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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" | |
30 | ||
31 | struct bus_container { | |
32 | char enclosing; | |
33 | ||
34 | char *signature; | |
35 | unsigned index; | |
36 | ||
37 | uint32_t *array_size; | |
9a17484d | 38 | size_t begin; |
de1c301e LP |
39 | }; |
40 | ||
cb695f05 | 41 | struct bus_header { |
de1c301e LP |
42 | uint8_t endian; |
43 | uint8_t type; | |
44 | uint8_t flags; | |
45 | uint8_t version; | |
46 | uint32_t body_size; | |
47 | uint32_t serial; | |
48 | uint32_t fields_size; | |
cb695f05 | 49 | } _packed_; |
de1c301e LP |
50 | |
51 | struct sd_bus_message { | |
52 | unsigned n_ref; | |
53 | ||
54 | uint32_t reply_serial; | |
55 | ||
56 | const char *path; | |
57 | const char *interface; | |
58 | const char *member; | |
59 | const char *destination; | |
60 | const char *sender; | |
de1c301e LP |
61 | |
62 | sd_bus_error error; | |
63 | ||
64 | uid_t uid; | |
65 | gid_t gid; | |
66 | pid_t pid; | |
67 | pid_t tid; | |
68 | ||
69 | bool sealed:1; | |
2c93b4ef LP |
70 | bool dont_send:1; |
71 | bool allow_fds:1; | |
de1c301e LP |
72 | bool uid_valid:1; |
73 | bool gid_valid:1; | |
74 | bool free_header:1; | |
75 | bool free_fields:1; | |
76 | bool free_body:1; | |
2c93b4ef | 77 | bool free_fds:1; |
de1c301e LP |
78 | |
79 | struct bus_header *header; | |
80 | void *fields; | |
81 | void *body; | |
82 | ||
2571ead1 LP |
83 | char *label; |
84 | ||
9a17484d LP |
85 | size_t rindex; |
86 | ||
de1c301e LP |
87 | uint32_t n_fds; |
88 | int *fds; | |
89 | ||
9a17484d | 90 | struct bus_container root_container, *containers; |
de1c301e LP |
91 | unsigned n_containers; |
92 | ||
93 | struct iovec iovec[4]; | |
94 | unsigned n_iovec; | |
e3017af9 | 95 | size_t size; |
9a17484d LP |
96 | |
97 | char *peeked_signature; | |
de1c301e LP |
98 | }; |
99 | ||
80a46c73 | 100 | #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN) |
de1c301e | 101 | |
9a17484d LP |
102 | static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) { |
103 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u; | |
104 | } | |
105 | ||
106 | static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) { | |
de1c301e LP |
107 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u; |
108 | } | |
109 | ||
9a17484d LP |
110 | static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) { |
111 | return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u; | |
112 | } | |
113 | ||
de1c301e | 114 | static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) { |
9a17484d | 115 | return BUS_MESSAGE_BSWAP32(m, m->header->serial); |
de1c301e LP |
116 | } |
117 | ||
118 | static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) { | |
9a17484d | 119 | return BUS_MESSAGE_BSWAP32(m, m->header->body_size); |
de1c301e LP |
120 | } |
121 | ||
122 | static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) { | |
9a17484d | 123 | return BUS_MESSAGE_BSWAP32(m, m->header->fields_size); |
de1c301e LP |
124 | } |
125 | ||
126 | static inline void bus_message_unrefp(sd_bus_message **m) { | |
127 | sd_bus_message_unref(*m); | |
128 | } | |
129 | ||
130 | #define _cleanup_bus_message_unref_ __attribute__((cleanup(bus_message_unrefp))) | |
131 | ||
9a17484d LP |
132 | int bus_message_seal(sd_bus_message *m, uint64_t serial); |
133 | int bus_message_dump(sd_bus_message *m); | |
de1c301e | 134 | int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz); |
89ffcd2a | 135 | int bus_message_read_strv_extend(sd_bus_message *m, char ***l); |
2c93b4ef LP |
136 | |
137 | int bus_message_from_malloc( | |
138 | void *buffer, | |
139 | size_t length, | |
140 | int *fds, | |
141 | unsigned n_fds, | |
142 | const struct ucred *ucred, | |
143 | const char *label, | |
144 | sd_bus_message **ret); | |
392d5b37 LP |
145 | |
146 | const char* bus_message_get_arg(sd_bus_message *m, unsigned i); |