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| <div id="page-content"> |
| <div id="preamble"><h1>Apache Module mod_example_hooks</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_example_hooks.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_example_hooks.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ko/mod/mod_example_hooks.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
| </div> |
| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Illustrates the Apache module API</td></tr> |
| <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Experimental</td></tr> |
| <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>example_hooks_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_example_hooks.c</td></tr></table> |
| <h3>Summary</h3> |
| |
| <p>The files in the <code>modules/examples</code> directory |
| under the Apache distribution directory tree are provided as an |
| example to those that wish to write modules that use the Apache |
| API.</p> |
| |
| <p>The main file is <code>mod_example_hooks.c</code>, which |
| illustrates all the different callback mechanisms and call |
| syntaxes. By no means does an add-on module need to include |
| routines for all of the callbacks - quite the contrary!</p> |
| |
| <p>The example module is an actual working module. If you link |
| it into your server, enable the "example-hooks-handler" handler for a |
| location, and then browse to that location, you will see a |
| display of some of the tracing the example module did as the |
| various callbacks were made.</p> |
| </div> |
| <div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3> |
| <ul id="topics"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#compiling">Compiling the example_hooks module</a></li> |
| <li><img alt="" src="../images/down.gif" /> <a href="#using">Using the <code>mod_example_hooks</code> Module</a></li> |
| </ul><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#example">Example</a></li> |
| </ul> |
| <h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_example_hooks">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_example_hooks">Report a bug</a></li></ul><h3>See also</h3> |
| <ul class="seealso"> |
| <li><a href="#comments_section">Comments</a></li></ul></div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="section"> |
| <h2><a name="compiling" id="compiling">Compiling the example_hooks module</a></h2> |
| |
| <p>To include the example_hooks module in your server, follow the |
| steps below:</p> |
| |
| <ol> |
| <li> |
| Run <code class="program"><a href="../programs/configure.html">configure</a></code> with <code>--enable-example-hooks</code> |
| option.</li> |
| |
| <li>Make the server (run "<code>make</code>").</li> |
| </ol> |
| |
| <p>To add another module of your own:</p> |
| |
| <ol class="up-A"> |
| <li><code>cp modules/examples/mod_example_hooks.c |
| modules/new_module/<em>mod_myexample.c</em></code></li> |
| |
| <li>Modify the file.</li> |
| |
| <li>Create <code>modules/new_module/config.m4</code>. |
| <ol> |
| <li>Add <code>APACHE_MODPATH_INIT(new_module)</code>.</li> |
| <li>Copy APACHE_MODULE line with "example_hooks" from |
| <code>modules/examples/config.m4</code>.</li> |
| <li>Replace the first argument "example_hooks" with <em>myexample</em>.</li> |
| <li>Replace the second argument with brief description of your module. |
| It will be used in <code>configure --help</code>.</li> |
| <li>If your module needs additional C compiler flags, linker flags or |
| libraries, add them to CFLAGS, LDFLAGS and LIBS accordingly. |
| See other <code>config.m4</code> files in modules directory for |
| examples.</li> |
| <li>Add <code>APACHE_MODPATH_FINISH</code>.</li> |
| </ol> |
| </li> |
| |
| <li>Create <code>module/new_module/Makefile.in</code>. |
| If your module doesn't need special build instructions, |
| all you need to have in that file is |
| <code>include $(top_srcdir)/build/special.mk</code>.</li> |
| |
| <li>Run ./buildconf from the top-level directory.</li> |
| |
| <li>Build the server with --enable-myexample</li> |
| |
| </ol> |
| </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="section"> |
| <h2><a name="using" id="using">Using the <code>mod_example_hooks</code> Module</a></h2> |
| |
| <p>To activate the example_hooks module, include a block similar to |
| the following in your <code>httpd.conf</code> file:</p> |
| <pre class="prettyprint lang-config"><Location "/example-hooks-info"> |
| SetHandler example-hooks-handler |
| </Location></pre> |
| |
| |
| <p>As an alternative, you can put the following into a <a href="core.html#accessfilename"><code>.htaccess</code></a> file |
| and then request the file "test.example" from that location:</p> |
| <pre class="prettyprint lang-config">AddHandler example-hooks-handler ".example"</pre> |
| |
| |
| <p>After reloading/restarting your server, you should be able |
| to browse to this location and see the brief display mentioned |
| earlier.</p> |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="Example" id="Example">Example</a> <a name="example" id="example">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Demonstration directive to illustrate the Apache module |
| API</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>Example</code></td></tr> |
| <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> |
| <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Experimental</td></tr> |
| <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_example_hooks</td></tr> |
| </table> |
| <p>The <code class="directive">Example</code> directive just sets a demonstration |
| flag which the example module's content handler displays. It |
| takes no arguments. If you browse to an URL to which the |
| example-hooks content-handler applies, you will get a display of the |
| routines within the module and how and in what order they were |
| called to service the document request. The effect of this |
| directive one can observe under the point "<code>Example |
| directive declared here: YES/NO</code>".</p> |
| |
| </div> |
| </div> |
| <div class="bottomlang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_example_hooks.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_example_hooks.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ko/mod/mod_example_hooks.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
| </div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div> |
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