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time.c: ignore invalid data

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* time.c (time_mload): ignore invalid offset and zone.
  [ruby-core:56648] [Bug #8795]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-08-17 13:20:50 +00:00
parent 61313ade46
commit 5685abe6c3
3 changed files with 57 additions and 5 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Sat Aug 17 22:20:47 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* time.c (time_mload): ignore invalid offset and zone.
[ruby-core:56648] [Bug #8795]
Sat Aug 17 20:11:49 2013 Benoit Daloze <eregontp@gmail.com>
* process.c: [DOC] MACH_ABSOLUTE_TIME_CLOCK_MONOTONIC is an

37
test/ruby/test_time.rb
View file

@ -312,6 +312,43 @@ class TestTime < Test::Unit::TestCase
"[ruby-dev:44827] [Bug #5586]")
end
def in_timezone(zone)
orig_zone = ENV['TZ']
ENV['TZ'] = 'UTC'
yield
ensure
ENV['TZ'] = orig_zone
end
Bug8795 = '[ruby-core:56648] [Bug #8795]'
def test_marshal_broken_offset
data = "\x04\bIu:\tTime\r\xEFF\x1C\x80\x00\x00\x00\x00\x06:\voffset"
t1 = t2 = nil
in_timezone('UTC') do
assert_nothing_raised(TypeError, ArgumentError, Bug8795) do
t1 = Marshal.load(data + "T")
t2 = Marshal.load(data + "\"\x0ebadoffset")
end
assert_equal(0, t1.utc_offset)
assert_equal(0, t2.utc_offset)
end
end
def test_marshal_broken_zone
data = "\x04\bIu:\tTime\r\xEFF\x1C\x80\x00\x00\x00\x00\x06:\tzone"
t1 = t2 = nil
in_timezone('UTC') do
assert_nothing_raised(TypeError, ArgumentError, Bug8795) do
t1 = Marshal.load(data + "T")
t2 = Marshal.load(data + "\"\b\0\0\0")
end
assert_equal('UTC', t1.zone)
assert_equal('UTC', t2.zone)
end
end
def test_at3
t2000 = get_t2000
assert_equal(t2000, Time.at(t2000))

20
time.c
View file

@ -754,7 +754,8 @@ static VALUE time_utc_offset _((VALUE));
static int obj2int(VALUE obj);
static VALUE obj2vint(VALUE obj);
static int month_arg(VALUE arg);
static void validate_utc_offset(VALUE utc_offset);
static VALUE validate_utc_offset(VALUE utc_offset);
static VALUE validate_zone_name(VALUE zone_name);
static void validate_vtm(struct vtm *vtm);
static int obj2subsecx(VALUE obj, VALUE *subsecx);
@ -2581,11 +2582,19 @@ month_arg(VALUE arg)
return mon;
}
static void
static VALUE
validate_utc_offset(VALUE utc_offset)
{
if (le(utc_offset, INT2FIX(-86400)) || ge(utc_offset, INT2FIX(86400)))
rb_raise(rb_eArgError, "utc_offset out of range");
return utc_offset;
}
static VALUE
validate_zone_name(VALUE zone_name)
{
StringValueCStr(zone_name);
return zone_name;
}
static void
@ -4702,8 +4711,9 @@ time_mload(VALUE time, VALUE str)
get_attr(nano_num, {});
get_attr(nano_den, {});
get_attr(submicro, {});
get_attr(offset, validate_utc_offset(offset));
get_attr(zone, {});
get_attr(offset, (offset = rb_rescue(validate_utc_offset, offset, NULL, Qnil)));
get_attr(zone, (zone = rb_rescue(validate_zone_name, zone, NULL, Qnil)));
#undef get_attr
rb_copy_generic_ivar(time, str);
@ -4789,7 +4799,7 @@ end_submicro: ;
time_fixoff(time);
}
if (!NIL_P(zone)) {
tobj->vtm.zone = StringValueCStr(zone);
tobj->vtm.zone = RSTRING_PTR(zone);
}
return time;