moonbridge

annotate moonbridge_io.c @ 297:dd0ec48592e7

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Bugfix regarding waiting for child processes in moonbridge_io.poll(...)
author jbe
date Sat Jun 17 22:43:44 2017 +0200 (2017-06-17)
parents ce109800ae2d
children 09d6428fdf6c
rev   line source
jbe@209 1
jbe@209 2 #ifndef __has_include
jbe@209 3 #define __has_include(x) 0
jbe@209 4 #endif
jbe@79 5
jbe@79 6 #include <stdlib.h>
jbe@135 7 #include <stdint.h>
jbe@135 8 #include <string.h>
jbe@135 9 #include <errno.h>
jbe@79 10 #include <unistd.h>
jbe@135 11 #include <signal.h>
jbe@135 12 #include <fcntl.h>
jbe@135 13 #include <sys/stat.h>
jbe@79 14 #include <sys/socket.h>
jbe@111 15 #include <sys/un.h>
jbe@95 16 #include <netinet/in.h>
jbe@95 17 #include <netinet/tcp.h>
jbe@135 18 #include <sys/select.h>
jbe@136 19 #include <time.h>
jbe@135 20 #include <netdb.h>
jbe@107 21 #include <arpa/inet.h>
jbe@205 22 #include <sys/types.h>
jbe@205 23 #include <sys/wait.h>
jbe@209 24 #if defined(__linux__) || __has_include(<bsd/unistd.h>)
jbe@209 25 #include <bsd/unistd.h>
jbe@209 26 #endif
jbe@211 27
jbe@243 28 #ifdef MOONBR_IO_USE_TLS
jbe@243 29 #include <tls.h>
jbe@243 30 #endif
jbe@243 31
jbe@79 32 #include <lua.h>
jbe@79 33 #include <lauxlib.h>
jbe@79 34 #include <lualib.h>
jbe@79 35
jbe@149 36 #include <assert.h>
jbe@149 37
jbe@80 38 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 39 #define MOONBR_IO_READBUFLEN 4096
jbe@80 40 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 41
jbe@108 42 #define MOONBR_IO_LISTEN_BACKLOG 1024
jbe@108 43
jbe@213 44 #define MOONBR_IO_STRERROR_R_MSG "Error detail unavailable due to noncompliant strerror_r() implementation"
jbe@257 45 #define moonbr_io_prepare_errmsg() \
jbe@213 46 char errmsg[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG; \
jbe@80 47 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@257 48 #define moonbr_io_return_prepared_errmsg() \
jbe@257 49 lua_pushnil(L); \
jbe@257 50 lua_pushstring(L, errmsg); \
jbe@257 51 return 2
jbe@257 52 #define moonbr_io_return_errmsg() \
jbe@257 53 do { \
jbe@257 54 moonbr_io_prepare_errmsg(); \
jbe@257 55 moonbr_io_return_prepared_errmsg(); \
jbe@257 56 } while (0)
jbe@80 57
jbe@79 58 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 59 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 60 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205 61 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205 62 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@79 63
jbe@243 64 #ifdef MOONBR_IO_USE_TLS
jbe@258 65
jbe@243 66 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252 67
jbe@252 68 typedef struct {
jbe@252 69 struct tls_config *config;
jbe@252 70 int server;
jbe@252 71 } moonbr_io_tlsconf_t;
jbe@258 72
jbe@258 73 #endif /* MOONBR_IO_USE_TLS */
jbe@243 74
jbe@79 75 typedef struct {
jbe@79 76 int fd;
jbe@107 77 int issock;
jbe@107 78 sa_family_t addrfam;
jbe@94 79 int finished;
jbe@94 80 int closed;
jbe@81 81 int nonblocking;
jbe@95 82 int nopush;
jbe@85 83 int readerr;
jbe@105 84 int readbufin;
jbe@105 85 int readbufout;
jbe@81 86 int writeerr;
jbe@83 87 size_t writeleft;
jbe@132 88 size_t flushedleft;
jbe@83 89 #if LUA_VERSION_NUM >= 503
jbe@83 90 lua_Integer writeqin;
jbe@83 91 lua_Integer writeqout;
jbe@83 92 #else
jbe@83 93 int writeqin;
jbe@83 94 int writeqout;
jbe@83 95 #endif
jbe@83 96 size_t writeqoff;
jbe@103 97 int writebufin;
jbe@103 98 int writebufout;
jbe@85 99 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 100 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246 101 #ifdef MOONBR_IO_USE_TLS
jbe@250 102 struct tls *tls;
jbe@250 103 struct tls *servertls;
jbe@250 104 int tlshandshake;
jbe@261 105 int tlsclosing;
jbe@246 106 #endif
jbe@79 107 } moonbr_io_handle_t;
jbe@79 108
jbe@108 109 typedef struct {
jbe@108 110 int fd;
jbe@118 111 sa_family_t addrfam;
jbe@108 112 int nonblocking;
jbe@108 113 } moonbr_io_listener_t;
jbe@108 114
jbe@205 115 typedef struct {
jbe@205 116 pid_t pid;
jbe@205 117 } moonbr_io_child_t;
jbe@205 118
jbe@293 119 volatile sig_atomic_t moonbr_io_sigterm_flag = 0;
jbe@297 120 volatile sig_atomic_t moonbr_io_sigchld_flag = 0;
jbe@284 121
jbe@148 122 static int moonbr_io_yield(lua_State *L) {
jbe@149 123 return lua_yield(L, lua_gettop(L));
jbe@140 124 }
jbe@140 125
jbe@140 126 #if LUA_VERSION_NUM >= 503
jbe@140 127 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 128 #else
jbe@140 129 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 130 #endif
jbe@140 131 return lua_gettop(L);
jbe@140 132 }
jbe@140 133
jbe@145 134 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 135 static int yieldfunc(lua_State *L) { \
jbe@145 136 int args; \
jbe@145 137 lua_pushcfunction(L, callfunc); \
jbe@145 138 lua_insert(L, 1); \
jbe@145 139 args = lua_gettop(L); \
jbe@148 140 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 141 lua_insert(L, 3); \
jbe@145 142 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 143 return lua_gettop(L); \
jbe@145 144 }
jbe@145 145
jbe@256 146 static int moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 147 int flags;
jbe@256 148 if (handle->nonblocking == nonblocking) return 0;
jbe@95 149 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@256 150 if (flags == -1) return -1;
jbe@95 151 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 152 else flags &= ~O_NONBLOCK;
jbe@256 153 if (fcntl(handle->fd, F_SETFL, flags) == -1) return -1;
jbe@95 154 handle->nonblocking = nonblocking;
jbe@256 155 return 0;
jbe@81 156 }
jbe@81 157
jbe@256 158 static int moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 159 struct linger lingerval = { 0, };
jbe@256 160 if (!handle->issock) return 0;
jbe@87 161 if (timeout >= 0) {
jbe@87 162 lingerval.l_onoff = 1;
jbe@87 163 lingerval.l_linger = timeout;
jbe@87 164 }
jbe@256 165 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) return -1;
jbe@256 166 return 0;
jbe@87 167 }
jbe@87 168
jbe@256 169 static inline int moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 170 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 171 if (
jbe@107 172 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 173 handle->nopush == nopush
jbe@256 174 ) return 0;
jbe@96 175 #if defined(TCP_NOPUSH)
jbe@256 176 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) return -1;
jbe@104 177 #elif defined(TCP_CORK)
jbe@256 178 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) return -1;
jbe@251 179 #endif
jbe@95 180 handle->nopush = nopush;
jbe@96 181 #else
jbe@96 182 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 183 #endif
jbe@256 184 return 0;
jbe@95 185 }
jbe@95 186
jbe@86 187 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 188 moonbr_io_handle_t *handle;
jbe@85 189 lua_Integer maxread;
jbe@85 190 const char *terminatorstr;
jbe@210 191 size_t terminatorlen;
jbe@210 192 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 193 luaL_Buffer luabuf;
jbe@85 194 size_t luabufcnt = 0;
jbe@105 195 int remaining;
jbe@85 196 char *terminatorpos;
jbe@103 197 ssize_t bytesread;
jbe@85 198 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153 199 maxread = luaL_optinteger(L, 2, -1);
jbe@85 200 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 201 if (terminatorlen) {
jbe@85 202 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 203 terminator = terminatorstr[0];
jbe@85 204 }
jbe@86 205 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 206 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 207 if (handle->readerr) {
jbe@85 208 lua_pushnil(L);
jbe@85 209 lua_pushliteral(L, "Previous read error");
jbe@85 210 return 2;
jbe@85 211 }
jbe@143 212 if (handle->fd < 0) {
jbe@143 213 /* fake EOF to simulate shutdown */
jbe@143 214 if (!drain) lua_pushliteral(L, "");
jbe@143 215 else lua_pushinteger(L, 0);
jbe@143 216 lua_pushliteral(L, "eof");
jbe@143 217 return 2;
jbe@143 218 }
jbe@105 219 handle->readerr = 1;
jbe@257 220 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@86 221 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 222 while (1) {
jbe@105 223 remaining = -1;
jbe@142 224 terminatorpos = NULL;
jbe@105 225 if (
jbe@153 226 maxread >= 0 &&
jbe@143 227 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 228 ) {
jbe@142 229 remaining = (size_t)maxread - luabufcnt;
jbe@193 230 if (terminatorlen) {
jbe@193 231 terminatorpos = memchr(
jbe@193 232 handle->readbuf + handle->readbufout,
jbe@193 233 terminator,
jbe@193 234 remaining
jbe@193 235 );
jbe@193 236 }
jbe@85 237 } else if (terminatorlen) {
jbe@105 238 terminatorpos = memchr(
jbe@105 239 handle->readbuf + handle->readbufout,
jbe@105 240 terminator,
jbe@105 241 handle->readbufin - handle->readbufout
jbe@105 242 );
jbe@85 243 }
jbe@142 244 if (terminatorpos) remaining = 1 + (
jbe@142 245 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 246 );
jbe@105 247 if (remaining >= 0) {
jbe@86 248 if (!drain) {
jbe@105 249 luaL_addlstring(
jbe@105 250 &luabuf,
jbe@105 251 handle->readbuf + handle->readbufout,
jbe@105 252 remaining
jbe@105 253 );
jbe@86 254 luaL_pushresult(&luabuf);
jbe@90 255 } else {
jbe@105 256 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 257 }
jbe@143 258 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 259 else lua_pushliteral(L, "maxlen");
jbe@105 260 handle->readbufout += remaining;
jbe@105 261 if (handle->readbufout == handle->readbufin) {
jbe@105 262 handle->readbufin = 0;
jbe@143 263 handle->readbufout = 0;
jbe@105 264 }
jbe@104 265 handle->readerr = 0;
jbe@143 266 return 2;
jbe@85 267 }
jbe@105 268 if (!drain) luaL_addlstring(
jbe@105 269 &luabuf,
jbe@105 270 handle->readbuf + handle->readbufout,
jbe@105 271 handle->readbufin - handle->readbufout
jbe@105 272 );
jbe@105 273 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 274 handle->readbufout = 0;
jbe@249 275 #ifdef MOONBR_IO_USE_TLS
jbe@249 276 if (handle->tls) {
jbe@250 277 do {
jbe@250 278 if (!handle->tlshandshake) {
jbe@250 279 do bytesread = tls_handshake(handle->tls);
jbe@250 280 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 281 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 282 handle->tlshandshake = bytesread;
jbe@250 283 errno = EAGAIN;
jbe@250 284 break;
jbe@250 285 }
jbe@250 286 if (bytesread < 0) {
jbe@250 287 lua_pushnil(L);
jbe@250 288 lua_pushstring(L, tls_error(handle->tls));
jbe@250 289 return 2;
jbe@250 290 }
jbe@250 291 handle->tlshandshake = 1;
jbe@250 292 }
jbe@250 293 do bytesread = tls_read(handle->tls, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@250 294 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 295 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 296 errno = EAGAIN;
jbe@250 297 break;
jbe@250 298 }
jbe@250 299 if (bytesread < 0) {
jbe@250 300 lua_pushnil(L);
jbe@250 301 lua_pushstring(L, tls_error(handle->tls));
jbe@250 302 return 2;
jbe@250 303 }
jbe@250 304 } while (0);
jbe@249 305 }
jbe@249 306 else
jbe@249 307 #endif
jbe@249 308 do bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@249 309 while (bytesread < 0 && (errno == EINTR));
jbe@105 310 if (
jbe@105 311 bytesread == 0 || (
jbe@105 312 nonblocking &&
jbe@105 313 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 314 )
jbe@105 315 ) {
jbe@105 316 handle->readbufin = 0;
jbe@143 317 if (!drain) luaL_pushresult(&luabuf);
jbe@143 318 else lua_pushinteger(L, luabufcnt);
jbe@143 319 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 320 else lua_pushliteral(L, "block");
jbe@105 321 handle->readerr = 0;
jbe@143 322 return 2;
jbe@105 323 }
jbe@257 324 if (bytesread < 0) moonbr_io_return_errmsg();
jbe@105 325 handle->readbufin = bytesread;
jbe@86 326 }
jbe@85 327 }
jbe@85 328
jbe@85 329 static int moonbr_io_read(lua_State *L) {
jbe@86 330 return moonbr_io_read_impl(L, 0, 0);
jbe@85 331 }
jbe@85 332
jbe@85 333 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 334 return moonbr_io_read_impl(L, 1, 0);
jbe@86 335 }
jbe@86 336
jbe@86 337 static int moonbr_io_drain(lua_State *L) {
jbe@86 338 return moonbr_io_read_impl(L, 0, 1);
jbe@86 339 }
jbe@86 340
jbe@86 341 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 342 return moonbr_io_read_impl(L, 1, 1);
jbe@85 343 }
jbe@85 344
jbe@140 345 #if LUA_VERSION_NUM >= 503
jbe@140 346 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 347 #else
jbe@140 348 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 349 #endif
jbe@143 350 lua_Integer remaining;
jbe@143 351 size_t len;
jbe@140 352 #if !(LUA_VERSION_NUM >= 503)
jbe@140 353 int ctx = 0;
jbe@140 354 lua_getctx(L, &ctx);
jbe@140 355 #endif
jbe@140 356 remaining = lua_tointeger(L, 3);
jbe@140 357 while (1) {
jbe@140 358 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 359 lua_pushvalue(L, 1);
jbe@140 360 lua_pushvalue(L, 3);
jbe@140 361 lua_pushvalue(L, 4);
jbe@140 362 lua_call(L, 3, 2);
jbe@143 363 if (lua_isnil(L, -2)) return 2;
jbe@143 364 lua_insert(L, -2);
jbe@143 365 len = lua_rawlen(L, -1);
jbe@143 366 if (ctx == 0) {
jbe@143 367 lua_replace(L, 5);
jbe@143 368 ctx = 1;
jbe@143 369 } else if (ctx == 1) {
jbe@143 370 lua_pushvalue(L, 5);
jbe@143 371 lua_newtable(L);
jbe@143 372 lua_replace(L, 5);
jbe@143 373 lua_rawseti(L, 5, 2);
jbe@143 374 lua_rawseti(L, 5, 1);
jbe@143 375 ctx = 2;
jbe@140 376 } else {
jbe@143 377 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 378 }
jbe@144 379 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 380 lua_pop(L, 1);
jbe@144 381 if (remaining >= 0 && len) {
jbe@143 382 remaining -= len;
jbe@143 383 lua_pushinteger(L, remaining);
jbe@143 384 lua_replace(L, 3);
jbe@143 385 }
jbe@140 386 lua_pushvalue(L, 2);
jbe@152 387 lua_callk(L, 0, 0, ctx, moonbr_io_read_cont);
jbe@140 388 }
jbe@140 389 if (ctx == 1) {
jbe@140 390 lua_pushvalue(L, 5);
jbe@140 391 } else {
jbe@140 392 luaL_Buffer buf;
jbe@140 393 lua_Integer i, chunkcount;
jbe@140 394 chunkcount = lua_rawlen(L, 5);
jbe@140 395 luaL_buffinit(L, &buf);
jbe@140 396 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 397 lua_rawgeti(L, 5, i);
jbe@140 398 luaL_addvalue(&buf);
jbe@140 399 }
jbe@140 400 luaL_pushresult(&buf);
jbe@140 401 }
jbe@143 402 lua_pushvalue(L, -2);
jbe@143 403 return 2;
jbe@140 404 }
jbe@140 405
jbe@140 406 static int moonbr_io_read_call(lua_State *L) {
jbe@140 407 lua_settop(L, 4);
jbe@140 408 lua_pushnil(L);
jbe@140 409 #if LUA_VERSION_NUM >= 503
jbe@140 410 return moonbr_io_read_cont(L, 0, 0);
jbe@140 411 #else
jbe@140 412 return moonbr_io_read_cont(L);
jbe@140 413 #endif
jbe@140 414 }
jbe@140 415
jbe@145 416 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 417
jbe@144 418 #if LUA_VERSION_NUM >= 503
jbe@144 419 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 420 #else
jbe@144 421 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 422 #endif
jbe@144 423 lua_Integer remaining, len;
jbe@144 424 size_t totallen = 0;
jbe@144 425 #if !(LUA_VERSION_NUM >= 503)
jbe@144 426 int ctx = 0;
jbe@144 427 lua_getctx(L, &ctx);
jbe@144 428 #endif
jbe@144 429 remaining = lua_tointeger(L, 3);
jbe@144 430 while (1) {
jbe@144 431 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 432 lua_pushvalue(L, 1);
jbe@144 433 lua_pushvalue(L, 3);
jbe@144 434 lua_pushvalue(L, 4);
jbe@144 435 lua_call(L, 3, 2);
jbe@144 436 if (lua_isnil(L, -2)) return 2;
jbe@144 437 lua_insert(L, -2);
jbe@144 438 len = lua_tointeger(L, -1);
jbe@144 439 lua_pop(L, 1);
jbe@144 440 totallen += len;
jbe@144 441 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 442 lua_pop(L, 1);
jbe@144 443 if (remaining >= 0 && len) {
jbe@144 444 remaining -= len;
jbe@144 445 lua_pushinteger(L, remaining);
jbe@144 446 lua_replace(L, 3);
jbe@144 447 }
jbe@144 448 lua_pushvalue(L, 2);
jbe@152 449 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 450 }
jbe@144 451 lua_pushinteger(L, totallen);
jbe@144 452 lua_pushvalue(L, -2);
jbe@144 453 return 2;
jbe@144 454 }
jbe@144 455
jbe@144 456 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 457 #if LUA_VERSION_NUM >= 503
jbe@144 458 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 459 #else
jbe@144 460 return moonbr_io_drain_cont(L);
jbe@144 461 #endif
jbe@144 462 }
jbe@144 463
jbe@145 464 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 465
jbe@250 466 #ifdef MOONBR_IO_USE_TLS
jbe@258 467
jbe@250 468 #define moonbr_io_write_tls(buf, buflen) \
jbe@250 469 if (handle->tls) { \
jbe@250 470 do { \
jbe@250 471 if (!handle->tlshandshake) { \
jbe@250 472 do written = tls_handshake(handle->tls); \
jbe@250 473 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 474 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 475 handle->tlshandshake = written; \
jbe@250 476 errno = EAGAIN; \
jbe@250 477 break; \
jbe@250 478 } \
jbe@250 479 if (written < 0) { \
jbe@250 480 lua_pushnil(L); \
jbe@250 481 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 482 return 2; \
jbe@250 483 } \
jbe@250 484 handle->tlshandshake = 1; \
jbe@250 485 } \
jbe@250 486 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250 487 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 488 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 489 errno = EAGAIN; \
jbe@250 490 break; \
jbe@250 491 } \
jbe@250 492 if (written < 0) { \
jbe@250 493 lua_pushnil(L); \
jbe@250 494 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 495 return 2; \
jbe@250 496 } \
jbe@250 497 } while (0); \
jbe@250 498 } \
jbe@250 499 else
jbe@258 500
jbe@258 501 #endif /* MOONBR_IO_USE_TLS */
jbe@250 502
jbe@81 503 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 504 moonbr_io_handle_t *handle;
jbe@80 505 int i, top;
jbe@80 506 const char *str;
jbe@92 507 size_t strlen;
jbe@103 508 ssize_t written;
jbe@80 509 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 510 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 511 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 512 if (handle->writeerr) {
jbe@80 513 lua_pushnil(L);
jbe@80 514 lua_pushliteral(L, "Previous write error");
jbe@80 515 return 2;
jbe@80 516 }
jbe@103 517 handle->writeerr = 1;
jbe@257 518 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84 519 top = lua_gettop(L);
jbe@81 520 lua_getuservalue(L, 1);
jbe@103 521 lua_getfield(L, -1, "writequeue");
jbe@84 522 for (i=2; i<=top; i++) {
jbe@84 523 luaL_checklstring(L, i, &strlen);
jbe@84 524 lua_pushvalue(L, i);
jbe@84 525 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 526 handle->writeleft += strlen;
jbe@81 527 }
jbe@132 528 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 529 while (handle->writeqout != handle->writeqin) {
jbe@83 530 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 531 str = lua_tolstring(L, -1, &strlen);
jbe@92 532 while (handle->writeqoff < strlen) {
jbe@103 533 if (
jbe@132 534 strlen - handle->writeqoff <
jbe@103 535 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 536 ) {
jbe@103 537 memcpy(
jbe@103 538 handle->writebuf + handle->writebufin,
jbe@103 539 str + handle->writeqoff,
jbe@103 540 strlen - handle->writeqoff
jbe@103 541 );
jbe@103 542 handle->writebufin += strlen - handle->writeqoff;
jbe@80 543 break;
jbe@80 544 } else {
jbe@103 545 memcpy(
jbe@103 546 handle->writebuf + handle->writebufin,
jbe@103 547 str + handle->writeqoff,
jbe@103 548 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 549 );
jbe@103 550 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228 551 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103 552 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257 553 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 554 #ifdef MOONBR_IO_USE_TLS
jbe@250 555 moonbr_io_write_tls(
jbe@250 556 handle->writebuf + handle->writebufout,
jbe@250 557 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250 558 )
jbe@249 559 #endif
jbe@103 560 written = write(
jbe@103 561 handle->fd,
jbe@103 562 handle->writebuf + handle->writebufout,
jbe@103 563 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 564 );
jbe@103 565 if (written < 0) {
jbe@81 566 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 567 goto moonbr_io_write_impl_block;
jbe@257 568 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103 569 } else {
jbe@103 570 handle->writebufout += written;
jbe@103 571 handle->writeleft -= written;
jbe@133 572 if (handle->flushedleft) {
jbe@133 573 if (written >= handle->flushedleft) {
jbe@133 574 handle->flushedleft = 0;
jbe@257 575 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 576 } else {
jbe@133 577 handle->flushedleft -= written;
jbe@133 578 }
jbe@133 579 }
jbe@80 580 }
jbe@80 581 }
jbe@103 582 handle->writebufin = 0;
jbe@103 583 handle->writebufout = 0;
jbe@80 584 }
jbe@80 585 }
jbe@81 586 handle->writeqoff = 0;
jbe@81 587 lua_pop(L, 1);
jbe@81 588 lua_pushnil(L);
jbe@83 589 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 590 }
jbe@132 591 while (handle->flushedleft) {
jbe@257 592 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 593 #ifdef MOONBR_IO_USE_TLS
jbe@250 594 moonbr_io_write_tls(
jbe@250 595 handle->writebuf + handle->writebufout,
jbe@250 596 handle->writebufin - handle->writebufout
jbe@250 597 )
jbe@249 598 #endif
jbe@132 599 written = write(
jbe@132 600 handle->fd,
jbe@132 601 handle->writebuf + handle->writebufout,
jbe@132 602 handle->writebufin - handle->writebufout
jbe@132 603 );
jbe@132 604 if (written < 0) {
jbe@132 605 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 606 goto moonbr_io_write_impl_block;
jbe@257 607 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132 608 } else {
jbe@132 609 handle->writebufout += written;
jbe@132 610 handle->writeleft -= written;
jbe@133 611 if (handle->flushedleft) {
jbe@133 612 if (written >= handle->flushedleft) {
jbe@133 613 handle->flushedleft = 0;
jbe@257 614 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 615 } else {
jbe@133 616 handle->flushedleft -= written;
jbe@133 617 }
jbe@133 618 }
jbe@81 619 }
jbe@132 620 }
jbe@132 621 if (handle->writebufout == handle->writebufin) {
jbe@103 622 handle->writebufin = 0;
jbe@103 623 handle->writebufout = 0;
jbe@81 624 }
jbe@103 625 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 626 else lua_pushvalue(L, 1);
jbe@103 627 handle->writeerr = 0;
jbe@80 628 return 1;
jbe@81 629 moonbr_io_write_impl_block:
jbe@91 630 lua_pushinteger(L, handle->writeleft);
jbe@103 631 handle->writeerr = 0;
jbe@81 632 return 1;
jbe@81 633 }
jbe@81 634
jbe@81 635 static int moonbr_io_write(lua_State *L) {
jbe@81 636 return moonbr_io_write_impl(L, 0, 0);
jbe@81 637 }
jbe@81 638
jbe@81 639 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 640 return moonbr_io_write_impl(L, 1, 0);
jbe@80 641 }
jbe@80 642
jbe@80 643 static int moonbr_io_flush(lua_State *L) {
jbe@81 644 return moonbr_io_write_impl(L, 0, 1);
jbe@81 645 }
jbe@81 646
jbe@81 647 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 648 return moonbr_io_write_impl(L, 1, 1);
jbe@80 649 }
jbe@80 650
jbe@145 651 #if LUA_VERSION_NUM >= 503
jbe@145 652 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 653 #else
jbe@145 654 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 655 #endif
jbe@145 656 while (1) {
jbe@145 657 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 658 lua_pushvalue(L, 1);
jbe@145 659 lua_call(L, 1, 2);
jbe@145 660 if (lua_isnil(L, -2)) return 2;
jbe@145 661 if (!lua_tointeger(L, -2)) {
jbe@145 662 lua_pushvalue(L, 1);
jbe@145 663 return 1;
jbe@145 664 }
jbe@145 665 lua_pop(L, 2);
jbe@145 666 lua_pushvalue(L, 2);
jbe@152 667 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 668 }
jbe@145 669 }
jbe@145 670
jbe@145 671 static int moonbr_io_write_call(lua_State *L) {
jbe@145 672 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 673 lua_insert(L, 3);
jbe@145 674 lua_pushvalue(L, 1);
jbe@145 675 lua_insert(L, 4);
jbe@145 676 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 677 if (lua_isnil(L, -2)) return 2;
jbe@145 678 if (!lua_tointeger(L, -2)) {
jbe@145 679 lua_pushvalue(L, 1);
jbe@145 680 return 1;
jbe@145 681 }
jbe@145 682 #if LUA_VERSION_NUM >= 503
jbe@145 683 return moonbr_io_write_cont(L, 0, 0);
jbe@145 684 #else
jbe@145 685 return moonbr_io_write_cont(L);
jbe@145 686 #endif
jbe@145 687 }
jbe@145 688
jbe@145 689 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 690
jbe@145 691 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 692 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 693 lua_insert(L, 3);
jbe@145 694 lua_pushvalue(L, 1);
jbe@145 695 lua_insert(L, 4);
jbe@145 696 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 697 if (lua_isnil(L, -2)) return 2;
jbe@145 698 if (!lua_tointeger(L, -2)) {
jbe@145 699 lua_pushvalue(L, 1);
jbe@145 700 return 1;
jbe@145 701 }
jbe@145 702 #if LUA_VERSION_NUM >= 503
jbe@145 703 return moonbr_io_write_cont(L, 0, 0);
jbe@145 704 #else
jbe@145 705 return moonbr_io_write_cont(L);
jbe@145 706 #endif
jbe@145 707 }
jbe@145 708
jbe@145 709 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 710
jbe@88 711 static int moonbr_io_finish(lua_State *L) {
jbe@88 712 moonbr_io_handle_t *handle;
jbe@88 713 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 714 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 715 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 716 if (handle->writeleft) {
jbe@94 717 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 718 lua_pushvalue(L, 1);
jbe@116 719 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 720 handle->finished = 1;
jbe@116 721 lua_error(L);
jbe@116 722 }
jbe@94 723 if (!lua_toboolean(L, -2)) {
jbe@94 724 handle->finished = 1;
jbe@94 725 return 2;
jbe@88 726 }
jbe@94 727 }
jbe@94 728 handle->finished = 1;
jbe@260 729 #ifdef MOONBR_IO_USE_TLS
jbe@260 730 if ((handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) && !handle->tls) {
jbe@260 731 #else
jbe@107 732 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@260 733 #endif
jbe@257 734 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94 735 } else {
jbe@251 736 #ifdef MOONBR_IO_USE_TLS
jbe@260 737 if (handle->tls) {
jbe@260 738 int status;
jbe@260 739 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260 740 do status = tls_close(handle->tls);
jbe@260 741 while (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT);
jbe@260 742 if (status) {
jbe@260 743 close(handle->fd);
jbe@260 744 handle->fd = -1;
jbe@260 745 lua_pushnil(L);
jbe@260 746 lua_pushstring(L, tls_error(handle->tls));
jbe@260 747 return 2;
jbe@260 748 }
jbe@260 749 }
jbe@251 750 #endif
jbe@94 751 if (close(handle->fd)) {
jbe@94 752 handle->fd = -1;
jbe@257 753 moonbr_io_return_errmsg();
jbe@94 754 }
jbe@94 755 handle->fd = -1; /* fake EOF on read */
jbe@88 756 }
jbe@88 757 lua_pushboolean(L, 1);
jbe@88 758 return 1;
jbe@88 759 }
jbe@88 760
jbe@261 761 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83 762 moonbr_io_handle_t *handle;
jbe@83 763 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 764 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259 765 if (!reset && handle->fd >= 0) {
jbe@87 766 if (handle->writeleft) {
jbe@261 767 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87 768 lua_pushvalue(L, 1);
jbe@116 769 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 770 handle->closed = 1;
jbe@116 771 close(handle->fd);
jbe@116 772 handle->fd = -1;
jbe@116 773 lua_error(L);
jbe@116 774 }
jbe@261 775 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87 776 if (!lua_toboolean(L, -2)) {
jbe@87 777 close(handle->fd);
jbe@87 778 handle->fd = -1;
jbe@87 779 return 2;
jbe@87 780 }
jbe@261 781 #if LUA_VERSION_NUM >= 503
jbe@261 782 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261 783 #else
jbe@261 784 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261 785 #endif
jbe@261 786 lua_pushliteral(L, "flush");
jbe@261 787 lua_pushvalue(L, -3);
jbe@261 788 return 2;
jbe@261 789 }
jbe@129 790 } else {
jbe@129 791 handle->closed = 1;
jbe@83 792 }
jbe@260 793 #ifdef MOONBR_IO_USE_TLS
jbe@260 794 if (handle->tls) {
jbe@260 795 int status;
jbe@261 796 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260 797 do status = tls_close(handle->tls);
jbe@261 798 while (!nonblocking && (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT));
jbe@261 799 if (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT) {
jbe@261 800 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261 801 lua_pushliteral(L, "close");
jbe@261 802 return 1;
jbe@261 803 }
jbe@260 804 if (status) {
jbe@260 805 close(handle->fd);
jbe@260 806 handle->fd = -1;
jbe@260 807 lua_pushnil(L);
jbe@260 808 lua_pushstring(L, tls_error(handle->tls));
jbe@260 809 return 2;
jbe@260 810 }
jbe@260 811 }
jbe@260 812 #endif
jbe@256 813 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257 814 moonbr_io_prepare_errmsg();
jbe@256 815 close(handle->fd);
jbe@256 816 handle->fd = -1;
jbe@257 817 moonbr_io_return_prepared_errmsg();
jbe@256 818 }
jbe@129 819 } else {
jbe@129 820 handle->closed = 1;
jbe@83 821 }
jbe@94 822 if (handle->fd >= 0) {
jbe@94 823 if (close(handle->fd)) {
jbe@94 824 handle->fd = -1;
jbe@257 825 moonbr_io_return_errmsg();
jbe@94 826 }
jbe@104 827 handle->fd = -1;
jbe@83 828 }
jbe@83 829 lua_pushboolean(L, 1);
jbe@83 830 return 1;
jbe@84 831
jbe@83 832 }
jbe@83 833
jbe@94 834 static int moonbr_io_close(lua_State *L) {
jbe@261 835 return moonbr_io_close_impl(L, 0, 0);
jbe@94 836 }
jbe@94 837
jbe@84 838 static int moonbr_io_reset(lua_State *L) {
jbe@261 839 return moonbr_io_close_impl(L, 0, 1);
jbe@84 840 }
jbe@84 841
jbe@108 842 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 843 moonbr_io_handle_t *handle;
jbe@88 844 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 845 if (handle->fd >= 0) {
jbe@218 846 lua_pushcfunction(L, moonbr_io_reset);
jbe@88 847 lua_pushvalue(L, 1);
jbe@88 848 lua_pushinteger(L, 0);
jbe@88 849 lua_call(L, 2, 0);
jbe@88 850 }
jbe@246 851 #ifdef MOONBR_IO_USE_TLS
jbe@246 852 if (handle->tls) {
jbe@246 853 tls_free(handle->tls);
jbe@246 854 handle->tls = NULL;
jbe@246 855 }
jbe@246 856 if (handle->servertls) {
jbe@246 857 tls_free(handle->servertls);
jbe@246 858 handle->servertls = NULL;
jbe@246 859 }
jbe@246 860 #endif
jbe@88 861 return 0;
jbe@88 862 }
jbe@88 863
jbe@100 864 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 865 moonbr_io_handle_t *handle;
jbe@88 866 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 867 if (!handle->closed) {
jbe@100 868 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 869 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 870 lua_call(L, 1, 0);
jbe@88 871 }
jbe@88 872 }
jbe@88 873
jbe@208 874 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208 875 int *fd;
jbe@79 876 moonbr_io_handle_t *handle;
jbe@107 877 struct sockaddr addr;
jbe@107 878 socklen_t addrlen;
jbe@208 879 fd = lua_touserdata(L, 1);
jbe@79 880 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208 881 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107 882 addrlen = sizeof(addr);
jbe@208 883 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107 884 if (errno != ENOTSOCK) {
jbe@257 885 moonbr_io_prepare_errmsg();
jbe@107 886 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 887 }
jbe@107 888 handle->issock = 0;
jbe@107 889 } else {
jbe@107 890 handle->issock = 1;
jbe@107 891 handle->addrfam = addr.sa_family;
jbe@107 892 }
jbe@94 893 handle->finished = 0;
jbe@94 894 handle->closed = 0;
jbe@81 895 handle->nonblocking = -1;
jbe@95 896 handle->nopush = -1;
jbe@85 897 handle->readerr = 0;
jbe@105 898 handle->readbufin = 0;
jbe@105 899 handle->readbufout = 0;
jbe@81 900 handle->writeerr = 0;
jbe@81 901 handle->writeleft = 0;
jbe@132 902 handle->flushedleft = 0;
jbe@83 903 handle->writeqin = 0;
jbe@83 904 handle->writeqout = 0;
jbe@81 905 handle->writeqoff = 0;
jbe@103 906 handle->writebufin = 0;
jbe@103 907 handle->writebufout = 0;
jbe@246 908 #ifdef MOONBR_IO_USE_TLS
jbe@246 909 handle->tls = NULL;
jbe@246 910 handle->servertls = NULL;
jbe@250 911 handle->tlshandshake = 0;
jbe@261 912 handle->tlsclosing = 0;
jbe@246 913 #endif
jbe@208 914 handle->fd = *fd; /* required for set_linger call */
jbe@256 915 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257 916 moonbr_io_prepare_errmsg();
jbe@256 917 handle->fd = -1;
jbe@256 918 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256 919 }
jbe@208 920 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238 921 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 922 lua_newtable(L); // uservalue
jbe@81 923 lua_newtable(L);
jbe@103 924 lua_setfield(L, -2, "writequeue");
jbe@79 925 lua_newtable(L); // public
jbe@107 926 if (handle->addrfam == AF_INET6) {
jbe@107 927 struct sockaddr_in6 addr_in6;
jbe@107 928 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 929 const char *addrstr;
jbe@107 930 addrlen = sizeof(addr_in6);
jbe@208 931 if (getsockname(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 932 moonbr_io_prepare_errmsg();
jbe@107 933 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 934 }
jbe@107 935 if (addrlen > sizeof(addr_in6)) {
jbe@107 936 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 937 }
jbe@107 938 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 939 if (!addrstr) {
jbe@257 940 moonbr_io_prepare_errmsg();
jbe@107 941 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 942 } else {
jbe@107 943 lua_pushstring(L, addrstr);
jbe@107 944 lua_setfield(L, -2, "local_ip6");
jbe@107 945 }
jbe@107 946 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 947 lua_setfield(L, -2, "local_tcpport");
jbe@208 948 if (getpeername(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 949 moonbr_io_prepare_errmsg();
jbe@107 950 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 951 }
jbe@107 952 if (addrlen > sizeof(addr_in6)) {
jbe@107 953 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 954 }
jbe@107 955 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 956 if (!addrstr) {
jbe@257 957 moonbr_io_prepare_errmsg();
jbe@107 958 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 959 } else {
jbe@107 960 lua_pushstring(L, addrstr);
jbe@107 961 lua_setfield(L, -2, "remote_ip6");
jbe@107 962 }
jbe@107 963 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 964 lua_setfield(L, -2, "remote_tcpport");
jbe@107 965 } else if (handle->addrfam == AF_INET) {
jbe@107 966 struct sockaddr_in addr_in;
jbe@107 967 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 968 const char *addrstr;
jbe@107 969 addrlen = sizeof(addr_in);
jbe@208 970 if (getsockname(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 971 moonbr_io_prepare_errmsg();
jbe@107 972 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 973 }
jbe@107 974 if (addrlen > sizeof(addr_in)) {
jbe@107 975 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 976 }
jbe@107 977 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 978 if (!addrstr) {
jbe@257 979 moonbr_io_prepare_errmsg();
jbe@107 980 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 981 } else {
jbe@107 982 lua_pushstring(L, addrstr);
jbe@107 983 lua_setfield(L, -2, "local_ip4");
jbe@107 984 }
jbe@107 985 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 986 lua_setfield(L, -2, "local_tcpport");
jbe@208 987 if (getpeername(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 988 moonbr_io_prepare_errmsg();
jbe@107 989 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 990 }
jbe@107 991 if (addrlen > sizeof(addr_in)) {
jbe@107 992 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 993 }
jbe@107 994 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 995 if (!addrstr) {
jbe@257 996 moonbr_io_prepare_errmsg();
jbe@107 997 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 998 } else {
jbe@107 999 lua_pushstring(L, addrstr);
jbe@107 1000 lua_setfield(L, -2, "remote_ip4");
jbe@107 1001 }
jbe@107 1002 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 1003 lua_setfield(L, -2, "remote_tcpport");
jbe@107 1004 }
jbe@238 1005 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1006 lua_setfield(L, -2, "public");
jbe@79 1007 lua_setuservalue(L, -2);
jbe@208 1008 handle->fd = *fd;
jbe@208 1009 *fd = -1; /* closing is now handled by garbage collection */
jbe@208 1010 return 1;
jbe@208 1011 }
jbe@208 1012
jbe@208 1013 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208 1014 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1015 lua_pushlightuserdata(L, &fd);
jbe@208 1016 if (lua_pcall(L, 1, 1, 0)) {
jbe@251 1017 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208 1018 lua_error(L);
jbe@208 1019 }
jbe@79 1020 }
jbe@79 1021
jbe@79 1022 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 1023 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1024 luaL_checkany(L, 2);
jbe@79 1025 lua_getuservalue(L, 1);
jbe@79 1026 lua_getfield(L, -1, "public");
jbe@79 1027 lua_pushvalue(L, 2);
jbe@79 1028 lua_gettable(L, -2);
jbe@79 1029 return 1;
jbe@79 1030 }
jbe@79 1031
jbe@79 1032 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 1033 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1034 luaL_checkany(L, 2);
jbe@205 1035 luaL_checkany(L, 3);
jbe@79 1036 lua_getuservalue(L, 1);
jbe@79 1037 lua_getfield(L, -1, "public");
jbe@79 1038 lua_pushvalue(L, 2);
jbe@79 1039 lua_pushvalue(L, 3);
jbe@79 1040 lua_settable(L, -3);
jbe@79 1041 return 0;
jbe@79 1042 }
jbe@79 1043
jbe@111 1044 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 1045 const char *path;
jbe@111 1046 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 1047 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 1048 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 1049 ) - 1; /* one byte for termination */
jbe@111 1050 int sock;
jbe@111 1051 path = luaL_checkstring(L, 1);
jbe@111 1052 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 1053 strcpy(sockaddr.sun_path, path);
jbe@111 1054 sock = socket(
jbe@111 1055 PF_LOCAL,
jbe@111 1056 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 1057 0
jbe@111 1058 );
jbe@257 1059 if (sock < 0) moonbr_io_return_errmsg();
jbe@111 1060 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 1061 if (!nonblocking && errno == EINTR) {
jbe@257 1062 moonbr_io_prepare_errmsg();
jbe@111 1063 close(sock);
jbe@257 1064 moonbr_io_return_prepared_errmsg();
jbe@257 1065 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@111 1066 }
jbe@111 1067 moonbr_io_pushhandle(L, sock);
jbe@111 1068 return 1;
jbe@111 1069 }
jbe@111 1070
jbe@111 1071 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 1072 return moonbr_io_localconnect_impl(L, 0);
jbe@111 1073 }
jbe@111 1074
jbe@111 1075 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 1076 return moonbr_io_localconnect_impl(L, 1);
jbe@111 1077 }
jbe@111 1078
jbe@99 1079 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 1080 const char *host, *port;
jbe@98 1081 struct addrinfo hints = { 0, };
jbe@98 1082 struct addrinfo *res, *addrinfo;
jbe@98 1083 int errcode;
jbe@98 1084 int sock;
jbe@98 1085 host = luaL_checkstring(L, 1);
jbe@98 1086 port = luaL_checkstring(L, 2);
jbe@98 1087 hints.ai_family = AF_UNSPEC;
jbe@98 1088 hints.ai_socktype = SOCK_STREAM;
jbe@98 1089 hints.ai_protocol = IPPROTO_TCP;
jbe@98 1090 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 1091 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 1092 if (errcode) {
jbe@102 1093 freeaddrinfo(res);
jbe@98 1094 if (errcode == EAI_SYSTEM) {
jbe@257 1095 moonbr_io_prepare_errmsg();
jbe@98 1096 lua_pushnil(L);
jbe@98 1097 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 1098 } else {
jbe@98 1099 lua_pushnil(L);
jbe@98 1100 lua_pushstring(L, gai_strerror(errcode));
jbe@98 1101 }
jbe@98 1102 return 2;
jbe@98 1103 }
jbe@98 1104 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1105 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 1106 }
jbe@98 1107 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1108 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 1109 }
jbe@98 1110 addrinfo = res;
jbe@98 1111 moonbr_io_tcpconnect_found:
jbe@99 1112 sock = socket(
jbe@134 1113 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 1114 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 1115 addrinfo->ai_protocol
jbe@99 1116 );
jbe@98 1117 if (sock < 0) {
jbe@257 1118 moonbr_io_prepare_errmsg();
jbe@108 1119 freeaddrinfo(res);
jbe@257 1120 moonbr_io_return_prepared_errmsg();
jbe@98 1121 }
jbe@98 1122 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1123 freeaddrinfo(res);
jbe@99 1124 if (!nonblocking && errno == EINTR) {
jbe@257 1125 moonbr_io_prepare_errmsg();
jbe@99 1126 close(sock);
jbe@257 1127 moonbr_io_return_prepared_errmsg();
jbe@257 1128 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@108 1129 } else {
jbe@108 1130 freeaddrinfo(res);
jbe@98 1131 }
jbe@107 1132 moonbr_io_pushhandle(L, sock);
jbe@98 1133 return 1;
jbe@98 1134 }
jbe@98 1135
jbe@99 1136 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1137 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1138 }
jbe@99 1139
jbe@99 1140 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1141 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1142 }
jbe@99 1143
jbe@112 1144 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1145 moonbr_io_listener_t *listener;
jbe@112 1146 const char *path;
jbe@118 1147 struct stat sb;
jbe@112 1148 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1149 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1150 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1151 ) - 1; /* one byte for termination */
jbe@112 1152 int sock;
jbe@112 1153 path = luaL_checkstring(L, 1);
jbe@112 1154 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1155 strcpy(sockaddr.sun_path, path);
jbe@118 1156 if (stat(path, &sb) == 0) {
jbe@118 1157 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1158 }
jbe@112 1159 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1160 listener->fd = -1;
jbe@112 1161 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1162 sock = socket(
jbe@112 1163 PF_LOCAL,
jbe@112 1164 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1165 0
jbe@112 1166 );
jbe@257 1167 if (sock < 0) moonbr_io_return_errmsg();
jbe@112 1168 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257 1169 moonbr_io_prepare_errmsg();
jbe@112 1170 close(sock);
jbe@257 1171 moonbr_io_return_prepared_errmsg();
jbe@112 1172 }
jbe@112 1173 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1174 moonbr_io_prepare_errmsg();
jbe@112 1175 close(sock);
jbe@257 1176 moonbr_io_return_prepared_errmsg();
jbe@112 1177 }
jbe@112 1178 listener->fd = sock;
jbe@118 1179 listener->addrfam = AF_LOCAL;
jbe@112 1180 listener->nonblocking = -1;
jbe@112 1181 return 1;
jbe@112 1182 }
jbe@112 1183
jbe@108 1184 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1185 moonbr_io_listener_t *listener;
jbe@108 1186 const char *host, *port;
jbe@108 1187 struct addrinfo hints = { 0, };
jbe@108 1188 struct addrinfo *res, *addrinfo;
jbe@108 1189 int errcode;
jbe@108 1190 int sock;
jbe@108 1191 host = luaL_optstring(L, 1, NULL);
jbe@108 1192 port = luaL_checkstring(L, 2);
jbe@108 1193 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1194 listener->fd = -1;
jbe@108 1195 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1196 hints.ai_family = AF_UNSPEC;
jbe@108 1197 hints.ai_socktype = SOCK_STREAM;
jbe@108 1198 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1199 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1200 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1201 if (errcode) {
jbe@108 1202 freeaddrinfo(res);
jbe@108 1203 if (errcode == EAI_SYSTEM) {
jbe@257 1204 moonbr_io_prepare_errmsg();
jbe@108 1205 lua_pushnil(L);
jbe@108 1206 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1207 } else {
jbe@108 1208 lua_pushnil(L);
jbe@108 1209 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1210 }
jbe@108 1211 return 2;
jbe@108 1212 }
jbe@108 1213 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1214 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1215 }
jbe@108 1216 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1217 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1218 }
jbe@108 1219 addrinfo = res;
jbe@108 1220 moonbr_io_tcpconnect_found:
jbe@118 1221 listener->addrfam = addrinfo->ai_family;
jbe@108 1222 sock = socket(
jbe@134 1223 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1224 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1225 addrinfo->ai_protocol
jbe@108 1226 );
jbe@108 1227 if (sock < 0) {
jbe@257 1228 moonbr_io_prepare_errmsg();
jbe@108 1229 freeaddrinfo(res);
jbe@257 1230 moonbr_io_return_prepared_errmsg();
jbe@108 1231 }
jbe@120 1232 {
jbe@120 1233 static const int reuseval = 1;
jbe@120 1234 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257 1235 moonbr_io_prepare_errmsg();
jbe@120 1236 freeaddrinfo(res);
jbe@120 1237 close(sock);
jbe@120 1238 lua_pushnil(L);
jbe@120 1239 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1240 return 2;
jbe@120 1241 }
jbe@120 1242 }
jbe@108 1243 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257 1244 moonbr_io_prepare_errmsg();
jbe@108 1245 freeaddrinfo(res);
jbe@108 1246 close(sock);
jbe@257 1247 moonbr_io_return_prepared_errmsg();
jbe@108 1248 }
jbe@108 1249 freeaddrinfo(res);
jbe@108 1250 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1251 moonbr_io_prepare_errmsg();
jbe@108 1252 close(sock);
jbe@257 1253 moonbr_io_return_prepared_errmsg();
jbe@108 1254 }
jbe@108 1255 listener->fd = sock;
jbe@108 1256 listener->nonblocking = -1;
jbe@108 1257 return 1;
jbe@108 1258 }
jbe@108 1259
jbe@108 1260 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1261 moonbr_io_listener_t *listener;
jbe@108 1262 int fd;
jbe@108 1263 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1264 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1265 if (listener->nonblocking != nonblocking) {
jbe@108 1266 int flags;
jbe@108 1267 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1268 if (flags == -1) {
jbe@257 1269 moonbr_io_prepare_errmsg();
jbe@108 1270 close(listener->fd);
jbe@108 1271 listener->fd = -1;
jbe@108 1272 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1273 }
jbe@108 1274 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1275 else flags &= ~O_NONBLOCK;
jbe@108 1276 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257 1277 moonbr_io_prepare_errmsg();
jbe@108 1278 close(listener->fd);
jbe@108 1279 listener->fd = -1;
jbe@108 1280 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1281 }
jbe@108 1282 listener->nonblocking = nonblocking;
jbe@108 1283 }
jbe@108 1284 while (1) {
jbe@214 1285 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215 1286 fd = accept(listener->fd, NULL, NULL);
jbe@214 1287 if (fd != -1) {
jbe@214 1288 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257 1289 moonbr_io_prepare_errmsg();
jbe@214 1290 close(listener->fd);
jbe@214 1291 listener->fd = -1;
jbe@214 1292 close(fd);
jbe@214 1293 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214 1294 }
jbe@214 1295 }
jbe@214 1296 #else
jbe@108 1297 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214 1298 #endif
jbe@108 1299 if (fd < 0) {
jbe@108 1300 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1301 lua_pushboolean(L, 0);
jbe@108 1302 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1303 return 2;
jbe@257 1304 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108 1305 } else {
jbe@108 1306 moonbr_io_pushhandle(L, fd);
jbe@108 1307 return 1;
jbe@108 1308 }
jbe@108 1309 }
jbe@108 1310 }
jbe@108 1311
jbe@108 1312 static int moonbr_io_accept(lua_State *L) {
jbe@108 1313 return moonbr_io_accept_impl(L, 0);
jbe@108 1314 }
jbe@108 1315
jbe@108 1316 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1317 return moonbr_io_accept_impl(L, 1);
jbe@108 1318 }
jbe@108 1319
jbe@108 1320 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1321 moonbr_io_listener_t *listener;
jbe@118 1322 struct sockaddr_un addr;
jbe@118 1323 socklen_t addrlen;
jbe@118 1324 struct stat sb;
jbe@108 1325 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1326 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1327 addrlen = sizeof(addr);
jbe@118 1328 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1329 if (close(listener->fd)) {
jbe@257 1330 moonbr_io_prepare_errmsg();
jbe@108 1331 listener->fd = -1;
jbe@118 1332 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1333 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1334 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1335 }
jbe@118 1336 }
jbe@257 1337 moonbr_io_return_prepared_errmsg();
jbe@108 1338 }
jbe@108 1339 listener->fd = -1;
jbe@118 1340 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1341 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1342 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1343 }
jbe@118 1344 }
jbe@108 1345 lua_pushboolean(L, 1);
jbe@108 1346 return 1;
jbe@108 1347 }
jbe@108 1348
jbe@108 1349 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1350 moonbr_io_listener_t *listener;
jbe@108 1351 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1352 if (listener->fd >= 0) close(listener->fd);
jbe@108 1353 listener->fd = -1;
jbe@108 1354 return 0;
jbe@108 1355 }
jbe@108 1356
jbe@205 1357 static int moonbr_io_exec(lua_State *L) {
jbe@205 1358 char **argv;
jbe@205 1359 int i, argc;
jbe@205 1360 int sockin[2], sockout[2], sockerr[2];
jbe@205 1361 volatile int errorcond = 0;
jbe@213 1362 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205 1363 moonbr_io_child_t *child;
jbe@205 1364 argc = lua_gettop(L);
jbe@205 1365 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205 1366 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205 1367 argv[argc] = NULL;
jbe@208 1368 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208 1369 child->pid = 0;
jbe@208 1370 lua_newtable(L);
jbe@208 1371 lua_setuservalue(L, -2);
jbe@238 1372 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206 1373 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockin)) {
jbe@257 1374 moonbr_io_prepare_errmsg();
jbe@205 1375 lua_pushnil(L);
jbe@205 1376 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1377 return 2;
jbe@205 1378 }
jbe@206 1379 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockout)) {
jbe@257 1380 moonbr_io_prepare_errmsg();
jbe@205 1381 close(sockin[0]);
jbe@205 1382 close(sockin[1]);
jbe@205 1383 lua_pushnil(L);
jbe@205 1384 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1385 return 2;
jbe@205 1386 }
jbe@206 1387 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockerr)) {
jbe@257 1388 moonbr_io_prepare_errmsg();
jbe@205 1389 close(sockin[0]);
jbe@205 1390 close(sockin[1]);
jbe@205 1391 close(sockout[0]);
jbe@205 1392 close(sockout[1]);
jbe@205 1393 lua_pushnil(L);
jbe@205 1394 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1395 return 2;
jbe@205 1396 }
jbe@205 1397 child->pid = vfork();
jbe@205 1398 if (child->pid == -1) {
jbe@257 1399 moonbr_io_prepare_errmsg();
jbe@205 1400 close(sockin[0]);
jbe@205 1401 close(sockin[1]);
jbe@205 1402 close(sockout[0]);
jbe@205 1403 close(sockout[1]);
jbe@205 1404 close(sockerr[0]);
jbe@205 1405 close(sockerr[1]);
jbe@205 1406 lua_pushnil(L);
jbe@205 1407 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205 1408 return 2;
jbe@205 1409 }
jbe@205 1410 if (!child->pid) {
jbe@208 1411 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1412 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208 1413 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232 1414 closefrom(3);
jbe@208 1415 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1416 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1417 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205 1418 if (execvp(argv[0], argv)) {
jbe@205 1419 errorcond = 2;
jbe@205 1420 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205 1421 _exit(0);
jbe@205 1422 }
jbe@208 1423 moonbr_io_exec_error1:
jbe@206 1424 errorcond = 1;
jbe@206 1425 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206 1426 _exit(0);
jbe@205 1427 }
jbe@205 1428 close(sockin[1]);
jbe@205 1429 close(sockout[1]);
jbe@205 1430 close(sockerr[1]);
jbe@205 1431 if (errorcond) {
jbe@205 1432 int status;
jbe@205 1433 close(sockin[0]);
jbe@205 1434 close(sockout[0]);
jbe@205 1435 close(sockerr[0]);
jbe@205 1436 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1437 if (errno != EINTR) {
jbe@257 1438 moonbr_io_prepare_errmsg();
jbe@205 1439 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205 1440 }
jbe@205 1441 }
jbe@208 1442 child->pid = 0;
jbe@205 1443 lua_pushnil(L);
jbe@205 1444 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205 1445 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205 1446 return 2;
jbe@205 1447 }
jbe@208 1448 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1449 lua_pushlightuserdata(L, &sockin[0]);
jbe@208 1450 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1451 if (sockin[0] != -1) close(sockin[0]);
jbe@208 1452 close(sockout[0]);
jbe@208 1453 close(sockerr[0]);
jbe@208 1454 goto moonbr_io_exec_error2;
jbe@208 1455 }
jbe@205 1456 lua_setfield(L, -2, "stdin");
jbe@208 1457 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1458 lua_pushlightuserdata(L, &sockout[0]);
jbe@208 1459 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1460 if (sockout[0] != -1) close(sockout[0]);
jbe@208 1461 close(sockerr[0]);
jbe@208 1462 goto moonbr_io_exec_error2;
jbe@208 1463 }
jbe@205 1464 lua_setfield(L, -2, "stdout");
jbe@208 1465 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1466 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208 1467 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1468 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208 1469 goto moonbr_io_exec_error2;
jbe@208 1470 }
jbe@205 1471 lua_setfield(L, -2, "stderr");
jbe@205 1472 return 1;
jbe@208 1473 moonbr_io_exec_error2:
jbe@208 1474 {
jbe@208 1475 int status;
jbe@208 1476 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208 1477 if (errno != EINTR) {
jbe@257 1478 moonbr_io_prepare_errmsg();
jbe@208 1479 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208 1480 }
jbe@208 1481 }
jbe@208 1482 }
jbe@208 1483 child->pid = 0;
jbe@208 1484 return lua_error(L);
jbe@205 1485 }
jbe@205 1486
jbe@205 1487 static int moonbr_io_childindex(lua_State *L) {
jbe@205 1488 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1489 luaL_checkany(L, 2);
jbe@205 1490 lua_getuservalue(L, 1);
jbe@205 1491 lua_pushvalue(L, 2);
jbe@205 1492 lua_gettable(L, -2);
jbe@205 1493 if (lua_isnil(L, -1)) {
jbe@205 1494 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 1495 lua_pushvalue(L, 2);
jbe@205 1496 lua_gettable(L, -2);
jbe@205 1497 }
jbe@205 1498 return 1;
jbe@205 1499 }
jbe@205 1500
jbe@205 1501 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205 1502 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1503 luaL_checkany(L, 2);
jbe@205 1504 luaL_checkany(L, 3);
jbe@205 1505 lua_getuservalue(L, 1);
jbe@205 1506 lua_pushvalue(L, 2);
jbe@205 1507 lua_pushvalue(L, 3);
jbe@205 1508 lua_settable(L, -3);
jbe@205 1509 return 0;
jbe@205 1510 }
jbe@205 1511
jbe@205 1512 static int moonbr_io_childgc(lua_State *L) {
jbe@205 1513 moonbr_io_child_t *child;
jbe@205 1514 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1515 if (child->pid) {
jbe@205 1516 int status;
jbe@281 1517 int pid = child->pid;
jbe@281 1518 child->pid = 0;
jbe@281 1519 if (kill(pid, SIGKILL)) {
jbe@257 1520 moonbr_io_prepare_errmsg();
jbe@205 1521 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205 1522 }
jbe@281 1523 while (waitpid(pid, &status, 0) == -1) {
jbe@205 1524 if (errno != EINTR) {
jbe@257 1525 moonbr_io_prepare_errmsg();
jbe@205 1526 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205 1527 }
jbe@205 1528 }
jbe@205 1529 }
jbe@205 1530 return 0;
jbe@205 1531 }
jbe@205 1532
jbe@205 1533 static int moonbr_io_kill(lua_State *L) {
jbe@205 1534 moonbr_io_child_t *child;
jbe@205 1535 int sig;
jbe@205 1536 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@285 1537 sig = luaL_optinteger(L, 2, SIGKILL);
jbe@205 1538 if (!child->pid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@205 1539 if (kill(child->pid, sig)) {
jbe@257 1540 moonbr_io_prepare_errmsg();
jbe@205 1541 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@205 1542 }
jbe@205 1543 lua_settop(L, 1);
jbe@205 1544 return 1;
jbe@205 1545 }
jbe@205 1546
jbe@205 1547 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205 1548 moonbr_io_child_t *child;
jbe@205 1549 pid_t waitedpid;
jbe@205 1550 int status;
jbe@205 1551 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1552 if (!child->pid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@205 1553 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@205 1554 if (errno != EINTR) {
jbe@257 1555 moonbr_io_prepare_errmsg();
jbe@205 1556 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@205 1557 }
jbe@205 1558 }
jbe@205 1559 if (!waitedpid) {
jbe@219 1560 lua_pushboolean(L, 0);
jbe@219 1561 lua_pushliteral(L, "Process is still running");
jbe@219 1562 return 2;
jbe@205 1563 } else {
jbe@205 1564 child->pid = 0;
jbe@205 1565 if (WIFEXITED(status)) {
jbe@205 1566 lua_pushinteger(L, WEXITSTATUS(status));
jbe@205 1567 } else if (WIFSIGNALED(status)) {
jbe@205 1568 lua_pushinteger(L, -WTERMSIG(status));
jbe@205 1569 } else {
jbe@205 1570 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205 1571 }
jbe@219 1572 return 1;
jbe@205 1573 }
jbe@205 1574 }
jbe@205 1575
jbe@205 1576 static int moonbr_io_wait(lua_State *L) {
jbe@205 1577 return moonbr_io_wait_impl(L, 0);
jbe@205 1578 }
jbe@205 1579
jbe@205 1580 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205 1581 return moonbr_io_wait_impl(L, 1);
jbe@205 1582 }
jbe@205 1583
jbe@205 1584 #if LUA_VERSION_NUM >= 503
jbe@205 1585 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205 1586 #else
jbe@205 1587 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205 1588 #endif
jbe@205 1589 #if !(LUA_VERSION_NUM >= 503)
jbe@205 1590 int ctx = 0;
jbe@205 1591 lua_getctx(L, &ctx);
jbe@205 1592 #endif
jbe@205 1593 while (1) {
jbe@205 1594 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205 1595 lua_pushvalue(L, 1);
jbe@205 1596 lua_call(L, 1, 1);
jbe@205 1597 if (!lua_isnil(L, -1)) break;
jbe@205 1598 lua_pushvalue(L, 2);
jbe@205 1599 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@205 1600 }
jbe@205 1601 return 1;
jbe@205 1602 }
jbe@205 1603
jbe@205 1604 static int moonbr_io_wait_call(lua_State *L) {
jbe@205 1605 lua_settop(L, 2);
jbe@205 1606 #if LUA_VERSION_NUM >= 503
jbe@205 1607 return moonbr_io_wait_cont(L, 0, 0);
jbe@205 1608 #else
jbe@205 1609 return moonbr_io_wait_cont(L);
jbe@205 1610 #endif
jbe@205 1611 }
jbe@205 1612
jbe@205 1613 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205 1614
jbe@284 1615 static void moonbr_io_sigterm_handler(int sig) {
jbe@284 1616 moonbr_io_sigterm_flag = 1;
jbe@266 1617 }
jbe@266 1618
jbe@297 1619 static void moonbr_io_sigchld_handler(int sig) {
jbe@297 1620 moonbr_io_sigchld_flag = 1;
jbe@297 1621 }
jbe@297 1622
jbe@288 1623 int moonbr_io_catch_sigterm(lua_State *L) {
jbe@284 1624 signal(SIGTERM, moonbr_io_sigterm_handler);
jbe@284 1625 return 0;
jbe@284 1626 }
jbe@284 1627
jbe@266 1628 static int moonbr_io_getpid(lua_State *L) {
jbe@266 1629 lua_pushinteger(L, getpid());
jbe@266 1630 return 1;
jbe@266 1631 }
jbe@266 1632
jbe@250 1633 #ifdef MOONBR_IO_USE_TLS
jbe@258 1634
jbe@250 1635 #define moonbr_io_poll_tls() \
jbe@250 1636 if (!handle->tlshandshake) { \
jbe@295 1637 force_wakeup = 1; \
jbe@295 1638 continue; \
jbe@250 1639 } \
jbe@250 1640 if (handle->tlshandshake == TLS_WANT_POLLIN) { \
jbe@250 1641 if (fd < 0) { \
jbe@295 1642 force_wakeup = 1; \
jbe@295 1643 continue; \
jbe@250 1644 } \
jbe@250 1645 FD_SET(fd, &readfds); \
jbe@250 1646 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1647 continue; \
jbe@250 1648 } \
jbe@250 1649 if (handle->tlshandshake == TLS_WANT_POLLOUT) { \
jbe@250 1650 if (fd < 0) { \
jbe@295 1651 force_wakeup = 1; \
jbe@295 1652 continue; \
jbe@250 1653 } \
jbe@250 1654 FD_SET(fd, &writefds); \
jbe@250 1655 if (fd+1 > nfds) nfds = fd+1; \
jbe@250 1656 continue; \
jbe@250 1657 } \
jbe@250 1658 while (0)
jbe@258 1659
jbe@258 1660 #endif /* MOONBR_IO_USE_TLS */
jbe@250 1661
jbe@106 1662 static int moonbr_io_poll(lua_State *L) {
jbe@106 1663 moonbr_io_handle_t *handle;
jbe@108 1664 moonbr_io_listener_t *listener;
jbe@296 1665 moonbr_io_child_t *child;
jbe@106 1666 int fd, isnum;
jbe@106 1667 int nfds = 0;
jbe@106 1668 fd_set readfds, writefds, exceptfds;
jbe@284 1669 struct timespec timeout = {0, };
jbe@295 1670 int force_wakeup = 0;
jbe@288 1671 int use_timeout = 0; // negative for negative timeout
jbe@284 1672 int check_sigterm = 0;
jbe@297 1673 int check_sigchld = 0;
jbe@296 1674 int childstatus;
jbe@284 1675 sigset_t mask, orig_mask;
jbe@106 1676 int status;
jbe@106 1677 FD_ZERO(&readfds);
jbe@106 1678 FD_ZERO(&writefds);
jbe@106 1679 FD_ZERO(&exceptfds);
jbe@106 1680 if (!lua_isnoneornil(L, 1)) {
jbe@106 1681 luaL_checktype(L, 1, LUA_TTABLE);
jbe@106 1682 for (lua_pushnil(L); lua_next(L, 1); lua_pop(L, 1)) {
jbe@106 1683 if (lua_toboolean(L, -1)) {
jbe@106 1684 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1685 if (handle) {
jbe@109 1686 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@106 1687 fd = handle->fd;
jbe@247 1688 #if MOONBR_IO_USE_TLS
jbe@250 1689 moonbr_io_poll_tls();
jbe@247 1690 #endif
jbe@122 1691 if (
jbe@122 1692 fd < 0 || /* fake EOF to simulate shutdown if fd < 0 */
jbe@122 1693 handle->readbufin != handle->readbufout /* data pending in buffer */
jbe@122 1694 ) {
jbe@295 1695 force_wakeup = 1;
jbe@295 1696 continue;
jbe@109 1697 }
jbe@106 1698 } else {
jbe@108 1699 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1700 if (listener) {
jbe@108 1701 fd = listener->fd;
jbe@108 1702 if (fd < 0) luaL_error(L, "Attempt to poll a closed listener");
jbe@108 1703 } else {
jbe@296 1704 child = luaL_testudata(L, -2, MOONBR_IO_CHILD_MT_REGKEY);
jbe@296 1705 if (child) {
jbe@297 1706 if (!check_sigchld) {
jbe@297 1707 check_sigchld = 1;
jbe@297 1708 moonbr_io_sigchld_flag = 0;
jbe@297 1709 signal(SIGCHLD, moonbr_io_sigchld_handler);
jbe@297 1710 }
jbe@296 1711 if (waitpid(child->pid, &childstatus, WNOHANG|WNOWAIT) != -1) {
jbe@296 1712 force_wakeup = 1;
jbe@296 1713 } else if (errno != ECHILD && errno != EINTR) {
jbe@296 1714 moonbr_io_prepare_errmsg();
jbe@296 1715 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@296 1716 }
jbe@296 1717 continue;
jbe@296 1718 } else {
jbe@296 1719 fd = lua_tointegerx(L, -2, &isnum);
jbe@296 1720 if (!isnum) luaL_error(L, "Expected integer (file descriptor), I/O handle, or listener in table key");
jbe@296 1721 }
jbe@108 1722 }
jbe@106 1723 }
jbe@138 1724 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1725 FD_SET(fd, &readfds);
jbe@106 1726 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1727 }
jbe@106 1728 }
jbe@106 1729 }
jbe@106 1730 if (!lua_isnoneornil(L, 2)) {
jbe@106 1731 luaL_checktype(L, 2, LUA_TTABLE);
jbe@106 1732 for (lua_pushnil(L); lua_next(L, 2); lua_pop(L, 1)) {
jbe@106 1733 if (lua_toboolean(L, -1)) {
jbe@106 1734 handle = luaL_testudata(L, -2, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@106 1735 if (handle) {
jbe@109 1736 if (handle->closed) luaL_error(L, "Attempt to poll a closed connection");
jbe@109 1737 if (handle->finished) luaL_error(L, "Attempt to write-poll a finished connection");
jbe@106 1738 fd = handle->fd;
jbe@247 1739 #if MOONBR_IO_USE_TLS
jbe@250 1740 moonbr_io_poll_tls();
jbe@247 1741 #endif
jbe@106 1742 } else {
jbe@108 1743 listener = luaL_testudata(L, -2, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@109 1744 if (listener) luaL_error(L, "Attempt to write-poll a listener");
jbe@109 1745 fd = lua_tointegerx(L, -2, &isnum);
jbe@109 1746 if (!isnum) luaL_error(L, "Expected integer (file descriptor) or I/O handle in table key");
jbe@106 1747 }
jbe@138 1748 if (fd < 0 || fd >= FD_SETSIZE) luaL_error(L, "File descriptor out of valid range");
jbe@106 1749 FD_SET(fd, &writefds);
jbe@106 1750 if (fd+1 > nfds) nfds = fd+1;
jbe@106 1751 }
jbe@106 1752 }
jbe@106 1753 }
jbe@106 1754 if (!lua_isnoneornil(L, 3)) {
jbe@106 1755 lua_Number n;
jbe@106 1756 n = lua_tonumberx(L, 3, &isnum);
jbe@146 1757 if (isnum && n<0) {
jbe@288 1758 use_timeout = -1;
jbe@146 1759 } else if (isnum && n>=0 && n<100000000) {
jbe@288 1760 use_timeout = 1;
jbe@106 1761 timeout.tv_sec = n;
jbe@284 1762 timeout.tv_nsec = 1e9 * (n - timeout.tv_sec);
jbe@106 1763 } else {
jbe@106 1764 luaL_argcheck(L, 0, 3, "not a valid timeout");
jbe@106 1765 }
jbe@284 1766 }
jbe@295 1767 if (use_timeout < 0) force_wakeup = 1;
jbe@284 1768 if (!lua_isnoneornil(L, 4)) luaL_checktype(L, 4, LUA_TBOOLEAN);
jbe@284 1769 check_sigterm = lua_toboolean(L, 4);
jbe@297 1770 if ((check_sigterm || check_sigchld) && !force_wakeup) {
jbe@296 1771 sigemptyset(&mask);
jbe@296 1772 if (check_sigterm) sigaddset(&mask, SIGTERM);
jbe@297 1773 if (check_sigchld) sigaddset(&mask, SIGCHLD);
jbe@296 1774 if (sigprocmask(SIG_BLOCK, &mask, &orig_mask)) abort();
jbe@296 1775 }
jbe@296 1776 if (check_sigterm && moonbr_io_sigterm_flag) {
jbe@295 1777 if (!force_wakeup) {
jbe@296 1778 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@295 1779 }
jbe@296 1780 lua_pushboolean(L, 0);
jbe@296 1781 lua_pushliteral(L, "SIGTERM received");
jbe@296 1782 lua_pushboolean(L, 1);
jbe@296 1783 return 3;
jbe@296 1784 }
jbe@297 1785 if (check_sigchld && !force_wakeup && moonbr_io_sigchld_flag) {
jbe@297 1786 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@297 1787 force_wakeup = 1;
jbe@288 1788 }
jbe@288 1789 if (use_timeout < 0) {
jbe@288 1790 lua_pushboolean(L, 0);
jbe@290 1791 lua_pushliteral(L, "Timeout");
jbe@288 1792 if (check_sigterm) {
jbe@288 1793 lua_pushboolean(L, 0);
jbe@288 1794 return 3;
jbe@288 1795 } else {
jbe@284 1796 return 2;
jbe@284 1797 }
jbe@284 1798 }
jbe@295 1799 if (!force_wakeup) {
jbe@295 1800 status = pselect(
jbe@295 1801 nfds, &readfds, &writefds, &exceptfds,
jbe@295 1802 use_timeout ? &timeout : NULL,
jbe@295 1803 check_sigterm ? &orig_mask : NULL
jbe@295 1804 );
jbe@295 1805 if (check_sigterm) {
jbe@295 1806 if (sigprocmask(SIG_SETMASK, &orig_mask, NULL)) abort();
jbe@295 1807 if (moonbr_io_sigterm_flag) {
jbe@295 1808 lua_pushboolean(L, 0);
jbe@295 1809 lua_pushliteral(L, "SIGTERM received");
jbe@295 1810 lua_pushboolean(L, 1);
jbe@295 1811 return 3;
jbe@295 1812 }
jbe@295 1813 }
jbe@295 1814 if (status == -1) {
jbe@295 1815 if (errno == EINTR) {
jbe@295 1816 lua_pushboolean(L, 1);
jbe@295 1817 return 1;
jbe@295 1818 } else {
jbe@295 1819 moonbr_io_prepare_errmsg();
jbe@295 1820 return luaL_error(L, "Unexpected error during \"select\" system call: %s", errmsg);
jbe@295 1821 }
jbe@295 1822 } else if (status == 0) {
jbe@292 1823 lua_pushboolean(L, 0);
jbe@295 1824 lua_pushliteral(L, "Timeout");
jbe@295 1825 if (check_sigterm) {
jbe@295 1826 lua_pushboolean(L, 0);
jbe@295 1827 return 3;
jbe@295 1828 } else {
jbe@295 1829 return 2;
jbe@295 1830 }
jbe@292 1831 }
jbe@106 1832 }
jbe@295 1833 lua_pushboolean(L, 1);
jbe@295 1834 return 1;
jbe@106 1835 }
jbe@106 1836
jbe@115 1837 static int moonbr_io_timeref(lua_State *L) {
jbe@115 1838 lua_Number sub;
jbe@115 1839 struct timespec tp;
jbe@115 1840 sub = luaL_optnumber(L, 1, 0);
jbe@115 1841 if (clock_gettime(CLOCK_MONOTONIC, &tp)) {
jbe@115 1842 return luaL_error(L, "Could not access CLOCK_MONOTONIC");
jbe@115 1843 }
jbe@115 1844 lua_pushnumber(L, tp.tv_sec + tp.tv_nsec / 1.0e9 - sub);
jbe@115 1845 return 1;
jbe@115 1846 }
jbe@115 1847
jbe@243 1848 #ifdef MOONBR_IO_USE_TLS
jbe@243 1849
jbe@243 1850 #define moonbr_io_tlsconf_string(name, field, func) \
jbe@243 1851 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1852 lua_getfield(L, 1, (field)); \
jbe@243 1853 valuetype = lua_type(L, -1); \
jbe@243 1854 if (valuetype != LUA_TNIL) { \
jbe@243 1855 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1856 value = lua_tostring(L, -1); \
jbe@252 1857 if (func(tlsconf->config, value)) { \
jbe@243 1858 lua_pushnil(L); \
jbe@243 1859 lua_pushfstring(L, "Could not set " name " \"%s\"", value); \
jbe@243 1860 return 2; \
jbe@243 1861 } \
jbe@243 1862 } \
jbe@243 1863 lua_pop(L, 1);
jbe@243 1864
jbe@243 1865 #define moonbr_io_tlsconf_binary(name, field, func) \
jbe@243 1866 /* NOTE: use valuetype = lua_getfield(...) for LUA_VERSION_NUM >= 503 */ \
jbe@243 1867 lua_getfield(L, 1, (field)); \
jbe@243 1868 valuetype = lua_type(L, -1); \
jbe@243 1869 if (valuetype != LUA_TNIL) { \
jbe@243 1870 luaL_argcheck(L, valuetype == LUA_TSTRING, 1, "field \"" field "\" is not a string"); \
jbe@243 1871 value = lua_tolstring(L, -1, &valuelen); \
jbe@252 1872 if (func(tlsconf->config, (void *)value, valuelen)) { \
jbe@243 1873 lua_pushnil(L); \
jbe@243 1874 lua_pushliteral(L, "Could not set " name); \
jbe@243 1875 return 2; \
jbe@243 1876 } \
jbe@243 1877 } \
jbe@243 1878 lua_pop(L, 1);
jbe@243 1879
jbe@243 1880 static int moonbr_io_tlsconf(lua_State *L) {
jbe@252 1881 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1882 int valuetype;
jbe@243 1883 const char *value;
jbe@243 1884 size_t valuelen;
jbe@243 1885 luaL_checktype(L, 1, LUA_TTABLE);
jbe@252 1886 tlsconf = lua_newuserdata(L, sizeof(moonbr_io_tlsconf_t));
jbe@252 1887 tlsconf->config = tls_config_new();
jbe@252 1888 if (!tlsconf->config) {
jbe@243 1889 return luaL_error(L, "Could not allocate memory for TLS configuration");
jbe@243 1890 }
jbe@243 1891 luaL_setmetatable(L, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@245 1892 lua_getfield(L, 1, "mode");
jbe@252 1893 value = lua_tostring(L, -1);
jbe@252 1894 if (value && !strcmp(value, "server")) tlsconf->server = 1;
jbe@252 1895 else if (value && !strcmp(value, "client")) tlsconf->server = 0;
jbe@252 1896 else luaL_argcheck(L, 0, 1, "field \"mode\" must be set to \"server\" or \"client\"");
jbe@245 1897 lua_pop(L, 1);
jbe@243 1898 moonbr_io_tlsconf_string("CA file", "ca_file", tls_config_set_ca_file);
jbe@243 1899 moonbr_io_tlsconf_string("CA path", "ca_path", tls_config_set_ca_path);
jbe@243 1900 moonbr_io_tlsconf_binary("CA", "ca_mem", tls_config_set_ca_mem);
jbe@243 1901 moonbr_io_tlsconf_string("certificate file", "cert_file", tls_config_set_cert_file);
jbe@243 1902 moonbr_io_tlsconf_binary("certificate", "cert_mem", tls_config_set_cert_mem);
jbe@243 1903 moonbr_io_tlsconf_string("key file", "key_file", tls_config_set_key_file);
jbe@243 1904 moonbr_io_tlsconf_binary("key", "key_mem", tls_config_set_key_mem);
jbe@245 1905 #if LUA_VERSION_NUM >= 503
jbe@245 1906 valuetype = lua_getfield(L, 1, "verify_client");
jbe@245 1907 #else
jbe@244 1908 lua_getfield(L, 1, "verify_client");
jbe@245 1909 #endif
jbe@244 1910 if (lua_toboolean(L, -1)) {
jbe@252 1911 value = lua_tostring(L, -1);
jbe@252 1912 if (value && !strcmp(value, "required")) {
jbe@252 1913 tls_config_verify_client(tlsconf->config);
jbe@252 1914 } else if (value && !strcmp(value, "optional")) {
jbe@252 1915 tls_config_verify_client_optional(tlsconf->config);
jbe@244 1916 } else {
jbe@244 1917 luaL_argcheck(L, 0, 1, "field \"verify_client\" must be set to \"required\", \"optional\", or be false or nil");
jbe@244 1918 }
jbe@244 1919 }
jbe@244 1920 lua_pop(L, 1);
jbe@254 1921 // TODO: configurable legacy support
jbe@254 1922 // tls_config_set_protocols(tlsconf->config, TLS_PROTOCOLS_ALL);
jbe@254 1923 // tls_config_set_ciphers(tlsconf->config, "legacy");
jbe@243 1924 return 1;
jbe@243 1925 }
jbe@243 1926
jbe@252 1927 static int moonbr_io_tlsconfgc(lua_State *L) {
jbe@252 1928 moonbr_io_tlsconf_t *tlsconf;
jbe@243 1929 tlsconf = luaL_checkudata(L, 1, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@252 1930 if (tlsconf->config) tls_config_free(tlsconf->config);
jbe@252 1931 tlsconf->config = NULL;
jbe@243 1932 return 0;
jbe@243 1933 }
jbe@243 1934
jbe@246 1935 static int moonbr_io_starttls(lua_State *L) {
jbe@246 1936 moonbr_io_handle_t *handle;
jbe@252 1937 moonbr_io_tlsconf_t *tlsconf;
jbe@246 1938 const char *servername;
jbe@246 1939 struct tls *tls, *tls2;
jbe@246 1940 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@246 1941 if (lua_type(L, 2) == LUA_TTABLE) {
jbe@246 1942 lua_pushcfunction(L, moonbr_io_tlsconf);
jbe@246 1943 lua_pushvalue(L, 2);
jbe@246 1944 lua_call(L, 1, 2);
jbe@246 1945 if (lua_isnil(L, -2)) return 2;
jbe@246 1946 lua_pop(L, 1);
jbe@246 1947 lua_replace(L, 2);
jbe@246 1948 }
jbe@246 1949 tlsconf = luaL_checkudata(L, 2, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@246 1950 if (handle->closed) return luaL_error(L, "Attempt to start TLS on a closed I/O handle");
jbe@246 1951 if (handle->finished) return luaL_error(L, "Attempt to start TLS on a finished I/O handle");
jbe@247 1952 if (handle->tls) return luaL_error(L, "Attempt to start TLS twice");
jbe@246 1953 if (handle->readbufin || handle->writebufin) {
jbe@246 1954 return luaL_error(L, "Attempt to start TLS on an I/O handle with non-empty buffers");
jbe@246 1955 }
jbe@252 1956 if (tlsconf->server) tls = tls_server();
jbe@252 1957 else {
jbe@246 1958 servername = luaL_checkstring(L, 3);
jbe@246 1959 tls = tls_client();
jbe@246 1960 }
jbe@246 1961 if (!tls) {
jbe@246 1962 return luaL_error(L, "Could not allocate memory for TLS context");
jbe@246 1963 }
jbe@252 1964 if (tls_configure(tls, tlsconf->config)) goto moonbr_io_starttls_error;
jbe@252 1965 if (tlsconf->server) {
jbe@246 1966 if (tls_accept_socket(tls, &tls2, handle->fd)) goto moonbr_io_starttls_error;
jbe@246 1967 handle->servertls = tls;
jbe@246 1968 handle->tls = tls2;
jbe@246 1969 } else {
jbe@246 1970 if (tls_connect_socket(tls, handle->fd, servername)) goto moonbr_io_starttls_error;
jbe@246 1971 handle->tls = tls;
jbe@246 1972 }
jbe@246 1973 lua_settop(L, 1);
jbe@246 1974 return 1;
jbe@246 1975 moonbr_io_starttls_error:
jbe@246 1976 lua_pushnil(L);
jbe@246 1977 lua_pushstring(L, tls_error(tls));
jbe@246 1978 tls_free(tls);
jbe@246 1979 return 2;
jbe@246 1980 }
jbe@246 1981
jbe@258 1982 #endif /* MOONBR_IO_USE_TLS */
jbe@243 1983
jbe@79 1984 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 1985 {"read", moonbr_io_read},
jbe@85 1986 {"read_nb", moonbr_io_read_nb},
jbe@140 1987 {"read_call", moonbr_io_read_call},
jbe@140 1988 {"read_yield", moonbr_io_read_yield},
jbe@86 1989 {"drain", moonbr_io_drain},
jbe@86 1990 {"drain_nb", moonbr_io_drain_nb},
jbe@144 1991 {"drain_call", moonbr_io_drain_call},
jbe@144 1992 {"drain_yield", moonbr_io_drain_yield},
jbe@80 1993 {"write", moonbr_io_write},
jbe@81 1994 {"write_nb", moonbr_io_write_nb},
jbe@145 1995 {"write_call", moonbr_io_write_call},
jbe@145 1996 {"write_yield", moonbr_io_write_yield},
jbe@80 1997 {"flush", moonbr_io_flush},
jbe@81 1998 {"flush_nb", moonbr_io_flush_nb},
jbe@145 1999 {"flush_call", moonbr_io_flush_call},
jbe@145 2000 {"flush_yield", moonbr_io_flush_yield},
jbe@88 2001 {"finish", moonbr_io_finish},
jbe@87 2002 {"close", moonbr_io_close},
jbe@85 2003 {"reset", moonbr_io_reset},
jbe@246 2004 #ifdef MOONBR_IO_USE_TLS
jbe@246 2005 {"starttls", moonbr_io_starttls},
jbe@246 2006 #endif
jbe@79 2007 {NULL, NULL}
jbe@79 2008 };
jbe@79 2009
jbe@79 2010 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 2011 {"__index", moonbr_io_handleindex},
jbe@79 2012 {"__newindex", moonbr_io_handlenewindex},
jbe@108 2013 {"__gc", moonbr_io_handlegc},
jbe@108 2014 {NULL, NULL}
jbe@108 2015 };
jbe@108 2016
jbe@108 2017 static const struct luaL_Reg moonbr_io_listener_methods[] = {
jbe@108 2018 {"accept", moonbr_io_accept},
jbe@108 2019 {"accept_nb", moonbr_io_accept_nb},
jbe@108 2020 {"close", moonbr_io_unlisten},
jbe@108 2021 {NULL, NULL}
jbe@108 2022 };
jbe@108 2023
jbe@108 2024 static const struct luaL_Reg moonbr_io_listener_metamethods[] = {
jbe@108 2025 {"__gc", moonbr_io_listenergc},
jbe@79 2026 {NULL, NULL}
jbe@79 2027 };
jbe@79 2028
jbe@205 2029 static const struct luaL_Reg moonbr_io_child_methods[] = {
jbe@205 2030 {"kill", moonbr_io_kill},
jbe@205 2031 {"wait", moonbr_io_wait},
jbe@205 2032 {"wait_nb", moonbr_io_wait_nb},
jbe@205 2033 {"wait_call", moonbr_io_wait_call},
jbe@205 2034 {"wait_yield", moonbr_io_wait_yield},
jbe@205 2035 {NULL, NULL}
jbe@205 2036 };
jbe@205 2037
jbe@205 2038 static const struct luaL_Reg moonbr_io_child_metamethods[] = {
jbe@205 2039 {"__index", moonbr_io_childindex},
jbe@205 2040 {"__newindex", moonbr_io_childnewindex},
jbe@205 2041 {"__gc", moonbr_io_childgc},
jbe@205 2042 {NULL, NULL}
jbe@205 2043 };
jbe@205 2044
jbe@79 2045 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@111 2046 {"localconnect", moonbr_io_localconnect},
jbe@111 2047 {"localconnect_nb", moonbr_io_localconnect_nb},
jbe@98 2048 {"tcpconnect", moonbr_io_tcpconnect},
jbe@99 2049 {"tcpconnect_nb", moonbr_io_tcpconnect_nb},
jbe@112 2050 {"locallisten", moonbr_io_locallisten},
jbe@108 2051 {"tcplisten", moonbr_io_tcplisten},
jbe@205 2052 {"exec", moonbr_io_exec},
jbe@288 2053 {"catch_sigterm", moonbr_io_catch_sigterm},
jbe@266 2054 {"getpid", moonbr_io_getpid},
jbe@106 2055 {"poll", moonbr_io_poll},
jbe@115 2056 {"timeref", moonbr_io_timeref},
jbe@243 2057 #ifdef MOONBR_IO_USE_TLS
jbe@243 2058 {"tlsconf", moonbr_io_tlsconf},
jbe@243 2059 #endif
jbe@79 2060 {NULL, NULL}
jbe@79 2061 };
jbe@79 2062
jbe@243 2063 #ifdef MOONBR_IO_USE_TLS
jbe@258 2064
jbe@243 2065 static const struct luaL_Reg moonbr_io_tlsconf_metamethods[] = {
jbe@243 2066 {"__gc", moonbr_io_tlsconfgc},
jbe@243 2067 {NULL, NULL}
jbe@243 2068 };
jbe@258 2069
jbe@258 2070 #endif /* MOONBR_IO_USE_TLS */
jbe@243 2071
jbe@79 2072 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 2073
jbe@113 2074 signal(SIGPIPE, SIG_IGN); /* generate I/O errors instead of signal 13 */
jbe@113 2075
jbe@80 2076 lua_newtable(L); // module
jbe@80 2077
jbe@79 2078 lua_newtable(L); // public metatable
jbe@79 2079 lua_newtable(L); // handle methods
jbe@79 2080 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 2081 lua_pushvalue(L, -1);
jbe@146 2082 lua_setfield(L, -4, "handle_pt");
jbe@79 2083 lua_setfield(L, -2, "__index");
jbe@79 2084 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 2085
jbe@79 2086 lua_newtable(L); // handle metatable
jbe@79 2087 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 2088 lua_pushvalue(L, -1);
jbe@146 2089 lua_setfield(L, -3, "handle_mt");
jbe@79 2090 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 2091
jbe@108 2092 lua_newtable(L); // listener metatable
jbe@108 2093 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 2094 lua_newtable(L); // listener methods
jbe@108 2095 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 2096 lua_pushvalue(L, -1);
jbe@146 2097 lua_setfield(L, -4, "listener_pt");
jbe@108 2098 lua_setfield(L, -2, "__index");
jbe@146 2099 lua_pushvalue(L, -1);
jbe@146 2100 lua_setfield(L, -3, "listener_mt");
jbe@108 2101 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 2102
jbe@205 2103 lua_newtable(L); // child methods
jbe@205 2104 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205 2105 lua_pushvalue(L, -1);
jbe@205 2106 lua_setfield(L, -3, "child_pt");
jbe@205 2107 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 2108 lua_newtable(L); // child metatable
jbe@205 2109 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205 2110 lua_pushvalue(L, -1);
jbe@205 2111 lua_setfield(L, -3, "child_mt");
jbe@205 2112 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 2113
jbe@243 2114 #ifdef MOONBR_IO_USE_TLS
jbe@243 2115 if(tls_init()) {
jbe@243 2116 return luaL_error(L, "Could not initialize TLS library");
jbe@243 2117 }
jbe@243 2118 lua_newtable(L); // tlsconf metatable
jbe@243 2119 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243 2120 lua_pushvalue(L, -1);
jbe@243 2121 lua_setfield(L, -3, "tlsconf_mt");
jbe@243 2122 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243 2123 #endif
jbe@243 2124
jbe@205 2125 moonbr_io_pushhandle(L, 0);
jbe@205 2126 lua_setfield(L, -2, "stdin");
jbe@205 2127 moonbr_io_pushhandle(L, 1);
jbe@205 2128 lua_setfield(L, -2, "stdout");
jbe@205 2129 moonbr_io_pushhandle(L, 2);
jbe@205 2130 lua_setfield(L, -2, "stderr");
jbe@270 2131
jbe@79 2132 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 2133 return 1;
jbe@79 2134
jbe@79 2135 }
jbe@79 2136

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