Tcl Source Code

potentially-unsafe core functionality (both commands and variables)
from \fIinterp\fR.  However, it cannot know what parts of an extension
or application are safe and does not make any attempt to remove those
parts, so safety is not guaranteed after calling \fBTcl_MakeSafe\fR.
Callers will want to take care with their use of \fBTcl_MakeSafe\fR
to avoid false claims of safety.  For many situations, \fBTcl_CreateChild\fR
may be a better choice, since it creates interpreters in a known-safe state.
\fBTcl_MakeSafe\fR is deprecated and will be removed in Tcl 9.0.
.PP
\fBTcl_GetChild\fR returns a pointer to a child interpreter of
\fIinterp\fR. The child interpreter is identified by \fIname\fR.
If no such child interpreter exists, \fBNULL\fR is returned.
.PP
\fBTcl_GetSlave\fR is a synonym for \fBTcl_GetChild\fR.
.PP

#  declare 188 {
#	Tcl_MainLoop
#  }

declare 189 {
    Tcl_Channel Tcl_MakeFileChannel(void *handle, int mode)
}
declare 190 {deprecated {}} {
    int Tcl_MakeSafe(Tcl_Interp *interp)
}
declare 191 {
    Tcl_Channel Tcl_MakeTcpClientChannel(void *tcpSocket)
}
declare 192 {
    char *Tcl_Merge(int argc, const char *const *argv)

/* 187 */
EXTERN int		Tcl_LinkVar(Tcl_Interp *interp, const char *varName,
				void *addr, int type);
/* Slot 188 is reserved */
/* 189 */
EXTERN Tcl_Channel	Tcl_MakeFileChannel(void *handle, int mode);
/* 190 */
TCL_DEPRECATED("")
int			Tcl_MakeSafe(Tcl_Interp *interp);
/* 191 */
EXTERN Tcl_Channel	Tcl_MakeTcpClientChannel(void *tcpSocket);
/* 192 */
EXTERN char *		Tcl_Merge(int argc, const char *const *argv);
/* 193 */
EXTERN Tcl_HashEntry *	Tcl_NextHashEntry(Tcl_HashSearch *searchPtr);
/* 194 */

    int (*tcl_InputBuffered) (Tcl_Channel chan); /* 183 */
    int (*tcl_InterpDeleted) (Tcl_Interp *interp); /* 184 */
    int (*tcl_IsSafe) (Tcl_Interp *interp); /* 185 */
    char * (*tcl_JoinPath) (int argc, const char *const *argv, Tcl_DString *resultPtr); /* 186 */
    int (*tcl_LinkVar) (Tcl_Interp *interp, const char *varName, void *addr, int type); /* 187 */
    void (*reserved188)(void);
    Tcl_Channel (*tcl_MakeFileChannel) (void *handle, int mode); /* 189 */
    TCL_DEPRECATED_API("") int (*tcl_MakeSafe) (Tcl_Interp *interp); /* 190 */
    Tcl_Channel (*tcl_MakeTcpClientChannel) (void *tcpSocket); /* 191 */
    char * (*tcl_Merge) (int argc, const char *const *argv); /* 192 */
    Tcl_HashEntry * (*tcl_NextHashEntry) (Tcl_HashSearch *searchPtr); /* 193 */
    void (*tcl_NotifyChannel) (Tcl_Channel channel, int mask); /* 194 */
    Tcl_Obj * (*tcl_ObjGetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags); /* 195 */
    Tcl_Obj * (*tcl_ObjSetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr, int flags); /* 196 */
    Tcl_Channel (*tcl_OpenCommandChannel) (Tcl_Interp *interp, int argc, const char **argv, int flags); /* 197 */

MODULE_SCOPE Tcl_Obj *	TclLsetList(Tcl_Interp *interp, Tcl_Obj *listPtr,
			    Tcl_Obj *indexPtr, Tcl_Obj *valuePtr);
MODULE_SCOPE Tcl_Obj *	TclLsetFlat(Tcl_Interp *interp, Tcl_Obj *listPtr,
			    int indexCount, Tcl_Obj *const indexArray[],
			    Tcl_Obj *valuePtr);
MODULE_SCOPE Tcl_Command TclMakeEnsemble(Tcl_Interp *interp, const char *name,
			    const EnsembleImplMap map[]);
MODULE_SCOPE int TclMakeSafe(Tcl_Interp *interp);

MODULE_SCOPE int	TclMaxListLength(const char *bytes, int numBytes,
			    const char **endPtr);
MODULE_SCOPE int	TclMergeReturnOptions(Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[], Tcl_Obj **optionsPtrPtr,
			    int *codePtr, int *levelPtr);
MODULE_SCOPE Tcl_Obj *  TclNoErrorStack(Tcl_Interp *interp, Tcl_Obj *options);
MODULE_SCOPE int	TclNokia770Doubles(void);

     * Inherit the recursion limit.
     */

    ((Interp *) childInterp)->maxNestingDepth =
	    ((Interp *) parentInterp)->maxNestingDepth;

    if (safe) {
	if (TclMakeSafe(childInterp) == TCL_ERROR) {
	    goto error;
	}
    } else {
	if (Tcl_Init(childInterp) == TCL_ERROR) {
	    goto error;
	}

    }
    return (iPtr->flags & SAFE_INTERP) ? 1 : 0;
}

/*
 *----------------------------------------------------------------------
 *
 * TclMakeSafe --
 *
 *	Makes its argument interpreter contain only functionality that is
 *	defined to be part of Safe Tcl. Unsafe commands are hidden, the env
 *	array is unset, and the standard channels are removed.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Hides commands in its argument interpreter, and removes settings and
 *	channels.
 *
 *----------------------------------------------------------------------
 */

int
TclMakeSafe(
    Tcl_Interp *interp)		/* Interpreter to be made safe. */
{
    Tcl_Channel chan;		/* Channel to remove from safe interpreter. */
    Interp *iPtr = (Interp *) interp;
    Tcl_Interp *parent = ((InterpInfo*) iPtr->interpInfo)->child.parentInterp;

    TclHideUnsafeCommands(interp);

#   define TclBN_s_mp_add 0
#   undef TclBN_s_mp_mul_digs
#   define TclBN_s_mp_mul_digs 0
#   undef TclBN_s_mp_sqr
#   define TclBN_s_mp_sqr 0
#   undef TclBN_s_mp_sub
#   define TclBN_s_mp_sub 0
#   define Tcl_MakeSafe 0
#else /* TCL_NO_DEPRECATED */
#   define Tcl_SeekOld seekOld
#   define Tcl_TellOld tellOld
#   define TclBackgroundException Tcl_BackgroundException
#   define TclSetStartupScript Tcl_SetStartupScript
#   define TclGetStartupScript Tcl_GetStartupScript
#   define TclGetIntForIndex Tcl_GetIntForIndex

#   define TclGetGlobalNamespace_ Tcl_GetGlobalNamespace
#   define TclFindNamespace Tcl_FindNamespace
#   define TclFindCommand Tcl_FindCommand
#   define TclGetCommandFromObj Tcl_GetCommandFromObj
#   define TclGetCommandFullName Tcl_GetCommandFullName
#   define TclpLocaltime_unix TclpLocaltime
#   define TclpGmtime_unix TclpGmtime
#   define Tcl_MakeSafe TclMakeSafe

static int
seekOld(
    Tcl_Channel chan,		/* The channel on which to seek. */
    int offset,			/* Offset to seek to. */
    int mode)			/* Relative to which location to seek? */
{