Support 2FA #68
Description
2FA support in pcloudcc is incomplete to nonexistent. Implement.
From code documentation:
/* Upon seein a status of PSTATUS_TFA_REQUIRED the application is supposed to
* let the user know that two factor authentication is enabled and provide the
* user with three choices 1) get code by SMS. After that the application calls
* psync_tfa_send_sms(), possibly display the returned phone number, wait for
* code input and call psync_tfa_set_code(code, trusted, 0) 2) get code by
* notification at any other logged in device. Application calls
* psync_tfa_send_nofification(), possibly display logged devices list, wait for
* code input and call psync_tfa_set_code(code, trusted, 0) 3) use recovery
* code, in this case the user provides the recovery code and application calls
* psync_tfa_set_code(code, trusted, 1)
*
* psync_tfa_has_devices() - can be called after PSTATUS_TFA_REQUIRED is
* received and returns true if the user has other devices logged in
*
* psync_tfa_type() - can be called after PSTATUS_TFA_REQUIRED is received and
* returns TFA type. 1 - msisdn 2 - google authenticator
*
* psync_tfa_send_sms() - sends SMS with two factor authentication code to the
* phone number on file. If parameters country_code and phone_number are not
* NULL, those are filled with user's phone number (split in two parts). In this
* case the caller needs to free the returned values. Returns -1 in case of
* network error or one of the positive error codes listed at
* https://docsqa2.pcloud.com/methods/auth/tfa_sendcodeviasms.html
*
* psync_tfa_send_nofification() - sends notification with two factor
* authentication code to all already logged in devices. If devices_list is not
* null it is filled in with list of user's devices. In this case the caller is
* supposed to free the list with a single call to psync_free(). Returns -1 in
* case of network error or one of the positive error codes listed at
* https://docsqa2.pcloud.com/methods/auth/tfa_sendcodeviasysnotification.html
*
* psync_tfa_set_code() - sets the two factor code that is to be used for
* logging in. If "trusted" is set, this device will be marked trusted and will
* not require two factor authentication in the future. The "is_recovery"
* parameter is supposed to be set if a recovery code is used and be zero in
* case of SMS or notification code. Note that the function is void. Bad code
* will be signalled with status change to PSTATUS_BAD_LOGIN_DATA. In that case
* the login procedure can either be retried from the beggining or from
* sending/providing two factor authentication code.
*
*/