From 3043170b14875ce53f3a951d665279b12c2c63a8 Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 7 Jul 2000 03:20:53 +0000
Subject: matz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@819 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 time.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'time.c')

diff --git a/time.c b/time.c
index 77257eb030..32b3f0b794 100644
--- a/time.c
+++ b/time.c
@@ -535,6 +535,15 @@ time_clone(time)
     return clone;
 }
 
+static void
+time_modify(time)
+    VALUE time;
+{
+    if (OBJ_FROZEN(time)) rb_error_frozen("Time");
+    if (!OBJ_TAINTED(time) && rb_safe_level() >= 4)
+	rb_raise(rb_eSecurityError, "Insecure: can't modify Time");
+}
+
 static VALUE
 time_localtime(time)
     VALUE time;
@@ -547,6 +556,7 @@ time_localtime(time)
     if (tobj->tm_got && !tobj->gmt) {
 	return time;
     }
+    time_modify(time);
     t = tobj->tv.tv_sec;
     tm_tmp = localtime(&t);
     tobj->tm = *tm_tmp;
@@ -567,6 +577,7 @@ time_gmtime(time)
     if (tobj->tm_got && tobj->gmt) {
 	return time;
     }
+    time_modify(time);
     t = tobj->tv.tv_sec;
     tm_tmp = gmtime(&t);
     tobj->tm = *tm_tmp;
-- 
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