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|
package proton
import (
"bytes"
"context"
"encoding/base64"
"errors"
"github.com/ProtonMail/go-srp"
"github.com/ProtonMail/gopenpgp/v2/crypto"
"github.com/go-resty/resty/v2"
)
var ErrInvalidProof = errors.New("unexpected server proof")
func (m *Manager) NewClient(uid, acc, ref string) *Client {
return newClient(m, uid).withAuth(acc, ref)
}
func (m *Manager) NewClientWithRefresh(ctx context.Context, uid, ref string) (*Client, Auth, error) {
c := newClient(m, uid)
auth, err := m.authRefresh(ctx, uid, ref)
if err != nil {
return nil, Auth{}, err
}
return c.withAuth(auth.AccessToken, auth.RefreshToken), auth, nil
}
func (m *Manager) NewClientWithLogin(ctx context.Context, username string, password []byte) (*Client, Auth, error) {
info, err := m.AuthInfo(ctx, AuthInfoReq{Username: username})
if err != nil {
return nil, Auth{}, err
}
srpAuth, err := srp.NewAuth(info.Version, username, password, info.Salt, info.Modulus, info.ServerEphemeral)
if err != nil {
return nil, Auth{}, err
}
proofs, err := srpAuth.GenerateProofs(2048)
if err != nil {
return nil, Auth{}, err
}
auth, err := m.auth(ctx, AuthReq{
Username: username,
ClientProof: base64.StdEncoding.EncodeToString(proofs.ClientProof),
ClientEphemeral: base64.StdEncoding.EncodeToString(proofs.ClientEphemeral),
SRPSession: info.SRPSession,
})
if err != nil {
return nil, Auth{}, err
}
serverProof, err := base64.StdEncoding.DecodeString(auth.ServerProof)
if err != nil {
return nil, Auth{}, err
}
if m.verifyProofs {
if !bytes.Equal(serverProof, proofs.ExpectedServerProof) {
return nil, Auth{}, ErrInvalidProof
}
}
return newClient(m, auth.UID).withAuth(auth.AccessToken, auth.RefreshToken), auth, nil
}
func (m *Manager) AuthInfo(ctx context.Context, req AuthInfoReq) (AuthInfo, error) {
var res struct {
AuthInfo
}
if _, err := m.r(ctx).SetBody(req).SetResult(&res).Post("/auth/v4/info"); err != nil {
return AuthInfo{}, err
}
return res.AuthInfo, nil
}
func (m *Manager) AuthModulus(ctx context.Context) (AuthModulus, error) {
var res AuthModulus
if _, err := m.r(ctx).SetResult(&res).Get("/auth/v4/modulus"); err != nil {
return AuthModulus{}, err
}
return res, nil
}
func (m *Manager) auth(ctx context.Context, req AuthReq) (Auth, error) {
var res struct {
Auth
}
if _, err := m.r(ctx).SetBody(req).SetResult(&res).Post("/auth/v4"); err != nil {
return Auth{}, err
}
return res.Auth, nil
}
func (m *Manager) authRefresh(ctx context.Context, uid, ref string) (Auth, error) {
state, err := crypto.RandomToken(32)
if err != nil {
return Auth{}, err
}
req := AuthRefreshReq{
UID: uid,
RefreshToken: ref,
ResponseType: "token",
GrantType: "refresh_token",
RedirectURI: "https://protonmail.ch",
State: string(state),
}
var res struct {
Auth
}
if resp, err := m.r(ctx).SetBody(req).SetResult(&res).Post("/auth/v4/refresh"); err != nil {
if resp != nil {
return Auth{}, &resty.ResponseError{Response: resp, Err: err}
}
return Auth{}, err
}
return res.Auth, nil
}
|
