* Format and print bootp packets.
*/
+#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
-#include <stdio.h>
#include <string.h>
#include "interface.h"
#include "addrtoname.h"
#include "extract.h"
-#include "ether.h"
#include "bootp.h"
static const char tstr[] = " [|bootp]";
-static void rfc1048_print(const u_char *);
-static void cmu_print(const u_char *);
+static void rfc1048_print(netdissect_options *, const u_char *);
+static void cmu_print(netdissect_options *, const u_char *);
static char *client_fqdn_flags(u_int flags);
static const struct tok bootp_flag_values[] = {
* Print bootp requests
*/
void
-bootp_print(register const u_char *cp, u_int length)
+bootp_print(netdissect_options *ndo,
+ register const u_char *cp, u_int length)
{
register const struct bootp *bp;
static const u_char vm_cmu[4] = VM_CMU;
static const u_char vm_rfc1048[4] = VM_RFC1048;
bp = (const struct bootp *)cp;
- TCHECK(bp->bp_op);
+ ND_TCHECK(bp->bp_op);
- printf("BOOTP/DHCP, %s",
- tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op));
+ ND_PRINT((ndo, "BOOTP/DHCP, %s",
+ tok2str(bootp_op_values, "unknown (0x%02x)", bp->bp_op)));
if (bp->bp_htype == 1 && bp->bp_hlen == 6 && bp->bp_op == BOOTPREQUEST) {
- TCHECK2(bp->bp_chaddr[0], 6);
- printf(" from %s", etheraddr_string(bp->bp_chaddr));
+ ND_TCHECK2(bp->bp_chaddr[0], 6);
+ ND_PRINT((ndo, " from %s", etheraddr_string(ndo, bp->bp_chaddr)));
}
- printf(", length %u", length);
+ ND_PRINT((ndo, ", length %u", length));
- if (!vflag)
- return;
+ if (!ndo->ndo_vflag)
+ return;
- TCHECK(bp->bp_secs);
+ ND_TCHECK(bp->bp_secs);
/* The usual hardware address type is 1 (10Mb Ethernet) */
if (bp->bp_htype != 1)
- printf(", htype %d", bp->bp_htype);
+ ND_PRINT((ndo, ", htype %d", bp->bp_htype));
/* The usual length for 10Mb Ethernet address is 6 bytes */
if (bp->bp_htype != 1 || bp->bp_hlen != 6)
- printf(", hlen %d", bp->bp_hlen);
+ ND_PRINT((ndo, ", hlen %d", bp->bp_hlen));
/* Only print interesting fields */
if (bp->bp_hops)
- printf(", hops %d", bp->bp_hops);
+ ND_PRINT((ndo, ", hops %d", bp->bp_hops));
if (EXTRACT_32BITS(&bp->bp_xid))
- printf(", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid));
+ ND_PRINT((ndo, ", xid 0x%x", EXTRACT_32BITS(&bp->bp_xid)));
if (EXTRACT_16BITS(&bp->bp_secs))
- printf(", secs %d", EXTRACT_16BITS(&bp->bp_secs));
+ ND_PRINT((ndo, ", secs %d", EXTRACT_16BITS(&bp->bp_secs)));
- printf(", Flags [%s]",
- bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags)));
- if (vflag > 1)
- printf(" (0x%04x)", EXTRACT_16BITS(&bp->bp_flags));
+ ND_PRINT((ndo, ", Flags [%s]",
+ bittok2str(bootp_flag_values, "none", EXTRACT_16BITS(&bp->bp_flags))));
+ if (ndo->ndo_vflag > 1)
+ ND_PRINT((ndo, " (0x%04x)", EXTRACT_16BITS(&bp->bp_flags)));
/* Client's ip address */
- TCHECK(bp->bp_ciaddr);
+ ND_TCHECK(bp->bp_ciaddr);
if (EXTRACT_32BITS(&bp->bp_ciaddr.s_addr))
- printf("\n\t Client-IP %s", ipaddr_string(&bp->bp_ciaddr));
+ ND_PRINT((ndo, "\n\t Client-IP %s", ipaddr_string(ndo, &bp->bp_ciaddr)));
/* 'your' ip address (bootp client) */
- TCHECK(bp->bp_yiaddr);
+ ND_TCHECK(bp->bp_yiaddr);
if (EXTRACT_32BITS(&bp->bp_yiaddr.s_addr))
- printf("\n\t Your-IP %s", ipaddr_string(&bp->bp_yiaddr));
+ ND_PRINT((ndo, "\n\t Your-IP %s", ipaddr_string(ndo, &bp->bp_yiaddr)));
/* Server's ip address */
- TCHECK(bp->bp_siaddr);
+ ND_TCHECK(bp->bp_siaddr);
if (EXTRACT_32BITS(&bp->bp_siaddr.s_addr))
- printf("\n\t Server-IP %s", ipaddr_string(&bp->bp_siaddr));
+ ND_PRINT((ndo, "\n\t Server-IP %s", ipaddr_string(ndo, &bp->bp_siaddr)));
/* Gateway's ip address */
- TCHECK(bp->bp_giaddr);
+ ND_TCHECK(bp->bp_giaddr);
if (EXTRACT_32BITS(&bp->bp_giaddr.s_addr))
- printf("\n\t Gateway-IP %s", ipaddr_string(&bp->bp_giaddr));
+ ND_PRINT((ndo, "\n\t Gateway-IP %s", ipaddr_string(ndo, &bp->bp_giaddr)));
/* Client's Ethernet address */
if (bp->bp_htype == 1 && bp->bp_hlen == 6) {
- TCHECK2(bp->bp_chaddr[0], 6);
- printf("\n\t Client-Ethernet-Address %s", etheraddr_string(bp->bp_chaddr));
+ ND_TCHECK2(bp->bp_chaddr[0], 6);
+ ND_PRINT((ndo, "\n\t Client-Ethernet-Address %s", etheraddr_string(ndo, bp->bp_chaddr)));
}
- TCHECK2(bp->bp_sname[0], 1); /* check first char only */
+ ND_TCHECK2(bp->bp_sname[0], 1); /* check first char only */
if (*bp->bp_sname) {
- printf("\n\t sname \"");
- if (fn_print(bp->bp_sname, snapend)) {
- putchar('"');
- fputs(tstr + 1, stdout);
+ ND_PRINT((ndo, "\n\t sname \""));
+ if (fn_print(ndo, bp->bp_sname, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
+ ND_PRINT((ndo, "%s", tstr + 1));
return;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
}
- TCHECK2(bp->bp_file[0], 1); /* check first char only */
+ ND_TCHECK2(bp->bp_file[0], 1); /* check first char only */
if (*bp->bp_file) {
- printf("\n\t file \"");
- if (fn_print(bp->bp_file, snapend)) {
- putchar('"');
- fputs(tstr + 1, stdout);
+ ND_PRINT((ndo, "\n\t file \""));
+ if (fn_print(ndo, bp->bp_file, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
+ ND_PRINT((ndo, "%s", tstr + 1));
return;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
}
/* Decode the vendor buffer */
- TCHECK(bp->bp_vend[0]);
+ ND_TCHECK(bp->bp_vend[0]);
if (memcmp((const char *)bp->bp_vend, vm_rfc1048,
- sizeof(u_int32_t)) == 0)
- rfc1048_print(bp->bp_vend);
+ sizeof(uint32_t)) == 0)
+ rfc1048_print(ndo, bp->bp_vend);
else if (memcmp((const char *)bp->bp_vend, vm_cmu,
- sizeof(u_int32_t)) == 0)
- cmu_print(bp->bp_vend);
+ sizeof(uint32_t)) == 0)
+ cmu_print(ndo, bp->bp_vend);
else {
- u_int32_t ul;
+ uint32_t ul;
ul = EXTRACT_32BITS(&bp->bp_vend);
if (ul != 0)
- printf("\n\t Vendor-#0x%x", ul);
+ ND_PRINT((ndo, "\n\t Vendor-#0x%x", ul));
}
return;
trunc:
- fputs(tstr, stdout);
+ ND_PRINT((ndo, "%s", tstr));
}
/*
static void
-rfc1048_print(register const u_char *bp)
+rfc1048_print(netdissect_options *ndo,
+ register const u_char *bp)
{
- register u_int16_t tag;
+ register uint16_t tag;
register u_int len;
register const char *cp;
register char c;
int first, idx;
- u_int32_t ul;
- u_int16_t us;
- u_int8_t uc, subopt, suboptlen;
+ uint32_t ul;
+ uint16_t us;
+ uint8_t uc, subopt, suboptlen;
- printf("\n\t Vendor-rfc1048 Extensions");
+ ND_PRINT((ndo, "\n\t Vendor-rfc1048 Extensions"));
/* Step over magic cookie */
- printf("\n\t Magic Cookie 0x%08x", EXTRACT_32BITS(bp));
+ ND_PRINT((ndo, "\n\t Magic Cookie 0x%08x", EXTRACT_32BITS(bp)));
bp += sizeof(int32_t);
/* Loop while we there is a tag left in the buffer */
- while (TTEST2(*bp, 1)) {
+ while (ND_TTEST2(*bp, 1)) {
tag = *bp++;
- if (tag == TAG_PAD && vflag < 3)
+ if (tag == TAG_PAD && ndo->ndo_vflag < 3)
continue;
- if (tag == TAG_END && vflag < 3)
+ if (tag == TAG_END && ndo->ndo_vflag < 3)
return;
if (tag == TAG_EXTENDED_OPTION) {
- TCHECK2(*(bp + 1), 2);
+ ND_TCHECK2(*(bp + 1), 2);
tag = EXTRACT_16BITS(bp + 1);
/* XXX we don't know yet if the IANA will
* preclude overlap of 1-byte and 2-byte spaces.
len = 0;
else {
/* Get the length; check for truncation */
- TCHECK2(*bp, 1);
+ ND_TCHECK2(*bp, 1);
len = *bp++;
}
- printf("\n\t %s Option %u, length %u%s", cp, tag, len,
- len > 0 ? ": " : "");
+ ND_PRINT((ndo, "\n\t %s Option %u, length %u%s", cp, tag, len,
+ len > 0 ? ": " : ""));
- if (tag == TAG_PAD && vflag > 2) {
+ if (tag == TAG_PAD && ndo->ndo_vflag > 2) {
u_int ntag = 1;
- while (TTEST2(*bp, 1) && *bp == TAG_PAD) {
+ while (ND_TTEST2(*bp, 1) && *bp == TAG_PAD) {
bp++;
ntag++;
}
if (ntag > 1)
- printf(", occurs %u", ntag);
+ ND_PRINT((ndo, ", occurs %u", ntag));
}
- if (!TTEST2(*bp, len)) {
- printf("[|rfc1048 %u]", len);
+ if (!ND_TTEST2(*bp, len)) {
+ ND_PRINT((ndo, "[|rfc1048 %u]", len));
return;
}
if (tag == TAG_DHCP_MESSAGE && len == 1) {
uc = *bp++;
- printf("%s", tok2str(dhcp_msg_values, "Unknown (%u)", uc));
- continue;
+ ND_PRINT((ndo, "%s", tok2str(dhcp_msg_values, "Unknown (%u)", uc)));
+ continue;
}
if (tag == TAG_PARM_REQUEST) {
uc = *bp++;
cp = tok2str(tag2str, "?Option %u", uc);
if (idx % 4 == 0)
- printf("\n\t ");
+ ND_PRINT((ndo, "\n\t "));
else
- printf(", ");
- printf("%s", cp + 1);
+ ND_PRINT((ndo, ", "));
+ ND_PRINT((ndo, "%s", cp + 1));
idx++;
}
continue;
bp += 2;
cp = tok2str(xtag2str, "?xT%u", us);
if (!first)
- putchar('+');
- printf("%s", cp + 1);
+ ND_PRINT((ndo, "+"));
+ ND_PRINT((ndo, "%s", cp + 1));
first = 0;
}
continue;
case 'a':
/* ascii strings */
- putchar('"');
- if (fn_printn(bp, len, snapend)) {
- putchar('"');
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len;
len = 0;
break;
/* ip addresses/32-bit words */
while (len >= sizeof(ul)) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
ul = EXTRACT_32BITS(bp);
if (c == 'i') {
ul = htonl(ul);
- printf("%s", ipaddr_string(&ul));
+ ND_PRINT((ndo, "%s", ipaddr_string(ndo, &ul)));
} else if (c == 'L')
- printf("%d", ul);
+ ND_PRINT((ndo, "%d", ul));
else
- printf("%u", ul);
+ ND_PRINT((ndo, "%u", ul));
bp += sizeof(ul);
len -= sizeof(ul);
first = 0;
/* IP address pairs */
while (len >= 2*sizeof(ul)) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf("(%s:", ipaddr_string(&ul));
+ ND_PRINT((ndo, "(%s:", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf("%s)", ipaddr_string(&ul));
+ ND_PRINT((ndo, "%s)", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
len -= 2*sizeof(ul);
first = 0;
/* shorts */
while (len >= sizeof(us)) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
us = EXTRACT_16BITS(bp);
- printf("%u", us);
+ ND_PRINT((ndo, "%u", us));
bp += sizeof(us);
len -= sizeof(us);
first = 0;
/* boolean */
while (len > 0) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
switch (*bp) {
case 0:
- putchar('N');
+ ND_PRINT((ndo, "N"));
break;
case 1:
- putchar('Y');
+ ND_PRINT((ndo, "Y"));
break;
default:
- printf("%u?", *bp);
+ ND_PRINT((ndo, "%u?", *bp));
break;
}
++bp;
/* Bytes */
while (len > 0) {
if (!first)
- putchar(c == 'x' ? ':' : '.');
+ ND_PRINT((ndo, c == 'x' ? ":" : "."));
if (c == 'x')
- printf("%02x", *bp);
+ ND_PRINT((ndo, "%02x", *bp));
else
- printf("%u", *bp);
+ ND_PRINT((ndo, "%u", *bp));
++bp;
--len;
first = 0;
case TAG_NETBIOS_NODE:
/* this option should be at least 1 byte long */
if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_NETBIOS_NODE, len);
+ ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes",
+ TAG_NETBIOS_NODE, len));
break;
}
tag = *bp++;
--len;
- fputs(tok2str(nbo2str, NULL, tag), stdout);
+ ND_PRINT((ndo, "%s", tok2str(nbo2str, NULL, tag)));
break;
case TAG_OPT_OVERLOAD:
/* this option should be at least 1 byte long */
if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_OPT_OVERLOAD, len);
+ ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes",
+ TAG_OPT_OVERLOAD, len));
break;
}
tag = *bp++;
--len;
- fputs(tok2str(oo2str, NULL, tag), stdout);
+ ND_PRINT((ndo, "%s", tok2str(oo2str, NULL, tag)));
break;
case TAG_CLIENT_FQDN:
/* this option should be at least 3 bytes long */
if (len < 3) {
- printf("ERROR: option %u len %u < 3 bytes",
- TAG_CLIENT_FQDN, len);
+ ND_PRINT((ndo, "ERROR: option %u len %u < 3 bytes",
+ TAG_CLIENT_FQDN, len));
bp += len;
len = 0;
break;
}
if (*bp)
- printf("[%s] ", client_fqdn_flags(*bp));
+ ND_PRINT((ndo, "[%s] ", client_fqdn_flags(*bp)));
bp++;
if (*bp || *(bp+1))
- printf("%u/%u ", *bp, *(bp+1));
+ ND_PRINT((ndo, "%u/%u ", *bp, *(bp+1)));
bp += 2;
- putchar('"');
- if (fn_printn(bp, len - 3, snapend)) {
- putchar('"');
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len - 3, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len - 3;
len = 0;
break;
/* this option should be at least 1 byte long */
if (len < 1) {
- printf("ERROR: option %u len %u < 1 bytes",
- TAG_CLIENT_ID, len);
+ ND_PRINT((ndo, "ERROR: option %u len %u < 1 bytes",
+ TAG_CLIENT_ID, len));
break;
}
type = *bp++;
len--;
if (type == 0) {
- putchar('"');
- if (fn_printn(bp, len, snapend)) {
- putchar('"');
+ ND_PRINT((ndo, "\""));
+ if (fn_printn(ndo, bp, len, ndo->ndo_snapend)) {
+ ND_PRINT((ndo, "\""));
goto trunc;
}
- putchar('"');
+ ND_PRINT((ndo, "\""));
bp += len;
len = 0;
break;
} else {
- printf("%s ", tok2str(arp2str, "hardware-type %u,", type));
+ ND_PRINT((ndo, "%s ", tok2str(arp2str, "hardware-type %u,", type)));
while (len > 0) {
if (!first)
- putchar(':');
- printf("%02x", *bp);
+ ND_PRINT((ndo, ":"));
+ ND_PRINT((ndo, "%02x", *bp));
++bp;
--len;
first = 0;
suboptlen = *bp++;
len -= 2;
if (suboptlen > len) {
- printf("\n\t %s SubOption %u, length %u: length goes past end of option",
+ ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: length goes past end of option",
tok2str(agent_suboption_values, "Unknown", subopt),
subopt,
- suboptlen);
+ suboptlen));
bp += len;
len = 0;
break;
}
- printf("\n\t %s SubOption %u, length %u: ",
+ ND_PRINT((ndo, "\n\t %s SubOption %u, length %u: ",
tok2str(agent_suboption_values, "Unknown", subopt),
subopt,
- suboptlen);
+ suboptlen));
switch (subopt) {
- case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */
- case AGENT_SUBOPTION_REMOTE_ID:
- case AGENT_SUBOPTION_SUBSCRIBER_ID:
- fn_printn(bp, suboptlen, NULL);
- break;
+ case AGENT_SUBOPTION_CIRCUIT_ID: /* fall through */
+ case AGENT_SUBOPTION_REMOTE_ID:
+ case AGENT_SUBOPTION_SUBSCRIBER_ID:
+ fn_printn(ndo, bp, suboptlen, NULL);
+ break;
default:
- print_unknown_data(gndo,bp, "\n\t\t", suboptlen);
+ print_unknown_data(ndo, bp, "\n\t\t", suboptlen);
}
len -= suboptlen;
/* this option should be at least 5 bytes long */
if (len < 5) {
- printf("ERROR: option %u len %u < 5 bytes",
- TAG_CLASSLESS_STATIC_RT, len);
+ ND_PRINT((ndo, "ERROR: option %u len %u < 5 bytes",
+ TAG_CLASSLESS_STATIC_RT, len));
bp += len;
len = 0;
break;
}
while (len > 0) {
if (!first)
- putchar(',');
+ ND_PRINT((ndo, ","));
mask_width = *bp++;
len--;
/* mask_width <= 32 */
if (mask_width > 32) {
- printf("[ERROR: Mask width (%d) > 32]", mask_width);
+ ND_PRINT((ndo, "[ERROR: Mask width (%d) > 32]", mask_width));
bp += len;
len = 0;
break;
significant_octets = (mask_width + 7) / 8;
/* significant octets + router(4) */
if (len < significant_octets + 4) {
- printf("[ERROR: Remaining length (%u) < %u bytes]", len, significant_octets + 4);
+ ND_PRINT((ndo, "[ERROR: Remaining length (%u) < %u bytes]", len, significant_octets + 4));
bp += len;
len = 0;
break;
}
- putchar('(');
+ ND_PRINT((ndo, "("));
if (mask_width == 0)
- printf("default");
+ ND_PRINT((ndo, "default"));
else {
for (i = 0; i < significant_octets ; i++) {
if (i > 0)
- putchar('.');
- printf("%d", *bp++);
+ ND_PRINT((ndo, "."));
+ ND_PRINT((ndo, "%d", *bp++));
}
for (i = significant_octets ; i < 4 ; i++)
- printf(".0");
- printf("/%d", mask_width);
+ ND_PRINT((ndo, ".0"));
+ ND_PRINT((ndo, "/%d", mask_width));
}
memcpy((char *)&ul, (const char *)bp, sizeof(ul));
- printf(":%s)", ipaddr_string(&ul));
+ ND_PRINT((ndo, ":%s)", ipaddr_string(ndo, &ul)));
bp += sizeof(ul);
len -= (significant_octets + 4);
first = 0;
break;
default:
- printf("[unknown special tag %u, size %u]",
- tag, len);
+ ND_PRINT((ndo, "[unknown special tag %u, size %u]",
+ tag, len));
bp += len;
len = 0;
break;
}
/* Data left over? */
if (len) {
- printf("\n\t trailing data length %u", len);
+ ND_PRINT((ndo, "\n\t trailing data length %u", len));
bp += len;
}
}
return;
trunc:
- printf("|[rfc1048]");
+ ND_PRINT((ndo, "|[rfc1048]"));
}
static void
-cmu_print(register const u_char *bp)
+cmu_print(netdissect_options *ndo,
+ register const u_char *bp)
{
register const struct cmu_vend *cmu;
-#define PRINTCMUADDR(m, s) { TCHECK(cmu->m); \
+#define PRINTCMUADDR(m, s) { ND_TCHECK(cmu->m); \
if (cmu->m.s_addr != 0) \
- printf(" %s:%s", s, ipaddr_string(&cmu->m.s_addr)); }
+ ND_PRINT((ndo, " %s:%s", s, ipaddr_string(ndo, &cmu->m.s_addr))); }
- printf(" vend-cmu");
+ ND_PRINT((ndo, " vend-cmu"));
cmu = (const struct cmu_vend *)bp;
/* Only print if there are unknown bits */
- TCHECK(cmu->v_flags);
+ ND_TCHECK(cmu->v_flags);
if ((cmu->v_flags & ~(VF_SMASK)) != 0)
- printf(" F:0x%x", cmu->v_flags);
+ ND_PRINT((ndo, " F:0x%x", cmu->v_flags));
PRINTCMUADDR(v_dgate, "DG");
PRINTCMUADDR(v_smask, cmu->v_flags & VF_SMASK ? "SM" : "SM*");
PRINTCMUADDR(v_dns1, "NS1");
return;
trunc:
- fputs(tstr, stdout);
+ ND_PRINT((ndo, "%s", tstr));
#undef PRINTCMUADDR
}
projects / tcpdump / blobdiff