/* Wad2Archive::isWad2Archive
* Checks if the given data is a valid Quake wad2 archive
*******************************************************************/
bool Wad2Archive::isWad2Archive(MemChunk& mc)
{
// Check size
if (mc.getSize() < 12)
return false;
// Check for IWAD/PWAD header
if (mc[0] != 'W' || mc[1] != 'A' || mc[2] != 'D' || (mc[3] != '2' && mc[3] != '3'))
return false;
// Get number of lumps and directory offset
int32_t num_lumps = 0;
int32_t dir_offset = 0;
mc.seek(4, SEEK_SET);
mc.read(&num_lumps, 4);
mc.read(&dir_offset, 4);
// Reset MemChunk (just in case)
mc.seek(0, SEEK_SET);
// Byteswap values for big endian if needed
num_lumps = wxINT32_SWAP_ON_BE(num_lumps);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check directory offset is decent
if ((unsigned)(dir_offset + (num_lumps * 32)) > mc.getSize() ||
dir_offset < 12)
return false;
// If it's passed to here it's probably a wad2 file
return true;
}
/* ChasmBinArchive::isChasmBinArchive
* Checks if the given data is a valid Chasm bin archive
*******************************************************************/
bool ChasmBinArchive::isChasmBinArchive(MemChunk& mc)
{
// Check given data is valid
if (mc.getSize() < HEADER_SIZE)
{
return false;
}
// Read bin header and check it
char magic[4] = {};
mc.read(magic, sizeof magic);
if ( magic[0] != 'C'
|| magic[1] != 'S'
|| magic[2] != 'i'
|| magic[3] != 'd')
{
return false;
}
uint16_t num_entries = 0;
mc.read(&num_entries, sizeof num_entries);
num_entries = wxUINT16_SWAP_ON_BE(num_entries);
return num_entries > MAX_ENTRY_COUNT
|| (HEADER_SIZE + ENTRY_SIZE * MAX_ENTRY_COUNT) <= mc.getSize();
}
/* PakArchive::isPakArchive
* Checks if the given data is a valid Quake pak archive
*******************************************************************/
bool PakArchive::isPakArchive(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);
// Byteswap values for big endian if needed
dir_size = wxINT32_SWAP_ON_BE(dir_size);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check header
if (pack[0] != 'P' || pack[1] != 'A' || pack[2] != 'C' || pack[3] != 'K')
return false;
// Check directory is sane
if (dir_offset < 12 || (unsigned)(dir_offset + dir_size) > mc.getSize())
return false;
// That'll do
return true;
}
/* ADatArchive::isADatArchive
* Checks if the given data is a valid Anachronox dat archive
*******************************************************************/
bool ADatArchive::isADatArchive(MemChunk& mc) {
// Check it opened ok
if (mc.getSize() < 16)
return false;
// Read dat header
char magic[4];
long dir_offset;
long dir_size;
long version;
mc.seek(0, SEEK_SET);
mc.read(magic, 4);
mc.read(&dir_offset, 4);
mc.read(&dir_size, 4);
mc.read(&version, 4);
// Byteswap values for big endian if needed
dir_size = wxINT32_SWAP_ON_BE(dir_size);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check version
if (wxINT32_SWAP_ON_BE(version) != 9)
return false;
// Check header
if (magic[0] != 'A' || magic[1] != 'D' || magic[2] != 'A' || magic[3] != 'T')
return false;
// Check directory is sane
if (dir_offset < 16 || (unsigned)(dir_offset + dir_size) > mc.getSize())
return false;
// That'll do
return true;
}
// -----------------------------------------------------------------------------
// Checks if the given data is a valid pod archive
// -----------------------------------------------------------------------------
bool PodArchive::isPodArchive(MemChunk& mc)
{
// Check size for header
if (mc.size() < 84)
return false;
// Read no. of files
mc.seek(0, 0);
uint32_t num_files;
mc.read(&num_files, 4);
// Read id
char id[80];
mc.read(id, 80);
// Check size for directory
if (mc.size() < 84 + (num_files * 40))
return false;
// Read directory and check offsets
FileEntry entry;
for (unsigned a = 0; a < num_files; a++)
{
mc.read(&entry, 40);
if (entry.offset + entry.size > mc.size())
return false;
}
return true;
}
/* GobArchive::isGobArchive
* Checks if the given data is a valid Dark Forces gob archive
*******************************************************************/
bool GobArchive::isGobArchive(MemChunk& mc)
{
// 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;
// If it's passed to here it's probably a gob file
return true;
}
/* ResArchive::open
* Reads res format data from a MemChunk
* Returns true if successful, false otherwise
*******************************************************************/
bool ResArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read res header
uint32_t dir_size = 0;
uint32_t dir_offset = 0;
char magic[4] = "";
mc.seek(0, SEEK_SET);
mc.read(&magic, 4); // "Res!"
mc.read(&dir_offset, 4); // Offset to directory
mc.read(&dir_size, 4); // No. of lumps in res
// Byteswap values for big endian if needed
dir_size = wxINT32_SWAP_ON_BE(dir_size);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// Check the header
if (magic[0] != 'R' || magic[1] != 'e' || magic[2] != 's' || magic[3] != '!')
{
LOG_MESSAGE(1, "ResArchive::openFile: File %s has invalid header", filename);
Global::error = "Invalid res header";
return false;
}
if (dir_size % RESDIRENTRYSIZE)
{
LOG_MESSAGE(1, "ResArchive::openFile: File %s has invalid directory size", filename);
Global::error = "Invalid res directory size";
return false;
}
uint32_t num_lumps = dir_size / RESDIRENTRYSIZE;
// 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);
UI::setSplashProgressMessage("Reading res archive data");
if (!readDirectory(mc, dir_offset, num_lumps, getRoot()))
return false;
// Detect maps (will detect map entry types)
UI::setSplashProgressMessage("Detecting maps");
detectMaps();
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
UI::setSplashProgressMessage("");
return true;
}
void MapTextureManager::onAnnouncement(Announcer* announcer, string event_name, MemChunk& event_data)
{
// Only interested in the resource manager,
// archive manager and palette chooser.
if (announcer != theResourceManager
&& announcer != thePaletteChooser
&& announcer != theArchiveManager)
return;
// If the map's archive is being closed,
// we need to close the map editor
if (event_name == "archive_closing")
{
event_data.seek(0, SEEK_SET);
int32_t ac_index;
event_data.read(&ac_index, 4);
if (theArchiveManager->getArchive(ac_index) == archive)
{
theMapEditor->Hide();
theMapEditor->mapEditor().clearMap();
archive = NULL;
}
}
// If the resources have been updated
if (event_name == "resources_updated")
refreshResources();
if (event_name == "main_palette_changed")
refreshResources();
}
// -----------------------------------------------------------------------------
// Handles announcements from any announcers listened to
// -----------------------------------------------------------------------------
void MapTextureManager::onAnnouncement(Announcer* announcer, std::string_view event_name, MemChunk& event_data)
{
// Only interested in the resource manager,
// archive manager and palette chooser.
if (announcer != &App::resources() && announcer != theMainWindow->paletteChooser()
&& announcer != &App::archiveManager())
return;
// If the map's archive is being closed,
// we need to close the map editor
if (event_name == "archive_closing")
{
event_data.seek(0, SEEK_SET);
int32_t ac_index;
event_data.read(&ac_index, 4);
if (App::archiveManager().getArchive(ac_index) == archive_)
{
MapEditor::windowWx()->Hide();
MapEditor::editContext().clearMap();
archive_ = nullptr;
}
}
// If the resources have been updated
if (event_name == "resources_updated")
refreshResources();
if (event_name == "main_palette_changed")
refreshResources();
}
/* RffArchive::isRffArchive
* Checks if the given data is a valid Duke Nukem 3D grp archive
*******************************************************************/
bool RffArchive::isRffArchive(MemChunk& mc)
{
// Check size
if (mc.getSize() < 12)
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)
return false;
// Compute total size
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));
uint32_t totalsize = 12 + num_lumps * sizeof(RFFLump);
uint32_t size = 0;
for (uint32_t a = 0; a < num_lumps; ++a)
{
totalsize += lumps[a].Size;
}
// Check if total size is correct
if (totalsize > mc.getSize())
return false;
// If it's passed to here it's probably a grp file
return true;
}
// -----------------------------------------------------------------------------
// Checks if the given data is a valid Nerve disk archive
// -----------------------------------------------------------------------------
bool DiskArchive::isDiskArchive(MemChunk& mc)
{
// Check given data is valid
size_t mcsize = mc.getSize();
if (mcsize < 80)
return false;
// Read disk header
uint32_t num_entries;
uint32_t size_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;
// Read the directory
for (uint32_t d = 0; d < num_entries; d++)
{
// Read entry info
DiskEntry entry;
mc.read(&entry, 72);
// Byteswap if needed
entry.length = wxUINT32_SWAP_ON_LE(entry.length);
entry.offset = wxUINT32_SWAP_ON_LE(entry.offset);
// Increase offset to make it relative to start of archive
entry.offset += start_offset;
// Check offset+size
if (entry.offset + entry.length > mcsize)
return false;
}
mc.read(&size_entries, 4);
size_entries = wxUINT32_SWAP_ON_LE(size_entries);
if (size_entries + start_offset != mcsize)
return false;
// That'll do
return true;
}
/* DatArchive::isDatArchive
* Checks if the given data is a valid Shadowcaster dat archive
*******************************************************************/
bool DatArchive::isDatArchive(MemChunk& mc)
{
// Read dat header
mc.seek(0, SEEK_SET);
uint16_t num_lumps;
uint32_t dir_offset, junk;
mc.read(&num_lumps, 2); // Size
mc.read(&dir_offset, 4); // Directory offset
mc.read(&junk, 4); // Unknown value
num_lumps = wxINT16_SWAP_ON_BE(num_lumps);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
junk = wxINT32_SWAP_ON_BE(junk);
if (dir_offset >= mc.getSize())
return false;
// Read the directory
mc.seek(dir_offset, SEEK_SET);
// 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
// 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);
// The first lump should have a name (subsequent lumps need not have one).
// Also, sanity check the values.
if (nameofs == 0 || nameofs >= mc.getSize() || offset + size >= mc.getSize())
{
return false;
}
size_t len = 1;
size_t start = nameofs+dir_offset;
// Sanity checks again. Make sure there is actually a name.
if (start > mc.getSize() || mc[start] < 33)
return false;
for (size_t i = start; (mc[i] != 0 && i < mc.getSize()); ++i, ++len)
{
// Names should not contain garbage characters
if (mc[i] < 32 || mc[i] > 126)
return false;
}
// Let's be reasonable here. While names aren't limited, if it's too long, it's suspicious.
if (len > 60)
return false;
return true;
}
void onAnnouncement(Announcer* announcer, string event_name, MemChunk& event_data)
{
if (announcer != entry->getParent())
return;
bool finished = false;
// Entry removed
if (event_name == "entry_removed")
{
int index;
wxUIntPtr ptr;
event_data.read(&index, sizeof(int));
event_data.read(&ptr, sizeof(wxUIntPtr));
if (wxUIntToPtr(ptr) == entry)
finished = true;
}
if (finished)
delete this;
}
bool readImage(SImage& image, MemChunk& data, int index)
{
// Get info
SImage::info_t info = getInfo(data, index);
// Create image from data
image.create(info.width, info.height, PALMASK);
data.read(imageData(image), info.width * info.height, 0);
image.fillAlpha(255);
return true;
}
bool ResArchive::isResArchive(MemChunk& mc, size_t& dir_offset, size_t& num_lumps)
{
// Check size
if (mc.getSize() < 12)
return false;
// Check for "Res!" header
if (!(mc[0] == 'R' && mc[1] == 'e' && mc[2] == 's' && mc[3] == '!'))
return false;
// Get number of lumps and directory offset
uint32_t offset_offset = 0;
uint32_t rel_offset = 0;
uint32_t dir_size = 0;
mc.seek(4, SEEK_SET);
mc.read(&dir_offset, 4);
mc.read(&dir_size, 4);
// Byteswap values for big endian if needed
dir_size = wxINT32_SWAP_ON_BE(dir_size);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset);
// A&A contains nested resource files. The offsets are then always relative to
// the top-level file. This causes problem with the embedded archive system
// used by SLADE3. The solution is to compute the offset offset. :)
offset_offset = dir_offset - (mc.getSize() - dir_size);
rel_offset = dir_offset - offset_offset;
// Check directory offset and size are both decent
if (dir_size % RESDIRENTRYSIZE || (rel_offset + dir_size) > mc.getSize())
return false;
num_lumps = dir_size / RESDIRENTRYSIZE;
// Reset MemChunk (just in case)
mc.seek(0, SEEK_SET);
// If it's passed to here it's probably a res file
return true;
}
// -----------------------------------------------------------------------------
// Checks if the given data is a valid Duke Nukem 3D grp archive
// -----------------------------------------------------------------------------
bool GrpArchive::isGrpArchive(MemChunk& mc)
{
// Check size
if (mc.size() < 16)
return false;
// Get number of lumps
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::From8BitData(ken_magic), "KenSilverman")))
return false;
// Compute total size
uint32_t totalsize = (1 + num_lumps) * 16;
uint32_t size = 0;
for (uint32_t a = 0; a < num_lumps; ++a)
{
mc.read(ken_magic, 12);
mc.read(&size, 4);
totalsize += size;
}
// Check if total size is correct
if (totalsize > mc.size())
return false;
// If it's passed to here it's probably a grp file
return true;
}
/* LfdArchive::isLfdArchive
* Checks if the given data is a valid Dark Forces lfd archive
*******************************************************************/
bool LfdArchive::isLfdArchive(MemChunk& mc)
{
// Check size
if (mc.getSize() < 12)
return false;
// Check magic header
if (mc[0] != 'R' || mc[1] != 'M' || mc[2] != 'A' || mc[3] != 'P')
return false;
// Get offset of first entry
uint32_t dir_offset = 0;
mc.seek(12, SEEK_SET);
mc.read(&dir_offset, 4);
dir_offset = wxINT32_SWAP_ON_BE(dir_offset) + 16;
if (dir_offset % 16) return false;
char type1[5]; char type2[5];
char name1[9]; char name2[9];
uint32_t len1; uint32_t len2;
mc.read(type1, 4); type1[4] = 0;
mc.read(name1, 8); name1[8] = 0;
mc.read(&len1, 4); len1 = wxINT32_SWAP_ON_BE(len1);
// Check size
if ((unsigned)mc.getSize() < (dir_offset + 16 + len1))
return false;
// Compare
mc.seek(dir_offset, SEEK_SET);
mc.read(type2, 4); type2[4] = 0;
mc.read(name2, 8); name2[8] = 0;
mc.read(&len2, 4); len2 = wxINT32_SWAP_ON_BE(len2);
if (strcmp(type1, type2) || strcmp(name1, name2) || len1 != len2)
return false;
// If it's passed to here it's probably a lfd file
return true;
}
// -----------------------------------------------------------------------------
// Checks if the given data is a valid BZip2 archive
// -----------------------------------------------------------------------------
bool BZip2Archive::isBZip2Archive(MemChunk& mc)
{
size_t size = mc.size();
if (size < 14)
return false;
// Read header
uint8_t header[4];
mc.read(header, 4);
// Check for BZip2 header (reject BZip1 headers)
if (header[0] == 'B' && header[1] == 'Z' && header[2] == 'h' && (header[3] >= '1' && header[3] <= '9'))
return true;
return false;
}
// -----------------------------------------------------------------------------
// Reads bzip2 format data from a MemChunk
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool BZip2Archive::open(MemChunk& mc)
{
size_t size = mc.size();
if (size < 14)
return false;
// Read header
uint8_t header[4];
mc.read(header, 4);
// Check for BZip2 header (reject BZip1 headers)
if (!(header[0] == 'B' && header[1] == 'Z' && header[2] == 'h' && (header[3] >= '1' && header[3] <= '9')))
return false;
// Build name from filename
string name = filename(false);
wxFileName fn(name);
if (!fn.GetExt().CmpNoCase("tbz") || !fn.GetExt().CmpNoCase("tb2") || !fn.GetExt().CmpNoCase("tbz2"))
fn.SetExt("tar");
else if (!fn.GetExt().CmpNoCase("bz2"))
fn.ClearExt();
name = fn.GetFullName();
// Let's create the entry
setMuted(true);
auto entry = std::make_shared<ArchiveEntry>(name, size);
MemChunk xdata;
if (Compression::bzip2Decompress(mc, xdata))
{
entry->importMemChunk(xdata);
}
else
{
setMuted(false);
return false;
}
rootDir()->addEntry(entry);
EntryType::detectEntryType(entry.get());
entry->setState(ArchiveEntry::State::Unmodified);
setMuted(false);
setModified(false);
announce("opened");
// Finish
return true;
}
/* ZipArchive::isZipArchive
* Checks if the given data is a valid zip archive
*******************************************************************/
bool ZipArchive::isZipArchive(MemChunk& mc)
{
// Check size
if (mc.getSize() < sizeof(zip_file_header_t))
return false;
// Read first file header
zip_file_header_t header;
mc.seek(0, SEEK_SET);
mc.read(&header, sizeof(zip_file_header_t));
// Check header signature
if (header.sig != 0x04034b50)
return false;
// The zip format is horrendous, so this will do for checking
return true;
}
/* 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;
}
/* 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;
}
/* 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;
}
/* 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;
}
/* 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;
}
/* 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;
}
// -----------------------------------------------------------------------------
// Reads Chasm bin format data from a MemChunk
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool ChasmBinArchive::open(MemChunk& mc)
{
// Check given data is valid
if (mc.getSize() < HEADER_SIZE)
{
return false;
}
// Read .bin header and check it
char magic[4] = {};
mc.read(magic, sizeof magic);
if (magic[0] != 'C' || magic[1] != 'S' || magic[2] != 'i' || magic[3] != 'd')
{
LOG_MESSAGE(1, "ChasmBinArchive::open: Opening failed, invalid header");
Global::error = "Invalid Chasm bin header";
return false;
}
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
uint16_t num_entries = 0;
mc.read(&num_entries, sizeof num_entries);
num_entries = wxUINT16_SWAP_ON_BE(num_entries);
// Read the directory
UI::setSplashProgressMessage("Reading Chasm bin archive data");
for (uint16_t i = 0; i < num_entries; ++i)
{
// Update splash window progress
UI::setSplashProgress(static_cast<float>(i) / num_entries);
// Read entry info
char name[NAME_SIZE] = {};
mc.read(name, sizeof name);
uint32_t size;
mc.read(&size, sizeof size);
size = wxUINT32_SWAP_ON_BE(size);
uint32_t offset;
mc.read(&offset, sizeof offset);
offset = wxUINT32_SWAP_ON_BE(offset);
// Check offset+size
if (offset + size > mc.getSize())
{
LOG_MESSAGE(1, "ChasmBinArchive::open: Bin archive is invalid or corrupt (entry goes past end of file)");
Global::error = "Archive is invalid and/or corrupt";
setMuted(false);
return false;
}
// Convert Pascal to zero-terminated string
memmove(name, name + 1, sizeof name - 1);
name[sizeof name - 1] = '\0';
// Create entry
ArchiveEntry* const entry = new ArchiveEntry(name, size);
entry->exProp("Offset") = static_cast<int>(offset);
entry->setLoaded(false);
entry->setState(0);
rootDir()->addEntry(entry);
}
// Detect all entry types
UI::setSplashProgressMessage("Detecting entry types");
vector<ArchiveEntry*> all_entries;
getEntryTreeAsList(all_entries);
MemChunk edata;
for (size_t i = 0; i < all_entries.size(); ++i)
{
// Update splash window progress
UI::setSplashProgress(static_cast<float>(i) / num_entries);
// Get entry
ArchiveEntry* const entry = all_entries[i];
// Read entry data if it isn't zero-sized
if (entry->getSize() > 0)
{
// Read the entry data
mc.exportMemChunk(edata, static_cast<int>(entry->exProp("Offset")), entry->getSize());
entry->importMemChunk(edata);
}
// Detect entry type
EntryType::detectEntryType(entry);
fixBrokenWave(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;
}
/* 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;
}
