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<https://www.gnu.org/licenses/why-not-lgpl.html>.

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PREFIX = /usr/local
MANDIR = ${PREFIX}/share/man
CFLAGS += -std=c11 -Wall -Wextra -Wpedantic
LDLIBS = -lcrypto -ltls -lncursesw
-include config.mk
OBJS += chat.o
OBJS += command.o
OBJS += complete.o
OBJS += config.o
OBJS += edit.o
OBJS += handle.o
OBJS += irc.o
OBJS += ui.o
OBJS += url.o
OBJS += xdg.o
dev: tags all
all: catgirl
catgirl: ${OBJS}
${CC} ${LDFLAGS} ${OBJS} ${LDLIBS} -o $@
${OBJS}: chat.h
tags: *.h *.c
ctags -w *.h *.c
clean:
rm -f tags catgirl ${OBJS}
install: catgirl catgirl.1
install -d ${PREFIX}/bin ${MANDIR}/man1
install catgirl ${PREFIX}/bin
gzip -c catgirl.1 > ${MANDIR}/man1/catgirl.1.gz
uninstall:
rm -f ${PREFIX}/bin/catgirl ${MANDIR}/man1/catgirl.1.gz

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.Dd February 11, 2020
.Dt README 7
.Os "Causal Agency"
.
.Sh NAME
.Nm catgirl
.Nd IRC client
.
.Sh DESCRIPTION
.Xr catgirl 1
is a TLS-only terminal IRC client.
.
.Ss Notable Features
.Bl -bullet
.It
Tab complete:
most recently seen or mentioned nicks
are completed first.
Commas are inserted between multple nicks.
.It
Indicators:
the prompt clearly shows whether input
will be interpreted as a command
or sent as a message.
An indicator appears when scrolled up
in the chat history.
.It
Nick coloring:
color generation based on usernames
remains stable across nick changes.
Mentions of users in messages are colored.
.It
URL detection:
recent URLs from a particular user
or matching a substring
can be opened or copied.
.It
History:
window contents can be saved
and restored on startup.
.El
.
.Ss Non-features
.Bl -bullet
.It
Dynamic configuration:
all configuration happens
in a simple text file
or on the command line.
.It
Multi-network:
a terminal multiplexer such as
.Xr screen 1
or
.Xr tmux 1
(or just your regular terminal emulator tabs)
can be used to connect
.Nm
to multiple networks.
.It
Reconnection:
when the connection to the server is lost,
.Nm
exits.
It can be run in a loop
or connected to a bouncer,
such as
.Lk https://git.causal.agency/pounce "pounce" .
.It
Cleartext IRC:
TLS is now ubiquitous
and certificates are easy to obtain.
.El
.
.Sh INSTALLING
.Nm
requires LibreSSL
.Pq Fl ltls
and ncurses
.Pq Fl lncursesw .
It primarily targets
.Fx
and macOS,
as well as Linux.
.Bd -literal -offset indent
\&./configure
make all
sudo make install PREFIX=/usr/local
.Ed
.
.Sh FILES
.Bl -tag -width "complete.c" -compact
.It Pa chat.h
global state and declarations
.It Pa chat.c
startup and event loop
.It Pa irc.c
IRC connection and parsing
.It Pa ui.c
curses interface
.It Pa handle.c
IRC message handling
.It Pa command.c
input command handling
.It Pa edit.c
line editing
.It Pa complete.c
tab complete
.It Pa url.c
URL detection
.It Pa config.c
configuration parsing
.It Pa xdg.c
XDG base directories
.El
.
.Sh CONTRIBUTING
The upstream URL of this project is
.Aq Lk https://git.causal.agency/catgirl .
I'm happy to receive contributions in any form at
.Aq Mt june@causal.agency .
For sending patches by email, see
.Aq Lk https://git-send-email.io .
.
.Sh SEE ALSO
.Xr catgirl 1

497
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.Dd February 10, 2020
.Dt CATGIRL 1
.Os
.
.Sh NAME
.Nm catgirl
.Nd IRC client
.
.Sh SYNOPSIS
.Nm
.Op Fl ev
.Op Fl C Ar copy
.Op Fl H Ar hash
.Op Fl O Ar open
.Op Fl a Ar auth
.Op Fl c Ar cert
.Op Fl h Ar host
.Op Fl j Ar join
.Op Fl k Ar priv
.Op Fl n Ar nick
.Op Fl p Ar port
.Op Fl r Ar real
.Op Fl s Ar save
.Op Fl u Ar user
.Op Fl w Ar pass
.Op Ar config ...
.
.Sh DESCRIPTION
The
.Nm
program is a TLS-only
curses IRC client.
.
.Pp
Options can be loaded from files
listed on the command line.
Files are searched for in
.Pa $XDG_CONFIG_DIRS/catgirl
unless the path starts with
.Ql /
or
.Ql \&. .
Each option is placed on a line,
and lines beginning with
.Ql #
are ignored.
The options are listed below
following their corresponding flags.
.
.Pp
The arguments are as follows:
.Bl -tag -width Ds
.It Fl C Ar util , Cm copy = Ar util
Set the utility used by
.Ic /copy .
The default is the first available of
.Xr pbcopy 1 ,
.Xr wl-copy 1 ,
.Xr xclip 1 ,
.Xr xsel 1 .
.
.It Fl H Ar hash , Cm hash = Ar hash
Set the initial value of
the nick color hash function.
.
.It Fl O Ar util , Cm open = Ar util
Set the utility used by
.Ic /open .
The default is the first available of
.Xr open 1 ,
.Xr xdg-open 1 .
.
.It Fl a Ar user Ns : Ns Ar pass , Cm sasl-plain = Ar user Ns : Ns Ar pass
Authenticate as
.Ar user
with
.Ar pass
using SASL PLAIN.
Since this requires the account password
in plain text,
it is recommended to use SASL EXTERNAL instead with
.Fl e .
.
.It Fl c Ar path , Cm cert = Ar path
Load the TLS client certificate from
.Ar path .
If the private key is in a separate file,
it is loaded with
.Fl k .
With
.Fl e ,
authenticate using SASL EXTERNAL.
.
.It Fl e , Cm sasl-external
Authenticate using SASL EXTERNAL,
also known as CertFP.
The TLS client certificate is loaded with
.Fl c .
.
.It Fl h Ar host , Cm host = Ar host
Connect to
.Ar host .
.
.It Fl j Ar join , Cm join = Ar join
Join the comma-separated list of channels
.Ar join .
.
.It Fl k Ar path , Cm priv = Ar priv
Load the TLS client private key from
.Ar path .
.
.It Fl n Ar nick , Cm nick = Ar nick
Set nickname to
.Ar nick .
The default nickname is the user's name.
.
.It Fl p Ar port , Cm port = Ar port
Connect to
.Ar port .
The default port is 6697.
.
.It Fl r Ar real , Cm real = Ar real
Set realname to
.Ar real .
The default realname is the same as the nickname.
.
.It Fl s Ar name , Cm save = Ar name
Load and save the contents of windows from
.Ar name
in
.Pa $XDG_DATA_DIRS/catgirl ,
or an absolute or relative path if
.Ar name
starts with
.Ql /
or
.Ql \&. .
.
.It Fl u Ar user , Cm user = Ar user
Set username to
.Ar user .
The default username is the same as the nickname.
.
.It Fl v , Cm debug
Log raw IRC messages to the
.Sy <debug>
window
as well as standard error
if it is not a terminal.
.
.It Fl w Ar pass , Cm pass = Ar pass
Log in with the server password
.Ar pass .
.El
.
.Sh COMMANDS
Any unique prefix can be used to abbreviate a command.
For example,
.Ic /join
can be typed
.Ic /j .
.
.Ss Chat Commands
.Bl -tag -width Ds
.It Ic /join Ar channel
Join a channel.
.It Ic /me Op Ar action
Send an action message.
.It Ic /msg Ar nick message
Send a private message.
.It Ic /names
List users in the channel.
.It Ic /nick Ar nick
Change nicknames.
.It Ic /notice Ar message
Send a notice.
.It Ic /part Op Ar message
Leave the channel.
.It Ic /query Ar nick
Start a private conversation.
.It Ic /quit Op Ar message
Quit IRC.
.It Ic /quote Ar command
Send a raw IRC command.
.It Ic /topic Op Ar topic
Show or set the topic of the channel.
.It Ic /whois Ar nick
Query information about a user.
.El
.
.Ss UI Commands
.Bl -tag -width Ds
.It Ic /close Op Ar name | num
Close the named, numbered or current window.
.It Ic /copy Op Ar nick | substring
Copy the most recent URL from
.Ar nick
or matching
.Ar substring .
.It Ic /debug
Toggle logging in the
.Sy <debug>
window.
.It Ic /help Op Ar search
View this manual.
Type
.Ic q
to return to
.Nm .
.It Ic /open Op Ar count
Open each of
.Ar count
most recent URLs.
.It Ic /open Ar nick | substring
Open the most recent URL from
.Ar nick
or matching
.Ar substring .
.It Ic /window Ar name
Switch to window by name.
.It Ic /window Ar num , Ic / Ns Ar num
Switch to window by number.
.El
.
.Sh KEY BINDINGS
The
.Nm
interface provides
.Xr emacs 1 Ns -like
line editing
as well as keys for IRC formatting.
The prefixes
.Ic C-
and
.Ic M-
represent the control and meta (alt)
modifiers, respectively.
.
.Ss Line Editing
.Bl -tag -width Ds -compact
.It Ic C-a
Move to beginning of line.
.It Ic C-b
Move left.
.It Ic C-d
Delete next character.
.It Ic C-e
Move to end of line.
.It Ic C-f
Move right.
.It Ic C-k
Delete to end of line.
.It Ic C-u
Delete to beginning of line.
.It Ic C-w
Delete previous word.
.It Ic C-y
Paste previously deleted text.
.It Ic M-b
Move to previous word.
.It Ic M-d
Delete next word.
.It Ic M-f
Move to next word.
.It Ic Tab
Complete nick, channel or command.
.El
.
.Ss Window Keys
.Bl -tag -width Ds -compact
.It Ic C-l
Redraw the UI.
.It Ic C-n
Switch to next window.
.It Ic C-o
Switch to previously selected window.
.It Ic C-p
Switch to previous window.
.It Ic M-/
Switch to previously selected window.
.It Ic M-a
Cycle through unread windows.
.It Ic M-l
List the contents of the window
without word-wrapping.
Press
.Ic Enter
to return to
.Nm .
.It Ic M-m
Insert a blank line in the window.
.It Ic M- Ns Ar n
Switch to window by number 0\(en9.
.It Ic M-u
Scroll to first unread line.
.El
.
.Ss IRC Formatting
.Bl -tag -width Ds -compact
.It Ic C-z b
Toggle bold.
.It Ic C-z c
Set or reset color.
.It Ic C-z i
Toggle italics.
.It Ic C-z o
Reset formatting.
.It Ic C-z r
Toggle reverse color.
.It Ic C-z u
Toggle underline.
.El
.
.Pp
To set colors, follow
.Ic C-z c
by one or two digits for the foreground color,
optionally followed by a comma
and one or two digits for the background color.
To reset color, follow
.Ic C-z c
by a non-digit.
.
.Pp
The color numbers are as follows:
.Pp
.Bl -column "99" "orange (dark yellow)" "15" "pink (light magenta)"
.It \ 0 Ta white Ta \ 8 Ta yellow
.It \ 1 Ta black Ta \ 9 Ta light green
.It \ 2 Ta blue Ta 10 Ta cyan
.It \ 3 Ta green Ta 11 Ta light cyan
.It \ 4 Ta red Ta 12 Ta light blue
.It \ 5 Ta brown (dark red) Ta 13 Ta pink (light magenta)
.It \ 6 Ta magenta Ta 14 Ta gray
.It \ 7 Ta orange (dark yellow) Ta 15 Ta light gray
.It 99 Ta default
.El
.
.Sh FILES
.Bl -tag -width Ds
.It Pa $XDG_CONFIG_DIRS/catgirl
Configuration files are searched for first in
.Ev $XDG_CONFIG_HOME ,
usually
.Pa ~/.config ,
followed by the colon-separated list of paths
.Ev $XDG_CONFIG_DIRS ,
usually
.Pa /etc/xdg .
.It Pa ~/.config/catgirl
The most likely location of configuration files.
.
.It Pa $XDG_DATA_DIRS/catgirl
Save files are searched for first in
.Ev $XDG_DATA_HOME ,
usually
.Pa ~/.local/share ,
followed by the colon-separated list of paths
.Ev $XDG_DATA_DIRS ,
usually
.Pa /usr/local/share:/usr/share .
.It Pa ~/.local/share/catgirl
The most likely location of save files.
.El
.
.Sh EXAMPLES
Command line:
.Bd -literal -offset indent
catgirl -h chat.freenode.net -j '#ascii.town'
.Ed
.Pp
Configuration file:
.Bd -literal -offset indent
host = chat.freenode.net
join = #ascii.town
.Ed
.
.Sh STANDARDS
.Bl -item
.It
.Rs
.%A Kiyoshi Aman
.%T IRCv3.1 extended-join Extension
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/extensions/extended-join-3.1
.Re
.
.It
.Rs
.%A Waldo Bastian
.%A Ryan Lortie
.%A Lennart Poettering
.%T XDG Base Directory Specification
.%D November 24, 2010
.%U https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
.Re
.
.It
.Rs
.%A Kyle Fuller
.%A St\('ephan Kochen
.%A Alexey Sokolov
.%A James Wheare
.%T IRCv3.2 server-time Extension
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/extensions/server-time-3.2
.Re
.
.It
.Rs
.%A Lee Hardy
.%A Perry Lorier
.%A Kevin L. Mitchell
.%A William Pitcock
.%T IRCv3.1 Client Capability Negotiation
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/core/capability-negotiation-3.1.html
.Re
.
.It
.Rs
.%A S. Josefsson
.%T The Base16, Base32, and Base64 Data Encodings
.%I IETF
.%N RFC 4648
.%D October 2006
.%U https://tools.ietf.org/html/rfc4648
.Re
.
.It
.Rs
.%A C. Kalt
.%T Internet Relay Chat: Client Protocol
.%I IETF
.%N RFC 2812
.%D April 2000
.%U https://tools.ietf.org/html/rfc2812
.Re
.
.It
.Rs
.%A Mantas Mikul\[u0117]nas
.%T IRCv3.2 userhost-in-names Extension
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/extensions/userhost-in-names-3.2
.Re
.
.It
.Rs
.%A Daniel Oaks
.%T IRC Formatting
.%I ircdocs
.%U https://modern.ircdocs.horse/formatting.html
.Re
.
.It
.Rs
.%A William Pitcock
.%A Jilles Tjoelker
.%T IRCv3.1 SASL Authentication
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/extensions/sasl-3.1.html
.Re
.
.It
.Rs
.%A Alexey Sokolov
.%A St\('ephan Kochen
.%A Kyle Fuller
.%A Kiyoshi Aman
.%A James Wheare
.%T IRCv3 Message Tags
.%I IRCv3 Working Group
.%U https://ircv3.net/specs/extensions/message-tags
.Re
.
.It
.Rs
.%A K. Zeilenga, Ed.
.%T The PLAIN Simple Authentication and Security Layer (SASL) Mechanism
.%I IETF
.%N RFC 4616
.%D August 2006
.%U https://tools.ietf.org/html/rfc4616
.Re
.El
.
.Sh AUTHORS
.An June Bug Aq Mt june@causal.agency
.
.Sh BUGS
Send mail to
.Aq Mt june@causal.agency
or join
.Li #ascii.town
on
.Li chat.freenode.net .

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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <poll.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <sysexits.h>
#include <unistd.h>
#include "chat.h"
char *idNames[IDCap] = {
[None] = "<none>",
[Debug] = "<debug>",
[Network] = "<network>",
};
enum Color idColors[IDCap] = {
[None] = Black,
[Debug] = Green,
[Network] = Gray,
};
size_t idNext = Network + 1;
struct Self self = { .color = Default };
static const char *save;
static void exitSave(void) {
int error = uiSave(save);
if (error) {
warn("%s", save);
_exit(EX_IOERR);
}
}
uint32_t hashInit;
int procPipe[2] = { -1, -1 };
static void pipeRead(void) {
char buf[1024];
ssize_t len = read(procPipe[0], buf, sizeof(buf) - 1);
if (len < 0) err(EX_IOERR, "read");
if (!len) return;
buf[len - 1] = '\0';
char *ptr = buf;
while (ptr) {
char *line = strsep(&ptr, "\n");
uiFormat(Network, Warm, NULL, "%s", line);
}
}
static volatile sig_atomic_t signals[NSIG];
static void signalHandler(int signal) {
signals[signal] = 1;
}
int main(int argc, char *argv[]) {
setlocale(LC_CTYPE, "");
bool insecure = false;
const char *host = NULL;
const char *port = "6697";
const char *cert = NULL;
const char *priv = NULL;
bool sasl = false;
const char *pass = NULL;
const char *nick = NULL;
const char *user = NULL;
const char *real = NULL;
const char *Opts = "!C:H:O:a:c:eh:j:k:n:p:r:s:u:vw:";
const struct option LongOpts[] = {
{ "insecure", no_argument, NULL, '!' },
{ "copy", required_argument, NULL, 'C' },
{ "hash", required_argument, NULL, 'H' },
{ "open", required_argument, NULL, 'O' },
{ "sasl-plain", required_argument, NULL, 'a' },
{ "cert", required_argument, NULL, 'c' },
{ "sasl-external", no_argument, NULL, 'e' },
{ "host", required_argument, NULL, 'h' },
{ "join", required_argument, NULL, 'j' },
{ "priv", required_argument, NULL, 'k' },
{ "nick", required_argument, NULL, 'n' },
{ "port", required_argument, NULL, 'p' },
{ "real", required_argument, NULL, 'r' },
{ "save", required_argument, NULL, 's' },
{ "user", required_argument, NULL, 'u' },
{ "debug", no_argument, NULL, 'v' },
{ "pass", required_argument, NULL, 'w' },
{0},
};
int opt;
while (0 < (opt = getopt_config(argc, argv, Opts, LongOpts, NULL))) {
switch (opt) {
break; case '!': insecure = true;
break; case 'C': urlCopyUtil = optarg;
break; case 'H': hashInit = strtoul(optarg, NULL, 0);
break; case 'O': urlOpenUtil = optarg;
break; case 'a': sasl = true; self.plain = optarg;
break; case 'c': cert = optarg;
break; case 'e': sasl = true;
break; case 'h': host = optarg;
break; case 'j': self.join = optarg;
break; case 'k': priv = optarg;
break; case 'n': nick = optarg;
break; case 'p': port = optarg;
break; case 'r': real = optarg;
break; case 's': save = optarg;
break; case 'u': user = optarg;
break; case 'v': self.debug = true;
break; case 'w': pass = optarg;
break; default: return EX_USAGE;
}
}
if (!host) errx(EX_USAGE, "host required");
if (!nick) nick = getenv("USER");
if (!nick) errx(EX_CONFIG, "USER unset");
if (!user) user = nick;
if (!real) real = nick;
set(&self.network, host);
set(&self.chanTypes, "#&");
set(&self.prefixes, "@+");
commandComplete();
FILE *certFile = NULL;
FILE *privFile = NULL;
if (cert) {
certFile = configOpen(cert, "r");
if (!certFile) return EX_NOINPUT;
}
if (priv) {
privFile = configOpen(priv, "r");
if (!privFile) return EX_NOINPUT;
}
ircConfig(insecure, certFile, privFile);
if (certFile) fclose(certFile);
if (privFile) fclose(privFile);
uiInit();
if (save) {
uiLoad(save);
atexit(exitSave);
}
uiShowID(Network);
uiFormat(Network, Cold, NULL, "Traveling...");
uiDraw();
int irc = ircConnect(host, port);
if (pass) ircFormat("PASS :%s\r\n", pass);
if (sasl) ircFormat("CAP REQ :sasl\r\n");
ircFormat("CAP LS\r\n");
ircFormat("NICK :%s\r\n", nick);
ircFormat("USER %s 0 * :%s\r\n", user, real);
signal(SIGHUP, signalHandler);
signal(SIGINT, signalHandler);
signal(SIGTERM, signalHandler);
signal(SIGCHLD, signalHandler);
sig_t cursesWinch = signal(SIGWINCH, signalHandler);
int error = pipe(procPipe);
if (error) err(EX_OSERR, "pipe");
fcntl(irc, F_SETFD, FD_CLOEXEC);
fcntl(procPipe[0], F_SETFD, FD_CLOEXEC);
fcntl(procPipe[1], F_SETFD, FD_CLOEXEC);
struct pollfd fds[3] = {
{ .events = POLLIN, .fd = STDIN_FILENO },
{ .events = POLLIN, .fd = irc },
{ .events = POLLIN, .fd = procPipe[0] },
};
while (!self.quit) {
int nfds = poll(fds, ARRAY_LEN(fds), -1);
if (nfds < 0 && errno != EINTR) err(EX_IOERR, "poll");
if (nfds > 0) {
if (fds[0].revents) uiRead();
if (fds[1].revents) ircRecv();
if (fds[2].revents) pipeRead();
}
if (signals[SIGHUP]) self.quit = "zzz";
if (signals[SIGINT] || signals[SIGTERM]) break;
if (signals[SIGCHLD]) {
signals[SIGCHLD] = 0;
int status;
while (0 < waitpid(-1, &status, WNOHANG)) {
if (WIFEXITED(status) && WEXITSTATUS(status)) {
uiFormat(
Network, Warm, NULL,
"Process exits with status %d", WEXITSTATUS(status)
);
} else if (WIFSIGNALED(status)) {
uiFormat(
Network, Warm, NULL,
"Process terminates from %s",
strsignal(WTERMSIG(status))
);
}
}
uiShow();
}
if (signals[SIGWINCH]) {
signals[SIGWINCH] = 0;
cursesWinch(SIGWINCH);
// XXX: For some reason, calling uiDraw() here is the only way to
// get uiRead() to properly receive KEY_RESIZE.
uiDraw();
uiRead();
}
uiDraw();
}
if (self.quit) {
ircFormat("QUIT :%s\r\n", self.quit);
} else {
ircFormat("QUIT\r\n");
}
struct Message msg = {
.nick = self.nick,
.user = self.user,
.cmd = "QUIT",
.params[0] = self.quit,
};
handle(msg);
uiHide();
}

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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <sysexits.h>
#include <time.h>
#include <wchar.h>
#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit
#define XDG_SUBDIR "catgirl"
typedef unsigned char byte;
int procPipe[2];
enum Color {
White, Black, Blue, Green, Red, Brown, Magenta, Orange,
Yellow, LightGreen, Cyan, LightCyan, LightBlue, Pink, Gray, LightGray,
Default = 99,
};
enum { None, Debug, Network, IDCap = 256 };
extern char *idNames[IDCap];
extern enum Color idColors[IDCap];
extern size_t idNext;
static inline size_t idFind(const char *name) {
for (size_t id = 0; id < idNext; ++id) {
if (!strcmp(idNames[id], name)) return id;
}
return None;
}
static inline size_t idFor(const char *name) {
size_t id = idFind(name);
if (id) return id;
if (idNext == IDCap) return Network;
idNames[idNext] = strdup(name);
if (!idNames[idNext]) err(EX_OSERR, "strdup");
idColors[idNext] = Default;
return idNext++;
}
#define ENUM_CAP \
X("extended-join", CapExtendedJoin) \
X("sasl", CapSASL) \
X("server-time", CapServerTime) \
X("userhost-in-names", CapUserhostInNames)
enum Cap {
#define X(name, id) BIT(id),
ENUM_CAP
#undef X
};
extern struct Self {
bool debug;
char *plain;
const char *join;
enum Cap caps;
char *network;
char *chanTypes;
char *prefixes;
char *nick;
char *user;
enum Color color;
char *quit;
} self;
static inline void set(char **field, const char *value) {
free(*field);
*field = strdup(value);
if (!*field) err(EX_OSERR, "strdup");
}
#define ENUM_TAG \
X("time", TagTime)
enum Tag {
#define X(name, id) id,
ENUM_TAG
#undef X
TagCap,
};
enum { ParamCap = 15 };
struct Message {
char *tags[TagCap];
char *nick;
char *user;
char *host;
char *cmd;
char *params[ParamCap];
};
void ircConfig(bool insecure, FILE *cert, FILE *priv);
int ircConnect(const char *host, const char *port);
void ircRecv(void);
void ircSend(const char *ptr, size_t len);
void ircFormat(const char *format, ...)
__attribute__((format(printf, 1, 2)));
extern struct Replies {
size_t join;
size_t topic;
size_t names;
size_t whois;
} replies;
void handle(struct Message msg);
void command(size_t id, char *input);
const char *commandIsPrivmsg(size_t id, const char *input);
const char *commandIsNotice(size_t id, const char *input);
const char *commandIsAction(size_t id, const char *input);
void commandComplete(void);
enum Heat { Cold, Warm, Hot };
void uiInit(void);
void uiShow(void);
void uiHide(void);
void uiDraw(void);
void uiShowID(size_t id);
void uiShowNum(size_t num);
void uiCloseID(size_t id);
void uiCloseNum(size_t id);
void uiRead(void);
void uiWrite(size_t id, enum Heat heat, const time_t *time, const char *str);
void uiFormat(
size_t id, enum Heat heat, const time_t *time, const char *format, ...
) __attribute__((format(printf, 4, 5)));
void uiLoad(const char *name);
int uiSave(const char *name);
enum Edit {
EditHead,
EditTail,
EditPrev,
EditNext,
EditPrevWord,
EditNextWord,
EditDeleteHead,
EditDeleteTail,
EditDeletePrev,
EditDeleteNext,
EditDeletePrevWord,
EditDeleteNextWord,
EditPaste,
EditInsert,
EditComplete,
EditEnter,
};
void edit(size_t id, enum Edit op, wchar_t ch);
char *editBuffer(size_t *pos);
const char *complete(size_t id, const char *prefix);
void completeAccept(void);
void completeReject(void);
void completeAdd(size_t id, const char *str, enum Color color);
void completeTouch(size_t id, const char *str, enum Color color);
void completeReplace(size_t id, const char *old, const char *new);
void completeRemove(size_t id, const char *str);
void completeClear(size_t id);
size_t completeID(const char *str);
enum Color completeColor(size_t id, const char *str);
extern const char *urlOpenUtil;
extern const char *urlCopyUtil;
void urlScan(size_t id, const char *nick, const char *mesg);
void urlOpenCount(size_t id, size_t count);
void urlOpenMatch(size_t id, const char *str);
void urlCopyMatch(size_t id, const char *str);
FILE *configOpen(const char *path, const char *mode);
FILE *dataOpen(const char *path, const char *mode);
int getopt_config(
int argc, char *const *argv,
const char *optstring, const struct option *longopts, int *longindex
);
extern uint32_t hashInit;
static inline enum Color hash(const char *str) {
if (*str == '~') str++;
uint32_t hash = hashInit;
for (; *str; ++str) {
hash = (hash << 5) | (hash >> 27);
hash ^= *str;
hash *= 0x27220A95;
}
return 2 + hash % 74;
}
#define BASE64_SIZE(len) (1 + ((len) + 2) / 3 * 4)
static const char Base64[64] = {
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
};
static inline void base64(char *dst, const byte *src, size_t len) {
size_t i = 0;
while (len > 2) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2 | src[2] >> 6)];
dst[i++] = Base64[0x3F & src[2]];
src += 3;
len -= 3;
}
if (len) {
dst[i++] = Base64[0x3F & (src[0] >> 2)];
if (len > 1) {
dst[i++] = Base64[0x3F & (src[0] << 4 | src[1] >> 4)];
dst[i++] = Base64[0x3F & (src[1] << 2)];
} else {
dst[i++] = Base64[0x3F & (src[0] << 4)];
dst[i++] = '=';
}
dst[i++] = '=';
}
dst[i] = '\0';
}
// Defined in libcrypto if missing from libc:
void explicit_bzero(void *b, size_t len);

280
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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "chat.h"
typedef void Command(size_t id, char *params);
static void commandDebug(size_t id, char *params) {
(void)id;
(void)params;
self.debug ^= true;
uiFormat(
Debug, Warm, NULL,
"\3%dDebug is %s", Gray, (self.debug ? "on" : "off")
);
}
static void commandQuote(size_t id, char *params) {
(void)id;
if (params) ircFormat("%s\r\n", params);
}
static void commandPrivmsg(size_t id, char *params) {
if (!params || !params[0]) return;
ircFormat("PRIVMSG %s :%s\r\n", idNames[id], params);
struct Message msg = {
.nick = self.nick,
.user = self.user,
.cmd = "PRIVMSG",
.params[0] = idNames[id],
.params[1] = params,
};
handle(msg);
}
static void commandNotice(size_t id, char *params) {
if (!params || !params[0]) return;
ircFormat("NOTICE %s :%s\r\n", idNames[id], params);
struct Message msg = {
.nick = self.nick,
.user = self.user,
.cmd = "NOTICE",
.params[0] = idNames[id],
.params[1] = params,
};
handle(msg);
}
static void commandMe(size_t id, char *params) {
char buf[512];
snprintf(buf, sizeof(buf), "\1ACTION %s\1", (params ? params : ""));
commandPrivmsg(id, buf);
}
static void commandMsg(size_t id, char *params) {
(void)id;
char *nick = strsep(&params, " ");
if (!params) return;
commandPrivmsg(idFor(nick), params);
}
static void commandJoin(size_t id, char *params) {
size_t count = 1;
if (params) {
for (char *ch = params; *ch && *ch != ' '; ++ch) {
if (*ch == ',') count++;
}
}
ircFormat("JOIN %s\r\n", (params ? params : idNames[id]));
replies.join += count;
replies.topic += count;
replies.names += count;
}
static void commandPart(size_t id, char *params) {
if (params) {
ircFormat("PART %s :%s\r\n", idNames[id], params);
} else {
ircFormat("PART %s\r\n", idNames[id]);
}
}
static void commandQuit(size_t id, char *params) {
(void)id;
set(&self.quit, (params ? params : "Goodbye"));
}
static void commandNick(size_t id, char *params) {
(void)id;
if (!params) return;
ircFormat("NICK :%s\r\n", params);
}
static void commandTopic(size_t id, char *params) {
if (params) {
ircFormat("TOPIC %s :%s\r\n", idNames[id], params);
} else {
ircFormat("TOPIC %s\r\n", idNames[id]);
replies.topic++;
}
}
static void commandNames(size_t id, char *params) {
(void)params;
ircFormat("NAMES :%s\r\n", idNames[id]);
replies.names++;
}
static void commandWhois(size_t id, char *params) {
(void)id;
if (!params) return;
ircFormat("WHOIS :%s\r\n", params);
replies.whois++;
}
static void commandQuery(size_t id, char *params) {
if (!params) return;
size_t query = idFor(params);
idColors[query] = completeColor(id, params);
uiShowID(query);
}
static void commandWindow(size_t id, char *params) {
if (!params) return;
if (isdigit(params[0])) {
uiShowNum(strtoul(params, NULL, 10));
} else {
id = idFind(params);
if (id) uiShowID(id);
}
}
static void commandClose(size_t id, char *params) {
if (!params) {
uiCloseID(id);
} else if (isdigit(params[0])) {
uiCloseNum(strtoul(params, NULL, 10));
} else {
id = idFind(params);
if (id) uiCloseID(id);
}
}
static void commandOpen(size_t id, char *params) {
if (!params) {
urlOpenCount(id, 1);
} else if (isdigit(params[0])) {
urlOpenCount(id, strtoul(params, NULL, 10));
} else {
urlOpenMatch(id, params);
}
}
static void commandCopy(size_t id, char *params) {
urlCopyMatch(id, params);
}
static void commandHelp(size_t id, char *params) {
(void)id;
uiHide();
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
char buf[256];
snprintf(buf, sizeof(buf), "ip%s$", (params ? params : "COMMANDS"));
setenv("LESS", buf, 1);
execlp("man", "man", "1", "catgirl", NULL);
dup2(procPipe[1], STDERR_FILENO);
warn("man");
_exit(EX_UNAVAILABLE);
}
static const struct Handler {
const char *cmd;
Command *fn;
} Commands[] = {
{ "/close", commandClose },
{ "/copy", commandCopy },
{ "/debug", commandDebug },
{ "/help", commandHelp },
{ "/join", commandJoin },
{ "/me", commandMe },
{ "/msg", commandMsg },
{ "/names", commandNames },
{ "/nick", commandNick },
{ "/notice", commandNotice },
{ "/open", commandOpen },
{ "/part", commandPart },
{ "/query", commandQuery },
{ "/quit", commandQuit },
{ "/quote", commandQuote },
{ "/topic", commandTopic },
{ "/whois", commandWhois },
{ "/window", commandWindow },
};
static int compar(const void *cmd, const void *_handler) {
const struct Handler *handler = _handler;
return strcmp(cmd, handler->cmd);
}
const char *commandIsPrivmsg(size_t id, const char *input) {
if (id == Network || id == Debug) return NULL;
if (input[0] != '/') return input;
const char *space = strchr(&input[1], ' ');
const char *slash = strchr(&input[1], '/');
if (slash && (!space || slash < space)) return input;
return NULL;
}
const char *commandIsNotice(size_t id, const char *input) {
if (id == Network || id == Debug) return NULL;
if (strncmp(input, "/notice ", 8)) return NULL;
return &input[8];
}
const char *commandIsAction(size_t id, const char *input) {
if (id == Network || id == Debug) return NULL;
if (strncmp(input, "/me ", 4)) return NULL;
return &input[4];
}
void command(size_t id, char *input) {
if (id == Debug && input[0] != '/') {
commandQuote(id, input);
} else if (commandIsPrivmsg(id, input)) {
commandPrivmsg(id, input);
} else if (input[0] == '/' && isdigit(input[1])) {
commandWindow(id, &input[1]);
} else {
const char *cmd = strsep(&input, " ");
const char *unique = complete(None, cmd);
if (unique && !complete(None, cmd)) {
cmd = unique;
completeReject();
}
const struct Handler *handler = bsearch(
cmd, Commands, ARRAY_LEN(Commands), sizeof(*handler), compar
);
if (handler) {
if (input) {
input += strspn(input, " ");
size_t len = strlen(input);
while (input[len - 1] == ' ') input[--len] = '\0';
if (!input[0]) input = NULL;
}
if (input && !input[0]) input = NULL;
handler->fn(id, input);
} else {
uiFormat(id, Hot, NULL, "No such command %s", cmd);
}
}
}
void commandComplete(void) {
for (size_t i = 0; i < ARRAY_LEN(Commands); ++i) {
completeAdd(None, Commands[i].cmd, Default);
}
}

162
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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include "chat.h"
struct Node {
size_t id;
char *str;
enum Color color;
struct Node *prev;
struct Node *next;
};
static struct Node *alloc(size_t id, const char *str, enum Color color) {
struct Node *node = malloc(sizeof(*node));
if (!node) err(EX_OSERR, "malloc");
node->id = id;
node->str = strdup(str);
if (!node->str) err(EX_OSERR, "strdup");
node->color = color;
node->prev = NULL;
node->next = NULL;
return node;
}
static struct Node *head;
static struct Node *tail;
static struct Node *detach(struct Node *node) {
if (node->prev) node->prev->next = node->next;
if (node->next) node->next->prev = node->prev;
if (head == node) head = node->next;
if (tail == node) tail = node->prev;
node->prev = NULL;
node->next = NULL;
return node;
}
static struct Node *prepend(struct Node *node) {
node->prev = NULL;
node->next = head;
if (head) head->prev = node;
head = node;
if (!tail) tail = node;
return node;
}
static struct Node *append(struct Node *node) {
node->next = NULL;
node->prev = tail;
if (tail) tail->next = node;
tail = node;
if (!head) head = node;
return node;
}
static struct Node *find(size_t id, const char *str) {
for (struct Node *node = head; node; node = node->next) {
if (node->id == id && !strcmp(node->str, str)) return node;
}
return NULL;
}
void completeAdd(size_t id, const char *str, enum Color color) {
if (!find(id, str)) append(alloc(id, str, color));
}
void completeTouch(size_t id, const char *str, enum Color color) {
struct Node *node = find(id, str);
if (node && node->color != color) node->color = color;
prepend(node ? detach(node) : alloc(id, str, color));
}
enum Color completeColor(size_t id, const char *str) {
struct Node *node = find(id, str);
return (node ? node->color : Default);
}
static struct Node *match;
const char *complete(size_t id, const char *prefix) {
for (match = (match ? match->next : head); match; match = match->next) {
if (match->id && match->id != id) continue;
if (strncasecmp(match->str, prefix, strlen(prefix))) continue;
return match->str;
}
return NULL;
}
void completeAccept(void) {
if (match) prepend(detach(match));
match = NULL;
}
void completeReject(void) {
match = NULL;
}
size_t completeID(const char *str) {
for (match = (match ? match->next : head); match; match = match->next) {
if (match->id && !strcmp(match->str, str)) return match->id;
}
return None;
}
void completeReplace(size_t id, const char *old, const char *new) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = node->next) {
next = node->next;
if (id && node->id != id) continue;
if (strcmp(node->str, old)) continue;
if (match == node) match = NULL;
free(node->str);
node->str = strdup(new);
if (!node->str) err(EX_OSERR, "strdup");
prepend(detach(node));
}
}
void completeRemove(size_t id, const char *str) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = next) {
next = node->next;
if (id && node->id != id) continue;
if (strcmp(node->str, str)) continue;
if (match == node) match = NULL;
detach(node);
free(node->str);
free(node);
}
}
void completeClear(size_t id) {
struct Node *next = NULL;
for (struct Node *node = head; node; node = next) {
next = node->next;
if (node->id != id) continue;
if (match == node) match = NULL;
detach(node);
free(node->str);
free(node);
}
}

137
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/* Copyright (C) 2019 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "chat.h"
#define WS "\t "
static const char *path;
static FILE *file;
static size_t num;
static char *line;
static size_t cap;
static int clean(int opt) {
if (file) fclose(file);
free(line);
line = NULL;
cap = 0;
return opt;
}
int getopt_config(
int argc, char *const *argv,
const char *optstring, const struct option *longopts, int *longindex
) {
static int opt;
if (opt >= 0) {
opt = getopt_long(argc, argv, optstring, longopts, longindex);
}
if (opt >= 0) return opt;
for (;;) {
if (!file) {
if (optind < argc) {
num = 0;
path = argv[optind++];
file = configOpen(path, "r");
if (!file) return clean('?');
} else {
return clean(-1);
}
}
for (;;) {
ssize_t llen = getline(&line, &cap, file);
if (ferror(file)) {
warn("%s", path);
return clean('?');
}
if (llen <= 0) break;
if (line[llen - 1] == '\n') line[llen - 1] = '\0';
num++;
char *name = line + strspn(line, WS);
size_t len = strcspn(name, WS "=");
if (!name[0] || name[0] == '#') continue;
const struct option *option;
for (option = longopts; option->name; ++option) {
if (strlen(option->name) != len) continue;
if (!strncmp(option->name, name, len)) break;
}
if (!option->name) {
warnx(
"%s:%zu: unrecognized option `%.*s'",
path, num, (int)len, name
);
return clean('?');
}
char *equal = &name[len] + strspn(&name[len], WS);
if (*equal && *equal != '=') {
warnx(
"%s:%zu: option `%s' missing equals sign",
path, num, option->name
);
return clean('?');
}
if (option->has_arg == no_argument && *equal) {
warnx(
"%s:%zu: option `%s' doesn't allow an argument",
path, num, option->name
);
return clean('?');
}
if (option->has_arg == required_argument && !*equal) {
warnx(
"%s:%zu: option `%s' requires an argument",
path, num, option->name
);
return clean(':');
}
optarg = NULL;
if (*equal) {
char *arg = &equal[1] + strspn(&equal[1], WS);
optarg = strdup(arg);
if (!optarg) {
warn("getopt_config");
return clean('?');
}
}
if (longindex) *longindex = option - longopts;
if (option->flag) {
*option->flag = option->val;
return 0;
} else {
return option->val;
}
}
fclose(file);
file = NULL;
}
}

11
configure vendored 100755
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@ -0,0 +1,11 @@
#!/bin/sh
set -eu
libs='libcrypto libtls ncursesw'
pkg-config --print-errors $libs
cat >config.mk <<EOF
CFLAGS += $(pkg-config --cflags $libs)
LDFLAGS += $(pkg-config --libs-only-L $libs)
LDLIBS = $(pkg-config --libs-only-l $libs)
EOF

207
edit.c 100644
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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
#include <wctype.h>
#include "chat.h"
enum { Cap = 512 };
static wchar_t buf[Cap];
static size_t len;
static size_t pos;
char *editBuffer(size_t *mbsPos) {
static char mbs[MB_LEN_MAX * Cap];
const wchar_t *ptr = buf;
size_t mbsLen = wcsnrtombs(mbs, &ptr, pos, sizeof(mbs) - 1, NULL);
assert(mbsLen != (size_t)-1);
if (mbsPos) *mbsPos = mbsLen;
ptr = &buf[pos];
size_t n = wcsnrtombs(
&mbs[mbsLen], &ptr, len - pos, sizeof(mbs) - mbsLen - 1, NULL
);
assert(n != (size_t)-1);
mbsLen += n;
mbs[mbsLen] = '\0';
return mbs;
}
static struct {
wchar_t buf[Cap];
size_t len;
} cut;
static bool reserve(size_t index, size_t count) {
if (len + count > Cap) return false;
memmove(&buf[index + count], &buf[index], sizeof(*buf) * (len - index));
len += count;
return true;
}
static void delete(size_t index, size_t count) {
if (index + count > len) return;
if (count > 1) {
memcpy(cut.buf, &buf[index], sizeof(*buf) * count);
cut.len = count;
}
memmove(
&buf[index], &buf[index + count], sizeof(*buf) * (len - index - count)
);
len -= count;
}
static struct {
size_t pos;
size_t pre;
size_t len;
} tab;
static void tabComplete(size_t id) {
if (!tab.len) {
tab.pos = pos;
while (tab.pos && buf[tab.pos - 1] != L' ') tab.pos--;
if (tab.pos == pos) return;
tab.pre = pos - tab.pos;
tab.len = tab.pre;
}
char mbs[MB_LEN_MAX * Cap];
const wchar_t *ptr = &buf[tab.pos];
size_t n = wcsnrtombs(mbs, &ptr, tab.pre, sizeof(mbs) - 1, NULL);
assert(n != (size_t)-1);
mbs[n] = '\0';
const char *comp = complete(id, mbs);
if (!comp) comp = complete(id, mbs);
if (!comp) {
tab.len = 0;
return;
}
wchar_t wcs[Cap];
n = mbstowcs(wcs, comp, sizeof(wcs));
assert(n != (size_t)-1);
if (tab.pos + n + 2 > Cap) {
completeReject();
tab.len = 0;
return;
}
delete(tab.pos, tab.len);
if (wcs[0] != L'/' && !tab.pos) {
tab.len = n + 2;
reserve(tab.pos, tab.len);
buf[tab.pos + n + 0] = L':';
buf[tab.pos + n + 1] = L' ';
} else if (
tab.pos >= 2 && (buf[tab.pos - 2] == L':' || buf[tab.pos - 2] == L',')
) {
tab.len = n + 2;
reserve(tab.pos, tab.len);
buf[tab.pos - 2] = L',';
buf[tab.pos + n + 0] = L':';
buf[tab.pos + n + 1] = L' ';
} else {
tab.len = n + 1;
reserve(tab.pos, tab.len);
buf[tab.pos + n] = L' ';
}
memcpy(&buf[tab.pos], wcs, sizeof(*wcs) * n);
pos = tab.pos + tab.len;
}
static void tabAccept(void) {
completeAccept();
tab.len = 0;
}
static void tabReject(void) {
completeReject();
tab.len = 0;
}
void edit(size_t id, enum Edit op, wchar_t ch) {
size_t init = pos;
switch (op) {
break; case EditHead: pos = 0;
break; case EditTail: pos = len;
break; case EditPrev: if (pos) pos--;
break; case EditNext: if (pos < len) pos++;
break; case EditPrevWord: {
if (pos) pos--;
while (pos && !iswspace(buf[pos - 1])) pos--;
}
break; case EditNextWord: {
if (pos < len) pos++;
while (pos < len && !iswspace(buf[pos])) pos++;
}
break; case EditDeleteHead: delete(0, pos); pos = 0;
break; case EditDeleteTail: delete(pos, len - pos);
break; case EditDeletePrev: if (pos) delete(--pos, 1);
break; case EditDeleteNext: delete(pos, 1);
break; case EditDeletePrevWord: {
if (!pos) break;
size_t word = pos - 1;
while (word && !iswspace(buf[word - 1])) word--;
delete(word, pos - word);
pos = word;
}
break; case EditDeleteNextWord: {
if (pos == len) break;
size_t word = pos + 1;
while (word < len && !iswspace(buf[word])) word++;
delete(pos, word - pos);
}
break; case EditPaste: {
if (reserve(pos, cut.len)) {
memcpy(&buf[pos], cut.buf, sizeof(*buf) * cut.len);
pos += cut.len;
}
}
break; case EditInsert: {
if (reserve(pos, 1)) {
buf[pos++] = ch;
}
}
break; case EditComplete: {
tabComplete(id);
return;
}
break; case EditEnter: {
tabAccept();
command(id, editBuffer(NULL));
len = pos = 0;
return;
}
}
if (pos < init) {
tabReject();
} else {
tabAccept();
}
}

637
handle.c 100644
View File

@ -0,0 +1,637 @@
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include "chat.h"
struct Replies replies;
static const char *CapNames[] = {
#define X(name, id) [id##Bit] = name,
ENUM_CAP
#undef X
};
static enum Cap capParse(const char *list) {
enum Cap caps = 0;
while (*list) {
enum Cap cap = 0;
size_t len = strcspn(list, " ");
for (size_t i = 0; i < ARRAY_LEN(CapNames); ++i) {
if (len != strlen(CapNames[i])) continue;
if (strncmp(list, CapNames[i], len)) continue;
cap = 1 << i;
break;
}
caps |= cap;
list += len;
if (*list) list++;
}
return caps;
}
static const char *capList(enum Cap caps) {
static char buf[1024];
buf[0] = '\0';
for (size_t i = 0; i < ARRAY_LEN(CapNames); ++i) {
if (caps & (1 << i)) {
if (buf[0]) strlcat(buf, " ", sizeof(buf));
strlcat(buf, CapNames[i], sizeof(buf));
}
}
return buf;
}
static void require(struct Message *msg, bool origin, size_t len) {
if (origin) {
if (!msg->nick) errx(EX_PROTOCOL, "%s missing origin", msg->cmd);
if (!msg->user) msg->user = msg->nick;
if (!msg->host) msg->host = msg->user;
}
for (size_t i = 0; i < len; ++i) {
if (msg->params[i]) continue;
errx(EX_PROTOCOL, "%s missing parameter %zu", msg->cmd, 1 + i);
}
}
static const time_t *tagTime(const struct Message *msg) {
static time_t time;
struct tm tm;
if (!msg->tags[TagTime]) return NULL;
if (!strptime(msg->tags[TagTime], "%FT%T", &tm)) return NULL;
time = timegm(&tm);
return &time;
}
typedef void Handler(struct Message *msg);
static void handleErrorNicknameInUse(struct Message *msg) {
if (self.nick) return;
require(msg, false, 2);
ircFormat("NICK :%s_\r\n", msg->params[1]);
}
static void handleErrorErroneousNickname(struct Message *msg) {
require(msg, false, 3);
errx(EX_CONFIG, "%s: %s", msg->params[1], msg->params[2]);
}
static void handleCap(struct Message *msg) {
require(msg, false, 3);
enum Cap caps = capParse(msg->params[2]);
if (!strcmp(msg->params[1], "LS")) {
caps &= ~CapSASL;
if (caps) {
ircFormat("CAP REQ :%s\r\n", capList(caps));
} else {
if (!(self.caps & CapSASL)) ircFormat("CAP END\r\n");
}
} else if (!strcmp(msg->params[1], "ACK")) {
self.caps |= caps;
if (caps & CapSASL) {
ircFormat("AUTHENTICATE %s\r\n", (self.plain ? "PLAIN" : "EXTERNAL"));
}
if (!(self.caps & CapSASL)) ircFormat("CAP END\r\n");
} else if (!strcmp(msg->params[1], "NAK")) {
errx(EX_CONFIG, "server does not support %s", msg->params[2]);
}
}
static void handleAuthenticate(struct Message *msg) {
(void)msg;
if (!self.plain) {
ircFormat("AUTHENTICATE +\r\n");
return;
}
byte buf[299];
size_t len = 1 + strlen(self.plain);
if (sizeof(buf) < len) errx(EX_CONFIG, "SASL PLAIN is too long");
buf[0] = 0;
for (size_t i = 0; self.plain[i]; ++i) {
buf[1 + i] = (self.plain[i] == ':' ? 0 : self.plain[i]);
}
char b64[BASE64_SIZE(sizeof(buf))];
base64(b64, buf, len);
ircFormat("AUTHENTICATE ");
ircSend(b64, BASE64_SIZE(len));
ircFormat("\r\n");
explicit_bzero(b64, sizeof(b64));
explicit_bzero(buf, sizeof(buf));
explicit_bzero(self.plain, strlen(self.plain));
}
static void handleReplyLoggedIn(struct Message *msg) {
(void)msg;
ircFormat("CAP END\r\n");
}
static void handleErrorSASLFail(struct Message *msg) {
require(msg, false, 2);
errx(EX_CONFIG, "%s", msg->params[1]);
}
static void handleReplyWelcome(struct Message *msg) {
require(msg, false, 1);
set(&self.nick, msg->params[0]);
completeTouch(Network, self.nick, Default);
if (self.join) {
size_t count = 1;
for (const char *ch = self.join; *ch && *ch != ' '; ++ch) {
if (*ch == ',') count++;
}
ircFormat("JOIN %s\r\n", self.join);
replies.join += count;
replies.topic += count;
replies.names += count;
}
}
static void handleReplyISupport(struct Message *msg) {
for (size_t i = 1; i < ParamCap; ++i) {
if (!msg->params[i]) break;
char *key = strsep(&msg->params[i], "=");
if (!msg->params[i]) continue;
if (!strcmp(key, "NETWORK")) {
set(&self.network, msg->params[i]);
uiFormat(
Network, Cold, tagTime(msg),
"You arrive in %s", msg->params[i]
);
} else if (!strcmp(key, "CHANTYPES")) {
set(&self.chanTypes, msg->params[i]);
} else if (!strcmp(key, "PREFIX")) {
strsep(&msg->params[i], ")");
if (!msg->params[i]) continue;
set(&self.prefixes, msg->params[i]);
}
}
}
static void handleReplyMOTD(struct Message *msg) {
require(msg, false, 2);
char *line = msg->params[1];
urlScan(Network, msg->nick, line);
if (!strncmp(line, "- ", 2)) {
uiFormat(Network, Cold, tagTime(msg), "\3%d-\3\t%s", Gray, &line[2]);
} else {
uiFormat(Network, Cold, tagTime(msg), "%s", line);
}
}
static void handleJoin(struct Message *msg) {
require(msg, true, 1);
size_t id = idFor(msg->params[0]);
if (self.nick && !strcmp(msg->nick, self.nick)) {
if (!self.user) {
set(&self.user, msg->user);
self.color = hash(msg->user);
}
idColors[id] = hash(msg->params[0]);
completeTouch(None, msg->params[0], idColors[id]);
if (replies.join) {
uiShowID(id);
replies.join--;
}
}
completeTouch(id, msg->nick, hash(msg->user));
if (msg->params[2] && !strcasecmp(msg->params[2], msg->nick)) {
msg->params[2] = NULL;
}
uiFormat(
id, Cold, tagTime(msg),
"\3%02d%s\3\t%s%s%sarrives in \3%02d%s\3",
hash(msg->user), msg->nick,
(msg->params[2] ? "(" : ""),
(msg->params[2] ? msg->params[2] : ""),
(msg->params[2] ? ") " : ""),
hash(msg->params[0]), msg->params[0]
);
}
static void handlePart(struct Message *msg) {
require(msg, true, 1);
size_t id = idFor(msg->params[0]);
if (self.nick && !strcmp(msg->nick, self.nick)) {
completeClear(id);
}
completeRemove(id, msg->nick);
urlScan(id, msg->nick, msg->params[1]);
uiFormat(
id, Cold, tagTime(msg),
"\3%02d%s\3\tleaves \3%02d%s\3%s%s",
hash(msg->user), msg->nick, hash(msg->params[0]), msg->params[0],
(msg->params[1] ? ": " : ""),
(msg->params[1] ? msg->params[1] : "")
);
}
static void handleKick(struct Message *msg) {
require(msg, true, 2);
size_t id = idFor(msg->params[0]);
bool kicked = self.nick && !strcmp(msg->params[1], self.nick);
completeTouch(id, msg->nick, hash(msg->user));
urlScan(id, msg->nick, msg->params[2]);
uiFormat(
id, (kicked ? Hot : Cold), tagTime(msg),
"%s\3%02d%s\17\tkicks \3%02d%s\3 out of \3%02d%s\3%s%s",
(kicked ? "\26" : ""),
hash(msg->user), msg->nick,
completeColor(id, msg->params[1]), msg->params[1],
hash(msg->params[0]), msg->params[0],
(msg->params[2] ? ": " : ""),
(msg->params[2] ? msg->params[2] : "")
);
completeRemove(id, msg->params[1]);
if (kicked) completeClear(id);
}
static void handleNick(struct Message *msg) {
require(msg, true, 1);
if (self.nick && !strcmp(msg->nick, self.nick)) {
set(&self.nick, msg->params[0]);
uiRead(); // Update prompt.
}
size_t id;
while (None != (id = completeID(msg->nick))) {
uiFormat(
id, Cold, tagTime(msg),
"\3%02d%s\3\tis now known as \3%02d%s\3",
hash(msg->user), msg->nick, hash(msg->user), msg->params[0]
);
}
completeReplace(None, msg->nick, msg->params[0]);
}
static void handleQuit(struct Message *msg) {
require(msg, true, 0);
size_t id;
while (None != (id = completeID(msg->nick))) {
urlScan(id, msg->nick, msg->params[0]);
uiFormat(
id, Cold, tagTime(msg),
"\3%02d%s\3\tleaves%s%s",
hash(msg->user), msg->nick,
(msg->params[0] ? ": " : ""),
(msg->params[0] ? msg->params[0] : "")
);
}
completeRemove(None, msg->nick);
}
static void handleReplyNames(struct Message *msg) {
require(msg, false, 4);
size_t id = idFor(msg->params[2]);
char buf[1024];
size_t len = 0;
while (msg->params[3]) {
char *name = strsep(&msg->params[3], " ");
name += strspn(name, self.prefixes);
char *nick = strsep(&name, "!");
char *user = strsep(&name, "@");
enum Color color = (user ? hash(user) : Default);
completeAdd(id, nick, color);
if (!replies.names) continue;
int n = snprintf(
&buf[len], sizeof(buf) - len,
"%s\3%02d%s\3", (len ? ", " : ""), color, nick
);
assert(n > 0 && len + n < sizeof(buf));
len += n;
}
if (!replies.names) return;
uiFormat(
id, Cold, tagTime(msg),
"In \3%02d%s\3 are %s",
hash(msg->params[2]), msg->params[2], buf
);
}
static void handleReplyEndOfNames(struct Message *msg) {
(void)msg;
if (replies.names) replies.names--;
}
static void handleReplyNoTopic(struct Message *msg) {
require(msg, false, 2);
if (!replies.topic) return;
replies.topic--;
uiFormat(
idFor(msg->params[1]), Cold, tagTime(msg),
"There is no sign in \3%02d%s\3",
hash(msg->params[1]), msg->params[1]
);
}
static void handleReplyTopic(struct Message *msg) {
require(msg, false, 3);
if (!replies.topic) return;
replies.topic--;
size_t id = idFor(msg->params[1]);
urlScan(id, NULL, msg->params[2]);
uiFormat(
id, Cold, tagTime(msg),
"The sign in \3%02d%s\3 reads: %s",
hash(msg->params[1]), msg->params[1], msg->params[2]
);
}
static void handleTopic(struct Message *msg) {
require(msg, true, 2);
size_t id = idFor(msg->params[0]);
if (msg->params[1][0]) {
urlScan(id, msg->nick, msg->params[1]);
uiFormat(
id, Warm, tagTime(msg),
"\3%02d%s\3\tplaces a new sign in \3%02d%s\3: %s",
hash(msg->user), msg->nick, hash(msg->params[0]), msg->params[0],
msg->params[1]
);
} else {
uiFormat(
id, Warm, tagTime(msg),
"\3%02d%s\3\tremoves the sign in \3%02d%s\3",
hash(msg->user), msg->nick, hash(msg->params[0]), msg->params[0]
);
}
}
static void handleReplyWhoisUser(struct Message *msg) {
require(msg, false, 6);
if (!replies.whois) return;
completeTouch(Network, msg->params[1], hash(msg->params[2]));
uiFormat(
Network, Warm, tagTime(msg),
"\3%02d%s\3\tis %s!%s@%s (%s)",
hash(msg->params[2]), msg->params[1],
msg->params[1], msg->params[2], msg->params[3], msg->params[5]
);
}
static void handleReplyWhoisServer(struct Message *msg) {
require(msg, false, 4);
if (!replies.whois) return;
uiFormat(
Network, Warm, tagTime(msg),
"\3%02d%s\3\tis connected to %s (%s)",
completeColor(Network, msg->params[1]), msg->params[1],
msg->params[2], msg->params[3]
);
}
static void handleReplyWhoisIdle(struct Message *msg) {
require(msg, false, 3);
if (!replies.whois) return;
unsigned long idle = strtoul(msg->params[2], NULL, 10);
const char *unit = "second";
if (idle / 60) { idle /= 60; unit = "minute"; }
if (idle / 60) { idle /= 60; unit = "hour"; }
if (idle / 24) { idle /= 24; unit = "day"; }
time_t signon = (msg->params[3] ? strtoul(msg->params[3], NULL, 10) : 0);
uiFormat(
Network, Warm, tagTime(msg),
"\3%02d%s\3\tis idle for %lu %s%s%s%.*s",
completeColor(Network, msg->params[1]), msg->params[1],
idle, unit, (idle != 1 ? "s" : ""),
(signon ? ", signed on " : ""),
24, (signon ? ctime(&signon) : "")
);
}
static void handleReplyWhoisChannels(struct Message *msg) {
require(msg, false, 3);
if (!replies.whois) return;
char buf[1024];
size_t len = 0;
while (msg->params[2]) {
char *channel = strsep(&msg->params[2], " ");
channel += strspn(channel, self.prefixes);
int n = snprintf(
&buf[len], sizeof(buf) - len,
"%s\3%02d%s\3", (len ? ", " : ""), hash(channel), channel
);
assert(n > 0 && len + n < sizeof(buf));
len += n;
}
uiFormat(
Network, Warm, tagTime(msg),
"\3%02d%s\3\tis in %s",
completeColor(Network, msg->params[1]), msg->params[1], buf
);
}
static void handleReplyWhoisGeneric(struct Message *msg) {
require(msg, false, 3);
if (!replies.whois) return;
if (msg->params[3]) {
msg->params[0] = msg->params[2];
msg->params[2] = msg->params[3];
msg->params[3] = msg->params[0];
}
uiFormat(
Network, Warm, tagTime(msg),
"\3%02d%s\3\t%s%s%s",
completeColor(Network, msg->params[1]), msg->params[1],
msg->params[2],
(msg->params[3] ? " " : ""),
(msg->params[3] ? msg->params[3] : "")
);
}
static void handleReplyEndOfWhois(struct Message *msg) {
require(msg, false, 2);
if (!replies.whois) return;
if (!self.nick || strcmp(msg->params[1], self.nick)) {
completeRemove(Network, msg->params[1]);
}
replies.whois--;
}
static bool isAction(struct Message *msg) {
if (strncmp(msg->params[1], "\1ACTION ", 8)) return false;
msg->params[1] += 8;
size_t len = strlen(msg->params[1]);
if (msg->params[1][len - 1] == '\1') msg->params[1][len - 1] = '\0';
return true;
}
static bool isMention(const struct Message *msg) {
if (!self.nick) return false;
size_t len = strlen(self.nick);
const char *match = msg->params[1];
while (NULL != (match = strcasestr(match, self.nick))) {
char a = (match > msg->params[1] ? match[-1] : ' ');
char b = (match[len] ? match[len] : ' ');
if ((isspace(a) || ispunct(a)) && (isspace(b) || ispunct(b))) {
return true;
}
match = &match[len];
}
return false;
}
static const char *colorMentions(size_t id, struct Message *msg) {
char *split = strchr(msg->params[1], ':');
if (!split) split = strchr(msg->params[1], ' ');
if (!split) split = &msg->params[1][strlen(msg->params[1])];
for (char *ch = msg->params[1]; ch < split; ++ch) {
if (iscntrl(*ch)) return "";
}
char delimit = *split;
char *mention = msg->params[1];
msg->params[1] = (delimit ? &split[1] : split);
*split = '\0';
static char buf[1024];
FILE *str = fmemopen(buf, sizeof(buf), "w");
if (!str) err(EX_OSERR, "fmemopen");
while (*mention) {
size_t skip = strspn(mention, ",<> ");
fwrite(mention, skip, 1, str);
mention += skip;
size_t len = strcspn(mention, ",<> ");
char punct = mention[len];
mention[len] = '\0';
fprintf(str, "\3%02d%s\3", completeColor(id, mention), mention);
mention[len] = punct;
mention += len;
}
fputc(delimit, str);
fclose(str);
buf[sizeof(buf) - 1] = '\0';
return buf;
}
static void handlePrivmsg(struct Message *msg) {
require(msg, true, 2);
bool query = !strchr(self.chanTypes, msg->params[0][0]);
bool network = strchr(msg->nick, '.');
bool mine = self.nick && !strcmp(msg->nick, self.nick);
size_t id;
if (query && network) {
id = Network;
} else if (query && !mine) {
id = idFor(msg->nick);
idColors[id] = hash(msg->user);
} else {
id = idFor(msg->params[0]);
}
bool notice = (msg->cmd[0] == 'N');
bool action = isAction(msg);
bool mention = !mine && isMention(msg);
if (!notice && !mine) completeTouch(id, msg->nick, hash(msg->user));
urlScan(id, msg->nick, msg->params[1]);
if (notice) {
uiFormat(
id, Warm, tagTime(msg),
"%s\3%d-%s-\17\3%d\t%s",
(mention ? "\26" : ""), hash(msg->user), msg->nick,
LightGray, msg->params[1]
);
} else if (action) {
uiFormat(
id, (mention || query ? Hot : Warm), tagTime(msg),
"%s\35\3%d* %s\17\35\t%s",
(mention ? "\26" : ""), hash(msg->user), msg->nick, msg->params[1]
);
} else {
const char *mentions = colorMentions(id, msg);
uiFormat(
id, (mention || query ? Hot : Warm), tagTime(msg),
"%s\3%d<%s>\17\t%s%s",
(mention ? "\26" : ""), hash(msg->user), msg->nick,
mentions, msg->params[1]
);
}
}
static void handlePing(struct Message *msg) {
require(msg, false, 1);
ircFormat("PONG :%s\r\n", msg->params[0]);
}
static void handleError(struct Message *msg) {
require(msg, false, 1);
errx(EX_UNAVAILABLE, "%s", msg->params[0]);
}
static const struct Handler {
const char *cmd;
Handler *fn;
} Handlers[] = {
{ "001", handleReplyWelcome },
{ "005", handleReplyISupport },
{ "276", handleReplyWhoisGeneric },
{ "307", handleReplyWhoisGeneric },
{ "311", handleReplyWhoisUser },
{ "312", handleReplyWhoisServer },
{ "313", handleReplyWhoisGeneric },
{ "317", handleReplyWhoisIdle },
{ "318", handleReplyEndOfWhois },
{ "319", handleReplyWhoisChannels },
{ "330", handleReplyWhoisGeneric },
{ "331", handleReplyNoTopic },
{ "332", handleReplyTopic },
{ "353", handleReplyNames },
{ "366", handleReplyEndOfNames },
{ "372", handleReplyMOTD },
{ "432", handleErrorErroneousNickname },
{ "433", handleErrorNicknameInUse },
{ "671", handleReplyWhoisGeneric },
{ "900", handleReplyLoggedIn },
{ "904", handleErrorSASLFail },
{ "905", handleErrorSASLFail },
{ "906", handleErrorSASLFail },
{ "AUTHENTICATE", handleAuthenticate },
{ "CAP", handleCap },
{ "ERROR", handleError },
{ "JOIN", handleJoin },
{ "KICK", handleKick },
{ "NICK", handleNick },
{ "NOTICE", handlePrivmsg },
{ "PART", handlePart },
{ "PING", handlePing },
{ "PRIVMSG", handlePrivmsg },
{ "QUIT", handleQuit },
{ "TOPIC", handleTopic },
};
static int compar(const void *cmd, const void *_handler) {
const struct Handler *handler = _handler;
return strcmp(cmd, handler->cmd);
}
void handle(struct Message msg) {
if (!msg.cmd) return;
const struct Handler *handler = bsearch(
msg.cmd, Handlers, ARRAY_LEN(Handlers), sizeof(*handler), compar
);
if (handler) handler->fn(&msg);
}

250
irc.c 100644
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@ -0,0 +1,250 @@
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <err.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sysexits.h>
#include <tls.h>
#include <unistd.h>
#include "chat.h"
struct tls *client;
static byte *readFile(size_t *len, FILE *file) {
struct stat stat;
int error = fstat(fileno(file), &stat);
if (error) err(EX_IOERR, "fstat");
byte *buf = malloc(stat.st_size);
if (!buf) err(EX_OSERR, "malloc");
rewind(file);
*len = fread(buf, 1, stat.st_size, file);
if (ferror(file)) err(EX_IOERR, "fread");
return buf;
}
void ircConfig(bool insecure, FILE *cert, FILE *priv) {
struct tls_config *config = tls_config_new();
if (!config) errx(EX_SOFTWARE, "tls_config_new");
int error = tls_config_set_ciphers(config, "compat");
if (error) {
errx(
EX_SOFTWARE, "tls_config_set_ciphers: %s",
tls_config_error(config)
);
}
if (insecure) {
tls_config_insecure_noverifycert(config);
tls_config_insecure_noverifyname(config);
}
if (cert) {
size_t len;
byte *buf = readFile(&len, cert);
error = tls_config_set_cert_mem(config, buf, len);
if (error) {
errx(
EX_CONFIG, "tls_config_set_cert_mem: %s",
tls_config_error(config)
);
}
if (priv) {
free(buf);
buf = readFile(&len, priv);
}
error = tls_config_set_key_mem(config, buf, len);
if (error) {
errx(
EX_CONFIG, "tls_config_set_key_mem: %s",
tls_config_error(config)
);
}
explicit_bzero(buf, len);
free(buf);
}
client = tls_client();
if (!client) errx(EX_SOFTWARE, "tls_client");
error = tls_configure(client, config);
if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
tls_config_free(config);
}
int ircConnect(const char *host, const char *port) {
assert(client);
struct addrinfo *head;
struct addrinfo hints = {
.ai_family = AF_UNSPEC,
.ai_socktype = SOCK_STREAM,
.ai_protocol = IPPROTO_TCP,
};
int error = getaddrinfo(host, port, &hints, &head);
if (error) errx(EX_NOHOST, "%s:%s: %s", host, port, gai_strerror(error));
int sock = -1;
for (struct addrinfo *ai = head; ai; ai = ai->ai_next) {
sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sock < 0) err(EX_OSERR, "socket");
error = connect(sock, ai->ai_addr, ai->ai_addrlen);
if (!error) break;
close(sock);
sock = -1;
}
if (sock < 0) err(EX_UNAVAILABLE, "%s:%s", host, port);
freeaddrinfo(head);
error = tls_connect_socket(client, sock, host);
if (error) errx(EX_PROTOCOL, "tls_connect: %s", tls_error(client));
error = tls_handshake(client);
if (error) errx(EX_PROTOCOL, "tls_handshake: %s", tls_error(client));
return sock;
}
static void debug(char dir, const char *line) {
if (!self.debug) return;
size_t len = strcspn(line, "\r\n");
uiFormat(
Debug, Cold, NULL, "\3%d%c%c\3\t%.*s",
Gray, dir, dir, (int)len, line
);
if (!isatty(STDERR_FILENO)) {
fprintf(stderr, "%c%c %.*s\n", dir, dir, (int)len, line);
}
}
void ircSend(const char *ptr, size_t len) {
assert(client);
while (len) {
ssize_t ret = tls_write(client, ptr, len);
if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client));
ptr += ret;
len -= ret;
}
}
void ircFormat(const char *format, ...) {
char buf[1024];
va_list ap;
va_start(ap, format);
int len = vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
assert((size_t)len < sizeof(buf));
debug('<', buf);
ircSend(buf, len);
}
static const char *TagNames[TagCap] = {
#define X(name, id) [id] = name,
ENUM_TAG
#undef X
};
static void unescape(char *tag) {
for (;;) {
tag = strchr(tag, '\\');
if (!tag) break;
switch (tag[1]) {
break; case ':': tag[1] = ';';
break; case 's': tag[1] = ' ';
break; case 'r': tag[1] = '\r';
break; case 'n': tag[1] = '\n';
}
memmove(tag, &tag[1], strlen(&tag[1]) + 1);
if (tag[0]) tag = &tag[1];
}
}
static struct Message parse(char *line) {
struct Message msg = { .cmd = NULL };
if (line[0] == '@') {
char *tags = 1 + strsep(&line, " ");
while (tags) {
char *tag = strsep(&tags, ";");
char *key = strsep(&tag, "=");
for (size_t i = 0; i < TagCap; ++i) {
if (strcmp(key, TagNames[i])) continue;
unescape(tag);
msg.tags[i] = tag;
break;
}
}
}
if (line[0] == ':') {
char *origin = 1 + strsep(&line, " ");
msg.nick = strsep(&origin, "!");
msg.user = strsep(&origin, "@");
msg.host = origin;
}
msg.cmd = strsep(&line, " ");
for (size_t i = 0; line && i < ParamCap; ++i) {
if (line[0] == ':') {
msg.params[i] = &line[1];
break;
}
msg.params[i] = strsep(&line, " ");
}
return msg;
}
void ircRecv(void) {
static char buf[8191 + 512];
static size_t len = 0;
assert(client);
ssize_t ret = tls_read(client, &buf[len], sizeof(buf) - len);
if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) return;
if (ret < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
if (!ret) errx(EX_PROTOCOL, "server closed connection");
len += ret;
char *crlf;
char *line = buf;
for (;;) {
crlf = memmem(line, &buf[len] - line, "\r\n", 2);
if (!crlf) break;
*crlf = '\0';
debug('>', line);
handle(parse(line));
line = crlf + 2;
}
len -= line - buf;
memmove(buf, line, len);
}

974
ui.c 100644
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@ -0,0 +1,974 @@
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#define _XOPEN_SOURCE_EXTENDED
#include <assert.h>
#include <ctype.h>
#include <curses.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <term.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#include "chat.h"
// Annoying stuff from <term.h>:
#undef lines
#undef tab
#ifndef A_ITALIC
#define A_ITALIC A_NORMAL
#endif
#define BOTTOM (LINES - 1)
#define RIGHT (COLS - 1)
#define PAGE_LINES (LINES - 2)
static WINDOW *status;
static WINDOW *marker;
static WINDOW *input;
enum { BufferCap = 512 };
struct Buffer {
time_t times[BufferCap];
char *lines[BufferCap];
size_t len;
};
static_assert(!(BufferCap & (BufferCap - 1)), "BufferCap is power of two");
static void bufferPush(struct Buffer *buffer, time_t time, const char *line) {
size_t i = buffer->len++ % BufferCap;
free(buffer->lines[i]);
buffer->times[i] = time;
buffer->lines[i] = strdup(line);
if (!buffer->lines[i]) err(EX_OSERR, "strdup");
}
static time_t bufferTime(const struct Buffer *buffer, size_t i) {
return buffer->times[(buffer->len + i) % BufferCap];
}
static const char *bufferLine(const struct Buffer *buffer, size_t i) {
return buffer->lines[(buffer->len + i) % BufferCap];
}
enum { WindowLines = BufferCap };
struct Window {
size_t id;
struct Buffer buffer;
WINDOW *pad;
int scroll;
bool mark;
enum Heat heat;
int unreadCount;
int unreadLines;
struct Window *prev;
struct Window *next;
};
static struct {
struct Window *active;
struct Window *other;
struct Window *head;
struct Window *tail;
} windows;
static void windowAdd(struct Window *window) {
if (windows.tail) windows.tail->next = window;
window->prev = windows.tail;
window->next = NULL;
windows.tail = window;
if (!windows.head) windows.head = window;
}
static void windowRemove(struct Window *window) {
if (window->prev) window->prev->next = window->next;
if (window->next) window->next->prev = window->prev;
if (windows.head == window) windows.head = window->next;
if (windows.tail == window) windows.tail = window->prev;
}
static struct Window *windowFor(size_t id) {
struct Window *window;
for (window = windows.head; window; window = window->next) {
if (window->id == id) return window;
}
window = calloc(1, sizeof(*window));
if (!window) err(EX_OSERR, "malloc");
window->id = id;
window->pad = newpad(WindowLines, COLS);
if (!window->pad) err(EX_OSERR, "newpad");
scrollok(window->pad, true);
wmove(window->pad, WindowLines - 1, 0);
window->mark = true;
windowAdd(window);
return window;
}
static short colorPairs;
static void colorInit(void) {
start_color();
use_default_colors();
for (short pair = 0; pair < 16; ++pair) {
init_pair(1 + pair, pair % COLORS, -1);
}
colorPairs = 17;
}
static attr_t colorAttr(short fg) {
if (fg != COLOR_BLACK && fg % COLORS == COLOR_BLACK) return A_BOLD;
if (COLORS > 8) return A_NORMAL;
return (fg / COLORS & 1 ? A_BOLD : A_NORMAL);
}
static short colorPair(short fg, short bg) {
fg %= COLORS;
bg %= COLORS;
if (bg == -1 && fg < 16) return 1 + fg;
for (short pair = 17; pair < colorPairs; ++pair) {
short f, b;
pair_content(pair, &f, &b);
if (f == fg && b == bg) return pair;
}
init_pair(colorPairs, fg, bg);
return colorPairs++;
}
// XXX: Assuming terminals will be fine with these even if they're unsupported,
// since they're "private" modes.
static const char *EnterFocusMode = "\33[?1004h";
static const char *ExitFocusMode = "\33[?1004l";
static const char *EnterPasteMode = "\33[?2004h";
static const char *ExitPasteMode = "\33[?2004l";
// Gain use of C-q, C-s, C-c, C-z, C-y, C-o.
static void acquireKeys(void) {
struct termios term;
int error = tcgetattr(STDOUT_FILENO, &term);
if (error) err(EX_OSERR, "tcgetattr");
term.c_iflag &= ~IXON;
term.c_cc[VINTR] = _POSIX_VDISABLE;
term.c_cc[VSUSP] = _POSIX_VDISABLE;
term.c_cc[VDSUSP] = _POSIX_VDISABLE;
term.c_cc[VDISCARD] = _POSIX_VDISABLE;
error = tcsetattr(STDOUT_FILENO, TCSADRAIN, &term);
if (error) err(EX_OSERR, "tcsetattr");
}
static void errExit(void) {
reset_shell_mode();
}
#define ENUM_KEY \
X(KeyMeta0, "\0330") \
X(KeyMeta1, "\0331") \
X(KeyMeta2, "\0332") \
X(KeyMeta3, "\0333") \
X(KeyMeta4, "\0334") \
X(KeyMeta5, "\0335") \
X(KeyMeta6, "\0336") \
X(KeyMeta7, "\0337") \
X(KeyMeta8, "\0338") \
X(KeyMeta9, "\0339") \
X(KeyMetaA, "\33a") \
X(KeyMetaB, "\33b") \
X(KeyMetaD, "\33d") \
X(KeyMetaF, "\33f") \
X(KeyMetaL, "\33l") \
X(KeyMetaM, "\33m") \
X(KeyMetaU, "\33u") \
X(KeyMetaSlash, "\33/") \
X(KeyFocusIn, "\33[I") \
X(KeyFocusOut, "\33[O") \
X(KeyPasteOn, "\33[200~") \
X(KeyPasteOff, "\33[201~")
enum {
KeyMax = KEY_MAX,
#define X(id, seq) id,
ENUM_KEY
#undef X
};
void uiInit(void) {
initscr();
cbreak();
noecho();
acquireKeys();
def_prog_mode();
atexit(errExit);
colorInit();
if (!to_status_line && !strncmp(termname(), "xterm", 5)) {
to_status_line = "\33]2;";
from_status_line = "\7";
}
#define X(id, seq) define_key(seq, id);
ENUM_KEY
#undef X
status = newwin(1, COLS, 0, 0);
if (!status) err(EX_OSERR, "newwin");
marker = newwin(1, COLS, LINES - 2, 0);
short fg = 8 + COLOR_BLACK;
wbkgd(marker, '~' | colorAttr(fg) | COLOR_PAIR(colorPair(fg, -1)));
input = newpad(1, 512);
if (!input) err(EX_OSERR, "newpad");
keypad(input, true);
nodelay(input, true);
windows.active = windowFor(Network);
uiShow();
}
static bool hidden;
static bool waiting;
static char title[256];
static char prevTitle[sizeof(title)];
void uiDraw(void) {
if (hidden) return;
wnoutrefresh(status);
struct Window *window = windows.active;
pnoutrefresh(
window->pad,
WindowLines - window->scroll - PAGE_LINES + !!window->scroll, 0,
1, 0,
BOTTOM - 1 - !!window->scroll, RIGHT
);
if (window->scroll) {
touchwin(marker);
wnoutrefresh(marker);
}
int y, x;
getyx(input, y, x);
pnoutrefresh(
input,
0, (x + 1 > RIGHT ? x + 1 - RIGHT : 0),
BOTTOM, 0,
BOTTOM, RIGHT
);
doupdate();
if (!to_status_line) return;
if (!strcmp(title, prevTitle)) return;
strcpy(prevTitle, title);
putp(to_status_line);
putp(title);
putp(from_status_line);
fflush(stdout);
}
void uiShow(void) {
prevTitle[0] = '\0';
putp(EnterFocusMode);
putp(EnterPasteMode);
fflush(stdout);
hidden = false;
}
void uiHide(void) {
hidden = true;
putp(ExitFocusMode);
putp(ExitPasteMode);
endwin();
}
struct Style {
attr_t attr;
enum Color fg, bg;
};
static const struct Style Reset = { A_NORMAL, Default, Default };
static const short Colors[100] = {
[Default] = -1,
[White] = 8 + COLOR_WHITE,
[Black] = 0 + COLOR_BLACK,
[Blue] = 0 + COLOR_BLUE,
[Green] = 0 + COLOR_GREEN,
[Red] = 8 + COLOR_RED,
[Brown] = 0 + COLOR_RED,
[Magenta] = 0 + COLOR_MAGENTA,
[Orange] = 0 + COLOR_YELLOW,
[Yellow] = 8 + COLOR_YELLOW,
[LightGreen] = 8 + COLOR_GREEN,
[Cyan] = 0 + COLOR_CYAN,
[LightCyan] = 8 + COLOR_CYAN,
[LightBlue] = 8 + COLOR_BLUE,
[Pink] = 8 + COLOR_MAGENTA,
[Gray] = 8 + COLOR_BLACK,
[LightGray] = 0 + COLOR_WHITE,
52, 94, 100, 58, 22, 29, 23, 24, 17, 54, 53, 89,
88, 130, 142, 64, 28, 35, 30, 25, 18, 91, 90, 125,
124, 166, 184, 106, 34, 49, 37, 33, 19, 129, 127, 161,
196, 208, 226, 154, 46, 86, 51, 75, 21, 171, 201, 198,
203, 215, 227, 191, 83, 122, 87, 111, 63, 177, 207, 205,
217, 223, 229, 193, 157, 158, 159, 153, 147, 183, 219, 212,
16, 233, 235, 237, 239, 241, 244, 247, 250, 254, 231,
};
enum { B = '\2', C = '\3', O = '\17', R = '\26', I = '\35', U = '\37' };
static void styleParse(struct Style *style, const char **str, size_t *len) {
switch (**str) {
break; case B: (*str)++; style->attr ^= A_BOLD;
break; case O: (*str)++; *style = Reset;
break; case R: (*str)++; style->attr ^= A_REVERSE;
break; case I: (*str)++; style->attr ^= A_ITALIC;
break; case U: (*str)++; style->attr ^= A_UNDERLINE;
break; case C: {
(*str)++;
if (!isdigit(**str)) {
style->fg = Default;
style->bg = Default;
break;
}
style->fg = *(*str)++ - '0';
if (isdigit(**str)) style->fg = style->fg * 10 + *(*str)++ - '0';
if ((*str)[0] != ',' || !isdigit((*str)[1])) break;
(*str)++;
style->bg = *(*str)++ - '0';
if (isdigit(**str)) style->bg = style->bg * 10 + *(*str)++ - '0';
}
}
*len = strcspn(*str, (const char[]) { B, C, O, R, I, U, '\0' });
}
static void statusAdd(const char *str) {
size_t len;
struct Style style = Reset;
while (*str) {
styleParse(&style, &str, &len);
wattr_set(
status,
style.attr | colorAttr(Colors[style.fg]),
colorPair(Colors[style.fg], Colors[style.bg]),
NULL
);
waddnstr(status, str, len);
str += len;
}
}
static void statusUpdate(void) {
int otherUnread = 0;
enum Heat otherHeat = Cold;
wmove(status, 0, 0);
int num;
const struct Window *window;
for (num = 0, window = windows.head; window; ++num, window = window->next) {
if (!window->heat && window != windows.active) continue;
if (window != windows.active) {
otherUnread += window->unreadCount;
if (window->heat > otherHeat) otherHeat = window->heat;
}
int trunc;
char buf[256];
snprintf(
buf, sizeof(buf), "\3%d%s %d %s %n(\3%02d%d\3%d) ",
idColors[window->id], (window == windows.active ? "\26" : ""),
num, idNames[window->id],
&trunc, (window->heat > Warm ? White : idColors[window->id]),
window->unreadCount,
idColors[window->id]
);
if (!window->mark || !window->unreadCount) buf[trunc] = '\0';
statusAdd(buf);
}
wclrtoeol(status);
window = windows.active;
snprintf(title, sizeof(title), "%s %s", self.network, idNames[window->id]);
if (window->mark && window->unreadCount) {
snprintf(
&title[strlen(title)], sizeof(title) - strlen(title),
" (%d%s)", window->unreadCount, (window->heat > Warm ? "!" : "")
);
}
if (otherUnread) {
snprintf(
&title[strlen(title)], sizeof(title) - strlen(title),
" (+%d%s)", otherUnread, (otherHeat > Warm ? "!" : "")
);
}
}
static void mark(struct Window *window) {
if (window->scroll) return;
window->mark = true;
window->unreadCount = 0;
window->unreadLines = 0;
}
static void unmark(struct Window *window) {
if (!window->scroll) {
window->mark = false;
window->heat = Cold;
}
statusUpdate();
}
static void windowScroll(struct Window *window, int n) {
mark(window);
window->scroll += n;
if (window->scroll > WindowLines - PAGE_LINES) {
window->scroll = WindowLines - PAGE_LINES;
}
if (window->scroll < 0) window->scroll = 0;
unmark(window);
}
static void windowScrollUnread(struct Window *window) {
window->scroll = 0;
windowScroll(window, window->unreadLines - PAGE_LINES + 1);
}
static int wordWidth(const char *str) {
size_t len = strcspn(str, " ");
int width = 0;
while (len) {
wchar_t wc;
int n = mbtowc(&wc, str, len);
if (n < 1) return width + len;
width += (iswprint(wc) ? wcwidth(wc) : 0);
str += n;
len -= n;
}
return width;
}
static int wordWrap(WINDOW *win, const char *str) {
int y, x, width;
getmaxyx(win, y, width);
size_t len;
int lines = 0;
int align = 0;
struct Style style = Reset;
while (*str) {
if (*str == '\t') {
if (align) {
waddch(win, '\t');
str++;
} else {
waddch(win, ' ');
getyx(win, y, align);
str++;
}
} else if (*str == ' ') {
getyx(win, y, x);
const char *word = &str[strspn(str, " ")];
if (width - x - 1 <= wordWidth(word)) {
lines += 1 + (align + wordWidth(word)) / width;
waddch(win, '\n');
getyx(win, y, x);
wmove(win, y, align);
str = word;
} else {
waddch(win, ' ');
str++;
}
}
styleParse(&style, &str, &len);
size_t ws = strcspn(str, "\t ");
if (ws < len) len = ws;
wattr_set(
win,
style.attr | colorAttr(Colors[style.fg]),
colorPair(Colors[style.fg], Colors[style.bg]),
NULL
);
waddnstr(win, str, len);
str += len;
}
return lines;
}
void uiWrite(size_t id, enum Heat heat, const time_t *src, const char *str) {
struct Window *window = windowFor(id);
time_t clock = (src ? *src : time(NULL));
bufferPush(&window->buffer, clock, str);
int lines = 1;
waddch(window->pad, '\n');
if (window->mark && heat > Cold) {
if (!window->unreadCount++) {
lines++;
waddch(window->pad, '\n');
}
if (window->heat < heat) window->heat = heat;
statusUpdate();
}
lines += wordWrap(window->pad, str);
window->unreadLines += lines;
if (window->scroll) windowScroll(window, lines);
if (heat > Warm) beep();
}
void uiFormat(
size_t id, enum Heat heat, const time_t *time, const char *format, ...
) {
char buf[1024];
va_list ap;
va_start(ap, format);
int len = vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
assert((size_t)len < sizeof(buf));
uiWrite(id, heat, time, buf);
}
static void reflow(struct Window *window) {
werase(window->pad);
wmove(window->pad, WindowLines - 1, 0);
window->unreadLines = 0;
for (size_t i = 0; i < BufferCap; ++i) {
const char *line = bufferLine(&window->buffer, i);
if (!line) continue;
waddch(window->pad, '\n');
if (i >= (size_t)(BufferCap - window->unreadCount)) {
window->unreadLines += 1 + wordWrap(window->pad, line);
} else {
wordWrap(window->pad, line);
}
}
}
static void resize(void) {
mvwin(marker, LINES - 2, 0);
int height, width;
getmaxyx(windows.active->pad, height, width);
if (width == COLS) return;
for (struct Window *window = windows.head; window; window = window->next) {
wresize(window->pad, BufferCap, COLS);
reflow(window);
}
statusUpdate();
}
static void bufferList(const struct Buffer *buffer) {
uiHide();
waiting = true;
for (size_t i = 0; i < BufferCap; ++i) {
time_t time = bufferTime(buffer, i);
const char *line = bufferLine(buffer, i);
if (!line) continue;
struct tm *tm = localtime(&time);
if (!tm) continue;
char buf[sizeof("[00:00:00]")];
strftime(buf, sizeof(buf), "[%T]", tm);
vid_attr(colorAttr(Colors[Gray]), colorPair(Colors[Gray], -1), NULL);
printf("%s ", buf);
size_t len;
bool align = false;
struct Style style = Reset;
while (*line) {
if (*line == '\t') {
printf("%c", (align ? '\t' : ' '));
align = true;
line++;
}
styleParse(&style, &line, &len);
size_t tab = strcspn(line, "\t");
if (tab < len) len = tab;
vid_attr(
style.attr | colorAttr(Colors[style.fg]),
colorPair(Colors[style.fg], Colors[style.bg]),
NULL
);
if (len) printf("%.*s", (int)len, line);
line += len;
}
printf("\n");
}
}
static void inputAdd(struct Style *style, const char *str) {
size_t len;
while (*str) {
const char *code = str;
styleParse(style, &str, &len);
wattr_set(input, A_BOLD | A_REVERSE, 0, NULL);
switch (*code) {
break; case B: waddch(input, 'B');
break; case C: waddch(input, 'C');
break; case O: waddch(input, 'O');
break; case R: waddch(input, 'R');
break; case I: waddch(input, 'I');
break; case U: waddch(input, 'U');
}
if (str - code > 1) waddnstr(input, &code[1], str - &code[1]);
wattr_set(
input,
style->attr | colorAttr(Colors[style->fg]),
colorPair(Colors[style->fg], Colors[style->bg]),
NULL
);
waddnstr(input, str, len);
str += len;
}
}
static void inputUpdate(void) {
size_t id = windows.active->id;
size_t pos;
char *buf = editBuffer(&pos);
const char *skip = NULL;
struct Style init = { .fg = self.color, .bg = Default };
struct Style rest = Reset;
const char *prefix = "";
const char *prompt = (self.nick ? self.nick : "");
const char *suffix = "";
if (NULL != (skip = commandIsPrivmsg(id, buf))) {
prefix = "<"; suffix = "> ";
} else if (NULL != (skip = commandIsNotice(id, buf))) {
prefix = "-"; suffix = "- ";
rest.fg = LightGray;
} else if (NULL != (skip = commandIsAction(id, buf))) {
init.attr |= A_ITALIC;
prefix = "* "; suffix = " ";
rest.attr |= A_ITALIC;
} else if (id == Debug) {
skip = buf;
init.fg = Gray;
prompt = "<< ";
} else {
prompt = "";
}
if (skip && skip > &buf[pos]) {
skip = NULL;
prefix = prompt = suffix = "";
}
int y, x;
wmove(input, 0, 0);
wattr_set(
input,
init.attr | colorAttr(Colors[init.fg]),
colorPair(Colors[init.fg], Colors[init.bg]),
NULL
);
waddstr(input, prefix);
waddstr(input, prompt);
waddstr(input, suffix);
struct Style style = rest;
char p = buf[pos];
buf[pos] = '\0';
inputAdd(&style, (skip ? skip : buf));
getyx(input, y, x);
buf[pos] = p;
inputAdd(&style, &buf[pos]);
wclrtoeol(input);
wmove(input, y, x);
}
static void windowShow(struct Window *window) {
if (!window) return;
touchwin(window->pad);
windows.other = windows.active;
windows.active = window;
mark(windows.other);
unmark(windows.active);
inputUpdate();
}
void uiShowID(size_t id) {
windowShow(windowFor(id));
}
void uiShowNum(size_t num) {
struct Window *window = windows.head;
for (size_t i = 0; i < num; ++i) {
window = window->next;
if (!window) return;
}
windowShow(window);
}
static void windowClose(struct Window *window) {
if (window->id == Network) return;
if (windows.active == window) {
if (windows.other && windows.other != window) {
windowShow(windows.other);
} else {
windowShow(window->prev ? window->prev : window->next);
}
}
if (windows.other == window) windows.other = NULL;
windowRemove(window);
for (size_t i = 0; i < BufferCap; ++i) {
free(window->buffer.lines[i]);
}
delwin(window->pad);
free(window);
statusUpdate();
}
void uiCloseID(size_t id) {
windowClose(windowFor(id));
}
void uiCloseNum(size_t num) {
struct Window *window = windows.head;
for (size_t i = 0; i < num; ++i) {
window = window->next;
if (!window) return;
}
windowClose(window);
}
static void showAuto(void) {
static struct Window *other;
if (windows.other != other) {
other = windows.active;
}
for (struct Window *window = windows.head; window; window = window->next) {
if (window->heat < Hot) continue;
windowShow(window);
windows.other = other;
return;
}
for (struct Window *window = windows.head; window; window = window->next) {
if (window->heat < Warm) continue;
windowShow(window);
windows.other = other;
return;
}
windowShow(windows.other);
}
static void keyCode(int code) {
struct Window *window = windows.active;
size_t id = window->id;
switch (code) {
break; case KEY_RESIZE: resize();
break; case KeyFocusIn: unmark(window);
break; case KeyFocusOut: mark(window);
break; case KeyPasteOn:; // TODO
break; case KeyPasteOff:; // TODO
break; case KeyMetaSlash: windowShow(windows.other);
break; case KeyMetaA: showAuto();
break; case KeyMetaB: edit(id, EditPrevWord, 0);
break; case KeyMetaD: edit(id, EditDeleteNextWord, 0);
break; case KeyMetaF: edit(id, EditNextWord, 0);
break; case KeyMetaL: bufferList(&window->buffer);
break; case KeyMetaM: waddch(window->pad, '\n');
break; case KeyMetaU: windowScrollUnread(window);
break; case KEY_BACKSPACE: edit(id, EditDeletePrev, 0);
break; case KEY_DC: edit(id, EditDeleteNext, 0);
break; case KEY_DOWN: windowScroll(window, -1);
break; case KEY_END: edit(id, EditTail, 0);
break; case KEY_ENTER: edit(id, EditEnter, 0);
break; case KEY_HOME: edit(id, EditHead, 0);
break; case KEY_LEFT: edit(id, EditPrev, 0);
break; case KEY_NPAGE: windowScroll(window, -(PAGE_LINES - 2));
break; case KEY_PPAGE: windowScroll(window, +(PAGE_LINES - 2));
break; case KEY_RIGHT: edit(id, EditNext, 0);
break; case KEY_UP: windowScroll(window, +1);
break; default: {
if (code >= KeyMeta0 && code <= KeyMeta9) {
uiShowNum(code - KeyMeta0);
}
}
}
}
static void keyCtrl(wchar_t ch) {
size_t id = windows.active->id;
switch (ch ^ L'@') {
break; case L'?': edit(id, EditDeletePrev, 0);
break; case L'A': edit(id, EditHead, 0);
break; case L'B': edit(id, EditPrev, 0);
break; case L'C': raise(SIGINT);
break; case L'D': edit(id, EditDeleteNext, 0);
break; case L'E': edit(id, EditTail, 0);
break; case L'F': edit(id, EditNext, 0);
break; case L'H': edit(id, EditDeletePrev, 0);
break; case L'I': edit(id, EditComplete, 0);
break; case L'J': edit(id, EditEnter, 0);
break; case L'K': edit(id, EditDeleteTail, 0);
break; case L'L': clearok(curscr, true);
break; case L'N': windowShow(windows.active->next);
break; case L'O': windowShow(windows.other);
break; case L'P': windowShow(windows.active->prev);
break; case L'U': edit(id, EditDeleteHead, 0);
break; case L'W': edit(id, EditDeletePrevWord, 0);
break; case L'Y': edit(id, EditPaste, 0);
}
}
static void keyStyle(wchar_t ch) {
size_t id = windows.active->id;
switch (iswcntrl(ch) ? ch ^ L'@' : towupper(ch)) {
break; case L'B': edit(id, EditInsert, B);
break; case L'C': edit(id, EditInsert, C);
break; case L'I': edit(id, EditInsert, I);
break; case L'O': edit(id, EditInsert, O);
break; case L'R': edit(id, EditInsert, R);
break; case L'U': edit(id, EditInsert, U);
}
}
void uiRead(void) {
if (hidden) {
if (waiting) {
uiShow();
flushinp();
waiting = false;
} else {
return;
}
}
int ret;
wint_t ch;
static bool style;
while (ERR != (ret = wget_wch(input, &ch))) {
if (ret == KEY_CODE_YES) {
keyCode(ch);
} else if (ch == (L'Z' ^ L'@')) {
style = true;
continue;
} else if (style) {
keyStyle(ch);
} else if (iswcntrl(ch)) {
keyCtrl(ch);
} else {
edit(windows.active->id, EditInsert, ch);
}
style = false;
}
inputUpdate();
}
static const size_t Signatures[] = {
0x6C72696774616301,
};
static size_t signatureVersion(size_t signature) {
for (size_t i = 0; i < ARRAY_LEN(Signatures); ++i) {
if (signature == Signatures[i]) return i;
}
err(EX_DATAERR, "unknown file signature %zX", signature);
}
static int writeSize(FILE *file, size_t value) {
return (fwrite(&value, sizeof(value), 1, file) ? 0 : -1);
}
static int writeTime(FILE *file, time_t time) {
return (fwrite(&time, sizeof(time), 1, file) ? 0 : -1);
}
static int writeString(FILE *file, const char *str) {
return (fwrite(str, strlen(str) + 1, 1, file) ? 0 : -1);
}
int uiSave(const char *name) {
FILE *file = dataOpen(name, "w");
if (!file) return -1;
if (writeSize(file, Signatures[0])) return -1;
const struct Window *window;
for (window = windows.head; window; window = window->next) {
if (writeString(file, idNames[window->id])) return -1;
for (size_t i = 0; i < BufferCap; ++i) {
time_t time = bufferTime(&window->buffer, i);
const char *line = bufferLine(&window->buffer, i);
if (!line) continue;
if (writeTime(file, time)) return -1;
if (writeString(file, line)) return -1;
}
if (writeTime(file, 0)) return -1;
}
return fclose(file);
}
static size_t readSize(FILE *file) {
size_t value;
fread(&value, sizeof(value), 1, file);
if (ferror(file)) err(EX_IOERR, "fread");
if (feof(file)) errx(EX_DATAERR, "unexpected eof");
return value;
}
static time_t readTime(FILE *file) {
time_t time;
fread(&time, sizeof(time), 1, file);
if (ferror(file)) err(EX_IOERR, "fread");
if (feof(file)) errx(EX_DATAERR, "unexpected eof");
return time;
}
static ssize_t readString(FILE *file, char **buf, size_t *cap) {
ssize_t len = getdelim(buf, cap, '\0', file);
if (len < 0 && !feof(file)) err(EX_IOERR, "getdelim");
return len;
}
void uiLoad(const char *name) {
FILE *file = dataOpen(name, "r");
if (!file) {
if (errno != ENOENT) exit(EX_NOINPUT);
file = dataOpen(name, "w");
if (!file) exit(EX_CANTCREAT);
fclose(file);
return;
}
size_t signature = readSize(file);
signatureVersion(signature);
char *buf = NULL;
size_t cap = 0;
while (0 < readString(file, &buf, &cap)) {
struct Window *window = windowFor(idFor(buf));
for (;;) {
time_t time = readTime(file);
if (!time) break;
readString(file, &buf, &cap);
bufferPush(&window->buffer, time, buf);
}
reflow(window);
waddch(window->pad, '\n');
}
free(buf);
fclose(file);
}

202
url.c 100644
View File

@ -0,0 +1,202 @@
/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <err.h>
#include <errno.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "chat.h"
static const char *Pattern = {
"("
"cvs|"
"ftp|"
"git|"
"gopher|"
"http|"
"https|"
"irc|"
"ircs|"
"magnet|"
"sftp|"
"ssh|"
"svn|"
"telnet|"
"vnc"
")"
":([^[:space:]>\"()]|[(][^)]*[)])+"
};
static regex_t Regex;
static void compile(void) {
static bool compiled;
if (compiled) return;
compiled = true;
int error = regcomp(&Regex, Pattern, REG_EXTENDED);
if (!error) return;
char buf[256];
regerror(error, &Regex, buf, sizeof(buf));
errx(EX_SOFTWARE, "regcomp: %s: %s", buf, Pattern);
}
struct URL {
size_t id;
char *nick;
char *url;
};
enum { Cap = 32 };
static struct {
struct URL urls[Cap];
size_t len;
} ring;
static_assert(!(Cap & (Cap - 1)), "Cap is power of two");
static void push(size_t id, const char *nick, const char *str, size_t len) {
struct URL *url = &ring.urls[ring.len++ % Cap];
free(url->nick);
free(url->url);
url->id = id;
url->nick = NULL;
if (nick) {
url->nick = strdup(nick);
if (!url->nick) err(EX_OSERR, "strdup");
}
url->url = strndup(str, len);
if (!url->url) err(EX_OSERR, "strndup");
}
void urlScan(size_t id, const char *nick, const char *mesg) {
if (!mesg) return;
compile();
regmatch_t match = {0};
for (const char *ptr = mesg; *ptr; ptr += match.rm_eo) {
if (regexec(&Regex, ptr, 1, &match, 0)) break;
push(id, nick, &ptr[match.rm_so], match.rm_eo - match.rm_so);
}
}
const char *urlOpenUtil;
static const char *OpenUtils[] = { "open", "xdg-open" };
static void urlOpen(const char *url) {
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
close(STDIN_FILENO);
dup2(procPipe[1], STDOUT_FILENO);
dup2(procPipe[1], STDERR_FILENO);
if (urlOpenUtil) {
execlp(urlOpenUtil, urlOpenUtil, url, NULL);
warn("%s", urlOpenUtil);
_exit(EX_CONFIG);
}
for (size_t i = 0; i < ARRAY_LEN(OpenUtils); ++i) {
execlp(OpenUtils[i], OpenUtils[i], url, NULL);
if (errno != ENOENT) {
warn("%s", OpenUtils[i]);
_exit(EX_CONFIG);
}
}
warnx("no open utility found");
_exit(EX_CONFIG);
}
const char *urlCopyUtil;
static const char *CopyUtils[] = { "pbcopy", "wl-copy", "xclip", "xsel" };
static void urlCopy(const char *url) {
int rw[2];
int error = pipe(rw);
if (error) err(EX_OSERR, "pipe");
ssize_t len = write(rw[1], url, strlen(url));
if (len < 0) err(EX_IOERR, "write");
error = close(rw[1]);
if (error) err(EX_IOERR, "close");
pid_t pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) {
close(rw[0]);
return;
}
dup2(rw[0], STDIN_FILENO);
dup2(procPipe[1], STDOUT_FILENO);
dup2(procPipe[1], STDERR_FILENO);
close(rw[0]);
if (urlCopyUtil) {
execlp(urlCopyUtil, urlCopyUtil, NULL);
warn("%s", urlCopyUtil);
_exit(EX_CONFIG);
}
for (size_t i = 0; i < ARRAY_LEN(CopyUtils); ++i) {
execlp(CopyUtils[i], CopyUtils[i], NULL);
if (errno != ENOENT) {
warn("%s", CopyUtils[i]);
_exit(EX_CONFIG);
}
}
warnx("no copy utility found");
_exit(EX_CONFIG);
}
void urlOpenCount(size_t id, size_t count) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
urlOpen(url->url);
if (!--count) break;
}
}
void urlOpenMatch(size_t id, const char *str) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
if ((url->nick && !strcmp(url->nick, str)) || strstr(url->url, str)) {
urlOpen(url->url);
break;
}
}
}
void urlCopyMatch(size_t id, const char *str) {
for (size_t i = 1; i <= Cap; ++i) {
const struct URL *url = &ring.urls[(ring.len - i) % Cap];
if (!url->url) break;
if (url->id != id) continue;
if (
!str
|| (url->nick && !strcmp(url->nick, str))
|| strstr(url->url, str)
) {
urlCopy(url->url);
break;
}
}
}

134
xdg.c 100644
View File

@ -0,0 +1,134 @@
/* Copyright (C) 2019, 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "chat.h"
FILE *configOpen(const char *path, const char *mode) {
if (path[0] == '/' || path[0] == '.') goto local;
const char *home = getenv("HOME");
const char *configHome = getenv("XDG_CONFIG_HOME");
const char *configDirs = getenv("XDG_CONFIG_DIRS");
char buf[PATH_MAX];
if (configHome) {
snprintf(buf, sizeof(buf), "%s/" XDG_SUBDIR "/%s", configHome, path);
} else {
if (!home) goto local;
snprintf(buf, sizeof(buf), "%s/.config/" XDG_SUBDIR "/%s", home, path);
}
FILE *file = fopen(buf, mode);
if (file) return file;
if (errno != ENOENT) {
warn("%s", buf);
return NULL;
}
if (!configDirs) configDirs = "/etc/xdg";
while (*configDirs) {
size_t len = strcspn(configDirs, ":");
snprintf(
buf, sizeof(buf), "%.*s/" XDG_SUBDIR "/%s",
(int)len, configDirs, path
);
file = fopen(buf, mode);
if (file) return file;
if (errno != ENOENT) {
warn("%s", buf);
return NULL;
}
configDirs += len;
if (*configDirs) configDirs++;
}
local:
file = fopen(path, mode);
if (!file) warn("%s", path);
return file;
}
FILE *dataOpen(const char *path, const char *mode) {
if (path[0] == '/' || path[0] == '.') goto local;
const char *home = getenv("HOME");
const char *dataHome = getenv("XDG_DATA_HOME");
const char *dataDirs = getenv("XDG_DATA_DIRS");
char homePath[PATH_MAX];
if (dataHome) {
snprintf(
homePath, sizeof(homePath),
"%s/" XDG_SUBDIR "/%s", dataHome, path
);
} else {
if (!home) goto local;
snprintf(
homePath, sizeof(homePath),
"%s/.local/share/" XDG_SUBDIR "/%s", home, path
);
}
FILE *file = fopen(homePath, mode);
if (file) return file;
if (errno != ENOENT) {
warn("%s", homePath);
return NULL;
}
char buf[PATH_MAX];
if (!dataDirs) dataDirs = "/usr/local/share:/usr/share";
while (*dataDirs) {
size_t len = strcspn(dataDirs, ":");
snprintf(
buf, sizeof(buf), "%.*s/" XDG_SUBDIR "/%s",
(int)len, dataDirs, path
);
file = fopen(buf, mode);
if (file) return file;
if (errno != ENOENT) {
warn("%s", buf);
return NULL;
}
dataDirs += len;
if (*dataDirs) dataDirs++;
}
if (mode[0] != 'r') {
char *base = strrchr(homePath, '/');
*base = '\0';
int error = mkdir(homePath, S_IRWXU);
if (error && errno != EEXIST) {
warn("%s", homePath);
return NULL;
}
*base = '/';
file = fopen(homePath, mode);
if (!file) warn("%s", homePath);
return file;
}
local:
file = fopen(path, mode);
if (!file) warn("%s", path);
return file;
}