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<erlref>
<header>
<copyright>
<year>1998</year><year>2016</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
Licensed 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.
</legalnotice>
<title>mod_security</title>
<prepared>Mattias Nilsson</prepared>
<docno></docno>
<date>1997-11-18</date>
<rev>1.0</rev>
<file>mod_security.sgml</file>
</header>
<module>mod_security</module>
<modulesummary>Security Audit and Trailing Functionality</modulesummary>
<description>
<p>Security Audit and Trailing Functionality</p>
</description>
<funcs>
<func>
<name>block_user(User, Port, Dir, Seconds) -> true | {error, Reason}</name>
<name>block_user(User, Address, Port, Dir, Seconds) -> true | {error, Reason}</name>
<fsummary>Blocks a user from access to a directory for a certain amount of time.</fsummary>
<type>
<v>User = string()</v>
<v>Port = integer()</v>
<v>Address = {A,B,C,D} | string() | undefined</v>
<v>Dir = string()</v>
<v>Seconds = integer() | infinity</v>
<v>Reason = no_such_directory</v>
</type>
<desc>
<p><c>block_user/4</c> and <c>block_user/5</c> each blocks the user
<c>User</c> from directory <c>Dir</c> for a specified
amount of time.</p>
</desc>
</func>
<func>
<name>list_auth_users(Port) -> Users | []</name>
<name>list_auth_users(Address, Port) -> Users | []</name>
<name>list_auth_users(Port, Dir) -> Users | []</name>
<name>list_auth_users(Address, Port, Dir) -> Users | []</name>
<fsummary>Lists users that have authenticated within the <c>SecurityAuthTimeout</c>
time for a given address (if specified), port number, and directory
(if specified).</fsummary>
<type>
<v>Port = integer()</v>
<v>Address = {A,B,C,D} | string() | undefined</v>
<v>Dir = string()</v>
<v>Users = list() = [string()]</v>
</type>
<desc>
<p><c>list_auth_users/1</c>, <c>list_auth_users/2</c>, and
<c>list_auth_users/3</c> each returns a list of users that are
currently authenticated. Authentications are stored for
<c>SecurityAuthTimeout</c> seconds, and then discarded.</p>
</desc>
</func>
<func>
<name>list_blocked_users(Port) -> Users | []</name>
<name>list_blocked_users(Address, Port) -> Users | []</name>
<name>list_blocked_users(Port, Dir) -> Users | []</name>
<name>list_blocked_users(Address, Port, Dir) -> Users | []</name>
<fsummary>Lists users that are currently blocked from access to a
specified port number, for a given address (if specified).</fsummary>
<type>
<v>Port = integer()</v>
<v>Address = {A,B,C,D} | string() | undefined</v>
<v>Dir = string()</v>
<v>Users = list() = [string()]</v>
</type>
<desc>
<p><c>list_blocked_users/1</c>, <c>list_blocked_users/2</c>, and
<c>list_blocked_users/3</c> each returns a list of users that are
currently blocked from access.</p>
</desc>
</func>
<func>
<name>unblock_user(User, Port) -> true | {error, Reason}</name>
<name>unblock_user(User, Address, Port) -> true | {error, Reason}</name>
<name>unblock_user(User, Port, Dir) -> true | {error, Reason}</name>
<name>unblock_user(User, Address, Port, Dir) -> true | {error, Reason}</name>
<fsummary>Removes a blocked user from the block list.</fsummary>
<type>
<v>User = string()</v>
<v>Port = integer()</v>
<v>Address = {A,B,C,D} | string() | undefined</v>
<v>Dir = string()</v>
<v>Reason = term()</v>
</type>
<desc>
<p><c>unblock_user/2</c>, <c>unblock_user/3</c>, and
<c>unblock_user/4</c> each removes the user <c>User</c> from
the list of blocked users for <c>Port</c> (and <c>Dir</c>).</p>
</desc>
</func>
</funcs>
<section>
<marker id="callback_module"></marker>
<title>SecurityCallbackModule</title>
<p>The <c>SecurityCallbackModule</c> is a user-written module that can receive
events from the <c>mod_security</c> Erlang web server API module.
This module only exports the functions event/[4,5]
which are described here.
</p>
</section>
<funcs>
<func>
<name>Module:event(What, Port, Dir, Data) -> ignored</name>
<name>Module:event(What, Address, Port, Dir, Data) -> ignored</name>
<fsummary>Called whenever an event occurs in <c>mod_security</c>.</fsummary>
<type>
<v>What = atom()</v>
<v>Port = integer()</v>
<v>Address = {A,B,C,D} | string() <v>Dir = string()</v>
<v>Data = [Info]</v>
<v>Info = {Name, Value}</v>
</type>
<desc>
<marker id="callback_module_event"></marker>
<p><c>event/4</c> or <c>event/5</c> is called whenever an event
occurs in the <c>mod_security</c> Erlang web server API module.
(<c>event/4</c> is called if <c>Address</c> is undefined,
otherwise <c>event/5</c>.
Argument <c>What</c> specifies the type of event that has
occurred and is one of the following reasons:
</p>
<taglist>
<tag><c>auth_fail</c></tag>
<item><p>A failed user authentication.</p></item>
<tag><c>user_block</c></tag>
<item><p>A user is being blocked from access.</p></item>
<tag><c>user_unblock</c></tag>
<item><p>A user is being removed from the block list.</p></item>
</taglist>
<note>
<p>The event <c>user_unblock</c> is not triggered when
a user is removed from the block list explicitly using the
<c>unblock_user</c> function.</p>
</note>
</desc>
</func>
</funcs>
</erlref>