1 #include "first.h" 2 3 #include "network.h" 4 #include "base.h" 5 #include "fdevent.h" 6 #include "log.h" 7 #include "connections.h" 8 #include "plugin.h" 9 #include "sock_addr.h" 10 11 #include "network_write.h" 12 #include "sys-socket.h" 13 14 #include <sys/types.h> 15 #include <sys/stat.h> 16 #include <sys/time.h> 17 18 #include <errno.h> 19 #include <fcntl.h> 20 #include <unistd.h> 21 #include <string.h> 22 #include <stdlib.h> 23 24 void 25 network_accept_tcp_nagle_disable (const int fd) 26 { 27 static int noinherit_tcpnodelay = -1; 28 int opt; 29 30 if (!noinherit_tcpnodelay) /* TCP_NODELAY inherited from listen socket */ 31 return; 32 33 if (noinherit_tcpnodelay < 0) { 34 socklen_t optlen = sizeof(opt); 35 if (0 == getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, &optlen)) { 36 noinherit_tcpnodelay = !opt; 37 if (opt) /* TCP_NODELAY inherited from listen socket */ 38 return; 39 } 40 } 41 42 opt = 1; 43 (void)setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)); 44 } 45 46 static handler_t network_server_handle_fdevent(void *context, int revents) { 47 server_socket * const srv_socket = (server_socket *)context; 48 server * const srv = srv_socket->srv; 49 connection *con; 50 int loops; 51 52 if (0 == (revents & FDEVENT_IN)) { 53 log_error(srv->errh, __FILE__, __LINE__, 54 "strange event for server socket %d %d", srv_socket->fd, revents); 55 return HANDLER_ERROR; 56 } 57 58 /* accept()s at most 100 connections directly 59 * 60 * we jump out after 100 to give the waiting connections a chance */ 61 if (srv->conns.used >= srv->max_conns) return HANDLER_GO_ON; 62 loops = (int)(srv->max_conns - srv->conns.used + 1); 63 if (loops > 100) loops = 101; 64 65 while (--loops && NULL != (con = connection_accept(srv, srv_socket))) 66 connection_state_machine(con); 67 68 return HANDLER_GO_ON; 69 } 70 71 static void network_host_normalize_addr_str(buffer *host, sock_addr *addr) { 72 buffer_clear(host); 73 sock_addr_stringify_append_buffer(host, addr); 74 } 75 76 static int network_host_parse_addr(server *srv, sock_addr *addr, socklen_t *addr_len, buffer *host, int use_ipv6) { 77 char *h; 78 char *colon = NULL; 79 const char *chost; 80 sa_family_t family = use_ipv6 ? AF_INET6 : AF_INET; 81 unsigned int port = srv->srvconf.port; 82 if (buffer_string_is_empty(host)) { 83 log_error(srv->errh, __FILE__, __LINE__, 84 "value of $SERVER[\"socket\"] must not be empty"); 85 return -1; 86 } 87 h = host->ptr; 88 if (h[0] == '/') { 89 #ifdef HAVE_SYS_UN_H 90 return (1 == 91 sock_addr_from_str_hints(addr,addr_len,h,AF_UNIX,0,srv->errh)) 92 ? 0 93 : -1; 94 #else 95 log_error(srv, __FILE__, __LINE__, 96 "ERROR: Unix Domain sockets are not supported."); 97 return -1; 98 #endif 99 } 100 buffer * const tb = srv->tmp_buf; 101 buffer_copy_buffer(tb, host); 102 h = tb->ptr; 103 if (h[0] == '[') { 104 family = AF_INET6; 105 if ((h = strchr(h, ']'))) { 106 *h++ = '\0'; 107 if (*h == ':') colon = h; 108 } /*(else should not happen; validated in configparser.y)*/ 109 h = tb->ptr+1; 110 } 111 else { 112 colon = strrchr(h, ':'); 113 } 114 if (colon) { 115 *colon++ = '\0'; 116 port = (unsigned int)strtol(colon, NULL, 10); 117 if (port == 0 || port > 65535) { 118 log_error(srv->errh, __FILE__, __LINE__, 119 "port not set or out of range: %u", port); 120 return -1; 121 } 122 } 123 chost = *h ? h : family == AF_INET ? "0.0.0.0" : "::"; 124 if (1 != 125 sock_addr_from_str_hints(addr,addr_len,chost,family,port,srv->errh)) { 126 return -1; 127 } 128 return 0; 129 } 130 131 static void network_srv_sockets_append(server *srv, server_socket *srv_socket) { 132 if (srv->srv_sockets.used == srv->srv_sockets.size) { 133 srv->srv_sockets.size += 4; 134 srv->srv_sockets.ptr = realloc(srv->srv_sockets.ptr, srv->srv_sockets.size * sizeof(server_socket*)); 135 force_assert(NULL != srv->srv_sockets.ptr); 136 } 137 138 srv->srv_sockets.ptr[srv->srv_sockets.used++] = srv_socket; 139 } 140 141 typedef struct { 142 /* global or per-socket config; not patched per connection */ 143 int listen_backlog; 144 unsigned char ssl_enabled; 145 unsigned char use_ipv6; 146 unsigned char set_v6only; /* set_v6only is only a temporary option */ 147 unsigned char defer_accept; 148 int8_t v4mapped; 149 const buffer *socket_perms; 150 const buffer *bsd_accept_filter; 151 } network_socket_config; 152 153 typedef struct { 154 PLUGIN_DATA; 155 network_socket_config defaults; 156 network_socket_config conf; 157 } network_plugin_data; 158 159 static void network_merge_config_cpv(network_socket_config * const pconf, const config_plugin_value_t * const cpv) { 160 switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */ 161 case 0: /* ssl.engine */ 162 pconf->ssl_enabled = (0 != cpv->v.u); 163 break; 164 case 1: /* server.listen-backlog */ 165 pconf->listen_backlog = (int)cpv->v.u; 166 break; 167 case 2: /* server.socket-perms */ 168 pconf->socket_perms = cpv->v.b; 169 break; 170 case 3: /* server.bsd-accept-filter */ 171 pconf->bsd_accept_filter = cpv->v.b; 172 break; 173 case 4: /* server.defer-accept */ 174 pconf->defer_accept = (0 != cpv->v.u); 175 break; 176 case 5: /* server.use-ipv6 */ 177 pconf->use_ipv6 = (0 != cpv->v.u); 178 break; 179 case 6: /* server.set-v6only */ 180 pconf->set_v6only = (0 != cpv->v.u); 181 break; 182 case 7: /* server.v4mapped */ 183 pconf->v4mapped = (0 != cpv->v.u); 184 break; 185 default:/* should not happen */ 186 return; 187 } 188 } 189 190 static void network_merge_config(network_socket_config * const pconf, const config_plugin_value_t *cpv) { 191 do { 192 network_merge_config_cpv(pconf, cpv); 193 } while ((++cpv)->k_id != -1); 194 } 195 196 static int network_server_init(server *srv, network_socket_config *s, buffer *host_token, size_t sidx, int stdin_fd) { 197 server_socket *srv_socket; 198 const char *host; 199 socklen_t addr_len = sizeof(sock_addr); 200 sock_addr addr; 201 int family = 0; 202 int set_v6only = 0; 203 204 if (buffer_string_is_empty(host_token)) { 205 log_error(srv->errh, __FILE__, __LINE__, 206 "value of $SERVER[\"socket\"] must not be empty"); 207 return -1; 208 } 209 210 /* check if we already know this socket, and if yes, don't init it 211 * (optimization: check strings here to filter out exact matches; 212 * binary addresses are matched further below) */ 213 for (uint32_t i = 0; i < srv->srv_sockets.used; ++i) { 214 if (buffer_is_equal(srv->srv_sockets.ptr[i]->srv_token, host_token)) { 215 return 0; 216 } 217 } 218 219 host = host_token->ptr; 220 if ((s->use_ipv6 && (*host == '\0' || *host == ':')) || (host[0] == '[' && host[1] == ']')) { 221 log_error(srv->errh, __FILE__, __LINE__, 222 "warning: please use server.use-ipv6 only for hostnames, " 223 "not without server.bind / empty address; your config will " 224 "break if the kernel default for IPV6_V6ONLY changes"); 225 } 226 if (*host == '[') s->use_ipv6 = 1; 227 228 memset(&addr, 0, sizeof(addr)); 229 if (-1 != stdin_fd) { 230 if (-1 == getsockname(stdin_fd, (struct sockaddr *)&addr, &addr_len)) { 231 log_perror(srv->errh, __FILE__, __LINE__, "getsockname()"); 232 return -1; 233 } 234 } else if (0 != network_host_parse_addr(srv, &addr, &addr_len, host_token, s->use_ipv6)) { 235 return -1; 236 } 237 238 family = sock_addr_get_family(&addr); 239 240 #ifdef HAVE_IPV6 241 if (*host != '\0' && AF_INET6 == family) { 242 if (s->set_v6only) { 243 set_v6only = 1; 244 } else { 245 log_error(srv->errh, __FILE__, __LINE__, 246 "warning: server.set-v6only will be removed soon, " 247 "update your config to have different sockets for ipv4 and ipv6"); 248 } 249 } 250 if (AF_INET6 == family && -1 != s->v4mapped) { /*(configured; -1 is unset)*/ 251 set_v6only = (s->v4mapped ? -1 : 1); 252 } 253 #endif 254 255 network_host_normalize_addr_str(host_token, &addr); 256 host = host_token->ptr; 257 258 if (srv->srvconf.preflight_check) { 259 return 0; 260 } 261 262 /* check if we already know this socket (after potential DNS resolution), and if yes, don't init it */ 263 for (uint32_t i = 0; i < srv->srv_sockets.used; ++i) { 264 if (0 == memcmp(&srv->srv_sockets.ptr[i]->addr, &addr, sizeof(addr))) { 265 return 0; 266 } 267 } 268 269 srv_socket = calloc(1, sizeof(*srv_socket)); 270 force_assert(NULL != srv_socket); 271 memcpy(&srv_socket->addr, &addr, addr_len); 272 srv_socket->fd = -1; 273 srv_socket->sidx = sidx; 274 srv_socket->is_ssl = s->ssl_enabled; 275 srv_socket->srv = srv; 276 srv_socket->srv_token = buffer_init_buffer(host_token); 277 278 network_srv_sockets_append(srv, srv_socket); 279 280 if (srv->sockets_disabled) { /* lighttpd -1 (one-shot mode) */ 281 return 0; 282 } 283 284 if (srv->srvconf.systemd_socket_activation) { 285 for (uint32_t i = 0; i < srv->srv_sockets_inherited.used; ++i) { 286 if (0 != memcmp(&srv->srv_sockets_inherited.ptr[i]->addr, &srv_socket->addr, addr_len)) continue; 287 if ((unsigned short)~0u == srv->srv_sockets_inherited.ptr[i]->sidx) { 288 srv->srv_sockets_inherited.ptr[i]->sidx = sidx; 289 } 290 stdin_fd = srv->srv_sockets_inherited.ptr[i]->fd; 291 break; 292 } 293 } 294 295 if (-1 != stdin_fd) { 296 srv_socket->fd = stdin_fd; 297 if (-1 == fdevent_fcntl_set_nb_cloexec(stdin_fd)) { 298 log_perror(srv->errh, __FILE__, __LINE__, "fcntl"); 299 return -1; 300 } 301 } else 302 #ifdef HAVE_SYS_UN_H 303 if (AF_UNIX == family) { 304 /* check if the socket exists and try to connect to it. */ 305 force_assert(host); /*(static analysis hint)*/ 306 if (-1 == (srv_socket->fd = fdevent_socket_cloexec(AF_UNIX, SOCK_STREAM, 0))) { 307 log_perror(srv->errh, __FILE__, __LINE__, "socket"); 308 return -1; 309 } 310 if (0 == connect(srv_socket->fd, (struct sockaddr *) &(srv_socket->addr), addr_len)) { 311 log_error(srv->errh, __FILE__, __LINE__, 312 "server socket is still in use: %s", host); 313 return -1; 314 } 315 316 /* connect failed */ 317 switch(errno) { 318 case ECONNREFUSED: 319 unlink(host); 320 break; 321 case ENOENT: 322 break; 323 default: 324 log_perror(srv->errh, __FILE__, __LINE__, 325 "testing socket failed: %s", host); 326 return -1; 327 } 328 329 if (-1 == fdevent_fcntl_set_nb(srv_socket->fd)) { 330 log_perror(srv->errh, __FILE__, __LINE__, "fcntl"); 331 return -1; 332 } 333 } else 334 #endif 335 { 336 if (-1 == (srv_socket->fd = fdevent_socket_nb_cloexec(family, SOCK_STREAM, IPPROTO_TCP))) { 337 log_perror(srv->errh, __FILE__, __LINE__, "socket"); 338 return -1; 339 } 340 341 #ifdef HAVE_IPV6 342 if (set_v6only) { 343 int val = (set_v6only > 0); 344 if (-1 == setsockopt(srv_socket->fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof(val))) { 345 log_perror(srv->errh, __FILE__, __LINE__, "setsockopt(IPV6_V6ONLY)"); 346 return -1; 347 } 348 } 349 #endif 350 } 351 352 /* */ 353 srv->cur_fds = srv_socket->fd; 354 355 if (fdevent_set_so_reuseaddr(srv_socket->fd, 1) < 0) { 356 log_perror(srv->errh, __FILE__, __LINE__, "setsockopt(SO_REUSEADDR)"); 357 return -1; 358 } 359 360 if (family != AF_UNIX) { 361 if (fdevent_set_tcp_nodelay(srv_socket->fd, 1) < 0) { 362 log_perror(srv->errh, __FILE__, __LINE__, "setsockopt(TCP_NODELAY)"); 363 return -1; 364 } 365 } 366 367 if (-1 != stdin_fd) { } else 368 if (0 != bind(srv_socket->fd, (struct sockaddr *) &(srv_socket->addr), addr_len)) { 369 log_perror(srv->errh, __FILE__, __LINE__, 370 "can't bind to socket: %s", host); 371 return -1; 372 } 373 374 if (-1 != stdin_fd) { } else 375 if (AF_UNIX == family && !buffer_string_is_empty(s->socket_perms)) { 376 mode_t m = 0; 377 for (char *str = s->socket_perms->ptr; *str; ++str) { 378 m <<= 3; 379 m |= (*str - '0'); 380 } 381 if (0 != m && -1 == chmod(host, m)) { 382 log_perror(srv->errh, __FILE__, __LINE__, 383 "chmod(\"%s\", %s)", host, s->socket_perms->ptr); 384 return -1; 385 } 386 } 387 388 if (-1 != stdin_fd) { } else 389 if (-1 == listen(srv_socket->fd, s->listen_backlog)) { 390 log_perror(srv->errh, __FILE__, __LINE__, "listen"); 391 return -1; 392 } 393 394 if (s->ssl_enabled) { 395 #ifdef TCP_DEFER_ACCEPT 396 } else if (s->defer_accept) { 397 int v = s->defer_accept; 398 if (-1 == setsockopt(srv_socket->fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &v, sizeof(v))) { 399 log_perror(srv->errh, __FILE__, __LINE__, "can't set TCP_DEFER_ACCEPT"); 400 } 401 #endif 402 #if defined(__FreeBSD__) || defined(__NetBSD__) \ 403 || defined(__OpenBSD__) || defined(__DragonFly__) 404 } else if (!buffer_is_empty(s->bsd_accept_filter) 405 && (buffer_is_equal_string(s->bsd_accept_filter, CONST_STR_LEN("httpready")) 406 || buffer_is_equal_string(s->bsd_accept_filter, CONST_STR_LEN("dataready")))) { 407 #ifdef SO_ACCEPTFILTER 408 /* FreeBSD accf_http filter */ 409 struct accept_filter_arg afa; 410 memset(&afa, 0, sizeof(afa)); 411 strncpy(afa.af_name, s->bsd_accept_filter->ptr, sizeof(afa.af_name)-1); 412 if (setsockopt(srv_socket->fd, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)) < 0) { 413 if (errno != ENOENT) { 414 log_perror(srv->errh, __FILE__, __LINE__, 415 "can't set accept-filter '%s'", s->bsd_accept_filter->ptr); 416 } 417 } 418 #endif 419 #endif 420 } 421 422 return 0; 423 } 424 425 int network_close(server *srv) { 426 for (uint32_t i = 0; i < srv->srv_sockets.used; ++i) { 427 server_socket *srv_socket = srv->srv_sockets.ptr[i]; 428 if (srv_socket->fd != -1) { 429 network_unregister_sock(srv, srv_socket); 430 close(srv_socket->fd); 431 } 432 433 buffer_free(srv_socket->srv_token); 434 435 free(srv_socket); 436 } 437 438 free(srv->srv_sockets.ptr); 439 srv->srv_sockets.ptr = NULL; 440 srv->srv_sockets.used = 0; 441 srv->srv_sockets.size = 0; 442 443 for (uint32_t i = 0; i < srv->srv_sockets_inherited.used; ++i) { 444 server_socket *srv_socket = srv->srv_sockets_inherited.ptr[i]; 445 if (srv_socket->fd != -1 && srv_socket->sidx != (unsigned short)~0u) { 446 close(srv_socket->fd); 447 } 448 449 buffer_free(srv_socket->srv_token); 450 451 free(srv_socket); 452 } 453 454 free(srv->srv_sockets_inherited.ptr); 455 srv->srv_sockets_inherited.ptr = NULL; 456 srv->srv_sockets_inherited.used = 0; 457 srv->srv_sockets_inherited.size = 0; 458 459 return 0; 460 } 461 462 void network_socket_activation_to_env (server * const srv) { 463 /* set up listening sockets for systemd socket activation 464 * and ensure FD_CLOEXEC flag is not set on listen fds */ 465 int fd = 3; /* #define SD_LISTEN_FDS_START 3 */ 466 for (uint32_t n = 0, i; n < srv->srv_sockets.used; ++n) { 467 server_socket *srv_socket = srv->srv_sockets.ptr[n]; 468 if (srv_socket->fd < fd) continue; 469 if (srv_socket->fd == fd) { 470 fdevent_clrfd_cloexec(fd); 471 ++fd; 472 continue; 473 } 474 /* (expecting ordered list, but check if fd is later in list)*/ 475 for (i = n+1; i < srv->srv_sockets.used; ++i) { 476 if (fd == srv->srv_sockets.ptr[i]->fd) 477 break; 478 } 479 if (i < srv->srv_sockets.used) { 480 fdevent_clrfd_cloexec(fd); 481 ++fd; 482 --n; /* loop to reprocess this entry */ 483 continue; 484 } 485 486 /* dup2() removes FD_CLOEXEC on newfd */ 487 if (fd != dup2(srv_socket->fd, fd)) continue; 488 ++fd; 489 /* old fd will be closed upon execv() due to its FD_CLOEXEC flag 490 * (if not already closed by another dup2() over it) */ 491 } 492 fd -= 3; /* now num fds; #define SD_LISTEN_FDS_START 3 */ 493 if (0 == fd) return; /*(no active sockets?)*/ 494 buffer * const tb = srv->tmp_buf; 495 buffer_clear(tb); 496 buffer_append_int(tb, fd); 497 setenv("LISTEN_FDS", tb->ptr, 1); 498 buffer_clear(tb); 499 buffer_append_int(tb, srv->pid); /* getpid() */ 500 setenv("LISTEN_PID", tb->ptr, 1); 501 } 502 503 static int network_socket_activation_nfds(server *srv, network_socket_config *s, int nfds) { 504 buffer *host = buffer_init(); 505 socklen_t addr_len; 506 sock_addr addr; 507 int rc = 0; 508 nfds += 3; /* #define SD_LISTEN_FDS_START 3 */ 509 for (int fd = 3; fd < nfds; ++fd) { 510 addr_len = sizeof(sock_addr); 511 if (-1 == (rc = getsockname(fd, (struct sockaddr *)&addr, &addr_len))) { 512 log_perror(srv->errh, __FILE__, __LINE__, 513 "socket activation getsockname()"); 514 break; 515 } 516 network_host_normalize_addr_str(host, &addr); 517 rc = network_server_init(srv, s, host, 0, fd); 518 if (0 != rc) break; 519 srv->srv_sockets.ptr[srv->srv_sockets.used-1]->sidx = (unsigned short)~0u; 520 } 521 buffer_free(host); 522 memcpy(&srv->srv_sockets_inherited, &srv->srv_sockets, sizeof(server_socket_array)); 523 memset(&srv->srv_sockets, 0, sizeof(server_socket_array)); 524 return rc; 525 } 526 527 static int network_socket_activation_from_env(server *srv, network_socket_config *s) { 528 char *listen_pid = getenv("LISTEN_PID"); 529 char *listen_fds = getenv("LISTEN_FDS"); 530 pid_t lpid = listen_pid ? (pid_t)strtoul(listen_pid,NULL,10) : 0; 531 int nfds = listen_fds ? atoi(listen_fds) : 0; 532 int rc = (lpid == getpid() && nfds > 0) 533 ? network_socket_activation_nfds(srv, s, nfds) 534 : 0; 535 unsetenv("LISTEN_PID"); 536 unsetenv("LISTEN_FDS"); 537 unsetenv("LISTEN_FDNAMES"); 538 /*(upon graceful restart, unsetenv will result in no-op above)*/ 539 return rc; 540 } 541 542 int network_init(server *srv, int stdin_fd) { 543 /*(network params used during setup (from $SERVER["socket"] condition))*/ 544 static const config_plugin_keys_t cpk[] = { 545 { CONST_STR_LEN("ssl.engine"), 546 T_CONFIG_BOOL, 547 T_CONFIG_SCOPE_CONNECTION } 548 ,{ CONST_STR_LEN("server.listen-backlog"), 549 T_CONFIG_INT, 550 T_CONFIG_SCOPE_CONNECTION } 551 ,{ CONST_STR_LEN("server.socket-perms"), 552 T_CONFIG_STRING, 553 T_CONFIG_SCOPE_CONNECTION } 554 ,{ CONST_STR_LEN("server.bsd-accept-filter"), 555 T_CONFIG_STRING, 556 T_CONFIG_SCOPE_CONNECTION } 557 ,{ CONST_STR_LEN("server.defer-accept"), 558 T_CONFIG_BOOL, 559 T_CONFIG_SCOPE_CONNECTION } 560 ,{ CONST_STR_LEN("server.use-ipv6"), 561 T_CONFIG_BOOL, 562 T_CONFIG_SCOPE_CONNECTION } 563 ,{ CONST_STR_LEN("server.set-v6only"), 564 T_CONFIG_BOOL, 565 T_CONFIG_SCOPE_CONNECTION } 566 ,{ CONST_STR_LEN("server.v4mapped"), 567 T_CONFIG_BOOL, 568 T_CONFIG_SCOPE_CONNECTION } 569 #if 0 /* TODO: more integration needed ... */ 570 ,{ CONST_STR_LEN("mbedtls.engine"), 571 T_CONFIG_BOOL, 572 T_CONFIG_SCOPE_CONNECTION } 573 #endif 574 ,{ NULL, 0, 575 T_CONFIG_UNSET, 576 T_CONFIG_SCOPE_UNSET } 577 }; 578 579 #ifdef __WIN32 580 WSADATA wsaData; 581 WORD wVersionRequested = MAKEWORD(2, 2); 582 if (0 != WSAStartup(wVersionRequested, &wsaData)) { 583 /* Tell the user that we could not find a usable WinSock DLL */ 584 return -1; 585 } 586 #endif 587 588 if (0 != network_write_init(srv)) return -1; 589 590 network_plugin_data np; 591 memset(&np, 0, sizeof(network_plugin_data)); 592 network_plugin_data *p = &np; 593 594 if (!config_plugin_values_init(srv, p, cpk, "network")) 595 return HANDLER_ERROR; 596 597 p->defaults.listen_backlog = 1024; 598 p->defaults.defer_accept = 0; 599 p->defaults.use_ipv6 = 0; 600 p->defaults.set_v6only = 1; 601 p->defaults.v4mapped = -1; /*(-1 for unset; not 0 or 1)*/ 602 603 /* initialize p->defaults from global config context */ 604 if (p->nconfig > 0 && p->cvlist->v.u2[1]) { 605 const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0]; 606 if (-1 != cpv->k_id) 607 network_merge_config(&p->defaults, cpv); 608 } 609 610 int rc = 0; 611 do { 612 613 if (srv->srvconf.systemd_socket_activation) { 614 for (uint32_t i = 0; i < srv->srv_sockets_inherited.used; ++i) { 615 srv->srv_sockets_inherited.ptr[i]->sidx = (unsigned short)~0u; 616 } 617 rc = network_socket_activation_from_env(srv, &p->defaults); 618 if (0 != rc) break; 619 if (0 == srv->srv_sockets_inherited.used) { 620 srv->srvconf.systemd_socket_activation = 0; 621 } 622 } 623 624 /* process srv->srvconf.bindhost 625 * (skip if systemd socket activation is enabled and bindhost is empty; 626 * do not additionally listen on "*") */ 627 if (!srv->srvconf.systemd_socket_activation 628 || !buffer_string_is_empty(srv->srvconf.bindhost)) { 629 buffer *b = buffer_init(); 630 buffer_copy_buffer(b, srv->srvconf.bindhost); 631 if (b->ptr[0] != '/') { /*(skip adding port if unix socket path)*/ 632 buffer_append_string_len(b, CONST_STR_LEN(":")); 633 buffer_append_int(b, srv->srvconf.port); 634 } 635 636 rc = (-1 == stdin_fd || 0 == srv->srv_sockets.used) 637 ? network_server_init(srv, &p->defaults, b, 0, stdin_fd) 638 : close(stdin_fd);/*(graceful restart listening to "/dev/stdin")*/ 639 buffer_free(b); 640 if (0 != rc) break; 641 } 642 643 /* check for $SERVER["socket"] */ 644 for (uint32_t i = 1; i < srv->config_context->used; ++i) { 645 config_cond_info cfginfo; 646 config_get_config_cond_info(&cfginfo, i); 647 if (COMP_SERVER_SOCKET != cfginfo.comp) continue;/* not our stage */ 648 649 buffer *host_token; 650 *(const buffer **)&host_token = cfginfo.string; 651 /*(cfginfo.string is modified during config)*/ 652 653 memcpy(&p->conf, &p->defaults, sizeof(network_socket_config)); 654 for (int j = !p->cvlist[0].v.u2[1]; j < p->nconfig; ++j) { 655 if ((int)i != p->cvlist[j].k_id) continue; 656 const config_plugin_value_t *cpv = 657 p->cvlist + p->cvlist[j].v.u2[0]; 658 network_merge_config(&p->conf, cpv); 659 break; 660 } 661 662 if (cfginfo.cond == CONFIG_COND_EQ) { 663 rc = network_server_init(srv, &p->conf, host_token, i, -1); 664 if (0 != rc) break; 665 } 666 else if (cfginfo.cond == CONFIG_COND_NE) { 667 socklen_t addr_len = sizeof(sock_addr); 668 sock_addr addr; 669 rc = network_host_parse_addr(srv, &addr, &addr_len, 670 host_token, p->conf.use_ipv6); 671 if (0 != rc) break; 672 network_host_normalize_addr_str(host_token, &addr); 673 } 674 } 675 if (0 != rc) break; 676 677 if (srv->srvconf.systemd_socket_activation) { 678 /* activate any inherited sockets not explicitly listed in config */ 679 server_socket *srv_socket; 680 for (uint32_t i = 0; i < srv->srv_sockets_inherited.used; ++i) { 681 if ((unsigned short)~0u 682 != srv->srv_sockets_inherited.ptr[i]->sidx) 683 continue; 684 srv->srv_sockets_inherited.ptr[i]->sidx = 0; 685 srv_socket = calloc(1, sizeof(server_socket)); 686 force_assert(NULL != srv_socket); 687 memcpy(srv_socket, srv->srv_sockets_inherited.ptr[i], 688 sizeof(server_socket)); 689 network_srv_sockets_append(srv, srv_socket); 690 } 691 } 692 693 } while (0); 694 695 free(p->cvlist); 696 return rc; 697 } 698 699 void network_unregister_sock(server *srv, server_socket *srv_socket) { 700 fdnode *fdn = srv_socket->fdn; 701 if (NULL == fdn) return; 702 fdevent_fdnode_event_del(srv->ev, fdn); 703 fdevent_unregister(srv->ev, fdn->fd); 704 srv_socket->fdn = NULL; 705 } 706 707 int network_register_fdevents(server *srv) { 708 if (-1 == fdevent_reset(srv->ev)) { 709 return -1; 710 } 711 712 if (srv->sockets_disabled) return 0; /* lighttpd -1 (one-shot mode) */ 713 714 /* register fdevents after reset */ 715 for (uint32_t i = 0; i < srv->srv_sockets.used; ++i) { 716 server_socket *srv_socket = srv->srv_sockets.ptr[i]; 717 718 srv_socket->fdn = fdevent_register(srv->ev, srv_socket->fd, network_server_handle_fdevent, srv_socket); 719 fdevent_fdnode_event_set(srv->ev, srv_socket->fdn, FDEVENT_IN); 720 } 721 return 0; 722 } 723