| 1 | /** @file
|
|---|
| 2 | *
|
|---|
| 3 | * VirtualBox Guest Service:
|
|---|
| 4 | * Linux guest.
|
|---|
| 5 | */
|
|---|
| 6 |
|
|---|
| 7 | /*
|
|---|
| 8 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
|---|
| 9 | *
|
|---|
| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 11 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 12 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 13 | * General Public License (GPL) as published by the Free Software
|
|---|
| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 17 | *
|
|---|
| 18 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
|---|
| 19 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
|---|
| 20 | * additional information or have any questions.
|
|---|
| 21 | */
|
|---|
| 22 |
|
|---|
| 23 | #include <VBox/VBoxGuest.h>
|
|---|
| 24 | #include <VBox/log.h>
|
|---|
| 25 | #include <iprt/initterm.h>
|
|---|
| 26 | #include <iprt/path.h>
|
|---|
| 27 |
|
|---|
| 28 | #include <iostream>
|
|---|
| 29 | #include <cstdio>
|
|---|
| 30 |
|
|---|
| 31 | #include <sys/types.h>
|
|---|
| 32 | #include <stdlib.h> /* For exit */
|
|---|
| 33 | #include <unistd.h>
|
|---|
| 34 | #include <errno.h>
|
|---|
| 35 | #include <signal.h>
|
|---|
| 36 |
|
|---|
| 37 | #include <X11/Xlib.h>
|
|---|
| 38 | #include <X11/Intrinsic.h>
|
|---|
| 39 |
|
|---|
| 40 | #include "clipboard.h"
|
|---|
| 41 |
|
|---|
| 42 | #ifdef DYNAMIC_RESIZE
|
|---|
| 43 | # include "displaychange.h"
|
|---|
| 44 | # ifdef SEAMLESS_GUEST
|
|---|
| 45 | # include "seamless.h"
|
|---|
| 46 | # endif
|
|---|
| 47 | #endif
|
|---|
| 48 |
|
|---|
| 49 | #define TRACE printf("%s: %d\n", __PRETTY_FUNCTION__, __LINE__); Log(("%s: %d\n", __PRETTY_FUNCTION__, __LINE__))
|
|---|
| 50 |
|
|---|
| 51 | static int (*gpfnOldIOErrorHandler)(Display *) = NULL;
|
|---|
| 52 |
|
|---|
| 53 | /* Make these global so that the destructors are called if we make an "emergency exit",
|
|---|
| 54 | i.e. a (handled) signal or an X11 error. */
|
|---|
| 55 | #ifdef DYNAMIC_RESIZE
|
|---|
| 56 | VBoxGuestDisplayChangeMonitor gDisplayChange;
|
|---|
| 57 | # ifdef SEAMLESS_GUEST
|
|---|
| 58 | /** Our instance of the seamless class. This only makes sense if dynamic resizing
|
|---|
| 59 | is enabled. */
|
|---|
| 60 | VBoxGuestSeamless gSeamless;
|
|---|
| 61 | # endif /* SEAMLESS_GUEST defined */
|
|---|
| 62 | #endif /* DYNAMIC_RESIZE */
|
|---|
| 63 | #ifdef VBOX_X11_CLIPBOARD
|
|---|
| 64 | VBoxGuestClipboard gClipboard;
|
|---|
| 65 | #endif
|
|---|
| 66 |
|
|---|
| 67 | /**
|
|---|
| 68 | * Drop the programmes privileges to the caller's.
|
|---|
| 69 | * @returns IPRT status code
|
|---|
| 70 | * @todo move this into the R3 guest library
|
|---|
| 71 | */
|
|---|
| 72 | int vboxClientDropPrivileges(void)
|
|---|
| 73 | {
|
|---|
| 74 | int rc = VINF_SUCCESS;
|
|---|
| 75 | int rcSystem, rcErrno;
|
|---|
| 76 |
|
|---|
| 77 | LogFlowFunc(("\n"));
|
|---|
| 78 | #ifdef _POSIX_SAVED_IDS
|
|---|
| 79 | rcSystem = setuid(getuid());
|
|---|
| 80 | #else
|
|---|
| 81 | rcSystem = setreuid(-1, getuid());
|
|---|
| 82 | #endif
|
|---|
| 83 | if (rcSystem < 0)
|
|---|
| 84 | {
|
|---|
| 85 | rcErrno = errno;
|
|---|
| 86 | rc = RTErrConvertFromErrno(rcErrno);
|
|---|
| 87 | LogRel(("VBoxClient: failed to drop privileges, error %Rrc.\n", rc));
|
|---|
| 88 | }
|
|---|
| 89 | LogFlowFunc(("returning %Rrc\n", rc));
|
|---|
| 90 | return rc;
|
|---|
| 91 | }
|
|---|
| 92 |
|
|---|
| 93 | /**
|
|---|
| 94 | * Xlib error handler for certain errors that we can't avoid.
|
|---|
| 95 | */
|
|---|
| 96 | int vboxClientXLibErrorHandler(Display *pDisplay, XErrorEvent *pError)
|
|---|
| 97 | {
|
|---|
| 98 | char errorText[1024];
|
|---|
| 99 |
|
|---|
| 100 | if (pError->error_code == BadAtom)
|
|---|
| 101 | {
|
|---|
| 102 | /* This can be triggered in debug builds if a guest application passes a bad atom
|
|---|
| 103 | in its list of supported clipboard formats. As such it is harmless. */
|
|---|
| 104 | Log(("VBoxClient: ignoring BadAtom error and returning\n"));
|
|---|
| 105 | return 0;
|
|---|
| 106 | }
|
|---|
| 107 | if (pError->error_code == BadWindow)
|
|---|
| 108 | {
|
|---|
| 109 | /* This can be triggered if a guest application destroys a window before we notice. */
|
|---|
| 110 | Log(("VBoxClient: ignoring BadWindow error and returning\n"));
|
|---|
| 111 | return 0;
|
|---|
| 112 | }
|
|---|
| 113 | XGetErrorText(pDisplay, pError->error_code, errorText, sizeof(errorText));
|
|---|
| 114 | LogRel(("VBoxClient: an X Window protocol error occurred: %s (error code %d). Request code: %d, minor code: %d, serial number: %d\n", errorText, pError->error_code, pError->request_code, pError->minor_code, pError->serial));
|
|---|
| 115 | VbglR3Term();
|
|---|
| 116 | exit(1);
|
|---|
| 117 | }
|
|---|
| 118 |
|
|---|
| 119 | /**
|
|---|
| 120 | * Xlib error handler for fatal errors. This often means that the programme is still running
|
|---|
| 121 | * when X exits.
|
|---|
| 122 | */
|
|---|
| 123 | int vboxClientXLibIOErrorHandler(Display *pDisplay)
|
|---|
| 124 | {
|
|---|
| 125 | Log(("VBoxClient: a fatal guest X Window error occurred. This may just mean that the Window system was shut down while the client was still running.\n"));
|
|---|
| 126 | VbglR3Term();
|
|---|
| 127 | return gpfnOldIOErrorHandler(pDisplay);
|
|---|
| 128 | }
|
|---|
| 129 |
|
|---|
| 130 | /**
|
|---|
| 131 | * A standard signal handler which cleans up and exits. Our global static objects will
|
|---|
| 132 | * be cleaned up properly as we exit using "exit".
|
|---|
| 133 | */
|
|---|
| 134 | void vboxClientSignalHandler(int cSignal)
|
|---|
| 135 | {
|
|---|
| 136 | Log(("VBoxClient: terminated with signal %d\n", cSignal));
|
|---|
| 137 | /* Our pause() call will now return and exit. */
|
|---|
| 138 | }
|
|---|
| 139 |
|
|---|
| 140 | /**
|
|---|
| 141 | * Reset all standard termination signals to call our signal handler, which cleans up
|
|---|
| 142 | * and exits.
|
|---|
| 143 | */
|
|---|
| 144 | void vboxClientSetSignalHandlers(void)
|
|---|
| 145 | {
|
|---|
| 146 | struct sigaction sigAction;
|
|---|
| 147 |
|
|---|
| 148 | LogFlowFunc(("\n"));
|
|---|
| 149 | sigAction.sa_handler = vboxClientSignalHandler;
|
|---|
| 150 | sigemptyset(&sigAction.sa_mask);
|
|---|
| 151 | sigAction.sa_flags = 0;
|
|---|
| 152 | sigaction(SIGHUP, &sigAction, NULL);
|
|---|
| 153 | sigaction(SIGINT, &sigAction, NULL);
|
|---|
| 154 | sigaction(SIGQUIT, &sigAction, NULL);
|
|---|
| 155 | sigaction(SIGABRT, &sigAction, NULL);
|
|---|
| 156 | sigaction(SIGPIPE, &sigAction, NULL);
|
|---|
| 157 | sigaction(SIGALRM, &sigAction, NULL);
|
|---|
| 158 | sigaction(SIGTERM, &sigAction, NULL);
|
|---|
| 159 | sigaction(SIGUSR1, &sigAction, NULL);
|
|---|
| 160 | sigaction(SIGUSR2, &sigAction, NULL);
|
|---|
| 161 | LogFlowFunc(("returning\n"));
|
|---|
| 162 | }
|
|---|
| 163 |
|
|---|
| 164 | /**
|
|---|
| 165 | * Print out a usage message and exit with success.
|
|---|
| 166 | */
|
|---|
| 167 | void vboxClientUsage(const char *pcszFileName)
|
|---|
| 168 | {
|
|---|
| 169 | /* printf is better for i18n than iostream. */
|
|---|
| 170 | printf("Usage: %s [-d|--nodaemon]\n", pcszFileName);
|
|---|
| 171 | printf("Start the VirtualBox X Window System guest services.\n\n");
|
|---|
| 172 | printf("Options:\n");
|
|---|
| 173 | printf(" -d, --nodaemon do not lower privileges and continue running as a system\n");
|
|---|
| 174 | printf(" service\n");
|
|---|
| 175 | exit(0);
|
|---|
| 176 | }
|
|---|
| 177 |
|
|---|
| 178 | /**
|
|---|
| 179 | * The main loop for the VBoxClient daemon.
|
|---|
| 180 | */
|
|---|
| 181 | int main(int argc, char *argv[])
|
|---|
| 182 | {
|
|---|
| 183 | int rcClipboard, rc = VINF_SUCCESS;
|
|---|
| 184 | const char *pszFileName = RTPathFilename(argv[0]);
|
|---|
| 185 | bool fDaemonise = true;
|
|---|
| 186 |
|
|---|
| 187 | if (NULL == pszFileName)
|
|---|
| 188 | pszFileName = "VBoxClient";
|
|---|
| 189 |
|
|---|
| 190 | /* Parse our option(s) */
|
|---|
| 191 | /** @todo Use RTGetOpt() if the arguments become more complex. */
|
|---|
| 192 | for (int i = 1; i < argc; ++i)
|
|---|
| 193 | {
|
|---|
| 194 | if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--nodaemon"))
|
|---|
| 195 | fDaemonise = false;
|
|---|
| 196 | else if (!strcmp(argv[i], "-h") || strcmp(argv[i], "--help"))
|
|---|
| 197 | {
|
|---|
| 198 | vboxClientUsage(pszFileName);
|
|---|
| 199 | exit(0);
|
|---|
| 200 | }
|
|---|
| 201 | else
|
|---|
| 202 | {
|
|---|
| 203 | /* printf is better than iostream for i18n. */
|
|---|
| 204 | printf("%s: unrecognized option `%s'\n", pszFileName, argv[i]);
|
|---|
| 205 | printf("Try `%s --help' for more information\n", pszFileName);
|
|---|
| 206 | exit(1);
|
|---|
| 207 | }
|
|---|
| 208 | }
|
|---|
| 209 | if (fDaemonise)
|
|---|
| 210 | {
|
|---|
| 211 | rc = VbglR3Daemonize(false /* fNoChDir */, false /* fNoClose */);
|
|---|
| 212 | if (RT_FAILURE(rc))
|
|---|
| 213 | {
|
|---|
| 214 | std::cout << "VBoxClient: failed to daemonize. exiting."<< std::endl;
|
|---|
| 215 | return 1;
|
|---|
| 216 | }
|
|---|
| 217 | }
|
|---|
| 218 | /* Initialise our runtime before all else. */
|
|---|
| 219 | RTR3Init(false);
|
|---|
| 220 | if (RT_FAILURE(VbglR3Init()))
|
|---|
| 221 | {
|
|---|
| 222 | std::cout << "Failed to connect to the VirtualBox kernel service" << std::endl;
|
|---|
| 223 | return 1;
|
|---|
| 224 | }
|
|---|
| 225 | if (fDaemonise && RT_FAILURE(vboxClientDropPrivileges()))
|
|---|
| 226 | return 1;
|
|---|
| 227 | LogRel(("VBoxClient: starting...\n"));
|
|---|
| 228 | /* Initialise threading in X11 and in Xt. */
|
|---|
| 229 | if (!XInitThreads() || !XtToolkitThreadInitialize())
|
|---|
| 230 | {
|
|---|
| 231 | LogRel(("VBoxClient: error initialising threads in X11, exiting."));
|
|---|
| 232 | return 1;
|
|---|
| 233 | }
|
|---|
| 234 | /* Set an X11 error handler, so that we don't die when we get unavoidable errors. */
|
|---|
| 235 | XSetErrorHandler(vboxClientXLibErrorHandler);
|
|---|
| 236 | /* Set an X11 I/O error handler, so that we can shutdown properly on fatal errors. */
|
|---|
| 237 | gpfnOldIOErrorHandler = XSetIOErrorHandler(vboxClientXLibIOErrorHandler);
|
|---|
| 238 | vboxClientSetSignalHandlers();
|
|---|
| 239 | try
|
|---|
| 240 | {
|
|---|
| 241 | #ifdef VBOX_X11_CLIPBOARD
|
|---|
| 242 | /* Connect to the host clipboard. */
|
|---|
| 243 | LogRel(("VBoxClient: starting clipboard Guest Additions...\n"));
|
|---|
| 244 | rcClipboard = gClipboard.init();
|
|---|
| 245 | if (RT_FAILURE(rcClipboard))
|
|---|
| 246 | {
|
|---|
| 247 | LogRel(("VBoxClient: vboxClipboardConnect failed with rc = %Rrc\n", rc));
|
|---|
| 248 | }
|
|---|
| 249 | #endif /* VBOX_X11_CLIPBOARD defined */
|
|---|
| 250 | #ifdef DYNAMIC_RESIZE
|
|---|
| 251 | LogRel(("VBoxClient: starting dynamic guest resizing...\n"));
|
|---|
| 252 | rc = gDisplayChange.init();
|
|---|
| 253 | if (RT_FAILURE(rc))
|
|---|
| 254 | {
|
|---|
| 255 | LogRel(("VBoxClient: failed to start dynamic guest resizing, rc = %Rrc\n", rc));
|
|---|
| 256 | }
|
|---|
| 257 | # ifdef SEAMLESS_GUEST
|
|---|
| 258 | if (RT_SUCCESS(rc))
|
|---|
| 259 | {
|
|---|
| 260 | LogRel(("VBoxClient: starting seamless Guest Additions...\n"));
|
|---|
| 261 | rc = gSeamless.init();
|
|---|
| 262 | if (RT_FAILURE(rc))
|
|---|
| 263 | {
|
|---|
| 264 | LogRel(("VBoxClient: failed to start seamless Additions, rc = %Rrc\n", rc));
|
|---|
| 265 | }
|
|---|
| 266 | }
|
|---|
| 267 | # endif /* SEAMLESS_GUEST defined */
|
|---|
| 268 | #endif /* DYNAMIC_RESIZE defined */
|
|---|
| 269 | }
|
|---|
| 270 | catch (std::exception e)
|
|---|
| 271 | {
|
|---|
| 272 | LogRel(("VBoxClient: failed to initialise Guest Additions - caught exception: %s\n", e.what()));
|
|---|
| 273 | rc = VERR_UNRESOLVED_ERROR;
|
|---|
| 274 | }
|
|---|
| 275 | catch (...)
|
|---|
| 276 | {
|
|---|
| 277 | LogRel(("VBoxClient: failed to initialise Guest Additions - caught unknown exception.\n"));
|
|---|
| 278 | rc = VERR_UNRESOLVED_ERROR;
|
|---|
| 279 | }
|
|---|
| 280 | LogRel(("VBoxClient: sleeping...\n"));
|
|---|
| 281 | pause();
|
|---|
| 282 | LogRel(("VBoxClient: exiting...\n"));
|
|---|
| 283 | try
|
|---|
| 284 | {
|
|---|
| 285 | #ifdef DYNAMIC_RESIZE
|
|---|
| 286 | # ifdef SEAMLESS_GUEST
|
|---|
| 287 | LogRel(("VBoxClient: shutting down seamless Guest Additions...\n"));
|
|---|
| 288 | gSeamless.uninit(2000);
|
|---|
| 289 | # endif /* SEAMLESS_GUEST defined */
|
|---|
| 290 | LogRel(("VBoxClient: shutting down dynamic guest resizing...\n"));
|
|---|
| 291 | gDisplayChange.uninit(2000);
|
|---|
| 292 | #endif /* DYNAMIC_RESIZE defined */
|
|---|
| 293 | #ifdef VBOX_X11_CLIPBOARD
|
|---|
| 294 | /* Connect to the host clipboard. */
|
|---|
| 295 | LogRel(("VBoxClient: shutting down clipboard Guest Additions...\n"));
|
|---|
| 296 | gClipboard.uninit(2000);
|
|---|
| 297 | #endif /* VBOX_X11_CLIPBOARD defined */
|
|---|
| 298 | }
|
|---|
| 299 | catch (std::exception e)
|
|---|
| 300 | {
|
|---|
| 301 | LogRel(("VBoxClient: failed to shut down Guest Additions - caught exception: %s\n", e.what()));
|
|---|
| 302 | rc = VERR_UNRESOLVED_ERROR;
|
|---|
| 303 | }
|
|---|
| 304 | catch (...)
|
|---|
| 305 | {
|
|---|
| 306 | LogRel(("VBoxClient: failed to shut down Guest Additions - caught unknown exception.\n"));
|
|---|
| 307 | rc = VERR_UNRESOLVED_ERROR;
|
|---|
| 308 | }
|
|---|
| 309 | VbglR3Term();
|
|---|
| 310 | return RT_SUCCESS(rc) ? 0 : 1;
|
|---|
| 311 | }
|
|---|
