TigerVNC SSH pipe

pipesocket.patch

diff --git a/common/network/Socket.h b/common/network/Socket.h
index 378a900..11a4318 100644
--- a/common/network/Socket.h
+++ b/common/network/Socket.h
@@ -43,7 +43,7 @@ namespace network {
     }
     rdr::FdInStream &inStream() {return *instream;}
     rdr::FdOutStream &outStream() {return *outstream;}
-    int getFd() {return outstream->getFd();}
+    int getFd() {return instream->getFd();}
 
     // if shutdown() is overridden then the override MUST call on to here
     virtual void shutdown() {isShutdown_ = true;}
diff --git a/vncviewer/CConn.cxx b/vncviewer/CConn.cxx
index f8b45af..f561377 100644
--- a/vncviewer/CConn.cxx
+++ b/vncviewer/CConn.cxx
@@ -49,6 +49,7 @@
 #include "i18n.h"
 #include "parameters.h"
 #include "vncviewer.h"
+#include "PipeSocket.h"
 
 #ifdef WIN32
 #include "win32.h"
@@ -105,10 +106,14 @@ CConn::CConn(const char* vncServerName, network::Socket* socket=NULL)
 
   if(sock == NULL) {
     try {
+#if 0
       getHostAndPort(vncServerName, &serverHost, &serverPort);
 
       sock = new network::TcpSocket(serverHost, serverPort);
       vlog.info(_("connected to host %s port %d"), serverHost, serverPort);
+#endif
+      char *args[] = { "/bin/sh", "-c", (char *)vncServerName, NULL };
+      sock = new PipeSocket(args[0], args);
     } catch (rdr::Exception& e) {
       vlog.error("%s", e.str());
       fl_alert("%s", e.str());
diff --git a/vncviewer/PipeSocket.h b/vncviewer/PipeSocket.h
new file mode 100644
index 0000000..80f0bb8
--- /dev/null
+++ b/vncviewer/PipeSocket.h
@@ -0,0 +1,48 @@
+#ifndef WIN32
+#include <unistd.h>
+#endif
+
+#include <network/Socket.h>
+
+class PipeSocket : public network::Socket {
+  public:
+    PipeSocket(const char *path, char *const args[]) {
+#ifdef WIN32
+      throw rdr::SystemException(_("pipe is only supported on non-Windows platforms"));
+#else
+      int stdin_fds[2];
+      int stdout_fds[2];
+
+      pipe(stdin_fds);
+      pipe(stdout_fds);
+
+      if (fork() == 0) {
+        dup2(stdin_fds[0], STDIN_FILENO);
+        dup2(stdout_fds[1], STDOUT_FILENO);
+
+        close(stdin_fds[1]);
+        close(stdout_fds[0]);
+        close(STDERR_FILENO);
+
+        execv(path, args);
+        perror("execv");
+        exit(1);
+      }
+
+      close(stdin_fds[0]);
+      close(stdout_fds[1]);
+
+      instream = new rdr::FdInStream(stdout_fds[0]);
+      outstream = new rdr::FdOutStream(stdin_fds[1]);
+      ownStreams = true;
+#endif
+    }
+
+    int getMyPort() { return 0; };
+
+    char* getPeerAddress() { return "pipe"; };
+    int getPeerPort() { return 0; }
+    char* getPeerEndpoint() { return "pipe"; }
+
+    bool sameMachine() { return 0; }
+};

vncpipe.pl

#!/bin/perl

use strict;
use POSIX;
use IO::Socket::UNIX;
use IO::Select;

my $spath = '.Xvnc.sock';

if (!-e $spath) {
    my $pid;
    my $server = IO::Socket::UNIX->new(
        Type    => SOCK_STREAM(),
        Local   => $spath,
        Listen  => 1,
    ) or die "Failed to open $spath: $!";

    if (!defined($pid = fork())) {
        die "cannot fork: $!";
    } elsif ($pid == 0) {
        POSIX::dup2($server->fileno(), 0);
        POSIX::close(1);
        POSIX::close(2);

        open STDOUT, '>/dev/null';
        open STDERR, '>/dev/null';

        system "/usr/bin/xinit", "--", "/usr/bin/Xvnc", "-inetd", "-nolisten", "tcp", "-once", "-SecurityTypes", "none";
        unlink $spath;
        exit;
    }
}

my $pipe = IO::Socket::UNIX->new(
    Type    => SOCK_STREAM(),
    Peer    => $spath,
) or die;

my $select = IO::Select->new();

$select->add(\*STDIN);
$select->add($pipe);

while (my @ready = $select->can_read()) {
    foreach my $fh (@ready) {
        my $buf;
        if ($fh == \*STDIN) {
            my $len = sysread STDIN, $buf, 1024;
            $len > 0 || exit;
            syswrite $pipe, $buf, $len;
        } else {
            my $len = sysread $pipe, $buf, 1024;
            $len > 0 || exit;
            syswrite STDOUT, $buf, $len;
        }
    }
}