diff options
Diffstat (limited to 'print-igmp.c')
-rw-r--r-- | print-igmp.c | 228 |
1 files changed, 112 insertions, 116 deletions
diff --git a/print-igmp.c b/print-igmp.c index 4087ee098020..e4808a77861a 100644 --- a/print-igmp.c +++ b/print-igmp.c @@ -19,20 +19,13 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-igmp.c,v 1.15 2004-03-24 00:59:16 guy Exp $ (LBL)"; -#endif - +#define NETDISSECT_REWORKED #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <tcpdump-stdinc.h> -#include <stdio.h> -#include <string.h> - #include "interface.h" #include "addrtoname.h" #include "extract.h" /* must come after interface.h */ @@ -41,16 +34,18 @@ static const char rcsid[] _U_ = #define IN_CLASSD(i) (((int32_t)(i) & 0xf0000000) == 0xe0000000) #endif +static const char tstr[] = "[|igmp]"; + /* (following from ipmulti/mrouted/prune.h) */ /* * The packet format for a traceroute request. */ struct tr_query { - u_int32_t tr_src; /* traceroute source */ - u_int32_t tr_dst; /* traceroute destination */ - u_int32_t tr_raddr; /* traceroute response address */ - u_int32_t tr_rttlqid; /* response ttl and qid */ + uint32_t tr_src; /* traceroute source */ + uint32_t tr_dst; /* traceroute destination */ + uint32_t tr_raddr; /* traceroute response address */ + uint32_t tr_rttlqid; /* response ttl and qid */ }; #define TR_GETTTL(x) (int)(((x) >> 24) & 0xff) @@ -61,17 +56,17 @@ struct tr_query { * beginning, followed by one tr_resp for each hop taken. */ struct tr_resp { - u_int32_t tr_qarr; /* query arrival time */ - u_int32_t tr_inaddr; /* incoming interface address */ - u_int32_t tr_outaddr; /* outgoing interface address */ - u_int32_t tr_rmtaddr; /* parent address in source tree */ - u_int32_t tr_vifin; /* input packet count on interface */ - u_int32_t tr_vifout; /* output packet count on interface */ - u_int32_t tr_pktcnt; /* total incoming packets for src-grp */ - u_int8_t tr_rproto; /* routing proto deployed on router */ - u_int8_t tr_fttl; /* ttl required to forward on outvif */ - u_int8_t tr_smask; /* subnet mask for src addr */ - u_int8_t tr_rflags; /* forwarding error codes */ + uint32_t tr_qarr; /* query arrival time */ + uint32_t tr_inaddr; /* incoming interface address */ + uint32_t tr_outaddr; /* outgoing interface address */ + uint32_t tr_rmtaddr; /* parent address in source tree */ + uint32_t tr_vifin; /* input packet count on interface */ + uint32_t tr_vifout; /* output packet count on interface */ + uint32_t tr_pktcnt; /* total incoming packets for src-grp */ + uint8_t tr_rproto; /* routing proto deployed on router */ + uint8_t tr_fttl; /* ttl required to forward on outvif */ + uint8_t tr_smask; /* subnet mask for src addr */ + uint8_t tr_rflags; /* forwarding error codes */ }; /* defs within mtrace */ @@ -96,7 +91,7 @@ struct tr_resp { #define TR_PROTO_CBT 4 /* igmpv3 report types */ -static struct tok igmpv3report2str[] = { +static const struct tok igmpv3report2str[] = { { 1, "is_in" }, { 2, "is_ex" }, { 3, "to_in" }, @@ -107,118 +102,119 @@ static struct tok igmpv3report2str[] = { }; static void -print_mtrace(register const u_char *bp, register u_int len) +print_mtrace(netdissect_options *ndo, + register const u_char *bp, register u_int len) { register const struct tr_query *tr = (const struct tr_query *)(bp + 8); - TCHECK(*tr); + ND_TCHECK(*tr); if (len < 8 + sizeof (struct tr_query)) { - (void)printf(" [invalid len %d]", len); + ND_PRINT((ndo, " [invalid len %d]", len)); return; } - printf("mtrace %u: %s to %s reply-to %s", + ND_PRINT((ndo, "mtrace %u: %s to %s reply-to %s", TR_GETQID(EXTRACT_32BITS(&tr->tr_rttlqid)), - ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst), - ipaddr_string(&tr->tr_raddr)); + ipaddr_string(ndo, &tr->tr_src), ipaddr_string(ndo, &tr->tr_dst), + ipaddr_string(ndo, &tr->tr_raddr))); if (IN_CLASSD(EXTRACT_32BITS(&tr->tr_raddr))) - printf(" with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid))); + ND_PRINT((ndo, " with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid)))); return; trunc: - (void)printf("[|igmp]"); - return; + ND_PRINT((ndo, "%s", tstr)); } static void -print_mresp(register const u_char *bp, register u_int len) +print_mresp(netdissect_options *ndo, + register const u_char *bp, register u_int len) { register const struct tr_query *tr = (const struct tr_query *)(bp + 8); - TCHECK(*tr); + ND_TCHECK(*tr); if (len < 8 + sizeof (struct tr_query)) { - (void)printf(" [invalid len %d]", len); + ND_PRINT((ndo, " [invalid len %d]", len)); return; } - printf("mresp %lu: %s to %s reply-to %s", + ND_PRINT((ndo, "mresp %lu: %s to %s reply-to %s", (u_long)TR_GETQID(EXTRACT_32BITS(&tr->tr_rttlqid)), - ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst), - ipaddr_string(&tr->tr_raddr)); + ipaddr_string(ndo, &tr->tr_src), ipaddr_string(ndo, &tr->tr_dst), + ipaddr_string(ndo, &tr->tr_raddr))); if (IN_CLASSD(EXTRACT_32BITS(&tr->tr_raddr))) - printf(" with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid))); + ND_PRINT((ndo, " with-ttl %d", TR_GETTTL(EXTRACT_32BITS(&tr->tr_rttlqid)))); return; trunc: - (void)printf("[|igmp]"); - return; + ND_PRINT((ndo, "%s", tstr)); } static void -print_igmpv3_report(register const u_char *bp, register u_int len) +print_igmpv3_report(netdissect_options *ndo, + register const u_char *bp, register u_int len) { u_int group, nsrcs, ngroups; register u_int i, j; /* Minimum len is 16, and should be a multiple of 4 */ if (len < 16 || len & 0x03) { - (void)printf(" [invalid len %d]", len); + ND_PRINT((ndo, " [invalid len %d]", len)); return; } - TCHECK2(bp[6], 2); + ND_TCHECK2(bp[6], 2); ngroups = EXTRACT_16BITS(&bp[6]); - (void)printf(", %d group record(s)", ngroups); - if (vflag > 0) { + ND_PRINT((ndo, ", %d group record(s)", ngroups)); + if (ndo->ndo_vflag > 0) { /* Print the group records */ group = 8; for (i=0; i<ngroups; i++) { if (len < group+8) { - (void)printf(" [invalid number of groups]"); + ND_PRINT((ndo, " [invalid number of groups]")); return; } - TCHECK2(bp[group+4], 4); - (void)printf(" [gaddr %s", ipaddr_string(&bp[group+4])); - (void)printf(" %s", tok2str(igmpv3report2str, " [v3-report-#%d]", - bp[group])); + ND_TCHECK2(bp[group+4], 4); + ND_PRINT((ndo, " [gaddr %s", ipaddr_string(ndo, &bp[group+4]))); + ND_PRINT((ndo, " %s", tok2str(igmpv3report2str, " [v3-report-#%d]", + bp[group]))); nsrcs = EXTRACT_16BITS(&bp[group+2]); /* Check the number of sources and print them */ if (len < group+8+(nsrcs<<2)) { - (void)printf(" [invalid number of sources %d]", nsrcs); + ND_PRINT((ndo, " [invalid number of sources %d]", nsrcs)); return; } - if (vflag == 1) - (void)printf(", %d source(s)", nsrcs); + if (ndo->ndo_vflag == 1) + ND_PRINT((ndo, ", %d source(s)", nsrcs)); else { /* Print the sources */ - (void)printf(" {"); + ND_PRINT((ndo, " {")); for (j=0; j<nsrcs; j++) { - TCHECK2(bp[group+8+(j<<2)], 4); - (void)printf(" %s", ipaddr_string(&bp[group+8+(j<<2)])); + ND_TCHECK2(bp[group+8+(j<<2)], 4); + ND_PRINT((ndo, " %s", ipaddr_string(ndo, &bp[group+8+(j<<2)]))); } - (void)printf(" }"); + ND_PRINT((ndo, " }")); } /* Next group record */ group += 8 + (nsrcs << 2); - (void)printf("]"); + ND_PRINT((ndo, "]")); } } return; trunc: - (void)printf("[|igmp]"); - return; + ND_PRINT((ndo, "%s", tstr)); } static void -print_igmpv3_query(register const u_char *bp, register u_int len) +print_igmpv3_query(netdissect_options *ndo, + register const u_char *bp, register u_int len) { u_int mrc; int mrt; u_int nsrcs; register u_int i; - (void)printf(" v3"); + ND_PRINT((ndo, " v3")); /* Minimum len is 12, and should be a multiple of 4 */ if (len < 12 || len & 0x03) { - (void)printf(" [invalid len %d]", len); + ND_PRINT((ndo, " [invalid len %d]", len)); return; } - TCHECK(bp[1]); + ND_TCHECK(bp[1]); mrc = bp[1]; if (mrc < 128) { mrt = mrc; @@ -226,119 +222,119 @@ print_igmpv3_query(register const u_char *bp, register u_int len) mrt = ((mrc & 0x0f) | 0x10) << (((mrc & 0x70) >> 4) + 3); } if (mrc != 100) { - (void)printf(" [max resp time "); + ND_PRINT((ndo, " [max resp time ")); if (mrt < 600) { - (void)printf("%.1fs", mrt * 0.1); + ND_PRINT((ndo, "%.1fs", mrt * 0.1)); } else { - relts_print(mrt / 10); + relts_print(ndo, mrt / 10); } - (void)printf("]"); + ND_PRINT((ndo, "]")); } - TCHECK2(bp[4], 4); + ND_TCHECK2(bp[4], 4); if (EXTRACT_32BITS(&bp[4]) == 0) return; - (void)printf(" [gaddr %s", ipaddr_string(&bp[4])); - TCHECK2(bp[10], 2); + ND_PRINT((ndo, " [gaddr %s", ipaddr_string(ndo, &bp[4]))); + ND_TCHECK2(bp[10], 2); nsrcs = EXTRACT_16BITS(&bp[10]); if (nsrcs > 0) { if (len < 12 + (nsrcs << 2)) - (void)printf(" [invalid number of sources]"); - else if (vflag > 1) { - (void)printf(" {"); + ND_PRINT((ndo, " [invalid number of sources]")); + else if (ndo->ndo_vflag > 1) { + ND_PRINT((ndo, " {")); for (i=0; i<nsrcs; i++) { - TCHECK2(bp[12+(i<<2)], 4); - (void)printf(" %s", ipaddr_string(&bp[12+(i<<2)])); + ND_TCHECK2(bp[12+(i<<2)], 4); + ND_PRINT((ndo, " %s", ipaddr_string(ndo, &bp[12+(i<<2)]))); } - (void)printf(" }"); + ND_PRINT((ndo, " }")); } else - (void)printf(", %d source(s)", nsrcs); + ND_PRINT((ndo, ", %d source(s)", nsrcs)); } - (void)printf("]"); + ND_PRINT((ndo, "]")); return; trunc: - (void)printf("[|igmp]"); - return; + ND_PRINT((ndo, "%s", tstr)); } void -igmp_print(register const u_char *bp, register u_int len) +igmp_print(netdissect_options *ndo, + register const u_char *bp, register u_int len) { struct cksum_vec vec[1]; - if (qflag) { - (void)printf("igmp"); + if (ndo->ndo_qflag) { + ND_PRINT((ndo, "igmp")); return; } - TCHECK(bp[0]); + ND_TCHECK(bp[0]); switch (bp[0]) { case 0x11: - (void)printf("igmp query"); + ND_PRINT((ndo, "igmp query")); if (len >= 12) - print_igmpv3_query(bp, len); + print_igmpv3_query(ndo, bp, len); else { - TCHECK(bp[1]); + ND_TCHECK(bp[1]); if (bp[1]) { - (void)printf(" v2"); + ND_PRINT((ndo, " v2")); if (bp[1] != 100) - (void)printf(" [max resp time %d]", bp[1]); + ND_PRINT((ndo, " [max resp time %d]", bp[1])); } else - (void)printf(" v1"); - TCHECK2(bp[4], 4); + ND_PRINT((ndo, " v1")); + ND_TCHECK2(bp[4], 4); if (EXTRACT_32BITS(&bp[4])) - (void)printf(" [gaddr %s]", ipaddr_string(&bp[4])); + ND_PRINT((ndo, " [gaddr %s]", ipaddr_string(ndo, &bp[4]))); if (len != 8) - (void)printf(" [len %d]", len); + ND_PRINT((ndo, " [len %d]", len)); } break; case 0x12: - TCHECK2(bp[4], 4); - (void)printf("igmp v1 report %s", ipaddr_string(&bp[4])); + ND_TCHECK2(bp[4], 4); + ND_PRINT((ndo, "igmp v1 report %s", ipaddr_string(ndo, &bp[4]))); if (len != 8) - (void)printf(" [len %d]", len); + ND_PRINT((ndo, " [len %d]", len)); break; case 0x16: - TCHECK2(bp[4], 4); - (void)printf("igmp v2 report %s", ipaddr_string(&bp[4])); + ND_TCHECK2(bp[4], 4); + ND_PRINT((ndo, "igmp v2 report %s", ipaddr_string(ndo, &bp[4]))); break; case 0x22: - (void)printf("igmp v3 report"); - print_igmpv3_report(bp, len); + ND_PRINT((ndo, "igmp v3 report")); + print_igmpv3_report(ndo, bp, len); break; case 0x17: - TCHECK2(bp[4], 4); - (void)printf("igmp leave %s", ipaddr_string(&bp[4])); + ND_TCHECK2(bp[4], 4); + ND_PRINT((ndo, "igmp leave %s", ipaddr_string(ndo, &bp[4]))); break; case 0x13: - (void)printf("igmp dvmrp"); + ND_PRINT((ndo, "igmp dvmrp")); if (len < 8) - (void)printf(" [len %d]", len); + ND_PRINT((ndo, " [len %d]", len)); else - dvmrp_print(bp, len); + dvmrp_print(ndo, bp, len); break; case 0x14: - (void)printf("igmp pimv1"); - pimv1_print(bp, len); + ND_PRINT((ndo, "igmp pimv1")); + pimv1_print(ndo, bp, len); break; case 0x1e: - print_mresp(bp, len); + print_mresp(ndo, bp, len); break; case 0x1f: - print_mtrace(bp, len); + print_mtrace(ndo, bp, len); break; default: - (void)printf("igmp-%d", bp[0]); + ND_PRINT((ndo, "igmp-%d", bp[0])); break; } - if (vflag && TTEST2(bp[0], len)) { + if (ndo->ndo_vflag && ND_TTEST2(bp[0], len)) { /* Check the IGMP checksum */ vec[0].ptr = bp; vec[0].len = len; if (in_cksum(vec, 1)) - printf(" bad igmp cksum %x!", EXTRACT_16BITS(&bp[2])); + ND_PRINT((ndo, " bad igmp cksum %x!", EXTRACT_16BITS(&bp[2]))); } return; trunc: - fputs("[|igmp]", stdout); + ND_PRINT((ndo, "%s", tstr)); } |