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* p2p: fix comment typo (#18027)Liang Ma2018-11-081-1/+1
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* all: new p2p node representation (#17643)Felix Lange2018-09-251-31/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Package p2p/enode provides a generalized representation of p2p nodes which can contain arbitrary information in key/value pairs. It is also the new home for the node database. The "v4" identity scheme is also moved here from p2p/enr to remove the dependency on Ethereum crypto from that package. Record signature handling is changed significantly. The identity scheme registry is removed and acceptable schemes must be passed to any method that needs identity. This means records must now be validated explicitly after decoding. The enode API is designed to make signature handling easy and safe: most APIs around the codebase work with enode.Node, which is a wrapper around a valid record. Going from enr.Record to enode.Node requires a valid signature. * p2p/discover: port to p2p/enode This ports the discovery code to the new node representation in p2p/enode. The wire protocol is unchanged, this can be considered a refactoring change. The Kademlia table can now deal with nodes using an arbitrary identity scheme. This requires a few incompatible API changes: - Table.Lookup is not available anymore. It used to take a public key as argument because v4 protocol requires one. Its replacement is LookupRandom. - Table.Resolve takes *enode.Node instead of NodeID. This is also for v4 protocol compatibility because nodes cannot be looked up by ID alone. - Types Node and NodeID are gone. Further commits in the series will be fixes all over the the codebase to deal with those removals. * p2p: port to p2p/enode and discovery changes This adapts package p2p to the changes in p2p/discover. All uses of discover.Node and discover.NodeID are replaced by their equivalents from p2p/enode. New API is added to retrieve the enode.Node instance of a peer. The behavior of Server.Self with discovery disabled is improved. It now tries much harder to report a working IP address, falling back to 127.0.0.1 if no suitable address can be determined through other means. These changes were needed for tests of other packages later in the series. * p2p/simulations, p2p/testing: port to p2p/enode No surprises here, mostly replacements of discover.Node, discover.NodeID with their new equivalents. The 'interesting' API changes are: - testing.ProtocolSession tracks complete nodes, not just their IDs. - adapters.NodeConfig has a new method to create a complete node. These changes were needed to make swarm tests work. Note that the NodeID change makes the code incompatible with old simulation snapshots. * whisper/whisperv5, whisper/whisperv6: port to p2p/enode This port was easy because whisper uses []byte for node IDs and URL strings in the API. * eth: port to p2p/enode Again, easy to port because eth uses strings for node IDs and doesn't care about node information in any way. * les: port to p2p/enode Apart from replacing discover.NodeID with enode.ID, most changes are in the server pool code. It now deals with complete nodes instead of (Pubkey, IP, Port) triples. The database format is unchanged for now, but we should probably change it to use the node database later. * node: port to p2p/enode This change simply replaces discover.Node and discover.NodeID with their new equivalents. * swarm/network: port to p2p/enode Swarm has its own node address representation, BzzAddr, containing both an overlay address (the hash of a secp256k1 public key) and an underlay address (enode:// URL). There are no changes to the BzzAddr format in this commit, but certain operations such as creating a BzzAddr from a node ID are now impossible because node IDs aren't public keys anymore. Most swarm-related changes in the series remove uses of NewAddrFromNodeID, replacing it with NewAddr which takes a complete node as argument. ToOverlayAddr is removed because we can just use the node ID directly.
* p2p: token is useless in xxxEncHandshake (#17230)Wenbiao Zheng2018-07-231-8/+7
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* crypto: replace ToECDSAPub with error-checking func UnmarshalPubkey (#16932)Felix Lange2018-06-121-3/+3
| | | | | | ToECDSAPub was unsafe because it returned a non-nil key with nil X, Y in case of invalid input. This change replaces ToECDSAPub with UnmarshalPubkey across the codebase.
* ecies: drop randomness parameter from `PrivateKey.Decrypt` (#16374)David Huie2018-03-261-2/+2
| | | | | The parameter `rand` is unused in `PrivateKey.Decrypt`. Decryption in the ECIES encryption scheme is deterministic, so randomness isn't needed.
* p2p: fix doEncHandshake documentation (#16184)JU HYEONG PARK2018-02-271-4/+4
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* p2p: don't send DiscReason when using net.Pipe (#16004)Anton Evangelatov2018-02-221-2/+8
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* p2p: snappy encoding for devp2p (version bump to 5) (#15106)Péter Szilágyi2017-09-261-0/+42
| | | | | | * p2p: snappy encoding for devp2p (version bump to 5) * p2p: remove lazy decompression, enforce 16MB limit
* crypto: add btcec fallback for sign/recover without cgo (#3680)Felix Lange2017-02-181-2/+2
| | | | | | | | | | | * vendor: add github.com/btcsuite/btcd/btcec * crypto: add btcec fallback for sign/recover without cgo This commit adds a non-cgo fallback implementation of secp256k1 operations. * crypto, core/vm: remove wrappers for sha256, ripemd160
* all: fix ineffectual assignments and remove uses of crypto.Sha3Felix Lange2017-01-091-3/+3
| | | | | go get github.com/gordonklaus/ineffassign ineffassign .
* p2p: enable EIP-8 handshake sendingFelix Lange2016-04-041-9/+1
| | | | | With the Ethereum Homestead fork is now behind us, we can assume that everyone runs an EIP-8 capable client.
* all: Rename crypto.Sha3{,Hash}() to crypto.Keccak256{,Hash}()Ricardo Catalinas Jiménez2016-02-221-4/+4
| | | | As we aren't really using the standarized SHA-3
* p2p: EIP-8 changesFelix Lange2016-02-191-142/+209
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* crypto, crypto/ecies, crypto/secp256k1: libsecp256k1 scalar multGustav Simonsson2015-11-301-2/+2
| | | | thanks to Felix Lange (fjl) for help with design & impl
* Merge pull request #1470 from ebuchman/encHandshakeFelix Lange2015-08-131-4/+12
|\ | | | | p2p: validate recovered ephemeral pubkey
| * p2p: validate recovered ephemeral pubkey against checksum in decodeAuthMsgEthan Buchman2015-07-141-4/+12
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* | all: fix license headers one more timeFelix Lange2015-07-241-1/+1
| | | | | | | | I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
* | all: update license headers to distiguish GPL/LGPLFelix Lange2015-07-231-4/+4
|/ | | | | All code outside of cmd/ is licensed as LGPL. The headers now reflect this by calling the whole work "the go-ethereum library".
* all: update license informationFelix Lange2015-07-071-0/+16
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* p2p: fix close data racePéter Szilágyi2015-06-091-0/+1
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* p2p: new dialer, peer management without locksFelix Lange2015-05-251-4/+440
| | | | | | | | | | | | | | | | | | The most visible change is event-based dialing, which should be an improvement over the timer-based system that we have at the moment. The dialer gets a chance to compute new tasks whenever peers change or dials complete. This is better than checking peers on a timer because dials happen faster. The dialer can now make more precise decisions about whom to dial based on the peer set and we can test those decisions without actually opening any sockets. Peer management is easier to test because the tests can inject connections at checkpoints (after enc handshake, after protocol handshake). Most of the handshake stuff is now part of the RLPx code. It could be exported or move to its own package because it is no longer entangled with Server logic.
* p2p: reject messages that cannot be written as simple RLPx framesFelix Lange2015-03-041-0/+5
| | | | | Until chunked frames are implemented we cannot send messages with a size overflowing uint24.
* p2p: restore read/write timeoutsFelix Lange2015-03-041-0/+5
| | | | They got lost in the transition to rlpxFrameRW.
* p2p: make RLPx frame MAC 16 bytes as defined in the specFelix Lange2015-03-041-12/+19
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* p2p: encrypted and authenticated RLPx frame I/OFelix Lange2015-03-041-19/+47
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* p2p: add basic RLPx frame I/OFelix Lange2015-03-041-0/+129
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