VeraCrypt
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path: root/src/Common/libzip/zip_fopen.c
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/*
  zip_fopen.c -- open file in zip archive for reading
  Copyright (C) 1999-2014 Dieter Baron and Thomas Klausner

  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  3. The names of the authors may not be used to endorse or promote
     products derived from this software without specific prior
     written permission.

  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#include "zipint.h"


ZIP_EXTERN zip_file_t *
zip_fopen(zip_t *za, const char *fname, zip_flags_t flags) {
    zip_int64_t idx;

    if ((idx = zip_name_locate(za, fname, flags)) < 0)
	return NULL;

    return zip_fopen_index_encrypted(za, (zip_uint64_t)idx, flags, za->default_password);
}
ass="cm"> Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2015 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #include "Platform/Serializer.h" #include "Common/SecurityToken.h" #include "Crc32.h" #include "Keyfile.h" #include "VolumeException.h" namespace VeraCrypt { void Keyfile::Apply (const BufferPtr &pool) const { if (Path.IsDirectory()) throw ParameterIncorrect (SRC_POS); File file; Crc32 crc32; size_t poolPos = 0; uint64 totalLength = 0; uint64 readLength; SecureBuffer keyfileBuf (File::GetOptimalReadSize()); if (SecurityToken::IsKeyfilePathValid (Path)) { // Apply keyfile generated by a security token vector <byte> keyfileData; SecurityToken::GetKeyfileData (SecurityTokenKeyfile (wstring (Path)), keyfileData); if (keyfileData.size() < MinProcessedLength) throw InsufficientData (SRC_POS, Path); for (size_t i = 0; i < keyfileData.size(); i++) { uint32 crc = crc32.Process (keyfileData[i]); pool[poolPos++] += (byte) (crc >> 24); pool[poolPos++] += (byte) (crc >> 16); pool[poolPos++] += (byte) (crc >> 8); pool[poolPos++] += (byte) crc; if (poolPos >= pool.Size()) poolPos = 0; if (++totalLength >= MaxProcessedLength) break; } Memory::Erase (&keyfileData.front(), keyfileData.size()); goto done; } file.Open (Path, File::OpenRead, File::ShareRead); while ((readLength = file.Read (keyfileBuf)) > 0) { for (size_t i = 0; i < readLength; i++) { uint32 crc = crc32.Process (keyfileBuf[i]); pool[poolPos++] += (byte) (crc >> 24); pool[poolPos++] += (byte) (crc >> 16); pool[poolPos++] += (byte) (crc >> 8); pool[poolPos++] += (byte) crc; if (poolPos >= pool.Size()) poolPos = 0; if (++totalLength >= MaxProcessedLength) goto done; } } done: if (totalLength < MinProcessedLength) throw InsufficientData (SRC_POS, Path); } shared_ptr <VolumePassword> Keyfile::ApplyListToPassword (shared_ptr <KeyfileList> keyfiles, shared_ptr <VolumePassword> password) { if (!password) password.reset (new VolumePassword); if (!keyfiles || keyfiles->size() < 1) return password; KeyfileList keyfilesExp; HiddenFileWasPresentInKeyfilePath = false; // Enumerate directories foreach (shared_ptr <Keyfile> keyfile, *keyfiles) { if (FilesystemPath (*keyfile).IsDirectory()) { size_t keyfileCount = 0; foreach_ref (const FilePath &path, Directory::GetFilePaths (*keyfile)) { #ifdef TC_UNIX // Skip hidden files if (wstring (path.ToBaseName()).find (L'.') == 0) { HiddenFileWasPresentInKeyfilePath = true; continue; } #endif keyfilesExp.push_back (make_shared <Keyfile> (path)); ++keyfileCount; } if (keyfileCount == 0) throw KeyfilePathEmpty (SRC_POS, FilesystemPath (*keyfile)); } else { keyfilesExp.push_back (keyfile); } } make_shared_auto (VolumePassword, newPassword); if (keyfilesExp.size() < 1) { newPassword->Set (*password); } else { SecureBuffer keyfilePool (VolumePassword::MaxSize); // Pad password with zeros if shorter than max length keyfilePool.Zero(); keyfilePool.CopyFrom (ConstBufferPtr (password->DataPtr(), password->Size())); // Apply all keyfiles foreach_ref (const Keyfile &k, keyfilesExp) { k.Apply (keyfilePool); } newPassword->Set (keyfilePool); } return newPassword; } shared_ptr <KeyfileList> Keyfile::DeserializeList (shared_ptr <Stream> stream, const string &name) { shared_ptr <KeyfileList> keyfiles; Serializer sr (stream); if (!sr.DeserializeBool (name + "Null")) { keyfiles.reset (new KeyfileList); foreach (const wstring &k, sr.DeserializeWStringList (name)) keyfiles->push_back (make_shared <Keyfile> (k)); } return keyfiles; } void Keyfile::SerializeList (shared_ptr <Stream> stream, const string &name, shared_ptr <KeyfileList> keyfiles) { Serializer sr (stream); sr.Serialize (name + "Null", keyfiles == nullptr); if (keyfiles) { list <wstring> sl; foreach_ref (const Keyfile &k, *keyfiles) sl.push_back (FilesystemPath (k)); sr.Serialize (name, sl); } } bool Keyfile::HiddenFileWasPresentInKeyfilePath = false; }