1 #pragma ident "%Z%%M% %I% %E% SMI" 2 /* 3 * Copyright (C) 1998 by the FundsXpress, INC. 4 * 5 * All rights reserved. 6 * 7 * Export of this software from the United States of America may require 8 * a specific license from the United States Government. It is the 9 * responsibility of any person or organization contemplating export to 10 * 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 FundsXpress. not be used in advertising or publicity pertaining 18 * to distribution of the software without specific, written prior 19 * permission. FundsXpress makes no representations about the suitability of 20 * this software for any purpose. It is provided "as is" without express 21 * or implied warranty. 22 * 23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 25 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 26 */ 27 28 #include <k5-int.h> 29 #include <etypes.h> 30 #include <cksumtypes.h> 31 32 static int etype_match(e1, e2) 33 krb5_enctype e1, e2; 34 { 35 int i1, i2; 36 37 for (i1=0; i1<krb5_enctypes_length; i1++) 38 if (krb5_enctypes_list[i1].etype == e1) 39 break; 40 41 for (i2=0; i2<krb5_enctypes_length; i2++) 42 if (krb5_enctypes_list[i2].etype == e2) 43 break; 44 45 return((i1 < krb5_enctypes_length) && 46 (i2 < krb5_enctypes_length) && 47 (krb5_enctypes_list[i1].enc == krb5_enctypes_list[i2].enc)); 48 } 49 50 /*ARGSUSED*/ 51 52 krb5_error_code KRB5_CALLCONV 53 krb5_c_keyed_checksum_types(krb5_context context, krb5_enctype enctype, 54 unsigned int *count, krb5_cksumtype **cksumtypes) 55 { 56 unsigned int i, c; 57 58 c = 0; 59 for (i=0; i<krb5_cksumtypes_length; i++) { 60 if ((krb5_cksumtypes_list[i].keyhash && 61 etype_match(krb5_cksumtypes_list[i].keyed_etype, enctype)) || 62 (krb5_cksumtypes_list[i].flags & KRB5_CKSUMFLAG_DERIVE)) { 63 c++; 64 } 65 } 66 67 *count = c; 68 69 if ((*cksumtypes = (krb5_cksumtype *) malloc(c*sizeof(krb5_cksumtype))) 70 == NULL) 71 return(ENOMEM); 72 73 c = 0; 74 for (i=0; i<krb5_cksumtypes_length; i++) { 75 if ((krb5_cksumtypes_list[i].keyhash && 76 etype_match(krb5_cksumtypes_list[i].keyed_etype, enctype)) || 77 (krb5_cksumtypes_list[i].flags & KRB5_CKSUMFLAG_DERIVE)) { 78 (*cksumtypes)[c] = krb5_cksumtypes_list[i].ctype; 79 c++; 80 } 81 } 82 83 return(0); 84 } 85 86 /*ARGSUSED*/ 87 void KRB5_CALLCONV 88 krb5_free_cksumtypes(krb5_context context, krb5_cksumtype *val) 89 { 90 if (val) 91 krb5_xfree(val); 92 return; 93 } 94 95