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2020-03-04net: extract conditional to bool CNetAddr::IsHeNetJon Atack
and remove redundant public declaration
2020-02-05Merge #18023: Fix some asmap issuesWladimir J. van der Laan
c86bc144081f960347232546f7d22deb65d27deb Make asmap Interpret tolerant of malicious map data (Pieter Wuille) 38c2395d7a905c87dc4630031849fd8e403e61bf Use ASNs for mapped IPv4 addresses correctly (Pieter Wuille) 6f8c93731203c111f86c39eaf2102f9a825d1706 Mark asmap const in statistics code (Pieter Wuille) d58bcdc4b569a667b6974c3547b7ff6f665afce9 Avoid asmap copies in initialization (Pieter Wuille) Pull request description: Here are a few things to improve in the asmap implementation. The first two commits are just code improvements. The last one is a bugfix (the exsting code wouldn't correctly apply ASN lookups to mapped/embedded IPv4 addresses). ACKs for top commit: practicalswift: ACK c86bc144081f960347232546f7d22deb65d27deb -- patch looks correct naumenkogs: utACK c86bc14 laanwj: ACK c86bc144081f960347232546f7d22deb65d27deb jonatack: ACK c86bc144081f960347232546f7d22deb65d27deb code looks correct, built/ran tests, bitcoind with -asmap pointed to asmap/demo.map Tree-SHA512: 1036f43152754d621bfbecfd3b7c7276e4670598fcaed42a3d275e51fa2cf3653e2c9e9cfa714f6c7719362541510e92171e076ac4169b55a0cc8908b2d514c0
2020-01-31Use ASNs for mapped IPv4 addresses correctlyPieter Wuille
2020-01-30tests: Add fuzzing harness for AS-mapping (asmap)practicalswift
2020-01-29Merge #16702: p2p: supplying and using asmap to improve IP bucketing in addrmanWladimir J. van der Laan
3c1bc40205a3fcab606e70b0e3c13d68b2860e34 Add extra logging of asmap use and bucketing (Gleb Naumenko) e4658aa8eaf1629dd5af8cf7b9717a8e72028251 Return mapped AS in RPC call getpeerinfo (Gleb Naumenko) ec45646de9e62b3d42c85716bfeb06d8f2b507dc Integrate ASN bucketing in Addrman and add tests (Gleb Naumenko) 8feb4e4b667361bf23344149c01594abebd56fdb Add asmap utility which queries a mapping (Gleb Naumenko) Pull request description: This PR attempts to solve the problem explained in #16599. A particular attack which encouraged us to work on this issue is explained here [[Erebus Attack against Bitcoin Peer-to-Peer Network](https://erebus-attack.comp.nus.edu.sg/)] (by @muoitranduc) Instead of relying on /16 prefix to diversify the connections every node creates, we would instead rely on the (ip -> ASN) mapping, if this mapping is provided. A .map file can be created by every user independently based on a router dump, or provided along with the Bitcoin release. Currently we use the python scripts written by @sipa to create a .map file, which is no larger than 2MB (awesome!). Here I suggest adding a field to peers.dat which would represent a hash of asmap file used while serializing addrman (or 0 for /16 prefix legacy approach). In this case, every time the file is updated (or grouping method changed), all buckets will be re-computed. I believe that alternative selective re-bucketing for only updated ranges would require substantial changes. TODO: - ~~more unit tests~~ - ~~find a way to test the code without including >1 MB mapping file in the repo.~~ - find a way to check that mapping file is not corrupted (checksum?) - comments and separate tests for asmap.cpp - make python code for .map generation public - figure out asmap distribution (?) ~Interesting corner case: I’m using std::hash to compute a fingerprint of asmap, and std::hash returns size_t. I guess if a user updates the OS to 64-bit, then the hash of asap will change? Does it even matter?~ ACKs for top commit: laanwj: re-ACK 3c1bc40205a3fcab606e70b0e3c13d68b2860e34 jamesob: ACK 3c1bc40205a3fcab606e70b0e3c13d68b2860e34 ([`jamesob/ackr/16702.3.naumenkogs.p2p_supplying_and_using`](https://github.com/jamesob/bitcoin/tree/ackr/16702.3.naumenkogs.p2p_supplying_and_using)) jonatack: ACK 3c1bc40205a3fcab606e70b0e3c13d68b2860e34 Tree-SHA512: e2dc6171188d5cdc2ab2c022fa49ed73a14a0acb8ae4c5ffa970172a0365942a249ad3d57e5fb134bc156a3492662c983f74bd21e78d316629dcadf71576800c
2020-01-23Return mapped AS in RPC call getpeerinfoGleb Naumenko
If ASN bucketing is used, return a corresponding AS used in bucketing for a given peer.
2019-12-30scripted-diff: Bump copyright of files changed in 2019MarcoFalke
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT-
2019-12-25Integrate ASN bucketing in Addrman and add testsGleb Naumenko
Instead of using /16 netgroups to bucket nodes in Addrman for connection diversification, ASN, which better represents an actor in terms of network-layer infrastructure, is used. For testing, asmap.raw is used. It represents a minimal asmap needed for testing purposes.
2019-12-16CNetAddr: fix IsRFC2544 commentMark Tyneway
2019-10-15Remove unused includespracticalswift
2019-05-15netaddress: Update CNetAddr for ORCHIDv2Carl Dong
The original ORCHID prefix was deprecated as of 2014-03, the new ORCHIDv2 prefix was allocated by RFC7343 as of 2014-07. We did not consider the original ORCHID prefix routable, and I don't see any reason to consider the new one to be either.
2019-04-10docs: Improve netaddress commentsCarl Dong
- Improve IsRFC methods docs - Improve {Is,Set}Internal docs - Add tor methods docs - Add IsIPv{4,6} docs - Add IsValid docs - Add IsRoutable docs - Improve GetGroup docs - Add CService::GetSockAddr docs - Add CService::GetKey docs - Add CSubNet::Match docs - Add NetmaskBits docs - Add CNetAddr default constructor docs
2018-11-23Merge #14728: fix uninitialized read when stringifying an addrLocalWladimir J. van der Laan
b7b36decaf878a8c1dcfdb4a27196c730043474b fix uninitialized read when stringifying an addrLocal (Kaz Wesley) 8ebbef016928811756e46b9086067d1c826797a8 add test demonstrating addrLocal UB (Kaz Wesley) Pull request description: Reachable from either place where SetIP is used when all of: - our best-guess addrLocal for a peer is IPv4 - the peer tells us it's reaching us at an IPv6 address - NET logging is enabled In that case, SetIP turns an IPv4 address into an IPv6 address without setting the scopeId, which is subsequently read in GetSockAddr during CNetAddr::ToStringIP and passed to getnameinfo. Fix by ensuring every constructor initializes the scopeId field with something. Tree-SHA512: 8f0159750995e08b985335ccf60a273ebd09003990bcf2c3838b550ed8dc2659552ac7611650e6dd8e29d786fe52ed57674f5880f2e18dc594a7a863134739e3
2018-11-22CNetAddr: Add IsBindAny method to check for INADDR_ANYLuke Dashjr
2018-11-15fix uninitialized read when stringifying an addrLocalKaz Wesley
Reachable from either place where SetIP is used when our best-guess addrLocal for a peer is IPv4, but the peer tells us it's reaching us at an IPv6 address. In that case, SetIP turns an IPv4 address into an IPv6 address without setting the scopeId, which is subsequently read in GetSockAddr during CNetAddr::ToStringIP and passed to getnameinfo. Fix by ensuring every constructor initializes the scopeId field with something.
2018-07-27Update copyright headers to 2018DrahtBot
2018-07-02scripted-diff: Replace NET_TOR with NET_ONIONwodry
-BEGIN VERIFY SCRIPT- sed --in-place'' --expression='s/NET_TOR/NET_ONION/g' $(git grep -I --files-with-matches 'NET_TOR') -END VERIFY SCRIPT- The --in-place'' hack is required for sed on macOS to edit files in-place without passing a backup extension.
2018-04-16net: Minor accumulated cleanupsThomas Snider
2018-04-08Introduce BigEndian wrapper and use it for netaddress portsPieter Wuille
2018-04-05Support serializing Span<unsigned char> and use that instead of FLATDATAPieter Wuille
2018-03-21Add native support for serializing char arrays without FLATDATAPieter Wuille
Support is added to serialize arrays of type char or unsigned char directly, without any wrappers. All invocations of the FLATDATA wrappers that are obsoleted by this are removed. This includes a patch by Russell Yanofsky to make char casting type safe. The serialization of CSubNet is changed to serialize a bool directly rather than though FLATDATA. This makes the serialization independent of the size of the bool type (and will use 1 byte everywhere).
2018-01-03Increment MIT Licence copyright header year on files modified in 2017Akira Takizawa
2017-11-16scripted-diff: Replace #include "" with #include <> (ryanofsky)MeshCollider
-BEGIN VERIFY SCRIPT- for f in \ src/*.cpp \ src/*.h \ src/bench/*.cpp \ src/bench/*.h \ src/compat/*.cpp \ src/compat/*.h \ src/consensus/*.cpp \ src/consensus/*.h \ src/crypto/*.cpp \ src/crypto/*.h \ src/crypto/ctaes/*.h \ src/policy/*.cpp \ src/policy/*.h \ src/primitives/*.cpp \ src/primitives/*.h \ src/qt/*.cpp \ src/qt/*.h \ src/qt/test/*.cpp \ src/qt/test/*.h \ src/rpc/*.cpp \ src/rpc/*.h \ src/script/*.cpp \ src/script/*.h \ src/support/*.cpp \ src/support/*.h \ src/support/allocators/*.h \ src/test/*.cpp \ src/test/*.h \ src/wallet/*.cpp \ src/wallet/*.h \ src/wallet/test/*.cpp \ src/wallet/test/*.h \ src/zmq/*.cpp \ src/zmq/*.h do base=${f%/*}/ relbase=${base#src/} sed -i "s:#include \"\(.*\)\"\(.*\):if test -e \$base'\\1'; then echo \"#include <\"\$relbase\"\\1>\\2\"; else echo \"#include <\\1>\\2\"; fi:e" $f done -END VERIFY SCRIPT-
2017-08-16Declare single-argument (non-converting) constructors "explicit"practicalswift
In order to avoid unintended implicit conversions.
2017-08-07scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal ↵practicalswift
instead of the macro NULL -BEGIN VERIFY SCRIPT- sed -i 's/\<NULL\>/nullptr/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h src/qt/*/*.cpp src/qt/*/*.h src/wallet/*/*.cpp src/wallet/*/*.h src/support/allocators/*.h sed -i 's/Prefer nullptr, otherwise SAFECOOKIE./Prefer NULL, otherwise SAFECOOKIE./g' src/torcontrol.cpp sed -i 's/tor: Using nullptr authentication/tor: Using NULL authentication/g' src/torcontrol.cpp sed -i 's/METHODS=nullptr/METHODS=NULL/g' src/test/torcontrol_tests.cpp src/torcontrol.cpp sed -i 's/nullptr certificates/NULL certificates/g' src/qt/paymentserver.cpp sed -i 's/"nullptr"/"NULL"/g' src/torcontrol.cpp src/test/torcontrol_tests.cpp -END VERIFY SCRIPT-
2017-07-22remove some unused functionsMarko Bencun
Identified with `cppcheck --enable=unusedFunction .`. - GetSendBufferSize()'s last use removed in 991955ee81034dc3fbc1c2a8e60c04fc9e0b538c - SetPort()'s last use removed in 7e195e8459ad741368db6bb574981fccb1707268 - GetfLargeWorkInvalidChainFound() was introduced in e3ba0ef95636290a3bb597ddd25d13ea13b034aa and never used
2017-06-14net: add an internal subnet for representing unresolved hostnamesCory Fields
We currently do two resolves for dns seeds: one for the results, and one to serve in addrman as the source for those addresses. There's no requirement that the source hostname resolves to the stored identifier, only that the mapping is unique. So rather than incurring the second lookup, combine a private subnet with a hash of the hostname. The resulting v6 ip is guaranteed not to be publicy routable, and has only a negligible chance of colliding with a user's internal network (which would be of no consequence anyway).
2017-04-26Remove unused C++ code not covered by unit testspracticalswift
2017-01-27[trivial] Fix typos in commentspracticalswift
2016-12-31Increment MIT Licence copyright header year on files modified in 2016isle2983
Edited via: $ contrib/devtools/copyright_header.py update .
2016-11-07Get rid of nType and nVersionPieter Wuille
Remove the nType and nVersion as parameters to all serialization methods and functions. There is only one place where it's read and has an impact (in CAddress), and even there it does not impact any of the recursively invoked serializers. Instead, the few places that need nType or nVersion are changed to read it directly from the stream object, through GetType() and GetVersion() methods which are added to all stream classes.
2016-07-31net: move CNetAddr/CService/CSubNet out of netbaseCory Fields
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