From 390e33436b0706dc2a77683b87235ff811d23d26 Mon Sep 17 00:00:00 2001
From: Tatsuya Kinoshita <tats@debian.org>
Date: Fri, 18 Nov 2016 22:08:33 +0900
Subject: Prevent global-buffer-overflow in wc_any_to_ucs()

Bug-Debian: https://github.com/tats/w3m/issues/43
Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=716bc126638393c733399d11d3228edb82877faa
Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=88110c2658ad9badd292430c75ebb0444c3312eb
---
 libwc/ucs.c   |  1 +
 libwc/ucs.map | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+)

(limited to 'libwc')

diff --git a/libwc/ucs.c b/libwc/ucs.c
index 061e1ce..05e5e85 100644
--- a/libwc/ucs.c
+++ b/libwc/ucs.c
@@ -177,6 +177,7 @@ wc_any_to_ucs(wc_wchar_t cc)
 	    return WC_C_UCS2_EURO;
 	}
 	map = pcs_ucs_map[f - WC_F_PCS_BASE];
+	map_size = pcs_ucs_map_size[f - WC_F_PCS_BASE];
 	cc.code &= 0x7f;
 	break;
     case WC_CCS_A_PCSW:
diff --git a/libwc/ucs.map b/libwc/ucs.map
index 5d6f688..bed5dff 100644
--- a/libwc/ucs.map
+++ b/libwc/ucs.map
@@ -175,6 +175,49 @@ static wc_uint16 *pcs_ucs_map[] = {
   NULL,			/* (Raw) */
 };
 
+static wc_uint32 pcs_ucs_map_size[] = {
+  0x80,			/* cp437_ucs_map */
+  0x80,			/* cp737_ucs_map */
+  0x80,			/* cp775_ucs_map */
+  0x80,			/* cp850_ucs_map */
+  0x80,			/* cp852_ucs_map */
+  0x80,			/* cp855_ucs_map */
+  0x80,			/* cp856_ucs_map */
+  0x80,			/* cp857_ucs_map */
+  0x80,			/* cp860_ucs_map */
+  0x80,			/* cp861_ucs_map */
+  0x80,			/* cp862_ucs_map */
+  0x80,			/* cp863_ucs_map */
+  0x80,			/* cp864_ucs_map */
+  0x80,			/* cp865_ucs_map */
+  0x80,			/* cp866_ucs_map */
+  0x80,			/* cp869_ucs_map */
+  0x80,			/* cp874_ucs_map */
+  0x80,			/* cp1006_ucs_map */
+  0x80,			/* cp1250_ucs_map */
+  0x80,			/* cp1251_ucs_map */
+  0x80,			/* cp1252_ucs_map */
+  0x80,			/* cp1253_ucs_map */
+  0x80,			/* cp1254_ucs_map */
+  0x80,			/* cp1255_ucs_map */
+  0x80,			/* cp1256_ucs_map */
+  0x80,			/* cp1257_ucs_map */
+  0x80,			/* cp1258_ucs_map */
+  0,			/* NULL */
+  0x80,			/* tcvn57121_ucs_map */
+  0x20,			/* tcvn57122_ucs_map */
+  0,			/* NULL */
+  0x80,			/* viscii111_ucs_map */
+  0x20,			/* viscii112_ucs_map */
+  0x80,			/* vps1_ucs_map */
+  0x20,			/* vps2_ucs_map */
+  0x80,			/* koi8r_ucs_map */
+  0x80,			/* koi8u_ucs_map */
+  0x80,			/* nextstep_ucs_map */
+  0,			/* NULL */
+  0,			/* NULL (Raw) */
+};
+
 static wc_uint16 *cs94w_ucs_map[] = {
   jisx0208x02131_ucs_map,	/* 40 (JIS C 6226) */
   gb2312_ucs_map,		/* 41 (GB 2312) */
-- 
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