init

.air.toml

@@ -0,0 +1,50 @@
+root = "."
+tmp_dir = "tmp"
+
+[build]
+args_bin = ["--port", "4321"]
+bin = "./tmp/main"
+cmd = "go build -o ./tmp/main ."
+delay = 1000
+exclude_dir = ["tmp"]
+exclude_file = []
+exclude_regex = ["_test.go", "_templ.go"]
+exclude_unchanged = false
+follow_symlink = false
+full_bin = ""
+include_dir = [".", "public"]
+include_ext = ["go", "html", "css", "js"]
+include_file = ["main.go"]
+kill_delay = "1s"
+log = "build-errors.log"
+poll = false
+poll_interval = 0
+post_cmd = []
+pre_cmd = []
+rerun = false
+rerun_delay = 500
+send_interrupt = false
+stop_on_error = false
+
+[color]
+app = ""
+build = "yellow"
+main = "magenta"
+runner = "green"
+watcher = "cyan"
+
+[log]
+main_only = false
+time = false
+
+[misc]
+clean_on_exit = true
+
+[proxy]
+app_port = 8080
+enabled = false
+proxy_port = 4321
+
+[screen]
+clear_on_rebuild = false
+keep_scroll = true

.editorconfig

@@ -0,0 +1,23 @@
+# EditorConfig is awesome: https://EditorConfig.org
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[{Makefile,go.mod,go.sum,*.go,*.templ,.gitmodules}]
+charset = utf-8
+indent_style = tab
+tab_width = 4
+indent_size = 4
+
+[*.md]
+indent_size = 4
+trim_trailing_whitespace = false
+
+eclint_indent_style = unset
+
+[Dockerfile]
+indent_style = space
+indent_size = 4

.gitignore

@@ -0,0 +1,32 @@
+# OS
+.DS_Store
+Thumbs.db
+
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with 'go test -c'
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+go.work.sum
+
+# env file
+.env
+
+# Editor config
+**/.idea
+**/.vs
+**/.vscode
+**/.fleet

LICENSE

@@ -0,0 +1,7 @@
+Copyright 2024 Frank Mayer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -0,0 +1 @@
+# portal

go.mod

@@ -0,0 +1,22 @@
+module github.com/tsukinoko-kun/portal
+
+go 1.23.0
+
+require (
+	github.com/charmbracelet/log v0.4.0
+	github.com/gorilla/websocket v1.5.3
+)
+
+require (
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/charmbracelet/lipgloss v0.10.0 // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-isatty v0.0.18 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/muesli/reflow v0.3.0 // indirect
+	github.com/muesli/termenv v0.15.2 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
+	golang.org/x/sys v0.13.0 // indirect
+)

go.sum

@@ -0,0 +1,38 @@
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/charmbracelet/lipgloss v0.10.0 h1:KWeXFSexGcfahHX+54URiZGkBFazf70JNMtwg/AFW3s=
+github.com/charmbracelet/lipgloss v0.10.0/go.mod h1:Wig9DSfvANsxqkRsqj6x87irdy123SR4dOXlKa91ciE=
+github.com/charmbracelet/log v0.4.0 h1:G9bQAcx8rWA2T3pWvx7YtPTPwgqpk7D68BX21IRW8ZM=
+github.com/charmbracelet/log v0.4.0/go.mod h1:63bXt/djrizTec0l11H20t8FDSvA4CRZJ1KH22MdptM=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-logfmt/logfmt v0.6.0 h1:wGYYu3uicYdqXVgoYbvnkrPVXkuLM1p1ifugDMEdRi4=
+github.com/go-logfmt/logfmt v0.6.0/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
+github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
+github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp98=
+github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/muesli/reflow v0.3.0 h1:IFsN6K9NfGtjeggFP+68I4chLZV2yIKsXJFNZ+eWh6s=
+github.com/muesli/reflow v0.3.0/go.mod h1:pbwTDkVPibjO2kyvBQRBxTWEEGDGq0FlB1BIKtnHY/8=
+github.com/muesli/termenv v0.15.2 h1:GohcuySI0QmI3wN8Ok9PtKGkgkFIk7y6Vpb5PvrY+Wo=
+github.com/muesli/termenv v0.15.2/go.mod h1:Epx+iuz8sNs7mNKhxzH4fWXGNpZwUaJKRS1noLXviQ8=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -0,0 +1,163 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/charmbracelet/log"
+	"github.com/gorilla/websocket"
+	"github.com/tsukinoko-kun/portal/public"
+	"net"
+	"net/http"
+	"os"
+)
+
+const (
+	chunkSize = 1024 * 1024 // 1MB
+)
+
+var upgrader = websocket.Upgrader{
+	ReadBufferSize: chunkSize,
+}
+
+type (
+	Header struct {
+		// Name is the name of the file.
+		Name string `json:"name"`
+		// Size is the size of the file in bytes.
+		Size int `json:"size"`
+	}
+)
+
+func wsHandler(w http.ResponseWriter, r *http.Request) {
+	conn, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		log.Error("failed to upgrade connection", "err", err)
+		return
+	}
+	defer conn.Close()
+
+	// Read header
+	header := Header{}
+	err = conn.ReadJSON(&header)
+	if err != nil {
+		log.Error("failed to read header", "err", err)
+		return
+	}
+	log.Info("received header", "header", header)
+
+	file, err := os.Create(header.Name)
+	if err != nil {
+		log.Error("failed to create file", "err", err)
+		return
+	}
+	defer file.Close()
+
+	// Send READY signal to start receiving file chunks
+	err = conn.WriteMessage(websocket.TextMessage, []byte("READY"))
+	if err != nil {
+		log.Error("failed to write message", "err", err)
+		return
+	}
+
+	// Read file chunk by chunk because the file might be too large to fit in memory
+	for {
+		messageType, p, err := conn.ReadMessage()
+		if err != nil {
+			if _, ok := err.(*websocket.CloseError); ok {
+				log.Warn("connection closed by client", "err", err)
+				return
+			}
+			log.Error("failed to read message", "err", err)
+			return
+		}
+
+		if messageType == websocket.TextMessage && string(p) == "EOF" {
+			break
+		}
+
+		if messageType == websocket.BinaryMessage {
+			_, err = file.Write(p)
+			if err != nil {
+				log.Error("failed to write to file", "err", err)
+				return
+			}
+		}
+
+		err = conn.WriteMessage(websocket.TextMessage, []byte("READY"))
+		if err != nil {
+			log.Error("failed to write message", "err", err)
+			return
+		}
+	}
+
+	// send EOF to client to signal that the file has been received
+	err = conn.WriteMessage(websocket.TextMessage, []byte("EOF"))
+	if err != nil {
+		log.Error("failed to write message", "err", err)
+		return
+	}
+
+	log.Info("file written", "name", header.Name)
+}
+
+func getPublicIP() (string, error) {
+	var publicIP string
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return "", err
+	}
+	for _, addr := range addrs {
+		if ip, ok := addr.(*net.IPNet); ok && !ip.IP.IsLoopback() {
+			if ip.IP.To4() != nil { // IPv4
+				publicIP = ip.IP.String()
+				break
+			}
+		}
+	}
+	return publicIP, nil
+}
+
+func main() {
+	port := flag.Int("port", 0, "port to listen on")
+	flag.Parse()
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/backdrop.webp":
+			w.Header().Set("Content-Type", "image/webp")
+			_, _ = w.Write(public.BackdropWebP)
+		case "/favicon.svg":
+			w.Header().Set("Content-Type", "image/svg+xml")
+			_, _ = w.Write(public.FaviconSVG)
+		case "/index.css":
+			w.Header().Set("Content-Type", "text/css")
+			_, _ = w.Write(public.IndexCSS)
+		case "/":
+			w.Header().Set("Content-Type", "text/html")
+			_, _ = w.Write(public.IndexHTML)
+		case "/index.js":
+			w.Header().Set("Content-Type", "application/javascript")
+			_, _ = w.Write(public.IndexJS)
+		default:
+			http.NotFound(w, r)
+		}
+	})
+	http.HandleFunc("/ws", wsHandler)
+
+	ln, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
+	if err != nil {
+		log.Fatal("failed to listen", "err", err)
+		return
+	}
+
+	log.Info("server started", "addr", ln.Addr())
+
+	if publicIP, err := getPublicIP(); err == nil {
+		fmt.Printf("Portal available at http://%s:%d\n", publicIP, ln.Addr().(*net.TCPAddr).Port)
+	}
+
+	if err := http.Serve(ln, nil); err != nil {
+		log.Fatal("failed to serve", "err", err)
+		return
+	}
+}