com_right.c revision 18a1444b4f1e6a0948fd38fa0de382d86cfe04de 
1/*
2 * com_right.c -- provide Heimdall / Kerberos4kth com_err interfaces
3 * 	for backwards compatbility
4 *
5 * Copyright (c) 2003 by Theodore Ts'o
6 *
7 * Taken from lib/com_err/error.c from Kerberos4kth distribution.
8 *
9 * Copyright (c) 1997, 1998, 2001 Kungliga Tekniska H�gskolan
10 * (Royal Institute of Technology, Stockholm, Sweden).
11 * All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 *    notice, this list of conditions and the following disclaimer in the
22 *    documentation and/or other materials provided with the distribution.
23 *
24 * 3. Neither the name of the Institute nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 */
40
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include "com_err.h"
45#include "error_table.h"
46
47const char *
48com_right(struct et_list *list, long code)
49{
50    struct et_list *p;
51    for (p = list; p; p = p->next) {
52	if (code >= p->table->base && code < p->table->base + p->table->n_msgs)
53	    return p->table->msgs[code - p->table->base];
54    }
55    return NULL;
56}
57
58const char *
59com_right_r(struct et_list *list, long code, char *str, size_t len)
60{
61    struct et_list *p;
62    for (p = list; p; p = p->next) {
63	if ((code >= p->table->base) &&
64	    (code < p->table->base + p->table->n_msgs)) {
65            strncpy(str, p->table->msgs[code - p->table->base], len);
66            str[len-1] = '\0';
67            return str;
68        }
69    }
70    return NULL;
71}
72
73struct foobar {
74    struct et_list etl;
75    struct error_table tab;
76};
77
78/*
79 * We provide this routine for compatibility with Heimdall generated
80 * foo_err.c files, but we don't use this ourselves for foo_err.c
81 * files generated by our compile_et.  This is so our foo_err.c
82 * files can be used with older com_err libraries without running
83 * afoul of dependencies.
84 */
85void
86initialize_error_table_r(struct et_list **list,
87			 const char **messages,
88			 int num_errors,
89			 long base)
90{
91    struct et_list *et, **end;
92    struct error_table *tab;
93    struct foobar *f;
94
95    for (end = list, et = *list; et; end = &et->next, et = et->next)
96        if (et->table->msgs == messages)
97            return;
98    f = malloc(sizeof(*f));
99    if (f == NULL)
100        return;
101    et = &f->etl;
102    et->table = tab = &f->tab;
103    tab->msgs = messages;
104    tab->n_msgs = num_errors;
105    tab->base = base;
106    et->next = NULL;
107    *end = et;
108}
109
110
111void
112free_error_table(struct et_list *et)
113{
114    while(et){
115	struct et_list *p = et;
116	et = et->next;
117	free(p);
118    }
119}
120