gecko-dev/xpinstall/cleanup/InstallCleanup.cpp

141 строка
4.4 KiB
C++

/*
* 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 Netscape Communications Corp. are
* Copyright (C) 1998, 1999, 2000, 2001 Netscape Communications Corp. All
* Rights Reserved.
*
* Contributor(s):
* Don Bragg <dbragg@netscape.com>
*/
#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;
}