]>
Commit | Line | Data |
---|---|---|
28f540f4 | 1 | /* |
b43b13ac | 2 | * Copyright (c) 1985 |
28f540f4 | 3 | * The Regents of the University of California. All rights reserved. |
0a463fa9 | 4 | * |
28f540f4 RM |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
28f540f4 RM |
13 | * 4. Neither the name of the University nor the names of its contributors |
14 | * may be used to endorse or promote products derived from this software | |
15 | * without specific prior written permission. | |
0a463fa9 | 16 | * |
28f540f4 RM |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
b43b13ac UD |
28 | */ |
29 | ||
30 | /* | |
28f540f4 | 31 | * Portions Copyright (c) 1993 by Digital Equipment Corporation. |
0a463fa9 | 32 | * |
28f540f4 RM |
33 | * Permission to use, copy, modify, and distribute this software for any |
34 | * purpose with or without fee is hereby granted, provided that the above | |
35 | * copyright notice and this permission notice appear in all copies, and that | |
36 | * the name of Digital Equipment Corporation not be used in advertising or | |
37 | * publicity pertaining to distribution of the document or software without | |
38 | * specific, written prior permission. | |
0a463fa9 | 39 | * |
28f540f4 RM |
40 | * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL |
41 | * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES | |
42 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT | |
43 | * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
44 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR | |
45 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
46 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
47 | * SOFTWARE. | |
b43b13ac UD |
48 | */ |
49 | ||
50 | /* | |
df21c858 UD |
51 | * Portions Copyright (c) 1995 by International Business Machines, Inc. |
52 | * | |
53 | * International Business Machines, Inc. (hereinafter called IBM) grants | |
54 | * permission under its copyrights to use, copy, modify, and distribute this | |
55 | * Software with or without fee, provided that the above copyright notice and | |
56 | * all paragraphs of this notice appear in all copies, and that the name of IBM | |
57 | * not be used in connection with the marketing of any product incorporating | |
58 | * the Software or modifications thereof, without specific, written prior | |
59 | * permission. | |
60 | * | |
61 | * To the extent it has a right to do so, IBM grants an immunity from suit | |
62 | * under its patents, if any, for the use, sale or manufacture of products to | |
63 | * the extent that such products are used for performing Domain Name System | |
64 | * dynamic updates in TCP/IP networks by means of the Software. No immunity is | |
65 | * granted for any product per se or for any other function of any product. | |
66 | * | |
67 | * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, | |
68 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
69 | * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, | |
70 | * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING | |
71 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN | |
72 | * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
b43b13ac UD |
73 | */ |
74 | ||
75 | /* | |
76 | * Portions Copyright (c) 1996-1999 by Internet Software Consortium. | |
77 | * | |
78 | * Permission to use, copy, modify, and distribute this software for any | |
79 | * purpose with or without fee is hereby granted, provided that the above | |
80 | * copyright notice and this permission notice appear in all copies. | |
81 | * | |
82 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS | |
83 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES | |
84 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE | |
85 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
86 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR | |
87 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
88 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
89 | * SOFTWARE. | |
28f540f4 RM |
90 | */ |
91 | ||
fa0bc87c | 92 | #include <sys/types.h> |
b43b13ac | 93 | #include <sys/param.h> |
fa0bc87c | 94 | #include <sys/socket.h> |
b43b13ac | 95 | |
28f540f4 RM |
96 | #include <netinet/in.h> |
97 | #include <arpa/inet.h> | |
98 | #include <arpa/nameser.h> | |
99 | ||
58e07151 | 100 | #include <ctype.h> |
b43b13ac UD |
101 | #include <errno.h> |
102 | #include <math.h> | |
3d61b63c | 103 | #include <netdb.h> |
28f540f4 | 104 | #include <resolv.h> |
df21c858 | 105 | #include <stdio.h> |
b43b13ac UD |
106 | #include <stdlib.h> |
107 | #include <string.h> | |
df21c858 UD |
108 | #include <time.h> |
109 | ||
b43b13ac UD |
110 | #ifdef SPRINTF_CHAR |
111 | # define SPRINTF(x) strlen(sprintf/**/x) | |
28f540f4 | 112 | #else |
b43b13ac | 113 | # define SPRINTF(x) sprintf x |
28f540f4 RM |
114 | #endif |
115 | ||
6f9d8e68 | 116 | extern const char *_res_sectioncodes[] attribute_hidden; |
28f540f4 | 117 | |
b43b13ac UD |
118 | /* |
119 | * Print the current options. | |
120 | */ | |
121 | void | |
122 | fp_resstat(const res_state statp, FILE *file) { | |
123 | u_long mask; | |
28f540f4 | 124 | |
b43b13ac UD |
125 | fprintf(file, ";; res options:"); |
126 | for (mask = 1; mask != 0; mask <<= 1) | |
127 | if (statp->options & mask) | |
128 | fprintf(file, " %s", p_option(mask)); | |
129 | putc('\n', file); | |
28f540f4 RM |
130 | } |
131 | ||
b43b13ac UD |
132 | static void |
133 | do_section(const res_state statp, | |
134 | ns_msg *handle, ns_sect section, | |
135 | int pflag, FILE *file) | |
28f540f4 | 136 | { |
b43b13ac | 137 | int n, sflag, rrnum; |
e685e07d UD |
138 | static int buflen = 2048; |
139 | char *buf; | |
b43b13ac UD |
140 | ns_opcode opcode; |
141 | ns_rr rr; | |
28f540f4 RM |
142 | |
143 | /* | |
144 | * Print answer records. | |
145 | */ | |
b43b13ac UD |
146 | sflag = (statp->pfcode & pflag); |
147 | if (statp->pfcode && !sflag) | |
148 | return; | |
149 | ||
e685e07d UD |
150 | buf = malloc(buflen); |
151 | if (buf == NULL) { | |
152 | fprintf(file, ";; memory allocation failure\n"); | |
153 | return; | |
154 | } | |
155 | ||
b43b13ac UD |
156 | opcode = (ns_opcode) ns_msg_getflag(*handle, ns_f_opcode); |
157 | rrnum = 0; | |
158 | for (;;) { | |
159 | if (ns_parserr(handle, section, rrnum, &rr)) { | |
160 | if (errno != ENODEV) | |
161 | fprintf(file, ";; ns_parserr: %s\n", | |
162 | strerror(errno)); | |
163 | else if (rrnum > 0 && sflag != 0 && | |
164 | (statp->pfcode & RES_PRF_HEAD1)) | |
165 | putc('\n', file); | |
e685e07d | 166 | goto cleanup; |
b43b13ac UD |
167 | } |
168 | if (rrnum == 0 && sflag != 0 && (statp->pfcode & RES_PRF_HEAD1)) | |
169 | fprintf(file, ";; %s SECTION:\n", | |
170 | p_section(section, opcode)); | |
171 | if (section == ns_s_qd) | |
172 | fprintf(file, ";;\t%s, type = %s, class = %s\n", | |
173 | ns_rr_name(rr), | |
174 | p_type(ns_rr_type(rr)), | |
175 | p_class(ns_rr_class(rr))); | |
176 | else { | |
177 | n = ns_sprintrr(handle, &rr, NULL, NULL, | |
e685e07d | 178 | buf, buflen); |
b43b13ac | 179 | if (n < 0) { |
e685e07d UD |
180 | if (errno == ENOSPC) { |
181 | free(buf); | |
182 | buf = NULL; | |
183 | if (buflen < 131072) | |
184 | buf = malloc(buflen += 1024); | |
185 | if (buf == NULL) { | |
186 | fprintf(file, | |
f87dfb1f | 187 | ";; memory allocation failure\n"); |
e685e07d UD |
188 | return; |
189 | } | |
190 | continue; | |
191 | } | |
b43b13ac UD |
192 | fprintf(file, ";; ns_sprintrr: %s\n", |
193 | strerror(errno)); | |
e685e07d | 194 | goto cleanup; |
28f540f4 | 195 | } |
b43b13ac UD |
196 | fputs(buf, file); |
197 | fputc('\n', file); | |
28f540f4 | 198 | } |
b43b13ac | 199 | rrnum++; |
28f540f4 | 200 | } |
e685e07d | 201 | cleanup: |
72e6cdfa | 202 | free(buf); |
28f540f4 RM |
203 | } |
204 | ||
205 | /* | |
206 | * Print the contents of a query. | |
207 | * This is intended to be primarily a debugging routine. | |
208 | */ | |
209 | void | |
b43b13ac UD |
210 | res_pquery(const res_state statp, const u_char *msg, int len, FILE *file) { |
211 | ns_msg handle; | |
212 | int qdcount, ancount, nscount, arcount; | |
213 | u_int opcode, rcode, id; | |
28f540f4 | 214 | |
b43b13ac UD |
215 | if (ns_initparse(msg, len, &handle) < 0) { |
216 | fprintf(file, ";; ns_initparse: %s\n", strerror(errno)); | |
3d61b63c | 217 | return; |
b43b13ac UD |
218 | } |
219 | opcode = ns_msg_getflag(handle, ns_f_opcode); | |
220 | rcode = ns_msg_getflag(handle, ns_f_rcode); | |
221 | id = ns_msg_id(handle); | |
222 | qdcount = ns_msg_count(handle, ns_s_qd); | |
223 | ancount = ns_msg_count(handle, ns_s_an); | |
224 | nscount = ns_msg_count(handle, ns_s_ns); | |
225 | arcount = ns_msg_count(handle, ns_s_ar); | |
28f540f4 RM |
226 | |
227 | /* | |
228 | * Print header fields. | |
229 | */ | |
b43b13ac UD |
230 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX) || rcode) |
231 | fprintf(file, | |
232 | ";; ->>HEADER<<- opcode: %s, status: %s, id: %d\n", | |
233 | _res_opcodes[opcode], p_rcode(rcode), id); | |
234 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEADX)) | |
a2e1b046 | 235 | putc(';', file); |
b43b13ac | 236 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD2)) { |
28f540f4 | 237 | fprintf(file, "; flags:"); |
b43b13ac | 238 | if (ns_msg_getflag(handle, ns_f_qr)) |
28f540f4 | 239 | fprintf(file, " qr"); |
b43b13ac | 240 | if (ns_msg_getflag(handle, ns_f_aa)) |
28f540f4 | 241 | fprintf(file, " aa"); |
b43b13ac | 242 | if (ns_msg_getflag(handle, ns_f_tc)) |
28f540f4 | 243 | fprintf(file, " tc"); |
b43b13ac | 244 | if (ns_msg_getflag(handle, ns_f_rd)) |
28f540f4 | 245 | fprintf(file, " rd"); |
b43b13ac | 246 | if (ns_msg_getflag(handle, ns_f_ra)) |
28f540f4 | 247 | fprintf(file, " ra"); |
b43b13ac UD |
248 | if (ns_msg_getflag(handle, ns_f_z)) |
249 | fprintf(file, " ??"); | |
250 | if (ns_msg_getflag(handle, ns_f_ad)) | |
df21c858 | 251 | fprintf(file, " ad"); |
b43b13ac | 252 | if (ns_msg_getflag(handle, ns_f_cd)) |
df21c858 | 253 | fprintf(file, " cd"); |
28f540f4 | 254 | } |
b43b13ac UD |
255 | if ((!statp->pfcode) || (statp->pfcode & RES_PRF_HEAD1)) { |
256 | fprintf(file, "; %s: %d", | |
257 | p_section(ns_s_qd, opcode), qdcount); | |
258 | fprintf(file, ", %s: %d", | |
259 | p_section(ns_s_an, opcode), ancount); | |
260 | fprintf(file, ", %s: %d", | |
261 | p_section(ns_s_ns, opcode), nscount); | |
262 | fprintf(file, ", %s: %d", | |
263 | p_section(ns_s_ar, opcode), arcount); | |
28f540f4 | 264 | } |
0a463fa9 | 265 | if ((!statp->pfcode) || (statp->pfcode & |
28f540f4 RM |
266 | (RES_PRF_HEADX | RES_PRF_HEAD2 | RES_PRF_HEAD1))) { |
267 | putc('\n',file); | |
268 | } | |
269 | /* | |
b43b13ac | 270 | * Print the various sections. |
28f540f4 | 271 | */ |
b43b13ac UD |
272 | do_section(statp, &handle, ns_s_qd, RES_PRF_QUES, file); |
273 | do_section(statp, &handle, ns_s_an, RES_PRF_ANS, file); | |
274 | do_section(statp, &handle, ns_s_ns, RES_PRF_AUTH, file); | |
275 | do_section(statp, &handle, ns_s_ar, RES_PRF_ADD, file); | |
276 | if (qdcount == 0 && ancount == 0 && | |
277 | nscount == 0 && arcount == 0) | |
278 | putc('\n', file); | |
28f540f4 RM |
279 | } |
280 | ||
281 | const u_char * | |
b43b13ac | 282 | p_cdnname(const u_char *cp, const u_char *msg, int len, FILE *file) { |
28f540f4 RM |
283 | char name[MAXDNAME]; |
284 | int n; | |
285 | ||
286 | if ((n = dn_expand(msg, msg + len, cp, name, sizeof name)) < 0) | |
287 | return (NULL); | |
288 | if (name[0] == '\0') | |
289 | putc('.', file); | |
290 | else | |
291 | fputs(name, file); | |
292 | return (cp + n); | |
293 | } | |
6f9d8e68 | 294 | libresolv_hidden_def (p_cdnname) |
28f540f4 RM |
295 | |
296 | const u_char * | |
b43b13ac | 297 | p_cdname(const u_char *cp, const u_char *msg, FILE *file) { |
28f540f4 RM |
298 | return (p_cdnname(cp, msg, PACKETSZ, file)); |
299 | } | |
300 | ||
df21c858 UD |
301 | /* Return a fully-qualified domain name from a compressed name (with |
302 | length supplied). */ | |
303 | ||
304 | const u_char * | |
41075ae3 JM |
305 | p_fqnname (const u_char *cp, const u_char *msg, int msglen, char *name, |
306 | int namelen) | |
df21c858 UD |
307 | { |
308 | int n, newlen; | |
309 | ||
310 | if ((n = dn_expand(msg, cp + msglen, cp, name, namelen)) < 0) | |
311 | return (NULL); | |
b43b13ac | 312 | newlen = strlen(name); |
3121cc04 | 313 | if (newlen == 0 || name[newlen - 1] != '.') { |
b43b13ac | 314 | if (newlen + 1 >= namelen) /* Lack space for final dot */ |
df21c858 UD |
315 | return (NULL); |
316 | else | |
317 | strcpy(name + newlen, "."); | |
3121cc04 | 318 | } |
df21c858 UD |
319 | return (cp + n); |
320 | } | |
6f9d8e68 | 321 | libresolv_hidden_def (p_fqnname) |
df21c858 | 322 | |
b43b13ac | 323 | /* XXX: the rest of these functions need to become length-limited, too. */ |
28f540f4 RM |
324 | |
325 | const u_char * | |
b43b13ac | 326 | p_fqname(const u_char *cp, const u_char *msg, FILE *file) { |
28f540f4 | 327 | char name[MAXDNAME]; |
df21c858 | 328 | const u_char *n; |
28f540f4 | 329 | |
b43b13ac | 330 | n = p_fqnname(cp, msg, MAXCDNAME, name, sizeof name); |
df21c858 | 331 | if (n == NULL) |
28f540f4 | 332 | return (NULL); |
df21c858 UD |
333 | fputs(name, file); |
334 | return (n); | |
28f540f4 RM |
335 | } |
336 | ||
df21c858 UD |
337 | /* |
338 | * Names of RR classes and qclasses. Classes and qclasses are the same, except | |
339 | * that C_ANY is a qclass but not a class. (You can ask for records of class | |
340 | * C_ANY, but you can't have any records of that class in the database.) | |
341 | */ | |
32738a22 UD |
342 | extern const struct res_sym __p_class_syms[]; |
343 | libresolv_hidden_proto (__p_class_syms) | |
344 | const struct res_sym __p_class_syms[] = { | |
df21c858 UD |
345 | {C_IN, "IN"}, |
346 | {C_CHAOS, "CHAOS"}, | |
347 | {C_HS, "HS"}, | |
348 | {C_HS, "HESIOD"}, | |
349 | {C_ANY, "ANY"}, | |
b43b13ac | 350 | {C_NONE, "NONE"}, |
f87dfb1f | 351 | {C_IN, (char *)0} |
b43b13ac | 352 | }; |
32738a22 | 353 | libresolv_hidden_data_def (__p_class_syms) |
b43b13ac UD |
354 | |
355 | /* | |
356 | * Names of message sections. | |
357 | */ | |
6f9d8e68 | 358 | const struct res_sym __p_default_section_syms[] attribute_hidden = { |
b43b13ac UD |
359 | {ns_s_qd, "QUERY"}, |
360 | {ns_s_an, "ANSWER"}, | |
361 | {ns_s_ns, "AUTHORITY"}, | |
362 | {ns_s_ar, "ADDITIONAL"}, | |
363 | {0, (char *)0} | |
364 | }; | |
365 | ||
6f9d8e68 | 366 | const struct res_sym __p_update_section_syms[] attribute_hidden = { |
b43b13ac UD |
367 | {S_ZONE, "ZONE"}, |
368 | {S_PREREQ, "PREREQUISITE"}, | |
369 | {S_UPDATE, "UPDATE"}, | |
370 | {S_ADDT, "ADDITIONAL"}, | |
371 | {0, (char *)0} | |
372 | }; | |
373 | ||
df21c858 UD |
374 | /* |
375 | * Names of RR types and qtypes. Types and qtypes are the same, except | |
376 | * that T_ANY is a qtype but not a type. (You can ask for records of type | |
377 | * T_ANY, but you can't have any records of that type in the database.) | |
378 | */ | |
32738a22 UD |
379 | extern const struct res_sym __p_type_syms[]; |
380 | libresolv_hidden_proto (__p_type_syms) | |
381 | const struct res_sym __p_type_syms[] = { | |
b43b13ac UD |
382 | {ns_t_a, "A", "address"}, |
383 | {ns_t_ns, "NS", "name server"}, | |
384 | {ns_t_md, "MD", "mail destination (deprecated)"}, | |
385 | {ns_t_mf, "MF", "mail forwarder (deprecated)"}, | |
386 | {ns_t_cname, "CNAME", "canonical name"}, | |
387 | {ns_t_soa, "SOA", "start of authority"}, | |
388 | {ns_t_mb, "MB", "mailbox"}, | |
389 | {ns_t_mg, "MG", "mail group member"}, | |
390 | {ns_t_mr, "MR", "mail rename"}, | |
391 | {ns_t_null, "NULL", "null"}, | |
392 | {ns_t_wks, "WKS", "well-known service (deprecated)"}, | |
393 | {ns_t_ptr, "PTR", "domain name pointer"}, | |
394 | {ns_t_hinfo, "HINFO", "host information"}, | |
395 | {ns_t_minfo, "MINFO", "mailbox information"}, | |
396 | {ns_t_mx, "MX", "mail exchanger"}, | |
397 | {ns_t_txt, "TXT", "text"}, | |
398 | {ns_t_rp, "RP", "responsible person"}, | |
399 | {ns_t_afsdb, "AFSDB", "DCE or AFS server"}, | |
400 | {ns_t_x25, "X25", "X25 address"}, | |
401 | {ns_t_isdn, "ISDN", "ISDN address"}, | |
402 | {ns_t_rt, "RT", "router"}, | |
403 | {ns_t_nsap, "NSAP", "nsap address"}, | |
404 | {ns_t_nsap_ptr, "NSAP_PTR", "domain name pointer"}, | |
405 | {ns_t_sig, "SIG", "signature"}, | |
406 | {ns_t_key, "KEY", "key"}, | |
407 | {ns_t_px, "PX", "mapping information"}, | |
408 | {ns_t_gpos, "GPOS", "geographical position (withdrawn)"}, | |
409 | {ns_t_aaaa, "AAAA", "IPv6 address"}, | |
410 | {ns_t_loc, "LOC", "location"}, | |
411 | {ns_t_nxt, "NXT", "next valid name (unimplemented)"}, | |
412 | {ns_t_eid, "EID", "endpoint identifier (unimplemented)"}, | |
413 | {ns_t_nimloc, "NIMLOC", "NIMROD locator (unimplemented)"}, | |
414 | {ns_t_srv, "SRV", "server selection"}, | |
415 | {ns_t_atma, "ATMA", "ATM address (unimplemented)"}, | |
34ca2ff7 | 416 | {ns_t_dname, "DNAME", "Non-terminal DNAME (for IPv6)"}, |
b43b13ac UD |
417 | {ns_t_tsig, "TSIG", "transaction signature"}, |
418 | {ns_t_ixfr, "IXFR", "incremental zone transfer"}, | |
419 | {ns_t_axfr, "AXFR", "zone transfer"}, | |
420 | {ns_t_zxfr, "ZXFR", "compressed zone transfer"}, | |
421 | {ns_t_mailb, "MAILB", "mailbox-related data (deprecated)"}, | |
422 | {ns_t_maila, "MAILA", "mail agent (deprecated)"}, | |
423 | {ns_t_naptr, "NAPTR", "URN Naming Authority"}, | |
424 | {ns_t_kx, "KX", "Key Exchange"}, | |
425 | {ns_t_cert, "CERT", "Certificate"}, | |
426 | {ns_t_any, "ANY", "\"any\""}, | |
427 | {0, NULL, NULL} | |
428 | }; | |
32738a22 | 429 | libresolv_hidden_data_def (__p_type_syms) |
b43b13ac UD |
430 | |
431 | /* | |
432 | * Names of DNS rcodes. | |
433 | */ | |
6f9d8e68 | 434 | const struct res_sym __p_rcode_syms[] attribute_hidden = { |
b43b13ac UD |
435 | {ns_r_noerror, "NOERROR", "no error"}, |
436 | {ns_r_formerr, "FORMERR", "format error"}, | |
437 | {ns_r_servfail, "SERVFAIL", "server failed"}, | |
438 | {ns_r_nxdomain, "NXDOMAIN", "no such domain name"}, | |
439 | {ns_r_notimpl, "NOTIMP", "not implemented"}, | |
440 | {ns_r_refused, "REFUSED", "refused"}, | |
441 | {ns_r_yxdomain, "YXDOMAIN", "domain name exists"}, | |
442 | {ns_r_yxrrset, "YXRRSET", "rrset exists"}, | |
443 | {ns_r_nxrrset, "NXRRSET", "rrset doesn't exist"}, | |
444 | {ns_r_notauth, "NOTAUTH", "not authoritative"}, | |
445 | {ns_r_notzone, "NOTZONE", "Not in zone"}, | |
446 | {ns_r_max, "", ""}, | |
447 | {ns_r_badsig, "BADSIG", "bad signature"}, | |
448 | {ns_r_badkey, "BADKEY", "bad key"}, | |
449 | {ns_r_badtime, "BADTIME", "bad time"}, | |
450 | {0, NULL, NULL} | |
df21c858 UD |
451 | }; |
452 | ||
453 | int | |
b43b13ac UD |
454 | sym_ston(const struct res_sym *syms, const char *name, int *success) { |
455 | for ((void)NULL; syms->name != 0; syms++) { | |
df21c858 UD |
456 | if (strcasecmp (name, syms->name) == 0) { |
457 | if (success) | |
458 | *success = 1; | |
459 | return (syms->number); | |
460 | } | |
461 | } | |
462 | if (success) | |
463 | *success = 0; | |
b43b13ac | 464 | return (syms->number); /* The default value. */ |
df21c858 UD |
465 | } |
466 | ||
467 | const char * | |
b43b13ac | 468 | sym_ntos(const struct res_sym *syms, int number, int *success) { |
df21c858 UD |
469 | static char unname[20]; |
470 | ||
b43b13ac | 471 | for ((void)NULL; syms->name != 0; syms++) { |
e685e07d | 472 | if (number == syms->number) { |
df21c858 UD |
473 | if (success) |
474 | *success = 1; | |
475 | return (syms->name); | |
476 | } | |
477 | } | |
478 | ||
b43b13ac | 479 | sprintf(unname, "%d", number); /* XXX nonreentrant */ |
df21c858 UD |
480 | if (success) |
481 | *success = 0; | |
482 | return (unname); | |
483 | } | |
6f9d8e68 | 484 | libresolv_hidden_def (sym_ntos) |
df21c858 | 485 | |
df21c858 | 486 | const char * |
b43b13ac | 487 | sym_ntop(const struct res_sym *syms, int number, int *success) { |
df21c858 UD |
488 | static char unname[20]; |
489 | ||
b43b13ac | 490 | for ((void)NULL; syms->name != 0; syms++) { |
df21c858 UD |
491 | if (number == syms->number) { |
492 | if (success) | |
493 | *success = 1; | |
494 | return (syms->humanname); | |
495 | } | |
496 | } | |
b43b13ac | 497 | sprintf(unname, "%d", number); /* XXX nonreentrant */ |
df21c858 UD |
498 | if (success) |
499 | *success = 0; | |
500 | return (unname); | |
501 | } | |
502 | ||
28f540f4 | 503 | /* |
b43b13ac | 504 | * Return a string for the type. |
28f540f4 RM |
505 | */ |
506 | const char * | |
b43b13ac UD |
507 | p_type(int type) { |
508 | return (sym_ntos(__p_type_syms, type, (int *)0)); | |
28f540f4 | 509 | } |
6f9d8e68 | 510 | libresolv_hidden_def (p_type) |
28f540f4 RM |
511 | |
512 | /* | |
b43b13ac | 513 | * Return a string for the type. |
28f540f4 RM |
514 | */ |
515 | const char * | |
b43b13ac UD |
516 | p_section(int section, int opcode) { |
517 | const struct res_sym *symbols; | |
518 | ||
519 | switch (opcode) { | |
520 | case ns_o_update: | |
521 | symbols = __p_update_section_syms; | |
522 | break; | |
523 | default: | |
524 | symbols = __p_default_section_syms; | |
525 | break; | |
526 | } | |
527 | return (sym_ntos(symbols, section, (int *)0)); | |
528 | } | |
529 | ||
530 | /* | |
531 | * Return a mnemonic for class. | |
532 | */ | |
533 | const char * | |
534 | p_class(int class) { | |
535 | return (sym_ntos(__p_class_syms, class, (int *)0)); | |
28f540f4 | 536 | } |
6f9d8e68 | 537 | libresolv_hidden_def (p_class) |
28f540f4 RM |
538 | |
539 | /* | |
540 | * Return a mnemonic for an option | |
541 | */ | |
542 | const char * | |
b43b13ac | 543 | p_option(u_long option) { |
3d61b63c RM |
544 | static char nbuf[40]; |
545 | ||
28f540f4 RM |
546 | switch (option) { |
547 | case RES_INIT: return "init"; | |
548 | case RES_DEBUG: return "debug"; | |
c3ed8088 | 549 | case RES_USEVC: return "use-vc"; |
28f540f4 RM |
550 | case RES_IGNTC: return "igntc"; |
551 | case RES_RECURSE: return "recurs"; | |
552 | case RES_DEFNAMES: return "defnam"; | |
553 | case RES_STAYOPEN: return "styopn"; | |
554 | case RES_DNSRCH: return "dnsrch"; | |
555 | case RES_INSECURE1: return "insecure1"; | |
556 | case RES_INSECURE2: return "insecure2"; | |
b1a36ceb | 557 | case RES_NOALIASES: return "noaliases"; |
ee778b56 UD |
558 | case RES_USE_INET6: return "inet6"; |
559 | case RES_ROTATE: return "rotate"; | |
b1a36ceb | 560 | case RES_BLAST: return "blast"; |
2d0671cb | 561 | case RES_USE_EDNS0: return "edns0"; |
b1a36ceb AJ |
562 | case RES_SNGLKUP: return "single-request"; |
563 | case RES_SNGLKUPREOP: return "single-request-reopen"; | |
2d0671cb | 564 | case RES_USE_DNSSEC: return "dnssec"; |
f87dfb1f | 565 | case RES_NOTLDQUERY: return "no-tld-query"; |
b43b13ac | 566 | /* XXX nonreentrant */ |
3d61b63c RM |
567 | default: sprintf(nbuf, "?0x%lx?", (u_long)option); |
568 | return (nbuf); | |
28f540f4 RM |
569 | } |
570 | } | |
6f9d8e68 | 571 | libresolv_hidden_def (p_option) |
28f540f4 RM |
572 | |
573 | /* | |
b43b13ac | 574 | * Return a mnemonic for a time to live. |
28f540f4 | 575 | */ |
845dcb57 | 576 | const char * |
b43b13ac UD |
577 | p_time(u_int32_t value) { |
578 | static char nbuf[40]; /* XXX nonreentrant */ | |
28f540f4 | 579 | |
b43b13ac UD |
580 | if (ns_format_ttl(value, nbuf, sizeof nbuf) < 0) |
581 | sprintf(nbuf, "%u", value); | |
28f540f4 RM |
582 | return (nbuf); |
583 | } | |
ee188d55 | 584 | |
b43b13ac UD |
585 | /* |
586 | * Return a string for the rcode. | |
587 | */ | |
588 | const char * | |
589 | p_rcode(int rcode) { | |
590 | return (sym_ntos(__p_rcode_syms, rcode, (int *)0)); | |
591 | } | |
6f9d8e68 | 592 | libresolv_hidden_def (p_rcode) |
b43b13ac | 593 | |
ee188d55 RM |
594 | /* |
595 | * routines to convert between on-the-wire RR format and zone file format. | |
596 | * Does not contain conversion to/from decimal degrees; divide or multiply | |
597 | * by 60*60*1000 for that. | |
598 | */ | |
599 | ||
6f9d8e68 UD |
600 | static const unsigned int poweroften[10]= |
601 | { 1, 10, 100, 1000, 10000, 100000, | |
602 | 1000000,10000000,100000000,1000000000}; | |
ee188d55 RM |
603 | |
604 | /* takes an XeY precision/size value, returns a string representation. */ | |
605 | static const char * | |
db0a00d3 | 606 | precsize_ntoa (u_int8_t prec) |
ee188d55 | 607 | { |
b43b13ac | 608 | static char retbuf[sizeof "90000000.00"]; /* XXX nonreentrant */ |
ee188d55 RM |
609 | unsigned long val; |
610 | int mantissa, exponent; | |
611 | ||
612 | mantissa = (int)((prec >> 4) & 0x0f) % 10; | |
613 | exponent = (int)((prec >> 0) & 0x0f) % 10; | |
614 | ||
615 | val = mantissa * poweroften[exponent]; | |
616 | ||
617 | (void) sprintf(retbuf, "%ld.%.2ld", val/100, val%100); | |
618 | return (retbuf); | |
619 | } | |
620 | ||
621 | /* converts ascii size/precision X * 10**Y(cm) to 0xXY. moves pointer. */ | |
622 | static u_int8_t | |
db0a00d3 | 623 | precsize_aton (const char **strptr) |
ee188d55 | 624 | { |
b43b13ac | 625 | unsigned int mval = 0, cmval = 0; |
ee188d55 | 626 | u_int8_t retval = 0; |
0a463fa9 | 627 | const char *cp; |
b43b13ac UD |
628 | int exponent; |
629 | int mantissa; | |
ee188d55 RM |
630 | |
631 | cp = *strptr; | |
632 | ||
b43b13ac UD |
633 | while (isdigit(*cp)) |
634 | mval = mval * 10 + (*cp++ - '0'); | |
635 | ||
636 | if (*cp == '.') { /* centimeters */ | |
ee188d55 RM |
637 | cp++; |
638 | if (isdigit(*cp)) { | |
b43b13ac | 639 | cmval = (*cp++ - '0') * 10; |
ee188d55 | 640 | if (isdigit(*cp)) { |
b43b13ac | 641 | cmval += (*cp++ - '0'); |
ee188d55 RM |
642 | } |
643 | } | |
644 | } | |
b43b13ac UD |
645 | cmval = (mval * 100) + cmval; |
646 | ||
647 | for (exponent = 0; exponent < 9; exponent++) | |
648 | if (cmval < poweroften[exponent+1]) | |
649 | break; | |
650 | ||
651 | mantissa = cmval / poweroften[exponent]; | |
652 | if (mantissa > 9) | |
653 | mantissa = 9; | |
ee188d55 RM |
654 | |
655 | retval = (mantissa << 4) | exponent; | |
b43b13ac | 656 | |
ee188d55 | 657 | *strptr = cp; |
b43b13ac | 658 | |
ee188d55 RM |
659 | return (retval); |
660 | } | |
661 | ||
662 | /* converts ascii lat/lon to unsigned encoded 32-bit number. moves pointer. */ | |
663 | static u_int32_t | |
db0a00d3 | 664 | latlon2ul (const char **latlonstrptr, int *which) |
ee188d55 | 665 | { |
0a463fa9 | 666 | const char *cp; |
ee188d55 RM |
667 | u_int32_t retval; |
668 | int deg = 0, min = 0, secs = 0, secsfrac = 0; | |
669 | ||
670 | cp = *latlonstrptr; | |
671 | ||
672 | while (isdigit(*cp)) | |
673 | deg = deg * 10 + (*cp++ - '0'); | |
674 | ||
675 | while (isspace(*cp)) | |
676 | cp++; | |
677 | ||
678 | if (!(isdigit(*cp))) | |
679 | goto fndhemi; | |
680 | ||
681 | while (isdigit(*cp)) | |
682 | min = min * 10 + (*cp++ - '0'); | |
683 | ||
684 | while (isspace(*cp)) | |
685 | cp++; | |
686 | ||
687 | if (!(isdigit(*cp))) | |
688 | goto fndhemi; | |
689 | ||
690 | while (isdigit(*cp)) | |
691 | secs = secs * 10 + (*cp++ - '0'); | |
692 | ||
693 | if (*cp == '.') { /* decimal seconds */ | |
694 | cp++; | |
695 | if (isdigit(*cp)) { | |
696 | secsfrac = (*cp++ - '0') * 100; | |
697 | if (isdigit(*cp)) { | |
698 | secsfrac += (*cp++ - '0') * 10; | |
699 | if (isdigit(*cp)) { | |
700 | secsfrac += (*cp++ - '0'); | |
701 | } | |
702 | } | |
703 | } | |
704 | } | |
705 | ||
706 | while (!isspace(*cp)) /* if any trailing garbage */ | |
707 | cp++; | |
708 | ||
709 | while (isspace(*cp)) | |
710 | cp++; | |
711 | ||
712 | fndhemi: | |
713 | switch (*cp) { | |
714 | case 'N': case 'n': | |
715 | case 'E': case 'e': | |
716 | retval = ((unsigned)1<<31) | |
717 | + (((((deg * 60) + min) * 60) + secs) * 1000) | |
718 | + secsfrac; | |
719 | break; | |
720 | case 'S': case 's': | |
721 | case 'W': case 'w': | |
722 | retval = ((unsigned)1<<31) | |
723 | - (((((deg * 60) + min) * 60) + secs) * 1000) | |
724 | - secsfrac; | |
725 | break; | |
726 | default: | |
727 | retval = 0; /* invalid value -- indicates error */ | |
728 | break; | |
729 | } | |
730 | ||
731 | switch (*cp) { | |
732 | case 'N': case 'n': | |
733 | case 'S': case 's': | |
734 | *which = 1; /* latitude */ | |
735 | break; | |
736 | case 'E': case 'e': | |
737 | case 'W': case 'w': | |
738 | *which = 2; /* longitude */ | |
739 | break; | |
740 | default: | |
741 | *which = 0; /* error */ | |
742 | break; | |
743 | } | |
744 | ||
745 | cp++; /* skip the hemisphere */ | |
746 | ||
747 | while (!isspace(*cp)) /* if any trailing garbage */ | |
748 | cp++; | |
749 | ||
750 | while (isspace(*cp)) /* move to next field */ | |
751 | cp++; | |
752 | ||
753 | *latlonstrptr = cp; | |
754 | ||
755 | return (retval); | |
756 | } | |
757 | ||
758 | /* converts a zone file representation in a string to an RDATA on-the-wire | |
759 | * representation. */ | |
760 | int | |
9d46370c | 761 | loc_aton (const char *ascii, u_char *binary) |
ee188d55 RM |
762 | { |
763 | const char *cp, *maxcp; | |
764 | u_char *bcp; | |
765 | ||
766 | u_int32_t latit = 0, longit = 0, alt = 0; | |
767 | u_int32_t lltemp1 = 0, lltemp2 = 0; | |
768 | int altmeters = 0, altfrac = 0, altsign = 1; | |
769 | u_int8_t hp = 0x16; /* default = 1e6 cm = 10000.00m = 10km */ | |
770 | u_int8_t vp = 0x13; /* default = 1e3 cm = 10.00m */ | |
771 | u_int8_t siz = 0x12; /* default = 1e2 cm = 1.00m */ | |
772 | int which1 = 0, which2 = 0; | |
773 | ||
774 | cp = ascii; | |
775 | maxcp = cp + strlen(ascii); | |
776 | ||
777 | lltemp1 = latlon2ul(&cp, &which1); | |
778 | ||
779 | lltemp2 = latlon2ul(&cp, &which2); | |
780 | ||
781 | switch (which1 + which2) { | |
782 | case 3: /* 1 + 2, the only valid combination */ | |
783 | if ((which1 == 1) && (which2 == 2)) { /* normal case */ | |
784 | latit = lltemp1; | |
785 | longit = lltemp2; | |
786 | } else if ((which1 == 2) && (which2 == 1)) { /* reversed */ | |
787 | longit = lltemp1; | |
788 | latit = lltemp2; | |
789 | } else { /* some kind of brokenness */ | |
df21c858 | 790 | return (0); |
ee188d55 RM |
791 | } |
792 | break; | |
793 | default: /* we didn't get one of each */ | |
df21c858 | 794 | return (0); |
ee188d55 RM |
795 | } |
796 | ||
797 | /* altitude */ | |
798 | if (*cp == '-') { | |
799 | altsign = -1; | |
800 | cp++; | |
801 | } | |
0a463fa9 | 802 | |
ee188d55 RM |
803 | if (*cp == '+') |
804 | cp++; | |
805 | ||
806 | while (isdigit(*cp)) | |
807 | altmeters = altmeters * 10 + (*cp++ - '0'); | |
808 | ||
809 | if (*cp == '.') { /* decimal meters */ | |
810 | cp++; | |
811 | if (isdigit(*cp)) { | |
812 | altfrac = (*cp++ - '0') * 10; | |
813 | if (isdigit(*cp)) { | |
814 | altfrac += (*cp++ - '0'); | |
815 | } | |
816 | } | |
817 | } | |
818 | ||
819 | alt = (10000000 + (altsign * (altmeters * 100 + altfrac))); | |
820 | ||
821 | while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ | |
822 | cp++; | |
823 | ||
824 | while (isspace(*cp) && (cp < maxcp)) | |
825 | cp++; | |
826 | ||
827 | if (cp >= maxcp) | |
828 | goto defaults; | |
829 | ||
830 | siz = precsize_aton(&cp); | |
0a463fa9 | 831 | |
ee188d55 RM |
832 | while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ |
833 | cp++; | |
834 | ||
835 | while (isspace(*cp) && (cp < maxcp)) | |
836 | cp++; | |
837 | ||
838 | if (cp >= maxcp) | |
839 | goto defaults; | |
840 | ||
841 | hp = precsize_aton(&cp); | |
842 | ||
843 | while (!isspace(*cp) && (cp < maxcp)) /* if trailing garbage or m */ | |
844 | cp++; | |
845 | ||
846 | while (isspace(*cp) && (cp < maxcp)) | |
847 | cp++; | |
848 | ||
849 | if (cp >= maxcp) | |
850 | goto defaults; | |
851 | ||
852 | vp = precsize_aton(&cp); | |
853 | ||
854 | defaults: | |
855 | ||
856 | bcp = binary; | |
857 | *bcp++ = (u_int8_t) 0; /* version byte */ | |
858 | *bcp++ = siz; | |
859 | *bcp++ = hp; | |
860 | *bcp++ = vp; | |
861 | PUTLONG(latit,bcp); | |
862 | PUTLONG(longit,bcp); | |
863 | PUTLONG(alt,bcp); | |
0a463fa9 | 864 | |
ee188d55 RM |
865 | return (16); /* size of RR in octets */ |
866 | } | |
867 | ||
868 | /* takes an on-the-wire LOC RR and formats it in a human readable format. */ | |
845dcb57 | 869 | const char * |
9d46370c | 870 | loc_ntoa (const u_char *binary, char *ascii) |
ee188d55 | 871 | { |
4442d58f | 872 | static const char error[] = "?"; |
b43b13ac UD |
873 | static char tmpbuf[sizeof |
874 | "1000 60 60.000 N 1000 60 60.000 W -12345678.00m 90000000.00m 90000000.00m 90000000.00m"]; | |
875 | const u_char *cp = binary; | |
ee188d55 RM |
876 | |
877 | int latdeg, latmin, latsec, latsecfrac; | |
878 | int longdeg, longmin, longsec, longsecfrac; | |
879 | char northsouth, eastwest; | |
880 | int altmeters, altfrac, altsign; | |
881 | ||
b43b13ac | 882 | const u_int32_t referencealt = 100000 * 100; |
ee188d55 RM |
883 | |
884 | int32_t latval, longval, altval; | |
885 | u_int32_t templ; | |
886 | u_int8_t sizeval, hpval, vpval, versionval; | |
0a463fa9 | 887 | |
ee188d55 RM |
888 | char *sizestr, *hpstr, *vpstr; |
889 | ||
890 | versionval = *cp++; | |
891 | ||
b43b13ac UD |
892 | if (ascii == NULL) |
893 | ascii = tmpbuf; | |
894 | ||
ee188d55 | 895 | if (versionval) { |
b43b13ac | 896 | (void) sprintf(ascii, "; error: unknown LOC RR version"); |
ee188d55 RM |
897 | return (ascii); |
898 | } | |
899 | ||
900 | sizeval = *cp++; | |
901 | ||
902 | hpval = *cp++; | |
903 | vpval = *cp++; | |
904 | ||
905 | GETLONG(templ, cp); | |
906 | latval = (templ - ((unsigned)1<<31)); | |
907 | ||
908 | GETLONG(templ, cp); | |
909 | longval = (templ - ((unsigned)1<<31)); | |
910 | ||
911 | GETLONG(templ, cp); | |
b43b13ac | 912 | if (templ < referencealt) { /* below WGS 84 spheroid */ |
ee188d55 RM |
913 | altval = referencealt - templ; |
914 | altsign = -1; | |
915 | } else { | |
916 | altval = templ - referencealt; | |
917 | altsign = 1; | |
918 | } | |
919 | ||
920 | if (latval < 0) { | |
921 | northsouth = 'S'; | |
922 | latval = -latval; | |
923 | } else | |
924 | northsouth = 'N'; | |
925 | ||
926 | latsecfrac = latval % 1000; | |
927 | latval = latval / 1000; | |
928 | latsec = latval % 60; | |
929 | latval = latval / 60; | |
930 | latmin = latval % 60; | |
931 | latval = latval / 60; | |
932 | latdeg = latval; | |
933 | ||
934 | if (longval < 0) { | |
935 | eastwest = 'W'; | |
936 | longval = -longval; | |
937 | } else | |
938 | eastwest = 'E'; | |
939 | ||
940 | longsecfrac = longval % 1000; | |
941 | longval = longval / 1000; | |
942 | longsec = longval % 60; | |
943 | longval = longval / 60; | |
944 | longmin = longval % 60; | |
945 | longval = longval / 60; | |
946 | longdeg = longval; | |
947 | ||
948 | altfrac = altval % 100; | |
949 | altmeters = (altval / 100) * altsign; | |
950 | ||
951 | if ((sizestr = strdup(precsize_ntoa(sizeval))) == NULL) | |
4442d58f | 952 | sizestr = (char *) error; |
ee188d55 | 953 | if ((hpstr = strdup(precsize_ntoa(hpval))) == NULL) |
4442d58f | 954 | hpstr = (char *) error; |
ee188d55 | 955 | if ((vpstr = strdup(precsize_ntoa(vpval))) == NULL) |
4442d58f | 956 | vpstr = (char *) error; |
ee188d55 RM |
957 | |
958 | sprintf(ascii, | |
959 | "%d %.2d %.2d.%.3d %c %d %.2d %.2d.%.3d %c %d.%.2dm %sm %sm %sm", | |
960 | latdeg, latmin, latsec, latsecfrac, northsouth, | |
961 | longdeg, longmin, longsec, longsecfrac, eastwest, | |
962 | altmeters, altfrac, sizestr, hpstr, vpstr); | |
963 | ||
4442d58f | 964 | if (sizestr != (char *) error) |
ee188d55 | 965 | free(sizestr); |
4442d58f | 966 | if (hpstr != (char *) error) |
ee188d55 | 967 | free(hpstr); |
4442d58f | 968 | if (vpstr != (char *) error) |
ee188d55 RM |
969 | free(vpstr); |
970 | ||
971 | return (ascii); | |
972 | } | |
6f9d8e68 | 973 | libresolv_hidden_def (loc_ntoa) |
df21c858 UD |
974 | |
975 | ||
976 | /* Return the number of DNS hierarchy levels in the name. */ | |
977 | int | |
b43b13ac | 978 | dn_count_labels(const char *name) { |
df21c858 UD |
979 | int i, len, count; |
980 | ||
981 | len = strlen(name); | |
b43b13ac UD |
982 | for (i = 0, count = 0; i < len; i++) { |
983 | /* XXX need to check for \. or use named's nlabels(). */ | |
df21c858 UD |
984 | if (name[i] == '.') |
985 | count++; | |
986 | } | |
987 | ||
988 | /* don't count initial wildcard */ | |
989 | if (name[0] == '*') | |
990 | if (count) | |
991 | count--; | |
992 | ||
993 | /* don't count the null label for root. */ | |
994 | /* if terminating '.' not found, must adjust */ | |
995 | /* count to include last label */ | |
996 | if (len > 0 && name[len-1] != '.') | |
997 | count++; | |
998 | return (count); | |
999 | } | |
cd5743fd | 1000 | libresolv_hidden_def (__dn_count_labels) |
df21c858 UD |
1001 | |
1002 | ||
0a463fa9 RM |
1003 | /* |
1004 | * Make dates expressed in seconds-since-Jan-1-1970 easy to read. | |
df21c858 UD |
1005 | * SIG records are required to be printed like this, by the Secure DNS RFC. |
1006 | */ | |
1007 | char * | |
b43b13ac UD |
1008 | p_secstodate (u_long secs) { |
1009 | /* XXX nonreentrant */ | |
1010 | static char output[15]; /* YYYYMMDDHHMMSS and null */ | |
df21c858 | 1011 | time_t clock = secs; |
b43b13ac | 1012 | struct tm *time; |
0a463fa9 | 1013 | |
e685e07d | 1014 | struct tm timebuf; |
4efdc6d9 | 1015 | time = __gmtime_r(&clock, &timebuf); |
b43b13ac UD |
1016 | time->tm_year += 1900; |
1017 | time->tm_mon += 1; | |
df21c858 | 1018 | sprintf(output, "%04d%02d%02d%02d%02d%02d", |
b43b13ac UD |
1019 | time->tm_year, time->tm_mon, time->tm_mday, |
1020 | time->tm_hour, time->tm_min, time->tm_sec); | |
df21c858 UD |
1021 | return (output); |
1022 | } | |
cd5743fd | 1023 | libresolv_hidden_def (__p_secstodate) |