doc/db-backend.txt

   1 $Id$
   2
   3
   4 Storing private addressbooks and preferences in a database
   5 ==========================================================
   6
   7
   8 On sites with many users you might want to store your user data in a
   9 database instead of in files. This document describes how to configure
  10 SquirrelMail to do this.
  11
  12 Methods for storing both personal addressbooks and user preferences in
  13 a database is included as a part of the distribution.
  14
  15
  16
  17 Configuring PEAR DB
  18 -------------------
  19
  20 To work you must install the PEAR classes that is a part of PHP. Make
  21 sure the directory where the PEAR files are located is a part of your
  22 include path. See the PHP documentation for info on how to do that.
  23
  24
  25
  26 Configuring addressbooks in database
  27 ------------------------------------
  28
  29 First you need to create a database and a table to store the data in.
  30 Create a database user with access to read and write in that table.
  31
  32 For MySQL you would normally do something like:
  33
  34  (from the command line)
  35  # mysqladmin create squirrelmail
  36
  37  (from the mysql client)
  38  mysql> GRANT select,insert,update,delete ON squirrelmail.*
  39               TO squrreluser@localhost IDENTIFIED BY 'sqpassword';
  40
  41 The table structure should be similar to this (for MySQL):
  42
  43    CREATE TABLE address (
  44      owner varchar(128) DEFAULT '' NOT NULL,
  45      nickname varchar(16) DEFAULT '' NOT NULL,
  46      firstname varchar(128) DEFAULT '' NOT NULL,
  47      lastname varchar(128) DEFAULT '' NOT NULL,
  48      email varchar(128) DEFAULT '' NOT NULL,
  49      label varchar(255),
  50      PRIMARY KEY (owner,nickname),
  51      KEY firstname (firstname,lastname)
  52    );
  53
  54
  55 Next, edit config/config.php and add a DSN (Data Source Name) for the
  56 database. It should look something like:
  57
  58  $addrbook_dsn = 'mysql://squirreluser:sqpassword@localhost/squirrelmail';
  59
  60 From now on all users' personal addressbooks will be stored in a
  61 database.
  62
  63
  64
  65 Configuring preferences in database
  66 -----------------------------------
  67
  68 There is no easy way to do this yet. You will have to remove
  69 functions/prefs.php and replace it with functions/db_prefs.php. Then
  70 edit the new functions/prefs.php (db_prefs.php) and change the $DSN to
  71 point to a database you create (can be the same you use for
  72 addressbooks).  Create a table similar to this (for MySQL):
  73
  74   CREATE TABLE userprefs (
  75     user varchar(128) DEFAULT '' NOT NULL,
  76     prefkey varchar(64) DEFAULT '' NOT NULL,
  77     prefval BLOB DEFAULT '' NOT NULL,
  78     PRIMARY KEY (user,prefkey)
  79   );
  80
  81
  82 Default preferences can be set by altering the $default array in
  83 prefs.php (db_prefs.php).
  84