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 get_unsigned(unsigned *val, const char *arg, int base)
57 res = strtoul(arg, &ptr, base);
58 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
64 int get_u64(__u64 *val, const char *arg, int base)
66 unsigned long long res;
71 res = strtoull(arg, &ptr, base);
72 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
78 int get_u32(__u32 *val, const char *arg, int base)
85 res = strtoul(arg, &ptr, base);
86 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
92 int get_u16(__u16 *val, const char *arg, int base)
99 res = strtoul(arg, &ptr, base);
100 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
106 int get_u8(__u8 *val, const char *arg, int base)
113 res = strtoul(arg, &ptr, base);
114 if (!ptr || ptr == arg || *ptr || res > 0xFF)
120 int get_s16(__s16 *val, const char *arg, int base)
127 res = strtol(arg, &ptr, base);
128 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
134 int get_s8(__s8 *val, const char *arg, int base)
141 res = strtol(arg, &ptr, base);
142 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
148 int get_addr_1(inet_prefix *addr, const char *name, int family)
151 unsigned char *ap = (unsigned char*)addr->data;
154 memset(addr, 0, sizeof(*addr));
156 if (strcmp(name, "default") == 0 ||
157 strcmp(name, "all") == 0 ||
158 strcmp(name, "any") == 0) {
159 if (family == AF_DECnet)
161 addr->family = family;
162 addr->bytelen = (family == AF_INET6 ? 16 : 4);
167 if (strchr(name, ':')) {
168 addr->family = AF_INET6;
169 if (family != AF_UNSPEC && family != AF_INET6)
171 if (inet_pton(AF_INET6, name, addr->data) <= 0)
178 if (family == AF_DECnet) {
180 addr->family = AF_DECnet;
181 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
183 memcpy(addr->data, dna.a_addr, 2);
189 addr->family = AF_INET;
190 if (family != AF_UNSPEC && family != AF_INET)
194 for (cp=name, i=0; *cp; cp++) {
195 if (*cp <= '9' && *cp >= '0') {
196 ap[i] = 10*ap[i] + (*cp-'0');
199 if (*cp == '.' && ++i <= 3)
206 int get_prefix_1(inet_prefix *dst, char *arg, int family)
212 memset(dst, 0, sizeof(*dst));
214 if (strcmp(arg, "default") == 0 ||
215 strcmp(arg, "any") == 0 ||
216 strcmp(arg, "all") == 0) {
217 if (family == AF_DECnet)
219 dst->family = family;
225 slash = strchr(arg, '/');
229 err = get_addr_1(dst, arg, family);
231 switch(dst->family) {
243 if (get_unsigned(&plen, slash+1, 0) || plen > dst->bitlen) {
247 dst->flags |= PREFIXLEN_SPECIFIED;
257 int get_addr(inet_prefix *dst, const char *arg, int family)
259 if (family == AF_PACKET) {
260 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
263 if (get_addr_1(dst, arg, family)) {
264 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
270 int get_prefix(inet_prefix *dst, char *arg, int family)
272 if (family == AF_PACKET) {
273 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
276 if (get_prefix_1(dst, arg, family)) {
277 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
283 __u32 get_addr32(const char *name)
286 if (get_addr_1(&addr, name, AF_INET)) {
287 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
293 void incomplete_command(void)
295 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
299 void missarg(const char *key)
301 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
305 void invarg(const char *msg, const char *arg)
307 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
311 void duparg(const char *key, const char *arg)
313 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
317 void duparg2(const char *key, const char *arg)
319 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
323 int matches(const char *cmd, const char *pattern)
325 int len = strlen(cmd);
326 if (len > strlen(pattern))
328 return memcmp(pattern, cmd, len);
331 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
335 int words = bits >> 0x05;
340 if (memcmp(a1, a2, words << 2))
350 mask = htonl((0xffffffff) << (0x20 - bits));
352 if ((w1 ^ w2) & mask)
359 int __iproute2_hz_internal;
368 return atoi(getenv("HZ")) ? : HZ;
370 if (getenv("PROC_NET_PSCHED")) {
371 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
372 } else if (getenv("PROC_ROOT")) {
373 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
375 strcpy(name, "/proc/net/psched");
377 fp = fopen(name, "r");
381 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
391 int __iproute2_user_hz_internal;
393 int __get_user_hz(void)
395 return sysconf(_SC_CLK_TCK);
398 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
403 return inet_ntop(af, addr, buf, buflen);
405 return ipx_ntop(af, addr, buf, buflen);
408 struct dn_naddr dna = { 2, { 0, 0, }};
409 memcpy(dna.a_addr, addr, 2);
410 return dnet_ntop(af, &dna, buf, buflen);
417 #ifdef RESOLVE_HOSTNAMES
420 struct namerec *next;
425 static struct namerec *nht[256];
427 char *resolve_address(const char *addr, int len, int af)
430 struct hostent *h_ent;
435 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
436 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
442 hash = addr[len-1] ^ addr[len-2] ^ addr[len-3] ^ addr[len-4];
444 for (n = nht[hash]; n; n = n->next) {
445 if (n->addr.family == af &&
446 n->addr.bytelen == len &&
447 memcmp(n->addr.data, addr, len) == 0)
450 if ((n = malloc(sizeof(*n))) == NULL)
453 n->addr.bytelen = len;
455 memcpy(n->addr.data, addr, len);
462 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
463 n->name = strdup(h_ent->h_name);
465 /* Even if we fail, "negative" entry is remembered. */
471 const char *format_host(int af, int len, const void *addr,
472 char *buf, int buflen)
474 #ifdef RESOLVE_HOSTNAMES
489 /* I see no reasons why gethostbyname
490 may not work for DECnet */
499 (n = resolve_address(addr, len, af)) != NULL)
503 return rt_addr_n2a(af, len, addr, buf, buflen);
507 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen)
512 for (i=0; i<len; i++) {
515 sprintf(ptr, "%02x", str[i]);
518 if (i != len-1 && blen > 1) {
526 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
536 while ((ch = *str) != ':' && ch != 0) {
537 if (ch >= '0' && ch <= '9')
539 else if (ch >= 'a' && ch <= 'f')
541 else if (ch >= 'A' && ch <= 'F')
560 memset(buf+cnt, 0, blen-cnt);
564 int print_timestamp(FILE *fp)
569 memset(&tv, 0, sizeof(tv));
570 gettimeofday(&tv, NULL);
572 tstr = asctime(localtime(&tv.tv_sec));
573 tstr[strlen(tstr)-1] = 0;
574 fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
580 /* Like glibc getline but handle continuation lines and comments */
581 size_t getcmdline(char **linep, size_t *lenp, FILE *in)
586 if ((cc = getline(linep, lenp, in)) < 0)
587 return cc; /* eof or error */
590 cp = strchr(*linep, '#');
594 while ((cp = strstr(*linep, "\\\n")) != NULL) {
599 if ((cc1 = getline(&line1, &len1, in)) < 0) {
600 fprintf(stderr, "Missing continuation line\n");
607 cp = strchr(line1, '#');
611 *linep = realloc(*linep, strlen(*linep) + strlen(line1) + 1);
613 fprintf(stderr, "Out of memory\n");
617 strcat(*linep, line1);
623 /* split command line into argument vector */
624 int makeargs(char *line, char *argv[], int maxargs)
626 static const char ws[] = " \t\r\n";
630 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
631 if (argc >= (maxargs - 1)) {
632 fprintf(stderr, "Too many arguments to command\n");