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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<H1>mod_alias</H1>
</CENTER>
<H3>MODULE</H3>
<DIV CLASS=REFBODY>
mod_alias
</DIV>
<H3>MODULE SUMMARY</H3>
<DIV CLASS=REFBODY>
URL ailasing.
</DIV>
<H3>DESCRIPTION</H3>
<DIV CLASS=REFBODY>
<P>Erlang Webserver Server internal API for handling of things
such as interaction data exported by the mod_alias module.
</DIV>
<H3>EXPORTS</H3>
<P><A NAME="default_index/2"><STRONG><CODE>default_index(ConfigDB, Path) -> NewPath</CODE></STRONG></A><BR>
<DIV CLASS=REFBODY><P>Types:
<DIV CLASS=REFTYPES>
<P>
<STRONG><CODE>ConfigDB = config_db()</CODE></STRONG><BR>
<STRONG><CODE>Path = NewPath = string()</CODE></STRONG><BR>
</DIV>
</DIV>
<DIV CLASS=REFBODY>
<A NAME="default_index"><!-- Empty --></A>
<P>If <CODE>Path</CODE> is a directory, <CODE>default_index/2</CODE>, it starts
searching for resources or files that are specified in the config
directive DirectoryIndex.
If an appropriate resource or file is found, it is appended to
the end of <CODE>Path</CODE> and then returned. <CODE>Path</CODE> is
returned unaltered, if no appropriate
file is found, or if <CODE>Path</CODE> is not a directory.
<CODE>config_db()</CODE> is the server config file in ETS table format
as described in
<A HREF="http_server.html">Inets Users Guide.</A>.
</DIV>
<P><A NAME="path/3"><STRONG><CODE>path(PathData, ConfigDB, RequestURI) -> Path</CODE></STRONG></A><BR>
<DIV CLASS=REFBODY><P>Types:
<DIV CLASS=REFTYPES>
<P>
<STRONG><CODE>PathData = interaction_data()</CODE></STRONG><BR>
<STRONG><CODE>ConfigDB = config_db()</CODE></STRONG><BR>
<STRONG><CODE>RequestURI = Path = string()</CODE></STRONG><BR>
</DIV>
</DIV>
<DIV CLASS=REFBODY>
<A NAME="path"><!-- Empty --></A>
<P><CODE>path/3</CODE> returns the actual file <CODE>Path</CODE> in the
<CODE>RequestURI</CODE> (See RFC 1945). If the interaction data
<CODE>{real_name,{Path,AfterPath}}</CODE> has been exported by
mod_alias;
<CODE>Path</CODE> is returned. If no interaction data has been
exported, ServerRoot is used to
generate a file <CODE>Path</CODE>. <CODE>config_db()</CODE> and
<CODE>interaction_data()</CODE> are as defined in <A HREF="http_server.html"> Inets Users Guide</A>.
</DIV>
<P><A NAME="real_name/3"><STRONG><CODE>real_name(ConfigDB, RequestURI, Aliases) -> Ret</CODE></STRONG></A><BR>
<DIV CLASS=REFBODY><P>Types:
<DIV CLASS=REFTYPES>
<P>
<STRONG><CODE>ConfigDB = config_db()</CODE></STRONG><BR>
<STRONG><CODE>RequestURI = string()</CODE></STRONG><BR>
<STRONG><CODE>Aliases = [{FakeName,RealName}]</CODE></STRONG><BR>
<STRONG><CODE>Ret = {ShortPath,Path,AfterPath}</CODE></STRONG><BR>
<STRONG><CODE>ShortPath = Path = AfterPath = string()</CODE></STRONG><BR>
</DIV>
</DIV>
<DIV CLASS=REFBODY>
<A NAME="real_name"><!-- Empty --></A>
<P><CODE>real_name/3</CODE> traverses <CODE>Aliases</CODE>, typically
extracted from <CODE>ConfigDB</CODE>, and matches each
<CODE>FakeName</CODE> with <CODE>RequestURI</CODE>. If a match is found
<CODE>FakeName</CODE> is replaced with <CODE>RealName</CODE> in the
match. The resulting path is split into two parts, that
is <CODE>ShortPath</CODE> and <CODE>AfterPath</CODE> as defined in <A HREF="httpd_util.html#split_path">httpd_util:split_path/1</A>.
<CODE>Path</CODE> is generated from <CODE>ShortPath</CODE>, that is
the result from <A HREF="#default_index">default_index/2</A> with
<CODE>ShortPath</CODE> as an argument.
<CODE>config_db()</CODE> is the server config file in ETS table
format as described in <A HREF="http_server.html">Inets User Guide.</A>.
</DIV>
<P><A NAME="real_script_name/3"><STRONG><CODE>real_script_name(ConfigDB,RequestURI,ScriptAliases) -> Ret</CODE></STRONG></A><BR>
<DIV CLASS=REFBODY><P>Types:
<DIV CLASS=REFTYPES>
<P>
<STRONG><CODE>ConfigDB = config_db()</CODE></STRONG><BR>
<STRONG><CODE>RequestURI = string()</CODE></STRONG><BR>
<STRONG><CODE>ScriptAliases = [{FakeName,RealName}]</CODE></STRONG><BR>
<STRONG><CODE>Ret = {ShortPath,AfterPath} | not_a_script</CODE></STRONG><BR>
<STRONG><CODE>ShortPath = AfterPath = string()</CODE></STRONG><BR>
</DIV>
</DIV>
<DIV CLASS=REFBODY>
<A NAME="real_script_name"><!-- Empty --></A>
<P><CODE>real_name/3</CODE> traverses <CODE>ScriptAliases</CODE>,
typically extracted from <CODE>ConfigDB</CODE>, and matches each
<CODE>FakeName</CODE> with <CODE>RequestURI</CODE>. If a match is found
<CODE>FakeName</CODE> is replaced with <CODE>RealName</CODE> in the
match. If the resulting match is not an executable script
<CODE>not_a_script</CODE> is returned. If it is a script the
resulting script path is in two parts, that is
<CODE>ShortPath</CODE> and <CODE>AfterPath</CODE> as defined in <A HREF="httpd_util.html#split_script_path">httpd_util:split_script_path/1</A>.
<CODE>config_db()</CODE> is the server config file in ETS table
format as described in <A HREF="http_server.html">Inets
Users Guide.</A>.
</DIV>
<H3>AUTHORS</H3>
<DIV CLASS=REFBODY>
Joakim Greben
- support@erlang.ericsson.se<BR>
</DIV>
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<SMALL>inets 4.7.6<BR>
Copyright © 1991-2006
<A HREF="http://www.erlang.se">Ericsson AB</A><BR>
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