From 0ae61d23ba743858fe4e99cfda6578b5cfc39bee Mon Sep 17 00:00:00 2001
From: eleksir <eleksir@exs-elm.ru>
Date: Sun, 25 Aug 2019 21:47:29 +0300
Subject: [PATCH] Add replacement for runit' sv binary

---
 svc      | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 svc.json |   5 +++
 2 files changed, 106 insertions(+)
 create mode 100644 svc
 create mode 100644 svc.json

diff --git a/svc b/svc
new file mode 100644
index 0000000..f6e8332
--- /dev/null
+++ b/svc
@@ -0,0 +1,101 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings "all";
+use JSON::PP;
+
+sub help;
+sub ctrl ($);
+sub status;
+
+my $sep = $/;
+$/ = '';
+
+open (CONF, "$ENV{HOME}/.local/etc/svc.json") or die "No config at $ENV{HOME}/.local/etc/svc.json\n";
+
+my $c = <CONF>;
+close CONF;
+$/ = $sep;
+
+$c = decode_json($c);
+
+if ($c->{mode} eq 'user') {
+	die "\$HOME is no set\n" unless (defined($ENV{HOME}));
+	die "$ENV{HOME} does not exist" unless (-d $ENV{HOME});
+	chdir $ENV{HOME};
+	die "No such directory $ENV{HOME}$c->{dir}\n" unless(-d "$ENV{HOME}$c->{dir}");
+	chdir "$ENV{HOME}$c->{dir}";
+} else {
+	die "No such directory $c->{dir}" unless(-d $c->{dir});
+	chdir $c->{dir};
+}
+
+help unless (defined($ARGV[0]) || defined($ARGV[1]));
+
+if ((-l "./$ARGV[0]") || (-d "./$ARGV[0]")) {
+	chdir "./$ARGV[0]";
+	die "Is service running?\n" unless (-d './supervise');
+	chdir './supervise';
+
+	if ($ARGV[1] eq 'start') {
+		die "Service $ARGV[0] already running.\n" if (status() eq 'run');
+		ctrl('u');
+	} elsif ($ARGV[1] eq 'restart') {
+		die "Service $ARGV[0] already stopped.\n" if (status() eq 'down');
+		ctrl('d');
+
+		for (my $cnt = 0; $cnt < $c->{timeout}; $cnt++) {
+			if (status() eq 'down') {
+				last;
+			}
+
+			sleep 1;
+		}
+
+		ctrl('k') if (status() ne 'down');
+		sleep 1;
+		ctrl('u');
+	} elsif ($ARGV[1] eq 'stop') {
+		die "Service $ARGV[0] already stopped.\n" if (status() eq 'down');
+		ctrl('d');
+
+		for (my $cnt = 0; $cnt < $c->{timeout}; $cnt++) {
+			if (status() eq 'down') {
+				last;
+			}
+
+			sleep 1;
+		}
+
+		ctrl('k') if (status() ne 'down');
+		sleep 1;
+	} elsif ($ARGV[1] eq 'status') {
+		print status() . "\n";
+	}
+} else {
+	die "No such service.\n";
+}
+
+exit 0;
+
+sub help {
+	print "Usage $0 SERVICE [start|stop|restart|status]\n";
+	exit 0;
+}
+
+sub ctrl ($) {
+	my $command = shift;
+	open (C, ">", "control") or die;
+	print C $command;
+	close C;
+}
+
+sub status {
+	open (S, "stat") or die;
+	my $status = <S>;
+	chomp($status);
+	close S;
+	return $status;
+}
+
+# vim: set ft=perl noet ai :
diff --git a/svc.json b/svc.json
new file mode 100644
index 0000000..9535917
--- /dev/null
+++ b/svc.json
@@ -0,0 +1,5 @@
+{
+	"mode": "user",
+	"dir": "/.local/etc/services",
+	"timeout": 3
+}