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>
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 get_unsigned(unsigned *val, const char *arg, int base)
54 res = strtoul(arg, &ptr, base);
55 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
61 int get_u64(__u64 *val, const char *arg, int base)
63 unsigned long long res;
68 res = strtoull(arg, &ptr, base);
69 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
75 int get_u32(__u32 *val, const char *arg, int base)
82 res = strtoul(arg, &ptr, base);
83 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
89 int get_u16(__u16 *val, const char *arg, int base)
96 res = strtoul(arg, &ptr, base);
97 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
103 int get_u8(__u8 *val, const char *arg, int base)
110 res = strtoul(arg, &ptr, base);
111 if (!ptr || ptr == arg || *ptr || res > 0xFF)
117 int get_s16(__s16 *val, const char *arg, int base)
124 res = strtol(arg, &ptr, base);
125 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
131 int get_s8(__s8 *val, const char *arg, int base)
138 res = strtol(arg, &ptr, base);
139 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
145 int get_addr_1(inet_prefix *addr, const char *name, int family)
148 unsigned char *ap = (unsigned char*)addr->data;
151 memset(addr, 0, sizeof(*addr));
153 if (strcmp(name, "default") == 0 ||
154 strcmp(name, "all") == 0 ||
155 strcmp(name, "any") == 0) {
156 if (family == AF_DECnet)
158 addr->family = family;
159 addr->bytelen = (family == AF_INET6 ? 16 : 4);
164 if (strchr(name, ':')) {
165 addr->family = AF_INET6;
166 if (family != AF_UNSPEC && family != AF_INET6)
168 if (inet_pton(AF_INET6, name, addr->data) <= 0)
175 if (family == AF_DECnet) {
177 addr->family = AF_DECnet;
178 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
180 memcpy(addr->data, dna.a_addr, 2);
186 addr->family = AF_INET;
187 if (family != AF_UNSPEC && family != AF_INET)
191 for (cp=name, i=0; *cp; cp++) {
192 if (*cp <= '9' && *cp >= '0') {
193 ap[i] = 10*ap[i] + (*cp-'0');
196 if (*cp == '.' && ++i <= 3)
203 int get_prefix_1(inet_prefix *dst, char *arg, int family)
209 memset(dst, 0, sizeof(*dst));
211 if (strcmp(arg, "default") == 0 ||
212 strcmp(arg, "any") == 0 ||
213 strcmp(arg, "all") == 0) {
214 if (family == AF_DECnet)
216 dst->family = family;
222 slash = strchr(arg, '/');
226 err = get_addr_1(dst, arg, family);
228 switch(dst->family) {
240 if (get_integer(&plen, slash+1, 0) || plen > dst->bitlen) {
253 int get_addr(inet_prefix *dst, const char *arg, int family)
255 if (family == AF_PACKET) {
256 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
259 if (get_addr_1(dst, arg, family)) {
260 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
266 int get_prefix(inet_prefix *dst, char *arg, int family)
268 if (family == AF_PACKET) {
269 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
272 if (get_prefix_1(dst, arg, family)) {
273 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
279 __u32 get_addr32(const char *name)
282 if (get_addr_1(&addr, name, AF_INET)) {
283 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
289 void incomplete_command(void)
291 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
295 void missarg(const char *key)
297 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
301 void invarg(const char *msg, const char *arg)
303 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
307 void duparg(const char *key, const char *arg)
309 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
313 void duparg2(const char *key, const char *arg)
315 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
319 int matches(const char *cmd, const char *pattern)
321 int len = strlen(cmd);
322 if (len > strlen(pattern))
324 return memcmp(pattern, cmd, len);
327 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
331 int words = bits >> 0x05;
336 if (memcmp(a1, a2, words << 2))
346 mask = htonl((0xffffffff) << (0x20 - bits));
348 if ((w1 ^ w2) & mask)
355 int __iproute2_hz_internal;
364 return atoi(getenv("HZ")) ? : HZ;
366 if (getenv("PROC_NET_PSCHED")) {
367 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
368 } else if (getenv("PROC_ROOT")) {
369 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
371 strcpy(name, "/proc/net/psched");
373 fp = fopen(name, "r");
377 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
387 int __iproute2_user_hz_internal;
389 int __get_user_hz(void)
391 return sysconf(_SC_CLK_TCK);
394 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
399 return inet_ntop(af, addr, buf, buflen);
401 return ipx_ntop(af, addr, buf, buflen);
404 struct dn_naddr dna = { 2, { 0, 0, }};
405 memcpy(dna.a_addr, addr, 2);
406 return dnet_ntop(af, &dna, buf, buflen);
413 #ifdef RESOLVE_HOSTNAMES
416 struct namerec *next;
421 static struct namerec *nht[256];
423 char *resolve_address(const char *addr, int len, int af)
426 struct hostent *h_ent;
431 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
432 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
438 hash = addr[len-1] ^ addr[len-2] ^ addr[len-3] ^ addr[len-4];
440 for (n = nht[hash]; n; n = n->next) {
441 if (n->addr.family == af &&
442 n->addr.bytelen == len &&
443 memcmp(n->addr.data, addr, len) == 0)
446 if ((n = malloc(sizeof(*n))) == NULL)
449 n->addr.bytelen = len;
451 memcpy(n->addr.data, addr, len);
458 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
459 n->name = strdup(h_ent->h_name);
461 /* Even if we fail, "negative" entry is remembered. */
467 const char *format_host(int af, int len, const void *addr,
468 char *buf, int buflen)
470 #ifdef RESOLVE_HOSTNAMES
485 /* I see no reasons why gethostbyname
486 may not work for DECnet */
495 (n = resolve_address(addr, len, af)) != NULL)
499 return rt_addr_n2a(af, len, addr, buf, buflen);
503 __u8* hexstring_n2a(const __u8 *str, int len, __u8 *buf, int blen)
508 for (i=0; i<len; i++) {
511 sprintf(ptr, "%02x", str[i]);
514 if (i != len-1 && blen > 1) {
522 __u8* hexstring_a2n(const __u8 *str, __u8 *buf, int blen)
532 while ((ch = *str) != ':' && ch != 0) {
533 if (ch >= '0' && ch <= '9')
535 else if (ch >= 'a' && ch <= 'f')
537 else if (ch >= 'A' && ch <= 'F')
556 memset(buf+cnt, 0, blen-cnt);