1 /* ScummVM Tools
2 *
3 * ScummVM Tools is the legal property of its developers, whose
4 * names are too numerous to list here. Please refer to the
5 * COPYRIGHT file distributed with this source distribution.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 */
21
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include "extract_hdb.h"
26 #include <zlib.h>
27
28
ExtractHDB(const std::string & name)29 ExtractHDB::ExtractHDB(const std::string &name) : Tool(name, TOOLTYPE_EXTRACTION) {
30 ToolInput input;
31 input.format = "*.*";
32 _inputPaths.push_back(input);
33
34 _outputToDirectory = true;
35
36 _shorthelp = "Used to extract Hyperspace Delivery Boy! archive files.";
37 _helptext = "\nUsage: " + getName() + " [-o /path/to/output/dir/] <inputfile>\n";
38
39 _compressed = false;
40 }
41
execute()42 void ExtractHDB::execute() {
43 Common::Filename filename = _inputPaths[0].path;
44
45 if (!openMPC(filename))
46 error("Unable to open %s", filename.getFullName().c_str());
47
48 Common::File fOut;
49 for (Common::Array<MPCEntry *>::iterator it = _dir.begin(); it != _dir.end(); ++it) {
50 byte *buffer = (byte *)malloc((*it)->length);
51
52 _mpcFile.seek((*it)->offset, SEEK_SET);
53
54 _mpcFile.read_noThrow(buffer, (*it)->length);
55
56 _outputPath.setFullName((*it)->filename);
57
58 fOut.open(_outputPath, "wb");
59
60 if (_compressed) {
61 byte *buffer2 = (byte *)calloc((*it)->ulength, 1);
62 unsigned long len = (*it)->ulength;
63
64 print("... decompressing %s", (*it)->filename);
65
66 if (uncompress(buffer2, &len, buffer, (*it)->length) != Z_OK) {
67 print("Error uncompressing file %s", (*it)->filename);
68
69 fOut.write(buffer, (*it)->length);
70 } else if (len != (*it)->ulength) {
71 print("Size mismatch for %s: %d <> %d", (*it)->filename, len, (*it)->ulength);
72
73 fOut.write(buffer, (*it)->length);
74 } else {
75 fOut.write(buffer2, (*it)->ulength);
76 }
77
78 free(buffer2);
79 } else {
80 print("... %s", (*it)->filename);
81 fOut.write(buffer, (*it)->length);
82 }
83
84 fOut.close();
85
86 free(buffer);
87 }
88
89 _mpcFile.close();
90 }
91
inspectInput(const Common::Filename & filename)92 InspectionMatch ExtractHDB::inspectInput(const Common::Filename &filename) {
93 // Accept either 'vol.cat' or 'vol.dat'
94 std::string file = filename.getFullName();
95 if (
96 scumm_stricmp(file.c_str(), "hyperspace.mpc") == 0 ||
97 scumm_stricmp(file.c_str(), "hyperspace.msd") == 0 ||
98 scumm_stricmp(file.c_str(), "hyperdemo.mpc") == 0 ||
99 scumm_stricmp(file.c_str(), "hyperdemo.msd") == 0
100 )
101 return IMATCH_PERFECT;
102 return IMATCH_AWFUL;
103 }
104
openMPC(Common::Filename & filename)105 bool ExtractHDB::openMPC(Common::Filename &filename) {
106 uint32 offset;
107
108 _mpcFile.open(filename, "rb");
109 if (!_mpcFile.isOpen()) {
110 error("FileMan::openMPC(): Error reading the MSD/MPC file %s", filename.getFullName().c_str());
111 return false;
112 }
113
114 _dataHeader.id = _mpcFile.readUint32BE();
115
116 if (_dataHeader.id == 'MPCC') {
117 print("COMPRESSED MPC FILE");
118 return false;
119 } else if (_dataHeader.id == 'MPCU') {
120 print("Unpacking uncompressed MPC file...");
121 // we're fine
122 } else if (_dataHeader.id == 'MSDC') {
123 print("Unpacking compressed MSD file...");
124 _compressed = true;
125 // we're fine
126 } else if (_dataHeader.id == 'MSDU') {
127 print("UNCOMPRESSED MSD FILE");
128 return false;
129 } else {
130 error("Invalid MPC/MSD File.");
131 return false;
132 }
133
134 // read the directory
135 offset = _mpcFile.readUint32LE();
136 _mpcFile.seek((int32)offset, SEEK_SET);
137
138 // Note: The MPC archive format assumes the offset to be uint32,
139 // but Common::File::seek() takes the offset as int32.
140
141 _dataHeader.dirSize = _mpcFile.readUint32LE();
142
143 print("MPCU: Read %d entries", _dataHeader.dirSize);
144
145 for (uint32 fileIndex = 0; fileIndex < _dataHeader.dirSize; fileIndex++) {
146 MPCEntry *dirEntry = new MPCEntry();
147
148 for (int i = 0; i < 64; i++) {
149 dirEntry->filename[i] = _mpcFile.readByte();
150 }
151
152 dirEntry->offset = _mpcFile.readUint32LE();
153 dirEntry->length = _mpcFile.readUint32LE();
154 dirEntry->ulength = _mpcFile.readUint32LE();
155 dirEntry->type = (DataType)_mpcFile.readUint32LE();
156
157 _dir.push_back(dirEntry);
158 }
159
160 return true;
161 }
162
163 #ifdef STANDALONE_MAIN
main(int argc,char * argv[])164 int main(int argc, char *argv[]) {
165 ExtractHDB hdb(argv[0]);
166 return hdb.run(argc, argv);
167 }
168 #endif
169