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2021-06-28FreeBSD: Use capsicum_helpers.hJune McEnroe
2021-06-25Set MANDIR in chrootJune McEnroe
2021-06-25FreeBSD: Limit rights on log directoryJune McEnroe
2021-06-25FreeBSD: Limit rights on save fileJune McEnroe
2021-06-25FreeBSD: Limit rights on stdio and socketJune McEnroe
2021-06-25Remove explicit tls_handshake(3) from ircConnectJune McEnroe
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.
2021-06-25Move setting CLOEXEC on socket to ircConnectJune McEnroe
2021-06-25FreeBSD: Enter capabilities mode if restrictedJune McEnroe
2021-06-25Keep log directory open, use mkdirat(2) and openat(2)June McEnroe
2021-06-24Encourage packagers to patch in text macrosJune McEnroe
Maybe no one will ever do it but I think it's a fun idea.
2021-06-24Stop at previous \ when expanding macrosJune McEnroe
There was no reason to ever require whitespace before the macro name.
2021-06-21Replace SIGWINCH XXX comment with better explanationJune McEnroe
2021-06-21Register SIGWINCH handler before TLS connectKlemens Nanni
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.
2021-06-21Handle EINTR from connect(2) gracefullyKlemens Nanni
Resizing the window early on may return early due to SIGWINCH. Continue asynchronously in that case instead of exiting.
2021-06-21Use NS and CS server aliasesJune McEnroe
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.
2021-06-21Open log files with CLOEXECJune McEnroe
2021-06-21Open save file with CLOEXECJune McEnroe
Otherwise a lingering process from /copy for example could hold the lock.
2021-06-20Use "secure" libtls ciphersKlemens Nanni
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
2021-06-20OpenBSD: Only unveil used directoriesKlemens Nanni
dataMkdir() already picked the appropiate directory so make it return that such that unveilData() can go as only that one directory needs unveiling.
2021-06-20Handle "\1ACTION\1" empty actionsJune McEnroe
2021-06-20Don't match actions in noticesJune McEnroe
2021-06-20Handle TLS_WANNT_POLL{IN,OUT} from tls_handshake(3)June McEnroe
For blocking sockets it should be retried immediately.
2021-06-18Add -m mode option to set user modesJune McEnroe
2021-06-17Handle 338 as whois replyJune McEnroe
Used by Solanum for "actually using host".
2021-06-17Match window substrings case-sensitivelyJune McEnroe
Case-insensitivity was copied from regular complete(), but other commands which take substrings (/open and /copy) match case-sensitively.
2021-06-17Match windows by substring in /windowJune McEnroe
This could just iterate over idNames instead, but using complete means more recently used windows will match first.
2021-06-17Clean up if restricted && logEnable, pipe creationJune McEnroe
2021-06-17Add mailing list archive to READMEJune McEnroe
2021-06-17chat.tmux.conf: Make window selection hotkeys match window numbersKlemens Nanni
The 'pick chat network' binding on F1 lists tmux windows as follows and tmux's `choose-tree -Z' lets you jump to the window by pressing the key denoted inside parantheses. Set `base-index 1' so as to make window indices match up the hotkey number instead of being off-by-one due to the session itself being the first entry in the list. (0) - chat-5: 8 windows (group chat: chat-0,chat-1,chat-2,chat-3,chat-4,chat-5,chat-6) (attached) (1) ├─> 1: hackint: "example.com" (2) ├─> 2: efnet: "example.com" ... PS: Update existing sessions by updating chat.tmux.conf, pressing F5 then running `prefix-: move-window -r' to renumber all windows.
2021-06-15Send PINGs when server is quiet and die if no responseJune McEnroe
Every time we receive from the server, reset a timer. The first time the timer triggers, send a PING. The second time the timer triggers, die from ping timeout. I'm not sure about these two intervals: 2 minutes of idle before a PING, 30s for the server to respond to the PING.
2021-06-15OpenBSD: Simplify promise creation after seprintf() introductionKlemens Nanni
Just truncate the initial promises back to the final ones after pledging for the first time, saving code and memory. Assign `ptr' in all initial `seprintf()' calls for consistency while here.
2021-06-14OpenBSD: pledge final promises earlierKlemens Nanni
No need to wait for so long. This also brings all the pledge code on one screen and helps show how ircConnect() is the only relevant part in between initial and final promises.
2021-06-14Treat `-T's optional argument as optionalKlemens Nanni
`-T[format]' is not possible with getopt(3) but getopt_long(3) supports "T::" exactly for that, so make the command line option go in line with configuration files and documentation. While here, check `has_arg' explicitly as getopt_long(3) only documents mnemonic values not numerical ones.
2021-06-14Add \com text macroJune McEnroe
2021-06-13/exec without controlling terminalKlemens Nanni
Otherwise "/exec sh </dev/tty" takes over and catgirl must effectively be killed to stop the madness; with this diff: catgirl input| /exec sh </dev/tty catgirl output| /bin/sh: cannot open /dev/tty: Device not configured catgirl output| Process exits with status 1 Do the same for `-C/Copy', `-N/notify' and `-O/open' alike.
2021-06-13Exit on data directory creation errorKlemens Nanni
No point in creating (sub)directories when the given root failed already as is the case when e.g. XDG_DATA_HOME/catgirl/ itself is bogus (cleaned stderr intermangled with ncurses setup/catgirl output): $ env -i TERM=xterm XDG_DATA_HOME=/ ./catgirl -h irc.hackint.eu -n nobody -l catgirl: //catgirl/: Permission denied catgirl: //catgirl/log: No such file or directory catgirl: //catgirl/log/hackint: No such file or directory catgirl: //catgirl/log/hackint/NickServ: No such file or directory catgirl: //catgirl/: Permission denied catgirl: //catgirl/log/hackint/NickServ/2021-06-13.log: No such file or directory
2021-06-13OpenBSD: no need to read data files (logs)Klemens Nanni
One of the last changes missed this, but it is a NOOP anyway since "rpath" is not pledged any longer.
2021-06-12Reset formatting after realname in setnameJune McEnroe
Missed this one.
2021-06-11Fix unknown file signature errorJune McEnroe
2021-06-11Exclusively lock save fileJune McEnroe
Prevents two instances of catgirl from using the same save file and clobbering each other's data.
2021-06-11Open save file with "a+"June McEnroe
Avoids another small TOCTOU. Rewind before loading since "a+" sets the file position at the end. Remove unnecessary fseek after truncation, since "a+" always writes at the end of the file.
2021-06-11OpenBSD: Drop now unneeded file system access for save fileKlemens Nanni
All opening happens before unveil/pledge and the file handle is kept open read/write so it can be used without any pledge. Simpler/less code and less chances to write other files (accidentially).
2021-06-11Open save file once in uiLoad() and keep it open until uiSave()Klemens Nanni
Opening the same file *path* twice is a TOCTOU, although not a critical one: worst case we load from one file and save to another - the impact depends on how and when catgirl is started the next anyway. More importantly, keeping the file handle open at runtime allows us to drop all filesystem related promises for `-s/save' on OpenBSD. uiLoad() now opens "r+", meaning "Open for reading and writing." up front so uiSave() can write to it. In the case of a nonexistent save file, it now opens with "w" meaning "Open for writing. The file is created if it does not exist.", i.e. the same write/create semantics as "w" except uiLoad() no longer truncates. existing files. uiSave() now truncates the save file to avoid appending in general.
2021-06-11Rename file to saveFileKlemens Nanni
Separate churn from actual change in upcoming diff, no functional change.
2021-06-11OpenBSD: Hoist loading save file to drop filesystem read-accessKlemens Nanni
After TLS cert/key files, the save file is the only file being read from; do so before pleding and drop the "rpath" promise all together: log files will only be created and written to.
2021-06-11Match gemini URLsJune McEnroe
2021-06-10Avoid trailing comma in whois channels listsJune McEnroe
The format of the reply is defined as "<nick> :{[@|+]<channel><space>}".
2021-06-10Move unveilAll back into mainJune McEnroe
It doesn't do as much anymore, so move it back inline.
2021-06-10Only explicitly load the default CA file on OpenBSDJune McEnroe
2021-06-10OpenBSD: Drop now unneeded promise from initial pledgeKlemens Nanni
Both ssl(8) as well as ncurses(3) related files are now read completely by the time of ircConfig() and uiInitEarly() respectively, so read access to the filesystem is no longer needed at all unless the "log" or "save" options are used.