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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 <locale.h>
#include <poll.h>
#include <signal.h>
#include <stdbool.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 };
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 = "!a:c:eh:j:k:n:p:r:u:vw:";
const struct option LongOpts[] = {
{ "insecure", no_argument, NULL, '!' },
{ "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' },
{ "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 '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 '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) err(EX_NOINPUT, "%s", cert);
}
if (priv) {
privFile = configOpen(priv, "r");
if (!privFile) err(EX_NOINPUT, "%s", priv);
}
ircConfig(insecure, certFile, privFile);
if (certFile) fclose(certFile);
if (privFile) fclose(privFile);
uiInit();
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");
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]) {
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))
);
}
}
}
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");
}
uiHide();
}
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