[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/iptables/extensions/libipt_ah.c b/ap/app/iptables/extensions/libipt_ah.c
new file mode 100755
index 0000000..d049b42
--- /dev/null
+++ b/ap/app/iptables/extensions/libipt_ah.c
@@ -0,0 +1,170 @@
+/* Shared library add-on to iptables to add AH support. */
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+#include <xtables.h>
+#include <linux/netfilter_ipv4/ipt_ah.h>
+
+static void ah_help(void)
+{
+ printf(
+"ah match options:\n"
+"[!] --ahspi spi[:spi]\n"
+" match spi (range)\n");
+}
+
+static const struct option ah_opts[] = {
+ { "ahspi", 1, NULL, '1' },
+ { .name = NULL }
+};
+
+static u_int32_t
+parse_ah_spi(const char *spistr)
+{
+ unsigned long int spi;
+ char* ep;
+
+ spi = strtoul(spistr,&ep,0) ;
+
+ if ( spistr == ep ) {
+ xtables_error(PARAMETER_PROBLEM,
+ "AH no valid digits in spi `%s'", spistr);
+ }
+ if ( spi == ULONG_MAX && errno == ERANGE ) {
+ xtables_error(PARAMETER_PROBLEM,
+ "spi `%s' specified too big: would overflow", spistr);
+ }
+ if ( *spistr != '\0' && *ep != '\0' ) {
+ xtables_error(PARAMETER_PROBLEM,
+ "AH error parsing spi `%s'", spistr);
+ }
+ return spi;
+}
+
+static void
+parse_ah_spis(const char *spistring, u_int32_t *spis)
+{
+ char *buffer;
+ char *cp;
+
+ buffer = strdup(spistring);
+ if ((cp = strchr(buffer, ':')) == NULL)
+ spis[0] = spis[1] = parse_ah_spi(buffer);
+ else {
+ *cp = '\0';
+ cp++;
+
+ spis[0] = buffer[0] ? parse_ah_spi(buffer) : 0;
+ spis[1] = cp[0] ? parse_ah_spi(cp) : 0xFFFFFFFF;
+ }
+ free(buffer);
+}
+
+static void ah_init(struct xt_entry_match *m)
+{
+ struct ipt_ah *ahinfo = (struct ipt_ah *)m->data;
+
+ ahinfo->spis[1] = 0xFFFFFFFF;
+}
+
+#define AH_SPI 0x01
+
+static int ah_parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry, struct xt_entry_match **match)
+{
+ struct ipt_ah *ahinfo = (struct ipt_ah *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ if (*flags & AH_SPI)
+ xtables_error(PARAMETER_PROBLEM,
+ "Only one `--ahspi' allowed");
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_ah_spis(argv[optind-1], ahinfo->spis);
+ if (invert)
+ ahinfo->invflags |= IPT_AH_INV_SPI;
+ *flags |= AH_SPI;
+ break;
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void
+print_spis(const char *name, u_int32_t min, u_int32_t max,
+ int invert)
+{
+ const char *inv = invert ? "!" : "";
+
+ if (min != 0 || max != 0xFFFFFFFF || invert) {
+ printf("%s", name);
+ if (min == max) {
+ printf(":%s", inv);
+ printf("%u", min);
+ } else {
+ printf("s:%s", inv);
+ printf("%u",min);
+ printf(":");
+ printf("%u",max);
+ }
+ printf(" ");
+ }
+}
+
+static void ah_print(const void *ip, const struct xt_entry_match *match,
+ int numeric)
+{
+ const struct ipt_ah *ah = (struct ipt_ah *)match->data;
+
+ printf("ah ");
+ print_spis("spi", ah->spis[0], ah->spis[1],
+ ah->invflags & IPT_AH_INV_SPI);
+ if (ah->invflags & ~IPT_AH_INV_MASK)
+ printf("Unknown invflags: 0x%X ",
+ ah->invflags & ~IPT_AH_INV_MASK);
+}
+
+static void ah_save(const void *ip, const struct xt_entry_match *match)
+{
+ const struct ipt_ah *ahinfo = (struct ipt_ah *)match->data;
+
+ if (!(ahinfo->spis[0] == 0
+ && ahinfo->spis[1] == 0xFFFFFFFF)) {
+ printf("%s--ahspi ",
+ (ahinfo->invflags & IPT_AH_INV_SPI) ? "! " : "");
+ if (ahinfo->spis[0]
+ != ahinfo->spis[1])
+ printf("%u:%u ",
+ ahinfo->spis[0],
+ ahinfo->spis[1]);
+ else
+ printf("%u ",
+ ahinfo->spis[0]);
+ }
+
+}
+
+static struct xtables_match ah_mt_reg = {
+ .name = "ah",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV4,
+ .size = XT_ALIGN(sizeof(struct ipt_ah)),
+ .userspacesize = XT_ALIGN(sizeof(struct ipt_ah)),
+ .help = ah_help,
+ .init = ah_init,
+ .parse = ah_parse,
+ .print = ah_print,
+ .save = ah_save,
+ .extra_opts = ah_opts,
+};
+
+void
+_init(void)
+{
+ xtables_register_match(&ah_mt_reg);
+}