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gecko-dev/xpinstall/wizard/windows/uninstall/rdi.c

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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* 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):
* Sean Su <ssu@netscape.com>
*/
#include "extern.h"
#include "parser.h"
#include "extra.h"
#include "ifuncns.h"
HKEY hkUnreadMailRootKey = HKEY_CURRENT_USER;
char szUnreadMailKey[] = "Software\\Microsoft\\Windows\\CurrentVersion\\UnreadMail";
char szMozillaDesktopKey[] = "Software\\Mozilla\\Desktop";
char szRDISection[] = "Restore Desktop Integration";
/* structure for use with UnreadMail registry keys */
typedef struct sKeyNode skn;
struct sKeyNode
{
char szKey[MAX_BUF];
skn *Next;
skn *Prev;
};
/* Function that creates an instance of skn */
skn *CreateSknNode()
{
skn *sknNode;
if((sknNode = NS_GlobalAlloc(sizeof(struct sKeyNode))) == NULL)
exit(1);
sknNode->Next = sknNode;
sknNode->Prev = sknNode;
return(sknNode);
}
/* Function that inserts a skn structure into a linked list */
void SknNodeInsert(skn **sknHead, skn *sknTemp)
{
if(*sknHead == NULL)
{
*sknHead = sknTemp;
(*sknHead)->Next = *sknHead;
(*sknHead)->Prev = *sknHead;
}
else
{
sknTemp->Next = *sknHead;
sknTemp->Prev = (*sknHead)->Prev;
(*sknHead)->Prev->Next = sknTemp;
(*sknHead)->Prev = sknTemp;
}
}
/* Function that removes a skn structure from a skn linked list.
* and frees memory. */
void SknNodeDelete(skn *sknTemp)
{
if(sknTemp != NULL)
{
sknTemp->Next->Prev = sknTemp->Prev;
sknTemp->Prev->Next = sknTemp->Next;
sknTemp->Next = NULL;
sknTemp->Prev = NULL;
FreeMemory(&sknTemp);
}
}
/* Function that traverses a skn linked list and deletes each node. */
void DeInitSknList(skn **sknHeadNode)
{
skn *sknTemp;
if(*sknHeadNode == NULL)
return;
sknTemp = (*sknHeadNode)->Prev;
while(sknTemp != *sknHeadNode)
{
SknNodeDelete(sknTemp);
sknTemp = (*sknHeadNode)->Prev;
}
SknNodeDelete(sknTemp);
*sknHeadNode = NULL;
}
/* Function to check if [windir]\mapi32.dll belongs to mozilla or not */
int IsMapiMozMapi(BOOL *bIsMozMapi)
{
HINSTANCE hLib;
char szMapiFilePath[MAX_BUF];
int iRv = WIZ_ERROR_UNDEFINED;
int (PASCAL *GetMapiDllVersion)(void);
char szMapiVersionKey[] = "MAPI version installed";
char szBuf[MAX_BUF];
int iMapiVersionInstalled;
/* Get the Mapi version that we installed from uninstall.ini.
* If there is none set, then return WIZ_ERROR_UNDEFINED. */
GetPrivateProfileString(szRDISection, szMapiVersionKey, "", szBuf, sizeof(szBuf), szFileIniUninstall);
if(*szBuf == '\0')
return(iRv);
iMapiVersionInstalled = atoi(szBuf);
if(GetSystemDirectory(szMapiFilePath, sizeof(szMapiFilePath)) == 0)
return(iRv);
AppendBackSlash(szMapiFilePath, sizeof(szMapiFilePath));
lstrcat(szMapiFilePath, "Mapi32.dll");
if(!FileExists(szMapiFilePath))
iRv = WIZ_FILE_NOT_FOUND;
else if((hLib = LoadLibrary(szMapiFilePath)) != NULL)
{
iRv = WIZ_OK;
*bIsMozMapi = FALSE;
if(((FARPROC)GetMapiDllVersion = GetProcAddress(hLib, "GetMapiDllVersion")) != NULL)
{
if(iMapiVersionInstalled == GetMapiDllVersion())
*bIsMozMapi = TRUE;
}
FreeLibrary(hLib);
}
return(iRv);
}
/* This function parses takes as input a registry key path string beginning
* with HKEY_XXXX (root key) and parses out the sub key path and the root
* key.
*
* It returns the root key as HKEY and the sub key path as char* */
HKEY GetRootKeyAndSubKeyPath(char *szInKeyPath, char *szOutSubKeyPath, DWORD dwOutSubKeyPathSize)
{
char *ptr = szInKeyPath;
HKEY hkRootKey = HKEY_CLASSES_ROOT;
ZeroMemory(szOutSubKeyPath, dwOutSubKeyPathSize);
if(ptr == NULL)
return(hkRootKey);
/* search for the first '\' char */
while(*ptr && (*ptr != '\\'))
++ptr;
if((*ptr == '\0') ||
(*ptr == '\\'))
{
BOOL bPtrModified = FALSE;
if(*ptr == '\\')
{
*ptr = '\0';
bPtrModified = TRUE;
}
hkRootKey = ParseRootKey(szInKeyPath);
if(bPtrModified)
*ptr = '\\';
if((*ptr != '\0') &&
((unsigned)lstrlen(ptr + 1) + 1 <= dwOutSubKeyPathSize))
/* copy only the sub key path after the root key string */
lstrcpy(szOutSubKeyPath, ptr + 1);
}
return(hkRootKey);
}
/* This function checks for nonprintable characters.
* If at least one is found in the input string, it will return TRUE,
* else FALSE */
BOOL CheckForNonPrintableChars(char *szInString)
{
int i;
int iLen;
BOOL bFoundNonPrintableChar = FALSE;
if(!szInString)
return(TRUE);
iLen = lstrlen(szInString);
for(i = 0; i < iLen; i++)
{
if(!isprint(szInString[i]))
{
bFoundNonPrintableChar = TRUE;
break;
}
}
return(bFoundNonPrintableChar);
}
/* This function checks to see if the key path is a ddeexec path. If so,
* it then checks for non printable chars */
BOOL DdeexecCheck(char *szKey, char *szValue)
{
char szKddeexec[] = "shell\\open\\ddeexec";
char szKeyLower[MAX_BUF];
BOOL bPass = TRUE;
lstrcpy(szKeyLower, szKey);
strlwr(szKeyLower);
if(strstr(szKeyLower, szKddeexec) && CheckForNonPrintableChars(szValue))
bPass = FALSE;
return(bPass);
}
/* This function enumerates HKEY_LOCAL_MACHINE\Sofware\Mozilla\Desktop for
* variable information on what desktop integration was done by the
* browser/mail client.
*
* These variables found cannot be deleted or modified until the enumeration
* is complete, or else this function will fail! */
void RestoreDesktopIntegration()
{
char szVarName[MAX_BUF];
char szValue[MAX_BUF];
char szSubKey[MAX_BUF];
HKEY hkHandle;
DWORD dwIndex;
DWORD dwSubKeySize;
DWORD dwTotalValues;
char szKHKEY[] = "HKEY";
char szKisHandling[] = "isHandling";
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, szMozillaDesktopKey, 0, KEY_READ|KEY_WRITE, &hkHandle) != ERROR_SUCCESS)
return;
dwTotalValues = 0;
RegQueryInfoKey(hkHandle, NULL, NULL, NULL, NULL, NULL, NULL, &dwTotalValues, NULL, NULL, NULL, NULL);
for(dwIndex = 0; dwIndex < dwTotalValues; dwIndex++)
{
/* Enumerate thru all the vars found within the Mozilla Desktop key */
dwSubKeySize = sizeof(szVarName);
if(RegEnumValue(hkHandle, dwIndex, szVarName, &dwSubKeySize, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
{
if(strnicmp(szVarName, szKHKEY, lstrlen(szKHKEY)) == 0)
{
HKEY hkRootKey;
hkRootKey = GetRootKeyAndSubKeyPath(szVarName, szSubKey, sizeof(szSubKey));
if(*szSubKey != '\0')
{
GetWinReg(HKEY_LOCAL_MACHINE, szMozillaDesktopKey, szVarName, szValue, sizeof(szValue));
if(*szValue != '\0')
{
/* Due to a bug in the browser code that saves the previous HKEY
* value it's trying to replace as garbage chars, we need to try
* to detect it. If found, do not restore it. This bug only
* happens for the saved ddeexec keys. */
if(DdeexecCheck(szSubKey, szValue))
{
/* Restore the previous saved setting here */
SetWinReg(hkRootKey,
szSubKey,
NULL,
REG_SZ,
szValue,
lstrlen(szValue));
}
}
else
/* if the saved value is an empty string, then
* delete the default var for this key */
DeleteWinRegValue(hkRootKey,
szSubKey,
szValue);
}
}
}
}
RegCloseKey(hkHandle);
return;
}
void RestoreMozMapi()
{
char szMozMapiBackupFile[MAX_BUF];
BOOL bFileIsMozMapi = FALSE;
GetWinReg(HKEY_LOCAL_MACHINE,
szMozillaDesktopKey,
"Mapi_backup_dll",
szMozMapiBackupFile,
sizeof(szMozMapiBackupFile));
/* If the windows registry Mapi_backup_dll var name does not exist,
* then we're not the default mail handler for the system.
*
* If the backup mapi file does not exist for some reason, then
* there's no way to restore the previous saved mapi32.dll file. */
if((*szMozMapiBackupFile == '\0') || !FileExists(szMozMapiBackupFile))
return;
/* A TRUE for bFileIsMozMapi indicates that we need to restore
* the backed up mapi32.dll (if one was backed up).
*
* bFileIsMozMapi is TRUE in the following conditions:
* * mapi32.dll is not found
* * mapi32.dll loads and GetMapiDllVersion() exists
* _and_ returns the same version indicated in the uninstall.ini file:
*
* [Restore Desktop Integration]
* Mapi version installed=94
*
* 94 indicates version 0.9.4 */
if(IsMapiMozMapi(&bFileIsMozMapi) == WIZ_FILE_NOT_FOUND)
bFileIsMozMapi = TRUE;
if(bFileIsMozMapi)
{
char szDestinationFilename[MAX_BUF];
/* Get the Windows System (or System32 under NT) directory */
if(GetSystemDirectory(szDestinationFilename, sizeof(szDestinationFilename)))
{
/* Copy the backup filename into the normal Mapi32.dll filename */
AppendBackSlash(szDestinationFilename, sizeof(szDestinationFilename));
lstrcat(szDestinationFilename, "Mapi32.dll");
CopyFile(szMozMapiBackupFile, szDestinationFilename, FALSE);
}
}
/* Delete the backup Mapi filename */
FileDelete(szMozMapiBackupFile);
}
BOOL UndoDesktopIntegration(void)
{
char szMozillaKey[] = "Software\\Mozilla";
char szBuf[MAX_BUF];
/* Check to see if uninstall.ini has indicated to restore
* the destktop integration performed by the browser/mail */
GetPrivateProfileString(szRDISection, "Enabled", "", szBuf, sizeof(szBuf), szFileIniUninstall);
if(lstrcmpi(szBuf, "TRUE") == 0)
{
RestoreDesktopIntegration();
RestoreMozMapi();
DeleteWinRegKey(HKEY_LOCAL_MACHINE, szMozillaDesktopKey, TRUE);
DeleteWinRegKey(HKEY_LOCAL_MACHINE, szMozillaKey, FALSE);
}
return(0);
}
/* Function that retrieves the app name (including path) that is going to be
* uninstalled. The return string is in upper case. */
int GetUninstallAppPathName(char *szAppPathName, DWORD dwAppPathNameSize)
{
char szKey[MAX_BUF];
HKEY hkRoot;
if(*ugUninstall.szUserAgent != '\0')
{
hkRoot = ugUninstall.hWrMainRoot;
lstrcpy(szKey, ugUninstall.szWrMainKey);
AppendBackSlash(szKey, sizeof(szKey));
lstrcat(szKey, ugUninstall.szUserAgent);
AppendBackSlash(szKey, sizeof(szKey));
lstrcat(szKey, "Main");
}
else
{
return(CMI_APP_PATHNAME_NOT_FOUND);
}
GetWinReg(hkRoot, szKey, "PathToExe", szAppPathName, dwAppPathNameSize);
strupr(szAppPathName);
return(CMI_OK);
}
/* Function to delete the UnreadMail keys that belong to the app that is being
* uninstalled. The skn list that is passed in should only contain UnreadMail
* subkeys to be deleted. */
void DeleteUnreadMailKeys(skn *sknHeadNode)
{
skn *sknTempNode;
char szUnreadMailDeleteKey[MAX_BUF];
DWORD dwLength;
if(sknHeadNode == NULL)
return;
sknTempNode = sknHeadNode;
do
{
/* build the full UnreadMail key to be deleted */
dwLength = sizeof(szUnreadMailDeleteKey) > lstrlen(szUnreadMailKey) ?
lstrlen(szUnreadMailKey) + 1: sizeof(szUnreadMailDeleteKey);
lstrcpyn(szUnreadMailDeleteKey, szUnreadMailKey, dwLength);
AppendBackSlash(szUnreadMailDeleteKey, sizeof(szUnreadMailDeleteKey));
if((unsigned)(lstrlen(sknTempNode->szKey) + 1) <
(sizeof(szUnreadMailDeleteKey) - lstrlen(szUnreadMailKey) + 1))
{
lstrcat(szUnreadMailDeleteKey, sknTempNode->szKey);
/* delete the UnreadMail key (even if it has subkeys) */
DeleteWinRegKey(hkUnreadMailRootKey, szUnreadMailDeleteKey, TRUE);
}
/* get the next key to delete */
sknTempNode = sknTempNode->Next;
}while(sknTempNode != sknHeadNode);
}
/* Function that builds a list of UnreadMail subkey names that only belong to
* the app that is being uninstalled. The list is a linked list of skn
* structures. */
BOOL GetUnreadMailKeyList(char *szUninstallAppPathName, skn **sknWinRegKeyList)
{
HKEY hkSubKeyHandle;
HKEY hkHandle;
DWORD dwErr = ERROR_SUCCESS;
DWORD dwTotalSubKeys;
DWORD dwSubKeySize;
DWORD dwIndex;
DWORD dwBufSize;
BOOL bFoundAtLeastOne = FALSE;
char szSubKey[MAX_BUF];
char szBuf[MAX_BUF];
char szNewKey[MAX_BUF];
skn *sknTempNode;
/* open the UnreadMail key so we can enumerate its subkeys */
dwErr = RegOpenKeyEx(hkUnreadMailRootKey,
szUnreadMailKey,
0,
KEY_READ|KEY_QUERY_VALUE,
&hkHandle);
if(dwErr == ERROR_SUCCESS)
{
dwTotalSubKeys = 0;
RegQueryInfoKey(hkHandle,
NULL,
NULL,
NULL,
&dwTotalSubKeys,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL);
if(dwTotalSubKeys != 0)
{
dwIndex = 0;
do
{
/* For each UnreadMail subkey, parse it's 'Application' var name for
* the app we're uninstalling (full path). Compare against both long
* path name and short path name. If match found, add to linked list
* of skn structures.
*
* No key deletion is performed at this time! */
sknTempNode = NULL; /* reset temporaty node pointer */
dwSubKeySize = sizeof(szSubKey);
if((dwErr = RegEnumKeyEx(hkHandle,
dwIndex,
szSubKey,
&dwSubKeySize,
NULL,
NULL,
NULL,
NULL)) == ERROR_SUCCESS)
{
lstrcpy(szNewKey, szUnreadMailKey);
AppendBackSlash(szNewKey, sizeof(szNewKey));
lstrcat(szNewKey, szSubKey);
if(RegOpenKeyEx(hkUnreadMailRootKey,
szNewKey,
0,
KEY_READ,
&hkSubKeyHandle) == ERROR_SUCCESS)
{
dwBufSize = sizeof(szBuf);
if(RegQueryValueEx(hkSubKeyHandle,
"Application",
NULL,
NULL,
szBuf,
&dwBufSize) == ERROR_SUCCESS)
{
strupr(szBuf);
if(strstr(szBuf, szUninstallAppPathName) != NULL)
{
bFoundAtLeastOne = TRUE;
sknTempNode = CreateSknNode();
lstrcpyn(sknTempNode->szKey, szSubKey, dwSubKeySize + 1);
}
else
{
char szUninstallAppPathNameShort[MAX_BUF];
GetShortPathName(szUninstallAppPathName,
szUninstallAppPathNameShort,
sizeof(szUninstallAppPathNameShort));
if(strstr(szBuf, szUninstallAppPathNameShort) != NULL)
{
bFoundAtLeastOne = TRUE;
sknTempNode = CreateSknNode();
lstrcpyn(sknTempNode->szKey, szSubKey, dwSubKeySize + 1);
}
}
}
RegCloseKey(hkSubKeyHandle);
}
}
if(sknTempNode)
SknNodeInsert(sknWinRegKeyList, sknTempNode);
++dwIndex;
} while(dwErr != ERROR_NO_MORE_ITEMS);
}
RegCloseKey(hkHandle);
}
return(bFoundAtLeastOne);
}
/* Main function that deals with cleaning up the UnreadMail subkeys belonging
* to the app were currently uninstalling. */
int CleanupMailIntegration(void)
{
char szCMISection[] = "Cleanup Mail Integration";
char szUninstallApp[MAX_BUF];
char szBuf[MAX_BUF];
skn *sknWinRegKeyList = NULL;
/* Check to see if uninstall.ini has indicated to cleanup
* the mail integration performed by mail */
GetPrivateProfileString(szCMISection,
"Enabled",
"",
szBuf,
sizeof(szBuf),
szFileIniUninstall);
if(lstrcmpi(szBuf, "TRUE") != 0)
return(CMI_OK);
/* Get the full app name we're going to uninstall */
if(GetUninstallAppPathName(szUninstallApp, sizeof(szUninstallApp)) != CMI_OK)
return(CMI_APP_PATHNAME_NOT_FOUND);
/* Build a list of UnreadMail subkeys that needs to be deleted */
if(GetUnreadMailKeyList(szUninstallApp, &sknWinRegKeyList))
/* Delete the UnreadMail subkeys using the list built by
* GetUnreadMailKeyList() */
DeleteUnreadMailKeys(sknWinRegKeyList);
/* Clean up the linked list */
DeInitSknList(&sknWinRegKeyList);
return(CMI_OK);
}
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