1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
* Copyright (c) 2011 Collabora Ltd
* Copyright (c) 2012 Stef Walter
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*
* CONTRIBUTORS
* Stef Walter <stef@thewalter.net>
*/
#include "config.h"
/*
* Oh god. glibc is nasty. Changes behavior and definitions of POSIX
* functions to completely different signatures depending on defines
*/
#define _POSIX_C_SOURCE 200112L
#include "compat.h"
#define P11_DEBUG_FLAG P11_DEBUG_LIB
#include "debug.h"
#include "message.h"
#include <assert.h>
#include <errno.h>
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
static bool print_messages = false;
#ifdef HAVE_LOCALE_H
locale_t p11_message_locale = (locale_t) 0;
#endif
static char *
default_message_storage (void)
{
static char message[P11_MESSAGE_MAX] = { 0, };
return message;
}
/* Function pointer declared in message.h as extern */
char * (* p11_message_storage) (void) = default_message_storage;
void
p11_message_store (const char* msg,
size_t length)
{
char *buffer;
/*
* p11_message_storage() is called to get a storage location for
* the last message. It defaults to a globally allocated buffer
* but is overridden in library.c with a function that returns
* per thread buffers.
*
* The returned value is P11_MESSAGE_MAX bytes long
*/
buffer = p11_message_storage ();
if (length > P11_MESSAGE_MAX - 1)
length = P11_MESSAGE_MAX - 1;
if (buffer != NULL) {
memcpy (buffer, msg, length);
buffer[length] = 0;
}
}
void
p11_message_err (int errnum,
const char* msg,
...)
{
char buffer[P11_MESSAGE_MAX];
char strerr[P11_MESSAGE_MAX];
va_list va;
size_t length;
va_start (va, msg);
length = vsnprintf (buffer, P11_MESSAGE_MAX - 1, msg, va);
va_end (va);
/* Was it truncated? */
if (length > P11_MESSAGE_MAX - 1)
length = P11_MESSAGE_MAX - 1;
buffer[length] = 0;
snprintf (strerr, sizeof (strerr), "Unknown error %d", errnum);
#if defined(HAVE_STRERROR_L) && defined(HAVE_NEWLOCALE)
if (p11_message_locale != (locale_t) 0)
strncpy (strerr, strerror_l (errnum, p11_message_locale), sizeof (strerr));
#else
strerror_r (errnum, strerr, sizeof (strerr));
#endif
strerr[P11_MESSAGE_MAX - 1] = 0;
p11_message ("%s: %s", buffer, strerr);
}
void
p11_message (const char* msg,
...)
{
char buffer[P11_MESSAGE_MAX];
va_list va;
size_t length;
va_start (va, msg);
length = vsnprintf (buffer, P11_MESSAGE_MAX - 1, msg, va);
va_end (va);
/* Was it truncated? */
if (length > P11_MESSAGE_MAX - 1)
length = P11_MESSAGE_MAX - 1;
buffer[length] = 0;
/* If printing is not disabled, just print out */
if (print_messages)
fprintf (stderr, "p11-kit: %s\n", buffer);
else
p11_debug_message (P11_DEBUG_LIB, "message: %s", buffer);
p11_message_store (buffer, length);
}
void
p11_message_quiet (void)
{
print_messages = false;
}
void
p11_message_loud (void)
{
print_messages = true;
}
const char *
p11_message_last (void)
{
char *buffer;
buffer = p11_message_storage ();
return buffer && buffer[0] ? buffer : NULL;
}
void
p11_message_clear (void)
{
char *buffer;
buffer = p11_message_storage ();
if (buffer != NULL)
buffer[0] = 0;
}
|
