/* \summary: UDP printer */
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
#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_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 const u_char *
-rtcp_print(netdissect_options *ndo, const u_char *hdr, const u_char *ep)
+rtcp_print(netdissect_options *ndo, const u_char *hdr)
{
/* rtp v2 control (rtcp) */
const struct rtcp_rr *rr = 0;
const struct rtcphdr *rh = (const struct rtcphdr *)hdr;
u_int len;
uint16_t flags;
+ uint32_t ssrc;
u_int cnt;
double ts, dts;
ndo->ndo_protocol = "rtcp";
- if ((const u_char *)(rh + 1) > ep)
- goto trunc;
- ND_TCHECK_SIZE(rh);
len = (GET_BE_U_2(rh->rh_len) + 1) * 4;
flags = GET_BE_U_2(rh->rh_flags);
cnt = (flags >> 8) & 0x1f;
+ ssrc = GET_BE_U_4(rh->rh_ssrc);
switch (flags & 0xff) {
case RTCP_PT_SR:
sr = (const struct rtcp_sr *)(rh + 1);
if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
ND_PRINT(" [%u]", len);
if (ndo->ndo_vflag)
- ND_PRINT(" %u", GET_BE_U_4(rh->rh_ssrc));
- if ((const u_char *)(sr + 1) > ep)
- goto trunc;
- ND_TCHECK_SIZE(sr);
+ ND_PRINT(" %u", ssrc);
ts = (double)(GET_BE_U_4(sr->sr_ntp.upper)) +
((double)(GET_BE_U_4(sr->sr_ntp.lower)) /
FMAXINT);
ND_PRINT(" [%u]", len);
rr = (const struct rtcp_rr *)(rh + 1);
if (ndo->ndo_vflag)
- ND_PRINT(" %u", GET_BE_U_4(rh->rh_ssrc));
+ ND_PRINT(" %u", ssrc);
break;
case RTCP_PT_SDES:
ND_PRINT(" sdes %u", len);
if (ndo->ndo_vflag)
- ND_PRINT(" %u", GET_BE_U_4(rh->rh_ssrc));
+ ND_PRINT(" %u", ssrc);
cnt = 0;
break;
case RTCP_PT_BYE:
ND_PRINT(" bye %u", len);
if (ndo->ndo_vflag)
- ND_PRINT(" %u", GET_BE_U_4(rh->rh_ssrc));
+ ND_PRINT(" %u", ssrc);
cnt = 0;
break;
default:
if (cnt > 1)
ND_PRINT(" c%u", cnt);
while (cnt != 0) {
- if ((const u_char *)(rr + 1) > ep)
- goto trunc;
- ND_TCHECK_SIZE(rr);
if (ndo->ndo_vflag)
ND_PRINT(" %u", GET_BE_U_4(rr->rr_srcid));
ts = (double)(GET_BE_U_4(rr->rr_lsr)) / 65536.;
cnt--;
}
return (hdr + len);
-
-trunc:
- nd_print_trunc(ndo);
- return ep;
}
static uint16_t udp_cksum(netdissect_options *ndo, const struct ip *ip,
const u_char *ep = ndo->ndo_snapend;
uint16_t sport, dport;
u_int ulen;
+ uint16_t udp_sum;
const struct ip6_hdr *ip6;
ndo->ndo_protocol = "udp";
ip6 = NULL;
if (!ND_TTEST_2(up->uh_dport)) {
udpipaddr_noport_print(ndo, ip);
- goto trunc;
+ nd_trunc_longjmp(ndo);
}
sport = GET_BE_U_2(up->uh_sport);
if (ndo->ndo_packettype != PT_RPC)
udpipaddr_print(ndo, ip, sport, dport);
- if (length < sizeof(struct udphdr)) {
- ND_PRINT("truncated-udp %u", length);
- return;
- }
- if (!ND_TTEST_2(up->uh_ulen)) {
- goto trunc;
- }
+ ND_ICHECKMSG_ZU("undersized-udp", length, <, sizeof(struct udphdr));
ulen = GET_BE_U_2(up->uh_ulen);
+ udp_sum = GET_BE_U_2(up->uh_sum);
/*
* IPv6 Jumbo Datagrams; see RFC 2675.
* If the length is zero, and the length provided to us is
*/
if (ulen == 0 && length > 65535)
ulen = length;
- if (ulen < sizeof(struct udphdr)) {
- ND_PRINT("truncated-udplength %u", ulen);
- return;
- }
+ ND_ICHECKMSG_ZU("undersized-udplength", ulen, <,
+ sizeof(struct udphdr));
ulen -= sizeof(struct udphdr);
length -= sizeof(struct udphdr);
if (ulen < length)
length = ulen;
cp = (const u_char *)(up + 1);
- if (cp > ndo->ndo_snapend) {
- goto trunc;
- }
if (ndo->ndo_packettype) {
const struct sunrpc_msg *rp;
case PT_RTCP:
while (cp < ep)
- cp = rtcp_print(ndo, cp, ep);
+ cp = rtcp_print(ndo, cp);
break;
case PT_SNMP:
break;
case PT_AODV:
- aodv_print(ndo, cp, length,
- ip6 != NULL);
+ aodv_print(ndo, cp, length, IP_V(ip) == 6);
break;
case PT_RADIUS:
/* over_tcp: FALSE, is_mdns: FALSE */
domain_print(ndo, cp, length, FALSE, FALSE);
break;
+ case PT_QUIC:
+ quic_print(ndo, cp);
+ break;
}
return;
}
if (ndo->ndo_vflag && !ndo->ndo_Kflag && !fragmented) {
/* Check the checksum, if possible. */
- uint16_t sum, udp_sum;
+ uint16_t sum;
/*
* XXX - do this even if vflag == 1?
* TCP does, and we do so for UDP-over-IPv6.
*/
if (IP_V(ip) == 4 && (ndo->ndo_vflag > 1)) {
- udp_sum = GET_BE_U_2(up->uh_sum);
if (udp_sum == 0) {
ND_PRINT("[no cksum] ");
} else if (ND_TTEST_LEN(cp, length)) {
} else
ND_PRINT("[udp sum ok] ");
}
- }
- else if (IP_V(ip) == 6) {
+ } else if (IP_V(ip) == 6) {
/* for IPv6, UDP checksum is mandatory */
if (ND_TTEST_LEN(cp, length)) {
sum = udp6_cksum(ndo, ip6, up, length + sizeof(struct udphdr));
- udp_sum = GET_BE_U_2(up->uh_sum);
if (sum != 0) {
ND_PRINT("[bad udp cksum 0x%04x -> 0x%04x!] ",
if (IS_SRC_OR_DST_PORT(NAMESERVER_PORT))
/* over_tcp: FALSE, is_mdns: FALSE */
domain_print(ndo, cp, length, FALSE, FALSE);
- else if (IS_SRC_OR_DST_PORT(MULTICASTDNS_PORT))
- /* over_tcp: FALSE, is_mdns: TRUE */
- domain_print(ndo, cp, length, FALSE, TRUE);
- else if (IS_SRC_OR_DST_PORT(TIMED_PORT))
- timed_print(ndo, (const u_char *)cp);
+ else if (IS_SRC_OR_DST_PORT(BOOTPC_PORT) ||
+ IS_SRC_OR_DST_PORT(BOOTPS_PORT))
+ bootp_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(TFTP_PORT))
tftp_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(BOOTPC_PORT) || IS_SRC_OR_DST_PORT(BOOTPS_PORT))
- bootp_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(KERBEROS_PORT))
+ krb_print(ndo, (const u_char *)cp);
+ else if (IS_SRC_OR_DST_PORT(NTP_PORT))
+ ntp_print(ndo, cp, length);
+#ifdef ENABLE_SMB
+ else if (IS_SRC_OR_DST_PORT(NETBIOS_NS_PORT))
+ nbt_udp137_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(NETBIOS_DGRAM_PORT))
+ nbt_udp138_print(ndo, cp, length);
+#endif
+ else if (IS_SRC_OR_DST_PORT(SNMP_PORT) ||
+ IS_SRC_OR_DST_PORT(SNMPTRAP_PORT))
+ snmp_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(PTP_EVENT_PORT) ||
+ IS_SRC_OR_DST_PORT(PTP_GENERAL_PORT))
+ ptp_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(CISCO_AUTORP_PORT))
+ cisco_autorp_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(ISAKMP_PORT))
+ isakmp_print(ndo, cp, length, bp2);
+ else if (IS_SRC_OR_DST_PORT(SYSLOG_PORT))
+ syslog_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(RIP_PORT))
rip_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(RIPNG_PORT))
+ ripng_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(TIMED_PORT))
+ timed_print(ndo, (const u_char *)cp);
+ else if (IS_SRC_OR_DST_PORT(DHCP6_SERV_PORT) ||
+ IS_SRC_OR_DST_PORT(DHCP6_CLI_PORT))
+ dhcp6_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(LDP_PORT))
+ ldp_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(AODV_PORT))
- aodv_print(ndo, cp, length,
- ip6 != NULL);
- else if (IS_SRC_OR_DST_PORT(ISAKMP_PORT))
- isakmp_print(ndo, cp, length, bp2);
+ aodv_print(ndo, cp, length, IP_V(ip) == 6);
+ else if (IS_SRC_OR_DST_PORT(OLSR_PORT))
+ olsr_print(ndo, cp, length, IP_V(ip) == 6);
+ else if (IS_SRC_OR_DST_PORT(LMP_PORT))
+ lmp_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(KERBEROS_SEC_PORT))
+ krb_print(ndo, (const u_char *)cp);
+ else if (IS_SRC_OR_DST_PORT(LWRES_PORT))
+ lwres_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(MULTICASTDNS_PORT))
+ /* over_tcp: FALSE, is_mdns: TRUE */
+ domain_print(ndo, cp, length, FALSE, TRUE);
else if (IS_SRC_OR_DST_PORT(ISAKMP_PORT_NATT))
isakmp_rfc3948_print(ndo, cp, length, bp2, IP_V(ip), fragmented, ttl_hl);
else if (IS_SRC_OR_DST_PORT(ISAKMP_PORT_USER1) || IS_SRC_OR_DST_PORT(ISAKMP_PORT_USER2))
isakmp_print(ndo, cp, length, bp2);
- else if (IS_SRC_OR_DST_PORT(SNMP_PORT) || IS_SRC_OR_DST_PORT(SNMPTRAP_PORT))
- snmp_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(NTP_PORT))
- ntp_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(KERBEROS_PORT) || IS_SRC_OR_DST_PORT(KERBEROS_SEC_PORT))
- krb_print(ndo, (const u_char *)cp);
else if (IS_SRC_OR_DST_PORT(L2TP_PORT))
l2tp_print(ndo, cp, length);
-#ifdef ENABLE_SMB
- else if (IS_SRC_OR_DST_PORT(NETBIOS_NS_PORT))
- nbt_udp137_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(NETBIOS_DGRAM_PORT))
- nbt_udp138_print(ndo, cp, length);
-#endif
else if (dport == VAT_PORT)
vat_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(ZEPHYR_SRV_PORT) || IS_SRC_OR_DST_PORT(ZEPHYR_CLT_PORT))
(dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
rx_print(ndo, cp, length, sport, dport,
(const u_char *) ip);
- else if (IS_SRC_OR_DST_PORT(RIPNG_PORT))
- ripng_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(DHCP6_SERV_PORT) || IS_SRC_OR_DST_PORT(DHCP6_CLI_PORT))
- dhcp6_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(AHCP_PORT))
ahcp_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(BABEL_PORT) || IS_SRC_OR_DST_PORT(BABEL_PORT_OLD))
*/
else if (dport == WB_PORT)
wb_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(CISCO_AUTORP_PORT))
- cisco_autorp_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(RADIUS_PORT) ||
IS_SRC_OR_DST_PORT(RADIUS_NEW_PORT) ||
IS_SRC_OR_DST_PORT(RADIUS_ACCOUNTING_PORT) ||
radius_print(ndo, cp, length);
else if (dport == HSRP_PORT)
hsrp_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(LWRES_PORT))
- lwres_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(LDP_PORT))
- ldp_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(OLSR_PORT))
- olsr_print(ndo, cp, length,
- (IP_V(ip) == 6) ? 1 : 0);
else if (IS_SRC_OR_DST_PORT(MPLS_LSP_PING_PORT))
lspping_print(ndo, cp, length);
- else if (sport == BCM_LI_PORT)
- bcm_li_print(ndo, cp, length);
else if (dport == BFD_CONTROL_PORT ||
dport == BFD_MULTIHOP_PORT ||
dport == BFD_LAG_PORT ||
+ dport == SBFD_PORT ||
dport == BFD_ECHO_PORT )
bfd_print(ndo, cp, length, dport);
- else if (IS_SRC_OR_DST_PORT(LMP_PORT))
- lmp_print(ndo, cp, length);
+ else if (sport == SBFD_PORT)
+ bfd_print(ndo, cp, length, sport);
else if (IS_SRC_OR_DST_PORT(VQP_PORT))
vqp_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(SFLOW_PORT))
lwapp_data_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(SIP_PORT))
sip_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(SYSLOG_PORT))
- syslog_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(OTV_PORT))
otv_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(VXLAN_PORT))
vxlan_print(ndo, cp, length);
- else if (IS_SRC_OR_DST_PORT(GENEVE_PORT))
+ else if (dport == GENEVE_PORT)
geneve_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(LISP_CONTROL_PORT))
lisp_print(ndo, cp, length);
zep_print(ndo, cp, length);
else if (IS_SRC_OR_DST_PORT(MPLS_PORT))
mpls_print(ndo, cp, length);
- else if (ND_TTEST_1(((const struct LAP *)cp)->type) &&
- GET_U_1(((const struct LAP *)cp)->type) == lapDDP &&
- (atalk_port(sport) || atalk_port(dport))) {
+ else if ((atalk_port(sport) || atalk_port(dport)) &&
+ GET_U_1(((const struct LAP *)cp)->type) == lapDDP) {
if (ndo->ndo_vflag)
ND_PRINT("kip ");
llap_print(ndo, cp, length);
- } else if (IS_SRC_OR_DST_PORT(PTP_EVENT_PORT) ||
- IS_SRC_OR_DST_PORT(PTP_GENERAL_PORT)) {
- ptp_print(ndo, cp, length);
} else if (IS_SRC_OR_DST_PORT(SOMEIP_PORT))
someip_print(ndo, cp, length);
+ else if (IS_SRC_OR_DST_PORT(HTTPS_PORT) &&
+ quic_detect(ndo, cp, length))
+ quic_print(ndo, cp);
+ else if (sport == BCM_LI_PORT)
+ bcm_li_print(ndo, cp, length);
else {
if (ulen > length && !fragmented)
ND_PRINT("UDP, bad length %u > %u",
}
return;
-trunc:
- nd_print_trunc(ndo);
+invalid:
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff