Windows2003-3790/inetsrv/iis/staxinc/vroot.h

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2001-01-01 00:00:00 +01:00
#ifndef __VROOT_H__
#define __VROOT_H__
#include <dbgtrace.h>
#include <iadmw.h>
#include <mddefw.h>
#include <tflist.h>
#include <rwnew.h>
#include <refptr2.h>
#include <listmacr.h>
#define MAX_VROOT_PATH MAX_PATH + 1
class CVRootTable;
#define VROOT_GOOD_SIG 'TOOR'
#define VROOT_BAD_SIG 'ROOT'
//
// There is one of these objects for each of the VRoots defined. It contains
// the VRoot parameters. The only parameter used by the VRoot library is the
// vroot name, but users of this library should inherit from this and make
// their own version which stores all of the other parameters of interest.
//
class CVRoot : public CRefCount2 {
public:
CVRoot() {
m_fInit = FALSE;
m_pPrev = NULL;
m_pNext = NULL;
m_dwSig = VROOT_GOOD_SIG;
}
virtual ~CVRoot();
//
// initialize this class.
//
void Init(LPCSTR pszVRootName, CVRootTable *pVRootTable, LPCWSTR wszConfigPath, BOOL fUpgrade );
//
// get the vroot name (and optionally its length) from this entry.
//
LPCSTR GetVRootName(DWORD *pcch = NULL) {
_ASSERT(m_fInit);
if (pcch != NULL) *pcch = m_cchVRootName;
return m_szVRootName;
}
// get the MB configuration path
LPCWSTR GetConfigPath() { return m_wszConfigPath; }
//
// This needs to be defined by a subclass of CVRoot.
//
virtual HRESULT ReadParameters(IMSAdminBase *pMB,
METADATA_HANDLE hmb) = 0;
//
// Virtual function for handling orphan VRoot during VRootRescan/VRootDelete
//
virtual void DispatchDropVRoot() {};
// the next and previous pointers for our list
CVRoot *m_pPrev;
CVRoot *m_pNext;
#ifdef DEBUG
LIST_ENTRY m_DebugList;
#endif
protected:
DWORD m_dwSig;
BOOL m_fInit;
// the name of this vroot (alt.binaries for example) and its length.
char m_szVRootName[MAX_VROOT_PATH];
DWORD m_cchVRootName;
// the table which owns us
CVRootTable *m_pVRootTable;
// our config path in the metabase
WCHAR m_wszConfigPath[MAX_VROOT_PATH];
// upgrad flag
BOOL m_fUpgrade;
};
typedef CRefPtr2<CVRoot> VROOTPTR;
//
// an implementation of CVRoot which reads the parameters likely to be used
// by all IIS based client of this VRoot implementation.
//
class CIISVRoot : public CVRoot {
public:
virtual ~CIISVRoot() {}
void Init(void *pContext, // ignored
LPCSTR pszVRootName, // passed to CVRoot::Init
CVRootTable *pVRootTable, // passed to CVRoot::Init
LPCWSTR pwszConfigPath,
BOOL fUpgrade ) // available via GetConfigPath()
{
CVRoot::Init(pszVRootName, pVRootTable, pwszConfigPath, fUpgrade);
m_pContext = pContext;
}
// get the context pointer
void *GetContext() { return m_pContext; }
// SSL properties
DWORD GetSSLAccessMask() { return m_dwSSL; }
// access properties
DWORD GetAccessMask() { return m_dwAccess; }
// is the content indexed?
BOOL IsContentIndexed() { return m_fIsIndexed; }
// this method reads the parameters below from the metabase
virtual HRESULT ReadParameters(IMSAdminBase *pMB,
METADATA_HANDLE hmb);
protected:
// this method reads a dword from the metabase (wraps GetData())
virtual HRESULT GetDWord(IMSAdminBase *pMB,
METADATA_HANDLE hmb,
DWORD dwId,
DWORD *pdw);
// this method reads a string from the metabase (wraps GetData())
virtual HRESULT GetString(IMSAdminBase *pMB,
METADATA_HANDLE hmb,
DWORD dwId,
LPWSTR szString,
DWORD *pcString);
protected:
// parameters given to use by the constructor
void *m_pContext;
// parameters read from the metabase
BOOL m_fIsIndexed; // is the content indexed?
BOOL m_fDontLog; // should logging be disabled here?
DWORD m_dwAccess; // access permissions bitmask
DWORD m_dwSSL; // SSL access perm's bitmask
};
//
// a subclass of the above which hides the fact that context is a void *.
//
// template arguments:
// _context_type - the type for the context. must be castable to void *.
//
template <class _context_type>
class CIISVRootTmpl : public CIISVRoot {
public:
virtual ~CIISVRootTmpl() {}
void Init(_context_type pContext,
LPCSTR pszVRootName,
CVRootTable *pVRootTable,
LPCWSTR pwszConfigPath,
BOOL fUpgrade )
{
CIISVRoot::Init((void *) pContext,
pszVRootName,
pVRootTable,
pwszConfigPath,
fUpgrade );
}
// return the context pointer (mostly likely a pointer to an IIS
// instance)
_context_type GetContext() {
return (_context_type) CIISVRoot::GetContext();
}
};
//
// this is a type that points to a function which can create CVRoot objects.
// use it to create your own version of the CVRoot class.
//
// parameters:
// pContext - the context pointer passed into CVRootTable
// pszVRootName - the name of the vroot
// pwszConfigPath - a Unicode string with the path in the metabase for
// this vroot's configuration information.
//
typedef VROOTPTR (*PFNCREATE_VROOT)(void *pContext,
LPCSTR pszVRootName,
CVRootTable *pVRootTable,
LPCWSTR pwszConfigPath,
BOOL fUpgrade );
//
// a function of this type is called when the vroot table is scanned. it
// is passed a copy of the context pointer
//
typedef void (*PFN_VRTABLE_SCAN_NOTIFY)(void *pContext);
typedef void (*PFN_VRENUM_CALLBACK)(void *pEnumContext,
CVRoot *pVRoot);
//
// The CVRootTable object keeps a list of VRoots and can find a vroot for
// a given folder.
//
class CVRootTable {
public:
static HRESULT GlobalInitialize();
static void GlobalShutdown();
CVRootTable(void *pContext,
PFNCREATE_VROOT pfnCreateVRoot,
PFN_VRTABLE_SCAN_NOTIFY pfnScanNotify);
virtual ~CVRootTable();
HRESULT Initialize(LPCSTR pszMBPath, BOOL fUpgrade );
HRESULT Shutdown(void);
HRESULT FindVRoot(LPCSTR pszPath, VROOTPTR *ppVRoot);
HRESULT EnumerateVRoots(void *pEnumContext,
PFN_VRENUM_CALLBACK pfnCallback);
private:
VROOTPTR NewVRoot();
HRESULT ScanVRoots( BOOL fUpgrade );
HRESULT InitializeVRoot(CVRoot *pVRoot);
HRESULT InitializeVRoots();
HRESULT ScanVRootsRecursive(METADATA_HANDLE hmbParent,
LPCWSTR pwszKey,
LPCSTR pszVRootName,
LPCWSTR pwszPath,
BOOL fUpgrade );
void InsertVRoot(VROOTPTR pVRoot);
// find a vroot
HRESULT FindVRootInternal(LPCSTR pszPath, VROOTPTR *ppVRoot);
// convert a config path to a vroot name
void ConfigPathToVRootName(LPCWSTR pwszConfigPath, LPSTR szVRootName);
// used to pass metabase notifications back into this object
static void MBChangeNotify(void *pThis,
DWORD cChangeList,
MD_CHANGE_OBJECT_W pcoChangeList[]);
// parameters changed under a vroot
void VRootChange(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
// a vroot was deleted
void VRootDelete(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
// a vroot was added
void VRootAdd(LPCWSTR pwszConfigPath, LPCSTR pszVRootName);
// rescan the whole vroot list
void VRootRescan(void);
#ifdef DEBUG
LIST_ENTRY m_DebugListHead;
CShareLockNH m_DebugListLock;
void DebugPushVRoot( CVRoot *pVRoot ) {
_ASSERT( pVRoot );
m_DebugListLock.ExclusiveLock();
InsertTailList( &m_DebugListHead, &pVRoot->m_DebugList );
m_DebugListLock.ExclusiveUnlock();
}
void DebugExpungeVRoot( CVRoot *pVRoot ) {
m_DebugListLock.ExclusiveLock();
RemoveEntryList( &pVRoot->m_DebugList );
m_DebugListLock.ExclusiveUnlock();
}
#endif
// locking: for walking the list either m_lock.ShareLock must be
// held or m_cs must be held. For editting the list both
// m_lock.ExclusiveLock must be held and m_cs must be held.
// When making large changes (such as rebuilding the entire list)
// m_cs should be held until all of the changes are complete.
// lock for the vroot list
CShareLockNH m_lock;
// critical section used for making global changes on the vroot
// list. this is used to make sure that only one thread can editting
// the list at a time
CRITICAL_SECTION m_cs;
// our context pointer
void *m_pContext;
// the path to our metabase area
WCHAR m_wszRootPath[MAX_VROOT_PATH];
DWORD m_cchRootPath;
// have we been initialized?
BOOL m_fInit;
// are we shutting down?
BOOL m_fShuttingDown;
// function to create a new vroot object
PFNCREATE_VROOT m_pfnCreateVRoot;
// function to call when the vroot table is rescanned
PFN_VRTABLE_SCAN_NOTIFY m_pfnScanNotify;
// the list of vroots
TFList<CVRoot> m_listVRoots;
// this RW lock is used to figure out when all of the VRoot objects
// have shutdown. They hold a ShareLock on it for their lifetime,
// so the CVRootTable can grab an ExclusiveLock to wait for all of
// the VRoot objects to disappear.
CShareLockNH m_lockVRootsExist;
// these guys need access to m_lockVRootsExist
friend void CVRoot::Init(LPCSTR, CVRootTable *, LPCWSTR, BOOL);
friend CVRoot::~CVRoot();
};
//
// this is a templated version of CIISVRootTable. You tell it the version of
// CVRoot that you are using, and the context type that you are using.
//
// template arguments:
// _CVRoot - a subclass of CVRoot that you'll be using
// _context_type - the type that you'll be using for context information.
// this must be castable to void *.
//
template <class _CVRoot, class _context_type>
class CIISVRootTable {
public:
CIISVRootTable(_context_type pContext,
PFN_VRTABLE_SCAN_NOTIFY pfnScanNotify) :
impl((void *) pContext,
CIISVRootTable<_CVRoot, _context_type>::CreateVRoot, pfnScanNotify)
{
}
HRESULT Initialize(LPCSTR pszMBPath, BOOL fUpgrade ) {
return impl.Initialize(pszMBPath, fUpgrade);
}
HRESULT Shutdown(void) {
return impl.Shutdown();
}
HRESULT FindVRoot(LPCSTR pszPath, CRefPtr2<_CVRoot> *ppVRoot) {
return impl.FindVRoot(pszPath, (VROOTPTR *) ppVRoot);
}
HRESULT EnumerateVRoots(void *pEnumContext,
PFN_VRENUM_CALLBACK pfnCallback)
{
return impl.EnumerateVRoots(pEnumContext, pfnCallback);
}
private:
static VROOTPTR CreateVRoot(void *pContext,
LPCSTR pszVRootName,
CVRootTable *pVRootTable,
LPCWSTR pwszConfigPath,
BOOL fUpgrade)
{
// create the vroot object
CRefPtr2<_CVRoot> pVRoot = new _CVRoot;
// initialize it
pVRoot->Init((_context_type) pContext,
pszVRootName,
pVRootTable,
pwszConfigPath,
fUpgrade );
return (_CVRoot *)pVRoot;
}
CVRootTable impl;
};
#endif