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.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
22 #include <arpa/inet.h>
24 #include <asm/types.h>
25 #include <linux/pkt_sched.h>
33 int get_integer(int *val, const char *arg, int base)
40 res = strtol(arg, &ptr, base);
41 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
47 int mask2bits(__u32 netmask)
50 __u32 mask = ntohl(netmask);
53 /* a valid netmask must be 2^n - 1 */
54 if ((host & (host + 1)) != 0)
57 for (; mask; mask <<= 1)
62 static int get_netmask(unsigned *val, const char *arg, int base)
66 if (!get_unsigned(val, arg, base))
69 /* try coverting dotted quad to CIDR */
70 if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) {
71 int b = mask2bits(addr.data[0]);
82 int get_unsigned(unsigned *val, const char *arg, int base)
89 res = strtoul(arg, &ptr, base);
90 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
97 * get_time_rtt is "translated" from a similar routine "get_time" in
98 * tc_util.c. We don't use the exact same routine because tc passes
99 * microseconds to the kernel and the callers of get_time_rtt want to
100 * pass milliseconds (standard unit for rtt values since 2.6.27), and
101 * have a different assumption for the units of a "raw" number.
103 int get_time_rtt(unsigned *val, const char *arg, int *raw)
109 if (strchr(arg,'.') != NULL) {
115 res = strtoul(arg, &p, 0);
126 if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
127 strcasecmp(p, "secs")==0)
129 else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
130 strcasecmp(p, "msecs") == 0)
131 t *= 1.0; /* allow suffix, do nothing */
136 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
146 int get_u64(__u64 *val, const char *arg, int base)
148 unsigned long long res;
153 res = strtoull(arg, &ptr, base);
154 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
160 int get_u32(__u32 *val, const char *arg, int base)
167 res = strtoul(arg, &ptr, base);
168 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
174 int get_u16(__u16 *val, const char *arg, int base)
181 res = strtoul(arg, &ptr, base);
182 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
188 int get_u8(__u8 *val, const char *arg, int base)
195 res = strtoul(arg, &ptr, base);
196 if (!ptr || ptr == arg || *ptr || res > 0xFF)
202 int get_s32(__s32 *val, const char *arg, int base)
211 res = strtol(arg, &ptr, base);
212 if (ptr == arg || *ptr ||
213 ((res == LONG_MIN || res == LONG_MAX) && errno == ERANGE) ||
214 res > INT32_MAX || res < INT32_MIN)
220 int get_s16(__s16 *val, const char *arg, int base)
227 res = strtol(arg, &ptr, base);
228 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
234 int get_s8(__s8 *val, const char *arg, int base)
241 res = strtol(arg, &ptr, base);
242 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
248 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
249 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
251 static int get_addr_ipv4(__u8 *ap, const char *cp)
255 for (i = 0; i < 4; i++) {
259 n = strtoul(cp, &endp, 0);
261 return -1; /* bogus network value */
263 if (endp == cp) /* no digits */
271 if (i == 3 || *endp != '.')
272 return -1; /* extra characters */
279 int get_addr_1(inet_prefix *addr, const char *name, int family)
281 memset(addr, 0, sizeof(*addr));
283 if (strcmp(name, "default") == 0 ||
284 strcmp(name, "all") == 0 ||
285 strcmp(name, "any") == 0) {
286 if (family == AF_DECnet)
288 addr->family = family;
289 addr->bytelen = (family == AF_INET6 ? 16 : 4);
294 if (strchr(name, ':')) {
295 addr->family = AF_INET6;
296 if (family != AF_UNSPEC && family != AF_INET6)
298 if (inet_pton(AF_INET6, name, addr->data) <= 0)
305 if (family == AF_DECnet) {
307 addr->family = AF_DECnet;
308 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
310 memcpy(addr->data, dna.a_addr, 2);
316 addr->family = AF_INET;
317 if (family != AF_UNSPEC && family != AF_INET)
320 if (get_addr_ipv4((__u8 *)addr->data, name) <= 0)
328 int get_prefix_1(inet_prefix *dst, char *arg, int family)
334 memset(dst, 0, sizeof(*dst));
336 if (strcmp(arg, "default") == 0 ||
337 strcmp(arg, "any") == 0 ||
338 strcmp(arg, "all") == 0) {
339 if (family == AF_DECnet)
341 dst->family = family;
347 slash = strchr(arg, '/');
351 err = get_addr_1(dst, arg, family);
353 switch(dst->family) {
365 if (get_netmask(&plen, slash+1, 0)
366 || plen > dst->bitlen) {
370 dst->flags |= PREFIXLEN_SPECIFIED;
380 int get_addr(inet_prefix *dst, const char *arg, int family)
382 if (family == AF_PACKET) {
383 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
386 if (get_addr_1(dst, arg, family)) {
387 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
393 int get_prefix(inet_prefix *dst, char *arg, int family)
395 if (family == AF_PACKET) {
396 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
399 if (get_prefix_1(dst, arg, family)) {
400 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
406 __u32 get_addr32(const char *name)
409 if (get_addr_1(&addr, name, AF_INET)) {
410 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
416 void incomplete_command(void)
418 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
422 void missarg(const char *key)
424 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
428 void invarg(const char *msg, const char *arg)
430 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
434 void duparg(const char *key, const char *arg)
436 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
440 void duparg2(const char *key, const char *arg)
442 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
446 int matches(const char *cmd, const char *pattern)
448 int len = strlen(cmd);
449 if (len > strlen(pattern))
451 return memcmp(pattern, cmd, len);
454 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
456 const __u32 *a1 = a->data;
457 const __u32 *a2 = b->data;
458 int words = bits >> 0x05;
463 if (memcmp(a1, a2, words << 2))
473 mask = htonl((0xffffffff) << (0x20 - bits));
475 if ((w1 ^ w2) & mask)
482 int __iproute2_hz_internal;
491 return atoi(getenv("HZ")) ? : HZ;
493 if (getenv("PROC_NET_PSCHED")) {
494 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
495 } else if (getenv("PROC_ROOT")) {
496 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
498 strcpy(name, "/proc/net/psched");
500 fp = fopen(name, "r");
504 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
514 int __iproute2_user_hz_internal;
516 int __get_user_hz(void)
518 return sysconf(_SC_CLK_TCK);
521 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
526 return inet_ntop(af, addr, buf, buflen);
528 return ipx_ntop(af, addr, buf, buflen);
531 struct dn_naddr dna = { 2, { 0, 0, }};
532 memcpy(dna.a_addr, addr, 2);
533 return dnet_ntop(af, &dna, buf, buflen);
540 #ifdef RESOLVE_HOSTNAMES
543 struct namerec *next;
549 static struct namerec *nht[NHASH];
551 static const char *resolve_address(const void *addr, int len, int af)
554 struct hostent *h_ent;
559 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
560 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
566 hash = *(__u32 *)(addr + len - 4) % NHASH;
568 for (n = nht[hash]; n; n = n->next) {
569 if (n->addr.family == af &&
570 n->addr.bytelen == len &&
571 memcmp(n->addr.data, addr, len) == 0)
574 if ((n = malloc(sizeof(*n))) == NULL)
577 n->addr.bytelen = len;
579 memcpy(n->addr.data, addr, len);
586 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
587 n->name = strdup(h_ent->h_name);
589 /* Even if we fail, "negative" entry is remembered. */
595 const char *format_host(int af, int len, const void *addr,
596 char *buf, int buflen)
598 #ifdef RESOLVE_HOSTNAMES
614 /* I see no reasons why gethostbyname
615 may not work for DECnet */
624 (n = resolve_address(addr, len, af)) != NULL)
628 return rt_addr_n2a(af, len, addr, buf, buflen);
632 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen)
637 for (i=0; i<len; i++) {
640 sprintf(ptr, "%02x", str[i]);
643 if (i != len-1 && blen > 1) {
651 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
661 while ((ch = *str) != ':' && ch != 0) {
662 if (ch >= '0' && ch <= '9')
664 else if (ch >= 'a' && ch <= 'f')
666 else if (ch >= 'A' && ch <= 'F')
685 memset(buf+cnt, 0, blen-cnt);
689 int print_timestamp(FILE *fp)
694 memset(&tv, 0, sizeof(tv));
695 gettimeofday(&tv, NULL);
697 tstr = asctime(localtime(&tv.tv_sec));
698 tstr[strlen(tstr)-1] = 0;
699 fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
705 /* Like glibc getline but handle continuation lines and comments */
706 ssize_t getcmdline(char **linep, size_t *lenp, FILE *in)
711 if ((cc = getline(linep, lenp, in)) < 0)
712 return cc; /* eof or error */
715 cp = strchr(*linep, '#');
719 while ((cp = strstr(*linep, "\\\n")) != NULL) {
724 if ((cc1 = getline(&line1, &len1, in)) < 0) {
725 fprintf(stderr, "Missing continuation line\n");
732 cp = strchr(line1, '#');
736 *lenp = strlen(*linep) + strlen(line1) + 1;
737 *linep = realloc(*linep, *lenp);
739 fprintf(stderr, "Out of memory\n");
744 strcat(*linep, line1);
750 /* split command line into argument vector */
751 int makeargs(char *line, char *argv[], int maxargs)
753 static const char ws[] = " \t\r\n";
757 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
758 if (argc >= (maxargs - 1)) {
759 fprintf(stderr, "Too many arguments to command\n");