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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef nsPluginsDirUtils_h___
       7             : #define nsPluginsDirUtils_h___
       8             : 
       9             : #include "nsPluginsDir.h"
      10             : #include "nsTArray.h"
      11             : 
      12             : ///////////////////////////////////////////////////////////////////////////////
      13             : // Output format from NPP_GetMIMEDescription: "...mime type[;version]:[extension]:[desecription];..."
      14             : // The ambiguity of mime description could cause the browser fail to parse the MIME types
      15             : // correctly.
      16             : // E.g. "mime type::desecription;" // correct w/o ext
      17             : //      "mime type:desecription;"  // wrong w/o ext
      18             : //
      19             : static nsresult
      20           0 : ParsePluginMimeDescription(const char *mdesc, nsPluginInfo &info)
      21             : {
      22           0 :     nsresult rv = NS_ERROR_FAILURE;
      23           0 :     if (!mdesc || !*mdesc)
      24           0 :        return rv;
      25             : 
      26           0 :     char *mdescDup = PL_strdup(mdesc); // make a dup of intput string we'll change it content
      27           0 :     char anEmptyString[] = "";
      28           0 :     AutoTArray<char*, 8> tmpMimeTypeArr;
      29           0 :     char delimiters[] = {':',':',';'};
      30           0 :     int mimeTypeVariantCount = 0;
      31           0 :     char *p = mdescDup; // make a dup of intput string we'll change it content
      32           0 :     while(p) {
      33           0 :         char *ptrMimeArray[] = {anEmptyString, anEmptyString, anEmptyString};
      34             : 
      35             :         // It's easy to point out ptrMimeArray[0] to the string sounds like
      36             :         // "Mime type is not specified, plugin will not function properly."
      37             :         // and show this on "about:plugins" page, but we have to mark this particular
      38             :         // mime type of given plugin as disable on "about:plugins" page,
      39             :         // which feature is not implemented yet.
      40             :         // So we'll ignore, without any warnings, an empty description strings,
      41             :         // in other words, if after parsing ptrMimeArray[0] == anEmptyString is true.
      42             :         // It is possible do not to registry a plugin at all if it returns
      43             :         // an empty string on GetMIMEDescription() call,
      44             :         // e.g. plugger returns "" if pluggerrc file is not found.
      45             : 
      46           0 :         char *s = p;
      47             :         int i;
      48           0 :         for (i = 0; i < (int) sizeof(delimiters) && (p = PL_strchr(s, delimiters[i])); i++) {
      49           0 :             ptrMimeArray[i] = s; // save start ptr
      50           0 :             *p++ = 0; // overwrite delimiter
      51           0 :             s = p; // move forward
      52             :         }
      53           0 :         if (i == 2)
      54           0 :            ptrMimeArray[i] = s;
      55             :         // fill out the temp array
      56             :         // the order is important, it should be the same in for loop below
      57           0 :         if (ptrMimeArray[0] != anEmptyString) {
      58           0 :             tmpMimeTypeArr.AppendElement(ptrMimeArray[0]);
      59           0 :             tmpMimeTypeArr.AppendElement(ptrMimeArray[1]);
      60           0 :             tmpMimeTypeArr.AppendElement(ptrMimeArray[2]);
      61           0 :             mimeTypeVariantCount++;
      62             :         }
      63             :     }
      64             : 
      65             :     // fill out info structure
      66           0 :     if (mimeTypeVariantCount) {
      67           0 :         info.fVariantCount         = mimeTypeVariantCount;
      68             :         // we can do these 3 mallocs at once, later on code cleanup
      69           0 :         info.fMimeTypeArray        = (char**) malloc(mimeTypeVariantCount * sizeof(char*));
      70           0 :         info.fMimeDescriptionArray = (char**) malloc(mimeTypeVariantCount * sizeof(char*));
      71           0 :         info.fExtensionArray       = (char**) malloc(mimeTypeVariantCount * sizeof(char*));
      72             : 
      73             :         int j,i;
      74           0 :         for (j = i = 0; i < mimeTypeVariantCount; i++) {
      75             :             // the order is important, do not change it
      76             :            // we can get rid of PL_strdup here, later on code cleanup
      77           0 :             info.fMimeTypeArray[i]        =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
      78           0 :             info.fExtensionArray[i]       =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
      79           0 :             info.fMimeDescriptionArray[i] =  PL_strdup(tmpMimeTypeArr.ElementAt(j++));
      80             :         }
      81           0 :         rv = NS_OK;
      82             :     }
      83           0 :     if (mdescDup)
      84           0 :         PL_strfree(mdescDup);
      85           0 :     return rv;
      86             : }
      87             : 
      88             : #endif /* nsPluginsDirUtils_h___ */