The Tor Browser: gfx/skia/trunk/src/pdf/SkPDFCatalog.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFCatalog.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFCatalog.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkPDFCatalog.h"
 #include "SkPDFTypes.h"
 #include "SkStream.h"
 #include "SkTypes.h"
 SkPDFCatalog::SkPDFCatalog(SkPDFDocument::Flags flags)
     : fFirstPageCount(0),
       fNextObjNum(1),
       fNextFirstPageObjNum(0),
       fDocumentFlags(flags) {
 }
 SkPDFCatalog::~SkPDFCatalog() {
     fSubstituteResourcesRemaining.safeUnrefAll();
     fSubstituteResourcesFirstPage.safeUnrefAll();
 }
 SkPDFObject* SkPDFCatalog::addObject(SkPDFObject* obj, bool onFirstPage) {
     if (findObjectIndex(obj) != -1) {  // object already added
         return obj;
     }
     SkASSERT(fNextFirstPageObjNum == 0);
     if (onFirstPage) {
         fFirstPageCount++;
     }
     struct Rec newEntry(obj, onFirstPage);
     fCatalog.append(1, &newEntry);
     return obj;
 }
 size_t SkPDFCatalog::setFileOffset(SkPDFObject* obj, off_t offset) {
     int objIndex = assignObjNum(obj) - 1;
     SkASSERT(fCatalog[objIndex].fObjNumAssigned);
     SkASSERT(fCatalog[objIndex].fFileOffset == 0);
     fCatalog[objIndex].fFileOffset = offset;
     return getSubstituteObject(obj)->getOutputSize(this, true);
 }
 void SkPDFCatalog::emitObjectNumber(SkWStream* stream, SkPDFObject* obj) {
     stream->writeDecAsText(assignObjNum(obj));
     stream->writeText(" 0");  // Generation number is always 0.
 }
 size_t SkPDFCatalog::getObjectNumberSize(SkPDFObject* obj) {
     SkDynamicMemoryWStream buffer;
     emitObjectNumber(&buffer, obj);
     return buffer.getOffset();
 }
 int SkPDFCatalog::findObjectIndex(SkPDFObject* obj) const {
     for (int i = 0; i < fCatalog.count(); i++) {
         if (fCatalog[i].fObject == obj) {
             return i;
         }
     }
     // If it's not in the main array, check if it's a substitute object.
     for (int i = 0; i < fSubstituteMap.count(); ++i) {
         if (fSubstituteMap[i].fSubstitute == obj) {
             return findObjectIndex(fSubstituteMap[i].fOriginal);
         }
     }
     return -1;
 }
 int SkPDFCatalog::assignObjNum(SkPDFObject* obj) {
     int pos = findObjectIndex(obj);
     // If this assert fails, it means you probably forgot to add an object
     // to the resource list.
     SkASSERT(pos >= 0);
     uint32_t currentIndex = pos;
     if (fCatalog[currentIndex].fObjNumAssigned) {
         return currentIndex + 1;
     }
     // First assignment.
     if (fNextFirstPageObjNum == 0) {
         fNextFirstPageObjNum = fCatalog.count() - fFirstPageCount + 1;
     }
     uint32_t objNum;
     if (fCatalog[currentIndex].fOnFirstPage) {
         objNum = fNextFirstPageObjNum;
         fNextFirstPageObjNum++;
     } else {
         objNum = fNextObjNum;
         fNextObjNum++;
     }
     // When we assign an object an object number, we put it in that array
     // offset (minus 1 because object number 0 is reserved).
     SkASSERT(!fCatalog[objNum - 1].fObjNumAssigned);
     if (objNum - 1 != currentIndex) {
         SkTSwap(fCatalog[objNum - 1], fCatalog[currentIndex]);
     }
     fCatalog[objNum - 1].fObjNumAssigned = true;
     return objNum;
 }
 int32_t SkPDFCatalog::emitXrefTable(SkWStream* stream, bool firstPage) {
     int first = -1;
     int last = fCatalog.count() - 1;
     // TODO(vandebo): Support linearized format.
     // int last = fCatalog.count() - fFirstPageCount - 1;
     // if (firstPage) {
     //     first = fCatalog.count() - fFirstPageCount;
     //     last = fCatalog.count() - 1;
     // }
     stream->writeText("xref\n");
     stream->writeDecAsText(first + 1);
     stream->writeText(" ");
     stream->writeDecAsText(last - first + 1);
     stream->writeText("\n");
     if (first == -1) {
         stream->writeText("0000000000 65535 f \n");
         first++;
     }
     for (int i = first; i <= last; i++) {
         // For 32 bits platforms, the maximum offset has to fit within off_t
         // which is a 32 bits signed integer on these platforms.
         SkDEBUGCODE(static const off_t kMaxOff = SK_MaxS32;)
         SkASSERT(fCatalog[i].fFileOffset > 0);
         SkASSERT(fCatalog[i].fFileOffset < kMaxOff);
         stream->writeBigDecAsText(fCatalog[i].fFileOffset, 10);
         stream->writeText(" 00000 n \n");
     }
     return fCatalog.count() + 1;
 }
 void SkPDFCatalog::setSubstitute(SkPDFObject* original,
                                  SkPDFObject* substitute) {
 #if defined(SK_DEBUG)
     // Sanity check: is the original already in substitute list?
     for (int i = 0; i < fSubstituteMap.count(); ++i) {
         if (original == fSubstituteMap[i].fSubstitute ||
             original == fSubstituteMap[i].fOriginal) {
             SkASSERT(false);
             return;
         }
     }
 #endif
     // Check if the original is on first page.
     bool onFirstPage = false;
     for (int i = 0; i < fCatalog.count(); ++i) {
         if (fCatalog[i].fObject == original) {
             onFirstPage = fCatalog[i].fOnFirstPage;
             break;
         }
 #if defined(SK_DEBUG)
         if (i == fCatalog.count() - 1) {
             SkASSERT(false);  // original not in catalog
             return;
         }
 #endif
     }
     SubstituteMapping newMapping(original, substitute);
     fSubstituteMap.append(1, &newMapping);
     // Add resource objects of substitute object to catalog.
     SkTSet<SkPDFObject*>* targetSet = getSubstituteList(onFirstPage);
     SkTSet<SkPDFObject*> newResourceObjects;
     newMapping.fSubstitute->getResources(*targetSet, &newResourceObjects);
     for (int i = 0; i < newResourceObjects.count(); ++i) {
         addObject(newResourceObjects[i], onFirstPage);
     }
     // mergeInto returns the number of duplicates.
     // If there are duplicates, there is a bug and we mess ref counting.
     SkDEBUGCODE(int duplicates =) targetSet->mergeInto(newResourceObjects);
     SkASSERT(duplicates == 0);
 }
 SkPDFObject* SkPDFCatalog::getSubstituteObject(SkPDFObject* object) {
     for (int i = 0; i < fSubstituteMap.count(); ++i) {
         if (object == fSubstituteMap[i].fOriginal) {
             return fSubstituteMap[i].fSubstitute;
         }
     }
     return object;
 }
 off_t SkPDFCatalog::setSubstituteResourcesOffsets(off_t fileOffset,
                                                   bool firstPage) {
     SkTSet<SkPDFObject*>* targetSet = getSubstituteList(firstPage);
     off_t offsetSum = fileOffset;
     for (int i = 0; i < targetSet->count(); ++i) {
         offsetSum += setFileOffset((*targetSet)[i], offsetSum);
     }
     return offsetSum - fileOffset;
 }
 void SkPDFCatalog::emitSubstituteResources(SkWStream *stream, bool firstPage) {
     SkTSet<SkPDFObject*>* targetSet = getSubstituteList(firstPage);
     for (int i = 0; i < targetSet->count(); ++i) {
         (*targetSet)[i]->emit(stream, this, true);
     }
 }
 SkTSet<SkPDFObject*>* SkPDFCatalog::getSubstituteList(bool firstPage) {
     return firstPage ? &fSubstituteResourcesFirstPage :
                        &fSubstituteResourcesRemaining;
 }

The Tor Browser / annotate

gfx/skia/trunk/src/pdf/SkPDFCatalog.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/pdf/SkPDFCatalog.cpp