From 93d627691da3569dd0582cc5ebaf425f4e8087d2 Mon Sep 17 00:00:00 2001
From: George Hazan <george.hazan@gmail.com>
Date: Sun, 29 Jul 2012 07:35:57 +0000
Subject: read-only mode for databases

git-svn-id: http://svn.miranda-ng.org/main/trunk@1237 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
---
 plugins/Db3x_mmap/src/dbevents.cpp |  4 +---
 plugins/Db3x_mmap/src/dbintf.cpp   | 15 ++++++++++-----
 plugins/Db3x_mmap/src/dbintf.h     |  2 +-
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/plugins/Db3x_mmap/src/dbevents.cpp b/plugins/Db3x_mmap/src/dbevents.cpp
index ef72fd3ebc..e6681d6a75 100644
--- a/plugins/Db3x_mmap/src/dbevents.cpp
+++ b/plugins/Db3x_mmap/src/dbevents.cpp
@@ -23,8 +23,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "commonheaders.h"
 
-extern BOOL m_safetyMode;
-
 DWORD GetModuleNameOfs(const char *szName);
 char *GetModuleNameByOfs(DWORD ofs);
 
@@ -47,7 +45,7 @@ STDMETHODIMP_(HANDLE) CDb3Base::AddEvent(HANDLE hContact, DBEVENTINFO *dbei)
 	if (NotifyEventHooks(hEventFilterAddedEvent, (WPARAM)hContact, (LPARAM)dbei))
 		return 0;
 
-	BOOL neednotify;
+	bool neednotify;
 	mir_cslockfull lck(m_csDbAccess);
 
 	DWORD ofsContact = (hContact == 0) ? m_dbHeader.ofsUser : (DWORD)hContact;
diff --git a/plugins/Db3x_mmap/src/dbintf.cpp b/plugins/Db3x_mmap/src/dbintf.cpp
index 84ddc64468..3decb9bc4b 100644
--- a/plugins/Db3x_mmap/src/dbintf.cpp
+++ b/plugins/Db3x_mmap/src/dbintf.cpp
@@ -52,7 +52,8 @@ static int OfsCompare(const ModuleName *mn1, const ModuleName *mn2 )
 
 CDb3Base::CDb3Base(const TCHAR* tszFileName) :
 	m_hDbFile(INVALID_HANDLE_VALUE),
-	m_safetyMode(TRUE),
+	m_safetyMode(true),
+	m_bReadOnly(true),
 	m_lSettings(100, stringCompare),
 	m_lContacts(50, LIST<DBCachedContactValueList>::FTSortFunc(HandleKeySort)),
 	m_lGlobalSettings(50, compareGlobals),
@@ -98,9 +99,11 @@ CDb3Base::~CDb3Base()
 		CloseHandle(m_hMap);
 
 	// update profile last modified time
-	DWORD bytesWritten;
-	SetFilePointer(m_hDbFile, 0, NULL, FILE_BEGIN);
-	WriteFile(m_hDbFile, &dbSignature, 1, &bytesWritten, NULL);
+	if (!m_bReadOnly) {
+		DWORD bytesWritten;
+		SetFilePointer(m_hDbFile, 0, NULL, FILE_BEGIN);
+		WriteFile(m_hDbFile, &dbSignature, 1, &bytesWritten, NULL);
+	}
 	CloseHandle(m_hDbFile);
 
 	DeleteCriticalSection(&m_csDbAccess);
@@ -126,6 +129,8 @@ int CDb3Base::Load(bool bSkipInit)
 		if (InitCache()) return 1;
 		if (InitModuleNames()) return 1;
 
+		m_bReadOnly = false;
+
 		hContactDeletedEvent = CreateHookableEvent(ME_DB_CONTACT_DELETED);
 		hContactAddedEvent = CreateHookableEvent(ME_DB_CONTACT_ADDED);
 		hSettingChangeEvent = CreateHookableEvent(ME_DB_CONTACT_SETTINGCHANGED);
@@ -146,7 +151,7 @@ int CDb3Base::Create()
 STDMETHODIMP_(void) CDb3Base::SetCacheSafetyMode(BOOL bIsSet)
 {
 	{	mir_cslock lck(m_csDbAccess);
-		m_safetyMode = bIsSet;
+		m_safetyMode = bIsSet != 0;
 	}
 	DBFlush(1);
 }
diff --git a/plugins/Db3x_mmap/src/dbintf.h b/plugins/Db3x_mmap/src/dbintf.h
index f3d04d0959..3a744427a8 100644
--- a/plugins/Db3x_mmap/src/dbintf.h
+++ b/plugins/Db3x_mmap/src/dbintf.h
@@ -243,7 +243,7 @@ protected:
 	HANDLE   m_hDbFile;
 	DBHeader m_dbHeader;
 	DWORD    m_ChunkSize;
-	BOOL     m_safetyMode;
+	bool     m_safetyMode, m_bReadOnly;
 	
 	////////////////////////////////////////////////////////////////////////////
 	// database stuff
-- 
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