diff options
Diffstat (limited to 'contrib/tcpdump/print-udp.c')
-rw-r--r-- | contrib/tcpdump/print-udp.c | 705 |
1 files changed, 0 insertions, 705 deletions
diff --git a/contrib/tcpdump/print-udp.c b/contrib/tcpdump/print-udp.c deleted file mode 100644 index 3f08a1c..0000000 --- a/contrib/tcpdump/print-udp.c +++ /dev/null @@ -1,705 +0,0 @@ -/* - * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 - * 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: (1) source code distributions - * retain the above copyright notice and this paragraph in its entirety, (2) - * distributions including binary code include the above copyright notice and - * this paragraph in its entirety in the documentation or other materials - * provided with the distribution, and (3) all advertising materials mentioning - * features or use of this software display the following acknowledgement: - * ``This product includes software developed by the University of California, - * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of - * the University nor the names of its contributors may be used to endorse - * or promote products derived from this software without specific prior - * written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.138.2.1 2007/03/28 07:45:46 hannes Exp $ (LBL)"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <tcpdump-stdinc.h> - -#ifdef SEGSIZE -#undef SEGSIZE -#endif -#include <arpa/tftp.h> - -#include <stdio.h> -#include <string.h> - -#include "interface.h" -#include "addrtoname.h" -#include "extract.h" -#include "appletalk.h" - -#include "udp.h" - -#include "ip.h" -#ifdef INET6 -#include "ip6.h" -#endif -#include "ipproto.h" -#include "rpc_auth.h" -#include "rpc_msg.h" - -#include "nameser.h" -#include "nfs.h" -#include "bootp.h" - -struct rtcphdr { - u_int16_t rh_flags; /* T:2 P:1 CNT:5 PT:8 */ - u_int16_t rh_len; /* length of message (in words) */ - u_int32_t rh_ssrc; /* synchronization src id */ -}; - -typedef struct { - u_int32_t upper; /* more significant 32 bits */ - u_int32_t lower; /* less significant 32 bits */ -} ntp64; - -/* - * Sender report. - */ -struct rtcp_sr { - ntp64 sr_ntp; /* 64-bit ntp timestamp */ - u_int32_t sr_ts; /* reference media timestamp */ - u_int32_t sr_np; /* no. packets sent */ - u_int32_t sr_nb; /* no. bytes sent */ -}; - -/* - * Receiver report. - * Time stamps are middle 32-bits of ntp timestamp. - */ -struct rtcp_rr { - u_int32_t rr_srcid; /* sender being reported */ - u_int32_t rr_nl; /* no. packets lost */ - u_int32_t rr_ls; /* extended last seq number received */ - u_int32_t rr_dv; /* jitter (delay variance) */ - u_int32_t rr_lsr; /* orig. ts from last rr from this src */ - u_int32_t rr_dlsr; /* time from recpt of last rr to xmit time */ -}; - -/*XXX*/ -#define RTCP_PT_SR 200 -#define RTCP_PT_RR 201 -#define RTCP_PT_SDES 202 -#define RTCP_SDES_CNAME 1 -#define RTCP_SDES_NAME 2 -#define RTCP_SDES_EMAIL 3 -#define RTCP_SDES_PHONE 4 -#define RTCP_SDES_LOC 5 -#define RTCP_SDES_TOOL 6 -#define RTCP_SDES_NOTE 7 -#define RTCP_SDES_PRIV 8 -#define RTCP_PT_BYE 203 -#define RTCP_PT_APP 204 - -static void -vat_print(const void *hdr, register const struct udphdr *up) -{ - /* vat/vt audio */ - u_int ts = *(u_int16_t *)hdr; - if ((ts & 0xf060) != 0) { - /* probably vt */ - (void)printf("udp/vt %u %d / %d", - (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)), - ts & 0x3ff, ts >> 10); - } else { - /* probably vat */ - u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]); - u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]); - printf("udp/vat %u c%d %u%s", - (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8), - i0 & 0xffff, - i1, i0 & 0x800000? "*" : ""); - /* audio format */ - if (i0 & 0x1f0000) - printf(" f%d", (i0 >> 16) & 0x1f); - if (i0 & 0x3f000000) - printf(" s%d", (i0 >> 24) & 0x3f); - } -} - -static void -rtp_print(const void *hdr, u_int len, register const struct udphdr *up) -{ - /* rtp v1 or v2 */ - u_int *ip = (u_int *)hdr; - u_int hasopt, hasext, contype, hasmarker; - u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]); - u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]); - u_int dlen = EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8; - const char * ptype; - - ip += 2; - len >>= 2; - len -= 2; - hasopt = 0; - hasext = 0; - if ((i0 >> 30) == 1) { - /* rtp v1 */ - hasopt = i0 & 0x800000; - contype = (i0 >> 16) & 0x3f; - hasmarker = i0 & 0x400000; - ptype = "rtpv1"; - } else { - /* rtp v2 */ - hasext = i0 & 0x10000000; - contype = (i0 >> 16) & 0x7f; - hasmarker = i0 & 0x800000; - dlen -= 4; - ptype = "rtp"; - ip += 1; - len -= 1; - } - printf("udp/%s %d c%d %s%s %d %u", - ptype, - dlen, - contype, - (hasopt || hasext)? "+" : "", - hasmarker? "*" : "", - i0 & 0xffff, - i1); - if (vflag) { - printf(" %u", EXTRACT_32BITS(&((u_int *)hdr)[2])); - if (hasopt) { - u_int i2, optlen; - do { - i2 = ip[0]; - optlen = (i2 >> 16) & 0xff; - if (optlen == 0 || optlen > len) { - printf(" !opt"); - return; - } - ip += optlen; - len -= optlen; - } while ((int)i2 >= 0); - } - if (hasext) { - u_int i2, extlen; - i2 = ip[0]; - extlen = (i2 & 0xffff) + 1; - if (extlen > len) { - printf(" !ext"); - return; - } - ip += extlen; - } - if (contype == 0x1f) /*XXX H.261 */ - printf(" 0x%04x", ip[0] >> 16); - } -} - -static const u_char * -rtcp_print(const u_char *hdr, const u_char *ep) -{ - /* rtp v2 control (rtcp) */ - struct rtcp_rr *rr = 0; - struct rtcp_sr *sr; - struct rtcphdr *rh = (struct rtcphdr *)hdr; - u_int len; - u_int16_t flags; - int cnt; - double ts, dts; - if ((u_char *)(rh + 1) > ep) { - printf(" [|rtcp]"); - return (ep); - } - len = (EXTRACT_16BITS(&rh->rh_len) + 1) * 4; - flags = EXTRACT_16BITS(&rh->rh_flags); - cnt = (flags >> 8) & 0x1f; - switch (flags & 0xff) { - case RTCP_PT_SR: - sr = (struct rtcp_sr *)(rh + 1); - printf(" sr"); - if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh)) - printf(" [%d]", len); - if (vflag) - printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc)); - if ((u_char *)(sr + 1) > ep) { - printf(" [|rtcp]"); - return (ep); - } - ts = (double)(EXTRACT_32BITS(&sr->sr_ntp.upper)) + - ((double)(EXTRACT_32BITS(&sr->sr_ntp.lower)) / - 4294967296.0); - printf(" @%.2f %u %up %ub", ts, EXTRACT_32BITS(&sr->sr_ts), - EXTRACT_32BITS(&sr->sr_np), EXTRACT_32BITS(&sr->sr_nb)); - rr = (struct rtcp_rr *)(sr + 1); - break; - case RTCP_PT_RR: - printf(" rr"); - if (len != cnt * sizeof(*rr) + sizeof(*rh)) - printf(" [%d]", len); - rr = (struct rtcp_rr *)(rh + 1); - if (vflag) - printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc)); - break; - case RTCP_PT_SDES: - printf(" sdes %d", len); - if (vflag) - printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc)); - cnt = 0; - break; - case RTCP_PT_BYE: - printf(" bye %d", len); - if (vflag) - printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc)); - cnt = 0; - break; - default: - printf(" type-0x%x %d", flags & 0xff, len); - cnt = 0; - break; - } - if (cnt > 1) - printf(" c%d", cnt); - while (--cnt >= 0) { - if ((u_char *)(rr + 1) > ep) { - printf(" [|rtcp]"); - return (ep); - } - if (vflag) - printf(" %u", EXTRACT_32BITS(&rr->rr_srcid)); - ts = (double)(EXTRACT_32BITS(&rr->rr_lsr)) / 65536.; - dts = (double)(EXTRACT_32BITS(&rr->rr_dlsr)) / 65536.; - printf(" %ul %us %uj @%.2f+%.2f", - EXTRACT_32BITS(&rr->rr_nl) & 0x00ffffff, - EXTRACT_32BITS(&rr->rr_ls), - EXTRACT_32BITS(&rr->rr_dv), ts, dts); - } - return (hdr + len); -} - -static int udp_cksum(register const struct ip *ip, - register const struct udphdr *up, - register u_int len) -{ - union phu { - struct phdr { - u_int32_t src; - u_int32_t dst; - u_char mbz; - u_char proto; - u_int16_t len; - } ph; - u_int16_t pa[6]; - } phu; - register const u_int16_t *sp; - - /* pseudo-header.. */ - phu.ph.len = htons((u_int16_t)len); - phu.ph.mbz = 0; - phu.ph.proto = IPPROTO_UDP; - memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t)); - if (IP_HL(ip) == 5) - memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t)); - else - phu.ph.dst = ip_finddst(ip); - - sp = &phu.pa[0]; - return in_cksum((u_short *)up, len, - sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]); -} - -#ifdef INET6 -static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up, - u_int len) -{ - size_t i; - register const u_int16_t *sp; - u_int32_t sum; - union { - struct { - struct in6_addr ph_src; - struct in6_addr ph_dst; - u_int32_t ph_len; - u_int8_t ph_zero[3]; - u_int8_t ph_nxt; - } ph; - u_int16_t pa[20]; - } phu; - - /* pseudo-header */ - memset(&phu, 0, sizeof(phu)); - phu.ph.ph_src = ip6->ip6_src; - phu.ph.ph_dst = ip6->ip6_dst; - phu.ph.ph_len = htonl(len); - phu.ph.ph_nxt = IPPROTO_UDP; - - sum = 0; - for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++) - sum += phu.pa[i]; - - sp = (const u_int16_t *)up; - - for (i = 0; i < (len & ~1); i += 2) - sum += *sp++; - - if (len & 1) - sum += htons((*(const u_int8_t *)sp) << 8); - - while (sum > 0xffff) - sum = (sum & 0xffff) + (sum >> 16); - sum = ~sum & 0xffff; - - return (sum); -} -#endif - -static void -udpipaddr_print(const struct ip *ip, int sport, int dport) -{ -#ifdef INET6 - const struct ip6_hdr *ip6; - - if (IP_V(ip) == 6) - ip6 = (const struct ip6_hdr *)ip; - else - ip6 = NULL; - - if (ip6) { - if (ip6->ip6_nxt == IPPROTO_UDP) { - if (sport == -1) { - (void)printf("%s > %s: ", - ip6addr_string(&ip6->ip6_src), - ip6addr_string(&ip6->ip6_dst)); - } else { - (void)printf("%s.%s > %s.%s: ", - ip6addr_string(&ip6->ip6_src), - udpport_string(sport), - ip6addr_string(&ip6->ip6_dst), - udpport_string(dport)); - } - } else { - if (sport != -1) { - (void)printf("%s > %s: ", - udpport_string(sport), - udpport_string(dport)); - } - } - } else -#endif /*INET6*/ - { - if (ip->ip_p == IPPROTO_UDP) { - if (sport == -1) { - (void)printf("%s > %s: ", - ipaddr_string(&ip->ip_src), - ipaddr_string(&ip->ip_dst)); - } else { - (void)printf("%s.%s > %s.%s: ", - ipaddr_string(&ip->ip_src), - udpport_string(sport), - ipaddr_string(&ip->ip_dst), - udpport_string(dport)); - } - } else { - if (sport != -1) { - (void)printf("%s > %s: ", - udpport_string(sport), - udpport_string(dport)); - } - } - } -} - -void -udp_print(register const u_char *bp, u_int length, - register const u_char *bp2, int fragmented) -{ - register const struct udphdr *up; - register const struct ip *ip; - register const u_char *cp; - register const u_char *ep = bp + length; - u_int16_t sport, dport, ulen; -#ifdef INET6 - register const struct ip6_hdr *ip6; -#endif - - if (ep > snapend) - ep = snapend; - up = (struct udphdr *)bp; - ip = (struct ip *)bp2; -#ifdef INET6 - if (IP_V(ip) == 6) - ip6 = (struct ip6_hdr *)bp2; - else - ip6 = NULL; -#endif /*INET6*/ - cp = (u_char *)(up + 1); - if (!TTEST(up->uh_dport)) { - udpipaddr_print(ip, -1, -1); - (void)printf("[|udp]"); - return; - } - - sport = EXTRACT_16BITS(&up->uh_sport); - dport = EXTRACT_16BITS(&up->uh_dport); - - if (length < sizeof(struct udphdr)) { - udpipaddr_print(ip, sport, dport); - (void)printf("truncated-udp %d", length); - return; - } - length -= sizeof(struct udphdr); - - if (cp > snapend) { - udpipaddr_print(ip, sport, dport); - (void)printf("[|udp]"); - return; - } - - ulen = EXTRACT_16BITS(&up->uh_ulen); - if (ulen < 8) { - udpipaddr_print(ip, sport, dport); - (void)printf("truncated-udplength %d", ulen); - return; - } - if (packettype) { - register struct sunrpc_msg *rp; - enum sunrpc_msg_type direction; - - switch (packettype) { - - case PT_VAT: - udpipaddr_print(ip, sport, dport); - vat_print((void *)(up + 1), up); - break; - - case PT_WB: - udpipaddr_print(ip, sport, dport); - wb_print((void *)(up + 1), length); - break; - - case PT_RPC: - rp = (struct sunrpc_msg *)(up + 1); - direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction); - if (direction == SUNRPC_CALL) - sunrpcrequest_print((u_char *)rp, length, - (u_char *)ip); - else - nfsreply_print((u_char *)rp, length, - (u_char *)ip); /*XXX*/ - break; - - case PT_RTP: - udpipaddr_print(ip, sport, dport); - rtp_print((void *)(up + 1), length, up); - break; - - case PT_RTCP: - udpipaddr_print(ip, sport, dport); - while (cp < ep) - cp = rtcp_print(cp, ep); - break; - - case PT_SNMP: - udpipaddr_print(ip, sport, dport); - snmp_print((const u_char *)(up + 1), length); - break; - - case PT_CNFP: - udpipaddr_print(ip, sport, dport); - cnfp_print(cp, (const u_char *)ip); - break; - - case PT_TFTP: - udpipaddr_print(ip, sport, dport); - tftp_print(cp, length); - break; - - case PT_AODV: - udpipaddr_print(ip, sport, dport); - aodv_print((const u_char *)(up + 1), length, -#ifdef INET6 - ip6 != NULL); -#else - 0); -#endif - break; - } - return; - } - - if (!qflag) { - register struct sunrpc_msg *rp; - enum sunrpc_msg_type direction; - - rp = (struct sunrpc_msg *)(up + 1); - if (TTEST(rp->rm_direction)) { - direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction); - if (dport == NFS_PORT && direction == SUNRPC_CALL) { - nfsreq_print((u_char *)rp, length, - (u_char *)ip); - return; - } - if (sport == NFS_PORT && direction == SUNRPC_REPLY) { - nfsreply_print((u_char *)rp, length, - (u_char *)ip); - return; - } -#ifdef notdef - if (dport == SUNRPC_PORT && direction == SUNRPC_CALL) { - sunrpcrequest_print((u_char *)rp, length, (u_char *)ip); - return; - } -#endif - } - if (TTEST(((struct LAP *)cp)->type) && - ((struct LAP *)cp)->type == lapDDP && - (atalk_port(sport) || atalk_port(dport))) { - if (vflag) - fputs("kip ", stdout); - llap_print(cp, length); - return; - } - } - udpipaddr_print(ip, sport, dport); - - if (IP_V(ip) == 4 && (vflag > 1) && !fragmented) { - int sum = up->uh_sum; - if (sum == 0) { - (void)printf("[no cksum] "); - } else if (TTEST2(cp[0], length)) { - sum = udp_cksum(ip, up, length + sizeof(struct udphdr)); - if (sum != 0) - (void)printf("[bad udp cksum %x!] ", sum); - else - (void)printf("[udp sum ok] "); - } - } -#ifdef INET6 - if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) { - int sum = up->uh_sum; - /* for IPv6, UDP checksum is mandatory */ - if (TTEST2(cp[0], length)) { - sum = udp6_cksum(ip6, up, length + sizeof(struct udphdr)); - if (sum != 0) - (void)printf("[bad udp cksum %x!] ", sum); - else - (void)printf("[udp sum ok] "); - } - } -#endif - - if (!qflag) { -#define ISPORT(p) (dport == (p) || sport == (p)) - if (ISPORT(NAMESERVER_PORT)) - ns_print((const u_char *)(up + 1), length, 0); - else if (ISPORT(MULTICASTDNS_PORT)) - ns_print((const u_char *)(up + 1), length, 1); - else if (ISPORT(TIMED_PORT)) - timed_print((const u_char *)(up + 1)); - else if (ISPORT(TFTP_PORT)) - tftp_print((const u_char *)(up + 1), length); - else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS)) - bootp_print((const u_char *)(up + 1), length); - else if (ISPORT(RIP_PORT)) - rip_print((const u_char *)(up + 1), length); - else if (ISPORT(AODV_PORT)) - aodv_print((const u_char *)(up + 1), length, -#ifdef INET6 - ip6 != NULL); -#else - 0); -#endif - else if (ISPORT(ISAKMP_PORT)) - isakmp_print(gndo, (const u_char *)(up + 1), length, bp2); - else if (ISPORT(ISAKMP_PORT_NATT)) - isakmp_rfc3948_print(gndo, (const u_char *)(up + 1), length, bp2); -#if 1 /*???*/ - else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2)) - isakmp_print(gndo, (const u_char *)(up + 1), length, bp2); -#endif - else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT)) - snmp_print((const u_char *)(up + 1), length); - else if (ISPORT(NTP_PORT)) - ntp_print((const u_char *)(up + 1), length); - else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT)) - krb_print((const void *)(up + 1)); - else if (ISPORT(L2TP_PORT)) - l2tp_print((const u_char *)(up + 1), length); -#ifdef TCPDUMP_DO_SMB - else if (ISPORT(NETBIOS_NS_PORT)) - nbt_udp137_print((const u_char *)(up + 1), length); - else if (ISPORT(NETBIOS_DGRAM_PORT)) - nbt_udp138_print((const u_char *)(up + 1), length); -#endif - else if (dport == 3456) - vat_print((const void *)(up + 1), up); - else if (ISPORT(ZEPHYR_SRV_PORT) || ISPORT(ZEPHYR_CLT_PORT)) - zephyr_print((const void *)(up + 1), length); - /* - * Since there are 10 possible ports to check, I think - * a <> test would be more efficient - */ - else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) || - (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH)) - rx_print((const void *)(up + 1), length, sport, dport, - (u_char *) ip); -#ifdef INET6 - else if (ISPORT(RIPNG_PORT)) - ripng_print((const u_char *)(up + 1), length); - else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) { - dhcp6_print((const u_char *)(up + 1), length); - } -#endif /*INET6*/ - /* - * Kludge in test for whiteboard packets. - */ - else if (dport == 4567) - wb_print((const void *)(up + 1), length); - else if (ISPORT(CISCO_AUTORP_PORT)) - cisco_autorp_print((const void *)(up + 1), length); - else if (ISPORT(RADIUS_PORT) || - ISPORT(RADIUS_NEW_PORT) || - ISPORT(RADIUS_ACCOUNTING_PORT) || - ISPORT(RADIUS_NEW_ACCOUNTING_PORT) ) - radius_print((const u_char *)(up+1), length); - else if (dport == HSRP_PORT) - hsrp_print((const u_char *)(up + 1), length); - else if (ISPORT(LWRES_PORT)) - lwres_print((const u_char *)(up + 1), length); - else if (ISPORT(LDP_PORT)) - ldp_print((const u_char *)(up + 1), length); - else if (ISPORT(OLSR_PORT)) - olsr_print((const u_char *)(up + 1), length); - else if (ISPORT(MPLS_LSP_PING_PORT)) - lspping_print((const u_char *)(up + 1), length); - else if (dport == BFD_CONTROL_PORT || - dport == BFD_ECHO_PORT ) - bfd_print((const u_char *)(up+1), length, dport); - else if (ISPORT(LMP_PORT)) - lmp_print((const u_char *)(up + 1), length); - else if (ISPORT(SIP_PORT)) - sip_print((const u_char *)(up + 1), length); - else if (ISPORT(SYSLOG_PORT)) - syslog_print((const u_char *)(up + 1), length); - else - (void)printf("UDP, length %u", - (u_int32_t)(ulen - sizeof(*up))); -#undef ISPORT - } else - (void)printf("UDP, length %u", (u_int32_t)(ulen - sizeof(*up))); -} - - -/* - * Local Variables: - * c-style: whitesmith - * c-basic-offset: 8 - * End: - */ - |