Initial commit for assignment 2

README.md

@@ -8,4 +8,5 @@
 
 ### Contents
 
-* [Assignment 1: Firewall Rules](./firewall-rules)
+* [Assignment 1: Firewall Rules](./firewall-rules)
+* [Assignment 2: Firewall Server](./firewall-server)

firewall-server/Makefile

@@ -0,0 +1,21 @@
+CFLAGS = -Wall -Werror -g -fdiagnostics-color=always
+
+.PHONY: all clean
+
+all: server client
+
+server: server.o
+	$(CC) $(CFLAGS) -o server server.o -lpthread
+
+server.o: server.c
+	$(CC) $(CFLAGS) -c server.c
+
+
+client: client.o
+	$(CC) $(CFLAGS)  -o client client.o
+
+client.o: client.c
+	$(CC) $(CFLAGS) -c client.c
+
+clean:
+	rm -f *.o server client

firewall-server/README.md

@@ -0,0 +1,8 @@
+# Firewall Server
+
+*Create a simple server for operating on firewall rules*
+
+---
+
+* [Problem statement](./ex2.pdf)
+* Formative

firewall-server/client.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main (int argc, char **argv) {
+    // Client to be written
+    return 0;
+}

firewall-server/server.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main (int argc, char **argv) {
+    // Server to be written
+    return 0;
+}

firewall-server/test.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+#globals
+ret=0
+server="server"
+client="client"
+serverOut=testServerOutput.txt
+clientOut=testClientOutput.txt
+successFile=testSuccess.txt
+IPADDRESS=localhost
+PORT=2200
+
+# --- helper function ---
+function run(){
+	echo -e "$1:"
+	$1 #execute
+	#check errors
+	tmp=$?
+	if [ $tmp -ne 0 ]; then
+		ret=$tmp
+	fi
+	echo "" #newline
+	return $tmp
+}
+
+function checkConnection() {
+    sleep 0.1
+    case `netstat -a -n -p 2>/dev/null| grep $PORT `  in
+	*":::2200"*)
+	    return 1;;
+    esac
+    sleep 0.2
+    case `netstat -a -n -p 2>/dev/null| grep $PORT`  in
+	*":::2200"*)
+	    return 1;;
+    esac
+    sleep 0.2
+    case `netstat -a -n -p 2>/dev/null| grep $PORT`  in
+	*":::2200"*)
+	    return 1;;
+    esac
+    sleep 0.2
+    case `netstat -a -n -p 2>/dev/null| grep $PORT`  in
+	*":::2200"*)
+	    return 1;;
+    esac
+    sleep 0.2
+    case `netstat -a -n -p 2>/dev/null| grep $PORT`  in
+	*":::2200"*)
+	    return 1;;
+    esac
+    return 0
+}
+
+# --- TESTCASES ---
+function basic_testcase(){
+    t="testcase 1"
+
+    #cleanup
+    rm -f $serverOut
+    rm -f $clientOut
+    rm -f $successFile
+    echo "Rule added" > $successFile
+    killall $server > /dev/null 2> /dev/null
+
+    # start server
+    echo -en "starting server: \t"
+    ./$server $PORT > $serverOut  2>&1 &
+    checkConnection
+    if [ $? -ne 1 ]
+    then
+	echo -e "ERROR: could not start server"
+	return -1
+    else
+	echo "OK"
+    fi
+
+    # start client
+    command="A 147.188.192.41 443"
+    echo -en "executing client: \t"
+    ./$client $IPADDRESS $PORT $command > $clientOut 2>/dev/null
+    if [ $? -ne 0 ]
+    then
+	echo -e "Error: Could not execute client"
+	killall $server > /dev/null 2> /dev/null
+	return -1
+    else
+	echo "OK"
+    fi
+    killall $server > /dev/null 2> /dev/null
+    if [ ! -r $clientOut ]
+    then
+	echo "Error: Client produced no output"
+	return -1
+    fi
+    
+    echo -en "server result:     \t"
+    res=`diff $clientOut $successFile 2>&1`
+    if [ " $res" != " " ]
+    then
+	echo "Error: Server returned invalid result"
+	return -1
+    else
+	echo "OK"
+    fi
+    return 0
+}
+
+# --- execution ---
+#reset
+rmmod $executable 2>/dev/null
+
+run basic_testcase
+#cleanup
+if [ $ret != 0 ]
+then
+    echo Basic test failed
+else
+    echo Basic test succeeded
+fi
+exit $ret
+