From a87a1f8ced054aba80ed6f15a0ce2c47827c394d Mon Sep 17 00:00:00 2001
From: Dmitry Skorykh <dmitry.skorykh@emlid.com>
Date: Fri, 24 Jun 2022 13:35:40 +0300
Subject: mm-sms-part-3gpp: sms_decode_text: avoid decoding an empty text
 message

Fix segfault that can occur during message text decoding if there are no
elements in SMS text
---
 src/mm-sms-part-3gpp.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src')

diff --git a/src/mm-sms-part-3gpp.c b/src/mm-sms-part-3gpp.c
index aeb9decb..1bbe1a0a 100644
--- a/src/mm-sms-part-3gpp.c
+++ b/src/mm-sms-part-3gpp.c
@@ -252,6 +252,14 @@ sms_decode_text (const guint8   *text,
                  gpointer        log_object,
                  GError        **error)
 {
+    if (!text || len == 0) {
+        g_set_error (error,
+                     MM_CORE_ERROR,
+                     MM_CORE_ERROR_FAILED,
+                     "Skipping SMS text: SMS text has no elements to decode");
+        return NULL;
+    }
+
     if (encoding == MM_SMS_ENCODING_GSM7) {
         g_autoptr(GByteArray)  unpacked_array = NULL;
         guint8                *unpacked = NULL;
-- 
cgit v1.2.3-70-g09d2