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Messages don't really need to be hidden from <network> and I think
it could be confusing. Debug messages are all Cold so everything
would be hidden, and I want to keep them that way so that <debug>
doesn't clutter the status line needlessly.
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Silencing all windows with `M-+' (across multiple catgirl instances)
can be cumbersome, so provide an option to hide events, JOIN/PART noise,
etc. by default (each window's threshold will persist across load/save
cycles, i.e. when using the `-s/save' option).
Started out as `-v | visibility = threshold' to set a specific level,
the idea of a simpler toggle comes from june, who also squashed other
bugs (as usual).
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"base-index" expects integer values, tmux prints a warning at load-time
but otherwise ignores the configuration line.
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Follow a79a3fc "Use NS and CS server aliases".
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To keep the "main" sequence of events on one screen, while emphasizing
that sandboxing happens either side of ircConnect().
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ircConnect() yields a connected TCP socket after which "inet dns" is
no longer needed.
Possibly having loaded private key material, it seems a tad more
comforting to speak TLS *after* dropping any network capabilities
(except for socket read/write to the IRC host, of course).
Instead of moving the final pledge into irc.c:ircConnect() and thus
complicating the code around pledge across two C modules, simply
stub out an mnemonic ircHandshake() and call that explicitly.
This restores behaviour gained with
981ebc4 "Remove explicit tls_handshake(3) from ircConnect" which
was reverted for other reasons.
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No need to keep them at runtime; do so unconditionally for the sake of
simplicity.
Declare TLS config globally so ircConnect() can clear it and declare
both client and config statically as they are not used outside the irc.c
module.
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This reverts commit 981ebc4f12b88fbf52ed0352428a0612dd2c2568.
This broke `-o' to print the server certificate; without explicit
handshake there will be no tls_read(3) in this short code path.
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caph_stream_rights(3) doesn't exist before FreeBSD 13.0 and there's
no good reason to create that dependency. I still run servers on
FreeBSD 12.
This is a partial revert of cbc9545cb3f76733030c867f32ddb6a922cd2907.
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Mostly related to the utilities options.
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Should match the actual /cs command.
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Also send it directly using ircSend to avoid copying it and logging
it to <debug>.
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No point in trying to load a self-signed server certificate which we
are about to get from the server in the first place.
No need to read client certificate/key files when all we want is the
server certificate: in TLS the server always sends its certificate
before the client replies with any key material, i.e. catgirl sending
client data is useless.
catgirl(1) synopsis also notes how these options are irrelevant in the
-o/printCert case.
As a result, ircConfig() no longer requires any filesystem I/O in this
case, so hoist the purely network I/O related pledge() call to enforce
this -- more secure, self-documenting code!
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It's a short summary trying to cover different systems...
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This reads somewhat clearer as code is grouped by features instead of
security mechanisms by simply merging identical tests/conditions.
No functional change.
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Simplify logic and decouple the two features such that the code gets
even more self-ducumenting.
Previously `catgirl -R -l' would never unveil and therefore "proc exec"
could execute arbitrary paths without "rpath" as is usual unveil/pledge
semantic.
Now that `catgirl -l' alone triggers unveil(2), previous "proc exec"
alone is not enough since the first unveil() hides everything else from
filesystem; unveil all of root executable-only in order to restore
non-restrict mode's visibility.
This leaves yields distinct cases wrt. filesystem visibility
(hoisted save file functionality excluded):
1. restrict on, log off: no access
2. restrict on, log on : logdir write/create
3. restrict off, log off: all exec-only
4. restrict off, log on : logdir write/create, all else exec-only
In the first case `unveil("/", "")' could be used but with no benefit as
the later lack of "rpath wpath cpath", i.e. filesystem access is revoked
entirely by pledge alone already.
Practically, this does not change functionality but improves correctness
and readability.
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The restrict option now enables real sandboxing on the two main
target systems.
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The call to logOpen() will have already created the directory. Still
use dataMkdir() as a convenient way to get the created path.
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The first call to ircFormat, which calls tls_write(3) in turn, will
perform the handshake anyway. This way the handshake happens after
the final pledge(2) call.
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Maybe no one will ever do it but I think it's a fun idea.
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There was no reason to ever require whitespace before the macro
name.
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Otherwise resizing the terminal will end catgirl until a handler is
registered, e.g. while in ircConnect():
catgirl: tls_handshake: (null)
Hoist registration right after uiInitEarly() as earliest possible point
in main() since initscr(3) sets up various signals incl. SIGWINCH, i.e.
initialise `cursesWinch' afterwards to pick up curses(3)'s handler.
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Resizing the window early on may return early due to SIGWINCH.
Continue asynchronously in that case instead of exiting.
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I think I didn't use these originally because they were misconfigured
on tilde.chat, but they work now, and supposedly server aliases
should be more secure/reliable.
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Otherwise a lingering process from /copy for example could hold the
lock.
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d3e90b6 'Use libtls "compat" ciphers' from 2018 fell back to "compat"
ciphers to support irc.mozilla.org which now yields NXDOMAIN.
All modern networks (should) support secure ciphers, so drop the
hopefully unneeded list of less secure ciphers by avoiding
tls_config_set_ciphers(3) and therefore sticking to the "secure" aka.
"default" set of ciphers in libtls.
A quick check shows that almost all of the big/known IRC networks
support TLS1.3 already; those who do not at least comply with
SSL_CTX_set_cipher_list(3)'s "HIGH" set as can be tested like this:
echo \
irc.hackint.org \
irc.tilde.chat \
irc.libera.chat \
irc.efnet.nl \
irc.oftc.net |
xargs -tn1 \
openssl s_client -quiet -cipher HIGH -no_ign_eof -port 6697 -host
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dataMkdir() already picked the appropiate directory so make it
return that such that unveilData() can go as only that one directory
needs unveiling.
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For blocking sockets it should be retried immediately.
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Used by Solanum for "actually using host".
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Case-insensitivity was copied from regular complete(), but other
commands which take substrings (/open and /copy) match case-sensitively.
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This could just iterate over idNames instead, but using complete
means more recently used windows will match first.
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