mirror of
https://github.com/netblue30/firejail.git
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108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
/*
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* Copyright (C) 2014-2018 Firejail Authors
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*
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* This file is part of firejail project
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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 2 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <string.h>
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int main(int argc, char **argv) {
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int fd, newfd, client_len;
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struct sockaddr_in serv_addr, client_addr;
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int n, pid;
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if (argc < 2) {
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printf("Usage: ./server port-number\n");
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return 1;
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}
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int portno = atoi(argv[1]);
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// init socket
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fd = socket(AF_INET, SOCK_STREAM, 0);
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if (fd < 0) {
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perror("ERROR opening socket");
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return 1;
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}
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// Initialize socket structure
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memset(&serv_addr, 0, sizeof(serv_addr));
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_addr.s_addr = INADDR_ANY;
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serv_addr.sin_port = htons(portno);
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// bind
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if (bind(fd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
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perror("bind");
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return 1;
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}
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// listen - 5 pending conncections
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if (listen(fd, 5) < 0) {
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perror("listen");
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return 1;
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}
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client_len = sizeof(client_addr);
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while (1) {
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newfd = accept(fd, (struct sockaddr *) &client_addr, &client_len);
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if (newfd < 0) {
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perror("accept");
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return 1;
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}
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/* Create child process */
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pid = fork();
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if (pid < 0) {
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perror("fork");
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return 1;
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}
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if (pid == 0) {
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// child
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close(fd);
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#define MAXBUF 4096
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char buf[MAXBUF];
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memset(buf, 0, MAXBUF);
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int rcv = read(newfd, buf, MAXBUF - 1);
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if (rcv < 0) {
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perror("read");
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exit(1);
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}
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int sent = write(newfd, "response\n", 9);
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if (sent < 9) {
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perror("write");
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return 1;
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}
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exit(0);
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}
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else
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close(newfd);
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}
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return 0;
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}
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