moonbridge

annotate moonbridge_io.c @ 312:c9fec96fe392

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merge
author jbe
date Sat Jan 27 17:54:00 2018 +0100 (2018-01-27)
parents 930a43a0099a
children 334ea1f13b0b
rev   line source
jbe@209 1
jbe@209 2 #ifndef __has_include
jbe@209 3 #define __has_include(x) 0
jbe@209 4 #endif
jbe@79 5
jbe@79 6 #include <stdlib.h>
jbe@135 7 #include <stdint.h>
jbe@135 8 #include <string.h>
jbe@135 9 #include <errno.h>
jbe@79 10 #include <unistd.h>
jbe@135 11 #include <signal.h>
jbe@135 12 #include <fcntl.h>
jbe@135 13 #include <sys/stat.h>
jbe@79 14 #include <sys/socket.h>
jbe@111 15 #include <sys/un.h>
jbe@95 16 #include <netinet/in.h>
jbe@95 17 #include <netinet/tcp.h>
jbe@135 18 #include <sys/select.h>
jbe@136 19 #include <time.h>
jbe@135 20 #include <netdb.h>
jbe@107 21 #include <arpa/inet.h>
jbe@205 22 #include <sys/types.h>
jbe@205 23 #include <sys/wait.h>
jbe@209 24 #if defined(__linux__) || __has_include(<bsd/unistd.h>)
jbe@209 25 #include <bsd/unistd.h>
jbe@209 26 #endif
jbe@211 27
jbe@243 28 #ifdef MOONBR_IO_USE_TLS
jbe@243 29 #include <tls.h>
jbe@243 30 #endif
jbe@243 31
jbe@79 32 #include <lua.h>
jbe@79 33 #include <lauxlib.h>
jbe@79 34 #include <lualib.h>
jbe@79 35
jbe@149 36 #include <assert.h>
jbe@149 37
jbe@80 38 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 39 #define MOONBR_IO_READBUFLEN 4096
jbe@80 40 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 41
jbe@108 42 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 43
jbe@213 44 #define MOONBR_IO_STRERROR_R_MSG "Error detail unavailable due to noncompliant strerror_r() implementation"
jbe@257 45 #define moonbr_io_prepare_errmsg() \
jbe@213 46 char errmsg[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG; \
jbe@80 47 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@257 48 #define moonbr_io_return_prepared_errmsg() \
jbe@257 49 lua_pushnil(L); \
jbe@257 50 lua_pushstring(L, errmsg); \
jbe@257 51 return 2
jbe@257 52 #define moonbr_io_return_errmsg() \
jbe@257 53 do { \
jbe@257 54 moonbr_io_prepare_errmsg(); \
jbe@257 55 moonbr_io_return_prepared_errmsg(); \
jbe@257 56 } while (0)
jbe@80 57
jbe@79 58 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 59 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 60 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205 61 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205 62 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@79 63
jbe@243 64 #ifdef MOONBR_IO_USE_TLS
jbe@258 65
jbe@243 66 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252 67
jbe@252 68 typedef struct {
jbe@252 69 struct tls_config *config;
jbe@252 70 int server;
jbe@252 71 } moonbr_io_tlsconf_t;
jbe@258 72
jbe@258 73 #endif /* MOONBR_IO_USE_TLS */
jbe@243 74
jbe@79 75 typedef struct {
jbe@79 76 int fd;
jbe@107 77 int issock;
jbe@107 78 sa_family_t addrfam;
jbe@94 79 int finished;
jbe@94 80 int closed;
jbe@81 81 int nonblocking;
jbe@95 82 int nopush;
jbe@85 83 int readerr;
jbe@105 84 int readbufin;
jbe@105 85 int readbufout;
jbe@81 86 int writeerr;
jbe@83 87 size_t writeleft;
jbe@132 88 size_t flushedleft;
jbe@83 89 #if LUA_VERSION_NUM >= 503
jbe@83 90 lua_Integer writeqin;
jbe@83 91 lua_Integer writeqout;
jbe@83 92 #else
jbe@83 93 int writeqin;
jbe@83 94 int writeqout;
jbe@83 95 #endif
jbe@83 96 size_t writeqoff;
jbe@103 97 int writebufin;
jbe@103 98 int writebufout;
jbe@85 99 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 100 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246 101 #ifdef MOONBR_IO_USE_TLS
jbe@250 102 struct tls *tls;
jbe@250 103 struct tls *servertls;
jbe@250 104 int tlshandshake;
jbe@261 105 int tlsclosing;
jbe@246 106 #endif
jbe@79 107 } moonbr_io_handle_t;
jbe@79 108
jbe@108 109 typedef struct {
jbe@108 110 int fd;
jbe@118 111 sa_family_t addrfam;
jbe@108 112 int nonblocking;
jbe@108 113 } moonbr_io_listener_t;
jbe@108 114
jbe@205 115 typedef struct {
jbe@205 116 pid_t pid;
jbe@303 117 int status;
jbe@303 118 int status_valid;
jbe@205 119 } moonbr_io_child_t;
jbe@205 120
jbe@293 121 volatile sig_atomic_t moonbr_io_sigterm_flag = 0;
jbe@297 122 volatile sig_atomic_t moonbr_io_sigchld_flag = 0;
jbe@284 123
jbe@148 124 static int moonbr_io_yield(lua_State *L) {
jbe@149 125 return lua_yield(L, lua_gettop(L));
jbe@140 126 }
jbe@140 127
jbe@140 128 #if LUA_VERSION_NUM >= 503
jbe@140 129 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 130 #else
jbe@140 131 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 132 #endif
jbe@140 133 return lua_gettop(L);
jbe@140 134 }
jbe@140 135
jbe@145 136 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 137 static int yieldfunc(lua_State *L) { \
jbe@145 138 int args; \
jbe@145 139 lua_pushcfunction(L, callfunc); \
jbe@145 140 lua_insert(L, 1); \
jbe@145 141 args = lua_gettop(L); \
jbe@148 142 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 143 lua_insert(L, 3); \
jbe@145 144 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 145 return lua_gettop(L); \
jbe@145 146 }
jbe@145 147
jbe@256 148 static int moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 149 int flags;
jbe@256 150 if (handle->nonblocking == nonblocking) return 0;
jbe@95 151 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@256 152 if (flags == -1) return -1;
jbe@95 153 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 154 else flags &= ~O_NONBLOCK;
jbe@256 155 if (fcntl(handle->fd, F_SETFL, flags) == -1) return -1;
jbe@95 156 handle->nonblocking = nonblocking;
jbe@256 157 return 0;
jbe@81 158 }
jbe@81 159
jbe@256 160 static int moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 161 struct linger lingerval = { 0, };
jbe@256 162 if (!handle->issock) return 0;
jbe@87 163 if (timeout >= 0) {
jbe@87 164 lingerval.l_onoff = 1;
jbe@87 165 lingerval.l_linger = timeout;
jbe@87 166 }
jbe@256 167 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) return -1;
jbe@256 168 return 0;
jbe@87 169 }
jbe@87 170
jbe@256 171 static inline int moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 172 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 173 if (
jbe@107 174 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 175 handle->nopush == nopush
jbe@256 176 ) return 0;
jbe@96 177 #if defined(TCP_NOPUSH)
jbe@256 178 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) return -1;
jbe@104 179 #elif defined(TCP_CORK)
jbe@256 180 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) return -1;
jbe@251 181 #endif
jbe@95 182 handle->nopush = nopush;
jbe@96 183 #else
jbe@96 184 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 185 #endif
jbe@256 186 return 0;
jbe@95 187 }
jbe@95 188
jbe@86 189 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 190 moonbr_io_handle_t *handle;
jbe@85 191 lua_Integer maxread;
jbe@85 192 const char *terminatorstr;
jbe@210 193 size_t terminatorlen;
jbe@210 194 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 195 luaL_Buffer luabuf;
jbe@85 196 size_t luabufcnt = 0;
jbe@105 197 int remaining;
jbe@85 198 char *terminatorpos;
jbe@103 199 ssize_t bytesread;
jbe@85 200 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153 201 maxread = luaL_optinteger(L, 2, -1);
jbe@85 202 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 203 if (terminatorlen) {
jbe@85 204 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 205 terminator = terminatorstr[0];
jbe@85 206 }
jbe@86 207 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 208 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 209 if (handle->readerr) {
jbe@85 210 lua_pushnil(L);
jbe@85 211 lua_pushliteral(L, "Previous read error");
jbe@85 212 return 2;
jbe@85 213 }
jbe@143 214 if (handle->fd < 0) {
jbe@143 215 /* fake EOF to simulate shutdown */
jbe@143 216 if (!drain) lua_pushliteral(L, "");
jbe@143 217 else lua_pushinteger(L, 0);
jbe@143 218 lua_pushliteral(L, "eof");
jbe@143 219 return 2;
jbe@143 220 }
jbe@105 221 handle->readerr = 1;
jbe@257 222 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@86 223 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 224 while (1) {
jbe@105 225 remaining = -1;
jbe@142 226 terminatorpos = NULL;
jbe@105 227 if (
jbe@153 228 maxread >= 0 &&
jbe@143 229 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 230 ) {
jbe@142 231 remaining = (size_t)maxread - luabufcnt;
jbe@193 232 if (terminatorlen) {
jbe@193 233 terminatorpos = memchr(
jbe@193 234 handle->readbuf + handle->readbufout,
jbe@193 235 terminator,
jbe@193 236 remaining
jbe@193 237 );
jbe@193 238 }
jbe@85 239 } else if (terminatorlen) {
jbe@105 240 terminatorpos = memchr(
jbe@105 241 handle->readbuf + handle->readbufout,
jbe@105 242 terminator,
jbe@105 243 handle->readbufin - handle->readbufout
jbe@105 244 );
jbe@85 245 }
jbe@142 246 if (terminatorpos) remaining = 1 + (
jbe@142 247 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 248 );
jbe@105 249 if (remaining >= 0) {
jbe@86 250 if (!drain) {
jbe@105 251 luaL_addlstring(
jbe@105 252 &luabuf,
jbe@105 253 handle->readbuf + handle->readbufout,
jbe@105 254 remaining
jbe@105 255 );
jbe@86 256 luaL_pushresult(&luabuf);
jbe@90 257 } else {
jbe@105 258 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 259 }
jbe@143 260 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 261 else lua_pushliteral(L, "maxlen");
jbe@105 262 handle->readbufout += remaining;
jbe@105 263 if (handle->readbufout == handle->readbufin) {
jbe@105 264 handle->readbufin = 0;
jbe@143 265 handle->readbufout = 0;
jbe@105 266 }
jbe@104 267 handle->readerr = 0;
jbe@143 268 return 2;
jbe@85 269 }
jbe@105 270 if (!drain) luaL_addlstring(
jbe@105 271 &luabuf,
jbe@105 272 handle->readbuf + handle->readbufout,
jbe@105 273 handle->readbufin - handle->readbufout
jbe@105 274 );
jbe@105 275 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 276 handle->readbufout = 0;
jbe@249 277 #ifdef MOONBR_IO_USE_TLS
jbe@249 278 if (handle->tls) {
jbe@250 279 do {
jbe@250 280 if (!handle->tlshandshake) {
jbe@250 281 do bytesread = tls_handshake(handle->tls);
jbe@250 282 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 283 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 284 handle->tlshandshake = bytesread;
jbe@250 285 errno = EAGAIN;
jbe@250 286 break;
jbe@250 287 }
jbe@250 288 if (bytesread < 0) {
jbe@250 289 lua_pushnil(L);
jbe@250 290 lua_pushstring(L, tls_error(handle->tls));
jbe@250 291 return 2;
jbe@250 292 }
jbe@250 293 handle->tlshandshake = 1;
jbe@250 294 }
jbe@250 295 do bytesread = tls_read(handle->tls, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@250 296 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 297 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 298 errno = EAGAIN;
jbe@250 299 break;
jbe@250 300 }
jbe@250 301 if (bytesread < 0) {
jbe@250 302 lua_pushnil(L);
jbe@250 303 lua_pushstring(L, tls_error(handle->tls));
jbe@250 304 return 2;
jbe@250 305 }
jbe@250 306 } while (0);
jbe@249 307 }
jbe@249 308 else
jbe@249 309 #endif
jbe@249 310 do bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@249 311 while (bytesread < 0 && (errno == EINTR));
jbe@105 312 if (
jbe@105 313 bytesread == 0 || (
jbe@105 314 nonblocking &&
jbe@105 315 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 316 )
jbe@105 317 ) {
jbe@105 318 handle->readbufin = 0;
jbe@143 319 if (!drain) luaL_pushresult(&luabuf);
jbe@143 320 else lua_pushinteger(L, luabufcnt);
jbe@143 321 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 322 else lua_pushliteral(L, "block");
jbe@105 323 handle->readerr = 0;
jbe@143 324 return 2;
jbe@105 325 }
jbe@257 326 if (bytesread < 0) moonbr_io_return_errmsg();
jbe@105 327 handle->readbufin = bytesread;
jbe@86 328 }
jbe@85 329 }
jbe@85 330
jbe@85 331 static int moonbr_io_read(lua_State *L) {
jbe@86 332 return moonbr_io_read_impl(L, 0, 0);
jbe@85 333 }
jbe@85 334
jbe@85 335 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 336 return moonbr_io_read_impl(L, 1, 0);
jbe@86 337 }
jbe@86 338
jbe@86 339 static int moonbr_io_drain(lua_State *L) {
jbe@86 340 return moonbr_io_read_impl(L, 0, 1);
jbe@86 341 }
jbe@86 342
jbe@86 343 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 344 return moonbr_io_read_impl(L, 1, 1);
jbe@85 345 }
jbe@85 346
jbe@140 347 #if LUA_VERSION_NUM >= 503
jbe@140 348 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 349 #else
jbe@140 350 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 351 #endif
jbe@143 352 lua_Integer remaining;
jbe@143 353 size_t len;
jbe@140 354 #if !(LUA_VERSION_NUM >= 503)
jbe@140 355 int ctx = 0;
jbe@140 356 lua_getctx(L, &ctx);
jbe@140 357 #endif
jbe@140 358 remaining = lua_tointeger(L, 3);
jbe@140 359 while (1) {
jbe@140 360 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 361 lua_pushvalue(L, 1);
jbe@140 362 lua_pushvalue(L, 3);
jbe@140 363 lua_pushvalue(L, 4);
jbe@140 364 lua_call(L, 3, 2);
jbe@143 365 if (lua_isnil(L, -2)) return 2;
jbe@143 366 lua_insert(L, -2);
jbe@143 367 len = lua_rawlen(L, -1);
jbe@143 368 if (ctx == 0) {
jbe@143 369 lua_replace(L, 5);
jbe@143 370 ctx = 1;
jbe@143 371 } else if (ctx == 1) {
jbe@143 372 lua_pushvalue(L, 5);
jbe@143 373 lua_newtable(L);
jbe@143 374 lua_replace(L, 5);
jbe@304 375 lua_rawseti(L, 5, 1);
jbe@143 376 lua_rawseti(L, 5, 2);
jbe@143 377 ctx = 2;
jbe@140 378 } else {
jbe@143 379 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 380 }
jbe@144 381 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 382 lua_pop(L, 1);
jbe@144 383 if (remaining >= 0 && len) {
jbe@143 384 remaining -= len;
jbe@143 385 lua_pushinteger(L, remaining);
jbe@143 386 lua_replace(L, 3);
jbe@143 387 }
jbe@140 388 lua_pushvalue(L, 2);
jbe@152 389 lua_callk(L, 0, 0, ctx, moonbr_io_read_cont);
jbe@140 390 }
jbe@305 391 if (ctx != 1) {
jbe@140 392 luaL_Buffer buf;
jbe@140 393 lua_Integer i, chunkcount;
jbe@140 394 chunkcount = lua_rawlen(L, 5);
jbe@140 395 luaL_buffinit(L, &buf);
jbe@140 396 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 397 lua_rawgeti(L, 5, i);
jbe@140 398 luaL_addvalue(&buf);
jbe@140 399 }
jbe@140 400 luaL_pushresult(&buf);
jbe@305 401 lua_pushvalue(L, -2);
jbe@140 402 }
jbe@143 403 return 2;
jbe@140 404 }
jbe@140 405
jbe@140 406 static int moonbr_io_read_call(lua_State *L) {
jbe@140 407 lua_settop(L, 4);
jbe@140 408 lua_pushnil(L);
jbe@140 409 #if LUA_VERSION_NUM >= 503
jbe@140 410 return moonbr_io_read_cont(L, 0, 0);
jbe@140 411 #else
jbe@140 412 return moonbr_io_read_cont(L);
jbe@140 413 #endif
jbe@140 414 }
jbe@140 415
jbe@145 416 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 417
jbe@144 418 #if LUA_VERSION_NUM >= 503
jbe@144 419 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 420 #else
jbe@144 421 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 422 #endif
jbe@144 423 lua_Integer remaining, len;
jbe@144 424 size_t totallen = 0;
jbe@144 425 #if !(LUA_VERSION_NUM >= 503)
jbe@144 426 int ctx = 0;
jbe@144 427 lua_getctx(L, &ctx);
jbe@144 428 #endif
jbe@144 429 remaining = lua_tointeger(L, 3);
jbe@144 430 while (1) {
jbe@144 431 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 432 lua_pushvalue(L, 1);
jbe@144 433 lua_pushvalue(L, 3);
jbe@144 434 lua_pushvalue(L, 4);
jbe@144 435 lua_call(L, 3, 2);
jbe@144 436 if (lua_isnil(L, -2)) return 2;
jbe@144 437 lua_insert(L, -2);
jbe@144 438 len = lua_tointeger(L, -1);
jbe@144 439 lua_pop(L, 1);
jbe@144 440 totallen += len;
jbe@144 441 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 442 lua_pop(L, 1);
jbe@144 443 if (remaining >= 0 && len) {
jbe@144 444 remaining -= len;
jbe@144 445 lua_pushinteger(L, remaining);
jbe@144 446 lua_replace(L, 3);
jbe@144 447 }
jbe@144 448 lua_pushvalue(L, 2);
jbe@152 449 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 450 }
jbe@144 451 lua_pushinteger(L, totallen);
jbe@144 452 lua_pushvalue(L, -2);
jbe@144 453 return 2;
jbe@144 454 }
jbe@144 455
jbe@144 456 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 457 #if LUA_VERSION_NUM >= 503
jbe@144 458 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 459 #else
jbe@144 460 return moonbr_io_drain_cont(L);
jbe@144 461 #endif
jbe@144 462 }
jbe@144 463
jbe@145 464 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 465
jbe@250 466 #ifdef MOONBR_IO_USE_TLS
jbe@258 467
jbe@250 468 #define moonbr_io_write_tls(buf, buflen) \
jbe@250 469 if (handle->tls) { \
jbe@250 470 do { \
jbe@250 471 if (!handle->tlshandshake) { \
jbe@250 472 do written = tls_handshake(handle->tls); \
jbe@250 473 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 474 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 475 handle->tlshandshake = written; \
jbe@250 476 errno = EAGAIN; \
jbe@250 477 break; \
jbe@250 478 } \
jbe@250 479 if (written < 0) { \
jbe@250 480 lua_pushnil(L); \
jbe@250 481 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 482 return 2; \
jbe@250 483 } \
jbe@250 484 handle->tlshandshake = 1; \
jbe@250 485 } \
jbe@250 486 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250 487 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 488 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 489 errno = EAGAIN; \
jbe@250 490 break; \
jbe@250 491 } \
jbe@250 492 if (written < 0) { \
jbe@250 493 lua_pushnil(L); \
jbe@250 494 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 495 return 2; \
jbe@250 496 } \
jbe@250 497 } while (0); \
jbe@250 498 } \
jbe@250 499 else
jbe@258 500
jbe@258 501 #endif /* MOONBR_IO_USE_TLS */
jbe@250 502
jbe@81 503 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 504 moonbr_io_handle_t *handle;
jbe@80 505 int i, top;
jbe@80 506 const char *str;
jbe@92 507 size_t strlen;
jbe@103 508 ssize_t written;
jbe@80 509 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 510 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 511 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 512 if (handle->writeerr) {
jbe@80 513 lua_pushnil(L);
jbe@80 514 lua_pushliteral(L, "Previous write error");
jbe@80 515 return 2;
jbe@80 516 }
jbe@103 517 handle->writeerr = 1;
jbe@257 518 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84 519 top = lua_gettop(L);
jbe@81 520 lua_getuservalue(L, 1);
jbe@103 521 lua_getfield(L, -1, "writequeue");
jbe@84 522 for (i=2; i<=top; i++) {
jbe@84 523 luaL_checklstring(L, i, &strlen);
jbe@84 524 lua_pushvalue(L, i);
jbe@84 525 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 526 handle->writeleft += strlen;
jbe@81 527 }
jbe@132 528 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 529 while (handle->writeqout != handle->writeqin) {
jbe@83 530 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 531 str = lua_tolstring(L, -1, &strlen);
jbe@92 532 while (handle->writeqoff < strlen) {
jbe@103 533 if (
jbe@132 534 strlen - handle->writeqoff <
jbe@103 535 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 536 ) {
jbe@103 537 memcpy(
jbe@103 538 handle->writebuf + handle->writebufin,
jbe@103 539 str + handle->writeqoff,
jbe@103 540 strlen - handle->writeqoff
jbe@103 541 );
jbe@103 542 handle->writebufin += strlen - handle->writeqoff;
jbe@80 543 break;
jbe@80 544 } else {
jbe@103 545 memcpy(
jbe@103 546 handle->writebuf + handle->writebufin,
jbe@103 547 str + handle->writeqoff,
jbe@103 548 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 549 );
jbe@103 550 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228 551 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103 552 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257 553 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 554 #ifdef MOONBR_IO_USE_TLS
jbe@250 555 moonbr_io_write_tls(
jbe@250 556 handle->writebuf + handle->writebufout,
jbe@250 557 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250 558 )
jbe@249 559 #endif
jbe@103 560 written = write(
jbe@103 561 handle->fd,
jbe@103 562 handle->writebuf + handle->writebufout,
jbe@103 563 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 564 );
jbe@103 565 if (written < 0) {
jbe@81 566 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 567 goto moonbr_io_write_impl_block;
jbe@257 568 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103 569 } else {
jbe@103 570 handle->writebufout += written;
jbe@103 571 handle->writeleft -= written;
jbe@133 572 if (handle->flushedleft) {
jbe@133 573 if (written >= handle->flushedleft) {
jbe@133 574 handle->flushedleft = 0;
jbe@257 575 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 576 } else {
jbe@133 577 handle->flushedleft -= written;
jbe@133 578 }
jbe@133 579 }
jbe@80 580 }
jbe@80 581 }
jbe@103 582 handle->writebufin = 0;
jbe@103 583 handle->writebufout = 0;
jbe@80 584 }
jbe@80 585 }
jbe@81 586 handle->writeqoff = 0;
jbe@81 587 lua_pop(L, 1);
jbe@81 588 lua_pushnil(L);
jbe@83 589 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 590 }
jbe@132 591 while (handle->flushedleft) {
jbe@257 592 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 593 #ifdef MOONBR_IO_USE_TLS
jbe@250 594 moonbr_io_write_tls(
jbe@250 595 handle->writebuf + handle->writebufout,
jbe@250 596 handle->writebufin - handle->writebufout
jbe@250 597 )
jbe@249 598 #endif
jbe@132 599 written = write(
jbe@132 600 handle->fd,
jbe@132 601 handle->writebuf + handle->writebufout,
jbe@132 602 handle->writebufin - handle->writebufout
jbe@132 603 );
jbe@132 604 if (written < 0) {
jbe@132 605 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 606 goto moonbr_io_write_impl_block;
jbe@257 607 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132 608 } else {
jbe@132 609 handle->writebufout += written;
jbe@132 610 handle->writeleft -= written;
jbe@133 611 if (handle->flushedleft) {
jbe@133 612 if (written >= handle->flushedleft) {
jbe@133 613 handle->flushedleft = 0;
jbe@257 614 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 615 } else {
jbe@133 616 handle->flushedleft -= written;
jbe@133 617 }
jbe@133 618 }
jbe@81 619 }
jbe@132 620 }
jbe@132 621 if (handle->writebufout == handle->writebufin) {
jbe@103 622 handle->writebufin = 0;
jbe@103 623 handle->writebufout = 0;
jbe@81 624 }
jbe@103 625 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 626 else lua_pushvalue(L, 1);
jbe@103 627 handle->writeerr = 0;
jbe@80 628 return 1;
jbe@81 629 moonbr_io_write_impl_block:
jbe@91 630 lua_pushinteger(L, handle->writeleft);
jbe@103 631 handle->writeerr = 0;
jbe@81 632 return 1;
jbe@81 633 }
jbe@81 634
jbe@81 635 static int moonbr_io_write(lua_State *L) {
jbe@81 636 return moonbr_io_write_impl(L, 0, 0);
jbe@81 637 }
jbe@81 638
jbe@81 639 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 640 return moonbr_io_write_impl(L, 1, 0);
jbe@80 641 }
jbe@80 642
jbe@80 643 static int moonbr_io_flush(lua_State *L) {
jbe@81 644 return moonbr_io_write_impl(L, 0, 1);
jbe@81 645 }
jbe@81 646
jbe@81 647 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 648 return moonbr_io_write_impl(L, 1, 1);
jbe@80 649 }
jbe@80 650
jbe@145 651 #if LUA_VERSION_NUM >= 503
jbe@145 652 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 653 #else
jbe@145 654 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 655 #endif
jbe@145 656 while (1) {
jbe@145 657 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 658 lua_pushvalue(L, 1);
jbe@145 659 lua_call(L, 1, 2);
jbe@145 660 if (lua_isnil(L, -2)) return 2;
jbe@145 661 if (!lua_tointeger(L, -2)) {
jbe@145 662 lua_pushvalue(L, 1);
jbe@145 663 return 1;
jbe@145 664 }
jbe@145 665 lua_pop(L, 2);
jbe@145 666 lua_pushvalue(L, 2);
jbe@152 667 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 668 }
jbe@145 669 }
jbe@145 670
jbe@145 671 static int moonbr_io_write_call(lua_State *L) {
jbe@145 672 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 673 lua_insert(L, 3);
jbe@145 674 lua_pushvalue(L, 1);
jbe@145 675 lua_insert(L, 4);
jbe@145 676 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 677 if (lua_isnil(L, -2)) return 2;
jbe@145 678 if (!lua_tointeger(L, -2)) {
jbe@145 679 lua_pushvalue(L, 1);
jbe@145 680 return 1;
jbe@145 681 }
jbe@145 682 #if LUA_VERSION_NUM >= 503
jbe@145 683 return moonbr_io_write_cont(L, 0, 0);
jbe@145 684 #else
jbe@145 685 return moonbr_io_write_cont(L);
jbe@145 686 #endif
jbe@145 687 }
jbe@145 688
jbe@145 689 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 690
jbe@145 691 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 692 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 693 lua_insert(L, 3);
jbe@145 694 lua_pushvalue(L, 1);
jbe@145 695 lua_insert(L, 4);
jbe@145 696 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 697 if (lua_isnil(L, -2)) return 2;
jbe@145 698 if (!lua_tointeger(L, -2)) {
jbe@145 699 lua_pushvalue(L, 1);
jbe@145 700 return 1;
jbe@145 701 }
jbe@145 702 #if LUA_VERSION_NUM >= 503
jbe@145 703 return moonbr_io_write_cont(L, 0, 0);
jbe@145 704 #else
jbe@145 705 return moonbr_io_write_cont(L);
jbe@145 706 #endif
jbe@145 707 }
jbe@145 708
jbe@145 709 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 710
jbe@88 711 static int moonbr_io_finish(lua_State *L) {
jbe@88 712 moonbr_io_handle_t *handle;
jbe@88 713 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 714 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 715 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 716 if (handle->writeleft) {
jbe@94 717 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 718 lua_pushvalue(L, 1);
jbe@116 719 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 720 handle->finished = 1;
jbe@116 721 lua_error(L);
jbe@116 722 }
jbe@94 723 if (!lua_toboolean(L, -2)) {
jbe@94 724 handle->finished = 1;
jbe@94 725 return 2;
jbe@88 726 }
jbe@94 727 }
jbe@94 728 handle->finished = 1;
jbe@260 729 #ifdef MOONBR_IO_USE_TLS
jbe@260 730 if ((handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) && !handle->tls) {
jbe@260 731 #else
jbe@107 732 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@260 733 #endif
jbe@257 734 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94 735 } else {
jbe@251 736 #ifdef MOONBR_IO_USE_TLS
jbe@260 737 if (handle->tls) {
jbe@260 738 int status;
jbe@260 739 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260 740 do status = tls_close(handle->tls);
jbe@260 741 while (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT);
jbe@260 742 if (status) {
jbe@260 743 close(handle->fd);
jbe@260 744 handle->fd = -1;
jbe@260 745 lua_pushnil(L);
jbe@260 746 lua_pushstring(L, tls_error(handle->tls));
jbe@260 747 return 2;
jbe@260 748 }
jbe@260 749 }
jbe@251 750 #endif
jbe@94 751 if (close(handle->fd)) {
jbe@94 752 handle->fd = -1;
jbe@257 753 moonbr_io_return_errmsg();
jbe@94 754 }
jbe@94 755 handle->fd = -1; /* fake EOF on read */
jbe@88 756 }
jbe@88 757 lua_pushboolean(L, 1);
jbe@88 758 return 1;
jbe@88 759 }
jbe@88 760
jbe@261 761 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83 762 moonbr_io_handle_t *handle;
jbe@83 763 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 764 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259 765 if (!reset && handle->fd >= 0) {
jbe@87 766 if (handle->writeleft) {
jbe@261 767 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87 768 lua_pushvalue(L, 1);
jbe@116 769 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 770 handle->closed = 1;
jbe@116 771 close(handle->fd);
jbe@116 772 handle->fd = -1;
jbe@116 773 lua_error(L);
jbe@116 774 }
jbe@261 775 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87 776 if (!lua_toboolean(L, -2)) {
jbe@87 777 close(handle->fd);
jbe@87 778 handle->fd = -1;
jbe@87 779 return 2;
jbe@87 780 }
jbe@261 781 #if LUA_VERSION_NUM >= 503
jbe@261 782 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261 783 #else
jbe@261 784 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261 785 #endif
jbe@261 786 lua_pushliteral(L, "flush");
jbe@261 787 lua_pushvalue(L, -3);
jbe@261 788 return 2;
jbe@261 789 }
jbe@129 790 } else {
jbe@129 791 handle->closed = 1;
jbe@83 792 }
jbe@260 793 #ifdef MOONBR_IO_USE_TLS
jbe@260 794 if (handle->tls) {
jbe@260 795 int status;
jbe@261 796 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260 797 do status = tls_close(handle->tls);
jbe@261 798 while (!nonblocking && (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT));
jbe@261 799 if (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT) {
jbe@261 800 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261 801 lua_pushliteral(L, "close");
jbe@261 802 return 1;
jbe@261 803 }
jbe@260 804 if (status) {
jbe@260 805 close(handle->fd);
jbe@260 806 handle->fd = -1;
jbe@260 807 lua_pushnil(L);
jbe@260 808 lua_pushstring(L, tls_error(handle->tls));
jbe@260 809 return 2;
jbe@260 810 }
jbe@260 811 }
jbe@260 812 #endif
jbe@256 813 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257 814 moonbr_io_prepare_errmsg();
jbe@256 815 close(handle->fd);
jbe@256 816 handle->fd = -1;
jbe@257 817 moonbr_io_return_prepared_errmsg();
jbe@256 818 }
jbe@129 819 } else {
jbe@129 820 handle->closed = 1;
jbe@83 821 }
jbe@94 822 if (handle->fd >= 0) {
jbe@94 823 if (close(handle->fd)) {
jbe@94 824 handle->fd = -1;
jbe@257 825 moonbr_io_return_errmsg();
jbe@94 826 }
jbe@104 827 handle->fd = -1;
jbe@83 828 }
jbe@83 829 lua_pushboolean(L, 1);
jbe@83 830 return 1;
jbe@84 831
jbe@83 832 }
jbe@83 833
jbe@94 834 static int moonbr_io_close(lua_State *L) {
jbe@261 835 return moonbr_io_close_impl(L, 0, 0);
jbe@94 836 }
jbe@94 837
jbe@84 838 static int moonbr_io_reset(lua_State *L) {
jbe@261 839 return moonbr_io_close_impl(L, 0, 1);
jbe@84 840 }
jbe@84 841
jbe@108 842 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 843 moonbr_io_handle_t *handle;
jbe@88 844 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 845 if (handle->fd >= 0) {
jbe@218 846 lua_pushcfunction(L, moonbr_io_reset);
jbe@88 847 lua_pushvalue(L, 1);
jbe@88 848 lua_pushinteger(L, 0);
jbe@88 849 lua_call(L, 2, 0);
jbe@88 850 }
jbe@246 851 #ifdef MOONBR_IO_USE_TLS
jbe@246 852 if (handle->tls) {
jbe@246 853 tls_free(handle->tls);
jbe@246 854 handle->tls = NULL;
jbe@246 855 }
jbe@246 856 if (handle->servertls) {
jbe@246 857 tls_free(handle->servertls);
jbe@246 858 handle->servertls = NULL;
jbe@246 859 }
jbe@246 860 #endif
jbe@88 861 return 0;
jbe@88 862 }
jbe@88 863
jbe@100 864 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 865 moonbr_io_handle_t *handle;
jbe@88 866 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 867 if (!handle->closed) {
jbe@100 868 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 869 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 870 lua_call(L, 1, 0);
jbe@88 871 }
jbe@88 872 }
jbe@88 873
jbe@208 874 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208 875 int *fd;
jbe@311 876 int skip_peeraddr;
jbe@79 877 moonbr_io_handle_t *handle;
jbe@107 878 struct sockaddr addr;
jbe@107 879 socklen_t addrlen;
jbe@208 880 fd = lua_touserdata(L, 1);
jbe@311 881 skip_peeraddr = lua_toboolean(L, 2);
jbe@79 882 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208 883 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107 884 addrlen = sizeof(addr);
jbe@208 885 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107 886 if (errno != ENOTSOCK) {
jbe@257 887 moonbr_io_prepare_errmsg();
jbe@107 888 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 889 }
jbe@107 890 handle->issock = 0;
jbe@107 891 } else {
jbe@107 892 handle->issock = 1;
jbe@107 893 handle->addrfam = addr.sa_family;
jbe@107 894 }
jbe@94 895 handle->finished = 0;
jbe@94 896 handle->closed = 0;
jbe@81 897 handle->nonblocking = -1;
jbe@95 898 handle->nopush = -1;
jbe@85 899 handle->readerr = 0;
jbe@105 900 handle->readbufin = 0;
jbe@105 901 handle->readbufout = 0;
jbe@81 902 handle->writeerr = 0;
jbe@81 903 handle->writeleft = 0;
jbe@132 904 handle->flushedleft = 0;
jbe@83 905 handle->writeqin = 0;
jbe@83 906 handle->writeqout = 0;
jbe@81 907 handle->writeqoff = 0;
jbe@103 908 handle->writebufin = 0;
jbe@103 909 handle->writebufout = 0;
jbe@246 910 #ifdef MOONBR_IO_USE_TLS
jbe@246 911 handle->tls = NULL;
jbe@246 912 handle->servertls = NULL;
jbe@250 913 handle->tlshandshake = 0;
jbe@261 914 handle->tlsclosing = 0;
jbe@246 915 #endif
jbe@208 916 handle->fd = *fd; /* required for set_linger call */
jbe@256 917 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257 918 moonbr_io_prepare_errmsg();
jbe@256 919 handle->fd = -1;
jbe@256 920 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256 921 }
jbe@208 922 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238 923 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 924 lua_newtable(L); // uservalue
jbe@81 925 lua_newtable(L);
jbe@103 926 lua_setfield(L, -2, "writequeue");
jbe@79 927 lua_newtable(L); // public
jbe@107 928 if (handle->addrfam == AF_INET6) {
jbe@107 929 struct sockaddr_in6 addr_in6;
jbe@107 930 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 931 const char *addrstr;
jbe@107 932 addrlen = sizeof(addr_in6);
jbe@311 933 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311 934 * was reset. There seems to be no problem in practice though. */
jbe@208 935 if (getsockname(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 936 moonbr_io_prepare_errmsg();
jbe@107 937 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 938 }
jbe@107 939 if (addrlen > sizeof(addr_in6)) {
jbe@107 940 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 941 }
jbe@107 942 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 943 if (!addrstr) {
jbe@257 944 moonbr_io_prepare_errmsg();
jbe@107 945 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 946 } else {
jbe@107 947 lua_pushstring(L, addrstr);
jbe@107 948 lua_setfield(L, -2, "local_ip6");
jbe@107 949 }
jbe@107 950 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 951 lua_setfield(L, -2, "local_tcpport");
jbe@311 952 if (!skip_peeraddr) {
jbe@311 953 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311 954 * was reset. There seems to be no problem in practice though. */
jbe@311 955 if (getpeername(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@311 956 moonbr_io_prepare_errmsg();
jbe@311 957 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311 958 }
jbe@311 959 if (addrlen > sizeof(addr_in6)) {
jbe@311 960 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311 961 }
jbe@311 962 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311 963 if (!addrstr) {
jbe@311 964 moonbr_io_prepare_errmsg();
jbe@311 965 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311 966 } else {
jbe@311 967 lua_pushstring(L, addrstr);
jbe@311 968 lua_setfield(L, -2, "remote_ip6");
jbe@311 969 }
jbe@311 970 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@311 971 lua_setfield(L, -2, "remote_tcpport");
jbe@107 972 }
jbe@107 973 } else if (handle->addrfam == AF_INET) {
jbe@107 974 struct sockaddr_in addr_in;
jbe@107 975 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 976 const char *addrstr;
jbe@107 977 addrlen = sizeof(addr_in);
jbe@311 978 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311 979 * was reset. There seems to be no problem in practice though. */
jbe@208 980 if (getsockname(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 981 moonbr_io_prepare_errmsg();
jbe@107 982 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 983 }
jbe@107 984 if (addrlen > sizeof(addr_in)) {
jbe@107 985 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 986 }
jbe@107 987 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 988 if (!addrstr) {
jbe@257 989 moonbr_io_prepare_errmsg();
jbe@107 990 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 991 } else {
jbe@107 992 lua_pushstring(L, addrstr);
jbe@107 993 lua_setfield(L, -2, "local_ip4");
jbe@107 994 }
jbe@107 995 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 996 lua_setfield(L, -2, "local_tcpport");
jbe@311 997 if (!skip_peeraddr) {
jbe@311 998 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311 999 * was reset. There seems to be no problem in practice though. */
jbe@311 1000 if (getpeername(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@311 1001 moonbr_io_prepare_errmsg();
jbe@311 1002 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311 1003 }
jbe@311 1004 if (addrlen > sizeof(addr_in)) {
jbe@311 1005 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311 1006 }
jbe@311 1007 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311 1008 if (!addrstr) {
jbe@311 1009 moonbr_io_prepare_errmsg();
jbe@311 1010 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311 1011 } else {
jbe@311 1012 lua_pushstring(L, addrstr);
jbe@311 1013 lua_setfield(L, -2, "remote_ip4");
jbe@311 1014 }
jbe@311 1015 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@311 1016 lua_setfield(L, -2, "remote_tcpport");
jbe@107 1017 }
jbe@107 1018 }
jbe@238 1019 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1020 lua_setfield(L, -2, "public");
jbe@79 1021 lua_setuservalue(L, -2);
jbe@208 1022 handle->fd = *fd;
jbe@208 1023 *fd = -1; /* closing is now handled by garbage collection */
jbe@208 1024 return 1;
jbe@208 1025 }
jbe@208 1026
jbe@208 1027 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208 1028 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1029 lua_pushlightuserdata(L, &fd);
jbe@208 1030 if (lua_pcall(L, 1, 1, 0)) {
jbe@251 1031 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208 1032 lua_error(L);
jbe@208 1033 }
jbe@79 1034 }
jbe@79 1035
jbe@311 1036 void moonbr_io_pushhandle_skip_peeraddr(lua_State *L, int fd) {
jbe@311 1037 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@311 1038 lua_pushlightuserdata(L, &fd);
jbe@311 1039 lua_pushboolean(L, 1);
jbe@311 1040 if (lua_pcall(L, 2, 1, 0)) {
jbe@311 1041 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@311 1042 lua_error(L);
jbe@311 1043 }
jbe@311 1044 }
jbe@311 1045
jbe@79 1046 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 1047 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1048 luaL_checkany(L, 2);
jbe@79 1049 lua_getuservalue(L, 1);
jbe@79 1050 lua_getfield(L, -1, "public");
jbe@79 1051 lua_pushvalue(L, 2);
jbe@79 1052 lua_gettable(L, -2);
jbe@79 1053 return 1;
jbe@79 1054 }
jbe@79 1055
jbe@79 1056 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 1057 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1058 luaL_checkany(L, 2);
jbe@205 1059 luaL_checkany(L, 3);
jbe@79 1060 lua_getuservalue(L, 1);
jbe@79 1061 lua_getfield(L, -1, "public");
jbe@79 1062 lua_pushvalue(L, 2);
jbe@79 1063 lua_pushvalue(L, 3);
jbe@79 1064 lua_settable(L, -3);
jbe@79 1065 return 0;
jbe@79 1066 }
jbe@79 1067
jbe@111 1068 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 1069 const char *path;
jbe@111 1070 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 1071 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 1072 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 1073 ) - 1; /* one byte for termination */
jbe@111 1074 int sock;
jbe@111 1075 path = luaL_checkstring(L, 1);
jbe@111 1076 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 1077 strcpy(sockaddr.sun_path, path);
jbe@111 1078 sock = socket(
jbe@111 1079 PF_LOCAL,
jbe@111 1080 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 1081 0
jbe@111 1082 );
jbe@257 1083 if (sock < 0) moonbr_io_return_errmsg();
jbe@111 1084 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 1085 if (!nonblocking && errno == EINTR) {
jbe@257 1086 moonbr_io_prepare_errmsg();
jbe@111 1087 close(sock);
jbe@257 1088 moonbr_io_return_prepared_errmsg();
jbe@257 1089 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@111 1090 }
jbe@111 1091 moonbr_io_pushhandle(L, sock);
jbe@111 1092 return 1;
jbe@111 1093 }
jbe@111 1094
jbe@111 1095 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 1096 return moonbr_io_localconnect_impl(L, 0);
jbe@111 1097 }
jbe@111 1098
jbe@111 1099 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 1100 return moonbr_io_localconnect_impl(L, 1);
jbe@111 1101 }
jbe@111 1102
jbe@99 1103 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 1104 const char *host, *port;
jbe@98 1105 struct addrinfo hints = { 0, };
jbe@98 1106 struct addrinfo *res, *addrinfo;
jbe@98 1107 int errcode;
jbe@98 1108 int sock;
jbe@98 1109 host = luaL_checkstring(L, 1);
jbe@98 1110 port = luaL_checkstring(L, 2);
jbe@98 1111 hints.ai_family = AF_UNSPEC;
jbe@98 1112 hints.ai_socktype = SOCK_STREAM;
jbe@98 1113 hints.ai_protocol = IPPROTO_TCP;
jbe@98 1114 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 1115 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 1116 if (errcode) {
jbe@102 1117 freeaddrinfo(res);
jbe@98 1118 if (errcode == EAI_SYSTEM) {
jbe@257 1119 moonbr_io_prepare_errmsg();
jbe@98 1120 lua_pushnil(L);
jbe@98 1121 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 1122 } else {
jbe@98 1123 lua_pushnil(L);
jbe@98 1124 lua_pushstring(L, gai_strerror(errcode));
jbe@98 1125 }
jbe@98 1126 return 2;
jbe@98 1127 }
jbe@98 1128 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1129 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 1130 }
jbe@98 1131 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1132 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 1133 }
jbe@98 1134 addrinfo = res;
jbe@98 1135 moonbr_io_tcpconnect_found:
jbe@99 1136 sock = socket(
jbe@134 1137 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 1138 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 1139 addrinfo->ai_protocol
jbe@99 1140 );
jbe@98 1141 if (sock < 0) {
jbe@257 1142 moonbr_io_prepare_errmsg();
jbe@108 1143 freeaddrinfo(res);
jbe@257 1144 moonbr_io_return_prepared_errmsg();
jbe@98 1145 }
jbe@98 1146 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1147 freeaddrinfo(res);
jbe@99 1148 if (!nonblocking && errno == EINTR) {
jbe@257 1149 moonbr_io_prepare_errmsg();
jbe@99 1150 close(sock);
jbe@257 1151 moonbr_io_return_prepared_errmsg();
jbe@257 1152 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@108 1153 } else {
jbe@108 1154 freeaddrinfo(res);
jbe@98 1155 }
jbe@311 1156 if (nonblocking) {
jbe@311 1157 moonbr_io_pushhandle_skip_peeraddr(L, sock);
jbe@311 1158 if (addrinfo->ai_family == AF_INET6) {
jbe@311 1159 // TODO: fill remote_ip6 and remote_tcpport
jbe@311 1160 } else if (addrinfo->ai_family == AF_INET) {
jbe@311 1161 // TODO: fill remote_ip4 and remote_tcpport
jbe@311 1162 }
jbe@311 1163 } else {
jbe@311 1164 moonbr_io_pushhandle(L, sock);
jbe@311 1165 }
jbe@98 1166 return 1;
jbe@98 1167 }
jbe@98 1168
jbe@99 1169 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1170 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1171 }
jbe@99 1172
jbe@99 1173 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1174 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1175 }
jbe@99 1176
jbe@112 1177 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1178 moonbr_io_listener_t *listener;
jbe@112 1179 const char *path;
jbe@118 1180 struct stat sb;
jbe@112 1181 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1182 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1183 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1184 ) - 1; /* one byte for termination */
jbe@112 1185 int sock;
jbe@112 1186 path = luaL_checkstring(L, 1);
jbe@112 1187 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1188 strcpy(sockaddr.sun_path, path);
jbe@118 1189 if (stat(path, &sb) == 0) {
jbe@118 1190 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1191 }
jbe@112 1192 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1193 listener->fd = -1;
jbe@112 1194 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1195 sock = socket(
jbe@112 1196 PF_LOCAL,
jbe@112 1197 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1198 0
jbe@112 1199 );
jbe@257 1200 if (sock < 0) moonbr_io_return_errmsg();
jbe@112 1201 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257 1202 moonbr_io_prepare_errmsg();
jbe@112 1203 close(sock);
jbe@257 1204 moonbr_io_return_prepared_errmsg();
jbe@112 1205 }
jbe@112 1206 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1207 moonbr_io_prepare_errmsg();
jbe@112 1208 close(sock);
jbe@257 1209 moonbr_io_return_prepared_errmsg();
jbe@112 1210 }
jbe@112 1211 listener->fd = sock;
jbe@118 1212 listener->addrfam = AF_LOCAL;
jbe@112 1213 listener->nonblocking = -1;
jbe@112 1214 return 1;
jbe@112 1215 }
jbe@112 1216
jbe@108 1217 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1218 moonbr_io_listener_t *listener;
jbe@108 1219 const char *host, *port;
jbe@108 1220 struct addrinfo hints = { 0, };
jbe@108 1221 struct addrinfo *res, *addrinfo;
jbe@108 1222 int errcode;
jbe@108 1223 int sock;
jbe@108 1224 host = luaL_optstring(L, 1, NULL);
jbe@108 1225 port = luaL_checkstring(L, 2);
jbe@108 1226 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1227 listener->fd = -1;
jbe@108 1228 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1229 hints.ai_family = AF_UNSPEC;
jbe@108 1230 hints.ai_socktype = SOCK_STREAM;
jbe@108 1231 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1232 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1233 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1234 if (errcode) {
jbe@108 1235 freeaddrinfo(res);
jbe@108 1236 if (errcode == EAI_SYSTEM) {
jbe@257 1237 moonbr_io_prepare_errmsg();
jbe@108 1238 lua_pushnil(L);
jbe@108 1239 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1240 } else {
jbe@108 1241 lua_pushnil(L);
jbe@108 1242 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1243 }
jbe@108 1244 return 2;
jbe@108 1245 }
jbe@108 1246 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1247 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1248 }
jbe@108 1249 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1250 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1251 }
jbe@108 1252 addrinfo = res;
jbe@108 1253 moonbr_io_tcpconnect_found:
jbe@118 1254 listener->addrfam = addrinfo->ai_family;
jbe@108 1255 sock = socket(
jbe@134 1256 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1257 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1258 addrinfo->ai_protocol
jbe@108 1259 );
jbe@108 1260 if (sock < 0) {
jbe@257 1261 moonbr_io_prepare_errmsg();
jbe@108 1262 freeaddrinfo(res);
jbe@257 1263 moonbr_io_return_prepared_errmsg();
jbe@108 1264 }
jbe@120 1265 {
jbe@120 1266 static const int reuseval = 1;
jbe@120 1267 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257 1268 moonbr_io_prepare_errmsg();
jbe@120 1269 freeaddrinfo(res);
jbe@120 1270 close(sock);
jbe@120 1271 lua_pushnil(L);
jbe@120 1272 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1273 return 2;
jbe@120 1274 }
jbe@120 1275 }
jbe@108 1276 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257 1277 moonbr_io_prepare_errmsg();
jbe@108 1278 freeaddrinfo(res);
jbe@108 1279 close(sock);
jbe@257 1280 moonbr_io_return_prepared_errmsg();
jbe@108 1281 }
jbe@108 1282 freeaddrinfo(res);
jbe@108 1283 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1284 moonbr_io_prepare_errmsg();
jbe@108 1285 close(sock);
jbe@257 1286 moonbr_io_return_prepared_errmsg();
jbe@108 1287 }
jbe@108 1288 listener->fd = sock;
jbe@108 1289 listener->nonblocking = -1;
jbe@108 1290 return 1;
jbe@108 1291 }
jbe@108 1292
jbe@108 1293 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1294 moonbr_io_listener_t *listener;
jbe@108 1295 int fd;
jbe@108 1296 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1297 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1298 if (listener->nonblocking != nonblocking) {
jbe@108 1299 int flags;
jbe@108 1300 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1301 if (flags == -1) {
jbe@257 1302 moonbr_io_prepare_errmsg();
jbe@108 1303 close(listener->fd);
jbe@108 1304 listener->fd = -1;
jbe@108 1305 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1306 }
jbe@108 1307 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1308 else flags &= ~O_NONBLOCK;
jbe@108 1309 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257 1310 moonbr_io_prepare_errmsg();
jbe@108 1311 close(listener->fd);
jbe@108 1312 listener->fd = -1;
jbe@108 1313 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1314 }
jbe@108 1315 listener->nonblocking = nonblocking;
jbe@108 1316 }
jbe@108 1317 while (1) {
jbe@214 1318 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215 1319 fd = accept(listener->fd, NULL, NULL);
jbe@214 1320 if (fd != -1) {
jbe@214 1321 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257 1322 moonbr_io_prepare_errmsg();
jbe@214 1323 close(listener->fd);
jbe@214 1324 listener->fd = -1;
jbe@214 1325 close(fd);
jbe@214 1326 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214 1327 }
jbe@214 1328 }
jbe@214 1329 #else
jbe@108 1330 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214 1331 #endif
jbe@108 1332 if (fd < 0) {
jbe@108 1333 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1334 lua_pushboolean(L, 0);
jbe@108 1335 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1336 return 2;
jbe@257 1337 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108 1338 } else {
jbe@108 1339 moonbr_io_pushhandle(L, fd);
jbe@108 1340 return 1;
jbe@108 1341 }
jbe@108 1342 }
jbe@108 1343 }
jbe@108 1344
jbe@108 1345 static int moonbr_io_accept(lua_State *L) {
jbe@108 1346 return moonbr_io_accept_impl(L, 0);
jbe@108 1347 }
jbe@108 1348
jbe@108 1349 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1350 return moonbr_io_accept_impl(L, 1);
jbe@108 1351 }
jbe@108 1352
jbe@108 1353 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1354 moonbr_io_listener_t *listener;
jbe@118 1355 struct sockaddr_un addr;
jbe@118 1356 socklen_t addrlen;
jbe@118 1357 struct stat sb;
jbe@108 1358 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1359 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1360 addrlen = sizeof(addr);
jbe@118 1361 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1362 if (close(listener->fd)) {
jbe@257 1363 moonbr_io_prepare_errmsg();
jbe@108 1364 listener->fd = -1;
jbe@118 1365 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1366 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1367 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1368 }
jbe@118 1369 }
jbe@257 1370 moonbr_io_return_prepared_errmsg();
jbe@108 1371 }
jbe@108 1372 listener->fd = -1;
jbe@118 1373 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1374 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1375 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1376 }
jbe@118 1377 }
jbe@108 1378 lua_pushboolean(L, 1);
jbe@108 1379 return 1;
jbe@108 1380 }
jbe@108 1381
jbe@108 1382 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1383 moonbr_io_listener_t *listener;
jbe@108 1384 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1385 if (listener->fd >= 0) close(listener->fd);
jbe@108 1386 listener->fd = -1;
jbe@108 1387 return 0;
jbe@108 1388 }
jbe@108 1389
jbe@205 1390 static int moonbr_io_exec(lua_State *L) {
jbe@205 1391 char **argv;
jbe@205 1392 int i, argc;
jbe@205 1393 int sockin[2], sockout[2], sockerr[2];
jbe@205 1394 volatile int errorcond = 0;
jbe@213 1395 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205 1396 moonbr_io_child_t *child;
jbe@205 1397 argc = lua_gettop(L);
jbe@205 1398 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205 1399 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205 1400 argv[argc] = NULL;
jbe@208 1401 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208 1402 child->pid = 0;
jbe@303 1403 child->status_valid = 0;
jbe@208 1404 lua_newtable(L);
jbe@208 1405 lua_setuservalue(L, -2);
jbe@238 1406 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206 1407 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockin)) {
jbe@257 1408 moonbr_io_prepare_errmsg();
jbe@205 1409 lua_pushnil(L);
jbe@205 1410 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1411 return 2;
jbe@205 1412 }
jbe@206 1413 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockout)) {
jbe@257 1414 moonbr_io_prepare_errmsg();
jbe@205 1415 close(sockin[0]);
jbe@205 1416 close(sockin[1]);
jbe@205 1417 lua_pushnil(L);
jbe@205 1418 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1419 return 2;
jbe@205 1420 }
jbe@206 1421 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockerr)) {
jbe@257 1422 moonbr_io_prepare_errmsg();
jbe@205 1423 close(sockin[0]);
jbe@205 1424 close(sockin[1]);
jbe@205 1425 close(sockout[0]);
jbe@205 1426 close(sockout[1]);
jbe@205 1427 lua_pushnil(L);
jbe@205 1428 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1429 return 2;
jbe@205 1430 }
jbe@205 1431 child->pid = vfork();
jbe@205 1432 if (child->pid == -1) {
jbe@257 1433 moonbr_io_prepare_errmsg();
jbe@205 1434 close(sockin[0]);
jbe@205 1435 close(sockin[1]);
jbe@205 1436 close(sockout[0]);
jbe@205 1437 close(sockout[1]);
jbe@205 1438 close(sockerr[0]);
jbe@205 1439 close(sockerr[1]);
jbe@205 1440 lua_pushnil(L);
jbe@205 1441 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205 1442 return 2;
jbe@205 1443 }
jbe@205 1444 if (!child->pid) {
jbe@208 1445 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1446 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208 1447 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232 1448 closefrom(3);
jbe@208 1449 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1450 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1451 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205 1452 if (execvp(argv[0], argv)) {
jbe@205 1453 errorcond = 2;
jbe@205 1454 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205 1455 _exit(0);
jbe@205 1456 }
jbe@208 1457 moonbr_io_exec_error1:
jbe@206 1458 errorcond = 1;
jbe@206 1459 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206 1460 _exit(0);
jbe@205 1461 }
jbe@205 1462 close(sockin[1]);
jbe@205 1463 close(sockout[1]);
jbe@205 1464 close(sockerr[1]);
jbe@205 1465 if (errorcond) {
jbe@205 1466 int status;
jbe@205 1467 close(sockin[0]);
jbe@205 1468 close(sockout[0]);
jbe@205 1469 close(sockerr[0]);
jbe@205 1470 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1471 if (errno != EINTR) {
jbe@257 1472 moonbr_io_prepare_errmsg();
jbe@205 1473 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205 1474 }
jbe@205 1475 }
jbe@208 1476 child->pid = 0;
jbe@205 1477 lua_pushnil(L);
jbe@205 1478 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205 1479 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205 1480 return 2;
jbe@205 1481 }
jbe@208 1482 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1483 lua_pushlightuserdata(L, &sockin[0]);
jbe@208 1484 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1485 if (sockin[0] != -1) close(sockin[0]);
jbe@208 1486 close(sockout[0]);
jbe@208 1487 close(sockerr[0]);
jbe@208 1488 goto moonbr_io_exec_error2;
jbe@208 1489 }
jbe@205 1490 lua_setfield(L, -2, "stdin");
jbe@208 1491 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1492 lua_pushlightuserdata(L, &sockout[0]);
jbe@208 1493 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1494 if (sockout[0] != -1) close(sockout[0]);
jbe@208 1495 close(sockerr[0]);
jbe@208 1496 goto moonbr_io_exec_error2;
jbe@208 1497 }
jbe@205 1498 lua_setfield(L, -2, "stdout");
jbe@208 1499 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1500 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208 1501 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1502 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208 1503 goto moonbr_io_exec_error2;
jbe@208 1504 }
jbe@205 1505 lua_setfield(L, -2, "stderr");
jbe@205 1506 return 1;
jbe@208 1507 moonbr_io_exec_error2:
jbe@208 1508 {
jbe@208 1509 int status;
jbe@208 1510 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208 1511 if (errno != EINTR) {
jbe@257 1512 moonbr_io_prepare_errmsg();
jbe@208 1513 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208 1514 }
jbe@208 1515 }
jbe@208 1516 }
jbe@208 1517 child->pid = 0;
jbe@208 1518 return lua_error(L);
jbe@205 1519 }
jbe@205 1520
jbe@205 1521 static int moonbr_io_childindex(lua_State *L) {
jbe@205 1522 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1523 luaL_checkany(L, 2);
jbe@205 1524 lua_getuservalue(L, 1);
jbe@205 1525 lua_pushvalue(L, 2);
jbe@205 1526 lua_gettable(L, -2);
jbe@205 1527 if (lua_isnil(L, -1)) {
jbe@205 1528 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 1529 lua_pushvalue(L, 2);
jbe@205 1530 lua_gettable(L, -2);
jbe@205 1531 }
jbe@205 1532 return 1;
jbe@205 1533 }
jbe@205 1534
jbe@205 1535 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205 1536 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1537 luaL_checkany(L, 2);
jbe@205 1538 luaL_checkany(L, 3);
jbe@205 1539 lua_getuservalue(L, 1);
jbe@205 1540 lua_pushvalue(L, 2);
jbe@205 1541 lua_pushvalue(L, 3);
jbe@205 1542 lua_settable(L, -3);
jbe@205 1543 return 0;
jbe@205 1544 }
jbe@205 1545
jbe@205 1546 static int moonbr_io_childgc(lua_State *L) {
jbe@205 1547 moonbr_io_child_t *child;
jbe@205 1548 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1549 if (child->pid) {
jbe@205 1550 int status;
jbe@281 1551 int pid = child->pid;
jbe@281 1552 child->pid = 0;
jbe@281 1553 if (kill(pid, SIGKILL)) {
jbe@257 1554 moonbr_io_prepare_errmsg();
jbe@205 1555 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205 1556 }
jbe@281 1557 while (waitpid(pid, &status, 0) == -1) {
jbe@205 1558 if (errno != EINTR) {
jbe@257 1559 moonbr_io_prepare_errmsg();
jbe@205 1560 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205 1561 }
jbe@205 1562 }
jbe@205 1563 }
jbe@205 1564 return 0;
jbe@205 1565 }
jbe@205 1566
jbe@205 1567 static int moonbr_io_kill(lua_State *L) {
jbe@205 1568 moonbr_io_child_t *child;
jbe@205 1569 int sig;
jbe@205 1570 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@285 1571 sig = luaL_optinteger(L, 2, SIGKILL);
jbe@303 1572 if (!child->pid) {
jbe@303 1573 if (!child->status_valid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@303 1574 } else {
jbe@303 1575 if (kill(child->pid, sig)) {
jbe@303 1576 moonbr_io_prepare_errmsg();
jbe@303 1577 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@303 1578 }
jbe@205 1579 }
jbe@205 1580 lua_settop(L, 1);
jbe@205 1581 return 1;
jbe@205 1582 }
jbe@205 1583
jbe@205 1584 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205 1585 moonbr_io_child_t *child;
jbe@205 1586 int status;
jbe@205 1587 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@303 1588 if (!child->pid) {
jbe@303 1589 if (!child->status_valid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@303 1590 status = child->status;
jbe@303 1591 child->status_valid = 0;
jbe@303 1592 } else {
jbe@303 1593 pid_t waitedpid;
jbe@303 1594 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@303 1595 if (errno != EINTR) {
jbe@303 1596 moonbr_io_prepare_errmsg();
jbe@303 1597 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303 1598 }
jbe@205 1599 }
jbe@303 1600 if (!waitedpid) {
jbe@303 1601 lua_pushboolean(L, 0);
jbe@303 1602 lua_pushliteral(L, "Process is still running");
jbe@303 1603 return 2;
jbe@303 1604 }
jbe@303 1605 child->pid = 0;
jbe@205 1606 }
jbe@303 1607 if (WIFEXITED(status)) {
jbe@303 1608 lua_pushinteger(L, WEXITSTATUS(status));
jbe@303 1609 } else if (WIFSIGNALED(status)) {
jbe@303 1610 lua_pushinteger(L, -WTERMSIG(status));
jbe@205 1611 } else {
jbe@303 1612 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205 1613 }
jbe@303 1614 return 1;
jbe@205 1615 }
jbe@205 1616
jbe@205 1617 static int moonbr_io_wait(lua_State *L) {
jbe@205 1618 return moonbr_io_wait_impl(L, 0);
jbe@205 1619 }
jbe@205 1620
jbe@205 1621 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205 1622 return moonbr_io_wait_impl(L, 1);
jbe@205 1623 }
jbe@205 1624
jbe@205 1625 #if LUA_VERSION_NUM >= 503
jbe@205 1626 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205 1627 #else
jbe@205 1628 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205 1629 #endif
jbe@205 1630 #if !(LUA_VERSION_NUM >= 503)
jbe@205 1631 int ctx = 0;
jbe@205 1632 lua_getctx(L, &ctx);
jbe@205 1633 #endif
jbe@205 1634 while (1) {
jbe@205 1635 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205 1636 lua_pushvalue(L, 1);
jbe@205 1637 lua_call(L, 1, 1);
jbe@205 1638 if (!lua_isnil(L, -1)) break;
jbe@205 1639 lua_pushvalue(L, 2);
jbe@205 1640 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@205 1641 }
jbe@205 1642 return 1;
jbe@205 1643 }
jbe@205 1644
jbe@205 1645 static int moonbr_io_wait_call(lua_State *L) {
jbe@205 1646 lua_settop(L, 2);
jbe@205 1647 #if LUA_VERSION_NUM >= 503
jbe@205 1648 return moonbr_io_wait_cont(L, 0, 0);
jbe@205 1649 #else
jbe@205 1650 return moonbr_io_wait_cont(L);
jbe@205 1651 #endif
jbe@205 1652 }
jbe@205 1653
jbe@205 1654 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205 1655
jbe@284 1656 static void moonbr_io_sigterm_handler(int sig) {
jbe@284 1657 moonbr_io_sigterm_flag = 1;
jbe@266 1658 }
jbe@266 1659
jbe@297 1660 static void moonbr_io_sigchld_handler(int sig) {
jbe@297 1661 moonbr_io_sigchld_flag = 1;
jbe@297 1662 }
jbe@297 1663
jbe@288 1664 int moonbr_io_catch_sigterm(lua_State *L) {
jbe@284 1665 signal(SIGTERM, moonbr_io_sigterm_handler);
jbe@284 1666 return 0;
jbe@284 1667 }
jbe@284 1668
jbe@266 1669 static int moonbr_io_getpid(lua_State *L) {
jbe@266 1670 lua_pushinteger(L, getpid());
jbe@266 1671 return 1;
jbe@266 1672 }
jbe@266 1673
jbe@250 1674 #ifdef MOONBR_IO_USE_TLS
jbe@258 1675
jbe@250 1676 #define moonbr_io_poll_tls() \
jbe@250 1677 if (!handle->tlshandshake) { \
jbe@295 1678 force_wakeup = 1; \
jbe@295 1679 continue; \
jbe@250 1680 } \
jbe@250 1681 if (handle->tlshandshake == TLS_WANT_POLLIN) { \
jbe@250 1682 if (fd < 0) { \
jbe@295 1683 force_wakeup = 1; \
jbe@295 1684 continue; \
jbe@250 1685 } \
jbe@250 1686 FD_SET(fd, &readfds); \
jbe@250 1687 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1688 continue; \
jbe@250 1689 } \
jbe@250 1690 if (handle->tlshandshake == TLS_WANT_POLLOUT) { \
jbe@250 1691 if (fd < 0) { \
jbe@295 1692 force_wakeup = 1; \
jbe@295 1693 continue; \
jbe@250 1694 } \
jbe@250 1695 FD_SET(fd, &writefds); \
jbe@250 1696 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1697 continue; \
jbe@250 1698 } \
jbe@250 1699 while (0)
jbe@258 1700
jbe@258 1701 #endif /* MOONBR_IO_USE_TLS */
jbe@250 1702
jbe@106 1703 static int moonbr_io_poll(lua_State *L) {
jbe@106 1704 moonbr_io_handle_t *handle;
jbe@108 1705 moonbr_io_listener_t *listener;
jbe@296 1706 moonbr_io_child_t *child;
jbe@106 1707 int fd, isnum;
jbe@106 1708 int nfds = 0;
jbe@106 1709 fd_set readfds, writefds, exceptfds;
jbe@284 1710 struct timespec timeout = {0, };
jbe@295 1711 int force_wakeup = 0;
jbe@288 1712 int use_timeout = 0; // negative for negative timeout
jbe@284 1713 int check_sigterm = 0;
jbe@297 1714 int check_sigchld = 0;
jbe@298 1715 pid_t waitedpid;
jbe@284 1716 sigset_t mask, orig_mask;
jbe@106 1717 int status;
jbe@106 1718 FD_ZERO(&readfds);
jbe@106 1719 FD_ZERO(&writefds);
jbe@106 1720 FD_ZERO(&exceptfds);
jbe@106 1721 if (!lua_isnoneornil(L, 1)) {
jbe@106 1722 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1723 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1724 if (lua_toboolean(L, -1)) {
jbe@106 1725 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1726 if (handle) {
jbe@109 1727 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1728 fd = handle->fd;
jbe@247 1729 #if MOONBR_IO_USE_TLS
jbe@250 1730 moonbr_io_poll_tls();
jbe@247 1731 #endif
jbe@122 1732 if (
jbe@122 1733 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1734 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1735 ) {
jbe@295 1736 force_wakeup = 1;
jbe@295 1737 continue;
jbe@109 1738 }
jbe@106 1739 } else {
jbe@108 1740 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1741 if (listener) {
jbe@108 1742 fd = listener->fd;
jbe@108 1743 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1744 } else {
jbe@296 1745 child = luaL_testudata(L, -2, MOONBR_IO_CHILD_MT_REGKEY);
jbe@296 1746 if (child) {
jbe@299 1747 if (!child->pid) luaL_error(L, "Attemt to poll an already collected child process");
jbe@297 1748 if (!check_sigchld) {
jbe@297 1749 check_sigchld = 1;
jbe@297 1750 moonbr_io_sigchld_flag = 0;
jbe@297 1751 signal(SIGCHLD, moonbr_io_sigchld_handler);
jbe@297 1752 }
jbe@303 1753 if (child->status_valid) {
jbe@303 1754 force_wakeup = 1;
jbe@303 1755 } else {
jbe@303 1756 while ((waitedpid = waitpid(child->pid, &status, WNOHANG)) == -1) {
jbe@303 1757 if (errno != EINTR) {
jbe@303 1758 moonbr_io_prepare_errmsg();
jbe@303 1759 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303 1760 }
jbe@303 1761 }
jbe@303 1762 if (waitedpid) {
jbe@303 1763 child->pid = 0;
jbe@303 1764 child->status = status;
jbe@303 1765 child->status_valid = 1;
jbe@303 1766 force_wakeup = 1;
jbe@298 1767 }
jbe@298 1768 }
jbe@296 1769 continue;
jbe@296 1770 } else {
jbe@296 1771 fd = lua_tointegerx(L, -2, &isnum);
jbe@296 1772 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@296 1773 }
jbe@108 1774 }
jbe@106 1775 }
jbe@138 1776 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1777 FD_SET(fd, &readfds);
jbe@106 1778 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1779 }
jbe@106 1780 }
jbe@106 1781 }
jbe@106 1782 if (!lua_isnoneornil(L, 2)) {
jbe@106 1783 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1784 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1785 if (lua_toboolean(L, -1)) {
jbe@106 1786 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1787 if (handle) {
jbe@109 1788 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1789 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1790 fd = handle->fd;
jbe@247 1791 #if MOONBR_IO_USE_TLS
jbe@250 1792 moonbr_io_poll_tls();
jbe@247 1793 #endif
jbe@106 1794 } else {
jbe@108 1795 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1796 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1797 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1798 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1799 }
jbe@138 1800 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1801 FD_SET(fd, &writefds);
jbe@106 1802 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1803 }
jbe@106 1804 }
jbe@106 1805 }
jbe@106 1806 if (!lua_isnoneornil(L, 3)) {
jbe@106 1807 lua_Number n;
jbe@106 1808 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1809 if (isnum && n<0) {
jbe@288 1810 use_timeout = -1;
jbe@146 1811 } else if (isnum && n>=0 && n<100000000) {
jbe@288 1812 use_timeout = 1;
jbe@106 1813 timeout.tv_sec = n;
jbe@284 1814 timeout.tv_nsec = 1e9 * (n - timeout.tv_sec);
jbe@106 1815 } else {
jbe@106 1816 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1817 }
jbe@284 1818 }
jbe@295 1819 if (use_timeout < 0) force_wakeup = 1;
jbe@284 1820 if (!lua_isnoneornil(L, 4)) luaL_checktype(L, 4, LUA_TBOOLEAN);
jbe@284 1821 check_sigterm = lua_toboolean(L, 4);
jbe@297 1822 if ((check_sigterm || check_sigchld) && !force_wakeup) {
jbe@296 1823 sigemptyset(&mask);
jbe@296 1824 if (check_sigterm) sigaddset(&mask, SIGTERM);
jbe@297 1825 if (check_sigchld) sigaddset(&mask, SIGCHLD);
jbe@296 1826 if (sigprocmask(SIG_BLOCK, &mask, &orig_mask)) abort();
jbe@296 1827 }
jbe@296 1828 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295 1829 if (!force_wakeup) {
jbe@296 1830 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@295 1831 }
jbe@296 1832 lua_pushboolean(L, 0);
jbe@296 1833 lua_pushliteral(L, "SIGTERM received");
jbe@296 1834 lua_pushboolean(L, 1);
jbe@296 1835 return 3;
jbe@296 1836 }
jbe@297 1837 if (check_sigchld && !force_wakeup && moonbr_io_sigchld_flag) {
jbe@297 1838 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@297 1839 force_wakeup = 1;
jbe@288 1840 }
jbe@288 1841 if (use_timeout < 0) {
jbe@288 1842 lua_pushboolean(L, 0);
jbe@290 1843 lua_pushliteral(L, "Timeout");
jbe@288 1844 if (check_sigterm) {
jbe@288 1845 lua_pushboolean(L, 0);
jbe@288 1846 return 3;
jbe@288 1847 } else {
jbe@284 1848 return 2;
jbe@284 1849 }
jbe@284 1850 }
jbe@295 1851 if (!force_wakeup) {
jbe@295 1852 status = pselect(
jbe@295 1853 nfds, &readfds, &writefds, &exceptfds,
jbe@295 1854 use_timeout ? &timeout : NULL,
jbe@301 1855 (check_sigterm || check_sigchld) ? &orig_mask : NULL
jbe@295 1856 );
jbe@301 1857 if (check_sigterm || check_sigchld) {
jbe@295 1858 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@301 1859 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295 1860 lua_pushboolean(L, 0);
jbe@295 1861 lua_pushliteral(L, "SIGTERM received");
jbe@295 1862 lua_pushboolean(L, 1);
jbe@295 1863 return 3;
jbe@295 1864 }
jbe@295 1865 }
jbe@295 1866 if (status == -1) {
jbe@295 1867 if (errno == EINTR) {
jbe@295 1868 lua_pushboolean(L, 1);
jbe@295 1869 return 1;
jbe@295 1870 } else {
jbe@295 1871 moonbr_io_prepare_errmsg();
jbe@295 1872 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@295 1873 }
jbe@295 1874 } else if (status == 0) {
jbe@292 1875 lua_pushboolean(L, 0);
jbe@295 1876 lua_pushliteral(L, "Timeout");
jbe@295 1877 if (check_sigterm) {
jbe@295 1878 lua_pushboolean(L, 0);
jbe@295 1879 return 3;
jbe@295 1880 } else {
jbe@295 1881 return 2;
jbe@295 1882 }
jbe@292 1883 }
jbe@106 1884 }
jbe@295 1885 lua_pushboolean(L, 1);
jbe@295 1886 return 1;
jbe@106 1887 }
jbe@106 1888
jbe@115 1889 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1890 lua_Number sub;
jbe@115 1891 struct timespec tp;
jbe@115 1892 sub = luaL_optnumber(L, 1, 0);
jbe@115 1893 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1894 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1895 }
jbe@115 1896 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1897 return 1;
jbe@115 1898 }
jbe@115 1899
jbe@243 1900 #ifdef MOONBR_IO_USE_TLS
jbe@243 1901
jbe@243 1902 #define moonbr_io_tlsconf_string(name, field, func) \
jbe@243 1903 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1904 lua_getfield(L, 1, (field)); \
jbe@243 1905 valuetype = lua_type(L, -1); \
jbe@243 1906 if (valuetype != LUA_TNIL) { \
jbe@243 1907 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1908 value = lua_tostring(L, -1); \
jbe@252 1909 if (func(tlsconf->config, value)) { \
jbe@243 1910 lua_pushnil(L); \
jbe@243 1911 lua_pushfstring(L, "Could not set " name " \"%s\"", value); \
jbe@243 1912 return 2; \
jbe@243 1913 } \
jbe@243 1914 } \
jbe@243 1915 lua_pop(L, 1);
jbe@243 1916
jbe@243 1917 #define moonbr_io_tlsconf_binary(name, field, func) \
jbe@243 1918 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1919 lua_getfield(L, 1, (field)); \
jbe@243 1920 valuetype = lua_type(L, -1); \
jbe@243 1921 if (valuetype != LUA_TNIL) { \
jbe@243 1922 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1923 value = lua_tolstring(L, -1, &valuelen); \
jbe@252 1924 if (func(tlsconf->config, (void *)value, valuelen)) { \
jbe@243 1925 lua_pushnil(L); \
jbe@243 1926 lua_pushliteral(L, "Could not set " name); \
jbe@243 1927 return 2; \
jbe@243 1928 } \
jbe@243 1929 } \
jbe@243 1930 lua_pop(L, 1);
jbe@243 1931
jbe@243 1932 static int moonbr_io_tlsconf(lua_State *L) {
jbe@252 1933 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1934 int valuetype;
jbe@243 1935 const char *value;
jbe@243 1936 size_t valuelen;
jbe@243 1937 luaL_checktype(L, 1, LUA_TTABLE);
jbe@252 1938 tlsconf = lua_newuserdata(L, sizeof(moonbr_io_tlsconf_t));
jbe@252 1939 tlsconf->config = tls_config_new();
jbe@252 1940 if (!tlsconf->config) {
jbe@243 1941 return luaL_error(L, "Could not allocate memory for TLS configuration");
jbe@243 1942 }
jbe@243 1943 luaL_setmetatable(L, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@245 1944 lua_getfield(L, 1, "mode");
jbe@252 1945 value = lua_tostring(L, -1);
jbe@252 1946 if (value && !strcmp(value, "server")) tlsconf->server = 1;
jbe@252 1947 else if (value && !strcmp(value, "client")) tlsconf->server = 0;
jbe@252 1948 else luaL_argcheck(L, 0, 1, "field \"mode\" must be set to \"server\" or \"client\"");
jbe@245 1949 lua_pop(L, 1);
jbe@243 1950 moonbr_io_tlsconf_string("CA file", "ca_file", tls_config_set_ca_file);
jbe@243 1951 moonbr_io_tlsconf_string("CA path", "ca_path", tls_config_set_ca_path);
jbe@243 1952 moonbr_io_tlsconf_binary("CA", "ca_mem", tls_config_set_ca_mem);
jbe@243 1953 moonbr_io_tlsconf_string("certificate file", "cert_file", tls_config_set_cert_file);
jbe@243 1954 moonbr_io_tlsconf_binary("certificate", "cert_mem", tls_config_set_cert_mem);
jbe@243 1955 moonbr_io_tlsconf_string("key file", "key_file", tls_config_set_key_file);
jbe@243 1956 moonbr_io_tlsconf_binary("key", "key_mem", tls_config_set_key_mem);
jbe@245 1957 #if LUA_VERSION_NUM >= 503
jbe@245 1958 valuetype = lua_getfield(L, 1, "verify_client");
jbe@245 1959 #else
jbe@244 1960 lua_getfield(L, 1, "verify_client");
jbe@245 1961 #endif
jbe@244 1962 if (lua_toboolean(L, -1)) {
jbe@252 1963 value = lua_tostring(L, -1);
jbe@252 1964 if (value && !strcmp(value, "required")) {
jbe@252 1965 tls_config_verify_client(tlsconf->config);
jbe@252 1966 } else if (value && !strcmp(value, "optional")) {
jbe@252 1967 tls_config_verify_client_optional(tlsconf->config);
jbe@244 1968 } else {
jbe@244 1969 luaL_argcheck(L, 0, 1, "field \"verify_client\" must be set to \"required\", \"optional\", or be false or nil");
jbe@244 1970 }
jbe@244 1971 }
jbe@244 1972 lua_pop(L, 1);
jbe@254 1973 // TODO: configurable legacy support
jbe@254 1974 // tls_config_set_protocols(tlsconf->config, TLS_PROTOCOLS_ALL);
jbe@254 1975 // tls_config_set_ciphers(tlsconf->config, "legacy");
jbe@243 1976 return 1;
jbe@243 1977 }
jbe@243 1978
jbe@252 1979 static int moonbr_io_tlsconfgc(lua_State *L) {
jbe@252 1980 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1981 tlsconf = luaL_checkudata(L, 1, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@252 1982 if (tlsconf->config) tls_config_free(tlsconf->config);
jbe@252 1983 tlsconf->config = NULL;
jbe@243 1984 return 0;
jbe@243 1985 }
jbe@243 1986
jbe@246 1987 static int moonbr_io_starttls(lua_State *L) {
jbe@246 1988 moonbr_io_handle_t *handle;
jbe@252 1989 moonbr_io_tlsconf_t *tlsconf;
jbe@246 1990 const char *servername;
jbe@246 1991 struct tls *tls, *tls2;
jbe@246 1992 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@246 1993 if (lua_type(L, 2) == LUA_TTABLE) {
jbe@246 1994 lua_pushcfunction(L, moonbr_io_tlsconf);
jbe@246 1995 lua_pushvalue(L, 2);
jbe@246 1996 lua_call(L, 1, 2);
jbe@246 1997 if (lua_isnil(L, -2)) return 2;
jbe@246 1998 lua_pop(L, 1);
jbe@246 1999 lua_replace(L, 2);
jbe@246 2000 }
jbe@246 2001 tlsconf = luaL_checkudata(L, 2, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@246 2002 if (handle->closed) return luaL_error(L, "Attempt to start TLS on a closed I/O handle");
jbe@246 2003 if (handle->finished) return luaL_error(L, "Attempt to start TLS on a finished I/O handle");
jbe@247 2004 if (handle->tls) return luaL_error(L, "Attempt to start TLS twice");
jbe@246 2005 if (handle->readbufin || handle->writebufin) {
jbe@246 2006 return luaL_error(L, "Attempt to start TLS on an I/O handle with non-empty buffers");
jbe@246 2007 }
jbe@252 2008 if (tlsconf->server) tls = tls_server();
jbe@252 2009 else {
jbe@246 2010 servername = luaL_checkstring(L, 3);
jbe@246 2011 tls = tls_client();
jbe@246 2012 }
jbe@246 2013 if (!tls) {
jbe@246 2014 return luaL_error(L, "Could not allocate memory for TLS context");
jbe@246 2015 }
jbe@252 2016 if (tls_configure(tls, tlsconf->config)) goto moonbr_io_starttls_error;
jbe@252 2017 if (tlsconf->server) {
jbe@246 2018 if (tls_accept_socket(tls, &tls2, handle->fd)) goto moonbr_io_starttls_error;
jbe@246 2019 handle->servertls = tls;
jbe@246 2020 handle->tls = tls2;
jbe@246 2021 } else {
jbe@246 2022 if (tls_connect_socket(tls, handle->fd, servername)) goto moonbr_io_starttls_error;
jbe@246 2023 handle->tls = tls;
jbe@246 2024 }
jbe@246 2025 lua_settop(L, 1);
jbe@246 2026 return 1;
jbe@246 2027 moonbr_io_starttls_error:
jbe@246 2028 lua_pushnil(L);
jbe@246 2029 lua_pushstring(L, tls_error(tls));
jbe@246 2030 tls_free(tls);
jbe@246 2031 return 2;
jbe@246 2032 }
jbe@246 2033
jbe@258 2034 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2035
jbe@79 2036 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 2037 {"read", moonbr_io_read},
jbe@85 2038 {"read_nb", moonbr_io_read_nb},
jbe@140 2039 {"read_call", moonbr_io_read_call},
jbe@140 2040 {"read_yield", moonbr_io_read_yield},
jbe@86 2041 {"drain", moonbr_io_drain},
jbe@86 2042 {"drain_nb", moonbr_io_drain_nb},
jbe@144 2043 {"drain_call", moonbr_io_drain_call},
jbe@144 2044 {"drain_yield", moonbr_io_drain_yield},
jbe@80 2045 {"write", moonbr_io_write},
jbe@81 2046 {"write_nb", moonbr_io_write_nb},
jbe@145 2047 {"write_call", moonbr_io_write_call},
jbe@145 2048 {"write_yield", moonbr_io_write_yield},
jbe@80 2049 {"flush", moonbr_io_flush},
jbe@81 2050 {"flush_nb", moonbr_io_flush_nb},
jbe@145 2051 {"flush_call", moonbr_io_flush_call},
jbe@145 2052 {"flush_yield", moonbr_io_flush_yield},
jbe@88 2053 {"finish", moonbr_io_finish},
jbe@87 2054 {"close", moonbr_io_close},
jbe@85 2055 {"reset", moonbr_io_reset},
jbe@246 2056 #ifdef MOONBR_IO_USE_TLS
jbe@246 2057 {"starttls", moonbr_io_starttls},
jbe@246 2058 #endif
jbe@79 2059 {NULL, NULL}
jbe@79 2060 };
jbe@79 2061
jbe@79 2062 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 2063 {"__index", moonbr_io_handleindex},
jbe@79 2064 {"__newindex", moonbr_io_handlenewindex},
jbe@108 2065 {"__gc", moonbr_io_handlegc},
jbe@108 2066 {NULL, NULL}
jbe@108 2067 };
jbe@108 2068
jbe@108 2069 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 2070 {"accept", moonbr_io_accept},
jbe@108 2071 {"accept_nb", moonbr_io_accept_nb},
jbe@108 2072 {"close", moonbr_io_unlisten},
jbe@108 2073 {NULL, NULL}
jbe@108 2074 };
jbe@108 2075
jbe@108 2076 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 2077 {"__gc", moonbr_io_listenergc},
jbe@79 2078 {NULL, NULL}
jbe@79 2079 };
jbe@79 2080
jbe@205 2081 static const struct luaL_Reg moonbr_io_child_methods[] = {
jbe@205 2082 {"kill", moonbr_io_kill},
jbe@205 2083 {"wait", moonbr_io_wait},
jbe@205 2084 {"wait_nb", moonbr_io_wait_nb},
jbe@205 2085 {"wait_call", moonbr_io_wait_call},
jbe@205 2086 {"wait_yield", moonbr_io_wait_yield},
jbe@205 2087 {NULL, NULL}
jbe@205 2088 };
jbe@205 2089
jbe@205 2090 static const struct luaL_Reg moonbr_io_child_metamethods[] = {
jbe@205 2091 {"__index", moonbr_io_childindex},
jbe@205 2092 {"__newindex", moonbr_io_childnewindex},
jbe@205 2093 {"__gc", moonbr_io_childgc},
jbe@205 2094 {NULL, NULL}
jbe@205 2095 };
jbe@205 2096
jbe@79 2097 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 2098 {"localconnect", moonbr_io_localconnect},
jbe@111 2099 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 2100 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 2101 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 2102 {"locallisten", moonbr_io_locallisten},
jbe@108 2103 {"tcplisten", moonbr_io_tcplisten},
jbe@205 2104 {"exec", moonbr_io_exec},
jbe@288 2105 {"catch_sigterm", moonbr_io_catch_sigterm},
jbe@266 2106 {"getpid", moonbr_io_getpid},
jbe@106 2107 {"poll", moonbr_io_poll},
jbe@115 2108 {"timeref", moonbr_io_timeref},
jbe@243 2109 #ifdef MOONBR_IO_USE_TLS
jbe@243 2110 {"tlsconf", moonbr_io_tlsconf},
jbe@243 2111 #endif
jbe@79 2112 {NULL, NULL}
jbe@79 2113 };
jbe@79 2114
jbe@243 2115 #ifdef MOONBR_IO_USE_TLS
jbe@258 2116
jbe@243 2117 static const struct luaL_Reg moonbr_io_tlsconf_metamethods[] = {
jbe@243 2118 {"__gc", moonbr_io_tlsconfgc},
jbe@243 2119 {NULL, NULL}
jbe@243 2120 };
jbe@258 2121
jbe@258 2122 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2123
jbe@79 2124 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 2125
jbe@113 2126 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 2127
jbe@80 2128 lua_newtable(L); // module
jbe@80 2129
jbe@79 2130 lua_newtable(L); // public metatable
jbe@79 2131 lua_newtable(L); // handle methods
jbe@79 2132 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 2133 lua_pushvalue(L, -1);
jbe@146 2134 lua_setfield(L, -4, "handle_pt");
jbe@79 2135 lua_setfield(L, -2, "__index");
jbe@79 2136 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 2137
jbe@79 2138 lua_newtable(L); // handle metatable
jbe@79 2139 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 2140 lua_pushvalue(L, -1);
jbe@146 2141 lua_setfield(L, -3, "handle_mt");
jbe@79 2142 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 2143
jbe@108 2144 lua_newtable(L); // listener metatable
jbe@108 2145 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 2146 lua_newtable(L); // listener methods
jbe@108 2147 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 2148 lua_pushvalue(L, -1);
jbe@146 2149 lua_setfield(L, -4, "listener_pt");
jbe@108 2150 lua_setfield(L, -2, "__index");
jbe@146 2151 lua_pushvalue(L, -1);
jbe@146 2152 lua_setfield(L, -3, "listener_mt");
jbe@108 2153 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 2154
jbe@205 2155 lua_newtable(L); // child methods
jbe@205 2156 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205 2157 lua_pushvalue(L, -1);
jbe@205 2158 lua_setfield(L, -3, "child_pt");
jbe@205 2159 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 2160 lua_newtable(L); // child metatable
jbe@205 2161 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205 2162 lua_pushvalue(L, -1);
jbe@205 2163 lua_setfield(L, -3, "child_mt");
jbe@205 2164 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 2165
jbe@243 2166 #ifdef MOONBR_IO_USE_TLS
jbe@243 2167 if(tls_init()) {
jbe@243 2168 return luaL_error(L, "Could not initialize TLS library");
jbe@243 2169 }
jbe@243 2170 lua_newtable(L); // tlsconf metatable
jbe@243 2171 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243 2172 lua_pushvalue(L, -1);
jbe@243 2173 lua_setfield(L, -3, "tlsconf_mt");
jbe@243 2174 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243 2175 #endif
jbe@243 2176
jbe@205 2177 moonbr_io_pushhandle(L, 0);
jbe@205 2178 lua_setfield(L, -2, "stdin");
jbe@205 2179 moonbr_io_pushhandle(L, 1);
jbe@205 2180 lua_setfield(L, -2, "stdout");
jbe@205 2181 moonbr_io_pushhandle(L, 2);
jbe@205 2182 lua_setfield(L, -2, "stderr");
jbe@270 2183
jbe@79 2184 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 2185 return 1;
jbe@79 2186
jbe@79 2187 }
jbe@79 2188

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