2 * Decode and print Zephyr packets.
4 * Copyright (c) 2001 Nickolai Zeldovich <kolya@MIT.EDU>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that: (1) source code
9 * distributions retain the above copyright notice and this paragraph
10 * in its entirety, and (2) distributions including binary code include
11 * the above copyright notice and this paragraph in its entirety in
12 * the documentation or other materials provided with the distribution.
13 * The name of the author(s) may not be used to endorse or promote
14 * products derived from this software without specific prior written
15 * permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 static const char rcsid[] _U_ =
23 "@(#) $Header: /tcpdump/master/tcpdump/print-zephyr.c,v 1.6.2.2 2003/11/16 08:51:56 guy Exp $";
30 #include <tcpdump-stdinc.h>
36 #include "interface.h"
51 const char *recipient;
56 /* Other fields follow here.. */
71 static struct tok z_types[] = {
72 { Z_PACKET_UNSAFE, "unsafe" },
73 { Z_PACKET_UNACKED, "unacked" },
74 { Z_PACKET_ACKED, "acked" },
75 { Z_PACKET_HMACK, "hm-ack" },
76 { Z_PACKET_HMCTL, "hm-ctl" },
77 { Z_PACKET_SERVACK, "serv-ack" },
78 { Z_PACKET_SERVNAK, "serv-nak" },
79 { Z_PACKET_CLIENTACK, "client-ack" },
80 { Z_PACKET_STAT, "stat" }
86 parse_field(char **pptr, int *len)
90 if (*len <= 0 || !pptr || !*pptr)
92 if (*pptr > (char *) snapend)
96 while (*pptr <= (char *) snapend && *len >= 0 && **pptr) {
102 if (*len < 0 || *pptr > (char *) snapend)
108 z_triple(char *class, char *inst, const char *recipient)
112 snprintf(z_buf, sizeof(z_buf), "<%s,%s,%s>", class, inst, recipient);
113 z_buf[sizeof(z_buf)-1] = '\0';
118 str_to_lower(char *string)
120 strncpy(z_buf, string, sizeof(z_buf));
121 z_buf[sizeof(z_buf)-1] = '\0';
125 *string = tolower((unsigned char)(*string));
133 zephyr_print(const u_char *cp, int length)
136 char *parse = (char *) cp;
137 int parselen = length;
141 #define PARSE_STRING \
142 s = parse_field(&parse, &parselen); \
145 #define PARSE_FIELD_INT(field) \
147 if (!lose) field = strtol(s, 0, 16);
149 #define PARSE_FIELD_STR(field) \
151 if (!lose) field = s;
153 PARSE_FIELD_STR(z.version);
155 if (strncmp(z.version, "ZEPH", 4))
158 PARSE_FIELD_INT(z.numfields);
159 PARSE_FIELD_INT(z.kind);
160 PARSE_FIELD_STR(z.uid);
161 PARSE_FIELD_INT(z.port);
162 PARSE_FIELD_INT(z.auth);
163 PARSE_FIELD_INT(z.authlen);
164 PARSE_FIELD_STR(z.authdata);
165 PARSE_FIELD_STR(z.class);
166 PARSE_FIELD_STR(z.inst);
167 PARSE_FIELD_STR(z.opcode);
168 PARSE_FIELD_STR(z.sender);
169 PARSE_FIELD_STR(z.recipient);
170 PARSE_FIELD_STR(z.format);
171 PARSE_FIELD_INT(z.cksum);
172 PARSE_FIELD_INT(z.multi);
173 PARSE_FIELD_STR(z.multi_uid);
176 printf(" [|zephyr] (%d)", length);
181 if (strncmp(z.version+4, "0.2", 3)) {
182 printf(" v%s", z.version+4);
186 printf(" %s", tok2str(z_types, "type %d", z.kind));
187 if (z.kind == Z_PACKET_SERVACK) {
188 /* Initialization to silence warnings */
189 char *ackdata = NULL;
190 PARSE_FIELD_STR(ackdata);
191 if (!lose && strcmp(ackdata, "SENT"))
192 printf("/%s", str_to_lower(ackdata));
194 if (*z.sender) printf(" %s", z.sender);
196 if (!strcmp(z.class, "USER_LOCATE")) {
197 if (!strcmp(z.opcode, "USER_HIDE"))
199 else if (!strcmp(z.opcode, "USER_UNHIDE"))
202 printf(" locate %s", z.inst);
206 if (!strcmp(z.class, "ZEPHYR_ADMIN")) {
207 printf(" zephyr-admin %s", str_to_lower(z.opcode));
211 if (!strcmp(z.class, "ZEPHYR_CTL")) {
212 if (!strcmp(z.inst, "CLIENT")) {
213 if (!strcmp(z.opcode, "SUBSCRIBE") ||
214 !strcmp(z.opcode, "SUBSCRIBE_NODEFS") ||
215 !strcmp(z.opcode, "UNSUBSCRIBE")) {
217 printf(" %ssub%s", strcmp(z.opcode, "SUBSCRIBE") ? "un" : "",
218 strcmp(z.opcode, "SUBSCRIBE_NODEFS") ? "" :
220 if (z.kind != Z_PACKET_SERVACK) {
221 /* Initialization to silence warnings */
222 char *c = NULL, *i = NULL, *r = NULL;
226 if (!lose) printf(" %s", z_triple(c, i, r));
231 if (!strcmp(z.opcode, "GIMME")) {
236 if (!strcmp(z.opcode, "GIMMEDEFS")) {
237 printf(" gimme-defs");
241 if (!strcmp(z.opcode, "CLEARSUB")) {
242 printf(" clear-subs");
246 printf(" %s", str_to_lower(z.opcode));
250 if (!strcmp(z.inst, "HM")) {
251 printf(" %s", str_to_lower(z.opcode));
255 if (!strcmp(z.inst, "REALM")) {
256 if (!strcmp(z.opcode, "ADD_SUBSCRIBE"))
257 printf(" realm add-subs");
258 if (!strcmp(z.opcode, "REQ_SUBSCRIBE"))
259 printf(" realm req-subs");
260 if (!strcmp(z.opcode, "RLM_SUBSCRIBE"))
261 printf(" realm rlm-sub");
262 if (!strcmp(z.opcode, "RLM_UNSUBSCRIBE"))
263 printf(" realm rlm-unsub");
268 if (!strcmp(z.class, "HM_CTL")) {
269 printf(" hm_ctl %s", str_to_lower(z.inst));
270 printf(" %s", str_to_lower(z.opcode));
274 if (!strcmp(z.class, "HM_STAT")) {
275 if (!strcmp(z.inst, "HMST_CLIENT") && !strcmp(z.opcode, "GIMMESTATS")) {
276 printf(" get-client-stats");
281 if (!strcmp(z.class, "WG_CTL")) {
282 printf(" wg_ctl %s", str_to_lower(z.inst));
283 printf(" %s", str_to_lower(z.opcode));
287 if (!strcmp(z.class, "LOGIN")) {
288 if (!strcmp(z.opcode, "USER_FLUSH")) {
289 printf(" flush_locs");
293 if (!strcmp(z.opcode, "NONE") ||
294 !strcmp(z.opcode, "OPSTAFF") ||
295 !strcmp(z.opcode, "REALM-VISIBLE") ||
296 !strcmp(z.opcode, "REALM-ANNOUNCED") ||
297 !strcmp(z.opcode, "NET-VISIBLE") ||
298 !strcmp(z.opcode, "NET-ANNOUNCED")) {
299 printf(" set-exposure %s", str_to_lower(z.opcode));
307 printf(" to %s", z_triple(z.class, z.inst, z.recipient));
309 printf(" op %s", z.opcode);