Move libmuttonserver.go to this repo

libmuttonserver.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/rwinkhart/libmutton/core"
+	"github.com/rwinkhart/libmutton/sync"
+)
+
+const ansiBold = "\033[1m"
+
+func main() {
+	args := os.Args
+	if len(args) < 2 {
+		helpServer()
+	}
+
+	// check if stdin was provided
+	stdinInfo, _ := os.Stdin.Stat()
+	stdinPresent := stdinInfo.Mode()&os.ModeNamedPipe != 0
+
+	var stdin []string
+	if stdinPresent {
+		// read stdin, appending each line to the stdin slice
+		scanner := bufio.NewScanner(os.Stdin)
+		for scanner.Scan() {
+			stdin = append(stdin, scanner.Text())
+		}
+	}
+
+	switch args[1] {
+	case "fetch":
+		// print all information needed for syncing to stdout for interpretation by the client
+		// stdin[0] is expected to be the device ID
+		sync.GetRemoteDataFromServer(stdin[0])
+	case "rename":
+		// move an entry to a new location before using fallthrough to add its previous iteration to the deletions directory
+		// stdin[0] is evaluated after fallthrough
+		// stdin[1] is expected to be the OLD incomplete target location with FSPath representing path separators - always pass in UNIX format
+		// stdin[2] is expected to be the NEW incomplete target location with FSPath representing path separators - always pass in UNIX format
+		sync.RenameLocal(strings.ReplaceAll(stdin[1], sync.FSPath, "/"), strings.ReplaceAll(stdin[2], sync.FSPath, "/"), true)
+		fallthrough // fallthrough to add the old entry to the deletions directory
+	case "shear":
+		// shear an entry from the server and add it to the deletions directory
+		// stdin[0] is expected to be the device ID
+		// stdin[1] is expected to be the incomplete target location with FSPath representing path separators - always pass in UNIX format
+		sync.ShearLocal(strings.ReplaceAll(stdin[1], sync.FSPath, "/"), stdin[0])
+	case "addfolder":
+		// add a new folder to the server
+		// stdin[0] is expected to be the incomplete target location with FSPath representing path separators - always pass in UNIX format
+		sync.AddFolderLocal(strings.ReplaceAll(stdin[0], sync.FSPath, "/"))
+	case "register":
+		// register a new device ID
+		// stdin[0] is expected to be the device ID
+		_, _ = os.Create(core.ConfigDir + core.PathSeparator + "devices" + core.PathSeparator + stdin[0]) // error ignored; failure unlikely to occur if init was successful; "register" is not a user-facing argument and thus the error would not be visible
+		// print EntryRoot and bool indicating OS type to stdout for client to store in config
+		fmt.Print(core.EntryRoot + sync.FSSpace + strconv.FormatBool(core.IsWindows))
+	case "init":
+		// create the necessary directories for libmuttonserver to function
+		core.DirInit(false)
+		_ = os.MkdirAll(core.ConfigDir+core.PathSeparator+"deletions", 0700) // error ignored; failure would have occurred by this point in core.DirInit
+		fmt.Println("libmuttonserver directories initialized")
+	case "version":
+		versionServer()
+	default:
+		helpServer()
+	}
+}
+
+func helpServer() {
+	fmt.Print(ansiBold + "\nlibmuttonserver | Copyright (c) 2024 Randall Winkhart\n" + core.AnsiReset + `
+This software exists under the MIT license; you may redistribute it under certain conditions.
+This program comes with absolutely no warranty; type "libmuttonserver version" for details.
+
+` + ansiBold + "Usage:" + core.AnsiReset + ` libmuttonserver <argument>
+
+` + ansiBold + "Arguments (user):" + core.AnsiReset + `
+ help                    Bring up this menu
+ version                 Display version and license information
+ init                    Create the necessary directories for libmuttonserver to function` + "\n\n")
+	os.Exit(0)
+}
+
+func versionServer() {
+	fmt.Print(ansiBold + "\n                    MIT License" + core.AnsiReset + `
+
+  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.` + "\n\n---------------------------------------------------------")
+	fmt.Print(ansiBold + "\n\n              libmuttonserver" + core.AnsiReset + " Version " + core.LibmuttonVersion + `
+
+           Copyright (c) 2024 Randall Winkhart` + "\n\n")
+}