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BIO_PARSE_HOSTSERV(3)		    OpenSSL		 BIO_PARSE_HOSTSERV(3)

NAME
       BIO_hostserv_priorities,	BIO_parse_hostserv - utility routines to parse
       a standard host and service string

SYNOPSIS
	#include <openssl/bio.h>

	enum BIO_hostserv_priorities {
	    BIO_PARSE_PRIO_HOST, BIO_PARSE_PRIO_SERV
	};
	int BIO_parse_hostserv(const char *hostserv, char **host, char **service,
			       enum BIO_hostserv_priorities hostserv_prio);

DESCRIPTION
       BIO_parse_hostserv() will parse the information given in	hostserv,
       create strings with the hostname	and service name and give those	back
       via host	and service.  Those will need to be freed after	they are used.
       hostserv_prio helps determine if	hostserv shall be interpreted
       primarily as a hostname or a service name in ambiguous cases.

       The syntax the BIO_parse_hostserv() recognises is:

	host + ':' + service
	host + ':' + '*'
	host + ':'
	       ':' + service
	'*'  + ':' + service
	host
	service

       The host	part can be a name or an IP address.  If it's a	IPv6 address,
       it MUST be enclosed in brackets,	such as	'[::1]'.

       The service part	can  be	a service name or its port number.

       The returned values will	depend on the given hostserv string and
       hostserv_prio, as follows:

	host + ':' + service  => *host = "host", *service = "service"
	host + ':' + '*'      => *host = "host", *service = NULL
	host + ':'	      => *host = "host", *service = NULL
	       ':' + service  => *host = NULL, *service	= "service"
	 '*' + ':' + service  => *host = NULL, *service	= "service"

	in case	no ':' is present in the string, the result depends on
	hostserv_prio, as follows:

	when hostserv_prio == BIO_PARSE_PRIO_HOST
	host		     =>	*host =	"host",	*service untouched

	when hostserv_prio == BIO_PARSE_PRIO_SERV
	service		     =>	*host untouched, *service = "service"

RETURN VALUES
       BIO_parse_hostserv() returns 1 on success or 0 on error.

SEE ALSO
       BIO_ADDRINFO(3)

COPYRIGHT
       Copyright 2016-2020 The OpenSSL Project Authors.	All Rights Reserved.

       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
       <https://www.openssl.org/source/license.html>.

1.1.1k				  2021-03-25		 BIO_PARSE_HOSTSERV(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | COPYRIGHT

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