bobcat_proxy/
lib.rs

1#![no_std]
2
3use array_concat::concat_arrays;
4
5use bobcat_interfaces::selectors;
6
7type Address = [u8; 20];
8
9pub const fn make_minimal_proxy(addr: Address) -> [u8; 18 + 16 + 20] {
10    // I can't remember where this comes from (TODO), but we use this in
11    // 9lives for our share proxies.
12    concat_arrays!(
13        [
14            0x60, 0x2d, 0x5f, 0x81, 0x60, 0x09, 0x5f, 0x39, 0xf3, 0x5f, 0x5f, 0x36, 0x5f, 0x5f,
15            0x37, 0x36, 0x5f, 0x73,
16        ],
17        addr,
18        [
19            0x5a, 0xf4, 0x3d, 0x5f, 0x5f, 0x3e, 0x60, 0x29, 0x57, 0x3d, 0x5f, 0xfd, 0x5b, 0x3d,
20            0x5f, 0xf3,
21        ]
22    )
23}
24
25macro_rules! unpack_arr {
26    ($b:expr, $l:expr) => {
27        match const_hex::const_decode_to_array::<$l>($b) {
28            Ok(v) => v,
29            Err(_) => panic!("bad code"),
30        }
31    };
32}
33
34pub const SIZE_EIP1967: usize = 1 + 20 + 76;
35
36/// Make a EIP1967 proxy that reads from the standard storage slot.
37pub const fn make_eip1967_proxy(logic: Address) -> [u8; SIZE_EIP1967] {
38    // Created from eip1967.huff .
39    concat_arrays!(
40      [0x73],
41      logic,
42      unpack_arr!(
43          b"602060305f395f5155603a8060273d393df3365f5f375f5f365f7f360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc545af45f3d5f5f3e3d9161003857fd5bf3",
44          76
45      )
46    )
47}
48
49/// Make beacon proxy that calls "implementation()(address)" on a
50/// hardcoded beacon address to get the logic address to delegate to.
51pub const fn make_beacon_proxy(beacon: Address) -> [u8; 20 + 110] {
52    // Created from beacon-proxy.huff .
53    concat_arrays!(
54        unpack_arr!(
55            b"60408060093d393df3365f5f375f5f365f6020635c60da1b815280806004603c73",
56            33
57        ),
58        beacon,
59        unpack_arr!(b"5afa50515af45f3d5f5f3e3d9161003e57fd5bf3", 20)
60    )
61}
62
63pub const SIZE_UPGRADEABLE_BEACON_PROXY: usize = 1 + 20 + 123;
64
65/// Make a beacon proxy that loads from the beacon slot to get the
66/// "implementation()(address)" to get the logic address to delegate to,
67/// with the value initially set during the constructor.
68pub const fn make_upgradeable_beacon_proxy(beacon: Address) -> [u8; SIZE_UPGRADEABLE_BEACON_PROXY] {
69    // Created from beacon-proxy.huff .
70    concat_arrays!(
71        [0x73],
72        beacon,
73        unpack_arr!(
74            b"7fa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d5055604d8060403d393df3365f5f375f5f365f6020635c60da1b815280806004603c7fa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50545afa50515af45f3d5f5f3e3d9161004b57fd5bf3",
75            123
76        )
77    )
78}
79
80pub const SIZE_MULTI3_PROXY: usize = 46 + 20 + 7 + 20 + 7 + 20 + 6 + 20 + 21;
81
82pub const fn make_multi3_proxy(
83    one: Address,
84    two: Address,
85    three: Address,
86    all: Address,
87) -> [u8; SIZE_MULTI3_PROXY] {
88    // Created from multi3-proxy.huff .
89    concat_arrays!(
90        unpack_arr!(
91            b"609e8060093d393df3365f5f375f5f365f6002355f1a8060011461003d5780600214610058576003146100735773",
92            46
93        ),
94        all,
95        unpack_arr!(b"61008d565b5073", 7),
96        one,
97        unpack_arr!(b"61008d565b5073", 7),
98        two,
99        unpack_arr!(b"61008d565b73", 6),
100        three,
101        unpack_arr!(b"61008d565b5af45f3d5f5f3e3d9161009c57fd5bf3", 21)
102    )
103}
104
105pub const SIZE_BEACON_SEL_PROXY: usize = 24 + 4 + 12 + 20 + 30;
106
107/// Create a proxy that calls the selector on the beacon given
108/// to figure out where to delegatecall its calldata to.
109pub const fn make_beacon_sel_proxy_sel(
110    sel: [u8; 4],
111    beacon: Address,
112) -> [u8; SIZE_BEACON_SEL_PROXY] {
113    // Created from sel-beacon-proxy.huff .
114    concat_arrays!(
115        unpack_arr!(b"60518060093d393df3602460046020368282355f5f368663", 24),
116        sel,
117        unpack_arr!(b"5f52855f8937808a80601c73", 12),
118        beacon,
119        unpack_arr!(
120            b"5afa1561004f578951368a8c375af43d5f5f3e5f3d911561004f57f35bfd",
121            30
122        )
123    )
124}
125
126selectors! {
127    // Used by the beacon proxy to implement a fallback.
128    SEL_IMPLEMENTATION = b"implementation(bytes4)",
129    // Used by the metamorphic proxy to support a migrate feature.
130    SEL_MIGRATE = b"migrate()"
131}
132
133/// Create a proxy that calls "implementation(bytes4)" on the beacon
134/// address given with the selector in the calldata to this proxy. Use the
135/// returned address as the target of a delegatecall.
136pub const fn make_beacon_sel_proxy(beacon: Address) -> [u8; SIZE_BEACON_SEL_PROXY] {
137    make_beacon_sel_proxy_sel(SEL_IMPLEMENTATION, beacon)
138}
139
140pub const SIZE_METAMORPHIC_ON_FN: usize = 34 + 20 + 61;
141
142/// Make a metamorphic with an opt-in migrate function proxy.
143pub const fn make_metamorphic_proxy(deployer: Address) -> [u8; SIZE_METAMORPHIC_ON_FN] {
144    // Created from metamorphic-on-fn.huff .
145    concat_arrays!(
146        unpack_arr!(b"606a8060093d393df3365f5f375f3560e01c638fd3ab801461001757610031565b73", 34),
147        deployer,
148        unpack_arr!(
149            b"610054565b7f360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc545b5f365f5f935af43d5f5f3e3d5f8261006857fd5bf3",
150            61
151        )
152    )
153}
bobcat_proxy/lib.rs

bobcat_proxy/
lib.rs
