status-go/server/client.go

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package server
import (
"bytes"
"crypto/ecdsa"
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"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
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"net/http"
"net/url"
)
type PairingClient struct {
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*http.Client
baseAddress *url.URL
certPEM []byte
privateKey *ecdsa.PrivateKey
serverMode Mode
payload *PayloadManager
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}
func NewPairingClient(c *ConnectionParams) (*PairingClient, error) {
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u, certPem, err := c.Generate()
if err != nil {
return nil, err
}
rootCAs, err := x509.SystemCertPool()
if err != nil {
return nil, err
}
if ok := rootCAs.AppendCertsFromPEM(certPem); !ok {
return nil, fmt.Errorf("failed to append certPem to rootCAs")
}
tr := &http.Transport{
TLSClientConfig: &tls.Config{
MinVersion: tls.VersionTLS12,
InsecureSkipVerify: false, // MUST BE FALSE
RootCAs: rootCAs,
},
}
pm, err := NewPayloadManager(c.privateKey)
if err != nil {
return nil, err
}
return &PairingClient{
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Client: &http.Client{Transport: tr},
baseAddress: u,
certPEM: certPem,
privateKey: c.privateKey,
serverMode: c.serverMode,
payload: pm,
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}, nil
}
func (c *PairingClient) MountPayload(data []byte) error {
return c.payload.Mount(data)
}
func (c *PairingClient) PairAccount() error {
switch c.serverMode {
case Receiving:
return c.sendAccountData()
case Sending:
return c.receiveAccountData()
default:
return fmt.Errorf("unrecognised server mode '%d'", c.serverMode)
}
}
func (c *PairingClient) sendAccountData() error {
c.baseAddress.Path = pairingReceive
_, err := c.Post(c.baseAddress.String(), "application/octet-stream", bytes.NewBuffer(c.payload.ToSend()))
if err != nil {
return err
}
return nil
}
func (c *PairingClient) receiveAccountData() error {
c.baseAddress.Path = pairingSend
resp, err := c.Get(c.baseAddress.String())
if err != nil {
return err
}
payload, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
return c.payload.Receive(payload)
}