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.\"
.IX Title "Mail::SpamAssassin::SQLBasedAddrList 3"
.TH Mail::SpamAssassin::SQLBasedAddrList 3 2024-09-01 "perl v5.40.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
Mail::SpamAssassin::SQLBasedAddrList \- SpamAssassin SQL Based Auto Welcomelist
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 3
\&    my $factory = Mail::SpamAssassin::SQLBasedAddrList\->new()
\&    $spamtest\->set_persistent_addr_list_factory ($factory);
\&  ... call into SpamAssassin classes...
.Ve
.PP
SpamAssassin will call:
.PP
.Vb 3
\&    my $addrlist = $factory\->new_checker($spamtest);
\&    $entry = $addrlist\->get_addr_entry ($addr, $origip);
\&  ...
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
A SQL based persistent address list implementation.
.PP
See \f(CW\*(C`Mail::SpamAssassin::PersistentAddrList\*(C'\fR for more information.
.PP
Uses DBI::DBD module access to your favorite database (tested with
MySQL, SQLite and PostgreSQL) to store user auto-welcomelists.
.PP
The default table structure looks like this:
CREATE TABLE awl (
  username varchar(100) NOT NULL default '',
  email varchar(255) NOT NULL default '',
  ip varchar(40) NOT NULL default '',
  msgcount int(11) NOT NULL default '0',
  totscore float NOT NULL default '0',
  signedby varchar(255) NOT NULL default '',
  last_hit timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (username,email,signedby,ip)
) TYPE=MyISAM;
.PP
Your table definition may change depending on which database driver
you choose.  There is a config option to override the table name.
.PP
This module introduces several new config variables:
.PP
user_awl_dsn
.PP
user_awl_sql_username
.PP
user_awl_sql_password
.PP
user_awl_sql_table
.PP
user_awl_sql_override_username
.PP
see \f(CW\*(C`Mail::SpamAssassin::Conf\*(C'\fR for more information.
.SS new
.IX Subsection "new"
public class (Mail::SpamAssassin::SQLBasedAddrList) new ()
.PP
Description:
This method creates a new instance of the SQLBasedAddrList factory and calls
the parent's (PersistentAddrList) new method.
.SS new_checker
.IX Subsection "new_checker"
public instance (Mail::SpamAssassin::SQLBasedAddrList) new_checker (\e% \f(CW$main\fR)
.PP
Description:
This method is called to setup a new checker interface and return a blessed
copy of itself.  Here is where we setup the SQL database connection based
on the config values.
.SS get_addr_entry
.IX Subsection "get_addr_entry"
public instance (\e%) get_addr_entry (String \f(CW$addr\fR, String \f(CW$signedby\fR)
.PP
Description:
This method takes a given \f(CW$addr\fR and splits it between the email address
component and the ip component and performs a lookup in the database. If
nothing is found in the database then a blank entry hash is created and
returned, otherwise an entry containing the found information is returned.
If a with_awl_signer configuration option is enabled only addresses signed
by the given signing identity are taken into account, or, if \f(CW$signedby\fR is
undefined (or empty) only unsigned entries are considered.
.PP
A key, \f(CW\*(C`exists_p\*(C'\fR, is set to 1 if an entry already exists in the database,
otherwise it is set to 0.
.SS add_score
.IX Subsection "add_score"
public instance (\e%) add_score (\e% \f(CW$entry\fR, Integer \f(CW$score\fR)
.PP
Description:
This method adds a given \f(CW$score\fR to a given \f(CW$entry\fR.  If the entry was
marked as not existing in the database then an entry will be inserted,
otherwise a simple update will be performed.
.PP
NOTE: This code uses a self referential SQL call (ie set foo = foo + 1) which
is supported by most modern database backends, but not everything calling
itself a SQL database.
.SS remove_entry
.IX Subsection "remove_entry"
public instance () remove_entry (\e% \f(CW$entry\fR)
.PP
Description:
This method removes a given \f(CW$entry\fR from the database.  If the
ip portion of the entry address is equal to "none" then remove any
perl-IP entries for this address as well.
.SS finish
.IX Subsection "finish"
public instance () finish ()
.PP
Description:
This method provides the necessary cleanup for the address list.
.SS _unpack_addr
.IX Subsection "_unpack_addr"
private instance (String, String) _unpack_addr(string \f(CW$addr\fR)
.PP
Description:
This method splits an autowelcomelist address into it's two components,
email and ip address.