input/wav: increase search range for data chunk, report errors

diff --git a/src/input/wav.c b/src/input/wav.c
index d1299cd3376671dfcd1a12a2cc8310476880b821..e04a00166658333b045901dc06c2bfa3fd9b4c6c 100644 (file)
--- a/src/input/wav.c
+++ b/src/input/wav.c
@@ -37,7 +37,7 @@
 #define MIN_DATA_CHUNK_OFFSET    45
 
 /* Expect to find the "data" chunk within this offset from the start. */
-#define MAX_DATA_CHUNK_OFFSET    256
+#define MAX_DATA_CHUNK_OFFSET    1024
 
 #define WAVE_FORMAT_PCM_         0x0001
 #define WAVE_FORMAT_IEEE_FLOAT_  0x0003
@@ -175,6 +175,9 @@ static int find_data_chunk(GString *buf, int initial_offset)
                offset += 8 + RL32(buf->str + offset + 4);
        }
 
+       if (offset > MAX_DATA_CHUNK_OFFSET)
+               return -1;
+
        return offset;
 }