1 /* 2 * lib/krb5/krb/princ_comp.c 3 * 4 * Copyright 1990,1991 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 * compare two principals, returning a krb5_boolean true if equal, false if 28 * not. 29 */ 30 31 /* 32 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 33 * Use is subject to license terms. 34 */ 35 36 #include <k5-int.h> 37 38 /*ARGSUSED*/ 39 krb5_boolean KRB5_CALLCONV 40 krb5_realm_compare(krb5_context context, krb5_const_principal princ1, krb5_const_principal princ2) 41 { 42 if (krb5_princ_realm(context, princ1)->length != 43 krb5_princ_realm(context, princ2)->length || 44 memcmp (krb5_princ_realm(context, princ1)->data, 45 krb5_princ_realm(context, princ2)->data, 46 krb5_princ_realm(context, princ2)->length)) 47 return FALSE; 48 49 return TRUE; 50 } 51 52 krb5_boolean KRB5_CALLCONV 53 krb5_principal_compare(krb5_context context, krb5_const_principal princ1, krb5_const_principal princ2) 54 { 55 register int i; 56 krb5_int32 nelem; 57 58 nelem = krb5_princ_size(context, princ1); 59 if (nelem != krb5_princ_size(context, princ2)) 60 return FALSE; 61 62 if (! krb5_realm_compare(context, princ1, princ2)) 63 return FALSE; 64 65 for (i = 0; i < (int) nelem; i++) { 66 register const krb5_data *p1 = krb5_princ_component(context, princ1, i); 67 register const krb5_data *p2 = krb5_princ_component(context, princ2, i); 68 if (p1->length != p2->length || 69 memcmp(p1->data, p2->data, p1->length)) 70 return FALSE; 71 } 72 return TRUE; 73 } 74 75 /* 76 * Solaris Kerberos: MS Interop requires that case insensitive comparisons of 77 * service and host components are performed for key table lookup, etc. Only 78 * called if the private environment variable MS_INTEROP is defined. 79 */ 80 krb5_boolean KRB5_CALLCONV 81 __krb5_principal_compare_case_ins(krb5_context context, 82 krb5_const_principal princ1, krb5_const_principal princ2) 83 { 84 register int i; 85 krb5_int32 nelem; 86 87 nelem = krb5_princ_size(context, princ1); 88 if (nelem != krb5_princ_size(context, princ2)) 89 return FALSE; 90 91 if (! krb5_realm_compare(context, princ1, princ2)) 92 return FALSE; 93 94 for (i = 0; i < (int) nelem; i++) { 95 register const krb5_data *p1 = krb5_princ_component(context, princ1, i); 96 register const krb5_data *p2 = krb5_princ_component(context, princ2, i); 97 if (p1->length != p2->length || 98 strncasecmp(p1->data, p2->data, p1->length)) 99 return FALSE; 100 } 101 return TRUE; 102 } 103 104 krb5_boolean KRB5_CALLCONV krb5_is_referral_realm(const krb5_data *r) 105 { 106 /* 107 * Check for a match with KRB5_REFERRAL_REALM. Currently this relies 108 * on that string constant being zero-length. (Unlike principal realm 109 * names, KRB5_REFERRAL_REALM is known to be a string.) 110 */ 111 #ifdef DEBUG_REFERRALS 112 #if 0 113 printf("krb5_is_ref_realm: checking <%s> for referralness: %s\n", 114 r->data,(r->length==0)?"true":"false"); 115 #endif 116 #endif 117 assert(strlen(KRB5_REFERRAL_REALM)==0); 118 if (r->length==0) 119 return TRUE; 120 else 121 return FALSE; 122 } 123