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authorpiaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>2009-09-23 00:04:54 +0800
committerpiaip <piaip@63ad8ddf-47c3-0310-b6dd-a9e9d9715204>2009-09-23 00:04:54 +0800
commit18f116f941b3407cbdf0e2233a1871a63bfa6c9c (patch)
tree687515c41973c4f6b529655ea7c4f107164d6b2c
parent4b05e9ccfe2761c28dbaba77f67278bcb5396de4 (diff)
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* fix DBCS detection: DEL is 0x7f not 0x1f
git-svn-id: http://opensvn.csie.org/pttbbs/trunk@4880 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
-rw-r--r--pttbbs/mbbsd/telnet.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/pttbbs/mbbsd/telnet.c b/pttbbs/mbbsd/telnet.c
index 933f9f3c..22ad6234 100644
--- a/pttbbs/mbbsd/telnet.c
+++ b/pttbbs/mbbsd/telnet.c
@@ -53,11 +53,18 @@ dbcs_detect_evil_repeats(unsigned char *buf, ssize_t l)
// 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] == '\x1f')
+ buf[0] == '\x7f' ||
+ buf[0] == Ctrl('D'))
return l-1;
}
else if (l == 6)