From 565536e67385e7337e1a7d67c80499216d645882 Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Thu, 03 Apr 2025 16:32:45 +0800
Subject: [PATCH] Automatically deploy and run git2d

---
 config.go       |  5 +++--
 forge.scfg      |  3 +++
 git2d_deploy.go | 29 +++++++++++++++++++++++++++++
 main.go         | 12 ++++++++++++

diff --git a/config.go b/config.go
index 822f58bc6b9ebb2b8d17c8cc8503d1bebb55a33d..f0dcad55276384007321fb3edc217ac6fa7271d9 100644
--- a/config.go
+++ b/config.go
@@ -39,8 +39,9 @@ 		WriteTimeout uint32 `scfg:"write_timeout"`
 		ReadTimeout  uint32 `scfg:"read_timeout"`
 	} `scfg:"lmtp"`
 	Git struct {
-		RepoDir string `scfg:"repo_dir"`
-		Socket  string `scfg:"socket"`
+		RepoDir    string `scfg:"repo_dir"`
+		Socket     string `scfg:"socket"`
+		DaemonPath string `scfg:"daemon_path"`
 	} `scfg:"git"`
 	SSH struct {
 		Net  string `scfg:"net"`
diff --git a/forge.scfg b/forge.scfg
index 451643ae3f7dfc3c7e0cf94898f3caaa8b59700d..faeb1e1ed7ae3f76196a48fdad328902a3972f41 100644
--- a/forge.scfg
+++ b/forge.scfg
@@ -42,6 +42,9 @@ 	repo_dir /var/lib/lindenii/forge/repos
 
 	# Where should git2d listen on?
 	socket /var/run/lindenii/forge/git2d.sock
+
+	# Where should we put git2d?
+	daemon_path /usr/libexec/lindenii/forge/git2d
 }
 
 ssh {
diff --git a/git2d_deploy.go b/git2d_deploy.go
new file mode 100644
index 0000000000000000000000000000000000000000..09332a8d438cefa0f75fc4337bcb89adf265ff4b
--- /dev/null
+++ b/git2d_deploy.go
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+
+package main
+
+import (
+	"io"
+	"io/fs"
+	"os"
+)
+
+func deployGit2D() (err error) {
+	var srcFD fs.File
+	var dstFD *os.File
+
+	if srcFD, err = resourcesFS.Open("git2d/git2d"); err != nil {
+		return err
+	}
+	defer srcFD.Close()
+
+	if dstFD, err = os.OpenFile(config.Git.DaemonPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o755); err != nil {
+		return err
+	}
+	defer dstFD.Close()
+
+	_, err = io.Copy(dstFD, srcFD)
+
+	return err
+}
diff --git a/main.go b/main.go
index 75e187fcfe1b31b585e932eb194749e3f3c1cc9e..84458cbcb4ef27a540fee2b4e68ec6fe561a1e1a 100644
--- a/main.go
+++ b/main.go
@@ -8,6 +8,7 @@ 	"errors"
 	"flag"
 	"net"
 	"net/http"
+	"os/exec"
 	"syscall"
 	"time"
 
@@ -31,6 +32,17 @@ 	}
 	if err := loadTemplates(); err != nil {
 		clog.Fatal(1, "Loading templates: "+err.Error())
 	}
+	if err := deployGit2D(); err != nil {
+		clog.Fatal(1, "Deploying git2d: "+err.Error())
+	}
+
+	// Launch Git2D
+	go func() {
+		cmd := exec.Command(config.Git.DaemonPath, config.Git.Socket) //#nosec G204
+		if err := cmd.Run(); err != nil {
+			panic(err)
+		}
+	}()
 
 	// UNIX socket listener for hooks
 	{

-- 
2.48.1