2 * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
40 struct et_list *_et_list = NULL;
43 KRB5_LIB_FUNCTION const char * KRB5_LIB_CALL
44 error_message (long code)
47 const char *p = com_right(_et_list, code);
50 snprintf(msg, sizeof(msg), "Unknown error %ld", code);
54 if (p != NULL && *p != '\0') {
55 strlcpy(msg, p, sizeof(msg));
57 snprintf(msg, sizeof(msg), "Unknown error %ld", code);
61 KRB5_LIB_FUNCTION int KRB5_LIB_CALL
62 init_error_table(const char **msgs, long base, int count)
64 initialize_error_table_r(&_et_list, msgs, count, base);
68 static void KRB5_CALLCONV
69 default_proc (const char *whoami, long code, const char *fmt, va_list args)
70 __attribute__((__format__(__printf__, 3, 0)));
72 static void KRB5_CALLCONV
73 default_proc (const char *whoami, long code, const char *fmt, va_list args)
76 fprintf(stderr, "%s: ", whoami);
78 fprintf(stderr, "%s ", error_message(code));
80 vfprintf(stderr, fmt, args);
81 fprintf(stderr, "\r\n"); /* ??? */
84 static errf com_err_hook = default_proc;
86 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
87 com_err_va (const char *whoami,
92 (*com_err_hook) (whoami, code, fmt, args);
95 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
96 com_err (const char *whoami,
103 com_err_va (whoami, code, fmt, ap);
107 KRB5_LIB_FUNCTION errf KRB5_LIB_CALL
108 set_com_err_hook (errf new)
110 errf old = com_err_hook;
115 com_err_hook = default_proc;
120 KRB5_LIB_FUNCTION errf KRB5_LIB_CALL
121 reset_com_err_hook (void)
123 return set_com_err_hook(NULL);
126 #define ERRCODE_RANGE 8 /* # of bits to shift table number */
127 #define BITS_PER_CHAR 6 /* # bits to shift per character in name */
129 static const char char_set[] =
130 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
134 KRB5_LIB_FUNCTION const char * KRB5_LIB_CALL
135 error_table_name(int num)
141 /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
143 num >>= ERRCODE_RANGE;
144 /* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
146 /* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
147 for (i = 4; i >= 0; i--) {
148 ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
150 *p++ = char_set[ch-1];
156 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
157 add_to_error_table(struct et_list *new_table)
161 for (et = _et_list; et; et = et->next) {
162 if (et->table->base == new_table->table->base)
166 new_table->next = _et_list;
167 _et_list = new_table;