOLATED
-#define ICMP_UNREACH_ISOLATED 8
-#endif
- case ICMP_UNREACH_ISOLATED:
- return "source host isolated";
-#ifndef ICMP_UNREACH_NET_PROHIB
-#define ICMP_UNREACH_NET_PROHIB 9
-#endif
- case ICMP_UNREACH_NET_PROHIB:
- return "network access prohibited";
-#ifndef ICMP_UNREACH_HOST_PROHIB
-#define ICMP_UNREACH_HOST_PROHIB 10
-#endif
- case ICMP_UNREACH_HOST_PROHIB:
- return "host access prohibited";
-#ifndef ICMP_UNREACH_TOSNET
-#define ICMP_UNREACH_TOSNET 11
-#endif
- case ICMP_UNREACH_TOSNET:
- return "bad TOS for net";
-#ifndef ICMP_UNREACH_TOSHOST
-#define ICMP_UNREACH_TOSHOST 12
-#endif
- case ICMP_UNREACH_TOSHOST:
- return "bad TOS for host";
-#ifndef ICMP_UNREACH_FILTER_PROHIB
-#define ICMP_UNREACH_FILTER_PROHIB 13
-#endif
- case ICMP_UNREACH_FILTER_PROHIB:
- return "prohibited by filter";
-#ifndef ICMP_UNREACH_HOST_PRECEDENCE
-#define ICMP_UNREACH_HOST_PRECEDENCE 14
-#endif
- case ICMP_UNREACH_HOST_PRECEDENCE:
- return "host precedence violation";
-#ifndef ICMP_UNREACH_PRECEDENCE_CUTOFF
-#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15
-#endif
- case ICMP_UNREACH_PRECEDENCE_CUTOFF:
- return "precedence cutoff";
- default:
- sprintf(retval, "unreachable code %d", icmp->icmp_code);
- return retval;
- }
- case ICMP_SOURCEQUENCH:
- return "source quench";
- case ICMP_REDIRECT:
- return NULL; /* XXX */
- case ICMP_TIMXCEED:
- switch (icmp->icmp_code) {
- case ICMP_TIMXCEED_INTRANS:
- return "time exceeded in transit";
- case ICMP_TIMXCEED_REASS:
- return "time exceeded in reassembly";
- default:
- sprintf(retval, "time exceeded code %d", icmp->icmp_code);
- return retval;
- }
- case ICMP_PARAMPROB:
- switch (icmp->icmp_code) {
-#ifndef ICMP_PARAMPROB_OPTABSENT
-#define ICMP_PARAMPROB_OPTABSENT 1
-#endif
- case ICMP_PARAMPROB_OPTABSENT:
- return "required option absent";
- default:
- sprintf(retval, "parameter problem code %d", icmp->icmp_code);
- return retval;
- }
- }
- return NULL;
-}
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