[SSHD-406] Stop parsing pty-req modes for undefined opcodes

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Assignee: Guillaume Nodet
• Reporter: Lyor Goldstein
• Created: 10/Feb/15 06:07
• Updated: 10/Feb/15 07:33
• Resolved: 10/Feb/15 07:33

Description

According to RFC 4254 - section 8:

Opcodes 160 to 255 are not yet defined, and cause parsing to stop.

The current code does not account for this option and might cause a NullPointerException if such opcodes are ever found. While not likely to be "found in nature", I believe the attached fix makes the code more robust.