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fix vbox scancodes and support critical key combinations during boot-…
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…time operations
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Andrew Pennebaker committed Mar 26, 2018
1 parent 1d97382 commit fdc6ac6
Showing 1 changed file with 87 additions and 11 deletions.
98 changes: 87 additions & 11 deletions builder/virtualbox/common/step_type_boot_command.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import (
"context"
"fmt"
"log"
"regexp"
"strings"
"time"
"unicode"
Expand Down Expand Up @@ -120,7 +121,7 @@ func (s *StepTypeBootCommand) Run(_ context.Context, state multistep.StateBag) m
func (*StepTypeBootCommand) Cleanup(multistep.StateBag) {}

func scancodes(message string) []string {
// Scancodes reference: http://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html
// Scancodes reference: https://www.win.tue.nl/~aeb/linux/kbd/scancodes-10.html
//
// Scancodes represent raw keyboard output and are fed to the VM by the
// VBoxManage controlvm keyboardputscancode program.
Expand All @@ -130,7 +131,7 @@ func scancodes(message string) []string {
// derived from the first by the addition of 0x80.
special := make(map[string][]string)
special["<bs>"] = []string{"0e", "8e"}
special["<del>"] = []string{"53", "d3"}
special["<del>"] = []string{"e053", "e0d3"}
special["<enter>"] = []string{"1c", "9c"}
special["<esc>"] = []string{"01", "81"}
special["<f1>"] = []string{"3b", "bb"}
Expand All @@ -143,24 +144,28 @@ func scancodes(message string) []string {
special["<f8>"] = []string{"42", "c2"}
special["<f9>"] = []string{"43", "c3"}
special["<f10>"] = []string{"44", "c4"}
special["<f11>"] = []string{"57", "d7"}
special["<f12>"] = []string{"58", "d8"}
special["<return>"] = []string{"1c", "9c"}
special["<tab>"] = []string{"0f", "8f"}
special["<up>"] = []string{"48", "c8"}
special["<down>"] = []string{"50", "d0"}
special["<left>"] = []string{"4b", "cb"}
special["<right>"] = []string{"4d", "cd"}
special["<up>"] = []string{"e048", "e0c8"}
special["<down>"] = []string{"e050", "e0d0"}
special["<left>"] = []string{"e04b", "e0cb"}
special["<right>"] = []string{"e04d", "e0cd"}
special["<spacebar>"] = []string{"39", "b9"}
special["<insert>"] = []string{"52", "d2"}
special["<home>"] = []string{"47", "c7"}
special["<end>"] = []string{"4f", "cf"}
special["<pageUp>"] = []string{"49", "c9"}
special["<pageDown>"] = []string{"51", "d1"}
special["<insert>"] = []string{"e052", "e0d2"}
special["<home>"] = []string{"e047", "e0c7"}
special["<end>"] = []string{"e04f", "e0cf"}
special["<pageUp>"] = []string{"e049", "e0c9"}
special["<pageDown>"] = []string{"e051", "e0d1"}
special["<leftAlt>"] = []string{"38", "b8"}
special["<leftCtrl>"] = []string{"1d", "9d"}
special["<leftShift>"] = []string{"2a", "aa"}
special["<rightAlt>"] = []string{"e038", "e0b8"}
special["<rightCtrl>"] = []string{"e01d", "e09d"}
special["<rightShift>"] = []string{"36", "b6"}
special["<leftSuper>"] = []string{"e05b", "e0db"}
special["<rightSuper>"] = []string{"e05c", "e0dc"}

shiftedChars := "~!@#$%^&*()_+{}|:\"<>?"

Expand All @@ -186,10 +191,51 @@ func scancodes(message string) []string {
}
}

azOnRegex := regexp.MustCompile("^<(?P<ordinary>[a-zA-Z])On>")
azOffRegex := regexp.MustCompile("^<(?P<ordinary>[a-zA-Z])Off>")

result := make([]string, 0, len(message)*2)
for len(message) > 0 {
var scancode []string

if azOnRegex.MatchString(message) {
m := azOnRegex.FindStringSubmatch(message)
r, _ := utf8.DecodeRuneInString(m[1])
message = message[len("<aOn>"):]
scancodeInt := scancodeMap[r]
keyShift := unicode.IsUpper(r) || strings.ContainsRune(shiftedChars, r)

if keyShift {
scancode = append(scancode, "2a")
}

scancode = append(scancode, fmt.Sprintf("%02x", scancodeInt))

log.Printf("Sending char '%c', code '%v', shift %v", r, scancodeInt, keyShift)
}

if azOffRegex.MatchString(message) {
m := azOffRegex.FindStringSubmatch(message)
r, _ := utf8.DecodeRuneInString(m[1])
message = message[len("<aOff>"):]
scancodeInt := scancodeMap[r] + 0x80
keyShift := unicode.IsUpper(r) || strings.ContainsRune(shiftedChars, r)

if keyShift {
scancode = append(scancode, "aa")
}

scancode = append(scancode, fmt.Sprintf("%02x", scancodeInt))

log.Printf("Sending char '%c', code '%v', shift %v", r, scancodeInt, keyShift)
}

if strings.HasPrefix(message, "<f12On>") {
scancode = append(scancode, "58")
message = message[len("<f12On>"):]
log.Printf("Special code '<f12On>', replacing with: 58")
}

if strings.HasPrefix(message, "<leftAltOn>") {
scancode = append(scancode, "38")
message = message[len("<leftAltOn>"):]
Expand All @@ -208,6 +254,18 @@ func scancodes(message string) []string {
log.Printf("Special code '<leftShiftOn>' found, replacing with: 2a")
}

if strings.HasPrefix(message, "<leftSuperOn>") {
scancode = append(scancode, "e05b")
message = message[len("<leftSuperOn>"):]
log.Printf("Special code '<leftSuperOn>' found, replacing with: e05b")
}

if strings.HasPrefix(message, "<f12Off>") {
scancode = append(scancode, "d8")
message = message[len("<f12Off>"):]
log.Printf("Special code '<f12Off>' found, replacing with: d8")
}

if strings.HasPrefix(message, "<leftAltOff>") {
scancode = append(scancode, "b8")
message = message[len("<leftAltOff>"):]
Expand All @@ -226,6 +284,12 @@ func scancodes(message string) []string {
log.Printf("Special code '<leftShiftOff>' found, replacing with: aa")
}

if strings.HasPrefix(message, "<leftSuperOff>") {
scancode = append(scancode, "e0db")
message = message[len("<leftSuperOff>"):]
log.Printf("Special code '<leftSuperOff>' found, replacing with: e0db")
}

if strings.HasPrefix(message, "<rightAltOn>") {
scancode = append(scancode, "e038")
message = message[len("<rightAltOn>"):]
Expand All @@ -244,6 +308,12 @@ func scancodes(message string) []string {
log.Printf("Special code '<rightShiftOn>' found, replacing with: 36")
}

if strings.HasPrefix(message, "<rightSuperOn>") {
scancode = append(scancode, "e05c")
message = message[len("<rightSuperOn>"):]
log.Printf("Special code '<rightSuperOn>' found, replacing with: e05c")
}

if strings.HasPrefix(message, "<rightAltOff>") {
scancode = append(scancode, "e0b8")
message = message[len("<rightAltOff>"):]
Expand All @@ -262,6 +332,12 @@ func scancodes(message string) []string {
log.Printf("Special code '<rightShiftOff>' found, replacing with: b6")
}

if strings.HasPrefix(message, "<rightSuperOff>") {
scancode = append(scancode, "e0dc")
message = message[len("<rightSuperOff>"):]
log.Printf("Special code '<rightSuperOff>' found, replacing with: e0dc")
}

if strings.HasPrefix(message, "<wait>") {
log.Printf("Special code <wait> found, will sleep 1 second at this point.")
scancode = append(scancode, "wait")
Expand Down

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