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Pull request: 2302 static ip

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Merge in DNS/adguard-home from 2302-static-ip to master

Closes #2302.

Squashed commit of the following:

commit e62b7b033861f1c55f0d06811ca005b3934ddc5b
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 19:38:15 2020 +0300

    all: format changelog

commit 4127aa7630674ddcfe84f712e6c7c8d06b1cab9a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 19:24:53 2020 +0300

    all: fix changelog typo

commit f8a432056d3682facae0cdec99d7d80a5c2bd9b5
Merge: b809a866e e4383189a
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 19:22:27 2020 +0300

    Merge branch 'master' into 2302-static-ip

commit b809a866e49147354f9c6952b2f958b6b56ad873
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 19:20:05 2020 +0300

    all: log changes

commit 248c35ba411af731d6eae755a901cdbc77980628
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 18:57:15 2020 +0300

    sysutil: use bufio.Scanner

commit 0dc19dd5c232fbe9552a2b0d846e048274d73a74
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 17:26:18 2020 +0300

    sysutil: fix linux tests

commit 91202d6763595cff187040516dd1db10a20762b7
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 17:15:29 2020 +0300

    sysutil: fix linux files

commit 40fbdbb95876322ebaeef1cbdaa8e3299b83ca7e
Merge: d9a43ffb6 9b963fc77
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 16:52:35 2020 +0300

    Merge branch 'master' into 2302-static-ip

commit d9a43ffb68a2ddbbcf185b69fc75aed139cd6919
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 16:49:22 2020 +0300

    sysutil: add main test

commit bfef89186035ab0423d23246d46511584c26534c
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Mon Dec 7 16:21:59 2020 +0300

    sysutil: improve code quality

commit a5f57a373f736971fdeb0c03371da7c8138b3a82
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Fri Dec 4 14:14:08 2020 +0300

    all: move system functionality from dhcpd package to sysutil.

commit 020b51864f85a39ca80e2b4e06faeb47cf318e11
Merge: 967e111a6 ab8defdb0
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Dec 2 14:53:43 2020 +0300

    Merge branch 'master' into 2302-static-ip

commit 967e111a663c18b5f4a87f3ae38d076f3ab6c200
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Wed Dec 2 13:52:17 2020 +0300

    all: improve code quality
This commit is contained in:
Eugene Burkov
2020-12-07 19:48:24 +03:00
parent e4383189a5
commit 2313eda123
21 changed files with 533 additions and 402 deletions
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44
internal/sysutil/net.go Normal file
View File

@@ -0,0 +1,44 @@
package sysutil
import (
"net"
"os/exec"
"strings"
"github.com/AdguardTeam/golibs/log"
)
// IfaceHasStaticIP checks if interface is configured to have static IP address.
func IfaceHasStaticIP(ifaceName string) (has bool, err error) {
return ifaceHasStaticIP(ifaceName)
}
// IfaceSetStaticIP sets static IP address for network interface.
func IfaceSetStaticIP(ifaceName string) (err error) {
return ifaceSetStaticIP(ifaceName)
}
// GatewayIP returns IP address of interface's gateway.
func GatewayIP(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))
// The meaningful "ip route" command output should contain the word
// "default" at first field and default gateway IP address at third
// field.
if len(fields) < 3 || fields[0] != "default" {
return ""
}
ip := net.ParseIP(fields[2])
if ip == nil {
return ""
}
return fields[2]
}