1 /* 2 * Copyright (c) 1997 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 1.10 1999/12/02 17:05:13 joda 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 arg = args; 48 if(fmt){ 49 strcat(xfmt, "%s"); 50 if(do_errtext) 51 strcat(xfmt, ": "); 52 vasprintf(&msg, fmt, ap); 53 if(msg == NULL) 54 return ENOMEM; 55 *arg++ = msg; 56 } 57 if(context && do_errtext){ 58 const char *err_msg; 59 60 strcat(xfmt, "%s"); 61 62 err_msg = krb5_get_err_text(context, code); 63 if (err_msg) 64 *arg++ = err_msg; 65 else 66 *arg++ = "<unknown error>"; 67 } 68 69 if(context && context->warn_dest) 70 krb5_log(context, context->warn_dest, level, xfmt, args[0], args[1]); 71 else 72 warnx(xfmt, args[0], args[1]); 73 free(msg); 74 return 0; 75 } 76 77 #define FUNC(ETEXT, CODE, LEVEL) \ 78 krb5_error_code ret; \ 79 va_list ap; \ 80 va_start(ap, fmt); \ 81 ret = _warnerr(context, ETEXT, CODE, LEVEL, fmt, ap); \ 82 va_end(ap); 83 84 #undef __attribute__ 85 #define __attribute__(X) 86 87 krb5_error_code 88 krb5_vwarn(krb5_context context, krb5_error_code code, 89 const char *fmt, va_list ap) 90 __attribute__ ((format (printf, 3, 0))) 91 { 92 return _warnerr(context, 1, code, 1, fmt, ap); 93 } 94 95 96 krb5_error_code 97 krb5_warn(krb5_context context, krb5_error_code code, const char *fmt, ...) 98 __attribute__ ((format (printf, 3, 4))) 99 { 100 FUNC(1, code, 1); 101 return ret; 102 } 103 104 krb5_error_code 105 krb5_vwarnx(krb5_context context, const char *fmt, va_list ap) 106 __attribute__ ((format (printf, 2, 0))) 107 { 108 return _warnerr(context, 0, 0, 1, fmt, ap); 109 } 110 111 krb5_error_code 112 krb5_warnx(krb5_context context, const char *fmt, ...) 113 __attribute__ ((format (printf, 2, 3))) 114 { 115 FUNC(0, 0, 1); 116 return ret; 117 } 118 119 krb5_error_code 120 krb5_verr(krb5_context context, int eval, krb5_error_code code, 121 const char *fmt, va_list ap) 122 __attribute__ ((noreturn, format (printf, 4, 0))) 123 { 124 _warnerr(context, 1, code, 0, fmt, ap); 125 exit(eval); 126 } 127 128 129 krb5_error_code 130 krb5_err(krb5_context context, int eval, krb5_error_code code, 131 const char *fmt, ...) 132 __attribute__ ((noreturn, format (printf, 4, 5))) 133 { 134 FUNC(1, code, 0); 135 exit(eval); 136 } 137 138 krb5_error_code 139 krb5_verrx(krb5_context context, int eval, const char *fmt, va_list ap) 140 __attribute__ ((noreturn, format (printf, 3, 0))) 141 { 142 _warnerr(context, 0, 0, 0, fmt, ap); 143 exit(eval); 144 } 145 146 krb5_error_code 147 krb5_errx(krb5_context context, int eval, const char *fmt, ...) 148 __attribute__ ((noreturn, format (printf, 3, 4))) 149 { 150 FUNC(0, 0, 0); 151 exit(eval); 152 } 153 154 krb5_error_code 155 krb5_vabort(krb5_context context, krb5_error_code code, 156 const char *fmt, va_list ap) 157 __attribute__ ((noreturn, format (printf, 3, 0))) 158 { 159 _warnerr(context, 1, code, 0, fmt, ap); 160 abort(); 161 } 162 163 164 krb5_error_code 165 krb5_abort(krb5_context context, krb5_error_code code, const char *fmt, ...) 166 __attribute__ ((noreturn, format (printf, 3, 4))) 167 { 168 FUNC(1, code, 0); 169 abort(); 170 } 171 172 krb5_error_code 173 krb5_vabortx(krb5_context context, const char *fmt, va_list ap) 174 __attribute__ ((noreturn, format (printf, 2, 0))) 175 { 176 _warnerr(context, 0, 0, 0, fmt, ap); 177 abort(); 178 } 179 180 krb5_error_code 181 krb5_abortx(krb5_context context, const char *fmt, ...) 182 __attribute__ ((noreturn, format (printf, 2, 3))) 183 { 184 FUNC(0, 0, 0); 185 abort(); 186 } 187 188 krb5_error_code 189 krb5_set_warn_dest(krb5_context context, krb5_log_facility *fac) 190 { 191 context->warn_dest = fac; 192 return 0; 193 } 194