Commit | Line | Data |
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b423e985 | 1 | /* |
8ea4199d | 2 | * Copyright (c) 1985 Regents of the University of California. |
6b2f9dd0 KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
f4f66d2c KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
b423e985 RC |
16 | */ |
17 | ||
2ce81398 | 18 | #if defined(LIBC_SCCS) && !defined(lint) |
606dc84e | 19 | static char sccsid[] = "@(#)res_debug.c 5.25 (Berkeley) %G%"; |
6b2f9dd0 | 20 | #endif /* LIBC_SCCS and not lint */ |
8ea4199d | 21 | |
0d22afd1 RC |
22 | #include <sys/types.h> |
23 | #include <netinet/in.h> | |
24 | #include <stdio.h> | |
02a51825 | 25 | #include <arpa/nameser.h> |
0d22afd1 | 26 | |
7134abf2 | 27 | extern char *p_cdname(), *p_rr(), *p_type(), *p_class(), *p_time(); |
0d22afd1 RC |
28 | extern char *inet_ntoa(); |
29 | ||
cd43bd6a | 30 | char *_res_opcodes[] = { |
0d22afd1 RC |
31 | "QUERY", |
32 | "IQUERY", | |
33 | "CQUERYM", | |
34 | "CQUERYU", | |
35 | "4", | |
36 | "5", | |
37 | "6", | |
38 | "7", | |
39 | "8", | |
0d22afd1 RC |
40 | "UPDATEA", |
41 | "UPDATED", | |
3e8361d9 | 42 | "UPDATEDA", |
0d22afd1 | 43 | "UPDATEM", |
3e8361d9 | 44 | "UPDATEMA", |
0d22afd1 RC |
45 | "ZONEINIT", |
46 | "ZONEREF", | |
47 | }; | |
48 | ||
cd43bd6a | 49 | char *_res_resultcodes[] = { |
0d22afd1 RC |
50 | "NOERROR", |
51 | "FORMERR", | |
52 | "SERVFAIL", | |
53 | "NXDOMAIN", | |
54 | "NOTIMP", | |
55 | "REFUSED", | |
56 | "6", | |
57 | "7", | |
58 | "8", | |
59 | "9", | |
60 | "10", | |
61 | "11", | |
62 | "12", | |
63 | "13", | |
64 | "14", | |
65 | "NOCHANGE", | |
66 | }; | |
67 | ||
a73d974c KD |
68 | p_query(msg) |
69 | char *msg; | |
70 | { | |
71 | fp_query(msg,stdout); | |
72 | } | |
73 | ||
0d22afd1 RC |
74 | /* |
75 | * Print the contents of a query. | |
76 | * This is intended to be primarily a debugging routine. | |
77 | */ | |
a73d974c | 78 | fp_query(msg,file) |
e515a559 | 79 | char *msg; |
a73d974c | 80 | FILE *file; |
0d22afd1 RC |
81 | { |
82 | register char *cp; | |
83 | register HEADER *hp; | |
84 | register int n; | |
85 | ||
86 | /* | |
87 | * Print header fields. | |
88 | */ | |
e515a559 RC |
89 | hp = (HEADER *)msg; |
90 | cp = msg + sizeof(HEADER); | |
a73d974c | 91 | fprintf(file,"HEADER:\n"); |
d7070d01 | 92 | fprintf(file,"\topcode = %s", _res_opcodes[hp->opcode]); |
a73d974c | 93 | fprintf(file,", id = %d", ntohs(hp->id)); |
d7070d01 | 94 | fprintf(file,", rcode = %s\n", _res_resultcodes[hp->rcode]); |
a73d974c | 95 | fprintf(file,"\theader flags: "); |
0d22afd1 | 96 | if (hp->qr) |
a73d974c | 97 | fprintf(file," qr"); |
0d22afd1 | 98 | if (hp->aa) |
a73d974c | 99 | fprintf(file," aa"); |
0d22afd1 | 100 | if (hp->tc) |
a73d974c | 101 | fprintf(file," tc"); |
0d22afd1 | 102 | if (hp->rd) |
a73d974c | 103 | fprintf(file," rd"); |
0d22afd1 | 104 | if (hp->ra) |
a73d974c | 105 | fprintf(file," ra"); |
0d22afd1 | 106 | if (hp->pr) |
a73d974c KD |
107 | fprintf(file," pr"); |
108 | fprintf(file,"\n\tqdcount = %d", ntohs(hp->qdcount)); | |
109 | fprintf(file,", ancount = %d", ntohs(hp->ancount)); | |
110 | fprintf(file,", nscount = %d", ntohs(hp->nscount)); | |
111 | fprintf(file,", arcount = %d\n\n", ntohs(hp->arcount)); | |
0d22afd1 RC |
112 | /* |
113 | * Print question records. | |
114 | */ | |
115 | if (n = ntohs(hp->qdcount)) { | |
a73d974c | 116 | fprintf(file,"QUESTIONS:\n"); |
0d22afd1 | 117 | while (--n >= 0) { |
a73d974c KD |
118 | fprintf(file,"\t"); |
119 | cp = p_cdname(cp, msg, file); | |
0d22afd1 RC |
120 | if (cp == NULL) |
121 | return; | |
20087cad | 122 | fprintf(file,", type = %s", p_type(_getshort(cp))); |
0d22afd1 | 123 | cp += sizeof(u_short); |
20087cad | 124 | fprintf(file,", class = %s\n\n", p_class(_getshort(cp))); |
0d22afd1 RC |
125 | cp += sizeof(u_short); |
126 | } | |
127 | } | |
128 | /* | |
129 | * Print authoritative answer records | |
130 | */ | |
131 | if (n = ntohs(hp->ancount)) { | |
a73d974c | 132 | fprintf(file,"ANSWERS:\n"); |
0d22afd1 | 133 | while (--n >= 0) { |
a73d974c KD |
134 | fprintf(file,"\t"); |
135 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
136 | if (cp == NULL) |
137 | return; | |
138 | } | |
139 | } | |
140 | /* | |
141 | * print name server records | |
142 | */ | |
143 | if (n = ntohs(hp->nscount)) { | |
a73d974c | 144 | fprintf(file,"NAME SERVERS:\n"); |
0d22afd1 | 145 | while (--n >= 0) { |
a73d974c KD |
146 | fprintf(file,"\t"); |
147 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
148 | if (cp == NULL) |
149 | return; | |
150 | } | |
151 | } | |
152 | /* | |
153 | * print additional records | |
154 | */ | |
155 | if (n = ntohs(hp->arcount)) { | |
a73d974c | 156 | fprintf(file,"ADDITIONAL RECORDS:\n"); |
0d22afd1 | 157 | while (--n >= 0) { |
a73d974c KD |
158 | fprintf(file,"\t"); |
159 | cp = p_rr(cp, msg, file); | |
0d22afd1 RC |
160 | if (cp == NULL) |
161 | return; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | char * | |
a73d974c | 167 | p_cdname(cp, msg, file) |
e515a559 | 168 | char *cp, *msg; |
a73d974c | 169 | FILE *file; |
0d22afd1 RC |
170 | { |
171 | char name[MAXDNAME]; | |
172 | int n; | |
173 | ||
127b68cb | 174 | if ((n = dn_expand(msg, msg + 512, cp, name, sizeof(name))) < 0) |
0d22afd1 RC |
175 | return (NULL); |
176 | if (name[0] == '\0') { | |
177 | name[0] = '.'; | |
178 | name[1] = '\0'; | |
179 | } | |
a73d974c | 180 | fputs(name, file); |
0d22afd1 RC |
181 | return (cp + n); |
182 | } | |
183 | ||
184 | /* | |
185 | * Print resource record fields in human readable form. | |
186 | */ | |
187 | char * | |
a73d974c | 188 | p_rr(cp, msg, file) |
e515a559 | 189 | char *cp, *msg; |
a73d974c | 190 | FILE *file; |
0d22afd1 RC |
191 | { |
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); |
606dc84e | 202 | fprintf(file,", ttl = %s", p_time(_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: | |
0d22afd1 RC |
234 | case T_MG: |
235 | case T_MR: | |
236 | case T_NS: | |
237 | case T_PTR: | |
a73d974c KD |
238 | fprintf(file,"\tdomain name = "); |
239 | cp = p_cdname(cp, msg, file); | |
240 | fprintf(file,"\n"); | |
0d22afd1 RC |
241 | break; |
242 | ||
243 | case T_HINFO: | |
244 | if (n = *cp++) { | |
a73d974c | 245 | fprintf(file,"\tCPU=%.*s\n", n, cp); |
0d22afd1 RC |
246 | cp += n; |
247 | } | |
248 | if (n = *cp++) { | |
a73d974c | 249 | fprintf(file,"\tOS=%.*s\n", n, cp); |
0d22afd1 RC |
250 | cp += n; |
251 | } | |
252 | break; | |
253 | ||
254 | case T_SOA: | |
a73d974c KD |
255 | fprintf(file,"\torigin = "); |
256 | cp = p_cdname(cp, msg, file); | |
257 | fprintf(file,"\n\tmail addr = "); | |
258 | cp = p_cdname(cp, msg, file); | |
606dc84e | 259 | fprintf(file,"\n\tserial = %ld", _getlong(cp)); |
0d22afd1 | 260 | cp += sizeof(u_long); |
606dc84e | 261 | fprintf(file,"\n\trefresh = %s", p_time(_getlong(cp))); |
0d22afd1 | 262 | cp += sizeof(u_long); |
606dc84e | 263 | fprintf(file,"\n\tretry = %s", p_time(_getlong(cp))); |
0d22afd1 | 264 | cp += sizeof(u_long); |
606dc84e | 265 | fprintf(file,"\n\texpire = %s", p_time(_getlong(cp))); |
0d22afd1 | 266 | cp += sizeof(u_long); |
606dc84e | 267 | fprintf(file,"\n\tmin = %s\n", p_time(_getlong(cp))); |
0d22afd1 RC |
268 | cp += sizeof(u_long); |
269 | break; | |
270 | ||
73546a32 | 271 | case T_MX: |
20087cad | 272 | fprintf(file,"\tpreference = %ld,",_getshort(cp)); |
018df4a9 KD |
273 | cp += sizeof(u_short); |
274 | fprintf(file," name = "); | |
73546a32 | 275 | cp = p_cdname(cp, msg, file); |
73546a32 KD |
276 | break; |
277 | ||
e515a559 | 278 | case T_MINFO: |
a73d974c KD |
279 | fprintf(file,"\trequests = "); |
280 | cp = p_cdname(cp, msg, file); | |
281 | fprintf(file,"\n\terrors = "); | |
282 | cp = p_cdname(cp, msg, file); | |
e515a559 RC |
283 | break; |
284 | ||
0d22afd1 | 285 | case T_UINFO: |
606dc84e | 286 | case T_TXT: |
a73d974c | 287 | fprintf(file,"\t%s\n", cp); |
0d22afd1 RC |
288 | cp += dlen; |
289 | break; | |
290 | ||
291 | case T_UID: | |
292 | case T_GID: | |
293 | if (dlen == 4) { | |
20087cad | 294 | fprintf(file,"\t%ld\n", _getlong(cp)); |
0d22afd1 RC |
295 | cp += sizeof(int); |
296 | } | |
297 | break; | |
298 | ||
299 | case T_WKS: | |
300 | if (dlen < sizeof(u_long) + 1) | |
301 | break; | |
11e57e73 | 302 | bcopy(cp, (char *)&inaddr, sizeof(inaddr)); |
0d22afd1 | 303 | cp += sizeof(u_long); |
a73d974c | 304 | fprintf(file,"\tinternet address = %s, protocol = %d\n\t", |
0d22afd1 RC |
305 | inet_ntoa(inaddr), *cp++); |
306 | n = 0; | |
307 | while (cp < cp1 + dlen) { | |
308 | c = *cp++; | |
309 | do { | |
a943feed | 310 | if (c & 0200) |
a73d974c | 311 | fprintf(file," %d", n); |
a943feed | 312 | c <<= 1; |
0d22afd1 RC |
313 | } while (++n & 07); |
314 | } | |
a73d974c | 315 | putc('\n',file); |
0d22afd1 RC |
316 | break; |
317 | ||
3bf25746 | 318 | #ifdef ALLOW_T_UNSPEC |
1e12917d KB |
319 | case T_UNSPEC: |
320 | { | |
321 | int NumBytes = 8; | |
322 | char *DataPtr; | |
323 | int i; | |
3bf25746 | 324 | |
1e12917d KB |
325 | if (dlen < NumBytes) NumBytes = dlen; |
326 | fprintf(file, "\tFirst %d bytes of hex data:", | |
327 | NumBytes); | |
328 | for (i = 0, DataPtr = cp; i < NumBytes; i++, DataPtr++) | |
329 | fprintf(file, " %x", *DataPtr); | |
330 | fputs("\n", file); | |
331 | cp += dlen; | |
332 | } | |
333 | break; | |
334 | #endif /* ALLOW_T_UNSPEC */ | |
3bf25746 | 335 | |
0d22afd1 | 336 | default: |
a73d974c | 337 | fprintf(file,"\t???\n"); |
0d22afd1 RC |
338 | cp += dlen; |
339 | } | |
340 | if (cp != cp1 + dlen) | |
a73d974c KD |
341 | fprintf(file,"packet size error (%#x != %#x)\n", cp, cp1+dlen); |
342 | fprintf(file,"\n"); | |
0d22afd1 RC |
343 | return (cp); |
344 | } | |
345 | ||
7134abf2 | 346 | static char nbuf[40]; |
0d22afd1 RC |
347 | |
348 | /* | |
349 | * Return a string for the type | |
350 | */ | |
351 | char * | |
352 | p_type(type) | |
353 | int type; | |
354 | { | |
0d22afd1 RC |
355 | switch (type) { |
356 | case T_A: | |
357 | return("A"); | |
358 | case T_NS: /* authoritative server */ | |
359 | return("NS"); | |
0d22afd1 RC |
360 | case T_CNAME: /* connonical name */ |
361 | return("CNAME"); | |
362 | case T_SOA: /* start of authority zone */ | |
363 | return("SOA"); | |
364 | case T_MB: /* mailbox domain name */ | |
365 | return("MB"); | |
366 | case T_MG: /* mail group member */ | |
367 | return("MG"); | |
368 | case T_MR: /* mail rename name */ | |
369 | return("MR"); | |
370 | case T_NULL: /* null resource record */ | |
371 | return("NULL"); | |
372 | case T_WKS: /* well known service */ | |
373 | return("WKS"); | |
374 | case T_PTR: /* domain name pointer */ | |
375 | return("PTR"); | |
376 | case T_HINFO: /* host information */ | |
377 | return("HINFO"); | |
378 | case T_MINFO: /* mailbox information */ | |
379 | return("MINFO"); | |
606dc84e JB |
380 | case T_MX: /* mail routing info */ |
381 | return("MX"); | |
382 | case T_TXT: /* text */ | |
383 | return("TXT"); | |
0d22afd1 RC |
384 | case T_AXFR: /* zone transfer */ |
385 | return("AXFR"); | |
386 | case T_MAILB: /* mail box */ | |
387 | return("MAILB"); | |
388 | case T_MAILA: /* mail address */ | |
389 | return("MAILA"); | |
390 | case T_ANY: /* matches any type */ | |
391 | return("ANY"); | |
392 | case T_UINFO: | |
393 | return("UINFO"); | |
394 | case T_UID: | |
395 | return("UID"); | |
396 | case T_GID: | |
397 | return("GID"); | |
3bf25746 | 398 | #ifdef ALLOW_T_UNSPEC |
1e12917d KB |
399 | case T_UNSPEC: |
400 | return("UNSPEC"); | |
401 | #endif /* ALLOW_T_UNSPEC */ | |
0d22afd1 | 402 | default: |
06eef7c4 KB |
403 | (void)sprintf(nbuf, "%d", type); |
404 | return(nbuf); | |
0d22afd1 RC |
405 | } |
406 | } | |
407 | ||
408 | /* | |
409 | * Return a mnemonic for class | |
410 | */ | |
411 | char * | |
412 | p_class(class) | |
413 | int class; | |
414 | { | |
415 | ||
416 | switch (class) { | |
417 | case C_IN: /* internet class */ | |
418 | return("IN"); | |
606dc84e JB |
419 | case C_HS: /* internet class */ |
420 | return("HESIOD"); | |
0d22afd1 RC |
421 | case C_ANY: /* matches any class */ |
422 | return("ANY"); | |
423 | default: | |
06eef7c4 KB |
424 | (void)sprintf(nbuf, "%d", class); |
425 | return(nbuf); | |
0d22afd1 RC |
426 | } |
427 | } | |
7134abf2 MK |
428 | |
429 | /* | |
430 | * Return a mnemonic for a time to live | |
431 | */ | |
432 | char | |
433 | *p_time(value) | |
434 | u_long value; | |
435 | { | |
436 | int secs, mins, hours; | |
437 | register char *p; | |
438 | ||
439 | secs = value % 60; | |
440 | value /= 60; | |
441 | mins = value % 60; | |
442 | value /= 60; | |
443 | hours = value % 24; | |
444 | value /= 24; | |
445 | ||
446 | #define PLURALIZE(x) x, (x == 1) ? "" : "s" | |
447 | p = nbuf; | |
448 | if (value) { | |
449 | (void)sprintf(p, "%d day%s", PLURALIZE(value)); | |
450 | while (*++p); | |
451 | } | |
452 | if (hours) { | |
453 | if (p != nbuf) | |
454 | *p++ = ' '; | |
455 | (void)sprintf(p, "%d hour%s", PLURALIZE(hours)); | |
456 | while (*++p); | |
457 | } | |
458 | if (mins) { | |
459 | if (p != nbuf) | |
460 | *p++ = ' '; | |
461 | (void)sprintf(p, "%d min%s", PLURALIZE(mins)); | |
462 | while (*++p); | |
463 | } | |
464 | if (secs) { | |
465 | if (p != nbuf) | |
466 | *p++ = ' '; | |
467 | (void)sprintf(p, "%d sec%s", PLURALIZE(secs)); | |
468 | while (*++p); | |
469 | } | |
470 | return(nbuf); | |
471 | } |