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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-23 23:08:14 +00:00
trezor-firmware/extmod/modtrezormsg/modtrezormsg.c

188 lines
6.6 KiB
C

/*
* Copyright (c) Pavol Rusnak, SatoshiLabs
*
* Licensed under TREZOR License
* see LICENSE file for details
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "py/nlr.h"
#include "py/runtime.h"
#include "py/binary.h"
#include "py/mphal.h"
#include "py/objstr.h"
#if MICROPY_PY_TREZORMSG
#if defined STM32_HAL_H
#include "modtrezormsg-stmhal.h"
#elif defined UNIX
#include "modtrezormsg-unix.h"
#else
#error Unsupported port. Only STMHAL and UNIX ports are supported.
#endif
#define MAX_INTERFACES 8
typedef struct _mp_obj_Msg_t {
mp_obj_base_t base;
uint16_t usage_pages[MAX_INTERFACES];
mp_uint_t interface_count;
} mp_obj_Msg_t;
STATIC mp_obj_t mod_TrezorMsg_Msg_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 0, false);
msg_init();
mp_obj_Msg_t *o = m_new_obj(mp_obj_Msg_t);
o->base.type = type;
o->interface_count = 0;
return MP_OBJ_FROM_PTR(o);
}
/// def trezor.msg.set_interfaces(ifaces: list/tuple) -> None:
/// '''
/// Configures USB interfaces with a list/tuple of (usage_page, ...)
/// '''
STATIC mp_obj_t mod_TrezorMsg_Msg_set_interfaces(mp_obj_t self, mp_obj_t ifaces) {
mp_uint_t iface_cnt;
mp_obj_t *usage_pages;
if (MP_OBJ_IS_TYPE(ifaces, &mp_type_tuple)) {
mp_obj_tuple_get(ifaces, &iface_cnt, &usage_pages);
} else
if (MP_OBJ_IS_TYPE(ifaces, &mp_type_list)) {
mp_obj_list_get(ifaces, &iface_cnt, &usage_pages);
} else {
mp_raise_TypeError("List or tuple expected");
}
if (iface_cnt > MAX_INTERFACES) {
mp_raise_ValueError("Maximum number of interfaces exceeded");
}
mp_obj_Msg_t *o = MP_OBJ_TO_PTR(self);
for (mp_uint_t i = 0; i < iface_cnt; i++) {
uint16_t usage_page = mp_obj_get_int(usage_pages[i]);
o->usage_pages[i] = usage_page;
}
o->interface_count = iface_cnt;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorMsg_Msg_set_interfaces_obj, mod_TrezorMsg_Msg_set_interfaces);
/// def trezor.msg.get_interfaces() -> tuple:
/// '''
/// Reads a tuple (of usage pages) of configured USB interfaces
/// '''
STATIC mp_obj_t mod_TrezorMsg_Msg_get_interfaces(mp_obj_t self) {
mp_obj_Msg_t *o = MP_OBJ_TO_PTR(self);
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(o->interface_count, NULL));
for (mp_uint_t i = 0; i < o->interface_count; i++) {
tuple->items[i] = MP_OBJ_NEW_SMALL_INT(o->usage_pages[i]);
}
return MP_OBJ_FROM_PTR(tuple);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorMsg_Msg_get_interfaces_obj, mod_TrezorMsg_Msg_get_interfaces);
/// def trezor.msg.send(usage_page: int, message: bytes) -> int:
/// '''
/// Sends message using USB HID (device) or UDP (emulator).
/// '''
STATIC mp_obj_t mod_TrezorMsg_Msg_send(mp_obj_t self, mp_obj_t usage_page, mp_obj_t message) {
mp_obj_Msg_t *o = MP_OBJ_TO_PTR(self);
if (o->interface_count == 0) {
mp_raise_TypeError("No interfaces registered");
}
uint16_t up = mp_obj_get_int(usage_page);
for (uint8_t i = 0; i < o->interface_count; i++) {
if (o->usage_pages[i] == up) {
mp_buffer_info_t msg;
mp_get_buffer_raise(message, &msg, MP_BUFFER_READ);
ssize_t r = msg_send(i, msg.buf, msg.len);
return MP_OBJ_NEW_SMALL_INT(r);
}
}
mp_raise_TypeError("Interface not found");
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorMsg_Msg_send_obj, mod_TrezorMsg_Msg_send);
#define TICK_RESOLUTION 1000
#define TOUCH_IFACE 0
/// def trezor.msg.select(timeout_us: int) -> tuple:
/// '''
/// Polls the event queue and returns the event object.
/// Function returns None if timeout specified in microseconds is reached.
/// '''
STATIC mp_obj_t mod_TrezorMsg_Msg_select(mp_obj_t self, mp_obj_t timeout_us) {
mp_obj_Msg_t *o = MP_OBJ_TO_PTR(self);
int timeout = mp_obj_get_int(timeout_us);
if (timeout < 0) {
timeout = 0;
}
for(;;) {
uint32_t e = msg_poll_ui_event();
if (e) {
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(4, NULL));
tuple->items[0] = MP_OBJ_NEW_SMALL_INT(TOUCH_IFACE);
tuple->items[1] = MP_OBJ_NEW_SMALL_INT((e & 0xFF0000) >> 16); // event type
tuple->items[2] = MP_OBJ_NEW_SMALL_INT((e & 0xFF00) >> 8); // x position
tuple->items[3] = MP_OBJ_NEW_SMALL_INT((e & 0xFF)); // y position
return MP_OBJ_FROM_PTR(tuple);
}
// check for interfaces only when some have been registered
if (o->interface_count > 0) {
uint8_t iface;
uint8_t recvbuf[64];
ssize_t l = msg_recv(&iface, recvbuf, 64);
if (l > 0 && iface < o->interface_count) {
uint16_t iface_usage_page = o->usage_pages[iface];
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(2, NULL));
tuple->items[0] = MP_OBJ_NEW_SMALL_INT(iface_usage_page);
tuple->items[1] = mp_obj_new_str_of_type(&mp_type_bytes, recvbuf, l);
return MP_OBJ_FROM_PTR(tuple);
}
}
if (timeout <= 0) {
break;
}
#if defined UNIX
mp_hal_delay_us(TICK_RESOLUTION);
#else
mp_hal_delay_us_fast(TICK_RESOLUTION);
#endif
timeout -= TICK_RESOLUTION;
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_TrezorMsg_Msg_select_obj, mod_TrezorMsg_Msg_select);
STATIC const mp_rom_map_elem_t mod_TrezorMsg_Msg_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_select), MP_ROM_PTR(&mod_TrezorMsg_Msg_select_obj) },
{ MP_ROM_QSTR(MP_QSTR_send), MP_ROM_PTR(&mod_TrezorMsg_Msg_send_obj) },
{ MP_ROM_QSTR(MP_QSTR_set_interfaces), MP_ROM_PTR(&mod_TrezorMsg_Msg_set_interfaces_obj) },
{ MP_ROM_QSTR(MP_QSTR_get_interfaces), MP_ROM_PTR(&mod_TrezorMsg_Msg_get_interfaces_obj) },
};
STATIC MP_DEFINE_CONST_DICT(mod_TrezorMsg_Msg_locals_dict, mod_TrezorMsg_Msg_locals_dict_table);
STATIC const mp_obj_type_t mod_TrezorMsg_Msg_type = {
{ &mp_type_type },
.name = MP_QSTR_Msg,
.make_new = mod_TrezorMsg_Msg_make_new,
.locals_dict = (void*)&mod_TrezorMsg_Msg_locals_dict,
};
STATIC const mp_rom_map_elem_t mp_module_TrezorMsg_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_TrezorMsg) },
{ MP_ROM_QSTR(MP_QSTR_Msg), MP_ROM_PTR(&mod_TrezorMsg_Msg_type) },
};
STATIC MP_DEFINE_CONST_DICT(mp_module_TrezorMsg_globals, mp_module_TrezorMsg_globals_table);
const mp_obj_module_t mp_module_TrezorMsg = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&mp_module_TrezorMsg_globals,
};
#endif // MICROPY_PY_TREZORMSG