moonbridge

annotate moonbridge_io.c @ 136:ae23bcae95d1

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Restored Linux compatibility regarding #include section
author jbe
date Thu Apr 16 22:12:34 2015 +0200 (2015-04-16)
parents 795bc86be569
children 46ebdc5bf825
rev   line source
jbe@79 1
jbe@79 2 #include <stdlib.h>
jbe@135 3 #include <stdint.h>
jbe@135 4 #include <string.h>
jbe@135 5 #include <errno.h>
jbe@79 6 #include <unistd.h>
jbe@135 7 #include <signal.h>
jbe@135 8 #include <fcntl.h>
jbe@135 9 #include <sys/stat.h>
jbe@79 10 #include <sys/socket.h>
jbe@111 11 #include <sys/un.h>
jbe@95 12 #include <netinet/in.h>
jbe@95 13 #include <netinet/tcp.h>
jbe@135 14 #include <sys/select.h>
jbe@136 15 #include <time.h>
jbe@135 16 #include <netdb.h>
jbe@107 17 #include <arpa/inet.h>
jbe@79 18
jbe@79 19 #include <lua.h>
jbe@79 20 #include <lauxlib.h>
jbe@79 21 #include <lualib.h>
jbe@79 22
jbe@80 23 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 24 #define MOONBR_IO_READBUFLEN 4096
jbe@80 25 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 26
jbe@108 27 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 28
jbe@80 29 #define moonbr_io_errmsg() \
jbe@80 30 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 31 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 32
jbe@79 33 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 34 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 35 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 36
jbe@79 37 typedef struct {
jbe@79 38 int fd;
jbe@107 39 int issock;
jbe@107 40 sa_family_t addrfam;
jbe@94 41 int finished;
jbe@94 42 int closed;
jbe@81 43 int nonblocking;
jbe@95 44 int nopush;
jbe@85 45 int readerr;
jbe@105 46 int readbufin;
jbe@105 47 int readbufout;
jbe@81 48 int writeerr;
jbe@83 49 size_t writeleft;
jbe@132 50 size_t flushedleft;
jbe@83 51 #if LUA_VERSION_NUM >= 503
jbe@83 52 lua_Integer writeqin;
jbe@83 53 lua_Integer writeqout;
jbe@83 54 #else
jbe@83 55 int writeqin;
jbe@83 56 int writeqout;
jbe@83 57 #endif
jbe@83 58 size_t writeqoff;
jbe@103 59 int writebufin;
jbe@103 60 int writebufout;
jbe@85 61 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 62 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 63 } moonbr_io_handle_t;
jbe@79 64
jbe@108 65 typedef struct {
jbe@108 66 int fd;
jbe@118 67 sa_family_t addrfam;
jbe@108 68 int nonblocking;
jbe@108 69 } moonbr_io_listener_t;
jbe@108 70
jbe@81 71 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 72 int flags;
jbe@95 73 if (handle->nonblocking == nonblocking) return;
jbe@95 74 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 75 if (flags == -1) {
jbe@95 76 moonbr_io_errmsg();
jbe@96 77 close(handle->fd);
jbe@96 78 handle->fd = -1;
jbe@96 79 handle->closed = 1;
jbe@95 80 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 81 }
jbe@95 82 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 83 else flags &= ~O_NONBLOCK;
jbe@95 84 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 85 moonbr_io_errmsg();
jbe@96 86 close(handle->fd);
jbe@96 87 handle->fd = -1;
jbe@96 88 handle->closed = 1;
jbe@95 89 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 90 }
jbe@95 91 handle->nonblocking = nonblocking;
jbe@81 92 }
jbe@81 93
jbe@87 94 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 95 struct linger lingerval = { 0, };
jbe@107 96 if (!handle->issock) return;
jbe@87 97 if (timeout >= 0) {
jbe@87 98 lingerval.l_onoff = 1;
jbe@87 99 lingerval.l_linger = timeout;
jbe@87 100 }
jbe@87 101 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 102 moonbr_io_errmsg();
jbe@96 103 close(handle->fd);
jbe@96 104 handle->fd = -1;
jbe@96 105 handle->closed = 1;
jbe@95 106 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 107 }
jbe@87 108 }
jbe@87 109
jbe@133 110 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 111 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 112 if (
jbe@107 113 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 114 handle->nopush == nopush
jbe@107 115 ) return;
jbe@96 116 #if defined(TCP_NOPUSH)
jbe@96 117 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 118 #elif defined(TCP_CORK)
jbe@104 119 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 120 #endif
jbe@96 121 moonbr_io_errmsg();
jbe@96 122 close(handle->fd);
jbe@96 123 handle->fd = -1;
jbe@96 124 handle->closed = 1;
jbe@104 125 #if defined(TCP_NOPUSH)
jbe@96 126 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 127 #elif defined(TCP_CORK)
jbe@95 128 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 129 #endif
jbe@95 130 }
jbe@95 131 handle->nopush = nopush;
jbe@96 132 #else
jbe@96 133 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 134 #endif
jbe@95 135 }
jbe@95 136
jbe@86 137 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 138 moonbr_io_handle_t *handle;
jbe@85 139 lua_Integer maxread;
jbe@85 140 const char *terminatorstr;
jbe@85 141 size_t terminatorlen;
jbe@85 142 char terminator;
jbe@85 143 luaL_Buffer luabuf;
jbe@85 144 size_t luabufcnt = 0;
jbe@105 145 int remaining;
jbe@85 146 char *terminatorpos;
jbe@103 147 ssize_t bytesread;
jbe@85 148 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 149 maxread = luaL_optinteger(L, 2, 0);
jbe@85 150 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 151 if (terminatorlen) {
jbe@85 152 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 153 terminator = terminatorstr[0];
jbe@85 154 }
jbe@86 155 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 156 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 157 if (handle->readerr) {
jbe@85 158 lua_pushnil(L);
jbe@85 159 lua_pushliteral(L, "Previous read error");
jbe@85 160 return 2;
jbe@85 161 }
jbe@105 162 handle->readerr = 1;
jbe@104 163 if (handle->fd < 0) goto moonbr_io_read_impl_eof; /* fake EOF to simulate shutdown */
jbe@85 164 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 165 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 166 while (1) {
jbe@105 167 remaining = -1;
jbe@105 168 if (
jbe@105 169 maxread > 0 &&
jbe@105 170 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 171 ) {
jbe@105 172 remaining = maxread - luabufcnt;
jbe@85 173 } else if (terminatorlen) {
jbe@105 174 terminatorpos = memchr(
jbe@105 175 handle->readbuf + handle->readbufout,
jbe@105 176 terminator,
jbe@105 177 handle->readbufin - handle->readbufout
jbe@105 178 );
jbe@105 179 if (terminatorpos) remaining = 1 + (
jbe@105 180 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@105 181 );
jbe@85 182 }
jbe@105 183 if (remaining >= 0) {
jbe@86 184 if (!drain) {
jbe@105 185 luaL_addlstring(
jbe@105 186 &luabuf,
jbe@105 187 handle->readbuf + handle->readbufout,
jbe@105 188 remaining
jbe@105 189 );
jbe@86 190 luaL_pushresult(&luabuf);
jbe@90 191 } else {
jbe@105 192 luaL_pushresult(&luabuf);
jbe@105 193 lua_pop(L, 1);
jbe@105 194 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 195 }
jbe@105 196 handle->readbufout += remaining;
jbe@105 197 if (handle->readbufout == handle->readbufin) {
jbe@105 198 handle->readbufin = 0;
jbe@105 199 handle->readbufout =0;
jbe@105 200 }
jbe@104 201 handle->readerr = 0;
jbe@85 202 return 1;
jbe@85 203 }
jbe@105 204 if (!drain) luaL_addlstring(
jbe@105 205 &luabuf,
jbe@105 206 handle->readbuf + handle->readbufout,
jbe@105 207 handle->readbufin - handle->readbufout
jbe@105 208 );
jbe@105 209 luabufcnt += handle->readbufin - handle->readbufout;
jbe@85 210 do {
jbe@103 211 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 212 } while (bytesread < 0 && (errno == EINTR));
jbe@105 213 if (
jbe@105 214 bytesread == 0 || (
jbe@105 215 nonblocking &&
jbe@105 216 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 217 )
jbe@105 218 ) {
jbe@105 219 handle->readbufin = 0;
jbe@105 220 handle->readbufout = 0;
jbe@105 221 if (!drain) {
jbe@105 222 luaL_pushresult(&luabuf);
jbe@105 223 if (!luabufcnt && bytesread == 0) {
jbe@105 224 lua_pop(L, 1);
jbe@105 225 moonbr_io_read_impl_eof:
jbe@105 226 lua_pushboolean(L, 0);
jbe@105 227 lua_pushliteral(L, "End of file");
jbe@105 228 handle->readerr = 0;
jbe@105 229 return 2;
jbe@105 230 }
jbe@105 231 } else {
jbe@105 232 if (!luabufcnt && bytesread == 0) lua_pushboolean(L, 1);
jbe@105 233 else lua_pushboolean(L, luabufcnt);
jbe@105 234 }
jbe@105 235 handle->readerr = 0;
jbe@105 236 return 1;
jbe@105 237 }
jbe@103 238 if (bytesread < 0) {
jbe@85 239 moonbr_io_errmsg();
jbe@85 240 lua_pushnil(L);
jbe@85 241 lua_pushstring(L, errmsg);
jbe@85 242 return 2;
jbe@85 243 }
jbe@105 244 handle->readbufin = bytesread;
jbe@105 245 handle->readbufout = 0;
jbe@86 246 }
jbe@85 247 }
jbe@85 248
jbe@85 249 static int moonbr_io_read(lua_State *L) {
jbe@86 250 return moonbr_io_read_impl(L, 0, 0);
jbe@85 251 }
jbe@85 252
jbe@85 253 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 254 return moonbr_io_read_impl(L, 1, 0);
jbe@86 255 }
jbe@86 256
jbe@86 257 static int moonbr_io_drain(lua_State *L) {
jbe@86 258 return moonbr_io_read_impl(L, 0, 1);
jbe@86 259 }
jbe@86 260
jbe@86 261 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 262 return moonbr_io_read_impl(L, 1, 1);
jbe@85 263 }
jbe@85 264
jbe@81 265 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 266 moonbr_io_handle_t *handle;
jbe@80 267 int i, top;
jbe@80 268 const char *str;
jbe@92 269 size_t strlen;
jbe@103 270 ssize_t written;
jbe@80 271 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 272 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 273 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 274 if (handle->writeerr) {
jbe@80 275 lua_pushnil(L);
jbe@80 276 lua_pushliteral(L, "Previous write error");
jbe@80 277 return 2;
jbe@80 278 }
jbe@103 279 handle->writeerr = 1;
jbe@81 280 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 281 top = lua_gettop(L);
jbe@81 282 lua_getuservalue(L, 1);
jbe@103 283 lua_getfield(L, -1, "writequeue");
jbe@84 284 for (i=2; i<=top; i++) {
jbe@84 285 luaL_checklstring(L, i, &strlen);
jbe@84 286 lua_pushvalue(L, i);
jbe@84 287 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 288 handle->writeleft += strlen;
jbe@81 289 }
jbe@132 290 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 291 while (handle->writeqout != handle->writeqin) {
jbe@83 292 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 293 str = lua_tolstring(L, -1, &strlen);
jbe@92 294 while (handle->writeqoff < strlen) {
jbe@103 295 if (
jbe@132 296 strlen - handle->writeqoff <
jbe@103 297 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 298 ) {
jbe@103 299 memcpy(
jbe@103 300 handle->writebuf + handle->writebufin,
jbe@103 301 str + handle->writeqoff,
jbe@103 302 strlen - handle->writeqoff
jbe@103 303 );
jbe@103 304 handle->writebufin += strlen - handle->writeqoff;
jbe@80 305 break;
jbe@80 306 } else {
jbe@103 307 memcpy(
jbe@103 308 handle->writebuf + handle->writebufin,
jbe@103 309 str + handle->writeqoff,
jbe@103 310 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 311 );
jbe@103 312 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 313 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 314 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 315 written = write(
jbe@103 316 handle->fd,
jbe@103 317 handle->writebuf + handle->writebufout,
jbe@103 318 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 319 );
jbe@103 320 if (written < 0) {
jbe@81 321 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 322 goto moonbr_io_write_impl_block;
jbe@81 323 } else if (errno != EINTR) {
jbe@80 324 moonbr_io_errmsg();
jbe@80 325 lua_pushnil(L);
jbe@80 326 lua_pushstring(L, errmsg);
jbe@80 327 return 2;
jbe@80 328 }
jbe@103 329 } else {
jbe@103 330 handle->writebufout += written;
jbe@103 331 handle->writeleft -= written;
jbe@133 332 if (handle->flushedleft) {
jbe@133 333 if (written >= handle->flushedleft) {
jbe@133 334 handle->flushedleft = 0;
jbe@133 335 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 336 } else {
jbe@133 337 handle->flushedleft -= written;
jbe@133 338 }
jbe@133 339 }
jbe@80 340 }
jbe@80 341 }
jbe@103 342 handle->writebufin = 0;
jbe@103 343 handle->writebufout = 0;
jbe@80 344 }
jbe@80 345 }
jbe@81 346 handle->writeqoff = 0;
jbe@81 347 lua_pop(L, 1);
jbe@81 348 lua_pushnil(L);
jbe@83 349 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 350 }
jbe@132 351 while (handle->flushedleft) {
jbe@133 352 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 353 written = write(
jbe@132 354 handle->fd,
jbe@132 355 handle->writebuf + handle->writebufout,
jbe@132 356 handle->writebufin - handle->writebufout
jbe@132 357 );
jbe@132 358 if (written < 0) {
jbe@132 359 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 360 goto moonbr_io_write_impl_block;
jbe@132 361 } else if (errno != EINTR) {
jbe@132 362 moonbr_io_errmsg();
jbe@132 363 lua_pushnil(L);
jbe@132 364 lua_pushstring(L, errmsg);
jbe@132 365 return 2;
jbe@81 366 }
jbe@132 367 } else {
jbe@132 368 handle->writebufout += written;
jbe@132 369 handle->writeleft -= written;
jbe@133 370 if (handle->flushedleft) {
jbe@133 371 if (written >= handle->flushedleft) {
jbe@133 372 handle->flushedleft = 0;
jbe@133 373 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 374 } else {
jbe@133 375 handle->flushedleft -= written;
jbe@133 376 }
jbe@133 377 }
jbe@81 378 }
jbe@132 379 }
jbe@132 380 if (handle->writebufout == handle->writebufin) {
jbe@103 381 handle->writebufin = 0;
jbe@103 382 handle->writebufout = 0;
jbe@81 383 }
jbe@103 384 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 385 else lua_pushvalue(L, 1);
jbe@103 386 handle->writeerr = 0;
jbe@80 387 return 1;
jbe@81 388 moonbr_io_write_impl_block:
jbe@91 389 lua_pushinteger(L, handle->writeleft);
jbe@103 390 handle->writeerr = 0;
jbe@81 391 return 1;
jbe@81 392 }
jbe@81 393
jbe@81 394 static int moonbr_io_write(lua_State *L) {
jbe@81 395 return moonbr_io_write_impl(L, 0, 0);
jbe@81 396 }
jbe@81 397
jbe@81 398 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 399 return moonbr_io_write_impl(L, 1, 0);
jbe@80 400 }
jbe@80 401
jbe@80 402 static int moonbr_io_flush(lua_State *L) {
jbe@81 403 return moonbr_io_write_impl(L, 0, 1);
jbe@81 404 }
jbe@81 405
jbe@81 406 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 407 return moonbr_io_write_impl(L, 1, 1);
jbe@80 408 }
jbe@80 409
jbe@88 410 static int moonbr_io_finish(lua_State *L) {
jbe@88 411 moonbr_io_handle_t *handle;
jbe@88 412 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 413 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 414 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 415 if (handle->writeleft) {
jbe@94 416 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 417 lua_pushvalue(L, 1);
jbe@116 418 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 419 handle->finished = 1;
jbe@116 420 lua_error(L);
jbe@116 421 }
jbe@94 422 if (!lua_toboolean(L, -2)) {
jbe@94 423 handle->finished = 1;
jbe@94 424 return 2;
jbe@88 425 }
jbe@94 426 }
jbe@94 427 handle->finished = 1;
jbe@107 428 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 429 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 430 moonbr_io_errmsg();
jbe@88 431 lua_pushnil(L);
jbe@88 432 lua_pushstring(L, errmsg);
jbe@88 433 return 2;
jbe@88 434 }
jbe@94 435 } else {
jbe@94 436 if (close(handle->fd)) {
jbe@94 437 moonbr_io_errmsg();
jbe@94 438 handle->fd = -1;
jbe@94 439 lua_pushnil(L);
jbe@94 440 lua_pushstring(L, errmsg);
jbe@94 441 return 2;
jbe@94 442 }
jbe@94 443 handle->fd = -1; /* fake EOF on read */
jbe@88 444 }
jbe@88 445 lua_pushboolean(L, 1);
jbe@88 446 return 1;
jbe@88 447 }
jbe@88 448
jbe@94 449 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 450 moonbr_io_handle_t *handle;
jbe@83 451 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 452 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 453 if (!reset) {
jbe@87 454 if (handle->writeleft) {
jbe@87 455 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 456 lua_pushvalue(L, 1);
jbe@116 457 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 458 handle->closed = 1;
jbe@116 459 close(handle->fd);
jbe@116 460 handle->fd = -1;
jbe@116 461 lua_error(L);
jbe@116 462 }
jbe@129 463 handle->closed = 1;
jbe@87 464 if (!lua_toboolean(L, -2)) {
jbe@87 465 close(handle->fd);
jbe@87 466 handle->fd = -1;
jbe@87 467 return 2;
jbe@87 468 }
jbe@129 469 } else {
jbe@129 470 handle->closed = 1;
jbe@129 471 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 472 }
jbe@129 473 } else {
jbe@129 474 handle->closed = 1;
jbe@83 475 }
jbe@94 476 if (handle->fd >= 0) {
jbe@94 477 if (close(handle->fd)) {
jbe@94 478 moonbr_io_errmsg();
jbe@94 479 handle->fd = -1;
jbe@94 480 lua_pushnil(L);
jbe@94 481 lua_pushstring(L, errmsg);
jbe@94 482 return 2;
jbe@94 483 }
jbe@104 484 handle->fd = -1;
jbe@83 485 }
jbe@83 486 lua_pushboolean(L, 1);
jbe@83 487 return 1;
jbe@84 488
jbe@83 489 }
jbe@83 490
jbe@94 491 static int moonbr_io_close(lua_State *L) {
jbe@94 492 return moonbr_io_close_impl(L, 0);
jbe@94 493 }
jbe@94 494
jbe@84 495 static int moonbr_io_reset(lua_State *L) {
jbe@94 496 return moonbr_io_close_impl(L, 1);
jbe@84 497 }
jbe@84 498
jbe@108 499 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 500 moonbr_io_handle_t *handle;
jbe@88 501 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 502 if (handle->fd >= 0) {
jbe@88 503 lua_pushcfunction(L, moonbr_io_close);
jbe@88 504 lua_pushvalue(L, 1);
jbe@88 505 lua_pushinteger(L, 0);
jbe@88 506 lua_call(L, 2, 0);
jbe@88 507 }
jbe@88 508 return 0;
jbe@88 509 }
jbe@88 510
jbe@100 511 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 512 moonbr_io_handle_t *handle;
jbe@88 513 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 514 if (!handle->closed) {
jbe@100 515 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 516 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 517 lua_call(L, 1, 0);
jbe@88 518 }
jbe@88 519 }
jbe@88 520
jbe@107 521 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 522 moonbr_io_handle_t *handle;
jbe@107 523 struct sockaddr addr;
jbe@107 524 socklen_t addrlen;
jbe@79 525 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 526 handle->fd = fd;
jbe@107 527 addrlen = sizeof(addr);
jbe@107 528 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 529 if (errno != ENOTSOCK) {
jbe@107 530 moonbr_io_errmsg();
jbe@107 531 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 532 }
jbe@107 533 handle->issock = 0;
jbe@107 534 } else {
jbe@107 535 handle->issock = 1;
jbe@107 536 handle->addrfam = addr.sa_family;
jbe@107 537 }
jbe@94 538 handle->finished = 0;
jbe@94 539 handle->closed = 0;
jbe@81 540 handle->nonblocking = -1;
jbe@95 541 handle->nopush = -1;
jbe@85 542 handle->readerr = 0;
jbe@105 543 handle->readbufin = 0;
jbe@105 544 handle->readbufout = 0;
jbe@81 545 handle->writeerr = 0;
jbe@81 546 handle->writeleft = 0;
jbe@132 547 handle->flushedleft = 0;
jbe@83 548 handle->writeqin = 0;
jbe@83 549 handle->writeqout = 0;
jbe@81 550 handle->writeqoff = 0;
jbe@103 551 handle->writebufin = 0;
jbe@103 552 handle->writebufout = 0;
jbe@87 553 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 554 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 555 lua_setmetatable(L, -2);
jbe@79 556 lua_newtable(L); // uservalue
jbe@81 557 lua_newtable(L);
jbe@103 558 lua_setfield(L, -2, "writequeue");
jbe@79 559 lua_newtable(L); // public
jbe@107 560 if (handle->addrfam == AF_INET6) {
jbe@107 561 struct sockaddr_in6 addr_in6;
jbe@107 562 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 563 const char *addrstr;
jbe@107 564 addrlen = sizeof(addr_in6);
jbe@107 565 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 566 moonbr_io_errmsg();
jbe@107 567 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 568 }
jbe@107 569 if (addrlen > sizeof(addr_in6)) {
jbe@107 570 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 571 }
jbe@107 572 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 573 if (!addrstr) {
jbe@107 574 moonbr_io_errmsg();
jbe@107 575 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 576 } else {
jbe@107 577 lua_pushstring(L, addrstr);
jbe@107 578 lua_setfield(L, -2, "local_ip6");
jbe@107 579 }
jbe@107 580 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 581 lua_setfield(L, -2, "local_tcpport");
jbe@107 582 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 583 moonbr_io_errmsg();
jbe@107 584 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 585 }
jbe@107 586 if (addrlen > sizeof(addr_in6)) {
jbe@107 587 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 588 }
jbe@107 589 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 590 if (!addrstr) {
jbe@107 591 moonbr_io_errmsg();
jbe@107 592 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 593 } else {
jbe@107 594 lua_pushstring(L, addrstr);
jbe@107 595 lua_setfield(L, -2, "remote_ip6");
jbe@107 596 }
jbe@107 597 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 598 lua_setfield(L, -2, "remote_tcpport");
jbe@107 599 } else if (handle->addrfam == AF_INET) {
jbe@107 600 struct sockaddr_in addr_in;
jbe@107 601 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 602 const char *addrstr;
jbe@107 603 addrlen = sizeof(addr_in);
jbe@107 604 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 605 moonbr_io_errmsg();
jbe@107 606 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 607 }
jbe@107 608 if (addrlen > sizeof(addr_in)) {
jbe@107 609 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 610 }
jbe@107 611 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 612 if (!addrstr) {
jbe@107 613 moonbr_io_errmsg();
jbe@107 614 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 615 } else {
jbe@107 616 lua_pushstring(L, addrstr);
jbe@107 617 lua_setfield(L, -2, "local_ip4");
jbe@107 618 }
jbe@107 619 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 620 lua_setfield(L, -2, "local_tcpport");
jbe@107 621 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 622 moonbr_io_errmsg();
jbe@107 623 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 624 }
jbe@107 625 if (addrlen > sizeof(addr_in)) {
jbe@107 626 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 627 }
jbe@107 628 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 629 if (!addrstr) {
jbe@107 630 moonbr_io_errmsg();
jbe@107 631 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 632 } else {
jbe@107 633 lua_pushstring(L, addrstr);
jbe@107 634 lua_setfield(L, -2, "remote_ip4");
jbe@107 635 }
jbe@107 636 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 637 lua_setfield(L, -2, "remote_tcpport");
jbe@107 638 }
jbe@79 639 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 640 lua_setmetatable(L, -2);
jbe@79 641 lua_setfield(L, -2, "public");
jbe@79 642 lua_setuservalue(L, -2);
jbe@79 643 }
jbe@79 644
jbe@79 645 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 646 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 647 lua_getuservalue(L, 1);
jbe@79 648 lua_getfield(L, -1, "public");
jbe@79 649 lua_pushvalue(L, 2);
jbe@79 650 lua_gettable(L, -2);
jbe@79 651 return 1;
jbe@79 652 }
jbe@79 653
jbe@79 654 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 655 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 656 lua_getuservalue(L, 1);
jbe@79 657 lua_getfield(L, -1, "public");
jbe@79 658 lua_pushvalue(L, 2);
jbe@79 659 lua_pushvalue(L, 3);
jbe@79 660 lua_settable(L, -3);
jbe@79 661 return 0;
jbe@79 662 }
jbe@79 663
jbe@111 664 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 665 const char *path;
jbe@111 666 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 667 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 668 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 669 ) - 1; /* one byte for termination */
jbe@111 670 int sock;
jbe@111 671 path = luaL_checkstring(L, 1);
jbe@111 672 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 673 strcpy(sockaddr.sun_path, path);
jbe@111 674 sock = socket(
jbe@111 675 PF_LOCAL,
jbe@111 676 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 677 0
jbe@111 678 );
jbe@111 679 if (sock < 0) {
jbe@111 680 moonbr_io_errmsg();
jbe@111 681 lua_pushnil(L);
jbe@111 682 lua_pushstring(L, errmsg);
jbe@111 683 return 2;
jbe@111 684 }
jbe@111 685 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 686 if (!nonblocking && errno == EINTR) {
jbe@111 687 moonbr_io_errmsg();
jbe@111 688 close(sock);
jbe@111 689 lua_pushnil(L);
jbe@111 690 lua_pushstring(L, errmsg);
jbe@111 691 return 2;
jbe@111 692 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 693 moonbr_io_errmsg();
jbe@111 694 lua_pushnil(L);
jbe@111 695 lua_pushstring(L, errmsg);
jbe@111 696 return 2;
jbe@111 697 }
jbe@111 698 }
jbe@111 699 moonbr_io_pushhandle(L, sock);
jbe@111 700 return 1;
jbe@111 701 }
jbe@111 702
jbe@111 703 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 704 return moonbr_io_localconnect_impl(L, 0);
jbe@111 705 }
jbe@111 706
jbe@111 707 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 708 return moonbr_io_localconnect_impl(L, 1);
jbe@111 709 }
jbe@111 710
jbe@99 711 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 712 const char *host, *port;
jbe@98 713 struct addrinfo hints = { 0, };
jbe@98 714 struct addrinfo *res, *addrinfo;
jbe@98 715 int errcode;
jbe@98 716 int sock;
jbe@98 717 host = luaL_checkstring(L, 1);
jbe@98 718 port = luaL_checkstring(L, 2);
jbe@98 719 hints.ai_family = AF_UNSPEC;
jbe@98 720 hints.ai_socktype = SOCK_STREAM;
jbe@98 721 hints.ai_protocol = IPPROTO_TCP;
jbe@98 722 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 723 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 724 if (errcode) {
jbe@102 725 freeaddrinfo(res);
jbe@98 726 if (errcode == EAI_SYSTEM) {
jbe@98 727 moonbr_io_errmsg();
jbe@98 728 lua_pushnil(L);
jbe@98 729 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 730 } else {
jbe@98 731 lua_pushnil(L);
jbe@98 732 lua_pushstring(L, gai_strerror(errcode));
jbe@98 733 }
jbe@98 734 return 2;
jbe@98 735 }
jbe@98 736 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 737 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 738 }
jbe@98 739 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 740 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 741 }
jbe@98 742 addrinfo = res;
jbe@98 743 moonbr_io_tcpconnect_found:
jbe@99 744 sock = socket(
jbe@134 745 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 746 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 747 addrinfo->ai_protocol
jbe@99 748 );
jbe@98 749 if (sock < 0) {
jbe@98 750 moonbr_io_errmsg();
jbe@108 751 freeaddrinfo(res);
jbe@98 752 lua_pushnil(L);
jbe@98 753 lua_pushstring(L, errmsg);
jbe@108 754 return 2;
jbe@98 755 }
jbe@98 756 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 757 freeaddrinfo(res);
jbe@99 758 if (!nonblocking && errno == EINTR) {
jbe@99 759 moonbr_io_errmsg();
jbe@99 760 close(sock);
jbe@99 761 lua_pushnil(L);
jbe@99 762 lua_pushstring(L, errmsg);
jbe@99 763 return 2;
jbe@99 764 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 765 moonbr_io_errmsg();
jbe@99 766 lua_pushnil(L);
jbe@99 767 lua_pushstring(L, errmsg);
jbe@99 768 return 2;
jbe@99 769 }
jbe@108 770 } else {
jbe@108 771 freeaddrinfo(res);
jbe@98 772 }
jbe@107 773 moonbr_io_pushhandle(L, sock);
jbe@98 774 return 1;
jbe@98 775 }
jbe@98 776
jbe@99 777 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 778 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 779 }
jbe@99 780
jbe@99 781 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 782 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 783 }
jbe@99 784
jbe@112 785 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 786 moonbr_io_listener_t *listener;
jbe@112 787 const char *path;
jbe@118 788 struct stat sb;
jbe@112 789 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 790 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 791 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 792 ) - 1; /* one byte for termination */
jbe@112 793 int sock;
jbe@112 794 path = luaL_checkstring(L, 1);
jbe@112 795 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 796 strcpy(sockaddr.sun_path, path);
jbe@118 797 if (stat(path, &sb) == 0) {
jbe@118 798 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 799 }
jbe@112 800 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 801 listener->fd = -1;
jbe@112 802 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 803 sock = socket(
jbe@112 804 PF_LOCAL,
jbe@112 805 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 806 0
jbe@112 807 );
jbe@112 808 if (sock < 0) {
jbe@112 809 moonbr_io_errmsg();
jbe@112 810 lua_pushnil(L);
jbe@112 811 lua_pushstring(L, errmsg);
jbe@112 812 return 2;
jbe@112 813 }
jbe@112 814 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 815 moonbr_io_errmsg();
jbe@112 816 close(sock);
jbe@112 817 lua_pushnil(L);
jbe@112 818 lua_pushstring(L, errmsg);
jbe@112 819 return 2;
jbe@112 820 }
jbe@112 821 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 822 moonbr_io_errmsg();
jbe@112 823 close(sock);
jbe@112 824 lua_pushnil(L);
jbe@112 825 lua_pushstring(L, errmsg);
jbe@112 826 return 2;
jbe@112 827 }
jbe@112 828 listener->fd = sock;
jbe@118 829 listener->addrfam = AF_LOCAL;
jbe@112 830 listener->nonblocking = -1;
jbe@112 831 return 1;
jbe@112 832 }
jbe@112 833
jbe@108 834 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 835 moonbr_io_listener_t *listener;
jbe@108 836 const char *host, *port;
jbe@108 837 struct addrinfo hints = { 0, };
jbe@108 838 struct addrinfo *res, *addrinfo;
jbe@108 839 int errcode;
jbe@108 840 int sock;
jbe@108 841 host = luaL_optstring(L, 1, NULL);
jbe@108 842 port = luaL_checkstring(L, 2);
jbe@108 843 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 844 listener->fd = -1;
jbe@108 845 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 846 hints.ai_family = AF_UNSPEC;
jbe@108 847 hints.ai_socktype = SOCK_STREAM;
jbe@108 848 hints.ai_protocol = IPPROTO_TCP;
jbe@108 849 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 850 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 851 if (errcode) {
jbe@108 852 freeaddrinfo(res);
jbe@108 853 if (errcode == EAI_SYSTEM) {
jbe@108 854 moonbr_io_errmsg();
jbe@108 855 lua_pushnil(L);
jbe@108 856 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 857 } else {
jbe@108 858 lua_pushnil(L);
jbe@108 859 lua_pushstring(L, gai_strerror(errcode));
jbe@108 860 }
jbe@108 861 return 2;
jbe@108 862 }
jbe@108 863 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 864 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 865 }
jbe@108 866 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 867 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 868 }
jbe@108 869 addrinfo = res;
jbe@108 870 moonbr_io_tcpconnect_found:
jbe@118 871 listener->addrfam = addrinfo->ai_family;
jbe@108 872 sock = socket(
jbe@134 873 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 874 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 875 addrinfo->ai_protocol
jbe@108 876 );
jbe@108 877 if (sock < 0) {
jbe@108 878 moonbr_io_errmsg();
jbe@108 879 freeaddrinfo(res);
jbe@108 880 lua_pushnil(L);
jbe@108 881 lua_pushstring(L, errmsg);
jbe@108 882 return 2;
jbe@108 883 }
jbe@120 884 {
jbe@120 885 static const int reuseval = 1;
jbe@120 886 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 887 moonbr_io_errmsg();
jbe@120 888 freeaddrinfo(res);
jbe@120 889 close(sock);
jbe@120 890 lua_pushnil(L);
jbe@120 891 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 892 return 2;
jbe@120 893 }
jbe@120 894 }
jbe@108 895 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 896 moonbr_io_errmsg();
jbe@108 897 freeaddrinfo(res);
jbe@108 898 close(sock);
jbe@108 899 lua_pushnil(L);
jbe@108 900 lua_pushstring(L, errmsg);
jbe@108 901 return 2;
jbe@108 902 }
jbe@108 903 freeaddrinfo(res);
jbe@108 904 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 905 moonbr_io_errmsg();
jbe@108 906 close(sock);
jbe@108 907 lua_pushnil(L);
jbe@108 908 lua_pushstring(L, errmsg);
jbe@108 909 return 2;
jbe@108 910 }
jbe@108 911 listener->fd = sock;
jbe@108 912 listener->nonblocking = -1;
jbe@108 913 return 1;
jbe@108 914 }
jbe@108 915
jbe@108 916 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 917 moonbr_io_listener_t *listener;
jbe@108 918 int fd;
jbe@108 919 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 920 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 921 if (listener->nonblocking != nonblocking) {
jbe@108 922 int flags;
jbe@108 923 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 924 if (flags == -1) {
jbe@108 925 moonbr_io_errmsg();
jbe@108 926 close(listener->fd);
jbe@108 927 listener->fd = -1;
jbe@108 928 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 929 }
jbe@108 930 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 931 else flags &= ~O_NONBLOCK;
jbe@108 932 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 933 moonbr_io_errmsg();
jbe@108 934 close(listener->fd);
jbe@108 935 listener->fd = -1;
jbe@108 936 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 937 }
jbe@108 938 listener->nonblocking = nonblocking;
jbe@108 939 }
jbe@108 940 while (1) {
jbe@108 941 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 942 if (fd < 0) {
jbe@108 943 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 944 lua_pushboolean(L, 0);
jbe@108 945 lua_pushliteral(L, "No incoming connection pending");
jbe@108 946 return 2;
jbe@108 947 } else if (errno != EINTR) {
jbe@108 948 moonbr_io_errmsg();
jbe@108 949 lua_pushnil(L);
jbe@108 950 lua_pushstring(L, errmsg);
jbe@108 951 return 2;
jbe@108 952 }
jbe@108 953 } else {
jbe@108 954 moonbr_io_pushhandle(L, fd);
jbe@108 955 return 1;
jbe@108 956 }
jbe@108 957 }
jbe@108 958 }
jbe@108 959
jbe@108 960 static int moonbr_io_accept(lua_State *L) {
jbe@108 961 return moonbr_io_accept_impl(L, 0);
jbe@108 962 }
jbe@108 963
jbe@108 964 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 965 return moonbr_io_accept_impl(L, 1);
jbe@108 966 }
jbe@108 967
jbe@108 968 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 969 moonbr_io_listener_t *listener;
jbe@118 970 struct sockaddr_un addr;
jbe@118 971 socklen_t addrlen;
jbe@118 972 struct stat sb;
jbe@108 973 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 974 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 975 addrlen = sizeof(addr);
jbe@118 976 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 977 if (close(listener->fd)) {
jbe@108 978 moonbr_io_errmsg();
jbe@108 979 listener->fd = -1;
jbe@118 980 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 981 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 982 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 983 }
jbe@118 984 }
jbe@108 985 lua_pushnil(L);
jbe@108 986 lua_pushstring(L, errmsg);
jbe@108 987 return 2;
jbe@108 988 }
jbe@108 989 listener->fd = -1;
jbe@118 990 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 991 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 992 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 993 }
jbe@118 994 }
jbe@108 995 lua_pushboolean(L, 1);
jbe@108 996 return 1;
jbe@108 997 }
jbe@108 998
jbe@108 999 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1000 moonbr_io_listener_t *listener;
jbe@108 1001 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1002 if (listener->fd >= 0) close(listener->fd);
jbe@108 1003 listener->fd = -1;
jbe@108 1004 return 0;
jbe@108 1005 }
jbe@108 1006
jbe@106 1007 static int moonbr_io_poll(lua_State *L) {
jbe@106 1008 moonbr_io_handle_t *handle;
jbe@108 1009 moonbr_io_listener_t *listener;
jbe@106 1010 int fd, isnum;
jbe@106 1011 int nfds = 0;
jbe@106 1012 fd_set readfds, writefds, exceptfds;
jbe@106 1013 struct timeval timeout = {0, };
jbe@106 1014 int status;
jbe@106 1015 FD_ZERO(&readfds);
jbe@106 1016 FD_ZERO(&writefds);
jbe@106 1017 FD_ZERO(&exceptfds);
jbe@106 1018 if (!lua_isnoneornil(L, 1)) {
jbe@106 1019 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1020 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1021 if (lua_toboolean(L, -1)) {
jbe@106 1022 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1023 if (handle) {
jbe@109 1024 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1025 fd = handle->fd;
jbe@122 1026 if (
jbe@122 1027 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1028 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1029 ) {
jbe@109 1030 lua_pushboolean(L, 1);
jbe@109 1031 return 1;
jbe@109 1032 }
jbe@106 1033 } else {
jbe@108 1034 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1035 if (listener) {
jbe@108 1036 fd = listener->fd;
jbe@108 1037 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1038 } else {
jbe@108 1039 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1040 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1041 }
jbe@106 1042 }
jbe@106 1043 FD_SET(fd, &readfds);
jbe@106 1044 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1045 }
jbe@106 1046 }
jbe@106 1047 }
jbe@106 1048 if (!lua_isnoneornil(L, 2)) {
jbe@106 1049 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1050 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1051 if (lua_toboolean(L, -1)) {
jbe@106 1052 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1053 if (handle) {
jbe@109 1054 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1055 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1056 fd = handle->fd;
jbe@106 1057 } else {
jbe@108 1058 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1059 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1060 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1061 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1062 }
jbe@106 1063 FD_SET(fd, &writefds);
jbe@106 1064 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1065 }
jbe@106 1066 }
jbe@106 1067 }
jbe@106 1068 if (!lua_isnoneornil(L, 3)) {
jbe@106 1069 lua_Number n;
jbe@106 1070 n = lua_tonumberx(L, 3, &isnum);
jbe@106 1071 if (isnum && n>=0 && n<100000000) {
jbe@106 1072 timeout.tv_sec = n;
jbe@106 1073 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1074 } else {
jbe@106 1075 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1076 }
jbe@106 1077 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1078 } else {
jbe@106 1079 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1080 }
jbe@106 1081 if (status == -1) {
jbe@106 1082 if (errno == EINTR) {
jbe@106 1083 lua_pushboolean(L, 0);
jbe@106 1084 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1085 return 2;
jbe@106 1086 } else {
jbe@106 1087 moonbr_io_errmsg();
jbe@106 1088 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1089 }
jbe@106 1090 } else if (status == 0) {
jbe@106 1091 lua_pushboolean(L, 0);
jbe@106 1092 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1093 return 2;
jbe@106 1094 } else {
jbe@106 1095 lua_pushboolean(L, 1);
jbe@106 1096 return 1;
jbe@106 1097 }
jbe@106 1098 }
jbe@106 1099
jbe@115 1100 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1101 lua_Number sub;
jbe@115 1102 struct timespec tp;
jbe@115 1103 sub = luaL_optnumber(L, 1, 0);
jbe@115 1104 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1105 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1106 }
jbe@115 1107 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1108 return 1;
jbe@115 1109 }
jbe@115 1110
jbe@79 1111 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1112 {"read", moonbr_io_read},
jbe@85 1113 {"read_nb", moonbr_io_read_nb},
jbe@86 1114 {"drain", moonbr_io_drain},
jbe@86 1115 {"drain_nb", moonbr_io_drain_nb},
jbe@80 1116 {"write", moonbr_io_write},
jbe@81 1117 {"write_nb", moonbr_io_write_nb},
jbe@80 1118 {"flush", moonbr_io_flush},
jbe@81 1119 {"flush_nb", moonbr_io_flush_nb},
jbe@88 1120 {"finish", moonbr_io_finish},
jbe@87 1121 {"close", moonbr_io_close},
jbe@85 1122 {"reset", moonbr_io_reset},
jbe@79 1123 {NULL, NULL}
jbe@79 1124 };
jbe@79 1125
jbe@79 1126 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1127 {"__index", moonbr_io_handleindex},
jbe@79 1128 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1129 {"__gc", moonbr_io_handlegc},
jbe@108 1130 {NULL, NULL}
jbe@108 1131 };
jbe@108 1132
jbe@108 1133 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1134 {"accept", moonbr_io_accept},
jbe@108 1135 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1136 {"close", moonbr_io_unlisten},
jbe@108 1137 {NULL, NULL}
jbe@108 1138 };
jbe@108 1139
jbe@108 1140 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1141 {"__gc", moonbr_io_listenergc},
jbe@79 1142 {NULL, NULL}
jbe@79 1143 };
jbe@79 1144
jbe@79 1145 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1146 {"localconnect", moonbr_io_localconnect},
jbe@111 1147 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1148 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1149 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1150 {"locallisten", moonbr_io_locallisten},
jbe@108 1151 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1152 {"poll", moonbr_io_poll},
jbe@115 1153 {"timeref", moonbr_io_timeref},
jbe@79 1154 {NULL, NULL}
jbe@79 1155 };
jbe@79 1156
jbe@79 1157 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1158
jbe@113 1159 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1160
jbe@80 1161 lua_newtable(L); // module
jbe@80 1162
jbe@79 1163 lua_newtable(L); // public metatable
jbe@79 1164 lua_newtable(L); // handle methods
jbe@79 1165 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1166 lua_pushvalue(L, -1);
jbe@108 1167 lua_setfield(L, -4, "prototype_handle");
jbe@79 1168 lua_setfield(L, -2, "__index");
jbe@79 1169 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1170
jbe@79 1171 lua_newtable(L); // handle metatable
jbe@79 1172 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 1173 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1174
jbe@108 1175 lua_newtable(L); // listener metatable
jbe@108 1176 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1177 lua_newtable(L); // listener methods
jbe@108 1178 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1179 lua_pushvalue(L, -1);
jbe@108 1180 lua_setfield(L, -4, "prototype_listener");
jbe@108 1181 lua_setfield(L, -2, "__index");
jbe@108 1182 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1183
jbe@79 1184 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1185 return 1;
jbe@79 1186
jbe@79 1187 }
jbe@79 1188

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