The Tcpdump Group git mirrors - tcpdump/blobdiff

index 4edb90eed410b4fe5965d868308710568d331cb3..71a04cd92d1140890e293bc611dc19b072ef0a88 100644 (file)

--- a/print-rsvp.c

+++ b/print-rsvp.c

@@ -15,14 +15,13 @@

* Original code by Hannes Gredler ([email protected])

-#define NETDISSECT_REWORKED

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

-#include <tcpdump-stdinc.h>

+#include <netdissect-stdinc.h>

-#include "interface.h"

+#include "netdissect.h"

#include "extract.h"

#include "addrtoname.h"

#include "ethertype.h"

@@ -30,6 +29,9 @@

#include "af.h"

#include "signature.h"

+static const char tstr[] = " [|rsvp]";

+static const char istr[] = " (invalid)";

* RFC 2205 common header

@@ -43,12 +45,12 @@

struct rsvp_common_header {

- u_int8_t version_flags;

- u_int8_t msg_type;

- u_int8_t checksum[2];

- u_int8_t ttl;

- u_int8_t reserved;

- u_int8_t length[2];

+ uint8_t version_flags;

+ uint8_t msg_type;

+ uint8_t checksum[2];

+ uint8_t ttl;

+ uint8_t reserved;

+ uint8_t length[2];

};

@@ -66,9 +68,9 @@ struct rsvp_common_header {

struct rsvp_object_header {

- u_int8_t length[2];

- u_int8_t class_num;

- u_int8_t ctype;

+ uint8_t length[2];

+ uint8_t class_num;

+ uint8_t ctype;

};

#define RSVP_VERSION 1

@@ -292,11 +294,11 @@ static const struct tok rsvp_ctype_values[] = {

};

struct rsvp_obj_integrity_t {

- u_int8_t flags;

- u_int8_t res;

- u_int8_t key_id[6];

- u_int8_t sequence[8];

- u_int8_t digest[16];

+ uint8_t flags;

+ uint8_t res;

+ uint8_t key_id[6];

+ uint8_t sequence[8];

+ uint8_t digest[16];

};

static const struct tok rsvp_obj_integrity_flag_values[] = {

@@ -305,14 +307,14 @@ static const struct tok rsvp_obj_integrity_flag_values[] = {

};

struct rsvp_obj_frr_t {

- u_int8_t setup_prio;

- u_int8_t hold_prio;

- u_int8_t hop_limit;

- u_int8_t flags;

- u_int8_t bandwidth[4];

- u_int8_t include_any[4];

- u_int8_t exclude_any[4];

- u_int8_t include_all[4];

+ uint8_t setup_prio;

+ uint8_t hold_prio;

+ uint8_t hop_limit;

+ uint8_t flags;

+ uint8_t bandwidth[4];

+ uint8_t include_any[4];

+ uint8_t exclude_any[4];

+ uint8_t include_all[4];

};

@@ -486,17 +488,18 @@ static const struct tok rsvp_obj_generalized_uni_values[] = {

static int

rsvp_intserv_print(netdissect_options *ndo,

- const u_char *tptr, u_short obj_tlen) {

+ const u_char *tptr, u_short obj_tlen)

int parameter_id,parameter_length;

union {

float f;

- u_int32_t i;

+ uint32_t i;

} bw;

if (obj_tlen < 4)

return 0;

parameter_id = *(tptr);

+ ND_TCHECK2(*(tptr + 2), 2);

parameter_length = EXTRACT_16BITS(tptr+2)<<2; /* convert wordcount to bytecount */

ND_PRINT((ndo, "\n\t Parameter ID: %s (%u), length: %u, Flags: [0x%02x]",

@@ -518,6 +521,7 @@ rsvp_intserv_print(netdissect_options *ndo,

* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

if (parameter_length == 4)

+ ND_TCHECK2(*(tptr + 4), 4);

ND_PRINT((ndo, "\n\t\tIS hop count: %u", EXTRACT_32BITS(tptr + 4)));

break;

@@ -530,6 +534,7 @@ rsvp_intserv_print(netdissect_options *ndo,

* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

if (parameter_length == 4) {

+ ND_TCHECK2(*(tptr + 4), 4);

bw.i = EXTRACT_32BITS(tptr+4);

ND_PRINT((ndo, "\n\t\tPath b/w estimate: %.10g Mbps", bw.f / 125000));

}

@@ -544,6 +549,7 @@ rsvp_intserv_print(netdissect_options *ndo,

* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

if (parameter_length == 4) {

+ ND_TCHECK2(*(tptr + 4), 4);

ND_PRINT((ndo, "\n\t\tMinimum path latency: "));

if (EXTRACT_32BITS(tptr+4) == 0xffffffff)

ND_PRINT((ndo, "don't care"));

@@ -562,6 +568,7 @@ rsvp_intserv_print(netdissect_options *ndo,

* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

if (parameter_length == 4)

+ ND_TCHECK2(*(tptr + 4), 4);

ND_PRINT((ndo, "\n\t\tComposed MTU: %u bytes", EXTRACT_32BITS(tptr + 4)));

break;

case 127:

@@ -582,6 +589,7 @@ rsvp_intserv_print(netdissect_options *ndo,

if (parameter_length == 20) {

+ ND_TCHECK2(*(tptr + 4), 20);

bw.i = EXTRACT_32BITS(tptr+4);

ND_PRINT((ndo, "\n\t\tToken Bucket Rate: %.10g Mbps", bw.f / 125000));

bw.i = EXTRACT_32BITS(tptr+8);

@@ -605,6 +613,7 @@ rsvp_intserv_print(netdissect_options *ndo,

if (parameter_length == 8) {

+ ND_TCHECK2(*(tptr + 4), 8);

bw.i = EXTRACT_32BITS(tptr+4);

ND_PRINT((ndo, "\n\t\tRate: %.10g Mbps", bw.f / 125000));

ND_PRINT((ndo, "\n\t\tSlack Term: %u", EXTRACT_32BITS(tptr + 8)));

@@ -616,6 +625,7 @@ rsvp_intserv_print(netdissect_options *ndo,

case 135:

case 136:

if (parameter_length == 4)

+ ND_TCHECK2(*(tptr + 4), 4);

ND_PRINT((ndo, "\n\t\tValue: %u", EXTRACT_32BITS(tptr + 4)));

break;

@@ -624,11 +634,15 @@ rsvp_intserv_print(netdissect_options *ndo,

print_unknown_data(ndo, tptr + 4, "\n\t\t", parameter_length);

}

return (parameter_length+4); /* header length 4 bytes */

+trunc:

+ ND_PRINT((ndo, "%s", tstr));

+ return 0;

}

static int

rsvp_obj_print(netdissect_options *ndo,

- const u_char *pptr

+ const u_char *pptr

#ifndef HAVE_LIBCRYPTO

_U_

#endif

@@ -637,8 +651,8 @@ _U_

_U_

#endif

, const u_char *tptr,

- const char *ident, u_int tlen) {

+ const char *ident, u_int tlen)

const struct rsvp_object_header *rsvp_obj_header;

const u_char *obj_tptr;

union {

@@ -650,16 +664,15 @@ _U_

int hexdump,processed,padbytes,error_code,error_value,i,sigcheck;

union {

float f;

- u_int32_t i;

+ uint32_t i;

} bw;

- u_int8_t namelen;

+ uint8_t namelen;

u_int action, subchannel;

while(tlen>=sizeof(struct rsvp_object_header)) {

/* did we capture enough for fully decoding the object header ? */

- if (!ND_TTEST2(*tptr, sizeof(struct rsvp_object_header)))

- goto trunc;

+ ND_TCHECK2(*tptr, sizeof(struct rsvp_object_header));

rsvp_obj_header = (const struct rsvp_object_header *)tptr;

rsvp_obj_len=EXTRACT_16BITS(rsvp_obj_header->length);

@@ -724,7 +737,6 @@ _U_

obj_tlen-=8;

obj_tptr+=8;

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < 20)

return -1;

@@ -763,7 +775,6 @@ _U_

obj_tlen-=26;

obj_tptr+=26;

break;

-#endif

case RSVP_CTYPE_13: /* IPv4 p2mp LSP Tunnel */

if (obj_tlen < 12)

return -1;

@@ -803,7 +814,6 @@ _U_

obj_tlen-=sizeof(struct in_addr);

obj_tptr+=sizeof(struct in_addr);

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < sizeof(struct in6_addr))

return -1;

@@ -813,7 +823,6 @@ _U_

obj_tlen-=sizeof(struct in6_addr);

obj_tptr+=sizeof(struct in6_addr);

break;

-#endif

default:

hexdump=TRUE;

}

@@ -830,7 +839,6 @@ _U_

obj_tlen-=sizeof(struct in_addr);

obj_tptr+=sizeof(struct in_addr);

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < sizeof(struct in6_addr))

return-1;

@@ -840,7 +848,6 @@ _U_

obj_tlen-=sizeof(struct in6_addr);

obj_tptr+=sizeof(struct in6_addr);

break;

-#endif

default:

hexdump=TRUE;

}

@@ -915,7 +922,6 @@ _U_

obj_tlen-=8;

obj_tptr+=8;

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < 20)

return-1;

@@ -940,7 +946,6 @@ _U_

obj_tlen-=40;

obj_tptr+=40;

break;

-#endif

case RSVP_CTYPE_TUNNEL_IPV4:

if (obj_tlen < 8)

return-1;

@@ -1180,6 +1185,9 @@ _U_

tok2str(af_values, "Unknown", af), af,

subobj_len));

+ if(subobj_len == 0)

+ goto invalid;

switch(subobj_type) {

case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS:

case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS:

@@ -1191,14 +1199,12 @@ _U_

ND_PRINT((ndo, "%s UNI IPv4 TNA address: %s",

ident, ipaddr_string(ndo, obj_tptr + 4)));

break;

-#ifdef INET6

case AFNUM_INET6:

if (subobj_len < 20)

return -1;

ND_PRINT((ndo, "%s UNI IPv6 TNA address: %s",

ident, ip6addr_string(ndo, obj_tptr + 4)));

break;

-#endif

case AFNUM_NSAP:

if (subobj_len) {

/* unless we have a TLV parser lets just hexdump */

@@ -1272,7 +1278,6 @@ _U_

if (obj_tlen)

hexdump=TRUE; /* unless we have a TLV parser lets just hexdump */

break;

-#ifdef INET6

case RSVP_CTYPE_4: /* fall through - FIXME add TLV parser */

case RSVP_CTYPE_IPV6:

if (obj_tlen < 20)

@@ -1285,7 +1290,6 @@ _U_

obj_tptr+=20;

hexdump=TRUE; /* unless we have a TLV parser lets just hexdump */

break;

-#endif

default:

hexdump=TRUE;

}

@@ -1361,7 +1365,6 @@ _U_

obj_tlen-=8;

obj_tptr+=8;

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < 20)

return-1;

@@ -1406,7 +1409,6 @@ _U_

obj_tlen-=40;

obj_tptr+=40;

break;

-#endif

case RSVP_CTYPE_TUNNEL_IPV4:

if (obj_tlen < 8)

return-1;

@@ -1548,7 +1550,6 @@ _U_

obj_tlen-=8;

obj_tptr+=8;

break;

-#ifdef INET6

case RSVP_CTYPE_4: /* fall through - FIXME add TLV parser */

case RSVP_CTYPE_IPV6:

if (obj_tlen < 20)

@@ -1575,7 +1576,6 @@ _U_

obj_tlen-=20;

obj_tptr+=20;

break;

-#endif

default:

hexdump=TRUE;

}

@@ -1751,7 +1751,6 @@ _U_

obj_tlen-=4;

obj_tptr+=4;

break;

-#ifdef INET6

case RSVP_CTYPE_IPV6:

if (obj_tlen < 16)

return-1;

@@ -1761,7 +1760,6 @@ _U_

obj_tlen-=16;

obj_tptr+=16;

break;

-#endif

default:

hexdump=TRUE;

}

@@ -1789,15 +1787,19 @@ _U_

tlen-=rsvp_obj_len;

}

return 0;

+invalid:

+ ND_PRINT((ndo, "%s", istr));

+ return -1;

trunc:

- ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));

+ ND_PRINT((ndo, "\n\t\t"));

+ ND_PRINT((ndo, "%s", tstr));

return -1;

}

void

rsvp_print(netdissect_options *ndo,

- register const u_char *pptr, register u_int len) {

+ register const u_char *pptr, register u_int len)

struct rsvp_common_header *rsvp_com_header;

const u_char *tptr,*subtptr;

u_short plen, tlen, subtlen;

@@ -1932,5 +1934,6 @@ rsvp_print(netdissect_options *ndo,

return;

trunc:

- ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));

+ ND_PRINT((ndo, "\n\t\t"));

+ ND_PRINT((ndo, "%s", tstr));

}