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
20 #include <arpa/inet.h>
25 int get_integer(int *val, char *arg, int base)
32 res = strtol(arg, &ptr, base);
33 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
39 int get_unsigned(unsigned *val, char *arg, int base)
46 res = strtoul(arg, &ptr, base);
47 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
53 int get_u32(__u32 * val, char *arg, int base)
60 res = strtoul(arg, &ptr, base);
61 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
67 int get_u16(__u16 * val, char *arg, int base)
74 res = strtoul(arg, &ptr, base);
75 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
81 int get_u8(__u8 * val, char *arg, int base)
88 res = strtoul(arg, &ptr, base);
89 if (!ptr || ptr == arg || *ptr || res > 0xFF)
95 int get_s16(__s16 * val, char *arg, int base)
102 res = strtol(arg, &ptr, base);
103 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
109 int get_s8(__s8 * val, char *arg, int base)
116 res = strtol(arg, &ptr, base);
117 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
123 int get_addr_1(inet_prefix * addr, char *name, int family)
126 unsigned char *ap = (unsigned char *) addr->data;
129 memset(addr, 0, sizeof(*addr));
131 if (strcmp(name, "default") == 0 ||
132 strcmp(name, "all") == 0 || strcmp(name, "any") == 0) {
133 addr->family = family;
134 addr->bytelen = (family == AF_INET6 ? 16 : 4);
139 if (strchr(name, ':')) {
140 addr->family = AF_INET6;
141 if (family != AF_UNSPEC && family != AF_INET6)
143 if (inet_pton(AF_INET6, name, addr->data) <= 0)
150 addr->family = AF_INET;
151 if (family != AF_UNSPEC && family != AF_INET)
155 for (cp = name, i = 0; *cp; cp++) {
156 if (*cp <= '9' && *cp >= '0') {
157 ap[i] = 10 * ap[i] + (*cp - '0');
160 if (*cp == '.' && ++i <= 3)
167 int get_prefix_1(inet_prefix * dst, char *arg, int family)
173 memset(dst, 0, sizeof(*dst));
175 if (strcmp(arg, "default") == 0 || strcmp(arg, "any") == 0) {
176 dst->family = family;
182 slash = strchr(arg, '/');
185 err = get_addr_1(dst, arg, family);
187 switch (dst->family) {
196 if (get_integer(&plen, slash + 1, 0) || plen > dst->bitlen) {
209 int get_addr(inet_prefix * dst, char *arg, int family)
211 if (family == AF_PACKET) {
212 bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
214 if (get_addr_1(dst, arg, family)) {
215 bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
220 int get_prefix(inet_prefix * dst, char *arg, int family)
222 if (family == AF_PACKET) {
223 bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
225 if (get_prefix_1(dst, arg, family)) {
226 bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
231 __u32 get_addr32(char *name)
235 if (get_addr_1(&addr, name, AF_INET)) {
236 bb_error_msg_and_die("an IP address is expected rather than \"%s\"", name);
241 void incomplete_command(void)
243 bb_error_msg("Command line is not complete. Try option \"help\"");
247 void invarg(char *msg, char *arg)
249 bb_error_msg("argument \"%s\" is wrong: %s", arg, msg);
253 void duparg(char *key, char *arg)
255 bb_error_msg("duplicate \"%s\": \"%s\" is the second value.", key, arg);
259 void duparg2(char *key, char *arg)
261 bb_error_msg("either \"%s\" is duplicate, or \"%s\" is a garbage.", key, arg);
265 int matches(char *cmd, char *pattern)
267 int len = strlen(cmd);
269 if (len > strlen(pattern)) {
272 return memcmp(pattern, cmd, len);
275 int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits)
279 int words = bits >> 0x05;
284 if (memcmp(a1, a2, words << 2))
294 mask = htonl((0xffffffff) << (0x20 - bits));
296 if ((w1 ^ w2) & mask)
303 int __iproute2_hz_internal;
308 FILE *fp = fopen("/proc/net/psched", "r");
313 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
320 return sysconf(_SC_CLK_TCK);
323 const char *rt_addr_n2a(int af, int len, void *addr, char *buf, int buflen)
328 return inet_ntop(af, addr, buf, buflen);
335 const char *format_host(int af, int len, void *addr, char *buf, int buflen)
337 #ifdef RESOLVE_HOSTNAMES
339 struct hostent *h_ent;
352 if (len > 0 && (h_ent = gethostbyaddr(addr, len, af)) != NULL) {
353 snprintf(buf, buflen - 1, "%s", h_ent->h_name);
358 return rt_addr_n2a(af, len, addr, buf, buflen);