1048 lines
30 KiB
C
1048 lines
30 KiB
C
// Module for network
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#include "module.h"
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#include "lauxlib.h"
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#include "platform.h"
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#include "lmem.h"
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#include <string.h>
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#include <strings.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "mem.h"
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#include "osapi.h"
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#include "lwip/err.h"
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#include "lwip/ip_addr.h"
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#include "lwip/dns.h"
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#include "lwip/igmp.h"
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#include "lwip/tcp.h"
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#include "lwip/udp.h"
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#if defined(CLIENT_SSL_ENABLE) && defined(LUA_USE_MODULES_NET) && defined(LUA_USE_MODULES_TLS)
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#define TLS_MODULE_PRESENT
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#endif
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typedef enum net_type {
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TYPE_TCP_SERVER = 0,
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TYPE_TCP_CLIENT,
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TYPE_UDP_SOCKET
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} net_type;
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typedef const char net_table_name[14];
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static const net_table_name NET_TABLES[] = {
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"net.tcpserver",
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"net.tcpsocket",
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"net.udpsocket"
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};
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#define NET_TABLE_TCP_SERVER NET_TABLES[0]
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#define NET_TABLE_TCP_CLIENT NET_TABLES[1]
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#define NET_TABLE_UDP_SOCKET NET_TABLES[2]
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#define TYPE_TCP TYPE_TCP_CLIENT
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#define TYPE_UDP TYPE_UDP_SOCKET
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typedef struct lnet_userdata {
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enum net_type type;
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int self_ref;
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union {
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struct tcp_pcb *tcp_pcb;
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struct udp_pcb *udp_pcb;
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void *pcb;
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};
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union {
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struct {
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int cb_accept_ref;
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int timeout;
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} server;
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struct {
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int wait_dns;
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int cb_dns_ref;
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int cb_receive_ref;
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int cb_sent_ref;
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// Only for TCP:
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int hold;
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int cb_connect_ref;
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int cb_disconnect_ref;
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int cb_reconnect_ref;
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} client;
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};
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} lnet_userdata;
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#pragma mark - LWIP errors
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int lwip_lua_checkerr (lua_State *L, err_t err) {
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switch (err) {
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case ERR_OK: return 0;
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case ERR_MEM: return luaL_error(L, "out of memory");
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case ERR_BUF: return luaL_error(L, "buffer error");
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case ERR_TIMEOUT: return luaL_error(L, "timeout");
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case ERR_RTE: return luaL_error(L, "routing problem");
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case ERR_INPROGRESS: return luaL_error(L, "in progress");
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case ERR_VAL: return luaL_error(L, "illegal value");
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case ERR_WOULDBLOCK: return luaL_error(L, "would block");
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case ERR_ABRT: return luaL_error(L, "connection aborted");
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case ERR_RST: return luaL_error(L, "connection reset");
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case ERR_CLSD: return luaL_error(L, "connection closed");
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case ERR_CONN: return luaL_error(L, "not connected");
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case ERR_ARG: return luaL_error(L, "illegal argument");
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case ERR_USE: return luaL_error(L, "address in use");
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case ERR_IF: return luaL_error(L, "netif error");
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case ERR_ISCONN: return luaL_error(L, "already connected");
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default: return luaL_error(L, "unknown error");
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}
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}
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#pragma mark - Create
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lnet_userdata *net_create( lua_State *L, enum net_type type ) {
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const char *mt = NET_TABLES[type];
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lnet_userdata *ud = (lnet_userdata *)lua_newuserdata(L, sizeof(lnet_userdata));
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if (!ud) return NULL;
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luaL_getmetatable(L, mt);
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lua_setmetatable(L, -2);
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ud->type = type;
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ud->self_ref = LUA_NOREF;
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ud->pcb = NULL;
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switch (type) {
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case TYPE_TCP_CLIENT:
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ud->client.cb_connect_ref = LUA_NOREF;
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ud->client.cb_reconnect_ref = LUA_NOREF;
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ud->client.cb_disconnect_ref = LUA_NOREF;
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ud->client.hold = 0;
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case TYPE_UDP_SOCKET:
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ud->client.wait_dns = 0;
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ud->client.cb_dns_ref = LUA_NOREF;
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ud->client.cb_receive_ref = LUA_NOREF;
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ud->client.cb_sent_ref = LUA_NOREF;
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break;
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case TYPE_TCP_SERVER:
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ud->server.cb_accept_ref = LUA_NOREF;
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break;
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}
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return ud;
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}
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#pragma mark - LWIP callbacks
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static void net_err_cb(void *arg, err_t err) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || ud->type != TYPE_TCP_CLIENT || ud->self_ref == LUA_NOREF) return;
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ud->pcb = NULL; // Will be freed at LWIP level
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lua_State *L = lua_getstate();
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int ref;
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if (err != ERR_OK && ud->client.cb_reconnect_ref != LUA_NOREF)
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ref = ud->client.cb_reconnect_ref;
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else ref = ud->client.cb_disconnect_ref;
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if (ref != LUA_NOREF) {
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lua_rawgeti(L, LUA_REGISTRYINDEX, ref);
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
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lua_pushinteger(L, err);
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lua_call(L, 2, 0);
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}
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if (ud->client.wait_dns == 0) {
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lua_gc(L, LUA_GCSTOP, 0);
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luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
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ud->self_ref = LUA_NOREF;
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lua_gc(L, LUA_GCRESTART, 0);
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}
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}
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static err_t net_connected_cb(void *arg, struct tcp_pcb *tpcb, err_t err) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || ud->pcb != tpcb) return ERR_ABRT;
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if (err != ERR_OK) {
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net_err_cb(arg, err);
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return ERR_ABRT;
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}
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lua_State *L = lua_getstate();
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if (ud->self_ref != LUA_NOREF && ud->client.cb_connect_ref != LUA_NOREF) {
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->client.cb_connect_ref);
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
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lua_call(L, 1, 0);
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}
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return ERR_OK;
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}
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static void net_dns_cb(const char *name, ip_addr_t *ipaddr, void *arg) {
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ip_addr_t addr;
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if (ipaddr != NULL) addr = *ipaddr;
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else addr.addr = 0xFFFFFFFF;
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud) return;
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lua_State *L = lua_getstate();
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if (ud->self_ref != LUA_NOREF && ud->client.cb_dns_ref != LUA_NOREF) {
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->client.cb_dns_ref);
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
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if (addr.addr != 0xFFFFFFFF) {
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char iptmp[16];
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bzero(iptmp, 16);
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ets_sprintf(iptmp, IPSTR, IP2STR(&addr.addr));
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lua_pushstring(L, iptmp);
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} else {
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lua_pushnil(L);
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}
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lua_call(L, 2, 0);
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}
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ud->client.wait_dns --;
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if (ud->pcb && ud->type == TYPE_TCP_CLIENT && ud->tcp_pcb->state == CLOSED) {
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tcp_connect(ud->tcp_pcb, &addr, ud->tcp_pcb->remote_port, net_connected_cb);
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} else if (!ud->pcb && ud->client.wait_dns == 0) {
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lua_gc(L, LUA_GCSTOP, 0);
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luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
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ud->self_ref = LUA_NOREF;
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lua_gc(L, LUA_GCRESTART, 0);
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}
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}
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static void net_recv_cb(lnet_userdata *ud, struct pbuf *p, ip_addr_t *addr, u16_t port) {
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if (ud->client.cb_receive_ref == LUA_NOREF) {
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pbuf_free(p);
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return;
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}
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int num_args = 2;
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char iptmp[16] = { 0, };
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if (ud->type == TYPE_UDP_SOCKET)
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{
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num_args += 2;
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ets_sprintf(iptmp, IPSTR, IP2STR(&addr->addr));
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}
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lua_State *L = lua_getstate();
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struct pbuf *pp = p;
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while (pp)
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{
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->client.cb_receive_ref);
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
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lua_pushlstring(L, pp->payload, pp->len);
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if (ud->type == TYPE_UDP_SOCKET) {
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lua_pushinteger(L, port);
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lua_pushstring(L, iptmp);
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}
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lua_call(L, num_args, 0);
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pp = pp->next;
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}
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pbuf_free(p);
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}
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static void net_udp_recv_cb(void *arg, struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *addr, u16_t port) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || !ud->pcb || ud->type != TYPE_UDP_SOCKET || ud->self_ref == LUA_NOREF) {
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if (p) pbuf_free(p);
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return;
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}
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net_recv_cb(ud, p, addr, port);
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}
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static err_t net_tcp_recv_cb(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || !ud->pcb || ud->type != TYPE_TCP_CLIENT || ud->self_ref == LUA_NOREF)
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return ERR_ABRT;
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if (!p) {
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net_err_cb(arg, err);
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return tcp_close(tpcb);
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}
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net_recv_cb(ud, p, 0, 0);
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tcp_recved(tpcb, ud->client.hold ? 0 : TCP_WND);
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return ERR_OK;
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}
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static err_t net_sent_cb(void *arg, struct tcp_pcb *tpcb, u16_t len) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || !ud->pcb || ud->type != TYPE_TCP_CLIENT || ud->self_ref == LUA_NOREF) return ERR_ABRT;
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if (ud->client.cb_sent_ref == LUA_NOREF) return ERR_OK;
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lua_State *L = lua_getstate();
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->client.cb_sent_ref);
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
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lua_call(L, 1, 0);
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return ERR_OK;
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}
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static err_t net_accept_cb(void *arg, struct tcp_pcb *newpcb, err_t err) {
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lnet_userdata *ud = (lnet_userdata*)arg;
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if (!ud || ud->type != TYPE_TCP_SERVER || !ud->pcb) return ERR_ABRT;
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if (ud->self_ref == LUA_NOREF || ud->server.cb_accept_ref == LUA_NOREF) return ERR_ABRT;
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lua_State *L = lua_getstate();
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lua_rawgeti(L, LUA_REGISTRYINDEX, ud->server.cb_accept_ref);
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lnet_userdata *nud = net_create(L, TYPE_TCP_CLIENT);
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lua_pushvalue(L, 2);
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nud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
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nud->tcp_pcb = newpcb;
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tcp_arg(nud->tcp_pcb, nud);
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tcp_err(nud->tcp_pcb, net_err_cb);
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tcp_recv(nud->tcp_pcb, net_tcp_recv_cb);
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tcp_sent(nud->tcp_pcb, net_sent_cb);
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nud->tcp_pcb->so_options |= SOF_KEEPALIVE;
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nud->tcp_pcb->keep_idle = ud->server.timeout * 1000;
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nud->tcp_pcb->keep_cnt = 1;
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tcp_accepted(ud->tcp_pcb);
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lua_call(L, 1, 0);
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return net_connected_cb(nud, nud->tcp_pcb, ERR_OK);
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}
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#pragma mark - Lua API - create
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#ifdef TLS_MODULE_PRESENT
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extern int tls_socket_create( lua_State *L );
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#endif
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// Lua: net.createUDPSocket()
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int net_createUDPSocket( lua_State *L ) {
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net_create(L, TYPE_UDP_SOCKET);
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return 1;
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}
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// Lua: net.createServer(type, timeout)
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int net_createServer( lua_State *L ) {
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int type, timeout;
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type = luaL_optlong(L, 1, TYPE_TCP);
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timeout = luaL_optlong(L, 2, 30);
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if (type == TYPE_UDP) {
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platform_print_deprecation_note("net.createServer with net.UDP type", "in next version");
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return net_createUDPSocket( L );
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}
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if (type != TYPE_TCP) return luaL_error(L, "invalid type");
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lnet_userdata *u = net_create(L, TYPE_TCP_SERVER);
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u->server.timeout = timeout;
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return 1;
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}
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// Lua: net.createConnection(type, secure)
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int net_createConnection( lua_State *L ) {
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int type, secure;
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type = luaL_optlong(L, 1, TYPE_TCP);
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secure = luaL_optlong(L, 2, 0);
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if (type == TYPE_UDP) {
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platform_print_deprecation_note("net.createConnection with net.UDP type", "in next version");
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return net_createUDPSocket( L );
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}
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if (type != TYPE_TCP) return luaL_error(L, "invalid type");
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if (secure) {
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platform_print_deprecation_note("net.createConnection with secure flag", "in next version");
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#ifdef TLS_MODULE_PRESENT
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return tls_socket_create( L );
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#else
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return luaL_error(L, "secure connections not enabled");
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#endif
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}
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net_create(L, TYPE_TCP_CLIENT);
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return 1;
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}
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#pragma mark - Get & check userdata
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lnet_userdata *net_get_udata_s( lua_State *L, int stack ) {
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if (!lua_isuserdata(L, stack)) return NULL;
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lnet_userdata *ud = (lnet_userdata *)lua_touserdata(L, stack);
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switch (ud->type) {
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case TYPE_TCP_CLIENT:
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case TYPE_TCP_SERVER:
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case TYPE_UDP_SOCKET:
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break;
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default: return NULL;
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}
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const char *mt = NET_TABLES[ud->type];
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ud = luaL_checkudata(L, stack, mt);
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return ud;
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}
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#define net_get_udata(L) net_get_udata_s(L, 1)
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#pragma mark - Lua API
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// Lua: server:listen(port, addr, function(c)), socket:listen(port, addr)
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int net_listen( lua_State *L ) {
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lnet_userdata *ud = net_get_udata(L);
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if (!ud || ud->type == TYPE_TCP_CLIENT)
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return luaL_error(L, "invalid user data");
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if (ud->pcb)
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return luaL_error(L, "already listening");
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int stack = 2;
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uint16_t port = 0;
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const char *domain = "0.0.0.0";
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if (lua_isnumber(L, stack))
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port = lua_tointeger(L, stack++);
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if (lua_isstring(L, stack)) {
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size_t dl = 0;
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domain = luaL_checklstring(L, stack++, &dl);
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}
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ip_addr_t addr;
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if (!ipaddr_aton(domain, &addr))
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return luaL_error(L, "invalid IP address");
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if (ud->type == TYPE_TCP_SERVER) {
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if (lua_isfunction(L, stack) || lua_islightfunction(L, stack)) {
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lua_pushvalue(L, stack++);
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luaL_unref(L, LUA_REGISTRYINDEX, ud->server.cb_accept_ref);
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ud->server.cb_accept_ref = luaL_ref(L, LUA_REGISTRYINDEX);
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} else {
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return luaL_error(L, "need callback");
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}
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}
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err_t err = ERR_OK;
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switch (ud->type) {
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case TYPE_TCP_SERVER:
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ud->tcp_pcb = tcp_new();
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if (!ud->tcp_pcb)
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return luaL_error(L, "cannot allocate PCB");
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ud->tcp_pcb->so_options |= SOF_REUSEADDR;
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err = tcp_bind(ud->tcp_pcb, &addr, port);
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if (err == ERR_OK) {
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tcp_arg(ud->tcp_pcb, ud);
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struct tcp_pcb *pcb = tcp_listen(ud->tcp_pcb);
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if (!pcb) {
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err = ERR_MEM;
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} else {
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ud->tcp_pcb = pcb;
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tcp_accept(ud->tcp_pcb, net_accept_cb);
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}
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}
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break;
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case TYPE_UDP_SOCKET:
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ud->udp_pcb = udp_new();
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if (!ud->udp_pcb)
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return luaL_error(L, "cannot allocate PCB");
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udp_recv(ud->udp_pcb, net_udp_recv_cb, ud);
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err = udp_bind(ud->udp_pcb, &addr, port);
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break;
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}
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if (err != ERR_OK) {
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switch (ud->type) {
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case TYPE_TCP_SERVER:
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tcp_close(ud->tcp_pcb);
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ud->tcp_pcb = NULL;
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break;
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case TYPE_UDP_SOCKET:
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udp_remove(ud->udp_pcb);
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ud->udp_pcb = NULL;
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break;
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}
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return lwip_lua_checkerr(L, err);
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}
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if (ud->self_ref == LUA_NOREF) {
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lua_pushvalue(L, 1);
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ud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
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}
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return 0;
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}
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// Lua: client:connect(port, addr)
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int net_connect( lua_State *L ) {
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lnet_userdata *ud = net_get_udata(L);
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if (!ud || ud->type != TYPE_TCP_CLIENT)
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return luaL_error(L, "invalid user data");
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if (ud->pcb)
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return luaL_error(L, "already connected");
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uint16_t port = luaL_checkinteger(L, 2);
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|
if (port == 0)
|
|
return luaL_error(L, "specify port");
|
|
const char *domain = "127.0.0.1";
|
|
if (lua_isstring(L, 3)) {
|
|
size_t dl = 0;
|
|
domain = luaL_checklstring(L, 3, &dl);
|
|
}
|
|
if (lua_gettop(L) > 3) {
|
|
luaL_argcheck(L, lua_isfunction(L, 4) || lua_islightfunction(L, 4), 4, "not a function");
|
|
lua_pushvalue(L, 4);
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_connect_ref);
|
|
ud->client.cb_connect_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
ud->tcp_pcb = tcp_new();
|
|
if (!ud->tcp_pcb)
|
|
return luaL_error(L, "cannot allocate PCB");
|
|
tcp_arg(ud->tcp_pcb, ud);
|
|
tcp_err(ud->tcp_pcb, net_err_cb);
|
|
tcp_recv(ud->tcp_pcb, net_tcp_recv_cb);
|
|
tcp_sent(ud->tcp_pcb, net_sent_cb);
|
|
ud->tcp_pcb->remote_port = port;
|
|
ip_addr_t addr;
|
|
ud->client.wait_dns ++;
|
|
int unref = 0;
|
|
if (ud->self_ref == LUA_NOREF) {
|
|
unref = 1;
|
|
lua_pushvalue(L, 1);
|
|
ud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
err_t err = dns_gethostbyname(domain, &addr, net_dns_cb, ud);
|
|
if (err == ERR_OK) {
|
|
net_dns_cb(domain, &addr, ud);
|
|
} else if (err != ERR_INPROGRESS) {
|
|
ud->client.wait_dns --;
|
|
if (unref) {
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
|
|
ud->self_ref = LUA_NOREF;
|
|
}
|
|
tcp_abort(ud->tcp_pcb);
|
|
ud->tcp_pcb = NULL;
|
|
return lwip_lua_checkerr(L, err);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: client/socket:on(name, callback)
|
|
int net_on( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type == TYPE_TCP_SERVER)
|
|
return luaL_error(L, "invalid user data");
|
|
int *refptr = NULL;
|
|
const char *name = luaL_checkstring(L, 2);
|
|
if (!name) return luaL_error(L, "need callback name");
|
|
switch (ud->type) {
|
|
case TYPE_TCP_CLIENT:
|
|
if (strcmp("connection",name)==0)
|
|
{ refptr = &ud->client.cb_connect_ref; break; }
|
|
if (strcmp("disconnection",name)==0)
|
|
{ refptr = &ud->client.cb_disconnect_ref; break; }
|
|
if (strcmp("reconnection",name)==0)
|
|
{ refptr = &ud->client.cb_reconnect_ref; break; }
|
|
case TYPE_UDP_SOCKET:
|
|
if (strcmp("dns",name)==0)
|
|
{ refptr = &ud->client.cb_dns_ref; break; }
|
|
if (strcmp("receive",name)==0)
|
|
{ refptr = &ud->client.cb_receive_ref; break; }
|
|
if (strcmp("sent",name)==0)
|
|
{ refptr = &ud->client.cb_sent_ref; break; }
|
|
break;
|
|
default: return luaL_error(L, "invalid user data");
|
|
}
|
|
if (refptr == NULL)
|
|
return luaL_error(L, "invalid callback name");
|
|
if (lua_isfunction(L, 3) || lua_islightfunction(L, 3)) {
|
|
lua_pushvalue(L, 3);
|
|
luaL_unref(L, LUA_REGISTRYINDEX, *refptr);
|
|
*refptr = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
} else if (lua_isnil(L, 3)) {
|
|
luaL_unref(L, LUA_REGISTRYINDEX, *refptr);
|
|
*refptr = LUA_NOREF;
|
|
} else {
|
|
return luaL_error(L, "invalid callback function");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: client:send(data, function(c)), socket:send(port, ip, data, function(s))
|
|
int net_send( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type == TYPE_TCP_SERVER)
|
|
return luaL_error(L, "invalid user data");
|
|
ip_addr_t addr;
|
|
uint16_t port;
|
|
const char *data;
|
|
size_t datalen = 0;
|
|
int stack = 2;
|
|
if (ud->type == TYPE_UDP_SOCKET) {
|
|
size_t dl = 0;
|
|
port = luaL_checkinteger(L, stack++);
|
|
if (port == 0) return luaL_error(L, "need port");
|
|
const char *domain = luaL_checklstring(L, stack++, &dl);
|
|
if (!domain) return luaL_error(L, "need IP address");
|
|
if (!ipaddr_aton(domain, &addr)) return luaL_error(L, "invalid IP address");
|
|
}
|
|
data = luaL_checklstring(L, stack++, &datalen);
|
|
if (!data || datalen == 0) return luaL_error(L, "no data to send");
|
|
if (lua_isfunction(L, stack) || lua_islightfunction(L, stack)) {
|
|
lua_pushvalue(L, stack++);
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_sent_ref);
|
|
ud->client.cb_sent_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
if (ud->type == TYPE_UDP_SOCKET && !ud->pcb) {
|
|
ud->udp_pcb = udp_new();
|
|
if (!ud->udp_pcb)
|
|
return luaL_error(L, "cannot allocate PCB");
|
|
udp_recv(ud->udp_pcb, net_udp_recv_cb, ud);
|
|
ip_addr_t laddr = {0};
|
|
err_t err = udp_bind(ud->udp_pcb, &laddr, 0);
|
|
if (err != ERR_OK) {
|
|
udp_remove(ud->udp_pcb);
|
|
ud->udp_pcb = NULL;
|
|
return lwip_lua_checkerr(L, err);
|
|
}
|
|
if (ud->self_ref == LUA_NOREF) {
|
|
lua_pushvalue(L, 1);
|
|
ud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
}
|
|
if (!ud->pcb || ud->self_ref == LUA_NOREF)
|
|
return luaL_error(L, "not connected");
|
|
err_t err;
|
|
if (ud->type == TYPE_UDP_SOCKET) {
|
|
struct pbuf *pb = pbuf_alloc(PBUF_TRANSPORT, datalen, PBUF_RAM);
|
|
if (!pb)
|
|
return luaL_error(L, "cannot allocate message buffer");
|
|
pbuf_take(pb, data, datalen);
|
|
err = udp_sendto(ud->udp_pcb, pb, &addr, port);
|
|
pbuf_free(pb);
|
|
if (ud->client.cb_sent_ref != LUA_NOREF) {
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, ud->client.cb_sent_ref);
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, ud->self_ref);
|
|
lua_call(L, 1, 0);
|
|
}
|
|
} else if (ud->type == TYPE_TCP_CLIENT) {
|
|
err = tcp_write(ud->tcp_pcb, data, datalen, TCP_WRITE_FLAG_COPY);
|
|
}
|
|
return lwip_lua_checkerr(L, err);
|
|
}
|
|
|
|
// Lua: client:hold()
|
|
int net_hold( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type != TYPE_TCP_CLIENT)
|
|
return luaL_error(L, "invalid user data");
|
|
if (!ud->client.hold && ud->tcp_pcb) {
|
|
ud->client.hold = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: client:unhold()
|
|
int net_unhold( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type != TYPE_TCP_CLIENT)
|
|
return luaL_error(L, "invalid user data");
|
|
if (ud->client.hold && ud->tcp_pcb) {
|
|
ud->client.hold = 0;
|
|
ud->tcp_pcb->flags |= TF_ACK_NOW;
|
|
tcp_recved(ud->tcp_pcb, TCP_WND);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: client/socket:dns(domain, callback(socket, addr))
|
|
int net_dns( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type == TYPE_TCP_SERVER)
|
|
return luaL_error(L, "invalid user data");
|
|
size_t dl = 0;
|
|
const char *domain = luaL_checklstring(L, 2, &dl);
|
|
if (!domain)
|
|
return luaL_error(L, "no domain specified");
|
|
if (lua_isfunction(L, 3) || lua_islightfunction(L, 3)) {
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_dns_ref);
|
|
lua_pushvalue(L, 3);
|
|
ud->client.cb_dns_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
if (ud->client.cb_dns_ref == LUA_NOREF)
|
|
return luaL_error(L, "no callback specified");
|
|
ud->client.wait_dns ++;
|
|
int unref = 0;
|
|
if (ud->self_ref == LUA_NOREF) {
|
|
unref = 1;
|
|
lua_pushvalue(L, 1);
|
|
ud->self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
}
|
|
ip_addr_t addr;
|
|
err_t err = dns_gethostbyname(domain, &addr, net_dns_cb, ud);
|
|
if (err == ERR_OK) {
|
|
net_dns_cb(domain, &addr, ud);
|
|
} else if (err != ERR_INPROGRESS) {
|
|
ud->client.wait_dns --;
|
|
if (unref) {
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
|
|
ud->self_ref = LUA_NOREF;
|
|
}
|
|
return lwip_lua_checkerr(L, err);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: client/socket:ttl([ttl])
|
|
int net_ttl( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type == TYPE_TCP_SERVER)
|
|
return luaL_error(L, "invalid user data");
|
|
if (!ud->pcb)
|
|
return luaL_error(L, "socket is not open/bound yet");
|
|
int ttl = luaL_optinteger(L, 2, -1);
|
|
// Since `ttl` field is part of IP_PCB macro
|
|
// (which are at beginning of both udp_pcb/tcp_pcb)
|
|
// and PCBs declared as `union` there is safe to
|
|
// access ttl field without checking for type.
|
|
if (ttl == -1) {
|
|
ttl = ud->udp_pcb->ttl;
|
|
} else {
|
|
ud->udp_pcb->ttl = ttl;
|
|
}
|
|
lua_pushinteger(L, ttl);
|
|
return 1;
|
|
}
|
|
|
|
// Lua: client:getpeer()
|
|
int net_getpeer( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud || ud->type != TYPE_TCP_CLIENT)
|
|
return luaL_error(L, "invalid user data");
|
|
if (!ud->pcb) {
|
|
lua_pushnil(L);
|
|
lua_pushnil(L);
|
|
return 2;
|
|
}
|
|
uint16_t port = ud->tcp_pcb->remote_port;
|
|
ip_addr_t addr = ud->tcp_pcb->remote_ip;
|
|
if (port == 0) {
|
|
lua_pushnil(L);
|
|
lua_pushnil(L);
|
|
return 2;
|
|
}
|
|
char addr_str[16];
|
|
bzero(addr_str, 16);
|
|
ets_sprintf(addr_str, IPSTR, IP2STR(&addr.addr));
|
|
lua_pushinteger(L, port);
|
|
lua_pushstring(L, addr_str);
|
|
return 2;
|
|
}
|
|
|
|
// Lua: client/server/socket:getaddr()
|
|
int net_getaddr( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud) return luaL_error(L, "invalid user data");
|
|
if (!ud->pcb) {
|
|
lua_pushnil(L);
|
|
lua_pushnil(L);
|
|
return 2;
|
|
}
|
|
uint16_t port;
|
|
ip_addr_t addr;
|
|
switch (ud->type) {
|
|
case TYPE_TCP_CLIENT:
|
|
case TYPE_TCP_SERVER:
|
|
addr = ud->tcp_pcb->local_ip;
|
|
port = ud->tcp_pcb->local_port;
|
|
break;
|
|
case TYPE_UDP_SOCKET:
|
|
addr = ud->udp_pcb->local_ip;
|
|
port = ud->udp_pcb->local_port;
|
|
break;
|
|
}
|
|
if (port == 0) {
|
|
lua_pushnil(L);
|
|
lua_pushnil(L);
|
|
return 2;
|
|
}
|
|
char addr_str[16];
|
|
bzero(addr_str, 16);
|
|
ets_sprintf(addr_str, IPSTR, IP2STR(&addr.addr));
|
|
lua_pushinteger(L, port);
|
|
lua_pushstring(L, addr_str);
|
|
return 2;
|
|
}
|
|
|
|
// Lua: client/server/socket:close()
|
|
int net_close( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud) return luaL_error(L, "invalid user data");
|
|
if (ud->pcb) {
|
|
switch (ud->type) {
|
|
case TYPE_TCP_CLIENT:
|
|
if (ERR_OK != tcp_close(ud->tcp_pcb)) {
|
|
tcp_arg(ud->tcp_pcb, NULL);
|
|
tcp_abort(ud->tcp_pcb);
|
|
}
|
|
ud->tcp_pcb = NULL;
|
|
break;
|
|
case TYPE_TCP_SERVER:
|
|
tcp_close(ud->tcp_pcb);
|
|
ud->tcp_pcb = NULL;
|
|
break;
|
|
case TYPE_UDP_SOCKET:
|
|
udp_remove(ud->udp_pcb);
|
|
ud->udp_pcb = NULL;
|
|
break;
|
|
}
|
|
} else {
|
|
return luaL_error(L, "not connected");
|
|
}
|
|
if (ud->type == TYPE_TCP_SERVER ||
|
|
(ud->pcb == NULL && ud->client.wait_dns == 0)) {
|
|
lua_gc(L, LUA_GCSTOP, 0);
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
|
|
ud->self_ref = LUA_NOREF;
|
|
lua_gc(L, LUA_GCRESTART, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int net_delete( lua_State *L ) {
|
|
lnet_userdata *ud = net_get_udata(L);
|
|
if (!ud) return luaL_error(L, "no user data");
|
|
if (ud->pcb) {
|
|
switch (ud->type) {
|
|
case TYPE_TCP_CLIENT:
|
|
tcp_arg(ud->tcp_pcb, NULL);
|
|
tcp_abort(ud->tcp_pcb);
|
|
ud->tcp_pcb = NULL;
|
|
break;
|
|
case TYPE_TCP_SERVER:
|
|
tcp_close(ud->tcp_pcb);
|
|
ud->tcp_pcb = NULL;
|
|
break;
|
|
case TYPE_UDP_SOCKET:
|
|
udp_remove(ud->udp_pcb);
|
|
ud->udp_pcb = NULL;
|
|
break;
|
|
}
|
|
}
|
|
switch (ud->type) {
|
|
case TYPE_TCP_CLIENT:
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_connect_ref);
|
|
ud->client.cb_connect_ref = LUA_NOREF;
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_disconnect_ref);
|
|
ud->client.cb_disconnect_ref = LUA_NOREF;
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_reconnect_ref);
|
|
ud->client.cb_reconnect_ref = LUA_NOREF;
|
|
case TYPE_UDP_SOCKET:
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_dns_ref);
|
|
ud->client.cb_dns_ref = LUA_NOREF;
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_receive_ref);
|
|
ud->client.cb_receive_ref = LUA_NOREF;
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->client.cb_sent_ref);
|
|
ud->client.cb_sent_ref = LUA_NOREF;
|
|
break;
|
|
case TYPE_TCP_SERVER:
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->server.cb_accept_ref);
|
|
ud->server.cb_accept_ref = LUA_NOREF;
|
|
break;
|
|
}
|
|
lua_gc(L, LUA_GCSTOP, 0);
|
|
luaL_unref(L, LUA_REGISTRYINDEX, ud->self_ref);
|
|
ud->self_ref = LUA_NOREF;
|
|
lua_gc(L, LUA_GCRESTART, 0);
|
|
return 0;
|
|
}
|
|
|
|
#pragma mark - Multicast
|
|
|
|
static int net_multicastJoinLeave( lua_State *L, int join) {
|
|
size_t il;
|
|
ip_addr_t multicast_addr;
|
|
ip_addr_t if_addr;
|
|
const char *multicast_ip;
|
|
const char *if_ip;
|
|
|
|
NODE_DBG("net_multicastJoin is called.\n");
|
|
if(! lua_isstring(L,1) ) return luaL_error( L, "wrong arg type" );
|
|
if_ip = luaL_checklstring( L, 1, &il );
|
|
if (if_ip != NULL)
|
|
if ( if_ip[0] == '\0' || stricmp(if_ip,"any") == 0)
|
|
{
|
|
if_ip = "0.0.0.0";
|
|
il = 7;
|
|
}
|
|
if (if_ip == NULL || il > 15 || il < 7) return luaL_error( L, "invalid if ip" );
|
|
if_addr.addr = ipaddr_addr(if_ip);
|
|
|
|
if(! lua_isstring(L,2) ) return luaL_error( L, "wrong arg type" );
|
|
multicast_ip = luaL_checklstring( L, 2, &il );
|
|
if (multicast_ip == NULL || il > 15 || il < 7) return luaL_error( L, "invalid multicast ip" );
|
|
multicast_addr.addr = ipaddr_addr(multicast_ip);
|
|
if (join)
|
|
{
|
|
igmp_joingroup(&if_addr, &multicast_addr);
|
|
}
|
|
else
|
|
{
|
|
igmp_leavegroup(&if_addr, &multicast_addr);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: net.multicastJoin(ifip, multicastip)
|
|
// if ifip "" or "any" all interfaces are affected
|
|
static int net_multicastJoin( lua_State* L ) {
|
|
return net_multicastJoinLeave(L,1);
|
|
}
|
|
|
|
// Lua: net.multicastLeave(ifip, multicastip)
|
|
// if ifip "" or "any" all interfaces are affected
|
|
static int net_multicastLeave( lua_State* L ) {
|
|
return net_multicastJoinLeave(L,0);
|
|
}
|
|
|
|
#pragma mark - DNS
|
|
|
|
static void net_dns_static_cb(const char *name, ip_addr_t *ipaddr, void *callback_arg) {
|
|
ip_addr_t addr;
|
|
if (ipaddr != NULL)
|
|
addr = *ipaddr;
|
|
else addr.addr = 0xFFFFFFFF;
|
|
int cb_ref = ((int*)callback_arg)[0];
|
|
free(callback_arg);
|
|
lua_State *L = lua_getstate();
|
|
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, cb_ref);
|
|
lua_pushnil(L);
|
|
if (addr.addr != 0xFFFFFFFF) {
|
|
char iptmp[20];
|
|
size_t ipl = sprintf(iptmp, IPSTR, IP2STR(&addr.addr));
|
|
lua_pushlstring(L, iptmp, ipl);
|
|
} else {
|
|
lua_pushnil(L);
|
|
}
|
|
lua_call(L, 2, 0);
|
|
|
|
luaL_unref(L, LUA_REGISTRYINDEX, cb_ref);
|
|
}
|
|
|
|
// Lua: net.dns.resolve( domain, function(sk, ip) )
|
|
static int net_dns_static( lua_State* L ) {
|
|
size_t dl;
|
|
const char* domain = luaL_checklstring(L, 1, &dl);
|
|
if (!domain && dl > 128) {
|
|
return luaL_error(L, "wrong domain");
|
|
}
|
|
|
|
luaL_checkanyfunction(L, 2);
|
|
lua_pushvalue(L, 2); // copy argument (func) to the top of stack
|
|
int cbref = luaL_ref(L, LUA_REGISTRYINDEX);
|
|
if (cbref == LUA_NOREF) {
|
|
return luaL_error(L, "wrong callback");
|
|
}
|
|
int *cbref_ptr = calloc(1, sizeof(int));
|
|
cbref_ptr[0] = cbref;
|
|
ip_addr_t addr;
|
|
err_t err = dns_gethostbyname(domain, &addr, net_dns_static_cb, cbref_ptr);
|
|
if (err == ERR_OK) {
|
|
net_dns_static_cb(domain, &addr, cbref_ptr);
|
|
return 0;
|
|
} else if (err == ERR_INPROGRESS) {
|
|
return 0;
|
|
} else {
|
|
int e = lwip_lua_checkerr(L, err);
|
|
free(cbref_ptr);
|
|
return e;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Lua: s = net.dns.setdnsserver(ip_addr, [index])
|
|
static int net_setdnsserver( lua_State* L ) {
|
|
size_t l;
|
|
u32_t ip32;
|
|
|
|
const char *server = luaL_checklstring( L, 1, &l );
|
|
if (l>16 || server == NULL || (ip32 = ipaddr_addr(server)) == IPADDR_NONE || ip32 == IPADDR_ANY)
|
|
return luaL_error( L, "invalid dns server ip" );
|
|
|
|
int numdns = luaL_optint(L, 2, 0);
|
|
if (numdns >= DNS_MAX_SERVERS)
|
|
return luaL_error( L, "server index out of range [0-%d]", DNS_MAX_SERVERS - 1);
|
|
|
|
ip_addr_t ipaddr;
|
|
ip4_addr_set_u32(&ipaddr, ip32);
|
|
dns_setserver(numdns,&ipaddr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Lua: s = net.dns.getdnsserver([index])
|
|
static int net_getdnsserver( lua_State* L ) {
|
|
int numdns = luaL_optint(L, 1, 0);
|
|
if (numdns >= DNS_MAX_SERVERS)
|
|
return luaL_error( L, "server index out of range [0-%d]", DNS_MAX_SERVERS - 1);
|
|
|
|
// ip_addr_t ipaddr;
|
|
// dns_getserver(numdns,&ipaddr);
|
|
// Bug fix by @md5crypt https://github.com/nodemcu/nodemcu-firmware/pull/500
|
|
ip_addr_t ipaddr = dns_getserver(numdns);
|
|
|
|
if ( ip_addr_isany(&ipaddr) ) {
|
|
lua_pushnil( L );
|
|
} else {
|
|
char temp[20] = {0};
|
|
sprintf(temp, IPSTR, IP2STR( &ipaddr.addr ) );
|
|
lua_pushstring( L, temp );
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#pragma mark - Tables
|
|
|
|
#ifdef TLS_MODULE_PRESENT
|
|
LROT_EXTERN(tls_cert);
|
|
#endif
|
|
|
|
// Module function map
|
|
LROT_BEGIN(net_tcpserver)
|
|
LROT_FUNCENTRY( listen, net_listen )
|
|
LROT_FUNCENTRY( getaddr, net_getaddr )
|
|
LROT_FUNCENTRY( close, net_close )
|
|
LROT_FUNCENTRY( __gc, net_delete )
|
|
LROT_TABENTRY( __index, net_tcpserver )
|
|
LROT_END( net_tcpserver, net_tcpserver, 0 )
|
|
|
|
|
|
LROT_BEGIN(net_tcpsocket)
|
|
LROT_FUNCENTRY( connect, net_connect )
|
|
LROT_FUNCENTRY( close, net_close )
|
|
LROT_FUNCENTRY( on, net_on )
|
|
LROT_FUNCENTRY( send, net_send )
|
|
LROT_FUNCENTRY( hold, net_hold )
|
|
LROT_FUNCENTRY( unhold, net_unhold )
|
|
LROT_FUNCENTRY( dns, net_dns )
|
|
LROT_FUNCENTRY( ttl, net_ttl )
|
|
LROT_FUNCENTRY( getpeer, net_getpeer )
|
|
LROT_FUNCENTRY( getaddr, net_getaddr )
|
|
LROT_FUNCENTRY( __gc, net_delete )
|
|
LROT_TABENTRY( __index, net_tcpsocket )
|
|
LROT_END( net_tcpsocket, net_tcpsocket, 0 )
|
|
|
|
|
|
LROT_BEGIN(net_udpsocket)
|
|
LROT_FUNCENTRY( listen, net_listen )
|
|
LROT_FUNCENTRY( close, net_close )
|
|
LROT_FUNCENTRY( on, net_on )
|
|
LROT_FUNCENTRY( send, net_send )
|
|
LROT_FUNCENTRY( dns, net_dns )
|
|
LROT_FUNCENTRY( ttl, net_ttl )
|
|
LROT_FUNCENTRY( getaddr, net_getaddr )
|
|
LROT_FUNCENTRY( __gc, net_delete )
|
|
LROT_TABENTRY( __index, net_udpsocket )
|
|
LROT_END( net_udpsocket, net_udpsocket, 0 )
|
|
|
|
|
|
LROT_BEGIN(net_dns)
|
|
LROT_FUNCENTRY( setdnsserver, net_setdnsserver )
|
|
LROT_FUNCENTRY( getdnsserver, net_getdnsserver )
|
|
LROT_FUNCENTRY( resolve, net_dns_static )
|
|
LROT_END( net_dns, net_dns, 0 )
|
|
|
|
|
|
LROT_BEGIN(net)
|
|
LROT_FUNCENTRY( createServer, net_createServer )
|
|
LROT_FUNCENTRY( createConnection, net_createConnection )
|
|
LROT_FUNCENTRY( createUDPSocket, net_createUDPSocket )
|
|
LROT_FUNCENTRY( multicastJoin, net_multicastJoin )
|
|
LROT_FUNCENTRY( multicastLeave, net_multicastLeave )
|
|
LROT_TABENTRY( dns, net_dns )
|
|
#ifdef TLS_MODULE_PRESENT
|
|
LROT_TABENTRY( cert, tls_cert )
|
|
#endif
|
|
LROT_NUMENTRY( TCP, TYPE_TCP )
|
|
LROT_NUMENTRY( UDP, TYPE_UDP )
|
|
LROT_TABENTRY( __metatable, net )
|
|
LROT_END( net, net, 0 )
|
|
|
|
|
|
int luaopen_net( lua_State *L ) {
|
|
igmp_init();
|
|
|
|
luaL_rometatable(L, NET_TABLE_TCP_SERVER, LROT_TABLEREF(net_tcpserver));
|
|
luaL_rometatable(L, NET_TABLE_TCP_CLIENT, LROT_TABLEREF(net_tcpsocket));
|
|
luaL_rometatable(L, NET_TABLE_UDP_SOCKET, LROT_TABLEREF(net_udpsocket));
|
|
|
|
return 0;
|
|
}
|
|
|
|
NODEMCU_MODULE(NET, "net", net, luaopen_net);
|