1 /* 2 * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "krb5_locl.h" 35 36 RCSID("$Id: sock_principal.c,v 1.9 1999/12/02 17:05:12 joda Exp $"); 37 38 krb5_error_code 39 krb5_sock_to_principal (krb5_context context, 40 int sock, 41 const char *sname, 42 int32_t type, 43 krb5_principal *ret_princ) 44 { 45 krb5_error_code ret; 46 krb5_address address; 47 struct sockaddr_storage __ss; 48 struct sockaddr *sa = (struct sockaddr *)&__ss; 49 int len = sizeof(__ss); 50 struct hostent *hostent; 51 int family; 52 char hname[256]; 53 54 if (getsockname (sock, sa, &len) < 0) 55 return errno; 56 family = sa->sa_family; 57 58 ret = krb5_sockaddr2address (sa, &address); 59 if (ret) 60 return ret; 61 62 hostent = roken_gethostbyaddr (address.address.data, 63 address.address.length, 64 family); 65 66 if (hostent == NULL) 67 return h_errno; 68 strlcpy(hname, hostent->h_name, sizeof(hname)); 69 return krb5_sname_to_principal (context, 70 hname, 71 sname, 72 type, 73 ret_princ); 74 } 75