/*
 * tkAppInit.c --
 *
 *	Provides a default version of the Tcl_AppInit procedure for use in
 *	wish and similar Tk-based applications.
 *
 * Copyright (c) 1993 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id$
 */

#include "tk.h"
#include "locale.h"

#include <stdio.h>
#include <stdlib.h>

#ifdef __APPLE__
#include <CoreFoundation/CoreFoundation.h>
#endif /* __APPLE__ */

#ifdef TK_TEST
extern int		Tktest_Init _ANSI_ARGS_((Tcl_Interp *interp));
#endif /* TK_TEST */

/*
 *----------------------------------------------------------------------
 *
 * main --
 *
 *	This is the main program for the application.
 *
 * Results:
 *	None: Tk_Main never returns here, so this procedure never returns
 *	either.
 *
 * Side effects:
 *	Whatever the application does.
 *
 *----------------------------------------------------------------------
 */

int
main(
    int argc,			/* Number of command-line arguments. */
    char **argv)		/* Values of command-line arguments. */
{
#ifdef __APPLE__
    /*
     * rdar://90261888 (App Sandbox Escape in Wish.app Using TCL_LIBRARY)
     *
     * Unset TCL_LIBRARY for Wish.app; as it's trusted by Sandbox by virtue
     * of living in /System, TCL_LIBRARY could be used to force loading of
     * arbitrary code from another app.
     *
     * It's important that we do this before calling into Tk_Main() below,
     * as that will call into TclSetupEnv() which bootstraps the environ
     * vector into the interpreter.
     */
    CFBundleRef bundleRef = CFBundleGetMainBundle();
    if (bundleRef) {
	CFStringRef identifier = CFBundleGetIdentifier(bundleRef);
	CFStringRef wishIdentifier = CFSTR("com.tcltk.wish");

	if (identifier &&
	    (CFStringCompare(identifier, wishIdentifier, 0) == kCFCompareEqualTo)) {
	    (void)unsetenv("TCL_LIBRARY");
	}
    }
#endif /* __APPLE__ */

    /*
     * The following #if block allows you to change the AppInit function by
     * using a #define of TCL_LOCAL_APPINIT instead of rewriting this entire
     * file. The #if checks for that #define and uses Tcl_AppInit if it
     * doesn't exist.
     */

#ifndef TK_LOCAL_APPINIT
#define TK_LOCAL_APPINIT Tcl_AppInit
#endif
    extern int TK_LOCAL_APPINIT _ANSI_ARGS_((Tcl_Interp *interp));

    /*
     * The following #if block allows you to change how Tcl finds the startup
     * script, prime the library or encoding paths, fiddle with the argv,
     * etc., without needing to rewrite Tk_Main()
     */

#ifdef TK_LOCAL_MAIN_HOOK
    extern int TK_LOCAL_MAIN_HOOK _ANSI_ARGS_((int *argc, char ***argv));
    TK_LOCAL_MAIN_HOOK(&argc, &argv);
#endif

    Tk_Main(argc, argv, TK_LOCAL_APPINIT);
    return 0;			/* Needed only to prevent compiler warning. */
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_AppInit --
 *
 *	This procedure performs application-specific initialization. Most
 *	applications, especially those that incorporate additional packages,
 *	will have their own version of this procedure.
 *
 * Results:
 *	Returns a standard Tcl completion code, and leaves an error message in
 *	the interp's result if an error occurs.
 *
 * Side effects:
 *	Depends on the startup script.
 *
 *----------------------------------------------------------------------
 */

int
Tcl_AppInit(
    Tcl_Interp *interp)		/* Interpreter for application. */
{
    if (Tcl_Init(interp) == TCL_ERROR) {
	return TCL_ERROR;
    }
    if (Tk_Init(interp) == TCL_ERROR) {
	return TCL_ERROR;
    }
    Tcl_StaticPackage(interp, "Tk", Tk_Init, Tk_SafeInit);
#ifdef TK_TEST
    if (Tktest_Init(interp) == TCL_ERROR) {
	return TCL_ERROR;
    }
    Tcl_StaticPackage(interp, "Tktest", Tktest_Init,
            (Tcl_PackageInitProc *) NULL);
#endif /* TK_TEST */

    /*
     * Call the init procedures for included packages. Each call should look
     * like this:
     *
     * if (Mod_Init(interp) == TCL_ERROR) {
     *     return TCL_ERROR;
     * }
     *
     * where "Mod" is the name of the module.
     */

    /*
     * Call Tcl_CreateCommand for application-specific commands, if they
     * weren't already created by the init procedures called above.
     */

    /*
     * Specify a user-specific startup file to invoke if the application is
     * run interactively. Typically the startup file is "~/.apprc" where "app"
     * is the name of the application. If this line is deleted then no user-
     * -specific startup file will be run under any conditions.
     */

    Tcl_SetVar(interp, "tcl_rcFileName", "~/.wishrc", TCL_GLOBAL_ONLY);
    return TCL_OK;
}

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */