moonbridge

annotate moonbridge_io.c @ 193:d338068fad0d

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Bugfix in moonbridge_io.c regarding reading without terminator char
author jbe
date Fri Jun 19 20:20:48 2015 +0200 (2015-06-19)
parents 08cf8e1865e9
children 5601a486e68a
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@193 171 char terminator;
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@193 209 if (terminatorlen) {
jbe@193 210 terminatorpos = memchr(
jbe@193 211 handle->readbuf + handle->readbufout,
jbe@193 212 terminator,
jbe@193 213 remaining
jbe@193 214 );
jbe@193 215 }
jbe@85 216 } else if (terminatorlen) {
jbe@105 217 terminatorpos = memchr(
jbe@105 218 handle->readbuf + handle->readbufout,
jbe@105 219 terminator,
jbe@105 220 handle->readbufin - handle->readbufout
jbe@105 221 );
jbe@85 222 }
jbe@142 223 if (terminatorpos) remaining = 1 + (
jbe@142 224 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 225 );
jbe@105 226 if (remaining >= 0) {
jbe@86 227 if (!drain) {
jbe@105 228 luaL_addlstring(
jbe@105 229 &luabuf,
jbe@105 230 handle->readbuf + handle->readbufout,
jbe@105 231 remaining
jbe@105 232 );
jbe@86 233 luaL_pushresult(&luabuf);
jbe@90 234 } else {
jbe@105 235 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 236 }
jbe@143 237 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 238 else lua_pushliteral(L, "maxlen");
jbe@105 239 handle->readbufout += remaining;
jbe@105 240 if (handle->readbufout == handle->readbufin) {
jbe@105 241 handle->readbufin = 0;
jbe@143 242 handle->readbufout = 0;
jbe@105 243 }
jbe@104 244 handle->readerr = 0;
jbe@143 245 return 2;
jbe@85 246 }
jbe@105 247 if (!drain) luaL_addlstring(
jbe@105 248 &luabuf,
jbe@105 249 handle->readbuf + handle->readbufout,
jbe@105 250 handle->readbufin - handle->readbufout
jbe@105 251 );
jbe@105 252 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 253 handle->readbufout = 0;
jbe@85 254 do {
jbe@103 255 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 256 } while (bytesread < 0 && (errno == EINTR));
jbe@105 257 if (
jbe@105 258 bytesread == 0 || (
jbe@105 259 nonblocking &&
jbe@105 260 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 261 )
jbe@105 262 ) {
jbe@105 263 handle->readbufin = 0;
jbe@143 264 if (!drain) luaL_pushresult(&luabuf);
jbe@143 265 else lua_pushinteger(L, luabufcnt);
jbe@143 266 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 267 else lua_pushliteral(L, "block");
jbe@105 268 handle->readerr = 0;
jbe@143 269 return 2;
jbe@105 270 }
jbe@103 271 if (bytesread < 0) {
jbe@85 272 moonbr_io_errmsg();
jbe@85 273 lua_pushnil(L);
jbe@85 274 lua_pushstring(L, errmsg);
jbe@85 275 return 2;
jbe@85 276 }
jbe@105 277 handle->readbufin = bytesread;
jbe@86 278 }
jbe@85 279 }
jbe@85 280
jbe@85 281 static int moonbr_io_read(lua_State *L) {
jbe@86 282 return moonbr_io_read_impl(L, 0, 0);
jbe@85 283 }
jbe@85 284
jbe@85 285 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 286 return moonbr_io_read_impl(L, 1, 0);
jbe@86 287 }
jbe@86 288
jbe@86 289 static int moonbr_io_drain(lua_State *L) {
jbe@86 290 return moonbr_io_read_impl(L, 0, 1);
jbe@86 291 }
jbe@86 292
jbe@86 293 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 294 return moonbr_io_read_impl(L, 1, 1);
jbe@85 295 }
jbe@85 296
jbe@140 297 #if LUA_VERSION_NUM >= 503
jbe@140 298 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 299 #else
jbe@140 300 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 301 #endif
jbe@143 302 lua_Integer remaining;
jbe@143 303 size_t len;
jbe@140 304 #if !(LUA_VERSION_NUM >= 503)
jbe@140 305 int ctx = 0;
jbe@140 306 lua_getctx(L, &ctx);
jbe@140 307 #endif
jbe@140 308 remaining = lua_tointeger(L, 3);
jbe@140 309 while (1) {
jbe@140 310 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 311 lua_pushvalue(L, 1);
jbe@140 312 lua_pushvalue(L, 3);
jbe@140 313 lua_pushvalue(L, 4);
jbe@140 314 lua_call(L, 3, 2);
jbe@143 315 if (lua_isnil(L, -2)) return 2;
jbe@143 316 lua_insert(L, -2);
jbe@143 317 len = lua_rawlen(L, -1);
jbe@143 318 if (ctx == 0) {
jbe@143 319 lua_replace(L, 5);
jbe@143 320 ctx = 1;
jbe@143 321 } else if (ctx == 1) {
jbe@143 322 lua_pushvalue(L, 5);
jbe@143 323 lua_newtable(L);
jbe@143 324 lua_replace(L, 5);
jbe@143 325 lua_rawseti(L, 5, 2);
jbe@143 326 lua_rawseti(L, 5, 1);
jbe@143 327 ctx = 2;
jbe@140 328 } else {
jbe@143 329 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 330 }
jbe@144 331 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 332 lua_pop(L, 1);
jbe@144 333 if (remaining >= 0 && len) {
jbe@143 334 remaining -= len;
jbe@143 335 lua_pushinteger(L, remaining);
jbe@143 336 lua_replace(L, 3);
jbe@143 337 }
jbe@140 338 lua_pushvalue(L, 2);
jbe@152 339 lua_callk(L, 0, 0, ctx, moonbr_io_read_cont);
jbe@140 340 }
jbe@140 341 if (ctx == 1) {
jbe@140 342 lua_pushvalue(L, 5);
jbe@140 343 } else {
jbe@140 344 luaL_Buffer buf;
jbe@140 345 lua_Integer i, chunkcount;
jbe@140 346 chunkcount = lua_rawlen(L, 5);
jbe@140 347 luaL_buffinit(L, &buf);
jbe@140 348 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 349 lua_rawgeti(L, 5, i);
jbe@140 350 luaL_addvalue(&buf);
jbe@140 351 }
jbe@140 352 luaL_pushresult(&buf);
jbe@140 353 }
jbe@143 354 lua_pushvalue(L, -2);
jbe@143 355 return 2;
jbe@140 356 }
jbe@140 357
jbe@140 358 static int moonbr_io_read_call(lua_State *L) {
jbe@140 359 lua_settop(L, 4);
jbe@140 360 lua_pushnil(L);
jbe@140 361 #if LUA_VERSION_NUM >= 503
jbe@140 362 return moonbr_io_read_cont(L, 0, 0);
jbe@140 363 #else
jbe@140 364 return moonbr_io_read_cont(L);
jbe@140 365 #endif
jbe@140 366 }
jbe@140 367
jbe@145 368 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 369
jbe@144 370 #if LUA_VERSION_NUM >= 503
jbe@144 371 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 372 #else
jbe@144 373 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 374 #endif
jbe@144 375 lua_Integer remaining, len;
jbe@144 376 size_t totallen = 0;
jbe@144 377 #if !(LUA_VERSION_NUM >= 503)
jbe@144 378 int ctx = 0;
jbe@144 379 lua_getctx(L, &ctx);
jbe@144 380 #endif
jbe@144 381 remaining = lua_tointeger(L, 3);
jbe@144 382 while (1) {
jbe@144 383 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 384 lua_pushvalue(L, 1);
jbe@144 385 lua_pushvalue(L, 3);
jbe@144 386 lua_pushvalue(L, 4);
jbe@144 387 lua_call(L, 3, 2);
jbe@144 388 if (lua_isnil(L, -2)) return 2;
jbe@144 389 lua_insert(L, -2);
jbe@144 390 len = lua_tointeger(L, -1);
jbe@144 391 lua_pop(L, 1);
jbe@144 392 totallen += len;
jbe@144 393 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 394 lua_pop(L, 1);
jbe@144 395 if (remaining >= 0 && len) {
jbe@144 396 remaining -= len;
jbe@144 397 lua_pushinteger(L, remaining);
jbe@144 398 lua_replace(L, 3);
jbe@144 399 }
jbe@144 400 lua_pushvalue(L, 2);
jbe@152 401 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 402 }
jbe@144 403 lua_pushinteger(L, totallen);
jbe@144 404 lua_pushvalue(L, -2);
jbe@144 405 return 2;
jbe@144 406 }
jbe@144 407
jbe@144 408 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 409 #if LUA_VERSION_NUM >= 503
jbe@144 410 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 411 #else
jbe@144 412 return moonbr_io_drain_cont(L);
jbe@144 413 #endif
jbe@144 414 }
jbe@144 415
jbe@145 416 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 417
jbe@81 418 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 419 moonbr_io_handle_t *handle;
jbe@80 420 int i, top;
jbe@80 421 const char *str;
jbe@92 422 size_t strlen;
jbe@103 423 ssize_t written;
jbe@80 424 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 425 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 426 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 427 if (handle->writeerr) {
jbe@80 428 lua_pushnil(L);
jbe@80 429 lua_pushliteral(L, "Previous write error");
jbe@80 430 return 2;
jbe@80 431 }
jbe@103 432 handle->writeerr = 1;
jbe@81 433 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 434 top = lua_gettop(L);
jbe@81 435 lua_getuservalue(L, 1);
jbe@103 436 lua_getfield(L, -1, "writequeue");
jbe@84 437 for (i=2; i<=top; i++) {
jbe@84 438 luaL_checklstring(L, i, &strlen);
jbe@84 439 lua_pushvalue(L, i);
jbe@84 440 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 441 handle->writeleft += strlen;
jbe@81 442 }
jbe@132 443 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 444 while (handle->writeqout != handle->writeqin) {
jbe@83 445 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 446 str = lua_tolstring(L, -1, &strlen);
jbe@92 447 while (handle->writeqoff < strlen) {
jbe@103 448 if (
jbe@132 449 strlen - handle->writeqoff <
jbe@103 450 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 451 ) {
jbe@103 452 memcpy(
jbe@103 453 handle->writebuf + handle->writebufin,
jbe@103 454 str + handle->writeqoff,
jbe@103 455 strlen - handle->writeqoff
jbe@103 456 );
jbe@103 457 handle->writebufin += strlen - handle->writeqoff;
jbe@80 458 break;
jbe@80 459 } else {
jbe@103 460 memcpy(
jbe@103 461 handle->writebuf + handle->writebufin,
jbe@103 462 str + handle->writeqoff,
jbe@103 463 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 464 );
jbe@103 465 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 466 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 467 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 468 written = write(
jbe@103 469 handle->fd,
jbe@103 470 handle->writebuf + handle->writebufout,
jbe@103 471 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 472 );
jbe@103 473 if (written < 0) {
jbe@81 474 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 475 goto moonbr_io_write_impl_block;
jbe@81 476 } else if (errno != EINTR) {
jbe@80 477 moonbr_io_errmsg();
jbe@80 478 lua_pushnil(L);
jbe@80 479 lua_pushstring(L, errmsg);
jbe@80 480 return 2;
jbe@80 481 }
jbe@103 482 } else {
jbe@103 483 handle->writebufout += written;
jbe@103 484 handle->writeleft -= written;
jbe@133 485 if (handle->flushedleft) {
jbe@133 486 if (written >= handle->flushedleft) {
jbe@133 487 handle->flushedleft = 0;
jbe@133 488 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 489 } else {
jbe@133 490 handle->flushedleft -= written;
jbe@133 491 }
jbe@133 492 }
jbe@80 493 }
jbe@80 494 }
jbe@103 495 handle->writebufin = 0;
jbe@103 496 handle->writebufout = 0;
jbe@80 497 }
jbe@80 498 }
jbe@81 499 handle->writeqoff = 0;
jbe@81 500 lua_pop(L, 1);
jbe@81 501 lua_pushnil(L);
jbe@83 502 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 503 }
jbe@132 504 while (handle->flushedleft) {
jbe@133 505 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 506 written = write(
jbe@132 507 handle->fd,
jbe@132 508 handle->writebuf + handle->writebufout,
jbe@132 509 handle->writebufin - handle->writebufout
jbe@132 510 );
jbe@132 511 if (written < 0) {
jbe@132 512 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 513 goto moonbr_io_write_impl_block;
jbe@132 514 } else if (errno != EINTR) {
jbe@132 515 moonbr_io_errmsg();
jbe@132 516 lua_pushnil(L);
jbe@132 517 lua_pushstring(L, errmsg);
jbe@132 518 return 2;
jbe@81 519 }
jbe@132 520 } else {
jbe@132 521 handle->writebufout += written;
jbe@132 522 handle->writeleft -= written;
jbe@133 523 if (handle->flushedleft) {
jbe@133 524 if (written >= handle->flushedleft) {
jbe@133 525 handle->flushedleft = 0;
jbe@133 526 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 527 } else {
jbe@133 528 handle->flushedleft -= written;
jbe@133 529 }
jbe@133 530 }
jbe@81 531 }
jbe@132 532 }
jbe@132 533 if (handle->writebufout == handle->writebufin) {
jbe@103 534 handle->writebufin = 0;
jbe@103 535 handle->writebufout = 0;
jbe@81 536 }
jbe@103 537 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 538 else lua_pushvalue(L, 1);
jbe@103 539 handle->writeerr = 0;
jbe@80 540 return 1;
jbe@81 541 moonbr_io_write_impl_block:
jbe@91 542 lua_pushinteger(L, handle->writeleft);
jbe@103 543 handle->writeerr = 0;
jbe@81 544 return 1;
jbe@81 545 }
jbe@81 546
jbe@81 547 static int moonbr_io_write(lua_State *L) {
jbe@81 548 return moonbr_io_write_impl(L, 0, 0);
jbe@81 549 }
jbe@81 550
jbe@81 551 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 552 return moonbr_io_write_impl(L, 1, 0);
jbe@80 553 }
jbe@80 554
jbe@80 555 static int moonbr_io_flush(lua_State *L) {
jbe@81 556 return moonbr_io_write_impl(L, 0, 1);
jbe@81 557 }
jbe@81 558
jbe@81 559 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 560 return moonbr_io_write_impl(L, 1, 1);
jbe@80 561 }
jbe@80 562
jbe@145 563 #if LUA_VERSION_NUM >= 503
jbe@145 564 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 565 #else
jbe@145 566 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 567 #endif
jbe@145 568 while (1) {
jbe@145 569 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 570 lua_pushvalue(L, 1);
jbe@145 571 lua_call(L, 1, 2);
jbe@145 572 if (lua_isnil(L, -2)) return 2;
jbe@145 573 if (!lua_tointeger(L, -2)) {
jbe@145 574 lua_pushvalue(L, 1);
jbe@145 575 return 1;
jbe@145 576 }
jbe@145 577 lua_pop(L, 2);
jbe@145 578 lua_pushvalue(L, 2);
jbe@152 579 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 580 }
jbe@145 581 }
jbe@145 582
jbe@145 583 static int moonbr_io_write_call(lua_State *L) {
jbe@145 584 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 585 lua_insert(L, 3);
jbe@145 586 lua_pushvalue(L, 1);
jbe@145 587 lua_insert(L, 4);
jbe@145 588 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 589 if (lua_isnil(L, -2)) return 2;
jbe@145 590 if (!lua_tointeger(L, -2)) {
jbe@145 591 lua_pushvalue(L, 1);
jbe@145 592 return 1;
jbe@145 593 }
jbe@145 594 #if LUA_VERSION_NUM >= 503
jbe@145 595 return moonbr_io_write_cont(L, 0, 0);
jbe@145 596 #else
jbe@145 597 return moonbr_io_write_cont(L);
jbe@145 598 #endif
jbe@145 599 }
jbe@145 600
jbe@145 601 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 602
jbe@145 603 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 604 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 605 lua_insert(L, 3);
jbe@145 606 lua_pushvalue(L, 1);
jbe@145 607 lua_insert(L, 4);
jbe@145 608 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 609 if (lua_isnil(L, -2)) return 2;
jbe@145 610 if (!lua_tointeger(L, -2)) {
jbe@145 611 lua_pushvalue(L, 1);
jbe@145 612 return 1;
jbe@145 613 }
jbe@145 614 #if LUA_VERSION_NUM >= 503
jbe@145 615 return moonbr_io_write_cont(L, 0, 0);
jbe@145 616 #else
jbe@145 617 return moonbr_io_write_cont(L);
jbe@145 618 #endif
jbe@145 619 }
jbe@145 620
jbe@145 621 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 622
jbe@88 623 static int moonbr_io_finish(lua_State *L) {
jbe@88 624 moonbr_io_handle_t *handle;
jbe@88 625 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 626 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 627 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 628 if (handle->writeleft) {
jbe@94 629 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 630 lua_pushvalue(L, 1);
jbe@116 631 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 632 handle->finished = 1;
jbe@116 633 lua_error(L);
jbe@116 634 }
jbe@94 635 if (!lua_toboolean(L, -2)) {
jbe@94 636 handle->finished = 1;
jbe@94 637 return 2;
jbe@88 638 }
jbe@94 639 }
jbe@94 640 handle->finished = 1;
jbe@107 641 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 642 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 643 moonbr_io_errmsg();
jbe@88 644 lua_pushnil(L);
jbe@88 645 lua_pushstring(L, errmsg);
jbe@88 646 return 2;
jbe@88 647 }
jbe@94 648 } else {
jbe@94 649 if (close(handle->fd)) {
jbe@94 650 moonbr_io_errmsg();
jbe@94 651 handle->fd = -1;
jbe@94 652 lua_pushnil(L);
jbe@94 653 lua_pushstring(L, errmsg);
jbe@94 654 return 2;
jbe@94 655 }
jbe@94 656 handle->fd = -1; /* fake EOF on read */
jbe@88 657 }
jbe@88 658 lua_pushboolean(L, 1);
jbe@88 659 return 1;
jbe@88 660 }
jbe@88 661
jbe@94 662 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 663 moonbr_io_handle_t *handle;
jbe@83 664 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 665 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 666 if (!reset) {
jbe@87 667 if (handle->writeleft) {
jbe@87 668 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 669 lua_pushvalue(L, 1);
jbe@116 670 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 671 handle->closed = 1;
jbe@116 672 close(handle->fd);
jbe@116 673 handle->fd = -1;
jbe@116 674 lua_error(L);
jbe@116 675 }
jbe@129 676 handle->closed = 1;
jbe@87 677 if (!lua_toboolean(L, -2)) {
jbe@87 678 close(handle->fd);
jbe@87 679 handle->fd = -1;
jbe@87 680 return 2;
jbe@87 681 }
jbe@129 682 } else {
jbe@129 683 handle->closed = 1;
jbe@129 684 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 685 }
jbe@129 686 } else {
jbe@129 687 handle->closed = 1;
jbe@83 688 }
jbe@94 689 if (handle->fd >= 0) {
jbe@94 690 if (close(handle->fd)) {
jbe@94 691 moonbr_io_errmsg();
jbe@94 692 handle->fd = -1;
jbe@94 693 lua_pushnil(L);
jbe@94 694 lua_pushstring(L, errmsg);
jbe@94 695 return 2;
jbe@94 696 }
jbe@104 697 handle->fd = -1;
jbe@83 698 }
jbe@83 699 lua_pushboolean(L, 1);
jbe@83 700 return 1;
jbe@84 701
jbe@83 702 }
jbe@83 703
jbe@94 704 static int moonbr_io_close(lua_State *L) {
jbe@94 705 return moonbr_io_close_impl(L, 0);
jbe@94 706 }
jbe@94 707
jbe@84 708 static int moonbr_io_reset(lua_State *L) {
jbe@94 709 return moonbr_io_close_impl(L, 1);
jbe@84 710 }
jbe@84 711
jbe@108 712 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 713 moonbr_io_handle_t *handle;
jbe@88 714 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 715 if (handle->fd >= 0) {
jbe@88 716 lua_pushcfunction(L, moonbr_io_close);
jbe@88 717 lua_pushvalue(L, 1);
jbe@88 718 lua_pushinteger(L, 0);
jbe@88 719 lua_call(L, 2, 0);
jbe@88 720 }
jbe@88 721 return 0;
jbe@88 722 }
jbe@88 723
jbe@100 724 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 725 moonbr_io_handle_t *handle;
jbe@88 726 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 727 if (!handle->closed) {
jbe@100 728 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 729 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 730 lua_call(L, 1, 0);
jbe@88 731 }
jbe@88 732 }
jbe@88 733
jbe@107 734 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 735 moonbr_io_handle_t *handle;
jbe@107 736 struct sockaddr addr;
jbe@107 737 socklen_t addrlen;
jbe@79 738 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 739 handle->fd = fd;
jbe@107 740 addrlen = sizeof(addr);
jbe@107 741 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 742 if (errno != ENOTSOCK) {
jbe@107 743 moonbr_io_errmsg();
jbe@107 744 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 745 }
jbe@107 746 handle->issock = 0;
jbe@107 747 } else {
jbe@107 748 handle->issock = 1;
jbe@107 749 handle->addrfam = addr.sa_family;
jbe@107 750 }
jbe@94 751 handle->finished = 0;
jbe@94 752 handle->closed = 0;
jbe@81 753 handle->nonblocking = -1;
jbe@95 754 handle->nopush = -1;
jbe@85 755 handle->readerr = 0;
jbe@105 756 handle->readbufin = 0;
jbe@105 757 handle->readbufout = 0;
jbe@81 758 handle->writeerr = 0;
jbe@81 759 handle->writeleft = 0;
jbe@132 760 handle->flushedleft = 0;
jbe@83 761 handle->writeqin = 0;
jbe@83 762 handle->writeqout = 0;
jbe@81 763 handle->writeqoff = 0;
jbe@103 764 handle->writebufin = 0;
jbe@103 765 handle->writebufout = 0;
jbe@87 766 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 767 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 768 lua_setmetatable(L, -2);
jbe@79 769 lua_newtable(L); // uservalue
jbe@81 770 lua_newtable(L);
jbe@103 771 lua_setfield(L, -2, "writequeue");
jbe@79 772 lua_newtable(L); // public
jbe@107 773 if (handle->addrfam == AF_INET6) {
jbe@107 774 struct sockaddr_in6 addr_in6;
jbe@107 775 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 776 const char *addrstr;
jbe@107 777 addrlen = sizeof(addr_in6);
jbe@107 778 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 779 moonbr_io_errmsg();
jbe@107 780 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 781 }
jbe@107 782 if (addrlen > sizeof(addr_in6)) {
jbe@107 783 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 784 }
jbe@107 785 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 786 if (!addrstr) {
jbe@107 787 moonbr_io_errmsg();
jbe@107 788 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 789 } else {
jbe@107 790 lua_pushstring(L, addrstr);
jbe@107 791 lua_setfield(L, -2, "local_ip6");
jbe@107 792 }
jbe@107 793 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 794 lua_setfield(L, -2, "local_tcpport");
jbe@107 795 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 796 moonbr_io_errmsg();
jbe@107 797 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 798 }
jbe@107 799 if (addrlen > sizeof(addr_in6)) {
jbe@107 800 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 801 }
jbe@107 802 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 803 if (!addrstr) {
jbe@107 804 moonbr_io_errmsg();
jbe@107 805 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 806 } else {
jbe@107 807 lua_pushstring(L, addrstr);
jbe@107 808 lua_setfield(L, -2, "remote_ip6");
jbe@107 809 }
jbe@107 810 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 811 lua_setfield(L, -2, "remote_tcpport");
jbe@107 812 } else if (handle->addrfam == AF_INET) {
jbe@107 813 struct sockaddr_in addr_in;
jbe@107 814 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 815 const char *addrstr;
jbe@107 816 addrlen = sizeof(addr_in);
jbe@107 817 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 818 moonbr_io_errmsg();
jbe@107 819 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 820 }
jbe@107 821 if (addrlen > sizeof(addr_in)) {
jbe@107 822 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 823 }
jbe@107 824 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 825 if (!addrstr) {
jbe@107 826 moonbr_io_errmsg();
jbe@107 827 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 828 } else {
jbe@107 829 lua_pushstring(L, addrstr);
jbe@107 830 lua_setfield(L, -2, "local_ip4");
jbe@107 831 }
jbe@107 832 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 833 lua_setfield(L, -2, "local_tcpport");
jbe@107 834 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 835 moonbr_io_errmsg();
jbe@107 836 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 837 }
jbe@107 838 if (addrlen > sizeof(addr_in)) {
jbe@107 839 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 840 }
jbe@107 841 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 842 if (!addrstr) {
jbe@107 843 moonbr_io_errmsg();
jbe@107 844 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 845 } else {
jbe@107 846 lua_pushstring(L, addrstr);
jbe@107 847 lua_setfield(L, -2, "remote_ip4");
jbe@107 848 }
jbe@107 849 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 850 lua_setfield(L, -2, "remote_tcpport");
jbe@107 851 }
jbe@79 852 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 853 lua_setmetatable(L, -2);
jbe@79 854 lua_setfield(L, -2, "public");
jbe@79 855 lua_setuservalue(L, -2);
jbe@79 856 }
jbe@79 857
jbe@79 858 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 859 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 860 lua_getuservalue(L, 1);
jbe@79 861 lua_getfield(L, -1, "public");
jbe@79 862 lua_pushvalue(L, 2);
jbe@79 863 lua_gettable(L, -2);
jbe@79 864 return 1;
jbe@79 865 }
jbe@79 866
jbe@79 867 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 868 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 869 lua_getuservalue(L, 1);
jbe@79 870 lua_getfield(L, -1, "public");
jbe@79 871 lua_pushvalue(L, 2);
jbe@79 872 lua_pushvalue(L, 3);
jbe@79 873 lua_settable(L, -3);
jbe@79 874 return 0;
jbe@79 875 }
jbe@79 876
jbe@111 877 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 878 const char *path;
jbe@111 879 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 880 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 881 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 882 ) - 1; /* one byte for termination */
jbe@111 883 int sock;
jbe@111 884 path = luaL_checkstring(L, 1);
jbe@111 885 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 886 strcpy(sockaddr.sun_path, path);
jbe@111 887 sock = socket(
jbe@111 888 PF_LOCAL,
jbe@111 889 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 890 0
jbe@111 891 );
jbe@111 892 if (sock < 0) {
jbe@111 893 moonbr_io_errmsg();
jbe@111 894 lua_pushnil(L);
jbe@111 895 lua_pushstring(L, errmsg);
jbe@111 896 return 2;
jbe@111 897 }
jbe@111 898 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 899 if (!nonblocking && errno == EINTR) {
jbe@111 900 moonbr_io_errmsg();
jbe@111 901 close(sock);
jbe@111 902 lua_pushnil(L);
jbe@111 903 lua_pushstring(L, errmsg);
jbe@111 904 return 2;
jbe@111 905 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 906 moonbr_io_errmsg();
jbe@111 907 lua_pushnil(L);
jbe@111 908 lua_pushstring(L, errmsg);
jbe@111 909 return 2;
jbe@111 910 }
jbe@111 911 }
jbe@111 912 moonbr_io_pushhandle(L, sock);
jbe@111 913 return 1;
jbe@111 914 }
jbe@111 915
jbe@111 916 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 917 return moonbr_io_localconnect_impl(L, 0);
jbe@111 918 }
jbe@111 919
jbe@111 920 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 921 return moonbr_io_localconnect_impl(L, 1);
jbe@111 922 }
jbe@111 923
jbe@99 924 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 925 const char *host, *port;
jbe@98 926 struct addrinfo hints = { 0, };
jbe@98 927 struct addrinfo *res, *addrinfo;
jbe@98 928 int errcode;
jbe@98 929 int sock;
jbe@98 930 host = luaL_checkstring(L, 1);
jbe@98 931 port = luaL_checkstring(L, 2);
jbe@98 932 hints.ai_family = AF_UNSPEC;
jbe@98 933 hints.ai_socktype = SOCK_STREAM;
jbe@98 934 hints.ai_protocol = IPPROTO_TCP;
jbe@98 935 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 936 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 937 if (errcode) {
jbe@102 938 freeaddrinfo(res);
jbe@98 939 if (errcode == EAI_SYSTEM) {
jbe@98 940 moonbr_io_errmsg();
jbe@98 941 lua_pushnil(L);
jbe@98 942 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 943 } else {
jbe@98 944 lua_pushnil(L);
jbe@98 945 lua_pushstring(L, gai_strerror(errcode));
jbe@98 946 }
jbe@98 947 return 2;
jbe@98 948 }
jbe@98 949 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 950 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 951 }
jbe@98 952 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 953 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 954 }
jbe@98 955 addrinfo = res;
jbe@98 956 moonbr_io_tcpconnect_found:
jbe@99 957 sock = socket(
jbe@134 958 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 959 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 960 addrinfo->ai_protocol
jbe@99 961 );
jbe@98 962 if (sock < 0) {
jbe@98 963 moonbr_io_errmsg();
jbe@108 964 freeaddrinfo(res);
jbe@98 965 lua_pushnil(L);
jbe@98 966 lua_pushstring(L, errmsg);
jbe@108 967 return 2;
jbe@98 968 }
jbe@98 969 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 970 freeaddrinfo(res);
jbe@99 971 if (!nonblocking && errno == EINTR) {
jbe@99 972 moonbr_io_errmsg();
jbe@99 973 close(sock);
jbe@99 974 lua_pushnil(L);
jbe@99 975 lua_pushstring(L, errmsg);
jbe@99 976 return 2;
jbe@99 977 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 978 moonbr_io_errmsg();
jbe@99 979 lua_pushnil(L);
jbe@99 980 lua_pushstring(L, errmsg);
jbe@99 981 return 2;
jbe@99 982 }
jbe@108 983 } else {
jbe@108 984 freeaddrinfo(res);
jbe@98 985 }
jbe@107 986 moonbr_io_pushhandle(L, sock);
jbe@98 987 return 1;
jbe@98 988 }
jbe@98 989
jbe@99 990 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 991 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 992 }
jbe@99 993
jbe@99 994 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 995 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 996 }
jbe@99 997
jbe@112 998 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 999 moonbr_io_listener_t *listener;
jbe@112 1000 const char *path;
jbe@118 1001 struct stat sb;
jbe@112 1002 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1003 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1004 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1005 ) - 1; /* one byte for termination */
jbe@112 1006 int sock;
jbe@112 1007 path = luaL_checkstring(L, 1);
jbe@112 1008 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1009 strcpy(sockaddr.sun_path, path);
jbe@118 1010 if (stat(path, &sb) == 0) {
jbe@118 1011 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1012 }
jbe@112 1013 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1014 listener->fd = -1;
jbe@112 1015 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1016 sock = socket(
jbe@112 1017 PF_LOCAL,
jbe@112 1018 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1019 0
jbe@112 1020 );
jbe@112 1021 if (sock < 0) {
jbe@112 1022 moonbr_io_errmsg();
jbe@112 1023 lua_pushnil(L);
jbe@112 1024 lua_pushstring(L, errmsg);
jbe@112 1025 return 2;
jbe@112 1026 }
jbe@112 1027 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1028 moonbr_io_errmsg();
jbe@112 1029 close(sock);
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 (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
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 listener->fd = sock;
jbe@118 1042 listener->addrfam = AF_LOCAL;
jbe@112 1043 listener->nonblocking = -1;
jbe@112 1044 return 1;
jbe@112 1045 }
jbe@112 1046
jbe@108 1047 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1048 moonbr_io_listener_t *listener;
jbe@108 1049 const char *host, *port;
jbe@108 1050 struct addrinfo hints = { 0, };
jbe@108 1051 struct addrinfo *res, *addrinfo;
jbe@108 1052 int errcode;
jbe@108 1053 int sock;
jbe@108 1054 host = luaL_optstring(L, 1, NULL);
jbe@108 1055 port = luaL_checkstring(L, 2);
jbe@108 1056 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1057 listener->fd = -1;
jbe@108 1058 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1059 hints.ai_family = AF_UNSPEC;
jbe@108 1060 hints.ai_socktype = SOCK_STREAM;
jbe@108 1061 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1062 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1063 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1064 if (errcode) {
jbe@108 1065 freeaddrinfo(res);
jbe@108 1066 if (errcode == EAI_SYSTEM) {
jbe@108 1067 moonbr_io_errmsg();
jbe@108 1068 lua_pushnil(L);
jbe@108 1069 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1070 } else {
jbe@108 1071 lua_pushnil(L);
jbe@108 1072 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1073 }
jbe@108 1074 return 2;
jbe@108 1075 }
jbe@108 1076 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1077 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1078 }
jbe@108 1079 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1080 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1081 }
jbe@108 1082 addrinfo = res;
jbe@108 1083 moonbr_io_tcpconnect_found:
jbe@118 1084 listener->addrfam = addrinfo->ai_family;
jbe@108 1085 sock = socket(
jbe@134 1086 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1087 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1088 addrinfo->ai_protocol
jbe@108 1089 );
jbe@108 1090 if (sock < 0) {
jbe@108 1091 moonbr_io_errmsg();
jbe@108 1092 freeaddrinfo(res);
jbe@108 1093 lua_pushnil(L);
jbe@108 1094 lua_pushstring(L, errmsg);
jbe@108 1095 return 2;
jbe@108 1096 }
jbe@120 1097 {
jbe@120 1098 static const int reuseval = 1;
jbe@120 1099 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1100 moonbr_io_errmsg();
jbe@120 1101 freeaddrinfo(res);
jbe@120 1102 close(sock);
jbe@120 1103 lua_pushnil(L);
jbe@120 1104 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1105 return 2;
jbe@120 1106 }
jbe@120 1107 }
jbe@108 1108 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1109 moonbr_io_errmsg();
jbe@108 1110 freeaddrinfo(res);
jbe@108 1111 close(sock);
jbe@108 1112 lua_pushnil(L);
jbe@108 1113 lua_pushstring(L, errmsg);
jbe@108 1114 return 2;
jbe@108 1115 }
jbe@108 1116 freeaddrinfo(res);
jbe@108 1117 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1118 moonbr_io_errmsg();
jbe@108 1119 close(sock);
jbe@108 1120 lua_pushnil(L);
jbe@108 1121 lua_pushstring(L, errmsg);
jbe@108 1122 return 2;
jbe@108 1123 }
jbe@108 1124 listener->fd = sock;
jbe@108 1125 listener->nonblocking = -1;
jbe@108 1126 return 1;
jbe@108 1127 }
jbe@108 1128
jbe@108 1129 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1130 moonbr_io_listener_t *listener;
jbe@108 1131 int fd;
jbe@108 1132 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1133 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1134 if (listener->nonblocking != nonblocking) {
jbe@108 1135 int flags;
jbe@108 1136 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1137 if (flags == -1) {
jbe@108 1138 moonbr_io_errmsg();
jbe@108 1139 close(listener->fd);
jbe@108 1140 listener->fd = -1;
jbe@108 1141 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1142 }
jbe@108 1143 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1144 else flags &= ~O_NONBLOCK;
jbe@108 1145 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1146 moonbr_io_errmsg();
jbe@108 1147 close(listener->fd);
jbe@108 1148 listener->fd = -1;
jbe@108 1149 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1150 }
jbe@108 1151 listener->nonblocking = nonblocking;
jbe@108 1152 }
jbe@108 1153 while (1) {
jbe@108 1154 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1155 if (fd < 0) {
jbe@108 1156 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1157 lua_pushboolean(L, 0);
jbe@108 1158 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1159 return 2;
jbe@108 1160 } else if (errno != EINTR) {
jbe@108 1161 moonbr_io_errmsg();
jbe@108 1162 lua_pushnil(L);
jbe@108 1163 lua_pushstring(L, errmsg);
jbe@108 1164 return 2;
jbe@108 1165 }
jbe@108 1166 } else {
jbe@108 1167 moonbr_io_pushhandle(L, fd);
jbe@108 1168 return 1;
jbe@108 1169 }
jbe@108 1170 }
jbe@108 1171 }
jbe@108 1172
jbe@108 1173 static int moonbr_io_accept(lua_State *L) {
jbe@108 1174 return moonbr_io_accept_impl(L, 0);
jbe@108 1175 }
jbe@108 1176
jbe@108 1177 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1178 return moonbr_io_accept_impl(L, 1);
jbe@108 1179 }
jbe@108 1180
jbe@108 1181 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1182 moonbr_io_listener_t *listener;
jbe@118 1183 struct sockaddr_un addr;
jbe@118 1184 socklen_t addrlen;
jbe@118 1185 struct stat sb;
jbe@108 1186 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1187 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1188 addrlen = sizeof(addr);
jbe@118 1189 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1190 if (close(listener->fd)) {
jbe@108 1191 moonbr_io_errmsg();
jbe@108 1192 listener->fd = -1;
jbe@118 1193 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1194 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1195 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1196 }
jbe@118 1197 }
jbe@108 1198 lua_pushnil(L);
jbe@108 1199 lua_pushstring(L, errmsg);
jbe@108 1200 return 2;
jbe@108 1201 }
jbe@108 1202 listener->fd = -1;
jbe@118 1203 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1204 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1205 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1206 }
jbe@118 1207 }
jbe@108 1208 lua_pushboolean(L, 1);
jbe@108 1209 return 1;
jbe@108 1210 }
jbe@108 1211
jbe@108 1212 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1213 moonbr_io_listener_t *listener;
jbe@108 1214 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1215 if (listener->fd >= 0) close(listener->fd);
jbe@108 1216 listener->fd = -1;
jbe@108 1217 return 0;
jbe@108 1218 }
jbe@108 1219
jbe@106 1220 static int moonbr_io_poll(lua_State *L) {
jbe@106 1221 moonbr_io_handle_t *handle;
jbe@108 1222 moonbr_io_listener_t *listener;
jbe@106 1223 int fd, isnum;
jbe@106 1224 int nfds = 0;
jbe@106 1225 fd_set readfds, writefds, exceptfds;
jbe@106 1226 struct timeval timeout = {0, };
jbe@106 1227 int status;
jbe@106 1228 FD_ZERO(&readfds);
jbe@106 1229 FD_ZERO(&writefds);
jbe@106 1230 FD_ZERO(&exceptfds);
jbe@106 1231 if (!lua_isnoneornil(L, 1)) {
jbe@106 1232 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1233 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1234 if (lua_toboolean(L, -1)) {
jbe@106 1235 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1236 if (handle) {
jbe@109 1237 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1238 fd = handle->fd;
jbe@122 1239 if (
jbe@122 1240 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1241 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1242 ) {
jbe@109 1243 lua_pushboolean(L, 1);
jbe@109 1244 return 1;
jbe@109 1245 }
jbe@106 1246 } else {
jbe@108 1247 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1248 if (listener) {
jbe@108 1249 fd = listener->fd;
jbe@108 1250 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1251 } else {
jbe@108 1252 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1253 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1254 }
jbe@106 1255 }
jbe@138 1256 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1257 FD_SET(fd, &readfds);
jbe@106 1258 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1259 }
jbe@106 1260 }
jbe@106 1261 }
jbe@106 1262 if (!lua_isnoneornil(L, 2)) {
jbe@106 1263 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1264 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1265 if (lua_toboolean(L, -1)) {
jbe@106 1266 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1267 if (handle) {
jbe@109 1268 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1269 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1270 fd = handle->fd;
jbe@106 1271 } else {
jbe@108 1272 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1273 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1274 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1275 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1276 }
jbe@138 1277 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1278 FD_SET(fd, &writefds);
jbe@106 1279 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1280 }
jbe@106 1281 }
jbe@106 1282 }
jbe@106 1283 if (!lua_isnoneornil(L, 3)) {
jbe@106 1284 lua_Number n;
jbe@106 1285 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1286 if (isnum && n<0) {
jbe@146 1287 lua_pushboolean(L, 0);
jbe@146 1288 lua_pushliteral(L, "Negative timeout");
jbe@146 1289 return 2;
jbe@146 1290 } else if (isnum && n>=0 && n<100000000) {
jbe@106 1291 timeout.tv_sec = n;
jbe@106 1292 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1293 } else {
jbe@106 1294 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1295 }
jbe@106 1296 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1297 } else {
jbe@106 1298 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1299 }
jbe@106 1300 if (status == -1) {
jbe@106 1301 if (errno == EINTR) {
jbe@146 1302 lua_pushnil(L);
jbe@106 1303 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1304 return 2;
jbe@106 1305 } else {
jbe@106 1306 moonbr_io_errmsg();
jbe@106 1307 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1308 }
jbe@106 1309 } else if (status == 0) {
jbe@106 1310 lua_pushboolean(L, 0);
jbe@106 1311 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1312 return 2;
jbe@106 1313 } else {
jbe@106 1314 lua_pushboolean(L, 1);
jbe@106 1315 return 1;
jbe@106 1316 }
jbe@106 1317 }
jbe@106 1318
jbe@115 1319 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1320 lua_Number sub;
jbe@115 1321 struct timespec tp;
jbe@115 1322 sub = luaL_optnumber(L, 1, 0);
jbe@115 1323 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1324 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1325 }
jbe@115 1326 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1327 return 1;
jbe@115 1328 }
jbe@115 1329
jbe@79 1330 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1331 {"read", moonbr_io_read},
jbe@85 1332 {"read_nb", moonbr_io_read_nb},
jbe@140 1333 {"read_call", moonbr_io_read_call},
jbe@140 1334 {"read_yield", moonbr_io_read_yield},
jbe@86 1335 {"drain", moonbr_io_drain},
jbe@86 1336 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1337 {"drain_call", moonbr_io_drain_call},
jbe@144 1338 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1339 {"write", moonbr_io_write},
jbe@81 1340 {"write_nb", moonbr_io_write_nb},
jbe@145 1341 {"write_call", moonbr_io_write_call},
jbe@145 1342 {"write_yield", moonbr_io_write_yield},
jbe@80 1343 {"flush", moonbr_io_flush},
jbe@81 1344 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1345 {"flush_call", moonbr_io_flush_call},
jbe@145 1346 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1347 {"finish", moonbr_io_finish},
jbe@87 1348 {"close", moonbr_io_close},
jbe@85 1349 {"reset", moonbr_io_reset},
jbe@79 1350 {NULL, NULL}
jbe@79 1351 };
jbe@79 1352
jbe@79 1353 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1354 {"__index", moonbr_io_handleindex},
jbe@79 1355 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1356 {"__gc", moonbr_io_handlegc},
jbe@108 1357 {NULL, NULL}
jbe@108 1358 };
jbe@108 1359
jbe@108 1360 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1361 {"accept", moonbr_io_accept},
jbe@108 1362 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1363 {"close", moonbr_io_unlisten},
jbe@108 1364 {NULL, NULL}
jbe@108 1365 };
jbe@108 1366
jbe@108 1367 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1368 {"__gc", moonbr_io_listenergc},
jbe@79 1369 {NULL, NULL}
jbe@79 1370 };
jbe@79 1371
jbe@79 1372 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1373 {"localconnect", moonbr_io_localconnect},
jbe@111 1374 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1375 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1376 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1377 {"locallisten", moonbr_io_locallisten},
jbe@108 1378 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1379 {"poll", moonbr_io_poll},
jbe@115 1380 {"timeref", moonbr_io_timeref},
jbe@79 1381 {NULL, NULL}
jbe@79 1382 };
jbe@79 1383
jbe@79 1384 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1385
jbe@113 1386 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1387
jbe@80 1388 lua_newtable(L); // module
jbe@80 1389
jbe@79 1390 lua_newtable(L); // public metatable
jbe@79 1391 lua_newtable(L); // handle methods
jbe@79 1392 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1393 lua_pushvalue(L, -1);
jbe@146 1394 lua_setfield(L, -4, "handle_pt");
jbe@79 1395 lua_setfield(L, -2, "__index");
jbe@79 1396 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1397
jbe@79 1398 lua_newtable(L); // handle metatable
jbe@79 1399 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 1400 lua_pushvalue(L, -1);
jbe@146 1401 lua_setfield(L, -3, "handle_mt");
jbe@79 1402 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1403
jbe@108 1404 lua_newtable(L); // listener metatable
jbe@108 1405 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1406 lua_newtable(L); // listener methods
jbe@108 1407 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1408 lua_pushvalue(L, -1);
jbe@146 1409 lua_setfield(L, -4, "listener_pt");
jbe@108 1410 lua_setfield(L, -2, "__index");
jbe@146 1411 lua_pushvalue(L, -1);
jbe@146 1412 lua_setfield(L, -3, "listener_mt");
jbe@108 1413 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1414
jbe@79 1415 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1416 return 1;
jbe@79 1417
jbe@79 1418 }
jbe@79 1419

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