Strace support for diff tests.

* tiny README update

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

README.md

@@ -3,7 +3,8 @@
 
 # Disclaimer
 
-Please protect the privacy of others.
+Please respect&protect the privacy of others.
+
 The purpose of this software is not to spy on others, but to detect network anomalies and malicious traffic.
 
 # Abstract
@@ -46,7 +47,7 @@ where:
 * `nDPIsrvd`:
 
     * create and manage an "incoming" UNIX-socket (ref [1] above), to fetch data from a local `nDPId`;
-    * apply a filtering logic to received data to select "flow_event_id" related JSONs;
+    * apply a buffering logic to received data;
     * create and manage an "outgoing" UNIX or TCP socket (ref [2] above) to relay matched events
       to connected clients
 

test/run_tests.sh

@@ -3,6 +3,7 @@
 set -e
 
 LINE_SPACES=${LINE_SPACES:-48}
+STRACE_EXEC="${STRACE_EXEC}"
 MYDIR="$(realpath "$(dirname ${0})")"
 nDPId_test_EXEC="$(realpath "${2:-"${MYDIR}/../nDPId-test"}")"
 NETCAT_EXEC="$(which nc) -q 0 -l 127.0.0.1 9000"
@@ -111,7 +112,12 @@ for pcap_file in *.pcap *.pcapng *.cap; do
 
     printf "%-${LINE_SPACES}s\t" "${pcap_file}"
 
-    ${nDPId_test_EXEC} "${pcap_file}" \
+    if [ ! -z "${STRACE_EXEC}" ]; then
+        STRACE_CMD="${STRACE_EXEC} -f -e decode-fds=path,socket,dev,pidfd -s 1024 -o /tmp/nDPId-test-stderr/${pcap_file}.strace.out"
+    else
+        STRACE_CMD=""
+    fi
+    ${STRACE_CMD} ${nDPId_test_EXEC} "${pcap_file}" \
         >"/tmp/nDPId-test-stdout/${pcap_file}.out.new" \
         2>>"/tmp/nDPId-test-stderr/${pcap_file}.out"
     nDPId_test_RETVAL=$?