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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 | ||
b3af9646 | 36 | unsigned index, saved_index; |
de1c301e | 37 | |
453a0c29 LP |
38 | char *signature; |
39 | ||
de1c301e | 40 | uint32_t *array_size; |
b3af9646 | 41 | size_t before, begin; |
de1c301e LP |
42 | }; |
43 | ||
cb695f05 | 44 | struct bus_header { |
de1c301e LP |
45 | uint8_t endian; |
46 | uint8_t type; | |
47 | uint8_t flags; | |
48 | uint8_t version; | |
49 | uint32_t body_size; | |
50 | uint32_t serial; | |
51 | uint32_t fields_size; | |
cb695f05 | 52 | } _packed_; |
de1c301e | 53 | |
bc7fd8cd | 54 | struct bus_body_part { |
453a0c29 | 55 | struct bus_body_part *next; |
bc7fd8cd LP |
56 | void *data; |
57 | size_t size; | |
58 | size_t mapped; | |
59 | int memfd; | |
60 | bool free_this:1; | |
453a0c29 | 61 | bool munmap_this:1; |
bc7fd8cd | 62 | bool sealed:1; |
453a0c29 | 63 | bool is_zero:1; |
bc7fd8cd LP |
64 | }; |
65 | ||
de1c301e LP |
66 | struct sd_bus_message { |
67 | unsigned n_ref; | |
68 | ||
fd8d62d9 LP |
69 | sd_bus *bus; |
70 | ||
de1c301e LP |
71 | uint32_t reply_serial; |
72 | ||
73 | const char *path; | |
74 | const char *interface; | |
75 | const char *member; | |
76 | const char *destination; | |
77 | const char *sender; | |
de1c301e LP |
78 | |
79 | sd_bus_error error; | |
80 | ||
81 | uid_t uid; | |
82 | gid_t gid; | |
83 | pid_t pid; | |
84 | pid_t tid; | |
8323bc1f | 85 | usec_t pid_starttime; |
69aec65c LP |
86 | usec_t monotonic; |
87 | usec_t realtime; | |
de1c301e LP |
88 | |
89 | bool sealed:1; | |
2c93b4ef LP |
90 | bool dont_send:1; |
91 | bool allow_fds:1; | |
de1c301e LP |
92 | bool uid_valid:1; |
93 | bool gid_valid:1; | |
94 | bool free_header:1; | |
6629161f | 95 | bool free_kdbus:1; |
2c93b4ef | 96 | bool free_fds:1; |
fd8d62d9 | 97 | bool release_kdbus:1; |
bc7fd8cd | 98 | bool poisoned:1; |
de1c301e LP |
99 | |
100 | struct bus_header *header; | |
bc7fd8cd LP |
101 | struct bus_body_part body; |
102 | struct bus_body_part *body_end; | |
103 | unsigned n_body_parts; | |
de1c301e | 104 | |
2571ead1 LP |
105 | char *label; |
106 | ||
9a17484d | 107 | size_t rindex; |
bc7fd8cd LP |
108 | struct bus_body_part *cached_rindex_part; |
109 | size_t cached_rindex_part_begin; | |
9a17484d | 110 | |
de1c301e LP |
111 | uint32_t n_fds; |
112 | int *fds; | |
113 | ||
9a17484d | 114 | struct bus_container root_container, *containers; |
de1c301e LP |
115 | unsigned n_containers; |
116 | ||
bc7fd8cd | 117 | struct iovec *iovec; |
c91cb83c | 118 | struct iovec iovec_fixed[2]; |
de1c301e | 119 | unsigned n_iovec; |
9a17484d | 120 | |
bc7fd8cd LP |
121 | struct kdbus_msg *kdbus; |
122 | ||
9a17484d | 123 | char *peeked_signature; |
6629161f LP |
124 | |
125 | usec_t timeout; | |
51038c03 LP |
126 | |
127 | char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
128 | char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1]; | |
69aec65c LP |
129 | |
130 | const char *exe; | |
131 | const char *comm; | |
132 | const char *tid_comm; | |
4a875b61 | 133 | const char *cgroup; |
77930f11 LP |
134 | |
135 | const char *cmdline; | |
136 | size_t cmdline_length; | |
77930f11 | 137 | char **cmdline_array; |
d8d3d8a7 LP |
138 | |
139 | char *session; | |
140 | char *unit; | |
141 | char *user_unit; | |
120f919e LP |
142 | |
143 | struct kdbus_audit *audit; | |
102ea8e4 LP |
144 | |
145 | uint8_t *capability; | |
146 | size_t capability_size; | |
de1c301e LP |
147 | }; |
148 | ||
80a46c73 | 149 | #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN) |
de1c301e | 150 | |
9a17484d LP |
151 | static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) { |
152 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u; | |
153 | } | |
154 | ||
155 | static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) { | |
de1c301e LP |
156 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u; |
157 | } | |
158 | ||
9a17484d LP |
159 | static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) { |
160 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u; | |
161 | } | |
162 | ||
de1c301e | 163 | static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) { |
9a17484d | 164 | return BUS_MESSAGE_BSWAP32(m, m->header->serial); |
de1c301e LP |
165 | } |
166 | ||
167 | static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) { | |
9a17484d | 168 | return BUS_MESSAGE_BSWAP32(m, m->header->body_size); |
de1c301e LP |
169 | } |
170 | ||
171 | static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) { | |
9a17484d | 172 | return BUS_MESSAGE_BSWAP32(m, m->header->fields_size); |
de1c301e LP |
173 | } |
174 | ||
6629161f LP |
175 | static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) { |
176 | return | |
177 | sizeof(struct bus_header) + | |
178 | ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) + | |
179 | BUS_MESSAGE_BODY_SIZE(m); | |
180 | } | |
181 | ||
c91cb83c LP |
182 | static inline uint32_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) { |
183 | return | |
184 | sizeof(struct bus_header) + | |
185 | ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)); | |
186 | } | |
187 | ||
188 | static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) { | |
189 | return (uint8_t*) m->header + sizeof(struct bus_header); | |
190 | } | |
191 | ||
9a17484d | 192 | int bus_message_seal(sd_bus_message *m, uint64_t serial); |
de1c301e | 193 | int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz); |
89ffcd2a | 194 | int bus_message_read_strv_extend(sd_bus_message *m, char ***l); |
2c93b4ef | 195 | |
6629161f | 196 | int bus_message_from_header( |
df2d202e | 197 | sd_bus *bus, |
6629161f LP |
198 | void *header, |
199 | size_t length, | |
200 | int *fds, | |
201 | unsigned n_fds, | |
202 | const struct ucred *ucred, | |
203 | const char *label, | |
204 | size_t extra, | |
205 | sd_bus_message **ret); | |
206 | ||
2c93b4ef | 207 | int bus_message_from_malloc( |
df2d202e | 208 | sd_bus *bus, |
2c93b4ef LP |
209 | void *buffer, |
210 | size_t length, | |
211 | int *fds, | |
212 | unsigned n_fds, | |
213 | const struct ucred *ucred, | |
214 | const char *label, | |
215 | sd_bus_message **ret); | |
392d5b37 LP |
216 | |
217 | const char* bus_message_get_arg(sd_bus_message *m, unsigned i); | |
917b5dc7 LP |
218 | |
219 | int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap); | |
2100fa10 | 220 | |
6629161f LP |
221 | int bus_message_parse_fields(sd_bus_message *m); |
222 | ||
c91cb83c LP |
223 | bool bus_header_is_complete(struct bus_header *h, size_t size); |
224 | int bus_header_message_size(struct bus_header *h, size_t *sum); | |
bc7fd8cd LP |
225 | |
226 | struct bus_body_part *message_append_part(sd_bus_message *m); | |
9b29bb68 LP |
227 | |
228 | #define MESSAGE_FOREACH_PART(part, i, m) \ | |
229 | for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next) | |
a392d361 LP |
230 | |
231 | int bus_body_part_map(struct bus_body_part *part); | |
232 | void bus_body_part_unmap(struct bus_body_part *part); | |
eb01ba5d LP |
233 | |
234 | int bus_message_to_errno(sd_bus_message *m); | |
235 | ||
236 | int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m); |