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>
32 int get_integer(int *val, const char *arg, int base)
39 res = strtol(arg, &ptr, base);
40 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
46 int mask2bits(__u32 netmask)
49 __u32 mask = ntohl(netmask);
52 /* a valid netmask must be 2^n - 1 */
53 if ((host & (host + 1)) != 0)
56 for (; mask; mask <<= 1)
61 static int get_netmask(unsigned *val, const char *arg, int base)
65 if (!get_unsigned(val, arg, base))
68 /* try coverting dotted quad to CIDR */
69 if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) {
70 int b = mask2bits(addr.data[0]);
81 int get_unsigned(unsigned *val, const char *arg, int base)
88 res = strtoul(arg, &ptr, base);
89 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
96 * get_jiffies is "translated" from a similar routine "get_time" in
97 * tc_util.c. we don't use the exact same routine because tc passes
98 * microseconds to the kernel and the callers of get_jiffies want
99 * to pass jiffies, and have a different assumption for the units of
103 int get_jiffies(unsigned *jiffies, const char *arg, int base, int *raw)
109 if (strchr(arg,'.') != NULL) {
115 res = strtoul(arg,&p,base);
123 if (__iproute2_hz_internal == 0)
124 __iproute2_hz_internal = __get_hz();
130 if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
131 strcasecmp(p, "secs")==0)
132 t *= __iproute2_hz_internal;
133 else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
134 strcasecmp(p, "msecs") == 0)
135 t *= __iproute2_hz_internal/1000.0;
136 else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 ||
137 strcasecmp(p, "usecs") == 0)
138 t *= __iproute2_hz_internal/1000000.0;
139 else if (strcasecmp(p, "ns") == 0 || strcasecmp(p, "nsec")==0 ||
140 strcasecmp(p, "nsecs") == 0)
141 t *= __iproute2_hz_internal/1000000000.0;
142 else if (strcasecmp(p, "j") == 0 || strcasecmp(p, "hz") == 0 ||
143 strcasecmp(p,"jiffies") == 0)
144 t *= 1.0; /* allow suffix, do nothing */
149 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
159 int get_u64(__u64 *val, const char *arg, int base)
161 unsigned long long res;
166 res = strtoull(arg, &ptr, base);
167 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
173 int get_u32(__u32 *val, const char *arg, int base)
180 res = strtoul(arg, &ptr, base);
181 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
187 int get_u16(__u16 *val, const char *arg, int base)
194 res = strtoul(arg, &ptr, base);
195 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
201 int get_u8(__u8 *val, const char *arg, int base)
208 res = strtoul(arg, &ptr, base);
209 if (!ptr || ptr == arg || *ptr || res > 0xFF)
215 int get_s16(__s16 *val, const char *arg, int base)
222 res = strtol(arg, &ptr, base);
223 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
229 int get_s8(__s8 *val, const char *arg, int base)
236 res = strtol(arg, &ptr, base);
237 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
243 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
244 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
246 static int get_addr_ipv4(__u8 *ap, const char *cp)
250 for (i = 0; i < 4; i++) {
254 n = strtoul(cp, &endp, 0);
256 return -1; /* bogus network value */
258 if (endp == cp) /* no digits */
266 if (i == 3 || *endp != '.')
267 return -1; /* extra characters */
274 int get_addr_1(inet_prefix *addr, const char *name, int family)
276 memset(addr, 0, sizeof(*addr));
278 if (strcmp(name, "default") == 0 ||
279 strcmp(name, "all") == 0 ||
280 strcmp(name, "any") == 0) {
281 if (family == AF_DECnet)
283 addr->family = family;
284 addr->bytelen = (family == AF_INET6 ? 16 : 4);
289 if (strchr(name, ':')) {
290 addr->family = AF_INET6;
291 if (family != AF_UNSPEC && family != AF_INET6)
293 if (inet_pton(AF_INET6, name, addr->data) <= 0)
300 if (family == AF_DECnet) {
302 addr->family = AF_DECnet;
303 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
305 memcpy(addr->data, dna.a_addr, 2);
311 addr->family = AF_INET;
312 if (family != AF_UNSPEC && family != AF_INET)
315 if (get_addr_ipv4((__u8 *)addr->data, name) <= 0)
323 int get_prefix_1(inet_prefix *dst, char *arg, int family)
329 memset(dst, 0, sizeof(*dst));
331 if (strcmp(arg, "default") == 0 ||
332 strcmp(arg, "any") == 0 ||
333 strcmp(arg, "all") == 0) {
334 if (family == AF_DECnet)
336 dst->family = family;
342 slash = strchr(arg, '/');
346 err = get_addr_1(dst, arg, family);
348 switch(dst->family) {
360 if (get_netmask(&plen, slash+1, 0)
361 || plen > dst->bitlen) {
365 dst->flags |= PREFIXLEN_SPECIFIED;
375 int get_addr(inet_prefix *dst, const char *arg, int family)
377 if (family == AF_PACKET) {
378 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
381 if (get_addr_1(dst, arg, family)) {
382 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
388 int get_prefix(inet_prefix *dst, char *arg, int family)
390 if (family == AF_PACKET) {
391 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
394 if (get_prefix_1(dst, arg, family)) {
395 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
401 __u32 get_addr32(const char *name)
404 if (get_addr_1(&addr, name, AF_INET)) {
405 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
411 void incomplete_command(void)
413 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
417 void missarg(const char *key)
419 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
423 void invarg(const char *msg, const char *arg)
425 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
429 void duparg(const char *key, const char *arg)
431 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
435 void duparg2(const char *key, const char *arg)
437 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
441 int matches(const char *cmd, const char *pattern)
443 int len = strlen(cmd);
444 if (len > strlen(pattern))
446 return memcmp(pattern, cmd, len);
449 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
451 const __u32 *a1 = a->data;
452 const __u32 *a2 = b->data;
453 int words = bits >> 0x05;
458 if (memcmp(a1, a2, words << 2))
468 mask = htonl((0xffffffff) << (0x20 - bits));
470 if ((w1 ^ w2) & mask)
477 int __iproute2_hz_internal;
486 return atoi(getenv("HZ")) ? : HZ;
488 if (getenv("PROC_NET_PSCHED")) {
489 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
490 } else if (getenv("PROC_ROOT")) {
491 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
493 strcpy(name, "/proc/net/psched");
495 fp = fopen(name, "r");
499 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
509 int __iproute2_user_hz_internal;
511 int __get_user_hz(void)
513 return sysconf(_SC_CLK_TCK);
516 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
521 return inet_ntop(af, addr, buf, buflen);
523 return ipx_ntop(af, addr, buf, buflen);
526 struct dn_naddr dna = { 2, { 0, 0, }};
527 memcpy(dna.a_addr, addr, 2);
528 return dnet_ntop(af, &dna, buf, buflen);
535 #ifdef RESOLVE_HOSTNAMES
538 struct namerec *next;
544 static struct namerec *nht[NHASH];
546 static const char *resolve_address(const void *addr, int len, int af)
549 struct hostent *h_ent;
554 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
555 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
561 hash = *(__u32 *)(addr + len - 4) % NHASH;
563 for (n = nht[hash]; n; n = n->next) {
564 if (n->addr.family == af &&
565 n->addr.bytelen == len &&
566 memcmp(n->addr.data, addr, len) == 0)
569 if ((n = malloc(sizeof(*n))) == NULL)
572 n->addr.bytelen = len;
574 memcpy(n->addr.data, addr, len);
581 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
582 n->name = strdup(h_ent->h_name);
584 /* Even if we fail, "negative" entry is remembered. */
590 const char *format_host(int af, int len, const void *addr,
591 char *buf, int buflen)
593 #ifdef RESOLVE_HOSTNAMES
609 /* I see no reasons why gethostbyname
610 may not work for DECnet */
619 (n = resolve_address(addr, len, af)) != NULL)
623 return rt_addr_n2a(af, len, addr, buf, buflen);
627 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen)
632 for (i=0; i<len; i++) {
635 sprintf(ptr, "%02x", str[i]);
638 if (i != len-1 && blen > 1) {
646 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
656 while ((ch = *str) != ':' && ch != 0) {
657 if (ch >= '0' && ch <= '9')
659 else if (ch >= 'a' && ch <= 'f')
661 else if (ch >= 'A' && ch <= 'F')
680 memset(buf+cnt, 0, blen-cnt);
684 int print_timestamp(FILE *fp)
689 memset(&tv, 0, sizeof(tv));
690 gettimeofday(&tv, NULL);
692 tstr = asctime(localtime(&tv.tv_sec));
693 tstr[strlen(tstr)-1] = 0;
694 fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
700 /* Like glibc getline but handle continuation lines and comments */
701 ssize_t getcmdline(char **linep, size_t *lenp, FILE *in)
706 if ((cc = getline(linep, lenp, in)) < 0)
707 return cc; /* eof or error */
710 cp = strchr(*linep, '#');
714 while ((cp = strstr(*linep, "\\\n")) != NULL) {
719 if ((cc1 = getline(&line1, &len1, in)) < 0) {
720 fprintf(stderr, "Missing continuation line\n");
727 cp = strchr(line1, '#');
731 *lenp = strlen(*linep) + strlen(line1) + 1;
732 *linep = realloc(*linep, *lenp);
734 fprintf(stderr, "Out of memory\n");
739 strcat(*linep, line1);
745 /* split command line into argument vector */
746 int makeargs(char *line, char *argv[], int maxargs)
748 static const char ws[] = " \t\r\n";
752 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
753 if (argc >= (maxargs - 1)) {
754 fprintf(stderr, "Too many arguments to command\n");