Linux Virtual Printer Driver

cloud_print/virtual_driver/posix/printer_driver_util_linux.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cups/backend.h>
+
+#include "base/base_paths.h"
+#include "base/command_line.h"
+#include "base/file_path.h"
+#include "base/logging.h"
+#include "base/path_service.h"
+
+#include "cloud_print/virtual_driver/posix/printer_driver_util_posix.h"
+#include "cloud_print/virtual_driver/virtual_driver_switches.h"
+
+void LaunchPrintDialog(std::string output_path, std::string job_title,
+                       std::string current_user) {
+  std::string set_var;
+
+  // Set Environment variable to control display.
+  set_var="/home/" + current_user + "/.Xauthority";
+  if(setenv("DISPLAY",":0.0",0) == -1) {
+    LOG(ERROR) << "Unable to set DISPLAY environment variable";
+  }
+  if(setenv("XAUTHORITY",set_var.c_str(),0) == -1) {
+    LOG(ERROR) << "Unable to set XAUTHORITY environment variable";
+  }
+
+  // Construct the call to Chrome
+
+  FilePath chrome_path("google-chrome");
+  FilePath job_path(output_path);
+  CommandLine command_line(chrome_path);
+  command_line.AppendSwitchPath(switches::kCloudPrintFile,job_path);
+  command_line.AppendSwitchNative(switches::kCloudPrintJobTitle, job_title);
+  command_line.AppendSwitch(switches::kCloudPrintDeleteFile);
+  LOG(INFO) << "Call to chrome is " << command_line.GetCommandLineString();
+
+  if(system(command_line.GetCommandLineString().c_str())== -1 ) {
+    LOG(ERROR) << "Unable to call Chrome";
+    exit(CUPS_BACKEND_CANCEL);
+  }
+
+  else {
+    LOG(INFO) << "Call to Chrome succeeded";
+  }
+}
+