| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" |
| "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta name="generator" content="HTML Tidy, see www.w3.org" /> |
| |
| <title>Apache module mod_alias</title> |
| </head> |
| <!-- Background white, links blue (unvisited), navy (visited), red (active) --> |
| |
| <body bgcolor="#FFFFFF" text="#000000" link="#0000FF" |
| vlink="#000080" alink="#FF0000"> |
| <!--#include virtual="header.html" --> |
| |
| <h1 align="CENTER">Module mod_alias</h1> |
| |
| <p>This module provides for mapping different parts of the host |
| filesystem in the document tree, and for URL redirection.</p> |
| |
| <p><a href="module-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="module-dict.html#SourceFile" |
| rel="Help"><strong>Source File:</strong></a> mod_alias.c<br /> |
| <a href="module-dict.html#ModuleIdentifier" |
| rel="Help"><strong>Module Identifier:</strong></a> |
| alias_module</p> |
| |
| <h2>Summary</h2> |
| |
| <p>The directives contained in this module allow for |
| manipulation and control of URLs as requests arrive at the |
| server. The <code>Alias</code> and <code>ScriptAlias</code> |
| directives are used to map between URLs and filesystem paths. |
| This allows for content which is not directly under the <a |
| href="core.html#documentroot"><code>DocumentRoot</code></a> to |
| be served as part of the web document tree. The |
| <code>ScriptAlias</code> directive has the additional effect of |
| marking the target directory as containing only CGI |
| scripts.</p> |
| |
| <p>The <code>Redirect</code> directives are used to instruct |
| clients to make a new request with a different URL. They are |
| often used when a resource has moved to a new location.</p> |
| |
| <p>A more powerful and flexible set of directives for |
| manipulating URLs is contained in the <a |
| href="mod_rewrite.html"><code>mod_rewrite</code></a> |
| module.</p> |
| |
| <h2>Directives</h2> |
| |
| <ul> |
| <li><a href="#alias">Alias</a></li> |
| |
| <li><a href="#aliasmatch">AliasMatch</a></li> |
| |
| <li><a href="#redirect">Redirect</a></li> |
| |
| <li><a href="#redirectmatch">RedirectMatch</a></li> |
| |
| <li><a href="#redirecttemp">RedirectTemp</a></li> |
| |
| <li><a href="#redirectperm">RedirectPermanent</a></li> |
| |
| <li><a href="#scriptalias">ScriptAlias</a></li> |
| |
| <li><a href="#scriptaliasmatch">ScriptAliasMatch</a></li> |
| </ul> |
| <hr /> |
| |
| <h2><a id="alias" name="alias">Alias directive</a></h2> |
| |
| <p> |
| <a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> Alias <em>URL-path |
| file-path</em>|<em>directory-path</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias</p> |
| |
| <p>The Alias directive allows documents to be stored in the |
| local filesystem other than under the <a |
| href="core.html#documentroot">DocumentRoot</a>. URLs with a |
| (%-decoded) path beginning with <em>url-path</em> will be |
| mapped to local files beginning with |
| <em>directory-filename</em>.</p> |
| |
| <p>Example:</p> |
| |
| <blockquote> |
| <code>Alias /image /ftp/pub/image</code> |
| </blockquote> |
| |
| <p>A request for http://myserver/image/foo.gif would cause the |
| server to return the file /ftp/pub/image/foo.gif.</p> |
| |
| <p>Note that if you include a trailing / on the |
| <em>url-path</em> then the server will require a trailing / in |
| order to expand the alias. That is, if you use <code>Alias |
| /icons/ /usr/local/apache/icons/</code> then the url |
| <code>/icons</code> will not be aliased.</p> |
| |
| <p>Note that you may need to specify additional <a |
| href="core.html#directory"><code><Directory></code></a> |
| sections which cover the <em>destination</em> of aliases. |
| Aliasing occurs before <code><Directory></code> sections |
| are checked, so only the destination of aliases are affected. |
| (Note however <a |
| href="core.html#location"><code><Location></code></a> |
| sections are run through once before aliases are performed, so |
| they will apply.)</p> |
| |
| <p>See also <a href="#scriptalias">ScriptAlias</a>.</p> |
| <hr /> |
| |
| <h2><a id="aliasmatch" name="aliasmatch">AliasMatch</a></h2> |
| |
| <p><a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> AliasMatch <em>regex |
| file-path</em>|<em>directory-path</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> Available in |
| Apache 1.3 and later</p> |
| |
| <p>This directive is equivalent to <a href="#alias">Alias</a>, |
| but makes use of standard regular expressions, instead of |
| simple prefix matching. The supplied regular expression is |
| matched against the URL-path, and if it matches, the server |
| will substitute any parenthesized matches into the given string |
| and use it as a filename. For example, to activate the |
| <code>/icons</code> directory, one might use:</p> |
| <pre> |
| AliasMatch ^/icons(.*) /usr/local/apache/icons$1 |
| </pre> |
| <hr /> |
| |
| <h2><a id="redirect" name="redirect">Redirect |
| directive</a></h2> |
| |
| <p> |
| <a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> Redirect |
| [<em>status</em>] <em>URL-path URL</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host, directory, .htaccess<br /> |
| <a href="directive-dict.html#Override" |
| rel="Help"><strong>Override:</strong></a> FileInfo<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> The directory |
| and .htaccess context's are only available in versions 1.1 and |
| later. The <em>status</em> argument is only available in Apache |
| 1.2 or later.</p> |
| |
| <p>The Redirect directive maps an old URL into a new one. The |
| new URL is returned to the client which attempts to fetch it |
| again with the new address. <em>URL-path</em> a (%-decoded) |
| path; any requests for documents beginning with this path will |
| be returned a redirect error to a new (%-encoded) URL beginning |
| with <em>URL</em>.</p> |
| |
| <p>Example:</p> |
| |
| <blockquote> |
| <code>Redirect /service http://foo2.bar.com/service</code> |
| </blockquote> |
| |
| <p>If the client requests http://myserver/service/foo.txt, it |
| will be told to access http://foo2.bar.com/service/foo.txt |
| instead.</p> |
| |
| <p><strong>Note:</strong> Redirect directives take precedence |
| over Alias and ScriptAlias directives, irrespective of their |
| ordering in the configuration file. Also, <em>URL-path</em> |
| must be a fully qualified URL, not a relative path, even when used |
| with .htaccess files or inside of <Directory> |
| sections.</p> |
| |
| <p>If no <em>status</em> argument is given, the redirect will |
| be "temporary" (HTTP status 302). This indicates to the client |
| that the resource has moved temporarily. The <em>status</em> |
| argument can be used to return other HTTP status codes:</p> |
| |
| <dl> |
| <dt>permanent</dt> |
| |
| <dd>Returns a permanent redirect status (301) indicating that |
| the resource has moved permanently.</dd> |
| |
| <dt>temp</dt> |
| |
| <dd>Returns a temporary redirect status (302). This is the |
| default.</dd> |
| |
| <dt>seeother</dt> |
| |
| <dd>Returns a "See Other" status (303) indicating that the |
| resource has been replaced.</dd> |
| |
| <dt>gone</dt> |
| |
| <dd>Returns a "Gone" status (410) indicating that the |
| resource has been permanently removed. When this status is |
| used the <em>url</em> argument should be omitted.</dd> |
| </dl> |
| |
| <p>Other status codes can be returned by giving the numeric |
| status code as the value of <em>status</em>. If the status is |
| between 300 and 399, the <em>url</em> argument must be present, |
| otherwise it must be omitted. Note that the status must be |
| known to the Apache code (see the function |
| <code>send_error_response</code> in http_protocol.c).</p> |
| |
| <p>Example:</p> |
| |
| <pre> |
| Redirect permanent /one http://example.com/two<br /> |
| Redirect 303 /two http://example.com/other |
| </pre> |
| <hr /> |
| |
| <h2><a id="redirectmatch" |
| name="redirectmatch">RedirectMatch</a></h2> |
| |
| <p><a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> RedirectMatch |
| [<em>status</em>] <em>regex URL</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host, directory, .htaccess<br /> |
| <a href="directive-dict.html#Override" |
| rel="Help"><strong>Override:</strong></a> FileInfo<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> Available in |
| Apache 1.3 and later</p> |
| |
| <p>This directive is equivalent to <a |
| href="#redirect">Redirect</a>, but makes use of standard |
| regular expressions, instead of simple prefix matching. The |
| supplied regular expression is matched against the URL-path, |
| and if it matches, the server will substitute any parenthesized |
| matches into the given string and use it as a filename. For |
| example, to redirect all GIF files to like-named JPEG files on |
| another server, one might use:</p> |
| <pre> |
| RedirectMatch (.*)\.gif$ http://www.anotherserver.com$1.jpg |
| </pre> |
| <hr /> |
| |
| <h2><a id="redirecttemp" name="redirecttemp">RedirectTemp |
| directive</a></h2> |
| |
| <p> |
| <a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> RedirectTemp |
| <em>URL-path URL</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host, directory, .htaccess<br /> |
| <a href="directive-dict.html#Override" |
| rel="Help"><strong>Override:</strong></a> FileInfo<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> This directive |
| is only available in Apache 1.2 and later</p> |
| |
| <p>This directive makes the client know that the Redirect is |
| only temporary (status 302). Exactly equivalent to |
| <code>Redirect temp</code>.</p> |
| <hr /> |
| |
| <h2><a id="redirectperm" name="redirectperm">RedirectPermanent |
| directive</a></h2> |
| |
| <p> |
| <a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> RedirectPermanent |
| <em>URL-path URL</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host, directory, .htaccess<br /> |
| <a href="directive-dict.html#Override" |
| rel="Help"><strong>Override:</strong></a> FileInfo<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> This directive |
| is only available in Apache 1.2 and later</p> |
| |
| <p>This directive makes the client know that the Redirect is |
| permanent (status 301). Exactly equivalent to <code>Redirect |
| permanent</code>.</p> |
| <hr /> |
| |
| <h2><a id="scriptalias" name="scriptalias">ScriptAlias |
| directive</a></h2> |
| |
| <p> |
| <a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> ScriptAlias |
| <em>URL-path file-path</em>|<em>directory-path</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias</p> |
| |
| <p>The ScriptAlias directive has the same behavior as the <a |
| href="#alias">Alias</a> directive, except that in addition it |
| marks the target directory as containing CGI scripts that will be |
| processed by <a href="mod_cgi.html">mod_cgi</a>'s cgi-script |
| handler. URLs with a (%-decoded) path beginning with |
| <em>URL-path</em> will be mapped to scripts beginning with the |
| second argument which is a full pathname in the local |
| filesystem.</p> |
| |
| <p>Example:</p> |
| |
| <blockquote> |
| <code>ScriptAlias /cgi-bin/ /web/cgi-bin/</code> |
| </blockquote> |
| |
| <p>A request for http://myserver/cgi-bin/foo would cause the |
| server to run the script /web/cgi-bin/foo.</p> |
| <hr /> |
| |
| <h2><a id="scriptaliasmatch" |
| name="scriptaliasmatch">ScriptAliasMatch</a></h2> |
| |
| <p><a href="directive-dict.html#Syntax" |
| rel="Help"><strong>Syntax:</strong></a> ScriptAliasMatch |
| <em>regex file-path</em>|<em>directory-path</em><br /> |
| <a href="directive-dict.html#Context" |
| rel="Help"><strong>Context:</strong></a> server config, virtual |
| host<br /> |
| <a href="directive-dict.html#Status" |
| rel="Help"><strong>Status:</strong></a> Base<br /> |
| <a href="directive-dict.html#Module" |
| rel="Help"><strong>Module:</strong></a> mod_alias<br /> |
| <a href="directive-dict.html#Compatibility" |
| rel="Help"><strong>Compatibility:</strong></a> Available in |
| Apache 1.3 and later</p> |
| |
| <p>This directive is equivalent to <a |
| href="#scriptalias">ScriptAlias</a>, but makes use of standard |
| regular expressions, instead of simple prefix matching. The |
| supplied regular expression is matched against the URL-path, |
| and if it matches, the server will substitute any parenthesized |
| matches into the given string and use it as a filename. For |
| example, to activate the standard <code>/cgi-bin</code>, one |
| might use:</p> |
| <pre> |
| ScriptAliasMatch ^/cgi-bin(.*) /usr/local/apache/cgi-bin$1 |
| </pre> |
| <!--#include virtual="footer.html" --> |
| </body> |
| </html> |
| |