moonbridge

annotate moonbridge_io.c @ 135:795bc86be569

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Cleanup regarding #include directives
author jbe
date Thu Apr 16 22:06:55 2015 +0200 (2015-04-16)
parents 11269ec33cd7
children ae23bcae95d1
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 <stdio.h>
jbe@135 6 #include <errno.h>
jbe@79 7 #include <unistd.h>
jbe@135 8 #include <signal.h>
jbe@135 9 #include <fcntl.h>
jbe@135 10 #include <sys/stat.h>
jbe@79 11 #include <sys/socket.h>
jbe@111 12 #include <sys/un.h>
jbe@95 13 #include <netinet/in.h>
jbe@95 14 #include <netinet/tcp.h>
jbe@135 15 #include <sys/select.h>
jbe@135 16 //#include <sys/types.h>
jbe@135 17 #include <netdb.h>
jbe@107 18 #include <arpa/inet.h>
jbe@135 19 //#include <time.h>
jbe@79 20
jbe@79 21 #include <lua.h>
jbe@79 22 #include <lauxlib.h>
jbe@79 23 #include <lualib.h>
jbe@79 24
jbe@80 25 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 26 #define MOONBR_IO_READBUFLEN 4096
jbe@80 27 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 28
jbe@108 29 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 30
jbe@80 31 #define moonbr_io_errmsg() \
jbe@80 32 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 33 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 34
jbe@79 35 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 36 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 37 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 38
jbe@79 39 typedef struct {
jbe@79 40 int fd;
jbe@107 41 int issock;
jbe@107 42 sa_family_t addrfam;
jbe@94 43 int finished;
jbe@94 44 int closed;
jbe@81 45 int nonblocking;
jbe@95 46 int nopush;
jbe@85 47 int readerr;
jbe@105 48 int readbufin;
jbe@105 49 int readbufout;
jbe@81 50 int writeerr;
jbe@83 51 size_t writeleft;
jbe@132 52 size_t flushedleft;
jbe@83 53 #if LUA_VERSION_NUM >= 503
jbe@83 54 lua_Integer writeqin;
jbe@83 55 lua_Integer writeqout;
jbe@83 56 #else
jbe@83 57 int writeqin;
jbe@83 58 int writeqout;
jbe@83 59 #endif
jbe@83 60 size_t writeqoff;
jbe@103 61 int writebufin;
jbe@103 62 int writebufout;
jbe@85 63 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 64 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 65 } moonbr_io_handle_t;
jbe@79 66
jbe@108 67 typedef struct {
jbe@108 68 int fd;
jbe@118 69 sa_family_t addrfam;
jbe@108 70 int nonblocking;
jbe@108 71 } moonbr_io_listener_t;
jbe@108 72
jbe@81 73 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 74 int flags;
jbe@95 75 if (handle->nonblocking == nonblocking) return;
jbe@95 76 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 77 if (flags == -1) {
jbe@95 78 moonbr_io_errmsg();
jbe@96 79 close(handle->fd);
jbe@96 80 handle->fd = -1;
jbe@96 81 handle->closed = 1;
jbe@95 82 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 83 }
jbe@95 84 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 85 else flags &= ~O_NONBLOCK;
jbe@95 86 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 87 moonbr_io_errmsg();
jbe@96 88 close(handle->fd);
jbe@96 89 handle->fd = -1;
jbe@96 90 handle->closed = 1;
jbe@95 91 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 92 }
jbe@95 93 handle->nonblocking = nonblocking;
jbe@81 94 }
jbe@81 95
jbe@87 96 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 97 struct linger lingerval = { 0, };
jbe@107 98 if (!handle->issock) return;
jbe@87 99 if (timeout >= 0) {
jbe@87 100 lingerval.l_onoff = 1;
jbe@87 101 lingerval.l_linger = timeout;
jbe@87 102 }
jbe@87 103 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 104 moonbr_io_errmsg();
jbe@96 105 close(handle->fd);
jbe@96 106 handle->fd = -1;
jbe@96 107 handle->closed = 1;
jbe@95 108 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 109 }
jbe@87 110 }
jbe@87 111
jbe@133 112 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 113 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 114 if (
jbe@107 115 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 116 handle->nopush == nopush
jbe@107 117 ) return;
jbe@96 118 #if defined(TCP_NOPUSH)
jbe@96 119 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 120 #elif defined(TCP_CORK)
jbe@104 121 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 122 #endif
jbe@96 123 moonbr_io_errmsg();
jbe@96 124 close(handle->fd);
jbe@96 125 handle->fd = -1;
jbe@96 126 handle->closed = 1;
jbe@104 127 #if defined(TCP_NOPUSH)
jbe@96 128 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 129 #elif defined(TCP_CORK)
jbe@95 130 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 131 #endif
jbe@95 132 }
jbe@95 133 handle->nopush = nopush;
jbe@96 134 #else
jbe@96 135 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 136 #endif
jbe@95 137 }
jbe@95 138
jbe@86 139 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 140 moonbr_io_handle_t *handle;
jbe@85 141 lua_Integer maxread;
jbe@85 142 const char *terminatorstr;
jbe@85 143 size_t terminatorlen;
jbe@85 144 char terminator;
jbe@85 145 luaL_Buffer luabuf;
jbe@85 146 size_t luabufcnt = 0;
jbe@105 147 int remaining;
jbe@85 148 char *terminatorpos;
jbe@103 149 ssize_t bytesread;
jbe@85 150 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 151 maxread = luaL_optinteger(L, 2, 0);
jbe@85 152 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 153 if (terminatorlen) {
jbe@85 154 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 155 terminator = terminatorstr[0];
jbe@85 156 }
jbe@86 157 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 158 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 159 if (handle->readerr) {
jbe@85 160 lua_pushnil(L);
jbe@85 161 lua_pushliteral(L, "Previous read error");
jbe@85 162 return 2;
jbe@85 163 }
jbe@105 164 handle->readerr = 1;
jbe@104 165 if (handle->fd < 0) goto moonbr_io_read_impl_eof; /* fake EOF to simulate shutdown */
jbe@85 166 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 167 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 168 while (1) {
jbe@105 169 remaining = -1;
jbe@105 170 if (
jbe@105 171 maxread > 0 &&
jbe@105 172 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 173 ) {
jbe@105 174 remaining = maxread - luabufcnt;
jbe@85 175 } else if (terminatorlen) {
jbe@105 176 terminatorpos = memchr(
jbe@105 177 handle->readbuf + handle->readbufout,
jbe@105 178 terminator,
jbe@105 179 handle->readbufin - handle->readbufout
jbe@105 180 );
jbe@105 181 if (terminatorpos) remaining = 1 + (
jbe@105 182 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@105 183 );
jbe@85 184 }
jbe@105 185 if (remaining >= 0) {
jbe@86 186 if (!drain) {
jbe@105 187 luaL_addlstring(
jbe@105 188 &luabuf,
jbe@105 189 handle->readbuf + handle->readbufout,
jbe@105 190 remaining
jbe@105 191 );
jbe@86 192 luaL_pushresult(&luabuf);
jbe@90 193 } else {
jbe@105 194 luaL_pushresult(&luabuf);
jbe@105 195 lua_pop(L, 1);
jbe@105 196 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 197 }
jbe@105 198 handle->readbufout += remaining;
jbe@105 199 if (handle->readbufout == handle->readbufin) {
jbe@105 200 handle->readbufin = 0;
jbe@105 201 handle->readbufout =0;
jbe@105 202 }
jbe@104 203 handle->readerr = 0;
jbe@85 204 return 1;
jbe@85 205 }
jbe@105 206 if (!drain) luaL_addlstring(
jbe@105 207 &luabuf,
jbe@105 208 handle->readbuf + handle->readbufout,
jbe@105 209 handle->readbufin - handle->readbufout
jbe@105 210 );
jbe@105 211 luabufcnt += handle->readbufin - handle->readbufout;
jbe@85 212 do {
jbe@103 213 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 214 } while (bytesread < 0 && (errno == EINTR));
jbe@105 215 if (
jbe@105 216 bytesread == 0 || (
jbe@105 217 nonblocking &&
jbe@105 218 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 219 )
jbe@105 220 ) {
jbe@105 221 handle->readbufin = 0;
jbe@105 222 handle->readbufout = 0;
jbe@105 223 if (!drain) {
jbe@105 224 luaL_pushresult(&luabuf);
jbe@105 225 if (!luabufcnt && bytesread == 0) {
jbe@105 226 lua_pop(L, 1);
jbe@105 227 moonbr_io_read_impl_eof:
jbe@105 228 lua_pushboolean(L, 0);
jbe@105 229 lua_pushliteral(L, "End of file");
jbe@105 230 handle->readerr = 0;
jbe@105 231 return 2;
jbe@105 232 }
jbe@105 233 } else {
jbe@105 234 if (!luabufcnt && bytesread == 0) lua_pushboolean(L, 1);
jbe@105 235 else lua_pushboolean(L, luabufcnt);
jbe@105 236 }
jbe@105 237 handle->readerr = 0;
jbe@105 238 return 1;
jbe@105 239 }
jbe@103 240 if (bytesread < 0) {
jbe@85 241 moonbr_io_errmsg();
jbe@85 242 lua_pushnil(L);
jbe@85 243 lua_pushstring(L, errmsg);
jbe@85 244 return 2;
jbe@85 245 }
jbe@105 246 handle->readbufin = bytesread;
jbe@105 247 handle->readbufout = 0;
jbe@86 248 }
jbe@85 249 }
jbe@85 250
jbe@85 251 static int moonbr_io_read(lua_State *L) {
jbe@86 252 return moonbr_io_read_impl(L, 0, 0);
jbe@85 253 }
jbe@85 254
jbe@85 255 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 256 return moonbr_io_read_impl(L, 1, 0);
jbe@86 257 }
jbe@86 258
jbe@86 259 static int moonbr_io_drain(lua_State *L) {
jbe@86 260 return moonbr_io_read_impl(L, 0, 1);
jbe@86 261 }
jbe@86 262
jbe@86 263 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 264 return moonbr_io_read_impl(L, 1, 1);
jbe@85 265 }
jbe@85 266
jbe@81 267 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 268 moonbr_io_handle_t *handle;
jbe@80 269 int i, top;
jbe@80 270 const char *str;
jbe@92 271 size_t strlen;
jbe@103 272 ssize_t written;
jbe@80 273 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 274 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 275 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 276 if (handle->writeerr) {
jbe@80 277 lua_pushnil(L);
jbe@80 278 lua_pushliteral(L, "Previous write error");
jbe@80 279 return 2;
jbe@80 280 }
jbe@103 281 handle->writeerr = 1;
jbe@81 282 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 283 top = lua_gettop(L);
jbe@81 284 lua_getuservalue(L, 1);
jbe@103 285 lua_getfield(L, -1, "writequeue");
jbe@84 286 for (i=2; i<=top; i++) {
jbe@84 287 luaL_checklstring(L, i, &strlen);
jbe@84 288 lua_pushvalue(L, i);
jbe@84 289 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 290 handle->writeleft += strlen;
jbe@81 291 }
jbe@132 292 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 293 while (handle->writeqout != handle->writeqin) {
jbe@83 294 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 295 str = lua_tolstring(L, -1, &strlen);
jbe@92 296 while (handle->writeqoff < strlen) {
jbe@103 297 if (
jbe@132 298 strlen - handle->writeqoff <
jbe@103 299 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 300 ) {
jbe@103 301 memcpy(
jbe@103 302 handle->writebuf + handle->writebufin,
jbe@103 303 str + handle->writeqoff,
jbe@103 304 strlen - handle->writeqoff
jbe@103 305 );
jbe@103 306 handle->writebufin += strlen - handle->writeqoff;
jbe@80 307 break;
jbe@80 308 } else {
jbe@103 309 memcpy(
jbe@103 310 handle->writebuf + handle->writebufin,
jbe@103 311 str + handle->writeqoff,
jbe@103 312 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 313 );
jbe@103 314 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 315 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 316 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 317 written = write(
jbe@103 318 handle->fd,
jbe@103 319 handle->writebuf + handle->writebufout,
jbe@103 320 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 321 );
jbe@103 322 if (written < 0) {
jbe@81 323 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 324 goto moonbr_io_write_impl_block;
jbe@81 325 } else if (errno != EINTR) {
jbe@80 326 moonbr_io_errmsg();
jbe@80 327 lua_pushnil(L);
jbe@80 328 lua_pushstring(L, errmsg);
jbe@80 329 return 2;
jbe@80 330 }
jbe@103 331 } else {
jbe@103 332 handle->writebufout += written;
jbe@103 333 handle->writeleft -= written;
jbe@133 334 if (handle->flushedleft) {
jbe@133 335 if (written >= handle->flushedleft) {
jbe@133 336 handle->flushedleft = 0;
jbe@133 337 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 338 } else {
jbe@133 339 handle->flushedleft -= written;
jbe@133 340 }
jbe@133 341 }
jbe@80 342 }
jbe@80 343 }
jbe@103 344 handle->writebufin = 0;
jbe@103 345 handle->writebufout = 0;
jbe@80 346 }
jbe@80 347 }
jbe@81 348 handle->writeqoff = 0;
jbe@81 349 lua_pop(L, 1);
jbe@81 350 lua_pushnil(L);
jbe@83 351 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 352 }
jbe@132 353 while (handle->flushedleft) {
jbe@133 354 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 355 written = write(
jbe@132 356 handle->fd,
jbe@132 357 handle->writebuf + handle->writebufout,
jbe@132 358 handle->writebufin - handle->writebufout
jbe@132 359 );
jbe@132 360 if (written < 0) {
jbe@132 361 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 362 goto moonbr_io_write_impl_block;
jbe@132 363 } else if (errno != EINTR) {
jbe@132 364 moonbr_io_errmsg();
jbe@132 365 lua_pushnil(L);
jbe@132 366 lua_pushstring(L, errmsg);
jbe@132 367 return 2;
jbe@81 368 }
jbe@132 369 } else {
jbe@132 370 handle->writebufout += written;
jbe@132 371 handle->writeleft -= written;
jbe@133 372 if (handle->flushedleft) {
jbe@133 373 if (written >= handle->flushedleft) {
jbe@133 374 handle->flushedleft = 0;
jbe@133 375 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 376 } else {
jbe@133 377 handle->flushedleft -= written;
jbe@133 378 }
jbe@133 379 }
jbe@81 380 }
jbe@132 381 }
jbe@132 382 if (handle->writebufout == handle->writebufin) {
jbe@103 383 handle->writebufin = 0;
jbe@103 384 handle->writebufout = 0;
jbe@81 385 }
jbe@103 386 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 387 else lua_pushvalue(L, 1);
jbe@103 388 handle->writeerr = 0;
jbe@80 389 return 1;
jbe@81 390 moonbr_io_write_impl_block:
jbe@91 391 lua_pushinteger(L, handle->writeleft);
jbe@103 392 handle->writeerr = 0;
jbe@81 393 return 1;
jbe@81 394 }
jbe@81 395
jbe@81 396 static int moonbr_io_write(lua_State *L) {
jbe@81 397 return moonbr_io_write_impl(L, 0, 0);
jbe@81 398 }
jbe@81 399
jbe@81 400 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 401 return moonbr_io_write_impl(L, 1, 0);
jbe@80 402 }
jbe@80 403
jbe@80 404 static int moonbr_io_flush(lua_State *L) {
jbe@81 405 return moonbr_io_write_impl(L, 0, 1);
jbe@81 406 }
jbe@81 407
jbe@81 408 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 409 return moonbr_io_write_impl(L, 1, 1);
jbe@80 410 }
jbe@80 411
jbe@88 412 static int moonbr_io_finish(lua_State *L) {
jbe@88 413 moonbr_io_handle_t *handle;
jbe@88 414 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 415 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 416 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 417 if (handle->writeleft) {
jbe@94 418 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 419 lua_pushvalue(L, 1);
jbe@116 420 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 421 handle->finished = 1;
jbe@116 422 lua_error(L);
jbe@116 423 }
jbe@94 424 if (!lua_toboolean(L, -2)) {
jbe@94 425 handle->finished = 1;
jbe@94 426 return 2;
jbe@88 427 }
jbe@94 428 }
jbe@94 429 handle->finished = 1;
jbe@107 430 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 431 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 432 moonbr_io_errmsg();
jbe@88 433 lua_pushnil(L);
jbe@88 434 lua_pushstring(L, errmsg);
jbe@88 435 return 2;
jbe@88 436 }
jbe@94 437 } else {
jbe@94 438 if (close(handle->fd)) {
jbe@94 439 moonbr_io_errmsg();
jbe@94 440 handle->fd = -1;
jbe@94 441 lua_pushnil(L);
jbe@94 442 lua_pushstring(L, errmsg);
jbe@94 443 return 2;
jbe@94 444 }
jbe@94 445 handle->fd = -1; /* fake EOF on read */
jbe@88 446 }
jbe@88 447 lua_pushboolean(L, 1);
jbe@88 448 return 1;
jbe@88 449 }
jbe@88 450
jbe@94 451 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 452 moonbr_io_handle_t *handle;
jbe@83 453 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 454 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 455 if (!reset) {
jbe@87 456 if (handle->writeleft) {
jbe@87 457 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 458 lua_pushvalue(L, 1);
jbe@116 459 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 460 handle->closed = 1;
jbe@116 461 close(handle->fd);
jbe@116 462 handle->fd = -1;
jbe@116 463 lua_error(L);
jbe@116 464 }
jbe@129 465 handle->closed = 1;
jbe@87 466 if (!lua_toboolean(L, -2)) {
jbe@87 467 close(handle->fd);
jbe@87 468 handle->fd = -1;
jbe@87 469 return 2;
jbe@87 470 }
jbe@129 471 } else {
jbe@129 472 handle->closed = 1;
jbe@129 473 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 474 }
jbe@129 475 } else {
jbe@129 476 handle->closed = 1;
jbe@83 477 }
jbe@94 478 if (handle->fd >= 0) {
jbe@94 479 if (close(handle->fd)) {
jbe@94 480 moonbr_io_errmsg();
jbe@94 481 handle->fd = -1;
jbe@94 482 lua_pushnil(L);
jbe@94 483 lua_pushstring(L, errmsg);
jbe@94 484 return 2;
jbe@94 485 }
jbe@104 486 handle->fd = -1;
jbe@83 487 }
jbe@83 488 lua_pushboolean(L, 1);
jbe@83 489 return 1;
jbe@84 490
jbe@83 491 }
jbe@83 492
jbe@94 493 static int moonbr_io_close(lua_State *L) {
jbe@94 494 return moonbr_io_close_impl(L, 0);
jbe@94 495 }
jbe@94 496
jbe@84 497 static int moonbr_io_reset(lua_State *L) {
jbe@94 498 return moonbr_io_close_impl(L, 1);
jbe@84 499 }
jbe@84 500
jbe@108 501 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 502 moonbr_io_handle_t *handle;
jbe@88 503 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 504 if (handle->fd >= 0) {
jbe@88 505 lua_pushcfunction(L, moonbr_io_close);
jbe@88 506 lua_pushvalue(L, 1);
jbe@88 507 lua_pushinteger(L, 0);
jbe@88 508 lua_call(L, 2, 0);
jbe@88 509 }
jbe@88 510 return 0;
jbe@88 511 }
jbe@88 512
jbe@100 513 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 514 moonbr_io_handle_t *handle;
jbe@88 515 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 516 if (!handle->closed) {
jbe@100 517 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 518 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 519 lua_call(L, 1, 0);
jbe@88 520 }
jbe@88 521 }
jbe@88 522
jbe@107 523 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 524 moonbr_io_handle_t *handle;
jbe@107 525 struct sockaddr addr;
jbe@107 526 socklen_t addrlen;
jbe@79 527 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 528 handle->fd = fd;
jbe@107 529 addrlen = sizeof(addr);
jbe@107 530 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 531 if (errno != ENOTSOCK) {
jbe@107 532 moonbr_io_errmsg();
jbe@107 533 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 534 }
jbe@107 535 handle->issock = 0;
jbe@107 536 } else {
jbe@107 537 handle->issock = 1;
jbe@107 538 handle->addrfam = addr.sa_family;
jbe@107 539 }
jbe@94 540 handle->finished = 0;
jbe@94 541 handle->closed = 0;
jbe@81 542 handle->nonblocking = -1;
jbe@95 543 handle->nopush = -1;
jbe@85 544 handle->readerr = 0;
jbe@105 545 handle->readbufin = 0;
jbe@105 546 handle->readbufout = 0;
jbe@81 547 handle->writeerr = 0;
jbe@81 548 handle->writeleft = 0;
jbe@132 549 handle->flushedleft = 0;
jbe@83 550 handle->writeqin = 0;
jbe@83 551 handle->writeqout = 0;
jbe@81 552 handle->writeqoff = 0;
jbe@103 553 handle->writebufin = 0;
jbe@103 554 handle->writebufout = 0;
jbe@87 555 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 556 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 557 lua_setmetatable(L, -2);
jbe@79 558 lua_newtable(L); // uservalue
jbe@81 559 lua_newtable(L);
jbe@103 560 lua_setfield(L, -2, "writequeue");
jbe@79 561 lua_newtable(L); // public
jbe@107 562 if (handle->addrfam == AF_INET6) {
jbe@107 563 struct sockaddr_in6 addr_in6;
jbe@107 564 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 565 const char *addrstr;
jbe@107 566 addrlen = sizeof(addr_in6);
jbe@107 567 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 568 moonbr_io_errmsg();
jbe@107 569 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 570 }
jbe@107 571 if (addrlen > sizeof(addr_in6)) {
jbe@107 572 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 573 }
jbe@107 574 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 575 if (!addrstr) {
jbe@107 576 moonbr_io_errmsg();
jbe@107 577 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 578 } else {
jbe@107 579 lua_pushstring(L, addrstr);
jbe@107 580 lua_setfield(L, -2, "local_ip6");
jbe@107 581 }
jbe@107 582 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 583 lua_setfield(L, -2, "local_tcpport");
jbe@107 584 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 585 moonbr_io_errmsg();
jbe@107 586 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 587 }
jbe@107 588 if (addrlen > sizeof(addr_in6)) {
jbe@107 589 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 590 }
jbe@107 591 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 592 if (!addrstr) {
jbe@107 593 moonbr_io_errmsg();
jbe@107 594 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 595 } else {
jbe@107 596 lua_pushstring(L, addrstr);
jbe@107 597 lua_setfield(L, -2, "remote_ip6");
jbe@107 598 }
jbe@107 599 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 600 lua_setfield(L, -2, "remote_tcpport");
jbe@107 601 } else if (handle->addrfam == AF_INET) {
jbe@107 602 struct sockaddr_in addr_in;
jbe@107 603 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 604 const char *addrstr;
jbe@107 605 addrlen = sizeof(addr_in);
jbe@107 606 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 607 moonbr_io_errmsg();
jbe@107 608 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 609 }
jbe@107 610 if (addrlen > sizeof(addr_in)) {
jbe@107 611 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 612 }
jbe@107 613 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 614 if (!addrstr) {
jbe@107 615 moonbr_io_errmsg();
jbe@107 616 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 617 } else {
jbe@107 618 lua_pushstring(L, addrstr);
jbe@107 619 lua_setfield(L, -2, "local_ip4");
jbe@107 620 }
jbe@107 621 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 622 lua_setfield(L, -2, "local_tcpport");
jbe@107 623 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 624 moonbr_io_errmsg();
jbe@107 625 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 626 }
jbe@107 627 if (addrlen > sizeof(addr_in)) {
jbe@107 628 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 629 }
jbe@107 630 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 631 if (!addrstr) {
jbe@107 632 moonbr_io_errmsg();
jbe@107 633 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 634 } else {
jbe@107 635 lua_pushstring(L, addrstr);
jbe@107 636 lua_setfield(L, -2, "remote_ip4");
jbe@107 637 }
jbe@107 638 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 639 lua_setfield(L, -2, "remote_tcpport");
jbe@107 640 }
jbe@79 641 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 642 lua_setmetatable(L, -2);
jbe@79 643 lua_setfield(L, -2, "public");
jbe@79 644 lua_setuservalue(L, -2);
jbe@79 645 }
jbe@79 646
jbe@79 647 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 648 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 649 lua_getuservalue(L, 1);
jbe@79 650 lua_getfield(L, -1, "public");
jbe@79 651 lua_pushvalue(L, 2);
jbe@79 652 lua_gettable(L, -2);
jbe@79 653 return 1;
jbe@79 654 }
jbe@79 655
jbe@79 656 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 657 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 658 lua_getuservalue(L, 1);
jbe@79 659 lua_getfield(L, -1, "public");
jbe@79 660 lua_pushvalue(L, 2);
jbe@79 661 lua_pushvalue(L, 3);
jbe@79 662 lua_settable(L, -3);
jbe@79 663 return 0;
jbe@79 664 }
jbe@79 665
jbe@111 666 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 667 const char *path;
jbe@111 668 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 669 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 670 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 671 ) - 1; /* one byte for termination */
jbe@111 672 int sock;
jbe@111 673 path = luaL_checkstring(L, 1);
jbe@111 674 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 675 strcpy(sockaddr.sun_path, path);
jbe@111 676 sock = socket(
jbe@111 677 PF_LOCAL,
jbe@111 678 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 679 0
jbe@111 680 );
jbe@111 681 if (sock < 0) {
jbe@111 682 moonbr_io_errmsg();
jbe@111 683 lua_pushnil(L);
jbe@111 684 lua_pushstring(L, errmsg);
jbe@111 685 return 2;
jbe@111 686 }
jbe@111 687 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 688 if (!nonblocking && errno == EINTR) {
jbe@111 689 moonbr_io_errmsg();
jbe@111 690 close(sock);
jbe@111 691 lua_pushnil(L);
jbe@111 692 lua_pushstring(L, errmsg);
jbe@111 693 return 2;
jbe@111 694 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 695 moonbr_io_errmsg();
jbe@111 696 lua_pushnil(L);
jbe@111 697 lua_pushstring(L, errmsg);
jbe@111 698 return 2;
jbe@111 699 }
jbe@111 700 }
jbe@111 701 moonbr_io_pushhandle(L, sock);
jbe@111 702 return 1;
jbe@111 703 }
jbe@111 704
jbe@111 705 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 706 return moonbr_io_localconnect_impl(L, 0);
jbe@111 707 }
jbe@111 708
jbe@111 709 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 710 return moonbr_io_localconnect_impl(L, 1);
jbe@111 711 }
jbe@111 712
jbe@99 713 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 714 const char *host, *port;
jbe@98 715 struct addrinfo hints = { 0, };
jbe@98 716 struct addrinfo *res, *addrinfo;
jbe@98 717 int errcode;
jbe@98 718 int sock;
jbe@98 719 host = luaL_checkstring(L, 1);
jbe@98 720 port = luaL_checkstring(L, 2);
jbe@98 721 hints.ai_family = AF_UNSPEC;
jbe@98 722 hints.ai_socktype = SOCK_STREAM;
jbe@98 723 hints.ai_protocol = IPPROTO_TCP;
jbe@98 724 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 725 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 726 if (errcode) {
jbe@102 727 freeaddrinfo(res);
jbe@98 728 if (errcode == EAI_SYSTEM) {
jbe@98 729 moonbr_io_errmsg();
jbe@98 730 lua_pushnil(L);
jbe@98 731 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 732 } else {
jbe@98 733 lua_pushnil(L);
jbe@98 734 lua_pushstring(L, gai_strerror(errcode));
jbe@98 735 }
jbe@98 736 return 2;
jbe@98 737 }
jbe@98 738 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 739 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 740 }
jbe@98 741 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 742 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 743 }
jbe@98 744 addrinfo = res;
jbe@98 745 moonbr_io_tcpconnect_found:
jbe@99 746 sock = socket(
jbe@134 747 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 748 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 749 addrinfo->ai_protocol
jbe@99 750 );
jbe@98 751 if (sock < 0) {
jbe@98 752 moonbr_io_errmsg();
jbe@108 753 freeaddrinfo(res);
jbe@98 754 lua_pushnil(L);
jbe@98 755 lua_pushstring(L, errmsg);
jbe@108 756 return 2;
jbe@98 757 }
jbe@98 758 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 759 freeaddrinfo(res);
jbe@99 760 if (!nonblocking && errno == EINTR) {
jbe@99 761 moonbr_io_errmsg();
jbe@99 762 close(sock);
jbe@99 763 lua_pushnil(L);
jbe@99 764 lua_pushstring(L, errmsg);
jbe@99 765 return 2;
jbe@99 766 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 767 moonbr_io_errmsg();
jbe@99 768 lua_pushnil(L);
jbe@99 769 lua_pushstring(L, errmsg);
jbe@99 770 return 2;
jbe@99 771 }
jbe@108 772 } else {
jbe@108 773 freeaddrinfo(res);
jbe@98 774 }
jbe@107 775 moonbr_io_pushhandle(L, sock);
jbe@98 776 return 1;
jbe@98 777 }
jbe@98 778
jbe@99 779 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 780 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 781 }
jbe@99 782
jbe@99 783 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 784 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 785 }
jbe@99 786
jbe@112 787 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 788 moonbr_io_listener_t *listener;
jbe@112 789 const char *path;
jbe@118 790 struct stat sb;
jbe@112 791 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 792 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 793 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 794 ) - 1; /* one byte for termination */
jbe@112 795 int sock;
jbe@112 796 path = luaL_checkstring(L, 1);
jbe@112 797 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 798 strcpy(sockaddr.sun_path, path);
jbe@118 799 if (stat(path, &sb) == 0) {
jbe@118 800 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 801 }
jbe@112 802 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 803 listener->fd = -1;
jbe@112 804 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 805 sock = socket(
jbe@112 806 PF_LOCAL,
jbe@112 807 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 808 0
jbe@112 809 );
jbe@112 810 if (sock < 0) {
jbe@112 811 moonbr_io_errmsg();
jbe@112 812 lua_pushnil(L);
jbe@112 813 lua_pushstring(L, errmsg);
jbe@112 814 return 2;
jbe@112 815 }
jbe@112 816 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 817 moonbr_io_errmsg();
jbe@112 818 close(sock);
jbe@112 819 lua_pushnil(L);
jbe@112 820 lua_pushstring(L, errmsg);
jbe@112 821 return 2;
jbe@112 822 }
jbe@112 823 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 824 moonbr_io_errmsg();
jbe@112 825 close(sock);
jbe@112 826 lua_pushnil(L);
jbe@112 827 lua_pushstring(L, errmsg);
jbe@112 828 return 2;
jbe@112 829 }
jbe@112 830 listener->fd = sock;
jbe@118 831 listener->addrfam = AF_LOCAL;
jbe@112 832 listener->nonblocking = -1;
jbe@112 833 return 1;
jbe@112 834 }
jbe@112 835
jbe@108 836 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 837 moonbr_io_listener_t *listener;
jbe@108 838 const char *host, *port;
jbe@108 839 struct addrinfo hints = { 0, };
jbe@108 840 struct addrinfo *res, *addrinfo;
jbe@108 841 int errcode;
jbe@108 842 int sock;
jbe@108 843 host = luaL_optstring(L, 1, NULL);
jbe@108 844 port = luaL_checkstring(L, 2);
jbe@108 845 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 846 listener->fd = -1;
jbe@108 847 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 848 hints.ai_family = AF_UNSPEC;
jbe@108 849 hints.ai_socktype = SOCK_STREAM;
jbe@108 850 hints.ai_protocol = IPPROTO_TCP;
jbe@108 851 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 852 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 853 if (errcode) {
jbe@108 854 freeaddrinfo(res);
jbe@108 855 if (errcode == EAI_SYSTEM) {
jbe@108 856 moonbr_io_errmsg();
jbe@108 857 lua_pushnil(L);
jbe@108 858 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 859 } else {
jbe@108 860 lua_pushnil(L);
jbe@108 861 lua_pushstring(L, gai_strerror(errcode));
jbe@108 862 }
jbe@108 863 return 2;
jbe@108 864 }
jbe@108 865 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 866 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 867 }
jbe@108 868 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 869 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 870 }
jbe@108 871 addrinfo = res;
jbe@108 872 moonbr_io_tcpconnect_found:
jbe@118 873 listener->addrfam = addrinfo->ai_family;
jbe@108 874 sock = socket(
jbe@134 875 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 876 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 877 addrinfo->ai_protocol
jbe@108 878 );
jbe@108 879 if (sock < 0) {
jbe@108 880 moonbr_io_errmsg();
jbe@108 881 freeaddrinfo(res);
jbe@108 882 lua_pushnil(L);
jbe@108 883 lua_pushstring(L, errmsg);
jbe@108 884 return 2;
jbe@108 885 }
jbe@120 886 {
jbe@120 887 static const int reuseval = 1;
jbe@120 888 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 889 moonbr_io_errmsg();
jbe@120 890 freeaddrinfo(res);
jbe@120 891 close(sock);
jbe@120 892 lua_pushnil(L);
jbe@120 893 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 894 return 2;
jbe@120 895 }
jbe@120 896 }
jbe@108 897 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 898 moonbr_io_errmsg();
jbe@108 899 freeaddrinfo(res);
jbe@108 900 close(sock);
jbe@108 901 lua_pushnil(L);
jbe@108 902 lua_pushstring(L, errmsg);
jbe@108 903 return 2;
jbe@108 904 }
jbe@108 905 freeaddrinfo(res);
jbe@108 906 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 907 moonbr_io_errmsg();
jbe@108 908 close(sock);
jbe@108 909 lua_pushnil(L);
jbe@108 910 lua_pushstring(L, errmsg);
jbe@108 911 return 2;
jbe@108 912 }
jbe@108 913 listener->fd = sock;
jbe@108 914 listener->nonblocking = -1;
jbe@108 915 return 1;
jbe@108 916 }
jbe@108 917
jbe@108 918 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 919 moonbr_io_listener_t *listener;
jbe@108 920 int fd;
jbe@108 921 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 922 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 923 if (listener->nonblocking != nonblocking) {
jbe@108 924 int flags;
jbe@108 925 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 926 if (flags == -1) {
jbe@108 927 moonbr_io_errmsg();
jbe@108 928 close(listener->fd);
jbe@108 929 listener->fd = -1;
jbe@108 930 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 931 }
jbe@108 932 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 933 else flags &= ~O_NONBLOCK;
jbe@108 934 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 935 moonbr_io_errmsg();
jbe@108 936 close(listener->fd);
jbe@108 937 listener->fd = -1;
jbe@108 938 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 939 }
jbe@108 940 listener->nonblocking = nonblocking;
jbe@108 941 }
jbe@108 942 while (1) {
jbe@108 943 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 944 if (fd < 0) {
jbe@108 945 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 946 lua_pushboolean(L, 0);
jbe@108 947 lua_pushliteral(L, "No incoming connection pending");
jbe@108 948 return 2;
jbe@108 949 } else if (errno != EINTR) {
jbe@108 950 moonbr_io_errmsg();
jbe@108 951 lua_pushnil(L);
jbe@108 952 lua_pushstring(L, errmsg);
jbe@108 953 return 2;
jbe@108 954 }
jbe@108 955 } else {
jbe@108 956 moonbr_io_pushhandle(L, fd);
jbe@108 957 return 1;
jbe@108 958 }
jbe@108 959 }
jbe@108 960 }
jbe@108 961
jbe@108 962 static int moonbr_io_accept(lua_State *L) {
jbe@108 963 return moonbr_io_accept_impl(L, 0);
jbe@108 964 }
jbe@108 965
jbe@108 966 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 967 return moonbr_io_accept_impl(L, 1);
jbe@108 968 }
jbe@108 969
jbe@108 970 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 971 moonbr_io_listener_t *listener;
jbe@118 972 struct sockaddr_un addr;
jbe@118 973 socklen_t addrlen;
jbe@118 974 struct stat sb;
jbe@108 975 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 976 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 977 addrlen = sizeof(addr);
jbe@118 978 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 979 if (close(listener->fd)) {
jbe@108 980 moonbr_io_errmsg();
jbe@108 981 listener->fd = -1;
jbe@118 982 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 983 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 984 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 985 }
jbe@118 986 }
jbe@108 987 lua_pushnil(L);
jbe@108 988 lua_pushstring(L, errmsg);
jbe@108 989 return 2;
jbe@108 990 }
jbe@108 991 listener->fd = -1;
jbe@118 992 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 993 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 994 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 995 }
jbe@118 996 }
jbe@108 997 lua_pushboolean(L, 1);
jbe@108 998 return 1;
jbe@108 999 }
jbe@108 1000
jbe@108 1001 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1002 moonbr_io_listener_t *listener;
jbe@108 1003 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1004 if (listener->fd >= 0) close(listener->fd);
jbe@108 1005 listener->fd = -1;
jbe@108 1006 return 0;
jbe@108 1007 }
jbe@108 1008
jbe@106 1009 static int moonbr_io_poll(lua_State *L) {
jbe@106 1010 moonbr_io_handle_t *handle;
jbe@108 1011 moonbr_io_listener_t *listener;
jbe@106 1012 int fd, isnum;
jbe@106 1013 int nfds = 0;
jbe@106 1014 fd_set readfds, writefds, exceptfds;
jbe@106 1015 struct timeval timeout = {0, };
jbe@106 1016 int status;
jbe@106 1017 FD_ZERO(&readfds);
jbe@106 1018 FD_ZERO(&writefds);
jbe@106 1019 FD_ZERO(&exceptfds);
jbe@106 1020 if (!lua_isnoneornil(L, 1)) {
jbe@106 1021 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1022 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1023 if (lua_toboolean(L, -1)) {
jbe@106 1024 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1025 if (handle) {
jbe@109 1026 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1027 fd = handle->fd;
jbe@122 1028 if (
jbe@122 1029 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1030 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1031 ) {
jbe@109 1032 lua_pushboolean(L, 1);
jbe@109 1033 return 1;
jbe@109 1034 }
jbe@106 1035 } else {
jbe@108 1036 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1037 if (listener) {
jbe@108 1038 fd = listener->fd;
jbe@108 1039 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1040 } else {
jbe@108 1041 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1042 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1043 }
jbe@106 1044 }
jbe@106 1045 FD_SET(fd, &readfds);
jbe@106 1046 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1047 }
jbe@106 1048 }
jbe@106 1049 }
jbe@106 1050 if (!lua_isnoneornil(L, 2)) {
jbe@106 1051 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1052 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1053 if (lua_toboolean(L, -1)) {
jbe@106 1054 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1055 if (handle) {
jbe@109 1056 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1057 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1058 fd = handle->fd;
jbe@106 1059 } else {
jbe@108 1060 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1061 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1062 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1063 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1064 }
jbe@106 1065 FD_SET(fd, &writefds);
jbe@106 1066 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1067 }
jbe@106 1068 }
jbe@106 1069 }
jbe@106 1070 if (!lua_isnoneornil(L, 3)) {
jbe@106 1071 lua_Number n;
jbe@106 1072 n = lua_tonumberx(L, 3, &isnum);
jbe@106 1073 if (isnum && n>=0 && n<100000000) {
jbe@106 1074 timeout.tv_sec = n;
jbe@106 1075 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1076 } else {
jbe@106 1077 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1078 }
jbe@106 1079 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1080 } else {
jbe@106 1081 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1082 }
jbe@106 1083 if (status == -1) {
jbe@106 1084 if (errno == EINTR) {
jbe@106 1085 lua_pushboolean(L, 0);
jbe@106 1086 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1087 return 2;
jbe@106 1088 } else {
jbe@106 1089 moonbr_io_errmsg();
jbe@106 1090 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1091 }
jbe@106 1092 } else if (status == 0) {
jbe@106 1093 lua_pushboolean(L, 0);
jbe@106 1094 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1095 return 2;
jbe@106 1096 } else {
jbe@106 1097 lua_pushboolean(L, 1);
jbe@106 1098 return 1;
jbe@106 1099 }
jbe@106 1100 }
jbe@106 1101
jbe@115 1102 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1103 lua_Number sub;
jbe@115 1104 struct timespec tp;
jbe@115 1105 sub = luaL_optnumber(L, 1, 0);
jbe@115 1106 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1107 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1108 }
jbe@115 1109 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1110 return 1;
jbe@115 1111 }
jbe@115 1112
jbe@79 1113 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1114 {"read", moonbr_io_read},
jbe@85 1115 {"read_nb", moonbr_io_read_nb},
jbe@86 1116 {"drain", moonbr_io_drain},
jbe@86 1117 {"drain_nb", moonbr_io_drain_nb},
jbe@80 1118 {"write", moonbr_io_write},
jbe@81 1119 {"write_nb", moonbr_io_write_nb},
jbe@80 1120 {"flush", moonbr_io_flush},
jbe@81 1121 {"flush_nb", moonbr_io_flush_nb},
jbe@88 1122 {"finish", moonbr_io_finish},
jbe@87 1123 {"close", moonbr_io_close},
jbe@85 1124 {"reset", moonbr_io_reset},
jbe@79 1125 {NULL, NULL}
jbe@79 1126 };
jbe@79 1127
jbe@79 1128 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1129 {"__index", moonbr_io_handleindex},
jbe@79 1130 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1131 {"__gc", moonbr_io_handlegc},
jbe@108 1132 {NULL, NULL}
jbe@108 1133 };
jbe@108 1134
jbe@108 1135 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1136 {"accept", moonbr_io_accept},
jbe@108 1137 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1138 {"close", moonbr_io_unlisten},
jbe@108 1139 {NULL, NULL}
jbe@108 1140 };
jbe@108 1141
jbe@108 1142 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1143 {"__gc", moonbr_io_listenergc},
jbe@79 1144 {NULL, NULL}
jbe@79 1145 };
jbe@79 1146
jbe@79 1147 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1148 {"localconnect", moonbr_io_localconnect},
jbe@111 1149 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1150 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1151 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1152 {"locallisten", moonbr_io_locallisten},
jbe@108 1153 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1154 {"poll", moonbr_io_poll},
jbe@115 1155 {"timeref", moonbr_io_timeref},
jbe@79 1156 {NULL, NULL}
jbe@79 1157 };
jbe@79 1158
jbe@79 1159 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1160
jbe@113 1161 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1162
jbe@80 1163 lua_newtable(L); // module
jbe@80 1164
jbe@79 1165 lua_newtable(L); // public metatable
jbe@79 1166 lua_newtable(L); // handle methods
jbe@79 1167 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1168 lua_pushvalue(L, -1);
jbe@108 1169 lua_setfield(L, -4, "prototype_handle");
jbe@79 1170 lua_setfield(L, -2, "__index");
jbe@79 1171 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1172
jbe@79 1173 lua_newtable(L); // handle metatable
jbe@79 1174 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 1175 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1176
jbe@108 1177 lua_newtable(L); // listener metatable
jbe@108 1178 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1179 lua_newtable(L); // listener methods
jbe@108 1180 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1181 lua_pushvalue(L, -1);
jbe@108 1182 lua_setfield(L, -4, "prototype_listener");
jbe@108 1183 lua_setfield(L, -2, "__index");
jbe@108 1184 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1185
jbe@79 1186 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1187 return 1;
jbe@79 1188
jbe@79 1189 }
jbe@79 1190

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