2 Copyright (C) 2021 David Knapp (Cloudwalk)
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * The VPK format is Valve's package format for Source engine games,
26 * used to store game content.
28 * Game content is spread across multiple VPK files. A single, special
29 * VPK file, ending in _dir.vpk, contains a centralized directory
30 * tree for all of the other files, and has its own header.
31 * Although content can be stored in the directory file.
33 * This is useful for navigating game content without having
34 * to guess which VPK some file belongs to, while also
35 * making game updates more efficient by spreading content
36 * across multiple files, where opening and closing thousands
37 * of loose files to update them is less efficient.
40 const uint32_t VPK_SIGNATURE = 0x55aa1234;
42 typedef struct dvpk_header_v1_s
44 const uint32_t signature; // Should always be VPK_SIGNATURE
45 const uint32_t version; // Should always be 1
47 // Size of directory tree
51 typedef struct dvpk_header_v2_s
53 const uint32_t signature; // Should always be VPK_SIGNATURE
54 const uint32_t version; // Should always be 2
56 // Size of directory tree
60 uint32_t filedata_size;
61 uint32_t archivemd5_size;
62 uint32_t othermd5_size;
63 uint32_t signature_size;
66 typedef struct dvpk_dir_entry_s
69 uint16_t preloadbytes;
71 uint16_t archiveindex;
74 const uint16_t terminator; // Should always be 0xFFFF
77 typedef struct dvpk_archive_md5_entry_s
79 uint32_t archiveindex;
80 uint32_t startingoffset;
83 } dvpk_archive_md5_entry_t;
85 typedef struct dvpk_other_md5_entry_s
88 int8_t archivemd5sum[16];
89 int8_t unknown[16]; // ??
90 } dvpk_other_md5_entry_t;
92 typedef struct dvpk_signature_entry_s
94 uint32_t pubkeysize; // Always 160
96 uint32_t signaturesize; // Always 128
97 int8_t signature[128];
98 } dvpk_signature_entry_t;