diff --git a/unix/Makefile b/unix/Makefile index 9055909fb4..1bef083ebf 100644 --- a/unix/Makefile +++ b/unix/Makefile @@ -25,6 +25,7 @@ endif SRC_C = \ main.c \ file.c \ + socket.c \ OBJ = $(addprefix $(BUILD)/, $(SRC_C:.c=.o)) $(PY_O) LIB = -lreadline diff --git a/unix/main.c b/unix/main.c index c33a439376..39a772d1eb 100644 --- a/unix/main.c +++ b/unix/main.c @@ -21,6 +21,7 @@ #endif extern const mp_obj_fun_native_t mp_builtin_open_obj; +void rawsocket_init(); static void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) { if (lex == NULL) { @@ -223,6 +224,7 @@ int main(int argc, char **argv) { rt_store_name(qstr_from_str_static("test"), test_obj_new(42)); rt_store_name(qstr_from_str_static("open"), (mp_obj_t)&mp_builtin_open_obj); + rawsocket_init(); // Here is some example code to create a class and instance of that class. // First is the Python, then the C code. diff --git a/unix/socket.c b/unix/socket.c new file mode 100644 index 0000000000..98e9becad3 --- /dev/null +++ b/unix/socket.c @@ -0,0 +1,284 @@ +#include +#include +#include +#include +#include +#include +#include +#include + +#include "nlr.h" +#include "misc.h" +#include "mpconfig.h" +#include "mpqstr.h" +#include "obj.h" +#include "objtuple.h" +#include "objarray.h" +#include "runtime.h" +#include "stream.h" + +#define MICROPY_SOCKET_EXTRA (0) + +typedef struct _mp_obj_socket_t { + mp_obj_base_t base; + int fd; +} mp_obj_socket_t; + +static const mp_obj_type_t rawsocket_type; + +// Helper functions +#define RAISE_ERRNO(err_flag, error_val) \ + { if (err_flag == -1) \ + { nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[Errno %d]", error_val)); } } + +static void get_buffer(mp_obj_t obj, buffer_info_t *bufinfo) { + mp_obj_base_t *o = (mp_obj_base_t *)obj; + if (o->type->buffer_p.get_buffer == NULL) { + goto error; + } + o->type->buffer_p.get_buffer(o, bufinfo, BUFFER_READ); + if (bufinfo->buf == NULL) { + goto error; + } + return; + +error: + nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "Operation not supported")); +} + +static mp_obj_socket_t *socket_new(int fd) { + mp_obj_socket_t *o = m_new_obj(mp_obj_socket_t); + o->base.type = &rawsocket_type; + o->fd = fd; + return o; +} + + +static void socket_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) { + mp_obj_socket_t *self = self_in; + print(env, "<_socket %d>", self->fd); +} + +static machine_int_t socket_read(mp_obj_t o_in, void *buf, machine_uint_t size, int *errcode) { + mp_obj_socket_t *o = o_in; + machine_int_t r = read(o->fd, buf, size); + if (r == -1) { + *errcode = errno; + } + return r; +} + +static machine_int_t socket_write(mp_obj_t o_in, const void *buf, machine_uint_t size, int *errcode) { + mp_obj_socket_t *o = o_in; + machine_int_t r = write(o->fd, buf, size); + if (r == -1) { + *errcode = errno; + } + return r; +} + +static mp_obj_t socket_close(mp_obj_t self_in) { + mp_obj_socket_t *self = self_in; + close(self->fd); + return mp_const_none; +} +static MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close); + +static mp_obj_t socket_connect(mp_obj_t self_in, mp_obj_t addr_in) { + mp_obj_socket_t *self = self_in; + buffer_info_t bufinfo; + get_buffer(addr_in, &bufinfo); + int r = connect(self->fd, (const struct sockaddr *)bufinfo.buf, bufinfo.len); + RAISE_ERRNO(r, errno); + return mp_const_none; +} +static MP_DEFINE_CONST_FUN_OBJ_2(socket_connect_obj, socket_connect); + +static mp_obj_t socket_bind(mp_obj_t self_in, mp_obj_t addr_in) { + mp_obj_socket_t *self = self_in; + buffer_info_t bufinfo; + get_buffer(addr_in, &bufinfo); + int r = bind(self->fd, (const struct sockaddr *)bufinfo.buf, bufinfo.len); + RAISE_ERRNO(r, errno); + return mp_const_none; +} +static MP_DEFINE_CONST_FUN_OBJ_2(socket_bind_obj, socket_bind); + +static mp_obj_t socket_listen(mp_obj_t self_in, mp_obj_t backlog_in) { + mp_obj_socket_t *self = self_in; + int r = listen(self->fd, MP_OBJ_SMALL_INT_VALUE(backlog_in)); + RAISE_ERRNO(r, errno); + return mp_const_none; +} +static MP_DEFINE_CONST_FUN_OBJ_2(socket_listen_obj, socket_listen); + +static mp_obj_t socket_accept(mp_obj_t self_in) { + mp_obj_socket_t *self = self_in; + struct sockaddr addr; + socklen_t addr_len = sizeof(addr); + int fd = accept(self->fd, &addr, &addr_len); + RAISE_ERRNO(fd, errno); + + mp_obj_tuple_t *t = mp_obj_new_tuple(2, NULL); + t->items[0] = socket_new(fd); + t->items[1] = mp_obj_new_bytearray(addr_len, &addr); + + return t; +} +static MP_DEFINE_CONST_FUN_OBJ_1(socket_accept_obj, socket_accept); + +static mp_obj_t socket_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) { + int family = AF_INET; + int type = SOCK_STREAM; + int proto = 0; + + if (n_args > 0) { + assert(MP_OBJ_IS_SMALL_INT(args[0])); + family = MP_OBJ_SMALL_INT_VALUE(args[0]); + if (n_args > 1) { + assert(MP_OBJ_IS_SMALL_INT(args[1])); + type = MP_OBJ_SMALL_INT_VALUE(args[1]); + if (n_args > 2) { + assert(MP_OBJ_IS_SMALL_INT(args[2])); + proto = MP_OBJ_SMALL_INT_VALUE(args[2]); + } + } + } + + int fd = socket(family, type, proto); + RAISE_ERRNO(fd, errno); + return socket_new(fd); +} + +static const mp_method_t rawsocket_type_methods[] = { + { "read", &mp_stream_read_obj }, + { "readall", &mp_stream_readall_obj }, + { "readline", &mp_stream_unbuffered_readline_obj}, + { "write", &mp_stream_write_obj }, + { "connect", &socket_connect_obj }, + { "bind", &socket_bind_obj }, + { "listen", &socket_listen_obj }, + { "accept", &socket_accept_obj }, + { "close", &socket_close_obj }, +#if MICROPY_SOCKET_EXTRA + { "recv", &mp_stream_read_obj }, + { "send", &mp_stream_write_obj }, +#endif + { NULL, NULL }, +}; + +static const mp_obj_type_t rawsocket_type = { + { &mp_const_type }, + "socket", + .print = socket_print, + .make_new = socket_make_new, + .getiter = NULL, + .iternext = NULL, + .stream_p = { + .read = socket_read, + .write = socket_write, + }, + .methods = rawsocket_type_methods, +}; + +static mp_obj_t mod_socket_htons(mp_obj_t arg) { + return MP_OBJ_NEW_SMALL_INT(htons(MP_OBJ_SMALL_INT_VALUE(arg))); +} +static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_htons_obj, mod_socket_htons); + +static mp_obj_t mod_socket_inet_aton(mp_obj_t arg) { + assert(MP_OBJ_IS_TYPE(arg, &str_type)); + const char *s = qstr_str(mp_obj_str_get(arg)); + struct in_addr addr; + if (!inet_aton(s, &addr)) { + nlr_jump(mp_obj_new_exception_msg(MP_QSTR_OSError, "Invalid IP address")); + } + + return mp_obj_new_int(addr.s_addr); +} +static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_inet_aton_obj, mod_socket_inet_aton); + +#if MICROPY_SOCKET_EXTRA +static mp_obj_t mod_socket_gethostbyname(mp_obj_t arg) { + assert(MP_OBJ_IS_TYPE(arg, &str_type)); + const char *s = qstr_str(mp_obj_str_get(arg)); + struct hostent *h = gethostbyname(s); + if (h == NULL) { + nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[Errno %d]", errno)); + } + assert(h->h_length == 4); + return mp_obj_new_int(*(int*)*h->h_addr_list); +} +static MP_DEFINE_CONST_FUN_OBJ_1(mod_socket_gethostbyname_obj, mod_socket_gethostbyname); +#endif + +static mp_obj_t mod_socket_getaddrinfo(int n_args, const mp_obj_t *args) { + // TODO: Implement all args + assert(n_args == 2); + assert(MP_OBJ_IS_TYPE(args[0], &str_type)); + + const char *host = qstr_str(mp_obj_str_get(args[0])); + const char *serv = NULL; + // getaddrinfo accepts port in string notation, so however + // it may seem stupid, we need to convert int to str + if (MP_OBJ_IS_SMALL_INT(args[1])) { + int port = MP_OBJ_SMALL_INT_VALUE(args[1]); + static char buf[20]; + sprintf(buf, "%d", port); + serv = buf; + } else { + serv = qstr_str(mp_obj_str_get(args[1])); + } + + struct addrinfo hints; + struct addrinfo *addr; + memset(&hints, 0, sizeof(hints)); + int res = getaddrinfo(host, serv, NULL/*&hints*/, &addr); + + if (res != 0) { + nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_OSError, "[addrinfo error %d]", res)); + } + assert(addr); + + mp_obj_t list = rt_build_list(0, NULL); + for (; addr; addr = addr->ai_next) { + mp_obj_tuple_t *t = mp_obj_new_tuple(5, NULL); + t->items[0] = MP_OBJ_NEW_SMALL_INT(addr->ai_family); + t->items[1] = MP_OBJ_NEW_SMALL_INT(addr->ai_socktype); + t->items[2] = MP_OBJ_NEW_SMALL_INT(addr->ai_protocol); + // "canonname will be a string representing the canonical name of the host + // if AI_CANONNAME is part of the flags argument; else canonname will be empty." ?? + if (addr->ai_canonname) { + t->items[3] = MP_OBJ_NEW_QSTR(qstr_from_strn_copy(addr->ai_canonname, strlen(addr->ai_canonname))); + } else { + t->items[3] = mp_const_none; + } + t->items[4] = mp_obj_new_bytearray(addr->ai_addrlen, addr->ai_addr); + rt_list_append(list, t); + } + return list; +} +static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_socket_getaddrinfo_obj, 2, 6, mod_socket_getaddrinfo); + +extern mp_obj_type_t sockaddr_in_type; + +#define STORE_INT_CONST(m, name) rt_store_attr(m, qstr_from_str_static(#name), MP_OBJ_NEW_SMALL_INT(name)) + +void socket_init() { + mp_obj_t m = mp_obj_new_module(qstr_from_str_static("rawsocket")); + rt_store_attr(m, qstr_from_str_static("socket"), (mp_obj_t)&rawsocket_type); +#if MICROPY_SOCKET_EXTRA + rt_store_attr(m, qstr_from_str_static("sockaddr_in"), (mp_obj_t)&sockaddr_in_type); + rt_store_attr(m, qstr_from_str_static("htons"), (mp_obj_t)&mod_socket_htons_obj); + rt_store_attr(m, qstr_from_str_static("inet_aton"), (mp_obj_t)&mod_socket_inet_aton_obj); + rt_store_attr(m, qstr_from_str_static("gethostbyname"), (mp_obj_t)&mod_socket_gethostbyname_obj); +#endif + rt_store_attr(m, qstr_from_str_static("getaddrinfo"), (mp_obj_t)&mod_socket_getaddrinfo_obj); + STORE_INT_CONST(m, AF_UNIX); + STORE_INT_CONST(m, AF_INET); + STORE_INT_CONST(m, AF_INET6); + STORE_INT_CONST(m, SOCK_STREAM); + STORE_INT_CONST(m, SOCK_DGRAM); + STORE_INT_CONST(m, SOCK_RAW); + rt_store_name(qstr_from_str_static("rawsocket"), m); +}