summaryrefslogtreecommitdiff
path: root/i/pc104/initrd/conf/busybox/networking/libiproute/utils.c
diff options
context:
space:
mode:
Diffstat (limited to 'i/pc104/initrd/conf/busybox/networking/libiproute/utils.c')
-rw-r--r--i/pc104/initrd/conf/busybox/networking/libiproute/utils.c330
1 files changed, 330 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/networking/libiproute/utils.c b/i/pc104/initrd/conf/busybox/networking/libiproute/utils.c
new file mode 100644
index 0000000..591c893
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/networking/libiproute/utils.c
@@ -0,0 +1,330 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * utils.c
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * Changes:
+ *
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ */
+
+#include "libbb.h"
+
+#include <string.h>
+#include <unistd.h>
+
+#include "utils.h"
+#include "inet_common.h"
+
+int get_integer(int *val, char *arg, int base)
+{
+ long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtol(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_unsigned(unsigned *val, char *arg, int base)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_u32(uint32_t * val, char *arg, int base)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_u16(uint16_t * val, char *arg, int base)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_u8(uint8_t * val, char *arg, int base)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > 0xFF)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_s16(int16_t * val, char *arg, int base)
+{
+ long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtol(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_s8(int8_t * val, char *arg, int base)
+{
+ long res;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtol(arg, &ptr, base);
+ if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+int get_addr_1(inet_prefix * addr, char *name, int family)
+{
+ char *cp;
+ unsigned char *ap = (unsigned char *) addr->data;
+ int i;
+
+ memset(addr, 0, sizeof(*addr));
+
+ if (strcmp(name, bb_str_default) == 0 ||
+ strcmp(name, "all") == 0 || strcmp(name, "any") == 0) {
+ addr->family = family;
+ addr->bytelen = (family == AF_INET6 ? 16 : 4);
+ addr->bitlen = -1;
+ return 0;
+ }
+
+ if (strchr(name, ':')) {
+ addr->family = AF_INET6;
+ if (family != AF_UNSPEC && family != AF_INET6)
+ return -1;
+ if (inet_pton(AF_INET6, name, addr->data) <= 0)
+ return -1;
+ addr->bytelen = 16;
+ addr->bitlen = -1;
+ return 0;
+ }
+
+ addr->family = AF_INET;
+ if (family != AF_UNSPEC && family != AF_INET)
+ return -1;
+ addr->bytelen = 4;
+ addr->bitlen = -1;
+ for (cp = name, i = 0; *cp; cp++) {
+ if (*cp <= '9' && *cp >= '0') {
+ ap[i] = 10 * ap[i] + (*cp - '0');
+ continue;
+ }
+ if (*cp == '.' && ++i <= 3)
+ continue;
+ return -1;
+ }
+ return 0;
+}
+
+int get_prefix_1(inet_prefix * dst, char *arg, int family)
+{
+ int err;
+ int plen;
+ char *slash;
+
+ memset(dst, 0, sizeof(*dst));
+
+ if (strcmp(arg, bb_str_default) == 0 || strcmp(arg, "any") == 0) {
+ dst->family = family;
+ dst->bytelen = 0;
+ dst->bitlen = 0;
+ return 0;
+ }
+
+ slash = strchr(arg, '/');
+ if (slash)
+ *slash = '\0';
+ err = get_addr_1(dst, arg, family);
+ if (err == 0) {
+ switch (dst->family) {
+ case AF_INET6:
+ dst->bitlen = 128;
+ break;
+ default:
+ case AF_INET:
+ dst->bitlen = 32;
+ }
+ if (slash) {
+ if (get_integer(&plen, slash + 1, 0) || plen > dst->bitlen) {
+ err = -1;
+ goto done;
+ }
+ dst->bitlen = plen;
+ }
+ }
+ done:
+ if (slash)
+ *slash = '/';
+ return err;
+}
+
+int get_addr(inet_prefix * dst, char *arg, int family)
+{
+ if (family == AF_PACKET) {
+ bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context", arg);
+ }
+ if (get_addr_1(dst, arg, family)) {
+ bb_error_msg_and_die("an inet address is expected rather than \"%s\"", arg);
+ }
+ return 0;
+}
+
+int get_prefix(inet_prefix * dst, char *arg, int family)
+{
+ if (family == AF_PACKET) {
+ bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context", arg);
+ }
+ if (get_prefix_1(dst, arg, family)) {
+ bb_error_msg_and_die("an inet address is expected rather than \"%s\"", arg);
+ }
+ return 0;
+}
+
+uint32_t get_addr32(char *name)
+{
+ inet_prefix addr;
+
+ if (get_addr_1(&addr, name, AF_INET)) {
+ bb_error_msg_and_die("an IP address is expected rather than \"%s\"", name);
+ }
+ return addr.data[0];
+}
+
+void incomplete_command(void)
+{
+ bb_error_msg_and_die("command line is not complete, try option \"help\"");
+}
+
+void invarg(const char *arg, const char *opt)
+{
+ bb_error_msg_and_die(bb_msg_invalid_arg, arg, opt);
+}
+
+void duparg(const char *key, const char *arg)
+{
+ bb_error_msg_and_die("duplicate \"%s\": \"%s\" is the second value", key, arg);
+}
+
+void duparg2(const char *key, const char *arg)
+{
+ bb_error_msg_and_die("either \"%s\" is duplicate, or \"%s\" is garbage", key, arg);
+}
+
+int matches(const char *cmd, const char *pattern)
+{
+ int len = strlen(cmd);
+
+ return strncmp(pattern, cmd, len);
+}
+
+int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits)
+{
+ uint32_t *a1 = a->data;
+ uint32_t *a2 = b->data;
+ int words = bits >> 0x05;
+
+ bits &= 0x1f;
+
+ if (words)
+ if (memcmp(a1, a2, words << 2))
+ return -1;
+
+ if (bits) {
+ uint32_t w1, w2;
+ uint32_t mask;
+
+ w1 = a1[words];
+ w2 = a2[words];
+
+ mask = htonl((0xffffffff) << (0x20 - bits));
+
+ if ((w1 ^ w2) & mask)
+ return 1;
+ }
+
+ return 0;
+}
+
+const char *rt_addr_n2a(int af, int ATTRIBUTE_UNUSED len,
+ void *addr, char *buf, int buflen)
+{
+ switch (af) {
+ case AF_INET:
+ case AF_INET6:
+ return inet_ntop(af, addr, buf, buflen);
+ default:
+ return "???";
+ }
+}
+
+
+const char *format_host(int af, int len, void *addr, char *buf, int buflen)
+{
+#ifdef RESOLVE_HOSTNAMES
+ if (resolve_hosts) {
+ struct hostent *h_ent;
+
+ if (len <= 0) {
+ switch (af) {
+ case AF_INET:
+ len = 4;
+ break;
+ case AF_INET6:
+ len = 16;
+ break;
+ default:;
+ }
+ }
+ if (len > 0 && (h_ent = gethostbyaddr(addr, len, af)) != NULL) {
+ snprintf(buf, buflen - 1, "%s", h_ent->h_name);
+ return buf;
+ }
+ }
+#endif
+ return rt_addr_n2a(af, len, addr, buf, buflen);
+}