2022-04-14 03:25:35 +08:00
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package functions
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import (
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2022-04-14 19:15:50 +08:00
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"bytes"
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"crypto/ed25519"
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"crypto/rand"
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2022-04-14 03:25:35 +08:00
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"encoding/json"
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"errors"
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2022-04-14 05:33:40 +08:00
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"log"
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2022-04-14 03:25:35 +08:00
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"net/http"
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"os"
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2022-04-14 03:25:35 +08:00
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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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2022-04-16 03:03:54 +08:00
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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) 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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//create certificate request
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public, 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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name := tls.NewCName(os.Getenv("HOSTNAME"))
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csr, err := tls.NewCSR(private, name)
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if err != nil {
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return err
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}
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data := config.RegisterRequest{
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CSR: *csr,
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Key: public,
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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 := 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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2022-04-14 06:22:03 +08:00
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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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responseCA, err := config.ConvertBytesToCert(resp.CABytes)
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if err != nil {
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return errors.New("could not acquire CA from response " + err.Error())
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}
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responseCert, err := config.ConvertBytesToCert(resp.CertBytes)
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if err != nil {
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return errors.New("could not acquire client certificate from response " + err.Error())
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}
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if err := tls.SaveCert(ncutils.GetNetclientPath()+cfg.Server.Server+"/", "root.pem", &responseCA); err != nil {
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return err
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}
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if err := tls.SaveCert(ncutils.GetNetclientPath()+cfg.Server.Server+"/", "client.pem", &responseCert); 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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logger.Log(0, "certificates/key saved ")
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return nil
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}
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