/*
* Decode and print Zephyr packets.
*
- * http://web.mit.edu/zephyr/doc/protocol
+ * https://web.mit.edu/zephyr/doc/protocol
*
* All rights reserved.
/* \summary: Zephyr printer */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
+#include "netdissect-ctype.h"
+
#include "netdissect.h"
+#include "extract.h"
struct z_packet {
const char *version;
static char z_buf[256];
static const char *
-parse_field(netdissect_options *ndo, const char **pptr, int *len, int *truncated)
+parse_field(netdissect_options *ndo, const char **pptr, int *len)
{
const char *s;
/* Ran out of packet data without finding it */
return NULL;
}
- if (!ND_TTEST_SIZE(*pptr)) {
- /* Ran out of captured data without finding it */
- *truncated = 1;
- return NULL;
- }
- if (**pptr == '\0') {
+ if (GET_U_1(*pptr) == '\0') {
/* Found it */
break;
}
zb_string = z_buf;
while (*zb_string) {
- *zb_string = tolower((unsigned char)(*zb_string));
+ *zb_string = ND_ASCII_TOLOWER(*zb_string);
zb_string++;
}
return z_buf;
}
+#define ZEPHYR_PRINT(str1,str2) \
+{ ND_PRINT("%s", (str1)); fn_print_str(ndo, (const u_char *)(str2)); }
+
void
-zephyr_print(netdissect_options *ndo, const u_char *cp, int length)
+zephyr_print(netdissect_options *ndo, const u_char *cp, u_int length)
{
- struct z_packet z;
+ struct z_packet z = {
+ NULL, /* version */
+ 0, /* numfields */
+ 0, /* kind */
+ NULL, /* uid */
+ 0, /* port */
+ 0, /* auth */
+ 0, /* authlen */
+ NULL, /* authdata */
+ NULL, /* class */
+ NULL, /* inst */
+ NULL, /* opcode */
+ NULL, /* sender */
+ NULL, /* recipient */
+ NULL, /* format */
+ 0, /* cksum */
+ 0, /* multi */
+ NULL /* multi_uid */
+ };
const char *parse = (const char *) cp;
int parselen = length;
const char *s;
int lose = 0;
- int truncated = 0;
+ ndo->ndo_protocol = "zephyr";
/* squelch compiler warnings */
- z.kind = 0;
- z.class = 0;
- z.inst = 0;
- z.opcode = 0;
- z.sender = 0;
- z.recipient = 0;
-
#define PARSE_STRING \
- s = parse_field(ndo, &parse, &parselen, &truncated); \
- if (truncated) goto trunc; \
+ s = parse_field(ndo, &parse, &parselen); \
if (!s) lose = 1;
#define PARSE_FIELD_INT(field) \
if (!lose) field = s;
PARSE_FIELD_STR(z.version);
- if (lose) return;
+ if (lose)
+ goto invalid;
+
if (strncmp(z.version, "ZEPH", 4))
return;
PARSE_FIELD_STR(z.multi_uid);
if (lose)
- goto trunc;
+ goto invalid;
- ND_PRINT((ndo, " zephyr"));
+ ND_PRINT(" zephyr");
if (strncmp(z.version+4, "0.2", 3)) {
- ND_PRINT((ndo, " v%s", z.version+4));
+ ZEPHYR_PRINT(" v", z.version+4)
return;
}
- ND_PRINT((ndo, " %s", tok2str(z_types, "type %d", z.kind)));
+ ND_PRINT(" %s", tok2str(z_types, "type %d", z.kind));
if (z.kind == Z_PACKET_SERVACK) {
/* Initialization to silence warnings */
const char *ackdata = NULL;
PARSE_FIELD_STR(ackdata);
if (!lose && strcmp(ackdata, "SENT"))
- ND_PRINT((ndo, "/%s", str_to_lower(ackdata)));
+ ZEPHYR_PRINT("/", str_to_lower(ackdata))
}
- if (*z.sender) ND_PRINT((ndo, " %s", z.sender));
+ if (*z.sender) ZEPHYR_PRINT(" ", z.sender);
if (!strcmp(z.class, "USER_LOCATE")) {
if (!strcmp(z.opcode, "USER_HIDE"))
- ND_PRINT((ndo, " hide"));
+ ND_PRINT(" hide");
else if (!strcmp(z.opcode, "USER_UNHIDE"))
- ND_PRINT((ndo, " unhide"));
+ ND_PRINT(" unhide");
else
- ND_PRINT((ndo, " locate %s", z.inst));
+ ZEPHYR_PRINT(" locate ", z.inst);
return;
}
if (!strcmp(z.class, "ZEPHYR_ADMIN")) {
- ND_PRINT((ndo, " zephyr-admin %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" zephyr-admin ", str_to_lower(z.opcode));
return;
}
!strcmp(z.opcode, "SUBSCRIBE_NODEFS") ||
!strcmp(z.opcode, "UNSUBSCRIBE")) {
- ND_PRINT((ndo, " %ssub%s", strcmp(z.opcode, "SUBSCRIBE") ? "un" : "",
+ ND_PRINT(" %ssub%s", strcmp(z.opcode, "SUBSCRIBE") ? "un" : "",
strcmp(z.opcode, "SUBSCRIBE_NODEFS") ? "" :
- "-nodefs"));
+ "-nodefs");
if (z.kind != Z_PACKET_SERVACK) {
/* Initialization to silence warnings */
const char *c = NULL, *i = NULL, *r = NULL;
PARSE_FIELD_STR(c);
PARSE_FIELD_STR(i);
PARSE_FIELD_STR(r);
- if (!lose) ND_PRINT((ndo, " %s", z_triple(c, i, r)));
+ if (!lose) ZEPHYR_PRINT(" ", z_triple(c, i, r));
}
return;
}
if (!strcmp(z.opcode, "GIMME")) {
- ND_PRINT((ndo, " ret"));
+ ND_PRINT(" ret");
return;
}
if (!strcmp(z.opcode, "GIMMEDEFS")) {
- ND_PRINT((ndo, " gimme-defs"));
+ ND_PRINT(" gimme-defs");
return;
}
if (!strcmp(z.opcode, "CLEARSUB")) {
- ND_PRINT((ndo, " clear-subs"));
+ ND_PRINT(" clear-subs");
return;
}
- ND_PRINT((ndo, " %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
if (!strcmp(z.inst, "HM")) {
- ND_PRINT((ndo, " %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
if (!strcmp(z.inst, "REALM")) {
if (!strcmp(z.opcode, "ADD_SUBSCRIBE"))
- ND_PRINT((ndo, " realm add-subs"));
+ ND_PRINT(" realm add-subs");
if (!strcmp(z.opcode, "REQ_SUBSCRIBE"))
- ND_PRINT((ndo, " realm req-subs"));
+ ND_PRINT(" realm req-subs");
if (!strcmp(z.opcode, "RLM_SUBSCRIBE"))
- ND_PRINT((ndo, " realm rlm-sub"));
+ ND_PRINT(" realm rlm-sub");
if (!strcmp(z.opcode, "RLM_UNSUBSCRIBE"))
- ND_PRINT((ndo, " realm rlm-unsub"));
+ ND_PRINT(" realm rlm-unsub");
return;
}
}
if (!strcmp(z.class, "HM_CTL")) {
- ND_PRINT((ndo, " hm_ctl %s", str_to_lower(z.inst)));
- ND_PRINT((ndo, " %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" hm_ctl ", str_to_lower(z.inst));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
if (!strcmp(z.class, "HM_STAT")) {
if (!strcmp(z.inst, "HMST_CLIENT") && !strcmp(z.opcode, "GIMMESTATS")) {
- ND_PRINT((ndo, " get-client-stats"));
+ ND_PRINT(" get-client-stats");
return;
}
}
if (!strcmp(z.class, "WG_CTL")) {
- ND_PRINT((ndo, " wg_ctl %s", str_to_lower(z.inst)));
- ND_PRINT((ndo, " %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" wg_ctl ", str_to_lower(z.inst));
+ ZEPHYR_PRINT(" ", str_to_lower(z.opcode));
return;
}
if (!strcmp(z.class, "LOGIN")) {
if (!strcmp(z.opcode, "USER_FLUSH")) {
- ND_PRINT((ndo, " flush_locs"));
+ ND_PRINT(" flush_locs");
return;
}
!strcmp(z.opcode, "REALM-ANNOUNCED") ||
!strcmp(z.opcode, "NET-VISIBLE") ||
!strcmp(z.opcode, "NET-ANNOUNCED")) {
- ND_PRINT((ndo, " set-exposure %s", str_to_lower(z.opcode)));
+ ZEPHYR_PRINT(" set-exposure ", str_to_lower(z.opcode));
return;
}
}
if (!*z.recipient)
z.recipient = "*";
- ND_PRINT((ndo, " to %s", z_triple(z.class, z.inst, z.recipient)));
+ ZEPHYR_PRINT(" to ", z_triple(z.class, z.inst, z.recipient));
if (*z.opcode)
- ND_PRINT((ndo, " op %s", z.opcode));
+ ZEPHYR_PRINT(" op ", z.opcode);
return;
-trunc:
- ND_PRINT((ndo, " [|zephyr] (%d)", length));
- return;
+invalid:
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff