1 files changed, 0 insertions, 71 deletions
diff --git a/mbbsd/telnet.c b/mbbsd/telnet.c
index 4e7daf53..7cf1fee5 100644
--- a/mbbsd/telnet.c
+++ b/mbbsd/telnet.c
@@ -43,72 +43,6 @@ telnet_init(int do_init_cmd)
 	telnet_ctx_send_init_cmds(ctx);
 }
 
-#if defined(DBCSAWARE)
-ssize_t 
-dbcs_detect_evil_repeats(unsigned char *buf, ssize_t l)
-{
-    // determine DBCS repeats by evil clients (ref: io.c)
-    if (l == 2)
-    {
-	// XXX l=2 is dangerous. hope we are not in telnet IAC state...
-	// BS:	\b
-	// BS2:	\x7f
-	// DEL2: Ctrl('D') (KKMan3 also treats Ctrl('D') as DBCS DEL)
-	if (buf[0] != buf[1])
-	    return l;
-
-	// Note: BS/DEL behavior on different clients:
-	// screen/telnet:BS=0x7F, DEL=^[3~
-	// PCMan2004:    BS=0x7F, DEL=^[3~
-	// KKMan3:       BS=0x1b, DEL=0x7F
-	// WinXP telnet: BS=0x1b, DEL=0x7F
-	if (buf[0] == '\b' ||
-	    buf[0] == '\x7f' ||
-	    buf[0] == Ctrl('D'))
-	    return l-1;
-    } 
-    else if (l == 6)
-    {
-	// RIGHT:   ESC_CHR "OC" or ESC_CHR "[C"
-	// LEFT:    ESC_CHR "OD" or ESC_CHR "[D"
-	if (buf[2] != 'C' && buf[2] != 'D')
-	    return l;
-
-	if ( buf[0] == ESC_CHR &&
-	    (buf[1] == '[' || buf[1] == 'O') &&
-	     buf[0] == buf[3] &&
-	     buf[1] == buf[4] &&
-	     buf[2] == buf[5])
-	    return l-3;
-    } 
-    else if (l == 8)
-    {
-	// RIGHT:   ESC_CHR "[OC"
-	// LEFT:    ESC_CHR "[OD"
-	// DEL:	    ESC_STR "[3~" // vt220
-	if (buf[2] != '3' && buf[2] != 'O')
-	    return l;
-
-	if (buf[0] != ESC_CHR ||
-	    buf[1] != '[' ||
-	    buf[4] != buf[0] ||
-	    buf[5] != buf[1] ||
-	    buf[6] != buf[2] ||
-	    buf[7] != buf[3])
-	    return l;
-
-	if (buf[2] == '3' &&
-	    buf[3] == '~')
-	    return l-4;
-
-	if ( buf[2] == 'O' &&
-	    (buf[3] == 'C' || buf[3] == 'D') )
-	    return l-4;
-    }
-    return l;
-}
-#endif
-
 /* tty_read
  * read from tty, process telnet commands if raw connection.
  * return: >0 = length, <=0 means read more, abort/eof is automatically processed.
@@ -122,11 +56,6 @@ tty_read(unsigned char *buf, size_t max)
     if(l == 0 || (l < 0 && !(errno == EINTR || errno == EAGAIN)))
 	abort_bbs(0);
 
-#if defined(DBCSAWARE)
-    if (ISDBCSAWARE() && HasUserFlag(UF_DBCS_DROP_REPEAT))
-	l = dbcs_detect_evil_repeats(buf, l);
-#endif
-
     if(!raw_connection || l <= 0)
 	return l;