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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-01-11 17:21:17 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-01-11 23:41:42 -0500
commit7f76961982e03d4d5f781e7e7113fc7eff970f82 (patch)
treeb53ec520a161642ffcba434526eec371972b961d /src/test/test-util.c
parente01ff428993f0c126f010b5625002e6a0a8aff4a (diff)
shared/util: respect buffer boundary on incomplete escape sequences
cunescape_length_with_prefix() is called with the length as an argument, so it cannot rely on the buffer being NUL terminated. Move the length check before accessing the memory. When an incomplete escape sequence was given at the end of the buffer, c_l_w_p() would read past the end of the buffer. Fix this and add a test.
Diffstat (limited to 'src/test/test-util.c')
-rw-r--r--src/test/test-util.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/src/test/test-util.c b/src/test/test-util.c
index 1e50a29f7..4bb51545b 100644
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -416,8 +416,24 @@ static void test_cescape(void) {
static void test_cunescape(void) {
_cleanup_free_ char *unescaped;
- assert_se(unescaped = cunescape("abc\\\\\\\"\\b\\f\\a\\n\\r\\t\\v\\003\\177\\234\\313\\000\\x00"));
- assert_se(streq(unescaped, "abc\\\"\b\f\a\n\r\t\v\003\177\234\313\\000\\x00"));
+ unescaped = cunescape("abc\\\\\\\"\\b\\f\\a\\n\\r\\t\\v\\003\\177\\234\\313\\000\\x00");
+ assert_se(streq_ptr(unescaped, "abc\\\"\b\f\a\n\r\t\v\003\177\234\313\\000\\x00"));
+
+ /* incomplete sequences */
+ unescaped = cunescape("\\x0");
+ assert_se(streq_ptr(unescaped, "\\x0"));
+
+ unescaped = cunescape("\\x");
+ assert_se(streq_ptr(unescaped, "\\x"));
+
+ unescaped = cunescape("\\");
+ assert_se(streq_ptr(unescaped, "\\"));
+
+ unescaped = cunescape("\\11");
+ assert_se(streq_ptr(unescaped, "\\11"));
+
+ unescaped = cunescape("\\1");
+ assert_se(streq_ptr(unescaped, "\\1"));
}
static void test_foreach_word(void) {