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Don't allow mixed escape

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61381 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2017-12-21 05:09:17 +00:00
parent 188d85934b
commit 05d1d29d1f
2 changed files with 12 additions and 2 deletions
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12
string.c
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@ -6107,7 +6107,7 @@ unescape_ascii(unsigned int c)
}
static void
undump_after_backslash(VALUE undumped, const char **ss, const char *s_end, rb_encoding **penc, bool *utf8)
undump_after_backslash(VALUE undumped, const char **ss, const char *s_end, rb_encoding **penc, bool *utf8, bool *binary)
{
const char *s = *ss;
unsigned int c;
@ -6136,6 +6136,9 @@ undump_after_backslash(VALUE undumped, const char **ss, const char *s_end, rb_en
s++;
break;
case 'u':
if (*binary) {
rb_raise(rb_eRuntimeError, "hex escape and Unicode escape are mixed");
}
*utf8 = true;
if (++s >= s_end) {
rb_raise(rb_eRuntimeError, "invalid Unicode escape");
@ -6188,6 +6191,10 @@ undump_after_backslash(VALUE undumped, const char **ss, const char *s_end, rb_en
}
break;
case 'x':
if (*utf8) {
rb_raise(rb_eRuntimeError, "hex escape and Unicode escape are mixed");
}
*binary = true;
if (++s >= s_end) {
rb_raise(rb_eRuntimeError, "invalid hex escape");
}
@ -6226,6 +6233,7 @@ str_undump(VALUE str)
rb_encoding *enc = rb_enc_get(str);
VALUE undumped = rb_enc_str_new(s, 0L, enc);
bool utf8 = false;
bool binary = false;
int w;
rb_must_asciicompat(str);
@ -6296,7 +6304,7 @@ str_undump(VALUE str)
if (s >= s_end) {
rb_raise(rb_eRuntimeError, "invalid escape");
}
undump_after_backslash(undumped, &s, s_end, &enc, &utf8);
undump_after_backslash(undumped, &s, s_end, &enc, &utf8, &binary);
}
else {
rb_str_cat(undumped, s++, 1);

2
test/ruby/test_string.rb
View file

@ -784,6 +784,8 @@ CODE
assert_equal('\#{', '"\\\\\#{"'.undump)
assert_raise(RuntimeError) { S('\u3042').undump }
assert_raise(RuntimeError) { S('"\x82\xA0\u3042"'.force_encoding("SJIS")).undump }
assert_raise(RuntimeError) { S('"\u3042\x82\xA0"'.force_encoding("SJIS")).undump }
assert_raise(RuntimeError) { S('"".force_encoding()').undump }
assert_raise(RuntimeError) { S('"".force_encoding("').undump }
assert_raise(RuntimeError) { S('"".force_encoding("UNKNOWN")').undump }