1 /* 2 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * lib/krb5/krb/copy_auth.c 8 * 9 * Copyright 1990 by the Massachusetts Institute of Technology. 10 * All Rights Reserved. 11 * 12 * Export of this software from the United States of America may 13 * require a specific license from the United States Government. 14 * It is the responsibility of any person or organization contemplating 15 * export to obtain such a license before exporting. 16 * 17 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 18 * distribute this software and its documentation for any purpose and 19 * without fee is hereby granted, provided that the above copyright 20 * notice appear in all copies and that both that copyright notice and 21 * this permission notice appear in supporting documentation, and that 22 * the name of M.I.T. not be used in advertising or publicity pertaining 23 * to distribution of the software without specific, written prior 24 * permission. Furthermore if you modify this software you must label 25 * your software as modified software and not distribute it in such a 26 * fashion that it might be confused with the original M.I.T. software. 27 * M.I.T. makes no representations about the suitability of 28 * this software for any purpose. It is provided "as is" without express 29 * or implied warranty. 30 * 31 * 32 * krb5_copy_authdata() 33 */ 34 35 #include "k5-int.h" 36 37 /*ARGSUSED*/ 38 static krb5_error_code 39 krb5_copy_authdatum(krb5_context context, const krb5_authdata *inad, krb5_authdata **outad) 40 { 41 krb5_authdata *tmpad; 42 43 if (!(tmpad = (krb5_authdata *)MALLOC(sizeof(*tmpad)))) 44 return ENOMEM; 45 *tmpad = *inad; 46 if (!(tmpad->contents = (krb5_octet *)MALLOC(inad->length))) { 47 krb5_xfree_wrap(tmpad, inad->length); 48 return ENOMEM; 49 } 50 (void) memcpy((char *)tmpad->contents, (char *)inad->contents, inad->length); 51 *outad = tmpad; 52 return 0; 53 } 54 55 /* 56 * Copy an authdata array, with fresh allocation. 57 */ 58 krb5_error_code KRB5_CALLCONV 59 krb5_copy_authdata(krb5_context context, krb5_authdata *const *inauthdat, krb5_authdata ***outauthdat) 60 { 61 krb5_error_code retval; 62 krb5_authdata ** tempauthdat; 63 register unsigned int nelems = 0; 64 65 if (!inauthdat) { 66 *outauthdat = 0; 67 return 0; 68 } 69 70 while (inauthdat[nelems]) nelems++; 71 72 /* one more for a null terminated list */ 73 if (!(tempauthdat = (krb5_authdata **) CALLOC(nelems+1, 74 sizeof(*tempauthdat)))) 75 return ENOMEM; 76 77 for (nelems = 0; inauthdat[nelems]; nelems++) { 78 retval = krb5_copy_authdatum(context, inauthdat[nelems], 79 &tempauthdat[nelems]); 80 if (retval) { 81 krb5_free_authdata(context, tempauthdat); 82 return retval; 83 } 84 } 85 86 *outauthdat = tempauthdat; 87 return 0; 88 } 89