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Diffstat (limited to 'unix/vncviewer/vncviewer.cxx')
| -rw-r--r-- | unix/vncviewer/vncviewer.cxx | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/unix/vncviewer/vncviewer.cxx b/unix/vncviewer/vncviewer.cxx deleted file mode 100644 index e418267d..00000000 --- a/unix/vncviewer/vncviewer.cxx +++ /dev/null @@ -1,423 +0,0 @@ -/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved. - * - * This 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 software 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 software; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, - * USA. - */ -// -// All-new VNC viewer for X. -// - -#include <string.h> -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/wait.h> -#include <unistd.h> -#include <errno.h> -#include <signal.h> -#include <locale.h> -#include <os/os.h> -#include <rfb/Logger_stdio.h> -#include <rfb/SecurityClient.h> -#include <rfb/LogWriter.h> -#include <network/TcpSocket.h> -#include "TXWindow.h" -#include "TXMsgBox.h" -#include "CConn.h" - -#include "gettext.h" -#define _(String) gettext (String) -#define gettext_noop(String) String -#define N_(String) gettext_noop (String) - -rfb::LogWriter vlog("main"); - -using namespace network; -using namespace rfb; -using namespace std; - -IntParameter pointerEventInterval("PointerEventInterval", - "Time in milliseconds to rate-limit" - " successive pointer events", 0); -IntParameter wmDecorationWidth("WMDecorationWidth", "Width of window manager " - "decoration around a window", 6); -IntParameter wmDecorationHeight("WMDecorationHeight", "Height of window " - "manager decoration around a window", 24); -StringParameter passwordFile("PasswordFile", - "Password file for VNC authentication", ""); -AliasParameter passwd("passwd", "Alias for PasswordFile", &passwordFile); - -BoolParameter useLocalCursor("UseLocalCursor", - "Render the mouse cursor locally", true); -BoolParameter dotWhenNoCursor("DotWhenNoCursor", - "Show the dot cursor when the server sends an " - "invisible cursor", true); -BoolParameter autoSelect("AutoSelect", - "Auto select pixel format and encoding. " - "Default if PreferredEncoding and FullColor are not specified.", - true); -BoolParameter fullColour("FullColor", - "Use full color", true); -AliasParameter fullColourAlias("FullColour", "Alias for FullColor", &fullColour); -IntParameter lowColourLevel("LowColorLevel", - "Color level to use on slow connections. " - "0 = Very Low (8 colors), 1 = Low (64 colors), " - "2 = Medium (256 colors)", 2); -AliasParameter lowColourLevelAlias("LowColourLevel", "Alias for LowColorLevel", &lowColourLevel); -StringParameter preferredEncoding("PreferredEncoding", - "Preferred encoding to use (Tight, ZRLE, Hextile or" - " Raw)", "Tight"); -BoolParameter fullScreen("FullScreen", "Full screen mode", false); -BoolParameter viewOnly("ViewOnly", - "Don't send any mouse or keyboard events to the server", - false); -BoolParameter shared("Shared", - "Don't disconnect other viewers upon connection - " - "share the desktop instead", - false); -BoolParameter acceptClipboard("AcceptClipboard", - "Accept clipboard changes from the server", - true); -BoolParameter sendClipboard("SendClipboard", - "Send clipboard changes to the server", true); -BoolParameter sendPrimary("SendPrimary", - "Send the primary selection and cut buffer to the " - "server as well as the clipboard selection", - true); - -StringParameter desktopSize("DesktopSize", - "Reconfigure desktop size on the server on " - "connect (if possible)", ""); - -BoolParameter listenMode("listen", "Listen for connections from VNC servers", - false); -StringParameter geometry("geometry", "X geometry specification", ""); -StringParameter displayname("display", "The X display", ""); - -StringParameter via("via", "Gateway to tunnel via", ""); - -BoolParameter customCompressLevel("CustomCompressLevel", - "Use custom compression level. " - "Default if CompressLevel is specified.", false); - -IntParameter compressLevel("CompressLevel", - "Use specified compression level" - "0 = Low, 9 = High", - 6); - -BoolParameter noJpeg("NoJPEG", - "Disable lossy JPEG compression in Tight encoding.", - false); - -IntParameter qualityLevel("QualityLevel", - "JPEG quality level. " - "0 = Low, 9 = High", - 8); - -char aboutText[1024]; -char* programName; -extern char buildtime[]; - -static void CleanupSignalHandler(int sig) -{ - // CleanupSignalHandler allows C++ object cleanup to happen because it calls - // exit() rather than the default which is to abort. - vlog.info("CleanupSignalHandler called"); - exit(1); -} - -// XLoginIconifier is a class which iconifies the XDM login window when it has -// grabbed the keyboard, thus releasing the grab, allowing the viewer to use -// the keyboard. It remaps the xlogin window on exit. -class XLoginIconifier { -public: - Display* dpy; - Window xlogin; - XLoginIconifier() : dpy(0), xlogin(0) {} - void iconify(Display* dpy_) { - dpy = dpy_; - if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), False, GrabModeSync, - GrabModeSync, CurrentTime) == GrabSuccess) { - XUngrabKeyboard(dpy, CurrentTime); - } else { - xlogin = TXWindow::windowWithName(dpy, DefaultRootWindow(dpy), "xlogin"); - if (xlogin) { - XIconifyWindow(dpy, xlogin, DefaultScreen(dpy)); - XSync(dpy, False); - } - } - } - ~XLoginIconifier() { - if (xlogin) { - fprintf(stderr,"~XLoginIconifier remapping xlogin\n"); - XMapWindow(dpy, xlogin); - XFlush(dpy); - sleep(1); - } - } -}; - -static XLoginIconifier xloginIconifier; - -static void usage() -{ - fprintf(stderr, - "\nusage: %s [parameters] [host:displayNum] [parameters]\n" - " %s [parameters] -listen [port] [parameters]\n", - programName,programName); - fprintf(stderr,"\n" - "Parameters can be turned on with -<param> or off with -<param>=0\n" - "Parameters which take a value can be specified as " - "-<param> <value>\n" - "Other valid forms are <param>=<value> -<param>=<value> " - "--<param>=<value>\n" - "Parameter names are case-insensitive. The parameters are:\n\n"); - Configuration::listParams(79, 14); - exit(1); -} - -/* Tunnelling support. */ -static void -interpretViaParam (char **gatewayHost, char **remoteHost, - int *remotePort, char **vncServerName, - int localPort) -{ - const int SERVER_PORT_OFFSET = 5900; - char *pos = strchr (*vncServerName, ':'); - if (pos == NULL) - *remotePort = SERVER_PORT_OFFSET; - else { - int portOffset = SERVER_PORT_OFFSET; - size_t len; - *pos++ = '\0'; - len = strlen (pos); - if (*pos == ':') { - /* Two colons is an absolute port number, not an offset. */ - pos++; - len--; - portOffset = 0; - } - if (!len || strspn (pos, "-0123456789") != len ) - usage (); - *remotePort = atoi (pos) + portOffset; - } - - if (**vncServerName != '\0') - *remoteHost = *vncServerName; - - *gatewayHost = strDup (via.getValueStr ()); - *vncServerName = new char[50]; - sprintf (*vncServerName, "localhost::%d", localPort); -} - -#ifndef HAVE_SETENV -int -setenv(const char *envname, const char * envval, int overwrite) -{ - if (envname && envval) { - char * envp = NULL; - envp = (char*)malloc(strlen(envname) + strlen(envval) + 2); - if (envp) { - // The putenv API guarantees memory leaks when - // changing environment variables repeatedly. - sprintf(envp, "%s=%s", envname, envval); - - // Cannot free envp - putenv(envp); - return(0); - } - } - return(-1); -} -#endif - -static void -createTunnel (const char *gatewayHost, const char *remoteHost, - int remotePort, int localPort) -{ - char *cmd = getenv ("VNC_VIA_CMD"); - char *percent; - char lport[10], rport[10]; - sprintf (lport, "%d", localPort); - sprintf (rport, "%d", remotePort); - setenv ("G", gatewayHost, 1); - setenv ("H", remoteHost, 1); - setenv ("R", rport, 1); - setenv ("L", lport, 1); - if (!cmd) - cmd = "/usr/bin/ssh -f -L \"$L\":\"$H\":\"$R\" \"$G\" sleep 20"; - /* Compatibility with TigerVNC's method. */ - while ((percent = strchr (cmd, '%')) != NULL) - *percent = '$'; - system (cmd); -} - -int main(int argc, char** argv) -{ - setlocale(LC_ALL, ""); - bindtextdomain(PACKAGE_NAME, LOCALEDIR); - textdomain(PACKAGE_NAME); - - const char englishAbout[] = N_("TigerVNC Viewer for X version %s - built %s\n" - "Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)\n" - "See http://www.tigervnc.org for information on TigerVNC."); - - rfb::SecurityClient::setDefaults(); - - // Write about text to console, still using normal locale codeset - snprintf(aboutText, sizeof(aboutText), - gettext(englishAbout), PACKAGE_VERSION, buildtime); - fprintf(stderr,"\n%s\n", aboutText); - - // Set gettext codeset to what our GUI toolkit uses. Since we are - // passing strings from strerror/gai_strerror to the GUI, these must - // be in GUI codeset as well. - bind_textdomain_codeset(PACKAGE_NAME, "iso-8859-1"); - bind_textdomain_codeset("libc", "iso-8859-1"); - - // Re-create the aboutText for the GUI, now using GUI codeset - snprintf(aboutText, sizeof(aboutText), - gettext(englishAbout), PACKAGE_VERSION, buildtime); - - rfb::initStdIOLoggers(); - rfb::LogWriter::setLogParams("*:stderr:30"); - - signal(SIGHUP, CleanupSignalHandler); - signal(SIGINT, CleanupSignalHandler); - signal(SIGTERM, CleanupSignalHandler); - - programName = argv[0]; - char* vncServerName = 0; - Display* dpy = 0; - - Configuration::enableViewerParams(); - - for (int i = 1; i < argc; i++) { - if (Configuration::setParam(argv[i])) - continue; - - if (argv[i][0] == '-') { - if (i+1 < argc) { - if (Configuration::setParam(&argv[i][1], argv[i+1])) { - i++; - continue; - } - } - usage(); - } - - vncServerName = argv[i]; - } - - // Create .vnc in the user's home directory if it doesn't already exist - char* homeDir = NULL; - if (getvnchomedir(&homeDir) == -1) { - vlog.error("Could not create VNC home directory: can't obtain home " - "directory path."); - } else { - int result = mkdir(homeDir, 0755); - if (result == -1 && errno != EEXIST) - vlog.error("Could not create VNC home directory: %s.", strerror(errno)); - delete [] homeDir; - } - - if (!::autoSelect.hasBeenSet()) { - // Default to AutoSelect=0 if -PreferredEncoding or -FullColor is used - ::autoSelect.setParam(!::preferredEncoding.hasBeenSet() - && !::fullColour.hasBeenSet() - && !::fullColourAlias.hasBeenSet()); - } - if (!::fullColour.hasBeenSet() && !::fullColourAlias.hasBeenSet()) { - // Default to FullColor=0 if AutoSelect=0 && LowColorLevel is set - if (!::autoSelect && (::lowColourLevel.hasBeenSet() || - ::lowColourLevelAlias.hasBeenSet())) { - ::fullColour.setParam(false); - } - } - if (!::customCompressLevel.hasBeenSet()) { - // Default to CustomCompressLevel=1 if CompressLevel is used. - ::customCompressLevel.setParam(::compressLevel.hasBeenSet()); - } - - try { - /* Tunnelling support. */ - if (strlen (via.getValueStr ()) > 0) { - char *gatewayHost = ""; - char *remoteHost = "localhost"; - int localPort = findFreeTcpPort (); - int remotePort; - if (!vncServerName) - usage(); - interpretViaParam (&gatewayHost, &remoteHost, &remotePort, - &vncServerName, localPort); - createTunnel (gatewayHost, remoteHost, remotePort, localPort); - } - - Socket* sock = 0; - - if (listenMode) { - int port = 5500; - if (vncServerName && isdigit(vncServerName[0])) - port = atoi(vncServerName); - - TcpListener listener(NULL, port); - - vlog.info("Listening on port %d\n",port); - - while (true) { - sock = listener.accept(); - int pid = fork(); - if (pid < 0) { perror("fork"); exit(1); } - if (pid == 0) break; // child - delete sock; - int status; - while (wait3(&status, WNOHANG, 0) > 0) ; - } - } - - CharArray displaynameStr(displayname.getData()); - if (!(dpy = XOpenDisplay(TXWindow::strEmptyToNull(displaynameStr.buf)))) { - fprintf(stderr,"%s: unable to open display \"%s\"\n", - programName, XDisplayName(displaynameStr.buf)); - exit(1); - } - - TXWindow::init(dpy, "Vncviewer"); - xloginIconifier.iconify(dpy); - CConn cc(dpy, argc, argv, sock, vncServerName, listenMode); - - // X events are processed whenever reading from the socket would block. - - while (true) { - cc.getInStream()->check(1); - cc.processMsg(); - } - - } catch (rdr::EndOfStream& e) { - vlog.info(e.str()); - } catch (rdr::Exception& e) { - vlog.error(e.str()); - if (dpy) { - TXMsgBox msgBox(dpy, e.str(), MB_OK, "VNC Viewer: Information"); - msgBox.show(); - } - return 1; - } - - return 0; -} |