* safe.c (rb_set_safe_level, safe_setter): raise an ArgumentError

  when $SAFE is set to 4.  $SAFE=4 is now obsolete.
  [ruby-core:55222] [Feature #8468]

* object.c (rb_obj_untrusted, rb_obj_untrust, rb_obj_trust):
  Kernel#untrusted?, untrust, and trust are now deprecated.
  Their behavior is same as tainted?, taint, and untaint,
  respectively.

* include/ruby/ruby.h (OBJ_UNTRUSTED, OBJ_UNTRUST): OBJ_UNTRUSTED()
  and OBJ_UNTRUST() are aliases of OBJ_TAINTED() and OBJ_TAINT(),
  respectively.

* array.c, class.c, debug.c, dir.c, encoding.c, error.c, eval.c,
  ext/curses/curses.c, ext/dbm/dbm.c, ext/dl/cfunc.c,
  ext/dl/cptr.c, ext/dl/dl.c, ext/etc/etc.c, ext/fiddle/fiddle.c,
  ext/fiddle/pointer.c, ext/gdbm/gdbm.c, ext/readline/readline.c,
  ext/sdbm/init.c, ext/socket/ancdata.c, ext/socket/basicsocket.c,
  ext/socket/socket.c, ext/socket/udpsocket.c,
  ext/stringio/stringio.c, ext/syslog/syslog.c, ext/tk/tcltklib.c,
  ext/win32ole/win32ole.c, file.c, gc.c, hash.c, io.c, iseq.c,
  load.c, marshal.c, object.c, proc.c, process.c, random.c, re.c,
  safe.c, string.c, thread.c, transcode.c, variable.c,
  vm_insnhelper.c, vm_method.c, vm_trace.c: remove code for
  $SAFE=4.

* test/dl/test_dl2.rb, test/erb/test_erb.rb,
  test/readline/test_readline.rb,
  test/readline/test_readline_history.rb, test/ruby/test_alias.rb,
  test/ruby/test_array.rb, test/ruby/test_dir.rb,
  test/ruby/test_encoding.rb, test/ruby/test_env.rb,
  test/ruby/test_eval.rb, test/ruby/test_exception.rb,
  test/ruby/test_file_exhaustive.rb, test/ruby/test_hash.rb,
  test/ruby/test_io.rb, test/ruby/test_method.rb,
  test/ruby/test_module.rb, test/ruby/test_object.rb,
  test/ruby/test_pack.rb, test/ruby/test_rand.rb,
  test/ruby/test_regexp.rb, test/ruby/test_settracefunc.rb,
  test/ruby/test_struct.rb, test/ruby/test_thread.rb,
  test/ruby/test_time.rb: remove tests for $SAFE=4.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41259 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 8 deletions

diff --git a/safe.c b/safe.c
index cc07513c64..2ebb9dae79 100644
--- a/safe.c
+++ b/safe.c
@@ -14,10 +14,9 @@
    1 - no dangerous operation by tainted value
    2 - process/file operations prohibited
    3 - all generated objects are tainted
-   4 - no global (non-tainted) variable modification/no direct output
 */
 
-#define SAFE_LEVEL_MAX 4
+#define SAFE_LEVEL_MAX 3
 
 #include "ruby/ruby.h"
 #include "vm_core.h"
@@ -43,7 +42,7 @@ rb_set_safe_level(int level)
 
     if (level > th->safe_level) {
 	if (level > SAFE_LEVEL_MAX) {
-	    level = SAFE_LEVEL_MAX;
+	    rb_raise(rb_eArgError, "$SAFE=4 is obsolete");
 	}
 	th->safe_level = level;
     }
@@ -67,10 +66,10 @@ safe_setter(VALUE val)
 		 th->safe_level, level);
     }
     if (level == 3) {
-	rb_warning("$SAFE=3 does no sandboxing; you might want to use $SAFE=4");
+	rb_warning("$SAFE=3 does no sandboxing");
     }
     if (level > SAFE_LEVEL_MAX) {
-	level = SAFE_LEVEL_MAX;
+	rb_raise(rb_eArgError, "$SAFE=4 is obsolete");
     }
     th->safe_level = level;
 }
@@ -94,8 +93,6 @@ rb_secure(int level)
 void
 rb_secure_update(VALUE obj)
 {
-    if (!OBJ_TAINTED(obj))
-	rb_secure(4);
 }
 
 void
@@ -117,7 +114,6 @@ rb_check_safe_obj(VALUE x)
     if (rb_safe_level() > 0 && OBJ_TAINTED(x)) {
 	rb_insecure_operation();
     }
-    rb_secure(4);
 }
 
 void