// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#include <e32std.h>

#include <e32base.h>

#include <f32file.h>

#include <es_sock.h>

#include "ENVIRON.H"

#include <stdlib.h>

#include <c32comm.h>

class MSystemInterface

/**

@internalComponent

*/

	{

public:

	virtual MSystemInterface& Clone()=0;

	virtual void Release()=0;

	virtual void TerminateProcess(int status)=0;

	virtual int dup (int fid, int& anErrno)=0;

	virtual int dup2 (int fid, int fid2, int& anErrno)=0;

	virtual int open (const wchar_t* name, int mode, int perms, int& anErrno)=0;

	virtual int read (int fid, char* buf, unsigned long len, int& anErrno)=0;

	virtual int write (int fid, const char* buf, unsigned long len, int& anErrno)=0;

	virtual int fsync (int fid, int& anErrno)=0;

	virtual int close (int fid, int& anErrno)=0;

	virtual int lseek (int fid, int offset, int whence, int& anErrno)=0;

	virtual int fstat (int fid, struct stat* st, int& anErrno)=0;

	virtual int ioctl (int fid, int cmd, void* param, int& anErrno)=0;

	virtual int ioctl (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno)=0;

	virtual int ioctl_complete (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno)=0;

	virtual int ioctl_cancel (int fid, int& anErrno)=0;

	virtual wchar_t * getcwd (wchar_t * buf, unsigned long len, int& anErrno)=0;

	virtual int chdir (const wchar_t* path, int& anErrno)=0;

	virtual int mkdir (const wchar_t* path, int perms, int& anErrno)=0;

	virtual int rmdir (const wchar_t* path, int& anErrno)=0;

	virtual int chmod (const wchar_t* path, int perms, int& anErrno)=0;

	virtual int unlink (const wchar_t* path, int& anErrno)=0;

	virtual int stat (const wchar_t* name, struct stat* st, int& anErrno)=0;

	virtual int rename (const wchar_t* oldname, const wchar_t* newname, int& anErrno)=0;

	virtual TInt ResolvePath (TParse& aResult, const wchar_t* path, TDes* aFilename)=0;

	virtual int socket (int family, int style, int protocol, int& anErrno)=0;

	virtual int recvfrom (int fd, char* buf, unsigned long cnt, int flags, struct sockaddr* from, unsigned long* fromsize, int& anErrno)=0;

	virtual int sendto (int fd, const char* buf, unsigned long cnt, int flags, struct sockaddr* to, unsigned long tosize, int& anErrno)=0;

	virtual int shutdown (int fd, int how, int& anErrno)=0;

	virtual int listen (int fd, int n, int& anErrno)=0;

	virtual int accept (int fd, int& anErrno)=0;

	virtual int bind (int fd, struct sockaddr* addr, unsigned long size, int& anErrno)=0;

	virtual int connect (int fd, struct sockaddr* addr, unsigned long size, int& anErrno)=0;

	virtual int sockname (int fd, struct sockaddr* addr, unsigned long* size, int anEnd, int& anErrno)=0;

	virtual int getsockopt (int fd, int level, int opt, void* buf, unsigned long* len, int& anErrno)=0;

	virtual int setsockopt (int fd, int level, int opt, void* buf, unsigned long len, int& anErrno)=0;

	virtual wchar_t* getenv (const wchar_t* name)=0; 

	virtual void unsetenv (const wchar_t* name)=0;

	virtual int setenv (const wchar_t* name, const wchar_t* value, int rewrite, int& anErrno)=0;

	virtual int popen3 (const wchar_t *file, const wchar_t *cmd, const wchar_t *mode, wchar_t** envp, int fids[3], int& anErrno)=0;

	virtual int waitpid (int pid, int* status, int options, int& anErrno)=0;

	};

class CFileDescBase;

class CFileTable

/**

@internalComponent

*/

	{

public:

	CFileTable();

	~CFileTable();

	void InitL();

	void Close();

	void Default(CFileDescBase* aConsole);

	TInt Reserve();

	TInt Attach(TInt aFid, CFileDescBase* aFile);

	TInt Detach(TInt aFid, CFileDescBase*& aDetached);

	TInt At(TInt aFid, CFileDescBase*& aFound) const;

	TInt Reserve(TInt aFids[3]);

	TInt Detach(TInt aFids[3]);

	int dup (int fid, int& anErrno);

	int dup2 (int fid, int fid2, int& anErrno);

//	int open (const wchar_t* name, int mode, int perms, int& anErrno, RFs& aFs);

	int open (const wchar_t* name, int mode, int perms, int& anErrno, RSessionBase& aFs);

	int close (int fid, int& anErrno);

	int userclose (int fid, int& anErrno);

	int lseek (int fid, int offset, int whence, int& anErrno);

	int fstat (int fid, struct stat* st, int& anErrno);

	int socket (int family, int style, int protocol, int& anErrno, RSocketServ& aSs);

	int listen (int fd, int n, int& anErrno);

	int bind (int fd, TSockAddr& address, int& anErrno);

	int sockname (int fd, TSockAddr& address, int anEnd, int& anErrno);

	int getsockopt (int fd, int level, int opt, void* buf, unsigned long* len, int& anErrno);

	int setsockopt (int fd, int level, int opt, void* buf, unsigned long len, int& anErrno);

	int ioctlcomplete (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno);

	int ioctlcancel (int fid, int& anErrno);

	TInt Asynch (int fid, CFileDescBase*& aFile);

private:

	CArrayPtrSeg<CFileDescBase> iFids;

	TInt Dup(TInt& aFid);

	TInt Dup2(TInt aFid, TInt aFid2);

	void Release(TInt aFid);

	};

class PosixFilesystem

/**

@internalComponent

*/

	{

public:

	static wchar_t* getcwd (RFs& aFs, wchar_t* buf, unsigned long len, int& anErrno);

	static int chdir (RFs& aFs, const wchar_t* path, int& anErrno);

	static int mkdir (RFs& aFs, const wchar_t* path, int perms, int& anErrno);

	static int rmdir (RFs& aFs, const wchar_t* path, int& anErrno);

	static int chmod (RFs& aFs, const wchar_t* path, int perms, int& anErrno);

	static int unlink (RFs& aFs, const wchar_t* path, int& anErrno);

	static int stat (RFs& aFs, const wchar_t* name, struct stat* st, int& anErrno);

	static int rename (RFs& aFs, const wchar_t* oldname, const wchar_t* newname, int& anErrno);

	static TInt ResolvePath (RFs& aFs, TParse& aResult, const wchar_t* path, TDes* aFilename);

	static TInt SetDefaultDir (RFs& aFs);

	};

NONSHARABLE_CLASS(CLocalSystemInterface) : public CBase, public MSystemInterface

/**

To make CleanupStack::PushL() and CleanupStack::Pop() work properly in the 2-phase constructor, 

derivation order must be: public CBase, public MSystemInterface.

@internalComponent

*/

	{

public:

	static CLocalSystemInterface* NewL();	

	~CLocalSystemInterface();

	virtual MSystemInterface& Clone();

	virtual void Release();

	virtual void TerminateProcess(int status);

	virtual int dup (int fid, int& anErrno);

	virtual int dup2 (int fid, int fid2, int& anErrno);

	virtual int open (const wchar_t* name, int mode, int perms, int& anErrno);

	virtual int read (int fid, char* buf, unsigned long len, int& anErrno);

	virtual int write (int fid, const char* buf, unsigned long len, int& anErrno);

	virtual int fsync (int fid, int& anErrno);

	virtual int close (int fid, int& anErrno);

	virtual int lseek (int fid, int offset, int whence, int& anErrno);

	virtual int fstat (int fid, struct stat* st, int& anErrno);

	virtual int ioctl (int fid, int cmd, void* param, int& anErrno);

	virtual int ioctl (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno);

	virtual int ioctl_complete (int fid, int cmd, void* param, TRequestStatus& aStatus, int& anErrno);

	virtual int ioctl_cancel (int fid, int& anErrno);

	virtual wchar_t* getcwd (wchar_t* buf, unsigned long len, int& anErrno);

	virtual int chdir (const wchar_t* path, int& anErrno);

	virtual int mkdir (const wchar_t* path, int perms, int& anErrno);

	virtual int rmdir (const wchar_t* path, int& anErrno);

	virtual int chmod (const wchar_t* path, int perms, int& anErrno);

	virtual int unlink (const wchar_t* path, int& anErrno);

	virtual int stat (const wchar_t* name, struct stat* st, int& anErrno);

	virtual int rename (const wchar_t* oldname, const wchar_t* newname, int& anErrno);

	virtual TInt ResolvePath (TParse& aResult, const wchar_t* path, TDes* aFilename);

	virtual int socket (int family, int style, int protocol, int& anErrno);

	virtual int recvfrom (int fd, char* buf, unsigned long cnt, int flags, struct sockaddr* from, unsigned long* fromsize, int& anErrno);

	virtual int sendto (int fd, const char* buf, unsigned long cnt, int flags, struct sockaddr* to, unsigned long tosize, int& anErrno);

	virtual int shutdown (int fd, int how, int& anErrno);

	virtual int listen (int fd, int n, int& anErrno);

	virtual int accept (int fd, int& anErrno);

	virtual int bind (int fd, struct sockaddr* addr, unsigned long size, int& anErrno);

	virtual int connect (int fd, struct sockaddr* addr, unsigned long size, int& anErrno);

	virtual int sockname (int fd, struct sockaddr* addr, unsigned long* size, int anEnd, int& anErrno);

	virtual int getsockopt (int fd, int level, int opt, void* buf, unsigned long* len, int& anErrno);

	virtual int setsockopt (int fd, int level, int opt, void* buf, unsigned long len, int& anErrno);

	virtual wchar_t* getenv (const wchar_t* name); 

	virtual void unsetenv (const wchar_t* name);

	virtual int setenv (const wchar_t* name, const wchar_t* value, int rewrite, int& anErrno);

	virtual int popen3 (const wchar_t *file, const wchar_t *cmd, const wchar_t *mode, wchar_t** envp, int fids[3], int& anErrno);

	virtual int waitpid (int pid, int* status, int options, int& anErrno);

private: 

	CLocalSystemInterface();	

	void ConstructL();		

private:

	TInt iUseCount;

	CFileTable iFids;

	RFs iFs;

	RSocketServ iSs;

	RCommServ	iCs;

	CEnvironment iEnv;

	};

#include <sys/reent.h>

/**

@internalComponent

*/

inline MSystemInterface& Interface(struct _reent* r)

	{ return (*REINTERPRET_CAST(MSystemInterface*,r->_system)); }