cpgpkeysearcher.cpp

PGP8.0源码 请认真阅读您的文件包然后写出其具体功能

/*____________________________________________________________________________
		Copyright (C) 2002 PGP Corporation
        All rights reserved.

        $Id: CPGPKeySearcher.cpp,v 1.6 2002/08/06 20:09:23 dallen Exp $
____________________________________________________________________________*/

#include "pgpClassesConfig.h"

#include "pgpKeys.h"
#include "pgpUserInterface.h"
#include "pgpClientLib.h"

#include "CPGPContext.h"
#include "CPGPdiskEngine.h"
#include "CPGPKeyDB.h"
#include "CPGPtlsContext.h"

#include "CPGPKeySearcher.h"

_USING_PGP

// Class CPGPKeySearcher member functions

void 
CPGPKeySearcher::SearchKeys(
	const CPGPdiskContext&	context, 
	HWND					parentWnd, 
	CList<SearchItem>&		items, 
	CPGPKeyDB&				backingKeyDB)
{
	pgpAssert(IsWindow(parentWnd));

	if (items.Count() == 0)
		return;

	CPGPContext	pgpContext(context.PGPContext());

	// Create key ID array.
	CArray<PGPKeyID>	keyIDs(items.Count());

	PGPUInt32	i		= 0;
	SearchItem	*pItem	= items.Head();

	while (IsntNull(pItem))
	{
		pItem->wasFound = FALSE;
		keyIDs[i++] = pItem->keyID;

		pItem = items.Next(pItem);
	}

	// Ask server for unknown keys.
	CPGPtlsContext	tlsContext(pgpContext);
	PGPKeyDBRef		newKeysDBRef;

	PGPError	pgpErr	= PGPclSearchServerForKeyIDs(pgpContext, tlsContext, 
		parentWnd, keyIDs.Get(), items.Count(), kPGPclDefaultServer, 
		context.PGPKeyDB(), &newKeysDBRef);
	THROW_IF_PGPERROR(pgpErr);

	CPGPKeyDB	newKeysDB(newKeysDBRef, TRUE);
	CPGPKeySet	newKeys(newKeysDB);

	if (newKeys.Count() > 0)
	{
		// Copy the new keys to the backing set.
		CPGPKeySet	backingKeys(backingKeyDB, newKeys);

		// Update the unknown keys list.
		CPGPKeyList	backingKeyList(backingKeys, kPGPKeyOrdering_Any);
		CPGPKeyIter	backingKeyIter(backingKeyList);

		SearchItem	*pItem	= items.Head();

		while (IsntNull(pItem))
		{
			pItem->wasFound = FALSE;
			backingKeyIter.Rewind();

			CPGPKey	backingKey;

			while (backingKeyIter.Next(backingKey))
			{
				CPGPKeyID	backingKeyID;
				backingKey.GetKeyID(backingKeyID);

				if (backingKeyID.IsEqual(pItem->keyID))
				{
					pItem->wasFound = TRUE;
					pItem->key.Attach(backingKey);

					backingKeyIter.NextSubKey(pItem->subKey);
				}
			}

			pItem = items.Next(pItem);
		}

		// Ask if the user wants to import these keys.
		CPGPKeyDB	keyRings;
		keyRings.OpenDefault(pgpContext, kPGPOpenKeyDBFileOptions_Mutable);

		PGPclImportKeys(pgpContext, tlsContext, parentWnd, newKeys, 
			keyRings, kPGPclDefaultImportFlags);
	}
}