Adds buttons to test availability of server from public internet

backend/internal/certificate.js

@@ -1,5 +1,6 @@
 const _                  = require('lodash');
 const fs                 = require('fs');
+const https              = require('https');
 const tempWrite          = require('temp-write');
 const moment             = require('moment');
 const logger             = require('../logger').ssl;
@@ -15,6 +16,7 @@ const letsencryptConfig  = '/etc/letsencrypt.ini';
 const certbotCommand     = 'certbot';
 const archiver           = require('archiver');
 const path               = require('path');
+const { isArray }        = require('lodash');
 
 function omissions() {
 	return ['is_deleted'];
@@ -1119,6 +1121,94 @@ const internalCertificate = {
 		} else {
 			return Promise.resolve();
 		}
+	},
+
+	testHttpsChallenge: async (access, domains) => {
+		await access.can('certificates:list');
+
+		if (!isArray(domains)) {
+			throw new error.InternalValidationError('Domains must be an array of strings');
+		}
+		if (domains.length === 0) {
+			throw new error.InternalValidationError('No domains provided');
+		}
+
+		// Create a test challenge file
+		const testChallengeDir  = '/data/letsencrypt-acme-challenge/.well-known/acme-challenge';
+		const testChallengeFile = testChallengeDir + '/test-challenge';
+		fs.mkdirSync(testChallengeDir, {recursive: true});
+		fs.writeFileSync(testChallengeFile, 'Success', {encoding: 'utf8'});
+
+		async function performTestForDomain (___domain) {
+			logger.info('Testing http challenge for ' + ___domain);
+			const url      = `http://${___domain}/.well-known/acme-challenge/test-challenge`;
+			const formBody = `method=G&url=${encodeURI(url)}&bodytype=T&requestbody=&headername=User-Agent&headervalue=None&locationid=1&ch=false&cc=false`;
+			const options  = {
+				method:  'POST',
+				headers: {
+					'Content-Type':   'application/x-www-form-urlencoded',
+					'Content-Length': Buffer.byteLength(formBody)
+				}
+			};
+
+			const result = await new Promise((resolve) => {
+
+				const req = https.request('https://www.site24x7.com/tools/restapi-tester', options, function (res) {
+					let responseBody = '';
+
+					res.on('data', (chunk) => responseBody = responseBody + chunk);
+					res.on('end', function () {
+						const parsedBody = JSON.parse(responseBody + '');
+						if (res.statusCode !== 200) {
+							logger.warn(`Failed to test HTTP challenge for ___domain ${___domain}`, res);
+							resolve(undefined);
+						}
+						resolve(parsedBody);
+					});
+				});
+
+				// Make sure to write the request body.
+				req.write(formBody);
+				req.end();
+				req.on('error', function (e) { logger.warn(`Failed to test HTTP challenge for ___domain ${___domain}`, e);
+					resolve(undefined); });
+			});
+
+			if (!result) {
+				// Some error occurred while trying to get the data
+				return 'failed';
+			} else if (`${result.responsecode}` === '200' && result.htmlresponse === 'Success') {
+				// Server exists and has responded with the correct data
+				return 'ok';
+			} else if (`${result.responsecode}` === '200') {
+				// Server exists but has responded with wrong data
+				logger.info(`HTTP challenge test failed for ___domain ${___domain} because of invalid returned data:`, result.htmlresponse);
+				return 'wrong-data';
+			} else if (`${result.responsecode}` === '404') {
+				// Server exists but responded with a 404
+				logger.info(`HTTP challenge test failed for ___domain ${___domain} because code 404 was returned`);
+				return '404';
+			} else if (`${result.responsecode}` === '0' || (typeof result.reason === 'string' && result.reason.toLowerCase() === 'host unavailable')) {
+				// Server does not exist at ___domain
+				logger.info(`HTTP challenge test failed for ___domain ${___domain} the host was not found`);
+				return 'no-host';
+			} else {
+				// Other errors
+				logger.info(`HTTP challenge test failed for ___domain ${___domain} because code ${result.responsecode} was returned`);
+				return `other:${result.responsecode}`;
+			}
+		}
+
+		const results = {};
+
+		for (const ___domain of domains){
+			results[___domain] = await performTestForDomain(___domain);
+		}
+
+		// Remove the test challenge file
+		fs.unlinkSync(testChallengeFile);
+
+		return results;
 	}
 };
 

backend/migrations/20211108145214_regenerate_default_host.js

@@ -0,0 +1,50 @@
+const migrate_name  = 'stream_domain';
+const logger        = require('../logger').migrate;
+const internalNginx = require('../internal/nginx');
+
+async function regenerateDefaultHost(knex) {
+	const row = await knex('setting').select('*').where('id', 'default-site').first();
+
+	if (!row) {
+		return Promise.resolve();
+	}
+
+	return internalNginx.deleteConfig('default')
+		.then(() => {
+			return internalNginx.generateConfig('default', row);
+		})
+		.then(() => {
+			return internalNginx.test();
+		})
+		.then(() => {
+			return internalNginx.reload();
+		});
+}
+
+/**
+	* Migrate
+	*
+	* @see http://knexjs.org/#Schema
+	*
+	* @param   {Object} knex
+	* @param   {Promise} Promise
+	* @returns {Promise}
+	*/
+exports.up = function (knex) {
+	logger.info('[' + migrate_name + '] Migrating Up...');
+
+	return regenerateDefaultHost(knex);
+};
+
+/**
+	* Undo Migrate
+	*
+	* @param   {Object} knex
+	* @param   {Promise} Promise
+	* @returns {Promise}
+	*/
+exports.down = function (knex) {
+	logger.info('[' + migrate_name + '] Migrating Down...');
+
+	return regenerateDefaultHost(knex);
+};

backend/routes/api/nginx/certificates.js

@@ -68,6 +68,32 @@ router
 			.catch(next);
 	});
 
+/**
+ * Test HTTP challenge for domains
+ *
+ * /api/nginx/certificates/test-http
+ */
+router
+	.route('/test-http')
+	.options((req, res) => {
+		res.sendStatus(204);
+	})
+	.all(jwtdecode())
+
+/**
+ * GET /api/nginx/certificates/test-http
+ *
+ * Test HTTP challenge for domains
+ */
+	.get((req, res, next) => {
+		internalCertificate.testHttpsChallenge(res.locals.access, JSON.parse(req.query.domains))
+			.then((result) => {
+				res.status(200)
+					.send(result);
+			})
+			.catch(next);
+	});
+
 /**
  * Specific certificate
  *
@@ -209,7 +235,6 @@ router
 			.catch(next);
 	});
 
-
 /**
  * Download LE Certs
  *

backend/schema/endpoints/certificates.json

@@ -157,6 +157,17 @@
       "targetSchema": {
         "type": "boolean"
       }
+    },
+    {
+      "title": "Test HTTP Challenge",
+      "description": "Tests whether the HTTP challenge should work",
+      "href": "/nginx/certificates/{definitions.identity.example}/test-http",
+      "access": "private",
+      "method": "GET",
+      "rel": "info",
+      "http_header": {
+        "$ref": "../examples.json#/definitions/auth_header"
+      }
     }
   ]
 }

frontend/js/app/api.js

@@ -685,6 +685,16 @@ module.exports = {
                 return fetch('post', 'nginx/certificates/' + id + '/renew', undefined, {timeout});
             },
 
+            /**
+             * @param  {Number}  id
+             * @returns {Promise}
+             */
+            testHttpChallenge: function (domains) {
+                return fetch('get', 'nginx/certificates/test-http?' + new URLSearchParams({
+                    domains: JSON.stringify(domains),
+                }));
+            },
+
             /**
              * @param   {Number}  id
              * @returns {Promise}

frontend/js/app/controller.js

@@ -366,6 +366,19 @@ module.exports = {
         }
     },
 
+    /**
+     * Certificate Test Reachability
+     *
+     * @param model
+     */
+    showNginxCertificateTestReachability: function (model) {
+      if (Cache.User.isAdmin() || Cache.User.canManage('certificates')) {
+        require(['./main', './nginx/certificates/test'], function (App, View) {
+          App.UI.showModalDialog(new View({model: model}));
+        });
+      }
+    },
+
     /**
      * Audit Log
      */

frontend/js/app/nginx/certificates/form.ejs

@@ -18,6 +18,14 @@
                             <input type="text" name="domain_names" class="form-control" id="input-domains" value="<%- domain_names.join(',') %>" required>
                             <div class="text-blue"><i class="fe fe-alert-triangle"></i> <%- i18n('ssl', 'hosts-warning') %></div>
                         </div>
+
+                        <div class="mb-3 test-domains-container">
+                            <button type="button" class="btn btn-secondary test-domains col-sm-12"><%- i18n('certificates', 'test-reachability') %></button>
+                            <div class="text-secondary small">
+                                <i class="fe fe-info"></i> 
+                                <%- i18n('certificates', 'reachability-info') %>
+                            </div>
+                        </div>
                     </div>
                     <div class="col-sm-12 col-md-12">
                         <div class="form-group">

frontend/js/app/nginx/certificates/form.js

@@ -29,6 +29,8 @@ module.exports = Mn.View.extend({
         non_loader_content:                   '.non-loader-content',
         le_error_info:                        '#le-error-info',
         domain_names:                         'input[name="domain_names"]',
+        test_domains_container:               '.test-domains-container',
+        test_domains_button:                  '.test-domains',
         buttons:                              '.modal-footer button',
         cancel:                               'button.cancel',
         save:                                 'button.save',
@@ -56,10 +58,12 @@ module.exports = Mn.View.extend({
                     this.ui.dns_provider_credentials.prop('required', 'required');
                 }
                 this.ui.dns_challenge_content.show();
+                this.ui.test_domains_container.hide();
             } else {
                 this.ui.dns_provider.prop('required', false);
                 this.ui.dns_provider_credentials.prop('required', false);
-                this.ui.dns_challenge_content.hide();                
+                this.ui.dns_challenge_content.hide();
+                this.ui.test_domains_container.show();            
             }
         },
 
@@ -205,6 +209,23 @@ module.exports = Mn.View.extend({
                     this.ui.non_loader_content.show();
                 });
         },
+        'click @ui.test_domains_button': function (e) {
+            e.preventDefault();
+            const domainNames = this.ui.domain_names[0].value.split(',');
+            if (domainNames && domainNames.length > 0) {
+                this.model.set('domain_names', domainNames);
+                this.model.set('back_to_add', true);
+                App.Controller.showNginxCertificateTestReachability(this.model);
+            }
+        },
+        'change @ui.domain_names': function(e){
+            const domainNames = e.target.value.split(',');
+            if (domainNames && domainNames.length > 0) {
+                this.ui.test_domains_button.prop('disabled', false);
+            } else {
+                this.ui.test_domains_button.prop('disabled', true);
+            }
+        },
         'change @ui.other_certificate_key': function(e){
             this.setFileName("other_certificate_key_label", e)
         },
@@ -257,6 +278,10 @@ module.exports = Mn.View.extend({
         this.ui.credentials_file_content.hide(); 
         this.ui.loader_content.hide();
         this.ui.le_error_info.hide();
+        const domainNames = this.ui.domain_names[0].value.split(',');
+        if (!domainNames || domainNames.length === 0 || (domainNames.length === 1 && domainNames[0] === "")) {
+            this.ui.test_domains_button.prop('disabled', true);
+        }
     },
 
     initialize: function (options) {

frontend/js/app/nginx/certificates/list/item.ejs

@@ -42,6 +42,9 @@
             <% if (provider === 'letsencrypt') { %>
                 <a href="#" class="renew dropdown-item"><i class="dropdown-icon fe fe-refresh-cw"></i> <%- i18n('certificates', 'force-renew') %></a>
                 <a href="#" class="download dropdown-item"><i class="dropdown-icon fe fe-download"></i> <%- i18n('certificates', 'download') %></a>
+                <% if (meta.dns_challenge === false) { %>
+                    <a href="#" class="test dropdown-item"><i class="dropdown-icon fe fe-globe"></i> <%- i18n('certificates', 'test-reachability') %></a>
+                <% } %>
                 <div class="dropdown-divider"></div>
             <% } %>
             <a href="#" class="delete dropdown-item"><i class="dropdown-icon fe fe-trash-2"></i> <%- i18n('str', 'delete') %></a>

frontend/js/app/nginx/certificates/list/item.js

@@ -2,7 +2,7 @@ const Mn            = require('backbone.marionette');
 const moment        = require('moment');
 const App           = require('../../../main');
 const template      = require('./item.ejs');
-const dns_providers = require('../../../../../../global/certbot-dns-plugins')
+const dns_providers = require('../../../../../../global/certbot-dns-plugins');
 
 module.exports = Mn.View.extend({
     template: template,
@@ -12,7 +12,8 @@ module.exports = Mn.View.extend({
         host_link: '.host-link',
         renew:     'a.renew',
         delete:    'a.delete',
-        download:  'a.download'
+        download:  'a.download',
+        test:      'a.test'
     },
 
     events: {
@@ -31,11 +32,16 @@ module.exports = Mn.View.extend({
             let win = window.open($(e.currentTarget).attr('rel'), '_blank');
             win.focus();
         },
-
+                
         'click @ui.download': function (e) {
             e.preventDefault();
-            App.Api.Nginx.Certificates.download(this.model.get('id'))
-        }
+            App.Api.Nginx.Certificates.download(this.model.get('id'));
+        },
+
+        'click @ui.test': function (e) {
+            e.preventDefault();
+            App.Controller.showNginxCertificateTestReachability(this.model);
+        },
     },
 
     templateContext: {

frontend/js/app/nginx/certificates/test.ejs

@@ -0,0 +1,15 @@
+<div class="modal-content">
+    <div class="modal-header">
+        <h5 class="modal-title"><%- i18n('certificates', 'reachability-title') %></h5>
+    </div>
+    <div class="modal-body">
+        <div class="waiting text-center">
+            <%= i18n('str', 'please-wait') %>
+        </div>
+        <div class="alert alert-danger error" role="alert"></div>
+        <div class="alert alert-success success" role="alert"></div>
+    </div>
+    <div class="modal-footer">
+        <button type="button" class="btn btn-secondary cancel" disabled><%- i18n('str', 'close') %></button>
+    </div>
+</div>