moonbridge

annotate moonbridge_io.c @ 100:df1ab25c6513

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Bugfix in C function moonbr_io_closehandle
author jbe
date Wed Apr 08 05:11:58 2015 +0200 (2015-04-08)
parents c9ffbdac1337
children 51ff6ad11677
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@79 8 #include <sys/select.h>
jbe@81 9 #include <fcntl.h>
jbe@95 10 #include <netinet/in.h>
jbe@95 11 #include <netinet/tcp.h>
jbe@98 12 #include <sys/types.h>
jbe@98 13 #include <netdb.h>
jbe@79 14
jbe@79 15 #include <lua.h>
jbe@79 16 #include <lauxlib.h>
jbe@79 17 #include <lualib.h>
jbe@79 18
jbe@80 19 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 20 #define MOONBR_IO_READBUFLEN 4096
jbe@80 21 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 22
jbe@80 23 #define moonbr_io_errmsg() \
jbe@80 24 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 25 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 26
jbe@79 27 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 28 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@79 29
jbe@79 30 typedef struct {
jbe@79 31 int fd;
jbe@95 32 int isnetwork;
jbe@94 33 int finished;
jbe@94 34 int closed;
jbe@81 35 int nonblocking;
jbe@95 36 int nopush;
jbe@85 37 int readerr;
jbe@85 38 int readbufcnt;
jbe@81 39 int writeerr;
jbe@83 40 size_t writeleft;
jbe@83 41 #if LUA_VERSION_NUM >= 503
jbe@83 42 lua_Integer writeqin;
jbe@83 43 lua_Integer writeqout;
jbe@83 44 #else
jbe@83 45 int writeqin;
jbe@83 46 int writeqout;
jbe@83 47 #endif
jbe@83 48 size_t writeqoff;
jbe@81 49 int writebufcnt;
jbe@85 50 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 51 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 52 } moonbr_io_handle_t;
jbe@79 53
jbe@81 54 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 55 int flags;
jbe@95 56 if (handle->nonblocking == nonblocking) return;
jbe@95 57 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 58 if (flags == -1) {
jbe@95 59 moonbr_io_errmsg();
jbe@96 60 close(handle->fd);
jbe@96 61 handle->fd = -1;
jbe@96 62 handle->closed = 1;
jbe@95 63 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 64 }
jbe@95 65 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 66 else flags &= ~O_NONBLOCK;
jbe@95 67 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 68 moonbr_io_errmsg();
jbe@96 69 close(handle->fd);
jbe@96 70 handle->fd = -1;
jbe@96 71 handle->closed = 1;
jbe@95 72 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 73 }
jbe@95 74 handle->nonblocking = nonblocking;
jbe@81 75 }
jbe@81 76
jbe@87 77 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 78 struct linger lingerval = { 0, };
jbe@95 79 if (!handle->isnetwork) return;
jbe@87 80 if (timeout >= 0) {
jbe@87 81 lingerval.l_onoff = 1;
jbe@87 82 lingerval.l_linger = timeout;
jbe@87 83 }
jbe@87 84 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 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 while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 90 }
jbe@87 91 }
jbe@87 92
jbe@95 93 static void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 94 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@95 95 if (!handle->isnetwork || handle->nopush == nopush) return;
jbe@96 96 #if defined(TCP_NOPUSH)
jbe@96 97 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@96 98 moonbr_io_errmsg();
jbe@96 99 close(handle->fd);
jbe@96 100 handle->fd = -1;
jbe@96 101 handle->closed = 1;
jbe@96 102 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 103 }
jbe@96 104 #elif defined(TCP_CORK)
jbe@95 105 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@95 106 moonbr_io_errmsg();
jbe@96 107 close(handle->fd);
jbe@96 108 handle->fd = -1;
jbe@96 109 handle->closed = 1;
jbe@95 110 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@95 111 }
jbe@95 112 #endif
jbe@95 113 handle->nopush = nopush;
jbe@96 114 #else
jbe@96 115 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 116 #endif
jbe@95 117 }
jbe@95 118
jbe@86 119 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 120 moonbr_io_handle_t *handle;
jbe@85 121 lua_Integer maxread;
jbe@85 122 const char *terminatorstr;
jbe@85 123 size_t terminatorlen;
jbe@85 124 char terminator;
jbe@85 125 luaL_Buffer luabuf;
jbe@85 126 size_t luabufcnt = 0;
jbe@86 127 int endcnt;
jbe@85 128 char *terminatorpos;
jbe@85 129 ssize_t result;
jbe@85 130 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 131 maxread = luaL_optinteger(L, 2, 0);
jbe@85 132 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 133 if (terminatorlen) {
jbe@85 134 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 135 terminator = terminatorstr[0];
jbe@85 136 }
jbe@86 137 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 138 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@94 139 if (handle->fd < 0) goto moonbr_io_read_impl_eof; /* fake EOF to simulate shutdown */
jbe@85 140 if (handle->readerr) {
jbe@85 141 lua_pushnil(L);
jbe@85 142 lua_pushliteral(L, "Previous read error");
jbe@85 143 return 2;
jbe@85 144 }
jbe@85 145 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 146 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 147 while (1) {
jbe@86 148 endcnt = -1;
jbe@85 149 if (maxread > 0 && handle->readbufcnt >= maxread - luabufcnt) {
jbe@86 150 endcnt = maxread - luabufcnt;
jbe@85 151 } else if (terminatorlen) {
jbe@85 152 terminatorpos = memchr(handle->readbuf, terminator, handle->readbufcnt);
jbe@86 153 if (terminatorpos) endcnt = 1 + (terminatorpos - handle->readbuf);
jbe@85 154 }
jbe@86 155 if (endcnt >= 0) {
jbe@86 156 if (!drain) {
jbe@86 157 luaL_addlstring(&luabuf, handle->readbuf, endcnt);
jbe@86 158 luaL_pushresult(&luabuf);
jbe@90 159 } else {
jbe@90 160 luabufcnt += handle->readbufcnt;
jbe@90 161 lua_pushinteger(L, luabufcnt);
jbe@86 162 }
jbe@86 163 handle->readbufcnt -= endcnt;
jbe@86 164 memmove(handle->readbuf, handle->readbuf + endcnt, handle->readbufcnt);
jbe@85 165 return 1;
jbe@85 166 }
jbe@86 167 if (!drain) luaL_addlstring(&luabuf, handle->readbuf, handle->readbufcnt);
jbe@85 168 luabufcnt += handle->readbufcnt;
jbe@85 169 handle->readbufcnt = 0;
jbe@85 170 do {
jbe@85 171 result = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@85 172 } while (result < 0 && (errno == EINTR));
jbe@85 173 if (result == 0 || (nonblocking && result < 0 && (errno == EAGAIN || errno == EWOULDBLOCK))) break;
jbe@85 174 if (result < 0) {
jbe@85 175 moonbr_io_errmsg();
jbe@85 176 handle->readerr = 1;
jbe@85 177 lua_pushnil(L);
jbe@85 178 lua_pushstring(L, errmsg);
jbe@85 179 return 2;
jbe@85 180 }
jbe@85 181 handle->readbufcnt += result;
jbe@85 182 }
jbe@86 183 if (!drain) {
jbe@86 184 luaL_addlstring(&luabuf, handle->readbuf, handle->readbufcnt);
jbe@86 185 luaL_pushresult(&luabuf);
jbe@86 186 }
jbe@90 187 luabufcnt += handle->readbufcnt;
jbe@85 188 handle->readbufcnt = 0;
jbe@90 189 if (!drain) {
jbe@90 190 if (!luabufcnt && result == 0) {
jbe@94 191 moonbr_io_read_impl_eof:
jbe@90 192 lua_pushboolean(L, 0);
jbe@90 193 lua_pushliteral(L, "End of file");
jbe@90 194 return 2;
jbe@90 195 }
jbe@90 196 } else {
jbe@90 197 if (!luabufcnt && result == 0) lua_pushboolean(L, 1);
jbe@90 198 else lua_pushboolean(L, luabufcnt);
jbe@90 199 }
jbe@85 200 return 1;
jbe@85 201 }
jbe@85 202
jbe@85 203 static int moonbr_io_read(lua_State *L) {
jbe@86 204 return moonbr_io_read_impl(L, 0, 0);
jbe@85 205 }
jbe@85 206
jbe@85 207 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 208 return moonbr_io_read_impl(L, 1, 0);
jbe@86 209 }
jbe@86 210
jbe@86 211 static int moonbr_io_drain(lua_State *L) {
jbe@86 212 return moonbr_io_read_impl(L, 0, 1);
jbe@86 213 }
jbe@86 214
jbe@86 215 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 216 return moonbr_io_read_impl(L, 1, 1);
jbe@85 217 }
jbe@85 218
jbe@81 219 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 220 moonbr_io_handle_t *handle;
jbe@80 221 int i, top;
jbe@80 222 const char *str;
jbe@92 223 size_t strlen;
jbe@80 224 size_t written;
jbe@80 225 ssize_t result;
jbe@80 226 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 227 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 228 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 229 if (handle->writeerr) {
jbe@80 230 lua_pushnil(L);
jbe@80 231 lua_pushliteral(L, "Previous write error");
jbe@80 232 return 2;
jbe@80 233 }
jbe@81 234 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 235 top = lua_gettop(L);
jbe@81 236 lua_getuservalue(L, 1);
jbe@81 237 lua_getfield(L, -1, "writebuf");
jbe@84 238 for (i=2; i<=top; i++) {
jbe@84 239 luaL_checklstring(L, i, &strlen);
jbe@84 240 lua_pushvalue(L, i);
jbe@84 241 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 242 handle->writeleft += strlen;
jbe@81 243 }
jbe@83 244 while (handle->writeqout != handle->writeqin) {
jbe@83 245 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 246 str = lua_tolstring(L, -1, &strlen);
jbe@92 247 while (handle->writeqoff < strlen) {
jbe@96 248 if (strlen - handle->writeqoff <= MOONBR_IO_WRITEBUFLEN - handle->writebufcnt) {
jbe@92 249 memcpy(handle->writebuf + handle->writebufcnt, str + handle->writeqoff, strlen - handle->writeqoff);
jbe@92 250 handle->writebufcnt += strlen - handle->writeqoff;
jbe@80 251 break;
jbe@80 252 } else {
jbe@97 253 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@80 254 written = 0;
jbe@92 255 memcpy(handle->writebuf + handle->writebufcnt, str + handle->writeqoff, MOONBR_IO_WRITEBUFLEN - handle->writebufcnt);
jbe@92 256 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufcnt;
jbe@80 257 while (written < MOONBR_IO_WRITEBUFLEN) {
jbe@80 258 result = write(handle->fd, handle->writebuf + written, MOONBR_IO_WRITEBUFLEN - written);
jbe@80 259 if (result < 0) {
jbe@81 260 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 261 if (written) {
jbe@81 262 handle->writebufcnt -= written;
jbe@81 263 memmove(handle->writebuf, handle->writebuf + written, handle->writebufcnt);
jbe@92 264 goto moonbr_io_write_impl_continue;
jbe@81 265 }
jbe@81 266 goto moonbr_io_write_impl_block;
jbe@81 267 } else if (errno != EINTR) {
jbe@80 268 moonbr_io_errmsg();
jbe@81 269 handle->writeerr = 1;
jbe@80 270 lua_pushnil(L);
jbe@80 271 lua_pushstring(L, errmsg);
jbe@80 272 return 2;
jbe@80 273 }
jbe@80 274 }
jbe@92 275 written += result;
jbe@92 276 handle->writeleft -= result;
jbe@80 277 }
jbe@81 278 handle->writebufcnt = 0;
jbe@80 279 }
jbe@92 280 moonbr_io_write_impl_continue:;
jbe@80 281 }
jbe@81 282 handle->writeqoff = 0;
jbe@81 283 lua_pop(L, 1);
jbe@81 284 lua_pushnil(L);
jbe@83 285 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 286 }
jbe@81 287 if (flush) {
jbe@97 288 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@81 289 written = 0;
jbe@81 290 while (written < handle->writebufcnt) {
jbe@81 291 result = write(handle->fd, handle->writebuf + written, handle->writebufcnt - written);
jbe@81 292 if (result < 0) {
jbe@81 293 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 294 if (written) {
jbe@81 295 handle->writebufcnt -= written;
jbe@81 296 memmove(handle->writebuf, handle->writebuf + written, handle->writebufcnt);
jbe@81 297 }
jbe@81 298 goto moonbr_io_write_impl_block;
jbe@81 299 } else if (errno != EINTR) {
jbe@81 300 moonbr_io_errmsg();
jbe@81 301 handle->writeerr = -1;
jbe@81 302 lua_pushnil(L);
jbe@81 303 lua_pushstring(L, errmsg);
jbe@81 304 return 2;
jbe@81 305 }
jbe@81 306 } else {
jbe@81 307 written += result;
jbe@81 308 handle->writeleft -= result;
jbe@81 309 }
jbe@81 310 }
jbe@81 311 handle->writebufcnt = 0;
jbe@82 312 if (nonblocking) lua_pushinteger(L, 0);
jbe@81 313 } else {
jbe@91 314 if (nonblocking) lua_pushinteger(L, handle->writeleft);
jbe@81 315 }
jbe@82 316 if (!nonblocking) lua_pushvalue(L, 1);
jbe@80 317 return 1;
jbe@81 318 moonbr_io_write_impl_block:
jbe@91 319 lua_pushinteger(L, handle->writeleft);
jbe@81 320 return 1;
jbe@81 321 }
jbe@81 322
jbe@81 323 static int moonbr_io_write(lua_State *L) {
jbe@81 324 return moonbr_io_write_impl(L, 0, 0);
jbe@81 325 }
jbe@81 326
jbe@81 327 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 328 return moonbr_io_write_impl(L, 1, 0);
jbe@80 329 }
jbe@80 330
jbe@80 331 static int moonbr_io_flush(lua_State *L) {
jbe@81 332 return moonbr_io_write_impl(L, 0, 1);
jbe@81 333 }
jbe@81 334
jbe@81 335 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 336 return moonbr_io_write_impl(L, 1, 1);
jbe@80 337 }
jbe@80 338
jbe@88 339 static int moonbr_io_finish(lua_State *L) {
jbe@88 340 moonbr_io_handle_t *handle;
jbe@88 341 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 342 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 343 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 344 if (handle->writeleft) {
jbe@94 345 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 346 lua_pushvalue(L, 1);
jbe@94 347 lua_call(L, 1, 2);
jbe@94 348 if (!lua_toboolean(L, -2)) {
jbe@94 349 handle->finished = 1;
jbe@94 350 return 2;
jbe@88 351 }
jbe@94 352 }
jbe@94 353 handle->finished = 1;
jbe@95 354 if (handle->isnetwork) {
jbe@88 355 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 356 moonbr_io_errmsg();
jbe@88 357 lua_pushnil(L);
jbe@88 358 lua_pushstring(L, errmsg);
jbe@88 359 return 2;
jbe@88 360 }
jbe@94 361 } else {
jbe@94 362 if (close(handle->fd)) {
jbe@94 363 moonbr_io_errmsg();
jbe@94 364 handle->fd = -1;
jbe@94 365 lua_pushnil(L);
jbe@94 366 lua_pushstring(L, errmsg);
jbe@94 367 return 2;
jbe@94 368 }
jbe@94 369 handle->fd = -1; /* fake EOF on read */
jbe@88 370 }
jbe@88 371 lua_pushboolean(L, 1);
jbe@88 372 return 1;
jbe@88 373 }
jbe@88 374
jbe@94 375 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 376 moonbr_io_handle_t *handle;
jbe@83 377 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 378 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 379 if (!reset) {
jbe@87 380 if (handle->writeleft) {
jbe@87 381 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 382 lua_pushvalue(L, 1);
jbe@87 383 lua_call(L, 1, 2);
jbe@87 384 if (!lua_toboolean(L, -2)) {
jbe@87 385 close(handle->fd);
jbe@87 386 handle->fd = -1;
jbe@87 387 return 2;
jbe@87 388 }
jbe@83 389 }
jbe@94 390 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 391 }
jbe@94 392 if (handle->fd >= 0) {
jbe@94 393 if (close(handle->fd)) {
jbe@94 394 moonbr_io_errmsg();
jbe@94 395 handle->fd = -1;
jbe@94 396 lua_pushnil(L);
jbe@94 397 lua_pushstring(L, errmsg);
jbe@94 398 return 2;
jbe@94 399 }
jbe@83 400 }
jbe@83 401 handle->fd = -1;
jbe@83 402 lua_pushboolean(L, 1);
jbe@83 403 return 1;
jbe@84 404
jbe@83 405 }
jbe@83 406
jbe@94 407 static int moonbr_io_close(lua_State *L) {
jbe@94 408 return moonbr_io_close_impl(L, 0);
jbe@94 409 }
jbe@94 410
jbe@84 411 static int moonbr_io_reset(lua_State *L) {
jbe@94 412 return moonbr_io_close_impl(L, 1);
jbe@84 413 }
jbe@84 414
jbe@88 415 static int moonbr_io_gc(lua_State *L) {
jbe@88 416 moonbr_io_handle_t *handle;
jbe@88 417 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 418 if (handle->fd >= 0) {
jbe@88 419 lua_pushcfunction(L, moonbr_io_close);
jbe@88 420 lua_pushvalue(L, 1);
jbe@88 421 lua_pushinteger(L, 0);
jbe@88 422 lua_call(L, 2, 0);
jbe@88 423 }
jbe@88 424 return 0;
jbe@88 425 }
jbe@88 426
jbe@100 427 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 428 moonbr_io_handle_t *handle;
jbe@88 429 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 430 if (!handle->closed) {
jbe@100 431 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 432 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 433 lua_call(L, 1, 0);
jbe@88 434 }
jbe@88 435 }
jbe@88 436
jbe@95 437 void moonbr_io_pushhandle(lua_State *L, int fd, int isnetwork) {
jbe@79 438 moonbr_io_handle_t *handle;
jbe@79 439 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 440 handle->fd = fd;
jbe@95 441 handle->isnetwork = isnetwork;
jbe@94 442 handle->finished = 0;
jbe@94 443 handle->closed = 0;
jbe@81 444 handle->nonblocking = -1;
jbe@95 445 handle->nopush = -1;
jbe@85 446 handle->readerr = 0;
jbe@85 447 handle->readbufcnt = 0;
jbe@81 448 handle->writeerr = 0;
jbe@81 449 handle->writeleft = 0;
jbe@83 450 handle->writeqin = 0;
jbe@83 451 handle->writeqout = 0;
jbe@81 452 handle->writeqoff = 0;
jbe@81 453 handle->writebufcnt = 0;
jbe@87 454 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 455 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 456 lua_setmetatable(L, -2);
jbe@79 457 lua_newtable(L); // uservalue
jbe@81 458 lua_newtable(L);
jbe@81 459 lua_setfield(L, -2, "writebuf");
jbe@79 460 lua_newtable(L); // public
jbe@79 461 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 462 lua_setmetatable(L, -2);
jbe@79 463 lua_setfield(L, -2, "public");
jbe@79 464 lua_setuservalue(L, -2);
jbe@79 465 }
jbe@79 466
jbe@79 467 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 468 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 469 lua_getuservalue(L, 1);
jbe@79 470 lua_getfield(L, -1, "public");
jbe@79 471 lua_pushvalue(L, 2);
jbe@79 472 lua_gettable(L, -2);
jbe@79 473 return 1;
jbe@79 474 }
jbe@79 475
jbe@79 476 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 477 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 478 lua_getuservalue(L, 1);
jbe@79 479 lua_getfield(L, -1, "public");
jbe@79 480 lua_pushvalue(L, 2);
jbe@79 481 lua_pushvalue(L, 3);
jbe@79 482 lua_settable(L, -3);
jbe@79 483 return 0;
jbe@79 484 }
jbe@79 485
jbe@99 486 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 487 const char *host, *port;
jbe@98 488 struct addrinfo hints = { 0, };
jbe@98 489 struct addrinfo *res, *addrinfo;
jbe@98 490 int errcode;
jbe@98 491 int sock;
jbe@98 492 host = luaL_checkstring(L, 1);
jbe@98 493 port = luaL_checkstring(L, 2);
jbe@98 494 hints.ai_family = AF_UNSPEC;
jbe@98 495 hints.ai_socktype = SOCK_STREAM;
jbe@98 496 hints.ai_protocol = IPPROTO_TCP;
jbe@98 497 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 498 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 499 if (errcode) {
jbe@98 500 if (errcode == EAI_SYSTEM) {
jbe@98 501 moonbr_io_errmsg();
jbe@98 502 lua_pushnil(L);
jbe@98 503 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 504 } else {
jbe@98 505 lua_pushnil(L);
jbe@98 506 lua_pushstring(L, gai_strerror(errcode));
jbe@98 507 }
jbe@98 508 return 2;
jbe@98 509 }
jbe@98 510 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@98 511 if (addrinfo->ai_family == PF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 512 }
jbe@98 513 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@98 514 if (addrinfo->ai_family == PF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 515 }
jbe@98 516 addrinfo = res;
jbe@98 517 moonbr_io_tcpconnect_found:
jbe@99 518 sock = socket(
jbe@99 519 addrinfo->ai_family,
jbe@99 520 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 521 addrinfo->ai_protocol
jbe@99 522 );
jbe@98 523 if (sock < 0) {
jbe@98 524 moonbr_io_errmsg();
jbe@98 525 lua_pushnil(L);
jbe@98 526 lua_pushstring(L, errmsg);
jbe@98 527 }
jbe@98 528 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@99 529 if (!nonblocking && errno == EINTR) {
jbe@99 530 moonbr_io_errmsg();
jbe@99 531 close(sock);
jbe@99 532 lua_pushnil(L);
jbe@99 533 lua_pushstring(L, errmsg);
jbe@99 534 return 2;
jbe@99 535 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 536 moonbr_io_errmsg();
jbe@99 537 lua_pushnil(L);
jbe@99 538 lua_pushstring(L, errmsg);
jbe@99 539 return 2;
jbe@99 540 }
jbe@98 541 }
jbe@98 542 moonbr_io_pushhandle(L, sock, 1);
jbe@98 543 return 1;
jbe@98 544 }
jbe@98 545
jbe@99 546 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 547 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 548 }
jbe@99 549
jbe@99 550 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 551 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 552 }
jbe@99 553
jbe@79 554 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 555 {"read", moonbr_io_read},
jbe@85 556 {"read_nb", moonbr_io_read_nb},
jbe@86 557 {"drain", moonbr_io_drain},
jbe@86 558 {"drain_nb", moonbr_io_drain_nb},
jbe@80 559 {"write", moonbr_io_write},
jbe@81 560 {"write_nb", moonbr_io_write_nb},
jbe@80 561 {"flush", moonbr_io_flush},
jbe@81 562 {"flush_nb", moonbr_io_flush_nb},
jbe@88 563 {"finish", moonbr_io_finish},
jbe@87 564 {"close", moonbr_io_close},
jbe@85 565 {"reset", moonbr_io_reset},
jbe@79 566 {NULL, NULL}
jbe@79 567 };
jbe@79 568
jbe@79 569 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 570 {"__index", moonbr_io_handleindex},
jbe@79 571 {"__newindex", moonbr_io_handlenewindex},
jbe@88 572 {"__gc", moonbr_io_gc},
jbe@79 573 {NULL, NULL}
jbe@79 574 };
jbe@79 575
jbe@79 576 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@98 577 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 578 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@79 579 {NULL, NULL}
jbe@79 580 };
jbe@79 581
jbe@79 582 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 583
jbe@80 584 lua_newtable(L); // module
jbe@80 585
jbe@79 586 lua_newtable(L); // public metatable
jbe@79 587 lua_newtable(L); // handle methods
jbe@79 588 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 589 lua_pushvalue(L, -1);
jbe@80 590 lua_setfield(L, -4, "handle");
jbe@79 591 lua_setfield(L, -2, "__index");
jbe@79 592 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 593
jbe@79 594 lua_newtable(L); // handle metatable
jbe@79 595 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 596 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 597
jbe@79 598 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 599 return 1;
jbe@79 600
jbe@79 601 }
jbe@79 602

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