bootv2: bootstrap, vpn

bootstrap.go

@@ -2,13 +2,16 @@ package main
 
 import (
 	"bytes"
+	"fmt"
+	"io"
 	"io/ioutil"
 	"log"
+	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
 
-	"novit.nc/direktil/initrd/config"
+	config "novit.tech/direktil/pkg/bootstrapconfig"
 )
 
 func bootstrap(cfg *config.Config) {
@@ -34,14 +37,58 @@ func bootstrap(cfg *config.Config) {
 
 		log.Printf("seeding bootstrap from %s", seed)
 
-		// TODO
+		err = os.MkdirAll(baseDir, 0700)
+		if err != nil {
+			fatalf("failed to create bootstrap dir: %v", err)
+		}
+
+		bootstrapFile := filepath.Join(baseDir, "bootstrap.tar")
+
+		err = func() (err error) {
+			resp, err := http.Get(seed)
+			if err != nil {
+				return
+			}
+
+			if resp.StatusCode != http.StatusOK {
+				err = fmt.Errorf("bad HTTP status: %s", resp.Status)
+				return
+			}
+
+			defer resp.Body.Close()
+
+			out, err := os.Create(bootstrapFile)
+			if err != nil {
+				return
+			}
+
+			defer out.Close()
+
+			_, err = io.Copy(out, resp.Body)
+
+			return
+		}()
+
+		if err != nil {
+			fatalf("seeding failed: %v", err)
+		}
+
+		log.Print("unpacking bootstrap file")
+		run("tar", "xvf", bootstrapFile, "-C", baseDir)
 	}
 
 	layersDir = baseDir
 	layersOverride["modules"] = "/modules.sqfs"
 	sysCfg := applyConfig(sysCfgPath, false)
 
-	// mounts are v2 only
+	localGenDir := filepath.Join(bsDir, "local-gen")
+
+	// vpns are v2+
+	for _, vpn := range sysCfg.VPNs {
+		setupVPN(vpn, localGenDir)
+	}
+
+	// mounts are v2+
 	for _, mount := range sysCfg.Mounts {
 		log.Print("mount ", mount.Dev, " to system's ", mount.Path)