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Web Mar 5 17:43:43 2008 Martin Duerst <duerst@it.aoyama.ac.jp>

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* transcode.c (transcode_loop): Adjusted detection of invalid
	  (ill-formed) UTF-8 sequences. Fixing potential security issue, see
	  http://www.unicode.org/versions/Unicode5.1.0/#Notable_Changes.

	* test/ruby/test_transcode.rb: Added two tests for above fix.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15692 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
duerst 2008-03-05 08:45:51 +00:00
parent 39787ea14d
commit 08631278ad
3 changed files with 29 additions and 10 deletions
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24
transcode.c
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@ -177,8 +177,10 @@ transcode_loop(unsigned char **in_pos, unsigned char **out_pos,
if (from_utf8) {
if ((next_byte&0xC0) == 0x80)
next_byte -= 0x80;
else
else {
in_p--; /* may need to add more code later to revert other things */
goto invalid;
}
}
next_table = (const BYTE_LOOKUP *)next_info;
goto follow_byte;
@ -390,13 +392,15 @@ str_transcode(int argc, VALUE *argv, VALUE *self)
/*
* call-seq:
* str.encode!(encoding) => str
* str.encode!(to_encoding, from_encoding) => str
* str.encode!(encoding [, options] ) => str
* str.encode!(to_encoding, from_encoding [, options] ) => str
*
* With one argument, transcodes the contents of <i>str</i> from
* The first form transcodes the contents of <i>str</i> from
* str.encoding to +encoding+.
* With two arguments, transcodes the contents of <i>str</i> from
* The second form transcodes the contents of <i>str</i> from
* from_encoding to to_encoding.
* The options Hash gives details for conversion. See String#encode
* for details.
* Returns the string even if no changes were made.
*/
@ -414,13 +418,15 @@ rb_str_transcode_bang(int argc, VALUE *argv, VALUE str)
/*
* call-seq:
* str.encode(encoding) => str
* str.encode(to_encoding, from_encoding) => str
* str.encode(encoding [, options] ) => str
* str.encode(to_encoding, from_encoding [, options] ) => str
*
* With one argument, returns a copy of <i>str</i> transcoded
* The first form returns a copy of <i>str</i> transcoded
* to encoding +encoding+.
* With two arguments, returns a copy of <i>str</i> transcoded
* The second form returns a copy of <i>str</i> transcoded
* from from_encoding to to_encoding.
* The options Hash gives details for conversion. Details
* to be added.
*/
static VALUE