diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/k_getsockinst.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/k_getsockinst.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/k_getsockinst.c b/crypto/kerberosIV/lib/krb/k_getsockinst.c new file mode 100644 index 0000000..04676b1 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/k_getsockinst.c @@ -0,0 +1,73 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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 acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS 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 INSTITUTE OR 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. + */ + +#include "krb_locl.h" + +RCSID("$Id: k_getsockinst.c,v 1.10 1997/05/02 14:29:17 assar Exp $"); + +/* + * Return in inst the name of the local interface bound to socket + * fd. On Failure return the 'wildcard' instance "*". + */ + +int +k_getsockinst(int fd, char *inst, size_t inst_size) +{ + struct sockaddr_in addr; + int len = sizeof(addr); + struct hostent *hnam; + + if (getsockname(fd, (struct sockaddr *)&addr, &len) < 0) + goto fail; + + hnam = gethostbyaddr((char *)&addr.sin_addr, + sizeof(addr.sin_addr), + addr.sin_family); + if (hnam == 0) + goto fail; + + strncpy (inst, hnam->h_name, inst_size); + inst[inst_size - 1] = '\0'; + k_ricercar(inst); /* Canonicalize name */ + return 0; /* Success */ + + fail: + inst[0] = '*'; + inst[1] = 0; + return -1; +} |