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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)