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<div id="page-content"><div id="preamble"><h1>Apache模块 mod_authz_owner</h1>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="module">
<tr><th><a href="module-dict.html#Description">说明</a></th><td>基于文件的所有者进行授权</td></tr>
<tr><th><a href="module-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">模块名</a></th><td>authz_owner_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">源文件</a></th><td>mod_authz_owner.c</td></tr>
<tr><th><a href="module-dict.html#Compatibility">兼容性</a></th><td>仅在 Apache 2.1 及以后的版本中可用</td></tr>
</table>
<h3>概述</h3>
<p>This module authorizes access to files by comparing the userid used
for HTTP authentication (the web userid) with the file-system owner or
group of the requested file. The supplied username and password
must be already properly verified by an authentication module,
such as <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code>或<code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>. <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code>
recognizes two arguments for the <code class="directive"><a href="../mod/core.html#require">Require</a></code> directive, <code>file-owner</code>和<code>file-group</code>, as follows:</p>
<dl>
<dt><code>file-owner</code></dt>
<dd>The supplied web-username must match the system's name for the
owner of the file being requested. That is, if the operating system
says the requested file is owned by <code>jones</code>, then the
username used to access it through the web must be <code>jones</code>
as well.</dd>
<dt><code>file-group</code></dt>
<dd>The name of the system group that owns the file must be present
in a group database, which is provided, for example, by <code class="module"><a href="../mod/mod_authz_groupfile.html">mod_authz_groupfile</a></code>或<code class="module"><a href="../mod/mod_authz_dbm.html">mod_authz_dbm</a></code>,
and the web-username must be a member of that group. For example, if
the operating system says the requested file is owned by (system)
group <code>accounts</code>, the group <code>accounts</code> must
appear in the group database and the web-username used in the request
must be a member of that group.</dd>
</dl>
<div class="note"><h3>注意</h3>
<p>If <code class="module"><a href="../mod/mod_authz_owner.html">mod_authz_owner</a></code> is used in order to authorize
a resource that is not actually present in the filesystem
(<em>i.e.</em> a virtual resource), it will deny the access.</p>
<p>Particularly it will never authorize <a href="../content-negotiation.html#multiviews">content negotiated
"MultiViews"</a> resources.</p>
</div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="examples" id="examples">Configuration Examples</a></h2>
<h3><a name="examples.file-owner" id="examples.file-owner">Require file-owner</a></h3>
<p>Consider a multi-user system running the Apache Web server, with
each user having his or her own files in <code>~/public_html/private</code>. Assuming that there is a single
<code class="directive"><a href="../mod/mod_authn_dbm.html#authdbmuserfile">AuthDBMUserFile</a></code> database
that lists all of their web-usernames, and that these usernames match
the system's usernames that actually own the files on the server, then
the following stanza would allow only the user himself access to his
own files. User <code>jones</code> would not be allowed to access
files in <code>/home/smith/public_html/private</code> unless they
were owned by <code>jones</code> instead of <code>smith</code>.</p>
<div class="example"><p><code>
<Directory /home/*/public_html/private><br />
<span class="indent">
AuthType Basic<br />
AuthName MyPrivateFiles<br />
AuthBasicProvider dbm<br />
AuthDBMUserFile /usr/local/apache2/etc/.htdbm-all<br />
Satisfy All<br />
Require file-owner<br />
</span>
</Directory>
</code></p></div>
<h3><a name="examples.file-group" id="examples.file-group">Require file-group</a></h3>
<p>Consider a system similar to the one described above, but with
some users that share their project files in
<code>~/public_html/project-foo</code>. The files are owned by the
system group <code>foo</code> and there is a single <code class="directive"><a href="../mod/mod_authz_dbm.html#authdbmgroupfile">AuthDBMGroupFile</a></code> database that
contains all of the web-usernames and their group membership,
<em>i.e.</em> they must be at least member of a group named
<code>foo</code>. So if <code>jones</code>和<code>smith</code>
are both member of the group <code>foo</code>, then both will be
authorized to access the <code>project-foo</code> directories of
each other.</p>
<div class="example"><p><code>
<Directory /home/*/public_html/project-foo><br />
<span class="indent">
AuthType Basic<br />
AuthName "Project Foo Files"<br />
AuthBasicProvider dbm<br />
<br />
# combined user/group database<br />
AuthDBMUserFile /usr/local/apache2/etc/.htdbm-all<br />
AuthDBMGroupFile /usr/local/apache2/etc/.htdbm-all<br />
<br />
Satisfy All<br />
Require file-group<br />
</span>
</Directory>
</code></p></div>
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="AuthzOwnerAuthoritative" id="AuthzOwnerAuthoritative">AuthzOwnerAuthoritative</a> <a name="authzownerauthoritative" id="authzownerauthoritative">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Sets whether authorization will be passed on to lower level
modules</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>AuthzOwnerAuthoritative On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>AuthzOwnerAuthoritative On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>AuthConfig</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_authz_owner</td></tr>
</table>
<p>Setting the <code class="directive">AuthzOwnerAuthoritative</code>
directive explicitly to <code>Off</code> allows for
user authorization to be passed on to lower level modules (as defined
in the <code>modules.c</code> files) if:</p>
<ul>
<li>in the case of <code>file-owner</code> the file-system owner does not
match the supplied web-username or could not be determined, or</li>
<li>in the case of <code>file-group</code> the file-system group does not
contain the supplied web-username or could not be determined.</li>
</ul>
<p>Note that setting the value to <code>Off</code> also allows the
combination of <code>file-owner</code>和<code>file-group</code>, so
access will be allowed if either one or the other (or both) match.</p>
<p>By default, control is not passed on and an authorization failure
will result in an "Authentication Required" reply. Not
setting it to <code>Off</code> thus keeps the system secure and forces
an NCSA compliant behaviour.</p>
</div>
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