/* DatArchive::loadEntryData
* Loads an entry's data from the datfile
* Returns true if successful, false otherwise
*******************************************************************/
bool DatArchive::loadEntryData(ArchiveEntry* entry)
{
// Check the entry is valid and part of this archive
if (!checkEntry(entry))
return false;
// Do nothing if the lump's size is zero,
// or if it has already been loaded
if (entry->getSize() == 0 || entry->isLoaded())
{
entry->setLoaded();
return true;
}
// Open wadfile
wxFile file(filename);
// Check if opening the file failed
if (!file.IsOpened())
{
wxLogMessage("DatArchive::loadEntryData: Failed to open datfile %s", filename);
return false;
}
// Seek to lump offset in file and read it in
file.Seek(getEntryOffset(entry), wxFromStart);
entry->importFileStream(file, entry->getSize());
// Set the lump to loaded
entry->setLoaded();
return true;
}
/* GobArchive::write
* Writes the gob archive to a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool GobArchive::write(MemChunk& mc, bool update)
{
// Determine directory offset & individual lump offsets
uint32_t dir_offset = 8;
ArchiveEntry* entry = NULL;
for (uint32_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
setEntryOffset(entry, dir_offset);
dir_offset += entry->getSize();
}
// Clear/init MemChunk
mc.clear();
mc.seek(0, SEEK_SET);
mc.reSize(dir_offset + 4 + numEntries() * 21);
// Write the header
uint32_t num_lumps = wxINT32_SWAP_ON_BE(numEntries());
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
char header[4] = { 'G', 'O', 'B', 0xA };
mc.write(header, 4);
mc.write(&dir_offset, 4);
// Write the lumps
for (uint32_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
mc.write(entry->getData(), entry->getSize());
}
// Write the directory
mc.write(&num_lumps, 4);
for (uint32_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
char name[13] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
long offset = wxINT32_SWAP_ON_BE(getEntryOffset(entry));
long size = wxINT32_SWAP_ON_BE(entry->getSize());
for (size_t c = 0; c < entry->getName().length() && c < 13; c++)
name[c] = entry->getName()[c];
mc.write(&offset, 4);
mc.write(&size, 4);
mc.write(name, 13);
if (update)
{
entry->setState(0);
entry->exProp("Offset") = (int)offset;
}
}
return true;
}
// -----------------------------------------------------------------------------
// Writes the grp archive to a MemChunk
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool GrpArchive::write(MemChunk& mc, bool update)
{
// Clear/init MemChunk
mc.clear();
mc.seek(0, SEEK_SET);
mc.reSize((1 + numEntries()) * 16);
ArchiveEntry* entry;
// Write the header
uint32_t num_lumps = numEntries();
mc.write("KenSilverman", 12);
mc.write(&num_lumps, 4);
// Write the directory
for (uint32_t l = 0; l < num_lumps; l++)
{
entry = entryAt(l);
char name[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
long size = entry->size();
for (size_t c = 0; c < entry->name().length() && c < 12; c++)
name[c] = entry->name()[c];
mc.write(name, 12);
mc.write(&size, 4);
if (update)
{
long offset = getEntryOffset(entry);
entry->setState(ArchiveEntry::State::Unmodified);
entry->exProp("Offset") = (int)offset;
}
}
// Write the lumps
for (uint32_t l = 0; l < num_lumps; l++)
{
entry = entryAt(l);
mc.write(entry->rawData(), entry->size());
}
return true;
}
/* DatArchive::open
* Reads wad format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool DatArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
const uint8_t* mcdata = mc.getData();
// Read dat header
mc.seek(0, SEEK_SET);
uint16_t num_lumps;
uint32_t dir_offset, unknown;
mc.read(&num_lumps, 2); // Size
mc.read(&dir_offset, 4); // Directory offset
mc.read(&unknown, 4); // Unknown value
num_lumps = wxINT16_SWAP_ON_BE(num_lumps);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
unknown = wxINT32_SWAP_ON_BE(unknown);
string lastname(wxString::FromAscii("-noname-"));
size_t namecount = 0;
// 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 dat 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;
uint16_t nameofs = 0;
uint16_t flags = 0;
mc.read(&offset, 4); // Offset
mc.read(&size, 4); // Size
mc.read(&nameofs, 2); // Name offset
mc.read(&flags, 2); // Flags (only one: RLE encoded)
// Byteswap values for big endian if needed
offset = wxINT32_SWAP_ON_BE(offset);
size = wxINT32_SWAP_ON_BE(size);
nameofs = wxINT16_SWAP_ON_BE(nameofs);
flags = wxINT16_SWAP_ON_BE(flags);
// If the lump data goes past the directory,
// the data file is invalid
if (offset + size > mc.getSize())
{
wxLogMessage("DatArchive::open: Dat archive is invalid or corrupt at entry %i", d);
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
string myname;
if (nameofs != 0)
{
size_t len = 1;
size_t start = nameofs+dir_offset;
for (size_t i = start; mcdata[i] != 0; ++i) { ++len; }
lastname = myname = wxString::FromAscii(mcdata+start, len);
namecount = 0;
}
else
{
myname = S_FMT("%s+%d", lastname, ++namecount);
}
// Create & setup lump
ArchiveEntry* nlump = new ArchiveEntry(myname, size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(0);
if (flags & 1) nlump->setEncryption(ENC_SCRLE0);
// Check for markers
if (!nlump->getName().Cmp("startflats"))
flats[0] = d;
if (!nlump->getName().Cmp("endflats"))
flats[1] = d;
if (!nlump->getName().Cmp("startsprites"))
sprites[0] = d;
if (!nlump->getName().Cmp("endmonsters"))
sprites[1] = d;
if (!nlump->getName().Cmp("startwalls"))
walls[0] = d;
if (!nlump->getName().Cmp("endwalls"))
walls[1] = d;
// 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);
// 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;
}
/* DatArchive::write
* Writes the dat archive to a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool DatArchive::write(MemChunk& mc, bool update)
{
// Only two bytes are used for storing entry amount,
// so abort for excessively large files:
if (numEntries() > 65535)
return false;
// Determine directory offset, name offsets & individual lump offsets
uint32_t dir_offset = 10;
uint16_t name_offset = numEntries() * 12;
uint32_t name_size = 0;
string previousname = "";
uint16_t* nameoffsets = new uint16_t[numEntries()];
ArchiveEntry* entry = NULL;
for (uint16_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
setEntryOffset(entry, dir_offset);
dir_offset += entry->getSize();
// Does the entry has a name?
string name = entry->getName();
if (l > 0 && previousname.length() > 0 && name.length() > previousname.length() &&
!previousname.compare(0, previousname.length(), name, 0, previousname.length()) &&
name.at(previousname.length()) == '+')
{
// This is a fake name
name = "";
nameoffsets[l] = 0;
}
else
{
// This is a true name
previousname = name;
nameoffsets[l] = uint16_t(name_offset + name_size);
name_size += name.length() + 1;
}
}
// Clear/init MemChunk
mc.clear();
mc.seek(0, SEEK_SET);
mc.reSize(dir_offset + name_size + numEntries() * 12);
// Write the header
uint16_t num_lumps = wxINT16_SWAP_ON_BE(numEntries());
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
uint32_t unknown = 0;
mc.write(&num_lumps, 2);
mc.write(&dir_offset, 4);
mc.write(&unknown, 4);
// Write the lumps
for (uint16_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
mc.write(entry->getData(), entry->getSize());
}
// Write the directory
for (uint16_t l = 0; l < num_lumps; l++)
{
entry = getEntry(l);
uint32_t offset = wxINT32_SWAP_ON_BE(getEntryOffset(entry));
uint32_t size = wxINT32_SWAP_ON_BE(entry->getSize());
uint16_t nameofs = wxINT16_SWAP_ON_BE(nameoffsets[l]);
uint16_t flags = wxINT16_SWAP_ON_BE((entry->isEncrypted() == ENC_SCRLE0) ? 1 : 0);
mc.write(&offset, 4); // Offset
mc.write(&size, 4); // Size
mc.write(&nameofs, 2); // Name offset
mc.write(&flags, 2); // Flags
if (update)
{
entry->setState(0);
entry->exProp("Offset") = (int)wxINT32_SWAP_ON_BE(offset);
}
}
// Write the names
for (uint16_t l = 0; l < num_lumps; l++)
{
uint8_t zero = 0;
entry = getEntry(l);
if (nameoffsets[l])
{
mc.write(CHR(entry->getName()), entry->getName().length());
mc.write(&zero, 1);
}
}
// Clean-up
delete[] nameoffsets;
// Finished!
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;
}
/* 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::write
* Writes the wad archive to a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool WadArchive::write(MemChunk& mc, bool update)
{
// Don't write if iwad
if (iwad && iwad_lock)
{
Global::error = "IWAD saving disabled";
return false;
}
// Determine directory offset & individual lump offsets
uint32_t dir_offset = 12;
ArchiveEntry* entry = NULL;
for (uint32_t l = 0; l < numEntries(); l++)
{
entry = getEntry(l);
setEntryOffset(entry, dir_offset);
dir_offset += entry->getSize();
}
// Clear/init MemChunk
mc.clear();
mc.seek(0, SEEK_SET);
mc.reSize(dir_offset + numEntries() * 16);
// Setup wad type
char wad_type[4] = { 'P', 'W', 'A', 'D' };
if (iwad) wad_type[0] = 'I';
// Write the header
uint32_t num_lumps = numEntries();
mc.write(wad_type, 4);
mc.write(&num_lumps, 4);
mc.write(&dir_offset, 4);
// Write the lumps
for (uint32_t l = 0; l < num_lumps; l++)
{
entry = getEntry(l);
mc.write(entry->getData(), entry->getSize());
}
// Write the directory
for (uint32_t l = 0; l < num_lumps; l++)
{
entry = getEntry(l);
char name[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
long offset = getEntryOffset(entry);
long size = entry->getSize();
for (size_t c = 0; c < entry->getName().length() && c < 8; c++)
name[c] = entry->getName()[c];
mc.write(&offset, 4);
mc.write(&size, 4);
mc.write(name, 8);
if (update)
{
entry->setState(0);
entry->exProp("Offset") = (int)offset;
}
}
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;
}
// -----------------------------------------------------------------------------
// Reads grp format data from a MemChunk
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool GrpArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read grp header
uint32_t num_lumps = 0;
char ken_magic[13] = "";
mc.seek(0, SEEK_SET);
mc.read(ken_magic, 12); // "KenSilverman"
mc.read(&num_lumps, 4); // No. of lumps in grp
// Byteswap values for big endian if needed
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
// Null-terminate the magic header
ken_magic[12] = 0;
// Check the header
if (!(S_CMP(wxString::FromAscii(ken_magic), "KenSilverman")))
{
Log::error(S_FMT("GrpArchive::openFile: File %s has invalid header", filename_));
Global::error = "Invalid grp header";
return false;
}
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// The header takes as much space as a directory entry
uint32_t entryoffset = 16 * (1 + num_lumps);
// Read the directory
UI::setSplashProgressMessage("Reading grp archive data");
for (uint32_t d = 0; d < num_lumps; d++)
{
// Update splash window progress
UI::setSplashProgress(((float)d / (float)num_lumps));
// Read lump info
char name[13] = "";
uint32_t offset = entryoffset;
uint32_t size = 0;
mc.read(name, 12); // Name
mc.read(&size, 4); // Size
name[12] = '\0';
// Byteswap values for big endian if needed
size = wxINT32_SWAP_ON_BE(size);
// Increase offset of next entry by this entry's size
entryoffset += size;
// If the lump data goes past the end of the file,
// the grpfile is invalid
if (offset + size > mc.size())
{
Log::error("GrpArchive::open: grp archive is invalid or corrupt");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Create & setup lump
auto nlump = std::make_shared<ArchiveEntry>(wxString::FromAscii(name), size);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(ArchiveEntry::State::Unmodified);
// Add to entry list
rootDir()->addEntry(nlump);
}
// Detect all entry types
MemChunk edata;
UI::setSplashProgressMessage("Detecting entry types");
for (size_t a = 0; a < numEntries(); a++)
{
// Update splash window progress
UI::setSplashProgress((((float)a / (float)num_lumps)));
// Get entry
auto entry = entryAt(a);
// Read entry data if it isn't zero-sized
if (entry->size() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, getEntryOffset(entry), entry->size());
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(ArchiveEntry::State::Unmodified);
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
UI::setSplashProgressMessage("");
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;
}
