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>
14 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
22 #include <sys/socket.h>
23 #include <netinet/in.h>
26 #include <arpa/inet.h>
28 #include <asm/types.h>
29 #include <linux/pkt_sched.h>
36 int get_integer(int *val, const char *arg, int base)
43 res = strtol(arg, &ptr, base);
44 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
50 int mask2bits(__u32 netmask)
53 __u32 mask = ntohl(netmask);
56 /* a valid netmask must be 2^n - 1 */
57 if ((host & (host + 1)) != 0)
60 for (; mask; mask <<= 1)
65 static int get_netmask(unsigned *val, const char *arg, int base)
69 if (!get_unsigned(val, arg, base))
72 /* try coverting dotted quad to CIDR */
73 if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) {
74 int b = mask2bits(addr.data[0]);
85 int get_unsigned(unsigned *val, const char *arg, int base)
92 res = strtoul(arg, &ptr, base);
93 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
100 * get_jiffies is "translated" from a similar routine "get_time" in
101 * tc_util.c. we don't use the exact same routine because tc passes
102 * microseconds to the kernel and the callers of get_jiffies want
103 * to pass jiffies, and have a different assumption for the units of
107 int get_jiffies(unsigned *jiffies, const char *arg, int base, int *raw)
113 if (strchr(arg,'.') != NULL) {
119 res = strtoul(arg,&p,base);
127 if (__iproute2_hz_internal == 0)
128 __iproute2_hz_internal = __get_hz();
134 if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
135 strcasecmp(p, "secs")==0)
136 t *= __iproute2_hz_internal;
137 else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
138 strcasecmp(p, "msecs") == 0)
139 t *= __iproute2_hz_internal/1000.0;
140 else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 ||
141 strcasecmp(p, "usecs") == 0)
142 t *= __iproute2_hz_internal/1000000.0;
143 else if (strcasecmp(p, "ns") == 0 || strcasecmp(p, "nsec")==0 ||
144 strcasecmp(p, "nsecs") == 0)
145 t *= __iproute2_hz_internal/1000000000.0;
146 else if (strcasecmp(p, "j") == 0 || strcasecmp(p, "hz") == 0 ||
147 strcasecmp(p,"jiffies") == 0)
148 t *= 1.0; /* allow suffix, do nothing */
153 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
163 int get_u64(__u64 *val, const char *arg, int base)
165 unsigned long long res;
170 res = strtoull(arg, &ptr, base);
171 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
177 int get_u32(__u32 *val, const char *arg, int base)
184 res = strtoul(arg, &ptr, base);
185 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
191 int get_u16(__u16 *val, const char *arg, int base)
198 res = strtoul(arg, &ptr, base);
199 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
205 int get_u8(__u8 *val, const char *arg, int base)
212 res = strtoul(arg, &ptr, base);
213 if (!ptr || ptr == arg || *ptr || res > 0xFF)
219 int get_s16(__s16 *val, const char *arg, int base)
226 res = strtol(arg, &ptr, base);
227 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
233 int get_s8(__s8 *val, const char *arg, int base)
240 res = strtol(arg, &ptr, base);
241 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
247 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
248 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
250 static int get_addr_ipv4(__u8 *ap, const char *cp)
254 for (i = 0; i < 4; i++) {
258 n = strtoul(cp, &endp, 0);
260 return -1; /* bogus network value */
262 if (endp == cp) /* no digits */
270 if (i == 3 || *endp != '.')
271 return -1; /* extra characters */
278 int get_addr_1(inet_prefix *addr, const char *name, int family)
280 memset(addr, 0, sizeof(*addr));
282 if (strcmp(name, "default") == 0 ||
283 strcmp(name, "all") == 0 ||
284 strcmp(name, "any") == 0) {
285 if (family == AF_DECnet)
287 addr->family = family;
288 addr->bytelen = (family == AF_INET6 ? 16 : 4);
293 if (strchr(name, ':')) {
294 addr->family = AF_INET6;
295 if (family != AF_UNSPEC && family != AF_INET6)
297 if (inet_pton(AF_INET6, name, addr->data) <= 0)
304 if (family == AF_DECnet) {
306 addr->family = AF_DECnet;
307 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
309 memcpy(addr->data, dna.a_addr, 2);
315 addr->family = AF_INET;
316 if (family != AF_UNSPEC && family != AF_INET)
319 if (get_addr_ipv4((__u8 *)addr->data, name) <= 0)
327 int get_prefix_1(inet_prefix *dst, char *arg, int family)
333 memset(dst, 0, sizeof(*dst));
335 if (strcmp(arg, "default") == 0 ||
336 strcmp(arg, "any") == 0 ||
337 strcmp(arg, "all") == 0) {
338 if (family == AF_DECnet)
340 dst->family = family;
346 slash = strchr(arg, '/');
350 err = get_addr_1(dst, arg, family);
352 switch(dst->family) {
364 if (get_netmask(&plen, slash+1, 0)
365 || plen > dst->bitlen) {
369 dst->flags |= PREFIXLEN_SPECIFIED;
379 int get_addr(inet_prefix *dst, const char *arg, int family)
381 if (family == AF_PACKET) {
382 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
385 if (get_addr_1(dst, arg, family)) {
386 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
392 int get_prefix(inet_prefix *dst, char *arg, int family)
394 if (family == AF_PACKET) {
395 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
398 if (get_prefix_1(dst, arg, family)) {
399 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
405 __u32 get_addr32(const char *name)
408 if (get_addr_1(&addr, name, AF_INET)) {
409 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
415 void incomplete_command(void)
417 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
421 void missarg(const char *key)
423 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
427 void invarg(const char *msg, const char *arg)
429 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
433 void duparg(const char *key, const char *arg)
435 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
439 void duparg2(const char *key, const char *arg)
441 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
445 int matches(const char *cmd, const char *pattern)
447 int len = strlen(cmd);
448 if (len > strlen(pattern))
450 return memcmp(pattern, cmd, len);
453 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
455 const __u32 *a1 = a->data;
456 const __u32 *a2 = b->data;
457 int words = bits >> 0x05;
462 if (memcmp(a1, a2, words << 2))
472 mask = htonl((0xffffffff) << (0x20 - bits));
474 if ((w1 ^ w2) & mask)
481 int __iproute2_hz_internal;
490 return atoi(getenv("HZ")) ? : HZ;
492 if (getenv("PROC_NET_PSCHED")) {
493 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
494 } else if (getenv("PROC_ROOT")) {
495 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
497 strcpy(name, "/proc/net/psched");
499 fp = fopen(name, "r");
503 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
513 int __iproute2_user_hz_internal;
515 int __get_user_hz(void)
517 return sysconf(_SC_CLK_TCK);
520 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
525 return inet_ntop(af, addr, buf, buflen);
527 return ipx_ntop(af, addr, buf, buflen);
530 struct dn_naddr dna = { 2, { 0, 0, }};
531 memcpy(dna.a_addr, addr, 2);
532 return dnet_ntop(af, &dna, buf, buflen);
539 #ifdef RESOLVE_HOSTNAMES
542 struct namerec *next;
548 static struct namerec *nht[NHASH];
550 static const char *resolve_address(const void *addr, int len, int af)
553 struct hostent *h_ent;
558 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
559 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
565 hash = *(__u32 *)(addr + len - 4) % NHASH;
567 for (n = nht[hash]; n; n = n->next) {
568 if (n->addr.family == af &&
569 n->addr.bytelen == len &&
570 memcmp(n->addr.data, addr, len) == 0)
573 if ((n = malloc(sizeof(*n))) == NULL)
576 n->addr.bytelen = len;
578 memcpy(n->addr.data, addr, len);
585 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
586 n->name = strdup(h_ent->h_name);
588 /* Even if we fail, "negative" entry is remembered. */
594 const char *format_host(int af, int len, const void *addr,
595 char *buf, int buflen)
597 #ifdef RESOLVE_HOSTNAMES
613 /* I see no reasons why gethostbyname
614 may not work for DECnet */
623 (n = resolve_address(addr, len, af)) != NULL)
627 return rt_addr_n2a(af, len, addr, buf, buflen);
631 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen)
636 for (i=0; i<len; i++) {
639 sprintf(ptr, "%02x", str[i]);
642 if (i != len-1 && blen > 1) {
650 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
660 while ((ch = *str) != ':' && ch != 0) {
661 if (ch >= '0' && ch <= '9')
663 else if (ch >= 'a' && ch <= 'f')
665 else if (ch >= 'A' && ch <= 'F')
684 memset(buf+cnt, 0, blen-cnt);
688 int print_timestamp(FILE *fp)
693 memset(&tv, 0, sizeof(tv));
694 gettimeofday(&tv, NULL);
696 tstr = asctime(localtime(&tv.tv_sec));
697 tstr[strlen(tstr)-1] = 0;
698 fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
704 /* Like glibc getline but handle continuation lines and comments */
705 ssize_t getcmdline(char **linep, size_t *lenp, FILE *in)
710 if ((cc = getline(linep, lenp, in)) < 0)
711 return cc; /* eof or error */
714 cp = strchr(*linep, '#');
718 while ((cp = strstr(*linep, "\\\n")) != NULL) {
723 if ((cc1 = getline(&line1, &len1, in)) < 0) {
724 fprintf(stderr, "Missing continuation line\n");
731 cp = strchr(line1, '#');
735 *lenp = strlen(*linep) + strlen(line1) + 1;
736 *linep = realloc(*linep, *lenp);
738 fprintf(stderr, "Out of memory\n");
743 strcat(*linep, line1);
749 /* split command line into argument vector */
750 int makeargs(char *line, char *argv[], int maxargs)
752 static const char ws[] = " \t\r\n";
756 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
757 if (argc >= (maxargs - 1)) {
758 fprintf(stderr, "Too many arguments to command\n");