/* * nghttp2 - HTTP/2 C Library * * Copyright (c) 2012 Tatsuhiro Tsujikawa * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "shrpx.h" #include #include #ifdef HAVE_SYS_SOCKET_H #include #endif // HAVE_SYS_SOCKET_H #include #ifdef HAVE_NETDB_H #include #endif // HAVE_NETDB_H #include #ifdef HAVE_NETINET_IN_H #include #endif // HAVE_NETINET_IN_H #include #ifdef HAVE_ARPA_INET_H #include #endif // HAVE_ARPA_INET_H #ifdef HAVE_UNISTD_H #include #endif // HAVE_UNISTD_H #include #ifdef HAVE_SYSLOG_H #include #endif // HAVE_SYSLOG_H #include #ifdef HAVE_LIMITS_H #include #endif // HAVE_LIMITS_H #ifdef HAVE_SYS_TIME_H #include #endif // HAVE_SYS_TIME_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "shrpx_config.h" #include "shrpx_connection_handler.h" #include "shrpx_ssl.h" #include "shrpx_log_config.h" #include "shrpx_worker.h" #include "shrpx_accept_handler.h" #include "shrpx_http2_upstream.h" #include "shrpx_http2_session.h" #include "util.h" #include "app_helper.h" #include "ssl.h" #include "template.h" extern char **environ; using namespace nghttp2; namespace shrpx { namespace { const int REOPEN_LOG_SIGNAL = SIGUSR1; const int EXEC_BINARY_SIGNAL = SIGUSR2; const int GRACEFUL_SHUTDOWN_SIGNAL = SIGQUIT; } // namespace // Environment variables to tell new binary the listening socket's // file descriptors. They are not close-on-exec. #define ENV_LISTENER4_FD "NGHTTPX_LISTENER4_FD" #define ENV_LISTENER6_FD "NGHTTPX_LISTENER6_FD" // Environment variable to tell new binary the port number the current // binary is listening to. #define ENV_PORT "NGHTTPX_PORT" // Environment variable to tell new binary the listening socket's file // descriptor if frontend listens UNIX domain socket. #define ENV_UNIX_FD "NGHTTP2_UNIX_FD" // Environment variable to tell new binary the UNIX domain socket // path. #define ENV_UNIX_PATH "NGHTTP2_UNIX_PATH" namespace { int resolve_hostname(sockaddr_union *addr, size_t *addrlen, const char *hostname, uint16_t port, int family) { addrinfo hints; int rv; auto service = util::utos(port); memset(&hints, 0, sizeof(addrinfo)); hints.ai_family = family; hints.ai_socktype = SOCK_STREAM; #ifdef AI_ADDRCONFIG hints.ai_flags |= AI_ADDRCONFIG; #endif // AI_ADDRCONFIG addrinfo *res; rv = getaddrinfo(hostname, service.c_str(), &hints, &res); if (rv != 0) { LOG(FATAL) << "Unable to resolve address for " << hostname << ": " << gai_strerror(rv); return -1; } char host[NI_MAXHOST]; rv = getnameinfo(res->ai_addr, res->ai_addrlen, host, sizeof(host), 0, 0, NI_NUMERICHOST); if (rv != 0) { LOG(FATAL) << "Address resolution for " << hostname << " failed: " << gai_strerror(rv); freeaddrinfo(res); return -1; } if (LOG_ENABLED(INFO)) { LOG(INFO) << "Address resolution for " << hostname << " succeeded: " << host; } memcpy(addr, res->ai_addr, res->ai_addrlen); *addrlen = res->ai_addrlen; freeaddrinfo(res); return 0; } } // namespace namespace { void close_env_fd(std::initializer_list envnames) { for (auto envname : envnames) { auto envfd = getenv(envname); if (!envfd) { continue; } auto fd = strtol(envfd, nullptr, 10); close(fd); } } } // namespace namespace { std::unique_ptr create_unix_domain_acceptor(ConnectionHandler *handler) { auto path = get_config()->host.get(); auto pathlen = strlen(path); { auto envfd = getenv(ENV_UNIX_FD); auto envpath = getenv(ENV_UNIX_PATH); if (envfd && envpath) { auto fd = strtoul(envfd, nullptr, 10); if (util::streq(envpath, path)) { LOG(NOTICE) << "Listening on UNIX domain socket " << path; return make_unique(fd, handler); } LOG(WARN) << "UNIX domain socket path was changed between old binary (" << envpath << ") and new binary (" << path << ")"; close(fd); } } #ifdef SOCK_NONBLOCK auto fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0); if (fd == -1) { return nullptr; } #else // !SOCK_NONBLOCK auto fd = socket(AF_UNIX, SOCK_STREAM, 0); if (fd == -1) { return nullptr; } util::make_socket_nonblocking(fd); #endif // !SOCK_NONBLOCK int val = 1; if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, static_cast(sizeof(val))) == -1) { close(fd); return nullptr; } sockaddr_union addr; addr.un.sun_family = AF_UNIX; if (pathlen + 1 > sizeof(addr.un.sun_path)) { LOG(FATAL) << "UNIX domain socket path " << path << " is too long > " << sizeof(addr.un.sun_path); close(fd); return nullptr; } // copy path including terminal NULL std::copy_n(path, pathlen + 1, addr.un.sun_path); // unlink (remove) already existing UNIX domain socket path unlink(path); if (bind(fd, &addr.sa, sizeof(addr.un)) != 0) { auto error = errno; LOG(FATAL) << "Failed to bind UNIX domain socket, error=" << error; close(fd); return nullptr; } if (listen(fd, get_config()->backlog) != 0) { auto error = errno; LOG(FATAL) << "Failed to listen to UNIX domain socket, error=" << error; close(fd); return nullptr; } LOG(NOTICE) << "Listening on UNIX domain socket " << path; return make_unique(fd, handler); } } // namespace namespace { std::unique_ptr create_acceptor(ConnectionHandler *handler, int family) { { auto envfd = getenv(family == AF_INET ? ENV_LISTENER4_FD : ENV_LISTENER6_FD); auto envport = getenv(ENV_PORT); if (envfd && envport) { auto fd = strtoul(envfd, nullptr, 10); auto port = strtoul(envport, nullptr, 10); // Only do this iff NGHTTPX_PORT == get_config()->port. // Otherwise, close fd, and create server socket as usual. if (port == get_config()->port) { LOG(NOTICE) << "Listening on port " << get_config()->port; return make_unique(fd, handler); } LOG(WARN) << "Port was changed between old binary (" << port << ") and new binary (" << get_config()->port << ")"; close(fd); } } addrinfo hints; int fd = -1; int rv; auto service = util::utos(get_config()->port); memset(&hints, 0, sizeof(addrinfo)); hints.ai_family = family; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE; #ifdef AI_ADDRCONFIG hints.ai_flags |= AI_ADDRCONFIG; #endif // AI_ADDRCONFIG auto node = strcmp("*", get_config()->host.get()) == 0 ? nullptr : get_config()->host.get(); addrinfo *res, *rp; rv = getaddrinfo(node, service.c_str(), &hints, &res); if (rv != 0) { if (LOG_ENABLED(INFO)) { LOG(INFO) << "Unable to get IPv" << (family == AF_INET ? "4" : "6") << " address for " << get_config()->host.get() << ": " << gai_strerror(rv); } return nullptr; } for (rp = res; rp; rp = rp->ai_next) { #ifdef SOCK_NONBLOCK fd = socket(rp->ai_family, rp->ai_socktype | SOCK_NONBLOCK, rp->ai_protocol); if (fd == -1) { auto error = errno; LOG(WARN) << "socket() syscall failed, error=" << error; continue; } #else // !SOCK_NONBLOCK fd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); if (fd == -1) { auto error = errno; LOG(WARN) << "socket() syscall failed, error=" << error; continue; } util::make_socket_nonblocking(fd); #endif // !SOCK_NONBLOCK int val = 1; if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, static_cast(sizeof(val))) == -1) { auto error = errno; LOG(WARN) << "Failed to set SO_REUSEADDR option to listener socket, error=" << error; close(fd); continue; } #ifdef IPV6_V6ONLY if (family == AF_INET6) { if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, static_cast(sizeof(val))) == -1) { auto error = errno; LOG(WARN) << "Failed to set IPV6_V6ONLY option to listener socket, error=" << error; close(fd); continue; } } #endif // IPV6_V6ONLY #ifdef TCP_DEFER_ACCEPT val = 3; if (setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &val, static_cast(sizeof(val))) == -1) { LOG(WARN) << "Failed to set TCP_DEFER_ACCEPT option to listener socket"; } #endif // TCP_DEFER_ACCEPT // When we are executing new binary, and the old binary did not // bind privileged port (< 1024) for some reason, binding to those // ports will fail with permission denied error. if (bind(fd, rp->ai_addr, rp->ai_addrlen) == -1) { auto error = errno; LOG(WARN) << "bind() syscall failed, error=" << error; close(fd); continue; } if (listen(fd, get_config()->backlog) == -1) { auto error = errno; LOG(WARN) << "listen() syscall failed, error=" << error; close(fd); continue; } break; } if (!rp) { LOG(WARN) << "Listening " << (family == AF_INET ? "IPv4" : "IPv6") << " socket failed"; freeaddrinfo(res); return nullptr; } char host[NI_MAXHOST]; rv = getnameinfo(rp->ai_addr, rp->ai_addrlen, host, sizeof(host), nullptr, 0, NI_NUMERICHOST); freeaddrinfo(res); if (rv != 0) { LOG(WARN) << gai_strerror(rv); close(fd); return nullptr; } LOG(NOTICE) << "Listening on " << host << ", port " << get_config()->port; return make_unique(fd, handler); } } // namespace namespace { void drop_privileges() { if (getuid() == 0 && get_config()->uid != 0) { if (initgroups(get_config()->user.get(), get_config()->gid) != 0) { auto error = errno; LOG(FATAL) << "Could not change supplementary groups: " << strerror(error); exit(EXIT_FAILURE); } if (setgid(get_config()->gid) != 0) { auto error = errno; LOG(FATAL) << "Could not change gid: " << strerror(error); exit(EXIT_FAILURE); } if (setuid(get_config()->uid) != 0) { auto error = errno; LOG(FATAL) << "Could not change uid: " << strerror(error); exit(EXIT_FAILURE); } if (setuid(0) != -1) { LOG(FATAL) << "Still have root privileges?"; exit(EXIT_FAILURE); } } } } // namespace namespace { void save_pid() { std::ofstream out(get_config()->pid_file.get(), std::ios::binary); out << get_config()->pid << "\n"; out.close(); if (!out) { LOG(ERROR) << "Could not save PID to file " << get_config()->pid_file.get(); exit(EXIT_FAILURE); } if (get_config()->uid != 0) { if (chown(get_config()->pid_file.get(), get_config()->uid, get_config()->gid) == -1) { auto error = errno; LOG(WARN) << "Changing owner of pid file " << get_config()->pid_file.get() << " failed: " << strerror(error); } } } } // namespace namespace { void reopen_log_signal_cb(struct ev_loop *loop, ev_signal *w, int revents) { auto conn_handler = static_cast(w->data); LOG(NOTICE) << "Reopening log files: main"; (void)reopen_log_files(); redirect_stderr_to_errorlog(); if (get_config()->num_worker > 1) { conn_handler->worker_reopen_log_files(); } } } // namespace namespace { void exec_binary_signal_cb(struct ev_loop *loop, ev_signal *w, int revents) { auto conn_handler = static_cast(w->data); LOG(NOTICE) << "Executing new binary"; auto pid = fork(); if (pid == -1) { auto error = errno; LOG(ERROR) << "fork() failed errno=" << error; return; } if (pid != 0) { return; } auto exec_path = util::get_exec_path(get_config()->argc, get_config()->argv, get_config()->cwd); if (!exec_path) { LOG(ERROR) << "Could not resolve the executable path"; return; } auto argv = make_unique(get_config()->argc + 1); argv[0] = exec_path; for (int i = 1; i < get_config()->argc; ++i) { argv[i] = strdup(get_config()->argv[i]); } argv[get_config()->argc] = nullptr; size_t envlen = 0; for (char **p = environ; *p; ++p, ++envlen) ; // 3 for missing (fd4, fd6 and port) or (unix fd and unix path) auto envp = make_unique(envlen + 3 + 1); size_t envidx = 0; if (get_config()->host_unix) { auto acceptor = conn_handler->get_acceptor(); std::string fd = ENV_UNIX_FD "="; fd += util::utos(acceptor->get_fd()); envp[envidx++] = strdup(fd.c_str()); std::string path = ENV_UNIX_PATH "="; path += get_config()->host.get(); envp[envidx++] = strdup(path.c_str()); } else { auto acceptor4 = conn_handler->get_acceptor(); if (acceptor4) { std::string fd4 = ENV_LISTENER4_FD "="; fd4 += util::utos(acceptor4->get_fd()); envp[envidx++] = strdup(fd4.c_str()); } auto acceptor6 = conn_handler->get_acceptor6(); if (acceptor6) { std::string fd6 = ENV_LISTENER6_FD "="; fd6 += util::utos(acceptor6->get_fd()); envp[envidx++] = strdup(fd6.c_str()); } std::string port = ENV_PORT "="; port += util::utos(get_config()->port); envp[envidx++] = strdup(port.c_str()); } for (size_t i = 0; i < envlen; ++i) { if (util::startsWith(environ[i], ENV_LISTENER4_FD) || util::startsWith(environ[i], ENV_LISTENER6_FD) || util::startsWith(environ[i], ENV_PORT) || util::startsWith(environ[i], ENV_UNIX_FD) || util::startsWith(environ[i], ENV_UNIX_PATH)) { continue; } envp[envidx++] = environ[i]; } envp[envidx++] = nullptr; if (LOG_ENABLED(INFO)) { LOG(INFO) << "cmdline"; for (int i = 0; argv[i]; ++i) { LOG(INFO) << i << ": " << argv[i]; } LOG(INFO) << "environ"; for (int i = 0; envp[i]; ++i) { LOG(INFO) << i << ": " << envp[i]; } } if (execve(argv[0], argv.get(), envp.get()) == -1) { auto error = errno; LOG(ERROR) << "execve failed: errno=" << error; _Exit(EXIT_FAILURE); } } } // namespace namespace { void graceful_shutdown_signal_cb(struct ev_loop *loop, ev_signal *w, int revents) { auto conn_handler = static_cast(w->data); if (conn_handler->get_graceful_shutdown()) { return; } LOG(NOTICE) << "Graceful shutdown signal received"; conn_handler->set_graceful_shutdown(true); conn_handler->disable_acceptor(); // After disabling accepting new connection, disptach incoming // connection in backlog. conn_handler->accept_pending_connection(); conn_handler->graceful_shutdown_worker(); if (get_config()->num_worker == 1 && conn_handler->get_single_worker()->get_worker_stat()->num_connections > 0) { return; } // We have accepted all pending connections. Shutdown main event // loop. ev_break(loop); } } // namespace namespace { void renew_ticket_key_cb(struct ev_loop *loop, ev_timer *w, int revents) { auto conn_handler = static_cast(w->data); const auto &old_ticket_keys = conn_handler->get_ticket_keys(); auto ticket_keys = std::make_shared(); LOG(NOTICE) << "Renew ticket keys: main"; // We store at most 2 ticket keys if (old_ticket_keys) { auto &old_keys = old_ticket_keys->keys; auto &new_keys = ticket_keys->keys; assert(!old_keys.empty()); new_keys.resize(2); new_keys[1] = old_keys[0]; } else { ticket_keys->keys.resize(1); } if (RAND_bytes(reinterpret_cast(&ticket_keys->keys[0]), sizeof(ticket_keys->keys[0])) == 0) { if (LOG_ENABLED(INFO)) { LOG(INFO) << "failed to renew ticket key"; } return; } if (LOG_ENABLED(INFO)) { LOG(INFO) << "ticket keys generation done"; for (auto &key : ticket_keys->keys) { LOG(INFO) << "name: " << util::format_hex(key.name, sizeof(key.name)); } } conn_handler->set_ticket_keys(ticket_keys); conn_handler->worker_renew_ticket_keys(ticket_keys); } } // namespace namespace { int call_daemon() { #ifdef __sgi return _daemonize(0, 0, 0, 0); #else // !__sgi return daemon(0, 0); #endif // !__sgi } } // namespace namespace { int event_loop() { auto loop = EV_DEFAULT; auto conn_handler = make_unique(loop); if (get_config()->daemon) { if (call_daemon() == -1) { auto error = errno; LOG(FATAL) << "Failed to daemonize: " << strerror(error); exit(EXIT_FAILURE); } // We get new PID after successful daemon(). mod_config()->pid = getpid(); // daemon redirects stderr file descriptor to /dev/null, so we // need this. redirect_stderr_to_errorlog(); } if (get_config()->pid_file) { save_pid(); } if (get_config()->host_unix) { close_env_fd({ENV_LISTENER4_FD, ENV_LISTENER6_FD}); auto acceptor = create_unix_domain_acceptor(conn_handler.get()); if (!acceptor) { LOG(FATAL) << "Failed to listen on UNIX domain socket " << get_config()->host.get(); exit(EXIT_FAILURE); } conn_handler->set_acceptor(std::move(acceptor)); } else { close_env_fd({ENV_UNIX_FD}); auto acceptor6 = create_acceptor(conn_handler.get(), AF_INET6); auto acceptor4 = create_acceptor(conn_handler.get(), AF_INET); if (!acceptor6 && !acceptor4) { LOG(FATAL) << "Failed to listen on address " << get_config()->host.get() << ", port " << get_config()->port; exit(EXIT_FAILURE); } conn_handler->set_acceptor(std::move(acceptor4)); conn_handler->set_acceptor6(std::move(acceptor6)); } ev_timer renew_ticket_key_timer; if (!get_config()->upstream_no_tls) { bool auto_tls_ticket_key = true; if (!get_config()->tls_ticket_key_files.empty()) { auto ticket_keys = read_tls_ticket_key_file(get_config()->tls_ticket_key_files); if (!ticket_keys) { LOG(WARN) << "Use internal session ticket key generator"; } else { conn_handler->set_ticket_keys(std::move(ticket_keys)); auto_tls_ticket_key = false; } } if (auto_tls_ticket_key) { // Renew ticket key every 12hrs ev_timer_init(&renew_ticket_key_timer, renew_ticket_key_cb, 0., 12_h); renew_ticket_key_timer.data = conn_handler.get(); ev_timer_again(loop, &renew_ticket_key_timer); // Generate first session ticket key before running workers. renew_ticket_key_cb(loop, &renew_ticket_key_timer, 0); } } // ListenHandler loads private key, and we listen on a priveleged port. // After that, we drop the root privileges if needed. drop_privileges(); #ifndef NOTHREADS int rv; sigset_t signals; sigemptyset(&signals); sigaddset(&signals, REOPEN_LOG_SIGNAL); sigaddset(&signals, EXEC_BINARY_SIGNAL); sigaddset(&signals, GRACEFUL_SHUTDOWN_SIGNAL); rv = pthread_sigmask(SIG_BLOCK, &signals, nullptr); if (rv != 0) { LOG(ERROR) << "Blocking signals failed: " << strerror(rv); } #endif // !NOTHREADS if (get_config()->num_worker == 1) { conn_handler->create_single_worker(); } else { conn_handler->create_worker_thread(get_config()->num_worker); } #ifndef NOTHREADS rv = pthread_sigmask(SIG_UNBLOCK, &signals, nullptr); if (rv != 0) { LOG(ERROR) << "Unblocking signals failed: " << strerror(rv); } #endif // !NOTHREADS ev_signal reopen_log_sig; ev_signal_init(&reopen_log_sig, reopen_log_signal_cb, REOPEN_LOG_SIGNAL); reopen_log_sig.data = conn_handler.get(); ev_signal_start(loop, &reopen_log_sig); ev_signal exec_bin_sig; ev_signal_init(&exec_bin_sig, exec_binary_signal_cb, EXEC_BINARY_SIGNAL); exec_bin_sig.data = conn_handler.get(); ev_signal_start(loop, &exec_bin_sig); ev_signal graceful_shutdown_sig; ev_signal_init(&graceful_shutdown_sig, graceful_shutdown_signal_cb, GRACEFUL_SHUTDOWN_SIGNAL); graceful_shutdown_sig.data = conn_handler.get(); ev_signal_start(loop, &graceful_shutdown_sig); if (!get_config()->upstream_no_tls && !get_config()->no_ocsp) { conn_handler->proceed_next_cert_ocsp(); } if (LOG_ENABLED(INFO)) { LOG(INFO) << "Entering event loop"; } ev_run(loop, 0); conn_handler->join_worker(); conn_handler->cancel_ocsp_update(); return 0; } } // namespace namespace { // Returns true if regular file or symbolic link |path| exists. bool conf_exists(const char *path) { struct stat buf; int rv = stat(path, &buf); return rv == 0 && (buf.st_mode & (S_IFREG | S_IFLNK)); } } // namespace namespace { constexpr char DEFAULT_NPN_LIST[] = "h2,h2-16,h2-14," #ifdef HAVE_SPDYLAY "spdy/3.1," #endif // HAVE_SPDYLAY "http/1.1"; } // namespace namespace { constexpr char DEFAULT_TLS_PROTO_LIST[] = "TLSv1.2,TLSv1.1"; } // namespace namespace { constexpr char DEFAULT_ACCESSLOG_FORMAT[] = R"($remote_addr - - [$time_local] )" R"("$request" $status $body_bytes_sent )" R"("$http_referer" "$http_user_agent")"; } // namespace namespace { constexpr char DEFAULT_DOWNSTREAM_HOST[] = "127.0.0.1"; int16_t DEFAULT_DOWNSTREAM_PORT = 80; } // namespace; namespace { void fill_default_config() { memset(mod_config(), 0, sizeof(*mod_config())); mod_config()->verbose = false; mod_config()->daemon = false; mod_config()->server_name = "nghttpx nghttp2/" NGHTTP2_VERSION; mod_config()->host = strcopy("*"); mod_config()->port = 3000; mod_config()->private_key_file = nullptr; mod_config()->private_key_passwd = nullptr; mod_config()->cert_file = nullptr; // Read timeout for HTTP2 upstream connection mod_config()->http2_upstream_read_timeout = 3_min; // Read timeout for non-HTTP2 upstream connection mod_config()->upstream_read_timeout = 3_min; // Write timeout for HTTP2/non-HTTP2 upstream connection mod_config()->upstream_write_timeout = 30.; // Read/Write timeouts for downstream connection mod_config()->downstream_read_timeout = 3_min; mod_config()->downstream_write_timeout = 30.; // Read timeout for HTTP/2 stream mod_config()->stream_read_timeout = 0.; // Write timeout for HTTP/2 stream mod_config()->stream_write_timeout = 0.; // Timeout for pooled (idle) connections mod_config()->downstream_idle_read_timeout = 2.; // window bits for HTTP/2 and SPDY upstream/downstream connection // per stream. 2**16-1 = 64KiB-1, which is HTTP/2 default. Please // note that SPDY/3 default is 64KiB. mod_config()->http2_upstream_window_bits = 16; mod_config()->http2_downstream_window_bits = 16; // HTTP/2 SPDY/3.1 has connection-level flow control. The default // window size for HTTP/2 is 64KiB - 1. SPDY/3's default is 64KiB mod_config()->http2_upstream_connection_window_bits = 16; mod_config()->http2_downstream_connection_window_bits = 16; mod_config()->upstream_no_tls = false; mod_config()->downstream_no_tls = false; mod_config()->num_worker = 1; mod_config()->http2_max_concurrent_streams = 100; mod_config()->add_x_forwarded_for = false; mod_config()->strip_incoming_x_forwarded_for = false; mod_config()->no_via = false; mod_config()->accesslog_file = nullptr; mod_config()->accesslog_syslog = false; mod_config()->accesslog_format = parse_log_format(DEFAULT_ACCESSLOG_FORMAT); #if defined(__ANDROID__) || defined(ANDROID) // Android does not have /dev/stderr. Use /proc/self/fd/2 instead. mod_config()->errorlog_file = strcopy("/proc/self/fd/2"); #else // !__ANDROID__ && ANDROID mod_config()->errorlog_file = strcopy("/dev/stderr"); #endif // !__ANDROID__ && ANDROID mod_config()->errorlog_syslog = false; mod_config()->conf_path = strcopy("/etc/nghttpx/nghttpx.conf"); mod_config()->syslog_facility = LOG_DAEMON; // Default accept() backlog mod_config()->backlog = 512; mod_config()->ciphers = nullptr; mod_config()->http2_proxy = false; mod_config()->http2_bridge = false; mod_config()->client_proxy = false; mod_config()->client = false; mod_config()->client_mode = false; mod_config()->insecure = false; mod_config()->cacert = nullptr; mod_config()->pid_file = nullptr; mod_config()->user = nullptr; mod_config()->uid = 0; mod_config()->gid = 0; mod_config()->pid = getpid(); mod_config()->backend_ipv4 = false; mod_config()->backend_ipv6 = false; mod_config()->downstream_http_proxy_userinfo = nullptr; mod_config()->downstream_http_proxy_host = nullptr; mod_config()->downstream_http_proxy_port = 0; mod_config()->downstream_http_proxy_addrlen = 0; mod_config()->read_rate = 0; mod_config()->read_burst = 0; mod_config()->write_rate = 0; mod_config()->write_burst = 0; mod_config()->worker_read_rate = 0; mod_config()->worker_read_burst = 0; mod_config()->worker_write_rate = 0; mod_config()->worker_write_burst = 0; mod_config()->verify_client = false; mod_config()->verify_client_cacert = nullptr; mod_config()->client_private_key_file = nullptr; mod_config()->client_cert_file = nullptr; mod_config()->http2_upstream_dump_request_header = nullptr; mod_config()->http2_upstream_dump_response_header = nullptr; mod_config()->http2_no_cookie_crumbling = false; mod_config()->upstream_frame_debug = false; mod_config()->padding = 0; mod_config()->worker_frontend_connections = 0; mod_config()->http2_upstream_callbacks = create_http2_upstream_callbacks(); mod_config()->http2_downstream_callbacks = create_http2_downstream_callbacks(); nghttp2_option_new(&mod_config()->http2_option); nghttp2_option_set_no_auto_window_update(get_config()->http2_option, 1); nghttp2_option_set_no_recv_client_magic(get_config()->http2_option, 1); nghttp2_option_new(&mod_config()->http2_client_option); nghttp2_option_set_no_auto_window_update(get_config()->http2_client_option, 1); nghttp2_option_set_peer_max_concurrent_streams( get_config()->http2_client_option, 100); mod_config()->tls_proto_mask = 0; mod_config()->no_location_rewrite = false; mod_config()->no_host_rewrite = false; mod_config()->argc = 0; mod_config()->argv = nullptr; mod_config()->downstream_connections_per_host = 8; mod_config()->downstream_connections_per_frontend = 0; mod_config()->listener_disable_timeout = 0.; mod_config()->downstream_request_buffer_size = 16_k; mod_config()->downstream_response_buffer_size = 16_k; mod_config()->no_server_push = false; mod_config()->host_unix = false; mod_config()->http2_downstream_connections_per_worker = 0; // ocsp update interval = 14400 secs = 4 hours, borrowed from h2o mod_config()->ocsp_update_interval = 4_h; mod_config()->fetch_ocsp_response_file = strcopy(PKGDATADIR "/fetch-ocsp-response"); mod_config()->no_ocsp = false; mod_config()->header_field_buffer = 64_k; mod_config()->max_header_fields = 100; mod_config()->downstream_addr_group_catch_all = 0; } } // namespace namespace { void print_version(std::ostream &out) { out << get_config()->server_name << std::endl; } } // namespace namespace { void print_usage(std::ostream &out) { out << R"(Usage: nghttpx [OPTIONS]... [ ] A reverse proxy for HTTP/2, HTTP/1 and SPDY.)" << std::endl; } } // namespace namespace { void print_help(std::ostream &out) { print_usage(out); out << R"( Set path to server's private key. Required unless -p, --client or --frontend-no-tls are given. Set path to server's certificate. Required unless -p, --client or --frontend-no-tls are given. To make OCSP stapling work, this must be absolute path. Options: The options are categorized into several groups. Connections: -b, --backend=,[;[:...]] Set backend host and port. The multiple backend addresses are accepted by repeating this option. UNIX domain socket can be specified by prefixing path name with "unix:" (e.g., unix:/var/run/backend.sock). Optionally, if s are given, the backend address is only used if request matches the pattern. If -s, -p, --client or --http2-bridge is used, s are ignored. The pattern matching is closely designed to ServeMux in net/http package of Go programming language. consists of path, host + path or host. The path must starts with "/". If it ends with "/", it matches to the request path whose prefix is the path. If it does not end with "/", it performs exact match against the request path. If host is given, it performs exact match against the request host. If host alone is given, "/" is appended to it, so that it matches all paths under the host (e.g., specifying "nghttp2.org" equals to "nghttp2.org/"). Longer patterns take precedence over shorter ones, breaking a tie by the order of the appearance in the configuration. If is omitted, "/" is used as pattern, which matches all paths (catch-all pattern). For example, -b'127.0.0.1,8080;nghttp2.org/httpbin/' matches the request host "nghttp2.org" and the request path "/httpbin/get", but does not match the request host "nghttp2.org" and the request path "/index.html". The multiple s can be specified, delimiting them by ":". Specifying -b'127.0.0.1,8080;nghttp2.org:www.nghttp2.org' has the same effect to specify -b'127.0.0.1,8080;nghttp2.org' and -b'127.0.0.1,8080:www.nghttp2.org'. The backend addresses sharing same are grouped together forming load balancing group. Since ";" and ":" are used as delimiter, must not contain these characters. Default: )" << DEFAULT_DOWNSTREAM_HOST << "," << DEFAULT_DOWNSTREAM_PORT << R"( -f, --frontend=, Set frontend host and port. If is '*', it assumes all addresses including both IPv4 and IPv6. UNIX domain socket can be specified by prefixing path name with "unix:" (e.g., unix:/var/run/nghttpx.sock) Default: )" << get_config()->host.get() << "," << get_config()->port << R"( --backlog= Set listen backlog size. Default: )" << get_config()->backlog << R"( --backend-ipv4 Resolve backend hostname to IPv4 address only. --backend-ipv6 Resolve backend hostname to IPv6 address only. --backend-http-proxy-uri= Specify proxy URI in the form http://[:@]:. If a proxy requires authentication, specify and . Note that they must be properly percent-encoded. This proxy is used when the backend connection is HTTP/2. First, make a CONNECT request to the proxy and it connects to the backend on behalf of nghttpx. This forms tunnel. After that, nghttpx performs SSL/TLS handshake with the downstream through the tunnel. The timeouts when connecting and making CONNECT request can be specified by --backend-read-timeout and --backend-write-timeout options. Performance: -n, --workers= Set the number of worker threads. Default: )" << get_config()->num_worker << R"( --read-rate= Set maximum average read rate on frontend connection. Setting 0 to this option means read rate is unlimited. Default: )" << get_config()->read_rate << R"( --read-burst= Set maximum read burst size on frontend connection. Setting 0 to this option means read burst size is unlimited. Default: )" << get_config()->read_burst << R"( --write-rate= Set maximum average write rate on frontend connection. Setting 0 to this option means write rate is unlimited. Default: )" << get_config()->write_rate << R"( --write-burst= Set maximum write burst size on frontend connection. Setting 0 to this option means write burst size is unlimited. Default: )" << get_config()->write_burst << R"( --worker-read-rate= Set maximum average read rate on frontend connection per worker. Setting 0 to this option means read rate is unlimited. Not implemented yet. Default: )" << get_config()->worker_read_rate << R"( --worker-read-burst= Set maximum read burst size on frontend connection per worker. Setting 0 to this option means read burst size is unlimited. Not implemented yet. Default: )" << get_config()->worker_read_burst << R"( --worker-write-rate= Set maximum average write rate on frontend connection per worker. Setting 0 to this option means write rate is unlimited. Not implemented yet. Default: )" << get_config()->worker_write_rate << R"( --worker-write-burst= Set maximum write burst size on frontend connection per worker. Setting 0 to this option means write burst size is unlimited. Not implemented yet. Default: )" << get_config()->worker_write_burst << R"( --worker-frontend-connections= Set maximum number of simultaneous connections frontend accepts. Setting 0 means unlimited. Default: )" << get_config()->worker_frontend_connections << R"( --backend-http2-connections-per-worker= Set maximum number of HTTP/2 connections per worker. The default value is 0, which means the number of backend addresses specified by -b option. --backend-http1-connections-per-host= Set maximum number of backend concurrent HTTP/1 connections per origin host. This option is meaningful when -s option is used. The origin host is determined by authority portion of requset URI (or :authority header field for HTTP/2). To limit the number of connections per frontend for default mode, use --backend-http1-connections-per-frontend. Default: )" << get_config()->downstream_connections_per_host << R"( --backend-http1-connections-per-frontend= Set maximum number of backend concurrent HTTP/1 connections per frontend. This option is only used for default mode. 0 means unlimited. To limit the number of connections per host for HTTP/2 or SPDY proxy mode (-s option), use --backend-http1-connections-per-host. Default: )" << get_config()->downstream_connections_per_frontend << R"( --rlimit-nofile= Set maximum number of open files (RLIMIT_NOFILE) to . If 0 is given, nghttpx does not set the limit. Default: )" << get_config()->rlimit_nofile << R"( --backend-request-buffer= Set buffer size used to store backend request. Default: )" << util::utos_with_unit(get_config()->downstream_request_buffer_size) << R"( --backend-response-buffer= Set buffer size used to store backend response. Default: )" << util::utos_with_unit(get_config()->downstream_response_buffer_size) << R"( Timeout: --frontend-http2-read-timeout= Specify read timeout for HTTP/2 and SPDY frontend connection. Default: )" << util::duration_str(get_config()->http2_upstream_read_timeout) << R"( --frontend-read-timeout= Specify read timeout for HTTP/1.1 frontend connection. Default: )" << util::duration_str(get_config()->upstream_read_timeout) << R"( --frontend-write-timeout= Specify write timeout for all frontend connections. Default: )" << util::duration_str(get_config()->upstream_write_timeout) << R"( --stream-read-timeout= Specify read timeout for HTTP/2 and SPDY streams. 0 means no timeout. Default: )" << util::duration_str(get_config()->stream_read_timeout) << R"( --stream-write-timeout= Specify write timeout for HTTP/2 and SPDY streams. 0 means no timeout. Default: )" << util::duration_str(get_config()->stream_write_timeout) << R"( --backend-read-timeout= Specify read timeout for backend connection. Default: )" << util::duration_str(get_config()->downstream_read_timeout) << R"( --backend-write-timeout= Specify write timeout for backend connection. Default: )" << util::duration_str(get_config()->downstream_write_timeout) << R"( --backend-keep-alive-timeout= Specify keep-alive timeout for backend connection. Default: )" << util::duration_str(get_config()->downstream_idle_read_timeout) << R"( --listener-disable-timeout= After accepting connection failed, connection listener is disabled for a given amount of time. Specifying 0 disables this feature. Default: )" << util::duration_str(get_config()->listener_disable_timeout) << R"( SSL/TLS: --ciphers= Set allowed cipher list. The format of the string is described in OpenSSL ciphers(1). -k, --insecure Don't verify backend server's certificate if -p, --client or --http2-bridge are given and --backend-no-tls is not given. --cacert= Set path to trusted CA certificate file if -p, --client or --http2-bridge are given and --backend-no-tls is not given. The file must be in PEM format. It can contain multiple certificates. If the linked OpenSSL is configured to load system wide certificates, they are loaded at startup regardless of this option. --private-key-passwd-file= Path to file that contains password for the server's private key. If none is given and the private key is password protected it'll be requested interactively. --subcert=: Specify additional certificate and private key file. nghttpx will choose certificates based on the hostname indicated by client using TLS SNI extension. This option can be used multiple times. To make OCSP stapling work, must be absolute path. --backend-tls-sni-field= Explicitly set the content of the TLS SNI extension. This will default to the backend HOST name. --dh-param-file= Path to file that contains DH parameters in PEM format. Without this option, DHE cipher suites are not available. --npn-list= Comma delimited list of ALPN protocol identifier sorted in the order of preference. That means most desirable protocol comes first. This is used in both ALPN and NPN. The parameter must be delimited by a single comma only and any white spaces are treated as a part of protocol string. Default: )" << DEFAULT_NPN_LIST << R"( --verify-client Require and verify client certificate. --verify-client-cacert= Path to file that contains CA certificates to verify client certificate. The file must be in PEM format. It can contain multiple certificates. --client-private-key-file= Path to file that contains client private key used in backend client authentication. --client-cert-file= Path to file that contains client certificate used in backend client authentication. --tls-proto-list= Comma delimited list of SSL/TLS protocol to be enabled. The following protocols are available: TLSv1.2, TLSv1.1 and TLSv1.0. The name matching is done in case-insensitive manner. The parameter must be delimited by a single comma only and any white spaces are treated as a part of protocol string. Default: )" << DEFAULT_TLS_PROTO_LIST << R"( --tls-ticket-key-file= Path to file that contains 48 bytes random data to construct TLS session ticket parameters. This options can be used repeatedly to specify multiple ticket parameters. If several files are given, only the first key is used to encrypt TLS session tickets. Other keys are accepted but server will issue new session ticket with first key. This allows session key rotation. Please note that key rotation does not occur automatically. User should rearrange files or change options values and restart nghttpx gracefully. If opening or reading given file fails, all loaded keys are discarded and it is treated as if none of this option is given. If this option is not given or an error occurred while opening or reading a file, key is generated automatically and renewed every 12hrs. At most 2 keys are stored in memory. --fetch-ocsp-response-file= Path to fetch-ocsp-response script file. It should be absolute path. Default: )" << get_config()->fetch_ocsp_response_file.get() << R"( --ocsp-update-interval= Set interval to update OCSP response cache. Default: )" << util::duration_str(get_config()->ocsp_update_interval) << R"( --no-ocsp Disable OCSP stapling. HTTP/2 and SPDY: -c, --http2-max-concurrent-streams= Set the maximum number of the concurrent streams in one HTTP/2 and SPDY session. Default: )" << get_config()->http2_max_concurrent_streams << R"( --frontend-http2-window-bits= Sets the per-stream initial window size of HTTP/2 SPDY frontend connection. For HTTP/2, the size is 2**-1. For SPDY, the size is 2**. Default: )" << get_config()->http2_upstream_window_bits << R"( --frontend-http2-connection-window-bits= Sets the per-connection window size of HTTP/2 and SPDY frontend connection. For HTTP/2, the size is 2**-1. For SPDY, the size is 2**. Default: )" << get_config()->http2_upstream_connection_window_bits << R"( --frontend-no-tls Disable SSL/TLS on frontend connections. --backend-http2-window-bits= Sets the initial window size of HTTP/2 backend connection to 2**-1. Default: )" << get_config()->http2_downstream_window_bits << R"( --backend-http2-connection-window-bits= Sets the per-connection window size of HTTP/2 backend connection to 2**-1. Default: )" << get_config()->http2_downstream_connection_window_bits << R"( --backend-no-tls Disable SSL/TLS on backend connections. --http2-no-cookie-crumbling Don't crumble cookie header field. --padding= Add at most bytes to a HTTP/2 frame payload as padding. Specify 0 to disable padding. This option is meant for debugging purpose and not intended to enhance protocol security. --no-server-push Disable HTTP/2 server push. Server push is only supported by default mode and HTTP/2 frontend. SPDY frontend does not support server push. Mode: (default mode) Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. If --frontend-no-tls is used, accept HTTP/2 and HTTP/1.1. The incoming HTTP/1.1 connection can be upgraded to HTTP/2 through HTTP Upgrade. The protocol to the backend is HTTP/1.1. -s, --http2-proxy Like default mode, but enable secure proxy mode. --http2-bridge Like default mode, but communicate with the backend in HTTP/2 over SSL/TLS. Thus the incoming all connections are converted to HTTP/2 connection and relayed to the backend. See --backend-http-proxy-uri option if you are behind the proxy and want to connect to the outside HTTP/2 proxy. --client Accept HTTP/2 and HTTP/1.1 without SSL/TLS. The incoming HTTP/1.1 connection can be upgraded to HTTP/2 connection through HTTP Upgrade. The protocol to the backend is HTTP/2. To use nghttpx as a forward proxy, use -p option instead. -p, --client-proxy Like --client option, but it also requires the request path from frontend must be an absolute URI, suitable for use as a forward proxy. Logging: -L, --log-level= Set the severity level of log output. must be one of INFO, NOTICE, WARN, ERROR and FATAL. Default: NOTICE --accesslog-file= Set path to write access log. To reopen file, send USR1 signal to nghttpx. --accesslog-syslog Send access log to syslog. If this option is used, --accesslog-file option is ignored. --accesslog-format= Specify format string for access log. The default format is combined format. The following variables are available: * $remote_addr: client IP address. * $time_local: local time in Common Log format. * $time_iso8601: local time in ISO 8601 format. * $request: HTTP request line. * $status: HTTP response status code. * $body_bytes_sent: the number of bytes sent to client as response body. * $http_: value of HTTP request header where '_' in is replaced with '-'. * $remote_port: client port. * $server_port: server port. * $request_time: request processing time in seconds with milliseconds resolution. * $pid: PID of the running process. * $alpn: ALPN identifier of the protocol which generates the response. For HTTP/1, ALPN is always http/1.1, regardless of minor version. * $ssl_cipher: cipher used for SSL/TLS connection. * $ssl_protocol: protocol for SSL/TLS connection. * $ssl_session_id: session ID for SSL/TLS connection. * $ssl_session_reused: "r" if SSL/TLS session was reused. Otherwise, "." Default: )" << DEFAULT_ACCESSLOG_FORMAT << R"( --errorlog-file= Set path to write error log. To reopen file, send USR1 signal to nghttpx. stderr will be redirected to the error log file unless --errorlog-syslog is used. Default: )" << get_config()->errorlog_file.get() << R"( --errorlog-syslog Send error log to syslog. If this option is used, --errorlog-file option is ignored. --syslog-facility= Set syslog facility to . Default: )" << str_syslog_facility(get_config()->syslog_facility) << R"( HTTP: --add-x-forwarded-for Append X-Forwarded-For header field to the downstream request. --strip-incoming-x-forwarded-for Strip X-Forwarded-For header field from inbound client requests. --no-via Don't append to Via header field. If Via header field is received, it is left unaltered. --no-location-rewrite Don't rewrite location header field on --http2-bridge, --client and default mode. For --http2-proxy and --client-proxy mode, location header field will not be altered regardless of this option. --no-host-rewrite Don't rewrite host and :authority header fields on --http2-bridge, --client and default mode. For --http2-proxy and --client-proxy mode, these headers will not be altered regardless of this option. --altsvc= Specify protocol ID, port, host and origin of alternative service. and are optional. They are advertised in alt-svc header field only in HTTP/1.1 frontend. This option can be used multiple times to specify multiple alternative services. Example: --altsvc=h2,443 --add-request-header=
Specify additional header field to add to request header set. This option just appends header field and won't replace anything already set. This option can be used several times to specify multiple header fields. Example: --add-request-header="foo: bar" --add-response-header=
Specify additional header field to add to response header set. This option just appends header field and won't replace anything already set. This option can be used several times to specify multiple header fields. Example: --add-response-header="foo: bar" --header-field-buffer= Set maximum buffer size for incoming HTTP header field list. This is the sum of header name and value in bytes. Default: )" << util::utos_with_unit(get_config()->header_field_buffer) << R"( --max-header-fields= Set maximum number of incoming HTTP header fields, which appear in one request or response header field list. Default: )" << get_config()->max_header_fields << R"( Debug: --frontend-http2-dump-request-header= Dumps request headers received by HTTP/2 frontend to the file denoted in . The output is done in HTTP/1 header field format and each header block is followed by an empty line. This option is not thread safe and MUST NOT be used with option -n, where >= 2. --frontend-http2-dump-response-header= Dumps response headers sent from HTTP/2 frontend to the file denoted in . The output is done in HTTP/1 header field format and each header block is followed by an empty line. This option is not thread safe and MUST NOT be used with option -n, where >= 2. -o, --frontend-frame-debug Print HTTP/2 frames in frontend to stderr. This option is not thread safe and MUST NOT be used with option -n=N, where N >= 2. Process: -D, --daemon Run in a background. If -D is used, the current working directory is changed to '/'. --pid-file= Set path to save PID of this program. --user= Run this program as . This option is intended to be used to drop root privileges. Misc: --conf= Load configuration from . Default: )" << get_config()->conf_path.get() << R"( -v, --version Print version and exit. -h, --help Print this help and exit. -- The argument is an integer and an optional unit (e.g., 10K is 10 * 1024). Units are K, M and G (powers of 1024). The argument is an integer and an optional unit (e.g., 1s is 1 second and 500ms is 500 milliseconds). Units are h, m, s or ms (hours, minutes, seconds and milliseconds, respectively). If a unit is omitted, a second is used as unit.)" << std::endl; } } // namespace int main(int argc, char **argv) { #ifndef NOTHREADS nghttp2::ssl::LibsslGlobalLock lock; #endif // NOTHREADS // Initialize OpenSSL before parsing options because we create // SSL_CTX there. SSL_load_error_strings(); SSL_library_init(); OpenSSL_add_all_algorithms(); OPENSSL_config(nullptr); Log::set_severity_level(NOTICE); create_config(); fill_default_config(); // We have to copy argv, since getopt_long may change its content. mod_config()->argc = argc; mod_config()->argv = new char *[argc]; for (int i = 0; i < argc; ++i) { mod_config()->argv[i] = strdup(argv[i]); } mod_config()->cwd = getcwd(nullptr, 0); if (mod_config()->cwd == nullptr) { auto error = errno; LOG(FATAL) << "failed to get current working directory: errno=" << error; exit(EXIT_FAILURE); } std::vector> cmdcfgs; while (1) { static int flag = 0; static option long_options[] = { {SHRPX_OPT_DAEMON, no_argument, nullptr, 'D'}, {SHRPX_OPT_LOG_LEVEL, required_argument, nullptr, 'L'}, {SHRPX_OPT_BACKEND, required_argument, nullptr, 'b'}, {SHRPX_OPT_HTTP2_MAX_CONCURRENT_STREAMS, required_argument, nullptr, 'c'}, {SHRPX_OPT_FRONTEND, required_argument, nullptr, 'f'}, {"help", no_argument, nullptr, 'h'}, {SHRPX_OPT_INSECURE, no_argument, nullptr, 'k'}, {SHRPX_OPT_WORKERS, required_argument, nullptr, 'n'}, {SHRPX_OPT_CLIENT_PROXY, no_argument, nullptr, 'p'}, {SHRPX_OPT_HTTP2_PROXY, no_argument, nullptr, 's'}, {"version", no_argument, nullptr, 'v'}, {SHRPX_OPT_FRONTEND_FRAME_DEBUG, no_argument, nullptr, 'o'}, {SHRPX_OPT_ADD_X_FORWARDED_FOR, no_argument, &flag, 1}, {SHRPX_OPT_FRONTEND_HTTP2_READ_TIMEOUT, required_argument, &flag, 2}, {SHRPX_OPT_FRONTEND_READ_TIMEOUT, required_argument, &flag, 3}, {SHRPX_OPT_FRONTEND_WRITE_TIMEOUT, required_argument, &flag, 4}, {SHRPX_OPT_BACKEND_READ_TIMEOUT, required_argument, &flag, 5}, {SHRPX_OPT_BACKEND_WRITE_TIMEOUT, required_argument, &flag, 6}, {SHRPX_OPT_ACCESSLOG_FILE, required_argument, &flag, 7}, {SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT, required_argument, &flag, 8}, {SHRPX_OPT_FRONTEND_HTTP2_WINDOW_BITS, required_argument, &flag, 9}, {SHRPX_OPT_PID_FILE, required_argument, &flag, 10}, {SHRPX_OPT_USER, required_argument, &flag, 11}, {"conf", required_argument, &flag, 12}, {SHRPX_OPT_SYSLOG_FACILITY, required_argument, &flag, 14}, {SHRPX_OPT_BACKLOG, required_argument, &flag, 15}, {SHRPX_OPT_CIPHERS, required_argument, &flag, 16}, {SHRPX_OPT_CLIENT, no_argument, &flag, 17}, {SHRPX_OPT_BACKEND_HTTP2_WINDOW_BITS, required_argument, &flag, 18}, {SHRPX_OPT_CACERT, required_argument, &flag, 19}, {SHRPX_OPT_BACKEND_IPV4, no_argument, &flag, 20}, {SHRPX_OPT_BACKEND_IPV6, no_argument, &flag, 21}, {SHRPX_OPT_PRIVATE_KEY_PASSWD_FILE, required_argument, &flag, 22}, {SHRPX_OPT_NO_VIA, no_argument, &flag, 23}, {SHRPX_OPT_SUBCERT, required_argument, &flag, 24}, {SHRPX_OPT_HTTP2_BRIDGE, no_argument, &flag, 25}, {SHRPX_OPT_BACKEND_HTTP_PROXY_URI, required_argument, &flag, 26}, {SHRPX_OPT_BACKEND_NO_TLS, no_argument, &flag, 27}, {SHRPX_OPT_FRONTEND_NO_TLS, no_argument, &flag, 29}, {SHRPX_OPT_BACKEND_TLS_SNI_FIELD, required_argument, &flag, 31}, {SHRPX_OPT_DH_PARAM_FILE, required_argument, &flag, 33}, {SHRPX_OPT_READ_RATE, required_argument, &flag, 34}, {SHRPX_OPT_READ_BURST, required_argument, &flag, 35}, {SHRPX_OPT_WRITE_RATE, required_argument, &flag, 36}, {SHRPX_OPT_WRITE_BURST, required_argument, &flag, 37}, {SHRPX_OPT_NPN_LIST, required_argument, &flag, 38}, {SHRPX_OPT_VERIFY_CLIENT, no_argument, &flag, 39}, {SHRPX_OPT_VERIFY_CLIENT_CACERT, required_argument, &flag, 40}, {SHRPX_OPT_CLIENT_PRIVATE_KEY_FILE, required_argument, &flag, 41}, {SHRPX_OPT_CLIENT_CERT_FILE, required_argument, &flag, 42}, {SHRPX_OPT_FRONTEND_HTTP2_DUMP_REQUEST_HEADER, required_argument, &flag, 43}, {SHRPX_OPT_FRONTEND_HTTP2_DUMP_RESPONSE_HEADER, required_argument, &flag, 44}, {SHRPX_OPT_HTTP2_NO_COOKIE_CRUMBLING, no_argument, &flag, 45}, {SHRPX_OPT_FRONTEND_HTTP2_CONNECTION_WINDOW_BITS, required_argument, &flag, 46}, {SHRPX_OPT_BACKEND_HTTP2_CONNECTION_WINDOW_BITS, required_argument, &flag, 47}, {SHRPX_OPT_TLS_PROTO_LIST, required_argument, &flag, 48}, {SHRPX_OPT_PADDING, required_argument, &flag, 49}, {SHRPX_OPT_WORKER_READ_RATE, required_argument, &flag, 50}, {SHRPX_OPT_WORKER_READ_BURST, required_argument, &flag, 51}, {SHRPX_OPT_WORKER_WRITE_RATE, required_argument, &flag, 52}, {SHRPX_OPT_WORKER_WRITE_BURST, required_argument, &flag, 53}, {SHRPX_OPT_ALTSVC, required_argument, &flag, 54}, {SHRPX_OPT_ADD_RESPONSE_HEADER, required_argument, &flag, 55}, {SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS, required_argument, &flag, 56}, {SHRPX_OPT_ACCESSLOG_SYSLOG, no_argument, &flag, 57}, {SHRPX_OPT_ERRORLOG_FILE, required_argument, &flag, 58}, {SHRPX_OPT_ERRORLOG_SYSLOG, no_argument, &flag, 59}, {SHRPX_OPT_STREAM_READ_TIMEOUT, required_argument, &flag, 60}, {SHRPX_OPT_STREAM_WRITE_TIMEOUT, required_argument, &flag, 61}, {SHRPX_OPT_NO_LOCATION_REWRITE, no_argument, &flag, 62}, {SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST, required_argument, &flag, 63}, {SHRPX_OPT_LISTENER_DISABLE_TIMEOUT, required_argument, &flag, 64}, {SHRPX_OPT_STRIP_INCOMING_X_FORWARDED_FOR, no_argument, &flag, 65}, {SHRPX_OPT_ACCESSLOG_FORMAT, required_argument, &flag, 66}, {SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND, required_argument, &flag, 67}, {SHRPX_OPT_TLS_TICKET_KEY_FILE, required_argument, &flag, 68}, {SHRPX_OPT_RLIMIT_NOFILE, required_argument, &flag, 69}, {SHRPX_OPT_BACKEND_RESPONSE_BUFFER, required_argument, &flag, 71}, {SHRPX_OPT_BACKEND_REQUEST_BUFFER, required_argument, &flag, 72}, {SHRPX_OPT_NO_HOST_REWRITE, no_argument, &flag, 73}, {SHRPX_OPT_NO_SERVER_PUSH, no_argument, &flag, 74}, {SHRPX_OPT_BACKEND_HTTP2_CONNECTIONS_PER_WORKER, required_argument, &flag, 76}, {SHRPX_OPT_FETCH_OCSP_RESPONSE_FILE, required_argument, &flag, 77}, {SHRPX_OPT_OCSP_UPDATE_INTERVAL, required_argument, &flag, 78}, {SHRPX_OPT_NO_OCSP, no_argument, &flag, 79}, {SHRPX_OPT_HEADER_FIELD_BUFFER, required_argument, &flag, 80}, {SHRPX_OPT_MAX_HEADER_FIELDS, required_argument, &flag, 81}, {SHRPX_OPT_ADD_REQUEST_HEADER, required_argument, &flag, 82}, {nullptr, 0, nullptr, 0}}; int option_index = 0; int c = getopt_long(argc, argv, "DL:b:c:f:hkn:opsv", long_options, &option_index); if (c == -1) { break; } switch (c) { case 'D': cmdcfgs.emplace_back(SHRPX_OPT_DAEMON, "yes"); break; case 'L': cmdcfgs.emplace_back(SHRPX_OPT_LOG_LEVEL, optarg); break; case 'b': cmdcfgs.emplace_back(SHRPX_OPT_BACKEND, optarg); break; case 'c': cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_MAX_CONCURRENT_STREAMS, optarg); break; case 'f': cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND, optarg); break; case 'h': print_help(std::cout); exit(EXIT_SUCCESS); case 'k': cmdcfgs.emplace_back(SHRPX_OPT_INSECURE, "yes"); break; case 'n': #ifdef NOTHREADS LOG(WARN) << "Threading disabled at build time, no threads created."; #else cmdcfgs.emplace_back(SHRPX_OPT_WORKERS, optarg); #endif // NOTHREADS break; case 'o': cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_FRAME_DEBUG, "yes"); break; case 'p': cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_PROXY, "yes"); break; case 's': cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_PROXY, "yes"); break; case 'v': print_version(std::cout); exit(EXIT_SUCCESS); case '?': util::show_candidates(argv[optind - 1], long_options); exit(EXIT_FAILURE); case 0: switch (flag) { case 1: // --add-x-forwarded-for cmdcfgs.emplace_back(SHRPX_OPT_ADD_X_FORWARDED_FOR, "yes"); break; case 2: // --frontend-http2-read-timeout cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_READ_TIMEOUT, optarg); break; case 3: // --frontend-read-timeout cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_READ_TIMEOUT, optarg); break; case 4: // --frontend-write-timeout cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_WRITE_TIMEOUT, optarg); break; case 5: // --backend-read-timeout cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_READ_TIMEOUT, optarg); break; case 6: // --backend-write-timeout cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_WRITE_TIMEOUT, optarg); break; case 7: cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_FILE, optarg); break; case 8: // --backend-keep-alive-timeout cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT, optarg); break; case 9: // --frontend-http2-window-bits cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_WINDOW_BITS, optarg); break; case 10: cmdcfgs.emplace_back(SHRPX_OPT_PID_FILE, optarg); break; case 11: cmdcfgs.emplace_back(SHRPX_OPT_USER, optarg); break; case 12: // --conf mod_config()->conf_path = strcopy(optarg); break; case 14: // --syslog-facility cmdcfgs.emplace_back(SHRPX_OPT_SYSLOG_FACILITY, optarg); break; case 15: // --backlog cmdcfgs.emplace_back(SHRPX_OPT_BACKLOG, optarg); break; case 16: // --ciphers cmdcfgs.emplace_back(SHRPX_OPT_CIPHERS, optarg); break; case 17: // --client cmdcfgs.emplace_back(SHRPX_OPT_CLIENT, "yes"); break; case 18: // --backend-http2-window-bits cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_WINDOW_BITS, optarg); break; case 19: // --cacert cmdcfgs.emplace_back(SHRPX_OPT_CACERT, optarg); break; case 20: // --backend-ipv4 cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_IPV4, "yes"); break; case 21: // --backend-ipv6 cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_IPV6, "yes"); break; case 22: // --private-key-passwd-file cmdcfgs.emplace_back(SHRPX_OPT_PRIVATE_KEY_PASSWD_FILE, optarg); break; case 23: // --no-via cmdcfgs.emplace_back(SHRPX_OPT_NO_VIA, "yes"); break; case 24: // --subcert cmdcfgs.emplace_back(SHRPX_OPT_SUBCERT, optarg); break; case 25: // --http2-bridge cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_BRIDGE, "yes"); break; case 26: // --backend-http-proxy-uri cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP_PROXY_URI, optarg); break; case 27: // --backend-no-tls cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_NO_TLS, "yes"); break; case 29: // --frontend-no-tls cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_NO_TLS, "yes"); break; case 31: // --backend-tls-sni-field cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_TLS_SNI_FIELD, optarg); break; case 33: // --dh-param-file cmdcfgs.emplace_back(SHRPX_OPT_DH_PARAM_FILE, optarg); break; case 34: // --read-rate cmdcfgs.emplace_back(SHRPX_OPT_READ_RATE, optarg); break; case 35: // --read-burst cmdcfgs.emplace_back(SHRPX_OPT_READ_BURST, optarg); break; case 36: // --write-rate cmdcfgs.emplace_back(SHRPX_OPT_WRITE_RATE, optarg); break; case 37: // --write-burst cmdcfgs.emplace_back(SHRPX_OPT_WRITE_BURST, optarg); break; case 38: // --npn-list cmdcfgs.emplace_back(SHRPX_OPT_NPN_LIST, optarg); break; case 39: // --verify-client cmdcfgs.emplace_back(SHRPX_OPT_VERIFY_CLIENT, "yes"); break; case 40: // --verify-client-cacert cmdcfgs.emplace_back(SHRPX_OPT_VERIFY_CLIENT_CACERT, optarg); break; case 41: // --client-private-key-file cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_PRIVATE_KEY_FILE, optarg); break; case 42: // --client-cert-file cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_CERT_FILE, optarg); break; case 43: // --frontend-http2-dump-request-header cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_DUMP_REQUEST_HEADER, optarg); break; case 44: // --frontend-http2-dump-response-header cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_DUMP_RESPONSE_HEADER, optarg); break; case 45: // --http2-no-cookie-crumbling cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_NO_COOKIE_CRUMBLING, "yes"); break; case 46: // --frontend-http2-connection-window-bits cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_CONNECTION_WINDOW_BITS, optarg); break; case 47: // --backend-http2-connection-window-bits cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_CONNECTION_WINDOW_BITS, optarg); break; case 48: // --tls-proto-list cmdcfgs.emplace_back(SHRPX_OPT_TLS_PROTO_LIST, optarg); break; case 49: // --padding cmdcfgs.emplace_back(SHRPX_OPT_PADDING, optarg); break; case 50: // --worker-read-rate cmdcfgs.emplace_back(SHRPX_OPT_WORKER_READ_RATE, optarg); break; case 51: // --worker-read-burst cmdcfgs.emplace_back(SHRPX_OPT_WORKER_READ_BURST, optarg); break; case 52: // --worker-write-rate cmdcfgs.emplace_back(SHRPX_OPT_WORKER_WRITE_RATE, optarg); break; case 53: // --worker-write-burst cmdcfgs.emplace_back(SHRPX_OPT_WORKER_WRITE_BURST, optarg); break; case 54: // --altsvc cmdcfgs.emplace_back(SHRPX_OPT_ALTSVC, optarg); break; case 55: // --add-response-header cmdcfgs.emplace_back(SHRPX_OPT_ADD_RESPONSE_HEADER, optarg); break; case 56: // --worker-frontend-connections cmdcfgs.emplace_back(SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS, optarg); break; case 57: // --accesslog-syslog cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_SYSLOG, "yes"); break; case 58: // --errorlog-file cmdcfgs.emplace_back(SHRPX_OPT_ERRORLOG_FILE, optarg); break; case 59: // --errorlog-syslog cmdcfgs.emplace_back(SHRPX_OPT_ERRORLOG_SYSLOG, "yes"); break; case 60: // --stream-read-timeout cmdcfgs.emplace_back(SHRPX_OPT_STREAM_READ_TIMEOUT, optarg); break; case 61: // --stream-write-timeout cmdcfgs.emplace_back(SHRPX_OPT_STREAM_WRITE_TIMEOUT, optarg); break; case 62: // --no-location-rewrite cmdcfgs.emplace_back(SHRPX_OPT_NO_LOCATION_REWRITE, "yes"); break; case 63: // --backend-http1-connections-per-host cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST, optarg); break; case 64: // --listener-disable-timeout cmdcfgs.emplace_back(SHRPX_OPT_LISTENER_DISABLE_TIMEOUT, optarg); break; case 65: // --strip-incoming-x-forwarded-for cmdcfgs.emplace_back(SHRPX_OPT_STRIP_INCOMING_X_FORWARDED_FOR, "yes"); break; case 66: // --accesslog-format cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_FORMAT, optarg); break; case 67: // --backend-http1-connections-per-frontend cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND, optarg); break; case 68: // --tls-ticket-key-file cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_FILE, optarg); break; case 69: // --rlimit-nofile cmdcfgs.emplace_back(SHRPX_OPT_RLIMIT_NOFILE, optarg); break; case 71: // --backend-response-buffer cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_RESPONSE_BUFFER, optarg); break; case 72: // --backend-request-buffer cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_REQUEST_BUFFER, optarg); break; case 73: // --no-host-rewrite cmdcfgs.emplace_back(SHRPX_OPT_NO_HOST_REWRITE, "yes"); break; case 74: // --no-server-push cmdcfgs.emplace_back(SHRPX_OPT_NO_SERVER_PUSH, "yes"); break; case 76: // --backend-http2-connections-per-worker cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_CONNECTIONS_PER_WORKER, optarg); break; case 77: // --fetch-ocsp-response-file cmdcfgs.emplace_back(SHRPX_OPT_FETCH_OCSP_RESPONSE_FILE, optarg); break; case 78: // --ocsp-update-interval cmdcfgs.emplace_back(SHRPX_OPT_OCSP_UPDATE_INTERVAL, optarg); break; case 79: // --no-ocsp cmdcfgs.emplace_back(SHRPX_OPT_NO_OCSP, "yes"); break; case 80: // --header-field-buffer cmdcfgs.emplace_back(SHRPX_OPT_HEADER_FIELD_BUFFER, optarg); break; case 81: // --max-header-fields cmdcfgs.emplace_back(SHRPX_OPT_MAX_HEADER_FIELDS, optarg); break; case 82: // --add-request-header cmdcfgs.emplace_back(SHRPX_OPT_ADD_REQUEST_HEADER, optarg); break; default: break; } break; default: break; } } if (conf_exists(get_config()->conf_path.get())) { if (load_config(get_config()->conf_path.get()) == -1) { LOG(FATAL) << "Failed to load configuration from " << get_config()->conf_path.get(); exit(EXIT_FAILURE); } } if (argc - optind >= 2) { cmdcfgs.emplace_back(SHRPX_OPT_PRIVATE_KEY_FILE, argv[optind++]); cmdcfgs.emplace_back(SHRPX_OPT_CERTIFICATE_FILE, argv[optind++]); } // First open default log files to deal with errors occurred while // parsing option values. reopen_log_files(); for (size_t i = 0, len = cmdcfgs.size(); i < len; ++i) { if (parse_config(cmdcfgs[i].first, cmdcfgs[i].second) == -1) { LOG(FATAL) << "Failed to parse command-line argument."; exit(EXIT_FAILURE); } } if (get_config()->accesslog_syslog || get_config()->errorlog_syslog) { openlog("nghttpx", LOG_NDELAY | LOG_NOWAIT | LOG_PID, get_config()->syslog_facility); } if (reopen_log_files() != 0) { LOG(FATAL) << "Failed to open log file"; exit(EXIT_FAILURE); } redirect_stderr_to_errorlog(); if (get_config()->uid != 0) { if (log_config()->accesslog_fd != -1 && fchown(log_config()->accesslog_fd, get_config()->uid, get_config()->gid) == -1) { auto error = errno; LOG(WARN) << "Changing owner of access log file failed: " << strerror(error); } if (log_config()->errorlog_fd != -1 && fchown(log_config()->errorlog_fd, get_config()->uid, get_config()->gid) == -1) { auto error = errno; LOG(WARN) << "Changing owner of error log file failed: " << strerror(error); } } if (get_config()->http2_upstream_dump_request_header_file) { auto path = get_config()->http2_upstream_dump_request_header_file.get(); auto f = open_file_for_write(path); if (f == nullptr) { LOG(FATAL) << "Failed to open http2 upstream request header file: " << path; exit(EXIT_FAILURE); } mod_config()->http2_upstream_dump_request_header = f; if (get_config()->uid != 0) { if (chown(path, get_config()->uid, get_config()->gid) == -1) { auto error = errno; LOG(WARN) << "Changing owner of http2 upstream request header file " << path << " failed: " << strerror(error); } } } if (get_config()->http2_upstream_dump_response_header_file) { auto path = get_config()->http2_upstream_dump_response_header_file.get(); auto f = open_file_for_write(path); if (f == nullptr) { LOG(FATAL) << "Failed to open http2 upstream response header file: " << path; exit(EXIT_FAILURE); } mod_config()->http2_upstream_dump_response_header = f; if (get_config()->uid != 0) { if (chown(path, get_config()->uid, get_config()->gid) == -1) { auto error = errno; LOG(WARN) << "Changing owner of http2 upstream response header file" << " " << path << " failed: " << strerror(error); } } } if (get_config()->npn_list.empty()) { mod_config()->npn_list = parse_config_str_list(DEFAULT_NPN_LIST); } if (get_config()->tls_proto_list.empty()) { mod_config()->tls_proto_list = parse_config_str_list(DEFAULT_TLS_PROTO_LIST); } mod_config()->tls_proto_mask = ssl::create_tls_proto_mask(get_config()->tls_proto_list); mod_config()->alpn_prefs = ssl::set_alpn_prefs(get_config()->npn_list); if (get_config()->backend_ipv4 && get_config()->backend_ipv6) { LOG(FATAL) << "--backend-ipv4 and --backend-ipv6 cannot be used at the " << "same time."; exit(EXIT_FAILURE); } if (get_config()->worker_frontend_connections == 0) { mod_config()->worker_frontend_connections = std::numeric_limits::max(); } if (get_config()->http2_proxy + get_config()->http2_bridge + get_config()->client_proxy + get_config()->client > 1) { LOG(FATAL) << "--http2-proxy, --http2-bridge, --client-proxy and --client " << "cannot be used at the same time."; exit(EXIT_FAILURE); } if (get_config()->client || get_config()->client_proxy) { mod_config()->client_mode = true; mod_config()->upstream_no_tls = true; } if (get_config()->client_mode || get_config()->http2_bridge) { mod_config()->downstream_proto = PROTO_HTTP2; } else { mod_config()->downstream_proto = PROTO_HTTP; } if (!get_config()->upstream_no_tls && (!get_config()->private_key_file || !get_config()->cert_file)) { print_usage(std::cerr); LOG(FATAL) << "Too few arguments"; exit(EXIT_FAILURE); } if (!get_config()->upstream_no_tls && !get_config()->no_ocsp) { struct stat buf; if (stat(get_config()->fetch_ocsp_response_file.get(), &buf) != 0) { mod_config()->no_ocsp = true; LOG(WARN) << "--fetch-ocsp-response-file: " << get_config()->fetch_ocsp_response_file.get() << " not found. OCSP stapling has been disabled."; } } if (get_config()->downstream_addr_groups.empty()) { DownstreamAddr addr; addr.host = strcopy(DEFAULT_DOWNSTREAM_HOST); addr.port = DEFAULT_DOWNSTREAM_PORT; DownstreamAddrGroup g("/"); g.addrs.push_back(std::move(addr)); mod_config()->downstream_addr_groups.push_back(std::move(g)); } else if (get_config()->downstream_proto == PROTO_HTTP2 || get_config()->http2_proxy || get_config()->client_proxy) { // We don't support host mapping in these cases. Move all // non-catch-all patterns to catch-all pattern for HTTP/2 backend DownstreamAddrGroup catch_all("/"); for (auto &g : mod_config()->downstream_addr_groups) { std::move(std::begin(g.addrs), std::end(g.addrs), std::back_inserter(catch_all.addrs)); } std::vector().swap( mod_config()->downstream_addr_groups); mod_config()->downstream_addr_groups.push_back(std::move(catch_all)); } if (LOG_ENABLED(INFO)) { LOG(INFO) << "Resolving backend address"; } ssize_t catch_all_group = -1; for (size_t i = 0; i < mod_config()->downstream_addr_groups.size(); ++i) { auto &g = mod_config()->downstream_addr_groups[i]; if (g.pattern == "/") { catch_all_group = i; } if (LOG_ENABLED(INFO)) { LOG(INFO) << "Host-path pattern: group " << i << ": '" << g.pattern << "'"; for (auto &addr : g.addrs) { LOG(INFO) << "group " << i << " -> " << addr.host.get() << (addr.host_unix ? "" : ":" + util::utos(addr.port)); } } } if (catch_all_group == -1) { LOG(FATAL) << "-b: No catch-all backend address is configured"; exit(EXIT_FAILURE); } mod_config()->downstream_addr_group_catch_all = catch_all_group; if (LOG_ENABLED(INFO)) { LOG(INFO) << "Catch-all pattern is group " << catch_all_group; } for (auto &g : mod_config()->downstream_addr_groups) { for (auto &addr : g.addrs) { if (addr.host_unix) { // for AF_UNIX socket, we use "localhost" as host for backend // hostport. This is used as Host header field to backend and // not going to be passed to any syscalls. addr.hostport = strcopy(util::make_hostport("localhost", get_config()->port)); auto path = addr.host.get(); auto pathlen = strlen(path); if (pathlen + 1 > sizeof(addr.addr.un.sun_path)) { LOG(FATAL) << "UNIX domain socket path " << path << " is too long > " << sizeof(addr.addr.un.sun_path); exit(EXIT_FAILURE); } LOG(INFO) << "Use UNIX domain socket path " << path << " for backend connection"; addr.addr.un.sun_family = AF_UNIX; // copy path including terminal NULL std::copy_n(path, pathlen + 1, addr.addr.un.sun_path); addr.addrlen = sizeof(addr.addr.un); continue; } addr.hostport = strcopy(util::make_hostport(addr.host.get(), addr.port)); if (resolve_hostname( &addr.addr, &addr.addrlen, addr.host.get(), addr.port, get_config()->backend_ipv4 ? AF_INET : (get_config()->backend_ipv6 ? AF_INET6 : AF_UNSPEC)) == -1) { exit(EXIT_FAILURE); } } } if (get_config()->downstream_http_proxy_host) { if (LOG_ENABLED(INFO)) { LOG(INFO) << "Resolving backend http proxy address"; } if (resolve_hostname(&mod_config()->downstream_http_proxy_addr, &mod_config()->downstream_http_proxy_addrlen, get_config()->downstream_http_proxy_host.get(), get_config()->downstream_http_proxy_port, AF_UNSPEC) == -1) { exit(EXIT_FAILURE); } } if (get_config()->downstream_proto == PROTO_HTTP2 && get_config()->http2_downstream_connections_per_worker == 0) { mod_config()->http2_downstream_connections_per_worker = get_config()->downstream_addr_groups[0].addrs.size(); } if (get_config()->rlimit_nofile) { struct rlimit lim = {static_cast(get_config()->rlimit_nofile), static_cast(get_config()->rlimit_nofile)}; if (setrlimit(RLIMIT_NOFILE, &lim) != 0) { auto error = errno; LOG(WARN) << "Setting rlimit-nofile failed: " << strerror(error); } } if (get_config()->upstream_frame_debug) { // To make it sync to logging set_output(stderr); if (isatty(fileno(stdout))) { set_color_output(true); } reset_timer(); } struct sigaction act; memset(&act, 0, sizeof(struct sigaction)); act.sa_handler = SIG_IGN; sigaction(SIGPIPE, &act, nullptr); event_loop(); LOG(NOTICE) << "Shutdown momentarily"; return 0; } } // namespace shrpx int main(int argc, char **argv) { return shrpx::main(argc, argv); }