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217 commits

Author SHA1 Message Date
Roman Khimov
15be763bb3 vm: limit POW, fix #2060 
Calculating pow(pow(2, 255), 0xffffffff) takes unknown amount of time. See
also neo-project/neo-vm#422.
 2021-07-19 15:42:41 +03:00
Roman Khimov
4000dd692c vm: make cloning limits a bit more effective 
Take actual reference counter value into account.
 2021-07-11 19:37:06 +03:00
Roman Khimov
cfe41abd35 vm: fix OOM during nested structure cloning 
Resulting item can't have more than MaxStackSize elements. Technically this
limits to MaxStackSize cloned elements but it's considered to be enough to
mitigate the issue (the next size check is going to happen during push to the
stack). See neo-project/neo#2534, thanks @vang1ong7ang.
 2021-07-11 18:47:50 +03:00
Evgeniy Stratonikov
1863023e27 vm: copy argument in unary opcodes, fix #2051 
We already do this in binary opcodes, let's be consistent.

This fixes state difference at height 275663
for tx 3c498317684d63849b03e4c58ad57ce4b19bb206b7b01bcc64233de3b3e207f4

Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
 2021-07-08 17:09:04 +03:00
Roman Khimov
9d2712573f *: enable godot linter and fix all its warnings 
It's important for NeoGo to have clean documentation. No functional changes.
 2021-05-12 23:17:03 +03:00
Roman Khimov
c4e084b0d8 *: fix whitespace errors 
leading/trailing newlines
 2021-05-12 22:51:41 +03:00
Evgeniy Stratonikov
23a4e25436 interop: remove System.Iterator.Create, fix #1935 
There are now only storage iterators. Related #1933.
 2021-05-11 12:13:30 +03:00
Evgeniy Stratonikov
8fa4a576f4 vm: allow Null arguments for LT,LE,GT,GE opcodes 2021-04-29 16:10:51 +03:00
Evgeniy Stratonikov
dc393642a2 opcode: fix GTE, LTE string representations 2021-04-29 16:08:48 +03:00
Anna Shaleva
14ade42101 core: remove System.Binary.[Serialize, Deserialize] syscalls 
And move their tests to native StdLib.
 2021-03-10 19:24:19 +03:00
Evgeniy Stratonikov
d255c4a517 vm: implement SQRT opcode 2021-03-01 16:58:53 +03:00
Evgeniy Stratonikov
6496782736 vm: implement POW opcode 2021-03-01 16:58:53 +03:00
Anna Shaleva
6a4e312eac core: move GetPrice from core to interop 
We have additional logic for getting BaseExecFee policy value. This
logic should be moved to interop context instead of being in Policer,
because Policer is just an interface over Policy contract.

After moving this logic to interop context, we need to use it to define
BaseExecFee instead of (Policer).BaseExecFee. Thus, moving
(*Blockchain).GetPrice to (*Context).GetPrice is necessary.
 2021-02-05 11:36:32 +03:00
Roman Khimov
d822e8dc21 vm: add test for neo-project/neo-vm#393 2021-02-01 16:39:54 +03:00
Evgeniy Stratonikov
324107b31e vm: implement POPITEM opcode 2021-01-19 09:46:01 +03:00
Evgeniy Stratonikov
2130e17f0c core,vm: remove System.Enumerator.* interops 
Map iterator now returns key-value pair, while array/byte-array
iterators work like old enumerators.
Follow neo-project/neo#2190.
 2021-01-15 21:11:32 +03:00
Evgeniy Stratonikov
d04b000748 vm: remove iterator/enumerator Concat API 
Follow neo-project/neo#2170.
 2021-01-15 21:08:59 +03:00
Evgenii Stratonikov
dbe81f9b80 smartcontract: move flags to a separate package 2021-01-14 17:52:09 +03:00
Evgenii Stratonikov
e4ee7cd407 vm: improve coverage for default interops 2020-12-02 15:54:03 +03:00
Evgenii Stratonikov
2f39701d76 vm: provide writer in PrintOps() 
Make it more flexible and testable. Fallback to using
stdout if no writer is provided.
 2020-12-02 10:49:37 +03:00
Evgenii Stratonikov
7d91a3a89e pkg: move internal/ package to the root directory 
This way we can use it in scripts and cli.
 2020-11-24 16:39:56 +03:00
Evgenii Stratonikov
96bca91e4b vm: handle very big int creation properly 
Determine size as in reference implementation instead of
`big.Int.BitLen()`

Close #1437.
 2020-10-07 11:50:42 +03:00
Evgenii Stratonikov
b2a3a0851e emit: accept multiple opcodes in Opcode() 2020-10-06 18:03:25 +03:00
Anna Shaleva
6761c297b5 vm: add test to check reference counter after PACK-UNPACK 
Related issue: https://github.com/neo-project/neo-vm/pull/370
 2020-09-29 18:46:20 +03:00
Roman Khimov
26339c75dc vm/core: drop old key caching system 
Obsoleted by f5f58a7e91.
 2020-09-10 14:43:24 +03:00
Evgenii Stratonikov
04f5fdefa0 vm: properly unload context on exception 
Do not copy exception context on CALL*.
 2020-08-27 10:28:50 +03:00
Evgenii Stratonikov
ab4cd8a990 vm: fix typo in MEMCPY handling 2020-08-25 08:53:29 +03:00
Roman Khimov
681ae4d5d6 vm: fix TRY offsets check 
TRY can have an offset != 0 and still it can't have both parameters set to
zero.
 2020-08-24 16:20:57 +03:00
Roman Khimov
32112249d5 vm: limit maximum nesting of exception contexts 
Follow neo-project/neo#365. neo-vm submodule is updated just to show the
relevant latest commit, nothing really changed there.
 2020-08-24 15:37:39 +03:00
Evgenii Stratonikov
8659fd79e5 vm: add tests for ByteString enumerator/iterator 2020-08-18 11:24:48 +03:00
Evgenii Stratonikov
7854dcfd8f core: replace interop names with named constants 2020-08-14 14:21:54 +03:00
Evgenii Stratonikov
f3650e20b0 vm: move InteropNameToID to a separate package 2020-08-14 13:54:11 +03:00
Evgenii Stratonikov
92ddc474d8 vm: pretty-print CONVERT and ISTYPE opcodes 2020-08-13 10:38:13 +03:00
Evgenii Stratonikov
bf01599430 vm: check return value on context unload 
When calling external contracts we expect exactly 1 value to be on
stack. For methods returning nothing, `Null` value is pushed, otherwise
it is an error.`
 2020-08-10 11:52:33 +03:00
Roman Khimov
5ef08f60ae remove github.com/pkg/errors from dependencies 
It's not needed any more with Go 1.13 as we have wrapping/unwrapping in base
packages. All errors.Wrap calls are replaced with fmt.Errorf, some strings are
improved along the way.
 2020-08-07 12:21:52 +03:00
Evgenii Stratonikov
51ae12e4fd *: move syscall handling out of VM 
Remove interop-related structures from the `vm` package.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
 2020-07-29 13:41:08 +03:00
Evgenii Stratonikov
6ecd1ae437 vm: allow to initialize static slot in method 2020-07-27 13:00:35 +03:00
Evgenii Stratonikov
797324cb04 vm: support exceptions 
Implement 3 new instructions: TRY,ENDTRY,ENDFINALLY.
1. TRY marks the start of the block where exceptions are catched.
    It has 2 arguments which are relative offsets of exception handler
    and the end of the whole try/catch construction.
2. ENDTRY denotes either end of try or catch block.
3. ENDFINALLY denotes end of finally block which is executed
    irregardless of whether an exception has occured.
 2020-07-24 10:41:41 +03:00
Evgenii Stratonikov
c0d7b9d234 vm: clear references on context unload 
Remove argument and local references from the reference counter when
returning from function.
 2020-07-24 10:41:40 +03:00
Roman Khimov
a45c160f10
Merge pull request #1225 from nspcc-dev/fix/equal 
vm: make EQUAL type strict
 2020-07-23 23:42:22 +03:00
Roman Khimov
2800179ce0
Merge pull request #1226 from nspcc-dev/fix/pusha 
vm: make offset in PUSHA relative
 2020-07-23 23:40:21 +03:00
Anna Shaleva
8fde41001e core, vm: remove allowed triggers from syscalls 
Closes #1205.
 2020-07-23 20:44:39 +03:00
Evgenii Stratonikov
b8843a2dfa vm: make offset in PUSHA relative 
Follow neo-project/neo-vm#317 .
 2020-07-23 13:07:30 +03:00
Evgenii Stratonikov
9252ef65bb vm: make EQUAL type strict 
Do not perform type conversions when comparing elements.
 2020-07-23 13:01:43 +03:00
Evgenii Stratonikov
261ff3c655 vm: remove alt.stack 
It is no longer present in NEO3.
 2020-07-22 13:20:31 +03:00
Anna Shaleva
a3e306ff78 core: implement Secp256k1 Verify and CheckMultisig interops 
Closes #918.
 2020-07-14 16:21:34 +03:00
Roman Khimov
db027ad9c5 vm: zero GAS means no GAS, use fee data to properly limit execution 
We were accepting transactions with zero system fee, but we shouldn't do
that. Also, transaction's verification execution has to be limited by network
fee.
 2020-07-14 08:37:29 +03:00
Anna Shaleva
73b630db9b *: switch from fixed8 to int64 
Follow C# implementation, we have to marshall JSON Fixed8 fields without
taking into account decimals.
 2020-06-29 21:39:27 +03:00
Evgenii Stratonikov
a7d4fff897 vm: make (*VM).GasLimit public 
VM is inherently single-threaded and replacing setter/getter methods
with public field simplifies code a bit.
 2020-06-16 15:13:20 +03:00
Evgenii Stratonikov
f2f01a08c9 vm: move MaxArraySize and MaxItemSize to stackitem package 2020-06-16 11:32:16 +03:00