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wctype: out of bound access in POSIX locale.

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The POSIX locale has gLocaleRoster = NULL and relies on the non-wide
version of the implementation. However it doesn't check that the
characters are actually in range which leads to out of bound access and
crashes in __isctype.

Fixes #11322.
This commit is contained in:
Adrien Destugues
2014-10-06 16:54:31 +02:00
parent aa1e906441
commit 7554bc9a19
1 changed files with 25 additions and 58 deletions
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src/system/libroot/posix/locale/wctype.cpp
+25 -58
View File
@@ -23,133 +23,100 @@ using BPrivate::Libroot::gLocaleBackend;
* function.
*/
int
iswctype(wint_t wc, wctype_t charClass)
{
if (gLocaleBackend == NULL) {
if (wc < 0 || wc > 127)
return 0;
return __isctype(wc, charClass);
}
return gLocaleBackend->IsWCType(wc, charClass);
}
int
iswalnum(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISalnum);
return gLocaleBackend->IsWCType(wc, _ISalnum);
return iswctype(wc, _ISalnum);
}
int
iswalpha(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISalpha);
return gLocaleBackend->IsWCType(wc, _ISalpha);
return iswctype(wc, _ISalpha);
}
int
iswblank(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISblank);
return gLocaleBackend->IsWCType(wc, _ISblank);
return iswctype(wc, _ISblank);
}
int
iswcntrl(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _IScntrl);
return gLocaleBackend->IsWCType(wc, _IScntrl);
return iswctype(wc, _IScntrl);
}
int
iswdigit(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISdigit);
return gLocaleBackend->IsWCType(wc, _ISdigit);
return iswctype(wc, _ISdigit);
}
int
iswgraph(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISgraph);
return gLocaleBackend->IsWCType(wc, _ISgraph);
return iswctype(wc, _ISgraph);
}
int
iswlower(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISlower);
return gLocaleBackend->IsWCType(wc, _ISlower);
return iswctype(wc, _ISlower);
}
int
iswprint(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISprint);
return gLocaleBackend->IsWCType(wc, _ISprint);
return iswctype(wc, _ISprint);
}
int
iswpunct(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISpunct);
return gLocaleBackend->IsWCType(wc, _ISpunct);
return iswctype(wc, _ISpunct);
}
int
iswspace(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISspace);
return gLocaleBackend->IsWCType(wc, _ISspace);
return iswctype(wc, _ISspace);
}
int
iswupper(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISupper);
return gLocaleBackend->IsWCType(wc, _ISupper);
return iswctype(wc, _ISupper);
}
int
iswxdigit(wint_t wc)
{
if (gLocaleBackend == NULL)
return __isctype(wc, _ISxdigit);
return gLocaleBackend->IsWCType(wc, _ISxdigit);
}
int
iswctype(wint_t wc, wctype_t charClass)
{
if (gLocaleBackend == NULL)
return __isctype(wc, charClass);
return gLocaleBackend->IsWCType(wc, charClass);
return iswctype(wc, _ISxdigit);
}