hxinternetconfigutils.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxinternetconfigutils.cpp,v 1.3.36.3 2004/07/09 01:47:27 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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
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 * 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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
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 * to use your version of this file under the terms of either the RPSL
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 * use your version of this file under the terms of any one of the
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 * 
 * 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
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 * ENJOYMENT OR NON-INFRINGEMENT.
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 * ***** END LICENSE BLOCK ***** */

#include "hxtypes.h"
#include "hxinternetconfigutils.h"
#include "hx_moreprocesses.h" // for GetCurrentAppSignature
#include "string.h"
#ifndef _MAC_MACHO
#include <Processes.h>
#endif
#include "hxstrutl.h"

#ifndef _CARBON
#define ICAttr long
#endif

ICInstance 	HXInternetConfigMac::m_icInstance = NULL;
UInt32 		HXInternetConfigMac::m_refcount = 0;

#ifdef _CARBON
    const ICAttr kNoAttrChange = kICAttrNoChange;
#else
    const ICAttr kNoAttrChange = ICattr_no_change;
#endif	    

static void ConcatPString(StringPtr mainStr, ConstStr255Param suffix)
{
	short len1 = mainStr[0];
	short len2 = suffix[0];
	
	if (len1 + len2 > 255)
	{
		len2 = 255 - len1;
	}
	BlockMoveData(&suffix[1], &mainStr[len1 + 1], len2);
	mainStr[0] += len2;
}

static void CopyPString(ConstStr255Param source, StringPtr dest)
{
	BlockMoveData(source, dest, 1 + source[0]);
}

static Boolean PStringInString(ConstStr255Param searchStr, ConstStr255Param biggerStr)
{
	char csearch[256]; /* Flawfinder: ignore */
	char cbigger[256]; /* Flawfinder: ignore */
	Boolean bFound;
	
	CopyP2CString(searchStr, csearch, 256);
	CopyP2CString(biggerStr, cbigger, 256);
	
	bFound = (NULL != strstr(cbigger, csearch));
	return bFound;
}

Boolean HXInternetConfigMac::StartUsingIC(void)
{
	Boolean		bResult;
	
	bResult = false;
	
	if (!ICStart)
	{
		// we didn't link to InternetConfig
		return false;
	}
	
	// are there other instances already?
	if (m_refcount > 0)
	{
		m_refcount++;
		bResult = true;
	}
	else
	{
		// make a new instance
		OSStatus			status;
		
		if (m_icInstance) return true;
				
		// start internet config
		status = ICStart(&m_icInstance, GetCurrentAppSignature());
		if (status == noErr)
		{
#ifndef _CARBON
			status = ICFindConfigFile(m_icInstance, 0, NULL);
#endif
		}
		else
		{
			(void) ICStop(m_icInstance);
		}
	
		if (status == noErr)
		{
			// IC is started now, so increase the refcount
			m_refcount++;
			bResult = true;
		}

	}
	
	return bResult;
}

void HXInternetConfigMac::StopUsingIC(void)
{
	// are there outstanding instances besides us?
	if (m_refcount > 1)
	{
		m_refcount--;
	}
	else if (m_refcount == 1)
	{
		// we're the last instance, so close our connection
		// to the component
		
		(void) ICStop(m_icInstance);
		
		m_icInstance = NULL;
		m_refcount--;
	}
}

Boolean HXInternetConfigMac::StartReadingICPrefs(void)
{
	OSStatus 	status;
	Boolean		bResult;

	bResult = false;
	if (StartUsingIC())
	{
		status = ICBegin(m_icInstance, icReadOnlyPerm);
		if (status == noErr)
		{
			bResult = true;
		}
	}
	return bResult;
}

Boolean HXInternetConfigMac::StartWritingICPrefs(void)
{
	OSStatus 	status;
	Boolean		bResult;

	bResult = false;
	if (StartUsingIC())
	{
		status = ICBegin(m_icInstance, icReadWritePerm);
		if (status == noErr)
		{
			bResult = true;
		}
	}
	return bResult;
}

void HXInternetConfigMac::StopUsingICPrefs(void)
{
	(void) ICEnd(m_icInstance);
	StopUsingIC();
}

// IsInternetConfigAvailable initializes internet config if necessary
// and returns our connection

Boolean HXInternetConfigMac::IsInternetConfigAvailable(void)
{
	if (StartUsingIC())
	{
		StopUsingIC();
		return true;
	}
	return false;
}

// GetInstance initializes InternetConfig, if necessary, and returns
// our instance of the IC component

ICInstance HXInternetConfigMac::GetInstance(void)
{
	return m_icInstance;
}


// GetFileTypeFromName returns the appropriate file type for
// a given file name, or else zero if none is found

OSType HXInternetConfigMac::GetFileTypeFromName(ConstStr255Param fileName)
{
	ICMapEntry	mapEntry;
	OSStatus	status;
	OSType		result;

	if (!StartUsingIC()) return 0;

	result = (OSType) 0;
	status = ICMapFilename(m_icInstance, fileName, &mapEntry);
	if (status == noErr)
	{
#ifdef _CARBON
		result = mapEntry.fileType;
#else
		result = mapEntry.file_type;
#endif
	}

	StopUsingIC();
	
	return result;
}

// GetFileCreatorFromName returns the appropriate file creator for
// a given file name, or else zero if none is found

OSType HXInternetConfigMac::GetFileCreatorFromName(ConstStr255Param fileName)
{
	ICMapEntry	mapEntry;
	OSStatus	status;
	OSType		result;
	
	if (!StartUsingIC()) return 0;

	result = (OSType) 0;
	status = ICMapFilename(m_icInstance, fileName, &mapEntry);
	if (status == noErr)
	{
#ifdef _CARBON
		result = mapEntry.fileCreator;
#else
		result = mapEntry.file_creator;
#endif
	}
	
	StopUsingIC();
	
	return result;
}

// GetFileCreatorFromName returns the appropriate file creator for
// a given file name, or else zero if none is found

OSErr HXInternetConfigMac::GetFileExtensionFromType(OSType fType, OSType fCreator, ConstStr255Param fileName, StringPtr extension)
{
	ICMapEntry	mapEntry;
	OSStatus	status;
	
	if (!StartUsingIC()) return icInternalErr;

	status = ICMapTypeCreator(m_icInstance, fType, fCreator, fileName, &mapEntry);
	if (status == noErr)
	{
		// copy the extension (pascal string)
		CopyPString(mapEntry.extension, extension);
	}
	
	StopUsingIC();
	
	return (OSErr) status;
}

// LaunchURL launches the URL pointed to by the c-string

OSErr HXInternetConfigMac::LaunchURL(const char *url)
{
	OSStatus status;

	if (!StartUsingIC()) return icInternalErr;
				
	long startSel;
	long endSel;

	startSel = 0;
	endSel = strlen(url);
	status = ICLaunchURL(m_icInstance, "\p", (char *) url, 
						strlen(url), &startSel, &endSel);

	StopUsingIC();
	
	return (OSErr) status;
}


// GetFTPHelper gets the signature and name of the ftp helper app.
// Either parameter can be nil if the result isn't desired.

OSErr HXInternetConfigMac::GetFTPHelper(OSType *signature, StringPtr helperName)
{
	OSStatus status;

	if (!StartUsingIC()) return icInternalErr;
				
	long 		dataSize;
	ICAppSpec	targetSpec;
	ICAttr		icAttr;

	// construct our key string for getting the ftp helper by concatenating
	// ftp to the standard pascal helper prefix
	#define kICHelperFTP kICHelper "ftp"

	dataSize = sizeof(ICAppSpec);
	
	// get the preference information for the ftp helper
	status = ICGetPref(m_icInstance,  kICHelperFTP, &icAttr, (Ptr) &targetSpec, &dataSize);
	if (status == noErr)
	{
		if (signature)	*signature = targetSpec.fCreator;
		if (helperName)	CopyPString(targetSpec.name, helperName);
	}

	StopUsingIC();
	
	return (OSErr) status;
}


// GetHTTPHelper gets the signature and name of the http helper app.
// Either parameter can be nil if the result isn't desired.

OSErr HXInternetConfigMac::GetHTTPHelper(OSType *signature, StringPtr helperName)
{
	OSStatus status;

	if (!StartUsingIC()) return icInternalErr;
				
	long 		dataSize;
	ICAppSpec	targetSpec;
	ICAttr		icAttr;

	// construct our key string for getting the ftp helper by concatenating
	// ftp to the standard pascal helper prefix
	#define kICHelperHTTP kICHelper "http"

	dataSize = sizeof(ICAppSpec);
	
	// get the preference information for the ftp helper
	status = ICGetPref(m_icInstance,  kICHelperHTTP, &icAttr, (Ptr) &targetSpec, &dataSize);
	if (status == noErr)
	{
		if (signature)	*signature = targetSpec.fCreator;
		if (helperName)	CopyPString(targetSpec.name, helperName);
	}

	StopUsingIC();
	
	return (OSErr) status;
}

// GetEmailAddress returns user's email address
// returns FALSE if not found.

BOOL HXInternetConfigMac::GetEmailAddress(CHXString& strEmail)
{
	return GetICPreferenceString(kICEmail, strEmail);
}

// GetICPreferenceBoolean gets an IC preference that is a simple string
// returns FALSE if not found
// keys are in InternetConfig.h

BOOL HXInternetConfigMac::GetICPreferenceBoolean( ConstStr255Param keyPascalString, BOOL& outBool )
{
	OSStatus status;
	BOOL bSuccess = FALSE;
	
	outBool = FALSE;
	
	if (StartUsingIC())
	{
				
	    	long 		dataSize = sizeof(Boolean);
	    	ICAttr		icAttr;

		Boolean icBool;	
		
		status = ICGetPref(m_icInstance, keyPascalString, &icAttr, (char*) &icBool, &dataSize);
		
		bSuccess = (status == noErr && dataSize == sizeof(Boolean));
		if (bSuccess)
		{
			outBool = (icBool ? TRUE : FALSE);
		}

		StopUsingIC();
	}
	
	return bSuccess;
}

// GetICPreference gets an IC preference that is a simple string
// returns FALSE if not found
// keys are in InternetConfig.h

BOOL HXInternetConfigMac::GetICPreferenceString(ConstStr255Param keyPascalString, CHXString& strResult)
{
	OSStatus status;
	BOOL bSuccess = FALSE;
	
	strResult.Empty();

	if (StartUsingIC())
	{
				
	    	long 		textSize = 255;
		ICAttr		icAttr;

		Str255	bufferStr;	
		
		status = ICGetPref(m_icInstance, keyPascalString, &icAttr, (char*) bufferStr, &textSize);
		
		bSuccess = (status == noErr && textSize <= 255);
		if (bSuccess)
		{
			strResult.SetFromStr255(bufferStr);
		}

		StopUsingIC();
	}
	
	return bSuccess;
}

// GetICPreferenceStringList returns a STR#-style IC preference
// returns FALSE if not found
// keys are in InternetConfig.h
// the list is returns with items separated by the outputSeparator character

BOOL HXInternetConfigMac::GetICPreferenceStringList(ConstStr255Param keyPascalString, char outputSeparator, CHXString& strResult)
{
	OSStatus status;
	BOOL bSuccess = FALSE;
	
	strResult.Empty();

	if (StartUsingIC())
	{
		const int kBuffSize = 1024;
				
	    	long 		dataSize = kBuffSize;
		ICAttr		icAttr;

		char buffer[kBuffSize]; /* Flawfinder: ignore */
		
		status = ICGetPref(m_icInstance, keyPascalString, &icAttr, (char*) buffer, &dataSize);
		
		bSuccess = (status == noErr && dataSize <= kBuffSize && dataSize >= sizeof(short));
		if (bSuccess)
		{
			// buffer is a short number of strings, followed by Pascal strings
			//
			// combine them into the output CHXString, separated by outputSeparator characters
			
			short numItems = *(short *) buffer;
			StringPtr pCurrentStr = (StringPtr) &buffer[2];
			CHXString strTemp;
			
			for (int idx = 0; idx < numItems; idx++)
			{
				strTemp.SetFromStr255(pCurrentStr);
				
				if ((!strTemp.IsEmpty()) && (!strResult.IsEmpty()))
				{
					strResult += outputSeparator;
				}
				strResult += strTemp;
				
				pCurrentStr += (1 + pCurrentStr[0]);
			}
		}

		StopUsingIC();
	}
	
	return bSuccess;
}

// SetProtocol 

const unsigned char kHelper[] = kICHelper; // "\pHelper