scan.*base.wpConvertToModel - Code Metrics - Inspection of "WordPress Vulnerability Scan (core, plugin, theme)" - future-architect/vuls - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — master (#769)

unknown

created 2019-02-05 07:25 UTC

scan.*base.wpConvertToModel A

↳ Parent: scan/base.go

Complexity

Conditions

Size

Total Lines	2
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	2
dl	0
loc	2
rs	10
c	0
b	0
f	0
nop	0

/* Vuls - Vulnerability Scanner
Copyright (C) 2016  Future Corporation , Japan.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package scan

import (
	"bufio"
	"encoding/json"
	"fmt"
	"net"
	"regexp"
	"strings"
	"time"

	"github.com/future-architect/vuls/config"
	"github.com/future-architect/vuls/models"
	"github.com/hashicorp/go-version"
	"github.com/sirupsen/logrus"
)

type base struct {
	ServerInfo config.ServerInfo
	Distro     config.Distro
	Platform   models.Platform
	osPackages

	log  *logrus.Entry
	errs []error
}

//Command is for check dependence
type Command struct {
	Command string
	Name    string
}

func (l *base) scanWp() (err error) {
	if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 {
		return nil
	}
	if len(l.ServerInfo.WpPath) == 0 {
		return fmt.Errorf("not found : WpPath")
	}
	if len(l.ServerInfo.WpToken) == 0 {
		return fmt.Errorf("not found : WpToken")
	}

	cmds := []Command{{Command: "wp cli", Name: "wp"}, {Command: "curl --help", Name: "curl"}}
	for _, cmd := range cmds {
		if r := exec(l.ServerInfo, cmd.Command, noSudo); !r.isSuccess() {
			return fmt.Errorf("%s command not installed", cmd.Name)
		}
	}

	var vinfos []models.VulnInfo
	if vinfos, err = detectWp(l); err != nil {
		l.log.Errorf("Failed to scan wordpress: %s", err)
		return err
	}
	l.WpVulnInfos = map[string]models.VulnInfo{}
	for _, vinfo := range vinfos {
		l.WpVulnInfos[vinfo.CveID] = vinfo
	}

	return
}

//WpCveInfos is for wpvulndb's json
type WpCveInfos struct {
	ReleaseDate     string      `json:"release_date"`
	ChangelogURL    string      `json:"changelog_url"`
	Status          string      `json:"status"`
	LatestVersion   string      `json:"latest_version"`
	LastUpdated     string      `json:"last_updated"`
	Popular         bool        `json:"popular"`
	Vulnerabilities []WpCveInfo `json:"vulnerabilities"`
	Error           string      `json:"error"`
}

//WpCveInfo is for wpvulndb's json
type WpCveInfo struct {
	ID            int        `json:"id"`
	Title         string     `json:"title"`
	CreatedAt     string     `json:"created_at"`
	UpdatedAt     string     `json:"updated_at"`
	PublishedDate string     `json:"published_date"`
	VulnType      string     `json:"vuln_type"`
	References    References `json:"references"`
	FixedIn       string     `json:"fixed_in"`
}

//References is for wpvulndb's json
type References struct {
	URL     []string `json:"url"`
	Cve     []string `json:"cve"`
	Secunia []string `json:"secunia"`
}

func detectWp(c *base) (vinfos []models.VulnInfo, err error) {
	var coreVulns []models.VulnInfo
	if coreVulns, err = detectWpCore(c); err != nil {
		return
	}
	vinfos = append(vinfos, coreVulns...)

	var themeVulns []models.VulnInfo
	if themeVulns, err = detectWpTheme(c); err != nil {
		return
	}
	vinfos = append(vinfos, themeVulns...)

	var pluginVulns []models.VulnInfo
	if pluginVulns, err = detectWpPlugin(c); err != nil {
		return
	}
	vinfos = append(vinfos, pluginVulns...)

	return
}

func detectWpCore(c *base) (vinfos []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp core version --path=%s", c.ServerInfo.WpPath)

	var coreVersion string
	var r execResult
	if r = exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
		tmp := strings.Split(r.Stdout, ".")
		coreVersion = strings.Join(tmp, "")
		coreVersion = strings.TrimRight(coreVersion, "\r\n")
		if len(coreVersion) == 0 {
			return
		}
	}
	if !r.isSuccess() {
		return vinfos, fmt.Errorf("%s", cmd)
	}

	cmd = fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.ServerInfo.WpToken, coreVersion)
	if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
		coreConvertVinfos(c, r.Stdout)
	}
	return
}

func coreConvertVinfos(c *base, stdout string) (vinfos []models.VulnInfo, err error) {
	data := map[string]WpCveInfos{}
	if err = json.Unmarshal([]byte(stdout), &data); err != nil {
		var jsonError WpCveInfos
		if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil {
			return
		}
		if jsonError.Error == "HTTP Token: Access denied.\n" {
			c.log.Errorf("wordpress: HTTP Token: Access denied.")
		}
	}
	for _, i := range data {
		if len(i.Vulnerabilities) == 0 {
			continue
		}
		for _, vulnerability := range i.Vulnerabilities {
			if len(vulnerability.References.Cve) == 0 {
				continue
			}
			NotFixedYet := false
			if len(vulnerability.FixedIn) == 0 {
				NotFixedYet = true
			}
			var cveIDs []string
			for _, cveNumber := range vulnerability.References.Cve {
				cveIDs = append(cveIDs, "CVE-"+cveNumber)
			}

			for _, cveID := range cveIDs {
				vinfos = append(vinfos, models.VulnInfo{
					CveID: cveID,
					CveContents: models.NewCveContents(
						models.CveContent{
							CveID: cveID,
							Title: vulnerability.Title,
						},
					),
					AffectedPackages: models.PackageStatuses{
						{
							NotFixedYet: NotFixedYet,
						},
					},
				})
			}
		}
	}
	return
}

//WpStatus is for wp command
type WpStatus struct {
	Name    string `json:"name"`
	Status  string `json:"status"`
	Update  string `json:"update"`
	Version string `json:"version"`
}

func detectWpTheme(c *base) (vinfos []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp theme list --path=%s --format=json", c.ServerInfo.WpPath)

	var themes []WpStatus
	var r execResult
	if r = exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
		if err = json.Unmarshal([]byte(r.Stdout), &themes); err != nil {
			return
		}
	}
	if !r.isSuccess() {
		return vinfos, fmt.Errorf("%s", cmd)
	}

	for _, theme := range themes {
		cmd := fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.ServerInfo.WpToken, theme.Name)

		if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
			contentConvertVinfos(c, r.Stdout, theme)
		}
	}
	return
}

func detectWpPlugin(c *base) (vinfos []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp plugin list --path=%s --format=json", c.ServerInfo.WpPath)

	var plugins []WpStatus
	var r execResult
	if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
		if err = json.Unmarshal([]byte(r.Stdout), &plugins); err != nil {
			return
		}
	}
	if !r.isSuccess() {
		return vinfos, fmt.Errorf("%s", cmd)
	}

	for _, plugin := range plugins {
		cmd := fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.ServerInfo.WpToken, plugin.Name)

		if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
			contentConvertVinfos(c, r.Stdout, plugin)
		}
	}
	return
}

func contentConvertVinfos(c *base, stdout string, content WpStatus) (vinfos []models.VulnInfo, err error) {
	data := map[string]WpCveInfos{}
	if err = json.Unmarshal([]byte(stdout), &data); err != nil {
		var jsonError WpCveInfos
		if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil {
			return
		}
		if jsonError.Error == "HTTP Token: Access denied.\n" {
			c.log.Errorf("wordpress: HTTP Token: Access denied.")
		} else {
			c.log.Errorf("wordpress: %s not found", content.Name)
		}
	}

	for _, i := range data {
		if len(i.Vulnerabilities) == 0 {
			continue
		}
		for _, vulnerability := range i.Vulnerabilities {
			if len(vulnerability.References.Cve) == 0 {
				continue
			}
			notFixedYet := false
			if len(vulnerability.FixedIn) == 0 {
				notFixedYet = true
			}
			if len(vulnerability.FixedIn) == 0 {
				vulnerability.FixedIn = "0"
			}
			var v1 *version.Version
			v1, err = version.NewVersion(content.Version)
			if err != nil {
				return
			}
			var v2 *version.Version
			v2, err = version.NewVersion(vulnerability.FixedIn)
			if err != nil {
				return
			}
			if v1.LessThan(v2) {
				var cveIDs []string
				for _, cveNumber := range vulnerability.References.Cve {
					cveIDs = append(cveIDs, "CVE-"+cveNumber)
				}

				for _, cveID := range cveIDs {
					vinfos = append(vinfos, models.VulnInfo{
						CveID: cveID,
						CveContents: models.NewCveContents(
							models.CveContent{
								CveID: cveID,
								Title: vulnerability.Title,
							},
						),
						AffectedPackages: models.PackageStatuses{
							{
								NotFixedYet: notFixedYet,
							},
						},
					})
				}
			}
		}
	}
	return
}

func (l *base) wpConvertToModel() models.VulnInfos {
	return l.WpVulnInfos
}

func (l *base) exec(cmd string, sudo bool) execResult {
	return exec(l.ServerInfo, cmd, sudo, l.log)
}

func (l *base) setServerInfo(c config.ServerInfo) {
	l.ServerInfo = c
}

func (l *base) getServerInfo() config.ServerInfo {
	return l.ServerInfo
}

func (l *base) setDistro(fam, rel string) {
	d := config.Distro{
		Family:  fam,
		Release: rel,
	}
	l.Distro = d

	s := l.getServerInfo()
	s.Distro = d
	l.setServerInfo(s)
}

func (l *base) getDistro() config.Distro {
	return l.Distro
}

func (l *base) setPlatform(p models.Platform) {
	l.Platform = p
}

func (l *base) getPlatform() models.Platform {
	return l.Platform
}

func (l *base) runningKernel() (release, version string, err error) {
	r := l.exec("uname -r", noSudo)
	if !r.isSuccess() {
		return "", "", fmt.Errorf("Failed to SSH: %s", r)
	}
	release = strings.TrimSpace(r.Stdout)

	switch l.Distro.Family {
	case config.Debian:
		r := l.exec("uname -a", noSudo)
		if !r.isSuccess() {
			return "", "", fmt.Errorf("Failed to SSH: %s", r)
		}
		ss := strings.Fields(r.Stdout)
		if 6 < len(ss) {
			version = ss[6]
		}
	}
	return
}

func (l *base) allContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("-c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) runningContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1 --running")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) exitedContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1 --stopped")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) dockerPs(option string) (string, error) {
	cmd := fmt.Sprintf("docker ps %s", option)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("Failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) lxdPs(option string) (string, error) {
	cmd := fmt.Sprintf("lxc list %s", option)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) lxcPs(option string) (string, error) {
	cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
	r := l.exec(cmd, sudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) == 0 {
			break
		}
		if len(fields) != 3 {
			return containers, fmt.Errorf("Unknown format: %s", line)
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[1],
			Image:       fields[2],
		})
	}
	return
}

func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for i, line := range lines[3:] {
		if i%2 == 1 {
			continue
		}
		fields := strings.Fields(strings.Replace(line, "|", " ", -1))
		if len(fields) == 0 {
			break
		}
		if len(fields) != 1 {
			return containers, fmt.Errorf("Unknown format: %s", line)
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[0],
		})
	}
	return
}

func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) == 0 {
			break
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[0],
		})
	}
	return
}

// ip executes ip command and returns IP addresses
func (l *base) ip() ([]string, []string, error) {
	// e.g.
	// 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000\    link/ether 52:54:00:2a:86:4c brd ff:ff:ff:ff:ff:ff
	// 2: eth0    inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
	// 2: eth0    inet6 fe80::5054:ff:fe2a:864c/64 scope link \       valid_lft forever preferred_lft forever
	r := l.exec("/sbin/ip -o addr", noSudo)
	if !r.isSuccess() {
		return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
	}
	ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
	return ipv4Addrs, ipv6Addrs, nil
}

// parseIP parses the results of ip command
func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) < 4 {
			continue
		}
		ip, _, err := net.ParseCIDR(fields[3])
		if err != nil {
			continue
		}
		if !ip.IsGlobalUnicast() {
			continue
		}
		if ipv4 := ip.To4(); ipv4 != nil {
			ipv4Addrs = append(ipv4Addrs, ipv4.String())
		} else {
			ipv6Addrs = append(ipv6Addrs, ip.String())
		}
	}
	return
}

func (l *base) detectPlatform() {
	if l.getServerInfo().Mode.IsOffline() {
		l.setPlatform(models.Platform{Name: "unknown"})
		return
	}
	ok, instanceID, err := l.detectRunningOnAws()
	if err != nil {
		l.setPlatform(models.Platform{Name: "other"})
		return
	}
	if ok {
		l.setPlatform(models.Platform{
			Name:       "aws",
			InstanceID: instanceID,
		})
		return
	}

	//TODO Azure, GCP...
	l.setPlatform(models.Platform{Name: "other"})
	return
}

func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
	if r := l.exec("type curl", noSudo); r.isSuccess() {
		cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
		r := l.exec(cmd, noSudo)
		if r.isSuccess() {
			id := strings.TrimSpace(r.Stdout)
			if !l.isAwsInstanceID(id) {
				return false, "", nil
			}
			return true, id, nil
		}

		switch r.ExitStatus {
		case 28, 7:
			// Not running on AWS
			//  7   Failed to connect to host.
			// 28  operation timeout.
			return false, "", nil
		}
	}

	if r := l.exec("type wget", noSudo); r.isSuccess() {
		cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
		r := l.exec(cmd, noSudo)
		if r.isSuccess() {
			id := strings.TrimSpace(r.Stdout)
			if !l.isAwsInstanceID(id) {
				return false, "", nil
			}
			return true, id, nil
		}

		switch r.ExitStatus {
		case 4, 8:
			// Not running on AWS
			// 4   Network failure
			// 8   Server issued an error response.
			return false, "", nil
		}
	}
	return false, "", fmt.Errorf(
		"Failed to curl or wget to AWS instance metadata on %s. container: %s",
		l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
}

// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)

func (l *base) isAwsInstanceID(str string) bool {
	return awsInstanceIDPattern.MatchString(str)
}

func (l *base) convertToModel() models.ScanResult {
	ctype := l.ServerInfo.ContainerType
	if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
		ctype = "docker"
	}
	container := models.Container{
		ContainerID: l.ServerInfo.Container.ContainerID,
		Name:        l.ServerInfo.Container.Name,
		Image:       l.ServerInfo.Container.Image,
		Type:        ctype,
	}

	errs := []string{}
	for _, e := range l.errs {
		errs = append(errs, fmt.Sprintf("%s", e))
	}

	return models.ScanResult{
		JSONVersion:   models.JSONVersion,
		ServerName:    l.ServerInfo.ServerName,
		ScannedAt:     time.Now(),
		ScanMode:      l.ServerInfo.Mode.String(),
		Family:        l.Distro.Family,
		Release:       l.Distro.Release,
		Container:     container,
		Platform:      l.Platform,
		IPv4Addrs:     l.ServerInfo.IPv4Addrs,
		IPv6Addrs:     l.ServerInfo.IPv6Addrs,
		ScannedCves:   l.VulnInfos,
		RunningKernel: l.Kernel,
		Packages:      l.Packages,
		SrcPackages:   l.SrcPackages,
		Optional:      l.ServerInfo.Optional,
		Errors:        errs,
	}
}

func (l *base) setErrs(errs []error) {
	l.errs = errs
}

func (l *base) getErrs() []error {
	return l.errs
}

const (
	systemd  = "systemd"
	upstart  = "upstart"
	sysVinit = "init"
)

// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
func (l *base) detectInitSystem() (string, error) {
	var f func(string) (string, error)
	f = func(cmd string) (string, error) {
		r := l.exec(cmd, sudo)
		if !r.isSuccess() {
			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
		}
		scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
		scanner.Scan()
		line := strings.TrimSpace(scanner.Text())
		if strings.Contains(line, "systemd") {
			return systemd, nil
		} else if strings.Contains(line, "upstart") {
			return upstart, nil
		} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") ||
			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
			return f("stat /sbin/init")
		} else if line == "File: ‘/sbin/init’" ||
			line == "File: `/sbin/init'" {
			r := l.exec("/sbin/init --version", noSudo)
			if r.isSuccess() {
				if strings.Contains(r.Stdout, "upstart") {
					return upstart, nil
				}
			}
			return sysVinit, nil
		}
		return "", fmt.Errorf("Failed to detect a init system: %s", line)
	}
	return f("stat /proc/1/exe")
}

func (l *base) detectServiceName(pid string) (string, error) {
	cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
	}
	return l.parseSystemctlStatus(r.Stdout), nil
}

func (l *base) parseSystemctlStatus(stdout string) string {
	scanner := bufio.NewScanner(strings.NewReader(stdout))
	scanner.Scan()
	line := scanner.Text()
	ss := strings.Fields(line)
	if len(ss) < 2 || strings.HasPrefix(line, "Failed to get unit for PID") {
		return ""
	}
	return ss[1]
}


1			/* Vuls - Vulnerability Scanner
2			Copyright (C) 2016 Future Corporation , Japan.
3
4			This program is free software: you can redistribute it and/or modify
5			it under the terms of the GNU General Public License as published by
6			the Free Software Foundation, either version 3 of the License, or
7			(at your option) any later version.
8
9			This program is distributed in the hope that it will be useful,
10			but WITHOUT ANY WARRANTY; without even the implied warranty of
11			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			GNU General Public License for more details.
13
14			You should have received a copy of the GNU General Public License
15			along with this program. If not, see <http://www.gnu.org/licenses/>.
16			*/
17
18			package scan
19
20			import (
21			"bufio"
22			"encoding/json"
23			"fmt"
24			"net"
25			"regexp"
26			"strings"
27			"time"
28
29			"github.com/future-architect/vuls/config"
30			"github.com/future-architect/vuls/models"
31			"github.com/hashicorp/go-version"
32			"github.com/sirupsen/logrus"
33			)
34
35			type base struct {
36			ServerInfo config.ServerInfo
37			Distro config.Distro
38			Platform models.Platform
39			osPackages
40
41			log *logrus.Entry
42			errs []error
43			}
44
45			//Command is for check dependence
46			type Command struct {
47			Command string
48			Name string
49			}
50
51			func (l *base) scanWp() (err error) {
52			if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 {
53			return nil
54			}
55			if len(l.ServerInfo.WpPath) == 0 {
56			return fmt.Errorf("not found : WpPath")
57			}
58			if len(l.ServerInfo.WpToken) == 0 {
59			return fmt.Errorf("not found : WpToken")
60			}
61
62			cmds := []Command{{Command: "wp cli", Name: "wp"}, {Command: "curl --help", Name: "curl"}}
63			for _, cmd := range cmds {
64			if r := exec(l.ServerInfo, cmd.Command, noSudo); !r.isSuccess() {
65			return fmt.Errorf("%s command not installed", cmd.Name)
66			}
67			}
68
69			var vinfos []models.VulnInfo
70			if vinfos, err = detectWp(l); err != nil {
71			l.log.Errorf("Failed to scan wordpress: %s", err)
72			return err
73			}
74			l.WpVulnInfos = map[string]models.VulnInfo{}
75			for _, vinfo := range vinfos {
76			l.WpVulnInfos[vinfo.CveID] = vinfo
77			}
78
79			return
80			}
81
82			//WpCveInfos is for wpvulndb's json
83			type WpCveInfos struct {
84			ReleaseDate string `json:"release_date"`
85			ChangelogURL string `json:"changelog_url"`
86			Status string `json:"status"`
87			LatestVersion string `json:"latest_version"`
88			LastUpdated string `json:"last_updated"`
89			Popular bool `json:"popular"`
90			Vulnerabilities []WpCveInfo `json:"vulnerabilities"`
91			Error string `json:"error"`
92			}
93
94			//WpCveInfo is for wpvulndb's json
95			type WpCveInfo struct {
96			ID int `json:"id"`
97			Title string `json:"title"`
98			CreatedAt string `json:"created_at"`
99			UpdatedAt string `json:"updated_at"`
100			PublishedDate string `json:"published_date"`
101			VulnType string `json:"vuln_type"`
102			References References `json:"references"`
103			FixedIn string `json:"fixed_in"`
104			}
105
106			//References is for wpvulndb's json
107			type References struct {
108			URL []string `json:"url"`
109			Cve []string `json:"cve"`
110			Secunia []string `json:"secunia"`
111			}
112
113			func detectWp(c *base) (vinfos []models.VulnInfo, err error) {
114			var coreVulns []models.VulnInfo
115			if coreVulns, err = detectWpCore(c); err != nil {
116			return
117			}
118			vinfos = append(vinfos, coreVulns...)
119
120			var themeVulns []models.VulnInfo
121			if themeVulns, err = detectWpTheme(c); err != nil {
122			return
123			}
124			vinfos = append(vinfos, themeVulns...)
125
126			var pluginVulns []models.VulnInfo
127			if pluginVulns, err = detectWpPlugin(c); err != nil {
128			return
129			}
130			vinfos = append(vinfos, pluginVulns...)
131
132			return
133			}
134
135			func detectWpCore(c *base) (vinfos []models.VulnInfo, err error) {
136			cmd := fmt.Sprintf("wp core version --path=%s", c.ServerInfo.WpPath)
137
138			var coreVersion string
139			var r execResult
140			if r = exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
141			tmp := strings.Split(r.Stdout, ".")
142			coreVersion = strings.Join(tmp, "")
143			coreVersion = strings.TrimRight(coreVersion, "\r\n")
144			if len(coreVersion) == 0 {
145			return
146			}
147			}
148			if !r.isSuccess() {
149			return vinfos, fmt.Errorf("%s", cmd)
150			}
151
152			cmd = fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.ServerInfo.WpToken, coreVersion)
153			if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
154			coreConvertVinfos(c, r.Stdout)
155			}
156			return
157			}
158
159			func coreConvertVinfos(c *base, stdout string) (vinfos []models.VulnInfo, err error) {
160			data := map[string]WpCveInfos{}
161			if err = json.Unmarshal([]byte(stdout), &data); err != nil {
162			var jsonError WpCveInfos
163			if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil {
164			return
165			}
166			if jsonError.Error == "HTTP Token: Access denied.\n" {
167			c.log.Errorf("wordpress: HTTP Token: Access denied.")
168			}
169			}
170			for _, i := range data {
171			if len(i.Vulnerabilities) == 0 {
172			continue
173			}
174			for _, vulnerability := range i.Vulnerabilities {
175			if len(vulnerability.References.Cve) == 0 {
176			continue
177			}
178			NotFixedYet := false
179			if len(vulnerability.FixedIn) == 0 {
180			NotFixedYet = true
181			}
182			var cveIDs []string
183			for _, cveNumber := range vulnerability.References.Cve {
184			cveIDs = append(cveIDs, "CVE-"+cveNumber)
185			}
186
187			for _, cveID := range cveIDs {
188			vinfos = append(vinfos, models.VulnInfo{
189			CveID: cveID,
190			CveContents: models.NewCveContents(
191			models.CveContent{
192			CveID: cveID,
193			Title: vulnerability.Title,
194			},
195			),
196			AffectedPackages: models.PackageStatuses{
197			{
198			NotFixedYet: NotFixedYet,
199			},
200			},
201			})
202			}
203			}
204			}
205			return
206			}
207
208			//WpStatus is for wp command
209			type WpStatus struct {
210			Name string `json:"name"`
211			Status string `json:"status"`
212			Update string `json:"update"`
213			Version string `json:"version"`
214			}
215
216			func detectWpTheme(c *base) (vinfos []models.VulnInfo, err error) {
217			cmd := fmt.Sprintf("wp theme list --path=%s --format=json", c.ServerInfo.WpPath)
218
219			var themes []WpStatus
220			var r execResult
221			if r = exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
222			if err = json.Unmarshal([]byte(r.Stdout), &themes); err != nil {
223			return
224			}
225			}
226			if !r.isSuccess() {
227			return vinfos, fmt.Errorf("%s", cmd)
228			}
229
230			for _, theme := range themes {
231			cmd := fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.ServerInfo.WpToken, theme.Name)
232
233			if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
234			contentConvertVinfos(c, r.Stdout, theme)
235			}
236			}
237			return
238			}
239
240			func detectWpPlugin(c *base) (vinfos []models.VulnInfo, err error) {
241			cmd := fmt.Sprintf("wp plugin list --path=%s --format=json", c.ServerInfo.WpPath)
242
243			var plugins []WpStatus
244			var r execResult
245			if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
246			if err = json.Unmarshal([]byte(r.Stdout), &plugins); err != nil {
247			return
248			}
249			}
250			if !r.isSuccess() {
251			return vinfos, fmt.Errorf("%s", cmd)
252			}
253
254			for _, plugin := range plugins {
255			cmd := fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.ServerInfo.WpToken, plugin.Name)
256
257			if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() {
258			contentConvertVinfos(c, r.Stdout, plugin)
259			}
260			}
261			return
262			}
263
264			func contentConvertVinfos(c *base, stdout string, content WpStatus) (vinfos []models.VulnInfo, err error) {
265			data := map[string]WpCveInfos{}
266			if err = json.Unmarshal([]byte(stdout), &data); err != nil {
267			var jsonError WpCveInfos
268			if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil {
269			return
270			}
271			if jsonError.Error == "HTTP Token: Access denied.\n" {
272			c.log.Errorf("wordpress: HTTP Token: Access denied.")
273			} else {
274			c.log.Errorf("wordpress: %s not found", content.Name)
275			}
276			}
277
278			for _, i := range data {
279			if len(i.Vulnerabilities) == 0 {
280			continue
281			}
282			for _, vulnerability := range i.Vulnerabilities {
283			if len(vulnerability.References.Cve) == 0 {
284			continue
285			}
286			notFixedYet := false
287			if len(vulnerability.FixedIn) == 0 {
288			notFixedYet = true
289			}
290			if len(vulnerability.FixedIn) == 0 {
291			vulnerability.FixedIn = "0"
292			}
293			var v1 *version.Version
294			v1, err = version.NewVersion(content.Version)
295			if err != nil {
296			return
297			}
298			var v2 *version.Version
299			v2, err = version.NewVersion(vulnerability.FixedIn)
300			if err != nil {
301			return
302			}
303			if v1.LessThan(v2) {
304			var cveIDs []string
305			for _, cveNumber := range vulnerability.References.Cve {
306			cveIDs = append(cveIDs, "CVE-"+cveNumber)
307			}
308
309			for _, cveID := range cveIDs {
310			vinfos = append(vinfos, models.VulnInfo{
311			CveID: cveID,
312			CveContents: models.NewCveContents(
313			models.CveContent{
314			CveID: cveID,
315			Title: vulnerability.Title,
316			},
317			),
318			AffectedPackages: models.PackageStatuses{
319			{
320			NotFixedYet: notFixedYet,
321			},
322			},
323			})
324			}
325			}
326			}
327			}
328			return
329			}
330
331			func (l *base) wpConvertToModel() models.VulnInfos {
332			return l.WpVulnInfos
333			}
334
335			func (l *base) exec(cmd string, sudo bool) execResult {
336			return exec(l.ServerInfo, cmd, sudo, l.log)
337			}
338
339			func (l *base) setServerInfo(c config.ServerInfo) {
340			l.ServerInfo = c
341			}
342
343			func (l *base) getServerInfo() config.ServerInfo {
344			return l.ServerInfo
345			}
346
347			func (l *base) setDistro(fam, rel string) {
348			d := config.Distro{
349			Family: fam,
350			Release: rel,
351			}
352			l.Distro = d
353
354			s := l.getServerInfo()
355			s.Distro = d
356			l.setServerInfo(s)
357			}
358
359			func (l *base) getDistro() config.Distro {
360			return l.Distro
361			}
362
363			func (l *base) setPlatform(p models.Platform) {
364			l.Platform = p
365			}
366
367			func (l *base) getPlatform() models.Platform {
368			return l.Platform
369			}
370
371			func (l *base) runningKernel() (release, version string, err error) {
372			r := l.exec("uname -r", noSudo)
373			if !r.isSuccess() {
374			return "", "", fmt.Errorf("Failed to SSH: %s", r)
375			}
376			release = strings.TrimSpace(r.Stdout)
377
378			switch l.Distro.Family {
379			case config.Debian:
380			r := l.exec("uname -a", noSudo)
381			if !r.isSuccess() {
382			return "", "", fmt.Errorf("Failed to SSH: %s", r)
383			}
384			ss := strings.Fields(r.Stdout)
385			if 6 < len(ss) {
386			version = ss[6]
387			}
388			}
389			return
390			}
391
392			func (l *base) allContainers() (containers []config.Container, err error) {
393			switch l.ServerInfo.ContainerType {
394			case "", "docker":
395			stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
396			if err != nil {
397			return containers, err
398			}
399			return l.parseDockerPs(stdout)
400			case "lxd":
401			stdout, err := l.lxdPs("-c n")
402			if err != nil {
403			return containers, err
404			}
405			return l.parseLxdPs(stdout)
406			case "lxc":
407			stdout, err := l.lxcPs("-1")
408			if err != nil {
409			return containers, err
410			}
411			return l.parseLxcPs(stdout)
412			default:
413			return containers, fmt.Errorf(
414			"Not supported yet: %s", l.ServerInfo.ContainerType)
415			}
416			}
417
418			func (l *base) runningContainers() (containers []config.Container, err error) {
419			switch l.ServerInfo.ContainerType {
420			case "", "docker":
421			stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
422			if err != nil {
423			return containers, err
424			}
425			return l.parseDockerPs(stdout)
426			case "lxd":
427			stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
428			if err != nil {
429			return containers, err
430			}
431			return l.parseLxdPs(stdout)
432			case "lxc":
433			stdout, err := l.lxcPs("-1 --running")
434			if err != nil {
435			return containers, err
436			}
437			return l.parseLxcPs(stdout)
438			default:
439			return containers, fmt.Errorf(
440			"Not supported yet: %s", l.ServerInfo.ContainerType)
441			}
442			}
443
444			func (l *base) exitedContainers() (containers []config.Container, err error) {
445			switch l.ServerInfo.ContainerType {
446			case "", "docker":
447			stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
448			if err != nil {
449			return containers, err
450			}
451			return l.parseDockerPs(stdout)
452			case "lxd":
453			stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
454			if err != nil {
455			return containers, err
456			}
457			return l.parseLxdPs(stdout)
458			case "lxc":
459			stdout, err := l.lxcPs("-1 --stopped")
460			if err != nil {
461			return containers, err
462			}
463			return l.parseLxcPs(stdout)
464			default:
465			return containers, fmt.Errorf(
466			"Not supported yet: %s", l.ServerInfo.ContainerType)
467			}
468			}
469
470			func (l *base) dockerPs(option string) (string, error) {
471			cmd := fmt.Sprintf("docker ps %s", option)
472			r := l.exec(cmd, noSudo)
473			if !r.isSuccess() {
474			return "", fmt.Errorf("Failed to SSH: %s", r)
475			}
476			return r.Stdout, nil
477			}
478
479			func (l *base) lxdPs(option string) (string, error) {
480			cmd := fmt.Sprintf("lxc list %s", option)
481			r := l.exec(cmd, noSudo)
482			if !r.isSuccess() {
483			return "", fmt.Errorf("failed to SSH: %s", r)
484			}
485			return r.Stdout, nil
486			}
487
488			func (l *base) lxcPs(option string) (string, error) {
489			cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
490			r := l.exec(cmd, sudo)
491			if !r.isSuccess() {
492			return "", fmt.Errorf("failed to SSH: %s", r)
493			}
494			return r.Stdout, nil
495			}
496
497			func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
498			lines := strings.Split(stdout, "\n")
499			for _, line := range lines {
500			fields := strings.Fields(line)
501			if len(fields) == 0 {
502			break
503			}
504			if len(fields) != 3 {
505			return containers, fmt.Errorf("Unknown format: %s", line)
506			}
507			containers = append(containers, config.Container{
508			ContainerID: fields[0],
509			Name: fields[1],
510			Image: fields[2],
511			})
512			}
513			return
514			}
515
516			func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
517			lines := strings.Split(stdout, "\n")
518			for i, line := range lines[3:] {
519			if i%2 == 1 {
520			continue
521			}
522			fields := strings.Fields(strings.Replace(line, "\|", " ", -1))
523			if len(fields) == 0 {
524			break
525			}
526			if len(fields) != 1 {
527			return containers, fmt.Errorf("Unknown format: %s", line)
528			}
529			containers = append(containers, config.Container{
530			ContainerID: fields[0],
531			Name: fields[0],
532			})
533			}
534			return
535			}
536
537			func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
538			lines := strings.Split(stdout, "\n")
539			for _, line := range lines {
540			fields := strings.Fields(line)
541			if len(fields) == 0 {
542			break
543			}
544			containers = append(containers, config.Container{
545			ContainerID: fields[0],
546			Name: fields[0],
547			})
548			}
549			return
550			}
551
552			// ip executes ip command and returns IP addresses
553			func (l *base) ip() ([]string, []string, error) {
554			// e.g.
555			// 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000\ link/ether 52:54:00:2a:86:4c brd ff:ff:ff:ff:ff:ff
556			// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
557			// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever
558			r := l.exec("/sbin/ip -o addr", noSudo)
559			if !r.isSuccess() {
560			return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
561			}
562			ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
563			return ipv4Addrs, ipv6Addrs, nil
564			}
565
566			// parseIP parses the results of ip command
567			func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
568			lines := strings.Split(stdout, "\n")
569			for _, line := range lines {
570			fields := strings.Fields(line)
571			if len(fields) < 4 {
572			continue
573			}
574			ip, _, err := net.ParseCIDR(fields[3])
575			if err != nil {
576			continue
577			}
578			if !ip.IsGlobalUnicast() {
579			continue
580			}
581			if ipv4 := ip.To4(); ipv4 != nil {
582			ipv4Addrs = append(ipv4Addrs, ipv4.String())
583			} else {
584			ipv6Addrs = append(ipv6Addrs, ip.String())
585			}
586			}
587			return
588			}
589
590			func (l *base) detectPlatform() {
591			if l.getServerInfo().Mode.IsOffline() {
592			l.setPlatform(models.Platform{Name: "unknown"})
593			return
594			}
595			ok, instanceID, err := l.detectRunningOnAws()
596			if err != nil {
597			l.setPlatform(models.Platform{Name: "other"})
598			return
599			}
600			if ok {
601			l.setPlatform(models.Platform{
602			Name: "aws",
603			InstanceID: instanceID,
604			})
605			return
606			}
607
608			//TODO Azure, GCP...
609			l.setPlatform(models.Platform{Name: "other"})
610			return
611			}
612
613			func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
614			if r := l.exec("type curl", noSudo); r.isSuccess() {
615			cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
616			r := l.exec(cmd, noSudo)
617			if r.isSuccess() {
618			id := strings.TrimSpace(r.Stdout)
619			if !l.isAwsInstanceID(id) {
620			return false, "", nil
621			}
622			return true, id, nil
623			}
624
625			switch r.ExitStatus {
626			case 28, 7:
627			// Not running on AWS
628			// 7 Failed to connect to host.
629			// 28 operation timeout.
630			return false, "", nil
631			}
632			}
633
634			if r := l.exec("type wget", noSudo); r.isSuccess() {
635			cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
636			r := l.exec(cmd, noSudo)
637			if r.isSuccess() {
638			id := strings.TrimSpace(r.Stdout)
639			if !l.isAwsInstanceID(id) {
640			return false, "", nil
641			}
642			return true, id, nil
643			}
644
645			switch r.ExitStatus {
646			case 4, 8:
647			// Not running on AWS
648			// 4 Network failure
649			// 8 Server issued an error response.
650			return false, "", nil
651			}
652			}
653			return false, "", fmt.Errorf(
654			"Failed to curl or wget to AWS instance metadata on %s. container: %s",
655			l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
656			}
657
658			// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
659			var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)
660
661			func (l *base) isAwsInstanceID(str string) bool {
662			return awsInstanceIDPattern.MatchString(str)
663			}
664
665			func (l *base) convertToModel() models.ScanResult {
666			ctype := l.ServerInfo.ContainerType
667			if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
668			ctype = "docker"
669			}
670			container := models.Container{
671			ContainerID: l.ServerInfo.Container.ContainerID,
672			Name: l.ServerInfo.Container.Name,
673			Image: l.ServerInfo.Container.Image,
674			Type: ctype,
675			}
676
677			errs := []string{}
678			for _, e := range l.errs {
679			errs = append(errs, fmt.Sprintf("%s", e))
680			}
681
682			return models.ScanResult{
683			JSONVersion: models.JSONVersion,
684			ServerName: l.ServerInfo.ServerName,
685			ScannedAt: time.Now(),
686			ScanMode: l.ServerInfo.Mode.String(),
687			Family: l.Distro.Family,
688			Release: l.Distro.Release,
689			Container: container,
690			Platform: l.Platform,
691			IPv4Addrs: l.ServerInfo.IPv4Addrs,
692			IPv6Addrs: l.ServerInfo.IPv6Addrs,
693			ScannedCves: l.VulnInfos,
694			RunningKernel: l.Kernel,
695			Packages: l.Packages,
696			SrcPackages: l.SrcPackages,
697			Optional: l.ServerInfo.Optional,
698			Errors: errs,
699			}
700			}
701
702			func (l *base) setErrs(errs []error) {
703			l.errs = errs
704			}
705
706			func (l *base) getErrs() []error {
707			return l.errs
708			}
709
710			const (
711			systemd = "systemd"
712			upstart = "upstart"
713			sysVinit = "init"
714			)
715
716			// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
717			func (l *base) detectInitSystem() (string, error) {
718			var f func(string) (string, error)
719			f = func(cmd string) (string, error) {
720			r := l.exec(cmd, sudo)
721			if !r.isSuccess() {
722			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
723			}
724			scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
725			scanner.Scan()
726			line := strings.TrimSpace(scanner.Text())
727			if strings.Contains(line, "systemd") {
728			return systemd, nil
729			} else if strings.Contains(line, "upstart") {
730			return upstart, nil
731			} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") \|\|
732			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
733			return f("stat /sbin/init")
734			} else if line == "File: ‘/sbin/init’" \|\|
735			line == "File: `/sbin/init'" {
736			r := l.exec("/sbin/init --version", noSudo)
737			if r.isSuccess() {
738			if strings.Contains(r.Stdout, "upstart") {
739			return upstart, nil
740			}
741			}
742			return sysVinit, nil
743			}
744			return "", fmt.Errorf("Failed to detect a init system: %s", line)
745			}
746			return f("stat /proc/1/exe")
747			}
748
749			func (l *base) detectServiceName(pid string) (string, error) {
750			cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
751			r := l.exec(cmd, noSudo)
752			if !r.isSuccess() {
753			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
754			}
755			return l.parseSystemctlStatus(r.Stdout), nil
756			}
757
758			func (l *base) parseSystemctlStatus(stdout string) string {
759			scanner := bufio.NewScanner(strings.NewReader(stdout))
760			scanner.Scan()
761			line := scanner.Text()
762			ss := strings.Fields(line)
763			if len(ss) < 2 \|\| strings.HasPrefix(line, "Failed to get unit for PID") {
764			return ""
765			}
766			return ss[1]
767			}
768

future-architect / vuls

Pull Request — master (#769)

scan.*base.wpConvertToModel A

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