利用Vista中的远程协助

Question

在Windows XP上，有一种创建远程协助票证的已知方法。

http://msdn.microsoft.com/en-us/library/ms811079.aspx

但在Vista上，这似乎不起作用。如何在Vista或Windows7上做到这一点？

Answer 1

事实证明有两种方法。Microsoft API称为IRASrv，文档如下所示：

http://msdn.microsoft.com/en-us/library/cc240176(PROT.10).aspx

另一种方法是简单地调用msra.exe。使用密码和新手参数(例如msra.exe /saveasfile测试文件密码)。但是，这会通过密码对话框提示用户。

下面是调用IRASrv接口并生成远程协助连接字符串的示例代码。

COSERVERINFO            si; ::ZeroMemory( &si, sizeof( si ) );
MULTI_QI                qi; ::ZeroMemory( &qi, sizeof( qi ) );

HRESULT hr = S_OK;

BSTR bstrUserName     = SysAllocString(L"jon");
BSTR bstrDomainName   = SysAllocString(L"");
BSTR bstrPasswordStr     = SysAllocString(L"testpass");

// Get the security information entered by the user
_bstr_t bstrUser(bstrUserName);
_bstr_t bstrDomain(bstrDomainName);
_bstr_t bstrPassword(bstrPasswordStr);

// Set AuthIdentity
SEC_WINNT_AUTH_IDENTITY_W AuthIdentity = {
    (unsigned short*)bstrUserName,
    bstrUser.length(),
    (unsigned short*)bstrDomainName,
    bstrDomain.length(),
    (unsigned short*)bstrPasswordStr,
    bstrPassword.length(),
    SEC_WINNT_AUTH_IDENTITY_UNICODE 
};
COAUTHINFO AuthInfo = {
    RPC_C_AUTHN_WINNT, 
    RPC_C_AUTHZ_DEFAULT, 
    NULL, 
    RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // The authentication level used
    RPC_C_IMP_LEVEL_IMPERSONATE, 
    (COAUTHIDENTITY*)&AuthIdentity,
    EOAC_NONE 
};

si.pAuthInfo = &AuthInfo;
si.pwszName = bstrMachineName;
qi.pIID     = &(__uuidof(RAServerLib::IRASrv));

hr = ::CoCreateInstanceEx(
    __uuidof(RAServerLib::RASrv), NULL, CLSCTX_REMOTE_SERVER, 
    &si, 1, &qi );
if (FAILED(hr))
{
    return hr;
}
CComPtr<RAServerLib::IRASrv> prasrv;
hr = qi.pItf->QueryInterface(__uuidof(RAServerLib::IRASrv), (void**)&prasrv);
if (FAILED(hr))
{
    return hr;
}

LPWSTR pstr=NULL;

hr = prasrv->raw_GetNoviceUserInfo(&pstr);
if (FAILED(hr))
{
    return hr;
}
    pstr contains the Remote Assistance Connection String (type 2)