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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* 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 <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include "util.h"
int mksock(const char *path, int flags)
{
struct sockaddr_un un;
const char *errmsg;
int fd, type;
type = (flags & SOCK_FLAG_DGRAM) ? SOCK_DGRAM : SOCK_STREAM;
fd = socket(AF_UNIX, type | SOCK_CLOEXEC, 0);
if (fd < 0) {
perror("socket");
return -1;
}
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
strcpy(un.sun_path, path);
if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
errmsg ="bind";
goto fail_errno;
}
if (flags & SOCK_FLAG_ROOT_ONLY) {
if (chown(path, 0, 0)) {
errmsg = "chown";
goto fail_errno;
}
if (chmod(path, 0770)) {
errmsg = "chmod";
goto fail_errno;
}
} else if (flags & SOCK_FLAG_EVERYONE) {
if (chmod(path, 0777)) {
errmsg = "chmod";
goto fail_errno;
}
}
if (!(flags & SOCK_FLAG_DGRAM)) {
if (listen(fd, 10)) {
errmsg = "listen";
goto fail_errno;
}
}
return fd;
fail_errno:
fprintf(stderr, "%s: %s: %s\n", path, errmsg, strerror(errno));
close(fd);
unlink(path);
return -1;
}
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