1 /*
2 *
3 * IP-address/hostname to country converter.
4 *
5 * Problem; you want to know where IP a.b.c.d is located.
6 *
7 * Use ares_gethostbyname ("d.c.b.a.zz.countries.nerd.dk")
8 * and get the CNAME (host->h_name). Result will be:
9 * CNAME = zz<CC>.countries.nerd.dk with address 127.0.x.y (ver 1) or
10 * CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.x.y (ver 2)
11 *
12 * The 2 letter country code is in <CC> and the ISO-3166 country
13 * number is in x.y (number = x*256 + y). Version 2 of the protocol is missing
14 * the <CC> number.
15 *
16 * Ref: http://countries.nerd.dk/more.html
17 *
18 * Written by G. Vanem <gvanem@yahoo.no> 2006, 2007
19 *
20 * NB! This program may not be big-endian aware.
21 *
22 * Permission to use, copy, modify, and distribute this
23 * software and its documentation for any purpose and without
24 * fee is hereby granted, provided that the above copyright
25 * notice appear in all copies and that both that copyright
26 * notice and this permission notice appear in supporting
27 * documentation, and that the name of M.I.T. not be used in
28 * advertising or publicity pertaining to distribution of the
29 * software without specific, written prior permission.
30 * M.I.T. makes no representations about the suitability of
31 * this software for any purpose. It is provided "as is"
32 * without express or implied warranty.
33 */
34
35 #include "ares_setup.h"
36
37 #ifdef HAVE_STRINGS_H
38 #include <strings.h>
39 #endif
40
41 #if defined(WIN32) && !defined(WATT32)
42 #include <winsock.h>
43 #else
44 #include <arpa/inet.h>
45 #include <netinet/in.h>
46 #include <netdb.h>
47 #endif
48
49 #include "ares.h"
50 #include "ares_getopt.h"
51 #include "ares_nowarn.h"
52
53 #ifndef HAVE_STRDUP
54 # include "ares_strdup.h"
55 # define strdup(ptr) ares_strdup(ptr)
56 #endif
57
58 #ifndef HAVE_STRCASECMP
59 # include "ares_strcasecmp.h"
60 # define strcasecmp(p1,p2) ares_strcasecmp(p1,p2)
61 #endif
62
63 #ifndef HAVE_STRNCASECMP
64 # include "ares_strcasecmp.h"
65 # define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n)
66 #endif
67
68 #ifndef INADDR_NONE
69 #define INADDR_NONE 0xffffffff
70 #endif
71
72 /* By using a double cast, we can get rid of the bogus warning of
73 * warning: cast from 'const struct sockaddr *' to 'const struct sockaddr_in6 *' increases required alignment from 1 to 4 [-Wcast-align]
74 */
75 #define CARES_INADDR_CAST(type, var) ((type)((void *)var))
76
77 static const char *usage = "acountry [-?hdv] {host|addr} ...\n";
78 static const char nerd_fmt[] = "%u.%u.%u.%u.zz.countries.nerd.dk";
79 static const char *nerd_ver1 = nerd_fmt + 14; /* .countries.nerd.dk */
80 static const char *nerd_ver2 = nerd_fmt + 11; /* .zz.countries.nerd.dk */
81 static int verbose = 0;
82
83 #define TRACE(fmt) do { \
84 if (verbose > 0) \
85 printf fmt ; \
86 } WHILE_FALSE
87
88 static void wait_ares(ares_channel channel);
89 static void callback(void *arg, int status, int timeouts, struct hostent *host);
90 static void callback2(void *arg, int status, int timeouts, struct hostent *host);
91 static void find_country_from_cname(const char *cname, struct in_addr addr);
92 static void print_help_info_acountry(void);
93
Abort(const char * fmt,...)94 static void Abort(const char *fmt, ...)
95 {
96 va_list args;
97 va_start(args, fmt);
98 vfprintf(stderr, fmt, args);
99 va_end(args);
100 exit(1);
101 }
102
main(int argc,char ** argv)103 int main(int argc, char **argv)
104 {
105 ares_channel channel;
106 int ch, status;
107
108 #if defined(WIN32) && !defined(WATT32)
109 WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK);
110 WSADATA wsaData;
111 WSAStartup(wVersionRequested, &wsaData);
112 #endif
113
114 status = ares_library_init(ARES_LIB_INIT_ALL);
115 if (status != ARES_SUCCESS)
116 {
117 fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status));
118 return 1;
119 }
120
121 while ((ch = ares_getopt(argc, argv, "dvh?")) != -1)
122 switch (ch)
123 {
124 case 'd':
125 #ifdef WATT32
126 dbug_init();
127 #endif
128 break;
129 case 'v':
130 verbose++;
131 break;
132 case 'h':
133 print_help_info_acountry();
134 break;
135 case '?':
136 print_help_info_acountry();
137 break;
138 default:
139 Abort(usage);
140 }
141
142 argc -= optind;
143 argv += optind;
144 if (argc < 1)
145 Abort(usage);
146
147 status = ares_init(&channel);
148 if (status != ARES_SUCCESS)
149 {
150 fprintf(stderr, "ares_init: %s\n", ares_strerror(status));
151 return 1;
152 }
153
154 /* Initiate the queries, one per command-line argument. */
155 for ( ; *argv; argv++)
156 {
157 struct in_addr addr;
158 char *buf;
159
160 /* If this fails, assume '*argv' is a host-name that
161 * must be resolved first
162 */
163 if (ares_inet_pton(AF_INET, *argv, &addr) != 1)
164 {
165 ares_gethostbyname(channel, *argv, AF_INET, callback2, &addr);
166 wait_ares(channel);
167 if (addr.s_addr == INADDR_NONE)
168 {
169 printf("Failed to lookup %s\n", *argv);
170 continue;
171 }
172 }
173
174 buf = malloc(100);
175 sprintf(buf, nerd_fmt,
176 (unsigned int)(addr.s_addr >> 24),
177 (unsigned int)((addr.s_addr >> 16) & 255),
178 (unsigned int)((addr.s_addr >> 8) & 255),
179 (unsigned int)(addr.s_addr & 255));
180 TRACE(("Looking up %s...", buf));
181 fflush(stdout);
182 ares_gethostbyname(channel, buf, AF_INET, callback, buf);
183 }
184
185 wait_ares(channel);
186 ares_destroy(channel);
187
188 ares_library_cleanup();
189
190 #if defined(WIN32) && !defined(WATT32)
191 WSACleanup();
192 #endif
193
194 return 0;
195 }
196
197 /*
198 * Wait for the queries to complete.
199 */
wait_ares(ares_channel channel)200 static void wait_ares(ares_channel channel)
201 {
202 for (;;)
203 {
204 struct timeval *tvp, tv;
205 fd_set read_fds, write_fds;
206 int nfds;
207
208 FD_ZERO(&read_fds);
209 FD_ZERO(&write_fds);
210 nfds = ares_fds(channel, &read_fds, &write_fds);
211 if (nfds == 0)
212 break;
213 tvp = ares_timeout(channel, NULL, &tv);
214 nfds = select(nfds, &read_fds, &write_fds, NULL, tvp);
215 if (nfds < 0)
216 continue;
217 ares_process(channel, &read_fds, &write_fds);
218 }
219 }
220
221 /*
222 * This is the callback used when we have the IP-address of interest.
223 * Extract the CNAME and figure out the country-code from it.
224 */
callback(void * arg,int status,int timeouts,struct hostent * host)225 static void callback(void *arg, int status, int timeouts, struct hostent *host)
226 {
227 const char *name = (const char*)arg;
228 const char *cname;
229 char buf[20];
230
231 (void)timeouts;
232
233 if (!host || status != ARES_SUCCESS)
234 {
235 printf("Failed to lookup %s: %s\n", name, ares_strerror(status));
236 free(arg);
237 return;
238 }
239
240 TRACE(("\nFound address %s, name %s\n",
241 ares_inet_ntop(AF_INET,(const char*)host->h_addr,buf,sizeof(buf)),
242 host->h_name));
243
244 cname = host->h_name; /* CNAME gets put here */
245 if (!cname)
246 printf("Failed to get CNAME for %s\n", name);
247 else
248 find_country_from_cname(cname, *(CARES_INADDR_CAST(struct in_addr *, host->h_addr)));
249 free(arg);
250 }
251
252 /*
253 * This is the callback used to obtain the IP-address of the host of interest.
254 */
callback2(void * arg,int status,int timeouts,struct hostent * host)255 static void callback2(void *arg, int status, int timeouts, struct hostent *host)
256 {
257 struct in_addr *addr = (struct in_addr*) arg;
258
259 (void)timeouts;
260 if (!host || status != ARES_SUCCESS)
261 memset(addr, INADDR_NONE, sizeof(*addr));
262 else
263 memcpy(addr, host->h_addr, sizeof(*addr));
264 }
265
266 struct search_list {
267 int country_number; /* ISO-3166 country number */
268 char short_name[3]; /* A2 short country code */
269 const char *long_name; /* normal country name */
270 };
271
list_lookup(int number,const struct search_list * list,int num)272 static const struct search_list *list_lookup(int number, const struct search_list *list, int num)
273 {
274 while (num > 0 && list->long_name)
275 {
276 if (list->country_number == number)
277 return (list);
278 num--;
279 list++;
280 }
281 return (NULL);
282 }
283
284 /*
285 * Ref: https://en.wikipedia.org/wiki/ISO_3166-1
286 */
287 static const struct search_list country_list[] = {
288 { 4, "af", "Afghanistan" },
289 { 248, "ax", "Åland Island" },
290 { 8, "al", "Albania" },
291 { 12, "dz", "Algeria" },
292 { 16, "as", "American Samoa" },
293 { 20, "ad", "Andorra" },
294 { 24, "ao", "Angola" },
295 { 660, "ai", "Anguilla" },
296 { 10, "aq", "Antarctica" },
297 { 28, "ag", "Antigua & Barbuda" },
298 { 32, "ar", "Argentina" },
299 { 51, "am", "Armenia" },
300 { 533, "aw", "Aruba" },
301 { 36, "au", "Australia" },
302 { 40, "at", "Austria" },
303 { 31, "az", "Azerbaijan" },
304 { 44, "bs", "Bahamas" },
305 { 48, "bh", "Bahrain" },
306 { 50, "bd", "Bangladesh" },
307 { 52, "bb", "Barbados" },
308 { 112, "by", "Belarus" },
309 { 56, "be", "Belgium" },
310 { 84, "bz", "Belize" },
311 { 204, "bj", "Benin" },
312 { 60, "bm", "Bermuda" },
313 { 64, "bt", "Bhutan" },
314 { 68, "bo", "Bolivia" },
315 { 535, "bq", "Bonaire, Sint Eustatius and Saba" }, /* Formerly 'Bonaire' / 'Netherlands Antilles' */
316 { 70, "ba", "Bosnia & Herzegovina" },
317 { 72, "bw", "Botswana" },
318 { 74, "bv", "Bouvet Island" },
319 { 76, "br", "Brazil" },
320 { 86, "io", "British Indian Ocean Territory" },
321 { 96, "bn", "Brunei Darussalam" },
322 { 100, "bg", "Bulgaria" },
323 { 854, "bf", "Burkina Faso" },
324 { 108, "bi", "Burundi" },
325 { 116, "kh", "Cambodia" },
326 { 120, "cm", "Cameroon" },
327 { 124, "ca", "Canada" },
328 { 132, "cv", "Cape Verde" },
329 { 136, "ky", "Cayman Islands" },
330 { 140, "cf", "Central African Republic" },
331 { 148, "td", "Chad" },
332 { 152, "cl", "Chile" },
333 { 156, "cn", "China" },
334 { 162, "cx", "Christmas Island" },
335 { 166, "cc", "Cocos Islands" },
336 { 170, "co", "Colombia" },
337 { 174, "km", "Comoros" },
338 { 178, "cg", "Congo" },
339 { 180, "cd", "Congo" },
340 { 184, "ck", "Cook Islands" },
341 { 188, "cr", "Costa Rica" },
342 { 384, "ci", "Cote d'Ivoire" },
343 { 191, "hr", "Croatia" },
344 { 192, "cu", "Cuba" },
345 { 531, "cw", "Curaçao" },
346 { 196, "cy", "Cyprus" },
347 { 203, "cz", "Czech Republic" },
348 { 208, "dk", "Denmark" },
349 { 262, "dj", "Djibouti" },
350 { 212, "dm", "Dominica" },
351 { 214, "do", "Dominican Republic" },
352 { 218, "ec", "Ecuador" },
353 { 818, "eg", "Egypt" },
354 { 222, "sv", "El Salvador" },
355 { 226, "gq", "Equatorial Guinea" },
356 { 232, "er", "Eritrea" },
357 { 233, "ee", "Estonia" },
358 { 748, "sz", "Eswatini" }, /* Formerly Swaziland */
359 { 231, "et", "Ethiopia" },
360 { 65281, "eu", "European Union" }, /* 127.0.255.1 */
361 { 238, "fk", "Falkland Islands" },
362 { 234, "fo", "Faroe Islands" },
363 { 242, "fj", "Fiji" },
364 { 246, "fi", "Finland" },
365 { 250, "fr", "France" },
366 { 249, "fx", "France, Metropolitan" },
367 { 254, "gf", "French Guiana" },
368 { 258, "pf", "French Polynesia" },
369 { 260, "tf", "French Southern Territories" },
370 { 266, "ga", "Gabon" },
371 { 270, "gm", "Gambia" },
372 { 268, "ge", "Georgia" },
373 { 276, "de", "Germany" },
374 { 288, "gh", "Ghana" },
375 { 292, "gi", "Gibraltar" },
376 { 300, "gr", "Greece" },
377 { 304, "gl", "Greenland" },
378 { 308, "gd", "Grenada" },
379 { 312, "gp", "Guadeloupe" },
380 { 316, "gu", "Guam" },
381 { 320, "gt", "Guatemala" },
382 { 831, "gg", "Guernsey" },
383 { 324, "gn", "Guinea" },
384 { 624, "gw", "Guinea-Bissau" },
385 { 328, "gy", "Guyana" },
386 { 332, "ht", "Haiti" },
387 { 334, "hm", "Heard & Mc Donald Islands" },
388 { 336, "va", "Holy See" }, /* Vatican City */
389 { 340, "hn", "Honduras" },
390 { 344, "hk", "Hong kong" },
391 { 348, "hu", "Hungary" },
392 { 352, "is", "Iceland" },
393 { 356, "in", "India" },
394 { 360, "id", "Indonesia" },
395 { 364, "ir", "Iran" },
396 { 368, "iq", "Iraq" },
397 { 372, "ie", "Ireland" },
398 { 833, "im", "Isle of Man" },
399 { 376, "il", "Israel" },
400 { 380, "it", "Italy" },
401 { 388, "jm", "Jamaica" },
402 { 392, "jp", "Japan" },
403 { 832, "je", "Jersey" },
404 { 400, "jo", "Jordan" },
405 { 398, "kz", "Kazakhstan" },
406 { 404, "ke", "Kenya" },
407 { 296, "ki", "Kiribati" },
408 { 408, "kp", "Korea (north)" },
409 { 410, "kr", "Korea (south)" },
410 { 0, "xk", "Kosovo" }, /* https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2 */
411 { 414, "kw", "Kuwait" },
412 { 417, "kg", "Kyrgyzstan" },
413 { 418, "la", "Laos" },
414 { 428, "lv", "Latvia" },
415 { 422, "lb", "Lebanon" },
416 { 426, "ls", "Lesotho" },
417 { 430, "lr", "Liberia" },
418 { 434, "ly", "Libya" },
419 { 438, "li", "Liechtenstein" },
420 { 440, "lt", "Lithuania" },
421 { 442, "lu", "Luxembourg" },
422 { 446, "mo", "Macao" },
423 { 450, "mg", "Madagascar" },
424 { 454, "mw", "Malawi" },
425 { 458, "my", "Malaysia" },
426 { 462, "mv", "Maldives" },
427 { 466, "ml", "Mali" },
428 { 470, "mt", "Malta" },
429 { 584, "mh", "Marshall Islands" },
430 { 474, "mq", "Martinique" },
431 { 478, "mr", "Mauritania" },
432 { 480, "mu", "Mauritius" },
433 { 175, "yt", "Mayotte" },
434 { 484, "mx", "Mexico" },
435 { 583, "fm", "Micronesia" },
436 { 498, "md", "Moldova" },
437 { 492, "mc", "Monaco" },
438 { 496, "mn", "Mongolia" },
439 { 499, "me", "Montenegro" },
440 { 500, "ms", "Montserrat" },
441 { 504, "ma", "Morocco" },
442 { 508, "mz", "Mozambique" },
443 { 104, "mm", "Myanmar" },
444 { 516, "na", "Namibia" },
445 { 520, "nr", "Nauru" },
446 { 524, "np", "Nepal" },
447 { 528, "nl", "Netherlands" },
448 { 540, "nc", "New Caledonia" },
449 { 554, "nz", "New Zealand" },
450 { 558, "ni", "Nicaragua" },
451 { 562, "ne", "Niger" },
452 { 566, "ng", "Nigeria" },
453 { 570, "nu", "Niue" },
454 { 574, "nf", "Norfolk Island" },
455 { 807, "mk", "North Macedonia" }, /* 'Macedonia' until February 2019 */
456 { 580, "mp", "Northern Mariana Islands" },
457 { 578, "no", "Norway" },
458 { 512, "om", "Oman" },
459 { 586, "pk", "Pakistan" },
460 { 585, "pw", "Palau" },
461 { 275, "ps", "Palestinian Territory" },
462 { 591, "pa", "Panama" },
463 { 598, "pg", "Papua New Guinea" },
464 { 600, "py", "Paraguay" },
465 { 604, "pe", "Peru" },
466 { 608, "ph", "Philippines" },
467 { 612, "pn", "Pitcairn" },
468 { 616, "pl", "Poland" },
469 { 620, "pt", "Portugal" },
470 { 630, "pr", "Puerto Rico" },
471 { 634, "qa", "Qatar" },
472 { 638, "re", "Reunion" },
473 { 642, "ro", "Romania" },
474 { 643, "ru", "Russian Federation" },
475 { 646, "rw", "Rwanda" },
476 { 0, "bl", "Saint Barthélemy" }, /* https://en.wikipedia.org/wiki/ISO_3166-2:BL */
477 { 659, "kn", "Saint Kitts & Nevis" },
478 { 662, "lc", "Saint Lucia" },
479 { 663, "mf", "Saint Martin" },
480 { 670, "vc", "Saint Vincent" },
481 { 882, "ws", "Samoa" },
482 { 674, "sm", "San Marino" },
483 { 678, "st", "Sao Tome & Principe" },
484 { 682, "sa", "Saudi Arabia" },
485 { 686, "sn", "Senegal" },
486 { 688, "rs", "Serbia" },
487 { 690, "sc", "Seychelles" },
488 { 694, "sl", "Sierra Leone" },
489 { 702, "sg", "Singapore" },
490 { 534, "sx", "Sint Maarten" },
491 { 703, "sk", "Slovakia" },
492 { 705, "si", "Slovenia" },
493 { 90, "sb", "Solomon Islands" },
494 { 706, "so", "Somalia" },
495 { 710, "za", "South Africa" },
496 { 239, "gs", "South Georgia & South Sandwich Is." },
497 { 728, "ss", "South Sudan" },
498 { 724, "es", "Spain" },
499 { 144, "lk", "Sri Lanka" },
500 { 654, "sh", "St. Helena" },
501 { 666, "pm", "St. Pierre & Miquelon" },
502 { 736, "sd", "Sudan" },
503 { 740, "sr", "Suriname" },
504 { 744, "sj", "Svalbard & Jan Mayen Islands" },
505 { 752, "se", "Sweden" },
506 { 756, "ch", "Switzerland" },
507 { 760, "sy", "Syrian Arab Republic" },
508 { 158, "tw", "Taiwan" },
509 { 762, "tj", "Tajikistan" },
510 { 834, "tz", "Tanzania" },
511 { 764, "th", "Thailand" },
512 { 626, "tl", "Timor-Leste" },
513 { 768, "tg", "Togo" },
514 { 772, "tk", "Tokelau" },
515 { 776, "to", "Tonga" },
516 { 780, "tt", "Trinidad & Tobago" },
517 { 788, "tn", "Tunisia" },
518 { 792, "tr", "Turkey" },
519 { 795, "tm", "Turkmenistan" },
520 { 796, "tc", "Turks & Caicos Islands" },
521 { 798, "tv", "Tuvalu" },
522 { 800, "ug", "Uganda" },
523 { 804, "ua", "Ukraine" },
524 { 784, "ae", "United Arab Emirates" },
525 { 826, "gb", "United Kingdom" },
526 { 840, "us", "United States" },
527 { 581, "um", "United States Minor Outlying Islands" },
528 { 858, "uy", "Uruguay" },
529 { 860, "uz", "Uzbekistan" },
530 { 548, "vu", "Vanuatu" },
531 { 862, "ve", "Venezuela" },
532 { 704, "vn", "Vietnam" },
533 { 92, "vg", "Virgin Islands (British)" },
534 { 850, "vi", "Virgin Islands (US)" },
535 { 876, "wf", "Wallis & Futuna Islands" },
536 { 732, "eh", "Western Sahara" },
537 { 887, "ye", "Yemen" },
538 { 894, "zm", "Zambia" },
539 { 716, "zw", "Zimbabwe" }
540 };
541
542 /*
543 * Check if start of 'str' is simply an IPv4 address.
544 */
545 #define BYTE_OK(x) ((x) >= 0 && (x) <= 255)
546
is_addr(char * str,char ** end)547 static int is_addr(char *str, char **end)
548 {
549 int a0, a1, a2, a3, num, rc = 0, length = 0;
550
551 num = sscanf(str,"%3d.%3d.%3d.%3d%n",&a0,&a1,&a2,&a3,&length);
552 if( (num == 4) &&
553 BYTE_OK(a0) && BYTE_OK(a1) && BYTE_OK(a2) && BYTE_OK(a3) &&
554 length >= (3+4))
555 {
556 rc = 1;
557 *end = str + length;
558 }
559 return rc;
560 }
561
562 /*
563 * Find the country-code and name from the CNAME. E.g.:
564 * version 1: CNAME = zzno.countries.nerd.dk with address 127.0.2.66
565 * yields ccode_A" = "no" and cnumber 578 (2.66).
566 * version 2: CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.2.66
567 * yields cnumber 578 (2.66). ccode_A is "";
568 */
find_country_from_cname(const char * cname,struct in_addr addr)569 static void find_country_from_cname(const char *cname, struct in_addr addr)
570 {
571 const struct search_list *country;
572 char ccode_A2[3], *ccopy, *dot_4;
573 int cnumber, z0, z1, ver_1, ver_2;
574 unsigned long ip;
575
576 ip = ntohl(addr.s_addr);
577 z0 = TOLOWER(cname[0]);
578 z1 = TOLOWER(cname[1]);
579 ccopy = strdup(cname);
580 dot_4 = NULL;
581
582 ver_1 = (z0 == 'z' && z1 == 'z' && !strcasecmp(cname+4,nerd_ver1));
583 ver_2 = (is_addr(ccopy,&dot_4) && !strcasecmp(dot_4,nerd_ver2));
584
585 if (ver_1)
586 {
587 const char *dot = strchr(cname, '.');
588 if (dot != cname+4)
589 {
590 printf("Unexpected CNAME %s (ver_1)\n", cname);
591 free(ccopy);
592 return;
593 }
594 }
595 else if (ver_2)
596 {
597 z0 = TOLOWER(dot_4[1]);
598 z1 = TOLOWER(dot_4[2]);
599 if (z0 != 'z' && z1 != 'z')
600 {
601 printf("Unexpected CNAME %s (ver_2)\n", cname);
602 free(ccopy);
603 return;
604 }
605 }
606 else
607 {
608 printf("Unexpected CNAME %s (ver?)\n", cname);
609 free(ccopy);
610 return;
611 }
612
613 if (ver_1)
614 {
615 ccode_A2[0] = (char)TOLOWER(cname[2]);
616 ccode_A2[1] = (char)TOLOWER(cname[3]);
617 ccode_A2[2] = '\0';
618 }
619 else
620 ccode_A2[0] = '\0';
621
622 cnumber = ip & 0xFFFF;
623
624 TRACE(("Found country-code `%s', number %d\n",
625 ver_1 ? ccode_A2 : "<n/a>", cnumber));
626
627 country = list_lookup(cnumber, country_list,
628 sizeof(country_list) / sizeof(country_list[0]));
629 if (!country)
630 printf("Name for country-number %d not found.\n", cnumber);
631 else
632 {
633 if (ver_1)
634 {
635 if ((country->short_name[0] != ccode_A2[0]) ||
636 (country->short_name[1] != ccode_A2[1]) ||
637 (country->short_name[2] != ccode_A2[2]))
638 printf("short-name mismatch; %s vs %s\n",
639 country->short_name, ccode_A2);
640 }
641 printf("%s (%s), number %d.\n",
642 country->long_name, country->short_name, cnumber);
643 }
644 free(ccopy);
645 }
646
647 /* Information from the man page. Formatting taken from man -h */
print_help_info_acountry(void)648 static void print_help_info_acountry(void) {
649 printf("acountry, version %s\n\n", ARES_VERSION_STR);
650 printf("usage: acountry [-hdv] host|addr ...\n\n"
651 " h : Display this help and exit.\n"
652 " d : Print some extra debugging output.\n"
653 " v : Be more verbose. Print extra information.\n\n");
654 exit(0);
655 }
656