// -----------------------------------------------------------------------------
// 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 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'))
{
Log::error("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);
UI::setSplashProgressMessage("Reading wad 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
Wad2Entry 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.size())
{
Log::error("Wad2Archive::open: Wad2 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(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(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, (int)entry->exProp("Offset"), 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);
}
// Detect maps (will detect map entry types)
UI::setSplashProgressMessage("Detecting maps");
detectMaps();
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
UI::setSplashProgressMessage("");
return true;
}
// -----------------------------------------------------------------------------
// Reads pod format data from a MemChunk
// Returns true if successful, false otherwise
// -----------------------------------------------------------------------------
bool PodArchive::open(MemChunk& mc)
{
// Check data was given
if (!mc.hasData())
return false;
// Read no. of files
mc.seek(0, 0);
uint32_t num_files;
mc.read(&num_files, 4);
// Read id
mc.read(id_, 80);
// Read directory
vector<FileEntry> files(num_files);
mc.read(files.data(), num_files * sizeof(FileEntry));
// Stop announcements (don't want to be announcing modification due to entries being added etc)
setMuted(true);
// Create entries
UI::setSplashProgressMessage("Reading pod archive data");
for (unsigned a = 0; a < num_files; a++)
{
// Get the entry name as a wxFileName (so we can break it up)
wxFileName fn(files[a].name);
// Create entry
auto new_entry = std::make_shared<ArchiveEntry>(fn.GetFullName(), files[a].size);
new_entry->exProp("Offset") = files[a].offset;
new_entry->setLoaded(false);
// Add entry and directory to directory tree
string path = fn.GetPath(false);
auto ndir = createDir(path);
ndir->addEntry(new_entry);
new_entry->setState(ArchiveEntry::State::Unmodified);
LOG_MESSAGE(5, "File size: %d, offset: %d, name: %s", files[a].size, files[a].offset, files[a].name);
}
// Detect entry types
vector<ArchiveEntry*> all_entries;
putEntryTreeAsList(all_entries);
UI::setSplashProgressMessage("Detecting entry types");
for (unsigned a = 0; a < all_entries.size(); a++)
{
// Skip dir/marker
if (all_entries[a]->size() == 0 || all_entries[a]->type() == EntryType::folderType())
{
all_entries[a]->setState(ArchiveEntry::State::Unmodified);
continue;
}
// Update splash window progress
UI::setSplashProgress((float)a / (float)all_entries.size());
// Read data
MemChunk edata;
mc.exportMemChunk(edata, all_entries[a]->exProp("Offset").intValue(), all_entries[a]->size());
all_entries[a]->importMemChunk(edata);
// Detect entry type
EntryType::detectEntryType(all_entries[a]);
// Unload entry data if needed
if (!archive_load_data)
all_entries[a]->unloadData();
// Set entry to unchanged
all_entries[a]->setState(ArchiveEntry::State::Unmodified);
LOG_MESSAGE(5, "entry %s size %d", CHR(all_entries[a]->name()), all_entries[a]->size());
}
// Setup variables
setMuted(false);
setModified(false);
announce("opened");
UI::setSplashProgressMessage("");
return true;
}
// -----------------------------------------------------------------------------
// 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.size() < 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.size() < (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
UI::setSplashProgressMessage("Reading lfd archive data");
size_t offset = dir_len + 16;
size_t size = mc.size();
for (uint32_t d = 0; offset < size; d++)
{
// Update splash window progress
UI::setSplashProgress(((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)
{
LOG_MESSAGE(1, "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);
auto nlump = std::make_shared<ArchiveEntry>(fn.GetFullName(), length);
nlump->setLoaded(false);
nlump->exProp("Offset") = (int)offset;
nlump->setState(ArchiveEntry::State::Unmodified);
// Add to entry list
rootDir()->addEntry(nlump);
// Move to next entry
offset += length;
mc.seek(offset, SEEK_SET);
}
if (num_lumps != numEntries())
LOG_MESSAGE(1, "Warning: computed %i lumps, but actually %i entries", num_lumps, numEntries());
// 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;
}
