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13 | <h1>Courier MySQL authentication module</h1> |
14 | |
15 | <p>This module allows authentication information to be stored in a MySQL |
16 | database.</p> |
17 | <ul> |
18 | <li>Supports both physical and virtual mail accounts.<br /> |
19 | <br /> |
20 | </li> |
21 | <li>Can be configured to use either crypted or cleartext passwords (or |
22 | both). Cleartext passwords allow CRAM-MD5 authentication to be |
23 | implemented.</li> |
24 | </ul> |
25 | |
26 | <p>When <code>authmysql</code> is installed, a default configuration file, |
27 | <code>authmysqlrc</code> will be installed too. You must edit this file to |
28 | set up your MySQL authentication.</p> |
29 | |
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30 | <hr /> |
31 | |
32 | <p>Edit <code>authmysqlrc</code>, and initialize the following variables:</p> |
33 | <ul> |
34 | <li><code>MYSQL_SERVER</code> - MySQL server name (required).</li> |
35 | <li><code>MYSQL_PORT</code> - server port where MySQL accepts |
36 | connections.</li> |
37 | <li><code>MYSQL_SOCKET</code> - If MySQL is running on the same machine and |
38 | can accept connections from a filesystem socket, enter the path to the |
39 | filesystem socket here, and do not initialize SERVER/PORT.</li> |
40 | <li><code>MYSQL_USERNAME</code> - MySQL username with log in with |
41 | (required).</li> |
42 | <li><code>MYSQL_PASSWORD</code> - MySQL password with log in with |
43 | (required).</li> |
44 | <li><code>MYSQL_DATABASE</code> - MySQL database to log in to |
45 | (required).</li> |
46 | <li><code>MYSQL_SSL_KEY</code> - name of the field containing a SSL key path |
47 | (optional).</li> |
48 | <li><code>MYSQL_SSL_CERT</code> - name of the field containing a SSL |
49 | certificate path (optional).</li> |
50 | <li><code>MYSQL_SSL_CACERT</code> - name of the field containing a SSL CA |
51 | certificate (optional).</li> |
52 | <li><code>MYSQL_SSL_CAPATH</code> - name of the filend containing a name to a |
53 | directory that contains trusted SSL CA certificates in pem format. (optional).</li> |
54 | <li><code>MYSQL_SSL_CIPHER</code> - name of the field containing a SSL |
55 | cipher list (optional).</li> |
56 | <li><code>MYSQL_USER_TABLE</code> - name of the MySQL with the |
57 | authentication information (see below) (required).</li> |
58 | <li><code>MYSQL_LOGIN_FIELD</code> - field that contains the login id for |
59 | this account.</li> |
60 | <li><code>MYSQL_CRYPT_PWFIELD</code> - name of the field containing the |
61 | crypt-ed password (either <code>MYSQL_CRYPT_PWFIELD</code> or |
62 | <code>MYSQL_CLEAR_PWFIELD</code> is required). <strong>NOTE: this |
63 | password must be crypt-ed using the operating system's crypt function, |
64 | NOT MySQL's crypt function. MySQL's crypt() function is non-standard and |
65 | is not generally compatible with the operating system's crypt |
66 | function.</strong></li> |
67 | <li><code>MYSQL_CLEAR_PWFIELD</code> - name of the field containing the |
68 | cleartext password (either <code>MYSQL_CRYPT_PWFIELD</code> or |
69 | <code>MYSQL_CLEAR_PWFIELD</code> is required).</li> |
70 | <li><code>MYSQL_UID_FIELD</code> - field that contains the system userid |
71 | for this account.</li> |
72 | <li><code>MYSQL_GID_FIELD</code> - field that contains the system groupid |
73 | for this account.</li> |
74 | <li><code>MYSQL_MAILDIR_FIELD</code> - name of the field containing a |
75 | non-default location of the account's system mailbox (optional).</li> |
76 | <li><code>MYSQL_DEFAULTDELIVERY</code> - default mail delivery instructions |
77 | for the Courier mail server. If this field in the record is not empty, |
78 | its contents supercede the DEFAULTDELIVERY setting.</li> |
79 | <li><code>MYSQL_QUOTA_FIELD</code> - name of the field containing a maildir |
80 | quota (optional).</li> |
81 | <li><code>MYSQL_AUXOPTIONS</code> - auxiliary options. This field, if |
82 | defined, should consist of a <code>VARCHAR</code> consisting of a |
83 | comma-separate list of "<code>IDENTIFIER=VALUE</code>" pairs, that |
84 | specify per-account options. See INSTALL's description of the "Account |
85 | OPTIONS" setting for more information.</li> |
86 | <li><code>DEFAULT_DOMAIN</code> - if the user logs in without specifying |
87 | <code>@domain</code>, use the following domain (in this case the id field |
88 | must always contain <code>user@host</code>) (optional).</li> |
89 | <li><code>MYSQL_WHERE_CLAUSE</code> - optional freeform SQL that is |
90 | appended to the SQL query string.</li> |
91 | </ul> |
92 | |
93 | <p>Here's a recommended definition of <code>MYSQL_USER_TABLE</code>:</p> |
94 | <pre>CREATE TABLE passwd ( |
95 | id char(128) DEFAULT '' NOT NULL, |
96 | crypt char(128) DEFAULT '' NOT NULL, |
97 | clear char(128) DEFAULT '' NOT NULL, |
98 | name char(128) DEFAULT '' NOT NULL, |
99 | uid int(10) unsigned DEFAULT '65534' NOT NULL, |
100 | gid int(10) unsigned DEFAULT '65534' NOT NULL, |
101 | home char(255) DEFAULT '' NOT NULL, |
102 | maildir char(255) DEFAULT '' NOT NULL, |
103 | defaultdelivery char(255) DEFAULT '' NOT NULL, |
104 | quota char(255) DEFAULT '' NOT NULL, |
105 | options char(255) DEFAULT '' NOT NULL, |
106 | KEY id (id(128)) |
107 | );</pre> |
108 | |
109 | <p>Observe that a valid SQL expression may be used in place of any field |
110 | setting, since all that happens is that the contents of the settings are |
111 | inserted into an SQL SELECT statement. Specifically, the <code>options</code> |
112 | field may be replaced by several normal fields, such as |
113 | "<code>disablepop3</code>", "<code>disableimap</code>", |
114 | "<code>disablewebmail</code>", and "<code>sharedgroup</code>"; then |
115 | <code>MYSQL_AUXOPTIONS</code> would be set to:</p> |
116 | |
117 | <blockquote> |
118 | <code>CONCAT("disableimap=",disableimap,",disablepop3=",disablepop3,",disablewebmail=",disablewebmail,",sharedgroup=",sharedgroup)</code></blockquote> |
119 | |
120 | <p>This results in the expected comma-delimited options list, which is built |
121 | up from individual table fields.</p> |
122 | </body> |
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