1 /* 2 * Copyright (c) 1997 - 2001 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 1.16 2001/07/26 09:05:30 assar 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 struct sockaddr_storage __ss; 47 struct sockaddr *sa = (struct sockaddr *)&__ss; 48 socklen_t salen = sizeof(__ss); 49 char hostname[NI_MAXHOST]; 50 51 if (getsockname (sock, sa, &salen) < 0) { 52 ret = errno; 53 krb5_set_error_string (context, "getsockname: %s", strerror(ret)); 54 return ret; 55 } 56 ret = getnameinfo (sa, salen, hostname, sizeof(hostname), NULL, 0, 0); 57 if (ret) { 58 int save_errno = errno; 59 60 krb5_set_error_string (context, "getnameinfo: %s", gai_strerror(ret)); 61 return krb5_eai_to_heim_errno(ret, save_errno); 62 } 63 64 ret = krb5_sname_to_principal (context, 65 hostname, 66 sname, 67 type, 68 ret_princ); 69 return ret; 70 } 71