Raman Gupta created SSHD-679:
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Summary: Support (or ignore) IUTF8 terminal mode (42)
Key: SSHD-679
URL: https://issues.apache.org/jira/browse/SSHD-679
Project: MINA SSHD
Issue Type: Improvement
Affects Versions: 1.2.0, 1.1.1, 0.14.0
Reporter: Raman Gupta
My version of openssh running on Fedora 23 is:
OpenSSH_7.2p2, OpenSSL 1.0.2h-fips 3 May 2016
When connecting to an sshd server using this client, the client transmits
terminal mode 42 (IUTF8 terminal, see
https://tools.ietf.org/html/draft-sgtatham-secsh-iutf8-01).
The server however does not define this mode and breaks out of the loop
processing the client terminal modes with the warning:
Unknown pty opcode value: 42
As per the spec (https://tools.ietf.org/html/rfc4254#page-19) only opcodes 160
to 255 should cause parsing to stop. Other opcodes, if not understood by the
server (such as opcode 42) should be ignored. However, currently opcodes less
than 160 cause parsing to stop as well.
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