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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | /* | |
23 | * IDev | |
24 | */ | |
25 | ||
26 | #pragma once | |
27 | ||
28 | #include <inttypes.h> | |
c93e5a62 DH |
29 | #include <libudev.h> |
30 | #include <linux/input.h> | |
e202fa31 DH |
31 | #include <stdbool.h> |
32 | #include <stdlib.h> | |
33 | #include <systemd/sd-bus.h> | |
34 | #include <systemd/sd-event.h> | |
e06cc7b0 | 35 | #include <xkbcommon/xkbcommon.h> |
e202fa31 DH |
36 | #include "util.h" |
37 | ||
38 | typedef struct idev_data idev_data; | |
c93e5a62 | 39 | typedef struct idev_data_evdev idev_data_evdev; |
e06cc7b0 | 40 | typedef struct idev_data_keyboard idev_data_keyboard; |
e202fa31 DH |
41 | |
42 | typedef struct idev_event idev_event; | |
43 | typedef struct idev_device idev_device; | |
44 | typedef struct idev_session idev_session; | |
45 | typedef struct idev_context idev_context; | |
46 | ||
47 | /* | |
48 | * Types | |
49 | */ | |
50 | ||
51 | enum { | |
c93e5a62 | 52 | IDEV_ELEMENT_EVDEV, |
e202fa31 DH |
53 | IDEV_ELEMENT_CNT |
54 | }; | |
55 | ||
56 | enum { | |
e06cc7b0 | 57 | IDEV_DEVICE_KEYBOARD, |
e202fa31 DH |
58 | IDEV_DEVICE_CNT |
59 | }; | |
60 | ||
c93e5a62 DH |
61 | /* |
62 | * Evdev Elements | |
63 | */ | |
64 | ||
65 | struct idev_data_evdev { | |
66 | struct input_event event; | |
67 | }; | |
68 | ||
e06cc7b0 DH |
69 | /* |
70 | * Keyboard Devices | |
71 | */ | |
72 | ||
73 | struct xkb_state; | |
74 | ||
75 | enum { | |
76 | IDEV_KBDMOD_IDX_SHIFT, | |
77 | IDEV_KBDMOD_IDX_CTRL, | |
78 | IDEV_KBDMOD_IDX_ALT, | |
79 | IDEV_KBDMOD_IDX_LINUX, | |
80 | IDEV_KBDMOD_IDX_CAPS, | |
81 | IDEV_KBDMOD_CNT, | |
82 | ||
83 | IDEV_KBDMOD_SHIFT = 1 << IDEV_KBDMOD_IDX_SHIFT, | |
84 | IDEV_KBDMOD_CTRL = 1 << IDEV_KBDMOD_IDX_CTRL, | |
85 | IDEV_KBDMOD_ALT = 1 << IDEV_KBDMOD_IDX_ALT, | |
86 | IDEV_KBDMOD_LINUX = 1 << IDEV_KBDMOD_IDX_LINUX, | |
87 | IDEV_KBDMOD_CAPS = 1 << IDEV_KBDMOD_IDX_CAPS, | |
88 | }; | |
89 | ||
90 | enum { | |
91 | IDEV_KBDLED_IDX_NUM, | |
92 | IDEV_KBDLED_IDX_CAPS, | |
93 | IDEV_KBDLED_IDX_SCROLL, | |
94 | IDEV_KBDLED_CNT, | |
95 | ||
96 | IDEV_KBDLED_NUM = 1 << IDEV_KBDLED_IDX_NUM, | |
97 | IDEV_KBDLED_CAPS = 1 << IDEV_KBDLED_IDX_CAPS, | |
98 | IDEV_KBDLED_SCROLL = 1 << IDEV_KBDLED_IDX_SCROLL, | |
99 | }; | |
100 | ||
101 | struct idev_data_keyboard { | |
102 | struct xkb_state *xkb_state; | |
103 | int8_t ascii; | |
104 | uint8_t value; | |
105 | uint16_t keycode; | |
106 | uint32_t mods; | |
107 | uint32_t consumed_mods; | |
108 | uint32_t n_syms; | |
109 | uint32_t *keysyms; | |
110 | uint32_t *codepoints; | |
111 | }; | |
112 | ||
884964a9 DH |
113 | static inline bool idev_kbdmatch(idev_data_keyboard *kdata, |
114 | uint32_t mods, uint32_t n_syms, | |
115 | const uint32_t *syms) { | |
116 | const uint32_t significant = IDEV_KBDMOD_SHIFT | | |
117 | IDEV_KBDMOD_CTRL | | |
118 | IDEV_KBDMOD_ALT | | |
119 | IDEV_KBDMOD_LINUX; | |
120 | uint32_t real; | |
121 | ||
122 | if (n_syms != kdata->n_syms) | |
123 | return false; | |
124 | ||
125 | real = kdata->mods & ~kdata->consumed_mods & significant; | |
62d5068d | 126 | if (real != mods) |
884964a9 DH |
127 | return false; |
128 | ||
129 | return !memcmp(syms, kdata->keysyms, n_syms * sizeof(*syms)); | |
130 | } | |
131 | ||
132 | #define IDEV_KBDMATCH(_kdata, _mods, _sym) \ | |
133 | idev_kbdmatch((_kdata), (_mods), 1, (const uint32_t[]){ (_sym) }) | |
134 | ||
e202fa31 DH |
135 | /* |
136 | * Data Packets | |
137 | */ | |
138 | ||
139 | enum { | |
140 | IDEV_DATA_RESYNC, | |
c93e5a62 | 141 | IDEV_DATA_EVDEV, |
e06cc7b0 | 142 | IDEV_DATA_KEYBOARD, |
e202fa31 DH |
143 | IDEV_DATA_CNT |
144 | }; | |
145 | ||
146 | struct idev_data { | |
147 | unsigned int type; | |
148 | bool resync : 1; | |
c93e5a62 DH |
149 | |
150 | union { | |
151 | idev_data_evdev evdev; | |
e06cc7b0 | 152 | idev_data_keyboard keyboard; |
c93e5a62 | 153 | }; |
e202fa31 DH |
154 | }; |
155 | ||
156 | /* | |
157 | * Events | |
158 | */ | |
159 | ||
160 | enum { | |
161 | IDEV_EVENT_DEVICE_ADD, | |
162 | IDEV_EVENT_DEVICE_REMOVE, | |
163 | IDEV_EVENT_DEVICE_DATA, | |
164 | IDEV_EVENT_CNT | |
165 | }; | |
166 | ||
167 | struct idev_event { | |
168 | unsigned int type; | |
169 | union { | |
170 | struct { | |
171 | idev_device *device; | |
172 | } device_add, device_remove; | |
173 | ||
174 | struct { | |
175 | idev_device *device; | |
176 | idev_data data; | |
177 | } device_data; | |
178 | }; | |
179 | }; | |
180 | ||
181 | typedef int (*idev_event_fn) (idev_session *s, void *userdata, idev_event *ev); | |
182 | ||
183 | /* | |
184 | * Devices | |
185 | */ | |
186 | ||
187 | void idev_device_enable(idev_device *d); | |
188 | void idev_device_disable(idev_device *d); | |
189 | ||
190 | /* | |
191 | * Sessions | |
192 | */ | |
193 | ||
194 | enum { | |
195 | IDEV_SESSION_CUSTOM = (1 << 0), | |
196 | IDEV_SESSION_MANAGED = (1 << 1), | |
197 | }; | |
198 | ||
199 | int idev_session_new(idev_session **out, | |
200 | idev_context *c, | |
201 | unsigned int flags, | |
202 | const char *name, | |
203 | idev_event_fn event_fn, | |
204 | void *userdata); | |
205 | idev_session *idev_session_free(idev_session *s); | |
206 | ||
207 | DEFINE_TRIVIAL_CLEANUP_FUNC(idev_session*, idev_session_free); | |
208 | ||
209 | bool idev_session_is_enabled(idev_session *s); | |
210 | void idev_session_enable(idev_session *s); | |
211 | void idev_session_disable(idev_session *s); | |
212 | ||
c93e5a62 DH |
213 | int idev_session_add_evdev(idev_session *s, struct udev_device *ud); |
214 | int idev_session_remove_evdev(idev_session *s, struct udev_device *ud); | |
215 | ||
e202fa31 DH |
216 | /* |
217 | * Contexts | |
218 | */ | |
219 | ||
220 | int idev_context_new(idev_context **out, sd_event *event, sd_bus *sysbus); | |
221 | idev_context *idev_context_ref(idev_context *c); | |
222 | idev_context *idev_context_unref(idev_context *c); | |
223 | ||
224 | DEFINE_TRIVIAL_CLEANUP_FUNC(idev_context*, idev_context_unref); |