* 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.
- *
- * Format and print bootp packets.
*/
-#define NETDISSECT_REWORKED
+/* \summary: BOOTP and IPv4 DHCP printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
#define TAG_CLIENT_GUID ((uint8_t) 97)
#define TAG_LDAP_URL ((uint8_t) 95)
#define TAG_6OVER4 ((uint8_t) 96)
-#define TAG_PRINTER_NAME ((uint8_t) 100)
-#define TAG_MDHCP_SERVER ((uint8_t) 101)
+/* RFC 4833, TZ codes */
+#define TAG_TZ_PCODE ((uint8_t) 100)
+#define TAG_TZ_TCODE ((uint8_t) 101)
#define TAG_IPX_COMPAT ((uint8_t) 110)
#define TAG_NETINFO_PARENT ((uint8_t) 112)
#define TAG_NETINFO_PARENT_TAG ((uint8_t) 113)
#define TAG_FAILOVER ((uint8_t) 115)
#define TAG_EXTENDED_REQUEST ((uint8_t) 126)
#define TAG_EXTENDED_OPTION ((uint8_t) 127)
+#define TAG_MUDURL ((uint8_t) 161)
/* DHCP Message types (values for TAG_DHCP_MESSAGE option) */
#define DHCPDISCOVER 1
ND_PRINT((ndo, "BOOTP/DHCP, %s",
tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op)));
+ ND_TCHECK(bp->bp_hlen);
if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
ND_TCHECK2(bp->bp_chaddr[0], 6);
ND_PRINT((ndo, " from %s", etheraddr_string(ndo, bp->bp_chaddr)));
/* Only print interesting fields */
if (bp->bp_hops)
ND_PRINT((ndo, ", hops %d", bp->bp_hops));
- if (EXTRACT_32BITS(&bp->bp_xid))
- ND_PRINT((ndo, ", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid)));
- if (EXTRACT_16BITS(&bp->bp_secs))
- ND_PRINT((ndo, ", secs %d", EXTRACT_16BITS(&bp->bp_secs)));
+ if (EXTRACT_BE_32BITS(&bp->bp_xid))
+ ND_PRINT((ndo, ", xid 0x%x", EXTRACT_BE_32BITS(&bp->bp_xid)));
+ if (EXTRACT_BE_16BITS(&bp->bp_secs))
+ ND_PRINT((ndo, ", secs %d", EXTRACT_BE_16BITS(&bp->bp_secs)));
+ ND_TCHECK(bp->bp_flags);
ND_PRINT((ndo, ", Flags [%s]",
- bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags))));
+ bittok2str(bootp_flag_values, "none", EXTRACT_BE_16BITS(&bp->bp_flags))));
if (ndo->ndo_vflag > 1)
- ND_PRINT((ndo, " (0x%04x)", EXTRACT_16BITS(&bp->bp_flags)));
+ ND_PRINT((ndo, " (0x%04x)", EXTRACT_BE_16BITS(&bp->bp_flags)));
/* Client's ip address */
ND_TCHECK(bp->bp_ciaddr);
- if (EXTRACT_32BITS(&bp->bp_ciaddr.s_addr))
+ if (EXTRACT_BE_32BITS(&bp->bp_ciaddr.s_addr))
ND_PRINT((ndo, "\n\t Client-IP %s", ipaddr_string(ndo, &bp->bp_ciaddr)));
/* 'your' ip address (bootp client) */
ND_TCHECK(bp->bp_yiaddr);
- if (EXTRACT_32BITS(&bp->bp_yiaddr.s_addr))
+ if (EXTRACT_BE_32BITS(&bp->bp_yiaddr.s_addr))
ND_PRINT((ndo, "\n\t Your-IP %s", ipaddr_string(ndo, &bp->bp_yiaddr)));
/* Server's ip address */
ND_TCHECK(bp->bp_siaddr);
- if (EXTRACT_32BITS(&bp->bp_siaddr.s_addr))
+ if (EXTRACT_BE_32BITS(&bp->bp_siaddr.s_addr))
ND_PRINT((ndo, "\n\t Server-IP %s", ipaddr_string(ndo, &bp->bp_siaddr)));
/* Gateway's ip address */
ND_TCHECK(bp->bp_giaddr);
- if (EXTRACT_32BITS(&bp->bp_giaddr.s_addr))
+ if (EXTRACT_BE_32BITS(&bp->bp_giaddr.s_addr))
ND_PRINT((ndo, "\n\t Gateway-IP %s", ipaddr_string(ndo, &bp->bp_giaddr)));
/* Client's Ethernet address */
ND_TCHECK2(bp->bp_sname[0], 1); /* check first char only */
if (*bp->bp_sname) {
ND_PRINT((ndo, "\n\t sname \""));
- if (fn_print(ndo, bp->bp_sname, ndo->ndo_snapend)) {
+ if (fn_printztn(ndo, bp->bp_sname, (u_int)sizeof bp->bp_sname,
+ ndo->ndo_snapend)) {
ND_PRINT((ndo, "\""));
ND_PRINT((ndo, "%s", tstr + 1));
return;
ND_TCHECK2(bp->bp_file[0], 1); /* check first char only */
if (*bp->bp_file) {
ND_PRINT((ndo, "\n\t file \""));
- if (fn_print(ndo, bp->bp_file, ndo->ndo_snapend)) {
+ if (fn_printztn(ndo, bp->bp_file, (u_int)sizeof bp->bp_file,
+ ndo->ndo_snapend)) {
ND_PRINT((ndo, "\""));
ND_PRINT((ndo, "%s", tstr + 1));
return;
else {
uint32_t ul;
- ul = EXTRACT_32BITS(&bp->bp_vend);
+ ul = EXTRACT_BE_32BITS(&bp->bp_vend);
if (ul != 0)
ND_PRINT((ndo, "\n\t Vendor-#0x%x", ul));
}
* s - short (16 bits)
* b - period-seperated decimal bytes (variable length)
* x - colon-seperated hex bytes (variable length)
- * a - ascii string (variable length)
+ * a - ASCII string (variable length)
* B - on/off (8 bits)
* $ - special (explicit code to handle)
*/
{ TAG_LPR_SERVER, "iLPR-Server" }, /* lpr server (RFC1179) */
{ TAG_IMPRESS_SERVER, "iIM" }, /* impress servers (Imagen) */
{ TAG_RLP_SERVER, "iRL" }, /* resource location (RFC887) */
- { TAG_HOSTNAME, "aHostname" }, /* ascii hostname */
+ { TAG_HOSTNAME, "aHostname" }, /* ASCII hostname */
{ TAG_BOOTSIZE, "sBS" }, /* 512 byte blocks */
{ TAG_END, " END" },
/* RFC1497 tags */
{ TAG_CLIENT_GUID, "bGUID" }, /* XXX 'b' */
{ TAG_LDAP_URL, "aLDAP" },
{ TAG_6OVER4, "i6o4" },
- { TAG_PRINTER_NAME, "aPRTR" },
- { TAG_MDHCP_SERVER, "bMDHCP" }, /* XXX 'b' */
+ { TAG_TZ_PCODE, "aPOSIX-TZ" },
+ { TAG_TZ_TCODE, "aTZ-Name" },
{ TAG_IPX_COMPAT, "bIPX" }, /* XXX 'b' */
{ TAG_NETINFO_PARENT, "iNI" },
{ TAG_NETINFO_PARENT_TAG, "aNITAG" },
{ TAG_URL, "aURL" },
{ TAG_FAILOVER, "bFAIL" }, /* XXX 'b' */
+ { TAG_MUDURL, "aMUD-URL" },
{ 0, NULL }
};
/* 2-byte extended tags */
ND_PRINT((ndo, "\n\t Vendor-rfc1048 Extensions"));
/* Step over magic cookie */
- ND_PRINT((ndo, "\n\t Magic Cookie 0x%08x", EXTRACT_32BITS(bp)));
+ ND_PRINT((ndo, "\n\t Magic Cookie 0x%08x", EXTRACT_BE_32BITS(bp)));
bp += sizeof(int32_t);
/* Loop while we there is a tag left in the buffer */
return;
if (tag == TAG_EXTENDED_OPTION) {
ND_TCHECK2(*(bp + 1), 2);
- tag = EXTRACT_16BITS(bp + 1);
+ tag = EXTRACT_BE_16BITS(bp + 1);
/* XXX we don't know yet if the IANA will
* preclude overlap of 1-byte and 2-byte spaces.
* If not, we need to offset tag after this step.
first = 1;
while (len > 1) {
len -= 2;
- us = EXTRACT_16BITS(bp);
+ us = EXTRACT_BE_16BITS(bp);
bp += 2;
cp = tok2str(xtag2str, "?xT%u", us);
if (!first)
switch (c) {
case 'a':
- /* ascii strings */
+ /* ASCII strings */
ND_PRINT((ndo, "\""));
if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) {
ND_PRINT((ndo, "\""));
while (len >= sizeof(ul)) {
if (!first)
ND_PRINT((ndo, ","));
- ul = EXTRACT_32BITS(bp);
+ ul = EXTRACT_BE_32BITS(bp);
if (c == 'i') {
ul = htonl(ul);
ND_PRINT((ndo, "%s", ipaddr_string(ndo, &ul)));
while (len >= sizeof(us)) {
if (!first)
ND_PRINT((ndo, ","));
- us = EXTRACT_16BITS(bp);
+ us = EXTRACT_BE_16BITS(bp);
ND_PRINT((ndo, "%u", us));
bp += sizeof(us);
len -= sizeof(us);
break;
}
if (*bp)
- ND_PRINT((ndo, "[%s] ", client_fqdn_flags(*bp)));
+ ND_PRINT((ndo, "[%s] ", client_fqdn_flags(EXTRACT_8BITS(bp))));
bp++;
if (*bp || *(bp+1))
ND_PRINT((ndo, "%u/%u ", *bp, *(bp+1)));
break;
}
if (len < suboptlen) {
- ND_PRINT((ndo, "ERROR: malformed option"));
+ ND_PRINT((ndo, "ERROR: invalid option"));
bp += len;
len = 0;
break;
projects / tcpdump / blobdiff