moonbridge

annotate moonbridge_io.c @ 277:4f965eda4c2f

Ignore SIGTERM once after sending it to own process group
author jbe
date Tue Jun 06 18:00:30 2017 +0200 (2017-06-06)
parents 8b8be1a66a98
children d4c82c90d244
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@266 58 static int moonbr_io_signalfds[2];
jbe@266 59 #define moonbr_io_signalfd_read moonbr_io_signalfds[0]
jbe@266 60 #define moonbr_io_signalfd_write moonbr_io_signalfds[1]
jbe@266 61
jbe@79 62 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 63 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 64 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205 65 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205 66 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@266 67 #define MOONBR_IO_SIGNALSOCKET_REGKEY "moonbridge_io_signalsocket"
jbe@271 68 #define MOONBR_IO_SIGNALS_REGKEY "moonbridge_io_signals"
jbe@79 69
jbe@243 70 #ifdef MOONBR_IO_USE_TLS
jbe@258 71
jbe@243 72 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252 73
jbe@252 74 typedef struct {
jbe@252 75 struct tls_config *config;
jbe@252 76 int server;
jbe@252 77 } moonbr_io_tlsconf_t;
jbe@258 78
jbe@258 79 #endif /* MOONBR_IO_USE_TLS */
jbe@243 80
jbe@79 81 typedef struct {
jbe@79 82 int fd;
jbe@107 83 int issock;
jbe@107 84 sa_family_t addrfam;
jbe@94 85 int finished;
jbe@94 86 int closed;
jbe@81 87 int nonblocking;
jbe@95 88 int nopush;
jbe@85 89 int readerr;
jbe@105 90 int readbufin;
jbe@105 91 int readbufout;
jbe@81 92 int writeerr;
jbe@83 93 size_t writeleft;
jbe@132 94 size_t flushedleft;
jbe@83 95 #if LUA_VERSION_NUM >= 503
jbe@83 96 lua_Integer writeqin;
jbe@83 97 lua_Integer writeqout;
jbe@83 98 #else
jbe@83 99 int writeqin;
jbe@83 100 int writeqout;
jbe@83 101 #endif
jbe@83 102 size_t writeqoff;
jbe@103 103 int writebufin;
jbe@103 104 int writebufout;
jbe@85 105 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 106 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246 107 #ifdef MOONBR_IO_USE_TLS
jbe@250 108 struct tls *tls;
jbe@250 109 struct tls *servertls;
jbe@250 110 int tlshandshake;
jbe@261 111 int tlsclosing;
jbe@246 112 #endif
jbe@79 113 } moonbr_io_handle_t;
jbe@79 114
jbe@108 115 typedef struct {
jbe@108 116 int fd;
jbe@118 117 sa_family_t addrfam;
jbe@108 118 int nonblocking;
jbe@108 119 } moonbr_io_listener_t;
jbe@108 120
jbe@205 121 typedef struct {
jbe@205 122 pid_t pid;
jbe@205 123 } moonbr_io_child_t;
jbe@205 124
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@140 357 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@143 376 lua_rawseti(L, 5, 2);
jbe@143 377 lua_rawseti(L, 5, 1);
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@152 390 lua_callk(L, 0, 0, ctx, moonbr_io_read_cont);
jbe@140 391 }
jbe@140 392 if (ctx == 1) {
jbe@140 393 lua_pushvalue(L, 5);
jbe@140 394 } else {
jbe@140 395 luaL_Buffer buf;
jbe@140 396 lua_Integer i, chunkcount;
jbe@140 397 chunkcount = lua_rawlen(L, 5);
jbe@140 398 luaL_buffinit(L, &buf);
jbe@140 399 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 400 lua_rawgeti(L, 5, i);
jbe@140 401 luaL_addvalue(&buf);
jbe@140 402 }
jbe@140 403 luaL_pushresult(&buf);
jbe@140 404 }
jbe@143 405 lua_pushvalue(L, -2);
jbe@143 406 return 2;
jbe@140 407 }
jbe@140 408
jbe@140 409 static int moonbr_io_read_call(lua_State *L) {
jbe@140 410 lua_settop(L, 4);
jbe@140 411 lua_pushnil(L);
jbe@140 412 #if LUA_VERSION_NUM >= 503
jbe@140 413 return moonbr_io_read_cont(L, 0, 0);
jbe@140 414 #else
jbe@140 415 return moonbr_io_read_cont(L);
jbe@140 416 #endif
jbe@140 417 }
jbe@140 418
jbe@145 419 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 420
jbe@144 421 #if LUA_VERSION_NUM >= 503
jbe@144 422 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 423 #else
jbe@144 424 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 425 #endif
jbe@144 426 lua_Integer remaining, len;
jbe@144 427 size_t totallen = 0;
jbe@144 428 #if !(LUA_VERSION_NUM >= 503)
jbe@144 429 int ctx = 0;
jbe@144 430 lua_getctx(L, &ctx);
jbe@144 431 #endif
jbe@144 432 remaining = lua_tointeger(L, 3);
jbe@144 433 while (1) {
jbe@144 434 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 435 lua_pushvalue(L, 1);
jbe@144 436 lua_pushvalue(L, 3);
jbe@144 437 lua_pushvalue(L, 4);
jbe@144 438 lua_call(L, 3, 2);
jbe@144 439 if (lua_isnil(L, -2)) return 2;
jbe@144 440 lua_insert(L, -2);
jbe@144 441 len = lua_tointeger(L, -1);
jbe@144 442 lua_pop(L, 1);
jbe@144 443 totallen += len;
jbe@144 444 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 445 lua_pop(L, 1);
jbe@144 446 if (remaining >= 0 && len) {
jbe@144 447 remaining -= len;
jbe@144 448 lua_pushinteger(L, remaining);
jbe@144 449 lua_replace(L, 3);
jbe@144 450 }
jbe@144 451 lua_pushvalue(L, 2);
jbe@152 452 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 453 }
jbe@144 454 lua_pushinteger(L, totallen);
jbe@144 455 lua_pushvalue(L, -2);
jbe@144 456 return 2;
jbe@144 457 }
jbe@144 458
jbe@144 459 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 460 #if LUA_VERSION_NUM >= 503
jbe@144 461 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 462 #else
jbe@144 463 return moonbr_io_drain_cont(L);
jbe@144 464 #endif
jbe@144 465 }
jbe@144 466
jbe@145 467 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 468
jbe@250 469 #ifdef MOONBR_IO_USE_TLS
jbe@258 470
jbe@250 471 #define moonbr_io_write_tls(buf, buflen) \
jbe@250 472 if (handle->tls) { \
jbe@250 473 do { \
jbe@250 474 if (!handle->tlshandshake) { \
jbe@250 475 do written = tls_handshake(handle->tls); \
jbe@250 476 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 477 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 478 handle->tlshandshake = written; \
jbe@250 479 errno = EAGAIN; \
jbe@250 480 break; \
jbe@250 481 } \
jbe@250 482 if (written < 0) { \
jbe@250 483 lua_pushnil(L); \
jbe@250 484 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 485 return 2; \
jbe@250 486 } \
jbe@250 487 handle->tlshandshake = 1; \
jbe@250 488 } \
jbe@250 489 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250 490 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 491 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 492 errno = EAGAIN; \
jbe@250 493 break; \
jbe@250 494 } \
jbe@250 495 if (written < 0) { \
jbe@250 496 lua_pushnil(L); \
jbe@250 497 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 498 return 2; \
jbe@250 499 } \
jbe@250 500 } while (0); \
jbe@250 501 } \
jbe@250 502 else
jbe@258 503
jbe@258 504 #endif /* MOONBR_IO_USE_TLS */
jbe@250 505
jbe@81 506 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 507 moonbr_io_handle_t *handle;
jbe@80 508 int i, top;
jbe@80 509 const char *str;
jbe@92 510 size_t strlen;
jbe@103 511 ssize_t written;
jbe@80 512 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 513 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 514 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 515 if (handle->writeerr) {
jbe@80 516 lua_pushnil(L);
jbe@80 517 lua_pushliteral(L, "Previous write error");
jbe@80 518 return 2;
jbe@80 519 }
jbe@103 520 handle->writeerr = 1;
jbe@257 521 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84 522 top = lua_gettop(L);
jbe@81 523 lua_getuservalue(L, 1);
jbe@103 524 lua_getfield(L, -1, "writequeue");
jbe@84 525 for (i=2; i<=top; i++) {
jbe@84 526 luaL_checklstring(L, i, &strlen);
jbe@84 527 lua_pushvalue(L, i);
jbe@84 528 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 529 handle->writeleft += strlen;
jbe@81 530 }
jbe@132 531 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 532 while (handle->writeqout != handle->writeqin) {
jbe@83 533 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 534 str = lua_tolstring(L, -1, &strlen);
jbe@92 535 while (handle->writeqoff < strlen) {
jbe@103 536 if (
jbe@132 537 strlen - handle->writeqoff <
jbe@103 538 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 539 ) {
jbe@103 540 memcpy(
jbe@103 541 handle->writebuf + handle->writebufin,
jbe@103 542 str + handle->writeqoff,
jbe@103 543 strlen - handle->writeqoff
jbe@103 544 );
jbe@103 545 handle->writebufin += strlen - handle->writeqoff;
jbe@80 546 break;
jbe@80 547 } else {
jbe@103 548 memcpy(
jbe@103 549 handle->writebuf + handle->writebufin,
jbe@103 550 str + handle->writeqoff,
jbe@103 551 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 552 );
jbe@103 553 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228 554 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103 555 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257 556 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 557 #ifdef MOONBR_IO_USE_TLS
jbe@250 558 moonbr_io_write_tls(
jbe@250 559 handle->writebuf + handle->writebufout,
jbe@250 560 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250 561 )
jbe@249 562 #endif
jbe@103 563 written = write(
jbe@103 564 handle->fd,
jbe@103 565 handle->writebuf + handle->writebufout,
jbe@103 566 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 567 );
jbe@103 568 if (written < 0) {
jbe@81 569 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 570 goto moonbr_io_write_impl_block;
jbe@257 571 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103 572 } else {
jbe@103 573 handle->writebufout += written;
jbe@103 574 handle->writeleft -= written;
jbe@133 575 if (handle->flushedleft) {
jbe@133 576 if (written >= handle->flushedleft) {
jbe@133 577 handle->flushedleft = 0;
jbe@257 578 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 579 } else {
jbe@133 580 handle->flushedleft -= written;
jbe@133 581 }
jbe@133 582 }
jbe@80 583 }
jbe@80 584 }
jbe@103 585 handle->writebufin = 0;
jbe@103 586 handle->writebufout = 0;
jbe@80 587 }
jbe@80 588 }
jbe@81 589 handle->writeqoff = 0;
jbe@81 590 lua_pop(L, 1);
jbe@81 591 lua_pushnil(L);
jbe@83 592 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 593 }
jbe@132 594 while (handle->flushedleft) {
jbe@257 595 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 596 #ifdef MOONBR_IO_USE_TLS
jbe@250 597 moonbr_io_write_tls(
jbe@250 598 handle->writebuf + handle->writebufout,
jbe@250 599 handle->writebufin - handle->writebufout
jbe@250 600 )
jbe@249 601 #endif
jbe@132 602 written = write(
jbe@132 603 handle->fd,
jbe@132 604 handle->writebuf + handle->writebufout,
jbe@132 605 handle->writebufin - handle->writebufout
jbe@132 606 );
jbe@132 607 if (written < 0) {
jbe@132 608 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 609 goto moonbr_io_write_impl_block;
jbe@257 610 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132 611 } else {
jbe@132 612 handle->writebufout += written;
jbe@132 613 handle->writeleft -= written;
jbe@133 614 if (handle->flushedleft) {
jbe@133 615 if (written >= handle->flushedleft) {
jbe@133 616 handle->flushedleft = 0;
jbe@257 617 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 618 } else {
jbe@133 619 handle->flushedleft -= written;
jbe@133 620 }
jbe@133 621 }
jbe@81 622 }
jbe@132 623 }
jbe@132 624 if (handle->writebufout == handle->writebufin) {
jbe@103 625 handle->writebufin = 0;
jbe@103 626 handle->writebufout = 0;
jbe@81 627 }
jbe@103 628 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 629 else lua_pushvalue(L, 1);
jbe@103 630 handle->writeerr = 0;
jbe@80 631 return 1;
jbe@81 632 moonbr_io_write_impl_block:
jbe@91 633 lua_pushinteger(L, handle->writeleft);
jbe@103 634 handle->writeerr = 0;
jbe@81 635 return 1;
jbe@81 636 }
jbe@81 637
jbe@81 638 static int moonbr_io_write(lua_State *L) {
jbe@81 639 return moonbr_io_write_impl(L, 0, 0);
jbe@81 640 }
jbe@81 641
jbe@81 642 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 643 return moonbr_io_write_impl(L, 1, 0);
jbe@80 644 }
jbe@80 645
jbe@80 646 static int moonbr_io_flush(lua_State *L) {
jbe@81 647 return moonbr_io_write_impl(L, 0, 1);
jbe@81 648 }
jbe@81 649
jbe@81 650 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 651 return moonbr_io_write_impl(L, 1, 1);
jbe@80 652 }
jbe@80 653
jbe@145 654 #if LUA_VERSION_NUM >= 503
jbe@145 655 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 656 #else
jbe@145 657 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 658 #endif
jbe@145 659 while (1) {
jbe@145 660 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 661 lua_pushvalue(L, 1);
jbe@145 662 lua_call(L, 1, 2);
jbe@145 663 if (lua_isnil(L, -2)) return 2;
jbe@145 664 if (!lua_tointeger(L, -2)) {
jbe@145 665 lua_pushvalue(L, 1);
jbe@145 666 return 1;
jbe@145 667 }
jbe@145 668 lua_pop(L, 2);
jbe@145 669 lua_pushvalue(L, 2);
jbe@152 670 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 671 }
jbe@145 672 }
jbe@145 673
jbe@145 674 static int moonbr_io_write_call(lua_State *L) {
jbe@145 675 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 676 lua_insert(L, 3);
jbe@145 677 lua_pushvalue(L, 1);
jbe@145 678 lua_insert(L, 4);
jbe@145 679 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 680 if (lua_isnil(L, -2)) return 2;
jbe@145 681 if (!lua_tointeger(L, -2)) {
jbe@145 682 lua_pushvalue(L, 1);
jbe@145 683 return 1;
jbe@145 684 }
jbe@145 685 #if LUA_VERSION_NUM >= 503
jbe@145 686 return moonbr_io_write_cont(L, 0, 0);
jbe@145 687 #else
jbe@145 688 return moonbr_io_write_cont(L);
jbe@145 689 #endif
jbe@145 690 }
jbe@145 691
jbe@145 692 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 693
jbe@145 694 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 695 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 696 lua_insert(L, 3);
jbe@145 697 lua_pushvalue(L, 1);
jbe@145 698 lua_insert(L, 4);
jbe@145 699 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 700 if (lua_isnil(L, -2)) return 2;
jbe@145 701 if (!lua_tointeger(L, -2)) {
jbe@145 702 lua_pushvalue(L, 1);
jbe@145 703 return 1;
jbe@145 704 }
jbe@145 705 #if LUA_VERSION_NUM >= 503
jbe@145 706 return moonbr_io_write_cont(L, 0, 0);
jbe@145 707 #else
jbe@145 708 return moonbr_io_write_cont(L);
jbe@145 709 #endif
jbe@145 710 }
jbe@145 711
jbe@145 712 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 713
jbe@88 714 static int moonbr_io_finish(lua_State *L) {
jbe@88 715 moonbr_io_handle_t *handle;
jbe@88 716 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 717 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 718 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 719 if (handle->writeleft) {
jbe@94 720 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 721 lua_pushvalue(L, 1);
jbe@116 722 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 723 handle->finished = 1;
jbe@116 724 lua_error(L);
jbe@116 725 }
jbe@94 726 if (!lua_toboolean(L, -2)) {
jbe@94 727 handle->finished = 1;
jbe@94 728 return 2;
jbe@88 729 }
jbe@94 730 }
jbe@94 731 handle->finished = 1;
jbe@260 732 #ifdef MOONBR_IO_USE_TLS
jbe@260 733 if ((handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) && !handle->tls) {
jbe@260 734 #else
jbe@107 735 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@260 736 #endif
jbe@257 737 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94 738 } else {
jbe@251 739 #ifdef MOONBR_IO_USE_TLS
jbe@260 740 if (handle->tls) {
jbe@260 741 int status;
jbe@260 742 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260 743 do status = tls_close(handle->tls);
jbe@260 744 while (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT);
jbe@260 745 if (status) {
jbe@260 746 close(handle->fd);
jbe@260 747 handle->fd = -1;
jbe@260 748 lua_pushnil(L);
jbe@260 749 lua_pushstring(L, tls_error(handle->tls));
jbe@260 750 return 2;
jbe@260 751 }
jbe@260 752 }
jbe@251 753 #endif
jbe@94 754 if (close(handle->fd)) {
jbe@94 755 handle->fd = -1;
jbe@257 756 moonbr_io_return_errmsg();
jbe@94 757 }
jbe@94 758 handle->fd = -1; /* fake EOF on read */
jbe@88 759 }
jbe@88 760 lua_pushboolean(L, 1);
jbe@88 761 return 1;
jbe@88 762 }
jbe@88 763
jbe@261 764 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83 765 moonbr_io_handle_t *handle;
jbe@83 766 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 767 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259 768 if (!reset && handle->fd >= 0) {
jbe@87 769 if (handle->writeleft) {
jbe@261 770 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87 771 lua_pushvalue(L, 1);
jbe@116 772 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 773 handle->closed = 1;
jbe@116 774 close(handle->fd);
jbe@116 775 handle->fd = -1;
jbe@116 776 lua_error(L);
jbe@116 777 }
jbe@261 778 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87 779 if (!lua_toboolean(L, -2)) {
jbe@87 780 close(handle->fd);
jbe@87 781 handle->fd = -1;
jbe@87 782 return 2;
jbe@87 783 }
jbe@261 784 #if LUA_VERSION_NUM >= 503
jbe@261 785 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261 786 #else
jbe@261 787 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261 788 #endif
jbe@261 789 lua_pushliteral(L, "flush");
jbe@261 790 lua_pushvalue(L, -3);
jbe@261 791 return 2;
jbe@261 792 }
jbe@129 793 } else {
jbe@129 794 handle->closed = 1;
jbe@83 795 }
jbe@260 796 #ifdef MOONBR_IO_USE_TLS
jbe@260 797 if (handle->tls) {
jbe@260 798 int status;
jbe@261 799 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260 800 do status = tls_close(handle->tls);
jbe@261 801 while (!nonblocking && (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT));
jbe@261 802 if (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT) {
jbe@261 803 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261 804 lua_pushliteral(L, "close");
jbe@261 805 return 1;
jbe@261 806 }
jbe@260 807 if (status) {
jbe@260 808 close(handle->fd);
jbe@260 809 handle->fd = -1;
jbe@260 810 lua_pushnil(L);
jbe@260 811 lua_pushstring(L, tls_error(handle->tls));
jbe@260 812 return 2;
jbe@260 813 }
jbe@260 814 }
jbe@260 815 #endif
jbe@256 816 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257 817 moonbr_io_prepare_errmsg();
jbe@256 818 close(handle->fd);
jbe@256 819 handle->fd = -1;
jbe@257 820 moonbr_io_return_prepared_errmsg();
jbe@256 821 }
jbe@129 822 } else {
jbe@129 823 handle->closed = 1;
jbe@83 824 }
jbe@94 825 if (handle->fd >= 0) {
jbe@94 826 if (close(handle->fd)) {
jbe@94 827 handle->fd = -1;
jbe@257 828 moonbr_io_return_errmsg();
jbe@94 829 }
jbe@104 830 handle->fd = -1;
jbe@83 831 }
jbe@83 832 lua_pushboolean(L, 1);
jbe@83 833 return 1;
jbe@84 834
jbe@83 835 }
jbe@83 836
jbe@94 837 static int moonbr_io_close(lua_State *L) {
jbe@261 838 return moonbr_io_close_impl(L, 0, 0);
jbe@94 839 }
jbe@94 840
jbe@84 841 static int moonbr_io_reset(lua_State *L) {
jbe@261 842 return moonbr_io_close_impl(L, 0, 1);
jbe@84 843 }
jbe@84 844
jbe@108 845 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 846 moonbr_io_handle_t *handle;
jbe@88 847 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 848 if (handle->fd >= 0) {
jbe@218 849 lua_pushcfunction(L, moonbr_io_reset);
jbe@88 850 lua_pushvalue(L, 1);
jbe@88 851 lua_pushinteger(L, 0);
jbe@88 852 lua_call(L, 2, 0);
jbe@88 853 }
jbe@246 854 #ifdef MOONBR_IO_USE_TLS
jbe@246 855 if (handle->tls) {
jbe@246 856 tls_free(handle->tls);
jbe@246 857 handle->tls = NULL;
jbe@246 858 }
jbe@246 859 if (handle->servertls) {
jbe@246 860 tls_free(handle->servertls);
jbe@246 861 handle->servertls = NULL;
jbe@246 862 }
jbe@246 863 #endif
jbe@88 864 return 0;
jbe@88 865 }
jbe@88 866
jbe@100 867 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 868 moonbr_io_handle_t *handle;
jbe@88 869 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 870 if (!handle->closed) {
jbe@100 871 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 872 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 873 lua_call(L, 1, 0);
jbe@88 874 }
jbe@88 875 }
jbe@88 876
jbe@208 877 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208 878 int *fd;
jbe@79 879 moonbr_io_handle_t *handle;
jbe@107 880 struct sockaddr addr;
jbe@107 881 socklen_t addrlen;
jbe@208 882 fd = lua_touserdata(L, 1);
jbe@79 883 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208 884 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107 885 addrlen = sizeof(addr);
jbe@208 886 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107 887 if (errno != ENOTSOCK) {
jbe@257 888 moonbr_io_prepare_errmsg();
jbe@107 889 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 890 }
jbe@107 891 handle->issock = 0;
jbe@107 892 } else {
jbe@107 893 handle->issock = 1;
jbe@107 894 handle->addrfam = addr.sa_family;
jbe@107 895 }
jbe@94 896 handle->finished = 0;
jbe@94 897 handle->closed = 0;
jbe@81 898 handle->nonblocking = -1;
jbe@95 899 handle->nopush = -1;
jbe@85 900 handle->readerr = 0;
jbe@105 901 handle->readbufin = 0;
jbe@105 902 handle->readbufout = 0;
jbe@81 903 handle->writeerr = 0;
jbe@81 904 handle->writeleft = 0;
jbe@132 905 handle->flushedleft = 0;
jbe@83 906 handle->writeqin = 0;
jbe@83 907 handle->writeqout = 0;
jbe@81 908 handle->writeqoff = 0;
jbe@103 909 handle->writebufin = 0;
jbe@103 910 handle->writebufout = 0;
jbe@246 911 #ifdef MOONBR_IO_USE_TLS
jbe@246 912 handle->tls = NULL;
jbe@246 913 handle->servertls = NULL;
jbe@250 914 handle->tlshandshake = 0;
jbe@261 915 handle->tlsclosing = 0;
jbe@246 916 #endif
jbe@208 917 handle->fd = *fd; /* required for set_linger call */
jbe@256 918 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257 919 moonbr_io_prepare_errmsg();
jbe@256 920 handle->fd = -1;
jbe@256 921 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256 922 }
jbe@208 923 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238 924 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 925 lua_newtable(L); // uservalue
jbe@81 926 lua_newtable(L);
jbe@103 927 lua_setfield(L, -2, "writequeue");
jbe@79 928 lua_newtable(L); // public
jbe@107 929 if (handle->addrfam == AF_INET6) {
jbe@107 930 struct sockaddr_in6 addr_in6;
jbe@107 931 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 932 const char *addrstr;
jbe@107 933 addrlen = sizeof(addr_in6);
jbe@208 934 if (getsockname(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 935 moonbr_io_prepare_errmsg();
jbe@107 936 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 937 }
jbe@107 938 if (addrlen > sizeof(addr_in6)) {
jbe@107 939 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 940 }
jbe@107 941 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 942 if (!addrstr) {
jbe@257 943 moonbr_io_prepare_errmsg();
jbe@107 944 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 945 } else {
jbe@107 946 lua_pushstring(L, addrstr);
jbe@107 947 lua_setfield(L, -2, "local_ip6");
jbe@107 948 }
jbe@107 949 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 950 lua_setfield(L, -2, "local_tcpport");
jbe@208 951 if (getpeername(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 952 moonbr_io_prepare_errmsg();
jbe@107 953 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 954 }
jbe@107 955 if (addrlen > sizeof(addr_in6)) {
jbe@107 956 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 957 }
jbe@107 958 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 959 if (!addrstr) {
jbe@257 960 moonbr_io_prepare_errmsg();
jbe@107 961 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 962 } else {
jbe@107 963 lua_pushstring(L, addrstr);
jbe@107 964 lua_setfield(L, -2, "remote_ip6");
jbe@107 965 }
jbe@107 966 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 967 lua_setfield(L, -2, "remote_tcpport");
jbe@107 968 } else if (handle->addrfam == AF_INET) {
jbe@107 969 struct sockaddr_in addr_in;
jbe@107 970 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 971 const char *addrstr;
jbe@107 972 addrlen = sizeof(addr_in);
jbe@208 973 if (getsockname(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 974 moonbr_io_prepare_errmsg();
jbe@107 975 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 976 }
jbe@107 977 if (addrlen > sizeof(addr_in)) {
jbe@107 978 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 979 }
jbe@107 980 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 981 if (!addrstr) {
jbe@257 982 moonbr_io_prepare_errmsg();
jbe@107 983 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 984 } else {
jbe@107 985 lua_pushstring(L, addrstr);
jbe@107 986 lua_setfield(L, -2, "local_ip4");
jbe@107 987 }
jbe@107 988 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 989 lua_setfield(L, -2, "local_tcpport");
jbe@208 990 if (getpeername(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 991 moonbr_io_prepare_errmsg();
jbe@107 992 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 993 }
jbe@107 994 if (addrlen > sizeof(addr_in)) {
jbe@107 995 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 996 }
jbe@107 997 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 998 if (!addrstr) {
jbe@257 999 moonbr_io_prepare_errmsg();
jbe@107 1000 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 1001 } else {
jbe@107 1002 lua_pushstring(L, addrstr);
jbe@107 1003 lua_setfield(L, -2, "remote_ip4");
jbe@107 1004 }
jbe@107 1005 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 1006 lua_setfield(L, -2, "remote_tcpport");
jbe@107 1007 }
jbe@238 1008 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1009 lua_setfield(L, -2, "public");
jbe@79 1010 lua_setuservalue(L, -2);
jbe@208 1011 handle->fd = *fd;
jbe@208 1012 *fd = -1; /* closing is now handled by garbage collection */
jbe@208 1013 return 1;
jbe@208 1014 }
jbe@208 1015
jbe@208 1016 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208 1017 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1018 lua_pushlightuserdata(L, &fd);
jbe@208 1019 if (lua_pcall(L, 1, 1, 0)) {
jbe@251 1020 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208 1021 lua_error(L);
jbe@208 1022 }
jbe@79 1023 }
jbe@79 1024
jbe@79 1025 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 1026 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1027 luaL_checkany(L, 2);
jbe@79 1028 lua_getuservalue(L, 1);
jbe@79 1029 lua_getfield(L, -1, "public");
jbe@79 1030 lua_pushvalue(L, 2);
jbe@79 1031 lua_gettable(L, -2);
jbe@79 1032 return 1;
jbe@79 1033 }
jbe@79 1034
jbe@79 1035 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 1036 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1037 luaL_checkany(L, 2);
jbe@205 1038 luaL_checkany(L, 3);
jbe@79 1039 lua_getuservalue(L, 1);
jbe@79 1040 lua_getfield(L, -1, "public");
jbe@79 1041 lua_pushvalue(L, 2);
jbe@79 1042 lua_pushvalue(L, 3);
jbe@79 1043 lua_settable(L, -3);
jbe@79 1044 return 0;
jbe@79 1045 }
jbe@79 1046
jbe@111 1047 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 1048 const char *path;
jbe@111 1049 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 1050 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 1051 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 1052 ) - 1; /* one byte for termination */
jbe@111 1053 int sock;
jbe@111 1054 path = luaL_checkstring(L, 1);
jbe@111 1055 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 1056 strcpy(sockaddr.sun_path, path);
jbe@111 1057 sock = socket(
jbe@111 1058 PF_LOCAL,
jbe@111 1059 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 1060 0
jbe@111 1061 );
jbe@257 1062 if (sock < 0) moonbr_io_return_errmsg();
jbe@111 1063 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 1064 if (!nonblocking && errno == EINTR) {
jbe@257 1065 moonbr_io_prepare_errmsg();
jbe@111 1066 close(sock);
jbe@257 1067 moonbr_io_return_prepared_errmsg();
jbe@257 1068 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@111 1069 }
jbe@111 1070 moonbr_io_pushhandle(L, sock);
jbe@111 1071 return 1;
jbe@111 1072 }
jbe@111 1073
jbe@111 1074 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 1075 return moonbr_io_localconnect_impl(L, 0);
jbe@111 1076 }
jbe@111 1077
jbe@111 1078 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 1079 return moonbr_io_localconnect_impl(L, 1);
jbe@111 1080 }
jbe@111 1081
jbe@99 1082 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 1083 const char *host, *port;
jbe@98 1084 struct addrinfo hints = { 0, };
jbe@98 1085 struct addrinfo *res, *addrinfo;
jbe@98 1086 int errcode;
jbe@98 1087 int sock;
jbe@98 1088 host = luaL_checkstring(L, 1);
jbe@98 1089 port = luaL_checkstring(L, 2);
jbe@98 1090 hints.ai_family = AF_UNSPEC;
jbe@98 1091 hints.ai_socktype = SOCK_STREAM;
jbe@98 1092 hints.ai_protocol = IPPROTO_TCP;
jbe@98 1093 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 1094 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 1095 if (errcode) {
jbe@102 1096 freeaddrinfo(res);
jbe@98 1097 if (errcode == EAI_SYSTEM) {
jbe@257 1098 moonbr_io_prepare_errmsg();
jbe@98 1099 lua_pushnil(L);
jbe@98 1100 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 1101 } else {
jbe@98 1102 lua_pushnil(L);
jbe@98 1103 lua_pushstring(L, gai_strerror(errcode));
jbe@98 1104 }
jbe@98 1105 return 2;
jbe@98 1106 }
jbe@98 1107 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1108 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 1109 }
jbe@98 1110 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1111 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 1112 }
jbe@98 1113 addrinfo = res;
jbe@98 1114 moonbr_io_tcpconnect_found:
jbe@99 1115 sock = socket(
jbe@134 1116 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 1117 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 1118 addrinfo->ai_protocol
jbe@99 1119 );
jbe@98 1120 if (sock < 0) {
jbe@257 1121 moonbr_io_prepare_errmsg();
jbe@108 1122 freeaddrinfo(res);
jbe@257 1123 moonbr_io_return_prepared_errmsg();
jbe@98 1124 }
jbe@98 1125 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1126 freeaddrinfo(res);
jbe@99 1127 if (!nonblocking && errno == EINTR) {
jbe@257 1128 moonbr_io_prepare_errmsg();
jbe@99 1129 close(sock);
jbe@257 1130 moonbr_io_return_prepared_errmsg();
jbe@257 1131 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@108 1132 } else {
jbe@108 1133 freeaddrinfo(res);
jbe@98 1134 }
jbe@107 1135 moonbr_io_pushhandle(L, sock);
jbe@98 1136 return 1;
jbe@98 1137 }
jbe@98 1138
jbe@99 1139 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1140 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1141 }
jbe@99 1142
jbe@99 1143 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1144 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1145 }
jbe@99 1146
jbe@112 1147 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1148 moonbr_io_listener_t *listener;
jbe@112 1149 const char *path;
jbe@118 1150 struct stat sb;
jbe@112 1151 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1152 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1153 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1154 ) - 1; /* one byte for termination */
jbe@112 1155 int sock;
jbe@112 1156 path = luaL_checkstring(L, 1);
jbe@112 1157 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1158 strcpy(sockaddr.sun_path, path);
jbe@118 1159 if (stat(path, &sb) == 0) {
jbe@118 1160 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1161 }
jbe@112 1162 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1163 listener->fd = -1;
jbe@112 1164 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1165 sock = socket(
jbe@112 1166 PF_LOCAL,
jbe@112 1167 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1168 0
jbe@112 1169 );
jbe@257 1170 if (sock < 0) moonbr_io_return_errmsg();
jbe@112 1171 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257 1172 moonbr_io_prepare_errmsg();
jbe@112 1173 close(sock);
jbe@257 1174 moonbr_io_return_prepared_errmsg();
jbe@112 1175 }
jbe@112 1176 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1177 moonbr_io_prepare_errmsg();
jbe@112 1178 close(sock);
jbe@257 1179 moonbr_io_return_prepared_errmsg();
jbe@112 1180 }
jbe@112 1181 listener->fd = sock;
jbe@118 1182 listener->addrfam = AF_LOCAL;
jbe@112 1183 listener->nonblocking = -1;
jbe@112 1184 return 1;
jbe@112 1185 }
jbe@112 1186
jbe@108 1187 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1188 moonbr_io_listener_t *listener;
jbe@108 1189 const char *host, *port;
jbe@108 1190 struct addrinfo hints = { 0, };
jbe@108 1191 struct addrinfo *res, *addrinfo;
jbe@108 1192 int errcode;
jbe@108 1193 int sock;
jbe@108 1194 host = luaL_optstring(L, 1, NULL);
jbe@108 1195 port = luaL_checkstring(L, 2);
jbe@108 1196 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1197 listener->fd = -1;
jbe@108 1198 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1199 hints.ai_family = AF_UNSPEC;
jbe@108 1200 hints.ai_socktype = SOCK_STREAM;
jbe@108 1201 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1202 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1203 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1204 if (errcode) {
jbe@108 1205 freeaddrinfo(res);
jbe@108 1206 if (errcode == EAI_SYSTEM) {
jbe@257 1207 moonbr_io_prepare_errmsg();
jbe@108 1208 lua_pushnil(L);
jbe@108 1209 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1210 } else {
jbe@108 1211 lua_pushnil(L);
jbe@108 1212 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1213 }
jbe@108 1214 return 2;
jbe@108 1215 }
jbe@108 1216 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1217 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1218 }
jbe@108 1219 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1220 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1221 }
jbe@108 1222 addrinfo = res;
jbe@108 1223 moonbr_io_tcpconnect_found:
jbe@118 1224 listener->addrfam = addrinfo->ai_family;
jbe@108 1225 sock = socket(
jbe@134 1226 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1227 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1228 addrinfo->ai_protocol
jbe@108 1229 );
jbe@108 1230 if (sock < 0) {
jbe@257 1231 moonbr_io_prepare_errmsg();
jbe@108 1232 freeaddrinfo(res);
jbe@257 1233 moonbr_io_return_prepared_errmsg();
jbe@108 1234 }
jbe@120 1235 {
jbe@120 1236 static const int reuseval = 1;
jbe@120 1237 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257 1238 moonbr_io_prepare_errmsg();
jbe@120 1239 freeaddrinfo(res);
jbe@120 1240 close(sock);
jbe@120 1241 lua_pushnil(L);
jbe@120 1242 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1243 return 2;
jbe@120 1244 }
jbe@120 1245 }
jbe@108 1246 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257 1247 moonbr_io_prepare_errmsg();
jbe@108 1248 freeaddrinfo(res);
jbe@108 1249 close(sock);
jbe@257 1250 moonbr_io_return_prepared_errmsg();
jbe@108 1251 }
jbe@108 1252 freeaddrinfo(res);
jbe@108 1253 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1254 moonbr_io_prepare_errmsg();
jbe@108 1255 close(sock);
jbe@257 1256 moonbr_io_return_prepared_errmsg();
jbe@108 1257 }
jbe@108 1258 listener->fd = sock;
jbe@108 1259 listener->nonblocking = -1;
jbe@108 1260 return 1;
jbe@108 1261 }
jbe@108 1262
jbe@108 1263 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1264 moonbr_io_listener_t *listener;
jbe@108 1265 int fd;
jbe@108 1266 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1267 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1268 if (listener->nonblocking != nonblocking) {
jbe@108 1269 int flags;
jbe@108 1270 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1271 if (flags == -1) {
jbe@257 1272 moonbr_io_prepare_errmsg();
jbe@108 1273 close(listener->fd);
jbe@108 1274 listener->fd = -1;
jbe@108 1275 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1276 }
jbe@108 1277 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1278 else flags &= ~O_NONBLOCK;
jbe@108 1279 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257 1280 moonbr_io_prepare_errmsg();
jbe@108 1281 close(listener->fd);
jbe@108 1282 listener->fd = -1;
jbe@108 1283 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1284 }
jbe@108 1285 listener->nonblocking = nonblocking;
jbe@108 1286 }
jbe@108 1287 while (1) {
jbe@214 1288 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215 1289 fd = accept(listener->fd, NULL, NULL);
jbe@214 1290 if (fd != -1) {
jbe@214 1291 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257 1292 moonbr_io_prepare_errmsg();
jbe@214 1293 close(listener->fd);
jbe@214 1294 listener->fd = -1;
jbe@214 1295 close(fd);
jbe@214 1296 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214 1297 }
jbe@214 1298 }
jbe@214 1299 #else
jbe@108 1300 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214 1301 #endif
jbe@108 1302 if (fd < 0) {
jbe@108 1303 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1304 lua_pushboolean(L, 0);
jbe@108 1305 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1306 return 2;
jbe@257 1307 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108 1308 } else {
jbe@108 1309 moonbr_io_pushhandle(L, fd);
jbe@108 1310 return 1;
jbe@108 1311 }
jbe@108 1312 }
jbe@108 1313 }
jbe@108 1314
jbe@108 1315 static int moonbr_io_accept(lua_State *L) {
jbe@108 1316 return moonbr_io_accept_impl(L, 0);
jbe@108 1317 }
jbe@108 1318
jbe@108 1319 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1320 return moonbr_io_accept_impl(L, 1);
jbe@108 1321 }
jbe@108 1322
jbe@108 1323 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1324 moonbr_io_listener_t *listener;
jbe@118 1325 struct sockaddr_un addr;
jbe@118 1326 socklen_t addrlen;
jbe@118 1327 struct stat sb;
jbe@108 1328 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1329 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1330 addrlen = sizeof(addr);
jbe@118 1331 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1332 if (close(listener->fd)) {
jbe@257 1333 moonbr_io_prepare_errmsg();
jbe@108 1334 listener->fd = -1;
jbe@118 1335 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1336 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1337 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1338 }
jbe@118 1339 }
jbe@257 1340 moonbr_io_return_prepared_errmsg();
jbe@108 1341 }
jbe@108 1342 listener->fd = -1;
jbe@118 1343 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1344 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1345 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1346 }
jbe@118 1347 }
jbe@108 1348 lua_pushboolean(L, 1);
jbe@108 1349 return 1;
jbe@108 1350 }
jbe@108 1351
jbe@108 1352 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1353 moonbr_io_listener_t *listener;
jbe@108 1354 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1355 if (listener->fd >= 0) close(listener->fd);
jbe@108 1356 listener->fd = -1;
jbe@108 1357 return 0;
jbe@108 1358 }
jbe@108 1359
jbe@205 1360 static int moonbr_io_exec(lua_State *L) {
jbe@205 1361 char **argv;
jbe@205 1362 int i, argc;
jbe@205 1363 int sockin[2], sockout[2], sockerr[2];
jbe@205 1364 volatile int errorcond = 0;
jbe@213 1365 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205 1366 moonbr_io_child_t *child;
jbe@205 1367 argc = lua_gettop(L);
jbe@205 1368 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205 1369 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205 1370 argv[argc] = NULL;
jbe@208 1371 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208 1372 child->pid = 0;
jbe@208 1373 lua_newtable(L);
jbe@208 1374 lua_setuservalue(L, -2);
jbe@238 1375 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206 1376 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockin)) {
jbe@257 1377 moonbr_io_prepare_errmsg();
jbe@205 1378 lua_pushnil(L);
jbe@205 1379 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1380 return 2;
jbe@205 1381 }
jbe@206 1382 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockout)) {
jbe@257 1383 moonbr_io_prepare_errmsg();
jbe@205 1384 close(sockin[0]);
jbe@205 1385 close(sockin[1]);
jbe@205 1386 lua_pushnil(L);
jbe@205 1387 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1388 return 2;
jbe@205 1389 }
jbe@206 1390 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockerr)) {
jbe@257 1391 moonbr_io_prepare_errmsg();
jbe@205 1392 close(sockin[0]);
jbe@205 1393 close(sockin[1]);
jbe@205 1394 close(sockout[0]);
jbe@205 1395 close(sockout[1]);
jbe@205 1396 lua_pushnil(L);
jbe@205 1397 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1398 return 2;
jbe@205 1399 }
jbe@205 1400 child->pid = vfork();
jbe@205 1401 if (child->pid == -1) {
jbe@257 1402 moonbr_io_prepare_errmsg();
jbe@205 1403 close(sockin[0]);
jbe@205 1404 close(sockin[1]);
jbe@205 1405 close(sockout[0]);
jbe@205 1406 close(sockout[1]);
jbe@205 1407 close(sockerr[0]);
jbe@205 1408 close(sockerr[1]);
jbe@205 1409 lua_pushnil(L);
jbe@205 1410 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205 1411 return 2;
jbe@205 1412 }
jbe@205 1413 if (!child->pid) {
jbe@208 1414 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1415 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208 1416 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232 1417 closefrom(3);
jbe@208 1418 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1419 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1420 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205 1421 if (execvp(argv[0], argv)) {
jbe@205 1422 errorcond = 2;
jbe@205 1423 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205 1424 _exit(0);
jbe@205 1425 }
jbe@208 1426 moonbr_io_exec_error1:
jbe@206 1427 errorcond = 1;
jbe@206 1428 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206 1429 _exit(0);
jbe@205 1430 }
jbe@205 1431 close(sockin[1]);
jbe@205 1432 close(sockout[1]);
jbe@205 1433 close(sockerr[1]);
jbe@205 1434 if (errorcond) {
jbe@205 1435 int status;
jbe@205 1436 close(sockin[0]);
jbe@205 1437 close(sockout[0]);
jbe@205 1438 close(sockerr[0]);
jbe@205 1439 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1440 if (errno != EINTR) {
jbe@257 1441 moonbr_io_prepare_errmsg();
jbe@205 1442 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205 1443 }
jbe@205 1444 }
jbe@208 1445 child->pid = 0;
jbe@205 1446 lua_pushnil(L);
jbe@205 1447 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205 1448 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205 1449 return 2;
jbe@205 1450 }
jbe@208 1451 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1452 lua_pushlightuserdata(L, &sockin[0]);
jbe@208 1453 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1454 if (sockin[0] != -1) close(sockin[0]);
jbe@208 1455 close(sockout[0]);
jbe@208 1456 close(sockerr[0]);
jbe@208 1457 goto moonbr_io_exec_error2;
jbe@208 1458 }
jbe@205 1459 lua_setfield(L, -2, "stdin");
jbe@208 1460 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1461 lua_pushlightuserdata(L, &sockout[0]);
jbe@208 1462 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1463 if (sockout[0] != -1) close(sockout[0]);
jbe@208 1464 close(sockerr[0]);
jbe@208 1465 goto moonbr_io_exec_error2;
jbe@208 1466 }
jbe@205 1467 lua_setfield(L, -2, "stdout");
jbe@208 1468 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1469 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208 1470 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1471 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208 1472 goto moonbr_io_exec_error2;
jbe@208 1473 }
jbe@205 1474 lua_setfield(L, -2, "stderr");
jbe@205 1475 return 1;
jbe@208 1476 moonbr_io_exec_error2:
jbe@208 1477 {
jbe@208 1478 int status;
jbe@208 1479 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208 1480 if (errno != EINTR) {
jbe@257 1481 moonbr_io_prepare_errmsg();
jbe@208 1482 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208 1483 }
jbe@208 1484 }
jbe@208 1485 }
jbe@208 1486 child->pid = 0;
jbe@208 1487 return lua_error(L);
jbe@205 1488 }
jbe@205 1489
jbe@205 1490 static int moonbr_io_childindex(lua_State *L) {
jbe@205 1491 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1492 luaL_checkany(L, 2);
jbe@205 1493 lua_getuservalue(L, 1);
jbe@205 1494 lua_pushvalue(L, 2);
jbe@205 1495 lua_gettable(L, -2);
jbe@205 1496 if (lua_isnil(L, -1)) {
jbe@205 1497 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 1498 lua_pushvalue(L, 2);
jbe@205 1499 lua_gettable(L, -2);
jbe@205 1500 }
jbe@205 1501 return 1;
jbe@205 1502 }
jbe@205 1503
jbe@205 1504 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205 1505 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1506 luaL_checkany(L, 2);
jbe@205 1507 luaL_checkany(L, 3);
jbe@205 1508 lua_getuservalue(L, 1);
jbe@205 1509 lua_pushvalue(L, 2);
jbe@205 1510 lua_pushvalue(L, 3);
jbe@205 1511 lua_settable(L, -3);
jbe@205 1512 return 0;
jbe@205 1513 }
jbe@205 1514
jbe@205 1515 static int moonbr_io_childgc(lua_State *L) {
jbe@205 1516 moonbr_io_child_t *child;
jbe@205 1517 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1518 if (child->pid) {
jbe@205 1519 int status;
jbe@205 1520 if (kill(child->pid, SIGKILL)) {
jbe@257 1521 moonbr_io_prepare_errmsg();
jbe@205 1522 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205 1523 }
jbe@205 1524 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1525 if (errno != EINTR) {
jbe@257 1526 moonbr_io_prepare_errmsg();
jbe@205 1527 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205 1528 }
jbe@205 1529 }
jbe@205 1530 }
jbe@205 1531 return 0;
jbe@205 1532 }
jbe@205 1533
jbe@205 1534 static int moonbr_io_kill(lua_State *L) {
jbe@205 1535 moonbr_io_child_t *child;
jbe@205 1536 int sig;
jbe@205 1537 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1538 sig = luaL_optinteger(L, 2, SIGTERM);
jbe@205 1539 if (!child->pid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@205 1540 if (kill(child->pid, sig)) {
jbe@257 1541 moonbr_io_prepare_errmsg();
jbe@205 1542 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@205 1543 }
jbe@205 1544 lua_settop(L, 1);
jbe@205 1545 return 1;
jbe@205 1546 }
jbe@205 1547
jbe@205 1548 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205 1549 moonbr_io_child_t *child;
jbe@205 1550 pid_t waitedpid;
jbe@205 1551 int status;
jbe@205 1552 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1553 if (!child->pid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@205 1554 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@205 1555 if (errno != EINTR) {
jbe@257 1556 moonbr_io_prepare_errmsg();
jbe@205 1557 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@205 1558 }
jbe@205 1559 }
jbe@205 1560 if (!waitedpid) {
jbe@219 1561 lua_pushboolean(L, 0);
jbe@219 1562 lua_pushliteral(L, "Process is still running");
jbe@219 1563 return 2;
jbe@205 1564 } else {
jbe@205 1565 child->pid = 0;
jbe@205 1566 if (WIFEXITED(status)) {
jbe@205 1567 lua_pushinteger(L, WEXITSTATUS(status));
jbe@205 1568 } else if (WIFSIGNALED(status)) {
jbe@205 1569 lua_pushinteger(L, -WTERMSIG(status));
jbe@205 1570 } else {
jbe@205 1571 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205 1572 }
jbe@219 1573 return 1;
jbe@205 1574 }
jbe@205 1575 }
jbe@205 1576
jbe@205 1577 static int moonbr_io_wait(lua_State *L) {
jbe@205 1578 return moonbr_io_wait_impl(L, 0);
jbe@205 1579 }
jbe@205 1580
jbe@205 1581 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205 1582 return moonbr_io_wait_impl(L, 1);
jbe@205 1583 }
jbe@205 1584
jbe@205 1585 #if LUA_VERSION_NUM >= 503
jbe@205 1586 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205 1587 #else
jbe@205 1588 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205 1589 #endif
jbe@205 1590 #if !(LUA_VERSION_NUM >= 503)
jbe@205 1591 int ctx = 0;
jbe@205 1592 lua_getctx(L, &ctx);
jbe@205 1593 #endif
jbe@205 1594 while (1) {
jbe@205 1595 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205 1596 lua_pushvalue(L, 1);
jbe@205 1597 lua_call(L, 1, 1);
jbe@205 1598 if (!lua_isnil(L, -1)) break;
jbe@205 1599 lua_pushvalue(L, 2);
jbe@205 1600 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@205 1601 }
jbe@205 1602 return 1;
jbe@205 1603 }
jbe@205 1604
jbe@205 1605 static int moonbr_io_wait_call(lua_State *L) {
jbe@205 1606 lua_settop(L, 2);
jbe@205 1607 #if LUA_VERSION_NUM >= 503
jbe@205 1608 return moonbr_io_wait_cont(L, 0, 0);
jbe@205 1609 #else
jbe@205 1610 return moonbr_io_wait_cont(L);
jbe@205 1611 #endif
jbe@205 1612 }
jbe@205 1613
jbe@205 1614 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205 1615
jbe@266 1616 static void moonbr_io_signalhandler(int sig) {
jbe@266 1617 int errno2 = errno;
jbe@266 1618 char buf[1] = {sig};
jbe@266 1619 write(moonbr_io_signalfd_write, buf, 1);
jbe@266 1620 errno = errno2;
jbe@266 1621 }
jbe@266 1622
jbe@266 1623 static int moonbr_io_signalsocket(lua_State *L) {
jbe@266 1624 int i, argc, sig;
jbe@266 1625 if (moonbr_io_signalfd_read < 0) {
jbe@266 1626 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, moonbr_io_signalfds)) {
jbe@266 1627 luaL_error(L, "Could not create socket pair for signal queueing");
jbe@266 1628 }
jbe@266 1629 }
jbe@271 1630 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALS_REGKEY);
jbe@271 1631 lua_insert(L, 1);
jbe@266 1632 argc = lua_gettop(L);
jbe@271 1633 for (i=2; i<=argc; i++) {
jbe@271 1634 if (lua_type(L, i) == LUA_TSTRING) {
jbe@271 1635 lua_pushvalue(L, i);
jbe@271 1636 lua_gettable(L, 1);
jbe@271 1637 sig = lua_tointeger(L, -1);
jbe@271 1638 lua_pop(L, 1);
jbe@271 1639 if (!sig) {
jbe@271 1640 lua_pushvalue(L, i);
jbe@271 1641 luaL_error(L, "Unknown signal \"%s\"", lua_tostring(L, i));
jbe@271 1642 }
jbe@271 1643 } else {
jbe@271 1644 sig = luaL_checkinteger(L, i);
jbe@271 1645 }
jbe@266 1646 errno = 0;
jbe@266 1647 signal(sig, moonbr_io_signalhandler);
jbe@266 1648 if (errno) luaL_error(L, "Could not install signal handler (invalid signal number?)");
jbe@266 1649 }
jbe@266 1650 lua_settop(L, 0);
jbe@266 1651 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALSOCKET_REGKEY);
jbe@266 1652 if (lua_isnil(L, -1)) {
jbe@266 1653 int fd = dup(moonbr_io_signalfd_read); /* TODO: determine how mooonbr_io_pushhandle acts in case of error */
jbe@266 1654 if (fd < 0) luaL_error(L, "Error in dup() system call");
jbe@266 1655 moonbr_io_pushhandle(L, fd);
jbe@266 1656 lua_pushvalue(L, -1);
jbe@266 1657 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALSOCKET_REGKEY);
jbe@266 1658 }
jbe@266 1659 return 1;
jbe@266 1660 }
jbe@266 1661
jbe@266 1662 static int moonbr_io_getpid(lua_State *L) {
jbe@266 1663 lua_pushinteger(L, getpid());
jbe@266 1664 return 1;
jbe@266 1665 }
jbe@266 1666
jbe@250 1667 #ifdef MOONBR_IO_USE_TLS
jbe@258 1668
jbe@250 1669 #define moonbr_io_poll_tls() \
jbe@250 1670 if (!handle->tlshandshake) { \
jbe@250 1671 lua_pushboolean(L, 1); \
jbe@250 1672 return 1; \
jbe@250 1673 } \
jbe@250 1674 if (handle->tlshandshake == TLS_WANT_POLLIN) { \
jbe@250 1675 if (fd < 0) { \
jbe@250 1676 lua_pushboolean(L, 1); \
jbe@250 1677 return 1; \
jbe@250 1678 } \
jbe@250 1679 FD_SET(fd, &readfds); \
jbe@250 1680 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1681 continue; \
jbe@250 1682 } \
jbe@250 1683 if (handle->tlshandshake == TLS_WANT_POLLOUT) { \
jbe@250 1684 if (fd < 0) { \
jbe@250 1685 lua_pushboolean(L, 1); \
jbe@250 1686 return 1; \
jbe@250 1687 } \
jbe@250 1688 FD_SET(fd, &writefds); \
jbe@250 1689 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1690 continue; \
jbe@250 1691 } \
jbe@250 1692 while (0)
jbe@258 1693
jbe@258 1694 #endif /* MOONBR_IO_USE_TLS */
jbe@250 1695
jbe@106 1696 static int moonbr_io_poll(lua_State *L) {
jbe@106 1697 moonbr_io_handle_t *handle;
jbe@108 1698 moonbr_io_listener_t *listener;
jbe@106 1699 int fd, isnum;
jbe@106 1700 int nfds = 0;
jbe@106 1701 fd_set readfds, writefds, exceptfds;
jbe@106 1702 struct timeval timeout = {0, };
jbe@106 1703 int status;
jbe@106 1704 FD_ZERO(&readfds);
jbe@106 1705 FD_ZERO(&writefds);
jbe@106 1706 FD_ZERO(&exceptfds);
jbe@106 1707 if (!lua_isnoneornil(L, 1)) {
jbe@106 1708 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1709 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1710 if (lua_toboolean(L, -1)) {
jbe@106 1711 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1712 if (handle) {
jbe@109 1713 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1714 fd = handle->fd;
jbe@247 1715 #if MOONBR_IO_USE_TLS
jbe@250 1716 moonbr_io_poll_tls();
jbe@247 1717 #endif
jbe@122 1718 if (
jbe@122 1719 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1720 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1721 ) {
jbe@109 1722 lua_pushboolean(L, 1);
jbe@109 1723 return 1;
jbe@109 1724 }
jbe@106 1725 } else {
jbe@108 1726 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1727 if (listener) {
jbe@108 1728 fd = listener->fd;
jbe@108 1729 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1730 } else {
jbe@108 1731 fd = lua_tointegerx(L, -2, &isnum);
jbe@108 1732 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@108 1733 }
jbe@106 1734 }
jbe@138 1735 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1736 FD_SET(fd, &readfds);
jbe@106 1737 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1738 }
jbe@106 1739 }
jbe@106 1740 }
jbe@106 1741 if (!lua_isnoneornil(L, 2)) {
jbe@106 1742 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1743 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1744 if (lua_toboolean(L, -1)) {
jbe@106 1745 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1746 if (handle) {
jbe@109 1747 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1748 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1749 fd = handle->fd;
jbe@247 1750 #if MOONBR_IO_USE_TLS
jbe@250 1751 moonbr_io_poll_tls();
jbe@247 1752 #endif
jbe@106 1753 } else {
jbe@108 1754 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1755 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1756 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1757 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1758 }
jbe@138 1759 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1760 FD_SET(fd, &writefds);
jbe@106 1761 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1762 }
jbe@106 1763 }
jbe@106 1764 }
jbe@106 1765 if (!lua_isnoneornil(L, 3)) {
jbe@106 1766 lua_Number n;
jbe@106 1767 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1768 if (isnum && n<0) {
jbe@146 1769 lua_pushboolean(L, 0);
jbe@146 1770 lua_pushliteral(L, "Negative timeout");
jbe@146 1771 return 2;
jbe@146 1772 } else if (isnum && n>=0 && n<100000000) {
jbe@106 1773 timeout.tv_sec = n;
jbe@106 1774 timeout.tv_usec = 1e6 * (n - timeout.tv_sec);
jbe@106 1775 } else {
jbe@106 1776 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1777 }
jbe@106 1778 status = select(nfds, &readfds, &writefds, &exceptfds, &timeout);
jbe@106 1779 } else {
jbe@106 1780 status = select(nfds, &readfds, &writefds, &exceptfds, NULL);
jbe@106 1781 }
jbe@106 1782 if (status == -1) {
jbe@106 1783 if (errno == EINTR) {
jbe@266 1784 lua_pushboolean(L, 1);
jbe@266 1785 return 1;
jbe@106 1786 } else {
jbe@257 1787 moonbr_io_prepare_errmsg();
jbe@106 1788 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@106 1789 }
jbe@106 1790 } else if (status == 0) {
jbe@106 1791 lua_pushboolean(L, 0);
jbe@106 1792 lua_pushliteral(L, "Timeout while polling file descriptors");
jbe@106 1793 return 2;
jbe@106 1794 } else {
jbe@106 1795 lua_pushboolean(L, 1);
jbe@106 1796 return 1;
jbe@106 1797 }
jbe@106 1798 }
jbe@106 1799
jbe@115 1800 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1801 lua_Number sub;
jbe@115 1802 struct timespec tp;
jbe@115 1803 sub = luaL_optnumber(L, 1, 0);
jbe@115 1804 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1805 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1806 }
jbe@115 1807 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1808 return 1;
jbe@115 1809 }
jbe@115 1810
jbe@243 1811 #ifdef MOONBR_IO_USE_TLS
jbe@243 1812
jbe@243 1813 #define moonbr_io_tlsconf_string(name, field, func) \
jbe@243 1814 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1815 lua_getfield(L, 1, (field)); \
jbe@243 1816 valuetype = lua_type(L, -1); \
jbe@243 1817 if (valuetype != LUA_TNIL) { \
jbe@243 1818 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1819 value = lua_tostring(L, -1); \
jbe@252 1820 if (func(tlsconf->config, value)) { \
jbe@243 1821 lua_pushnil(L); \
jbe@243 1822 lua_pushfstring(L, "Could not set " name " \"%s\"", value); \
jbe@243 1823 return 2; \
jbe@243 1824 } \
jbe@243 1825 } \
jbe@243 1826 lua_pop(L, 1);
jbe@243 1827
jbe@243 1828 #define moonbr_io_tlsconf_binary(name, field, func) \
jbe@243 1829 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1830 lua_getfield(L, 1, (field)); \
jbe@243 1831 valuetype = lua_type(L, -1); \
jbe@243 1832 if (valuetype != LUA_TNIL) { \
jbe@243 1833 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1834 value = lua_tolstring(L, -1, &valuelen); \
jbe@252 1835 if (func(tlsconf->config, (void *)value, valuelen)) { \
jbe@243 1836 lua_pushnil(L); \
jbe@243 1837 lua_pushliteral(L, "Could not set " name); \
jbe@243 1838 return 2; \
jbe@243 1839 } \
jbe@243 1840 } \
jbe@243 1841 lua_pop(L, 1);
jbe@243 1842
jbe@243 1843 static int moonbr_io_tlsconf(lua_State *L) {
jbe@252 1844 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1845 int valuetype;
jbe@243 1846 const char *value;
jbe@243 1847 size_t valuelen;
jbe@243 1848 luaL_checktype(L, 1, LUA_TTABLE);
jbe@252 1849 tlsconf = lua_newuserdata(L, sizeof(moonbr_io_tlsconf_t));
jbe@252 1850 tlsconf->config = tls_config_new();
jbe@252 1851 if (!tlsconf->config) {
jbe@243 1852 return luaL_error(L, "Could not allocate memory for TLS configuration");
jbe@243 1853 }
jbe@243 1854 luaL_setmetatable(L, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@245 1855 lua_getfield(L, 1, "mode");
jbe@252 1856 value = lua_tostring(L, -1);
jbe@252 1857 if (value && !strcmp(value, "server")) tlsconf->server = 1;
jbe@252 1858 else if (value && !strcmp(value, "client")) tlsconf->server = 0;
jbe@252 1859 else luaL_argcheck(L, 0, 1, "field \"mode\" must be set to \"server\" or \"client\"");
jbe@245 1860 lua_pop(L, 1);
jbe@243 1861 moonbr_io_tlsconf_string("CA file", "ca_file", tls_config_set_ca_file);
jbe@243 1862 moonbr_io_tlsconf_string("CA path", "ca_path", tls_config_set_ca_path);
jbe@243 1863 moonbr_io_tlsconf_binary("CA", "ca_mem", tls_config_set_ca_mem);
jbe@243 1864 moonbr_io_tlsconf_string("certificate file", "cert_file", tls_config_set_cert_file);
jbe@243 1865 moonbr_io_tlsconf_binary("certificate", "cert_mem", tls_config_set_cert_mem);
jbe@243 1866 moonbr_io_tlsconf_string("key file", "key_file", tls_config_set_key_file);
jbe@243 1867 moonbr_io_tlsconf_binary("key", "key_mem", tls_config_set_key_mem);
jbe@245 1868 #if LUA_VERSION_NUM >= 503
jbe@245 1869 valuetype = lua_getfield(L, 1, "verify_client");
jbe@245 1870 #else
jbe@244 1871 lua_getfield(L, 1, "verify_client");
jbe@245 1872 #endif
jbe@244 1873 if (lua_toboolean(L, -1)) {
jbe@252 1874 value = lua_tostring(L, -1);
jbe@252 1875 if (value && !strcmp(value, "required")) {
jbe@252 1876 tls_config_verify_client(tlsconf->config);
jbe@252 1877 } else if (value && !strcmp(value, "optional")) {
jbe@252 1878 tls_config_verify_client_optional(tlsconf->config);
jbe@244 1879 } else {
jbe@244 1880 luaL_argcheck(L, 0, 1, "field \"verify_client\" must be set to \"required\", \"optional\", or be false or nil");
jbe@244 1881 }
jbe@244 1882 }
jbe@244 1883 lua_pop(L, 1);
jbe@254 1884 // TODO: configurable legacy support
jbe@254 1885 // tls_config_set_protocols(tlsconf->config, TLS_PROTOCOLS_ALL);
jbe@254 1886 // tls_config_set_ciphers(tlsconf->config, "legacy");
jbe@243 1887 return 1;
jbe@243 1888 }
jbe@243 1889
jbe@252 1890 static int moonbr_io_tlsconfgc(lua_State *L) {
jbe@252 1891 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1892 tlsconf = luaL_checkudata(L, 1, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@252 1893 if (tlsconf->config) tls_config_free(tlsconf->config);
jbe@252 1894 tlsconf->config = NULL;
jbe@243 1895 return 0;
jbe@243 1896 }
jbe@243 1897
jbe@246 1898 static int moonbr_io_starttls(lua_State *L) {
jbe@246 1899 moonbr_io_handle_t *handle;
jbe@252 1900 moonbr_io_tlsconf_t *tlsconf;
jbe@246 1901 const char *servername;
jbe@246 1902 struct tls *tls, *tls2;
jbe@246 1903 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@246 1904 if (lua_type(L, 2) == LUA_TTABLE) {
jbe@246 1905 lua_pushcfunction(L, moonbr_io_tlsconf);
jbe@246 1906 lua_pushvalue(L, 2);
jbe@246 1907 lua_call(L, 1, 2);
jbe@246 1908 if (lua_isnil(L, -2)) return 2;
jbe@246 1909 lua_pop(L, 1);
jbe@246 1910 lua_replace(L, 2);
jbe@246 1911 }
jbe@246 1912 tlsconf = luaL_checkudata(L, 2, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@246 1913 if (handle->closed) return luaL_error(L, "Attempt to start TLS on a closed I/O handle");
jbe@246 1914 if (handle->finished) return luaL_error(L, "Attempt to start TLS on a finished I/O handle");
jbe@247 1915 if (handle->tls) return luaL_error(L, "Attempt to start TLS twice");
jbe@246 1916 if (handle->readbufin || handle->writebufin) {
jbe@246 1917 return luaL_error(L, "Attempt to start TLS on an I/O handle with non-empty buffers");
jbe@246 1918 }
jbe@252 1919 if (tlsconf->server) tls = tls_server();
jbe@252 1920 else {
jbe@246 1921 servername = luaL_checkstring(L, 3);
jbe@246 1922 tls = tls_client();
jbe@246 1923 }
jbe@246 1924 if (!tls) {
jbe@246 1925 return luaL_error(L, "Could not allocate memory for TLS context");
jbe@246 1926 }
jbe@252 1927 if (tls_configure(tls, tlsconf->config)) goto moonbr_io_starttls_error;
jbe@252 1928 if (tlsconf->server) {
jbe@246 1929 if (tls_accept_socket(tls, &tls2, handle->fd)) goto moonbr_io_starttls_error;
jbe@246 1930 handle->servertls = tls;
jbe@246 1931 handle->tls = tls2;
jbe@246 1932 } else {
jbe@246 1933 if (tls_connect_socket(tls, handle->fd, servername)) goto moonbr_io_starttls_error;
jbe@246 1934 handle->tls = tls;
jbe@246 1935 }
jbe@246 1936 lua_settop(L, 1);
jbe@246 1937 return 1;
jbe@246 1938 moonbr_io_starttls_error:
jbe@246 1939 lua_pushnil(L);
jbe@246 1940 lua_pushstring(L, tls_error(tls));
jbe@246 1941 tls_free(tls);
jbe@246 1942 return 2;
jbe@246 1943 }
jbe@246 1944
jbe@258 1945 #endif /* MOONBR_IO_USE_TLS */
jbe@243 1946
jbe@79 1947 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1948 {"read", moonbr_io_read},
jbe@85 1949 {"read_nb", moonbr_io_read_nb},
jbe@140 1950 {"read_call", moonbr_io_read_call},
jbe@140 1951 {"read_yield", moonbr_io_read_yield},
jbe@86 1952 {"drain", moonbr_io_drain},
jbe@86 1953 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1954 {"drain_call", moonbr_io_drain_call},
jbe@144 1955 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1956 {"write", moonbr_io_write},
jbe@81 1957 {"write_nb", moonbr_io_write_nb},
jbe@145 1958 {"write_call", moonbr_io_write_call},
jbe@145 1959 {"write_yield", moonbr_io_write_yield},
jbe@80 1960 {"flush", moonbr_io_flush},
jbe@81 1961 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1962 {"flush_call", moonbr_io_flush_call},
jbe@145 1963 {"flush_yield", moonbr_io_flush_yield},
jbe@88 1964 {"finish", moonbr_io_finish},
jbe@87 1965 {"close", moonbr_io_close},
jbe@85 1966 {"reset", moonbr_io_reset},
jbe@246 1967 #ifdef MOONBR_IO_USE_TLS
jbe@246 1968 {"starttls", moonbr_io_starttls},
jbe@246 1969 #endif
jbe@79 1970 {NULL, NULL}
jbe@79 1971 };
jbe@79 1972
jbe@79 1973 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 1974 {"__index", moonbr_io_handleindex},
jbe@79 1975 {"__newindex", moonbr_io_handlenewindex},
jbe@108 1976 {"__gc", moonbr_io_handlegc},
jbe@108 1977 {NULL, NULL}
jbe@108 1978 };
jbe@108 1979
jbe@108 1980 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 1981 {"accept", moonbr_io_accept},
jbe@108 1982 {"accept_nb", moonbr_io_accept_nb},
jbe@108 1983 {"close", moonbr_io_unlisten},
jbe@108 1984 {NULL, NULL}
jbe@108 1985 };
jbe@108 1986
jbe@108 1987 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 1988 {"__gc", moonbr_io_listenergc},
jbe@79 1989 {NULL, NULL}
jbe@79 1990 };
jbe@79 1991
jbe@205 1992 static const struct luaL_Reg moonbr_io_child_methods[] = {
jbe@205 1993 {"kill", moonbr_io_kill},
jbe@205 1994 {"wait", moonbr_io_wait},
jbe@205 1995 {"wait_nb", moonbr_io_wait_nb},
jbe@205 1996 {"wait_call", moonbr_io_wait_call},
jbe@205 1997 {"wait_yield", moonbr_io_wait_yield},
jbe@205 1998 {NULL, NULL}
jbe@205 1999 };
jbe@205 2000
jbe@205 2001 static const struct luaL_Reg moonbr_io_child_metamethods[] = {
jbe@205 2002 {"__index", moonbr_io_childindex},
jbe@205 2003 {"__newindex", moonbr_io_childnewindex},
jbe@205 2004 {"__gc", moonbr_io_childgc},
jbe@205 2005 {NULL, NULL}
jbe@205 2006 };
jbe@205 2007
jbe@79 2008 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 2009 {"localconnect", moonbr_io_localconnect},
jbe@111 2010 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 2011 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 2012 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 2013 {"locallisten", moonbr_io_locallisten},
jbe@108 2014 {"tcplisten", moonbr_io_tcplisten},
jbe@205 2015 {"exec", moonbr_io_exec},
jbe@266 2016 {"signalsocket", moonbr_io_signalsocket},
jbe@266 2017 {"getpid", moonbr_io_getpid},
jbe@106 2018 {"poll", moonbr_io_poll},
jbe@115 2019 {"timeref", moonbr_io_timeref},
jbe@243 2020 #ifdef MOONBR_IO_USE_TLS
jbe@243 2021 {"tlsconf", moonbr_io_tlsconf},
jbe@243 2022 #endif
jbe@79 2023 {NULL, NULL}
jbe@79 2024 };
jbe@79 2025
jbe@243 2026 #ifdef MOONBR_IO_USE_TLS
jbe@258 2027
jbe@243 2028 static const struct luaL_Reg moonbr_io_tlsconf_metamethods[] = {
jbe@243 2029 {"__gc", moonbr_io_tlsconfgc},
jbe@243 2030 {NULL, NULL}
jbe@243 2031 };
jbe@258 2032
jbe@258 2033 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2034
jbe@79 2035 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 2036
jbe@113 2037 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@266 2038 moonbr_io_signalfd_read = -1;
jbe@266 2039 moonbr_io_signalfd_write = -1;
jbe@113 2040
jbe@80 2041 lua_newtable(L); // module
jbe@80 2042
jbe@79 2043 lua_newtable(L); // public metatable
jbe@79 2044 lua_newtable(L); // handle methods
jbe@79 2045 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 2046 lua_pushvalue(L, -1);
jbe@146 2047 lua_setfield(L, -4, "handle_pt");
jbe@79 2048 lua_setfield(L, -2, "__index");
jbe@79 2049 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 2050
jbe@79 2051 lua_newtable(L); // handle metatable
jbe@79 2052 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 2053 lua_pushvalue(L, -1);
jbe@146 2054 lua_setfield(L, -3, "handle_mt");
jbe@79 2055 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 2056
jbe@108 2057 lua_newtable(L); // listener metatable
jbe@108 2058 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 2059 lua_newtable(L); // listener methods
jbe@108 2060 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 2061 lua_pushvalue(L, -1);
jbe@146 2062 lua_setfield(L, -4, "listener_pt");
jbe@108 2063 lua_setfield(L, -2, "__index");
jbe@146 2064 lua_pushvalue(L, -1);
jbe@146 2065 lua_setfield(L, -3, "listener_mt");
jbe@108 2066 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 2067
jbe@205 2068 lua_newtable(L); // child methods
jbe@205 2069 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205 2070 lua_pushvalue(L, -1);
jbe@205 2071 lua_setfield(L, -3, "child_pt");
jbe@205 2072 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 2073 lua_newtable(L); // child metatable
jbe@205 2074 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205 2075 lua_pushvalue(L, -1);
jbe@205 2076 lua_setfield(L, -3, "child_mt");
jbe@205 2077 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 2078
jbe@243 2079 #ifdef MOONBR_IO_USE_TLS
jbe@243 2080 if(tls_init()) {
jbe@243 2081 return luaL_error(L, "Could not initialize TLS library");
jbe@243 2082 }
jbe@243 2083 lua_newtable(L); // tlsconf metatable
jbe@243 2084 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243 2085 lua_pushvalue(L, -1);
jbe@243 2086 lua_setfield(L, -3, "tlsconf_mt");
jbe@243 2087 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243 2088 #endif
jbe@243 2089
jbe@205 2090 moonbr_io_pushhandle(L, 0);
jbe@205 2091 lua_setfield(L, -2, "stdin");
jbe@205 2092 moonbr_io_pushhandle(L, 1);
jbe@205 2093 lua_setfield(L, -2, "stdout");
jbe@205 2094 moonbr_io_pushhandle(L, 2);
jbe@205 2095 lua_setfield(L, -2, "stderr");
jbe@270 2096
jbe@270 2097 lua_newtable(L); // signal numbers
jbe@270 2098 lua_pushinteger(L, SIGHUP); lua_setfield(L, -2, "HUP");
jbe@270 2099 lua_pushinteger(L, SIGINT); lua_setfield(L, -2, "INT");
jbe@270 2100 lua_pushinteger(L, SIGQUIT); lua_setfield(L, -2, "QUIT");
jbe@270 2101 lua_pushinteger(L, SIGABRT); lua_setfield(L, -2, "ABRT");
jbe@270 2102 lua_pushinteger(L, SIGPIPE); lua_setfield(L, -2, "PIPE");
jbe@270 2103 lua_pushinteger(L, SIGALRM); lua_setfield(L, -2, "ALRM");
jbe@270 2104 lua_pushinteger(L, SIGTERM); lua_setfield(L, -2, "TERM");
jbe@270 2105 lua_pushinteger(L, SIGTSTP); lua_setfield(L, -2, "TSTP");
jbe@270 2106 lua_pushinteger(L, SIGCONT); lua_setfield(L, -2, "CONT");
jbe@270 2107 lua_pushinteger(L, SIGVTALRM); lua_setfield(L, -2, "VTALRM");
jbe@272 2108 #ifdef SIGINFO
jbe@270 2109 lua_pushinteger(L, SIGINFO); lua_setfield(L, -2, "INFO");
jbe@272 2110 #endif
jbe@270 2111 lua_pushinteger(L, SIGUSR1); lua_setfield(L, -2, "USR1");
jbe@270 2112 lua_pushinteger(L, SIGUSR2); lua_setfield(L, -2, "USR2");
jbe@271 2113 lua_pushvalue(L, -1);
jbe@271 2114 lua_setfield(L, -3, "signals");
jbe@271 2115 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALS_REGKEY);
jbe@205 2116
jbe@79 2117 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 2118 return 1;
jbe@79 2119
jbe@79 2120 }
jbe@79 2121

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