Re-convert and re-import the CMS manual pages from OpenSSL 1.1.1

(which are still under a free license) with pod2mdoc(1) now that
jsing@ has begun work to provide these APIs.
Some formatting was improved and some typos were fixed, but apart
from that, little was changed, so there is still much to polish.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/lib/libcrypto/man/CMS_uncompress.3 b/src/lib/libcrypto/man/CMS_uncompress.3
new file mode 100644
index 0000000000..50926b7358
--- /dev/null
+++ b/src/lib/libcrypto/man/CMS_uncompress.3
@@ -0,0 +1,111 @@
+.\" $OpenBSD: CMS_uncompress.3,v 1.3 2019/08/10 23:41:22 schwarze Exp $
+.\" full merge up to: OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400
+.\"
+.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
+.\" Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\"
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in
+.\"    the documentation and/or other materials provided with the
+.\"    distribution.
+.\"
+.\" 3. All advertising materials mentioning features or use of this
+.\"    software must display the following acknowledgment:
+.\"    "This product includes software developed by the OpenSSL Project
+.\"    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+.\"
+.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+.\"    endorse or promote products derived from this software without
+.\"    prior written permission. For written permission, please contact
+.\"    openssl-core@openssl.org.
+.\"
+.\" 5. Products derived from this software may not be called "OpenSSL"
+.\"    nor may "OpenSSL" appear in their names without prior written
+.\"    permission of the OpenSSL Project.
+.\"
+.\" 6. Redistributions of any form whatsoever must retain the following
+.\"    acknowledgment:
+.\"    "This product includes software developed by the OpenSSL Project
+.\"    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+.\" OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: August 10 2019 $
+.Dt CMS_UNCOMPRESS 3
+.Os
+.Sh NAME
+.Nm CMS_uncompress
+.Nd uncompress a CMS CompressedData structure
+.Sh SYNOPSIS
+.In openssl/cms.h
+.Ft int
+.Fo CMS_uncompress
+.Fa "CMS_ContentInfo *cms"
+.Fa "BIO *dcont"
+.Fa "BIO *out"
+.Fa "unsigned int flags"
+.Fc
+.Sh DESCRIPTION
+.Fn CMS_uncompress
+extracts and uncompresses the content from a CMS CompressedData
+structure
+.Fa cms .
+.Fa out
+is a
+.Vt BIO
+to write the content to and
+.Fa flags
+is an optional set of flags.
+.Pp
+The
+.Fa dcont
+parameter is used in the rare case where the compressed content is
+detached.
+It will normally be set to
+.Dv NULL .
+.Pp
+The only currently supported compression algorithm is zlib: if the
+structure indicates the use of any other algorithm, an error is returned.
+.Pp
+If zlib support is not compiled in, then
+.Fn CMS_uncompress
+will always return an error.
+.Pp
+If the
+.Dv CMS_TEXT
+flag is set, MIME headers for type text/plain are deleted from the content.
+If the content is not of type text/plain, an error is returned.
+.Sh RETURN VALUES
+.Fn CMS_uncompress
+returns either 1 for success or 0 for failure.
+The error can be obtained from
+.Xr ERR_get_error 3 .
+.Sh SEE ALSO
+.Xr CMS_compress 3
+.Sh HISTORY
+.Fn CMS_uncompress
+was added to OpenSSL 0.9.8.
+.Sh BUGS
+The lack of single pass processing and the need to hold all data in
+memory as mentioned in
+.Xr CMS_verify 3
+also applies to
+.Fn CMS_uncompress .