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micropython/stmhal/modusocket.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include "stm32f4xx_hal.h"
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "objtuple.h"
#include "objlist.h"
#include "runtime.h"
#include "modnetwork.h"
/******************************************************************************/
// socket class
STATIC const mp_obj_type_t socket_type;
// constructor socket(family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None)
STATIC mp_obj_t socket_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 4, false);
// create socket object (not bound to any NIC yet)
mod_network_socket_obj_t *s = m_new_obj_with_finaliser(mod_network_socket_obj_t);
s->base.type = (mp_obj_t)&socket_type;
s->nic = MP_OBJ_NULL;
s->nic_type = NULL;
s->u_param.domain = MOD_NETWORK_AF_INET;
s->u_param.type = MOD_NETWORK_SOCK_STREAM;
s->u_param.fileno = -1;
if (n_args >= 1) {
s->u_param.domain = mp_obj_get_int(args[0]);
if (n_args >= 2) {
s->u_param.type = mp_obj_get_int(args[1]);
if (n_args >= 4) {
s->u_param.fileno = mp_obj_get_int(args[3]);
}
}
}
return s;
}
STATIC void socket_select_nic(mod_network_socket_obj_t *self, const byte *ip) {
if (self->nic == MP_OBJ_NULL) {
// select NIC based on IP
self->nic = mod_network_find_nic(ip);
self->nic_type = (mod_network_nic_type_t*)mp_obj_get_type(self->nic);
// call the NIC to open the socket
int _errno;
if (self->nic_type->socket(self, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
}
}
// method socket.close()
STATIC mp_obj_t socket_close(mp_obj_t self_in) {
mod_network_socket_obj_t *self = self_in;
if (self->nic != MP_OBJ_NULL) {
self->nic_type->close(self);
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close);
// method socket.bind(address)
STATIC mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
mod_network_socket_obj_t *self = self_in;
// get address
uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
// check if we need to select a NIC
socket_select_nic(self, ip);
// call the NIC to bind the socket
int _errno;
if (self->nic_type->bind(self, ip, port, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_bind_obj, socket_bind);
// method socket.listen(backlog)
STATIC mp_obj_t socket_listen(mp_obj_t self_in, mp_obj_t backlog) {
mod_network_socket_obj_t *self = self_in;
if (self->nic == MP_OBJ_NULL) {
// not connected
// TODO I think we can listen even if not bound...
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(ENOTCONN)));
}
int _errno;
if (self->nic_type->listen(self, mp_obj_get_int(backlog), &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_listen_obj, socket_listen);
// method socket.accept()
STATIC mp_obj_t socket_accept(mp_obj_t self_in) {
mod_network_socket_obj_t *self = self_in;
// create new socket object
mod_network_socket_obj_t *socket2 = m_new_obj_with_finaliser(mod_network_socket_obj_t);
socket2->base.type = (mp_obj_t)&socket_type;
socket2->nic = self->nic;
socket2->nic_type = self->nic_type;
// accept incoming connection
uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
mp_uint_t port;
int _errno;
if (self->nic_type->accept(self, socket2, ip, &port, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
// make the return value
mp_obj_tuple_t *client = mp_obj_new_tuple(2, NULL);
client->items[0] = socket2;
client->items[1] = mod_network_format_inet_addr(ip, port);
return client;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(socket_accept_obj, socket_accept);
// method socket.connect(address)
STATIC mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
mod_network_socket_obj_t *self = self_in;
// get address
uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
// check if we need to select a NIC
socket_select_nic(self, ip);
// call the NIC to connect the socket
int _errno;
if (self->nic_type->connect(self, ip, port, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_connect_obj, socket_connect);
// method socket.send(bytes)
STATIC mp_obj_t socket_send(mp_obj_t self_in, mp_obj_t buf_in) {
mod_network_socket_obj_t *self = self_in;
if (self->nic == MP_OBJ_NULL) {
// not connected
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(EPIPE)));
}
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
int _errno;
mp_uint_t ret = self->nic_type->send(self, bufinfo.buf, bufinfo.len, &_errno);
if (ret == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_obj_new_int_from_uint(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_send_obj, socket_send);
// method socket.recv(bufsize)
STATIC mp_obj_t socket_recv(mp_obj_t self_in, mp_obj_t len_in) {
mod_network_socket_obj_t *self = self_in;
if (self->nic == MP_OBJ_NULL) {
// not connected
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(ENOTCONN)));
}
mp_int_t len = mp_obj_get_int(len_in);
byte *buf;
mp_obj_t ret_obj = mp_obj_str_builder_start(&mp_type_bytes, len, &buf);
int _errno;
mp_uint_t ret = self->nic_type->recv(self, buf, len, &_errno);
if (ret == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
if (ret == 0) {
return mp_const_empty_bytes;
}
return mp_obj_str_builder_end_with_len(ret_obj, ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recv_obj, socket_recv);
// method socket.sendto(bytes, address)
STATIC mp_obj_t socket_sendto(mp_obj_t self_in, mp_obj_t data_in, mp_obj_t addr_in) {
mod_network_socket_obj_t *self = self_in;
// get the data
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(data_in, &bufinfo, MP_BUFFER_READ);
// get address
uint8_t ip[MOD_NETWORK_IPADDR_BUF_SIZE];
mp_uint_t port = mod_network_parse_inet_addr(addr_in, ip);
// check if we need to select a NIC
socket_select_nic(self, ip);
// call the NIC to sendto
int _errno;
mp_int_t ret = self->nic_type->sendto(self, bufinfo.buf, bufinfo.len, ip, port, &_errno);
if (ret == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_obj_new_int(ret);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(socket_sendto_obj, socket_sendto);
// method socket.recvfrom(bufsize)
STATIC mp_obj_t socket_recvfrom(mp_obj_t self_in, mp_obj_t len_in) {
mod_network_socket_obj_t *self = self_in;
if (self->nic == MP_OBJ_NULL) {
// not connected
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(ENOTCONN)));
}
mp_int_t len = mp_obj_get_int(len_in);
byte *buf;
mp_obj_t ret_obj = mp_obj_str_builder_start(&mp_type_bytes, len, &buf);
byte ip[4];
mp_uint_t port;
int _errno;
mp_int_t ret = self->nic_type->recvfrom(self, buf, len, ip, &port, &_errno);
if (ret == -1) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
if (ret == 0) {
ret_obj = mp_const_empty_bytes;
} else {
ret_obj = mp_obj_str_builder_end_with_len(ret_obj, ret);
}
mp_obj_t tuple[2] = {
ret_obj,
mod_network_format_inet_addr(ip, port),
};
return mp_obj_new_tuple(2, tuple);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_recvfrom_obj, socket_recvfrom);
// method socket.setsockopt(level, optname, value)
STATIC mp_obj_t socket_setsockopt(mp_uint_t n_args, const mp_obj_t *args) {
mod_network_socket_obj_t *self = args[0];
mp_int_t level = mp_obj_get_int(args[1]);
mp_int_t opt = mp_obj_get_int(args[2]);
const void *optval;
mp_uint_t optlen;
if (mp_obj_is_integer(args[3])) {
int val = mp_obj_int_get(args[3]);
optval = &val;
optlen = sizeof(val);
} else {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(args[3], &bufinfo, MP_BUFFER_READ);
optval = bufinfo.buf;
optlen = bufinfo.len;
}
int _errno;
if (self->nic_type->setsockopt(self, level, opt, optval, optlen, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_setsockopt_obj, 4, 4, socket_setsockopt);
// method socket.settimeout(value)
// timeout=0 means non-blocking
// timeout=None means blocking
// otherwise, timeout is in seconds
STATIC mp_obj_t socket_settimeout(mp_obj_t self_in, mp_obj_t timeout_in) {
mod_network_socket_obj_t *self = self_in;
if (self->nic == MP_OBJ_NULL) {
// not connected
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(ENOTCONN)));
}
mp_uint_t timeout;
if (timeout_in == mp_const_none) {
timeout = -1;
} else {
timeout = 1000 * mp_obj_get_float(timeout_in);
}
int _errno;
if (self->nic_type->settimeout(self, timeout, &_errno) != 0) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(_errno)));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_settimeout_obj, socket_settimeout);
// method socket.setblocking(flag)
STATIC mp_obj_t socket_setblocking(mp_obj_t self_in, mp_obj_t blocking) {
if (mp_obj_is_true(blocking)) {
return socket_settimeout(self_in, mp_const_none);
} else {
return socket_settimeout(self_in, MP_OBJ_NEW_SMALL_INT(0));
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(socket_setblocking_obj, socket_setblocking);
STATIC const mp_map_elem_t socket_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___del__), (mp_obj_t)&socket_close_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&socket_close_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_bind), (mp_obj_t)&socket_bind_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_listen), (mp_obj_t)&socket_listen_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_accept), (mp_obj_t)&socket_accept_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_connect), (mp_obj_t)&socket_connect_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&socket_send_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&socket_recv_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_sendto), (mp_obj_t)&socket_sendto_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_recvfrom), (mp_obj_t)&socket_recvfrom_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_setsockopt), (mp_obj_t)&socket_setsockopt_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_settimeout), (mp_obj_t)&socket_settimeout_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_setblocking), (mp_obj_t)&socket_setblocking_obj },
};
STATIC MP_DEFINE_CONST_DICT(socket_locals_dict, socket_locals_dict_table);
mp_uint_t socket_ioctl(mp_obj_t self_in, mp_uint_t request, mp_uint_t arg, int *errcode) {
mod_network_socket_obj_t *self = self_in;
return self->nic_type->ioctl(self, request, arg, errcode);
}
STATIC const mp_stream_p_t socket_stream_p = {
.ioctl = socket_ioctl,
.is_text = false,
};
STATIC const mp_obj_type_t socket_type = {
{ &mp_type_type },
.name = MP_QSTR_socket,
.make_new = socket_make_new,
.stream_p = &socket_stream_p,
.locals_dict = (mp_obj_t)&socket_locals_dict,
};
/******************************************************************************/
// usocket module
// function usocket.getaddrinfo(host, port)
STATIC mp_obj_t mod_usocket_getaddrinfo(mp_obj_t host_in, mp_obj_t port_in) {
mp_uint_t hlen;
const char *host = mp_obj_str_get_data(host_in, &hlen);
mp_int_t port = mp_obj_get_int(port_in);
// find a NIC that can do a name lookup
for (mp_uint_t i = 0; i < mod_network_nic_list.len; i++) {
mp_obj_t nic = mod_network_nic_list.items[i];
mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);
if (nic_type->gethostbyname != NULL) {
uint8_t out_ip[MOD_NETWORK_IPADDR_BUF_SIZE];
int ret = nic_type->gethostbyname(nic, host, hlen, out_ip);
if (ret != 0) {
// TODO CPython raises: socket.gaierror: [Errno -2] Name or service not known
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(ret)));
}
mp_obj_tuple_t *tuple = mp_obj_new_tuple(5, NULL);
tuple->items[0] = MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_AF_INET);
tuple->items[1] = MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_SOCK_STREAM);
tuple->items[2] = MP_OBJ_NEW_SMALL_INT(0);
tuple->items[3] = MP_OBJ_NEW_QSTR(MP_QSTR_);
tuple->items[4] = mod_network_format_inet_addr(out_ip, port);
return mp_obj_new_list(1, (mp_obj_t*)&tuple);
}
}
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "no available NIC"));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_usocket_getaddrinfo_obj, mod_usocket_getaddrinfo);
STATIC const mp_map_elem_t mp_module_usocket_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_usocket) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_socket), (mp_obj_t)&socket_type },
{ MP_OBJ_NEW_QSTR(MP_QSTR_getaddrinfo), (mp_obj_t)&mod_usocket_getaddrinfo_obj },
// class constants
{ MP_OBJ_NEW_QSTR(MP_QSTR_AF_INET), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_AF_INET) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_AF_INET6), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_AF_INET6) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_STREAM), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_SOCK_STREAM) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_DGRAM), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_SOCK_DGRAM) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_SOCK_RAW), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_SOCK_RAW) },
/*
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_IP), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_IP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_ICMP), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_ICMP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_IPV4), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_IPV4) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_TCP), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_TCP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_UDP), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_UDP) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_IPV6), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_IPV6) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_IPPROTO_RAW), MP_OBJ_NEW_SMALL_INT(MOD_NETWORK_IPPROTO_RAW) },
*/
};
STATIC MP_DEFINE_CONST_DICT(mp_module_usocket_globals, mp_module_usocket_globals_table);
const mp_obj_module_t mp_module_usocket = {
.base = { &mp_type_module },
.name = MP_QSTR_usocket,
.globals = (mp_obj_dict_t*)&mp_module_usocket_globals,
};
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