Golang Action.Validate方法代码示例

// checkActionAuthorization verifies the PGP signatures of a given action
// against the Access Control List of the agent.
func checkActionAuthorization(a mig.Action, ctx *Context) (err error) {
	defer func() {
		if e := recover(); e != nil {
			err = fmt.Errorf("checkActionAuthorization() -> %v", e)
		}
		ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: "leaving checkActionAuthorization()"}.Debug()
	}()
	var keys [][]byte
	for _, pk := range PUBLICPGPKEYS {
		keys = append(keys, []byte(pk))
	}
	// get an io.Reader from the public pgp key
	keyring, keycount, err := pgp.ArmoredKeysToKeyring(keys)
	if err != nil {
		panic(err)
	}
	ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: fmt.Sprintf("loaded %d keys", keycount)}.Debug()

	// Check the action syntax and signature
	err = a.Validate()
	if err != nil {
		desc := fmt.Sprintf("action validation failed: %v", err)
		ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: desc}.Err()
		panic(desc)
	}
	// Validate() checks that the action hasn't expired, but we need to
	// check the start time ourselves
	if time.Now().Before(a.ValidFrom) {
		ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: "action is scheduled for later"}.Err()
		panic("Action ValidFrom date is in the future")
	}

	// check ACLs, includes verifying signatures
	err = a.VerifyACL(ctx.ACL, keyring)
	if err != nil {
		desc := fmt.Sprintf("action ACL verification failed: %v", err)
		ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: desc}.Err()
		panic(desc)
	}

	ctx.Channels.Log <- mig.Log{ActionID: a.ID, Desc: "ACL verification succeeded."}.Debug()
	return
}

// createAction receives a signed action in a POST request, validates it,
// and write it into the scheduler spool
func createAction(respWriter http.ResponseWriter, request *http.Request) {
	var (
		err    error
		action mig.Action
	)
	opid := getOpID(request)
	loc := fmt.Sprintf("%s%s", ctx.Server.Host, request.URL.String())
	resource := cljs.New(loc)
	defer func() {
		if e := recover(); e != nil {
			ctx.Channels.Log <- mig.Log{OpID: opid, ActionID: action.ID, Desc: fmt.Sprintf("%v", e)}.Err()
			resource.SetError(cljs.Error{Code: fmt.Sprintf("%.0f", opid), Message: fmt.Sprintf("%v", e)})
			respond(http.StatusInternalServerError, resource, respWriter, request)
		}
		ctx.Channels.Log <- mig.Log{OpID: opid, ActionID: action.ID, Desc: "leaving createAction()"}.Debug()
	}()

	// parse the POST body into a mig action
	err = request.ParseForm()
	if err != nil {
		panic(err)
	}
	postAction := request.FormValue("action")
	err = json.Unmarshal([]byte(postAction), &action)
	if err != nil {
		panic(err)
	}
	ctx.Channels.Log <- mig.Log{OpID: opid, Desc: fmt.Sprintf("Received action for creation '%s'", action)}.Debug()

	// Init action fields
	action.ID = mig.GenID()
	date0 := time.Date(0011, time.January, 11, 11, 11, 11, 11, time.UTC)
	date1 := time.Date(9998, time.January, 11, 11, 11, 11, 11, time.UTC)
	action.StartTime = date0
	action.FinishTime = date1
	action.LastUpdateTime = date0
	action.Status = "pending"

	// load keyring and validate action
	keyring, err := getKeyring()
	if err != nil {
		panic(err)
	}

	err = action.Validate()
	if err != nil {
		panic(err)
	}
	err = action.VerifySignatures(keyring)
	if err != nil {
		panic(err)
	}
	ctx.Channels.Log <- mig.Log{OpID: opid, ActionID: action.ID, Desc: "Received new action with valid signature"}

	// write action to database
	err = ctx.DB.InsertAction(action)
	if err != nil {
		panic(err)
	}
	// write signatures to database
	astr, err := action.String()
	if err != nil {
		panic(err)
	}
	for _, sig := range action.PGPSignatures {
		k, err := getKeyring()
		if err != nil {
			panic(err)
		}
		fp, err := pgp.GetFingerprintFromSignature(astr, sig, k)
		if err != nil {
			panic(err)
		}
		inv, err := ctx.DB.InvestigatorByFingerprint(fp)
		if err != nil {
			panic(err)
		}
		err = ctx.DB.InsertSignature(action.ID, inv.ID, sig)
		if err != nil {
			panic(err)
		}
	}
	ctx.Channels.Log <- mig.Log{OpID: opid, ActionID: action.ID, Desc: "Action written to database"}
	err = resource.AddItem(cljs.Item{
		Href: fmt.Sprintf("%s/action?actionid=%.0f", ctx.Server.BaseURL, action.ID),
		Data: []cljs.Data{{Name: "action ID " + fmt.Sprintf("%.0f", action.ID), Value: action}},
	})
	if err != nil {
		panic(err)
	}
	// return a 202 Accepted. the action will be processed asynchronously, and may fail later.
	respond(http.StatusAccepted, resource, respWriter, request)
}

func main() {
	var err error
	var Usage = func() {
		fmt.Fprintf(os.Stderr,
			"Mozilla InvestiGator Action Verifier\n"+
				"usage: %s <-a action file> <-c command file>\n\n"+
				"Command line to verify an action *or* command.\n"+
				"Options:\n",
			os.Args[0])
		flag.PrintDefaults()
	}

	hasaction := false
	hascommand := false
	homedir := client.FindHomedir()

	// command line options
	var actionfile = flag.String("a", "/path/to/action", "Load action from file")
	var commandfile = flag.String("c", "/path/to/command", "Load command from file")
	var config = flag.String("conf", homedir+"/.migrc", "Load configuration from file")
	var showversion = flag.Bool("V", false, "Show build version and exit")
	flag.Parse()

	if *showversion {
		fmt.Println(mig.Version)
		os.Exit(0)
	}

	conf, err := client.ReadConfiguration(*config)
	if err != nil {
		panic(err)
	}

	// if a file is defined, load action from that
	if *actionfile != "/path/to/action" {
		hasaction = true
	}
	if *commandfile != "/path/to/command" {
		hascommand = true
	}
	if (hasaction && hascommand) || (!hasaction && !hascommand) {
		fmt.Println("[error] either an action file or a command file must be provided")
		Usage()
		os.Exit(1)
	}

	var a mig.Action
	if hasaction {
		a, err = mig.ActionFromFile(*actionfile)
		if err != nil {
			panic(err)
		}
	} else {
		c, err := mig.CmdFromFile(*commandfile)
		if err != nil {
			panic(err)
		}
		a = c.Action
	}

	err = a.Validate()
	if err != nil {
		fmt.Println(err)
	}

	pubringFile, err := os.Open(conf.GPG.Home + "/pubring.gpg")
	if err != nil {
		panic(err)
	}
	defer pubringFile.Close()

	// syntax checking
	err = a.VerifySignatures(pubringFile)
	if err != nil {
		fmt.Println("[error]", err)
	} else {
		fmt.Println("Valid signature")
	}

}