Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/xbmc/filesystem/ZipManager.h b/xbmc/filesystem/ZipManager.h
new file mode 100644
index 0000000..3fba27f
--- /dev/null
+++ b/xbmc/filesystem/ZipManager.h
@@ -0,0 +1,82 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+// See http://www.pkware.com/documents/casestudies/APPNOTE.TXT
+#define ZIP_LOCAL_HEADER 0x04034b50
+#define ZIP_DATA_RECORD_HEADER 0x08074b50
+#define ZIP_CENTRAL_HEADER 0x02014b50
+#define ZIP_END_CENTRAL_HEADER 0x06054b50
+#define ZIP_SPLIT_ARCHIVE_HEADER 0x30304b50
+#define LHDR_SIZE 30
+#define DREC_SIZE 16
+#define CHDR_SIZE 46
+#define ECDREC_SIZE 22
+
+#include <cstring>
+#include <map>
+#include <string>
+#include <vector>
+
+class CURL;
+
+static const std::string PATH_TRAVERSAL(R"_((^|\/|\\)\.{2}($|\/|\\))_");
+
+struct SZipEntry {
+  unsigned int header = 0;
+  unsigned short version = 0;
+  unsigned short flags = 0;
+  unsigned short method = 0;
+  unsigned short mod_time = 0;
+  unsigned short mod_date = 0;
+  unsigned int crc32 = 0;
+  unsigned int csize = 0; // compressed size
+  unsigned int usize = 0; // uncompressed size
+  unsigned short flength = 0; // filename length
+  unsigned short elength = 0; // extra field length (local file header)
+  unsigned short eclength = 0; // extra field length (central file header)
+  unsigned short clength = 0; // file comment length (central file header)
+  unsigned int lhdrOffset = 0; // Relative offset of local header
+  int64_t offset = 0;         // offset in file to compressed data
+  char name[255];
+
+  SZipEntry()
+  {
+    name[0] = '\0';
+  }
+};
+
+class CZipManager
+{
+public:
+  CZipManager();
+  ~CZipManager();
+
+  bool GetZipList(const CURL& url, std::vector<SZipEntry>& items);
+  bool GetZipEntry(const CURL& url, SZipEntry& item);
+  bool ExtractArchive(const std::string& strArchive, const std::string& strPath);
+  bool ExtractArchive(const CURL& archive, const std::string& strPath);
+  void release(const std::string& strPath); // release resources used by list zip
+  static void readHeader(const char* buffer, SZipEntry& info);
+  static void readCHeader(const char* buffer, SZipEntry& info);
+private:
+  std::map<std::string,std::vector<SZipEntry> > mZipMap;
+  std::map<std::string,int64_t> mZipDate;
+
+  template<typename T>
+  static T ReadUnaligned(const void* mem)
+  {
+    T var;
+    std::memcpy(&var, mem, sizeof(T));
+    return var;
+  }
+};
+
+extern CZipManager g_ZipManager;
+