1 /* SPDX-License-Identifier: LGPL-2.1+ */
9 #include <sys/socket.h>
13 #include "bus-creds.h"
14 #include "bus-protocol.h"
16 #include "time-util.h"
18 struct bus_container {
22 /* Indexes into the signature string */
23 unsigned index, saved_index;
26 size_t before, begin, end;
28 /* dbus1: pointer to the array size value, if this is a value */
31 /* gvariant: list of offsets to end of children if this is struct/dict entry/array */
32 size_t *offsets, n_offsets, offsets_allocated, offset_index;
35 char *peeked_signature;
38 struct bus_body_part {
39 struct bus_body_part *next;
45 uint64_t memfd_offset;
53 struct sd_bus_message {
58 uint64_t reply_cookie;
61 const char *interface;
63 const char *destination;
74 uint64_t verify_destination_id;
83 /* The first and last bytes of the message */
84 struct bus_header *header;
87 /* How many bytes are accessible in the above pointers */
88 size_t header_accessible;
89 size_t footer_accessible;
93 size_t user_body_size;
95 struct bus_body_part body;
96 struct bus_body_part *body_end;
97 unsigned n_body_parts;
100 struct bus_body_part *cached_rindex_part;
101 size_t cached_rindex_part_begin;
106 struct bus_container root_container, *containers;
108 size_t containers_allocated;
111 struct iovec iovec_fixed[2];
114 char *peeked_signature;
116 /* If set replies to this message must carry the signature
117 * specified here to successfully seal. This is initialized
118 * from the vtable data */
119 const char *enforced_reply_signature;
123 size_t header_offsets[_BUS_MESSAGE_HEADER_MAX];
124 unsigned n_header_offsets;
127 static inline bool BUS_MESSAGE_NEED_BSWAP(sd_bus_message *m) {
128 return m->header->endian != BUS_NATIVE_ENDIAN;
131 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
132 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
135 static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
136 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
139 static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
140 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
143 static inline uint64_t BUS_MESSAGE_COOKIE(sd_bus_message *m) {
144 if (m->header->version == 2)
145 return BUS_MESSAGE_BSWAP64(m, m->header->dbus2.cookie);
147 return BUS_MESSAGE_BSWAP32(m, m->header->dbus1.serial);
150 static inline size_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
152 sizeof(struct bus_header) +
153 ALIGN8(m->fields_size) +
157 static inline size_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
159 sizeof(struct bus_header) +
160 ALIGN8(m->fields_size);
163 static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
164 return (uint8_t*) m->header + sizeof(struct bus_header);
167 static inline bool BUS_MESSAGE_IS_GVARIANT(sd_bus_message *m) {
168 return m->header->version == 2;
171 #if 0 /// UNNEEDED by elogind
172 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
174 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
176 int bus_message_from_header(
179 size_t header_accessible,
181 size_t footer_accessible,
187 sd_bus_message **ret);
189 int bus_message_from_malloc(
196 sd_bus_message **ret);
198 int bus_message_get_arg(sd_bus_message *m, unsigned i, const char **str);
199 int bus_message_get_arg_strv(sd_bus_message *m, unsigned i, char ***strv);
201 int bus_message_parse_fields(sd_bus_message *m);
203 struct bus_body_part *message_append_part(sd_bus_message *m);
205 #define MESSAGE_FOREACH_PART(part, i, m) \
206 for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
208 int bus_body_part_map(struct bus_body_part *part);
209 void bus_body_part_unmap(struct bus_body_part *part);
211 int bus_message_to_errno(sd_bus_message *m);
213 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);
215 int bus_message_remarshal(sd_bus *bus, sd_bus_message **m);
217 #if 0 /// UNNEEDED by elogind
218 int bus_message_append_sender(sd_bus_message *m, const char *sender);
221 void bus_message_set_sender_driver(sd_bus *bus, sd_bus_message *m);
222 void bus_message_set_sender_local(sd_bus *bus, sd_bus_message *m);