557c9d5264
Unlike CPython socket, microsocket object already implements stream protocol (read/write methods), so makefile() just returns object itself. TODO: this doesn't take care of arguments CPython's makefile() may accept.
376 lines
11 KiB
C
376 lines
11 KiB
C
#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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#include "nlr.h"
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "objtuple.h"
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#include "objarray.h"
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#include "runtime.h"
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#include "stream.h"
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#define MICROPY_SOCKET_EXTRA (0)
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typedef struct _mp_obj_socket_t {
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mp_obj_base_t base;
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int fd;
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} mp_obj_socket_t;
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static const mp_obj_type_t microsocket_type;
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// Helper functions
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#define RAISE_ERRNO(err_flag, error_val) \
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{ if (err_flag == -1) \
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{ nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[Errno %d]", error_val)); } }
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static void get_buffer(mp_obj_t obj, buffer_info_t *bufinfo) {
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mp_obj_base_t *o = (mp_obj_base_t *)obj;
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if (o->type->buffer_p.get_buffer == NULL) {
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goto error;
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}
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o->type->buffer_p.get_buffer(o, bufinfo, BUFFER_READ);
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if (bufinfo->buf == NULL) {
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goto error;
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}
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return;
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error:
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nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "Operation not supported"));
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}
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static mp_obj_socket_t *socket_new(int fd) {
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mp_obj_socket_t *o = m_new_obj(mp_obj_socket_t);
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o->base.type = µsocket_type;
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o->fd = fd;
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return o;
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}
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static void socket_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
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mp_obj_socket_t *self = self_in;
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print(env, "<_socket %d>", self->fd);
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}
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static machine_int_t socket_read(mp_obj_t o_in, void *buf, machine_uint_t size, int *errcode) {
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mp_obj_socket_t *o = o_in;
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machine_int_t r = read(o->fd, buf, size);
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if (r == -1) {
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*errcode = errno;
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}
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return r;
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}
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static machine_int_t socket_write(mp_obj_t o_in, const void *buf, machine_uint_t size, int *errcode) {
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mp_obj_socket_t *o = o_in;
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machine_int_t r = write(o->fd, buf, size);
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if (r == -1) {
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*errcode = errno;
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}
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return r;
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}
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static mp_obj_t socket_close(mp_obj_t self_in) {
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mp_obj_socket_t *self = self_in;
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close(self->fd);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close);
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static mp_obj_t socket_fileno(mp_obj_t self_in) {
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mp_obj_socket_t *self = self_in;
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return MP_OBJ_NEW_SMALL_INT(self->fd);
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(socket_fileno_obj, socket_fileno);
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static mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) {
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mp_obj_socket_t *self = self_in;
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buffer_info_t bufinfo;
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get_buffer(addr_in, &bufinfo);
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int r = connect(self->fd, (const struct sockaddr *)bufinfo.buf, bufinfo.len);
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RAISE_ERRNO(r, errno);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_2(socket_connect_obj, socket_connect);
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static mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) {
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mp_obj_socket_t *self = self_in;
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buffer_info_t bufinfo;
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get_buffer(addr_in, &bufinfo);
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int r = bind(self->fd, (const struct sockaddr *)bufinfo.buf, bufinfo.len);
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RAISE_ERRNO(r, errno);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_2(socket_bind_obj, socket_bind);
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static mp_obj_t socket_listen(mp_obj_t self_in, mp_obj_t backlog_in) {
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mp_obj_socket_t *self = self_in;
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int r = listen(self->fd, MP_OBJ_SMALL_INT_VALUE(backlog_in));
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RAISE_ERRNO(r, errno);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_2(socket_listen_obj, socket_listen);
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static mp_obj_t socket_accept(mp_obj_t self_in) {
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mp_obj_socket_t *self = self_in;
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struct sockaddr addr;
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socklen_t addr_len = sizeof(addr);
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int fd = accept(self->fd, &addr, &addr_len);
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RAISE_ERRNO(fd, errno);
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mp_obj_tuple_t *t = mp_obj_new_tuple(2, NULL);
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t->items[0] = socket_new(fd);
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t->items[1] = mp_obj_new_bytearray(addr_len, &addr);
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return t;
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(socket_accept_obj, socket_accept);
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static mp_obj_t socket_recv(uint n_args, const mp_obj_t *args) {
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mp_obj_socket_t *self = args[0];
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int sz = MP_OBJ_SMALL_INT_VALUE(args[1]);
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int flags = 0;
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if (n_args > 2) {
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flags = MP_OBJ_SMALL_INT_VALUE(args[2]);
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}
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char *buf = m_new(char, sz);
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int out_sz = recv(self->fd, buf, sz, flags);
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RAISE_ERRNO(out_sz, errno);
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buf = m_realloc(buf, sz, out_sz);
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return MP_OBJ_NEW_QSTR(qstr_from_strn_take(buf, out_sz, out_sz));
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}
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static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_recv_obj, 2, 3, socket_recv);
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static mp_obj_t socket_send(uint n_args, const mp_obj_t *args) {
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mp_obj_socket_t *self = args[0];
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int flags = 0;
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if (n_args > 2) {
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flags = MP_OBJ_SMALL_INT_VALUE(args[2]);
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}
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uint sz;
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const char *buf = mp_obj_str_get_data(args[1], &sz);
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int out_sz = send(self->fd, buf, sz, flags);
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RAISE_ERRNO(out_sz, errno);
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return MP_OBJ_NEW_SMALL_INT((machine_int_t)out_sz);
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}
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static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_send_obj, 2, 3, socket_send);
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static mp_obj_t socket_setsockopt(uint n_args, const mp_obj_t *args) {
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mp_obj_socket_t *self = args[0];
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int level = MP_OBJ_SMALL_INT_VALUE(args[1]);
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int option = mp_obj_get_int(args[2]);
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const void *optval;
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socklen_t optlen;
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if (MP_OBJ_IS_INT(args[3])) {
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int val = mp_obj_int_get(args[3]);
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optval = &val;
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optlen = sizeof(val);
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} else {
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buffer_info_t bufinfo;
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get_buffer(args[3], &bufinfo);
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optval = bufinfo.buf;
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optlen = bufinfo.len;
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}
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int r = setsockopt(self->fd, level, option, optval, optlen);
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RAISE_ERRNO(r, errno);
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return mp_const_none;
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}
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static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_setsockopt_obj, 4, 4, socket_setsockopt);
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static mp_obj_t socket_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
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int family = AF_INET;
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int type = SOCK_STREAM;
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int proto = 0;
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if (n_args > 0) {
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assert(MP_OBJ_IS_SMALL_INT(args[0]));
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family = MP_OBJ_SMALL_INT_VALUE(args[0]);
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if (n_args > 1) {
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assert(MP_OBJ_IS_SMALL_INT(args[1]));
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type = MP_OBJ_SMALL_INT_VALUE(args[1]);
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if (n_args > 2) {
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assert(MP_OBJ_IS_SMALL_INT(args[2]));
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proto = MP_OBJ_SMALL_INT_VALUE(args[2]);
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}
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}
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}
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int fd = socket(family, type, proto);
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RAISE_ERRNO(fd, errno);
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return socket_new(fd);
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}
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static const mp_method_t microsocket_type_methods[] = {
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{ "fileno", &socket_fileno_obj },
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{ "makefile", &mp_identity_obj },
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{ "read", &mp_stream_read_obj },
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{ "readall", &mp_stream_readall_obj },
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{ "readline", &mp_stream_unbuffered_readline_obj},
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{ "write", &mp_stream_write_obj },
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{ "connect", &socket_connect_obj },
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{ "bind", &socket_bind_obj },
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{ "listen", &socket_listen_obj },
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{ "accept", &socket_accept_obj },
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{ "recv", &socket_recv_obj },
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{ "send", &socket_send_obj },
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{ "setsockopt", &socket_setsockopt_obj },
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{ "close", &socket_close_obj },
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#if MICROPY_SOCKET_EXTRA
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{ "recv", &mp_stream_read_obj },
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{ "send", &mp_stream_write_obj },
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#endif
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{ NULL, NULL },
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};
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static const mp_obj_type_t microsocket_type = {
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{ &mp_const_type },
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"socket",
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.print = socket_print,
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.make_new = socket_make_new,
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.getiter = NULL,
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.iternext = NULL,
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.stream_p = {
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.read = socket_read,
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.write = socket_write,
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},
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.methods = microsocket_type_methods,
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};
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static mp_obj_t mod_socket_htons(mp_obj_t arg) {
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return MP_OBJ_NEW_SMALL_INT((machine_int_t)htons(MP_OBJ_SMALL_INT_VALUE(arg)));
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_htons_obj, mod_socket_htons);
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static mp_obj_t mod_socket_inet_aton(mp_obj_t arg) {
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assert(MP_OBJ_IS_TYPE(arg, &str_type));
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const char *s = mp_obj_str_get_str(arg);
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struct in_addr addr;
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if (!inet_aton(s, &addr)) {
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nlr_jump(mp_obj_new_exception_msg(MP_QSTR_OSError, "Invalid IP address"));
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}
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return mp_obj_new_int(addr.s_addr);
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_inet_aton_obj, mod_socket_inet_aton);
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#if MICROPY_SOCKET_EXTRA
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static mp_obj_t mod_socket_gethostbyname(mp_obj_t arg) {
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assert(MP_OBJ_IS_TYPE(arg, &str_type));
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const char *s = mp_obj_str_get_str(arg);
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struct hostent *h = gethostbyname(s);
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if (h == NULL) {
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nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[Errno %d]", errno));
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}
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assert(h->h_length == 4);
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return mp_obj_new_int(*(int*)*h->h_addr_list);
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}
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static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_gethostbyname_obj, mod_socket_gethostbyname);
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#endif
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static mp_obj_t mod_socket_getaddrinfo(uint n_args, const mp_obj_t *args) {
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// TODO: Implement all args
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assert(n_args == 2);
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assert(MP_OBJ_IS_STR(args[0]));
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const char *host = mp_obj_str_get_str(args[0]);
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const char *serv = NULL;
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// getaddrinfo accepts port in string notation, so however
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// it may seem stupid, we need to convert int to str
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if (MP_OBJ_IS_SMALL_INT(args[1])) {
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int port = MP_OBJ_SMALL_INT_VALUE(args[1]);
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static char buf[20];
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sprintf(buf, "%d", port);
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serv = buf;
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} else {
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serv = mp_obj_str_get_str(args[1]);
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}
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struct addrinfo hints;
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struct addrinfo *addr;
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memset(&hints, 0, sizeof(hints));
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int res = getaddrinfo(host, serv, NULL/*&hints*/, &addr);
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if (res != 0) {
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nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[addrinfo error %d]", res));
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}
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assert(addr);
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mp_obj_t list = rt_build_list(0, NULL);
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for (; addr; addr = addr->ai_next) {
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mp_obj_tuple_t *t = mp_obj_new_tuple(5, NULL);
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t->items[0] = MP_OBJ_NEW_SMALL_INT((machine_int_t)addr->ai_family);
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t->items[1] = MP_OBJ_NEW_SMALL_INT((machine_int_t)addr->ai_socktype);
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t->items[2] = MP_OBJ_NEW_SMALL_INT((machine_int_t)addr->ai_protocol);
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// "canonname will be a string representing the canonical name of the host
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// if AI_CANONNAME is part of the flags argument; else canonname will be empty." ??
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if (addr->ai_canonname) {
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t->items[3] = MP_OBJ_NEW_QSTR(qstr_from_str(addr->ai_canonname));
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} else {
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t->items[3] = mp_const_none;
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}
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t->items[4] = mp_obj_new_bytearray(addr->ai_addrlen, addr->ai_addr);
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rt_list_append(list, t);
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}
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return list;
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}
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static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_socket_getaddrinfo_obj, 2, 6, mod_socket_getaddrinfo);
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extern mp_obj_type_t sockaddr_in_type;
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#define C(name) { #name, name }
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struct sym_entry {
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const char *sym;
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int val;
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} constants[] = {
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C(AF_UNIX),
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C(AF_INET),
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C(AF_INET6),
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C(SOCK_STREAM),
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C(SOCK_DGRAM),
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C(SOCK_RAW),
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C(MSG_DONTROUTE),
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C(MSG_DONTWAIT),
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C(SOL_SOCKET),
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C(SO_BROADCAST),
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C(SO_ERROR),
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C(SO_KEEPALIVE),
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C(SO_LINGER),
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C(SO_REUSEADDR),
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{NULL}
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};
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#undef C
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void microsocket_init() {
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mp_obj_t m = mp_obj_new_module(MP_QSTR_microsocket);
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rt_store_attr(m, MP_QSTR_socket, (mp_obj_t)µsocket_type);
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#if MICROPY_SOCKET_EXTRA
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rt_store_attr(m, MP_QSTR_sockaddr_in, (mp_obj_t)&sockaddr_in_type);
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rt_store_attr(m, MP_QSTR_htons, (mp_obj_t)&mod_socket_htons_obj);
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rt_store_attr(m, MP_QSTR_inet_aton, (mp_obj_t)&mod_socket_inet_aton_obj);
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rt_store_attr(m, MP_QSTR_gethostbyname, (mp_obj_t)&mod_socket_gethostbyname_obj);
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#endif
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rt_store_attr(m, MP_QSTR_getaddrinfo, (mp_obj_t)&mod_socket_getaddrinfo_obj);
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for (struct sym_entry *p = constants; p->sym != NULL; p++) {
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rt_store_attr(m, QSTR_FROM_STR_STATIC(p->sym), MP_OBJ_NEW_SMALL_INT((machine_int_t)p->val));
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}
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}
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