direktil/initrd
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This commit is contained in:
Mikaël Cluseau 2024-01-20 16:41:54 +01:00
parent 5ab8b74041
commit 6bf1d1ccf2
18 changed files with 205 additions and 170 deletions
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12
Dockerfile
View File

@ -1,12 +1,14 @@
from golang:1.21.5-alpine3.19 as build
from golang:1.21.6-alpine3.19 as build
workdir /src
copy go.mod go.sum .
run go mod download
copy . .
run go test ./...
run go build -o /go/bin/init -trimpath .
run \
--mount=type=cache,id=gomod,target=/go/pkg/mod \
--mount=type=cache,id=gobuild,target=/root/.cache/go-build \
go test ./... \
&& go build -o /go/bin/init -trimpath .
# ------------------------------------------------------------------------
from alpine:3.19.0 as initrd

8
auth.go
View File

@ -3,8 +3,8 @@ package main
import (
"bytes"
"errors"
"log"
"github.com/rs/zerolog/log"
"golang.org/x/crypto/ssh"
config "novit.tech/direktil/pkg/bootstrapconfig"
@ -23,7 +23,7 @@ func localAuth() bool {
}
if config.CheckPassword(auth.Password, sec) {
log.Printf("login with auth %q", auth.Name)
log.Info().Msgf("login with auth %q", auth.Name)
return true
}
}
@ -41,12 +41,12 @@ func sshCheckPubkey(conn ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions,
allowedKey, _, _, _, err := ssh.ParseAuthorizedKey([]byte(auth.SSHKey))
if err != nil {
log.Printf("SSH pubkey for %q invalid: %v", auth.Name, auth.SSHKey)
log.Warn().Err(err).Str("user", auth.Name).Str("key", auth.SSHKey).Msg("SSH public key is invalid")
return nil, err
}
if bytes.Equal(allowedKey.Marshal(), keyBytes) {
log.Print("ssh: accepting public key for ", auth.Name)
log.Info().Str("user", auth.Name).Msg("ssh: accepting public key")
return &ssh.Permissions{
Extensions: map[string]string{
"pubkey-fp": ssh.FingerprintSHA256(key),

60
boot-v1.go
View File

@ -1,7 +1,6 @@
package main
import (
"log"
"os"
"path/filepath"
"strconv"
@ -9,14 +8,17 @@ import (
"syscall"
"time"
"github.com/rs/zerolog/log"
yaml "gopkg.in/yaml.v2"
"novit.tech/direktil/pkg/config/apply"
"novit.tech/direktil/pkg/sysfs"
)
var loopOffset = 0
func bootV1() {
log.Print("-- boot v1 --")
log.Info().Msg("-- boot v1 --")
// find and mount /boot
bootMatch := param("boot", "")
@ -30,21 +32,21 @@ func bootV1() {
if i > 30 {
fatal("boot partition not found after 30s")
}
log.Print("boot partition not found, retrying")
log.Info().Msg("boot partition not found, retrying")
time.Sleep(1 * time.Second)
continue
}
devFile := filepath.Join("/dev", devNames[0])
log.Print("boot partition found: ", devFile)
log.Info().Str("dev", devFile).Msg("boot partition found")
mount(devFile, "/boot", bootFS, bootMountFlags, "")
bootMounted = true
break
}
} else {
log.Print("Assuming /boot is already populated.")
log.Info().Msg("Assuming /boot is already populated.")
}
// load config
@ -72,10 +74,10 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
fatal("no layers configured!")
}
log.Printf("wanted layers: %q", cfg.Layers)
layersInMemory := paramBool("layers-in-mem", false)
log.Info().Strs("layers", cfg.Layers).Bool("in-memory", layersInMemory).Msg("mounting layers")
const layersInMemDir = "/layers-in-mem"
if layersInMemory {
mkdir(layersInMemDir, 0700)
@ -84,6 +86,8 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
lowers := make([]string, len(cfg.Layers))
for i, layer := range cfg.Layers {
log := log.With().Str("layer", layer).Logger()
path := layerPath(layer)
info, err := os.Stat(path)
@ -91,10 +95,10 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
fatal(err)
}
log.Printf("layer %s found (%d bytes)", layer, info.Size())
log.Info().Int64("size", info.Size()).Msg("layer found")
if layersInMemory {
log.Print(" copying to memory...")
log.Info().Msg("copying to memory")
targetPath := filepath.Join(layersInMemDir, layer)
cp(path, targetPath)
path = targetPath
@ -126,7 +130,7 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
if bootMounted {
if layersInMemory {
if err := syscall.Unmount("/boot", 0); err != nil {
log.Print("WARNING: failed to unmount /boot: ", err)
log.Warn().Err(err).Msg("failed to unmount /boot")
time.Sleep(2 * time.Second)
}
@ -136,60 +140,47 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
}
// - write configuration
log.Print("writing /config.yaml")
log.Info().Msg("writing /config.yaml")
if err := os.WriteFile("/system/config.yaml", cfgBytes, 0600); err != nil {
fatal("failed: ", err)
}
// - write files
for _, fileDef := range cfg.Files {
log.Print("writing ", fileDef.Path)
filePath := filepath.Join("/system", fileDef.Path)
if err := os.MkdirAll(filepath.Dir(filePath), 0755); err != nil {
log.Printf("failed to create dir %s: %v", filepath.Dir(fileDef.Path), err)
}
mode := fileDef.Mode
if mode == 0 {
mode = 0644
}
err = os.WriteFile(filePath, []byte(fileDef.Content), mode)
if err != nil {
fatalf("failed to write %s: %v", fileDef.Path, err)
}
}
apply.Files(cfg.Files, "/system")
// - groups
for _, group := range cfg.Groups {
log.Print("creating group ", group.Name)
logEvt := log.Info().Str("group", group.Name)
opts := make([]string, 0)
opts = append(opts /* chroot */, "/system", "groupadd", "-r")
if group.Gid != 0 {
opts = append(opts, "-g", strconv.Itoa(group.Gid))
logEvt.Int("gid", group.Gid)
}
opts = append(opts, group.Name)
logEvt.Msg("creating group")
run("chroot", opts...)
}
// - user
for _, user := range cfg.Users {
log.Print("creating user ", user.Name)
logEvt := log.Info().Str("user", user.Name)
opts := make([]string, 0)
opts = append(opts /* chroot */, "/system", "useradd", "-r")
if user.Gid != 0 {
opts = append(opts, "-g", strconv.Itoa(user.Gid))
logEvt.Int("gid", user.Gid)
}
if user.Uid != 0 {
opts = append(opts, "-u", strconv.Itoa(user.Uid))
logEvt.Int("uid", user.Uid)
}
opts = append(opts, user.Name)
logEvt.Msg("creating user")
run("chroot", opts...)
}
@ -197,11 +188,8 @@ func applyConfig(cfgPath string, bootMounted bool) (cfg *configV1) {
}
func finalizeBoot() {
// clean zombies
cleanZombies()
// switch root
log.Print("switching root")
log.Info().Msg("switching root")
err := syscall.Exec("/sbin/switch_root", []string{"switch_root",
"-c", "/dev/console", "/system", "/sbin/init"}, os.Environ())
fatal("switch_root failed: ", err)

26
boot-v2.go
View File

@ -1,20 +1,20 @@
package main
import (
"log"
"os"
"os/exec"
"github.com/rs/zerolog/log"
"gopkg.in/yaml.v3"
config "novit.tech/direktil/pkg/bootstrapconfig"
)
func bootV2() {
log.Print("-- boot v2 --")
log.Info().Msg("-- boot v2 --")
kernelVersion := unameRelease()
log.Print("Linux version ", kernelVersion)
log.Info().Str("version", kernelVersion).Msg("Linux")
cfg := &config.Config{}
@ -32,15 +32,19 @@ func bootV2() {
}
}
log.Print("config loaded")
log.Printf("\n\nanti-phishing code: %q\n", cfg.AntiPhishingCode)
log.Info().Msg("config loaded")
if cfg.AntiPhishingCode != "" {
log.Info().Str("anti-phishing-code", cfg.AntiPhishingCode).Send()
}
auths = cfg.Auths
// mount kernel modules
if cfg.Modules == "" {
log.Print("NOT mounting modules (nothing specified)")
log.Warn().Msg("NOT mounting modules (\"modules:\" not specified)")
} else {
log.Info().Str("from", cfg.Modules).Msg("mounting modules")
mountSquahfs(cfg.Modules, "/modules")
modulesSourcePath := "/modules/lib/modules/" + kernelVersion
@ -55,19 +59,23 @@ func bootV2() {
}
// load basic modules
run("modprobe", "unix")
for _, module := range []string{"unix"} {
log.Info().Str("module", module).Msg("loading module")
run("modprobe", module)
}
// devices init
log.Info().Msg("starting udevd")
err := exec.Command("udevd").Start()
if err != nil {
fatal("failed to start udevd: ", err)
}
log.Print("udevadm triggers")
log.Info().Msg("udevadm triggers")
run("udevadm", "trigger", "-c", "add", "-t", "devices")
run("udevadm", "trigger", "-c", "add", "-t", "subsystems")
log.Print("udevadm settle")
log.Info().Msg("udevadm settle")
run("udevadm", "settle")
// networks

16
bootstrap.go
View File

@ -4,12 +4,13 @@ import (
"bytes"
"fmt"
"io"
"log"
"net/http"
"os"
"path/filepath"
"strings"
"github.com/rs/zerolog/log"
config "novit.tech/direktil/pkg/bootstrapconfig"
)
@ -27,14 +28,14 @@ func bootstrap(cfg *config.Config) {
sysCfgPath := filepath.Join(baseDir, "config.yaml")
if _, err := os.Stat(sysCfgPath); os.IsNotExist(err) {
log.Printf("bootstrap %q does not exist", bootVersion)
log.Warn().Msgf("bootstrap %q does not exist", bootVersion)
seed := cfg.Bootstrap.Seed
if seed == "" {
fatalf("boostrap seed not defined, admin required")
}
log.Printf("seeding bootstrap from %s", seed)
log.Info().Str("from", seed).Msgf("seeding bootstrap")
err = os.MkdirAll(baseDir, 0700)
if err != nil {
@ -72,7 +73,7 @@ func bootstrap(cfg *config.Config) {
fatalf("seeding failed: %v", err)
}
log.Print("unpacking bootstrap file")
log.Info().Msg("unpacking bootstrap file")
run("tar", "xvf", bootstrapFile, "-C", baseDir)
}
@ -89,7 +90,7 @@ func bootstrap(cfg *config.Config) {
// mounts are v2+
for _, mount := range sysCfg.Mounts {
log.Print("mount ", mount.Dev, " to system's ", mount.Path)
log.Info().Str("source", mount.Dev).Str("target", mount.Path).Msg("mount")
path := filepath.Join("/system", mount.Path)
@ -108,15 +109,16 @@ func bootstrap(cfg *config.Config) {
// setup root user
if ph := sysCfg.RootUser.PasswordHash; ph != "" {
log.Print("setting root's password")
log.Info().Msg("setting root's password")
setUserPass("root", ph)
}
if ak := sysCfg.RootUser.AuthorizedKeys; len(ak) != 0 {
log.Print("setting root's authorized keys")
log.Info().Msg("setting root's authorized keys")
setAuthorizedKeys(ak)
}
// update-ca-certificates
log.Info().Msg("updating CA certifices")
run("chroot", "/system", "update-ca-certificates")
}

17
go.mod
View File

@ -1,16 +1,17 @@
module novit.nc/direktil/initrd
module novit.tech/direktil/initrd
require (
github.com/freddierice/go-losetup/v2 v2.0.1
github.com/kr/pty v1.1.8
github.com/pkg/term v1.1.0
golang.org/x/crypto v0.16.0
golang.org/x/sys v0.15.0
golang.org/x/term v0.15.0
github.com/rs/zerolog v1.31.0
golang.org/x/crypto v0.18.0
golang.org/x/sys v0.16.0
golang.org/x/term v0.16.0
golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6
gopkg.in/yaml.v2 v2.4.0
gopkg.in/yaml.v3 v3.0.1
novit.tech/direktil/pkg v0.0.0-20231217121409-827fa62f58aa
novit.tech/direktil/pkg v0.0.0-20240120153454-29595df7b8ff
)
require (
@ -18,11 +19,13 @@ require (
github.com/creack/pty v1.1.21 // indirect
github.com/google/go-cmp v0.6.0 // indirect
github.com/josharian/native v1.1.0 // indirect
github.com/mattn/go-colorable v0.1.13 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mdlayher/genetlink v1.3.2 // indirect
github.com/mdlayher/netlink v1.7.2 // indirect
github.com/mdlayher/socket v0.5.0 // indirect
golang.org/x/net v0.19.0 // indirect
golang.org/x/sync v0.5.0 // indirect
golang.org/x/net v0.20.0 // indirect
golang.org/x/sync v0.6.0 // indirect
golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 // indirect
)

28
go.sum
View File

@ -1,5 +1,6 @@
github.com/cavaliergopher/cpio v1.0.1 h1:KQFSeKmZhv0cr+kawA3a0xTQCU4QxXF1vhU7P7av2KM=
github.com/cavaliergopher/cpio v1.0.1/go.mod h1:pBdaqQjnvXxdS/6CvNDwIANIFSP0xRKI16PX4xejRQc=
github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
github.com/creack/pty v1.1.18 h1:n56/Zwd5o6whRC5PMGretI4IdRLlmBXYNjScPaBgsbY=
github.com/creack/pty v1.1.18/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
@ -7,6 +8,7 @@ github.com/creack/pty v1.1.21 h1:1/QdRyBaHHJP61QkWMXlOIBfsgdDeeKfK8SYVUWJKf0=
github.com/creack/pty v1.1.21/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
github.com/freddierice/go-losetup/v2 v2.0.1 h1:wPDx/Elu9nDV8y/CvIbEDz5Xi5Zo80y4h7MKbi3XaAI=
github.com/freddierice/go-losetup/v2 v2.0.1/go.mod h1:TEyBrvlOelsPEhfWD5rutNXDmUszBXuFnwT1kIQF4J8=
github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
@ -20,6 +22,13 @@ github.com/kr/pty v1.1.8 h1:AkaSdXYQOWeaO3neb8EM634ahkXXe3jYbVh/F9lq+GI=
github.com/kr/pty v1.1.8/go.mod h1:O1sed60cT9XZ5uDucP5qwvh+TE3NnUj51EiZO/lmSfw=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mdlayher/genetlink v1.3.1 h1:roBiPnual+eqtRkKX2Jb8UQN5ZPWnhDCGj/wR6Jlz2w=
github.com/mdlayher/genetlink v1.3.1/go.mod h1:uaIPxkWmGk753VVIzDtROxQ8+T+dkHqOI0vB1NA9S/Q=
github.com/mdlayher/genetlink v1.3.2 h1:KdrNKe+CTu+IbZnm/GVUMXSqBBLqcGpRDa0xkQy56gw=
@ -34,8 +43,12 @@ github.com/mdlayher/socket v0.5.0 h1:ilICZmJcQz70vrWVes1MFera4jGiWNocSkykwwoy3XI
github.com/mdlayher/socket v0.5.0/go.mod h1:WkcBFfvyG8QENs5+hfQPl1X6Jpd2yeLIYgrGFmJiJxI=
github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721 h1:RlZweED6sbSArvlE924+mUcZuXKLBHA35U7LN621Bws=
github.com/mikioh/ipaddr v0.0.0-20190404000644-d465c8ab6721/go.mod h1:Ickgr2WtCLZ2MDGd4Gr0geeCH5HybhRJbonOgQpvSxc=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/term v1.1.0 h1:xIAAdCMh3QIAy+5FrE8Ad8XoDhEU4ufwbaSozViP9kk=
github.com/pkg/term v1.1.0/go.mod h1:E25nymQcrSllhX42Ok8MRm1+hyBdHY0dCeiKZ9jpNGw=
github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
github.com/rs/zerolog v1.31.0 h1:FcTR3NnLWW+NnTwwhFWiJSZr4ECLpqCm6QsEnyvbV4A=
github.com/rs/zerolog v1.31.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
github.com/ulikunitz/xz v0.5.6/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
github.com/ulikunitz/xz v0.5.11/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
@ -46,6 +59,8 @@ golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
golang.org/x/crypto v0.16.0 h1:mMMrFzRSCF0GvB7Ne27XVtVAaXLrPmgPC7/v0tkwHaY=
golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc=
golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@ -58,12 +73,16 @@ golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
golang.org/x/net v0.20.0/go.mod h1:z8BVo6PvndSri0LbOE3hAn0apkU+1YvI6E70E9jsnvY=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.5.0 h1:60k92dhOjHxJkrqnwsfl8KuaHbn/5dl0lUPUklKo3qE=
golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@ -71,12 +90,17 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.4.0 h1:O7UWfv5+A2qiuulQk30kVinPoMtoIPeVaKLEgLpVkvg=
@ -85,6 +109,8 @@ golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
golang.org/x/term v0.16.0 h1:m+B6fahuftsE9qjo0VWp2FW0mB3MTJvR0BaMQrq0pmE=
golang.org/x/term v0.16.0/go.mod h1:yn7UURbUtPyrVJPGPq404EukNFxcm/foM+bV/bfcDsY=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@ -120,3 +146,5 @@ novit.tech/direktil/pkg v0.0.0-20230201224712-5e39572dc50e h1:eQFbzcuB4wOSrnOhkc
novit.tech/direktil/pkg v0.0.0-20230201224712-5e39572dc50e/go.mod h1:2Mir5x1eT/e295WeFGzzXa4siunKX4z+rmNPfVsXS0k=
novit.tech/direktil/pkg v0.0.0-20231217121409-827fa62f58aa h1:eBk9nQTxIJU5cT8aJVjfRWiUd4sv8YV0kXALbSFOKdI=
novit.tech/direktil/pkg v0.0.0-20231217121409-827fa62f58aa/go.mod h1:AYEEjNi7ljJG+V4F4LzxWntfbSs+KnNPO3kqvcEzIU4=
novit.tech/direktil/pkg v0.0.0-20240120153454-29595df7b8ff h1:GctOfnciAzBRoEOxFulavphO3vSVj1jR6DZVlyGueJU=
novit.tech/direktil/pkg v0.0.0-20240120153454-29595df7b8ff/go.mod h1:zjezU6tELE880oYHs/WAauGBupKIEQQ7KqWTB69RW10=

48
lvm.go
View File

@ -3,15 +3,17 @@ package main
import (
"bytes"
"io/fs"
"log"
"os"
"os/exec"
"path/filepath"
"sort"
"strconv"
"novit.nc/direktil/initrd/lvm"
"github.com/rs/zerolog/log"
config "novit.tech/direktil/pkg/bootstrapconfig"
"novit.tech/direktil/initrd/lvm"
)
func sortedKeys[T any](m map[string]T) (keys []string) {
@ -25,7 +27,7 @@ func sortedKeys[T any](m map[string]T) (keys []string) {
func setupLVM(cfg *config.Config) {
if len(cfg.LVM) == 0 {
log.Print("no LVM VG configured.")
log.Info().Msg("no LVM VG configured.")
return
}
@ -75,15 +77,17 @@ func setupVG(vg config.LvmVG) {
}
}
log := log.With().Str("vg", vg.VG).Logger()
if devNeeded <= 0 {
log.Print("LVM VG ", vg.VG, " has all its devices")
log.Info().Msg("LVM VG has all its devices")
return
}
if vgExists {
log.Printf("LVM VG %s misses %d devices", vg.VG, devNeeded)
log.Info().Msgf("LVM VG misses %d devices", devNeeded)
} else {
log.Printf("LVM VG %s does not exists, creating", vg.VG)
log.Info().Msg("LVM VG does not exists, creating")
}
devNames := make([]string, 0)
@ -108,20 +112,16 @@ func setupVG(vg config.LvmVG) {
m := regexpSelectN(vg.PVs.N, vg.PVs.Regexps, devNames)
if len(m) == 0 {
log.Printf("no devices match the regexps %v", vg.PVs.Regexps)
for _, d := range devNames {
log.Print("- ", d)
}
log.Error().Strs("regexps", vg.PVs.Regexps).Msg("no device match the regexps")
fatalf("failed to setup VG %s", vg.VG)
}
if vgExists {
log.Print("- extending vg to ", m)
log.Info().Strs("devices", m).Msg("LVM VG: extending")
run("vgextend", append([]string{vg.VG}, m...)...)
devNeeded -= len(m)
} else {
log.Print("- creating vg with devices ", m)
log.Info().Strs("devices", m).Msg("LVM VG: creating")
run("vgcreate", append([]string{vg.VG}, m...)...)
devNeeded -= len(m)
}
@ -142,17 +142,17 @@ func setupLVs(vg config.LvmVG, createdDevs map[string]string) {
defaults := vg.Defaults
for _, lv := range vg.LVs {
lvKey := vg.VG + "/" + lv.Name
for idx, lv := range vg.LVs {
log := log.With().Str("vg", vg.VG).Str("lv", lv.Name).Logger()
if contains(lvs, func(v lvm.LV) bool {
return v.VGName == vg.VG && v.Name == lv.Name
}) {
log.Printf("LV %s exists", lvKey)
log.Info().Msg("LV exists")
continue
}
log.Printf("creating LV %s", lvKey)
log.Info().Msg("LV does not exist")
if lv.Raid == nil {
lv.Raid = defaults.Raid
@ -161,7 +161,7 @@ func setupLVs(vg config.LvmVG, createdDevs map[string]string) {
args := make([]string, 0)
if lv.Name == "" {
fatalf("LV has no name")
fatalf("LV[%d] has no name", idx)
}
args = append(args, vg.VG, "--name", lv.Name)
@ -184,7 +184,7 @@ func setupLVs(vg config.LvmVG, createdDevs map[string]string) {
}
}
log.Print("lvcreate args: ", args)
log.Info().Strs("args", args).Msg("LV: creating")
run("lvcreate", args...)
dev := "/dev/" + vg.VG + "/" + lv.Name
@ -286,12 +286,12 @@ func setupCrypt(devSpecs []config.CryptDev, createdDevs map[string]string) {
}
if !eq {
log.Print("passwords don't match")
log.Error().Msg("passwords don't match")
goto retry
}
}
log.Print("formatting encrypted device ", dev)
log.Info().Str("dev", dev).Msg("formatting encrypted device")
cmd := exec.Command("cryptsetup", "luksFormat", dev, "--key-file=-")
cmd.Stdin = bytes.NewBuffer(password)
cmd.Stdout = stdout
@ -312,7 +312,7 @@ func setupCrypt(devSpecs []config.CryptDev, createdDevs map[string]string) {
}
}
log.Print("openning encrypted device ", name, " from ", dev)
log.Info().Str("name", name).Str("dev", dev).Msg("openning encrypted device")
cmd := exec.Command("cryptsetup", "open", dev, name, "--key-file=-")
cmd.Stdin = bytes.NewBuffer(password)
cmd.Stdout = stdout
@ -364,7 +364,7 @@ func devInitialized(dev string) bool {
func setupFS(dev, fs string) {
if devInitialized(dev) {
log.Print("device ", dev, " already formatted")
log.Info().Str("dev", dev).Msg("device already formatted")
return
}
@ -372,7 +372,7 @@ func setupFS(dev, fs string) {
fs = "ext4"
}
log.Print("formatting ", dev, " (", fs, ")")
log.Info().Str("dev", dev).Str("fs", fs).Msg("formatting device")
args := make([]string, 0)
switch fs {

47
main.go
View File

@ -3,7 +3,6 @@ package main
import (
"fmt"
"io"
"log"
"os"
"os/exec"
"path/filepath"
@ -12,10 +11,12 @@ import (
"time"
"github.com/pkg/term/termios"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"golang.org/x/term"
"novit.nc/direktil/initrd/colorio"
"novit.nc/direktil/initrd/shio"
"novit.tech/direktil/initrd/colorio"
"novit.tech/direktil/initrd/shio"
)
const (
@ -41,11 +42,13 @@ func newPipe() (io.ReadCloser, io.WriteCloser) {
}
func main() {
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
switch baseName := filepath.Base(os.Args[0]); baseName {
case "init":
runInit()
default:
log.Fatal("unknown sub-command: ", baseName)
log.Fatal().Msgf("unknown sub-command: %q", baseName)
}
}
@ -57,18 +60,19 @@ func runInit() {
runtime.LockOSThread()
if pid := os.Getpid(); pid != 1 {
log.Fatal("init must be PID 1, not ", pid)
}
// move log to shio
go io.Copy(os.Stdout, stdout.NewReader())
log.SetOutput(stderr)
log.Logger = log.Output(zerolog.ConsoleWriter{Out: stderr})
// check the PID is 1
if pid := os.Getpid(); pid != 1 {
log.Fatal().Int("pid", pid).Msg("init must be PID 1")
}
// copy os.Stdin to my stdin pipe
go io.Copy(stdinPipe, os.Stdin)
log.Print("Welcome to ", VERSION)
log.Info().Msg("Welcome to " + VERSION)
// essential mounts
mount("none", "/proc", "proc", 0, "")
@ -78,7 +82,7 @@ func runInit() {
// get the "boot version"
bootVersion = param("version", "current")
log.Printf("booting system %q", bootVersion)
log.Info().Msgf("booting system %q", bootVersion)
os.Setenv("PATH", "/usr/bin:/bin:/usr/sbin:/sbin")
@ -107,19 +111,20 @@ func layerPath(name string) string {
}
func fatal(v ...interface{}) {
log.Print("*** FATAL ***")
log.Print(v...)
log.Error().Msg("*** FATAL ***")
log.Error().Msg(fmt.Sprint(v...))
die()
}
func fatalf(pattern string, v ...interface{}) {
log.Print("*** FATAL ***")
log.Printf(pattern, v...)
log.Error().Msg("*** FATAL ***")
log.Error().Msgf(pattern, v...)
die()
}
func die() {
log.SetOutput(os.Stderr)
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
stdout.Close()
stdin.Close()
stdinPipe.Close()
@ -138,13 +143,13 @@ mainLoop:
deadline := time.Now().Add(time.Minute)
os.Stdin.SetReadDeadline(deadline)
termios.Tcflush(os.Stdin.Fd(), termios.TCIFLUSH)
term.MakeRaw(int(os.Stdin.Fd()))
termios.Tcflush(os.Stdin.Fd(), termios.TCIFLUSH)
b := make([]byte, 1)
_, err := os.Stdin.Read(b)
if err != nil {
log.Print("failed to read from stdin: ", err)
log.Error().Err(err).Msg("failed to read from stdin")
time.Sleep(5 * time.Second)
syscall.Reboot(syscall.LINUX_REBOOT_CMD_RESTART)
}
@ -184,10 +189,10 @@ mainLoop:
}
continue mainLoop
}
log.Print("failed to find a shell!")
log.Error().Msg("failed to find a shell!")
default:
log.Printf("unknown choice: %q", string(b))
log.Error().Msgf("unknown choice: %q", string(b))
}
}
}
@ -212,7 +217,7 @@ func mount(source, target, fstype string, flags uintptr, data string) {
if err := syscall.Mount(source, target, fstype, flags, data); err != nil {
fatalf("mount %q %q -t %q -o %q failed: %v", source, target, fstype, data, err)
}
log.Printf("mounted %q", target)
log.Info().Str("target", target).Msg("mounted")
}
func cp(srcPath, dstPath string) {

1
modd.conf
View File

@ -3,6 +3,7 @@ modd.conf {}
go.??? **/*.go {
prep: go test ./...
prep: mkdir -p dist
prep: go build -o dist/init .
prep: go build -o dist/ ./tools/...
}

11
network.go
View File

@ -1,17 +1,18 @@
package main
import (
"log"
"net"
"os/exec"
"strings"
"github.com/rs/zerolog/log"
config "novit.tech/direktil/pkg/bootstrapconfig"
)
func setupNetworks(cfg *config.Config) {
if len(cfg.Networks) == 0 {
log.Print("no networks configured.")
log.Info().Msg("no networks configured.")
return
}
@ -29,7 +30,8 @@ func setupNetworks(cfg *config.Config) {
assigned := map[string]bool{}
for _, network := range cfg.Networks {
log.Print("setting up network ", network.Name)
log := log.With().Str("network", network.Name).Logger()
log.Info().Msg("setting up network")
// compute available names
if len(assigned) != 0 {
@ -60,10 +62,11 @@ func setupNetworks(cfg *config.Config) {
assigned[m] = true
}
log.Print("- ", envvar)
envvars = append(envvars, envvar.String())
}
log.Info().Strs("env", envvars).Msg("running script")
cmd := exec.Command("/bin/sh", "-c", network.Script)
cmd.Env = envvars
cmd.Stdout = stdout

5
regexp.go
View File

@ -1,8 +1,9 @@
package main
import (
"log"
"regexp"
"github.com/rs/zerolog/log"
)
func regexpSelectN(n int, regexps []string, names []string) (matches []string) {
@ -16,7 +17,7 @@ func regexpSelectN(n int, regexps []string, names []string) (matches []string) {
for _, reStr := range regexps {
re, err := regexp.Compile(reStr)
if err != nil {
log.Printf("warning: invalid regexp ignored: %q: %v", reStr, err)
log.Warn().Err(err).Str("regexp", reStr).Msg("invalid regexp, ignored")
continue
}
res = append(res, re)

2
shio/shio.go
View File

@ -5,7 +5,7 @@ import (
"io"
"sync"
"novit.nc/direktil/initrd/colorio"
"novit.tech/direktil/initrd/colorio"
)
type ShIO struct {

24
ssh.go
View File

@ -4,7 +4,6 @@ import (
"encoding/binary"
"fmt"
"io"
"log"
"net"
"os"
"os/exec"
@ -13,6 +12,7 @@ import (
"unsafe"
"github.com/kr/pty"
"github.com/rs/zerolog/log"
"golang.org/x/crypto/ssh"
config "novit.tech/direktil/pkg/bootstrapconfig"
@ -26,20 +26,24 @@ func startSSH(cfg *config.Config) {
hostKeyLoaded := false
for _, format := range []string{"rsa", "dsa", "ecdsa", "ed25519"} {
log := log.With().Str("format", format).Logger()
pkBytes, err := os.ReadFile("/id_" + format)
if err != nil {
log.Printf("ssh : failed to load %s host key: %v", format, err)
log.Error().Err(err).Msg("ssh: failed to load host key")
continue
}
pk, err := ssh.ParsePrivateKey(pkBytes)
if err != nil {
log.Printf("ssh: failed to parse %s host key: %v", format, err)
log.Error().Err(err).Msg("ssh: failed to parse host key")
continue
}
sshConfig.AddHostKey(pk)
hostKeyLoaded = true
log.Info().Msg("ssh: loaded host key")
}
if !hostKeyLoaded {
@ -52,13 +56,13 @@ func startSSH(cfg *config.Config) {
fatalf("ssh: failed to listen on %s: %v", sshBind, err)
}
log.Print("SSH server listening on ", sshBind)
log.Info().Str("bind-address", sshBind).Msg("SSH server listening")
go func() {
for {
conn, err := listener.Accept()
if err != nil {
log.Print("ssh: accept conn failed: ", err)
log.Info().Err(err).Msg("ssh: accept conn failed")
continue
}
@ -71,12 +75,12 @@ func sshHandleConn(conn net.Conn, sshConfig *ssh.ServerConfig) {
sshConn, chans, reqs, err := ssh.NewServerConn(conn, sshConfig)
if err != nil {
log.Print("ssh: handshake failed: ", err)
log.Error().Err(err).Msg("ssh: handshake failed")
return
}
remoteAddr := sshConn.User() + "@" + sshConn.RemoteAddr().String()
log.Print("ssh: new connection from ", remoteAddr)
log.Info().Str("remote", remoteAddr).Msg("ssh: new connection")
go sshHandleReqs(reqs)
go sshHandleChannels(remoteAddr, chans)
@ -89,7 +93,7 @@ func sshHandleReqs(reqs <-chan *ssh.Request) {
req.Reply(true, nil)
default:
log.Printf("ssh: discarding req: %+v", req)
log.Info().Str("type", req.Type).Msg("ssh: discarding request")
req.Reply(false, nil)
}
}
@ -104,7 +108,7 @@ func sshHandleChannels(remoteAddr string, chans <-chan ssh.NewChannel) {
channel, requests, err := newChannel.Accept()
if err != nil {
log.Print("ssh: failed to accept channel: ", err)
log.Error().Err(err).Msg("ssh: failed to accept channel")
continue
}
@ -211,7 +215,7 @@ func sshHandleChannel(remoteAddr string, channel ssh.Channel, requests <-chan *s
var err error
ptyF, ttyF, err = pty.Open()
if err != nil {
log.Print("PTY err: ", err)
log.Error().Err(err).Msg("ssh: PTY open failed")
req.Reply(false, nil)
continue
}

5
tools/cpiocat/main.go
View File

@ -2,7 +2,7 @@ package main
import (
"flag"
"log"
"fmt"
"os"
"novit.tech/direktil/pkg/cpiocat"
@ -13,6 +13,7 @@ func main() {
err := cpiocat.Append(os.Stdout, os.Stdin, flag.Args())
if err != nil {
log.Fatal(err)
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
}

17
tools/testconf/main.go
View File

@ -3,7 +3,7 @@ package main
import (
"bytes"
"flag"
"log"
"fmt"
"os"
"gopkg.in/yaml.v3"
@ -14,12 +14,10 @@ func main() {
flag.Parse()
for _, arg := range flag.Args() {
log.Print("testing ", arg)
fmt.Println("testing", arg)
cfgBytes, err := os.ReadFile(arg)
if err != nil {
log.Fatal(err)
}
fail(err)
cfg := config.Config{}
@ -27,8 +25,13 @@ func main() {
dec.KnownFields(true)
err = dec.Decode(&cfg)
fail(err)
}
}
func fail(err error) {
if err != nil {
log.Fatal(err)
}
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
}

20
vpn.go
View File

@ -1,11 +1,11 @@
package main
import (
"log"
"net"
"os"
"path/filepath"
"github.com/rs/zerolog/log"
"golang.zx2c4.com/wireguard/wgctrl"
"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
@ -13,11 +13,18 @@ import (
)
func setupVPN(vpn config.VPNDef, localGenDir string) {
log.Printf("setting up VPN %s", vpn.Name)
log := log.With().Str("vpn", vpn.Name).Logger()
log.Info().Msg("VPN: setting up")
vpnDir := filepath.Join(localGenDir, vpn.Name)
os.MkdirAll(vpnDir, 0750)
logMsg := log.Info()
if vpn.ListenPort != nil {
logMsg.Int("ListenPort", *vpn.ListenPort)
}
// public/private key
keyFile := filepath.Join(vpnDir, "key")
keyBytes, err := os.ReadFile(keyFile)
@ -39,7 +46,7 @@ func setupVPN(vpn config.VPNDef, localGenDir string) {
fatalf("bad VPN key: %v", err)
}
log.Printf("VPN %s public key is %s", vpn.Name, key.PublicKey().String())
logMsg.Stringer("PublicKey", key.PublicKey())
// pre-shared key
pskeyFile := filepath.Join(vpnDir, "pskey")
@ -62,7 +69,10 @@ func setupVPN(vpn config.VPNDef, localGenDir string) {
fatalf("bad VPN pre-shared key: %v", err)
}
log.Printf("VPN %s pre-shared key is %s", vpn.Name, key.String())
{
keyStr := key.String()
logMsg.Str("PresharedKey", keyStr[0:4]+"..."+keyStr[len(keyStr)-4:])
}
// setup interface
cfg := wgtypes.Config{
@ -110,12 +120,14 @@ func setupVPN(vpn config.VPNDef, localGenDir string) {
}
defer wg.Close()
log.Info().Strs("ips", vpn.IPs).Msg("VPN: creating interface")
run("ip", "link", "add", vpn.Name, "type", "wireguard")
for _, ip := range vpn.IPs {
run("ip", "addr", "add", ip, "dev", vpn.Name)
}
logMsg.Msg("VPN: configuring interface")
err = wg.ConfigureDevice(vpn.Name, cfg)
if err != nil {
fatalf("failed to setup VPN %s: %v", vpn.Name, err)

26
zombies.go
View File

@ -1,26 +0,0 @@
package main
import (
"log"
"syscall"
)
func cleanZombies() {
return // FIXME noop... udhcpc is a daemon staying alive so we never finish
var wstatus syscall.WaitStatus
for {
pid, err := syscall.Wait4(-1, &wstatus, 0, nil)
switch err {
case nil:
log.Printf("collected PID %v", pid)
case syscall.ECHILD:
return
default:
log.Printf("unknown error: %v", err)
}
}
}