From 4a2aa14e68b5b6b1b3c09e0b923178c7c98a671c Mon Sep 17 00:00:00 2001
From: "Luke T. Shumaker" <lukeshu@lukeshu.com>
Date: Wed, 21 May 2025 17:43:52 -0400
Subject: Add a simple httpd

---
 INSTALL.sh                      |  2 +-
 Makefile                        |  2 +-
 bin-src/httpd.go                | 35 +++++++++++++++++++++++++++++++++++
 systemd/dashboard-httpd.service |  6 ++++++
 systemd/dashboard-httpd.socket  |  8 ++++++++
 5 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 bin-src/httpd.go
 create mode 100644 systemd/dashboard-httpd.service
 create mode 100644 systemd/dashboard-httpd.socket

diff --git a/INSTALL.sh b/INSTALL.sh
index b024596..364d98c 100755
--- a/INSTALL.sh
+++ b/INSTALL.sh
@@ -10,4 +10,4 @@ sudo pacman -S --needed -- \
 
 mkdir -p -- ~/.config/systemd/user/
 ln -srf -- ~/dashboard/systemd/* ~/.config/systemd/user/
-systemctl --user enable --now dashboard-daily.timer
+systemctl --user enable --now dashboard-daily.timer dashboard-httpd.socket
diff --git a/Makefile b/Makefile
index 4214f28..7ee6e91 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ outs = $(patsubst public-src/%,public/%,\
          $(srcs))))
 all: $(outs)
 all: public/3rd-party
-all: bin/cron-daily
+all: bin/cron-daily bin/httpd
 .PHONY: all
 
 NET-%:
diff --git a/bin-src/httpd.go b/bin-src/httpd.go
new file mode 100644
index 0000000..6b653bd
--- /dev/null
+++ b/bin-src/httpd.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+func mainWithError() error {
+	listenerFile := os.NewFile(uintptr(3), "listener")
+	if listenerFile == nil {
+		return errors.New("FD3 is not open")
+	}
+
+	listener, err := net.FileListener(listenerFile)
+	if err != nil {
+		return err
+	}
+
+	if err := os.Chdir(filepath.Dir(filepath.Dir(os.Args[0]))); err != nil {
+		return err
+	}
+
+	return http.Serve(listener, http.FileServer(http.Dir("public")))
+}
+
+func main() {
+	if err := mainWithError(); err != nil {
+		fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
+		os.Exit(1)
+	}
+}
diff --git a/systemd/dashboard-httpd.service b/systemd/dashboard-httpd.service
new file mode 100644
index 0000000..17d45fa
--- /dev/null
+++ b/systemd/dashboard-httpd.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Dashboard HTTP server
+Requires=dashboard-httpd.socket
+
+[Service]
+ExecStart=/bin/sh -c '~/dashboard/bin/httpd'
diff --git a/systemd/dashboard-httpd.socket b/systemd/dashboard-httpd.socket
new file mode 100644
index 0000000..e49aac4
--- /dev/null
+++ b/systemd/dashboard-httpd.socket
@@ -0,0 +1,8 @@
+[Unit]
+Description=Dashboard HTTP server
+
+[Socket]
+ListenStream=41198
+
+[Install]
+WantedBy=sockets.target
-- 
cgit v1.2.3-2-g168b