[gsupplicant] Treat SSIDs consisting of all zeros as empty. Fixes JB#…

…38141
sailfishos · Mar 22, 2017 · 41400d0 · 41400d0
1 parent ac79e88
commit 41400d0
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Showing 2 changed files with 31 additions and 4 deletions.
diff --git a/src/gsupplicant_util.c b/src/gsupplicant_util.c
@@ -444,9 +444,15 @@ gsupplicant_utf8_from_bytes(
     GBytes* bytes)
 {
     if (bytes) {
-        gsize size = 0;
+        gsize i, size = 0;
+        gboolean empty = TRUE;
         const char* ptr = g_bytes_get_data(bytes, &size);
-        if (size) {
+        for (i=0; i<size && empty; i++) {
+            if (ptr[i]) {
+                empty = FALSE;
+            }
+        }
+        if (!empty) {
             GString* buf = g_string_sized_new(size);
             while (size) {
                 const gchar* invalid = NULL;

diff --git a/test/test_util/test_util.c b/test/test_util/test_util.c
@@ -466,6 +466,15 @@ static const guint8 test_util_utf8_data_3_in[] = {
 static const guint32 test_util_utf8_data_3_ucs4[] = {
     0xfffd, 0x0442, 0x0435, 0x0441, 0x0442
 };
+static const guint8 test_util_utf8_data_4_in[] = {
+    0x00, 0xd1, 0x82
+};
+static const guint32 test_util_utf8_data_4_ucs4[] = {
+    0xfffd, 0x0442
+};
+static const guint8 test_util_utf8_data_5_in[] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
 static const TestUTF8Data test_util_utf8_data[] = {
     {
         TEST_PREFIX "utf8_from_bytes1",
@@ -479,6 +488,14 @@ static const TestUTF8Data test_util_utf8_data[] = {
         TEST_PREFIX "utf8_from_bytes3",
         test_util_utf8_data_3_in, G_N_ELEMENTS(test_util_utf8_data_3_in),
         test_util_utf8_data_3_ucs4, G_N_ELEMENTS(test_util_utf8_data_3_ucs4)
+    },{
+        TEST_PREFIX "utf8_from_bytes4",
+        test_util_utf8_data_4_in, G_N_ELEMENTS(test_util_utf8_data_4_in),
+        test_util_utf8_data_4_ucs4, G_N_ELEMENTS(test_util_utf8_data_4_ucs4)
+    },{
+        TEST_PREFIX "utf8_from_bytes5",
+        test_util_utf8_data_5_in, G_N_ELEMENTS(test_util_utf8_data_5_in),
+        NULL, 0
     }
 };
 
@@ -508,9 +525,13 @@ test_util_utf8_from_bytes1(
         glong len = 0;
         gunichar* ucs4 = g_utf8_to_ucs4(utf8, -1, NULL, &len, &error);
         g_assert(!error);
-        g_assert(test->ucs4);
         g_assert(test->ucs4_len == len);
-        g_assert(!memcmp(ucs4, test->ucs4, sizeof(guint32)*len));
+        if (len) {
+            g_assert(test->ucs4);
+            g_assert(!memcmp(ucs4, test->ucs4, sizeof(guint32)*len));
+        } else {
+            g_assert(!ucs4[0]);
+        }
         g_free(utf8);
         g_free(ucs4);
     } else {