forked from c-ares/c-ares
-
Notifications
You must be signed in to change notification settings - Fork 0
/
acountry.c
641 lines (591 loc) · 25.2 KB
/
acountry.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
/*
*
* IP-address/hostname to country converter.
*
* Problem; you want to know where IP a.b.c.d is located.
*
* Use ares_gethostbyname ("d.c.b.a.zz.countries.nerd.dk")
* and get the CNAME (host->h_name). Result will be:
* CNAME = zz<CC>.countries.nerd.dk with address 127.0.x.y (ver 1) or
* CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.x.y (ver 2)
*
* The 2 letter country code is in <CC> and the ISO-3166 country
* number is in x.y (number = x*256 + y). Version 2 of the protocol is missing
* the <CC> number.
*
* Ref: http://countries.nerd.dk/more.html
*
* Written by G. Vanem <[email protected]> 2006, 2007
*
* NB! This program may not be big-endian aware.
*
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting
* documentation, and that the name of M.I.T. not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is"
* without express or implied warranty.
*/
#include "ares_setup.h"
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#if defined(WIN32) && !defined(WATT32)
#include <winsock.h>
#else
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#endif
#include "ares.h"
#include "ares_getopt.h"
#include "ares_nowarn.h"
#ifndef HAVE_STRDUP
# include "ares_strdup.h"
# define strdup(ptr) ares_strdup(ptr)
#endif
#ifndef HAVE_STRCASECMP
# include "ares_strcasecmp.h"
# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2)
#endif
#ifndef HAVE_STRNCASECMP
# include "ares_strcasecmp.h"
# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n)
#endif
#ifndef INADDR_NONE
#define INADDR_NONE 0xffffffff
#endif
/* By using a double cast, we can get rid of the bogus warning of
* warning: cast from 'const struct sockaddr *' to 'const struct sockaddr_in6 *' increases required alignment from 1 to 4 [-Wcast-align]
*/
#define CARES_INADDR_CAST(type, var) ((type)((void *)var))
static const char *usage = "acountry [-?hdv] {host|addr} ...\n";
static const char nerd_fmt[] = "%u.%u.%u.%u.zz.countries.nerd.dk";
static const char *nerd_ver1 = nerd_fmt + 14; /* .countries.nerd.dk */
static const char *nerd_ver2 = nerd_fmt + 11; /* .zz.countries.nerd.dk */
static int verbose = 0;
#define TRACE(fmt) do { \
if (verbose > 0) \
printf fmt ; \
} WHILE_FALSE
static void wait_ares(ares_channel channel);
static void callback(void *arg, int status, int timeouts, struct hostent *host);
static void callback2(void *arg, int status, int timeouts, struct hostent *host);
static void find_country_from_cname(const char *cname, struct in_addr addr);
static void print_help_info_acountry();
static void Abort(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
exit(1);
}
int main(int argc, char **argv)
{
ares_channel channel;
int ch, status;
#if defined(WIN32) && !defined(WATT32)
WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK);
WSADATA wsaData;
WSAStartup(wVersionRequested, &wsaData);
#endif
status = ares_library_init(ARES_LIB_INIT_ALL);
if (status != ARES_SUCCESS)
{
fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status));
return 1;
}
while ((ch = ares_getopt(argc, argv, "dvh?")) != -1)
switch (ch)
{
case 'd':
#ifdef WATT32
dbug_init();
#endif
break;
case 'v':
verbose++;
break;
case 'h':
print_help_info_acountry();
break;
case '?':
print_help_info_acountry();
break;
default:
Abort(usage);
}
argc -= optind;
argv += optind;
if (argc < 1)
Abort(usage);
status = ares_init(&channel);
if (status != ARES_SUCCESS)
{
fprintf(stderr, "ares_init: %s\n", ares_strerror(status));
return 1;
}
/* Initiate the queries, one per command-line argument. */
for ( ; *argv; argv++)
{
struct in_addr addr;
char buf[100];
/* If this fails, assume '*argv' is a host-name that
* must be resolved first
*/
if (ares_inet_pton(AF_INET, *argv, &addr) != 1)
{
ares_gethostbyname(channel, *argv, AF_INET, callback2, &addr);
wait_ares(channel);
if (addr.s_addr == INADDR_NONE)
{
printf("Failed to lookup %s\n", *argv);
continue;
}
}
sprintf(buf, nerd_fmt,
(unsigned int)(addr.s_addr >> 24),
(unsigned int)((addr.s_addr >> 16) & 255),
(unsigned int)((addr.s_addr >> 8) & 255),
(unsigned int)(addr.s_addr & 255));
TRACE(("Looking up %s...", buf));
fflush(stdout);
ares_gethostbyname(channel, buf, AF_INET, callback, buf);
}
wait_ares(channel);
ares_destroy(channel);
ares_library_cleanup();
#if defined(WIN32) && !defined(WATT32)
WSACleanup();
#endif
return 0;
}
/*
* Wait for the queries to complete.
*/
static void wait_ares(ares_channel channel)
{
for (;;)
{
struct timeval *tvp, tv;
fd_set read_fds, write_fds;
int nfds;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
nfds = ares_fds(channel, &read_fds, &write_fds);
if (nfds == 0)
break;
tvp = ares_timeout(channel, NULL, &tv);
nfds = select(nfds, &read_fds, &write_fds, NULL, tvp);
if (nfds < 0)
continue;
ares_process(channel, &read_fds, &write_fds);
}
}
/*
* This is the callback used when we have the IP-address of interest.
* Extract the CNAME and figure out the country-code from it.
*/
static void callback(void *arg, int status, int timeouts, struct hostent *host)
{
const char *name = (const char*)arg;
const char *cname;
char buf[20];
(void)timeouts;
if (!host || status != ARES_SUCCESS)
{
printf("Failed to lookup %s: %s\n", name, ares_strerror(status));
return;
}
TRACE(("\nFound address %s, name %s\n",
ares_inet_ntop(AF_INET,(const char*)host->h_addr,buf,sizeof(buf)),
host->h_name));
cname = host->h_name; /* CNAME gets put here */
if (!cname)
printf("Failed to get CNAME for %s\n", name);
else
find_country_from_cname(cname, *(CARES_INADDR_CAST(struct in_addr *, host->h_addr)));
}
/*
* This is the callback used to obtain the IP-address of the host of interest.
*/
static void callback2(void *arg, int status, int timeouts, struct hostent *host)
{
struct in_addr *addr = (struct in_addr*) arg;
(void)timeouts;
if (!host || status != ARES_SUCCESS)
memset(addr, INADDR_NONE, sizeof(*addr));
else
memcpy(addr, host->h_addr, sizeof(*addr));
}
struct search_list {
int country_number; /* ISO-3166 country number */
char short_name[3]; /* A2 short country code */
const char *long_name; /* normal country name */
};
static const struct search_list *list_lookup(int number, const struct search_list *list, int num)
{
while (num > 0 && list->long_name)
{
if (list->country_number == number)
return (list);
num--;
list++;
}
return (NULL);
}
/*
* Ref: ftp://ftp.ripe.net/iso3166-countrycodes.txt
*/
static const struct search_list country_list[] = {
{ 4, "af", "Afghanistan" },
{ 248, "ax", "Åland Island" },
{ 8, "al", "Albania" },
{ 12, "dz", "Algeria" },
{ 16, "as", "American Samoa" },
{ 20, "ad", "Andorra" },
{ 24, "ao", "Angola" },
{ 660, "ai", "Anguilla" },
{ 10, "aq", "Antarctica" },
{ 28, "ag", "Antigua & Barbuda" },
{ 32, "ar", "Argentina" },
{ 51, "am", "Armenia" },
{ 533, "aw", "Aruba" },
{ 36, "au", "Australia" },
{ 40, "at", "Austria" },
{ 31, "az", "Azerbaijan" },
{ 44, "bs", "Bahamas" },
{ 48, "bh", "Bahrain" },
{ 50, "bd", "Bangladesh" },
{ 52, "bb", "Barbados" },
{ 112, "by", "Belarus" },
{ 56, "be", "Belgium" },
{ 84, "bz", "Belize" },
{ 204, "bj", "Benin" },
{ 60, "bm", "Bermuda" },
{ 64, "bt", "Bhutan" },
{ 68, "bo", "Bolivia" },
{ 70, "ba", "Bosnia & Herzegowina" },
{ 72, "bw", "Botswana" },
{ 74, "bv", "Bouvet Island" },
{ 76, "br", "Brazil" },
{ 86, "io", "British Indian Ocean Territory" },
{ 96, "bn", "Brunei Darussalam" },
{ 100, "bg", "Bulgaria" },
{ 854, "bf", "Burkina Faso" },
{ 108, "bi", "Burundi" },
{ 116, "kh", "Cambodia" },
{ 120, "cm", "Cameroon" },
{ 124, "ca", "Canada" },
{ 132, "cv", "Cape Verde" },
{ 136, "ky", "Cayman Islands" },
{ 140, "cf", "Central African Republic" },
{ 148, "td", "Chad" },
{ 152, "cl", "Chile" },
{ 156, "cn", "China" },
{ 162, "cx", "Christmas Island" },
{ 166, "cc", "Cocos Islands" },
{ 170, "co", "Colombia" },
{ 174, "km", "Comoros" },
{ 178, "cg", "Congo" },
{ 180, "cd", "Congo" },
{ 184, "ck", "Cook Islands" },
{ 188, "cr", "Costa Rica" },
{ 384, "ci", "Cote d'Ivoire" },
{ 191, "hr", "Croatia" },
{ 192, "cu", "Cuba" },
{ 196, "cy", "Cyprus" },
{ 203, "cz", "Czech Republic" },
{ 208, "dk", "Denmark" },
{ 262, "dj", "Djibouti" },
{ 212, "dm", "Dominica" },
{ 214, "do", "Dominican Republic" },
{ 218, "ec", "Ecuador" },
{ 818, "eg", "Egypt" },
{ 222, "sv", "El Salvador" },
{ 226, "gq", "Equatorial Guinea" },
{ 232, "er", "Eritrea" },
{ 233, "ee", "Estonia" },
{ 231, "et", "Ethiopia" },
{ 238, "fk", "Falkland Islands" },
{ 234, "fo", "Faroe Islands" },
{ 242, "fj", "Fiji" },
{ 246, "fi", "Finland" },
{ 250, "fr", "France" },
{ 249, "fx", "France, Metropolitan" },
{ 254, "gf", "French Guiana" },
{ 258, "pf", "French Polynesia" },
{ 260, "tf", "French Southern Territories" },
{ 266, "ga", "Gabon" },
{ 270, "gm", "Gambia" },
{ 268, "ge", "Georgia" },
{ 276, "de", "Germany" },
{ 288, "gh", "Ghana" },
{ 292, "gi", "Gibraltar" },
{ 300, "gr", "Greece" },
{ 304, "gl", "Greenland" },
{ 308, "gd", "Grenada" },
{ 312, "gp", "Guadeloupe" },
{ 316, "gu", "Guam" },
{ 320, "gt", "Guatemala" },
{ 324, "gn", "Guinea" },
{ 624, "gw", "Guinea-Bissau" },
{ 328, "gy", "Guyana" },
{ 332, "ht", "Haiti" },
{ 334, "hm", "Heard & Mc Donald Islands" },
{ 336, "va", "Vatican City" },
{ 340, "hn", "Honduras" },
{ 344, "hk", "Hong kong" },
{ 348, "hu", "Hungary" },
{ 352, "is", "Iceland" },
{ 356, "in", "India" },
{ 360, "id", "Indonesia" },
{ 364, "ir", "Iran" },
{ 368, "iq", "Iraq" },
{ 372, "ie", "Ireland" },
{ 376, "il", "Israel" },
{ 380, "it", "Italy" },
{ 388, "jm", "Jamaica" },
{ 392, "jp", "Japan" },
{ 400, "jo", "Jordan" },
{ 398, "kz", "Kazakhstan" },
{ 404, "ke", "Kenya" },
{ 296, "ki", "Kiribati" },
{ 408, "kp", "Korea (north)" },
{ 410, "kr", "Korea (south)" },
{ 414, "kw", "Kuwait" },
{ 417, "kg", "Kyrgyzstan" },
{ 418, "la", "Laos" },
{ 428, "lv", "Latvia" },
{ 422, "lb", "Lebanon" },
{ 426, "ls", "Lesotho" },
{ 430, "lr", "Liberia" },
{ 434, "ly", "Libya" },
{ 438, "li", "Liechtenstein" },
{ 440, "lt", "Lithuania" },
{ 442, "lu", "Luxembourg" },
{ 446, "mo", "Macao" },
{ 807, "mk", "Macedonia" },
{ 450, "mg", "Madagascar" },
{ 454, "mw", "Malawi" },
{ 458, "my", "Malaysia" },
{ 462, "mv", "Maldives" },
{ 466, "ml", "Mali" },
{ 470, "mt", "Malta" },
{ 584, "mh", "Marshall Islands" },
{ 474, "mq", "Martinique" },
{ 478, "mr", "Mauritania" },
{ 480, "mu", "Mauritius" },
{ 175, "yt", "Mayotte" },
{ 484, "mx", "Mexico" },
{ 583, "fm", "Micronesia" },
{ 498, "md", "Moldova" },
{ 492, "mc", "Monaco" },
{ 496, "mn", "Mongolia" },
{ 500, "ms", "Montserrat" },
{ 504, "ma", "Morocco" },
{ 508, "mz", "Mozambique" },
{ 104, "mm", "Myanmar" },
{ 516, "na", "Namibia" },
{ 520, "nr", "Nauru" },
{ 524, "np", "Nepal" },
{ 528, "nl", "Netherlands" },
{ 530, "an", "Netherlands Antilles" },
{ 540, "nc", "New Caledonia" },
{ 554, "nz", "New Zealand" },
{ 558, "ni", "Nicaragua" },
{ 562, "ne", "Niger" },
{ 566, "ng", "Nigeria" },
{ 570, "nu", "Niue" },
{ 574, "nf", "Norfolk Island" },
{ 580, "mp", "Northern Mariana Islands" },
{ 578, "no", "Norway" },
{ 512, "om", "Oman" },
{ 586, "pk", "Pakistan" },
{ 585, "pw", "Palau" },
{ 275, "ps", "Palestinian Territory" },
{ 591, "pa", "Panama" },
{ 598, "pg", "Papua New Guinea" },
{ 600, "py", "Paraguay" },
{ 604, "pe", "Peru" },
{ 608, "ph", "Philippines" },
{ 612, "pn", "Pitcairn" },
{ 616, "pl", "Poland" },
{ 620, "pt", "Portugal" },
{ 630, "pr", "Puerto Rico" },
{ 634, "qa", "Qatar" },
{ 638, "re", "Reunion" },
{ 642, "ro", "Romania" },
{ 643, "ru", "Russia" },
{ 646, "rw", "Rwanda" },
{ 659, "kn", "Saint Kitts & Nevis" },
{ 662, "lc", "Saint Lucia" },
{ 670, "vc", "Saint Vincent" },
{ 882, "ws", "Samoa" },
{ 674, "sm", "San Marino" },
{ 678, "st", "Sao Tome & Principe" },
{ 682, "sa", "Saudi Arabia" },
{ 686, "sn", "Senegal" },
{ 891, "cs", "Serbia and Montenegro" },
{ 690, "sc", "Seychelles" },
{ 694, "sl", "Sierra Leone" },
{ 702, "sg", "Singapore" },
{ 703, "sk", "Slovakia" },
{ 705, "si", "Slovenia" },
{ 90, "sb", "Solomon Islands" },
{ 706, "so", "Somalia" },
{ 710, "za", "South Africa" },
{ 239, "gs", "South Georgia" },
{ 724, "es", "Spain" },
{ 144, "lk", "Sri Lanka" },
{ 654, "sh", "St. Helena" },
{ 666, "pm", "St. Pierre & Miquelon" },
{ 736, "sd", "Sudan" },
{ 740, "sr", "Suriname" },
{ 744, "sj", "Svalbard & Jan Mayen Islands" },
{ 748, "sz", "Swaziland" },
{ 752, "se", "Sweden" },
{ 756, "ch", "Switzerland" },
{ 760, "sy", "Syrian Arab Republic" },
{ 626, "tl", "Timor-Leste" },
{ 158, "tw", "Taiwan" },
{ 762, "tj", "Tajikistan" },
{ 834, "tz", "Tanzania" },
{ 764, "th", "Thailand" },
{ 768, "tg", "Togo" },
{ 772, "tk", "Tokelau" },
{ 776, "to", "Tonga" },
{ 780, "tt", "Trinidad & Tobago" },
{ 788, "tn", "Tunisia" },
{ 792, "tr", "Turkey" },
{ 795, "tm", "Turkmenistan" },
{ 796, "tc", "Turks & Caicos Islands" },
{ 798, "tv", "Tuvalu" },
{ 800, "ug", "Uganda" },
{ 804, "ua", "Ukraine" },
{ 784, "ae", "United Arab Emirates" },
{ 826, "gb", "United Kingdom" },
{ 840, "us", "United States" },
{ 581, "um", "United States Minor Outlying Islands" },
{ 858, "uy", "Uruguay" },
{ 860, "uz", "Uzbekistan" },
{ 548, "vu", "Vanuatu" },
{ 862, "ve", "Venezuela" },
{ 704, "vn", "Vietnam" },
{ 92, "vg", "Virgin Islands (British)" },
{ 850, "vi", "Virgin Islands (US)" },
{ 876, "wf", "Wallis & Futuna Islands" },
{ 732, "eh", "Western Sahara" },
{ 887, "ye", "Yemen" },
{ 894, "zm", "Zambia" },
{ 716, "zw", "Zimbabwe" }
};
/*
* Check if start of 'str' is simply an IPv4 address.
*/
#define BYTE_OK(x) ((x) >= 0 && (x) <= 255)
static int is_addr(char *str, char **end)
{
int a0, a1, a2, a3, num, rc = 0, length = 0;
num = sscanf(str,"%3d.%3d.%3d.%3d%n",&a0,&a1,&a2,&a3,&length);
if( (num == 4) &&
BYTE_OK(a0) && BYTE_OK(a1) && BYTE_OK(a2) && BYTE_OK(a3) &&
length >= (3+4))
{
rc = 1;
*end = str + length;
}
return rc;
}
/*
* Find the country-code and name from the CNAME. E.g.:
* version 1: CNAME = zzno.countries.nerd.dk with address 127.0.2.66
* yields ccode_A" = "no" and cnumber 578 (2.66).
* version 2: CNAME = <a.b.c.d>.zz.countries.nerd.dk with address 127.0.2.66
* yields cnumber 578 (2.66). ccode_A is "";
*/
static void find_country_from_cname(const char *cname, struct in_addr addr)
{
const struct search_list *country;
char ccode_A2[3], *ccopy, *dot_4;
int cnumber, z0, z1, ver_1, ver_2;
unsigned long ip;
ip = ntohl(addr.s_addr);
z0 = TOLOWER(cname[0]);
z1 = TOLOWER(cname[1]);
ccopy = strdup(cname);
dot_4 = NULL;
ver_1 = (z0 == 'z' && z1 == 'z' && !strcasecmp(cname+4,nerd_ver1));
ver_2 = (is_addr(ccopy,&dot_4) && !strcasecmp(dot_4,nerd_ver2));
if (ver_1)
{
const char *dot = strchr(cname, '.');
if (dot != cname+4)
{
printf("Unexpected CNAME %s (ver_1)\n", cname);
free(ccopy);
return;
}
}
else if (ver_2)
{
z0 = TOLOWER(dot_4[1]);
z1 = TOLOWER(dot_4[2]);
if (z0 != 'z' && z1 != 'z')
{
printf("Unexpected CNAME %s (ver_2)\n", cname);
free(ccopy);
return;
}
}
else
{
printf("Unexpected CNAME %s (ver?)\n", cname);
free(ccopy);
return;
}
if (ver_1)
{
ccode_A2[0] = (char)TOLOWER(cname[2]);
ccode_A2[1] = (char)TOLOWER(cname[3]);
ccode_A2[2] = '\0';
}
else
ccode_A2[0] = '\0';
cnumber = ip & 0xFFFF;
TRACE(("Found country-code `%s', number %d\n",
ver_1 ? ccode_A2 : "<n/a>", cnumber));
country = list_lookup(cnumber, country_list,
sizeof(country_list) / sizeof(country_list[0]));
if (!country)
printf("Name for country-number %d not found.\n", cnumber);
else
{
if (ver_1)
{
if ((country->short_name[0] != ccode_A2[0]) ||
(country->short_name[1] != ccode_A2[1]) ||
(country->short_name[2] != ccode_A2[2]))
printf("short-name mismatch; %s vs %s\n",
country->short_name, ccode_A2);
}
printf("%s (%s), number %d.\n",
country->long_name, country->short_name, cnumber);
}
free(ccopy);
}
/* Information from the man page. Formatting taken from man -h */
static void print_help_info_acountry() {
printf("acountry, version %s \n\n", ARES_VERSION_STR);
printf("usage: acountry [-hdv] {host|addr} ...\n\n"
" d : Print some extra debugging output.\n"
" h : Display this help and exit.\n"
" v : Be more verbose. Print extra information.\n\n");
exit(0);
}