zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/busybox/src/networking/libiproute/utils.c b/ap/app/busybox/src/networking/libiproute/utils.c
new file mode 100644
index 0000000..d0fe306
--- /dev/null
+++ b/ap/app/busybox/src/networking/libiproute/utils.c
@@ -0,0 +1,296 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * Changes:
+ *
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ */
+
+#include "libbb.h"
+#include "utils.h"
+#include "inet_common.h"
+
+unsigned get_unsigned(char *arg, const char *errmsg)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= UINT_MAX) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
+}
+
+uint32_t get_u32(char *arg, const char *errmsg)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= 0xFFFFFFFFUL) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
+}
+
+uint16_t get_u16(char *arg, const char *errmsg)
+{
+ unsigned long res;
+ char *ptr;
+
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= 0xFFFF) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
+}
+
+int get_addr_1(inet_prefix *addr, char *name, int family)
+{
+ memset(addr, 0, sizeof(*addr));
+
+ if (strcmp(name, "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;
+ }
+
+ if (family != AF_UNSPEC && family != AF_INET)
+ return -1;
+
+ /* Try to parse it as IPv4 */
+ addr->family = AF_INET;
+#if 0 /* Doesn't handle e.g. "10.10", for example, "ip r l root 10.10/16" */
+ if (inet_pton(AF_INET, name, addr->data) <= 0)
+ return -1;
+#else
+ {
+ unsigned i = 0;
+ unsigned n = 0;
+ const char *cp = name - 1;
+ while (*++cp) {
+ if ((unsigned char)(*cp - '0') <= 9) {
+ n = 10 * n + (unsigned char)(*cp - '0');
+ if (n >= 256)
+ return -1;
+ ((uint8_t*)addr->data)[i] = n;
+ continue;
+ }
+ if (*cp == '.' && ++i <= 3) {
+ n = 0;
+ continue;
+ }
+ return -1;
+ }
+ }
+#endif
+ addr->bytelen = 4;
+ addr->bitlen = -1;
+
+ return 0;
+}
+
+static void get_prefix_1(inet_prefix *dst, char *arg, int family)
+{
+ char *slash;
+
+ memset(dst, 0, sizeof(*dst));
+
+ if (strcmp(arg, "default") == 0
+ || strcmp(arg, "all") == 0
+ || strcmp(arg, "any") == 0
+ ) {
+ dst->family = family;
+ /*dst->bytelen = 0; - done by memset */
+ /*dst->bitlen = 0;*/
+ return;
+ }
+
+ slash = strchr(arg, '/');
+ if (slash)
+ *slash = '\0';
+
+ if (get_addr_1(dst, arg, family) == 0) {
+ dst->bitlen = (dst->family == AF_INET6) ? 128 : 32;
+ if (slash) {
+ unsigned plen;
+ inet_prefix netmask_pfx;
+
+ netmask_pfx.family = AF_UNSPEC;
+ plen = bb_strtou(slash + 1, NULL, 0);
+ if ((errno || plen > dst->bitlen)
+ && get_addr_1(&netmask_pfx, slash + 1, family) != 0
+ ) {
+ goto bad;
+ }
+ if (netmask_pfx.family == AF_INET) {
+ /* fill in prefix length of dotted quad */
+ uint32_t mask = ntohl(netmask_pfx.data[0]);
+ uint32_t host = ~mask;
+
+ /* a valid netmask must be 2^n - 1 */
+ if (host & (host + 1))
+ goto bad;
+
+ for (plen = 0; mask; mask <<= 1)
+ ++plen;
+ if (plen > dst->bitlen)
+ goto bad;
+ /* dst->flags |= PREFIXLEN_SPECIFIED; */
+ }
+ dst->bitlen = plen;
+ }
+ }
+
+ if (slash)
+ *slash = '/';
+ return;
+ bad:
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "inet", "prefix", arg);
+}
+
+int get_addr(inet_prefix *dst, char *arg, int family)
+{
+ if (family == AF_PACKET) {
+ bb_error_msg_and_die("\"%s\" may be inet %s, but it is not allowed in this context", arg, "address");
+ }
+ if (get_addr_1(dst, arg, family)) {
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "inet", "address", arg);
+ }
+ return 0;
+}
+
+void get_prefix(inet_prefix *dst, char *arg, int family)
+{
+ if (family == AF_PACKET) {
+ bb_error_msg_and_die("\"%s\" may be inet %s, but it is not allowed in this context", arg, "prefix");
+ }
+ get_prefix_1(dst, arg, family);
+}
+
+uint32_t get_addr32(char *name)
+{
+ inet_prefix addr;
+
+ if (get_addr_1(&addr, name, AF_INET)) {
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "IP", "address", 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 inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
+{
+ const uint32_t *a1 = a->data;
+ const uint32_t *a2 = b->data;
+ int words = bits >> 5;
+
+ 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,
+ void *addr, char *buf, int buflen)
+{
+ switch (af) {
+ case AF_INET:
+ case AF_INET6:
+ return inet_ntop(af, addr, buf, buflen);
+ default:
+ return "???";
+ }
+}
+
+#ifdef RESOLVE_HOSTNAMES
+const char *format_host(int af, int len, void *addr, char *buf, int buflen)
+{
+ 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);
+ if (h_ent != NULL) {
+ safe_strncpy(buf, h_ent->h_name, buflen);
+ return buf;
+ }
+ }
+ }
+ return rt_addr_n2a(af, addr, buf, buflen);
+}
+#endif