From 555e0211c8c67814546eca1c572af78840902eba Mon Sep 17 00:00:00 2001
From: Luis de Bethencourt <luis.bg@samsung.com>
Date: Thu, 26 Mar 2015 17:01:06 +0000
Subject: [PATCH] gstvalue: only unwrap string delimited with "

Don't unwrap strings that start but don't finish with a double quote. If a
string is delimited by two quotes we unescape them and any special characters
in the middle (like \" or \\). If the first character or the last character
aren't a quote we assume it's part of an unescaped string.

Moved some deserialize_string unit tests because we don't try to unwrap strings
missing that second quote anymore.

https://bugzilla.gnome.org/show_bug.cgi?id=688625
---
 gst/gstvalue.c             |  3 ++-
 tests/check/gst/gstvalue.c | 13 +++++--------
 2 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/gst/gstvalue.c b/gst/gstvalue.c
index 031c02a0c1..21771ebfdf 100644
--- a/gst/gstvalue.c
+++ b/gst/gstvalue.c
@@ -3012,12 +3012,13 @@ gst_value_deserialize_string (GValue * dest, const gchar * s)
   if (G_UNLIKELY (strcmp (s, "NULL") == 0)) {
     g_value_set_string (dest, NULL);
     return TRUE;
-  } else if (G_LIKELY (*s != '"')) {
+  } else if (G_LIKELY (*s != '"' || s[strlen (s) - 1] != '"')) {
     if (!g_utf8_validate (s, -1, NULL))
       return FALSE;
     g_value_set_string (dest, s);
     return TRUE;
   } else {
+    /* strings delimited with double quotes should be unwrapped */
     gchar *str = gst_string_unwrap (s);
     if (G_UNLIKELY (!str))
       return FALSE;
diff --git a/tests/check/gst/gstvalue.c b/tests/check/gst/gstvalue.c
index 7b913f58a0..3be87c40b1 100644
--- a/tests/check/gst/gstvalue.c
+++ b/tests/check/gst/gstvalue.c
@@ -542,21 +542,18 @@ GST_START_TEST (test_deserialize_string)
     "\"foo\\%\"", "foo%"}, {
     "\"0123456789_-+/:.\"", "0123456789_-+/:."}, {
     "\"Hello\\ World\"", "Hello World"}, {
+    "\"Hello\\ World", "\"Hello\\ World"}, {
+    "\"\\", "\"\\"}, {
+    "\"\\0", "\"\\0"}, {
     "", ""},                    /* empty strings */
     {
     "\"\"", ""},                /* quoted empty string -> empty string */
         /* Expected FAILURES: */
     {
-    "\"", NULL},                /* missing second quote */
-    {
-    "\"Hello\\ World", NULL},   /* missing second quote */
-    {
-    "\"\\", NULL},              /* quote at end, missing second quote */
-    {
-    "\"\\0", NULL},             /* missing second quote */
-    {
     "\"\\0\"", NULL},           /* unfinished escaped character */
     {
+    "\"", NULL},                /* solitary quote */
+    {
     "\" \"", NULL},             /* spaces must be escaped */
 #if 0
         /* FIXME 0.9: this test should fail, but it doesn't */