/* taint.c
*
- * Copyright (c) 1997-2003, Larry Wall
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* liar, Saruman, and a corrupter of men's hearts." --Theoden
*/
+/* This file contains a few functions for handling data tainting in Perl
+ */
+
#include "EXTERN.h"
#define PERL_IN_TAINT_C
#include "perl.h"
NULL
};
+ /* Don't bother if there's no *ENV glob */
if (!PL_envgv)
return;
+ /* If there's no %ENV hash of if it's not magical, croak, because
+ * it probably doesn't reflect the actual environment */
+ if (!GvHV(PL_envgv) || !(SvRMAGICAL(GvHV(PL_envgv))
+ && mg_find((SV*)GvHV(PL_envgv), PERL_MAGIC_env))) {
+ bool was_tainted = PL_tainted;
+ char *name = GvENAME(PL_envgv);
+ PL_tainted = TRUE;
+ if (strEQ(name,"ENV"))
+ /* hash alias */
+ taint_proper("%%ENV is aliased to %s%s", "another variable");
+ else
+ /* glob alias: report it in the error message */
+ taint_proper("%%ENV is aliased to %%%s%s", name);
+ /* this statement is reached under -t or -U */
+ PL_tainted = was_tainted;
+ }
#ifdef VMS
{