int
main (int argc, char *argv[])
{
DBusConnection *connection;
DBusError error;
DBusBusType type = DBUS_BUS_SESSION;
DBusHandleMessageFunction filter_func = monitor_filter_func;
char *address = NULL;
dbus_bool_t seen_bus_type = FALSE;
BinaryMode binary_mode = BINARY_MODE_NOT;
int i = 0, j = 0, numFilters = 0;
char **filters = NULL;
/* Set stdout to be unbuffered; this is basically so that if people
* do dbus-monitor > file, then send SIGINT via Control-C, they
* don't lose the last chunk of messages.
*/
#ifdef DBUS_WIN
setvbuf (stdout, NULL, _IONBF, 0);
#else
setvbuf (stdout, NULL, _IOLBF, 0);
#endif
for (i = 1; i < argc; i++)
{
char *arg = argv[i];
if (!strcmp (arg, "--system"))
{
only_one_type (&seen_bus_type, argv[0]);
type = DBUS_BUS_SYSTEM;
}
else if (!strcmp (arg, "--session"))
{
only_one_type (&seen_bus_type, argv[0]);
type = DBUS_BUS_SESSION;
}
else if (!strcmp (arg, "--address"))
{
only_one_type (&seen_bus_type, argv[0]);
if (i+1 < argc)
{
address = argv[i+1];
i++;
}
else
usage (argv[0], 1);
}
else if (!strcmp (arg, "--help"))
usage (argv[0], 0);
else if (!strcmp (arg, "--monitor"))
{
filter_func = monitor_filter_func;
binary_mode = BINARY_MODE_NOT;
}
else if (!strcmp (arg, "--profile"))
{
filter_func = profile_filter_func;
binary_mode = BINARY_MODE_NOT;
}
else if (!strcmp (arg, "--binary"))
{
filter_func = binary_filter_func;
binary_mode = BINARY_MODE_RAW;
}
else if (!strcmp (arg, "--pcap"))
{
filter_func = binary_filter_func;
binary_mode = BINARY_MODE_PCAP;
}
else if (!strcmp (arg, "--"))
continue;
else if (arg[0] == '-')
usage (argv[0], 1);
else {
unsigned int filter_len;
numFilters++;
/* Prepend a rule (and a comma) to enable the monitor to eavesdrop.
* Prepending allows the user to add eavesdrop=false at command line
* in order to disable eavesdropping when needed */
filter_len = strlen (EAVESDROPPING_RULE) + 1 + strlen (arg) + 1;
filters = (char **) realloc (filters, numFilters * sizeof (char *));
if (filters == NULL)
tool_oom ("adding a new filter slot");
filters[j] = (char *) malloc (filter_len);
if (filters[j] == NULL)
tool_oom ("adding a new filter");
snprintf (filters[j], filter_len, "%s,%s", EAVESDROPPING_RULE, arg);
j++;
}
}
dbus_error_init (&error);
if (address != NULL)
{
connection = dbus_connection_open (address, &error);
if (connection)
{
if (!dbus_bus_register (connection, &error))
{
fprintf (stderr, "Failed to register connection to bus at %s: %s\n",
address, error.message);
dbus_error_free (&error);
exit (1);
}
}
}
else
connection = dbus_bus_get (type, &error);
if (connection == NULL)
{
const char *where;
if (address != NULL)
where = address;
else
{
switch (type)
{
case DBUS_BUS_SYSTEM:
where = "system bus";
break;
case DBUS_BUS_SESSION:
where = "session bus";
break;
default:
where = "";
}
}
fprintf (stderr, "Failed to open connection to %s: %s\n",
where,
error.message);
dbus_error_free (&error);
exit (1);
}
/* Receive o.fd.Peer messages as normal messages, rather than having
* libdbus handle them internally, which is the wrong thing for
* a monitor */
dbus_connection_set_route_peer_messages (connection, TRUE);
if (!dbus_connection_add_filter (connection, filter_func,
_DBUS_INT_TO_POINTER (binary_mode), NULL))
{
fprintf (stderr, "Couldn't add filter!\n");
exit (1);
}
if (become_monitor (connection, numFilters,
(const char * const *) filters))
{
/* no more preparation needed */
}
else if (numFilters)
{
size_t offset = 0;
for (i = 0; i < j; i++)
{
dbus_bus_add_match (connection, filters[i] + offset, &error);
if (dbus_error_is_set (&error) && i == 0 && offset == 0)
{
/* We might be talking to a pre-1.5.6 dbus-daemon
* which wouldn't understand eavesdrop=true.
* If this works, carry on with offset > 0
* on the remaining iterations. */
offset = strlen (EAVESDROPPING_RULE) + 1;
dbus_error_free (&error);
dbus_bus_add_match (connection, filters[i] + offset, &error);
}
if (dbus_error_is_set (&error))
{
fprintf (stderr, "Failed to setup match \"%s\": %s\n",
filters[i], error.message);
dbus_error_free (&error);
exit (1);
}
free(filters[i]);
}
}
else
{
dbus_bus_add_match (connection,
EAVESDROPPING_RULE,
&error);
if (dbus_error_is_set (&error))
{
dbus_error_free (&error);
dbus_bus_add_match (connection,
"",
&error);
if (dbus_error_is_set (&error))
goto lose;
}
}
switch (binary_mode)
{
case BINARY_MODE_NOT:
case BINARY_MODE_RAW:
break;
case BINARY_MODE_PCAP:
{
/* We're not using libpcap because the file format is simple
* enough not to need it.
* http://wiki.wireshark.org/Development/LibpcapFileFormat */
struct {
dbus_uint32_t magic;
dbus_uint16_t major_version;
dbus_uint16_t minor_version;
dbus_int32_t timezone;
dbus_uint32_t precision;
dbus_uint32_t max_length;
dbus_uint32_t link_type;
} header = {
0xA1B2C3D4U, /* magic number */
2, 4, /* v2.4 */
0, /* capture in GMT */
0, /* no opinion on timestamp precision */
(1 << 27), /* D-Bus spec says so */
LINKTYPE_DBUS
};
/* Assert that there is no padding */
_DBUS_STATIC_ASSERT (sizeof (header) == 24);
if (!tool_write_all (STDOUT_FILENO, &header, sizeof (header)))
{
perror ("dbus-monitor: write");
exit (1);
}
}
break;
}
while (dbus_connection_read_write_dispatch(connection, -1))
;
exit (0);
lose:
fprintf (stderr, "Error: %s\n", error.message);
exit (1);
}
/**
* @ingroup DBusSignatureInternals
* Unit test for DBusSignature.
*
* @returns #TRUE on success.
*/
dbus_bool_t
_dbus_signature_test (void)
{
DBusSignatureIter iter;
DBusSignatureIter subiter;
DBusSignatureIter subsubiter;
DBusSignatureIter subsubsubiter;
const char *sig;
dbus_bool_t boolres;
_DBUS_STATIC_ASSERT (sizeof (DBusSignatureIter) >= sizeof (DBusSignatureRealIter));
sig = "";
_dbus_assert (dbus_signature_validate (sig, NULL));
_dbus_assert (!dbus_signature_validate_single (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_INVALID);
sig = DBUS_TYPE_STRING_AS_STRING;
_dbus_assert (dbus_signature_validate (sig, NULL));
_dbus_assert (dbus_signature_validate_single (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_STRING);
sig = DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_BYTE_AS_STRING;
_dbus_assert (dbus_signature_validate (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_STRING);
boolres = dbus_signature_iter_next (&iter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_BYTE);
sig = DBUS_TYPE_UINT16_AS_STRING
DBUS_STRUCT_BEGIN_CHAR_AS_STRING
DBUS_TYPE_STRING_AS_STRING
DBUS_TYPE_UINT32_AS_STRING
DBUS_TYPE_VARIANT_AS_STRING
DBUS_TYPE_DOUBLE_AS_STRING
DBUS_STRUCT_END_CHAR_AS_STRING;
_dbus_assert (dbus_signature_validate (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_UINT16);
boolres = dbus_signature_iter_next (&iter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_STRUCT);
dbus_signature_iter_recurse (&iter, &subiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_STRING);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_UINT32);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_VARIANT);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_DOUBLE);
sig = DBUS_TYPE_UINT16_AS_STRING
DBUS_STRUCT_BEGIN_CHAR_AS_STRING
DBUS_TYPE_UINT32_AS_STRING
DBUS_TYPE_BYTE_AS_STRING
DBUS_TYPE_ARRAY_AS_STRING
DBUS_TYPE_ARRAY_AS_STRING
DBUS_TYPE_DOUBLE_AS_STRING
DBUS_STRUCT_BEGIN_CHAR_AS_STRING
DBUS_TYPE_BYTE_AS_STRING
DBUS_STRUCT_END_CHAR_AS_STRING
DBUS_STRUCT_END_CHAR_AS_STRING;
_dbus_assert (dbus_signature_validate (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_UINT16);
boolres = dbus_signature_iter_next (&iter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_STRUCT);
dbus_signature_iter_recurse (&iter, &subiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_UINT32);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_BYTE);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_ARRAY);
_dbus_assert (dbus_signature_iter_get_element_type (&subiter) == DBUS_TYPE_ARRAY);
dbus_signature_iter_recurse (&subiter, &subsubiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subsubiter) == DBUS_TYPE_ARRAY);
_dbus_assert (dbus_signature_iter_get_element_type (&subsubiter) == DBUS_TYPE_DOUBLE);
dbus_signature_iter_recurse (&subsubiter, &subsubsubiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subsubsubiter) == DBUS_TYPE_DOUBLE);
boolres = dbus_signature_iter_next (&subiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subiter) == DBUS_TYPE_STRUCT);
dbus_signature_iter_recurse (&subiter, &subsubiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subsubiter) == DBUS_TYPE_BYTE);
sig = DBUS_TYPE_ARRAY_AS_STRING
DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
DBUS_TYPE_INT16_AS_STRING
DBUS_TYPE_STRING_AS_STRING
DBUS_DICT_ENTRY_END_CHAR_AS_STRING
DBUS_TYPE_VARIANT_AS_STRING;
_dbus_assert (dbus_signature_validate (sig, NULL));
_dbus_assert (!dbus_signature_validate_single (sig, NULL));
dbus_signature_iter_init (&iter, sig);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_ARRAY);
_dbus_assert (dbus_signature_iter_get_element_type (&iter) == DBUS_TYPE_DICT_ENTRY);
dbus_signature_iter_recurse (&iter, &subiter);
dbus_signature_iter_recurse (&subiter, &subsubiter);
_dbus_assert (dbus_signature_iter_get_current_type (&subsubiter) == DBUS_TYPE_INT16);
boolres = dbus_signature_iter_next (&subsubiter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&subsubiter) == DBUS_TYPE_STRING);
boolres = dbus_signature_iter_next (&subsubiter);
_dbus_assert (!boolres);
boolres = dbus_signature_iter_next (&iter);
_dbus_assert (boolres);
_dbus_assert (dbus_signature_iter_get_current_type (&iter) == DBUS_TYPE_VARIANT);
boolres = dbus_signature_iter_next (&iter);
_dbus_assert (!boolres);
sig = DBUS_TYPE_DICT_ENTRY_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_TYPE_ARRAY_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_TYPE_UINT32_AS_STRING
DBUS_TYPE_ARRAY_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_TYPE_ARRAY_AS_STRING
DBUS_TYPE_DICT_ENTRY_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_DICT_ENTRY_END_CHAR_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
DBUS_TYPE_INT32_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
DBUS_TYPE_INT32_AS_STRING
DBUS_TYPE_STRING_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_STRUCT_END_CHAR_AS_STRING
DBUS_STRUCT_BEGIN_CHAR_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
sig = DBUS_STRUCT_BEGIN_CHAR_AS_STRING
DBUS_TYPE_BOOLEAN_AS_STRING;
_dbus_assert (!dbus_signature_validate (sig, NULL));
return TRUE;
#if 0
oom:
_dbus_assert_not_reached ("out of memory");
return FALSE;
#endif
}
static DBusHandlerResult
binary_filter_func (DBusConnection *connection,
DBusMessage *message,
void *user_data)
{
BinaryMode mode = _DBUS_POINTER_TO_INT (user_data);
char *blob;
int len;
/* It would be nice if we could do a zero-copy "peek" one day, but libdbus
* is so copy-happy that this isn't really a big deal.
*/
if (!dbus_message_marshal (message, &blob, &len))
tool_oom ("retrieving message");
switch (mode)
{
case BINARY_MODE_PCAP:
{
long tv_sec, tv_usec;
/* seconds, microseconds, bytes captured (possibly truncated),
* original length.
* http://wiki.wireshark.org/Development/LibpcapFileFormat
*/
dbus_uint32_t header[4] = { 0, 0, len, len };
/* If this gets padded then we'd need to write it out in pieces */
_DBUS_STATIC_ASSERT (sizeof (header) == 16);
_dbus_get_real_time (&tv_sec, &tv_usec);
header[0] = tv_sec;
header[1] = tv_usec;
if (!tool_write_all (STDOUT_FILENO, header, sizeof (header)))
{
perror ("dbus-monitor: write");
exit (1);
}
}
break;
case BINARY_MODE_RAW:
default:
/* nothing special, just the raw message stream */
break;
}
if (!tool_write_all (STDOUT_FILENO, blob, len))
{
perror ("dbus-monitor: write");
exit (1);
}
dbus_free (blob);
if (dbus_message_is_signal (message,
DBUS_INTERFACE_LOCAL,
"Disconnected"))
exit (0);
return DBUS_HANDLER_RESULT_HANDLED;
}