+++ /dev/null
-/* bundle-main.c -- X server launcher
- $Id: bundle-main.c,v 1.17 2003/09/11 00:17:10 jharper Exp $
-
- Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
-
- 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 ABOVE LISTED COPYRIGHT
- HOLDER(S) 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.
-
- Except as contained in this notice, the name(s) of the above
- copyright holders shall not be used in advertising or otherwise to
- promote the sale, use or other dealings in this Software without
- prior written authorization.
-
- Parts of this file are derived from xdm, which has this copyright:
-
- Copyright 1988, 1998 The Open Group
-
- Permission to use, copy, modify, distribute, and sell this software
- and its documentation for any purpose is hereby granted without fee,
- provided that the above copyright notice appear in all copies and
- that both that copyright notice and this permission notice appear in
- supporting documentation.
-
- 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 OPEN GROUP 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.
-
- Except as contained in this notice, the name of The Open Group shall
- not be used in advertising or otherwise to promote the sale, use or
- other dealings in this Software without prior written authorization
- from The Open Group. */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/socket.h>
-#include <sys/utsname.h>
-#include <ifaddrs.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <time.h>
-#include <sys/wait.h>
-#include <setjmp.h>
-#include <sys/ioctl.h>
-
-#include <X11/Xlib.h>
-#include <X11/Xauth.h>
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <SystemConfiguration/SystemConfiguration.h>
-
-#define X_SERVER "/usr/X11R6/bin/Xquartz"
-#define XTERM_PATH "/usr/X11R6/bin/xterm"
-#define WM_PATH "/usr/X11R6/bin/quartz-wm"
-#define DEFAULT_XINITRC "/usr/X11R6/lib/X11/xinit/xinitrc"
-#include <mach-o/dyld.h>
-
-/* what xinit does */
-#ifndef SHELL
-# define SHELL "sh"
-#endif
-
-#undef FALSE
-#define FALSE 0
-#undef TRUE
-#define TRUE 1
-
-#define MAX_DISPLAYS 64
-
-static int server_pid = -1, client_pid = -1;
-static int xinit_kills_server = FALSE;
-static jmp_buf exit_continuation;
-static const char *server_name = NULL;
-static Display *server_dpy;
-
-static char *auth_file;
-
-typedef struct addr_list_struct addr_list;
-
-struct addr_list_struct {
- addr_list *next;
- Xauth auth;
-};
-
-static addr_list *addresses;
-
-\f
-/* Utility functions. */
-
-/* Return the current host name. Matches what Xlib does. */
-static char *
-host_name (void)
-{
-#ifdef NEED_UTSNAME
- static struct utsname name;
-
- uname(&name);
-
- return name.nodename;
-#else
- static char buf[100];
-
- gethostname(buf, sizeof(buf));
-
- return buf;
-#endif
-}
-
-static int
-read_boolean_pref (CFStringRef name, int default_)
-{
- int value;
- Boolean ok;
-
- value = CFPreferencesGetAppBooleanValue (name,
- CFSTR ("com.apple.x11"), &ok);
- return ok ? value : default_;
-}
-
-static inline int
-binary_equal (const void *a, const void *b, int length)
-{
- return memcmp (a, b, length) == 0;
-}
-
-static inline void *
-binary_dup (const void *a, int length)
-{
- void *b = malloc (length);
- if (b != NULL)
- memcpy (b, a, length);
- return b;
-}
-
-static inline void
-binary_free (void *data, int length)
-{
- if (data != NULL)
- free (data);
-}
-
-\f
-/* Functions for managing the authentication entries. */
-
-/* Returns true if something matching AUTH is in our list of auth items */
-static int
-check_auth_item (Xauth *auth)
-{
- addr_list *a;
-
- for (a = addresses; a != NULL; a = a->next)
- {
- if (a->auth.family == auth->family
- && a->auth.address_length == auth->address_length
- && binary_equal (a->auth.address, auth->address, auth->address_length)
- && a->auth.number_length == auth->number_length
- && binary_equal (a->auth.number, auth->number, auth->number_length)
- && a->auth.name_length == auth->name_length
- && binary_equal (a->auth.name, auth->name, auth->name_length))
- {
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-/* Add one item to our list of auth items. */
-static void
-add_auth_item (Xauth *auth)
-{
- addr_list *a = malloc (sizeof (addr_list));
-
- a->auth.family = auth->family;
- a->auth.address_length = auth->address_length;
- a->auth.address = binary_dup (auth->address, auth->address_length);
- a->auth.number_length = auth->number_length;
- a->auth.number = binary_dup (auth->number, auth->number_length);
- a->auth.name_length = auth->name_length;
- a->auth.name = binary_dup (auth->name, auth->name_length);
- a->auth.data_length = auth->data_length;
- a->auth.data = binary_dup (auth->data, auth->data_length);
-
- a->next = addresses;
- addresses = a;
-}
-
-/* Free all allocated auth items. */
-static void
-free_auth_items (void)
-{
- addr_list *a;
-
- while ((a = addresses) != NULL)
- {
- addresses = a->next;
-
- binary_free (a->auth.address, a->auth.address_length);
- binary_free (a->auth.number, a->auth.number_length);
- binary_free (a->auth.name, a->auth.name_length);
- binary_free (a->auth.data, a->auth.data_length);
- free (a);
- }
-}
-
-/* Add the unix domain auth item. */
-static void
-define_local (Xauth *auth)
-{
- char *host = host_name ();
-
-#ifdef DEBUG
- fprintf (stderr, "x11: hostname is %s\n", host);
-#endif
-
- auth->family = FamilyLocal;
- auth->address_length = strlen (host);
- auth->address = host;
-
- add_auth_item (auth);
-}
-
-/* Add the tcp auth item. */
-static void
-define_named (Xauth *auth, const char *name)
-{
- struct ifaddrs *addrs, *ptr;
-
- if (getifaddrs (&addrs) != 0)
- return;
-
- for (ptr = addrs; ptr != NULL; ptr = ptr->ifa_next)
- {
- if (ptr->ifa_addr->sa_family != AF_INET)
- continue;
-
- auth->family = FamilyInternet;
- auth->address_length = sizeof (struct sockaddr_in);
- auth->address = (char *) &(((struct sockaddr_in *) ptr->ifa_addr)->sin_addr);
-
-#ifdef DEBUG
- fprintf (stderr, "x11: ipaddr is %d.%d.%d.%d\n",
- (unsigned char) auth->address[0],
- (unsigned char) auth->address[1],
- (unsigned char) auth->address[2],
- (unsigned char) auth->address[3]);
-#endif
-
- add_auth_item (auth);
- }
-
- freeifaddrs (addrs);
-}
-
-/* Parse the display number from NAME and add it to AUTH. */
-static void
-set_auth_number (Xauth *auth, const char *name)
-{
- char *colon;
- char *dot, *number;
-
- colon = strrchr(name, ':');
- if (colon != NULL)
- {
- colon++;
- dot = strchr(colon, '.');
-
- if (dot != NULL)
- auth->number_length = dot - colon;
- else
- auth->number_length = strlen (colon);
-
- number = malloc (auth->number_length + 1);
- if (number != NULL)
- {
- strncpy (number, colon, auth->number_length);
- number[auth->number_length] = '\0';
- }
- else
- {
- auth->number_length = 0;
- }
-
- auth->number = number;
- }
-}
-
-/* Put 128 bits of random data into DATA. If possible, it will be "high
- quality" */
-static int
-generate_mit_magic_cookie (char data[16])
-{
- int fd, ret, i;
- long *ldata = (long *) data;
-
- fd = open ("/dev/random", O_RDONLY);
- if (fd > 0)
- {
- ret = read (fd, data, 16);
- if (ret == 16)
- return TRUE;
-
- close (fd);
- }
-
- /* fall back to the usual crappy rng */
-
- srand48 (getpid () ^ time (NULL));
-
- for (i = 0; i < 4; i++)
- ldata[i] = lrand48 ();
-
- return TRUE;
-}
-
-/* Create the keys we'll be using for the display named NAME. */
-static int
-make_auth_keys (const char *name)
-{
- Xauth auth;
- char key[16];
-
- if (auth_file == NULL)
- return FALSE;
-
- auth.name = "MIT-MAGIC-COOKIE-1";
- auth.name_length = strlen (auth.name);
-
- if (!generate_mit_magic_cookie (key))
- {
- auth_file = NULL;
- return FALSE;
- }
-
- auth.data = key;
- auth.data_length = 16;
-
- set_auth_number (&auth, name);
-
- define_named (&auth, host_name ());
- define_local (&auth);
-
- free (auth.number);
-
- return TRUE;
-}
-
-/* If ADD-ENTRIES is true, merge our auth entries into the existing
- Xauthority file. If ADD-ENTRIES is false, remove our entries. */
-static int
-write_auth_file (int add_entries)
-{
- char *home, newname[1024];
- int fd, ret;
- FILE *new_fh, *old_fh;
- addr_list *addr;
- Xauth *auth;
-
- if (auth_file == NULL)
- return FALSE;
-
- home = getenv ("HOME");
- if (home == NULL)
- {
- auth_file = NULL;
- return FALSE;
- }
-
- snprintf (newname, sizeof (newname), "%s/.XauthorityXXXXXX", home);
- mktemp (newname);
-
- if (XauLockAuth (auth_file, 1, 2, 10) != LOCK_SUCCESS)
- {
- /* FIXME: do something here? */
-
- auth_file = NULL;
- return FALSE;
- }
-
- fd = open (newname, O_WRONLY | O_CREAT | O_TRUNC, 0600);
- if (fd >= 0)
- {
- new_fh = fdopen (fd, "w");
- if (new_fh != NULL)
- {
- if (add_entries)
- {
- for (addr = addresses; addr != NULL; addr = addr->next)
- {
- XauWriteAuth (new_fh, &addr->auth);
- }
- }
-
- old_fh = fopen (auth_file, "r");
- if (old_fh != NULL)
- {
- while ((auth = XauReadAuth (old_fh)) != NULL)
- {
- if (!check_auth_item (auth))
- XauWriteAuth (new_fh, auth);
- XauDisposeAuth (auth);
- }
- fclose (old_fh);
- }
-
- fclose (new_fh);
- unlink (auth_file);
-
- ret = rename (newname, auth_file);
-
- if (ret != 0)
- auth_file = NULL;
-
- XauUnlockAuth (auth_file);
- return ret == 0;
- }
-
- close (fd);
- }
-
- XauUnlockAuth (auth_file);
- auth_file = NULL;
- return FALSE;
-}
-
-\f
-/* Subprocess management functions. */
-
-static int
-start_server (char **xargv)
-{
- int child;
-
- child = fork ();
-
- switch (child)
- {
- case -1: /* error */
- perror ("fork");
- return FALSE;
-
- case 0: /* child */
- execv (X_SERVER, xargv);
- perror ("Couldn't exec " X_SERVER);
- _exit (1);
-
- default: /* parent */
- server_pid = child;
- return TRUE;
- }
-}
-
-static int
-wait_for_server (void)
-{
- int count = 100;
-
- while (count-- > 0)
- {
- int status;
-
- server_dpy = XOpenDisplay (server_name);
- if (server_dpy != NULL)
- return TRUE;
-
- if (waitpid (server_pid, &status, WNOHANG) == server_pid)
- return FALSE;
-
- sleep (1);
- }
-
- return FALSE;
-}
-
-static int
-start_client (void)
-{
- int child;
-
- child = fork ();
-
- switch (child)
- {
- char *tem, buf[1024];
-
- case -1: /* error */
- perror ("fork");
- return FALSE;
-
- case 0: /* child */
- /* cd $HOME */
- tem = getenv ("HOME");
- if (tem != NULL)
- chdir (tem);
-
- /* Setup environment */
-
- setenv ("DISPLAY", server_name, TRUE);
- tem = getenv ("PATH");
- if (tem != NULL && tem[0] != NULL)
- snprintf (buf, sizeof (buf), "%s:/usr/X11R6/bin", tem);
- else
- snprintf (buf, sizeof (buf), "/bin:/usr/bin:/usr/X11R6/bin");
- setenv ("PATH", buf, TRUE);
-
-#if 1
- setenv("GTK_USE_XFT","1",0);
- system(WM_PATH " &");
- execl("/usr/local/bin/synfigstudio","/usr/local/bin/synfigstudio",NULL);
-
-#else
- /* First look for .xinitrc in user's home directory. */
-
- tem = getenv ("HOME");
- if (tem != NULL)
- {
- snprintf (buf, sizeof (buf), "%s/.xinitrc", tem);
- if (access (buf, R_OK) == 0)
- execlp (SHELL, SHELL, buf, NULL);
- }
-
- /* Then try the default xinitrc in the lib directory. */
-
- if (access (DEFAULT_XINITRC, R_OK) == 0)
- execlp (SHELL, SHELL, DEFAULT_XINITRC, NULL);
-
- /* Then fallback to hardcoding an xterm and the window manager. */
-
- system (XTERM_PATH " &");
- execl (WM_PATH, WM_PATH, NULL);
-
-#endif
- perror ("exec");
- _exit (1);
-
- default: /* parent */
- client_pid = child;
- return TRUE;
- }
-}
-
-static void
-sigchld_handler (int sig)
-{
- int pid, status;
-
-again:
- pid = waitpid (WAIT_ANY, &status, WNOHANG);
-
- if (pid > 0)
- {
- if (pid == server_pid)
- {
- server_pid = -1;
-
- if (client_pid >= 0)
- kill (client_pid, SIGTERM);
- }
- else if (pid == client_pid)
- {
- client_pid = -1;
-
- if (server_pid >= 0 && xinit_kills_server)
- kill (server_pid, SIGTERM);
- }
- goto again;
- }
-
- if (server_pid == -1 && client_pid == -1)
- longjmp (exit_continuation, 1);
-
- signal (SIGCHLD, sigchld_handler);
-}
-
-\f
-/* Server utilities. */
-
-static Boolean
-display_exists_p (int number)
-{
- char buf[64];
- void *conn;
- char *fullname = NULL;
- int idisplay, iscreen;
- char *conn_auth_name, *conn_auth_data;
- int conn_auth_namelen, conn_auth_datalen;
-
- extern void *_X11TransConnectDisplay ();
- extern void _XDisconnectDisplay ();
-
- /* Since connecting to the display waits for a few seconds if the
- display doesn't exist, check for trivial non-existence - if the
- socket in /tmp exists or not.. (note: if the socket exists, the
- server may still not, so we need to try to connect in that case..) */
-
- sprintf (buf, "/tmp/.X11-unix/X%d", number);
- if (access (buf, F_OK) != 0)
- return FALSE;
-
- /* This is a private function that we shouldn't really be calling,
- but it's the best way to see if the server exists (without
- needing to hold the necessary authentication to use it) */
-
- sprintf (buf, ":%d", number);
- conn = _X11TransConnectDisplay (buf, &fullname, &idisplay, &iscreen,
- &conn_auth_name, &conn_auth_namelen,
- &conn_auth_data, &conn_auth_datalen);
- if (conn == NULL)
- return FALSE;
-
- _XDisconnectDisplay (conn);
- return TRUE;
-}
-
-\f
-/* Monitoring when the system's ip addresses change. */
-
-static Boolean pending_timer;
-
-static void
-timer_callback (CFRunLoopTimerRef timer, void *info)
-{
- pending_timer = FALSE;
-
- /* Update authentication names. Need to write .Xauthority file first
- without the existing entries, then again with the new entries.. */
-
- write_auth_file (FALSE);
-
- free_auth_items ();
- make_auth_keys (server_name);
-
- write_auth_file (TRUE);
-}
-
-/* This function is called when the system's ip addresses may have changed. */
-static void
-ipaddr_callback (SCDynamicStoreRef store, CFArrayRef changed_keys, void *info)
-{
- if (auth_file != NULL && !pending_timer)
- {
- CFRunLoopTimerRef timer;
-
- timer = CFRunLoopTimerCreate (NULL, CFAbsoluteTimeGetCurrent () + 1.0,
- 0.0, 0, 0, timer_callback, NULL);
- CFRunLoopAddTimer (CFRunLoopGetCurrent (), timer,
- kCFRunLoopDefaultMode);
- CFRelease (timer);
-
- pending_timer = TRUE;
- }
-}
-
-/* This code adapted from "Living in a Dynamic TCP/IP Environment" technote. */
-static Boolean
-install_ipaddr_source (void)
-{
- CFRunLoopSourceRef source = NULL;
-
- SCDynamicStoreContext context = {0};
- SCDynamicStoreRef ref;
-
- ref = SCDynamicStoreCreate (NULL,
- CFSTR ("AddIPAddressListChangeCallbackSCF"),
- ipaddr_callback, &context);
-
- if (ref != NULL)
- {
- const void *keys[2];
-
- /* This should tell us when any IPV4 address changes */
- keys[0] = (SCDynamicStoreKeyCreateNetworkServiceEntity
- (NULL, kSCDynamicStoreDomainState,
- kSCCompAnyRegex, kSCEntNetIPv4));
-
- /* This should tell us when the hostname(s) change */
- keys[1] = SCDynamicStoreKeyCreateHostNames (NULL);
-
- if (keys[0] != NULL && keys[1] != NULL)
- {
- CFArrayRef pattern_array;
-
- pattern_array = CFArrayCreate (NULL, keys, 2,
- &kCFTypeArrayCallBacks);
-
- if (pattern_array != NULL)
- {
- SCDynamicStoreSetNotificationKeys (ref, NULL, pattern_array);
- source = SCDynamicStoreCreateRunLoopSource (NULL, ref, 0);
-
- CFRelease (pattern_array);
- }
-
- if (keys[0] != NULL)
- CFRelease (keys[0]);
- if (keys[1] != NULL)
- CFRelease (keys[1]);
- }
-
- CFRelease (ref);
- }
-
- if (source != NULL)
- {
- CFRunLoopAddSource (CFRunLoopGetCurrent (),
- source, kCFRunLoopDefaultMode);
- CFRelease (source);
- }
-
- return source != NULL;
-}
-
-
-\f
-/* Entrypoint. */
-int
-main (int argc, char **argv)
-{
- char **xargv;
- int i, j;
- int fd;
-
-
-
-
-
-
- xargv = alloca (sizeof (char *) * (argc + 32));
-
- if (!read_boolean_pref (CFSTR ("no_auth"), FALSE))
- auth_file = XauFileName ();
-
- /* The standard X11 behaviour is for the server to quit when the first
- client exits. But it can be useful for debugging (and to mimic our
- behaviour in the beta releases) to not do that. */
-
- xinit_kills_server = read_boolean_pref (CFSTR ("xinit_kills_server"), TRUE);
-
- for (i = 1; i < argc; i++)
- {
- if (argv[i][0] == ':')
- server_name = argv[i];
- }
-
- if (server_name == NULL)
- {
- static char name[8];
-
- /* No display number specified, so search for the first unused.
-
- There's a big old race condition here if two servers start at
- the same time, but that's fairly unlikely. We could create
- lockfiles or something, but that's seems more likely to cause
- problems than the race condition itself.. */
-
- for (i = 2; i < MAX_DISPLAYS; i++)
- {
- if (!display_exists_p (i))
- break;
- }
-
- if (i == MAX_DISPLAYS)
- {
- fprintf (stderr, "%s: couldn't allocate a display number", argv[0]);
- exit (1);
- }
-
- sprintf (name, ":%d", i);
- server_name = name;
- }
-
- if (auth_file != NULL)
- {
- /* Create new Xauth keys and add them to the .Xauthority file */
-
- make_auth_keys (server_name);
- write_auth_file (TRUE);
- }
-
- /* Construct our new argv */
-
- i = j = 0;
-
- xargv[i++] = argv[j++];
-
- if (auth_file != NULL)
- {
- xargv[i++] = "-auth";
- xargv[i++] = auth_file;
- }
-
- /* By default, don't listen on tcp sockets if Xauth is disabled. */
-
- if (read_boolean_pref (CFSTR ("nolisten_tcp"), auth_file == NULL))
- {
- xargv[i++] = "-nolisten";
- xargv[i++] = "tcp";
- }
-
- while (j < argc)
- {
- if (argv[j++][0] != ':')
- xargv[i++] = argv[j-1];
- }
-
- xargv[i++] = (char *) server_name;
- xargv[i++] = NULL;
-
- /* Detach from any controlling terminal and connect stdin to /dev/null */
-
-#ifdef TIOCNOTTY
- fd = open ("/dev/tty", O_RDONLY);
- if (fd != -1)
- {
- ioctl (fd, TIOCNOTTY, 0);
- close (fd);
- }
-#endif
-
- fd = open ("/dev/null", O_RDWR, 0);
- if (fd >= 0)
- {
- dup2 (fd, 0);
- if (fd > 0)
- close (fd);
- }
-
- if (!start_server (xargv))
- return 1;
-
- if (!wait_for_server ())
- {
- kill (server_pid, SIGTERM);
- return 1;
- }
-
- if (!start_client ())
- {
- kill (server_pid, SIGTERM);
- return 1;
- }
-
- signal (SIGCHLD, sigchld_handler);
-
- if (NSIsSymbolNameDefined("_ASKInitialize"))
- {
- NSSymbol *symbol = NSLookupAndBindSymbol("_ASKInitialize");
- if (symbol)
- {
- void (*initializeASKFunc)(void) = NSAddressOfSymbol(symbol);
- if (initializeASKFunc)
- {
- initializeASKFunc();
- }
- else
- return 666;
- }
- else return 667;
- }else
- return 668;
-
- if (setjmp (exit_continuation) == 0)
- {
- if (install_ipaddr_source ())
- CFRunLoopRun ();
- else
- while (1) pause ();
- }
-
- signal (SIGCHLD, SIG_IGN);
-
- if (auth_file != NULL)
- {
- /* Remove our Xauth keys */
-
- write_auth_file (FALSE);
- }
-
- free_auth_items ();
-
- return 0;
-}
projects / synfig.git / blobdiff