1 files changed, 286 insertions, 0 deletions
diff --git a/hw/xquartz/mach-startup/stub.c b/hw/xquartz/mach-startup/stub.c
new file mode 100644
index 000000000..0a9ab669c
--- /dev/null
+++ b/hw/xquartz/mach-startup/stub.c
@@ -0,0 +1,286 @@
+/* Copyright (c) 2008 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 <CoreServices/CoreServices.h>
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#define kX11AppBundleId "org.x.X11"
+#define kX11AppBundlePath "/Contents/MacOS/X11"
+
+#include <mach/mach.h>
+#include <mach/mach_error.h>
+#include <servers/bootstrap.h>
+#include "mach_startup.h"
+
+#include "launchd_fd.h"
+
+#ifndef BUILD_DATE
+#define BUILD_DATE "?"
+#endif
+#ifndef XSERVER_VERSION
+#define XSERVER_VERSION "?"
+#endif
+
+static char x11_path[PATH_MAX + 1];
+
+static void set_x11_path() {
+    CFURLRef appURL = NULL;
+    CFBundleRef bundle = NULL;
+    OSStatus osstatus = LSFindApplicationForInfo(kLSUnknownCreator, CFSTR(kX11AppBundleId), nil, nil, &appURL);
+    UInt32 ver;
+
+    switch (osstatus) {
+        case noErr:
+            if (appURL == NULL) {
+                fprintf(stderr, "Xquartz: Invalid response from LSFindApplicationForInfo(%s)\n", 
+                        kX11AppBundleId);
+                exit(1);
+            }
+
+            bundle = CFBundleCreate(NULL, appURL);
+            if(!bundle) {
+                fprintf(stderr, "Xquartz: Null value returned from CFBundleCreate().\n");
+                exit(2);                
+            }
+
+            if (!CFURLGetFileSystemRepresentation(appURL, true, (unsigned char *)x11_path, sizeof(x11_path))) {
+                fprintf(stderr, "Xquartz: Error resolving URL for %s\n", kX11AppBundleId);
+                exit(3);
+            }
+
+            ver = CFBundleGetVersionNumber(bundle);
+            if(ver < 0x02308000) {
+                CFStringRef versionStr = CFBundleGetValueForInfoDictionaryKey(bundle, kCFBundleVersionKey);
+                const char * versionCStr = "Unknown";
+
+                if(versionStr) 
+                    versionCStr = CFStringGetCStringPtr(versionStr, kCFStringEncodingMacRoman);
+
+                fprintf(stderr, "Xquartz: Could not find a new enough X11.app LSFindApplicationForInfo() returned\n");
+                fprintf(stderr, "         X11.app = %s\n", x11_path);
+                fprintf(stderr, "         Version = %s (%x), Expected Version > 2.3.0\n", versionCStr, (unsigned)ver);
+                exit(9);
+            }
+
+            strlcat(x11_path, kX11AppBundlePath, sizeof(x11_path));
+#ifdef DEBUG
+            fprintf(stderr, "Xquartz: X11.app = %s\n", x11_path);
+#endif
+            break;
+        case kLSApplicationNotFoundErr:
+            fprintf(stderr, "Xquartz: Unable to find application for %s\n", kX11AppBundleId);
+            exit(10);
+        default:
+            fprintf(stderr, "Xquartz: Unable to find application for %s, error code = %d\n", 
+                    kX11AppBundleId, (int)osstatus);
+            exit(11);
+    }
+}
+
+static void send_fd_handoff(int connected_fd, int launchd_fd) {
+    char databuf[] = "display";
+    struct iovec iov[1];
+    
+    iov[0].iov_base = databuf;
+    iov[0].iov_len  = sizeof(databuf);
+
+    union {
+        struct cmsghdr hdr;
+        char bytes[CMSG_SPACE(sizeof(int))];
+    } buf;
+    
+    struct msghdr msg;
+    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;
+
+    struct cmsghdr *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)) = launchd_fd;
+    
+    if (sendmsg(connected_fd, &msg, 0) < 0) {
+        fprintf(stderr, "Error sending $DISPLAY file descriptor: %s\n", strerror(errno));
+        return;
+    }
+
+    fprintf(stderr, "send %d %d %d %s\n", connected_fd, launchd_fd, errno, strerror(errno));
+}
+
+static void handoff_fd(const char *filename, int launchd_fd) {
+    struct sockaddr_un servaddr_un;
+    struct sockaddr *servaddr;
+    socklen_t servaddr_len;
+    int handoff_fd, connected_fd;
+
+    /* Setup servaddr_un */
+    memset (&servaddr_un, 0, sizeof (struct sockaddr_un));
+    servaddr_un.sun_family = AF_UNIX;
+    strlcpy(servaddr_un.sun_path, filename, sizeof(servaddr_un.sun_path));
+
+    servaddr = (struct sockaddr *) &servaddr_un;
+    servaddr_len = sizeof(struct sockaddr_un) - sizeof(servaddr_un.sun_path) + strlen(filename);
+
+    handoff_fd = socket(PF_UNIX, SOCK_STREAM, 0);
+    if(handoff_fd == 0) {
+        fprintf(stderr, "Failed to create socket: %s - %s\n", filename, strerror(errno));
+        return;
+    }
+
+    connected_fd = connect(handoff_fd, servaddr, servaddr_len);
+
+    if(connected_fd == -1) {
+        fprintf(stderr, "Failed to establish connection on socket: %s - %s\n", filename, strerror(errno));
+        return;
+    }
+
+    send_fd_handoff(connected_fd, launchd_fd);
+
+    close(handoff_fd);
+}
+
+int main(int argc, char **argv, char **envp) {
+#ifdef NEW_LAUNCH_METHOD
+    int envpc;
+    kern_return_t kr;
+    mach_port_t mp;
+    string_array_t newenvp;
+    string_array_t newargv;
+    size_t i;
+    int launchd_fd;
+    string_t handoff_socket;
+#endif
+
+    if(argc == 2 && !strcmp(argv[1], "-version")) {
+        fprintf(stderr, "X.org Release 7.3\n");
+        fprintf(stderr, "X.Org X Server %s\n", XSERVER_VERSION);
+        fprintf(stderr, "Build Date: %s\n", BUILD_DATE);
+        return EXIT_SUCCESS;
+    }
+
+#ifdef NEW_LAUNCH_METHOD
+    /* Get the $DISPLAY FD */
+    launchd_fd = launchd_display_fd();
+
+    kr = bootstrap_look_up(bootstrap_port, SERVER_BOOTSTRAP_NAME, &mp);
+    if(kr != KERN_SUCCESS) {
+        set_x11_path();
+
+        /* This forking is ugly and will be cleaned up later */
+        pid_t child = fork();
+        if(child == -1) {
+            fprintf(stderr, "Could not fork: %s\n", strerror(errno));
+            return EXIT_FAILURE;
+        }
+
+        if(child == 0) {
+            char *_argv[3];
+            _argv[0] = x11_path;
+            _argv[1] = "--listenonly";
+            _argv[2] = NULL;
+            fprintf(stderr, "Starting X server: %s --listenonly\n", x11_path);
+            return execvp(x11_path, _argv);
+        }
+
+        /* Try connecting for 10 seconds */
+        for(i=0; i < 80; i++) {
+            usleep(250000);
+            kr = bootstrap_look_up(bootstrap_port, SERVER_BOOTSTRAP_NAME, &mp);
+            if(kr == KERN_SUCCESS)
+                break;
+        }
+
+        if(kr != KERN_SUCCESS) {
+            fprintf(stderr, "bootstrap_look_up(): Timed out: %s\n", bootstrap_strerror(kr));
+            return EXIT_FAILURE;
+        }
+    }
+    
+    /* Handoff the $DISPLAY FD */
+    if(launchd_fd != -1) {
+        tmpnam(handoff_socket);
+        if(prep_fd_handoff(mp, handoff_socket) == KERN_SUCCESS) {
+            handoff_fd(handoff_socket, launchd_fd);
+        } else {
+            fprintf(stderr, "Unable to hand of $DISPLAY file descriptor\n");
+        }
+    }
+
+    /* Count envp */
+    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 = start_x11_server(mp, newargv, argc, newenvp, envpc);
+    if (kr != KERN_SUCCESS) {
+        fprintf(stderr, "start_x11_server: %s\n", mach_error_string(kr));
+        return EXIT_FAILURE;
+    }
+    return EXIT_SUCCESS;
+    
+#else
+    set_x11_path();
+    argv[0] = x11_path;
+    return execvp(x11_path, argv);
+#endif
+}