From ead4ec3089b97eda1b438da248caf76f169345ad Mon Sep 17 00:00:00 2001
From: netblue30 <netblue30@yahoo.com>
Date: Sat, 18 Nov 2017 08:39:02 -0500
Subject: netfilter template support

---
 test/network/tcpserver.c | 108 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 test/network/tcpserver.c

(limited to 'test/network/tcpserver.c')

diff --git a/test/network/tcpserver.c b/test/network/tcpserver.c
new file mode 100644
index 000000000..b2395a4ad
--- /dev/null
+++ b/test/network/tcpserver.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2014-2017 Firejail Authors
+ *
+ * This file is part of firejail project
+ *
+ * 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 2 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <string.h>
+
+
+int main(int argc, char **argv) {
+	int fd, newfd, client_len;
+	struct sockaddr_in serv_addr, client_addr;
+	int n, pid;
+
+	if (argc < 2) {
+		printf("Usage: ./server port-number\n");
+		return 1;
+	}
+	int portno = atoi(argv[1]);
+	
+	// init socket
+	fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (fd < 0) {
+		perror("ERROR opening socket");
+		return 1;
+	}
+
+	// Initialize socket structure
+	memset(&serv_addr, 0, sizeof(serv_addr));
+
+	serv_addr.sin_family = AF_INET;
+	serv_addr.sin_addr.s_addr = INADDR_ANY;
+	serv_addr.sin_port = htons(portno);
+
+	// bind
+	if (bind(fd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
+		perror("bind");
+		return 1;
+	}
+
+	// listen - 5 pending conncections
+	if (listen(fd, 5) < 0) {
+		perror("listen");
+		return 1;
+	}
+	client_len = sizeof(client_addr);
+
+	while (1) {
+		newfd = accept(fd, (struct sockaddr *) &client_addr, &client_len);
+
+		if (newfd < 0) {
+			perror("accept");
+			return 1;
+		}
+
+		/* Create child process */
+		pid = fork();
+
+		if (pid < 0) {
+			perror("fork");
+			return 1;
+		}
+
+		if (pid == 0) {
+			// child
+			close(fd);
+#define MAXBUF 4096			
+			char buf[MAXBUF];
+			memset(buf, 0, MAXBUF);
+
+			int rcv = read(newfd, buf, MAXBUF - 1);
+			if (rcv < 0) {
+				perror("read");
+				exit(1);
+			}
+
+			int sent = write(newfd, "response\n", 9);
+			if (sent < 9) {
+				perror("write");
+				return 1;
+			}
+
+			exit(0);
+		}
+		else
+			close(newfd);
+	}
+	
+	return 0;
+}
-- 
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