modules/plugin/base/src/nsPluginsDirOS2.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is the Mozilla OS/2 libraries.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * John Fairhurst, <john_fairhurst@iname.com>.
  18  * Portions created by the Initial Developer are Copyright (C) 1998
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *
  23  * Alternatively, the contents of this file may be used under the terms of
  24  * either the GNU General Public License Version 2 or later (the "GPL"), or
  25  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  26  * in which case the provisions of the GPL or the LGPL are applicable instead
  27  * of those above. If you wish to allow use of your version of this file only
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  32  * the provisions above, a recipient may use your version of this file under
  33  * the terms of any one of the MPL, the GPL or the LGPL.
  34  *
  35  * ***** END LICENSE BLOCK ***** */
  36
  37 // OS/2 plugin-loading code.
  38
  39 #define INCL_DOS
  40 #define INCL_DOSERRORS
  41 #include <os2.h>
  42
  43 #include "nsPluginsDir.h"
  44 #include "prlink.h"
  45 #include "plstr.h"
  46 #include "prmem.h"
  47 #include "prprf.h"
  48 #include "nsPluginDefs.h"
  49
  50 #include "nsString.h"
  51
  52 /* Load a string stored as RCDATA in a resource segment */
  53 /* Returned string needs to be PR_Free'd by caller */
  54 static char *LoadRCDATAString( HMODULE hMod, ULONG resid)
  55 {
  56    APIRET rc;
  57    ULONG  ulSize = 0;
  58    char  *string = 0;
  59
  60    rc = DosQueryResourceSize( hMod, RT_RCDATA, resid, &ulSize);
  61
  62    if( rc == NO_ERROR)
  63    {
  64       char *readOnlyString = 0;
  65       rc = DosGetResource( hMod, RT_RCDATA, resid, (void**) &readOnlyString);
  66
  67       /* allow for 0-termination if user hasn't got it right */
  68       if( readOnlyString[ ulSize - 1] != '\0')
  69          ulSize++;
  70
  71       if( rc == NO_ERROR)
  72       {
  73          /* copy string & zero-terminate */
  74          string = (char*) PR_Malloc( ulSize);
  75          memcpy( string, readOnlyString, ulSize - 1);
  76          string[ ulSize - 1] = '\0';
  77
  78          DosFreeResource( readOnlyString);
  79       }
  80    }
  81
  82    return string;
  83 }
  84
  85 /* Load a version string stored as RCDATA in a resource segment */
  86 /* Returned string needs to be PR_Free'd by caller */
  87 static char *LoadRCDATAVersion(HMODULE hMod, ULONG resid)
  88 {
  89    APIRET rc;
  90    ULONG  ulSize = 0;
  91    char  *string = 0;
  92
  93    rc = DosQueryResourceSize(hMod, RT_RCDATA, resid, &ulSize);
  94
  95    // version info is should be 8 chars
  96    if (rc == NO_ERROR && ulSize == 8)
  97    {
  98       char *version = NULL;
  99       rc = DosGetResource(hMod, RT_RCDATA, resid, (void**) &version);
 100
 101       if (rc == NO_ERROR)
 102       {
 103          string = PR_smprintf("%d.%d.%d.%d\n",
 104                               version[0], version[2], version[4], version[6]);
 105
 106          DosFreeResource(version);
 107       }
 108    }
 109
 110    return string;
 111 }
 112
 113 static PRUint32 CalculateVariantCount(char* mimeTypes)
 114 {
 115   PRUint32 variants = 1;
 116
 117   if(mimeTypes == nsnull)
 118     return 0;
 119
 120   char* index = mimeTypes;
 121   while (*index)
 122   {
 123     if (*index == '|')
 124     variants++;
 125
 126     ++index;
 127   }
 128   return variants;
 129 }
 130
 131 static char** MakeStringArray(PRUint32 variants, char* data)
 132 {
 133   if((variants <= 0) || (data == nsnull))
 134     return nsnull;
 135
 136   char ** array = (char **)PR_Calloc(variants, sizeof(char *));
 137   if(array == nsnull)
 138     return nsnull;
 139
 140   char * start = data;
 141   for(PRUint32 i = 0; i < variants; i++)
 142   {
 143     char * p = PL_strchr(start, '|');
 144     if(p != nsnull)
 145       *p = 0;
 146
 147     array[i] = PL_strdup(start);
 148     start = ++p;
 149   }
 150   return array;
 151 }
 152
 153 static void FreeStringArray(PRUint32 variants, char ** array)
 154 {
 155   if((variants == 0) || (array == nsnull))
 156     return;
 157
 158   for(PRUint32 i = 0; i < variants; i++)
 159   {
 160     if(array[i] != nsnull)
 161     {
 162       PL_strfree(array[i]);
 163       array[i] = nsnull;
 164     }
 165   }
 166   PR_Free(array);
 167 }
 168
 169 // nsPluginsDir class
 170
 171 PRBool nsPluginsDir::IsPluginFile(nsIFile* file)
 172 {
 173     nsCAutoString leaf;
 174     if (NS_FAILED(file->GetNativeLeafName(leaf)))
 175         return PR_FALSE;
 176
 177     const char *leafname = leaf.get();
 178
 179     if( nsnull != leafname)
 180     {
 181       int len = strlen( leafname);
 182       if( len > 6 &&                 // np*.dll
 183           (0 == strnicmp( &(leafname[len - 4]), ".dll", 4)) &&
 184           (0 == strnicmp( leafname, "np", 2)))
 185       {
 186         return PR_TRUE;
 187       }
 188     }
 189     return PR_FALSE;
 190 }
 191
 192 // nsPluginFile implementation
 193
 194 nsPluginFile::nsPluginFile(nsIFile* file)
 195 : mPlugin(file)
 196 {}
 197
 198 nsPluginFile::~nsPluginFile()
 199 {}
 200
 201 // Loads the plugin into memory using NSPR's shared-library loading
 202 nsresult nsPluginFile::LoadPlugin( PRLibrary *&outLibrary)
 203 {
 204     if (!mPlugin)
 205       return NS_ERROR_NULL_POINTER;
 206
 207     nsCAutoString temp;
 208     mPlugin->GetNativePath(temp);
 209
 210     outLibrary = PR_LoadLibrary(temp.get());
 211     return outLibrary == nsnull ? NS_ERROR_FAILURE : NS_OK;
 212 }
 213
 214 // Obtains all of the information currently available for this plugin.
 215 nsresult nsPluginFile::GetPluginInfo( nsPluginInfo &info)
 216 {
 217    nsresult   rc = NS_ERROR_FAILURE;
 218    HMODULE    hPlug = 0; // Need a HMODULE to query resource statements
 219    char       failure[ CCHMAXPATH] = "";
 220    APIRET     ret;
 221
 222    const char* path;
 223    nsCAutoString temp;
 224    mPlugin->GetNativePath(temp);
 225    path = temp.get();
 226    ret = DosLoadModule( failure, CCHMAXPATH, path, &hPlug);
 227    info.fVersion = nsnull;
 228
 229    while( ret == NO_ERROR)
 230    {
 231       info.fName = LoadRCDATAString( hPlug, NS_INFO_ProductName);
 232
 233       info.fVersion = LoadRCDATAVersion( hPlug, NS_INFO_ProductVersion);
 234
 235       // get description (doesn't matter if it's missing)...
 236       info.fDescription = LoadRCDATAString( hPlug, NS_INFO_FileDescription);
 237
 238       char * mimeType = LoadRCDATAString( hPlug, NS_INFO_MIMEType);
 239       if( nsnull == mimeType) break;
 240
 241       char * mimeDescription = LoadRCDATAString( hPlug, NS_INFO_FileOpenName);
 242       if( nsnull == mimeDescription) break;
 243
 244       char * extensions = LoadRCDATAString( hPlug, NS_INFO_FileExtents);
 245       if( nsnull == extensions) break;
 246
 247       info.fVariantCount = CalculateVariantCount(mimeType);
 248
 249       info.fMimeTypeArray = MakeStringArray(info.fVariantCount, mimeType);
 250       if( info.fMimeTypeArray == nsnull) break;
 251
 252       info.fMimeDescriptionArray = MakeStringArray(info.fVariantCount, mimeDescription);
 253       if( nsnull == info.fMimeDescriptionArray) break;
 254
 255       info.fExtensionArray = MakeStringArray(info.fVariantCount, extensions);
 256       if( nsnull == info.fExtensionArray) break;
 257
 258       info.fFileName = PL_strdup(path);
 259
 260       rc = NS_OK;
 261       break;
 262    }
 263
 264    if( 0 != hPlug)
 265       DosFreeModule( hPlug);
 266
 267    return rc;
 268 }
 269
 270 nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
 271 {
 272    if(info.fName != nsnull)
 273      PL_strfree(info.fName);
 274
 275    if(info.fFileName != nsnull)
 276      PL_strfree(info.fFileName);
 277
 278    if(info.fVersion != nsnull)
 279      PL_strfree(info.fVersion);
 280
 281    if(info.fDescription != nsnull)
 282      PL_strfree(info.fDescription);
 283
 284    if(info.fMimeTypeArray != nsnull)
 285      FreeStringArray(info.fVariantCount, info.fMimeTypeArray);
 286
 287    if(info.fMimeDescriptionArray != nsnull)
 288      FreeStringArray(info.fVariantCount, info.fMimeDescriptionArray);
 289
 290    if(info.fExtensionArray != nsnull)
 291      FreeStringArray(info.fVariantCount, info.fExtensionArray);
 292
 293    memset((void *)&info, 0, sizeof(info));
 294
 295    return NS_OK;
 296 }