gecko-dev/xpinstall/cleanup/InstallCleanup.cpp

156 строки
5.3 KiB
C++

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Navigator.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Don Bragg <dbragg@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "InstallCleanup.h"
int PerformScheduledTasks(HREG reg)
{
int deleteComplete = DONE;
int replaceComplete = DONE;
deleteComplete = DeleteScheduledFiles( reg );
replaceComplete = ReplaceScheduledFiles( reg );
if ((deleteComplete == DONE) && (replaceComplete == DONE))
return DONE;
else
return TRY_LATER;
}
//----------------------------------------------------------------------------
// ReplaceScheduledFiles
//----------------------------------------------------------------------------
int ReplaceScheduledFiles( HREG reg )
{
RKEY key;
int rv = DONE;
/* replace files if any listed */
if (REGERR_OK == NR_RegGetKey(reg,ROOTKEY_PRIVATE,REG_REPLACE_LIST_KEY,&key))
{
char keyname[MAXREGNAMELEN];
char doomedFile[MAXREGPATHLEN];
char srcFile[MAXREGPATHLEN];
uint32 bufsize;
REGENUM state = 0;
while (REGERR_OK == NR_RegEnumSubkeys( reg, key, &state,
keyname, sizeof(keyname), REGENUM_CHILDREN))
{
bufsize = sizeof(srcFile);
REGERR err1 = NR_RegGetEntry( reg, (RKEY)state,
REG_REPLACE_SRCFILE, &srcFile, &bufsize);
bufsize = sizeof(doomedFile);
REGERR err2 = NR_RegGetEntry( reg, (RKEY)state,
REG_REPLACE_DESTFILE, &doomedFile, &bufsize);
if ( err1 == REGERR_OK && err2 == REGERR_OK )
{
int result = NativeReplaceFile( srcFile, doomedFile );
if (result == DONE)
{
// This one is done
NR_RegDeleteKey( reg, key, keyname );
}
}
}
/* delete list node if empty */
state = 0;
if (REGERR_NOMORE == NR_RegEnumSubkeys( reg, key, &state, keyname,
sizeof(keyname), REGENUM_CHILDREN ))
{
NR_RegDeleteKey(reg, ROOTKEY_PRIVATE, REG_REPLACE_LIST_KEY);
rv = DONE;
}
else
{
rv = TRY_LATER;
}
}
return rv;
}
//----------------------------------------------------------------------------
// DeleteScheduledFiles
//----------------------------------------------------------------------------
int DeleteScheduledFiles( HREG reg )
{
REGERR err;
RKEY key;
REGENUM state = 0;
int rv = DONE;
/* perform scheduled file deletions */
if (REGERR_OK == NR_RegGetKey(reg,ROOTKEY_PRIVATE,REG_DELETE_LIST_KEY,&key))
{
// the delete key exists, so we loop through its children
// and try to delete all the listed files
char namebuf[MAXREGNAMELEN];
char valbuf[MAXREGPATHLEN];
while (REGERR_OK == NR_RegEnumEntries( reg, key, &state, namebuf,
sizeof(namebuf), 0 ) )
{
uint32 bufsize = sizeof(valbuf); // gets changed, must reset
err = NR_RegGetEntry( reg, key, namebuf, valbuf, &bufsize );
if ( err == REGERR_OK )
{
rv = NativeDeleteFile(valbuf);
if (rv == DONE)
NR_RegDeleteEntry( reg, key, namebuf);
}
}
/* delete list node if empty */
state = 0;
err = NR_RegEnumEntries(reg, key, &state, namebuf, sizeof(namebuf), 0);
if ( err == REGERR_NOMORE )
{
NR_RegDeleteKey(reg, ROOTKEY_PRIVATE, REG_DELETE_LIST_KEY);
rv = DONE;
}
else
{
rv = TRY_LATER;
}
}
return rv;
}