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Fix #1069 install: check static ip

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Squashed commit of the following:

commit 57466233cb
Merge: 2df5f281 867bf545
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Feb 13 18:39:15 2020 +0300

    Merge branch 'master' into 1069-install-static-ip

commit 2df5f281c4
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Feb 13 18:35:54 2020 +0300

    *: lang fix

commit b4649a6b27
Merge: c2785253 f61d5f0f
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Feb 13 16:47:30 2020 +0300

    *(home): fixed issues with setting static IP on Mac

commit c27852537d
Author: Andrey Meshkov <am@adguard.com>
Date:   Thu Feb 13 14:14:30 2020 +0300

    +(dhcpd): added static IP for MacOS

commit f61d5f0f85
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Thu Feb 13 14:13:35 2020 +0300

    + client: show confirm before setting static IP

commit 7afa16fbe7
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Thu Feb 13 13:51:52 2020 +0300

    - client: fix text

commit 019bff0851
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Thu Feb 13 13:49:16 2020 +0300

    - client: pass all params to the check_config request

commit 194bed72f5
Author: Andrey Meshkov <am@adguard.com>
Date:   Wed Feb 12 17:12:16 2020 +0300

    *: fix home_test

commit 9359f6b55f
Merge: ae299058 c5ca2a77
Author: Andrey Meshkov <am@adguard.com>
Date:   Wed Feb 12 15:54:54 2020 +0300

    Merge with master

commit ae2990582d
Author: Andrey Meshkov <am@adguard.com>
Date:   Wed Feb 12 15:53:36 2020 +0300

    *(global): refactoring - moved runtime properties to Context

commit d8d48c5386
Author: Andrey Meshkov <am@adguard.com>
Date:   Wed Feb 12 15:04:25 2020 +0300

    *(dhcpd): refactoring, use dhcpd/network_utils where possible

commit 8d039c572f
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Fri Feb 7 18:37:39 2020 +0300

    - client: fix button position

commit 26c47e59dd
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Fri Feb 7 18:08:56 2020 +0300

    - client: fix static ip description

commit cb12babc46
Author: Andrey Meshkov <am@adguard.com>
Date:   Fri Feb 7 17:08:39 2020 +0300

    *: lower log level for some commands

commit d9001ff848
Author: Andrey Meshkov <am@adguard.com>
Date:   Fri Feb 7 16:17:59 2020 +0300

    *(documentation): updated openapi

commit 1d213d53c8
Merge: 8406d7d2 80861860
Author: Andrey Meshkov <am@adguard.com>
Date:   Fri Feb 7 15:16:46 2020 +0300

    *: merge with master

commit 8406d7d288
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Fri Jan 31 16:52:22 2020 +0300

    - client: fix locales

commit fb476b0117
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jan 31 13:29:03 2020 +0300

    linter

commit 84b5708e71
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jan 31 13:27:53 2020 +0300

    linter

commit 143a86a28a
Author: Simon Zolin <s.zolin@adguard.com>
Date:   Fri Jan 31 13:26:47 2020 +0300

    linter

... and 7 more commits
This commit is contained in:
Andrey Meshkov
2020-02-13 18:42:07 +03:00
parent 867bf5457f
commit 7a3eda02ce
38 changed files with 1319 additions and 781 deletions
Download Patch File Download Diff File Expand all files Collapse all files

175
dhcpd/dhcp_http.go
View File

@@ -2,18 +2,16 @@ package dhcpd
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net"
"net/http"
"os"
"os/exec"
"runtime"
"strings"
"time"
"github.com/AdguardTeam/golibs/file"
"github.com/AdguardTeam/AdGuardHome/util"
"github.com/AdguardTeam/golibs/log"
)
@@ -97,10 +95,9 @@ func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
s.conf.ConfigModified()
if newconfig.Enabled {
staticIP, err := hasStaticIP(newconfig.InterfaceName)
staticIP, err := HasStaticIP(newconfig.InterfaceName)
if !staticIP && err == nil {
err = setStaticIP(newconfig.InterfaceName)
err = SetStaticIP(newconfig.InterfaceName)
if err != nil {
httpError(r, w, http.StatusInternalServerError, "Failed to configure static IP: %s", err)
return
@@ -115,7 +112,7 @@ func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
}
}
type netInterface struct {
type netInterfaceJSON struct {
Name string `json:"name"`
MTU int `json:"mtu"`
HardwareAddr string `json:"hardware_address"`
@@ -123,33 +120,10 @@ type netInterface struct {
Flags string `json:"flags"`
}
// getValidNetInterfaces returns interfaces that are eligible for DNS and/or DHCP
// invalid interface is a ppp interface or the one that doesn't allow broadcasts
func getValidNetInterfaces() ([]net.Interface, error) {
ifaces, err := net.Interfaces()
if err != nil {
return nil, fmt.Errorf("Couldn't get list of interfaces: %s", err)
}
netIfaces := []net.Interface{}
for i := range ifaces {
if ifaces[i].Flags&net.FlagPointToPoint != 0 {
// this interface is ppp, we're not interested in this one
continue
}
iface := ifaces[i]
netIfaces = append(netIfaces, iface)
}
return netIfaces, nil
}
func (s *Server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
response := map[string]interface{}{}
ifaces, err := getValidNetInterfaces()
ifaces, err := util.GetValidNetInterfaces()
if err != nil {
httpError(r, w, http.StatusInternalServerError, "Couldn't get interfaces: %s", err)
return
@@ -170,7 +144,7 @@ func (s *Server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {
return
}
jsonIface := netInterface{
jsonIface := netInterfaceJSON{
Name: iface.Name,
MTU: iface.MTU,
HardwareAddr: iface.HardwareAddr.String(),
@@ -240,14 +214,14 @@ func (s *Server) handleDHCPFindActiveServer(w http.ResponseWriter, r *http.Reque
othSrv["found"] = foundVal
staticIP := map[string]interface{}{}
isStaticIP, err := hasStaticIP(interfaceName)
isStaticIP, err := HasStaticIP(interfaceName)
staticIPStatus := "yes"
if err != nil {
staticIPStatus = "error"
staticIP["error"] = err.Error()
} else if !isStaticIP {
staticIPStatus = "no"
staticIP["ip"] = getFullIP(interfaceName)
staticIP["ip"] = util.GetSubnet(interfaceName)
}
staticIP["static"] = staticIPStatus
@@ -263,137 +237,6 @@ func (s *Server) handleDHCPFindActiveServer(w http.ResponseWriter, r *http.Reque
}
}
// Check if network interface has a static IP configured
func hasStaticIP(ifaceName string) (bool, error) {
if runtime.GOOS == "windows" {
return false, errors.New("Can't detect static IP: not supported on Windows")
}
body, err := ioutil.ReadFile("/etc/dhcpcd.conf")
if err != nil {
return false, err
}
lines := strings.Split(string(body), "\n")
nameLine := fmt.Sprintf("interface %s", ifaceName)
withinInterfaceCtx := false
for _, line := range lines {
line = strings.TrimSpace(line)
if withinInterfaceCtx && len(line) == 0 {
// an empty line resets our state
withinInterfaceCtx = false
}
if len(line) == 0 || line[0] == '#' {
continue
}
line = strings.TrimSpace(line)
if !withinInterfaceCtx {
if line == nameLine {
// we found our interface
withinInterfaceCtx = true
}
} else {
if strings.HasPrefix(line, "interface ") {
// we found another interface - reset our state
withinInterfaceCtx = false
continue
}
if strings.HasPrefix(line, "static ip_address=") {
return true, nil
}
}
}
return false, nil
}
// Get IP address with netmask
func getFullIP(ifaceName string) string {
cmd := exec.Command("ip", "-oneline", "-family", "inet", "address", "show", ifaceName)
log.Tracef("executing %s %v", cmd.Path, cmd.Args)
d, err := cmd.Output()
if err != nil || cmd.ProcessState.ExitCode() != 0 {
return ""
}
fields := strings.Fields(string(d))
if len(fields) < 4 {
return ""
}
_, _, err = net.ParseCIDR(fields[3])
if err != nil {
return ""
}
return fields[3]
}
// Get gateway IP address
func getGatewayIP(ifaceName string) string {
cmd := exec.Command("ip", "route", "show", "dev", ifaceName)
log.Tracef("executing %s %v", cmd.Path, cmd.Args)
d, err := cmd.Output()
if err != nil || cmd.ProcessState.ExitCode() != 0 {
return ""
}
fields := strings.Fields(string(d))
if len(fields) < 3 || fields[0] != "default" {
return ""
}
ip := net.ParseIP(fields[2])
if ip == nil {
return ""
}
return fields[2]
}
// Set a static IP for network interface
func setStaticIP(ifaceName string) error {
ip := getFullIP(ifaceName)
if len(ip) == 0 {
return errors.New("Can't get IP address")
}
body, err := ioutil.ReadFile("/etc/dhcpcd.conf")
if err != nil {
return err
}
ip4, _, err := net.ParseCIDR(ip)
if err != nil {
return err
}
add := fmt.Sprintf("\ninterface %s\nstatic ip_address=%s\n",
ifaceName, ip)
body = append(body, []byte(add)...)
gatewayIP := getGatewayIP(ifaceName)
if len(gatewayIP) != 0 {
add = fmt.Sprintf("static routers=%s\n",
gatewayIP)
body = append(body, []byte(add)...)
}
add = fmt.Sprintf("static domain_name_servers=%s\n\n",
ip4)
body = append(body, []byte(add)...)
err = file.SafeWrite("/etc/dhcpcd.conf", body)
if err != nil {
return err
}
return nil
}
func (s *Server) handleDHCPAddStaticLease(w http.ResponseWriter, r *http.Request) {
lj := staticLeaseJSON{}

312
dhcpd/network_utils.go Normal file
View File

@@ -0,0 +1,312 @@
package dhcpd
import (
"errors"
"fmt"
"io/ioutil"
"net"
"os/exec"
"regexp"
"runtime"
"strings"
"github.com/AdguardTeam/AdGuardHome/util"
"github.com/AdguardTeam/golibs/file"
"github.com/AdguardTeam/golibs/log"
)
// Check if network interface has a static IP configured
// Supports: Raspbian.
func HasStaticIP(ifaceName string) (bool, error) {
if runtime.GOOS == "linux" {
body, err := ioutil.ReadFile("/etc/dhcpcd.conf")
if err != nil {
return false, err
}
return hasStaticIPDhcpcdConf(string(body), ifaceName), nil
}
if runtime.GOOS == "darwin" {
return hasStaticIPDarwin(ifaceName)
}
return false, fmt.Errorf("Cannot check if IP is static: not supported on %s", runtime.GOOS)
}
// Set a static IP for the specified network interface
func SetStaticIP(ifaceName string) error {
if runtime.GOOS == "linux" {
return setStaticIPDhcpdConf(ifaceName)
}
if runtime.GOOS == "darwin" {
return setStaticIPDarwin(ifaceName)
}
return fmt.Errorf("Cannot set static IP on %s", runtime.GOOS)
}
// for dhcpcd.conf
func hasStaticIPDhcpcdConf(dhcpConf, ifaceName string) bool {
lines := strings.Split(dhcpConf, "\n")
nameLine := fmt.Sprintf("interface %s", ifaceName)
withinInterfaceCtx := false
for _, line := range lines {
line = strings.TrimSpace(line)
if withinInterfaceCtx && len(line) == 0 {
// an empty line resets our state
withinInterfaceCtx = false
}
if len(line) == 0 || line[0] == '#' {
continue
}
line = strings.TrimSpace(line)
if !withinInterfaceCtx {
if line == nameLine {
// we found our interface
withinInterfaceCtx = true
}
} else {
if strings.HasPrefix(line, "interface ") {
// we found another interface - reset our state
withinInterfaceCtx = false
continue
}
if strings.HasPrefix(line, "static ip_address=") {
return true
}
}
}
return false
}
// Get gateway IP address
func getGatewayIP(ifaceName string) string {
cmd := exec.Command("ip", "route", "show", "dev", ifaceName)
log.Tracef("executing %s %v", cmd.Path, cmd.Args)
d, err := cmd.Output()
if err != nil || cmd.ProcessState.ExitCode() != 0 {
return ""
}
fields := strings.Fields(string(d))
if len(fields) < 3 || fields[0] != "default" {
return ""
}
ip := net.ParseIP(fields[2])
if ip == nil {
return ""
}
return fields[2]
}
// setStaticIPDhcpdConf - updates /etc/dhcpd.conf and sets the current IP address to be static
func setStaticIPDhcpdConf(ifaceName string) error {
ip := util.GetSubnet(ifaceName)
if len(ip) == 0 {
return errors.New("Can't get IP address")
}
ip4, _, err := net.ParseCIDR(ip)
if err != nil {
return err
}
gatewayIP := getGatewayIP(ifaceName)
add := updateStaticIPDhcpcdConf(ifaceName, ip, gatewayIP, ip4.String())
body, err := ioutil.ReadFile("/etc/dhcpcd.conf")
if err != nil {
return err
}
body = append(body, []byte(add)...)
err = file.SafeWrite("/etc/dhcpcd.conf", body)
if err != nil {
return err
}
return nil
}
// updates dhcpd.conf content -- sets static IP address there
// for dhcpcd.conf
func updateStaticIPDhcpcdConf(ifaceName, ip, gatewayIP, dnsIP string) string {
var body []byte
add := fmt.Sprintf("\ninterface %s\nstatic ip_address=%s\n",
ifaceName, ip)
body = append(body, []byte(add)...)
if len(gatewayIP) != 0 {
add = fmt.Sprintf("static routers=%s\n",
gatewayIP)
body = append(body, []byte(add)...)
}
add = fmt.Sprintf("static domain_name_servers=%s\n\n",
dnsIP)
body = append(body, []byte(add)...)
return string(body)
}
// Check if network interface has a static IP configured
// Supports: MacOS.
func hasStaticIPDarwin(ifaceName string) (bool, error) {
portInfo, err := getCurrentHardwarePortInfo(ifaceName)
if err != nil {
return false, err
}
return portInfo.static, nil
}
// setStaticIPDarwin - uses networksetup util to set the current IP address to be static
// Additionally it configures the current DNS servers as well
func setStaticIPDarwin(ifaceName string) error {
portInfo, err := getCurrentHardwarePortInfo(ifaceName)
if err != nil {
return err
}
if portInfo.static {
return errors.New("IP address is already static")
}
dnsAddrs, err := getEtcResolvConfServers()
if err != nil {
return err
}
args := make([]string, 0)
args = append(args, "-setdnsservers", portInfo.name)
args = append(args, dnsAddrs...)
// Setting DNS servers is necessary when configuring a static IP
code, _, err := util.RunCommand("networksetup", args...)
if err != nil {
return err
}
if code != 0 {
return fmt.Errorf("Failed to set DNS servers, code=%d", code)
}
// Actually configures hardware port to have static IP
code, _, err = util.RunCommand("networksetup", "-setmanual",
portInfo.name, portInfo.ip, portInfo.subnet, portInfo.gatewayIP)
if err != nil {
return err
}
if code != 0 {
return fmt.Errorf("Failed to set DNS servers, code=%d", code)
}
return nil
}
// getCurrentHardwarePortInfo gets information the specified network interface
func getCurrentHardwarePortInfo(ifaceName string) (hardwarePortInfo, error) {
// First of all we should find hardware port name
m := getNetworkSetupHardwareReports()
hardwarePort, ok := m[ifaceName]
if !ok {
return hardwarePortInfo{}, fmt.Errorf("Could not find hardware port for %s", ifaceName)
}
return getHardwarePortInfo(hardwarePort)
}
// getNetworkSetupHardwareReports parses the output of the `networksetup -listallhardwareports` command
// it returns a map where the key is the interface name, and the value is the "hardware port"
// returns nil if it fails to parse the output
func getNetworkSetupHardwareReports() map[string]string {
_, out, err := util.RunCommand("networksetup", "-listallhardwareports")
if err != nil {
return nil
}
re, err := regexp.Compile("Hardware Port: (.*?)\nDevice: (.*?)\n")
if err != nil {
return nil
}
m := make(map[string]string, 0)
matches := re.FindAllStringSubmatch(out, -1)
for i := range matches {
port := matches[i][1]
device := matches[i][2]
m[device] = port
}
return m
}
// hardwarePortInfo - information obtained using MacOS networksetup
// about the current state of the internet connection
type hardwarePortInfo struct {
name string
ip string
subnet string
gatewayIP string
static bool
}
func getHardwarePortInfo(hardwarePort string) (hardwarePortInfo, error) {
h := hardwarePortInfo{}
_, out, err := util.RunCommand("networksetup", "-getinfo", hardwarePort)
if err != nil {
return h, err
}
re := regexp.MustCompile("IP address: (.*?)\nSubnet mask: (.*?)\nRouter: (.*?)\n")
match := re.FindStringSubmatch(out)
if len(match) == 0 {
return h, errors.New("Could not find hardware port info")
}
h.name = hardwarePort
h.ip = match[1]
h.subnet = match[2]
h.gatewayIP = match[3]
if strings.Index(out, "Manual Configuration") == 0 {
h.static = true
}
return h, nil
}
// Gets a list of nameservers currently configured in the /etc/resolv.conf
func getEtcResolvConfServers() ([]string, error) {
body, err := ioutil.ReadFile("/etc/resolv.conf")
if err != nil {
return nil, err
}
re := regexp.MustCompile("nameserver ([a-zA-Z0-9.:]+)")
matches := re.FindAllStringSubmatch(string(body), -1)
if len(matches) == 0 {
return nil, errors.New("Found no DNS servers in /etc/resolv.conf")
}
addrs := make([]string, 0)
for i := range matches {
addrs = append(addrs, matches[i][1])
}
return addrs, nil
}

61
dhcpd/network_utils_test.go Normal file
View File

@@ -0,0 +1,61 @@
package dhcpd
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestHasStaticIPDhcpcdConf(t *testing.T) {
dhcpdConf := `#comment
# comment
interface eth0
static ip_address=192.168.0.1/24
# interface wlan0
static ip_address=192.168.1.1/24
# comment
`
assert.True(t, !hasStaticIPDhcpcdConf(dhcpdConf, "wlan0"))
dhcpdConf = `#comment
# comment
interface eth0
static ip_address=192.168.0.1/24
# interface wlan0
static ip_address=192.168.1.1/24
# comment
interface wlan0
# comment
static ip_address=192.168.2.1/24
`
assert.True(t, hasStaticIPDhcpcdConf(dhcpdConf, "wlan0"))
}
func TestSetStaticIPDhcpcdConf(t *testing.T) {
dhcpcdConf := `
interface wlan0
static ip_address=192.168.0.2/24
static routers=192.168.0.1
static domain_name_servers=192.168.0.2
`
s := updateStaticIPDhcpcdConf("wlan0", "192.168.0.2/24", "192.168.0.1", "192.168.0.2")
assert.Equal(t, dhcpcdConf, s)
// without gateway
dhcpcdConf = `
interface wlan0
static ip_address=192.168.0.2/24
static domain_name_servers=192.168.0.2
`
s = updateStaticIPDhcpcdConf("wlan0", "192.168.0.2/24", "", "192.168.0.2")
assert.Equal(t, dhcpcdConf, s)
}