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<?xml version="1.0" ?> <!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"> <head> <title>CMS_uncompress</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@hsxx.drive.ne.jp" /> </head> <body style="background-color: white"> <!-- INDEX BEGIN --> <div name="index"> <p><a name="__index__"></a></p> <ul> <li><a href="#name">NAME</a></li> <li><a href="#synopsis">SYNOPSIS</a></li> <li><a href="#description">DESCRIPTION</a></li> <li><a href="#notes">NOTES</a></li> <li><a href="#return_values">RETURN VALUES</a></li> <li><a href="#bugs">BUGS</a></li> <li><a href="#see_also">SEE ALSO</a></li> <li><a href="#copyright">COPYRIGHT</a></li> </ul> <hr name="index" /> </div> <!-- INDEX END --> <p> </p> <hr /> <h1><a name="name">NAME</a></h1> <p>CMS_uncompress - uncompress a CMS CompressedData structure</p> <p> </p> <hr /> <h1><a name="synopsis">SYNOPSIS</a></h1> <pre> #include <openssl/cms.h></pre> <pre> int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, unsigned int flags);</pre> <p> </p> <hr /> <h1><a name="description">DESCRIPTION</a></h1> <p><code>CMS_uncompress()</code> extracts and uncompresses the content from a CMS CompressedData structure <strong>cms</strong>. <strong>data</strong> is a BIO to write the content to and <strong>flags</strong> is an optional set of flags.</p> <p>The <strong>dcont</strong> parameter is used in the rare case where the compressed content is detached. It will normally be set to NULL.</p> <p> </p> <hr /> <h1><a name="notes">NOTES</a></h1> <p>The only currently supported compression algorithm is zlib: if the structure indicates the use of any other algorithm an error is returned.</p> <p>If zlib support is not compiled into OpenSSL then <code>CMS_uncompress()</code> will always return an error.</p> <p>The following flags can be passed in the <strong>flags</strong> parameter.</p> <p>If the <strong>CMS_TEXT</strong> flag is set MIME headers for type <strong>text/plain</strong> are deleted from the content. If the content is not of type <strong>text/plain</strong> then an error is returned.</p> <p> </p> <hr /> <h1><a name="return_values">RETURN VALUES</a></h1> <p><code>CMS_uncompress()</code> returns either 1 for success or 0 for failure. The error can be obtained from <code>ERR_get_error(3)</code></p> <p> </p> <hr /> <h1><a name="bugs">BUGS</a></h1> <p>The lack of single pass processing and the need to hold all data in memory as mentioned in <code>CMS_verify()</code> also applies to <code>CMS_decompress()</code>.</p> <p> </p> <hr /> <h1><a name="see_also">SEE ALSO</a></h1> <p><em>ERR_get_error(3)</em>, <em>CMS_compress(3)</em></p> <p> </p> <hr /> <h1><a name="copyright">COPYRIGHT</a></h1> <p>Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.</p> <p>Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p> </body> </html>