netbird/client/system/info_linux.go
Yury Gargay 9bc7b9e897
Add initial support of device posture checks (#1540)
This PR implements the following posture checks:

* Agent minimum version allowed
* OS minimum version allowed
* Geo-location based on connection IP

For the geo-based location, we rely on GeoLite2 databases which are free IP geolocation databases. MaxMind was tested and we provide a script that easily allows to download of all necessary files, see infrastructure_files/download-geolite2.sh.

The OpenAPI spec should extensively cover the life cycle of current version posture checks.
2024-02-20 09:59:56 +01:00

89 lines
2.0 KiB
Go

//go:build !android
// +build !android
package system
import (
"bytes"
"context"
"os"
"os/exec"
"runtime"
"strings"
"time"
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/version"
)
// GetInfo retrieves and parses the system information
func GetInfo(ctx context.Context) *Info {
info := _getInfo()
for strings.Contains(info, "broken pipe") {
info = _getInfo()
time.Sleep(500 * time.Millisecond)
}
releaseInfo := _getReleaseInfo()
for strings.Contains(info, "broken pipe") {
releaseInfo = _getReleaseInfo()
time.Sleep(500 * time.Millisecond)
}
osRelease := strings.Split(releaseInfo, "\n")
var osName string
var osVer string
for _, s := range osRelease {
if strings.HasPrefix(s, "NAME=") {
osName = strings.Split(s, "=")[1]
osName = strings.ReplaceAll(osName, "\"", "")
} else if strings.HasPrefix(s, "VERSION_ID=") {
osVer = strings.Split(s, "=")[1]
osVer = strings.ReplaceAll(osVer, "\"", "")
}
}
osStr := strings.ReplaceAll(info, "\n", "")
osStr = strings.ReplaceAll(osStr, "\r\n", "")
osInfo := strings.Split(osStr, " ")
if osName == "" {
osName = osInfo[3]
}
gio := &Info{Kernel: osInfo[0], Platform: osInfo[2], OS: osName, OSVersion: osVer, GoOS: runtime.GOOS, CPUs: runtime.NumCPU(), KernelVersion: osInfo[1]}
systemHostname, _ := os.Hostname()
gio.Hostname = extractDeviceName(ctx, systemHostname)
gio.WiretrusteeVersion = version.NetbirdVersion()
gio.UIVersion = extractUserAgent(ctx)
return gio
}
func _getInfo() string {
cmd := exec.Command("uname", "-srio")
cmd.Stdin = strings.NewReader("some")
var out bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &stderr
err := cmd.Run()
if err != nil {
log.Warnf("getInfo: %s", err)
}
return out.String()
}
func _getReleaseInfo() string {
cmd := exec.Command("cat", "/etc/os-release")
cmd.Stdin = strings.NewReader("some")
var out bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &stderr
err := cmd.Run()
if err != nil {
log.Warnf("geucwReleaseInfo: %s", err)
}
return out.String()
}