Exemple #1
0
NTSTATUS
RtlAllocateUnicodeStringFromSid(
    OUT PUNICODE_STRING StringSid,
    IN PSID Sid
    )
{
    NTSTATUS status = STATUS_SUCCESS;
    PWSTR resultBuffer = NULL;
    UNICODE_STRING result = { 0 };

    if (!StringSid)
    {
        status = STATUS_INVALID_PARAMETER;
        GOTO_CLEANUP();
    }

    status = RtlAllocateWC16StringFromSid(&resultBuffer, Sid);
    GOTO_CLEANUP_ON_STATUS(status);

    status = RtlUnicodeStringInitEx(&result, resultBuffer);
    GOTO_CLEANUP_ON_STATUS(status);
    resultBuffer = NULL;

    status = STATUS_SUCCESS;

cleanup:
    if (!NT_SUCCESS(status))
    {
        RtlUnicodeStringFree(&result);
    }
    RTL_FREE(&resultBuffer);

    if (StringSid)
    {
        *StringSid = result;
    }

    return status;
}
Exemple #2
0
NTSTATUS
SamrSrvDeleteAliasMember(
    handle_t IDL_handle,
    ACCOUNT_HANDLE hAlias,
    PSID pSid
    )
{
    const wchar_t wszFilterFmt[] = L"%ws='%ws'";

    NTSTATUS ntStatus = STATUS_SUCCESS;
    DWORD dwError = ERROR_SUCCESS;
    PACCOUNT_CONTEXT pAcctCtx = NULL;
    PDOMAIN_CONTEXT pDomCtx = NULL;
    PCONNECT_CONTEXT pConnCtx = NULL;
    PWSTR pwszGroupDn = NULL;
    PWSTR pwszSid = NULL;
    size_t sSidStrLen = 0;
    HANDLE hDirectory = NULL;
    PWSTR pwszBaseDn = NULL;
    WCHAR wszAttrDn[] = DS_ATTR_DISTINGUISHED_NAME;
    WCHAR wszAttrObjectClass[] = DS_ATTR_OBJECT_CLASS;
    WCHAR wszAttrObjectSid[] = DS_ATTR_OBJECT_SID;
    DWORD dwScope = 0;
    DWORD dwFilterLen = 0;
    PWSTR pwszFilter = NULL;
    PDIRECTORY_ENTRY pEntry = NULL;
    DWORD dwEntriesNum = 0;

    PWSTR wszAttributes[] = {
        wszAttrDn,
        wszAttrObjectClass,
        NULL
    };

    pAcctCtx = (PACCOUNT_CONTEXT)hAlias;

    if (pAcctCtx == NULL || pAcctCtx->Type != SamrContextAccount)
    {
        ntStatus = STATUS_INVALID_HANDLE;
        BAIL_ON_NTSTATUS_ERROR(ntStatus);
    }

    if (!(pAcctCtx->dwAccessGranted & ALIAS_ACCESS_REMOVE_MEMBER))
    {
        ntStatus = STATUS_ACCESS_DENIED;
        BAIL_ON_NTSTATUS_ERROR(ntStatus);
    }

    pDomCtx     = pAcctCtx->pDomCtx;
    pConnCtx    = pDomCtx->pConnCtx;
    hDirectory  = pConnCtx->hDirectory;
    pwszGroupDn = pAcctCtx->pwszDn;

    ntStatus = RtlAllocateWC16StringFromSid(&pwszSid,
                                            pSid);
    BAIL_ON_NTSTATUS_ERROR(ntStatus);

    dwError = LwWc16sLen(pwszSid, &sSidStrLen);
    BAIL_ON_LSA_ERROR(dwError);

    dwFilterLen = ((sizeof(wszAttrObjectClass)/sizeof(WCHAR) - 1)) +
                  sSidStrLen +
                  (sizeof(wszFilterFmt)/sizeof(wszFilterFmt[0]));

    dwError = LwAllocateMemory(sizeof(WCHAR) * dwFilterLen,
                               OUT_PPVOID(&pwszFilter));
    BAIL_ON_LSA_ERROR(dwError);

    if (sw16printfw(pwszFilter, dwFilterLen, wszFilterFmt,
                    wszAttrObjectSid, pwszSid) < 0)
    {
        ntStatus = LwErrnoToNtStatus(errno);
        BAIL_ON_NTSTATUS_ERROR(ntStatus);
    }

    dwError = DirectorySearch(hDirectory,
                              pwszBaseDn,
                              dwScope,
                              pwszFilter,
                              wszAttributes,
                              FALSE,
                              &pEntry,
                              &dwEntriesNum);
    BAIL_ON_LSA_ERROR(dwError);

    if (dwEntriesNum > 1)
    {
        ntStatus = STATUS_INTERNAL_ERROR;
    }
    else if (dwEntriesNum == 0)
    {
        ntStatus = STATUS_NO_SUCH_MEMBER;
    }
    BAIL_ON_NTSTATUS_ERROR(ntStatus);

    dwError = DirectoryRemoveFromGroup(hDirectory,
                                       pwszGroupDn,
                                       pEntry);
    BAIL_ON_LSA_ERROR(dwError);

cleanup:
    if (pEntry)
    {
        DirectoryFreeEntries(pEntry, dwEntriesNum);
    }

    LW_SAFE_FREE_MEMORY(pwszFilter);
    RTL_FREE(&pwszSid);

    if (ntStatus == STATUS_SUCCESS &&
        dwError != ERROR_SUCCESS)
    {
        ntStatus = LwWin32ErrorToNtStatus(dwError);
    }

    return ntStatus;

error:
    goto cleanup;
}