1 /* 2 * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "krb5_locl.h" 35 36 RCSID("$Id: data.c,v 1.17 2003/03/25 22:07:17 lha Exp $"); 37 38 void 39 krb5_data_zero(krb5_data *p) 40 { 41 p->length = 0; 42 p->data = NULL; 43 } 44 45 void 46 krb5_data_free(krb5_data *p) 47 { 48 if(p->data != NULL) 49 free(p->data); 50 p->length = 0; 51 } 52 53 void 54 krb5_free_data_contents(krb5_context context, krb5_data *data) 55 { 56 krb5_data_free(data); 57 } 58 59 void 60 krb5_free_data(krb5_context context, 61 krb5_data *p) 62 { 63 krb5_data_free(p); 64 free(p); 65 } 66 67 krb5_error_code 68 krb5_data_alloc(krb5_data *p, int len) 69 { 70 p->data = malloc(len); 71 if(len && p->data == NULL) 72 return ENOMEM; 73 p->length = len; 74 return 0; 75 } 76 77 krb5_error_code 78 krb5_data_realloc(krb5_data *p, int len) 79 { 80 void *tmp; 81 tmp = realloc(p->data, len); 82 if(len && !tmp) 83 return ENOMEM; 84 p->data = tmp; 85 p->length = len; 86 return 0; 87 } 88 89 krb5_error_code 90 krb5_data_copy(krb5_data *p, const void *data, size_t len) 91 { 92 if (len) { 93 if(krb5_data_alloc(p, len)) 94 return ENOMEM; 95 memmove(p->data, data, len); 96 } else 97 p->data = NULL; 98 p->length = len; 99 return 0; 100 } 101 102 krb5_error_code 103 krb5_copy_data(krb5_context context, 104 const krb5_data *indata, 105 krb5_data **outdata) 106 { 107 krb5_error_code ret; 108 ALLOC(*outdata, 1); 109 if(*outdata == NULL) { 110 krb5_set_error_string(context, "malloc: out of memory"); 111 return ENOMEM; 112 } 113 ret = copy_octet_string(indata, *outdata); 114 if(ret) { 115 krb5_clear_error_string (context); 116 free(*outdata); 117 } 118 return ret; 119 } 120