moonbridge

annotate moonbridge_io.c @ 147:43387f11b096

find changesets by author, revision, files, or words in the commit message
Do not pass moonbridge_io.block when invoking callback passed to _call I/O methods but only include it for _yield I/O methods
author jbe
date Thu May 07 22:16:15 2015 +0200 (2015-05-07)
parents 6dfe5b424b18
children c51c38d991df
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@147 76 static int moonbr_io_yield_block(lua_State *L) {
jbe@147 77 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@147 78 lua_insert(L, 1);
jbe@147 79 return lua_yield(L, lua_gettop(L));
jbe@140 80 }
jbe@140 81
jbe@140 82 #if LUA_VERSION_NUM >= 503
jbe@140 83 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 84 #else
jbe@140 85 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 86 #endif
jbe@140 87 return lua_gettop(L);
jbe@140 88 }
jbe@140 89
jbe@145 90 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 91 static int yieldfunc(lua_State *L) { \
jbe@145 92 int args; \
jbe@145 93 lua_pushcfunction(L, callfunc); \
jbe@145 94 lua_insert(L, 1); \
jbe@145 95 args = lua_gettop(L); \
jbe@147 96 lua_pushcfunction(L, moonbr_io_yield_block); \
jbe@145 97 lua_insert(L, 3); \
jbe@145 98 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 99 return lua_gettop(L); \
jbe@145 100 }
jbe@145 101
jbe@81 102 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 103 int flags;
jbe@95 104 if (handle->nonblocking == nonblocking) return;
jbe@95 105 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 106 if (flags == -1) {
jbe@95 107 moonbr_io_errmsg();
jbe@96 108 close(handle->fd);
jbe@96 109 handle->fd = -1;
jbe@96 110 handle->closed = 1;
jbe@95 111 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 112 }
jbe@95 113 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 114 else flags &= ~O_NONBLOCK;
jbe@95 115 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 116 moonbr_io_errmsg();
jbe@96 117 close(handle->fd);
jbe@96 118 handle->fd = -1;
jbe@96 119 handle->closed = 1;
jbe@95 120 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 121 }
jbe@95 122 handle->nonblocking = nonblocking;
jbe@81 123 }
jbe@81 124
jbe@87 125 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 126 struct linger lingerval = { 0, };
jbe@107 127 if (!handle->issock) return;
jbe@87 128 if (timeout >= 0) {
jbe@87 129 lingerval.l_onoff = 1;
jbe@87 130 lingerval.l_linger = timeout;
jbe@87 131 }
jbe@87 132 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 133 moonbr_io_errmsg();
jbe@96 134 close(handle->fd);
jbe@96 135 handle->fd = -1;
jbe@96 136 handle->closed = 1;
jbe@95 137 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 138 }
jbe@87 139 }
jbe@87 140
jbe@133 141 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 142 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 143 if (
jbe@107 144 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 145 handle->nopush == nopush
jbe@107 146 ) return;
jbe@96 147 #if defined(TCP_NOPUSH)
jbe@96 148 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 149 #elif defined(TCP_CORK)
jbe@104 150 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 151 #endif
jbe@96 152 moonbr_io_errmsg();
jbe@96 153 close(handle->fd);
jbe@96 154 handle->fd = -1;
jbe@96 155 handle->closed = 1;
jbe@104 156 #if defined(TCP_NOPUSH)
jbe@96 157 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 158 #elif defined(TCP_CORK)
jbe@95 159 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 160 #endif
jbe@95 161 }
jbe@95 162 handle->nopush = nopush;
jbe@96 163 #else
jbe@96 164 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 165 #endif
jbe@95 166 }
jbe@95 167
jbe@86 168 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 169 moonbr_io_handle_t *handle;
jbe@85 170 lua_Integer maxread;
jbe@85 171 const char *terminatorstr;
jbe@85 172 size_t terminatorlen;
jbe@137 173 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 174 luaL_Buffer luabuf;
jbe@85 175 size_t luabufcnt = 0;
jbe@105 176 int remaining;
jbe@85 177 char *terminatorpos;
jbe@103 178 ssize_t bytesread;
jbe@85 179 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 180 maxread = luaL_optinteger(L, 2, 0);
jbe@85 181 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 182 if (terminatorlen) {
jbe@85 183 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 184 terminator = terminatorstr[0];
jbe@85 185 }
jbe@86 186 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 187 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 188 if (handle->readerr) {
jbe@85 189 lua_pushnil(L);
jbe@85 190 lua_pushliteral(L, "Previous read error");
jbe@85 191 return 2;
jbe@85 192 }
jbe@143 193 if (handle->fd < 0) {
jbe@143 194 /* fake EOF to simulate shutdown */
jbe@143 195 if (!drain) lua_pushliteral(L, "");
jbe@143 196 else lua_pushinteger(L, 0);
jbe@143 197 lua_pushliteral(L, "eof");
jbe@143 198 return 2;
jbe@143 199 }
jbe@105 200 handle->readerr = 1;
jbe@85 201 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 202 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 203 while (1) {
jbe@105 204 remaining = -1;
jbe@142 205 terminatorpos = NULL;
jbe@105 206 if (
jbe@105 207 maxread > 0 &&
jbe@143 208 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 209 ) {
jbe@142 210 remaining = (size_t)maxread - luabufcnt;
jbe@142 211 terminatorpos = memchr(
jbe@142 212 handle->readbuf + handle->readbufout,
jbe@142 213 terminator,
jbe@142 214 remaining
jbe@142 215 );
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@140 339 lua_pushvalue(L, 1);
jbe@140 340 lua_pushliteral(L, "r");
jbe@147 341 lua_callk(L, 2, 0, ctx, moonbr_io_read_cont);
jbe@140 342 }
jbe@140 343 if (ctx == 1) {
jbe@140 344 lua_pushvalue(L, 5);
jbe@140 345 } else {
jbe@140 346 luaL_Buffer buf;
jbe@140 347 lua_Integer i, chunkcount;
jbe@140 348 chunkcount = lua_rawlen(L, 5);
jbe@140 349 luaL_buffinit(L, &buf);
jbe@140 350 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 351 lua_rawgeti(L, 5, i);
jbe@140 352 luaL_addvalue(&buf);
jbe@140 353 }
jbe@140 354 luaL_pushresult(&buf);
jbe@140 355 }
jbe@143 356 lua_pushvalue(L, -2);
jbe@143 357 return 2;
jbe@140 358 }
jbe@140 359
jbe@140 360 static int moonbr_io_read_call(lua_State *L) {
jbe@140 361 lua_settop(L, 4);
jbe@140 362 lua_pushnil(L);
jbe@140 363 #if LUA_VERSION_NUM >= 503
jbe@140 364 return moonbr_io_read_cont(L, 0, 0);
jbe@140 365 #else
jbe@140 366 return moonbr_io_read_cont(L);
jbe@140 367 #endif
jbe@140 368 }
jbe@140 369
jbe@145 370 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 371
jbe@144 372 #if LUA_VERSION_NUM >= 503
jbe@144 373 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 374 #else
jbe@144 375 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 376 #endif
jbe@144 377 lua_Integer remaining, len;
jbe@144 378 size_t totallen = 0;
jbe@144 379 #if !(LUA_VERSION_NUM >= 503)
jbe@144 380 int ctx = 0;
jbe@144 381 lua_getctx(L, &ctx);
jbe@144 382 #endif
jbe@144 383 remaining = lua_tointeger(L, 3);
jbe@144 384 while (1) {
jbe@144 385 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 386 lua_pushvalue(L, 1);
jbe@144 387 lua_pushvalue(L, 3);
jbe@144 388 lua_pushvalue(L, 4);
jbe@144 389 lua_call(L, 3, 2);
jbe@144 390 if (lua_isnil(L, -2)) return 2;
jbe@144 391 lua_insert(L, -2);
jbe@144 392 len = lua_tointeger(L, -1);
jbe@144 393 lua_pop(L, 1);
jbe@144 394 totallen += len;
jbe@144 395 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 396 lua_pop(L, 1);
jbe@144 397 if (remaining >= 0 && len) {
jbe@144 398 remaining -= len;
jbe@144 399 lua_pushinteger(L, remaining);
jbe@144 400 lua_replace(L, 3);
jbe@144 401 }
jbe@144 402 lua_pushvalue(L, 2);
jbe@144 403 lua_pushvalue(L, 1);
jbe@144 404 lua_pushliteral(L, "r");
jbe@147 405 lua_callk(L, 2, 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@145 583 lua_pushvalue(L, 1);
jbe@145 584 lua_pushliteral(L, "w");
jbe@147 585 lua_callk(L, 2, 0, 0, moonbr_io_write_cont);
jbe@145 586 }
jbe@145 587 }
jbe@145 588
jbe@145 589 static int moonbr_io_write_call(lua_State *L) {
jbe@145 590 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 591 lua_insert(L, 3);
jbe@145 592 lua_pushvalue(L, 1);
jbe@145 593 lua_insert(L, 4);
jbe@145 594 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 595 if (lua_isnil(L, -2)) return 2;
jbe@145 596 if (!lua_tointeger(L, -2)) {
jbe@145 597 lua_pushvalue(L, 1);
jbe@145 598 return 1;
jbe@145 599 }
jbe@145 600 #if LUA_VERSION_NUM >= 503
jbe@145 601 return moonbr_io_write_cont(L, 0, 0);
jbe@145 602 #else
jbe@145 603 return moonbr_io_write_cont(L);
jbe@145 604 #endif
jbe@145 605 }
jbe@145 606
jbe@145 607 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 608
jbe@145 609 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 610 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 611 lua_insert(L, 3);
jbe@145 612 lua_pushvalue(L, 1);
jbe@145 613 lua_insert(L, 4);
jbe@145 614 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 615 if (lua_isnil(L, -2)) return 2;
jbe@145 616 if (!lua_tointeger(L, -2)) {
jbe@145 617 lua_pushvalue(L, 1);
jbe@145 618 return 1;
jbe@145 619 }
jbe@145 620 #if LUA_VERSION_NUM >= 503
jbe@145 621 return moonbr_io_write_cont(L, 0, 0);
jbe@145 622 #else
jbe@145 623 return moonbr_io_write_cont(L);
jbe@145 624 #endif
jbe@145 625 }
jbe@145 626
jbe@145 627 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 628
jbe@88 629 static int moonbr_io_finish(lua_State *L) {
jbe@88 630 moonbr_io_handle_t *handle;
jbe@88 631 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 632 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 633 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 634 if (handle->writeleft) {
jbe@94 635 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 636 lua_pushvalue(L, 1);
jbe@116 637 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 638 handle->finished = 1;
jbe@116 639 lua_error(L);
jbe@116 640 }
jbe@94 641 if (!lua_toboolean(L, -2)) {
jbe@94 642 handle->finished = 1;
jbe@94 643 return 2;
jbe@88 644 }
jbe@94 645 }
jbe@94 646 handle->finished = 1;
jbe@107 647 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 648 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 649 moonbr_io_errmsg();
jbe@88 650 lua_pushnil(L);
jbe@88 651 lua_pushstring(L, errmsg);
jbe@88 652 return 2;
jbe@88 653 }
jbe@94 654 } else {
jbe@94 655 if (close(handle->fd)) {
jbe@94 656 moonbr_io_errmsg();
jbe@94 657 handle->fd = -1;
jbe@94 658 lua_pushnil(L);
jbe@94 659 lua_pushstring(L, errmsg);
jbe@94 660 return 2;
jbe@94 661 }
jbe@94 662 handle->fd = -1; /* fake EOF on read */
jbe@88 663 }
jbe@88 664 lua_pushboolean(L, 1);
jbe@88 665 return 1;
jbe@88 666 }
jbe@88 667
jbe@94 668 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 669 moonbr_io_handle_t *handle;
jbe@83 670 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 671 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 672 if (!reset) {
jbe@87 673 if (handle->writeleft) {
jbe@87 674 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 675 lua_pushvalue(L, 1);
jbe@116 676 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 677 handle->closed = 1;
jbe@116 678 close(handle->fd);
jbe@116 679 handle->fd = -1;
jbe@116 680 lua_error(L);
jbe@116 681 }
jbe@129 682 handle->closed = 1;
jbe@87 683 if (!lua_toboolean(L, -2)) {
jbe@87 684 close(handle->fd);
jbe@87 685 handle->fd = -1;
jbe@87 686 return 2;
jbe@87 687 }
jbe@129 688 } else {
jbe@129 689 handle->closed = 1;
jbe@129 690 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 691 }
jbe@129 692 } else {
jbe@129 693 handle->closed = 1;
jbe@83 694 }
jbe@94 695 if (handle->fd >= 0) {
jbe@94 696 if (close(handle->fd)) {
jbe@94 697 moonbr_io_errmsg();
jbe@94 698 handle->fd = -1;
jbe@94 699 lua_pushnil(L);
jbe@94 700 lua_pushstring(L, errmsg);
jbe@94 701 return 2;
jbe@94 702 }
jbe@104 703 handle->fd = -1;
jbe@83 704 }
jbe@83 705 lua_pushboolean(L, 1);
jbe@83 706 return 1;
jbe@84 707
jbe@83 708 }
jbe@83 709
jbe@94 710 static int moonbr_io_close(lua_State *L) {
jbe@94 711 return moonbr_io_close_impl(L, 0);
jbe@94 712 }
jbe@94 713
jbe@84 714 static int moonbr_io_reset(lua_State *L) {
jbe@94 715 return moonbr_io_close_impl(L, 1);
jbe@84 716 }
jbe@84 717
jbe@108 718 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 719 moonbr_io_handle_t *handle;
jbe@88 720 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 721 if (handle->fd >= 0) {
jbe@88 722 lua_pushcfunction(L, moonbr_io_close);
jbe@88 723 lua_pushvalue(L, 1);
jbe@88 724 lua_pushinteger(L, 0);
jbe@88 725 lua_call(L, 2, 0);
jbe@88 726 }
jbe@88 727 return 0;
jbe@88 728 }
jbe@88 729
jbe@100 730 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 731 moonbr_io_handle_t *handle;
jbe@88 732 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 733 if (!handle->closed) {
jbe@100 734 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 735 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 736 lua_call(L, 1, 0);
jbe@88 737 }
jbe@88 738 }
jbe@88 739
jbe@107 740 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 741 moonbr_io_handle_t *handle;
jbe@107 742 struct sockaddr addr;
jbe@107 743 socklen_t addrlen;
jbe@79 744 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 745 handle->fd = fd;
jbe@107 746 addrlen = sizeof(addr);
jbe@107 747 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 748 if (errno != ENOTSOCK) {
jbe@107 749 moonbr_io_errmsg();
jbe@107 750 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 751 }
jbe@107 752 handle->issock = 0;
jbe@107 753 } else {
jbe@107 754 handle->issock = 1;
jbe@107 755 handle->addrfam = addr.sa_family;
jbe@107 756 }
jbe@94 757 handle->finished = 0;
jbe@94 758 handle->closed = 0;
jbe@81 759 handle->nonblocking = -1;
jbe@95 760 handle->nopush = -1;
jbe@85 761 handle->readerr = 0;
jbe@105 762 handle->readbufin = 0;
jbe@105 763 handle->readbufout = 0;
jbe@81 764 handle->writeerr = 0;
jbe@81 765 handle->writeleft = 0;
jbe@132 766 handle->flushedleft = 0;
jbe@83 767 handle->writeqin = 0;
jbe@83 768 handle->writeqout = 0;
jbe@81 769 handle->writeqoff = 0;
jbe@103 770 handle->writebufin = 0;
jbe@103 771 handle->writebufout = 0;
jbe@87 772 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 773 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 774 lua_setmetatable(L, -2);
jbe@79 775 lua_newtable(L); // uservalue
jbe@81 776 lua_newtable(L);
jbe@103 777 lua_setfield(L, -2, "writequeue");
jbe@79 778 lua_newtable(L); // public
jbe@107 779 if (handle->addrfam == AF_INET6) {
jbe@107 780 struct sockaddr_in6 addr_in6;
jbe@107 781 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 782 const char *addrstr;
jbe@107 783 addrlen = sizeof(addr_in6);
jbe@107 784 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 785 moonbr_io_errmsg();
jbe@107 786 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 787 }
jbe@107 788 if (addrlen > sizeof(addr_in6)) {
jbe@107 789 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 790 }
jbe@107 791 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 792 if (!addrstr) {
jbe@107 793 moonbr_io_errmsg();
jbe@107 794 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 795 } else {
jbe@107 796 lua_pushstring(L, addrstr);
jbe@107 797 lua_setfield(L, -2, "local_ip6");
jbe@107 798 }
jbe@107 799 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 800 lua_setfield(L, -2, "local_tcpport");
jbe@107 801 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 802 moonbr_io_errmsg();
jbe@107 803 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 804 }
jbe@107 805 if (addrlen > sizeof(addr_in6)) {
jbe@107 806 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 807 }
jbe@107 808 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 809 if (!addrstr) {
jbe@107 810 moonbr_io_errmsg();
jbe@107 811 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 812 } else {
jbe@107 813 lua_pushstring(L, addrstr);
jbe@107 814 lua_setfield(L, -2, "remote_ip6");
jbe@107 815 }
jbe@107 816 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 817 lua_setfield(L, -2, "remote_tcpport");
jbe@107 818 } else if (handle->addrfam == AF_INET) {
jbe@107 819 struct sockaddr_in addr_in;
jbe@107 820 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 821 const char *addrstr;
jbe@107 822 addrlen = sizeof(addr_in);
jbe@107 823 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 824 moonbr_io_errmsg();
jbe@107 825 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 826 }
jbe@107 827 if (addrlen > sizeof(addr_in)) {
jbe@107 828 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 829 }
jbe@107 830 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 831 if (!addrstr) {
jbe@107 832 moonbr_io_errmsg();
jbe@107 833 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 834 } else {
jbe@107 835 lua_pushstring(L, addrstr);
jbe@107 836 lua_setfield(L, -2, "local_ip4");
jbe@107 837 }
jbe@107 838 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 839 lua_setfield(L, -2, "local_tcpport");
jbe@107 840 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 841 moonbr_io_errmsg();
jbe@107 842 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 843 }
jbe@107 844 if (addrlen > sizeof(addr_in)) {
jbe@107 845 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 846 }
jbe@107 847 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 848 if (!addrstr) {
jbe@107 849 moonbr_io_errmsg();
jbe@107 850 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 851 } else {
jbe@107 852 lua_pushstring(L, addrstr);
jbe@107 853 lua_setfield(L, -2, "remote_ip4");
jbe@107 854 }
jbe@107 855 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 856 lua_setfield(L, -2, "remote_tcpport");
jbe@107 857 }
jbe@79 858 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 859 lua_setmetatable(L, -2);
jbe@79 860 lua_setfield(L, -2, "public");
jbe@79 861 lua_setuservalue(L, -2);
jbe@79 862 }
jbe@79 863
jbe@79 864 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 865 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 866 lua_getuservalue(L, 1);
jbe@79 867 lua_getfield(L, -1, "public");
jbe@79 868 lua_pushvalue(L, 2);
jbe@79 869 lua_gettable(L, -2);
jbe@79 870 return 1;
jbe@79 871 }
jbe@79 872
jbe@79 873 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 874 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 875 lua_getuservalue(L, 1);
jbe@79 876 lua_getfield(L, -1, "public");
jbe@79 877 lua_pushvalue(L, 2);
jbe@79 878 lua_pushvalue(L, 3);
jbe@79 879 lua_settable(L, -3);
jbe@79 880 return 0;
jbe@79 881 }
jbe@79 882
jbe@111 883 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 884 const char *path;
jbe@111 885 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 886 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 887 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 888 ) - 1; /* one byte for termination */
jbe@111 889 int sock;
jbe@111 890 path = luaL_checkstring(L, 1);
jbe@111 891 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 892 strcpy(sockaddr.sun_path, path);
jbe@111 893 sock = socket(
jbe@111 894 PF_LOCAL,
jbe@111 895 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 896 0
jbe@111 897 );
jbe@111 898 if (sock < 0) {
jbe@111 899 moonbr_io_errmsg();
jbe@111 900 lua_pushnil(L);
jbe@111 901 lua_pushstring(L, errmsg);
jbe@111 902 return 2;
jbe@111 903 }
jbe@111 904 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 905 if (!nonblocking && errno == EINTR) {
jbe@111 906 moonbr_io_errmsg();
jbe@111 907 close(sock);
jbe@111 908 lua_pushnil(L);
jbe@111 909 lua_pushstring(L, errmsg);
jbe@111 910 return 2;
jbe@111 911 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 912 moonbr_io_errmsg();
jbe@111 913 lua_pushnil(L);
jbe@111 914 lua_pushstring(L, errmsg);
jbe@111 915 return 2;
jbe@111 916 }
jbe@111 917 }
jbe@111 918 moonbr_io_pushhandle(L, sock);
jbe@111 919 return 1;
jbe@111 920 }
jbe@111 921
jbe@111 922 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 923 return moonbr_io_localconnect_impl(L, 0);
jbe@111 924 }
jbe@111 925
jbe@111 926 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 927 return moonbr_io_localconnect_impl(L, 1);
jbe@111 928 }
jbe@111 929
jbe@99 930 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 931 const char *host, *port;
jbe@98 932 struct addrinfo hints = { 0, };
jbe@98 933 struct addrinfo *res, *addrinfo;
jbe@98 934 int errcode;
jbe@98 935 int sock;
jbe@98 936 host = luaL_checkstring(L, 1);
jbe@98 937 port = luaL_checkstring(L, 2);
jbe@98 938 hints.ai_family = AF_UNSPEC;
jbe@98 939 hints.ai_socktype = SOCK_STREAM;
jbe@98 940 hints.ai_protocol = IPPROTO_TCP;
jbe@98 941 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 942 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 943 if (errcode) {
jbe@102 944 freeaddrinfo(res);
jbe@98 945 if (errcode == EAI_SYSTEM) {
jbe@98 946 moonbr_io_errmsg();
jbe@98 947 lua_pushnil(L);
jbe@98 948 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 949 } else {
jbe@98 950 lua_pushnil(L);
jbe@98 951 lua_pushstring(L, gai_strerror(errcode));
jbe@98 952 }
jbe@98 953 return 2;
jbe@98 954 }
jbe@98 955 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 956 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 957 }
jbe@98 958 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 959 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 960 }
jbe@98 961 addrinfo = res;
jbe@98 962 moonbr_io_tcpconnect_found:
jbe@99 963 sock = socket(
jbe@134 964 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 965 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 966 addrinfo->ai_protocol
jbe@99 967 );
jbe@98 968 if (sock < 0) {
jbe@98 969 moonbr_io_errmsg();
jbe@108 970 freeaddrinfo(res);
jbe@98 971 lua_pushnil(L);
jbe@98 972 lua_pushstring(L, errmsg);
jbe@108 973 return 2;
jbe@98 974 }
jbe@98 975 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 976 freeaddrinfo(res);
jbe@99 977 if (!nonblocking && errno == EINTR) {
jbe@99 978 moonbr_io_errmsg();
jbe@99 979 close(sock);
jbe@99 980 lua_pushnil(L);
jbe@99 981 lua_pushstring(L, errmsg);
jbe@99 982 return 2;
jbe@99 983 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 984 moonbr_io_errmsg();
jbe@99 985 lua_pushnil(L);
jbe@99 986 lua_pushstring(L, errmsg);
jbe@99 987 return 2;
jbe@99 988 }
jbe@108 989 } else {
jbe@108 990 freeaddrinfo(res);
jbe@98 991 }
jbe@107 992 moonbr_io_pushhandle(L, sock);
jbe@98 993 return 1;
jbe@98 994 }
jbe@98 995
jbe@99 996 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 997 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 998 }
jbe@99 999
jbe@99 1000 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1001 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1002 }
jbe@99 1003
jbe@112 1004 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1005 moonbr_io_listener_t *listener;
jbe@112 1006 const char *path;
jbe@118 1007 struct stat sb;
jbe@112 1008 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1009 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1010 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1011 ) - 1; /* one byte for termination */
jbe@112 1012 int sock;
jbe@112 1013 path = luaL_checkstring(L, 1);
jbe@112 1014 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1015 strcpy(sockaddr.sun_path, path);
jbe@118 1016 if (stat(path, &sb) == 0) {
jbe@118 1017 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1018 }
jbe@112 1019 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1020 listener->fd = -1;
jbe@112 1021 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1022 sock = socket(
jbe@112 1023 PF_LOCAL,
jbe@112 1024 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1025 0
jbe@112 1026 );
jbe@112 1027 if (sock < 0) {
jbe@112 1028 moonbr_io_errmsg();
jbe@112 1029 lua_pushnil(L);
jbe@112 1030 lua_pushstring(L, errmsg);
jbe@112 1031 return 2;
jbe@112 1032 }
jbe@112 1033 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1034 moonbr_io_errmsg();
jbe@112 1035 close(sock);
jbe@112 1036 lua_pushnil(L);
jbe@112 1037 lua_pushstring(L, errmsg);
jbe@112 1038 return 2;
jbe@112 1039 }
jbe@112 1040 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 1041 moonbr_io_errmsg();
jbe@112 1042 close(sock);
jbe@112 1043 lua_pushnil(L);
jbe@112 1044 lua_pushstring(L, errmsg);
jbe@112 1045 return 2;
jbe@112 1046 }
jbe@112 1047 listener->fd = sock;
jbe@118 1048 listener->addrfam = AF_LOCAL;
jbe@112 1049 listener->nonblocking = -1;
jbe@112 1050 return 1;
jbe@112 1051 }
jbe@112 1052
jbe@108 1053 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1054 moonbr_io_listener_t *listener;
jbe@108 1055 const char *host, *port;
jbe@108 1056 struct addrinfo hints = { 0, };
jbe@108 1057 struct addrinfo *res, *addrinfo;
jbe@108 1058 int errcode;
jbe@108 1059 int sock;
jbe@108 1060 host = luaL_optstring(L, 1, NULL);
jbe@108 1061 port = luaL_checkstring(L, 2);
jbe@108 1062 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1063 listener->fd = -1;
jbe@108 1064 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1065 hints.ai_family = AF_UNSPEC;
jbe@108 1066 hints.ai_socktype = SOCK_STREAM;
jbe@108 1067 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1068 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1069 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1070 if (errcode) {
jbe@108 1071 freeaddrinfo(res);
jbe@108 1072 if (errcode == EAI_SYSTEM) {
jbe@108 1073 moonbr_io_errmsg();
jbe@108 1074 lua_pushnil(L);
jbe@108 1075 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1076 } else {
jbe@108 1077 lua_pushnil(L);
jbe@108 1078 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1079 }
jbe@108 1080 return 2;
jbe@108 1081 }
jbe@108 1082 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1083 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1084 }
jbe@108 1085 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1086 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1087 }
jbe@108 1088 addrinfo = res;
jbe@108 1089 moonbr_io_tcpconnect_found:
jbe@118 1090 listener->addrfam = addrinfo->ai_family;
jbe@108 1091 sock = socket(
jbe@134 1092 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1093 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1094 addrinfo->ai_protocol
jbe@108 1095 );
jbe@108 1096 if (sock < 0) {
jbe@108 1097 moonbr_io_errmsg();
jbe@108 1098 freeaddrinfo(res);
jbe@108 1099 lua_pushnil(L);
jbe@108 1100 lua_pushstring(L, errmsg);
jbe@108 1101 return 2;
jbe@108 1102 }
jbe@120 1103 {
jbe@120 1104 static const int reuseval = 1;
jbe@120 1105 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1106 moonbr_io_errmsg();
jbe@120 1107 freeaddrinfo(res);
jbe@120 1108 close(sock);
jbe@120 1109 lua_pushnil(L);
jbe@120 1110 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1111 return 2;
jbe@120 1112 }
jbe@120 1113 }
jbe@108 1114 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1115 moonbr_io_errmsg();
jbe@108 1116 freeaddrinfo(res);
jbe@108 1117 close(sock);
jbe@108 1118 lua_pushnil(L);
jbe@108 1119 lua_pushstring(L, errmsg);
jbe@108 1120 return 2;
jbe@108 1121 }
jbe@108 1122 freeaddrinfo(res);
jbe@108 1123 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1124 moonbr_io_errmsg();
jbe@108 1125 close(sock);
jbe@108 1126 lua_pushnil(L);
jbe@108 1127 lua_pushstring(L, errmsg);
jbe@108 1128 return 2;
jbe@108 1129 }
jbe@108 1130 listener->fd = sock;
jbe@108 1131 listener->nonblocking = -1;
jbe@108 1132 return 1;
jbe@108 1133 }
jbe@108 1134
jbe@108 1135 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1136 moonbr_io_listener_t *listener;
jbe@108 1137 int fd;
jbe@108 1138 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1139 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1140 if (listener->nonblocking != nonblocking) {
jbe@108 1141 int flags;
jbe@108 1142 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1143 if (flags == -1) {
jbe@108 1144 moonbr_io_errmsg();
jbe@108 1145 close(listener->fd);
jbe@108 1146 listener->fd = -1;
jbe@108 1147 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1148 }
jbe@108 1149 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1150 else flags &= ~O_NONBLOCK;
jbe@108 1151 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1152 moonbr_io_errmsg();
jbe@108 1153 close(listener->fd);
jbe@108 1154 listener->fd = -1;
jbe@108 1155 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1156 }
jbe@108 1157 listener->nonblocking = nonblocking;
jbe@108 1158 }
jbe@108 1159 while (1) {
jbe@108 1160 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1161 if (fd < 0) {
jbe@108 1162 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1163 lua_pushboolean(L, 0);
jbe@108 1164 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1165 return 2;
jbe@108 1166 } else if (errno != EINTR) {
jbe@108 1167 moonbr_io_errmsg();
jbe@108 1168 lua_pushnil(L);
jbe@108 1169 lua_pushstring(L, errmsg);
jbe@108 1170 return 2;
jbe@108 1171 }
jbe@108 1172 } else {
jbe@108 1173 moonbr_io_pushhandle(L, fd);
jbe@108 1174 return 1;
jbe@108 1175 }
jbe@108 1176 }
jbe@108 1177 }
jbe@108 1178
jbe@108 1179 static int moonbr_io_accept(lua_State *L) {
jbe@108 1180 return moonbr_io_accept_impl(L, 0);
jbe@108 1181 }
jbe@108 1182
jbe@108 1183 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1184 return moonbr_io_accept_impl(L, 1);
jbe@108 1185 }
jbe@108 1186
jbe@108 1187 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1188 moonbr_io_listener_t *listener;
jbe@118 1189 struct sockaddr_un addr;
jbe@118 1190 socklen_t addrlen;
jbe@118 1191 struct stat sb;
jbe@108 1192 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1193 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1194 addrlen = sizeof(addr);
jbe@118 1195 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1196 if (close(listener->fd)) {
jbe@108 1197 moonbr_io_errmsg();
jbe@108 1198 listener->fd = -1;
jbe@118 1199 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1200 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1201 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1202 }
jbe@118 1203 }
jbe@108 1204 lua_pushnil(L);
jbe@108 1205 lua_pushstring(L, errmsg);
jbe@108 1206 return 2;
jbe@108 1207 }
jbe@108 1208 listener->fd = -1;
jbe@118 1209 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1210 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1211 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1212 }
jbe@118 1213 }
jbe@108 1214 lua_pushboolean(L, 1);
jbe@108 1215 return 1;
jbe@108 1216 }
jbe@108 1217
jbe@108 1218 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1219 moonbr_io_listener_t *listener;
jbe@108 1220 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1221 if (listener->fd >= 0) close(listener->fd);
jbe@108 1222 listener->fd = -1;
jbe@108 1223 return 0;
jbe@108 1224 }
jbe@108 1225
jbe@106 1226 static int moonbr_io_poll(lua_State *L) {
jbe@106 1227 moonbr_io_handle_t *handle;
jbe@108 1228 moonbr_io_listener_t *listener;
jbe@106 1229 int fd, isnum;
jbe@106 1230 int nfds = 0;
jbe@106 1231 fd_set readfds, writefds, exceptfds;
jbe@106 1232 struct timeval timeout = {0, };
jbe@106 1233 int status;
jbe@106 1234 FD_ZERO(&readfds);
jbe@106 1235 FD_ZERO(&writefds);
jbe@106 1236 FD_ZERO(&exceptfds);
jbe@106 1237 if (!lua_isnoneornil(L, 1)) {
jbe@106 1238 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1239 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1240 if (lua_toboolean(L, -1)) {
jbe@106 1241 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1242 if (handle) {
jbe@109 1243 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1244 fd = handle->fd;
jbe@122 1245 if (
jbe@122 1246 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1247 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1248 ) {
jbe@109 1249 lua_pushboolean(L, 1);
jbe@109 1250 return 1;
jbe@109 1251 }
jbe@106 1252 } else {
jbe@108 1253 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1254 if (listener) {
jbe@108 1255 fd = listener->fd;
jbe@108 1256 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1257 } else {
jbe@108 1258 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1259 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1260 }
jbe@106 1261 }
jbe@138 1262 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1263 FD_SET(fd, &readfds);
jbe@106 1264 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1265 }
jbe@106 1266 }
jbe@106 1267 }
jbe@106 1268 if (!lua_isnoneornil(L, 2)) {
jbe@106 1269 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1270 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1271 if (lua_toboolean(L, -1)) {
jbe@106 1272 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1273 if (handle) {
jbe@109 1274 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1275 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1276 fd = handle->fd;
jbe@106 1277 } else {
jbe@108 1278 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1279 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1280 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1281 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1282 }
jbe@138 1283 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1284 FD_SET(fd, &writefds);
jbe@106 1285 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1286 }
jbe@106 1287 }
jbe@106 1288 }
jbe@106 1289 if (!lua_isnoneornil(L, 3)) {
jbe@106 1290 lua_Number n;
jbe@106 1291 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1292 if (isnum && n<0) {
jbe@146 1293 lua_pushboolean(L, 0);
jbe@146 1294 lua_pushliteral(L, "Negative timeout");
jbe@146 1295 return 2;
jbe@146 1296 } else if (isnum && n>=0 && n<100000000) {
jbe@106 1297 timeout.tv_sec = n;
jbe@106 1298 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1299 } else {
jbe@106 1300 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1301 }
jbe@106 1302 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1303 } else {
jbe@106 1304 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1305 }
jbe@106 1306 if (status == -1) {
jbe@106 1307 if (errno == EINTR) {
jbe@146 1308 lua_pushnil(L);
jbe@106 1309 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1310 return 2;
jbe@106 1311 } else {
jbe@106 1312 moonbr_io_errmsg();
jbe@106 1313 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1314 }
jbe@106 1315 } else if (status == 0) {
jbe@106 1316 lua_pushboolean(L, 0);
jbe@106 1317 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1318 return 2;
jbe@106 1319 } else {
jbe@106 1320 lua_pushboolean(L, 1);
jbe@106 1321 return 1;
jbe@106 1322 }
jbe@106 1323 }
jbe@106 1324
jbe@115 1325 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1326 lua_Number sub;
jbe@115 1327 struct timespec tp;
jbe@115 1328 sub = luaL_optnumber(L, 1, 0);
jbe@115 1329 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1330 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1331 }
jbe@115 1332 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1333 return 1;
jbe@115 1334 }
jbe@115 1335
jbe@79 1336 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1337 {"read", moonbr_io_read},
jbe@85 1338 {"read_nb", moonbr_io_read_nb},
jbe@140 1339 {"read_call", moonbr_io_read_call},
jbe@140 1340 {"read_yield", moonbr_io_read_yield},
jbe@86 1341 {"drain", moonbr_io_drain},
jbe@86 1342 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1343 {"drain_call", moonbr_io_drain_call},
jbe@144 1344 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1345 {"write", moonbr_io_write},
jbe@81 1346 {"write_nb", moonbr_io_write_nb},
jbe@145 1347 {"write_call", moonbr_io_write_call},
jbe@145 1348 {"write_yield", moonbr_io_write_yield},
jbe@80 1349 {"flush", moonbr_io_flush},
jbe@81 1350 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1351 {"flush_call", moonbr_io_flush_call},
jbe@145 1352 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1353 {"finish", moonbr_io_finish},
jbe@87 1354 {"close", moonbr_io_close},
jbe@85 1355 {"reset", moonbr_io_reset},
jbe@79 1356 {NULL, NULL}
jbe@79 1357 };
jbe@79 1358
jbe@79 1359 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1360 {"__index", moonbr_io_handleindex},
jbe@79 1361 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1362 {"__gc", moonbr_io_handlegc},
jbe@108 1363 {NULL, NULL}
jbe@108 1364 };
jbe@108 1365
jbe@108 1366 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1367 {"accept", moonbr_io_accept},
jbe@108 1368 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1369 {"close", moonbr_io_unlisten},
jbe@108 1370 {NULL, NULL}
jbe@108 1371 };
jbe@108 1372
jbe@108 1373 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1374 {"__gc", moonbr_io_listenergc},
jbe@79 1375 {NULL, NULL}
jbe@79 1376 };
jbe@79 1377
jbe@79 1378 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1379 {"localconnect", moonbr_io_localconnect},
jbe@111 1380 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1381 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1382 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1383 {"locallisten", moonbr_io_locallisten},
jbe@108 1384 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1385 {"poll", moonbr_io_poll},
jbe@115 1386 {"timeref", moonbr_io_timeref},
jbe@79 1387 {NULL, NULL}
jbe@79 1388 };
jbe@79 1389
jbe@79 1390 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1391
jbe@113 1392 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1393
jbe@80 1394 lua_newtable(L); // module
jbe@80 1395
jbe@146 1396 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@146 1397 lua_setfield(L, -2, "block");
jbe@146 1398
jbe@79 1399 lua_newtable(L); // public metatable
jbe@79 1400 lua_newtable(L); // handle methods
jbe@79 1401 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1402 lua_pushvalue(L, -1);
jbe@146 1403 lua_setfield(L, -4, "handle_pt");
jbe@79 1404 lua_setfield(L, -2, "__index");
jbe@79 1405 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1406
jbe@79 1407 lua_newtable(L); // handle metatable
jbe@79 1408 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 1409 lua_pushvalue(L, -1);
jbe@146 1410 lua_setfield(L, -3, "handle_mt");
jbe@79 1411 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1412
jbe@108 1413 lua_newtable(L); // listener metatable
jbe@108 1414 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1415 lua_newtable(L); // listener methods
jbe@108 1416 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1417 lua_pushvalue(L, -1);
jbe@146 1418 lua_setfield(L, -4, "listener_pt");
jbe@108 1419 lua_setfield(L, -2, "__index");
jbe@146 1420 lua_pushvalue(L, -1);
jbe@146 1421 lua_setfield(L, -3, "listener_mt");
jbe@108 1422 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1423
jbe@79 1424 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1425 return 1;
jbe@79 1426
jbe@79 1427 }
jbe@79 1428

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