From: Seiji Masugata <masugata@php.net>
Date: Fri, 25 Aug 2006 16:26:50 +0000 (+0000)
Subject: added configure option --disable-mbregex-backtrack.
X-Git-Tag: php-5.2.0RC3~56
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=100742f7a2c5f6ff076c868d3fdb95feb6e9063a;p=php

added configure option --disable-mbregex-backtrack.
---

diff --git a/ext/mbstring/config.m4 b/ext/mbstring/config.m4
index 49e0a86171..638f910a03 100644
--- a/ext/mbstring/config.m4
+++ b/ext/mbstring/config.m4
@@ -101,6 +101,11 @@ esac
     fi
     AC_DEFINE([HAVE_MBREGEX], 1, [whether to have multibyte regex support])
 
+
+    if test "$PHP_MBREGEX_BACKTRACK" != "no"; then
+      AC_DEFINE([HAVE_MBREGEX_BACKTRACK],1,[whether to check multibyte regex backtrack])
+    fi
+
     PHP_MBSTRING_ADD_CFLAG([-DNOT_RUBY])
     PHP_MBSTRING_ADD_BUILD_DIR([oniguruma])
     PHP_MBSTRING_ADD_BUILD_DIR([oniguruma/enc])
@@ -278,6 +283,9 @@ PHP_ARG_ENABLE(mbstring, whether to enable multibyte string support,
 PHP_ARG_ENABLE([mbregex], [whether to enable multibyte regex support],
 [  --disable-mbregex         MBSTRING: Disable multibyte regex support], yes, no)
 
+PHP_ARG_ENABLE([mbregex_backtrack], [whether to check multibyte regex backtrack],
+[  --disable-mbregex-backtrack         MBSTRING: Disable multibyte regex backtrack check], yes, no)
+
 PHP_ARG_WITH(libmbfl, [for external libmbfl],
 [  --with-libmbfl[=DIR]      MBSTRING: Use external libmbfl. DIR is the libmbfl install prefix.
                             If DIR is not set, the bundled libmbfl will be used], no, no)
diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index bacc7166af..457877c7dd 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -1050,6 +1050,11 @@ PHP_MINFO_FUNCTION(mbstring)
 		sprintf(buf, "%d.%d.%d",
 			ONIGURUMA_VERSION_MAJOR,ONIGURUMA_VERSION_MINOR,ONIGURUMA_VERSION_TEENY);
 		php_info_print_table_row(2, "Multibyte regex (oniguruma) version", buf);
+#ifdef HAVE_MBREGEX_BACKTRACK
+		php_info_print_table_row(2, "Multibyte regex (oniguruma) backtrack check", "On");
+#else	/* HAVE_MBREGEX_BACKTRACK */
+		php_info_print_table_row(2, "Multibyte regex (oniguruma) backtrack check", "Off");
+#endif	/* HAVE_MBREGEX_BACKTRACK */
 	}
 #endif
 	php_info_print_table_end();
diff --git a/ext/mbstring/oniguruma/regcomp.c b/ext/mbstring/oniguruma/regcomp.c
index 507faee8e2..7bc891cf0b 100644
--- a/ext/mbstring/oniguruma/regcomp.c
+++ b/ext/mbstring/oniguruma/regcomp.c
@@ -186,6 +186,8 @@ add_opcode(regex_t* reg, int opcode)
   return 0;
 }
 
+#ifdef USE_COMBINATION_EXPLOSION_CHECK
+
 static int
 add_state_check_num(regex_t* reg, int num)
 {
@@ -194,6 +196,7 @@ add_state_check_num(regex_t* reg, int num)
   BBUF_ADD(reg, &n, SIZE_STATE_CHECK_NUM);
   return 0;
 }
+#endif	/* USE_COMBINATION_EXPLOSION_CHECK */
 
 static int
 add_rel_addr(regex_t* reg, int addr)
diff --git a/ext/mbstring/oniguruma/regint.h b/ext/mbstring/oniguruma/regint.h
index c9f494e44e..aa293be459 100644
--- a/ext/mbstring/oniguruma/regint.h
+++ b/ext/mbstring/oniguruma/regint.h
@@ -59,7 +59,9 @@
 /* #define USE_UNICODE_FULL_RANGE_CTYPE */ /* --> move to regenc.h */
 #define USE_NAMED_GROUP
 #define USE_SUBEXP_CALL
+#ifdef HAVE_MBREGEX_BACKTRACK
 #define USE_COMBINATION_EXPLOSION_CHECK                 /* (X*)* */
+#endif	/* HAVE_MBREGEX_BACKTRACK */
 #define USE_INFINITE_REPEAT_MONOMANIAC_MEM_STATUS_CHECK /* /(?:()|())*\2/ */
 #define USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE     /* /\n$/ =~ "\n" */
 #define USE_WARNING_REDUNDANT_NESTED_REPEAT_OPERATOR