From 9c09a82a72f1ae273b25a8cb712ba601e248934a Mon Sep 17 00:00:00 2001
From: piaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>
Date: Sun, 26 Feb 2012 06:09:17 +0000
Subject: Add def to prevent malicious hidden text.

git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5572 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
---
 pttbbs/mbbsd/pfterm.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/pttbbs/mbbsd/pfterm.c b/pttbbs/mbbsd/pfterm.c
index 849ba49a..f4d95c05 100644
--- a/pttbbs/mbbsd/pfterm.c
+++ b/pttbbs/mbbsd/pfterm.c
@@ -1310,14 +1310,19 @@ outc(unsigned char c)
     else // normal characters
     {
         assert (ft.x >= 0 && ft.x < ft.cols);
-
-        // normal characters
-        FTC = c;
+#ifdef PFTERM_DISABLE_HIDDEN_MESSAGE
+        if (FTATTR_GETFG(ft.attr) == FTATTR_GETBG(ft.attr) &&
+            (ft.attr & ~(FTATTR_FGMASK | FTATTR_BGMASK)) == 0)
+            c = ' ';
+#endif
 #ifdef FTATTR_TRANSPARENT
         if (ft.attr != FTATTR_TRANSPARENT)
 #endif // FTATTR_TRANSPARENT
         FTA = ft.attr;
 
+        // normal characters
+        FTC = c;
+
         ft.x++;
         // XXX allow x == ft.cols?
         if (ft.x >= ft.cols)
-- 
cgit v1.2.3