contracts: Allow contracts to dispatch calls into the runtime (#9276)

* contracts: Allow contracts to dispatch calls into the runtime

* Fix RPC tests

* Fix typo

* Replace () by AllowAllFilter and DenyAllFilter

* Add rust doc

* Fixup for `()` removal

* Fix lowest gas calculation

* Rename AllowAllFilter and DenyAllFilter

* Updated changelog
This commit is contained in:
Alexander Theißen
2021-07-12 22:40:27 +02:00
committed by GitHub
parent 2f31602896
commit e01ac8cea0
80 changed files with 674 additions and 107 deletions
@@ -0,0 +1,33 @@
;; This passes its input to `seal_call_runtime` and returns the return value to its caller.
(module
(import "__unstable__" "seal_call_runtime" (func $seal_call_runtime (param i32 i32) (result i32)))
(import "seal0" "seal_input" (func $seal_input (param i32 i32)))
(import "seal0" "seal_return" (func $seal_return (param i32 i32 i32)))
(import "env" "memory" (memory 1 1))
;; 0x1000 = 4k in little endian
;; size of input buffer
(data (i32.const 0) "\00\10")
(func (export "call")
;; Receive the encoded call
(call $seal_input
(i32.const 4) ;; Pointer to the input buffer
(i32.const 0) ;; Size of the length buffer
)
;; Just use the call passed as input and store result to memory
(i32.store (i32.const 0)
(call $seal_call_runtime
(i32.const 4) ;; Pointer where the call is stored
(i32.load (i32.const 0)) ;; Size of the call
)
)
(call $seal_return
(i32.const 0) ;; flags
(i32.const 0) ;; returned value
(i32.const 4) ;; length of returned value
)
)
(func (export "deploy"))
)
@@ -0,0 +1,37 @@
;; This expects [account_id, gas_limit] as input and calls the account_id with the supplied gas_limit.
;; It returns the result of the call as output data.
(module
(import "seal0" "seal_input" (func $seal_input (param i32 i32)))
(import "seal0" "seal_call" (func $seal_call (param i32 i32 i64 i32 i32 i32 i32 i32 i32) (result i32)))
(import "seal0" "seal_return" (func $seal_return (param i32 i32 i32)))
(import "env" "memory" (memory 1 1))
;; 0x1000 = 4k in little endian
;; size of input buffer
(data (i32.const 0) "\00\10")
(func (export "deploy"))
(func (export "call")
;; Receive the encoded call + gas_limit
(call $seal_input
(i32.const 4) ;; Pointer to the input buffer
(i32.const 0) ;; Size of the length buffer
)
(i32.store
(i32.const 0)
(call $seal_call
(i32.const 4) ;; Pointer to "callee" address.
(i32.const 32) ;; Length of "callee" address.
(i64.load (i32.const 36)) ;; How much gas to devote for the execution.
(i32.const 0) ;; Pointer to the buffer with value to transfer
(i32.const 0) ;; Length of the buffer with value to transfer.
(i32.const 0) ;; Pointer to input data buffer address
(i32.const 0) ;; Length of input data buffer
(i32.const 0xffffffff) ;; u32 max sentinel value: do not copy output
(i32.const 0) ;; Ptr to output buffer len
)
)
(call $seal_return (i32.const 0) (i32.const 0) (i32.const 4))
)
)