moonbridge

annotate moonbridge_io.c @ 280:1a4f89f4c712

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Modified behavior of moonbridge_io.signalsocket(...); Fixed usage of moonbridge_io.signalsocket(...) in moonbridge_http module
author jbe
date Tue Jun 06 21:58:26 2017 +0200 (2017-06-06)
parents d4c82c90d244
children 6bb191b6ead5
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@278 58 #define MOONBR_IO_MAXSIGNUM 127
jbe@278 59 static int moonbr_io_signalfds[2*(MOONBR_IO_MAXSIGNUM+1)];
jbe@278 60 #define moonbr_io_signalfd_read(x) moonbr_io_signalfds[2*(x)+0]
jbe@278 61 #define moonbr_io_signalfd_write(x) moonbr_io_signalfds[2*(x)+1]
jbe@266 62
jbe@79 63 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 64 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@108 65 #define MOONBR_IO_LISTENER_MT_REGKEY "moonbridge_io_listener"
jbe@205 66 #define MOONBR_IO_CHILD_MT_REGKEY "moonbridge_io_child"
jbe@205 67 #define MOONBR_IO_CHILD_PT_REGKEY "moonbridge_io_child_pt"
jbe@271 68 #define MOONBR_IO_SIGNALS_REGKEY "moonbridge_io_signals"
jbe@280 69 #define MOONBR_IO_SIGNALSOCKETS_REGKEY "moonbridge_io_signalsockets"
jbe@79 70
jbe@243 71 #ifdef MOONBR_IO_USE_TLS
jbe@258 72
jbe@243 73 #define MOONBR_IO_TLSCONF_MT_REGKEY "moonbridge_io_tlsconf"
jbe@252 74
jbe@252 75 typedef struct {
jbe@252 76 struct tls_config *config;
jbe@252 77 int server;
jbe@252 78 } moonbr_io_tlsconf_t;
jbe@258 79
jbe@258 80 #endif /* MOONBR_IO_USE_TLS */
jbe@243 81
jbe@79 82 typedef struct {
jbe@79 83 int fd;
jbe@107 84 int issock;
jbe@107 85 sa_family_t addrfam;
jbe@94 86 int finished;
jbe@94 87 int closed;
jbe@81 88 int nonblocking;
jbe@95 89 int nopush;
jbe@85 90 int readerr;
jbe@105 91 int readbufin;
jbe@105 92 int readbufout;
jbe@81 93 int writeerr;
jbe@83 94 size_t writeleft;
jbe@132 95 size_t flushedleft;
jbe@83 96 #if LUA_VERSION_NUM >= 503
jbe@83 97 lua_Integer writeqin;
jbe@83 98 lua_Integer writeqout;
jbe@83 99 #else
jbe@83 100 int writeqin;
jbe@83 101 int writeqout;
jbe@83 102 #endif
jbe@83 103 size_t writeqoff;
jbe@103 104 int writebufin;
jbe@103 105 int writebufout;
jbe@85 106 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 107 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@246 108 #ifdef MOONBR_IO_USE_TLS
jbe@250 109 struct tls *tls;
jbe@250 110 struct tls *servertls;
jbe@250 111 int tlshandshake;
jbe@261 112 int tlsclosing;
jbe@246 113 #endif
jbe@79 114 } moonbr_io_handle_t;
jbe@79 115
jbe@108 116 typedef struct {
jbe@108 117 int fd;
jbe@118 118 sa_family_t addrfam;
jbe@108 119 int nonblocking;
jbe@108 120 } moonbr_io_listener_t;
jbe@108 121
jbe@205 122 typedef struct {
jbe@205 123 pid_t pid;
jbe@205 124 } moonbr_io_child_t;
jbe@205 125
jbe@148 126 static int moonbr_io_yield(lua_State *L) {
jbe@149 127 return lua_yield(L, lua_gettop(L));
jbe@140 128 }
jbe@140 129
jbe@140 130 #if LUA_VERSION_NUM >= 503
jbe@140 131 static int moonbr_io_cont_returnall(lua_State *L, int status, lua_KContext ctx) {
jbe@140 132 #else
jbe@140 133 static int moonbr_io_cont_returnall(lua_State *L) {
jbe@140 134 #endif
jbe@140 135 return lua_gettop(L);
jbe@140 136 }
jbe@140 137
jbe@145 138 #define moonbr_io_yield_wrapper(yieldfunc, callfunc) \
jbe@145 139 static int yieldfunc(lua_State *L) { \
jbe@145 140 int args; \
jbe@145 141 lua_pushcfunction(L, callfunc); \
jbe@145 142 lua_insert(L, 1); \
jbe@145 143 args = lua_gettop(L); \
jbe@148 144 lua_pushcfunction(L, moonbr_io_yield); \
jbe@145 145 lua_insert(L, 3); \
jbe@145 146 lua_callk(L, args, LUA_MULTRET, 0, moonbr_io_cont_returnall); \
jbe@145 147 return lua_gettop(L); \
jbe@145 148 }
jbe@145 149
jbe@256 150 static int moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@95 151 int flags;
jbe@256 152 if (handle->nonblocking == nonblocking) return 0;
jbe@95 153 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@256 154 if (flags == -1) return -1;
jbe@95 155 if (nonblocking) flags |= O_NONBLOCK;
jbe@95 156 else flags &= ~O_NONBLOCK;
jbe@256 157 if (fcntl(handle->fd, F_SETFL, flags) == -1) return -1;
jbe@95 158 handle->nonblocking = nonblocking;
jbe@256 159 return 0;
jbe@81 160 }
jbe@81 161
jbe@256 162 static int moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 163 struct linger lingerval = { 0, };
jbe@256 164 if (!handle->issock) return 0;
jbe@87 165 if (timeout >= 0) {
jbe@87 166 lingerval.l_onoff = 1;
jbe@87 167 lingerval.l_linger = timeout;
jbe@87 168 }
jbe@256 169 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) return -1;
jbe@256 170 return 0;
jbe@87 171 }
jbe@87 172
jbe@256 173 static inline int moonbr_io_handle_set_nopush(lua_State *L, moonbr_io_handle_t *handle, int nopush) {
jbe@96 174 #if defined(TCP_NOPUSH) || defined(TCP_CORK)
jbe@107 175 if (
jbe@107 176 !(handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) ||
jbe@107 177 handle->nopush == nopush
jbe@256 178 ) return 0;
jbe@96 179 #if defined(TCP_NOPUSH)
jbe@256 180 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_NOPUSH, &nopush, sizeof(nopush))) return -1;
jbe@104 181 #elif defined(TCP_CORK)
jbe@256 182 if (setsockopt(handle->fd, IPPROTO_TCP, TCP_CORK, &nopush, sizeof(nopush))) return -1;
jbe@251 183 #endif
jbe@95 184 handle->nopush = nopush;
jbe@96 185 #else
jbe@96 186 #warning Neither TCP_NOPUSH nor TCP_CORK is available
jbe@96 187 #endif
jbe@256 188 return 0;
jbe@95 189 }
jbe@95 190
jbe@86 191 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 192 moonbr_io_handle_t *handle;
jbe@85 193 lua_Integer maxread;
jbe@85 194 const char *terminatorstr;
jbe@210 195 size_t terminatorlen;
jbe@210 196 char terminator = 0; /* initialize to avoid compiler warning */
jbe@85 197 luaL_Buffer luabuf;
jbe@85 198 size_t luabufcnt = 0;
jbe@105 199 int remaining;
jbe@85 200 char *terminatorpos;
jbe@103 201 ssize_t bytesread;
jbe@85 202 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@153 203 maxread = luaL_optinteger(L, 2, -1);
jbe@85 204 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 205 if (terminatorlen) {
jbe@85 206 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 207 terminator = terminatorstr[0];
jbe@85 208 }
jbe@86 209 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@94 210 if (handle->closed) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 211 if (handle->readerr) {
jbe@85 212 lua_pushnil(L);
jbe@85 213 lua_pushliteral(L, "Previous read error");
jbe@85 214 return 2;
jbe@85 215 }
jbe@143 216 if (handle->fd < 0) {
jbe@143 217 /* fake EOF to simulate shutdown */
jbe@143 218 if (!drain) lua_pushliteral(L, "");
jbe@143 219 else lua_pushinteger(L, 0);
jbe@143 220 lua_pushliteral(L, "eof");
jbe@143 221 return 2;
jbe@143 222 }
jbe@105 223 handle->readerr = 1;
jbe@257 224 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@86 225 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 226 while (1) {
jbe@105 227 remaining = -1;
jbe@142 228 terminatorpos = NULL;
jbe@105 229 if (
jbe@153 230 maxread >= 0 &&
jbe@143 231 handle->readbufin - handle->readbufout >= (size_t)maxread - luabufcnt
jbe@105 232 ) {
jbe@142 233 remaining = (size_t)maxread - luabufcnt;
jbe@193 234 if (terminatorlen) {
jbe@193 235 terminatorpos = memchr(
jbe@193 236 handle->readbuf + handle->readbufout,
jbe@193 237 terminator,
jbe@193 238 remaining
jbe@193 239 );
jbe@193 240 }
jbe@85 241 } else if (terminatorlen) {
jbe@105 242 terminatorpos = memchr(
jbe@105 243 handle->readbuf + handle->readbufout,
jbe@105 244 terminator,
jbe@105 245 handle->readbufin - handle->readbufout
jbe@105 246 );
jbe@85 247 }
jbe@142 248 if (terminatorpos) remaining = 1 + (
jbe@142 249 terminatorpos - (handle->readbuf + handle->readbufout)
jbe@142 250 );
jbe@105 251 if (remaining >= 0) {
jbe@86 252 if (!drain) {
jbe@105 253 luaL_addlstring(
jbe@105 254 &luabuf,
jbe@105 255 handle->readbuf + handle->readbufout,
jbe@105 256 remaining
jbe@105 257 );
jbe@86 258 luaL_pushresult(&luabuf);
jbe@90 259 } else {
jbe@105 260 lua_pushinteger(L, luabufcnt + remaining);
jbe@86 261 }
jbe@143 262 if (terminatorpos) lua_pushliteral(L, "term");
jbe@143 263 else lua_pushliteral(L, "maxlen");
jbe@105 264 handle->readbufout += remaining;
jbe@105 265 if (handle->readbufout == handle->readbufin) {
jbe@105 266 handle->readbufin = 0;
jbe@143 267 handle->readbufout = 0;
jbe@105 268 }
jbe@104 269 handle->readerr = 0;
jbe@143 270 return 2;
jbe@85 271 }
jbe@105 272 if (!drain) luaL_addlstring(
jbe@105 273 &luabuf,
jbe@105 274 handle->readbuf + handle->readbufout,
jbe@105 275 handle->readbufin - handle->readbufout
jbe@105 276 );
jbe@105 277 luabufcnt += handle->readbufin - handle->readbufout;
jbe@143 278 handle->readbufout = 0;
jbe@249 279 #ifdef MOONBR_IO_USE_TLS
jbe@249 280 if (handle->tls) {
jbe@250 281 do {
jbe@250 282 if (!handle->tlshandshake) {
jbe@250 283 do bytesread = tls_handshake(handle->tls);
jbe@250 284 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 285 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 286 handle->tlshandshake = bytesread;
jbe@250 287 errno = EAGAIN;
jbe@250 288 break;
jbe@250 289 }
jbe@250 290 if (bytesread < 0) {
jbe@250 291 lua_pushnil(L);
jbe@250 292 lua_pushstring(L, tls_error(handle->tls));
jbe@250 293 return 2;
jbe@250 294 }
jbe@250 295 handle->tlshandshake = 1;
jbe@250 296 }
jbe@250 297 do bytesread = tls_read(handle->tls, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@250 298 while (!nonblocking && (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT));
jbe@250 299 if (bytesread == TLS_WANT_POLLIN || bytesread == TLS_WANT_POLLOUT) {
jbe@250 300 errno = EAGAIN;
jbe@250 301 break;
jbe@250 302 }
jbe@250 303 if (bytesread < 0) {
jbe@250 304 lua_pushnil(L);
jbe@250 305 lua_pushstring(L, tls_error(handle->tls));
jbe@250 306 return 2;
jbe@250 307 }
jbe@250 308 } while (0);
jbe@249 309 }
jbe@249 310 else
jbe@249 311 #endif
jbe@249 312 do bytesread = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@249 313 while (bytesread < 0 && (errno == EINTR));
jbe@105 314 if (
jbe@105 315 bytesread == 0 || (
jbe@105 316 nonblocking &&
jbe@105 317 bytesread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)
jbe@105 318 )
jbe@105 319 ) {
jbe@105 320 handle->readbufin = 0;
jbe@143 321 if (!drain) luaL_pushresult(&luabuf);
jbe@143 322 else lua_pushinteger(L, luabufcnt);
jbe@143 323 if (bytesread == 0) lua_pushliteral(L, "eof");
jbe@143 324 else lua_pushliteral(L, "block");
jbe@105 325 handle->readerr = 0;
jbe@143 326 return 2;
jbe@105 327 }
jbe@257 328 if (bytesread < 0) moonbr_io_return_errmsg();
jbe@105 329 handle->readbufin = bytesread;
jbe@86 330 }
jbe@85 331 }
jbe@85 332
jbe@85 333 static int moonbr_io_read(lua_State *L) {
jbe@86 334 return moonbr_io_read_impl(L, 0, 0);
jbe@85 335 }
jbe@85 336
jbe@85 337 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 338 return moonbr_io_read_impl(L, 1, 0);
jbe@86 339 }
jbe@86 340
jbe@86 341 static int moonbr_io_drain(lua_State *L) {
jbe@86 342 return moonbr_io_read_impl(L, 0, 1);
jbe@86 343 }
jbe@86 344
jbe@86 345 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 346 return moonbr_io_read_impl(L, 1, 1);
jbe@85 347 }
jbe@85 348
jbe@140 349 #if LUA_VERSION_NUM >= 503
jbe@140 350 static int moonbr_io_read_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@140 351 #else
jbe@140 352 static int moonbr_io_read_cont(lua_State *L) {
jbe@140 353 #endif
jbe@143 354 lua_Integer remaining;
jbe@143 355 size_t len;
jbe@140 356 #if !(LUA_VERSION_NUM >= 503)
jbe@140 357 int ctx = 0;
jbe@140 358 lua_getctx(L, &ctx);
jbe@140 359 #endif
jbe@140 360 remaining = lua_tointeger(L, 3);
jbe@140 361 while (1) {
jbe@140 362 lua_pushcfunction(L, moonbr_io_read_nb);
jbe@140 363 lua_pushvalue(L, 1);
jbe@140 364 lua_pushvalue(L, 3);
jbe@140 365 lua_pushvalue(L, 4);
jbe@140 366 lua_call(L, 3, 2);
jbe@143 367 if (lua_isnil(L, -2)) return 2;
jbe@143 368 lua_insert(L, -2);
jbe@143 369 len = lua_rawlen(L, -1);
jbe@143 370 if (ctx == 0) {
jbe@143 371 lua_replace(L, 5);
jbe@143 372 ctx = 1;
jbe@143 373 } else if (ctx == 1) {
jbe@143 374 lua_pushvalue(L, 5);
jbe@143 375 lua_newtable(L);
jbe@143 376 lua_replace(L, 5);
jbe@143 377 lua_rawseti(L, 5, 2);
jbe@143 378 lua_rawseti(L, 5, 1);
jbe@143 379 ctx = 2;
jbe@140 380 } else {
jbe@143 381 lua_rawseti(L, 5, lua_rawlen(L, 5) + 1);
jbe@140 382 }
jbe@144 383 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 384 lua_pop(L, 1);
jbe@144 385 if (remaining >= 0 && len) {
jbe@143 386 remaining -= len;
jbe@143 387 lua_pushinteger(L, remaining);
jbe@143 388 lua_replace(L, 3);
jbe@143 389 }
jbe@140 390 lua_pushvalue(L, 2);
jbe@152 391 lua_callk(L, 0, 0, ctx, moonbr_io_read_cont);
jbe@140 392 }
jbe@140 393 if (ctx == 1) {
jbe@140 394 lua_pushvalue(L, 5);
jbe@140 395 } else {
jbe@140 396 luaL_Buffer buf;
jbe@140 397 lua_Integer i, chunkcount;
jbe@140 398 chunkcount = lua_rawlen(L, 5);
jbe@140 399 luaL_buffinit(L, &buf);
jbe@140 400 for (i=1; i<=chunkcount && i>0; i++) {
jbe@140 401 lua_rawgeti(L, 5, i);
jbe@140 402 luaL_addvalue(&buf);
jbe@140 403 }
jbe@140 404 luaL_pushresult(&buf);
jbe@140 405 }
jbe@143 406 lua_pushvalue(L, -2);
jbe@143 407 return 2;
jbe@140 408 }
jbe@140 409
jbe@140 410 static int moonbr_io_read_call(lua_State *L) {
jbe@140 411 lua_settop(L, 4);
jbe@140 412 lua_pushnil(L);
jbe@140 413 #if LUA_VERSION_NUM >= 503
jbe@140 414 return moonbr_io_read_cont(L, 0, 0);
jbe@140 415 #else
jbe@140 416 return moonbr_io_read_cont(L);
jbe@140 417 #endif
jbe@140 418 }
jbe@140 419
jbe@145 420 moonbr_io_yield_wrapper(moonbr_io_read_yield, moonbr_io_read_call);
jbe@140 421
jbe@144 422 #if LUA_VERSION_NUM >= 503
jbe@144 423 static int moonbr_io_drain_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@144 424 #else
jbe@144 425 static int moonbr_io_drain_cont(lua_State *L) {
jbe@144 426 #endif
jbe@144 427 lua_Integer remaining, len;
jbe@144 428 size_t totallen = 0;
jbe@144 429 #if !(LUA_VERSION_NUM >= 503)
jbe@144 430 int ctx = 0;
jbe@144 431 lua_getctx(L, &ctx);
jbe@144 432 #endif
jbe@144 433 remaining = lua_tointeger(L, 3);
jbe@144 434 while (1) {
jbe@144 435 lua_pushcfunction(L, moonbr_io_drain_nb);
jbe@144 436 lua_pushvalue(L, 1);
jbe@144 437 lua_pushvalue(L, 3);
jbe@144 438 lua_pushvalue(L, 4);
jbe@144 439 lua_call(L, 3, 2);
jbe@144 440 if (lua_isnil(L, -2)) return 2;
jbe@144 441 lua_insert(L, -2);
jbe@144 442 len = lua_tointeger(L, -1);
jbe@144 443 lua_pop(L, 1);
jbe@144 444 totallen += len;
jbe@144 445 if (strcmp(lua_tostring(L, -1), "block") != 0) break;
jbe@144 446 lua_pop(L, 1);
jbe@144 447 if (remaining >= 0 && len) {
jbe@144 448 remaining -= len;
jbe@144 449 lua_pushinteger(L, remaining);
jbe@144 450 lua_replace(L, 3);
jbe@144 451 }
jbe@144 452 lua_pushvalue(L, 2);
jbe@152 453 lua_callk(L, 0, 0, ctx, moonbr_io_drain_cont);
jbe@144 454 }
jbe@144 455 lua_pushinteger(L, totallen);
jbe@144 456 lua_pushvalue(L, -2);
jbe@144 457 return 2;
jbe@144 458 }
jbe@144 459
jbe@144 460 static int moonbr_io_drain_call(lua_State *L) {
jbe@144 461 #if LUA_VERSION_NUM >= 503
jbe@144 462 return moonbr_io_drain_cont(L, 0, 0);
jbe@144 463 #else
jbe@144 464 return moonbr_io_drain_cont(L);
jbe@144 465 #endif
jbe@144 466 }
jbe@144 467
jbe@145 468 moonbr_io_yield_wrapper(moonbr_io_drain_yield, moonbr_io_drain_call);
jbe@144 469
jbe@250 470 #ifdef MOONBR_IO_USE_TLS
jbe@258 471
jbe@250 472 #define moonbr_io_write_tls(buf, buflen) \
jbe@250 473 if (handle->tls) { \
jbe@250 474 do { \
jbe@250 475 if (!handle->tlshandshake) { \
jbe@250 476 do written = tls_handshake(handle->tls); \
jbe@250 477 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 478 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 479 handle->tlshandshake = written; \
jbe@250 480 errno = EAGAIN; \
jbe@250 481 break; \
jbe@250 482 } \
jbe@250 483 if (written < 0) { \
jbe@250 484 lua_pushnil(L); \
jbe@250 485 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 486 return 2; \
jbe@250 487 } \
jbe@250 488 handle->tlshandshake = 1; \
jbe@250 489 } \
jbe@250 490 do written = tls_write(handle->tls, (buf), (buflen)); \
jbe@250 491 while (!nonblocking && (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT)); \
jbe@250 492 if (written == TLS_WANT_POLLIN || written == TLS_WANT_POLLOUT) { \
jbe@250 493 errno = EAGAIN; \
jbe@250 494 break; \
jbe@250 495 } \
jbe@250 496 if (written < 0) { \
jbe@250 497 lua_pushnil(L); \
jbe@250 498 lua_pushstring(L, tls_error(handle->tls)); \
jbe@250 499 return 2; \
jbe@250 500 } \
jbe@250 501 } while (0); \
jbe@250 502 } \
jbe@250 503 else
jbe@258 504
jbe@258 505 #endif /* MOONBR_IO_USE_TLS */
jbe@250 506
jbe@81 507 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 508 moonbr_io_handle_t *handle;
jbe@80 509 int i, top;
jbe@80 510 const char *str;
jbe@92 511 size_t strlen;
jbe@103 512 ssize_t written;
jbe@80 513 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 514 if (handle->closed) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@94 515 if (handle->finished) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 516 if (handle->writeerr) {
jbe@80 517 lua_pushnil(L);
jbe@80 518 lua_pushliteral(L, "Previous write error");
jbe@80 519 return 2;
jbe@80 520 }
jbe@103 521 handle->writeerr = 1;
jbe@257 522 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@84 523 top = lua_gettop(L);
jbe@81 524 lua_getuservalue(L, 1);
jbe@103 525 lua_getfield(L, -1, "writequeue");
jbe@84 526 for (i=2; i<=top; i++) {
jbe@84 527 luaL_checklstring(L, i, &strlen);
jbe@84 528 lua_pushvalue(L, i);
jbe@84 529 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 530 handle->writeleft += strlen;
jbe@81 531 }
jbe@132 532 if (flush) handle->flushedleft = handle->writeleft;
jbe@83 533 while (handle->writeqout != handle->writeqin) {
jbe@83 534 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 535 str = lua_tolstring(L, -1, &strlen);
jbe@92 536 while (handle->writeqoff < strlen) {
jbe@103 537 if (
jbe@132 538 strlen - handle->writeqoff <
jbe@103 539 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 540 ) {
jbe@103 541 memcpy(
jbe@103 542 handle->writebuf + handle->writebufin,
jbe@103 543 str + handle->writeqoff,
jbe@103 544 strlen - handle->writeqoff
jbe@103 545 );
jbe@103 546 handle->writebufin += strlen - handle->writeqoff;
jbe@80 547 break;
jbe@80 548 } else {
jbe@103 549 memcpy(
jbe@103 550 handle->writebuf + handle->writebufin,
jbe@103 551 str + handle->writeqoff,
jbe@103 552 MOONBR_IO_WRITEBUFLEN - handle->writebufin
jbe@103 553 );
jbe@103 554 handle->writeqoff += MOONBR_IO_WRITEBUFLEN - handle->writebufin;
jbe@228 555 handle->writebufin = MOONBR_IO_WRITEBUFLEN;
jbe@103 556 while (handle->writebufout < MOONBR_IO_WRITEBUFLEN) {
jbe@257 557 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 558 #ifdef MOONBR_IO_USE_TLS
jbe@250 559 moonbr_io_write_tls(
jbe@250 560 handle->writebuf + handle->writebufout,
jbe@250 561 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@250 562 )
jbe@249 563 #endif
jbe@103 564 written = write(
jbe@103 565 handle->fd,
jbe@103 566 handle->writebuf + handle->writebufout,
jbe@103 567 MOONBR_IO_WRITEBUFLEN - handle->writebufout
jbe@103 568 );
jbe@103 569 if (written < 0) {
jbe@81 570 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 571 goto moonbr_io_write_impl_block;
jbe@257 572 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@103 573 } else {
jbe@103 574 handle->writebufout += written;
jbe@103 575 handle->writeleft -= written;
jbe@133 576 if (handle->flushedleft) {
jbe@133 577 if (written >= handle->flushedleft) {
jbe@133 578 handle->flushedleft = 0;
jbe@257 579 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 580 } else {
jbe@133 581 handle->flushedleft -= written;
jbe@133 582 }
jbe@133 583 }
jbe@80 584 }
jbe@80 585 }
jbe@103 586 handle->writebufin = 0;
jbe@103 587 handle->writebufout = 0;
jbe@80 588 }
jbe@80 589 }
jbe@81 590 handle->writeqoff = 0;
jbe@81 591 lua_pop(L, 1);
jbe@81 592 lua_pushnil(L);
jbe@83 593 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 594 }
jbe@132 595 while (handle->flushedleft) {
jbe@257 596 if (moonbr_io_handle_set_nopush(L, handle, 1)) moonbr_io_return_errmsg();
jbe@249 597 #ifdef MOONBR_IO_USE_TLS
jbe@250 598 moonbr_io_write_tls(
jbe@250 599 handle->writebuf + handle->writebufout,
jbe@250 600 handle->writebufin - handle->writebufout
jbe@250 601 )
jbe@249 602 #endif
jbe@132 603 written = write(
jbe@132 604 handle->fd,
jbe@132 605 handle->writebuf + handle->writebufout,
jbe@132 606 handle->writebufin - handle->writebufout
jbe@132 607 );
jbe@132 608 if (written < 0) {
jbe@132 609 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@132 610 goto moonbr_io_write_impl_block;
jbe@257 611 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@132 612 } else {
jbe@132 613 handle->writebufout += written;
jbe@132 614 handle->writeleft -= written;
jbe@133 615 if (handle->flushedleft) {
jbe@133 616 if (written >= handle->flushedleft) {
jbe@133 617 handle->flushedleft = 0;
jbe@257 618 if (moonbr_io_handle_set_nopush(L, handle, 0)) moonbr_io_return_errmsg();
jbe@133 619 } else {
jbe@133 620 handle->flushedleft -= written;
jbe@133 621 }
jbe@133 622 }
jbe@81 623 }
jbe@132 624 }
jbe@132 625 if (handle->writebufout == handle->writebufin) {
jbe@103 626 handle->writebufin = 0;
jbe@103 627 handle->writebufout = 0;
jbe@81 628 }
jbe@103 629 if (nonblocking) lua_pushinteger(L, 0);
jbe@103 630 else lua_pushvalue(L, 1);
jbe@103 631 handle->writeerr = 0;
jbe@80 632 return 1;
jbe@81 633 moonbr_io_write_impl_block:
jbe@91 634 lua_pushinteger(L, handle->writeleft);
jbe@103 635 handle->writeerr = 0;
jbe@81 636 return 1;
jbe@81 637 }
jbe@81 638
jbe@81 639 static int moonbr_io_write(lua_State *L) {
jbe@81 640 return moonbr_io_write_impl(L, 0, 0);
jbe@81 641 }
jbe@81 642
jbe@81 643 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 644 return moonbr_io_write_impl(L, 1, 0);
jbe@80 645 }
jbe@80 646
jbe@80 647 static int moonbr_io_flush(lua_State *L) {
jbe@81 648 return moonbr_io_write_impl(L, 0, 1);
jbe@81 649 }
jbe@81 650
jbe@81 651 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 652 return moonbr_io_write_impl(L, 1, 1);
jbe@80 653 }
jbe@80 654
jbe@145 655 #if LUA_VERSION_NUM >= 503
jbe@145 656 static int moonbr_io_write_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@145 657 #else
jbe@145 658 static int moonbr_io_write_cont(lua_State *L) {
jbe@145 659 #endif
jbe@145 660 while (1) {
jbe@145 661 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 662 lua_pushvalue(L, 1);
jbe@145 663 lua_call(L, 1, 2);
jbe@145 664 if (lua_isnil(L, -2)) return 2;
jbe@145 665 if (!lua_tointeger(L, -2)) {
jbe@145 666 lua_pushvalue(L, 1);
jbe@145 667 return 1;
jbe@145 668 }
jbe@145 669 lua_pop(L, 2);
jbe@145 670 lua_pushvalue(L, 2);
jbe@152 671 lua_callk(L, 0, 0, 0, moonbr_io_write_cont);
jbe@145 672 }
jbe@145 673 }
jbe@145 674
jbe@145 675 static int moonbr_io_write_call(lua_State *L) {
jbe@145 676 lua_pushcfunction(L, moonbr_io_write_nb);
jbe@145 677 lua_insert(L, 3);
jbe@145 678 lua_pushvalue(L, 1);
jbe@145 679 lua_insert(L, 4);
jbe@145 680 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 681 if (lua_isnil(L, -2)) return 2;
jbe@145 682 if (!lua_tointeger(L, -2)) {
jbe@145 683 lua_pushvalue(L, 1);
jbe@145 684 return 1;
jbe@145 685 }
jbe@145 686 #if LUA_VERSION_NUM >= 503
jbe@145 687 return moonbr_io_write_cont(L, 0, 0);
jbe@145 688 #else
jbe@145 689 return moonbr_io_write_cont(L);
jbe@145 690 #endif
jbe@145 691 }
jbe@145 692
jbe@145 693 moonbr_io_yield_wrapper(moonbr_io_write_yield, moonbr_io_write_call);
jbe@145 694
jbe@145 695 static int moonbr_io_flush_call(lua_State *L) {
jbe@145 696 lua_pushcfunction(L, moonbr_io_flush_nb);
jbe@145 697 lua_insert(L, 3);
jbe@145 698 lua_pushvalue(L, 1);
jbe@145 699 lua_insert(L, 4);
jbe@145 700 lua_call(L, lua_gettop(L) - 3, 2);
jbe@145 701 if (lua_isnil(L, -2)) return 2;
jbe@145 702 if (!lua_tointeger(L, -2)) {
jbe@145 703 lua_pushvalue(L, 1);
jbe@145 704 return 1;
jbe@145 705 }
jbe@145 706 #if LUA_VERSION_NUM >= 503
jbe@145 707 return moonbr_io_write_cont(L, 0, 0);
jbe@145 708 #else
jbe@145 709 return moonbr_io_write_cont(L);
jbe@145 710 #endif
jbe@145 711 }
jbe@145 712
jbe@145 713 moonbr_io_yield_wrapper(moonbr_io_flush_yield, moonbr_io_flush_call);
jbe@145 714
jbe@88 715 static int moonbr_io_finish(lua_State *L) {
jbe@88 716 moonbr_io_handle_t *handle;
jbe@88 717 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 718 if (handle->closed) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@94 719 if (handle->finished) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@94 720 if (handle->writeleft) {
jbe@94 721 lua_pushcfunction(L, moonbr_io_flush);
jbe@94 722 lua_pushvalue(L, 1);
jbe@116 723 if (lua_pcall(L, 1, 2, 0)) {
jbe@116 724 handle->finished = 1;
jbe@116 725 lua_error(L);
jbe@116 726 }
jbe@94 727 if (!lua_toboolean(L, -2)) {
jbe@94 728 handle->finished = 1;
jbe@94 729 return 2;
jbe@88 730 }
jbe@94 731 }
jbe@94 732 handle->finished = 1;
jbe@260 733 #ifdef MOONBR_IO_USE_TLS
jbe@260 734 if ((handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) && !handle->tls) {
jbe@260 735 #else
jbe@107 736 if (handle->addrfam == AF_INET6 || handle->addrfam == AF_INET) {
jbe@260 737 #endif
jbe@257 738 if (shutdown(handle->fd, SHUT_WR)) moonbr_io_return_errmsg();
jbe@94 739 } else {
jbe@251 740 #ifdef MOONBR_IO_USE_TLS
jbe@260 741 if (handle->tls) {
jbe@260 742 int status;
jbe@260 743 if (moonbr_io_handle_set_nonblocking(L, handle, 1)) moonbr_io_return_errmsg();
jbe@260 744 do status = tls_close(handle->tls);
jbe@260 745 while (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT);
jbe@260 746 if (status) {
jbe@260 747 close(handle->fd);
jbe@260 748 handle->fd = -1;
jbe@260 749 lua_pushnil(L);
jbe@260 750 lua_pushstring(L, tls_error(handle->tls));
jbe@260 751 return 2;
jbe@260 752 }
jbe@260 753 }
jbe@251 754 #endif
jbe@94 755 if (close(handle->fd)) {
jbe@94 756 handle->fd = -1;
jbe@257 757 moonbr_io_return_errmsg();
jbe@94 758 }
jbe@94 759 handle->fd = -1; /* fake EOF on read */
jbe@88 760 }
jbe@88 761 lua_pushboolean(L, 1);
jbe@88 762 return 1;
jbe@88 763 }
jbe@88 764
jbe@261 765 static int moonbr_io_close_impl(lua_State *L, int nonblocking, int reset) {
jbe@83 766 moonbr_io_handle_t *handle;
jbe@83 767 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@94 768 if (handle->closed) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@259 769 if (!reset && handle->fd >= 0) {
jbe@87 770 if (handle->writeleft) {
jbe@261 771 lua_pushcfunction(L, nonblocking ? moonbr_io_flush_nb : moonbr_io_flush);
jbe@87 772 lua_pushvalue(L, 1);
jbe@116 773 if (lua_pcall(L, 1, 2, 0)) {
jbe@129 774 handle->closed = 1;
jbe@116 775 close(handle->fd);
jbe@116 776 handle->fd = -1;
jbe@116 777 lua_error(L);
jbe@116 778 }
jbe@261 779 if (!nonblocking) handle->closed = 1; /* TODO: handle nonblocking case */
jbe@87 780 if (!lua_toboolean(L, -2)) {
jbe@87 781 close(handle->fd);
jbe@87 782 handle->fd = -1;
jbe@87 783 return 2;
jbe@87 784 }
jbe@261 785 #if LUA_VERSION_NUM >= 503
jbe@261 786 if (nonblocking && lua_tointeger(L, -2)) {
jbe@261 787 #else
jbe@261 788 if (nonblocking && lua_tonumber(L, -2)) {
jbe@261 789 #endif
jbe@261 790 lua_pushliteral(L, "flush");
jbe@261 791 lua_pushvalue(L, -3);
jbe@261 792 return 2;
jbe@261 793 }
jbe@129 794 } else {
jbe@129 795 handle->closed = 1;
jbe@83 796 }
jbe@260 797 #ifdef MOONBR_IO_USE_TLS
jbe@260 798 if (handle->tls) {
jbe@260 799 int status;
jbe@261 800 if (moonbr_io_handle_set_nonblocking(L, handle, nonblocking)) moonbr_io_return_errmsg();
jbe@260 801 do status = tls_close(handle->tls);
jbe@261 802 while (!nonblocking && (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT));
jbe@261 803 if (status == TLS_WANT_POLLIN || status == TLS_WANT_POLLOUT) {
jbe@261 804 handle->tlsclosing = status; /* TODO: handle polling */
jbe@261 805 lua_pushliteral(L, "close");
jbe@261 806 return 1;
jbe@261 807 }
jbe@260 808 if (status) {
jbe@260 809 close(handle->fd);
jbe@260 810 handle->fd = -1;
jbe@260 811 lua_pushnil(L);
jbe@260 812 lua_pushstring(L, tls_error(handle->tls));
jbe@260 813 return 2;
jbe@260 814 }
jbe@260 815 }
jbe@260 816 #endif
jbe@256 817 if (moonbr_io_handle_set_linger(L, handle, -1)) {
jbe@257 818 moonbr_io_prepare_errmsg();
jbe@256 819 close(handle->fd);
jbe@256 820 handle->fd = -1;
jbe@257 821 moonbr_io_return_prepared_errmsg();
jbe@256 822 }
jbe@129 823 } else {
jbe@129 824 handle->closed = 1;
jbe@83 825 }
jbe@94 826 if (handle->fd >= 0) {
jbe@94 827 if (close(handle->fd)) {
jbe@94 828 handle->fd = -1;
jbe@257 829 moonbr_io_return_errmsg();
jbe@94 830 }
jbe@104 831 handle->fd = -1;
jbe@83 832 }
jbe@83 833 lua_pushboolean(L, 1);
jbe@83 834 return 1;
jbe@84 835
jbe@83 836 }
jbe@83 837
jbe@94 838 static int moonbr_io_close(lua_State *L) {
jbe@261 839 return moonbr_io_close_impl(L, 0, 0);
jbe@94 840 }
jbe@94 841
jbe@84 842 static int moonbr_io_reset(lua_State *L) {
jbe@261 843 return moonbr_io_close_impl(L, 0, 1);
jbe@84 844 }
jbe@84 845
jbe@108 846 static int moonbr_io_handlegc(lua_State *L) {
jbe@88 847 moonbr_io_handle_t *handle;
jbe@88 848 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 849 if (handle->fd >= 0) {
jbe@218 850 lua_pushcfunction(L, moonbr_io_reset);
jbe@88 851 lua_pushvalue(L, 1);
jbe@88 852 lua_pushinteger(L, 0);
jbe@88 853 lua_call(L, 2, 0);
jbe@88 854 }
jbe@246 855 #ifdef MOONBR_IO_USE_TLS
jbe@246 856 if (handle->tls) {
jbe@246 857 tls_free(handle->tls);
jbe@246 858 handle->tls = NULL;
jbe@246 859 }
jbe@246 860 if (handle->servertls) {
jbe@246 861 tls_free(handle->servertls);
jbe@246 862 handle->servertls = NULL;
jbe@246 863 }
jbe@246 864 #endif
jbe@88 865 return 0;
jbe@88 866 }
jbe@88 867
jbe@100 868 void moonbr_io_closehandle(lua_State *L, int idx, int reset) {
jbe@88 869 moonbr_io_handle_t *handle;
jbe@88 870 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@100 871 if (!handle->closed) {
jbe@100 872 lua_pushcfunction(L, reset ? moonbr_io_reset : moonbr_io_close);
jbe@100 873 lua_pushvalue(L, idx < 0 ? idx-1 : idx);
jbe@100 874 lua_call(L, 1, 0);
jbe@88 875 }
jbe@88 876 }
jbe@88 877
jbe@208 878 static int moonbr_io_pushhandle_impl(lua_State *L) {
jbe@208 879 int *fd;
jbe@79 880 moonbr_io_handle_t *handle;
jbe@107 881 struct sockaddr addr;
jbe@107 882 socklen_t addrlen;
jbe@208 883 fd = lua_touserdata(L, 1);
jbe@79 884 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@208 885 handle->fd = -1; /* avoid closing incomplete handle */
jbe@107 886 addrlen = sizeof(addr);
jbe@208 887 if (getsockname(*fd, &addr, &addrlen)) {
jbe@107 888 if (errno != ENOTSOCK) {
jbe@257 889 moonbr_io_prepare_errmsg();
jbe@107 890 luaL_error(L, "Unexpected error when examining socket: %s", errmsg);
jbe@107 891 }
jbe@107 892 handle->issock = 0;
jbe@107 893 } else {
jbe@107 894 handle->issock = 1;
jbe@107 895 handle->addrfam = addr.sa_family;
jbe@107 896 }
jbe@94 897 handle->finished = 0;
jbe@94 898 handle->closed = 0;
jbe@81 899 handle->nonblocking = -1;
jbe@95 900 handle->nopush = -1;
jbe@85 901 handle->readerr = 0;
jbe@105 902 handle->readbufin = 0;
jbe@105 903 handle->readbufout = 0;
jbe@81 904 handle->writeerr = 0;
jbe@81 905 handle->writeleft = 0;
jbe@132 906 handle->flushedleft = 0;
jbe@83 907 handle->writeqin = 0;
jbe@83 908 handle->writeqout = 0;
jbe@81 909 handle->writeqoff = 0;
jbe@103 910 handle->writebufin = 0;
jbe@103 911 handle->writebufout = 0;
jbe@246 912 #ifdef MOONBR_IO_USE_TLS
jbe@246 913 handle->tls = NULL;
jbe@246 914 handle->servertls = NULL;
jbe@250 915 handle->tlshandshake = 0;
jbe@261 916 handle->tlsclosing = 0;
jbe@246 917 #endif
jbe@208 918 handle->fd = *fd; /* required for set_linger call */
jbe@256 919 if (moonbr_io_handle_set_linger(L, handle, 0)) {
jbe@257 920 moonbr_io_prepare_errmsg();
jbe@256 921 handle->fd = -1;
jbe@256 922 luaL_error(L, "Unexpected error while setting SO_LINGER with setsockopt: %s", errmsg);
jbe@256 923 }
jbe@208 924 handle->fd = -1; /* avoid closing incomplete handle */
jbe@238 925 luaL_setmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 926 lua_newtable(L); // uservalue
jbe@81 927 lua_newtable(L);
jbe@103 928 lua_setfield(L, -2, "writequeue");
jbe@79 929 lua_newtable(L); // public
jbe@107 930 if (handle->addrfam == AF_INET6) {
jbe@107 931 struct sockaddr_in6 addr_in6;
jbe@107 932 char addrstrbuf[INET6_ADDRSTRLEN];
jbe@107 933 const char *addrstr;
jbe@107 934 addrlen = sizeof(addr_in6);
jbe@208 935 if (getsockname(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 936 moonbr_io_prepare_errmsg();
jbe@107 937 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 938 }
jbe@107 939 if (addrlen > sizeof(addr_in6)) {
jbe@107 940 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 941 }
jbe@107 942 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 943 if (!addrstr) {
jbe@257 944 moonbr_io_prepare_errmsg();
jbe@107 945 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 946 } else {
jbe@107 947 lua_pushstring(L, addrstr);
jbe@107 948 lua_setfield(L, -2, "local_ip6");
jbe@107 949 }
jbe@107 950 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 951 lua_setfield(L, -2, "local_tcpport");
jbe@208 952 if (getpeername(*fd, (struct sockaddr *)&addr_in6, &addrlen)) {
jbe@257 953 moonbr_io_prepare_errmsg();
jbe@107 954 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 955 }
jbe@107 956 if (addrlen > sizeof(addr_in6)) {
jbe@107 957 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 958 }
jbe@107 959 addrstr = inet_ntop(AF_INET6, addr_in6.sin6_addr.s6_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 960 if (!addrstr) {
jbe@257 961 moonbr_io_prepare_errmsg();
jbe@107 962 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 963 } else {
jbe@107 964 lua_pushstring(L, addrstr);
jbe@107 965 lua_setfield(L, -2, "remote_ip6");
jbe@107 966 }
jbe@107 967 lua_pushinteger(L, ntohs(addr_in6.sin6_port));
jbe@107 968 lua_setfield(L, -2, "remote_tcpport");
jbe@107 969 } else if (handle->addrfam == AF_INET) {
jbe@107 970 struct sockaddr_in addr_in;
jbe@107 971 char addrstrbuf[INET_ADDRSTRLEN];
jbe@107 972 const char *addrstr;
jbe@107 973 addrlen = sizeof(addr_in);
jbe@208 974 if (getsockname(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 975 moonbr_io_prepare_errmsg();
jbe@107 976 luaL_error(L, "Could not determine local IP address/port: %s", errmsg);
jbe@107 977 }
jbe@107 978 if (addrlen > sizeof(addr_in)) {
jbe@107 979 luaL_error(L, "Could not determine local IP address/port: buffer size exceeded");
jbe@107 980 }
jbe@107 981 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 982 if (!addrstr) {
jbe@257 983 moonbr_io_prepare_errmsg();
jbe@107 984 luaL_error(L, "Could not format local IP address: %s", errmsg);
jbe@107 985 } else {
jbe@107 986 lua_pushstring(L, addrstr);
jbe@107 987 lua_setfield(L, -2, "local_ip4");
jbe@107 988 }
jbe@107 989 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 990 lua_setfield(L, -2, "local_tcpport");
jbe@208 991 if (getpeername(*fd, (struct sockaddr *)&addr_in, &addrlen)) {
jbe@257 992 moonbr_io_prepare_errmsg();
jbe@107 993 luaL_error(L, "Could not determine remote IP address/port: %s", errmsg);
jbe@107 994 }
jbe@107 995 if (addrlen > sizeof(addr_in)) {
jbe@107 996 luaL_error(L, "Could not determine remote IP address/port: buffer size exceeded");
jbe@107 997 }
jbe@107 998 addrstr = inet_ntop(AF_INET, &addr_in.sin_addr.s_addr, addrstrbuf, sizeof(addrstrbuf));
jbe@107 999 if (!addrstr) {
jbe@257 1000 moonbr_io_prepare_errmsg();
jbe@107 1001 luaL_error(L, "Could not format remote IP address: %s", errmsg);
jbe@107 1002 } else {
jbe@107 1003 lua_pushstring(L, addrstr);
jbe@107 1004 lua_setfield(L, -2, "remote_ip4");
jbe@107 1005 }
jbe@107 1006 lua_pushinteger(L, ntohs(addr_in.sin_port));
jbe@107 1007 lua_setfield(L, -2, "remote_tcpport");
jbe@107 1008 }
jbe@238 1009 luaL_setmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 1010 lua_setfield(L, -2, "public");
jbe@79 1011 lua_setuservalue(L, -2);
jbe@208 1012 handle->fd = *fd;
jbe@208 1013 *fd = -1; /* closing is now handled by garbage collection */
jbe@208 1014 return 1;
jbe@208 1015 }
jbe@208 1016
jbe@208 1017 void moonbr_io_pushhandle(lua_State *L, int fd) {
jbe@208 1018 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1019 lua_pushlightuserdata(L, &fd);
jbe@208 1020 if (lua_pcall(L, 1, 1, 0)) {
jbe@251 1021 if (fd != -1) close(fd); // TODO: correct to close file descriptor here?
jbe@208 1022 lua_error(L);
jbe@208 1023 }
jbe@79 1024 }
jbe@79 1025
jbe@79 1026 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 1027 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1028 luaL_checkany(L, 2);
jbe@79 1029 lua_getuservalue(L, 1);
jbe@79 1030 lua_getfield(L, -1, "public");
jbe@79 1031 lua_pushvalue(L, 2);
jbe@79 1032 lua_gettable(L, -2);
jbe@79 1033 return 1;
jbe@79 1034 }
jbe@79 1035
jbe@79 1036 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 1037 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@205 1038 luaL_checkany(L, 2);
jbe@205 1039 luaL_checkany(L, 3);
jbe@79 1040 lua_getuservalue(L, 1);
jbe@79 1041 lua_getfield(L, -1, "public");
jbe@79 1042 lua_pushvalue(L, 2);
jbe@79 1043 lua_pushvalue(L, 3);
jbe@79 1044 lua_settable(L, -3);
jbe@79 1045 return 0;
jbe@79 1046 }
jbe@79 1047
jbe@111 1048 static int moonbr_io_localconnect_impl(lua_State *L, int nonblocking) {
jbe@111 1049 const char *path;
jbe@111 1050 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@111 1051 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@111 1052 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@111 1053 ) - 1; /* one byte for termination */
jbe@111 1054 int sock;
jbe@111 1055 path = luaL_checkstring(L, 1);
jbe@111 1056 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@111 1057 strcpy(sockaddr.sun_path, path);
jbe@111 1058 sock = socket(
jbe@111 1059 PF_LOCAL,
jbe@111 1060 SOCK_STREAM | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@111 1061 0
jbe@111 1062 );
jbe@257 1063 if (sock < 0) moonbr_io_return_errmsg();
jbe@111 1064 if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@111 1065 if (!nonblocking && errno == EINTR) {
jbe@257 1066 moonbr_io_prepare_errmsg();
jbe@111 1067 close(sock);
jbe@257 1068 moonbr_io_return_prepared_errmsg();
jbe@257 1069 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@111 1070 }
jbe@111 1071 moonbr_io_pushhandle(L, sock);
jbe@111 1072 return 1;
jbe@111 1073 }
jbe@111 1074
jbe@111 1075 static int moonbr_io_localconnect(lua_State *L) {
jbe@111 1076 return moonbr_io_localconnect_impl(L, 0);
jbe@111 1077 }
jbe@111 1078
jbe@111 1079 static int moonbr_io_localconnect_nb(lua_State *L) {
jbe@111 1080 return moonbr_io_localconnect_impl(L, 1);
jbe@111 1081 }
jbe@111 1082
jbe@99 1083 static int moonbr_io_tcpconnect_impl(lua_State *L, int nonblocking) {
jbe@98 1084 const char *host, *port;
jbe@98 1085 struct addrinfo hints = { 0, };
jbe@98 1086 struct addrinfo *res, *addrinfo;
jbe@98 1087 int errcode;
jbe@98 1088 int sock;
jbe@98 1089 host = luaL_checkstring(L, 1);
jbe@98 1090 port = luaL_checkstring(L, 2);
jbe@98 1091 hints.ai_family = AF_UNSPEC;
jbe@98 1092 hints.ai_socktype = SOCK_STREAM;
jbe@98 1093 hints.ai_protocol = IPPROTO_TCP;
jbe@98 1094 hints.ai_flags = AI_ADDRCONFIG;
jbe@98 1095 errcode = getaddrinfo(host, port, &hints, &res);
jbe@98 1096 if (errcode) {
jbe@102 1097 freeaddrinfo(res);
jbe@98 1098 if (errcode == EAI_SYSTEM) {
jbe@257 1099 moonbr_io_prepare_errmsg();
jbe@98 1100 lua_pushnil(L);
jbe@98 1101 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@98 1102 } else {
jbe@98 1103 lua_pushnil(L);
jbe@98 1104 lua_pushstring(L, gai_strerror(errcode));
jbe@98 1105 }
jbe@98 1106 return 2;
jbe@98 1107 }
jbe@98 1108 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1109 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@98 1110 }
jbe@98 1111 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1112 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@98 1113 }
jbe@98 1114 addrinfo = res;
jbe@98 1115 moonbr_io_tcpconnect_found:
jbe@99 1116 sock = socket(
jbe@134 1117 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@99 1118 addrinfo->ai_socktype | SOCK_CLOEXEC | (nonblocking ? SOCK_NONBLOCK : 0),
jbe@99 1119 addrinfo->ai_protocol
jbe@99 1120 );
jbe@98 1121 if (sock < 0) {
jbe@257 1122 moonbr_io_prepare_errmsg();
jbe@108 1123 freeaddrinfo(res);
jbe@257 1124 moonbr_io_return_prepared_errmsg();
jbe@98 1125 }
jbe@98 1126 if (connect(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@108 1127 freeaddrinfo(res);
jbe@99 1128 if (!nonblocking && errno == EINTR) {
jbe@257 1129 moonbr_io_prepare_errmsg();
jbe@99 1130 close(sock);
jbe@257 1131 moonbr_io_return_prepared_errmsg();
jbe@257 1132 } else if (!(nonblocking && (errno == EINPROGRESS || errno == EINTR))) moonbr_io_return_errmsg();
jbe@108 1133 } else {
jbe@108 1134 freeaddrinfo(res);
jbe@98 1135 }
jbe@107 1136 moonbr_io_pushhandle(L, sock);
jbe@98 1137 return 1;
jbe@98 1138 }
jbe@98 1139
jbe@99 1140 static int moonbr_io_tcpconnect(lua_State *L) {
jbe@99 1141 return moonbr_io_tcpconnect_impl(L, 0);
jbe@99 1142 }
jbe@99 1143
jbe@99 1144 static int moonbr_io_tcpconnect_nb(lua_State *L) {
jbe@99 1145 return moonbr_io_tcpconnect_impl(L, 1);
jbe@99 1146 }
jbe@99 1147
jbe@112 1148 static int moonbr_io_locallisten(lua_State *L) {
jbe@112 1149 moonbr_io_listener_t *listener;
jbe@112 1150 const char *path;
jbe@118 1151 struct stat sb;
jbe@112 1152 struct sockaddr_un sockaddr = { .sun_family = AF_LOCAL };
jbe@112 1153 const int path_maxlen = sizeof(struct sockaddr_un) - (
jbe@112 1154 (void *)sockaddr.sun_path - (void *)&sockaddr
jbe@112 1155 ) - 1; /* one byte for termination */
jbe@112 1156 int sock;
jbe@112 1157 path = luaL_checkstring(L, 1);
jbe@112 1158 if (strlen(path) > path_maxlen) luaL_error(L, "Path too long; only %i characters allowed", path_maxlen);
jbe@112 1159 strcpy(sockaddr.sun_path, path);
jbe@118 1160 if (stat(path, &sb) == 0) {
jbe@118 1161 if (S_ISSOCK(sb.st_mode)) unlink(path);
jbe@118 1162 }
jbe@112 1163 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1164 listener->fd = -1;
jbe@112 1165 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@112 1166 sock = socket(
jbe@112 1167 PF_LOCAL,
jbe@112 1168 SOCK_STREAM | SOCK_CLOEXEC,
jbe@112 1169 0
jbe@112 1170 );
jbe@257 1171 if (sock < 0) moonbr_io_return_errmsg();
jbe@112 1172 if (bind(sock, (struct sockaddr *)&sockaddr, sizeof(sockaddr))) {
jbe@257 1173 moonbr_io_prepare_errmsg();
jbe@112 1174 close(sock);
jbe@257 1175 moonbr_io_return_prepared_errmsg();
jbe@112 1176 }
jbe@112 1177 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1178 moonbr_io_prepare_errmsg();
jbe@112 1179 close(sock);
jbe@257 1180 moonbr_io_return_prepared_errmsg();
jbe@112 1181 }
jbe@112 1182 listener->fd = sock;
jbe@118 1183 listener->addrfam = AF_LOCAL;
jbe@112 1184 listener->nonblocking = -1;
jbe@112 1185 return 1;
jbe@112 1186 }
jbe@112 1187
jbe@108 1188 static int moonbr_io_tcplisten(lua_State *L) {
jbe@108 1189 moonbr_io_listener_t *listener;
jbe@108 1190 const char *host, *port;
jbe@108 1191 struct addrinfo hints = { 0, };
jbe@108 1192 struct addrinfo *res, *addrinfo;
jbe@108 1193 int errcode;
jbe@108 1194 int sock;
jbe@108 1195 host = luaL_optstring(L, 1, NULL);
jbe@108 1196 port = luaL_checkstring(L, 2);
jbe@108 1197 listener = lua_newuserdata(L, sizeof(moonbr_io_listener_t));
jbe@117 1198 listener->fd = -1;
jbe@108 1199 luaL_setmetatable(L, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1200 hints.ai_family = AF_UNSPEC;
jbe@108 1201 hints.ai_socktype = SOCK_STREAM;
jbe@108 1202 hints.ai_protocol = IPPROTO_TCP;
jbe@108 1203 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
jbe@108 1204 errcode = getaddrinfo(host, port, &hints, &res);
jbe@108 1205 if (errcode) {
jbe@108 1206 freeaddrinfo(res);
jbe@108 1207 if (errcode == EAI_SYSTEM) {
jbe@257 1208 moonbr_io_prepare_errmsg();
jbe@108 1209 lua_pushnil(L);
jbe@108 1210 lua_pushfstring(L, "%s: %s", gai_strerror(errcode), errmsg);
jbe@108 1211 } else {
jbe@108 1212 lua_pushnil(L);
jbe@108 1213 lua_pushstring(L, gai_strerror(errcode));
jbe@108 1214 }
jbe@108 1215 return 2;
jbe@108 1216 }
jbe@108 1217 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1218 if (addrinfo->ai_family == AF_INET6) goto moonbr_io_tcpconnect_found;
jbe@108 1219 }
jbe@108 1220 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
jbe@134 1221 if (addrinfo->ai_family == AF_INET) goto moonbr_io_tcpconnect_found;
jbe@108 1222 }
jbe@108 1223 addrinfo = res;
jbe@108 1224 moonbr_io_tcpconnect_found:
jbe@118 1225 listener->addrfam = addrinfo->ai_family;
jbe@108 1226 sock = socket(
jbe@134 1227 addrinfo->ai_family, /* NOTE: not correctly using PF_* but AF_* constants here */
jbe@108 1228 addrinfo->ai_socktype | SOCK_CLOEXEC,
jbe@108 1229 addrinfo->ai_protocol
jbe@108 1230 );
jbe@108 1231 if (sock < 0) {
jbe@257 1232 moonbr_io_prepare_errmsg();
jbe@108 1233 freeaddrinfo(res);
jbe@257 1234 moonbr_io_return_prepared_errmsg();
jbe@108 1235 }
jbe@120 1236 {
jbe@120 1237 static const int reuseval = 1;
jbe@120 1238 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval))) {
jbe@257 1239 moonbr_io_prepare_errmsg();
jbe@120 1240 freeaddrinfo(res);
jbe@120 1241 close(sock);
jbe@120 1242 lua_pushnil(L);
jbe@120 1243 lua_pushfstring(L, "Error while setting SO_REUSEADDR with setsockopt: %s", errmsg);
jbe@120 1244 return 2;
jbe@120 1245 }
jbe@120 1246 }
jbe@108 1247 if (bind(sock, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
jbe@257 1248 moonbr_io_prepare_errmsg();
jbe@108 1249 freeaddrinfo(res);
jbe@108 1250 close(sock);
jbe@257 1251 moonbr_io_return_prepared_errmsg();
jbe@108 1252 }
jbe@108 1253 freeaddrinfo(res);
jbe@108 1254 if (listen(sock, MOONBR_IO_LISTEN_BACKLOG)) {
jbe@257 1255 moonbr_io_prepare_errmsg();
jbe@108 1256 close(sock);
jbe@257 1257 moonbr_io_return_prepared_errmsg();
jbe@108 1258 }
jbe@108 1259 listener->fd = sock;
jbe@108 1260 listener->nonblocking = -1;
jbe@108 1261 return 1;
jbe@108 1262 }
jbe@108 1263
jbe@108 1264 static int moonbr_io_accept_impl(lua_State *L, int nonblocking) {
jbe@108 1265 moonbr_io_listener_t *listener;
jbe@108 1266 int fd;
jbe@108 1267 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1268 if (listener->fd < 0) luaL_error(L, "Attempt to use a closed listener");
jbe@108 1269 if (listener->nonblocking != nonblocking) {
jbe@108 1270 int flags;
jbe@108 1271 flags = fcntl(listener->fd, F_GETFL, 0);
jbe@108 1272 if (flags == -1) {
jbe@257 1273 moonbr_io_prepare_errmsg();
jbe@108 1274 close(listener->fd);
jbe@108 1275 listener->fd = -1;
jbe@108 1276 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1277 }
jbe@108 1278 if (nonblocking) flags |= O_NONBLOCK;
jbe@108 1279 else flags &= ~O_NONBLOCK;
jbe@108 1280 if (fcntl(listener->fd, F_SETFL, flags) == -1) {
jbe@257 1281 moonbr_io_prepare_errmsg();
jbe@108 1282 close(listener->fd);
jbe@108 1283 listener->fd = -1;
jbe@108 1284 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@108 1285 }
jbe@108 1286 listener->nonblocking = nonblocking;
jbe@108 1287 }
jbe@108 1288 while (1) {
jbe@214 1289 #if defined(__linux__) && !defined(_GNU_SOURCE)
jbe@215 1290 fd = accept(listener->fd, NULL, NULL);
jbe@214 1291 if (fd != -1) {
jbe@214 1292 if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) {
jbe@257 1293 moonbr_io_prepare_errmsg();
jbe@214 1294 close(listener->fd);
jbe@214 1295 listener->fd = -1;
jbe@214 1296 close(fd);
jbe@214 1297 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@214 1298 }
jbe@214 1299 }
jbe@214 1300 #else
jbe@108 1301 fd = accept4(listener->fd, NULL, NULL, SOCK_CLOEXEC);
jbe@214 1302 #endif
jbe@108 1303 if (fd < 0) {
jbe@108 1304 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@108 1305 lua_pushboolean(L, 0);
jbe@108 1306 lua_pushliteral(L, "No incoming connection pending");
jbe@108 1307 return 2;
jbe@257 1308 } else if (errno != EINTR) moonbr_io_return_errmsg();
jbe@108 1309 } else {
jbe@108 1310 moonbr_io_pushhandle(L, fd);
jbe@108 1311 return 1;
jbe@108 1312 }
jbe@108 1313 }
jbe@108 1314 }
jbe@108 1315
jbe@108 1316 static int moonbr_io_accept(lua_State *L) {
jbe@108 1317 return moonbr_io_accept_impl(L, 0);
jbe@108 1318 }
jbe@108 1319
jbe@108 1320 static int moonbr_io_accept_nb(lua_State *L) {
jbe@108 1321 return moonbr_io_accept_impl(L, 1);
jbe@108 1322 }
jbe@108 1323
jbe@108 1324 static int moonbr_io_unlisten(lua_State *L) {
jbe@108 1325 moonbr_io_listener_t *listener;
jbe@118 1326 struct sockaddr_un addr;
jbe@118 1327 socklen_t addrlen;
jbe@118 1328 struct stat sb;
jbe@108 1329 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 1330 if (listener->fd < 0) luaL_error(L, "Attempt to close a closed listener");
jbe@118 1331 addrlen = sizeof(addr);
jbe@118 1332 if (getsockname(listener->fd, (struct sockaddr *)&addr, &addrlen)) addrlen = 0;
jbe@108 1333 if (close(listener->fd)) {
jbe@257 1334 moonbr_io_prepare_errmsg();
jbe@108 1335 listener->fd = -1;
jbe@118 1336 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1337 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1338 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1339 }
jbe@118 1340 }
jbe@257 1341 moonbr_io_return_prepared_errmsg();
jbe@108 1342 }
jbe@108 1343 listener->fd = -1;
jbe@118 1344 if (addrlen && addrlen <= sizeof(addr)) {
jbe@118 1345 if (stat(addr.sun_path, &sb) == 0) {
jbe@118 1346 if (S_ISSOCK(sb.st_mode)) unlink(addr.sun_path);
jbe@118 1347 }
jbe@118 1348 }
jbe@108 1349 lua_pushboolean(L, 1);
jbe@108 1350 return 1;
jbe@108 1351 }
jbe@108 1352
jbe@108 1353 static int moonbr_io_listenergc(lua_State *L) {
jbe@108 1354 moonbr_io_listener_t *listener;
jbe@108 1355 listener = luaL_checkudata(L, 1, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@117 1356 if (listener->fd >= 0) close(listener->fd);
jbe@108 1357 listener->fd = -1;
jbe@108 1358 return 0;
jbe@108 1359 }
jbe@108 1360
jbe@205 1361 static int moonbr_io_exec(lua_State *L) {
jbe@205 1362 char **argv;
jbe@205 1363 int i, argc;
jbe@205 1364 int sockin[2], sockout[2], sockerr[2];
jbe@205 1365 volatile int errorcond = 0;
jbe@213 1366 volatile char errmsgbuf[MOONBR_IO_MAXSTRERRORLEN] = MOONBR_IO_STRERROR_R_MSG;
jbe@205 1367 moonbr_io_child_t *child;
jbe@205 1368 argc = lua_gettop(L);
jbe@205 1369 argv = lua_newuserdata(L, (argc + 1) * sizeof(char *));
jbe@205 1370 for (i=0; i<argc; i++) argv[i] = (char *)luaL_checkstring(L, i+1);
jbe@205 1371 argv[argc] = NULL;
jbe@208 1372 child = lua_newuserdata(L, sizeof(moonbr_io_child_t));
jbe@208 1373 child->pid = 0;
jbe@208 1374 lua_newtable(L);
jbe@208 1375 lua_setuservalue(L, -2);
jbe@238 1376 luaL_setmetatable(L, MOONBR_IO_CHILD_MT_REGKEY);
jbe@206 1377 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockin)) {
jbe@257 1378 moonbr_io_prepare_errmsg();
jbe@205 1379 lua_pushnil(L);
jbe@205 1380 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1381 return 2;
jbe@205 1382 }
jbe@206 1383 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockout)) {
jbe@257 1384 moonbr_io_prepare_errmsg();
jbe@205 1385 close(sockin[0]);
jbe@205 1386 close(sockin[1]);
jbe@205 1387 lua_pushnil(L);
jbe@205 1388 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1389 return 2;
jbe@205 1390 }
jbe@206 1391 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, sockerr)) {
jbe@257 1392 moonbr_io_prepare_errmsg();
jbe@205 1393 close(sockin[0]);
jbe@205 1394 close(sockin[1]);
jbe@205 1395 close(sockout[0]);
jbe@205 1396 close(sockout[1]);
jbe@205 1397 lua_pushnil(L);
jbe@205 1398 lua_pushfstring(L, "Could not create socket pair: %s", errmsg);
jbe@205 1399 return 2;
jbe@205 1400 }
jbe@205 1401 child->pid = vfork();
jbe@205 1402 if (child->pid == -1) {
jbe@257 1403 moonbr_io_prepare_errmsg();
jbe@205 1404 close(sockin[0]);
jbe@205 1405 close(sockin[1]);
jbe@205 1406 close(sockout[0]);
jbe@205 1407 close(sockout[1]);
jbe@205 1408 close(sockerr[0]);
jbe@205 1409 close(sockerr[1]);
jbe@205 1410 lua_pushnil(L);
jbe@205 1411 lua_pushfstring(L, "Could not fork: %s", errmsg);
jbe@205 1412 return 2;
jbe@205 1413 }
jbe@205 1414 if (!child->pid) {
jbe@208 1415 if (dup2(sockin[1], 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1416 if (dup2(sockout[1], 1) == -1) goto moonbr_io_exec_error1;
jbe@208 1417 if (dup2(sockerr[1], 2) == -1) goto moonbr_io_exec_error1;
jbe@232 1418 closefrom(3);
jbe@208 1419 if (fcntl(0, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1420 if (fcntl(1, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@208 1421 if (fcntl(2, F_SETFD, 0) == -1) goto moonbr_io_exec_error1;
jbe@205 1422 if (execvp(argv[0], argv)) {
jbe@205 1423 errorcond = 2;
jbe@205 1424 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@205 1425 _exit(0);
jbe@205 1426 }
jbe@208 1427 moonbr_io_exec_error1:
jbe@206 1428 errorcond = 1;
jbe@206 1429 strerror_r(errno, (char *)errmsgbuf, MOONBR_IO_MAXSTRERRORLEN);
jbe@206 1430 _exit(0);
jbe@205 1431 }
jbe@205 1432 close(sockin[1]);
jbe@205 1433 close(sockout[1]);
jbe@205 1434 close(sockerr[1]);
jbe@205 1435 if (errorcond) {
jbe@205 1436 int status;
jbe@205 1437 close(sockin[0]);
jbe@205 1438 close(sockout[0]);
jbe@205 1439 close(sockerr[0]);
jbe@205 1440 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1441 if (errno != EINTR) {
jbe@257 1442 moonbr_io_prepare_errmsg();
jbe@205 1443 luaL_error(L, "Error in waitpid call after unsuccessful exec: %s", errmsg);
jbe@205 1444 }
jbe@205 1445 }
jbe@208 1446 child->pid = 0;
jbe@205 1447 lua_pushnil(L);
jbe@205 1448 if (errorcond == 2) lua_pushfstring(L, "Could not execute: %s", errmsgbuf);
jbe@205 1449 else lua_pushfstring(L, "Error in fork: %s", errmsgbuf);
jbe@205 1450 return 2;
jbe@205 1451 }
jbe@208 1452 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1453 lua_pushlightuserdata(L, &sockin[0]);
jbe@208 1454 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1455 if (sockin[0] != -1) close(sockin[0]);
jbe@208 1456 close(sockout[0]);
jbe@208 1457 close(sockerr[0]);
jbe@208 1458 goto moonbr_io_exec_error2;
jbe@208 1459 }
jbe@205 1460 lua_setfield(L, -2, "stdin");
jbe@208 1461 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1462 lua_pushlightuserdata(L, &sockout[0]);
jbe@208 1463 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1464 if (sockout[0] != -1) close(sockout[0]);
jbe@208 1465 close(sockerr[0]);
jbe@208 1466 goto moonbr_io_exec_error2;
jbe@208 1467 }
jbe@205 1468 lua_setfield(L, -2, "stdout");
jbe@208 1469 lua_pushcfunction(L, moonbr_io_pushhandle_impl);
jbe@208 1470 lua_pushlightuserdata(L, &sockerr[0]);
jbe@208 1471 if (lua_pcall(L, 1, 1, 0)) {
jbe@208 1472 if (sockerr[0] != -1) close(sockerr[0]);
jbe@208 1473 goto moonbr_io_exec_error2;
jbe@208 1474 }
jbe@205 1475 lua_setfield(L, -2, "stderr");
jbe@205 1476 return 1;
jbe@208 1477 moonbr_io_exec_error2:
jbe@208 1478 {
jbe@208 1479 int status;
jbe@208 1480 while (waitpid(child->pid, &status, 0) == -1) {
jbe@208 1481 if (errno != EINTR) {
jbe@257 1482 moonbr_io_prepare_errmsg();
jbe@208 1483 luaL_error(L, "Error in waitpid call after error creating socket handles: %s", errmsg);
jbe@208 1484 }
jbe@208 1485 }
jbe@208 1486 }
jbe@208 1487 child->pid = 0;
jbe@208 1488 return lua_error(L);
jbe@205 1489 }
jbe@205 1490
jbe@205 1491 static int moonbr_io_childindex(lua_State *L) {
jbe@205 1492 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1493 luaL_checkany(L, 2);
jbe@205 1494 lua_getuservalue(L, 1);
jbe@205 1495 lua_pushvalue(L, 2);
jbe@205 1496 lua_gettable(L, -2);
jbe@205 1497 if (lua_isnil(L, -1)) {
jbe@205 1498 luaL_getmetatable(L, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 1499 lua_pushvalue(L, 2);
jbe@205 1500 lua_gettable(L, -2);
jbe@205 1501 }
jbe@205 1502 return 1;
jbe@205 1503 }
jbe@205 1504
jbe@205 1505 static int moonbr_io_childnewindex(lua_State *L) {
jbe@205 1506 luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1507 luaL_checkany(L, 2);
jbe@205 1508 luaL_checkany(L, 3);
jbe@205 1509 lua_getuservalue(L, 1);
jbe@205 1510 lua_pushvalue(L, 2);
jbe@205 1511 lua_pushvalue(L, 3);
jbe@205 1512 lua_settable(L, -3);
jbe@205 1513 return 0;
jbe@205 1514 }
jbe@205 1515
jbe@205 1516 static int moonbr_io_childgc(lua_State *L) {
jbe@205 1517 moonbr_io_child_t *child;
jbe@205 1518 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1519 if (child->pid) {
jbe@205 1520 int status;
jbe@205 1521 if (kill(child->pid, SIGKILL)) {
jbe@257 1522 moonbr_io_prepare_errmsg();
jbe@205 1523 luaL_error(L, "Error in kill call during garbage collection: %s", errmsg);
jbe@205 1524 }
jbe@205 1525 while (waitpid(child->pid, &status, 0) == -1) {
jbe@205 1526 if (errno != EINTR) {
jbe@257 1527 moonbr_io_prepare_errmsg();
jbe@205 1528 luaL_error(L, "Error in waitpid call during garbage collection: %s", errmsg);
jbe@205 1529 }
jbe@205 1530 }
jbe@205 1531 }
jbe@205 1532 return 0;
jbe@205 1533 }
jbe@205 1534
jbe@205 1535 static int moonbr_io_kill(lua_State *L) {
jbe@205 1536 moonbr_io_child_t *child;
jbe@205 1537 int sig;
jbe@205 1538 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1539 sig = luaL_optinteger(L, 2, SIGTERM);
jbe@205 1540 if (!child->pid) luaL_error(L, "Attempt to kill an already collected child process");
jbe@205 1541 if (kill(child->pid, sig)) {
jbe@257 1542 moonbr_io_prepare_errmsg();
jbe@205 1543 luaL_error(L, "Error in kill call: %s", errmsg);
jbe@205 1544 }
jbe@205 1545 lua_settop(L, 1);
jbe@205 1546 return 1;
jbe@205 1547 }
jbe@205 1548
jbe@205 1549 static int moonbr_io_wait_impl(lua_State *L, int nonblocking) {
jbe@205 1550 moonbr_io_child_t *child;
jbe@205 1551 pid_t waitedpid;
jbe@205 1552 int status;
jbe@205 1553 child = luaL_checkudata(L, 1, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 1554 if (!child->pid) luaL_error(L, "Attempt to wait for an already collected child process");
jbe@205 1555 while ((waitedpid = waitpid(child->pid, &status, nonblocking ? WNOHANG : 0)) == -1) {
jbe@205 1556 if (errno != EINTR) {
jbe@257 1557 moonbr_io_prepare_errmsg();
jbe@205 1558 luaL_error(L, "Error in waitpid call: %s", errmsg);
jbe@205 1559 }
jbe@205 1560 }
jbe@205 1561 if (!waitedpid) {
jbe@219 1562 lua_pushboolean(L, 0);
jbe@219 1563 lua_pushliteral(L, "Process is still running");
jbe@219 1564 return 2;
jbe@205 1565 } else {
jbe@205 1566 child->pid = 0;
jbe@205 1567 if (WIFEXITED(status)) {
jbe@205 1568 lua_pushinteger(L, WEXITSTATUS(status));
jbe@205 1569 } else if (WIFSIGNALED(status)) {
jbe@205 1570 lua_pushinteger(L, -WTERMSIG(status));
jbe@205 1571 } else {
jbe@205 1572 luaL_error(L, "Unexpected status value returned by waitpid call");
jbe@205 1573 }
jbe@219 1574 return 1;
jbe@205 1575 }
jbe@205 1576 }
jbe@205 1577
jbe@205 1578 static int moonbr_io_wait(lua_State *L) {
jbe@205 1579 return moonbr_io_wait_impl(L, 0);
jbe@205 1580 }
jbe@205 1581
jbe@205 1582 static int moonbr_io_wait_nb(lua_State *L) {
jbe@205 1583 return moonbr_io_wait_impl(L, 1);
jbe@205 1584 }
jbe@205 1585
jbe@205 1586 #if LUA_VERSION_NUM >= 503
jbe@205 1587 static int moonbr_io_wait_cont(lua_State *L, int status, lua_KContext ctx) {
jbe@205 1588 #else
jbe@205 1589 static int moonbr_io_wait_cont(lua_State *L) {
jbe@205 1590 #endif
jbe@205 1591 #if !(LUA_VERSION_NUM >= 503)
jbe@205 1592 int ctx = 0;
jbe@205 1593 lua_getctx(L, &ctx);
jbe@205 1594 #endif
jbe@205 1595 while (1) {
jbe@205 1596 lua_pushcfunction(L, moonbr_io_wait_nb);
jbe@205 1597 lua_pushvalue(L, 1);
jbe@205 1598 lua_call(L, 1, 1);
jbe@205 1599 if (!lua_isnil(L, -1)) break;
jbe@205 1600 lua_pushvalue(L, 2);
jbe@205 1601 lua_callk(L, 0, 0, ctx, moonbr_io_wait_cont);
jbe@205 1602 }
jbe@205 1603 return 1;
jbe@205 1604 }
jbe@205 1605
jbe@205 1606 static int moonbr_io_wait_call(lua_State *L) {
jbe@205 1607 lua_settop(L, 2);
jbe@205 1608 #if LUA_VERSION_NUM >= 503
jbe@205 1609 return moonbr_io_wait_cont(L, 0, 0);
jbe@205 1610 #else
jbe@205 1611 return moonbr_io_wait_cont(L);
jbe@205 1612 #endif
jbe@205 1613 }
jbe@205 1614
jbe@205 1615 moonbr_io_yield_wrapper(moonbr_io_wait_yield, moonbr_io_wait_call);
jbe@205 1616
jbe@266 1617 static void moonbr_io_signalhandler(int sig) {
jbe@266 1618 int errno2 = errno;
jbe@278 1619 char buf[1] = {'.'};
jbe@278 1620 write(moonbr_io_signalfd_write(sig), buf, 1);
jbe@266 1621 errno = errno2;
jbe@266 1622 }
jbe@266 1623
jbe@266 1624 static int moonbr_io_signalsocket(lua_State *L) {
jbe@278 1625 int sig, fd;
jbe@278 1626 if (lua_type(L, 1) == LUA_TSTRING) {
jbe@278 1627 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALS_REGKEY);
jbe@278 1628 lua_pushvalue(L, 1);
jbe@278 1629 lua_gettable(L, -2);
jbe@278 1630 sig = lua_tointeger(L, -1);
jbe@278 1631 if (!sig) {
jbe@278 1632 lua_pushvalue(L, 1);
jbe@278 1633 luaL_error(L, "Unknown signal \"%s\"", lua_tostring(L, 1));
jbe@266 1634 }
jbe@278 1635 } else {
jbe@278 1636 sig = luaL_checkinteger(L, 1);
jbe@266 1637 }
jbe@278 1638 if (sig < 1 || sig > MOONBR_IO_MAXSIGNUM) {
jbe@278 1639 luaL_error(L, "Signal number %i out of range", sig);
jbe@278 1640 }
jbe@278 1641 if (moonbr_io_signalfd_read(sig) < 0) {
jbe@278 1642 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, moonbr_io_signalfds+2*sig)) {
jbe@278 1643 luaL_error(L, "Could not create socket pair for signal queueing");
jbe@271 1644 }
jbe@266 1645 }
jbe@280 1646 errno = 0;
jbe@280 1647 signal(sig, moonbr_io_signalhandler);
jbe@280 1648 if (errno) luaL_error(L, "Could not install signal handler (invalid signal number %i?)", sig);
jbe@280 1649 lua_getfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALSOCKETS_REGKEY);
jbe@280 1650 lua_pushinteger(L, sig);
jbe@280 1651 lua_gettable(L, -2);
jbe@280 1652 if (!lua_isnil(L, -1)) return 1;
jbe@280 1653 fd = dup(moonbr_io_signalfd_read(sig)); /* avoid close on Lua error */
jbe@278 1654 if (fd < 0) luaL_error(L, "Could not create duplicated file descriptor for signal socket");
jbe@278 1655 moonbr_io_pushhandle(L, fd);
jbe@280 1656 lua_pushinteger(L, sig);
jbe@280 1657 lua_pushvalue(L, -2);
jbe@280 1658 lua_settable(L, -5); /* store reference to signal socket in cache table */
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@278 2038 {
jbe@278 2039 int i;
jbe@278 2040 for (i=0; i<=MOONBR_IO_MAXSIGNUM; i++) {
jbe@278 2041 moonbr_io_signalfd_read(i) = -1;
jbe@278 2042 moonbr_io_signalfd_write(i) = -1;
jbe@278 2043 }
jbe@278 2044 }
jbe@113 2045
jbe@80 2046 lua_newtable(L); // module
jbe@80 2047
jbe@79 2048 lua_newtable(L); // public metatable
jbe@79 2049 lua_newtable(L); // handle methods
jbe@79 2050 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 2051 lua_pushvalue(L, -1);
jbe@146 2052 lua_setfield(L, -4, "handle_pt");
jbe@79 2053 lua_setfield(L, -2, "__index");
jbe@79 2054 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 2055
jbe@79 2056 lua_newtable(L); // handle metatable
jbe@79 2057 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@146 2058 lua_pushvalue(L, -1);
jbe@146 2059 lua_setfield(L, -3, "handle_mt");
jbe@79 2060 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 2061
jbe@108 2062 lua_newtable(L); // listener metatable
jbe@108 2063 luaL_setfuncs(L, moonbr_io_listener_metamethods, 0);
jbe@108 2064 lua_newtable(L); // listener methods
jbe@108 2065 luaL_setfuncs(L, moonbr_io_listener_methods, 0);
jbe@108 2066 lua_pushvalue(L, -1);
jbe@146 2067 lua_setfield(L, -4, "listener_pt");
jbe@108 2068 lua_setfield(L, -2, "__index");
jbe@146 2069 lua_pushvalue(L, -1);
jbe@146 2070 lua_setfield(L, -3, "listener_mt");
jbe@108 2071 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_LISTENER_MT_REGKEY);
jbe@108 2072
jbe@205 2073 lua_newtable(L); // child methods
jbe@205 2074 luaL_setfuncs(L, moonbr_io_child_methods, 0);
jbe@205 2075 lua_pushvalue(L, -1);
jbe@205 2076 lua_setfield(L, -3, "child_pt");
jbe@205 2077 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_PT_REGKEY);
jbe@205 2078 lua_newtable(L); // child metatable
jbe@205 2079 luaL_setfuncs(L, moonbr_io_child_metamethods, 0);
jbe@205 2080 lua_pushvalue(L, -1);
jbe@205 2081 lua_setfield(L, -3, "child_mt");
jbe@205 2082 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_CHILD_MT_REGKEY);
jbe@205 2083
jbe@243 2084 #ifdef MOONBR_IO_USE_TLS
jbe@243 2085 if(tls_init()) {
jbe@243 2086 return luaL_error(L, "Could not initialize TLS library");
jbe@243 2087 }
jbe@243 2088 lua_newtable(L); // tlsconf metatable
jbe@243 2089 luaL_setfuncs(L, moonbr_io_tlsconf_metamethods, 0);
jbe@243 2090 lua_pushvalue(L, -1);
jbe@243 2091 lua_setfield(L, -3, "tlsconf_mt");
jbe@243 2092 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_TLSCONF_MT_REGKEY);
jbe@243 2093 #endif
jbe@243 2094
jbe@205 2095 moonbr_io_pushhandle(L, 0);
jbe@205 2096 lua_setfield(L, -2, "stdin");
jbe@205 2097 moonbr_io_pushhandle(L, 1);
jbe@205 2098 lua_setfield(L, -2, "stdout");
jbe@205 2099 moonbr_io_pushhandle(L, 2);
jbe@205 2100 lua_setfield(L, -2, "stderr");
jbe@270 2101
jbe@270 2102 lua_newtable(L); // signal numbers
jbe@270 2103 lua_pushinteger(L, SIGHUP); lua_setfield(L, -2, "HUP");
jbe@270 2104 lua_pushinteger(L, SIGINT); lua_setfield(L, -2, "INT");
jbe@270 2105 lua_pushinteger(L, SIGQUIT); lua_setfield(L, -2, "QUIT");
jbe@270 2106 lua_pushinteger(L, SIGABRT); lua_setfield(L, -2, "ABRT");
jbe@270 2107 lua_pushinteger(L, SIGPIPE); lua_setfield(L, -2, "PIPE");
jbe@270 2108 lua_pushinteger(L, SIGALRM); lua_setfield(L, -2, "ALRM");
jbe@270 2109 lua_pushinteger(L, SIGTERM); lua_setfield(L, -2, "TERM");
jbe@270 2110 lua_pushinteger(L, SIGTSTP); lua_setfield(L, -2, "TSTP");
jbe@270 2111 lua_pushinteger(L, SIGCONT); lua_setfield(L, -2, "CONT");
jbe@270 2112 lua_pushinteger(L, SIGVTALRM); lua_setfield(L, -2, "VTALRM");
jbe@272 2113 #ifdef SIGINFO
jbe@270 2114 lua_pushinteger(L, SIGINFO); lua_setfield(L, -2, "INFO");
jbe@272 2115 #endif
jbe@270 2116 lua_pushinteger(L, SIGUSR1); lua_setfield(L, -2, "USR1");
jbe@270 2117 lua_pushinteger(L, SIGUSR2); lua_setfield(L, -2, "USR2");
jbe@271 2118 lua_pushvalue(L, -1);
jbe@271 2119 lua_setfield(L, -3, "signals");
jbe@271 2120 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALS_REGKEY);
jbe@280 2121
jbe@280 2122 lua_newtable(L); // signal sockets
jbe@280 2123 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_SIGNALSOCKETS_REGKEY);
jbe@205 2124
jbe@79 2125 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 2126 return 1;
jbe@79 2127
jbe@79 2128 }
jbe@79 2129

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