[PATCH 1/4] crypt32: Implement CryptUnregisterOIDInfo.

[Dmitry Timoshkov]

Signed-off-by: Dmitry Timoshkov 
---
 dlls/crypt32/crypt32.spec |  2 +-
 dlls/crypt32/oid.c        | 43 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/dlls/crypt32/crypt32.spec b/dlls/crypt32/crypt32.spec
index 0bc78a158d..64d5aa93fd 100644
--- a/dlls/crypt32/crypt32.spec
+++ b/dlls/crypt32/crypt32.spec
@@ -194,7 +194,7 @@
 @ stdcall CryptUnprotectMemory(ptr long long)
 @ stdcall CryptUnregisterDefaultOIDFunction(long str wstr)
 @ stdcall CryptUnregisterOIDFunction(long str str)
-@ stub CryptUnregisterOIDInfo
+@ stdcall CryptUnregisterOIDInfo(ptr)
 @ stdcall CryptVerifyCertificateSignature(long long ptr long ptr)
 @ stdcall CryptVerifyCertificateSignatureEx(long long long ptr long ptr long ptr)
 @ stdcall CryptVerifyDetachedMessageHash(ptr ptr long long ptr ptr ptr ptr)
diff --git a/dlls/crypt32/oid.c b/dlls/crypt32/oid.c
index c9b0b412cf..e9ccab7494 100644
--- a/dlls/crypt32/oid.c
+++ b/dlls/crypt32/oid.c
@@ -1,6 +1,7 @@
 /*
  * Copyright 2002 Mike McCormack for CodeWeavers
  * Copyright 2005-2006 Juan Lang
+ * Copyright 2018 Dmitry Timoshkov
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -652,6 +653,48 @@ error_close_key:
     return TRUE;
 }

+/***********************************************************************
+ *             CryptUnregisterOIDInfo (CRYPT32.@)
+ */
+BOOL WINAPI CryptUnregisterOIDInfo(PCCRYPT_OID_INFO info)
+{
+    char *key_name;
+    HKEY root;
+    DWORD err;
+
+    TRACE("(%p)\n", info);
+
+    if (!info || info->cbSize != sizeof(*info) || !info->pszOID)
+    {
+        SetLastError(E_INVALIDARG);
+        return FALSE;
+    }
+
+    err = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo", 0, KEY_ALL_ACCESS, &root);
+    if (err != ERROR_SUCCESS)
+    {
+        SetLastError(err);
+        return FALSE;
+    }
+
+    key_name = CryptMemAlloc(strlen(info->pszOID) + 16);
+    if (key_name)
+    {
+        sprintf(key_name, "%s!%u", info->pszOID, info->dwGroupId);
+        err = RegDeleteKeyA(root, key_name);
+    }
+    else
+        err = ERROR_OUTOFMEMORY;
+
+    CryptMemFree(key_name);
+    RegCloseKey(root);
+
+    if (err)
+        SetLastError(err);
+
+    return !err;
+}
+
 /***********************************************************************
  *             CryptRegisterOIDInfo (CRYPT32.@)
  */