1 #pragma ident "%Z%%M% %I% %E% SMI" 2 3 /* 4 * Copyright 1997 by 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 28 #include "gssapiP_krb5.h" 29 30 /* 31 * Check to see whether or not a GSSAPI krb5 credential is valid. If 32 * it is not, return an error. 33 */ 34 35 OM_uint32 36 krb5_gss_validate_cred_1(OM_uint32 *minor_status, gss_cred_id_t cred_handle, 37 krb5_context context) 38 { 39 krb5_gss_cred_id_t cred; 40 krb5_error_code code; 41 krb5_principal princ; 42 43 if (!kg_validate_cred_id(cred_handle)) { 44 *minor_status = (OM_uint32) G_VALIDATE_FAILED; 45 return(GSS_S_CALL_BAD_STRUCTURE|GSS_S_DEFECTIVE_CREDENTIAL); 46 } 47 48 cred = (krb5_gss_cred_id_t) cred_handle; 49 50 code = k5_mutex_lock(&cred->lock); 51 if (code) { 52 *minor_status = code; 53 return GSS_S_FAILURE; 54 } 55 56 if (cred->ccache) { 57 if ((code = krb5_cc_get_principal(context, cred->ccache, &princ))) { 58 k5_mutex_unlock(&cred->lock); 59 *minor_status = code; 60 return(GSS_S_DEFECTIVE_CREDENTIAL); 61 } 62 if (!krb5_principal_compare(context, princ, cred->princ)) { 63 k5_mutex_unlock(&cred->lock); 64 *minor_status = KG_CCACHE_NOMATCH; 65 return(GSS_S_DEFECTIVE_CREDENTIAL); 66 } 67 (void)krb5_free_principal(context, princ); 68 } 69 *minor_status = 0; 70 return GSS_S_COMPLETE; 71 } 72 73 OM_uint32 74 krb5_gss_validate_cred(minor_status, cred_handle) 75 OM_uint32 *minor_status; 76 gss_cred_id_t cred_handle; 77 { 78 krb5_context context; 79 krb5_error_code code; 80 OM_uint32 maj; 81 82 code = krb5_gss_init_context(&context); 83 if (code) { 84 *minor_status = code; 85 return GSS_S_FAILURE; 86 } 87 88 maj = krb5_gss_validate_cred_1(minor_status, cred_handle, context); 89 if (maj == 0) { 90 krb5_gss_cred_id_t cred = (krb5_gss_cred_id_t) cred_handle; 91 k5_mutex_assert_locked(&cred->lock); 92 k5_mutex_unlock(&cred->lock); 93 } 94 krb5_free_context(context); 95 return maj; 96 } 97 98 99 100 101