func getLSB() (*LSB, error) {
ret := &LSB{}
if common.PathExists(common.HostEtc("lsb-release")) {
contents, err := common.ReadLines(common.HostEtc("lsb-release"))
if err != nil {
return ret, err // return empty
}
for _, line := range contents {
field := strings.Split(line, "=")
if len(field) < 2 {
continue
}
switch field[0] {
case "DISTRIB_ID":
ret.ID = field[1]
case "DISTRIB_RELEASE":
ret.Release = field[1]
case "DISTRIB_CODENAME":
ret.Codename = field[1]
case "DISTRIB_DESCRIPTION":
ret.Description = field[1]
}
}
} else if common.PathExists("/usr/bin/lsb_release") {
lsb_release, err := exec.LookPath("/usr/bin/lsb_release")
if err != nil {
return ret, err
}
out, err := exec.Command(lsb_release).Output()
if err != nil {
return ret, err
}
for _, line := range strings.Split(string(out), "\n") {
field := strings.Split(line, ":")
if len(field) < 2 {
continue
}
switch field[0] {
case "Distributor ID":
ret.ID = field[1]
case "Release":
ret.Release = field[1]
case "Codename":
ret.Codename = field[1]
case "Description":
ret.Description = field[1]
}
}
}
return ret, nil
}
func TestNetFilterCounters(t *testing.T) {
if ci := os.Getenv("CI"); ci != "" { // skip if test on drone.io
return
}
if runtime.GOOS == "linux" {
// some test environment has not the path.
if !common.PathExists("/proc/sys/net/netfilter/nf_conntrackCount") {
t.SkipNow()
}
}
v, err := FilterCounters()
if err != nil {
t.Errorf("could not get NetConnections: %v", err)
}
if len(v) == 0 {
t.Errorf("could not get NetConnections: %v", v)
}
for _, vv := range v {
if vv.ConnTrackMax == 0 {
t.Errorf("nf_conntrackMax needs to be greater than zero: %v", vv)
}
}
}
func processInet(file string, kind netConnectionKindType, inodes map[string][]inodeMap, filterPid int32) ([]connTmp, error) {
if strings.HasSuffix(file, "6") && !common.PathExists(file) {
// IPv6 not supported, return empty.
return []connTmp{}, nil
}
lines, err := common.ReadLines(file)
if err != nil {
return nil, err
}
var ret []connTmp
// skip first line
for _, line := range lines[1:] {
l := strings.Fields(line)
if len(l) < 10 {
continue
}
laddr := l[1]
raddr := l[2]
status := l[3]
inode := l[9]
pid := int32(0)
fd := uint32(0)
i, exists := inodes[inode]
if exists {
pid = i[0].pid
fd = i[0].fd
}
if filterPid > 0 && filterPid != pid {
continue
}
if kind.sockType == syscall.SOCK_STREAM {
status = TCPStatuses[status]
} else {
status = "NONE"
}
la, err := decodeAddress(kind.family, laddr)
if err != nil {
continue
}
ra, err := decodeAddress(kind.family, raddr)
if err != nil {
continue
}
ret = append(ret, connTmp{
fd: fd,
family: kind.family,
sockType: kind.sockType,
laddr: la,
raddr: ra,
status: status,
pid: pid,
})
}
return ret, nil
}
func Info() (*InfoStat, error) {
ret := &InfoStat{
OS: runtime.GOOS,
}
hostname, err := os.Hostname()
if err == nil {
ret.Hostname = hostname
}
platform, family, version, err := PlatformInformation()
if err == nil {
ret.Platform = platform
ret.PlatformFamily = family
ret.PlatformVersion = version
}
kernelVersion, err := KernelVersion()
if err == nil {
ret.KernelVersion = kernelVersion
}
system, role, err := Virtualization()
if err == nil {
ret.VirtualizationSystem = system
ret.VirtualizationRole = role
}
boot, err := BootTime()
if err == nil {
ret.BootTime = boot
ret.Uptime = uptime(boot)
}
if numProcs, err := common.NumProcs(); err == nil {
ret.Procs = numProcs
}
sysProductUUID := common.HostSys("class/dmi/id/product_uuid")
switch {
case common.PathExists(sysProductUUID):
lines, err := common.ReadLines(sysProductUUID)
if err == nil && len(lines) > 0 && lines[0] != "" {
ret.HostID = lines[0]
break
}
fallthrough
default:
values, err := common.DoSysctrl("kernel.random.boot_id")
if err == nil && len(values) == 1 && values[0] != "" {
ret.HostID = values[0]
}
}
return ret, nil
}
func KernelVersion() (version string, err error) {
filename := common.HostProc("sys/kernel/osrelease")
if common.PathExists(filename) {
contents, err := common.ReadLines(filename)
if err != nil {
return "", err
}
if len(contents) > 0 {
version = contents[0]
}
}
return version, nil
}
func Users() ([]UserStat, error) {
utmpfile := "/var/run/utx.active"
if !common.PathExists(utmpfile) {
utmpfile = "/var/run/utmp" // before 9.0
return getUsersFromUtmp(utmpfile)
}
var ret []UserStat
file, err := os.Open(utmpfile)
if err != nil {
return ret, err
}
buf, err := ioutil.ReadAll(file)
if err != nil {
return ret, err
}
u := Utmpx{}
entrySize := int(unsafe.Sizeof(u)) - 3
entrySize = 197 // TODO: why should 197
count := len(buf) / entrySize
for i := 0; i < count; i++ {
b := buf[i*entrySize : i*entrySize+entrySize]
var u Utmpx
br := bytes.NewReader(b)
err := binary.Read(br, binary.LittleEndian, &u)
if err != nil || u.Type != 4 {
continue
}
sec := (binary.LittleEndian.Uint32(u.Tv.Sec[:])) / 2 // TODO:
user := UserStat{
User: common.IntToString(u.User[:]),
Terminal: common.IntToString(u.Line[:]),
Host: common.IntToString(u.Host[:]),
Started: int(sec),
}
ret = append(ret, user)
}
return ret, nil
}
func Partitions(all bool) ([]PartitionStat, error) {
var ret []PartitionStat
count, err := Getfsstat(nil, MntWait)
if err != nil {
return ret, err
}
fs := make([]Statfs_t, count)
_, err = Getfsstat(fs, MntWait)
for _, stat := range fs {
opts := "rw"
if stat.Flags&MntReadOnly != 0 {
opts = "ro"
}
if stat.Flags&MntSynchronous != 0 {
opts += ",sync"
}
if stat.Flags&MntNoExec != 0 {
opts += ",noexec"
}
if stat.Flags&MntNoSuid != 0 {
opts += ",nosuid"
}
if stat.Flags&MntUnion != 0 {
opts += ",union"
}
if stat.Flags&MntAsync != 0 {
opts += ",async"
}
if stat.Flags&MntSuidDir != 0 {
opts += ",suiddir"
}
if stat.Flags&MntSoftDep != 0 {
opts += ",softdep"
}
if stat.Flags&MntNoSymFollow != 0 {
opts += ",nosymfollow"
}
if stat.Flags&MntGEOMJournal != 0 {
opts += ",gjounalc"
}
if stat.Flags&MntMultilabel != 0 {
opts += ",multilabel"
}
if stat.Flags&MntACLs != 0 {
opts += ",acls"
}
if stat.Flags&MntNoATime != 0 {
opts += ",noattime"
}
if stat.Flags&MntClusterRead != 0 {
opts += ",nocluster"
}
if stat.Flags&MntClusterWrite != 0 {
opts += ",noclusterw"
}
if stat.Flags&MntNFS4ACLs != 0 {
opts += ",nfs4acls"
}
d := PartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
if all == false {
if !path.IsAbs(d.Device) || !common.PathExists(d.Device) {
continue
}
}
ret = append(ret, d)
}
return ret, nil
}
func Partitions(all bool) ([]PartitionStat, error) {
var ret []PartitionStat
// get length
count, err := syscall.Getfsstat(nil, MNT_WAIT)
if err != nil {
return ret, err
}
fs := make([]Statfs, count)
_, err = Getfsstat(fs, MNT_WAIT)
for _, stat := range fs {
opts := "rw"
if stat.Flags&MNT_RDONLY != 0 {
opts = "ro"
}
if stat.Flags&MNT_SYNCHRONOUS != 0 {
opts += ",sync"
}
if stat.Flags&MNT_NOEXEC != 0 {
opts += ",noexec"
}
if stat.Flags&MNT_NOSUID != 0 {
opts += ",nosuid"
}
if stat.Flags&MNT_UNION != 0 {
opts += ",union"
}
if stat.Flags&MNT_ASYNC != 0 {
opts += ",async"
}
if stat.Flags&MNT_SUIDDIR != 0 {
opts += ",suiddir"
}
if stat.Flags&MNT_SOFTDEP != 0 {
opts += ",softdep"
}
if stat.Flags&MNT_NOSYMFOLLOW != 0 {
opts += ",nosymfollow"
}
if stat.Flags&MNT_GJOURNAL != 0 {
opts += ",gjounalc"
}
if stat.Flags&MNT_MULTILABEL != 0 {
opts += ",multilabel"
}
if stat.Flags&MNT_ACLS != 0 {
opts += ",acls"
}
if stat.Flags&MNT_NOATIME != 0 {
opts += ",noattime"
}
if stat.Flags&MNT_NOCLUSTERR != 0 {
opts += ",nocluster"
}
if stat.Flags&MNT_NOCLUSTERW != 0 {
opts += ",noclusterw"
}
if stat.Flags&MNT_NFS4ACLS != 0 {
opts += ",nfs4acls"
}
d := PartitionStat{
Device: common.IntToString(stat.Mntfromname[:]),
Mountpoint: common.IntToString(stat.Mntonname[:]),
Fstype: common.IntToString(stat.Fstypename[:]),
Opts: opts,
}
if all == false {
if !path.IsAbs(d.Device) || !common.PathExists(d.Device) {
continue
}
}
ret = append(ret, d)
}
return ret, nil
}
func Virtualization() (string, string, error) {
var system string
var role string
filename := common.HostProc("xen")
if common.PathExists(filename) {
system = "xen"
role = "guest" // assume guest
if common.PathExists(filename + "/capabilities") {
contents, err := common.ReadLines(filename + "/capabilities")
if err == nil {
if common.StringsHas(contents, "control_d") {
role = "host"
}
}
}
}
filename = common.HostProc("modules")
if common.PathExists(filename) {
contents, err := common.ReadLines(filename)
if err == nil {
if common.StringsContains(contents, "kvm") {
system = "kvm"
role = "host"
} else if common.StringsContains(contents, "vboxdrv") {
system = "vbox"
role = "host"
} else if common.StringsContains(contents, "vboxguest") {
system = "vbox"
role = "guest"
}
}
}
filename = common.HostProc("cpuinfo")
if common.PathExists(filename) {
contents, err := common.ReadLines(filename)
if err == nil {
if common.StringsHas(contents, "QEMU Virtual CPU") ||
common.StringsHas(contents, "Common KVM processor") ||
common.StringsHas(contents, "Common 32-bit KVM processor") {
system = "kvm"
role = "guest"
}
}
}
filename = common.HostProc()
if common.PathExists(filename + "/bc/0") {
system = "openvz"
role = "host"
} else if common.PathExists(filename + "/vz") {
system = "openvz"
role = "guest"
}
// not use dmidecode because it requires root
if common.PathExists(filename + "/self/status") {
contents, err := common.ReadLines(filename + "/self/status")
if err == nil {
if common.StringsHas(contents, "s_context:") ||
common.StringsHas(contents, "VxID:") {
system = "linux-vserver"
}
// TODO: guest or host
}
}
if common.PathExists(filename + "/self/cgroup") {
contents, err := common.ReadLines(filename + "/self/cgroup")
if err == nil {
if common.StringsHas(contents, "lxc") ||
common.StringsHas(contents, "docker") {
system = "lxc"
role = "guest"
} else if common.PathExists("/usr/bin/lxc-version") { // TODO: which
system = "lxc"
role = "host"
}
}
}
return system, role, nil
}
func PlatformInformation() (platform string, family string, version string, err error) {
lsb, err := getLSB()
if err != nil {
lsb = &LSB{}
}
if common.PathExists(common.HostEtc("oracle-release")) {
platform = "oracle"
contents, err := common.ReadLines(common.HostEtc("oracle-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("enterprise-release")) {
platform = "oracle"
contents, err := common.ReadLines(common.HostEtc("enterprise-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("debian_version")) {
if lsb.ID == "Ubuntu" {
platform = "ubuntu"
version = lsb.Release
} else if lsb.ID == "LinuxMint" {
platform = "linuxmint"
version = lsb.Release
} else {
if common.PathExists("/usr/bin/raspi-config") {
platform = "raspbian"
} else {
platform = "debian"
}
contents, err := common.ReadLines(common.HostEtc("debian_version"))
if err == nil {
version = contents[0]
}
}
} else if common.PathExists(common.HostEtc("redhat-release")) {
contents, err := common.ReadLines(common.HostEtc("redhat-release"))
if err == nil {
version = getRedhatishVersion(contents)
platform = getRedhatishPlatform(contents)
}
} else if common.PathExists(common.HostEtc("system-release")) {
contents, err := common.ReadLines(common.HostEtc("system-release"))
if err == nil {
version = getRedhatishVersion(contents)
platform = getRedhatishPlatform(contents)
}
} else if common.PathExists(common.HostEtc("gentoo-release")) {
platform = "gentoo"
contents, err := common.ReadLines(common.HostEtc("gentoo-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("SuSE-release")) {
contents, err := common.ReadLines(common.HostEtc("SuSE-release"))
if err == nil {
version = getSuseVersion(contents)
platform = getSusePlatform(contents)
}
// TODO: slackware detecion
} else if common.PathExists(common.HostEtc("arch-release")) {
platform = "arch"
version = lsb.Release
} else if lsb.ID == "RedHat" {
platform = "redhat"
version = lsb.Release
} else if lsb.ID == "Amazon" {
platform = "amazon"
version = lsb.Release
} else if lsb.ID == "ScientificSL" {
platform = "scientific"
version = lsb.Release
} else if lsb.ID == "XenServer" {
platform = "xenserver"
version = lsb.Release
} else if lsb.ID != "" {
platform = strings.ToLower(lsb.ID)
version = lsb.Release
}
switch platform {
case "debian", "ubuntu", "linuxmint", "raspbian":
family = "debian"
case "fedora":
family = "fedora"
case "oracle", "centos", "redhat", "scientific", "enterpriseenterprise", "amazon", "xenserver", "cloudlinux", "ibm_powerkvm":
family = "rhel"
case "suse", "opensuse":
family = "suse"
case "gentoo":
family = "gentoo"
case "slackware":
family = "slackware"
case "arch":
family = "arch"
case "exherbo":
family = "exherbo"
}
return platform, family, version, nil
}