LCOV - code coverage report
Current view: directory - uriloader/exthandler - nsMIMEInfoImpl.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 192 108 56.2 %
Date: 2012-06-02 Functions: 38 25 65.8 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* vim:set ts=2 sw=2 sts=2 et: */
       3                 : /* ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is mozilla.org code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Netscape Communications Corporation.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      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 "nsMIMEInfoImpl.h"
      40                 : #include "nsXPIDLString.h"
      41                 : #include "nsReadableUtils.h"
      42                 : #include "nsStringEnumerator.h"
      43                 : #include "nsILocalFile.h"
      44                 : #include "nsIFileURL.h"
      45                 : #include "nsEscape.h"
      46                 : #include "nsNetUtil.h"
      47                 : #include "nsIURILoader.h"
      48                 : #include "nsCURILoader.h"
      49                 : 
      50                 : // nsISupports methods
      51             648 : NS_IMPL_THREADSAFE_ADDREF(nsMIMEInfoBase)
      52             648 : NS_IMPL_THREADSAFE_RELEASE(nsMIMEInfoBase)
      53                 : 
      54            1261 : NS_INTERFACE_MAP_BEGIN(nsMIMEInfoBase)
      55            1261 :     NS_INTERFACE_MAP_ENTRY(nsIHandlerInfo)
      56                 :     // This is only an nsIMIMEInfo if it's a MIME handler.
      57            1155 :     NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMIMEInfo, mClass == eMIMEInfo)
      58            1022 :     NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIHandlerInfo)
      59             832 : NS_INTERFACE_MAP_END_THREADSAFE
      60                 : 
      61                 : // nsMIMEInfoImpl methods
      62                 : 
      63                 : // Constructors for a MIME handler.
      64               0 : nsMIMEInfoBase::nsMIMEInfoBase(const char *aMIMEType) :
      65                 :     mSchemeOrType(aMIMEType),
      66                 :     mClass(eMIMEInfo),
      67                 :     mPreferredAction(nsIMIMEInfo::saveToDisk),
      68               0 :     mAlwaysAskBeforeHandling(true)
      69                 : {
      70               0 : }
      71                 : 
      72             120 : nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aMIMEType) :
      73                 :     mSchemeOrType(aMIMEType),
      74                 :     mClass(eMIMEInfo),
      75                 :     mPreferredAction(nsIMIMEInfo::saveToDisk),
      76             120 :     mAlwaysAskBeforeHandling(true)
      77                 : {
      78             120 : }
      79                 : 
      80                 : // Constructor for a handler that lets the caller specify whether this is a
      81                 : // MIME handler or a protocol handler.  In the long run, these will be distinct
      82                 : // classes (f.e. nsMIMEInfo and nsProtocolInfo), but for now we reuse this class
      83                 : // for both and distinguish between the two kinds of handlers via the aClass
      84                 : // argument to this method, which can be either eMIMEInfo or eProtocolInfo.
      85              25 : nsMIMEInfoBase::nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass) :
      86                 :     mSchemeOrType(aType),
      87                 :     mClass(aClass),
      88                 :     mPreferredAction(nsIMIMEInfo::saveToDisk),
      89              25 :     mAlwaysAskBeforeHandling(true)
      90                 : {
      91              25 : }
      92                 : 
      93             145 : nsMIMEInfoBase::~nsMIMEInfoBase()
      94                 : {
      95             290 : }
      96                 : 
      97                 : NS_IMETHODIMP
      98               3 : nsMIMEInfoBase::GetFileExtensions(nsIUTF8StringEnumerator** aResult)
      99                 : {
     100               3 :   return NS_NewUTF8StringEnumerator(aResult, &mExtensions, this);
     101                 : }
     102                 : 
     103                 : NS_IMETHODIMP
     104              10 : nsMIMEInfoBase::ExtensionExists(const nsACString& aExtension, bool *_retval)
     105                 : {
     106              10 :     NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
     107              10 :     bool found = false;
     108              10 :     PRUint32 extCount = mExtensions.Length();
     109              10 :     if (extCount < 1) return NS_OK;
     110                 : 
     111              18 :     for (PRUint8 i=0; i < extCount; i++) {
     112              18 :         const nsCString& ext = mExtensions[i];
     113              18 :         if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
     114               9 :             found = true;
     115               9 :             break;
     116                 :         }
     117                 :     }
     118                 : 
     119               9 :     *_retval = found;
     120               9 :     return NS_OK;
     121                 : }
     122                 : 
     123                 : NS_IMETHODIMP
     124              16 : nsMIMEInfoBase::GetPrimaryExtension(nsACString& _retval)
     125                 : {
     126              16 :     if (!mExtensions.Length())
     127               1 :       return NS_ERROR_NOT_INITIALIZED;
     128                 : 
     129              15 :     _retval = mExtensions[0];
     130              15 :     return NS_OK;    
     131                 : }
     132                 : 
     133                 : NS_IMETHODIMP
     134               9 : nsMIMEInfoBase::SetPrimaryExtension(const nsACString& aExtension)
     135                 : {
     136               9 :   NS_ASSERTION(!aExtension.IsEmpty(), "no extension");
     137               9 :   PRUint32 extCount = mExtensions.Length();
     138                 :   PRUint8 i;
     139               9 :   bool found = false;
     140              18 :   for (i=0; i < extCount; i++) {
     141              18 :     const nsCString& ext = mExtensions[i];
     142              18 :     if (ext.Equals(aExtension, nsCaseInsensitiveCStringComparator())) {
     143               9 :       found = true;
     144               9 :       break;
     145                 :     }
     146                 :   }
     147               9 :   if (found) {
     148               9 :     mExtensions.RemoveElementAt(i);
     149                 :   }
     150                 : 
     151               9 :   mExtensions.InsertElementAt(0, aExtension);
     152                 :   
     153               9 :   return NS_OK;
     154                 : }
     155                 : 
     156                 : NS_IMETHODIMP
     157              44 : nsMIMEInfoBase::AppendExtension(const nsACString& aExtension)
     158                 : {
     159              44 :   mExtensions.AppendElement(aExtension);
     160              44 :   return NS_OK;
     161                 : }
     162                 : 
     163                 : NS_IMETHODIMP
     164             329 : nsMIMEInfoBase::GetType(nsACString& aType)
     165                 : {
     166             329 :     if (mSchemeOrType.IsEmpty())
     167               0 :         return NS_ERROR_NOT_INITIALIZED;
     168                 : 
     169             329 :     aType = mSchemeOrType;
     170             329 :     return NS_OK;
     171                 : }
     172                 : 
     173                 : NS_IMETHODIMP
     174              26 : nsMIMEInfoBase::GetMIMEType(nsACString& aMIMEType)
     175                 : {
     176              26 :     if (mSchemeOrType.IsEmpty())
     177               0 :         return NS_ERROR_NOT_INITIALIZED;
     178                 : 
     179              26 :     aMIMEType = mSchemeOrType;
     180              26 :     return NS_OK;
     181                 : }
     182                 : 
     183                 : NS_IMETHODIMP
     184               4 : nsMIMEInfoBase::GetDescription(nsAString& aDescription)
     185                 : {
     186               4 :     aDescription = mDescription;
     187               4 :     return NS_OK;
     188                 : }
     189                 : 
     190                 : NS_IMETHODIMP
     191              43 : nsMIMEInfoBase::SetDescription(const nsAString& aDescription) 
     192                 : {
     193              43 :     mDescription = aDescription;
     194              43 :     return NS_OK;
     195                 : }
     196                 : 
     197                 : NS_IMETHODIMP
     198               0 : nsMIMEInfoBase::Equals(nsIMIMEInfo *aMIMEInfo, bool *_retval)
     199                 : {
     200               0 :     if (!aMIMEInfo) return NS_ERROR_NULL_POINTER;
     201                 : 
     202               0 :     nsCAutoString type;
     203               0 :     nsresult rv = aMIMEInfo->GetMIMEType(type);
     204               0 :     if (NS_FAILED(rv)) return rv;
     205                 : 
     206               0 :     *_retval = mSchemeOrType.Equals(type);
     207                 : 
     208               0 :     return NS_OK;
     209                 : }
     210                 : 
     211                 : NS_IMETHODIMP
     212              12 : nsMIMEInfoBase::SetFileExtensions(const nsACString& aExtensions)
     213                 : {
     214              12 :     mExtensions.Clear();
     215              24 :     nsCString extList( aExtensions );
     216                 :     
     217              12 :     PRInt32 breakLocation = -1;
     218              35 :     while ( (breakLocation= extList.FindChar(',') )!= -1)
     219                 :     {
     220              11 :         mExtensions.AppendElement(Substring(extList.get(), extList.get() + breakLocation));
     221              11 :         extList.Cut(0, breakLocation+1 );
     222                 :     }
     223              12 :     if ( !extList.IsEmpty() )
     224              12 :         mExtensions.AppendElement( extList );
     225              12 :     return NS_OK;
     226                 : }
     227                 : 
     228                 : NS_IMETHODIMP
     229               0 : nsMIMEInfoBase::GetDefaultDescription(nsAString& aDefaultDescription)
     230                 : {
     231               0 :   aDefaultDescription = mDefaultAppDescription;
     232               0 :   return NS_OK;
     233                 : }
     234                 : 
     235                 : NS_IMETHODIMP
     236              50 : nsMIMEInfoBase::GetPreferredApplicationHandler(nsIHandlerApp ** aPreferredAppHandler)
     237                 : {
     238              50 :   *aPreferredAppHandler = mPreferredApplication;
     239              50 :   NS_IF_ADDREF(*aPreferredAppHandler);
     240              50 :   return NS_OK;
     241                 : }
     242                 :  
     243                 : NS_IMETHODIMP
     244              25 : nsMIMEInfoBase::SetPreferredApplicationHandler(nsIHandlerApp * aPreferredAppHandler)
     245                 : {
     246              25 :   mPreferredApplication = aPreferredAppHandler;
     247              25 :   return NS_OK;
     248                 : }
     249                 : 
     250                 : NS_IMETHODIMP
     251              66 : nsMIMEInfoBase::GetPossibleApplicationHandlers(nsIMutableArray ** aPossibleAppHandlers)
     252                 : {
     253              66 :   if (!mPossibleApplications)
     254              40 :     mPossibleApplications = do_CreateInstance(NS_ARRAY_CONTRACTID);
     255                 : 
     256              66 :   if (!mPossibleApplications)
     257               0 :     return NS_ERROR_OUT_OF_MEMORY;
     258                 : 
     259              66 :   *aPossibleAppHandlers = mPossibleApplications;
     260              66 :   NS_IF_ADDREF(*aPossibleAppHandlers);
     261              66 :   return NS_OK;
     262                 : }
     263                 : 
     264                 : NS_IMETHODIMP
     265              36 : nsMIMEInfoBase::GetPreferredAction(nsHandlerInfoAction * aPreferredAction)
     266                 : {
     267              36 :   *aPreferredAction = mPreferredAction;
     268              36 :   return NS_OK;
     269                 : }
     270                 :  
     271                 : NS_IMETHODIMP
     272              86 : nsMIMEInfoBase::SetPreferredAction(nsHandlerInfoAction aPreferredAction)
     273                 : {
     274              86 :   mPreferredAction = aPreferredAction;
     275              86 :   return NS_OK;
     276                 : }
     277                 : 
     278                 : NS_IMETHODIMP
     279              32 : nsMIMEInfoBase::GetAlwaysAskBeforeHandling(bool * aAlwaysAsk)
     280                 : {
     281              32 :   *aAlwaysAsk = mAlwaysAskBeforeHandling;
     282                 : 
     283              32 :   return NS_OK;
     284                 : }
     285                 : 
     286                 : NS_IMETHODIMP
     287              28 : nsMIMEInfoBase::SetAlwaysAskBeforeHandling(bool aAlwaysAsk)
     288                 : {
     289              28 :   mAlwaysAskBeforeHandling = aAlwaysAsk;
     290              28 :   return NS_OK;
     291                 : }
     292                 : 
     293                 : /* static */
     294                 : nsresult 
     295               0 : nsMIMEInfoBase::GetLocalFileFromURI(nsIURI *aURI, nsILocalFile **aFile)
     296                 : {
     297                 :   nsresult rv;
     298                 : 
     299               0 :   nsCOMPtr<nsIFileURL> fileUrl = do_QueryInterface(aURI, &rv);
     300               0 :   if (NS_FAILED(rv)) return rv;
     301                 : 
     302               0 :   nsCOMPtr<nsIFile> file;
     303               0 :   rv = fileUrl->GetFile(getter_AddRefs(file));
     304               0 :   if (NS_FAILED(rv)) return rv;    
     305                 : 
     306               0 :   return CallQueryInterface(file, aFile);
     307                 : }
     308                 : 
     309                 : NS_IMETHODIMP
     310               0 : nsMIMEInfoBase::LaunchWithFile(nsIFile* aFile)
     311                 : {
     312                 :   nsresult rv;
     313                 : 
     314                 :   // it doesn't make any sense to call this on protocol handlers
     315               0 :   NS_ASSERTION(mClass == eMIMEInfo,
     316                 :                "nsMIMEInfoBase should have mClass == eMIMEInfo");
     317                 : 
     318               0 :   if (mPreferredAction == useSystemDefault) {
     319               0 :     return LaunchDefaultWithFile(aFile);
     320                 :   }
     321                 : 
     322               0 :   if (mPreferredAction == useHelperApp) {
     323               0 :     if (!mPreferredApplication)
     324               0 :       return NS_ERROR_FILE_NOT_FOUND;
     325                 : 
     326                 :     // at the moment, we only know how to hand files off to local handlers
     327                 :     nsCOMPtr<nsILocalHandlerApp> localHandler = 
     328               0 :       do_QueryInterface(mPreferredApplication, &rv);
     329               0 :     NS_ENSURE_SUCCESS(rv, rv);
     330                 : 
     331               0 :     nsCOMPtr<nsIFile> executable;
     332               0 :     rv = localHandler->GetExecutable(getter_AddRefs(executable));
     333               0 :     NS_ENSURE_SUCCESS(rv, rv);
     334                 : 
     335               0 :     nsCAutoString path;
     336               0 :     aFile->GetNativePath(path);
     337               0 :     return LaunchWithIProcess(executable, path);
     338                 :   }
     339                 : 
     340               0 :   return NS_ERROR_INVALID_ARG;
     341                 : }
     342                 : 
     343                 : NS_IMETHODIMP
     344               0 : nsMIMEInfoBase::LaunchWithURI(nsIURI* aURI,
     345                 :                               nsIInterfaceRequestor* aWindowContext)
     346                 : {
     347                 :   // for now, this is only being called with protocol handlers; that
     348                 :   // will change once we get to more general registerContentHandler
     349                 :   // support
     350               0 :   NS_ASSERTION(mClass == eProtocolInfo,
     351                 :                "nsMIMEInfoBase should be a protocol handler");
     352                 : 
     353               0 :   if (mPreferredAction == useSystemDefault) {
     354               0 :     return LoadUriInternal(aURI);
     355                 :   }
     356                 : 
     357               0 :   if (mPreferredAction == useHelperApp) {
     358               0 :     if (!mPreferredApplication)
     359               0 :       return NS_ERROR_FILE_NOT_FOUND;
     360                 : 
     361               0 :     return mPreferredApplication->LaunchWithURI(aURI, aWindowContext);
     362                 :   } 
     363                 : 
     364               0 :   return NS_ERROR_INVALID_ARG;
     365                 : }
     366                 : 
     367                 : void
     368               0 : nsMIMEInfoBase::CopyBasicDataTo(nsMIMEInfoBase* aOther)
     369                 : {
     370               0 :   aOther->mSchemeOrType = mSchemeOrType;
     371               0 :   aOther->mDefaultAppDescription = mDefaultAppDescription;
     372               0 :   aOther->mExtensions = mExtensions;
     373               0 : }
     374                 : 
     375                 : /* static */
     376                 : already_AddRefed<nsIProcess>
     377               0 : nsMIMEInfoBase::InitProcess(nsIFile* aApp, nsresult* aResult)
     378                 : {
     379               0 :   NS_ASSERTION(aApp, "Unexpected null pointer, fix caller");
     380                 : 
     381                 :   nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID,
     382               0 :                                                    aResult);
     383               0 :   if (NS_FAILED(*aResult))
     384               0 :     return nsnull;
     385                 : 
     386               0 :   *aResult = process->Init(aApp);
     387               0 :   if (NS_FAILED(*aResult))
     388               0 :     return nsnull;
     389                 : 
     390               0 :   return process.forget();
     391                 : }
     392                 : 
     393                 : /* static */
     394                 : nsresult
     395               0 : nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg)
     396                 : {
     397                 :   nsresult rv;
     398               0 :   nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
     399               0 :   if (NS_FAILED(rv))
     400               0 :     return rv;
     401                 : 
     402               0 :   const char *string = aArg.get();
     403                 : 
     404               0 :   return process->Run(false, &string, 1);
     405                 : }
     406                 : 
     407                 : /* static */
     408                 : nsresult
     409               0 : nsMIMEInfoBase::LaunchWithIProcess(nsIFile* aApp, const nsString& aArg)
     410                 : {
     411                 :   nsresult rv;
     412               0 :   nsCOMPtr<nsIProcess> process = InitProcess(aApp, &rv);
     413               0 :   if (NS_FAILED(rv))
     414               0 :     return rv;
     415                 : 
     416               0 :   const PRUnichar *string = aArg.get();
     417                 : 
     418               0 :   return process->Runw(false, &string, 1);
     419                 : }
     420                 : 
     421                 : // nsMIMEInfoImpl implementation
     422                 : NS_IMETHODIMP
     423               1 : nsMIMEInfoImpl::GetDefaultDescription(nsAString& aDefaultDescription)
     424                 : {
     425               1 :   if (mDefaultAppDescription.IsEmpty() && mDefaultApplication) {
     426                 :     // Don't want to cache this, just in case someone resets the app
     427                 :     // without changing the description....
     428               0 :     mDefaultApplication->GetLeafName(aDefaultDescription);
     429                 :   } else {
     430               1 :     aDefaultDescription = mDefaultAppDescription;
     431                 :   }
     432                 :   
     433               1 :   return NS_OK;
     434                 : }
     435                 : 
     436                 : NS_IMETHODIMP
     437               1 : nsMIMEInfoImpl::GetHasDefaultHandler(bool * _retval)
     438                 : {
     439               1 :   *_retval = !mDefaultAppDescription.IsEmpty();
     440               1 :   if (mDefaultApplication) {
     441                 :     bool exists;
     442               0 :     *_retval = NS_SUCCEEDED(mDefaultApplication->Exists(&exists)) && exists;
     443                 :   }
     444               1 :   return NS_OK;
     445                 : }
     446                 : 
     447                 : nsresult
     448               0 : nsMIMEInfoImpl::LaunchDefaultWithFile(nsIFile* aFile)
     449                 : {
     450               0 :   if (!mDefaultApplication)
     451               0 :     return NS_ERROR_FILE_NOT_FOUND;
     452                 : 
     453               0 :   nsCAutoString nativePath;
     454               0 :   aFile->GetNativePath(nativePath);
     455                 :   
     456               0 :   return LaunchWithIProcess(mDefaultApplication, nativePath);
     457                 : }
     458                 : 
     459                 : NS_IMETHODIMP
     460               0 : nsMIMEInfoBase::GetPossibleLocalHandlers(nsIArray **_retval)
     461                 : {
     462               0 :   return NS_ERROR_NOT_IMPLEMENTED;
     463                 : }

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