moonbridge

annotate moonbridge_io.c @ 146:6dfe5b424b18

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Proper treatment of zero/negative timeouts to moonbridge_io.poll(...); Make _yield methods yield singleton moonbridge_io.block as first yield value
author jbe
date Thu May 07 21:32:58 2015 +0200 (2015-05-07)
parents bd88dfa4f294
children 43387f11b096
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@146 40 char moonbr_io_block_udata = 0;
jbe@146 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@140 76 static int moonbr_io_yield(lua_State *L) {
jbe@140 77 return lua_yield(L, 0);
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@145 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@85 178 maxread = luaL_optinteger(L, 2, 0);
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@105 205 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@146 337 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@140 338 lua_pushvalue(L, 1);
jbe@140 339 lua_pushliteral(L, "r");
jbe@146 340 lua_callk(L, 3, 0, ctx, moonbr_io_read_cont);
jbe@140 341 }
jbe@140 342 if (ctx == 1) {
jbe@140 343 lua_pushvalue(L, 5);
jbe@140 344 } else {
jbe@140 345 luaL_Buffer buf;
jbe@140 346 lua_Integer i, chunkcount;
jbe@140 347 chunkcount = lua_rawlen(L, 5);
jbe@140 348 luaL_buffinit(L, &buf);
jbe@140 349 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 350 lua_rawgeti(L, 5, i);
jbe@140 351 luaL_addvalue(&buf);
jbe@140 352 }
jbe@140 353 luaL_pushresult(&buf);
jbe@140 354 }
jbe@143 355 lua_pushvalue(L, -2);
jbe@143 356 return 2;
jbe@140 357 }
jbe@140 358
jbe@140 359 static int moonbr_io_read_call(lua_State *L) {
jbe@140 360 lua_settop(L, 4);
jbe@140 361 lua_pushnil(L);
jbe@140 362 #if LUA_VERSION_NUM >= 503
jbe@140 363 return moonbr_io_read_cont(L, 0, 0);
jbe@140 364 #else
jbe@140 365 return moonbr_io_read_cont(L);
jbe@140 366 #endif
jbe@140 367 }
jbe@140 368
jbe@145 369 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 370
jbe@144 371 #if LUA_VERSION_NUM >= 503
jbe@144 372 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 373 #else
jbe@144 374 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 375 #endif
jbe@144 376 lua_Integer remaining, len;
jbe@144 377 size_t totallen = 0;
jbe@144 378 #if !(LUA_VERSION_NUM >= 503)
jbe@144 379 int ctx = 0;
jbe@144 380 lua_getctx(L, &ctx);
jbe@144 381 #endif
jbe@144 382 remaining = lua_tointeger(L, 3);
jbe@144 383 while (1) {
jbe@144 384 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 385 lua_pushvalue(L, 1);
jbe@144 386 lua_pushvalue(L, 3);
jbe@144 387 lua_pushvalue(L, 4);
jbe@144 388 lua_call(L, 3, 2);
jbe@144 389 if (lua_isnil(L, -2)) return 2;
jbe@144 390 lua_insert(L, -2);
jbe@144 391 len = lua_tointeger(L, -1);
jbe@144 392 lua_pop(L, 1);
jbe@144 393 totallen += len;
jbe@144 394 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 395 lua_pop(L, 1);
jbe@144 396 if (remaining >= 0 && len) {
jbe@144 397 remaining -= len;
jbe@144 398 lua_pushinteger(L, remaining);
jbe@144 399 lua_replace(L, 3);
jbe@144 400 }
jbe@144 401 lua_pushvalue(L, 2);
jbe@146 402 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@144 403 lua_pushvalue(L, 1);
jbe@144 404 lua_pushliteral(L, "r");
jbe@146 405 lua_callk(L, 3, 0, ctx, moonbr_io_drain_cont);
jbe@144 406 }
jbe@144 407 lua_pushinteger(L, totallen);
jbe@144 408 lua_pushvalue(L, -2);
jbe@144 409 return 2;
jbe@144 410 }
jbe@144 411
jbe@144 412 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 413 #if LUA_VERSION_NUM >= 503
jbe@144 414 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 415 #else
jbe@144 416 return moonbr_io_drain_cont(L);
jbe@144 417 #endif
jbe@144 418 }
jbe@144 419
jbe@145 420 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 421
jbe@81 422 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 423 moonbr_io_handle_t *handle;
jbe@80 424 int i, top;
jbe@80 425 const char *str;
jbe@92 426 size_t strlen;
jbe@103 427 ssize_t written;
jbe@80 428 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 429 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 430 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 431 if (handle->writeerr) {
jbe@80 432 lua_pushnil(L);
jbe@80 433 lua_pushliteral(L, "Previous write error");
jbe@80 434 return 2;
jbe@80 435 }
jbe@103 436 handle->writeerr = 1;
jbe@81 437 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 438 top = lua_gettop(L);
jbe@81 439 lua_getuservalue(L, 1);
jbe@103 440 lua_getfield(L, -1, "writequeue");
jbe@84 441 for (i=2; i<=top; i++) {
jbe@84 442 luaL_checklstring(L, i, &strlen);
jbe@84 443 lua_pushvalue(L, i);
jbe@84 444 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 445 handle->writeleft += strlen;
jbe@81 446 }
jbe@132 447 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 448 while (handle->writeqout != handle->writeqin) {
jbe@83 449 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 450 str = lua_tolstring(L, -1, &strlen);
jbe@92 451 while (handle->writeqoff < strlen) {
jbe@103 452 if (
jbe@132 453 strlen - handle->writeqoff <
jbe@103 454 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 455 ) {
jbe@103 456 memcpy(
jbe@103 457 handle->writebuf + handle->writebufin,
jbe@103 458 str + handle->writeqoff,
jbe@103 459 strlen - handle->writeqoff
jbe@103 460 );
jbe@103 461 handle->writebufin += strlen - handle->writeqoff;
jbe@80 462 break;
jbe@80 463 } else {
jbe@103 464 memcpy(
jbe@103 465 handle->writebuf + handle->writebufin,
jbe@103 466 str + handle->writeqoff,
jbe@103 467 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 468 );
jbe@103 469 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 470 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 471 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 472 written = write(
jbe@103 473 handle->fd,
jbe@103 474 handle->writebuf + handle->writebufout,
jbe@103 475 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 476 );
jbe@103 477 if (written < 0) {
jbe@81 478 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 479 goto moonbr_io_write_impl_block;
jbe@81 480 } else if (errno != EINTR) {
jbe@80 481 moonbr_io_errmsg();
jbe@80 482 lua_pushnil(L);
jbe@80 483 lua_pushstring(L, errmsg);
jbe@80 484 return 2;
jbe@80 485 }
jbe@103 486 } else {
jbe@103 487 handle->writebufout += written;
jbe@103 488 handle->writeleft -= written;
jbe@133 489 if (handle->flushedleft) {
jbe@133 490 if (written >= handle->flushedleft) {
jbe@133 491 handle->flushedleft = 0;
jbe@133 492 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 493 } else {
jbe@133 494 handle->flushedleft -= written;
jbe@133 495 }
jbe@133 496 }
jbe@80 497 }
jbe@80 498 }
jbe@103 499 handle->writebufin = 0;
jbe@103 500 handle->writebufout = 0;
jbe@80 501 }
jbe@80 502 }
jbe@81 503 handle->writeqoff = 0;
jbe@81 504 lua_pop(L, 1);
jbe@81 505 lua_pushnil(L);
jbe@83 506 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 507 }
jbe@132 508 while (handle->flushedleft) {
jbe@133 509 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 510 written = write(
jbe@132 511 handle->fd,
jbe@132 512 handle->writebuf + handle->writebufout,
jbe@132 513 handle->writebufin - handle->writebufout
jbe@132 514 );
jbe@132 515 if (written < 0) {
jbe@132 516 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 517 goto moonbr_io_write_impl_block;
jbe@132 518 } else if (errno != EINTR) {
jbe@132 519 moonbr_io_errmsg();
jbe@132 520 lua_pushnil(L);
jbe@132 521 lua_pushstring(L, errmsg);
jbe@132 522 return 2;
jbe@81 523 }
jbe@132 524 } else {
jbe@132 525 handle->writebufout += written;
jbe@132 526 handle->writeleft -= written;
jbe@133 527 if (handle->flushedleft) {
jbe@133 528 if (written >= handle->flushedleft) {
jbe@133 529 handle->flushedleft = 0;
jbe@133 530 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 531 } else {
jbe@133 532 handle->flushedleft -= written;
jbe@133 533 }
jbe@133 534 }
jbe@81 535 }
jbe@132 536 }
jbe@132 537 if (handle->writebufout == handle->writebufin) {
jbe@103 538 handle->writebufin = 0;
jbe@103 539 handle->writebufout = 0;
jbe@81 540 }
jbe@103 541 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 542 else lua_pushvalue(L, 1);
jbe@103 543 handle->writeerr = 0;
jbe@80 544 return 1;
jbe@81 545 moonbr_io_write_impl_block:
jbe@91 546 lua_pushinteger(L, handle->writeleft);
jbe@103 547 handle->writeerr = 0;
jbe@81 548 return 1;
jbe@81 549 }
jbe@81 550
jbe@81 551 static int moonbr_io_write(lua_State *L) {
jbe@81 552 return moonbr_io_write_impl(L, 0, 0);
jbe@81 553 }
jbe@81 554
jbe@81 555 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 556 return moonbr_io_write_impl(L, 1, 0);
jbe@80 557 }
jbe@80 558
jbe@80 559 static int moonbr_io_flush(lua_State *L) {
jbe@81 560 return moonbr_io_write_impl(L, 0, 1);
jbe@81 561 }
jbe@81 562
jbe@81 563 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 564 return moonbr_io_write_impl(L, 1, 1);
jbe@80 565 }
jbe@80 566
jbe@145 567 #if LUA_VERSION_NUM >= 503
jbe@145 568 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 569 #else
jbe@145 570 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 571 #endif
jbe@145 572 while (1) {
jbe@145 573 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 574 lua_pushvalue(L, 1);
jbe@145 575 lua_call(L, 1, 2);
jbe@145 576 if (lua_isnil(L, -2)) return 2;
jbe@145 577 if (!lua_tointeger(L, -2)) {
jbe@145 578 lua_pushvalue(L, 1);
jbe@145 579 return 1;
jbe@145 580 }
jbe@145 581 lua_pop(L, 2);
jbe@145 582 lua_pushvalue(L, 2);
jbe@146 583 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@145 584 lua_pushvalue(L, 1);
jbe@145 585 lua_pushliteral(L, "w");
jbe@146 586 lua_callk(L, 3, 0, 0, moonbr_io_write_cont);
jbe@145 587 }
jbe@145 588 }
jbe@145 589
jbe@145 590 static int moonbr_io_write_call(lua_State *L) {
jbe@145 591 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 592 lua_insert(L, 3);
jbe@145 593 lua_pushvalue(L, 1);
jbe@145 594 lua_insert(L, 4);
jbe@145 595 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 596 if (lua_isnil(L, -2)) return 2;
jbe@145 597 if (!lua_tointeger(L, -2)) {
jbe@145 598 lua_pushvalue(L, 1);
jbe@145 599 return 1;
jbe@145 600 }
jbe@145 601 #if LUA_VERSION_NUM >= 503
jbe@145 602 return moonbr_io_write_cont(L, 0, 0);
jbe@145 603 #else
jbe@145 604 return moonbr_io_write_cont(L);
jbe@145 605 #endif
jbe@145 606 }
jbe@145 607
jbe@145 608 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 609
jbe@145 610 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 611 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 612 lua_insert(L, 3);
jbe@145 613 lua_pushvalue(L, 1);
jbe@145 614 lua_insert(L, 4);
jbe@145 615 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 616 if (lua_isnil(L, -2)) return 2;
jbe@145 617 if (!lua_tointeger(L, -2)) {
jbe@145 618 lua_pushvalue(L, 1);
jbe@145 619 return 1;
jbe@145 620 }
jbe@145 621 #if LUA_VERSION_NUM >= 503
jbe@145 622 return moonbr_io_write_cont(L, 0, 0);
jbe@145 623 #else
jbe@145 624 return moonbr_io_write_cont(L);
jbe@145 625 #endif
jbe@145 626 }
jbe@145 627
jbe@145 628 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 629
jbe@88 630 static int moonbr_io_finish(lua_State *L) {
jbe@88 631 moonbr_io_handle_t *handle;
jbe@88 632 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 633 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 634 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 635 if (handle->writeleft) {
jbe@94 636 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 637 lua_pushvalue(L, 1);
jbe@116 638 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 639 handle->finished = 1;
jbe@116 640 lua_error(L);
jbe@116 641 }
jbe@94 642 if (!lua_toboolean(L, -2)) {
jbe@94 643 handle->finished = 1;
jbe@94 644 return 2;
jbe@88 645 }
jbe@94 646 }
jbe@94 647 handle->finished = 1;
jbe@107 648 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 649 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 650 moonbr_io_errmsg();
jbe@88 651 lua_pushnil(L);
jbe@88 652 lua_pushstring(L, errmsg);
jbe@88 653 return 2;
jbe@88 654 }
jbe@94 655 } else {
jbe@94 656 if (close(handle->fd)) {
jbe@94 657 moonbr_io_errmsg();
jbe@94 658 handle->fd = -1;
jbe@94 659 lua_pushnil(L);
jbe@94 660 lua_pushstring(L, errmsg);
jbe@94 661 return 2;
jbe@94 662 }
jbe@94 663 handle->fd = -1; /* fake EOF on read */
jbe@88 664 }
jbe@88 665 lua_pushboolean(L, 1);
jbe@88 666 return 1;
jbe@88 667 }
jbe@88 668
jbe@94 669 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 670 moonbr_io_handle_t *handle;
jbe@83 671 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 672 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 673 if (!reset) {
jbe@87 674 if (handle->writeleft) {
jbe@87 675 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 676 lua_pushvalue(L, 1);
jbe@116 677 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 678 handle->closed = 1;
jbe@116 679 close(handle->fd);
jbe@116 680 handle->fd = -1;
jbe@116 681 lua_error(L);
jbe@116 682 }
jbe@129 683 handle->closed = 1;
jbe@87 684 if (!lua_toboolean(L, -2)) {
jbe@87 685 close(handle->fd);
jbe@87 686 handle->fd = -1;
jbe@87 687 return 2;
jbe@87 688 }
jbe@129 689 } else {
jbe@129 690 handle->closed = 1;
jbe@129 691 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 692 }
jbe@129 693 } else {
jbe@129 694 handle->closed = 1;
jbe@83 695 }
jbe@94 696 if (handle->fd >= 0) {
jbe@94 697 if (close(handle->fd)) {
jbe@94 698 moonbr_io_errmsg();
jbe@94 699 handle->fd = -1;
jbe@94 700 lua_pushnil(L);
jbe@94 701 lua_pushstring(L, errmsg);
jbe@94 702 return 2;
jbe@94 703 }
jbe@104 704 handle->fd = -1;
jbe@83 705 }
jbe@83 706 lua_pushboolean(L, 1);
jbe@83 707 return 1;
jbe@84 708
jbe@83 709 }
jbe@83 710
jbe@94 711 static int moonbr_io_close(lua_State *L) {
jbe@94 712 return moonbr_io_close_impl(L, 0);
jbe@94 713 }
jbe@94 714
jbe@84 715 static int moonbr_io_reset(lua_State *L) {
jbe@94 716 return moonbr_io_close_impl(L, 1);
jbe@84 717 }
jbe@84 718
jbe@108 719 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 720 moonbr_io_handle_t *handle;
jbe@88 721 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 722 if (handle->fd >= 0) {
jbe@88 723 lua_pushcfunction(L, moonbr_io_close);
jbe@88 724 lua_pushvalue(L, 1);
jbe@88 725 lua_pushinteger(L, 0);
jbe@88 726 lua_call(L, 2, 0);
jbe@88 727 }
jbe@88 728 return 0;
jbe@88 729 }
jbe@88 730
jbe@100 731 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 732 moonbr_io_handle_t *handle;
jbe@88 733 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 734 if (!handle->closed) {
jbe@100 735 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 736 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 737 lua_call(L, 1, 0);
jbe@88 738 }
jbe@88 739 }
jbe@88 740
jbe@107 741 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 742 moonbr_io_handle_t *handle;
jbe@107 743 struct sockaddr addr;
jbe@107 744 socklen_t addrlen;
jbe@79 745 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 746 handle->fd = fd;
jbe@107 747 addrlen = sizeof(addr);
jbe@107 748 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 749 if (errno != ENOTSOCK) {
jbe@107 750 moonbr_io_errmsg();
jbe@107 751 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 752 }
jbe@107 753 handle->issock = 0;
jbe@107 754 } else {
jbe@107 755 handle->issock = 1;
jbe@107 756 handle->addrfam = addr.sa_family;
jbe@107 757 }
jbe@94 758 handle->finished = 0;
jbe@94 759 handle->closed = 0;
jbe@81 760 handle->nonblocking = -1;
jbe@95 761 handle->nopush = -1;
jbe@85 762 handle->readerr = 0;
jbe@105 763 handle->readbufin = 0;
jbe@105 764 handle->readbufout = 0;
jbe@81 765 handle->writeerr = 0;
jbe@81 766 handle->writeleft = 0;
jbe@132 767 handle->flushedleft = 0;
jbe@83 768 handle->writeqin = 0;
jbe@83 769 handle->writeqout = 0;
jbe@81 770 handle->writeqoff = 0;
jbe@103 771 handle->writebufin = 0;
jbe@103 772 handle->writebufout = 0;
jbe@87 773 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 774 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 775 lua_setmetatable(L, -2);
jbe@79 776 lua_newtable(L); // uservalue
jbe@81 777 lua_newtable(L);
jbe@103 778 lua_setfield(L, -2, "writequeue");
jbe@79 779 lua_newtable(L); // public
jbe@107 780 if (handle->addrfam == AF_INET6) {
jbe@107 781 struct sockaddr_in6 addr_in6;
jbe@107 782 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 783 const char *addrstr;
jbe@107 784 addrlen = sizeof(addr_in6);
jbe@107 785 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 786 moonbr_io_errmsg();
jbe@107 787 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 788 }
jbe@107 789 if (addrlen > sizeof(addr_in6)) {
jbe@107 790 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 791 }
jbe@107 792 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 793 if (!addrstr) {
jbe@107 794 moonbr_io_errmsg();
jbe@107 795 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 796 } else {
jbe@107 797 lua_pushstring(L, addrstr);
jbe@107 798 lua_setfield(L, -2, "local_ip6");
jbe@107 799 }
jbe@107 800 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 801 lua_setfield(L, -2, "local_tcpport");
jbe@107 802 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 803 moonbr_io_errmsg();
jbe@107 804 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 805 }
jbe@107 806 if (addrlen > sizeof(addr_in6)) {
jbe@107 807 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 808 }
jbe@107 809 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 810 if (!addrstr) {
jbe@107 811 moonbr_io_errmsg();
jbe@107 812 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 813 } else {
jbe@107 814 lua_pushstring(L, addrstr);
jbe@107 815 lua_setfield(L, -2, "remote_ip6");
jbe@107 816 }
jbe@107 817 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 818 lua_setfield(L, -2, "remote_tcpport");
jbe@107 819 } else if (handle->addrfam == AF_INET) {
jbe@107 820 struct sockaddr_in addr_in;
jbe@107 821 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 822 const char *addrstr;
jbe@107 823 addrlen = sizeof(addr_in);
jbe@107 824 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 825 moonbr_io_errmsg();
jbe@107 826 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 827 }
jbe@107 828 if (addrlen > sizeof(addr_in)) {
jbe@107 829 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 830 }
jbe@107 831 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 832 if (!addrstr) {
jbe@107 833 moonbr_io_errmsg();
jbe@107 834 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 835 } else {
jbe@107 836 lua_pushstring(L, addrstr);
jbe@107 837 lua_setfield(L, -2, "local_ip4");
jbe@107 838 }
jbe@107 839 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 840 lua_setfield(L, -2, "local_tcpport");
jbe@107 841 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 842 moonbr_io_errmsg();
jbe@107 843 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 844 }
jbe@107 845 if (addrlen > sizeof(addr_in)) {
jbe@107 846 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 847 }
jbe@107 848 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 849 if (!addrstr) {
jbe@107 850 moonbr_io_errmsg();
jbe@107 851 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 852 } else {
jbe@107 853 lua_pushstring(L, addrstr);
jbe@107 854 lua_setfield(L, -2, "remote_ip4");
jbe@107 855 }
jbe@107 856 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 857 lua_setfield(L, -2, "remote_tcpport");
jbe@107 858 }
jbe@79 859 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 860 lua_setmetatable(L, -2);
jbe@79 861 lua_setfield(L, -2, "public");
jbe@79 862 lua_setuservalue(L, -2);
jbe@79 863 }
jbe@79 864
jbe@79 865 static int moonbr_io_handleindex(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_gettable(L, -2);
jbe@79 871 return 1;
jbe@79 872 }
jbe@79 873
jbe@79 874 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 875 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 876 lua_getuservalue(L, 1);
jbe@79 877 lua_getfield(L, -1, "public");
jbe@79 878 lua_pushvalue(L, 2);
jbe@79 879 lua_pushvalue(L, 3);
jbe@79 880 lua_settable(L, -3);
jbe@79 881 return 0;
jbe@79 882 }
jbe@79 883
jbe@111 884 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 885 const char *path;
jbe@111 886 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 887 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 888 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 889 ) - 1; /* one byte for termination */
jbe@111 890 int sock;
jbe@111 891 path = luaL_checkstring(L, 1);
jbe@111 892 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 893 strcpy(sockaddr.sun_path, path);
jbe@111 894 sock = socket(
jbe@111 895 PF_LOCAL,
jbe@111 896 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 897 0
jbe@111 898 );
jbe@111 899 if (sock < 0) {
jbe@111 900 moonbr_io_errmsg();
jbe@111 901 lua_pushnil(L);
jbe@111 902 lua_pushstring(L, errmsg);
jbe@111 903 return 2;
jbe@111 904 }
jbe@111 905 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 906 if (!nonblocking && errno == EINTR) {
jbe@111 907 moonbr_io_errmsg();
jbe@111 908 close(sock);
jbe@111 909 lua_pushnil(L);
jbe@111 910 lua_pushstring(L, errmsg);
jbe@111 911 return 2;
jbe@111 912 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 913 moonbr_io_errmsg();
jbe@111 914 lua_pushnil(L);
jbe@111 915 lua_pushstring(L, errmsg);
jbe@111 916 return 2;
jbe@111 917 }
jbe@111 918 }
jbe@111 919 moonbr_io_pushhandle(L, sock);
jbe@111 920 return 1;
jbe@111 921 }
jbe@111 922
jbe@111 923 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 924 return moonbr_io_localconnect_impl(L, 0);
jbe@111 925 }
jbe@111 926
jbe@111 927 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 928 return moonbr_io_localconnect_impl(L, 1);
jbe@111 929 }
jbe@111 930
jbe@99 931 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 932 const char *host, *port;
jbe@98 933 struct addrinfo hints = { 0, };
jbe@98 934 struct addrinfo *res, *addrinfo;
jbe@98 935 int errcode;
jbe@98 936 int sock;
jbe@98 937 host = luaL_checkstring(L, 1);
jbe@98 938 port = luaL_checkstring(L, 2);
jbe@98 939 hints.ai_family = AF_UNSPEC;
jbe@98 940 hints.ai_socktype = SOCK_STREAM;
jbe@98 941 hints.ai_protocol = IPPROTO_TCP;
jbe@98 942 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 943 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 944 if (errcode) {
jbe@102 945 freeaddrinfo(res);
jbe@98 946 if (errcode == EAI_SYSTEM) {
jbe@98 947 moonbr_io_errmsg();
jbe@98 948 lua_pushnil(L);
jbe@98 949 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 950 } else {
jbe@98 951 lua_pushnil(L);
jbe@98 952 lua_pushstring(L, gai_strerror(errcode));
jbe@98 953 }
jbe@98 954 return 2;
jbe@98 955 }
jbe@98 956 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 957 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 958 }
jbe@98 959 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 960 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 961 }
jbe@98 962 addrinfo = res;
jbe@98 963 moonbr_io_tcpconnect_found:
jbe@99 964 sock = socket(
jbe@134 965 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 966 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 967 addrinfo->ai_protocol
jbe@99 968 );
jbe@98 969 if (sock < 0) {
jbe@98 970 moonbr_io_errmsg();
jbe@108 971 freeaddrinfo(res);
jbe@98 972 lua_pushnil(L);
jbe@98 973 lua_pushstring(L, errmsg);
jbe@108 974 return 2;
jbe@98 975 }
jbe@98 976 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 977 freeaddrinfo(res);
jbe@99 978 if (!nonblocking && errno == EINTR) {
jbe@99 979 moonbr_io_errmsg();
jbe@99 980 close(sock);
jbe@99 981 lua_pushnil(L);
jbe@99 982 lua_pushstring(L, errmsg);
jbe@99 983 return 2;
jbe@99 984 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 985 moonbr_io_errmsg();
jbe@99 986 lua_pushnil(L);
jbe@99 987 lua_pushstring(L, errmsg);
jbe@99 988 return 2;
jbe@99 989 }
jbe@108 990 } else {
jbe@108 991 freeaddrinfo(res);
jbe@98 992 }
jbe@107 993 moonbr_io_pushhandle(L, sock);
jbe@98 994 return 1;
jbe@98 995 }
jbe@98 996
jbe@99 997 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 998 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 999 }
jbe@99 1000
jbe@99 1001 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1002 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1003 }
jbe@99 1004
jbe@112 1005 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1006 moonbr_io_listener_t *listener;
jbe@112 1007 const char *path;
jbe@118 1008 struct stat sb;
jbe@112 1009 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1010 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1011 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1012 ) - 1; /* one byte for termination */
jbe@112 1013 int sock;
jbe@112 1014 path = luaL_checkstring(L, 1);
jbe@112 1015 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1016 strcpy(sockaddr.sun_path, path);
jbe@118 1017 if (stat(path, &sb) == 0) {
jbe@118 1018 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1019 }
jbe@112 1020 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1021 listener->fd = -1;
jbe@112 1022 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1023 sock = socket(
jbe@112 1024 PF_LOCAL,
jbe@112 1025 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1026 0
jbe@112 1027 );
jbe@112 1028 if (sock < 0) {
jbe@112 1029 moonbr_io_errmsg();
jbe@112 1030 lua_pushnil(L);
jbe@112 1031 lua_pushstring(L, errmsg);
jbe@112 1032 return 2;
jbe@112 1033 }
jbe@112 1034 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1035 moonbr_io_errmsg();
jbe@112 1036 close(sock);
jbe@112 1037 lua_pushnil(L);
jbe@112 1038 lua_pushstring(L, errmsg);
jbe@112 1039 return 2;
jbe@112 1040 }
jbe@112 1041 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 1042 moonbr_io_errmsg();
jbe@112 1043 close(sock);
jbe@112 1044 lua_pushnil(L);
jbe@112 1045 lua_pushstring(L, errmsg);
jbe@112 1046 return 2;
jbe@112 1047 }
jbe@112 1048 listener->fd = sock;
jbe@118 1049 listener->addrfam = AF_LOCAL;
jbe@112 1050 listener->nonblocking = -1;
jbe@112 1051 return 1;
jbe@112 1052 }
jbe@112 1053
jbe@108 1054 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1055 moonbr_io_listener_t *listener;
jbe@108 1056 const char *host, *port;
jbe@108 1057 struct addrinfo hints = { 0, };
jbe@108 1058 struct addrinfo *res, *addrinfo;
jbe@108 1059 int errcode;
jbe@108 1060 int sock;
jbe@108 1061 host = luaL_optstring(L, 1, NULL);
jbe@108 1062 port = luaL_checkstring(L, 2);
jbe@108 1063 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1064 listener->fd = -1;
jbe@108 1065 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1066 hints.ai_family = AF_UNSPEC;
jbe@108 1067 hints.ai_socktype = SOCK_STREAM;
jbe@108 1068 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1069 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1070 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1071 if (errcode) {
jbe@108 1072 freeaddrinfo(res);
jbe@108 1073 if (errcode == EAI_SYSTEM) {
jbe@108 1074 moonbr_io_errmsg();
jbe@108 1075 lua_pushnil(L);
jbe@108 1076 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1077 } else {
jbe@108 1078 lua_pushnil(L);
jbe@108 1079 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1080 }
jbe@108 1081 return 2;
jbe@108 1082 }
jbe@108 1083 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1084 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1085 }
jbe@108 1086 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1087 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1088 }
jbe@108 1089 addrinfo = res;
jbe@108 1090 moonbr_io_tcpconnect_found:
jbe@118 1091 listener->addrfam = addrinfo->ai_family;
jbe@108 1092 sock = socket(
jbe@134 1093 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1094 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1095 addrinfo->ai_protocol
jbe@108 1096 );
jbe@108 1097 if (sock < 0) {
jbe@108 1098 moonbr_io_errmsg();
jbe@108 1099 freeaddrinfo(res);
jbe@108 1100 lua_pushnil(L);
jbe@108 1101 lua_pushstring(L, errmsg);
jbe@108 1102 return 2;
jbe@108 1103 }
jbe@120 1104 {
jbe@120 1105 static const int reuseval = 1;
jbe@120 1106 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1107 moonbr_io_errmsg();
jbe@120 1108 freeaddrinfo(res);
jbe@120 1109 close(sock);
jbe@120 1110 lua_pushnil(L);
jbe@120 1111 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1112 return 2;
jbe@120 1113 }
jbe@120 1114 }
jbe@108 1115 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1116 moonbr_io_errmsg();
jbe@108 1117 freeaddrinfo(res);
jbe@108 1118 close(sock);
jbe@108 1119 lua_pushnil(L);
jbe@108 1120 lua_pushstring(L, errmsg);
jbe@108 1121 return 2;
jbe@108 1122 }
jbe@108 1123 freeaddrinfo(res);
jbe@108 1124 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1125 moonbr_io_errmsg();
jbe@108 1126 close(sock);
jbe@108 1127 lua_pushnil(L);
jbe@108 1128 lua_pushstring(L, errmsg);
jbe@108 1129 return 2;
jbe@108 1130 }
jbe@108 1131 listener->fd = sock;
jbe@108 1132 listener->nonblocking = -1;
jbe@108 1133 return 1;
jbe@108 1134 }
jbe@108 1135
jbe@108 1136 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1137 moonbr_io_listener_t *listener;
jbe@108 1138 int fd;
jbe@108 1139 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1140 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1141 if (listener->nonblocking != nonblocking) {
jbe@108 1142 int flags;
jbe@108 1143 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1144 if (flags == -1) {
jbe@108 1145 moonbr_io_errmsg();
jbe@108 1146 close(listener->fd);
jbe@108 1147 listener->fd = -1;
jbe@108 1148 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1149 }
jbe@108 1150 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1151 else flags &= ~O_NONBLOCK;
jbe@108 1152 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1153 moonbr_io_errmsg();
jbe@108 1154 close(listener->fd);
jbe@108 1155 listener->fd = -1;
jbe@108 1156 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1157 }
jbe@108 1158 listener->nonblocking = nonblocking;
jbe@108 1159 }
jbe@108 1160 while (1) {
jbe@108 1161 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1162 if (fd < 0) {
jbe@108 1163 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1164 lua_pushboolean(L, 0);
jbe@108 1165 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1166 return 2;
jbe@108 1167 } else if (errno != EINTR) {
jbe@108 1168 moonbr_io_errmsg();
jbe@108 1169 lua_pushnil(L);
jbe@108 1170 lua_pushstring(L, errmsg);
jbe@108 1171 return 2;
jbe@108 1172 }
jbe@108 1173 } else {
jbe@108 1174 moonbr_io_pushhandle(L, fd);
jbe@108 1175 return 1;
jbe@108 1176 }
jbe@108 1177 }
jbe@108 1178 }
jbe@108 1179
jbe@108 1180 static int moonbr_io_accept(lua_State *L) {
jbe@108 1181 return moonbr_io_accept_impl(L, 0);
jbe@108 1182 }
jbe@108 1183
jbe@108 1184 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1185 return moonbr_io_accept_impl(L, 1);
jbe@108 1186 }
jbe@108 1187
jbe@108 1188 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1189 moonbr_io_listener_t *listener;
jbe@118 1190 struct sockaddr_un addr;
jbe@118 1191 socklen_t addrlen;
jbe@118 1192 struct stat sb;
jbe@108 1193 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1194 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1195 addrlen = sizeof(addr);
jbe@118 1196 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1197 if (close(listener->fd)) {
jbe@108 1198 moonbr_io_errmsg();
jbe@108 1199 listener->fd = -1;
jbe@118 1200 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1201 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1202 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1203 }
jbe@118 1204 }
jbe@108 1205 lua_pushnil(L);
jbe@108 1206 lua_pushstring(L, errmsg);
jbe@108 1207 return 2;
jbe@108 1208 }
jbe@108 1209 listener->fd = -1;
jbe@118 1210 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1211 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1212 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1213 }
jbe@118 1214 }
jbe@108 1215 lua_pushboolean(L, 1);
jbe@108 1216 return 1;
jbe@108 1217 }
jbe@108 1218
jbe@108 1219 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1220 moonbr_io_listener_t *listener;
jbe@108 1221 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1222 if (listener->fd >= 0) close(listener->fd);
jbe@108 1223 listener->fd = -1;
jbe@108 1224 return 0;
jbe@108 1225 }
jbe@108 1226
jbe@106 1227 static int moonbr_io_poll(lua_State *L) {
jbe@106 1228 moonbr_io_handle_t *handle;
jbe@108 1229 moonbr_io_listener_t *listener;
jbe@106 1230 int fd, isnum;
jbe@106 1231 int nfds = 0;
jbe@106 1232 fd_set readfds, writefds, exceptfds;
jbe@106 1233 struct timeval timeout = {0, };
jbe@106 1234 int status;
jbe@106 1235 FD_ZERO(&readfds);
jbe@106 1236 FD_ZERO(&writefds);
jbe@106 1237 FD_ZERO(&exceptfds);
jbe@106 1238 if (!lua_isnoneornil(L, 1)) {
jbe@106 1239 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1240 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1241 if (lua_toboolean(L, -1)) {
jbe@106 1242 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1243 if (handle) {
jbe@109 1244 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1245 fd = handle->fd;
jbe@122 1246 if (
jbe@122 1247 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1248 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1249 ) {
jbe@109 1250 lua_pushboolean(L, 1);
jbe@109 1251 return 1;
jbe@109 1252 }
jbe@106 1253 } else {
jbe@108 1254 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1255 if (listener) {
jbe@108 1256 fd = listener->fd;
jbe@108 1257 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1258 } else {
jbe@108 1259 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1260 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1261 }
jbe@106 1262 }
jbe@138 1263 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1264 FD_SET(fd, &readfds);
jbe@106 1265 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1266 }
jbe@106 1267 }
jbe@106 1268 }
jbe@106 1269 if (!lua_isnoneornil(L, 2)) {
jbe@106 1270 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1271 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1272 if (lua_toboolean(L, -1)) {
jbe@106 1273 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1274 if (handle) {
jbe@109 1275 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1276 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1277 fd = handle->fd;
jbe@106 1278 } else {
jbe@108 1279 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1280 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1281 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1282 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1283 }
jbe@138 1284 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1285 FD_SET(fd, &writefds);
jbe@106 1286 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1287 }
jbe@106 1288 }
jbe@106 1289 }
jbe@106 1290 if (!lua_isnoneornil(L, 3)) {
jbe@106 1291 lua_Number n;
jbe@106 1292 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1293 if (isnum && n<0) {
jbe@146 1294 lua_pushboolean(L, 0);
jbe@146 1295 lua_pushliteral(L, "Negative timeout");
jbe@146 1296 return 2;
jbe@146 1297 } else if (isnum && n>=0 && n<100000000) {
jbe@106 1298 timeout.tv_sec = n;
jbe@106 1299 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1300 } else {
jbe@106 1301 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1302 }
jbe@106 1303 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1304 } else {
jbe@106 1305 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1306 }
jbe@106 1307 if (status == -1) {
jbe@106 1308 if (errno == EINTR) {
jbe@146 1309 lua_pushnil(L);
jbe@106 1310 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1311 return 2;
jbe@106 1312 } else {
jbe@106 1313 moonbr_io_errmsg();
jbe@106 1314 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1315 }
jbe@106 1316 } else if (status == 0) {
jbe@106 1317 lua_pushboolean(L, 0);
jbe@106 1318 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1319 return 2;
jbe@106 1320 } else {
jbe@106 1321 lua_pushboolean(L, 1);
jbe@106 1322 return 1;
jbe@106 1323 }
jbe@106 1324 }
jbe@106 1325
jbe@115 1326 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1327 lua_Number sub;
jbe@115 1328 struct timespec tp;
jbe@115 1329 sub = luaL_optnumber(L, 1, 0);
jbe@115 1330 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1331 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1332 }
jbe@115 1333 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1334 return 1;
jbe@115 1335 }
jbe@115 1336
jbe@79 1337 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1338 {"read", moonbr_io_read},
jbe@85 1339 {"read_nb", moonbr_io_read_nb},
jbe@140 1340 {"read_call", moonbr_io_read_call},
jbe@140 1341 {"read_yield", moonbr_io_read_yield},
jbe@86 1342 {"drain", moonbr_io_drain},
jbe@86 1343 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1344 {"drain_call", moonbr_io_drain_call},
jbe@144 1345 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1346 {"write", moonbr_io_write},
jbe@81 1347 {"write_nb", moonbr_io_write_nb},
jbe@145 1348 {"write_call", moonbr_io_write_call},
jbe@145 1349 {"write_yield", moonbr_io_write_yield},
jbe@80 1350 {"flush", moonbr_io_flush},
jbe@81 1351 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1352 {"flush_call", moonbr_io_flush_call},
jbe@145 1353 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1354 {"finish", moonbr_io_finish},
jbe@87 1355 {"close", moonbr_io_close},
jbe@85 1356 {"reset", moonbr_io_reset},
jbe@79 1357 {NULL, NULL}
jbe@79 1358 };
jbe@79 1359
jbe@79 1360 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1361 {"__index", moonbr_io_handleindex},
jbe@79 1362 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1363 {"__gc", moonbr_io_handlegc},
jbe@108 1364 {NULL, NULL}
jbe@108 1365 };
jbe@108 1366
jbe@108 1367 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1368 {"accept", moonbr_io_accept},
jbe@108 1369 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1370 {"close", moonbr_io_unlisten},
jbe@108 1371 {NULL, NULL}
jbe@108 1372 };
jbe@108 1373
jbe@108 1374 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1375 {"__gc", moonbr_io_listenergc},
jbe@79 1376 {NULL, NULL}
jbe@79 1377 };
jbe@79 1378
jbe@79 1379 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1380 {"localconnect", moonbr_io_localconnect},
jbe@111 1381 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1382 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1383 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1384 {"locallisten", moonbr_io_locallisten},
jbe@108 1385 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1386 {"poll", moonbr_io_poll},
jbe@115 1387 {"timeref", moonbr_io_timeref},
jbe@79 1388 {NULL, NULL}
jbe@79 1389 };
jbe@79 1390
jbe@79 1391 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1392
jbe@113 1393 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1394
jbe@80 1395 lua_newtable(L); // module
jbe@80 1396
jbe@146 1397 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@146 1398 lua_setfield(L, -2, "block");
jbe@146 1399
jbe@79 1400 lua_newtable(L); // public metatable
jbe@79 1401 lua_newtable(L); // handle methods
jbe@79 1402 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1403 lua_pushvalue(L, -1);
jbe@146 1404 lua_setfield(L, -4, "handle_pt");
jbe@79 1405 lua_setfield(L, -2, "__index");
jbe@79 1406 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1407
jbe@79 1408 lua_newtable(L); // handle metatable
jbe@79 1409 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 1410 lua_pushvalue(L, -1);
jbe@146 1411 lua_setfield(L, -3, "handle_mt");
jbe@79 1412 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1413
jbe@108 1414 lua_newtable(L); // listener metatable
jbe@108 1415 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1416 lua_newtable(L); // listener methods
jbe@108 1417 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1418 lua_pushvalue(L, -1);
jbe@146 1419 lua_setfield(L, -4, "listener_pt");
jbe@108 1420 lua_setfield(L, -2, "__index");
jbe@146 1421 lua_pushvalue(L, -1);
jbe@146 1422 lua_setfield(L, -3, "listener_mt");
jbe@108 1423 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1424
jbe@79 1425 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1426 return 1;
jbe@79 1427
jbe@79 1428 }
jbe@79 1429

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