[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_string_old.c b/ap/app/iptables/extensions/libipt_string_old.c
new file mode 100755
index 0000000..c17cd23
--- /dev/null
+++ b/ap/app/iptables/extensions/libipt_string_old.c
@@ -0,0 +1,289 @@
+/* Shared library add-on to iptables to add string matching support.
+ *
+ * Copyright (C) 2000 Emmanuel Roger <winfield@freegates.be>
+ *
+ * ChangeLog
+ * 29.12.2003: Michael Rash <mbr@cipherdyne.org>
+ * Fixed iptables save/restore for ascii strings
+ * that contain space chars, and hex strings that
+ * contain embedded NULL chars. Updated to print
+ * strings in hex mode if any non-printable char
+ * is contained within the string.
+ *
+ * 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.
+ */
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <ctype.h>
+
+#include <xtables.h>
+#include <linux/netfilter_ipv4/ipt_string.h>
+
+
+static void
+help(void)
+{
+ printf(
+"STRING match options:\n"
+"--string [!] string Match a string in a packet\n"
+"--hex-string [!] string Match a hex string in a packet\n");
+}
+
+
+static struct option opts[] = {
+ { .name = "string", .has_arg = 1, .flag = 0, .val = '1' },
+ { .name = "hex-string", .has_arg = 1, .flag = 0, .val = '2' },
+ { .name = NULL }
+};
+
+
+static void
+init(struct xt_entry_match *m)
+{
+}
+
+
+static void
+parse_string(const char *s, struct ipt_string_info *info)
+{
+ if (strlen(s) <= BM_MAX_NLEN) strcpy(info->string, s);
+ else xtables_error(PARAMETER_PROBLEM, "STRING too long `%s'", s);
+}
+
+
+static void
+parse_hex_string(const char *s, struct ipt_string_info *info)
+{
+ int i=0, slen, sindex=0, schar;
+ short hex_f = 0, literal_f = 0;
+ char hextmp[3];
+
+ slen = strlen(s);
+
+ if (slen == 0) {
+ xtables_error(PARAMETER_PROBLEM,
+ "STRING must contain at least one char");
+ }
+
+ while (i < slen) {
+ if (s[i] == '\\' && !hex_f) {
+ literal_f = 1;
+ } else if (s[i] == '\\') {
+ xtables_error(PARAMETER_PROBLEM,
+ "Cannot include literals in hex data");
+ } else if (s[i] == '|') {
+ if (hex_f)
+ hex_f = 0;
+ else {
+ hex_f = 1;
+ /* get past any initial whitespace just after the '|' */
+ while (s[i+1] == ' ')
+ i++;
+ }
+ if (i+1 >= slen)
+ break;
+ else
+ i++; /* advance to the next character */
+ }
+
+ if (literal_f) {
+ if (i+1 >= slen) {
+ xtables_error(PARAMETER_PROBLEM,
+ "Bad literal placement at end of string");
+ }
+ info->string[sindex] = s[i+1];
+ i += 2; /* skip over literal char */
+ literal_f = 0;
+ } else if (hex_f) {
+ if (i+1 >= slen) {
+ xtables_error(PARAMETER_PROBLEM,
+ "Odd number of hex digits");
+ }
+ if (i+2 >= slen) {
+ /* must end with a "|" */
+ xtables_error(PARAMETER_PROBLEM, "Invalid hex block");
+ }
+ if (! isxdigit(s[i])) /* check for valid hex char */
+ xtables_error(PARAMETER_PROBLEM, "Invalid hex char `%c'", s[i]);
+ if (! isxdigit(s[i+1])) /* check for valid hex char */
+ xtables_error(PARAMETER_PROBLEM, "Invalid hex char `%c'", s[i+1]);
+ hextmp[0] = s[i];
+ hextmp[1] = s[i+1];
+ hextmp[2] = '\0';
+ if (! sscanf(hextmp, "%x", &schar))
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid hex char `%c'", s[i]);
+ info->string[sindex] = (char) schar;
+ if (s[i+2] == ' ')
+ i += 3; /* spaces included in the hex block */
+ else
+ i += 2;
+ } else { /* the char is not part of hex data, so just copy */
+ info->string[sindex] = s[i];
+ i++;
+ }
+ if (sindex > BM_MAX_NLEN)
+ xtables_error(PARAMETER_PROBLEM, "STRING too long `%s'", s);
+ sindex++;
+ }
+ info->len = sindex;
+}
+
+
+/* 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 ipt_string_info *stringinfo = (struct ipt_string_info *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ if (*flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "Can't specify multiple strings");
+
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_string(argv[optind-1], stringinfo);
+ if (invert)
+ stringinfo->invert = 1;
+ stringinfo->len=strlen((char *)&stringinfo->string);
+ *flags = 1;
+ break;
+
+ case '2':
+ if (*flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "Can't specify multiple strings");
+
+ xtables_check_inverse(optarg, &invert, &optind, 0);
+ parse_hex_string(argv[optind-1], stringinfo); /* sets length */
+ if (invert)
+ stringinfo->invert = 1;
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+
+/* Final check; must have specified --string. */
+static void
+final_check(unsigned int flags)
+{
+ if (!flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "STRING match: You must specify `--string' or `--hex-string'");
+}
+
+/* Test to see if the string contains non-printable chars or quotes */
+static unsigned short int
+is_hex_string(const char *str, const unsigned short int len)
+{
+ unsigned int i;
+ for (i=0; i < len; i++)
+ if (! isprint(str[i]))
+ return 1; /* string contains at least one non-printable char */
+ /* use hex output if the last char is a "\" */
+ if ((unsigned char) str[len-1] == 0x5c)
+ return 1;
+ return 0;
+}
+
+/* Print string with "|" chars included as one would pass to --hex-string */
+static void
+print_hex_string(const char *str, const unsigned short int len)
+{
+ unsigned int i;
+ /* start hex block */
+ printf("\"|");
+ for (i=0; i < len; i++) {
+ /* see if we need to prepend a zero */
+ if ((unsigned char) str[i] <= 0x0F)
+ printf("0%x", (unsigned char) str[i]);
+ else
+ printf("%x", (unsigned char) str[i]);
+ }
+ /* close hex block */
+ printf("|\" ");
+}
+
+static void
+print_string(const char *str, const unsigned short int len)
+{
+ unsigned int i;
+ printf("\"");
+ for (i=0; i < len; i++) {
+ if ((unsigned char) str[i] == 0x22) /* escape any embedded quotes */
+ printf("%c", 0x5c);
+ printf("%c", (unsigned char) str[i]);
+ }
+ printf("\" "); /* closing space and quote */
+}
+
+/* Prints out the matchinfo. */
+static void
+print(const void *ip,
+ const struct xt_entry_match *match,
+ int numeric)
+{
+ const struct ipt_string_info *info =
+ (const struct ipt_string_info*) match->data;
+
+ if (is_hex_string(info->string, info->len)) {
+ printf("STRING match %s", (info->invert) ? "!" : "");
+ print_hex_string(info->string, info->len);
+ } else {
+ printf("STRING match %s", (info->invert) ? "!" : "");
+ print_string(info->string, info->len);
+ }
+}
+
+
+/* Saves the union ipt_matchinfo in parseable form to stdout. */
+static void
+save(const void *ip, const struct xt_entry_match *match)
+{
+ const struct ipt_string_info *info =
+ (const struct ipt_string_info*) match->data;
+
+ if (is_hex_string(info->string, info->len)) {
+ printf("--hex-string %s", (info->invert) ? "! ": "");
+ print_hex_string(info->string, info->len);
+ } else {
+ printf("--string %s", (info->invert) ? "! ": "");
+ print_string(info->string, info->len);
+ }
+}
+
+
+static struct xtables_match string = {
+ .name = "string",
+ .version = XTABLES_VERSION,
+ .family = NFPROTO_IPV4,
+ .size = XT_ALIGN(sizeof(struct ipt_string_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct ipt_string_info)),
+ .help = &help,
+ .init = &init,
+ .parse = &parse,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+
+void _init(void)
+{
+ xtables_register_match(&string);
+}