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windows-nt/Source/XPSP1/NT/inetsrv/iis/admin/certobj/certificat.cpp

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2020-09-26 03:20:57 -05:00
// IISCertObj.cpp : Implementation of CIISCertObj
#include "stdafx.h"
#include "CertObj.h"
#include "common.h"
#include "IISCertObj.h"
//#ifdef FULL_OBJECT
#include "base64.h"
//#endif
#include <wincrypt.h>
#include <cryptui.h>
HRESULT ShutdownSSL(CString& server_name);
HCERTSTORE OpenMyStore(IEnroll * pEnroll, HRESULT * phResult);
BOOL InstallHashToMetabase(CRYPT_HASH_BLOB * pHash,BSTR machine_name,HRESULT * phResult);
CERT_CONTEXT * GetInstalledCert(HRESULT * phResult, CString csKeyPath);
BOOL TrustIsCertificateSelfSigned(PCCERT_CONTEXT pContext,DWORD dwEncoding, DWORD dwFlags);
BOOL AddChainToStore(HCERTSTORE hCertStore,PCCERT_CONTEXT pCertContext,DWORD cStores,HCERTSTORE * rghStores,BOOL fDontAddRootCert,CERT_TRUST_STATUS* pChainTrustStatus);
HRESULT UninstallCert(CString csInstanceName);
DWORD CreateGoodPassword(BYTE *szPwd,DWORD dwLen);
LPTSTR CreatePassword(int iSize);
#define TEMP_PASSWORD_LENGTH 50
//#define DEBUG_FLAG
#ifdef DEBUG_FLAG
inline void _cdecl DebugTrace(LPTSTR lpszFormat, ...)
{
int nBuf;
TCHAR szBuffer[512];
va_list args;
va_start(args, lpszFormat);
nBuf = _vsntprintf(szBuffer, sizeof(szBuffer), lpszFormat, args);
ASSERT(nBuf < sizeof(szBuffer)); //Output truncated as it was > sizeof(szBuffer)
OutputDebugString(szBuffer);
va_end(args);
}
#else
inline void _cdecl DebugTrace(LPTSTR , ...){}
#endif
#define IISDebugOutput DebugTrace
/////////////////////////////////////////////////////////////////////////////
// CIISCertObj
STDMETHODIMP CIISCertObj::put_ServerName(BSTR newVal)
{
m_ServerName = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_UserName(BSTR newVal)
{
m_UserName = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_UserPassword(BSTR newVal)
{
m_UserPassword = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_InstanceName(BSTR newVal)
{
m_InstanceName = newVal;
return S_OK;
}
#ifdef FULL_OBJECT
STDMETHODIMP CIISCertObj::put_Password(BSTR newVal)
{
m_Password = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_CommonName(BSTR newVal)
{
m_CommonName = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_FriendlyName(BSTR newVal)
{
m_FriendlyName = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_Organization(BSTR newVal)
{
m_Organization = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_OrganizationUnit(BSTR newVal)
{
m_OrganizationUnit = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_Locality(BSTR newVal)
{
m_Locality = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_State(BSTR newVal)
{
m_State = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_Country(BSTR newVal)
{
m_Country = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_CertAuthority(BSTR newVal)
{
m_CertAuthority = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_CertTemplate(BSTR newVal)
{
m_CertTemplate = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_KeySize(int newVal)
{
m_KeySize = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::put_SGC_Cert(BOOL newVal)
{
m_SGC_Cert = newVal;
return S_OK;
}
STDMETHODIMP CIISCertObj::LoadSettings(BSTR ApplicationKey, BSTR SettingsKey)
{
return S_OK;
}
STDMETHODIMP CIISCertObj::SaveSettings(BSTR ApplicationKey, BSTR SettingsKey)
{
return S_OK;
}
STDMETHODIMP CIISCertObj::CreateRequest(BSTR FileName)
{
CString dn;
HRESULT hr;
TCHAR usage[] = _T(szOID_PKIX_KP_SERVER_AUTH);
CCryptBlobIMalloc req_blob;
if (FAILED(hr = CreateDNString(dn)))
return hr;
ATLASSERT(dn.length() > 0);
if (FAILED(hr = GetEnroll()->createPKCS10WStr(dn, (LPTSTR)usage, req_blob)))
{
return hr;
}
// BASE64 encode pkcs 10
DWORD cch;
char * psz;
if ( ERROR_SUCCESS != Base64EncodeA(req_blob.GetData(), req_blob.GetSize(), NULL, &cch)
|| NULL == (psz = (char *)_alloca(cch+1))
|| ERROR_SUCCESS != Base64EncodeA(req_blob.GetData(), req_blob.GetSize(), psz, &cch)
)
{
ATLASSERT(FALSE);
return E_FAIL;
}
return S_OK;
}
STDMETHODIMP CIISCertObj::RequestCert(BSTR CertAuthority)
{
// TODO: Add your implementation code here
return S_OK;
}
STDMETHODIMP CIISCertObj::ProcessResponse(BSTR FileName)
{
// TODO: Add your implementation code here
return S_OK;
}
#endif
STDMETHODIMP CIISCertObj::IsInstalled(BSTR InstanceName, VARIANT_BOOL * retval)
{
HRESULT hr = S_OK;
// Check mandatory properties
if (InstanceName == NULL || *InstanceName == 0 || retval == NULL)
{
return ERROR_INVALID_PARAMETER;
}
m_InstanceName = InstanceName;
CString csServerName = m_ServerName;
if (csServerName.IsEmpty())
{
hr = IsInstalledRemote(InstanceName, retval);
goto IsInstalled_Exit;
}
// There is a servername specified...
// check if it's the local machine that was specified!
if (IsServerLocal(csServerName))
{
hr = IsInstalledRemote(InstanceName, retval);
goto IsInstalled_Exit;
}
// this must be a remote machine
{
//ASSERT(GetObject(&hr) != NULL);
IIISCertObj * pObj;
if (NULL != (pObj = GetObject(&hr)))
{
hr = pObj->put_InstanceName(InstanceName);
hr = pObj->IsInstalledRemote(InstanceName, retval);
}
}
IsInstalled_Exit:
return hr;
}
STDMETHODIMP CIISCertObj::IsInstalledRemote(BSTR InstanceName,VARIANT_BOOL * retval)
{
HRESULT hr = S_OK;
CERT_CONTEXT * pCertContext = NULL;
// Check mandatory properties
if (InstanceName == NULL || *InstanceName == 0 || retval == NULL)
{
return ERROR_INVALID_PARAMETER;
}
pCertContext = GetInstalledCert(&hr,InstanceName);
if (FAILED(hr) || NULL == pCertContext)
{
hr = S_OK;
*retval = FALSE;
}
else
{
hr = S_OK;
*retval = TRUE;
CertFreeCertificateContext(pCertContext);
}
return hr;
}
HRESULT CIISCertObj::RemoveCertProxy(IIISCertObj * pObj,BSTR InstanceName, BOOL bPrivateKey)
{
HRESULT hr = E_FAIL;
if (pObj)
{
hr = pObj->RemoveCert(InstanceName,bPrivateKey);
}
return hr;
}
STDMETHODIMP CIISCertObj::RemoveCert(BSTR InstanceName, BOOL bPrivateKey)
{
HRESULT hr = E_FAIL;
PCCERT_CONTEXT pCertContext = NULL;
DWORD cbKpi = 0;
PCRYPT_KEY_PROV_INFO pKpi = NULL ;
HCRYPTPROV hCryptProv = NULL;
do
{
// get the certificate from the server
pCertContext = GetInstalledCert(&hr,InstanceName);
if (NULL == pCertContext)
{
break;
}
if (!CertGetCertificateContextProperty(pCertContext, CERT_KEY_PROV_INFO_PROP_ID, NULL, &cbKpi))
{
hr = HRESULT_FROM_WIN32(GetLastError());
break;
}
pKpi = ( PCRYPT_KEY_PROV_INFO ) malloc( cbKpi );
if ( NULL != pKpi )
{
if (!CertGetCertificateContextProperty(pCertContext, CERT_KEY_PROV_INFO_PROP_ID, (void *)pKpi, &cbKpi))
{
hr = HRESULT_FROM_WIN32(GetLastError());
break;
}
// Delete the key container
if (!CryptAcquireContext(&hCryptProv,pKpi->pwszContainerName,pKpi->pwszProvName,pKpi->dwProvType,pKpi->dwFlags | CRYPT_DELETEKEYSET | CRYPT_MACHINE_KEYSET))
{
hr = HRESULT_FROM_WIN32(GetLastError());
break;
}
if (NULL != pKpi){free(pKpi);}
if (!CertSetCertificateContextProperty(pCertContext, CERT_KEY_PROV_INFO_PROP_ID, 0, NULL))
{
hr = HRESULT_FROM_WIN32(GetLastError());
break;
}
}
// uninstall the certificate from the site, reset SSL flag
// if we are exporting the private key, remove the cert from the storage
// and delete private key
UninstallCert(InstanceName);
// remove ssl key from metabase
CString str = InstanceName;
ShutdownSSL(str);
// delete the private key
if (bPrivateKey)
{
PCCERT_CONTEXT pcDup = NULL ;
pcDup = CertDuplicateCertificateContext(pCertContext);
if (pcDup)
{
if (!CertDeleteCertificateFromStore(pcDup))
{
hr = HRESULT_FROM_WIN32(GetLastError());
break;
}
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
}
hr = ERROR_SUCCESS;
} while (FALSE);
if (pCertContext) {CertFreeCertificateContext(pCertContext);}
return hr;
}
STDMETHODIMP CIISCertObj::Export(BSTR FileName,BSTR Password,BOOL bPrivateKey,BOOL bCertChain,BOOL bRemoveCert)
{
HRESULT hr = S_OK;
DWORD cbEncodedSize = 0;
char * pszEncodedString = NULL;
DWORD blob_cbData = 0;
BYTE * blob_pbData = NULL;
BOOL blob_freeme = FALSE;
BSTR bstrInstanceName = SysAllocString(m_InstanceName);
// Check mandatory properties
if ( FileName == NULL || *FileName == 0
|| Password == NULL || *Password == 0
|| bstrInstanceName == NULL || *bstrInstanceName == 0)
{
return ERROR_INVALID_PARAMETER;
}
IIISCertObj * pObj = GetObject(&hr);
if (FAILED(hr))
{
goto Export_Exit;
}
// Call function go get data from the remote/local iis store
// and return it back as a blob. the blob could be returned back as Base64 encoded
// so check that flag
hr = ExportToBlobProxy(pObj, bstrInstanceName, Password, bPrivateKey, bCertChain, &cbEncodedSize, &pszEncodedString);
if (FAILED(hr))
{
goto Export_Exit;
}
// check if things are kool
if (bRemoveCert)
{
hr = RemoveCertProxy(pObj,bstrInstanceName, bPrivateKey);
if (FAILED(hr))
{
goto Export_Exit;
}
}
if (SUCCEEDED(hr))
{
int err;
// The data we got back was Base64 encoded to remove nulls.
// we need to decode it back to it's original format.
if( (err = Base64DecodeA(pszEncodedString,cbEncodedSize,NULL,&blob_cbData)) != ERROR_SUCCESS ||
(blob_pbData = (BYTE *) malloc(blob_cbData)) == NULL ||
(err = Base64DecodeA(pszEncodedString,cbEncodedSize,blob_pbData,&blob_cbData)) != ERROR_SUCCESS )
{
SetLastError(err);
hr = HRESULT_FROM_WIN32(err);
return hr;
}
blob_freeme = TRUE;
HANDLE hFile = CreateFile(FileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (INVALID_HANDLE_VALUE == hFile)
{
hr = HRESULT_FROM_WIN32(GetLastError());
return hr;
}
DWORD written = 0;
if (!WriteFile(hFile, blob_pbData, blob_cbData, &written, NULL))
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
else
{
hr = S_OK;
}
CloseHandle(hFile);
// Erase the memory that the private key used to be in!!!
ZeroMemory(pszEncodedString, sizeof(cbEncodedSize));
ZeroMemory(blob_pbData, sizeof(blob_cbData));
}
Export_Exit:
if (pObj != NULL)
{
if (pObj != this)
{
pObj->Release();pObj=NULL;
}
}
if (blob_freeme){if (blob_pbData != NULL){free(blob_pbData);blob_pbData=NULL;}}
if (pszEncodedString != NULL){CoTaskMemFree(pszEncodedString);pszEncodedString=NULL;}
return hr;
}
//
// Proxy to the real call ExportToBlob()
// this function figures out how much space to allocate, and then calls ExportToBlob().
//
// if succeeded and they get the blob back,
// and the caller must call CoTaskMemFree()
//
HRESULT ExportToBlobProxy(IIISCertObj * pObj,BSTR InstanceName,BSTR Password,BOOL bPrivateKey,BOOL bCertChain,DWORD * pcbSize,char ** pBlobBinary)
{
HRESULT hr = E_FAIL;
DWORD cbEncodedSize = 0;
char * pszEncodedString = NULL;
* pBlobBinary = _T('\0');
// call the remote function that will run on the remote/local machine
// and grab it's certificate from iis and send it back to us
hr = pObj->ExportToBlob(InstanceName, Password, bPrivateKey, bCertChain, &cbEncodedSize, (char **) &pszEncodedString);
if (ERROR_SUCCESS == hr)
{
// otherwise hey, we've got our data!
// copy it back
*pcbSize = cbEncodedSize;
*pBlobBinary = pszEncodedString;
hr = S_OK;
}
return hr;
}
STDMETHODIMP CIISCertObj::ExportToBlob(BSTR InstanceName,BSTR Password,BOOL bPrivateKey,BOOL bCertChain,DWORD *cbBufferSize,char **pbBuffer)
{
HRESULT hr = E_FAIL;
PCCERT_CONTEXT pCertContext = NULL;
BOOL bStatus = FALSE;
HCERTSTORE hStore = NULL;
DWORD dwOpenFlags = CERT_STORE_READONLY_FLAG | CERT_STORE_ENUM_ARCHIVED_FLAG;
CRYPT_DATA_BLOB DataBlob;
ZeroMemory(&DataBlob, sizeof(CRYPT_DATA_BLOB));
char *pszB64Out = NULL;
DWORD pcchB64Out = 0;
DWORD err;
//
// get the certificate from the server
//
pCertContext = GetInstalledCert(&hr,InstanceName);
if (NULL == pCertContext)
{
*cbBufferSize = 0;
pbBuffer = NULL;
goto ExportToBlob_Exit;
}
//
// Export cert
//
// Open a temporary store to stick the cert in.
hStore = CertOpenStore(CERT_STORE_PROV_MEMORY,X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,0,dwOpenFlags,NULL);
if(NULL == hStore)
{
*cbBufferSize = 0;
pbBuffer = NULL;
hr = HRESULT_FROM_WIN32(GetLastError());
goto ExportToBlob_Exit;
}
//
// get all the certs in the chain if we need to
//
if (bCertChain)
{
AddChainToStore(hStore, pCertContext, 0, 0, FALSE, NULL);
}
if(!CertAddCertificateContextToStore(hStore,pCertContext,CERT_STORE_ADD_REPLACE_EXISTING,NULL))
{
*cbBufferSize = 0;
pbBuffer = NULL;
hr = HRESULT_FROM_WIN32(GetLastError());
goto ExportToBlob_Exit;
}
// free cert context since we no longer need to hold it
if (pCertContext)
{
CertFreeCertificateContext(pCertContext);pCertContext=NULL;
}
DataBlob.cbData = 0;
DataBlob.pbData = NULL;
if (!PFXExportCertStoreEx(hStore,&DataBlob,Password,NULL,bPrivateKey ? EXPORT_PRIVATE_KEYS : 0))
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto ExportToBlob_Exit;
}
if(DataBlob.cbData <= 0)
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto ExportToBlob_Exit;
}
if(NULL == (DataBlob.pbData = (PBYTE) ::CoTaskMemAlloc(DataBlob.cbData)))
{
hr = E_OUTOFMEMORY;
goto ExportToBlob_Exit;
}
//
// at this point they have allocated enough memory
// let's go and get the cert and put it into DataBlob
//
if(!PFXExportCertStoreEx(hStore,&DataBlob,Password,NULL,bPrivateKey ? EXPORT_PRIVATE_KEYS : 0))
{
if (DataBlob.pbData){CoTaskMemFree(DataBlob.pbData);DataBlob.pbData = NULL;}
hr = HRESULT_FROM_WIN32(GetLastError());
goto ExportToBlob_Exit;
}
// Encode it so that it can be passed back as a string (there are no Nulls in it)
err = Base64EncodeA(DataBlob.pbData,DataBlob.cbData,NULL,&pcchB64Out);
if (err != ERROR_SUCCESS)
{
hr = E_FAIL;
goto ExportToBlob_Exit;
}
// allocate some space and then try it.
pcchB64Out = pcchB64Out * sizeof(char);
pszB64Out = (char *) ::CoTaskMemAlloc(pcchB64Out);
if (NULL == pszB64Out)
{
hr = HRESULT_FROM_WIN32(E_OUTOFMEMORY);
goto ExportToBlob_Exit;
}
err = Base64EncodeA(DataBlob.pbData,DataBlob.cbData,pszB64Out,&pcchB64Out);
if (err != ERROR_SUCCESS)
{
hr = E_FAIL;
goto ExportToBlob_Exit;
}
// copy the new memory to pass back
*cbBufferSize = pcchB64Out;
*pbBuffer = (char *)::CoTaskMemAlloc(pcchB64Out);
if (*pbBuffer == NULL)
{
hr = E_OUTOFMEMORY;
goto ExportToBlob_Exit;
}
//strcpy(*pbBuffer,pszB64Out);
memcpy(*pbBuffer,pszB64Out,pcchB64Out);
hr = ERROR_SUCCESS;
ExportToBlob_Exit:
if (NULL != pszB64Out){CoTaskMemFree(pszB64Out);pszB64Out = NULL;}
if (NULL != DataBlob.pbData){::CoTaskMemFree(DataBlob.pbData);DataBlob.pbData = NULL;}
if (NULL != hStore){CertCloseStore(hStore, 0);hStore=NULL;}
if (NULL != pCertContext) {CertFreeCertificateContext(pCertContext);pCertContext=NULL;}
return hr;
}
STDMETHODIMP CIISCertObj::Import(BSTR FileName, BSTR Password)
{
HRESULT hr = S_OK;
BYTE * pbData = NULL;
DWORD actual = 0, cbData = 0;
BSTR bstrInstanceName = SysAllocString(m_InstanceName);
// Check mandatory properties
if ( FileName == NULL || *FileName == 0
|| Password == NULL || *Password == 0
|| bstrInstanceName == NULL || *bstrInstanceName == 0)
{
return ERROR_INVALID_PARAMETER;
}
HANDLE hFile = CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
hr = HRESULT_FROM_WIN32(GetLastError());
hFile = NULL;
goto Import_Exit;
}
if (-1 == (cbData = ::GetFileSize(hFile, NULL)))
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto Import_Exit;
}
if (NULL == (pbData = (BYTE *)::CoTaskMemAlloc(cbData)))
{
hr = E_OUTOFMEMORY;
goto Import_Exit;
}
if (ReadFile(hFile, pbData, cbData, &actual, NULL))
{
IIISCertObj * pObj = GetObject(&hr);
if (SUCCEEDED(hr))
{
hr = ImportFromBlobProxy(pObj, bstrInstanceName, Password, actual, pbData);
}
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto Import_Exit;
}
Import_Exit:
if (pbData != NULL){::CoTaskMemFree(pbData);}
if (hFile != NULL){CloseHandle(hFile);}
return hr;
}
HRESULT ImportFromBlobProxy(IIISCertObj * pObj,BSTR InstanceName,BSTR Password,DWORD actual,BYTE *pData)
{
HRESULT hr = E_FAIL;
char *pszB64Out = NULL;
DWORD pcchB64Out = 0;
// base64 encode the data for transfer to the remote machine
DWORD err;
pcchB64Out = 0;
// Encode it so that it can be passed back as a string (there are no Nulls in it)
err = Base64EncodeA(pData,actual,NULL,&pcchB64Out);
if (err != ERROR_SUCCESS)
{
hr = E_FAIL;
goto ImportFromBlobProxy_Exit;
}
// allocate some space and then try it.
pcchB64Out = pcchB64Out * sizeof(char);
pszB64Out = (char *) ::CoTaskMemAlloc(pcchB64Out);
if (NULL == pszB64Out)
{
hr = HRESULT_FROM_WIN32(E_OUTOFMEMORY);
goto ImportFromBlobProxy_Exit;
}
err = Base64EncodeA(pData,actual,pszB64Out,&pcchB64Out);
if (err != ERROR_SUCCESS)
{
hr = E_FAIL;
goto ImportFromBlobProxy_Exit;
}
// the data to send are now in these variables
// pcchB64Out
// pszB64Out
hr = pObj->ImportFromBlob(InstanceName, Password, pcchB64Out, pszB64Out);
if (SUCCEEDED(hr))
{
// otherwise hey, The data was imported!
hr = S_OK;
}
ImportFromBlobProxy_Exit:
if (NULL != pszB64Out){CoTaskMemFree(pszB64Out);}
return hr;
}
HRESULT CIISCertObj::ImportFromBlob(BSTR InstanceName,BSTR Password,DWORD count,char *pData)
{
HRESULT hr = S_OK;
CRYPT_DATA_BLOB blob;
ZeroMemory(&blob, sizeof(CRYPT_DATA_BLOB));
LPTSTR pPass = Password;
BOOL blob_freeme = FALSE;
int err;
// The data we got back was Base64 encoded to remove nulls.
// we need to decode it back to it's original format.
if( (err = Base64DecodeA(pData,count,NULL,&blob.cbData)) != ERROR_SUCCESS ||
(blob.pbData = (BYTE *) malloc(blob.cbData)) == NULL ||
(err = Base64DecodeA(pData,count,blob.pbData,&blob.cbData)) != ERROR_SUCCESS )
{
SetLastError(err);
hr = HRESULT_FROM_WIN32(err);
return hr;
}
blob_freeme = TRUE;
if (!PFXVerifyPassword(&blob, pPass, 0))
{
// Try empty password
if (pPass == NULL)
{
if (!PFXVerifyPassword(&blob, pPass = L'\0', 0))
{
hr = ERROR_INVALID_PARAMETER;
}
}
else
{
hr = ERROR_INVALID_PARAMETER;
}
}
if (SUCCEEDED(hr))
{
HCERTSTORE hStore = PFXImportCertStore(&blob, pPass, CRYPT_MACHINE_KEYSET|CRYPT_EXPORTABLE);
if (hStore != NULL)
{
//add the certificate with private key to my store; and the rest
//to the ca store
PCCERT_CONTEXT pCertContext = NULL;
PCCERT_CONTEXT pCertPre = NULL;
while ( SUCCEEDED(hr)
&& NULL != (pCertContext = CertEnumCertificatesInStore(hStore, pCertPre))
)
{
//check if the certificate has the property on it
//make sure the private key matches the certificate
//search for both machine key and user keys
DWORD dwData = 0;
if (CertGetCertificateContextProperty(pCertContext,CERT_KEY_PROV_INFO_PROP_ID, NULL, &dwData) && CryptFindCertificateKeyProvInfo(pCertContext, 0, NULL))
{
// This certificate should go to the My store
HCERTSTORE hDestStore = CertOpenStore(CERT_STORE_PROV_SYSTEM,PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,NULL,CERT_SYSTEM_STORE_LOCAL_MACHINE,L"MY");
if (hDestStore != NULL)
{
// Put it to store
if (CertAddCertificateContextToStore(hDestStore,pCertContext,CERT_STORE_ADD_REPLACE_EXISTING,NULL))
{
// Install to metabase
CRYPT_HASH_BLOB hash;
if ( CertGetCertificateContextProperty(pCertContext,CERT_SHA1_HASH_PROP_ID, NULL, &hash.cbData)
&& NULL != (hash.pbData = (BYTE *)_alloca(hash.cbData))
&& CertGetCertificateContextProperty(pCertContext, CERT_SHA1_HASH_PROP_ID, hash.pbData, &hash.cbData))
{
InstallHashToMetabase(&hash, InstanceName, &hr);
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
CertCloseStore(hDestStore, 0);
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
} // my store certificate
//see if the certificate is self-signed.
//if it is selfsigned, goes to the root store
else if (TrustIsCertificateSelfSigned(pCertContext,pCertContext->dwCertEncodingType, 0))
{
//Put it to the root store
HCERTSTORE hDestStore=CertOpenStore(CERT_STORE_PROV_SYSTEM,PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,NULL,CERT_SYSTEM_STORE_LOCAL_MACHINE,L"ROOT");
if (hDestStore != NULL)
{
// Put it to store
if (!CertAddCertificateContextToStore(hDestStore,pCertContext,CERT_STORE_ADD_REPLACE_EXISTING,NULL))
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
CertCloseStore(hDestStore, 0);
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
}
else
{
//Put it to the CA store
HCERTSTORE hDestStore=CertOpenStore(CERT_STORE_PROV_SYSTEM,PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,NULL,CERT_SYSTEM_STORE_LOCAL_MACHINE,L"CA");
if (hDestStore != NULL)
{
// Put it to store
if (!CertAddCertificateContextToStore(hDestStore,pCertContext,CERT_STORE_ADD_REPLACE_EXISTING,NULL))
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
CertCloseStore(hDestStore, 0);
}
else
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
}
pCertPre = pCertContext;
} //while
CertCloseStore(hStore, 0);
}
else
hr = HRESULT_FROM_WIN32(GetLastError());
}
//ImportFromBlob_Exit:
if (blob_freeme){if (blob.pbData != NULL){free(blob.pbData);blob.pbData=NULL;}}
return hr;
}
//////////////////////////////////////////////////////////////////
#ifdef FULL_OBJECT
HRESULT CIISCertObj::Init()
{
HRESULT hr;
if (!m_bInitDone)
{
do
{
// setup IEnroll object properly
DWORD dwFlags;
if (FAILED(hr = GetEnroll()->get_MyStoreFlags(&dwFlags)))
{
break;
}
dwFlags &= ~CERT_SYSTEM_STORE_LOCATION_MASK;
dwFlags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
// following call will change Request store flags also
if (FAILED(hr = GetEnroll()->put_MyStoreFlags(dwFlags)))
{
break;
}
if (FAILED(hr = GetEnroll()->get_GenKeyFlags(&dwFlags)))
{
break;
}
dwFlags |= CRYPT_EXPORTABLE;
if (FAILED(hr = GetEnroll()->put_GenKeyFlags(dwFlags))
|| FAILED(hr = GetEnroll()->put_KeySpec(AT_KEYEXCHANGE))
|| FAILED(hr = GetEnroll()->put_ProviderType(PROV_RSA_SCHANNEL))
|| FAILED(hr = GetEnroll()->put_DeleteRequestCert(TRUE)))
{
break;
}
} while (FALSE);
m_bInitDone = SUCCEEDED(hr);
}
return hr;
}
IEnroll * CIISCertObj::GetEnroll()
{
if (m_pEnroll == NULL)
{
HRESULT hr = CoCreateInstance(CLSID_CEnroll,NULL,CLSCTX_INPROC_SERVER,IID_IEnroll,(void **)&m_pEnroll);
}
return m_pEnroll;
}
HCERTSTORE OpenMyStore(IEnroll * pEnroll, HRESULT * phResult)
{
ASSERT(NULL != phResult);
HCERTSTORE hStore = NULL;
hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM,PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,NULL,CERT_SYSTEM_STORE_LOCAL_MACHINE,L"MY");
if (hStore == NULL)
{
*phResult = HRESULT_FROM_WIN32(GetLastError());
}
return hStore;
}
#endif
HRESULT ShutdownSSL(CString& server_name)
{
CComAuthInfo auth;
CString str = server_name;
str += _T("/root");
CMetaKey key(&auth, str,
METADATA_PERMISSION_READ | METADATA_PERMISSION_WRITE);
DWORD dwSslAccess;
if (!key.Succeeded())
{
return key.QueryResult();
}
if (SUCCEEDED(key.QueryValue(MD_SSL_ACCESS_PERM, dwSslAccess)) && dwSslAccess > 0)
{
key.SetValue(MD_SSL_ACCESS_PERM, 0);
}
// Now we need to remove SSL setting from any virtual directory below
CError err;
CStringListEx data_paths;
DWORD dwMDIdentifier, dwMDAttributes, dwMDUserType,dwMDDataType;
VERIFY(CMetaKey::GetMDFieldDef(MD_SSL_ACCESS_PERM, dwMDIdentifier, dwMDAttributes, dwMDUserType,dwMDDataType));
err = key.GetDataPaths( data_paths,dwMDIdentifier,dwMDDataType);
if (err.Succeeded() && !data_paths.empty())
{
CStringListEx::iterator it = data_paths.begin();
while (it != data_paths.end())
{
CString& str = (*it++);
if (SUCCEEDED(key.QueryValue(MD_SSL_ACCESS_PERM, dwSslAccess, NULL, str)) && dwSslAccess > 0)
{
key.SetValue(MD_SSL_ACCESS_PERM, 0, NULL, str);
}
}
}
return key.QueryResult();
}
/*
InstallHashToMetabase
Function writes hash array to metabase. After that IIS
could use certificate with that hash from MY store.
Function expects server_name in format lm\w3svc\<number>,
i.e. from root node down to virtual server
*/
BOOL InstallHashToMetabase(CRYPT_HASH_BLOB * pHash,BSTR InstanceName,HRESULT * phResult)
{
BOOL bRes = FALSE;
CComAuthInfo auth;
CString key_path = SZ_MBN_SEP_STR SZ_MBN_MACHINE SZ_MBN_SEP_STR; // SZ_MBN_WEB SZ_MBN_SEP_STR;
key_path += InstanceName;
CMetaKey key(&auth, key_path, METADATA_PERMISSION_READ | METADATA_PERMISSION_WRITE);
if (key.Succeeded())
{
CBlob blob;
blob.SetValue(pHash->cbData, pHash->pbData, TRUE);
bRes = SUCCEEDED(*phResult = key.SetValue(MD_SSL_CERT_HASH, blob))
&& SUCCEEDED(*phResult = key.SetValue(MD_SSL_CERT_STORE_NAME, CString(L"MY")));
}
else
{
*phResult = key.QueryResult();
}
return bRes;
}
#ifdef FULL_OBJECT
HRESULT CIISCertObj::CreateDNString(CString& str)
{
str = _T("");
str += _T("CN=") + m_CommonName;
str += _T("\n,OU=") + m_OrganizationUnit;
str += _T("\n,O=") + m_Organization;
str += _T("\n,L=") + m_Locality;
str += _T("\n,S=") + m_State;
str += _T("\n,C=") + m_Country;
return S_OK;
}
#endif
CERT_CONTEXT * GetInstalledCert(HRESULT * phResult, CString csKeyPath)
{
// ATLASSERT(GetEnroll() != NULL);
ATLASSERT(phResult != NULL);
CERT_CONTEXT * pCert = NULL;
*phResult = S_OK;
CComAuthInfo auth;
CString key_path = SZ_MBN_SEP_STR SZ_MBN_MACHINE SZ_MBN_SEP_STR;// SZ_MBN_WEB SZ_MBN_SEP_STR;
key_path += csKeyPath;
CMetaKey key(&auth, key_path, METADATA_PERMISSION_READ | METADATA_PERMISSION_WRITE);
if (key.Succeeded())
{
CString store_name;
CBlob hash;
if (SUCCEEDED(*phResult = key.QueryValue(MD_SSL_CERT_STORE_NAME, store_name)) &&
SUCCEEDED(*phResult = key.QueryValue(MD_SSL_CERT_HASH, hash)))
{
// Open MY store. We assume that store type and flags
// cannot be changed between installation and unistallation
// of the sertificate.
HCERTSTORE hStore = CertOpenStore(CERT_STORE_PROV_SYSTEM,PKCS_7_ASN_ENCODING | X509_ASN_ENCODING,NULL,CERT_SYSTEM_STORE_LOCAL_MACHINE,store_name);
ASSERT(hStore != NULL);
if (hStore != NULL)
{
// Now we need to find cert by hash
CRYPT_HASH_BLOB crypt_hash;
crypt_hash.cbData = hash.GetSize();
crypt_hash.pbData = hash.GetData();
pCert = (CERT_CONTEXT *)CertFindCertificateInStore(hStore,X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,0,CERT_FIND_HASH,(LPVOID)&crypt_hash,NULL);
if (pCert == NULL)
{
*phResult = HRESULT_FROM_WIN32(GetLastError());
}
VERIFY(CertCloseStore(hStore, 0));
}
else
{
*phResult = HRESULT_FROM_WIN32(GetLastError());
}
}
}
else
{
*phResult = key.QueryResult();
}
return pCert;
}
HRESULT UninstallCert(CString csInstanceName)
{
CComAuthInfo auth;
CString key_path = SZ_MBN_SEP_STR SZ_MBN_MACHINE SZ_MBN_SEP_STR;// SZ_MBN_WEB SZ_MBN_SEP_STR;
key_path += csInstanceName;
CMetaKey key(&auth, key_path, METADATA_PERMISSION_READ | METADATA_PERMISSION_WRITE);
if (key.Succeeded())
{
CString store_name;
key.QueryValue(MD_SSL_CERT_STORE_NAME, store_name);
if (SUCCEEDED(key.DeleteValue(MD_SSL_CERT_HASH)))
{
key.DeleteValue(MD_SSL_CERT_STORE_NAME);
}
}
return key.QueryResult();
}
IIISCertObj * CIISCertObj::GetObject(HRESULT * phr)
{
IIISCertObj * pObj = NULL;
pObj = GetObject(phr,m_ServerName,m_UserName,m_UserPassword);
return pObj;
}
IIISCertObj * CIISCertObj::GetObject(HRESULT * phr,CString csServerName,CString csUserName,CString csUserPassword)
{
if (csServerName.IsEmpty())
{
// object is null, but it's the local machine, so just return back this pointer
m_pObj = this;
goto GetObject_Exit;
}
// There is a servername specified...
// check if it's the local machine that was specified!
if (IsServerLocal(csServerName))
{
m_pObj = this;
goto GetObject_Exit;
}
else
{
// there is a remote servername specified
// let's see if the machine has the com object that we want....
// we are using the user/name password that are in this object
// so were probably on the local machine
CComAuthInfo auth(csServerName,csUserName,csUserPassword);
COSERVERINFO * pcsiName = auth.CreateServerInfoStruct();
MULTI_QI res[1] =
{
{&__uuidof(IIISCertObj), NULL, 0}
};
// Try to instantiante the object on the remote server...
// with the supplied authentication info (pcsiName)
//#define CLSCTX_SERVER (CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER)
//#define CLSCTX_ALL (CLSCTX_INPROC_HANDLER | CLSCTX_SERVER)
// this one seems to work with surrogates..
*phr = CoCreateInstanceEx(CLSID_IISCertObj,NULL,CLSCTX_LOCAL_SERVER,pcsiName,1,res);
if (FAILED(*phr))
{
//IISDebugOutput(_T("CoCreateInstanceEx on CLSID_IISCertObj failed! code=0x%x\n"),*phr);
goto GetObject_Exit;
}
// at this point we were able to instantiate the com object on the server (local or remote)
m_pObj = (IIISCertObj *)res[0].pItf;
if (auth.UsesImpersonation())
{
*phr = auth.ApplyProxyBlanket(m_pObj);
}
auth.FreeServerInfoStruct(pcsiName);
}
GetObject_Exit:
//ASSERT(m_pObj != NULL);
return m_pObj;
}
BOOL AddChainToStore(HCERTSTORE hCertStore,PCCERT_CONTEXT pCertContext,DWORD cStores,HCERTSTORE * rghStores,BOOL fDontAddRootCert,CERT_TRUST_STATUS * pChainTrustStatus)
{
DWORD i;
CERT_CHAIN_ENGINE_CONFIG CertChainEngineConfig;
HCERTCHAINENGINE hCertChainEngine = NULL;
PCCERT_CHAIN_CONTEXT pCertChainContext = NULL;
CERT_CHAIN_PARA CertChainPara;
BOOL fRet = TRUE;
PCCERT_CONTEXT pTempCertContext = NULL;
//
// create a new chain engine, then build the chain
//
memset(&CertChainEngineConfig, 0, sizeof(CertChainEngineConfig));
CertChainEngineConfig.cbSize = sizeof(CertChainEngineConfig);
CertChainEngineConfig.cAdditionalStore = cStores;
CertChainEngineConfig.rghAdditionalStore = rghStores;
CertChainEngineConfig.dwFlags = CERT_CHAIN_USE_LOCAL_MACHINE_STORE;
if (!CertCreateCertificateChainEngine(&CertChainEngineConfig, &hCertChainEngine))
{
goto AddChainToStore_Error;
}
memset(&CertChainPara, 0, sizeof(CertChainPara));
CertChainPara.cbSize = sizeof(CertChainPara);
if (!CertGetCertificateChain(hCertChainEngine,pCertContext,NULL,NULL,&CertChainPara,0,NULL,&pCertChainContext))
{
goto AddChainToStore_Error;
}
//
// make sure there is atleast 1 simple chain
//
if (pCertChainContext->cChain != 0)
{
i = 0;
while (i < pCertChainContext->rgpChain[0]->cElement)
{
//
// if we are supposed to skip the root cert,
// and we are on the root cert, then continue
//
if (fDontAddRootCert && (pCertChainContext->rgpChain[0]->rgpElement[i]->TrustStatus.dwInfoStatus & CERT_TRUST_IS_SELF_SIGNED))
{
i++;
continue;
}
CertAddCertificateContextToStore(hCertStore,pCertChainContext->rgpChain[0]->rgpElement[i]->pCertContext,CERT_STORE_ADD_REPLACE_EXISTING,&pTempCertContext);
//
// remove any private key property the certcontext may have on it.
//
if (pTempCertContext)
{
CertSetCertificateContextProperty(pTempCertContext, CERT_KEY_PROV_INFO_PROP_ID, 0, NULL);
CertFreeCertificateContext(pTempCertContext);
}
i++;
}
}
else
{
goto AddChainToStore_Error;
}
//
// if the caller wants the status, then set it
//
if (pChainTrustStatus != NULL)
{
pChainTrustStatus->dwErrorStatus = pCertChainContext->TrustStatus.dwErrorStatus;
pChainTrustStatus->dwInfoStatus = pCertChainContext->TrustStatus.dwInfoStatus;
}
AddChainToStore_Exit:
if (pCertChainContext != NULL)
{
CertFreeCertificateChain(pCertChainContext);
}
if (hCertChainEngine != NULL)
{
CertFreeCertificateChainEngine(hCertChainEngine);
}
return fRet;
AddChainToStore_Error:
fRet = FALSE;
goto AddChainToStore_Exit;
}
// This function is borrowed from trustapi.cpp
static BOOL TrustIsCertificateSelfSigned(PCCERT_CONTEXT pContext,DWORD dwEncoding, DWORD dwFlags)
{
if (!(pContext) || (dwFlags != 0))
{
SetLastError(ERROR_INVALID_PARAMETER);
return(FALSE);
}
if (!(CertCompareCertificateName(dwEncoding,&pContext->pCertInfo->Issuer,&pContext->pCertInfo->Subject)))
{
return(FALSE);
}
DWORD dwFlag;
dwFlag = CERT_STORE_SIGNATURE_FLAG;
if (!(CertVerifySubjectCertificateContext(pContext, pContext, &dwFlag)) ||
(dwFlag & CERT_STORE_SIGNATURE_FLAG))
{
return(FALSE);
}
return(TRUE);
}
STDMETHODIMP CIISCertObj::Copy(BSTR bstrDestinationServerName,BSTR bstrDestinationServerInstance,VARIANT varDestinationServerUserName, VARIANT varDestinationServerPassword)
{
return CopyOrMove(FALSE,bstrDestinationServerName,bstrDestinationServerInstance,varDestinationServerUserName,varDestinationServerPassword);
}
STDMETHODIMP CIISCertObj::Move(BSTR bstrDestinationServerName,BSTR bstrDestinationServerInstance,VARIANT varDestinationServerUserName, VARIANT varDestinationServerPassword)
{
return CopyOrMove(TRUE,bstrDestinationServerName,bstrDestinationServerInstance,varDestinationServerUserName,varDestinationServerPassword);
}
HRESULT CIISCertObj::CopyOrMove(BOOL bRemoveFromCertAfterCopy,BSTR bstrDestinationServerName,BSTR bstrDestinationServerInstance,VARIANT varDestinationServerUserName, VARIANT varDestinationServerPassword)
{
HRESULT hr = E_FAIL;
DWORD cbEncodedSize = 0;
char * pszEncodedString = NULL;
BOOL bGuessingUserNamePass = FALSE;
DWORD blob_cbData;
BYTE * blob_pbData = NULL;
BOOL blob_freeme = FALSE;
BOOL bPrivateKey = TRUE;
BOOL bCertChain = FALSE;
CString csDestinationServerName = bstrDestinationServerName;
CString csDestinationServerUserName;
CString csDestinationServerUserPassword;
CString csTempPassword;
IIISCertObj * pObj = NULL;
IIISCertObj * pObj2 = NULL;
BSTR bstrInstanceName = SysAllocString(m_InstanceName);
// if the optional parameter serverusername isn't empty, use that; otherwise, use...
if (V_VT(&varDestinationServerUserName) != VT_ERROR)
{
VARIANT varBstrUserName;
VariantInit(&varBstrUserName);
HRESULT hr = VariantChangeType(&varBstrUserName, &varDestinationServerUserName, 0, VT_BSTR);
if (FAILED(hr)){goto Copy_Exit;}
csDestinationServerUserName = V_BSTR(&varBstrUserName);
VariantClear(&varBstrUserName);
}
else
{
// it's empty so don't use it
//csDestinationServerUserName = varDestinationServerUserName;
bGuessingUserNamePass = TRUE;
csDestinationServerUserName = m_UserName;
}
// if the optional parameter serverusername isn't empty, use that; otherwise, use...
if (V_VT(&varDestinationServerPassword) != VT_ERROR)
{
VARIANT varBstrUserPassword;
VariantInit(&varBstrUserPassword);
HRESULT hr = VariantChangeType(&varBstrUserPassword, &varDestinationServerPassword, 0, VT_BSTR);
if (FAILED(hr)){goto Copy_Exit;}
csDestinationServerUserPassword = V_BSTR(&varBstrUserPassword);
VariantClear(&varBstrUserPassword);
}
else
{
if (TRUE == bGuessingUserNamePass)
{
csDestinationServerUserPassword = m_UserPassword;
}
else
{
// maybe the password was intended to be empty!
}
}
// --------------------------
// step 1.
// 1st of all check if we have access to
// both the servers!!!!
// --------------------------
// 1st we have to get the certblob from the Server#1
// so call export to get the data
hr = S_OK;
pObj = GetObject(&hr);
if (FAILED(hr))
{
return(hr);
}
// Logon to that server's CertObj.dll with the credentials supplied...
//
// if there were no credential's supplied then just use the ones that are in our object....
//
// if that doesn't work then try just the logged on user.
pObj2 = GetObject(&hr,csDestinationServerName,csDestinationServerUserName,csDestinationServerUserPassword);
if (FAILED(hr))
{
if (TRUE == bGuessingUserNamePass)
{
// try something else.
}
goto Copy_Exit;
}
//
// Create a unique password
//
// use the new secure password generator
// unfortunately this baby doesn't use unicode.
// so we'll call it and then convert it to unicode afterwards.
WCHAR * pwszPassword = CreatePassword(TEMP_PASSWORD_LENGTH);
// if its null -- ah, we can still use that...
BSTR bstrPassword = SysAllocString(pwszPassword);
// -----------------------------------
// step 2.
// okay we have access to both servers
// Grab the cert from server #1
// -----------------------------------
// Get data from the remote/local iis store return it back as a blob.
// The blob could be returned back as Base64 encoded so check that flag
hr = ExportToBlobProxy(pObj, bstrInstanceName, bstrPassword, bPrivateKey, bCertChain, &cbEncodedSize, &pszEncodedString);
if (FAILED(hr))
{
goto Copy_Exit;
}
int err;
// The data we got back was Base64 encoded to remove nulls.
// we need to decode it back to it's original format.
if( (err = Base64DecodeA(pszEncodedString,cbEncodedSize,NULL,&blob_cbData)) != ERROR_SUCCESS ||
(blob_pbData = (BYTE *) malloc(blob_cbData)) == NULL ||
(err = Base64DecodeA(pszEncodedString,cbEncodedSize,blob_pbData,&blob_cbData)) != ERROR_SUCCESS )
{
SetLastError(err);
hr = HRESULT_FROM_WIN32(err);
return hr;
}
blob_freeme = TRUE;
// -----------------------------------
// step 3.
// okay we have access to both servers
// we have the cert blob from server#1 in memory
// now we need to push this blob into the server#2
// -----------------------------------
hr = ImportFromBlobProxy(pObj2, bstrDestinationServerInstance, bstrPassword, blob_cbData, blob_pbData);
if (FAILED(hr))
{
goto Copy_Exit;
}
// we successfully copied the cert from machine #1 to machine #2.
// lets see if we need to delete the original cert!.
if (TRUE == bRemoveFromCertAfterCopy)
{
hr = pObj->RemoveCert(bstrInstanceName, bPrivateKey);
if (FAILED(hr))
{
goto Copy_Exit;
}
}
hr = S_OK;
Copy_Exit:
if (pwszPassword) {GlobalFree(pwszPassword);pwszPassword=NULL;}
if (blob_freeme){if (blob_pbData != NULL){free(blob_pbData);blob_pbData=NULL;}}
if (pszEncodedString != NULL){CoTaskMemFree(pszEncodedString);pszEncodedString=NULL;}
return hr;
}
// password categories
enum {STRONG_PWD_UPPER=0,STRONG_PWD_LOWER,STRONG_PWD_NUM,STRONG_PWD_PUNC};
#define STRONG_PWD_CATS (STRONG_PWD_PUNC + 1)
#define NUM_LETTERS 26
#define NUM_NUMBERS 10
#define MIN_PWD_LEN 8
// password must contain at least one each of:
// uppercase, lowercase, punctuation and numbers
DWORD CreateGoodPassword(BYTE *szPwd, DWORD dwLen)
{
if (dwLen-1 < MIN_PWD_LEN)
{
return ERROR_PASSWORD_RESTRICTION;
}
HCRYPTPROV hProv;
DWORD dwErr = 0;
if (CryptAcquireContext(&hProv,NULL,NULL,PROV_RSA_FULL,CRYPT_VERIFYCONTEXT) == FALSE)
{
return GetLastError();
}
// zero it out and decrement the size to allow for trailing '\0'
ZeroMemory(szPwd,dwLen);
dwLen--;
// generate a pwd pattern, each byte is in the range
// (0..255) mod STRONG_PWD_CATS
// this indicates which character pool to take a char from
BYTE *pPwdPattern = new BYTE[dwLen];
BOOL fFound[STRONG_PWD_CATS];
do
{
// bug!bug! does CGR() ever fail?
CryptGenRandom(hProv,dwLen,pPwdPattern);
fFound[STRONG_PWD_UPPER] =
fFound[STRONG_PWD_LOWER] =
fFound[STRONG_PWD_PUNC] =
fFound[STRONG_PWD_NUM] = FALSE;
for (DWORD i=0; i < dwLen; i++)
{
fFound[pPwdPattern[i] % STRONG_PWD_CATS] = TRUE;
}
// check that each character category is in the pattern
} while (!fFound[STRONG_PWD_UPPER] || !fFound[STRONG_PWD_LOWER] || !fFound[STRONG_PWD_PUNC] || !fFound[STRONG_PWD_NUM]);
// populate password with random data
// this, in conjunction with pPwdPattern, is
// used to determine the actual data
CryptGenRandom(hProv,dwLen,szPwd);
for (DWORD i=0; i < dwLen; i++)
{
BYTE bChar = 0;
// there is a bias in each character pool because of the % function
switch (pPwdPattern[i] % STRONG_PWD_CATS)
{
case STRONG_PWD_UPPER : bChar = 'A' + szPwd[i] % NUM_LETTERS;
break;
case STRONG_PWD_LOWER : bChar = 'a' + szPwd[i] % NUM_LETTERS;
break;
case STRONG_PWD_NUM : bChar = '0' + szPwd[i] % NUM_NUMBERS;
break;
case STRONG_PWD_PUNC :
default:
char *szPunc="!@#$%^&*()_-+=[{]};:\'\"<>,./?\\|~`";
DWORD dwLenPunc = lstrlenA(szPunc);
bChar = szPunc[szPwd[i] % dwLenPunc];
break;
}
szPwd[i] = bChar;
}
delete pPwdPattern;
if (hProv != NULL)
{
CryptReleaseContext(hProv,0);
}
return dwErr;
}
// Creates a secure password
// caller must GlobalFree Return pointer
// iSize = size of password to create
LPTSTR CreatePassword(int iSize)
{
LPTSTR pszPassword = NULL;
BYTE *szPwd = new BYTE[iSize];
DWORD dwPwdLen = iSize;
int i = 0;
// use the new secure password generator
// unfortunately this baby doesn't use unicode.
// so we'll call it and then convert it to unicode afterwards.
if (0 == CreateGoodPassword(szPwd,dwPwdLen))
{
#if defined(UNICODE) || defined(_UNICODE)
// convert it to unicode and copy it back into our unicode buffer.
// compute the length
i = MultiByteToWideChar(CP_ACP, 0, (LPSTR) szPwd, -1, NULL, 0);
if (i <= 0)
{goto CreatePassword_Exit;}
pszPassword = (LPTSTR) GlobalAlloc(GPTR, i * sizeof(TCHAR));
if (!pszPassword)
{goto CreatePassword_Exit;}
i = MultiByteToWideChar(CP_ACP, 0, (LPSTR) szPwd, -1, pszPassword, i);
if (i <= 0)
{
GlobalFree(pszPassword);
pszPassword = NULL;
goto CreatePassword_Exit;
}
// make sure ends with null
pszPassword[i - 1] = 0;
#else
pszPassword = (LPSTR) GlobalAlloc(GPTR, _tcslen((LPTSTR) szPwd) * sizeof(TCHAR));
#endif
}
CreatePassword_Exit:
if (szPwd){delete szPwd;szPwd=NULL;}
return pszPassword;
}
Reference in a new issue Copy permalink