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Initial version
Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
commit
fcfc8b0949
GPG key ID:
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11 changed files with 857 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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scs-extract
|
||||
202
LICENSE
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202
LICENSE
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|
|
@ -0,0 +1,202 @@
|
|||
Apache License
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|
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Copyright 2019- Knut Ahlers <knut@ahlers.me>
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25
README.md
Normal file
25
README.md
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
[](https://goreportcard.com/report/github.com/Luzifer/scs-extract)
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
# Luzifer / scs-extract
|
||||
|
||||
`scs-extract` is a Linux / MacOS CLI util to list / extract files from SCS archives used in Euro Truck Simulator 2 / American Truck Simulator.
|
||||
|
||||
## Usage
|
||||
|
||||
`scs-extract [options] <archive> [files to extract]`
|
||||
|
||||
```console
|
||||
# scs-extract ~/.steam/steam/steamapps/common/Euro\ Truck\ Simulator\ 2/def.scs def/economy_data.sii
|
||||
def/economy_data.sii
|
||||
|
||||
# scs-extract --help
|
||||
Usage of scs-extract:
|
||||
-d, --dest string Path prefix to use to extract files to (default ".")
|
||||
-x, --extract Extract files (if not given files are just listed)
|
||||
--log-level string Log level (debug, info, warn, error, fatal) (default "info")
|
||||
--version Prints current version and exits
|
||||
```
|
||||
7
b0rkhash/README.md
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7
b0rkhash/README.md
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
# DO NOT USE THIS!
|
||||
|
||||
This folder contains a broken implementation of the Google CityHash algorithm to access the SCS archive files of ETS2.
|
||||
|
||||
- It uses more constants than the original implementation
|
||||
- For file names with 8 characters length ALWAYS the same hash (K2) is returned
|
||||
- Multiple other derivations from the original C-implementation made by Google
|
||||
190
b0rkhash/hash.go
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190
b0rkhash/hash.go
Normal file
|
|
@ -0,0 +1,190 @@
|
|||
package b0rkhash
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
)
|
||||
|
||||
// Some primes between 2^63 and 2^64 for various uses.
|
||||
const (
|
||||
k0 uint64 = 0xc3a5c85c97cb3127
|
||||
k1 uint64 = 0xb492b66fbe98f273
|
||||
k2 uint64 = 0x9ae16a3b2f90404f
|
||||
k3 uint64 = 0xc949d7c7509e6557
|
||||
)
|
||||
|
||||
func fetch32(p []byte) uint32 {
|
||||
return binary.LittleEndian.Uint32(p)
|
||||
}
|
||||
|
||||
func fetch64(p []byte) uint64 {
|
||||
r := binary.LittleEndian.Uint64(p)
|
||||
return r
|
||||
}
|
||||
|
||||
// Bitwise right rotate
|
||||
func rotate(val uint64, shift uint) uint64 {
|
||||
// Avoid shifting by 64: doing so yields an undefined result.
|
||||
if shift == 0 {
|
||||
return val
|
||||
}
|
||||
return (val >> shift) | val<<(64-shift)
|
||||
}
|
||||
|
||||
func rotateByAtleast1(val uint64, shift uint) uint64 {
|
||||
return (val >> shift) | (val << (64 - shift))
|
||||
}
|
||||
|
||||
func shiftMix(val uint64) uint64 {
|
||||
return val ^ (val >> 47)
|
||||
}
|
||||
|
||||
func hash128to64(x Uint128) uint64 {
|
||||
const mul = uint64(0x9ddfea08eb382d69)
|
||||
a := (x.Low64() ^ x.High64()) * mul
|
||||
a ^= (a >> 47)
|
||||
b := (x.High64() ^ a) * mul
|
||||
b ^= (b >> 47)
|
||||
b *= mul
|
||||
return b
|
||||
}
|
||||
|
||||
func hashLen16(u, v uint64) uint64 {
|
||||
return hash128to64(Uint128{u, v})
|
||||
}
|
||||
|
||||
func hashLen0to16(s []byte, length int) uint64 {
|
||||
if length > 8 {
|
||||
a := fetch64(s)
|
||||
b := fetch64(s[length-8:])
|
||||
return hashLen16(a, rotateByAtleast1(b+uint64(length), uint(length))) ^ b
|
||||
}
|
||||
|
||||
if length >= 4 {
|
||||
a := uint64(fetch32(s))
|
||||
return hashLen16(uint64(length)+(a<<3), uint64(fetch32(s[length-4:])))
|
||||
}
|
||||
|
||||
if length > 0 {
|
||||
a := uint8(s[0])
|
||||
b := uint8(s[length>>1])
|
||||
c := uint8(s[length-1])
|
||||
y := uint32(a) + (uint32(b) << 8)
|
||||
z := uint32(length) + (uint32(c) << 2)
|
||||
return shiftMix(uint64(y)*k2^uint64(z)*k3) * k2
|
||||
}
|
||||
|
||||
return k2
|
||||
}
|
||||
|
||||
// This probably works well for 16-byte strings as well, but is may be overkill
|
||||
// in that case
|
||||
func hashLen17to32(s []byte, length int) uint64 {
|
||||
a := fetch64(s) * k1
|
||||
b := fetch64(s[8:])
|
||||
c := fetch64(s[length-8:]) * k2
|
||||
d := fetch64(s[length-16:]) * k0
|
||||
return hashLen16(rotate(a-b, 43)+rotate(c, 30)+d,
|
||||
a+rotate(b^k3, 20)-c+uint64(length))
|
||||
}
|
||||
|
||||
// Return a 16-byte hash for 48 bytes. Quick and dirty.
|
||||
// callers do best to use "random-looking" values for a and b.
|
||||
func weakHashLen32WithSeeds(w, x, y, z, a, b uint64) Uint128 {
|
||||
a += w
|
||||
b = rotate(b+a+z, 21)
|
||||
c := a
|
||||
a += x
|
||||
a += y
|
||||
b += rotate(a, 44)
|
||||
return Uint128{a + z, b + c}
|
||||
}
|
||||
|
||||
// Return a 16-byte hash for s[0] ... s[31], a, and b. Quick and dirty.
|
||||
func weakHashLen32WithSeedsByte(s []byte, a, b uint64) Uint128 {
|
||||
return weakHashLen32WithSeeds(
|
||||
fetch64(s),
|
||||
fetch64(s[8:]),
|
||||
fetch64(s[16:]),
|
||||
fetch64(s[24:]),
|
||||
a,
|
||||
b)
|
||||
}
|
||||
|
||||
// Return an 8-byte hash for 33 to 64 bytes.
|
||||
func hashLen33to64(s []byte, length int) uint64 {
|
||||
z := fetch64(s[24:])
|
||||
a := fetch64(s) + (uint64(length)+fetch64(s[length-16:]))*k0
|
||||
b := rotate(a+z, 52)
|
||||
c := rotate(a, 37)
|
||||
a += fetch64(s[8:])
|
||||
c += rotate(a, 7)
|
||||
a += fetch64(s[16:])
|
||||
vf := a + z
|
||||
vs := b + rotate(a, 31) + c
|
||||
a = fetch64(s[16:]) + fetch64(s[length-32:])
|
||||
z = fetch64(s[length-8:])
|
||||
b = rotate(a+z, 52)
|
||||
c = rotate(a, 37)
|
||||
a += fetch64(s[length-24:])
|
||||
c += rotate(a, 7)
|
||||
a += fetch64(s[length-16:])
|
||||
wf := a + z
|
||||
ws := b + rotate(a, 31) + c
|
||||
r := shiftMix((vf+ws)*k2 + (wf+vs)*k0)
|
||||
return shiftMix(r*k0+vs) * k2
|
||||
}
|
||||
|
||||
// CityHash64 return a 64-bit hash.
|
||||
func CityHash64(s []byte) uint64 {
|
||||
length := len(s)
|
||||
if length <= 32 {
|
||||
if length <= 16 {
|
||||
return hashLen0to16(s, length)
|
||||
}
|
||||
return hashLen17to32(s, length)
|
||||
} else if length <= 64 {
|
||||
return hashLen33to64(s, length)
|
||||
}
|
||||
|
||||
// For string over 64 bytes we hash the end first, and then as we
|
||||
// loop we keep 56 bytes of state: v, w, x, y and z.
|
||||
x := fetch64(s[length-40:])
|
||||
y := fetch64(s[length-16:]) + fetch64(s[length-56:])
|
||||
z := hashLen16(fetch64(s[length-48:])+uint64(length), fetch64(s[length-24:]))
|
||||
v := weakHashLen32WithSeedsByte(s[length-64:], uint64(length), z)
|
||||
w := weakHashLen32WithSeedsByte(s[length-32:], y+k1, x)
|
||||
x = x*k1 + fetch64(s)
|
||||
|
||||
// Decrease len to the nearest multiple of 64, and operate on 64-byte chunks.
|
||||
tmpLength := uint32(length)
|
||||
tmpLength = uint32(tmpLength-1) & ^uint32(63)
|
||||
for {
|
||||
x = rotate(x+y+v.Low64()+fetch64(s[8:]), 37) * k1
|
||||
y = rotate(y+v.High64()+fetch64(s[48:]), 42) * k1
|
||||
x ^= w.High64()
|
||||
y += v.Low64() + fetch64(s[40:])
|
||||
z = rotate(z+w.Low64(), 33) * k1
|
||||
v = weakHashLen32WithSeedsByte(s, v.High64()*k1, x+w.Low64())
|
||||
w = weakHashLen32WithSeedsByte(s[32:], z+w.High64(), y+fetch64(s[16:]))
|
||||
z, x = x, z
|
||||
s = s[64:]
|
||||
tmpLength -= 64
|
||||
if tmpLength == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return hashLen16(
|
||||
hashLen16(v.Low64(), w.Low64())+shiftMix(y)*k1+z,
|
||||
hashLen16(v.High64(), w.High64())+x)
|
||||
}
|
||||
|
||||
// CityHash64WithSeed return a 64-bit hash with a seed.
|
||||
func CityHash64WithSeed(s []byte, seed uint64) uint64 {
|
||||
return CityHash64WithSeeds(s, k2, seed)
|
||||
}
|
||||
|
||||
// CityHash64WithSeeds return a 64-bit hash with two seeds.
|
||||
func CityHash64WithSeeds(s []byte, seed0, seed1 uint64) uint64 {
|
||||
return hashLen16(CityHash64(s)-seed0, seed1)
|
||||
}
|
||||
23
b0rkhash/hash_test.go
Normal file
23
b0rkhash/hash_test.go
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
package b0rkhash
|
||||
|
||||
import "testing"
|
||||
|
||||
func TestCityHash64(t *testing.T) {
|
||||
for input, expect := range map[string]uint64{
|
||||
``: 0x9AE16A3B2F90404F,
|
||||
`custom/city.sii`: 0x1ffe051698fba3e2,
|
||||
`def`: 0x2C6F469EFB31C45A,
|
||||
`def/camera/city_start/actions.sii`: 0xa74e0b70addb8e2d,
|
||||
`def/city`: 0x5e1b1d2c928270d1, // This is a definitive bug but also exists in SCS implementation
|
||||
`def/economy_data.sii`: 0xce3123f8a189862e,
|
||||
`def/map_data.sii`: 0x73aded9d5c6b4762,
|
||||
`def/bank_data.sii`: 0xdb6507b90c06f96a,
|
||||
} {
|
||||
h := CityHash64([]byte(input))
|
||||
if h != expect {
|
||||
t.Errorf("Unexpected hash for input %q: expect=0x%x result=0x%x", input, expect, h)
|
||||
} else {
|
||||
t.Logf("Success for input %q: expect=0x%x result=0x%x", input, expect, h)
|
||||
}
|
||||
}
|
||||
}
|
||||
14
b0rkhash/uint128.go
Normal file
14
b0rkhash/uint128.go
Normal file
|
|
@ -0,0 +1,14 @@
|
|||
package b0rkhash
|
||||
|
||||
// Uint128 type uint128
|
||||
type Uint128 [2]uint64
|
||||
|
||||
// Low64 return the low 64-bit of u.
|
||||
func (u Uint128) Low64() uint64 {
|
||||
return u[0]
|
||||
}
|
||||
|
||||
// High64 return the high 64-bit of u.
|
||||
func (u Uint128) High64() uint64 {
|
||||
return u[1]
|
||||
}
|
||||
13
go.mod
Normal file
13
go.mod
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
module github.com/Luzifer/scs-extract
|
||||
|
||||
go 1.13
|
||||
|
||||
require (
|
||||
github.com/Luzifer/go_helpers/v2 v2.9.1
|
||||
github.com/Luzifer/rconfig/v2 v2.2.1
|
||||
github.com/onsi/ginkgo v1.10.2 // indirect
|
||||
github.com/onsi/gomega v1.7.0 // indirect
|
||||
github.com/pkg/errors v0.8.1
|
||||
github.com/sirupsen/logrus v1.4.2
|
||||
github.com/tenfyzhong/cityhash v0.0.0-20181130044406-4c2731b5918c
|
||||
)
|
||||
52
go.sum
Normal file
52
go.sum
Normal file
|
|
@ -0,0 +1,52 @@
|
|||
github.com/Luzifer/go_helpers v2.8.1+incompatible h1:9YvrAn7pU2viK5vRpAnI+0gyz+Tw8rxWHVIYHi642zk=
|
||||
github.com/Luzifer/go_helpers/v2 v2.9.1 h1:MVUOlD6tJ2m/iTF0hllnI/QVZH5kI+TikUm1WRGg/c4=
|
||||
github.com/Luzifer/go_helpers/v2 v2.9.1/go.mod h1:ZnWxPjyCdQ4rZP3kNiMSUW/7FigU1X9Rz8XopdJ5ZCU=
|
||||
github.com/Luzifer/rconfig v2.2.0+incompatible h1:Kle3+rshPM7LxciOheaR4EfHUzibkDDGws04sefQ5m8=
|
||||
github.com/Luzifer/rconfig/v2 v2.2.1 h1:zcDdLQlnlzwcBJ8E0WFzOkQE1pCMn3EbX0dFYkeTczg=
|
||||
github.com/Luzifer/rconfig/v2 v2.2.1/go.mod h1:OKIX0/JRZrPJ/ZXXWklQEFXA6tBfWaljZbW37w+sqBw=
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
|
||||
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
|
||||
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
|
||||
github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf/go.mod h1:hyb9oH7vZsitZCiBt0ZvifOrB+qc8PS5IiilCIb87rg=
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
|
||||
github.com/leekchan/gtf v0.0.0-20190214083521-5fba33c5b00b/go.mod h1:thNruaSwydMhkQ8dXzapABF9Sc1Tz08ZBcDdgott9RA=
|
||||
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
|
||||
github.com/onsi/ginkgo v1.10.2 h1:uqH7bpe+ERSiDa34FDOF7RikN6RzXgduUF8yarlZp94=
|
||||
github.com/onsi/ginkgo v1.10.2/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
|
||||
github.com/onsi/gomega v1.7.0 h1:XPnZz8VVBHjVsy1vzJmRwIcSwiUO+JFfrv/xGiigmME=
|
||||
github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
|
||||
github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
|
||||
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
|
||||
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
|
||||
github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
|
||||
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
|
||||
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
|
||||
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||
github.com/tenfyzhong/cityhash v0.0.0-20181130044406-4c2731b5918c h1:Y3PUeYj+OuuOy7BnbIvtGOj9YDKjPHsZyN/2AJqN32s=
|
||||
github.com/tenfyzhong/cityhash v0.0.0-20181130044406-4c2731b5918c/go.mod h1:Izvvi9mFtnF9nbPc2Z/gazIliNnYtxOsbQnFYpmxbfc=
|
||||
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
|
||||
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
|
||||
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
|
||||
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
|
||||
gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19 h1:WB265cn5OpO+hK3pikC9hpP1zI/KTwmyMFKloW9eOVc=
|
||||
gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
|
||||
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
132
main.go
Normal file
132
main.go
Normal file
|
|
@ -0,0 +1,132 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path"
|
||||
|
||||
"github.com/Luzifer/go_helpers/v2/str"
|
||||
"github.com/Luzifer/rconfig/v2"
|
||||
"github.com/Luzifer/scs-extract/scs"
|
||||
log "github.com/sirupsen/logrus"
|
||||
)
|
||||
|
||||
var (
|
||||
cfg = struct {
|
||||
Dest string `flag:"dest,d" default:"." description:"Path prefix to use to extract files to"`
|
||||
Extract bool `flag:"extract,x" default:"false" description:"Extract files (if not given files are just listed)"`
|
||||
LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
|
||||
VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
|
||||
}{}
|
||||
|
||||
version = "dev"
|
||||
)
|
||||
|
||||
func init() {
|
||||
if err := rconfig.ParseAndValidate(&cfg); err != nil {
|
||||
log.Fatalf("Unable to parse commandline options: %s", err)
|
||||
}
|
||||
|
||||
if cfg.VersionAndExit {
|
||||
fmt.Printf("scs-extract %s\n", version)
|
||||
os.Exit(0)
|
||||
}
|
||||
|
||||
if l, err := log.ParseLevel(cfg.LogLevel); err != nil {
|
||||
log.WithError(err).Fatal("Unable to parse log level")
|
||||
} else {
|
||||
log.SetLevel(l)
|
||||
}
|
||||
}
|
||||
|
||||
func main() {
|
||||
var (
|
||||
archive string
|
||||
extract []string
|
||||
)
|
||||
|
||||
switch len(rconfig.Args()) {
|
||||
case 1:
|
||||
// No positional arguments
|
||||
log.Fatal("No SCS archive given")
|
||||
|
||||
case 2:
|
||||
archive = rconfig.Args()[1]
|
||||
|
||||
default:
|
||||
archive = rconfig.Args()[1]
|
||||
extract = rconfig.Args()[2:]
|
||||
}
|
||||
|
||||
f, err := os.Open(archive)
|
||||
if err != nil {
|
||||
log.WithError(err).Fatal("Unable to open input file")
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
r, err := scs.NewReader(f, 0)
|
||||
if err != nil {
|
||||
log.WithError(err).Fatal("Unable to read SCS file headers")
|
||||
}
|
||||
|
||||
log.WithField("no_files", len(r.Files)).Debug("Opened archive")
|
||||
|
||||
destInfo, err := os.Stat(cfg.Dest)
|
||||
if err != nil {
|
||||
if !os.IsNotExist(err) {
|
||||
log.WithError(err).Fatal("Unable to access destination")
|
||||
}
|
||||
|
||||
if err := os.MkdirAll(cfg.Dest, 0755); err != nil {
|
||||
log.WithError(err).Fatal("Unable to create destination directory")
|
||||
}
|
||||
}
|
||||
|
||||
if destInfo != nil && !destInfo.IsDir() {
|
||||
log.Fatal("Destination exists and is no directory")
|
||||
}
|
||||
|
||||
for _, file := range r.Files {
|
||||
if !str.StringInSlice(file.Name, extract) && len(extract) > 0 {
|
||||
// Files to extract are given but this is not mentioned
|
||||
continue
|
||||
}
|
||||
|
||||
if file.Type == scs.EntryTypeCompressedNames || file.Type == scs.EntryTypeCompressedNamesCopy ||
|
||||
file.Type == scs.EntryTypeUncompressedNames || file.Type == scs.EntryTypeUncompressedNamesCopy {
|
||||
// Don't care about directories, if they contain files they will be created
|
||||
continue
|
||||
}
|
||||
|
||||
if !cfg.Extract {
|
||||
// Not asked to extract, do not extract
|
||||
fmt.Println(file.Name)
|
||||
continue
|
||||
}
|
||||
|
||||
destPath := path.Join(cfg.Dest, file.Name)
|
||||
if err := os.MkdirAll(path.Dir(destPath), 0755); err != nil {
|
||||
log.WithError(err).Fatal("Unable to create directory")
|
||||
}
|
||||
|
||||
src, err := file.Open()
|
||||
if err != nil {
|
||||
log.WithError(err).Fatal("Unable to open file from archive")
|
||||
}
|
||||
|
||||
dest, err := os.Create(destPath)
|
||||
if err != nil {
|
||||
log.WithError(err).Fatal("Unable to create destination file")
|
||||
}
|
||||
|
||||
if _, err = io.Copy(dest, src); err != nil {
|
||||
log.WithError(err).Fatal("Unable to write file contents")
|
||||
}
|
||||
|
||||
dest.Close()
|
||||
src.Close()
|
||||
|
||||
log.WithField("file", file.Name).Info("File extracted")
|
||||
}
|
||||
}
|
||||
198
scs/scs.go
Normal file
198
scs/scs.go
Normal file
|
|
@ -0,0 +1,198 @@
|
|||
package scs
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"compress/flate"
|
||||
"encoding/binary"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"path"
|
||||
"reflect"
|
||||
"strings"
|
||||
|
||||
"github.com/Luzifer/scs-extract/b0rkhash"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
var rootPathHash = b0rkhash.CityHash64([]byte(""))
|
||||
|
||||
type CatalogEntry struct {
|
||||
HashedPath uint64
|
||||
Offset int32
|
||||
_ int32
|
||||
Type EntryType
|
||||
CRC uint32
|
||||
Size int32
|
||||
ZSize int32
|
||||
}
|
||||
|
||||
type EntryType int32
|
||||
|
||||
// See https://forum.scssoft.com/viewtopic.php?p=644638#p644638
|
||||
const (
|
||||
EntryTypeUncompressedFile EntryType = iota
|
||||
EntryTypeUncompressedNames
|
||||
EntryTypeCompressedFile
|
||||
EntryTypeCompressedNames
|
||||
EntryTypeUncompressedFileCopy
|
||||
EntryTypeUncompressedNamesCopy
|
||||
EntryTypeCompressedFileCopy
|
||||
EntryTypeCompressedNamesCopy
|
||||
)
|
||||
|
||||
type File struct {
|
||||
Name string
|
||||
|
||||
archiveReader io.ReaderAt
|
||||
|
||||
CatalogEntry
|
||||
}
|
||||
|
||||
func (f *File) Open() (io.ReadCloser, error) {
|
||||
var rc io.ReadCloser
|
||||
|
||||
switch f.Type {
|
||||
|
||||
case EntryTypeCompressedFile, EntryTypeCompressedFileCopy, EntryTypeCompressedNames, EntryTypeCompressedNamesCopy:
|
||||
r := io.NewSectionReader(f.archiveReader, int64(f.Offset+2), int64(f.ZSize))
|
||||
rc = flate.NewReader(r)
|
||||
|
||||
case EntryTypeUncompressedFile, EntryTypeUncompressedFileCopy, EntryTypeUncompressedNames, EntryTypeUncompressedNamesCopy:
|
||||
r := io.NewSectionReader(f.archiveReader, int64(f.Offset), int64(f.Size))
|
||||
rc = ioutil.NopCloser(r)
|
||||
|
||||
}
|
||||
return rc, nil
|
||||
}
|
||||
|
||||
type Reader struct {
|
||||
Files []*File
|
||||
}
|
||||
|
||||
func NewReader(r io.ReaderAt, size int64) (*Reader, error) {
|
||||
var magic = make([]byte, 4)
|
||||
n, err := r.ReadAt(magic, 0)
|
||||
if err != nil || n != 4 {
|
||||
return nil, errors.Wrap(err, "Unable to read file magic")
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(magic, []byte{0x53, 0x43, 0x53, 0x23}) {
|
||||
return nil, errors.New("Did not receive expected file magic")
|
||||
}
|
||||
|
||||
var entries = make([]byte, 4)
|
||||
n, err = r.ReadAt(entries, 0xC)
|
||||
if err != nil || n != 4 {
|
||||
return nil, errors.Wrap(err, "Unable to read entry count")
|
||||
}
|
||||
|
||||
var entryCount int32
|
||||
if err = binary.Read(bytes.NewReader(entries), binary.LittleEndian, &entryCount); err != nil {
|
||||
return nil, errors.Wrap(err, "Unable to parse entry count")
|
||||
}
|
||||
|
||||
out := &Reader{}
|
||||
|
||||
var offset int64 = 0x1000
|
||||
for i := int32(0); i < entryCount; i++ {
|
||||
var hdr = make([]byte, 32)
|
||||
n, err = r.ReadAt(hdr, offset)
|
||||
if err != nil || n != 32 {
|
||||
return nil, errors.Wrap(err, "Unable to read file header")
|
||||
}
|
||||
|
||||
var e = CatalogEntry{}
|
||||
if err = binary.Read(bytes.NewReader(hdr), binary.LittleEndian, &e); err != nil {
|
||||
return nil, errors.Wrap(err, "Unable to parse file header")
|
||||
}
|
||||
|
||||
out.Files = append(out.Files, &File{
|
||||
CatalogEntry: e,
|
||||
archiveReader: r,
|
||||
})
|
||||
offset += 32
|
||||
}
|
||||
|
||||
return out, out.populateFileNames()
|
||||
}
|
||||
|
||||
func (r *Reader) populateFileNames() error {
|
||||
// first seek root entry, without the archive is not usable for us
|
||||
var entry *File
|
||||
for _, e := range r.Files {
|
||||
if e.HashedPath == rootPathHash {
|
||||
entry = e
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if entry == nil ||
|
||||
(entry.ZSize == 0 && entry.Size == 0) ||
|
||||
(entry.Type != EntryTypeCompressedNames &&
|
||||
entry.Type != EntryTypeCompressedNamesCopy &&
|
||||
entry.Type != EntryTypeUncompressedNames &&
|
||||
entry.Type != EntryTypeUncompressedNamesCopy) {
|
||||
return errors.New("No root path entry found or root path empty")
|
||||
}
|
||||
|
||||
entry.Name = ""
|
||||
|
||||
return r.populateFileTree(entry)
|
||||
}
|
||||
|
||||
func (r *Reader) populateFileTree(node *File) error {
|
||||
f, err := node.Open()
|
||||
if err != nil {
|
||||
return errors.Wrap(err, "Unable to open file")
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
var entries []string
|
||||
|
||||
scanner := bufio.NewScanner(f)
|
||||
for scanner.Scan() {
|
||||
entries = append(entries, scanner.Text())
|
||||
}
|
||||
|
||||
if err := scanner.Err(); err != nil {
|
||||
return errors.Wrap(err, "Unable to read from file")
|
||||
}
|
||||
|
||||
for _, entry := range entries {
|
||||
var (
|
||||
hash uint64
|
||||
recurse bool
|
||||
)
|
||||
|
||||
if entry[0] == '*' {
|
||||
// Directory here
|
||||
recurse = true
|
||||
entry = entry[1:]
|
||||
}
|
||||
|
||||
hash = b0rkhash.CityHash64([]byte(strings.TrimPrefix(path.Join(node.Name, entry), "/")))
|
||||
|
||||
var next *File
|
||||
for _, rf := range r.Files {
|
||||
if rf.HashedPath == hash {
|
||||
next = rf
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if next == nil {
|
||||
return errors.Errorf("Found missing reference: %s", path.Join(node.Name, entry))
|
||||
}
|
||||
|
||||
next.Name = strings.TrimPrefix(path.Join(node.Name, entry), "/")
|
||||
if recurse {
|
||||
if err = r.populateFileTree(next); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
Loading…
Reference in a new issue