moonbridge

annotate moonbridge_io.c @ 317:f6154dccdab8

find changesets by author, revision, files, or words in the commit message
Fixed year in LICENSE file
author jbe
date Thu Jul 26 21:43:14 2018 +0200 (2018-07-26)
parents 15132b3c053d
children 8c1aacea1210
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@313 58 #define MOONBR_IO_MODULE_REGKEY "moonbridge_io_module"
jbe@79 59 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 60 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 61 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205 62 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205 63 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@79 64
jbe@243 65 #ifdef MOONBR_IO_USE_TLS
jbe@258 66
jbe@243 67 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252 68
jbe@252 69 typedef struct {
jbe@252 70 struct tls_config *config;
jbe@252 71 int server;
jbe@252 72 } moonbr_io_tlsconf_t;
jbe@258 73
jbe@258 74 #endif /* MOONBR_IO_USE_TLS */
jbe@243 75
jbe@79 76 typedef struct {
jbe@79 77 int fd;
jbe@107 78 int issock;
jbe@107 79 sa_family_t addrfam;
jbe@94 80 int finished;
jbe@94 81 int closed;
jbe@81 82 int nonblocking;
jbe@95 83 int nopush;
jbe@85 84 int readerr;
jbe@105 85 int readbufin;
jbe@105 86 int readbufout;
jbe@81 87 int writeerr;
jbe@83 88 size_t writeleft;
jbe@132 89 size_t flushedleft;
jbe@83 90 #if LUA_VERSION_NUM >= 503
jbe@83 91 lua_Integer writeqin;
jbe@83 92 lua_Integer writeqout;
jbe@83 93 #else
jbe@83 94 int writeqin;
jbe@83 95 int writeqout;
jbe@83 96 #endif
jbe@83 97 size_t writeqoff;
jbe@103 98 int writebufin;
jbe@103 99 int writebufout;
jbe@85 100 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 101 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246 102 #ifdef MOONBR_IO_USE_TLS
jbe@250 103 struct tls *tls;
jbe@250 104 struct tls *servertls;
jbe@250 105 int tlshandshake;
jbe@261 106 int tlsclosing;
jbe@246 107 #endif
jbe@79 108 } moonbr_io_handle_t;
jbe@79 109
jbe@108 110 typedef struct {
jbe@108 111 int fd;
jbe@118 112 sa_family_t addrfam;
jbe@108 113 int nonblocking;
jbe@108 114 } moonbr_io_listener_t;
jbe@108 115
jbe@205 116 typedef struct {
jbe@205 117 pid_t pid;
jbe@303 118 int status;
jbe@303 119 int status_valid;
jbe@205 120 } moonbr_io_child_t;
jbe@205 121
jbe@293 122 volatile sig_atomic_t moonbr_io_sigterm_flag = 0;
jbe@297 123 volatile sig_atomic_t moonbr_io_sigchld_flag = 0;
jbe@284 124
jbe@148 125 static int moonbr_io_yield(lua_State *L) {
jbe@149 126 return lua_yield(L, lua_gettop(L));
jbe@140 127 }
jbe@140 128
jbe@140 129 #if LUA_VERSION_NUM >= 503
jbe@140 130 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 131 #else
jbe@140 132 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 133 #endif
jbe@140 134 return lua_gettop(L);
jbe@140 135 }
jbe@140 136
jbe@145 137 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 138 static int yieldfunc(lua_State *L) { \
jbe@145 139 int args; \
jbe@145 140 lua_pushcfunction(L, callfunc); \
jbe@145 141 lua_insert(L, 1); \
jbe@145 142 args = lua_gettop(L); \
jbe@148 143 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 144 lua_insert(L, 3); \
jbe@145 145 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 146 return lua_gettop(L); \
jbe@145 147 }
jbe@145 148
jbe@256 149 static int moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 150 int flags;
jbe@256 151 if (handle->nonblocking == nonblocking) return 0;
jbe@95 152 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@256 153 if (flags == -1) return -1;
jbe@95 154 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 155 else flags &= ~O_NONBLOCK;
jbe@256 156 if (fcntl(handle->fd, F_SETFL, flags) == -1) return -1;
jbe@95 157 handle->nonblocking = nonblocking;
jbe@256 158 return 0;
jbe@81 159 }
jbe@81 160
jbe@256 161 static int moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 162 struct linger lingerval = { 0, };
jbe@256 163 if (!handle->issock) return 0;
jbe@87 164 if (timeout >= 0) {
jbe@87 165 lingerval.l_onoff = 1;
jbe@87 166 lingerval.l_linger = timeout;
jbe@87 167 }
jbe@256 168 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) return -1;
jbe@256 169 return 0;
jbe@87 170 }
jbe@87 171
jbe@256 172 static inline int moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 173 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 174 if (
jbe@107 175 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 176 handle->nopush == nopush
jbe@256 177 ) return 0;
jbe@96 178 #if defined(TCP_NOPUSH)
jbe@256 179 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) return -1;
jbe@104 180 #elif defined(TCP_CORK)
jbe@256 181 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) return -1;
jbe@251 182 #endif
jbe@95 183 handle->nopush = nopush;
jbe@96 184 #else
jbe@96 185 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 186 #endif
jbe@256 187 return 0;
jbe@95 188 }
jbe@95 189
jbe@86 190 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 191 moonbr_io_handle_t *handle;
jbe@85 192 lua_Integer maxread;
jbe@85 193 const char *terminatorstr;
jbe@210 194 size_t terminatorlen;
jbe@210 195 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 196 luaL_Buffer luabuf;
jbe@85 197 size_t luabufcnt = 0;
jbe@105 198 int remaining;
jbe@85 199 char *terminatorpos;
jbe@103 200 ssize_t bytesread;
jbe@85 201 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153 202 maxread = luaL_optinteger(L, 2, -1);
jbe@85 203 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 204 if (terminatorlen) {
jbe@85 205 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 206 terminator = terminatorstr[0];
jbe@85 207 }
jbe@86 208 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 209 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 210 if (handle->readerr) {
jbe@85 211 lua_pushnil(L);
jbe@85 212 lua_pushliteral(L, "Previous read error");
jbe@85 213 return 2;
jbe@85 214 }
jbe@143 215 if (handle->fd < 0) {
jbe@143 216 /* fake EOF to simulate shutdown */
jbe@143 217 if (!drain) lua_pushliteral(L, "");
jbe@143 218 else lua_pushinteger(L, 0);
jbe@143 219 lua_pushliteral(L, "eof");
jbe@143 220 return 2;
jbe@143 221 }
jbe@105 222 handle->readerr = 1;
jbe@257 223 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@86 224 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 225 while (1) {
jbe@105 226 remaining = -1;
jbe@142 227 terminatorpos = NULL;
jbe@105 228 if (
jbe@153 229 maxread >= 0 &&
jbe@143 230 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 231 ) {
jbe@142 232 remaining = (size_t)maxread - luabufcnt;
jbe@193 233 if (terminatorlen) {
jbe@193 234 terminatorpos = memchr(
jbe@193 235 handle->readbuf + handle->readbufout,
jbe@193 236 terminator,
jbe@193 237 remaining
jbe@193 238 );
jbe@193 239 }
jbe@85 240 } else if (terminatorlen) {
jbe@105 241 terminatorpos = memchr(
jbe@105 242 handle->readbuf + handle->readbufout,
jbe@105 243 terminator,
jbe@105 244 handle->readbufin - handle->readbufout
jbe@105 245 );
jbe@85 246 }
jbe@142 247 if (terminatorpos) remaining = 1 + (
jbe@142 248 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 249 );
jbe@105 250 if (remaining >= 0) {
jbe@86 251 if (!drain) {
jbe@105 252 luaL_addlstring(
jbe@105 253 &luabuf,
jbe@105 254 handle->readbuf + handle->readbufout,
jbe@105 255 remaining
jbe@105 256 );
jbe@86 257 luaL_pushresult(&luabuf);
jbe@90 258 } else {
jbe@105 259 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 260 }
jbe@143 261 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 262 else lua_pushliteral(L, "maxlen");
jbe@105 263 handle->readbufout += remaining;
jbe@105 264 if (handle->readbufout == handle->readbufin) {
jbe@105 265 handle->readbufin = 0;
jbe@143 266 handle->readbufout = 0;
jbe@105 267 }
jbe@104 268 handle->readerr = 0;
jbe@143 269 return 2;
jbe@85 270 }
jbe@105 271 if (!drain) luaL_addlstring(
jbe@105 272 &luabuf,
jbe@105 273 handle->readbuf + handle->readbufout,
jbe@105 274 handle->readbufin - handle->readbufout
jbe@105 275 );
jbe@105 276 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 277 handle->readbufout = 0;
jbe@249 278 #ifdef MOONBR_IO_USE_TLS
jbe@249 279 if (handle->tls) {
jbe@250 280 do {
jbe@250 281 if (!handle->tlshandshake) {
jbe@250 282 do bytesread = tls_handshake(handle->tls);
jbe@250 283 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 284 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 285 handle->tlshandshake = bytesread;
jbe@250 286 errno = EAGAIN;
jbe@250 287 break;
jbe@250 288 }
jbe@250 289 if (bytesread < 0) {
jbe@250 290 lua_pushnil(L);
jbe@250 291 lua_pushstring(L, tls_error(handle->tls));
jbe@250 292 return 2;
jbe@250 293 }
jbe@250 294 handle->tlshandshake = 1;
jbe@250 295 }
jbe@250 296 do bytesread = tls_read(handle->tls, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@250 297 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 298 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 299 errno = EAGAIN;
jbe@250 300 break;
jbe@250 301 }
jbe@250 302 if (bytesread < 0) {
jbe@250 303 lua_pushnil(L);
jbe@250 304 lua_pushstring(L, tls_error(handle->tls));
jbe@250 305 return 2;
jbe@250 306 }
jbe@250 307 } while (0);
jbe@249 308 }
jbe@249 309 else
jbe@249 310 #endif
jbe@249 311 do bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@249 312 while (bytesread < 0 && (errno == EINTR));
jbe@105 313 if (
jbe@105 314 bytesread == 0 || (
jbe@105 315 nonblocking &&
jbe@105 316 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 317 )
jbe@105 318 ) {
jbe@105 319 handle->readbufin = 0;
jbe@143 320 if (!drain) luaL_pushresult(&luabuf);
jbe@143 321 else lua_pushinteger(L, luabufcnt);
jbe@143 322 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 323 else lua_pushliteral(L, "block");
jbe@105 324 handle->readerr = 0;
jbe@143 325 return 2;
jbe@105 326 }
jbe@257 327 if (bytesread < 0) moonbr_io_return_errmsg();
jbe@105 328 handle->readbufin = bytesread;
jbe@86 329 }
jbe@85 330 }
jbe@85 331
jbe@85 332 static int moonbr_io_read(lua_State *L) {
jbe@86 333 return moonbr_io_read_impl(L, 0, 0);
jbe@85 334 }
jbe@85 335
jbe@85 336 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 337 return moonbr_io_read_impl(L, 1, 0);
jbe@86 338 }
jbe@86 339
jbe@86 340 static int moonbr_io_drain(lua_State *L) {
jbe@86 341 return moonbr_io_read_impl(L, 0, 1);
jbe@86 342 }
jbe@86 343
jbe@86 344 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 345 return moonbr_io_read_impl(L, 1, 1);
jbe@85 346 }
jbe@85 347
jbe@140 348 #if LUA_VERSION_NUM >= 503
jbe@140 349 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 350 #else
jbe@140 351 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 352 #endif
jbe@143 353 lua_Integer remaining;
jbe@143 354 size_t len;
jbe@140 355 #if !(LUA_VERSION_NUM >= 503)
jbe@140 356 int ctx = 0;
jbe@314 357 int status = lua_getctx(L, &ctx);
jbe@140 358 #endif
jbe@140 359 remaining = lua_tointeger(L, 3);
jbe@140 360 while (1) {
jbe@140 361 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 362 lua_pushvalue(L, 1);
jbe@140 363 lua_pushvalue(L, 3);
jbe@140 364 lua_pushvalue(L, 4);
jbe@140 365 lua_call(L, 3, 2);
jbe@143 366 if (lua_isnil(L, -2)) return 2;
jbe@143 367 lua_insert(L, -2);
jbe@143 368 len = lua_rawlen(L, -1);
jbe@143 369 if (ctx == 0) {
jbe@143 370 lua_replace(L, 5);
jbe@143 371 ctx = 1;
jbe@143 372 } else if (ctx == 1) {
jbe@143 373 lua_pushvalue(L, 5);
jbe@143 374 lua_newtable(L);
jbe@143 375 lua_replace(L, 5);
jbe@304 376 lua_rawseti(L, 5, 1);
jbe@143 377 lua_rawseti(L, 5, 2);
jbe@143 378 ctx = 2;
jbe@140 379 } else {
jbe@143 380 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 381 }
jbe@144 382 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 383 lua_pop(L, 1);
jbe@144 384 if (remaining >= 0 && len) {
jbe@143 385 remaining -= len;
jbe@143 386 lua_pushinteger(L, remaining);
jbe@143 387 lua_replace(L, 3);
jbe@143 388 }
jbe@140 389 lua_pushvalue(L, 2);
jbe@313 390 lua_pushvalue(L, 1);
jbe@313 391 lua_pushliteral(L, "r");
jbe@314 392 lua_pushboolean(L, status != LUA_YIELD);
jbe@313 393 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@315 394 lua_callk(L, 4, 0, ctx, moonbr_io_read_cont);
jbe@314 395 status = LUA_YIELD;
jbe@140 396 }
jbe@305 397 if (ctx != 1) {
jbe@140 398 luaL_Buffer buf;
jbe@140 399 lua_Integer i, chunkcount;
jbe@140 400 chunkcount = lua_rawlen(L, 5);
jbe@140 401 luaL_buffinit(L, &buf);
jbe@140 402 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 403 lua_rawgeti(L, 5, i);
jbe@140 404 luaL_addvalue(&buf);
jbe@140 405 }
jbe@140 406 luaL_pushresult(&buf);
jbe@305 407 lua_pushvalue(L, -2);
jbe@140 408 }
jbe@143 409 return 2;
jbe@140 410 }
jbe@140 411
jbe@140 412 static int moonbr_io_read_call(lua_State *L) {
jbe@140 413 lua_settop(L, 4);
jbe@140 414 lua_pushnil(L);
jbe@140 415 #if LUA_VERSION_NUM >= 503
jbe@140 416 return moonbr_io_read_cont(L, 0, 0);
jbe@140 417 #else
jbe@140 418 return moonbr_io_read_cont(L);
jbe@140 419 #endif
jbe@140 420 }
jbe@140 421
jbe@145 422 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 423
jbe@144 424 #if LUA_VERSION_NUM >= 503
jbe@144 425 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 426 #else
jbe@144 427 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 428 #endif
jbe@144 429 lua_Integer remaining, len;
jbe@144 430 size_t totallen = 0;
jbe@144 431 #if !(LUA_VERSION_NUM >= 503)
jbe@144 432 int ctx = 0;
jbe@315 433 int status = lua_getctx(L, &ctx);
jbe@144 434 #endif
jbe@144 435 remaining = lua_tointeger(L, 3);
jbe@144 436 while (1) {
jbe@144 437 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 438 lua_pushvalue(L, 1);
jbe@144 439 lua_pushvalue(L, 3);
jbe@144 440 lua_pushvalue(L, 4);
jbe@144 441 lua_call(L, 3, 2);
jbe@144 442 if (lua_isnil(L, -2)) return 2;
jbe@144 443 lua_insert(L, -2);
jbe@144 444 len = lua_tointeger(L, -1);
jbe@144 445 lua_pop(L, 1);
jbe@144 446 totallen += len;
jbe@144 447 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 448 lua_pop(L, 1);
jbe@144 449 if (remaining >= 0 && len) {
jbe@144 450 remaining -= len;
jbe@144 451 lua_pushinteger(L, remaining);
jbe@144 452 lua_replace(L, 3);
jbe@144 453 }
jbe@144 454 lua_pushvalue(L, 2);
jbe@313 455 lua_pushvalue(L, 1);
jbe@313 456 lua_pushliteral(L, "r");
jbe@315 457 lua_pushboolean(L, status != LUA_YIELD);
jbe@313 458 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@315 459 lua_callk(L, 4, 0, ctx, moonbr_io_drain_cont);
jbe@315 460 status = LUA_YIELD;
jbe@144 461 }
jbe@144 462 lua_pushinteger(L, totallen);
jbe@144 463 lua_pushvalue(L, -2);
jbe@144 464 return 2;
jbe@144 465 }
jbe@144 466
jbe@144 467 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 468 #if LUA_VERSION_NUM >= 503
jbe@144 469 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 470 #else
jbe@144 471 return moonbr_io_drain_cont(L);
jbe@144 472 #endif
jbe@144 473 }
jbe@144 474
jbe@145 475 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 476
jbe@250 477 #ifdef MOONBR_IO_USE_TLS
jbe@258 478
jbe@250 479 #define moonbr_io_write_tls(buf, buflen) \
jbe@250 480 if (handle->tls) { \
jbe@250 481 do { \
jbe@250 482 if (!handle->tlshandshake) { \
jbe@250 483 do written = tls_handshake(handle->tls); \
jbe@250 484 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 485 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 486 handle->tlshandshake = written; \
jbe@250 487 errno = EAGAIN; \
jbe@250 488 break; \
jbe@250 489 } \
jbe@250 490 if (written < 0) { \
jbe@250 491 lua_pushnil(L); \
jbe@250 492 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 493 return 2; \
jbe@250 494 } \
jbe@250 495 handle->tlshandshake = 1; \
jbe@250 496 } \
jbe@250 497 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250 498 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 499 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 500 errno = EAGAIN; \
jbe@250 501 break; \
jbe@250 502 } \
jbe@250 503 if (written < 0) { \
jbe@250 504 lua_pushnil(L); \
jbe@250 505 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 506 return 2; \
jbe@250 507 } \
jbe@250 508 } while (0); \
jbe@250 509 } \
jbe@250 510 else
jbe@258 511
jbe@258 512 #endif /* MOONBR_IO_USE_TLS */
jbe@250 513
jbe@81 514 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 515 moonbr_io_handle_t *handle;
jbe@80 516 int i, top;
jbe@80 517 const char *str;
jbe@92 518 size_t strlen;
jbe@103 519 ssize_t written;
jbe@80 520 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 521 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 522 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 523 if (handle->writeerr) {
jbe@80 524 lua_pushnil(L);
jbe@80 525 lua_pushliteral(L, "Previous write error");
jbe@80 526 return 2;
jbe@80 527 }
jbe@103 528 handle->writeerr = 1;
jbe@257 529 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84 530 top = lua_gettop(L);
jbe@81 531 lua_getuservalue(L, 1);
jbe@103 532 lua_getfield(L, -1, "writequeue");
jbe@84 533 for (i=2; i<=top; i++) {
jbe@84 534 luaL_checklstring(L, i, &strlen);
jbe@84 535 lua_pushvalue(L, i);
jbe@84 536 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 537 handle->writeleft += strlen;
jbe@81 538 }
jbe@132 539 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 540 while (handle->writeqout != handle->writeqin) {
jbe@83 541 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 542 str = lua_tolstring(L, -1, &strlen);
jbe@92 543 while (handle->writeqoff < strlen) {
jbe@103 544 if (
jbe@132 545 strlen - handle->writeqoff <
jbe@103 546 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 547 ) {
jbe@103 548 memcpy(
jbe@103 549 handle->writebuf + handle->writebufin,
jbe@103 550 str + handle->writeqoff,
jbe@103 551 strlen - handle->writeqoff
jbe@103 552 );
jbe@103 553 handle->writebufin += strlen - handle->writeqoff;
jbe@80 554 break;
jbe@80 555 } else {
jbe@103 556 memcpy(
jbe@103 557 handle->writebuf + handle->writebufin,
jbe@103 558 str + handle->writeqoff,
jbe@103 559 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 560 );
jbe@103 561 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228 562 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103 563 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257 564 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 565 #ifdef MOONBR_IO_USE_TLS
jbe@250 566 moonbr_io_write_tls(
jbe@250 567 handle->writebuf + handle->writebufout,
jbe@250 568 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250 569 )
jbe@249 570 #endif
jbe@103 571 written = write(
jbe@103 572 handle->fd,
jbe@103 573 handle->writebuf + handle->writebufout,
jbe@103 574 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 575 );
jbe@103 576 if (written < 0) {
jbe@81 577 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 578 goto moonbr_io_write_impl_block;
jbe@257 579 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103 580 } else {
jbe@103 581 handle->writebufout += written;
jbe@103 582 handle->writeleft -= written;
jbe@133 583 if (handle->flushedleft) {
jbe@133 584 if (written >= handle->flushedleft) {
jbe@133 585 handle->flushedleft = 0;
jbe@257 586 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 587 } else {
jbe@133 588 handle->flushedleft -= written;
jbe@133 589 }
jbe@133 590 }
jbe@80 591 }
jbe@80 592 }
jbe@103 593 handle->writebufin = 0;
jbe@103 594 handle->writebufout = 0;
jbe@80 595 }
jbe@80 596 }
jbe@81 597 handle->writeqoff = 0;
jbe@81 598 lua_pop(L, 1);
jbe@81 599 lua_pushnil(L);
jbe@83 600 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 601 }
jbe@132 602 while (handle->flushedleft) {
jbe@257 603 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 604 #ifdef MOONBR_IO_USE_TLS
jbe@250 605 moonbr_io_write_tls(
jbe@250 606 handle->writebuf + handle->writebufout,
jbe@250 607 handle->writebufin - handle->writebufout
jbe@250 608 )
jbe@249 609 #endif
jbe@132 610 written = write(
jbe@132 611 handle->fd,
jbe@132 612 handle->writebuf + handle->writebufout,
jbe@132 613 handle->writebufin - handle->writebufout
jbe@132 614 );
jbe@132 615 if (written < 0) {
jbe@132 616 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 617 goto moonbr_io_write_impl_block;
jbe@257 618 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132 619 } else {
jbe@132 620 handle->writebufout += written;
jbe@132 621 handle->writeleft -= written;
jbe@133 622 if (handle->flushedleft) {
jbe@133 623 if (written >= handle->flushedleft) {
jbe@133 624 handle->flushedleft = 0;
jbe@257 625 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 626 } else {
jbe@133 627 handle->flushedleft -= written;
jbe@133 628 }
jbe@133 629 }
jbe@81 630 }
jbe@132 631 }
jbe@132 632 if (handle->writebufout == handle->writebufin) {
jbe@103 633 handle->writebufin = 0;
jbe@103 634 handle->writebufout = 0;
jbe@81 635 }
jbe@103 636 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 637 else lua_pushvalue(L, 1);
jbe@103 638 handle->writeerr = 0;
jbe@80 639 return 1;
jbe@81 640 moonbr_io_write_impl_block:
jbe@91 641 lua_pushinteger(L, handle->writeleft);
jbe@103 642 handle->writeerr = 0;
jbe@81 643 return 1;
jbe@81 644 }
jbe@81 645
jbe@81 646 static int moonbr_io_write(lua_State *L) {
jbe@81 647 return moonbr_io_write_impl(L, 0, 0);
jbe@81 648 }
jbe@81 649
jbe@81 650 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 651 return moonbr_io_write_impl(L, 1, 0);
jbe@80 652 }
jbe@80 653
jbe@80 654 static int moonbr_io_flush(lua_State *L) {
jbe@81 655 return moonbr_io_write_impl(L, 0, 1);
jbe@81 656 }
jbe@81 657
jbe@81 658 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 659 return moonbr_io_write_impl(L, 1, 1);
jbe@80 660 }
jbe@80 661
jbe@145 662 #if LUA_VERSION_NUM >= 503
jbe@145 663 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 664 #else
jbe@145 665 static int moonbr_io_write_cont(lua_State *L) {
jbe@314 666 int ctx = 0;
jbe@314 667 int status = lua_getctx(L, &ctx);
jbe@145 668 #endif
jbe@145 669 while (1) {
jbe@145 670 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 671 lua_pushvalue(L, 1);
jbe@145 672 lua_call(L, 1, 2);
jbe@145 673 if (lua_isnil(L, -2)) return 2;
jbe@145 674 if (!lua_tointeger(L, -2)) {
jbe@145 675 lua_pushvalue(L, 1);
jbe@145 676 return 1;
jbe@145 677 }
jbe@145 678 lua_pop(L, 2);
jbe@145 679 lua_pushvalue(L, 2);
jbe@313 680 lua_pushvalue(L, 1);
jbe@313 681 lua_pushliteral(L, "w");
jbe@314 682 lua_pushboolean(L, status != LUA_YIELD);
jbe@313 683 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@315 684 lua_callk(L, 4, 0, 0, moonbr_io_write_cont);
jbe@314 685 status = LUA_YIELD;
jbe@145 686 }
jbe@145 687 }
jbe@145 688
jbe@145 689 static int moonbr_io_write_call(lua_State *L) {
jbe@145 690 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 691 lua_insert(L, 3);
jbe@145 692 lua_pushvalue(L, 1);
jbe@145 693 lua_insert(L, 4);
jbe@145 694 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 695 if (lua_isnil(L, -2)) return 2;
jbe@145 696 if (!lua_tointeger(L, -2)) {
jbe@145 697 lua_pushvalue(L, 1);
jbe@145 698 return 1;
jbe@145 699 }
jbe@145 700 #if LUA_VERSION_NUM >= 503
jbe@145 701 return moonbr_io_write_cont(L, 0, 0);
jbe@145 702 #else
jbe@145 703 return moonbr_io_write_cont(L);
jbe@145 704 #endif
jbe@145 705 }
jbe@145 706
jbe@145 707 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 708
jbe@145 709 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 710 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 711 lua_insert(L, 3);
jbe@145 712 lua_pushvalue(L, 1);
jbe@145 713 lua_insert(L, 4);
jbe@145 714 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 715 if (lua_isnil(L, -2)) return 2;
jbe@145 716 if (!lua_tointeger(L, -2)) {
jbe@145 717 lua_pushvalue(L, 1);
jbe@145 718 return 1;
jbe@145 719 }
jbe@145 720 #if LUA_VERSION_NUM >= 503
jbe@145 721 return moonbr_io_write_cont(L, 0, 0);
jbe@145 722 #else
jbe@145 723 return moonbr_io_write_cont(L);
jbe@145 724 #endif
jbe@145 725 }
jbe@145 726
jbe@145 727 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 728
jbe@88 729 static int moonbr_io_finish(lua_State *L) {
jbe@88 730 moonbr_io_handle_t *handle;
jbe@88 731 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 732 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 733 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 734 if (handle->writeleft) {
jbe@94 735 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 736 lua_pushvalue(L, 1);
jbe@116 737 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 738 handle->finished = 1;
jbe@116 739 lua_error(L);
jbe@116 740 }
jbe@94 741 if (!lua_toboolean(L, -2)) {
jbe@94 742 handle->finished = 1;
jbe@94 743 return 2;
jbe@88 744 }
jbe@94 745 }
jbe@94 746 handle->finished = 1;
jbe@260 747 #ifdef MOONBR_IO_USE_TLS
jbe@260 748 if ((handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) && !handle->tls) {
jbe@260 749 #else
jbe@107 750 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@260 751 #endif
jbe@257 752 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94 753 } else {
jbe@251 754 #ifdef MOONBR_IO_USE_TLS
jbe@260 755 if (handle->tls) {
jbe@260 756 int status;
jbe@260 757 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260 758 do status = tls_close(handle->tls);
jbe@260 759 while (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT);
jbe@260 760 if (status) {
jbe@260 761 close(handle->fd);
jbe@260 762 handle->fd = -1;
jbe@260 763 lua_pushnil(L);
jbe@260 764 lua_pushstring(L, tls_error(handle->tls));
jbe@260 765 return 2;
jbe@260 766 }
jbe@260 767 }
jbe@251 768 #endif
jbe@94 769 if (close(handle->fd)) {
jbe@94 770 handle->fd = -1;
jbe@257 771 moonbr_io_return_errmsg();
jbe@94 772 }
jbe@94 773 handle->fd = -1; /* fake EOF on read */
jbe@88 774 }
jbe@88 775 lua_pushboolean(L, 1);
jbe@88 776 return 1;
jbe@88 777 }
jbe@88 778
jbe@261 779 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83 780 moonbr_io_handle_t *handle;
jbe@83 781 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 782 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259 783 if (!reset && handle->fd >= 0) {
jbe@87 784 if (handle->writeleft) {
jbe@261 785 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87 786 lua_pushvalue(L, 1);
jbe@116 787 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 788 handle->closed = 1;
jbe@116 789 close(handle->fd);
jbe@116 790 handle->fd = -1;
jbe@116 791 lua_error(L);
jbe@116 792 }
jbe@261 793 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87 794 if (!lua_toboolean(L, -2)) {
jbe@87 795 close(handle->fd);
jbe@87 796 handle->fd = -1;
jbe@87 797 return 2;
jbe@87 798 }
jbe@261 799 #if LUA_VERSION_NUM >= 503
jbe@261 800 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261 801 #else
jbe@261 802 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261 803 #endif
jbe@261 804 lua_pushliteral(L, "flush");
jbe@261 805 lua_pushvalue(L, -3);
jbe@261 806 return 2;
jbe@261 807 }
jbe@129 808 } else {
jbe@129 809 handle->closed = 1;
jbe@83 810 }
jbe@260 811 #ifdef MOONBR_IO_USE_TLS
jbe@260 812 if (handle->tls) {
jbe@260 813 int status;
jbe@261 814 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260 815 do status = tls_close(handle->tls);
jbe@261 816 while (!nonblocking && (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT));
jbe@261 817 if (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT) {
jbe@261 818 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261 819 lua_pushliteral(L, "close");
jbe@261 820 return 1;
jbe@261 821 }
jbe@260 822 if (status) {
jbe@260 823 close(handle->fd);
jbe@260 824 handle->fd = -1;
jbe@260 825 lua_pushnil(L);
jbe@260 826 lua_pushstring(L, tls_error(handle->tls));
jbe@260 827 return 2;
jbe@260 828 }
jbe@260 829 }
jbe@260 830 #endif
jbe@256 831 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257 832 moonbr_io_prepare_errmsg();
jbe@256 833 close(handle->fd);
jbe@256 834 handle->fd = -1;
jbe@257 835 moonbr_io_return_prepared_errmsg();
jbe@256 836 }
jbe@129 837 } else {
jbe@129 838 handle->closed = 1;
jbe@83 839 }
jbe@94 840 if (handle->fd >= 0) {
jbe@94 841 if (close(handle->fd)) {
jbe@94 842 handle->fd = -1;
jbe@257 843 moonbr_io_return_errmsg();
jbe@94 844 }
jbe@104 845 handle->fd = -1;
jbe@83 846 }
jbe@83 847 lua_pushboolean(L, 1);
jbe@83 848 return 1;
jbe@84 849
jbe@83 850 }
jbe@83 851
jbe@94 852 static int moonbr_io_close(lua_State *L) {
jbe@261 853 return moonbr_io_close_impl(L, 0, 0);
jbe@94 854 }
jbe@94 855
jbe@84 856 static int moonbr_io_reset(lua_State *L) {
jbe@261 857 return moonbr_io_close_impl(L, 0, 1);
jbe@84 858 }
jbe@84 859
jbe@108 860 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 861 moonbr_io_handle_t *handle;
jbe@88 862 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 863 if (handle->fd >= 0) {
jbe@218 864 lua_pushcfunction(L, moonbr_io_reset);
jbe@88 865 lua_pushvalue(L, 1);
jbe@88 866 lua_pushinteger(L, 0);
jbe@88 867 lua_call(L, 2, 0);
jbe@88 868 }
jbe@246 869 #ifdef MOONBR_IO_USE_TLS
jbe@246 870 if (handle->tls) {
jbe@246 871 tls_free(handle->tls);
jbe@246 872 handle->tls = NULL;
jbe@246 873 }
jbe@246 874 if (handle->servertls) {
jbe@246 875 tls_free(handle->servertls);
jbe@246 876 handle->servertls = NULL;
jbe@246 877 }
jbe@246 878 #endif
jbe@88 879 return 0;
jbe@88 880 }
jbe@88 881
jbe@100 882 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 883 moonbr_io_handle_t *handle;
jbe@88 884 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 885 if (!handle->closed) {
jbe@100 886 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 887 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 888 lua_call(L, 1, 0);
jbe@88 889 }
jbe@88 890 }
jbe@88 891
jbe@208 892 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208 893 int *fd;
jbe@311 894 int skip_peeraddr;
jbe@79 895 moonbr_io_handle_t *handle;
jbe@107 896 struct sockaddr addr;
jbe@107 897 socklen_t addrlen;
jbe@208 898 fd = lua_touserdata(L, 1);
jbe@311 899 skip_peeraddr = lua_toboolean(L, 2);
jbe@79 900 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208 901 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107 902 addrlen = sizeof(addr);
jbe@208 903 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107 904 if (errno != ENOTSOCK) {
jbe@257 905 moonbr_io_prepare_errmsg();
jbe@107 906 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 907 }
jbe@107 908 handle->issock = 0;
jbe@107 909 } else {
jbe@107 910 handle->issock = 1;
jbe@107 911 handle->addrfam = addr.sa_family;
jbe@107 912 }
jbe@94 913 handle->finished = 0;
jbe@94 914 handle->closed = 0;
jbe@81 915 handle->nonblocking = -1;
jbe@95 916 handle->nopush = -1;
jbe@85 917 handle->readerr = 0;
jbe@105 918 handle->readbufin = 0;
jbe@105 919 handle->readbufout = 0;
jbe@81 920 handle->writeerr = 0;
jbe@81 921 handle->writeleft = 0;
jbe@132 922 handle->flushedleft = 0;
jbe@83 923 handle->writeqin = 0;
jbe@83 924 handle->writeqout = 0;
jbe@81 925 handle->writeqoff = 0;
jbe@103 926 handle->writebufin = 0;
jbe@103 927 handle->writebufout = 0;
jbe@246 928 #ifdef MOONBR_IO_USE_TLS
jbe@246 929 handle->tls = NULL;
jbe@246 930 handle->servertls = NULL;
jbe@250 931 handle->tlshandshake = 0;
jbe@261 932 handle->tlsclosing = 0;
jbe@246 933 #endif
jbe@208 934 handle->fd = *fd; /* required for set_linger call */
jbe@256 935 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257 936 moonbr_io_prepare_errmsg();
jbe@256 937 handle->fd = -1;
jbe@256 938 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256 939 }
jbe@208 940 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238 941 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 942 lua_newtable(L); // uservalue
jbe@81 943 lua_newtable(L);
jbe@103 944 lua_setfield(L, -2, "writequeue");
jbe@79 945 lua_newtable(L); // public
jbe@107 946 if (handle->addrfam == AF_INET6) {
jbe@107 947 struct sockaddr_in6 addr_in6;
jbe@107 948 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 949 const char *addrstr;
jbe@107 950 addrlen = sizeof(addr_in6);
jbe@311 951 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311 952 * was reset. There seems to be no problem in practice though. */
jbe@208 953 if (getsockname(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 954 moonbr_io_prepare_errmsg();
jbe@107 955 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 956 }
jbe@107 957 if (addrlen > sizeof(addr_in6)) {
jbe@107 958 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 959 }
jbe@107 960 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 961 if (!addrstr) {
jbe@257 962 moonbr_io_prepare_errmsg();
jbe@107 963 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 964 } else {
jbe@107 965 lua_pushstring(L, addrstr);
jbe@107 966 lua_setfield(L, -2, "local_ip6");
jbe@107 967 }
jbe@107 968 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 969 lua_setfield(L, -2, "local_tcpport");
jbe@311 970 if (!skip_peeraddr) {
jbe@311 971 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311 972 * was reset. There seems to be no problem in practice though. */
jbe@311 973 if (getpeername(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@311 974 moonbr_io_prepare_errmsg();
jbe@311 975 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311 976 }
jbe@311 977 if (addrlen > sizeof(addr_in6)) {
jbe@311 978 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311 979 }
jbe@311 980 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311 981 if (!addrstr) {
jbe@311 982 moonbr_io_prepare_errmsg();
jbe@311 983 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311 984 } else {
jbe@311 985 lua_pushstring(L, addrstr);
jbe@311 986 lua_setfield(L, -2, "remote_ip6");
jbe@311 987 }
jbe@311 988 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@311 989 lua_setfield(L, -2, "remote_tcpport");
jbe@107 990 }
jbe@107 991 } else if (handle->addrfam == AF_INET) {
jbe@107 992 struct sockaddr_in addr_in;
jbe@107 993 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 994 const char *addrstr;
jbe@107 995 addrlen = sizeof(addr_in);
jbe@311 996 /* NOTE: According to documentation, getsockname() may fail if connection
jbe@311 997 * was reset. There seems to be no problem in practice though. */
jbe@208 998 if (getsockname(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 999 moonbr_io_prepare_errmsg();
jbe@107 1000 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 1001 }
jbe@107 1002 if (addrlen > sizeof(addr_in)) {
jbe@107 1003 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 1004 }
jbe@107 1005 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 1006 if (!addrstr) {
jbe@257 1007 moonbr_io_prepare_errmsg();
jbe@107 1008 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 1009 } else {
jbe@107 1010 lua_pushstring(L, addrstr);
jbe@107 1011 lua_setfield(L, -2, "local_ip4");
jbe@107 1012 }
jbe@107 1013 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 1014 lua_setfield(L, -2, "local_tcpport");
jbe@311 1015 if (!skip_peeraddr) {
jbe@311 1016 /* NOTE: According to documentation, getpeername() may fail if connection
jbe@311 1017 * was reset. There seems to be no problem in practice though. */
jbe@311 1018 if (getpeername(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@311 1019 moonbr_io_prepare_errmsg();
jbe@311 1020 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@311 1021 }
jbe@311 1022 if (addrlen > sizeof(addr_in)) {
jbe@311 1023 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@311 1024 }
jbe@311 1025 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@311 1026 if (!addrstr) {
jbe@311 1027 moonbr_io_prepare_errmsg();
jbe@311 1028 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@311 1029 } else {
jbe@311 1030 lua_pushstring(L, addrstr);
jbe@311 1031 lua_setfield(L, -2, "remote_ip4");
jbe@311 1032 }
jbe@311 1033 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@311 1034 lua_setfield(L, -2, "remote_tcpport");
jbe@107 1035 }
jbe@107 1036 }
jbe@238 1037 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1038 lua_setfield(L, -2, "public");
jbe@79 1039 lua_setuservalue(L, -2);
jbe@208 1040 handle->fd = *fd;
jbe@208 1041 *fd = -1; /* closing is now handled by garbage collection */
jbe@208 1042 return 1;
jbe@208 1043 }
jbe@208 1044
jbe@208 1045 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208 1046 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1047 lua_pushlightuserdata(L, &fd);
jbe@208 1048 if (lua_pcall(L, 1, 1, 0)) {
jbe@251 1049 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208 1050 lua_error(L);
jbe@208 1051 }
jbe@79 1052 }
jbe@79 1053
jbe@311 1054 void moonbr_io_pushhandle_skip_peeraddr(lua_State *L, int fd) {
jbe@311 1055 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@311 1056 lua_pushlightuserdata(L, &fd);
jbe@311 1057 lua_pushboolean(L, 1);
jbe@311 1058 if (lua_pcall(L, 2, 1, 0)) {
jbe@311 1059 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@311 1060 lua_error(L);
jbe@311 1061 }
jbe@311 1062 }
jbe@311 1063
jbe@79 1064 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 1065 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1066 luaL_checkany(L, 2);
jbe@79 1067 lua_getuservalue(L, 1);
jbe@79 1068 lua_getfield(L, -1, "public");
jbe@79 1069 lua_pushvalue(L, 2);
jbe@79 1070 lua_gettable(L, -2);
jbe@79 1071 return 1;
jbe@79 1072 }
jbe@79 1073
jbe@79 1074 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 1075 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1076 luaL_checkany(L, 2);
jbe@205 1077 luaL_checkany(L, 3);
jbe@79 1078 lua_getuservalue(L, 1);
jbe@79 1079 lua_getfield(L, -1, "public");
jbe@79 1080 lua_pushvalue(L, 2);
jbe@79 1081 lua_pushvalue(L, 3);
jbe@79 1082 lua_settable(L, -3);
jbe@79 1083 return 0;
jbe@79 1084 }
jbe@79 1085
jbe@111 1086 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 1087 const char *path;
jbe@111 1088 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 1089 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 1090 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 1091 ) - 1; /* one byte for termination */
jbe@111 1092 int sock;
jbe@111 1093 path = luaL_checkstring(L, 1);
jbe@111 1094 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 1095 strcpy(sockaddr.sun_path, path);
jbe@111 1096 sock = socket(
jbe@111 1097 PF_LOCAL,
jbe@111 1098 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 1099 0
jbe@111 1100 );
jbe@257 1101 if (sock < 0) moonbr_io_return_errmsg();
jbe@111 1102 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 1103 if (!nonblocking && errno == EINTR) {
jbe@257 1104 moonbr_io_prepare_errmsg();
jbe@111 1105 close(sock);
jbe@257 1106 moonbr_io_return_prepared_errmsg();
jbe@257 1107 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@111 1108 }
jbe@111 1109 moonbr_io_pushhandle(L, sock);
jbe@111 1110 return 1;
jbe@111 1111 }
jbe@111 1112
jbe@111 1113 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 1114 return moonbr_io_localconnect_impl(L, 0);
jbe@111 1115 }
jbe@111 1116
jbe@111 1117 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 1118 return moonbr_io_localconnect_impl(L, 1);
jbe@111 1119 }
jbe@111 1120
jbe@99 1121 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 1122 const char *host, *port;
jbe@98 1123 struct addrinfo hints = { 0, };
jbe@98 1124 struct addrinfo *res, *addrinfo;
jbe@98 1125 int errcode;
jbe@98 1126 int sock;
jbe@98 1127 host = luaL_checkstring(L, 1);
jbe@98 1128 port = luaL_checkstring(L, 2);
jbe@98 1129 hints.ai_family = AF_UNSPEC;
jbe@98 1130 hints.ai_socktype = SOCK_STREAM;
jbe@98 1131 hints.ai_protocol = IPPROTO_TCP;
jbe@98 1132 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 1133 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 1134 if (errcode) {
jbe@102 1135 freeaddrinfo(res);
jbe@98 1136 if (errcode == EAI_SYSTEM) {
jbe@257 1137 moonbr_io_prepare_errmsg();
jbe@98 1138 lua_pushnil(L);
jbe@98 1139 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 1140 } else {
jbe@98 1141 lua_pushnil(L);
jbe@98 1142 lua_pushstring(L, gai_strerror(errcode));
jbe@98 1143 }
jbe@98 1144 return 2;
jbe@98 1145 }
jbe@98 1146 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1147 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 1148 }
jbe@98 1149 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1150 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 1151 }
jbe@98 1152 addrinfo = res;
jbe@98 1153 moonbr_io_tcpconnect_found:
jbe@99 1154 sock = socket(
jbe@134 1155 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 1156 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 1157 addrinfo->ai_protocol
jbe@99 1158 );
jbe@98 1159 if (sock < 0) {
jbe@257 1160 moonbr_io_prepare_errmsg();
jbe@108 1161 freeaddrinfo(res);
jbe@257 1162 moonbr_io_return_prepared_errmsg();
jbe@98 1163 }
jbe@98 1164 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1165 freeaddrinfo(res);
jbe@99 1166 if (!nonblocking && errno == EINTR) {
jbe@257 1167 moonbr_io_prepare_errmsg();
jbe@99 1168 close(sock);
jbe@257 1169 moonbr_io_return_prepared_errmsg();
jbe@257 1170 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@108 1171 } else {
jbe@108 1172 freeaddrinfo(res);
jbe@98 1173 }
jbe@311 1174 if (nonblocking) {
jbe@311 1175 moonbr_io_pushhandle_skip_peeraddr(L, sock);
jbe@311 1176 if (addrinfo->ai_family == AF_INET6) {
jbe@311 1177 // TODO: fill remote_ip6 and remote_tcpport
jbe@311 1178 } else if (addrinfo->ai_family == AF_INET) {
jbe@311 1179 // TODO: fill remote_ip4 and remote_tcpport
jbe@311 1180 }
jbe@311 1181 } else {
jbe@311 1182 moonbr_io_pushhandle(L, sock);
jbe@311 1183 }
jbe@98 1184 return 1;
jbe@98 1185 }
jbe@98 1186
jbe@99 1187 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1188 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1189 }
jbe@99 1190
jbe@99 1191 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1192 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1193 }
jbe@99 1194
jbe@112 1195 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1196 moonbr_io_listener_t *listener;
jbe@112 1197 const char *path;
jbe@118 1198 struct stat sb;
jbe@112 1199 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1200 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1201 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1202 ) - 1; /* one byte for termination */
jbe@112 1203 int sock;
jbe@112 1204 path = luaL_checkstring(L, 1);
jbe@112 1205 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1206 strcpy(sockaddr.sun_path, path);
jbe@118 1207 if (stat(path, &sb) == 0) {
jbe@118 1208 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1209 }
jbe@112 1210 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1211 listener->fd = -1;
jbe@112 1212 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1213 sock = socket(
jbe@112 1214 PF_LOCAL,
jbe@112 1215 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1216 0
jbe@112 1217 );
jbe@257 1218 if (sock < 0) moonbr_io_return_errmsg();
jbe@112 1219 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257 1220 moonbr_io_prepare_errmsg();
jbe@112 1221 close(sock);
jbe@257 1222 moonbr_io_return_prepared_errmsg();
jbe@112 1223 }
jbe@112 1224 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1225 moonbr_io_prepare_errmsg();
jbe@112 1226 close(sock);
jbe@257 1227 moonbr_io_return_prepared_errmsg();
jbe@112 1228 }
jbe@112 1229 listener->fd = sock;
jbe@118 1230 listener->addrfam = AF_LOCAL;
jbe@112 1231 listener->nonblocking = -1;
jbe@112 1232 return 1;
jbe@112 1233 }
jbe@112 1234
jbe@108 1235 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1236 moonbr_io_listener_t *listener;
jbe@108 1237 const char *host, *port;
jbe@108 1238 struct addrinfo hints = { 0, };
jbe@108 1239 struct addrinfo *res, *addrinfo;
jbe@108 1240 int errcode;
jbe@108 1241 int sock;
jbe@108 1242 host = luaL_optstring(L, 1, NULL);
jbe@108 1243 port = luaL_checkstring(L, 2);
jbe@108 1244 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1245 listener->fd = -1;
jbe@108 1246 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1247 hints.ai_family = AF_UNSPEC;
jbe@108 1248 hints.ai_socktype = SOCK_STREAM;
jbe@108 1249 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1250 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1251 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1252 if (errcode) {
jbe@108 1253 freeaddrinfo(res);
jbe@108 1254 if (errcode == EAI_SYSTEM) {
jbe@257 1255 moonbr_io_prepare_errmsg();
jbe@108 1256 lua_pushnil(L);
jbe@108 1257 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1258 } else {
jbe@108 1259 lua_pushnil(L);
jbe@108 1260 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1261 }
jbe@108 1262 return 2;
jbe@108 1263 }
jbe@108 1264 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1265 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1266 }
jbe@108 1267 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1268 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1269 }
jbe@108 1270 addrinfo = res;
jbe@108 1271 moonbr_io_tcpconnect_found:
jbe@118 1272 listener->addrfam = addrinfo->ai_family;
jbe@108 1273 sock = socket(
jbe@134 1274 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1275 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1276 addrinfo->ai_protocol
jbe@108 1277 );
jbe@108 1278 if (sock < 0) {
jbe@257 1279 moonbr_io_prepare_errmsg();
jbe@108 1280 freeaddrinfo(res);
jbe@257 1281 moonbr_io_return_prepared_errmsg();
jbe@108 1282 }
jbe@120 1283 {
jbe@120 1284 static const int reuseval = 1;
jbe@120 1285 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257 1286 moonbr_io_prepare_errmsg();
jbe@120 1287 freeaddrinfo(res);
jbe@120 1288 close(sock);
jbe@120 1289 lua_pushnil(L);
jbe@120 1290 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1291 return 2;
jbe@120 1292 }
jbe@120 1293 }
jbe@108 1294 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257 1295 moonbr_io_prepare_errmsg();
jbe@108 1296 freeaddrinfo(res);
jbe@108 1297 close(sock);
jbe@257 1298 moonbr_io_return_prepared_errmsg();
jbe@108 1299 }
jbe@108 1300 freeaddrinfo(res);
jbe@108 1301 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1302 moonbr_io_prepare_errmsg();
jbe@108 1303 close(sock);
jbe@257 1304 moonbr_io_return_prepared_errmsg();
jbe@108 1305 }
jbe@108 1306 listener->fd = sock;
jbe@108 1307 listener->nonblocking = -1;
jbe@108 1308 return 1;
jbe@108 1309 }
jbe@108 1310
jbe@108 1311 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1312 moonbr_io_listener_t *listener;
jbe@108 1313 int fd;
jbe@108 1314 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1315 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1316 if (listener->nonblocking != nonblocking) {
jbe@108 1317 int flags;
jbe@108 1318 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1319 if (flags == -1) {
jbe@257 1320 moonbr_io_prepare_errmsg();
jbe@108 1321 close(listener->fd);
jbe@108 1322 listener->fd = -1;
jbe@108 1323 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1324 }
jbe@108 1325 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1326 else flags &= ~O_NONBLOCK;
jbe@108 1327 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257 1328 moonbr_io_prepare_errmsg();
jbe@108 1329 close(listener->fd);
jbe@108 1330 listener->fd = -1;
jbe@108 1331 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1332 }
jbe@108 1333 listener->nonblocking = nonblocking;
jbe@108 1334 }
jbe@108 1335 while (1) {
jbe@214 1336 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215 1337 fd = accept(listener->fd, NULL, NULL);
jbe@214 1338 if (fd != -1) {
jbe@214 1339 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257 1340 moonbr_io_prepare_errmsg();
jbe@214 1341 close(listener->fd);
jbe@214 1342 listener->fd = -1;
jbe@214 1343 close(fd);
jbe@214 1344 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214 1345 }
jbe@214 1346 }
jbe@214 1347 #else
jbe@108 1348 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214 1349 #endif
jbe@108 1350 if (fd < 0) {
jbe@108 1351 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1352 lua_pushboolean(L, 0);
jbe@108 1353 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1354 return 2;
jbe@257 1355 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108 1356 } else {
jbe@108 1357 moonbr_io_pushhandle(L, fd);
jbe@108 1358 return 1;
jbe@108 1359 }
jbe@108 1360 }
jbe@108 1361 }
jbe@108 1362
jbe@108 1363 static int moonbr_io_accept(lua_State *L) {
jbe@108 1364 return moonbr_io_accept_impl(L, 0);
jbe@108 1365 }
jbe@108 1366
jbe@108 1367 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1368 return moonbr_io_accept_impl(L, 1);
jbe@108 1369 }
jbe@108 1370
jbe@108 1371 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1372 moonbr_io_listener_t *listener;
jbe@118 1373 struct sockaddr_un addr;
jbe@118 1374 socklen_t addrlen;
jbe@118 1375 struct stat sb;
jbe@108 1376 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1377 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1378 addrlen = sizeof(addr);
jbe@118 1379 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1380 if (close(listener->fd)) {
jbe@257 1381 moonbr_io_prepare_errmsg();
jbe@108 1382 listener->fd = -1;
jbe@118 1383 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1384 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1385 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1386 }
jbe@118 1387 }
jbe@257 1388 moonbr_io_return_prepared_errmsg();
jbe@108 1389 }
jbe@108 1390 listener->fd = -1;
jbe@118 1391 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1392 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1393 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1394 }
jbe@118 1395 }
jbe@108 1396 lua_pushboolean(L, 1);
jbe@108 1397 return 1;
jbe@108 1398 }
jbe@108 1399
jbe@108 1400 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1401 moonbr_io_listener_t *listener;
jbe@108 1402 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1403 if (listener->fd >= 0) close(listener->fd);
jbe@108 1404 listener->fd = -1;
jbe@108 1405 return 0;
jbe@108 1406 }
jbe@108 1407
jbe@205 1408 static int moonbr_io_exec(lua_State *L) {
jbe@205 1409 char **argv;
jbe@205 1410 int i, argc;
jbe@205 1411 int sockin[2], sockout[2], sockerr[2];
jbe@205 1412 volatile int errorcond = 0;
jbe@213 1413 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205 1414 moonbr_io_child_t *child;
jbe@205 1415 argc = lua_gettop(L);
jbe@205 1416 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205 1417 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205 1418 argv[argc] = NULL;
jbe@208 1419 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208 1420 child->pid = 0;
jbe@303 1421 child->status_valid = 0;
jbe@208 1422 lua_newtable(L);
jbe@208 1423 lua_setuservalue(L, -2);
jbe@238 1424 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206 1425 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockin)) {
jbe@257 1426 moonbr_io_prepare_errmsg();
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@206 1431 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockout)) {
jbe@257 1432 moonbr_io_prepare_errmsg();
jbe@205 1433 close(sockin[0]);
jbe@205 1434 close(sockin[1]);
jbe@205 1435 lua_pushnil(L);
jbe@205 1436 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1437 return 2;
jbe@205 1438 }
jbe@206 1439 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockerr)) {
jbe@257 1440 moonbr_io_prepare_errmsg();
jbe@205 1441 close(sockin[0]);
jbe@205 1442 close(sockin[1]);
jbe@205 1443 close(sockout[0]);
jbe@205 1444 close(sockout[1]);
jbe@205 1445 lua_pushnil(L);
jbe@205 1446 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1447 return 2;
jbe@205 1448 }
jbe@205 1449 child->pid = vfork();
jbe@205 1450 if (child->pid == -1) {
jbe@257 1451 moonbr_io_prepare_errmsg();
jbe@205 1452 close(sockin[0]);
jbe@205 1453 close(sockin[1]);
jbe@205 1454 close(sockout[0]);
jbe@205 1455 close(sockout[1]);
jbe@205 1456 close(sockerr[0]);
jbe@205 1457 close(sockerr[1]);
jbe@205 1458 lua_pushnil(L);
jbe@205 1459 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205 1460 return 2;
jbe@205 1461 }
jbe@205 1462 if (!child->pid) {
jbe@208 1463 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1464 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208 1465 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232 1466 closefrom(3);
jbe@208 1467 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1468 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1469 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205 1470 if (execvp(argv[0], argv)) {
jbe@205 1471 errorcond = 2;
jbe@205 1472 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205 1473 _exit(0);
jbe@205 1474 }
jbe@208 1475 moonbr_io_exec_error1:
jbe@206 1476 errorcond = 1;
jbe@206 1477 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206 1478 _exit(0);
jbe@205 1479 }
jbe@205 1480 close(sockin[1]);
jbe@205 1481 close(sockout[1]);
jbe@205 1482 close(sockerr[1]);
jbe@205 1483 if (errorcond) {
jbe@205 1484 int status;
jbe@205 1485 close(sockin[0]);
jbe@205 1486 close(sockout[0]);
jbe@205 1487 close(sockerr[0]);
jbe@205 1488 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1489 if (errno != EINTR) {
jbe@257 1490 moonbr_io_prepare_errmsg();
jbe@205 1491 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205 1492 }
jbe@205 1493 }
jbe@208 1494 child->pid = 0;
jbe@205 1495 lua_pushnil(L);
jbe@205 1496 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205 1497 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205 1498 return 2;
jbe@205 1499 }
jbe@208 1500 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1501 lua_pushlightuserdata(L, &sockin[0]);
jbe@208 1502 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1503 if (sockin[0] != -1) close(sockin[0]);
jbe@208 1504 close(sockout[0]);
jbe@208 1505 close(sockerr[0]);
jbe@208 1506 goto moonbr_io_exec_error2;
jbe@208 1507 }
jbe@205 1508 lua_setfield(L, -2, "stdin");
jbe@208 1509 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1510 lua_pushlightuserdata(L, &sockout[0]);
jbe@208 1511 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1512 if (sockout[0] != -1) close(sockout[0]);
jbe@208 1513 close(sockerr[0]);
jbe@208 1514 goto moonbr_io_exec_error2;
jbe@208 1515 }
jbe@205 1516 lua_setfield(L, -2, "stdout");
jbe@208 1517 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1518 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208 1519 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1520 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208 1521 goto moonbr_io_exec_error2;
jbe@208 1522 }
jbe@205 1523 lua_setfield(L, -2, "stderr");
jbe@205 1524 return 1;
jbe@208 1525 moonbr_io_exec_error2:
jbe@208 1526 {
jbe@208 1527 int status;
jbe@208 1528 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208 1529 if (errno != EINTR) {
jbe@257 1530 moonbr_io_prepare_errmsg();
jbe@208 1531 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208 1532 }
jbe@208 1533 }
jbe@208 1534 }
jbe@208 1535 child->pid = 0;
jbe@208 1536 return lua_error(L);
jbe@205 1537 }
jbe@205 1538
jbe@205 1539 static int moonbr_io_childindex(lua_State *L) {
jbe@205 1540 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1541 luaL_checkany(L, 2);
jbe@205 1542 lua_getuservalue(L, 1);
jbe@205 1543 lua_pushvalue(L, 2);
jbe@205 1544 lua_gettable(L, -2);
jbe@205 1545 if (lua_isnil(L, -1)) {
jbe@205 1546 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 1547 lua_pushvalue(L, 2);
jbe@205 1548 lua_gettable(L, -2);
jbe@205 1549 }
jbe@205 1550 return 1;
jbe@205 1551 }
jbe@205 1552
jbe@205 1553 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205 1554 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1555 luaL_checkany(L, 2);
jbe@205 1556 luaL_checkany(L, 3);
jbe@205 1557 lua_getuservalue(L, 1);
jbe@205 1558 lua_pushvalue(L, 2);
jbe@205 1559 lua_pushvalue(L, 3);
jbe@205 1560 lua_settable(L, -3);
jbe@205 1561 return 0;
jbe@205 1562 }
jbe@205 1563
jbe@205 1564 static int moonbr_io_childgc(lua_State *L) {
jbe@205 1565 moonbr_io_child_t *child;
jbe@205 1566 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1567 if (child->pid) {
jbe@205 1568 int status;
jbe@281 1569 int pid = child->pid;
jbe@281 1570 child->pid = 0;
jbe@281 1571 if (kill(pid, SIGKILL)) {
jbe@257 1572 moonbr_io_prepare_errmsg();
jbe@205 1573 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205 1574 }
jbe@281 1575 while (waitpid(pid, &status, 0) == -1) {
jbe@205 1576 if (errno != EINTR) {
jbe@257 1577 moonbr_io_prepare_errmsg();
jbe@205 1578 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205 1579 }
jbe@205 1580 }
jbe@205 1581 }
jbe@205 1582 return 0;
jbe@205 1583 }
jbe@205 1584
jbe@205 1585 static int moonbr_io_kill(lua_State *L) {
jbe@205 1586 moonbr_io_child_t *child;
jbe@205 1587 int sig;
jbe@205 1588 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@285 1589 sig = luaL_optinteger(L, 2, SIGKILL);
jbe@303 1590 if (!child->pid) {
jbe@303 1591 if (!child->status_valid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@303 1592 } else {
jbe@303 1593 if (kill(child->pid, sig)) {
jbe@303 1594 moonbr_io_prepare_errmsg();
jbe@303 1595 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@303 1596 }
jbe@205 1597 }
jbe@205 1598 lua_settop(L, 1);
jbe@205 1599 return 1;
jbe@205 1600 }
jbe@205 1601
jbe@205 1602 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205 1603 moonbr_io_child_t *child;
jbe@205 1604 int status;
jbe@205 1605 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@303 1606 if (!child->pid) {
jbe@303 1607 if (!child->status_valid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@303 1608 status = child->status;
jbe@303 1609 child->status_valid = 0;
jbe@303 1610 } else {
jbe@303 1611 pid_t waitedpid;
jbe@303 1612 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@303 1613 if (errno != EINTR) {
jbe@303 1614 moonbr_io_prepare_errmsg();
jbe@303 1615 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303 1616 }
jbe@205 1617 }
jbe@303 1618 if (!waitedpid) {
jbe@303 1619 lua_pushboolean(L, 0);
jbe@303 1620 lua_pushliteral(L, "Process is still running");
jbe@303 1621 return 2;
jbe@303 1622 }
jbe@303 1623 child->pid = 0;
jbe@205 1624 }
jbe@303 1625 if (WIFEXITED(status)) {
jbe@303 1626 lua_pushinteger(L, WEXITSTATUS(status));
jbe@303 1627 } else if (WIFSIGNALED(status)) {
jbe@303 1628 lua_pushinteger(L, -WTERMSIG(status));
jbe@205 1629 } else {
jbe@303 1630 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205 1631 }
jbe@303 1632 return 1;
jbe@205 1633 }
jbe@205 1634
jbe@205 1635 static int moonbr_io_wait(lua_State *L) {
jbe@205 1636 return moonbr_io_wait_impl(L, 0);
jbe@205 1637 }
jbe@205 1638
jbe@205 1639 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205 1640 return moonbr_io_wait_impl(L, 1);
jbe@205 1641 }
jbe@205 1642
jbe@205 1643 #if LUA_VERSION_NUM >= 503
jbe@205 1644 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205 1645 #else
jbe@205 1646 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205 1647 #endif
jbe@205 1648 #if !(LUA_VERSION_NUM >= 503)
jbe@205 1649 int ctx = 0;
jbe@315 1650 int status = lua_getctx(L, &ctx);
jbe@205 1651 #endif
jbe@205 1652 while (1) {
jbe@205 1653 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205 1654 lua_pushvalue(L, 1);
jbe@205 1655 lua_call(L, 1, 1);
jbe@205 1656 if (!lua_isnil(L, -1)) break;
jbe@205 1657 lua_pushvalue(L, 2);
jbe@315 1658 lua_pushvalue(L, 1);
jbe@315 1659 lua_pushliteral(L, "r");
jbe@315 1660 lua_pushboolean(L, status != LUA_YIELD);
jbe@315 1661 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@205 1662 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@315 1663 status = LUA_YIELD;
jbe@205 1664 }
jbe@205 1665 return 1;
jbe@205 1666 }
jbe@205 1667
jbe@205 1668 static int moonbr_io_wait_call(lua_State *L) {
jbe@205 1669 lua_settop(L, 2);
jbe@205 1670 #if LUA_VERSION_NUM >= 503
jbe@205 1671 return moonbr_io_wait_cont(L, 0, 0);
jbe@205 1672 #else
jbe@205 1673 return moonbr_io_wait_cont(L);
jbe@205 1674 #endif
jbe@205 1675 }
jbe@205 1676
jbe@205 1677 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205 1678
jbe@284 1679 static void moonbr_io_sigterm_handler(int sig) {
jbe@284 1680 moonbr_io_sigterm_flag = 1;
jbe@266 1681 }
jbe@266 1682
jbe@297 1683 static void moonbr_io_sigchld_handler(int sig) {
jbe@297 1684 moonbr_io_sigchld_flag = 1;
jbe@297 1685 }
jbe@297 1686
jbe@288 1687 int moonbr_io_catch_sigterm(lua_State *L) {
jbe@284 1688 signal(SIGTERM, moonbr_io_sigterm_handler);
jbe@284 1689 return 0;
jbe@284 1690 }
jbe@284 1691
jbe@266 1692 static int moonbr_io_getpid(lua_State *L) {
jbe@266 1693 lua_pushinteger(L, getpid());
jbe@266 1694 return 1;
jbe@266 1695 }
jbe@266 1696
jbe@250 1697 #ifdef MOONBR_IO_USE_TLS
jbe@258 1698
jbe@250 1699 #define moonbr_io_poll_tls() \
jbe@250 1700 if (!handle->tlshandshake) { \
jbe@295 1701 force_wakeup = 1; \
jbe@295 1702 continue; \
jbe@250 1703 } \
jbe@250 1704 if (handle->tlshandshake == TLS_WANT_POLLIN) { \
jbe@250 1705 if (fd < 0) { \
jbe@295 1706 force_wakeup = 1; \
jbe@295 1707 continue; \
jbe@250 1708 } \
jbe@250 1709 FD_SET(fd, &readfds); \
jbe@250 1710 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1711 continue; \
jbe@250 1712 } \
jbe@250 1713 if (handle->tlshandshake == TLS_WANT_POLLOUT) { \
jbe@250 1714 if (fd < 0) { \
jbe@295 1715 force_wakeup = 1; \
jbe@295 1716 continue; \
jbe@250 1717 } \
jbe@250 1718 FD_SET(fd, &writefds); \
jbe@250 1719 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1720 continue; \
jbe@250 1721 } \
jbe@250 1722 while (0)
jbe@258 1723
jbe@258 1724 #endif /* MOONBR_IO_USE_TLS */
jbe@250 1725
jbe@106 1726 static int moonbr_io_poll(lua_State *L) {
jbe@106 1727 moonbr_io_handle_t *handle;
jbe@108 1728 moonbr_io_listener_t *listener;
jbe@296 1729 moonbr_io_child_t *child;
jbe@106 1730 int fd, isnum;
jbe@106 1731 int nfds = 0;
jbe@106 1732 fd_set readfds, writefds, exceptfds;
jbe@284 1733 struct timespec timeout = {0, };
jbe@295 1734 int force_wakeup = 0;
jbe@288 1735 int use_timeout = 0; // negative for negative timeout
jbe@284 1736 int check_sigterm = 0;
jbe@297 1737 int check_sigchld = 0;
jbe@298 1738 pid_t waitedpid;
jbe@284 1739 sigset_t mask, orig_mask;
jbe@106 1740 int status;
jbe@106 1741 FD_ZERO(&readfds);
jbe@106 1742 FD_ZERO(&writefds);
jbe@106 1743 FD_ZERO(&exceptfds);
jbe@106 1744 if (!lua_isnoneornil(L, 1)) {
jbe@106 1745 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1746 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1747 if (lua_toboolean(L, -1)) {
jbe@106 1748 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1749 if (handle) {
jbe@109 1750 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1751 fd = handle->fd;
jbe@247 1752 #if MOONBR_IO_USE_TLS
jbe@250 1753 moonbr_io_poll_tls();
jbe@247 1754 #endif
jbe@122 1755 if (
jbe@122 1756 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1757 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1758 ) {
jbe@295 1759 force_wakeup = 1;
jbe@295 1760 continue;
jbe@109 1761 }
jbe@106 1762 } else {
jbe@108 1763 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1764 if (listener) {
jbe@108 1765 fd = listener->fd;
jbe@108 1766 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1767 } else {
jbe@296 1768 child = luaL_testudata(L, -2, MOONBR_IO_CHILD_MT_REGKEY);
jbe@296 1769 if (child) {
jbe@299 1770 if (!child->pid) luaL_error(L, "Attemt to poll an already collected child process");
jbe@297 1771 if (!check_sigchld) {
jbe@297 1772 check_sigchld = 1;
jbe@297 1773 moonbr_io_sigchld_flag = 0;
jbe@297 1774 signal(SIGCHLD, moonbr_io_sigchld_handler);
jbe@297 1775 }
jbe@303 1776 if (child->status_valid) {
jbe@303 1777 force_wakeup = 1;
jbe@303 1778 } else {
jbe@303 1779 while ((waitedpid = waitpid(child->pid, &status, WNOHANG)) == -1) {
jbe@303 1780 if (errno != EINTR) {
jbe@303 1781 moonbr_io_prepare_errmsg();
jbe@303 1782 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@303 1783 }
jbe@303 1784 }
jbe@303 1785 if (waitedpid) {
jbe@303 1786 child->pid = 0;
jbe@303 1787 child->status = status;
jbe@303 1788 child->status_valid = 1;
jbe@303 1789 force_wakeup = 1;
jbe@298 1790 }
jbe@298 1791 }
jbe@296 1792 continue;
jbe@296 1793 } else {
jbe@296 1794 fd = lua_tointegerx(L, -2, &isnum);
jbe@296 1795 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@296 1796 }
jbe@108 1797 }
jbe@106 1798 }
jbe@138 1799 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1800 FD_SET(fd, &readfds);
jbe@106 1801 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1802 }
jbe@106 1803 }
jbe@106 1804 }
jbe@106 1805 if (!lua_isnoneornil(L, 2)) {
jbe@106 1806 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1807 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1808 if (lua_toboolean(L, -1)) {
jbe@106 1809 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1810 if (handle) {
jbe@109 1811 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1812 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1813 fd = handle->fd;
jbe@247 1814 #if MOONBR_IO_USE_TLS
jbe@250 1815 moonbr_io_poll_tls();
jbe@247 1816 #endif
jbe@106 1817 } else {
jbe@108 1818 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1819 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1820 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1821 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1822 }
jbe@138 1823 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1824 FD_SET(fd, &writefds);
jbe@106 1825 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1826 }
jbe@106 1827 }
jbe@106 1828 }
jbe@106 1829 if (!lua_isnoneornil(L, 3)) {
jbe@106 1830 lua_Number n;
jbe@106 1831 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1832 if (isnum && n<0) {
jbe@288 1833 use_timeout = -1;
jbe@146 1834 } else if (isnum && n>=0 && n<100000000) {
jbe@288 1835 use_timeout = 1;
jbe@106 1836 timeout.tv_sec = n;
jbe@284 1837 timeout.tv_nsec = 1e9 * (n - timeout.tv_sec);
jbe@106 1838 } else {
jbe@106 1839 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1840 }
jbe@284 1841 }
jbe@295 1842 if (use_timeout < 0) force_wakeup = 1;
jbe@284 1843 if (!lua_isnoneornil(L, 4)) luaL_checktype(L, 4, LUA_TBOOLEAN);
jbe@284 1844 check_sigterm = lua_toboolean(L, 4);
jbe@297 1845 if ((check_sigterm || check_sigchld) && !force_wakeup) {
jbe@296 1846 sigemptyset(&mask);
jbe@296 1847 if (check_sigterm) sigaddset(&mask, SIGTERM);
jbe@297 1848 if (check_sigchld) sigaddset(&mask, SIGCHLD);
jbe@296 1849 if (sigprocmask(SIG_BLOCK, &mask, &orig_mask)) abort();
jbe@296 1850 }
jbe@296 1851 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295 1852 if (!force_wakeup) {
jbe@296 1853 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@295 1854 }
jbe@296 1855 lua_pushboolean(L, 0);
jbe@296 1856 lua_pushliteral(L, "SIGTERM received");
jbe@296 1857 lua_pushboolean(L, 1);
jbe@296 1858 return 3;
jbe@296 1859 }
jbe@297 1860 if (check_sigchld && !force_wakeup && moonbr_io_sigchld_flag) {
jbe@297 1861 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@297 1862 force_wakeup = 1;
jbe@288 1863 }
jbe@288 1864 if (use_timeout < 0) {
jbe@288 1865 lua_pushboolean(L, 0);
jbe@290 1866 lua_pushliteral(L, "Timeout");
jbe@288 1867 if (check_sigterm) {
jbe@288 1868 lua_pushboolean(L, 0);
jbe@288 1869 return 3;
jbe@288 1870 } else {
jbe@284 1871 return 2;
jbe@284 1872 }
jbe@284 1873 }
jbe@295 1874 if (!force_wakeup) {
jbe@295 1875 status = pselect(
jbe@295 1876 nfds, &readfds, &writefds, &exceptfds,
jbe@295 1877 use_timeout ? &timeout : NULL,
jbe@301 1878 (check_sigterm || check_sigchld) ? &orig_mask : NULL
jbe@295 1879 );
jbe@301 1880 if (check_sigterm || check_sigchld) {
jbe@295 1881 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@301 1882 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295 1883 lua_pushboolean(L, 0);
jbe@295 1884 lua_pushliteral(L, "SIGTERM received");
jbe@295 1885 lua_pushboolean(L, 1);
jbe@295 1886 return 3;
jbe@295 1887 }
jbe@295 1888 }
jbe@295 1889 if (status == -1) {
jbe@295 1890 if (errno == EINTR) {
jbe@295 1891 lua_pushboolean(L, 1);
jbe@295 1892 return 1;
jbe@295 1893 } else {
jbe@295 1894 moonbr_io_prepare_errmsg();
jbe@295 1895 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@295 1896 }
jbe@295 1897 } else if (status == 0) {
jbe@292 1898 lua_pushboolean(L, 0);
jbe@295 1899 lua_pushliteral(L, "Timeout");
jbe@295 1900 if (check_sigterm) {
jbe@295 1901 lua_pushboolean(L, 0);
jbe@295 1902 return 3;
jbe@295 1903 } else {
jbe@295 1904 return 2;
jbe@295 1905 }
jbe@292 1906 }
jbe@106 1907 }
jbe@295 1908 lua_pushboolean(L, 1);
jbe@295 1909 return 1;
jbe@106 1910 }
jbe@106 1911
jbe@115 1912 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1913 lua_Number sub;
jbe@115 1914 struct timespec tp;
jbe@115 1915 sub = luaL_optnumber(L, 1, 0);
jbe@115 1916 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1917 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1918 }
jbe@115 1919 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1920 return 1;
jbe@115 1921 }
jbe@115 1922
jbe@243 1923 #ifdef MOONBR_IO_USE_TLS
jbe@243 1924
jbe@243 1925 #define moonbr_io_tlsconf_string(name, field, func) \
jbe@243 1926 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1927 lua_getfield(L, 1, (field)); \
jbe@243 1928 valuetype = lua_type(L, -1); \
jbe@243 1929 if (valuetype != LUA_TNIL) { \
jbe@243 1930 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1931 value = lua_tostring(L, -1); \
jbe@252 1932 if (func(tlsconf->config, value)) { \
jbe@243 1933 lua_pushnil(L); \
jbe@243 1934 lua_pushfstring(L, "Could not set " name " \"%s\"", value); \
jbe@243 1935 return 2; \
jbe@243 1936 } \
jbe@243 1937 } \
jbe@243 1938 lua_pop(L, 1);
jbe@243 1939
jbe@243 1940 #define moonbr_io_tlsconf_binary(name, field, func) \
jbe@243 1941 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1942 lua_getfield(L, 1, (field)); \
jbe@243 1943 valuetype = lua_type(L, -1); \
jbe@243 1944 if (valuetype != LUA_TNIL) { \
jbe@243 1945 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1946 value = lua_tolstring(L, -1, &valuelen); \
jbe@252 1947 if (func(tlsconf->config, (void *)value, valuelen)) { \
jbe@243 1948 lua_pushnil(L); \
jbe@243 1949 lua_pushliteral(L, "Could not set " name); \
jbe@243 1950 return 2; \
jbe@243 1951 } \
jbe@243 1952 } \
jbe@243 1953 lua_pop(L, 1);
jbe@243 1954
jbe@243 1955 static int moonbr_io_tlsconf(lua_State *L) {
jbe@252 1956 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1957 int valuetype;
jbe@243 1958 const char *value;
jbe@243 1959 size_t valuelen;
jbe@243 1960 luaL_checktype(L, 1, LUA_TTABLE);
jbe@252 1961 tlsconf = lua_newuserdata(L, sizeof(moonbr_io_tlsconf_t));
jbe@252 1962 tlsconf->config = tls_config_new();
jbe@252 1963 if (!tlsconf->config) {
jbe@243 1964 return luaL_error(L, "Could not allocate memory for TLS configuration");
jbe@243 1965 }
jbe@243 1966 luaL_setmetatable(L, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@245 1967 lua_getfield(L, 1, "mode");
jbe@252 1968 value = lua_tostring(L, -1);
jbe@252 1969 if (value && !strcmp(value, "server")) tlsconf->server = 1;
jbe@252 1970 else if (value && !strcmp(value, "client")) tlsconf->server = 0;
jbe@252 1971 else luaL_argcheck(L, 0, 1, "field \"mode\" must be set to \"server\" or \"client\"");
jbe@245 1972 lua_pop(L, 1);
jbe@243 1973 moonbr_io_tlsconf_string("CA file", "ca_file", tls_config_set_ca_file);
jbe@243 1974 moonbr_io_tlsconf_string("CA path", "ca_path", tls_config_set_ca_path);
jbe@243 1975 moonbr_io_tlsconf_binary("CA", "ca_mem", tls_config_set_ca_mem);
jbe@243 1976 moonbr_io_tlsconf_string("certificate file", "cert_file", tls_config_set_cert_file);
jbe@243 1977 moonbr_io_tlsconf_binary("certificate", "cert_mem", tls_config_set_cert_mem);
jbe@243 1978 moonbr_io_tlsconf_string("key file", "key_file", tls_config_set_key_file);
jbe@243 1979 moonbr_io_tlsconf_binary("key", "key_mem", tls_config_set_key_mem);
jbe@245 1980 #if LUA_VERSION_NUM >= 503
jbe@245 1981 valuetype = lua_getfield(L, 1, "verify_client");
jbe@245 1982 #else
jbe@244 1983 lua_getfield(L, 1, "verify_client");
jbe@245 1984 #endif
jbe@244 1985 if (lua_toboolean(L, -1)) {
jbe@252 1986 value = lua_tostring(L, -1);
jbe@252 1987 if (value && !strcmp(value, "required")) {
jbe@252 1988 tls_config_verify_client(tlsconf->config);
jbe@252 1989 } else if (value && !strcmp(value, "optional")) {
jbe@252 1990 tls_config_verify_client_optional(tlsconf->config);
jbe@244 1991 } else {
jbe@244 1992 luaL_argcheck(L, 0, 1, "field \"verify_client\" must be set to \"required\", \"optional\", or be false or nil");
jbe@244 1993 }
jbe@244 1994 }
jbe@244 1995 lua_pop(L, 1);
jbe@254 1996 // TODO: configurable legacy support
jbe@254 1997 // tls_config_set_protocols(tlsconf->config, TLS_PROTOCOLS_ALL);
jbe@254 1998 // tls_config_set_ciphers(tlsconf->config, "legacy");
jbe@243 1999 return 1;
jbe@243 2000 }
jbe@243 2001
jbe@252 2002 static int moonbr_io_tlsconfgc(lua_State *L) {
jbe@252 2003 moonbr_io_tlsconf_t *tlsconf;
jbe@243 2004 tlsconf = luaL_checkudata(L, 1, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@252 2005 if (tlsconf->config) tls_config_free(tlsconf->config);
jbe@252 2006 tlsconf->config = NULL;
jbe@243 2007 return 0;
jbe@243 2008 }
jbe@243 2009
jbe@246 2010 static int moonbr_io_starttls(lua_State *L) {
jbe@246 2011 moonbr_io_handle_t *handle;
jbe@252 2012 moonbr_io_tlsconf_t *tlsconf;
jbe@246 2013 const char *servername;
jbe@246 2014 struct tls *tls, *tls2;
jbe@246 2015 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@246 2016 if (lua_type(L, 2) == LUA_TTABLE) {
jbe@246 2017 lua_pushcfunction(L, moonbr_io_tlsconf);
jbe@246 2018 lua_pushvalue(L, 2);
jbe@246 2019 lua_call(L, 1, 2);
jbe@246 2020 if (lua_isnil(L, -2)) return 2;
jbe@246 2021 lua_pop(L, 1);
jbe@246 2022 lua_replace(L, 2);
jbe@246 2023 }
jbe@246 2024 tlsconf = luaL_checkudata(L, 2, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@246 2025 if (handle->closed) return luaL_error(L, "Attempt to start TLS on a closed I/O handle");
jbe@246 2026 if (handle->finished) return luaL_error(L, "Attempt to start TLS on a finished I/O handle");
jbe@247 2027 if (handle->tls) return luaL_error(L, "Attempt to start TLS twice");
jbe@246 2028 if (handle->readbufin || handle->writebufin) {
jbe@246 2029 return luaL_error(L, "Attempt to start TLS on an I/O handle with non-empty buffers");
jbe@246 2030 }
jbe@252 2031 if (tlsconf->server) tls = tls_server();
jbe@252 2032 else {
jbe@246 2033 servername = luaL_checkstring(L, 3);
jbe@246 2034 tls = tls_client();
jbe@246 2035 }
jbe@246 2036 if (!tls) {
jbe@246 2037 return luaL_error(L, "Could not allocate memory for TLS context");
jbe@246 2038 }
jbe@252 2039 if (tls_configure(tls, tlsconf->config)) goto moonbr_io_starttls_error;
jbe@252 2040 if (tlsconf->server) {
jbe@246 2041 if (tls_accept_socket(tls, &tls2, handle->fd)) goto moonbr_io_starttls_error;
jbe@246 2042 handle->servertls = tls;
jbe@246 2043 handle->tls = tls2;
jbe@246 2044 } else {
jbe@246 2045 if (tls_connect_socket(tls, handle->fd, servername)) goto moonbr_io_starttls_error;
jbe@246 2046 handle->tls = tls;
jbe@246 2047 }
jbe@246 2048 lua_settop(L, 1);
jbe@246 2049 return 1;
jbe@246 2050 moonbr_io_starttls_error:
jbe@246 2051 lua_pushnil(L);
jbe@246 2052 lua_pushstring(L, tls_error(tls));
jbe@246 2053 tls_free(tls);
jbe@246 2054 return 2;
jbe@246 2055 }
jbe@246 2056
jbe@258 2057 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2058
jbe@79 2059 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 2060 {"read", moonbr_io_read},
jbe@85 2061 {"read_nb", moonbr_io_read_nb},
jbe@140 2062 {"read_call", moonbr_io_read_call},
jbe@140 2063 {"read_yield", moonbr_io_read_yield},
jbe@86 2064 {"drain", moonbr_io_drain},
jbe@86 2065 {"drain_nb", moonbr_io_drain_nb},
jbe@144 2066 {"drain_call", moonbr_io_drain_call},
jbe@144 2067 {"drain_yield", moonbr_io_drain_yield},
jbe@80 2068 {"write", moonbr_io_write},
jbe@81 2069 {"write_nb", moonbr_io_write_nb},
jbe@145 2070 {"write_call", moonbr_io_write_call},
jbe@145 2071 {"write_yield", moonbr_io_write_yield},
jbe@80 2072 {"flush", moonbr_io_flush},
jbe@81 2073 {"flush_nb", moonbr_io_flush_nb},
jbe@145 2074 {"flush_call", moonbr_io_flush_call},
jbe@145 2075 {"flush_yield", moonbr_io_flush_yield},
jbe@88 2076 {"finish", moonbr_io_finish},
jbe@87 2077 {"close", moonbr_io_close},
jbe@85 2078 {"reset", moonbr_io_reset},
jbe@246 2079 #ifdef MOONBR_IO_USE_TLS
jbe@246 2080 {"starttls", moonbr_io_starttls},
jbe@246 2081 #endif
jbe@79 2082 {NULL, NULL}
jbe@79 2083 };
jbe@79 2084
jbe@79 2085 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 2086 {"__index", moonbr_io_handleindex},
jbe@79 2087 {"__newindex", moonbr_io_handlenewindex},
jbe@108 2088 {"__gc", moonbr_io_handlegc},
jbe@108 2089 {NULL, NULL}
jbe@108 2090 };
jbe@108 2091
jbe@108 2092 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 2093 {"accept", moonbr_io_accept},
jbe@108 2094 {"accept_nb", moonbr_io_accept_nb},
jbe@108 2095 {"close", moonbr_io_unlisten},
jbe@108 2096 {NULL, NULL}
jbe@108 2097 };
jbe@108 2098
jbe@108 2099 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 2100 {"__gc", moonbr_io_listenergc},
jbe@79 2101 {NULL, NULL}
jbe@79 2102 };
jbe@79 2103
jbe@205 2104 static const struct luaL_Reg moonbr_io_child_methods[] = {
jbe@205 2105 {"kill", moonbr_io_kill},
jbe@205 2106 {"wait", moonbr_io_wait},
jbe@205 2107 {"wait_nb", moonbr_io_wait_nb},
jbe@205 2108 {"wait_call", moonbr_io_wait_call},
jbe@205 2109 {"wait_yield", moonbr_io_wait_yield},
jbe@205 2110 {NULL, NULL}
jbe@205 2111 };
jbe@205 2112
jbe@205 2113 static const struct luaL_Reg moonbr_io_child_metamethods[] = {
jbe@205 2114 {"__index", moonbr_io_childindex},
jbe@205 2115 {"__newindex", moonbr_io_childnewindex},
jbe@205 2116 {"__gc", moonbr_io_childgc},
jbe@205 2117 {NULL, NULL}
jbe@205 2118 };
jbe@205 2119
jbe@79 2120 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 2121 {"localconnect", moonbr_io_localconnect},
jbe@111 2122 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 2123 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 2124 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 2125 {"locallisten", moonbr_io_locallisten},
jbe@108 2126 {"tcplisten", moonbr_io_tcplisten},
jbe@205 2127 {"exec", moonbr_io_exec},
jbe@288 2128 {"catch_sigterm", moonbr_io_catch_sigterm},
jbe@266 2129 {"getpid", moonbr_io_getpid},
jbe@106 2130 {"poll", moonbr_io_poll},
jbe@115 2131 {"timeref", moonbr_io_timeref},
jbe@243 2132 #ifdef MOONBR_IO_USE_TLS
jbe@243 2133 {"tlsconf", moonbr_io_tlsconf},
jbe@243 2134 #endif
jbe@79 2135 {NULL, NULL}
jbe@79 2136 };
jbe@79 2137
jbe@243 2138 #ifdef MOONBR_IO_USE_TLS
jbe@258 2139
jbe@243 2140 static const struct luaL_Reg moonbr_io_tlsconf_metamethods[] = {
jbe@243 2141 {"__gc", moonbr_io_tlsconfgc},
jbe@243 2142 {NULL, NULL}
jbe@243 2143 };
jbe@258 2144
jbe@258 2145 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2146
jbe@79 2147 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 2148
jbe@113 2149 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 2150
jbe@80 2151 lua_newtable(L); // module
jbe@313 2152 lua_pushvalue(L, -1);
jbe@313 2153 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_MODULE_REGKEY);
jbe@80 2154
jbe@79 2155 lua_newtable(L); // public metatable
jbe@79 2156 lua_newtable(L); // handle methods
jbe@79 2157 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 2158 lua_pushvalue(L, -1);
jbe@146 2159 lua_setfield(L, -4, "handle_pt");
jbe@79 2160 lua_setfield(L, -2, "__index");
jbe@79 2161 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 2162
jbe@79 2163 lua_newtable(L); // handle metatable
jbe@79 2164 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 2165 lua_pushvalue(L, -1);
jbe@146 2166 lua_setfield(L, -3, "handle_mt");
jbe@79 2167 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 2168
jbe@108 2169 lua_newtable(L); // listener metatable
jbe@108 2170 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 2171 lua_newtable(L); // listener methods
jbe@108 2172 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 2173 lua_pushvalue(L, -1);
jbe@146 2174 lua_setfield(L, -4, "listener_pt");
jbe@108 2175 lua_setfield(L, -2, "__index");
jbe@146 2176 lua_pushvalue(L, -1);
jbe@146 2177 lua_setfield(L, -3, "listener_mt");
jbe@108 2178 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 2179
jbe@205 2180 lua_newtable(L); // child methods
jbe@205 2181 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205 2182 lua_pushvalue(L, -1);
jbe@205 2183 lua_setfield(L, -3, "child_pt");
jbe@205 2184 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 2185 lua_newtable(L); // child metatable
jbe@205 2186 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205 2187 lua_pushvalue(L, -1);
jbe@205 2188 lua_setfield(L, -3, "child_mt");
jbe@205 2189 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 2190
jbe@243 2191 #ifdef MOONBR_IO_USE_TLS
jbe@243 2192 if(tls_init()) {
jbe@243 2193 return luaL_error(L, "Could not initialize TLS library");
jbe@243 2194 }
jbe@243 2195 lua_newtable(L); // tlsconf metatable
jbe@243 2196 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243 2197 lua_pushvalue(L, -1);
jbe@243 2198 lua_setfield(L, -3, "tlsconf_mt");
jbe@243 2199 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243 2200 #endif
jbe@243 2201
jbe@205 2202 moonbr_io_pushhandle(L, 0);
jbe@205 2203 lua_setfield(L, -2, "stdin");
jbe@205 2204 moonbr_io_pushhandle(L, 1);
jbe@205 2205 lua_setfield(L, -2, "stdout");
jbe@205 2206 moonbr_io_pushhandle(L, 2);
jbe@205 2207 lua_setfield(L, -2, "stderr");
jbe@270 2208
jbe@79 2209 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 2210 return 1;
jbe@79 2211
jbe@79 2212 }
jbe@79 2213

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