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local makepfs_sig = {
0x4d, 0x61, 0x6b, 0x65, 0x50, 0x66, 0x73, 0x20,
0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x31,
0x2e, 0x32, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
}
function load_psp_index(cdutil)
local pspval1_ent = cdutil:findpath "/PSP_GAME/USRDIR/PSPVAL1.PFS"
if not pspval1_ent then error "VP-PSP iso seems wrong..." end
local pspval1 = cdutil:cdfile(pspval1_ent)
for k, v in ipairs(makepfs_sig) do
if pspval1:readU8() ~= v then error "Wrong MakePfs signature." end
end
num_entries = pspval1:readU32()
num_files = num_entries
local idx_pos = pspval1:readU32()
local index = {}
pspval1:seek(2048 * idx_pos + 4)
local last_sector = 1
for i = 1, num_entries - 1 do
local sector = pspval1:readU32()
local abssector = pspval1_ent.Sector + sector
index[i] = { sector = abssector, cd = cdutil }
if i ~= 1 then
index[i - 1].size = sector - last_sector
end
last_sector = sector
end
index[num_entries - 1].size = idx_pos - last_sector
for i = 1, num_entries - 1 do
if index[i].size == 0 then index[i] = nil else log("Entry " .. i .. ", sector " .. index[i].sector .. ", nsectors = " .. index[i].size) end
end
return index
end
function load_index(cdutil)
if got_psp then return load_psp_index(cdutil) end
local vp_sec, cfat, csiz, fat, siz, fkey, skey, fkey_pos, skey_pos
vp_sec = 150
cfat = cdutil:cdfile(vp_sec, num_entries * 4)
csiz = cdutil:cdfile(vp_sec + num_entries * 4 / 2048, num_entries)
fat = Buffer(true)
siz = Buffer(true)
fkey = Buffer(true)
skey = Buffer(true)
cfat:seek(num_entries * 4 - fkey_size)
csiz:seek(num_entries - skey_size)
fkey:copyfrom(cfat, fkey_size)
skey:copyfrom(csiz, skey_size)
cfat:seek(0)
csiz:seek(0)
fkey_pos = 0
skey_pos = 0
print "Decrypting index..."
for i = 0, (num_entries * 4 - 1) do
fat:writeU8(xorB(cfat:readU8(), fkey:readU8()))
fkey_pos = fkey_pos + 1
if fkey_pos == fkey_size then
fkey_pos = 0
fkey:seek(0)
end
end
for i = 0, (num_entries - 1) do
siz:writeU8(xorB(csiz:readU8(), skey:readU8()))
skey_pos = skey_pos + 1
if skey_pos == skey_size then
skey_pos = 0
skey:seek(0)
end
end
cfat:destroy()
csiz:destroy()
fkey:seek(0)
skey:seek(0)
print "Done."
local o, m, s, f, size_high, size
local fr = fat:readU32()
local sr = siz:readU8()
local index = {}
for i = 1, (num_entries - 1) do
m = fat:readU8()
s = fat:readU8()
f = fat:readU8()
size_high = fat:readU8()
sector = from_MSF(m, s, f)
size = siz:readU8() + size_high * 256
if (sector ~= 4294967146) then
log("Entry " .. i .. ", sector " .. sector .. ", nsectors = " .. size)
index[i] = { sector = sector, size = size, cd = cdutil }
end
end
fat:destroy()
siz:destroy()
return index, fkey, skey, fr, sr
end
function add_file(cindex, iso, file, i)
local size_full = math.ceil(file:getsize() / 2048)
local dest_sector = iso:putfile(file)
local _, m, s, f = to_MSF(dest_sector)
local size_high = math.floor(size_full / 256)
local size = size_full - size_high * 256
log("Putting file " .. i .. " at " .. dest_sector .. " - size = " .. size_full)
cindex.fat:wseek(i * 4)
cindex.siz:wseek(i)
cindex.fat:writeU8(m)
cindex.fat:writeU8(s)
cindex.fat:writeU8(f)
cindex.fat:writeU8(size_high)
cindex.siz:writeU8(size)
end
function close_index(cindex, iso)
for i = cindex.fat:getsize(), (num_entries * 4 - 1) do
cindex.fat:writeU8(0)
end
for i = cindex.siz:getsize(), (num_entries - 1) do
cindex.siz:writeU8(0)
end
local fkey_pos = 0
local skey_pos = 0
local cfat = Buffer(true)
local csiz = Buffer(true)
cindex.fat:seek(0)
cindex.siz:seek(0)
cindex.fkey:seek(0)
cindex.skey:seek(0)
for i = 0, (num_entries * 4 - 1) do
cfat:writeU8(xorB(cindex.fat:readU8(), cindex.fkey:readU8()))
fkey_pos = fkey_pos + 1
if fkey_pos == fkey_size then
fkey_pos = 0
cindex.fkey:seek(0)
end
end
for i = 0, (num_entries - 1) do
csiz:writeU8(xorB(cindex.siz:readU8(), cindex.skey:readU8()))
skey_pos = skey_pos + 1
if skey_pos == skey_size then
skey_pos = 0
cindex.skey:seek(0)
end
end
iso:putfile(cfat, -1, 150)
iso:putfile(csiz, -1, 160)
cfat:destroy()
csiz:destroy()
end
function psp_add_file(cindex, iso, file, i)
local size_full = math.ceil(file:getsize() / 2048)
local dest_sector = iso:putfile(file)
cindex.index[i] = { size = size_fill, sector = dest_sector }
log("Putting file " .. i .. " at " .. dest_sector .. " - size = " .. size_full)
end
function copyfile(path, name, dirtree, iso, cdutil)
local dirent = cdutil:findpath(path .. "/" .. name)
if not dirent then error("Failing finding path " .. path .. "/" .. name) end
iso:createfile(dirtree, name, cdutil:cdfile(dirent), dirent):setbasicsxa()
end
function psp_close_index(cindex, iso, cdutil)
local index_sec = iso:getdispsect()
local indexfile = Buffer(true)
local indexhead = Buffer(true)
indexhead:write "MakePfs Version1.20"
indexhead:writeU8(0)
indexhead:writeU32(0)
indexhead:writeU32(0)
indexhead:writeU32(0)
indexhead:writeU32(num_files)
indexhead:writeU32(index_sec - pspval1_sec)
indexhead:writeU32(0)
for i = indexhead:getsize(), 2047 do
indexhead:writeU8(0x98)
end
iso:putfile(indexhead, -1, pspval1_sec)
indexfile:writeU32(1)
local last_entry = nil
for i = 1, num_files - 1 do
if cindex.index[i] then
last_entry = cindex.index[i].sector - pspval1_sec
indexfile:writeU32(last_entry)
else
indexfile:writeU32(last_entry)
end
end
local more_bytes = alignment(indexfile:getsize(), 2048)
for i = 1, more_bytes do
indexfile:writeU8(0x98)
end
iso:putfile(indexfile)
psp_dirtrees.PSPVAL1.size = (iso:getdispsect() - pspval1_sec) * 2048
indexfile:destroy()
indexhead:destroy()
local cp = function(path, name, dirtree) copyfile(path, name, dirtree, iso, cdutil) end
for _, f in ipairs { "Field_master.prx", "Camp_master.prx", "MiniMap_master.prx", "WldMap_master.prx", "GodCamp_master.prx", "moviepac.dat" } do
cp("/PSP_GAME/USRDIR", f, psp_dirtrees.USRDIR)
end
end
function prepare_index(iso, fkey, skey, fr, sr)
if got_psp then
return { add_file = psp_add_file, close_index = psp_close_index, index = { } }
end
local false_sect = {}
for i = 1, 13 do
iso:createsector(false_sect, MODE2_FORM1)
end
local ret = { fat = Buffer(true), siz = Buffer(true), fkey = fkey, skey = skey, add_file = add_file, close_index = close_index }
ret.fat:writeU32(fr)
ret.siz:writeU8(sr)
return ret
end
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