1 /* 2 * Copyright (c) 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: error_string.c,v 1.1 2001/05/06 23:07:22 assar Exp $"); 37 38 #undef __attribute__ 39 #define __attribute__(X) 40 41 void 42 krb5_free_error_string(krb5_context context, char *str) 43 { 44 if (str != context->error_buf) 45 free(str); 46 } 47 48 void 49 krb5_clear_error_string(krb5_context context) 50 { 51 if (context->error_string != NULL 52 && context->error_string != context->error_buf) 53 free(context->error_string); 54 context->error_string = NULL; 55 } 56 57 krb5_error_code 58 krb5_set_error_string(krb5_context context, const char *fmt, ...) 59 __attribute__((format (printf, 2, 3))) 60 { 61 krb5_error_code ret; 62 va_list ap; 63 64 va_start(ap, fmt); 65 ret = krb5_vset_error_string (context, fmt, ap); 66 va_end(ap); 67 return ret; 68 } 69 70 krb5_error_code 71 krb5_vset_error_string(krb5_context context, const char *fmt, va_list args) 72 __attribute__ ((format (printf, 2, 0))) 73 { 74 krb5_clear_error_string(context); 75 vasprintf(&context->error_string, fmt, args); 76 if(context->error_string == NULL) { 77 vsnprintf (context->error_buf, sizeof(context->error_buf), fmt, args); 78 context->error_string = context->error_buf; 79 } 80 return 0; 81 } 82 83 char* 84 krb5_get_error_string(krb5_context context) 85 { 86 char *ret = context->error_string; 87 context->error_string = NULL; 88 return ret; 89 } 90 91 krb5_boolean 92 krb5_have_error_string(krb5_context context) 93 { 94 return context->error_string != NULL; 95 } 96