From 72f3e3555b2a757e4b41eea0dd828dbdb04df037 Mon Sep 17 00:00:00 2001
From: Christopher Snowhill <kode54@gmail.com>
Date: Mon, 9 Jan 2017 09:24:44 -0800
Subject: [PATCH] Added sanity check to MCA decoder, fixes some odd rips I've
 just encountered.

---
 src/meta/mca.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/meta/mca.c b/src/meta/mca.c
index 518dd16b..42ec643c 100644
--- a/src/meta/mca.c
+++ b/src/meta/mca.c
@@ -11,7 +11,7 @@ VGMSTREAM * init_vgmstream_mca(STREAMFILE *streamFile) {
 	int channel_count;
 	int loop_flag;
 	int version;
-	size_t head_size, data_size;
+	size_t head_size, data_size, file_size;
 	off_t start_offset, coef_offset, coef_start, coef_shift;
 	int i, j;
 	int coef_spacing;
@@ -78,6 +78,16 @@ VGMSTREAM * init_vgmstream_mca(STREAMFILE *streamFile) {
         coef_offset = coef_start + coef_shift * 0x14;
 	}
 
+	/* sanity check */
+	file_size = get_streamfile_size(streamFile);
+
+	if (start_offset + data_size > file_size) {
+		if (head_size + data_size > file_size)
+			goto fail;
+
+		start_offset = file_size - data_size;
+	}
+
 	
 	/* set up ADPCM coefs  */
 	for (j = 0; j<vgmstream->channels; j++) {