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127 lines
4.8 KiB
HTML
127 lines
4.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org" />
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<title>Apache module mod_speling</title>
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</head>
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<!-- Background white, links blue (unvisited), navy (visited), red (active) -->
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<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
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vlink="#000080" alink="#FF0000">
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<!--#include virtual="header.html" -->
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<h1 align="CENTER">Module mod_speling</h1>
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<p>This module attempts to correct misspellings of URLs that
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users might have entered, by ignoring capitalization and by
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allowing up to one misspelling.</p>
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<p><a href="module-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="module-dict.html#SourceFile"
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rel="Help"><strong>Source File:</strong></a>
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mod_speling.c<br />
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<a href="module-dict.html#ModuleIdentifier"
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rel="Help"><strong>Module Identifier:</strong></a>
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speling_module<br />
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<a href="module-dict.html#Compatibility"
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rel="Help"><strong>Compatibility:</strong></a> Available in
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Apache 1.3 and later. Available as an External module in Apache
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1.1 and later.</p>
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<h2>Summary</h2>
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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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<br />
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<br />
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<h2>Directives</h2>
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<ul>
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<li><a href="#checkspelling">CheckSpelling</a></li>
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</ul>
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<hr />
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<!-- the HR is part of the directive description -->
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<h2><a id="checkspelling"
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name="checkspelling">CheckSpelling</a> directive</h2>
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<!--%plaintext <?INDEX {\tt CheckSpelling} directive> -->
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> CheckSpelling
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a> <code>CheckSpelling
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Off</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> server config, virtual
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host, directory, .htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> Options <br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Base<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_speling<br />
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<a href="directive-dict.html#Compatibility"
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rel="Help"><strong>Compatibility:</strong></a> CheckSpelling
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was available as a separately available module for Apache 1.1,
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but was limited to miscapitalizations. As of Apache 1.3, it is
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part of the Apache distribution. Prior to Apache 1.3.2, the
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<samp>CheckSpelling</samp> directive was only available in the
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"server" and "virtual host" contexts.
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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 <samp><Location /status></samp> may
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get incorrectly treated as the negotiated file
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"<samp>/stats.html</samp>".</li>
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</ul>
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<!--#include virtual="footer.html" -->
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</body>
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</html>
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