diff options
Diffstat (limited to 'dbus/dbus-message-builder.c')
| -rw-r--r-- | dbus/dbus-message-builder.c | 193 |
1 files changed, 177 insertions, 16 deletions
diff --git a/dbus/dbus-message-builder.c b/dbus/dbus-message-builder.c index 390dda75..c9dc8ca5 100644 --- a/dbus/dbus-message-builder.c +++ b/dbus/dbus-message-builder.c @@ -40,9 +40,12 @@ * @{ */ +/** + * Saved length + */ typedef struct { - DBusString name; + DBusString name; /**< Name of the length */ int start; /**< Calculate length since here */ int length; /**< length to write */ int offset; /**< where to write it into the data */ @@ -265,6 +268,73 @@ append_saved_length (DBusString *dest, return TRUE; } +static int +message_type_from_string (const DBusString *str, + int start) +{ + const char *s; + + s = _dbus_string_get_const_data_len (str, start, + _dbus_string_get_length (str) - start); + + if (strncmp (s, "method_call", strlen ("method_call")) == 0) + return DBUS_MESSAGE_TYPE_METHOD_CALL; + else if (strncmp (s, "method_return", strlen ("method_return")) == 0) + return DBUS_MESSAGE_TYPE_METHOD_RETURN; + else if (strncmp (s, "signal", strlen ("signal")) == 0) + return DBUS_MESSAGE_TYPE_SIGNAL; + else if (strncmp (s, "error", strlen ("error")) == 0) + return DBUS_MESSAGE_TYPE_ERROR; + else if (strncmp (s, "invalid", strlen ("invalid")) == 0) + return DBUS_MESSAGE_TYPE_INVALID; + else + return -1; +} + +static dbus_bool_t +append_string_field (DBusString *dest, + int endian, + int field, + int type, + const char *value) +{ + int len; + + if (!_dbus_string_append_byte (dest, field)) + { + _dbus_warn ("couldn't append field name byte\n"); + return FALSE; + } + + if (!_dbus_string_append_byte (dest, type)) + { + _dbus_warn ("could not append typecode byte\n"); + return FALSE; + } + + len = strlen (value); + + if (!_dbus_marshal_uint32 (dest, endian, len)) + { + _dbus_warn ("couldn't append string length\n"); + return FALSE; + } + + if (!_dbus_string_append (dest, value)) + { + _dbus_warn ("couldn't append field value\n"); + return FALSE; + } + + if (!_dbus_string_append_byte (dest, 0)) + { + _dbus_warn ("couldn't append string nul term\n"); + return FALSE; + } + + return TRUE; +} + /** * Reads the given filename, which should be in "message description * language" (look at some examples), and builds up the message data @@ -274,7 +344,8 @@ append_saved_length (DBusString *dest, * * The file format is: * @code - * VALID_HEADER normal header; byte order, padding, header len, body len, serial + * VALID_HEADER <type> normal header; byte order, type, padding, header len, body len, serial + * REQUIRED_FIELDS add required fields with placeholder values * BIG_ENDIAN switch to big endian * LITTLE_ENDIAN switch to little endian * OPPOSITE_ENDIAN switch to opposite endian @@ -286,7 +357,7 @@ append_saved_length (DBusString *dest, * (or if no START_LENGTH, absolute length) * LENGTH <name> inserts the saved length of the same name * CHOP <N> chops last N bytes off the data - * FIELD_NAME <abcd> inserts 4-byte field name + * HEADER_FIELD <fieldname> inserts a header field name byte * TYPE <typename> inserts a typecode byte * @endcode * @@ -299,6 +370,7 @@ append_saved_length (DBusString *dest, * UINT64 <N> marshals a UINT64 * DOUBLE <N> marshals a double * STRING 'Foo' marshals a string + * OBJECT_PATH '/foo/bar' marshals an object path * BYTE_ARRAY { 'a', 3, 4, 5, 6} marshals a BYTE array * BOOLEAN_ARRAY { false, true, false} marshals a BOOLEAN array * INT32_ARRAY { 3, 4, 5, 6} marshals an INT32 array @@ -386,6 +458,13 @@ _dbus_message_data_load (DBusString *dest, { int i; DBusString name; + int message_type; + + if (_dbus_string_get_length (&line) < (int) strlen ("VALID_HEADER ")) + { + _dbus_warn ("no args to VALID_HEADER\n"); + goto parse_failed; + } if (!_dbus_string_append_byte (dest, endian)) { @@ -393,8 +472,22 @@ _dbus_message_data_load (DBusString *dest, goto parse_failed; } + message_type = message_type_from_string (&line, + strlen ("VALID_HEADER ")); + if (message_type < 0) + { + _dbus_warn ("VALID_HEADER not followed by space then known message type\n"); + goto parse_failed; + } + + if (!_dbus_string_append_byte (dest, message_type)) + { + _dbus_warn ("could not append message type\n"); + goto parse_failed; + } + i = 0; - while (i < 3) + while (i < 2) { if (!_dbus_string_append_byte (dest, '\0')) { @@ -424,6 +517,25 @@ _dbus_message_data_load (DBusString *dest, } } else if (_dbus_string_starts_with_c_str (&line, + "REQUIRED_FIELDS")) + { + if (!append_string_field (dest, endian, + DBUS_HEADER_FIELD_INTERFACE, + DBUS_TYPE_STRING, + "org.freedesktop.BlahBlahInterface")) + goto parse_failed; + if (!append_string_field (dest, endian, + DBUS_HEADER_FIELD_MEMBER, + DBUS_TYPE_STRING, + "BlahBlahMethod")) + goto parse_failed; + if (!append_string_field (dest, endian, + DBUS_HEADER_FIELD_PATH, + DBUS_TYPE_OBJECT_PATH, + "/blah/blah/path")) + goto parse_failed; + } + else if (_dbus_string_starts_with_c_str (&line, "BIG_ENDIAN")) { endian = DBUS_BIG_ENDIAN; @@ -561,25 +673,42 @@ _dbus_message_data_load (DBusString *dest, PERFORM_UNALIGN (dest); } else if (_dbus_string_starts_with_c_str (&line, - "FIELD_NAME")) + "HEADER_FIELD")) { + int field; + _dbus_string_delete_first_word (&line); - if (_dbus_string_get_length (&line) != 4) + if (_dbus_string_starts_with_c_str (&line, "INVALID")) + field = DBUS_HEADER_FIELD_INVALID; + else if (_dbus_string_starts_with_c_str (&line, "PATH")) + field = DBUS_HEADER_FIELD_PATH; + else if (_dbus_string_starts_with_c_str (&line, "INTERFACE")) + field = DBUS_HEADER_FIELD_INTERFACE; + else if (_dbus_string_starts_with_c_str (&line, "MEMBER")) + field = DBUS_HEADER_FIELD_MEMBER; + else if (_dbus_string_starts_with_c_str (&line, "ERROR_NAME")) + field = DBUS_HEADER_FIELD_ERROR_NAME; + else if (_dbus_string_starts_with_c_str (&line, "REPLY_SERIAL")) + field = DBUS_HEADER_FIELD_REPLY_SERIAL; + else if (_dbus_string_starts_with_c_str (&line, "SERVICE")) + field = DBUS_HEADER_FIELD_SERVICE; + else if (_dbus_string_starts_with_c_str (&line, "SENDER_SERVICE")) + field = DBUS_HEADER_FIELD_SENDER_SERVICE; + else if (_dbus_string_starts_with_c_str (&line, "UNKNOWN")) + field = 22; /* random unknown header field */ + else { - _dbus_warn ("Field name must be four characters not \"%s\"\n", - _dbus_string_get_const_data (&line)); + _dbus_warn ("%s is not a valid header field name\n", + _dbus_string_get_const_data (&line)); goto parse_failed; } - if (unalign) - unalign = FALSE; - else - _dbus_string_align_length (dest, 4); - - if (!_dbus_string_copy (&line, 0, dest, - _dbus_string_get_length (dest))) - goto parse_failed; + if (!_dbus_string_append_byte (dest, field)) + { + _dbus_warn ("could not append header field name byte\n"); + goto parse_failed; + } } else if (_dbus_string_starts_with_c_str (&line, "TYPE")) @@ -604,6 +733,8 @@ _dbus_message_data_load (DBusString *dest, code = DBUS_TYPE_DOUBLE; else if (_dbus_string_starts_with_c_str (&line, "STRING")) code = DBUS_TYPE_STRING; + else if (_dbus_string_starts_with_c_str (&line, "OBJECT_PATH")) + code = DBUS_TYPE_OBJECT_PATH; else if (_dbus_string_starts_with_c_str (&line, "NAMED")) code = DBUS_TYPE_NAMED; else if (_dbus_string_starts_with_c_str (&line, "ARRAY")) @@ -1226,6 +1357,36 @@ _dbus_message_data_load (DBusString *dest, PERFORM_UNALIGN (dest); } + else if (_dbus_string_starts_with_c_str (&line, + "OBJECT_PATH")) + { + SAVE_FOR_UNALIGN (dest, 4); + int size_offset; + int old_len; + + _dbus_string_delete_first_word (&line); + + size_offset = _dbus_string_get_length (dest); + size_offset = _DBUS_ALIGN_VALUE (size_offset, 4); + if (!_dbus_marshal_uint32 (dest, endian, 0)) + { + _dbus_warn ("Failed to append string size\n"); + goto parse_failed; + } + + old_len = _dbus_string_get_length (dest); + if (!append_quoted_string (dest, &line, 0, NULL)) + { + _dbus_warn ("Failed to append quoted string\n"); + goto parse_failed; + } + + _dbus_marshal_set_uint32 (dest, endian, size_offset, + /* subtract 1 for nul */ + _dbus_string_get_length (dest) - old_len - 1); + + PERFORM_UNALIGN (dest); + } else goto parse_failed; |