gecko-dev/uriloader/exthandler/nsLocalHandlerApp.cpp

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 * The Original Code is the Mozilla browser.
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 * The Initial Developer of the Original Code is 
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 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Dan Mosedale <dmose@mozilla.org>
 *   Myk Melez <myk@mozilla.org>
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#include "nsLocalHandlerApp.h"
#include "nsIURI.h"
#include "nsIProcess.h"

// XXX why does nsMIMEInfoImpl have a threadsafe nsISupports?  do we need one 
// here too?
NS_IMPL_ISUPPORTS2(nsLocalHandlerApp, nsILocalHandlerApp, nsIHandlerApp)

////////////////////////////////////////////////////////////////////////////////
//// nsIHandlerApp

NS_IMETHODIMP nsLocalHandlerApp::GetName(nsAString& aName)
{
  if (mName.IsEmpty() && mExecutable) {
    // Don't want to cache this, just in case someone resets the app
    // without changing the description....
    mExecutable->GetLeafName(aName);
  } else {
    aName.Assign(mName);
  }
  
  return NS_OK;
}

NS_IMETHODIMP nsLocalHandlerApp::SetName(const nsAString & aName)
{
  mName.Assign(aName);

  return NS_OK;
}

NS_IMETHODIMP
nsLocalHandlerApp::Equals(nsIHandlerApp *aHandlerApp, PRBool *_retval)
{
  NS_ENSURE_ARG_POINTER(aHandlerApp);

  // If the handler app isn't a local handler app, then it's not the same app.
  nsCOMPtr <nsILocalHandlerApp> localHandlerApp = do_QueryInterface(aHandlerApp);
  if (!localHandlerApp) {
    *_retval = PR_FALSE;
    return NS_OK;
  }

  // If either handler app doesn't have an executable, then they aren't
  // the same app.
  nsCOMPtr<nsIFile> executable;
  nsresult rv = localHandlerApp->GetExecutable(getter_AddRefs(executable));
  if (NS_FAILED(rv) || !executable || !mExecutable) {
    *_retval = PR_FALSE;
    return NS_OK;
  }

  return executable->Equals(mExecutable, _retval);
}

NS_IMETHODIMP
nsLocalHandlerApp::LaunchWithURI(nsIURI *aURI,
                                 nsIInterfaceRequestor *aWindowContext)
{
  // pass the entire URI to the handler.
  nsCAutoString spec;
  aURI->GetSpec(spec);
  return LaunchWithIProcess(spec);
}

nsresult
nsLocalHandlerApp::LaunchWithIProcess(const nsCString& aArg)
{
  nsresult rv;
  nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID, &rv);
  if (NS_FAILED(rv))
    return rv;

  if (NS_FAILED(rv = process->Init(mExecutable)))
    return rv;

  const char *string = aArg.get();

  PRUint32 pid;
  return process->Run(PR_FALSE, &string, 1, &pid);
}

////////////////////////////////////////////////////////////////////////////////
//// nsILocalHandlerApp

NS_IMETHODIMP nsLocalHandlerApp::GetExecutable(nsIFile **aExecutable)
{
  NS_IF_ADDREF(*aExecutable = mExecutable);
  return NS_OK;
}

NS_IMETHODIMP nsLocalHandlerApp::SetExecutable(nsIFile *aExecutable)
{
  mExecutable = aExecutable;
  return NS_OK;
}