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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclinterp.c,v 1.1.1.1 2001/06/13 04:40:36 dtashley Exp $ */ |
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/* |
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* tclInterp.c -- |
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* |
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* This file implements the "interp" command which allows creation |
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* and manipulation of Tcl interpreters from within Tcl scripts. |
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* |
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* Copyright (c) 1995-1997 Sun Microsystems, Inc. |
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* |
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* See the file "license.terms" for information on usage and redistribution |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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* |
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* RCS: @(#) $Id: tclinterp.c,v 1.1.1.1 2001/06/13 04:40:36 dtashley Exp $ |
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*/ |
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#include <stdio.h> |
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#include "tclInt.h" |
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#include "tclPort.h" |
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/* |
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* Counter for how many aliases were created (global) |
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*/ |
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static int aliasCounter = 0; |
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TCL_DECLARE_MUTEX(cntMutex) |
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/* |
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* struct Alias: |
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* |
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* Stores information about an alias. Is stored in the slave interpreter |
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* and used by the source command to find the target command in the master |
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* when the source command is invoked. |
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*/ |
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typedef struct Alias { |
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Tcl_Obj *namePtr; /* Name of alias command in slave interp. */ |
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Tcl_Interp *targetInterp; /* Interp in which target command will be |
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* invoked. */ |
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Tcl_Obj *prefixPtr; /* Tcl list making up the prefix of the |
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* target command to be invoked in the target |
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* interpreter. Additional arguments |
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* specified when calling the alias in the |
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* slave interp will be appended to the prefix |
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* before the command is invoked. */ |
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Tcl_Command slaveCmd; /* Source command in slave interpreter, |
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* bound to command that invokes the target |
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* command in the target interpreter. */ |
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Tcl_HashEntry *aliasEntryPtr; |
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/* Entry for the alias hash table in slave. |
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* This is used by alias deletion to remove |
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* the alias from the slave interpreter |
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* alias table. */ |
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Tcl_HashEntry *targetEntryPtr; |
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/* Entry for target command in master. |
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* This is used in the master interpreter to |
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* map back from the target command to aliases |
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* redirecting to it. Random access to this |
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* hash table is never required - we are using |
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* a hash table only for convenience. */ |
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} Alias; |
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/* |
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* |
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* struct Slave: |
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* |
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* Used by the "interp" command to record and find information about slave |
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* interpreters. Maps from a command name in the master to information about |
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* a slave interpreter, e.g. what aliases are defined in it. |
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*/ |
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typedef struct Slave { |
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Tcl_Interp *masterInterp; /* Master interpreter for this slave. */ |
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Tcl_HashEntry *slaveEntryPtr; |
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/* Hash entry in masters slave table for |
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* this slave interpreter. Used to find |
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* this record, and used when deleting the |
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* slave interpreter to delete it from the |
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* master's table. */ |
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Tcl_Interp *slaveInterp; /* The slave interpreter. */ |
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Tcl_Command interpCmd; /* Interpreter object command. */ |
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Tcl_HashTable aliasTable; /* Table which maps from names of commands |
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* in slave interpreter to struct Alias |
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* defined below. */ |
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} Slave; |
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/* |
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* struct Target: |
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* |
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* Maps from master interpreter commands back to the source commands in slave |
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* interpreters. This is needed because aliases can be created between sibling |
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* interpreters and must be deleted when the target interpreter is deleted. In |
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* case they would not be deleted the source interpreter would be left with a |
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* "dangling pointer". One such record is stored in the Master record of the |
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* master interpreter (in the targetTable hashtable, see below) with the |
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* master for each alias which directs to a command in the master. These |
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* records are used to remove the source command for an from a slave if/when |
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* the master is deleted. |
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*/ |
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typedef struct Target { |
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Tcl_Command slaveCmd; /* Command for alias in slave interp. */ |
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Tcl_Interp *slaveInterp; /* Slave Interpreter. */ |
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} Target; |
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/* |
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* struct Master: |
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* |
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* This record is used for two purposes: First, slaveTable (a hashtable) |
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* maps from names of commands to slave interpreters. This hashtable is |
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* used to store information about slave interpreters of this interpreter, |
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* to map over all slaves, etc. The second purpose is to store information |
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* about all aliases in slaves (or siblings) which direct to target commands |
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* in this interpreter (using the targetTable hashtable). |
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* |
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* NB: the flags field in the interp structure, used with SAFE_INTERP |
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* mask denotes whether the interpreter is safe or not. Safe |
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* interpreters have restricted functionality, can only create safe slave |
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* interpreters and can only load safe extensions. |
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*/ |
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typedef struct Master { |
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Tcl_HashTable slaveTable; /* Hash table for slave interpreters. |
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* Maps from command names to Slave records. */ |
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Tcl_HashTable targetTable; /* Hash table for Target Records. Contains |
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* all Target records which denote aliases |
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* from slaves or sibling interpreters that |
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* direct to commands in this interpreter. This |
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* table is used to remove dangling pointers |
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* from the slave (or sibling) interpreters |
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* when this interpreter is deleted. */ |
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} Master; |
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/* |
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* The following structure keeps track of all the Master and Slave information |
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* on a per-interp basis. |
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*/ |
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typedef struct InterpInfo { |
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Master master; /* Keeps track of all interps for which this |
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* interp is the Master. */ |
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Slave slave; /* Information necessary for this interp to |
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* function as a slave. */ |
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} InterpInfo; |
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/* |
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* Prototypes for local static procedures: |
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*/ |
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static int AliasCreate _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, Tcl_Interp *masterInterp, |
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Tcl_Obj *namePtr, Tcl_Obj *targetPtr, int objc, |
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Tcl_Obj *CONST objv[])); |
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static int AliasDelete _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, Tcl_Obj *namePtr)); |
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static int AliasDescribe _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, Tcl_Obj *objPtr)); |
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static int AliasList _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp)); |
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static int AliasObjCmd _ANSI_ARGS_((ClientData dummy, |
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Tcl_Interp *currentInterp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static void AliasObjCmdDeleteProc _ANSI_ARGS_(( |
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ClientData clientData)); |
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static Tcl_Interp * GetInterp _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Obj *pathPtr)); |
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static Tcl_Interp * GetInterp2 _ANSI_ARGS_((Tcl_Interp *interp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static void InterpInfoDeleteProc _ANSI_ARGS_(( |
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ClientData clientData, Tcl_Interp *interp)); |
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static Tcl_Interp * SlaveCreate _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Obj *pathPtr, int safe)); |
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static int SlaveEval _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static int SlaveExpose _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static int SlaveHide _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static int SlaveHidden _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp)); |
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static int SlaveInvokeHidden _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp, int global, int objc, |
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Tcl_Obj *CONST objv[])); |
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static int SlaveMarkTrusted _ANSI_ARGS_((Tcl_Interp *interp, |
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Tcl_Interp *slaveInterp)); |
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static int SlaveObjCmd _ANSI_ARGS_((ClientData dummy, |
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Tcl_Interp *interp, int objc, |
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Tcl_Obj *CONST objv[])); |
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static void SlaveObjCmdDeleteProc _ANSI_ARGS_(( |
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ClientData clientData)); |
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/* |
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*--------------------------------------------------------------------------- |
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* |
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* TclInterpInit -- |
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* |
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* Initializes the invoking interpreter for using the master, slave |
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* and safe interp facilities. This is called from inside |
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* Tcl_CreateInterp(). |
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* |
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* Results: |
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* Always returns TCL_OK for backwards compatibility. |
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* |
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* Side effects: |
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* Adds the "interp" command to an interpreter and initializes the |
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* interpInfoPtr field of the invoking interpreter. |
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* |
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*--------------------------------------------------------------------------- |
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*/ |
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int |
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TclInterpInit(interp) |
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Tcl_Interp *interp; /* Interpreter to initialize. */ |
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{ |
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InterpInfo *interpInfoPtr; |
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Master *masterPtr; |
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Slave *slavePtr; |
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interpInfoPtr = (InterpInfo *) ckalloc(sizeof(InterpInfo)); |
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((Interp *) interp)->interpInfo = (ClientData) interpInfoPtr; |
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masterPtr = &interpInfoPtr->master; |
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Tcl_InitHashTable(&masterPtr->slaveTable, TCL_STRING_KEYS); |
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Tcl_InitHashTable(&masterPtr->targetTable, TCL_ONE_WORD_KEYS); |
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slavePtr = &interpInfoPtr->slave; |
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slavePtr->masterInterp = NULL; |
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slavePtr->slaveEntryPtr = NULL; |
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slavePtr->slaveInterp = interp; |
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slavePtr->interpCmd = NULL; |
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Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); |
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Tcl_CreateObjCommand(interp, "interp", Tcl_InterpObjCmd, NULL, NULL); |
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Tcl_CallWhenDeleted(interp, InterpInfoDeleteProc, NULL); |
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return TCL_OK; |
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} |
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/* |
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*--------------------------------------------------------------------------- |
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* |
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* InterpInfoDeleteProc -- |
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* |
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* Invoked when an interpreter is being deleted. It releases all |
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* storage used by the master/slave/safe interpreter facilities. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* Cleans up storage. Sets the interpInfoPtr field of the interp |
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* to NULL. |
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* |
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*--------------------------------------------------------------------------- |
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*/ |
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static void |
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InterpInfoDeleteProc(clientData, interp) |
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ClientData clientData; /* Ignored. */ |
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Tcl_Interp *interp; /* Interp being deleted. All commands for |
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* slave interps should already be deleted. */ |
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{ |
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InterpInfo *interpInfoPtr; |
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Slave *slavePtr; |
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Master *masterPtr; |
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Tcl_HashSearch hSearch; |
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Tcl_HashEntry *hPtr; |
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Target *targetPtr; |
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interpInfoPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
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/* |
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* There shouldn't be any commands left. |
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*/ |
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masterPtr = &interpInfoPtr->master; |
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if (masterPtr->slaveTable.numEntries != 0) { |
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panic("InterpInfoDeleteProc: still exist commands"); |
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} |
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Tcl_DeleteHashTable(&masterPtr->slaveTable); |
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/* |
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* Tell any interps that have aliases to this interp that they should |
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* delete those aliases. If the other interp was already dead, it |
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* would have removed the target record already. |
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*/ |
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hPtr = Tcl_FirstHashEntry(&masterPtr->targetTable, &hSearch); |
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while (hPtr != NULL) { |
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targetPtr = (Target *) Tcl_GetHashValue(hPtr); |
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Tcl_DeleteCommandFromToken(targetPtr->slaveInterp, |
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targetPtr->slaveCmd); |
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hPtr = Tcl_NextHashEntry(&hSearch); |
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} |
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Tcl_DeleteHashTable(&masterPtr->targetTable); |
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slavePtr = &interpInfoPtr->slave; |
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if (slavePtr->interpCmd != NULL) { |
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/* |
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* Tcl_DeleteInterp() was called on this interpreter, rather |
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* "interp delete" or the equivalent deletion of the command in the |
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* master. First ensure that the cleanup callback doesn't try to |
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* delete the interp again. |
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*/ |
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slavePtr->slaveInterp = NULL; |
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Tcl_DeleteCommandFromToken(slavePtr->masterInterp, |
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slavePtr->interpCmd); |
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} |
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/* |
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* There shouldn't be any aliases left. |
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*/ |
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if (slavePtr->aliasTable.numEntries != 0) { |
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panic("InterpInfoDeleteProc: still exist aliases"); |
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} |
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Tcl_DeleteHashTable(&slavePtr->aliasTable); |
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ckfree((char *) interpInfoPtr); |
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} |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tcl_InterpObjCmd -- |
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* |
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* This procedure is invoked to process the "interp" Tcl command. |
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* See the user documentation for details on what it does. |
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* |
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* Results: |
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* A standard Tcl result. |
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* |
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* Side effects: |
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* See the user documentation. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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/* ARGSUSED */ |
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int |
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Tcl_InterpObjCmd(clientData, interp, objc, objv) |
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ClientData clientData; /* Unused. */ |
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Tcl_Interp *interp; /* Current interpreter. */ |
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int objc; /* Number of arguments. */ |
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Tcl_Obj *CONST objv[]; /* Argument objects. */ |
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{ |
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int index; |
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static char *options[] = { |
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"alias", "aliases", "create", "delete", |
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"eval", "exists", "expose", "hide", |
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"hidden", "issafe", "invokehidden", "marktrusted", |
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"slaves", "share", "target", "transfer", |
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NULL |
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}; |
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enum option { |
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OPT_ALIAS, OPT_ALIASES, OPT_CREATE, OPT_DELETE, |
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OPT_EVAL, OPT_EXISTS, OPT_EXPOSE, OPT_HIDE, |
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OPT_HIDDEN, OPT_ISSAFE, OPT_INVOKEHID, OPT_MARKTRUSTED, |
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OPT_SLAVES, OPT_SHARE, OPT_TARGET, OPT_TRANSFER |
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}; |
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if (objc < 2) { |
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Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?"); |
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return TCL_ERROR; |
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} |
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if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, |
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&index) != TCL_OK) { |
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return TCL_ERROR; |
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} |
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switch ((enum option) index) { |
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case OPT_ALIAS: { |
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Tcl_Interp *slaveInterp, *masterInterp; |
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if (objc < 4) { |
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aliasArgs: |
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Tcl_WrongNumArgs(interp, 2, objv, |
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"slavePath slaveCmd ?masterPath masterCmd? ?args ..?"); |
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return TCL_ERROR; |
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} |
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slaveInterp = GetInterp(interp, objv[2]); |
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if (slaveInterp == (Tcl_Interp *) NULL) { |
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return TCL_ERROR; |
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} |
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if (objc == 4) { |
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return AliasDescribe(interp, slaveInterp, objv[3]); |
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} |
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if ((objc == 5) && (Tcl_GetString(objv[4])[0] == '\0')) { |
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return AliasDelete(interp, slaveInterp, objv[3]); |
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} |
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if (objc > 5) { |
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masterInterp = GetInterp(interp, objv[4]); |
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if (masterInterp == (Tcl_Interp *) NULL) { |
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return TCL_ERROR; |
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} |
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if (Tcl_GetString(objv[5])[0] == '\0') { |
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if (objc == 6) { |
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return AliasDelete(interp, slaveInterp, objv[3]); |
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} |
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} else { |
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return AliasCreate(interp, slaveInterp, masterInterp, |
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objv[3], objv[5], objc - 6, objv + 6); |
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} |
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} |
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goto aliasArgs; |
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} |
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case OPT_ALIASES: { |
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Tcl_Interp *slaveInterp; |
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slaveInterp = GetInterp2(interp, objc, objv); |
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if (slaveInterp == NULL) { |
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return TCL_ERROR; |
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} |
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return AliasList(interp, slaveInterp); |
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} |
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case OPT_CREATE: { |
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int i, last, safe; |
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Tcl_Obj *slavePtr; |
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char buf[16 + TCL_INTEGER_SPACE]; |
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static char *options[] = { |
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"-safe", "--", NULL |
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}; |
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enum option { |
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OPT_SAFE, OPT_LAST |
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}; |
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safe = Tcl_IsSafe(interp); |
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|
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/* |
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* Weird historical rules: "-safe" is accepted at the end, too. |
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*/ |
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slavePtr = NULL; |
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last = 0; |
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for (i = 2; i < objc; i++) { |
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if ((last == 0) && (Tcl_GetString(objv[i])[0] == '-')) { |
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if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", |
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0, &index) != TCL_OK) { |
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return TCL_ERROR; |
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} |
|
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if (index == OPT_SAFE) { |
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safe = 1; |
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continue; |
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} |
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i++; |
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last = 1; |
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} |
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if (slavePtr != NULL) { |
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|
Tcl_WrongNumArgs(interp, 2, objv, "?-safe? ?--? ?path?"); |
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|
return TCL_ERROR; |
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|
} |
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slavePtr = objv[i]; |
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} |
|
|
buf[0] = '\0'; |
|
|
if (slavePtr == NULL) { |
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|
/* |
|
|
* Create an anonymous interpreter -- we choose its name and |
|
|
* the name of the command. We check that the command name |
|
|
* that we use for the interpreter does not collide with an |
|
|
* existing command in the master interpreter. |
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|
*/ |
|
|
|
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for (i = 0; ; i++) { |
|
|
Tcl_CmdInfo cmdInfo; |
|
|
|
|
|
sprintf(buf, "interp%d", i); |
|
|
if (Tcl_GetCommandInfo(interp, buf, &cmdInfo) == 0) { |
|
|
break; |
|
|
} |
|
|
} |
|
|
slavePtr = Tcl_NewStringObj(buf, -1); |
|
|
} |
|
|
if (SlaveCreate(interp, slavePtr, safe) == NULL) { |
|
|
if (buf[0] != '\0') { |
|
|
Tcl_DecrRefCount(slavePtr); |
|
|
} |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_SetObjResult(interp, slavePtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_DELETE: { |
|
|
int i; |
|
|
InterpInfo *iiPtr; |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
for (i = 2; i < objc; i++) { |
|
|
slaveInterp = GetInterp(interp, objv[i]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} else if (slaveInterp == interp) { |
|
|
Tcl_ResetResult(interp); |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"cannot delete the current interpreter", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
|
|
Tcl_DeleteCommandFromToken(iiPtr->slave.masterInterp, |
|
|
iiPtr->slave.interpCmd); |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_EVAL: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
if (objc < 4) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveEval(interp, slaveInterp, objc - 3, objv + 3); |
|
|
} |
|
|
case OPT_EXISTS: { |
|
|
int exists; |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
exists = 1; |
|
|
slaveInterp = GetInterp2(interp, objc, objv); |
|
|
if (slaveInterp == NULL) { |
|
|
if (objc > 3) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_ResetResult(interp); |
|
|
exists = 0; |
|
|
} |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), exists); |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_EXPOSE: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
if ((objc < 4) || (objc > 5)) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"path hiddenCmdName ?cmdName?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3); |
|
|
} |
|
|
case OPT_HIDE: { |
|
|
Tcl_Interp *slaveInterp; /* A slave. */ |
|
|
|
|
|
if ((objc < 4) || (objc > 5)) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"path cmdName ?hiddenCmdName?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == (Tcl_Interp *) NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveHide(interp, slaveInterp, objc - 3, objv + 3); |
|
|
} |
|
|
case OPT_HIDDEN: { |
|
|
Tcl_Interp *slaveInterp; /* A slave. */ |
|
|
|
|
|
slaveInterp = GetInterp2(interp, objc, objv); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveHidden(interp, slaveInterp); |
|
|
} |
|
|
case OPT_ISSAFE: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
slaveInterp = GetInterp2(interp, objc, objv); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp)); |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_INVOKEHID: { |
|
|
int i, index, global; |
|
|
Tcl_Interp *slaveInterp; |
|
|
static char *hiddenOptions[] = { |
|
|
"-global", "--", NULL |
|
|
}; |
|
|
enum hiddenOption { |
|
|
OPT_GLOBAL, OPT_LAST |
|
|
}; |
|
|
|
|
|
global = 0; |
|
|
for (i = 3; i < objc; i++) { |
|
|
if (Tcl_GetString(objv[i])[0] != '-') { |
|
|
break; |
|
|
} |
|
|
if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, |
|
|
"option", 0, &index) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (index == OPT_GLOBAL) { |
|
|
global = 1; |
|
|
} else { |
|
|
i++; |
|
|
break; |
|
|
} |
|
|
} |
|
|
if (objc - i < 1) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"path ?-global? ?--? cmd ?arg ..?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == (Tcl_Interp *) NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveInvokeHidden(interp, slaveInterp, global, objc - i, |
|
|
objv + i); |
|
|
} |
|
|
case OPT_MARKTRUSTED: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
if (objc != 3) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "path"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveMarkTrusted(interp, slaveInterp); |
|
|
} |
|
|
case OPT_SLAVES: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
InterpInfo *iiPtr; |
|
|
Tcl_Obj *resultPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Tcl_HashSearch hashSearch; |
|
|
char *string; |
|
|
|
|
|
slaveInterp = GetInterp2(interp, objc, objv); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
|
|
resultPtr = Tcl_GetObjResult(interp); |
|
|
hPtr = Tcl_FirstHashEntry(&iiPtr->master.slaveTable, &hashSearch); |
|
|
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&hashSearch)) { |
|
|
string = Tcl_GetHashKey(&iiPtr->master.slaveTable, hPtr); |
|
|
Tcl_ListObjAppendElement(NULL, resultPtr, |
|
|
Tcl_NewStringObj(string, -1)); |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_SHARE: { |
|
|
Tcl_Interp *slaveInterp; /* A slave. */ |
|
|
Tcl_Interp *masterInterp; /* Its master. */ |
|
|
Tcl_Channel chan; |
|
|
|
|
|
if (objc != 5) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "srcPath channelId destPath"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
masterInterp = GetInterp(interp, objv[2]); |
|
|
if (masterInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]), |
|
|
NULL); |
|
|
if (chan == NULL) { |
|
|
TclTransferResult(masterInterp, TCL_OK, interp); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[4]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_RegisterChannel(slaveInterp, chan); |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_TARGET: { |
|
|
Tcl_Interp *slaveInterp; |
|
|
InterpInfo *iiPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Alias *aliasPtr; |
|
|
char *aliasName; |
|
|
|
|
|
if (objc != 4) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "path alias"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
slaveInterp = GetInterp(interp, objv[2]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
aliasName = Tcl_GetString(objv[3]); |
|
|
|
|
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
|
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
|
|
if (hPtr == NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"alias \"", aliasName, "\" in path \"", |
|
|
Tcl_GetString(objv[2]), "\" not found", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) { |
|
|
Tcl_ResetResult(interp); |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"target interpreter for alias \"", aliasName, |
|
|
"\" in path \"", Tcl_GetString(objv[2]), |
|
|
"\" is not my descendant", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_TRANSFER: { |
|
|
Tcl_Interp *slaveInterp; /* A slave. */ |
|
|
Tcl_Interp *masterInterp; /* Its master. */ |
|
|
Tcl_Channel chan; |
|
|
|
|
|
if (objc != 5) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"srcPath channelId destPath"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
masterInterp = GetInterp(interp, objv[2]); |
|
|
if (masterInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]), NULL); |
|
|
if (chan == NULL) { |
|
|
TclTransferResult(masterInterp, TCL_OK, interp); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
slaveInterp = GetInterp(interp, objv[4]); |
|
|
if (slaveInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_RegisterChannel(slaveInterp, chan); |
|
|
if (Tcl_UnregisterChannel(masterInterp, chan) != TCL_OK) { |
|
|
TclTransferResult(masterInterp, TCL_OK, interp); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* GetInterp2 -- |
|
|
* |
|
|
* Helper function for Tcl_InterpObjCmd() to convert the interp name |
|
|
* potentially specified on the command line to an Tcl_Interp. |
|
|
* |
|
|
* Results: |
|
|
* The return value is the interp specified on the command line, |
|
|
* or the interp argument itself if no interp was specified on the |
|
|
* command line. If the interp could not be found or the wrong |
|
|
* number of arguments was specified on the command line, the return |
|
|
* value is NULL and an error message is left in the interp's result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static Tcl_Interp * |
|
|
GetInterp2(interp, objc, objv) |
|
|
Tcl_Interp *interp; /* Default interp if no interp was specified |
|
|
* on the command line. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
|
|
{ |
|
|
if (objc == 2) { |
|
|
return interp; |
|
|
} else if (objc == 3) { |
|
|
return GetInterp(interp, objv[2]); |
|
|
} else { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "?path?"); |
|
|
return NULL; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateAlias -- |
|
|
* |
|
|
* Creates an alias between two interpreters. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Creates a new alias, manipulates the result field of slaveInterp. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_CreateAlias(slaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv) |
|
|
Tcl_Interp *slaveInterp; /* Interpreter for source command. */ |
|
|
char *slaveCmd; /* Command to install in slave. */ |
|
|
Tcl_Interp *targetInterp; /* Interpreter for target command. */ |
|
|
char *targetCmd; /* Name of target command. */ |
|
|
int argc; /* How many additional arguments? */ |
|
|
char **argv; /* These are the additional args. */ |
|
|
{ |
|
|
Tcl_Obj *slaveObjPtr, *targetObjPtr; |
|
|
Tcl_Obj **objv; |
|
|
int i; |
|
|
int result; |
|
|
|
|
|
objv = (Tcl_Obj **) ckalloc((unsigned) sizeof(Tcl_Obj *) * argc); |
|
|
for (i = 0; i < argc; i++) { |
|
|
objv[i] = Tcl_NewStringObj(argv[i], -1); |
|
|
Tcl_IncrRefCount(objv[i]); |
|
|
} |
|
|
|
|
|
slaveObjPtr = Tcl_NewStringObj(slaveCmd, -1); |
|
|
Tcl_IncrRefCount(slaveObjPtr); |
|
|
|
|
|
targetObjPtr = Tcl_NewStringObj(targetCmd, -1); |
|
|
Tcl_IncrRefCount(targetObjPtr); |
|
|
|
|
|
result = AliasCreate(slaveInterp, slaveInterp, targetInterp, slaveObjPtr, |
|
|
targetObjPtr, argc, objv); |
|
|
|
|
|
for (i = 0; i < argc; i++) { |
|
|
Tcl_DecrRefCount(objv[i]); |
|
|
} |
|
|
ckfree((char *) objv); |
|
|
Tcl_DecrRefCount(targetObjPtr); |
|
|
Tcl_DecrRefCount(slaveObjPtr); |
|
|
|
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateAliasObj -- |
|
|
* |
|
|
* Object version: Creates an alias between two interpreters. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Creates a new alias. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_CreateAliasObj(slaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv) |
|
|
Tcl_Interp *slaveInterp; /* Interpreter for source command. */ |
|
|
char *slaveCmd; /* Command to install in slave. */ |
|
|
Tcl_Interp *targetInterp; /* Interpreter for target command. */ |
|
|
char *targetCmd; /* Name of target command. */ |
|
|
int objc; /* How many additional arguments? */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument vector. */ |
|
|
{ |
|
|
Tcl_Obj *slaveObjPtr, *targetObjPtr; |
|
|
int result; |
|
|
|
|
|
slaveObjPtr = Tcl_NewStringObj(slaveCmd, -1); |
|
|
Tcl_IncrRefCount(slaveObjPtr); |
|
|
|
|
|
targetObjPtr = Tcl_NewStringObj(targetCmd, -1); |
|
|
Tcl_IncrRefCount(targetObjPtr); |
|
|
|
|
|
result = AliasCreate(slaveInterp, slaveInterp, targetInterp, slaveObjPtr, |
|
|
targetObjPtr, objc, objv); |
|
|
|
|
|
Tcl_DecrRefCount(slaveObjPtr); |
|
|
Tcl_DecrRefCount(targetObjPtr); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetAlias -- |
|
|
* |
|
|
* Gets information about an alias. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_GetAlias(interp, aliasName, targetInterpPtr, targetNamePtr, argcPtr, |
|
|
argvPtr) |
|
|
Tcl_Interp *interp; /* Interp to start search from. */ |
|
|
char *aliasName; /* Name of alias to find. */ |
|
|
Tcl_Interp **targetInterpPtr; /* (Return) target interpreter. */ |
|
|
char **targetNamePtr; /* (Return) name of target command. */ |
|
|
int *argcPtr; /* (Return) count of addnl args. */ |
|
|
char ***argvPtr; /* (Return) additional arguments. */ |
|
|
{ |
|
|
InterpInfo *iiPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Alias *aliasPtr; |
|
|
int i, objc; |
|
|
Tcl_Obj **objv; |
|
|
|
|
|
iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
|
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
|
|
if (hPtr == NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"alias \"", aliasName, "\" not found", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &objc, &objv); |
|
|
|
|
|
if (targetInterpPtr != NULL) { |
|
|
*targetInterpPtr = aliasPtr->targetInterp; |
|
|
} |
|
|
if (targetNamePtr != NULL) { |
|
|
*targetNamePtr = Tcl_GetString(objv[0]); |
|
|
} |
|
|
if (argcPtr != NULL) { |
|
|
*argcPtr = objc - 1; |
|
|
} |
|
|
if (argvPtr != NULL) { |
|
|
*argvPtr = (char **) ckalloc((unsigned) sizeof(char *) * (objc - 1)); |
|
|
for (i = 1; i < objc; i++) { |
|
|
*argvPtr[i - 1] = Tcl_GetString(objv[i]); |
|
|
} |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ObjGetAlias -- |
|
|
* |
|
|
* Object version: Gets information about an alias. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_GetAliasObj(interp, aliasName, targetInterpPtr, targetNamePtr, objcPtr, |
|
|
objvPtr) |
|
|
Tcl_Interp *interp; /* Interp to start search from. */ |
|
|
char *aliasName; /* Name of alias to find. */ |
|
|
Tcl_Interp **targetInterpPtr; /* (Return) target interpreter. */ |
|
|
char **targetNamePtr; /* (Return) name of target command. */ |
|
|
int *objcPtr; /* (Return) count of addnl args. */ |
|
|
Tcl_Obj ***objvPtr; /* (Return) additional args. */ |
|
|
{ |
|
|
InterpInfo *iiPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Alias *aliasPtr; |
|
|
int objc; |
|
|
Tcl_Obj **objv; |
|
|
|
|
|
iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
|
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
|
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"alias \"", aliasName, "\" not found", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &objc, &objv); |
|
|
|
|
|
if (targetInterpPtr != (Tcl_Interp **) NULL) { |
|
|
*targetInterpPtr = aliasPtr->targetInterp; |
|
|
} |
|
|
if (targetNamePtr != (char **) NULL) { |
|
|
*targetNamePtr = Tcl_GetString(objv[0]); |
|
|
} |
|
|
if (objcPtr != (int *) NULL) { |
|
|
*objcPtr = objc - 1; |
|
|
} |
|
|
if (objvPtr != (Tcl_Obj ***) NULL) { |
|
|
*objvPtr = objv + 1; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclPreventAliasLoop -- |
|
|
* |
|
|
* When defining an alias or renaming a command, prevent an alias |
|
|
* loop from being formed. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl object result. |
|
|
* |
|
|
* Side effects: |
|
|
* If TCL_ERROR is returned, the function also stores an error message |
|
|
* in the interpreter's result object. |
|
|
* |
|
|
* NOTE: |
|
|
* This function is public internal (instead of being static to |
|
|
* this file) because it is also used from TclRenameCommand. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclPreventAliasLoop(interp, cmdInterp, cmd) |
|
|
Tcl_Interp *interp; /* Interp in which to report errors. */ |
|
|
Tcl_Interp *cmdInterp; /* Interp in which the command is |
|
|
* being defined. */ |
|
|
Tcl_Command cmd; /* Tcl command we are attempting |
|
|
* to define. */ |
|
|
{ |
|
|
Command *cmdPtr = (Command *) cmd; |
|
|
Alias *aliasPtr, *nextAliasPtr; |
|
|
Tcl_Command aliasCmd; |
|
|
Command *aliasCmdPtr; |
|
|
|
|
|
/* |
|
|
* If we are not creating or renaming an alias, then it is |
|
|
* always OK to create or rename the command. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->objProc != AliasObjCmd) { |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
* OK, we are dealing with an alias, so traverse the chain of aliases. |
|
|
* If we encounter the alias we are defining (or renaming to) any in |
|
|
* the chain then we have a loop. |
|
|
*/ |
|
|
|
|
|
aliasPtr = (Alias *) cmdPtr->objClientData; |
|
|
nextAliasPtr = aliasPtr; |
|
|
while (1) { |
|
|
int objc; |
|
|
Tcl_Obj **objv; |
|
|
|
|
|
/* |
|
|
* If the target of the next alias in the chain is the same as |
|
|
* the source alias, we have a loop. |
|
|
*/ |
|
|
|
|
|
Tcl_ListObjGetElements(NULL, nextAliasPtr->prefixPtr, &objc, &objv); |
|
|
aliasCmd = Tcl_FindCommand(nextAliasPtr->targetInterp, |
|
|
Tcl_GetString(objv[0]), |
|
|
Tcl_GetGlobalNamespace(nextAliasPtr->targetInterp), |
|
|
/*flags*/ 0); |
|
|
if (aliasCmd == (Tcl_Command) NULL) { |
|
|
return TCL_OK; |
|
|
} |
|
|
aliasCmdPtr = (Command *) aliasCmd; |
|
|
if (aliasCmdPtr == cmdPtr) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"cannot define or rename alias \"", |
|
|
Tcl_GetString(aliasPtr->namePtr), |
|
|
"\": would create a loop", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Otherwise, follow the chain one step further. See if the target |
|
|
* command is an alias - if so, follow the loop to its target |
|
|
* command. Otherwise we do not have a loop. |
|
|
*/ |
|
|
|
|
|
if (aliasCmdPtr->objProc != AliasObjCmd) { |
|
|
return TCL_OK; |
|
|
} |
|
|
nextAliasPtr = (Alias *) aliasCmdPtr->objClientData; |
|
|
} |
|
|
|
|
|
/* NOTREACHED */ |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasCreate -- |
|
|
* |
|
|
* Helper function to do the work to actually create an alias. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* An alias command is created and entered into the alias table |
|
|
* for the slave interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr, |
|
|
objc, objv) |
|
|
Tcl_Interp *interp; /* Interp for error reporting. */ |
|
|
Tcl_Interp *slaveInterp; /* Interp where alias cmd will live or from |
|
|
* which alias will be deleted. */ |
|
|
Tcl_Interp *masterInterp; /* Interp in which target command will be |
|
|
* invoked. */ |
|
|
Tcl_Obj *namePtr; /* Name of alias cmd. */ |
|
|
Tcl_Obj *targetNamePtr; /* Name of target cmd. */ |
|
|
int objc; /* Additional arguments to store */ |
|
|
Tcl_Obj *CONST objv[]; /* with alias. */ |
|
|
{ |
|
|
Alias *aliasPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
int new; |
|
|
Target *targetPtr; |
|
|
Slave *slavePtr; |
|
|
Master *masterPtr; |
|
|
|
|
|
aliasPtr = (Alias *) ckalloc((unsigned) sizeof(Alias)); |
|
|
aliasPtr->namePtr = namePtr; |
|
|
Tcl_IncrRefCount(aliasPtr->namePtr); |
|
|
aliasPtr->targetInterp = masterInterp; |
|
|
aliasPtr->prefixPtr = Tcl_NewListObj(1, &targetNamePtr); |
|
|
Tcl_ListObjReplace(NULL, aliasPtr->prefixPtr, 1, 0, objc, objv); |
|
|
Tcl_IncrRefCount(aliasPtr->prefixPtr); |
|
|
|
|
|
aliasPtr->slaveCmd = Tcl_CreateObjCommand(slaveInterp, |
|
|
Tcl_GetString(namePtr), AliasObjCmd, (ClientData) aliasPtr, |
|
|
AliasObjCmdDeleteProc); |
|
|
|
|
|
if (TclPreventAliasLoop(interp, slaveInterp, aliasPtr->slaveCmd) != TCL_OK) { |
|
|
/* |
|
|
* Found an alias loop! The last call to Tcl_CreateObjCommand made |
|
|
* the alias point to itself. Delete the command and its alias |
|
|
* record. Be careful to wipe out its client data first, so the |
|
|
* command doesn't try to delete itself. |
|
|
*/ |
|
|
|
|
|
Command *cmdPtr; |
|
|
|
|
|
Tcl_DecrRefCount(aliasPtr->namePtr); |
|
|
Tcl_DecrRefCount(aliasPtr->prefixPtr); |
|
|
|
|
|
cmdPtr = (Command *) aliasPtr->slaveCmd; |
|
|
cmdPtr->clientData = NULL; |
|
|
cmdPtr->deleteProc = NULL; |
|
|
cmdPtr->deleteData = NULL; |
|
|
Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd); |
|
|
|
|
|
ckfree((char *) aliasPtr); |
|
|
|
|
|
/* |
|
|
* The result was already set by TclPreventAliasLoop. |
|
|
*/ |
|
|
|
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Make an entry in the alias table. If it already exists delete |
|
|
* the alias command. Then retry. |
|
|
*/ |
|
|
|
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
while (1) { |
|
|
Alias *oldAliasPtr; |
|
|
char *string; |
|
|
|
|
|
string = Tcl_GetString(namePtr); |
|
|
hPtr = Tcl_CreateHashEntry(&slavePtr->aliasTable, string, &new); |
|
|
if (new != 0) { |
|
|
break; |
|
|
} |
|
|
|
|
|
oldAliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_DeleteCommandFromToken(slaveInterp, oldAliasPtr->slaveCmd); |
|
|
} |
|
|
|
|
|
aliasPtr->aliasEntryPtr = hPtr; |
|
|
Tcl_SetHashValue(hPtr, (ClientData) aliasPtr); |
|
|
|
|
|
/* |
|
|
* Create the new command. We must do it after deleting any old command, |
|
|
* because the alias may be pointing at a renamed alias, as in: |
|
|
* |
|
|
* interp alias {} foo {} bar # Create an alias "foo" |
|
|
* rename foo zop # Now rename the alias |
|
|
* interp alias {} foo {} zop # Now recreate "foo"... |
|
|
*/ |
|
|
|
|
|
targetPtr = (Target *) ckalloc((unsigned) sizeof(Target)); |
|
|
targetPtr->slaveCmd = aliasPtr->slaveCmd; |
|
|
targetPtr->slaveInterp = slaveInterp; |
|
|
|
|
|
Tcl_MutexLock(&cntMutex); |
|
|
masterPtr = &((InterpInfo *) ((Interp *) masterInterp)->interpInfo)->master; |
|
|
do { |
|
|
hPtr = Tcl_CreateHashEntry(&masterPtr->targetTable, |
|
|
(char *) aliasCounter, &new); |
|
|
aliasCounter++; |
|
|
} while (new == 0); |
|
|
Tcl_MutexUnlock(&cntMutex); |
|
|
|
|
|
Tcl_SetHashValue(hPtr, (ClientData) targetPtr); |
|
|
aliasPtr->targetEntryPtr = hPtr; |
|
|
|
|
|
Tcl_SetObjResult(interp, namePtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasDelete -- |
|
|
* |
|
|
* Deletes the given alias from the slave interpreter given. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Deletes the alias from the slave interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
AliasDelete(interp, slaveInterp, namePtr) |
|
|
Tcl_Interp *interp; /* Interpreter for result & errors. */ |
|
|
Tcl_Interp *slaveInterp; /* Interpreter containing alias. */ |
|
|
Tcl_Obj *namePtr; /* Name of alias to describe. */ |
|
|
{ |
|
|
Slave *slavePtr; |
|
|
Alias *aliasPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
|
|
|
/* |
|
|
* If the alias has been renamed in the slave, the master can still use |
|
|
* the original name (with which it was created) to find the alias to |
|
|
* delete it. |
|
|
*/ |
|
|
|
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr)); |
|
|
if (hPtr == NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "alias \"", |
|
|
Tcl_GetString(namePtr), "\" not found", NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasDescribe -- |
|
|
* |
|
|
* Sets the interpreter's result object to a Tcl list describing |
|
|
* the given alias in the given interpreter: its target command |
|
|
* and the additional arguments to prepend to any invocation |
|
|
* of the alias. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
AliasDescribe(interp, slaveInterp, namePtr) |
|
|
Tcl_Interp *interp; /* Interpreter for result & errors. */ |
|
|
Tcl_Interp *slaveInterp; /* Interpreter containing alias. */ |
|
|
Tcl_Obj *namePtr; /* Name of alias to describe. */ |
|
|
{ |
|
|
Slave *slavePtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Alias *aliasPtr; |
|
|
|
|
|
/* |
|
|
* If the alias has been renamed in the slave, the master can still use |
|
|
* the original name (with which it was created) to find the alias to |
|
|
* describe it. |
|
|
*/ |
|
|
|
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr)); |
|
|
if (hPtr == NULL) { |
|
|
return TCL_OK; |
|
|
} |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_SetObjResult(interp, aliasPtr->prefixPtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasList -- |
|
|
* |
|
|
* Computes a list of aliases defined in a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
AliasList(interp, slaveInterp) |
|
|
Tcl_Interp *interp; /* Interp for data return. */ |
|
|
Tcl_Interp *slaveInterp; /* Interp whose aliases to compute. */ |
|
|
{ |
|
|
Tcl_HashEntry *entryPtr; |
|
|
Tcl_HashSearch hashSearch; |
|
|
Tcl_Obj *resultPtr; |
|
|
Alias *aliasPtr; |
|
|
Slave *slavePtr; |
|
|
|
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
resultPtr = Tcl_GetObjResult(interp); |
|
|
|
|
|
entryPtr = Tcl_FirstHashEntry(&slavePtr->aliasTable, &hashSearch); |
|
|
for ( ; entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&hashSearch)) { |
|
|
aliasPtr = (Alias *) Tcl_GetHashValue(entryPtr); |
|
|
Tcl_ListObjAppendElement(NULL, resultPtr, aliasPtr->namePtr); |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasObjCmd -- |
|
|
* |
|
|
* This is the procedure that services invocations of aliases in a |
|
|
* slave interpreter. One such command exists for each alias. When |
|
|
* invoked, this procedure redirects the invocation to the target |
|
|
* command in the master interpreter as designated by the Alias |
|
|
* record associated with this command. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Causes forwarding of the invocation; all possible side effects |
|
|
* may occur as a result of invoking the command to which the |
|
|
* invocation is forwarded. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
AliasObjCmd(clientData, interp, objc, objv) |
|
|
ClientData clientData; /* Alias record. */ |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument vector. */ |
|
|
{ |
|
|
Tcl_Interp *targetInterp; |
|
|
Alias *aliasPtr; |
|
|
int result, prefc, cmdc; |
|
|
Tcl_Obj *cmdPtr; |
|
|
Tcl_Obj **prefv, **cmdv; |
|
|
|
|
|
aliasPtr = (Alias *) clientData; |
|
|
targetInterp = aliasPtr->targetInterp; |
|
|
|
|
|
Tcl_Preserve((ClientData) targetInterp); |
|
|
|
|
|
((Interp *) targetInterp)->numLevels++; |
|
|
|
|
|
Tcl_ResetResult(targetInterp); |
|
|
Tcl_AllowExceptions(targetInterp); |
|
|
|
|
|
/* |
|
|
* Append the arguments to the command prefix and invoke the command |
|
|
* in the target interp's global namespace. |
|
|
*/ |
|
|
|
|
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &prefc, &prefv); |
|
|
cmdPtr = Tcl_NewListObj(prefc, prefv); |
|
|
Tcl_ListObjReplace(NULL, cmdPtr, prefc, 0, objc - 1, objv + 1); |
|
|
Tcl_ListObjGetElements(NULL, cmdPtr, &cmdc, &cmdv); |
|
|
result = TclObjInvoke(targetInterp, cmdc, cmdv, |
|
|
TCL_INVOKE_NO_TRACEBACK); |
|
|
Tcl_DecrRefCount(cmdPtr); |
|
|
|
|
|
((Interp *) targetInterp)->numLevels--; |
|
|
|
|
|
/* |
|
|
* Check if we are at the bottom of the stack for the target interpreter. |
|
|
* If so, check for special return codes. |
|
|
*/ |
|
|
|
|
|
if (((Interp *) targetInterp)->numLevels == 0) { |
|
|
if (result == TCL_RETURN) { |
|
|
result = TclUpdateReturnInfo((Interp *) targetInterp); |
|
|
} |
|
|
if ((result != TCL_OK) && (result != TCL_ERROR)) { |
|
|
Tcl_ResetResult(targetInterp); |
|
|
if (result == TCL_BREAK) { |
|
|
Tcl_SetObjResult(targetInterp, |
|
|
Tcl_NewStringObj("invoked \"break\" outside of a loop", |
|
|
-1)); |
|
|
} else if (result == TCL_CONTINUE) { |
|
|
Tcl_SetObjResult(targetInterp, |
|
|
Tcl_NewStringObj( |
|
|
"invoked \"continue\" outside of a loop", |
|
|
-1)); |
|
|
} else { |
|
|
char buf[32 + TCL_INTEGER_SPACE]; |
|
|
|
|
|
sprintf(buf, "command returned bad code: %d", result); |
|
|
Tcl_SetObjResult(targetInterp, Tcl_NewStringObj(buf, -1)); |
|
|
} |
|
|
result = TCL_ERROR; |
|
|
} |
|
|
} |
|
|
|
|
|
TclTransferResult(targetInterp, result, interp); |
|
|
|
|
|
Tcl_Release((ClientData) targetInterp); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* AliasObjCmdDeleteProc -- |
|
|
* |
|
|
* Is invoked when an alias command is deleted in a slave. Cleans up |
|
|
* all storage associated with this alias. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Deletes the alias record and its entry in the alias table for |
|
|
* the interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
AliasObjCmdDeleteProc(clientData) |
|
|
ClientData clientData; /* The alias record for this alias. */ |
|
|
{ |
|
|
Alias *aliasPtr; |
|
|
Target *targetPtr; |
|
|
|
|
|
aliasPtr = (Alias *) clientData; |
|
|
|
|
|
Tcl_DecrRefCount(aliasPtr->namePtr); |
|
|
Tcl_DecrRefCount(aliasPtr->prefixPtr); |
|
|
Tcl_DeleteHashEntry(aliasPtr->aliasEntryPtr); |
|
|
|
|
|
targetPtr = (Target *) Tcl_GetHashValue(aliasPtr->targetEntryPtr); |
|
|
ckfree((char *) targetPtr); |
|
|
Tcl_DeleteHashEntry(aliasPtr->targetEntryPtr); |
|
|
|
|
|
ckfree((char *) aliasPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateSlave -- |
|
|
* |
|
|
* Creates a slave interpreter. The slavePath argument denotes the |
|
|
* name of the new slave relative to the current interpreter; the |
|
|
* slave is a direct descendant of the one-before-last component of |
|
|
* the path, e.g. it is a descendant of the current interpreter if |
|
|
* the slavePath argument contains only one component. Optionally makes |
|
|
* the slave interpreter safe. |
|
|
* |
|
|
* Results: |
|
|
* Returns the interpreter structure created, or NULL if an error |
|
|
* occurred. |
|
|
* |
|
|
* Side effects: |
|
|
* Creates a new interpreter and a new interpreter object command in |
|
|
* the interpreter indicated by the slavePath argument. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Interp * |
|
|
Tcl_CreateSlave(interp, slavePath, isSafe) |
|
|
Tcl_Interp *interp; /* Interpreter to start search at. */ |
|
|
char *slavePath; /* Name of slave to create. */ |
|
|
int isSafe; /* Should new slave be "safe" ? */ |
|
|
{ |
|
|
Tcl_Obj *pathPtr; |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
pathPtr = Tcl_NewStringObj(slavePath, -1); |
|
|
slaveInterp = SlaveCreate(interp, pathPtr, isSafe); |
|
|
Tcl_DecrRefCount(pathPtr); |
|
|
|
|
|
return slaveInterp; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetSlave -- |
|
|
* |
|
|
* Finds a slave interpreter by its path name. |
|
|
* |
|
|
* Results: |
|
|
* Returns a Tcl_Interp * for the named interpreter or NULL if not |
|
|
* found. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Interp * |
|
|
Tcl_GetSlave(interp, slavePath) |
|
|
Tcl_Interp *interp; /* Interpreter to start search from. */ |
|
|
char *slavePath; /* Path of slave to find. */ |
|
|
{ |
|
|
Tcl_Obj *pathPtr; |
|
|
Tcl_Interp *slaveInterp; |
|
|
|
|
|
pathPtr = Tcl_NewStringObj(slavePath, -1); |
|
|
slaveInterp = GetInterp(interp, pathPtr); |
|
|
Tcl_DecrRefCount(pathPtr); |
|
|
|
|
|
return slaveInterp; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetMaster -- |
|
|
* |
|
|
* Finds the master interpreter of a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* Returns a Tcl_Interp * for the master interpreter or NULL if none. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Interp * |
|
|
Tcl_GetMaster(interp) |
|
|
Tcl_Interp *interp; /* Get the master of this interpreter. */ |
|
|
{ |
|
|
Slave *slavePtr; /* Slave record of this interpreter. */ |
|
|
|
|
|
if (interp == (Tcl_Interp *) NULL) { |
|
|
return NULL; |
|
|
} |
|
|
slavePtr = &((InterpInfo *) ((Interp *) interp)->interpInfo)->slave; |
|
|
return slavePtr->masterInterp; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetInterpPath -- |
|
|
* |
|
|
* Sets the result of the asking interpreter to a proper Tcl list |
|
|
* containing the names of interpreters between the asking and |
|
|
* target interpreters. The target interpreter must be either the |
|
|
* same as the asking interpreter or one of its slaves (including |
|
|
* recursively). |
|
|
* |
|
|
* Results: |
|
|
* TCL_OK if the target interpreter is the same as, or a descendant |
|
|
* of, the asking interpreter; TCL_ERROR else. This way one can |
|
|
* distinguish between the case where the asking and target interps |
|
|
* are the same (an empty list is the result, and TCL_OK is returned) |
|
|
* and when the target is not a descendant of the asking interpreter |
|
|
* (in which case the Tcl result is an error message and the function |
|
|
* returns TCL_ERROR). |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_GetInterpPath(askingInterp, targetInterp) |
|
|
Tcl_Interp *askingInterp; /* Interpreter to start search from. */ |
|
|
Tcl_Interp *targetInterp; /* Interpreter to find. */ |
|
|
{ |
|
|
InterpInfo *iiPtr; |
|
|
|
|
|
if (targetInterp == askingInterp) { |
|
|
return TCL_OK; |
|
|
} |
|
|
if (targetInterp == NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
iiPtr = (InterpInfo *) ((Interp *) targetInterp)->interpInfo; |
|
|
if (Tcl_GetInterpPath(askingInterp, iiPtr->slave.masterInterp) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
Tcl_AppendElement(askingInterp, |
|
|
Tcl_GetHashKey(&iiPtr->master.slaveTable, |
|
|
iiPtr->slave.slaveEntryPtr)); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* GetInterp -- |
|
|
* |
|
|
* Helper function to find a slave interpreter given a pathname. |
|
|
* |
|
|
* Results: |
|
|
* Returns the slave interpreter known by that name in the calling |
|
|
* interpreter, or NULL if no interpreter known by that name exists. |
|
|
* |
|
|
* Side effects: |
|
|
* Assigns to the pointer variable passed in, if not NULL. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static Tcl_Interp * |
|
|
GetInterp(interp, pathPtr) |
|
|
Tcl_Interp *interp; /* Interp. to start search from. */ |
|
|
Tcl_Obj *pathPtr; /* List object containing name of interp. to |
|
|
* be found. */ |
|
|
{ |
|
|
Tcl_HashEntry *hPtr; /* Search element. */ |
|
|
Slave *slavePtr; /* Interim slave record. */ |
|
|
Tcl_Obj **objv; |
|
|
int objc, i; |
|
|
Tcl_Interp *searchInterp; /* Interim storage for interp. to find. */ |
|
|
InterpInfo *masterInfoPtr; |
|
|
|
|
|
if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) { |
|
|
return NULL; |
|
|
} |
|
|
|
|
|
searchInterp = interp; |
|
|
for (i = 0; i < objc; i++) { |
|
|
masterInfoPtr = (InterpInfo *) ((Interp *) searchInterp)->interpInfo; |
|
|
hPtr = Tcl_FindHashEntry(&masterInfoPtr->master.slaveTable, |
|
|
Tcl_GetString(objv[i])); |
|
|
if (hPtr == NULL) { |
|
|
searchInterp = NULL; |
|
|
break; |
|
|
} |
|
|
slavePtr = (Slave *) Tcl_GetHashValue(hPtr); |
|
|
searchInterp = slavePtr->slaveInterp; |
|
|
if (searchInterp == NULL) { |
|
|
break; |
|
|
} |
|
|
} |
|
|
if (searchInterp == NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"could not find interpreter \"", |
|
|
Tcl_GetString(pathPtr), "\"", (char *) NULL); |
|
|
} |
|
|
return searchInterp; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveCreate -- |
|
|
* |
|
|
* Helper function to do the actual work of creating a slave interp |
|
|
* and new object command. Also optionally makes the new slave |
|
|
* interpreter "safe". |
|
|
* |
|
|
* Results: |
|
|
* Returns the new Tcl_Interp * if successful or NULL if not. If failed, |
|
|
* the result of the invoking interpreter contains an error message. |
|
|
* |
|
|
* Side effects: |
|
|
* Creates a new slave interpreter and a new object command. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static Tcl_Interp * |
|
|
SlaveCreate(interp, pathPtr, safe) |
|
|
Tcl_Interp *interp; /* Interp. to start search from. */ |
|
|
Tcl_Obj *pathPtr; /* Path (name) of slave to create. */ |
|
|
int safe; /* Should we make it "safe"? */ |
|
|
{ |
|
|
Tcl_Interp *masterInterp, *slaveInterp; |
|
|
Slave *slavePtr; |
|
|
InterpInfo *masterInfoPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
char *path; |
|
|
int new, objc; |
|
|
Tcl_Obj **objv; |
|
|
|
|
|
if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) { |
|
|
return NULL; |
|
|
} |
|
|
if (objc < 2) { |
|
|
masterInterp = interp; |
|
|
path = Tcl_GetString(pathPtr); |
|
|
} else { |
|
|
Tcl_Obj *objPtr; |
|
|
|
|
|
objPtr = Tcl_NewListObj(objc - 1, objv); |
|
|
masterInterp = GetInterp(interp, objPtr); |
|
|
Tcl_DecrRefCount(objPtr); |
|
|
if (masterInterp == NULL) { |
|
|
return NULL; |
|
|
} |
|
|
path = Tcl_GetString(objv[objc - 1]); |
|
|
} |
|
|
if (safe == 0) { |
|
|
safe = Tcl_IsSafe(masterInterp); |
|
|
} |
|
|
|
|
|
masterInfoPtr = (InterpInfo *) ((Interp *) masterInterp)->interpInfo; |
|
|
hPtr = Tcl_CreateHashEntry(&masterInfoPtr->master.slaveTable, path, &new); |
|
|
if (new == 0) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"interpreter named \"", path, |
|
|
"\" already exists, cannot create", (char *) NULL); |
|
|
return NULL; |
|
|
} |
|
|
|
|
|
slaveInterp = Tcl_CreateInterp(); |
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
slavePtr->masterInterp = masterInterp; |
|
|
slavePtr->slaveEntryPtr = hPtr; |
|
|
slavePtr->slaveInterp = slaveInterp; |
|
|
slavePtr->interpCmd = Tcl_CreateObjCommand(masterInterp, path, |
|
|
SlaveObjCmd, (ClientData) slaveInterp, SlaveObjCmdDeleteProc); |
|
|
Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); |
|
|
Tcl_SetHashValue(hPtr, (ClientData) slavePtr); |
|
|
Tcl_SetVar(slaveInterp, "tcl_interactive", "0", TCL_GLOBAL_ONLY); |
|
|
|
|
|
/* |
|
|
* Inherit the recursion limit. |
|
|
*/ |
|
|
((Interp *) slaveInterp)->maxNestingDepth = |
|
|
((Interp *) masterInterp)->maxNestingDepth ; |
|
|
|
|
|
if (safe) { |
|
|
if (Tcl_MakeSafe(slaveInterp) == TCL_ERROR) { |
|
|
goto error; |
|
|
} |
|
|
} else { |
|
|
if (Tcl_Init(slaveInterp) == TCL_ERROR) { |
|
|
goto error; |
|
|
} |
|
|
} |
|
|
return slaveInterp; |
|
|
|
|
|
error: |
|
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
|
|
Tcl_DeleteInterp(slaveInterp); |
|
|
|
|
|
return NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveObjCmd -- |
|
|
* |
|
|
* Command to manipulate an interpreter, e.g. to send commands to it |
|
|
* to be evaluated. One such command exists for each slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* See user documentation for details. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveObjCmd(clientData, interp, objc, objv) |
|
|
ClientData clientData; /* Slave interpreter. */ |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
|
|
{ |
|
|
Tcl_Interp *slaveInterp; |
|
|
int index; |
|
|
static char *options[] = { |
|
|
"alias", "aliases", "eval", "expose", |
|
|
"hide", "hidden", "issafe", "invokehidden", |
|
|
"marktrusted", NULL |
|
|
}; |
|
|
enum options { |
|
|
OPT_ALIAS, OPT_ALIASES, OPT_EVAL, OPT_EXPOSE, |
|
|
OPT_HIDE, OPT_HIDDEN, OPT_ISSAFE, OPT_INVOKEHIDDEN, |
|
|
OPT_MARKTRUSTED |
|
|
}; |
|
|
|
|
|
slaveInterp = (Tcl_Interp *) clientData; |
|
|
if (slaveInterp == NULL) { |
|
|
panic("SlaveObjCmd: interpreter has been deleted"); |
|
|
} |
|
|
|
|
|
if (objc < 2) { |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, |
|
|
&index) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
switch ((enum options) index) { |
|
|
case OPT_ALIAS: { |
|
|
if (objc == 3) { |
|
|
return AliasDescribe(interp, slaveInterp, objv[2]); |
|
|
} |
|
|
if (Tcl_GetString(objv[3])[0] == '\0') { |
|
|
if (objc == 4) { |
|
|
return AliasDelete(interp, slaveInterp, objv[2]); |
|
|
} |
|
|
} else { |
|
|
return AliasCreate(interp, slaveInterp, interp, objv[2], |
|
|
objv[3], objc - 4, objv + 4); |
|
|
} |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"aliasName ?targetName? ?args..?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
case OPT_ALIASES: { |
|
|
return AliasList(interp, slaveInterp); |
|
|
} |
|
|
case OPT_EVAL: { |
|
|
if (objc < 3) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "arg ?arg ...?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveEval(interp, slaveInterp, objc - 2, objv + 2); |
|
|
} |
|
|
case OPT_EXPOSE: { |
|
|
if ((objc < 3) || (objc > 4)) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "hiddenCmdName ?cmdName?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveExpose(interp, slaveInterp, objc - 2, objv + 2); |
|
|
} |
|
|
case OPT_HIDE: { |
|
|
if ((objc < 3) || (objc > 4)) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, "cmdName ?hiddenCmdName?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveHide(interp, slaveInterp, objc - 2, objv + 2); |
|
|
} |
|
|
case OPT_HIDDEN: { |
|
|
if (objc != 2) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveHidden(interp, slaveInterp); |
|
|
} |
|
|
case OPT_ISSAFE: { |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp)); |
|
|
return TCL_OK; |
|
|
} |
|
|
case OPT_INVOKEHIDDEN: { |
|
|
int global, i, index; |
|
|
static char *hiddenOptions[] = { |
|
|
"-global", "--", NULL |
|
|
}; |
|
|
enum hiddenOption { |
|
|
OPT_GLOBAL, OPT_LAST |
|
|
}; |
|
|
global = 0; |
|
|
for (i = 2; i < objc; i++) { |
|
|
if (Tcl_GetString(objv[i])[0] != '-') { |
|
|
break; |
|
|
} |
|
|
if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, |
|
|
"option", 0, &index) != TCL_OK) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (index == OPT_GLOBAL) { |
|
|
global = 1; |
|
|
} else { |
|
|
i++; |
|
|
break; |
|
|
} |
|
|
} |
|
|
if (objc - i < 1) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, |
|
|
"?-global? ?--? cmd ?arg ..?"); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveInvokeHidden(interp, slaveInterp, global, objc - i, |
|
|
objv + i); |
|
|
} |
|
|
case OPT_MARKTRUSTED: { |
|
|
if (objc != 2) { |
|
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return SlaveMarkTrusted(interp, slaveInterp); |
|
|
} |
|
|
} |
|
|
|
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveObjCmdDeleteProc -- |
|
|
* |
|
|
* Invoked when an object command for a slave interpreter is deleted; |
|
|
* cleans up all state associated with the slave interpreter and destroys |
|
|
* the slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Cleans up all state associated with the slave interpreter and |
|
|
* destroys the slave interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
SlaveObjCmdDeleteProc(clientData) |
|
|
ClientData clientData; /* The SlaveRecord for the command. */ |
|
|
{ |
|
|
Slave *slavePtr; /* Interim storage for Slave record. */ |
|
|
Tcl_Interp *slaveInterp; /* And for a slave interp. */ |
|
|
|
|
|
slaveInterp = (Tcl_Interp *) clientData; |
|
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
|
|
|
|
|
/* |
|
|
* Unlink the slave from its master interpreter. |
|
|
*/ |
|
|
|
|
|
Tcl_DeleteHashEntry(slavePtr->slaveEntryPtr); |
|
|
|
|
|
/* |
|
|
* Set to NULL so that when the InterpInfo is cleaned up in the slave |
|
|
* it does not try to delete the command causing all sorts of grief. |
|
|
* See SlaveRecordDeleteProc(). |
|
|
*/ |
|
|
|
|
|
slavePtr->interpCmd = NULL; |
|
|
|
|
|
if (slavePtr->slaveInterp != NULL) { |
|
|
Tcl_DeleteInterp(slavePtr->slaveInterp); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveEval -- |
|
|
* |
|
|
* Helper function to evaluate a command in a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveEval(interp, slaveInterp, objc, objv) |
|
|
Tcl_Interp *interp; /* Interp for error return. */ |
|
|
Tcl_Interp *slaveInterp; /* The slave interpreter in which command |
|
|
* will be evaluated. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
|
|
{ |
|
|
int result; |
|
|
Tcl_Obj *objPtr; |
|
|
|
|
|
Tcl_Preserve((ClientData) slaveInterp); |
|
|
Tcl_AllowExceptions(slaveInterp); |
|
|
|
|
|
if (objc == 1) { |
|
|
result = Tcl_EvalObjEx(slaveInterp, objv[0], 0); |
|
|
} else { |
|
|
objPtr = Tcl_ConcatObj(objc, objv); |
|
|
Tcl_IncrRefCount(objPtr); |
|
|
result = Tcl_EvalObjEx(slaveInterp, objPtr, 0); |
|
|
Tcl_DecrRefCount(objPtr); |
|
|
} |
|
|
TclTransferResult(slaveInterp, result, interp); |
|
|
|
|
|
Tcl_Release((ClientData) slaveInterp); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveExpose -- |
|
|
* |
|
|
* Helper function to expose a command in a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* After this call scripts in the slave will be able to invoke |
|
|
* the newly exposed command. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveExpose(interp, slaveInterp, objc, objv) |
|
|
Tcl_Interp *interp; /* Interp for error return. */ |
|
|
Tcl_Interp *slaveInterp; /* Interp in which command will be exposed. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument strings. */ |
|
|
{ |
|
|
char *name; |
|
|
|
|
|
if (Tcl_IsSafe(interp)) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"permission denied: safe interpreter cannot expose commands", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]); |
|
|
if (Tcl_ExposeCommand(slaveInterp, Tcl_GetString(objv[0]), |
|
|
name) != TCL_OK) { |
|
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveHide -- |
|
|
* |
|
|
* Helper function to hide a command in a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* After this call scripts in the slave will no longer be able |
|
|
* to invoke the named command. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveHide(interp, slaveInterp, objc, objv) |
|
|
Tcl_Interp *interp; /* Interp for error return. */ |
|
|
Tcl_Interp *slaveInterp; /* Interp in which command will be exposed. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument strings. */ |
|
|
{ |
|
|
char *name; |
|
|
|
|
|
if (Tcl_IsSafe(interp)) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"permission denied: safe interpreter cannot hide commands", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]); |
|
|
if (Tcl_HideCommand(slaveInterp, Tcl_GetString(objv[0]), |
|
|
name) != TCL_OK) { |
|
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveHidden -- |
|
|
* |
|
|
* Helper function to compute list of hidden commands in a slave |
|
|
* interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveHidden(interp, slaveInterp) |
|
|
Tcl_Interp *interp; /* Interp for data return. */ |
|
|
Tcl_Interp *slaveInterp; /* Interp whose hidden commands to query. */ |
|
|
{ |
|
|
Tcl_Obj *listObjPtr; /* Local object pointer. */ |
|
|
Tcl_HashTable *hTblPtr; /* For local searches. */ |
|
|
Tcl_HashEntry *hPtr; /* For local searches. */ |
|
|
Tcl_HashSearch hSearch; /* For local searches. */ |
|
|
|
|
|
listObjPtr = Tcl_GetObjResult(interp); |
|
|
hTblPtr = ((Interp *) slaveInterp)->hiddenCmdTablePtr; |
|
|
if (hTblPtr != (Tcl_HashTable *) NULL) { |
|
|
for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch); |
|
|
hPtr != (Tcl_HashEntry *) NULL; |
|
|
hPtr = Tcl_NextHashEntry(&hSearch)) { |
|
|
|
|
|
Tcl_ListObjAppendElement(NULL, listObjPtr, |
|
|
Tcl_NewStringObj(Tcl_GetHashKey(hTblPtr, hPtr), -1)); |
|
|
} |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveInvokeHidden -- |
|
|
* |
|
|
* Helper function to invoke a hidden command in a slave interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the hidden command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveInvokeHidden(interp, slaveInterp, global, objc, objv) |
|
|
Tcl_Interp *interp; /* Interp for error return. */ |
|
|
Tcl_Interp *slaveInterp; /* The slave interpreter in which command |
|
|
* will be invoked. */ |
|
|
int global; /* Non-zero to invoke in global namespace. */ |
|
|
int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
|
|
{ |
|
|
int result; |
|
|
|
|
|
if (Tcl_IsSafe(interp)) { |
|
|
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
|
|
"not allowed to invoke hidden commands from safe interpreter", |
|
|
-1); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
Tcl_Preserve((ClientData) slaveInterp); |
|
|
Tcl_AllowExceptions(slaveInterp); |
|
|
|
|
|
if (global) { |
|
|
result = TclObjInvokeGlobal(slaveInterp, objc, objv, |
|
|
TCL_INVOKE_HIDDEN); |
|
|
} else { |
|
|
result = TclObjInvoke(slaveInterp, objc, objv, TCL_INVOKE_HIDDEN); |
|
|
} |
|
|
|
|
|
TclTransferResult(slaveInterp, result, interp); |
|
|
|
|
|
Tcl_Release((ClientData) slaveInterp); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* SlaveMarkTrusted -- |
|
|
* |
|
|
* Helper function to mark a slave interpreter as trusted (unsafe). |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* After this call the hard-wired security checks in the core no |
|
|
* longer prevent the slave from performing certain operations. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static int |
|
|
SlaveMarkTrusted(interp, slaveInterp) |
|
|
Tcl_Interp *interp; /* Interp for error return. */ |
|
|
Tcl_Interp *slaveInterp; /* The slave interpreter which will be |
|
|
* marked trusted. */ |
|
|
{ |
|
|
if (Tcl_IsSafe(interp)) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"permission denied: safe interpreter cannot mark trusted", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
((Interp *) slaveInterp)->flags &= ~SAFE_INTERP; |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_IsSafe -- |
|
|
* |
|
|
* Determines whether an interpreter is safe |
|
|
* |
|
|
* Results: |
|
|
* 1 if it is safe, 0 if it is not. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_IsSafe(interp) |
|
|
Tcl_Interp *interp; /* Is this interpreter "safe" ? */ |
|
|
{ |
|
|
Interp *iPtr; |
|
|
|
|
|
if (interp == (Tcl_Interp *) NULL) { |
|
|
return 0; |
|
|
} |
|
|
iPtr = (Interp *) interp; |
|
|
|
|
|
return ( (iPtr->flags) & SAFE_INTERP ) ? 1 : 0 ; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_MakeSafe -- |
|
|
* |
|
|
* 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 |
|
|
Tcl_MakeSafe(interp) |
|
|
Tcl_Interp *interp; /* Interpreter to be made safe. */ |
|
|
{ |
|
|
Tcl_Channel chan; /* Channel to remove from |
|
|
* safe interpreter. */ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
|
|
|
TclHideUnsafeCommands(interp); |
|
|
|
|
|
iPtr->flags |= SAFE_INTERP; |
|
|
|
|
|
/* |
|
|
* Unsetting variables : (which should not have been set |
|
|
* in the first place, but...) |
|
|
*/ |
|
|
|
|
|
/* |
|
|
* No env array in a safe slave. |
|
|
*/ |
|
|
|
|
|
Tcl_UnsetVar(interp, "env", TCL_GLOBAL_ONLY); |
|
|
|
|
|
/* |
|
|
* Remove unsafe parts of tcl_platform |
|
|
*/ |
|
|
|
|
|
Tcl_UnsetVar2(interp, "tcl_platform", "os", TCL_GLOBAL_ONLY); |
|
|
Tcl_UnsetVar2(interp, "tcl_platform", "osVersion", TCL_GLOBAL_ONLY); |
|
|
Tcl_UnsetVar2(interp, "tcl_platform", "machine", TCL_GLOBAL_ONLY); |
|
|
Tcl_UnsetVar2(interp, "tcl_platform", "user", TCL_GLOBAL_ONLY); |
|
|
|
|
|
/* |
|
|
* Unset path informations variables |
|
|
* (the only one remaining is [info nameofexecutable]) |
|
|
*/ |
|
|
|
|
|
Tcl_UnsetVar(interp, "tclDefaultLibrary", TCL_GLOBAL_ONLY); |
|
|
Tcl_UnsetVar(interp, "tcl_library", TCL_GLOBAL_ONLY); |
|
|
Tcl_UnsetVar(interp, "tcl_pkgPath", TCL_GLOBAL_ONLY); |
|
|
|
|
|
/* |
|
|
* Remove the standard channels from the interpreter; safe interpreters |
|
|
* do not ordinarily have access to stdin, stdout and stderr. |
|
|
* |
|
|
* NOTE: These channels are not added to the interpreter by the |
|
|
* Tcl_CreateInterp call, but may be added later, by another I/O |
|
|
* operation. We want to ensure that the interpreter does not have |
|
|
* these channels even if it is being made safe after being used for |
|
|
* some time.. |
|
|
*/ |
|
|
|
|
|
chan = Tcl_GetStdChannel(TCL_STDIN); |
|
|
if (chan != (Tcl_Channel) NULL) { |
|
|
Tcl_UnregisterChannel(interp, chan); |
|
|
} |
|
|
chan = Tcl_GetStdChannel(TCL_STDOUT); |
|
|
if (chan != (Tcl_Channel) NULL) { |
|
|
Tcl_UnregisterChannel(interp, chan); |
|
|
} |
|
|
chan = Tcl_GetStdChannel(TCL_STDERR); |
|
|
if (chan != (Tcl_Channel) NULL) { |
|
|
Tcl_UnregisterChannel(interp, chan); |
|
|
} |
|
|
|
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
|
|
|
/* $History: tclinterp.c $ |
|
|
* |
|
|
* ***************** Version 1 ***************** |
|
|
* User: Dtashley Date: 1/02/01 Time: 1:29a |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tcl Base |
|
|
* Initial check-in. |
|
|
*/ |
|
|
|
|
|
/* End of TCLINTERP.C */ |
|
| 1 |
|
/* $Header$ */ |
| 2 |
|
/* |
| 3 |
|
* tclInterp.c -- |
| 4 |
|
* |
| 5 |
|
* This file implements the "interp" command which allows creation |
| 6 |
|
* and manipulation of Tcl interpreters from within Tcl scripts. |
| 7 |
|
* |
| 8 |
|
* Copyright (c) 1995-1997 Sun Microsystems, Inc. |
| 9 |
|
* |
| 10 |
|
* See the file "license.terms" for information on usage and redistribution |
| 11 |
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 12 |
|
* |
| 13 |
|
* RCS: @(#) $Id: tclinterp.c,v 1.1.1.1 2001/06/13 04:40:36 dtashley Exp $ |
| 14 |
|
*/ |
| 15 |
|
|
| 16 |
|
#include <stdio.h> |
| 17 |
|
#include "tclInt.h" |
| 18 |
|
#include "tclPort.h" |
| 19 |
|
|
| 20 |
|
/* |
| 21 |
|
* Counter for how many aliases were created (global) |
| 22 |
|
*/ |
| 23 |
|
|
| 24 |
|
static int aliasCounter = 0; |
| 25 |
|
TCL_DECLARE_MUTEX(cntMutex) |
| 26 |
|
|
| 27 |
|
/* |
| 28 |
|
* struct Alias: |
| 29 |
|
* |
| 30 |
|
* Stores information about an alias. Is stored in the slave interpreter |
| 31 |
|
* and used by the source command to find the target command in the master |
| 32 |
|
* when the source command is invoked. |
| 33 |
|
*/ |
| 34 |
|
|
| 35 |
|
typedef struct Alias { |
| 36 |
|
Tcl_Obj *namePtr; /* Name of alias command in slave interp. */ |
| 37 |
|
Tcl_Interp *targetInterp; /* Interp in which target command will be |
| 38 |
|
* invoked. */ |
| 39 |
|
Tcl_Obj *prefixPtr; /* Tcl list making up the prefix of the |
| 40 |
|
* target command to be invoked in the target |
| 41 |
|
* interpreter. Additional arguments |
| 42 |
|
* specified when calling the alias in the |
| 43 |
|
* slave interp will be appended to the prefix |
| 44 |
|
* before the command is invoked. */ |
| 45 |
|
Tcl_Command slaveCmd; /* Source command in slave interpreter, |
| 46 |
|
* bound to command that invokes the target |
| 47 |
|
* command in the target interpreter. */ |
| 48 |
|
Tcl_HashEntry *aliasEntryPtr; |
| 49 |
|
/* Entry for the alias hash table in slave. |
| 50 |
|
* This is used by alias deletion to remove |
| 51 |
|
* the alias from the slave interpreter |
| 52 |
|
* alias table. */ |
| 53 |
|
Tcl_HashEntry *targetEntryPtr; |
| 54 |
|
/* Entry for target command in master. |
| 55 |
|
* This is used in the master interpreter to |
| 56 |
|
* map back from the target command to aliases |
| 57 |
|
* redirecting to it. Random access to this |
| 58 |
|
* hash table is never required - we are using |
| 59 |
|
* a hash table only for convenience. */ |
| 60 |
|
} Alias; |
| 61 |
|
|
| 62 |
|
/* |
| 63 |
|
* |
| 64 |
|
* struct Slave: |
| 65 |
|
* |
| 66 |
|
* Used by the "interp" command to record and find information about slave |
| 67 |
|
* interpreters. Maps from a command name in the master to information about |
| 68 |
|
* a slave interpreter, e.g. what aliases are defined in it. |
| 69 |
|
*/ |
| 70 |
|
|
| 71 |
|
typedef struct Slave { |
| 72 |
|
Tcl_Interp *masterInterp; /* Master interpreter for this slave. */ |
| 73 |
|
Tcl_HashEntry *slaveEntryPtr; |
| 74 |
|
/* Hash entry in masters slave table for |
| 75 |
|
* this slave interpreter. Used to find |
| 76 |
|
* this record, and used when deleting the |
| 77 |
|
* slave interpreter to delete it from the |
| 78 |
|
* master's table. */ |
| 79 |
|
Tcl_Interp *slaveInterp; /* The slave interpreter. */ |
| 80 |
|
Tcl_Command interpCmd; /* Interpreter object command. */ |
| 81 |
|
Tcl_HashTable aliasTable; /* Table which maps from names of commands |
| 82 |
|
* in slave interpreter to struct Alias |
| 83 |
|
* defined below. */ |
| 84 |
|
} Slave; |
| 85 |
|
|
| 86 |
|
/* |
| 87 |
|
* struct Target: |
| 88 |
|
* |
| 89 |
|
* Maps from master interpreter commands back to the source commands in slave |
| 90 |
|
* interpreters. This is needed because aliases can be created between sibling |
| 91 |
|
* interpreters and must be deleted when the target interpreter is deleted. In |
| 92 |
|
* case they would not be deleted the source interpreter would be left with a |
| 93 |
|
* "dangling pointer". One such record is stored in the Master record of the |
| 94 |
|
* master interpreter (in the targetTable hashtable, see below) with the |
| 95 |
|
* master for each alias which directs to a command in the master. These |
| 96 |
|
* records are used to remove the source command for an from a slave if/when |
| 97 |
|
* the master is deleted. |
| 98 |
|
*/ |
| 99 |
|
|
| 100 |
|
typedef struct Target { |
| 101 |
|
Tcl_Command slaveCmd; /* Command for alias in slave interp. */ |
| 102 |
|
Tcl_Interp *slaveInterp; /* Slave Interpreter. */ |
| 103 |
|
} Target; |
| 104 |
|
|
| 105 |
|
/* |
| 106 |
|
* struct Master: |
| 107 |
|
* |
| 108 |
|
* This record is used for two purposes: First, slaveTable (a hashtable) |
| 109 |
|
* maps from names of commands to slave interpreters. This hashtable is |
| 110 |
|
* used to store information about slave interpreters of this interpreter, |
| 111 |
|
* to map over all slaves, etc. The second purpose is to store information |
| 112 |
|
* about all aliases in slaves (or siblings) which direct to target commands |
| 113 |
|
* in this interpreter (using the targetTable hashtable). |
| 114 |
|
* |
| 115 |
|
* NB: the flags field in the interp structure, used with SAFE_INTERP |
| 116 |
|
* mask denotes whether the interpreter is safe or not. Safe |
| 117 |
|
* interpreters have restricted functionality, can only create safe slave |
| 118 |
|
* interpreters and can only load safe extensions. |
| 119 |
|
*/ |
| 120 |
|
|
| 121 |
|
typedef struct Master { |
| 122 |
|
Tcl_HashTable slaveTable; /* Hash table for slave interpreters. |
| 123 |
|
* Maps from command names to Slave records. */ |
| 124 |
|
Tcl_HashTable targetTable; /* Hash table for Target Records. Contains |
| 125 |
|
* all Target records which denote aliases |
| 126 |
|
* from slaves or sibling interpreters that |
| 127 |
|
* direct to commands in this interpreter. This |
| 128 |
|
* table is used to remove dangling pointers |
| 129 |
|
* from the slave (or sibling) interpreters |
| 130 |
|
* when this interpreter is deleted. */ |
| 131 |
|
} Master; |
| 132 |
|
|
| 133 |
|
/* |
| 134 |
|
* The following structure keeps track of all the Master and Slave information |
| 135 |
|
* on a per-interp basis. |
| 136 |
|
*/ |
| 137 |
|
|
| 138 |
|
typedef struct InterpInfo { |
| 139 |
|
Master master; /* Keeps track of all interps for which this |
| 140 |
|
* interp is the Master. */ |
| 141 |
|
Slave slave; /* Information necessary for this interp to |
| 142 |
|
* function as a slave. */ |
| 143 |
|
} InterpInfo; |
| 144 |
|
|
| 145 |
|
/* |
| 146 |
|
* Prototypes for local static procedures: |
| 147 |
|
*/ |
| 148 |
|
|
| 149 |
|
static int AliasCreate _ANSI_ARGS_((Tcl_Interp *interp, |
| 150 |
|
Tcl_Interp *slaveInterp, Tcl_Interp *masterInterp, |
| 151 |
|
Tcl_Obj *namePtr, Tcl_Obj *targetPtr, int objc, |
| 152 |
|
Tcl_Obj *CONST objv[])); |
| 153 |
|
static int AliasDelete _ANSI_ARGS_((Tcl_Interp *interp, |
| 154 |
|
Tcl_Interp *slaveInterp, Tcl_Obj *namePtr)); |
| 155 |
|
static int AliasDescribe _ANSI_ARGS_((Tcl_Interp *interp, |
| 156 |
|
Tcl_Interp *slaveInterp, Tcl_Obj *objPtr)); |
| 157 |
|
static int AliasList _ANSI_ARGS_((Tcl_Interp *interp, |
| 158 |
|
Tcl_Interp *slaveInterp)); |
| 159 |
|
static int AliasObjCmd _ANSI_ARGS_((ClientData dummy, |
| 160 |
|
Tcl_Interp *currentInterp, int objc, |
| 161 |
|
Tcl_Obj *CONST objv[])); |
| 162 |
|
static void AliasObjCmdDeleteProc _ANSI_ARGS_(( |
| 163 |
|
ClientData clientData)); |
| 164 |
|
|
| 165 |
|
static Tcl_Interp * GetInterp _ANSI_ARGS_((Tcl_Interp *interp, |
| 166 |
|
Tcl_Obj *pathPtr)); |
| 167 |
|
static Tcl_Interp * GetInterp2 _ANSI_ARGS_((Tcl_Interp *interp, int objc, |
| 168 |
|
Tcl_Obj *CONST objv[])); |
| 169 |
|
static void InterpInfoDeleteProc _ANSI_ARGS_(( |
| 170 |
|
ClientData clientData, Tcl_Interp *interp)); |
| 171 |
|
static Tcl_Interp * SlaveCreate _ANSI_ARGS_((Tcl_Interp *interp, |
| 172 |
|
Tcl_Obj *pathPtr, int safe)); |
| 173 |
|
static int SlaveEval _ANSI_ARGS_((Tcl_Interp *interp, |
| 174 |
|
Tcl_Interp *slaveInterp, int objc, |
| 175 |
|
Tcl_Obj *CONST objv[])); |
| 176 |
|
static int SlaveExpose _ANSI_ARGS_((Tcl_Interp *interp, |
| 177 |
|
Tcl_Interp *slaveInterp, int objc, |
| 178 |
|
Tcl_Obj *CONST objv[])); |
| 179 |
|
static int SlaveHide _ANSI_ARGS_((Tcl_Interp *interp, |
| 180 |
|
Tcl_Interp *slaveInterp, int objc, |
| 181 |
|
Tcl_Obj *CONST objv[])); |
| 182 |
|
static int SlaveHidden _ANSI_ARGS_((Tcl_Interp *interp, |
| 183 |
|
Tcl_Interp *slaveInterp)); |
| 184 |
|
static int SlaveInvokeHidden _ANSI_ARGS_((Tcl_Interp *interp, |
| 185 |
|
Tcl_Interp *slaveInterp, int global, int objc, |
| 186 |
|
Tcl_Obj *CONST objv[])); |
| 187 |
|
static int SlaveMarkTrusted _ANSI_ARGS_((Tcl_Interp *interp, |
| 188 |
|
Tcl_Interp *slaveInterp)); |
| 189 |
|
static int SlaveObjCmd _ANSI_ARGS_((ClientData dummy, |
| 190 |
|
Tcl_Interp *interp, int objc, |
| 191 |
|
Tcl_Obj *CONST objv[])); |
| 192 |
|
static void SlaveObjCmdDeleteProc _ANSI_ARGS_(( |
| 193 |
|
ClientData clientData)); |
| 194 |
|
|
| 195 |
|
/* |
| 196 |
|
*--------------------------------------------------------------------------- |
| 197 |
|
* |
| 198 |
|
* TclInterpInit -- |
| 199 |
|
* |
| 200 |
|
* Initializes the invoking interpreter for using the master, slave |
| 201 |
|
* and safe interp facilities. This is called from inside |
| 202 |
|
* Tcl_CreateInterp(). |
| 203 |
|
* |
| 204 |
|
* Results: |
| 205 |
|
* Always returns TCL_OK for backwards compatibility. |
| 206 |
|
* |
| 207 |
|
* Side effects: |
| 208 |
|
* Adds the "interp" command to an interpreter and initializes the |
| 209 |
|
* interpInfoPtr field of the invoking interpreter. |
| 210 |
|
* |
| 211 |
|
*--------------------------------------------------------------------------- |
| 212 |
|
*/ |
| 213 |
|
|
| 214 |
|
int |
| 215 |
|
TclInterpInit(interp) |
| 216 |
|
Tcl_Interp *interp; /* Interpreter to initialize. */ |
| 217 |
|
{ |
| 218 |
|
InterpInfo *interpInfoPtr; |
| 219 |
|
Master *masterPtr; |
| 220 |
|
Slave *slavePtr; |
| 221 |
|
|
| 222 |
|
interpInfoPtr = (InterpInfo *) ckalloc(sizeof(InterpInfo)); |
| 223 |
|
((Interp *) interp)->interpInfo = (ClientData) interpInfoPtr; |
| 224 |
|
|
| 225 |
|
masterPtr = &interpInfoPtr->master; |
| 226 |
|
Tcl_InitHashTable(&masterPtr->slaveTable, TCL_STRING_KEYS); |
| 227 |
|
Tcl_InitHashTable(&masterPtr->targetTable, TCL_ONE_WORD_KEYS); |
| 228 |
|
|
| 229 |
|
slavePtr = &interpInfoPtr->slave; |
| 230 |
|
slavePtr->masterInterp = NULL; |
| 231 |
|
slavePtr->slaveEntryPtr = NULL; |
| 232 |
|
slavePtr->slaveInterp = interp; |
| 233 |
|
slavePtr->interpCmd = NULL; |
| 234 |
|
Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); |
| 235 |
|
|
| 236 |
|
Tcl_CreateObjCommand(interp, "interp", Tcl_InterpObjCmd, NULL, NULL); |
| 237 |
|
|
| 238 |
|
Tcl_CallWhenDeleted(interp, InterpInfoDeleteProc, NULL); |
| 239 |
|
return TCL_OK; |
| 240 |
|
} |
| 241 |
|
|
| 242 |
|
/* |
| 243 |
|
*--------------------------------------------------------------------------- |
| 244 |
|
* |
| 245 |
|
* InterpInfoDeleteProc -- |
| 246 |
|
* |
| 247 |
|
* Invoked when an interpreter is being deleted. It releases all |
| 248 |
|
* storage used by the master/slave/safe interpreter facilities. |
| 249 |
|
* |
| 250 |
|
* Results: |
| 251 |
|
* None. |
| 252 |
|
* |
| 253 |
|
* Side effects: |
| 254 |
|
* Cleans up storage. Sets the interpInfoPtr field of the interp |
| 255 |
|
* to NULL. |
| 256 |
|
* |
| 257 |
|
*--------------------------------------------------------------------------- |
| 258 |
|
*/ |
| 259 |
|
|
| 260 |
|
static void |
| 261 |
|
InterpInfoDeleteProc(clientData, interp) |
| 262 |
|
ClientData clientData; /* Ignored. */ |
| 263 |
|
Tcl_Interp *interp; /* Interp being deleted. All commands for |
| 264 |
|
* slave interps should already be deleted. */ |
| 265 |
|
{ |
| 266 |
|
InterpInfo *interpInfoPtr; |
| 267 |
|
Slave *slavePtr; |
| 268 |
|
Master *masterPtr; |
| 269 |
|
Tcl_HashSearch hSearch; |
| 270 |
|
Tcl_HashEntry *hPtr; |
| 271 |
|
Target *targetPtr; |
| 272 |
|
|
| 273 |
|
interpInfoPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
| 274 |
|
|
| 275 |
|
/* |
| 276 |
|
* There shouldn't be any commands left. |
| 277 |
|
*/ |
| 278 |
|
|
| 279 |
|
masterPtr = &interpInfoPtr->master; |
| 280 |
|
if (masterPtr->slaveTable.numEntries != 0) { |
| 281 |
|
panic("InterpInfoDeleteProc: still exist commands"); |
| 282 |
|
} |
| 283 |
|
Tcl_DeleteHashTable(&masterPtr->slaveTable); |
| 284 |
|
|
| 285 |
|
/* |
| 286 |
|
* Tell any interps that have aliases to this interp that they should |
| 287 |
|
* delete those aliases. If the other interp was already dead, it |
| 288 |
|
* would have removed the target record already. |
| 289 |
|
*/ |
| 290 |
|
|
| 291 |
|
hPtr = Tcl_FirstHashEntry(&masterPtr->targetTable, &hSearch); |
| 292 |
|
while (hPtr != NULL) { |
| 293 |
|
targetPtr = (Target *) Tcl_GetHashValue(hPtr); |
| 294 |
|
Tcl_DeleteCommandFromToken(targetPtr->slaveInterp, |
| 295 |
|
targetPtr->slaveCmd); |
| 296 |
|
hPtr = Tcl_NextHashEntry(&hSearch); |
| 297 |
|
} |
| 298 |
|
Tcl_DeleteHashTable(&masterPtr->targetTable); |
| 299 |
|
|
| 300 |
|
slavePtr = &interpInfoPtr->slave; |
| 301 |
|
if (slavePtr->interpCmd != NULL) { |
| 302 |
|
/* |
| 303 |
|
* Tcl_DeleteInterp() was called on this interpreter, rather |
| 304 |
|
* "interp delete" or the equivalent deletion of the command in the |
| 305 |
|
* master. First ensure that the cleanup callback doesn't try to |
| 306 |
|
* delete the interp again. |
| 307 |
|
*/ |
| 308 |
|
|
| 309 |
|
slavePtr->slaveInterp = NULL; |
| 310 |
|
Tcl_DeleteCommandFromToken(slavePtr->masterInterp, |
| 311 |
|
slavePtr->interpCmd); |
| 312 |
|
} |
| 313 |
|
|
| 314 |
|
/* |
| 315 |
|
* There shouldn't be any aliases left. |
| 316 |
|
*/ |
| 317 |
|
|
| 318 |
|
if (slavePtr->aliasTable.numEntries != 0) { |
| 319 |
|
panic("InterpInfoDeleteProc: still exist aliases"); |
| 320 |
|
} |
| 321 |
|
Tcl_DeleteHashTable(&slavePtr->aliasTable); |
| 322 |
|
|
| 323 |
|
ckfree((char *) interpInfoPtr); |
| 324 |
|
} |
| 325 |
|
|
| 326 |
|
/* |
| 327 |
|
*---------------------------------------------------------------------- |
| 328 |
|
* |
| 329 |
|
* Tcl_InterpObjCmd -- |
| 330 |
|
* |
| 331 |
|
* This procedure is invoked to process the "interp" Tcl command. |
| 332 |
|
* See the user documentation for details on what it does. |
| 333 |
|
* |
| 334 |
|
* Results: |
| 335 |
|
* A standard Tcl result. |
| 336 |
|
* |
| 337 |
|
* Side effects: |
| 338 |
|
* See the user documentation. |
| 339 |
|
* |
| 340 |
|
*---------------------------------------------------------------------- |
| 341 |
|
*/ |
| 342 |
|
/* ARGSUSED */ |
| 343 |
|
int |
| 344 |
|
Tcl_InterpObjCmd(clientData, interp, objc, objv) |
| 345 |
|
ClientData clientData; /* Unused. */ |
| 346 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 347 |
|
int objc; /* Number of arguments. */ |
| 348 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 349 |
|
{ |
| 350 |
|
int index; |
| 351 |
|
static char *options[] = { |
| 352 |
|
"alias", "aliases", "create", "delete", |
| 353 |
|
"eval", "exists", "expose", "hide", |
| 354 |
|
"hidden", "issafe", "invokehidden", "marktrusted", |
| 355 |
|
"slaves", "share", "target", "transfer", |
| 356 |
|
NULL |
| 357 |
|
}; |
| 358 |
|
enum option { |
| 359 |
|
OPT_ALIAS, OPT_ALIASES, OPT_CREATE, OPT_DELETE, |
| 360 |
|
OPT_EVAL, OPT_EXISTS, OPT_EXPOSE, OPT_HIDE, |
| 361 |
|
OPT_HIDDEN, OPT_ISSAFE, OPT_INVOKEHID, OPT_MARKTRUSTED, |
| 362 |
|
OPT_SLAVES, OPT_SHARE, OPT_TARGET, OPT_TRANSFER |
| 363 |
|
}; |
| 364 |
|
|
| 365 |
|
|
| 366 |
|
if (objc < 2) { |
| 367 |
|
Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?"); |
| 368 |
|
return TCL_ERROR; |
| 369 |
|
} |
| 370 |
|
if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, |
| 371 |
|
&index) != TCL_OK) { |
| 372 |
|
return TCL_ERROR; |
| 373 |
|
} |
| 374 |
|
switch ((enum option) index) { |
| 375 |
|
case OPT_ALIAS: { |
| 376 |
|
Tcl_Interp *slaveInterp, *masterInterp; |
| 377 |
|
|
| 378 |
|
if (objc < 4) { |
| 379 |
|
aliasArgs: |
| 380 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 381 |
|
"slavePath slaveCmd ?masterPath masterCmd? ?args ..?"); |
| 382 |
|
return TCL_ERROR; |
| 383 |
|
} |
| 384 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 385 |
|
if (slaveInterp == (Tcl_Interp *) NULL) { |
| 386 |
|
return TCL_ERROR; |
| 387 |
|
} |
| 388 |
|
if (objc == 4) { |
| 389 |
|
return AliasDescribe(interp, slaveInterp, objv[3]); |
| 390 |
|
} |
| 391 |
|
if ((objc == 5) && (Tcl_GetString(objv[4])[0] == '\0')) { |
| 392 |
|
return AliasDelete(interp, slaveInterp, objv[3]); |
| 393 |
|
} |
| 394 |
|
if (objc > 5) { |
| 395 |
|
masterInterp = GetInterp(interp, objv[4]); |
| 396 |
|
if (masterInterp == (Tcl_Interp *) NULL) { |
| 397 |
|
return TCL_ERROR; |
| 398 |
|
} |
| 399 |
|
if (Tcl_GetString(objv[5])[0] == '\0') { |
| 400 |
|
if (objc == 6) { |
| 401 |
|
return AliasDelete(interp, slaveInterp, objv[3]); |
| 402 |
|
} |
| 403 |
|
} else { |
| 404 |
|
return AliasCreate(interp, slaveInterp, masterInterp, |
| 405 |
|
objv[3], objv[5], objc - 6, objv + 6); |
| 406 |
|
} |
| 407 |
|
} |
| 408 |
|
goto aliasArgs; |
| 409 |
|
} |
| 410 |
|
case OPT_ALIASES: { |
| 411 |
|
Tcl_Interp *slaveInterp; |
| 412 |
|
|
| 413 |
|
slaveInterp = GetInterp2(interp, objc, objv); |
| 414 |
|
if (slaveInterp == NULL) { |
| 415 |
|
return TCL_ERROR; |
| 416 |
|
} |
| 417 |
|
return AliasList(interp, slaveInterp); |
| 418 |
|
} |
| 419 |
|
case OPT_CREATE: { |
| 420 |
|
int i, last, safe; |
| 421 |
|
Tcl_Obj *slavePtr; |
| 422 |
|
char buf[16 + TCL_INTEGER_SPACE]; |
| 423 |
|
static char *options[] = { |
| 424 |
|
"-safe", "--", NULL |
| 425 |
|
}; |
| 426 |
|
enum option { |
| 427 |
|
OPT_SAFE, OPT_LAST |
| 428 |
|
}; |
| 429 |
|
|
| 430 |
|
safe = Tcl_IsSafe(interp); |
| 431 |
|
|
| 432 |
|
/* |
| 433 |
|
* Weird historical rules: "-safe" is accepted at the end, too. |
| 434 |
|
*/ |
| 435 |
|
|
| 436 |
|
slavePtr = NULL; |
| 437 |
|
last = 0; |
| 438 |
|
for (i = 2; i < objc; i++) { |
| 439 |
|
if ((last == 0) && (Tcl_GetString(objv[i])[0] == '-')) { |
| 440 |
|
if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", |
| 441 |
|
0, &index) != TCL_OK) { |
| 442 |
|
return TCL_ERROR; |
| 443 |
|
} |
| 444 |
|
if (index == OPT_SAFE) { |
| 445 |
|
safe = 1; |
| 446 |
|
continue; |
| 447 |
|
} |
| 448 |
|
i++; |
| 449 |
|
last = 1; |
| 450 |
|
} |
| 451 |
|
if (slavePtr != NULL) { |
| 452 |
|
Tcl_WrongNumArgs(interp, 2, objv, "?-safe? ?--? ?path?"); |
| 453 |
|
return TCL_ERROR; |
| 454 |
|
} |
| 455 |
|
slavePtr = objv[i]; |
| 456 |
|
} |
| 457 |
|
buf[0] = '\0'; |
| 458 |
|
if (slavePtr == NULL) { |
| 459 |
|
/* |
| 460 |
|
* Create an anonymous interpreter -- we choose its name and |
| 461 |
|
* the name of the command. We check that the command name |
| 462 |
|
* that we use for the interpreter does not collide with an |
| 463 |
|
* existing command in the master interpreter. |
| 464 |
|
*/ |
| 465 |
|
|
| 466 |
|
for (i = 0; ; i++) { |
| 467 |
|
Tcl_CmdInfo cmdInfo; |
| 468 |
|
|
| 469 |
|
sprintf(buf, "interp%d", i); |
| 470 |
|
if (Tcl_GetCommandInfo(interp, buf, &cmdInfo) == 0) { |
| 471 |
|
break; |
| 472 |
|
} |
| 473 |
|
} |
| 474 |
|
slavePtr = Tcl_NewStringObj(buf, -1); |
| 475 |
|
} |
| 476 |
|
if (SlaveCreate(interp, slavePtr, safe) == NULL) { |
| 477 |
|
if (buf[0] != '\0') { |
| 478 |
|
Tcl_DecrRefCount(slavePtr); |
| 479 |
|
} |
| 480 |
|
return TCL_ERROR; |
| 481 |
|
} |
| 482 |
|
Tcl_SetObjResult(interp, slavePtr); |
| 483 |
|
return TCL_OK; |
| 484 |
|
} |
| 485 |
|
case OPT_DELETE: { |
| 486 |
|
int i; |
| 487 |
|
InterpInfo *iiPtr; |
| 488 |
|
Tcl_Interp *slaveInterp; |
| 489 |
|
|
| 490 |
|
for (i = 2; i < objc; i++) { |
| 491 |
|
slaveInterp = GetInterp(interp, objv[i]); |
| 492 |
|
if (slaveInterp == NULL) { |
| 493 |
|
return TCL_ERROR; |
| 494 |
|
} else if (slaveInterp == interp) { |
| 495 |
|
Tcl_ResetResult(interp); |
| 496 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 497 |
|
"cannot delete the current interpreter", |
| 498 |
|
(char *) NULL); |
| 499 |
|
return TCL_ERROR; |
| 500 |
|
} |
| 501 |
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
| 502 |
|
Tcl_DeleteCommandFromToken(iiPtr->slave.masterInterp, |
| 503 |
|
iiPtr->slave.interpCmd); |
| 504 |
|
} |
| 505 |
|
return TCL_OK; |
| 506 |
|
} |
| 507 |
|
case OPT_EVAL: { |
| 508 |
|
Tcl_Interp *slaveInterp; |
| 509 |
|
|
| 510 |
|
if (objc < 4) { |
| 511 |
|
Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?"); |
| 512 |
|
return TCL_ERROR; |
| 513 |
|
} |
| 514 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 515 |
|
if (slaveInterp == NULL) { |
| 516 |
|
return TCL_ERROR; |
| 517 |
|
} |
| 518 |
|
return SlaveEval(interp, slaveInterp, objc - 3, objv + 3); |
| 519 |
|
} |
| 520 |
|
case OPT_EXISTS: { |
| 521 |
|
int exists; |
| 522 |
|
Tcl_Interp *slaveInterp; |
| 523 |
|
|
| 524 |
|
exists = 1; |
| 525 |
|
slaveInterp = GetInterp2(interp, objc, objv); |
| 526 |
|
if (slaveInterp == NULL) { |
| 527 |
|
if (objc > 3) { |
| 528 |
|
return TCL_ERROR; |
| 529 |
|
} |
| 530 |
|
Tcl_ResetResult(interp); |
| 531 |
|
exists = 0; |
| 532 |
|
} |
| 533 |
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), exists); |
| 534 |
|
return TCL_OK; |
| 535 |
|
} |
| 536 |
|
case OPT_EXPOSE: { |
| 537 |
|
Tcl_Interp *slaveInterp; |
| 538 |
|
|
| 539 |
|
if ((objc < 4) || (objc > 5)) { |
| 540 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 541 |
|
"path hiddenCmdName ?cmdName?"); |
| 542 |
|
return TCL_ERROR; |
| 543 |
|
} |
| 544 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 545 |
|
if (slaveInterp == NULL) { |
| 546 |
|
return TCL_ERROR; |
| 547 |
|
} |
| 548 |
|
return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3); |
| 549 |
|
} |
| 550 |
|
case OPT_HIDE: { |
| 551 |
|
Tcl_Interp *slaveInterp; /* A slave. */ |
| 552 |
|
|
| 553 |
|
if ((objc < 4) || (objc > 5)) { |
| 554 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 555 |
|
"path cmdName ?hiddenCmdName?"); |
| 556 |
|
return TCL_ERROR; |
| 557 |
|
} |
| 558 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 559 |
|
if (slaveInterp == (Tcl_Interp *) NULL) { |
| 560 |
|
return TCL_ERROR; |
| 561 |
|
} |
| 562 |
|
return SlaveHide(interp, slaveInterp, objc - 3, objv + 3); |
| 563 |
|
} |
| 564 |
|
case OPT_HIDDEN: { |
| 565 |
|
Tcl_Interp *slaveInterp; /* A slave. */ |
| 566 |
|
|
| 567 |
|
slaveInterp = GetInterp2(interp, objc, objv); |
| 568 |
|
if (slaveInterp == NULL) { |
| 569 |
|
return TCL_ERROR; |
| 570 |
|
} |
| 571 |
|
return SlaveHidden(interp, slaveInterp); |
| 572 |
|
} |
| 573 |
|
case OPT_ISSAFE: { |
| 574 |
|
Tcl_Interp *slaveInterp; |
| 575 |
|
|
| 576 |
|
slaveInterp = GetInterp2(interp, objc, objv); |
| 577 |
|
if (slaveInterp == NULL) { |
| 578 |
|
return TCL_ERROR; |
| 579 |
|
} |
| 580 |
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp)); |
| 581 |
|
return TCL_OK; |
| 582 |
|
} |
| 583 |
|
case OPT_INVOKEHID: { |
| 584 |
|
int i, index, global; |
| 585 |
|
Tcl_Interp *slaveInterp; |
| 586 |
|
static char *hiddenOptions[] = { |
| 587 |
|
"-global", "--", NULL |
| 588 |
|
}; |
| 589 |
|
enum hiddenOption { |
| 590 |
|
OPT_GLOBAL, OPT_LAST |
| 591 |
|
}; |
| 592 |
|
|
| 593 |
|
global = 0; |
| 594 |
|
for (i = 3; i < objc; i++) { |
| 595 |
|
if (Tcl_GetString(objv[i])[0] != '-') { |
| 596 |
|
break; |
| 597 |
|
} |
| 598 |
|
if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, |
| 599 |
|
"option", 0, &index) != TCL_OK) { |
| 600 |
|
return TCL_ERROR; |
| 601 |
|
} |
| 602 |
|
if (index == OPT_GLOBAL) { |
| 603 |
|
global = 1; |
| 604 |
|
} else { |
| 605 |
|
i++; |
| 606 |
|
break; |
| 607 |
|
} |
| 608 |
|
} |
| 609 |
|
if (objc - i < 1) { |
| 610 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 611 |
|
"path ?-global? ?--? cmd ?arg ..?"); |
| 612 |
|
return TCL_ERROR; |
| 613 |
|
} |
| 614 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 615 |
|
if (slaveInterp == (Tcl_Interp *) NULL) { |
| 616 |
|
return TCL_ERROR; |
| 617 |
|
} |
| 618 |
|
return SlaveInvokeHidden(interp, slaveInterp, global, objc - i, |
| 619 |
|
objv + i); |
| 620 |
|
} |
| 621 |
|
case OPT_MARKTRUSTED: { |
| 622 |
|
Tcl_Interp *slaveInterp; |
| 623 |
|
|
| 624 |
|
if (objc != 3) { |
| 625 |
|
Tcl_WrongNumArgs(interp, 2, objv, "path"); |
| 626 |
|
return TCL_ERROR; |
| 627 |
|
} |
| 628 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 629 |
|
if (slaveInterp == NULL) { |
| 630 |
|
return TCL_ERROR; |
| 631 |
|
} |
| 632 |
|
return SlaveMarkTrusted(interp, slaveInterp); |
| 633 |
|
} |
| 634 |
|
case OPT_SLAVES: { |
| 635 |
|
Tcl_Interp *slaveInterp; |
| 636 |
|
InterpInfo *iiPtr; |
| 637 |
|
Tcl_Obj *resultPtr; |
| 638 |
|
Tcl_HashEntry *hPtr; |
| 639 |
|
Tcl_HashSearch hashSearch; |
| 640 |
|
char *string; |
| 641 |
|
|
| 642 |
|
slaveInterp = GetInterp2(interp, objc, objv); |
| 643 |
|
if (slaveInterp == NULL) { |
| 644 |
|
return TCL_ERROR; |
| 645 |
|
} |
| 646 |
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
| 647 |
|
resultPtr = Tcl_GetObjResult(interp); |
| 648 |
|
hPtr = Tcl_FirstHashEntry(&iiPtr->master.slaveTable, &hashSearch); |
| 649 |
|
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&hashSearch)) { |
| 650 |
|
string = Tcl_GetHashKey(&iiPtr->master.slaveTable, hPtr); |
| 651 |
|
Tcl_ListObjAppendElement(NULL, resultPtr, |
| 652 |
|
Tcl_NewStringObj(string, -1)); |
| 653 |
|
} |
| 654 |
|
return TCL_OK; |
| 655 |
|
} |
| 656 |
|
case OPT_SHARE: { |
| 657 |
|
Tcl_Interp *slaveInterp; /* A slave. */ |
| 658 |
|
Tcl_Interp *masterInterp; /* Its master. */ |
| 659 |
|
Tcl_Channel chan; |
| 660 |
|
|
| 661 |
|
if (objc != 5) { |
| 662 |
|
Tcl_WrongNumArgs(interp, 2, objv, "srcPath channelId destPath"); |
| 663 |
|
return TCL_ERROR; |
| 664 |
|
} |
| 665 |
|
masterInterp = GetInterp(interp, objv[2]); |
| 666 |
|
if (masterInterp == NULL) { |
| 667 |
|
return TCL_ERROR; |
| 668 |
|
} |
| 669 |
|
chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]), |
| 670 |
|
NULL); |
| 671 |
|
if (chan == NULL) { |
| 672 |
|
TclTransferResult(masterInterp, TCL_OK, interp); |
| 673 |
|
return TCL_ERROR; |
| 674 |
|
} |
| 675 |
|
slaveInterp = GetInterp(interp, objv[4]); |
| 676 |
|
if (slaveInterp == NULL) { |
| 677 |
|
return TCL_ERROR; |
| 678 |
|
} |
| 679 |
|
Tcl_RegisterChannel(slaveInterp, chan); |
| 680 |
|
return TCL_OK; |
| 681 |
|
} |
| 682 |
|
case OPT_TARGET: { |
| 683 |
|
Tcl_Interp *slaveInterp; |
| 684 |
|
InterpInfo *iiPtr; |
| 685 |
|
Tcl_HashEntry *hPtr; |
| 686 |
|
Alias *aliasPtr; |
| 687 |
|
char *aliasName; |
| 688 |
|
|
| 689 |
|
if (objc != 4) { |
| 690 |
|
Tcl_WrongNumArgs(interp, 2, objv, "path alias"); |
| 691 |
|
return TCL_ERROR; |
| 692 |
|
} |
| 693 |
|
|
| 694 |
|
slaveInterp = GetInterp(interp, objv[2]); |
| 695 |
|
if (slaveInterp == NULL) { |
| 696 |
|
return TCL_ERROR; |
| 697 |
|
} |
| 698 |
|
|
| 699 |
|
aliasName = Tcl_GetString(objv[3]); |
| 700 |
|
|
| 701 |
|
iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; |
| 702 |
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
| 703 |
|
if (hPtr == NULL) { |
| 704 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 705 |
|
"alias \"", aliasName, "\" in path \"", |
| 706 |
|
Tcl_GetString(objv[2]), "\" not found", |
| 707 |
|
(char *) NULL); |
| 708 |
|
return TCL_ERROR; |
| 709 |
|
} |
| 710 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 711 |
|
if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) { |
| 712 |
|
Tcl_ResetResult(interp); |
| 713 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 714 |
|
"target interpreter for alias \"", aliasName, |
| 715 |
|
"\" in path \"", Tcl_GetString(objv[2]), |
| 716 |
|
"\" is not my descendant", (char *) NULL); |
| 717 |
|
return TCL_ERROR; |
| 718 |
|
} |
| 719 |
|
return TCL_OK; |
| 720 |
|
} |
| 721 |
|
case OPT_TRANSFER: { |
| 722 |
|
Tcl_Interp *slaveInterp; /* A slave. */ |
| 723 |
|
Tcl_Interp *masterInterp; /* Its master. */ |
| 724 |
|
Tcl_Channel chan; |
| 725 |
|
|
| 726 |
|
if (objc != 5) { |
| 727 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 728 |
|
"srcPath channelId destPath"); |
| 729 |
|
return TCL_ERROR; |
| 730 |
|
} |
| 731 |
|
masterInterp = GetInterp(interp, objv[2]); |
| 732 |
|
if (masterInterp == NULL) { |
| 733 |
|
return TCL_ERROR; |
| 734 |
|
} |
| 735 |
|
chan = Tcl_GetChannel(masterInterp, Tcl_GetString(objv[3]), NULL); |
| 736 |
|
if (chan == NULL) { |
| 737 |
|
TclTransferResult(masterInterp, TCL_OK, interp); |
| 738 |
|
return TCL_ERROR; |
| 739 |
|
} |
| 740 |
|
slaveInterp = GetInterp(interp, objv[4]); |
| 741 |
|
if (slaveInterp == NULL) { |
| 742 |
|
return TCL_ERROR; |
| 743 |
|
} |
| 744 |
|
Tcl_RegisterChannel(slaveInterp, chan); |
| 745 |
|
if (Tcl_UnregisterChannel(masterInterp, chan) != TCL_OK) { |
| 746 |
|
TclTransferResult(masterInterp, TCL_OK, interp); |
| 747 |
|
return TCL_ERROR; |
| 748 |
|
} |
| 749 |
|
return TCL_OK; |
| 750 |
|
} |
| 751 |
|
} |
| 752 |
|
return TCL_OK; |
| 753 |
|
} |
| 754 |
|
|
| 755 |
|
/* |
| 756 |
|
*--------------------------------------------------------------------------- |
| 757 |
|
* |
| 758 |
|
* GetInterp2 -- |
| 759 |
|
* |
| 760 |
|
* Helper function for Tcl_InterpObjCmd() to convert the interp name |
| 761 |
|
* potentially specified on the command line to an Tcl_Interp. |
| 762 |
|
* |
| 763 |
|
* Results: |
| 764 |
|
* The return value is the interp specified on the command line, |
| 765 |
|
* or the interp argument itself if no interp was specified on the |
| 766 |
|
* command line. If the interp could not be found or the wrong |
| 767 |
|
* number of arguments was specified on the command line, the return |
| 768 |
|
* value is NULL and an error message is left in the interp's result. |
| 769 |
|
* |
| 770 |
|
* Side effects: |
| 771 |
|
* None. |
| 772 |
|
* |
| 773 |
|
*--------------------------------------------------------------------------- |
| 774 |
|
*/ |
| 775 |
|
|
| 776 |
|
static Tcl_Interp * |
| 777 |
|
GetInterp2(interp, objc, objv) |
| 778 |
|
Tcl_Interp *interp; /* Default interp if no interp was specified |
| 779 |
|
* on the command line. */ |
| 780 |
|
int objc; /* Number of arguments. */ |
| 781 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 782 |
|
{ |
| 783 |
|
if (objc == 2) { |
| 784 |
|
return interp; |
| 785 |
|
} else if (objc == 3) { |
| 786 |
|
return GetInterp(interp, objv[2]); |
| 787 |
|
} else { |
| 788 |
|
Tcl_WrongNumArgs(interp, 2, objv, "?path?"); |
| 789 |
|
return NULL; |
| 790 |
|
} |
| 791 |
|
} |
| 792 |
|
|
| 793 |
|
/* |
| 794 |
|
*---------------------------------------------------------------------- |
| 795 |
|
* |
| 796 |
|
* Tcl_CreateAlias -- |
| 797 |
|
* |
| 798 |
|
* Creates an alias between two interpreters. |
| 799 |
|
* |
| 800 |
|
* Results: |
| 801 |
|
* A standard Tcl result. |
| 802 |
|
* |
| 803 |
|
* Side effects: |
| 804 |
|
* Creates a new alias, manipulates the result field of slaveInterp. |
| 805 |
|
* |
| 806 |
|
*---------------------------------------------------------------------- |
| 807 |
|
*/ |
| 808 |
|
|
| 809 |
|
int |
| 810 |
|
Tcl_CreateAlias(slaveInterp, slaveCmd, targetInterp, targetCmd, argc, argv) |
| 811 |
|
Tcl_Interp *slaveInterp; /* Interpreter for source command. */ |
| 812 |
|
char *slaveCmd; /* Command to install in slave. */ |
| 813 |
|
Tcl_Interp *targetInterp; /* Interpreter for target command. */ |
| 814 |
|
char *targetCmd; /* Name of target command. */ |
| 815 |
|
int argc; /* How many additional arguments? */ |
| 816 |
|
char **argv; /* These are the additional args. */ |
| 817 |
|
{ |
| 818 |
|
Tcl_Obj *slaveObjPtr, *targetObjPtr; |
| 819 |
|
Tcl_Obj **objv; |
| 820 |
|
int i; |
| 821 |
|
int result; |
| 822 |
|
|
| 823 |
|
objv = (Tcl_Obj **) ckalloc((unsigned) sizeof(Tcl_Obj *) * argc); |
| 824 |
|
for (i = 0; i < argc; i++) { |
| 825 |
|
objv[i] = Tcl_NewStringObj(argv[i], -1); |
| 826 |
|
Tcl_IncrRefCount(objv[i]); |
| 827 |
|
} |
| 828 |
|
|
| 829 |
|
slaveObjPtr = Tcl_NewStringObj(slaveCmd, -1); |
| 830 |
|
Tcl_IncrRefCount(slaveObjPtr); |
| 831 |
|
|
| 832 |
|
targetObjPtr = Tcl_NewStringObj(targetCmd, -1); |
| 833 |
|
Tcl_IncrRefCount(targetObjPtr); |
| 834 |
|
|
| 835 |
|
result = AliasCreate(slaveInterp, slaveInterp, targetInterp, slaveObjPtr, |
| 836 |
|
targetObjPtr, argc, objv); |
| 837 |
|
|
| 838 |
|
for (i = 0; i < argc; i++) { |
| 839 |
|
Tcl_DecrRefCount(objv[i]); |
| 840 |
|
} |
| 841 |
|
ckfree((char *) objv); |
| 842 |
|
Tcl_DecrRefCount(targetObjPtr); |
| 843 |
|
Tcl_DecrRefCount(slaveObjPtr); |
| 844 |
|
|
| 845 |
|
return result; |
| 846 |
|
} |
| 847 |
|
|
| 848 |
|
/* |
| 849 |
|
*---------------------------------------------------------------------- |
| 850 |
|
* |
| 851 |
|
* Tcl_CreateAliasObj -- |
| 852 |
|
* |
| 853 |
|
* Object version: Creates an alias between two interpreters. |
| 854 |
|
* |
| 855 |
|
* Results: |
| 856 |
|
* A standard Tcl result. |
| 857 |
|
* |
| 858 |
|
* Side effects: |
| 859 |
|
* Creates a new alias. |
| 860 |
|
* |
| 861 |
|
*---------------------------------------------------------------------- |
| 862 |
|
*/ |
| 863 |
|
|
| 864 |
|
int |
| 865 |
|
Tcl_CreateAliasObj(slaveInterp, slaveCmd, targetInterp, targetCmd, objc, objv) |
| 866 |
|
Tcl_Interp *slaveInterp; /* Interpreter for source command. */ |
| 867 |
|
char *slaveCmd; /* Command to install in slave. */ |
| 868 |
|
Tcl_Interp *targetInterp; /* Interpreter for target command. */ |
| 869 |
|
char *targetCmd; /* Name of target command. */ |
| 870 |
|
int objc; /* How many additional arguments? */ |
| 871 |
|
Tcl_Obj *CONST objv[]; /* Argument vector. */ |
| 872 |
|
{ |
| 873 |
|
Tcl_Obj *slaveObjPtr, *targetObjPtr; |
| 874 |
|
int result; |
| 875 |
|
|
| 876 |
|
slaveObjPtr = Tcl_NewStringObj(slaveCmd, -1); |
| 877 |
|
Tcl_IncrRefCount(slaveObjPtr); |
| 878 |
|
|
| 879 |
|
targetObjPtr = Tcl_NewStringObj(targetCmd, -1); |
| 880 |
|
Tcl_IncrRefCount(targetObjPtr); |
| 881 |
|
|
| 882 |
|
result = AliasCreate(slaveInterp, slaveInterp, targetInterp, slaveObjPtr, |
| 883 |
|
targetObjPtr, objc, objv); |
| 884 |
|
|
| 885 |
|
Tcl_DecrRefCount(slaveObjPtr); |
| 886 |
|
Tcl_DecrRefCount(targetObjPtr); |
| 887 |
|
return result; |
| 888 |
|
} |
| 889 |
|
|
| 890 |
|
/* |
| 891 |
|
*---------------------------------------------------------------------- |
| 892 |
|
* |
| 893 |
|
* Tcl_GetAlias -- |
| 894 |
|
* |
| 895 |
|
* Gets information about an alias. |
| 896 |
|
* |
| 897 |
|
* Results: |
| 898 |
|
* A standard Tcl result. |
| 899 |
|
* |
| 900 |
|
* Side effects: |
| 901 |
|
* None. |
| 902 |
|
* |
| 903 |
|
*---------------------------------------------------------------------- |
| 904 |
|
*/ |
| 905 |
|
|
| 906 |
|
int |
| 907 |
|
Tcl_GetAlias(interp, aliasName, targetInterpPtr, targetNamePtr, argcPtr, |
| 908 |
|
argvPtr) |
| 909 |
|
Tcl_Interp *interp; /* Interp to start search from. */ |
| 910 |
|
char *aliasName; /* Name of alias to find. */ |
| 911 |
|
Tcl_Interp **targetInterpPtr; /* (Return) target interpreter. */ |
| 912 |
|
char **targetNamePtr; /* (Return) name of target command. */ |
| 913 |
|
int *argcPtr; /* (Return) count of addnl args. */ |
| 914 |
|
char ***argvPtr; /* (Return) additional arguments. */ |
| 915 |
|
{ |
| 916 |
|
InterpInfo *iiPtr; |
| 917 |
|
Tcl_HashEntry *hPtr; |
| 918 |
|
Alias *aliasPtr; |
| 919 |
|
int i, objc; |
| 920 |
|
Tcl_Obj **objv; |
| 921 |
|
|
| 922 |
|
iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
| 923 |
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
| 924 |
|
if (hPtr == NULL) { |
| 925 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 926 |
|
"alias \"", aliasName, "\" not found", (char *) NULL); |
| 927 |
|
return TCL_ERROR; |
| 928 |
|
} |
| 929 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 930 |
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &objc, &objv); |
| 931 |
|
|
| 932 |
|
if (targetInterpPtr != NULL) { |
| 933 |
|
*targetInterpPtr = aliasPtr->targetInterp; |
| 934 |
|
} |
| 935 |
|
if (targetNamePtr != NULL) { |
| 936 |
|
*targetNamePtr = Tcl_GetString(objv[0]); |
| 937 |
|
} |
| 938 |
|
if (argcPtr != NULL) { |
| 939 |
|
*argcPtr = objc - 1; |
| 940 |
|
} |
| 941 |
|
if (argvPtr != NULL) { |
| 942 |
|
*argvPtr = (char **) ckalloc((unsigned) sizeof(char *) * (objc - 1)); |
| 943 |
|
for (i = 1; i < objc; i++) { |
| 944 |
|
*argvPtr[i - 1] = Tcl_GetString(objv[i]); |
| 945 |
|
} |
| 946 |
|
} |
| 947 |
|
return TCL_OK; |
| 948 |
|
} |
| 949 |
|
|
| 950 |
|
/* |
| 951 |
|
*---------------------------------------------------------------------- |
| 952 |
|
* |
| 953 |
|
* Tcl_ObjGetAlias -- |
| 954 |
|
* |
| 955 |
|
* Object version: Gets information about an alias. |
| 956 |
|
* |
| 957 |
|
* Results: |
| 958 |
|
* A standard Tcl result. |
| 959 |
|
* |
| 960 |
|
* Side effects: |
| 961 |
|
* None. |
| 962 |
|
* |
| 963 |
|
*---------------------------------------------------------------------- |
| 964 |
|
*/ |
| 965 |
|
|
| 966 |
|
int |
| 967 |
|
Tcl_GetAliasObj(interp, aliasName, targetInterpPtr, targetNamePtr, objcPtr, |
| 968 |
|
objvPtr) |
| 969 |
|
Tcl_Interp *interp; /* Interp to start search from. */ |
| 970 |
|
char *aliasName; /* Name of alias to find. */ |
| 971 |
|
Tcl_Interp **targetInterpPtr; /* (Return) target interpreter. */ |
| 972 |
|
char **targetNamePtr; /* (Return) name of target command. */ |
| 973 |
|
int *objcPtr; /* (Return) count of addnl args. */ |
| 974 |
|
Tcl_Obj ***objvPtr; /* (Return) additional args. */ |
| 975 |
|
{ |
| 976 |
|
InterpInfo *iiPtr; |
| 977 |
|
Tcl_HashEntry *hPtr; |
| 978 |
|
Alias *aliasPtr; |
| 979 |
|
int objc; |
| 980 |
|
Tcl_Obj **objv; |
| 981 |
|
|
| 982 |
|
iiPtr = (InterpInfo *) ((Interp *) interp)->interpInfo; |
| 983 |
|
hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); |
| 984 |
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
| 985 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 986 |
|
"alias \"", aliasName, "\" not found", (char *) NULL); |
| 987 |
|
return TCL_ERROR; |
| 988 |
|
} |
| 989 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 990 |
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &objc, &objv); |
| 991 |
|
|
| 992 |
|
if (targetInterpPtr != (Tcl_Interp **) NULL) { |
| 993 |
|
*targetInterpPtr = aliasPtr->targetInterp; |
| 994 |
|
} |
| 995 |
|
if (targetNamePtr != (char **) NULL) { |
| 996 |
|
*targetNamePtr = Tcl_GetString(objv[0]); |
| 997 |
|
} |
| 998 |
|
if (objcPtr != (int *) NULL) { |
| 999 |
|
*objcPtr = objc - 1; |
| 1000 |
|
} |
| 1001 |
|
if (objvPtr != (Tcl_Obj ***) NULL) { |
| 1002 |
|
*objvPtr = objv + 1; |
| 1003 |
|
} |
| 1004 |
|
return TCL_OK; |
| 1005 |
|
} |
| 1006 |
|
|
| 1007 |
|
/* |
| 1008 |
|
*---------------------------------------------------------------------- |
| 1009 |
|
* |
| 1010 |
|
* TclPreventAliasLoop -- |
| 1011 |
|
* |
| 1012 |
|
* When defining an alias or renaming a command, prevent an alias |
| 1013 |
|
* loop from being formed. |
| 1014 |
|
* |
| 1015 |
|
* Results: |
| 1016 |
|
* A standard Tcl object result. |
| 1017 |
|
* |
| 1018 |
|
* Side effects: |
| 1019 |
|
* If TCL_ERROR is returned, the function also stores an error message |
| 1020 |
|
* in the interpreter's result object. |
| 1021 |
|
* |
| 1022 |
|
* NOTE: |
| 1023 |
|
* This function is public internal (instead of being static to |
| 1024 |
|
* this file) because it is also used from TclRenameCommand. |
| 1025 |
|
* |
| 1026 |
|
*---------------------------------------------------------------------- |
| 1027 |
|
*/ |
| 1028 |
|
|
| 1029 |
|
int |
| 1030 |
|
TclPreventAliasLoop(interp, cmdInterp, cmd) |
| 1031 |
|
Tcl_Interp *interp; /* Interp in which to report errors. */ |
| 1032 |
|
Tcl_Interp *cmdInterp; /* Interp in which the command is |
| 1033 |
|
* being defined. */ |
| 1034 |
|
Tcl_Command cmd; /* Tcl command we are attempting |
| 1035 |
|
* to define. */ |
| 1036 |
|
{ |
| 1037 |
|
Command *cmdPtr = (Command *) cmd; |
| 1038 |
|
Alias *aliasPtr, *nextAliasPtr; |
| 1039 |
|
Tcl_Command aliasCmd; |
| 1040 |
|
Command *aliasCmdPtr; |
| 1041 |
|
|
| 1042 |
|
/* |
| 1043 |
|
* If we are not creating or renaming an alias, then it is |
| 1044 |
|
* always OK to create or rename the command. |
| 1045 |
|
*/ |
| 1046 |
|
|
| 1047 |
|
if (cmdPtr->objProc != AliasObjCmd) { |
| 1048 |
|
return TCL_OK; |
| 1049 |
|
} |
| 1050 |
|
|
| 1051 |
|
/* |
| 1052 |
|
* OK, we are dealing with an alias, so traverse the chain of aliases. |
| 1053 |
|
* If we encounter the alias we are defining (or renaming to) any in |
| 1054 |
|
* the chain then we have a loop. |
| 1055 |
|
*/ |
| 1056 |
|
|
| 1057 |
|
aliasPtr = (Alias *) cmdPtr->objClientData; |
| 1058 |
|
nextAliasPtr = aliasPtr; |
| 1059 |
|
while (1) { |
| 1060 |
|
int objc; |
| 1061 |
|
Tcl_Obj **objv; |
| 1062 |
|
|
| 1063 |
|
/* |
| 1064 |
|
* If the target of the next alias in the chain is the same as |
| 1065 |
|
* the source alias, we have a loop. |
| 1066 |
|
*/ |
| 1067 |
|
|
| 1068 |
|
Tcl_ListObjGetElements(NULL, nextAliasPtr->prefixPtr, &objc, &objv); |
| 1069 |
|
aliasCmd = Tcl_FindCommand(nextAliasPtr->targetInterp, |
| 1070 |
|
Tcl_GetString(objv[0]), |
| 1071 |
|
Tcl_GetGlobalNamespace(nextAliasPtr->targetInterp), |
| 1072 |
|
/*flags*/ 0); |
| 1073 |
|
if (aliasCmd == (Tcl_Command) NULL) { |
| 1074 |
|
return TCL_OK; |
| 1075 |
|
} |
| 1076 |
|
aliasCmdPtr = (Command *) aliasCmd; |
| 1077 |
|
if (aliasCmdPtr == cmdPtr) { |
| 1078 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1079 |
|
"cannot define or rename alias \"", |
| 1080 |
|
Tcl_GetString(aliasPtr->namePtr), |
| 1081 |
|
"\": would create a loop", (char *) NULL); |
| 1082 |
|
return TCL_ERROR; |
| 1083 |
|
} |
| 1084 |
|
|
| 1085 |
|
/* |
| 1086 |
|
* Otherwise, follow the chain one step further. See if the target |
| 1087 |
|
* command is an alias - if so, follow the loop to its target |
| 1088 |
|
* command. Otherwise we do not have a loop. |
| 1089 |
|
*/ |
| 1090 |
|
|
| 1091 |
|
if (aliasCmdPtr->objProc != AliasObjCmd) { |
| 1092 |
|
return TCL_OK; |
| 1093 |
|
} |
| 1094 |
|
nextAliasPtr = (Alias *) aliasCmdPtr->objClientData; |
| 1095 |
|
} |
| 1096 |
|
|
| 1097 |
|
/* NOTREACHED */ |
| 1098 |
|
} |
| 1099 |
|
|
| 1100 |
|
/* |
| 1101 |
|
*---------------------------------------------------------------------- |
| 1102 |
|
* |
| 1103 |
|
* AliasCreate -- |
| 1104 |
|
* |
| 1105 |
|
* Helper function to do the work to actually create an alias. |
| 1106 |
|
* |
| 1107 |
|
* Results: |
| 1108 |
|
* A standard Tcl result. |
| 1109 |
|
* |
| 1110 |
|
* Side effects: |
| 1111 |
|
* An alias command is created and entered into the alias table |
| 1112 |
|
* for the slave interpreter. |
| 1113 |
|
* |
| 1114 |
|
*---------------------------------------------------------------------- |
| 1115 |
|
*/ |
| 1116 |
|
|
| 1117 |
|
static int |
| 1118 |
|
AliasCreate(interp, slaveInterp, masterInterp, namePtr, targetNamePtr, |
| 1119 |
|
objc, objv) |
| 1120 |
|
Tcl_Interp *interp; /* Interp for error reporting. */ |
| 1121 |
|
Tcl_Interp *slaveInterp; /* Interp where alias cmd will live or from |
| 1122 |
|
* which alias will be deleted. */ |
| 1123 |
|
Tcl_Interp *masterInterp; /* Interp in which target command will be |
| 1124 |
|
* invoked. */ |
| 1125 |
|
Tcl_Obj *namePtr; /* Name of alias cmd. */ |
| 1126 |
|
Tcl_Obj *targetNamePtr; /* Name of target cmd. */ |
| 1127 |
|
int objc; /* Additional arguments to store */ |
| 1128 |
|
Tcl_Obj *CONST objv[]; /* with alias. */ |
| 1129 |
|
{ |
| 1130 |
|
Alias *aliasPtr; |
| 1131 |
|
Tcl_HashEntry *hPtr; |
| 1132 |
|
int new; |
| 1133 |
|
Target *targetPtr; |
| 1134 |
|
Slave *slavePtr; |
| 1135 |
|
Master *masterPtr; |
| 1136 |
|
|
| 1137 |
|
aliasPtr = (Alias *) ckalloc((unsigned) sizeof(Alias)); |
| 1138 |
|
aliasPtr->namePtr = namePtr; |
| 1139 |
|
Tcl_IncrRefCount(aliasPtr->namePtr); |
| 1140 |
|
aliasPtr->targetInterp = masterInterp; |
| 1141 |
|
aliasPtr->prefixPtr = Tcl_NewListObj(1, &targetNamePtr); |
| 1142 |
|
Tcl_ListObjReplace(NULL, aliasPtr->prefixPtr, 1, 0, objc, objv); |
| 1143 |
|
Tcl_IncrRefCount(aliasPtr->prefixPtr); |
| 1144 |
|
|
| 1145 |
|
aliasPtr->slaveCmd = Tcl_CreateObjCommand(slaveInterp, |
| 1146 |
|
Tcl_GetString(namePtr), AliasObjCmd, (ClientData) aliasPtr, |
| 1147 |
|
AliasObjCmdDeleteProc); |
| 1148 |
|
|
| 1149 |
|
if (TclPreventAliasLoop(interp, slaveInterp, aliasPtr->slaveCmd) != TCL_OK) { |
| 1150 |
|
/* |
| 1151 |
|
* Found an alias loop! The last call to Tcl_CreateObjCommand made |
| 1152 |
|
* the alias point to itself. Delete the command and its alias |
| 1153 |
|
* record. Be careful to wipe out its client data first, so the |
| 1154 |
|
* command doesn't try to delete itself. |
| 1155 |
|
*/ |
| 1156 |
|
|
| 1157 |
|
Command *cmdPtr; |
| 1158 |
|
|
| 1159 |
|
Tcl_DecrRefCount(aliasPtr->namePtr); |
| 1160 |
|
Tcl_DecrRefCount(aliasPtr->prefixPtr); |
| 1161 |
|
|
| 1162 |
|
cmdPtr = (Command *) aliasPtr->slaveCmd; |
| 1163 |
|
cmdPtr->clientData = NULL; |
| 1164 |
|
cmdPtr->deleteProc = NULL; |
| 1165 |
|
cmdPtr->deleteData = NULL; |
| 1166 |
|
Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd); |
| 1167 |
|
|
| 1168 |
|
ckfree((char *) aliasPtr); |
| 1169 |
|
|
| 1170 |
|
/* |
| 1171 |
|
* The result was already set by TclPreventAliasLoop. |
| 1172 |
|
*/ |
| 1173 |
|
|
| 1174 |
|
return TCL_ERROR; |
| 1175 |
|
} |
| 1176 |
|
|
| 1177 |
|
/* |
| 1178 |
|
* Make an entry in the alias table. If it already exists delete |
| 1179 |
|
* the alias command. Then retry. |
| 1180 |
|
*/ |
| 1181 |
|
|
| 1182 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1183 |
|
while (1) { |
| 1184 |
|
Alias *oldAliasPtr; |
| 1185 |
|
char *string; |
| 1186 |
|
|
| 1187 |
|
string = Tcl_GetString(namePtr); |
| 1188 |
|
hPtr = Tcl_CreateHashEntry(&slavePtr->aliasTable, string, &new); |
| 1189 |
|
if (new != 0) { |
| 1190 |
|
break; |
| 1191 |
|
} |
| 1192 |
|
|
| 1193 |
|
oldAliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 1194 |
|
Tcl_DeleteCommandFromToken(slaveInterp, oldAliasPtr->slaveCmd); |
| 1195 |
|
} |
| 1196 |
|
|
| 1197 |
|
aliasPtr->aliasEntryPtr = hPtr; |
| 1198 |
|
Tcl_SetHashValue(hPtr, (ClientData) aliasPtr); |
| 1199 |
|
|
| 1200 |
|
/* |
| 1201 |
|
* Create the new command. We must do it after deleting any old command, |
| 1202 |
|
* because the alias may be pointing at a renamed alias, as in: |
| 1203 |
|
* |
| 1204 |
|
* interp alias {} foo {} bar # Create an alias "foo" |
| 1205 |
|
* rename foo zop # Now rename the alias |
| 1206 |
|
* interp alias {} foo {} zop # Now recreate "foo"... |
| 1207 |
|
*/ |
| 1208 |
|
|
| 1209 |
|
targetPtr = (Target *) ckalloc((unsigned) sizeof(Target)); |
| 1210 |
|
targetPtr->slaveCmd = aliasPtr->slaveCmd; |
| 1211 |
|
targetPtr->slaveInterp = slaveInterp; |
| 1212 |
|
|
| 1213 |
|
Tcl_MutexLock(&cntMutex); |
| 1214 |
|
masterPtr = &((InterpInfo *) ((Interp *) masterInterp)->interpInfo)->master; |
| 1215 |
|
do { |
| 1216 |
|
hPtr = Tcl_CreateHashEntry(&masterPtr->targetTable, |
| 1217 |
|
(char *) aliasCounter, &new); |
| 1218 |
|
aliasCounter++; |
| 1219 |
|
} while (new == 0); |
| 1220 |
|
Tcl_MutexUnlock(&cntMutex); |
| 1221 |
|
|
| 1222 |
|
Tcl_SetHashValue(hPtr, (ClientData) targetPtr); |
| 1223 |
|
aliasPtr->targetEntryPtr = hPtr; |
| 1224 |
|
|
| 1225 |
|
Tcl_SetObjResult(interp, namePtr); |
| 1226 |
|
return TCL_OK; |
| 1227 |
|
} |
| 1228 |
|
|
| 1229 |
|
/* |
| 1230 |
|
*---------------------------------------------------------------------- |
| 1231 |
|
* |
| 1232 |
|
* AliasDelete -- |
| 1233 |
|
* |
| 1234 |
|
* Deletes the given alias from the slave interpreter given. |
| 1235 |
|
* |
| 1236 |
|
* Results: |
| 1237 |
|
* A standard Tcl result. |
| 1238 |
|
* |
| 1239 |
|
* Side effects: |
| 1240 |
|
* Deletes the alias from the slave interpreter. |
| 1241 |
|
* |
| 1242 |
|
*---------------------------------------------------------------------- |
| 1243 |
|
*/ |
| 1244 |
|
|
| 1245 |
|
static int |
| 1246 |
|
AliasDelete(interp, slaveInterp, namePtr) |
| 1247 |
|
Tcl_Interp *interp; /* Interpreter for result & errors. */ |
| 1248 |
|
Tcl_Interp *slaveInterp; /* Interpreter containing alias. */ |
| 1249 |
|
Tcl_Obj *namePtr; /* Name of alias to describe. */ |
| 1250 |
|
{ |
| 1251 |
|
Slave *slavePtr; |
| 1252 |
|
Alias *aliasPtr; |
| 1253 |
|
Tcl_HashEntry *hPtr; |
| 1254 |
|
|
| 1255 |
|
/* |
| 1256 |
|
* If the alias has been renamed in the slave, the master can still use |
| 1257 |
|
* the original name (with which it was created) to find the alias to |
| 1258 |
|
* delete it. |
| 1259 |
|
*/ |
| 1260 |
|
|
| 1261 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1262 |
|
hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr)); |
| 1263 |
|
if (hPtr == NULL) { |
| 1264 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "alias \"", |
| 1265 |
|
Tcl_GetString(namePtr), "\" not found", NULL); |
| 1266 |
|
return TCL_ERROR; |
| 1267 |
|
} |
| 1268 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 1269 |
|
Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd); |
| 1270 |
|
return TCL_OK; |
| 1271 |
|
} |
| 1272 |
|
|
| 1273 |
|
/* |
| 1274 |
|
*---------------------------------------------------------------------- |
| 1275 |
|
* |
| 1276 |
|
* AliasDescribe -- |
| 1277 |
|
* |
| 1278 |
|
* Sets the interpreter's result object to a Tcl list describing |
| 1279 |
|
* the given alias in the given interpreter: its target command |
| 1280 |
|
* and the additional arguments to prepend to any invocation |
| 1281 |
|
* of the alias. |
| 1282 |
|
* |
| 1283 |
|
* Results: |
| 1284 |
|
* A standard Tcl result. |
| 1285 |
|
* |
| 1286 |
|
* Side effects: |
| 1287 |
|
* None. |
| 1288 |
|
* |
| 1289 |
|
*---------------------------------------------------------------------- |
| 1290 |
|
*/ |
| 1291 |
|
|
| 1292 |
|
static int |
| 1293 |
|
AliasDescribe(interp, slaveInterp, namePtr) |
| 1294 |
|
Tcl_Interp *interp; /* Interpreter for result & errors. */ |
| 1295 |
|
Tcl_Interp *slaveInterp; /* Interpreter containing alias. */ |
| 1296 |
|
Tcl_Obj *namePtr; /* Name of alias to describe. */ |
| 1297 |
|
{ |
| 1298 |
|
Slave *slavePtr; |
| 1299 |
|
Tcl_HashEntry *hPtr; |
| 1300 |
|
Alias *aliasPtr; |
| 1301 |
|
|
| 1302 |
|
/* |
| 1303 |
|
* If the alias has been renamed in the slave, the master can still use |
| 1304 |
|
* the original name (with which it was created) to find the alias to |
| 1305 |
|
* describe it. |
| 1306 |
|
*/ |
| 1307 |
|
|
| 1308 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1309 |
|
hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, Tcl_GetString(namePtr)); |
| 1310 |
|
if (hPtr == NULL) { |
| 1311 |
|
return TCL_OK; |
| 1312 |
|
} |
| 1313 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(hPtr); |
| 1314 |
|
Tcl_SetObjResult(interp, aliasPtr->prefixPtr); |
| 1315 |
|
return TCL_OK; |
| 1316 |
|
} |
| 1317 |
|
|
| 1318 |
|
/* |
| 1319 |
|
*---------------------------------------------------------------------- |
| 1320 |
|
* |
| 1321 |
|
* AliasList -- |
| 1322 |
|
* |
| 1323 |
|
* Computes a list of aliases defined in a slave interpreter. |
| 1324 |
|
* |
| 1325 |
|
* Results: |
| 1326 |
|
* A standard Tcl result. |
| 1327 |
|
* |
| 1328 |
|
* Side effects: |
| 1329 |
|
* None. |
| 1330 |
|
* |
| 1331 |
|
*---------------------------------------------------------------------- |
| 1332 |
|
*/ |
| 1333 |
|
|
| 1334 |
|
static int |
| 1335 |
|
AliasList(interp, slaveInterp) |
| 1336 |
|
Tcl_Interp *interp; /* Interp for data return. */ |
| 1337 |
|
Tcl_Interp *slaveInterp; /* Interp whose aliases to compute. */ |
| 1338 |
|
{ |
| 1339 |
|
Tcl_HashEntry *entryPtr; |
| 1340 |
|
Tcl_HashSearch hashSearch; |
| 1341 |
|
Tcl_Obj *resultPtr; |
| 1342 |
|
Alias *aliasPtr; |
| 1343 |
|
Slave *slavePtr; |
| 1344 |
|
|
| 1345 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1346 |
|
resultPtr = Tcl_GetObjResult(interp); |
| 1347 |
|
|
| 1348 |
|
entryPtr = Tcl_FirstHashEntry(&slavePtr->aliasTable, &hashSearch); |
| 1349 |
|
for ( ; entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&hashSearch)) { |
| 1350 |
|
aliasPtr = (Alias *) Tcl_GetHashValue(entryPtr); |
| 1351 |
|
Tcl_ListObjAppendElement(NULL, resultPtr, aliasPtr->namePtr); |
| 1352 |
|
} |
| 1353 |
|
return TCL_OK; |
| 1354 |
|
} |
| 1355 |
|
|
| 1356 |
|
/* |
| 1357 |
|
*---------------------------------------------------------------------- |
| 1358 |
|
* |
| 1359 |
|
* AliasObjCmd -- |
| 1360 |
|
* |
| 1361 |
|
* This is the procedure that services invocations of aliases in a |
| 1362 |
|
* slave interpreter. One such command exists for each alias. When |
| 1363 |
|
* invoked, this procedure redirects the invocation to the target |
| 1364 |
|
* command in the master interpreter as designated by the Alias |
| 1365 |
|
* record associated with this command. |
| 1366 |
|
* |
| 1367 |
|
* Results: |
| 1368 |
|
* A standard Tcl result. |
| 1369 |
|
* |
| 1370 |
|
* Side effects: |
| 1371 |
|
* Causes forwarding of the invocation; all possible side effects |
| 1372 |
|
* may occur as a result of invoking the command to which the |
| 1373 |
|
* invocation is forwarded. |
| 1374 |
|
* |
| 1375 |
|
*---------------------------------------------------------------------- |
| 1376 |
|
*/ |
| 1377 |
|
|
| 1378 |
|
static int |
| 1379 |
|
AliasObjCmd(clientData, interp, objc, objv) |
| 1380 |
|
ClientData clientData; /* Alias record. */ |
| 1381 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 1382 |
|
int objc; /* Number of arguments. */ |
| 1383 |
|
Tcl_Obj *CONST objv[]; /* Argument vector. */ |
| 1384 |
|
{ |
| 1385 |
|
Tcl_Interp *targetInterp; |
| 1386 |
|
Alias *aliasPtr; |
| 1387 |
|
int result, prefc, cmdc; |
| 1388 |
|
Tcl_Obj *cmdPtr; |
| 1389 |
|
Tcl_Obj **prefv, **cmdv; |
| 1390 |
|
|
| 1391 |
|
aliasPtr = (Alias *) clientData; |
| 1392 |
|
targetInterp = aliasPtr->targetInterp; |
| 1393 |
|
|
| 1394 |
|
Tcl_Preserve((ClientData) targetInterp); |
| 1395 |
|
|
| 1396 |
|
((Interp *) targetInterp)->numLevels++; |
| 1397 |
|
|
| 1398 |
|
Tcl_ResetResult(targetInterp); |
| 1399 |
|
Tcl_AllowExceptions(targetInterp); |
| 1400 |
|
|
| 1401 |
|
/* |
| 1402 |
|
* Append the arguments to the command prefix and invoke the command |
| 1403 |
|
* in the target interp's global namespace. |
| 1404 |
|
*/ |
| 1405 |
|
|
| 1406 |
|
Tcl_ListObjGetElements(NULL, aliasPtr->prefixPtr, &prefc, &prefv); |
| 1407 |
|
cmdPtr = Tcl_NewListObj(prefc, prefv); |
| 1408 |
|
Tcl_ListObjReplace(NULL, cmdPtr, prefc, 0, objc - 1, objv + 1); |
| 1409 |
|
Tcl_ListObjGetElements(NULL, cmdPtr, &cmdc, &cmdv); |
| 1410 |
|
result = TclObjInvoke(targetInterp, cmdc, cmdv, |
| 1411 |
|
TCL_INVOKE_NO_TRACEBACK); |
| 1412 |
|
Tcl_DecrRefCount(cmdPtr); |
| 1413 |
|
|
| 1414 |
|
((Interp *) targetInterp)->numLevels--; |
| 1415 |
|
|
| 1416 |
|
/* |
| 1417 |
|
* Check if we are at the bottom of the stack for the target interpreter. |
| 1418 |
|
* If so, check for special return codes. |
| 1419 |
|
*/ |
| 1420 |
|
|
| 1421 |
|
if (((Interp *) targetInterp)->numLevels == 0) { |
| 1422 |
|
if (result == TCL_RETURN) { |
| 1423 |
|
result = TclUpdateReturnInfo((Interp *) targetInterp); |
| 1424 |
|
} |
| 1425 |
|
if ((result != TCL_OK) && (result != TCL_ERROR)) { |
| 1426 |
|
Tcl_ResetResult(targetInterp); |
| 1427 |
|
if (result == TCL_BREAK) { |
| 1428 |
|
Tcl_SetObjResult(targetInterp, |
| 1429 |
|
Tcl_NewStringObj("invoked \"break\" outside of a loop", |
| 1430 |
|
-1)); |
| 1431 |
|
} else if (result == TCL_CONTINUE) { |
| 1432 |
|
Tcl_SetObjResult(targetInterp, |
| 1433 |
|
Tcl_NewStringObj( |
| 1434 |
|
"invoked \"continue\" outside of a loop", |
| 1435 |
|
-1)); |
| 1436 |
|
} else { |
| 1437 |
|
char buf[32 + TCL_INTEGER_SPACE]; |
| 1438 |
|
|
| 1439 |
|
sprintf(buf, "command returned bad code: %d", result); |
| 1440 |
|
Tcl_SetObjResult(targetInterp, Tcl_NewStringObj(buf, -1)); |
| 1441 |
|
} |
| 1442 |
|
result = TCL_ERROR; |
| 1443 |
|
} |
| 1444 |
|
} |
| 1445 |
|
|
| 1446 |
|
TclTransferResult(targetInterp, result, interp); |
| 1447 |
|
|
| 1448 |
|
Tcl_Release((ClientData) targetInterp); |
| 1449 |
|
return result; |
| 1450 |
|
} |
| 1451 |
|
|
| 1452 |
|
/* |
| 1453 |
|
*---------------------------------------------------------------------- |
| 1454 |
|
* |
| 1455 |
|
* AliasObjCmdDeleteProc -- |
| 1456 |
|
* |
| 1457 |
|
* Is invoked when an alias command is deleted in a slave. Cleans up |
| 1458 |
|
* all storage associated with this alias. |
| 1459 |
|
* |
| 1460 |
|
* Results: |
| 1461 |
|
* None. |
| 1462 |
|
* |
| 1463 |
|
* Side effects: |
| 1464 |
|
* Deletes the alias record and its entry in the alias table for |
| 1465 |
|
* the interpreter. |
| 1466 |
|
* |
| 1467 |
|
*---------------------------------------------------------------------- |
| 1468 |
|
*/ |
| 1469 |
|
|
| 1470 |
|
static void |
| 1471 |
|
AliasObjCmdDeleteProc(clientData) |
| 1472 |
|
ClientData clientData; /* The alias record for this alias. */ |
| 1473 |
|
{ |
| 1474 |
|
Alias *aliasPtr; |
| 1475 |
|
Target *targetPtr; |
| 1476 |
|
|
| 1477 |
|
aliasPtr = (Alias *) clientData; |
| 1478 |
|
|
| 1479 |
|
Tcl_DecrRefCount(aliasPtr->namePtr); |
| 1480 |
|
Tcl_DecrRefCount(aliasPtr->prefixPtr); |
| 1481 |
|
Tcl_DeleteHashEntry(aliasPtr->aliasEntryPtr); |
| 1482 |
|
|
| 1483 |
|
targetPtr = (Target *) Tcl_GetHashValue(aliasPtr->targetEntryPtr); |
| 1484 |
|
ckfree((char *) targetPtr); |
| 1485 |
|
Tcl_DeleteHashEntry(aliasPtr->targetEntryPtr); |
| 1486 |
|
|
| 1487 |
|
ckfree((char *) aliasPtr); |
| 1488 |
|
} |
| 1489 |
|
|
| 1490 |
|
/* |
| 1491 |
|
*---------------------------------------------------------------------- |
| 1492 |
|
* |
| 1493 |
|
* Tcl_CreateSlave -- |
| 1494 |
|
* |
| 1495 |
|
* Creates a slave interpreter. The slavePath argument denotes the |
| 1496 |
|
* name of the new slave relative to the current interpreter; the |
| 1497 |
|
* slave is a direct descendant of the one-before-last component of |
| 1498 |
|
* the path, e.g. it is a descendant of the current interpreter if |
| 1499 |
|
* the slavePath argument contains only one component. Optionally makes |
| 1500 |
|
* the slave interpreter safe. |
| 1501 |
|
* |
| 1502 |
|
* Results: |
| 1503 |
|
* Returns the interpreter structure created, or NULL if an error |
| 1504 |
|
* occurred. |
| 1505 |
|
* |
| 1506 |
|
* Side effects: |
| 1507 |
|
* Creates a new interpreter and a new interpreter object command in |
| 1508 |
|
* the interpreter indicated by the slavePath argument. |
| 1509 |
|
* |
| 1510 |
|
*---------------------------------------------------------------------- |
| 1511 |
|
*/ |
| 1512 |
|
|
| 1513 |
|
Tcl_Interp * |
| 1514 |
|
Tcl_CreateSlave(interp, slavePath, isSafe) |
| 1515 |
|
Tcl_Interp *interp; /* Interpreter to start search at. */ |
| 1516 |
|
char *slavePath; /* Name of slave to create. */ |
| 1517 |
|
int isSafe; /* Should new slave be "safe" ? */ |
| 1518 |
|
{ |
| 1519 |
|
Tcl_Obj *pathPtr; |
| 1520 |
|
Tcl_Interp *slaveInterp; |
| 1521 |
|
|
| 1522 |
|
pathPtr = Tcl_NewStringObj(slavePath, -1); |
| 1523 |
|
slaveInterp = SlaveCreate(interp, pathPtr, isSafe); |
| 1524 |
|
Tcl_DecrRefCount(pathPtr); |
| 1525 |
|
|
| 1526 |
|
return slaveInterp; |
| 1527 |
|
} |
| 1528 |
|
|
| 1529 |
|
/* |
| 1530 |
|
*---------------------------------------------------------------------- |
| 1531 |
|
* |
| 1532 |
|
* Tcl_GetSlave -- |
| 1533 |
|
* |
| 1534 |
|
* Finds a slave interpreter by its path name. |
| 1535 |
|
* |
| 1536 |
|
* Results: |
| 1537 |
|
* Returns a Tcl_Interp * for the named interpreter or NULL if not |
| 1538 |
|
* found. |
| 1539 |
|
* |
| 1540 |
|
* Side effects: |
| 1541 |
|
* None. |
| 1542 |
|
* |
| 1543 |
|
*---------------------------------------------------------------------- |
| 1544 |
|
*/ |
| 1545 |
|
|
| 1546 |
|
Tcl_Interp * |
| 1547 |
|
Tcl_GetSlave(interp, slavePath) |
| 1548 |
|
Tcl_Interp *interp; /* Interpreter to start search from. */ |
| 1549 |
|
char *slavePath; /* Path of slave to find. */ |
| 1550 |
|
{ |
| 1551 |
|
Tcl_Obj *pathPtr; |
| 1552 |
|
Tcl_Interp *slaveInterp; |
| 1553 |
|
|
| 1554 |
|
pathPtr = Tcl_NewStringObj(slavePath, -1); |
| 1555 |
|
slaveInterp = GetInterp(interp, pathPtr); |
| 1556 |
|
Tcl_DecrRefCount(pathPtr); |
| 1557 |
|
|
| 1558 |
|
return slaveInterp; |
| 1559 |
|
} |
| 1560 |
|
|
| 1561 |
|
/* |
| 1562 |
|
*---------------------------------------------------------------------- |
| 1563 |
|
* |
| 1564 |
|
* Tcl_GetMaster -- |
| 1565 |
|
* |
| 1566 |
|
* Finds the master interpreter of a slave interpreter. |
| 1567 |
|
* |
| 1568 |
|
* Results: |
| 1569 |
|
* Returns a Tcl_Interp * for the master interpreter or NULL if none. |
| 1570 |
|
* |
| 1571 |
|
* Side effects: |
| 1572 |
|
* None. |
| 1573 |
|
* |
| 1574 |
|
*---------------------------------------------------------------------- |
| 1575 |
|
*/ |
| 1576 |
|
|
| 1577 |
|
Tcl_Interp * |
| 1578 |
|
Tcl_GetMaster(interp) |
| 1579 |
|
Tcl_Interp *interp; /* Get the master of this interpreter. */ |
| 1580 |
|
{ |
| 1581 |
|
Slave *slavePtr; /* Slave record of this interpreter. */ |
| 1582 |
|
|
| 1583 |
|
if (interp == (Tcl_Interp *) NULL) { |
| 1584 |
|
return NULL; |
| 1585 |
|
} |
| 1586 |
|
slavePtr = &((InterpInfo *) ((Interp *) interp)->interpInfo)->slave; |
| 1587 |
|
return slavePtr->masterInterp; |
| 1588 |
|
} |
| 1589 |
|
|
| 1590 |
|
/* |
| 1591 |
|
*---------------------------------------------------------------------- |
| 1592 |
|
* |
| 1593 |
|
* Tcl_GetInterpPath -- |
| 1594 |
|
* |
| 1595 |
|
* Sets the result of the asking interpreter to a proper Tcl list |
| 1596 |
|
* containing the names of interpreters between the asking and |
| 1597 |
|
* target interpreters. The target interpreter must be either the |
| 1598 |
|
* same as the asking interpreter or one of its slaves (including |
| 1599 |
|
* recursively). |
| 1600 |
|
* |
| 1601 |
|
* Results: |
| 1602 |
|
* TCL_OK if the target interpreter is the same as, or a descendant |
| 1603 |
|
* of, the asking interpreter; TCL_ERROR else. This way one can |
| 1604 |
|
* distinguish between the case where the asking and target interps |
| 1605 |
|
* are the same (an empty list is the result, and TCL_OK is returned) |
| 1606 |
|
* and when the target is not a descendant of the asking interpreter |
| 1607 |
|
* (in which case the Tcl result is an error message and the function |
| 1608 |
|
* returns TCL_ERROR). |
| 1609 |
|
* |
| 1610 |
|
* Side effects: |
| 1611 |
|
* None. |
| 1612 |
|
* |
| 1613 |
|
*---------------------------------------------------------------------- |
| 1614 |
|
*/ |
| 1615 |
|
|
| 1616 |
|
int |
| 1617 |
|
Tcl_GetInterpPath(askingInterp, targetInterp) |
| 1618 |
|
Tcl_Interp *askingInterp; /* Interpreter to start search from. */ |
| 1619 |
|
Tcl_Interp *targetInterp; /* Interpreter to find. */ |
| 1620 |
|
{ |
| 1621 |
|
InterpInfo *iiPtr; |
| 1622 |
|
|
| 1623 |
|
if (targetInterp == askingInterp) { |
| 1624 |
|
return TCL_OK; |
| 1625 |
|
} |
| 1626 |
|
if (targetInterp == NULL) { |
| 1627 |
|
return TCL_ERROR; |
| 1628 |
|
} |
| 1629 |
|
iiPtr = (InterpInfo *) ((Interp *) targetInterp)->interpInfo; |
| 1630 |
|
if (Tcl_GetInterpPath(askingInterp, iiPtr->slave.masterInterp) != TCL_OK) { |
| 1631 |
|
return TCL_ERROR; |
| 1632 |
|
} |
| 1633 |
|
Tcl_AppendElement(askingInterp, |
| 1634 |
|
Tcl_GetHashKey(&iiPtr->master.slaveTable, |
| 1635 |
|
iiPtr->slave.slaveEntryPtr)); |
| 1636 |
|
return TCL_OK; |
| 1637 |
|
} |
| 1638 |
|
|
| 1639 |
|
/* |
| 1640 |
|
*---------------------------------------------------------------------- |
| 1641 |
|
* |
| 1642 |
|
* GetInterp -- |
| 1643 |
|
* |
| 1644 |
|
* Helper function to find a slave interpreter given a pathname. |
| 1645 |
|
* |
| 1646 |
|
* Results: |
| 1647 |
|
* Returns the slave interpreter known by that name in the calling |
| 1648 |
|
* interpreter, or NULL if no interpreter known by that name exists. |
| 1649 |
|
* |
| 1650 |
|
* Side effects: |
| 1651 |
|
* Assigns to the pointer variable passed in, if not NULL. |
| 1652 |
|
* |
| 1653 |
|
*---------------------------------------------------------------------- |
| 1654 |
|
*/ |
| 1655 |
|
|
| 1656 |
|
static Tcl_Interp * |
| 1657 |
|
GetInterp(interp, pathPtr) |
| 1658 |
|
Tcl_Interp *interp; /* Interp. to start search from. */ |
| 1659 |
|
Tcl_Obj *pathPtr; /* List object containing name of interp. to |
| 1660 |
|
* be found. */ |
| 1661 |
|
{ |
| 1662 |
|
Tcl_HashEntry *hPtr; /* Search element. */ |
| 1663 |
|
Slave *slavePtr; /* Interim slave record. */ |
| 1664 |
|
Tcl_Obj **objv; |
| 1665 |
|
int objc, i; |
| 1666 |
|
Tcl_Interp *searchInterp; /* Interim storage for interp. to find. */ |
| 1667 |
|
InterpInfo *masterInfoPtr; |
| 1668 |
|
|
| 1669 |
|
if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) { |
| 1670 |
|
return NULL; |
| 1671 |
|
} |
| 1672 |
|
|
| 1673 |
|
searchInterp = interp; |
| 1674 |
|
for (i = 0; i < objc; i++) { |
| 1675 |
|
masterInfoPtr = (InterpInfo *) ((Interp *) searchInterp)->interpInfo; |
| 1676 |
|
hPtr = Tcl_FindHashEntry(&masterInfoPtr->master.slaveTable, |
| 1677 |
|
Tcl_GetString(objv[i])); |
| 1678 |
|
if (hPtr == NULL) { |
| 1679 |
|
searchInterp = NULL; |
| 1680 |
|
break; |
| 1681 |
|
} |
| 1682 |
|
slavePtr = (Slave *) Tcl_GetHashValue(hPtr); |
| 1683 |
|
searchInterp = slavePtr->slaveInterp; |
| 1684 |
|
if (searchInterp == NULL) { |
| 1685 |
|
break; |
| 1686 |
|
} |
| 1687 |
|
} |
| 1688 |
|
if (searchInterp == NULL) { |
| 1689 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1690 |
|
"could not find interpreter \"", |
| 1691 |
|
Tcl_GetString(pathPtr), "\"", (char *) NULL); |
| 1692 |
|
} |
| 1693 |
|
return searchInterp; |
| 1694 |
|
} |
| 1695 |
|
|
| 1696 |
|
/* |
| 1697 |
|
*---------------------------------------------------------------------- |
| 1698 |
|
* |
| 1699 |
|
* SlaveCreate -- |
| 1700 |
|
* |
| 1701 |
|
* Helper function to do the actual work of creating a slave interp |
| 1702 |
|
* and new object command. Also optionally makes the new slave |
| 1703 |
|
* interpreter "safe". |
| 1704 |
|
* |
| 1705 |
|
* Results: |
| 1706 |
|
* Returns the new Tcl_Interp * if successful or NULL if not. If failed, |
| 1707 |
|
* the result of the invoking interpreter contains an error message. |
| 1708 |
|
* |
| 1709 |
|
* Side effects: |
| 1710 |
|
* Creates a new slave interpreter and a new object command. |
| 1711 |
|
* |
| 1712 |
|
*---------------------------------------------------------------------- |
| 1713 |
|
*/ |
| 1714 |
|
|
| 1715 |
|
static Tcl_Interp * |
| 1716 |
|
SlaveCreate(interp, pathPtr, safe) |
| 1717 |
|
Tcl_Interp *interp; /* Interp. to start search from. */ |
| 1718 |
|
Tcl_Obj *pathPtr; /* Path (name) of slave to create. */ |
| 1719 |
|
int safe; /* Should we make it "safe"? */ |
| 1720 |
|
{ |
| 1721 |
|
Tcl_Interp *masterInterp, *slaveInterp; |
| 1722 |
|
Slave *slavePtr; |
| 1723 |
|
InterpInfo *masterInfoPtr; |
| 1724 |
|
Tcl_HashEntry *hPtr; |
| 1725 |
|
char *path; |
| 1726 |
|
int new, objc; |
| 1727 |
|
Tcl_Obj **objv; |
| 1728 |
|
|
| 1729 |
|
if (Tcl_ListObjGetElements(interp, pathPtr, &objc, &objv) != TCL_OK) { |
| 1730 |
|
return NULL; |
| 1731 |
|
} |
| 1732 |
|
if (objc < 2) { |
| 1733 |
|
masterInterp = interp; |
| 1734 |
|
path = Tcl_GetString(pathPtr); |
| 1735 |
|
} else { |
| 1736 |
|
Tcl_Obj *objPtr; |
| 1737 |
|
|
| 1738 |
|
objPtr = Tcl_NewListObj(objc - 1, objv); |
| 1739 |
|
masterInterp = GetInterp(interp, objPtr); |
| 1740 |
|
Tcl_DecrRefCount(objPtr); |
| 1741 |
|
if (masterInterp == NULL) { |
| 1742 |
|
return NULL; |
| 1743 |
|
} |
| 1744 |
|
path = Tcl_GetString(objv[objc - 1]); |
| 1745 |
|
} |
| 1746 |
|
if (safe == 0) { |
| 1747 |
|
safe = Tcl_IsSafe(masterInterp); |
| 1748 |
|
} |
| 1749 |
|
|
| 1750 |
|
masterInfoPtr = (InterpInfo *) ((Interp *) masterInterp)->interpInfo; |
| 1751 |
|
hPtr = Tcl_CreateHashEntry(&masterInfoPtr->master.slaveTable, path, &new); |
| 1752 |
|
if (new == 0) { |
| 1753 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1754 |
|
"interpreter named \"", path, |
| 1755 |
|
"\" already exists, cannot create", (char *) NULL); |
| 1756 |
|
return NULL; |
| 1757 |
|
} |
| 1758 |
|
|
| 1759 |
|
slaveInterp = Tcl_CreateInterp(); |
| 1760 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1761 |
|
slavePtr->masterInterp = masterInterp; |
| 1762 |
|
slavePtr->slaveEntryPtr = hPtr; |
| 1763 |
|
slavePtr->slaveInterp = slaveInterp; |
| 1764 |
|
slavePtr->interpCmd = Tcl_CreateObjCommand(masterInterp, path, |
| 1765 |
|
SlaveObjCmd, (ClientData) slaveInterp, SlaveObjCmdDeleteProc); |
| 1766 |
|
Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); |
| 1767 |
|
Tcl_SetHashValue(hPtr, (ClientData) slavePtr); |
| 1768 |
|
Tcl_SetVar(slaveInterp, "tcl_interactive", "0", TCL_GLOBAL_ONLY); |
| 1769 |
|
|
| 1770 |
|
/* |
| 1771 |
|
* Inherit the recursion limit. |
| 1772 |
|
*/ |
| 1773 |
|
((Interp *) slaveInterp)->maxNestingDepth = |
| 1774 |
|
((Interp *) masterInterp)->maxNestingDepth ; |
| 1775 |
|
|
| 1776 |
|
if (safe) { |
| 1777 |
|
if (Tcl_MakeSafe(slaveInterp) == TCL_ERROR) { |
| 1778 |
|
goto error; |
| 1779 |
|
} |
| 1780 |
|
} else { |
| 1781 |
|
if (Tcl_Init(slaveInterp) == TCL_ERROR) { |
| 1782 |
|
goto error; |
| 1783 |
|
} |
| 1784 |
|
} |
| 1785 |
|
return slaveInterp; |
| 1786 |
|
|
| 1787 |
|
error: |
| 1788 |
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
| 1789 |
|
Tcl_DeleteInterp(slaveInterp); |
| 1790 |
|
|
| 1791 |
|
return NULL; |
| 1792 |
|
} |
| 1793 |
|
|
| 1794 |
|
/* |
| 1795 |
|
*---------------------------------------------------------------------- |
| 1796 |
|
* |
| 1797 |
|
* SlaveObjCmd -- |
| 1798 |
|
* |
| 1799 |
|
* Command to manipulate an interpreter, e.g. to send commands to it |
| 1800 |
|
* to be evaluated. One such command exists for each slave interpreter. |
| 1801 |
|
* |
| 1802 |
|
* Results: |
| 1803 |
|
* A standard Tcl result. |
| 1804 |
|
* |
| 1805 |
|
* Side effects: |
| 1806 |
|
* See user documentation for details. |
| 1807 |
|
* |
| 1808 |
|
*---------------------------------------------------------------------- |
| 1809 |
|
*/ |
| 1810 |
|
|
| 1811 |
|
static int |
| 1812 |
|
SlaveObjCmd(clientData, interp, objc, objv) |
| 1813 |
|
ClientData clientData; /* Slave interpreter. */ |
| 1814 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 1815 |
|
int objc; /* Number of arguments. */ |
| 1816 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 1817 |
|
{ |
| 1818 |
|
Tcl_Interp *slaveInterp; |
| 1819 |
|
int index; |
| 1820 |
|
static char *options[] = { |
| 1821 |
|
"alias", "aliases", "eval", "expose", |
| 1822 |
|
"hide", "hidden", "issafe", "invokehidden", |
| 1823 |
|
"marktrusted", NULL |
| 1824 |
|
}; |
| 1825 |
|
enum options { |
| 1826 |
|
OPT_ALIAS, OPT_ALIASES, OPT_EVAL, OPT_EXPOSE, |
| 1827 |
|
OPT_HIDE, OPT_HIDDEN, OPT_ISSAFE, OPT_INVOKEHIDDEN, |
| 1828 |
|
OPT_MARKTRUSTED |
| 1829 |
|
}; |
| 1830 |
|
|
| 1831 |
|
slaveInterp = (Tcl_Interp *) clientData; |
| 1832 |
|
if (slaveInterp == NULL) { |
| 1833 |
|
panic("SlaveObjCmd: interpreter has been deleted"); |
| 1834 |
|
} |
| 1835 |
|
|
| 1836 |
|
if (objc < 2) { |
| 1837 |
|
Tcl_WrongNumArgs(interp, 1, objv, "cmd ?arg ...?"); |
| 1838 |
|
return TCL_ERROR; |
| 1839 |
|
} |
| 1840 |
|
if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, |
| 1841 |
|
&index) != TCL_OK) { |
| 1842 |
|
return TCL_ERROR; |
| 1843 |
|
} |
| 1844 |
|
|
| 1845 |
|
switch ((enum options) index) { |
| 1846 |
|
case OPT_ALIAS: { |
| 1847 |
|
if (objc == 3) { |
| 1848 |
|
return AliasDescribe(interp, slaveInterp, objv[2]); |
| 1849 |
|
} |
| 1850 |
|
if (Tcl_GetString(objv[3])[0] == '\0') { |
| 1851 |
|
if (objc == 4) { |
| 1852 |
|
return AliasDelete(interp, slaveInterp, objv[2]); |
| 1853 |
|
} |
| 1854 |
|
} else { |
| 1855 |
|
return AliasCreate(interp, slaveInterp, interp, objv[2], |
| 1856 |
|
objv[3], objc - 4, objv + 4); |
| 1857 |
|
} |
| 1858 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 1859 |
|
"aliasName ?targetName? ?args..?"); |
| 1860 |
|
return TCL_ERROR; |
| 1861 |
|
} |
| 1862 |
|
case OPT_ALIASES: { |
| 1863 |
|
return AliasList(interp, slaveInterp); |
| 1864 |
|
} |
| 1865 |
|
case OPT_EVAL: { |
| 1866 |
|
if (objc < 3) { |
| 1867 |
|
Tcl_WrongNumArgs(interp, 2, objv, "arg ?arg ...?"); |
| 1868 |
|
return TCL_ERROR; |
| 1869 |
|
} |
| 1870 |
|
return SlaveEval(interp, slaveInterp, objc - 2, objv + 2); |
| 1871 |
|
} |
| 1872 |
|
case OPT_EXPOSE: { |
| 1873 |
|
if ((objc < 3) || (objc > 4)) { |
| 1874 |
|
Tcl_WrongNumArgs(interp, 2, objv, "hiddenCmdName ?cmdName?"); |
| 1875 |
|
return TCL_ERROR; |
| 1876 |
|
} |
| 1877 |
|
return SlaveExpose(interp, slaveInterp, objc - 2, objv + 2); |
| 1878 |
|
} |
| 1879 |
|
case OPT_HIDE: { |
| 1880 |
|
if ((objc < 3) || (objc > 4)) { |
| 1881 |
|
Tcl_WrongNumArgs(interp, 2, objv, "cmdName ?hiddenCmdName?"); |
| 1882 |
|
return TCL_ERROR; |
| 1883 |
|
} |
| 1884 |
|
return SlaveHide(interp, slaveInterp, objc - 2, objv + 2); |
| 1885 |
|
} |
| 1886 |
|
case OPT_HIDDEN: { |
| 1887 |
|
if (objc != 2) { |
| 1888 |
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
| 1889 |
|
return TCL_ERROR; |
| 1890 |
|
} |
| 1891 |
|
return SlaveHidden(interp, slaveInterp); |
| 1892 |
|
} |
| 1893 |
|
case OPT_ISSAFE: { |
| 1894 |
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_IsSafe(slaveInterp)); |
| 1895 |
|
return TCL_OK; |
| 1896 |
|
} |
| 1897 |
|
case OPT_INVOKEHIDDEN: { |
| 1898 |
|
int global, i, index; |
| 1899 |
|
static char *hiddenOptions[] = { |
| 1900 |
|
"-global", "--", NULL |
| 1901 |
|
}; |
| 1902 |
|
enum hiddenOption { |
| 1903 |
|
OPT_GLOBAL, OPT_LAST |
| 1904 |
|
}; |
| 1905 |
|
global = 0; |
| 1906 |
|
for (i = 2; i < objc; i++) { |
| 1907 |
|
if (Tcl_GetString(objv[i])[0] != '-') { |
| 1908 |
|
break; |
| 1909 |
|
} |
| 1910 |
|
if (Tcl_GetIndexFromObj(interp, objv[i], hiddenOptions, |
| 1911 |
|
"option", 0, &index) != TCL_OK) { |
| 1912 |
|
return TCL_ERROR; |
| 1913 |
|
} |
| 1914 |
|
if (index == OPT_GLOBAL) { |
| 1915 |
|
global = 1; |
| 1916 |
|
} else { |
| 1917 |
|
i++; |
| 1918 |
|
break; |
| 1919 |
|
} |
| 1920 |
|
} |
| 1921 |
|
if (objc - i < 1) { |
| 1922 |
|
Tcl_WrongNumArgs(interp, 2, objv, |
| 1923 |
|
"?-global? ?--? cmd ?arg ..?"); |
| 1924 |
|
return TCL_ERROR; |
| 1925 |
|
} |
| 1926 |
|
return SlaveInvokeHidden(interp, slaveInterp, global, objc - i, |
| 1927 |
|
objv + i); |
| 1928 |
|
} |
| 1929 |
|
case OPT_MARKTRUSTED: { |
| 1930 |
|
if (objc != 2) { |
| 1931 |
|
Tcl_WrongNumArgs(interp, 2, objv, NULL); |
| 1932 |
|
return TCL_ERROR; |
| 1933 |
|
} |
| 1934 |
|
return SlaveMarkTrusted(interp, slaveInterp); |
| 1935 |
|
} |
| 1936 |
|
} |
| 1937 |
|
|
| 1938 |
|
return TCL_ERROR; |
| 1939 |
|
} |
| 1940 |
|
|
| 1941 |
|
/* |
| 1942 |
|
*---------------------------------------------------------------------- |
| 1943 |
|
* |
| 1944 |
|
* SlaveObjCmdDeleteProc -- |
| 1945 |
|
* |
| 1946 |
|
* Invoked when an object command for a slave interpreter is deleted; |
| 1947 |
|
* cleans up all state associated with the slave interpreter and destroys |
| 1948 |
|
* the slave interpreter. |
| 1949 |
|
* |
| 1950 |
|
* Results: |
| 1951 |
|
* None. |
| 1952 |
|
* |
| 1953 |
|
* Side effects: |
| 1954 |
|
* Cleans up all state associated with the slave interpreter and |
| 1955 |
|
* destroys the slave interpreter. |
| 1956 |
|
* |
| 1957 |
|
*---------------------------------------------------------------------- |
| 1958 |
|
*/ |
| 1959 |
|
|
| 1960 |
|
static void |
| 1961 |
|
SlaveObjCmdDeleteProc(clientData) |
| 1962 |
|
ClientData clientData; /* The SlaveRecord for the command. */ |
| 1963 |
|
{ |
| 1964 |
|
Slave *slavePtr; /* Interim storage for Slave record. */ |
| 1965 |
|
Tcl_Interp *slaveInterp; /* And for a slave interp. */ |
| 1966 |
|
|
| 1967 |
|
slaveInterp = (Tcl_Interp *) clientData; |
| 1968 |
|
slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; |
| 1969 |
|
|
| 1970 |
|
/* |
| 1971 |
|
* Unlink the slave from its master interpreter. |
| 1972 |
|
*/ |
| 1973 |
|
|
| 1974 |
|
Tcl_DeleteHashEntry(slavePtr->slaveEntryPtr); |
| 1975 |
|
|
| 1976 |
|
/* |
| 1977 |
|
* Set to NULL so that when the InterpInfo is cleaned up in the slave |
| 1978 |
|
* it does not try to delete the command causing all sorts of grief. |
| 1979 |
|
* See SlaveRecordDeleteProc(). |
| 1980 |
|
*/ |
| 1981 |
|
|
| 1982 |
|
slavePtr->interpCmd = NULL; |
| 1983 |
|
|
| 1984 |
|
if (slavePtr->slaveInterp != NULL) { |
| 1985 |
|
Tcl_DeleteInterp(slavePtr->slaveInterp); |
| 1986 |
|
} |
| 1987 |
|
} |
| 1988 |
|
|
| 1989 |
|
/* |
| 1990 |
|
*---------------------------------------------------------------------- |
| 1991 |
|
* |
| 1992 |
|
* SlaveEval -- |
| 1993 |
|
* |
| 1994 |
|
* Helper function to evaluate a command in a slave interpreter. |
| 1995 |
|
* |
| 1996 |
|
* Results: |
| 1997 |
|
* A standard Tcl result. |
| 1998 |
|
* |
| 1999 |
|
* Side effects: |
| 2000 |
|
* Whatever the command does. |
| 2001 |
|
* |
| 2002 |
|
*---------------------------------------------------------------------- |
| 2003 |
|
*/ |
| 2004 |
|
|
| 2005 |
|
static int |
| 2006 |
|
SlaveEval(interp, slaveInterp, objc, objv) |
| 2007 |
|
Tcl_Interp *interp; /* Interp for error return. */ |
| 2008 |
|
Tcl_Interp *slaveInterp; /* The slave interpreter in which command |
| 2009 |
|
* will be evaluated. */ |
| 2010 |
|
int objc; /* Number of arguments. */ |
| 2011 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 2012 |
|
{ |
| 2013 |
|
int result; |
| 2014 |
|
Tcl_Obj *objPtr; |
| 2015 |
|
|
| 2016 |
|
Tcl_Preserve((ClientData) slaveInterp); |
| 2017 |
|
Tcl_AllowExceptions(slaveInterp); |
| 2018 |
|
|
| 2019 |
|
if (objc == 1) { |
| 2020 |
|
result = Tcl_EvalObjEx(slaveInterp, objv[0], 0); |
| 2021 |
|
} else { |
| 2022 |
|
objPtr = Tcl_ConcatObj(objc, objv); |
| 2023 |
|
Tcl_IncrRefCount(objPtr); |
| 2024 |
|
result = Tcl_EvalObjEx(slaveInterp, objPtr, 0); |
| 2025 |
|
Tcl_DecrRefCount(objPtr); |
| 2026 |
|
} |
| 2027 |
|
TclTransferResult(slaveInterp, result, interp); |
| 2028 |
|
|
| 2029 |
|
Tcl_Release((ClientData) slaveInterp); |
| 2030 |
|
return result; |
| 2031 |
|
} |
| 2032 |
|
|
| 2033 |
|
/* |
| 2034 |
|
*---------------------------------------------------------------------- |
| 2035 |
|
* |
| 2036 |
|
* SlaveExpose -- |
| 2037 |
|
* |
| 2038 |
|
* Helper function to expose a command in a slave interpreter. |
| 2039 |
|
* |
| 2040 |
|
* Results: |
| 2041 |
|
* A standard Tcl result. |
| 2042 |
|
* |
| 2043 |
|
* Side effects: |
| 2044 |
|
* After this call scripts in the slave will be able to invoke |
| 2045 |
|
* the newly exposed command. |
| 2046 |
|
* |
| 2047 |
|
*---------------------------------------------------------------------- |
| 2048 |
|
*/ |
| 2049 |
|
|
| 2050 |
|
static int |
| 2051 |
|
SlaveExpose(interp, slaveInterp, objc, objv) |
| 2052 |
|
Tcl_Interp *interp; /* Interp for error return. */ |
| 2053 |
|
Tcl_Interp *slaveInterp; /* Interp in which command will be exposed. */ |
| 2054 |
|
int objc; /* Number of arguments. */ |
| 2055 |
|
Tcl_Obj *CONST objv[]; /* Argument strings. */ |
| 2056 |
|
{ |
| 2057 |
|
char *name; |
| 2058 |
|
|
| 2059 |
|
if (Tcl_IsSafe(interp)) { |
| 2060 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 2061 |
|
"permission denied: safe interpreter cannot expose commands", |
| 2062 |
|
(char *) NULL); |
| 2063 |
|
return TCL_ERROR; |
| 2064 |
|
} |
| 2065 |
|
|
| 2066 |
|
name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]); |
| 2067 |
|
if (Tcl_ExposeCommand(slaveInterp, Tcl_GetString(objv[0]), |
| 2068 |
|
name) != TCL_OK) { |
| 2069 |
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
| 2070 |
|
return TCL_ERROR; |
| 2071 |
|
} |
| 2072 |
|
return TCL_OK; |
| 2073 |
|
} |
| 2074 |
|
|
| 2075 |
|
/* |
| 2076 |
|
*---------------------------------------------------------------------- |
| 2077 |
|
* |
| 2078 |
|
* SlaveHide -- |
| 2079 |
|
* |
| 2080 |
|
* Helper function to hide a command in a slave interpreter. |
| 2081 |
|
* |
| 2082 |
|
* Results: |
| 2083 |
|
* A standard Tcl result. |
| 2084 |
|
* |
| 2085 |
|
* Side effects: |
| 2086 |
|
* After this call scripts in the slave will no longer be able |
| 2087 |
|
* to invoke the named command. |
| 2088 |
|
* |
| 2089 |
|
*---------------------------------------------------------------------- |
| 2090 |
|
*/ |
| 2091 |
|
|
| 2092 |
|
static int |
| 2093 |
|
SlaveHide(interp, slaveInterp, objc, objv) |
| 2094 |
|
Tcl_Interp *interp; /* Interp for error return. */ |
| 2095 |
|
Tcl_Interp *slaveInterp; /* Interp in which command will be exposed. */ |
| 2096 |
|
int objc; /* Number of arguments. */ |
| 2097 |
|
Tcl_Obj *CONST objv[]; /* Argument strings. */ |
| 2098 |
|
{ |
| 2099 |
|
char *name; |
| 2100 |
|
|
| 2101 |
|
if (Tcl_IsSafe(interp)) { |
| 2102 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 2103 |
|
"permission denied: safe interpreter cannot hide commands", |
| 2104 |
|
(char *) NULL); |
| 2105 |
|
return TCL_ERROR; |
| 2106 |
|
} |
| 2107 |
|
|
| 2108 |
|
name = Tcl_GetString(objv[(objc == 1) ? 0 : 1]); |
| 2109 |
|
if (Tcl_HideCommand(slaveInterp, Tcl_GetString(objv[0]), |
| 2110 |
|
name) != TCL_OK) { |
| 2111 |
|
TclTransferResult(slaveInterp, TCL_ERROR, interp); |
| 2112 |
|
return TCL_ERROR; |
| 2113 |
|
} |
| 2114 |
|
return TCL_OK; |
| 2115 |
|
} |
| 2116 |
|
|
| 2117 |
|
/* |
| 2118 |
|
*---------------------------------------------------------------------- |
| 2119 |
|
* |
| 2120 |
|
* SlaveHidden -- |
| 2121 |
|
* |
| 2122 |
|
* Helper function to compute list of hidden commands in a slave |
| 2123 |
|
* interpreter. |
| 2124 |
|
* |
| 2125 |
|
* Results: |
| 2126 |
|
* A standard Tcl result. |
| 2127 |
|
* |
| 2128 |
|
* Side effects: |
| 2129 |
|
* None. |
| 2130 |
|
* |
| 2131 |
|
*---------------------------------------------------------------------- |
| 2132 |
|
*/ |
| 2133 |
|
|
| 2134 |
|
static int |
| 2135 |
|
SlaveHidden(interp, slaveInterp) |
| 2136 |
|
Tcl_Interp *interp; /* Interp for data return. */ |
| 2137 |
|
Tcl_Interp *slaveInterp; /* Interp whose hidden commands to query. */ |
| 2138 |
|
{ |
| 2139 |
|
Tcl_Obj *listObjPtr; /* Local object pointer. */ |
| 2140 |
|
Tcl_HashTable *hTblPtr; /* For local searches. */ |
| 2141 |
|
Tcl_HashEntry *hPtr; /* For local searches. */ |
| 2142 |
|
Tcl_HashSearch hSearch; /* For local searches. */ |
| 2143 |
|
|
| 2144 |
|
listObjPtr = Tcl_GetObjResult(interp); |
| 2145 |
|
hTblPtr = ((Interp *) slaveInterp)->hiddenCmdTablePtr; |
| 2146 |
|
if (hTblPtr != (Tcl_HashTable *) NULL) { |
| 2147 |
|
for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch); |
| 2148 |
|
hPtr != (Tcl_HashEntry *) NULL; |
| 2149 |
|
hPtr = Tcl_NextHashEntry(&hSearch)) { |
| 2150 |
|
|
| 2151 |
|
Tcl_ListObjAppendElement(NULL, listObjPtr, |
| 2152 |
|
Tcl_NewStringObj(Tcl_GetHashKey(hTblPtr, hPtr), -1)); |
| 2153 |
|
} |
| 2154 |
|
} |
| 2155 |
|
return TCL_OK; |
| 2156 |
|
} |
| 2157 |
|
|
| 2158 |
|
/* |
| 2159 |
|
*---------------------------------------------------------------------- |
| 2160 |
|
* |
| 2161 |
|
* SlaveInvokeHidden -- |
| 2162 |
|
* |
| 2163 |
|
* Helper function to invoke a hidden command in a slave interpreter. |
| 2164 |
|
* |
| 2165 |
|
* Results: |
| 2166 |
|
* A standard Tcl result. |
| 2167 |
|
* |
| 2168 |
|
* Side effects: |
| 2169 |
|
* Whatever the hidden command does. |
| 2170 |
|
* |
| 2171 |
|
*---------------------------------------------------------------------- |
| 2172 |
|
*/ |
| 2173 |
|
|
| 2174 |
|
static int |
| 2175 |
|
SlaveInvokeHidden(interp, slaveInterp, global, objc, objv) |
| 2176 |
|
Tcl_Interp *interp; /* Interp for error return. */ |
| 2177 |
|
Tcl_Interp *slaveInterp; /* The slave interpreter in which command |
| 2178 |
|
* will be invoked. */ |
| 2179 |
|
int global; /* Non-zero to invoke in global namespace. */ |
| 2180 |
|
int objc; /* Number of arguments. */ |
| 2181 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 2182 |
|
{ |
| 2183 |
|
int result; |
| 2184 |
|
|
| 2185 |
|
if (Tcl_IsSafe(interp)) { |
| 2186 |
|
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
| 2187 |
|
"not allowed to invoke hidden commands from safe interpreter", |
| 2188 |
|
-1); |
| 2189 |
|
return TCL_ERROR; |
| 2190 |
|
} |
| 2191 |
|
|
| 2192 |
|
Tcl_Preserve((ClientData) slaveInterp); |
| 2193 |
|
Tcl_AllowExceptions(slaveInterp); |
| 2194 |
|
|
| 2195 |
|
if (global) { |
| 2196 |
|
result = TclObjInvokeGlobal(slaveInterp, objc, objv, |
| 2197 |
|
TCL_INVOKE_HIDDEN); |
| 2198 |
|
} else { |
| 2199 |
|
result = TclObjInvoke(slaveInterp, objc, objv, TCL_INVOKE_HIDDEN); |
| 2200 |
|
} |
| 2201 |
|
|
| 2202 |
|
TclTransferResult(slaveInterp, result, interp); |
| 2203 |
|
|
| 2204 |
|
Tcl_Release((ClientData) slaveInterp); |
| 2205 |
|
return result; |
| 2206 |
|
} |
| 2207 |
|
|
| 2208 |
|
/* |
| 2209 |
|
*---------------------------------------------------------------------- |
| 2210 |
|
* |
| 2211 |
|
* SlaveMarkTrusted -- |
| 2212 |
|
* |
| 2213 |
|
* Helper function to mark a slave interpreter as trusted (unsafe). |
| 2214 |
|
* |
| 2215 |
|
* Results: |
| 2216 |
|
* A standard Tcl result. |
| 2217 |
|
* |
| 2218 |
|
* Side effects: |
| 2219 |
|
* After this call the hard-wired security checks in the core no |
| 2220 |
|
* longer prevent the slave from performing certain operations. |
| 2221 |
|
* |
| 2222 |
|
*---------------------------------------------------------------------- |
| 2223 |
|
*/ |
| 2224 |
|
|
| 2225 |
|
static int |
| 2226 |
|
SlaveMarkTrusted(interp, slaveInterp) |
| 2227 |
|
Tcl_Interp *interp; /* Interp for error return. */ |
| 2228 |
|
Tcl_Interp *slaveInterp; /* The slave interpreter which will be |
| 2229 |
|
* marked trusted. */ |
| 2230 |
|
{ |
| 2231 |
|
if (Tcl_IsSafe(interp)) { |
| 2232 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 2233 |
|
"permission denied: safe interpreter cannot mark trusted", |
| 2234 |
|
(char *) NULL); |
| 2235 |
|
return TCL_ERROR; |
| 2236 |
|
} |
| 2237 |
|
((Interp *) slaveInterp)->flags &= ~SAFE_INTERP; |
| 2238 |
|
return TCL_OK; |
| 2239 |
|
} |
| 2240 |
|
|
| 2241 |
|
/* |
| 2242 |
|
*---------------------------------------------------------------------- |
| 2243 |
|
* |
| 2244 |
|
* Tcl_IsSafe -- |
| 2245 |
|
* |
| 2246 |
|
* Determines whether an interpreter is safe |
| 2247 |
|
* |
| 2248 |
|
* Results: |
| 2249 |
|
* 1 if it is safe, 0 if it is not. |
| 2250 |
|
* |
| 2251 |
|
* Side effects: |
| 2252 |
|
* None. |
| 2253 |
|
* |
| 2254 |
|
*---------------------------------------------------------------------- |
| 2255 |
|
*/ |
| 2256 |
|
|
| 2257 |
|
int |
| 2258 |
|
Tcl_IsSafe(interp) |
| 2259 |
|
Tcl_Interp *interp; /* Is this interpreter "safe" ? */ |
| 2260 |
|
{ |
| 2261 |
|
Interp *iPtr; |
| 2262 |
|
|
| 2263 |
|
if (interp == (Tcl_Interp *) NULL) { |
| 2264 |
|
return 0; |
| 2265 |
|
} |
| 2266 |
|
iPtr = (Interp *) interp; |
| 2267 |
|
|
| 2268 |
|
return ( (iPtr->flags) & SAFE_INTERP ) ? 1 : 0 ; |
| 2269 |
|
} |
| 2270 |
|
|
| 2271 |
|
/* |
| 2272 |
|
*---------------------------------------------------------------------- |
| 2273 |
|
* |
| 2274 |
|
* Tcl_MakeSafe -- |
| 2275 |
|
* |
| 2276 |
|
* Makes its argument interpreter contain only functionality that is |
| 2277 |
|
* defined to be part of Safe Tcl. Unsafe commands are hidden, the |
| 2278 |
|
* env array is unset, and the standard channels are removed. |
| 2279 |
|
* |
| 2280 |
|
* Results: |
| 2281 |
|
* None. |
| 2282 |
|
* |
| 2283 |
|
* Side effects: |
| 2284 |
|
* Hides commands in its argument interpreter, and removes settings |
| 2285 |
|
* and channels. |
| 2286 |
|
* |
| 2287 |
|
*---------------------------------------------------------------------- |
| 2288 |
|
*/ |
| 2289 |
|
|
| 2290 |
|
int |
| 2291 |
|
Tcl_MakeSafe(interp) |
| 2292 |
|
Tcl_Interp *interp; /* Interpreter to be made safe. */ |
| 2293 |
|
{ |
| 2294 |
|
Tcl_Channel chan; /* Channel to remove from |
| 2295 |
|
* safe interpreter. */ |
| 2296 |
|
Interp *iPtr = (Interp *) interp; |
| 2297 |
|
|
| 2298 |
|
TclHideUnsafeCommands(interp); |
| 2299 |
|
|
| 2300 |
|
iPtr->flags |= SAFE_INTERP; |
| 2301 |
|
|
| 2302 |
|
/* |
| 2303 |
|
* Unsetting variables : (which should not have been set |
| 2304 |
|
* in the first place, but...) |
| 2305 |
|
*/ |
| 2306 |
|
|
| 2307 |
|
/* |
| 2308 |
|
* No env array in a safe slave. |
| 2309 |
|
*/ |
| 2310 |
|
|
| 2311 |
|
Tcl_UnsetVar(interp, "env", TCL_GLOBAL_ONLY); |
| 2312 |
|
|
| 2313 |
|
/* |
| 2314 |
|
* Remove unsafe parts of tcl_platform |
| 2315 |
|
*/ |
| 2316 |
|
|
| 2317 |
|
Tcl_UnsetVar2(interp, "tcl_platform", "os", TCL_GLOBAL_ONLY); |
| 2318 |
|
Tcl_UnsetVar2(interp, "tcl_platform", "osVersion", TCL_GLOBAL_ONLY); |
| 2319 |
|
Tcl_UnsetVar2(interp, "tcl_platform", "machine", TCL_GLOBAL_ONLY); |
| 2320 |
|
Tcl_UnsetVar2(interp, "tcl_platform", "user", TCL_GLOBAL_ONLY); |
| 2321 |
|
|
| 2322 |
|
/* |
| 2323 |
|
* Unset path informations variables |
| 2324 |
|
* (the only one remaining is [info nameofexecutable]) |
| 2325 |
|
*/ |
| 2326 |
|
|
| 2327 |
|
Tcl_UnsetVar(interp, "tclDefaultLibrary", TCL_GLOBAL_ONLY); |
| 2328 |
|
Tcl_UnsetVar(interp, "tcl_library", TCL_GLOBAL_ONLY); |
| 2329 |
|
Tcl_UnsetVar(interp, "tcl_pkgPath", TCL_GLOBAL_ONLY); |
| 2330 |
|
|
| 2331 |
|
/* |
| 2332 |
|
* Remove the standard channels from the interpreter; safe interpreters |
| 2333 |
|
* do not ordinarily have access to stdin, stdout and stderr. |
| 2334 |
|
* |
| 2335 |
|
* NOTE: These channels are not added to the interpreter by the |
| 2336 |
|
* Tcl_CreateInterp call, but may be added later, by another I/O |
| 2337 |
|
* operation. We want to ensure that the interpreter does not have |
| 2338 |
|
* these channels even if it is being made safe after being used for |
| 2339 |
|
* some time.. |
| 2340 |
|
*/ |
| 2341 |
|
|
| 2342 |
|
chan = Tcl_GetStdChannel(TCL_STDIN); |
| 2343 |
|
if (chan != (Tcl_Channel) NULL) { |
| 2344 |
|
Tcl_UnregisterChannel(interp, chan); |
| 2345 |
|
} |
| 2346 |
|
chan = Tcl_GetStdChannel(TCL_STDOUT); |
| 2347 |
|
if (chan != (Tcl_Channel) NULL) { |
| 2348 |
|
Tcl_UnregisterChannel(interp, chan); |
| 2349 |
|
} |
| 2350 |
|
chan = Tcl_GetStdChannel(TCL_STDERR); |
| 2351 |
|
if (chan != (Tcl_Channel) NULL) { |
| 2352 |
|
Tcl_UnregisterChannel(interp, chan); |
| 2353 |
|
} |
| 2354 |
|
|
| 2355 |
|
return TCL_OK; |
| 2356 |
|
} |
| 2357 |
|
|
| 2358 |
|
/* End of tclinterp.c */ |
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