moonbridge

annotate moonbridge_io.c @ 145:bd88dfa4f294

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Yielding write and flush methods for I/O
author jbe
date Sat May 02 16:25:33 2015 +0200 (2015-05-02)
parents e7fac0918f9c
children 6dfe5b424b18
rev   line source
jbe@79 1
jbe@137 2 #if defined(__linux__)
jbe@137 3 #define _GNU_SOURCE
jbe@137 4 #endif
jbe@79 5 #include <stdlib.h>
jbe@135 6 #include <stdint.h>
jbe@135 7 #include <string.h>
jbe@135 8 #include <errno.h>
jbe@79 9 #include <unistd.h>
jbe@135 10 #include <signal.h>
jbe@135 11 #include <fcntl.h>
jbe@135 12 #include <sys/stat.h>
jbe@79 13 #include <sys/socket.h>
jbe@111 14 #include <sys/un.h>
jbe@95 15 #include <netinet/in.h>
jbe@95 16 #include <netinet/tcp.h>
jbe@135 17 #include <sys/select.h>
jbe@136 18 #include <time.h>
jbe@135 19 #include <netdb.h>
jbe@107 20 #include <arpa/inet.h>
jbe@79 21
jbe@79 22 #include <lua.h>
jbe@79 23 #include <lauxlib.h>
jbe@79 24 #include <lualib.h>
jbe@79 25
jbe@80 26 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 27 #define MOONBR_IO_READBUFLEN 4096
jbe@80 28 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 29
jbe@108 30 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 31
jbe@80 32 #define moonbr_io_errmsg() \
jbe@80 33 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 34 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 35
jbe@79 36 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 37 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 38 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 39
jbe@79 40 typedef struct {
jbe@79 41 int fd;
jbe@107 42 int issock;
jbe@107 43 sa_family_t addrfam;
jbe@94 44 int finished;
jbe@94 45 int closed;
jbe@81 46 int nonblocking;
jbe@95 47 int nopush;
jbe@85 48 int readerr;
jbe@105 49 int readbufin;
jbe@105 50 int readbufout;
jbe@81 51 int writeerr;
jbe@83 52 size_t writeleft;
jbe@132 53 size_t flushedleft;
jbe@83 54 #if LUA_VERSION_NUM >= 503
jbe@83 55 lua_Integer writeqin;
jbe@83 56 lua_Integer writeqout;
jbe@83 57 #else
jbe@83 58 int writeqin;
jbe@83 59 int writeqout;
jbe@83 60 #endif
jbe@83 61 size_t writeqoff;
jbe@103 62 int writebufin;
jbe@103 63 int writebufout;
jbe@85 64 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 65 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 66 } moonbr_io_handle_t;
jbe@79 67
jbe@108 68 typedef struct {
jbe@108 69 int fd;
jbe@118 70 sa_family_t addrfam;
jbe@108 71 int nonblocking;
jbe@108 72 } moonbr_io_listener_t;
jbe@108 73
jbe@140 74 static int moonbr_io_yield(lua_State *L) {
jbe@140 75 return lua_yield(L, 0);
jbe@140 76 }
jbe@140 77
jbe@140 78 #if LUA_VERSION_NUM >= 503
jbe@140 79 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 80 #else
jbe@140 81 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 82 #endif
jbe@140 83 return lua_gettop(L);
jbe@140 84 }
jbe@140 85
jbe@145 86 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 87 static int yieldfunc(lua_State *L) { \
jbe@145 88 int args; \
jbe@145 89 lua_pushcfunction(L, callfunc); \
jbe@145 90 lua_insert(L, 1); \
jbe@145 91 args = lua_gettop(L); \
jbe@145 92 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 93 lua_insert(L, 3); \
jbe@145 94 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 95 return lua_gettop(L); \
jbe@145 96 }
jbe@145 97
jbe@81 98 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 99 int flags;
jbe@95 100 if (handle->nonblocking == nonblocking) return;
jbe@95 101 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 102 if (flags == -1) {
jbe@95 103 moonbr_io_errmsg();
jbe@96 104 close(handle->fd);
jbe@96 105 handle->fd = -1;
jbe@96 106 handle->closed = 1;
jbe@95 107 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 108 }
jbe@95 109 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 110 else flags &= ~O_NONBLOCK;
jbe@95 111 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 112 moonbr_io_errmsg();
jbe@96 113 close(handle->fd);
jbe@96 114 handle->fd = -1;
jbe@96 115 handle->closed = 1;
jbe@95 116 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 117 }
jbe@95 118 handle->nonblocking = nonblocking;
jbe@81 119 }
jbe@81 120
jbe@87 121 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 122 struct linger lingerval = { 0, };
jbe@107 123 if (!handle->issock) return;
jbe@87 124 if (timeout >= 0) {
jbe@87 125 lingerval.l_onoff = 1;
jbe@87 126 lingerval.l_linger = timeout;
jbe@87 127 }
jbe@87 128 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 129 moonbr_io_errmsg();
jbe@96 130 close(handle->fd);
jbe@96 131 handle->fd = -1;
jbe@96 132 handle->closed = 1;
jbe@95 133 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 134 }
jbe@87 135 }
jbe@87 136
jbe@133 137 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 138 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 139 if (
jbe@107 140 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 141 handle->nopush == nopush
jbe@107 142 ) return;
jbe@96 143 #if defined(TCP_NOPUSH)
jbe@96 144 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 145 #elif defined(TCP_CORK)
jbe@104 146 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 147 #endif
jbe@96 148 moonbr_io_errmsg();
jbe@96 149 close(handle->fd);
jbe@96 150 handle->fd = -1;
jbe@96 151 handle->closed = 1;
jbe@104 152 #if defined(TCP_NOPUSH)
jbe@96 153 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 154 #elif defined(TCP_CORK)
jbe@95 155 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 156 #endif
jbe@95 157 }
jbe@95 158 handle->nopush = nopush;
jbe@96 159 #else
jbe@96 160 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 161 #endif
jbe@95 162 }
jbe@95 163
jbe@86 164 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 165 moonbr_io_handle_t *handle;
jbe@85 166 lua_Integer maxread;
jbe@85 167 const char *terminatorstr;
jbe@85 168 size_t terminatorlen;
jbe@137 169 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 170 luaL_Buffer luabuf;
jbe@85 171 size_t luabufcnt = 0;
jbe@105 172 int remaining;
jbe@85 173 char *terminatorpos;
jbe@103 174 ssize_t bytesread;
jbe@85 175 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 176 maxread = luaL_optinteger(L, 2, 0);
jbe@85 177 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 178 if (terminatorlen) {
jbe@85 179 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 180 terminator = terminatorstr[0];
jbe@85 181 }
jbe@86 182 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 183 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 184 if (handle->readerr) {
jbe@85 185 lua_pushnil(L);
jbe@85 186 lua_pushliteral(L, "Previous read error");
jbe@85 187 return 2;
jbe@85 188 }
jbe@143 189 if (handle->fd < 0) {
jbe@143 190 /* fake EOF to simulate shutdown */
jbe@143 191 if (!drain) lua_pushliteral(L, "");
jbe@143 192 else lua_pushinteger(L, 0);
jbe@143 193 lua_pushliteral(L, "eof");
jbe@143 194 return 2;
jbe@143 195 }
jbe@105 196 handle->readerr = 1;
jbe@85 197 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 198 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 199 while (1) {
jbe@105 200 remaining = -1;
jbe@142 201 terminatorpos = NULL;
jbe@105 202 if (
jbe@105 203 maxread > 0 &&
jbe@143 204 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 205 ) {
jbe@142 206 remaining = (size_t)maxread - luabufcnt;
jbe@142 207 terminatorpos = memchr(
jbe@142 208 handle->readbuf + handle->readbufout,
jbe@142 209 terminator,
jbe@142 210 remaining
jbe@142 211 );
jbe@85 212 } else if (terminatorlen) {
jbe@105 213 terminatorpos = memchr(
jbe@105 214 handle->readbuf + handle->readbufout,
jbe@105 215 terminator,
jbe@105 216 handle->readbufin - handle->readbufout
jbe@105 217 );
jbe@85 218 }
jbe@142 219 if (terminatorpos) remaining = 1 + (
jbe@142 220 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 221 );
jbe@105 222 if (remaining >= 0) {
jbe@86 223 if (!drain) {
jbe@105 224 luaL_addlstring(
jbe@105 225 &luabuf,
jbe@105 226 handle->readbuf + handle->readbufout,
jbe@105 227 remaining
jbe@105 228 );
jbe@86 229 luaL_pushresult(&luabuf);
jbe@90 230 } else {
jbe@105 231 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 232 }
jbe@143 233 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 234 else lua_pushliteral(L, "maxlen");
jbe@105 235 handle->readbufout += remaining;
jbe@105 236 if (handle->readbufout == handle->readbufin) {
jbe@105 237 handle->readbufin = 0;
jbe@143 238 handle->readbufout = 0;
jbe@105 239 }
jbe@104 240 handle->readerr = 0;
jbe@143 241 return 2;
jbe@85 242 }
jbe@105 243 if (!drain) luaL_addlstring(
jbe@105 244 &luabuf,
jbe@105 245 handle->readbuf + handle->readbufout,
jbe@105 246 handle->readbufin - handle->readbufout
jbe@105 247 );
jbe@105 248 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 249 handle->readbufout = 0;
jbe@85 250 do {
jbe@103 251 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 252 } while (bytesread < 0 && (errno == EINTR));
jbe@105 253 if (
jbe@105 254 bytesread == 0 || (
jbe@105 255 nonblocking &&
jbe@105 256 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 257 )
jbe@105 258 ) {
jbe@105 259 handle->readbufin = 0;
jbe@143 260 if (!drain) luaL_pushresult(&luabuf);
jbe@143 261 else lua_pushinteger(L, luabufcnt);
jbe@143 262 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 263 else lua_pushliteral(L, "block");
jbe@105 264 handle->readerr = 0;
jbe@143 265 return 2;
jbe@105 266 }
jbe@103 267 if (bytesread < 0) {
jbe@85 268 moonbr_io_errmsg();
jbe@85 269 lua_pushnil(L);
jbe@85 270 lua_pushstring(L, errmsg);
jbe@85 271 return 2;
jbe@85 272 }
jbe@105 273 handle->readbufin = bytesread;
jbe@86 274 }
jbe@85 275 }
jbe@85 276
jbe@85 277 static int moonbr_io_read(lua_State *L) {
jbe@86 278 return moonbr_io_read_impl(L, 0, 0);
jbe@85 279 }
jbe@85 280
jbe@85 281 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 282 return moonbr_io_read_impl(L, 1, 0);
jbe@86 283 }
jbe@86 284
jbe@86 285 static int moonbr_io_drain(lua_State *L) {
jbe@86 286 return moonbr_io_read_impl(L, 0, 1);
jbe@86 287 }
jbe@86 288
jbe@86 289 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 290 return moonbr_io_read_impl(L, 1, 1);
jbe@85 291 }
jbe@85 292
jbe@140 293 #if LUA_VERSION_NUM >= 503
jbe@140 294 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 295 #else
jbe@140 296 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 297 #endif
jbe@143 298 lua_Integer remaining;
jbe@143 299 size_t len;
jbe@140 300 #if !(LUA_VERSION_NUM >= 503)
jbe@140 301 int ctx = 0;
jbe@140 302 lua_getctx(L, &ctx);
jbe@140 303 #endif
jbe@140 304 remaining = lua_tointeger(L, 3);
jbe@140 305 while (1) {
jbe@140 306 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 307 lua_pushvalue(L, 1);
jbe@140 308 lua_pushvalue(L, 3);
jbe@140 309 lua_pushvalue(L, 4);
jbe@140 310 lua_call(L, 3, 2);
jbe@143 311 if (lua_isnil(L, -2)) return 2;
jbe@143 312 lua_insert(L, -2);
jbe@143 313 len = lua_rawlen(L, -1);
jbe@143 314 if (ctx == 0) {
jbe@143 315 lua_replace(L, 5);
jbe@143 316 ctx = 1;
jbe@143 317 } else if (ctx == 1) {
jbe@143 318 lua_pushvalue(L, 5);
jbe@143 319 lua_newtable(L);
jbe@143 320 lua_replace(L, 5);
jbe@143 321 lua_rawseti(L, 5, 2);
jbe@143 322 lua_rawseti(L, 5, 1);
jbe@143 323 ctx = 2;
jbe@140 324 } else {
jbe@143 325 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 326 }
jbe@144 327 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 328 lua_pop(L, 1);
jbe@144 329 if (remaining >= 0 && len) {
jbe@143 330 remaining -= len;
jbe@143 331 lua_pushinteger(L, remaining);
jbe@143 332 lua_replace(L, 3);
jbe@143 333 }
jbe@140 334 lua_pushvalue(L, 2);
jbe@140 335 lua_pushvalue(L, 1);
jbe@140 336 lua_pushliteral(L, "r");
jbe@140 337 lua_callk(L, 2, 0, ctx, moonbr_io_read_cont);
jbe@140 338 }
jbe@140 339 if (ctx == 1) {
jbe@140 340 lua_pushvalue(L, 5);
jbe@140 341 } else {
jbe@140 342 luaL_Buffer buf;
jbe@140 343 lua_Integer i, chunkcount;
jbe@140 344 chunkcount = lua_rawlen(L, 5);
jbe@140 345 luaL_buffinit(L, &buf);
jbe@140 346 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 347 lua_rawgeti(L, 5, i);
jbe@140 348 luaL_addvalue(&buf);
jbe@140 349 }
jbe@140 350 luaL_pushresult(&buf);
jbe@140 351 }
jbe@143 352 lua_pushvalue(L, -2);
jbe@143 353 return 2;
jbe@140 354 }
jbe@140 355
jbe@140 356 static int moonbr_io_read_call(lua_State *L) {
jbe@140 357 lua_settop(L, 4);
jbe@140 358 lua_pushnil(L);
jbe@140 359 #if LUA_VERSION_NUM >= 503
jbe@140 360 return moonbr_io_read_cont(L, 0, 0);
jbe@140 361 #else
jbe@140 362 return moonbr_io_read_cont(L);
jbe@140 363 #endif
jbe@140 364 }
jbe@140 365
jbe@145 366 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 367
jbe@144 368 #if LUA_VERSION_NUM >= 503
jbe@144 369 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 370 #else
jbe@144 371 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 372 #endif
jbe@144 373 lua_Integer remaining, len;
jbe@144 374 size_t totallen = 0;
jbe@144 375 #if !(LUA_VERSION_NUM >= 503)
jbe@144 376 int ctx = 0;
jbe@144 377 lua_getctx(L, &ctx);
jbe@144 378 #endif
jbe@144 379 remaining = lua_tointeger(L, 3);
jbe@144 380 while (1) {
jbe@144 381 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 382 lua_pushvalue(L, 1);
jbe@144 383 lua_pushvalue(L, 3);
jbe@144 384 lua_pushvalue(L, 4);
jbe@144 385 lua_call(L, 3, 2);
jbe@144 386 if (lua_isnil(L, -2)) return 2;
jbe@144 387 lua_insert(L, -2);
jbe@144 388 len = lua_tointeger(L, -1);
jbe@144 389 lua_pop(L, 1);
jbe@144 390 totallen += len;
jbe@144 391 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 392 lua_pop(L, 1);
jbe@144 393 if (remaining >= 0 && len) {
jbe@144 394 remaining -= len;
jbe@144 395 lua_pushinteger(L, remaining);
jbe@144 396 lua_replace(L, 3);
jbe@144 397 }
jbe@144 398 lua_pushvalue(L, 2);
jbe@144 399 lua_pushvalue(L, 1);
jbe@144 400 lua_pushliteral(L, "r");
jbe@144 401 lua_callk(L, 2, 0, ctx, moonbr_io_drain_cont);
jbe@144 402 }
jbe@144 403 lua_pushinteger(L, totallen);
jbe@144 404 lua_pushvalue(L, -2);
jbe@144 405 return 2;
jbe@144 406 }
jbe@144 407
jbe@144 408 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 409 #if LUA_VERSION_NUM >= 503
jbe@144 410 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 411 #else
jbe@144 412 return moonbr_io_drain_cont(L);
jbe@144 413 #endif
jbe@144 414 }
jbe@144 415
jbe@145 416 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 417
jbe@81 418 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 419 moonbr_io_handle_t *handle;
jbe@80 420 int i, top;
jbe@80 421 const char *str;
jbe@92 422 size_t strlen;
jbe@103 423 ssize_t written;
jbe@80 424 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 425 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 426 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 427 if (handle->writeerr) {
jbe@80 428 lua_pushnil(L);
jbe@80 429 lua_pushliteral(L, "Previous write error");
jbe@80 430 return 2;
jbe@80 431 }
jbe@103 432 handle->writeerr = 1;
jbe@81 433 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 434 top = lua_gettop(L);
jbe@81 435 lua_getuservalue(L, 1);
jbe@103 436 lua_getfield(L, -1, "writequeue");
jbe@84 437 for (i=2; i<=top; i++) {
jbe@84 438 luaL_checklstring(L, i, &strlen);
jbe@84 439 lua_pushvalue(L, i);
jbe@84 440 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 441 handle->writeleft += strlen;
jbe@81 442 }
jbe@132 443 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 444 while (handle->writeqout != handle->writeqin) {
jbe@83 445 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 446 str = lua_tolstring(L, -1, &strlen);
jbe@92 447 while (handle->writeqoff < strlen) {
jbe@103 448 if (
jbe@132 449 strlen - handle->writeqoff <
jbe@103 450 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 451 ) {
jbe@103 452 memcpy(
jbe@103 453 handle->writebuf + handle->writebufin,
jbe@103 454 str + handle->writeqoff,
jbe@103 455 strlen - handle->writeqoff
jbe@103 456 );
jbe@103 457 handle->writebufin += strlen - handle->writeqoff;
jbe@80 458 break;
jbe@80 459 } else {
jbe@103 460 memcpy(
jbe@103 461 handle->writebuf + handle->writebufin,
jbe@103 462 str + handle->writeqoff,
jbe@103 463 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 464 );
jbe@103 465 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 466 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 467 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 468 written = write(
jbe@103 469 handle->fd,
jbe@103 470 handle->writebuf + handle->writebufout,
jbe@103 471 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 472 );
jbe@103 473 if (written < 0) {
jbe@81 474 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 475 goto moonbr_io_write_impl_block;
jbe@81 476 } else if (errno != EINTR) {
jbe@80 477 moonbr_io_errmsg();
jbe@80 478 lua_pushnil(L);
jbe@80 479 lua_pushstring(L, errmsg);
jbe@80 480 return 2;
jbe@80 481 }
jbe@103 482 } else {
jbe@103 483 handle->writebufout += written;
jbe@103 484 handle->writeleft -= written;
jbe@133 485 if (handle->flushedleft) {
jbe@133 486 if (written >= handle->flushedleft) {
jbe@133 487 handle->flushedleft = 0;
jbe@133 488 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 489 } else {
jbe@133 490 handle->flushedleft -= written;
jbe@133 491 }
jbe@133 492 }
jbe@80 493 }
jbe@80 494 }
jbe@103 495 handle->writebufin = 0;
jbe@103 496 handle->writebufout = 0;
jbe@80 497 }
jbe@80 498 }
jbe@81 499 handle->writeqoff = 0;
jbe@81 500 lua_pop(L, 1);
jbe@81 501 lua_pushnil(L);
jbe@83 502 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 503 }
jbe@132 504 while (handle->flushedleft) {
jbe@133 505 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 506 written = write(
jbe@132 507 handle->fd,
jbe@132 508 handle->writebuf + handle->writebufout,
jbe@132 509 handle->writebufin - handle->writebufout
jbe@132 510 );
jbe@132 511 if (written < 0) {
jbe@132 512 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 513 goto moonbr_io_write_impl_block;
jbe@132 514 } else if (errno != EINTR) {
jbe@132 515 moonbr_io_errmsg();
jbe@132 516 lua_pushnil(L);
jbe@132 517 lua_pushstring(L, errmsg);
jbe@132 518 return 2;
jbe@81 519 }
jbe@132 520 } else {
jbe@132 521 handle->writebufout += written;
jbe@132 522 handle->writeleft -= written;
jbe@133 523 if (handle->flushedleft) {
jbe@133 524 if (written >= handle->flushedleft) {
jbe@133 525 handle->flushedleft = 0;
jbe@133 526 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 527 } else {
jbe@133 528 handle->flushedleft -= written;
jbe@133 529 }
jbe@133 530 }
jbe@81 531 }
jbe@132 532 }
jbe@132 533 if (handle->writebufout == handle->writebufin) {
jbe@103 534 handle->writebufin = 0;
jbe@103 535 handle->writebufout = 0;
jbe@81 536 }
jbe@103 537 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 538 else lua_pushvalue(L, 1);
jbe@103 539 handle->writeerr = 0;
jbe@80 540 return 1;
jbe@81 541 moonbr_io_write_impl_block:
jbe@91 542 lua_pushinteger(L, handle->writeleft);
jbe@103 543 handle->writeerr = 0;
jbe@81 544 return 1;
jbe@81 545 }
jbe@81 546
jbe@81 547 static int moonbr_io_write(lua_State *L) {
jbe@81 548 return moonbr_io_write_impl(L, 0, 0);
jbe@81 549 }
jbe@81 550
jbe@81 551 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 552 return moonbr_io_write_impl(L, 1, 0);
jbe@80 553 }
jbe@80 554
jbe@80 555 static int moonbr_io_flush(lua_State *L) {
jbe@81 556 return moonbr_io_write_impl(L, 0, 1);
jbe@81 557 }
jbe@81 558
jbe@81 559 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 560 return moonbr_io_write_impl(L, 1, 1);
jbe@80 561 }
jbe@80 562
jbe@145 563 #if LUA_VERSION_NUM >= 503
jbe@145 564 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 565 #else
jbe@145 566 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 567 #endif
jbe@145 568 while (1) {
jbe@145 569 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 570 lua_pushvalue(L, 1);
jbe@145 571 lua_call(L, 1, 2);
jbe@145 572 if (lua_isnil(L, -2)) return 2;
jbe@145 573 if (!lua_tointeger(L, -2)) {
jbe@145 574 lua_pushvalue(L, 1);
jbe@145 575 return 1;
jbe@145 576 }
jbe@145 577 lua_pop(L, 2);
jbe@145 578 lua_pushvalue(L, 2);
jbe@145 579 lua_pushvalue(L, 1);
jbe@145 580 lua_pushliteral(L, "w");
jbe@145 581 lua_callk(L, 2, 0, 0, moonbr_io_write_cont);
jbe@145 582 }
jbe@145 583 }
jbe@145 584
jbe@145 585 static int moonbr_io_write_call(lua_State *L) {
jbe@145 586 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 587 lua_insert(L, 3);
jbe@145 588 lua_pushvalue(L, 1);
jbe@145 589 lua_insert(L, 4);
jbe@145 590 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 591 if (lua_isnil(L, -2)) return 2;
jbe@145 592 if (!lua_tointeger(L, -2)) {
jbe@145 593 lua_pushvalue(L, 1);
jbe@145 594 return 1;
jbe@145 595 }
jbe@145 596 #if LUA_VERSION_NUM >= 503
jbe@145 597 return moonbr_io_write_cont(L, 0, 0);
jbe@145 598 #else
jbe@145 599 return moonbr_io_write_cont(L);
jbe@145 600 #endif
jbe@145 601 }
jbe@145 602
jbe@145 603 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 604
jbe@145 605 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 606 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 607 lua_insert(L, 3);
jbe@145 608 lua_pushvalue(L, 1);
jbe@145 609 lua_insert(L, 4);
jbe@145 610 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 611 if (lua_isnil(L, -2)) return 2;
jbe@145 612 if (!lua_tointeger(L, -2)) {
jbe@145 613 lua_pushvalue(L, 1);
jbe@145 614 return 1;
jbe@145 615 }
jbe@145 616 #if LUA_VERSION_NUM >= 503
jbe@145 617 return moonbr_io_write_cont(L, 0, 0);
jbe@145 618 #else
jbe@145 619 return moonbr_io_write_cont(L);
jbe@145 620 #endif
jbe@145 621 }
jbe@145 622
jbe@145 623 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 624
jbe@88 625 static int moonbr_io_finish(lua_State *L) {
jbe@88 626 moonbr_io_handle_t *handle;
jbe@88 627 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 628 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 629 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 630 if (handle->writeleft) {
jbe@94 631 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 632 lua_pushvalue(L, 1);
jbe@116 633 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 634 handle->finished = 1;
jbe@116 635 lua_error(L);
jbe@116 636 }
jbe@94 637 if (!lua_toboolean(L, -2)) {
jbe@94 638 handle->finished = 1;
jbe@94 639 return 2;
jbe@88 640 }
jbe@94 641 }
jbe@94 642 handle->finished = 1;
jbe@107 643 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 644 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 645 moonbr_io_errmsg();
jbe@88 646 lua_pushnil(L);
jbe@88 647 lua_pushstring(L, errmsg);
jbe@88 648 return 2;
jbe@88 649 }
jbe@94 650 } else {
jbe@94 651 if (close(handle->fd)) {
jbe@94 652 moonbr_io_errmsg();
jbe@94 653 handle->fd = -1;
jbe@94 654 lua_pushnil(L);
jbe@94 655 lua_pushstring(L, errmsg);
jbe@94 656 return 2;
jbe@94 657 }
jbe@94 658 handle->fd = -1; /* fake EOF on read */
jbe@88 659 }
jbe@88 660 lua_pushboolean(L, 1);
jbe@88 661 return 1;
jbe@88 662 }
jbe@88 663
jbe@94 664 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 665 moonbr_io_handle_t *handle;
jbe@83 666 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 667 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 668 if (!reset) {
jbe@87 669 if (handle->writeleft) {
jbe@87 670 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 671 lua_pushvalue(L, 1);
jbe@116 672 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 673 handle->closed = 1;
jbe@116 674 close(handle->fd);
jbe@116 675 handle->fd = -1;
jbe@116 676 lua_error(L);
jbe@116 677 }
jbe@129 678 handle->closed = 1;
jbe@87 679 if (!lua_toboolean(L, -2)) {
jbe@87 680 close(handle->fd);
jbe@87 681 handle->fd = -1;
jbe@87 682 return 2;
jbe@87 683 }
jbe@129 684 } else {
jbe@129 685 handle->closed = 1;
jbe@129 686 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 687 }
jbe@129 688 } else {
jbe@129 689 handle->closed = 1;
jbe@83 690 }
jbe@94 691 if (handle->fd >= 0) {
jbe@94 692 if (close(handle->fd)) {
jbe@94 693 moonbr_io_errmsg();
jbe@94 694 handle->fd = -1;
jbe@94 695 lua_pushnil(L);
jbe@94 696 lua_pushstring(L, errmsg);
jbe@94 697 return 2;
jbe@94 698 }
jbe@104 699 handle->fd = -1;
jbe@83 700 }
jbe@83 701 lua_pushboolean(L, 1);
jbe@83 702 return 1;
jbe@84 703
jbe@83 704 }
jbe@83 705
jbe@94 706 static int moonbr_io_close(lua_State *L) {
jbe@94 707 return moonbr_io_close_impl(L, 0);
jbe@94 708 }
jbe@94 709
jbe@84 710 static int moonbr_io_reset(lua_State *L) {
jbe@94 711 return moonbr_io_close_impl(L, 1);
jbe@84 712 }
jbe@84 713
jbe@108 714 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 715 moonbr_io_handle_t *handle;
jbe@88 716 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 717 if (handle->fd >= 0) {
jbe@88 718 lua_pushcfunction(L, moonbr_io_close);
jbe@88 719 lua_pushvalue(L, 1);
jbe@88 720 lua_pushinteger(L, 0);
jbe@88 721 lua_call(L, 2, 0);
jbe@88 722 }
jbe@88 723 return 0;
jbe@88 724 }
jbe@88 725
jbe@100 726 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 727 moonbr_io_handle_t *handle;
jbe@88 728 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 729 if (!handle->closed) {
jbe@100 730 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 731 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 732 lua_call(L, 1, 0);
jbe@88 733 }
jbe@88 734 }
jbe@88 735
jbe@107 736 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 737 moonbr_io_handle_t *handle;
jbe@107 738 struct sockaddr addr;
jbe@107 739 socklen_t addrlen;
jbe@79 740 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 741 handle->fd = fd;
jbe@107 742 addrlen = sizeof(addr);
jbe@107 743 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 744 if (errno != ENOTSOCK) {
jbe@107 745 moonbr_io_errmsg();
jbe@107 746 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 747 }
jbe@107 748 handle->issock = 0;
jbe@107 749 } else {
jbe@107 750 handle->issock = 1;
jbe@107 751 handle->addrfam = addr.sa_family;
jbe@107 752 }
jbe@94 753 handle->finished = 0;
jbe@94 754 handle->closed = 0;
jbe@81 755 handle->nonblocking = -1;
jbe@95 756 handle->nopush = -1;
jbe@85 757 handle->readerr = 0;
jbe@105 758 handle->readbufin = 0;
jbe@105 759 handle->readbufout = 0;
jbe@81 760 handle->writeerr = 0;
jbe@81 761 handle->writeleft = 0;
jbe@132 762 handle->flushedleft = 0;
jbe@83 763 handle->writeqin = 0;
jbe@83 764 handle->writeqout = 0;
jbe@81 765 handle->writeqoff = 0;
jbe@103 766 handle->writebufin = 0;
jbe@103 767 handle->writebufout = 0;
jbe@87 768 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 769 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 770 lua_setmetatable(L, -2);
jbe@79 771 lua_newtable(L); // uservalue
jbe@81 772 lua_newtable(L);
jbe@103 773 lua_setfield(L, -2, "writequeue");
jbe@79 774 lua_newtable(L); // public
jbe@107 775 if (handle->addrfam == AF_INET6) {
jbe@107 776 struct sockaddr_in6 addr_in6;
jbe@107 777 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 778 const char *addrstr;
jbe@107 779 addrlen = sizeof(addr_in6);
jbe@107 780 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 781 moonbr_io_errmsg();
jbe@107 782 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 783 }
jbe@107 784 if (addrlen > sizeof(addr_in6)) {
jbe@107 785 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 786 }
jbe@107 787 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 788 if (!addrstr) {
jbe@107 789 moonbr_io_errmsg();
jbe@107 790 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 791 } else {
jbe@107 792 lua_pushstring(L, addrstr);
jbe@107 793 lua_setfield(L, -2, "local_ip6");
jbe@107 794 }
jbe@107 795 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 796 lua_setfield(L, -2, "local_tcpport");
jbe@107 797 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 798 moonbr_io_errmsg();
jbe@107 799 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 800 }
jbe@107 801 if (addrlen > sizeof(addr_in6)) {
jbe@107 802 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 803 }
jbe@107 804 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 805 if (!addrstr) {
jbe@107 806 moonbr_io_errmsg();
jbe@107 807 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 808 } else {
jbe@107 809 lua_pushstring(L, addrstr);
jbe@107 810 lua_setfield(L, -2, "remote_ip6");
jbe@107 811 }
jbe@107 812 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 813 lua_setfield(L, -2, "remote_tcpport");
jbe@107 814 } else if (handle->addrfam == AF_INET) {
jbe@107 815 struct sockaddr_in addr_in;
jbe@107 816 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 817 const char *addrstr;
jbe@107 818 addrlen = sizeof(addr_in);
jbe@107 819 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 820 moonbr_io_errmsg();
jbe@107 821 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 822 }
jbe@107 823 if (addrlen > sizeof(addr_in)) {
jbe@107 824 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 825 }
jbe@107 826 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 827 if (!addrstr) {
jbe@107 828 moonbr_io_errmsg();
jbe@107 829 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 830 } else {
jbe@107 831 lua_pushstring(L, addrstr);
jbe@107 832 lua_setfield(L, -2, "local_ip4");
jbe@107 833 }
jbe@107 834 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 835 lua_setfield(L, -2, "local_tcpport");
jbe@107 836 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 837 moonbr_io_errmsg();
jbe@107 838 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 839 }
jbe@107 840 if (addrlen > sizeof(addr_in)) {
jbe@107 841 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 842 }
jbe@107 843 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 844 if (!addrstr) {
jbe@107 845 moonbr_io_errmsg();
jbe@107 846 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 847 } else {
jbe@107 848 lua_pushstring(L, addrstr);
jbe@107 849 lua_setfield(L, -2, "remote_ip4");
jbe@107 850 }
jbe@107 851 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 852 lua_setfield(L, -2, "remote_tcpport");
jbe@107 853 }
jbe@79 854 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 855 lua_setmetatable(L, -2);
jbe@79 856 lua_setfield(L, -2, "public");
jbe@79 857 lua_setuservalue(L, -2);
jbe@79 858 }
jbe@79 859
jbe@79 860 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 861 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 862 lua_getuservalue(L, 1);
jbe@79 863 lua_getfield(L, -1, "public");
jbe@79 864 lua_pushvalue(L, 2);
jbe@79 865 lua_gettable(L, -2);
jbe@79 866 return 1;
jbe@79 867 }
jbe@79 868
jbe@79 869 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 870 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 871 lua_getuservalue(L, 1);
jbe@79 872 lua_getfield(L, -1, "public");
jbe@79 873 lua_pushvalue(L, 2);
jbe@79 874 lua_pushvalue(L, 3);
jbe@79 875 lua_settable(L, -3);
jbe@79 876 return 0;
jbe@79 877 }
jbe@79 878
jbe@111 879 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 880 const char *path;
jbe@111 881 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 882 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 883 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 884 ) - 1; /* one byte for termination */
jbe@111 885 int sock;
jbe@111 886 path = luaL_checkstring(L, 1);
jbe@111 887 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 888 strcpy(sockaddr.sun_path, path);
jbe@111 889 sock = socket(
jbe@111 890 PF_LOCAL,
jbe@111 891 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 892 0
jbe@111 893 );
jbe@111 894 if (sock < 0) {
jbe@111 895 moonbr_io_errmsg();
jbe@111 896 lua_pushnil(L);
jbe@111 897 lua_pushstring(L, errmsg);
jbe@111 898 return 2;
jbe@111 899 }
jbe@111 900 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 901 if (!nonblocking && errno == EINTR) {
jbe@111 902 moonbr_io_errmsg();
jbe@111 903 close(sock);
jbe@111 904 lua_pushnil(L);
jbe@111 905 lua_pushstring(L, errmsg);
jbe@111 906 return 2;
jbe@111 907 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 908 moonbr_io_errmsg();
jbe@111 909 lua_pushnil(L);
jbe@111 910 lua_pushstring(L, errmsg);
jbe@111 911 return 2;
jbe@111 912 }
jbe@111 913 }
jbe@111 914 moonbr_io_pushhandle(L, sock);
jbe@111 915 return 1;
jbe@111 916 }
jbe@111 917
jbe@111 918 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 919 return moonbr_io_localconnect_impl(L, 0);
jbe@111 920 }
jbe@111 921
jbe@111 922 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 923 return moonbr_io_localconnect_impl(L, 1);
jbe@111 924 }
jbe@111 925
jbe@99 926 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 927 const char *host, *port;
jbe@98 928 struct addrinfo hints = { 0, };
jbe@98 929 struct addrinfo *res, *addrinfo;
jbe@98 930 int errcode;
jbe@98 931 int sock;
jbe@98 932 host = luaL_checkstring(L, 1);
jbe@98 933 port = luaL_checkstring(L, 2);
jbe@98 934 hints.ai_family = AF_UNSPEC;
jbe@98 935 hints.ai_socktype = SOCK_STREAM;
jbe@98 936 hints.ai_protocol = IPPROTO_TCP;
jbe@98 937 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 938 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 939 if (errcode) {
jbe@102 940 freeaddrinfo(res);
jbe@98 941 if (errcode == EAI_SYSTEM) {
jbe@98 942 moonbr_io_errmsg();
jbe@98 943 lua_pushnil(L);
jbe@98 944 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 945 } else {
jbe@98 946 lua_pushnil(L);
jbe@98 947 lua_pushstring(L, gai_strerror(errcode));
jbe@98 948 }
jbe@98 949 return 2;
jbe@98 950 }
jbe@98 951 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 952 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 953 }
jbe@98 954 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 955 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 956 }
jbe@98 957 addrinfo = res;
jbe@98 958 moonbr_io_tcpconnect_found:
jbe@99 959 sock = socket(
jbe@134 960 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 961 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 962 addrinfo->ai_protocol
jbe@99 963 );
jbe@98 964 if (sock < 0) {
jbe@98 965 moonbr_io_errmsg();
jbe@108 966 freeaddrinfo(res);
jbe@98 967 lua_pushnil(L);
jbe@98 968 lua_pushstring(L, errmsg);
jbe@108 969 return 2;
jbe@98 970 }
jbe@98 971 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 972 freeaddrinfo(res);
jbe@99 973 if (!nonblocking && errno == EINTR) {
jbe@99 974 moonbr_io_errmsg();
jbe@99 975 close(sock);
jbe@99 976 lua_pushnil(L);
jbe@99 977 lua_pushstring(L, errmsg);
jbe@99 978 return 2;
jbe@99 979 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 980 moonbr_io_errmsg();
jbe@99 981 lua_pushnil(L);
jbe@99 982 lua_pushstring(L, errmsg);
jbe@99 983 return 2;
jbe@99 984 }
jbe@108 985 } else {
jbe@108 986 freeaddrinfo(res);
jbe@98 987 }
jbe@107 988 moonbr_io_pushhandle(L, sock);
jbe@98 989 return 1;
jbe@98 990 }
jbe@98 991
jbe@99 992 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 993 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 994 }
jbe@99 995
jbe@99 996 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 997 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 998 }
jbe@99 999
jbe@112 1000 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1001 moonbr_io_listener_t *listener;
jbe@112 1002 const char *path;
jbe@118 1003 struct stat sb;
jbe@112 1004 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1005 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1006 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1007 ) - 1; /* one byte for termination */
jbe@112 1008 int sock;
jbe@112 1009 path = luaL_checkstring(L, 1);
jbe@112 1010 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1011 strcpy(sockaddr.sun_path, path);
jbe@118 1012 if (stat(path, &sb) == 0) {
jbe@118 1013 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1014 }
jbe@112 1015 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1016 listener->fd = -1;
jbe@112 1017 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1018 sock = socket(
jbe@112 1019 PF_LOCAL,
jbe@112 1020 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1021 0
jbe@112 1022 );
jbe@112 1023 if (sock < 0) {
jbe@112 1024 moonbr_io_errmsg();
jbe@112 1025 lua_pushnil(L);
jbe@112 1026 lua_pushstring(L, errmsg);
jbe@112 1027 return 2;
jbe@112 1028 }
jbe@112 1029 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1030 moonbr_io_errmsg();
jbe@112 1031 close(sock);
jbe@112 1032 lua_pushnil(L);
jbe@112 1033 lua_pushstring(L, errmsg);
jbe@112 1034 return 2;
jbe@112 1035 }
jbe@112 1036 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 1037 moonbr_io_errmsg();
jbe@112 1038 close(sock);
jbe@112 1039 lua_pushnil(L);
jbe@112 1040 lua_pushstring(L, errmsg);
jbe@112 1041 return 2;
jbe@112 1042 }
jbe@112 1043 listener->fd = sock;
jbe@118 1044 listener->addrfam = AF_LOCAL;
jbe@112 1045 listener->nonblocking = -1;
jbe@112 1046 return 1;
jbe@112 1047 }
jbe@112 1048
jbe@108 1049 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1050 moonbr_io_listener_t *listener;
jbe@108 1051 const char *host, *port;
jbe@108 1052 struct addrinfo hints = { 0, };
jbe@108 1053 struct addrinfo *res, *addrinfo;
jbe@108 1054 int errcode;
jbe@108 1055 int sock;
jbe@108 1056 host = luaL_optstring(L, 1, NULL);
jbe@108 1057 port = luaL_checkstring(L, 2);
jbe@108 1058 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1059 listener->fd = -1;
jbe@108 1060 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1061 hints.ai_family = AF_UNSPEC;
jbe@108 1062 hints.ai_socktype = SOCK_STREAM;
jbe@108 1063 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1064 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1065 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1066 if (errcode) {
jbe@108 1067 freeaddrinfo(res);
jbe@108 1068 if (errcode == EAI_SYSTEM) {
jbe@108 1069 moonbr_io_errmsg();
jbe@108 1070 lua_pushnil(L);
jbe@108 1071 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1072 } else {
jbe@108 1073 lua_pushnil(L);
jbe@108 1074 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1075 }
jbe@108 1076 return 2;
jbe@108 1077 }
jbe@108 1078 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1079 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1080 }
jbe@108 1081 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1082 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1083 }
jbe@108 1084 addrinfo = res;
jbe@108 1085 moonbr_io_tcpconnect_found:
jbe@118 1086 listener->addrfam = addrinfo->ai_family;
jbe@108 1087 sock = socket(
jbe@134 1088 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1089 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1090 addrinfo->ai_protocol
jbe@108 1091 );
jbe@108 1092 if (sock < 0) {
jbe@108 1093 moonbr_io_errmsg();
jbe@108 1094 freeaddrinfo(res);
jbe@108 1095 lua_pushnil(L);
jbe@108 1096 lua_pushstring(L, errmsg);
jbe@108 1097 return 2;
jbe@108 1098 }
jbe@120 1099 {
jbe@120 1100 static const int reuseval = 1;
jbe@120 1101 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1102 moonbr_io_errmsg();
jbe@120 1103 freeaddrinfo(res);
jbe@120 1104 close(sock);
jbe@120 1105 lua_pushnil(L);
jbe@120 1106 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1107 return 2;
jbe@120 1108 }
jbe@120 1109 }
jbe@108 1110 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1111 moonbr_io_errmsg();
jbe@108 1112 freeaddrinfo(res);
jbe@108 1113 close(sock);
jbe@108 1114 lua_pushnil(L);
jbe@108 1115 lua_pushstring(L, errmsg);
jbe@108 1116 return 2;
jbe@108 1117 }
jbe@108 1118 freeaddrinfo(res);
jbe@108 1119 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1120 moonbr_io_errmsg();
jbe@108 1121 close(sock);
jbe@108 1122 lua_pushnil(L);
jbe@108 1123 lua_pushstring(L, errmsg);
jbe@108 1124 return 2;
jbe@108 1125 }
jbe@108 1126 listener->fd = sock;
jbe@108 1127 listener->nonblocking = -1;
jbe@108 1128 return 1;
jbe@108 1129 }
jbe@108 1130
jbe@108 1131 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1132 moonbr_io_listener_t *listener;
jbe@108 1133 int fd;
jbe@108 1134 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1135 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1136 if (listener->nonblocking != nonblocking) {
jbe@108 1137 int flags;
jbe@108 1138 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1139 if (flags == -1) {
jbe@108 1140 moonbr_io_errmsg();
jbe@108 1141 close(listener->fd);
jbe@108 1142 listener->fd = -1;
jbe@108 1143 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1144 }
jbe@108 1145 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1146 else flags &= ~O_NONBLOCK;
jbe@108 1147 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1148 moonbr_io_errmsg();
jbe@108 1149 close(listener->fd);
jbe@108 1150 listener->fd = -1;
jbe@108 1151 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1152 }
jbe@108 1153 listener->nonblocking = nonblocking;
jbe@108 1154 }
jbe@108 1155 while (1) {
jbe@108 1156 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1157 if (fd < 0) {
jbe@108 1158 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1159 lua_pushboolean(L, 0);
jbe@108 1160 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1161 return 2;
jbe@108 1162 } else if (errno != EINTR) {
jbe@108 1163 moonbr_io_errmsg();
jbe@108 1164 lua_pushnil(L);
jbe@108 1165 lua_pushstring(L, errmsg);
jbe@108 1166 return 2;
jbe@108 1167 }
jbe@108 1168 } else {
jbe@108 1169 moonbr_io_pushhandle(L, fd);
jbe@108 1170 return 1;
jbe@108 1171 }
jbe@108 1172 }
jbe@108 1173 }
jbe@108 1174
jbe@108 1175 static int moonbr_io_accept(lua_State *L) {
jbe@108 1176 return moonbr_io_accept_impl(L, 0);
jbe@108 1177 }
jbe@108 1178
jbe@108 1179 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1180 return moonbr_io_accept_impl(L, 1);
jbe@108 1181 }
jbe@108 1182
jbe@108 1183 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1184 moonbr_io_listener_t *listener;
jbe@118 1185 struct sockaddr_un addr;
jbe@118 1186 socklen_t addrlen;
jbe@118 1187 struct stat sb;
jbe@108 1188 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1189 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1190 addrlen = sizeof(addr);
jbe@118 1191 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1192 if (close(listener->fd)) {
jbe@108 1193 moonbr_io_errmsg();
jbe@108 1194 listener->fd = -1;
jbe@118 1195 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1196 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1197 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1198 }
jbe@118 1199 }
jbe@108 1200 lua_pushnil(L);
jbe@108 1201 lua_pushstring(L, errmsg);
jbe@108 1202 return 2;
jbe@108 1203 }
jbe@108 1204 listener->fd = -1;
jbe@118 1205 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1206 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1207 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1208 }
jbe@118 1209 }
jbe@108 1210 lua_pushboolean(L, 1);
jbe@108 1211 return 1;
jbe@108 1212 }
jbe@108 1213
jbe@108 1214 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1215 moonbr_io_listener_t *listener;
jbe@108 1216 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1217 if (listener->fd >= 0) close(listener->fd);
jbe@108 1218 listener->fd = -1;
jbe@108 1219 return 0;
jbe@108 1220 }
jbe@108 1221
jbe@106 1222 static int moonbr_io_poll(lua_State *L) {
jbe@106 1223 moonbr_io_handle_t *handle;
jbe@108 1224 moonbr_io_listener_t *listener;
jbe@106 1225 int fd, isnum;
jbe@106 1226 int nfds = 0;
jbe@106 1227 fd_set readfds, writefds, exceptfds;
jbe@106 1228 struct timeval timeout = {0, };
jbe@106 1229 int status;
jbe@106 1230 FD_ZERO(&readfds);
jbe@106 1231 FD_ZERO(&writefds);
jbe@106 1232 FD_ZERO(&exceptfds);
jbe@106 1233 if (!lua_isnoneornil(L, 1)) {
jbe@106 1234 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1235 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1236 if (lua_toboolean(L, -1)) {
jbe@106 1237 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1238 if (handle) {
jbe@109 1239 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1240 fd = handle->fd;
jbe@122 1241 if (
jbe@122 1242 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1243 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1244 ) {
jbe@109 1245 lua_pushboolean(L, 1);
jbe@109 1246 return 1;
jbe@109 1247 }
jbe@106 1248 } else {
jbe@108 1249 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1250 if (listener) {
jbe@108 1251 fd = listener->fd;
jbe@108 1252 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1253 } else {
jbe@108 1254 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1255 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1256 }
jbe@106 1257 }
jbe@138 1258 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1259 FD_SET(fd, &readfds);
jbe@106 1260 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1261 }
jbe@106 1262 }
jbe@106 1263 }
jbe@106 1264 if (!lua_isnoneornil(L, 2)) {
jbe@106 1265 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1266 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1267 if (lua_toboolean(L, -1)) {
jbe@106 1268 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1269 if (handle) {
jbe@109 1270 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1271 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1272 fd = handle->fd;
jbe@106 1273 } else {
jbe@108 1274 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1275 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1276 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1277 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1278 }
jbe@138 1279 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1280 FD_SET(fd, &writefds);
jbe@106 1281 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1282 }
jbe@106 1283 }
jbe@106 1284 }
jbe@106 1285 if (!lua_isnoneornil(L, 3)) {
jbe@106 1286 lua_Number n;
jbe@106 1287 n = lua_tonumberx(L, 3, &isnum);
jbe@106 1288 if (isnum && n>=0 && n<100000000) {
jbe@106 1289 timeout.tv_sec = n;
jbe@106 1290 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1291 } else {
jbe@106 1292 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1293 }
jbe@106 1294 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1295 } else {
jbe@106 1296 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1297 }
jbe@106 1298 if (status == -1) {
jbe@106 1299 if (errno == EINTR) {
jbe@106 1300 lua_pushboolean(L, 0);
jbe@106 1301 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1302 return 2;
jbe@106 1303 } else {
jbe@106 1304 moonbr_io_errmsg();
jbe@106 1305 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1306 }
jbe@106 1307 } else if (status == 0) {
jbe@106 1308 lua_pushboolean(L, 0);
jbe@106 1309 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1310 return 2;
jbe@106 1311 } else {
jbe@106 1312 lua_pushboolean(L, 1);
jbe@106 1313 return 1;
jbe@106 1314 }
jbe@106 1315 }
jbe@106 1316
jbe@115 1317 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1318 lua_Number sub;
jbe@115 1319 struct timespec tp;
jbe@115 1320 sub = luaL_optnumber(L, 1, 0);
jbe@115 1321 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1322 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1323 }
jbe@115 1324 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1325 return 1;
jbe@115 1326 }
jbe@115 1327
jbe@79 1328 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1329 {"read", moonbr_io_read},
jbe@85 1330 {"read_nb", moonbr_io_read_nb},
jbe@140 1331 {"read_call", moonbr_io_read_call},
jbe@140 1332 {"read_yield", moonbr_io_read_yield},
jbe@86 1333 {"drain", moonbr_io_drain},
jbe@86 1334 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1335 {"drain_call", moonbr_io_drain_call},
jbe@144 1336 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1337 {"write", moonbr_io_write},
jbe@81 1338 {"write_nb", moonbr_io_write_nb},
jbe@145 1339 {"write_call", moonbr_io_write_call},
jbe@145 1340 {"write_yield", moonbr_io_write_yield},
jbe@80 1341 {"flush", moonbr_io_flush},
jbe@81 1342 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1343 {"flush_call", moonbr_io_flush_call},
jbe@145 1344 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1345 {"finish", moonbr_io_finish},
jbe@87 1346 {"close", moonbr_io_close},
jbe@85 1347 {"reset", moonbr_io_reset},
jbe@79 1348 {NULL, NULL}
jbe@79 1349 };
jbe@79 1350
jbe@79 1351 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1352 {"__index", moonbr_io_handleindex},
jbe@79 1353 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1354 {"__gc", moonbr_io_handlegc},
jbe@108 1355 {NULL, NULL}
jbe@108 1356 };
jbe@108 1357
jbe@108 1358 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1359 {"accept", moonbr_io_accept},
jbe@108 1360 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1361 {"close", moonbr_io_unlisten},
jbe@108 1362 {NULL, NULL}
jbe@108 1363 };
jbe@108 1364
jbe@108 1365 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1366 {"__gc", moonbr_io_listenergc},
jbe@79 1367 {NULL, NULL}
jbe@79 1368 };
jbe@79 1369
jbe@79 1370 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1371 {"localconnect", moonbr_io_localconnect},
jbe@111 1372 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1373 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1374 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1375 {"locallisten", moonbr_io_locallisten},
jbe@108 1376 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1377 {"poll", moonbr_io_poll},
jbe@115 1378 {"timeref", moonbr_io_timeref},
jbe@79 1379 {NULL, NULL}
jbe@79 1380 };
jbe@79 1381
jbe@79 1382 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1383
jbe@113 1384 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1385
jbe@80 1386 lua_newtable(L); // module
jbe@80 1387
jbe@79 1388 lua_newtable(L); // public metatable
jbe@79 1389 lua_newtable(L); // handle methods
jbe@79 1390 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1391 lua_pushvalue(L, -1);
jbe@108 1392 lua_setfield(L, -4, "prototype_handle");
jbe@79 1393 lua_setfield(L, -2, "__index");
jbe@79 1394 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1395
jbe@79 1396 lua_newtable(L); // handle metatable
jbe@79 1397 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 1398 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1399
jbe@108 1400 lua_newtable(L); // listener metatable
jbe@108 1401 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1402 lua_newtable(L); // listener methods
jbe@108 1403 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1404 lua_pushvalue(L, -1);
jbe@108 1405 lua_setfield(L, -4, "prototype_listener");
jbe@108 1406 lua_setfield(L, -2, "__index");
jbe@108 1407 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1408
jbe@79 1409 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1410 return 1;
jbe@79 1411
jbe@79 1412 }
jbe@79 1413

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