recognize faulty hash

diff --git a/ED2KLink.cpp b/ED2KLink.cpp
index e1ec2ff..05b8d97 100644 (file)
--- a/ED2KLink.cpp
+++ b/ED2KLink.cpp
@@ -96,7 +96,10 @@ ED2KLink* ED2KLink::parseED2KLink(const char* buffer) {
                char byteBuffer[3];
                byteBuffer[2] = '\0';
                memcpy(byteBuffer, tempBuffer + hashIndex * 2, 2);
-               sscanf(byteBuffer, "%hhX", &hash[hashIndex]);
+               if (sscanf(byteBuffer, "%hhX", &hash[hashIndex]) != 1) {
+                       GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] could not parse ‘%c%c’ into a byte.\n", __FILE__, __LINE__, *(byteBuffer), *(byteBuffer + 1));
+                       return NULL;
+               }
                GlobalSettings::isVerbose() && fprintf(stderr, "[%s:%d] parsed ‘%c%c’ as %02x.\n", __FILE__, __LINE__, *(byteBuffer), *(byteBuffer + 1), hash[hashIndex]);
        }