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79 lines
6.2 KiB
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--><title>mod_speling - Apache HTTP Server</title><link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /><link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /><link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link href="../images/favicon.ico" rel="shortcut icon" /></head><body><div id="page-header"><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p><p class="apache">Apache HTTP Server Version 2.0</p><img alt="" src="../images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div><div id="path"><a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="../">Version 2.0</a> > <a href="./">Modules</a></div><div id="page-content"><div id="preamble"><h1>Apache Module mod_speling</h1><table class="module"><tr><th><a href="module-dict.html#Description">Description:
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</a></th><td>Attempts to correct mistaken URLs that
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users might have entered by ignoring capitalization and by
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allowing up to one misspelling</td></tr><tr><th><a href="module-dict.html#Status">Status:
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</a></th><td>Extension</td></tr><tr><th><a href="module-dict.html#ModuleIdentifier">Module<EFBFBD>Identifier:
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</a></th><td>speling_module</td></tr><tr><th><a href="module-dict.html#SourceFile">Source<EFBFBD>File:
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</a></th><td>mod_speling.c</td></tr></table><h3>Summary</h3>
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<p>Requests to documents sometimes cannot be served by the core
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apache server because the request was misspelled or
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miscapitalized. This module addresses this problem by trying to
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find a matching document, even after all other modules gave up.
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It does its work by comparing each document name in the
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requested directory against the requested document name
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<strong>without regard to case</strong>, and allowing
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<strong>up to one misspelling</strong> (character insertion /
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omission / transposition or wrong character). A list is built
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with all document names which were matched using this
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strategy.</p>
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<p>If, after scanning the directory,</p>
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<ul>
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<li>no matching document was found, Apache will proceed as
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usual and return a "document not found" error.</li>
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<li>only one document is found that "almost" matches the
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request, then it is returned in the form of a redirection
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response.</li>
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<li>more than one document with a close match was found, then
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the list of the matches is returned to the client, and the
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client can select the correct candidate.</li>
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</ul>
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</div><div id="quickview"><h3 class="directives">Directives</h3><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#checkspelling">CheckSpelling</a></li></ul></div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="directive-section"><h2><a name="CheckSpelling" id="CheckSpelling">CheckSpelling</a> <a name="checkspelling" id="checkspelling">Directive</a></h2><table class="directive"><tr><th><a href="directive-dict.html#Description">Description:
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</a></th><td>Enables the spelling
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module</td></tr><tr><th><a href="directive-dict.html#Syntax">Syntax:
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</a></th><td>CheckSpelling on|off</td></tr><tr><th><a href="directive-dict.html#Default">Default:
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</a></th><td><code>CheckSpelling Off</code></td></tr><tr><th><a href="directive-dict.html#Context">Context:
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</a></th><td>server config, virtual host, directory, .htaccess</td></tr><tr><th><a href="directive-dict.html#Override">Override:
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</a></th><td>Options</td></tr><tr><th><a href="directive-dict.html#Status">Status:
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</a></th><td>Extension</td></tr><tr><th><a href="directive-dict.html#Module">Module:
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</a></th><td>mod_speling</td></tr><tr><th><a href="directive-dict.html#Compatibility">Compatibility:
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</a></th><td>CheckSpelling was available as a separately available
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module for Apache 1.1, but was limited to miscapitalizations. As
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of Apache 1.3, it is part of the Apache distribution. Prior to Apache
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1.3.2, the CheckSpelling directive was only available in the
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"server" and "virtual host" contexts.</td></tr></table>
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<p>This directive enables or disables the spelling module. When
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enabled, keep in mind that</p>
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<ul>
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<li>the directory scan which is necessary for the spelling
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correction will have an impact on the server's performance
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when many spelling corrections have to be performed at the
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same time.</li>
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<li>the document trees should not contain sensitive files
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which could be matched inadvertently by a spelling
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"correction".</li>
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<li>the module is unable to correct misspelled user names (as
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in <code>http://my.host/~apahce/</code>), just file names or
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directory names.</li>
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<li>spelling corrections apply strictly to existing files, so
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a request for the <code><Location /status></code> may
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get incorrectly treated as the negotiated file
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"<code>/stats.html</code>".</li>
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</ul>
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</div></div><div id="footer"><p class="apache">Maintained by the <a href="http://httpd.apache.org/docs-project/">Apache HTTP Server Documentation Project</a></p><p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="../faq/">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div></body></html> |