138 lines
7.2 KiB
HTML
138 lines
7.2 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta name="DC.Type" content="topic" />
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<meta name="DC.Title" content="Get Environment Variable (QtmhGetEnv) API" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2002,2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Get Environment Variable (QtmhGetEnv) API</title>
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</head>
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<body id="rzaieapi_qtmhgetenv"><a name="rzaieapi_qtmhgetenv"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<!--Java sync-link--><h1 class="topictitle1">Get Environment Variable (QtmhGetEnv) API</h1>
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<div><div class="important"><span class="importanttitle">Important:</span> Information
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for this topic supports the latest PTF levels for HTTP Server for i5/OS .
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It is recommended that you install the latest PTFs to upgrade to the latest
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level of the HTTP Server for i5/OS. Some of the topics documented here are
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not available prior to this update. See <a href="http://www-03.ibm.com/servers/eserver/iseries/software/http/services/service.html" target="_blank">http://www.ibm.com/servers/eserver/iseries/software/http/services/service.htm</a> <img src="www.gif" alt="Link outside Information Center" /> for more information. </div>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" class="figborder" frame="void" border="0" rules="none"><tbody><tr><td colspan="4" valign="top">Required Parameter Group:</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">1</td>
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<td valign="top" width="31.313131313131315%">Receiver variable</td>
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<td valign="top" width="31.060606060606062%">Output</td>
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<td valign="top" width="31.313131313131315%">Char(*)</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">2</td>
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<td valign="top" width="31.313131313131315%">Length of receiver variable</td>
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<td valign="top" width="31.060606060606062%">Input</td>
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<td valign="top" width="31.313131313131315%">Binary(4)</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">3</td>
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<td valign="top" width="31.313131313131315%">Length of response </td>
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<td valign="top" width="31.060606060606062%">Output</td>
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<td valign="top" width="31.313131313131315%">Binary(4)</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">4</td>
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<td valign="top" width="31.313131313131315%">Request variable</td>
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<td valign="top" width="31.060606060606062%">Input</td>
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<td valign="top" width="31.313131313131315%">Char(*)</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">5</td>
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<td valign="top" width="31.313131313131315%">Length of request variable </td>
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<td valign="top" width="31.060606060606062%">Input</td>
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<td valign="top" width="31.313131313131315%">Binary(4)</td>
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</tr>
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<tr><td align="right" valign="top" width="6.313131313131313%">6</td>
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<td valign="top" width="31.313131313131315%">Error Code </td>
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<td valign="top" width="31.060606060606062%">I/O</td>
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<td valign="top" width="31.313131313131315%">Char(*)</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>The <em>QtmhGetEnv</em> API allows you to get the value set by the server
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for a particular HTTP environment variable.</p>
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</div>
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<div class="nested1" id="required"><a name="required"><!-- --></a><h2 class="topictitle2">Required parameter group</h2>
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<div><dl><dt class="dlterm"><strong>Receiver variable</strong></dt>
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<dd>OUTPUT:CHAR(*)<p>The output variable that contains the value set by the
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server for the requested environment variable. In CGI input mode %%MIXED%%,
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this value will be in CCSID 37; otherwise, it will be in the CCSID of the
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current job. Note that the QUERY_STRING in %%BINARY%% mode is not converted
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by the server.</p>
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</dd>
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</dl>
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<dl><dt class="dlterm"><strong>Length of receiver variable</strong></dt>
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<dd>INPUT:BINARY(4)<p>The input variable containing the length of the space
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provided to receive the environment variable value.</p>
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</dd>
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</dl>
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<dl><dt class="dlterm"><strong>Length of response</strong></dt>
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<dd>OUTPUT:BINARY(4)<p>The output variable that contains the length of the
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environment variable value. When the API is unable to determine the value
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for the requested environment variable, the length of the environment variable
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value is set to zero. When the size required for the environment variable
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value is larger than the length of the receiver variable, the size required
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to receive the value is returned.</p>
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</dd>
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</dl>
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<dl><dt class="dlterm"><strong>Request variable</strong></dt>
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<dd>INPUT:CHAR(*)<p>The input variable containing the desired environment
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variable name.</p>
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</dd>
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</dl>
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<dl><dt class="dlterm"><strong>Length of request variable</strong></dt>
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<dd>INPUT:BINARY(4)<p>The input variable containing the length (without trailing
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blanks) of the desired environment variable name.</p>
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</dd>
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</dl>
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<dl><dt class="dlterm"><strong>Error Code</strong></dt>
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<dd>I/O:CHAR(*)<p>The structure in which to return error information. For
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the format of the structure and for details on how to process API errors,
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see the API error reporting topic in the iSeries™ Information Center.</p>
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</dd>
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</dl>
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</div>
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</div>
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<div class="nested1" id="error"><a name="error"><!-- --></a><h2 class="topictitle2">Error messages</h2>
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<div><dl><dt class="dlterm"><strong>CPF24B4 E</strong></dt>
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<dd>Severe Error while addressing parameter list.</dd>
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</dl>
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<dl><dt class="dlterm"><strong>CPF3C17 E</strong></dt>
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<dd>Error occurred with input data parameter.</dd>
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</dl>
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<dl><dt class="dlterm"><strong>CPF3C19 E</strong></dt>
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<dd>Error occurred with receiver variable specified.</dd>
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</dl>
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<dl><dt class="dlterm"><strong>CPF3CF1 E</strong></dt>
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<dd>Error code parameter not valid.</dd>
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</dl>
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<div class="note"><span class="notetitle">Note:</span> The Environment Variable APIs provide the getenv() (Get Value of Environment
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Variable) function necessary to retrieve environment variables in ILE C. Therefore,
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programs written in ILE C do not need to use the QtmhGetEnv() API. This API,
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for ILE C, is more difficult to use (and is slower) than the getenv() API
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on which it is based.</div>
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<p>Programs that need CCSID conversion support for environment variables should
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use the <a href="rzaieapi_qzsrgetenvccsid.htm">Get environment
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variable with CCSID (QzsrGetEnvCCSID) API</a>. </p>
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</div>
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</div>
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</body>
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</html>
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