1 /* 2 * Copyright (C) 1998 by the FundsXpress, INC. 3 * 4 * All rights reserved. 5 * 6 * Export of this software from the United States of America may require 7 * a specific license from the United States Government. It is the 8 * responsibility of any person or organization contemplating export to 9 * obtain such a license before exporting. 10 * 11 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 12 * distribute this software and its documentation for any purpose and 13 * without fee is hereby granted, provided that the above copyright 14 * notice appear in all copies and that both that copyright notice and 15 * this permission notice appear in supporting documentation, and that 16 * the name of FundsXpress. not be used in advertising or publicity pertaining 17 * to distribution of the software without specific, written prior 18 * permission. FundsXpress makes no representations about the suitability of 19 * this software for any purpose. It is provided "as is" without express 20 * or implied warranty. 21 * 22 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 24 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 25 */ 26 27 #include "k5-int.h" 28 #include "etypes.h" 29 #include "cksumtypes.h" 30 31 static int etype_match(krb5_enctype e1, krb5_enctype e2) 32 { 33 int i1, i2; 34 35 for (i1=0; i1<krb5_enctypes_length; i1++) 36 if (krb5_enctypes_list[i1].etype == e1) 37 break; 38 39 for (i2=0; i2<krb5_enctypes_length; i2++) 40 if (krb5_enctypes_list[i2].etype == e2) 41 break; 42 43 return((i1 < krb5_enctypes_length) && 44 (i2 < krb5_enctypes_length) && 45 (krb5_enctypes_list[i1].enc == krb5_enctypes_list[i2].enc)); 46 } 47 48 /*ARGSUSED*/ 49 krb5_error_code KRB5_CALLCONV 50 krb5_c_keyed_checksum_types(krb5_context context, krb5_enctype enctype, 51 unsigned int *count, krb5_cksumtype **cksumtypes) 52 { 53 unsigned int i, c; 54 55 c = 0; 56 for (i=0; i<krb5_cksumtypes_length; i++) { 57 if ((krb5_cksumtypes_list[i].keyhash && 58 etype_match(krb5_cksumtypes_list[i].keyed_etype, enctype)) || 59 (krb5_cksumtypes_list[i].flags & KRB5_CKSUMFLAG_DERIVE)) { 60 c++; 61 } 62 } 63 64 *count = c; 65 66 if ((*cksumtypes = (krb5_cksumtype *) malloc(c*sizeof(krb5_cksumtype))) 67 == NULL) 68 return(ENOMEM); 69 70 c = 0; 71 for (i=0; i<krb5_cksumtypes_length; i++) { 72 if ((krb5_cksumtypes_list[i].keyhash && 73 etype_match(krb5_cksumtypes_list[i].keyed_etype, enctype)) || 74 (krb5_cksumtypes_list[i].flags & KRB5_CKSUMFLAG_DERIVE)) { 75 (*cksumtypes)[c] = krb5_cksumtypes_list[i].ctype; 76 c++; 77 } 78 } 79 80 return(0); 81 } 82 83 /*ARGSUSED*/ 84 void KRB5_CALLCONV 85 krb5_free_cksumtypes(krb5_context context, krb5_cksumtype *val) 86 { 87 if (val) 88 krb5_xfree(val); 89 return; 90 } 91 92