test target: launch user sshd for opening termflounder_5.99.6flounder_5.99.5flounder/5.99.6flounder/5.99.55.99.65.99.5

- fixtures for user ssh server (authorized_keys, ssh, sshd_config,
ssh_host_rsa_key, ssh.pub)
- exec following cmd
$ /usr/bin/sshd
    - D
    -f sshd_config
    -h ssh_host_rsa_key
    -o AuthorizedKeysFile=authorized_keys
    -p port
- uncomment former terminal tests for open/close

Change-Id: If1765c4860ef3a95f7a92f1f9652427828b98083
Signed-off-by: Clément Bénier <clement.benier@iot.bzh>

1 files changed, 180 insertions, 83 deletions

diff --git a/test/target_test.go b/test/target_test.go
index e89011b..d7576c6 100644
--- a/test/target_test.go
+++ b/test/target_test.go
@@ -17,23 +17,128 @@
 package xdsservertest
 
 import (
+	"bytes"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"regexp"
 	"strconv"
 	"strings"
 	"testing"
 	"time"
 
+	common "gerrit.automotivelinux.org/gerrit/src/xds/xds-common.git/golib"
 	"gerrit.automotivelinux.org/gerrit/src/xds/xds-server/lib/xsapiv1"
 	"github.com/stretchr/testify/assert"
 )
 
-/*flush channel with timeout*/
-func flushChannelTerm(channel chan xsapiv1.TerminalOutMsg, ms time.Duration) {
-	timeoutB := false
-	for !timeoutB {
+func launchSSHd(sshDir string, proc **os.Process, sshdCmd string) (*os.File, string) {
+	port := "22222"
+	argsProcessSSHd := []string{
+		sshdCmd,
+		"-f",
+		sshDir + "/sshd_config",
+		"-D",
+		"-h",
+		sshDir + "/ssh_host_rsa_key",
+		"-o",
+		"AuthorizedKeysFile=" + sshDir + "/authorized_keys",
+		"-p",
+		port,
+	}
+	logFile := logDir + logFileSSHd
+	file, err := os.OpenFile(logFile, os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+	tmpProc, err := os.StartProcess(argsProcessSSHd[0], argsProcessSSHd, &os.ProcAttr{
+		Files: []*os.File{os.Stdin, file, file},
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	*proc = tmpProc
+	return file, port
+}
+
+func InitSSH(t *testing.T, procSSHd **os.Process) (string, string) {
+	Debug(t, "Initialise ssh with local user")
+	sshDir := path.Join(os.Getenv(envRootCfgDir), "ssh")
+	cmd := exec.Command("cp", "-r", sshFixturesDir, sshDir)
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	assert.Nil(t, cmd.Run())
+
+	cmd = exec.Command("ls", sshDir)
+	cmd.Stdout = &out
+	assert.Nil(t, cmd.Run())
+
+	files := strings.Split(fmt.Sprint(cmd.Stdout), "\n")
+
+	for _, f := range files {
+		if f != "" {
+			file := sshDir + "/" + f
+			cmd = exec.Command("chmod", "600", file)
+			cmd.Stdout = &out
+			assert.Nil(t, cmd.Run())
+		}
+	}
+
+	var outSSHd bytes.Buffer
+	var sshdCmd string
+	cmd = exec.Command("which", "sshd")
+	cmd.Stdout = &outSSHd
+	if cmd.Run() != nil {
+		if common.Exists("/usr/sbin/sshd") {
+			sshdCmd = "/usr/sbin/sshd"
+		} else if common.Exists("/usr/bin/sshd") {
+			sshdCmd = "/usr/sbin/sshd"
+		} else {
+			assert.FailNow(t, "Cannot find sshd command, please install it or set in your PATH")
+		}
+	} else {
+		sshdCmd = strings.TrimSpace(fmt.Sprint(cmd.Stdout))
+	}
+
+	var port string
+	_, port = launchSSHd(sshDir, procSSHd, sshdCmd)
+	go func(p *os.Process) {
+		Debug(t, "sshd is launching")
+		if status, err := p.Wait(); err != nil {
+			log.Fatalf("status=%v\n err=%v\n", status, err)
+		}
+	}(*procSSHd)
+	return sshDir, port
+}
+
+/*wait for terminal prompt*/
+func waitForPrompt(t *testing.T, channel chan xsapiv1.TerminalOutMsg, prompt string) string {
+	step := 1 * time.Millisecond
+	timeout := 10 * time.Second
+	current := 0 * time.Second
+	out := ""
+	re := regexp.MustCompile("^" + prompt)
+
+	for {
 		select {
-		case <-channel:
-		case <-time.After(ms * time.Millisecond):
-			timeoutB = true
+		case outMsg := <-channel:
+			out += string(outMsg.Stdout)
+			if string(outMsg.Stderr) != "" {
+				out += string(outMsg.Stderr)
+			}
+			for _, line := range strings.Split(out, "\n") {
+				if re.MatchString(line) {
+					return line
+				}
+			}
+		case <-time.After(step):
+			current = current + step
+			if current >= timeout {
+				assert.FailNow(t, "Never received prompt message from terminal (output:"+out+")")
+			}
 		}
 	}
 }
@@ -122,13 +227,21 @@ func AddTargets(t *testing.T, nbTargets int, chTarget chan xsapiv1.TargetConfig)
 	return listID
 }
 
-func AddTerms(t *testing.T, nbTerms int, listID []string, chTermEvt chan xsapiv1.TerminalConfig) {
+func AddTerms(t *testing.T, nbTerms int, listID []string, chTermEvt chan xsapiv1.TerminalConfig, sshDir string, port string) {
 	for j := 0; j < len(listID); j++ {
 		listTermsID := make([]string, nbTerms)
 		for i := 0; i < nbTerms; i++ {
 			term := xsapiv1.TerminalConfig{
 				Name: "terminal" + strconv.Itoa(i),
 				Type: xsapiv1.TypeTermSSH,
+				Options: []string{
+					"-p",
+					port,
+					"-i",
+					sshDir + "/ssh",
+					"-o",
+					"StrictHostKeyChecking=no",
+				},
 			}
 			/*add terminal on target*/
 			assert.Nil(t, HTTPCli.Post("/targets/"+listID[j]+"/terminals", term, &term))
@@ -146,7 +259,8 @@ func AddTerms(t *testing.T, nbTerms int, listID []string, chTermEvt chan xsapiv1
 	}
 }
 
-func PostTerms(t *testing.T, post string, chTermEvt chan xsapiv1.TerminalConfig) {
+func PostTerms(t *testing.T, post string, chTermEvt chan xsapiv1.TerminalConfig, chTerm chan xsapiv1.TerminalOutMsg,
+	prompt string) {
 	var status string
 	switch post {
 	case "open":
@@ -166,6 +280,11 @@ func PostTerms(t *testing.T, post string, chTermEvt chan xsapiv1.TerminalConfig)
 			assert.Nil(t, HTTPCli.Post("/targets/"+targets[i].ID+"/terminals/"+terms[j].ID+"/"+post, terms[j], &term))
 			Debugf(t, "%v terminal %v", post, term.Name)
 			termEvt := <-chTermEvt //waiting for event terminalStateChange
+			if post == "open" {
+				data := []byte("PS1=" + prompt + " bash -norc\n")
+				assert.Nil(t, sCli.Conn.Emit(xsapiv1.TerminalInEvent, data))
+				waitForPrompt(t, chTerm, prompt)
+			}
 			assert.Equal(t, term.ID, termEvt.ID)
 			assert.Equal(t, term.Status, status)
 			assert.Equal(t, termEvt.Status, status)
@@ -203,8 +322,13 @@ func RemoveTermsTargets(t *testing.T, chTarget chan xsapiv1.TargetConfig, chTerm
 	}
 }
 func TestTarget(t *testing.T) {
-	nbTargets := 3
-	nbTermsByTarget := 3
+	prompt := "--PROMPT--"
+	var procSSHd *os.Process
+	sshDir, port := InitSSH(t, &procSSHd)
+	defer procSSHd.Kill()
+
+	nbTargets := 2
+	nbTermsByTarget := 2
 	/*channel for target events*/
 	chTarget := make(chan xsapiv1.TargetConfig)
 	defer close(chTarget)
@@ -221,78 +345,51 @@ func TestTarget(t *testing.T) {
 	assert.Equal(t, len(targetArray), 0)
 
 	listID := AddTargets(t, nbTargets, chTarget)
-	AddTerms(t, nbTermsByTarget, listID, chTermEvt)
-
-	///*channel for TerminalOutMsg*/
-	//chTerm := make(chan xsapiv1.TerminalOutMsg)
-	//defer close(chTerm)
-
-	///*connect on terminalOutMsg event*/
-	//sCli.Conn.On(xsapiv1.TerminalOutEvent, func(ev xsapiv1.TerminalOutMsg) {
-	//	chTerm <- ev
-	//})
-
-	///*just for the first term*/
-	//var terms []xsapiv1.TerminalConfig
-	//var term xsapiv1.TerminalConfig
-	//assert.Nil(t, HTTPCli.Get("/targets/"+listID[0]+"/terminals", &terms))
-	//assert.Nil(t, HTTPCli.Post("/targets/"+listID[0]+"/terminals/"+terms[0].ID+"/open", terms[0], &term))
-	//<-chTermEvt                  //waiting for event terminalStateChange
-	//termOut := <-chTerm          //waiting for terminalOutMsg
-	//flushChannelTerm(chTerm, 50) //flushing all terminalOutMsg
-	//stdoutMsg := string(termOut.Stdout)
-	//if strings.Contains(stdoutMsg, "Connection refused") {
-	//	t.Fatalf("%vYou may have to launch ssh server", stdoutMsg)
-	//} else if strings.Contains(stdoutMsg, "password") {
-	//	t.Fatalf("%vcopy your pub key in authorized_keys\ncat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys", stdoutMsg)
-	//}
-	//assert.True(t, strings.Contains(stdoutMsg, "Last login")) //first terminal msg should be Last Login
-	//assert.Nil(t, HTTPCli.Post("/targets/"+listID[0]+"/terminals/"+terms[0].ID+"/close", terms[0], &term))
-	//<-chTermEvt //waiting for event terminalStateChange
-
-	///*open terminals*/
-	//PostTerms(t, "open", chTermEvt)
-	//termOut = <-chTerm           //waiting for terminalOutMsg
-	//flushChannelTerm(chTerm, 50) //flushing all terminalOutMsg
-	//stdoutMsg = string(termOut.Stdout)
-	//if strings.Contains(stdoutMsg, "Connection refused") {
-	//	t.Fatalf("%vYou may have to launch ssh server", stdoutMsg)
-	//} else if strings.Contains(stdoutMsg, "password") {
-	//	t.Fatalf("%vcopy your pub key in authorized_keys\ncat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys", stdoutMsg)
-	//}
-	//assert.True(t, strings.Contains(stdoutMsg, "Last login")) //first terminal msg should be Last Login
-
-	///*create toto file through terminals*/
-	//rootCfgDir := os.Getenv(envRootCfgDir)
-	//totoFile := path.Join(rootCfgDir, "toto")
-
-	///*test with 2 terminals*/
-	//for i := 0; i < 2; i++ {
-	//	totoFileCurrent := totoFile + strconv.Itoa(i)
-	//	/*send cmd though term*/
-	//	data := []byte("echo helloWorld" + strconv.Itoa(i) + " >> " + totoFileCurrent + "\n")
-	//	Debugf(t, "send following command through terminal: %v", string(data))
-	//	assert.Nil(t, sCli.Conn.Emit(xsapiv1.TerminalInEvent, data))
-	//	flushChannelTerm(chTerm, 50) //waiting for terminal msg
-
-	//	/*check that toto file is created*/
-	//	_, err := os.Stat(totoFileCurrent)
-	//	assert.Nil(t, err)
-
-	//	/*send cmd though term*/
-	//	data = []byte("cat " + totoFileCurrent + "\n")
-	//	Debugf(t, "send following command through terminal: %v", string(data))
-	//	assert.Nil(t, sCli.Conn.Emit(xsapiv1.TerminalInEvent, data))
-
-	//	<-chTerm                     //cmd sent
-	//	termOut = <-chTerm           //result of cat cmd
-	//	flushChannelTerm(chTerm, 50) //flushing what remains
-	//	/*check that terminal msg is what was written before*/
-	//	assert.Equal(t, string(termOut.Stdout), "helloWorld"+strconv.Itoa(i)+"\r\n")
-	//	Debugf(t, "check terminal output msg: %v", string(termOut.Stdout))
-	//}
-
-	//PostTerms(t, "close", chTermEvt)
+	AddTerms(t, nbTermsByTarget, listID, chTermEvt, sshDir, port)
+
+	/*channel for TerminalOutMsg*/
+	chTerm := make(chan xsapiv1.TerminalOutMsg)
+	defer close(chTerm)
+
+	/*connect on terminalOutMsg event*/
+	sCli.Conn.On(xsapiv1.TerminalOutEvent, func(ev xsapiv1.TerminalOutMsg) {
+		chTerm <- ev
+	})
+
+	/*open terminals*/
+	PostTerms(t, "open", chTermEvt, chTerm, prompt)
+
+	/*create toto file through terminals*/
+	rootCfgDir := os.Getenv(envRootCfgDir)
+	totoFile := path.Join(rootCfgDir, "toto")
+
+	/*test with 2 terminals*/
+	for i := 0; i < 2; i++ {
+		totoFileCurrent := totoFile + strconv.Itoa(i)
+		/*send cmd though term*/
+		data := []byte("echo helloWorld" + strconv.Itoa(i) + " >> " + totoFileCurrent + "\n")
+		Debugf(t, "send following command through terminal: %v", string(data))
+		assert.Nil(t, sCli.Conn.Emit(xsapiv1.TerminalInEvent, data))
+		waitForPrompt(t, chTerm, prompt) //waiting for terminal prompt
+
+		/*check that toto file is created*/
+		_, err := os.Stat(totoFileCurrent)
+		assert.Nil(t, err)
+
+		/*send cmd though term*/
+		data = []byte("cat " + totoFileCurrent + "\n")
+		Debugf(t, "send following command through terminal: %v", string(data))
+		assert.Nil(t, sCli.Conn.Emit(xsapiv1.TerminalInEvent, data))
+
+		<-chTerm                         //cmd sent
+		termOut := <-chTerm              //result of cat cmd
+		waitForPrompt(t, chTerm, prompt) //wait for terminal prompt
+		/*check that terminal msg is what was written before*/
+		assert.Equal(t, string(termOut.Stdout), "helloWorld"+strconv.Itoa(i)+"\r\n")
+		Debugf(t, "check terminal output msg: %v", string(termOut.Stdout))
+	}
+
+	PostTerms(t, "close", chTermEvt, nil, prompt)
 
 	/*remove targets and terms*/
 	RemoveTermsTargets(t, chTarget, chTermEvt)