├── .build.yml ├── .gitignore ├── LICENSE ├── README.md ├── assets └── screenshot.jpg ├── contrib └── systemd-user │ └── poweralertd.service.in ├── dbus.h ├── list.c ├── list.h ├── main.c ├── meson.build ├── meson_options.txt ├── notify.c ├── notify.h ├── poweralertd.1.scd ├── upower.c └── upower.h /.build.yml: -------------------------------------------------------------------------------- 1 | image: archlinux 2 | packages: 3 | - gcc 4 | - meson 5 | sources: 6 | - https://git.sr.ht/~kennylevinsen/poweralertd 7 | tasks: 8 | - build: | 9 | cd poweralertd 10 | meson build 11 | ninja -C build 12 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | build/ 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # poweralertd 2 | 3 | ![screenshot](https://git.sr.ht/~kennylevinsen/poweralertd/blob/master/assets/screenshot.jpg) 4 | 5 | Gives you power notifications as you need them. Just run it. 6 | 7 | Depends on UPower and a notification daemon such as mako. 8 | 9 | ## How to build 10 | 11 | ``` 12 | meson build 13 | ninja -C build 14 | build/poweralertd 15 | ``` 16 | 17 | ## How to discuss 18 | 19 | Go to #kennylevinsen @ irc.libera.chat to discuss, or use [~kennylevinsen/poweralertd-devel@lists.sr.ht](https://lists.sr.ht/~kennylevinsen/poweralertd-devel). 20 | -------------------------------------------------------------------------------- /assets/screenshot.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kennylevinsen/poweralertd/2b54c6486b5dd73588a9626f3b211d2ace061fe8/assets/screenshot.jpg -------------------------------------------------------------------------------- /contrib/systemd-user/poweralertd.service.in: -------------------------------------------------------------------------------- 1 | [Unit] 2 | Description=UPower-powered power alerter 3 | Documentation=man:poweralertd(1) 4 | PartOf=graphical-session.target 5 | Requires=graphical-session.target 6 | 7 | [Service] 8 | Type=simple 9 | ExecStart=@bindir@/poweralertd 10 | Restart=on-failure 11 | 12 | [Install] 13 | WantedBy=graphical-session.target 14 | -------------------------------------------------------------------------------- /dbus.h: -------------------------------------------------------------------------------- 1 | #ifndef _DBUS_H 2 | #define _DBUS_H 3 | 4 | #if defined(HAVE_BASU) 5 | #include 6 | #elif defined(HAVE_ELOGIND) 7 | #include 8 | #elif defined(HAVE_SYSTEMD) 9 | #include 10 | #endif 11 | 12 | #endif 13 | -------------------------------------------------------------------------------- /list.c: -------------------------------------------------------------------------------- 1 | #define _POSIX_C_SOURCE 200809L 2 | #include "list.h" 3 | #include 4 | #include 5 | #include 6 | 7 | list_t *create_list(void) { 8 | list_t *list = malloc(sizeof(list_t)); 9 | if (!list) { 10 | return NULL; 11 | } 12 | list->capacity = 10; 13 | list->length = 0; 14 | list->items = malloc(sizeof(void*) * list->capacity); 15 | return list; 16 | } 17 | 18 | static void list_resize(list_t *list) { 19 | if (list->length == list->capacity) { 20 | list->capacity *= 2; 21 | list->items = realloc(list->items, sizeof(void*) * list->capacity); 22 | } 23 | } 24 | 25 | void list_free(list_t *list) { 26 | if (list == NULL) { 27 | return; 28 | } 29 | free(list->items); 30 | free(list); 31 | } 32 | 33 | void list_add(list_t *list, void *item) { 34 | list_resize(list); 35 | list->items[list->length++] = item; 36 | } 37 | 38 | void list_insert(list_t *list, int index, void *item) { 39 | list_resize(list); 40 | memmove(&list->items[index + 1], &list->items[index], sizeof(void*) * (list->length - index)); 41 | list->length++; 42 | list->items[index] = item; 43 | } 44 | 45 | void list_del(list_t *list, int index) { 46 | list->length--; 47 | memmove(&list->items[index], &list->items[index + 1], sizeof(void*) * (list->length - index)); 48 | } 49 | 50 | int list_seq_find(list_t *list, int compare(const void *item, const void *data), const void *data) { 51 | for (int i = 0; i < list->length; i++) { 52 | void *item = list->items[i]; 53 | if (compare(item, data) == 0) { 54 | return i; 55 | } 56 | } 57 | return -1; 58 | } 59 | 60 | int list_find(list_t *list, const void *item) { 61 | for (int i = 0; i < list->length; i++) { 62 | if (list->items[i] == item) { 63 | return i; 64 | } 65 | } 66 | return -1; 67 | } 68 | -------------------------------------------------------------------------------- /list.h: -------------------------------------------------------------------------------- 1 | #ifndef _LIST_H 2 | #define _LIST_H 3 | 4 | typedef struct { 5 | int capacity; 6 | int length; 7 | void **items; 8 | } list_t; 9 | 10 | list_t *create_list(void); 11 | void list_free(list_t *list); 12 | void list_add(list_t *list, void *item); 13 | void list_insert(list_t *list, int index, void *item); 14 | void list_del(list_t *list, int index); 15 | int list_seq_find(list_t *list, int compare(const void *item, const void *cmp_to), const void *cmp_to); 16 | int list_find(list_t *list, const void *item); 17 | 18 | #endif 19 | -------------------------------------------------------------------------------- /main.c: -------------------------------------------------------------------------------- 1 | #define _POSIX_C_SOURCE 200809L 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | 10 | #include "dbus.h" 11 | #include "notify.h" 12 | #include "upower.h" 13 | #include "list.h" 14 | 15 | #define NOTIFICATION_MAX_LEN 128 16 | 17 | static uint64_t milliseconds_since(struct timespec *start) { 18 | struct timespec current; 19 | if (clock_gettime(CLOCK_MONOTONIC, ¤t) == -1) { 20 | return 0; 21 | } 22 | 23 | return (current.tv_sec - start->tv_sec) * 1000 + (current.tv_nsec - start->tv_nsec) / 1000000; 24 | } 25 | 26 | static int send_remove(sd_bus *bus, struct upower_device *device) { 27 | enum urgency urgency = URGENCY_NORMAL; 28 | char title[NOTIFICATION_MAX_LEN]; 29 | 30 | if (strlen(device->model) > 0) { 31 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s", device->model); 32 | } else { 33 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s (%s)", device->native_path, upower_device_type_string(device)); 34 | } 35 | char *msg = "Device disconnected\n"; 36 | char *category = "device.removed"; 37 | 38 | return notify(bus, title, msg, category, 0, urgency); 39 | } 40 | 41 | static int send_online_update(sd_bus *bus, struct upower_device *device) { 42 | if (device->current.online == device->last.online) { 43 | return 0; 44 | } 45 | 46 | char title[NOTIFICATION_MAX_LEN]; 47 | char *msg; 48 | 49 | if (strlen(device->model) > 0) { 50 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s", device->model); 51 | } else { 52 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s (%s)", device->native_path, upower_device_type_string(device)); 53 | } 54 | char *category; 55 | if (device->current.online) { 56 | msg = "Power supply online"; 57 | category = "power.online"; 58 | } else { 59 | msg = "Power supply offline"; 60 | category = "power.offline"; 61 | } 62 | 63 | return notify(bus, title, msg, category, &device->notifications[SLOT_ONLINE], URGENCY_NORMAL); 64 | } 65 | 66 | static int send_state_update(sd_bus *bus, struct upower_device *device) { 67 | if (device->current.state == device->last.state) { 68 | return 0; 69 | } 70 | 71 | enum urgency urgency; 72 | char title[NOTIFICATION_MAX_LEN]; 73 | char msg[NOTIFICATION_MAX_LEN]; 74 | 75 | switch (device->current.state) { 76 | case UPOWER_DEVICE_STATE_UNKNOWN: 77 | // Silence transitions to/from unknown 78 | device->current.state = device->last.state; 79 | return 0; 80 | case UPOWER_DEVICE_STATE_EMPTY: 81 | urgency = URGENCY_CRITICAL; 82 | break; 83 | default: 84 | urgency = URGENCY_NORMAL; 85 | break; 86 | } 87 | 88 | if (strlen(device->model) > 0) { 89 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s", device->model); 90 | } else { 91 | snprintf(title, NOTIFICATION_MAX_LEN, "Power status: %s (%s)", device->native_path, upower_device_type_string(device)); 92 | } 93 | if (device->current.battery_level != UPOWER_DEVICE_LEVEL_NONE) { 94 | snprintf(msg, NOTIFICATION_MAX_LEN, "Battery %s\nCurrent level: %s\n", upower_device_state_string(device), upower_device_battery_level_string(device)); 95 | } else { 96 | snprintf(msg, NOTIFICATION_MAX_LEN, "Battery %s\nCurrent level: %0.0lf%%\n", upower_device_state_string(device), device->current.percentage); 97 | } 98 | 99 | return notify(bus, title, msg, "power.update", &device->notifications[SLOT_STATE], urgency); 100 | } 101 | 102 | static int send_warning_update(sd_bus *bus, struct upower_device *device) { 103 | if (device->current.warning_level == device->last.warning_level) { 104 | return 0; 105 | } 106 | 107 | if (device->current.warning_level == UPOWER_DEVICE_LEVEL_NONE && device->last.warning_level == UPOWER_DEVICE_LEVEL_UNKNOWN) { 108 | return 0; 109 | } 110 | 111 | enum urgency urgency = URGENCY_CRITICAL; 112 | char title[NOTIFICATION_MAX_LEN]; 113 | char *msg; 114 | char *category; 115 | 116 | switch (device->current.warning_level) { 117 | case UPOWER_DEVICE_LEVEL_NONE: 118 | msg = "Warning cleared\n"; 119 | urgency = URGENCY_NORMAL; 120 | category = "power.cleared"; 121 | break; 122 | case UPOWER_DEVICE_LEVEL_DISCHARGING: 123 | msg = "Warning: system discharging\n"; 124 | category = "power.discharging"; 125 | break; 126 | case UPOWER_DEVICE_LEVEL_LOW: 127 | msg = "Warning: power level low\n"; 128 | category = "power.low"; 129 | break; 130 | case UPOWER_DEVICE_LEVEL_CRITICAL: 131 | msg = "Warning: power level critical\n"; 132 | urgency = URGENCY_CRITICAL; 133 | category = "power.critical"; 134 | break; 135 | case UPOWER_DEVICE_LEVEL_ACTION: 136 | msg = "Warning: power level at action threshold\n"; 137 | category = "power.action"; 138 | break; 139 | default: 140 | msg = "Warning: unknown warning level\n"; 141 | category = "power.unknown"; 142 | break; 143 | } 144 | 145 | if (strlen(device->model) > 0) { 146 | snprintf(title, NOTIFICATION_MAX_LEN, "Power warning: %s", device->model); 147 | } else { 148 | snprintf(title, NOTIFICATION_MAX_LEN, "Power warning: %s (%s)", device->native_path, upower_device_type_string(device)); 149 | } 150 | 151 | return notify(bus, title, msg, category, &device->notifications[SLOT_WARNING], urgency); 152 | } 153 | 154 | static const char usage[] = "usage: %s [options]\n" 155 | " -h show this help message\n" 156 | " -v show the version number\n" 157 | " -s ignore the events at startup\n" 158 | " -i ignore this device type, can be use several times\n" 159 | " -S only use the events coming from power supplies\n"; 160 | 161 | 162 | int main(int argc, char *argv[]) { 163 | int opt = 0; 164 | int device_type = 0; 165 | int ignore_types_mask = 0; 166 | bool ignore_initial = false; 167 | bool ignore_non_power_supplies = false; 168 | bool initialized = false; 169 | 170 | struct timespec start; 171 | if (clock_gettime(CLOCK_MONOTONIC, &start) == -1) { 172 | fprintf(stderr, "could not get current time: %s\n", strerror(errno)); 173 | return EXIT_FAILURE; 174 | } 175 | 176 | while ((opt = getopt(argc, argv, "hvsi:S")) != -1) { 177 | switch (opt) { 178 | case 'i': 179 | device_type = upower_device_type_int(optarg); 180 | if (device_type > -1) { 181 | ignore_types_mask |= 1 << device_type; 182 | } 183 | else { 184 | printf("Unrecognized device type: %s\n", optarg); 185 | } 186 | break; 187 | case 's': 188 | ignore_initial = true; 189 | break; 190 | case 'S': 191 | ignore_non_power_supplies = true; 192 | break; 193 | case 'v': 194 | printf("poweralertd version %s\n", POWERALERTD_VERSION); 195 | return EXIT_SUCCESS; 196 | case 'h': 197 | default: 198 | fprintf(stderr, usage, argv[0]); 199 | return opt == 'h' ? EXIT_SUCCESS : EXIT_FAILURE; 200 | } 201 | } 202 | 203 | struct upower state = { 0 }; 204 | sd_bus *user_bus = NULL; 205 | sd_bus *system_bus = NULL; 206 | int ret; 207 | 208 | ret = sd_bus_open_user(&user_bus); 209 | if (ret < 0) { 210 | fprintf(stderr, "could not connect to session bus: %s\n", strerror(-ret)); 211 | goto finish; 212 | } 213 | 214 | ret = sd_bus_open_system(&system_bus); 215 | if (ret < 0) { 216 | fprintf(stderr, "could not connect to system bus: %s\n", strerror(-ret)); 217 | goto finish; 218 | } 219 | 220 | state.bus = system_bus; 221 | 222 | ret = init_upower(system_bus, &state); 223 | if (ret < 0) { 224 | fprintf(stderr, "could not init upower: %s\n", strerror(-ret)); 225 | goto finish; 226 | } 227 | 228 | while (1) { 229 | for (int idx = 0; idx < state.devices->length; idx++) { 230 | struct upower_device *device = state.devices->items[idx]; 231 | 232 | if ((ignore_types_mask & (1 << device->type))) { 233 | goto next_device; 234 | } 235 | 236 | if (!initialized && ignore_initial) { 237 | goto next_device; 238 | } 239 | 240 | if (ignore_non_power_supplies && !device->power_supply) { 241 | goto next_device; 242 | } 243 | 244 | if (upower_device_has_battery(device)) { 245 | ret = send_state_update(user_bus, device); 246 | if (ret < 0) { 247 | fprintf(stderr, "could not send state update notification: %s\n", strerror(-ret)); 248 | goto finish; 249 | } 250 | ret = send_warning_update(user_bus, device); 251 | if (ret < 0) { 252 | fprintf(stderr, "could not send warning update notification: %s\n", strerror(-ret)); 253 | goto finish; 254 | } 255 | } else { 256 | ret = send_online_update(user_bus, device); 257 | if (ret < 0) { 258 | fprintf(stderr, "could not send online update notification: %s\n", strerror(-ret)); 259 | goto finish; 260 | } 261 | } 262 | next_device: 263 | device->last = device->current; 264 | } 265 | 266 | for (int idx = 0; idx < state.removed_devices->length; idx++) { 267 | struct upower_device *device = state.removed_devices->items[idx]; 268 | 269 | if ((ignore_types_mask & (1 << device->type))) { 270 | continue; 271 | } 272 | 273 | if (ignore_non_power_supplies && !device->power_supply) { 274 | continue; 275 | } 276 | 277 | ret = send_remove(user_bus, device); 278 | if (ret < 0) { 279 | fprintf(stderr, "could not send device removal notification: %s\n", strerror(-ret)); 280 | goto finish; 281 | } 282 | upower_device_destroy(device); 283 | list_del(state.removed_devices, idx); 284 | } 285 | 286 | ret = sd_bus_process(system_bus, NULL); 287 | if (ret < 0) { 288 | fprintf(stderr, "could not process system bus messages: %s\n", strerror(-ret)); 289 | goto finish; 290 | } else if (ret > 0) { 291 | continue; 292 | } 293 | 294 | ret = sd_bus_wait(system_bus, UINT64_MAX); 295 | if (ret < 0) { 296 | fprintf(stderr, "could not wait for system bus messages: %s\n", strerror(-ret)); 297 | goto finish; 298 | } 299 | 300 | if (!initialized) { 301 | initialized = milliseconds_since(&start) > 500; 302 | } 303 | } 304 | 305 | finish: 306 | destroy_upower(system_bus, &state); 307 | sd_bus_unref(user_bus); 308 | sd_bus_unref(system_bus); 309 | 310 | return ret < 0 ? EXIT_FAILURE : EXIT_SUCCESS; 311 | } 312 | -------------------------------------------------------------------------------- /meson.build: -------------------------------------------------------------------------------- 1 | project( 2 | 'poweralertd', 3 | 'c', 4 | license: 'GPL3', 5 | version: '0.3.0', 6 | meson_version: '>=0.47.0', 7 | default_options: [ 8 | 'c_std=c11', 9 | 'warning_level=2', 10 | 'werror=true', 11 | ], 12 | ) 13 | 14 | add_project_arguments([ 15 | '-Wno-unused-parameter', 16 | '-Wno-missing-braces', 17 | '-DPOWERALERTD_VERSION="@0@"'.format(meson.project_version()), 18 | ], 19 | language: 'c', 20 | ) 21 | 22 | configuration = configuration_data() 23 | configuration.set('bindir', join_paths(get_option('prefix'), get_option('bindir'))) 24 | 25 | basu = dependency('basu', required: false) 26 | elogind = dependency('libelogind', required: false) 27 | systemd = dependency('libsystemd', required: false) 28 | 29 | if basu.found() 30 | add_project_arguments('-DHAVE_BASU=1', language: 'c') 31 | sdbus = basu 32 | elif elogind.found() 33 | add_project_arguments('-DHAVE_ELOGIND=1', language: 'c') 34 | sdbus = elogind 35 | elif systemd.found() 36 | add_project_arguments('-DHAVE_SYSTEMD=1', language: 'c') 37 | sdbus = systemd 38 | 39 | systemd = dependency('systemd', required: true) 40 | systemd_units_dir = systemd.get_pkgconfig_variable('systemduserunitdir') 41 | configure_file( 42 | configuration: configuration, 43 | input: 'contrib/systemd-user/poweralertd.service.in', 44 | output: '@BASENAME@', 45 | install_dir: systemd_units_dir 46 | ) 47 | else 48 | dependency('basu') 49 | endif 50 | 51 | executable( 52 | 'poweralertd', 53 | ['main.c', 'upower.c', 'notify.c', 'list.c'], 54 | dependencies: [sdbus], 55 | install: true, 56 | ) 57 | 58 | scdoc = dependency('scdoc', required: get_option('man-pages'), version: '>= 1.9.7', native: true) 59 | 60 | if scdoc.found() 61 | scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true) 62 | sh = find_program('sh', native: true) 63 | 64 | man_pages = ['poweralertd.1.scd'] 65 | 66 | mandir = get_option('mandir') 67 | 68 | foreach src : man_pages 69 | topic = src.split('.')[0] 70 | section = src.split('.')[1] 71 | output = '@0@.@1@'.format(topic, section) 72 | 73 | custom_target( 74 | output, 75 | input: src, 76 | output: output, 77 | command: [ 78 | sh, '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.path(), output) 79 | ], 80 | install: true, 81 | install_dir: '@0@/man@1@'.format(mandir, section) 82 | ) 83 | endforeach 84 | endif 85 | -------------------------------------------------------------------------------- /meson_options.txt: -------------------------------------------------------------------------------- 1 | option('man-pages', type: 'feature', value: 'auto', description: 'Generate and install man pages') -------------------------------------------------------------------------------- /notify.c: -------------------------------------------------------------------------------- 1 | #define _POSIX_C_SOURCE 200809L 2 | #include 3 | #include 4 | #include 5 | #include 6 | 7 | #include "dbus.h" 8 | #include "notify.h" 9 | 10 | int notify(sd_bus *bus, char *summary, char *body, char *category, uint32_t *id, enum urgency urgency) { 11 | sd_bus_error error = SD_BUS_ERROR_NULL; 12 | sd_bus_message *msg = NULL; 13 | int ret = sd_bus_call_method(bus, 14 | "org.freedesktop.Notifications", 15 | "/org/freedesktop/Notifications", 16 | "org.freedesktop.Notifications", 17 | "Notify", 18 | &error, 19 | &msg, 20 | "susssasa{sv}i", 21 | "poweralertd", 22 | id != NULL ? *id : 0, 23 | "", 24 | summary, 25 | body, 26 | 0, 27 | 2, 28 | "urgency", "y", (uint8_t)urgency, 29 | "category", "s", category, 30 | -1); 31 | 32 | if (ret < 0) { 33 | goto error; 34 | } 35 | 36 | if (id != NULL) { 37 | ret = sd_bus_message_read(msg, "u", id); 38 | if (ret < 0) { 39 | goto error; 40 | } 41 | } 42 | 43 | error: 44 | sd_bus_error_free(&error); 45 | sd_bus_message_unref(msg); 46 | 47 | return ret; 48 | } 49 | -------------------------------------------------------------------------------- /notify.h: -------------------------------------------------------------------------------- 1 | #ifndef _NOTIFY_H 2 | #define _NOTIFY_H 3 | 4 | #include "dbus.h" 5 | 6 | // Urgency values to be used as hint in org.freedesktop.Notifications.Notify calls. 7 | // https://people.gnome.org/~mccann/docs/notification-spec/notification-spec-latest.html#hints 8 | enum urgency { 9 | URGENCY_LOW, 10 | URGENCY_NORMAL, 11 | URGENCY_CRITICAL, 12 | }; 13 | 14 | int notify(sd_bus *bus, char *summary, char *body, char *category, uint32_t *id, enum urgency urgency); 15 | 16 | #endif 17 | -------------------------------------------------------------------------------- /poweralertd.1.scd: -------------------------------------------------------------------------------- 1 | poweralertd(1) 2 | 3 | # NAME 4 | 5 | poweralertd - power alert notifications 6 | 7 | # SYNOPSIS 8 | 9 | *poweralertd* 10 | 11 | # DESCRIPTION 12 | 13 | poweralertd monitors all power devices known to UPower, and provides 14 | information about their state and warning levels when these changes. Most 15 | importantly, this allows the user to mitigate power issues before they become 16 | critical. 17 | 18 | # AUTHORS 19 | 20 | Maintained by Kenny Levinsen . For more information about 21 | poweralertd development, see https://git.sr.ht/~kennylevinsen/poweralertd. 22 | -------------------------------------------------------------------------------- /upower.c: -------------------------------------------------------------------------------- 1 | #define _POSIX_C_SOURCE 200809L 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | 8 | #include "dbus.h" 9 | #include "upower.h" 10 | 11 | static char *upower_state_string[UPOWER_DEVICE_STATE_LAST] = { 12 | "unknown", 13 | "charging", 14 | "discharging", 15 | "empty", 16 | "fully charged", 17 | "pending charge", 18 | "pending discharge", 19 | }; 20 | 21 | static char *upower_level_string[UPOWER_DEVICE_LEVEL_LAST] = { 22 | "unknown", 23 | "none", 24 | "discharging", 25 | "low", 26 | "critical", 27 | "action", 28 | "normal", 29 | "high", 30 | "full" 31 | }; 32 | 33 | static char *upower_type_string[UPOWER_DEVICE_TYPE_LAST] = { 34 | "unknown", 35 | "line power", 36 | "battery", 37 | "ups", 38 | "monitor", 39 | "mouse", 40 | "keyboard", 41 | "pda", 42 | "phone", 43 | "media player", 44 | "tablet", 45 | "computer", 46 | "gaming input", 47 | "pen", 48 | "touchpad", 49 | "modem", 50 | "network", 51 | "headset", 52 | "speakers", 53 | "headphones", 54 | "video", 55 | "other audio", 56 | "remote control", 57 | "printer", 58 | "scanner", 59 | "camera", 60 | "wearable", 61 | "toy", 62 | "bluetooth generic", 63 | }; 64 | 65 | int upower_device_has_battery(struct upower_device *device) { 66 | return device->type != UPOWER_DEVICE_TYPE_LINE_POWER && device->type != UPOWER_DEVICE_TYPE_UNKNOWN; 67 | } 68 | 69 | static int upower_compare_path(const void *item, const void *data) { 70 | struct upower_device *device = (struct upower_device *)item; 71 | if (strcmp(device->path, (char*)data) == 0) { 72 | return 0; 73 | } 74 | return -1; 75 | } 76 | 77 | static struct upower_device *upower_device_create() { 78 | struct upower_device *device = calloc(1, sizeof(struct upower_device)); 79 | device->last.warning_level = UPOWER_DEVICE_LEVEL_NONE; 80 | device->current.warning_level = UPOWER_DEVICE_LEVEL_NONE; 81 | device->last.battery_level = UPOWER_DEVICE_LEVEL_NONE; 82 | device->current.battery_level = UPOWER_DEVICE_LEVEL_NONE; 83 | return device; 84 | } 85 | 86 | void upower_device_destroy(struct upower_device *device) { 87 | if (device == NULL) { 88 | return; 89 | } 90 | 91 | if (device->path != NULL) { 92 | free(device->path); 93 | device->path = NULL; 94 | } 95 | if (device->native_path != NULL) { 96 | free(device->native_path); 97 | device->native_path = NULL; 98 | } 99 | if (device->model != NULL) { 100 | free(device->model); 101 | device->model = NULL; 102 | } 103 | if (device->slot != NULL) { 104 | sd_bus_slot_unref(device->slot); 105 | device->slot = NULL; 106 | } 107 | free(device); 108 | } 109 | 110 | char* upower_device_state_string(struct upower_device *device) { 111 | if (device->current.state >= 0 && device->current.state < UPOWER_DEVICE_STATE_LAST) { 112 | return upower_state_string[device->current.state]; 113 | } 114 | return "unknown"; 115 | } 116 | 117 | char* upower_device_warning_level_string(struct upower_device *device) { 118 | if (device->current.warning_level >= 0 && device->current.warning_level < UPOWER_DEVICE_LEVEL_LAST) { 119 | return upower_level_string[device->current.warning_level]; 120 | } 121 | return "unknown"; 122 | } 123 | 124 | char* upower_device_battery_level_string(struct upower_device *device) { 125 | if (device->current.battery_level >= 0 && device->current.battery_level < UPOWER_DEVICE_LEVEL_LAST) { 126 | return upower_level_string[device->current.battery_level]; 127 | } 128 | return "unknown"; 129 | } 130 | 131 | char* upower_device_type_string(struct upower_device *device) { 132 | if (device->type >= 0 && device->type < UPOWER_DEVICE_TYPE_LAST) { 133 | return upower_type_string[device->type]; 134 | } 135 | return "unknown"; 136 | } 137 | 138 | int upower_device_type_int(char *device) { 139 | for (int i=0; i < UPOWER_DEVICE_TYPE_LAST; i++) { 140 | if (!strcmp(upower_type_string[i], device)) { 141 | return i; 142 | } 143 | } 144 | return -1; 145 | } 146 | 147 | static int upower_device_update_state(sd_bus *bus, struct upower_device *device) { 148 | sd_bus_error error = SD_BUS_ERROR_NULL; 149 | int ret; 150 | 151 | char *native_path = NULL; 152 | ret = sd_bus_get_property_string( 153 | bus, 154 | "org.freedesktop.UPower", 155 | device->path, 156 | "org.freedesktop.UPower.Device", 157 | "NativePath", 158 | &error, 159 | &native_path); 160 | if (ret < 0) { 161 | goto finish; 162 | } 163 | if (device->native_path != NULL) { 164 | free(device->native_path); 165 | } 166 | device->native_path = strdup(native_path); 167 | 168 | ret = sd_bus_get_property_trivial( 169 | bus, 170 | "org.freedesktop.UPower", 171 | device->path, 172 | "org.freedesktop.UPower.Device", 173 | "PowerSupply", 174 | &error, 175 | 'b', 176 | &device->power_supply); 177 | if (ret < 0) { 178 | goto finish; 179 | } 180 | 181 | ret = sd_bus_get_property_trivial( 182 | bus, 183 | "org.freedesktop.UPower", 184 | device->path, 185 | "org.freedesktop.UPower.Device", 186 | "Type", 187 | &error, 188 | 'u', 189 | &device->type); 190 | if (ret < 0) { 191 | goto finish; 192 | } 193 | 194 | char *model = NULL; 195 | ret = sd_bus_get_property_string( 196 | bus, 197 | "org.freedesktop.UPower", 198 | device->path, 199 | "org.freedesktop.UPower.Device", 200 | "Model", 201 | &error, 202 | &model); 203 | if (ret < 0) { 204 | goto finish; 205 | } 206 | if (device->model != NULL) { 207 | free(device->model); 208 | } 209 | device->model = strdup(model); 210 | 211 | ret = sd_bus_get_property_trivial( 212 | bus, 213 | "org.freedesktop.UPower", 214 | device->path, 215 | "org.freedesktop.UPower.Device", 216 | "Online", 217 | &error, 218 | 'b', 219 | &device->current.online); 220 | if (ret < 0) { 221 | goto finish; 222 | } 223 | 224 | ret = sd_bus_get_property_trivial( 225 | bus, 226 | "org.freedesktop.UPower", 227 | device->path, 228 | "org.freedesktop.UPower.Device", 229 | "State", 230 | &error, 231 | 'u', 232 | &device->current.state); 233 | if (ret < 0) { 234 | goto finish; 235 | } 236 | 237 | ret = sd_bus_get_property_trivial( 238 | bus, 239 | "org.freedesktop.UPower", 240 | device->path, 241 | "org.freedesktop.UPower.Device", 242 | "WarningLevel", 243 | &error, 244 | 'u', 245 | &device->current.warning_level); 246 | if (ret < 0) { 247 | goto finish; 248 | } 249 | 250 | ret = sd_bus_get_property_trivial( 251 | bus, 252 | "org.freedesktop.UPower", 253 | device->path, 254 | "org.freedesktop.UPower.Device", 255 | "BatteryLevel", 256 | &error, 257 | 'u', 258 | &device->current.battery_level); 259 | if (ret < 0) { 260 | goto finish; 261 | } 262 | 263 | ret = sd_bus_get_property_trivial( 264 | bus, 265 | "org.freedesktop.UPower", 266 | device->path, 267 | "org.freedesktop.UPower.Device", 268 | "Percentage", 269 | &error, 270 | 'd', 271 | &device->current.percentage); 272 | 273 | finish: 274 | sd_bus_error_free(&error); 275 | return ret; 276 | } 277 | 278 | static int handle_upower_device_properties_changed(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { 279 | struct upower_device *state = userdata; 280 | int ret; 281 | 282 | ret = sd_bus_message_skip(msg, "s"); 283 | if (ret < 0) { 284 | goto error; 285 | } 286 | 287 | ret = sd_bus_message_enter_container(msg, 'a', "{sv}"); 288 | if (ret < 0) { 289 | goto error; 290 | } 291 | 292 | while (1) { 293 | ret = sd_bus_message_enter_container(msg, 'e', "sv"); 294 | if (ret < 0) { 295 | goto error; 296 | } else if (ret == 0) { 297 | break; 298 | } 299 | 300 | const char *name = NULL; 301 | ret = sd_bus_message_read(msg, "s", &name); 302 | if (ret < 0) { 303 | goto error; 304 | } 305 | if (strcmp(name, "State") == 0) { 306 | ret = sd_bus_message_read(msg, "v", "u", &state->current.state); 307 | if (ret < 0) { 308 | goto error; 309 | } 310 | } else if (strcmp(name, "WarningLevel") == 0) { 311 | ret = sd_bus_message_read(msg, "v", "u", &state->current.warning_level); 312 | if (ret < 0) { 313 | goto error; 314 | } 315 | } else if (strcmp(name, "BatteryLevel") == 0) { 316 | ret = sd_bus_message_read(msg, "v", "u", &state->current.battery_level); 317 | if (ret < 0) { 318 | goto error; 319 | } 320 | } else if (strcmp(name, "Online") == 0) { 321 | ret = sd_bus_message_read(msg, "v", "b", &state->current.online); 322 | if (ret < 0) { 323 | goto error; 324 | } 325 | } else if (strcmp(name, "Percentage") == 0) { 326 | ret = sd_bus_message_read(msg, "v", "d", &state->current.percentage); 327 | if (ret < 0) { 328 | goto error; 329 | } 330 | } else { 331 | ret = sd_bus_message_skip(msg, "v"); 332 | if (ret < 0) { 333 | goto error; 334 | } 335 | } 336 | 337 | ret = sd_bus_message_exit_container(msg); 338 | if (ret < 0) { 339 | goto error; 340 | } 341 | } 342 | 343 | ret = sd_bus_message_exit_container(msg); 344 | if (ret < 0) { 345 | goto error; 346 | } 347 | 348 | ret = sd_bus_message_enter_container(msg, 'a', "s"); 349 | if (ret < 0) { 350 | goto error; 351 | } 352 | 353 | while (1) { 354 | ret = sd_bus_message_skip(msg, "s"); 355 | if (ret < 0) { 356 | goto error; 357 | } else if (ret == 0) { 358 | break; 359 | } 360 | } 361 | 362 | ret = sd_bus_message_exit_container(msg); 363 | if (ret < 0) { 364 | goto error; 365 | } 366 | 367 | return 0; 368 | 369 | error: 370 | fprintf(stderr, "handle_upower_device_properties_changed failed: %s\n", strerror(-ret)); 371 | return ret; 372 | } 373 | 374 | static int upower_device_register_notification(sd_bus *bus, struct upower_device *device) { 375 | char match[512]; 376 | snprintf(match, 512, "type='signal',path='%s',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'", device->path); 377 | 378 | return sd_bus_add_match(bus, &device->slot, match, handle_upower_device_properties_changed, device); 379 | } 380 | 381 | static int handle_upower_device_added(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { 382 | struct upower *state = userdata; 383 | struct upower_device *device; 384 | int ret, idx; 385 | 386 | char *path; 387 | ret = sd_bus_message_read(msg, "o", &path); 388 | if (ret < 0) { 389 | goto error; 390 | } 391 | 392 | // Look for doubly-added devices 393 | idx = list_seq_find(state->devices, upower_compare_path, path); 394 | if (idx != -1) { 395 | device = state->devices->items[idx]; 396 | goto update; 397 | } 398 | 399 | // Look for recently removed devices 400 | idx = list_seq_find(state->removed_devices, upower_compare_path, path); 401 | if (idx != -1) { 402 | device = state->removed_devices->items[idx]; 403 | list_add(state->devices, device); 404 | list_del(state->removed_devices, idx); 405 | goto update; 406 | } 407 | 408 | // Fresh device 409 | device = calloc(1, sizeof(struct upower_device)); 410 | device->path = strdup(path); 411 | 412 | list_add(state->devices, device); 413 | 414 | ret = upower_device_register_notification(state->bus, device); 415 | if (ret < 0) { 416 | goto error; 417 | } 418 | 419 | update: 420 | ret = upower_device_update_state(state->bus, device); 421 | if (ret < 0) { 422 | goto error; 423 | } 424 | 425 | return 0; 426 | 427 | error: 428 | fprintf(stderr, "handle_upower_device_added failed: %s\n", strerror(-ret)); 429 | return ret; 430 | } 431 | 432 | static int handle_upower_device_removed(sd_bus_message *msg, void *userdata, sd_bus_error *ret_error) { 433 | struct upower *state = userdata; 434 | int ret; 435 | 436 | char *path; 437 | ret = sd_bus_message_read(msg, "o", &path); 438 | if (ret < 0) { 439 | goto error; 440 | } 441 | 442 | int idx = list_seq_find(state->devices, upower_compare_path, path); 443 | if (idx != -1) { 444 | list_add(state->removed_devices, state->devices->items[idx]); 445 | list_del(state->devices, idx); 446 | } 447 | 448 | return 0; 449 | 450 | error: 451 | fprintf(stderr, "handle_upower_device_removed failed: %s\n", strerror(-ret)); 452 | return ret; 453 | } 454 | 455 | int init_upower(sd_bus *bus, struct upower *state) { 456 | sd_bus_error error = SD_BUS_ERROR_NULL; 457 | sd_bus_message *msg = NULL; 458 | int ret; 459 | 460 | ret = sd_bus_add_match( 461 | bus, 462 | NULL, 463 | "type='signal',path='/org/freedesktop/UPower',interface='org.freedesktop.UPower',member='DeviceAdded'", 464 | handle_upower_device_added, 465 | state); 466 | 467 | if (ret < 0) { 468 | goto error; 469 | } 470 | 471 | ret = sd_bus_add_match( 472 | bus, 473 | NULL, 474 | "type='signal',path='/org/freedesktop/UPower',interface='org.freedesktop.UPower',member='DeviceRemoved'", 475 | handle_upower_device_removed, 476 | state); 477 | 478 | if (ret < 0) { 479 | goto error; 480 | } 481 | 482 | ret = sd_bus_call_method(bus, 483 | "org.freedesktop.UPower", 484 | "/org/freedesktop/UPower", 485 | "org.freedesktop.UPower", 486 | "EnumerateDevices", 487 | &error, 488 | &msg, 489 | ""); 490 | 491 | ret = sd_bus_message_enter_container(msg, 'a', "o"); 492 | if (ret < 0) { 493 | goto error; 494 | } 495 | 496 | state->devices = create_list(); 497 | state->removed_devices = create_list(); 498 | 499 | while (1) { 500 | char *path; 501 | ret = sd_bus_message_read(msg, "o", &path); 502 | if (ret < 0) { 503 | goto error; 504 | } else if (ret == 0) { 505 | break; 506 | } 507 | 508 | struct upower_device *device = upower_device_create(); 509 | list_add(state->devices, device); 510 | 511 | device->path = strdup(path); 512 | ret = upower_device_register_notification(bus, device); 513 | if (ret < 0) { 514 | goto error; 515 | } 516 | ret = upower_device_update_state(bus, device); 517 | if (ret < 0) { 518 | goto error; 519 | } 520 | } 521 | 522 | ret = sd_bus_message_exit_container(msg); 523 | if (ret < 0) { 524 | goto error; 525 | } 526 | 527 | error: 528 | sd_bus_error_free(&error); 529 | sd_bus_message_unref(msg); 530 | 531 | return ret; 532 | } 533 | 534 | void destroy_upower(sd_bus *bus, struct upower *state) { 535 | if (state->devices != NULL) { 536 | for (int idx = 0; idx < state->devices->length; idx++) { 537 | upower_device_destroy(state->devices->items[idx]); 538 | } 539 | list_free(state->devices); 540 | state->devices = NULL; 541 | } 542 | } 543 | -------------------------------------------------------------------------------- /upower.h: -------------------------------------------------------------------------------- 1 | #ifndef _UPOWER_H 2 | #define _UPOWER_H 3 | 4 | #include "dbus.h" 5 | #include "list.h" 6 | 7 | // org.freedesktop.UPower.Device.State 8 | // https://upower.freedesktop.org/docs/Device.html 9 | enum upower_device_state { 10 | UPOWER_DEVICE_STATE_UNKNOWN, 11 | UPOWER_DEVICE_STATE_CHARGING, 12 | UPOWER_DEVICE_STATE_DISCHARGING, 13 | UPOWER_DEVICE_STATE_EMPTY, 14 | UPOWER_DEVICE_STATE_FULLY_CHARGED, 15 | UPOWER_DEVICE_STATE_PENDING_CHARGE, 16 | UPOWER_DEVICE_STATE_PENDING_DISCHARGE, 17 | UPOWER_DEVICE_STATE_LAST 18 | }; 19 | 20 | // org.freedesktop.UPower.Device.WarningLevel 21 | // https://upower.freedesktop.org/docs/Device.html 22 | enum upower_device_level { 23 | UPOWER_DEVICE_LEVEL_UNKNOWN, 24 | UPOWER_DEVICE_LEVEL_NONE, 25 | UPOWER_DEVICE_LEVEL_DISCHARGING, 26 | UPOWER_DEVICE_LEVEL_LOW, 27 | UPOWER_DEVICE_LEVEL_CRITICAL, 28 | UPOWER_DEVICE_LEVEL_ACTION, 29 | UPOWER_DEVICE_LEVEL_NORMAL, 30 | UPOWER_DEVICE_LEVEL_HIGH, 31 | UPOWER_DEVICE_LEVEL_FULL, 32 | UPOWER_DEVICE_LEVEL_LAST 33 | 34 | }; 35 | 36 | // org.freedesktop.UPower.Device.Type 37 | // https://upower.freedesktop.org/docs/Device.html 38 | enum upower_device_type { 39 | UPOWER_DEVICE_TYPE_UNKNOWN, 40 | UPOWER_DEVICE_TYPE_LINE_POWER, 41 | UPOWER_DEVICE_TYPE_BATTERY, 42 | UPOWER_DEVICE_TYPE_UPS, 43 | UPOWER_DEVICE_TYPE_MONITOR, 44 | UPOWER_DEVICE_TYPE_MOUSE, 45 | UPOWER_DEVICE_TYPE_KEYBOARD, 46 | UPOWER_DEVICE_TYPE_PDA, 47 | UPOWER_DEVICE_TYPE_PHONE, 48 | UPOWER_DEVICE_TYPE_MEDIA_PLAYER, 49 | UPOWER_DEVICE_TYPE_TABLET, 50 | UPOWER_DEVICE_TYPE_COMPUTER, 51 | UPOWER_DEVICE_TYPE_GAMING_INPUT, 52 | UPOWER_DEVICE_TYPE_PEN, 53 | UPOWER_DEVICE_TYPE_TOUCHPAD, 54 | UPOWER_DEVICE_TYPE_MODEM, 55 | UPOWER_DEVICE_TYPE_NETWORK, 56 | UPOWER_DEVICE_TYPE_HEADSET, 57 | UPOWER_DEVICE_TYPE_SPEAKERS, 58 | UPOWER_DEVICE_TYPE_HEADPHONES, 59 | UPOWER_DEVICE_TYPE_VIDEO, 60 | UPOWER_DEVICE_TYPE_OTHER_AUDIO, 61 | UPOWER_DEVICE_TYPE_REMOTE_CONTROL, 62 | UPOWER_DEVICE_TYPE_PRINTER, 63 | UPOWER_DEVICE_TYPE_SCANNER, 64 | UPOWER_DEVICE_TYPE_CAMERA, 65 | UPOWER_DEVICE_TYPE_WEARABLE, 66 | UPOWER_DEVICE_TYPE_TOY, 67 | UPOWER_DEVICE_TYPE_BLUETOOTH_GENERIC, 68 | UPOWER_DEVICE_TYPE_LAST 69 | }; 70 | 71 | enum change_slot { 72 | SLOT_STATE = 0, 73 | SLOT_WARNING = 1, 74 | SLOT_ONLINE = 2, 75 | }; 76 | 77 | struct upower_device_props { 78 | int generation; 79 | int online; 80 | double percentage; 81 | enum upower_device_state state; 82 | enum upower_device_level warning_level; 83 | enum upower_device_level battery_level; 84 | }; 85 | 86 | struct upower_device { 87 | // Static properties 88 | char* path; 89 | char* native_path; 90 | char *model; 91 | int power_supply; 92 | enum upower_device_type type; 93 | 94 | // Monitored properties 95 | struct upower_device_props current; 96 | struct upower_device_props last; 97 | 98 | // Property notification 99 | uint32_t notifications[3]; 100 | 101 | // sd_bus notification slot 102 | sd_bus_slot *slot; 103 | }; 104 | 105 | struct upower { 106 | list_t *devices; 107 | list_t *removed_devices; 108 | sd_bus *bus; 109 | }; 110 | 111 | int upower_device_has_battery(struct upower_device *device); 112 | char* upower_device_state_string(struct upower_device *device); 113 | char* upower_device_warning_level_string(struct upower_device *device); 114 | char* upower_device_battery_level_string(struct upower_device *device); 115 | char* upower_device_type_string(struct upower_device *device); 116 | int upower_device_type_int(char *device); 117 | void upower_device_destroy(struct upower_device *device); 118 | 119 | int init_upower(sd_bus *bus, struct upower *state); 120 | void destroy_upower(sd_bus *bus, struct upower *state); 121 | 122 | #endif 123 | --------------------------------------------------------------------------------