internal static Transaction2FindNext2Response GetSubcommandResponse(SMB1Header header, Transaction2FindNext2Request subcommand, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
OpenSearch openSearch = session.GetOpenSearch(subcommand.SID);
if (openSearch == null)
{
header.Status = NTStatus.STATUS_INVALID_HANDLE;
return(null);
}
bool returnResumeKeys = (subcommand.Flags & FindFlags.SMB_FIND_RETURN_RESUME_KEYS) > 0;
int maxLength = (int)state.GetMaxDataCount(header.PID).Value;
int maxCount = Math.Min(openSearch.Entries.Count - openSearch.EnumerationLocation, subcommand.SearchCount);
List <QueryDirectoryFileInformation> segment = openSearch.Entries.GetRange(openSearch.EnumerationLocation, maxCount);
FindInformationList findInformationList;
try
{
findInformationList = SMB1FileStoreHelper.GetFindInformationList(segment, subcommand.InformationLevel, header.UnicodeFlag, returnResumeKeys, maxLength);
}
catch (UnsupportedInformationLevelException)
{
header.Status = NTStatus.STATUS_OS2_INVALID_LEVEL;
return(null);
}
int returnCount = findInformationList.Count;
Transaction2FindNext2Response response = new Transaction2FindNext2Response();
response.SetFindInformationList(findInformationList, header.UnicodeFlag);
openSearch.EnumerationLocation += returnCount;
response.EndOfSearch = (openSearch.EnumerationLocation == openSearch.Entries.Count);
if (response.EndOfSearch)
{
session.RemoveOpenSearch(subcommand.SID);
}
return(response);
}
internal static Transaction2FindFirst2Response GetSubcommandResponse(SMB1Header header, Transaction2FindFirst2Request subcommand, ISMBShare share, SMB1ConnectionState state)
{
SMB1Session session = state.GetSession(header.UID);
string fileNamePattern = subcommand.FileName;
List <QueryDirectoryFileInformation> entries;
FileInformationClass informationClass;
try
{
informationClass = GetFileInformationClass(subcommand.InformationLevel);
}
catch (UnsupportedInformationLevelException)
{
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)state.GetMaxDataCount(header.PID).Value;
FindInformationList findInformationList;
try
{
findInformationList = SMB1FileStoreHelper.GetFindInformationList(segment, subcommand.InformationLevel, header.UnicodeFlag, returnResumeKeys, maxLength);
}
catch (UnsupportedInformationLevelException)
{
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);
}