X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;ds=sidebyside;f=test%2Fblackbox%2Fcommon%2Ftcpdump.c;fp=test%2Fblackbox%2Fcommon%2Ftcpdump.c;h=a0933f73092c3e9716c0319b3cbff78811c6f58f;hb=dc68da94af8fca91748579c84ef5ed798db7efab;hp=0000000000000000000000000000000000000000;hpb=1a7277c64d74ae5ae18c48ebe09a522ffe7c696b;p=meshlink

diff --git a/test/blackbox/common/tcpdump.c b/test/blackbox/common/tcpdump.c
new file mode 100644
index 00000000..a0933f73
--- /dev/null
+++ b/test/blackbox/common/tcpdump.c
@@ -0,0 +1,60 @@
+/*
+    tcpdump.c -- Implementation of Black Box Test Execution for meshlink
+
+    Copyright (C) 2018  Guus Sliepen <guus@meshlink.io>
+
+    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 <unistd.h>
+#include <sys/prctl.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/types.h>
+#include "common_handlers.h"
+#include "tcpdump.h"
+
+pid_t tcpdump_start(char *interface) {
+	pid_t tcpdump_pid;
+	char *argv[] = { "tcpdump", "-i", interface, NULL };
+	// child process have a pipe to the parent process when parent process terminates SIGPIPE kills the tcpdump
+	int pipes[2];
+	pipe(pipes);
+	PRINT_TEST_CASE_MSG("\x1b[32mLaunching TCP Dump ..\x1b[0m\n");
+
+	if((tcpdump_pid = fork()) == 0) {
+		prctl(PR_SET_PDEATHSIG, SIGHUP);
+		close(pipes[1]);
+		// Open log file for TCP Dump
+		int fd = open(TCPDUMP_LOG_FILE, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+		assert(fd != -1);
+		close(STDOUT_FILENO);
+		assert(dup2(fd, STDOUT_FILENO) != -1);
+
+		// Launch TCPDump with port numbers of sleepy, gateway & relay
+		int ret = execvp("/usr/sbin/tcpdump", argv);
+		perror("execvp ");
+		assert(ret != -1);
+	} else {
+		close(pipes[0]);
+		return tcpdump_pid;
+	}
+}
+
+void tcpdump_stop(pid_t tcpdump_pid) {
+	PRINT_TEST_CASE_MSG("\n\x1b[32mStopping TCP Dump.\x1b[0m\n");
+	assert(!kill(tcpdump_pid, SIGTERM));
+}