1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2013 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/socket.h>
31 #include "time-util.h"
32 #include "bus-creds.h"
33 #include "bus-protocol.h"
35 struct bus_container {
38 unsigned index, saved_index;
56 struct bus_body_part {
57 struct bus_body_part *next;
68 struct sd_bus_message {
73 uint32_t reply_serial;
76 const char *interface;
78 const char *destination;
97 struct bus_header *header;
98 struct bus_body_part body;
99 struct bus_body_part *body_end;
100 unsigned n_body_parts;
103 struct bus_body_part *cached_rindex_part;
104 size_t cached_rindex_part_begin;
109 struct bus_container root_container, *containers;
110 unsigned n_containers;
113 struct iovec iovec_fixed[2];
116 struct kdbus_msg *kdbus;
118 char *peeked_signature;
120 /* If set replies to this message must carry the signature
121 * specified here to successfully seal. This is initialized
122 * from the vtable data */
123 const char *enforced_reply_signature;
127 char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
128 char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
131 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != BUS_NATIVE_ENDIAN)
133 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
134 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
137 static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
138 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
141 static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
142 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
145 static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) {
146 return BUS_MESSAGE_BSWAP32(m, m->header->serial);
149 static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) {
150 return BUS_MESSAGE_BSWAP32(m, m->header->body_size);
153 static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) {
154 return BUS_MESSAGE_BSWAP32(m, m->header->fields_size);
157 static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
159 sizeof(struct bus_header) +
160 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) +
161 BUS_MESSAGE_BODY_SIZE(m);
164 static inline uint32_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
166 sizeof(struct bus_header) +
167 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m));
170 static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
171 return (uint8_t*) m->header + sizeof(struct bus_header);
174 int bus_message_seal(sd_bus_message *m, uint64_t serial);
175 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
176 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
178 int bus_message_from_header(
184 const struct ucred *ucred,
187 sd_bus_message **ret);
189 int bus_message_from_malloc(
195 const struct ucred *ucred,
197 sd_bus_message **ret);
199 const char* bus_message_get_arg(sd_bus_message *m, unsigned i);
201 int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap);
203 int bus_message_parse_fields(sd_bus_message *m);
205 bool bus_header_is_complete(struct bus_header *h, size_t size);
206 int bus_header_message_size(struct bus_header *h, size_t *sum);
208 struct bus_body_part *message_append_part(sd_bus_message *m);
210 #define MESSAGE_FOREACH_PART(part, i, m) \
211 for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
213 int bus_body_part_map(struct bus_body_part *part);
214 void bus_body_part_unmap(struct bus_body_part *part);
216 int bus_message_to_errno(sd_bus_message *m);
218 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);