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telnet.c

Amendments on September 18, 2026

telnet: Fix some corner cases, add rxvt as vt100 terminal
jcs made amendment 637 13 days ago

telnet: Enforce minimum columns/lines in NAWS handling
jcs made amendment 636 13 days ago

Amendments on October 23, 2025

telnet: Adapt to UDPRelease change
jcs made amendment 601 11 months ago

Amendments on February 19, 2024

telnet: Static init nit
These are zeroed by default but just make it match the others
jcs made amendment 595 over 2 years ago

Amendments on February 13, 2024

logger: Add RFC3164 (BSD) syslog support
Log everything at system.notice for now
jcs made amendment 585 over 2 years ago

Amendments on December 2, 2023

telnet: Speed up initial IAC negotiation to avoid delay after connect
Extract output IAC escaping from telnet_output so telnet_output_iac
can call it to put data into node->obuf without actually flushing it
to the network. Since the initial IAC negotiation will have a bunch
of back and forth, this lets us queue up a bunch of outgoing data
that we can flush once.
Also avoid sending DO NEWENV unless we're talking to the trusted
proxy, since we only need that to receive REMOTE_ADDR. Otherwise
we'll waste time and packets receiving junk like the telnet user's
DISPLAY or XAUTHORITY variables.
jcs made amendment 573 over 2 years ago

Amendments on November 28, 2023

*: Move views out of database to flat files
Remove half-baked view editor and cache file contents in memory.
Add a sysop menu option to reload them.
When opening the database, if the command key is held down, prevent
opening the last-opened database and prompt for a different one.
jcs made amendment 566 over 2 years ago

Amendments on November 21, 2023

telnet: Don't lookup location of the trusted proxy, look it up later
Once we get the REMOTE_ADDR NEWENV, do the lookup then and update
the session log.
jcs made amendment 561 over 2 years ago

Amendments on November 9, 2023

*: Do config changes on the fly, restarting modules as needed
Annotate each config option with which component it needs restarted
when it changes and do those after saving from the sysop menu. This
also provides the ability to log each changed config option with its
old and new values.
jcs made amendment 531 over 2 years ago

Amendments on June 15, 2023

telnet: Do ipdb lookup on connect, log location and store in session
jcs made amendment 511 over 3 years ago

Amendments on May 1, 2023

telnet: Handle (ignore) IAC NOP, don't put unhandled IACs in output
jcs made amendment 501 over 3 years ago

Amendments on April 27, 2023

telnet: When escaping IACs, leave room in case one is the final byte
jcs made amendment 493 over 3 years ago

Amendments on April 26, 2023

telnet: Crank obuf size, send DO BINARY and WILL BINARY
jcs made amendment 487 over 3 years ago

Amendments on March 2, 2023

telnet: Handle malloc failure
jcs made amendment 348 over 3 years ago

Amendments on February 5, 2023

*: Minor fixes found by cppcheck and scan-build
Mostly unused variables
jcs made amendment 300 over 3 years ago

Amendments on October 26, 2022

telnet: Add failsafe to avoid sending more than sizeof(obuf)
jcs made amendment 267 over 3 years ago

Amendments on October 1, 2022

logger: There will only be one, stop passing object around
This also helps at shutdown to know when we can no longer log.
jcs made amendment 261 over 4 years ago

Amendments on September 23, 2022

telnet: Limit NAWS update logging
A user frequently making adjustments to their terminal window can
flood us with NAWS commands, we don't need to log every one of them.
jcs made amendment 257 over 4 years ago

Amendments on August 14, 2022

logger: Add buffered logging, support logging without updating window
During telnet negotiation, many lines are logged in quick succession
which means we spend a lot of time updating the log TextEdit. Just
buffer these logs and spit them out all at once upon login or
disconnection, so the user's login prompt is immediately responsive.
Rename session_log to session_logf while I'm in here, to reflect that
it's a format-string function.
jcs made amendment 245 over 4 years ago

Amendments on August 11, 2022

telnet: Increase IAC SB buffer, log when it overflows
macOS telnet clients have a very long DISPLAY variable that was
reaching our limit of iac_sb, which then spilled into the login field
since we stop treating further data as IAC SB data.
jcs made amendment 240 over 4 years ago
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