ppk passphrase support (fixes #281)

terminus-ssh/src/components/promptModal.component.ts

@@ -14,7 +14,9 @@ export class PromptModalComponent {
     ) { }
 
     ngOnInit () {
+        setTimeout(() => {
             this.input.nativeElement.focus()
+        })
     }
 
     ok () {

terminus-ssh/src/services/ssh.service.ts

@@ -49,7 +49,11 @@ export class SSHService {
             if (privateKey) {
                 this.logger.info('Loaded private key from', privateKeyPath)
 
-                if (privateKey.includes('ENCRYPTED')) {
+                let encrypted = privateKey.includes('ENCRYPTED')
+                if (privateKeyPath.toLowerCase().endsWith('.ppk')) {
+                    encrypted = encrypted || privateKey.includes('Encryption:') && !privateKey.includes('Encryption: none')
+                }
+                if (encrypted) {
                     let modal = this.ngbModal.open(PromptModalComponent)
                     modal.componentInstance.prompt = 'Private key passphrase'
                     modal.componentInstance.password = true