* o BAP support
*/
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
-#ifdef __bsdi__
-#include <net/slcompress.h>
-#include <net/if_ppp.h>
-#endif
-
#include <stdlib.h>
#include "netdissect.h"
"deprecated(12)", /* used to be a Multi-Link-Procedure*/
"Call-Back", /* (13) */
"deprecated(14)", /* used to be a Connect-Time */
- "deprecated(15)", /* used to be a Compund-Frames */
+ "deprecated(15)", /* used to be a Compound-Frames */
"deprecated(16)", /* used to be a Nominal-Data-Encap */
"MRRU", /* (17) */
"12-Bit seq #", /* (18) */
if (!ndo->ndo_vflag)
return;
- ND_TCHECK_2(tptr);
len = GET_BE_U_2(tptr);
tptr += 2;
case CPCODES_VEXT:
if (length < 11)
break;
- ND_TCHECK_4(tptr);
ND_PRINT("\n\t Magic-Num 0x%08x", GET_BE_U_4(tptr));
tptr += 4;
- ND_TCHECK_3(tptr);
ND_PRINT(" Vendor: %s (%u)",
tok2str(oui_values,"Unknown",GET_BE_U_3(tptr)),
GET_BE_U_3(tptr));
case CPCODES_PROT_REJ:
if (length < 6)
break;
- ND_TCHECK_2(tptr);
ND_PRINT("\n\t Rejected %s Protocol (0x%04x)",
tok2str(ppptype2str,"unknown", GET_BE_U_2(tptr)),
GET_BE_U_2(tptr));
case CPCODES_DISC_REQ:
if (length < 8)
break;
- ND_TCHECK_4(tptr);
ND_PRINT("\n\t Magic-Num 0x%08x", GET_BE_U_4(tptr));
/* XXX: need to decode Data? - hexdump for now */
if (len > 8) {
case CPCODES_ID:
if (length < 8)
break;
- ND_TCHECK_4(tptr);
ND_PRINT("\n\t Magic-Num 0x%08x", GET_BE_U_4(tptr));
/* RFC 1661 says this is intended to be human readable */
if (len > 8) {
case CPCODES_TIME_REM:
if (length < 12)
break;
- ND_TCHECK_4(tptr);
ND_PRINT("\n\t Magic-Num 0x%08x", GET_BE_U_4(tptr));
- ND_TCHECK_4(tptr + 4);
ND_PRINT(", Seconds-Remaining %us", GET_BE_U_4(tptr + 4));
/* XXX: need to decode Message? */
break;
ND_PRINT(" (length bogus, should be >= 6)");
return len;
}
- ND_TCHECK_3(p + 2);
ND_PRINT(": Vendor: %s (%u)",
tok2str(oui_values,"Unknown",GET_BE_U_3(p + 2)),
GET_BE_U_3(p + 2));
#if 0
- ND_TCHECK_1(p + 5);
ND_PRINT(", kind: 0x%02x", GET_U_1(p + 5));
ND_PRINT(", Value: 0x");
for (i = 0; i < len - 6; i++) {
- ND_TCHECK_1(p + 6 + i);
ND_PRINT("%02x", GET_U_1(p + 6 + i));
}
#endif
ND_PRINT(" (length bogus, should be = 4)");
return len;
}
- ND_TCHECK_2(p + 2);
ND_PRINT(": %u", GET_BE_U_2(p + 2));
break;
case LCPOPT_ACCM:
ND_PRINT(" (length bogus, should be = 6)");
return len;
}
- ND_TCHECK_4(p + 2);
ND_PRINT(": 0x%08x", GET_BE_U_4(p + 2));
break;
case LCPOPT_AP:
ND_PRINT(" (length bogus, should be >= 4)");
return len;
}
- ND_TCHECK_2(p + 2);
ND_PRINT(": %s",
tok2str(ppptype2str, "Unknown Auth Proto (0x04x)", GET_BE_U_2(p + 2)));
switch (GET_BE_U_2(p + 2)) {
case PPP_CHAP:
- ND_TCHECK_1(p + 4);
ND_PRINT(", %s",
tok2str(authalg_values, "Unknown Auth Alg %u", GET_U_1(p + 4)));
break;
ND_PRINT(" (length bogus, should be >= 4)");
return 0;
}
- ND_TCHECK_2(p + 2);
if (GET_BE_U_2(p + 2) == PPP_LQM)
ND_PRINT(": LQR");
else
ND_PRINT(" (length bogus, should be = 6)");
return 0;
}
- ND_TCHECK_4(p + 2);
ND_PRINT(": 0x%08x", GET_BE_U_4(p + 2));
break;
case LCPOPT_PFC:
ND_PRINT(" (length bogus, should be = 4)");
return 0;
}
- ND_TCHECK_2(p + 2);
ND_PRINT(": 0x%04x", GET_BE_U_2(p + 2));
break;
case LCPOPT_CBACK:
ND_PRINT(" (length bogus, should be >= 3)");
return 0;
}
- ND_PRINT(": ");
- ND_TCHECK_1(p + 2);
ND_PRINT(": Callback Operation %s (%u)",
tok2str(ppp_callback_values, "Unknown", GET_U_1(p + 2)),
GET_U_1(p + 2));
ND_PRINT(" (length bogus, should be = 4)");
return 0;
}
- ND_TCHECK_2(p + 2);
ND_PRINT(": %u", GET_BE_U_2(p + 2));
break;
case LCPOPT_MLED:
ND_PRINT(" (length bogus, should be >= 3)");
return 0;
}
- ND_TCHECK_1(p + 2);
switch (GET_U_1(p + 2)) { /* class */
case MEDCLASS_NULL:
ND_PRINT(": Null");
ND_PRINT(" (length bogus, should be = 7)");
return 0;
}
- ND_TCHECK_4(p + 3);
ND_PRINT(": IPv4 %s", GET_IPADDR_STRING(p + 3));
break;
case MEDCLASS_MAC:
ND_PRINT(" (length bogus, should be = 9)");
return 0;
}
- ND_TCHECK_6(p + 3);
- ND_PRINT(": MAC %s", GET_ETHERADDR_STRING(p + 3));
+ ND_PRINT(": MAC %s", GET_MAC48_STRING(p + 3));
break;
case MEDCLASS_MNB:
ND_PRINT(": Magic-Num-Block"); /* XXX */
ND_PRINT("[|chap]");
return;
} else if (length < 4) {
- ND_TCHECK_1(p);
ND_PRINT("[|chap 0x%02x]", GET_U_1(p));
return;
}
- ND_TCHECK_1(p);
code = GET_U_1(p);
ND_PRINT("CHAP, %s (0x%02x)",
tok2str(chapcode_values,"unknown",code),
code);
p++;
- ND_TCHECK_1(p);
ND_PRINT(", id %u", GET_U_1(p)); /* ID */
p++;
- ND_TCHECK_2(p);
len = GET_BE_U_2(p);
p += 2;
* don't know which flavor of CHAP (i.e. CHAP-MD5, MS-CHAPv1,
* MS-CHAPv2) is used at this point, we can't decode packet
* specifically to each algorithms. Instead, we simply decode
- * the GCD (Gratest Common Denominator) for all algorithms.
+ * the GCD (Greatest Common Denominator) for all algorithms.
*/
switch (code) {
case CHAP_CHAL:
case CHAP_RESP:
if (length - (p - p0) < 1)
return;
- ND_TCHECK_1(p);
val_size = GET_U_1(p); /* value size */
p++;
if (length - (p - p0) < val_size)
return;
ND_PRINT(", Value ");
for (i = 0; i < val_size; i++) {
- ND_TCHECK_1(p);
ND_PRINT("%02x", GET_U_1(p));
p++;
}
name_size = len - (u_int)(p - p0);
ND_PRINT(", Name ");
- for (i = 0; i < name_size; i++) {
- ND_TCHECK_1(p);
- fn_print_char(ndo, GET_U_1(p));
- p++;
- }
+ nd_printjn(ndo, p, name_size);
break;
case CHAP_SUCC:
case CHAP_FAIL:
msg_size = len - (u_int)(p - p0);
ND_PRINT(", Msg ");
- for (i = 0; i< msg_size; i++) {
- ND_TCHECK_1(p);
- fn_print_char(ndo, GET_U_1(p));
- p++;
- }
+ nd_printjn(ndo, p, msg_size);
break;
}
- return;
-
-trunc:
- ND_PRINT("[|chap]");
}
/* PAP (see RFC 1334) */
u_int code, len;
u_int peerid_len, passwd_len, msg_len;
const u_char *p0;
- u_int i;
p0 = p;
if (length < 1) {
ND_PRINT("[|pap]");
return;
} else if (length < 4) {
- ND_TCHECK_1(p);
ND_PRINT("[|pap 0x%02x]", GET_U_1(p));
return;
}
- ND_TCHECK_1(p);
code = GET_U_1(p);
ND_PRINT("PAP, %s (0x%02x)",
tok2str(papcode_values, "unknown", code),
code);
p++;
- ND_TCHECK_1(p);
ND_PRINT(", id %u", GET_U_1(p)); /* ID */
p++;
- ND_TCHECK_2(p);
len = GET_BE_U_2(p);
p += 2;
goto trunc;
if (length - (p - p0) < 1)
return;
- ND_TCHECK_1(p);
peerid_len = GET_U_1(p); /* Peer-ID Length */
p++;
if (length - (p - p0) < peerid_len)
return;
ND_PRINT(", Peer ");
- for (i = 0; i < peerid_len; i++) {
- ND_TCHECK_1(p);
- fn_print_char(ndo, GET_U_1(p));
- p++;
- }
+ nd_printjn(ndo, p, peerid_len);
+ p += peerid_len;
if (length - (p - p0) < 1)
return;
- ND_TCHECK_1(p);
passwd_len = GET_U_1(p); /* Password Length */
p++;
if (length - (p - p0) < passwd_len)
return;
ND_PRINT(", Name ");
- for (i = 0; i < passwd_len; i++) {
- ND_TCHECK_1(p);
- fn_print_char(ndo, GET_U_1(p));
- p++;
- }
+ nd_printjn(ndo, p, passwd_len);
break;
case PAP_AACK:
case PAP_ANAK:
goto trunc;
if (length - (p - p0) < 1)
return;
- ND_TCHECK_1(p);
msg_len = GET_U_1(p); /* Msg-Length */
p++;
if (length - (p - p0) < msg_len)
return;
ND_PRINT(", Msg ");
- for (i = 0; i< msg_len; i++) {
- ND_TCHECK_1(p);
- fn_print_char(ndo, GET_U_1(p));
- p++;
- }
+ nd_printjn(ndo, p, msg_len);
break;
}
return;
ND_PRINT(" (length bogus, should be = 10)");
return len;
}
- ND_TCHECK_4(p + 6);
ND_PRINT(": src %s, dst %s",
GET_IPADDR_STRING(p + 2),
GET_IPADDR_STRING(p + 6));
ND_PRINT(" (length bogus, should be >= 4)");
return 0;
}
- ND_TCHECK_2(p + 2);
compproto = GET_BE_U_2(p + 2);
ND_PRINT(": %s (0x%02x):",
ND_PRINT(" (length bogus, should be = 6)");
return 0;
}
- ND_TCHECK_4(p + 2);
ND_PRINT(": %s", GET_IPADDR_STRING(p + 2));
break;
default:
print_unknown_data(ndo, p + 2, "\n\t ", len - 2);
break;
}
- if (ndo->ndo_vflag > 1)
+ if (ndo->ndo_vflag > 1 && ND_TTEST_LEN(p + 2, len - 2))
print_unknown_data(ndo, p + 2, "\n\t ", len - 2); /* exclude TLV header */
return len;
ND_PRINT(" (length bogus, should be >= 3)");
return len;
}
- ND_TCHECK_1(p + 2);
ND_PRINT(": Version: %u, Dictionary Bits: %u",
GET_U_1(p + 2) >> 5,
GET_U_1(p + 2) & 0x1f);
ND_PRINT(" (length bogus, should be >= 4)");
return len;
}
- ND_TCHECK_1(p + 3);
ND_PRINT(": Features: %u, PxP: %s, History: %u, #CTX-ID: %u",
(GET_U_1(p + 2) & 0xc0) >> 6,
(GET_U_1(p + 2) & 0x20) ? "Enabled" : "Disabled",
ND_PRINT(" (length bogus, should be >= 4)");
return len;
}
- ND_TCHECK_1(p + 3);
ND_PRINT(": Window: %uK, Method: %s (0x%x), MBZ: %u, CHK: %u",
(GET_U_1(p + 2) & 0xf0) >> 4,
((GET_U_1(p + 2) & 0x0f) == 8) ? "zlib" : "unknown",
ND_PRINT(" (length bogus, should be = 6)");
return len;
}
- ND_TCHECK_4(p + 2);
ND_PRINT(": Magic-Num 0x%08x", GET_BE_U_4(p + 2));
break;
default:
ppp_hdlc(netdissect_options *ndo,
const u_char *p, u_int length)
{
- u_int caplen = ndo->ndo_snapend - p;
+ u_int caplen = ND_BYTES_AVAILABLE_AFTER(p);
u_char *b, *t, c;
const u_char *s;
u_int i, proto;
- const void *se;
if (caplen == 0)
return;
if (length == 0)
return;
- b = (u_char *)nd_malloc(ndo, caplen);
- if (b == NULL)
- return;
+ b = (u_char *)malloc(caplen);
+ if (b == NULL) {
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
+ "%s: malloc", __func__);
+ }
/*
* Unescape all the data into a temporary, private, buffer.
- * Do this so that we dont overwrite the original packet
+ * Do this so that we don't overwrite the original packet
* contents.
*/
for (s = p, t = b, i = caplen; i != 0; i--) {
}
/*
- * Change the end pointer, so bounds checks work.
+ * Switch to the output buffer for dissection, and save it
+ * on the buffer stack so it can be freed; our caller must
+ * pop it when done.
*/
- se = ndo->ndo_snapend;
- ndo->ndo_snapend = t;
+ if (!nd_push_buffer(ndo, b, b, (u_int)(t - b))) {
+ free(b);
+ (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
+ "%s: can't push buffer on buffer stack", __func__);
+ }
length = ND_BYTES_AVAILABLE_AFTER(b);
/* now lets guess about the payload codepoint format */
if (length < 4)
goto trunc;
proto = GET_BE_U_2(b + 2); /* load the PPP proto-id */
- handle_ppp(ndo, proto, b + 4, length - 4);
+ if ((proto & 0xff00) == 0x7e00)
+ ND_PRINT("(protocol 0x%04x invalid)", proto);
+ else
+ handle_ppp(ndo, proto, b + 4, length - 4);
break;
default: /* last guess - proto must be a PPP proto-id */
- handle_ppp(ndo, proto, b + 2, length - 2);
+ if ((proto & 0xff00) == 0x7e00)
+ ND_PRINT("(protocol 0x%04x invalid)", proto);
+ else
+ handle_ppp(ndo, proto, b + 2, length - 2);
break;
}
cleanup:
- ndo->ndo_snapend = se;
+ nd_pop_packet_info(ndo);
return;
trunc:
- ndo->ndo_snapend = se;
+ nd_pop_packet_info(ndo);
nd_print_trunc(ndo);
}
*/
if (length < 2)
goto trunc;
- ND_TCHECK_2(p);
ppp_header = GET_BE_U_2(p);
switch(ppp_header) {
- case (PPP_WITHDIRECTION_IN << 8 | PPP_CONTROL):
+ case (PPP_PPPD_IN << 8 | PPP_CONTROL):
if (ndo->ndo_eflag) ND_PRINT("In ");
p += 2;
length -= 2;
hdr_len += 2;
break;
- case (PPP_WITHDIRECTION_OUT << 8 | PPP_CONTROL):
+ case (PPP_PPPD_OUT << 8 | PPP_CONTROL):
if (ndo->ndo_eflag) ND_PRINT("Out ");
p += 2;
length -= 2;
if (length < 2)
goto trunc;
- ND_TCHECK_1(p);
if (GET_U_1(p) % 2) {
proto = GET_U_1(p); /* PFC is used */
p++;
length--;
hdr_len++;
} else {
- ND_TCHECK_2(p);
proto = GET_BE_U_2(p);
p += 2;
length -= 2;
hdr_len += 2;
}
- if (ndo->ndo_eflag)
- ND_PRINT("%s (0x%04x), length %u: ",
- tok2str(ppptype2str, "unknown", proto),
+ if (ndo->ndo_eflag) {
+ const char *typestr;
+ typestr = tok2str(ppptype2str, "unknown", proto);
+ ND_PRINT("%s (0x%04x), length %u",
+ typestr,
proto,
olen);
+ if (*typestr == 'u') /* "unknown" */
+ return hdr_len;
+
+ ND_PRINT(": ");
+ }
handle_ppp(ndo, proto, p, length);
return (hdr_len);
/* PPP I/F printer */
-u_int
+void
ppp_if_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
u_int length = h->len;
u_int caplen = h->caplen;
- ndo->ndo_protocol = "ppp_if";
+ ndo->ndo_protocol = "ppp";
if (caplen < PPP_HDRLEN) {
nd_print_trunc(ndo);
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ return;
}
+ ndo->ndo_ll_hdr_len += PPP_HDRLEN;
#if 0
/*
#endif
ppp_print(ndo, p, length);
-
- return (0);
}
/*
*
* This handles, for example, DLT_PPP_SERIAL in NetBSD.
*/
-u_int
+void
ppp_hdlc_if_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
u_int proto;
u_int hdrlen = 0;
- ndo->ndo_protocol = "ppp_hdlc_if";
+ ndo->ndo_protocol = "ppp_hdlc";
if (caplen < 2) {
nd_print_trunc(ndo);
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ return;
}
switch (GET_U_1(p)) {
case PPP_ADDRESS:
if (caplen < 4) {
nd_print_trunc(ndo);
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ return;
}
if (ndo->ndo_eflag)
case CHDLC_UNICAST:
case CHDLC_BCAST:
- return (chdlc_if_print(ndo, h, p));
+ chdlc_if_print(ndo, h, p);
+ return;
default:
if (caplen < 4) {
nd_print_trunc(ndo);
- return (caplen);
+ ndo->ndo_ll_hdr_len += caplen;
+ return;
}
if (ndo->ndo_eflag)
break;
}
- return (hdrlen);
-}
-
-#define PPP_BSDI_HDRLEN 24
-
-/* BSD/OS specific PPP printer */
-u_int
-ppp_bsdos_if_print(netdissect_options *ndo _U_,
- const struct pcap_pkthdr *h _U_, const u_char *p _U_)
-{
- u_int hdrlength;
-#ifdef __bsdi__
- u_int length = h->len;
- u_int caplen = h->caplen;
- uint16_t ptype;
- uint8_t llhl;
- const u_char *q;
- u_int i;
-
- ndo->ndo_protocol = "ppp_bsdos_if";
- if (caplen < PPP_BSDI_HDRLEN) {
- nd_print_trunc(ndo);
- return (caplen);
- }
-
- hdrlength = 0;
-
-#if 0
- if (GET_U_1(p) == PPP_ADDRESS &&
- GET_U_1(p + 1) == PPP_CONTROL) {
- if (ndo->ndo_eflag)
- ND_PRINT("%02x %02x ", GET_U_1(p),
- GET_U_1(p + 1));
- p += 2;
- hdrlength = 2;
- }
-
- if (ndo->ndo_eflag)
- ND_PRINT("%u ", length);
- /* Retrieve the protocol type */
- if (GET_U_1(p) & 01) {
- /* Compressed protocol field */
- ptype = GET_U_1(p);
- if (ndo->ndo_eflag)
- ND_PRINT("%02x ", ptype);
- p++;
- hdrlength += 1;
- } else {
- /* Un-compressed protocol field */
- ptype = GET_BE_U_2(p);
- if (ndo->ndo_eflag)
- ND_PRINT("%04x ", ptype);
- p += 2;
- hdrlength += 2;
- }
-#else
- ptype = 0; /*XXX*/
- if (ndo->ndo_eflag)
- ND_PRINT("%c ", GET_U_1(p + SLC_DIR) ? 'O' : 'I');
- llhl = GET_U_1(p + SLC_LLHL);
- if (llhl) {
- /* link level header */
- struct ppp_header *ph;
-
- q = p + SLC_BPFHDRLEN;
- ph = (struct ppp_header *)q;
- if (ph->phdr_addr == PPP_ADDRESS
- && ph->phdr_ctl == PPP_CONTROL) {
- if (ndo->ndo_eflag)
- ND_PRINT("%02x %02x ", GET_U_1(q),
- GET_U_1(q + 1));
- ptype = GET_BE_U_2(&ph->phdr_type);
- if (ndo->ndo_eflag && (ptype == PPP_VJC || ptype == PPP_VJNC)) {
- ND_PRINT("%s ", tok2str(ppptype2str,
- "proto-#%u", ptype));
- }
- } else {
- if (ndo->ndo_eflag) {
- ND_PRINT("LLH=[");
- for (i = 0; i < llhl; i++)
- ND_PRINT("%02x", GET_U_1(q + i));
- ND_PRINT("] ");
- }
- }
- }
- if (ndo->ndo_eflag)
- ND_PRINT("%u ", length);
- if (GET_U_1(p + SLC_CHL)) {
- q = p + SLC_BPFHDRLEN + llhl;
-
- switch (ptype) {
- case PPP_VJC:
- ptype = vjc_print(ndo, q, ptype);
- hdrlength = PPP_BSDI_HDRLEN;
- p += hdrlength;
- switch (ptype) {
- case PPP_IP:
- ip_print(ndo, p, length);
- break;
- case PPP_IPV6:
- ip6_print(ndo, p, length);
- break;
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(ndo, p, length);
- break;
- }
- goto printx;
- case PPP_VJNC:
- ptype = vjc_print(ndo, q, ptype);
- hdrlength = PPP_BSDI_HDRLEN;
- p += hdrlength;
- switch (ptype) {
- case PPP_IP:
- ip_print(ndo, p, length);
- break;
- case PPP_IPV6:
- ip6_print(ndo, p, length);
- break;
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(ndo, p, length);
- break;
- }
- goto printx;
- default:
- if (ndo->ndo_eflag) {
- ND_PRINT("CH=[");
- for (i = 0; i < llhl; i++)
- ND_PRINT("%02x",
- GET_U_1(q + i));
- ND_PRINT("] ");
- }
- break;
- }
- }
-
- hdrlength = PPP_BSDI_HDRLEN;
-#endif
-
- length -= hdrlength;
- p += hdrlength;
-
- switch (ptype) {
- case PPP_IP:
- ip_print(p, length);
- break;
- case PPP_IPV6:
- ip6_print(ndo, p, length);
- break;
- case PPP_MPLS_UCAST:
- case PPP_MPLS_MCAST:
- mpls_print(ndo, p, length);
- break;
- default:
- ND_PRINT("%s ", tok2str(ppptype2str, "unknown PPP protocol (0x%04x)", ptype));
- }
-
-printx:
-#else /* __bsdi */
- hdrlength = 0;
-#endif /* __bsdi__ */
- return (hdrlength);
+ ndo->ndo_ll_hdr_len += hdrlen;
}
projects / tcpdump / blobdiff