5 files changed, 344 insertions, 0 deletions
diff --git a/linux-bin/.gitignore b/linux-bin/.gitignore
new file mode 100644
index 0000000..4711d71
--- /dev/null
+++ b/linux-bin/.gitignore
@@ -0,0 +1,2 @@
+zzz
+backlight
diff --git a/linux-bin/Makefile b/linux-bin/Makefile
new file mode 100644
index 0000000..eb1db92
--- /dev/null
+++ b/linux-bin/Makefile
@@ -0,0 +1,16 @@
+WHEEL ?= wheel
+
+default: zzz backlight
+
+install-zzz: zzz
+	install -D -o root -g $(WHEEL) -m 755 zzz /sbin/
+	chmod 6750 /sbin/zzz
+
+install-backlight: backlight
+	install -D -o root -g $(WHEEL) -m 755 backlight /sbin/
+	chmod 6750 /sbin/backlight
+
+install: install-zzz install-backlight
+
+clean:
+	rm -f zzz backlight
diff --git a/linux-bin/backlight.c b/linux-bin/backlight.c
new file mode 100644
index 0000000..497fd72
--- /dev/null
+++ b/linux-bin/backlight.c
@@ -0,0 +1,176 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+#define BACKLIGHT_DIR "/sys/class/backlight"
+
+void
+die(const char *msg)
+{
+	puts(msg);
+	exit(1);
+}
+
+void
+err(const char *msg)
+{
+	perror(msg);
+	exit(1);
+}
+
+void*
+ecalloc(size_t nmemb, size_t size)
+{
+	void *ret = calloc(nmemb, size);
+	if (!ret)
+		err("ecalloc");
+	return ret;
+}
+
+char*
+appendStr(size_t len, const char *a, const char *b)
+{
+	char *buf = ecalloc(len, sizeof(char));
+	int ret = snprintf(buf, len, "%s%s", a, b);
+	if (ret == -1 || ret > len)
+		err("snprintf");
+	return buf;
+}
+
+/* returns errno */
+int
+maxBrightness(const char *prefix, long *max)
+{
+	int e;
+	char *buf = appendStr(256, prefix, "/max_brightness");
+
+	int fd = open(buf, O_RDONLY);
+	if (fd == -1) {
+		e = errno;
+		free(buf);
+		return e;
+	}
+
+	memset(buf, '\0', 256);
+
+	int b = read(fd, buf, 256);
+	if (b==-1) {
+		e = errno;
+		free(buf);
+		close(fd);
+		return e;
+	}
+
+	for (int i=0; i<256 ; i++) {
+		if (buf[i] == '\n') {
+			buf[i] = '\0';
+			break;
+		}
+	}
+
+	long n = strtol(buf, NULL, 10);
+	if (n == LONG_MIN || n == LONG_MAX || n == 0)
+		err("strtol");
+
+	free(buf);
+	buf = NULL;
+	close(fd);
+	*max = n;
+
+	return 0;
+}
+
+int
+setBacklight(const char *prefix, int percent)
+{
+	char *fn = appendStr(256, prefix, "/brightness");
+
+	int fd = open(fn, O_WRONLY);
+	if (fd == -1) {
+		free(fn);
+		return -1;
+	}
+
+	int n = dprintf(fd, "%d\n", percent);
+	if (n == -1) {
+		close(fd);
+		free(fn);
+		return -1;
+	}
+	
+	close(fd);
+	free(fn);
+	fn = NULL;
+
+	return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+	uid_t euid = geteuid();
+	char **a = argv+1;
+
+	if (euid != 0)
+		die("Program must be run as root/setuid");
+
+	if (!*a)
+		die("Brightness percentage must be supplied");
+
+
+	long percent = strtol(*a, NULL, 10);
+	if (percent <= LONG_MIN || percent >= LONG_MAX)
+		err("invalid percent");
+	if (percent < 0 || percent > 100)
+		die("percent must be between 0 and 100");
+
+	DIR *d = opendir(BACKLIGHT_DIR);
+	if (!d)
+		err("opendir");
+
+	errno = 0;
+	for (;;) {
+		struct dirent *dent = readdir(d);
+		if(!dent&&errno!=0)
+			err("readdir");
+
+		if (!dent)
+			break;
+
+		if (strcmp("..", dent->d_name)==0 || strcmp(".", dent->d_name)==0)
+			continue;
+
+		char *prefix = appendStr(1024, BACKLIGHT_DIR"/", dent->d_name);
+
+		printf("found backlight: %s\n", prefix);
+	
+		int ret;
+		long max = 0;
+		ret = maxBrightness(prefix, &max);
+		if (ret != 0) {
+			const char *msg = strerror(ret);
+			printf("Error getting max brightness for: %s : %s\n",
+					prefix, msg);
+			free(prefix);
+			prefix = NULL;
+			continue;
+		}
+
+		float p = (double)max*((double)percent/100.0);
+
+		ret = setBacklight(prefix, (int)p);
+		if (ret != 0) {
+			perror("setBacklight");
+		}
+
+		free(prefix);
+		prefix = NULL;
+	}
+}
diff --git a/linux-bin/wpa b/linux-bin/wpa
new file mode 100755
index 0000000..0ffbc14
--- /dev/null
+++ b/linux-bin/wpa
@@ -0,0 +1,60 @@
+#!/bin/sh
+set -e
+# manual configuration of wifi made a little bit easier with wpa_supplicant
+session="wpa"
+t=3
+interface=
+nwid=
+wpakey=
+
+help() {
+cat <<EOF
+$0 [-i <interface>] [-n <network_name>] [-p <password>]
+EOF
+exit 1;
+}
+
+while [ $# -gt 0 ] ; do case $1 in
+	-i|if) interface="$2"; shift ; shift ;;
+	-n|nwid) nwid="$2"; shift ; shift ;;
+	-p|wpakey) wpakey="$2"; shift ; shift ;;
+	*) help ;;
+esac ; done
+
+err=0
+for _v in interface nwid wpakey ; do
+	eval v="\$$_v";
+	if [ -z "$v" ] ; then
+		echo "$_v cannot be empty"
+		err=1
+	fi
+done
+if [ $err -eq 1 ] ; then exit 1 ; fi
+
+
+wpakey="$(echo "$wpakey" | sed -e's/"/\\"/g')"
+
+conf_f="$(mktemp /dev/shm/wpa.XXXX)"
+trap 'rm -f $conf_f; exit 1;' EXIT INT
+cat > "$conf_f" <<EOF
+network={
+	ssid="$nwid"
+	scan_ssid=1
+	key_mgmt=WPA-PSK
+	psk="$wpakey"
+}
+EOF
+
+
+if tmux ls -F '#{session_name}' | grep -q "^$session\$" ; then
+	exec tmux att -t "$session"
+fi
+
+tmux new-session -s "$session" \;\
+	send-keys -t "${session}:0" "sudo wpa_supplicant -i \"$interface\" -c \"$conf_f\"" \;\
+	send-keys -t "${session}:0" Enter \;\
+	new-window -n "dhclient" -t 1 \;\
+	send-keys -t "${session}:1" "sleep $t ; sudo dhclient -d -i \"$interface\"" \;\
+	send-keys -t "${session}:1" Enter \;\
+	select-window -t "${session}:0" \;\
+
diff --git a/linux-bin/zzz.c b/linux-bin/zzz.c
new file mode 100644
index 0000000..8bc3c22
--- /dev/null
+++ b/linux-bin/zzz.c
@@ -0,0 +1,90 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+
+#define POWER_STATE_F "/sys/power/state"
+
+void
+die(const char *msg)
+{
+	puts(msg);
+	exit(1);
+}
+
+void
+err(const char *msg)
+{
+	perror(msg);
+	exit(1);
+}
+
+void
+suspend()
+{
+	int fh = open(POWER_STATE_F, O_WRONLY);
+	int n;
+	const char *cmd = "mem";
+
+	if (fh == -1)
+		err("Opening "POWER_STATE_F);
+
+	n = write(fh, cmd, 3);
+	if (n == -1)
+		err("Writing to "POWER_STATE_F);
+	
+	exit(0);
+}
+
+int
+main(int argc, char **argv)
+{
+	uid_t uid = getuid();
+	gid_t gid = getgid();
+	uid_t euid = geteuid();
+	char **a = argv+1;
+	char *lockProg = "slock";
+	char *lockProgWl= "swaylock";
+	pid_t pid;
+	int ret;
+
+	if (euid != 0)
+		die("Program must be run as root/setuid");
+
+	if (strcmp("wayland", getenv("XDG_SESSION_TYPE")) == 0)
+		lockProg = lockProgWl;
+
+	for (;*a;a++) {
+		if (strcmp("-l", *a) == 0) {
+			a++;
+			if (*a)
+				lockProg = *a;
+			else
+				die("-l must have an argument");
+		} else {
+			printf("Unknown argument: '%s'\n", *a);
+			exit(1);
+		}
+	}
+
+	pid = fork();
+	switch (pid) {
+	case -1:
+		err("fork");
+	case 0:
+		ret = setuid(uid);
+		if (ret == -1)
+			err("setuid");
+		ret = setgid(gid);
+		if (ret == -1)
+			err("setgid");
+
+		execlp(lockProg, NULL);
+		err("execlp");
+	default:
+		suspend();
+	}
+
+}