kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

HCRYPTPROV is not a HANDLE

Browse source 
Even though it is called "handle" and prefixed with "H", and its
value looks like a handle.
This commit is contained in:
Nobuyoshi Nakada 2021-09-24 11:36:42 +09:00
parent 61aedb28ef
commit 0eb679f70c
No known key found for this signature in database
GPG key ID: 7CD2805BFA3770C6
1 changed files with 14 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
random.c
View file

@ -544,11 +544,18 @@ fill_random_bytes_syscall(void *buf, size_t size, int unused)
#endif
}
#elif defined(_WIN32)
STATIC_ASSERT(sizeof_HCRYPTPROV, sizeof(HCRYPTPROV) == sizeof(size_t));
/* Although HCRYPTPROV is not a HANDLE, it looks like
* INVALID_HANDLE_VALUE is not a valid value */
static const HCRYPTPROV INVALID_HCRYPTPROV = (HCRYPTPROV)INVALID_HANDLE_VALUE;
static void
release_crypt(void *p)
{
HCRYPTPROV prov = (HCRYPTPROV)ATOMIC_PTR_EXCHANGE(*(HCRYPTPROV *)p, INVALID_HANDLE_VALUE);
if (prov && prov != (HCRYPTPROV)INVALID_HANDLE_VALUE) {
HCRYPTPROV *ptr = p;
HCRYPTPROV prov = (HCRYPTPROV)ATOMIC_SIZE_EXCHANGE(*ptr, INVALID_HCRYPTPROV);
if (prov && prov != INVALID_HCRYPTPROV) {
CryptReleaseContext(prov, 0);
}
}
@ -560,24 +567,24 @@ fill_random_bytes_syscall(void *seed, size_t size, int unused)
HCRYPTPROV prov = perm_prov, old_prov;
if (!prov) {
if (!CryptAcquireContext(&prov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) {
prov = (HCRYPTPROV)INVALID_HANDLE_VALUE;
prov = INVALID_HCRYPTPROV;
}
old_prov = (HCRYPTPROV)ATOMIC_PTR_CAS(perm_prov, 0, prov);
old_prov = (HCRYPTPROV)ATOMIC_SIZE_CAS(perm_prov, 0, prov);
if (LIKELY(!old_prov)) { /* no other threads acquired */
if (prov != (HCRYPTPROV)INVALID_HANDLE_VALUE) {
if (prov != INVALID_HCRYPTPROV) {
#undef RUBY_UNTYPED_DATA_WARNING
#define RUBY_UNTYPED_DATA_WARNING 0
rb_gc_register_mark_object(Data_Wrap_Struct(0, 0, release_crypt, &perm_prov));
}
}
else { /* another thread acquired */
if (prov != (HCRYPTPROV)INVALID_HANDLE_VALUE) {
if (prov != INVALID_HCRYPTPROV) {
CryptReleaseContext(prov, 0);
}
prov = old_prov;
}
}
if (prov == (HCRYPTPROV)INVALID_HANDLE_VALUE) return -1;
if (prov == INVALID_HCRYPTPROV) return -1;
CryptGenRandom(prov, size, seed);
return 0;
}