/*

* 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:

*

*/

#ifndef SYSIF_H

#define SYSIF_H

#include <e32std.h>

#include <e32base.h>

#include <f32file.h>

#include <es_sock.h>

#include <c32comm.h>

#include <sys/select.h>

#include <spawn.h>

#include <sys/types.h>

#include <wchar.h>

#include "ipcclient.h"

#include <dirent.h>

#include <sys/socket.h>

#include <stdapis/net/if.h>

#include <commdb.h>

#include <commdbconnpref.h>

#include <rpipe.h>

#ifdef SYMBIAN_OE_POSIX_SIGNALS

#include "signalclient.h"

#include "tsignalmessage.h"

typedef void (*TSignalHandler)(int);

typedef void (*TSignalAction)(int, siginfo_t *, void *);

#endif

/*

@internalComponent

*/

_LIT(KEstlibInit, "STDLIBS-INIT");

_LIT(KFDTransferSvr,"FDTrnsfrSvr");

//Forward declaration for references below

class RPipe;

class CFileDesTransferServer;

class RFileDesTransferSession;

class CFileDescBase;

/* TODO: We don't have to do this in CFileTable. Move to methods */

class CFileSocketDesc;

struct TChild

/*

@internalComponent

*/

	{

	TInt iFid;

	TProcessId iPid;

	RProcess iProc;

#ifdef __X86GCC__

	// The underlying data for a TProcessId is a TUint64. GCC raises an error if this is intialised to a negative value. Consider changing for all platforms.

	TChild(TInt aFid = -1, TProcessId aPid = 0) : iFid(aFid), iPid(aPid)

#else

	TChild(TInt aFid = -1, TProcessId aPid = -1) : iFid(aFid), iPid(aPid)

#endif //__X86GCC__

		{

		// nada

		}

#ifdef __X86GCC__

	// The underlying data for a TProcessId is a TUint64. GCC raises an error if this is intialised to a negative value. Consider changing for all platforms.

	TChild(RProcess &aProc, TProcessId aFid = 0) : iProc(aProc), iFid(aFid)

#else

	TChild(RProcess &aProc, TProcessId aFid = -1) : iProc(aProc), iFid(aFid)

#endif //__X86GCC__

		{

		iPid = aProc.Id();

		}

	static TBool MatchByFid(const TChild& aChild1, const TChild& aChild2)

		{

		if (aChild1.iFid == aChild2.iFid)

			{

			return ETrue;

			}

		return EFalse;

		}

	static TBool MatchByPid(const TChild& aChild1, const TChild& aChild2)

		{

		if (aChild1.iPid == aChild2.iPid)

			{

			return ETrue;

			}

		return EFalse;

		}

	};

class TCLSICleanup

/*

@internalComponent

*/

	{

public:

	void StorePtrs(RHeap* aHeap, RFs* aFs, RSocketServ* aSs, RCommServ* aCs, RFastLock* aSsLock, RFastLock* aCsLock)

		{

		iHeap = aHeap;

		iFs = aFs;

		iSs = aSs;

		iCs = aCs;

		iSsLock = aSsLock;

		iCsLock = aCsLock;

		}

	~TCLSICleanup()

		{

		iFs->Close();

		iSs->Close();

		iSsLock->Close();

		iCs->Close();

		iCsLock->Close();

		iHeap->Close();

		}

private:

	RHeap* iHeap;

	RFs* iFs;

	RSocketServ* iSs;

	RCommServ* iCs;

	RFastLock* iSsLock;

	RFastLock* iCsLock;

	};

class TFileTableCleanup

{

public:

	void SaveUserHeap(RHeap* aHeap)

		{

		iUserHeap = aHeap;

		}

	~TFileTableCleanup()

	{

		User::SwitchHeap(iUserHeap);

	}

private:

	RHeap* iUserHeap;

};

class CFileTable

/*

@internalComponent

*/

	{

public:

	CFileTable();

	~CFileTable();

	TInt Init(RHeap* aHeap = NULL);

	void Close();

	void Default(CFileDescBase* aRedirMedia, CFileDescBase* aStdErrMedia);

	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 fid1, int fid2, int& anErrno);

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

	int close (int fid, int& anErrno);

	int UserClose (int fid, int& anErrno);

	off_t lseek (int fid, off_t 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, const struct sockaddr* addr, unsigned long size, int& anErrno);

	int sockname (int fd, struct sockaddr* address, unsigned long* aAddrLen,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);

	int fcntl (int aFid, int aCmd, long anArg, int& anErrno);

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

	int popen (const wchar_t* file, const wchar_t* cmd,const char* mode, int& anErrno);

	int pclose (int aFid, int& anErrno);

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

	int system (const wchar_t* aCmd, const wchar_t* aCmdArg, int& anErrno);

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

	int posix_spawn (int* pid, const wchar_t* wpath,

					 const posix_spawn_file_actions_t* file_actions,

					 const posix_spawnattr_t* attrp,

					 const wchar_t* wargs, wchar_t** wenvp);

	void TransferToChild (RProcess& child, TInt aFds[], TInt aWhich, TInt aSlot);

	void PassEnvToChild (RProcess& child, wchar_t** aEnvp);

	void PassFileActionsToChild (RProcess& child,

								 const posix_spawn_file_actions_t* aFileActions);

#ifdef SYMBIAN_OE_POSIX_SIGNALS

	void TransferSigMaskToChild(RProcess& childproc,TDes& sigmask);

	void CheckOrigins (wchar_t**& wenvp, int& aCount, TUint64 & aSigMask);

#else

	void CheckOrigins (wchar_t**& wenvp, int& aCount);

#endif

	TInt InheritFiles(CFileDesTransferServer* server);

	int pipe (int fildes[2], int& anErrno);

	int mkfifo (const wchar_t *pathname, mode_t mode, int& anErrno, RFs& aFs);

	int CreatePipeDesc (int fildes, RPipe& aHandle, TUint16 aMode = 0);

	void ClosePipe (int fds[2], int& err);

	static CFileDescBase* FifoOpen (const wchar_t* pathName, mode_t mode, int perms, int& anErrno);

	int link (const wchar_t *oldpathName, const wchar_t *newpathName, int& anErrno, RFs& aFs);

	static CFileDescBase* LinkOpen (const wchar_t* pathName, mode_t mode, int perms, int& anErrno, RFs& aFs);

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

	int AcceptFileSocket(CFileSocketDesc* pfs, const struct sockaddr_un* addr, int& anErrno, RFs& aFs);

	TInt RConnectionCount();

	TInt RConnectionAt (TInt aRcIndex, RConnection *&aRc);

	TInt AddRConnectionPtr (RConnection *aRc, TInt &aRcIndex);

	void RemoveRConnectionPtrAt (TInt aRcIndex);

	void DeleteRConnectionList();

	CFileDesTransferServer* NewFDTransferServerL(RSemaphore &sem);

	void StartFDTransferServer(CFileDesTransferServer* pServer);

	void CloseFDTransferServer(CFileDesTransferServer* pServer);

	int SetEcho(int aFd, TUint8 aEcho, int& aErrno);

	void DoTransferAll(RSemaphore &sem,TDesC& name);

	TInt GetFileCount() const

		{

		return iFids.Count();

		}

	void Lock()

		{

		iFidLock.Wait();

		}

	void Unlock()

		{

		iFidLock.Signal();

		}

private:

	TFileTableCleanup	iCleanup;

	CArrayPtrSeg<CFileDescBase> iFids;

	// invoked by dup

	TInt Dup(TInt aFid);

	// invoked by both dup2 and fcntl with F_DUPFD

	TInt Dup2(TInt aFid, TInt aFid2, TBool aCloseFid2);

	// the real dup-er.

    TInt DupFd(TInt aFid1, TInt aFid2);

	void Release(TInt aFid);

	//Lock for protecting FIDs across threads

	RFastLock iFidLock;

	//stores pids of all children of this process

	RArray<TChild> iChildren;

	//Methods to manipulate iChildren

	void AddChild(const TChild& aChild);

	void RemoveChild(TInt aIdx);

	void ExpandFTableL(TInt count);

	const RArray<TChild>& GetChildren() const

		{

		return iChildren;

		}

	TInt FindChild(const TInt aFid) const

		{

		return iChildren.Find(TChild(aFid),

							  TIdentityRelation<TChild>(TChild::MatchByFid));

		}

	TInt FindChild(const TProcessId aPid) const

		{

		return iChildren.Find(TChild(-1, aPid),

							  TIdentityRelation<TChild>(TChild::MatchByPid));

		}

	CArrayPtrSeg<RConnection> iRConnectionList;

	//Lock for protecting iRConnectionList across threads

	RFastLock iRcLock;

	// A pointer to the private heap

	RHeap* iPrivateHeap;

	friend class CFileDesTransferSession;

	};

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 reg_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(TParse& aResult, const wchar_t* path, TDes* aFilename);

	static TInt SetDefaultDir(RFs& aFs);

	static TInt CreateDefaultPrivatePath(RFs& aFs);

	static int utime(RFs& aFs, const wchar_t* name, const struct utimbuf* filetimes, int& anErrno);

	};

class TAccessPointRecord

	{

public:	

	TUint32 iId;

	TBuf<KCommsDbSvrMaxColumnNameLength> iName;

	TUint32 iDialogPref;

	TUint32 iDirection;

	TUint32 iService;

	TBuf<KCommsDbSvrMaxColumnNameLength> iServiceType;

	TUint32 iBearer;

	TBuf<KCommsDbSvrMaxColumnNameLength> iBearerType;

	TUint32 iNetwork;

	TUint32 iNetworkWeighting;

	TUint32 iLocation;

public:

	TAccessPointRecord();

	};

// This structure encapsulates an aselect request

NONSHARABLE_STRUCT ( TaselectRequestInfo )

	{

	TThreadId iId;

	int iMaxFd;

	fd_set* iReadFds;

	fd_set* iWriteFds;

	fd_set* iExceptFds;

	struct timeval *itvptr;

	TRequestStatus* iRequestStatus;

	};

// Holds the information about aselect requests, this used required

// for cancellation of the aselect requests

NONSHARABLE_CLASS ( TASelectRequest )

	{

public:

	// Thread id of the thread processing the aselect

	TThreadId iThreadId;

	// Request object used for the request

	TRequestStatus* iRequestStatus;

	};

NONSHARABLE_CLASS(CLocalSystemInterface) : public CBase

/*

@internalComponent

*/

	{

public:

	IMPORT_C CLocalSystemInterface();

	IMPORT_C ~CLocalSystemInterface();

#ifdef __SYMBIAN_COMPILE_UNUSED__

	CLocalSystemInterface& Clone();

	void Release();

	void TerminateProcess(int status);

#endif //__SYMBIAN_COMPILE_UNUSED__

	int AddToDirList(DIR *aDir);

	int RemoveDirFromList(DIR* aDir);

	int FindInDirList(DIR* aDir);

	void Exit(int code);

	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);

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

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

	int fsync (int fid, int& anErrno);

	int close (int fid, int& anErrno);

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

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

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

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

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

#ifdef __SYMBIAN_COMPILE_UNUSED__

	int ioctl_cancel (int fid, int& anErrno);

#endif //__SYMBIAN_COMPILE_UNUSED__

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

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

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

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

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

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

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

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

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

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

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

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

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

	int accept (int fd, struct sockaddr *addr, size_t *size, int& anErrno);

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

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

	int sockname (int fd, struct sockaddr* addr, unsigned long* size, 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 popen3 (const wchar_t *file, const wchar_t *cmd, wchar_t** envp, int fids[3], int& anErrno);

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

	int fcntl (int aFid, int aCmd, long anArg, int& anErrno);

	int utime (const wchar_t* name, const struct utimbuf* filetimes, int& anErrno);

	int popen (const wchar_t* file, const wchar_t* cmd, const char* mode, int& anErrno);

	int pclose (int aFid, int& anErrno);

	IMPORT_C void CheckOrigins (wchar_t**& wenvp, int& aCount);

#ifdef SYMBIAN_OE_POSIX_SIGNALS

	TInt SignalHandler();

	IMPORT_C void InitSignalHandler();

	void RegisterExitNotification(TProcessId aPid);

	inline TUint64 GetSigMask()const

	{

		return iSigMask;

	}

	int kill(pid_t pid, int sig, int& anErrno);

	int raise(int sig, int& anErrno);

	int sigqueue(pid_t pid, int sig, const union sigval val, int& anErrno);

	int sigfillset(sigset_t *set, int& anErrno);

	int sigaddset(sigset_t *set, int signo, int& anErrno);

	int sigdelset(sigset_t *set, int signo, int& anErrno);

	int sigismember(const sigset_t *set, int signo, int& anErrno);

	int sigandset(sigset_t * set, const sigset_t * left, const sigset_t * right, int& anErrno);

	int sigorset(sigset_t * set, const sigset_t * left, const sigset_t * right, int& anErrno);

	int sigisemptyset(const sigset_t * set, int& anErrno);

	int sigemptyset(sigset_t * set, int& anErrno);

	int sigprocmask(int how, const sigset_t *set, sigset_t *oset, int& anErrno);

	int sighold(int signo, int& anErrno);

	int sigrelse(int signo, int& anErrno);

	int sigpause(int signo, int& anErrno);

	int sigwait(const sigset_t *set, int *sig, int& anErrno);

	int sigtimedwait(const sigset_t *set, siginfo_t *info, const struct timespec *timeout, int& anErrno);

	int sigwaitinfo(const sigset_t *set, siginfo_t *info, int& anErrno);

	int sigaction(int sig, const struct sigaction *act, struct sigaction *oact, int& anErrno);

	TSignalHandler sigset(int aSigNum, TSignalHandler disp, int& anErrno);

	TSignalHandler bsd_signal(int aSigNum, TSignalHandler aFunc,int& anErrno);

	TSignalHandler signal(int aSigNum, TSignalHandler aFunc,int& anErrno);

	int sigignore(int aSigNum, int& anErrno);

	unsigned int alarm(unsigned int seconds);

	int sigpending(sigset_t *set,int& anErrno);

#ifdef SYMBIAN_OE_LIBRT	

	//start timers...

	IMPORT_C TInt AddTimer(const TInt& aTimerId);

	IMPORT_C TInt DeleteTimer(const TInt& aTimerId);

	IMPORT_C TInt IncrementOverrun(const TInt& aTimerId);

	IMPORT_C TInt ResetOverrun(const TInt& aTimerId);

	IMPORT_C TInt Overrun(const TInt& aTimerId);

	IMPORT_C TInt RaiseTimerSignal(int sig, int timerid);

	//end timers

#endif //SYMBIAN_OE_LIBRT

#endif // SYMBIAN_OE_POSIX_SIGNALS

    int pipe (int fildes[2], int& anErrno );

    int mkfifo (const wchar_t *pathname, mode_t mode, int& anErrno);

    int link (const wchar_t *oldpathName, const wchar_t *newpathName, int& anErrno );

    int unlink (const wchar_t *pathName, int& anErrno );

	int select (int maxfd, fd_set* readfds,fd_set* writefds,fd_set* exceptfds, struct timeval* tvptr, int& anErrno);

	int aselect(int maxfd, fd_set *readfds, fd_set *writefds,fd_set *exceptfds, struct timeval *tvptr, TRequestStatus* requeststatus,int& anErrno);

	int cancelaselect(TRequestStatus* requeststatus,int& anErrno,int performcleanup = 0);

	int eselect(int maxfd, fd_set *readfds, fd_set *writefds,fd_set *exceptfds, struct timeval *tvptr, int arraycount,TRequestStatus* waitarray,int& anErrno);

	static TInt handleaselect(TAny* aPtr);

	RArray<TASelectRequest>& ASelectRequest();

	RFastLock& ASelectLock();

	int system (const wchar_t* aCmd, const wchar_t* aCmdArg, int& anErrno );

	const wchar_t* GetDirName (int aFid);

	IMPORT_C int Truncate (int aFid, off_t anOffset, int& anErrno);

	int fchmod (int fd , mode_t  perms, int& anErrno);

	int posix_spawn (int* pid, const wchar_t* wpath,

					 const posix_spawn_file_actions_t* file_actions,

					 const posix_spawnattr_t* attrp,

					 const wchar_t* wargs, wchar_t** wenvp);

	int SetEcho(int aFd, TUint8 aEcho, int& aErrno);

	//Set the default interface for network operations

	int setdefaultif(const struct ifreq* aIfReq);