--- rxvt-unicode/src/rxvtd.C 2003/11/24 17:28:08 1.1 +++ rxvt-unicode/src/rxvtd.C 2010/07/25 00:47:58 1.49 @@ -1,67 +1,129 @@ -#include "rxvtlib.h" -#include "rxvtdaemon.h" -#include "iom.h" +/*----------------------------------------------------------------------* + * File: rxvtd.C + *----------------------------------------------------------------------* + * + * All portions of code are copyright by their respective author/s. + * Copyright (c) 2003-2007 Marc Lehmann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + *----------------------------------------------------------------------*/ +#include "../config.h" #include #include +#include +#include #include +#include +#include +#include #include #include +#if defined(ENABLE_FRILLS) && defined(_POSIX_MEMLOCK) && _POSIX_MEMLOCK > 0 +# define ENABLE_MLOCK 1 +#endif + +#if ENABLE_MLOCK +# include +#endif + +#include + +#include "rxvt.h" +#include "rxvtdaemon.h" +#include "libptytty.h" + struct server : rxvt_connection { - void read_cb (io_watcher &w, short revents); io_watcher read_ev; + log_callback log_cb; + getfd_callback getfd_cb; + + void read_cb (ev::io &w, int revents); ev::io read_ev; + void log_msg (const char *msg); + int getfd (int remote_fd); server (int fd) - : read_ev (this, &server::read_cb) { + read_ev.set (this); + log_cb.set (this); + getfd_cb.set (this); + this->fd = fd; - read_ev.start (fd, EVENT_READ); + fcntl (fd, F_SETFD, FD_CLOEXEC); + fcntl (fd, F_SETFL, 0); + read_ev.start (fd, ev::READ); } - void err (); + void err (const char *format = 0, ...); }; -struct listener { +struct unix_listener { int fd; - void accept_cb (io_watcher &w, short revents); io_watcher accept_ev; + void accept_cb (ev::io &w, int revents); ev::io accept_ev; - listener (); + unix_listener (const char *sockname); }; -listener::listener () -: accept_ev (this, &listener::accept_cb) +unix_listener::unix_listener (const char *sockname) { - if ((fd = socket (PF_LOCAL, SOCK_STREAM, 0)) < 0) + accept_ev.set (this); + + sockaddr_un sa; + + if (strlen (sockname) >= sizeof(sa.sun_path)) + { + fputs ("socket name too long, aborting.\n", stderr); + exit (EXIT_FAILURE); + } + + if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) { perror ("unable to create listening socket"); exit (EXIT_FAILURE); } - sockaddr_un sa; + fcntl (fd, F_SETFD, FD_CLOEXEC); + fcntl (fd, F_SETFL, O_NONBLOCK); sa.sun_family = AF_UNIX; - strcpy (sa.sun_path, rxvt_connection::unix_sockname ()); + strcpy (sa.sun_path, sockname); unlink (rxvt_connection::unix_sockname ()); + mode_t omask = umask (0077); + if (bind (fd, (sockaddr *)&sa, sizeof (sa))) { perror ("unable to bind listening socket"); exit (EXIT_FAILURE); } + umask (omask); + if (listen (fd, 5)) { perror ("unable to listen on socket"); exit (EXIT_FAILURE); } - accept_ev.start (fd, EVENT_READ); + accept_ev.start (fd, ev::READ); } -void listener::accept_cb (io_watcher &w, short revents) +void unix_listener::accept_cb (ev::io &w, int revents) { int fd2 = accept (fd, 0, 0); @@ -69,40 +131,174 @@ new server (fd2); } -void server::err () +int server::getfd (int remote_fd) { + send ("GETFD"); + send (remote_fd); + return ptytty::recv_fd (fd); +} + +void server::log_msg (const char *msg) +{ + send ("MSG"), send (msg); +} + +void server::err (const char *format, ...) +{ + if (format) + { + char err[1024]; + + va_list ap; + va_start (ap, format); + vsnprintf (err, 1024, format, ap); + va_end (ap); + + log_msg (err); + } + + send ("END"), send (0); close (fd); delete this; } -void server::read_cb (io_watcher &w, short revents) +void server::read_cb (ev::io &w, int revents) { - token cmd; + auto_str tok; - if (recv (cmd)) + if (recv (tok)) { - if (!strcmp (cmd, "NEW")) + if (!strcmp (tok, "NEW")) { + stringvec *argv = new stringvec; + stringvec *envv = new stringvec; + + for (;;) + { + if (!recv (tok)) + return err (); + + if (!strcmp (tok, "END")) + break; + else if (!strcmp (tok, "ENV") && recv (tok)) + envv->push_back (strdup (tok)); + else if (!strcmp (tok, "ARG") && recv (tok)) + argv->push_back (strdup (tok)); + else + return err ("protocol error: unexpected NEW token.\n"); + } + + envv->push_back (0); + + { + rxvt_term *term = new rxvt_term; + + term->log_hook = &log_cb; + term->getfd_hook = &getfd_cb; + + bool success = true; + + try + { + term->init (argv, envv); + } + catch (const class rxvt_failure_exception &e) + { + success = false; + } + + term->log_hook = 0; + + chdir ("/"); // init might change to different working directory + + if (!success) + term->destroy (); + + send ("END"); send (success ? 1 : 0); + } } else - err (); + return err ("protocol error: request '%s' unsupported.\n", (char *)tok); } else - err (); + return err (); } int -main(int argc, const char *const *argv) +main (int argc, const char *const *argv) { - listener l; - iom.loop (); + int opt_fork, opt_opendisplay, opt_quiet; +#if ENABLE_MLOCK + int opt_lock; +#endif -#if 0 - if (rxvt_init(argc, argv) == NULL) - return EXIT_FAILURE; + rxvt_init (); - dR; - rxvt_main_loop(aR); /* main processing loop */ + for (int i = 1; i < argc; i++) + { + if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) + opt_fork = 1; + else if (!strcmp (argv [i], "-o") || !strcmp (argv [i], "--opendisplay")) + opt_opendisplay = 1; + else if (!strcmp (argv [i], "-q") || !strcmp (argv [i], "--quiet")) + opt_quiet = 1; +#if ENABLE_MLOCK + else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) + opt_lock = 1; #endif + else + { + rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); + return EXIT_FAILURE; + } + } + + // optionally open display and never release it. + if (opt_opendisplay) + if (const char *dpy = getenv ("DISPLAY")) + displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? + + char *sockname = rxvt_connection::unix_sockname (); + unix_listener l (sockname); + + chdir ("/"); + + if (!opt_quiet) + { + printf ("rxvt-unicode daemon listening on %s.\n", sockname); + fflush (stdout); + } + + free (sockname); + + pid_t pid = 0; + if (opt_fork) + { + pid = fork (); + } + +#if ENABLE_MLOCK + // Optionally perform an mlockall so this process does not get swapped out. + if (opt_lock && !pid) + if (mlockall (MCL_CURRENT | MCL_FUTURE) < 0) + perror ("unable to lock into ram"); +#endif + + if (opt_fork) + { + if (pid < 0) + { + rxvt_log ("unable to fork daemon, aborting.\n"); + return EXIT_FAILURE; + } + else if (pid > 0) + _exit (EXIT_SUCCESS); + + ev_default_fork (); + } + + ev_loop (0); + return EXIT_SUCCESS; } +