/* ResArchive::readDirectory
* Reads a res directory from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool ResArchive::readDirectory(MemChunk& mc, size_t dir_offset, size_t num_lumps, ArchiveTreeNode* parent)
{
if (!parent)
{
LOG_MESSAGE(1, "ReadDir: No parent node");
Global::error = "Archive is invalid and/or corrupt";
return false;
}
mc.seek(dir_offset, SEEK_SET);
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
UI::setSplashProgress(((float)d / (float)num_lumps));
// Read lump info
char magic[4] = "";
char name[15] = "";
uint32_t dumzero1, dumzero2;
uint16_t dumff, dumze;
uint8_t flags = 0;
uint32_t offset = 0;
uint32_t size = 0;
mc.read(magic, 4); // ReS\0
mc.read(name, 14); // Name
mc.read(&offset, 4); // Offset
mc.read(&size, 4); // Size
// Check the identifier
if (magic[0] != 'R' || magic[1] != 'e' || magic[2] != 'S' || magic[3] != 0)
{
LOG_MESSAGE(1, "ResArchive::readDir: Entry %s (%i@0x%x) has invalid directory entry", name, size, offset);
Global::error = "Archive is invalid and/or corrupt";
return false;
}
// Byteswap values for big endian if needed
offset = wxINT32_SWAP_ON_BE(offset);
size = wxINT32_SWAP_ON_BE(size);
name[14] = '\0';
mc.read(&dumze, 2); if (dumze) LOG_MESSAGE(1, "Flag guard not null for entry %s", name);
mc.read(&flags, 1); if (flags != 1 && flags != 17) LOG_MESSAGE(1, "Unknown flag value for entry %s", name);
mc.read(&dumzero1, 4); if (dumzero1) LOG_MESSAGE(1, "Near-end values not set to zero for entry %s", name);
mc.read(&dumff, 2); if (dumff != 0xFFFF) LOG_MESSAGE(1, "Dummy set to a non-FF value for entry %s", name);
mc.read(&dumzero2, 4); if (dumzero2) LOG_MESSAGE(1, "Trailing values not set to zero for entry %s", name);
// If the lump data goes past the end of the file,
// the resfile is invalid
if (offset + size > mc.getSize())
{
LOG_MESSAGE(1, "ResArchive::readDirectory: Res archive is invalid or corrupt, offset overflow");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
// Read entry data if it isn't zero-sized
if (nlump->getSize() > 0)
{
// Read the entry data
MemChunk edata;
mc.exportMemChunk(edata, offset, size);
nlump->importMemChunk(edata);
}
// What if the entry is a directory?
size_t d_o, n_l;
if (isResArchive(nlump->getMCData(), d_o, n_l))
{
ArchiveTreeNode* ndir = createDir(name, parent);
if (ndir)
{
UI::setSplashProgressMessage(S_FMT("Reading res archive data: %s directory", name));
// Save offset to restore it once the recursion is done
size_t myoffset = mc.currentPos();
readDirectory(mc, d_o, n_l, ndir);
ndir->getDirEntry()->setState(0);
// Restore offset and clean out the entry
mc.seek(myoffset, SEEK_SET);
delete nlump;
}
else
{
delete nlump;
return false;
}
// Not a directory, then add to entry list
}
else
{
parent->addEntry(nlump);
// Detect entry type
EntryType::detectEntryType(nlump);
// Unload entry data if needed
if (!archive_load_data)
nlump->unloadData();
// Set entry to unchanged
nlump->setState(0);
}
}
return true;
}
/* RffArchive::open
* Reads grp format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool RffArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read grp header
uint8_t magic[4];
uint32_t version, dir_offset, num_lumps;
mc.seek(0, SEEK_SET);
mc.read(magic, 4); // Should be "RFF\x18"
mc.read(&version, 4); // 0x01 0x03 \x00 \x00
mc.read(&dir_offset, 4); // Offset to directory
mc.read(&num_lumps, 4); // No. of lumps in rff
// Byteswap values for big endian if needed
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
version = wxINT32_SWAP_ON_BE(version);
// Check the header
if (magic[0] != 'R' || magic[1] != 'F' || magic[2] != 'F' || magic[3] != 0x1A || version != 0x301)
{
wxLogMessage("RffArchive::openFile: File %s has invalid header", filename);
Global::error = "Invalid rff header";
return false;
}
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
RFFLump* lumps = new RFFLump[num_lumps];
mc.seek(dir_offset, SEEK_SET);
theSplashWindow->setProgressMessage("Reading rff archive data");
mc.read (lumps, num_lumps * sizeof(RFFLump));
BloodCrypt (lumps, dir_offset, num_lumps * sizeof(RFFLump));
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_lumps));
// Read lump info
char name[13] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint32_t offset = wxINT32_SWAP_ON_BE(lumps[d].FilePos);
uint32_t size = wxINT32_SWAP_ON_BE(lumps[d].Size);
// Reconstruct name
int i, j = 0;
for (i = 0; i < 8; ++i)
{
if (lumps[d].Name[i] == 0) break;
name[i] = lumps[d].Name[i];
}
for (name[i++] = '.'; j < 3; ++j)
name[i+j] = lumps[d].Extension[j];
// If the lump data goes past the end of the file,
// the rfffile is invalid
if (offset + size > mc.getSize())
{
wxLogMessage("RffArchive::open: rff archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
// Is the entry encrypted?
if (lumps[d].Flags & 0x10)
nlump->setEncryption(ENC_BLOOD);
// Add to entry list
getRoot()->addEntry(nlump);
}
delete[] lumps;
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_lumps)));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->getSize());
// If the entry is encrypted, decrypt it
if (entry->isEncrypted())
{
uint8_t* cdata = new uint8_t[entry->getSize()];
memcpy(cdata, edata.getData(), entry->getSize());
int cryptlen = entry->getSize() < 256 ? entry->getSize() : 256;
BloodCrypt(cdata, 0, cryptlen);
edata.importMem(cdata, entry->getSize());
delete[] cdata;
}
// Import data
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Detect maps (will detect map entry types)
//theSplashWindow->setProgressMessage("Detecting maps");
//detectMaps();
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* ADatArchive::open
* Reads dat format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool ADatArchive::open(MemChunk& mc) {
// Check given data is valid
if (mc.getSize() < 16)
return false;
// Read dat header
char magic[4];
long dir_offset;
long dir_size;
mc.seek(0, SEEK_SET);
mc.read(magic, 4);
mc.read(&dir_offset, 4);
mc.read(&dir_size, 4);
// Check it
if (magic[0] != 'A' || magic[1] != 'D' || magic[2] != 'A' || magic[3] != 'T') {
wxLogMessage("ADatArchive::open: Opening failed, invalid header");
Global::error = "Invalid dat header";
return false;
}
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
size_t num_entries = dir_size / DIRENTRY;
mc.seek(dir_offset, SEEK_SET);
theSplashWindow->setProgressMessage("Reading dat archive data");
for (uint32_t d = 0; d < num_entries; d++) {
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_entries));
// Read entry info
char name[128];
long offset;
long decsize;
long compsize;
long whatever; // No idea what this could be
mc.read(name, 128);
mc.read(&offset, 4);
mc.read(&decsize, 4);
mc.read(&compsize, 4);
mc.read(&whatever, 4);
// Byteswap if needed
offset = wxINT32_SWAP_ON_BE(offset);
decsize = wxINT32_SWAP_ON_BE(decsize);
compsize = wxINT32_SWAP_ON_BE(compsize);
// Check offset+size
if ((unsigned)(offset + compsize) > mc.getSize()) {
wxLogMessage("ADatArchive::open: dat archive is invalid or corrupt (entry goes past end of file)");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Parse name
wxFileName fn(wxString::FromAscii(name, 128));
// Create directory if needed
ArchiveTreeNode* dir = createDir(fn.GetPath(true, wxPATH_UNIX));
// Create entry
ArchiveEntry* entry = new ArchiveEntry(fn.GetFullName(), compsize);
entry->exProp("Offset") = (int)offset;
entry->exProp("FullSize") = (int)decsize;
entry->setLoaded(false);
entry->setState(0);
// Add to directory
dir->addEntry(entry);
}
// Detect all entry types
MemChunk edata;
vector<ArchiveEntry*> all_entries;
getEntryTreeAsList(all_entries);
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < all_entries.size(); a++) {
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_entries)));
// Get entry
ArchiveEntry* entry = all_entries[a];
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0) {
// Read the entry data
mc.exportMemChunk(edata, (int)entry->exProp("Offset"), entry->getSize());
MemChunk xdata;
if (Compression::ZlibInflate(edata, xdata, (int)entry->exProp("FullSize")))
entry->importMemChunk(xdata);
else {
wxLogMessage("Entry %s couldn't be inflated", CHR(entry->getName()));
entry->importMemChunk(edata);
}
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* Wad2Archive::open
* Reads wad format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool Wad2Archive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read wad header
uint32_t num_lumps = 0;
uint32_t dir_offset = 0;
char wad_type[4] = "";
mc.seek(0, SEEK_SET);
mc.read(&wad_type, 4); // Wad type
mc.read(&num_lumps, 4); // No. of lumps in wad
mc.read(&dir_offset, 4); // Offset to directory
// Byteswap values for big endian if needed
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check the header
if (wad_type[0] != 'W' || wad_type[1] != 'A' || wad_type[2] != 'D' ||
(wad_type[3] != '2' && wad_type[3] != '3'))
{
wxLogMessage("Wad2Archive::open: Invalid header");
Global::error = "Invalid wad2 header";
return false;
}
if (wad_type[3] == '3')
wad3 = true;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
mc.seek(dir_offset, SEEK_SET);
theSplashWindow->setProgressMessage("Reading wad archive data");
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_lumps));
// Read lump info
wad2entry_t info;
mc.read(&info, 32);
// Byteswap values for big endian if needed
info.offset = wxINT32_SWAP_ON_BE(info.offset);
info.size = wxINT32_SWAP_ON_BE(info.size);
info.dsize = wxINT32_SWAP_ON_BE(info.dsize);
// If the lump data goes past the end of the file,
// the wadfile is invalid
if ((unsigned)(info.offset + info.dsize) > mc.getSize())
{
wxLogMessage("Wad2Archive::open: Wad2 archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(info.name, 16), info.dsize);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)info.offset;
nlump->exProp("W2Type") = info.type;
nlump->exProp("W2Size") = (int)info.size;
nlump->exProp("W2Comp") = !!(info.cmprs);
nlump->setState(0);
// Add to entry list
getRoot()->addEntry(nlump);
}
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_lumps)));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, (int)entry->exProp("Offset"), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Detect maps (will detect map entry types)
theSplashWindow->setProgressMessage("Detecting maps");
detectMaps();
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* GobArchive::open
* Reads gob format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool GobArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Check size
if (mc.getSize() < 12)
return false;
// Check magic header
if (mc[0] != 'G' || mc[1] != 'O' || mc[2] != 'B' || mc[3] != 0xA)
return false;
// Get directory offset
uint32_t dir_offset = 0;
mc.seek(4, SEEK_SET);
mc.read(&dir_offset, 4);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check size
if ((unsigned)mc.getSize() < (dir_offset + 4))
return false;
// Get number of lumps
uint32_t num_lumps = 0;
mc.seek(dir_offset, SEEK_SET);
mc.read(&num_lumps, 4);
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
// Compute directory size
uint32_t dir_size = (num_lumps * 21) + 4;
if ((unsigned)mc.getSize() < (dir_offset + dir_size))
return false;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
theSplashWindow->setProgressMessage("Reading gob archive data");
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_lumps));
// Read lump info
uint32_t offset = 0;
uint32_t size = 0;
char name[13] = "";
mc.read(&offset, 4); // Offset
mc.read(&size, 4); // Size
mc.read(name, 13); // Name
name[12] = '\0';
// Byteswap values for big endian if needed
size = wxINT32_SWAP_ON_BE(size);
// If the lump data goes past the end of the file,
// the gobfile is invalid
if (offset + size > mc.getSize())
{
wxLogMessage("GobArchive::open: gob archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
// Add to entry list
getRoot()->addEntry(nlump);
}
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_lumps)));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* WadArchive::open
* Reads wad format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool WadArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read wad header
uint32_t num_lumps = 0;
uint32_t dir_offset = 0;
char wad_type[4] = "";
mc.seek(0, SEEK_SET);
mc.read(&wad_type, 4); // Wad type
mc.read(&num_lumps, 4); // No. of lumps in wad
mc.read(&dir_offset, 4); // Offset to directory
// Byteswap values for big endian if needed
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check the header
if (wad_type[1] != 'W' || wad_type[2] != 'A' || wad_type[3] != 'D')
{
wxLogMessage("WadArchive::openFile: File %s has invalid header", filename);
Global::error = "Invalid wad header";
return false;
}
// Check for iwad
if (wad_type[0] == 'I')
iwad = true;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
vector<uint32_t> offsets;
// Read the directory
mc.seek(dir_offset, SEEK_SET);
theSplashWindow->setProgressMessage("Reading wad archive data");
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_lumps));
// Read lump info
char name[9] = "";
uint32_t offset = 0;
uint32_t size = 0;
mc.read(&offset, 4); // Offset
mc.read(&size, 4); // Size
mc.read(name, 8); // Name
name[8] = '\0';
// Byteswap values for big endian if needed
offset = wxINT32_SWAP_ON_BE(offset);
size = wxINT32_SWAP_ON_BE(size);
// Check to catch stupid shit
if (size > 0)
{
if (offset == 0)
{
LOG_MESSAGE(2, "No.");
continue;
}
if (VECTOR_EXISTS(offsets, offset))
{
LOG_MESSAGE(1, "Ignoring entry %d: %s, is a clone of a previous entry", d, name);
continue;
}
offsets.push_back(offset);
}
// Hack to open Operation: Rheingold WAD files
if (size == 0 && offset > mc.getSize())
offset = 0;
// Is there a compression/encryption thing going on?
bool jaguarencrypt = !!(name[0] & 0x80); // look at high bit
name[0] = name[0] & 0x7F; // then strip it away
// Look for encryption shenanigans
size_t actualsize = size;
if (jaguarencrypt)
{
if (d < num_lumps - 1)
{
size_t pos = mc.currentPos();
uint32_t nextoffset = 0;
for (int i = 0; i + d < num_lumps; ++i)
{
mc.read(&nextoffset, 4);
if (nextoffset != 0) break;
mc.seek(12, SEEK_CUR);
}
nextoffset = wxINT32_SWAP_ON_BE(nextoffset);
if (nextoffset == 0) nextoffset = dir_offset;
mc.seek(pos, SEEK_SET);
actualsize = nextoffset - offset;
}
else
{
if (offset > dir_offset)
{
actualsize = mc.getSize() - offset;
}
else
{
actualsize = dir_offset - offset;
}
}
}
// If the lump data goes past the end of the file,
// the wadfile is invalid
if (offset + actualsize > mc.getSize())
{
wxLogMessage("WadArchive::open: Wad archive is invalid or corrupt");
Global::error = S_FMT("Archive is invalid and/or corrupt (lump %d: %s data goes past end of file)", d, name);
setMuted(false);
return false;
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
if (jaguarencrypt)
{
nlump->setEncryption(ENC_JAGUAR);
nlump->exProp("FullSize") = (int)size;
}
// Add to entry list
getRoot()->addEntry(nlump);
}
// Detect namespaces (needs to be done before type detection as some types
// rely on being within certain namespaces)
updateNamespaces();
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)numEntries())));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->getSize());
if (entry->isEncrypted())
{
if (entry->exProps().propertyExists("FullSize")
&& (unsigned)(int)(entry->exProp("FullSize")) > entry->getSize())
edata.reSize((int)(entry->exProp("FullSize")), true);
if (!JaguarDecode(edata))
wxLogMessage("%i: %s (following %s), did not decode properly", a, entry->getName(), a>0?getEntry(a-1)->getName():"nothing");
}
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Identify #included lumps (DECORATE, GLDEFS, etc.)
detectIncludes();
// Detect maps (will detect map entry types)
theSplashWindow->setProgressMessage("Detecting maps");
detectMaps();
// Setup variables
setMuted(false);
setModified(false);
//if (iwad && iwad_lock) read_only = true;
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* HogArchive::open
* Reads hog format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool HogArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Check size
size_t archive_size = mc.getSize();
if (archive_size < 3)
return false;
// Check magic header (DHF for "Descent Hog File")
if (mc[0] != 'D' || mc[1] != 'H' || mc[2] != 'F')
return false;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Iterate through files to see if the size seems okay
theSplashWindow->setProgressMessage("Reading hog archive data");
size_t iter_offset = 3;
uint32_t num_lumps = 0;
while (iter_offset < archive_size)
{
// Update splash window progress
theSplashWindow->setProgress(((float)iter_offset / (float)archive_size));
// If the lump data goes past the end of the file,
// the hogfile is invalid
if (iter_offset + 17 > archive_size)
{
wxLogMessage("HogArchive::open: hog archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Setup variables
num_lumps++;
size_t offset = iter_offset + 17;
size_t size = READ_L32(mc, iter_offset + 13);
char name[14] = "";
mc.seek(iter_offset, SEEK_SET);
mc.read(name, 13);
name[13] = 0;
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
// Add to entry list
getRoot()->addEntry(nlump);
// Update entry size to compute next offset
iter_offset = offset + size;
}
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_lumps)));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* LfdArchive::open
* Reads lfd format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool LfdArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Check size
if (mc.getSize() < 16)
return false;
// Check magic header
if (mc[0] != 'R' || mc[1] != 'M' || mc[2] != 'A' || mc[3] != 'P')
return false;
// Get directory length
uint32_t dir_len = 0;
mc.seek(12, SEEK_SET);
mc.read(&dir_len, 4);
dir_len = wxINT32_SWAP_ON_BE(dir_len);
// Check size
if ((unsigned)mc.getSize() < (dir_len) || dir_len % 16)
return false;
// Guess number of lumps
uint32_t num_lumps = dir_len / 16;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read each entry
theSplashWindow->setProgressMessage("Reading lfd archive data");
size_t offset = dir_len + 16;
size_t size = mc.getSize();
for (uint32_t d = 0; offset < size; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_lumps));
// Read lump info
uint32_t length = 0;
char type[5] = "";
char name[9] = "";
mc.read(type, 4); // Type
mc.read(name, 8); // Name
mc.read(&length, 4); // Size
name[8] = '\0'; type[4] = 0;
// Move past the header
offset += 16;
// Byteswap values for big endian if needed
length = wxINT32_SWAP_ON_BE(length);
// If the lump data goes past the end of the file,
// the gobfile is invalid
if (offset + length > size)
{
wxLogMessage("LfdArchive::open: lfd archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
wxFileName fn(name);
fn.SetExt(type);
ArchiveEntry* nlump = new ArchiveEntry(fn.GetFullName(), length);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
// Add to entry list
getRoot()->addEntry(nlump);
// Move to next entry
offset += length;
mc.seek(offset, SEEK_SET);
}
if (num_lumps != numEntries())
wxLogMessage("Warning: computed %i lumps, but actually %i entries", num_lumps, numEntries());
// Detect all entry types
MemChunk edata;
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_lumps)));
// Get entry
ArchiveEntry* entry = getEntry(a);
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
/* PakArchive::open
* Reads pak format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool PakArchive::open(MemChunk& mc)
{
// Check given data is valid
if (mc.getSize() < 12)
return false;
// Read pak header
char pack[4];
long dir_offset;
long dir_size;
mc.seek(0, SEEK_SET);
mc.read(pack, 4);
mc.read(&dir_offset, 4);
mc.read(&dir_size, 4);
// Check it
if (pack[0] != 'P' || pack[1] != 'A' || pack[2] != 'C' || pack[3] != 'K')
{
wxLogMessage("PakArchive::open: Opening failed, invalid header");
Global::error = "Invalid pak header";
return false;
}
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
size_t num_entries = dir_size / 64;
mc.seek(dir_offset, SEEK_SET);
theSplashWindow->setProgressMessage("Reading pak archive data");
for (uint32_t d = 0; d < num_entries; d++)
{
// Update splash window progress
theSplashWindow->setProgress(((float)d / (float)num_entries));
// Read entry info
char name[56];
long offset;
long size;
mc.read(name, 56);
mc.read(&offset, 4);
mc.read(&size, 4);
// Byteswap if needed
offset = wxINT32_SWAP_ON_BE(offset);
size = wxINT32_SWAP_ON_BE(size);
// Check offset+size
if ((unsigned)(offset + size) > mc.getSize())
{
wxLogMessage("PakArchive::open: Pak archive is invalid or corrupt (entry goes past end of file)");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Parse name
wxFileName fn(wxString::FromAscii(name, 56));
// Create directory if needed
ArchiveTreeNode* dir = createDir(fn.GetPath(true, wxPATH_UNIX));
// Create entry
ArchiveEntry* entry = new ArchiveEntry(fn.GetFullName(), size);
entry->exProp("Offset") = (int)offset;
entry->setLoaded(false);
entry->setState(0);
// Add to directory
dir->addEntry(entry);
}
// Detect all entry types
MemChunk edata;
vector<ArchiveEntry*> all_entries;
getEntryTreeAsList(all_entries);
theSplashWindow->setProgressMessage("Detecting entry types");
for (size_t a = 0; a < all_entries.size(); a++)
{
// Update splash window progress
theSplashWindow->setProgress((((float)a / (float)num_entries)));
// Get entry
ArchiveEntry* entry = all_entries[a];
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, (int)entry->exProp("Offset"), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
theSplashWindow->setProgressMessage("");
return true;
}
// -----------------------------------------------------------------------------
// Reads disk format data from a MemChunk.
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool DiskArchive::open(MemChunk& mc)
{
size_t mcsize = mc.getSize();
// Check given data is valid
if (mcsize < 80)
return false;
// Read disk header
uint32_t num_entries;
mc.seek(0, SEEK_SET);
mc.read(&num_entries, 4);
num_entries = wxUINT32_SWAP_ON_LE(num_entries);
size_t start_offset = (72 * num_entries) + 8;
if (mcsize < start_offset)
return false;
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Read the directory
UI::setSplashProgressMessage("Reading disk archive data");
for (uint32_t d = 0; d < num_entries; d++)
{
// Update splash window progress
UI::setSplashProgress(((float)d / (float)num_entries));
// Read entry info
DiskEntry dent;
mc.read(&dent, 72);
// Byteswap if needed
dent.length = wxUINT32_SWAP_ON_LE(dent.length);
dent.offset = wxUINT32_SWAP_ON_LE(dent.offset);
// Increase offset to make it relative to start of archive
dent.offset += start_offset;
// Check offset+size
if (dent.offset + dent.length > mcsize)
{
LOG_MESSAGE(1, "DiskArchive::open: Disk archive is invalid or corrupt (entry goes past end of file)");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Parse name
string name = wxString::FromAscii(dent.name, 64);
name.Replace("\\", "/");
name.Replace("GAME:/", "");
wxFileName fn(name);
// Create directory if needed
ArchiveTreeNode* dir = createDir(fn.GetPath(true, wxPATH_UNIX));
// Create entry
ArchiveEntry* entry = new ArchiveEntry(fn.GetFullName(), dent.length);
entry->exProp("Offset") = (int)dent.offset;
entry->setLoaded(false);
entry->setState(0);
// Add to directory
dir->addEntry(entry);
}
// Detect all entry types
MemChunk edata;
vector<ArchiveEntry*> all_entries;
getEntryTreeAsList(all_entries);
UI::setSplashProgressMessage("Detecting entry types");
for (size_t a = 0; a < all_entries.size(); a++)
{
// Update splash window progress
UI::setSplashProgress((((float)a / (float)num_entries)));
// Get entry
ArchiveEntry* entry = all_entries[a];
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, (int)entry->exProp("Offset"), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
// Unload entry data if needed
if (!archive_load_data)
entry->unloadData();
// Set entry to unchanged
entry->setState(0);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
UI::setSplashProgressMessage("");
return true;
}