/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** 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): * Sean Su * * 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 "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); CharLowerBuff(szKeyLower, sizeof(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); CharUpperBuff(szAppPathName, dwAppPathNameSize); 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) { CharUpperBuff(szBuf, sizeof(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); }