1 /* 2 * Copyright (c) 1997 - 2000 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 #include <err.h> 36 37 RCSID("$Id: warn.c,v 1.11 2000/08/16 07:37:41 assar Exp $"); 38 39 static krb5_error_code 40 _warnerr(krb5_context context, int do_errtext, 41 krb5_error_code code, int level, const char *fmt, va_list ap) 42 { 43 char xfmt[7] = ""; 44 const char *args[2], **arg; 45 char *msg = NULL; 46 47 args[0] = args[1] = NULL; 48 arg = args; 49 if(fmt){ 50 strcat(xfmt, "%s"); 51 if(do_errtext) 52 strcat(xfmt, ": "); 53 vasprintf(&msg, fmt, ap); 54 if(msg == NULL) 55 return ENOMEM; 56 *arg++ = msg; 57 } 58 if(context && do_errtext){ 59 const char *err_msg; 60 61 strcat(xfmt, "%s"); 62 63 err_msg = krb5_get_err_text(context, code); 64 if (err_msg) 65 *arg++ = err_msg; 66 else 67 *arg++ = "<unknown error>"; 68 } 69 70 if(context && context->warn_dest) 71 krb5_log(context, context->warn_dest, level, xfmt, args[0], args[1]); 72 else 73 warnx(xfmt, args[0], args[1]); 74 free(msg); 75 return 0; 76 } 77 78 #define FUNC(ETEXT, CODE, LEVEL) \ 79 krb5_error_code ret; \ 80 va_list ap; \ 81 va_start(ap, fmt); \ 82 ret = _warnerr(context, ETEXT, CODE, LEVEL, fmt, ap); \ 83 va_end(ap); 84 85 #undef __attribute__ 86 #define __attribute__(X) 87 88 krb5_error_code 89 krb5_vwarn(krb5_context context, krb5_error_code code, 90 const char *fmt, va_list ap) 91 __attribute__ ((format (printf, 3, 0))) 92 { 93 return _warnerr(context, 1, code, 1, fmt, ap); 94 } 95 96 97 krb5_error_code 98 krb5_warn(krb5_context context, krb5_error_code code, const char *fmt, ...) 99 __attribute__ ((format (printf, 3, 4))) 100 { 101 FUNC(1, code, 1); 102 return ret; 103 } 104 105 krb5_error_code 106 krb5_vwarnx(krb5_context context, const char *fmt, va_list ap) 107 __attribute__ ((format (printf, 2, 0))) 108 { 109 return _warnerr(context, 0, 0, 1, fmt, ap); 110 } 111 112 krb5_error_code 113 krb5_warnx(krb5_context context, const char *fmt, ...) 114 __attribute__ ((format (printf, 2, 3))) 115 { 116 FUNC(0, 0, 1); 117 return ret; 118 } 119 120 krb5_error_code 121 krb5_verr(krb5_context context, int eval, krb5_error_code code, 122 const char *fmt, va_list ap) 123 __attribute__ ((noreturn, format (printf, 4, 0))) 124 { 125 _warnerr(context, 1, code, 0, fmt, ap); 126 exit(eval); 127 } 128 129 130 krb5_error_code 131 krb5_err(krb5_context context, int eval, krb5_error_code code, 132 const char *fmt, ...) 133 __attribute__ ((noreturn, format (printf, 4, 5))) 134 { 135 FUNC(1, code, 0); 136 exit(eval); 137 } 138 139 krb5_error_code 140 krb5_verrx(krb5_context context, int eval, const char *fmt, va_list ap) 141 __attribute__ ((noreturn, format (printf, 3, 0))) 142 { 143 _warnerr(context, 0, 0, 0, fmt, ap); 144 exit(eval); 145 } 146 147 krb5_error_code 148 krb5_errx(krb5_context context, int eval, const char *fmt, ...) 149 __attribute__ ((noreturn, format (printf, 3, 4))) 150 { 151 FUNC(0, 0, 0); 152 exit(eval); 153 } 154 155 krb5_error_code 156 krb5_vabort(krb5_context context, krb5_error_code code, 157 const char *fmt, va_list ap) 158 __attribute__ ((noreturn, format (printf, 3, 0))) 159 { 160 _warnerr(context, 1, code, 0, fmt, ap); 161 abort(); 162 } 163 164 165 krb5_error_code 166 krb5_abort(krb5_context context, krb5_error_code code, const char *fmt, ...) 167 __attribute__ ((noreturn, format (printf, 3, 4))) 168 { 169 FUNC(1, code, 0); 170 abort(); 171 } 172 173 krb5_error_code 174 krb5_vabortx(krb5_context context, const char *fmt, va_list ap) 175 __attribute__ ((noreturn, format (printf, 2, 0))) 176 { 177 _warnerr(context, 0, 0, 0, fmt, ap); 178 abort(); 179 } 180 181 krb5_error_code 182 krb5_abortx(krb5_context context, const char *fmt, ...) 183 __attribute__ ((noreturn, format (printf, 2, 3))) 184 { 185 FUNC(0, 0, 0); 186 abort(); 187 } 188 189 krb5_error_code 190 krb5_set_warn_dest(krb5_context context, krb5_log_facility *fac) 191 { 192 context->warn_dest = fac; 193 return 0; 194 } 195