Added support for AAD authentication via connection string

CHANGELOG.txt

@@ -1,3 +1,7 @@
+v9.?.? (2022-??-??)
+-------------------
+[new] Add support for AAD authentication via connection string ((#1436)[https://github.com/tediousjs/node-mssql/pull/1436])
+
 v9.0.1 (2022-08-18)
 -------------------
 [fix] fix regression in requestTimout option not accepting `0` as a value ([#1421](https://github.com/tediousjs/node-mssql/pull/1421))

README.md

@@ -571,12 +571,36 @@ Complete list of pool options can be found [here](https://github.com/vincit/tarn
 In addition to configuration object there is an option to pass config as a connection string. Connection strings are supported.
 
 ##### Classic Connection String
+###### Standard configuration using tedious driver
 
 ```
 Server=localhost,1433;Database=database;User Id=username;Password=password;Encrypt=true
+```
+###### Standard configuration using msnodesqlv8 driver
+```
 Driver=msnodesqlv8;Server=(local)\INSTANCE;Database=database;UID=DOMAIN\username;PWD=password;Encrypt=true
 ```
 
+##### Azure Active Directory Authentication Connection String
+
+Several types of Azure Authentication are supported:
+###### Authentication using Default Azure Credentials
+```
+Server=*.database.windows.net;Database=database;Authentication=azure-active-directory-default;ClientID=clientid;Encrypt=true
+```
+###### Authentication using Active Directory Password
+```
+Server=*.database.windows.net;Database=database;Authentication=azure-active-directory-password;User Id=username;Password=password;ClientID=clientid;TenantID=tenantid;Encrypt=true
+```
+###### Authentication using Access Token
+```
+Server=*.database.windows.net;Database=database;Authentication=azure-active-directory-access-token;Token=token;Encrypt=true
+```
+###### Authentication using Service Principal
+```
+Server=*.database.windows.net;Database=database;Authentication=azure-active-directory-service-principal-secret;ClientID=clientid;ClientSecret=clientsecret;TenantID=tenantid;Encrypt=true
+```
+
 ## Drivers
 
 ### Tedious
@@ -2097,4 +2121,4 @@ to create new connections or not
 [appveyor-url]: https://ci.appveyor.com/project/tediousjs/node-mssql
 
 [tedious-url]: https://www.npmjs.com/package/tedious
-[msnodesqlv8-url]: https://www.npmjs.com/package/msnodesqlv8
+[msnodesqlv8-url]: https://www.npmjs.com/package/msnodesqlv8

lib/base/connection-pool.js

@@ -114,6 +114,9 @@ class ConnectionPool extends EventEmitter {
         case 'attachdbfilename':
           break
         case 'authentication':
+          Object.assign(config.authentication, {
+            type: value
+          })
           break
         case 'column encryption setting':
           break
@@ -133,6 +136,16 @@ class ConnectionPool extends EventEmitter {
           break
         case 'context connection':
           break
+        case 'client id':
+          Object.assign(config.authentication.options, {
+            clientId: value
+          })
+          break
+        case 'client secret':
+          Object.assign(config.authentication.options, {
+            clientSecret: value
+          })
+          break
         case 'current language':
           Object.assign(config.options, {
             language: value
@@ -222,6 +235,16 @@ class ConnectionPool extends EventEmitter {
           break
         case 'replication':
           break
+        case 'tenant id':
+          Object.assign(config.authentication.options, {
+            tenantId: value
+          })
+          break
+        case 'token':
+          Object.assign(config.authentication.options, {
+            token: value
+          })
+          break
         case 'transaction binding':
           Object.assign(config.options, {
             enableImplicitTransactions: value.toLowerCase() === 'implicit unbind'
@@ -278,7 +301,7 @@ class ConnectionPool extends EventEmitter {
           break
       }
       return config
-    }, { options: {}, pool: {} })
+    }, { authentication: { options: {} }, options: {}, pool: {} })
   }
 
   /**