Backend render html

api.go

@@ -3,8 +3,10 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"html/template"
 	"log"
 	"net/http"
+	"os"
 	"strings"
 	"time"
 
@@ -62,30 +64,32 @@ type EmailSender interface {
 
 // APIResponse wraps all the responses from this API.
 type APIResponse struct {
-	StatusCode int         `json:"status_code"`
-	Message    string      `json:"message"`
-	Response   interface{} `json:"response"`
+	StatusCode   int         `json:"status_code"`
+	Message      string      `json:"message"`
+	Response     interface{} `json:"response"`
+	TemplatePath string      `json:"-"`
 }
 
 type apiHandler func(r *http.Request) APIResponse
 
 func apiWrapper(api apiHandler) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		response := api(r)
-		if response.StatusCode != http.StatusOK {
-			http.Error(w, response.Message, response.StatusCode)
-		}
 		if response.StatusCode == http.StatusInternalServerError {
 			packet := raven.NewPacket(response.Message, raven.NewHttp(r))
 			raven.Capture(packet, nil)
 		}
-		writeJSON(w, response)
+		if strings.Contains(r.Header.Get("accept"), "text/html") {
+			writeHTML(w, response)
+		} else {
+			writeJSON(w, response)
+		}
 	}
 }
 
 // Checks the policy status of this domain.
 func (api API) policyCheck(domain string) *checker.Result {
-	result := checker.Result{Name: "policylist"}
+	result := checker.Result{Name: checker.PolicyList}
 	if _, err := api.List.Get(domain); err == nil {
 		return result.Success()
 	}
@@ -153,16 +157,20 @@ func (api API) Scan(r *http.Request) APIResponse {
 		scan, err := api.Database.GetLatestScan(domain)
 		if err == nil && scan.Version == models.ScanVersion &&
 			time.Now().Before(scan.Timestamp.Add(cacheScanTime)) {
-			return APIResponse{StatusCode: http.StatusOK, Response: scan}
+			return APIResponse{
+				StatusCode:   http.StatusOK,
+				Response:     scan,
+				TemplatePath: "views/scan.html.tmpl",
+			}
 		}
 		// 1. Conduct scan via starttls-checker
-		rawScandata, err := api.CheckDomain(api, domain)
+		scanData, err := api.CheckDomain(api, domain)
 		if err != nil {
 			return APIResponse{StatusCode: http.StatusInternalServerError, Message: err.Error()}
 		}
 		scan = models.Scan{
 			Domain:    domain,
-			Data:      rawScandata,
+			Data:      scanData,
 			Timestamp: time.Now(),
 			Version:   models.ScanVersion,
 		}
@@ -171,7 +179,11 @@ func (api API) Scan(r *http.Request) APIResponse {
 		if err != nil {
 			return APIResponse{StatusCode: http.StatusInternalServerError, Message: err.Error()}
 		}
-		return APIResponse{StatusCode: http.StatusOK, Response: scan}
+		return APIResponse{
+			StatusCode:   http.StatusOK,
+			Response:     scan,
+			TemplatePath: "views/scan.html.tmpl",
+		}
 		// GET: Just fetch the most recent scan
 	} else if r.Method == http.MethodGet {
 		scan, err := api.Database.GetLatestScan(domain)
@@ -278,14 +290,23 @@ func (api API) Queue(r *http.Request) APIResponse {
 			return APIResponse{StatusCode: http.StatusInternalServerError,
 				Message: "Unable to send validation e-mail"}
 		}
-		return APIResponse{StatusCode: http.StatusOK, Response: domainData}
+		// domainData.State = Unvalidated
+		// or queued?
+		return APIResponse{
+			StatusCode: http.StatusOK,
+			Response:   fmt.Sprintf("Thank you for submitting your domain. Please check postmaster@%s to validate that you control the domain.", domain),
+		}
 		// GET: Retrieve domain status from queue
+		// JSON only
 	} else if r.Method == http.MethodGet {
 		status, err := api.Database.GetDomain(domain)
 		if err != nil {
 			return APIResponse{StatusCode: http.StatusNotFound, Message: err.Error()}
 		}
-		return APIResponse{StatusCode: http.StatusOK, Response: status}
+		return APIResponse{
+			StatusCode: http.StatusOK,
+			Response:   status,
+		}
 	} else {
 		return APIResponse{StatusCode: http.StatusMethodNotAllowed,
 			Message: "/api/queue only accepts POST and GET requests"}
@@ -352,13 +373,43 @@ func getParam(param string, r *http.Request) (string, error) {
 
 // Writes `v` as a JSON object to http.ResponseWriter `w`. If an error
 // occurs, writes `http.StatusInternalServerError` to `w`.
-func writeJSON(w http.ResponseWriter, v interface{}) {
+func writeJSON(w http.ResponseWriter, apiResponse APIResponse) {
 	w.Header().Set("Content-Type", "application/json; charset=utf-8")
-	b, err := json.MarshalIndent(v, "", "  ")
+	w.WriteHeader(apiResponse.StatusCode)
+	b, err := json.MarshalIndent(apiResponse, "", "  ")
 	if err != nil {
 		msg := fmt.Sprintf("Internal error: could not format JSON. (%s)\n", err)
 		http.Error(w, msg, http.StatusInternalServerError)
 		return
 	}
 	fmt.Fprintf(w, "%s\n", b)
 }
+
+func writeHTML(w http.ResponseWriter, apiResponse APIResponse) {
+	// Add some additional useful fields for use in templates.
+	if apiResponse.TemplatePath == "" {
+		apiResponse.TemplatePath = "views/default.html.tmpl"
+	}
+	data := struct {
+		APIResponse
+		BaseURL    string
+		StatusText string
+	}{
+		APIResponse: apiResponse,
+		BaseURL:     os.Getenv("FRONTEND_WEBSITE_LINK"),
+		StatusText:  http.StatusText(apiResponse.StatusCode),
+	}
+	tmpl, err := template.ParseFiles(apiResponse.TemplatePath)
+	if err != nil {
+		log.Println(err)
+		raven.CaptureError(err, nil)
+		http.Error(w, "Internal error: could not parse template.", http.StatusInternalServerError)
+		return
+	}
+	w.WriteHeader(apiResponse.StatusCode)
+	err = tmpl.Execute(w, data)
+	if err != nil {
+		log.Println(err)
+		raven.CaptureError(err, nil)
+	}
+}

api_test.go

@@ -1,6 +1,10 @@
 package main
 
 import (
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"strings"
 	"testing"
 
 	"github.com/EFForg/starttls-backend/checker"
@@ -40,3 +44,21 @@ func TestPolicyCheckWithQueuedDomain(t *testing.T) {
 		t.Errorf("Check should have warned.")
 	}
 }
+
+func testHTMLPost(path string, data url.Values, t *testing.T) ([]byte, int) {
+	req, err := http.NewRequest("POST", server.URL+path, strings.NewReader(data.Encode()))
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Set("accept", "text/html")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	body, _ := ioutil.ReadAll(resp.Body)
+	if !strings.Contains(strings.ToLower(string(body)), "</html") {
+		t.Errorf("Response should be HTML, got %s", string(body))
+	}
+	return body, resp.StatusCode
+}

checker/domain.go

@@ -57,7 +57,7 @@ func (d DomainResult) Class() string {
 }
 
 func (d DomainResult) setStatus(status DomainStatus) DomainResult {
-	d.Status = DomainStatus(SetStatus(CheckStatus(d.Status), CheckStatus(status)))
+	d.Status = DomainStatus(SetStatus(Status(d.Status), Status(status)))
 	return d
 }
 

checker/domain_test.go

@@ -21,23 +21,23 @@ var mxLookup = map[string][]string{
 // Fake hostname checks :)
 var hostnameResults = map[string]Result{
 	"noconnection": Result{
-		Status: Error,
+		Status: 3,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", Error, nil, nil},
+			Connectivity: {Connectivity, 3, nil, nil},
 		},
 	},
 	"nostarttls": Result{
-		Status: Failure,
+		Status: 2,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", Failure, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 2, nil, nil},
 		},
 	},
 	"nostarttlsconnect": Result{
-		Status: Error,
+		Status: 3,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", Error, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 3, nil, nil},
 		},
 	},
 }
@@ -73,10 +73,10 @@ func mockCheckHostname(domain string, hostname string) HostnameResult {
 		Result: &Result{
 			Status: 0,
 			Checks: map[string]*Result{
-				"connectivity": {"connectivity", 0, nil, nil},
-				"starttls":     {"starttls", 0, nil, nil},
-				"certificate":  {"certificate", 0, nil, nil},
-				"version":      {"version", 0, nil, nil},
+				Connectivity: {Connectivity, 0, nil, nil},
+				STARTTLS:     {STARTTLS, 0, nil, nil},
+				Certificate:  {Certificate, 0, nil, nil},
+				Version:      {Version, 0, nil, nil},
 			},
 		},
 		Timestamp: time.Now(),

checker/hostname.go

@@ -28,11 +28,11 @@ func (h HostnameResult) checkSucceeded(checkName string) bool {
 }
 
 func (h HostnameResult) couldConnect() bool {
-	return h.checkSucceeded("connectivity")
+	return h.checkSucceeded(Connectivity)
 }
 
 func (h HostnameResult) couldSTARTTLS() bool {
-	return h.checkSucceeded("starttls")
+	return h.checkSucceeded(STARTTLS)
 }
 
 // Modelled after policyMatches in Appendix B of the MTA-STS RFC 8641.
@@ -95,7 +95,7 @@ func smtpDialWithTimeout(hostname string, timeout time.Duration) (*smtp.Client,
 
 // Simply tries to StartTLS with the server.
 func checkStartTLS(client *smtp.Client) *Result {
-	result := MakeResult("starttls")
+	result := MakeResult(STARTTLS)
 	ok, _ := client.Extension("StartTLS")
 	if !ok {
 		return result.Failure("Server does not advertise support for STARTTLS.")
@@ -141,7 +141,7 @@ var certRoots *x509.CertPool
 // Checks that the certificate presented is valid for a particular hostname, unexpired,
 // and chains to a trusted root.
 func checkCert(client *smtp.Client, domain, hostname string) *Result {
-	result := MakeResult("certificate")
+	result := MakeResult(Certificate)
 	state, ok := client.TLSConnectionState()
 	if !ok {
 		return result.Error("TLS not initiated properly.")
@@ -188,7 +188,7 @@ func checkTLSCipher(hostname string, timeout time.Duration) *Result {
 }
 
 func checkTLSVersion(client *smtp.Client, hostname string, timeout time.Duration) *Result {
-	result := MakeResult("version")
+	result := MakeResult(Version)
 
 	// Check the TLS version of the existing connection.
 	tlsConnectionState, ok := client.TLSConnectionState()
@@ -235,7 +235,7 @@ func (c *Checker) CheckHostname(domain string, hostname string) HostnameResult {
 	}
 
 	// Connect to the SMTP server and use that connection to perform as many checks as possible.
-	connectivityResult := MakeResult("connectivity")
+	connectivityResult := MakeResult(Connectivity)
 	client, err := smtpDialWithTimeout(hostname, c.timeout())
 	if err != nil {
 		result.addCheck(connectivityResult.Error("Could not establish connection: %v", err))

checker/hostname_test.go

@@ -107,7 +107,7 @@ func TestNoConnection(t *testing.T) {
 	expected := Result{
 		Status: 3,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 3, nil, nil},
+			"connectivity": {Connectivity, 3, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)
@@ -122,8 +122,8 @@ func TestNoTLS(t *testing.T) {
 	expected := Result{
 		Status: 2,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", 2, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 2, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)
@@ -142,10 +142,10 @@ func TestSelfSigned(t *testing.T) {
 	expected := Result{
 		Status: 2,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", 0, nil, nil},
-			"certificate":  {"certificate", 2, nil, nil},
-			"version":      {"version", 0, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 0, nil, nil},
+			Certificate:  {Certificate, 2, nil, nil},
+			Version:      {Version, 0, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)
@@ -168,10 +168,10 @@ func TestNoTLS12(t *testing.T) {
 	expected := Result{
 		Status: 2,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", 0, nil, nil},
-			"certificate":  {"certificate", 2, nil, nil},
-			"version":      {"version", 1, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 0, nil, nil},
+			Certificate:  {Certificate, 2, nil, nil},
+			Version:      {Version, 1, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)
@@ -200,10 +200,10 @@ func TestSuccessWithFakeCA(t *testing.T) {
 	expected := Result{
 		Status: 0,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", 0, nil, nil},
-			"certificate":  {"certificate", 0, nil, nil},
-			"version":      {"version", 0, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 0, nil, nil},
+			Certificate:  {Certificate, 0, nil, nil},
+			Version:      {Version, 0, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)
@@ -275,10 +275,10 @@ func TestFailureWithBadHostname(t *testing.T) {
 	expected := Result{
 		Status: 2,
 		Checks: map[string]*Result{
-			"connectivity": {"connectivity", 0, nil, nil},
-			"starttls":     {"starttls", 0, nil, nil},
-			"certificate":  {"certificate", 2, nil, nil},
-			"version":      {"version", 0, nil, nil},
+			Connectivity: {Connectivity, 0, nil, nil},
+			STARTTLS:     {STARTTLS, 0, nil, nil},
+			Certificate:  {Certificate, 2, nil, nil},
+			Version:      {Version, 0, nil, nil},
 		},
 	}
 	compareStatuses(t, expected, result)