1 /* 2 * lib/krb5/krb/pr_to_salt.c 3 * 4 * Copyright 1990 by the Massachusetts Institute of Technology. 5 * All Rights Reserved. 6 * 7 * Export of this software from the United States of America may 8 * require a specific license from the United States Government. 9 * It is the responsibility of any person or organization contemplating 10 * export to obtain such a license before exporting. 11 * 12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 13 * distribute this software and its documentation for any purpose and 14 * without fee is hereby granted, provided that the above copyright 15 * notice appear in all copies and that both that copyright notice and 16 * this permission notice appear in supporting documentation, and that 17 * the name of M.I.T. not be used in advertising or publicity pertaining 18 * to distribution of the software without specific, written prior 19 * permission. Furthermore if you modify this software you must label 20 * your software as modified software and not distribute it in such a 21 * fashion that it might be confused with the original M.I.T. software. 22 * M.I.T. makes no representations about the suitability of 23 * this software for any purpose. It is provided "as is" without express 24 * or implied warranty. 25 * 26 * 27 * krb5_principal2salt() 28 */ 29 30 #include "k5-int.h" 31 32 static krb5_error_code krb5_principal2salt_internal 33 (krb5_context, krb5_const_principal, krb5_data *ret, int); 34 35 /* 36 * Convert a krb5_principal into the default salt for that principal. 37 */ 38 /*ARGSUSED*/ 39 static krb5_error_code 40 krb5_principal2salt_internal(krb5_context context, register krb5_const_principal pr, krb5_data *ret, int use_realm) 41 { 42 unsigned int size = 0, offset=0; 43 krb5_int32 nelem; 44 register int i; 45 46 if (pr == 0) { 47 ret->length = 0; 48 ret->data = 0; 49 return 0; 50 } 51 52 nelem = krb5_princ_size(context, pr); 53 54 if (use_realm) 55 size += krb5_princ_realm(context, pr)->length; 56 57 for (i = 0; i < (int) nelem; i++) 58 size += krb5_princ_component(context, pr, i)->length; 59 60 ret->length = size; 61 if (!(ret->data = malloc (size))) 62 return ENOMEM; 63 64 if (use_realm) { 65 offset = krb5_princ_realm(context, pr)->length; 66 memcpy(ret->data, krb5_princ_realm(context, pr)->data, offset); 67 } 68 69 for (i = 0; i < (int) nelem; i++) { 70 memcpy(&ret->data[offset], krb5_princ_component(context, pr, i)->data, 71 krb5_princ_component(context, pr, i)->length); 72 offset += krb5_princ_component(context, pr, i)->length; 73 } 74 return 0; 75 } 76 77 krb5_error_code 78 krb5_principal2salt(krb5_context context, register krb5_const_principal pr, krb5_data *ret) 79 { 80 return krb5_principal2salt_internal(context, pr, ret, 1); 81 } 82 83 krb5_error_code 84 krb5_principal2salt_norealm(krb5_context context, register krb5_const_principal pr, krb5_data *ret) 85 { 86 return krb5_principal2salt_internal(context, pr, ret, 0); 87 } 88