moonbridge

annotate moonbridge_io.c @ 118:118e320a7812

find changesets by author, revision, files, or words in the commit message
Delete local socket in filesystem before and after listening
author jbe
date Fri Apr 10 13:08:34 2015 +0200 (2015-04-10)
parents d8469c1039e6
children 74ec80b721b9
rev   line source
jbe@79 1
jbe@79 2 #include <stdlib.h>
jbe@79 3 #include <unistd.h>
jbe@79 4 #include <stdint.h>
jbe@79 5 #include <errno.h>
jbe@79 6 #include <string.h>
jbe@79 7 #include <sys/socket.h>
jbe@111 8 #include <sys/un.h>
jbe@79 9 #include <sys/select.h>
jbe@81 10 #include <fcntl.h>
jbe@95 11 #include <netinet/in.h>
jbe@95 12 #include <netinet/tcp.h>
jbe@107 13 #include <arpa/inet.h>
jbe@98 14 #include <sys/types.h>
jbe@118 15 #include <sys/stat.h>
jbe@98 16 #include <netdb.h>
jbe@113 17 #include <signal.h>
jbe@115 18 #include <time.h>
jbe@79 19
jbe@79 20 #include <lua.h>
jbe@79 21 #include <lauxlib.h>
jbe@79 22 #include <lualib.h>
jbe@79 23
jbe@80 24 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 25 #define MOONBR_IO_READBUFLEN 4096
jbe@80 26 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 27
jbe@108 28 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 29
jbe@80 30 #define moonbr_io_errmsg() \
jbe@80 31 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 32 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 33
jbe@79 34 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 35 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 36 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 37
jbe@79 38 typedef struct {
jbe@79 39 int fd;
jbe@107 40 int issock;
jbe@107 41 sa_family_t addrfam;
jbe@94 42 int finished;
jbe@94 43 int closed;
jbe@81 44 int nonblocking;
jbe@95 45 int nopush;
jbe@85 46 int readerr;
jbe@105 47 int readbufin;
jbe@105 48 int readbufout;
jbe@81 49 int writeerr;
jbe@83 50 size_t writeleft;
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@95 110 static 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@83 290 while (handle->writeqout != handle->writeqin) {
jbe@83 291 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 292 str = lua_tolstring(L, -1, &strlen);
jbe@92 293 while (handle->writeqoff < strlen) {
jbe@103 294 if (
jbe@103 295 strlen - handle->writeqoff <=
jbe@103 296 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 297 ) {
jbe@103 298 memcpy(
jbe@103 299 handle->writebuf + handle->writebufin,
jbe@103 300 str + handle->writeqoff,
jbe@103 301 strlen - handle->writeqoff
jbe@103 302 );
jbe@103 303 handle->writebufin += strlen - handle->writeqoff;
jbe@80 304 break;
jbe@80 305 } else {
jbe@97 306 moonbr_io_handle_set_nopush(L, handle, 1);
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@103 314 written = write(
jbe@103 315 handle->fd,
jbe@103 316 handle->writebuf + handle->writebufout,
jbe@103 317 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 318 );
jbe@103 319 if (written < 0) {
jbe@81 320 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 321 goto moonbr_io_write_impl_block;
jbe@81 322 } else if (errno != EINTR) {
jbe@80 323 moonbr_io_errmsg();
jbe@80 324 lua_pushnil(L);
jbe@80 325 lua_pushstring(L, errmsg);
jbe@80 326 return 2;
jbe@80 327 }
jbe@103 328 } else {
jbe@103 329 handle->writebufout += written;
jbe@103 330 handle->writeleft -= written;
jbe@80 331 }
jbe@80 332 }
jbe@103 333 handle->writebufin = 0;
jbe@103 334 handle->writebufout = 0;
jbe@80 335 }
jbe@80 336 }
jbe@81 337 handle->writeqoff = 0;
jbe@81 338 lua_pop(L, 1);
jbe@81 339 lua_pushnil(L);
jbe@83 340 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 341 }
jbe@81 342 if (flush) {
jbe@97 343 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@103 344 while (handle->writebufout < handle->writebufin) {
jbe@103 345 written = write(
jbe@103 346 handle->fd,
jbe@103 347 handle->writebuf + handle->writebufout,
jbe@103 348 handle->writebufin - handle->writebufout
jbe@103 349 );
jbe@103 350 if (written < 0) {
jbe@81 351 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 352 goto moonbr_io_write_impl_block;
jbe@81 353 } else if (errno != EINTR) {
jbe@81 354 moonbr_io_errmsg();
jbe@81 355 lua_pushnil(L);
jbe@81 356 lua_pushstring(L, errmsg);
jbe@81 357 return 2;
jbe@81 358 }
jbe@81 359 } else {
jbe@103 360 handle->writebufout += written;
jbe@103 361 handle->writeleft -= written;
jbe@81 362 }
jbe@81 363 }
jbe@103 364 handle->writebufin = 0;
jbe@103 365 handle->writebufout = 0;
jbe@81 366 }
jbe@103 367 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 368 else lua_pushvalue(L, 1);
jbe@103 369 handle->writeerr = 0;
jbe@80 370 return 1;
jbe@81 371 moonbr_io_write_impl_block:
jbe@91 372 lua_pushinteger(L, handle->writeleft);
jbe@103 373 handle->writeerr = 0;
jbe@81 374 return 1;
jbe@81 375 }
jbe@81 376
jbe@81 377 static int moonbr_io_write(lua_State *L) {
jbe@81 378 return moonbr_io_write_impl(L, 0, 0);
jbe@81 379 }
jbe@81 380
jbe@81 381 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 382 return moonbr_io_write_impl(L, 1, 0);
jbe@80 383 }
jbe@80 384
jbe@80 385 static int moonbr_io_flush(lua_State *L) {
jbe@81 386 return moonbr_io_write_impl(L, 0, 1);
jbe@81 387 }
jbe@81 388
jbe@81 389 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 390 return moonbr_io_write_impl(L, 1, 1);
jbe@80 391 }
jbe@80 392
jbe@88 393 static int moonbr_io_finish(lua_State *L) {
jbe@88 394 moonbr_io_handle_t *handle;
jbe@88 395 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 396 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 397 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 398 if (handle->writeleft) {
jbe@94 399 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 400 lua_pushvalue(L, 1);
jbe@116 401 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 402 handle->finished = 1;
jbe@116 403 lua_error(L);
jbe@116 404 }
jbe@94 405 if (!lua_toboolean(L, -2)) {
jbe@94 406 handle->finished = 1;
jbe@94 407 return 2;
jbe@88 408 }
jbe@94 409 }
jbe@94 410 handle->finished = 1;
jbe@107 411 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 412 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 413 moonbr_io_errmsg();
jbe@88 414 lua_pushnil(L);
jbe@88 415 lua_pushstring(L, errmsg);
jbe@88 416 return 2;
jbe@88 417 }
jbe@94 418 } else {
jbe@94 419 if (close(handle->fd)) {
jbe@94 420 moonbr_io_errmsg();
jbe@94 421 handle->fd = -1;
jbe@94 422 lua_pushnil(L);
jbe@94 423 lua_pushstring(L, errmsg);
jbe@94 424 return 2;
jbe@94 425 }
jbe@94 426 handle->fd = -1; /* fake EOF on read */
jbe@88 427 }
jbe@88 428 lua_pushboolean(L, 1);
jbe@88 429 return 1;
jbe@88 430 }
jbe@88 431
jbe@94 432 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 433 moonbr_io_handle_t *handle;
jbe@83 434 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 435 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@116 436 handle->closed = 1;
jbe@94 437 if (!reset) {
jbe@87 438 if (handle->writeleft) {
jbe@87 439 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 440 lua_pushvalue(L, 1);
jbe@116 441 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 442 close(handle->fd);
jbe@116 443 handle->fd = -1;
jbe@116 444 lua_error(L);
jbe@116 445 }
jbe@87 446 if (!lua_toboolean(L, -2)) {
jbe@87 447 close(handle->fd);
jbe@87 448 handle->fd = -1;
jbe@87 449 return 2;
jbe@87 450 }
jbe@83 451 }
jbe@94 452 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 453 }
jbe@94 454 if (handle->fd >= 0) {
jbe@94 455 if (close(handle->fd)) {
jbe@94 456 moonbr_io_errmsg();
jbe@94 457 handle->fd = -1;
jbe@94 458 lua_pushnil(L);
jbe@94 459 lua_pushstring(L, errmsg);
jbe@94 460 return 2;
jbe@94 461 }
jbe@104 462 handle->fd = -1;
jbe@83 463 }
jbe@83 464 lua_pushboolean(L, 1);
jbe@83 465 return 1;
jbe@84 466
jbe@83 467 }
jbe@83 468
jbe@94 469 static int moonbr_io_close(lua_State *L) {
jbe@94 470 return moonbr_io_close_impl(L, 0);
jbe@94 471 }
jbe@94 472
jbe@84 473 static int moonbr_io_reset(lua_State *L) {
jbe@94 474 return moonbr_io_close_impl(L, 1);
jbe@84 475 }
jbe@84 476
jbe@108 477 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 478 moonbr_io_handle_t *handle;
jbe@88 479 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 480 if (handle->fd >= 0) {
jbe@88 481 lua_pushcfunction(L, moonbr_io_close);
jbe@88 482 lua_pushvalue(L, 1);
jbe@88 483 lua_pushinteger(L, 0);
jbe@88 484 lua_call(L, 2, 0);
jbe@88 485 }
jbe@88 486 return 0;
jbe@88 487 }
jbe@88 488
jbe@100 489 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 490 moonbr_io_handle_t *handle;
jbe@88 491 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 492 if (!handle->closed) {
jbe@100 493 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 494 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 495 lua_call(L, 1, 0);
jbe@88 496 }
jbe@88 497 }
jbe@88 498
jbe@107 499 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 500 moonbr_io_handle_t *handle;
jbe@107 501 struct sockaddr addr;
jbe@107 502 socklen_t addrlen;
jbe@79 503 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 504 handle->fd = fd;
jbe@107 505 addrlen = sizeof(addr);
jbe@107 506 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 507 if (errno != ENOTSOCK) {
jbe@107 508 moonbr_io_errmsg();
jbe@107 509 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 510 }
jbe@107 511 handle->issock = 0;
jbe@107 512 } else {
jbe@107 513 handle->issock = 1;
jbe@107 514 handle->addrfam = addr.sa_family;
jbe@107 515 }
jbe@94 516 handle->finished = 0;
jbe@94 517 handle->closed = 0;
jbe@81 518 handle->nonblocking = -1;
jbe@95 519 handle->nopush = -1;
jbe@85 520 handle->readerr = 0;
jbe@105 521 handle->readbufin = 0;
jbe@105 522 handle->readbufout = 0;
jbe@81 523 handle->writeerr = 0;
jbe@81 524 handle->writeleft = 0;
jbe@83 525 handle->writeqin = 0;
jbe@83 526 handle->writeqout = 0;
jbe@81 527 handle->writeqoff = 0;
jbe@103 528 handle->writebufin = 0;
jbe@103 529 handle->writebufout = 0;
jbe@87 530 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 531 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 532 lua_setmetatable(L, -2);
jbe@79 533 lua_newtable(L); // uservalue
jbe@81 534 lua_newtable(L);
jbe@103 535 lua_setfield(L, -2, "writequeue");
jbe@79 536 lua_newtable(L); // public
jbe@107 537 if (handle->addrfam == AF_INET6) {
jbe@107 538 struct sockaddr_in6 addr_in6;
jbe@107 539 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 540 const char *addrstr;
jbe@107 541 addrlen = sizeof(addr_in6);
jbe@107 542 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 543 moonbr_io_errmsg();
jbe@107 544 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 545 }
jbe@107 546 if (addrlen > sizeof(addr_in6)) {
jbe@107 547 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 548 }
jbe@107 549 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 550 if (!addrstr) {
jbe@107 551 moonbr_io_errmsg();
jbe@107 552 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 553 } else {
jbe@107 554 lua_pushstring(L, addrstr);
jbe@107 555 lua_setfield(L, -2, "local_ip6");
jbe@107 556 }
jbe@107 557 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 558 lua_setfield(L, -2, "local_tcpport");
jbe@107 559 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 560 moonbr_io_errmsg();
jbe@107 561 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 562 }
jbe@107 563 if (addrlen > sizeof(addr_in6)) {
jbe@107 564 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 565 }
jbe@107 566 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 567 if (!addrstr) {
jbe@107 568 moonbr_io_errmsg();
jbe@107 569 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 570 } else {
jbe@107 571 lua_pushstring(L, addrstr);
jbe@107 572 lua_setfield(L, -2, "remote_ip6");
jbe@107 573 }
jbe@107 574 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 575 lua_setfield(L, -2, "remote_tcpport");
jbe@107 576 } else if (handle->addrfam == AF_INET) {
jbe@107 577 struct sockaddr_in addr_in;
jbe@107 578 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 579 const char *addrstr;
jbe@107 580 addrlen = sizeof(addr_in);
jbe@107 581 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 582 moonbr_io_errmsg();
jbe@107 583 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 584 }
jbe@107 585 if (addrlen > sizeof(addr_in)) {
jbe@107 586 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 587 }
jbe@107 588 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 589 if (!addrstr) {
jbe@107 590 moonbr_io_errmsg();
jbe@107 591 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 592 } else {
jbe@107 593 lua_pushstring(L, addrstr);
jbe@107 594 lua_setfield(L, -2, "local_ip4");
jbe@107 595 }
jbe@107 596 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 597 lua_setfield(L, -2, "local_tcpport");
jbe@107 598 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 599 moonbr_io_errmsg();
jbe@107 600 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 601 }
jbe@107 602 if (addrlen > sizeof(addr_in)) {
jbe@107 603 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 604 }
jbe@107 605 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 606 if (!addrstr) {
jbe@107 607 moonbr_io_errmsg();
jbe@107 608 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 609 } else {
jbe@107 610 lua_pushstring(L, addrstr);
jbe@107 611 lua_setfield(L, -2, "remote_ip4");
jbe@107 612 }
jbe@107 613 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 614 lua_setfield(L, -2, "remote_tcpport");
jbe@107 615 }
jbe@79 616 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 617 lua_setmetatable(L, -2);
jbe@79 618 lua_setfield(L, -2, "public");
jbe@79 619 lua_setuservalue(L, -2);
jbe@79 620 }
jbe@79 621
jbe@79 622 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 623 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 624 lua_getuservalue(L, 1);
jbe@79 625 lua_getfield(L, -1, "public");
jbe@79 626 lua_pushvalue(L, 2);
jbe@79 627 lua_gettable(L, -2);
jbe@79 628 return 1;
jbe@79 629 }
jbe@79 630
jbe@79 631 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 632 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 633 lua_getuservalue(L, 1);
jbe@79 634 lua_getfield(L, -1, "public");
jbe@79 635 lua_pushvalue(L, 2);
jbe@79 636 lua_pushvalue(L, 3);
jbe@79 637 lua_settable(L, -3);
jbe@79 638 return 0;
jbe@79 639 }
jbe@79 640
jbe@111 641 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 642 const char *path;
jbe@111 643 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 644 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 645 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 646 ) - 1; /* one byte for termination */
jbe@111 647 int sock;
jbe@111 648 path = luaL_checkstring(L, 1);
jbe@111 649 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 650 strcpy(sockaddr.sun_path, path);
jbe@111 651 sock = socket(
jbe@111 652 PF_LOCAL,
jbe@111 653 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 654 0
jbe@111 655 );
jbe@111 656 if (sock < 0) {
jbe@111 657 moonbr_io_errmsg();
jbe@111 658 lua_pushnil(L);
jbe@111 659 lua_pushstring(L, errmsg);
jbe@111 660 return 2;
jbe@111 661 }
jbe@111 662 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 663 if (!nonblocking && errno == EINTR) {
jbe@111 664 moonbr_io_errmsg();
jbe@111 665 close(sock);
jbe@111 666 lua_pushnil(L);
jbe@111 667 lua_pushstring(L, errmsg);
jbe@111 668 return 2;
jbe@111 669 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 670 moonbr_io_errmsg();
jbe@111 671 lua_pushnil(L);
jbe@111 672 lua_pushstring(L, errmsg);
jbe@111 673 return 2;
jbe@111 674 }
jbe@111 675 }
jbe@111 676 moonbr_io_pushhandle(L, sock);
jbe@111 677 return 1;
jbe@111 678 }
jbe@111 679
jbe@111 680 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 681 return moonbr_io_localconnect_impl(L, 0);
jbe@111 682 }
jbe@111 683
jbe@111 684 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 685 return moonbr_io_localconnect_impl(L, 1);
jbe@111 686 }
jbe@111 687
jbe@99 688 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 689 const char *host, *port;
jbe@98 690 struct addrinfo hints = { 0, };
jbe@98 691 struct addrinfo *res, *addrinfo;
jbe@98 692 int errcode;
jbe@98 693 int sock;
jbe@98 694 host = luaL_checkstring(L, 1);
jbe@98 695 port = luaL_checkstring(L, 2);
jbe@98 696 hints.ai_family = AF_UNSPEC;
jbe@98 697 hints.ai_socktype = SOCK_STREAM;
jbe@98 698 hints.ai_protocol = IPPROTO_TCP;
jbe@98 699 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 700 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 701 if (errcode) {
jbe@102 702 freeaddrinfo(res);
jbe@98 703 if (errcode == EAI_SYSTEM) {
jbe@98 704 moonbr_io_errmsg();
jbe@98 705 lua_pushnil(L);
jbe@98 706 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 707 } else {
jbe@98 708 lua_pushnil(L);
jbe@98 709 lua_pushstring(L, gai_strerror(errcode));
jbe@98 710 }
jbe@98 711 return 2;
jbe@98 712 }
jbe@98 713 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@98 714 if (addrinfo->ai_family == PF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 715 }
jbe@98 716 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@98 717 if (addrinfo->ai_family == PF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 718 }
jbe@98 719 addrinfo = res;
jbe@98 720 moonbr_io_tcpconnect_found:
jbe@99 721 sock = socket(
jbe@99 722 addrinfo->ai_family,
jbe@99 723 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 724 addrinfo->ai_protocol
jbe@99 725 );
jbe@98 726 if (sock < 0) {
jbe@98 727 moonbr_io_errmsg();
jbe@108 728 freeaddrinfo(res);
jbe@98 729 lua_pushnil(L);
jbe@98 730 lua_pushstring(L, errmsg);
jbe@108 731 return 2;
jbe@98 732 }
jbe@98 733 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 734 freeaddrinfo(res);
jbe@99 735 if (!nonblocking && errno == EINTR) {
jbe@99 736 moonbr_io_errmsg();
jbe@99 737 close(sock);
jbe@99 738 lua_pushnil(L);
jbe@99 739 lua_pushstring(L, errmsg);
jbe@99 740 return 2;
jbe@99 741 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 742 moonbr_io_errmsg();
jbe@99 743 lua_pushnil(L);
jbe@99 744 lua_pushstring(L, errmsg);
jbe@99 745 return 2;
jbe@99 746 }
jbe@108 747 } else {
jbe@108 748 freeaddrinfo(res);
jbe@98 749 }
jbe@107 750 moonbr_io_pushhandle(L, sock);
jbe@98 751 return 1;
jbe@98 752 }
jbe@98 753
jbe@99 754 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 755 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 756 }
jbe@99 757
jbe@99 758 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 759 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 760 }
jbe@99 761
jbe@112 762 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 763 moonbr_io_listener_t *listener;
jbe@112 764 const char *path;
jbe@118 765 struct stat sb;
jbe@112 766 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 767 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 768 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 769 ) - 1; /* one byte for termination */
jbe@112 770 int sock;
jbe@112 771 path = luaL_checkstring(L, 1);
jbe@112 772 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 773 strcpy(sockaddr.sun_path, path);
jbe@118 774 if (stat(path, &sb) == 0) {
jbe@118 775 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 776 }
jbe@112 777 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 778 listener->fd = -1;
jbe@112 779 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 780 sock = socket(
jbe@112 781 PF_LOCAL,
jbe@112 782 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 783 0
jbe@112 784 );
jbe@112 785 if (sock < 0) {
jbe@112 786 moonbr_io_errmsg();
jbe@112 787 lua_pushnil(L);
jbe@112 788 lua_pushstring(L, errmsg);
jbe@112 789 return 2;
jbe@112 790 }
jbe@112 791 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 792 moonbr_io_errmsg();
jbe@112 793 close(sock);
jbe@112 794 lua_pushnil(L);
jbe@112 795 lua_pushstring(L, errmsg);
jbe@112 796 return 2;
jbe@112 797 }
jbe@112 798 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 799 moonbr_io_errmsg();
jbe@112 800 close(sock);
jbe@112 801 lua_pushnil(L);
jbe@112 802 lua_pushstring(L, errmsg);
jbe@112 803 return 2;
jbe@112 804 }
jbe@112 805 listener->fd = sock;
jbe@118 806 listener->addrfam = AF_LOCAL;
jbe@112 807 listener->nonblocking = -1;
jbe@112 808 return 1;
jbe@112 809 }
jbe@112 810
jbe@108 811 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 812 moonbr_io_listener_t *listener;
jbe@108 813 const char *host, *port;
jbe@108 814 struct addrinfo hints = { 0, };
jbe@108 815 struct addrinfo *res, *addrinfo;
jbe@108 816 int errcode;
jbe@108 817 int sock;
jbe@108 818 host = luaL_optstring(L, 1, NULL);
jbe@108 819 port = luaL_checkstring(L, 2);
jbe@108 820 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 821 listener->fd = -1;
jbe@108 822 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 823 hints.ai_family = AF_UNSPEC;
jbe@108 824 hints.ai_socktype = SOCK_STREAM;
jbe@108 825 hints.ai_protocol = IPPROTO_TCP;
jbe@108 826 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 827 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 828 if (errcode) {
jbe@108 829 freeaddrinfo(res);
jbe@108 830 if (errcode == EAI_SYSTEM) {
jbe@108 831 moonbr_io_errmsg();
jbe@108 832 lua_pushnil(L);
jbe@108 833 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 834 } else {
jbe@108 835 lua_pushnil(L);
jbe@108 836 lua_pushstring(L, gai_strerror(errcode));
jbe@108 837 }
jbe@108 838 return 2;
jbe@108 839 }
jbe@108 840 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@108 841 if (addrinfo->ai_family == PF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 842 }
jbe@108 843 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@108 844 if (addrinfo->ai_family == PF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 845 }
jbe@108 846 addrinfo = res;
jbe@108 847 moonbr_io_tcpconnect_found:
jbe@118 848 listener->addrfam = addrinfo->ai_family;
jbe@108 849 sock = socket(
jbe@108 850 addrinfo->ai_family,
jbe@108 851 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 852 addrinfo->ai_protocol
jbe@108 853 );
jbe@108 854 if (sock < 0) {
jbe@108 855 moonbr_io_errmsg();
jbe@108 856 freeaddrinfo(res);
jbe@108 857 lua_pushnil(L);
jbe@108 858 lua_pushstring(L, errmsg);
jbe@108 859 return 2;
jbe@108 860 }
jbe@108 861 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 862 moonbr_io_errmsg();
jbe@108 863 freeaddrinfo(res);
jbe@108 864 close(sock);
jbe@108 865 lua_pushnil(L);
jbe@108 866 lua_pushstring(L, errmsg);
jbe@108 867 return 2;
jbe@108 868 }
jbe@108 869 freeaddrinfo(res);
jbe@108 870 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 871 moonbr_io_errmsg();
jbe@108 872 close(sock);
jbe@108 873 lua_pushnil(L);
jbe@108 874 lua_pushstring(L, errmsg);
jbe@108 875 return 2;
jbe@108 876 }
jbe@108 877 listener->fd = sock;
jbe@108 878 listener->nonblocking = -1;
jbe@108 879 return 1;
jbe@108 880 }
jbe@108 881
jbe@108 882 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 883 moonbr_io_listener_t *listener;
jbe@108 884 int fd;
jbe@108 885 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 886 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 887 if (listener->nonblocking != nonblocking) {
jbe@108 888 int flags;
jbe@108 889 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 890 if (flags == -1) {
jbe@108 891 moonbr_io_errmsg();
jbe@108 892 close(listener->fd);
jbe@108 893 listener->fd = -1;
jbe@108 894 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 895 }
jbe@108 896 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 897 else flags &= ~O_NONBLOCK;
jbe@108 898 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 899 moonbr_io_errmsg();
jbe@108 900 close(listener->fd);
jbe@108 901 listener->fd = -1;
jbe@108 902 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 903 }
jbe@108 904 listener->nonblocking = nonblocking;
jbe@108 905 }
jbe@108 906 while (1) {
jbe@108 907 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 908 if (fd < 0) {
jbe@108 909 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 910 lua_pushboolean(L, 0);
jbe@108 911 lua_pushliteral(L, "No incoming connection pending");
jbe@108 912 return 2;
jbe@108 913 } else if (errno != EINTR) {
jbe@108 914 moonbr_io_errmsg();
jbe@108 915 lua_pushnil(L);
jbe@108 916 lua_pushstring(L, errmsg);
jbe@108 917 return 2;
jbe@108 918 }
jbe@108 919 } else {
jbe@108 920 moonbr_io_pushhandle(L, fd);
jbe@108 921 return 1;
jbe@108 922 }
jbe@108 923 }
jbe@108 924 }
jbe@108 925
jbe@108 926 static int moonbr_io_accept(lua_State *L) {
jbe@108 927 return moonbr_io_accept_impl(L, 0);
jbe@108 928 }
jbe@108 929
jbe@108 930 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 931 return moonbr_io_accept_impl(L, 1);
jbe@108 932 }
jbe@108 933
jbe@108 934 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 935 moonbr_io_listener_t *listener;
jbe@118 936 struct sockaddr_un addr;
jbe@118 937 socklen_t addrlen;
jbe@118 938 struct stat sb;
jbe@108 939 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 940 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 941 addrlen = sizeof(addr);
jbe@118 942 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 943 if (close(listener->fd)) {
jbe@108 944 moonbr_io_errmsg();
jbe@108 945 listener->fd = -1;
jbe@118 946 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 947 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 948 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 949 }
jbe@118 950 }
jbe@108 951 lua_pushnil(L);
jbe@108 952 lua_pushstring(L, errmsg);
jbe@108 953 return 2;
jbe@108 954 }
jbe@108 955 listener->fd = -1;
jbe@118 956 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 957 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 958 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 959 }
jbe@118 960 }
jbe@108 961 lua_pushboolean(L, 1);
jbe@108 962 return 1;
jbe@108 963 }
jbe@108 964
jbe@108 965 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 966 moonbr_io_listener_t *listener;
jbe@108 967 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 968 if (listener->fd >= 0) close(listener->fd);
jbe@108 969 listener->fd = -1;
jbe@108 970 return 0;
jbe@108 971 }
jbe@108 972
jbe@106 973 static int moonbr_io_poll(lua_State *L) {
jbe@106 974 moonbr_io_handle_t *handle;
jbe@108 975 moonbr_io_listener_t *listener;
jbe@106 976 int fd, isnum;
jbe@106 977 int nfds = 0;
jbe@106 978 fd_set readfds, writefds, exceptfds;
jbe@106 979 struct timeval timeout = {0, };
jbe@106 980 int status;
jbe@106 981 FD_ZERO(&readfds);
jbe@106 982 FD_ZERO(&writefds);
jbe@106 983 FD_ZERO(&exceptfds);
jbe@106 984 if (!lua_isnoneornil(L, 1)) {
jbe@106 985 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 986 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 987 if (lua_toboolean(L, -1)) {
jbe@106 988 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 989 if (handle) {
jbe@109 990 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 991 fd = handle->fd;
jbe@109 992 if (fd < 0) { /* fake EOF to simulate shutdown */
jbe@109 993 lua_pushboolean(L, 1);
jbe@109 994 return 1;
jbe@109 995 }
jbe@106 996 } else {
jbe@108 997 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 998 if (listener) {
jbe@108 999 fd = listener->fd;
jbe@108 1000 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1001 } else {
jbe@108 1002 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1003 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1004 }
jbe@106 1005 }
jbe@106 1006 FD_SET(fd, &readfds);
jbe@106 1007 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1008 }
jbe@106 1009 }
jbe@106 1010 }
jbe@106 1011 if (!lua_isnoneornil(L, 2)) {
jbe@106 1012 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1013 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1014 if (lua_toboolean(L, -1)) {
jbe@106 1015 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1016 if (handle) {
jbe@109 1017 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1018 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1019 fd = handle->fd;
jbe@106 1020 } else {
jbe@108 1021 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1022 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1023 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1024 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1025 }
jbe@106 1026 FD_SET(fd, &writefds);
jbe@106 1027 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1028 }
jbe@106 1029 }
jbe@106 1030 }
jbe@106 1031 if (!lua_isnoneornil(L, 3)) {
jbe@106 1032 lua_Number n;
jbe@106 1033 n = lua_tonumberx(L, 3, &isnum);
jbe@106 1034 if (isnum && n>=0 && n<100000000) {
jbe@106 1035 timeout.tv_sec = n;
jbe@106 1036 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1037 } else {
jbe@106 1038 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1039 }
jbe@106 1040 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1041 } else {
jbe@106 1042 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1043 }
jbe@106 1044 if (status == -1) {
jbe@106 1045 if (errno == EINTR) {
jbe@106 1046 lua_pushboolean(L, 0);
jbe@106 1047 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1048 return 2;
jbe@106 1049 } else {
jbe@106 1050 moonbr_io_errmsg();
jbe@106 1051 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1052 }
jbe@106 1053 } else if (status == 0) {
jbe@106 1054 lua_pushboolean(L, 0);
jbe@106 1055 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1056 return 2;
jbe@106 1057 } else {
jbe@106 1058 lua_pushboolean(L, 1);
jbe@106 1059 return 1;
jbe@106 1060 }
jbe@106 1061 }
jbe@106 1062
jbe@115 1063 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1064 lua_Number sub;
jbe@115 1065 struct timespec tp;
jbe@115 1066 sub = luaL_optnumber(L, 1, 0);
jbe@115 1067 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1068 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1069 }
jbe@115 1070 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1071 return 1;
jbe@115 1072 }
jbe@115 1073
jbe@79 1074 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1075 {"read", moonbr_io_read},
jbe@85 1076 {"read_nb", moonbr_io_read_nb},
jbe@86 1077 {"drain", moonbr_io_drain},
jbe@86 1078 {"drain_nb", moonbr_io_drain_nb},
jbe@80 1079 {"write", moonbr_io_write},
jbe@81 1080 {"write_nb", moonbr_io_write_nb},
jbe@80 1081 {"flush", moonbr_io_flush},
jbe@81 1082 {"flush_nb", moonbr_io_flush_nb},
jbe@88 1083 {"finish", moonbr_io_finish},
jbe@87 1084 {"close", moonbr_io_close},
jbe@85 1085 {"reset", moonbr_io_reset},
jbe@79 1086 {NULL, NULL}
jbe@79 1087 };
jbe@79 1088
jbe@79 1089 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1090 {"__index", moonbr_io_handleindex},
jbe@79 1091 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1092 {"__gc", moonbr_io_handlegc},
jbe@108 1093 {NULL, NULL}
jbe@108 1094 };
jbe@108 1095
jbe@108 1096 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1097 {"accept", moonbr_io_accept},
jbe@108 1098 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1099 {"close", moonbr_io_unlisten},
jbe@108 1100 {NULL, NULL}
jbe@108 1101 };
jbe@108 1102
jbe@108 1103 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1104 {"__gc", moonbr_io_listenergc},
jbe@79 1105 {NULL, NULL}
jbe@79 1106 };
jbe@79 1107
jbe@79 1108 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1109 {"localconnect", moonbr_io_localconnect},
jbe@111 1110 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1111 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1112 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1113 {"locallisten", moonbr_io_locallisten},
jbe@108 1114 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1115 {"poll", moonbr_io_poll},
jbe@115 1116 {"timeref", moonbr_io_timeref},
jbe@79 1117 {NULL, NULL}
jbe@79 1118 };
jbe@79 1119
jbe@79 1120 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1121
jbe@113 1122 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1123
jbe@80 1124 lua_newtable(L); // module
jbe@80 1125
jbe@79 1126 lua_newtable(L); // public metatable
jbe@79 1127 lua_newtable(L); // handle methods
jbe@79 1128 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1129 lua_pushvalue(L, -1);
jbe@108 1130 lua_setfield(L, -4, "prototype_handle");
jbe@79 1131 lua_setfield(L, -2, "__index");
jbe@79 1132 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1133
jbe@79 1134 lua_newtable(L); // handle metatable
jbe@79 1135 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 1136 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1137
jbe@108 1138 lua_newtable(L); // listener metatable
jbe@108 1139 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1140 lua_newtable(L); // listener methods
jbe@108 1141 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1142 lua_pushvalue(L, -1);
jbe@108 1143 lua_setfield(L, -4, "prototype_listener");
jbe@108 1144 lua_setfield(L, -2, "__index");
jbe@108 1145 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1146
jbe@79 1147 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1148 return 1;
jbe@79 1149
jbe@79 1150 }
jbe@79 1151

Impressum / About Us