mirror of
https://github.com/gravitl/netmaker.git
synced 2025-10-05 00:43:58 +08:00
94 lines
2.8 KiB
Go
94 lines
2.8 KiB
Go
package functions
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import (
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"bytes"
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"crypto/ed25519"
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"crypto/rand"
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"encoding/json"
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"errors"
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"log"
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"net/http"
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"os"
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"github.com/gravitl/netmaker/logger"
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"github.com/gravitl/netmaker/netclient/config"
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"github.com/gravitl/netmaker/netclient/ncutils"
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"github.com/gravitl/netmaker/tls"
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)
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// Register - the function responsible for registering with the server and acquiring certs
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func Register(cfg *config.ClientConfig, key string) error {
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if cfg.Server.Server == "" {
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return errors.New("no server provided")
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}
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if cfg.Server.AccessKey == "" {
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return errors.New("no access key provided")
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}
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//generate new key if one doesn' exist
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private, err := tls.ReadKey(ncutils.GetNetclientPath() + "/client.key")
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if err != nil {
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_, *private, err = ed25519.GenerateKey(rand.Reader)
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if err != nil {
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return err
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}
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if err := tls.SaveKey(ncutils.GetNetclientPath(), "/client.key", *private); err != nil {
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return err
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}
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}
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//check if cert exists
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_, err = tls.ReadCert(ncutils.GetNetclientServerPath(cfg.Server.Server) + "/client.pem")
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if err != os.ErrNotExist {
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if err := RegisterWithServer(private, cfg); err != nil {
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return err
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}
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}
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if err != nil {
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return err
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}
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return JoinNetwork(cfg, key, false)
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}
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func RegisterWithServer(private *ed25519.PrivateKey, cfg *config.ClientConfig) error {
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data := config.RegisterRequest{
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Key: *private,
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CommonName: tls.NewCName(os.Getenv("HOSTNAME")),
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}
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payload, err := json.Marshal(data)
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if err != nil {
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return err
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}
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url := "https://" + cfg.Server.API + "/api/server/register"
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log.Println("register at ", url)
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request, err := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(payload))
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if err != nil {
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return err
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}
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request.Header.Set("Content-Type", "application/json")
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request.Header.Set("authorization", "Bearer "+cfg.Server.AccessKey)
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client := http.Client{}
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response, err := client.Do(request)
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if err != nil {
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return err
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}
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if response.StatusCode != http.StatusOK {
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return errors.New(response.Status)
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}
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var resp config.RegisterResponse
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if err := json.NewDecoder(response.Body).Decode(&resp); err != nil {
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return errors.New("unmarshal cert error " + err.Error())
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}
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//x509.Certificate.PublicKey is an interface so json encoding/decoding results in a string rather that []byte
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//the pubkeys are included in the response so the values in the certificate can be updated appropriately
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resp.CA.PublicKey = resp.CAPubKey
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resp.Cert.PublicKey = resp.CertPubKey
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if err := tls.SaveCert(ncutils.GetNetclientServerPath(cfg.Server.Server)+"/", "root.pem", &resp.CA); err != nil {
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return err
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}
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if err := tls.SaveCert(ncutils.GetNetclientServerPath(cfg.Server.Server)+"/", "client.pem", &resp.Cert); err != nil {
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return err
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}
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logger.Log(0, "certificates/key saved ")
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//join the network defined in the token
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return nil
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}
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