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fix UTF-32 valid_encoding?

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* enc/utf_32be.c (utf32be_mbc_enc_len): check arguments precisely.
  [ruby-core:79966] [Bug #13292]

* enc/utf_32le.c (utf32le_mbc_enc_len): ditto.

* regenc.h (UNICODE_VALID_CODEPOINT_P): predicate for valid
  Unicode codepoints.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57816 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-03-09 02:04:10 +00:00
parent e65c9bd177
commit 4171ed6c21
4 changed files with 101 additions and 6 deletions
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18
enc/utf_32be.c
View file

@ -30,11 +30,23 @@
#include "regenc.h"
#include "iso_8859.h"
static OnigCodePoint utf32be_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc);
static int
utf32be_mbc_enc_len(const UChar* p ARG_UNUSED, const OnigUChar* e ARG_UNUSED,
OnigEncoding enc ARG_UNUSED)
utf32be_mbc_enc_len(const UChar* p ARG_UNUSED, const OnigUChar* e,
OnigEncoding enc)
{
return 4;
if (e < p) {
return ONIGENC_CONSTRUCT_MBCLEN_INVALID();
}
else if (e-p < 4) {
return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(4-(int)(e-p));
}
else {
OnigCodePoint c = utf32be_mbc_to_code(p, e, enc);
if (!UNICODE_VALID_CODEPOINT_P(c))
return ONIGENC_CONSTRUCT_MBCLEN_INVALID();
return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4);
}
}
static int

18
enc/utf_32le.c
View file

@ -30,11 +30,23 @@
#include "regenc.h"
#include "iso_8859.h"
static OnigCodePoint utf32le_mbc_to_code(const UChar* p, const UChar* end, OnigEncoding enc);
static int
utf32le_mbc_enc_len(const UChar* p ARG_UNUSED, const OnigUChar* e ARG_UNUSED,
OnigEncoding enc ARG_UNUSED)
utf32le_mbc_enc_len(const UChar* p ARG_UNUSED, const OnigUChar* e,
OnigEncoding enc)
{
return 4;
if (e < p) {
return ONIGENC_CONSTRUCT_MBCLEN_INVALID();
}
else if (e-p < 4) {
return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(4-(int)(e-p));
}
else {
OnigCodePoint c = utf32le_mbc_to_code(p, e, enc);
if (!UNICODE_VALID_CODEPOINT_P(c))
return ONIGENC_CONSTRUCT_MBCLEN_INVALID();
return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4);
}
}
static int

3
regenc.h
View file

@ -186,6 +186,9 @@ ONIG_EXTERN int onigenc_unicode_apply_all_case_fold(OnigCaseFoldType flag, OnigA
#define UTF16_IS_SURROGATE_FIRST(c) (((c) & 0xfc) == 0xd8)
#define UTF16_IS_SURROGATE_SECOND(c) (((c) & 0xfc) == 0xdc)
#define UTF16_IS_SURROGATE(c) (((c) & 0xf8) == 0xd8)
#define UNICODE_VALID_CODEPOINT_P(c) ( \
((c) <= 0x10ffff) && \
!((c) < 0x10000 && UTF16_IS_SURROGATE((c) >> 8)))
#define ONIGENC_ISO_8859_1_TO_LOWER_CASE(c) \
OnigEncISO_8859_1_ToLowerCaseTable[c]

68
test/ruby/enc/test_utf32.rb
View file

@ -90,5 +90,73 @@ EOT
assert_equal(sl, "a".ord.chr("utf-32le"))
assert_equal(sb, "a".ord.chr("utf-32be"))
end
def test_utf32be_valid_encoding
all_assertions do |a|
[
"\x00\x00\x00\x00",
"\x00\x00\x00a",
"\x00\x00\x30\x40",
"\x00\x00\xd7\xff",
"\x00\x00\xe0\x00",
"\x00\x00\xff\xff",
"\x00\x10\xff\xff",
].each {|s|
s.force_encoding("utf-32be")
a.for(s) {
assert_predicate(s, :valid_encoding?, "#{encdump s}.valid_encoding?")
}
}
[
"a",
"\x00a",
"\x00\x00a",
"\x00\x00\xd8\x00",
"\x00\x00\xdb\xff",
"\x00\x00\xdc\x00",
"\x00\x00\xdf\xff",
"\x00\x11\x00\x00",
].each {|s|
s.force_encoding("utf-32be")
a.for(s) {
assert_not_predicate(s, :valid_encoding?, "#{encdump s}.valid_encoding?")
}
}
end
end
def test_utf32le_valid_encoding
all_assertions do |a|
[
"\x00\x00\x00\x00",
"a\x00\x00\x00",
"\x40\x30\x00\x00",
"\xff\xd7\x00\x00",
"\x00\xe0\x00\x00",
"\xff\xff\x00\x00",
"\xff\xff\x10\x00",
].each {|s|
s.force_encoding("utf-32le")
a.for(s) {
assert_predicate(s, :valid_encoding?, "#{encdump s}.valid_encoding?")
}
}
[
"a",
"a\x00",
"a\x00\x00",
"\x00\xd8\x00\x00",
"\xff\xdb\x00\x00",
"\x00\xdc\x00\x00",
"\xff\xdf\x00\x00",
"\x00\x00\x11\x00",
].each {|s|
s.force_encoding("utf-32le")
a.for(s) {
assert_not_predicate(s, :valid_encoding?, "#{encdump s}.valid_encoding?")
}
}
end
end
end