Extend URI configuration with schemes for encryption/trust

Added support for:
- bolt+s
- bolt+ssc
- neo4j+s
- neo4j+ssc

Author: Peter Wilhelmsson

src/driver.js

@@ -31,6 +31,7 @@ import {
 import Session from './session'
 import RxSession from './session-rx'
 import { ALL } from './internal/request-message'
+import { ENCRYPTION_ON, ENCRYPTION_OFF } from './internal/util'
 
 const DEFAULT_MAX_CONNECTION_LIFETIME = 60 * 60 * 1000 // 1 hour
 
@@ -136,6 +137,34 @@ class Driver {
     return connectionProvider.supportsTransactionConfig()
   }
 
+  /**
+   * @protected
+   * @returns {boolean}
+   */
+  _supportsRouting () {
+    return false
+  }
+
+  /**
+   * Returns boolean to indicate if driver has been configured with encryption enabled.
+   *
+   * @protected
+   * @returns {boolean}
+   */
+  _isEncrypted () {
+    return this._config.encrypted === ENCRYPTION_ON
+  }
+
+  /**
+   * Returns the configured trust strategy that the driver has been configured with.
+   *
+   * @protected
+   * @returns {TrustStrategy}
+   */
+  _getTrust () {
+    return this._config.trust
+  }
+
   /**
    * Acquire a session to communicate with the database. The session will
    * borrow connections from the underlying connection pool as required and

src/index.js

@@ -37,7 +37,12 @@ import Record from './record'
 import { Driver, READ, WRITE } from './driver'
 import RoutingDriver from './routing-driver'
 import VERSION from './version'
-import { assertString, isEmptyObjectOrNull } from './internal/util'
+import {
+  ENCRYPTION_ON,
+  ENCRYPTION_OFF,
+  assertString,
+  isEmptyObjectOrNull
+} from './internal/util'
 import urlUtil from './internal/url-util'
 import { isPoint, Point } from './spatial-types'
 import {
@@ -178,18 +183,63 @@ import ServerAddress from './internal/server-address'
 function driver (url, authToken, config = {}) {
   assertString(url, 'Bolt URL')
   const parsedUrl = urlUtil.parseDatabaseUrl(url)
-  if (parsedUrl.scheme === 'neo4j') {
+
+  // Determine entryption/trust options from the URL.
+  let routing = false
+  let encrypted = false
+  let trust = ''
+  switch (parsedUrl.scheme) {
+    case 'bolt':
+      break
+    case 'bolt+s':
+      encrypted = true
+      trust = 'TRUST_SYSTEM_CA_SIGNED_CERTIFICATES'
+      break
+    case 'bolt+ssc':
+      encrypted = true
+      trust = 'TRUST_ALL_CERTIFICATES'
+      break
+    case 'neo4j':
+      routing = true
+      break
+    case 'neo4j+s':
+      encrypted = true
+      trust = 'TRUST_SYSTEM_CA_SIGNED_CERTIFICATES'
+      routing = true
+      break
+    case 'neo4j+ssc':
+      encrypted = true
+      trust = 'TRUST_ALL_CERTIFICATES'
+      routing = true
+      break
+    default:
+      throw new Error(`Unknown scheme: ${parsedUrl.scheme}`)
+  }
+
+  // Encryption enabled on URL, propagate trust to the config.
+  if (encrypted) {
+    // Check for configuration conflict between URL and config.
+    if ('encrypted' in config || 'trust' in config) {
+      throw new Error(
+        'Encryption/trust can only be configured either through URL or config, not both'
+      )
+    }
+    config.encrypted = ENCRYPTION_ON
+    config.trust = trust
+  }
+
+  if (routing) {
     return new RoutingDriver(
       ServerAddress.fromUrl(parsedUrl.hostAndPort),
       parsedUrl.query,
       USER_AGENT,
       authToken,
       config
     )
-  } else if (parsedUrl.scheme === 'bolt') {
+  } else {
     if (!isEmptyObjectOrNull(parsedUrl.query)) {
       throw new Error(
-        `Parameters are not supported with scheme 'bolt'. Given URL: '${url}'`
+        `Parameters are not supported with none routed scheme. Given URL: '${url}'`
       )
     }
     return new Driver(
@@ -198,8 +248,6 @@ function driver (url, authToken, config = {}) {
       authToken,
       config
     )
-  } else {
-    throw new Error(`Unknown scheme: ${parsedUrl.scheme}`)
   }
 }
 

src/routing-driver.js

@@ -52,6 +52,10 @@ class RoutingDriver extends Driver {
       authToken: authToken
     })
   }
+
+  _supportsRouting () {
+    return true
+  }
 }
 
 /**

test/driver.test.js

@@ -27,6 +27,72 @@ import {
 import { ServerVersion, VERSION_4_0_0 } from '../src/internal/server-version'
 import testUtils from './internal/test-utils'
 
+// As long as driver creation doesn't touch the network it's fine to run
+// this as a unit test.
+describe('#unit driver', () => {
+  let driver
+
+  afterEach(async () => {
+    if (driver) {
+      await driver.close()
+    }
+  })
+
+  it('should create an unencrypted, non-routed driver for scheme: bolt', () => {
+    driver = neo4j.driver('bolt://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeFalsy()
+    expect(driver._supportsRouting()).toBeFalsy()
+  })
+
+  it('should create an encrypted, system CAs trusting, non-routed driver for scheme: bolt+s', () => {
+    driver = neo4j.driver('bolt+s://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeTruthy()
+    expect(driver._getTrust()).toEqual('TRUST_SYSTEM_CA_SIGNED_CERTIFICATES')
+    expect(driver._supportsRouting()).toBeFalsy()
+  })
+
+  it('should create an encrypted, all trusting, non-routed driver for scheme: bolt+ssc', () => {
+    driver = neo4j.driver('bolt+ssc://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeTruthy()
+    expect(driver._getTrust()).toEqual('TRUST_ALL_CERTIFICATES')
+    expect(driver._supportsRouting()).toBeFalsy()
+  })
+
+  it('should create an unencrypted, routed driver for scheme: neo4j', () => {
+    driver = neo4j.driver('neo4j://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeFalsy()
+    expect(driver._supportsRouting()).toBeTruthy()
+  })
+
+  it('should create an encrypted, system CAs trusting, routed driver for scheme: neo4j+s', () => {
+    driver = neo4j.driver('neo4j+s://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeTruthy()
+    expect(driver._getTrust()).toEqual('TRUST_SYSTEM_CA_SIGNED_CERTIFICATES')
+    expect(driver._supportsRouting()).toBeTruthy()
+  })
+
+  it('should create an encrypted, all trusting, routed driver for scheme: neo4j+ssc', () => {
+    driver = neo4j.driver('neo4j+ssc://localhost', sharedNeo4j.authToken)
+    expect(driver._isEncrypted()).toBeTruthy()
+    expect(driver._getTrust()).toEqual('TRUST_ALL_CERTIFICATES')
+    expect(driver._supportsRouting()).toBeTruthy()
+  })
+
+  it('should throw when encryption in url AND in config', () => {
+    expect(() =>
+      neo4j.driver('neo4j+ssc://localhost', sharedNeo4j.authToken, {
+        encrypted: 'ENCRYPTION_OFF'
+      })
+    ).toThrow()
+    // Throw even in case where there is no conflict
+    expect(() =>
+      neo4j.driver('neo4j+s://localhost', sharedNeo4j.authToken, {
+        encrypted: 'ENCRYPTION_ON'
+      })
+    ).toThrow()
+  })
+})
+
 describe('#integration driver', () => {
   let driver
   let serverVersion