testing travis

.travis.yml

@@ -0,0 +1,13 @@
+sudo: required
+
+services:
+  - docker
+
+env:
+  global:
+    - IMAGE_NAME=ci/testing
+    - DOCKERFILE=docker/Dockerfile.testing
+
+script:
+  - docker build -f "$DOCKERFILE" -t "$IMAGE_NAME" .
+  - docker run -it --rm $(IMAGE_NAME)

Makefile

@@ -3,6 +3,13 @@ PROJECT_DIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 DEV_IMAGE      = local/pspy-development:latest
 DEV_DOCKERFILE = $(PROJECT_DIR)/docker/Dockerfile.development
 
+TEST_IMAGE      = local/pspy-testing:latest
+TEST_DOCKERFILE = $(PROJECT_DIR)/docker/Dockerfile.testing
+
+test:
+	docker build -f $(TEST_DOCKERFILE) -t $(TEST_IMAGE) . 
+	docker run -it --rm $(TEST_IMAGE)
+
 dev-build:
 	docker build -f $(DEV_DOCKERFILE) -t $(DEV_IMAGE) .
 

docker/Dockerfile.testing

@@ -0,0 +1,35 @@
+FROM golang:1.10-stretch
+
+RUN apt-get update && apt-get -y install cron python3 sudo procps
+
+### Test and build ###
+# copy source code
+COPY main.go /go/src/github.com/dominicbreuker/pspy/main.go
+COPY cmd /go/src/github.com/dominicbreuker/pspy/cmd
+COPY internal /go/src/github.com/dominicbreuker/pspy/internal
+COPY vendor /go/src/github.com/dominicbreuker/pspy/vendor
+
+# run tests
+WORKDIR /go/src/github.com/dominicbreuker/pspy
+RUN go test ./...
+# build executable
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -ldflags '-extldflags "-static"' -o bin/pspy main.go
+
+### Prepare integration test ###
+# install root cronjob
+COPY docker/var/spool/cron/crontabs /var/spool/cron/crontabs
+RUN chmod 600 /var/spool/cron/crontabs/root
+COPY docker/root/scripts /root/scripts
+
+# set up unpriviledged user
+# allows passwordless sudo to start cron as root on startup
+RUN useradd -ms /bin/bash myuser && \
+    adduser myuser sudo && \
+    echo 'myuser ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+USER myuser
+
+
+# drop into bash shell
+COPY docker/entrypoint-testing.sh /entrypoint.sh
+RUN sudo chmod +x /entrypoint.sh
+CMD ["/entrypoint.sh"]

docker/entrypoint-testing.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+sudo cron -f &
+sleep 1
+sudo ps | grep cron 1>/dev/null
+echo "[+] cron started"
+
+echo "[+] Running as user `id`"
+
+echo "[+] Executing test"
+# exec /bin/bash
+rm /home/myuser/log.txt
+bin/pspy > /home/myuser/log.txt &
+
+for i in `seq 1 25`; do
+    echo "Waiting for cron job detection..."
+    sleep 5;
+
+    QUERY_RESULT=$(grep ' | passwd myuser' /home/myuser/log.txt | grep -v grep)
+    if [ "'$QUERY_RESULT'" != "''"  ]; then
+        echo "Cron job execution detected!"
+        echo "Complete log of pspy (may contain commands run in this test):"
+        cat /home/myuser/log.txt
+        exit 0
+    fi
+done
+echo "Failed to detect cron job..."
+exit 1

internal/psscanner/proclist.go

@@ -42,19 +42,6 @@ func (pl procList) refresh(eventCh chan string) error {
 	return nil
 }
 
-func (pl procList) addPid(pid int, eventCh chan string) {
-	cmd, err := getCmd(pid)
-	if err != nil {
-		cmd = "???" // process probably terminated
-	}
-	uid, err := getUID(pid)
-	if err != nil {
-		uid = "???"
-	}
-	eventCh <- fmt.Sprintf("UID=%-4s PID=%-6d | %s", uid, pid, cmd)
-	pl[pid] = cmd
-}
-
 func getPIDs() ([]int, error) {
 	proc, err := procDirReader()
 	if err != nil {
@@ -87,6 +74,19 @@ func file2Pid(f os.FileInfo) (int, error) {
 	return pid, nil
 }
 
+func (pl procList) addPid(pid int, eventCh chan string) {
+	cmd, err := getCmd(pid)
+	if err != nil {
+		cmd = "???" // process probably terminated
+	}
+	uid, err := getUID(pid)
+	if err != nil {
+		uid = "???"
+	}
+	eventCh <- fmt.Sprintf("UID=%-4s PID=%-6d | %s", uid, pid, cmd)
+	pl[pid] = cmd
+}
+
 func getCmd(pid int) (string, error) {
 	cmd, err := cmdLineReader(pid)
 	if err != nil {