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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * utils.c | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
aba5acdf SH |
11 | */ |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
697ac639 | 15 | #include <math.h> |
aba5acdf SH |
16 | #include <unistd.h> |
17 | #include <syslog.h> | |
18 | #include <fcntl.h> | |
5bd9dd49 | 19 | #include <limits.h> |
aba5acdf SH |
20 | #include <sys/socket.h> |
21 | #include <netinet/in.h> | |
22 | #include <string.h> | |
23 | #include <netdb.h> | |
24 | #include <arpa/inet.h> | |
5dfe5561 | 25 | #include <asm/types.h> |
aba5acdf | 26 | #include <linux/pkt_sched.h> |
5bd9dd49 | 27 | #include <linux/param.h> |
90f93024 SH |
28 | #include <time.h> |
29 | #include <sys/time.h> | |
30d10db5 | 30 | #include <errno.h> |
90f93024 | 31 | |
aba5acdf SH |
32 | |
33 | #include "utils.h" | |
34 | ||
4094db72 | 35 | int get_integer(int *val, const char *arg, int base) |
aba5acdf SH |
36 | { |
37 | long res; | |
38 | char *ptr; | |
39 | ||
40 | if (!arg || !*arg) | |
41 | return -1; | |
697ac639 | 42 | |
aba5acdf | 43 | res = strtol(arg, &ptr, base); |
697ac639 SH |
44 | |
45 | /* If there were no digits at all, strtol() stores | |
46 | * the original value of nptr in *endptr (and returns 0). | |
47 | * In particular, if *nptr is not '\0' but **endptr is '\0' on return, | |
48 | * the entire string is valid. | |
49 | */ | |
50 | if (!ptr || ptr == arg || *ptr) | |
51 | return -1; | |
52 | ||
53 | /* If an underflow occurs, strtol() returns LONG_MIN. | |
54 | * If an overflow occurs, strtol() returns LONG_MAX. | |
55 | * In both cases, errno is set to ERANGE. | |
56 | */ | |
57 | if ((res == LONG_MAX || res == LONG_MIN) && errno == ERANGE) | |
aba5acdf | 58 | return -1; |
697ac639 SH |
59 | |
60 | /* Outside range of int */ | |
61 | if (res < INT_MIN || res > INT_MAX) | |
62 | return -1; | |
63 | ||
aba5acdf SH |
64 | *val = res; |
65 | return 0; | |
66 | } | |
67 | ||
6b1ac654 | 68 | int mask2bits(__u32 netmask) |
4b270b17 SH |
69 | { |
70 | unsigned bits = 0; | |
6b1ac654 SH |
71 | __u32 mask = ntohl(netmask); |
72 | __u32 host = ~mask; | |
4b270b17 | 73 | |
6b1ac654 SH |
74 | /* a valid netmask must be 2^n - 1 */ |
75 | if ((host & (host + 1)) != 0) | |
76 | return -1; | |
4b270b17 | 77 | |
6b1ac654 SH |
78 | for (; mask; mask <<= 1) |
79 | ++bits; | |
4b270b17 SH |
80 | return bits; |
81 | } | |
82 | ||
5a0d1cbf AH |
83 | static int get_netmask(unsigned *val, const char *arg, int base) |
84 | { | |
85 | inet_prefix addr; | |
86 | ||
87 | if (!get_unsigned(val, arg, base)) | |
88 | return 0; | |
89 | ||
90 | /* try coverting dotted quad to CIDR */ | |
6b1ac654 SH |
91 | if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) { |
92 | int b = mask2bits(addr.data[0]); | |
93 | ||
94 | if (b >= 0) { | |
95 | *val = b; | |
5a0d1cbf | 96 | return 0; |
6b1ac654 | 97 | } |
5a0d1cbf AH |
98 | } |
99 | ||
100 | return -1; | |
101 | } | |
102 | ||
4094db72 | 103 | int get_unsigned(unsigned *val, const char *arg, int base) |
aba5acdf SH |
104 | { |
105 | unsigned long res; | |
106 | char *ptr; | |
107 | ||
108 | if (!arg || !*arg) | |
109 | return -1; | |
697ac639 | 110 | |
aba5acdf | 111 | res = strtoul(arg, &ptr, base); |
697ac639 SH |
112 | |
113 | /* empty string or trailing non-digits */ | |
114 | if (!ptr || ptr == arg || *ptr) | |
115 | return -1; | |
116 | ||
117 | /* overflow */ | |
118 | if (res == ULONG_MAX && errno == ERANGE) | |
aba5acdf | 119 | return -1; |
697ac639 SH |
120 | |
121 | /* out side range of unsigned */ | |
122 | if (res > UINT_MAX) | |
123 | return -1; | |
124 | ||
aba5acdf SH |
125 | *val = res; |
126 | return 0; | |
127 | } | |
128 | ||
54e0b2e7 | 129 | /* |
db6b0cfa GR |
130 | * get_time_rtt is "translated" from a similar routine "get_time" in |
131 | * tc_util.c. We don't use the exact same routine because tc passes | |
132 | * microseconds to the kernel and the callers of get_time_rtt want to | |
133 | * pass milliseconds (standard unit for rtt values since 2.6.27), and | |
134 | * have a different assumption for the units of a "raw" number. | |
54e0b2e7 | 135 | */ |
db6b0cfa | 136 | int get_time_rtt(unsigned *val, const char *arg, int *raw) |
54e0b2e7 RJ |
137 | { |
138 | double t; | |
139 | unsigned long res; | |
140 | char *p; | |
141 | ||
697ac639 SH |
142 | if (strchr(arg, '.') != NULL) { |
143 | t = strtod(arg, &p); | |
54e0b2e7 RJ |
144 | if (t < 0.0) |
145 | return -1; | |
697ac639 SH |
146 | |
147 | /* extra non-digits */ | |
148 | if (!p || p == arg || *p) | |
149 | return -1; | |
150 | ||
151 | /* over/underflow */ | |
152 | if ((t == HUGE_VALF || t == HUGE_VALL) && errno == ERANGE) | |
153 | return -1; | |
154 | } else { | |
897fb84f | 155 | res = strtoul(arg, &p, 0); |
697ac639 SH |
156 | |
157 | /* empty string or trailing non-digits */ | |
158 | if (!p || p == arg || *p) | |
159 | return -1; | |
160 | ||
161 | /* overflow */ | |
162 | if (res == ULONG_MAX && errno == ERANGE) | |
54e0b2e7 | 163 | return -1; |
697ac639 | 164 | |
54e0b2e7 RJ |
165 | t = (double)res; |
166 | } | |
697ac639 | 167 | |
54e0b2e7 RJ |
168 | if (p == arg) |
169 | return -1; | |
54e0b2e7 RJ |
170 | *raw = 1; |
171 | ||
172 | if (*p) { | |
173 | *raw = 0; | |
174 | if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 || | |
175 | strcasecmp(p, "secs")==0) | |
fca1dae8 | 176 | t *= 1000; |
54e0b2e7 RJ |
177 | else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 || |
178 | strcasecmp(p, "msecs") == 0) | |
54e0b2e7 RJ |
179 | t *= 1.0; /* allow suffix, do nothing */ |
180 | else | |
181 | return -1; | |
182 | } | |
183 | ||
184 | /* emulate ceil() without having to bring-in -lm and always be >= 1 */ | |
185 | ||
db6b0cfa GR |
186 | *val = t; |
187 | if (*val < t) | |
188 | *val += 1; | |
54e0b2e7 RJ |
189 | |
190 | return 0; | |
191 | ||
192 | } | |
193 | ||
c7699875 | 194 | int get_u64(__u64 *val, const char *arg, int base) |
195 | { | |
196 | unsigned long long res; | |
197 | char *ptr; | |
198 | ||
199 | if (!arg || !*arg) | |
200 | return -1; | |
697ac639 | 201 | |
c7699875 | 202 | res = strtoull(arg, &ptr, base); |
697ac639 SH |
203 | |
204 | /* empty string or trailing non-digits */ | |
205 | if (!ptr || ptr == arg || *ptr) | |
206 | return -1; | |
207 | ||
208 | /* overflow */ | |
209 | if (res == ULLONG_MAX && errno == ERANGE) | |
210 | return -1; | |
211 | ||
212 | /* in case ULL is 128 bits */ | |
213 | if (res > 0xFFFFFFFFFFFFFFFFULL) | |
214 | return -1; | |
215 | ||
c7699875 | 216 | *val = res; |
217 | return 0; | |
218 | } | |
219 | ||
4094db72 | 220 | int get_u32(__u32 *val, const char *arg, int base) |
aba5acdf SH |
221 | { |
222 | unsigned long res; | |
223 | char *ptr; | |
224 | ||
225 | if (!arg || !*arg) | |
226 | return -1; | |
227 | res = strtoul(arg, &ptr, base); | |
697ac639 SH |
228 | |
229 | /* empty string or trailing non-digits */ | |
230 | if (!ptr || ptr == arg || *ptr) | |
231 | return -1; | |
232 | ||
233 | /* overflow */ | |
234 | if (res == ULONG_MAX && errno == ERANGE) | |
235 | return -1; | |
236 | ||
237 | /* in case UL > 32 bits */ | |
238 | if (res > 0xFFFFFFFFUL) | |
aba5acdf | 239 | return -1; |
697ac639 | 240 | |
aba5acdf SH |
241 | *val = res; |
242 | return 0; | |
243 | } | |
244 | ||
4094db72 | 245 | int get_u16(__u16 *val, const char *arg, int base) |
aba5acdf SH |
246 | { |
247 | unsigned long res; | |
248 | char *ptr; | |
249 | ||
250 | if (!arg || !*arg) | |
251 | return -1; | |
252 | res = strtoul(arg, &ptr, base); | |
697ac639 SH |
253 | |
254 | /* empty string or trailing non-digits */ | |
255 | if (!ptr || ptr == arg || *ptr) | |
256 | return -1; | |
257 | ||
258 | /* overflow */ | |
259 | if (res == ULONG_MAX && errno == ERANGE) | |
aba5acdf | 260 | return -1; |
697ac639 SH |
261 | |
262 | if (res > 0xFFFFUL) | |
263 | return -1; | |
264 | ||
aba5acdf SH |
265 | *val = res; |
266 | return 0; | |
267 | } | |
268 | ||
4094db72 | 269 | int get_u8(__u8 *val, const char *arg, int base) |
aba5acdf SH |
270 | { |
271 | unsigned long res; | |
272 | char *ptr; | |
273 | ||
274 | if (!arg || !*arg) | |
275 | return -1; | |
697ac639 | 276 | |
aba5acdf | 277 | res = strtoul(arg, &ptr, base); |
697ac639 SH |
278 | /* empty string or trailing non-digits */ |
279 | if (!ptr || ptr == arg || *ptr) | |
280 | return -1; | |
281 | ||
282 | /* overflow */ | |
283 | if (res == ULONG_MAX && errno == ERANGE) | |
aba5acdf | 284 | return -1; |
697ac639 SH |
285 | |
286 | if (res > 0xFFUL) | |
287 | return -1; | |
288 | ||
aba5acdf SH |
289 | *val = res; |
290 | return 0; | |
291 | } | |
292 | ||
30d10db5 HPP |
293 | int get_s32(__s32 *val, const char *arg, int base) |
294 | { | |
295 | long res; | |
296 | char *ptr; | |
297 | ||
298 | errno = 0; | |
299 | ||
300 | if (!arg || !*arg) | |
301 | return -1; | |
302 | res = strtol(arg, &ptr, base); | |
697ac639 SH |
303 | if (!ptr || ptr == arg || *ptr) |
304 | return -1; | |
305 | if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) | |
30d10db5 | 306 | return -1; |
697ac639 SH |
307 | if (res > INT32_MAX || res < INT32_MIN) |
308 | return -1; | |
309 | ||
30d10db5 HPP |
310 | *val = res; |
311 | return 0; | |
312 | } | |
313 | ||
4094db72 | 314 | int get_s16(__s16 *val, const char *arg, int base) |
aba5acdf SH |
315 | { |
316 | long res; | |
317 | char *ptr; | |
318 | ||
319 | if (!arg || !*arg) | |
320 | return -1; | |
321 | res = strtol(arg, &ptr, base); | |
697ac639 SH |
322 | if (!ptr || ptr == arg || *ptr) |
323 | return -1; | |
324 | if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) | |
325 | return -1; | |
326 | if (res > 0x7FFF || res < -0x8000) | |
aba5acdf | 327 | return -1; |
697ac639 | 328 | |
aba5acdf SH |
329 | *val = res; |
330 | return 0; | |
331 | } | |
332 | ||
4094db72 | 333 | int get_s8(__s8 *val, const char *arg, int base) |
aba5acdf SH |
334 | { |
335 | long res; | |
336 | char *ptr; | |
337 | ||
338 | if (!arg || !*arg) | |
339 | return -1; | |
340 | res = strtol(arg, &ptr, base); | |
697ac639 SH |
341 | if (!ptr || ptr == arg || *ptr) |
342 | return -1; | |
343 | if ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) | |
344 | return -1; | |
345 | if (res > 0x7F || res < -0x80) | |
aba5acdf SH |
346 | return -1; |
347 | *val = res; | |
348 | return 0; | |
349 | } | |
350 | ||
cafa6c8e SH |
351 | /* This uses a non-standard parsing (ie not inet_aton, or inet_pton) |
352 | * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8 | |
353 | */ | |
354 | static int get_addr_ipv4(__u8 *ap, const char *cp) | |
aba5acdf | 355 | { |
cafa6c8e SH |
356 | int i; |
357 | ||
358 | for (i = 0; i < 4; i++) { | |
359 | unsigned long n; | |
360 | char *endp; | |
361 | ||
362 | n = strtoul(cp, &endp, 0); | |
363 | if (n > 255) | |
364 | return -1; /* bogus network value */ | |
365 | ||
366 | if (endp == cp) /* no digits */ | |
367 | return -1; | |
94afda75 | 368 | |
cafa6c8e SH |
369 | ap[i] = n; |
370 | ||
371 | if (*endp == '\0') | |
372 | break; | |
373 | ||
374 | if (i == 3 || *endp != '.') | |
375 | return -1; /* extra characters */ | |
376 | cp = endp + 1; | |
377 | } | |
378 | ||
379 | return 1; | |
380 | } | |
381 | ||
382 | int get_addr_1(inet_prefix *addr, const char *name, int family) | |
383 | { | |
aba5acdf SH |
384 | memset(addr, 0, sizeof(*addr)); |
385 | ||
386 | if (strcmp(name, "default") == 0 || | |
387 | strcmp(name, "all") == 0 || | |
388 | strcmp(name, "any") == 0) { | |
389 | if (family == AF_DECnet) | |
390 | return -1; | |
391 | addr->family = family; | |
392 | addr->bytelen = (family == AF_INET6 ? 16 : 4); | |
393 | addr->bitlen = -1; | |
394 | return 0; | |
395 | } | |
396 | ||
397 | if (strchr(name, ':')) { | |
398 | addr->family = AF_INET6; | |
399 | if (family != AF_UNSPEC && family != AF_INET6) | |
400 | return -1; | |
401 | if (inet_pton(AF_INET6, name, addr->data) <= 0) | |
402 | return -1; | |
403 | addr->bytelen = 16; | |
404 | addr->bitlen = -1; | |
405 | return 0; | |
406 | } | |
407 | ||
408 | if (family == AF_DECnet) { | |
409 | struct dn_naddr dna; | |
410 | addr->family = AF_DECnet; | |
411 | if (dnet_pton(AF_DECnet, name, &dna) <= 0) | |
412 | return -1; | |
413 | memcpy(addr->data, dna.a_addr, 2); | |
414 | addr->bytelen = 2; | |
415 | addr->bitlen = -1; | |
416 | return 0; | |
417 | } | |
418 | ||
419 | addr->family = AF_INET; | |
420 | if (family != AF_UNSPEC && family != AF_INET) | |
421 | return -1; | |
94afda75 | 422 | |
cafa6c8e | 423 | if (get_addr_ipv4((__u8 *)addr->data, name) <= 0) |
516ffb6b | 424 | return -1; |
94afda75 | 425 | |
aba5acdf SH |
426 | addr->bytelen = 4; |
427 | addr->bitlen = -1; | |
aba5acdf SH |
428 | return 0; |
429 | } | |
430 | ||
fb9b1d0f | 431 | int get_prefix_1(inet_prefix *dst, char *arg, int family) |
aba5acdf SH |
432 | { |
433 | int err; | |
434 | unsigned plen; | |
435 | char *slash; | |
436 | ||
437 | memset(dst, 0, sizeof(*dst)); | |
438 | ||
439 | if (strcmp(arg, "default") == 0 || | |
440 | strcmp(arg, "any") == 0 || | |
441 | strcmp(arg, "all") == 0) { | |
442 | if (family == AF_DECnet) | |
443 | return -1; | |
444 | dst->family = family; | |
445 | dst->bytelen = 0; | |
446 | dst->bitlen = 0; | |
447 | return 0; | |
448 | } | |
449 | ||
450 | slash = strchr(arg, '/'); | |
451 | if (slash) | |
452 | *slash = 0; | |
fb9b1d0f | 453 | |
aba5acdf SH |
454 | err = get_addr_1(dst, arg, family); |
455 | if (err == 0) { | |
456 | switch(dst->family) { | |
656111b2 SH |
457 | case AF_INET6: |
458 | dst->bitlen = 128; | |
459 | break; | |
460 | case AF_DECnet: | |
461 | dst->bitlen = 16; | |
462 | break; | |
463 | default: | |
464 | case AF_INET: | |
465 | dst->bitlen = 32; | |
aba5acdf SH |
466 | } |
467 | if (slash) { | |
5a0d1cbf | 468 | if (get_netmask(&plen, slash+1, 0) |
656111b2 | 469 | || plen > dst->bitlen) { |
aba5acdf SH |
470 | err = -1; |
471 | goto done; | |
472 | } | |
f082b64f | 473 | dst->flags |= PREFIXLEN_SPECIFIED; |
aba5acdf SH |
474 | dst->bitlen = plen; |
475 | } | |
476 | } | |
477 | done: | |
478 | if (slash) | |
479 | *slash = '/'; | |
480 | return err; | |
481 | } | |
482 | ||
c7699875 | 483 | int get_addr(inet_prefix *dst, const char *arg, int family) |
aba5acdf SH |
484 | { |
485 | if (family == AF_PACKET) { | |
486 | fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg); | |
487 | exit(1); | |
488 | } | |
489 | if (get_addr_1(dst, arg, family)) { | |
490 | fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg); | |
491 | exit(1); | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
fb9b1d0f | 496 | int get_prefix(inet_prefix *dst, char *arg, int family) |
aba5acdf SH |
497 | { |
498 | if (family == AF_PACKET) { | |
499 | fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg); | |
500 | exit(1); | |
501 | } | |
502 | if (get_prefix_1(dst, arg, family)) { | |
503 | fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg); | |
504 | exit(1); | |
505 | } | |
506 | return 0; | |
507 | } | |
508 | ||
c7699875 | 509 | __u32 get_addr32(const char *name) |
aba5acdf SH |
510 | { |
511 | inet_prefix addr; | |
512 | if (get_addr_1(&addr, name, AF_INET)) { | |
513 | fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name); | |
514 | exit(1); | |
515 | } | |
516 | return addr.data[0]; | |
517 | } | |
518 | ||
4094db72 | 519 | void incomplete_command(void) |
aba5acdf SH |
520 | { |
521 | fprintf(stderr, "Command line is not complete. Try option \"help\"\n"); | |
522 | exit(-1); | |
523 | } | |
524 | ||
c7699875 | 525 | void missarg(const char *key) |
526 | { | |
527 | fprintf(stderr, "Error: argument \"%s\" is required\n", key); | |
528 | exit(-1); | |
529 | } | |
530 | ||
4094db72 | 531 | void invarg(const char *msg, const char *arg) |
aba5acdf SH |
532 | { |
533 | fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg); | |
534 | exit(-1); | |
535 | } | |
536 | ||
4094db72 | 537 | void duparg(const char *key, const char *arg) |
aba5acdf SH |
538 | { |
539 | fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg); | |
540 | exit(-1); | |
541 | } | |
542 | ||
4094db72 | 543 | void duparg2(const char *key, const char *arg) |
aba5acdf SH |
544 | { |
545 | fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg); | |
546 | exit(-1); | |
547 | } | |
548 | ||
4094db72 | 549 | int matches(const char *cmd, const char *pattern) |
aba5acdf SH |
550 | { |
551 | int len = strlen(cmd); | |
552 | if (len > strlen(pattern)) | |
553 | return -1; | |
554 | return memcmp(pattern, cmd, len); | |
555 | } | |
556 | ||
4094db72 | 557 | int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits) |
aba5acdf | 558 | { |
9626dfd5 SH |
559 | const __u32 *a1 = a->data; |
560 | const __u32 *a2 = b->data; | |
aba5acdf SH |
561 | int words = bits >> 0x05; |
562 | ||
563 | bits &= 0x1f; | |
564 | ||
565 | if (words) | |
566 | if (memcmp(a1, a2, words << 2)) | |
567 | return -1; | |
568 | ||
569 | if (bits) { | |
570 | __u32 w1, w2; | |
571 | __u32 mask; | |
572 | ||
573 | w1 = a1[words]; | |
574 | w2 = a2[words]; | |
575 | ||
576 | mask = htonl((0xffffffff) << (0x20 - bits)); | |
577 | ||
578 | if ((w1 ^ w2) & mask) | |
579 | return 1; | |
580 | } | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | int __iproute2_hz_internal; | |
586 | ||
587 | int __get_hz(void) | |
588 | { | |
589 | char name[1024]; | |
590 | int hz = 0; | |
591 | FILE *fp; | |
592 | ||
593 | if (getenv("HZ")) | |
594 | return atoi(getenv("HZ")) ? : HZ; | |
595 | ||
596 | if (getenv("PROC_NET_PSCHED")) { | |
597 | snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED")); | |
c7699875 | 598 | } else if (getenv("PROC_ROOT")) { |
aba5acdf SH |
599 | snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT")); |
600 | } else { | |
601 | strcpy(name, "/proc/net/psched"); | |
602 | } | |
603 | fp = fopen(name, "r"); | |
604 | ||
605 | if (fp) { | |
606 | unsigned nom, denom; | |
607 | if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2) | |
608 | if (nom == 1000000) | |
609 | hz = denom; | |
610 | fclose(fp); | |
611 | } | |
612 | if (hz) | |
613 | return hz; | |
614 | return HZ; | |
615 | } | |
616 | ||
5e8bc631 | 617 | int __iproute2_user_hz_internal; |
618 | ||
619 | int __get_user_hz(void) | |
620 | { | |
621 | return sysconf(_SC_CLK_TCK); | |
622 | } | |
623 | ||
656111b2 | 624 | const char *rt_addr_n2a(int af, const void *addr, char *buf, int buflen) |
aba5acdf SH |
625 | { |
626 | switch (af) { | |
627 | case AF_INET: | |
628 | case AF_INET6: | |
629 | return inet_ntop(af, addr, buf, buflen); | |
630 | case AF_IPX: | |
631 | return ipx_ntop(af, addr, buf, buflen); | |
632 | case AF_DECnet: | |
633 | { | |
634 | struct dn_naddr dna = { 2, { 0, 0, }}; | |
635 | memcpy(dna.a_addr, addr, 2); | |
636 | return dnet_ntop(af, &dna, buf, buflen); | |
637 | } | |
638 | default: | |
639 | return "???"; | |
640 | } | |
641 | } | |
642 | ||
643 | #ifdef RESOLVE_HOSTNAMES | |
644 | struct namerec | |
645 | { | |
646 | struct namerec *next; | |
7dec1bf8 | 647 | const char *name; |
aba5acdf | 648 | inet_prefix addr; |
aba5acdf SH |
649 | }; |
650 | ||
7dec1bf8 SH |
651 | #define NHASH 257 |
652 | static struct namerec *nht[NHASH]; | |
aba5acdf | 653 | |
7dec1bf8 | 654 | static const char *resolve_address(const void *addr, int len, int af) |
aba5acdf SH |
655 | { |
656 | struct namerec *n; | |
657 | struct hostent *h_ent; | |
658 | unsigned hash; | |
659 | static int notfirst; | |
660 | ||
661 | ||
662 | if (af == AF_INET6 && ((__u32*)addr)[0] == 0 && | |
663 | ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) { | |
664 | af = AF_INET; | |
665 | addr += 12; | |
666 | len = 4; | |
667 | } | |
668 | ||
7dec1bf8 | 669 | hash = *(__u32 *)(addr + len - 4) % NHASH; |
aba5acdf SH |
670 | |
671 | for (n = nht[hash]; n; n = n->next) { | |
672 | if (n->addr.family == af && | |
673 | n->addr.bytelen == len && | |
674 | memcmp(n->addr.data, addr, len) == 0) | |
675 | return n->name; | |
676 | } | |
677 | if ((n = malloc(sizeof(*n))) == NULL) | |
678 | return NULL; | |
679 | n->addr.family = af; | |
680 | n->addr.bytelen = len; | |
681 | n->name = NULL; | |
682 | memcpy(n->addr.data, addr, len); | |
683 | n->next = nht[hash]; | |
684 | nht[hash] = n; | |
685 | if (++notfirst == 1) | |
686 | sethostent(1); | |
687 | fflush(stdout); | |
688 | ||
c7699875 | 689 | if ((h_ent = gethostbyaddr(addr, len, af)) != NULL) |
aba5acdf SH |
690 | n->name = strdup(h_ent->h_name); |
691 | ||
692 | /* Even if we fail, "negative" entry is remembered. */ | |
693 | return n->name; | |
694 | } | |
695 | #endif | |
696 | ||
697 | ||
c7699875 | 698 | const char *format_host(int af, int len, const void *addr, |
4094db72 | 699 | char *buf, int buflen) |
aba5acdf SH |
700 | { |
701 | #ifdef RESOLVE_HOSTNAMES | |
702 | if (resolve_hosts) { | |
7dec1bf8 SH |
703 | const char *n; |
704 | ||
aba5acdf SH |
705 | if (len <= 0) { |
706 | switch (af) { | |
707 | case AF_INET: | |
708 | len = 4; | |
709 | break; | |
710 | case AF_INET6: | |
711 | len = 16; | |
712 | break; | |
713 | case AF_IPX: | |
714 | len = 10; | |
715 | break; | |
716 | #ifdef AF_DECnet | |
717 | /* I see no reasons why gethostbyname | |
718 | may not work for DECnet */ | |
719 | case AF_DECnet: | |
720 | len = 2; | |
721 | break; | |
722 | #endif | |
723 | default: ; | |
724 | } | |
725 | } | |
726 | if (len > 0 && | |
727 | (n = resolve_address(addr, len, af)) != NULL) | |
728 | return n; | |
729 | } | |
730 | #endif | |
656111b2 | 731 | return rt_addr_n2a(af, addr, buf, buflen); |
aba5acdf SH |
732 | } |
733 | ||
734 | ||
f332d169 | 735 | char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen) |
aba5acdf | 736 | { |
f332d169 | 737 | char *ptr = buf; |
aba5acdf SH |
738 | int i; |
739 | ||
740 | for (i=0; i<len; i++) { | |
741 | if (blen < 3) | |
742 | break; | |
743 | sprintf(ptr, "%02x", str[i]); | |
744 | ptr += 2; | |
745 | blen -= 2; | |
aba5acdf SH |
746 | } |
747 | return buf; | |
748 | } | |
749 | ||
f332d169 | 750 | __u8* hexstring_a2n(const char *str, __u8 *buf, int blen) |
aba5acdf SH |
751 | { |
752 | int cnt = 0; | |
316c2346 | 753 | char *endptr; |
aba5acdf | 754 | |
316c2346 JP |
755 | if (strlen(str) % 2) |
756 | return NULL; | |
757 | while (cnt < blen && strlen(str) > 1) { | |
758 | unsigned int tmp; | |
759 | char tmpstr[3]; | |
760 | ||
761 | strncpy(tmpstr, str, 2); | |
762 | tmpstr[2] = '\0'; | |
763 | tmp = strtoul(tmpstr, &endptr, 16); | |
764 | if (errno != 0 || tmp > 0xFF || *endptr != '\0') | |
aba5acdf | 765 | return NULL; |
316c2346 JP |
766 | buf[cnt++] = tmp; |
767 | str += 2; | |
aba5acdf | 768 | } |
aba5acdf SH |
769 | return buf; |
770 | } | |
90f93024 SH |
771 | |
772 | int print_timestamp(FILE *fp) | |
773 | { | |
774 | struct timeval tv; | |
775 | char *tstr; | |
776 | ||
777 | memset(&tv, 0, sizeof(tv)); | |
778 | gettimeofday(&tv, NULL); | |
779 | ||
780 | tstr = asctime(localtime(&tv.tv_sec)); | |
781 | tstr[strlen(tstr)-1] = 0; | |
c083d99d | 782 | fprintf(fp, "Timestamp: %s %ld usec\n", tstr, (long)tv.tv_usec); |
90f93024 SH |
783 | return 0; |
784 | } | |
351efcde SH |
785 | |
786 | int cmdlineno; | |
787 | ||
788 | /* Like glibc getline but handle continuation lines and comments */ | |
d21e8835 | 789 | ssize_t getcmdline(char **linep, size_t *lenp, FILE *in) |
351efcde | 790 | { |
d21e8835 | 791 | ssize_t cc; |
351efcde | 792 | char *cp; |
ae665a52 | 793 | |
351efcde SH |
794 | if ((cc = getline(linep, lenp, in)) < 0) |
795 | return cc; /* eof or error */ | |
796 | ++cmdlineno; | |
797 | ||
798 | cp = strchr(*linep, '#'); | |
ae665a52 | 799 | if (cp) |
351efcde | 800 | *cp = '\0'; |
ae665a52 | 801 | |
351efcde SH |
802 | while ((cp = strstr(*linep, "\\\n")) != NULL) { |
803 | char *line1 = NULL; | |
804 | size_t len1 = 0; | |
21a85d3b | 805 | ssize_t cc1; |
351efcde SH |
806 | |
807 | if ((cc1 = getline(&line1, &len1, in)) < 0) { | |
808 | fprintf(stderr, "Missing continuation line\n"); | |
809 | return cc1; | |
810 | } | |
811 | ||
812 | ++cmdlineno; | |
813 | *cp = 0; | |
814 | ||
815 | cp = strchr(line1, '#'); | |
ae665a52 | 816 | if (cp) |
351efcde SH |
817 | *cp = '\0'; |
818 | ||
d21e8835 AH |
819 | *lenp = strlen(*linep) + strlen(line1) + 1; |
820 | *linep = realloc(*linep, *lenp); | |
351efcde SH |
821 | if (!*linep) { |
822 | fprintf(stderr, "Out of memory\n"); | |
d21e8835 | 823 | *lenp = 0; |
351efcde SH |
824 | return -1; |
825 | } | |
826 | cc += cc1 - 2; | |
827 | strcat(*linep, line1); | |
828 | free(line1); | |
829 | } | |
830 | return cc; | |
831 | } | |
832 | ||
833 | /* split command line into argument vector */ | |
834 | int makeargs(char *line, char *argv[], int maxargs) | |
835 | { | |
836 | static const char ws[] = " \t\r\n"; | |
837 | char *cp; | |
838 | int argc = 0; | |
839 | ||
840 | for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) { | |
841 | if (argc >= (maxargs - 1)) { | |
842 | fprintf(stderr, "Too many arguments to command\n"); | |
843 | exit(1); | |
844 | } | |
845 | argv[argc++] = cp; | |
846 | } | |
847 | argv[argc] = NULL; | |
848 | ||
849 | return argc; | |
850 | } | |
aa574cd6 WC |
851 | |
852 | int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6) | |
853 | { | |
854 | if (strchr(src, ':')) | |
855 | return inet_pton(AF_INET6, src, dst6); | |
856 | else | |
857 | return inet_pton(AF_INET, src, dst); | |
858 | } |