moonbridge

annotate moonbridge_io.c @ 139:f148bd2b3d05

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Added moonbridge_io.h to Makefile; Added stub for moonbridge_websocket.c (with base64'd SHA-1)
author jbe
date Sat Apr 18 01:33:38 2015 +0200 (2015-04-18)
parents 2097b1835d96
children 9ca22af4d4b1
rev   line source
jbe@79 1
jbe@137 2 #if defined(__linux__)
jbe@137 3 #define _GNU_SOURCE
jbe@137 4 #endif
jbe@79 5 #include <stdlib.h>
jbe@135 6 #include <stdint.h>
jbe@135 7 #include <string.h>
jbe@135 8 #include <errno.h>
jbe@79 9 #include <unistd.h>
jbe@135 10 #include <signal.h>
jbe@135 11 #include <fcntl.h>
jbe@135 12 #include <sys/stat.h>
jbe@79 13 #include <sys/socket.h>
jbe@111 14 #include <sys/un.h>
jbe@95 15 #include <netinet/in.h>
jbe@95 16 #include <netinet/tcp.h>
jbe@135 17 #include <sys/select.h>
jbe@136 18 #include <time.h>
jbe@135 19 #include <netdb.h>
jbe@107 20 #include <arpa/inet.h>
jbe@79 21
jbe@79 22 #include <lua.h>
jbe@79 23 #include <lauxlib.h>
jbe@79 24 #include <lualib.h>
jbe@79 25
jbe@80 26 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 27 #define MOONBR_IO_READBUFLEN 4096
jbe@80 28 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 29
jbe@108 30 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 31
jbe@80 32 #define moonbr_io_errmsg() \
jbe@80 33 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 34 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 35
jbe@79 36 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 37 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 38 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 39
jbe@79 40 typedef struct {
jbe@79 41 int fd;
jbe@107 42 int issock;
jbe@107 43 sa_family_t addrfam;
jbe@94 44 int finished;
jbe@94 45 int closed;
jbe@81 46 int nonblocking;
jbe@95 47 int nopush;
jbe@85 48 int readerr;
jbe@105 49 int readbufin;
jbe@105 50 int readbufout;
jbe@81 51 int writeerr;
jbe@83 52 size_t writeleft;
jbe@132 53 size_t flushedleft;
jbe@83 54 #if LUA_VERSION_NUM >= 503
jbe@83 55 lua_Integer writeqin;
jbe@83 56 lua_Integer writeqout;
jbe@83 57 #else
jbe@83 58 int writeqin;
jbe@83 59 int writeqout;
jbe@83 60 #endif
jbe@83 61 size_t writeqoff;
jbe@103 62 int writebufin;
jbe@103 63 int writebufout;
jbe@85 64 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 65 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 66 } moonbr_io_handle_t;
jbe@79 67
jbe@108 68 typedef struct {
jbe@108 69 int fd;
jbe@118 70 sa_family_t addrfam;
jbe@108 71 int nonblocking;
jbe@108 72 } moonbr_io_listener_t;
jbe@108 73
jbe@81 74 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 75 int flags;
jbe@95 76 if (handle->nonblocking == nonblocking) return;
jbe@95 77 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 78 if (flags == -1) {
jbe@95 79 moonbr_io_errmsg();
jbe@96 80 close(handle->fd);
jbe@96 81 handle->fd = -1;
jbe@96 82 handle->closed = 1;
jbe@95 83 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 84 }
jbe@95 85 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 86 else flags &= ~O_NONBLOCK;
jbe@95 87 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 88 moonbr_io_errmsg();
jbe@96 89 close(handle->fd);
jbe@96 90 handle->fd = -1;
jbe@96 91 handle->closed = 1;
jbe@95 92 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 93 }
jbe@95 94 handle->nonblocking = nonblocking;
jbe@81 95 }
jbe@81 96
jbe@87 97 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 98 struct linger lingerval = { 0, };
jbe@107 99 if (!handle->issock) return;
jbe@87 100 if (timeout >= 0) {
jbe@87 101 lingerval.l_onoff = 1;
jbe@87 102 lingerval.l_linger = timeout;
jbe@87 103 }
jbe@87 104 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 105 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 while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 110 }
jbe@87 111 }
jbe@87 112
jbe@133 113 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 114 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 115 if (
jbe@107 116 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 117 handle->nopush == nopush
jbe@107 118 ) return;
jbe@96 119 #if defined(TCP_NOPUSH)
jbe@96 120 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 121 #elif defined(TCP_CORK)
jbe@104 122 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 123 #endif
jbe@96 124 moonbr_io_errmsg();
jbe@96 125 close(handle->fd);
jbe@96 126 handle->fd = -1;
jbe@96 127 handle->closed = 1;
jbe@104 128 #if defined(TCP_NOPUSH)
jbe@96 129 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 130 #elif defined(TCP_CORK)
jbe@95 131 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 132 #endif
jbe@95 133 }
jbe@95 134 handle->nopush = nopush;
jbe@96 135 #else
jbe@96 136 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 137 #endif
jbe@95 138 }
jbe@95 139
jbe@86 140 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 141 moonbr_io_handle_t *handle;
jbe@85 142 lua_Integer maxread;
jbe@85 143 const char *terminatorstr;
jbe@85 144 size_t terminatorlen;
jbe@137 145 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 146 luaL_Buffer luabuf;
jbe@85 147 size_t luabufcnt = 0;
jbe@105 148 int remaining;
jbe@85 149 char *terminatorpos;
jbe@103 150 ssize_t bytesread;
jbe@85 151 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 152 maxread = luaL_optinteger(L, 2, 0);
jbe@85 153 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 154 if (terminatorlen) {
jbe@85 155 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 156 terminator = terminatorstr[0];
jbe@85 157 }
jbe@86 158 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 159 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 160 if (handle->readerr) {
jbe@85 161 lua_pushnil(L);
jbe@85 162 lua_pushliteral(L, "Previous read error");
jbe@85 163 return 2;
jbe@85 164 }
jbe@105 165 handle->readerr = 1;
jbe@104 166 if (handle->fd < 0) goto moonbr_io_read_impl_eof; /* fake EOF to simulate shutdown */
jbe@85 167 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 168 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 169 while (1) {
jbe@105 170 remaining = -1;
jbe@105 171 if (
jbe@105 172 maxread > 0 &&
jbe@105 173 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 174 ) {
jbe@105 175 remaining = maxread - luabufcnt;
jbe@85 176 } else if (terminatorlen) {
jbe@105 177 terminatorpos = memchr(
jbe@105 178 handle->readbuf + handle->readbufout,
jbe@105 179 terminator,
jbe@105 180 handle->readbufin - handle->readbufout
jbe@105 181 );
jbe@105 182 if (terminatorpos) remaining = 1 + (
jbe@105 183 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@105 184 );
jbe@85 185 }
jbe@105 186 if (remaining >= 0) {
jbe@86 187 if (!drain) {
jbe@105 188 luaL_addlstring(
jbe@105 189 &luabuf,
jbe@105 190 handle->readbuf + handle->readbufout,
jbe@105 191 remaining
jbe@105 192 );
jbe@86 193 luaL_pushresult(&luabuf);
jbe@90 194 } else {
jbe@105 195 luaL_pushresult(&luabuf);
jbe@105 196 lua_pop(L, 1);
jbe@105 197 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 198 }
jbe@105 199 handle->readbufout += remaining;
jbe@105 200 if (handle->readbufout == handle->readbufin) {
jbe@105 201 handle->readbufin = 0;
jbe@105 202 handle->readbufout =0;
jbe@105 203 }
jbe@104 204 handle->readerr = 0;
jbe@85 205 return 1;
jbe@85 206 }
jbe@105 207 if (!drain) luaL_addlstring(
jbe@105 208 &luabuf,
jbe@105 209 handle->readbuf + handle->readbufout,
jbe@105 210 handle->readbufin - handle->readbufout
jbe@105 211 );
jbe@105 212 luabufcnt += handle->readbufin - handle->readbufout;
jbe@85 213 do {
jbe@103 214 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 215 } while (bytesread < 0 && (errno == EINTR));
jbe@105 216 if (
jbe@105 217 bytesread == 0 || (
jbe@105 218 nonblocking &&
jbe@105 219 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 220 )
jbe@105 221 ) {
jbe@105 222 handle->readbufin = 0;
jbe@105 223 handle->readbufout = 0;
jbe@105 224 if (!drain) {
jbe@105 225 luaL_pushresult(&luabuf);
jbe@105 226 if (!luabufcnt && bytesread == 0) {
jbe@105 227 lua_pop(L, 1);
jbe@105 228 moonbr_io_read_impl_eof:
jbe@105 229 lua_pushboolean(L, 0);
jbe@105 230 lua_pushliteral(L, "End of file");
jbe@105 231 handle->readerr = 0;
jbe@105 232 return 2;
jbe@105 233 }
jbe@105 234 } else {
jbe@105 235 if (!luabufcnt && bytesread == 0) lua_pushboolean(L, 1);
jbe@105 236 else lua_pushboolean(L, luabufcnt);
jbe@105 237 }
jbe@105 238 handle->readerr = 0;
jbe@105 239 return 1;
jbe@105 240 }
jbe@103 241 if (bytesread < 0) {
jbe@85 242 moonbr_io_errmsg();
jbe@85 243 lua_pushnil(L);
jbe@85 244 lua_pushstring(L, errmsg);
jbe@85 245 return 2;
jbe@85 246 }
jbe@105 247 handle->readbufin = bytesread;
jbe@105 248 handle->readbufout = 0;
jbe@86 249 }
jbe@85 250 }
jbe@85 251
jbe@85 252 static int moonbr_io_read(lua_State *L) {
jbe@86 253 return moonbr_io_read_impl(L, 0, 0);
jbe@85 254 }
jbe@85 255
jbe@85 256 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 257 return moonbr_io_read_impl(L, 1, 0);
jbe@86 258 }
jbe@86 259
jbe@86 260 static int moonbr_io_drain(lua_State *L) {
jbe@86 261 return moonbr_io_read_impl(L, 0, 1);
jbe@86 262 }
jbe@86 263
jbe@86 264 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 265 return moonbr_io_read_impl(L, 1, 1);
jbe@85 266 }
jbe@85 267
jbe@81 268 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 269 moonbr_io_handle_t *handle;
jbe@80 270 int i, top;
jbe@80 271 const char *str;
jbe@92 272 size_t strlen;
jbe@103 273 ssize_t written;
jbe@80 274 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 275 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 276 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 277 if (handle->writeerr) {
jbe@80 278 lua_pushnil(L);
jbe@80 279 lua_pushliteral(L, "Previous write error");
jbe@80 280 return 2;
jbe@80 281 }
jbe@103 282 handle->writeerr = 1;
jbe@81 283 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 284 top = lua_gettop(L);
jbe@81 285 lua_getuservalue(L, 1);
jbe@103 286 lua_getfield(L, -1, "writequeue");
jbe@84 287 for (i=2; i<=top; i++) {
jbe@84 288 luaL_checklstring(L, i, &strlen);
jbe@84 289 lua_pushvalue(L, i);
jbe@84 290 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 291 handle->writeleft += strlen;
jbe@81 292 }
jbe@132 293 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 294 while (handle->writeqout != handle->writeqin) {
jbe@83 295 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 296 str = lua_tolstring(L, -1, &strlen);
jbe@92 297 while (handle->writeqoff < strlen) {
jbe@103 298 if (
jbe@132 299 strlen - handle->writeqoff <
jbe@103 300 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 301 ) {
jbe@103 302 memcpy(
jbe@103 303 handle->writebuf + handle->writebufin,
jbe@103 304 str + handle->writeqoff,
jbe@103 305 strlen - handle->writeqoff
jbe@103 306 );
jbe@103 307 handle->writebufin += strlen - handle->writeqoff;
jbe@80 308 break;
jbe@80 309 } else {
jbe@103 310 memcpy(
jbe@103 311 handle->writebuf + handle->writebufin,
jbe@103 312 str + handle->writeqoff,
jbe@103 313 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 314 );
jbe@103 315 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 316 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 317 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 318 written = write(
jbe@103 319 handle->fd,
jbe@103 320 handle->writebuf + handle->writebufout,
jbe@103 321 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 322 );
jbe@103 323 if (written < 0) {
jbe@81 324 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 325 goto moonbr_io_write_impl_block;
jbe@81 326 } else if (errno != EINTR) {
jbe@80 327 moonbr_io_errmsg();
jbe@80 328 lua_pushnil(L);
jbe@80 329 lua_pushstring(L, errmsg);
jbe@80 330 return 2;
jbe@80 331 }
jbe@103 332 } else {
jbe@103 333 handle->writebufout += written;
jbe@103 334 handle->writeleft -= written;
jbe@133 335 if (handle->flushedleft) {
jbe@133 336 if (written >= handle->flushedleft) {
jbe@133 337 handle->flushedleft = 0;
jbe@133 338 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 339 } else {
jbe@133 340 handle->flushedleft -= written;
jbe@133 341 }
jbe@133 342 }
jbe@80 343 }
jbe@80 344 }
jbe@103 345 handle->writebufin = 0;
jbe@103 346 handle->writebufout = 0;
jbe@80 347 }
jbe@80 348 }
jbe@81 349 handle->writeqoff = 0;
jbe@81 350 lua_pop(L, 1);
jbe@81 351 lua_pushnil(L);
jbe@83 352 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 353 }
jbe@132 354 while (handle->flushedleft) {
jbe@133 355 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 356 written = write(
jbe@132 357 handle->fd,
jbe@132 358 handle->writebuf + handle->writebufout,
jbe@132 359 handle->writebufin - handle->writebufout
jbe@132 360 );
jbe@132 361 if (written < 0) {
jbe@132 362 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 363 goto moonbr_io_write_impl_block;
jbe@132 364 } else if (errno != EINTR) {
jbe@132 365 moonbr_io_errmsg();
jbe@132 366 lua_pushnil(L);
jbe@132 367 lua_pushstring(L, errmsg);
jbe@132 368 return 2;
jbe@81 369 }
jbe@132 370 } else {
jbe@132 371 handle->writebufout += written;
jbe@132 372 handle->writeleft -= written;
jbe@133 373 if (handle->flushedleft) {
jbe@133 374 if (written >= handle->flushedleft) {
jbe@133 375 handle->flushedleft = 0;
jbe@133 376 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 377 } else {
jbe@133 378 handle->flushedleft -= written;
jbe@133 379 }
jbe@133 380 }
jbe@81 381 }
jbe@132 382 }
jbe@132 383 if (handle->writebufout == handle->writebufin) {
jbe@103 384 handle->writebufin = 0;
jbe@103 385 handle->writebufout = 0;
jbe@81 386 }
jbe@103 387 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 388 else lua_pushvalue(L, 1);
jbe@103 389 handle->writeerr = 0;
jbe@80 390 return 1;
jbe@81 391 moonbr_io_write_impl_block:
jbe@91 392 lua_pushinteger(L, handle->writeleft);
jbe@103 393 handle->writeerr = 0;
jbe@81 394 return 1;
jbe@81 395 }
jbe@81 396
jbe@81 397 static int moonbr_io_write(lua_State *L) {
jbe@81 398 return moonbr_io_write_impl(L, 0, 0);
jbe@81 399 }
jbe@81 400
jbe@81 401 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 402 return moonbr_io_write_impl(L, 1, 0);
jbe@80 403 }
jbe@80 404
jbe@80 405 static int moonbr_io_flush(lua_State *L) {
jbe@81 406 return moonbr_io_write_impl(L, 0, 1);
jbe@81 407 }
jbe@81 408
jbe@81 409 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 410 return moonbr_io_write_impl(L, 1, 1);
jbe@80 411 }
jbe@80 412
jbe@88 413 static int moonbr_io_finish(lua_State *L) {
jbe@88 414 moonbr_io_handle_t *handle;
jbe@88 415 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 416 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 417 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 418 if (handle->writeleft) {
jbe@94 419 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 420 lua_pushvalue(L, 1);
jbe@116 421 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 422 handle->finished = 1;
jbe@116 423 lua_error(L);
jbe@116 424 }
jbe@94 425 if (!lua_toboolean(L, -2)) {
jbe@94 426 handle->finished = 1;
jbe@94 427 return 2;
jbe@88 428 }
jbe@94 429 }
jbe@94 430 handle->finished = 1;
jbe@107 431 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 432 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 433 moonbr_io_errmsg();
jbe@88 434 lua_pushnil(L);
jbe@88 435 lua_pushstring(L, errmsg);
jbe@88 436 return 2;
jbe@88 437 }
jbe@94 438 } else {
jbe@94 439 if (close(handle->fd)) {
jbe@94 440 moonbr_io_errmsg();
jbe@94 441 handle->fd = -1;
jbe@94 442 lua_pushnil(L);
jbe@94 443 lua_pushstring(L, errmsg);
jbe@94 444 return 2;
jbe@94 445 }
jbe@94 446 handle->fd = -1; /* fake EOF on read */
jbe@88 447 }
jbe@88 448 lua_pushboolean(L, 1);
jbe@88 449 return 1;
jbe@88 450 }
jbe@88 451
jbe@94 452 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 453 moonbr_io_handle_t *handle;
jbe@83 454 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 455 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 456 if (!reset) {
jbe@87 457 if (handle->writeleft) {
jbe@87 458 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 459 lua_pushvalue(L, 1);
jbe@116 460 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 461 handle->closed = 1;
jbe@116 462 close(handle->fd);
jbe@116 463 handle->fd = -1;
jbe@116 464 lua_error(L);
jbe@116 465 }
jbe@129 466 handle->closed = 1;
jbe@87 467 if (!lua_toboolean(L, -2)) {
jbe@87 468 close(handle->fd);
jbe@87 469 handle->fd = -1;
jbe@87 470 return 2;
jbe@87 471 }
jbe@129 472 } else {
jbe@129 473 handle->closed = 1;
jbe@129 474 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 475 }
jbe@129 476 } else {
jbe@129 477 handle->closed = 1;
jbe@83 478 }
jbe@94 479 if (handle->fd >= 0) {
jbe@94 480 if (close(handle->fd)) {
jbe@94 481 moonbr_io_errmsg();
jbe@94 482 handle->fd = -1;
jbe@94 483 lua_pushnil(L);
jbe@94 484 lua_pushstring(L, errmsg);
jbe@94 485 return 2;
jbe@94 486 }
jbe@104 487 handle->fd = -1;
jbe@83 488 }
jbe@83 489 lua_pushboolean(L, 1);
jbe@83 490 return 1;
jbe@84 491
jbe@83 492 }
jbe@83 493
jbe@94 494 static int moonbr_io_close(lua_State *L) {
jbe@94 495 return moonbr_io_close_impl(L, 0);
jbe@94 496 }
jbe@94 497
jbe@84 498 static int moonbr_io_reset(lua_State *L) {
jbe@94 499 return moonbr_io_close_impl(L, 1);
jbe@84 500 }
jbe@84 501
jbe@108 502 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 503 moonbr_io_handle_t *handle;
jbe@88 504 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 505 if (handle->fd >= 0) {
jbe@88 506 lua_pushcfunction(L, moonbr_io_close);
jbe@88 507 lua_pushvalue(L, 1);
jbe@88 508 lua_pushinteger(L, 0);
jbe@88 509 lua_call(L, 2, 0);
jbe@88 510 }
jbe@88 511 return 0;
jbe@88 512 }
jbe@88 513
jbe@100 514 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 515 moonbr_io_handle_t *handle;
jbe@88 516 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 517 if (!handle->closed) {
jbe@100 518 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 519 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 520 lua_call(L, 1, 0);
jbe@88 521 }
jbe@88 522 }
jbe@88 523
jbe@107 524 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 525 moonbr_io_handle_t *handle;
jbe@107 526 struct sockaddr addr;
jbe@107 527 socklen_t addrlen;
jbe@79 528 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 529 handle->fd = fd;
jbe@107 530 addrlen = sizeof(addr);
jbe@107 531 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 532 if (errno != ENOTSOCK) {
jbe@107 533 moonbr_io_errmsg();
jbe@107 534 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 535 }
jbe@107 536 handle->issock = 0;
jbe@107 537 } else {
jbe@107 538 handle->issock = 1;
jbe@107 539 handle->addrfam = addr.sa_family;
jbe@107 540 }
jbe@94 541 handle->finished = 0;
jbe@94 542 handle->closed = 0;
jbe@81 543 handle->nonblocking = -1;
jbe@95 544 handle->nopush = -1;
jbe@85 545 handle->readerr = 0;
jbe@105 546 handle->readbufin = 0;
jbe@105 547 handle->readbufout = 0;
jbe@81 548 handle->writeerr = 0;
jbe@81 549 handle->writeleft = 0;
jbe@132 550 handle->flushedleft = 0;
jbe@83 551 handle->writeqin = 0;
jbe@83 552 handle->writeqout = 0;
jbe@81 553 handle->writeqoff = 0;
jbe@103 554 handle->writebufin = 0;
jbe@103 555 handle->writebufout = 0;
jbe@87 556 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 557 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 558 lua_setmetatable(L, -2);
jbe@79 559 lua_newtable(L); // uservalue
jbe@81 560 lua_newtable(L);
jbe@103 561 lua_setfield(L, -2, "writequeue");
jbe@79 562 lua_newtable(L); // public
jbe@107 563 if (handle->addrfam == AF_INET6) {
jbe@107 564 struct sockaddr_in6 addr_in6;
jbe@107 565 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 566 const char *addrstr;
jbe@107 567 addrlen = sizeof(addr_in6);
jbe@107 568 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 569 moonbr_io_errmsg();
jbe@107 570 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 571 }
jbe@107 572 if (addrlen > sizeof(addr_in6)) {
jbe@107 573 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 574 }
jbe@107 575 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 576 if (!addrstr) {
jbe@107 577 moonbr_io_errmsg();
jbe@107 578 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 579 } else {
jbe@107 580 lua_pushstring(L, addrstr);
jbe@107 581 lua_setfield(L, -2, "local_ip6");
jbe@107 582 }
jbe@107 583 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 584 lua_setfield(L, -2, "local_tcpport");
jbe@107 585 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 586 moonbr_io_errmsg();
jbe@107 587 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 588 }
jbe@107 589 if (addrlen > sizeof(addr_in6)) {
jbe@107 590 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 591 }
jbe@107 592 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 593 if (!addrstr) {
jbe@107 594 moonbr_io_errmsg();
jbe@107 595 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 596 } else {
jbe@107 597 lua_pushstring(L, addrstr);
jbe@107 598 lua_setfield(L, -2, "remote_ip6");
jbe@107 599 }
jbe@107 600 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 601 lua_setfield(L, -2, "remote_tcpport");
jbe@107 602 } else if (handle->addrfam == AF_INET) {
jbe@107 603 struct sockaddr_in addr_in;
jbe@107 604 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 605 const char *addrstr;
jbe@107 606 addrlen = sizeof(addr_in);
jbe@107 607 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 608 moonbr_io_errmsg();
jbe@107 609 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 610 }
jbe@107 611 if (addrlen > sizeof(addr_in)) {
jbe@107 612 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 613 }
jbe@107 614 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 615 if (!addrstr) {
jbe@107 616 moonbr_io_errmsg();
jbe@107 617 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 618 } else {
jbe@107 619 lua_pushstring(L, addrstr);
jbe@107 620 lua_setfield(L, -2, "local_ip4");
jbe@107 621 }
jbe@107 622 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 623 lua_setfield(L, -2, "local_tcpport");
jbe@107 624 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 625 moonbr_io_errmsg();
jbe@107 626 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 627 }
jbe@107 628 if (addrlen > sizeof(addr_in)) {
jbe@107 629 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 630 }
jbe@107 631 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 632 if (!addrstr) {
jbe@107 633 moonbr_io_errmsg();
jbe@107 634 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 635 } else {
jbe@107 636 lua_pushstring(L, addrstr);
jbe@107 637 lua_setfield(L, -2, "remote_ip4");
jbe@107 638 }
jbe@107 639 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 640 lua_setfield(L, -2, "remote_tcpport");
jbe@107 641 }
jbe@79 642 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 643 lua_setmetatable(L, -2);
jbe@79 644 lua_setfield(L, -2, "public");
jbe@79 645 lua_setuservalue(L, -2);
jbe@79 646 }
jbe@79 647
jbe@79 648 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 649 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 650 lua_getuservalue(L, 1);
jbe@79 651 lua_getfield(L, -1, "public");
jbe@79 652 lua_pushvalue(L, 2);
jbe@79 653 lua_gettable(L, -2);
jbe@79 654 return 1;
jbe@79 655 }
jbe@79 656
jbe@79 657 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 658 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 659 lua_getuservalue(L, 1);
jbe@79 660 lua_getfield(L, -1, "public");
jbe@79 661 lua_pushvalue(L, 2);
jbe@79 662 lua_pushvalue(L, 3);
jbe@79 663 lua_settable(L, -3);
jbe@79 664 return 0;
jbe@79 665 }
jbe@79 666
jbe@111 667 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 668 const char *path;
jbe@111 669 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 670 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 671 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 672 ) - 1; /* one byte for termination */
jbe@111 673 int sock;
jbe@111 674 path = luaL_checkstring(L, 1);
jbe@111 675 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 676 strcpy(sockaddr.sun_path, path);
jbe@111 677 sock = socket(
jbe@111 678 PF_LOCAL,
jbe@111 679 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 680 0
jbe@111 681 );
jbe@111 682 if (sock < 0) {
jbe@111 683 moonbr_io_errmsg();
jbe@111 684 lua_pushnil(L);
jbe@111 685 lua_pushstring(L, errmsg);
jbe@111 686 return 2;
jbe@111 687 }
jbe@111 688 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 689 if (!nonblocking && errno == EINTR) {
jbe@111 690 moonbr_io_errmsg();
jbe@111 691 close(sock);
jbe@111 692 lua_pushnil(L);
jbe@111 693 lua_pushstring(L, errmsg);
jbe@111 694 return 2;
jbe@111 695 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 696 moonbr_io_errmsg();
jbe@111 697 lua_pushnil(L);
jbe@111 698 lua_pushstring(L, errmsg);
jbe@111 699 return 2;
jbe@111 700 }
jbe@111 701 }
jbe@111 702 moonbr_io_pushhandle(L, sock);
jbe@111 703 return 1;
jbe@111 704 }
jbe@111 705
jbe@111 706 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 707 return moonbr_io_localconnect_impl(L, 0);
jbe@111 708 }
jbe@111 709
jbe@111 710 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 711 return moonbr_io_localconnect_impl(L, 1);
jbe@111 712 }
jbe@111 713
jbe@99 714 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 715 const char *host, *port;
jbe@98 716 struct addrinfo hints = { 0, };
jbe@98 717 struct addrinfo *res, *addrinfo;
jbe@98 718 int errcode;
jbe@98 719 int sock;
jbe@98 720 host = luaL_checkstring(L, 1);
jbe@98 721 port = luaL_checkstring(L, 2);
jbe@98 722 hints.ai_family = AF_UNSPEC;
jbe@98 723 hints.ai_socktype = SOCK_STREAM;
jbe@98 724 hints.ai_protocol = IPPROTO_TCP;
jbe@98 725 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 726 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 727 if (errcode) {
jbe@102 728 freeaddrinfo(res);
jbe@98 729 if (errcode == EAI_SYSTEM) {
jbe@98 730 moonbr_io_errmsg();
jbe@98 731 lua_pushnil(L);
jbe@98 732 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 733 } else {
jbe@98 734 lua_pushnil(L);
jbe@98 735 lua_pushstring(L, gai_strerror(errcode));
jbe@98 736 }
jbe@98 737 return 2;
jbe@98 738 }
jbe@98 739 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 740 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 741 }
jbe@98 742 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 743 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 744 }
jbe@98 745 addrinfo = res;
jbe@98 746 moonbr_io_tcpconnect_found:
jbe@99 747 sock = socket(
jbe@134 748 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 749 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 750 addrinfo->ai_protocol
jbe@99 751 );
jbe@98 752 if (sock < 0) {
jbe@98 753 moonbr_io_errmsg();
jbe@108 754 freeaddrinfo(res);
jbe@98 755 lua_pushnil(L);
jbe@98 756 lua_pushstring(L, errmsg);
jbe@108 757 return 2;
jbe@98 758 }
jbe@98 759 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 760 freeaddrinfo(res);
jbe@99 761 if (!nonblocking && errno == EINTR) {
jbe@99 762 moonbr_io_errmsg();
jbe@99 763 close(sock);
jbe@99 764 lua_pushnil(L);
jbe@99 765 lua_pushstring(L, errmsg);
jbe@99 766 return 2;
jbe@99 767 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 768 moonbr_io_errmsg();
jbe@99 769 lua_pushnil(L);
jbe@99 770 lua_pushstring(L, errmsg);
jbe@99 771 return 2;
jbe@99 772 }
jbe@108 773 } else {
jbe@108 774 freeaddrinfo(res);
jbe@98 775 }
jbe@107 776 moonbr_io_pushhandle(L, sock);
jbe@98 777 return 1;
jbe@98 778 }
jbe@98 779
jbe@99 780 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 781 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 782 }
jbe@99 783
jbe@99 784 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 785 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 786 }
jbe@99 787
jbe@112 788 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 789 moonbr_io_listener_t *listener;
jbe@112 790 const char *path;
jbe@118 791 struct stat sb;
jbe@112 792 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 793 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 794 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 795 ) - 1; /* one byte for termination */
jbe@112 796 int sock;
jbe@112 797 path = luaL_checkstring(L, 1);
jbe@112 798 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 799 strcpy(sockaddr.sun_path, path);
jbe@118 800 if (stat(path, &sb) == 0) {
jbe@118 801 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 802 }
jbe@112 803 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 804 listener->fd = -1;
jbe@112 805 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 806 sock = socket(
jbe@112 807 PF_LOCAL,
jbe@112 808 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 809 0
jbe@112 810 );
jbe@112 811 if (sock < 0) {
jbe@112 812 moonbr_io_errmsg();
jbe@112 813 lua_pushnil(L);
jbe@112 814 lua_pushstring(L, errmsg);
jbe@112 815 return 2;
jbe@112 816 }
jbe@112 817 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 818 moonbr_io_errmsg();
jbe@112 819 close(sock);
jbe@112 820 lua_pushnil(L);
jbe@112 821 lua_pushstring(L, errmsg);
jbe@112 822 return 2;
jbe@112 823 }
jbe@112 824 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 825 moonbr_io_errmsg();
jbe@112 826 close(sock);
jbe@112 827 lua_pushnil(L);
jbe@112 828 lua_pushstring(L, errmsg);
jbe@112 829 return 2;
jbe@112 830 }
jbe@112 831 listener->fd = sock;
jbe@118 832 listener->addrfam = AF_LOCAL;
jbe@112 833 listener->nonblocking = -1;
jbe@112 834 return 1;
jbe@112 835 }
jbe@112 836
jbe@108 837 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 838 moonbr_io_listener_t *listener;
jbe@108 839 const char *host, *port;
jbe@108 840 struct addrinfo hints = { 0, };
jbe@108 841 struct addrinfo *res, *addrinfo;
jbe@108 842 int errcode;
jbe@108 843 int sock;
jbe@108 844 host = luaL_optstring(L, 1, NULL);
jbe@108 845 port = luaL_checkstring(L, 2);
jbe@108 846 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 847 listener->fd = -1;
jbe@108 848 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 849 hints.ai_family = AF_UNSPEC;
jbe@108 850 hints.ai_socktype = SOCK_STREAM;
jbe@108 851 hints.ai_protocol = IPPROTO_TCP;
jbe@108 852 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 853 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 854 if (errcode) {
jbe@108 855 freeaddrinfo(res);
jbe@108 856 if (errcode == EAI_SYSTEM) {
jbe@108 857 moonbr_io_errmsg();
jbe@108 858 lua_pushnil(L);
jbe@108 859 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 860 } else {
jbe@108 861 lua_pushnil(L);
jbe@108 862 lua_pushstring(L, gai_strerror(errcode));
jbe@108 863 }
jbe@108 864 return 2;
jbe@108 865 }
jbe@108 866 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 867 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 868 }
jbe@108 869 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 870 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 871 }
jbe@108 872 addrinfo = res;
jbe@108 873 moonbr_io_tcpconnect_found:
jbe@118 874 listener->addrfam = addrinfo->ai_family;
jbe@108 875 sock = socket(
jbe@134 876 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 877 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 878 addrinfo->ai_protocol
jbe@108 879 );
jbe@108 880 if (sock < 0) {
jbe@108 881 moonbr_io_errmsg();
jbe@108 882 freeaddrinfo(res);
jbe@108 883 lua_pushnil(L);
jbe@108 884 lua_pushstring(L, errmsg);
jbe@108 885 return 2;
jbe@108 886 }
jbe@120 887 {
jbe@120 888 static const int reuseval = 1;
jbe@120 889 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 890 moonbr_io_errmsg();
jbe@120 891 freeaddrinfo(res);
jbe@120 892 close(sock);
jbe@120 893 lua_pushnil(L);
jbe@120 894 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 895 return 2;
jbe@120 896 }
jbe@120 897 }
jbe@108 898 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 899 moonbr_io_errmsg();
jbe@108 900 freeaddrinfo(res);
jbe@108 901 close(sock);
jbe@108 902 lua_pushnil(L);
jbe@108 903 lua_pushstring(L, errmsg);
jbe@108 904 return 2;
jbe@108 905 }
jbe@108 906 freeaddrinfo(res);
jbe@108 907 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 908 moonbr_io_errmsg();
jbe@108 909 close(sock);
jbe@108 910 lua_pushnil(L);
jbe@108 911 lua_pushstring(L, errmsg);
jbe@108 912 return 2;
jbe@108 913 }
jbe@108 914 listener->fd = sock;
jbe@108 915 listener->nonblocking = -1;
jbe@108 916 return 1;
jbe@108 917 }
jbe@108 918
jbe@108 919 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 920 moonbr_io_listener_t *listener;
jbe@108 921 int fd;
jbe@108 922 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 923 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 924 if (listener->nonblocking != nonblocking) {
jbe@108 925 int flags;
jbe@108 926 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 927 if (flags == -1) {
jbe@108 928 moonbr_io_errmsg();
jbe@108 929 close(listener->fd);
jbe@108 930 listener->fd = -1;
jbe@108 931 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 932 }
jbe@108 933 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 934 else flags &= ~O_NONBLOCK;
jbe@108 935 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 936 moonbr_io_errmsg();
jbe@108 937 close(listener->fd);
jbe@108 938 listener->fd = -1;
jbe@108 939 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 940 }
jbe@108 941 listener->nonblocking = nonblocking;
jbe@108 942 }
jbe@108 943 while (1) {
jbe@108 944 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 945 if (fd < 0) {
jbe@108 946 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 947 lua_pushboolean(L, 0);
jbe@108 948 lua_pushliteral(L, "No incoming connection pending");
jbe@108 949 return 2;
jbe@108 950 } else if (errno != EINTR) {
jbe@108 951 moonbr_io_errmsg();
jbe@108 952 lua_pushnil(L);
jbe@108 953 lua_pushstring(L, errmsg);
jbe@108 954 return 2;
jbe@108 955 }
jbe@108 956 } else {
jbe@108 957 moonbr_io_pushhandle(L, fd);
jbe@108 958 return 1;
jbe@108 959 }
jbe@108 960 }
jbe@108 961 }
jbe@108 962
jbe@108 963 static int moonbr_io_accept(lua_State *L) {
jbe@108 964 return moonbr_io_accept_impl(L, 0);
jbe@108 965 }
jbe@108 966
jbe@108 967 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 968 return moonbr_io_accept_impl(L, 1);
jbe@108 969 }
jbe@108 970
jbe@108 971 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 972 moonbr_io_listener_t *listener;
jbe@118 973 struct sockaddr_un addr;
jbe@118 974 socklen_t addrlen;
jbe@118 975 struct stat sb;
jbe@108 976 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 977 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 978 addrlen = sizeof(addr);
jbe@118 979 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 980 if (close(listener->fd)) {
jbe@108 981 moonbr_io_errmsg();
jbe@108 982 listener->fd = -1;
jbe@118 983 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 984 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 985 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 986 }
jbe@118 987 }
jbe@108 988 lua_pushnil(L);
jbe@108 989 lua_pushstring(L, errmsg);
jbe@108 990 return 2;
jbe@108 991 }
jbe@108 992 listener->fd = -1;
jbe@118 993 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 994 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 995 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 996 }
jbe@118 997 }
jbe@108 998 lua_pushboolean(L, 1);
jbe@108 999 return 1;
jbe@108 1000 }
jbe@108 1001
jbe@108 1002 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1003 moonbr_io_listener_t *listener;
jbe@108 1004 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1005 if (listener->fd >= 0) close(listener->fd);
jbe@108 1006 listener->fd = -1;
jbe@108 1007 return 0;
jbe@108 1008 }
jbe@108 1009
jbe@106 1010 static int moonbr_io_poll(lua_State *L) {
jbe@106 1011 moonbr_io_handle_t *handle;
jbe@108 1012 moonbr_io_listener_t *listener;
jbe@106 1013 int fd, isnum;
jbe@106 1014 int nfds = 0;
jbe@106 1015 fd_set readfds, writefds, exceptfds;
jbe@106 1016 struct timeval timeout = {0, };
jbe@106 1017 int status;
jbe@106 1018 FD_ZERO(&readfds);
jbe@106 1019 FD_ZERO(&writefds);
jbe@106 1020 FD_ZERO(&exceptfds);
jbe@106 1021 if (!lua_isnoneornil(L, 1)) {
jbe@106 1022 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1023 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1024 if (lua_toboolean(L, -1)) {
jbe@106 1025 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1026 if (handle) {
jbe@109 1027 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1028 fd = handle->fd;
jbe@122 1029 if (
jbe@122 1030 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1031 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1032 ) {
jbe@109 1033 lua_pushboolean(L, 1);
jbe@109 1034 return 1;
jbe@109 1035 }
jbe@106 1036 } else {
jbe@108 1037 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1038 if (listener) {
jbe@108 1039 fd = listener->fd;
jbe@108 1040 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1041 } else {
jbe@108 1042 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1043 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1044 }
jbe@106 1045 }
jbe@138 1046 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1047 FD_SET(fd, &readfds);
jbe@106 1048 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1049 }
jbe@106 1050 }
jbe@106 1051 }
jbe@106 1052 if (!lua_isnoneornil(L, 2)) {
jbe@106 1053 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1054 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1055 if (lua_toboolean(L, -1)) {
jbe@106 1056 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1057 if (handle) {
jbe@109 1058 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1059 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1060 fd = handle->fd;
jbe@106 1061 } else {
jbe@108 1062 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1063 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1064 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1065 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1066 }
jbe@138 1067 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1068 FD_SET(fd, &writefds);
jbe@106 1069 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1070 }
jbe@106 1071 }
jbe@106 1072 }
jbe@106 1073 if (!lua_isnoneornil(L, 3)) {
jbe@106 1074 lua_Number n;
jbe@106 1075 n = lua_tonumberx(L, 3, &isnum);
jbe@106 1076 if (isnum && n>=0 && n<100000000) {
jbe@106 1077 timeout.tv_sec = n;
jbe@106 1078 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1079 } else {
jbe@106 1080 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1081 }
jbe@106 1082 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1083 } else {
jbe@106 1084 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1085 }
jbe@106 1086 if (status == -1) {
jbe@106 1087 if (errno == EINTR) {
jbe@106 1088 lua_pushboolean(L, 0);
jbe@106 1089 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1090 return 2;
jbe@106 1091 } else {
jbe@106 1092 moonbr_io_errmsg();
jbe@106 1093 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1094 }
jbe@106 1095 } else if (status == 0) {
jbe@106 1096 lua_pushboolean(L, 0);
jbe@106 1097 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1098 return 2;
jbe@106 1099 } else {
jbe@106 1100 lua_pushboolean(L, 1);
jbe@106 1101 return 1;
jbe@106 1102 }
jbe@106 1103 }
jbe@106 1104
jbe@115 1105 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1106 lua_Number sub;
jbe@115 1107 struct timespec tp;
jbe@115 1108 sub = luaL_optnumber(L, 1, 0);
jbe@115 1109 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1110 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1111 }
jbe@115 1112 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1113 return 1;
jbe@115 1114 }
jbe@115 1115
jbe@79 1116 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1117 {"read", moonbr_io_read},
jbe@85 1118 {"read_nb", moonbr_io_read_nb},
jbe@86 1119 {"drain", moonbr_io_drain},
jbe@86 1120 {"drain_nb", moonbr_io_drain_nb},
jbe@80 1121 {"write", moonbr_io_write},
jbe@81 1122 {"write_nb", moonbr_io_write_nb},
jbe@80 1123 {"flush", moonbr_io_flush},
jbe@81 1124 {"flush_nb", moonbr_io_flush_nb},
jbe@88 1125 {"finish", moonbr_io_finish},
jbe@87 1126 {"close", moonbr_io_close},
jbe@85 1127 {"reset", moonbr_io_reset},
jbe@79 1128 {NULL, NULL}
jbe@79 1129 };
jbe@79 1130
jbe@79 1131 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1132 {"__index", moonbr_io_handleindex},
jbe@79 1133 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1134 {"__gc", moonbr_io_handlegc},
jbe@108 1135 {NULL, NULL}
jbe@108 1136 };
jbe@108 1137
jbe@108 1138 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1139 {"accept", moonbr_io_accept},
jbe@108 1140 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1141 {"close", moonbr_io_unlisten},
jbe@108 1142 {NULL, NULL}
jbe@108 1143 };
jbe@108 1144
jbe@108 1145 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1146 {"__gc", moonbr_io_listenergc},
jbe@79 1147 {NULL, NULL}
jbe@79 1148 };
jbe@79 1149
jbe@79 1150 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1151 {"localconnect", moonbr_io_localconnect},
jbe@111 1152 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1153 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1154 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1155 {"locallisten", moonbr_io_locallisten},
jbe@108 1156 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1157 {"poll", moonbr_io_poll},
jbe@115 1158 {"timeref", moonbr_io_timeref},
jbe@79 1159 {NULL, NULL}
jbe@79 1160 };
jbe@79 1161
jbe@79 1162 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1163
jbe@113 1164 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1165
jbe@80 1166 lua_newtable(L); // module
jbe@80 1167
jbe@79 1168 lua_newtable(L); // public metatable
jbe@79 1169 lua_newtable(L); // handle methods
jbe@79 1170 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1171 lua_pushvalue(L, -1);
jbe@108 1172 lua_setfield(L, -4, "prototype_handle");
jbe@79 1173 lua_setfield(L, -2, "__index");
jbe@79 1174 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1175
jbe@79 1176 lua_newtable(L); // handle metatable
jbe@79 1177 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 1178 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1179
jbe@108 1180 lua_newtable(L); // listener metatable
jbe@108 1181 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1182 lua_newtable(L); // listener methods
jbe@108 1183 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1184 lua_pushvalue(L, -1);
jbe@108 1185 lua_setfield(L, -4, "prototype_listener");
jbe@108 1186 lua_setfield(L, -2, "__index");
jbe@108 1187 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1188
jbe@79 1189 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1190 return 1;
jbe@79 1191
jbe@79 1192 }
jbe@79 1193

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