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# <@LICENSE> # Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to you under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at: # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # </@LICENSE> package Mail::SpamAssassin::BayesStore::SDBM; use strict; use warnings; # use bytes; use re 'taint'; use Fcntl; use Mail::SpamAssassin::BayesStore::DBM; use Mail::SpamAssassin::Logger; # our @DBNAMES; # <---- unused! our @ISA = qw( Mail::SpamAssassin::BayesStore::DBM ); sub HAS_DBM_MODULE { my ($self) = @_; if (exists($self->{has_dbm_module})) { return $self->{has_dbm_module}; } $self->{has_dbm_module} = eval { require SDBM_File; }; } sub DBM_MODULE { return "SDBM_File"; } # Possible file extensions used by the kinds of database files SDBM_File # might create. We need these so we can create a new file and rename # it into place. sub DB_EXTENSIONS { return ('.pag', '.dir'); } sub _unlink_file { my ($self, $filename) = @_; for my $ext ($self->DB_EXTENSIONS) { unlink $filename . $ext; } } sub _rename_file { my ($self, $sourcefilename, $targetfilename) = @_; for my $ext ($self->DB_EXTENSIONS) { return 0 unless (rename($sourcefilename . $ext, $targetfilename . $ext)); } return 1; } # this is called directly from sa-learn(1). sub perform_upgrade { return 1; } 1;