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 | ||
2ce81398 | 7 | #if defined(LIBC_SCCS) && !defined(lint) |
cd43bd6a | 8 | static char sccsid[] = "@(#)res_debug.c 5.19 (Berkeley) %G%"; |
2ce81398 | 9 | #endif LIBC_SCCS and not lint |
8ea4199d | 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 | ||
cd43bd6a | 23 | char *_res_opcodes[] = { |
0d22afd1 RC |
24 | "QUERY", |
25 | "IQUERY", | |
26 | "CQUERYM", | |
27 | "CQUERYU", | |
28 | "4", | |
29 | "5", | |
30 | "6", | |
31 | "7", | |
32 | "8", | |
0d22afd1 RC |
33 | "UPDATEA", |
34 | "UPDATED", | |
3e8361d9 | 35 | "UPDATEDA", |
0d22afd1 | 36 | "UPDATEM", |
3e8361d9 | 37 | "UPDATEMA", |
0d22afd1 RC |
38 | "ZONEINIT", |
39 | "ZONEREF", | |
40 | }; | |
41 | ||
cd43bd6a | 42 | char *_res_resultcodes[] = { |
0d22afd1 RC |
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 | 87 | fprintf(file,"HEADER:\n"); |
1e12917d | 88 | fprintf(file,"\topcode = %s", _opcodes[hp->opcode]); |
a73d974c | 89 | fprintf(file,", id = %d", ntohs(hp->id)); |
1e12917d | 90 | fprintf(file,", rcode = %s\n", _rcodes[hp->rcode]); |
a73d974c | 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; | |
20087cad | 118 | fprintf(file,", type = %s", p_type(_getshort(cp))); |
0d22afd1 | 119 | cp += sizeof(u_short); |
20087cad | 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 */ |
20087cad | 198 | fprintf(file,"\n\ttype = %s", p_type(type = _getshort(cp))); |
0d22afd1 | 199 | cp += sizeof(u_short); |
20087cad | 200 | fprintf(file,", class = %s", p_class(class = _getshort(cp))); |
0d22afd1 | 201 | cp += sizeof(u_short); |
20087cad | 202 | fprintf(file,", ttl = %u", _getlong(cp)); |
0d22afd1 | 203 | cp += sizeof(u_long); |
20087cad | 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; | |
e0dd8906 KD |
228 | default: |
229 | cp += dlen; | |
0d22afd1 RC |
230 | } |
231 | break; | |
232 | case T_CNAME: | |
233 | case T_MB: | |
018df4a9 | 234 | #ifdef OLDRR |
0d22afd1 RC |
235 | case T_MD: |
236 | case T_MF: | |
018df4a9 | 237 | #endif /* OLDRR */ |
0d22afd1 RC |
238 | case T_MG: |
239 | case T_MR: | |
240 | case T_NS: | |
241 | case T_PTR: | |
a73d974c KD |
242 | fprintf(file,"\tdomain name = "); |
243 | cp = p_cdname(cp, msg, file); | |
244 | fprintf(file,"\n"); | |
0d22afd1 RC |
245 | break; |
246 | ||
247 | case T_HINFO: | |
248 | if (n = *cp++) { | |
a73d974c | 249 | fprintf(file,"\tCPU=%.*s\n", n, cp); |
0d22afd1 RC |
250 | cp += n; |
251 | } | |
252 | if (n = *cp++) { | |
a73d974c | 253 | fprintf(file,"\tOS=%.*s\n", n, cp); |
0d22afd1 RC |
254 | cp += n; |
255 | } | |
256 | break; | |
257 | ||
258 | case T_SOA: | |
a73d974c KD |
259 | fprintf(file,"\torigin = "); |
260 | cp = p_cdname(cp, msg, file); | |
261 | fprintf(file,"\n\tmail addr = "); | |
262 | cp = p_cdname(cp, msg, file); | |
20087cad | 263 | fprintf(file,"\n\tserial=%ld", _getlong(cp)); |
0d22afd1 | 264 | cp += sizeof(u_long); |
20087cad | 265 | fprintf(file,", refresh=%ld", _getlong(cp)); |
0d22afd1 | 266 | cp += sizeof(u_long); |
20087cad | 267 | fprintf(file,", retry=%ld", _getlong(cp)); |
0d22afd1 | 268 | cp += sizeof(u_long); |
20087cad | 269 | fprintf(file,", expire=%ld", _getlong(cp)); |
0d22afd1 | 270 | cp += sizeof(u_long); |
20087cad | 271 | fprintf(file,", min=%ld\n", _getlong(cp)); |
0d22afd1 RC |
272 | cp += sizeof(u_long); |
273 | break; | |
274 | ||
73546a32 | 275 | case T_MX: |
20087cad | 276 | fprintf(file,"\tpreference = %ld,",_getshort(cp)); |
018df4a9 KD |
277 | cp += sizeof(u_short); |
278 | fprintf(file," name = "); | |
73546a32 | 279 | cp = p_cdname(cp, msg, file); |
73546a32 KD |
280 | break; |
281 | ||
e515a559 | 282 | case T_MINFO: |
a73d974c KD |
283 | fprintf(file,"\trequests = "); |
284 | cp = p_cdname(cp, msg, file); | |
285 | fprintf(file,"\n\terrors = "); | |
286 | cp = p_cdname(cp, msg, file); | |
e515a559 RC |
287 | break; |
288 | ||
0d22afd1 | 289 | case T_UINFO: |
a73d974c | 290 | fprintf(file,"\t%s\n", cp); |
0d22afd1 RC |
291 | cp += dlen; |
292 | break; | |
293 | ||
294 | case T_UID: | |
295 | case T_GID: | |
296 | if (dlen == 4) { | |
20087cad | 297 | fprintf(file,"\t%ld\n", _getlong(cp)); |
0d22afd1 RC |
298 | cp += sizeof(int); |
299 | } | |
300 | break; | |
301 | ||
302 | case T_WKS: | |
303 | if (dlen < sizeof(u_long) + 1) | |
304 | break; | |
11e57e73 | 305 | bcopy(cp, (char *)&inaddr, sizeof(inaddr)); |
0d22afd1 | 306 | cp += sizeof(u_long); |
a73d974c | 307 | fprintf(file,"\tinternet address = %s, protocol = %d\n\t", |
0d22afd1 RC |
308 | inet_ntoa(inaddr), *cp++); |
309 | n = 0; | |
310 | while (cp < cp1 + dlen) { | |
311 | c = *cp++; | |
312 | do { | |
a943feed | 313 | if (c & 0200) |
a73d974c | 314 | fprintf(file," %d", n); |
a943feed | 315 | c <<= 1; |
0d22afd1 RC |
316 | } while (++n & 07); |
317 | } | |
a73d974c | 318 | putc('\n',file); |
0d22afd1 RC |
319 | break; |
320 | ||
3bf25746 | 321 | #ifdef ALLOW_T_UNSPEC |
1e12917d KB |
322 | case T_UNSPEC: |
323 | { | |
324 | int NumBytes = 8; | |
325 | char *DataPtr; | |
326 | int i; | |
3bf25746 | 327 | |
1e12917d KB |
328 | if (dlen < NumBytes) NumBytes = dlen; |
329 | fprintf(file, "\tFirst %d bytes of hex data:", | |
330 | NumBytes); | |
331 | for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++) | |
332 | fprintf(file, " %x", *DataPtr); | |
333 | fputs("\n", file); | |
334 | cp += dlen; | |
335 | } | |
336 | break; | |
337 | #endif /* ALLOW_T_UNSPEC */ | |
3bf25746 | 338 | |
0d22afd1 | 339 | default: |
a73d974c | 340 | fprintf(file,"\t???\n"); |
0d22afd1 RC |
341 | cp += dlen; |
342 | } | |
343 | if (cp != cp1 + dlen) | |
a73d974c KD |
344 | fprintf(file,"packet size error (%#x != %#x)\n", cp, cp1+dlen); |
345 | fprintf(file,"\n"); | |
0d22afd1 | 346 | return (cp); |
d1c1ab68 | 347 | #endif |
0d22afd1 RC |
348 | } |
349 | ||
350 | static char nbuf[20]; | |
351 | extern char *sprintf(); | |
352 | ||
353 | /* | |
354 | * Return a string for the type | |
355 | */ | |
356 | char * | |
357 | p_type(type) | |
358 | int type; | |
359 | { | |
0d22afd1 RC |
360 | switch (type) { |
361 | case T_A: | |
362 | return("A"); | |
363 | case T_NS: /* authoritative server */ | |
364 | return("NS"); | |
018df4a9 | 365 | #ifdef OLDRR |
0d22afd1 RC |
366 | case T_MD: /* mail destination */ |
367 | return("MD"); | |
368 | case T_MF: /* mail forwarder */ | |
369 | return("MF"); | |
018df4a9 | 370 | #endif /* OLDRR */ |
0d22afd1 RC |
371 | case T_CNAME: /* connonical name */ |
372 | return("CNAME"); | |
373 | case T_SOA: /* start of authority zone */ | |
374 | return("SOA"); | |
375 | case T_MB: /* mailbox domain name */ | |
376 | return("MB"); | |
377 | case T_MG: /* mail group member */ | |
378 | return("MG"); | |
73546a32 KD |
379 | case T_MX: /* mail routing info */ |
380 | return("MX"); | |
0d22afd1 RC |
381 | case T_MR: /* mail rename name */ |
382 | return("MR"); | |
383 | case T_NULL: /* null resource record */ | |
384 | return("NULL"); | |
385 | case T_WKS: /* well known service */ | |
386 | return("WKS"); | |
387 | case T_PTR: /* domain name pointer */ | |
388 | return("PTR"); | |
389 | case T_HINFO: /* host information */ | |
390 | return("HINFO"); | |
391 | case T_MINFO: /* mailbox information */ | |
392 | return("MINFO"); | |
393 | case T_AXFR: /* zone transfer */ | |
394 | return("AXFR"); | |
395 | case T_MAILB: /* mail box */ | |
396 | return("MAILB"); | |
397 | case T_MAILA: /* mail address */ | |
398 | return("MAILA"); | |
399 | case T_ANY: /* matches any type */ | |
400 | return("ANY"); | |
401 | case T_UINFO: | |
402 | return("UINFO"); | |
403 | case T_UID: | |
404 | return("UID"); | |
405 | case T_GID: | |
406 | return("GID"); | |
3bf25746 | 407 | #ifdef ALLOW_T_UNSPEC |
1e12917d KB |
408 | case T_UNSPEC: |
409 | return("UNSPEC"); | |
410 | #endif /* ALLOW_T_UNSPEC */ | |
0d22afd1 RC |
411 | default: |
412 | return (sprintf(nbuf, "%d", type)); | |
413 | } | |
414 | } | |
415 | ||
416 | /* | |
417 | * Return a mnemonic for class | |
418 | */ | |
419 | char * | |
420 | p_class(class) | |
421 | int class; | |
422 | { | |
423 | ||
424 | switch (class) { | |
425 | case C_IN: /* internet class */ | |
426 | return("IN"); | |
0d22afd1 RC |
427 | case C_ANY: /* matches any class */ |
428 | return("ANY"); | |
429 | default: | |
430 | return (sprintf(nbuf, "%d", class)); | |
431 | } | |
432 | } |