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177 changes: 177 additions & 0 deletions
177
aptos-move/framework/aptos-framework/sources/permissioned_signer.spec.move
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spec aptos_framework::permissioned_signer { | ||
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spec module { | ||
axiom forall a: GrantedPermissionHandles: | ||
(forall i in 0..len(a.active_handles): | ||
forall j in 0..len(a.active_handles): | ||
i != j ==> a.active_handles[i] != a.active_handles[j] | ||
); | ||
} | ||
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spec fun spec_is_permissioned_signer(s: signer): bool; | ||
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spec is_permissioned_signer(s: &signer): bool { | ||
pragma opaque; | ||
aborts_if [abstract] false; | ||
ensures [abstract] result == spec_is_permissioned_signer(s); | ||
} | ||
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spec fun spec_permission_signer(s: signer): signer; | ||
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spec permission_signer(permissioned: &signer): signer { | ||
pragma opaque; | ||
aborts_if [abstract] !spec_is_permissioned_signer(permissioned); | ||
ensures [abstract] result == spec_permission_signer(permissioned); | ||
} | ||
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spec fun spec_signer_from_permissioned_impl(master_addr: address, permission_addr: address): signer; | ||
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spec signer_from_permissioned_impl(master_addr: address, permission_addr: address): signer { | ||
pragma opaque; | ||
ensures [abstract] result == spec_signer_from_permissioned_impl(master_addr, permission_addr); | ||
} | ||
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spec create_permissioned_handle(master: &signer): PermissionedHandle { | ||
use aptos_framework::transaction_context; | ||
pragma opaque; | ||
aborts_if [abstract] spec_is_permissioned_signer(master); | ||
let permission_addr = transaction_context::spec_generate_unique_address(); | ||
modifies global<PermStorage>(permission_addr); | ||
let master_addr = signer::address_of(master); | ||
ensures result.master_addr == master_addr; | ||
ensures result.permission_addr == permission_addr; | ||
} | ||
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spec create_storable_permissioned_handle(master: &signer, expiration_time: u64): StorablePermissionedHandle { | ||
use aptos_framework::transaction_context; | ||
pragma opaque; | ||
aborts_if [abstract] spec_is_permissioned_signer(master); | ||
let permission_addr = transaction_context::spec_generate_unique_address(); | ||
modifies global<PermStorage>(permission_addr); | ||
let master_addr = signer::address_of(master); | ||
modifies global<GrantedPermissionHandles>(master_addr); | ||
ensures result.master_addr == master_addr; | ||
ensures result.permission_addr == permission_addr; | ||
ensures result.expiration_time == expiration_time; | ||
ensures vector::spec_contains(global<GrantedPermissionHandles>(master_addr).active_handles, permission_addr); | ||
ensures exists<GrantedPermissionHandles>(master_addr); | ||
} | ||
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spec destroy_permissioned_handle(p: PermissionedHandle) { | ||
ensures !exists<PermStorage>(p.permission_addr); | ||
} | ||
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spec destroy_storable_permissioned_handle(p: StorablePermissionedHandle) { | ||
ensures !exists<PermStorage>(p.permission_addr); | ||
let post granted_permissions = global<GrantedPermissionHandles>(p.master_addr); | ||
// ensures [abstract] !vector::spec_contains(granted_permissions.active_handles, p.permission_addr); | ||
} | ||
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spec revoke_permission_handle(s: &signer, permission_addr: address) { | ||
aborts_if spec_is_permissioned_signer(s); | ||
} | ||
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spec authorize<PermKey: copy + drop + store>( | ||
master: &signer, | ||
permissioned: &signer, | ||
capacity: u256, | ||
perm: PermKey | ||
) { | ||
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use aptos_std::type_info; | ||
use std::bcs; | ||
pragma aborts_if_is_partial; | ||
aborts_if !spec_is_permissioned_signer(permissioned); | ||
aborts_if spec_is_permissioned_signer(master); | ||
aborts_if signer::address_of(permissioned) != signer::address_of(master); | ||
ensures exists<PermStorage>(signer::address_of(spec_permission_signer(permissioned))); | ||
// let perms = global<PermStorage>(permission_signer_addr).perms; | ||
// let post post_perms = global<PermStorage>(permission_signer_addr).perms; | ||
// let key = Any { | ||
// type_name: type_info::type_name<SmartTable<Any, u256>>(), | ||
// data: bcs::serialize(perm) | ||
// }; | ||
// ensures smart_table::spec_contains(perms, key) ==> | ||
// smart_table::spec_get(post_perms, key) == old(smart_table::spec_get(perms, key)) + capacity; | ||
// ensures !smart_table::spec_contains(perms, key) ==> | ||
// smart_table::spec_get(post_perms, key) == capacity; | ||
} | ||
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spec check_permission_exists<PermKey: copy + drop + store>( | ||
s: &signer, | ||
perm: PermKey | ||
): bool { | ||
pragma opaque; | ||
aborts_if false; | ||
ensures result == spec_check_permission_exists(s, perm); | ||
} | ||
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spec fun spec_check_permission_exists<PermKey: copy + drop + store>( | ||
s: signer, | ||
perm: PermKey | ||
): bool { | ||
use aptos_std::type_info; | ||
use std::bcs; | ||
let addr = signer::address_of(spec_permission_signer(s)); | ||
let key = Any { | ||
type_name: type_info::type_name<PermKey>(), | ||
data: bcs::serialize(perm) | ||
}; | ||
if (!spec_is_permissioned_signer(s)) { | ||
true | ||
} else if(!exists<PermStorage>(addr)) { | ||
false | ||
} else { | ||
simple_map::spec_contains_key(global<PermStorage>(addr).perms, key) | ||
} | ||
} | ||
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spec check_permission_capacity_above<PermKey: copy + drop + store>( | ||
s: &signer, | ||
threshold: u256, | ||
perm: PermKey | ||
): bool { | ||
use aptos_std::type_info; | ||
use std::bcs; | ||
let permissioned_signer_addr = signer::address_of(spec_permission_signer(s)); | ||
ensures !spec_is_permissioned_signer(s) ==> result == true; | ||
ensures (spec_is_permissioned_signer(s) && !exists<PermStorage>(permissioned_signer_addr)) ==> result == false; | ||
let key = Any { | ||
type_name: type_info::type_name<SimpleMap<Any, u256>>(), | ||
data: bcs::serialize(perm) | ||
}; | ||
// ensures (spec_is_permissioned_signer(s) && exists<PermStorage>(permissioned_signer_addr) && !smart_table::spec_contains(global<PermStorage>(permissioned_signer_addr).perms, key)) ==> | ||
// result == false; | ||
// ensures (spec_is_permissioned_signer(s) && exists<PermStorage>(permissioned_signer_addr) && smart_table::spec_contains(global<PermStorage>(permissioned_signer_addr).perms, key)) ==> | ||
// result == (smart_table::spec_get(global<PermStorage>(permissioned_signer_addr).perms, key) > threshold); | ||
} | ||
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spec check_permission_consume<PermKey: copy + drop + store>( | ||
s: &signer, | ||
threshold: u256, | ||
perm: PermKey | ||
): bool { | ||
let permissioned_signer_addr = signer::address_of(spec_permission_signer(s)); | ||
ensures !spec_is_permissioned_signer(s) ==> result == true; | ||
ensures (spec_is_permissioned_signer(s) && !exists<PermStorage>(permissioned_signer_addr)) ==> result == false; | ||
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} | ||
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spec capacity<PermKey: copy + drop + store>(s: &signer, perm: PermKey): Option<u256> { | ||
aborts_if !spec_is_permissioned_signer(s); | ||
let permissioned_signer_addr = signer::address_of(spec_permission_signer(s)); | ||
ensures !exists<PermStorage>(permissioned_signer_addr) ==> option::is_none(result); | ||
} | ||
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spec consume_permission<PermKey: copy + drop + store>( | ||
perm: &mut Permission<PermKey>, | ||
weight: u256, | ||
perm_key: PermKey | ||
): bool { | ||
ensures perm.key != perm_key ==> result == false; | ||
ensures perm.key == perm_key && old(perm.capacity) < weight ==> result == false; | ||
ensures perm.key == perm_key && perm.capacity >= weight ==> | ||
(perm.capacity == old(perm.capacity) - weight && result == true); | ||
} | ||
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} |
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