Mirrors_Framework/mujs
1
0
Fork 0
mirror of https://github.com/ccxvii/mujs.git synced 2026-09-23 08:43:34 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Check hex string escapes so we don't read past the end of the string.

Browse Source
This commit is contained in:
Tor Andersson
2013-12-27 18:31:17 +01:00
parent 294a803552
commit e01fe424ab
1 changed files with 9 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
js-lex.c
+9 -9
View File
@@ -294,20 +294,20 @@ static inline js_Token lexnumber(js_State *J, const char **sp)
static inline int lexescape(const char **sp)
{
int c = GET();
int x, y, z, w;
int x = 0;
switch (c) {
case '0': return 0;
case 'u':
x = tohex(GET());
y = tohex(GET());
z = tohex(GET());
w = tohex(GET());
return (x << 12) | (y << 8) | (z << 4) | w;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK() << 12;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK() << 8;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK() << 4;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK();
return x;
case 'x':
x = tohex(GET());
y = tohex(GET());
return (x << 4) | y;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK() << 4;
if (!ishex(PEEK())) return x; else x |= NEXTPEEK();
return x;
case '\'': return '\'';
case '"': return '"';
case '\\': return '\\';