68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb_locl.h"
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RCSID("$Id: k_getsockinst.c,v 1.1.1.3 2001/09/17 12:09:54 assar Exp $");
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/*
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* Return in inst the name of the local interface bound to socket
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* fd. On Failure return the 'wildcard' instance "*".
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*/
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int
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k_getsockinst(int fd, char *inst, size_t inst_size)
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{
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struct sockaddr_in addr;
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socklen_t len = sizeof(addr);
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struct hostent *hnam;
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if (getsockname(fd, (struct sockaddr *)&addr, &len) < 0)
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goto fail;
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hnam = gethostbyaddr((char *)&addr.sin_addr,
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sizeof(addr.sin_addr),
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addr.sin_family);
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if (hnam == 0)
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goto fail;
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strlcpy (inst, hnam->h_name, inst_size);
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k_ricercar(inst); /* Canonicalize name */
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return 0; /* Success */
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fail:
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inst[0] = '*';
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inst[1] = 0;
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return -1;
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}
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