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-rw-r--r--src/debug.c169
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diff --git a/src/debug.c b/src/debug.c
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1/*
2 * debug.c
3 * contains utilitary functions for debugging
4 *
5 * Copyright (c) 2008 Jonathan Beck All Rights Reserved.
6 * Copyright (c) 2010 Martin S. All Rights Reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#ifdef HAVE_CONFIG_H
24#include <config.h>
25#endif
26#include <stdarg.h>
27#define _GNU_SOURCE 1
28#define __USE_GNU 1
29#include <stdio.h>
30#include <stdint.h>
31#include <stdlib.h>
32#include <time.h>
33
34#include "debug.h"
35#include "libimobiledevice/libimobiledevice.h"
36
37#ifndef STRIP_DEBUG_CODE
38#include "asprintf.h"
39#endif
40
41int debug_level = 0;
42
43/**
44 * Sets the level of debugging. Currently the only acceptable values are 0 and
45 * 1.
46 *
47 * @param level Set to 0 for no debugging or 1 for debugging.
48 */
49void idevice_set_debug_level(int level)
50{
51 debug_level = level;
52}
53
54#ifndef STRIP_DEBUG_CODE
55static void debug_print_line(const char *func, const char *file, int line, const char *buffer)
56{
57 char *str_time = NULL;
58 char *header = NULL;
59 time_t the_time;
60
61 time(&the_time);
62 str_time = (char*)malloc(255);
63 strftime(str_time, 254, "%H:%M:%S", localtime (&the_time));
64
65 /* generate header text */
66 (void)asprintf(&header, "%s %s:%d %s()", str_time, file, line, func);
67 free (str_time);
68
69 /* trim ending newlines */
70
71 /* print header */
72 printf ("%s: ", header);
73
74 /* print actual debug content */
75 printf ("%s\n", buffer);
76
77 /* flush this output, as we need to debug */
78 fflush (stdout);
79
80 free (header);
81}
82#endif
83
84inline void debug_info_real(const char *func, const char *file, int line, const char *format, ...)
85{
86#ifndef STRIP_DEBUG_CODE
87 va_list args;
88 char *buffer = NULL;
89
90 if (!debug_level)
91 return;
92
93 /* run the real fprintf */
94 va_start(args, format);
95 (void)vasprintf(&buffer, format, args);
96 va_end(args);
97
98 debug_print_line(func, file, line, buffer);
99
100 free(buffer);
101#endif
102}
103
104inline void debug_buffer(const char *data, const int length)
105{
106#ifndef STRIP_DEBUG_CODE
107 int i;
108 int j;
109 unsigned char c;
110
111 if (debug_level) {
112 for (i = 0; i < length; i += 16) {
113 fprintf(stderr, "%04x: ", i);
114 for (j = 0; j < 16; j++) {
115 if (i + j >= length) {
116 fprintf(stderr, " ");
117 continue;
118 }
119 fprintf(stderr, "%02hhx ", *(data + i + j));
120 }
121 fprintf(stderr, " | ");
122 for (j = 0; j < 16; j++) {
123 if (i + j >= length)
124 break;
125 c = *(data + i + j);
126 if ((c < 32) || (c > 127)) {
127 fprintf(stderr, ".");
128 continue;
129 }
130 fprintf(stderr, "%c", c);
131 }
132 fprintf(stderr, "\n");
133 }
134 fprintf(stderr, "\n");
135 }
136#endif
137}
138
139inline void debug_buffer_to_file(const char *file, const char *data, const int length)
140{
141#ifndef STRIP_DEBUG_CODE
142 if (debug_level) {
143 FILE *f = fopen(file, "wb");
144 fwrite(data, 1, length, f);
145 fflush(f);
146 fclose(f);
147 }
148#endif
149}
150
151inline void debug_plist_real(const char *func, const char *file, int line, plist_t plist)
152{
153#ifndef STRIP_DEBUG_CODE
154 if (!plist)
155 return;
156
157 char *buffer = NULL;
158 uint32_t length = 0;
159 plist_to_xml(plist, &buffer, &length);
160
161 /* get rid of ending newline as one is already added in the debug line */
162 if (buffer[length-1] == '\n')
163 buffer[length-1] = '\0';
164
165 debug_info_real(func, file, line, "printing %i bytes plist:\n%s", length, buffer);
166 free(buffer);
167#endif
168}
169