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
211
212
213
214
215
216
217
218
219
220
221
|
/* debug.c - helpful output in desperate situations
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
This file is part of GPGME.
GPGME 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.
GPGME 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., 51 Franklin Street, Fifth Floor, Boston, MA
02111-1307, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <ctype.h>
#ifndef HAVE_DOSISH_SYSTEM
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
#include <assert.h>
#include "util.h"
#include "sema.h"
/* Lock to serialize initialization of the debug output subsystem and
output of actual debug messages. */
DEFINE_STATIC_LOCK (debug_lock);
/* The amount of detail requested by the user, per environment
variable GPGME_DEBUG. */
static int debug_level;
/* The output stream for the debug messages. */
static FILE *errfp;
/* Remove leading and trailing white spaces. */
static char *
trim_spaces (char *str)
{
char *string, *p, *mark;
string = str;
/* Find first non space character. */
for (p = string; *p && isspace (*(unsigned char *) p); p++)
;
/* Move characters. */
for (mark = NULL; (*string = *p); string++, p++)
if (isspace (*(unsigned char *) p))
{
if (!mark)
mark = string;
}
else
mark = NULL;
if (mark)
*mark = '\0'; /* Remove trailing spaces. */
return str;
}
static void
debug_init (void)
{
static int initialized;
LOCK (debug_lock);
if (!initialized)
{
gpgme_error_t err;
char *e;
const char *s1, *s2;;
err = _gpgme_getenv ("GPGME_DEBUG", &e);
if (err)
{
UNLOCK (debug_lock);
return;
}
initialized = 1;
errfp = stderr;
if (e)
{
debug_level = atoi (e);
s1 = strchr (e, PATHSEP_C);
if (s1)
{
#ifndef HAVE_DOSISH_SYSTEM
if (getuid () == geteuid ())
{
#endif
char *p;
FILE *fp;
s1++;
if (!(s2 = strchr (s1, PATHSEP_C)))
s2 = s1 + strlen (s1);
p = malloc (s2 - s1 + 1);
if (p)
{
memcpy (p, s1, s2 - s1);
p[s2-s1] = 0;
trim_spaces (p);
fp = fopen (p,"a");
if (fp)
{
setvbuf (fp, NULL, _IOLBF, 0);
errfp = fp;
}
free (p);
}
#ifndef HAVE_DOSISH_SYSTEM
}
#endif
}
free (e);
}
if (debug_level > 0)
fprintf (errfp, "gpgme_debug: level=%d\n", debug_level);
}
UNLOCK (debug_lock);
}
/* Log the formatted string FORMAT at debug level LEVEL or higher. */
void
_gpgme_debug (int level, const char *format, ...)
{
va_list arg_ptr;
debug_init ();
if (debug_level < level)
return;
va_start (arg_ptr, format);
LOCK (debug_lock);
vfprintf (errfp, format, arg_ptr);
va_end (arg_ptr);
if(format && *format && format[strlen (format) - 1] != '\n')
putc ('\n', errfp);
UNLOCK (debug_lock);
fflush (errfp);
}
/* Start a new debug line in *LINE, logged at level LEVEL or higher,
and starting with the formatted string FORMAT. */
void
_gpgme_debug_begin (void **line, int level, const char *format, ...)
{
va_list arg_ptr;
debug_init ();
if (debug_level < level)
{
/* Disable logging of this line. */
*line = NULL;
return;
}
va_start (arg_ptr, format);
vasprintf ((char **) line, format, arg_ptr);
va_end (arg_ptr);
}
/* Add the formatted string FORMAT to the debug line *LINE. */
void
_gpgme_debug_add (void **line, const char *format, ...)
{
va_list arg_ptr;
char *toadd;
char *result;
if (!*line)
return;
va_start (arg_ptr, format);
vasprintf (&toadd, format, arg_ptr);
va_end (arg_ptr);
asprintf (&result, "%s%s", *(char **) line, toadd);
free (*line);
free (toadd);
*line = result;
}
/* Finish construction of *LINE and send it to the debug output
stream. */
void
_gpgme_debug_end (void **line)
{
if (!*line)
return;
/* The smallest possible level is 1, so force logging here by
using that. */
_gpgme_debug (1, "%s", *line);
free (*line);
*line = NULL;
}
|
