4 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
6 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
19 #include "inet_common.h"
21 int get_integer(int *val, char *arg, int base)
28 res = strtol(arg, &ptr, base);
29 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
35 int get_unsigned(unsigned *val, char *arg, int base)
42 res = strtoul(arg, &ptr, base);
43 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
49 int get_u32(__u32 * val, char *arg, int base)
56 res = strtoul(arg, &ptr, base);
57 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
63 int get_u16(__u16 * val, char *arg, int base)
70 res = strtoul(arg, &ptr, base);
71 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
77 int get_u8(__u8 * val, char *arg, int base)
84 res = strtoul(arg, &ptr, base);
85 if (!ptr || ptr == arg || *ptr || res > 0xFF)
91 int get_s16(__s16 * val, char *arg, int base)
98 res = strtol(arg, &ptr, base);
99 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
105 int get_s8(__s8 * val, char *arg, int base)
112 res = strtol(arg, &ptr, base);
113 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
119 int get_addr_1(inet_prefix * addr, char *name, int family)
122 unsigned char *ap = (unsigned char *) addr->data;
125 memset(addr, 0, sizeof(*addr));
127 if (strcmp(name, bb_INET_default) == 0 ||
128 strcmp(name, "all") == 0 || strcmp(name, "any") == 0) {
129 addr->family = family;
130 addr->bytelen = (family == AF_INET6 ? 16 : 4);
135 if (strchr(name, ':')) {
136 addr->family = AF_INET6;
137 if (family != AF_UNSPEC && family != AF_INET6)
139 if (inet_pton(AF_INET6, name, addr->data) <= 0)
146 addr->family = AF_INET;
147 if (family != AF_UNSPEC && family != AF_INET)
151 for (cp = name, i = 0; *cp; cp++) {
152 if (*cp <= '9' && *cp >= '0') {
153 ap[i] = 10 * ap[i] + (*cp - '0');
156 if (*cp == '.' && ++i <= 3)
163 int get_prefix_1(inet_prefix * dst, char *arg, int family)
169 memset(dst, 0, sizeof(*dst));
171 if (strcmp(arg, bb_INET_default) == 0 || strcmp(arg, "any") == 0) {
172 dst->family = family;
178 slash = strchr(arg, '/');
181 err = get_addr_1(dst, arg, family);
183 switch (dst->family) {
192 if (get_integer(&plen, slash + 1, 0) || plen > dst->bitlen) {
205 int get_addr(inet_prefix * dst, char *arg, int family)
207 if (family == AF_PACKET) {
208 bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
210 if (get_addr_1(dst, arg, family)) {
211 bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
216 int get_prefix(inet_prefix * dst, char *arg, int family)
218 if (family == AF_PACKET) {
219 bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
221 if (get_prefix_1(dst, arg, family)) {
222 bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
227 __u32 get_addr32(char *name)
231 if (get_addr_1(&addr, name, AF_INET)) {
232 bb_error_msg_and_die("an IP address is expected rather than \"%s\"", name);
237 void incomplete_command(void)
239 bb_error_msg("Command line is not complete. Try option \"help\"");
243 void invarg(const char const *arg, const char const *opt)
245 bb_error_msg(bb_msg_invalid_arg, arg, opt);
249 void duparg(char *key, char *arg)
251 bb_error_msg("duplicate \"%s\": \"%s\" is the second value.", key, arg);
255 void duparg2(char *key, char *arg)
257 bb_error_msg("either \"%s\" is duplicate, or \"%s\" is a garbage.", key, arg);
261 int matches(char *cmd, char *pattern)
263 int len = strlen(cmd);
265 if (len > strlen(pattern)) {
268 return memcmp(pattern, cmd, len);
271 int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits)
275 int words = bits >> 0x05;
280 if (memcmp(a1, a2, words << 2))
290 mask = htonl((0xffffffff) << (0x20 - bits));
292 if ((w1 ^ w2) & mask)
299 int __iproute2_hz_internal;
304 FILE *fp = fopen("/proc/net/psched", "r");
309 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
316 return sysconf(_SC_CLK_TCK);
319 const char *rt_addr_n2a(int af, int ATTRIBUTE_UNUSED len,
320 void *addr, char *buf, int buflen)
325 return inet_ntop(af, addr, buf, buflen);
332 const char *format_host(int af, int len, void *addr, char *buf, int buflen)
334 #ifdef RESOLVE_HOSTNAMES
336 struct hostent *h_ent;
349 if (len > 0 && (h_ent = gethostbyaddr(addr, len, af)) != NULL) {
350 snprintf(buf, buflen - 1, "%s", h_ent->h_name);
355 return rt_addr_n2a(af, len, addr, buf, buflen);