Commit | Line | Data |
---|---|---|
b423e985 | 1 | /* |
8ea4199d DF |
2 | * Copyright (c) 1985 Regents of the University of California. |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
b423e985 RC |
5 | */ |
6 | ||
8ea4199d | 7 | #ifndef lint |
127b68cb | 8 | static char sccsid[] = "@(#)res_debug.c 5.12 (Berkeley) %G%"; |
8ea4199d DF |
9 | #endif not lint |
10 | ||
d1c1ab68 JB |
11 | #if defined(lint) && !defined(DEBUG) |
12 | #define DEBUG | |
13 | #endif | |
14 | ||
0d22afd1 RC |
15 | #include <sys/types.h> |
16 | #include <netinet/in.h> | |
17 | #include <stdio.h> | |
02a51825 | 18 | #include <arpa/nameser.h> |
0d22afd1 RC |
19 | |
20 | extern char *p_cdname(), *p_rr(), *p_type(), *p_class(); | |
21 | extern char *inet_ntoa(); | |
22 | ||
23 | char *opcodes[] = { | |
24 | "QUERY", | |
25 | "IQUERY", | |
26 | "CQUERYM", | |
27 | "CQUERYU", | |
28 | "4", | |
29 | "5", | |
30 | "6", | |
31 | "7", | |
32 | "8", | |
33 | "9", | |
34 | "10", | |
35 | "UPDATEA", | |
36 | "UPDATED", | |
37 | "UPDATEM", | |
38 | "ZONEINIT", | |
39 | "ZONEREF", | |
40 | }; | |
41 | ||
42 | char *rcodes[] = { | |
43 | "NOERROR", | |
44 | "FORMERR", | |
45 | "SERVFAIL", | |
46 | "NXDOMAIN", | |
47 | "NOTIMP", | |
48 | "REFUSED", | |
49 | "6", | |
50 | "7", | |
51 | "8", | |
52 | "9", | |
53 | "10", | |
54 | "11", | |
55 | "12", | |
56 | "13", | |
57 | "14", | |
58 | "NOCHANGE", | |
59 | }; | |
60 | ||
a73d974c KD |
61 | p_query(msg) |
62 | char *msg; | |
63 | { | |
d1c1ab68 | 64 | #ifdef DEBUG |
a73d974c | 65 | fp_query(msg,stdout); |
d1c1ab68 | 66 | #endif |
a73d974c KD |
67 | } |
68 | ||
0d22afd1 RC |
69 | /* |
70 | * Print the contents of a query. | |
71 | * This is intended to be primarily a debugging routine. | |
72 | */ | |
a73d974c | 73 | fp_query(msg,file) |
e515a559 | 74 | char *msg; |
a73d974c | 75 | FILE *file; |
0d22afd1 | 76 | { |
d1c1ab68 | 77 | #ifdef DEBUG |
0d22afd1 RC |
78 | register char *cp; |
79 | register HEADER *hp; | |
80 | register int n; | |
81 | ||
82 | /* | |
83 | * Print header fields. | |
84 | */ | |
e515a559 RC |
85 | hp = (HEADER *)msg; |
86 | cp = msg + sizeof(HEADER); | |
a73d974c KD |
87 | fprintf(file,"HEADER:\n"); |
88 | fprintf(file,"\topcode = %s", opcodes[hp->opcode]); | |
89 | fprintf(file,", id = %d", ntohs(hp->id)); | |
90 | fprintf(file,", rcode = %s\n", rcodes[hp->rcode]); | |
91 | fprintf(file,"\theader flags: "); | |
0d22afd1 | 92 | if (hp->qr) |
a73d974c | 93 | fprintf(file," qr"); |
0d22afd1 | 94 | if (hp->aa) |
a73d974c | 95 | fprintf(file," aa"); |
0d22afd1 | 96 | if (hp->tc) |
a73d974c | 97 | fprintf(file," tc"); |
0d22afd1 | 98 | if (hp->rd) |
a73d974c | 99 | fprintf(file," rd"); |
0d22afd1 | 100 | if (hp->ra) |
a73d974c | 101 | fprintf(file," ra"); |
0d22afd1 | 102 | if (hp->pr) |
a73d974c KD |
103 | fprintf(file," pr"); |
104 | fprintf(file,"\n\tqdcount = %d", ntohs(hp->qdcount)); | |
105 | fprintf(file,", ancount = %d", ntohs(hp->ancount)); | |
106 | fprintf(file,", nscount = %d", ntohs(hp->nscount)); | |
107 | fprintf(file,", arcount = %d\n\n", ntohs(hp->arcount)); | |
0d22afd1 RC |
108 | /* |
109 | * Print question records. | |
110 | */ | |
111 | if (n = ntohs(hp->qdcount)) { | |
a73d974c | 112 | fprintf(file,"QUESTIONS:\n"); |
0d22afd1 | 113 | while (--n >= 0) { |
a73d974c KD |
114 | fprintf(file,"\t"); |
115 | cp = p_cdname(cp, msg, file); | |
0d22afd1 RC |
116 | if (cp == NULL) |
117 | return; | |
a73d974c | 118 | fprintf(file,", type = %s", p_type(getshort(cp))); |
0d22afd1 | 119 | cp += sizeof(u_short); |
a73d974c | 120 | fprintf(file,", class = %s\n\n", p_class(getshort(cp))); |
0d22afd1 RC |
121 | cp += sizeof(u_short); |
122 | } | |
123 | } | |
124 | /* | |
125 | * Print authoritative answer records | |
126 | */ | |
127 | if (n = ntohs(hp->ancount)) { | |
a73d974c | 128 | fprintf(file,"ANSWERS:\n"); |
0d22afd1 | 129 | while (--n >= 0) { |
a73d974c KD |
130 | fprintf(file,"\t"); |
131 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
132 | if (cp == NULL) |
133 | return; | |
134 | } | |
135 | } | |
136 | /* | |
137 | * print name server records | |
138 | */ | |
139 | if (n = ntohs(hp->nscount)) { | |
a73d974c | 140 | fprintf(file,"NAME SERVERS:\n"); |
0d22afd1 | 141 | while (--n >= 0) { |
a73d974c KD |
142 | fprintf(file,"\t"); |
143 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
144 | if (cp == NULL) |
145 | return; | |
146 | } | |
147 | } | |
148 | /* | |
149 | * print additional records | |
150 | */ | |
151 | if (n = ntohs(hp->arcount)) { | |
a73d974c | 152 | fprintf(file,"ADDITIONAL RECORDS:\n"); |
0d22afd1 | 153 | while (--n >= 0) { |
a73d974c KD |
154 | fprintf(file,"\t"); |
155 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
156 | if (cp == NULL) |
157 | return; | |
158 | } | |
159 | } | |
d1c1ab68 | 160 | #endif |
0d22afd1 RC |
161 | } |
162 | ||
163 | char * | |
a73d974c | 164 | p_cdname(cp, msg, file) |
e515a559 | 165 | char *cp, *msg; |
a73d974c | 166 | FILE *file; |
0d22afd1 | 167 | { |
d1c1ab68 | 168 | #ifdef DEBUG |
0d22afd1 RC |
169 | char name[MAXDNAME]; |
170 | int n; | |
171 | ||
127b68cb | 172 | if ((n = dn_expand(msg, msg + 512, cp, name, sizeof(name))) < 0) |
0d22afd1 RC |
173 | return (NULL); |
174 | if (name[0] == '\0') { | |
175 | name[0] = '.'; | |
176 | name[1] = '\0'; | |
177 | } | |
a73d974c | 178 | fputs(name, file); |
0d22afd1 | 179 | return (cp + n); |
d1c1ab68 | 180 | #endif |
0d22afd1 RC |
181 | } |
182 | ||
183 | /* | |
184 | * Print resource record fields in human readable form. | |
185 | */ | |
186 | char * | |
a73d974c | 187 | p_rr(cp, msg, file) |
e515a559 | 188 | char *cp, *msg; |
a73d974c | 189 | FILE *file; |
0d22afd1 | 190 | { |
d1c1ab68 | 191 | #ifdef DEBUG |
0d22afd1 RC |
192 | int type, class, dlen, n, c; |
193 | struct in_addr inaddr; | |
194 | char *cp1; | |
195 | ||
a73d974c | 196 | if ((cp = p_cdname(cp, msg, file)) == NULL) |
0d22afd1 | 197 | return (NULL); /* compression error */ |
a73d974c | 198 | fprintf(file,"\n\ttype = %s", p_type(type = getshort(cp))); |
0d22afd1 | 199 | cp += sizeof(u_short); |
a73d974c | 200 | fprintf(file,", class = %s", p_class(class = getshort(cp))); |
0d22afd1 | 201 | cp += sizeof(u_short); |
dd4e122b | 202 | fprintf(file,", ttl = %u", getlong(cp)); |
0d22afd1 | 203 | cp += sizeof(u_long); |
a73d974c | 204 | fprintf(file,", dlen = %d\n", dlen = getshort(cp)); |
0d22afd1 RC |
205 | cp += sizeof(u_short); |
206 | cp1 = cp; | |
207 | /* | |
208 | * Print type specific data, if appropriate | |
209 | */ | |
210 | switch (type) { | |
211 | case T_A: | |
212 | switch (class) { | |
213 | case C_IN: | |
11e57e73 | 214 | bcopy(cp, (char *)&inaddr, sizeof(inaddr)); |
0d22afd1 | 215 | if (dlen == 4) { |
a73d974c | 216 | fprintf(file,"\tinternet address = %s\n", |
0d22afd1 RC |
217 | inet_ntoa(inaddr)); |
218 | cp += dlen; | |
219 | } else if (dlen == 7) { | |
a73d974c | 220 | fprintf(file,"\tinternet address = %s", |
0d22afd1 | 221 | inet_ntoa(inaddr)); |
a73d974c KD |
222 | fprintf(file,", protocol = %d", cp[4]); |
223 | fprintf(file,", port = %d\n", | |
0d22afd1 RC |
224 | (cp[5] << 8) + cp[6]); |
225 | cp += dlen; | |
226 | } | |
227 | break; | |
228 | } | |
229 | break; | |
230 | case T_CNAME: | |
231 | case T_MB: | |
018df4a9 | 232 | #ifdef OLDRR |
0d22afd1 RC |
233 | case T_MD: |
234 | case T_MF: | |
018df4a9 | 235 | #endif /* OLDRR */ |
0d22afd1 RC |
236 | case T_MG: |
237 | case T_MR: | |
238 | case T_NS: | |
239 | case T_PTR: | |
a73d974c KD |
240 | fprintf(file,"\tdomain name = "); |
241 | cp = p_cdname(cp, msg, file); | |
242 | fprintf(file,"\n"); | |
0d22afd1 RC |
243 | break; |
244 | ||
245 | case T_HINFO: | |
246 | if (n = *cp++) { | |
a73d974c | 247 | fprintf(file,"\tCPU=%.*s\n", n, cp); |
0d22afd1 RC |
248 | cp += n; |
249 | } | |
250 | if (n = *cp++) { | |
a73d974c | 251 | fprintf(file,"\tOS=%.*s\n", n, cp); |
0d22afd1 RC |
252 | cp += n; |
253 | } | |
254 | break; | |
255 | ||
256 | case T_SOA: | |
a73d974c KD |
257 | fprintf(file,"\torigin = "); |
258 | cp = p_cdname(cp, msg, file); | |
259 | fprintf(file,"\n\tmail addr = "); | |
260 | cp = p_cdname(cp, msg, file); | |
261 | fprintf(file,"\n\tserial=%ld", getlong(cp)); | |
0d22afd1 | 262 | cp += sizeof(u_long); |
a73d974c | 263 | fprintf(file,", refresh=%ld", getlong(cp)); |
0d22afd1 | 264 | cp += sizeof(u_long); |
a73d974c | 265 | fprintf(file,", retry=%ld", getlong(cp)); |
0d22afd1 | 266 | cp += sizeof(u_long); |
a73d974c | 267 | fprintf(file,", expire=%ld", getlong(cp)); |
0d22afd1 | 268 | cp += sizeof(u_long); |
a73d974c | 269 | fprintf(file,", min=%ld\n", getlong(cp)); |
0d22afd1 RC |
270 | cp += sizeof(u_long); |
271 | break; | |
272 | ||
73546a32 | 273 | case T_MX: |
018df4a9 KD |
274 | fprintf(file,"\tpreference = %ld,",getshort(cp)); |
275 | cp += sizeof(u_short); | |
276 | fprintf(file," name = "); | |
73546a32 | 277 | cp = p_cdname(cp, msg, file); |
73546a32 KD |
278 | break; |
279 | ||
e515a559 | 280 | case T_MINFO: |
a73d974c KD |
281 | fprintf(file,"\trequests = "); |
282 | cp = p_cdname(cp, msg, file); | |
283 | fprintf(file,"\n\terrors = "); | |
284 | cp = p_cdname(cp, msg, file); | |
e515a559 RC |
285 | break; |
286 | ||
0d22afd1 | 287 | case T_UINFO: |
a73d974c | 288 | fprintf(file,"\t%s\n", cp); |
0d22afd1 RC |
289 | cp += dlen; |
290 | break; | |
291 | ||
292 | case T_UID: | |
293 | case T_GID: | |
294 | if (dlen == 4) { | |
a73d974c | 295 | fprintf(file,"\t%ld\n", getlong(cp)); |
0d22afd1 RC |
296 | cp += sizeof(int); |
297 | } | |
298 | break; | |
299 | ||
300 | case T_WKS: | |
301 | if (dlen < sizeof(u_long) + 1) | |
302 | break; | |
11e57e73 | 303 | bcopy(cp, (char *)&inaddr, sizeof(inaddr)); |
0d22afd1 | 304 | cp += sizeof(u_long); |
a73d974c | 305 | fprintf(file,"\tinternet address = %s, protocol = %d\n\t", |
0d22afd1 RC |
306 | inet_ntoa(inaddr), *cp++); |
307 | n = 0; | |
308 | while (cp < cp1 + dlen) { | |
309 | c = *cp++; | |
310 | do { | |
a943feed | 311 | if (c & 0200) |
a73d974c | 312 | fprintf(file," %d", n); |
a943feed | 313 | c <<= 1; |
0d22afd1 RC |
314 | } while (++n & 07); |
315 | } | |
a73d974c | 316 | putc('\n',file); |
0d22afd1 RC |
317 | break; |
318 | ||
319 | default: | |
a73d974c | 320 | fprintf(file,"\t???\n"); |
0d22afd1 RC |
321 | cp += dlen; |
322 | } | |
323 | if (cp != cp1 + dlen) | |
a73d974c KD |
324 | fprintf(file,"packet size error (%#x != %#x)\n", cp, cp1+dlen); |
325 | fprintf(file,"\n"); | |
0d22afd1 | 326 | return (cp); |
d1c1ab68 | 327 | #endif |
0d22afd1 RC |
328 | } |
329 | ||
330 | static char nbuf[20]; | |
331 | extern char *sprintf(); | |
332 | ||
333 | /* | |
334 | * Return a string for the type | |
335 | */ | |
336 | char * | |
337 | p_type(type) | |
338 | int type; | |
339 | { | |
0d22afd1 RC |
340 | switch (type) { |
341 | case T_A: | |
342 | return("A"); | |
343 | case T_NS: /* authoritative server */ | |
344 | return("NS"); | |
018df4a9 | 345 | #ifdef OLDRR |
0d22afd1 RC |
346 | case T_MD: /* mail destination */ |
347 | return("MD"); | |
348 | case T_MF: /* mail forwarder */ | |
349 | return("MF"); | |
018df4a9 | 350 | #endif /* OLDRR */ |
0d22afd1 RC |
351 | case T_CNAME: /* connonical name */ |
352 | return("CNAME"); | |
353 | case T_SOA: /* start of authority zone */ | |
354 | return("SOA"); | |
355 | case T_MB: /* mailbox domain name */ | |
356 | return("MB"); | |
357 | case T_MG: /* mail group member */ | |
358 | return("MG"); | |
73546a32 KD |
359 | case T_MX: /* mail routing info */ |
360 | return("MX"); | |
0d22afd1 RC |
361 | case T_MR: /* mail rename name */ |
362 | return("MR"); | |
363 | case T_NULL: /* null resource record */ | |
364 | return("NULL"); | |
365 | case T_WKS: /* well known service */ | |
366 | return("WKS"); | |
367 | case T_PTR: /* domain name pointer */ | |
368 | return("PTR"); | |
369 | case T_HINFO: /* host information */ | |
370 | return("HINFO"); | |
371 | case T_MINFO: /* mailbox information */ | |
372 | return("MINFO"); | |
373 | case T_AXFR: /* zone transfer */ | |
374 | return("AXFR"); | |
375 | case T_MAILB: /* mail box */ | |
376 | return("MAILB"); | |
377 | case T_MAILA: /* mail address */ | |
378 | return("MAILA"); | |
379 | case T_ANY: /* matches any type */ | |
380 | return("ANY"); | |
381 | case T_UINFO: | |
382 | return("UINFO"); | |
383 | case T_UID: | |
384 | return("UID"); | |
385 | case T_GID: | |
386 | return("GID"); | |
387 | default: | |
388 | return (sprintf(nbuf, "%d", type)); | |
389 | } | |
390 | } | |
391 | ||
392 | /* | |
393 | * Return a mnemonic for class | |
394 | */ | |
395 | char * | |
396 | p_class(class) | |
397 | int class; | |
398 | { | |
399 | ||
400 | switch (class) { | |
401 | case C_IN: /* internet class */ | |
402 | return("IN"); | |
0d22afd1 RC |
403 | case C_ANY: /* matches any class */ |
404 | return("ANY"); | |
405 | default: | |
406 | return (sprintf(nbuf, "%d", class)); | |
407 | } | |
408 | } |