The Tor Browser: gfx/ots/src/fpgm.cc@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "fpgm.h"

     7 // fpgm - Font Program

     8 // http://www.microsoft.com/typography/otspec/fpgm.htm

    10 #define TABLE_NAME "fpgm"

    12 namespace ots {

    14 bool ots_fpgm_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {

    15   Buffer table(data, length);

    17   OpenTypeFPGM *fpgm = new OpenTypeFPGM;

    18   file->fpgm = fpgm;

    20   if (length >= 128 * 1024u) {

    21     return OTS_FAILURE_MSG("length (%ld) > 120", length);  // almost all fpgm tables are less than 5k bytes.

    22   }

    24   if (!table.Skip(length)) {

    25     return OTS_FAILURE_MSG("Bad fpgm length");

    26   }

    28   fpgm->data = data;

    29   fpgm->length = length;

    30   return true;

    31 }

    33 bool ots_fpgm_should_serialise(OpenTypeFile *file) {

    34   if (!file->glyf) return false;  // this table is not for CFF fonts.

    35   return g_transcode_hints && file->fpgm;

    36 }

    38 bool ots_fpgm_serialise(OTSStream *out, OpenTypeFile *file) {

    39   const OpenTypeFPGM *fpgm = file->fpgm;

    41   if (!out->Write(fpgm->data, fpgm->length)) {

    42     return OTS_FAILURE_MSG("Failed to write fpgm");

    43   }

    45   return true;

    46 }

    48 void ots_fpgm_free(OpenTypeFile *file) {

    49   delete file->fpgm;

    50 }

    52 }  // namespace ots

The Tor Browser / file revision

gfx/ots/src/fpgm.cc@97036ab72558

gfx/ots/src/fpgm.cc