1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-print-message.h  Utility function to print out a message
3 *
4 * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
5 * Copyright (C) 2003 Red Hat, Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
20 *
21 */
22
23#include <config.h>
24#include "dbus-print-message.h"
25
26#include <stdlib.h>
27#include "config.h"
28
29static const char*
30type_to_name (int message_type)
31{
32  switch (message_type)
33    {
34    case DBUS_MESSAGE_TYPE_SIGNAL:
35      return "signal";
36    case DBUS_MESSAGE_TYPE_METHOD_CALL:
37      return "method call";
38    case DBUS_MESSAGE_TYPE_METHOD_RETURN:
39      return "method return";
40    case DBUS_MESSAGE_TYPE_ERROR:
41      return "error";
42    default:
43      return "(unknown message type)";
44    }
45}
46
47#define INDENT 3
48
49static void
50indent (int depth)
51{
52  while (depth-- > 0)
53    printf ("   "); /* INDENT spaces. */
54}
55
56static void
57print_hex (unsigned char *bytes, unsigned int len, int depth)
58{
59  unsigned int i, columns;
60
61  printf ("array of bytes [\n");
62
63  indent (depth + 1);
64
65  /* Each byte takes 3 cells (two hexits, and a space), except the last one. */
66  columns = (80 - ((depth + 1) * INDENT)) / 3;
67
68  if (columns < 8)
69    columns = 8;
70
71  i = 0;
72
73  while (i < len)
74    {
75      printf ("%02x", bytes[i]);
76      i++;
77
78      if (i != len)
79        {
80          if (i % columns == 0)
81            {
82              printf ("\n");
83              indent (depth + 1);
84            }
85          else
86            {
87              printf (" ");
88            }
89        }
90    }
91
92  printf ("\n");
93  indent (depth);
94  printf ("]\n");
95}
96
97#define DEFAULT_SIZE 100
98
99static void
100print_ay (DBusMessageIter *iter, int depth)
101{
102  /* Not using DBusString because it's not public API. It's 2009, and I'm
103   * manually growing a string chunk by chunk.
104   */
105  unsigned char *bytes = malloc (DEFAULT_SIZE + 1);
106  unsigned int len = 0;
107  unsigned int max = DEFAULT_SIZE;
108  dbus_bool_t all_ascii = TRUE;
109  int current_type;
110
111  while ((current_type = dbus_message_iter_get_arg_type (iter))
112          != DBUS_TYPE_INVALID)
113    {
114      unsigned char val;
115
116      dbus_message_iter_get_basic (iter, &val);
117      bytes[len] = val;
118      len++;
119
120      if (val < 32 || val > 126)
121        all_ascii = FALSE;
122
123      if (len == max)
124        {
125          max *= 2;
126          bytes = realloc (bytes, max + 1);
127        }
128
129      dbus_message_iter_next (iter);
130    }
131
132  if (all_ascii)
133    {
134      bytes[len] = '\0';
135      printf ("array of bytes \"%s\"\n", bytes);
136    }
137  else
138    {
139      print_hex (bytes, len, depth);
140    }
141
142  free (bytes);
143}
144
145static void
146print_iter (DBusMessageIter *iter, dbus_bool_t literal, int depth)
147{
148  do
149    {
150      int type = dbus_message_iter_get_arg_type (iter);
151
152      if (type == DBUS_TYPE_INVALID)
153	break;
154
155      indent(depth);
156
157      switch (type)
158	{
159	case DBUS_TYPE_STRING:
160	  {
161	    char *val;
162	    dbus_message_iter_get_basic (iter, &val);
163	    if (!literal)
164	      printf ("string \"");
165	    printf ("%s", val);
166	    if (!literal)
167	      printf ("\"\n");
168	    break;
169	  }
170
171	case DBUS_TYPE_SIGNATURE:
172	  {
173	    char *val;
174	    dbus_message_iter_get_basic (iter, &val);
175	    if (!literal)
176	      printf ("signature \"");
177	    printf ("%s", val);
178	    if (!literal)
179	      printf ("\"\n");
180	    break;
181	  }
182
183	case DBUS_TYPE_OBJECT_PATH:
184	  {
185	    char *val;
186	    dbus_message_iter_get_basic (iter, &val);
187	    if (!literal)
188	      printf ("object path \"");
189	    printf ("%s", val);
190	    if (!literal)
191	      printf ("\"\n");
192	    break;
193	  }
194
195	case DBUS_TYPE_INT16:
196	  {
197	    dbus_int16_t val;
198	    dbus_message_iter_get_basic (iter, &val);
199	    printf ("int16 %d\n", val);
200	    break;
201	  }
202
203	case DBUS_TYPE_UINT16:
204	  {
205	    dbus_uint16_t val;
206	    dbus_message_iter_get_basic (iter, &val);
207	    printf ("uint16 %u\n", val);
208	    break;
209	  }
210
211	case DBUS_TYPE_INT32:
212	  {
213	    dbus_int32_t val;
214	    dbus_message_iter_get_basic (iter, &val);
215	    printf ("int32 %d\n", val);
216	    break;
217	  }
218
219	case DBUS_TYPE_UINT32:
220	  {
221	    dbus_uint32_t val;
222	    dbus_message_iter_get_basic (iter, &val);
223	    printf ("uint32 %u\n", val);
224	    break;
225	  }
226
227	case DBUS_TYPE_INT64:
228	  {
229	    dbus_int64_t val;
230	    dbus_message_iter_get_basic (iter, &val);
231#ifdef DBUS_INT64_PRINTF_MODIFIER
232        printf ("int64 %" DBUS_INT64_PRINTF_MODIFIER "d\n", val);
233#else
234        printf ("int64 (omitted)\n");
235#endif
236	    break;
237	  }
238
239	case DBUS_TYPE_UINT64:
240	  {
241	    dbus_uint64_t val;
242	    dbus_message_iter_get_basic (iter, &val);
243#ifdef DBUS_INT64_PRINTF_MODIFIER
244        printf ("uint64 %" DBUS_INT64_PRINTF_MODIFIER "u\n", val);
245#else
246        printf ("uint64 (omitted)\n");
247#endif
248	    break;
249	  }
250
251	case DBUS_TYPE_DOUBLE:
252	  {
253	    double val;
254	    dbus_message_iter_get_basic (iter, &val);
255	    printf ("double %g\n", val);
256	    break;
257	  }
258
259	case DBUS_TYPE_BYTE:
260	  {
261	    unsigned char val;
262	    dbus_message_iter_get_basic (iter, &val);
263	    printf ("byte %d\n", val);
264	    break;
265	  }
266
267	case DBUS_TYPE_BOOLEAN:
268	  {
269	    dbus_bool_t val;
270	    dbus_message_iter_get_basic (iter, &val);
271	    printf ("boolean %s\n", val ? "true" : "false");
272	    break;
273	  }
274
275	case DBUS_TYPE_VARIANT:
276	  {
277	    DBusMessageIter subiter;
278
279	    dbus_message_iter_recurse (iter, &subiter);
280
281	    printf ("variant ");
282	    print_iter (&subiter, literal, depth+1);
283	    break;
284	  }
285	case DBUS_TYPE_ARRAY:
286	  {
287	    int current_type;
288	    DBusMessageIter subiter;
289
290	    dbus_message_iter_recurse (iter, &subiter);
291
292	    current_type = dbus_message_iter_get_arg_type (&subiter);
293
294	    if (current_type == DBUS_TYPE_BYTE)
295	      {
296		print_ay (&subiter, depth);
297		break;
298	      }
299
300	    printf("array [\n");
301	    while (current_type != DBUS_TYPE_INVALID)
302	      {
303		print_iter (&subiter, literal, depth+1);
304
305		dbus_message_iter_next (&subiter);
306		current_type = dbus_message_iter_get_arg_type (&subiter);
307
308		if (current_type != DBUS_TYPE_INVALID)
309		  printf (",");
310	      }
311	    indent(depth);
312	    printf("]\n");
313	    break;
314	  }
315	case DBUS_TYPE_DICT_ENTRY:
316	  {
317	    DBusMessageIter subiter;
318
319	    dbus_message_iter_recurse (iter, &subiter);
320
321	    printf("dict entry(\n");
322	    print_iter (&subiter, literal, depth+1);
323	    dbus_message_iter_next (&subiter);
324	    print_iter (&subiter, literal, depth+1);
325	    indent(depth);
326	    printf(")\n");
327	    break;
328	  }
329
330	case DBUS_TYPE_STRUCT:
331	  {
332	    int current_type;
333	    DBusMessageIter subiter;
334
335	    dbus_message_iter_recurse (iter, &subiter);
336
337	    printf("struct {\n");
338	    while ((current_type = dbus_message_iter_get_arg_type (&subiter)) != DBUS_TYPE_INVALID)
339	      {
340		print_iter (&subiter, literal, depth+1);
341		dbus_message_iter_next (&subiter);
342		if (dbus_message_iter_get_arg_type (&subiter) != DBUS_TYPE_INVALID)
343		  printf (",");
344	      }
345	    indent(depth);
346	    printf("}\n");
347	    break;
348	  }
349
350	default:
351	  printf (" (dbus-monitor too dumb to decipher arg type '%c')\n", type);
352	  break;
353	}
354    } while (dbus_message_iter_next (iter));
355}
356
357void
358print_message (DBusMessage *message, dbus_bool_t literal)
359{
360  DBusMessageIter iter;
361  const char *sender;
362  const char *destination;
363  int message_type;
364
365  message_type = dbus_message_get_type (message);
366  sender = dbus_message_get_sender (message);
367  destination = dbus_message_get_destination (message);
368
369  if (!literal)
370    {
371      printf ("%s sender=%s -> dest=%s",
372	      type_to_name (message_type),
373	      sender ? sender : "(null sender)",
374	      destination ? destination : "(null destination)");
375
376      switch (message_type)
377	{
378	case DBUS_MESSAGE_TYPE_METHOD_CALL:
379	case DBUS_MESSAGE_TYPE_SIGNAL:
380	  printf (" serial=%u path=%s; interface=%s; member=%s\n",
381                  dbus_message_get_serial (message),
382		  dbus_message_get_path (message),
383		  dbus_message_get_interface (message),
384		  dbus_message_get_member (message));
385	  break;
386
387	case DBUS_MESSAGE_TYPE_METHOD_RETURN:
388	  printf (" reply_serial=%u\n",
389          dbus_message_get_reply_serial (message));
390	  break;
391
392	case DBUS_MESSAGE_TYPE_ERROR:
393	  printf (" error_name=%s reply_serial=%u\n",
394		  dbus_message_get_error_name (message),
395          dbus_message_get_reply_serial (message));
396	  break;
397
398	default:
399	  printf ("\n");
400	  break;
401	}
402    }
403
404  dbus_message_iter_init (message, &iter);
405  print_iter (&iter, literal, 1);
406  fflush (stdout);
407
408}
409
410