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Block arrow keys in sshd server so that it is not passed to shell/cmd or echoed

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For now we avoid sending the 4 arrow keys to the shell or echo it to the
remote side. as cmd.exe or powershell does not process it correctly in
stream output device mode we run win32 sshd server.
This commit is contained in:
quamrulmina 2015-11-06 17:13:57 -06:00
parent 9f26b75d5d
commit 9c645a210f
1 changed files with 8 additions and 1 deletions
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9
channels.c
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@ -2480,8 +2480,15 @@ channel_input_data(int type, u_int32_t seq, void *ctxt)
}
}
else {
// avoid sending the 4 arrow keys out to remote for now "ESC[A" ..
if ( (c->isatty) && (data_len ==3) && (data[0] == '\033') && (data[1] == '[')) {
if ( ( data[2] == 'A') || (data[2] == 'B') || (data[2] == 'C') || (data[2] == 'D'))
packet_check_eom();
return 0;
}
buffer_append(&c->output, data, data_len); // it is the sshd server, so pass it on
if ( c->isatty ) { // we echo the data if it is sshd server and pty interactive mode
if ( c->isatty ) { // we echo the data if it is sshd server and pty interactive mode
if ( (data_len ==1) && (data[0] == '\b') ) {
if (charinline >0) {
buffer_append(&c->input, "\b \b", 3); // for backspace, we need to send space and another backspace for visual erase