diff options
Diffstat (limited to 'xorg-server/hw/xquartz/mach-startup')
| -rw-r--r-- | xorg-server/hw/xquartz/mach-startup/bundle-main.c | 1384 |
1 files changed, 692 insertions, 692 deletions
diff --git a/xorg-server/hw/xquartz/mach-startup/bundle-main.c b/xorg-server/hw/xquartz/mach-startup/bundle-main.c index 63a185fc8..6dc7f9094 100644 --- a/xorg-server/hw/xquartz/mach-startup/bundle-main.c +++ b/xorg-server/hw/xquartz/mach-startup/bundle-main.c @@ -1,692 +1,692 @@ -/* main.c -- X application launcher - - Copyright (c) 2007 Jeremy Huddleston - Copyright (c) 2007 Apple Inc - - 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. */ - -#include <CoreFoundation/CoreFoundation.h> -#include <AvailabilityMacros.h> - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <X11/Xlib.h> -#include <unistd.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <pthread.h> -#include <stdbool.h> -#include <signal.h> - -#include <sys/socket.h> -#include <sys/un.h> - -#include <sys/time.h> -#include <fcntl.h> - -#include <mach/mach.h> -#include <mach/mach_error.h> -#include <servers/bootstrap.h> -#include "mach_startup.h" -#include "mach_startupServer.h" - -#include "launchd_fd.h" -/* From darwinEvents.c ... but don't want to pull in all the server cruft */ -void DarwinListenOnOpenFD(int fd); - -extern int noPanoramiXExtension; - -#define DEFAULT_CLIENT X11BINDIR "/xterm" -#define DEFAULT_STARTX X11BINDIR "/startx" -#define DEFAULT_SHELL "/bin/sh" - -#ifndef BUILD_DATE -#define BUILD_DATE "" -#endif -#ifndef XSERVER_VERSION -#define XSERVER_VERSION "?" -#endif - -static char __crashreporter_info_buff__[4096] = {0}; -static const char *__crashreporter_info__ = &__crashreporter_info_buff__[0]; -#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050 -// This is actually a toolchain requirement, but I'm not sure the correct check, -// but it should be fine to just only include it for Leopard and later. This line -// just tells the linker to never strip this symbol (such as for space optimization) -asm (".desc ___crashreporter_info__, 0x10"); -#endif - -static const char *__crashreporter_info__base = "X.Org X Server " XSERVER_VERSION " Build Date: " BUILD_DATE; - -static char *launchd_id_prefix = NULL; -static char *server_bootstrap_name = NULL; - -#define DEBUG 1 - -/* This is in quartzStartup.c */ -int server_main(int argc, char **argv, char **envp); - -static int execute(const char *command); -static char *command_from_prefs(const char *key, const char *default_value); - -/*** Pthread Magics ***/ -static pthread_t create_thread(void *func, void *arg) { - pthread_attr_t attr; - pthread_t tid; - - pthread_attr_init (&attr); - pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - pthread_create (&tid, &attr, func, arg); - pthread_attr_destroy (&attr); - - return tid; -} - -/*** Mach-O IPC Stuffs ***/ - -union MaxMsgSize { - union __RequestUnion__mach_startup_subsystem req; - union __ReplyUnion__mach_startup_subsystem rep; -}; - -static mach_port_t checkin_or_register(char *bname) { - kern_return_t kr; - mach_port_t mp; - - /* If we're started by launchd or the old mach_init */ - kr = bootstrap_check_in(bootstrap_port, bname, &mp); - if (kr == KERN_SUCCESS) - return mp; - - /* We probably were not started by launchd or the old mach_init */ - kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &mp); - if (kr != KERN_SUCCESS) { - fprintf(stderr, "mach_port_allocate(): %s\n", mach_error_string(kr)); - exit(EXIT_FAILURE); - } - - kr = mach_port_insert_right(mach_task_self(), mp, mp, MACH_MSG_TYPE_MAKE_SEND); - if (kr != KERN_SUCCESS) { - fprintf(stderr, "mach_port_insert_right(): %s\n", mach_error_string(kr)); - exit(EXIT_FAILURE); - } - - kr = bootstrap_register(bootstrap_port, bname, mp); - if (kr != KERN_SUCCESS) { - fprintf(stderr, "bootstrap_register(): %s\n", mach_error_string(kr)); - exit(EXIT_FAILURE); - } - - return mp; -} - -/*** $DISPLAY handoff ***/ -static int accept_fd_handoff(int connected_fd) { - int launchd_fd; - - char databuf[] = "display"; - struct iovec iov[1]; - - union { - struct cmsghdr hdr; - char bytes[CMSG_SPACE(sizeof(int))]; - } buf; - - struct msghdr msg; - struct cmsghdr *cmsg; - - iov[0].iov_base = databuf; - iov[0].iov_len = sizeof(databuf); - - msg.msg_iov = iov; - msg.msg_iovlen = 1; - msg.msg_control = buf.bytes; - msg.msg_controllen = sizeof(buf); - msg.msg_name = 0; - msg.msg_namelen = 0; - msg.msg_flags = 0; - - cmsg = CMSG_FIRSTHDR (&msg); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - cmsg->cmsg_len = CMSG_LEN(sizeof(int)); - - msg.msg_controllen = cmsg->cmsg_len; - - *((int*)CMSG_DATA(cmsg)) = -1; - - if(recvmsg(connected_fd, &msg, 0) < 0) { - fprintf(stderr, "X11.app: Error receiving $DISPLAY file descriptor. recvmsg() error: %s\n", strerror(errno)); - return -1; - } - - launchd_fd = *((int*)CMSG_DATA(cmsg)); - - return launchd_fd; -} - -typedef struct { - int fd; - string_t filename; -} socket_handoff_t; - -/* This thread accepts an incoming connection and hands off the file - * descriptor for the new connection to accept_fd_handoff() - */ -static void socket_handoff_thread(void *arg) { - socket_handoff_t *handoff_data = (socket_handoff_t *)arg; - int launchd_fd = -1; - int connected_fd; - unsigned remain; - - /* Now actually get the passed file descriptor from this connection - * If we encounter an error, keep listening. - */ - while(launchd_fd == -1) { - connected_fd = accept(handoff_data->fd, NULL, NULL); - if(connected_fd == -1) { - fprintf(stderr, "X11.app: Failed to accept incoming connection on socket (fd=%d): %s\n", handoff_data->fd, strerror(errno)); - sleep(2); - continue; - } - - launchd_fd = accept_fd_handoff(connected_fd); - if(launchd_fd == -1) - fprintf(stderr, "X11.app: Error receiving $DISPLAY file descriptor, no descriptor received? Waiting for another connection.\n"); - - close(connected_fd); - } - - close(handoff_data->fd); - unlink(handoff_data->filename); - free(handoff_data); - - /* TODO: Clean up this race better... giving xinitrc time to run... need to wait for 1.5 branch: - * - * From ajax: - * There's already an internal callback chain for setting selection [in 1.5] - * ownership. See the CallSelectionCallback at the bottom of - * ProcSetSelectionOwner, and xfixes/select.c for an example of how to hook - * into it. - */ - - remain = 3000000; - fprintf(stderr, "X11.app: Received new $DISPLAY fd: %d ... sleeping to allow xinitrc to catchup.\n", launchd_fd); - while((remain = usleep(remain)) > 0); - - fprintf(stderr, "X11.app Handing off fd to server thread via DarwinListenOnOpenFD(%d)\n", launchd_fd); - DarwinListenOnOpenFD(launchd_fd); -} - -static int create_socket(char *filename_out) { - struct sockaddr_un servaddr_un; - struct sockaddr *servaddr; - socklen_t servaddr_len; - int ret_fd; - size_t try, try_max; - - for(try=0, try_max=5; try < try_max; try++) { - tmpnam(filename_out); - - /* Setup servaddr_un */ - memset (&servaddr_un, 0, sizeof (struct sockaddr_un)); - servaddr_un.sun_family = AF_UNIX; - strlcpy(servaddr_un.sun_path, filename_out, sizeof(servaddr_un.sun_path)); - - servaddr = (struct sockaddr *) &servaddr_un; - servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(filename_out); - - ret_fd = socket(PF_UNIX, SOCK_STREAM, 0); - if(ret_fd == -1) { - fprintf(stderr, "X11.app: Failed to create socket (try %d / %d): %s - %s\n", (int)try+1, (int)try_max, filename_out, strerror(errno)); - continue; - } - - if(bind(ret_fd, servaddr, servaddr_len) != 0) { - fprintf(stderr, "X11.app: Failed to bind socket: %d - %s\n", errno, strerror(errno)); - close(ret_fd); - return 0; - } - - if(listen(ret_fd, 10) != 0) { - fprintf(stderr, "X11.app: Failed to listen to socket: %s - %d - %s\n", filename_out, errno, strerror(errno)); - close(ret_fd); - return 0; - } - -#ifdef DEBUG - fprintf(stderr, "X11.app: Listening on socket for fd handoff: (%d) %s\n", ret_fd, filename_out); -#endif - - return ret_fd; - } - - return 0; -} - -static int launchd_socket_handed_off = 0; - -kern_return_t do_request_fd_handoff_socket(mach_port_t port, string_t filename) { - socket_handoff_t *handoff_data; - - launchd_socket_handed_off = 1; - - handoff_data = (socket_handoff_t *)calloc(1,sizeof(socket_handoff_t)); - if(!handoff_data) { - fprintf(stderr, "X11.app: Error allocating memory for handoff_data\n"); - return KERN_FAILURE; - } - - handoff_data->fd = create_socket(handoff_data->filename); - if(!handoff_data->fd) { - free(handoff_data); - return KERN_FAILURE; - } - - strlcpy(filename, handoff_data->filename, STRING_T_SIZE); - - create_thread(socket_handoff_thread, handoff_data); - -#ifdef DEBUG - fprintf(stderr, "X11.app: Thread created for handoff. Returning success to tell caller to connect and push the fd.\n"); -#endif - - return KERN_SUCCESS; -} - -kern_return_t do_request_pid(mach_port_t port, int *my_pid) { - *my_pid = getpid(); - return KERN_SUCCESS; -} - -/*** Server Startup ***/ -kern_return_t do_start_x11_server(mach_port_t port, string_array_t argv, - mach_msg_type_number_t argvCnt, - string_array_t envp, - mach_msg_type_number_t envpCnt) { - /* And now back to char ** */ - char **_argv = alloca((argvCnt + 1) * sizeof(char *)); - char **_envp = alloca((envpCnt + 1) * sizeof(char *)); - size_t i; - - /* If we didn't get handed a launchd DISPLAY socket, we should - * unset DISPLAY or we can run into problems with pbproxy - */ - if(!launchd_socket_handed_off) { - fprintf(stderr, "X11.app: No launchd socket handed off, unsetting DISPLAY\n"); - unsetenv("DISPLAY"); - } - - if(!_argv || !_envp) { - return KERN_FAILURE; - } - - fprintf(stderr, "X11.app: do_start_x11_server(): argc=%d\n", argvCnt); - for(i=0; i < argvCnt; i++) { - _argv[i] = argv[i]; - fprintf(stderr, "\targv[%u] = %s\n", (unsigned)i, argv[i]); - } - _argv[argvCnt] = NULL; - - for(i=0; i < envpCnt; i++) { - _envp[i] = envp[i]; - } - _envp[envpCnt] = NULL; - - if(server_main(argvCnt, _argv, _envp) == 0) - return KERN_SUCCESS; - else - return KERN_FAILURE; -} - -static int startup_trigger(int argc, char **argv, char **envp) { - Display *display; - const char *s; - - /* Take care of the case where we're called like a normal DDX */ - if(argc > 1 && argv[1][0] == ':') { - size_t i; - kern_return_t kr; - mach_port_t mp; - string_array_t newenvp; - string_array_t newargv; - - /* We need to count envp */ - int envpc; - for(envpc=0; envp[envpc]; envpc++); - - /* We have fixed-size string lengths due to limitations in IPC, - * so we need to copy our argv and envp. - */ - newargv = (string_array_t)alloca(argc * sizeof(string_t)); - newenvp = (string_array_t)alloca(envpc * sizeof(string_t)); - - if(!newargv || !newenvp) { - fprintf(stderr, "Memory allocation failure\n"); - exit(EXIT_FAILURE); - } - - for(i=0; i < argc; i++) { - strlcpy(newargv[i], argv[i], STRING_T_SIZE); - } - for(i=0; i < envpc; i++) { - strlcpy(newenvp[i], envp[i], STRING_T_SIZE); - } - - kr = bootstrap_look_up(bootstrap_port, server_bootstrap_name, &mp); - if (kr != KERN_SUCCESS) { -#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050 - fprintf(stderr, "bootstrap_look_up(%s): %s\n", server_bootstrap_name, bootstrap_strerror(kr)); -#else - fprintf(stderr, "bootstrap_look_up(%s): %ul\n", server_bootstrap_name, (unsigned long)kr); -#endif - exit(EXIT_FAILURE); - } - - kr = start_x11_server(mp, newargv, argc, newenvp, envpc); - if (kr != KERN_SUCCESS) { - fprintf(stderr, "start_x11_server: %s\n", mach_error_string(kr)); - exit(EXIT_FAILURE); - } - exit(EXIT_SUCCESS); - } - - /* If we have a process serial number and it's our only arg, act as if - * the user double clicked the app bundle: launch app_to_run if possible - */ - if(argc == 1 || (argc == 2 && !strncmp(argv[1], "-psn_", 5))) { - /* Now, try to open a display, if so, run the launcher */ - display = XOpenDisplay(NULL); - if(display) { - /* Could open the display, start the launcher */ - XCloseDisplay(display); - - return execute(command_from_prefs("app_to_run", DEFAULT_CLIENT)); - } - } - - /* Start the server */ - if((s = getenv("DISPLAY"))) { - fprintf(stderr, "X11.app: Could not connect to server (DISPLAY=\"%s\", unsetting). Starting X server.\n", s); - unsetenv("DISPLAY"); - } else { - fprintf(stderr, "X11.app: Could not connect to server (DISPLAY is not set). Starting X server.\n"); - } - return execute(command_from_prefs("startx_script", DEFAULT_STARTX)); -} - -/** Setup the environment we want our child processes to inherit */ -static void ensure_path(const char *dir) { - char buf[1024], *temp; - - /* Make sure /usr/X11/bin is in the $PATH */ - temp = getenv("PATH"); - if(temp == NULL || temp[0] == 0) { - snprintf(buf, sizeof(buf), "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:%s", dir); - setenv("PATH", buf, TRUE); - } else if(strnstr(temp, X11BINDIR, sizeof(temp)) == NULL) { - snprintf(buf, sizeof(buf), "%s:%s", temp, dir); - setenv("PATH", buf, TRUE); - } -} - -static void setup_env(void) { - char *temp; - const char *pds = NULL; - const char *disp = getenv("DISPLAY"); - size_t len; - - /* Pass on our prefs domain to startx and its inheritors (mainly for - * quartz-wm and the Xquartz stub's MachIPC) - */ - CFBundleRef bundle = CFBundleGetMainBundle(); - if(bundle) { - CFStringRef pd = CFBundleGetIdentifier(bundle); - if(pd) { - pds = CFStringGetCStringPtr(pd, 0); - } - } - - /* fallback to hardcoded value if we can't discover it */ - if(!pds) { - pds = LAUNCHD_ID_PREFIX".X11"; - } - - server_bootstrap_name = malloc(sizeof(char) * (strlen(pds) + 1)); - if(!server_bootstrap_name) { - fprintf(stderr, "X11.app: Memory allocation error.\n"); - exit(1); - } - strcpy(server_bootstrap_name, pds); - setenv("X11_PREFS_DOMAIN", server_bootstrap_name, 1); - - len = strlen(server_bootstrap_name); - launchd_id_prefix = malloc(sizeof(char) * (len - 3)); - if(!launchd_id_prefix) { - fprintf(stderr, "X11.app: Memory allocation error.\n"); - exit(1); - } - strlcpy(launchd_id_prefix, server_bootstrap_name, len - 3); - - /* We need to unset DISPLAY if it is not our socket */ - if(disp) { - /* s = basename(disp) */ - const char *d, *s; - for(s = NULL, d = disp; *d; d++) { - if(*d == '/') - s = d + 1; - } - - if(s && *s) { - if(strcmp(launchd_id_prefix, "org.x") == 0 && strcmp(s, ":0") == 0) { - fprintf(stderr, "X11.app: Detected old style launchd DISPLAY, please update xinit.\n"); - } else { - temp = (char *)malloc(sizeof(char) * len); - if(!temp) { - fprintf(stderr, "X11.app: Memory allocation error creating space for socket name test.\n"); - exit(1); - } - strlcpy(temp, launchd_id_prefix, len); - strlcat(temp, ":0", len); - - if(strcmp(temp, s) != 0) { - /* If we don't have a match, unset it. */ - fprintf(stderr, "X11.app: DISPLAY (\"%s\") does not match our id (\"%s\"), unsetting.\n", disp, launchd_id_prefix); - unsetenv("DISPLAY"); - } - free(temp); - } - } else { - /* The DISPLAY environment variable is not formatted like a launchd socket, so reset. */ - fprintf(stderr, "X11.app: DISPLAY does not look like a launchd set variable, unsetting.\n"); - unsetenv("DISPLAY"); - } - } - - /* Make sure PATH is right */ - ensure_path(X11BINDIR); - - /* cd $HOME */ - temp = getenv("HOME"); - if(temp != NULL && temp[0] != '\0') - chdir(temp); -} - -/*** Main ***/ -int main(int argc, char **argv, char **envp) { - Bool listenOnly = FALSE; - int i; - mach_msg_size_t mxmsgsz = sizeof(union MaxMsgSize) + MAX_TRAILER_SIZE; - mach_port_t mp; - kern_return_t kr; - - /* Setup our environment for our children */ - setup_env(); - - /* The server must not run the PanoramiX operations. */ - noPanoramiXExtension = TRUE; - - /* Setup the initial crasherporter info */ - strlcpy(__crashreporter_info_buff__, __crashreporter_info__base, sizeof(__crashreporter_info_buff__)); - - fprintf(stderr, "X11.app: main(): argc=%d\n", argc); - for(i=0; i < argc; i++) { - fprintf(stderr, "\targv[%u] = %s\n", (unsigned)i, argv[i]); - if(!strcmp(argv[i], "--listenonly")) { - listenOnly = TRUE; - } - } - - mp = checkin_or_register(server_bootstrap_name); - if(mp == MACH_PORT_NULL) { - fprintf(stderr, "NULL mach service: %s", server_bootstrap_name); - return EXIT_FAILURE; - } - - /* Check if we need to do something other than listen, and make another - * thread handle it. - */ - if(!listenOnly) { - pid_t child1, child2; - int status; - - /* Do the fork-twice trick to avoid having to reap zombies */ - child1 = fork(); - switch (child1) { - case -1: /* error */ - break; - - case 0: /* child1 */ - child2 = fork(); - - switch (child2) { - int max_files, i; - - case -1: /* error */ - break; - - case 0: /* child2 */ - /* close all open files except for standard streams */ - max_files = sysconf(_SC_OPEN_MAX); - for(i = 3; i < max_files; i++) - close(i); - - /* ensure stdin is on /dev/null */ - close(0); - open("/dev/null", O_RDONLY); - - return startup_trigger(argc, argv, envp); - - default: /* parent (child1) */ - _exit(0); - } - break; - - default: /* parent */ - waitpid(child1, &status, 0); - } - } - - /* Main event loop */ - fprintf(stderr, "Waiting for startup parameters via Mach IPC.\n"); - kr = mach_msg_server(mach_startup_server, mxmsgsz, mp, 0); - if (kr != KERN_SUCCESS) { - fprintf(stderr, "%s.X11(mp): %s\n", LAUNCHD_ID_PREFIX, mach_error_string(kr)); - return EXIT_FAILURE; - } - - return EXIT_SUCCESS; -} - -static int execute(const char *command) { - const char *newargv[4]; - const char **p; - - newargv[0] = command_from_prefs("login_shell", DEFAULT_SHELL); - newargv[1] = "-c"; - newargv[2] = command; - newargv[3] = NULL; - - fprintf(stderr, "X11.app: Launching %s:\n", command); - for(p=newargv; *p; p++) { - fprintf(stderr, "\targv[%ld] = %s\n", (long int)(p - newargv), *p); - } - - execvp (newargv[0], (char * const *) newargv); - perror ("X11.app: Couldn't exec."); - return(1); -} - -static char *command_from_prefs(const char *key, const char *default_value) { - char *command = NULL; - - CFStringRef cfKey; - CFPropertyListRef PlistRef; - - if(!key) - return NULL; - - cfKey = CFStringCreateWithCString(NULL, key, kCFStringEncodingASCII); - - if(!cfKey) - return NULL; - - PlistRef = CFPreferencesCopyAppValue(cfKey, kCFPreferencesCurrentApplication); - - if ((PlistRef == NULL) || (CFGetTypeID(PlistRef) != CFStringGetTypeID())) { - CFStringRef cfDefaultValue = CFStringCreateWithCString(NULL, default_value, kCFStringEncodingASCII); - int len = strlen(default_value) + 1; - - if(!cfDefaultValue) - goto command_from_prefs_out; - - CFPreferencesSetAppValue(cfKey, cfDefaultValue, kCFPreferencesCurrentApplication); - CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication); - CFRelease(cfDefaultValue); - - command = (char *)malloc(len * sizeof(char)); - if(!command) - goto command_from_prefs_out; - strcpy(command, default_value); - } else { - int len = CFStringGetLength((CFStringRef)PlistRef) + 1; - command = (char *)malloc(len * sizeof(char)); - if(!command) - goto command_from_prefs_out; - CFStringGetCString((CFStringRef)PlistRef, command, len, kCFStringEncodingASCII); - } - -command_from_prefs_out: - if (PlistRef) - CFRelease(PlistRef); - if(cfKey) - CFRelease(cfKey); - return command; -} +/* main.c -- X application launcher
+
+ Copyright (c) 2007 Jeremy Huddleston
+ Copyright (c) 2007 Apple Inc
+
+ 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. */
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <AvailabilityMacros.h>
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/Xlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <signal.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <sys/time.h>
+#include <fcntl.h>
+
+#include <mach/mach.h>
+#include <mach/mach_error.h>
+#include <servers/bootstrap.h>
+#include "mach_startup.h"
+#include "mach_startupServer.h"
+
+#include "launchd_fd.h"
+/* From darwinEvents.c ... but don't want to pull in all the server cruft */
+void DarwinListenOnOpenFD(int fd);
+
+extern int noPanoramiXExtension;
+
+#define DEFAULT_CLIENT X11BINDIR "/xterm"
+#define DEFAULT_STARTX X11BINDIR "/startx"
+#define DEFAULT_SHELL "/bin/sh"
+
+#ifndef BUILD_DATE
+#define BUILD_DATE ""
+#endif
+#ifndef XSERVER_VERSION
+#define XSERVER_VERSION "?"
+#endif
+
+static char __crashreporter_info_buff__[4096] = {0};
+static const char *__crashreporter_info__ = &__crashreporter_info_buff__[0];
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+// This is actually a toolchain requirement, but I'm not sure the correct check,
+// but it should be fine to just only include it for Leopard and later. This line
+// just tells the linker to never strip this symbol (such as for space optimization)
+asm (".desc ___crashreporter_info__, 0x10");
+#endif
+
+static const char *__crashreporter_info__base = "X.Org X Server " XSERVER_VERSION " Build Date: " BUILD_DATE;
+
+static char *launchd_id_prefix = NULL;
+static char *server_bootstrap_name = NULL;
+
+#define DEBUG 1
+
+/* This is in quartzStartup.c */
+int server_main(int argc, char **argv, char **envp);
+
+static int execute(const char *command);
+static char *command_from_prefs(const char *key, const char *default_value);
+
+/*** Pthread Magics ***/
+static pthread_t create_thread(void *func, void *arg) {
+ pthread_attr_t attr;
+ pthread_t tid;
+
+ pthread_attr_init (&attr);
+ pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM);
+ pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+ pthread_create (&tid, &attr, func, arg);
+ pthread_attr_destroy (&attr);
+
+ return tid;
+}
+
+/*** Mach-O IPC Stuffs ***/
+
+union MaxMsgSize {
+ union __RequestUnion__mach_startup_subsystem req;
+ union __ReplyUnion__mach_startup_subsystem rep;
+};
+
+static mach_port_t checkin_or_register(char *bname) {
+ kern_return_t kr;
+ mach_port_t mp;
+
+ /* If we're started by launchd or the old mach_init */
+ kr = bootstrap_check_in(bootstrap_port, bname, &mp);
+ if (kr == KERN_SUCCESS)
+ return mp;
+
+ /* We probably were not started by launchd or the old mach_init */
+ kr = mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &mp);
+ if (kr != KERN_SUCCESS) {
+ fprintf(stderr, "mach_port_allocate(): %s\n", mach_error_string(kr));
+ exit(EXIT_FAILURE);
+ }
+
+ kr = mach_port_insert_right(mach_task_self(), mp, mp, MACH_MSG_TYPE_MAKE_SEND);
+ if (kr != KERN_SUCCESS) {
+ fprintf(stderr, "mach_port_insert_right(): %s\n", mach_error_string(kr));
+ exit(EXIT_FAILURE);
+ }
+
+ kr = bootstrap_register(bootstrap_port, bname, mp);
+ if (kr != KERN_SUCCESS) {
+ fprintf(stderr, "bootstrap_register(): %s\n", mach_error_string(kr));
+ exit(EXIT_FAILURE);
+ }
+
+ return mp;
+}
+
+/*** $DISPLAY handoff ***/
+static int accept_fd_handoff(int connected_fd) {
+ int launchd_fd;
+
+ char databuf[] = "display";
+ struct iovec iov[1];
+
+ union {
+ struct cmsghdr hdr;
+ char bytes[CMSG_SPACE(sizeof(int))];
+ } buf;
+
+ struct msghdr msg;
+ struct cmsghdr *cmsg;
+
+ iov[0].iov_base = databuf;
+ iov[0].iov_len = sizeof(databuf);
+
+ msg.msg_iov = iov;
+ msg.msg_iovlen = 1;
+ msg.msg_control = buf.bytes;
+ msg.msg_controllen = sizeof(buf);
+ msg.msg_name = 0;
+ msg.msg_namelen = 0;
+ msg.msg_flags = 0;
+
+ cmsg = CMSG_FIRSTHDR (&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+
+ msg.msg_controllen = cmsg->cmsg_len;
+
+ *((int*)CMSG_DATA(cmsg)) = -1;
+
+ if(recvmsg(connected_fd, &msg, 0) < 0) {
+ fprintf(stderr, "X11.app: Error receiving $DISPLAY file descriptor. recvmsg() error: %s\n", strerror(errno));
+ return -1;
+ }
+
+ launchd_fd = *((int*)CMSG_DATA(cmsg));
+
+ return launchd_fd;
+}
+
+typedef struct {
+ int fd;
+ string_t filename;
+} socket_handoff_t;
+
+/* This thread accepts an incoming connection and hands off the file
+ * descriptor for the new connection to accept_fd_handoff()
+ */
+static void socket_handoff_thread(void *arg) {
+ socket_handoff_t *handoff_data = (socket_handoff_t *)arg;
+ int launchd_fd = -1;
+ int connected_fd;
+ unsigned remain;
+
+ /* Now actually get the passed file descriptor from this connection
+ * If we encounter an error, keep listening.
+ */
+ while(launchd_fd == -1) {
+ connected_fd = accept(handoff_data->fd, NULL, NULL);
+ if(connected_fd == -1) {
+ fprintf(stderr, "X11.app: Failed to accept incoming connection on socket (fd=%d): %s\n", handoff_data->fd, strerror(errno));
+ sleep(2);
+ continue;
+ }
+
+ launchd_fd = accept_fd_handoff(connected_fd);
+ if(launchd_fd == -1)
+ fprintf(stderr, "X11.app: Error receiving $DISPLAY file descriptor, no descriptor received? Waiting for another connection.\n");
+
+ close(connected_fd);
+ }
+
+ close(handoff_data->fd);
+ unlink(handoff_data->filename);
+ free(handoff_data);
+
+ /* TODO: Clean up this race better... giving xinitrc time to run... need to wait for 1.5 branch:
+ *
+ * From ajax:
+ * There's already an internal callback chain for setting selection [in 1.5]
+ * ownership. See the CallSelectionCallback at the bottom of
+ * ProcSetSelectionOwner, and xfixes/select.c for an example of how to hook
+ * into it.
+ */
+
+ remain = 3000000;
+ fprintf(stderr, "X11.app: Received new $DISPLAY fd: %d ... sleeping to allow xinitrc to catchup.\n", launchd_fd);
+ while((remain = usleep(remain)) > 0);
+
+ fprintf(stderr, "X11.app Handing off fd to server thread via DarwinListenOnOpenFD(%d)\n", launchd_fd);
+ DarwinListenOnOpenFD(launchd_fd);
+}
+
+static int create_socket(char *filename_out) {
+ struct sockaddr_un servaddr_un;
+ struct sockaddr *servaddr;
+ socklen_t servaddr_len;
+ int ret_fd;
+ size_t try, try_max;
+
+ for(try=0, try_max=5; try < try_max; try++) {
+ tmpnam(filename_out);
+
+ /* Setup servaddr_un */
+ memset (&servaddr_un, 0, sizeof (struct sockaddr_un));
+ servaddr_un.sun_family = AF_UNIX;
+ strlcpy(servaddr_un.sun_path, filename_out, sizeof(servaddr_un.sun_path));
+
+ servaddr = (struct sockaddr *) &servaddr_un;
+ servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(filename_out);
+
+ ret_fd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if(ret_fd == -1) {
+ fprintf(stderr, "X11.app: Failed to create socket (try %d / %d): %s - %s\n", (int)try+1, (int)try_max, filename_out, strerror(errno));
+ continue;
+ }
+
+ if(bind(ret_fd, servaddr, servaddr_len) != 0) {
+ fprintf(stderr, "X11.app: Failed to bind socket: %d - %s\n", errno, strerror(errno));
+ close(ret_fd);
+ return 0;
+ }
+
+ if(listen(ret_fd, 10) != 0) {
+ fprintf(stderr, "X11.app: Failed to listen to socket: %s - %d - %s\n", filename_out, errno, strerror(errno));
+ close(ret_fd);
+ return 0;
+ }
+
+#ifdef DEBUG
+ fprintf(stderr, "X11.app: Listening on socket for fd handoff: (%d) %s\n", ret_fd, filename_out);
+#endif
+
+ return ret_fd;
+ }
+
+ return 0;
+}
+
+static int launchd_socket_handed_off = 0;
+
+kern_return_t do_request_fd_handoff_socket(mach_port_t port, string_t filename) {
+ socket_handoff_t *handoff_data;
+
+ launchd_socket_handed_off = 1;
+
+ handoff_data = (socket_handoff_t *)calloc(1,sizeof(socket_handoff_t));
+ if(!handoff_data) {
+ fprintf(stderr, "X11.app: Error allocating memory for handoff_data\n");
+ return KERN_FAILURE;
+ }
+
+ handoff_data->fd = create_socket(handoff_data->filename);
+ if(!handoff_data->fd) {
+ free(handoff_data);
+ return KERN_FAILURE;
+ }
+
+ strlcpy(filename, handoff_data->filename, STRING_T_SIZE);
+
+ create_thread(socket_handoff_thread, handoff_data);
+
+#ifdef DEBUG
+ fprintf(stderr, "X11.app: Thread created for handoff. Returning success to tell caller to connect and push the fd.\n");
+#endif
+
+ return KERN_SUCCESS;
+}
+
+kern_return_t do_request_pid(mach_port_t port, int *my_pid) {
+ *my_pid = getpid();
+ return KERN_SUCCESS;
+}
+
+/*** Server Startup ***/
+kern_return_t do_start_x11_server(mach_port_t port, string_array_t argv,
+ mach_msg_type_number_t argvCnt,
+ string_array_t envp,
+ mach_msg_type_number_t envpCnt) {
+ /* And now back to char ** */
+ char **_argv = alloca((argvCnt + 1) * sizeof(char *));
+ char **_envp = alloca((envpCnt + 1) * sizeof(char *));
+ size_t i;
+
+ /* If we didn't get handed a launchd DISPLAY socket, we should
+ * unset DISPLAY or we can run into problems with pbproxy
+ */
+ if(!launchd_socket_handed_off) {
+ fprintf(stderr, "X11.app: No launchd socket handed off, unsetting DISPLAY\n");
+ unsetenv("DISPLAY");
+ }
+
+ if(!_argv || !_envp) {
+ return KERN_FAILURE;
+ }
+
+ fprintf(stderr, "X11.app: do_start_x11_server(): argc=%d\n", argvCnt);
+ for(i=0; i < argvCnt; i++) {
+ _argv[i] = argv[i];
+ fprintf(stderr, "\targv[%u] = %s\n", (unsigned)i, argv[i]);
+ }
+ _argv[argvCnt] = NULL;
+
+ for(i=0; i < envpCnt; i++) {
+ _envp[i] = envp[i];
+ }
+ _envp[envpCnt] = NULL;
+
+ if(server_main(argvCnt, _argv, _envp) == 0)
+ return KERN_SUCCESS;
+ else
+ return KERN_FAILURE;
+}
+
+static int startup_trigger(int argc, char **argv, char **envp) {
+ Display *display;
+ const char *s;
+
+ /* Take care of the case where we're called like a normal DDX */
+ if(argc > 1 && argv[1][0] == ':') {
+ size_t i;
+ kern_return_t kr;
+ mach_port_t mp;
+ string_array_t newenvp;
+ string_array_t newargv;
+
+ /* We need to count envp */
+ int envpc;
+ for(envpc=0; envp[envpc]; envpc++);
+
+ /* We have fixed-size string lengths due to limitations in IPC,
+ * so we need to copy our argv and envp.
+ */
+ newargv = (string_array_t)alloca(argc * sizeof(string_t));
+ newenvp = (string_array_t)alloca(envpc * sizeof(string_t));
+
+ if(!newargv || !newenvp) {
+ fprintf(stderr, "Memory allocation failure\n");
+ exit(EXIT_FAILURE);
+ }
+
+ for(i=0; i < argc; i++) {
+ strlcpy(newargv[i], argv[i], STRING_T_SIZE);
+ }
+ for(i=0; i < envpc; i++) {
+ strlcpy(newenvp[i], envp[i], STRING_T_SIZE);
+ }
+
+ kr = bootstrap_look_up(bootstrap_port, server_bootstrap_name, &mp);
+ if (kr != KERN_SUCCESS) {
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+ fprintf(stderr, "bootstrap_look_up(%s): %s\n", server_bootstrap_name, bootstrap_strerror(kr));
+#else
+ fprintf(stderr, "bootstrap_look_up(%s): %ul\n", server_bootstrap_name, (unsigned long)kr);
+#endif
+ exit(EXIT_FAILURE);
+ }
+
+ kr = start_x11_server(mp, newargv, argc, newenvp, envpc);
+ if (kr != KERN_SUCCESS) {
+ fprintf(stderr, "start_x11_server: %s\n", mach_error_string(kr));
+ exit(EXIT_FAILURE);
+ }
+ exit(EXIT_SUCCESS);
+ }
+
+ /* If we have a process serial number and it's our only arg, act as if
+ * the user double clicked the app bundle: launch app_to_run if possible
+ */
+ if(argc == 1 || (argc == 2 && !strncmp(argv[1], "-psn_", 5))) {
+ /* Now, try to open a display, if so, run the launcher */
+ display = XOpenDisplay(NULL);
+ if(display) {
+ /* Could open the display, start the launcher */
+ XCloseDisplay(display);
+
+ return execute(command_from_prefs("app_to_run", DEFAULT_CLIENT));
+ }
+ }
+
+ /* Start the server */
+ if((s = getenv("DISPLAY"))) {
+ fprintf(stderr, "X11.app: Could not connect to server (DISPLAY=\"%s\", unsetting). Starting X server.\n", s);
+ unsetenv("DISPLAY");
+ } else {
+ fprintf(stderr, "X11.app: Could not connect to server (DISPLAY is not set). Starting X server.\n");
+ }
+ return execute(command_from_prefs("startx_script", DEFAULT_STARTX));
+}
+
+/** Setup the environment we want our child processes to inherit */
+static void ensure_path(const char *dir) {
+ char buf[1024], *temp;
+
+ /* Make sure /usr/X11/bin is in the $PATH */
+ temp = getenv("PATH");
+ if(temp == NULL || temp[0] == 0) {
+ snprintf(buf, sizeof(buf), "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:%s", dir);
+ setenv("PATH", buf, TRUE);
+ } else if(strnstr(temp, X11BINDIR, sizeof(temp)) == NULL) {
+ snprintf(buf, sizeof(buf), "%s:%s", temp, dir);
+ setenv("PATH", buf, TRUE);
+ }
+}
+
+static void setup_env(void) {
+ char *temp;
+ const char *pds = NULL;
+ const char *disp = getenv("DISPLAY");
+ size_t len;
+
+ /* Pass on our prefs domain to startx and its inheritors (mainly for
+ * quartz-wm and the Xquartz stub's MachIPC)
+ */
+ CFBundleRef bundle = CFBundleGetMainBundle();
+ if(bundle) {
+ CFStringRef pd = CFBundleGetIdentifier(bundle);
+ if(pd) {
+ pds = CFStringGetCStringPtr(pd, 0);
+ }
+ }
+
+ /* fallback to hardcoded value if we can't discover it */
+ if(!pds) {
+ pds = LAUNCHD_ID_PREFIX".X11";
+ }
+
+ server_bootstrap_name = malloc(sizeof(char) * (strlen(pds) + 1));
+ if(!server_bootstrap_name) {
+ fprintf(stderr, "X11.app: Memory allocation error.\n");
+ exit(1);
+ }
+ strcpy(server_bootstrap_name, pds);
+ setenv("X11_PREFS_DOMAIN", server_bootstrap_name, 1);
+
+ len = strlen(server_bootstrap_name);
+ launchd_id_prefix = malloc(sizeof(char) * (len - 3));
+ if(!launchd_id_prefix) {
+ fprintf(stderr, "X11.app: Memory allocation error.\n");
+ exit(1);
+ }
+ strlcpy(launchd_id_prefix, server_bootstrap_name, len - 3);
+
+ /* We need to unset DISPLAY if it is not our socket */
+ if(disp) {
+ /* s = basename(disp) */
+ const char *d, *s;
+ for(s = NULL, d = disp; *d; d++) {
+ if(*d == '/')
+ s = d + 1;
+ }
+
+ if(s && *s) {
+ if(strcmp(launchd_id_prefix, "org.x") == 0 && strcmp(s, ":0") == 0) {
+ fprintf(stderr, "X11.app: Detected old style launchd DISPLAY, please update xinit.\n");
+ } else {
+ temp = (char *)malloc(sizeof(char) * len);
+ if(!temp) {
+ fprintf(stderr, "X11.app: Memory allocation error creating space for socket name test.\n");
+ exit(1);
+ }
+ strlcpy(temp, launchd_id_prefix, len);
+ strlcat(temp, ":0", len);
+
+ if(strcmp(temp, s) != 0) {
+ /* If we don't have a match, unset it. */
+ fprintf(stderr, "X11.app: DISPLAY (\"%s\") does not match our id (\"%s\"), unsetting.\n", disp, launchd_id_prefix);
+ unsetenv("DISPLAY");
+ }
+ free(temp);
+ }
+ } else {
+ /* The DISPLAY environment variable is not formatted like a launchd socket, so reset. */
+ fprintf(stderr, "X11.app: DISPLAY does not look like a launchd set variable, unsetting.\n");
+ unsetenv("DISPLAY");
+ }
+ }
+
+ /* Make sure PATH is right */
+ ensure_path(X11BINDIR);
+
+ /* cd $HOME */
+ temp = getenv("HOME");
+ if(temp != NULL && temp[0] != '\0')
+ chdir(temp);
+}
+
+/*** Main ***/
+int main(int argc, char **argv, char **envp) {
+ Bool listenOnly = FALSE;
+ int i;
+ mach_msg_size_t mxmsgsz = sizeof(union MaxMsgSize) + MAX_TRAILER_SIZE;
+ mach_port_t mp;
+ kern_return_t kr;
+
+ /* Setup our environment for our children */
+ setup_env();
+
+ /* The server must not run the PanoramiX operations. */
+ noPanoramiXExtension = TRUE;
+
+ /* Setup the initial crasherporter info */
+ strlcpy(__crashreporter_info_buff__, __crashreporter_info__base, sizeof(__crashreporter_info_buff__));
+
+ fprintf(stderr, "X11.app: main(): argc=%d\n", argc);
+ for(i=0; i < argc; i++) {
+ fprintf(stderr, "\targv[%u] = %s\n", (unsigned)i, argv[i]);
+ if(!strcmp(argv[i], "--listenonly")) {
+ listenOnly = TRUE;
+ }
+ }
+
+ mp = checkin_or_register(server_bootstrap_name);
+ if(mp == MACH_PORT_NULL) {
+ fprintf(stderr, "NULL mach service: %s", server_bootstrap_name);
+ return EXIT_FAILURE;
+ }
+
+ /* Check if we need to do something other than listen, and make another
+ * thread handle it.
+ */
+ if(!listenOnly) {
+ pid_t child1, child2;
+ int status;
+
+ /* Do the fork-twice trick to avoid having to reap zombies */
+ child1 = fork();
+ switch (child1) {
+ case -1: /* error */
+ break;
+
+ case 0: /* child1 */
+ child2 = fork();
+
+ switch (child2) {
+ int max_files, i;
+
+ case -1: /* error */
+ break;
+
+ case 0: /* child2 */
+ /* close all open files except for standard streams */
+ max_files = sysconf(_SC_OPEN_MAX);
+ for(i = 3; i < max_files; i++)
+ close(i);
+
+ /* ensure stdin is on /dev/null */
+ close(0);
+ open("/dev/null", O_RDONLY);
+
+ return startup_trigger(argc, argv, envp);
+
+ default: /* parent (child1) */
+ _exit(0);
+ }
+ break;
+
+ default: /* parent */
+ waitpid(child1, &status, 0);
+ }
+ }
+
+ /* Main event loop */
+ fprintf(stderr, "Waiting for startup parameters via Mach IPC.\n");
+ kr = mach_msg_server(mach_startup_server, mxmsgsz, mp, 0);
+ if (kr != KERN_SUCCESS) {
+ fprintf(stderr, "%s.X11(mp): %s\n", LAUNCHD_ID_PREFIX, mach_error_string(kr));
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+
+static int execute(const char *command) {
+ const char *newargv[4];
+ const char **p;
+
+ newargv[0] = command_from_prefs("login_shell", DEFAULT_SHELL);
+ newargv[1] = "-c";
+ newargv[2] = command;
+ newargv[3] = NULL;
+
+ fprintf(stderr, "X11.app: Launching %s:\n", command);
+ for(p=newargv; *p; p++) {
+ fprintf(stderr, "\targv[%ld] = %s\n", (long int)(p - newargv), *p);
+ }
+
+ execvp (newargv[0], (char * const *) newargv);
+ perror ("X11.app: Couldn't exec.");
+ return 1;
+}
+
+static char *command_from_prefs(const char *key, const char *default_value) {
+ char *command = NULL;
+
+ CFStringRef cfKey;
+ CFPropertyListRef PlistRef;
+
+ if(!key)
+ return NULL;
+
+ cfKey = CFStringCreateWithCString(NULL, key, kCFStringEncodingASCII);
+
+ if(!cfKey)
+ return NULL;
+
+ PlistRef = CFPreferencesCopyAppValue(cfKey, kCFPreferencesCurrentApplication);
+
+ if ((PlistRef == NULL) || (CFGetTypeID(PlistRef) != CFStringGetTypeID())) {
+ CFStringRef cfDefaultValue = CFStringCreateWithCString(NULL, default_value, kCFStringEncodingASCII);
+ int len = strlen(default_value) + 1;
+
+ if(!cfDefaultValue)
+ goto command_from_prefs_out;
+
+ CFPreferencesSetAppValue(cfKey, cfDefaultValue, kCFPreferencesCurrentApplication);
+ CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication);
+ CFRelease(cfDefaultValue);
+
+ command = (char *)malloc(len * sizeof(char));
+ if(!command)
+ goto command_from_prefs_out;
+ strcpy(command, default_value);
+ } else {
+ int len = CFStringGetLength((CFStringRef)PlistRef) + 1;
+ command = (char *)malloc(len * sizeof(char));
+ if(!command)
+ goto command_from_prefs_out;
+ CFStringGetCString((CFStringRef)PlistRef, command, len, kCFStringEncodingASCII);
+ }
+
+command_from_prefs_out:
+ if (PlistRef)
+ CFRelease(PlistRef);
+ if(cfKey)
+ CFRelease(cfKey);
+ return command;
+}
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