mimechk.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- /****************************************************************************
- * Defines
- */
- #define ENCRYPTED_MIME_EXTENSION "-encrypted"
- #define ENCRYPTED_MIME_EXTENSION_SIZE (sizeof(ENCRYPTED_MIME_EXTENSION) - 1)
- /****************************************************************************
- * Includes
- */
- // #include "hlxclib/stdio.h"
- #include "hlxclib/string.h"
- #include "hxtypes.h"
- #include "hxstrutl.h"
- #include "mimechk.h"
- BOOL isProhibitedMimeType(const char* pMimeType, ULONG32 ulMimeLen)
- {
- BOOL bProhibited = TRUE;
- // First disqualify based solely on length
- if ((ulMimeLen != 20) && (ulMimeLen != 29) && (ulMimeLen != 26) &&
- (ulMimeLen != 25) && (ulMimeLen != 23) && (ulMimeLen != 21) &&
- (ulMimeLen != 24))
- {
- return TRUE;
- }
- // Now walk the input string backwards and find out if it matches
- // any of the following acceptable mime types:
- //
- // "audio/x-pn-realaudio" "oidualaer-np-x/oidua"
- // "application/x-shockwave-flash" "hsalf-evawkcohs-x/noitacilppa"
- // "application/x-pn-realmedia" "aidemlaer-np-x/noitacilppa"
- // "application/x-pn-realevent" "tnevelaer-np-x/noitacilppa"
- // "application/x-pn-imagemap" "pamegami-np-x/noitacilppa"
- // "application/x-pn-realad" "dalaer-np-x/noitacilppa"
- // "syncMM/x-pn-realvideo" "oedivlaer-np-x/MMcnys"
- // "image_map/x-pn-realvideo" "oedivlaer-np-x/pam_egami"
- // "video/x-pn-realvideo"
- if (pMimeType[ulMimeLen - 1] == 'o')
- {
- if (pMimeType[ulMimeLen - 2] == 'e')
- {
- if (pMimeType[0] == 's')
- {
- // "syncMM/x-pn-realvideo"
- if (strcmp(pMimeType, "syncMM/x-pn-realvideo") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[0] == 'i')
- {
- // "image_map/x-pn-realvideo"
- if (strcmp(pMimeType, "image_map/x-pn-realvideo") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[0] == 'v')
- {
- // "video/x-pn-realvideo"
- if (strcmp(pMimeType, "video/x-pn-realvideo") == 0)
- {
- bProhibited = FALSE;
- }
- }
- }
- else if (pMimeType[ulMimeLen - 2] == 'i')
- {
- // "audio/x-pn-realaudio"
- if (strcmp(pMimeType, "audio/x-pn-realaudio") == 0)
- {
- bProhibited = FALSE;
- }
- }
- }
- else if (pMimeType[ulMimeLen - 1] == 'h')
- {
- // "application/x-shockwave-flash"
- if (strcmp(pMimeType, "application/x-shockwave-flash") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[ulMimeLen - 1] == 'a')
- {
- // "application/x-pn-realmedia"
- if (strcmp(pMimeType, "application/x-pn-realmedia") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[ulMimeLen - 1] == 't')
- {
- // "application/x-pn-realevent"
- if (strcmp(pMimeType, "application/x-pn-realevent") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[ulMimeLen - 1] == 'p')
- {
- // "application/x-pn-imagemap"
- if (strcmp(pMimeType, "application/x-pn-imagemap") == 0)
- {
- bProhibited = FALSE;
- }
- }
- else if (pMimeType[ulMimeLen - 1] == 'd')
- {
- // "application/x-pn-realad"
- if (strcmp(pMimeType, "application/x-pn-realad") == 0)
- {
- bProhibited = FALSE;
- }
- }
- return bProhibited;
- }
- int hxMimeRootCmp(const char* pMimeType1, const char* pMimeType2)
- {
- int retVal;
- retVal = strcasecmp(pMimeType1, pMimeType2);
- if (retVal != 0)
- {
- ULONG32 ulLength1 = strlen(pMimeType1);
- ULONG32 ulLength2 = strlen(pMimeType2);
- if (ulLength1 == (ulLength2 + ENCRYPTED_MIME_EXTENSION_SIZE))
- {
- if ((strcasecmp(pMimeType1 + ulLength1 - ENCRYPTED_MIME_EXTENSION_SIZE,
- ENCRYPTED_MIME_EXTENSION) == 0) &&
- (strncasecmp(pMimeType1, pMimeType2, ulLength2) == 0))
- {
- retVal = 0;
- }
- }
- else if (ulLength2 == (ulLength1 + ENCRYPTED_MIME_EXTENSION_SIZE))
- {
- if ((strcasecmp(pMimeType2 + ulLength2 - ENCRYPTED_MIME_EXTENSION_SIZE,
- ENCRYPTED_MIME_EXTENSION) == 0) &&
- (strncasecmp(pMimeType1, pMimeType2, ulLength1) == 0))
- {
- retVal = 0;
- }
- }
- }
- return retVal;
- }
- BOOL decryptMimeType(CHXString &strMimeType)
- {
- BOOL bRetVal = FALSE; // assume no decryption
- ULONG32 ulMimeLength = strMimeType.GetLength();
-
- if (ulMimeLength > ENCRYPTED_MIME_EXTENSION_SIZE)
- {
- const char* pMimeChars = (const char*) (strMimeType);
-
- if (strcmp(ENCRYPTED_MIME_EXTENSION,
- &pMimeChars[ulMimeLength - ENCRYPTED_MIME_EXTENSION_SIZE]) == 0)
- {
- ulMimeLength -= ENCRYPTED_MIME_EXTENSION_SIZE;
- strMimeType.GetBufferSetLength(ulMimeLength);
- bRetVal = TRUE; // decrypted
- }
- }
-
- return bRetVal;
- }
- BOOL encryptMimeType(CHXString &strMimeType)
- {
- BOOL bRetVal = FALSE; // assume no encryption
- ULONG32 ulMimeLength = strMimeType.GetLength();
- const char* pMimeChars = (const char*) (strMimeType);
- if ((ulMimeLength < ENCRYPTED_MIME_EXTENSION_SIZE) ||
- (strcmp(ENCRYPTED_MIME_EXTENSION,
- &pMimeChars[ulMimeLength - ENCRYPTED_MIME_EXTENSION_SIZE]) != 0))
- {
- strMimeType += ENCRYPTED_MIME_EXTENSION;
- bRetVal = TRUE;
- }
- return bRetVal;
- }
-