docs/manual/mod/mod_cgi.html.en - httpd - Git at Google

 <?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
               This file is generated from xml source: DO NOT EDIT
         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
       -->
 <title>mod_cgi - 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 2.3</p>
 <img alt="" src="../images/feather.gif" /></div>
 <div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="../images/left.gif" /></a></div>
 <div id="path">
 <a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.3</a> &gt; <a href="./">Modules</a></div>
 <div id="page-content">
 <div id="preamble"><h1>Apache Module mod_cgi</h1>
 <div class="toplang">
 <p><span>Available Languages: </span><a href="../en/mod/mod_cgi.html" title="English">&nbsp;en&nbsp;</a> |
 <a href="../ja/mod/mod_cgi.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
 <a href="../ko/mod/mod_cgi.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
 </div>
 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Execution of CGI scripts</td></tr>
 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>cgi_module</td></tr>
 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_cgi.c</td></tr></table>
 <h3>Summary</h3>

     <p>Any file that has the handler
     <code>cgi-script</code> will be treated
     as a CGI script, and run by the server, with its output being
     returned to the client. Files acquire this handler either by
     having a name containing an extension defined by the
     <code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code> directive, or by being
     in a <code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code>
     directory.</p>

     <p>For an introduction to using CGI scripts with Apache, see
     our tutorial on <a href="../howto/cgi.html">Dynamic Content
     With CGI</a>.</p>

     <p>When using a multi-threaded MPM under unix, the module
     <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code> should be used in place of
     this module. At the user level, the two modules are essentially
     identical.</p>

     <p>For backward-compatibility, the cgi-script handler will also be activated
     for any file with the mime-type <code>application/x-httpd-cgi</code>. The
     use of the magic mime-type is deprecated.</p>
 </div>
 <div id="quickview"><h3 class="directives">Directives</h3>
 <ul id="toc">
 <li><img alt="" src="../images/down.gif" /> <a href="#scriptlog">ScriptLog</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#scriptlogbuffer">ScriptLogBuffer</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#scriptloglength">ScriptLogLength</a></li>
 </ul>
 <h3>Topics</h3>
 <ul id="topics">
 <li><img alt="" src="../images/down.gif" /> <a href="#env">CGI Environment variables</a></li>
 <li><img alt="" src="../images/down.gif" /> <a href="#cgi-debug">CGI Debugging</a></li>
 </ul><h3>See also</h3>
 <ul class="seealso">
 <li><code class="directive"><a href="../mod/core.html#acceptpathinfo">AcceptPathInfo</a></code></li>
 <li><code class="directive"><a href="../mod/core.html#options">Options</a></code> ExecCGI</li>
 <li><code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code></li>
 <li><code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code></li>
 <li><a href="../suexec.html">Running CGI programs under different
     user IDs</a></li>
 <li><a href="http://www.ietf.org/rfc/rfc3875">CGI Specification</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="env" id="env">CGI Environment variables</a></h2>
     <p>The server will set the CGI environment variables as described
     in the <a href="http://www.ietf.org/rfc/rfc3875">CGI specification</a>,
     with the following provisions:</p>

     <dl>
       <dt>PATH_INFO</dt>

       <dd>This will not be available if the <code class="directive"><a href="../mod/core.html#acceptpathinfo">AcceptPathInfo</a></code> directive is explicitly set to
       <code>off</code>.  The default behavior, if <code class="directive">AcceptPathInfo</code> is not given, is that <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> will accept path info (trailing <code>
       /more/path/info</code> following the script filename in the URI),
       while the core server will return a 404 NOT FOUND error for requests
       with additional path info. Omitting the <code class="directive">AcceptPathInfo</code> directive has the same effect as setting
       it <code>On</code> for <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> requests.</dd>

       <dt>REMOTE_HOST</dt>

       <dd>This will only be set if <code class="directive"><a href="../mod/core.html#hostnamelookups">HostnameLookups</a></code> is set to <code>on</code> (it
       is off by default), and if a reverse DNS lookup of the accessing
       host's address indeed finds a host name.</dd>

       <dt>REMOTE_IDENT</dt>

       <dd>This will only be set if <code class="directive"><a href="../mod/core.html#identitycheck">IdentityCheck</a></code> is set to
       <code>on</code> and the accessing host supports the ident
       protocol. Note that the contents of this variable cannot be
       relied upon because it can easily be faked, and if there is a
       proxy between the client and the server, it is usually
       totally useless.</dd>

       <dt>REMOTE_USER</dt>

       <dd>This will only be set if the CGI script is subject to
       authentication.</dd>
     </dl>
 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 <div class="section">
 <h2><a name="cgi-debug" id="cgi-debug">CGI Debugging</a></h2>
     <p>Debugging CGI scripts has traditionally been difficult, mainly
     because it has not been possible to study the output (standard
     output and error) for scripts which are failing to run
     properly. These directives provide more detailed logging of errors
     when they occur.</p>

     <h3>CGI Logfile Format</h3>
       <p>When configured, the CGI error log logs any CGI which does not
       execute properly. Each CGI script which fails to operate causes
       several lines of information to be logged. The first two lines
       are always of the format:</p>

       <div class="example"><p><code>
         %% [<var>time</var>] <var>request-line</var><br />
         %% <var>HTTP-status</var> <var>CGI-script-filename</var>
       </code></p></div>

       <p>If the error is that CGI script cannot be run, the log file
       will contain an extra two lines:</p>

       <div class="example"><p><code>
         %%error<br />
         <var>error-message</var>
       </code></p></div>

       <p>Alternatively, if the error is the result of the script
       returning incorrect header information (often due to a bug in
       the script), the following information is logged:</p>

       <div class="example"><p><code>
         %request<br />
         <var>All HTTP request headers received</var><br />
         <var>POST or PUT entity (if any)</var><br />
         %response<br />
         <var>All headers output by the CGI script</var><br />
         %stdout<br />
         <var>CGI standard output</var><br />
         %stderr<br />
         <var>CGI standard error</var><br />
       </code></p></div>

       <p>(The %stdout and %stderr parts may be missing if the script did
       not output anything on standard output or standard error).</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="ScriptLog" id="ScriptLog">ScriptLog</a> <a name="scriptlog" id="scriptlog">Directive</a></h2>
 <table class="directive">
 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Location of the CGI script error logfile</td></tr>
 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLog <var>file-path</var></code></td></tr>
 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
 </table>
     <p>The <code class="directive">ScriptLog</code> directive sets the CGI
     script error logfile. If no <code class="directive">ScriptLog</code> is given,
     no error log is created. If given, any CGI errors are logged into the
     filename given as argument. If this is a relative file or path it is
     taken relative to the <code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>.
     </p>

     <div class="example"><h3>Example</h3><p><code>
       ScriptLog logs/cgi_log
     </code></p></div>

     <p>This log will be opened as the user the child processes run
     as, <em>i.e.</em> the user specified in the main <code class="directive"><a href="../mod/mod_unixd.html#user">User</a></code> directive. This means that
     either the directory the script log is in needs to be writable
     by that user or the file needs to be manually created and set
     to be writable by that user. If you place the script log in
     your main logs directory, do <strong>NOT</strong> change the
     directory permissions to make it writable by the user the child
     processes run as.</p>

     <p>Note that script logging is meant to be a debugging feature
     when writing CGI scripts, and is not meant to be activated
     continuously on running servers. It is not optimized for speed
     or efficiency, and may have security problems if used in a
     manner other than that for which it was designed.</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="ScriptLogBuffer" id="ScriptLogBuffer">ScriptLogBuffer</a> <a name="scriptlogbuffer" id="scriptlogbuffer">Directive</a></h2>
 <table class="directive">
 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximum amount of PUT or POST requests that will be recorded
 in the scriptlog</td></tr>
 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLogBuffer <var>bytes</var></code></td></tr>
 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ScriptLogBuffer 1024</code></td></tr>
 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
 </table>
     <p>The size of any PUT or POST entity body that is logged to
     the file is limited, to prevent the log file growing too big
     too quickly if large bodies are being received. By default, up
     to 1024 bytes are logged, but this can be changed with this
     directive.</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="ScriptLogLength" id="ScriptLogLength">ScriptLogLength</a> <a name="scriptloglength" id="scriptloglength">Directive</a></h2>
 <table class="directive">
 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Size limit of the CGI script logfile</td></tr>
 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLogLength <var>bytes</var></code></td></tr>
 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ScriptLogLength 10385760</code></td></tr>
 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
 </table>
     <p><code class="directive">ScriptLogLength</code> can be used to limit the
     size of the CGI script logfile. Since the logfile logs a lot of
     information per CGI error (all request headers, all script output)
     it can grow to be a big file. To prevent problems due to unbounded
     growth, this directive can be used to set an maximum file-size for
     the CGI logfile. If the file exceeds this size, no more
     information will be written to it.</p>

 </div>
 </div>
 <div class="bottomlang">
 <p><span>Available Languages: </span><a href="../en/mod/mod_cgi.html" title="English">&nbsp;en&nbsp;</a> |
 <a href="../ja/mod/mod_cgi.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
 <a href="../ko/mod/mod_cgi.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
 </div><div id="footer">
 <p class="apache">Copyright 2011 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</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>
	<?xml version="1.0" encoding="ISO-8859-1"?>
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
	XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
	This file is generated from xml source: DO NOT EDIT
	XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
	-->
	<title>mod_cgi - 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 2.3</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/">Documentation</a> > <a href="../">Version 2.3</a> > <a href="./">Modules</a></div>
	<div id="page-content">
	<div id="preamble"><h1>Apache Module mod_cgi</h1>
	<div class="toplang">
	<p><span>Available Languages: </span><a href="../en/mod/mod_cgi.html" title="English"> en </a> \|
	<a href="../ja/mod/mod_cgi.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> \|
	<a href="../ko/mod/mod_cgi.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>Execution of CGI scripts</td></tr>
	<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
	<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>cgi_module</td></tr>
	<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_cgi.c</td></tr></table>
	<h3>Summary</h3>

	<p>Any file that has the handler
	<code>cgi-script</code> will be treated
	as a CGI script, and run by the server, with its output being
	returned to the client. Files acquire this handler either by
	having a name containing an extension defined by the
	<code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code> directive, or by being
	in a <code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code>
	directory.</p>

	<p>For an introduction to using CGI scripts with Apache, see
	our tutorial on <a href="../howto/cgi.html">Dynamic Content
	With CGI</a>.</p>

	<p>When using a multi-threaded MPM under unix, the module
	<code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code> should be used in place of
	this module. At the user level, the two modules are essentially
	identical.</p>

	<p>For backward-compatibility, the cgi-script handler will also be activated
	for any file with the mime-type <code>application/x-httpd-cgi</code>. The
	use of the magic mime-type is deprecated.</p>
	</div>
	<div id="quickview"><h3 class="directives">Directives</h3>
	<ul id="toc">
	<li><img alt="" src="../images/down.gif" /> <a href="#scriptlog">ScriptLog</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#scriptlogbuffer">ScriptLogBuffer</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#scriptloglength">ScriptLogLength</a></li>
	</ul>
	<h3>Topics</h3>
	<ul id="topics">
	<li><img alt="" src="../images/down.gif" /> <a href="#env">CGI Environment variables</a></li>
	<li><img alt="" src="../images/down.gif" /> <a href="#cgi-debug">CGI Debugging</a></li>
	</ul><h3>See also</h3>
	<ul class="seealso">
	<li><code class="directive"><a href="../mod/core.html#acceptpathinfo">AcceptPathInfo</a></code></li>
	<li><code class="directive"><a href="../mod/core.html#options">Options</a></code> ExecCGI</li>
	<li><code class="directive"><a href="../mod/mod_alias.html#scriptalias">ScriptAlias</a></code></li>
	<li><code class="directive"><a href="../mod/mod_mime.html#addhandler">AddHandler</a></code></li>
	<li><a href="../suexec.html">Running CGI programs under different
	user IDs</a></li>
	<li><a href="http://www.ietf.org/rfc/rfc3875">CGI Specification</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="env" id="env">CGI Environment variables</a></h2>
	<p>The server will set the CGI environment variables as described
	in the <a href="http://www.ietf.org/rfc/rfc3875">CGI specification</a>,
	with the following provisions:</p>

	<dl>
	<dt>PATH_INFO</dt>

	<dd>This will not be available if the <code class="directive"><a href="../mod/core.html#acceptpathinfo">AcceptPathInfo</a></code> directive is explicitly set to
	<code>off</code>. The default behavior, if <code class="directive">AcceptPathInfo</code> is not given, is that <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> will accept path info (trailing <code>
	/more/path/info</code> following the script filename in the URI),
	while the core server will return a 404 NOT FOUND error for requests
	with additional path info. Omitting the <code class="directive">AcceptPathInfo</code> directive has the same effect as setting
	it <code>On</code> for <code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code> requests.</dd>

	<dt>REMOTE_HOST</dt>

	<dd>This will only be set if <code class="directive"><a href="../mod/core.html#hostnamelookups">HostnameLookups</a></code> is set to <code>on</code> (it
	is off by default), and if a reverse DNS lookup of the accessing
	host's address indeed finds a host name.</dd>

	<dt>REMOTE_IDENT</dt>

	<dd>This will only be set if <code class="directive"><a href="../mod/core.html#identitycheck">IdentityCheck</a></code> is set to
	<code>on</code> and the accessing host supports the ident
	protocol. Note that the contents of this variable cannot be
	relied upon because it can easily be faked, and if there is a
	proxy between the client and the server, it is usually
	totally useless.</dd>

	<dt>REMOTE_USER</dt>

	<dd>This will only be set if the CGI script is subject to
	authentication.</dd>
	</dl>
	</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
	<div class="section">
	<h2><a name="cgi-debug" id="cgi-debug">CGI Debugging</a></h2>
	<p>Debugging CGI scripts has traditionally been difficult, mainly
	because it has not been possible to study the output (standard
	output and error) for scripts which are failing to run
	properly. These directives provide more detailed logging of errors
	when they occur.</p>

	<h3>CGI Logfile Format</h3>
	<p>When configured, the CGI error log logs any CGI which does not
	execute properly. Each CGI script which fails to operate causes
	several lines of information to be logged. The first two lines
	are always of the format:</p>

	<div class="example"><p><code>
	%% [<var>time</var>] <var>request-line</var><br />
	%% <var>HTTP-status</var> <var>CGI-script-filename</var>
	</code></p></div>

	<p>If the error is that CGI script cannot be run, the log file
	will contain an extra two lines:</p>

	<div class="example"><p><code>
	%%error<br />
	<var>error-message</var>
	</code></p></div>

	<p>Alternatively, if the error is the result of the script
	returning incorrect header information (often due to a bug in
	the script), the following information is logged:</p>

	<div class="example"><p><code>
	%request<br />
	<var>All HTTP request headers received</var><br />
	<var>POST or PUT entity (if any)</var><br />
	%response<br />
	<var>All headers output by the CGI script</var><br />
	%stdout<br />
	<var>CGI standard output</var><br />
	%stderr<br />
	<var>CGI standard error</var><br />
	</code></p></div>

	<p>(The %stdout and %stderr parts may be missing if the script did
	not output anything on standard output or standard error).</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="ScriptLog" id="ScriptLog">ScriptLog</a> <a name="scriptlog" id="scriptlog">Directive</a></h2>
	<table class="directive">
	<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Location of the CGI script error logfile</td></tr>
	<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLog <var>file-path</var></code></td></tr>
	<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
	<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
	<tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
	</table>
	<p>The <code class="directive">ScriptLog</code> directive sets the CGI
	script error logfile. If no <code class="directive">ScriptLog</code> is given,
	no error log is created. If given, any CGI errors are logged into the
	filename given as argument. If this is a relative file or path it is
	taken relative to the <code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code>.
	</p>

	<div class="example"><h3>Example</h3><p><code>
	ScriptLog logs/cgi_log
	</code></p></div>

	<p>This log will be opened as the user the child processes run
	as, <em>i.e.</em> the user specified in the main <code class="directive"><a href="../mod/mod_unixd.html#user">User</a></code> directive. This means that
	either the directory the script log is in needs to be writable
	by that user or the file needs to be manually created and set
	to be writable by that user. If you place the script log in
	your main logs directory, do <strong>NOT</strong> change the
	directory permissions to make it writable by the user the child
	processes run as.</p>

	<p>Note that script logging is meant to be a debugging feature
	when writing CGI scripts, and is not meant to be activated
	continuously on running servers. It is not optimized for speed
	or efficiency, and may have security problems if used in a
	manner other than that for which it was designed.</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="ScriptLogBuffer" id="ScriptLogBuffer">ScriptLogBuffer</a> <a name="scriptlogbuffer" id="scriptlogbuffer">Directive</a></h2>
	<table class="directive">
	<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximum amount of PUT or POST requests that will be recorded
	in the scriptlog</td></tr>
	<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLogBuffer <var>bytes</var></code></td></tr>
	<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ScriptLogBuffer 1024</code></td></tr>
	<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
	<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
	<tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
	</table>
	<p>The size of any PUT or POST entity body that is logged to
	the file is limited, to prevent the log file growing too big
	too quickly if large bodies are being received. By default, up
	to 1024 bytes are logged, but this can be changed with this
	directive.</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="ScriptLogLength" id="ScriptLogLength">ScriptLogLength</a> <a name="scriptloglength" id="scriptloglength">Directive</a></h2>
	<table class="directive">
	<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Size limit of the CGI script logfile</td></tr>
	<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ScriptLogLength <var>bytes</var></code></td></tr>
	<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ScriptLogLength 10385760</code></td></tr>
	<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr>
	<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
	<tr><th><a href="directive-dict.html#Module">Module:</a></th><td><code class="module"><a href="../mod/mod_cgi.html">mod_cgi</a></code>, <code class="module"><a href="../mod/mod_cgid.html">mod_cgid</a></code></td></tr>
	</table>
	<p><code class="directive">ScriptLogLength</code> can be used to limit the
	size of the CGI script logfile. Since the logfile logs a lot of
	information per CGI error (all request headers, all script output)
	it can grow to be a big file. To prevent problems due to unbounded
	growth, this directive can be used to set an maximum file-size for
	the CGI logfile. If the file exceeds this size, no more
	information will be written to it.</p>

	</div>
	</div>
	<div class="bottomlang">
	<p><span>Available Languages: </span><a href="../en/mod/mod_cgi.html" title="English"> en </a> \|
	<a href="../ja/mod/mod_cgi.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> \|
	<a href="../ko/mod/mod_cgi.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
	</div><div id="footer">
	<p class="apache">Copyright 2011 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</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>