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D-Bus: Add debug prints for parsing dict entries

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This makes it easier to figure out what happens if there are issues with
processing messages.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2014-12-31 21:33:21 +02:00
parent 605325fb75
commit 1d12c08847
1 changed files with 85 additions and 9 deletions
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94
wpa_supplicant/dbus/dbus_dict_helpers.c
View File

@ -707,14 +707,23 @@ dbus_bool_t wpa_dbus_dict_open_read(DBusMessageIter *iter,
DBusMessageIter *iter_dict,
DBusError *error)
{
int type;
wpa_printf(MSG_MSGDUMP, "%s: start reading a dict entry", __func__);
if (!iter || !iter_dict) {
dbus_set_error_const(error, DBUS_ERROR_FAILED,
"[internal] missing message iterators");
return FALSE;
}
if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_ARRAY ||
type = dbus_message_iter_get_arg_type(iter);
if (type != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(iter) != DBUS_TYPE_DICT_ENTRY) {
wpa_printf(MSG_DEBUG,
"%s: unexpected message argument types (arg=%c element=%c)",
__func__, type,
type != DBUS_TYPE_ARRAY ? '?' :
dbus_message_iter_get_element_type(iter));
dbus_set_error_const(error, DBUS_ERROR_INVALID_ARGS,
"unexpected message argument types");
return FALSE;
@ -768,6 +777,8 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_byte_array(
entry->array_len = ++count;
dbus_message_iter_next(iter);
}
wpa_hexdump_key(MSG_MSGDUMP, "dbus: byte array contents",
entry->bytearray_value, entry->array_len);
/* Zero-length arrays are valid. */
if (entry->array_len == 0) {
@ -823,6 +834,8 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_string_array(
entry->strarray_value = buffer;
dbus_message_iter_get_basic(iter, &value);
wpa_printf(MSG_MSGDUMP, "%s: string_array value: %s",
__func__, wpa_debug_show_keys ? value : "[omitted]");
str = os_strdup(value);
if (str == NULL) {
wpa_printf(MSG_ERROR, "dbus: _wpa_dbus_dict_entry_get_"
@ -834,6 +847,8 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_string_array(
entry->array_len = ++count;
dbus_message_iter_next(iter);
}
wpa_printf(MSG_MSGDUMP, "%s: string_array length %u",
__func__, entry->array_len);
/* Zero-length arrays are valid. */
if (entry->array_len == 0) {
@ -856,19 +871,30 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_binarray(
{
struct wpa_dbus_dict_entry tmpentry;
size_t buflen = 0;
int i;
int i, type;
entry->array_type = WPAS_DBUS_TYPE_BINARRAY;
entry->array_len = 0;
entry->binarray_value = NULL;
if (dbus_message_iter_get_arg_type(iter) == DBUS_TYPE_INVALID) {
type = dbus_message_iter_get_arg_type(iter);
wpa_printf(MSG_MSGDUMP, "%s: parsing binarray type %c", __func__, type);
if (type == DBUS_TYPE_INVALID) {
/* Likely an empty array of arrays */
return TRUE;
}
if (dbus_message_iter_get_element_type(iter) != DBUS_TYPE_BYTE)
if (type != DBUS_TYPE_ARRAY) {
wpa_printf(MSG_DEBUG, "%s: not an array type: %c",
__func__, type);
return FALSE;
}
type = dbus_message_iter_get_element_type(iter);
if (type != DBUS_TYPE_BYTE) {
wpa_printf(MSG_DEBUG, "%s: unexpected element type %c",
__func__, type);
return FALSE;
}
while (dbus_message_iter_get_arg_type(iter) == DBUS_TYPE_ARRAY) {
DBusMessageIter iter_array;
@ -902,6 +928,8 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_binarray(
entry->array_len++;
dbus_message_iter_next(iter);
}
wpa_printf(MSG_MSGDUMP, "%s: binarray length %u",
__func__, entry->array_len);
return TRUE;
@ -922,6 +950,7 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_array(
dbus_bool_t success = FALSE;
DBusMessageIter iter_array;
wpa_printf(MSG_MSGDUMP, "%s: array_type %c", __func__, array_type);
if (!entry)
return FALSE;
@ -941,6 +970,8 @@ static dbus_bool_t _wpa_dbus_dict_entry_get_array(
success = _wpa_dbus_dict_entry_get_binarray(&iter_array, entry);
break;
default:
wpa_printf(MSG_MSGDUMP, "%s: unsupported array type %c",
__func__, array_type);
break;
}
@ -955,42 +986,72 @@ static dbus_bool_t _wpa_dbus_dict_fill_value_from_variant(
switch (entry->type) {
case DBUS_TYPE_OBJECT_PATH:
dbus_message_iter_get_basic(iter, &v);
wpa_printf(MSG_MSGDUMP, "%s: object path value: %s",
__func__, v);
entry->str_value = os_strdup(v);
if (entry->str_value == NULL)
return FALSE;
break;
case DBUS_TYPE_STRING:
dbus_message_iter_get_basic(iter, &v);
wpa_printf(MSG_MSGDUMP, "%s: string value: %s",
__func__, wpa_debug_show_keys ? v : "[omitted]");
entry->str_value = os_strdup(v);
if (entry->str_value == NULL)
return FALSE;
break;
case DBUS_TYPE_BOOLEAN:
dbus_message_iter_get_basic(iter, &entry->bool_value);
wpa_printf(MSG_MSGDUMP, "%s: boolean value: %d",
__func__, entry->bool_value);
break;
case DBUS_TYPE_BYTE:
dbus_message_iter_get_basic(iter, &entry->byte_value);
wpa_printf(MSG_MSGDUMP, "%s: byte value: %d",
__func__, entry->byte_value);
break;
case DBUS_TYPE_INT16:
dbus_message_iter_get_basic(iter, &entry->int16_value);
wpa_printf(MSG_MSGDUMP, "%s: int16 value: %d",
__func__, entry->int16_value);
break;
case DBUS_TYPE_UINT16:
dbus_message_iter_get_basic(iter, &entry->uint16_value);
wpa_printf(MSG_MSGDUMP, "%s: uint16 value: %d",
__func__, entry->uint16_value);
break;
case DBUS_TYPE_INT32:
dbus_message_iter_get_basic(iter, &entry->int32_value);
wpa_printf(MSG_MSGDUMP, "%s: int32 value: %d",
__func__, entry->int32_value);
break;
case DBUS_TYPE_UINT32:
dbus_message_iter_get_basic(iter, &entry->uint32_value);
wpa_printf(MSG_MSGDUMP, "%s: uint32 value: %d",
__func__, entry->uint32_value);
break;
case DBUS_TYPE_INT64:
dbus_message_iter_get_basic(iter, &entry->int64_value);
wpa_printf(MSG_MSGDUMP, "%s: int64 value: %lld",
__func__, (long long int) entry->int64_value);
break;
case DBUS_TYPE_UINT64:
dbus_message_iter_get_basic(iter, &entry->uint64_value);
wpa_printf(MSG_MSGDUMP, "%s: uint64 value: %llu",
__func__,
(unsigned long long int) entry->uint64_value);
break;
case DBUS_TYPE_DOUBLE:
dbus_message_iter_get_basic(iter, &entry->double_value);
wpa_printf(MSG_MSGDUMP, "%s: double value: %f",
__func__, entry->double_value);
break;
case DBUS_TYPE_ARRAY:
return _wpa_dbus_dict_entry_get_array(iter, entry);
default:
wpa_printf(MSG_MSGDUMP, "%s: unsupported type %c",
__func__, entry->type);
return FALSE;
}
@ -1024,24 +1085,39 @@ dbus_bool_t wpa_dbus_dict_get_entry(DBusMessageIter *iter_dict,
if (!iter_dict || !entry)
goto error;
if (dbus_message_iter_get_arg_type(iter_dict) != DBUS_TYPE_DICT_ENTRY)
if (dbus_message_iter_get_arg_type(iter_dict) != DBUS_TYPE_DICT_ENTRY) {
wpa_printf(MSG_DEBUG, "%s: not a dict entry", __func__);
goto error;
}
dbus_message_iter_recurse(iter_dict, &iter_dict_entry);
dbus_message_iter_get_basic(&iter_dict_entry, &key);
wpa_printf(MSG_MSGDUMP, "%s: dict entry key: %s", __func__, key);
entry->key = key;
if (!dbus_message_iter_next(&iter_dict_entry))
if (!dbus_message_iter_next(&iter_dict_entry)) {
wpa_printf(MSG_DEBUG, "%s: no variant in dict entry", __func__);
goto error;
}
type = dbus_message_iter_get_arg_type(&iter_dict_entry);
if (type != DBUS_TYPE_VARIANT)
if (type != DBUS_TYPE_VARIANT) {
wpa_printf(MSG_DEBUG,
"%s: unexpected dict entry variant type: %c",
__func__, type);
goto error;
}
dbus_message_iter_recurse(&iter_dict_entry, &iter_dict_val);
entry->type = dbus_message_iter_get_arg_type(&iter_dict_val);
wpa_printf(MSG_MSGDUMP, "%s: dict entry variant content type: %c",
__func__, entry->type);
entry->array_type = DBUS_TYPE_INVALID;
if (!_wpa_dbus_dict_fill_value_from_variant(entry, &iter_dict_val))
if (!_wpa_dbus_dict_fill_value_from_variant(entry, &iter_dict_val)) {
wpa_printf(MSG_DEBUG,
"%s: failed to fetch dict values from variant",
__func__);
goto error;
}
dbus_message_iter_next(iter_dict);
return TRUE;