moonbridge: moonbridge

moonbridge

annotate moonbridge_io.c @ 313:334ea1f13b0b

Modified non-blocking I/O _call functions to pass certain arguments (socket, mode, module) to wait function

author	jbe
date	Thu Feb 01 19:13:25 2018 +0100 (2018-02-01)
parents	930a43a0099a
children	1b459e9c12c9

rev	line source
jbe@209	1
jbe@209	2 #ifndef __has_include
jbe@209	3 #define __has_include(x) 0
jbe@209	4 #endif
jbe@79	5
jbe@79	6 #include <stdlib.h>
jbe@135	7 #include <stdint.h>
jbe@135	8 #include <string.h>
jbe@135	9 #include <errno.h>
jbe@79	10 #include <unistd.h>
jbe@135	11 #include <signal.h>
jbe@135	12 #include <fcntl.h>
jbe@135	13 #include <sys/stat.h>
jbe@79	14 #include <sys/socket.h>
jbe@111	15 #include <sys/un.h>
jbe@95	16 #include <netinet/in.h>
jbe@95	17 #include <netinet/tcp.h>
jbe@135	18 #include <sys/select.h>
jbe@136	19 #include <time.h>
jbe@135	20 #include <netdb.h>
jbe@107	21 #include <arpa/inet.h>
jbe@205	22 #include <sys/types.h>
jbe@205	23 #include <sys/wait.h>
jbe@209	24 #if defined(__linux__) \|\| __has_include(<bsd/unistd.h>)
jbe@209	25 #include <bsd/unistd.h>
jbe@209	26 #endif
jbe@211	27
jbe@243	28 #ifdef MOONBR_IO_USE_TLS
jbe@243	29 #include <tls.h>
jbe@243	30 #endif
jbe@243	31
jbe@79	32 #include <lua.h>
jbe@79	33 #include <lauxlib.h>
jbe@79	34 #include <lualib.h>
jbe@79	35
jbe@149	36 #include <assert.h>
jbe@149	37
jbe@80	38 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85	39 #define MOONBR_IO_READBUFLEN 4096
jbe@80	40 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80	41
jbe@108	42 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108	43
jbe@213	44 #define MOONBR_IO_STRERROR_R_MSG "Error detail unavailable due to noncompliant strerror_r() implementation"
jbe@257	45 #define moonbr_io_prepare_errmsg() \
jbe@213	46 char errmsg[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG; \
jbe@80	47 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@257	48 #define moonbr_io_return_prepared_errmsg() \
jbe@257	49 lua_pushnil(L); \
jbe@257	50 lua_pushstring(L, errmsg); \
jbe@257	51 return 2
jbe@257	52 #define moonbr_io_return_errmsg() \
jbe@257	53 do { \
jbe@257	54 moonbr_io_prepare_errmsg(); \
jbe@257	55 moonbr_io_return_prepared_errmsg(); \
jbe@257	56 } while (0)
jbe@80	57
jbe@313	58 #define MOONBR_IO_MODULE_REGKEY "moonbridge_io_module"
jbe@79	59 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79	60 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108	61 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205	62 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205	63 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@79	64
jbe@243	65 #ifdef MOONBR_IO_USE_TLS
jbe@258	66
jbe@243	67 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252	68
jbe@252	69 typedef struct {
jbe@252	70 struct tls_config *config;
jbe@252	71 int server;
jbe@252	72 } moonbr_io_tlsconf_t;
jbe@258	73
jbe@258	74 #endif /* MOONBR_IO_USE_TLS */
jbe@243	75
jbe@79	76 typedef struct {
jbe@79	77 int fd;
jbe@107	78 int issock;
jbe@107	79 sa_family_t addrfam;
jbe@94	80 int finished;
jbe@94	81 int closed;
jbe@81	82 int nonblocking;
jbe@95	83 int nopush;
jbe@85	84 int readerr;
jbe@105	85 int readbufin;
jbe@105	86 int readbufout;
jbe@81	87 int writeerr;
jbe@83	88 size_t writeleft;
jbe@132	89 size_t flushedleft;
jbe@83	90 #if LUA_VERSION_NUM >= 503
jbe@83	91 lua_Integer writeqin;
jbe@83	92 lua_Integer writeqout;
jbe@83	93 #else
jbe@83	94 int writeqin;
jbe@83	95 int writeqout;
jbe@83	96 #endif
jbe@83	97 size_t writeqoff;
jbe@103	98 int writebufin;
jbe@103	99 int writebufout;
jbe@85	100 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80	101 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246	102 #ifdef MOONBR_IO_USE_TLS
jbe@250	103 struct tls *tls;
jbe@250	104 struct tls *servertls;
jbe@250	105 int tlshandshake;
jbe@261	106 int tlsclosing;
jbe@246	107 #endif
jbe@79	108 } moonbr_io_handle_t;
jbe@79	109
jbe@108	110 typedef struct {
jbe@108	111 int fd;
jbe@118	112 sa_family_t addrfam;
jbe@108	113 int nonblocking;
jbe@108	114 } moonbr_io_listener_t;
jbe@108	115
jbe@205	116 typedef struct {
jbe@205	117 pid_t pid;
jbe@303	118 int status;
jbe@303	119 int status_valid;
jbe@205	120 } moonbr_io_child_t;
jbe@205	121
jbe@293	122 volatile sig_atomic_t moonbr_io_sigterm_flag = 0;
jbe@297	123 volatile sig_atomic_t moonbr_io_sigchld_flag = 0;
jbe@284	124
jbe@148	125 static int moonbr_io_yield(lua_State *L) {
jbe@149	126 return lua_yield(L, lua_gettop(L));
jbe@140	127 }
jbe@140	128
jbe@140	129 #if LUA_VERSION_NUM >= 503
jbe@140	130 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140	131 #else
jbe@140	132 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140	133 #endif
jbe@140	134 return lua_gettop(L);
jbe@140	135 }
jbe@140	136
jbe@145	137 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145	138 static int yieldfunc(lua_State *L) { \
jbe@145	139 int args; \
jbe@145	140 lua_pushcfunction(L, callfunc); \
jbe@145	141 lua_insert(L, 1); \
jbe@145	142 args = lua_gettop(L); \
jbe@148	143 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145	144 lua_insert(L, 3); \
jbe@145	145 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145	146 return lua_gettop(L); \
jbe@145	147 }
jbe@145	148
jbe@256	149 static int moonbr_io_handle_set_nonblocking(lua_State L, moonbr_io_handle_t handle, int nonblocking) {
jbe@95	150 int flags;
jbe@256	151 if (handle->nonblocking == nonblocking) return 0;
jbe@95	152 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@256	153 if (flags == -1) return -1;
jbe@95	154 if (nonblocking) flags \|= O_NONBLOCK;
jbe@95	155 else flags &= ~O_NONBLOCK;
jbe@256	156 if (fcntl(handle->fd, F_SETFL, flags) == -1) return -1;
jbe@95	157 handle->nonblocking = nonblocking;
jbe@256	158 return 0;
jbe@81	159 }
jbe@81	160
jbe@256	161 static int moonbr_io_handle_set_linger(lua_State L, moonbr_io_handle_t handle, int timeout) {
jbe@87	162 struct linger lingerval = { 0, };
jbe@256	163 if (!handle->issock) return 0;
jbe@87	164 if (timeout >= 0) {
jbe@87	165 lingerval.l_onoff = 1;
jbe@87	166 lingerval.l_linger = timeout;
jbe@87	167 }
jbe@256	168 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) return -1;
jbe@256	169 return 0;
jbe@87	170 }
jbe@87	171
jbe@256	172 static inline int moonbr_io_handle_set_nopush(lua_State L, moonbr_io_handle_t handle, int nopush) {
jbe@96	173 #if defined(TCP_NOPUSH) \|\| defined(TCP_CORK)
jbe@107	174 if (
jbe@107	175 !(handle->addrfam == AF_INET6 \|\| handle->addrfam == AF_INET) \|\|
jbe@107	176 handle->nopush == nopush
jbe@256	177 ) return 0;
jbe@96	178 #if defined(TCP_NOPUSH)
jbe@256	179 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) return -1;
jbe@104	180 #elif defined(TCP_CORK)
jbe@256	181 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) return -1;
jbe@251	182 #endif
jbe@95	183 handle->nopush = nopush;
jbe@96	184 #else
jbe@96	185 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96	186 #endif
jbe@256	187 return 0;
jbe@95	188 }
jbe@95	189
jbe@86	190 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85	191 moonbr_io_handle_t *handle;
jbe@85	192 lua_Integer maxread;
jbe@85	193 const char *terminatorstr;
jbe@210	194 size_t terminatorlen;
jbe@210	195 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85	196 luaL_Buffer luabuf;
jbe@85	197 size_t luabufcnt = 0;
jbe@105	198 int remaining;
jbe@85	199 char *terminatorpos;
jbe@103	200 ssize_t bytesread;
jbe@85	201 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153	202 maxread = luaL_optinteger(L, 2, -1);
jbe@85	203 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85	204 if (terminatorlen) {
jbe@85	205 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85	206 terminator = terminatorstr[0];
jbe@85	207 }
jbe@86	208 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94	209 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85	210 if (handle->readerr) {
jbe@85	211 lua_pushnil(L);
jbe@85	212 lua_pushliteral(L, "Previous read error");
jbe@85	213 return 2;
jbe@85	214 }
jbe@143	215 if (handle->fd < 0) {
jbe@143	216 /* fake EOF to simulate shutdown */
jbe@143	217 if (!drain) lua_pushliteral(L, "");
jbe@143	218 else lua_pushinteger(L, 0);
jbe@143	219 lua_pushliteral(L, "eof");
jbe@143	220 return 2;
jbe@143	221 }
jbe@105	222 handle->readerr = 1;
jbe@257	223 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@86	224 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85	225 while (1) {
jbe@105	226 remaining = -1;
jbe@142	227 terminatorpos = NULL;
jbe@105	228 if (
jbe@153	229 maxread >= 0 &&
jbe@143	230 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105	231 ) {
jbe@142	232 remaining = (size_t)maxread - luabufcnt;
jbe@193	233 if (terminatorlen) {
jbe@193	234 terminatorpos = memchr(
jbe@193	235 handle->readbuf + handle->readbufout,
jbe@193	236 terminator,
jbe@193	237 remaining
jbe@193	238 );
jbe@193	239 }
jbe@85	240 } else if (terminatorlen) {
jbe@105	241 terminatorpos = memchr(
jbe@105	242 handle->readbuf + handle->readbufout,
jbe@105	243 terminator,
jbe@105	244 handle->readbufin - handle->readbufout
jbe@105	245 );
jbe@85	246 }
jbe@142	247 if (terminatorpos) remaining = 1 + (
jbe@142	248 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142	249 );
jbe@105	250 if (remaining >= 0) {
jbe@86	251 if (!drain) {
jbe@105	252 luaL_addlstring(
jbe@105	253 &luabuf,
jbe@105	254 handle->readbuf + handle->readbufout,
jbe@105	255 remaining
jbe@105	256 );
jbe@86	257 luaL_pushresult(&luabuf);
jbe@90	258 } else {
jbe@105	259 lua_pushinteger(L, luabufcnt + remaining);
jbe@86	260 }
jbe@143	261 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143	262 else lua_pushliteral(L, "maxlen");
jbe@105	263 handle->readbufout += remaining;
jbe@105	264 if (handle->readbufout == handle->readbufin) {
jbe@105	265 handle->readbufin = 0;
jbe@143	266 handle->readbufout = 0;
jbe@105	267 }
jbe@104	268 handle->readerr = 0;
jbe@143	269 return 2;
jbe@85	270 }
jbe@105	271 if (!drain) luaL_addlstring(
jbe@105	272 &luabuf,
jbe@105	273 handle->readbuf + handle->readbufout,
jbe@105	274 handle->readbufin - handle->readbufout
jbe@105	275 );
jbe@105	276 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143	277 handle->readbufout = 0;
jbe@249	278 #ifdef MOONBR_IO_USE_TLS
jbe@249	279 if (handle->tls) {
jbe@250	280 do {
jbe@250	281 if (!handle->tlshandshake) {
jbe@250	282 do bytesread = tls_handshake(handle->tls);
jbe@250	283 while (!nonblocking && (bytesread == TLS_WANT_POLLIN \|\| bytesread == TLS_WANT_POLLOUT));
jbe@250	284 if (bytesread == TLS_WANT_POLLIN \|\| bytesread == TLS_WANT_POLLOUT) {
jbe@250	285 handle->tlshandshake = bytesread;
jbe@250	286 errno = EAGAIN;
jbe@250	287 break;
jbe@250	288 }
jbe@250	289 if (bytesread < 0) {
jbe@250	290 lua_pushnil(L);
jbe@250	291 lua_pushstring(L, tls_error(handle->tls));
jbe@250	292 return 2;
jbe@250	293 }
jbe@250	294 handle->tlshandshake = 1;
jbe@250	295 }
jbe@250	296 do bytesread = tls_read(handle->tls, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@250	297 while (!nonblocking && (bytesread == TLS_WANT_POLLIN \|\| bytesread == TLS_WANT_POLLOUT));
jbe@250	298 if (bytesread == TLS_WANT_POLLIN \|\| bytesread == TLS_WANT_POLLOUT) {
jbe@250	299 errno = EAGAIN;
jbe@250	300 break;
jbe@250	301 }
jbe@250	302 if (bytesread < 0) {
jbe@250	303 lua_pushnil(L);
jbe@250	304 lua_pushstring(L, tls_error(handle->tls));
jbe@250	305 return 2;
jbe@250	306 }
jbe@250	307 } while (0);
jbe@249	308 }
jbe@249	309 else
jbe@249	310 #endif
jbe@249	311 do bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@249	312 while (bytesread < 0 && (errno == EINTR));
jbe@105	313 if (
jbe@105	314 bytesread == 0 \|\| (
jbe@105	315 nonblocking &&
jbe@105	316 bytesread < 0 && (errno == EAGAIN \|\| errno == EWOULDBLOCK)
jbe@105	317 )
jbe@105	318 ) {
jbe@105	319 handle->readbufin = 0;
jbe@143	320 if (!drain) luaL_pushresult(&luabuf);
jbe@143	321 else lua_pushinteger(L, luabufcnt);
jbe@143	322 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143	323 else lua_pushliteral(L, "block");
jbe@105	324 handle->readerr = 0;
jbe@143	325 return 2;
jbe@105	326 }
jbe@257	327 if (bytesread < 0) moonbr_io_return_errmsg();
jbe@105	328 handle->readbufin = bytesread;
jbe@86	329 }
jbe@85	330 }
jbe@85	331
jbe@85	332 static int moonbr_io_read(lua_State *L) {
jbe@86	333 return moonbr_io_read_impl(L, 0, 0);
jbe@85	334 }
jbe@85	335
jbe@85	336 static int moonbr_io_read_nb(lua_State *L) {
jbe@86	337 return moonbr_io_read_impl(L, 1, 0);
jbe@86	338 }
jbe@86	339
jbe@86	340 static int moonbr_io_drain(lua_State *L) {
jbe@86	341 return moonbr_io_read_impl(L, 0, 1);
jbe@86	342 }
jbe@86	343
jbe@86	344 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86	345 return moonbr_io_read_impl(L, 1, 1);
jbe@85	346 }
jbe@85	347
jbe@140	348 #if LUA_VERSION_NUM >= 503
jbe@140	349 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140	350 #else
jbe@140	351 static int moonbr_io_read_cont(lua_State *L) {
jbe@140	352 #endif
jbe@143	353 lua_Integer remaining;
jbe@143	354 size_t len;
jbe@140	355 #if !(LUA_VERSION_NUM >= 503)
jbe@140	356 int ctx = 0;
jbe@140	357 lua_getctx(L, &ctx);
jbe@140	358 #endif
jbe@140	359 remaining = lua_tointeger(L, 3);
jbe@140	360 while (1) {
jbe@140	361 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140	362 lua_pushvalue(L, 1);
jbe@140	363 lua_pushvalue(L, 3);
jbe@140	364 lua_pushvalue(L, 4);
jbe@140	365 lua_call(L, 3, 2);
jbe@143	366 if (lua_isnil(L, -2)) return 2;
jbe@143	367 lua_insert(L, -2);
jbe@143	368 len = lua_rawlen(L, -1);
jbe@143	369 if (ctx == 0) {
jbe@143	370 lua_replace(L, 5);
jbe@143	371 ctx = 1;
jbe@143	372 } else if (ctx == 1) {
jbe@143	373 lua_pushvalue(L, 5);
jbe@143	374 lua_newtable(L);
jbe@143	375 lua_replace(L, 5);
jbe@304	376 lua_rawseti(L, 5, 1);
jbe@143	377 lua_rawseti(L, 5, 2);
jbe@143	378 ctx = 2;
jbe@140	379 } else {
jbe@143	380 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140	381 }
jbe@144	382 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144	383 lua_pop(L, 1);
jbe@144	384 if (remaining >= 0 && len) {
jbe@143	385 remaining -= len;
jbe@143	386 lua_pushinteger(L, remaining);
jbe@143	387 lua_replace(L, 3);
jbe@143	388 }
jbe@140	389 lua_pushvalue(L, 2);
jbe@313	390 lua_pushvalue(L, 1);
jbe@313	391 lua_pushliteral(L, "r");
jbe@313	392 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@313	393 lua_callk(L, 3, 0, ctx, moonbr_io_read_cont);
jbe@140	394 }
jbe@305	395 if (ctx != 1) {
jbe@140	396 luaL_Buffer buf;
jbe@140	397 lua_Integer i, chunkcount;
jbe@140	398 chunkcount = lua_rawlen(L, 5);
jbe@140	399 luaL_buffinit(L, &buf);
jbe@140	400 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140	401 lua_rawgeti(L, 5, i);
jbe@140	402 luaL_addvalue(&buf);
jbe@140	403 }
jbe@140	404 luaL_pushresult(&buf);
jbe@305	405 lua_pushvalue(L, -2);
jbe@140	406 }
jbe@143	407 return 2;
jbe@140	408 }
jbe@140	409
jbe@140	410 static int moonbr_io_read_call(lua_State *L) {
jbe@140	411 lua_settop(L, 4);
jbe@140	412 lua_pushnil(L);
jbe@140	413 #if LUA_VERSION_NUM >= 503
jbe@140	414 return moonbr_io_read_cont(L, 0, 0);
jbe@140	415 #else
jbe@140	416 return moonbr_io_read_cont(L);
jbe@140	417 #endif
jbe@140	418 }
jbe@140	419
jbe@145	420 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140	421
jbe@144	422 #if LUA_VERSION_NUM >= 503
jbe@144	423 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144	424 #else
jbe@144	425 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144	426 #endif
jbe@144	427 lua_Integer remaining, len;
jbe@144	428 size_t totallen = 0;
jbe@144	429 #if !(LUA_VERSION_NUM >= 503)
jbe@144	430 int ctx = 0;
jbe@144	431 lua_getctx(L, &ctx);
jbe@144	432 #endif
jbe@144	433 remaining = lua_tointeger(L, 3);
jbe@144	434 while (1) {
jbe@144	435 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144	436 lua_pushvalue(L, 1);
jbe@144	437 lua_pushvalue(L, 3);
jbe@144	438 lua_pushvalue(L, 4);
jbe@144	439 lua_call(L, 3, 2);
jbe@144	440 if (lua_isnil(L, -2)) return 2;
jbe@144	441 lua_insert(L, -2);
jbe@144	442 len = lua_tointeger(L, -1);
jbe@144	443 lua_pop(L, 1);
jbe@144	444 totallen += len;
jbe@144	445 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144	446 lua_pop(L, 1);
jbe@144	447 if (remaining >= 0 && len) {
jbe@144	448 remaining -= len;
jbe@144	449 lua_pushinteger(L, remaining);
jbe@144	450 lua_replace(L, 3);
jbe@144	451 }
jbe@144	452 lua_pushvalue(L, 2);
jbe@313	453 lua_pushvalue(L, 1);
jbe@313	454 lua_pushliteral(L, "r");
jbe@313	455 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@313	456 lua_callk(L, 3, 0, ctx, moonbr_io_drain_cont);
jbe@144	457 }
jbe@144	458 lua_pushinteger(L, totallen);
jbe@144	459 lua_pushvalue(L, -2);
jbe@144	460 return 2;
jbe@144	461 }
jbe@144	462
jbe@144	463 static int moonbr_io_drain_call(lua_State *L) {
jbe@144	464 #if LUA_VERSION_NUM >= 503
jbe@144	465 return moonbr_io_drain_cont(L, 0, 0);
jbe@144	466 #else
jbe@144	467 return moonbr_io_drain_cont(L);
jbe@144	468 #endif
jbe@144	469 }
jbe@144	470
jbe@145	471 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144	472
jbe@250	473 #ifdef MOONBR_IO_USE_TLS
jbe@258	474
jbe@250	475 #define moonbr_io_write_tls(buf, buflen) \
jbe@250	476 if (handle->tls) { \
jbe@250	477 do { \
jbe@250	478 if (!handle->tlshandshake) { \
jbe@250	479 do written = tls_handshake(handle->tls); \
jbe@250	480 while (!nonblocking && (written == TLS_WANT_POLLIN \|\| written == TLS_WANT_POLLOUT)); \
jbe@250	481 if (written == TLS_WANT_POLLIN \|\| written == TLS_WANT_POLLOUT) { \
jbe@250	482 handle->tlshandshake = written; \
jbe@250	483 errno = EAGAIN; \
jbe@250	484 break; \
jbe@250	485 } \
jbe@250	486 if (written < 0) { \
jbe@250	487 lua_pushnil(L); \
jbe@250	488 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250	489 return 2; \
jbe@250	490 } \
jbe@250	491 handle->tlshandshake = 1; \
jbe@250	492 } \
jbe@250	493 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250	494 while (!nonblocking && (written == TLS_WANT_POLLIN \|\| written == TLS_WANT_POLLOUT)); \
jbe@250	495 if (written == TLS_WANT_POLLIN \|\| written == TLS_WANT_POLLOUT) { \
jbe@250	496 errno = EAGAIN; \
jbe@250	497 break; \
jbe@250	498 } \
jbe@250	499 if (written < 0) { \
jbe@250	500 lua_pushnil(L); \
jbe@250	501 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250	502 return 2; \
jbe@250	503 } \
jbe@250	504 } while (0); \
jbe@250	505 } \
jbe@250	506 else
jbe@258	507
jbe@258	508 #endif /* MOONBR_IO_USE_TLS */
jbe@250	509
jbe@81	510 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80	511 moonbr_io_handle_t *handle;
jbe@80	512 int i, top;
jbe@80	513 const char *str;
jbe@92	514 size_t strlen;
jbe@103	515 ssize_t written;
jbe@80	516 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94	517 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94	518 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81	519 if (handle->writeerr) {
jbe@80	520 lua_pushnil(L);
jbe@80	521 lua_pushliteral(L, "Previous write error");
jbe@80	522 return 2;
jbe@80	523 }
jbe@103	524 handle->writeerr = 1;
jbe@257	525 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84	526 top = lua_gettop(L);
jbe@81	527 lua_getuservalue(L, 1);
jbe@103	528 lua_getfield(L, -1, "writequeue");
jbe@84	529 for (i=2; i<=top; i++) {
jbe@84	530 luaL_checklstring(L, i, &strlen);
jbe@84	531 lua_pushvalue(L, i);
jbe@84	532 lua_rawseti(L, -2, handle->writeqin++);
jbe@84	533 handle->writeleft += strlen;
jbe@81	534 }
jbe@132	535 if (flush) handle->flushedleft = handle->writeleft;
jbe@83	536 while (handle->writeqout != handle->writeqin) {
jbe@83	537 lua_rawgeti(L, -1, handle->writeqout);
jbe@81	538 str = lua_tolstring(L, -1, &strlen);
jbe@92	539 while (handle->writeqoff < strlen) {
jbe@103	540 if (
jbe@132	541 strlen - handle->writeqoff <
jbe@103	542 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103	543 ) {
jbe@103	544 memcpy(
jbe@103	545 handle->writebuf + handle->writebufin,
jbe@103	546 str + handle->writeqoff,
jbe@103	547 strlen - handle->writeqoff
jbe@103	548 );
jbe@103	549 handle->writebufin += strlen - handle->writeqoff;
jbe@80	550 break;
jbe@80	551 } else {
jbe@103	552 memcpy(
jbe@103	553 handle->writebuf + handle->writebufin,
jbe@103	554 str + handle->writeqoff,
jbe@103	555 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103	556 );
jbe@103	557 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228	558 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103	559 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257	560 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249	561 #ifdef MOONBR_IO_USE_TLS
jbe@250	562 moonbr_io_write_tls(
jbe@250	563 handle->writebuf + handle->writebufout,
jbe@250	564 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250	565 )
jbe@249	566 #endif
jbe@103	567 written = write(
jbe@103	568 handle->fd,
jbe@103	569 handle->writebuf + handle->writebufout,
jbe@103	570 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103	571 );
jbe@103	572 if (written < 0) {
jbe@81	573 if (nonblocking && (errno == EAGAIN \|\| errno == EWOULDBLOCK)) {
jbe@81	574 goto moonbr_io_write_impl_block;
jbe@257	575 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103	576 } else {
jbe@103	577 handle->writebufout += written;
jbe@103	578 handle->writeleft -= written;
jbe@133	579 if (handle->flushedleft) {
jbe@133	580 if (written >= handle->flushedleft) {
jbe@133	581 handle->flushedleft = 0;
jbe@257	582 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133	583 } else {
jbe@133	584 handle->flushedleft -= written;
jbe@133	585 }
jbe@133	586 }
jbe@80	587 }
jbe@80	588 }
jbe@103	589 handle->writebufin = 0;
jbe@103	590 handle->writebufout = 0;
jbe@80	591 }
jbe@80	592 }
jbe@81	593 handle->writeqoff = 0;
jbe@81	594 lua_pop(L, 1);
jbe@81	595 lua_pushnil(L);
jbe@83	596 lua_rawseti(L, -2, handle->writeqout++);
jbe@80	597 }
jbe@132	598 while (handle->flushedleft) {
jbe@257	599 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249	600 #ifdef MOONBR_IO_USE_TLS
jbe@250	601 moonbr_io_write_tls(
jbe@250	602 handle->writebuf + handle->writebufout,
jbe@250	603 handle->writebufin - handle->writebufout
jbe@250	604 )
jbe@249	605 #endif
jbe@132	606 written = write(
jbe@132	607 handle->fd,
jbe@132	608 handle->writebuf + handle->writebufout,
jbe@132	609 handle->writebufin - handle->writebufout
jbe@132	610 );
jbe@132	611 if (written < 0) {
jbe@132	612 if (nonblocking && (errno == EAGAIN \|\| errno == EWOULDBLOCK)) {
jbe@132	613 goto moonbr_io_write_impl_block;
jbe@257	614 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132	615 } else {
jbe@132	616 handle->writebufout += written;
jbe@132	617 handle->writeleft -= written;
jbe@133	618 if (handle->flushedleft) {
jbe@133	619 if (written >= handle->flushedleft) {
jbe@133	620 handle->flushedleft = 0;
jbe@257	621 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133	622 } else {
jbe@133	623 handle->flushedleft -= written;
jbe@133	624 }
jbe@133	625 }
jbe@81	626 }
jbe@132	627 }
jbe@132	628 if (handle->writebufout == handle->writebufin) {
jbe@103	629 handle->writebufin = 0;
jbe@103	630 handle->writebufout = 0;
jbe@81	631 }
jbe@103	632 if (nonblocking) lua_pushinteger(L, 0);
jbe@103	633 else lua_pushvalue(L, 1);
jbe@103	634 handle->writeerr = 0;
jbe@80	635 return 1;
jbe@81	636 moonbr_io_write_impl_block:
jbe@91	637 lua_pushinteger(L, handle->writeleft);
jbe@103	638 handle->writeerr = 0;
jbe@81	639 return 1;
jbe@81	640 }
jbe@81	641
jbe@81	642 static int moonbr_io_write(lua_State *L) {
jbe@81	643 return moonbr_io_write_impl(L, 0, 0);
jbe@81	644 }
jbe@81	645
jbe@81	646 static int moonbr_io_write_nb(lua_State *L) {
jbe@81	647 return moonbr_io_write_impl(L, 1, 0);
jbe@80	648 }
jbe@80	649
jbe@80	650 static int moonbr_io_flush(lua_State *L) {
jbe@81	651 return moonbr_io_write_impl(L, 0, 1);
jbe@81	652 }
jbe@81	653
jbe@81	654 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81	655 return moonbr_io_write_impl(L, 1, 1);
jbe@80	656 }
jbe@80	657
jbe@145	658 #if LUA_VERSION_NUM >= 503
jbe@145	659 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145	660 #else
jbe@145	661 static int moonbr_io_write_cont(lua_State *L) {
jbe@145	662 #endif
jbe@145	663 while (1) {
jbe@145	664 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145	665 lua_pushvalue(L, 1);
jbe@145	666 lua_call(L, 1, 2);
jbe@145	667 if (lua_isnil(L, -2)) return 2;
jbe@145	668 if (!lua_tointeger(L, -2)) {
jbe@145	669 lua_pushvalue(L, 1);
jbe@145	670 return 1;
jbe@145	671 }
jbe@145	672 lua_pop(L, 2);
jbe@145	673 lua_pushvalue(L, 2);
jbe@313	674 lua_pushvalue(L, 1);
jbe@313	675 lua_pushliteral(L, "w");
jbe@313	676 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@152	677 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145	678 }
jbe@145	679 }
jbe@145	680
jbe@145	681 static int moonbr_io_write_call(lua_State *L) {
jbe@145	682 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145	683 lua_insert(L, 3);
jbe@145	684 lua_pushvalue(L, 1);
jbe@145	685 lua_insert(L, 4);
jbe@145	686 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145	687 if (lua_isnil(L, -2)) return 2;
jbe@145	688 if (!lua_tointeger(L, -2)) {
jbe@145	689 lua_pushvalue(L, 1);
jbe@145	690 return 1;
jbe@145	691 }
jbe@145	692 #if LUA_VERSION_NUM >= 503
jbe@145	693 return moonbr_io_write_cont(L, 0, 0);
jbe@145	694 #else
jbe@145	695 return moonbr_io_write_cont(L);
jbe@145	696 #endif
jbe@145	697 }
jbe@145	698
jbe@145	699 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145	700
jbe@145	701 static int moonbr_io_flush_call(lua_State *L) {
jbe@145	702 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145	703 lua_insert(L, 3);
jbe@145	704 lua_pushvalue(L, 1);
jbe@145	705 lua_insert(L, 4);
jbe@145	706 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145	707 if (lua_isnil(L, -2)) return 2;
jbe@145	708 if (!lua_tointeger(L, -2)) {
jbe@145	709 lua_pushvalue(L, 1);
jbe@145	710 return 1;
jbe@145	711 }
jbe@145	712 #if LUA_VERSION_NUM >= 503
jbe@145	713 return moonbr_io_write_cont(L, 0, 0);
jbe@145	714 #else
jbe@145	715 return moonbr_io_write_cont(L);
jbe@145	716 #endif
jbe@145	717 }
jbe@145	718
jbe@145	719 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145	720
jbe@88	721 static int moonbr_io_finish(lua_State *L) {
jbe@88	722 moonbr_io_handle_t *handle;
jbe@88	723 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94	724 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94	725 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94	726 if (handle->writeleft) {
jbe@94	727 lua_pushcfunction(L, moonbr_io_flush);
jbe@94	728 lua_pushvalue(L, 1);
jbe@116	729 if (lua_pcall(L, 1, 2, 0)) {
jbe@116	730 handle->finished = 1;
jbe@116	731 lua_error(L);
jbe@116	732 }
jbe@94	733 if (!lua_toboolean(L, -2)) {
jbe@94	734 handle->finished = 1;
jbe@94	735 return 2;
jbe@88	736 }
jbe@94	737 }
jbe@94	738 handle->finished = 1;
jbe@260	739 #ifdef MOONBR_IO_USE_TLS
jbe@260	740 if ((handle->addrfam == AF_INET6 \|\| handle->addrfam == AF_INET) && !handle->tls) {
jbe@260	741 #else
jbe@107	742 if (handle->addrfam == AF_INET6 \|\| handle->addrfam == AF_INET) {
jbe@260	743 #endif
jbe@257	744 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94	745 } else {
jbe@251	746 #ifdef MOONBR_IO_USE_TLS
jbe@260	747 if (handle->tls) {
jbe@260	748 int status;
jbe@260	749 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260	750 do status = tls_close(handle->tls);
jbe@260	751 while (status == TLS_WANT_POLLIN \|\| status == TLS_WANT_POLLOUT);
jbe@260	752 if (status) {
jbe@260	753 close(handle->fd);
jbe@260	754 handle->fd = -1;
jbe@260	755 lua_pushnil(L);
jbe@260	756 lua_pushstring(L, tls_error(handle->tls));
jbe@260	757 return 2;
jbe@260	758 }
jbe@260	759 }
jbe@251	760 #endif
jbe@94	761 if (close(handle->fd)) {
jbe@94	762 handle->fd = -1;
jbe@257	763 moonbr_io_return_errmsg();
jbe@94	764 }
jbe@94	765 handle->fd = -1; /* fake EOF on read */
jbe@88	766 }
jbe@88	767 lua_pushboolean(L, 1);
jbe@88	768 return 1;
jbe@88	769 }
jbe@88	770
jbe@261	771 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83	772 moonbr_io_handle_t *handle;
jbe@83	773 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94	774 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259	775 if (!reset && handle->fd >= 0) {
jbe@87	776 if (handle->writeleft) {
jbe@261	777 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87	778 lua_pushvalue(L, 1);
jbe@116	779 if (lua_pcall(L, 1, 2, 0)) {
jbe@129	780 handle->closed = 1;
jbe@116	781 close(handle->fd);
jbe@116	782 handle->fd = -1;
jbe@116	783 lua_error(L);
jbe@116	784 }
jbe@261	785 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87	786 if (!lua_toboolean(L, -2)) {
jbe@87	787 close(handle->fd);
jbe@87	788 handle->fd = -1;
jbe@87	789 return 2;
jbe@87	790 }
jbe@261	791 #if LUA_VERSION_NUM >= 503
jbe@261	792 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261	793 #else
jbe@261	794 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261	795 #endif
jbe@261	796 lua_pushliteral(L, "flush");
jbe@261	797 lua_pushvalue(L, -3);
jbe@261	798 return 2;
jbe@261	799 }
jbe@129	800 } else {
jbe@129	801 handle->closed = 1;
jbe@83	802 }
jbe@260	803 #ifdef MOONBR_IO_USE_TLS
jbe@260	804 if (handle->tls) {
jbe@260	805 int status;
jbe@261	806 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260	807 do status = tls_close(handle->tls);
jbe@261	808 while (!nonblocking && (status == TLS_WANT_POLLIN \|\| status == TLS_WANT_POLLOUT));
jbe@261	809 if (status == TLS_WANT_POLLIN \|\| status == TLS_WANT_POLLOUT) {
jbe@261	810 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261	811 lua_pushliteral(L, "close");
jbe@261	812 return 1;
jbe@261	813 }
jbe@260	814 if (status) {
jbe@260	815 close(handle->fd);
jbe@260	816 handle->fd = -1;
jbe@260	817 lua_pushnil(L);
jbe@260	818 lua_pushstring(L, tls_error(handle->tls));
jbe@260	819 return 2;
jbe@260	820 }
jbe@260	821 }
jbe@260	822 #endif
jbe@256	823 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257	824 moonbr_io_prepare_errmsg();
jbe@256	825 close(handle->fd);
jbe@256	826 handle->fd = -1;
jbe@257	827 moonbr_io_return_prepared_errmsg();
jbe@256	828 }
jbe@129	829 } else {
jbe@129	830 handle->closed = 1;
jbe@83	831 }
jbe@94	832 if (handle->fd >= 0) {
jbe@94	833 if (close(handle->fd)) {
jbe@94	834 handle->fd = -1;
jbe@257	835 moonbr_io_return_errmsg();
jbe@94	836 }
jbe@104	837 handle->fd = -1;
jbe@83	838 }
jbe@83	839 lua_pushboolean(L, 1);
jbe@83	840 return 1;
jbe@84	841
jbe@83	842 }
jbe@83	843
jbe@94	844 static int moonbr_io_close(lua_State *L) {
jbe@261	845 return moonbr_io_close_impl(L, 0, 0);
jbe@94	846 }
jbe@94	847
jbe@84	848 static int moonbr_io_reset(lua_State *L) {
jbe@261	849 return moonbr_io_close_impl(L, 0, 1);
jbe@84	850 }
jbe@84	851
jbe@108	852 static int moonbr_io_handlegc(lua_State *L) {
jbe@88	853 moonbr_io_handle_t *handle;
jbe@88	854 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88	855 if (handle->fd >= 0) {
jbe@218	856 lua_pushcfunction(L, moonbr_io_reset);
jbe@88	857 lua_pushvalue(L, 1);
jbe@88	858 lua_pushinteger(L, 0);
jbe@88	859 lua_call(L, 2, 0);
jbe@88	860 }
jbe@246	861 #ifdef MOONBR_IO_USE_TLS
jbe@246	862 if (handle->tls) {
jbe@246	863 tls_free(handle->tls);
jbe@246	864 handle->tls = NULL;
jbe@246	865 }
jbe@246	866 if (handle->servertls) {
jbe@246	867 tls_free(handle->servertls);
jbe@246	868 handle->servertls = NULL;
jbe@246	869 }
jbe@246	870 #endif
jbe@88	871 return 0;
jbe@88	872 }
jbe@88	873
jbe@100	874 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88	875 moonbr_io_handle_t *handle;
jbe@88	876 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100	877 if (!handle->closed) {
jbe@100	878 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100	879 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100	880 lua_call(L, 1, 0);
jbe@88	881 }
jbe@88	882 }
jbe@88	883
jbe@208	884 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208	885 int *fd;
jbe@311	886 int skip_peeraddr;
jbe@79	887 moonbr_io_handle_t *handle;
jbe@107	888 struct sockaddr addr;
jbe@107	889 socklen_t addrlen;
jbe@208	890 fd = lua_touserdata(L, 1);
jbe@311	891 skip_peeraddr = lua_toboolean(L, 2);
jbe@79	892 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208	893 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107	894 addrlen = sizeof(addr);
jbe@208	895 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107	896 if (errno != ENOTSOCK) {
jbe@257	897 moonbr_io_prepare_errmsg();
jbe@107	898 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107	899 }
jbe@107	900 handle->issock = 0;
jbe@107	901 } else {
jbe@107	902 handle->issock = 1;
jbe@107	903 handle->addrfam = addr.sa_family;
jbe@107	904 }
jbe@94	905 handle->finished = 0;
jbe@94	906 handle->closed = 0;
jbe@81	907 handle->nonblocking = -1;
jbe@95	908 handle->nopush = -1;
jbe@85	909 handle->readerr = 0;
jbe@105	910 handle->readbufin = 0;
jbe@105	911 handle->readbufout = 0;
jbe@81	912 handle->writeerr = 0;
jbe@81	913 handle->writeleft = 0;
jbe@132	914 handle->flushedleft = 0;
jbe@83	915 handle->writeqin = 0;
jbe@83	916 handle->writeqout = 0;
jbe@81	917 handle->writeqoff = 0;
jbe@103	918 handle->writebufin = 0;
jbe@103	919 handle->writebufout = 0;
jbe@246	920 #ifdef MOONBR_IO_USE_TLS
jbe@246	921 handle->tls = NULL;
jbe@246	922 handle->servertls = NULL;
jbe@250	923 handle->tlshandshake = 0;
jbe@261	924 handle->tlsclosing = 0;
jbe@246	925 #endif
jbe@208	926 handle->fd = fd; / required for set_linger call */
jbe@256	927 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257	928 moonbr_io_prepare_errmsg();
jbe@256	929 handle->fd = -1;
jbe@256	930 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256	931 }
jbe@208	932 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238	933 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79	934 lua_newtable(L); // uservalue
jbe@81	935 lua_newtable(L);
jbe@103	936 lua_setfield(L, -2, "writequeue");
jbe@79	937 lua_newtable(L); // public
jbe@107	938 if (handle->addrfam == AF_INET6) {
jbe@107	939 struct sockaddr_in6 addr_in6;
jbe@107	940 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107	941 const char *addrstr;
jbe@107	942 addrlen = sizeof(addr_in6);
jbe@311	943 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311	944 * was reset. There seems to be no problem in practice though. */
jbe@208	945 if (getsockname(fd, (struct sockaddr )&addr_in6, &addrlen)) {
jbe@257	946 moonbr_io_prepare_errmsg();
jbe@107	947 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107	948 }
jbe@107	949 if (addrlen > sizeof(addr_in6)) {
jbe@107	950 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107	951 }
jbe@107	952 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107	953 if (!addrstr) {
jbe@257	954 moonbr_io_prepare_errmsg();
jbe@107	955 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107	956 } else {
jbe@107	957 lua_pushstring(L, addrstr);
jbe@107	958 lua_setfield(L, -2, "local_ip6");
jbe@107	959 }
jbe@107	960 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107	961 lua_setfield(L, -2, "local_tcpport");
jbe@311	962 if (!skip_peeraddr) {
jbe@311	963 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311	964 * was reset. There seems to be no problem in practice though. */
jbe@311	965 if (getpeername(fd, (struct sockaddr )&addr_in6, &addrlen)) {
jbe@311	966 moonbr_io_prepare_errmsg();
jbe@311	967 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311	968 }
jbe@311	969 if (addrlen > sizeof(addr_in6)) {
jbe@311	970 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311	971 }
jbe@311	972 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311	973 if (!addrstr) {
jbe@311	974 moonbr_io_prepare_errmsg();
jbe@311	975 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311	976 } else {
jbe@311	977 lua_pushstring(L, addrstr);
jbe@311	978 lua_setfield(L, -2, "remote_ip6");
jbe@311	979 }
jbe@311	980 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@311	981 lua_setfield(L, -2, "remote_tcpport");
jbe@107	982 }
jbe@107	983 } else if (handle->addrfam == AF_INET) {
jbe@107	984 struct sockaddr_in addr_in;
jbe@107	985 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107	986 const char *addrstr;
jbe@107	987 addrlen = sizeof(addr_in);
jbe@311	988 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311	989 * was reset. There seems to be no problem in practice though. */
jbe@208	990 if (getsockname(fd, (struct sockaddr )&addr_in, &addrlen)) {
jbe@257	991 moonbr_io_prepare_errmsg();
jbe@107	992 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107	993 }
jbe@107	994 if (addrlen > sizeof(addr_in)) {
jbe@107	995 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107	996 }
jbe@107	997 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107	998 if (!addrstr) {
jbe@257	999 moonbr_io_prepare_errmsg();
jbe@107	1000 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107	1001 } else {
jbe@107	1002 lua_pushstring(L, addrstr);
jbe@107	1003 lua_setfield(L, -2, "local_ip4");
jbe@107	1004 }
jbe@107	1005 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107	1006 lua_setfield(L, -2, "local_tcpport");
jbe@311	1007 if (!skip_peeraddr) {
jbe@311	1008 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311	1009 * was reset. There seems to be no problem in practice though. */
jbe@311	1010 if (getpeername(fd, (struct sockaddr )&addr_in, &addrlen)) {
jbe@311	1011 moonbr_io_prepare_errmsg();
jbe@311	1012 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311	1013 }
jbe@311	1014 if (addrlen > sizeof(addr_in)) {
jbe@311	1015 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311	1016 }
jbe@311	1017 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311	1018 if (!addrstr) {
jbe@311	1019 moonbr_io_prepare_errmsg();
jbe@311	1020 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311	1021 } else {
jbe@311	1022 lua_pushstring(L, addrstr);
jbe@311	1023 lua_setfield(L, -2, "remote_ip4");
jbe@311	1024 }
jbe@311	1025 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@311	1026 lua_setfield(L, -2, "remote_tcpport");
jbe@107	1027 }
jbe@107	1028 }
jbe@238	1029 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79	1030 lua_setfield(L, -2, "public");
jbe@79	1031 lua_setuservalue(L, -2);
jbe@208	1032 handle->fd = *fd;
jbe@208	1033 fd = -1; / closing is now handled by garbage collection */
jbe@208	1034 return 1;
jbe@208	1035 }
jbe@208	1036
jbe@208	1037 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208	1038 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208	1039 lua_pushlightuserdata(L, &fd);
jbe@208	1040 if (lua_pcall(L, 1, 1, 0)) {
jbe@251	1041 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208	1042 lua_error(L);
jbe@208	1043 }
jbe@79	1044 }
jbe@79	1045
jbe@311	1046 void moonbr_io_pushhandle_skip_peeraddr(lua_State *L, int fd) {
jbe@311	1047 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@311	1048 lua_pushlightuserdata(L, &fd);
jbe@311	1049 lua_pushboolean(L, 1);
jbe@311	1050 if (lua_pcall(L, 2, 1, 0)) {
jbe@311	1051 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@311	1052 lua_error(L);
jbe@311	1053 }
jbe@311	1054 }
jbe@311	1055
jbe@79	1056 static int moonbr_io_handleindex(lua_State *L) {
jbe@80	1057 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205	1058 luaL_checkany(L, 2);
jbe@79	1059 lua_getuservalue(L, 1);
jbe@79	1060 lua_getfield(L, -1, "public");
jbe@79	1061 lua_pushvalue(L, 2);
jbe@79	1062 lua_gettable(L, -2);
jbe@79	1063 return 1;
jbe@79	1064 }
jbe@79	1065
jbe@79	1066 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80	1067 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205	1068 luaL_checkany(L, 2);
jbe@205	1069 luaL_checkany(L, 3);
jbe@79	1070 lua_getuservalue(L, 1);
jbe@79	1071 lua_getfield(L, -1, "public");
jbe@79	1072 lua_pushvalue(L, 2);
jbe@79	1073 lua_pushvalue(L, 3);
jbe@79	1074 lua_settable(L, -3);
jbe@79	1075 return 0;
jbe@79	1076 }
jbe@79	1077
jbe@111	1078 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111	1079 const char *path;
jbe@111	1080 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111	1081 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111	1082 (void )sockaddr.sun_path - (void )&sockaddr
jbe@111	1083 ) - 1; /* one byte for termination */
jbe@111	1084 int sock;
jbe@111	1085 path = luaL_checkstring(L, 1);
jbe@111	1086 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111	1087 strcpy(sockaddr.sun_path, path);
jbe@111	1088 sock = socket(
jbe@111	1089 PF_LOCAL,
jbe@111	1090 SOCK_STREAM \| SOCK_CLOEXEC \| (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111	1091 0
jbe@111	1092 );
jbe@257	1093 if (sock < 0) moonbr_io_return_errmsg();
jbe@111	1094 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111	1095 if (!nonblocking && errno == EINTR) {
jbe@257	1096 moonbr_io_prepare_errmsg();
jbe@111	1097 close(sock);
jbe@257	1098 moonbr_io_return_prepared_errmsg();
jbe@257	1099 } else if (!(nonblocking && (errno == EINPROGRESS \|\| errno == EINTR))) moonbr_io_return_errmsg();
jbe@111	1100 }
jbe@111	1101 moonbr_io_pushhandle(L, sock);
jbe@111	1102 return 1;
jbe@111	1103 }
jbe@111	1104
jbe@111	1105 static int moonbr_io_localconnect(lua_State *L) {
jbe@111	1106 return moonbr_io_localconnect_impl(L, 0);
jbe@111	1107 }
jbe@111	1108
jbe@111	1109 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111	1110 return moonbr_io_localconnect_impl(L, 1);
jbe@111	1111 }
jbe@111	1112
jbe@99	1113 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98	1114 const char host, port;
jbe@98	1115 struct addrinfo hints = { 0, };
jbe@98	1116 struct addrinfo res, addrinfo;
jbe@98	1117 int errcode;
jbe@98	1118 int sock;
jbe@98	1119 host = luaL_checkstring(L, 1);
jbe@98	1120 port = luaL_checkstring(L, 2);
jbe@98	1121 hints.ai_family = AF_UNSPEC;
jbe@98	1122 hints.ai_socktype = SOCK_STREAM;
jbe@98	1123 hints.ai_protocol = IPPROTO_TCP;
jbe@98	1124 hints.ai_flags = AI_ADDRCONFIG;
jbe@98	1125 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98	1126 if (errcode) {
jbe@102	1127 freeaddrinfo(res);
jbe@98	1128 if (errcode == EAI_SYSTEM) {
jbe@257	1129 moonbr_io_prepare_errmsg();
jbe@98	1130 lua_pushnil(L);
jbe@98	1131 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98	1132 } else {
jbe@98	1133 lua_pushnil(L);
jbe@98	1134 lua_pushstring(L, gai_strerror(errcode));
jbe@98	1135 }
jbe@98	1136 return 2;
jbe@98	1137 }
jbe@98	1138 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134	1139 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98	1140 }
jbe@98	1141 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134	1142 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98	1143 }
jbe@98	1144 addrinfo = res;
jbe@98	1145 moonbr_io_tcpconnect_found:
jbe@99	1146 sock = socket(
jbe@134	1147 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99	1148 addrinfo->ai_socktype \| SOCK_CLOEXEC \| (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99	1149 addrinfo->ai_protocol
jbe@99	1150 );
jbe@98	1151 if (sock < 0) {
jbe@257	1152 moonbr_io_prepare_errmsg();
jbe@108	1153 freeaddrinfo(res);
jbe@257	1154 moonbr_io_return_prepared_errmsg();
jbe@98	1155 }
jbe@98	1156 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108	1157 freeaddrinfo(res);
jbe@99	1158 if (!nonblocking && errno == EINTR) {
jbe@257	1159 moonbr_io_prepare_errmsg();
jbe@99	1160 close(sock);
jbe@257	1161 moonbr_io_return_prepared_errmsg();
jbe@257	1162 } else if (!(nonblocking && (errno == EINPROGRESS \|\| errno == EINTR))) moonbr_io_return_errmsg();
jbe@108	1163 } else {
jbe@108	1164 freeaddrinfo(res);
jbe@98	1165 }
jbe@311	1166 if (nonblocking) {
jbe@311	1167 moonbr_io_pushhandle_skip_peeraddr(L, sock);
jbe@311	1168 if (addrinfo->ai_family == AF_INET6) {
jbe@311	1169 // TODO: fill remote_ip6 and remote_tcpport
jbe@311	1170 } else if (addrinfo->ai_family == AF_INET) {
jbe@311	1171 // TODO: fill remote_ip4 and remote_tcpport
jbe@311	1172 }
jbe@311	1173 } else {
jbe@311	1174 moonbr_io_pushhandle(L, sock);
jbe@311	1175 }
jbe@98	1176 return 1;
jbe@98	1177 }
jbe@98	1178
jbe@99	1179 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99	1180 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99	1181 }
jbe@99	1182
jbe@99	1183 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99	1184 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99	1185 }
jbe@99	1186
jbe@112	1187 static int moonbr_io_locallisten(lua_State *L) {
jbe@112	1188 moonbr_io_listener_t *listener;
jbe@112	1189 const char *path;
jbe@118	1190 struct stat sb;
jbe@112	1191 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112	1192 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112	1193 (void )sockaddr.sun_path - (void )&sockaddr
jbe@112	1194 ) - 1; /* one byte for termination */
jbe@112	1195 int sock;
jbe@112	1196 path = luaL_checkstring(L, 1);
jbe@112	1197 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112	1198 strcpy(sockaddr.sun_path, path);
jbe@118	1199 if (stat(path, &sb) == 0) {
jbe@118	1200 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118	1201 }
jbe@112	1202 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117	1203 listener->fd = -1;
jbe@112	1204 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112	1205 sock = socket(
jbe@112	1206 PF_LOCAL,
jbe@112	1207 SOCK_STREAM \| SOCK_CLOEXEC,
jbe@112	1208 0
jbe@112	1209 );
jbe@257	1210 if (sock < 0) moonbr_io_return_errmsg();
jbe@112	1211 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257	1212 moonbr_io_prepare_errmsg();
jbe@112	1213 close(sock);
jbe@257	1214 moonbr_io_return_prepared_errmsg();
jbe@112	1215 }
jbe@112	1216 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257	1217 moonbr_io_prepare_errmsg();
jbe@112	1218 close(sock);
jbe@257	1219 moonbr_io_return_prepared_errmsg();
jbe@112	1220 }
jbe@112	1221 listener->fd = sock;
jbe@118	1222 listener->addrfam = AF_LOCAL;
jbe@112	1223 listener->nonblocking = -1;
jbe@112	1224 return 1;
jbe@112	1225 }
jbe@112	1226
jbe@108	1227 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108	1228 moonbr_io_listener_t *listener;
jbe@108	1229 const char host, port;
jbe@108	1230 struct addrinfo hints = { 0, };
jbe@108	1231 struct addrinfo res, addrinfo;
jbe@108	1232 int errcode;
jbe@108	1233 int sock;
jbe@108	1234 host = luaL_optstring(L, 1, NULL);
jbe@108	1235 port = luaL_checkstring(L, 2);
jbe@108	1236 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117	1237 listener->fd = -1;
jbe@108	1238 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108	1239 hints.ai_family = AF_UNSPEC;
jbe@108	1240 hints.ai_socktype = SOCK_STREAM;
jbe@108	1241 hints.ai_protocol = IPPROTO_TCP;
jbe@108	1242 hints.ai_flags = AI_ADDRCONFIG \| AI_PASSIVE;
jbe@108	1243 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108	1244 if (errcode) {
jbe@108	1245 freeaddrinfo(res);
jbe@108	1246 if (errcode == EAI_SYSTEM) {
jbe@257	1247 moonbr_io_prepare_errmsg();
jbe@108	1248 lua_pushnil(L);
jbe@108	1249 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108	1250 } else {
jbe@108	1251 lua_pushnil(L);
jbe@108	1252 lua_pushstring(L, gai_strerror(errcode));
jbe@108	1253 }
jbe@108	1254 return 2;
jbe@108	1255 }
jbe@108	1256 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134	1257 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108	1258 }
jbe@108	1259 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134	1260 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108	1261 }
jbe@108	1262 addrinfo = res;
jbe@108	1263 moonbr_io_tcpconnect_found:
jbe@118	1264 listener->addrfam = addrinfo->ai_family;
jbe@108	1265 sock = socket(
jbe@134	1266 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108	1267 addrinfo->ai_socktype \| SOCK_CLOEXEC,
jbe@108	1268 addrinfo->ai_protocol
jbe@108	1269 );
jbe@108	1270 if (sock < 0) {
jbe@257	1271 moonbr_io_prepare_errmsg();
jbe@108	1272 freeaddrinfo(res);
jbe@257	1273 moonbr_io_return_prepared_errmsg();
jbe@108	1274 }
jbe@120	1275 {
jbe@120	1276 static const int reuseval = 1;
jbe@120	1277 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257	1278 moonbr_io_prepare_errmsg();
jbe@120	1279 freeaddrinfo(res);
jbe@120	1280 close(sock);
jbe@120	1281 lua_pushnil(L);
jbe@120	1282 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120	1283 return 2;
jbe@120	1284 }
jbe@120	1285 }
jbe@108	1286 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257	1287 moonbr_io_prepare_errmsg();
jbe@108	1288 freeaddrinfo(res);
jbe@108	1289 close(sock);
jbe@257	1290 moonbr_io_return_prepared_errmsg();
jbe@108	1291 }
jbe@108	1292 freeaddrinfo(res);
jbe@108	1293 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257	1294 moonbr_io_prepare_errmsg();
jbe@108	1295 close(sock);
jbe@257	1296 moonbr_io_return_prepared_errmsg();
jbe@108	1297 }
jbe@108	1298 listener->fd = sock;
jbe@108	1299 listener->nonblocking = -1;
jbe@108	1300 return 1;
jbe@108	1301 }
jbe@108	1302
jbe@108	1303 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108	1304 moonbr_io_listener_t *listener;
jbe@108	1305 int fd;
jbe@108	1306 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108	1307 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108	1308 if (listener->nonblocking != nonblocking) {
jbe@108	1309 int flags;
jbe@108	1310 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108	1311 if (flags == -1) {
jbe@257	1312 moonbr_io_prepare_errmsg();
jbe@108	1313 close(listener->fd);
jbe@108	1314 listener->fd = -1;
jbe@108	1315 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108	1316 }
jbe@108	1317 if (nonblocking) flags \|= O_NONBLOCK;
jbe@108	1318 else flags &= ~O_NONBLOCK;
jbe@108	1319 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257	1320 moonbr_io_prepare_errmsg();
jbe@108	1321 close(listener->fd);
jbe@108	1322 listener->fd = -1;
jbe@108	1323 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108	1324 }
jbe@108	1325 listener->nonblocking = nonblocking;
jbe@108	1326 }
jbe@108	1327 while (1) {
jbe@214	1328 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215	1329 fd = accept(listener->fd, NULL, NULL);
jbe@214	1330 if (fd != -1) {
jbe@214	1331 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257	1332 moonbr_io_prepare_errmsg();
jbe@214	1333 close(listener->fd);
jbe@214	1334 listener->fd = -1;
jbe@214	1335 close(fd);
jbe@214	1336 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214	1337 }
jbe@214	1338 }
jbe@214	1339 #else
jbe@108	1340 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214	1341 #endif
jbe@108	1342 if (fd < 0) {
jbe@108	1343 if (nonblocking && (errno == EAGAIN \|\| errno == EWOULDBLOCK)) {
jbe@108	1344 lua_pushboolean(L, 0);
jbe@108	1345 lua_pushliteral(L, "No incoming connection pending");
jbe@108	1346 return 2;
jbe@257	1347 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108	1348 } else {
jbe@108	1349 moonbr_io_pushhandle(L, fd);
jbe@108	1350 return 1;
jbe@108	1351 }
jbe@108	1352 }
jbe@108	1353 }
jbe@108	1354
jbe@108	1355 static int moonbr_io_accept(lua_State *L) {
jbe@108	1356 return moonbr_io_accept_impl(L, 0);
jbe@108	1357 }
jbe@108	1358
jbe@108	1359 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108	1360 return moonbr_io_accept_impl(L, 1);
jbe@108	1361 }
jbe@108	1362
jbe@108	1363 static int moonbr_io_unlisten(lua_State *L) {
jbe@108	1364 moonbr_io_listener_t *listener;
jbe@118	1365 struct sockaddr_un addr;
jbe@118	1366 socklen_t addrlen;
jbe@118	1367 struct stat sb;
jbe@108	1368 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108	1369 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118	1370 addrlen = sizeof(addr);
jbe@118	1371 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108	1372 if (close(listener->fd)) {
jbe@257	1373 moonbr_io_prepare_errmsg();
jbe@108	1374 listener->fd = -1;
jbe@118	1375 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118	1376 if (stat(addr.sun_path, &sb) == 0) {
jbe@118	1377 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118	1378 }
jbe@118	1379 }
jbe@257	1380 moonbr_io_return_prepared_errmsg();
jbe@108	1381 }
jbe@108	1382 listener->fd = -1;
jbe@118	1383 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118	1384 if (stat(addr.sun_path, &sb) == 0) {
jbe@118	1385 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118	1386 }
jbe@118	1387 }
jbe@108	1388 lua_pushboolean(L, 1);
jbe@108	1389 return 1;
jbe@108	1390 }
jbe@108	1391
jbe@108	1392 static int moonbr_io_listenergc(lua_State *L) {
jbe@108	1393 moonbr_io_listener_t *listener;
jbe@108	1394 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117	1395 if (listener->fd >= 0) close(listener->fd);
jbe@108	1396 listener->fd = -1;
jbe@108	1397 return 0;
jbe@108	1398 }
jbe@108	1399
jbe@205	1400 static int moonbr_io_exec(lua_State *L) {
jbe@205	1401 char **argv;
jbe@205	1402 int i, argc;
jbe@205	1403 int sockin[2], sockout[2], sockerr[2];
jbe@205	1404 volatile int errorcond = 0;
jbe@213	1405 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205	1406 moonbr_io_child_t *child;
jbe@205	1407 argc = lua_gettop(L);
jbe@205	1408 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205	1409 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205	1410 argv[argc] = NULL;
jbe@208	1411 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208	1412 child->pid = 0;
jbe@303	1413 child->status_valid = 0;
jbe@208	1414 lua_newtable(L);
jbe@208	1415 lua_setuservalue(L, -2);
jbe@238	1416 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206	1417 if (socketpair(PF_LOCAL, SOCK_STREAM \| SOCK_CLOEXEC, 0, sockin)) {
jbe@257	1418 moonbr_io_prepare_errmsg();
jbe@205	1419 lua_pushnil(L);
jbe@205	1420 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205	1421 return 2;
jbe@205	1422 }
jbe@206	1423 if (socketpair(PF_LOCAL, SOCK_STREAM \| SOCK_CLOEXEC, 0, sockout)) {
jbe@257	1424 moonbr_io_prepare_errmsg();
jbe@205	1425 close(sockin[0]);
jbe@205	1426 close(sockin[1]);
jbe@205	1427 lua_pushnil(L);
jbe@205	1428 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205	1429 return 2;
jbe@205	1430 }
jbe@206	1431 if (socketpair(PF_LOCAL, SOCK_STREAM \| SOCK_CLOEXEC, 0, sockerr)) {
jbe@257	1432 moonbr_io_prepare_errmsg();
jbe@205	1433 close(sockin[0]);
jbe@205	1434 close(sockin[1]);
jbe@205	1435 close(sockout[0]);
jbe@205	1436 close(sockout[1]);
jbe@205	1437 lua_pushnil(L);
jbe@205	1438 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205	1439 return 2;
jbe@205	1440 }
jbe@205	1441 child->pid = vfork();
jbe@205	1442 if (child->pid == -1) {
jbe@257	1443 moonbr_io_prepare_errmsg();
jbe@205	1444 close(sockin[0]);
jbe@205	1445 close(sockin[1]);
jbe@205	1446 close(sockout[0]);
jbe@205	1447 close(sockout[1]);
jbe@205	1448 close(sockerr[0]);
jbe@205	1449 close(sockerr[1]);
jbe@205	1450 lua_pushnil(L);
jbe@205	1451 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205	1452 return 2;
jbe@205	1453 }
jbe@205	1454 if (!child->pid) {
jbe@208	1455 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208	1456 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208	1457 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232	1458 closefrom(3);
jbe@208	1459 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208	1460 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208	1461 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205	1462 if (execvp(argv[0], argv)) {
jbe@205	1463 errorcond = 2;
jbe@205	1464 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205	1465 _exit(0);
jbe@205	1466 }
jbe@208	1467 moonbr_io_exec_error1:
jbe@206	1468 errorcond = 1;
jbe@206	1469 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206	1470 _exit(0);
jbe@205	1471 }
jbe@205	1472 close(sockin[1]);
jbe@205	1473 close(sockout[1]);
jbe@205	1474 close(sockerr[1]);
jbe@205	1475 if (errorcond) {
jbe@205	1476 int status;
jbe@205	1477 close(sockin[0]);
jbe@205	1478 close(sockout[0]);
jbe@205	1479 close(sockerr[0]);
jbe@205	1480 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205	1481 if (errno != EINTR) {
jbe@257	1482 moonbr_io_prepare_errmsg();
jbe@205	1483 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205	1484 }
jbe@205	1485 }
jbe@208	1486 child->pid = 0;
jbe@205	1487 lua_pushnil(L);
jbe@205	1488 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205	1489 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205	1490 return 2;
jbe@205	1491 }
jbe@208	1492 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208	1493 lua_pushlightuserdata(L, &sockin[0]);
jbe@208	1494 if (lua_pcall(L, 1, 1, 0)) {
jbe@208	1495 if (sockin[0] != -1) close(sockin[0]);
jbe@208	1496 close(sockout[0]);
jbe@208	1497 close(sockerr[0]);
jbe@208	1498 goto moonbr_io_exec_error2;
jbe@208	1499 }
jbe@205	1500 lua_setfield(L, -2, "stdin");
jbe@208	1501 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208	1502 lua_pushlightuserdata(L, &sockout[0]);
jbe@208	1503 if (lua_pcall(L, 1, 1, 0)) {
jbe@208	1504 if (sockout[0] != -1) close(sockout[0]);
jbe@208	1505 close(sockerr[0]);
jbe@208	1506 goto moonbr_io_exec_error2;
jbe@208	1507 }
jbe@205	1508 lua_setfield(L, -2, "stdout");
jbe@208	1509 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208	1510 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208	1511 if (lua_pcall(L, 1, 1, 0)) {
jbe@208	1512 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208	1513 goto moonbr_io_exec_error2;
jbe@208	1514 }
jbe@205	1515 lua_setfield(L, -2, "stderr");
jbe@205	1516 return 1;
jbe@208	1517 moonbr_io_exec_error2:
jbe@208	1518 {
jbe@208	1519 int status;
jbe@208	1520 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208	1521 if (errno != EINTR) {
jbe@257	1522 moonbr_io_prepare_errmsg();
jbe@208	1523 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208	1524 }
jbe@208	1525 }
jbe@208	1526 }
jbe@208	1527 child->pid = 0;
jbe@208	1528 return lua_error(L);
jbe@205	1529 }
jbe@205	1530
jbe@205	1531 static int moonbr_io_childindex(lua_State *L) {
jbe@205	1532 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205	1533 luaL_checkany(L, 2);
jbe@205	1534 lua_getuservalue(L, 1);
jbe@205	1535 lua_pushvalue(L, 2);
jbe@205	1536 lua_gettable(L, -2);
jbe@205	1537 if (lua_isnil(L, -1)) {
jbe@205	1538 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205	1539 lua_pushvalue(L, 2);
jbe@205	1540 lua_gettable(L, -2);
jbe@205	1541 }
jbe@205	1542 return 1;
jbe@205	1543 }
jbe@205	1544
jbe@205	1545 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205	1546 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205	1547 luaL_checkany(L, 2);
jbe@205	1548 luaL_checkany(L, 3);
jbe@205	1549 lua_getuservalue(L, 1);
jbe@205	1550 lua_pushvalue(L, 2);
jbe@205	1551 lua_pushvalue(L, 3);
jbe@205	1552 lua_settable(L, -3);
jbe@205	1553 return 0;
jbe@205	1554 }
jbe@205	1555
jbe@205	1556 static int moonbr_io_childgc(lua_State *L) {
jbe@205	1557 moonbr_io_child_t *child;
jbe@205	1558 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205	1559 if (child->pid) {
jbe@205	1560 int status;
jbe@281	1561 int pid = child->pid;
jbe@281	1562 child->pid = 0;
jbe@281	1563 if (kill(pid, SIGKILL)) {
jbe@257	1564 moonbr_io_prepare_errmsg();
jbe@205	1565 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205	1566 }
jbe@281	1567 while (waitpid(pid, &status, 0) == -1) {
jbe@205	1568 if (errno != EINTR) {
jbe@257	1569 moonbr_io_prepare_errmsg();
jbe@205	1570 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205	1571 }
jbe@205	1572 }
jbe@205	1573 }
jbe@205	1574 return 0;
jbe@205	1575 }
jbe@205	1576
jbe@205	1577 static int moonbr_io_kill(lua_State *L) {
jbe@205	1578 moonbr_io_child_t *child;
jbe@205	1579 int sig;
jbe@205	1580 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@285	1581 sig = luaL_optinteger(L, 2, SIGKILL);
jbe@303	1582 if (!child->pid) {
jbe@303	1583 if (!child->status_valid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@303	1584 } else {
jbe@303	1585 if (kill(child->pid, sig)) {
jbe@303	1586 moonbr_io_prepare_errmsg();
jbe@303	1587 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@303	1588 }
jbe@205	1589 }
jbe@205	1590 lua_settop(L, 1);
jbe@205	1591 return 1;
jbe@205	1592 }
jbe@205	1593
jbe@205	1594 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205	1595 moonbr_io_child_t *child;
jbe@205	1596 int status;
jbe@205	1597 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@303	1598 if (!child->pid) {
jbe@303	1599 if (!child->status_valid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@303	1600 status = child->status;
jbe@303	1601 child->status_valid = 0;
jbe@303	1602 } else {
jbe@303	1603 pid_t waitedpid;
jbe@303	1604 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@303	1605 if (errno != EINTR) {
jbe@303	1606 moonbr_io_prepare_errmsg();
jbe@303	1607 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303	1608 }
jbe@205	1609 }
jbe@303	1610 if (!waitedpid) {
jbe@303	1611 lua_pushboolean(L, 0);
jbe@303	1612 lua_pushliteral(L, "Process is still running");
jbe@303	1613 return 2;
jbe@303	1614 }
jbe@303	1615 child->pid = 0;
jbe@205	1616 }
jbe@303	1617 if (WIFEXITED(status)) {
jbe@303	1618 lua_pushinteger(L, WEXITSTATUS(status));
jbe@303	1619 } else if (WIFSIGNALED(status)) {
jbe@303	1620 lua_pushinteger(L, -WTERMSIG(status));
jbe@205	1621 } else {
jbe@303	1622 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205	1623 }
jbe@303	1624 return 1;
jbe@205	1625 }
jbe@205	1626
jbe@205	1627 static int moonbr_io_wait(lua_State *L) {
jbe@205	1628 return moonbr_io_wait_impl(L, 0);
jbe@205	1629 }
jbe@205	1630
jbe@205	1631 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205	1632 return moonbr_io_wait_impl(L, 1);
jbe@205	1633 }
jbe@205	1634
jbe@205	1635 #if LUA_VERSION_NUM >= 503
jbe@205	1636 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205	1637 #else
jbe@205	1638 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205	1639 #endif
jbe@205	1640 #if !(LUA_VERSION_NUM >= 503)
jbe@205	1641 int ctx = 0;
jbe@205	1642 lua_getctx(L, &ctx);
jbe@205	1643 #endif
jbe@205	1644 while (1) {
jbe@205	1645 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205	1646 lua_pushvalue(L, 1);
jbe@205	1647 lua_call(L, 1, 1);
jbe@205	1648 if (!lua_isnil(L, -1)) break;
jbe@205	1649 lua_pushvalue(L, 2);
jbe@205	1650 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@205	1651 }
jbe@205	1652 return 1;
jbe@205	1653 }
jbe@205	1654
jbe@205	1655 static int moonbr_io_wait_call(lua_State *L) {
jbe@205	1656 lua_settop(L, 2);
jbe@205	1657 #if LUA_VERSION_NUM >= 503
jbe@205	1658 return moonbr_io_wait_cont(L, 0, 0);
jbe@205	1659 #else
jbe@205	1660 return moonbr_io_wait_cont(L);
jbe@205	1661 #endif
jbe@205	1662 }
jbe@205	1663
jbe@205	1664 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205	1665
jbe@284	1666 static void moonbr_io_sigterm_handler(int sig) {
jbe@284	1667 moonbr_io_sigterm_flag = 1;
jbe@266	1668 }
jbe@266	1669
jbe@297	1670 static void moonbr_io_sigchld_handler(int sig) {
jbe@297	1671 moonbr_io_sigchld_flag = 1;
jbe@297	1672 }
jbe@297	1673
jbe@288	1674 int moonbr_io_catch_sigterm(lua_State *L) {
jbe@284	1675 signal(SIGTERM, moonbr_io_sigterm_handler);
jbe@284	1676 return 0;
jbe@284	1677 }
jbe@284	1678
jbe@266	1679 static int moonbr_io_getpid(lua_State *L) {
jbe@266	1680 lua_pushinteger(L, getpid());
jbe@266	1681 return 1;
jbe@266	1682 }
jbe@266	1683
jbe@250	1684 #ifdef MOONBR_IO_USE_TLS
jbe@258	1685
jbe@250	1686 #define moonbr_io_poll_tls() \
jbe@250	1687 if (!handle->tlshandshake) { \
jbe@295	1688 force_wakeup = 1; \
jbe@295	1689 continue; \
jbe@250	1690 } \
jbe@250	1691 if (handle->tlshandshake == TLS_WANT_POLLIN) { \
jbe@250	1692 if (fd < 0) { \
jbe@295	1693 force_wakeup = 1; \
jbe@295	1694 continue; \
jbe@250	1695 } \
jbe@250	1696 FD_SET(fd, &readfds); \
jbe@250	1697 if (fd+1 > nfds) nfds = fd+1; \
jbe@250	1698 continue; \
jbe@250	1699 } \
jbe@250	1700 if (handle->tlshandshake == TLS_WANT_POLLOUT) { \
jbe@250	1701 if (fd < 0) { \
jbe@295	1702 force_wakeup = 1; \
jbe@295	1703 continue; \
jbe@250	1704 } \
jbe@250	1705 FD_SET(fd, &writefds); \
jbe@250	1706 if (fd+1 > nfds) nfds = fd+1; \
jbe@250	1707 continue; \
jbe@250	1708 } \
jbe@250	1709 while (0)
jbe@258	1710
jbe@258	1711 #endif /* MOONBR_IO_USE_TLS */
jbe@250	1712
jbe@106	1713 static int moonbr_io_poll(lua_State *L) {
jbe@106	1714 moonbr_io_handle_t *handle;
jbe@108	1715 moonbr_io_listener_t *listener;
jbe@296	1716 moonbr_io_child_t *child;
jbe@106	1717 int fd, isnum;
jbe@106	1718 int nfds = 0;
jbe@106	1719 fd_set readfds, writefds, exceptfds;
jbe@284	1720 struct timespec timeout = {0, };
jbe@295	1721 int force_wakeup = 0;
jbe@288	1722 int use_timeout = 0; // negative for negative timeout
jbe@284	1723 int check_sigterm = 0;
jbe@297	1724 int check_sigchld = 0;
jbe@298	1725 pid_t waitedpid;
jbe@284	1726 sigset_t mask, orig_mask;
jbe@106	1727 int status;
jbe@106	1728 FD_ZERO(&readfds);
jbe@106	1729 FD_ZERO(&writefds);
jbe@106	1730 FD_ZERO(&exceptfds);
jbe@106	1731 if (!lua_isnoneornil(L, 1)) {
jbe@106	1732 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106	1733 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106	1734 if (lua_toboolean(L, -1)) {
jbe@106	1735 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106	1736 if (handle) {
jbe@109	1737 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106	1738 fd = handle->fd;
jbe@247	1739 #if MOONBR_IO_USE_TLS
jbe@250	1740 moonbr_io_poll_tls();
jbe@247	1741 #endif
jbe@122	1742 if (
jbe@122	1743 fd < 0 \|\| /* fake EOF to simulate shutdown if fd < 0 */
jbe@122	1744 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122	1745 ) {
jbe@295	1746 force_wakeup = 1;
jbe@295	1747 continue;
jbe@109	1748 }
jbe@106	1749 } else {
jbe@108	1750 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108	1751 if (listener) {
jbe@108	1752 fd = listener->fd;
jbe@108	1753 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108	1754 } else {
jbe@296	1755 child = luaL_testudata(L, -2, MOONBR_IO_CHILD_MT_REGKEY);
jbe@296	1756 if (child) {
jbe@299	1757 if (!child->pid) luaL_error(L, "Attemt to poll an already collected child process");
jbe@297	1758 if (!check_sigchld) {
jbe@297	1759 check_sigchld = 1;
jbe@297	1760 moonbr_io_sigchld_flag = 0;
jbe@297	1761 signal(SIGCHLD, moonbr_io_sigchld_handler);
jbe@297	1762 }
jbe@303	1763 if (child->status_valid) {
jbe@303	1764 force_wakeup = 1;
jbe@303	1765 } else {
jbe@303	1766 while ((waitedpid = waitpid(child->pid, &status, WNOHANG)) == -1) {
jbe@303	1767 if (errno != EINTR) {
jbe@303	1768 moonbr_io_prepare_errmsg();
jbe@303	1769 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303	1770 }
jbe@303	1771 }
jbe@303	1772 if (waitedpid) {
jbe@303	1773 child->pid = 0;
jbe@303	1774 child->status = status;
jbe@303	1775 child->status_valid = 1;
jbe@303	1776 force_wakeup = 1;
jbe@298	1777 }
jbe@298	1778 }
jbe@296	1779 continue;
jbe@296	1780 } else {
jbe@296	1781 fd = lua_tointegerx(L, -2, &isnum);
jbe@296	1782 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@296	1783 }
jbe@108	1784 }
jbe@106	1785 }
jbe@138	1786 if (fd < 0 \|\| fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106	1787 FD_SET(fd, &readfds);
jbe@106	1788 if (fd+1 > nfds) nfds = fd+1;
jbe@106	1789 }
jbe@106	1790 }
jbe@106	1791 }
jbe@106	1792 if (!lua_isnoneornil(L, 2)) {
jbe@106	1793 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106	1794 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106	1795 if (lua_toboolean(L, -1)) {
jbe@106	1796 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106	1797 if (handle) {
jbe@109	1798 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109	1799 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106	1800 fd = handle->fd;
jbe@247	1801 #if MOONBR_IO_USE_TLS
jbe@250	1802 moonbr_io_poll_tls();
jbe@247	1803 #endif
jbe@106	1804 } else {
jbe@108	1805 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109	1806 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109	1807 fd = lua_tointegerx(L, -2, &isnum);
jbe@109	1808 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106	1809 }
jbe@138	1810 if (fd < 0 \|\| fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106	1811 FD_SET(fd, &writefds);
jbe@106	1812 if (fd+1 > nfds) nfds = fd+1;
jbe@106	1813 }
jbe@106	1814 }
jbe@106	1815 }
jbe@106	1816 if (!lua_isnoneornil(L, 3)) {
jbe@106	1817 lua_Number n;
jbe@106	1818 n = lua_tonumberx(L, 3, &isnum);
jbe@146	1819 if (isnum && n<0) {
jbe@288	1820 use_timeout = -1;
jbe@146	1821 } else if (isnum && n>=0 && n<100000000) {
jbe@288	1822 use_timeout = 1;
jbe@106	1823 timeout.tv_sec = n;
jbe@284	1824 timeout.tv_nsec = 1e9 * (n - timeout.tv_sec);
jbe@106	1825 } else {
jbe@106	1826 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106	1827 }
jbe@284	1828 }
jbe@295	1829 if (use_timeout < 0) force_wakeup = 1;
jbe@284	1830 if (!lua_isnoneornil(L, 4)) luaL_checktype(L, 4, LUA_TBOOLEAN);
jbe@284	1831 check_sigterm = lua_toboolean(L, 4);
jbe@297	1832 if ((check_sigterm \|\| check_sigchld) && !force_wakeup) {
jbe@296	1833 sigemptyset(&mask);
jbe@296	1834 if (check_sigterm) sigaddset(&mask, SIGTERM);
jbe@297	1835 if (check_sigchld) sigaddset(&mask, SIGCHLD);
jbe@296	1836 if (sigprocmask(SIG_BLOCK, &mask, &orig_mask)) abort();
jbe@296	1837 }
jbe@296	1838 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295	1839 if (!force_wakeup) {
jbe@296	1840 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@295	1841 }
jbe@296	1842 lua_pushboolean(L, 0);
jbe@296	1843 lua_pushliteral(L, "SIGTERM received");
jbe@296	1844 lua_pushboolean(L, 1);
jbe@296	1845 return 3;
jbe@296	1846 }
jbe@297	1847 if (check_sigchld && !force_wakeup && moonbr_io_sigchld_flag) {
jbe@297	1848 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@297	1849 force_wakeup = 1;
jbe@288	1850 }
jbe@288	1851 if (use_timeout < 0) {
jbe@288	1852 lua_pushboolean(L, 0);
jbe@290	1853 lua_pushliteral(L, "Timeout");
jbe@288	1854 if (check_sigterm) {
jbe@288	1855 lua_pushboolean(L, 0);
jbe@288	1856 return 3;
jbe@288	1857 } else {
jbe@284	1858 return 2;
jbe@284	1859 }
jbe@284	1860 }
jbe@295	1861 if (!force_wakeup) {
jbe@295	1862 status = pselect(
jbe@295	1863 nfds, &readfds, &writefds, &exceptfds,
jbe@295	1864 use_timeout ? &timeout : NULL,
jbe@301	1865 (check_sigterm \|\| check_sigchld) ? &orig_mask : NULL
jbe@295	1866 );
jbe@301	1867 if (check_sigterm \|\| check_sigchld) {
jbe@295	1868 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@301	1869 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295	1870 lua_pushboolean(L, 0);
jbe@295	1871 lua_pushliteral(L, "SIGTERM received");
jbe@295	1872 lua_pushboolean(L, 1);
jbe@295	1873 return 3;
jbe@295	1874 }
jbe@295	1875 }
jbe@295	1876 if (status == -1) {
jbe@295	1877 if (errno == EINTR) {
jbe@295	1878 lua_pushboolean(L, 1);
jbe@295	1879 return 1;
jbe@295	1880 } else {
jbe@295	1881 moonbr_io_prepare_errmsg();
jbe@295	1882 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@295	1883 }
jbe@295	1884 } else if (status == 0) {
jbe@292	1885 lua_pushboolean(L, 0);
jbe@295	1886 lua_pushliteral(L, "Timeout");
jbe@295	1887 if (check_sigterm) {
jbe@295	1888 lua_pushboolean(L, 0);
jbe@295	1889 return 3;
jbe@295	1890 } else {
jbe@295	1891 return 2;
jbe@295	1892 }
jbe@292	1893 }
jbe@106	1894 }
jbe@295	1895 lua_pushboolean(L, 1);
jbe@295	1896 return 1;
jbe@106	1897 }
jbe@106	1898
jbe@115	1899 static int moonbr_io_timeref(lua_State *L) {
jbe@115	1900 lua_Number sub;
jbe@115	1901 struct timespec tp;
jbe@115	1902 sub = luaL_optnumber(L, 1, 0);
jbe@115	1903 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115	1904 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115	1905 }
jbe@115	1906 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115	1907 return 1;
jbe@115	1908 }
jbe@115	1909
jbe@243	1910 #ifdef MOONBR_IO_USE_TLS
jbe@243	1911
jbe@243	1912 #define moonbr_io_tlsconf_string(name, field, func) \
jbe@243	1913 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243	1914 lua_getfield(L, 1, (field)); \
jbe@243	1915 valuetype = lua_type(L, -1); \
jbe@243	1916 if (valuetype != LUA_TNIL) { \
jbe@243	1917 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243	1918 value = lua_tostring(L, -1); \
jbe@252	1919 if (func(tlsconf->config, value)) { \
jbe@243	1920 lua_pushnil(L); \
jbe@243	1921 lua_pushfstring(L, "Could not set " name " \"%s\"", value); \
jbe@243	1922 return 2; \
jbe@243	1923 } \
jbe@243	1924 } \
jbe@243	1925 lua_pop(L, 1);
jbe@243	1926
jbe@243	1927 #define moonbr_io_tlsconf_binary(name, field, func) \
jbe@243	1928 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243	1929 lua_getfield(L, 1, (field)); \
jbe@243	1930 valuetype = lua_type(L, -1); \
jbe@243	1931 if (valuetype != LUA_TNIL) { \
jbe@243	1932 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243	1933 value = lua_tolstring(L, -1, &valuelen); \
jbe@252	1934 if (func(tlsconf->config, (void *)value, valuelen)) { \
jbe@243	1935 lua_pushnil(L); \
jbe@243	1936 lua_pushliteral(L, "Could not set " name); \
jbe@243	1937 return 2; \
jbe@243	1938 } \
jbe@243	1939 } \
jbe@243	1940 lua_pop(L, 1);
jbe@243	1941
jbe@243	1942 static int moonbr_io_tlsconf(lua_State *L) {
jbe@252	1943 moonbr_io_tlsconf_t *tlsconf;
jbe@243	1944 int valuetype;
jbe@243	1945 const char *value;
jbe@243	1946 size_t valuelen;
jbe@243	1947 luaL_checktype(L, 1, LUA_TTABLE);
jbe@252	1948 tlsconf = lua_newuserdata(L, sizeof(moonbr_io_tlsconf_t));
jbe@252	1949 tlsconf->config = tls_config_new();
jbe@252	1950 if (!tlsconf->config) {
jbe@243	1951 return luaL_error(L, "Could not allocate memory for TLS configuration");
jbe@243	1952 }
jbe@243	1953 luaL_setmetatable(L, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@245	1954 lua_getfield(L, 1, "mode");
jbe@252	1955 value = lua_tostring(L, -1);
jbe@252	1956 if (value && !strcmp(value, "server")) tlsconf->server = 1;
jbe@252	1957 else if (value && !strcmp(value, "client")) tlsconf->server = 0;
jbe@252	1958 else luaL_argcheck(L, 0, 1, "field \"mode\" must be set to \"server\" or \"client\"");
jbe@245	1959 lua_pop(L, 1);
jbe@243	1960 moonbr_io_tlsconf_string("CA file", "ca_file", tls_config_set_ca_file);
jbe@243	1961 moonbr_io_tlsconf_string("CA path", "ca_path", tls_config_set_ca_path);
jbe@243	1962 moonbr_io_tlsconf_binary("CA", "ca_mem", tls_config_set_ca_mem);
jbe@243	1963 moonbr_io_tlsconf_string("certificate file", "cert_file", tls_config_set_cert_file);
jbe@243	1964 moonbr_io_tlsconf_binary("certificate", "cert_mem", tls_config_set_cert_mem);
jbe@243	1965 moonbr_io_tlsconf_string("key file", "key_file", tls_config_set_key_file);
jbe@243	1966 moonbr_io_tlsconf_binary("key", "key_mem", tls_config_set_key_mem);
jbe@245	1967 #if LUA_VERSION_NUM >= 503
jbe@245	1968 valuetype = lua_getfield(L, 1, "verify_client");
jbe@245	1969 #else
jbe@244	1970 lua_getfield(L, 1, "verify_client");
jbe@245	1971 #endif
jbe@244	1972 if (lua_toboolean(L, -1)) {
jbe@252	1973 value = lua_tostring(L, -1);
jbe@252	1974 if (value && !strcmp(value, "required")) {
jbe@252	1975 tls_config_verify_client(tlsconf->config);
jbe@252	1976 } else if (value && !strcmp(value, "optional")) {
jbe@252	1977 tls_config_verify_client_optional(tlsconf->config);
jbe@244	1978 } else {
jbe@244	1979 luaL_argcheck(L, 0, 1, "field \"verify_client\" must be set to \"required\", \"optional\", or be false or nil");
jbe@244	1980 }
jbe@244	1981 }
jbe@244	1982 lua_pop(L, 1);
jbe@254	1983 // TODO: configurable legacy support
jbe@254	1984 // tls_config_set_protocols(tlsconf->config, TLS_PROTOCOLS_ALL);
jbe@254	1985 // tls_config_set_ciphers(tlsconf->config, "legacy");
jbe@243	1986 return 1;
jbe@243	1987 }
jbe@243	1988
jbe@252	1989 static int moonbr_io_tlsconfgc(lua_State *L) {
jbe@252	1990 moonbr_io_tlsconf_t *tlsconf;
jbe@243	1991 tlsconf = luaL_checkudata(L, 1, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@252	1992 if (tlsconf->config) tls_config_free(tlsconf->config);
jbe@252	1993 tlsconf->config = NULL;
jbe@243	1994 return 0;
jbe@243	1995 }
jbe@243	1996
jbe@246	1997 static int moonbr_io_starttls(lua_State *L) {
jbe@246	1998 moonbr_io_handle_t *handle;
jbe@252	1999 moonbr_io_tlsconf_t *tlsconf;
jbe@246	2000 const char *servername;
jbe@246	2001 struct tls tls, tls2;
jbe@246	2002 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@246	2003 if (lua_type(L, 2) == LUA_TTABLE) {
jbe@246	2004 lua_pushcfunction(L, moonbr_io_tlsconf);
jbe@246	2005 lua_pushvalue(L, 2);
jbe@246	2006 lua_call(L, 1, 2);
jbe@246	2007 if (lua_isnil(L, -2)) return 2;
jbe@246	2008 lua_pop(L, 1);
jbe@246	2009 lua_replace(L, 2);
jbe@246	2010 }
jbe@246	2011 tlsconf = luaL_checkudata(L, 2, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@246	2012 if (handle->closed) return luaL_error(L, "Attempt to start TLS on a closed I/O handle");
jbe@246	2013 if (handle->finished) return luaL_error(L, "Attempt to start TLS on a finished I/O handle");
jbe@247	2014 if (handle->tls) return luaL_error(L, "Attempt to start TLS twice");
jbe@246	2015 if (handle->readbufin \|\| handle->writebufin) {
jbe@246	2016 return luaL_error(L, "Attempt to start TLS on an I/O handle with non-empty buffers");
jbe@246	2017 }
jbe@252	2018 if (tlsconf->server) tls = tls_server();
jbe@252	2019 else {
jbe@246	2020 servername = luaL_checkstring(L, 3);
jbe@246	2021 tls = tls_client();
jbe@246	2022 }
jbe@246	2023 if (!tls) {
jbe@246	2024 return luaL_error(L, "Could not allocate memory for TLS context");
jbe@246	2025 }
jbe@252	2026 if (tls_configure(tls, tlsconf->config)) goto moonbr_io_starttls_error;
jbe@252	2027 if (tlsconf->server) {
jbe@246	2028 if (tls_accept_socket(tls, &tls2, handle->fd)) goto moonbr_io_starttls_error;
jbe@246	2029 handle->servertls = tls;
jbe@246	2030 handle->tls = tls2;
jbe@246	2031 } else {
jbe@246	2032 if (tls_connect_socket(tls, handle->fd, servername)) goto moonbr_io_starttls_error;
jbe@246	2033 handle->tls = tls;
jbe@246	2034 }
jbe@246	2035 lua_settop(L, 1);
jbe@246	2036 return 1;
jbe@246	2037 moonbr_io_starttls_error:
jbe@246	2038 lua_pushnil(L);
jbe@246	2039 lua_pushstring(L, tls_error(tls));
jbe@246	2040 tls_free(tls);
jbe@246	2041 return 2;
jbe@246	2042 }
jbe@246	2043
jbe@258	2044 #endif /* MOONBR_IO_USE_TLS */
jbe@243	2045
jbe@79	2046 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85	2047 {"read", moonbr_io_read},
jbe@85	2048 {"read_nb", moonbr_io_read_nb},
jbe@140	2049 {"read_call", moonbr_io_read_call},
jbe@140	2050 {"read_yield", moonbr_io_read_yield},
jbe@86	2051 {"drain", moonbr_io_drain},
jbe@86	2052 {"drain_nb", moonbr_io_drain_nb},
jbe@144	2053 {"drain_call", moonbr_io_drain_call},
jbe@144	2054 {"drain_yield", moonbr_io_drain_yield},
jbe@80	2055 {"write", moonbr_io_write},
jbe@81	2056 {"write_nb", moonbr_io_write_nb},
jbe@145	2057 {"write_call", moonbr_io_write_call},
jbe@145	2058 {"write_yield", moonbr_io_write_yield},
jbe@80	2059 {"flush", moonbr_io_flush},
jbe@81	2060 {"flush_nb", moonbr_io_flush_nb},
jbe@145	2061 {"flush_call", moonbr_io_flush_call},
jbe@145	2062 {"flush_yield", moonbr_io_flush_yield},
jbe@88	2063 {"finish", moonbr_io_finish},
jbe@87	2064 {"close", moonbr_io_close},
jbe@85	2065 {"reset", moonbr_io_reset},
jbe@246	2066 #ifdef MOONBR_IO_USE_TLS
jbe@246	2067 {"starttls", moonbr_io_starttls},
jbe@246	2068 #endif
jbe@79	2069 {NULL, NULL}
jbe@79	2070 };
jbe@79	2071
jbe@79	2072 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79	2073 {"__index", moonbr_io_handleindex},
jbe@79	2074 {"__newindex", moonbr_io_handlenewindex},
jbe@108	2075 {"__gc", moonbr_io_handlegc},
jbe@108	2076 {NULL, NULL}
jbe@108	2077 };
jbe@108	2078
jbe@108	2079 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108	2080 {"accept", moonbr_io_accept},
jbe@108	2081 {"accept_nb", moonbr_io_accept_nb},
jbe@108	2082 {"close", moonbr_io_unlisten},
jbe@108	2083 {NULL, NULL}
jbe@108	2084 };
jbe@108	2085
jbe@108	2086 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108	2087 {"__gc", moonbr_io_listenergc},
jbe@79	2088 {NULL, NULL}
jbe@79	2089 };
jbe@79	2090
jbe@205	2091 static const struct luaL_Reg moonbr_io_child_methods[] = {
jbe@205	2092 {"kill", moonbr_io_kill},
jbe@205	2093 {"wait", moonbr_io_wait},
jbe@205	2094 {"wait_nb", moonbr_io_wait_nb},
jbe@205	2095 {"wait_call", moonbr_io_wait_call},
jbe@205	2096 {"wait_yield", moonbr_io_wait_yield},
jbe@205	2097 {NULL, NULL}
jbe@205	2098 };
jbe@205	2099
jbe@205	2100 static const struct luaL_Reg moonbr_io_child_metamethods[] = {
jbe@205	2101 {"__index", moonbr_io_childindex},
jbe@205	2102 {"__newindex", moonbr_io_childnewindex},
jbe@205	2103 {"__gc", moonbr_io_childgc},
jbe@205	2104 {NULL, NULL}
jbe@205	2105 };
jbe@205	2106
jbe@79	2107 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111	2108 {"localconnect", moonbr_io_localconnect},
jbe@111	2109 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98	2110 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99	2111 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112	2112 {"locallisten", moonbr_io_locallisten},
jbe@108	2113 {"tcplisten", moonbr_io_tcplisten},
jbe@205	2114 {"exec", moonbr_io_exec},
jbe@288	2115 {"catch_sigterm", moonbr_io_catch_sigterm},
jbe@266	2116 {"getpid", moonbr_io_getpid},
jbe@106	2117 {"poll", moonbr_io_poll},
jbe@115	2118 {"timeref", moonbr_io_timeref},
jbe@243	2119 #ifdef MOONBR_IO_USE_TLS
jbe@243	2120 {"tlsconf", moonbr_io_tlsconf},
jbe@243	2121 #endif
jbe@79	2122 {NULL, NULL}
jbe@79	2123 };
jbe@79	2124
jbe@243	2125 #ifdef MOONBR_IO_USE_TLS
jbe@258	2126
jbe@243	2127 static const struct luaL_Reg moonbr_io_tlsconf_metamethods[] = {
jbe@243	2128 {"__gc", moonbr_io_tlsconfgc},
jbe@243	2129 {NULL, NULL}
jbe@243	2130 };
jbe@258	2131
jbe@258	2132 #endif /* MOONBR_IO_USE_TLS */
jbe@243	2133
jbe@79	2134 int luaopen_moonbridge_io(lua_State *L) {
jbe@79	2135
jbe@113	2136 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113	2137
jbe@80	2138 lua_newtable(L); // module
jbe@313	2139 lua_pushvalue(L, -1);
jbe@313	2140 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@80	2141
jbe@79	2142 lua_newtable(L); // public metatable
jbe@79	2143 lua_newtable(L); // handle methods
jbe@79	2144 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80	2145 lua_pushvalue(L, -1);
jbe@146	2146 lua_setfield(L, -4, "handle_pt");
jbe@79	2147 lua_setfield(L, -2, "__index");
jbe@79	2148 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79	2149
jbe@79	2150 lua_newtable(L); // handle metatable
jbe@79	2151 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146	2152 lua_pushvalue(L, -1);
jbe@146	2153 lua_setfield(L, -3, "handle_mt");
jbe@79	2154 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79	2155
jbe@108	2156 lua_newtable(L); // listener metatable
jbe@108	2157 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108	2158 lua_newtable(L); // listener methods
jbe@108	2159 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108	2160 lua_pushvalue(L, -1);
jbe@146	2161 lua_setfield(L, -4, "listener_pt");
jbe@108	2162 lua_setfield(L, -2, "__index");
jbe@146	2163 lua_pushvalue(L, -1);
jbe@146	2164 lua_setfield(L, -3, "listener_mt");
jbe@108	2165 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108	2166
jbe@205	2167 lua_newtable(L); // child methods
jbe@205	2168 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205	2169 lua_pushvalue(L, -1);
jbe@205	2170 lua_setfield(L, -3, "child_pt");
jbe@205	2171 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205	2172 lua_newtable(L); // child metatable
jbe@205	2173 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205	2174 lua_pushvalue(L, -1);
jbe@205	2175 lua_setfield(L, -3, "child_mt");
jbe@205	2176 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205	2177
jbe@243	2178 #ifdef MOONBR_IO_USE_TLS
jbe@243	2179 if(tls_init()) {
jbe@243	2180 return luaL_error(L, "Could not initialize TLS library");
jbe@243	2181 }
jbe@243	2182 lua_newtable(L); // tlsconf metatable
jbe@243	2183 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243	2184 lua_pushvalue(L, -1);
jbe@243	2185 lua_setfield(L, -3, "tlsconf_mt");
jbe@243	2186 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243	2187 #endif
jbe@243	2188
jbe@205	2189 moonbr_io_pushhandle(L, 0);
jbe@205	2190 lua_setfield(L, -2, "stdin");
jbe@205	2191 moonbr_io_pushhandle(L, 1);
jbe@205	2192 lua_setfield(L, -2, "stdout");
jbe@205	2193 moonbr_io_pushhandle(L, 2);
jbe@205	2194 lua_setfield(L, -2, "stderr");
jbe@270	2195
jbe@79	2196 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79	2197 return 1;
jbe@79	2198
jbe@79	2199 }
jbe@79	2200