[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/libxt_webstr.c b/ap/app/iptables/extensions/libxt_webstr.c
new file mode 100755
index 0000000..0ffa365
--- /dev/null
+++ b/ap/app/iptables/extensions/libxt_webstr.c
@@ -0,0 +1,196 @@
+/* Shared library add-on to iptables to add string matching support.
+ *
+ * (C) 2010 Atheros Communications. Inc.
+ * 3/26/2010: <yingming.yu@atheros.com>
+ * Port to netfilter core interface of 2.6.31 kernel (ipt->xt)
+ *
+ * Copyright (C) 2000 Emmanuel Roger <winfield@freegates.be>
+ *
+ * ChangeLog
+ * 27.01.2001: Gianni Tedesco <gianni@ecsc.co.uk>
+ * Changed --tos to --string in save(). Also
+ * updated to work with slightly modified
+ * ipt_string_info.
+ */
+
+/* Shared library add-on to iptables to add webstr matching support.
+ *
+ * Copyright (C) 2003, CyberTAN Corporation
+ * All Rights Reserved.
+ *
+ * Description:
+ * This is shared library, added to iptables, for web content inspection.
+ * It was derived from 'string' matching support, declared as above.
+ *
+ */
+
+
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_webstr.h>
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+ printf(
+"WEBSTR match v%s options:\n"
+"--webstr [!] host Match a http string in a packet\n"
+"--webstr [!] url Match a http string in a packet\n"
+"--webstr [!] content Match a http string in a packet\n",
+XTABLES_VERSION);
+
+ fputc('\n', stdout);
+}
+
+static struct option opts[] = {
+ { "host", 1, 0, '1' },
+ { "url", 1, 0, '2' },
+ { "content", 1, 0, '3' },
+ {0}
+};
+
+/* Initialize the match. */
+static void
+init(struct xt_entry_match *m, unsigned int *nfcache)
+{
+ *nfcache |= NFC_UNKNOWN;
+}
+
+static void
+parse_string(const char *s, struct xt_webstr_info *info)
+{
+ if (strlen(s) <= BM_MAX_NLEN) strcpy(info->string, s);
+ else xtables_error(PARAMETER_PROBLEM, "WEBSTR too long `%s'", s);
+}
+
+/* Function which parses command options; returns true if it
+ ate an option */
+static int
+parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry,
+ struct xt_entry_match **match)
+{
+ struct xt_webstr_info *stringinfo = (struct xt_webstr_info *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_string(argv[optind-1], stringinfo);
+ if (invert)
+ stringinfo->invert = 1;
+ stringinfo->len=strlen((char *)&stringinfo->string);
+ stringinfo->type = IPT_WEBSTR_HOST;
+ break;
+
+ case '2':
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_string(argv[optind-1], stringinfo);
+ if (invert)
+ stringinfo->invert = 1;
+ stringinfo->len=strlen((char *)&stringinfo->string);
+ stringinfo->type = IPT_WEBSTR_URL;
+ break;
+
+ case '3':
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_string(argv[optind-1], stringinfo);
+ if (invert)
+ stringinfo->invert = 1;
+ stringinfo->len=strlen((char *)&stringinfo->string);
+ stringinfo->type = IPT_WEBSTR_CONTENT;
+ break;
+
+ default:
+ return 0;
+ }
+
+ *flags = 1;
+ return 1;
+}
+
+static void
+print_string(char string[], int invert, int numeric)
+{
+
+ if (invert)
+ fputc('!', stdout);
+ printf("%s ",string);
+}
+
+/* Final check; must have specified --string. */
+static void
+final_check(unsigned int flags)
+{
+ if (!flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "WEBSTR match: You must specify `--webstr'");
+}
+
+/* Prints out the matchinfo. */
+static void
+print(const void *ip,
+ const struct xt_entry_match *match,
+ int numeric)
+{
+ struct xt_webstr_info *stringinfo = (struct xt_webstr_info *)match->data;
+
+ printf("WEBSTR match ");
+
+
+ switch (stringinfo->type) {
+ case IPT_WEBSTR_HOST:
+ printf("host ");
+ break;
+
+ case IPT_WEBSTR_URL:
+ printf("url ");
+ break;
+
+ case IPT_WEBSTR_CONTENT:
+ printf("content ");
+ break;
+
+ default:
+ printf("ERROR ");
+ break;
+ }
+
+ print_string(((struct xt_webstr_info *)match->data)->string,
+ ((struct xt_webstr_info *)match->data)->invert, numeric);
+}
+
+/* Saves the union ipt_matchinfo in parsable form to stdout. */
+static void
+save(const void *ip, const struct xt_entry_match *match)
+{
+ printf("--webstr ");
+ print_string(((struct xt_webstr_info *)match->data)->string,
+ ((struct xt_webstr_info *)match->data)->invert, 0);
+}
+
+static struct xtables_match webstr = {
+ .next = NULL,
+ .name = "webstr",
+ .version = XTABLES_VERSION,
+ .size = XT_ALIGN(sizeof(struct xt_webstr_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_webstr_info)),
+ .help = &help,
+ //.init = init,
+ .parse = parse,
+ .final_check = final_check,
+ .print = print,
+ .save = save,
+ .extra_opts = opts
+};
+
+void _init(void)
+{
+ xtables_register_match(&webstr);
+}