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de1c301e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | #pragma once | |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2013 Lennart Poettering | |
9 | ||
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. | |
14 | ||
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. | |
19 | ||
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/>. | |
22 | ***/ | |
23 | ||
24 | #include <stdbool.h> | |
25 | #include <byteswap.h> | |
2571ead1 | 26 | #include <sys/socket.h> |
de1c301e LP |
27 | |
28 | #include "macro.h" | |
29 | #include "sd-bus.h" | |
6629161f | 30 | #include "kdbus.h" |
dd418b9a | 31 | #include "time-util.h" |
de1c301e LP |
32 | |
33 | struct bus_container { | |
34 | char enclosing; | |
35 | ||
36 | char *signature; | |
b3af9646 | 37 | unsigned index, saved_index; |
de1c301e LP |
38 | |
39 | uint32_t *array_size; | |
b3af9646 | 40 | size_t before, begin; |
de1c301e LP |
41 | }; |
42 | ||
cb695f05 | 43 | struct bus_header { |
de1c301e LP |
44 | uint8_t endian; |
45 | uint8_t type; | |
46 | uint8_t flags; | |
47 | uint8_t version; | |
48 | uint32_t body_size; | |
49 | uint32_t serial; | |
50 | uint32_t fields_size; | |
cb695f05 | 51 | } _packed_; |
de1c301e | 52 | |
bc7fd8cd LP |
53 | struct bus_body_part { |
54 | void *data; | |
55 | size_t size; | |
56 | size_t mapped; | |
57 | int memfd; | |
58 | bool free_this:1; | |
59 | bool sealed:1; | |
60 | struct bus_body_part *next; | |
61 | }; | |
62 | ||
de1c301e LP |
63 | struct sd_bus_message { |
64 | unsigned n_ref; | |
65 | ||
fd8d62d9 LP |
66 | sd_bus *bus; |
67 | ||
de1c301e LP |
68 | uint32_t reply_serial; |
69 | ||
70 | const char *path; | |
71 | const char *interface; | |
72 | const char *member; | |
73 | const char *destination; | |
74 | const char *sender; | |
de1c301e LP |
75 | |
76 | sd_bus_error error; | |
77 | ||
78 | uid_t uid; | |
79 | gid_t gid; | |
80 | pid_t pid; | |
81 | pid_t tid; | |
8323bc1f | 82 | usec_t pid_starttime; |
69aec65c LP |
83 | usec_t monotonic; |
84 | usec_t realtime; | |
de1c301e LP |
85 | |
86 | bool sealed:1; | |
2c93b4ef LP |
87 | bool dont_send:1; |
88 | bool allow_fds:1; | |
de1c301e LP |
89 | bool uid_valid:1; |
90 | bool gid_valid:1; | |
91 | bool free_header:1; | |
92 | bool free_fields:1; | |
6629161f | 93 | bool free_kdbus:1; |
2c93b4ef | 94 | bool free_fds:1; |
fd8d62d9 | 95 | bool release_kdbus:1; |
bc7fd8cd | 96 | bool poisoned:1; |
de1c301e LP |
97 | |
98 | struct bus_header *header; | |
99 | void *fields; | |
bc7fd8cd LP |
100 | struct bus_body_part body; |
101 | struct bus_body_part *body_end; | |
102 | unsigned n_body_parts; | |
de1c301e | 103 | |
2571ead1 LP |
104 | char *label; |
105 | ||
9a17484d | 106 | size_t rindex; |
bc7fd8cd LP |
107 | struct bus_body_part *cached_rindex_part; |
108 | size_t cached_rindex_part_begin; | |
9a17484d | 109 | |
de1c301e LP |
110 | uint32_t n_fds; |
111 | int *fds; | |
112 | ||
9a17484d | 113 | struct bus_container root_container, *containers; |
de1c301e LP |
114 | unsigned n_containers; |
115 | ||
bc7fd8cd LP |
116 | struct iovec *iovec; |
117 | struct iovec iovec_fixed[3]; | |
de1c301e | 118 | unsigned n_iovec; |
9a17484d | 119 | |
bc7fd8cd LP |
120 | struct kdbus_msg *kdbus; |
121 | ||
9a17484d | 122 | char *peeked_signature; |
6629161f LP |
123 | |
124 | usec_t timeout; | |
51038c03 LP |
125 | |
126 | char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
127 | char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
69aec65c LP |
128 | |
129 | const char *exe; | |
130 | const char *comm; | |
131 | const char *tid_comm; | |
4a875b61 | 132 | const char *cgroup; |
77930f11 LP |
133 | |
134 | const char *cmdline; | |
135 | size_t cmdline_length; | |
77930f11 | 136 | char **cmdline_array; |
d8d3d8a7 LP |
137 | |
138 | char *session; | |
139 | char *unit; | |
140 | char *user_unit; | |
120f919e LP |
141 | |
142 | struct kdbus_audit *audit; | |
102ea8e4 LP |
143 | |
144 | uint8_t *capability; | |
145 | size_t capability_size; | |
de1c301e LP |
146 | }; |
147 | ||
80a46c73 | 148 | #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN) |
de1c301e | 149 | |
9a17484d LP |
150 | static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) { |
151 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u; | |
152 | } | |
153 | ||
154 | static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) { | |
de1c301e LP |
155 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u; |
156 | } | |
157 | ||
9a17484d LP |
158 | static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) { |
159 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u; | |
160 | } | |
161 | ||
de1c301e | 162 | static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) { |
9a17484d | 163 | return BUS_MESSAGE_BSWAP32(m, m->header->serial); |
de1c301e LP |
164 | } |
165 | ||
166 | static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) { | |
9a17484d | 167 | return BUS_MESSAGE_BSWAP32(m, m->header->body_size); |
de1c301e LP |
168 | } |
169 | ||
170 | static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) { | |
9a17484d | 171 | return BUS_MESSAGE_BSWAP32(m, m->header->fields_size); |
de1c301e LP |
172 | } |
173 | ||
6629161f LP |
174 | static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) { |
175 | return | |
176 | sizeof(struct bus_header) + | |
177 | ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) + | |
178 | BUS_MESSAGE_BODY_SIZE(m); | |
179 | } | |
180 | ||
de1c301e LP |
181 | static inline void bus_message_unrefp(sd_bus_message **m) { |
182 | sd_bus_message_unref(*m); | |
183 | } | |
184 | ||
185 | #define _cleanup_bus_message_unref_ __attribute__((cleanup(bus_message_unrefp))) | |
186 | ||
9a17484d LP |
187 | int bus_message_seal(sd_bus_message *m, uint64_t serial); |
188 | int bus_message_dump(sd_bus_message *m); | |
de1c301e | 189 | int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz); |
89ffcd2a | 190 | int bus_message_read_strv_extend(sd_bus_message *m, char ***l); |
2c93b4ef | 191 | |
6629161f LP |
192 | int bus_message_from_header( |
193 | void *header, | |
194 | size_t length, | |
195 | int *fds, | |
196 | unsigned n_fds, | |
197 | const struct ucred *ucred, | |
198 | const char *label, | |
199 | size_t extra, | |
200 | sd_bus_message **ret); | |
201 | ||
2c93b4ef LP |
202 | int bus_message_from_malloc( |
203 | void *buffer, | |
204 | size_t length, | |
205 | int *fds, | |
206 | unsigned n_fds, | |
207 | const struct ucred *ucred, | |
208 | const char *label, | |
209 | sd_bus_message **ret); | |
392d5b37 LP |
210 | |
211 | const char* bus_message_get_arg(sd_bus_message *m, unsigned i); | |
917b5dc7 LP |
212 | |
213 | int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap); | |
2100fa10 | 214 | |
6629161f LP |
215 | int bus_message_parse_fields(sd_bus_message *m); |
216 | ||
217 | int bus_header_size(struct bus_header *h, size_t *sum); | |
bc7fd8cd LP |
218 | |
219 | struct bus_body_part *message_append_part(sd_bus_message *m); |