277 lines
7.0 KiB
Go
277 lines
7.0 KiB
Go
// Copyright Terence J. Boldt (c)2020-2023
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// Use of this source code is governed by an MIT
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// license that can be found in the LICENSE file.
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// This file contains the handler for executing Linux and internal
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// commands
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package handlers
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import (
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"errors"
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"fmt"
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"os"
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"os/exec"
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"strconv"
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"strings"
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"time"
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"github.com/tjboldt/Apple2-IO-RPi/RaspberryPi/apple2driver/drive"
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"github.com/tjboldt/Apple2-IO-RPi/RaspberryPi/apple2driver/info"
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"github.com/tjboldt/ProDOS-Utilities/prodos"
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)
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var forceLowercase = false
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var execTimeoutSeconds = int(10)
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// ExecCommand handles requests for the Apple II executing Linux commands
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func ExecCommand(drive1 *prodos.ReaderWriterAt, drive2 *prodos.ReaderWriterAt) {
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workingDirectory, err := os.Getwd()
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if err != nil {
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workingDirectory = "/home"
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comm.WriteString("Failed to get current working directory, setting to /home\r")
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}
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fmt.Printf("Reading command to execute...\n")
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linuxCommand, err := comm.ReadString()
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if forceLowercase {
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linuxCommand = strings.ToLower(linuxCommand)
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}
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linuxCommand = strings.Trim(linuxCommand, " ")
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if linuxCommand == "" {
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linuxCommand = "a2help"
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}
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fmt.Printf("Command to run: %s\n", linuxCommand)
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if strings.HasPrefix(linuxCommand, "cd ") {
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workingDirectory = strings.Replace(linuxCommand, "cd ", "", 1)
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err = os.Chdir(workingDirectory)
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if err != nil {
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comm.WriteString("Failed to set working directory\r")
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return
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}
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comm.WriteString("Working directory set\r")
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return
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}
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if linuxCommand == "a2version" {
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a2version()
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return
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}
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if linuxCommand == "a2help" {
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a2help()
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return
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}
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if linuxCommand == "a2lower" {
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a2lower(false)
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return
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}
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if linuxCommand == "A2LOWER" {
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a2lower(true)
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return
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}
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if linuxCommand == "a2wifi" {
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a2wifi()
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return
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}
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if strings.HasPrefix(linuxCommand, "a2timeout") {
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a2timeout(linuxCommand)
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return
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}
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if strings.HasPrefix(linuxCommand, "a2drive") {
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a2drive(linuxCommand, drive1, drive2)
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return
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}
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if linuxCommand == "a2prompt" {
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prompt := fmt.Sprintf("A2IO:%s ", workingDirectory)
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comm.WriteString(prompt)
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return
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}
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if linuxCommand == "a2wifi list" {
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linuxCommand = a2wifiList()
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}
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if strings.HasPrefix(linuxCommand, "a2wifi select") {
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linuxCommand, err = a2wifiSelect(linuxCommand)
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}
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if err == nil {
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execCommand(linuxCommand, workingDirectory)
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}
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}
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func execCommand(linuxCommand string, workingDirectory string) {
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// force the command to combine stderr(2) into stdout(1)
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linuxCommand += " 2>&1"
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cmd := exec.Command("bash", "-c", linuxCommand)
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cmd.Dir = workingDirectory
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cmd.Env = append(os.Environ(),
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"TERM=vt100",
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"LINES=24",
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"COLUMNS=80",
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)
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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fmt.Printf("Failed to set stdout\n")
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comm.WriteString("Failed to set stdout\r")
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return
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}
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err = cmd.Start()
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if err != nil {
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fmt.Printf("Failed to start command\n")
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comm.WriteString("Failed to start command\r")
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return
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}
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timeout := time.After(time.Duration(execTimeoutSeconds) * time.Second)
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for {
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select {
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case <-timeout:
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comm.WriteString("\rCancelled by apple2driver\r")
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cmd.Process.Kill()
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return
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default:
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bb := make([]byte, 1)
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n, stdOutErr := stdout.Read(bb)
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if stdOutErr == nil {
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if n > 0 {
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b := bb[0]
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comm.SendCharacter(b)
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}
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} else {
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comm.WriteByte(0)
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cmd.Wait()
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return
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}
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}
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}
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}
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func a2version() {
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comm.WriteString("\rDriver version: " + info.Version + "\r")
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}
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func a2help() {
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comm.WriteString("\rDriver version: " + info.Version + "\r" +
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"\r" +
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"Example from ] prompt:\r" +
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"]RPI ls /home/pi\r" +
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"\r" +
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"Example from Applesoft BASIC:\r" +
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"]10 PRINT CHR$(4)\"RPI ping apple.com\"\r" +
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"]RUN\r" +
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"\r" +
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"Driver commands called with RPI:\r" +
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"a2help - display this message\r" +
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"a2version - display driver version\r" +
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"a2wifi - set up wifi\r" +
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"a2timeout - seconds to timeout commands\r" +
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"A2LOWER - force lowercase for II+\r" +
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"a2lower - disable force lowercase\r" +
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"a2drive - change drive images\r" +
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"\r")
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}
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func a2timeout(linuxCommand string) {
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params := strings.Fields(linuxCommand)
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switch len(params) {
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case 1:
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comm.WriteString("\rCommand timeout: " + strconv.FormatInt(int64(execTimeoutSeconds), 10) + "\r")
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case 2:
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timeoutSeconds, err := strconv.ParseInt(params[1], 10, 32)
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if err != nil {
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comm.WriteString("\rFailed to parse timeout\r")
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} else {
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execTimeoutSeconds = int(timeoutSeconds)
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comm.WriteString("\rCommand timeout set to: " + strconv.FormatInt(int64(execTimeoutSeconds), 10) + "\r")
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}
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default:
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comm.WriteString("\rToo many parameters\n")
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}
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}
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func a2drive(linuxCommand string, drive1 *prodos.ReaderWriterAt, drive2 *prodos.ReaderWriterAt) {
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params := strings.Fields(linuxCommand)
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if len(params) < 3 {
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showa2DriveUsage()
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return
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}
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driveNumber, err := strconv.ParseInt(params[1], 10, 32)
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if err != nil {
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comm.WriteString("\rFailed to parse drive number\r")
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showa2DriveUsage()
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return
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}
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if params[2] == "regen" {
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directory, err := drive.GetDriveImageDirectory()
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if err != nil {
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comm.WriteString("\rFailed to parse source directory\r")
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return
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}
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if len(params) > 3 {
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directory = params[3]
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}
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switch driveNumber {
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case 1:
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*drive1, err = drive.GenerateDriveFromDirectory("APPLE2.IO.RPI", directory)
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if err != nil {
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comm.WriteString("\rFailed to regenerate drive 1\r")
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return
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}
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comm.WriteString("\rDrive 1 regenerated\r")
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case 2:
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*drive2, err = drive.GenerateDriveFromDirectory("APPLE2.IO.RPI2", directory)
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if err != nil {
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comm.WriteString("\rFailed to regenerate drive 2\r")
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return
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}
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comm.WriteString("\rDrive 2 regenerated\r")
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default:
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comm.WriteString("\rOnly drives 1 or 2 are supported\r")
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showa2DriveUsage()
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return
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}
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}
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}
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func showa2DriveUsage() {
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comm.WriteString("\rUsage: a2drive DRIVENUMBER [regen [PATH] | load FILENAME]\rExamples: a2drive 1 regen ~/Apple2-IO-RPi/RaspberryPi/driveimage\r a2drive 2 load /home/pi/Games.hdv\r")
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}
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func a2lower(enable bool) {
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forceLowercase = enable
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comm.WriteString(fmt.Sprintf("All commands will be converted to lowercase: %t\r", forceLowercase))
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}
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func a2wifi() {
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comm.WriteString("\r" +
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"Usage: a2wifi list\r" +
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" a2wifi select SSID PASSWORD REGION\r" +
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"\r")
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}
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func a2wifiList() string {
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return "sudo iwlist wlan0 scanning | grep ESSID | sed s/.*ESSID://g | sed s/\\\"//g"
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}
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func a2wifiSelect(linuxCommand string) (string, error) {
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params := strings.Fields(linuxCommand)
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if len(params) != 5 {
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comm.WriteString("\rIncorrect number of parameters. Usage: a2wifi select SSID PASSWORD REGION\r\r")
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return "", errors.New("Incorrect number of parameters. Usage: a2wifi select SSID PASSWORD REGION")
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}
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ssid := params[2]
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psk := params[3]
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region := params[4]
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linuxCommand = "printf \"country=%s\\nupdate_config=1\\nctrl_interface=/var/run/wpa_supplicant\\n\\nnetwork={\\n scan_ssid=1\\n ssid=\\\"%s\\\"\n psk=\\\"%s\\\"\\n}\\n\" " +
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region + " " +
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ssid + " " +
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psk + " " +
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" > /tmp/wpa_supplicant.conf; " +
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"sudo mv /tmp/wpa_supplicant.conf /etc/wpa_supplicant/; " +
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"sudo wpa_cli -i wlan0 reconfigure"
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return linuxCommand, nil
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}
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