moonbridge

annotate moonbridge_io.c @ 149:c820130f55d7

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New function moonbridge_io.run(...) as a "coroutine scheduler"
author jbe
date Fri May 08 03:18:07 2015 +0200 (2015-05-08)
parents c51c38d991df
children 2a5bd37034c6
rev   line source
jbe@79 1
jbe@137 2 #if defined(__linux__)
jbe@137 3 #define _GNU_SOURCE
jbe@137 4 #endif
jbe@79 5 #include <stdlib.h>
jbe@135 6 #include <stdint.h>
jbe@135 7 #include <string.h>
jbe@135 8 #include <errno.h>
jbe@79 9 #include <unistd.h>
jbe@135 10 #include <signal.h>
jbe@135 11 #include <fcntl.h>
jbe@135 12 #include <sys/stat.h>
jbe@79 13 #include <sys/socket.h>
jbe@111 14 #include <sys/un.h>
jbe@95 15 #include <netinet/in.h>
jbe@95 16 #include <netinet/tcp.h>
jbe@135 17 #include <sys/select.h>
jbe@136 18 #include <time.h>
jbe@135 19 #include <netdb.h>
jbe@107 20 #include <arpa/inet.h>
jbe@79 21
jbe@79 22 #include <lua.h>
jbe@79 23 #include <lauxlib.h>
jbe@79 24 #include <lualib.h>
jbe@79 25
jbe@149 26 #include <assert.h>
jbe@149 27
jbe@80 28 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 29 #define MOONBR_IO_READBUFLEN 4096
jbe@80 30 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 31
jbe@108 32 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 33
jbe@80 34 #define moonbr_io_errmsg() \
jbe@80 35 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 36 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 37
jbe@79 38 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 39 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 40 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@79 41
jbe@146 42 char moonbr_io_block_udata = 0;
jbe@149 43 char moonbr_io_multiblock_udata = 0;
jbe@146 44
jbe@79 45 typedef struct {
jbe@79 46 int fd;
jbe@107 47 int issock;
jbe@107 48 sa_family_t addrfam;
jbe@94 49 int finished;
jbe@94 50 int closed;
jbe@81 51 int nonblocking;
jbe@95 52 int nopush;
jbe@85 53 int readerr;
jbe@105 54 int readbufin;
jbe@105 55 int readbufout;
jbe@81 56 int writeerr;
jbe@83 57 size_t writeleft;
jbe@132 58 size_t flushedleft;
jbe@83 59 #if LUA_VERSION_NUM >= 503
jbe@83 60 lua_Integer writeqin;
jbe@83 61 lua_Integer writeqout;
jbe@83 62 #else
jbe@83 63 int writeqin;
jbe@83 64 int writeqout;
jbe@83 65 #endif
jbe@83 66 size_t writeqoff;
jbe@103 67 int writebufin;
jbe@103 68 int writebufout;
jbe@85 69 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 70 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 71 } moonbr_io_handle_t;
jbe@79 72
jbe@108 73 typedef struct {
jbe@108 74 int fd;
jbe@118 75 sa_family_t addrfam;
jbe@108 76 int nonblocking;
jbe@108 77 } moonbr_io_listener_t;
jbe@108 78
jbe@148 79 static int moonbr_io_yield(lua_State *L) {
jbe@149 80 return lua_yield(L, lua_gettop(L));
jbe@140 81 }
jbe@140 82
jbe@140 83 #if LUA_VERSION_NUM >= 503
jbe@140 84 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 85 #else
jbe@140 86 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 87 #endif
jbe@140 88 return lua_gettop(L);
jbe@140 89 }
jbe@140 90
jbe@145 91 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 92 static int yieldfunc(lua_State *L) { \
jbe@145 93 int args; \
jbe@145 94 lua_pushcfunction(L, callfunc); \
jbe@145 95 lua_insert(L, 1); \
jbe@145 96 args = lua_gettop(L); \
jbe@148 97 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 98 lua_insert(L, 3); \
jbe@145 99 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 100 return lua_gettop(L); \
jbe@145 101 }
jbe@145 102
jbe@81 103 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 104 int flags;
jbe@95 105 if (handle->nonblocking == nonblocking) return;
jbe@95 106 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@95 107 if (flags == -1) {
jbe@95 108 moonbr_io_errmsg();
jbe@96 109 close(handle->fd);
jbe@96 110 handle->fd = -1;
jbe@96 111 handle->closed = 1;
jbe@95 112 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 113 }
jbe@95 114 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 115 else flags &= ~O_NONBLOCK;
jbe@95 116 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@95 117 moonbr_io_errmsg();
jbe@96 118 close(handle->fd);
jbe@96 119 handle->fd = -1;
jbe@96 120 handle->closed = 1;
jbe@95 121 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@95 122 }
jbe@95 123 handle->nonblocking = nonblocking;
jbe@81 124 }
jbe@81 125
jbe@87 126 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 127 struct linger lingerval = { 0, };
jbe@107 128 if (!handle->issock) return;
jbe@87 129 if (timeout >= 0) {
jbe@87 130 lingerval.l_onoff = 1;
jbe@87 131 lingerval.l_linger = timeout;
jbe@87 132 }
jbe@87 133 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 134 moonbr_io_errmsg();
jbe@96 135 close(handle->fd);
jbe@96 136 handle->fd = -1;
jbe@96 137 handle->closed = 1;
jbe@95 138 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@87 139 }
jbe@87 140 }
jbe@87 141
jbe@133 142 static inline void moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 143 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 144 if (
jbe@107 145 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 146 handle->nopush == nopush
jbe@107 147 ) return;
jbe@96 148 #if defined(TCP_NOPUSH)
jbe@96 149 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) {
jbe@104 150 #elif defined(TCP_CORK)
jbe@104 151 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) {
jbe@104 152 #endif
jbe@96 153 moonbr_io_errmsg();
jbe@96 154 close(handle->fd);
jbe@96 155 handle->fd = -1;
jbe@96 156 handle->closed = 1;
jbe@104 157 #if defined(TCP_NOPUSH)
jbe@96 158 luaL_error(L, "Unexpected error while setting TCP_NOPUSH with setsockopt: %s", errmsg);
jbe@96 159 #elif defined(TCP_CORK)
jbe@95 160 luaL_error(L, "Unexpected error while setting TCP_CORK with setsockopt: %s", errmsg);
jbe@104 161 #endif
jbe@95 162 }
jbe@95 163 handle->nopush = nopush;
jbe@96 164 #else
jbe@96 165 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 166 #endif
jbe@95 167 }
jbe@95 168
jbe@86 169 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 170 moonbr_io_handle_t *handle;
jbe@85 171 lua_Integer maxread;
jbe@85 172 const char *terminatorstr;
jbe@85 173 size_t terminatorlen;
jbe@137 174 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 175 luaL_Buffer luabuf;
jbe@85 176 size_t luabufcnt = 0;
jbe@105 177 int remaining;
jbe@85 178 char *terminatorpos;
jbe@103 179 ssize_t bytesread;
jbe@85 180 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 181 maxread = luaL_optinteger(L, 2, 0);
jbe@85 182 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 183 if (terminatorlen) {
jbe@85 184 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 185 terminator = terminatorstr[0];
jbe@85 186 }
jbe@86 187 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 188 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 189 if (handle->readerr) {
jbe@85 190 lua_pushnil(L);
jbe@85 191 lua_pushliteral(L, "Previous read error");
jbe@85 192 return 2;
jbe@85 193 }
jbe@143 194 if (handle->fd < 0) {
jbe@143 195 /* fake EOF to simulate shutdown */
jbe@143 196 if (!drain) lua_pushliteral(L, "");
jbe@143 197 else lua_pushinteger(L, 0);
jbe@143 198 lua_pushliteral(L, "eof");
jbe@143 199 return 2;
jbe@143 200 }
jbe@105 201 handle->readerr = 1;
jbe@85 202 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 203 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 204 while (1) {
jbe@105 205 remaining = -1;
jbe@142 206 terminatorpos = NULL;
jbe@105 207 if (
jbe@105 208 maxread > 0 &&
jbe@143 209 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 210 ) {
jbe@142 211 remaining = (size_t)maxread - luabufcnt;
jbe@142 212 terminatorpos = memchr(
jbe@142 213 handle->readbuf + handle->readbufout,
jbe@142 214 terminator,
jbe@142 215 remaining
jbe@142 216 );
jbe@85 217 } else if (terminatorlen) {
jbe@105 218 terminatorpos = memchr(
jbe@105 219 handle->readbuf + handle->readbufout,
jbe@105 220 terminator,
jbe@105 221 handle->readbufin - handle->readbufout
jbe@105 222 );
jbe@85 223 }
jbe@142 224 if (terminatorpos) remaining = 1 + (
jbe@142 225 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 226 );
jbe@105 227 if (remaining >= 0) {
jbe@86 228 if (!drain) {
jbe@105 229 luaL_addlstring(
jbe@105 230 &luabuf,
jbe@105 231 handle->readbuf + handle->readbufout,
jbe@105 232 remaining
jbe@105 233 );
jbe@86 234 luaL_pushresult(&luabuf);
jbe@90 235 } else {
jbe@105 236 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 237 }
jbe@143 238 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 239 else lua_pushliteral(L, "maxlen");
jbe@105 240 handle->readbufout += remaining;
jbe@105 241 if (handle->readbufout == handle->readbufin) {
jbe@105 242 handle->readbufin = 0;
jbe@143 243 handle->readbufout = 0;
jbe@105 244 }
jbe@104 245 handle->readerr = 0;
jbe@143 246 return 2;
jbe@85 247 }
jbe@105 248 if (!drain) luaL_addlstring(
jbe@105 249 &luabuf,
jbe@105 250 handle->readbuf + handle->readbufout,
jbe@105 251 handle->readbufin - handle->readbufout
jbe@105 252 );
jbe@105 253 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 254 handle->readbufout = 0;
jbe@85 255 do {
jbe@103 256 bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@103 257 } while (bytesread < 0 && (errno == EINTR));
jbe@105 258 if (
jbe@105 259 bytesread == 0 || (
jbe@105 260 nonblocking &&
jbe@105 261 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 262 )
jbe@105 263 ) {
jbe@105 264 handle->readbufin = 0;
jbe@143 265 if (!drain) luaL_pushresult(&luabuf);
jbe@143 266 else lua_pushinteger(L, luabufcnt);
jbe@143 267 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 268 else lua_pushliteral(L, "block");
jbe@105 269 handle->readerr = 0;
jbe@143 270 return 2;
jbe@105 271 }
jbe@103 272 if (bytesread < 0) {
jbe@85 273 moonbr_io_errmsg();
jbe@85 274 lua_pushnil(L);
jbe@85 275 lua_pushstring(L, errmsg);
jbe@85 276 return 2;
jbe@85 277 }
jbe@105 278 handle->readbufin = bytesread;
jbe@86 279 }
jbe@85 280 }
jbe@85 281
jbe@85 282 static int moonbr_io_read(lua_State *L) {
jbe@86 283 return moonbr_io_read_impl(L, 0, 0);
jbe@85 284 }
jbe@85 285
jbe@85 286 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 287 return moonbr_io_read_impl(L, 1, 0);
jbe@86 288 }
jbe@86 289
jbe@86 290 static int moonbr_io_drain(lua_State *L) {
jbe@86 291 return moonbr_io_read_impl(L, 0, 1);
jbe@86 292 }
jbe@86 293
jbe@86 294 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 295 return moonbr_io_read_impl(L, 1, 1);
jbe@85 296 }
jbe@85 297
jbe@140 298 #if LUA_VERSION_NUM >= 503
jbe@140 299 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 300 #else
jbe@140 301 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 302 #endif
jbe@143 303 lua_Integer remaining;
jbe@143 304 size_t len;
jbe@140 305 #if !(LUA_VERSION_NUM >= 503)
jbe@140 306 int ctx = 0;
jbe@140 307 lua_getctx(L, &ctx);
jbe@140 308 #endif
jbe@140 309 remaining = lua_tointeger(L, 3);
jbe@140 310 while (1) {
jbe@140 311 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 312 lua_pushvalue(L, 1);
jbe@140 313 lua_pushvalue(L, 3);
jbe@140 314 lua_pushvalue(L, 4);
jbe@140 315 lua_call(L, 3, 2);
jbe@143 316 if (lua_isnil(L, -2)) return 2;
jbe@143 317 lua_insert(L, -2);
jbe@143 318 len = lua_rawlen(L, -1);
jbe@143 319 if (ctx == 0) {
jbe@143 320 lua_replace(L, 5);
jbe@143 321 ctx = 1;
jbe@143 322 } else if (ctx == 1) {
jbe@143 323 lua_pushvalue(L, 5);
jbe@143 324 lua_newtable(L);
jbe@143 325 lua_replace(L, 5);
jbe@143 326 lua_rawseti(L, 5, 2);
jbe@143 327 lua_rawseti(L, 5, 1);
jbe@143 328 ctx = 2;
jbe@140 329 } else {
jbe@143 330 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 331 }
jbe@144 332 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 333 lua_pop(L, 1);
jbe@144 334 if (remaining >= 0 && len) {
jbe@143 335 remaining -= len;
jbe@143 336 lua_pushinteger(L, remaining);
jbe@143 337 lua_replace(L, 3);
jbe@143 338 }
jbe@140 339 lua_pushvalue(L, 2);
jbe@148 340 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@140 341 lua_pushvalue(L, 1);
jbe@140 342 lua_pushliteral(L, "r");
jbe@148 343 lua_callk(L, 3, 0, ctx, moonbr_io_read_cont);
jbe@140 344 }
jbe@140 345 if (ctx == 1) {
jbe@140 346 lua_pushvalue(L, 5);
jbe@140 347 } else {
jbe@140 348 luaL_Buffer buf;
jbe@140 349 lua_Integer i, chunkcount;
jbe@140 350 chunkcount = lua_rawlen(L, 5);
jbe@140 351 luaL_buffinit(L, &buf);
jbe@140 352 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 353 lua_rawgeti(L, 5, i);
jbe@140 354 luaL_addvalue(&buf);
jbe@140 355 }
jbe@140 356 luaL_pushresult(&buf);
jbe@140 357 }
jbe@143 358 lua_pushvalue(L, -2);
jbe@143 359 return 2;
jbe@140 360 }
jbe@140 361
jbe@140 362 static int moonbr_io_read_call(lua_State *L) {
jbe@140 363 lua_settop(L, 4);
jbe@140 364 lua_pushnil(L);
jbe@140 365 #if LUA_VERSION_NUM >= 503
jbe@140 366 return moonbr_io_read_cont(L, 0, 0);
jbe@140 367 #else
jbe@140 368 return moonbr_io_read_cont(L);
jbe@140 369 #endif
jbe@140 370 }
jbe@140 371
jbe@145 372 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 373
jbe@144 374 #if LUA_VERSION_NUM >= 503
jbe@144 375 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 376 #else
jbe@144 377 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 378 #endif
jbe@144 379 lua_Integer remaining, len;
jbe@144 380 size_t totallen = 0;
jbe@144 381 #if !(LUA_VERSION_NUM >= 503)
jbe@144 382 int ctx = 0;
jbe@144 383 lua_getctx(L, &ctx);
jbe@144 384 #endif
jbe@144 385 remaining = lua_tointeger(L, 3);
jbe@144 386 while (1) {
jbe@144 387 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 388 lua_pushvalue(L, 1);
jbe@144 389 lua_pushvalue(L, 3);
jbe@144 390 lua_pushvalue(L, 4);
jbe@144 391 lua_call(L, 3, 2);
jbe@144 392 if (lua_isnil(L, -2)) return 2;
jbe@144 393 lua_insert(L, -2);
jbe@144 394 len = lua_tointeger(L, -1);
jbe@144 395 lua_pop(L, 1);
jbe@144 396 totallen += len;
jbe@144 397 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 398 lua_pop(L, 1);
jbe@144 399 if (remaining >= 0 && len) {
jbe@144 400 remaining -= len;
jbe@144 401 lua_pushinteger(L, remaining);
jbe@144 402 lua_replace(L, 3);
jbe@144 403 }
jbe@144 404 lua_pushvalue(L, 2);
jbe@148 405 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@144 406 lua_pushvalue(L, 1);
jbe@144 407 lua_pushliteral(L, "r");
jbe@148 408 lua_callk(L, 3, 0, ctx, moonbr_io_drain_cont);
jbe@144 409 }
jbe@144 410 lua_pushinteger(L, totallen);
jbe@144 411 lua_pushvalue(L, -2);
jbe@144 412 return 2;
jbe@144 413 }
jbe@144 414
jbe@144 415 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 416 #if LUA_VERSION_NUM >= 503
jbe@144 417 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 418 #else
jbe@144 419 return moonbr_io_drain_cont(L);
jbe@144 420 #endif
jbe@144 421 }
jbe@144 422
jbe@145 423 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 424
jbe@81 425 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 426 moonbr_io_handle_t *handle;
jbe@80 427 int i, top;
jbe@80 428 const char *str;
jbe@92 429 size_t strlen;
jbe@103 430 ssize_t written;
jbe@80 431 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 432 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 433 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 434 if (handle->writeerr) {
jbe@80 435 lua_pushnil(L);
jbe@80 436 lua_pushliteral(L, "Previous write error");
jbe@80 437 return 2;
jbe@80 438 }
jbe@103 439 handle->writeerr = 1;
jbe@81 440 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 441 top = lua_gettop(L);
jbe@81 442 lua_getuservalue(L, 1);
jbe@103 443 lua_getfield(L, -1, "writequeue");
jbe@84 444 for (i=2; i<=top; i++) {
jbe@84 445 luaL_checklstring(L, i, &strlen);
jbe@84 446 lua_pushvalue(L, i);
jbe@84 447 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 448 handle->writeleft += strlen;
jbe@81 449 }
jbe@132 450 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 451 while (handle->writeqout != handle->writeqin) {
jbe@83 452 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 453 str = lua_tolstring(L, -1, &strlen);
jbe@92 454 while (handle->writeqoff < strlen) {
jbe@103 455 if (
jbe@132 456 strlen - handle->writeqoff <
jbe@103 457 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 458 ) {
jbe@103 459 memcpy(
jbe@103 460 handle->writebuf + handle->writebufin,
jbe@103 461 str + handle->writeqoff,
jbe@103 462 strlen - handle->writeqoff
jbe@103 463 );
jbe@103 464 handle->writebufin += strlen - handle->writeqoff;
jbe@80 465 break;
jbe@80 466 } else {
jbe@103 467 memcpy(
jbe@103 468 handle->writebuf + handle->writebufin,
jbe@103 469 str + handle->writeqoff,
jbe@103 470 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 471 );
jbe@103 472 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@103 473 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@133 474 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@103 475 written = write(
jbe@103 476 handle->fd,
jbe@103 477 handle->writebuf + handle->writebufout,
jbe@103 478 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 479 );
jbe@103 480 if (written < 0) {
jbe@81 481 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 482 goto moonbr_io_write_impl_block;
jbe@81 483 } else if (errno != EINTR) {
jbe@80 484 moonbr_io_errmsg();
jbe@80 485 lua_pushnil(L);
jbe@80 486 lua_pushstring(L, errmsg);
jbe@80 487 return 2;
jbe@80 488 }
jbe@103 489 } else {
jbe@103 490 handle->writebufout += written;
jbe@103 491 handle->writeleft -= written;
jbe@133 492 if (handle->flushedleft) {
jbe@133 493 if (written >= handle->flushedleft) {
jbe@133 494 handle->flushedleft = 0;
jbe@133 495 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 496 } else {
jbe@133 497 handle->flushedleft -= written;
jbe@133 498 }
jbe@133 499 }
jbe@80 500 }
jbe@80 501 }
jbe@103 502 handle->writebufin = 0;
jbe@103 503 handle->writebufout = 0;
jbe@80 504 }
jbe@80 505 }
jbe@81 506 handle->writeqoff = 0;
jbe@81 507 lua_pop(L, 1);
jbe@81 508 lua_pushnil(L);
jbe@83 509 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 510 }
jbe@132 511 while (handle->flushedleft) {
jbe@133 512 moonbr_io_handle_set_nopush(L, handle, 1);
jbe@132 513 written = write(
jbe@132 514 handle->fd,
jbe@132 515 handle->writebuf + handle->writebufout,
jbe@132 516 handle->writebufin - handle->writebufout
jbe@132 517 );
jbe@132 518 if (written < 0) {
jbe@132 519 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 520 goto moonbr_io_write_impl_block;
jbe@132 521 } else if (errno != EINTR) {
jbe@132 522 moonbr_io_errmsg();
jbe@132 523 lua_pushnil(L);
jbe@132 524 lua_pushstring(L, errmsg);
jbe@132 525 return 2;
jbe@81 526 }
jbe@132 527 } else {
jbe@132 528 handle->writebufout += written;
jbe@132 529 handle->writeleft -= written;
jbe@133 530 if (handle->flushedleft) {
jbe@133 531 if (written >= handle->flushedleft) {
jbe@133 532 handle->flushedleft = 0;
jbe@133 533 moonbr_io_handle_set_nopush(L, handle, 0);
jbe@133 534 } else {
jbe@133 535 handle->flushedleft -= written;
jbe@133 536 }
jbe@133 537 }
jbe@81 538 }
jbe@132 539 }
jbe@132 540 if (handle->writebufout == handle->writebufin) {
jbe@103 541 handle->writebufin = 0;
jbe@103 542 handle->writebufout = 0;
jbe@81 543 }
jbe@103 544 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 545 else lua_pushvalue(L, 1);
jbe@103 546 handle->writeerr = 0;
jbe@80 547 return 1;
jbe@81 548 moonbr_io_write_impl_block:
jbe@91 549 lua_pushinteger(L, handle->writeleft);
jbe@103 550 handle->writeerr = 0;
jbe@81 551 return 1;
jbe@81 552 }
jbe@81 553
jbe@81 554 static int moonbr_io_write(lua_State *L) {
jbe@81 555 return moonbr_io_write_impl(L, 0, 0);
jbe@81 556 }
jbe@81 557
jbe@81 558 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 559 return moonbr_io_write_impl(L, 1, 0);
jbe@80 560 }
jbe@80 561
jbe@80 562 static int moonbr_io_flush(lua_State *L) {
jbe@81 563 return moonbr_io_write_impl(L, 0, 1);
jbe@81 564 }
jbe@81 565
jbe@81 566 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 567 return moonbr_io_write_impl(L, 1, 1);
jbe@80 568 }
jbe@80 569
jbe@145 570 #if LUA_VERSION_NUM >= 503
jbe@145 571 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 572 #else
jbe@145 573 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 574 #endif
jbe@145 575 while (1) {
jbe@145 576 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 577 lua_pushvalue(L, 1);
jbe@145 578 lua_call(L, 1, 2);
jbe@145 579 if (lua_isnil(L, -2)) return 2;
jbe@145 580 if (!lua_tointeger(L, -2)) {
jbe@145 581 lua_pushvalue(L, 1);
jbe@145 582 return 1;
jbe@145 583 }
jbe@145 584 lua_pop(L, 2);
jbe@145 585 lua_pushvalue(L, 2);
jbe@148 586 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@145 587 lua_pushvalue(L, 1);
jbe@145 588 lua_pushliteral(L, "w");
jbe@148 589 lua_callk(L, 3, 0, 0, moonbr_io_write_cont);
jbe@145 590 }
jbe@145 591 }
jbe@145 592
jbe@145 593 static int moonbr_io_write_call(lua_State *L) {
jbe@145 594 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 595 lua_insert(L, 3);
jbe@145 596 lua_pushvalue(L, 1);
jbe@145 597 lua_insert(L, 4);
jbe@145 598 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 599 if (lua_isnil(L, -2)) return 2;
jbe@145 600 if (!lua_tointeger(L, -2)) {
jbe@145 601 lua_pushvalue(L, 1);
jbe@145 602 return 1;
jbe@145 603 }
jbe@145 604 #if LUA_VERSION_NUM >= 503
jbe@145 605 return moonbr_io_write_cont(L, 0, 0);
jbe@145 606 #else
jbe@145 607 return moonbr_io_write_cont(L);
jbe@145 608 #endif
jbe@145 609 }
jbe@145 610
jbe@145 611 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 612
jbe@145 613 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 614 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 615 lua_insert(L, 3);
jbe@145 616 lua_pushvalue(L, 1);
jbe@145 617 lua_insert(L, 4);
jbe@145 618 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 619 if (lua_isnil(L, -2)) return 2;
jbe@145 620 if (!lua_tointeger(L, -2)) {
jbe@145 621 lua_pushvalue(L, 1);
jbe@145 622 return 1;
jbe@145 623 }
jbe@145 624 #if LUA_VERSION_NUM >= 503
jbe@145 625 return moonbr_io_write_cont(L, 0, 0);
jbe@145 626 #else
jbe@145 627 return moonbr_io_write_cont(L);
jbe@145 628 #endif
jbe@145 629 }
jbe@145 630
jbe@145 631 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 632
jbe@88 633 static int moonbr_io_finish(lua_State *L) {
jbe@88 634 moonbr_io_handle_t *handle;
jbe@88 635 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 636 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 637 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 638 if (handle->writeleft) {
jbe@94 639 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 640 lua_pushvalue(L, 1);
jbe@116 641 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 642 handle->finished = 1;
jbe@116 643 lua_error(L);
jbe@116 644 }
jbe@94 645 if (!lua_toboolean(L, -2)) {
jbe@94 646 handle->finished = 1;
jbe@94 647 return 2;
jbe@88 648 }
jbe@94 649 }
jbe@94 650 handle->finished = 1;
jbe@107 651 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@88 652 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 653 moonbr_io_errmsg();
jbe@88 654 lua_pushnil(L);
jbe@88 655 lua_pushstring(L, errmsg);
jbe@88 656 return 2;
jbe@88 657 }
jbe@94 658 } else {
jbe@94 659 if (close(handle->fd)) {
jbe@94 660 moonbr_io_errmsg();
jbe@94 661 handle->fd = -1;
jbe@94 662 lua_pushnil(L);
jbe@94 663 lua_pushstring(L, errmsg);
jbe@94 664 return 2;
jbe@94 665 }
jbe@94 666 handle->fd = -1; /* fake EOF on read */
jbe@88 667 }
jbe@88 668 lua_pushboolean(L, 1);
jbe@88 669 return 1;
jbe@88 670 }
jbe@88 671
jbe@94 672 static int moonbr_io_close_impl(lua_State *L, int reset) {
jbe@83 673 moonbr_io_handle_t *handle;
jbe@83 674 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 675 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@94 676 if (!reset) {
jbe@87 677 if (handle->writeleft) {
jbe@87 678 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 679 lua_pushvalue(L, 1);
jbe@116 680 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 681 handle->closed = 1;
jbe@116 682 close(handle->fd);
jbe@116 683 handle->fd = -1;
jbe@116 684 lua_error(L);
jbe@116 685 }
jbe@129 686 handle->closed = 1;
jbe@87 687 if (!lua_toboolean(L, -2)) {
jbe@87 688 close(handle->fd);
jbe@87 689 handle->fd = -1;
jbe@87 690 return 2;
jbe@87 691 }
jbe@129 692 } else {
jbe@129 693 handle->closed = 1;
jbe@129 694 moonbr_io_handle_set_linger(L, handle, -1);
jbe@83 695 }
jbe@129 696 } else {
jbe@129 697 handle->closed = 1;
jbe@83 698 }
jbe@94 699 if (handle->fd >= 0) {
jbe@94 700 if (close(handle->fd)) {
jbe@94 701 moonbr_io_errmsg();
jbe@94 702 handle->fd = -1;
jbe@94 703 lua_pushnil(L);
jbe@94 704 lua_pushstring(L, errmsg);
jbe@94 705 return 2;
jbe@94 706 }
jbe@104 707 handle->fd = -1;
jbe@83 708 }
jbe@83 709 lua_pushboolean(L, 1);
jbe@83 710 return 1;
jbe@84 711
jbe@83 712 }
jbe@83 713
jbe@94 714 static int moonbr_io_close(lua_State *L) {
jbe@94 715 return moonbr_io_close_impl(L, 0);
jbe@94 716 }
jbe@94 717
jbe@84 718 static int moonbr_io_reset(lua_State *L) {
jbe@94 719 return moonbr_io_close_impl(L, 1);
jbe@84 720 }
jbe@84 721
jbe@108 722 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 723 moonbr_io_handle_t *handle;
jbe@88 724 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 725 if (handle->fd >= 0) {
jbe@88 726 lua_pushcfunction(L, moonbr_io_close);
jbe@88 727 lua_pushvalue(L, 1);
jbe@88 728 lua_pushinteger(L, 0);
jbe@88 729 lua_call(L, 2, 0);
jbe@88 730 }
jbe@88 731 return 0;
jbe@88 732 }
jbe@88 733
jbe@100 734 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 735 moonbr_io_handle_t *handle;
jbe@88 736 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 737 if (!handle->closed) {
jbe@100 738 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 739 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 740 lua_call(L, 1, 0);
jbe@88 741 }
jbe@88 742 }
jbe@88 743
jbe@107 744 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@79 745 moonbr_io_handle_t *handle;
jbe@107 746 struct sockaddr addr;
jbe@107 747 socklen_t addrlen;
jbe@79 748 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 749 handle->fd = fd;
jbe@107 750 addrlen = sizeof(addr);
jbe@107 751 if (getsockname(fd, &addr, &addrlen)) {
jbe@107 752 if (errno != ENOTSOCK) {
jbe@107 753 moonbr_io_errmsg();
jbe@107 754 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 755 }
jbe@107 756 handle->issock = 0;
jbe@107 757 } else {
jbe@107 758 handle->issock = 1;
jbe@107 759 handle->addrfam = addr.sa_family;
jbe@107 760 }
jbe@94 761 handle->finished = 0;
jbe@94 762 handle->closed = 0;
jbe@81 763 handle->nonblocking = -1;
jbe@95 764 handle->nopush = -1;
jbe@85 765 handle->readerr = 0;
jbe@105 766 handle->readbufin = 0;
jbe@105 767 handle->readbufout = 0;
jbe@81 768 handle->writeerr = 0;
jbe@81 769 handle->writeleft = 0;
jbe@132 770 handle->flushedleft = 0;
jbe@83 771 handle->writeqin = 0;
jbe@83 772 handle->writeqout = 0;
jbe@81 773 handle->writeqoff = 0;
jbe@103 774 handle->writebufin = 0;
jbe@103 775 handle->writebufout = 0;
jbe@87 776 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 777 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 778 lua_setmetatable(L, -2);
jbe@79 779 lua_newtable(L); // uservalue
jbe@81 780 lua_newtable(L);
jbe@103 781 lua_setfield(L, -2, "writequeue");
jbe@79 782 lua_newtable(L); // public
jbe@107 783 if (handle->addrfam == AF_INET6) {
jbe@107 784 struct sockaddr_in6 addr_in6;
jbe@107 785 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 786 const char *addrstr;
jbe@107 787 addrlen = sizeof(addr_in6);
jbe@107 788 if (getsockname(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 789 moonbr_io_errmsg();
jbe@107 790 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 791 }
jbe@107 792 if (addrlen > sizeof(addr_in6)) {
jbe@107 793 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 794 }
jbe@107 795 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 796 if (!addrstr) {
jbe@107 797 moonbr_io_errmsg();
jbe@107 798 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 799 } else {
jbe@107 800 lua_pushstring(L, addrstr);
jbe@107 801 lua_setfield(L, -2, "local_ip6");
jbe@107 802 }
jbe@107 803 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 804 lua_setfield(L, -2, "local_tcpport");
jbe@107 805 if (getpeername(fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@107 806 moonbr_io_errmsg();
jbe@107 807 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 808 }
jbe@107 809 if (addrlen > sizeof(addr_in6)) {
jbe@107 810 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 811 }
jbe@107 812 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 813 if (!addrstr) {
jbe@107 814 moonbr_io_errmsg();
jbe@107 815 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 816 } else {
jbe@107 817 lua_pushstring(L, addrstr);
jbe@107 818 lua_setfield(L, -2, "remote_ip6");
jbe@107 819 }
jbe@107 820 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 821 lua_setfield(L, -2, "remote_tcpport");
jbe@107 822 } else if (handle->addrfam == AF_INET) {
jbe@107 823 struct sockaddr_in addr_in;
jbe@107 824 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 825 const char *addrstr;
jbe@107 826 addrlen = sizeof(addr_in);
jbe@107 827 if (getsockname(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 828 moonbr_io_errmsg();
jbe@107 829 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 830 }
jbe@107 831 if (addrlen > sizeof(addr_in)) {
jbe@107 832 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 833 }
jbe@107 834 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 835 if (!addrstr) {
jbe@107 836 moonbr_io_errmsg();
jbe@107 837 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 838 } else {
jbe@107 839 lua_pushstring(L, addrstr);
jbe@107 840 lua_setfield(L, -2, "local_ip4");
jbe@107 841 }
jbe@107 842 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 843 lua_setfield(L, -2, "local_tcpport");
jbe@107 844 if (getpeername(fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@107 845 moonbr_io_errmsg();
jbe@107 846 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 847 }
jbe@107 848 if (addrlen > sizeof(addr_in)) {
jbe@107 849 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 850 }
jbe@107 851 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 852 if (!addrstr) {
jbe@107 853 moonbr_io_errmsg();
jbe@107 854 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 855 } else {
jbe@107 856 lua_pushstring(L, addrstr);
jbe@107 857 lua_setfield(L, -2, "remote_ip4");
jbe@107 858 }
jbe@107 859 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 860 lua_setfield(L, -2, "remote_tcpport");
jbe@107 861 }
jbe@79 862 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 863 lua_setmetatable(L, -2);
jbe@79 864 lua_setfield(L, -2, "public");
jbe@79 865 lua_setuservalue(L, -2);
jbe@79 866 }
jbe@79 867
jbe@79 868 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 869 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 870 lua_getuservalue(L, 1);
jbe@79 871 lua_getfield(L, -1, "public");
jbe@79 872 lua_pushvalue(L, 2);
jbe@79 873 lua_gettable(L, -2);
jbe@79 874 return 1;
jbe@79 875 }
jbe@79 876
jbe@79 877 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 878 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 879 lua_getuservalue(L, 1);
jbe@79 880 lua_getfield(L, -1, "public");
jbe@79 881 lua_pushvalue(L, 2);
jbe@79 882 lua_pushvalue(L, 3);
jbe@79 883 lua_settable(L, -3);
jbe@79 884 return 0;
jbe@79 885 }
jbe@79 886
jbe@111 887 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 888 const char *path;
jbe@111 889 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 890 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 891 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 892 ) - 1; /* one byte for termination */
jbe@111 893 int sock;
jbe@111 894 path = luaL_checkstring(L, 1);
jbe@111 895 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 896 strcpy(sockaddr.sun_path, path);
jbe@111 897 sock = socket(
jbe@111 898 PF_LOCAL,
jbe@111 899 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 900 0
jbe@111 901 );
jbe@111 902 if (sock < 0) {
jbe@111 903 moonbr_io_errmsg();
jbe@111 904 lua_pushnil(L);
jbe@111 905 lua_pushstring(L, errmsg);
jbe@111 906 return 2;
jbe@111 907 }
jbe@111 908 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 909 if (!nonblocking && errno == EINTR) {
jbe@111 910 moonbr_io_errmsg();
jbe@111 911 close(sock);
jbe@111 912 lua_pushnil(L);
jbe@111 913 lua_pushstring(L, errmsg);
jbe@111 914 return 2;
jbe@111 915 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@111 916 moonbr_io_errmsg();
jbe@111 917 lua_pushnil(L);
jbe@111 918 lua_pushstring(L, errmsg);
jbe@111 919 return 2;
jbe@111 920 }
jbe@111 921 }
jbe@111 922 moonbr_io_pushhandle(L, sock);
jbe@111 923 return 1;
jbe@111 924 }
jbe@111 925
jbe@111 926 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 927 return moonbr_io_localconnect_impl(L, 0);
jbe@111 928 }
jbe@111 929
jbe@111 930 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 931 return moonbr_io_localconnect_impl(L, 1);
jbe@111 932 }
jbe@111 933
jbe@99 934 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 935 const char *host, *port;
jbe@98 936 struct addrinfo hints = { 0, };
jbe@98 937 struct addrinfo *res, *addrinfo;
jbe@98 938 int errcode;
jbe@98 939 int sock;
jbe@98 940 host = luaL_checkstring(L, 1);
jbe@98 941 port = luaL_checkstring(L, 2);
jbe@98 942 hints.ai_family = AF_UNSPEC;
jbe@98 943 hints.ai_socktype = SOCK_STREAM;
jbe@98 944 hints.ai_protocol = IPPROTO_TCP;
jbe@98 945 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 946 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 947 if (errcode) {
jbe@102 948 freeaddrinfo(res);
jbe@98 949 if (errcode == EAI_SYSTEM) {
jbe@98 950 moonbr_io_errmsg();
jbe@98 951 lua_pushnil(L);
jbe@98 952 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 953 } else {
jbe@98 954 lua_pushnil(L);
jbe@98 955 lua_pushstring(L, gai_strerror(errcode));
jbe@98 956 }
jbe@98 957 return 2;
jbe@98 958 }
jbe@98 959 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 960 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 961 }
jbe@98 962 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 963 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 964 }
jbe@98 965 addrinfo = res;
jbe@98 966 moonbr_io_tcpconnect_found:
jbe@99 967 sock = socket(
jbe@134 968 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 969 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 970 addrinfo->ai_protocol
jbe@99 971 );
jbe@98 972 if (sock < 0) {
jbe@98 973 moonbr_io_errmsg();
jbe@108 974 freeaddrinfo(res);
jbe@98 975 lua_pushnil(L);
jbe@98 976 lua_pushstring(L, errmsg);
jbe@108 977 return 2;
jbe@98 978 }
jbe@98 979 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 980 freeaddrinfo(res);
jbe@99 981 if (!nonblocking && errno == EINTR) {
jbe@99 982 moonbr_io_errmsg();
jbe@99 983 close(sock);
jbe@99 984 lua_pushnil(L);
jbe@99 985 lua_pushstring(L, errmsg);
jbe@99 986 return 2;
jbe@99 987 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) {
jbe@99 988 moonbr_io_errmsg();
jbe@99 989 lua_pushnil(L);
jbe@99 990 lua_pushstring(L, errmsg);
jbe@99 991 return 2;
jbe@99 992 }
jbe@108 993 } else {
jbe@108 994 freeaddrinfo(res);
jbe@98 995 }
jbe@107 996 moonbr_io_pushhandle(L, sock);
jbe@98 997 return 1;
jbe@98 998 }
jbe@98 999
jbe@99 1000 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1001 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1002 }
jbe@99 1003
jbe@99 1004 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1005 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1006 }
jbe@99 1007
jbe@112 1008 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1009 moonbr_io_listener_t *listener;
jbe@112 1010 const char *path;
jbe@118 1011 struct stat sb;
jbe@112 1012 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1013 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1014 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1015 ) - 1; /* one byte for termination */
jbe@112 1016 int sock;
jbe@112 1017 path = luaL_checkstring(L, 1);
jbe@112 1018 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1019 strcpy(sockaddr.sun_path, path);
jbe@118 1020 if (stat(path, &sb) == 0) {
jbe@118 1021 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1022 }
jbe@112 1023 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1024 listener->fd = -1;
jbe@112 1025 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1026 sock = socket(
jbe@112 1027 PF_LOCAL,
jbe@112 1028 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1029 0
jbe@112 1030 );
jbe@112 1031 if (sock < 0) {
jbe@112 1032 moonbr_io_errmsg();
jbe@112 1033 lua_pushnil(L);
jbe@112 1034 lua_pushstring(L, errmsg);
jbe@112 1035 return 2;
jbe@112 1036 }
jbe@112 1037 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@112 1038 moonbr_io_errmsg();
jbe@112 1039 close(sock);
jbe@112 1040 lua_pushnil(L);
jbe@112 1041 lua_pushstring(L, errmsg);
jbe@112 1042 return 2;
jbe@112 1043 }
jbe@112 1044 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@112 1045 moonbr_io_errmsg();
jbe@112 1046 close(sock);
jbe@112 1047 lua_pushnil(L);
jbe@112 1048 lua_pushstring(L, errmsg);
jbe@112 1049 return 2;
jbe@112 1050 }
jbe@112 1051 listener->fd = sock;
jbe@118 1052 listener->addrfam = AF_LOCAL;
jbe@112 1053 listener->nonblocking = -1;
jbe@112 1054 return 1;
jbe@112 1055 }
jbe@112 1056
jbe@108 1057 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1058 moonbr_io_listener_t *listener;
jbe@108 1059 const char *host, *port;
jbe@108 1060 struct addrinfo hints = { 0, };
jbe@108 1061 struct addrinfo *res, *addrinfo;
jbe@108 1062 int errcode;
jbe@108 1063 int sock;
jbe@108 1064 host = luaL_optstring(L, 1, NULL);
jbe@108 1065 port = luaL_checkstring(L, 2);
jbe@108 1066 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1067 listener->fd = -1;
jbe@108 1068 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1069 hints.ai_family = AF_UNSPEC;
jbe@108 1070 hints.ai_socktype = SOCK_STREAM;
jbe@108 1071 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1072 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1073 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1074 if (errcode) {
jbe@108 1075 freeaddrinfo(res);
jbe@108 1076 if (errcode == EAI_SYSTEM) {
jbe@108 1077 moonbr_io_errmsg();
jbe@108 1078 lua_pushnil(L);
jbe@108 1079 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1080 } else {
jbe@108 1081 lua_pushnil(L);
jbe@108 1082 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1083 }
jbe@108 1084 return 2;
jbe@108 1085 }
jbe@108 1086 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1087 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1088 }
jbe@108 1089 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1090 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1091 }
jbe@108 1092 addrinfo = res;
jbe@108 1093 moonbr_io_tcpconnect_found:
jbe@118 1094 listener->addrfam = addrinfo->ai_family;
jbe@108 1095 sock = socket(
jbe@134 1096 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1097 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1098 addrinfo->ai_protocol
jbe@108 1099 );
jbe@108 1100 if (sock < 0) {
jbe@108 1101 moonbr_io_errmsg();
jbe@108 1102 freeaddrinfo(res);
jbe@108 1103 lua_pushnil(L);
jbe@108 1104 lua_pushstring(L, errmsg);
jbe@108 1105 return 2;
jbe@108 1106 }
jbe@120 1107 {
jbe@120 1108 static const int reuseval = 1;
jbe@120 1109 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@120 1110 moonbr_io_errmsg();
jbe@120 1111 freeaddrinfo(res);
jbe@120 1112 close(sock);
jbe@120 1113 lua_pushnil(L);
jbe@120 1114 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1115 return 2;
jbe@120 1116 }
jbe@120 1117 }
jbe@108 1118 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1119 moonbr_io_errmsg();
jbe@108 1120 freeaddrinfo(res);
jbe@108 1121 close(sock);
jbe@108 1122 lua_pushnil(L);
jbe@108 1123 lua_pushstring(L, errmsg);
jbe@108 1124 return 2;
jbe@108 1125 }
jbe@108 1126 freeaddrinfo(res);
jbe@108 1127 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@108 1128 moonbr_io_errmsg();
jbe@108 1129 close(sock);
jbe@108 1130 lua_pushnil(L);
jbe@108 1131 lua_pushstring(L, errmsg);
jbe@108 1132 return 2;
jbe@108 1133 }
jbe@108 1134 listener->fd = sock;
jbe@108 1135 listener->nonblocking = -1;
jbe@108 1136 return 1;
jbe@108 1137 }
jbe@108 1138
jbe@108 1139 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1140 moonbr_io_listener_t *listener;
jbe@108 1141 int fd;
jbe@108 1142 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1143 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1144 if (listener->nonblocking != nonblocking) {
jbe@108 1145 int flags;
jbe@108 1146 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1147 if (flags == -1) {
jbe@108 1148 moonbr_io_errmsg();
jbe@108 1149 close(listener->fd);
jbe@108 1150 listener->fd = -1;
jbe@108 1151 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1152 }
jbe@108 1153 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1154 else flags &= ~O_NONBLOCK;
jbe@108 1155 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@108 1156 moonbr_io_errmsg();
jbe@108 1157 close(listener->fd);
jbe@108 1158 listener->fd = -1;
jbe@108 1159 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1160 }
jbe@108 1161 listener->nonblocking = nonblocking;
jbe@108 1162 }
jbe@108 1163 while (1) {
jbe@108 1164 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@108 1165 if (fd < 0) {
jbe@108 1166 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1167 lua_pushboolean(L, 0);
jbe@108 1168 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1169 return 2;
jbe@108 1170 } else if (errno != EINTR) {
jbe@108 1171 moonbr_io_errmsg();
jbe@108 1172 lua_pushnil(L);
jbe@108 1173 lua_pushstring(L, errmsg);
jbe@108 1174 return 2;
jbe@108 1175 }
jbe@108 1176 } else {
jbe@108 1177 moonbr_io_pushhandle(L, fd);
jbe@108 1178 return 1;
jbe@108 1179 }
jbe@108 1180 }
jbe@108 1181 }
jbe@108 1182
jbe@108 1183 static int moonbr_io_accept(lua_State *L) {
jbe@108 1184 return moonbr_io_accept_impl(L, 0);
jbe@108 1185 }
jbe@108 1186
jbe@108 1187 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1188 return moonbr_io_accept_impl(L, 1);
jbe@108 1189 }
jbe@108 1190
jbe@108 1191 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1192 moonbr_io_listener_t *listener;
jbe@118 1193 struct sockaddr_un addr;
jbe@118 1194 socklen_t addrlen;
jbe@118 1195 struct stat sb;
jbe@108 1196 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1197 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1198 addrlen = sizeof(addr);
jbe@118 1199 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1200 if (close(listener->fd)) {
jbe@108 1201 moonbr_io_errmsg();
jbe@108 1202 listener->fd = -1;
jbe@118 1203 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1204 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1205 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1206 }
jbe@118 1207 }
jbe@108 1208 lua_pushnil(L);
jbe@108 1209 lua_pushstring(L, errmsg);
jbe@108 1210 return 2;
jbe@108 1211 }
jbe@108 1212 listener->fd = -1;
jbe@118 1213 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1214 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1215 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1216 }
jbe@118 1217 }
jbe@108 1218 lua_pushboolean(L, 1);
jbe@108 1219 return 1;
jbe@108 1220 }
jbe@108 1221
jbe@108 1222 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1223 moonbr_io_listener_t *listener;
jbe@108 1224 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1225 if (listener->fd >= 0) close(listener->fd);
jbe@108 1226 listener->fd = -1;
jbe@108 1227 return 0;
jbe@108 1228 }
jbe@108 1229
jbe@106 1230 static int moonbr_io_poll(lua_State *L) {
jbe@106 1231 moonbr_io_handle_t *handle;
jbe@108 1232 moonbr_io_listener_t *listener;
jbe@106 1233 int fd, isnum;
jbe@106 1234 int nfds = 0;
jbe@106 1235 fd_set readfds, writefds, exceptfds;
jbe@106 1236 struct timeval timeout = {0, };
jbe@106 1237 int status;
jbe@106 1238 FD_ZERO(&readfds);
jbe@106 1239 FD_ZERO(&writefds);
jbe@106 1240 FD_ZERO(&exceptfds);
jbe@106 1241 if (!lua_isnoneornil(L, 1)) {
jbe@106 1242 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1243 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1244 if (lua_toboolean(L, -1)) {
jbe@106 1245 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1246 if (handle) {
jbe@109 1247 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1248 fd = handle->fd;
jbe@122 1249 if (
jbe@122 1250 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1251 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1252 ) {
jbe@109 1253 lua_pushboolean(L, 1);
jbe@109 1254 return 1;
jbe@109 1255 }
jbe@106 1256 } else {
jbe@108 1257 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1258 if (listener) {
jbe@108 1259 fd = listener->fd;
jbe@108 1260 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1261 } else {
jbe@108 1262 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1263 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1264 }
jbe@106 1265 }
jbe@138 1266 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1267 FD_SET(fd, &readfds);
jbe@106 1268 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1269 }
jbe@106 1270 }
jbe@106 1271 }
jbe@106 1272 if (!lua_isnoneornil(L, 2)) {
jbe@106 1273 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1274 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1275 if (lua_toboolean(L, -1)) {
jbe@106 1276 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1277 if (handle) {
jbe@109 1278 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1279 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1280 fd = handle->fd;
jbe@106 1281 } else {
jbe@108 1282 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1283 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1284 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1285 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1286 }
jbe@138 1287 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1288 FD_SET(fd, &writefds);
jbe@106 1289 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1290 }
jbe@106 1291 }
jbe@106 1292 }
jbe@106 1293 if (!lua_isnoneornil(L, 3)) {
jbe@106 1294 lua_Number n;
jbe@106 1295 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1296 if (isnum && n<0) {
jbe@146 1297 lua_pushboolean(L, 0);
jbe@146 1298 lua_pushliteral(L, "Negative timeout");
jbe@146 1299 return 2;
jbe@146 1300 } else if (isnum && n>=0 && n<100000000) {
jbe@106 1301 timeout.tv_sec = n;
jbe@106 1302 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1303 } else {
jbe@106 1304 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1305 }
jbe@106 1306 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1307 } else {
jbe@106 1308 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1309 }
jbe@106 1310 if (status == -1) {
jbe@106 1311 if (errno == EINTR) {
jbe@146 1312 lua_pushnil(L);
jbe@106 1313 lua_pushliteral(L, "Signal received while polling file descriptors");
jbe@106 1314 return 2;
jbe@106 1315 } else {
jbe@106 1316 moonbr_io_errmsg();
jbe@106 1317 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1318 }
jbe@106 1319 } else if (status == 0) {
jbe@106 1320 lua_pushboolean(L, 0);
jbe@106 1321 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1322 return 2;
jbe@106 1323 } else {
jbe@106 1324 lua_pushboolean(L, 1);
jbe@106 1325 return 1;
jbe@106 1326 }
jbe@106 1327 }
jbe@106 1328
jbe@115 1329 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1330 lua_Number sub;
jbe@115 1331 struct timespec tp;
jbe@115 1332 sub = luaL_optnumber(L, 1, 0);
jbe@115 1333 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1334 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1335 }
jbe@115 1336 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1337 return 1;
jbe@115 1338 }
jbe@115 1339
jbe@149 1340 #define MOONBR_IO_RUN_STACKBASE 7
jbe@149 1341
jbe@149 1342 #if LUA_VERSION_NUM >= 503
jbe@149 1343 static int moonbr_io_run_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@149 1344 #else
jbe@149 1345 static int moonbr_io_run_cont(lua_State *L) {
jbe@149 1346 #endif
jbe@149 1347 #if !(LUA_VERSION_NUM >= 503)
jbe@149 1348 int ctx = 0;
jbe@149 1349 lua_getctx(L, &ctx);
jbe@149 1350 #endif
jbe@149 1351 while (1) {
jbe@149 1352 int work_to_do = 0;
jbe@149 1353 assert(lua_gettop(L) == 7);
jbe@149 1354 if (lua_isboolean(L, -1) && !lua_toboolean(L, -1)) return 1;
jbe@149 1355 lua_pop(L, 1);
jbe@149 1356 if (ctx) {
jbe@149 1357 for (lua_pushnil(L); lua_next(L, 4); lua_pop(L, 1)) {
jbe@149 1358 lua_pushvalue(L, -2);
jbe@149 1359 lua_pushnil(L);
jbe@149 1360 lua_rawset(L, 4);
jbe@149 1361 }
jbe@149 1362 for (lua_pushnil(L); lua_next(L, 5); lua_pop(L, 1)) {
jbe@149 1363 lua_pushvalue(L, -2);
jbe@149 1364 lua_pushnil(L);
jbe@149 1365 lua_rawset(L, 5);
jbe@149 1366 }
jbe@149 1367 }
jbe@149 1368 assert(lua_gettop(L) == 6);
jbe@149 1369 while (lua_next(L, 1)) {
jbe@149 1370 void *marker;
jbe@149 1371 assert(lua_gettop(L) == MOONBR_IO_RUN_STACKBASE);
jbe@149 1372 while (1) {
jbe@149 1373 lua_pushvalue(L, -2);
jbe@149 1374 lua_call(L, 0, LUA_MULTRET);
jbe@149 1375 if (!lua_checkstack(L, LUA_MINSTACK)) luaL_error(L, "Lua stack exhausted");
jbe@149 1376 marker = lua_touserdata(L, MOONBR_IO_RUN_STACKBASE+1);
jbe@149 1377 if (marker == &moonbr_io_block_udata) {
jbe@149 1378 const char *mode = lua_tostring(L, MOONBR_IO_RUN_STACKBASE+3);
jbe@149 1379 if (mode && !lua_isnoneornil(L, MOONBR_IO_RUN_STACKBASE+2)) {
jbe@149 1380 if (strchr(mode, 'r')) {
jbe@149 1381 lua_pushvalue(L, MOONBR_IO_RUN_STACKBASE+2);
jbe@149 1382 lua_pushboolean(L, 1);
jbe@149 1383 lua_rawset(L, 4);
jbe@149 1384 }
jbe@149 1385 if (strchr(mode, 'w')) {
jbe@149 1386 lua_pushvalue(L, MOONBR_IO_RUN_STACKBASE+2);
jbe@149 1387 lua_pushboolean(L, 1);
jbe@149 1388 lua_rawset(L, 5);
jbe@149 1389 }
jbe@149 1390 }
jbe@149 1391 work_to_do = 1;
jbe@149 1392 break;
jbe@149 1393 } else if (marker == &moonbr_io_multiblock_udata) {
jbe@149 1394 if (lua_type(L, MOONBR_IO_RUN_STACKBASE+2) == LUA_TTABLE) {
jbe@149 1395 for (lua_pushnil(L); lua_next(L, MOONBR_IO_RUN_STACKBASE+2); lua_pop(L, 1)) {
jbe@149 1396 if (lua_toboolean(L, -1)) {
jbe@149 1397 lua_pushvalue(L, -2);
jbe@149 1398 lua_pushboolean(L, 1);
jbe@149 1399 lua_rawset(L, 4);
jbe@149 1400 }
jbe@149 1401 }
jbe@149 1402 }
jbe@149 1403 if (lua_type(L, MOONBR_IO_RUN_STACKBASE+3) == LUA_TTABLE) {
jbe@149 1404 for (lua_pushnil(L); lua_next(L, MOONBR_IO_RUN_STACKBASE+3); lua_pop(L, 1)) {
jbe@149 1405 if (lua_toboolean(L, -1)) {
jbe@149 1406 lua_pushvalue(L, -2);
jbe@149 1407 lua_pushboolean(L, 1);
jbe@149 1408 lua_rawset(L, 5);
jbe@149 1409 }
jbe@149 1410 }
jbe@149 1411 }
jbe@149 1412 work_to_do = 1;
jbe@149 1413 break;
jbe@149 1414 } else if (lua_isboolean(L, MOONBR_IO_RUN_STACKBASE)) {
jbe@149 1415 lua_pushvalue(L, MOONBR_IO_RUN_STACKBASE-1);
jbe@149 1416 lua_pushnil(L);
jbe@149 1417 lua_rawset(L, 1);
jbe@149 1418 break;
jbe@149 1419 } else {
jbe@149 1420 lua_pushvalue(L, MOONBR_IO_RUN_STACKBASE);
jbe@149 1421 lua_insert(L, MOONBR_IO_RUN_STACKBASE+1);
jbe@149 1422 lua_call(L, lua_gettop(L)-1-MOONBR_IO_RUN_STACKBASE, 1);
jbe@149 1423 if (lua_toboolean(L, -1)) {
jbe@149 1424 lua_pushvalue(L, MOONBR_IO_RUN_STACKBASE-1);
jbe@149 1425 lua_pushnil(L);
jbe@149 1426 lua_rawset(L, 1);
jbe@149 1427 break;
jbe@149 1428 }
jbe@149 1429 }
jbe@149 1430 lua_settop(L, MOONBR_IO_RUN_STACKBASE);
jbe@149 1431 }
jbe@149 1432 lua_settop(L, MOONBR_IO_RUN_STACKBASE-1);
jbe@149 1433 }
jbe@149 1434 if (!work_to_do) {
jbe@149 1435 lua_pushboolean(L, 1);
jbe@149 1436 return 1;
jbe@149 1437 }
jbe@149 1438 lua_pushnil(L);
jbe@149 1439 assert(lua_gettop(L) == 6);
jbe@149 1440 ctx = 1;
jbe@149 1441 if (lua_isfunction(L, 2)) {
jbe@149 1442 lua_pushvalue(L, 2);
jbe@149 1443 lua_pushlightuserdata(L, &moonbr_io_multiblock_udata);
jbe@149 1444 lua_pushvalue(L, 4);
jbe@149 1445 lua_pushvalue(L, 5);
jbe@149 1446 lua_callk(L, 3, 1, ctx, moonbr_io_run_cont);
jbe@149 1447 } else {
jbe@149 1448 lua_pushcfunction(L, moonbr_io_poll);
jbe@149 1449 lua_pushvalue(L, 4);
jbe@149 1450 lua_pushvalue(L, 5);
jbe@149 1451 if (lua_isnil(L, 2)) {
jbe@149 1452 lua_call(L, 2, 1);
jbe@149 1453 } else {
jbe@149 1454 lua_pushvalue(L, 2);
jbe@149 1455 lua_pushcfunction(L, moonbr_io_timeref);
jbe@149 1456 lua_pushvalue(L, 3);
jbe@149 1457 lua_call(L, 1, 1);
jbe@149 1458 lua_arith(L, LUA_OPSUB);
jbe@149 1459 lua_call(L, 3, 1);
jbe@149 1460 }
jbe@149 1461 }
jbe@149 1462 assert(lua_gettop(L) == 7);
jbe@149 1463 }
jbe@149 1464 }
jbe@149 1465
jbe@149 1466 static int moonbr_io_run(lua_State *L) {
jbe@149 1467 lua_settop(L, 2);
jbe@149 1468 luaL_checktype(L, 1, LUA_TTABLE);
jbe@149 1469 if (lua_isnil(L, 2) || lua_isfunction(L, 2)) {
jbe@149 1470 lua_pushnil(L);
jbe@149 1471 } else if (!lua_isnil(L, 2)) {
jbe@149 1472 luaL_checknumber(L, 2);
jbe@149 1473 lua_pushcfunction(L, moonbr_io_timeref);
jbe@149 1474 lua_call(L, 0, 1);
jbe@149 1475 }
jbe@149 1476 assert(lua_gettop(L) == 3);
jbe@149 1477 lua_newtable(L); /* read_fds at stack position 4 */
jbe@149 1478 lua_newtable(L); /* write_fds at stack position 5 */
jbe@149 1479 lua_pushnil(L); /* current thread */
jbe@149 1480 lua_pushnil(L);
jbe@149 1481 #if LUA_VERSION_NUM >= 503
jbe@149 1482 return moonbr_io_run_cont(L, 0, 0);
jbe@149 1483 #else
jbe@149 1484 return moonbr_io_run_cont(L);
jbe@149 1485 #endif
jbe@149 1486 }
jbe@149 1487
jbe@79 1488 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1489 {"read", moonbr_io_read},
jbe@85 1490 {"read_nb", moonbr_io_read_nb},
jbe@140 1491 {"read_call", moonbr_io_read_call},
jbe@140 1492 {"read_yield", moonbr_io_read_yield},
jbe@86 1493 {"drain", moonbr_io_drain},
jbe@86 1494 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1495 {"drain_call", moonbr_io_drain_call},
jbe@144 1496 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1497 {"write", moonbr_io_write},
jbe@81 1498 {"write_nb", moonbr_io_write_nb},
jbe@145 1499 {"write_call", moonbr_io_write_call},
jbe@145 1500 {"write_yield", moonbr_io_write_yield},
jbe@80 1501 {"flush", moonbr_io_flush},
jbe@81 1502 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1503 {"flush_call", moonbr_io_flush_call},
jbe@145 1504 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1505 {"finish", moonbr_io_finish},
jbe@87 1506 {"close", moonbr_io_close},
jbe@85 1507 {"reset", moonbr_io_reset},
jbe@79 1508 {NULL, NULL}
jbe@79 1509 };
jbe@79 1510
jbe@79 1511 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1512 {"__index", moonbr_io_handleindex},
jbe@79 1513 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1514 {"__gc", moonbr_io_handlegc},
jbe@108 1515 {NULL, NULL}
jbe@108 1516 };
jbe@108 1517
jbe@108 1518 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1519 {"accept", moonbr_io_accept},
jbe@108 1520 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1521 {"close", moonbr_io_unlisten},
jbe@108 1522 {NULL, NULL}
jbe@108 1523 };
jbe@108 1524
jbe@108 1525 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1526 {"__gc", moonbr_io_listenergc},
jbe@79 1527 {NULL, NULL}
jbe@79 1528 };
jbe@79 1529
jbe@79 1530 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 1531 {"localconnect", moonbr_io_localconnect},
jbe@111 1532 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 1533 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 1534 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 1535 {"locallisten", moonbr_io_locallisten},
jbe@108 1536 {"tcplisten", moonbr_io_tcplisten},
jbe@106 1537 {"poll", moonbr_io_poll},
jbe@115 1538 {"timeref", moonbr_io_timeref},
jbe@149 1539 {"run", moonbr_io_run},
jbe@79 1540 {NULL, NULL}
jbe@79 1541 };
jbe@79 1542
jbe@79 1543 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 1544
jbe@113 1545 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 1546
jbe@80 1547 lua_newtable(L); // module
jbe@80 1548
jbe@146 1549 lua_pushlightuserdata(L, &moonbr_io_block_udata);
jbe@146 1550 lua_setfield(L, -2, "block");
jbe@149 1551 lua_pushlightuserdata(L, &moonbr_io_multiblock_udata);
jbe@149 1552 lua_setfield(L, -2, "multiblock");
jbe@146 1553
jbe@79 1554 lua_newtable(L); // public metatable
jbe@79 1555 lua_newtable(L); // handle methods
jbe@79 1556 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 1557 lua_pushvalue(L, -1);
jbe@146 1558 lua_setfield(L, -4, "handle_pt");
jbe@79 1559 lua_setfield(L, -2, "__index");
jbe@79 1560 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1561
jbe@79 1562 lua_newtable(L); // handle metatable
jbe@79 1563 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 1564 lua_pushvalue(L, -1);
jbe@146 1565 lua_setfield(L, -3, "handle_mt");
jbe@79 1566 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 1567
jbe@108 1568 lua_newtable(L); // listener metatable
jbe@108 1569 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 1570 lua_newtable(L); // listener methods
jbe@108 1571 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 1572 lua_pushvalue(L, -1);
jbe@146 1573 lua_setfield(L, -4, "listener_pt");
jbe@108 1574 lua_setfield(L, -2, "__index");
jbe@146 1575 lua_pushvalue(L, -1);
jbe@146 1576 lua_setfield(L, -3, "listener_mt");
jbe@108 1577 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1578
jbe@79 1579 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 1580 return 1;
jbe@79 1581
jbe@79 1582 }
jbe@79 1583

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