LCOV - code coverage report
Current view: directory - dom/base - nsPluginArray.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 188 0 0.0 %
Date: 2012-06-02 Functions: 32 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Pierre Phaneuf <pp@ludusdesign.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsPluginArray.h"
      40                 : #include "nsMimeTypeArray.h"
      41                 : #include "Navigator.h"
      42                 : #include "nsIScriptGlobalObject.h"
      43                 : #include "nsIDOMNavigator.h"
      44                 : #include "nsIDOMMimeType.h"
      45                 : #include "nsIPluginHost.h"
      46                 : #include "nsIDocShell.h"
      47                 : #include "nsIWebNavigation.h"
      48                 : #include "nsDOMClassInfoID.h"
      49                 : #include "nsPluginError.h"
      50                 : #include "nsContentUtils.h"
      51                 : #include "nsPluginHost.h"
      52                 : 
      53                 : using namespace mozilla;
      54                 : using namespace mozilla::dom;
      55                 : 
      56               0 : nsPluginArray::nsPluginArray(Navigator* navigator,
      57                 :                              nsIDocShell *aDocShell)
      58                 :   : mNavigator(navigator),
      59                 :     mPluginHost(do_GetService(MOZ_PLUGIN_HOST_CONTRACTID)),
      60                 :     mPluginCount(0),
      61                 :     mPluginArray(nsnull),
      62               0 :     mDocShell(do_GetWeakReference(aDocShell))
      63                 : {
      64               0 : }
      65                 : 
      66               0 : nsPluginArray::~nsPluginArray()
      67                 : {
      68               0 :   if (mPluginArray != nsnull) {
      69               0 :     for (PRUint32 i = 0; i < mPluginCount; i++) {
      70               0 :       NS_IF_RELEASE(mPluginArray[i]);
      71                 :     }
      72               0 :     delete[] mPluginArray;
      73                 :   }
      74               0 : }
      75                 : 
      76                 : DOMCI_DATA(PluginArray, nsPluginArray)
      77                 : 
      78                 : // QueryInterface implementation for nsPluginArray
      79               0 : NS_INTERFACE_MAP_BEGIN(nsPluginArray)
      80               0 :   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMPluginArray)
      81               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMPluginArray)
      82               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(PluginArray)
      83               0 : NS_INTERFACE_MAP_END
      84                 : 
      85               0 : NS_IMPL_ADDREF(nsPluginArray)
      86               0 : NS_IMPL_RELEASE(nsPluginArray)
      87                 : 
      88                 : NS_IMETHODIMP
      89               0 : nsPluginArray::GetLength(PRUint32* aLength)
      90                 : {
      91               0 :   nsPluginHost *pluginHost = static_cast<nsPluginHost*>(mPluginHost.get());
      92               0 :   if (AllowPlugins() && pluginHost)
      93               0 :     return pluginHost->GetPluginCount(aLength);
      94                 :   
      95               0 :   *aLength = 0;
      96               0 :   return NS_OK;
      97                 : }
      98                 : 
      99                 : bool
     100               0 : nsPluginArray::AllowPlugins()
     101                 : {
     102               0 :   bool allowPlugins = false;
     103               0 :   nsCOMPtr<nsIDocShell> docShell = do_QueryReferent(mDocShell);
     104                 : 
     105               0 :   if (docShell)
     106               0 :     if (NS_FAILED(docShell->GetAllowPlugins(&allowPlugins)))
     107               0 :       allowPlugins = false;
     108                 : 
     109               0 :   return allowPlugins;
     110                 : }
     111                 : 
     112                 : nsIDOMPlugin*
     113               0 : nsPluginArray::GetItemAt(PRUint32 aIndex, nsresult* aResult)
     114                 : {
     115               0 :   *aResult = NS_OK;
     116                 : 
     117               0 :   if (!AllowPlugins())
     118               0 :     return nsnull;
     119                 : 
     120               0 :   if (mPluginArray == nsnull) {
     121               0 :     *aResult = GetPlugins();
     122               0 :     if (*aResult != NS_OK)
     123               0 :       return nsnull;
     124                 :   }
     125                 : 
     126               0 :   return aIndex < mPluginCount ? mPluginArray[aIndex] : nsnull;
     127                 : }
     128                 : 
     129                 : NS_IMETHODIMP
     130               0 : nsPluginArray::Item(PRUint32 aIndex, nsIDOMPlugin** aReturn)
     131                 : {
     132                 :   nsresult rv;
     133                 : 
     134               0 :   NS_IF_ADDREF(*aReturn = GetItemAt(aIndex, &rv));
     135                 : 
     136               0 :   return rv;
     137                 : }
     138                 : 
     139                 : nsIDOMPlugin*
     140               0 : nsPluginArray::GetNamedItem(const nsAString& aName, nsresult* aResult)
     141                 : {
     142               0 :   *aResult = NS_OK;
     143                 : 
     144               0 :   if (!AllowPlugins())
     145               0 :     return nsnull;
     146                 : 
     147               0 :   if (mPluginArray == nsnull) {
     148               0 :     *aResult = GetPlugins();
     149               0 :     if (*aResult != NS_OK)
     150               0 :       return nsnull;
     151                 :   }
     152                 : 
     153               0 :   for (PRUint32 i = 0; i < mPluginCount; i++) {
     154               0 :     nsAutoString pluginName;
     155               0 :     nsIDOMPlugin* plugin = mPluginArray[i];
     156               0 :     if (plugin->GetName(pluginName) == NS_OK && pluginName.Equals(aName)) {
     157               0 :       return plugin;
     158                 :     }
     159                 :   }
     160                 : 
     161               0 :   return nsnull;
     162                 : }
     163                 : 
     164                 : NS_IMETHODIMP
     165               0 : nsPluginArray::NamedItem(const nsAString& aName, nsIDOMPlugin** aReturn)
     166                 : {
     167               0 :   NS_PRECONDITION(nsnull != aReturn, "null arg");
     168                 : 
     169                 :   nsresult rv;
     170                 : 
     171               0 :   NS_IF_ADDREF(*aReturn = GetNamedItem(aName, &rv));
     172                 : 
     173               0 :   return rv;
     174                 : }
     175                 : 
     176                 : nsresult
     177               0 : nsPluginArray::GetPluginHost(nsIPluginHost** aPluginHost)
     178                 : {
     179               0 :   NS_ENSURE_ARG_POINTER(aPluginHost);
     180                 : 
     181               0 :   nsresult rv = NS_OK;
     182                 : 
     183               0 :   if (!mPluginHost) {
     184               0 :     mPluginHost = do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &rv);
     185                 : 
     186               0 :     if (NS_FAILED(rv)) {
     187               0 :       return rv;
     188                 :     }
     189                 :   }
     190                 : 
     191               0 :   *aPluginHost = mPluginHost;
     192               0 :   NS_IF_ADDREF(*aPluginHost);
     193                 : 
     194               0 :   return rv;
     195                 : }
     196                 : 
     197                 : void
     198               0 : nsPluginArray::Invalidate()
     199                 : {
     200               0 :   mDocShell = nsnull;
     201               0 :   mNavigator = nsnull;
     202               0 : }
     203                 : 
     204                 : NS_IMETHODIMP
     205               0 : nsPluginArray::Refresh(bool aReloadDocuments)
     206                 : {
     207               0 :   nsresult res = NS_OK;
     208               0 :   if (!AllowPlugins())
     209               0 :     return NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA;
     210                 : 
     211               0 :   if (!mPluginHost) {
     212               0 :     mPluginHost = do_GetService(MOZ_PLUGIN_HOST_CONTRACTID, &res);
     213                 :   }
     214                 : 
     215               0 :   if(NS_FAILED(res)) {
     216               0 :     return res;
     217                 :   }
     218                 : 
     219                 :   // NS_ERROR_PLUGINS_PLUGINSNOTCHANGED on reloading plugins indicates
     220                 :   // that plugins did not change and was not reloaded
     221               0 :   bool pluginsNotChanged = false;
     222               0 :   if(mPluginHost)
     223               0 :     pluginsNotChanged = (NS_ERROR_PLUGINS_PLUGINSNOTCHANGED == mPluginHost->ReloadPlugins(aReloadDocuments));
     224                 : 
     225                 :   // no need to reload the page if plugins have not been changed
     226                 :   // in fact, if we do reload we can hit recursive load problem, see bug 93351
     227               0 :   if(pluginsNotChanged)
     228               0 :     return res;
     229                 : 
     230               0 :   nsCOMPtr<nsIWebNavigation> webNav = do_QueryReferent(mDocShell);
     231                 : 
     232               0 :   if (mPluginArray != nsnull) {
     233               0 :     for (PRUint32 i = 0; i < mPluginCount; i++) 
     234               0 :       NS_IF_RELEASE(mPluginArray[i]);
     235                 : 
     236               0 :     delete[] mPluginArray;
     237                 :   }
     238                 : 
     239               0 :   mPluginCount = 0;
     240               0 :   mPluginArray = nsnull;
     241                 : 
     242               0 :   if (mNavigator)
     243               0 :     mNavigator->RefreshMIMEArray();
     244                 :   
     245               0 :   if (aReloadDocuments && webNav)
     246               0 :     webNav->Reload(nsIWebNavigation::LOAD_FLAGS_NONE);
     247                 : 
     248               0 :   return res;
     249                 : }
     250                 : 
     251                 : nsresult
     252               0 : nsPluginArray::GetPlugins()
     253                 : {
     254               0 :   nsresult rv = GetLength(&mPluginCount);
     255               0 :   if (NS_SUCCEEDED(rv)) {
     256               0 :     mPluginArray = new nsIDOMPlugin*[mPluginCount];
     257               0 :     if (!mPluginArray)
     258               0 :       return NS_ERROR_OUT_OF_MEMORY;
     259                 : 
     260               0 :     if (!mPluginCount)
     261               0 :       return NS_OK;
     262                 : 
     263               0 :     nsPluginHost *pluginHost = static_cast<nsPluginHost*>(mPluginHost.get());
     264               0 :     rv = pluginHost->GetPlugins(mPluginCount, mPluginArray);
     265               0 :     if (NS_SUCCEEDED(rv)) {
     266                 :       // need to wrap each of these with a nsPluginElement, which
     267                 :       // is scriptable.
     268               0 :       for (PRUint32 i = 0; i < mPluginCount; i++) {
     269               0 :         nsIDOMPlugin* wrapper = new nsPluginElement(mPluginArray[i]);
     270               0 :         NS_IF_ADDREF(wrapper);
     271               0 :         mPluginArray[i] = wrapper;
     272                 :       }
     273                 :     } else {
     274                 :       /* XXX this code is all broken. If GetPlugins fails, there's no contract
     275                 :        *     explaining what should happen. Instead of deleting elements in an
     276                 :        *     array of random pointers, we mark the array as 0 length.
     277                 :        */
     278               0 :       mPluginCount = 0;
     279                 :     }
     280                 :   }
     281               0 :   return rv;
     282                 : }
     283                 : 
     284                 : //
     285                 : 
     286               0 : nsPluginElement::nsPluginElement(nsIDOMPlugin* plugin)
     287                 : {
     288               0 :   mPlugin = plugin;  // don't AddRef, see nsPluginArray::Item.
     289               0 :   mMimeTypeCount = 0;
     290               0 :   mMimeTypeArray = nsnull;
     291               0 : }
     292                 : 
     293               0 : nsPluginElement::~nsPluginElement()
     294                 : {
     295               0 :   NS_IF_RELEASE(mPlugin);
     296                 : 
     297               0 :   if (mMimeTypeArray != nsnull) {
     298               0 :     for (PRUint32 i = 0; i < mMimeTypeCount; i++) {
     299               0 :       nsMimeType* mt = static_cast<nsMimeType*>(mMimeTypeArray[i]);
     300               0 :       if (mt) {
     301               0 :         mt->DetachPlugin();
     302               0 :         NS_RELEASE(mt);
     303                 :       }
     304                 :     }
     305               0 :     delete[] mMimeTypeArray;
     306                 :   }
     307               0 : }
     308                 : 
     309                 : 
     310                 : DOMCI_DATA(Plugin, nsPluginElement)
     311                 : 
     312                 : // QueryInterface implementation for nsPluginElement
     313               0 : NS_INTERFACE_MAP_BEGIN(nsPluginElement)
     314               0 :   NS_INTERFACE_MAP_ENTRY(nsISupports)
     315               0 :   NS_INTERFACE_MAP_ENTRY(nsIDOMPlugin)
     316               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(Plugin)
     317               0 : NS_INTERFACE_MAP_END
     318                 : 
     319                 : 
     320               0 : NS_IMPL_ADDREF(nsPluginElement)
     321               0 : NS_IMPL_RELEASE(nsPluginElement)
     322                 : 
     323                 : 
     324                 : NS_IMETHODIMP
     325               0 : nsPluginElement::GetDescription(nsAString& aDescription)
     326                 : {
     327               0 :   return mPlugin->GetDescription(aDescription);
     328                 : }
     329                 : 
     330                 : NS_IMETHODIMP
     331               0 : nsPluginElement::GetFilename(nsAString& aFilename)
     332                 : {
     333               0 :   return mPlugin->GetFilename(aFilename);
     334                 : }
     335                 : 
     336                 : NS_IMETHODIMP
     337               0 : nsPluginElement::GetVersion(nsAString& aVersion)
     338                 : {
     339               0 :   return mPlugin->GetVersion(aVersion);
     340                 : }
     341                 : 
     342                 : NS_IMETHODIMP
     343               0 : nsPluginElement::GetName(nsAString& aName)
     344                 : {
     345               0 :   return mPlugin->GetName(aName);
     346                 : }
     347                 : 
     348                 : NS_IMETHODIMP
     349               0 : nsPluginElement::GetLength(PRUint32* aLength)
     350                 : {
     351               0 :   return mPlugin->GetLength(aLength);
     352                 : }
     353                 : 
     354                 : nsIDOMMimeType*
     355               0 : nsPluginElement::GetItemAt(PRUint32 aIndex, nsresult *aResult)
     356                 : {
     357               0 :   if (mMimeTypeArray == nsnull) {
     358               0 :     *aResult = GetMimeTypes();
     359               0 :     if (*aResult != NS_OK)
     360               0 :       return nsnull;
     361                 :   }
     362                 : 
     363               0 :   if (aIndex >= mMimeTypeCount) {
     364               0 :     *aResult = NS_ERROR_FAILURE;
     365                 : 
     366               0 :     return nsnull;
     367                 :   }
     368                 : 
     369               0 :   *aResult = NS_OK;
     370                 : 
     371               0 :   return mMimeTypeArray[aIndex];
     372                 : }
     373                 : 
     374                 : NS_IMETHODIMP
     375               0 : nsPluginElement::Item(PRUint32 aIndex, nsIDOMMimeType** aReturn)
     376                 : {
     377                 :   nsresult rv;
     378                 : 
     379               0 :   NS_IF_ADDREF(*aReturn = GetItemAt(aIndex, &rv));
     380                 : 
     381               0 :   return rv;
     382                 : }
     383                 : 
     384                 : nsIDOMMimeType*
     385               0 : nsPluginElement::GetNamedItem(const nsAString& aName, nsresult *aResult)
     386                 : {
     387               0 :   if (mMimeTypeArray == nsnull) {
     388               0 :     *aResult = GetMimeTypes();
     389               0 :     if (*aResult != NS_OK)
     390               0 :       return nsnull;
     391                 :   }
     392                 : 
     393               0 :   *aResult = NS_OK;
     394               0 :   for (PRUint32 i = 0; i < mMimeTypeCount; i++) {
     395               0 :     nsAutoString type;
     396               0 :     nsIDOMMimeType* mimeType = mMimeTypeArray[i];
     397               0 :     if (mimeType->GetType(type) == NS_OK && type.Equals(aName)) {
     398               0 :       return mimeType;
     399                 :     }
     400                 :   }
     401                 : 
     402               0 :   return nsnull;
     403                 : }
     404                 : 
     405                 : NS_IMETHODIMP
     406               0 : nsPluginElement::NamedItem(const nsAString& aName, nsIDOMMimeType** aReturn)
     407                 : {
     408                 :   nsresult rv;
     409                 : 
     410               0 :   NS_IF_ADDREF(*aReturn = GetNamedItem(aName, &rv));
     411                 : 
     412               0 :   return rv;
     413                 : }
     414                 : 
     415                 : nsresult
     416               0 : nsPluginElement::GetMimeTypes()
     417                 : {
     418               0 :   nsresult rv = mPlugin->GetLength(&mMimeTypeCount);
     419               0 :   if (rv == NS_OK) {
     420               0 :     mMimeTypeArray = new nsIDOMMimeType*[mMimeTypeCount];
     421               0 :     if (mMimeTypeArray == nsnull)
     422               0 :       return NS_ERROR_OUT_OF_MEMORY;
     423               0 :     for (PRUint32 i = 0; i < mMimeTypeCount; i++) {
     424               0 :       nsCOMPtr<nsIDOMMimeType> mimeType;
     425               0 :       rv = mPlugin->Item(i, getter_AddRefs(mimeType));
     426               0 :       if (rv != NS_OK)
     427                 :         break;
     428               0 :       mimeType = new nsMimeType(this, mimeType);
     429               0 :       NS_IF_ADDREF(mMimeTypeArray[i] = mimeType);
     430                 :     }
     431                 :   }
     432               0 :   return rv;
     433                 : }

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