Mozilla/mozilla/modules/plugin/base/src/nsIPluginHost.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
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 *
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#ifndef nsIPluginHost_h___
#define nsIPluginHost_h___

#include "nsplugindefs.h"
#include "nsIFactory.h"
#include "nsString.h"
#include "nsIPluginInstanceOwner.h"
#include "nsIStreamListener.h"
#include "nsNetUtil.h"
#include "nsIStringStream.h"
#include "prlink.h"  // for PRLibrary

class nsIPlugin;
class nsIURI;
class nsIDOMPlugin;

#define NS_IPLUGINHOST_IID \
{ 0x264c0640, 0x1c31, 0x11d2, \
{ 0xa8, 0x2e, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }

struct nsIPluginHost : public nsIFactory
{
public:
  NS_DEFINE_STATIC_IID_ACCESSOR(NS_IPLUGINHOST_IID)

  NS_IMETHOD
  Init(void) = 0;

  NS_IMETHOD
  Destroy(void) = 0;

  NS_IMETHOD
  LoadPlugins(void) = 0;
  
  NS_IMETHOD
  GetPluginFactory(const char *aMimeType, nsIPlugin** aPlugin) = 0;

  NS_IMETHOD
  InstantiateEmbededPlugin(const char *aMimeType, nsIURI* aURL, nsIPluginInstanceOwner *aOwner) = 0;

  NS_IMETHOD
  InstantiateFullPagePlugin(const char *aMimeType, nsString& aURLSpec, nsIStreamListener *&aStreamListener, nsIPluginInstanceOwner *aOwner) = 0;

  NS_IMETHOD
  SetUpPluginInstance(const char *aMimeType, nsIURI *aURL, nsIPluginInstanceOwner *aOwner) = 0;

  NS_IMETHOD
  IsPluginEnabledForType(const char* aMimeType) = 0;

  NS_IMETHOD
  IsPluginEnabledForExtension(const char* aExtension, const char* &aMimeType) = 0;

  NS_IMETHOD
  GetPluginCount(PRUint32* aPluginCount) = 0;
  
  NS_IMETHOD
  GetPlugins(PRUint32 aPluginCount, nsIDOMPlugin* aPluginArray[]) = 0;

  NS_IMETHOD
  StopPluginInstance(nsIPluginInstance* aInstance) = 0;

  NS_IMETHOD
  HandleBadPlugin(PRLibrary* aLibrary, nsIPluginInstance *instance) = 0;
};



/**
 * Used for creating the correct input stream for plugins
 * We can either have raw data (with or without \r\n\r\n) or a path to a file (but it must be native!)
 * When making an nsIInputStream stream for the plugins POST data, be sure to take into 
 * account that it could be binary and full of nulls, see bug 105417. Also, we need 
 * to make a copy of the buffer because the plugin may have allocated it on the stack.
 * For an example of this, see Shockwave registration or bug 108966
 * We malloc only for headers here, buffer for data itself is malloced by ParsePostBufferToFixHeaders()
 */

inline nsresult
NS_NewPluginPostDataStream(nsIInputStream **result,
                           const char *data,
                           PRUint32 contentLength,
                           PRBool isFile = PR_FALSE,
                           PRBool headers = PR_FALSE)
{
  nsresult rv = NS_ERROR_UNEXPECTED;
  if (!data)
    return rv;

  if (!isFile) { // do raw data case first
    if (contentLength < 1)
      return rv;
    
    char *buf = (char*) data;
    if (headers) {
      // in assumption we got correctly formated headers just passed in
      if (!(buf = (char*)nsMemory::Alloc(contentLength)))
        return NS_ERROR_OUT_OF_MEMORY;
      memcpy(buf, data, contentLength);
    }
    nsCOMPtr<nsIStringInputStream> sis = do_CreateInstance("@mozilla.org/io/string-input-stream;1",&rv);
    if (NS_SUCCEEDED(rv)) {
      sis->AdoptData(buf, contentLength);  // let the string stream manage our data
      rv = CallQueryInterface(sis, result);
    }
  } else {
    nsCOMPtr<nsILocalFile> file; // tmp file will be deleted on release of stream
    nsCOMPtr<nsIInputStream> fileStream;
    if (NS_SUCCEEDED(rv = NS_NewNativeLocalFile(nsDependentCString(data), PR_FALSE, getter_AddRefs(file))) &&
        NS_SUCCEEDED(rv = NS_NewLocalFileInputStream(getter_AddRefs(fileStream),
                                     file,
                                     PR_RDONLY,
                                     0600,
                                     nsIFileInputStream::DELETE_ON_CLOSE |
                                     nsIFileInputStream::CLOSE_ON_EOF))
                                     ) 
    {
      // wrap the file stream with a buffered input stream
      return NS_NewBufferedInputStream(result, fileStream, 8192);
    }
  }
  return rv;
}

#endif // nsIPluginHost_h___