functions to marshal/unmarshal data from the wire More...

Data Structures
struct	HeaderFieldType

struct	DBusTypeReaderClass
	Virtual table for a type reader. More...

struct	ReplacementBlock

Macros
#define	FIELDS_ARRAY_SIGNATURE_OFFSET 6
	Offset from start of _dbus_header_signature_str to the signature of the fields array. More...

#define	FIELDS_ARRAY_ELEMENT_SIGNATURE_OFFSET 7
	Offset from start of _dbus_header_signature_str to the signature of an element of the fields array. More...

#define	BYTE_ORDER_OFFSET 0
	Offset to byte order from start of header. More...

#define	TYPE_OFFSET 1
	Offset to type from start of header. More...

#define	FLAGS_OFFSET 2
	Offset to flags from start of header. More...

#define	VERSION_OFFSET 3
	Offset to version from start of header. More...

#define	BODY_LENGTH_OFFSET 4
	Offset to body length from start of header. More...

#define	SERIAL_OFFSET 8
	Offset to client serial from start of header. More...

#define	FIELDS_ARRAY_LENGTH_OFFSET 12
	Offset to fields array length from start of header. More...

#define	FIRST_FIELD_OFFSET 16
	Offset to first field in header. More...

#define	EXPECTED_TYPE_OF_FIELD(field) (_dbus_header_field_types[field].type)
	Macro to look up the correct type for a field. More...

#define	MAX_POSSIBLE_HEADER_PADDING 7
	The most padding we could ever need for a header. More...

#define	HEADER_END_BEFORE_PADDING(header) (_dbus_string_get_length (&(header)->data) - (header)->padding)
	Compute the end of the header, ignoring padding. More...

#define	RECURSIVE_MARSHAL_READ_TRACE 0
	turn this on to get deluged in TypeReader verbose spam More...

#define	RECURSIVE_MARSHAL_WRITE_TRACE 0
	turn this on to get deluged in TypeWriter verbose spam More...

#define	ARRAY_READER_LEN_POS(reader) ((reader)->u.array.start_pos - ((int)(reader)->array_len_offset) - 4)
	compute position of array length given array_len_offset, which is the offset back from start_pos to end of the len More...

#define	VALID_INITIAL_NAME_CHARACTER(c)
	Determine wether the given character is valid as the first character in a name. More...

#define	VALID_NAME_CHARACTER(c)
	Determine wether the given character is valid as a second or later character in a name. More...

#define	VALID_INITIAL_BUS_NAME_CHARACTER(c)
	Determine wether the given character is valid as the first character in a bus name. More...

#define	VALID_BUS_NAME_CHARACTER(c)
	Determine wether the given character is valid as a second or later character in a bus name. More...

#define	_dbus_validate_utf8(s, b, e) _dbus_string_validate_utf8 (s, b, e)

#define	DECLARE_DBUS_NAME_CHECK(what) dbus_bool_t _dbus_check_is_valid_##what (const char *name)
	A name check is used in _dbus_return_if_fail(), it's not suitable for validating untrusted data. More...

#define	DEFINE_DBUS_NAME_CHECK(what)
	Define a name check to be used in _dbus_return_if_fail() statements. More...

Enumerations
enum	{ MARSHAL_AS_STRING , MARSHAL_AS_SIGNATURE , MARSHAL_AS_BYTE_ARRAY }

enum	DBusValidationMode { DBUS_VALIDATION_MODE_WE_TRUST_THIS_DATA_ABSOLUTELY , DBUS_VALIDATION_MODE_DATA_IS_UNTRUSTED }
	This is used rather than a bool for high visibility. More...

enum	DBusValidity { DBUS_VALIDITY_UNKNOWN_OOM_ERROR = -4 , DBUS_INVALID_FOR_UNKNOWN_REASON = -3 , DBUS_VALID_BUT_INCOMPLETE = -2 , DBUS_VALIDITY_UNKNOWN = -1 , DBUS_VALID = 0 , DBUS_INVALID_UNKNOWN_TYPECODE = 1 , DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE = 2 , DBUS_INVALID_SIGNATURE_TOO_LONG = 3 , DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION = 4 , DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION = 5 , DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED = 6 , DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED = 7 , DBUS_INVALID_STRUCT_HAS_NO_FIELDS = 8 , DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL = 9 , DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE = 10 , DBUS_INVALID_NOT_ENOUGH_DATA = 11 , DBUS_INVALID_TOO_MUCH_DATA = 12 , DBUS_INVALID_BAD_BYTE_ORDER = 13 , DBUS_INVALID_BAD_PROTOCOL_VERSION = 14 , DBUS_INVALID_BAD_MESSAGE_TYPE = 15 , DBUS_INVALID_BAD_SERIAL = 16 , DBUS_INVALID_INSANE_FIELDS_ARRAY_LENGTH = 17 , DBUS_INVALID_INSANE_BODY_LENGTH = 18 , DBUS_INVALID_MESSAGE_TOO_LONG = 19 , DBUS_INVALID_HEADER_FIELD_CODE = 20 , DBUS_INVALID_HEADER_FIELD_HAS_WRONG_TYPE = 21 , DBUS_INVALID_USES_LOCAL_INTERFACE = 22 , DBUS_INVALID_USES_LOCAL_PATH = 23 , DBUS_INVALID_HEADER_FIELD_APPEARS_TWICE = 24 , DBUS_INVALID_BAD_DESTINATION = 25 , DBUS_INVALID_BAD_INTERFACE = 26 , DBUS_INVALID_BAD_MEMBER = 27 , DBUS_INVALID_BAD_ERROR_NAME = 28 , DBUS_INVALID_BAD_SENDER = 29 , DBUS_INVALID_MISSING_PATH = 30 , DBUS_INVALID_MISSING_INTERFACE = 31 , DBUS_INVALID_MISSING_MEMBER = 32 , DBUS_INVALID_MISSING_ERROR_NAME = 33 , DBUS_INVALID_MISSING_REPLY_SERIAL = 34 , DBUS_INVALID_LENGTH_OUT_OF_BOUNDS = 35 , DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM = 36 , DBUS_INVALID_BAD_PATH = 37 , DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS = 38 , DBUS_INVALID_BAD_UTF8_IN_STRING = 39 , DBUS_INVALID_ARRAY_LENGTH_INCORRECT = 40 , DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS = 41 , DBUS_INVALID_VARIANT_SIGNATURE_BAD = 42 , DBUS_INVALID_VARIANT_SIGNATURE_EMPTY = 43 , DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES = 44 , DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL = 45 , DBUS_INVALID_STRING_MISSING_NUL = 46 , DBUS_INVALID_SIGNATURE_MISSING_NUL = 47 , DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION = 48 , DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED = 49 , DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED = 50 , DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS = 51 , DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD = 52 , DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS = 53 , DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY = 54 , DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE = 55 , DBUS_INVALID_MISSING_UNIX_FDS = 56 , DBUS_INVALID_NESTED_TOO_DEEPLY = 57 , DBUS_VALIDITY_LAST }
	This is primarily used in unit testing, so we can verify that each invalid message is invalid for the expected reasons. More...

Functions
void	_dbus_pack_uint32 (dbus_uint32_t value, int byte_order, unsigned char *data)
	Packs a 32 bit unsigned integer into a data pointer. More...

dbus_uint16_t	_dbus_unpack_uint16 (int byte_order, const unsigned char *data)
	Unpacks a 16 bit unsigned integer from a data pointer. More...

dbus_uint32_t	_dbus_unpack_uint32 (int byte_order, const unsigned char *data)
	Unpacks a 32 bit unsigned integer from a data pointer. More...

void	_dbus_marshal_set_uint32 (DBusString *str, int pos, dbus_uint32_t value, int byte_order)
	Sets the 4 bytes at the given offset to a marshaled unsigned integer, replacing anything found there previously. More...

dbus_bool_t	_dbus_marshal_set_basic (DBusString str, int pos, int type, const void value, int byte_order, int old_end_pos, int new_end_pos)
	Sets an existing basic type value to a new value. More...

dbus_uint32_t	_dbus_marshal_read_uint32 (const DBusString str, int pos, int byte_order, int new_pos)
	Convenience function to demarshal a 32 bit unsigned integer. More...

void	_dbus_marshal_read_basic (const DBusString str, int pos, int type, void value, int byte_order, int *new_pos)
	Demarshals a basic-typed value. More...

dbus_bool_t	_dbus_marshal_write_basic (DBusString str, int insert_at, int type, const void value, int byte_order, int *pos_after)
	Marshals a basic-typed value. More...

void	_dbus_swap_array (unsigned char *data, int n_elements, int alignment)
	Swaps the elements of an array to the opposite byte order. More...

dbus_bool_t	_dbus_marshal_write_fixed_multi (DBusString str, int insert_at, int element_type, const void value, int n_elements, int byte_order, int *pos_after)
	Marshals a block of values of fixed-length type all at once, as an optimization. More...

void	_dbus_marshal_skip_basic (const DBusString str, int type, int byte_order, int pos)
	Skips over a basic-typed value, reporting the following position. More...

void	_dbus_marshal_skip_array (const DBusString str, int element_type, int byte_order, int pos)
	Skips an array, returning the next position. More...

int	_dbus_type_get_alignment (int typecode)
	Gets the alignment requirement for the given type; will be 1, 2, 4, or 8. More...

const char *	_dbus_type_to_string (int typecode)
	Returns a string describing the given type. More...

void	_dbus_verbose_bytes (const unsigned char *data, int len, int offset)
	If in verbose mode, print a block of binary data. More...

void	_dbus_verbose_bytes_of_string (const DBusString *str, int start, int len)
	Dump the given part of the string to verbose log. More...

int	_dbus_first_type_in_signature (const DBusString *str, int pos)
	Get the first type in the signature. More...

int	_dbus_first_type_in_signature_c_str (const char *str, int pos)
	Similar to _dbus_first_type_in_signature, but operates on a C string buffer. More...

void	_dbus_marshal_byteswap (const DBusString signature, int signature_start, int old_byte_order, int new_byte_order, DBusString value_str, int value_pos)
	Byteswaps the marshaled data in the given value_str. More...

	_DBUS_STRING_DEFINE_STATIC (_dbus_header_signature_str, DBUS_HEADER_SIGNATURE)
	Static DBusString containing the signature of a message header.

	_DBUS_STRING_DEFINE_STATIC (_dbus_local_interface_str, DBUS_INTERFACE_LOCAL)
	Static DBusString containing the local interface.

	_DBUS_STRING_DEFINE_STATIC (_dbus_local_path_str, DBUS_PATH_LOCAL)
	Static DBusString containing the local path.

char	_dbus_header_get_byte_order (const DBusHeader *header)
	Returns the header's byte order. More...

int	_dbus_header_get_message_type (DBusHeader *header)
	Gets the type of the message. More...

void	_dbus_header_set_serial (DBusHeader *header, dbus_uint32_t serial)
	Sets the serial number of a header. More...

dbus_uint32_t	_dbus_header_get_serial (DBusHeader *header)
	See dbus_message_get_serial() More...

void	_dbus_header_reinit (DBusHeader *header)
	Re-initializes a header that was previously initialized and never freed. More...

dbus_bool_t	_dbus_header_init (DBusHeader *header)
	Initializes a header, but doesn't prepare it for use; to make the header valid, you have to call _dbus_header_create(). More...

void	_dbus_header_free (DBusHeader *header)
	Frees a header. More...

dbus_bool_t	_dbus_header_copy (const DBusHeader header, DBusHeader dest)
	Initializes dest with a copy of the given header. More...

dbus_bool_t	_dbus_header_create (DBusHeader header, int byte_order, int message_type, const char destination, const char path, const char interface, const char member, const char error_name)
	Fills in the primary fields of the header, so the header is ready for use. More...

dbus_bool_t	_dbus_header_have_message_untrusted (int max_message_length, DBusValidity validity, int byte_order, int fields_array_len, int header_len, int body_len, const DBusString str, int start, int len)
	Given data long enough to contain the length of the message body and the fields array, check whether the data is long enough to contain the entire message (assuming the claimed lengths are accurate). More...

dbus_bool_t	_dbus_header_load (DBusHeader header, DBusValidationMode mode, DBusValidity validity, int byte_order, int fields_array_len, int header_len, int body_len, const DBusString *str)
	Creates a message header from potentially-untrusted data. More...

void	_dbus_header_update_lengths (DBusHeader *header, int body_len)
	Fills in the correct body length. More...

dbus_bool_t	_dbus_header_set_field_basic (DBusHeader header, int field, int type, const void value)
	Sets the value of a field with basic type. More...

dbus_bool_t	_dbus_header_get_field_basic (DBusHeader header, int field, int type, void value)
	Gets the value of a field with basic type. More...

dbus_bool_t	_dbus_header_get_field_raw (DBusHeader header, int field, const DBusString str, int pos)
	Gets the raw marshaled data for a field. More...

dbus_bool_t	_dbus_header_delete_field (DBusHeader *header, int field)
	Deletes a field, if it exists. More...

void	_dbus_header_toggle_flag (DBusHeader *header, dbus_uint32_t flag, dbus_bool_t value)
	Toggles a message flag bit, turning on the bit if value = TRUE and flipping it off if value = FALSE. More...

dbus_bool_t	_dbus_header_get_flag (DBusHeader *header, dbus_uint32_t flag)
	Gets a message flag bit, returning TRUE if the bit is set. More...

void	_dbus_header_byteswap (DBusHeader *header, int new_order)
	Swaps the header into the given order if required. More...

dbus_bool_t	_dbus_header_remove_unknown_fields (DBusHeader *header)
	Remove every header field not known to this version of dbus. More...

void	_dbus_type_signature_next (const char type_str, int type_pos)
	Skips to the next "complete" type inside a type signature. More...

void	_dbus_type_reader_init (DBusTypeReader reader, int byte_order, const DBusString type_str, int type_pos, const DBusString *value_str, int value_pos)
	Initializes a type reader. More...

void	_dbus_type_reader_init_types_only (DBusTypeReader reader, const DBusString type_str, int type_pos)
	Like _dbus_type_reader_init() but the iteration is over the signature, not over values. More...

int	_dbus_type_reader_get_current_type (const DBusTypeReader *reader)
	Gets the type of the value the reader is currently pointing to; or for a types-only reader gets the type it's currently pointing to. More...

int	_dbus_type_reader_get_element_type (const DBusTypeReader *reader)
	Gets the type of an element of the array the reader is currently pointing to. More...

int	_dbus_type_reader_get_value_pos (const DBusTypeReader *reader)
	Gets the current position in the value block. More...

void	_dbus_type_reader_read_raw (const DBusTypeReader reader, const unsigned char *value_location)
	Get the address of the marshaled value in the data being read. More...

void	_dbus_type_reader_read_basic (const DBusTypeReader reader, void value)
	Reads a basic-typed value, as with _dbus_marshal_read_basic(). More...

int	_dbus_type_reader_get_array_length (const DBusTypeReader *reader)
	Returns the number of bytes in the array. More...

void	_dbus_type_reader_read_fixed_multi (const DBusTypeReader reader, const void value, int n_elements)
	Reads a block of fixed-length basic values, from the current point in an array to the end of the array. More...

void	_dbus_type_reader_recurse (DBusTypeReader reader, DBusTypeReader sub)
	Initialize a new reader pointing to the first type and corresponding value that's a child of the current container. More...

dbus_bool_t	_dbus_type_reader_next (DBusTypeReader *reader)
	Skip to the next value on this "level". More...

dbus_bool_t	_dbus_type_reader_has_next (const DBusTypeReader *reader)
	Check whether there's another value on this "level". More...

void	_dbus_type_reader_get_signature (const DBusTypeReader reader, const DBusString str_p, int start_p, int *len_p)
	Gets the string and range of said string containing the signature of the current value. More...

dbus_bool_t	_dbus_type_reader_set_basic (DBusTypeReader reader, const void value, const DBusTypeReader *realign_root)
	Sets a new value for the basic type value pointed to by the reader, leaving the reader valid to continue reading. More...

dbus_bool_t	_dbus_type_reader_delete (DBusTypeReader reader, const DBusTypeReader realign_root)
	Recursively deletes any value pointed to by the reader, leaving the reader valid to continue reading. More...

void	_dbus_type_writer_init (DBusTypeWriter writer, int byte_order, DBusString type_str, int type_pos, DBusString *value_str, int value_pos)
	Initialize a write iterator, which is used to write out values in serialized D-Bus format. More...

void	_dbus_type_writer_init_types_delayed (DBusTypeWriter writer, int byte_order, DBusString value_str, int value_pos)
	Initialize a write iterator, with the signature to be provided later. More...

void	_dbus_type_writer_add_types (DBusTypeWriter writer, DBusString type_str, int type_pos)
	Adds type string to the writer, if it had none. More...

void	_dbus_type_writer_remove_types (DBusTypeWriter *writer)
	Removes type string from the writer. More...

void	_dbus_type_writer_init_values_only (DBusTypeWriter writer, int byte_order, const DBusString type_str, int type_pos, DBusString *value_str, int value_pos)
	Like _dbus_type_writer_init(), except the type string passed in should correspond to an existing signature that matches what you're going to write out. More...

dbus_bool_t	_dbus_type_writer_recurse (DBusTypeWriter writer, int container_type, const DBusString contained_type, int contained_type_start, DBusTypeWriter *sub)
	Opens a new container and writes out the initial information for that container. More...

dbus_bool_t	_dbus_type_writer_append_array (DBusTypeWriter writer, const DBusString contained_type, int contained_type_start, DBusTypeWriter *sub)
	Append to an existing array. More...

dbus_bool_t	_dbus_type_writer_unrecurse (DBusTypeWriter writer, DBusTypeWriter sub)
	Closes a container created by _dbus_type_writer_recurse() and writes any additional information to the values block. More...

dbus_bool_t	_dbus_type_writer_write_basic (DBusTypeWriter writer, int type, const void value)
	Writes out a basic type. More...

dbus_bool_t	_dbus_type_writer_write_fixed_multi (DBusTypeWriter writer, int element_type, const void value, int n_elements)
	Writes a block of fixed-length basic values, i.e. More...

dbus_bool_t	_dbus_type_writer_write_reader (DBusTypeWriter writer, DBusTypeReader reader)
	Iterate through all values in the given reader, writing a copy of each value to the writer. More...

DBusValidity	_dbus_validate_signature_with_reason (const DBusString *type_str, int type_pos, int len)
	Verifies that the range of type_str from type_pos to type_end is a valid signature. More...

DBusValidity	_dbus_validate_body_with_reason (const DBusString expected_signature, int expected_signature_start, int byte_order, int bytes_remaining, const DBusString *value_str, int value_pos, int len)
	Verifies that the range of value_str from value_pos to value_end is a legitimate value of type expected_signature. More...

dbus_bool_t	_dbus_validate_path (const DBusString *str, int start, int len)
	Checks that the given range of the string is a valid object path name in the D-Bus protocol. More...

const char *	_dbus_validity_to_error_message (DBusValidity validity)

dbus_bool_t	_dbus_validate_interface (const DBusString *str, int start, int len)
	Checks that the given range of the string is a valid interface name in the D-Bus protocol. More...

dbus_bool_t	_dbus_validate_member (const DBusString *str, int start, int len)
	Checks that the given range of the string is a valid member name in the D-Bus protocol. More...

dbus_bool_t	_dbus_validate_error_name (const DBusString *str, int start, int len)
	Checks that the given range of the string is a valid error name in the D-Bus protocol. More...

dbus_bool_t	_dbus_validate_bus_name (const DBusString *str, int start, int len)
	Checks that the given range of the string is a valid bus name in the D-Bus protocol. More...

dbus_bool_t	_dbus_validate_bus_namespace (const DBusString *str, int start, int len)
	Checks that the given range of the string is a prefix of a valid bus name in the D-Bus protocol. More...

	DECLARE_DBUS_NAME_CHECK (path)
	defines _dbus_check_is_valid_path()

	DECLARE_DBUS_NAME_CHECK (interface)
	defines _dbus_check_is_valid_interface()

	DECLARE_DBUS_NAME_CHECK (member)
	defines _dbus_check_is_valid_member()

	DECLARE_DBUS_NAME_CHECK (error_name)
	defines _dbus_check_is_valid_error_name()

	DECLARE_DBUS_NAME_CHECK (bus_name)
	defines _dbus_check_is_valid_bus_name()

	DECLARE_DBUS_NAME_CHECK (utf8)
	defines _dbus_check_is_valid_utf8()

Detailed Description

functions to marshal/unmarshal data from the wire

Types and functions related to converting primitive data types from wire format to native machine format, and vice versa.

A signature is just a string with multiple types one after the other. for example a type is "i" or "(ii)", a signature is "i(ii)" where i is int and (ii) is struct { int; int; }

Macro Definition Documentation

◆ _dbus_validate_utf8

#define _dbus_validate_utf8	(	s,
		b,
		e
	)	_dbus_string_validate_utf8 (s, b, e)

Definition at line 163 of file dbus-marshal-validate.h.

◆ ARRAY_READER_LEN_POS

#define ARRAY_READER_LEN_POS ( reader ) ((reader)->u.array.start_pos - ((int)(reader)->array_len_offset) - 4)

compute position of array length given array_len_offset, which is the offset back from start_pos to end of the len

Definition at line 216 of file dbus-marshal-recursive.c.

◆ BODY_LENGTH_OFFSET

#define BODY_LENGTH_OFFSET 4

Offset to body length from start of header.

Definition at line 63 of file dbus-marshal-header.c.

◆ BYTE_ORDER_OFFSET

#define BYTE_ORDER_OFFSET 0

Offset to byte order from start of header.

Definition at line 55 of file dbus-marshal-header.c.

◆ DECLARE_DBUS_NAME_CHECK

#define DECLARE_DBUS_NAME_CHECK ( what ) dbus_bool_t _dbus_check_is_valid_##what (const char *name)

A name check is used in _dbus_return_if_fail(), it's not suitable for validating untrusted data.

use _dbus_validate_whatever for that.

Definition at line 178 of file dbus-marshal-validate.h.

◆ DEFINE_DBUS_NAME_CHECK

#define DEFINE_DBUS_NAME_CHECK ( what )

Value:

dbus_bool_t                                                             \
_dbus_check_is_valid_##what (const char *name)                          \
{                                                                       \
  DBusString str;                                                       \
                                                                        \
  if (name == NULL)                                                     \
    return FALSE;                                                       \
                                                                        \
  _dbus_string_init_const (&str, name);                                 \
  return _dbus_validate_##what (&str, 0,                                \
                                _dbus_string_get_length (&str));        \
}

Define a name check to be used in _dbus_return_if_fail() statements.

Definition at line 183 of file dbus-marshal-validate.h.

◆ EXPECTED_TYPE_OF_FIELD

#define EXPECTED_TYPE_OF_FIELD ( field ) (_dbus_header_field_types[field].type)

Macro to look up the correct type for a field.

Definition at line 93 of file dbus-marshal-header.c.

◆ FIELDS_ARRAY_ELEMENT_SIGNATURE_OFFSET

#define FIELDS_ARRAY_ELEMENT_SIGNATURE_OFFSET 7

Offset from start of _dbus_header_signature_str to the signature of an element of the fields array.

Definition at line 51 of file dbus-marshal-header.c.

◆ FIELDS_ARRAY_LENGTH_OFFSET

#define FIELDS_ARRAY_LENGTH_OFFSET 12

Offset to fields array length from start of header.

Definition at line 67 of file dbus-marshal-header.c.

◆ FIELDS_ARRAY_SIGNATURE_OFFSET

#define FIELDS_ARRAY_SIGNATURE_OFFSET 6

Offset from start of _dbus_header_signature_str to the signature of the fields array.

Definition at line 49 of file dbus-marshal-header.c.

◆ FIRST_FIELD_OFFSET

#define FIRST_FIELD_OFFSET 16

Offset to first field in header.

Definition at line 69 of file dbus-marshal-header.c.

◆ FLAGS_OFFSET

#define FLAGS_OFFSET 2

Offset to flags from start of header.

Definition at line 59 of file dbus-marshal-header.c.

◆ HEADER_END_BEFORE_PADDING

#define HEADER_END_BEFORE_PADDING ( header ) (_dbus_string_get_length (&(header)->data) - (header)->padding)

Compute the end of the header, ignoring padding.

In the DBusHeader diagram, this is the distance from 0 to [B].

Definition at line 128 of file dbus-marshal-header.c.

◆ MAX_POSSIBLE_HEADER_PADDING

#define MAX_POSSIBLE_HEADER_PADDING 7

The most padding we could ever need for a header.

Definition at line 96 of file dbus-marshal-header.c.

◆ RECURSIVE_MARSHAL_READ_TRACE

#define RECURSIVE_MARSHAL_READ_TRACE 0

turn this on to get deluged in TypeReader verbose spam

Definition at line 50 of file dbus-marshal-recursive.c.

◆ RECURSIVE_MARSHAL_WRITE_TRACE

#define RECURSIVE_MARSHAL_WRITE_TRACE 0

turn this on to get deluged in TypeWriter verbose spam

Definition at line 53 of file dbus-marshal-recursive.c.

◆ SERIAL_OFFSET

#define SERIAL_OFFSET 8

Offset to client serial from start of header.

Definition at line 65 of file dbus-marshal-header.c.

◆ TYPE_OFFSET

#define TYPE_OFFSET 1

Offset to type from start of header.

Definition at line 57 of file dbus-marshal-header.c.

◆ VALID_BUS_NAME_CHARACTER

#define VALID_BUS_NAME_CHARACTER ( c )

Value:

  ( ((c) >= '0' && (c) <= '9') ||               \
    ((c) >= 'A' && (c) <= 'Z') ||               \
    ((c) >= 'a' && (c) <= 'z') ||               \
    ((c) == '_') || ((c) == '-'))

Determine wether the given character is valid as a second or later character in a bus name.

Definition at line 1145 of file dbus-marshal-validate.c.

◆ VALID_INITIAL_BUS_NAME_CHARACTER

#define VALID_INITIAL_BUS_NAME_CHARACTER ( c )

Value:

  ( ((c) >= 'A' && (c) <= 'Z') ||               \
    ((c) >= 'a' && (c) <= 'z') ||               \
    ((c) == '_') || ((c) == '-'))

Determine wether the given character is valid as the first character in a bus name.

Definition at line 1136 of file dbus-marshal-validate.c.

◆ VALID_INITIAL_NAME_CHARACTER

#define VALID_INITIAL_NAME_CHARACTER ( c )

Value:

  ( ((c) >= 'A' && (c) <= 'Z') ||               \
    ((c) >= 'a' && (c) <= 'z') ||               \
    ((c) == '_') )

Determine wether the given character is valid as the first character in a name.

Definition at line 817 of file dbus-marshal-validate.c.

◆ VALID_NAME_CHARACTER

#define VALID_NAME_CHARACTER ( c )

Value:

  ( ((c) >= '0' && (c) <= '9') ||               \
    ((c) >= 'A' && (c) <= 'Z') ||               \
    ((c) >= 'a' && (c) <= 'z') ||               \
    ((c) == '_') )

Determine wether the given character is valid as a second or later character in a name.

Definition at line 826 of file dbus-marshal-validate.c.

◆ VERSION_OFFSET

#define VERSION_OFFSET 3

Offset to version from start of header.

Definition at line 61 of file dbus-marshal-header.c.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Definition at line 698 of file dbus-marshal-basic.c.

◆ DBusValidationMode

enum DBusValidationMode

This is used rather than a bool for high visibility.

Definition at line 40 of file dbus-marshal-validate.h.

◆ DBusValidity

enum DBusValidity

This is primarily used in unit testing, so we can verify that each invalid message is invalid for the expected reasons.

Thus we really want a distinct enum value for every codepath leaving the validator functions. Enum values are specified manually for ease of debugging (so you can see the enum value given a printf)

Enumerator
DBUS_VALIDITY_UNKNOWN_OOM_ERROR	can't determine validity due to OOM
DBUS_VALID	the data is valid
DBUS_INVALID_TOO_MUCH_DATA	trailing junk makes it invalid

Definition at line 53 of file dbus-marshal-validate.h.

Function Documentation

◆ _dbus_first_type_in_signature()

int _dbus_first_type_in_signature	(	const DBusString *	str,
		int	pos
	)

Get the first type in the signature.

The difference between this and just getting the first byte of the signature is that you won't get DBUS_STRUCT_BEGIN_CHAR, you'll get DBUS_TYPE_STRUCT instead.

Parameters

str	string containing signature
pos	where the signature starts

Returns: the first type in the signature

Definition at line 1484 of file dbus-marshal-basic.c.

Referenced by _dbus_type_reader_get_current_type(), _dbus_type_reader_get_element_type(), and _dbus_type_reader_recurse().

◆ _dbus_first_type_in_signature_c_str()

int _dbus_first_type_in_signature_c_str	(	const char *	str,
		int	pos
	)

Similar to _dbus_first_type_in_signature, but operates on a C string buffer.

Parameters

str	a C string buffer
pos	where the signature starts

Returns: the first type in the signature

Definition at line 1499 of file dbus-marshal-basic.c.

Referenced by dbus_signature_iter_get_current_type(), and dbus_signature_iter_get_element_type().

◆ _dbus_header_byteswap()

void _dbus_header_byteswap	(	DBusHeader *	header,
		int	new_order
	)

Swaps the header into the given order if required.

Parameters

header	the header
new_order	the new byte order

Definition at line 1507 of file dbus-marshal-header.c.

References _dbus_header_get_byte_order(), _dbus_marshal_byteswap(), _dbus_string_set_byte(), BYTE_ORDER_OFFSET, and DBusHeader::data.

◆ _dbus_header_copy()

dbus_bool_t _dbus_header_copy	(	const DBusHeader *	header,
		DBusHeader *	dest
	)

Initializes dest with a copy of the given header.

Resets the message serial to 0 on the copy.

Parameters

header	header to copy
dest	destination for copy

Returns: FALSE if not enough memory

Definition at line 495 of file dbus-marshal-header.c.

References _dbus_header_set_serial(), _dbus_string_copy(), _dbus_string_free(), _dbus_string_get_length(), _dbus_string_init_preallocated(), DBusHeader::data, FALSE, and TRUE.

Referenced by dbus_message_copy().

◆ _dbus_header_create()

dbus_bool_t _dbus_header_create	(	DBusHeader *	header,
		int	byte_order,
		int	message_type,
		const char *	destination,
		const char *	path,
		const char *	interface,
		const char *	member,
		const char *	error_name
	)

Fills in the primary fields of the header, so the header is ready for use.

NULL may be specified for some or all of the fields to avoid adding those fields. Some combinations of fields don't make sense, and passing them in will trigger an assertion failure.

Parameters

header	the header
byte_order	byte order of the header
message_type	the message type
destination	destination field or NULL
path	path field or NULL
interface	interface field or NULL
member	member field or NULL
error_name	error name or NULL

Returns: FALSE if not enough memory

Definition at line 533 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_string_get_length(), DBusHeader::data, DBUS_BIG_ENDIAN, DBUS_LITTLE_ENDIAN, and DBUS_MESSAGE_TYPE_SIGNAL.

◆ _dbus_header_delete_field()

dbus_bool_t _dbus_header_delete_field	(	DBusHeader *	header,
		int	field
	)

Deletes a field, if it exists.

Parameters

header	the header
field	the field to delete

Returns: FALSE if no memory

Definition at line 1427 of file dbus-marshal-header.c.

◆ _dbus_header_free()

void _dbus_header_free ( DBusHeader * header )

Frees a header.

Parameters

header the header

Definition at line 481 of file dbus-marshal-header.c.

References _dbus_string_free(), and DBusHeader::data.

Referenced by dbus_message_copy().

◆ _dbus_header_get_byte_order()

char _dbus_header_get_byte_order ( const DBusHeader * header )

Returns the header's byte order.

Parameters

header the header

Returns: the byte order

Definition at line 179 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_string_get_byte(), _dbus_string_get_length(), BYTE_ORDER_OFFSET, and DBusHeader::data.

Referenced by _dbus_header_byteswap(), _dbus_header_get_serial(), _dbus_header_remove_unknown_fields(), _dbus_header_set_serial(), and _dbus_header_update_lengths().

◆ _dbus_header_get_field_basic()

dbus_bool_t _dbus_header_get_field_basic	(	DBusHeader *	header,
		int	field,
		int	type,
		void *	value
	)

Gets the value of a field with basic type.

If the field doesn't exist, returns FALSE, otherwise returns TRUE.

Parameters

header	the header
field	the field to get
type	the type of the value
value	the value as for _dbus_marshal_read_basic()

Returns: FALSE if the field doesn't exist

Definition at line 1362 of file dbus-marshal-header.c.

References _dbus_assert, DBUS_HEADER_FIELD_INVALID, and DBUS_HEADER_FIELD_LAST.

Referenced by dbus_message_get_container_instance(), dbus_message_get_destination(), dbus_message_get_error_name(), dbus_message_get_interface(), dbus_message_get_member(), dbus_message_get_path(), dbus_message_get_reply_serial(), and dbus_message_get_sender().

◆ _dbus_header_get_field_raw()

dbus_bool_t _dbus_header_get_field_raw	(	DBusHeader *	header,
		int	field,
		const DBusString **	str,
		int *	pos
	)

Gets the raw marshaled data for a field.

If the field doesn't exist, returns FALSE, otherwise returns TRUE. Returns the start of the marshaled data, i.e. usually the byte where the length starts (for strings and arrays) or for basic types just the value itself.

Parameters

header	the header
field	the field to get
str	return location for the data string
pos	return location for start of field value

Returns: FALSE if the field doesn't exist

Definition at line 1403 of file dbus-marshal-header.c.

◆ _dbus_header_get_flag()

dbus_bool_t _dbus_header_get_flag	(	DBusHeader *	header,
		dbus_uint32_t	flag
	)

Gets a message flag bit, returning TRUE if the bit is set.

Parameters

header	the header
flag	the message flag to get

Returns: TRUE if the flag is set

Definition at line 1490 of file dbus-marshal-header.c.

References DBusHeader::data, and FLAGS_OFFSET.

Referenced by dbus_message_get_allow_interactive_authorization(), dbus_message_get_auto_start(), and dbus_message_get_no_reply().

◆ _dbus_header_get_message_type()

int _dbus_header_get_message_type ( DBusHeader * header )

Gets the type of the message.

Parameters

header the header

Returns: the type

Definition at line 391 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_string_get_byte(), DBusHeader::data, DBUS_MESSAGE_TYPE_INVALID, and TYPE_OFFSET.

Referenced by dbus_message_get_type().

◆ _dbus_header_get_serial()

dbus_uint32_t _dbus_header_get_serial ( DBusHeader * header )

See dbus_message_get_serial()

Parameters

header the header

Returns: the client serial

Definition at line 432 of file dbus-marshal-header.c.

References _dbus_header_get_byte_order(), _dbus_marshal_read_uint32(), DBusHeader::data, NULL, and SERIAL_OFFSET.

Referenced by _dbus_header_set_serial(), and dbus_message_get_serial().

◆ _dbus_header_have_message_untrusted()

dbus_bool_t _dbus_header_have_message_untrusted	(	int	max_message_length,
		DBusValidity *	validity,
		int *	byte_order,
		int *	fields_array_len,
		int *	header_len,
		int *	body_len,
		const DBusString *	str,
		int	start,
		int	len
	)

Given data long enough to contain the length of the message body and the fields array, check whether the data is long enough to contain the entire message (assuming the claimed lengths are accurate).

Also checks that the lengths are in sanity parameters.

Parameters

max_message_length	maximum length of a valid message
validity	return location for why the data is invalid if it is
byte_order	return location for byte order
fields_array_len	return location for claimed fields array length
header_len	return location for claimed header length
body_len	return location for claimed body length
str	the data
start	start of data, 8-aligned
len	length of data

Returns: TRUE if the data is long enough for the claimed length, and the lengths were valid

Definition at line 681 of file dbus-marshal-header.c.

References _dbus_assert, _DBUS_INT32_MAX, _dbus_string_get_byte(), BYTE_ORDER_OFFSET, DBUS_BIG_ENDIAN, and DBUS_LITTLE_ENDIAN.

Referenced by _dbus_message_loader_queue_messages(), and dbus_message_demarshal_bytes_needed().

◆ _dbus_header_init()

dbus_bool_t _dbus_header_init ( DBusHeader * header )

Initializes a header, but doesn't prepare it for use; to make the header valid, you have to call _dbus_header_create().

Parameters

header header to initialize

Returns: FALSE if not enough memory

Definition at line 465 of file dbus-marshal-header.c.

References _dbus_header_reinit(), _dbus_string_init_preallocated(), DBusHeader::data, FALSE, and TRUE.

◆ _dbus_header_load()

dbus_bool_t _dbus_header_load	(	DBusHeader *	header,
		DBusValidationMode	mode,
		DBusValidity *	validity,
		int	byte_order,
		int	fields_array_len,
		int	header_len,
		int	body_len,
		const DBusString *	str
	)

Creates a message header from potentially-untrusted data.

The return value is TRUE if there was enough memory and the data was valid. If it returns TRUE, the header will be created. If it returns FALSE and *validity == DBUS_VALIDITY_UNKNOWN_OOM_ERROR, then there wasn't enough memory. If it returns FALSE and *validity != DBUS_VALIDITY_UNKNOWN_OOM_ERROR then the data was invalid.

The byte_order, fields_array_len, and body_len args should be from _dbus_header_have_message_untrusted(). Validation performed in _dbus_header_have_message_untrusted() is assumed to have been already done.

Parameters

header	the header (must be initialized)
mode	whether to do validation
validity	return location for invalidity reason
byte_order	byte order from header
fields_array_len	claimed length of fields array
body_len	claimed length of body
header_len	claimed length of header
str	a string starting with the header

Returns: FALSE if no memory or data was invalid, TRUE otherwise

Definition at line 981 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_string_copy_len(), _dbus_string_get_length(), DBusHeader::data, DBUS_VALIDITY_UNKNOWN_OOM_ERROR, and FALSE.

◆ _dbus_header_reinit()

void _dbus_header_reinit ( DBusHeader * header )

Re-initializes a header that was previously initialized and never freed.

After this, to make the header valid you have to call _dbus_header_create().

Parameters

header header to re-initialize

Definition at line 448 of file dbus-marshal-header.c.

References _dbus_string_set_length(), DBusHeader::data, and DBusHeader::padding.

Referenced by _dbus_header_init().

◆ _dbus_header_remove_unknown_fields()

dbus_bool_t _dbus_header_remove_unknown_fields ( DBusHeader * header )

Remove every header field not known to this version of dbus.

Parameters

header the header

Returns: FALSE if no memory

Definition at line 1532 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_header_get_byte_order(), _dbus_type_reader_get_current_type(), _dbus_type_reader_init(), _dbus_type_reader_read_basic(), _dbus_type_reader_recurse(), DBusHeader::data, DBUS_HEADER_FIELD_LAST, DBUS_TYPE_BYTE, DBUS_TYPE_INVALID, FIELDS_ARRAY_LENGTH_OFFSET, and FIELDS_ARRAY_SIGNATURE_OFFSET.

Referenced by _dbus_message_remove_unknown_fields().

◆ _dbus_header_set_field_basic()

dbus_bool_t _dbus_header_set_field_basic	(	DBusHeader *	header,
		int	field,
		int	type,
		const void *	value
	)

Sets the value of a field with basic type.

If the value is a string value, it isn't allowed to be NULL. If the field doesn't exist, it will be created.

Parameters

header	the header
field	the field to set
type	the type of the value
value	the value as for _dbus_marshal_set_basic()

Returns: FALSE if no memory

Definition at line 1284 of file dbus-marshal-header.c.

References _dbus_assert, and DBUS_HEADER_FIELD_LAST.

Referenced by dbus_message_set_reply_serial().

◆ _dbus_header_set_serial()

void _dbus_header_set_serial	(	DBusHeader *	header,
		dbus_uint32_t	serial
	)

Sets the serial number of a header.

This can only be done once on a header.

Parameters

header	the header
serial	the serial

Definition at line 409 of file dbus-marshal-header.c.

References _dbus_assert, _dbus_header_get_byte_order(), _dbus_header_get_serial(), _dbus_marshal_set_uint32(), DBusHeader::data, and SERIAL_OFFSET.

Referenced by _dbus_header_copy(), and dbus_message_set_serial().

◆ _dbus_header_toggle_flag()

void _dbus_header_toggle_flag	(	DBusHeader *	header,
		dbus_uint32_t	flag,
		dbus_bool_t	value
	)

Toggles a message flag bit, turning on the bit if value = TRUE and flipping it off if value = FALSE.

Parameters

header	the header
flag	the message flag to toggle
value	toggle on or off

Definition at line 1468 of file dbus-marshal-header.c.

References DBusHeader::data, and FLAGS_OFFSET.

Referenced by dbus_message_set_allow_interactive_authorization(), dbus_message_set_auto_start(), and dbus_message_set_no_reply().

◆ _dbus_header_update_lengths()

void _dbus_header_update_lengths	(	DBusHeader *	header,
		int	body_len
	)

Fills in the correct body length.

Parameters

header	the header
body_len	the length of the body

Definition at line 1207 of file dbus-marshal-header.c.

References _dbus_header_get_byte_order(), _dbus_marshal_set_uint32(), BODY_LENGTH_OFFSET, and DBusHeader::data.

Referenced by dbus_message_lock().

◆ _dbus_marshal_byteswap()

void _dbus_marshal_byteswap	(	const DBusString *	signature,
		int	signature_start,
		int	old_byte_order,
		int	new_byte_order,
		DBusString *	value_str,
		int	value_pos
	)

Byteswaps the marshaled data in the given value_str.

Parameters

signature	the types in the value_str
signature_start	where in signature is the signature
old_byte_order	the old byte order
new_byte_order	the new byte order
value_str	the string containing the body
value_pos	where the values start

Definition at line 224 of file dbus-marshal-byteswap.c.

References _dbus_assert, _dbus_string_get_length(), and _dbus_type_reader_init_types_only().

Referenced by _dbus_header_byteswap().

◆ _dbus_marshal_read_basic()

void _dbus_marshal_read_basic	(	const DBusString *	str,
		int	pos,
		int	type,
		void *	value,
		int	byte_order,
		int *	new_pos
	)

Demarshals a basic-typed value.

The "value" pointer is always the address of a variable of the basic type. So e.g. if the basic type is "double" then the pointer is a double*, and if it's "char*" then the pointer is a "char**".

A value of type DBusBasicValue is guaranteed to be large enough to hold any of the types that may be returned, which is handy if you are trying to do things generically. For example you can pass a DBusBasicValue* in to this function, and then pass the same DBusBasicValue* in to _dbus_marshal_basic_type() in order to move a value from one place to another.

Parameters

str	the string containing the data
pos	position in the string
type	type of value to demarshal
value	pointer to return value data
byte_order	the byte order
new_pos	pointer to update with new position, or NULL

Definition at line 514 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_assert_not_reached, _dbus_marshal_read_uint32(), _dbus_string_get_byte(), _dbus_string_get_const_data(), _dbus_type_to_string(), _dbus_warn_check_failed(), DBUS_TYPE_BOOLEAN, DBUS_TYPE_BYTE, DBUS_TYPE_DOUBLE, DBUS_TYPE_INT16, DBUS_TYPE_INT32, DBUS_TYPE_INT64, dbus_type_is_basic(), DBUS_TYPE_OBJECT_PATH, DBUS_TYPE_SIGNATURE, DBUS_TYPE_STRING, DBUS_TYPE_UINT16, DBUS_TYPE_UINT32, DBUS_TYPE_UINT64, DBUS_TYPE_UNIX_FD, and dbus_uint64_t.

Referenced by _dbus_type_reader_read_basic().

◆ _dbus_marshal_read_uint32()

dbus_uint32_t _dbus_marshal_read_uint32	(	const DBusString *	str,
		int	pos,
		int	byte_order,
		int *	new_pos
	)

Convenience function to demarshal a 32 bit unsigned integer.

Parameters

str	the string containing the data
byte_order	the byte order
pos	the position in the string
new_pos	the new position of the string

Returns: the demarshaled integer.

Definition at line 476 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_string_get_length(), and _dbus_unpack_uint32().

Referenced by _dbus_header_get_serial(), _dbus_marshal_read_basic(), _dbus_marshal_skip_array(), and _dbus_marshal_skip_basic().

◆ _dbus_marshal_set_basic()

dbus_bool_t _dbus_marshal_set_basic	(	DBusString *	str,
		int	pos,
		int	type,
		const void *	value,
		int	byte_order,
		int *	old_end_pos,
		int *	new_end_pos
	)

Sets an existing basic type value to a new value.

Arguments work the same way as _dbus_marshal_basic_type().

Parameters

str	the string
pos	location of the current value
type	the type of the current and new values
value	the address of the new value
byte_order	byte order for marshaling
old_end_pos	location to store end position of the old value, or NULL
new_end_pos	location to store end position of the new value, or NULL

Returns: FALSE if no memory

Definition at line 377 of file dbus-marshal-basic.c.

References _dbus_string_set_byte(), DBUS_TYPE_BYTE, DBUS_TYPE_INT16, DBUS_TYPE_UINT16, dbus_uint64_t, and TRUE.

◆ _dbus_marshal_set_uint32()

void _dbus_marshal_set_uint32	(	DBusString *	str,
		int	pos,
		dbus_uint32_t	value,
		int	byte_order
	)

Sets the 4 bytes at the given offset to a marshaled unsigned integer, replacing anything found there previously.

Parameters

str	the string to write the marshalled int to
pos	the byte offset where int should be written
value	the value
byte_order	the byte order to use

Definition at line 260 of file dbus-marshal-basic.c.

Referenced by _dbus_header_set_serial(), and _dbus_header_update_lengths().

◆ _dbus_marshal_skip_array()

void _dbus_marshal_skip_array	(	const DBusString *	str,
		int	element_type,
		int	byte_order,
		int *	pos
	)

Skips an array, returning the next position.

Parameters

str	the string containing the data
element_type	the type of array elements
byte_order	the byte order
pos	pointer to position in the string, updated on return to new position

Definition at line 1205 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_marshal_read_uint32(), _dbus_string_get_length(), and _dbus_type_get_alignment().

◆ _dbus_marshal_skip_basic()

void _dbus_marshal_skip_basic	(	const DBusString *	str,
		int	type,
		int	byte_order,
		int *	pos
	)

Skips over a basic-typed value, reporting the following position.

Parameters

str	the string containing the data
type	type of value to read
byte_order	the byte order
pos	pointer to position in the string, updated on return to new position

Definition at line 1130 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_assert_not_reached, _dbus_marshal_read_uint32(), _dbus_string_get_byte(), _dbus_string_get_length(), _dbus_type_to_string(), _dbus_warn(), DBUS_BIG_ENDIAN, DBUS_LITTLE_ENDIAN, DBUS_TYPE_BOOLEAN, DBUS_TYPE_BYTE, DBUS_TYPE_DOUBLE, DBUS_TYPE_INT16, DBUS_TYPE_INT32, DBUS_TYPE_INT64, DBUS_TYPE_OBJECT_PATH, DBUS_TYPE_SIGNATURE, DBUS_TYPE_STRING, DBUS_TYPE_UINT16, DBUS_TYPE_UINT32, DBUS_TYPE_UINT64, and DBUS_TYPE_UNIX_FD.

◆ _dbus_marshal_write_basic()

dbus_bool_t _dbus_marshal_write_basic	(	DBusString *	str,
		int	insert_at,
		int	type,
		const void *	value,
		int	byte_order,
		int *	pos_after
	)

Marshals a basic-typed value.

The "value" pointer is always the address of a variable containing the basic type value. So for example for int32 it will be dbus_int32_t*, and for string it will be const char**. This is for symmetry with _dbus_marshal_read_basic() and to have a simple consistent rule.

Parameters

str	string to marshal to
insert_at	where to insert the value
type	type of value
value	pointer to a variable containing the value
byte_order	byte order
pos_after	NULL or the position after the type

Returns: TRUE on success

Definition at line 817 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_string_insert_byte(), DBUS_TYPE_BYTE, DBUS_TYPE_INT16, dbus_type_is_basic(), DBUS_TYPE_UINT16, dbus_uint64_t, FALSE, and TRUE.

◆ _dbus_marshal_write_fixed_multi()

dbus_bool_t _dbus_marshal_write_fixed_multi	(	DBusString *	str,
		int	insert_at,
		int	element_type,
		const void *	value,
		int	n_elements,
		int	byte_order,
		int *	pos_after
	)

Marshals a block of values of fixed-length type all at once, as an optimization.

dbus_type_is_fixed() returns TRUE for fixed-length types, which are the basic types minus the string-like types.

The value argument should be the adddress of an array, so e.g. "const dbus_uint32_t**"

Parameters

str	string to marshal to
insert_at	where to insert the value
element_type	type of array elements
value	address of an array to marshal
n_elements	number of elements in the array
byte_order	byte order
pos_after	NULL or the position after the type

Returns: TRUE on success

Definition at line 1059 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_type_to_string(), DBUS_TYPE_BYTE, dbus_type_is_fixed(), and dbus_uint64_t.

◆ _dbus_pack_uint32()

void _dbus_pack_uint32	(	dbus_uint32_t	value,
		int	byte_order,
		unsigned char *	data
	)

Packs a 32 bit unsigned integer into a data pointer.

Parameters

value	the value
byte_order	the byte order to use
data	the data pointer

Definition at line 142 of file dbus-marshal-basic.c.

◆ _dbus_swap_array()

void _dbus_swap_array	(	unsigned char *	data,
		int	n_elements,
		int	alignment
	)

Swaps the elements of an array to the opposite byte order.

Parameters

data	start of array
n_elements	number of elements
alignment	size of each element

Definition at line 927 of file dbus-marshal-basic.c.

References _dbus_assert, and dbus_uint64_t.

◆ _dbus_type_get_alignment()

int _dbus_type_get_alignment ( int typecode )

Gets the alignment requirement for the given type; will be 1, 2, 4, or 8.

Parameters

typecode the type

Returns: alignment of 1, 2, 4, or 8

Definition at line 1244 of file dbus-marshal-basic.c.

References _dbus_assert_not_reached, DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, DBUS_TYPE_BYTE, DBUS_TYPE_DICT_ENTRY, DBUS_TYPE_DOUBLE, DBUS_TYPE_INT16, DBUS_TYPE_INT32, DBUS_TYPE_INT64, DBUS_TYPE_OBJECT_PATH, DBUS_TYPE_SIGNATURE, DBUS_TYPE_STRING, DBUS_TYPE_STRUCT, DBUS_TYPE_UINT16, DBUS_TYPE_UINT32, DBUS_TYPE_UINT64, DBUS_TYPE_UNIX_FD, and DBUS_TYPE_VARIANT.

Referenced by _dbus_marshal_skip_array(), and dbus_message_iter_get_element_count().

◆ _dbus_type_reader_delete()

dbus_bool_t _dbus_type_reader_delete	(	DBusTypeReader *	reader,
		const DBusTypeReader *	realign_root
	)

Recursively deletes any value pointed to by the reader, leaving the reader valid to continue reading.

Any other readers will be invalidated.

The provided realign_root is the reader to start from when realigning the data that follows the newly-set value. See _dbus_type_reader_set_basic() for more details on the realign_root paramter.

Parameters

reader	reader indicating where to delete a value
realign_root	realign from here

Returns: FALSE if not enough memory

Definition at line 1419 of file dbus-marshal-recursive.c.

References _dbus_assert, DBusTypeReader::klass, and NULL.

◆ _dbus_type_reader_get_array_length()

int _dbus_type_reader_get_array_length ( const DBusTypeReader * reader )

Returns the number of bytes in the array.

Parameters

reader the reader to read from

Returns: the number of bytes in the array

Definition at line 899 of file dbus-marshal-recursive.c.

References _dbus_assert, DBusTypeReader::klass, and DBusTypeReaderClass::types_only.

Referenced by dbus_message_iter_get_array_len(), and dbus_message_iter_get_element_count().

◆ _dbus_type_reader_get_current_type()

int _dbus_type_reader_get_current_type ( const DBusTypeReader * reader )

Gets the type of the value the reader is currently pointing to; or for a types-only reader gets the type it's currently pointing to.

If the reader is at the end of a block or end of a container such as an array, returns DBUS_TYPE_INVALID.

Parameters

reader the reader

Definition at line 785 of file dbus-marshal-recursive.c.

References _dbus_assert, _dbus_first_type_in_signature(), _dbus_type_to_string(), DBusTypeReaderClass::check_finished, DBUS_DICT_ENTRY_BEGIN_CHAR, DBUS_DICT_ENTRY_END_CHAR, DBUS_STRUCT_BEGIN_CHAR, DBUS_STRUCT_END_CHAR, DBUS_TYPE_INVALID, DBusTypeReader::finished, DBusTypeReader::klass, DBusTypeReader::type_pos, and DBusTypeReader::type_str.

Referenced by _dbus_header_remove_unknown_fields(), _dbus_message_iter_get_args_valist(), _dbus_type_reader_get_element_type(), _dbus_type_reader_next(), _dbus_type_reader_read_basic(), _dbus_type_reader_set_basic(), dbus_message_iter_get_element_count(), and dbus_message_iter_get_fixed_array().

◆ _dbus_type_reader_get_element_type()

int _dbus_type_reader_get_element_type ( const DBusTypeReader * reader )

Gets the type of an element of the array the reader is currently pointing to.

It's an error to call this if _dbus_type_reader_get_current_type() doesn't return DBUS_TYPE_ARRAY for this reader.

Parameters

reader the reader

Definition at line 820 of file dbus-marshal-recursive.c.

References _dbus_assert, _dbus_first_type_in_signature(), _dbus_type_reader_get_current_type(), DBUS_TYPE_ARRAY, DBusTypeReader::type_pos, and DBusTypeReader::type_str.

Referenced by _dbus_message_iter_get_args_valist(), and dbus_message_iter_get_element_count().

◆ _dbus_type_reader_get_signature()

void _dbus_type_reader_get_signature	(	const DBusTypeReader *	reader,
		const DBusString **	str_p,
		int *	start_p,
		int *	len_p
	)

Gets the string and range of said string containing the signature of the current value.

Essentially a more complete version of _dbus_type_reader_get_current_type() (returns the full type rather than only the outside of the onion).

Note though that the first byte in a struct signature is DBUS_STRUCT_BEGIN_CHAR while the current type will be DBUS_TYPE_STRUCT so it isn't true that the first byte of the signature is always the same as the current type. Another difference is that this function will still return a signature when inside an empty array; say you recurse into empty array of int32, the signature is "i" but the current type will always be DBUS_TYPE_INVALID since there are no elements to be currently pointing to.

Parameters

reader	the reader
str_p	place to return the string with the type in it
start_p	place to return start of the type
len_p	place to return the length of the type

Definition at line 1124 of file dbus-marshal-recursive.c.

References DBusTypeReader::type_pos, and DBusTypeReader::type_str.

Referenced by dbus_message_iter_get_signature().

◆ _dbus_type_reader_get_value_pos()

int _dbus_type_reader_get_value_pos ( const DBusTypeReader * reader )

Gets the current position in the value block.

Parameters

reader the reader

Definition at line 837 of file dbus-marshal-recursive.c.

References DBusTypeReader::value_pos.

◆ _dbus_type_reader_has_next()

dbus_bool_t _dbus_type_reader_has_next ( const DBusTypeReader * reader )

Check whether there's another value on this "level".

e.g. the next field in a struct, the next value in an array. Returns FALSE at the end of the current container.

You probably don't want to use this; it makes for an awkward for/while loop. A nicer one is "while ((current_type = get_current_type()) != INVALID)"

Parameters

reader the reader

Returns: FALSE if nothing more to read at or below this level

Definition at line 1093 of file dbus-marshal-recursive.c.

◆ _dbus_type_reader_init()

void _dbus_type_reader_init	(	DBusTypeReader *	reader,
		int	byte_order,
		const DBusString *	type_str,
		int	type_pos,
		const DBusString *	value_str,
		int	value_pos
	)

Initializes a type reader.

Parameters

reader	the reader
byte_order	the byte order of the block to read
type_str	the signature of the block to read
type_pos	location of signature
value_str	the string containing values block
value_pos	start of values block

Definition at line 732 of file dbus-marshal-recursive.c.

Referenced by _dbus_header_remove_unknown_fields().

◆ _dbus_type_reader_init_types_only()

void _dbus_type_reader_init_types_only	(	DBusTypeReader *	reader,
		const DBusString *	type_str,
		int	type_pos
	)

Like _dbus_type_reader_init() but the iteration is over the signature, not over values.

Parameters

reader	the reader
type_str	the signature string
type_pos	location in the signature string

Definition at line 760 of file dbus-marshal-recursive.c.

Referenced by _dbus_marshal_byteswap(), and _dbus_validate_body_with_reason().

◆ _dbus_type_reader_next()

dbus_bool_t _dbus_type_reader_next ( DBusTypeReader * reader )

Skip to the next value on this "level".

e.g. the next field in a struct, the next value in an array. Returns FALSE at the end of the current container.

Parameters

reader the reader

Returns: FALSE if nothing more to read at or below this level

Definition at line 1053 of file dbus-marshal-recursive.c.

References _dbus_string_get_const_data_len(), _dbus_type_reader_get_current_type(), _dbus_type_to_string(), DBUS_TYPE_INVALID, FALSE, DBusTypeReader::klass, DBusTypeReaderClass::next, DBusTypeReader::type_pos, DBusTypeReader::type_str, and DBusTypeReader::value_pos.

Referenced by _dbus_message_iter_get_args_valist(), and dbus_message_iter_get_element_count().

◆ _dbus_type_reader_read_basic()

void _dbus_type_reader_read_basic	(	const DBusTypeReader *	reader,
		void *	value
	)

Reads a basic-typed value, as with _dbus_marshal_read_basic().

Parameters

reader	the reader
value	the address of the value

Definition at line 869 of file dbus-marshal-recursive.c.

References _dbus_assert, _dbus_marshal_read_basic(), _dbus_string_get_const_data_len(), _dbus_type_reader_get_current_type(), DBusTypeReader::byte_order, DBusTypeReader::klass, NULL, DBusTypeReader::type_pos, DBusTypeReader::type_str, DBusTypeReaderClass::types_only, DBusTypeReader::value_pos, and DBusTypeReader::value_str.

Referenced by _dbus_header_remove_unknown_fields(), _dbus_message_iter_get_args_valist(), and dbus_message_iter_get_basic().

◆ _dbus_type_reader_read_fixed_multi()

void _dbus_type_reader_read_fixed_multi	(	const DBusTypeReader *	reader,
		const void **	value,
		int *	n_elements
	)

Reads a block of fixed-length basic values, from the current point in an array to the end of the array.

Does not work for arrays of string or container types.

This function returns the array in-place; it does not make a copy, and it does not swap the bytes.

If you ask for DBUS_TYPE_DOUBLE you will get a "const double*" back and the "value" argument should be a "const double**" and so on.

Parameters

reader	the reader to read from
value	place to return the array values
n_elements	place to return number of array elements

Definition at line 923 of file dbus-marshal-recursive.c.

References _dbus_assert, DBusTypeReader::klass, and DBusTypeReaderClass::types_only.

Referenced by _dbus_message_iter_get_args_valist(), and dbus_message_iter_get_fixed_array().

◆ _dbus_type_reader_read_raw()

void _dbus_type_reader_read_raw	(	const DBusTypeReader *	reader,
		const unsigned char **	value_location
	)

Get the address of the marshaled value in the data being read.

The address may not be aligned; you have to align it to the type of the value you want to read. Most of the demarshal routines do this for you.

Parameters

reader	the reader
value_location	the address of the marshaled value

Definition at line 852 of file dbus-marshal-recursive.c.

References _dbus_assert, DBusTypeReader::klass, DBusTypeReaderClass::types_only, DBusTypeReader::value_pos, and DBusTypeReader::value_str.

◆ _dbus_type_reader_recurse()

void _dbus_type_reader_recurse	(	DBusTypeReader *	reader,
		DBusTypeReader *	sub
	)

Initialize a new reader pointing to the first type and corresponding value that's a child of the current container.

It's an error to call this if the current type is a non-container.

Note that DBusTypeReader traverses values, not types. So if you have an empty array of array of int, you can't recurse into it. You can only recurse into each element.

Parameters

reader	the reader
sub	a reader to init pointing to the first child

Definition at line 987 of file dbus-marshal-recursive.c.

References _dbus_first_type_in_signature(), DBUS_TYPE_STRUCT, DBusTypeReader::klass, NULL, DBusTypeReader::type_pos, DBusTypeReader::type_str, and DBusTypeReaderClass::types_only.

Referenced by _dbus_header_remove_unknown_fields(), _dbus_message_iter_get_args_valist(), dbus_message_iter_get_element_count(), and dbus_message_iter_recurse().

◆ _dbus_type_reader_set_basic()

dbus_bool_t _dbus_type_reader_set_basic	(	DBusTypeReader *	reader,
		const void *	value,
		const DBusTypeReader *	realign_root
	)

Sets a new value for the basic type value pointed to by the reader, leaving the reader valid to continue reading.

Any other readers will be invalidated if you set a variable-length type such as a string.

The provided realign_root is the reader to start from when realigning the data that follows the newly-set value. The reader parameter must point to a value below the realign_root parameter. If the type being set is fixed-length, then realign_root may be NULL. Only values reachable from realign_root will be realigned, so if your string contains other values you will need to deal with those somehow yourself. It is OK if realign_root is the same reader as the reader parameter, though if you aren't setting the root it may not be such a good idea.

Parameters

reader	reader indicating where to set a new value
value	address of the value to set
realign_root	realign from here

Returns: FALSE if not enough memory

Definition at line 1362 of file dbus-marshal-recursive.c.

References _dbus_assert, _dbus_string_get_const_data_len(), _dbus_string_get_length(), _dbus_type_reader_get_current_type(), _dbus_type_to_string(), _dbus_verbose_bytes_of_string(), dbus_type_is_basic(), dbus_type_is_fixed(), DBusTypeReader::klass, DBusTypeReader::type_pos, DBusTypeReader::type_str, DBusTypeReaderClass::types_only, DBusTypeReader::value_pos, and DBusTypeReader::value_str.

◆ _dbus_type_signature_next()

void _dbus_type_signature_next	(	const char *	type_str,
		int *	type_pos
	)

Skips to the next "complete" type inside a type signature.

The signature is read starting at type_pos, and the next type position is stored in the same variable.

Parameters

type_str	a type signature (must be valid)
type_pos	an integer position in the type signature (in and out)

Definition at line 340 of file dbus-marshal-recursive.c.

References _dbus_assert, DBUS_DICT_ENTRY_BEGIN_CHAR, DBUS_DICT_ENTRY_END_CHAR, DBUS_STRUCT_BEGIN_CHAR, DBUS_STRUCT_END_CHAR, DBUS_TYPE_ARRAY, DBUS_TYPE_INVALID, NULL, and TRUE.

Referenced by dbus_signature_iter_get_signature(), and dbus_signature_iter_next().

◆ _dbus_type_to_string()

const char * _dbus_type_to_string ( int typecode )

Returns a string describing the given type.

Parameters

typecode the type to describe

Returns: a constant string describing the type

Definition at line 1290 of file dbus-marshal-basic.c.

References DBUS_DICT_ENTRY_BEGIN_CHAR, DBUS_DICT_ENTRY_END_CHAR, DBUS_STRUCT_BEGIN_CHAR, DBUS_STRUCT_END_CHAR, DBUS_TYPE_ARRAY, DBUS_TYPE_BOOLEAN, DBUS_TYPE_BYTE, DBUS_TYPE_DICT_ENTRY, DBUS_TYPE_DOUBLE, DBUS_TYPE_INT16, DBUS_TYPE_INT32, DBUS_TYPE_INT64, DBUS_TYPE_INVALID, DBUS_TYPE_OBJECT_PATH, DBUS_TYPE_SIGNATURE, DBUS_TYPE_STRING, DBUS_TYPE_STRUCT, DBUS_TYPE_UINT16, DBUS_TYPE_UINT32, DBUS_TYPE_UINT64, DBUS_TYPE_UNIX_FD, and DBUS_TYPE_VARIANT.

Referenced by _dbus_marshal_read_basic(), _dbus_marshal_skip_basic(), _dbus_marshal_write_fixed_multi(), _dbus_message_iter_get_args_valist(), _dbus_type_reader_get_current_type(), _dbus_type_reader_next(), _dbus_type_reader_set_basic(), _dbus_type_writer_unrecurse(), and dbus_message_append_args_valist().

◆ _dbus_type_writer_add_types()

void _dbus_type_writer_add_types	(	DBusTypeWriter *	writer,
		DBusString *	type_str,
		int	type_pos
	)

Adds type string to the writer, if it had none.

Parameters

writer	the writer to init
type_str	type string to add
type_pos	type position

Definition at line 1545 of file dbus-marshal-recursive.c.

References NULL, DBusTypeWriter::type_pos, and DBusTypeWriter::type_str.

◆ _dbus_type_writer_append_array()

dbus_bool_t _dbus_type_writer_append_array	(	DBusTypeWriter *	writer,
		const DBusString *	contained_type,
		int	contained_type_start,
		DBusTypeWriter *	sub
	)

Append to an existing array.

Essentially, the writer will read an existing length at the write location; jump over that length; and write new fields. On unrecurse(), the existing length will be updated.

Parameters

writer	the writer
contained_type	element type
contained_type_start	position of element type
sub	the subwriter to init

Returns: FALSE if no memory

Definition at line 2142 of file dbus-marshal-recursive.c.

◆ _dbus_type_writer_init()

void _dbus_type_writer_init	(	DBusTypeWriter *	writer,
		int	byte_order,
		DBusString *	type_str,
		int	type_pos,
		DBusString *	value_str,
		int	value_pos
	)

Initialize a write iterator, which is used to write out values in serialized D-Bus format.

The type_pos passed in is expected to be inside an already-valid, though potentially empty, type signature. This means that the byte after type_pos must be either DBUS_TYPE_INVALID (aka nul) or some other valid type. DBusTypeWriter won't enforce that the signature is already valid (you can append the nul byte at the end if you like), but just be aware that you need the nul byte eventually and DBusTypeWriter isn't going to write it for you.

Parameters

writer	the writer to init
byte_order	the byte order to marshal into
type_str	the string to write typecodes into
type_pos	where to insert typecodes
value_str	the string to write values into
value_pos	where to insert values

Definition at line 1492 of file dbus-marshal-recursive.c.

References _dbus_string_get_const_data_len(), DBusTypeWriter::byte_order, DBusTypeWriter::container_type, DBUS_TYPE_INVALID, DBusTypeWriter::enabled, FALSE, TRUE, DBusTypeWriter::type_pos, DBusTypeWriter::type_pos_is_expectation, DBusTypeWriter::type_str, DBusTypeWriter::value_pos, and DBusTypeWriter::value_str.

Referenced by _dbus_type_writer_init_types_delayed(), and _dbus_type_writer_init_values_only().

◆ _dbus_type_writer_init_types_delayed()

void _dbus_type_writer_init_types_delayed	(	DBusTypeWriter *	writer,
		int	byte_order,
		DBusString *	value_str,
		int	value_pos
	)

Initialize a write iterator, with the signature to be provided later.

Parameters

writer	the writer to init
byte_order	the byte order to marshal into
value_str	the string to write values into
value_pos	where to insert values

Definition at line 1527 of file dbus-marshal-recursive.c.

References _dbus_type_writer_init(), and NULL.

◆ _dbus_type_writer_init_values_only()

void _dbus_type_writer_init_values_only	(	DBusTypeWriter *	writer,
		int	byte_order,
		const DBusString *	type_str,
		int	type_pos,
		DBusString *	value_str,
		int	value_pos
	)

Like _dbus_type_writer_init(), except the type string passed in should correspond to an existing signature that matches what you're going to write out.

The writer will check what you write vs. this existing signature.

Parameters

writer	the writer to init
byte_order	the byte order to marshal into
type_str	the string with signature
type_pos	start of signature
value_str	the string to write values into
value_pos	where to insert values

Definition at line 1583 of file dbus-marshal-recursive.c.

References _dbus_type_writer_init(), TRUE, and DBusTypeWriter::type_pos_is_expectation.

◆ _dbus_type_writer_recurse()

dbus_bool_t _dbus_type_writer_recurse	(	DBusTypeWriter *	writer,
		int	container_type,
		const DBusString *	contained_type,
		int	contained_type_start,
		DBusTypeWriter *	sub
	)

Opens a new container and writes out the initial information for that container.

Parameters

writer	the writer
container_type	the type of the container to open
contained_type	the array element type or variant content type
contained_type_start	position to look for the type
sub	the new sub-writer to write container contents

Returns: FALSE if no memory

Definition at line 2108 of file dbus-marshal-recursive.c.

◆ _dbus_type_writer_remove_types()

void _dbus_type_writer_remove_types ( DBusTypeWriter * writer )

Removes type string from the writer.

Parameters

writer the writer to remove from

Definition at line 1562 of file dbus-marshal-recursive.c.

References NULL, DBusTypeWriter::type_pos, and DBusTypeWriter::type_str.

◆ _dbus_type_writer_unrecurse()

dbus_bool_t _dbus_type_writer_unrecurse	(	DBusTypeWriter *	writer,
		DBusTypeWriter *	sub
	)

Closes a container created by _dbus_type_writer_recurse() and writes any additional information to the values block.

Parameters

writer	the writer
sub	the sub-writer created by _dbus_type_writer_recurse()

Returns: FALSE if no memory

Definition at line 2178 of file dbus-marshal-recursive.c.

References _dbus_assert, _dbus_type_to_string(), DBusTypeWriter::container_type, DBUS_TYPE_STRUCT, DBusTypeWriter::type_pos, DBusTypeWriter::type_pos_is_expectation, and DBusTypeWriter::value_pos.

◆ _dbus_type_writer_write_basic()

dbus_bool_t _dbus_type_writer_write_basic	(	DBusTypeWriter *	writer,
		int	type,
		const void *	value
	)

Writes out a basic type.

Parameters

writer	the writer
type	the type to write
value	the address of the value to write

Returns: FALSE if no memory

Definition at line 2310 of file dbus-marshal-recursive.c.

References _dbus_string_alloc_space(), FALSE, NULL, DBusTypeWriter::type_pos_is_expectation, and DBusTypeWriter::type_str.

◆ _dbus_type_writer_write_fixed_multi()

dbus_bool_t _dbus_type_writer_write_fixed_multi	(	DBusTypeWriter *	writer,
		int	element_type,
		const void *	value,
		int	n_elements
	)

Writes a block of fixed-length basic values, i.e.

those that are both dbus_type_is_fixed() and _dbus_type_is_basic(). The block must be written inside an array.

The value parameter should be the address of said array of values, so e.g. if it's an array of double, pass in "const double**"

Parameters

writer	the writer
element_type	type of stuff in the array
value	address of the array
n_elements	number of elements in the array

Returns: FALSE if no memory

Definition at line 2358 of file dbus-marshal-recursive.c.

References _dbus_assert, DBusTypeWriter::container_type, DBUS_TYPE_ARRAY, dbus_type_is_fixed(), DBusTypeWriter::type_pos, DBusTypeWriter::type_pos_is_expectation, and DBusTypeWriter::value_pos.

◆ _dbus_type_writer_write_reader()

dbus_bool_t _dbus_type_writer_write_reader	(	DBusTypeWriter *	writer,
		DBusTypeReader *	reader
	)

Iterate through all values in the given reader, writing a copy of each value to the writer.

The reader will be moved forward to its end position.

Parameters

writer	the writer to copy to
reader	the reader to copy from

Returns: FALSE if no memory

Definition at line 2730 of file dbus-marshal-recursive.c.

◆ _dbus_unpack_uint16()

dbus_uint16_t _dbus_unpack_uint16	(	int	byte_order,
		const unsigned char *	data
	)

Unpacks a 16 bit unsigned integer from a data pointer.

Parameters

byte_order	The byte order to use
data	the data pointer

Returns: the integer

Definition at line 168 of file dbus-marshal-basic.c.

References _dbus_assert, and DBUS_LITTLE_ENDIAN.

◆ _dbus_unpack_uint32()

dbus_uint32_t _dbus_unpack_uint32	(	int	byte_order,
		const unsigned char *	data
	)

Unpacks a 32 bit unsigned integer from a data pointer.

Parameters

byte_order	The byte order to use
data	the data pointer

Returns: the integer

Definition at line 189 of file dbus-marshal-basic.c.

References _dbus_assert, and DBUS_LITTLE_ENDIAN.

Referenced by _dbus_marshal_read_uint32(), and _dbus_verbose_bytes().

◆ _dbus_validate_body_with_reason()

DBUS_PRIVATE_EXPORT DBusValidity _dbus_validate_body_with_reason	(	const DBusString *	expected_signature,
		int	expected_signature_start,
		int	byte_order,
		int *	bytes_remaining,
		const DBusString *	value_str,
		int	value_pos,
		int	len
	)

Verifies that the range of value_str from value_pos to value_end is a legitimate value of type expected_signature.

If this function returns TRUE, it will be safe to iterate over the values with DBusTypeReader. The signature is assumed to be already valid.

If bytes_remaining is not NULL, then leftover bytes will be stored there and DBUS_VALID returned. If it is NULL, then DBUS_INVALID_TOO_MUCH_DATA will be returned if bytes are left over.

Parameters

expected_signature	the expected types in the value_str
expected_signature_start	where in expected_signature is the signature
byte_order	the byte order
bytes_remaining	place to store leftover bytes
value_str	the string containing the body
value_pos	where the values start
len	length of values after value_pos

Returns: DBUS_VALID if valid, reason why invalid otherwise

Definition at line 767 of file dbus-marshal-validate.c.

References _dbus_assert, _dbus_string_get_const_data_len(), _dbus_string_get_length(), and _dbus_type_reader_init_types_only().

◆ _dbus_validate_bus_name()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_bus_name	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a valid bus name in the D-Bus protocol.

This includes a length restriction, etc., see the specification.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 1253 of file dbus-marshal-validate.c.

Referenced by dbus_validate_bus_name().

◆ _dbus_validate_bus_namespace()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_bus_namespace	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a prefix of a valid bus name in the D-Bus protocol.

Unlike _dbus_validate_bus_name(), this accepts strings with only one period-separated component.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 1274 of file dbus-marshal-validate.c.

◆ _dbus_validate_error_name()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_error_name	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a valid error name in the D-Bus protocol.

This includes a length restriction, etc., see the specification.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 1124 of file dbus-marshal-validate.c.

References _dbus_validate_interface().

Referenced by dbus_validate_error_name().

◆ _dbus_validate_interface()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_interface	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a valid interface name in the D-Bus protocol.

This includes a length restriction and an ASCII subset, see the specification.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 987 of file dbus-marshal-validate.c.

References _dbus_assert, _dbus_string_get_length(), DBUS_MAXIMUM_NAME_LENGTH, FALSE, NULL, TRUE, VALID_INITIAL_NAME_CHARACTER, and VALID_NAME_CHARACTER.

Referenced by _dbus_validate_error_name(), and dbus_validate_interface().

◆ _dbus_validate_member()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_member	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a valid member name in the D-Bus protocol.

This includes a length restriction, etc., see the specification.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 1063 of file dbus-marshal-validate.c.

References _dbus_assert, _dbus_string_get_length(), DBUS_MAXIMUM_NAME_LENGTH, FALSE, TRUE, VALID_INITIAL_NAME_CHARACTER, and VALID_NAME_CHARACTER.

Referenced by dbus_validate_member().

◆ _dbus_validate_path()

DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_validate_path	(	const DBusString *	str,
		int	start,
		int	len
	)

Checks that the given range of the string is a valid object path name in the D-Bus protocol.

Part of the validation ensures that the object path contains only ASCII.

Parameters

str	the string
start	first byte index to check
len	number of bytes to check

Returns: TRUE if the byte range exists and is a valid name

Definition at line 849 of file dbus-marshal-validate.c.

References _dbus_assert, _dbus_string_get_length(), FALSE, TRUE, and VALID_NAME_CHARACTER.

Referenced by dbus_validate_path().

◆ _dbus_validate_signature_with_reason()

DBUS_PRIVATE_EXPORT DBusValidity _dbus_validate_signature_with_reason	(	const DBusString *	type_str,
		int	type_pos,
		int	len
	)

Verifies that the range of type_str from type_pos to type_end is a valid signature.

If this function returns TRUE, it will be safe to iterate over the signature with a types-only DBusTypeReader. The range passed in should NOT include the terminating nul/DBUS_TYPE_INVALID.

Parameters

type_str	the string
type_pos	where the typecodes start
len	length of typecodes

Returns: DBUS_VALID if valid, reason why invalid otherwise

Definition at line 53 of file dbus-marshal-validate.c.

References _dbus_assert, _DBUS_INT32_MAX, _DBUS_INT_TO_POINTER, _dbus_list_append(), DBUS_MAXIMUM_SIGNATURE_LENGTH, DBUS_MAXIMUM_TYPE_RECURSION_DEPTH, DBUS_VALID, DBUS_VALIDITY_UNKNOWN_OOM_ERROR, and NULL.

Referenced by dbus_signature_validate().

◆ _dbus_validity_to_error_message()

const char * _dbus_validity_to_error_message ( DBusValidity validity )

Definition at line 901 of file dbus-marshal-validate.c.

◆ _dbus_verbose_bytes()

void _dbus_verbose_bytes	(	const unsigned char *	data,
		int	len,
		int	offset
	)

If in verbose mode, print a block of binary data.

Parameters

data	the data
len	the length of the data
offset	where to start counting for byte indexes

Definition at line 1351 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_unpack_uint32(), DBUS_BIG_ENDIAN, DBUS_INT64_MODIFIER, DBUS_LITTLE_ENDIAN, and dbus_uint64_t.

Referenced by _dbus_verbose_bytes_of_string().

◆ _dbus_verbose_bytes_of_string()

void _dbus_verbose_bytes_of_string	(	const DBusString *	str,
		int	start,
		int	len
	)

Dump the given part of the string to verbose log.

Parameters

str	the string
start	the start of range to dump
len	length of range

Definition at line 1428 of file dbus-marshal-basic.c.

References _dbus_assert, _dbus_string_get_const_data_len(), _dbus_string_get_length(), and _dbus_verbose_bytes().

Referenced by _dbus_read(), _dbus_read_socket(), _dbus_type_reader_set_basic(), _dbus_write(), and _dbus_write_socket().

Data Structures

Macros

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ _dbus_validate_utf8

◆ ARRAY_READER_LEN_POS

◆ BODY_LENGTH_OFFSET

◆ BYTE_ORDER_OFFSET

◆ DECLARE_DBUS_NAME_CHECK

◆ DEFINE_DBUS_NAME_CHECK

◆ EXPECTED_TYPE_OF_FIELD

◆ FIELDS_ARRAY_ELEMENT_SIGNATURE_OFFSET

◆ FIELDS_ARRAY_LENGTH_OFFSET

◆ FIELDS_ARRAY_SIGNATURE_OFFSET

◆ FIRST_FIELD_OFFSET

◆ FLAGS_OFFSET

◆ HEADER_END_BEFORE_PADDING

◆ MAX_POSSIBLE_HEADER_PADDING

◆ RECURSIVE_MARSHAL_READ_TRACE

◆ RECURSIVE_MARSHAL_WRITE_TRACE

◆ SERIAL_OFFSET

◆ TYPE_OFFSET

◆ VALID_BUS_NAME_CHARACTER

◆ VALID_INITIAL_BUS_NAME_CHARACTER

◆ VALID_INITIAL_NAME_CHARACTER

◆ VALID_NAME_CHARACTER

◆ VERSION_OFFSET

Enumeration Type Documentation

◆ anonymous enum

◆ DBusValidationMode

◆ DBusValidity

Function Documentation

◆ _dbus_first_type_in_signature()

◆ _dbus_first_type_in_signature_c_str()

◆ _dbus_header_byteswap()

◆ _dbus_header_copy()

◆ _dbus_header_create()

◆ _dbus_header_delete_field()

◆ _dbus_header_free()

◆ _dbus_header_get_byte_order()

◆ _dbus_header_get_field_basic()

◆ _dbus_header_get_field_raw()

◆ _dbus_header_get_flag()

◆ _dbus_header_get_message_type()

◆ _dbus_header_get_serial()

◆ _dbus_header_have_message_untrusted()

◆ _dbus_header_init()

◆ _dbus_header_load()

◆ _dbus_header_reinit()

◆ _dbus_header_remove_unknown_fields()

◆ _dbus_header_set_field_basic()

◆ _dbus_header_set_serial()

◆ _dbus_header_toggle_flag()

◆ _dbus_header_update_lengths()

◆ _dbus_marshal_byteswap()

◆ _dbus_marshal_read_basic()

◆ _dbus_marshal_read_uint32()

◆ _dbus_marshal_set_basic()

◆ _dbus_marshal_set_uint32()

◆ _dbus_marshal_skip_array()

◆ _dbus_marshal_skip_basic()

◆ _dbus_marshal_write_basic()

◆ _dbus_marshal_write_fixed_multi()

◆ _dbus_pack_uint32()

◆ _dbus_swap_array()

◆ _dbus_type_get_alignment()

◆ _dbus_type_reader_delete()

◆ _dbus_type_reader_get_array_length()

◆ _dbus_type_reader_get_current_type()

◆ _dbus_type_reader_get_element_type()

◆ _dbus_type_reader_get_signature()

◆ _dbus_type_reader_get_value_pos()

◆ _dbus_type_reader_has_next()

◆ _dbus_type_reader_init()

◆ _dbus_type_reader_init_types_only()

◆ _dbus_type_reader_next()

◆ _dbus_type_reader_read_basic()

◆ _dbus_type_reader_read_fixed_multi()