CHOP-662 - initial fix to problems with regex characters in Group names

causing the LLDirIterator to crash the viewer when opening chat logs

3 files changed, 80 insertions, 4 deletions

diff --git a/indra/llvfs/CMakeLists.txt b/indra/llvfs/CMakeLists.txt
index b6d1ce61e5..f89da4d6c5 100644
--- a/indra/llvfs/CMakeLists.txt
+++ b/indra/llvfs/CMakeLists.txt
@@ -80,6 +80,7 @@ if (LL_TESTS)
 	# UNIT TESTS
 	SET(llvfs_TEST_SOURCE_FILES
 	  # none so far
+	  lldiriterator.cpp
 	  )
 	LL_ADD_PROJECT_UNIT_TESTS(llvfs "${llvfs_TEST_SOURCE_FILES}")
 
diff --git a/indra/llvfs/lldiriterator.cpp b/indra/llvfs/lldiriterator.cpp
index 041436ed92..3b132862ad 100644
--- a/indra/llvfs/lldiriterator.cpp
+++ b/indra/llvfs/lldiriterator.cpp
@@ -121,6 +121,14 @@ bool LLDirIterator::Impl::next(std::string &fname)
 	return found;
 }
 
+/*
+converts the incoming glob into a regex. This involves
+converting incoming glob expressions to regex equivilents and
+at the same time, escaping any regex meaningful characters which
+do not have glob meaning, i.e.
+            .()+|^$ 
+in the input
+*/
 std::string glob_to_regex(const std::string& glob)
 {
 	std::string regex;
@@ -135,9 +143,6 @@ std::string glob_to_regex(const std::string& glob)
 
 		switch (c)
 		{
-			case '.':
-				regex+="\\.";
-				break;
 			case '*':
 				if (glob.begin() == i)
 				{
@@ -170,7 +175,15 @@ std::string glob_to_regex(const std::string& glob)
 			case '!':
 				regex+= square_brace_open ? '^' : c;
 				break;
-			default:
+			case '.': // This collection have different regex meaning
+			case '^': // And so need escaping
+			case '(': 
+			case ')':
+			case '+':
+			case '|':
+			case '$':
+                regex+='\\'; 
+            default:
 				regex+=c;
 				break;
 		}
diff --git a/indra/llvfs/tests/lldiriterator_test.cpp b/indra/llvfs/tests/lldiriterator_test.cpp
new file mode 100644
index 0000000000..7c2cd49e41
--- /dev/null
+++ b/indra/llvfs/tests/lldiriterator_test.cpp
@@ -0,0 +1,62 @@
+/**
+ * @file lldiriterator_test.cpp
+ * @date 2011-06
+ * @brief LLDirIterator test cases.
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.,
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "lltut.h"
+#include "../lldiriterator.h"
+
+
+namespace tut
+{
+    
+    struct LLDirIteratorFixture
+    {
+        LLDirIteratorFixture()
+        {
+        }
+    };
+    typedef test_group<LLDirIteratorFixture> LLDirIteratorTest_factory;
+    typedef LLDirIteratorTest_factory::object LLDirIteratorTest_t;
+    LLDirIteratorTest_factory tf("LLDirIterator");
+
+    /*
+    CHOP-662 was originally introduced to deal with crashes deleting files from
+    a directory (VWR-25500). However, this introduced a crash looking for 
+    old chat logs as the glob_to_regex function in lldiriterator wasn't escaping lots of regexp characters
+    */
+    void test_chop_662(void)
+    {
+        LLDirIterator iter(".","+bad-group-name]+??-??.*");
+    }
+
+    template<> template<>
+	void LLDirIteratorTest_t::test<1>()
+    {
+       test_chop_662();
+    }
+
+}
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