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376 lines
16 KiB
376 lines
16 KiB
#ifndef __VROOT_H__
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#define __VROOT_H__
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#include <dbgtrace.h>
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#include <iadmw.h>
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#include <mddefw.h>
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#include <tflist.h>
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#include <rwnew.h>
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#include <refptr2.h>
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#include <listmacr.h>
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#define MAX_VROOT_PATH MAX_PATH + 1
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class CVRootTable;
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#define VROOT_GOOD_SIG 'TOOR'
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#define VROOT_BAD_SIG 'ROOT'
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//
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// There is one of these objects for each of the VRoots defined. It contains
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// the VRoot parameters. The only parameter used by the VRoot library is the
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// vroot name, but users of this library should inherit from this and make
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// their own version which stores all of the other parameters of interest.
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//
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class CVRoot : public CRefCount2 {
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public:
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CVRoot() {
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m_fInit = FALSE;
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m_pPrev = NULL;
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m_pNext = NULL;
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m_dwSig = VROOT_GOOD_SIG;
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}
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virtual ~CVRoot();
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//
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// initialize this class.
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//
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void Init(LPCSTR pszVRootName, CVRootTable *pVRootTable, LPCWSTR wszConfigPath, BOOL fUpgrade );
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//
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// get the vroot name (and optionally its length) from this entry.
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//
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LPCSTR GetVRootName(DWORD *pcch = NULL) {
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_ASSERT(m_fInit);
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if (pcch != NULL) *pcch = m_cchVRootName;
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return m_szVRootName;
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}
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// get the MB configuration path
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LPCWSTR GetConfigPath() { return m_wszConfigPath; }
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//
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// This needs to be defined by a subclass of CVRoot.
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//
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virtual HRESULT ReadParameters(IMSAdminBase *pMB,
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METADATA_HANDLE hmb) = 0;
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//
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// Virtual function for handling orphan VRoot during VRootRescan/VRootDelete
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//
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virtual void DispatchDropVRoot() {};
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// the next and previous pointers for our list
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CVRoot *m_pPrev;
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CVRoot *m_pNext;
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#ifdef DEBUG
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LIST_ENTRY m_DebugList;
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#endif
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protected:
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DWORD m_dwSig;
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BOOL m_fInit;
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// the name of this vroot (alt.binaries for example) and its length.
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char m_szVRootName[MAX_VROOT_PATH];
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DWORD m_cchVRootName;
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// the table which owns us
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CVRootTable *m_pVRootTable;
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// our config path in the metabase
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WCHAR m_wszConfigPath[MAX_VROOT_PATH];
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// upgrad flag
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BOOL m_fUpgrade;
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};
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typedef CRefPtr2<CVRoot> VROOTPTR;
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//
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// an implementation of CVRoot which reads the parameters likely to be used
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// by all IIS based client of this VRoot implementation.
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//
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class CIISVRoot : public CVRoot {
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public:
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virtual ~CIISVRoot() {}
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void Init(void *pContext, // ignored
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LPCSTR pszVRootName, // passed to CVRoot::Init
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CVRootTable *pVRootTable, // passed to CVRoot::Init
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LPCWSTR pwszConfigPath,
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BOOL fUpgrade ) // available via GetConfigPath()
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{
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CVRoot::Init(pszVRootName, pVRootTable, pwszConfigPath, fUpgrade);
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m_pContext = pContext;
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}
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// get the context pointer
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void *GetContext() { return m_pContext; }
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// SSL properties
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DWORD GetSSLAccessMask() { return m_dwSSL; }
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// access properties
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DWORD GetAccessMask() { return m_dwAccess; }
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// is the content indexed?
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BOOL IsContentIndexed() { return m_fIsIndexed; }
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// this method reads the parameters below from the metabase
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virtual HRESULT ReadParameters(IMSAdminBase *pMB,
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METADATA_HANDLE hmb);
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protected:
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// this method reads a dword from the metabase (wraps GetData())
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virtual HRESULT GetDWord(IMSAdminBase *pMB,
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METADATA_HANDLE hmb,
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DWORD dwId,
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DWORD *pdw);
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// this method reads a string from the metabase (wraps GetData())
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virtual HRESULT GetString(IMSAdminBase *pMB,
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METADATA_HANDLE hmb,
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DWORD dwId,
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LPWSTR szString,
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DWORD *pcString);
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protected:
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// parameters given to use by the constructor
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void *m_pContext;
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// parameters read from the metabase
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BOOL m_fIsIndexed; // is the content indexed?
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BOOL m_fDontLog; // should logging be disabled here?
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DWORD m_dwAccess; // access permissions bitmask
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DWORD m_dwSSL; // SSL access perm's bitmask
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};
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//
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// a subclass of the above which hides the fact that context is a void *.
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//
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// template arguments:
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// _context_type - the type for the context. must be castable to void *.
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//
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template <class _context_type>
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class CIISVRootTmpl : public CIISVRoot {
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public:
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virtual ~CIISVRootTmpl() {}
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void Init(_context_type pContext,
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LPCSTR pszVRootName,
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CVRootTable *pVRootTable,
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LPCWSTR pwszConfigPath,
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BOOL fUpgrade )
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{
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CIISVRoot::Init((void *) pContext,
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pszVRootName,
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pVRootTable,
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pwszConfigPath,
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fUpgrade );
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}
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// return the context pointer (mostly likely a pointer to an IIS
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// instance)
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_context_type GetContext() {
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return (_context_type) CIISVRoot::GetContext();
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}
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};
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//
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// this is a type that points to a function which can create CVRoot objects.
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// use it to create your own version of the CVRoot class.
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//
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// parameters:
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// pContext - the context pointer passed into CVRootTable
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// pszVRootName - the name of the vroot
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// pwszConfigPath - a Unicode string with the path in the metabase for
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// this vroot's configuration information.
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//
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typedef VROOTPTR (*PFNCREATE_VROOT)(void *pContext,
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LPCSTR pszVRootName,
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CVRootTable *pVRootTable,
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LPCWSTR pwszConfigPath,
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BOOL fUpgrade );
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//
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// a function of this type is called when the vroot table is scanned. it
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// is passed a copy of the context pointer
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//
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typedef void (*PFN_VRTABLE_SCAN_NOTIFY)(void *pContext);
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typedef void (*PFN_VRENUM_CALLBACK)(void *pEnumContext,
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CVRoot *pVRoot);
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//
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// The CVRootTable object keeps a list of VRoots and can find a vroot for
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// a given folder.
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//
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class CVRootTable {
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public:
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static HRESULT GlobalInitialize();
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static void GlobalShutdown();
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CVRootTable(void *pContext,
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PFNCREATE_VROOT pfnCreateVRoot,
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PFN_VRTABLE_SCAN_NOTIFY pfnScanNotify);
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virtual ~CVRootTable();
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HRESULT Initialize(LPCSTR pszMBPath, BOOL fUpgrade );
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HRESULT Shutdown(void);
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HRESULT FindVRoot(LPCSTR pszPath, VROOTPTR *ppVRoot);
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HRESULT EnumerateVRoots(void *pEnumContext,
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PFN_VRENUM_CALLBACK pfnCallback);
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private:
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VROOTPTR NewVRoot();
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HRESULT ScanVRoots( BOOL fUpgrade );
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HRESULT InitializeVRoot(CVRoot *pVRoot);
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HRESULT InitializeVRoots();
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HRESULT ScanVRootsRecursive(METADATA_HANDLE hmbParent,
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LPCWSTR pwszKey,
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LPCSTR pszVRootName,
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LPCWSTR pwszPath,
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BOOL fUpgrade );
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void InsertVRoot(VROOTPTR pVRoot);
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// find a vroot
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HRESULT FindVRootInternal(LPCSTR pszPath, VROOTPTR *ppVRoot);
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// convert a config path to a vroot name
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void ConfigPathToVRootName(LPCWSTR pwszConfigPath, LPSTR szVRootName);
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// used to pass metabase notifications back into this object
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static void MBChangeNotify(void *pThis,
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DWORD cChangeList,
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MD_CHANGE_OBJECT_W pcoChangeList[]);
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// parameters changed under a vroot
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void VRootChange(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
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// a vroot was deleted
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void VRootDelete(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
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// a vroot was added
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void VRootAdd(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
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// rescan the whole vroot list
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void VRootRescan(void);
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#ifdef DEBUG
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LIST_ENTRY m_DebugListHead;
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CShareLockNH m_DebugListLock;
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void DebugPushVRoot( CVRoot *pVRoot ) {
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_ASSERT( pVRoot );
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m_DebugListLock.ExclusiveLock();
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InsertTailList( &m_DebugListHead, &pVRoot->m_DebugList );
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m_DebugListLock.ExclusiveUnlock();
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}
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void DebugExpungeVRoot( CVRoot *pVRoot ) {
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m_DebugListLock.ExclusiveLock();
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RemoveEntryList( &pVRoot->m_DebugList );
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m_DebugListLock.ExclusiveUnlock();
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}
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#endif
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// locking: for walking the list either m_lock.ShareLock must be
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// held or m_cs must be held. For editting the list both
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// m_lock.ExclusiveLock must be held and m_cs must be held.
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// When making large changes (such as rebuilding the entire list)
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// m_cs should be held until all of the changes are complete.
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// lock for the vroot list
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CShareLockNH m_lock;
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// critical section used for making global changes on the vroot
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// list. this is used to make sure that only one thread can editting
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// the list at a time
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CRITICAL_SECTION m_cs;
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// our context pointer
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void *m_pContext;
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// the path to our metabase area
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WCHAR m_wszRootPath[MAX_VROOT_PATH];
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DWORD m_cchRootPath;
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// have we been initialized?
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BOOL m_fInit;
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// are we shutting down?
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BOOL m_fShuttingDown;
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// function to create a new vroot object
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PFNCREATE_VROOT m_pfnCreateVRoot;
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// function to call when the vroot table is rescanned
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PFN_VRTABLE_SCAN_NOTIFY m_pfnScanNotify;
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// the list of vroots
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TFList<CVRoot> m_listVRoots;
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// this RW lock is used to figure out when all of the VRoot objects
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// have shutdown. They hold a ShareLock on it for their lifetime,
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// so the CVRootTable can grab an ExclusiveLock to wait for all of
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// the VRoot objects to disappear.
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CShareLockNH m_lockVRootsExist;
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// these guys need access to m_lockVRootsExist
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friend void CVRoot::Init(LPCSTR, CVRootTable *, LPCWSTR, BOOL);
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friend CVRoot::~CVRoot();
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};
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//
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// this is a templated version of CIISVRootTable. You tell it the version of
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// CVRoot that you are using, and the context type that you are using.
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//
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// template arguments:
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// _CVRoot - a subclass of CVRoot that you'll be using
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// _context_type - the type that you'll be using for context information.
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// this must be castable to void *.
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//
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template <class _CVRoot, class _context_type>
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class CIISVRootTable {
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public:
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CIISVRootTable(_context_type pContext,
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PFN_VRTABLE_SCAN_NOTIFY pfnScanNotify) :
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impl((void *) pContext,
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CIISVRootTable<_CVRoot, _context_type>::CreateVRoot, pfnScanNotify)
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{
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}
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HRESULT Initialize(LPCSTR pszMBPath, BOOL fUpgrade ) {
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return impl.Initialize(pszMBPath, fUpgrade);
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}
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HRESULT Shutdown(void) {
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return impl.Shutdown();
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}
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HRESULT FindVRoot(LPCSTR pszPath, CRefPtr2<_CVRoot> *ppVRoot) {
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return impl.FindVRoot(pszPath, (VROOTPTR *) ppVRoot);
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}
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HRESULT EnumerateVRoots(void *pEnumContext,
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PFN_VRENUM_CALLBACK pfnCallback)
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{
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return impl.EnumerateVRoots(pEnumContext, pfnCallback);
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}
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private:
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static VROOTPTR CreateVRoot(void *pContext,
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LPCSTR pszVRootName,
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CVRootTable *pVRootTable,
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LPCWSTR pwszConfigPath,
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BOOL fUpgrade)
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{
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// create the vroot object
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CRefPtr2<_CVRoot> pVRoot = new _CVRoot;
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// initialize it
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pVRoot->Init((_context_type) pContext,
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pszVRootName,
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pVRootTable,
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pwszConfigPath,
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fUpgrade );
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return (_CVRoot *)pVRoot;
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}
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CVRootTable impl;
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};
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#endif
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