dlls/msi/events.c - wine - Git at Google

 /*
  * Implementation of the Microsoft Installer (msi.dll)
  *
  * Copyright 2005 Aric Stewart for CodeWeavers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #include <stdarg.h>
 #include <stdio.h>

 #include "windef.h"
 #include "winbase.h"
 #include "winerror.h"
 #include "winreg.h"
 #include "msi.h"
 #include "msipriv.h"

 #include "wine/debug.h"
 #include "wine/unicode.h"

 WINE_DEFAULT_DEBUG_CHANNEL(msi);

 typedef UINT (*EVENTHANDLER)(MSIPACKAGE*,LPCWSTR,msi_dialog *);

 struct control_events
 {
     const WCHAR *event;
     EVENTHANDLER handler;
 };

 struct subscriber {
     struct list entry;
     msi_dialog *dialog;
     LPWSTR event;
     LPWSTR control;
     LPWSTR attribute;
 };

 static UINT ControlEvent_HandleControlEvent(MSIPACKAGE *, LPCWSTR, LPCWSTR, msi_dialog*);

 /*
  * Create a dialog box and run it if it's modal
  */
 static UINT event_do_dialog( MSIPACKAGE *package, LPCWSTR name, msi_dialog *parent, BOOL destroy_modeless )
 {
     msi_dialog *dialog;
     UINT r;

     /* create a new dialog */
     dialog = msi_dialog_create( package, name, parent,
                                 ControlEvent_HandleControlEvent );
     if( dialog )
     {
         /* kill the current modeless dialog */
         if( destroy_modeless && package->dialog )
         {
             msi_dialog_destroy( package->dialog );
             package->dialog = NULL;
         }

         /* modeless dialogs return an error message */
         r = msi_dialog_run_message_loop( dialog );
         if( r == ERROR_SUCCESS )
             msi_dialog_destroy( dialog );
         else
             package->dialog = dialog;
     }
     else
         r = ERROR_FUNCTION_FAILED;

     return r;
 }


 /*
  * End a modal dialog box
  */
 static UINT ControlEvent_EndDialog(MSIPACKAGE* package, LPCWSTR argument,
                                    msi_dialog* dialog)
 {
     static const WCHAR szExit[] = {'E','x','i','t',0};
     static const WCHAR szRetry[] = {'R','e','t','r','y',0};
     static const WCHAR szIgnore[] = {'I','g','n','o','r','e',0};
     static const WCHAR szReturn[] = {'R','e','t','u','r','n',0};

     if (!strcmpW( argument, szExit ))
         package->CurrentInstallState = ERROR_INSTALL_USEREXIT;
     else if (!strcmpW( argument, szRetry ))
         package->CurrentInstallState = ERROR_INSTALL_SUSPEND;
     else if (!strcmpW( argument, szIgnore ))
         package->CurrentInstallState = ERROR_SUCCESS;
     else if (!strcmpW( argument, szReturn ))
     {
         msi_dialog *parent = msi_dialog_get_parent(dialog);
         msi_free(package->next_dialog);
         package->next_dialog = (parent) ? strdupW(msi_dialog_get_name(parent)) : NULL;
         package->CurrentInstallState = ERROR_SUCCESS;
     }
     else
     {
         ERR("Unknown argument string %s\n",debugstr_w(argument));
         package->CurrentInstallState = ERROR_FUNCTION_FAILED;
     }

     ControlEvent_CleanupDialogSubscriptions(package, msi_dialog_get_name( dialog ));
     msi_dialog_end_dialog( dialog );
     return ERROR_SUCCESS;
 }

 /*
  * transition from one modal dialog to another modal dialog
  */
 static UINT ControlEvent_NewDialog(MSIPACKAGE* package, LPCWSTR argument,
                                    msi_dialog *dialog)
 {
     /* store the name of the next dialog, and signal this one to end */
     package->next_dialog = strdupW(argument);
     ControlEvent_CleanupSubscriptions(package);
     msi_dialog_end_dialog( dialog );
     return ERROR_SUCCESS;
 }

 /*
  * Create a new child dialog of an existing modal dialog
  */
 static UINT ControlEvent_SpawnDialog(MSIPACKAGE* package, LPCWSTR argument,
                               msi_dialog *dialog)
 {
     /* don't destroy a modeless dialogs that might be our parent */
     event_do_dialog( package, argument, dialog, FALSE );
     if( package->CurrentInstallState != ERROR_SUCCESS )
         msi_dialog_end_dialog( dialog );
     return ERROR_SUCCESS;
 }

 /*
  * Creates a dialog that remains up for a period of time
  * based on a condition
  */
 static UINT ControlEvent_SpawnWaitDialog(MSIPACKAGE* package, LPCWSTR argument,
                                   msi_dialog* dialog)
 {
     FIXME("Doing Nothing\n");
     return ERROR_SUCCESS;
 }

 static UINT ControlEvent_DoAction(MSIPACKAGE* package, LPCWSTR argument,
                                   msi_dialog* dialog)
 {
     ACTION_PerformAction(package, argument, -1);
     return ERROR_SUCCESS;
 }

 static UINT ControlEvent_AddLocal( MSIPACKAGE *package, LPCWSTR argument, msi_dialog *dialog )
 {
     MSIFEATURE *feature;

     LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
     {
         if (!strcmpW( argument, feature->Feature ) || !strcmpW( argument, szAll ))
         {
             if (feature->ActionRequest != INSTALLSTATE_LOCAL)
                 msi_set_property( package->db, szPreselected, szOne );
             MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_LOCAL );
         }
     }
     return ERROR_SUCCESS;
 }

 static UINT ControlEvent_Remove( MSIPACKAGE *package, LPCWSTR argument, msi_dialog *dialog )
 {
     MSIFEATURE *feature;

     LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
     {
         if (!strcmpW( argument, feature->Feature ) || !strcmpW( argument, szAll ))
         {
             if (feature->ActionRequest != INSTALLSTATE_ABSENT)
                 msi_set_property( package->db, szPreselected, szOne );
             MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_ABSENT );
         }
     }
     return ERROR_SUCCESS;
 }

 static UINT ControlEvent_AddSource( MSIPACKAGE *package, LPCWSTR argument, msi_dialog *dialog )
 {
     MSIFEATURE *feature;

     LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
     {
         if (!strcmpW( argument, feature->Feature ) || !strcmpW( argument, szAll ))
         {
             if (feature->ActionRequest != INSTALLSTATE_SOURCE)
                 msi_set_property( package->db, szPreselected, szOne );
             MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_SOURCE );
         }
     }
     return ERROR_SUCCESS;
 }

 static UINT ControlEvent_SetTargetPath(MSIPACKAGE* package, LPCWSTR argument,
                                    msi_dialog* dialog)
 {
     static const WCHAR szSelectionPath[] = {'S','e','l','e','c','t','i','o','n','P','a','t','h',0};
     LPWSTR path = msi_dup_property( package->db, argument );
     MSIRECORD *rec = MSI_CreateRecord( 1 );
     UINT r = ERROR_SUCCESS;

     MSI_RecordSetStringW( rec, 1, path );
     ControlEvent_FireSubscribedEvent( package, szSelectionPath, rec );
     if (path)
     {
         /* failure to set the path halts the executing of control events */
         r = MSI_SetTargetPathW(package, argument, path);
         msi_free(path);
     }
     msi_free(&rec->hdr);
     return r;
 }

 static UINT ControlEvent_Reset(MSIPACKAGE* package, LPCWSTR argument,
                                    msi_dialog* dialog)
 {
     msi_dialog_reset(dialog);
     return ERROR_SUCCESS;
 }

 /*
  * Subscribed events
  */
 static void free_subscriber( struct subscriber *sub )
 {
     msi_free(sub->event);
     msi_free(sub->control);
     msi_free(sub->attribute);
     msi_free(sub);
 }

 VOID ControlEvent_SubscribeToEvent( MSIPACKAGE *package, msi_dialog *dialog,
                                     LPCWSTR event, LPCWSTR control, LPCWSTR attribute )
 {
     struct subscriber *sub;

     TRACE("event %s control %s attribute %s\n", debugstr_w(event), debugstr_w(control), debugstr_w(attribute));

     LIST_FOR_EACH_ENTRY( sub, &package->subscriptions, struct subscriber, entry )
     {
         if (!strcmpiW( sub->event, event ) &&
             !strcmpiW( sub->control, control ) &&
             !strcmpiW( sub->attribute, attribute ))
         {
             TRACE("already subscribed\n");
             return;
         };
     }
     if (!(sub = msi_alloc( sizeof(*sub) ))) return;
     sub->dialog = dialog;
     sub->event = strdupW(event);
     sub->control = strdupW(control);
     sub->attribute = strdupW(attribute);
     list_add_tail( &package->subscriptions, &sub->entry );
 }

 VOID ControlEvent_FireSubscribedEvent( MSIPACKAGE *package, LPCWSTR event, MSIRECORD *rec )
 {
     struct subscriber *sub;

     TRACE("Firing event %s\n", debugstr_w(event));

     LIST_FOR_EACH_ENTRY( sub, &package->subscriptions, struct subscriber, entry )
     {
         if (strcmpiW( sub->event, event )) continue;
         msi_dialog_handle_event( sub->dialog, sub->control, sub->attribute, rec );
     }
 }

 VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog)
 {
     struct list *i, *t;
     struct subscriber *sub;

     LIST_FOR_EACH_SAFE( i, t, &package->subscriptions )
     {
         sub = LIST_ENTRY( i, struct subscriber, entry );

         if (strcmpW( msi_dialog_get_name( sub->dialog ), dialog ))
             continue;

         list_remove( &sub->entry );
         free_subscriber( sub );
     }
 }

 VOID ControlEvent_CleanupSubscriptions(MSIPACKAGE *package)
 {
     struct list *i, *t;
     struct subscriber *sub;

     LIST_FOR_EACH_SAFE( i, t, &package->subscriptions )
     {
         sub = LIST_ENTRY( i, struct subscriber, entry );

         list_remove( &sub->entry );
         free_subscriber( sub );
     }
 }

 /*
  * ACTION_DialogBox()
  *
  * Return ERROR_SUCCESS if dialog is process and ERROR_FUNCTION_FAILED
  * if the given parameter is not a dialog box
  */
 UINT ACTION_DialogBox( MSIPACKAGE* package, LPCWSTR szDialogName )
 {
     UINT r = ERROR_SUCCESS;

     if( package->next_dialog )
         ERR("Already a next dialog... ignoring it\n");
     package->next_dialog = NULL;

     /*
      * Dialogs are chained by filling in the next_dialog member
      *  of the package structure, then terminating the current dialog.
      *  The code below sees the next_dialog member set, and runs the
      *  next dialog.
      * We fall out of the loop below if we come across a modeless
      *  dialog, as it returns ERROR_IO_PENDING when we try to run
      *  its message loop.
      */
     r = event_do_dialog( package, szDialogName, NULL, TRUE );
     while( r == ERROR_SUCCESS && package->next_dialog )
     {
         LPWSTR name = package->next_dialog;

         package->next_dialog = NULL;
         r = event_do_dialog( package, name, NULL, TRUE );
         msi_free( name );
     }

     if( r == ERROR_IO_PENDING )
         r = ERROR_SUCCESS;

     return r;
 }

 static UINT ControlEvent_SetInstallLevel(MSIPACKAGE* package, LPCWSTR argument,
                                           msi_dialog* dialog)
 {
     int iInstallLevel = atolW(argument);

     TRACE("Setting install level: %i\n", iInstallLevel);

     return MSI_SetInstallLevel( package, iInstallLevel );
 }

 static UINT ControlEvent_DirectoryListUp(MSIPACKAGE *package, LPCWSTR argument,
                                          msi_dialog *dialog)
 {
     return msi_dialog_directorylist_up( dialog );
 }

 static UINT ControlEvent_ReinstallMode(MSIPACKAGE *package, LPCWSTR argument,
                                        msi_dialog *dialog)
 {
     return msi_set_property( package->db, szReinstallMode, argument );
 }

 static UINT ControlEvent_Reinstall( MSIPACKAGE *package, LPCWSTR argument,
                                     msi_dialog *dialog )
 {
     return msi_set_property( package->db, szReinstall, argument );
 }

 static UINT ControlEvent_ValidateProductID(MSIPACKAGE *package, LPCWSTR argument,
                                            msi_dialog *dialog)
 {
     LPWSTR key, template;
     UINT ret = ERROR_SUCCESS;

     template = msi_dup_property( package->db, szPIDTemplate );
     key = msi_dup_property( package->db, szPIDKEY );

     if (key && template)
     {
         FIXME( "partial stub: template %s key %s\n", debugstr_w(template), debugstr_w(key) );
         ret = msi_set_property( package->db, szProductID, key );
     }
     msi_free( template );
     msi_free( key );
     return ret;
 }

 static const WCHAR end_dialogW[] = {'E','n','d','D','i','a','l','o','g',0};
 static const WCHAR new_dialogW[] = {'N','e','w','D','i','a','l','o','g',0};
 static const WCHAR spawn_dialogW[] = {'S','p','a','w','n','D','i','a','l','o','g',0};
 static const WCHAR spawn_wait_dialogW[] = {'S','p','a','w','n','W','a','i','t','D','i','a','l','o','g',0};
 static const WCHAR do_actionW[] = {'D','o','A','c','t','i','o','n',0};
 static const WCHAR add_localW[] = {'A','d','d','L','o','c','a','l',0};
 static const WCHAR removeW[] = {'R','e','m','o','v','e',0};
 static const WCHAR add_sourceW[] = {'A','d','d','S','o','u','r','c','e',0};
 static const WCHAR set_target_pathW[] = {'S','e','t','T','a','r','g','e','t','P','a','t','h',0};
 static const WCHAR resetW[] = {'R','e','s','e','t',0};
 static const WCHAR set_install_levelW[] = {'S','e','t','I','n','s','t','a','l','l','L','e','v','e','l',0};
 static const WCHAR directory_list_upW[] = {'D','i','r','e','c','t','o','r','y','L','i','s','t','U','p',0};
 static const WCHAR selection_browseW[] = {'S','e','l','e','c','t','i','o','n','B','r','o','w','s','e',0};
 static const WCHAR reinstall_modeW[] = {'R','e','i','n','s','t','a','l','l','M','o','d','e',0};
 static const WCHAR reinstallW[] = {'R','e','i','n','s','t','a','l','l',0};
 static const WCHAR validate_product_idW[] = {'V','a','l','i','d','a','t','e','P','r','o','d','u','c','t','I','D',0};

 static const struct control_events control_events[] =
 {
     { end_dialogW, ControlEvent_EndDialog },
     { new_dialogW, ControlEvent_NewDialog },
     { spawn_dialogW, ControlEvent_SpawnDialog },
     { spawn_wait_dialogW, ControlEvent_SpawnWaitDialog },
     { do_actionW, ControlEvent_DoAction },
     { add_localW, ControlEvent_AddLocal },
     { removeW, ControlEvent_Remove },
     { add_sourceW, ControlEvent_AddSource },
     { set_target_pathW, ControlEvent_SetTargetPath },
     { resetW, ControlEvent_Reset },
     { set_install_levelW, ControlEvent_SetInstallLevel },
     { directory_list_upW, ControlEvent_DirectoryListUp },
     { selection_browseW, ControlEvent_SpawnDialog },
     { reinstall_modeW, ControlEvent_ReinstallMode },
     { reinstallW, ControlEvent_Reinstall },
     { validate_product_idW, ControlEvent_ValidateProductID },
     { NULL, NULL }
 };

 UINT ControlEvent_HandleControlEvent( MSIPACKAGE *package, LPCWSTR event,
                                       LPCWSTR argument, msi_dialog *dialog )
 {
     unsigned int i;

     TRACE("handling control event %s\n", debugstr_w(event));

     if (!event) return ERROR_SUCCESS;

     for (i = 0; control_events[i].event; i++)
     {
         if (!strcmpW( control_events[i].event, event ))
             return control_events[i].handler( package, argument, dialog );
     }
     FIXME("unhandled control event %s arg(%s)\n", debugstr_w(event), debugstr_w(argument));
     return ERROR_SUCCESS;
 }
	/*
	* Implementation of the Microsoft Installer (msi.dll)
	*
	* Copyright 2005 Aric Stewart for CodeWeavers
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#include <stdarg.h>
	#include <stdio.h>

	#include "windef.h"
	#include "winbase.h"
	#include "winerror.h"
	#include "winreg.h"
	#include "msi.h"
	#include "msipriv.h"

	#include "wine/debug.h"
	#include "wine/unicode.h"

	WINE_DEFAULT_DEBUG_CHANNEL(msi);

	typedef UINT (EVENTHANDLER)(MSIPACKAGE,LPCWSTR,msi_dialog *);

	struct control_events
	{
	const WCHAR *event;
	EVENTHANDLER handler;
	};

	struct subscriber {
	struct list entry;
	msi_dialog *dialog;
	LPWSTR event;
	LPWSTR control;
	LPWSTR attribute;
	};

	static UINT ControlEvent_HandleControlEvent(MSIPACKAGE , LPCWSTR, LPCWSTR, msi_dialog);

	/*
	* Create a dialog box and run it if it's modal
	*/
	static UINT event_do_dialog( MSIPACKAGE package, LPCWSTR name, msi_dialog parent, BOOL destroy_modeless )
	{
	msi_dialog *dialog;
	UINT r;

	/* create a new dialog */
	dialog = msi_dialog_create( package, name, parent,
	ControlEvent_HandleControlEvent );
	if( dialog )
	{
	/* kill the current modeless dialog */
	if( destroy_modeless && package->dialog )
	{
	msi_dialog_destroy( package->dialog );
	package->dialog = NULL;
	}

	/* modeless dialogs return an error message */
	r = msi_dialog_run_message_loop( dialog );
	if( r == ERROR_SUCCESS )
	msi_dialog_destroy( dialog );
	else
	package->dialog = dialog;
	}
	else
	r = ERROR_FUNCTION_FAILED;

	return r;
	}


	/*
	* End a modal dialog box
	*/
	static UINT ControlEvent_EndDialog(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	static const WCHAR szExit[] = {'E','x','i','t',0};
	static const WCHAR szRetry[] = {'R','e','t','r','y',0};
	static const WCHAR szIgnore[] = {'I','g','n','o','r','e',0};
	static const WCHAR szReturn[] = {'R','e','t','u','r','n',0};

	if (!strcmpW( argument, szExit ))
	package->CurrentInstallState = ERROR_INSTALL_USEREXIT;
	else if (!strcmpW( argument, szRetry ))
	package->CurrentInstallState = ERROR_INSTALL_SUSPEND;
	else if (!strcmpW( argument, szIgnore ))
	package->CurrentInstallState = ERROR_SUCCESS;
	else if (!strcmpW( argument, szReturn ))
	{
	msi_dialog *parent = msi_dialog_get_parent(dialog);
	msi_free(package->next_dialog);
	package->next_dialog = (parent) ? strdupW(msi_dialog_get_name(parent)) : NULL;
	package->CurrentInstallState = ERROR_SUCCESS;
	}
	else
	{
	ERR("Unknown argument string %s\n",debugstr_w(argument));
	package->CurrentInstallState = ERROR_FUNCTION_FAILED;
	}

	ControlEvent_CleanupDialogSubscriptions(package, msi_dialog_get_name( dialog ));
	msi_dialog_end_dialog( dialog );
	return ERROR_SUCCESS;
	}

	/*
	* transition from one modal dialog to another modal dialog
	*/
	static UINT ControlEvent_NewDialog(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog *dialog)
	{
	/* store the name of the next dialog, and signal this one to end */
	package->next_dialog = strdupW(argument);
	ControlEvent_CleanupSubscriptions(package);
	msi_dialog_end_dialog( dialog );
	return ERROR_SUCCESS;
	}

	/*
	* Create a new child dialog of an existing modal dialog
	*/
	static UINT ControlEvent_SpawnDialog(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog *dialog)
	{
	/* don't destroy a modeless dialogs that might be our parent */
	event_do_dialog( package, argument, dialog, FALSE );
	if( package->CurrentInstallState != ERROR_SUCCESS )
	msi_dialog_end_dialog( dialog );
	return ERROR_SUCCESS;
	}

	/*
	* Creates a dialog that remains up for a period of time
	* based on a condition
	*/
	static UINT ControlEvent_SpawnWaitDialog(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	FIXME("Doing Nothing\n");
	return ERROR_SUCCESS;
	}

	static UINT ControlEvent_DoAction(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	ACTION_PerformAction(package, argument, -1);
	return ERROR_SUCCESS;
	}

	static UINT ControlEvent_AddLocal( MSIPACKAGE package, LPCWSTR argument, msi_dialog dialog )
	{
	MSIFEATURE *feature;

	LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
	{
	if (!strcmpW( argument, feature->Feature ) \|\| !strcmpW( argument, szAll ))
	{
	if (feature->ActionRequest != INSTALLSTATE_LOCAL)
	msi_set_property( package->db, szPreselected, szOne );
	MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_LOCAL );
	}
	}
	return ERROR_SUCCESS;
	}

	static UINT ControlEvent_Remove( MSIPACKAGE package, LPCWSTR argument, msi_dialog dialog )
	{
	MSIFEATURE *feature;

	LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
	{
	if (!strcmpW( argument, feature->Feature ) \|\| !strcmpW( argument, szAll ))
	{
	if (feature->ActionRequest != INSTALLSTATE_ABSENT)
	msi_set_property( package->db, szPreselected, szOne );
	MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_ABSENT );
	}
	}
	return ERROR_SUCCESS;
	}

	static UINT ControlEvent_AddSource( MSIPACKAGE package, LPCWSTR argument, msi_dialog dialog )
	{
	MSIFEATURE *feature;

	LIST_FOR_EACH_ENTRY( feature, &package->features, MSIFEATURE, entry )
	{
	if (!strcmpW( argument, feature->Feature ) \|\| !strcmpW( argument, szAll ))
	{
	if (feature->ActionRequest != INSTALLSTATE_SOURCE)
	msi_set_property( package->db, szPreselected, szOne );
	MSI_SetFeatureStateW( package, feature->Feature, INSTALLSTATE_SOURCE );
	}
	}
	return ERROR_SUCCESS;
	}

	static UINT ControlEvent_SetTargetPath(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	static const WCHAR szSelectionPath[] = {'S','e','l','e','c','t','i','o','n','P','a','t','h',0};
	LPWSTR path = msi_dup_property( package->db, argument );
	MSIRECORD *rec = MSI_CreateRecord( 1 );
	UINT r = ERROR_SUCCESS;

	MSI_RecordSetStringW( rec, 1, path );
	ControlEvent_FireSubscribedEvent( package, szSelectionPath, rec );
	if (path)
	{
	/* failure to set the path halts the executing of control events */
	r = MSI_SetTargetPathW(package, argument, path);
	msi_free(path);
	}
	msi_free(&rec->hdr);
	return r;
	}

	static UINT ControlEvent_Reset(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	msi_dialog_reset(dialog);
	return ERROR_SUCCESS;
	}

	/*
	* Subscribed events
	*/
	static void free_subscriber( struct subscriber *sub )
	{
	msi_free(sub->event);
	msi_free(sub->control);
	msi_free(sub->attribute);
	msi_free(sub);
	}

	VOID ControlEvent_SubscribeToEvent( MSIPACKAGE package, msi_dialog dialog,
	LPCWSTR event, LPCWSTR control, LPCWSTR attribute )
	{
	struct subscriber *sub;

	TRACE("event %s control %s attribute %s\n", debugstr_w(event), debugstr_w(control), debugstr_w(attribute));

	LIST_FOR_EACH_ENTRY( sub, &package->subscriptions, struct subscriber, entry )
	{
	if (!strcmpiW( sub->event, event ) &&
	!strcmpiW( sub->control, control ) &&
	!strcmpiW( sub->attribute, attribute ))
	{
	TRACE("already subscribed\n");
	return;
	};
	}
	if (!(sub = msi_alloc( sizeof(*sub) ))) return;
	sub->dialog = dialog;
	sub->event = strdupW(event);
	sub->control = strdupW(control);
	sub->attribute = strdupW(attribute);
	list_add_tail( &package->subscriptions, &sub->entry );
	}

	VOID ControlEvent_FireSubscribedEvent( MSIPACKAGE package, LPCWSTR event, MSIRECORD rec )
	{
	struct subscriber *sub;

	TRACE("Firing event %s\n", debugstr_w(event));

	LIST_FOR_EACH_ENTRY( sub, &package->subscriptions, struct subscriber, entry )
	{
	if (strcmpiW( sub->event, event )) continue;
	msi_dialog_handle_event( sub->dialog, sub->control, sub->attribute, rec );
	}
	}

	VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog)
	{
	struct list i, t;
	struct subscriber *sub;

	LIST_FOR_EACH_SAFE( i, t, &package->subscriptions )
	{
	sub = LIST_ENTRY( i, struct subscriber, entry );

	if (strcmpW( msi_dialog_get_name( sub->dialog ), dialog ))
	continue;

	list_remove( &sub->entry );
	free_subscriber( sub );
	}
	}

	VOID ControlEvent_CleanupSubscriptions(MSIPACKAGE *package)
	{
	struct list i, t;
	struct subscriber *sub;

	LIST_FOR_EACH_SAFE( i, t, &package->subscriptions )
	{
	sub = LIST_ENTRY( i, struct subscriber, entry );

	list_remove( &sub->entry );
	free_subscriber( sub );
	}
	}

	/*
	* ACTION_DialogBox()
	*
	* Return ERROR_SUCCESS if dialog is process and ERROR_FUNCTION_FAILED
	* if the given parameter is not a dialog box
	*/
	UINT ACTION_DialogBox( MSIPACKAGE* package, LPCWSTR szDialogName )
	{
	UINT r = ERROR_SUCCESS;

	if( package->next_dialog )
	ERR("Already a next dialog... ignoring it\n");
	package->next_dialog = NULL;

	/*
	* Dialogs are chained by filling in the next_dialog member
	* of the package structure, then terminating the current dialog.
	* The code below sees the next_dialog member set, and runs the
	* next dialog.
	* We fall out of the loop below if we come across a modeless
	* dialog, as it returns ERROR_IO_PENDING when we try to run
	* its message loop.
	*/
	r = event_do_dialog( package, szDialogName, NULL, TRUE );
	while( r == ERROR_SUCCESS && package->next_dialog )
	{
	LPWSTR name = package->next_dialog;

	package->next_dialog = NULL;
	r = event_do_dialog( package, name, NULL, TRUE );
	msi_free( name );
	}

	if( r == ERROR_IO_PENDING )
	r = ERROR_SUCCESS;

	return r;
	}

	static UINT ControlEvent_SetInstallLevel(MSIPACKAGE* package, LPCWSTR argument,
	msi_dialog* dialog)
	{
	int iInstallLevel = atolW(argument);

	TRACE("Setting install level: %i\n", iInstallLevel);

	return MSI_SetInstallLevel( package, iInstallLevel );
	}

	static UINT ControlEvent_DirectoryListUp(MSIPACKAGE *package, LPCWSTR argument,
	msi_dialog *dialog)
	{
	return msi_dialog_directorylist_up( dialog );
	}

	static UINT ControlEvent_ReinstallMode(MSIPACKAGE *package, LPCWSTR argument,
	msi_dialog *dialog)
	{
	return msi_set_property( package->db, szReinstallMode, argument );
	}

	static UINT ControlEvent_Reinstall( MSIPACKAGE *package, LPCWSTR argument,
	msi_dialog *dialog )
	{
	return msi_set_property( package->db, szReinstall, argument );
	}

	static UINT ControlEvent_ValidateProductID(MSIPACKAGE *package, LPCWSTR argument,
	msi_dialog *dialog)
	{
	LPWSTR key, template;
	UINT ret = ERROR_SUCCESS;

	template = msi_dup_property( package->db, szPIDTemplate );
	key = msi_dup_property( package->db, szPIDKEY );

	if (key && template)
	{
	FIXME( "partial stub: template %s key %s\n", debugstr_w(template), debugstr_w(key) );
	ret = msi_set_property( package->db, szProductID, key );
	}
	msi_free( template );
	msi_free( key );
	return ret;
	}

	static const WCHAR end_dialogW[] = {'E','n','d','D','i','a','l','o','g',0};
	static const WCHAR new_dialogW[] = {'N','e','w','D','i','a','l','o','g',0};
	static const WCHAR spawn_dialogW[] = {'S','p','a','w','n','D','i','a','l','o','g',0};
	static const WCHAR spawn_wait_dialogW[] = {'S','p','a','w','n','W','a','i','t','D','i','a','l','o','g',0};
	static const WCHAR do_actionW[] = {'D','o','A','c','t','i','o','n',0};
	static const WCHAR add_localW[] = {'A','d','d','L','o','c','a','l',0};
	static const WCHAR removeW[] = {'R','e','m','o','v','e',0};
	static const WCHAR add_sourceW[] = {'A','d','d','S','o','u','r','c','e',0};
	static const WCHAR set_target_pathW[] = {'S','e','t','T','a','r','g','e','t','P','a','t','h',0};
	static const WCHAR resetW[] = {'R','e','s','e','t',0};
	static const WCHAR set_install_levelW[] = {'S','e','t','I','n','s','t','a','l','l','L','e','v','e','l',0};
	static const WCHAR directory_list_upW[] = {'D','i','r','e','c','t','o','r','y','L','i','s','t','U','p',0};
	static const WCHAR selection_browseW[] = {'S','e','l','e','c','t','i','o','n','B','r','o','w','s','e',0};
	static const WCHAR reinstall_modeW[] = {'R','e','i','n','s','t','a','l','l','M','o','d','e',0};
	static const WCHAR reinstallW[] = {'R','e','i','n','s','t','a','l','l',0};
	static const WCHAR validate_product_idW[] = {'V','a','l','i','d','a','t','e','P','r','o','d','u','c','t','I','D',0};

	static const struct control_events control_events[] =
	{
	{ end_dialogW, ControlEvent_EndDialog },
	{ new_dialogW, ControlEvent_NewDialog },
	{ spawn_dialogW, ControlEvent_SpawnDialog },
	{ spawn_wait_dialogW, ControlEvent_SpawnWaitDialog },
	{ do_actionW, ControlEvent_DoAction },
	{ add_localW, ControlEvent_AddLocal },
	{ removeW, ControlEvent_Remove },
	{ add_sourceW, ControlEvent_AddSource },
	{ set_target_pathW, ControlEvent_SetTargetPath },
	{ resetW, ControlEvent_Reset },
	{ set_install_levelW, ControlEvent_SetInstallLevel },
	{ directory_list_upW, ControlEvent_DirectoryListUp },
	{ selection_browseW, ControlEvent_SpawnDialog },
	{ reinstall_modeW, ControlEvent_ReinstallMode },
	{ reinstallW, ControlEvent_Reinstall },
	{ validate_product_idW, ControlEvent_ValidateProductID },
	{ NULL, NULL }
	};

	UINT ControlEvent_HandleControlEvent( MSIPACKAGE *package, LPCWSTR event,
	LPCWSTR argument, msi_dialog *dialog )
	{
	unsigned int i;

	TRACE("handling control event %s\n", debugstr_w(event));

	if (!event) return ERROR_SUCCESS;

	for (i = 0; control_events[i].event; i++)
	{
	if (!strcmpW( control_events[i].event, event ))
	return control_events[i].handler( package, argument, dialog );
	}
	FIXME("unhandled control event %s arg(%s)\n", debugstr_w(event), debugstr_w(argument));
	return ERROR_SUCCESS;
	}