tdf#87938 libcmis: Google 2FA implementation

2 Factor Authentication for Google Drive, changes:
+ parsing additional page with challenge - pin code verification
+ calling the interaction dialog requesting the code
+ dialog title changed to more general: Authentication Code
+ dialog shows url field only if not empty

Change-Id: Idb3ebbad6a12849b9e50af87b46324bfbe966bab
Reviewed-on: https://gerrit.libreoffice.org/25002
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: David Tardon <dtardon@redhat.com>

4 files changed, 52 insertions, 0 deletions

diff --git a/ucb/source/ucp/cmis/auth_provider.cxx b/ucb/source/ucp/cmis/auth_provider.cxx
index 64cb84ecd6ca..0c3e4c0ec52f 100644
--- a/ucb/source/ucp/cmis/auth_provider.cxx
+++ b/ucb/source/ucp/cmis/auth_provider.cxx
@@ -110,6 +110,48 @@ namespace cmis
 
         return strdup( "" );
     }
+
+    char* AuthProvider::gdriveAuthCodeFallback( const char* /*url*/,
+            const char* /*username*/,
+            const char* /*password*/ )
+    {
+        OUString instructions = "PIN:";
+        OUString url_oustr( "" );
+        const css::uno::Reference<
+            css::ucb::XCommandEnvironment> xEnv = getXEnv( );
+
+        if ( xEnv.is() )
+        {
+            uno::Reference< task::XInteractionHandler > xIH
+                = xEnv->getInteractionHandler();
+
+            if ( xIH.is() )
+            {
+                rtl::Reference< ucbhelper::AuthenticationFallbackRequest > xRequest
+                    = new ucbhelper::AuthenticationFallbackRequest (
+                            instructions, url_oustr );
+
+                xIH->handle( xRequest.get() );
+
+                rtl::Reference< ucbhelper::InteractionContinuation > xSelection
+                    = xRequest->getSelection();
+
+                if ( xSelection.is() )
+                {
+                    // Handler handled the request.
+                    const rtl::Reference< ucbhelper::InteractionAuthFallback >&
+                        xAuthFallback = xRequest->getAuthFallbackInter( );
+                    if ( xAuthFallback.is() )
+                    {
+                        OUString code = xAuthFallback->getCode( );
+                        return strdup( OUSTR_TO_STDSTR( code ).c_str( ) );
+                    }
+                }
+            }
+        }
+
+        return strdup( "" );
+    }
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/ucb/source/ucp/cmis/auth_provider.hxx b/ucb/source/ucp/cmis/auth_provider.hxx
index 977254a8877c..e633e95bd012 100644
--- a/ucb/source/ucp/cmis/auth_provider.hxx
+++ b/ucb/source/ucp/cmis/auth_provider.hxx
@@ -34,6 +34,10 @@ namespace cmis
                     const char* /*username*/,
                     const char* /*password*/ );
 
+            static char* gdriveAuthCodeFallback( const char* /*url*/,
+                    const char* /*username*/,
+                    const char* /*password*/ );
+
             static void setXEnv( const css::uno::Reference< css::ucb::XCommandEnvironment>& xEnv ) { sm_xEnv = xEnv; }
 
             static const css::uno::Reference< css::ucb::XCommandEnvironment>& getXEnv( ) { return sm_xEnv; }
diff --git a/ucb/source/ucp/cmis/cmis_content.cxx b/ucb/source/ucp/cmis/cmis_content.cxx
index dea8ec7b01ef..b097a6f4e0ca 100644
--- a/ucb/source/ucp/cmis/cmis_content.cxx
+++ b/ucb/source/ucp/cmis/cmis_content.cxx
@@ -376,10 +376,13 @@ namespace cmis
                     // Initiate a CMIS session and register it as we found nothing
                     libcmis::OAuth2DataPtr oauth2Data;
                     if ( m_aURL.getBindingUrl( ) == GDRIVE_BASE_URL )
+                    {
+                        libcmis::SessionFactory::setOAuth2AuthCodeProvider( authProvider.gdriveAuthCodeFallback );
                         oauth2Data.reset( new libcmis::OAuth2Data(
                             GDRIVE_AUTH_URL, GDRIVE_TOKEN_URL,
                             GDRIVE_SCOPE, GDRIVE_REDIRECT_URI,
                             GDRIVE_CLIENT_ID, GDRIVE_CLIENT_SECRET ) );
+                    }
                     if ( m_aURL.getBindingUrl().startsWith( ALFRESCO_CLOUD_BASE_URL ) )
                         oauth2Data.reset( new libcmis::OAuth2Data(
                             ALFRESCO_CLOUD_AUTH_URL, ALFRESCO_CLOUD_TOKEN_URL,
diff --git a/ucb/source/ucp/cmis/cmis_repo_content.cxx b/ucb/source/ucp/cmis/cmis_repo_content.cxx
index 75b3790510e5..cc1df948df44 100644
--- a/ucb/source/ucp/cmis/cmis_repo_content.cxx
+++ b/ucb/source/ucp/cmis/cmis_repo_content.cxx
@@ -175,10 +175,13 @@ namespace cmis
                         // Create a session to get repositories
                         libcmis::OAuth2DataPtr oauth2Data;
                         if ( m_aURL.getBindingUrl( ) == GDRIVE_BASE_URL )
+                        {
+                            libcmis::SessionFactory::setOAuth2AuthCodeProvider( authProvider.gdriveAuthCodeFallback );
                             oauth2Data.reset( new libcmis::OAuth2Data(
                                 GDRIVE_AUTH_URL, GDRIVE_TOKEN_URL,
                                 GDRIVE_SCOPE, GDRIVE_REDIRECT_URI,
                                 GDRIVE_CLIENT_ID, GDRIVE_CLIENT_SECRET ) );
+                        }
                         if ( m_aURL.getBindingUrl().startsWith( ALFRESCO_CLOUD_BASE_URL ) )
                             oauth2Data.reset( new libcmis::OAuth2Data(
                                 ALFRESCO_CLOUD_AUTH_URL, ALFRESCO_CLOUD_TOKEN_URL,