internal static Transaction2FindFirst2Response GetSubcommandResponse(SMB1Header header, uint maxDataCount, Transaction2FindFirst2Request subcommand, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
string fileNamePattern = subcommand.FileName;
if (!fileNamePattern.StartsWith(@"\"))
{
fileNamePattern = @"\" + fileNamePattern;
}
List <QueryDirectoryFileInformation> entries;
FileInformationClass informationClass;
try
{
informationClass = FindInformationHelper.ToFileInformationClass(subcommand.InformationLevel);
}
catch (UnsupportedInformationLevelException)
{
state.LogToServer(Severity.Verbose, "FindFirst2: Unsupported information level: {0}.", subcommand.InformationLevel);
header.Status = NTStatus.STATUS_OS2_INVALID_LEVEL;
return(null);
}
NTStatus searchStatus = SMB1FileStoreHelper.QueryDirectory(out entries, share.FileStore, fileNamePattern, informationClass, session.SecurityContext);
if (searchStatus != NTStatus.STATUS_SUCCESS)
{
state.LogToServer(Severity.Verbose, "FindFirst2: Searched for '{0}{1}', NTStatus: {2}", share.Name, fileNamePattern, searchStatus.ToString());
header.Status = searchStatus;
return(null);
}
// We ignore SearchAttributes
state.LogToServer(Severity.Information, "FindFirst2: Searched for '{0}{1}', found {2} matching entries", share.Name, fileNamePattern, entries.Count);
// [MS-CIFS] If no matching entries are found, the server SHOULD fail the request with STATUS_NO_SUCH_FILE.
if (entries.Count == 0)
{
header.Status = NTStatus.STATUS_NO_SUCH_FILE;
return(null);
}
bool returnResumeKeys = (subcommand.Flags & FindFlags.SMB_FIND_RETURN_RESUME_KEYS) > 0;
int entriesToReturn = Math.Min(subcommand.SearchCount, entries.Count);
List <QueryDirectoryFileInformation> segment = entries.GetRange(0, entriesToReturn);
int maxLength = (int)maxDataCount;
FindInformationList findInformationList;
try
{
findInformationList = FindInformationHelper.ToFindInformationList(segment, header.UnicodeFlag, maxLength);
}
catch (UnsupportedInformationLevelException)
{
state.LogToServer(Severity.Verbose, "FindFirst2: Unsupported information level: {0}.", subcommand.InformationLevel);
header.Status = NTStatus.STATUS_OS2_INVALID_LEVEL;
return(null);
}
int returnCount = findInformationList.Count;
Transaction2FindFirst2Response response = new Transaction2FindFirst2Response();
response.SetFindInformationList(findInformationList, header.UnicodeFlag);
response.EndOfSearch = (returnCount == entries.Count);
// If [..] the search fit within a single response and SMB_FIND_CLOSE_AT_EOS is set in the Flags field,
// or if SMB_FIND_CLOSE_AFTER_REQUEST is set in the request,
// the server SHOULD return a SID field value of zero.
// This indicates that the search has been closed and is no longer active on the server.
if ((response.EndOfSearch && subcommand.CloseAtEndOfSearch) || subcommand.CloseAfterRequest)
{
response.SID = 0;
}
else
{
ushort?searchHandle = session.AddOpenSearch(entries, returnCount);
if (!searchHandle.HasValue)
{
header.Status = NTStatus.STATUS_OS2_NO_MORE_SIDS;
return(null);
}
response.SID = searchHandle.Value;
}
return(response);
}