[PATCH 1/5] dssenh: Implement CPAcquireContext and CPReleaseContext.
Hans Leidekker
hans at codeweavers.com
Fri Oct 9 05:45:56 CDT 2020
Signed-off-by: Hans Leidekker <hans at codeweavers.com>
---
dlls/dssenh/Makefile.in | 1 +
dlls/dssenh/main.c | 256 ++++++++++++++++++++++++++++++++++++-
dlls/dssenh/tests/dssenh.c | 42 ++++++
3 files changed, 297 insertions(+), 2 deletions(-)
diff --git a/dlls/dssenh/Makefile.in b/dlls/dssenh/Makefile.in
index 8015768f99b..67b0d6a141c 100644
--- a/dlls/dssenh/Makefile.in
+++ b/dlls/dssenh/Makefile.in
@@ -1,4 +1,5 @@
MODULE = dssenh.dll
+IMPORTS = bcrypt crypt32 advapi32
EXTRADLLFLAGS = -mno-cygwin
diff --git a/dlls/dssenh/main.c b/dlls/dssenh/main.c
index 5aa885c8b86..32c31a48a8d 100644
--- a/dlls/dssenh/main.c
+++ b/dlls/dssenh/main.c
@@ -22,23 +22,275 @@
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
+#include "winreg.h"
+#include "bcrypt.h"
#include "objbase.h"
#include "rpcproxy.h"
#include "wine/debug.h"
+#include "wine/heap.h"
static HINSTANCE instance;
WINE_DEFAULT_DEBUG_CHANNEL(dssenh);
+#define MAGIC_KEY (('K' << 24) | ('E' << 16) | ('Y' << 8) | '0')
+struct key
+{
+ DWORD magic;
+ DWORD algid;
+ DWORD flags;
+ BCRYPT_ALG_HANDLE alg_handle;
+ BCRYPT_KEY_HANDLE handle;
+};
+
+#define MAGIC_CONTAINER (('C' << 24) | ('O' << 16) | ('N' << 8) | 'T')
+struct container
+{
+ DWORD magic;
+ DWORD flags;
+ struct key *exch_key;
+ struct key *sign_key;
+ char name[MAX_PATH];
+};
+
+static const char dss_path_fmt[] = "Software\\Wine\\Crypto\\DSS\\%s";
+
+static BOOL create_container_regkey( struct container *container, REGSAM sam, HKEY *hkey )
+{
+ char path[sizeof(dss_path_fmt) + MAX_PATH];
+ HKEY rootkey;
+
+ sprintf( path, dss_path_fmt, container->name );
+
+ if (container->flags & CRYPT_MACHINE_KEYSET)
+ rootkey = HKEY_LOCAL_MACHINE;
+ else
+ rootkey = HKEY_CURRENT_USER;
+
+ /* @@ Wine registry key: HKLM\Software\Wine\Crypto\DSS */
+ /* @@ Wine registry key: HKCU\Software\Wine\Crypto\DSS */
+ return !RegCreateKeyExA( rootkey, path, 0, NULL, REG_OPTION_NON_VOLATILE, sam, NULL, hkey, NULL );
+}
+
+static struct container *create_key_container( const char *name, DWORD flags )
+{
+ struct container *ret;
+
+ if (!(ret = heap_alloc_zero( sizeof(*ret) ))) return NULL;
+ ret->magic = MAGIC_CONTAINER;
+ ret->flags = flags;
+ if (name) strcpy( ret->name, name );
+
+ if (!(flags & CRYPT_VERIFYCONTEXT))
+ {
+ HKEY hkey;
+ if (create_container_regkey( ret, KEY_WRITE, &hkey )) RegCloseKey( hkey );
+ }
+ return ret;
+}
+
+static BOOL open_container_regkey( const char *name, DWORD flags, REGSAM access, HKEY *hkey )
+{
+ char path[sizeof(dss_path_fmt) + MAX_PATH];
+ HKEY rootkey;
+
+ sprintf( path, dss_path_fmt, name );
+
+ if (flags & CRYPT_MACHINE_KEYSET)
+ rootkey = HKEY_LOCAL_MACHINE;
+ else
+ rootkey = HKEY_CURRENT_USER;
+
+ /* @@ Wine registry key: HKLM\Software\Wine\Crypto\DSS */
+ /* @@ Wine registry key: HKCU\Software\Wine\Crypto\DSS */
+ return !RegOpenKeyExA( rootkey, path, 0, access, hkey );
+}
+
+static const WCHAR *map_keyspec_to_keypair_name( DWORD keyspec )
+{
+ const WCHAR *name;
+
+ switch (keyspec)
+ {
+ case AT_KEYEXCHANGE:
+ name = L"KeyExchangeKeyPair";
+ break;
+ case AT_SIGNATURE:
+ name = L"SignatureKeyPair";
+ break;
+ default:
+ ERR( "invalid key spec %u\n", keyspec );
+ return NULL;
+ }
+ return name;
+}
+
+static struct key *create_key( ALG_ID algid, DWORD flags )
+{
+ struct key *ret;
+ const WCHAR *alg;
+
+ switch (algid)
+ {
+ case AT_SIGNATURE:
+ case CALG_DSS_SIGN:
+ alg = BCRYPT_DSA_ALGORITHM;
+ break;
+
+ default:
+ FIXME( "unhandled algorithm %08x\n", algid );
+ return NULL;
+ }
+
+ if (!(ret = heap_alloc_zero( sizeof(*ret) ))) return NULL;
+
+ ret->magic = MAGIC_KEY;
+ ret->algid = algid;
+ ret->flags = flags;
+ if (BCryptOpenAlgorithmProvider( &ret->alg_handle, alg, MS_PRIMITIVE_PROVIDER, 0 ))
+ {
+ heap_free( ret );
+ return NULL;
+ }
+ return ret;
+}
+
+static void destroy_key( struct key *key )
+{
+ if (!key) return;
+ BCryptDestroyKey( key->handle );
+ BCryptCloseAlgorithmProvider( key->alg_handle, 0 );
+ key->magic = 0;
+ heap_free( key );
+}
+
+static struct key *import_key( DWORD keyspec, BYTE *data, DWORD len )
+{
+ struct key *ret;
+
+ if (!(ret = create_key( keyspec, 0 ))) return NULL;
+
+ if (BCryptImportKeyPair( ret->alg_handle, NULL, LEGACY_DSA_V2_PRIVATE_BLOB, &ret->handle, data, len, 0 ))
+ {
+ WARN( "failed to import key\n" );
+ destroy_key( ret );
+ return NULL;
+ }
+ return ret;
+}
+
+static struct key *read_key( HKEY hkey, DWORD keyspec, DWORD flags )
+{
+ const WCHAR *value;
+ DWORD type, len;
+ BYTE *data;
+ DATA_BLOB blob_in, blob_out;
+ struct key *ret = NULL;
+
+ if (!(value = map_keyspec_to_keypair_name( keyspec ))) return NULL;
+ if (RegQueryValueExW( hkey, value, 0, &type, NULL, &len )) return NULL;
+ if (!(data = heap_alloc( len ))) return NULL;
+
+ if (!RegQueryValueExW( hkey, value, 0, &type, data, &len ))
+ {
+ blob_in.pbData = data;
+ blob_in.cbData = len;
+ if (CryptUnprotectData( &blob_in, NULL, NULL, NULL, NULL, flags, &blob_out ))
+ {
+ ret = import_key( keyspec, blob_out.pbData, blob_out.cbData );
+ LocalFree( blob_out.pbData );
+ }
+ }
+
+ heap_free( data );
+ return ret;
+}
+
+static void destroy_container( struct container *container )
+{
+ if (!container) return;
+ destroy_key( container->exch_key );
+ destroy_key( container->sign_key );
+ container->magic = 0;
+ heap_free( container );
+}
+
+static struct container *read_key_container( const char *name, DWORD flags )
+{
+ DWORD protect_flags = (flags & CRYPT_MACHINE_KEYSET) ? CRYPTPROTECT_LOCAL_MACHINE : 0;
+ struct container *ret;
+ HKEY hkey;
+
+ if (!open_container_regkey( name, flags, KEY_READ, &hkey )) return NULL;
+
+ if ((ret = create_key_container( name, flags )))
+ {
+ ret->exch_key = read_key( hkey, AT_KEYEXCHANGE, protect_flags );
+ ret->sign_key = read_key( hkey, AT_SIGNATURE, protect_flags );
+ }
+
+ RegCloseKey( hkey );
+ return ret;
+}
+
BOOL WINAPI CPAcquireContext( HCRYPTPROV *ret_prov, LPSTR container, DWORD flags, PVTableProvStruc vtable )
{
- return FALSE;
+ struct container *ret;
+ char name[MAX_PATH];
+
+ TRACE( "%p, %s, %08x, %p\n", ret_prov, debugstr_a(container), flags, vtable );
+
+ if (container && *container)
+ {
+ if (lstrlenA( container ) >= sizeof(name)) return FALSE;
+ lstrcpyA( name, container );
+ }
+ else
+ {
+ DWORD len = sizeof(name);
+ if (!GetUserNameA( name, &len )) return FALSE;
+ }
+
+ switch (flags)
+ {
+ case 0:
+ ret = read_key_container( name, flags );
+ break;
+
+ case CRYPT_NEWKEYSET:
+ if ((ret = read_key_container( name, flags )))
+ {
+ heap_free( ret );
+ SetLastError( NTE_EXISTS );
+ return FALSE;
+ }
+ ret = create_key_container( name, flags );
+ break;
+
+ case CRYPT_VERIFYCONTEXT:
+ ret = create_key_container( "", flags );
+ break;
+
+ default:
+ FIXME( "unsupported flags %08x\n", flags );
+ return FALSE;
+ }
+
+ if (!ret) return FALSE;
+ *ret_prov = (HCRYPTPROV)ret;
+ return TRUE;
}
BOOL WINAPI CPReleaseContext( HCRYPTPROV hprov, DWORD flags )
{
- return FALSE;
+ struct container *container = (struct container *)hprov;
+
+ TRACE( "%p, %08x\n", (void *)hprov, flags );
+
+ if (container->magic != MAGIC_CONTAINER) return FALSE;
+ destroy_container( container );
+ return TRUE;
}
BOOL WINAPI CPGetProvParam( HCRYPTPROV hprov, DWORD param, BYTE *data, DWORD *len, DWORD flags )
diff --git a/dlls/dssenh/tests/dssenh.c b/dlls/dssenh/tests/dssenh.c
index c88fcd14661..d549b985d6f 100644
--- a/dlls/dssenh/tests/dssenh.c
+++ b/dlls/dssenh/tests/dssenh.c
@@ -323,6 +323,7 @@ static void test_keylength_array(HCRYPTPROV hProv,const struct keylength_test *t
static void test_keylength(void)
{
HCRYPTPROV hProv = 0;
+ HCRYPTKEY key;
BOOL result;
/* acquire base dss provider */
@@ -335,6 +336,17 @@ static void test_keylength(void)
}
ok(result, "Expected no errors.\n");
+ result = CryptGenKey(hProv, AT_SIGNATURE, 0, &key);
+ todo_wine ok(result, "Expected no errors.\n");
+ if (!result)
+ {
+ skip("skipping key length tests\n");
+ return;
+ }
+
+ result = CryptDestroyKey(key);
+ ok(result, "Expected no errors.\n");
+
/* perform keylength tests */
test_keylength_array(hProv, baseDSS_keylength, ARRAY_SIZE(baseDSS_keylength));
@@ -434,6 +446,11 @@ static void test_hash(const struct hash_test *tests, int testLen)
/* test algid hash */
result = CryptCreateHash(hProv, tests[i].algid, 0, 0, &hHash);
+ if (!result)
+ {
+ skip("skipping hash tests\n");
+ return;
+ }
ok(result, "Expected creation of a hash.\n");
result = CryptHashData(hHash, data, dataLen, 0);
@@ -588,6 +605,11 @@ static void test_data_encryption(const struct encrypt_test *tests, int testLen)
SetLastError(0xdeadbeef);
result = CryptCreateHash(hProv, CALG_MD5, 0, 0, &hHash);
+ if (!result)
+ {
+ skip("skipping encryption tests\n");
+ return;
+ }
ok(result, "Expected creation of a MD5 hash for key derivation.\n");
result = CryptHashData(hHash, (BYTE *)dataToHash, sizeof(dataToHash), 0);
@@ -673,6 +695,11 @@ static void test_cipher_modes(const struct ciphermode_test *tests, int testLen)
SetLastError(0xdeadbeef);
result = CryptCreateHash(hProv, CALG_MD5, 0, 0, &hHash);
+ if (!result)
+ {
+ skip("skipping ciper modes tests\n");
+ return;
+ }
ok(result, "Expected creation of a MD5 hash for key derivation.\n");
result = CryptHashData(hHash, (BYTE *)dataToHash, sizeof(dataToHash), 0);
@@ -831,6 +858,11 @@ static void test_signhash_array(HCRYPTPROV hProv, const struct signature_test *t
/* Get a private key of array specified ALG_ID */
result = CryptImportKey(hProv, tests[i].privateKey, tests[i].keyLen, 0, 0, &privKey);
+ if (!result)
+ {
+ skip("skipping sign tests\n");
+ return;
+ }
ok(result, "Failed to imported key, got %x\n", GetLastError());
/* Create hash object and add data for signature 1 */
@@ -1084,6 +1116,11 @@ static void test_keyExchange_baseDSS(HCRYPTPROV hProv, const struct keyExchange_
/* Generate key exchange keys for user1 and user2 */
result = CryptGenKey(hProv, tests[i].algid, 512 << 16 | CRYPT_PREGEN, &privKey1);
+ if (!result)
+ {
+ skip("skipping key exchange tests\n");
+ return;
+ }
ok(!result && GetLastError() == NTE_BAD_ALGID,
"Expected NTE_BAD_ALGID, got %x\n", GetLastError());
@@ -1233,6 +1270,11 @@ static void test_keyExchange_dssDH(HCRYPTPROV hProv, const struct keyExchange_te
/* Generate key exchange keys for user1 and user2 */
result = CryptGenKey(hProv, tests[i].algid, 512 << 16 | CRYPT_PREGEN, &privKey1);
+ if (!result)
+ {
+ skip("skipping key exchange tests\n");
+ return;
+ }
ok(result, "Failed to generate a key for user1, got %x\n", GetLastError());
result = CryptGenKey(hProv, tests[i].algid, 512 << 16 | CRYPT_PREGEN, &privKey2);
--
2.28.0
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