From 283c31564a9d5dab4b8b71d7498886b0cd20a999 Mon Sep 17 00:00:00 2001
From: Jan Wolff <janw@mailbox.org>
Date: Fri, 12 Sep 2025 09:34:01 +0200
Subject: initial commit

---
 controller/app.go                 | 39 +++++++++++++++++++
 controller/controller.go          |  8 ++++
 controller/file.go                | 79 +++++++++++++++++++++++++++++++++++++++
 controller/index.go               | 13 +++++++
 controller/template/404.html      |  7 ++++
 controller/template/base.html     | 49 ++++++++++++++++++++++++
 controller/template/index.html    | 28 ++++++++++++++
 controller/template/uploaded.html | 10 +++++
 8 files changed, 233 insertions(+)
 create mode 100644 controller/app.go
 create mode 100644 controller/controller.go
 create mode 100644 controller/file.go
 create mode 100644 controller/index.go
 create mode 100644 controller/template/404.html
 create mode 100644 controller/template/base.html
 create mode 100644 controller/template/index.html
 create mode 100644 controller/template/uploaded.html

(limited to 'controller')

diff --git a/controller/app.go b/controller/app.go
new file mode 100644
index 0000000..f145ce2
--- /dev/null
+++ b/controller/app.go
@@ -0,0 +1,39 @@
+package controller
+
+import (
+	"embed"
+	"html/template"
+	"net/http"
+
+	"drop.janw.name/config"
+	"drop.janw.name/storage"
+)
+
+//go:embed template/*
+var templateFs embed.FS
+
+type App struct {
+	storage *storage.Storage
+	tmpl    *template.Template
+	config  config.Configuration
+}
+
+func NewApp(configFilename string) *App {
+	return &App{
+		storage: storage.NewStorage(),
+		tmpl:    template.Must(template.ParseFS(templateFs, "template/*.html")),
+		config:  config.Must(config.Open(configFilename)),
+	}
+}
+
+func (app App) requireAuth(res http.ResponseWriter, req *http.Request) bool {
+	username, password, ok := req.BasicAuth()
+	if ok && username == app.config.Authentication.Username && password == app.config.Authentication.Password {
+		return true
+	}
+
+	res.Header().Add("WWW-Authenticate", "Basic realm=\"Authentication Required\", charset=\"UTF-8\"")
+	res.WriteHeader(http.StatusUnauthorized)
+
+	return false
+}
diff --git a/controller/controller.go b/controller/controller.go
new file mode 100644
index 0000000..1f28562
--- /dev/null
+++ b/controller/controller.go
@@ -0,0 +1,8 @@
+package controller
+
+import "net/http"
+
+type Controller struct {
+	GET  http.HandlerFunc
+	POST http.HandlerFunc
+}
diff --git a/controller/file.go b/controller/file.go
new file mode 100644
index 0000000..53121d5
--- /dev/null
+++ b/controller/file.go
@@ -0,0 +1,79 @@
+package controller
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"drop.janw.name/storage"
+)
+
+const MAX_FILESIZE = (1 << 19) * 100
+
+func (app App) FilePost(res http.ResponseWriter, req *http.Request) {
+	if !app.requireAuth(res, req) {
+		return
+	}
+
+	if err := req.ParseMultipartForm(MAX_FILESIZE); err != nil {
+		panic(err)
+	}
+
+	formFile, formFileHeader, err := req.FormFile("file")
+	if err != nil {
+		panic(err)
+	}
+
+	protected := req.FormValue("protect") == "on"
+
+	fileData, err := io.ReadAll(formFile)
+	if err != nil {
+		panic(err)
+	}
+
+	file := storage.File{
+		Protected:      protected,
+		Filename:       formFileHeader.Filename,
+		Data:           fileData,
+		AvailableUntil: time.Now().Add(time.Hour * 2),
+	}
+
+	key, err := app.storage.Put(file)
+	if err != nil {
+		panic(err)
+	}
+
+	app.tmpl.ExecuteTemplate(res, "uploaded", struct {
+		DownloadURL string
+	}{
+		DownloadURL: fmt.Sprintf("%s/%s", app.config.Http.BaseAddress, key),
+	})
+}
+
+func (app App) FileGet(res http.ResponseWriter, req *http.Request) {
+	fileId := req.PathValue("file")
+
+	file, _ := app.storage.Get(fileId)
+
+	if file == nil || !file.IsAvailable() {
+		if !app.requireAuth(res, req) {
+			return
+		}
+
+		res.WriteHeader(http.StatusNotFound)
+		app.tmpl.ExecuteTemplate(res, "404", nil)
+		return
+	}
+
+	if file.Protected && !app.requireAuth(res, req) {
+		return
+	}
+
+	res.Header().Add("Content-Type", "application/octet-stream")
+	res.Header().Add("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", file.Filename))
+
+	if _, err := res.Write(file.Data); err != nil {
+		panic(err)
+	}
+}
diff --git a/controller/index.go b/controller/index.go
new file mode 100644
index 0000000..6f927ed
--- /dev/null
+++ b/controller/index.go
@@ -0,0 +1,13 @@
+package controller
+
+import (
+	"net/http"
+)
+
+func (app App) Index(res http.ResponseWriter, req *http.Request) {
+	if !app.requireAuth(res, req) {
+		return
+	}
+
+	app.tmpl.ExecuteTemplate(res, "index", nil)
+}
diff --git a/controller/template/404.html b/controller/template/404.html
new file mode 100644
index 0000000..fa19547
--- /dev/null
+++ b/controller/template/404.html
@@ -0,0 +1,7 @@
+{{define "404"}}
+{{template "header" .}}
+<main>
+    <h1>no such file</h1>
+</main>
+{{template "footer" .}}
+{{end}}
diff --git a/controller/template/base.html b/controller/template/base.html
new file mode 100644
index 0000000..c91245d
--- /dev/null
+++ b/controller/template/base.html
@@ -0,0 +1,49 @@
+{{define "header"}}
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <title>drop.janw.name</title>
+        <meta charset="UTF-8">
+        <meta name="author" content="Jan Wolff">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
+        <link href="data:," rel="icon">
+        <style>
+            html, body {
+                padding: 0;
+                margin: 0;
+                width: 100%;
+                height: 100%;
+            }
+
+            body {
+                display: flex;
+                justify-content: center;
+                align-items: center;
+                background: #ebebeb;
+                font-family: sans-serif;
+            }
+
+            main {
+                padding: 2rem;
+                border-radius: 2rem;
+                background: #fefefe;
+            }
+
+            form {
+                display: flex;
+                flex-direction: column;
+                gap: 1rem;
+            }
+
+            progress {
+                width: 100%;
+            }
+        </style>
+    </head>
+    <body>
+{{end}}
+
+{{define "footer"}}
+    </body>
+</html>
+{{end}}
diff --git a/controller/template/index.html b/controller/template/index.html
new file mode 100644
index 0000000..f50be97
--- /dev/null
+++ b/controller/template/index.html
@@ -0,0 +1,28 @@
+{{define "index"}}
+{{template "header" .}}
+<main>
+    <h1>drop.janw.name</h1>
+    <form method="POST" action="/" enctype="multipart/form-data">
+        <div>
+            <label for="file">
+                File:
+            </label>
+            <input id="file" type="file" name="file">
+        </div>
+        <div>
+            <label for="protect">
+                Password Protect:
+            </label>
+            <input id="protect" type="checkbox" name="protect">
+        </div>
+        <div>
+            <label for="until">
+                Available Until:
+            </label>
+            <input id="until" type="datetime-local" name="until">
+        </div>
+        <input type="submit" id="upload" value="Upload">
+    </form>
+</main>
+{{template "footer" .}}
+{{end}}
diff --git a/controller/template/uploaded.html b/controller/template/uploaded.html
new file mode 100644
index 0000000..1324082
--- /dev/null
+++ b/controller/template/uploaded.html
@@ -0,0 +1,10 @@
+{{define "uploaded"}}
+{{template "header" .}}
+<main>
+    <h1>File uploaded successfully</h1>
+    <p>
+        <a href="{{.DownloadURL}}">{{.DownloadURL}}</a>
+    </p>
+</main>
+{{template "footer" .}}
+{{end}}
-- 
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