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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 Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <err.h>
#include <fcntl.h>
#include <locale.h>
#include <poll.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sysexits.h>
#include <unistd.h>
#include <wchar.h>
#include "term.h"
int main(void) {
int error;
setlocale(LC_CTYPE, "");
// TODO: Read info from file.
const char *path = "example.sock";
struct Term *term = termAlloc(24, 80);
int server = socket(PF_LOCAL, SOCK_STREAM, 0);
if (server < 0) err(EX_OSERR, "socket");
struct sockaddr_un addr = { .sun_family = AF_LOCAL };
strncpy(addr.sun_path, path, sizeof(addr.sun_path));
error = bind(server, (struct sockaddr *)&addr, SUN_LEN(&addr));
if (error) err(EX_CANTCREAT, "%s", path);
error = listen(server, 0);
if (error) err(EX_OSERR, "listen");
int maxClient = server;
struct pollfd fds[2] = {
{ .events = POLLIN, .fd = STDIN_FILENO },
{ .events = POLLIN, .fd = server },
};
for (;;) {
int nfds = poll(fds, 2, 60 * 1000);
if (nfds < 0) err(EX_IOERR, "poll");
if (!nfds) {
// TODO: Increment idle time in info.
}
if (fds[0].revents) {
char buf[4096];
ssize_t rlen = read(STDIN_FILENO, buf, sizeof(buf));
if (rlen < 0) err(EX_IOERR, "read");
int client = server + 1;
while (client <= maxClient) {
ssize_t wlen = write(client, buf, rlen);
if (wlen == rlen) {
client++;
continue;
}
close(client);
if (client < maxClient) {
int fd = dup(maxClient);
assert(fd == client);
close(maxClient);
}
maxClient--;
}
ssize_t pos = 0;
while (pos < rlen) {
wchar_t ch;
int n = mbtowc(&ch, &buf[pos], rlen - pos);
if (n <= 0) break;
termUpdate(term, ch);
pos += n;
}
}
if (fds[1].revents) {
int client = accept(server, NULL, NULL);
if (client < 0) continue;
fcntl(client, F_SETFL, O_NONBLOCK);
int yes = 1;
error = setsockopt(client, SOL_SOCKET, SO_NOSIGPIPE, &yes, sizeof(yes));
if (error) {
close(client);
continue;
}
error = termSnapshot(term, client);
if (error) {
close(client);
continue;
}
maxClient++;
assert(client == maxClient);
}
}
}
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