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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/* assuan-util.c - Utility functions for Assuan
* Copyright (C) 2001, 2002 Free Software Foundation, Inc.
*
* This file is part of Assuan.
*
* Assuan is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Assuan is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "assuan-defs.h"
#ifdef HAVE_JNLIB_LOGGING
#include "../jnlib/logging.h"
#endif
ssize_t (*_assuan_read_wrapper)(int,void*,size_t) = NULL;
ssize_t (*_assuan_write_wrapper)(int,const void*,size_t) = NULL;
static void *(*alloc_func)(size_t n) = malloc;
static void *(*realloc_func)(void *p, size_t n) = realloc;
static void (*free_func)(void*) = free;
void
assuan_set_malloc_hooks ( void *(*new_alloc_func)(size_t n),
void *(*new_realloc_func)(void *p, size_t n),
void (*new_free_func)(void*) )
{
alloc_func = new_alloc_func;
realloc_func = new_realloc_func;
free_func = new_free_func;
}
void *
_assuan_malloc (size_t n)
{
return alloc_func (n);
}
void *
_assuan_realloc (void *a, size_t n)
{
return realloc_func (a, n);
}
void *
_assuan_calloc (size_t n, size_t m)
{
void *p = _assuan_malloc (n*m);
if (p)
memset (p, 0, n* m);
return p;
}
void
_assuan_free (void *p)
{
if (p)
free_func (p);
}
/* For use with Pth it is required to have special read and write
functions. We can't assume an ELF based system so we have to
explicitly set them if we are going to use Pth. */
void
assuan_set_io_func (ssize_t (*r)(int,void*,size_t),
ssize_t (*w)(int,const void*,size_t))
{
_assuan_read_wrapper = r;
_assuan_write_wrapper = w;
}
/* Store the error in the context so that the error sending function
can take out a descriptive text. Inside the assuan code, use the
macro set_error instead of this function. */
int
assuan_set_error (ASSUAN_CONTEXT ctx, int err, const char *text)
{
ctx->err_no = err;
ctx->err_str = text;
return err;
}
void
assuan_set_pointer (ASSUAN_CONTEXT ctx, void *pointer)
{
if (ctx)
ctx->user_pointer = pointer;
}
void *
assuan_get_pointer (ASSUAN_CONTEXT ctx)
{
return ctx? ctx->user_pointer : NULL;
}
void
assuan_set_log_stream (ASSUAN_CONTEXT ctx, FILE *fp)
{
if (ctx)
{
if (ctx->log_fp)
fflush (ctx->log_fp);
ctx->log_fp = fp;
}
}
void
assuan_begin_confidential (ASSUAN_CONTEXT ctx)
{
if (ctx)
{
ctx->confidential = 1;
}
}
void
assuan_end_confidential (ASSUAN_CONTEXT ctx)
{
if (ctx)
{
ctx->confidential = 0;
}
}
void
_assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length)
{
const unsigned char *s;
int n;
for (n=length,s=buffer; n; n--, s++)
{
if (*s < ' ' || (*s >= 0x7f && *s <= 0xa0))
break;
}
s = buffer;
if (!n && *s != '[')
fwrite (buffer, length, 1, fp);
else
{
putc ('[', fp);
for (n=0; n < length; n++, s++)
fprintf (fp, " %02x", *s);
putc (' ', fp);
putc (']', fp);
}
}
/* print a user supplied string after filtering out potential bad
characters*/
void
_assuan_log_sanitized_string (const char *string)
{
const unsigned char *s = string;
#ifdef HAVE_JNLIB_LOGGING
FILE *fp = log_get_stream ();
#else
FILE *fp = stderr;
#endif
for (; *s; s++)
{
if (*s < 0x20 || (*s >= 0x7f && *s <= 0xa0))
{
putc ('\\', fp);
if (*s == '\n')
putc ('n', fp);
else if (*s == '\r')
putc ('r', fp);
else if (*s == '\f')
putc ('f', fp);
else if (*s == '\v')
putc ('v', fp);
else if (*s == '\b')
putc ('b', fp);
else if (!*s)
putc ('0', fp);
else
fprintf (fp, "x%02x", *s );
}
else
putc (*s, fp);
}
}
|
