Initial commit - Copied from SXMO
This commit is contained in:
Jonathan Hodgson
commit
9186be2ac2
4 changed files with 572 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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screenlock
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11
Makefile
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11
Makefile
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PREFIX = /usr/local
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.PHONY: install
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screenlock: screenlock.c
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gcc -o screenlock screenlock.c -lX11
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install: screenlock
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mkdir -p $(PREFIX)/bin
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cp -f screenlock $(PREFIX)/bin/screenlock
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chmod 755 $(PREFIX)/bin/screenlock
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10
README.md
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10
README.md
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@ -0,0 +1,10 @@
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# Pinephone screenlock
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Currently, this is simply a carbon copy of the screenlock developed for sxmo
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<https://git.sr.ht/~mil/sxmo-utils/tree/master/item/programs/sxmo_screenlock.c>
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This is MIT licensed.
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I created the repo because I expect to change some things in the future. I also
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didn't want to download the whole sxmo utils package onto my pinephone
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550
screenlock.c
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550
screenlock.c
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include <time.h>
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#include <X11/keysym.h>
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#include <X11/XF86keysym.h>
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#include <X11/XKBlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <linux/rtc.h>
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// Types
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enum State {
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StateNoInput, // Screen on / input lock
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StateNoInputNoScreen, // Screen off / input lock
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StateSuspend, // Deep sleep
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StateSuspendPending, // Suspend 'woken up', must leave state in <5s, or kicks to StateSuspend
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StateDead // Exit the appliation
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};
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enum Color {
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Red,
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Blue,
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Purple,
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Off
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};
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// Fn declarations
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int checkrtcwake();
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void configuresuspendsettingsandwakeupsources();
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time_t convert_rtc_time(struct rtc_time * rtc);
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void die(const char *err, ...);
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int getoldbrightness();
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void init_rtc();
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void lockscreen(Display *dpy, int screen, int blank);
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void unblankscreen();
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void blankscreen();
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void readinputloop(Display *dpy, int screen);
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int presuspend();
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void postwake();
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void setpineled(enum Color c);
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int setup_rtc_wakeup();
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void sigterm();
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void syncstate();
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void usage();
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void writefile(char *filepath, char *str);
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// Variables
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Display *dpy;
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Window root;
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enum State state = StateNoInput;
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int suspendtimeouts = 35;
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int suspendpendingsceenon = 0;
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int suspendpendingtimeouts = 0;
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KeySym lastkeysym = XK_Cancel;
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int lastkeyn = 0;
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char oldbrightness[10] = "200";
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char * brightnessfile = "/sys/devices/platform/backlight/backlight/backlight/brightness";
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char * powerstatefile = "/sys/power/state";
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int rtc_fd = 0; //file descriptor
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time_t wakeinterval = 0; //wake every x seconds
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time_t waketime = 0; //next wakeup time according to the RTC clock
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int slept = 0; //indicates whether the process has slept (crust) or not
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int blanked = 0; //indicated whether the display blanked or not
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#define RTC_DEVICE "/dev/rtc0"
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time_t
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convert_rtc_time(struct rtc_time * rtc) {
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struct tm tm;
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memset(&tm, 0, sizeof tm);
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tm.tm_sec = rtc->tm_sec;
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tm.tm_min = rtc->tm_min;
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tm.tm_hour = rtc->tm_hour;
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tm.tm_mday = rtc->tm_mday;
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tm.tm_mon = rtc->tm_mon;
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tm.tm_year = rtc->tm_year;
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tm.tm_isdst = -1; /* assume the system knows better than the RTC */
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return mktime(&tm);
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}
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int setup_rtc_wakeup() {
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//(code adapted from util-linux's rtcwake)
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struct tm *tm;
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struct rtc_wkalrm wake;
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struct rtc_time now_rtc;
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if (ioctl(rtc_fd, RTC_RD_TIME, &now_rtc) < 0) {
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fprintf(stderr, "Error reading rtc time\n");
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}
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const time_t now = convert_rtc_time(&now_rtc);
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waketime = now + wakeinterval;
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tm = localtime(&waketime);
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wake.time.tm_sec = tm->tm_sec;
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wake.time.tm_min = tm->tm_min;
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wake.time.tm_hour = tm->tm_hour;
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wake.time.tm_mday = tm->tm_mday;
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wake.time.tm_mon = tm->tm_mon;
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wake.time.tm_year = tm->tm_year;
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/* wday, yday, and isdst fields are unused by Linux */
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wake.time.tm_wday = -1;
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wake.time.tm_yday = -1;
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wake.time.tm_isdst = -1;
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fprintf(stderr, "Setting RTC wakeup to %ld: (UTC) %s", waketime, asctime(tm));
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if (ioctl(rtc_fd, RTC_ALM_SET, &wake.time) < 0) {
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fprintf(stderr, "error setting rtc alarm\n");
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return -1;
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}
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if (ioctl(rtc_fd, RTC_AIE_ON, 0) < 0) {
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fprintf(stderr, "error enabling rtc alarm\n");
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return -1;
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}
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return 0;
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}
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void
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configuresuspendsettingsandwakeupsources()
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{
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// Disable all wakeup sources
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struct dirent *wakeupsource;
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char wakeuppath[100];
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DIR *wakeupsources = opendir("/sys/class/wakeup");
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if (wakeupsources == NULL)
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die("Couldn't open directory /sys/class/wakeup\n");
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while ((wakeupsource = readdir(wakeupsources)) != NULL) {
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sprintf(
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wakeuppath,
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"/sys/class/wakeup/%.50s/device/power/wakeup",
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wakeupsource->d_name
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);
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fprintf(stderr, "Disabling wakeup source: %s", wakeupsource->d_name);
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writefile(wakeuppath, "disabled");
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fprintf(stderr, ".. ok\n");
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}
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closedir(wakeupsources);
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// Enable powerbutton wakeup source
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fprintf(stderr, "Enable powerbutton wakeup source\n");
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writefile(
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"/sys/devices/platform/soc/1f03400.rsb/sunxi-rsb-3a3/axp221-pek/power/wakeup",
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"enabled"
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);
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// Enable IRQ wakeup source (incoming call) 5.10
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fprintf(stderr, "Enable 5.10 IRQ wakeup source\n");
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writefile(
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"/sys/devices/platform/gpio-keys/power/wakeup",
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"enabled"
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);
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// Enable IRQ wakeup source (incoming call) 5.9 (no longer exists in 5.10)
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fprintf(stderr, "Enable 5.9 IRQ wakeup source\n");
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writefile(
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"/sys/devices/platform/soc/1c28c00.serial/serial1/serial1-0/power/wakeup",
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"enabled"
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);
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// Enable rtc wakeup source
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fprintf(stderr, "Enable rtc wakeup source\n");
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writefile(
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"/sys/devices/platform/soc/1f00000.rtc/power/wakeup",
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"enabled"
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);
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//set RTC wake
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if (wakeinterval > 0) setup_rtc_wakeup();
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// E.g. make sure we're using CRUST
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fprintf(stderr, "Flip mem_sleep setting to use crust\n");
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writefile("/sys/power/mem_sleep", "deep");
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}
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void
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die(const char *err, ...)
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{
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fprintf(stderr, "Screenlock error: %s\n", err);
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state = StateDead;
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syncstate();
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exit(1);
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}
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void
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sigterm()
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{
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state = StateDead;
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syncstate();
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if (wakeinterval) close(rtc_fd);
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fprintf(stderr, "Screenlock terminating on signal\n");
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exit(0);
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}
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int
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getoldbrightness() {
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char * buffer = 0;
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long length;
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FILE * f = fopen(brightnessfile, "r");
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if (f) {
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fseek(f, 0, SEEK_END);
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length = ftell(f);
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fseek(f, 0, SEEK_SET);
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buffer = malloc(length);
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if (buffer) {
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fread(buffer, 1, length, f);
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}
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fclose(f);
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}
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if (buffer) {
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sprintf(oldbrightness, "%d", atoi(buffer));
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}
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}
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void
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lockscreen(Display *dpy, int screen, int blank)
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{
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// Loosely derived from suckless' slock's lockscreen binding logic but
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// alot more coarse, intentionally so can be triggered while grab_key
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// for dwm multikey path already holding..
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int i, ptgrab, kbgrab;
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root = RootWindow(dpy, screen);
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if (blank == 1) {
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blankscreen();
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}
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for (i = 0, ptgrab = kbgrab = -1; i < 9999999; i++) {
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if (ptgrab != GrabSuccess) {
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ptgrab = XGrabPointer(dpy, root, False,
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ButtonPressMask | ButtonReleaseMask |
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PointerMotionMask, GrabModeAsync,
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GrabModeAsync, None, None, CurrentTime);
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}
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if (kbgrab != GrabSuccess) {
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kbgrab = XGrabKeyboard(dpy, root, True,
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GrabModeAsync, GrabModeAsync, CurrentTime);
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}
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if (ptgrab == GrabSuccess && kbgrab == GrabSuccess) {
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XSelectInput(dpy, root, SubstructureNotifyMask);
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return;
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}
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usleep(100000);
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}
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}
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void
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blankscreen()
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{
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if (!blanked) {
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system("xset dpms force off");
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blanked = 1;
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}
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}
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void
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unblankscreen()
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{
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if (blanked) {
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system("xset dpms force on");
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blanked = 0;
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}
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}
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void
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readinputloop(Display *dpy, int screen) {
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KeySym keysym;
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XEvent ev;
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char buf[32];
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fd_set fdset;
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int xfd;
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int selectresult;
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struct timeval xeventtimeout = {1, 0};
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xfd = ConnectionNumber(dpy);
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for (;;) {
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FD_ZERO(&fdset);
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FD_SET(xfd, &fdset);
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if (state == StateSuspendPending)
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selectresult = select(FD_SETSIZE, &fdset, NULL, NULL, &xeventtimeout);
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else
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selectresult = select(FD_SETSIZE, &fdset, NULL, NULL, NULL);
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if (FD_ISSET(xfd, &fdset) && XPending(dpy)) {
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XNextEvent(dpy, &ev);
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if (ev.type == KeyRelease) {
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XLookupString(&ev.xkey, buf, sizeof(buf), &keysym, 0);
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if (lastkeysym == keysym) {
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lastkeyn++;
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} else {
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lastkeysym = keysym;
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lastkeyn = 1;
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}
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if (lastkeyn < 3)
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continue;
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lastkeyn = 0;
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lastkeysym = XK_Cancel;
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if (slept) postwake();
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switch (keysym) {
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case XF86XK_AudioRaiseVolume:
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suspendpendingsceenon = state == StateNoInput;
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suspendpendingtimeouts = 0;
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state = StateSuspend;
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break;
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case XF86XK_AudioLowerVolume:
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if (state == StateNoInput) state = StateNoInputNoScreen;
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else if (state == StateNoInputNoScreen) state = StateNoInput;
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else if (state == StateSuspendPending && suspendpendingsceenon) state = StateNoInputNoScreen;
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else state = StateNoInput;
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break;
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case XF86XK_PowerOff:
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waketime = 0;
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state = StateDead;
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break;
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}
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syncstate();
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}
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} else if (state == StateSuspendPending) {
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suspendpendingtimeouts++;
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// # E.g. after suspendtimeouts seconds kick back into suspend
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if (suspendpendingtimeouts > suspendtimeouts) state = StateSuspend;
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syncstate();
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}
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if (state == StateDead) break;
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}
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}
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void
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setpineled(enum Color c)
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{
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if (c == Red) {
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writefile("/sys/class/leds/red:indicator/brightness", "1");
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writefile("/sys/class/leds/blue:indicator/brightness", "0");
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} else if (c == Blue) {
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writefile("/sys/class/leds/red:indicator/brightness", "0");
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writefile("/sys/class/leds/blue:indicator/brightness", "1");
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} else if (c == Purple) {
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writefile("/sys/class/leds/red:indicator/brightness", "1");
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writefile("/sys/class/leds/blue:indicator/brightness", "1");
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} else if (c == Off) {
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writefile("/sys/class/leds/red:indicator/brightness", "0");
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writefile("/sys/class/leds/blue:indicator/brightness", "0");
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}
|
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}
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|
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int
|
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presuspend() {
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//called prior to suspension, a non-zero return value cancels suspension
|
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return system("sxmo_presuspend.sh");
|
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}
|
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|
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void
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postwake() {
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//called after fully waking up (not used for temporary rtc wakeups)
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system("sxmo_postwake.sh");
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slept = 0;
|
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}
|
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|
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int
|
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checkrtcwake()
|
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{
|
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struct rtc_time now;
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if (ioctl(rtc_fd, RTC_RD_TIME, &now) < 0) {
|
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fprintf(stderr, "Error reading rtc time\n");
|
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return -1;
|
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}
|
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|
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const long int timediff = convert_rtc_time(&now) - waketime;
|
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fprintf(stderr, "Checking rtc wake? timediff=%ld\n", timediff);
|
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if (timediff >= 0 && timediff <= 3) {
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fprintf(stderr, "Calling RTC wake script\n");
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setpineled(Blue);
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return system("sxmo_rtcwake.sh");
|
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}
|
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return 0;
|
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}
|
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|
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void
|
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syncstate()
|
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{
|
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int rtcresult;
|
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if (state == StateSuspend) {
|
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if (presuspend() != 0) {
|
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state = StateDead;
|
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} else {
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fprintf(stderr, "Screenlock entering suspend state (pred mode)\n");
|
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writefile(brightnessfile, "0");
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blankscreen();
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slept = 1;
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setpineled(Red);
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configuresuspendsettingsandwakeupsources();
|
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writefile(powerstatefile, "mem");
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//---- program blocks here due to sleep ----- //
|
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// Just woke up again
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fprintf(stderr, "Screenlock woke up\n");
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fprintf(stderr, "Resetting usb connection to the modem\n");
|
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writefile("/sys/bus/usb/drivers/usb/unbind", "3-1");
|
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writefile("/sys/bus/usb/drivers/usb/bind", "3-1");
|
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fprintf(stderr, "Lower scan interval for quicker reconnection to wireless network\n");
|
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writefile("/sys/module/8723cs/parameters/rtw_scan_interval_thr", "1200"); //ms
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//^-- this will be undone again by a networkmanager hook after connection has been established
|
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// or by a delayed script if no connection can be established after a while (to conserve battery)
|
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if (waketime > 0) {
|
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rtcresult = checkrtcwake();
|
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} else {
|
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rtcresult = 0;
|
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}
|
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if (rtcresult == 0) {
|
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state = StateSuspendPending;
|
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suspendpendingtimeouts = 0;
|
||||
} else {
|
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postwake();
|
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state = StateDead;
|
||||
}
|
||||
}
|
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syncstate();
|
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} else if (state == StateNoInput) {
|
||||
fprintf(stderr, "Screenlock in no Input state (blue mode)\n");
|
||||
setpineled(Blue);
|
||||
unblankscreen();
|
||||
writefile(brightnessfile, oldbrightness);
|
||||
} else if (state == StateNoInputNoScreen) {
|
||||
fprintf(stderr, "Screenlock in no screen state (purple mode)\n");
|
||||
setpineled(Purple);
|
||||
writefile(brightnessfile, "0");
|
||||
blankscreen();
|
||||
} else if (state == StateSuspendPending) {
|
||||
fprintf(stderr, "Screenlock is pending suspension\n");
|
||||
if (suspendpendingsceenon) unblankscreen();
|
||||
writefile(brightnessfile, suspendpendingsceenon ? oldbrightness : "0");
|
||||
if (!suspendpendingsceenon) blankscreen();
|
||||
setpineled(Off);
|
||||
usleep(1000 * 100);
|
||||
setpineled(suspendpendingsceenon ? Blue : Purple);
|
||||
} else if (state == StateDead) {
|
||||
unblankscreen();
|
||||
writefile(brightnessfile, oldbrightness);
|
||||
setpineled(Off);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
void
|
||||
writefile(char *filepath, char *str)
|
||||
{
|
||||
int f;
|
||||
f = open(filepath, O_WRONLY);
|
||||
if (f != -1) {
|
||||
write(f, str, strlen(str));
|
||||
close(f);
|
||||
} else {
|
||||
fprintf(stderr, "Couldn't open filepath <%s>\n", filepath);
|
||||
}
|
||||
}
|
||||
|
||||
void usage() {
|
||||
fprintf(stderr, "Usage: sxmo_screenlock [--screen-off] [--suspend] [--wake-interval n] [--setuid]\n");
|
||||
}
|
||||
|
||||
|
||||
void init_rtc() {
|
||||
rtc_fd = open(RTC_DEVICE, O_RDONLY);
|
||||
if (rtc_fd < 0) {
|
||||
die("Unable to open rtc device");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv) {
|
||||
int screen;
|
||||
int i;
|
||||
enum State target = StateNoInput;
|
||||
|
||||
signal(SIGTERM, sigterm);
|
||||
|
||||
const char* suspendtimeouts_str = getenv("SXMO_SUSPENDTIMEOUTS");
|
||||
if (suspendtimeouts_str != NULL) suspendtimeouts = atoi(suspendtimeouts_str);
|
||||
|
||||
const char* rtcwakeinterval = getenv("SXMO_RTCWAKEINTERVAL");
|
||||
if (rtcwakeinterval != NULL) wakeinterval = atoi(rtcwakeinterval);
|
||||
|
||||
const char* screen_off = getenv("SXMO_LOCK_SCREEN_OFF");
|
||||
if (screen_off != NULL && atoi(screen_off)) target = StateNoInputNoScreen;
|
||||
|
||||
const char* suspend = getenv("SXMO_LOCK_SUSPEND");
|
||||
if (suspend != NULL && atoi(suspend)) target = StateSuspend;
|
||||
|
||||
//parse command line arguments
|
||||
for (i = 1; i < argc; i++) {
|
||||
if(!strcmp(argv[i], "-h")) {
|
||||
usage();
|
||||
return 0;
|
||||
} else if(!strcmp(argv[i], "--screen-off")) {
|
||||
target = StateNoInputNoScreen;
|
||||
} else if(!strcmp(argv[i], "--suspend")) {
|
||||
target = StateSuspend;
|
||||
} else if(!strcmp(argv[i], "--wake-interval")) {
|
||||
wakeinterval = (time_t) atoi(argv[++i]);
|
||||
} else if(!strcmp(argv[i], "--setuid")) {
|
||||
if (setuid(0))
|
||||
die("setuid(0) failed");
|
||||
} else {
|
||||
fprintf(stderr, "Invalid argument: %s\n", argv[i]);
|
||||
return 2;
|
||||
}
|
||||
}
|
||||
|
||||
if (!(dpy = XOpenDisplay(NULL)))
|
||||
die("Cannot open display");
|
||||
|
||||
if (wakeinterval) init_rtc();
|
||||
|
||||
fprintf(stderr, "Screenlock starting\n");
|
||||
|
||||
XkbSetDetectableAutoRepeat(dpy, True, NULL);
|
||||
screen = XDefaultScreen(dpy);
|
||||
XSync(dpy, 0);
|
||||
getoldbrightness();
|
||||
syncstate();
|
||||
lockscreen(dpy, screen, target == StateNoInputNoScreen || target == StateSuspend);
|
||||
if ((target == StateNoInputNoScreen) || (target == StateSuspend)) {
|
||||
state = StateNoInputNoScreen;
|
||||
syncstate();
|
||||
}
|
||||
if (target == StateSuspend) {
|
||||
state = StateSuspend;
|
||||
syncstate();
|
||||
}
|
||||
readinputloop(dpy, screen);
|
||||
if (wakeinterval) {
|
||||
ioctl(rtc_fd, RTC_AIE_OFF, 0);
|
||||
close(rtc_fd);
|
||||
}
|
||||
fprintf(stderr, "Screenlock terminating normally\n");
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue