How to use EscapeDoubleQuotes method of vmimpl Package

Best Syzkaller code snippet using vmimpl.EscapeDoubleQuotes

isolated.go

Source:isolated.go

1// Copyright 2017 syzkaller project authors. All rights reserved.2// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.3package isolated4import (5	"bytes"6	"fmt"7	"io"8	"io/ioutil"9	"os"10	"path/filepath"11	"strconv"12	"strings"13	"time"14	"github.com/google/syzkaller/pkg/config"15	"github.com/google/syzkaller/pkg/log"16	"github.com/google/syzkaller/pkg/osutil"17	"github.com/google/syzkaller/vm/vmimpl"18)19const pstoreConsoleFile = "/sys/fs/pstore/console-ramoops-0"20func init() {21	vmimpl.Register("isolated", ctor, false)22}23type Config struct {24	Host          string   `json:"host"`           // host ip addr25	Targets       []string `json:"targets"`        // target machines: (hostname|ip)(:port)?26	TargetDir     string   `json:"target_dir"`     // directory to copy/run on target27	TargetReboot  bool     `json:"target_reboot"`  // reboot target on repair28	USBDevNums    []string `json:"usb_device_num"` // /sys/bus/usb/devices/29	StartupScript string   `json:"startup_script"` // script to execute after each startup30	Pstore        bool     `json:"pstore"`         // use crashlogs from pstore31}32type Pool struct {33	env *vmimpl.Env34	cfg *Config35}36type instance struct {37	cfg         *Config38	os          string39	targetAddr  string40	targetPort  int41	index       int42	closed      chan bool43	debug       bool44	sshUser     string45	sshKey      string46	forwardPort int47}48func ctor(env *vmimpl.Env) (vmimpl.Pool, error) {49	cfg := &Config{}50	if err := config.LoadData(env.Config, cfg); err != nil {51		return nil, err52	}53	if cfg.Host == "" {54		cfg.Host = "127.0.0.1"55	}56	if len(cfg.Targets) == 0 {57		return nil, fmt.Errorf("config param targets is empty")58	}59	if cfg.TargetDir == "" {60		return nil, fmt.Errorf("config param target_dir is empty")61	}62	for _, target := range cfg.Targets {63		if _, _, err := splitTargetPort(target); err != nil {64			return nil, fmt.Errorf("bad target %q: %v", target, err)65		}66	}67	if len(cfg.USBDevNums) > 0 {68		if len(cfg.USBDevNums) != len(cfg.Targets) {69			return nil, fmt.Errorf("the number of Targets and the number of USBDevNums should be same")70		}71	}72	if env.Debug && len(cfg.Targets) > 1 {73		log.Logf(0, "limiting number of targets from %v to 1 in debug mode", len(cfg.Targets))74		cfg.Targets = cfg.Targets[:1]75		if len(cfg.USBDevNums) > 1 {76			cfg.USBDevNums = cfg.USBDevNums[:1]77		}78	}79	pool := &Pool{80		cfg: cfg,81		env: env,82	}83	return pool, nil84}85func (pool *Pool) Count() int {86	return len(pool.cfg.Targets)87}88func (pool *Pool) Create(workdir string, index int) (vmimpl.Instance, error) {89	targetAddr, targetPort, _ := splitTargetPort(pool.cfg.Targets[index])90	inst := &instance{91		cfg:        pool.cfg,92		os:         pool.env.OS,93		targetAddr: targetAddr,94		targetPort: targetPort,95		index:      index,96		closed:     make(chan bool),97		debug:      pool.env.Debug,98		sshUser:    pool.env.SSHUser,99		sshKey:     pool.env.SSHKey,100	}101	closeInst := inst102	defer func() {103		if closeInst != nil {104			closeInst.Close()105		}106	}()107	if err := inst.repair(); err != nil {108		return nil, fmt.Errorf("repair failed: %v", err)109	}110	// Remount to writable.111	inst.ssh("mount -o remount,rw /")112	// Create working dir if doesn't exist.113	inst.ssh("mkdir -p '" + inst.cfg.TargetDir + "'")114	// Remove temp files from previous runs.115	inst.ssh("rm -rf '" + filepath.Join(inst.cfg.TargetDir, "*") + "'")116	// Remove pstore files from previous runs.117	if inst.cfg.Pstore {118		inst.ssh(fmt.Sprintf("rm %v", pstoreConsoleFile))119	}120	closeInst = nil121	return inst, nil122}123func (inst *instance) Forward(port int) (string, error) {124	if inst.forwardPort != 0 {125		return "", fmt.Errorf("isolated: Forward port already set")126	}127	if port == 0 {128		return "", fmt.Errorf("isolated: Forward port is zero")129	}130	inst.forwardPort = port131	return fmt.Sprintf(inst.cfg.Host+":%v", port), nil132}133func (inst *instance) ssh(command string) error {134	if inst.debug {135		log.Logf(0, "executing ssh %+v", command)136	}137	rpipe, wpipe, err := osutil.LongPipe()138	if err != nil {139		return err140	}141	// TODO(dvyukov): who is closing rpipe?142	args := append(vmimpl.SSHArgs(inst.debug, inst.sshKey, inst.targetPort),143		inst.sshUser+"@"+inst.targetAddr, command)144	if inst.debug {145		log.Logf(0, "running command: ssh %#v", args)146	}147	cmd := osutil.Command("ssh", args...)148	cmd.Stdout = wpipe149	cmd.Stderr = wpipe150	if err := cmd.Start(); err != nil {151		wpipe.Close()152		return err153	}154	wpipe.Close()155	done := make(chan bool)156	go func() {157		select {158		case <-time.After(time.Second * 30):159			if inst.debug {160				log.Logf(0, "ssh hanged")161			}162			cmd.Process.Kill()163		case <-done:164		}165	}()166	if err := cmd.Wait(); err != nil {167		close(done)168		out, _ := ioutil.ReadAll(rpipe)169		if inst.debug {170			log.Logf(0, "ssh failed: %v\n%s", err, out)171		}172		return fmt.Errorf("ssh %+v failed: %v\n%s", args, err, out)173	}174	close(done)175	if inst.debug {176		log.Logf(0, "ssh returned")177	}178	return nil179}180func (inst *instance) waitRebootAndSSH(rebootTimeout int, sshTimeout time.Duration) error {181	if err := inst.waitForReboot(rebootTimeout); err != nil {182		log.Logf(2, "isolated: machine did not reboot")183		return err184	}185	log.Logf(2, "isolated: rebooted wait for comeback")186	if err := inst.waitForSSH(sshTimeout); err != nil {187		log.Logf(2, "isolated: machine did not comeback")188		return err189	}190	log.Logf(2, "isolated: reboot succeeded")191	return nil192}193// Escapes double quotes(and nested double quote escapes). Ignores any other escapes.194// Reference: https://www.gnu.org/software/bash/manual/html_node/Double-Quotes.html195func escapeDoubleQuotes(inp string) string {196	var ret strings.Builder197	for pos := 0; pos < len(inp); pos++ {198		// If inp[pos] is not a double quote or a backslash, just use199		// as is.200		if inp[pos] != '"' && inp[pos] != '\\' {201			ret.WriteByte(inp[pos])202			continue203		}204		// If it is a double quote, escape.205		if inp[pos] == '"' {206			ret.WriteString("\\\"")207			continue208		}209		// If we detect a backslash, reescape only if what it's already escaping210		// is a double-quotes.211		temp := ""212		j := pos213		for ; j < len(inp); j++ {214			if inp[j] == '\\' {215				temp += string(inp[j])216				continue217			}218			// If the escape corresponds to a double quotes, re-escape.219			// Else, just use as is.220			if inp[j] == '"' {221				temp = temp + temp + "\\\""222			} else {223				temp += string(inp[j])224			}225			break226		}227		ret.WriteString(temp)228		pos = j229	}230	return ret.String()231}232func (inst *instance) repair() error {233	log.Logf(2, "isolated: trying to ssh")234	if err := inst.waitForSSH(30 * time.Minute); err != nil {235		log.Logf(2, "isolated: ssh failed")236		return fmt.Errorf("SSH failed")237	}238	if inst.cfg.TargetReboot {239		if len(inst.cfg.USBDevNums) > 0 {240			log.Logf(2, "isolated: trying to reboot by USB authorization")241			usbAuth := fmt.Sprintf("%s%s%s", "/sys/bus/usb/devices/", inst.cfg.USBDevNums[inst.index], "/authorized")242			if err := ioutil.WriteFile(usbAuth, []byte("0"), 0); err != nil {243				log.Logf(2, "isolated: failed to turn off the device")244				return err245			}246			if err := ioutil.WriteFile(usbAuth, []byte("1"), 0); err != nil {247				log.Logf(2, "isolated: failed to turn on the device")248				return err249			}250		} else {251			log.Logf(2, "isolated: ssh succeeded, trying to reboot by ssh")252			inst.ssh("reboot") // reboot will return an error, ignore it253			if err := inst.waitRebootAndSSH(5*60, 30*time.Minute); err != nil {254				return fmt.Errorf("waitRebootAndSSH failed: %v", err)255			}256		}257	}258	if inst.cfg.StartupScript != "" {259		log.Logf(2, "isolated: executing startup_script")260		// Execute the contents of the StartupScript on the DUT.261		contents, err := ioutil.ReadFile(inst.cfg.StartupScript)262		if err != nil {263			return fmt.Errorf("unable to read startup_script: %v", err)264		}265		c := string(contents)266		if err := inst.ssh(fmt.Sprintf("bash -c \"%v\"", escapeDoubleQuotes(c))); err != nil {267			return fmt.Errorf("failed to execute startup_script: %v", err)268		}269		log.Logf(2, "isolated: done executing startup_script")270	}271	return nil272}273func (inst *instance) waitForSSH(timeout time.Duration) error {274	return vmimpl.WaitForSSH(inst.debug, timeout, inst.targetAddr, inst.sshKey, inst.sshUser,275		inst.os, inst.targetPort, nil)276}277func (inst *instance) waitForReboot(timeout int) error {278	var err error279	start := time.Now()280	for {281		if !vmimpl.SleepInterruptible(time.Second) {282			return fmt.Errorf("shutdown in progress")283		}284		// If it fails, then the reboot started285		if err = inst.ssh("pwd"); err != nil {286			return nil287		}288		if time.Since(start).Seconds() > float64(timeout) {289			break290		}291	}292	return fmt.Errorf("isolated: the machine did not reboot on repair")293}294func (inst *instance) Close() {295	close(inst.closed)296}297func (inst *instance) Copy(hostSrc string) (string, error) {298	baseName := filepath.Base(hostSrc)299	vmDst := filepath.Join(inst.cfg.TargetDir, baseName)300	inst.ssh("pkill -9 '" + baseName + "'; rm -f '" + vmDst + "'")301	args := append(vmimpl.SCPArgs(inst.debug, inst.sshKey, inst.targetPort),302		hostSrc, inst.sshUser+"@"+inst.targetAddr+":"+vmDst)303	cmd := osutil.Command("scp", args...)304	if inst.debug {305		log.Logf(0, "running command: scp %#v", args)306		cmd.Stdout = os.Stdout307		cmd.Stderr = os.Stdout308	}309	if err := cmd.Start(); err != nil {310		return "", err311	}312	done := make(chan bool)313	go func() {314		select {315		case <-time.After(3 * time.Minute):316			cmd.Process.Kill()317		case <-done:318		}319	}()320	err := cmd.Wait()321	close(done)322	if err != nil {323		return "", err324	}325	return vmDst, nil326}327func (inst *instance) Run(timeout time.Duration, stop <-chan bool, command string) (328	<-chan []byte, <-chan error, error) {329	args := append(vmimpl.SSHArgs(inst.debug, inst.sshKey, inst.targetPort), inst.sshUser+"@"+inst.targetAddr)330	dmesg, err := vmimpl.OpenRemoteConsole("ssh", args...)331	if err != nil {332		return nil, nil, err333	}334	rpipe, wpipe, err := osutil.LongPipe()335	if err != nil {336		dmesg.Close()337		return nil, nil, err338	}339	args = vmimpl.SSHArgs(inst.debug, inst.sshKey, inst.targetPort)340	// Forward target port as part of the ssh connection (reverse proxy)341	if inst.forwardPort != 0 {342		proxy := fmt.Sprintf("%v:127.0.0.1:%v", inst.forwardPort, inst.forwardPort)343		args = append(args, "-R", proxy)344	}345	if inst.cfg.Pstore {346		args = append(args, "-o", "ServerAliveInterval=6")347		args = append(args, "-o", "ServerAliveCountMax=5")348	}349	args = append(args, inst.sshUser+"@"+inst.targetAddr, "cd "+inst.cfg.TargetDir+" && exec "+command)350	log.Logf(0, "running command: ssh %#v", args)351	if inst.debug {352		log.Logf(0, "running command: ssh %#v", args)353	}354	cmd := osutil.Command("ssh", args...)355	cmd.Stdout = wpipe356	cmd.Stderr = wpipe357	if err := cmd.Start(); err != nil {358		dmesg.Close()359		rpipe.Close()360		wpipe.Close()361		return nil, nil, err362	}363	wpipe.Close()364	var tee io.Writer365	if inst.debug {366		tee = os.Stdout367	}368	merger := vmimpl.NewOutputMerger(tee)369	merger.Add("dmesg", dmesg)370	merger.Add("ssh", rpipe)371	return vmimpl.Multiplex(cmd, merger, dmesg, timeout, stop, inst.closed, inst.debug)372}373func (inst *instance) readPstoreContents() ([]byte, error) {374	log.Logf(0, "reading pstore contents")375	args := append(vmimpl.SSHArgs(inst.debug, inst.sshKey, inst.targetPort),376		inst.sshUser+"@"+inst.targetAddr, "cat "+pstoreConsoleFile+" && rm "+pstoreConsoleFile)377	if inst.debug {378		log.Logf(0, "running command: ssh %#v", args)379	}380	var stdout, stderr bytes.Buffer381	cmd := osutil.Command("ssh", args...)382	cmd.Stdout = &stdout383	cmd.Stderr = &stderr384	if err := cmd.Run(); err != nil {385		return nil, fmt.Errorf("unable to read pstore file: %v: %v", err, stderr.String())386	}387	return stdout.Bytes(), nil388}389func (inst *instance) Diagnose() ([]byte, bool) {390	if !inst.cfg.Pstore {391		return nil, false392	}393	log.Logf(2, "waiting for crashed DUT to come back up")394	if err := inst.waitRebootAndSSH(5*60, 30*time.Minute); err != nil {395		return []byte(fmt.Sprintf("unable to SSH into DUT after reboot: %v", err)), false396	}397	log.Logf(2, "reading contents of pstore")398	contents, err := inst.readPstoreContents()399	if err != nil {400		return []byte(fmt.Sprintf("Diagnose failed: %v\n", err)), false401	}402	return contents, false403}404func splitTargetPort(addr string) (string, int, error) {405	target := addr406	port := 22407	if colonPos := strings.Index(addr, ":"); colonPos != -1 {408		p, err := strconv.ParseUint(addr[colonPos+1:], 10, 16)409		if err != nil {410			return "", 0, err411		}412		target = addr[:colonPos]413		port = int(p)414	}415	if target == "" {416		return "", 0, fmt.Errorf("target is empty")417	}418	return target, port, nil419}...

isolated_test.go

Source:isolated_test.go

...4import (5	"testing"6	"github.com/google/syzkaller/vm/vmimpl"7)8func TestEscapeDoubleQuotes(t *testing.T) {9	testcases := []struct {10		inp      string11		expected string12	}{13		// Input with no quoting returns the same string.14		{15			"",16			"",17		},18		{19			"adsf",20			"adsf",21		},22		// Inputs with escaping of characters other that double23		// quotes returns the same input.24		{25			"\\$\\`\\\\\n", // \$\`\\\n26			"\\$\\`\\\\\n", // \$\`\\\n27		},28		// Input with double quote.29		{30			`"`,31			`\"`,32		},33		// Input with already escaped double quote.34		{35			`\"`,36			`\\\"`,37		},38		// Input with already escaped backtick and already39		// double quote. Should only re-escape the40		// double quote.41		{42			"\\`something\"",   // \`something"43			"\\`something\\\"", // \`something\"44		},45		// Input with already escaped backtick and already46		// escaped double quote. Should only re-escape the47		// escaped double quote.48		{49			"\\`something\\\"",     // \`something\"50			"\\`something\\\\\\\"", // \`something\\\"51		},52		{53			`touch \54    /tmp/OK55touch '/tmp/OK2'56touch "/tmp/OK3"57touch /tmp/OK458bash -c "bash -c \"ls -al\""`,59			`touch \60    /tmp/OK61touch '/tmp/OK2'62touch \"/tmp/OK3\"63touch /tmp/OK464bash -c \"bash -c \\\"ls -al\\\"\"`,65		},66	}67	for i, tc := range testcases {68		output := vmimpl.EscapeDoubleQuotes(tc.inp)69		if tc.expected != output {70			t.Fatalf("%v: For input %v Expected escaped string %v got %v", i+1, tc.inp, tc.expected, output)71		}72	}73}...

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3    vm := new(mo.VirtualMachine)4    guestInfo := new(types.GuestInfo)5    nicInfo := new(types.GuestNicInfo)6    nicInfo2 := new(types.GuestNicInfo)7    nicInfo3 := new(types.GuestNicInfo)8    nicInfo4 := new(types.GuestNicInfo)9    nicInfo5 := new(types.GuestNicInfo)10    nicInfo6 := new(types.GuestNicInfo)11    nicInfo7 := new(types.GuestNicInfo)12    nicInfo8 := new(types.GuestNicInfo)13    nicInfo9 := new(types.GuestNicInfo)14    nicInfo10 := new(types.GuestNicInfo)15    nicInfo11 := new(types.GuestNicInfo)16    nicInfo12 := new(types.GuestNicInfo)17    nicInfo13 := new(types.GuestNicInfo)18    nicInfo14 := new(types.GuestNicInfo)19    nicInfo15 := new(types.GuestNicInfo)20    nicInfo16 := new(types.GuestNicInfo)21    nicInfo17 := new(types.GuestNicInfo)22    nicInfo18 := new(types.GuestNicInfo)

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3    vmimpl.CpuAffinity = &types.CpuAffinityInfo{4        AffinitySet: []int32{1, 2, 3, 4, 5},5    }6    vmimpl.MemoryAffinity = &types.MemoryAffinityInfo{7        AffinitySet: []int32{1, 2, 3, 4, 5},8    }

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3    vm := js.Global.Get("vmimpl").New()4    result := vm.Call("EscapeDoubleQuotes", `hello "world"`)5    fmt.Println(result.String())6}

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3	vm := otto.New()4	vm.Run(`5		var vmimpl = require('vmimpl');6		console.log(vmimpl.EscapeDoubleQuotes('hello world'));7}8module.exports = {9	EscapeDoubleQuotes: function(str) {10		return str.replace(/"/g, '\\"');11	}12}

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3	str := vmimpl.EscapeDoubleQuotes("Hello World")4	fmt.Println(str)5}6import (7func EscapeDoubleQuotes(str string) string {8	return strings.Replace(str, `"`, `\"`, -1)9}10import (11type vm struct {12}13func (v vm) Run() {14	fmt.Println("VM is running")15}16func main() {17	v := vm{name: "vm1"}18	v.Run()19}20import (21func main() {22	v := vmimpl.Vm{name: "vm1"}23	v.Run()24}25import (26type Vm struct {27}28func (v Vm) Run() {29	fmt.Println("VM is running")30}31import (32type vm interface {33	Run()34}35type vmimpl struct {36}37func (v vmimpl) Run() {38	fmt.Println("VM is running")39}40func main() {41	v := vmimpl{name: "vm1"}42	v.Run()43}44import (45func main() {

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3    fmt.Println(types.EscapeDoubleQuotes("abc\"def"))4}5import (6func main() {7    fmt.Println(types.EscapeSingleQuotes("abc'def"))8}9import (10func main() {11    fmt.Println(types.EscapePercent("abc%def"))12}13import (14func main() {15    fmt.Println(types.EscapeDoubleQuotes("abc\"def"))16}17import (18func main() {19    fmt.Println(types.EscapeSingleQuotes("abc'def"))20}21import (

EscapeDoubleQuotes

Using AI Code Generation

1func main() {2    vmimpl.EscapeDoubleQuotes("This is a test")3}4import (5func main() {6    vmimpl.EscapeDoubleQuotes("This is a test")7}8func EscapeDoubleQuotes(s string) string {9}10func EscapeDoubleQuotes(s string) string {11}12func EscapeDoubleQuotes(s string) string {13}14func EscapeDoubleQuotes(s string) string {15}16I'm not sure how to fix this, but I think I've found a bug in the way the compiler handles packages that are in the same directory as the package that imports them. I have a directory structure like this:In the above code, the package vmimpl is imported by both the 2.go and the 1.go files. However, when I try to compile the 1.go file, I get the error:This seems to be because the compiler is trying to compile the 3.go file in the vmimpl directory. I don't think it should be doing this. I've also included the output of go list -f '{{.Dir}}' vmimpl and go list -f '{{.Dir}}' vmimpl/... below. I've also included the output of go list -f '{{.Dir}}' vmimpl and go list -f '{{.Dir}}' vmimpl/... below. I think the problem is in the way the compiler is handling the case where a package is imported from a directory that is not the directory of the package that imports it. I think the problem is in the way the compiler is handling the case where a package is imported from a directory that is not the directory of the package that imports it. I'm not sure what the correct behavior is in this case. I'm not sure what the correct behavior is in this case. I think the correct behavior is to not compile any of the files in the vmimpl directory. I think the correct behavior is to not compile any of the files in the vmimpl directory. I've

EscapeDoubleQuotes

Using AI Code Generation

1import (2func main() {3	fmt.Println(vmimpl.EscapeDoubleQuotes(`"hello" world`))4}5import (6func EscapeDoubleQuotes(s string) string {7	return strings.Replace(s, `"`, `\"`, -1)8}

EscapeDoubleQuotes

Using AI Code Generation

1import vmimpl2vmimpl obj = new vmimpl();3obj.EscapeDoubleQuotes("C:\Program Files\");4using vmimpl;5vmimpl obj = new vmimpl();6obj.EscapeDoubleQuotes("C:\Program Files\");7#importing vmimpl module8import vmimpl9obj = vmimpl.vmimpl()10obj.EscapeDoubleQuotes("C:\Program Files\")11require_once("vmimpl.php");12$obj = new vmimpl();13$obj->EscapeDoubleQuotes("C:\Program Files\");

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