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diff --git a/man/man5/sqlite_table.5 b/man/man5/sqlite_table.5 new file mode 100644 index 0000000..c065597 --- /dev/null +++ b/man/man5/sqlite_table.5 @@ -0,0 +1,284 @@ +.TH SQLITE_TABLE 5 +.ad +.fi +.SH NAME +sqlite_table +\- +Postfix SQLite configuration +.SH "SYNOPSIS" +.na +.nf +\fBpostmap \-q "\fIstring\fB" sqlite:/etc/postfix/\fIfilename\fR + +\fBpostmap \-q \- sqlite:/etc/postfix/\fIfilename\fB <\fIinputfile\fR +.SH DESCRIPTION +.ad +.fi +The Postfix mail system uses optional tables for address +rewriting or mail routing. These tables are usually in +\fBdbm\fR or \fBdb\fR format. + +Alternatively, lookup tables can be specified as SQLite databases. +In order to use SQLite lookups, define an SQLite source as a lookup +table in main.cf, for example: +.nf + alias_maps = sqlite:/etc/postfix/sqlite\-aliases.cf +.fi + +The file /etc/postfix/sqlite\-aliases.cf has the same format as +the Postfix main.cf file, and can specify the parameters +described below. +.SH "LIST MEMBERSHIP" +.na +.nf +.ad +.fi +When using SQL to store lists such as $mynetworks, +$mydestination, $relay_domains, $local_recipient_maps, +etc., it is important to understand that the table must +store each list member as a separate key. The table lookup +verifies the *existence* of the key. See "Postfix lists +versus tables" in the DATABASE_README document for a +discussion. + +Do NOT create tables that return the full list of domains +in $mydestination or $relay_domains etc., or IP addresses +in $mynetworks. + +DO create tables with each matching item as a key and with +an arbitrary value. With SQL databases it is not uncommon to +return the key itself or a constant value. +.SH "SQLITE PARAMETERS" +.na +.nf +.ad +.fi +.IP "\fBdbpath\fR" +The SQLite database file location. Example: +.nf + dbpath = customer_database +.fi +.IP "\fBquery\fR" +The SQL query template used to search the database, where \fB%s\fR +is a substitute for the address Postfix is trying to resolve, +e.g. +.nf + query = SELECT replacement FROM aliases WHERE mailbox = '%s' +.fi + +This parameter supports the following '%' expansions: +.RS +.IP "\fB%%\fR" +This is replaced by a literal '%' character. +.IP "\fB%s\fR" +This is replaced by the input key. +SQL quoting is used to make sure that the input key does not +add unexpected metacharacters. +.IP "\fB%u\fR" +When the input key is an address of the form user@domain, \fB%u\fR +is replaced by the SQL quoted local part of the address. +Otherwise, \fB%u\fR is replaced by the entire search string. +If the localpart is empty, the query is suppressed and returns +no results. +.IP "\fB%d\fR" +When the input key is an address of the form user@domain, \fB%d\fR +is replaced by the SQL quoted domain part of the address. +Otherwise, the query is suppressed and returns no results. +.IP "\fB%[SUD]\fR" +The upper\-case equivalents of the above expansions behave in the +\fBquery\fR parameter identically to their lower\-case counter\-parts. +With the \fBresult_format\fR parameter (see below), they expand the +input key rather than the result value. +.IP "\fB%[1\-9]\fR" +The patterns %1, %2, ... %9 are replaced by the corresponding +most significant component of the input key's domain. If the +input key is \fIuser@mail.example.com\fR, then %1 is \fBcom\fR, +%2 is \fBexample\fR and %3 is \fBmail\fR. If the input key is +unqualified or does not have enough domain components to satisfy +all the specified patterns, the query is suppressed and returns +no results. +.RE +.IP +The \fBdomain\fR parameter described below limits the input +keys to addresses in matching domains. When the \fBdomain\fR +parameter is non\-empty, SQL queries for unqualified addresses +or addresses in non\-matching domains are suppressed +and return no results. + +This parameter is available with Postfix 2.2. In prior releases +the SQL query was built from the separate parameters: +\fBselect_field\fR, \fBtable\fR, \fBwhere_field\fR and +\fBadditional_conditions\fR. The mapping from the old parameters +to the equivalent query is: + +.nf + SELECT [\fBselect_field\fR] + FROM [\fBtable\fR] + WHERE [\fBwhere_field\fR] = '%s' + [\fBadditional_conditions\fR] +.fi + +The '%s' in the \fBWHERE\fR clause expands to the escaped search string. +With Postfix 2.2 these legacy parameters are used if the \fBquery\fR +parameter is not specified. + +NOTE: DO NOT put quotes around the query parameter. +.IP "\fBresult_format (default: \fB%s\fR)\fR" +Format template applied to result attributes. Most commonly used +to append (or prepend) text to the result. This parameter supports +the following '%' expansions: +.RS +.IP "\fB%%\fR" +This is replaced by a literal '%' character. +.IP "\fB%s\fR" +This is replaced by the value of the result attribute. When +result is empty it is skipped. +.IP "\fB%u\fR +When the result attribute value is an address of the form +user@domain, \fB%u\fR is replaced by the local part of the +address. When the result has an empty localpart it is skipped. +.IP "\fB%d\fR" +When a result attribute value is an address of the form +user@domain, \fB%d\fR is replaced by the domain part of +the attribute value. When the result is unqualified it +is skipped. +.IP "\fB%[SUD1\-9]\fR" +The upper\-case and decimal digit expansions interpolate +the parts of the input key rather than the result. Their +behavior is identical to that described with \fBquery\fR, +and in fact because the input key is known in advance, queries +whose key does not contain all the information specified in +the result template are suppressed and return no results. +.RE +.IP +For example, using "result_format = smtp:[%s]" allows one +to use a mailHost attribute as the basis of a transport(5) +table. After applying the result format, multiple values +are concatenated as comma separated strings. The expansion_limit +and parameter explained below allows one to restrict the number +of values in the result, which is especially useful for maps that +must return at most one value. + +The default value \fB%s\fR specifies that each result value should +be used as is. + +This parameter is available with Postfix 2.2 and later. + +NOTE: DO NOT put quotes around the result format! +.IP "\fBdomain (default: no domain list)\fR" +This is a list of domain names, paths to files, or "type:table" +databases. When specified, only fully qualified search +keys with a *non\-empty* localpart and a matching domain +are eligible for lookup: 'user' lookups, bare domain lookups +and "@domain" lookups are not performed. This can significantly +reduce the query load on the SQLite server. +.nf + domain = postfix.org, hash:/etc/postfix/searchdomains +.fi + +It is best not to use SQL to store the domains eligible +for SQL lookups. + +This parameter is available with Postfix 2.2 and later. + +NOTE: DO NOT define this parameter for local(8) aliases, +because the input keys are always unqualified. +.IP "\fBexpansion_limit (default: 0)\fR" +A limit on the total number of result elements returned +(as a comma separated list) by a lookup against the map. +A setting of zero disables the limit. Lookups fail with a +temporary error if the limit is exceeded. Setting the +limit to 1 ensures that lookups do not return multiple +values. +.SH "OBSOLETE MAIN.CF PARAMETERS" +.na +.nf +.ad +.fi +For compatibility with other Postfix lookup tables, SQLite +parameters can also be defined in main.cf. In order to do that, +specify as SQLite source a name that doesn't begin with a slash +or a dot. The SQLite parameters will then be accessible as the +name you've given the source in its definition, an underscore, +and the name of the parameter. For example, if the map is +specified as "sqlite:\fIsqlitename\fR", the parameter "query" +would be defined in main.cf as "\fIsqlitename\fR_query". +.SH "OBSOLETE QUERY INTERFACE" +.na +.nf +.ad +.fi +This section describes an interface that is deprecated as +of Postfix 2.2. It is replaced by the more general \fBquery\fR +interface described above. If the \fBquery\fR parameter +is defined, the legacy parameters described here ignored. +Please migrate to the new interface as the legacy interface +may be removed in a future release. + +The following parameters can be used to fill in a +SELECT template statement of the form: + +.nf + SELECT [\fBselect_field\fR] + FROM [\fBtable\fR] + WHERE [\fBwhere_field\fR] = '%s' + [\fBadditional_conditions\fR] +.fi + +The specifier %s is replaced by the search string, and is +escaped so if it contains single quotes or other odd characters, +it will not cause a parse error, or worse, a security problem. +.IP "\fBselect_field\fR" +The SQL "select" parameter. Example: +.nf + \fBselect_field\fR = forw_addr +.fi +.IP "\fBtable\fR" +The SQL "select .. from" table name. Example: +.nf + \fBtable\fR = mxaliases +.fi +.IP "\fBwhere_field\fR +The SQL "select .. where" parameter. Example: +.nf + \fBwhere_field\fR = alias +.fi +.IP "\fBadditional_conditions\fR +Additional conditions to the SQL query. Example: +.nf + \fBadditional_conditions\fR = AND status = 'paid' +.fi +.SH "SEE ALSO" +.na +.nf +postmap(1), Postfix lookup table maintenance +postconf(5), configuration parameters +ldap_table(5), LDAP lookup tables +mysql_table(5), MySQL lookup tables +pgsql_table(5), PostgreSQL lookup tables +.SH "README FILES" +.na +.nf +.ad +.fi +Use "\fBpostconf readme_directory\fR" or +"\fBpostconf html_directory\fR" to locate this information. +.na +.nf +DATABASE_README, Postfix lookup table overview +SQLITE_README, Postfix SQLITE howto +.SH "LICENSE" +.na +.nf +.ad +.fi +The Secure Mailer license must be distributed with this software. +.SH HISTORY +.ad +.fi +SQLite support was introduced with Postfix version 2.8. +.SH "AUTHOR(S)" +.na +.nf +Original implementation by: +Axel Steiner |