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85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* Copyright (C) 2018 - David Oberhollenzer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include "util.h"
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int mksock(const char *path, int flags)
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{
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struct sockaddr_un un;
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const char *errmsg;
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int fd, type;
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type = (flags & SOCK_FLAG_DGRAM) ? SOCK_DGRAM : SOCK_STREAM;
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fd = socket(AF_UNIX, type | SOCK_CLOEXEC, 0);
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if (fd < 0) {
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perror("socket");
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return -1;
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}
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memset(&un, 0, sizeof(un));
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un.sun_family = AF_UNIX;
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strcpy(un.sun_path, path);
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if (bind(fd, (struct sockaddr *)&un, sizeof(un))) {
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errmsg ="bind";
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goto fail_errno;
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}
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if (flags & SOCK_FLAG_ROOT_ONLY) {
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if (chown(path, 0, 0)) {
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errmsg = "chown";
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goto fail_errno;
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}
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if (chmod(path, 0770)) {
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errmsg = "chmod";
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goto fail_errno;
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}
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} else if (flags & SOCK_FLAG_EVERYONE) {
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if (chmod(path, 0777)) {
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errmsg = "chmod";
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goto fail_errno;
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}
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}
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if (!(flags & SOCK_FLAG_DGRAM)) {
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if (listen(fd, 10)) {
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errmsg = "listen";
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goto fail_errno;
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}
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}
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return fd;
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fail_errno:
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fprintf(stderr, "%s: %s: %s\n", path, errmsg, strerror(errno));
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close(fd);
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unlink(path);
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return -1;
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}
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