1 /* 2 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan 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 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 37 krb5_sock_to_principal (krb5_context context, 38 int sock, 39 const char *sname, 40 int32_t type, 41 krb5_principal *ret_princ) 42 { 43 krb5_error_code ret; 44 struct sockaddr_storage __ss; 45 struct sockaddr *sa = (struct sockaddr *)&__ss; 46 socklen_t salen = sizeof(__ss); 47 char hostname[NI_MAXHOST]; 48 49 if (getsockname (sock, sa, &salen) < 0) { 50 ret = errno; 51 krb5_set_error_message (context, ret, "getsockname: %s", strerror(ret)); 52 return ret; 53 } 54 ret = getnameinfo (sa, salen, hostname, sizeof(hostname), NULL, 0, 0); 55 if (ret) { 56 int save_errno = errno; 57 krb5_error_code ret2 = krb5_eai_to_heim_errno(ret, save_errno); 58 krb5_set_error_message (context, ret2, "getnameinfo: %s", gai_strerror(ret)); 59 return ret2; 60 } 61 62 ret = krb5_sname_to_principal (context, 63 hostname, 64 sname, 65 type, 66 ret_princ); 67 return ret; 68 } 69