moonbridge

annotate moonbridge_io.c @ 182:a79ed835b6de

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Code cleanup in HTTP module
author jbe
date Fri Jun 19 03:09:58 2015 +0200 (2015-06-19)
parents 08cf8e1865e9
children d338068fad0d
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@149 26 #include <assert.h>
jbe@149 27
jbe@80 28 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 29 #define MOONBR_IO_READBUFLEN 4096
jbe@80 30 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 31
jbe@108 32 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 33
jbe@80 34 #define moonbr_io_errmsg() \
jbe@80 35 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 36 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 37
jbe@79 38 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 39 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 40 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 41
jbe@79 42 typedef struct {
jbe@79 43 int fd;
jbe@107 44 int issock;
jbe@107 45 sa_family_t addrfam;
jbe@94 46 int finished;
jbe@94 47 int closed;
jbe@81 48 int nonblocking;
jbe@95 49 int nopush;
jbe@85 50 int readerr;
jbe@105 51 int readbufin;
jbe@105 52 int readbufout;
jbe@81 53 int writeerr;
jbe@83 54 size_t writeleft;
jbe@132 55 size_t flushedleft;
jbe@83 56 #if LUA_VERSION_NUM >= 503
jbe@83 57 lua_Integer writeqin;
jbe@83 58 lua_Integer writeqout;
jbe@83 59 #else
jbe@83 60 int writeqin;
jbe@83 61 int writeqout;
jbe@83 62 #endif
jbe@83 63 size_t writeqoff;
jbe@103 64 int writebufin;
jbe@103 65 int writebufout;
jbe@85 66 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 67 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 68 } moonbr_io_handle_t;
jbe@79 69
jbe@108 70 typedef struct {
jbe@108 71 int fd;
jbe@118 72 sa_family_t addrfam;
jbe@108 73 int nonblocking;
jbe@108 74 } moonbr_io_listener_t;
jbe@108 75
jbe@148 76 static int moonbr_io_yield(lua_State *L) {
jbe@149 77 return lua_yield(L, lua_gettop(L));
jbe@140 78 }
jbe@140 79
jbe@140 80 #if LUA_VERSION_NUM >= 503
jbe@140 81 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 82 #else
jbe@140 83 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 84 #endif
jbe@140 85 return lua_gettop(L);
jbe@140 86 }
jbe@140 87
jbe@145 88 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 89 static int yieldfunc(lua_State *L) { \
jbe@145 90 int args; \
jbe@145 91 lua_pushcfunction(L, callfunc); \
jbe@145 92 lua_insert(L, 1); \
jbe@145 93 args = lua_gettop(L); \
jbe@148 94 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 95 lua_insert(L, 3); \
jbe@145 96 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 97 return lua_gettop(L); \
jbe@145 98 }
jbe@145 99
jbe@81 100 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 101 int flags;
jbe@95 102 if (handle->nonblocking == nonblocking) return;
jbe@95 103 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 104 if (flags == -1) {
jbe@95 105 moonbr_io_errmsg();
jbe@96 106 close(handle->fd);
jbe@96 107 handle->fd = -1;
jbe@96 108 handle->closed = 1;
jbe@95 109 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 110 }
jbe@95 111 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 112 else flags &= ~O_NONBLOCK;
jbe@95 113 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 114 moonbr_io_errmsg();
jbe@96 115 close(handle->fd);
jbe@96 116 handle->fd = -1;
jbe@96 117 handle->closed = 1;
jbe@95 118 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 119 }
jbe@95 120 handle->nonblocking = nonblocking;
jbe@81 121 }
jbe@81 122
jbe@87 123 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 124 struct linger lingerval = { 0, };
jbe@107 125 if (!handle->issock) return;
jbe@87 126 if (timeout >= 0) {
jbe@87 127 lingerval.l_onoff = 1;
jbe@87 128 lingerval.l_linger = timeout;
jbe@87 129 }
jbe@87 130 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 131 moonbr_io_errmsg();
jbe@96 132 close(handle->fd);
jbe@96 133 handle->fd = -1;
jbe@96 134 handle->closed = 1;
jbe@95 135 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 136 }
jbe@87 137 }
jbe@87 138
jbe@133 139 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 140 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 141 if (
jbe@107 142 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 143 handle->nopush == nopush
jbe@107 144 ) return;
jbe@96 145 #if defined(TCP_NOPUSH)
jbe@96 146 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 147 #elif defined(TCP_CORK)
jbe@104 148 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 149 #endif
jbe@96 150 moonbr_io_errmsg();
jbe@96 151 close(handle->fd);
jbe@96 152 handle->fd = -1;
jbe@96 153 handle->closed = 1;
jbe@104 154 #if defined(TCP_NOPUSH)
jbe@96 155 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 156 #elif defined(TCP_CORK)
jbe@95 157 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 158 #endif
jbe@95 159 }
jbe@95 160 handle->nopush = nopush;
jbe@96 161 #else
jbe@96 162 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 163 #endif
jbe@95 164 }
jbe@95 165
jbe@86 166 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 167 moonbr_io_handle_t *handle;
jbe@85 168 lua_Integer maxread;
jbe@85 169 const char *terminatorstr;
jbe@85 170 size_t terminatorlen;
jbe@137 171 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 172 luaL_Buffer luabuf;
jbe@85 173 size_t luabufcnt = 0;
jbe@105 174 int remaining;
jbe@85 175 char *terminatorpos;
jbe@103 176 ssize_t bytesread;
jbe@85 177 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153 178 maxread = luaL_optinteger(L, 2, -1);
jbe@85 179 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 180 if (terminatorlen) {
jbe@85 181 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 182 terminator = terminatorstr[0];
jbe@85 183 }
jbe@86 184 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 185 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 186 if (handle->readerr) {
jbe@85 187 lua_pushnil(L);
jbe@85 188 lua_pushliteral(L, "Previous read error");
jbe@85 189 return 2;
jbe@85 190 }
jbe@143 191 if (handle->fd < 0) {
jbe@143 192 /* fake EOF to simulate shutdown */
jbe@143 193 if (!drain) lua_pushliteral(L, "");
jbe@143 194 else lua_pushinteger(L, 0);
jbe@143 195 lua_pushliteral(L, "eof");
jbe@143 196 return 2;
jbe@143 197 }
jbe@105 198 handle->readerr = 1;
jbe@85 199 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 200 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 201 while (1) {
jbe@105 202 remaining = -1;
jbe@142 203 terminatorpos = NULL;
jbe@105 204 if (
jbe@153 205 maxread >= 0 &&
jbe@143 206 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 207 ) {
jbe@142 208 remaining = (size_t)maxread - luabufcnt;
jbe@142 209 terminatorpos = memchr(
jbe@142 210 handle->readbuf + handle->readbufout,
jbe@142 211 terminator,
jbe@142 212 remaining
jbe@142 213 );
jbe@85 214 } else if (terminatorlen) {
jbe@105 215 terminatorpos = memchr(
jbe@105 216 handle->readbuf + handle->readbufout,
jbe@105 217 terminator,
jbe@105 218 handle->readbufin - handle->readbufout
jbe@105 219 );
jbe@85 220 }
jbe@142 221 if (terminatorpos) remaining = 1 + (
jbe@142 222 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 223 );
jbe@105 224 if (remaining >= 0) {
jbe@86 225 if (!drain) {
jbe@105 226 luaL_addlstring(
jbe@105 227 &luabuf,
jbe@105 228 handle->readbuf + handle->readbufout,
jbe@105 229 remaining
jbe@105 230 );
jbe@86 231 luaL_pushresult(&luabuf);
jbe@90 232 } else {
jbe@105 233 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 234 }
jbe@143 235 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 236 else lua_pushliteral(L, "maxlen");
jbe@105 237 handle->readbufout += remaining;
jbe@105 238 if (handle->readbufout == handle->readbufin) {
jbe@105 239 handle->readbufin = 0;
jbe@143 240 handle->readbufout = 0;
jbe@105 241 }
jbe@104 242 handle->readerr = 0;
jbe@143 243 return 2;
jbe@85 244 }
jbe@105 245 if (!drain) luaL_addlstring(
jbe@105 246 &luabuf,
jbe@105 247 handle->readbuf + handle->readbufout,
jbe@105 248 handle->readbufin - handle->readbufout
jbe@105 249 );
jbe@105 250 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 251 handle->readbufout = 0;
jbe@85 252 do {
jbe@103 253 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 254 } while (bytesread < 0 && (errno == EINTR));
jbe@105 255 if (
jbe@105 256 bytesread == 0 || (
jbe@105 257 nonblocking &&
jbe@105 258 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 259 )
jbe@105 260 ) {
jbe@105 261 handle->readbufin = 0;
jbe@143 262 if (!drain) luaL_pushresult(&luabuf);
jbe@143 263 else lua_pushinteger(L, luabufcnt);
jbe@143 264 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 265 else lua_pushliteral(L, "block");
jbe@105 266 handle->readerr = 0;
jbe@143 267 return 2;
jbe@105 268 }
jbe@103 269 if (bytesread < 0) {
jbe@85 270 moonbr_io_errmsg();
jbe@85 271 lua_pushnil(L);
jbe@85 272 lua_pushstring(L, errmsg);
jbe@85 273 return 2;
jbe@85 274 }
jbe@105 275 handle->readbufin = bytesread;
jbe@86 276 }
jbe@85 277 }
jbe@85 278
jbe@85 279 static int moonbr_io_read(lua_State *L) {
jbe@86 280 return moonbr_io_read_impl(L, 0, 0);
jbe@85 281 }
jbe@85 282
jbe@85 283 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 284 return moonbr_io_read_impl(L, 1, 0);
jbe@86 285 }
jbe@86 286
jbe@86 287 static int moonbr_io_drain(lua_State *L) {
jbe@86 288 return moonbr_io_read_impl(L, 0, 1);
jbe@86 289 }
jbe@86 290
jbe@86 291 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 292 return moonbr_io_read_impl(L, 1, 1);
jbe@85 293 }
jbe@85 294
jbe@140 295 #if LUA_VERSION_NUM >= 503
jbe@140 296 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 297 #else
jbe@140 298 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 299 #endif
jbe@143 300 lua_Integer remaining;
jbe@143 301 size_t len;
jbe@140 302 #if !(LUA_VERSION_NUM >= 503)
jbe@140 303 int ctx = 0;
jbe@140 304 lua_getctx(L, &ctx);
jbe@140 305 #endif
jbe@140 306 remaining = lua_tointeger(L, 3);
jbe@140 307 while (1) {
jbe@140 308 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 309 lua_pushvalue(L, 1);
jbe@140 310 lua_pushvalue(L, 3);
jbe@140 311 lua_pushvalue(L, 4);
jbe@140 312 lua_call(L, 3, 2);
jbe@143 313 if (lua_isnil(L, -2)) return 2;
jbe@143 314 lua_insert(L, -2);
jbe@143 315 len = lua_rawlen(L, -1);
jbe@143 316 if (ctx == 0) {
jbe@143 317 lua_replace(L, 5);
jbe@143 318 ctx = 1;
jbe@143 319 } else if (ctx == 1) {
jbe@143 320 lua_pushvalue(L, 5);
jbe@143 321 lua_newtable(L);
jbe@143 322 lua_replace(L, 5);
jbe@143 323 lua_rawseti(L, 5, 2);
jbe@143 324 lua_rawseti(L, 5, 1);
jbe@143 325 ctx = 2;
jbe@140 326 } else {
jbe@143 327 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 328 }
jbe@144 329 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 330 lua_pop(L, 1);
jbe@144 331 if (remaining >= 0 && len) {
jbe@143 332 remaining -= len;
jbe@143 333 lua_pushinteger(L, remaining);
jbe@143 334 lua_replace(L, 3);
jbe@143 335 }
jbe@140 336 lua_pushvalue(L, 2);
jbe@152 337 lua_callk(L, 0, 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@152 399 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 400 }
jbe@144 401 lua_pushinteger(L, totallen);
jbe@144 402 lua_pushvalue(L, -2);
jbe@144 403 return 2;
jbe@144 404 }
jbe@144 405
jbe@144 406 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 407 #if LUA_VERSION_NUM >= 503
jbe@144 408 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 409 #else
jbe@144 410 return moonbr_io_drain_cont(L);
jbe@144 411 #endif
jbe@144 412 }
jbe@144 413
jbe@145 414 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 415
jbe@81 416 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 417 moonbr_io_handle_t *handle;
jbe@80 418 int i, top;
jbe@80 419 const char *str;
jbe@92 420 size_t strlen;
jbe@103 421 ssize_t written;
jbe@80 422 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 423 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 424 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 425 if (handle->writeerr) {
jbe@80 426 lua_pushnil(L);
jbe@80 427 lua_pushliteral(L, "Previous write error");
jbe@80 428 return 2;
jbe@80 429 }
jbe@103 430 handle->writeerr = 1;
jbe@81 431 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 432 top = lua_gettop(L);
jbe@81 433 lua_getuservalue(L, 1);
jbe@103 434 lua_getfield(L, -1, "writequeue");
jbe@84 435 for (i=2; i<=top; i++) {
jbe@84 436 luaL_checklstring(L, i, &strlen);
jbe@84 437 lua_pushvalue(L, i);
jbe@84 438 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 439 handle->writeleft += strlen;
jbe@81 440 }
jbe@132 441 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 442 while (handle->writeqout != handle->writeqin) {
jbe@83 443 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 444 str = lua_tolstring(L, -1, &strlen);
jbe@92 445 while (handle->writeqoff < strlen) {
jbe@103 446 if (
jbe@132 447 strlen - handle->writeqoff <
jbe@103 448 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 449 ) {
jbe@103 450 memcpy(
jbe@103 451 handle->writebuf + handle->writebufin,
jbe@103 452 str + handle->writeqoff,
jbe@103 453 strlen - handle->writeqoff
jbe@103 454 );
jbe@103 455 handle->writebufin += strlen - handle->writeqoff;
jbe@80 456 break;
jbe@80 457 } else {
jbe@103 458 memcpy(
jbe@103 459 handle->writebuf + handle->writebufin,
jbe@103 460 str + handle->writeqoff,
jbe@103 461 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 462 );
jbe@103 463 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 464 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 465 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 466 written = write(
jbe@103 467 handle->fd,
jbe@103 468 handle->writebuf + handle->writebufout,
jbe@103 469 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 470 );
jbe@103 471 if (written < 0) {
jbe@81 472 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 473 goto moonbr_io_write_impl_block;
jbe@81 474 } else if (errno != EINTR) {
jbe@80 475 moonbr_io_errmsg();
jbe@80 476 lua_pushnil(L);
jbe@80 477 lua_pushstring(L, errmsg);
jbe@80 478 return 2;
jbe@80 479 }
jbe@103 480 } else {
jbe@103 481 handle->writebufout += written;
jbe@103 482 handle->writeleft -= written;
jbe@133 483 if (handle->flushedleft) {
jbe@133 484 if (written >= handle->flushedleft) {
jbe@133 485 handle->flushedleft = 0;
jbe@133 486 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 487 } else {
jbe@133 488 handle->flushedleft -= written;
jbe@133 489 }
jbe@133 490 }
jbe@80 491 }
jbe@80 492 }
jbe@103 493 handle->writebufin = 0;
jbe@103 494 handle->writebufout = 0;
jbe@80 495 }
jbe@80 496 }
jbe@81 497 handle->writeqoff = 0;
jbe@81 498 lua_pop(L, 1);
jbe@81 499 lua_pushnil(L);
jbe@83 500 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 501 }
jbe@132 502 while (handle->flushedleft) {
jbe@133 503 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 504 written = write(
jbe@132 505 handle->fd,
jbe@132 506 handle->writebuf + handle->writebufout,
jbe@132 507 handle->writebufin - handle->writebufout
jbe@132 508 );
jbe@132 509 if (written < 0) {
jbe@132 510 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 511 goto moonbr_io_write_impl_block;
jbe@132 512 } else if (errno != EINTR) {
jbe@132 513 moonbr_io_errmsg();
jbe@132 514 lua_pushnil(L);
jbe@132 515 lua_pushstring(L, errmsg);
jbe@132 516 return 2;
jbe@81 517 }
jbe@132 518 } else {
jbe@132 519 handle->writebufout += written;
jbe@132 520 handle->writeleft -= written;
jbe@133 521 if (handle->flushedleft) {
jbe@133 522 if (written >= handle->flushedleft) {
jbe@133 523 handle->flushedleft = 0;
jbe@133 524 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 525 } else {
jbe@133 526 handle->flushedleft -= written;
jbe@133 527 }
jbe@133 528 }
jbe@81 529 }
jbe@132 530 }
jbe@132 531 if (handle->writebufout == handle->writebufin) {
jbe@103 532 handle->writebufin = 0;
jbe@103 533 handle->writebufout = 0;
jbe@81 534 }
jbe@103 535 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 536 else lua_pushvalue(L, 1);
jbe@103 537 handle->writeerr = 0;
jbe@80 538 return 1;
jbe@81 539 moonbr_io_write_impl_block:
jbe@91 540 lua_pushinteger(L, handle->writeleft);
jbe@103 541 handle->writeerr = 0;
jbe@81 542 return 1;
jbe@81 543 }
jbe@81 544
jbe@81 545 static int moonbr_io_write(lua_State *L) {
jbe@81 546 return moonbr_io_write_impl(L, 0, 0);
jbe@81 547 }
jbe@81 548
jbe@81 549 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 550 return moonbr_io_write_impl(L, 1, 0);
jbe@80 551 }
jbe@80 552
jbe@80 553 static int moonbr_io_flush(lua_State *L) {
jbe@81 554 return moonbr_io_write_impl(L, 0, 1);
jbe@81 555 }
jbe@81 556
jbe@81 557 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 558 return moonbr_io_write_impl(L, 1, 1);
jbe@80 559 }
jbe@80 560
jbe@145 561 #if LUA_VERSION_NUM >= 503
jbe@145 562 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 563 #else
jbe@145 564 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 565 #endif
jbe@145 566 while (1) {
jbe@145 567 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 568 lua_pushvalue(L, 1);
jbe@145 569 lua_call(L, 1, 2);
jbe@145 570 if (lua_isnil(L, -2)) return 2;
jbe@145 571 if (!lua_tointeger(L, -2)) {
jbe@145 572 lua_pushvalue(L, 1);
jbe@145 573 return 1;
jbe@145 574 }
jbe@145 575 lua_pop(L, 2);
jbe@145 576 lua_pushvalue(L, 2);
jbe@152 577 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 578 }
jbe@145 579 }
jbe@145 580
jbe@145 581 static int moonbr_io_write_call(lua_State *L) {
jbe@145 582 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 583 lua_insert(L, 3);
jbe@145 584 lua_pushvalue(L, 1);
jbe@145 585 lua_insert(L, 4);
jbe@145 586 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 587 if (lua_isnil(L, -2)) return 2;
jbe@145 588 if (!lua_tointeger(L, -2)) {
jbe@145 589 lua_pushvalue(L, 1);
jbe@145 590 return 1;
jbe@145 591 }
jbe@145 592 #if LUA_VERSION_NUM >= 503
jbe@145 593 return moonbr_io_write_cont(L, 0, 0);
jbe@145 594 #else
jbe@145 595 return moonbr_io_write_cont(L);
jbe@145 596 #endif
jbe@145 597 }
jbe@145 598
jbe@145 599 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 600
jbe@145 601 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 602 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 603 lua_insert(L, 3);
jbe@145 604 lua_pushvalue(L, 1);
jbe@145 605 lua_insert(L, 4);
jbe@145 606 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 607 if (lua_isnil(L, -2)) return 2;
jbe@145 608 if (!lua_tointeger(L, -2)) {
jbe@145 609 lua_pushvalue(L, 1);
jbe@145 610 return 1;
jbe@145 611 }
jbe@145 612 #if LUA_VERSION_NUM >= 503
jbe@145 613 return moonbr_io_write_cont(L, 0, 0);
jbe@145 614 #else
jbe@145 615 return moonbr_io_write_cont(L);
jbe@145 616 #endif
jbe@145 617 }
jbe@145 618
jbe@145 619 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 620
jbe@88 621 static int moonbr_io_finish(lua_State *L) {
jbe@88 622 moonbr_io_handle_t *handle;
jbe@88 623 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 624 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 625 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 626 if (handle->writeleft) {
jbe@94 627 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 628 lua_pushvalue(L, 1);
jbe@116 629 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 630 handle->finished = 1;
jbe@116 631 lua_error(L);
jbe@116 632 }
jbe@94 633 if (!lua_toboolean(L, -2)) {
jbe@94 634 handle->finished = 1;
jbe@94 635 return 2;
jbe@88 636 }
jbe@94 637 }
jbe@94 638 handle->finished = 1;
jbe@107 639 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 640 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 641 moonbr_io_errmsg();
jbe@88 642 lua_pushnil(L);
jbe@88 643 lua_pushstring(L, errmsg);
jbe@88 644 return 2;
jbe@88 645 }
jbe@94 646 } else {
jbe@94 647 if (close(handle->fd)) {
jbe@94 648 moonbr_io_errmsg();
jbe@94 649 handle->fd = -1;
jbe@94 650 lua_pushnil(L);
jbe@94 651 lua_pushstring(L, errmsg);
jbe@94 652 return 2;
jbe@94 653 }
jbe@94 654 handle->fd = -1; /* fake EOF on read */
jbe@88 655 }
jbe@88 656 lua_pushboolean(L, 1);
jbe@88 657 return 1;
jbe@88 658 }
jbe@88 659
jbe@94 660 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 661 moonbr_io_handle_t *handle;
jbe@83 662 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 663 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 664 if (!reset) {
jbe@87 665 if (handle->writeleft) {
jbe@87 666 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 667 lua_pushvalue(L, 1);
jbe@116 668 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 669 handle->closed = 1;
jbe@116 670 close(handle->fd);
jbe@116 671 handle->fd = -1;
jbe@116 672 lua_error(L);
jbe@116 673 }
jbe@129 674 handle->closed = 1;
jbe@87 675 if (!lua_toboolean(L, -2)) {
jbe@87 676 close(handle->fd);
jbe@87 677 handle->fd = -1;
jbe@87 678 return 2;
jbe@87 679 }
jbe@129 680 } else {
jbe@129 681 handle->closed = 1;
jbe@129 682 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 683 }
jbe@129 684 } else {
jbe@129 685 handle->closed = 1;
jbe@83 686 }
jbe@94 687 if (handle->fd >= 0) {
jbe@94 688 if (close(handle->fd)) {
jbe@94 689 moonbr_io_errmsg();
jbe@94 690 handle->fd = -1;
jbe@94 691 lua_pushnil(L);
jbe@94 692 lua_pushstring(L, errmsg);
jbe@94 693 return 2;
jbe@94 694 }
jbe@104 695 handle->fd = -1;
jbe@83 696 }
jbe@83 697 lua_pushboolean(L, 1);
jbe@83 698 return 1;
jbe@84 699
jbe@83 700 }
jbe@83 701
jbe@94 702 static int moonbr_io_close(lua_State *L) {
jbe@94 703 return moonbr_io_close_impl(L, 0);
jbe@94 704 }
jbe@94 705
jbe@84 706 static int moonbr_io_reset(lua_State *L) {
jbe@94 707 return moonbr_io_close_impl(L, 1);
jbe@84 708 }
jbe@84 709
jbe@108 710 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 711 moonbr_io_handle_t *handle;
jbe@88 712 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 713 if (handle->fd >= 0) {
jbe@88 714 lua_pushcfunction(L, moonbr_io_close);
jbe@88 715 lua_pushvalue(L, 1);
jbe@88 716 lua_pushinteger(L, 0);
jbe@88 717 lua_call(L, 2, 0);
jbe@88 718 }
jbe@88 719 return 0;
jbe@88 720 }
jbe@88 721
jbe@100 722 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 723 moonbr_io_handle_t *handle;
jbe@88 724 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 725 if (!handle->closed) {
jbe@100 726 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 727 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 728 lua_call(L, 1, 0);
jbe@88 729 }
jbe@88 730 }
jbe@88 731
jbe@107 732 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 733 moonbr_io_handle_t *handle;
jbe@107 734 struct sockaddr addr;
jbe@107 735 socklen_t addrlen;
jbe@79 736 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 737 handle->fd = fd;
jbe@107 738 addrlen = sizeof(addr);
jbe@107 739 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 740 if (errno != ENOTSOCK) {
jbe@107 741 moonbr_io_errmsg();
jbe@107 742 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 743 }
jbe@107 744 handle->issock = 0;
jbe@107 745 } else {
jbe@107 746 handle->issock = 1;
jbe@107 747 handle->addrfam = addr.sa_family;
jbe@107 748 }
jbe@94 749 handle->finished = 0;
jbe@94 750 handle->closed = 0;
jbe@81 751 handle->nonblocking = -1;
jbe@95 752 handle->nopush = -1;
jbe@85 753 handle->readerr = 0;
jbe@105 754 handle->readbufin = 0;
jbe@105 755 handle->readbufout = 0;
jbe@81 756 handle->writeerr = 0;
jbe@81 757 handle->writeleft = 0;
jbe@132 758 handle->flushedleft = 0;
jbe@83 759 handle->writeqin = 0;
jbe@83 760 handle->writeqout = 0;
jbe@81 761 handle->writeqoff = 0;
jbe@103 762 handle->writebufin = 0;
jbe@103 763 handle->writebufout = 0;
jbe@87 764 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 765 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 766 lua_setmetatable(L, -2);
jbe@79 767 lua_newtable(L); // uservalue
jbe@81 768 lua_newtable(L);
jbe@103 769 lua_setfield(L, -2, "writequeue");
jbe@79 770 lua_newtable(L); // public
jbe@107 771 if (handle->addrfam == AF_INET6) {
jbe@107 772 struct sockaddr_in6 addr_in6;
jbe@107 773 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 774 const char *addrstr;
jbe@107 775 addrlen = sizeof(addr_in6);
jbe@107 776 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 777 moonbr_io_errmsg();
jbe@107 778 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 779 }
jbe@107 780 if (addrlen > sizeof(addr_in6)) {
jbe@107 781 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 782 }
jbe@107 783 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 784 if (!addrstr) {
jbe@107 785 moonbr_io_errmsg();
jbe@107 786 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 787 } else {
jbe@107 788 lua_pushstring(L, addrstr);
jbe@107 789 lua_setfield(L, -2, "local_ip6");
jbe@107 790 }
jbe@107 791 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 792 lua_setfield(L, -2, "local_tcpport");
jbe@107 793 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 794 moonbr_io_errmsg();
jbe@107 795 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 796 }
jbe@107 797 if (addrlen > sizeof(addr_in6)) {
jbe@107 798 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 799 }
jbe@107 800 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 801 if (!addrstr) {
jbe@107 802 moonbr_io_errmsg();
jbe@107 803 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 804 } else {
jbe@107 805 lua_pushstring(L, addrstr);
jbe@107 806 lua_setfield(L, -2, "remote_ip6");
jbe@107 807 }
jbe@107 808 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 809 lua_setfield(L, -2, "remote_tcpport");
jbe@107 810 } else if (handle->addrfam == AF_INET) {
jbe@107 811 struct sockaddr_in addr_in;
jbe@107 812 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 813 const char *addrstr;
jbe@107 814 addrlen = sizeof(addr_in);
jbe@107 815 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 816 moonbr_io_errmsg();
jbe@107 817 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 818 }
jbe@107 819 if (addrlen > sizeof(addr_in)) {
jbe@107 820 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 821 }
jbe@107 822 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 823 if (!addrstr) {
jbe@107 824 moonbr_io_errmsg();
jbe@107 825 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 826 } else {
jbe@107 827 lua_pushstring(L, addrstr);
jbe@107 828 lua_setfield(L, -2, "local_ip4");
jbe@107 829 }
jbe@107 830 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 831 lua_setfield(L, -2, "local_tcpport");
jbe@107 832 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 833 moonbr_io_errmsg();
jbe@107 834 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 835 }
jbe@107 836 if (addrlen > sizeof(addr_in)) {
jbe@107 837 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 838 }
jbe@107 839 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 840 if (!addrstr) {
jbe@107 841 moonbr_io_errmsg();
jbe@107 842 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 843 } else {
jbe@107 844 lua_pushstring(L, addrstr);
jbe@107 845 lua_setfield(L, -2, "remote_ip4");
jbe@107 846 }
jbe@107 847 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 848 lua_setfield(L, -2, "remote_tcpport");
jbe@107 849 }
jbe@79 850 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 851 lua_setmetatable(L, -2);
jbe@79 852 lua_setfield(L, -2, "public");
jbe@79 853 lua_setuservalue(L, -2);
jbe@79 854 }
jbe@79 855
jbe@79 856 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 857 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 858 lua_getuservalue(L, 1);
jbe@79 859 lua_getfield(L, -1, "public");
jbe@79 860 lua_pushvalue(L, 2);
jbe@79 861 lua_gettable(L, -2);
jbe@79 862 return 1;
jbe@79 863 }
jbe@79 864
jbe@79 865 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 866 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 867 lua_getuservalue(L, 1);
jbe@79 868 lua_getfield(L, -1, "public");
jbe@79 869 lua_pushvalue(L, 2);
jbe@79 870 lua_pushvalue(L, 3);
jbe@79 871 lua_settable(L, -3);
jbe@79 872 return 0;
jbe@79 873 }
jbe@79 874
jbe@111 875 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 876 const char *path;
jbe@111 877 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 878 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 879 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 880 ) - 1; /* one byte for termination */
jbe@111 881 int sock;
jbe@111 882 path = luaL_checkstring(L, 1);
jbe@111 883 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 884 strcpy(sockaddr.sun_path, path);
jbe@111 885 sock = socket(
jbe@111 886 PF_LOCAL,
jbe@111 887 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 888 0
jbe@111 889 );
jbe@111 890 if (sock < 0) {
jbe@111 891 moonbr_io_errmsg();
jbe@111 892 lua_pushnil(L);
jbe@111 893 lua_pushstring(L, errmsg);
jbe@111 894 return 2;
jbe@111 895 }
jbe@111 896 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 897 if (!nonblocking && errno == EINTR) {
jbe@111 898 moonbr_io_errmsg();
jbe@111 899 close(sock);
jbe@111 900 lua_pushnil(L);
jbe@111 901 lua_pushstring(L, errmsg);
jbe@111 902 return 2;
jbe@111 903 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 904 moonbr_io_errmsg();
jbe@111 905 lua_pushnil(L);
jbe@111 906 lua_pushstring(L, errmsg);
jbe@111 907 return 2;
jbe@111 908 }
jbe@111 909 }
jbe@111 910 moonbr_io_pushhandle(L, sock);
jbe@111 911 return 1;
jbe@111 912 }
jbe@111 913
jbe@111 914 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 915 return moonbr_io_localconnect_impl(L, 0);
jbe@111 916 }
jbe@111 917
jbe@111 918 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 919 return moonbr_io_localconnect_impl(L, 1);
jbe@111 920 }
jbe@111 921
jbe@99 922 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 923 const char *host, *port;
jbe@98 924 struct addrinfo hints = { 0, };
jbe@98 925 struct addrinfo *res, *addrinfo;
jbe@98 926 int errcode;
jbe@98 927 int sock;
jbe@98 928 host = luaL_checkstring(L, 1);
jbe@98 929 port = luaL_checkstring(L, 2);
jbe@98 930 hints.ai_family = AF_UNSPEC;
jbe@98 931 hints.ai_socktype = SOCK_STREAM;
jbe@98 932 hints.ai_protocol = IPPROTO_TCP;
jbe@98 933 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 934 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 935 if (errcode) {
jbe@102 936 freeaddrinfo(res);
jbe@98 937 if (errcode == EAI_SYSTEM) {
jbe@98 938 moonbr_io_errmsg();
jbe@98 939 lua_pushnil(L);
jbe@98 940 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 941 } else {
jbe@98 942 lua_pushnil(L);
jbe@98 943 lua_pushstring(L, gai_strerror(errcode));
jbe@98 944 }
jbe@98 945 return 2;
jbe@98 946 }
jbe@98 947 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 948 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 949 }
jbe@98 950 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 951 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 952 }
jbe@98 953 addrinfo = res;
jbe@98 954 moonbr_io_tcpconnect_found:
jbe@99 955 sock = socket(
jbe@134 956 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 957 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 958 addrinfo->ai_protocol
jbe@99 959 );
jbe@98 960 if (sock < 0) {
jbe@98 961 moonbr_io_errmsg();
jbe@108 962 freeaddrinfo(res);
jbe@98 963 lua_pushnil(L);
jbe@98 964 lua_pushstring(L, errmsg);
jbe@108 965 return 2;
jbe@98 966 }
jbe@98 967 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 968 freeaddrinfo(res);
jbe@99 969 if (!nonblocking && errno == EINTR) {
jbe@99 970 moonbr_io_errmsg();
jbe@99 971 close(sock);
jbe@99 972 lua_pushnil(L);
jbe@99 973 lua_pushstring(L, errmsg);
jbe@99 974 return 2;
jbe@99 975 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 976 moonbr_io_errmsg();
jbe@99 977 lua_pushnil(L);
jbe@99 978 lua_pushstring(L, errmsg);
jbe@99 979 return 2;
jbe@99 980 }
jbe@108 981 } else {
jbe@108 982 freeaddrinfo(res);
jbe@98 983 }
jbe@107 984 moonbr_io_pushhandle(L, sock);
jbe@98 985 return 1;
jbe@98 986 }
jbe@98 987
jbe@99 988 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 989 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 990 }
jbe@99 991
jbe@99 992 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 993 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 994 }
jbe@99 995
jbe@112 996 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 997 moonbr_io_listener_t *listener;
jbe@112 998 const char *path;
jbe@118 999 struct stat sb;
jbe@112 1000 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1001 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1002 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1003 ) - 1; /* one byte for termination */
jbe@112 1004 int sock;
jbe@112 1005 path = luaL_checkstring(L, 1);
jbe@112 1006 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1007 strcpy(sockaddr.sun_path, path);
jbe@118 1008 if (stat(path, &sb) == 0) {
jbe@118 1009 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1010 }
jbe@112 1011 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1012 listener->fd = -1;
jbe@112 1013 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1014 sock = socket(
jbe@112 1015 PF_LOCAL,
jbe@112 1016 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1017 0
jbe@112 1018 );
jbe@112 1019 if (sock < 0) {
jbe@112 1020 moonbr_io_errmsg();
jbe@112 1021 lua_pushnil(L);
jbe@112 1022 lua_pushstring(L, errmsg);
jbe@112 1023 return 2;
jbe@112 1024 }
jbe@112 1025 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1026 moonbr_io_errmsg();
jbe@112 1027 close(sock);
jbe@112 1028 lua_pushnil(L);
jbe@112 1029 lua_pushstring(L, errmsg);
jbe@112 1030 return 2;
jbe@112 1031 }
jbe@112 1032 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 1033 moonbr_io_errmsg();
jbe@112 1034 close(sock);
jbe@112 1035 lua_pushnil(L);
jbe@112 1036 lua_pushstring(L, errmsg);
jbe@112 1037 return 2;
jbe@112 1038 }
jbe@112 1039 listener->fd = sock;
jbe@118 1040 listener->addrfam = AF_LOCAL;
jbe@112 1041 listener->nonblocking = -1;
jbe@112 1042 return 1;
jbe@112 1043 }
jbe@112 1044
jbe@108 1045 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1046 moonbr_io_listener_t *listener;
jbe@108 1047 const char *host, *port;
jbe@108 1048 struct addrinfo hints = { 0, };
jbe@108 1049 struct addrinfo *res, *addrinfo;
jbe@108 1050 int errcode;
jbe@108 1051 int sock;
jbe@108 1052 host = luaL_optstring(L, 1, NULL);
jbe@108 1053 port = luaL_checkstring(L, 2);
jbe@108 1054 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1055 listener->fd = -1;
jbe@108 1056 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1057 hints.ai_family = AF_UNSPEC;
jbe@108 1058 hints.ai_socktype = SOCK_STREAM;
jbe@108 1059 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1060 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1061 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1062 if (errcode) {
jbe@108 1063 freeaddrinfo(res);
jbe@108 1064 if (errcode == EAI_SYSTEM) {
jbe@108 1065 moonbr_io_errmsg();
jbe@108 1066 lua_pushnil(L);
jbe@108 1067 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1068 } else {
jbe@108 1069 lua_pushnil(L);
jbe@108 1070 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1071 }
jbe@108 1072 return 2;
jbe@108 1073 }
jbe@108 1074 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1075 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1076 }
jbe@108 1077 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1078 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1079 }
jbe@108 1080 addrinfo = res;
jbe@108 1081 moonbr_io_tcpconnect_found:
jbe@118 1082 listener->addrfam = addrinfo->ai_family;
jbe@108 1083 sock = socket(
jbe@134 1084 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1085 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1086 addrinfo->ai_protocol
jbe@108 1087 );
jbe@108 1088 if (sock < 0) {
jbe@108 1089 moonbr_io_errmsg();
jbe@108 1090 freeaddrinfo(res);
jbe@108 1091 lua_pushnil(L);
jbe@108 1092 lua_pushstring(L, errmsg);
jbe@108 1093 return 2;
jbe@108 1094 }
jbe@120 1095 {
jbe@120 1096 static const int reuseval = 1;
jbe@120 1097 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1098 moonbr_io_errmsg();
jbe@120 1099 freeaddrinfo(res);
jbe@120 1100 close(sock);
jbe@120 1101 lua_pushnil(L);
jbe@120 1102 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1103 return 2;
jbe@120 1104 }
jbe@120 1105 }
jbe@108 1106 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1107 moonbr_io_errmsg();
jbe@108 1108 freeaddrinfo(res);
jbe@108 1109 close(sock);
jbe@108 1110 lua_pushnil(L);
jbe@108 1111 lua_pushstring(L, errmsg);
jbe@108 1112 return 2;
jbe@108 1113 }
jbe@108 1114 freeaddrinfo(res);
jbe@108 1115 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1116 moonbr_io_errmsg();
jbe@108 1117 close(sock);
jbe@108 1118 lua_pushnil(L);
jbe@108 1119 lua_pushstring(L, errmsg);
jbe@108 1120 return 2;
jbe@108 1121 }
jbe@108 1122 listener->fd = sock;
jbe@108 1123 listener->nonblocking = -1;
jbe@108 1124 return 1;
jbe@108 1125 }
jbe@108 1126
jbe@108 1127 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1128 moonbr_io_listener_t *listener;
jbe@108 1129 int fd;
jbe@108 1130 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1131 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1132 if (listener->nonblocking != nonblocking) {
jbe@108 1133 int flags;
jbe@108 1134 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1135 if (flags == -1) {
jbe@108 1136 moonbr_io_errmsg();
jbe@108 1137 close(listener->fd);
jbe@108 1138 listener->fd = -1;
jbe@108 1139 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1140 }
jbe@108 1141 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1142 else flags &= ~O_NONBLOCK;
jbe@108 1143 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1144 moonbr_io_errmsg();
jbe@108 1145 close(listener->fd);
jbe@108 1146 listener->fd = -1;
jbe@108 1147 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1148 }
jbe@108 1149 listener->nonblocking = nonblocking;
jbe@108 1150 }
jbe@108 1151 while (1) {
jbe@108 1152 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1153 if (fd < 0) {
jbe@108 1154 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1155 lua_pushboolean(L, 0);
jbe@108 1156 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1157 return 2;
jbe@108 1158 } else if (errno != EINTR) {
jbe@108 1159 moonbr_io_errmsg();
jbe@108 1160 lua_pushnil(L);
jbe@108 1161 lua_pushstring(L, errmsg);
jbe@108 1162 return 2;
jbe@108 1163 }
jbe@108 1164 } else {
jbe@108 1165 moonbr_io_pushhandle(L, fd);
jbe@108 1166 return 1;
jbe@108 1167 }
jbe@108 1168 }
jbe@108 1169 }
jbe@108 1170
jbe@108 1171 static int moonbr_io_accept(lua_State *L) {
jbe@108 1172 return moonbr_io_accept_impl(L, 0);
jbe@108 1173 }
jbe@108 1174
jbe@108 1175 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1176 return moonbr_io_accept_impl(L, 1);
jbe@108 1177 }
jbe@108 1178
jbe@108 1179 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1180 moonbr_io_listener_t *listener;
jbe@118 1181 struct sockaddr_un addr;
jbe@118 1182 socklen_t addrlen;
jbe@118 1183 struct stat sb;
jbe@108 1184 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1185 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1186 addrlen = sizeof(addr);
jbe@118 1187 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1188 if (close(listener->fd)) {
jbe@108 1189 moonbr_io_errmsg();
jbe@108 1190 listener->fd = -1;
jbe@118 1191 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1192 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1193 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1194 }
jbe@118 1195 }
jbe@108 1196 lua_pushnil(L);
jbe@108 1197 lua_pushstring(L, errmsg);
jbe@108 1198 return 2;
jbe@108 1199 }
jbe@108 1200 listener->fd = -1;
jbe@118 1201 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1202 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1203 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1204 }
jbe@118 1205 }
jbe@108 1206 lua_pushboolean(L, 1);
jbe@108 1207 return 1;
jbe@108 1208 }
jbe@108 1209
jbe@108 1210 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1211 moonbr_io_listener_t *listener;
jbe@108 1212 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1213 if (listener->fd >= 0) close(listener->fd);
jbe@108 1214 listener->fd = -1;
jbe@108 1215 return 0;
jbe@108 1216 }
jbe@108 1217
jbe@106 1218 static int moonbr_io_poll(lua_State *L) {
jbe@106 1219 moonbr_io_handle_t *handle;
jbe@108 1220 moonbr_io_listener_t *listener;
jbe@106 1221 int fd, isnum;
jbe@106 1222 int nfds = 0;
jbe@106 1223 fd_set readfds, writefds, exceptfds;
jbe@106 1224 struct timeval timeout = {0, };
jbe@106 1225 int status;
jbe@106 1226 FD_ZERO(&readfds);
jbe@106 1227 FD_ZERO(&writefds);
jbe@106 1228 FD_ZERO(&exceptfds);
jbe@106 1229 if (!lua_isnoneornil(L, 1)) {
jbe@106 1230 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1231 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1232 if (lua_toboolean(L, -1)) {
jbe@106 1233 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1234 if (handle) {
jbe@109 1235 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1236 fd = handle->fd;
jbe@122 1237 if (
jbe@122 1238 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1239 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1240 ) {
jbe@109 1241 lua_pushboolean(L, 1);
jbe@109 1242 return 1;
jbe@109 1243 }
jbe@106 1244 } else {
jbe@108 1245 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1246 if (listener) {
jbe@108 1247 fd = listener->fd;
jbe@108 1248 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1249 } else {
jbe@108 1250 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1251 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1252 }
jbe@106 1253 }
jbe@138 1254 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1255 FD_SET(fd, &readfds);
jbe@106 1256 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1257 }
jbe@106 1258 }
jbe@106 1259 }
jbe@106 1260 if (!lua_isnoneornil(L, 2)) {
jbe@106 1261 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1262 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1263 if (lua_toboolean(L, -1)) {
jbe@106 1264 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1265 if (handle) {
jbe@109 1266 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1267 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1268 fd = handle->fd;
jbe@106 1269 } else {
jbe@108 1270 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1271 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1272 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1273 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1274 }
jbe@138 1275 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1276 FD_SET(fd, &writefds);
jbe@106 1277 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1278 }
jbe@106 1279 }
jbe@106 1280 }
jbe@106 1281 if (!lua_isnoneornil(L, 3)) {
jbe@106 1282 lua_Number n;
jbe@106 1283 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1284 if (isnum && n<0) {
jbe@146 1285 lua_pushboolean(L, 0);
jbe@146 1286 lua_pushliteral(L, "Negative timeout");
jbe@146 1287 return 2;
jbe@146 1288 } else 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@146 1300 lua_pushnil(L);
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@146 1392 lua_setfield(L, -4, "handle_pt");
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@146 1398 lua_pushvalue(L, -1);
jbe@146 1399 lua_setfield(L, -3, "handle_mt");
jbe@79 1400 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1401
jbe@108 1402 lua_newtable(L); // listener metatable
jbe@108 1403 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1404 lua_newtable(L); // listener methods
jbe@108 1405 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1406 lua_pushvalue(L, -1);
jbe@146 1407 lua_setfield(L, -4, "listener_pt");
jbe@108 1408 lua_setfield(L, -2, "__index");
jbe@146 1409 lua_pushvalue(L, -1);
jbe@146 1410 lua_setfield(L, -3, "listener_mt");
jbe@108 1411 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1412
jbe@79 1413 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1414 return 1;
jbe@79 1415
jbe@79 1416 }
jbe@79 1417

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