Commit graph

948 commits

Author SHA1 Message Date
Amiti Uttarwar
e1bc29812d [net/refactor] Add block relay only connections to ConnectionType enum 2020-08-07 17:18:16 -07:00
Amiti Uttarwar
0e52a659a2 [net/refactor] Add feeler connections to ConnectionType enum 2020-08-07 17:18:16 -07:00
Amiti Uttarwar
1521c47438 [net/refactor] Add manual connections to ConnectionType enum 2020-08-07 17:18:16 -07:00
Amiti Uttarwar
26304b4100 [net/refactor] Introduce an enum to distinguish type of connection
- extract inbound & outbound types
2020-08-07 17:18:16 -07:00
Amiti Uttarwar
3f1b7140e9 scripted-diff: Rename OneShot to AddrFetch
-BEGIN VERIFY SCRIPT-
sed -i 's/a oneshot/an addrfetch/g' src/chainparams.cpp #comment
sed -i 's/oneshot/addrfetch/g' src/net.cpp #comment
sed -i 's/AddOneShot/AddAddrFetch/g' src/net.h src/net.cpp
sed -i 's/cs_vOneShots/m_addr_fetches_mutex/g' src/net.h src/net.cpp
sed -i 's/vOneShots/m_addr_fetches/g' src/net.h src/net.cpp
sed -i 's/fOneShot/m_addr_fetch/g' src/net.h src/net.cpp src/net_processing.cpp
sed -i 's/ProcessOneShot/ProcessAddrFetch/g' src/net.h src/net.cpp
-END VERIFY SCRIPT-
2020-08-07 17:18:12 -07:00
Wladimir J. van der Laan
0a8aa626dd refactor: Make HexStr take a span
Make HexStr take a span of bytes, instead of an awkward pair of
templated iterators.
2020-08-06 19:41:43 +02:00
Wladimir J. van der Laan
34eb236258
Merge #19326: Simplify hash.h interface using Spans
77c507358b Make Hash[160] consume range-like objects (Pieter Wuille)
02c4cc5c5d Make CHash256/CHash160 output to Span (Pieter Wuille)
0ef97b1b10 Make MurmurHash3 consume Spans (Pieter Wuille)
e549bf8a9a Make CHash256 and CHash160 consume Spans (Pieter Wuille)
2a2182c387 Make script/standard's BaseHash Span-convertible (Pieter Wuille)
e63dcc3a67 Add MakeUCharSpan, to help constructing Span<[const] unsigned char> (Pieter Wuille)
567825049f Make uint256 Span-convertible by adding ::data() (Pieter Wuille)
131a2f0337 scripted-diff: rename base_blob::data to m_data (Pieter Wuille)

Pull request description:

  This makes use of the implicit constructions and conversions to Span introduced in #18468 to simplify the hash.h interface:

  * All functions that take a pointer and a length are changed to take a Span instead.
  * The Hash() and Hash160() functions are changed to take in "range" objects instead of begin/end iterators.

ACKs for top commit:
  laanwj:
    re-ACK 77c507358b
  jonatack:
    Code review re-ACK 77c5073 per `git range-diff 14ceddd 49fc016 77c5073`

Tree-SHA512: 9ec929891b1ddcf30eb14b946ee1bf142eca1442b9de0067ad6a3c181e0c7ea0c99c0e291e7f6e7a18bd7bdf78fe94ee3d5de66e167401674caf91e026269771
2020-08-03 17:27:49 +02:00
Pieter Wuille
77c507358b Make Hash[160] consume range-like objects 2020-07-30 13:57:54 -07:00
Pieter Wuille
02c4cc5c5d Make CHash256/CHash160 output to Span 2020-07-30 13:57:54 -07:00
Pieter Wuille
e549bf8a9a Make CHash256 and CHash160 consume Spans 2020-07-30 13:57:53 -07:00
Gleb Naumenko
acd6135b43 Cache responses to addr requests
Prevents a spy from scraping victim's AddrMan by
reconnecting and re-requesting addrs.
2020-07-30 14:38:48 +03:00
Gleb Naumenko
ded742bc5b Move filtering banned addrs inside GetAddresses() 2020-07-24 18:02:20 +03:00
MarcoFalke
6ee36a263c
Merge #19473: net: Add -networkactive option
2aac093a3d test: Add test coverage for -networkactive option (Hennadii Stepanov)
3c58129b12 net: Log network activity status change unconditionally (Hennadii Stepanov)
62fe6aa87e net: Add -networkactive option (Hennadii Stepanov)

Pull request description:

  Some Bitcoin Core activity is completely local (offline), e.g., reindexing.

  The `setnetworkactive` RPC command is already present. This PR adds the corresponding command-line argument / config option, and allows to start the client with disabled p2p network by providing `-networkactive=0` or `-nonetworkactive`.

  This was done while reviewing #16981.

ACKs for top commit:
  MarcoFalke:
    re-ACK 2aac093a3d 🏠
  LarryRuane:
    ACK 2aac093a3d

Tree-SHA512: 446d791b46d7b556d7694df7b1f88cd4fbc09301fe4eaf036b45cb8166ed806156353cc03788a07b633d5887d5eee30a7c02a2d4307141c8ccc75e0a88145636
2020-07-23 18:32:59 +02:00
Hennadii Stepanov
3c58129b12
net: Log network activity status change unconditionally 2020-07-22 22:55:47 +03:00
Hennadii Stepanov
62fe6aa87e
net: Add -networkactive option
The `setnetworkactive' RPC command is already present.
This new option allows to start the client with disabled p2p network
activity for testing or reindexing.
2020-07-22 22:55:11 +03:00
John Newbery
ca3585a483 [net/net processing] check banman pointer before dereferencing
Although we currently don't do this, it should be possible to create a
CConnman or PeerLogicValidation without a Banman instance. Therefore
always check that banman exists before dereferencing the pointer.

Also add comments to the m_banman members of CConnman and
PeerLogicValidation to document that these may be nullptr.
2020-07-14 10:24:43 +01:00
MarcoFalke
c0b0b0240f
Merge #14033: p2p: Drop CADDR_TIME_VERSION checks now that MIN_PEER_PROTO_VERSION is greater
57b0c0a93a Drop CADDR_TIME_VERSION checks now that MIN_PEER_PROTO_VERSION is greater (Ben Woosley)

Pull request description:

  We do not connect to peers older than 31800

ACKs for top commit:
  sipa:
    Code reivew ACK 57b0c0a93a
  jnewbery:
    Code review ACK 57b0c0a93a
  vasild:
    ACK 57b0c0a9

Tree-SHA512: e1ca7c9203cbad83ab7c7a2312777ad07ed6a16119169b256648b8a8738c260a5168acdd4fb33f6e4b17f51ec7e033e110b76bde55b4e3b2d444dc02c01bc2b1
2020-07-10 19:16:48 +02:00
MarcoFalke
107b8559c5
Merge #18638: net: Use mockable time for ping/pong, add tests
fa3365430c net: Use mockable time for ping/pong, add tests (MarcoFalke)
faab4aaf2f util: Add count_microseconds helper (MarcoFalke)

Pull request description:

  Switch `CNode::m_ping_start` and `CNetMessage::m_time` to mockable time, so that tests can be added.

  Mockable time is also type-safe, since it uses `std::chrono`

ACKs for top commit:
  jonatack:
    Code review re-ACK fa33654 re-read code, verified rebase per `git range-diff 4b5c919 fa94d6f fa33654`, previous tested ACKs still valid
  troygiorshev:
    ACK fa3365430c

Tree-SHA512: 7d632bd6019ce7c882029e71b667a61517e783af82755a85dd979ef09380934e172dec8b8f91d57b200a30a6e096aeaf01f19fee7f3aed0e0e871c72eb44d70e
2020-07-10 16:06:28 +02:00
MarcoFalke
cc9d09e73d
Merge #19191: net: Extract download permission from noban
fa0540cd46 net: Extract download permission from noban (MarcoFalke)

Pull request description:

  It should be possible to grant nodes in a local network (e.g. home, university, enterprise, ...) permission to download blocks even after the maxuploadtarget is hit.

  Currently this is only possible by setting the `noban` permission, which has some adverse effects, especially if the peers can't be fully trusted.

  Fix this by extracting a `download` permission from `noban`.

ACKs for top commit:
  jonatack:
    ACK fa0540c
  Sjors:
    re-utACK fa0540cd46

Tree-SHA512: 255566baa43ae925d93f5d0a3aa66b475a556d1590f662a88278a4872f16a1a05739a6119ae48a293011868042e05cb264cffe5822a50fb80db7333bf44376d9
2020-07-09 17:03:27 +02:00
Wladimir J. van der Laan
0d69fdb9a0
Merge #19314: refactor: Use uint16_t instead of unsigned short
1cabbddbca refactor: Use uint16_t instead of unsigned short (Aaron Hook)

Pull request description:

  I wanted to see if the `up for grabs` label works and looked at PR #17822 originally opend by ahook I saw it had many acks for example by jonatack and practicalswift but needed rebasing.

  So I checked out the remote branch rebased it resolved three conflicts and continued the rebase.

  Hope everything is as expected (:

ACKs for top commit:
  sipsorcery:
    ACK 1cabbddbca.
  practicalswift:
    ACK 1cabbddbca -- patch looks correct :)
  laanwj:
    ACK 1cabbddbca
  hebasto:
    ACK 1cabbddbca, I have reviewed the code and it looks OK, I agree it can be merged.

Tree-SHA512: 0e6bf64f274aae5dacb188358b4d5f65ccb207d4f70922f039bc4ed7934709418ddad19f8bfb7462517427837c3d2bb3f86ef284bb40e87119aad2a1e148d9d6
2020-07-09 16:56:05 +02:00
MarcoFalke
fa0540cd46
net: Extract download permission from noban 2020-07-09 12:48:05 +02:00
MarcoFalke
9f4c0a9694
Merge #19347: [net] Make cs_inventory nonrecursive
e8a2822119 [net] Don't try to take cs_inventory before deleting CNode (John Newbery)
3556227ddd [net] Make cs_inventory a non-recursive mutex (John Newbery)
344e831de5 [net processing] Remove PushBlockInventory and PushBlockHash (John Newbery)

Pull request description:

  - Remove PushBlockInventory() and PushBlockHash(). These are one-line functions that can easy be inlined into the calling code. Doing so also allows us to eliminate the one place that cs_inventory is recursively locked.
  - Make cs_inventory a nonrecursive mutex
  - Remove a redundant TRY_LOCK of cs_inventory when deleting CNode.

ACKs for top commit:
  sipa:
    utACK e8a2822119
  MarcoFalke:
    ACK e8a2822119 🍬
  hebasto:
    re-ACK e8a2822119

Tree-SHA512: dbc721d102cdef7b5827a8f2549daf8b54f543050266999a7ea56c9f36618565b71e31ce0beb1209ba2db43d15388be173355a03fb6db8ad24e2475b145050bd
2020-07-08 21:57:25 +02:00
Pieter Wuille
2ad58381ff Clean up separated ban/discourage interface 2020-07-03 20:43:55 -07:00
Pieter Wuille
b691f2df5f Replace automatic bans with discouragement filter
This patch improves performance and resource usage around IP
addresses that are banned for misbehavior. They're already not
actually banned, as connections from them are still allowed,
but they are preferred for eviction if the inbound connection
slots are full.

Stop treating these like manually banned IP ranges, and instead
just keep them in a rolling Bloom filter of misbehaving nodes,
which isn't persisted to disk or exposed through the ban
framework. The effect remains the same: preferred for eviction,
avoided for outgoing connections, and not relayed to other peers.

Also change the name of this mechanism to better reflect reality;
they're not banned, just discouraged.

Contains release notes and several interface improvements by
John Newbery.
2020-07-03 20:43:55 -07:00
MarcoFalke
cccc2784a3
scripted-diff: Move ui_interface to the node lib
-BEGIN VERIFY SCRIPT-

 # Move files
 git mv src/ui_interface.h                                          src/node/ui_interface.h
 git mv src/ui_interface.cpp                                        src/node/ui_interface.cpp
 sed -i -e 's/BITCOIN_UI_INTERFACE_H/BITCOIN_NODE_UI_INTERFACE_H/g' src/node/ui_interface.h

 # Adjust includes and makefile
 sed -i -e 's|ui_interface|node/ui_interface|g' $(git grep -l ui_interface)

 # Sort includes
 git diff -U0 | clang-format-diff -p1 -i -v

-END VERIFY SCRIPT-
2020-06-27 11:49:28 -04:00
John Newbery
e8a2822119 [net] Don't try to take cs_inventory before deleting CNode
The TRY_LOCK(cs_inventory) in DisconnectNodes() is taken after the CNode
object has been removed from vNodes and when the CNode's nRefCount is
zero.

The only other places that cs_inventory can be taken are:

- In ProcessMessages() or SendMessages(), when the CNode's nRefCount
must be >0 (see ThreadMessageHandler(), where the refcount is
incremented before calling ProcessMessages() and SendMessages()).
- In a ForEachNode() lambda in PeerLogicValidation::UpdatedBlockTip().
ForEachNode() locks cs_vNodes and calls the function on the CNode
objects in vNodes.

Therefore, cs_inventory is never locked by another thread when the
TRY_LOCK(cs_inventory) is reached in DisconnectNodes(). Since the
only purpose of this TRY_LOCK is to ensure that the lock is not
taken by another thread, this always succeeds. Remove the check.
2020-06-23 08:46:05 -04:00
Ben Woosley
57b0c0a93a
Drop CADDR_TIME_VERSION checks now that MIN_PEER_PROTO_VERSION is greater 2020-06-23 00:49:50 -07:00
Aaron Hook
1cabbddbca refactor: Use uint16_t instead of unsigned short
removed trailing whitespace to make linter happy
2020-06-22 12:12:22 +02:00
MarcoFalke
fa3365430c
net: Use mockable time for ping/pong, add tests 2020-06-19 07:25:36 -04:00
MarcoFalke
62948caf44
Merge #18937: refactor: s/command/msg_type/ in CNetMsgMaker and CSerializedNetMsg
51e9393c1f refactor: s/command/msg_type/ in CNetMsgMaker and CSerializedNetMsg (Sebastian Falbesoner)

Pull request description:

  Follow-up PR for #18533 -- another small step towards getting rid of the confusing "command" terminology. Also see PR #18610 which tackled the functional tests.

ACKs for top commit:
  MarcoFalke:
    ACK 51e9393c1f

Tree-SHA512: bb6f05a7be6823d5c4eab1d05b31fee944e700946827ad9425d59a3957fd879776c88c606319cbe9832d9451b275baedf913b71429ea3e01e4e82bf2d419e819
2020-06-19 06:54:24 -04:00
MarcoFalke
fa9604c46f
doc: noban precludes maxuploadtarget disconnects 2020-06-04 16:39:23 -04:00
Anthony Towns
5cb7ee67a5 net: improve code documentation for dns seed behaviour 2020-05-30 02:07:48 +10:00
fanquake
73407ff65c
Merge #16939: p2p: Delay querying DNS seeds
96954d1794 DNS seeds: don't query DNS while network is inactive (Anthony Towns)
fa5894f7f5 DNS seeds: wait for 5m instead of 11s if 1000+ peers are known (Anthony Towns)

Pull request description:

  Changes the logic for querying DNS seeds: after this PR, if there's less than 1000 entries in addrman, it will still usually query DNS seeds after 11s (unless the first few peers tried mostly succeed), but if there's more than 1000 entries it won't try DNS seeds until 5 minutes have passed without getting multiple outbound peers. (If there's 0 entries in addrman, it will still immediately query the DNS seeds). Additionally, delays querying DNS seeds while the p2p network is not active.

  Fixes #15434

ACKs for top commit:
  fanquake:
    ACK 96954d1794 - Ran some tests of different scenarios. More documentation is being added in #19084.
  ariard:
    Tested ACK 96954d1, on Debian 9.1. Both MANY_PEERS/FEW_PEERS cases work.
  Sjors:
    tACK 96954d1 (rebased on master) on macOS 10.15.4. It found it useful to run with `-debug=addrman` and change `DNSSEEDS_DELAY_MANY_PEERS` to something lower to test the behaviour, as well as renaming `peers.dat` to test the peer threshold.
  naumenkogs:
    utACK 96954d1794

Tree-SHA512: 73693db3da73bf8e76c3df9e9c82f0a7fb08049187356eac2575c4ffa455f76548dd1c86a11fc6beea8a3baf0ba020e047bebe927883c731383ec72442356005
2020-05-29 18:24:09 +08:00
MarcoFalke
55b4c65bd1
Merge #16127: More thread safety annotation coverage
5478d6c099 logging: thread safety annotations (Anthony Towns)
e685ca1992 util/system.cpp: add thread safety annotations for dir_locks (Anthony Towns)
a788789948 test/checkqueue_tests: thread safety annotations (Anthony Towns)
479c5846f7 rpc/blockchain.cpp: thread safety annotations for latestblock (Anthony Towns)
8b5af3d4c1 net: fMsgProcWake use LOCK instead of lock_guard (Anthony Towns)
de7c5f41ab wallet/wallet.h: Remove mutexScanning which was only protecting a single atomic bool (Anthony Towns)
c3cf2f5501 rpc/blockchain.cpp: Remove g_utxosetscan mutex that is only protecting a single atomic variable (Anthony Towns)

Pull request description:

  In a few cases we need to use `std::mutex` rather than the sync.h primitives. But `std::lock_guard<std::mutex>` doesn't include the clang thread safety annotations unless you also use clang's C library, which means you can't indicate when variables should be guarded by `std::mutex` mutexes.

  This adds an annotated version of `std::lock_guard<std::mutex>` to threadsafety.h to fix that, and modifies places where `std::mutex` is used to take advantage of the annotations.

  It's based on top of #16112, and turns the thread safety comments included there into annotations.

  It also changes the RAII classes in wallet/wallet.h and rpc/blockchain.cpp to just use the atomic<bool> flag for synchronisation rather than having a mutex that doesn't actually guard anything as well.

ACKs for top commit:
  MarcoFalke:
    ACK 5478d6c099 🗾
  hebasto:
    re-ACK 5478d6c099, only renamed s/`MutexGuard`/`LockGuard`/, and dropped the commit "test/util_threadnames_tests: add thread safety annotations" since the [previous](https://github.com/bitcoin/bitcoin/pull/16127#pullrequestreview-414184113) review.
  ryanofsky:
    Code review ACK 5478d6c099. Thanks for taking suggestions! Only changes since last review are dropping thread rename test commit d53072ec730d8eec5a5b72f7e65a54b141e62b19 and renaming mutex guard to lock guard

Tree-SHA512: 7b00d31f6f2b5a222ec69431eb810a74abf0542db3a65d1bbad54e354c40df2857ec89c00b4a5e466c81ba223267ca95f3f98d5fbc1a1d052a2c3a7d2209790a
2020-05-27 19:31:33 -04:00
Anthony Towns
8b5af3d4c1 net: fMsgProcWake use LOCK instead of lock_guard 2020-05-19 16:33:10 +10:00
Sebastian Falbesoner
51e9393c1f refactor: s/command/msg_type/ in CNetMsgMaker and CSerializedNetMsg 2020-05-11 00:20:57 +02:00
Jon Atack
83da576f44
net: use CMessageHeader::HEADER_SIZE, add missing include
static constexpr CMessageHeader::HEADER_SIZE is already used in this file,
src/net.cpp, in 2 instances. This commit replaces the remaining 2 integer
values with it and adds the explicit include header.

Co-authored by: Gleb Naumenko <naumenko.gs@gmail.com>
2020-05-10 15:58:42 +02:00
Hennadii Stepanov
917ca93553
Make ThreadSafe{MessageBox|Question} bilingual 2020-05-05 04:45:59 +03:00
MarcoFalke
fa369651c5
net: Add missing cs_vNodes lock 2020-03-29 11:45:46 -04:00
Anthony Towns
96954d1794 DNS seeds: don't query DNS while network is inactive 2020-03-17 12:10:47 +10:00
Anthony Towns
fa5894f7f5 DNS seeds: wait for 5m instead of 11s if 1000+ peers are known
If 1000 potential peers are known, wait for 5m before querying DNS seeds
for more peers, since eventually the addresses we already know should
get us connected. Also check every 11s whether we've got enough active
outbounds that DNS seeds aren't worth querying, and exit the dnsseed
thread early if so.
2020-03-17 11:33:07 +10:00
MarcoFalke
fadafb83cf
scheduler: Make schedule* methods type safe 2020-03-10 09:47:32 -04:00
Ben Woosley
7a810b1d7a
refactor: Convert ping wait time from double to int64_t 2020-03-04 13:45:29 -05:00
Ben Woosley
e6fc63ec7e
refactor: Convert min ping time from double to int64_t 2020-03-04 13:44:57 -05:00
Ben Woosley
b054c46977
refactor: Convert ping time from double to int64_t 2020-03-04 13:44:25 -05:00
MarcoFalke
eca4d8ef6a
Merge #16562: Refactor message transport packaging
16d6113f4f Refactor message transport packaging (Jonas Schnelli)

Pull request description:

  This PR factors out transport packaging logic from `CConnman::PushMessage()`.
  It's similar to #16202 (where we refactor deserialization).

  This allows implementing a new message transport protocol like BIP324.

ACKs for top commit:
  dongcarl:
    ACK 16d6113f4f FWIW
  ariard:
    Code review ACK 16d6113
  elichai:
    semiACK 16d6113f4f ran functional+unit tests.
  MarcoFalke:
    ACK 16d6113f4f 🙎

Tree-SHA512: 8c2f8ab9f52e9b94327973ae15019a08109d5d9f9247492703a842827c5b5d634fc0411759e0bb316d824c586614b0220c2006410851933613bc143e58f7e6c1
2020-02-28 17:01:58 -05:00
Pieter Wuille
6f8c937312 Mark asmap const in statistics code 2020-01-31 14:51:37 -08:00
Wladimir J. van der Laan
01fc5891fb
Merge #16702: p2p: supplying and using asmap to improve IP bucketing in addrman
3c1bc40205 Add extra logging of asmap use and bucketing (Gleb Naumenko)
e4658aa8ea Return mapped AS in RPC call getpeerinfo (Gleb Naumenko)
ec45646de9 Integrate ASN bucketing in Addrman and add tests (Gleb Naumenko)
8feb4e4b66  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 3c1bc40205
  jamesob:
    ACK 3c1bc40205 ([`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 3c1bc40205

Tree-SHA512: e2dc6171188d5cdc2ab2c022fa49ed73a14a0acb8ae4c5ffa970172a0365942a249ad3d57e5fb134bc156a3492662c983f74bd21e78d316629dcadf71576800c
2020-01-29 13:55:43 +01:00
Gleb Naumenko
e4658aa8ea Return mapped AS in RPC call getpeerinfo
If ASN bucketing is used, return a corresponding AS
used in bucketing for a given peer.
2020-01-23 14:22:56 -05:00
Jonas Schnelli
16d6113f4f
Refactor message transport packaging 2020-01-22 14:55:24 -05:00
Wladimir J. van der Laan
1ae46dce60
Merge #17754: net: Don't allow resolving of std::string with embedded NUL characters. Add tests.
7a046cdc14 tests: Avoid using C-style NUL-terminated strings as arguments (practicalswift)
fefb9165f2 tests: Add tests to make sure lookup methods fail on std::string parameters with embedded NUL characters (practicalswift)
9574de86ad net: Avoid using C-style NUL-terminated strings as arguments in the netbase interface (practicalswift)

Pull request description:

  Don't allow resolving of `std::string`:s with embedded `NUL` characters.

  Avoid using C-style `NUL`-terminated strings as arguments in the `netbase` interface

  Add tests.

  The only place in where C-style `NUL`-terminated strings are actually needed is here:

  ```diff
  +    if (!ValidAsCString(name)) {
  +        return false;
  +    }
  ...
  -    int nErr = getaddrinfo(pszName, nullptr, &aiHint, &aiRes);
  +    int nErr = getaddrinfo(name.c_str(), nullptr, &aiHint, &aiRes);
       if (nErr)
           return false;
  ```

  Interface changes:

  ```diff
  -bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);
  +bool LookupHost(const std::string& name, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);

  -bool LookupHost(const char *pszName, CNetAddr& addr, bool fAllowLookup);
  +bool LookupHost(const std::string& name, CNetAddr& addr, bool fAllowLookup);

  -bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup);
  +bool Lookup(const std::string& name, CService& addr, int portDefault, bool fAllowLookup);

  -bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);
  +bool Lookup(const std::string& name, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);

  -bool LookupSubNet(const char *pszName, CSubNet& subnet);
  +bool LookupSubNet(const std::string& strSubnet, CSubNet& subnet);

  -CService LookupNumeric(const char *pszName, int portDefault = 0);
  +CService LookupNumeric(const std::string& name, int portDefault = 0);

  -bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, const SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed);
  +bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, const SOCKET& hSocketRet, int nTimeout, bool& outProxyConnectionFailed);
  ```

  It should be noted that the `ConnectThroughProxy` change (from `bool *outProxyConnectionFailed` to `bool& outProxyConnectionFailed`) has nothing to do with `NUL` handling but I thought it was worth doing when touching this file :)

ACKs for top commit:
  EthanHeilman:
    ACK 7a046cdc14
  laanwj:
    ACK 7a046cdc14

Tree-SHA512: 66556e290db996917b54091acd591df221f72230f6b9f6b167b9195ee870ebef6e26f4cda2f6f54d00e1c362e1743bf56785d0de7cae854e6bf7d26f6caccaba
2020-01-22 20:20:45 +01:00
MarcoFalke
e09c701e01 scripted-diff: Bump copyright of files changed in 2020
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
2020-01-15 02:18:00 +07:00
MarcoFalke
6cbe620964 scripted-diff: Replace CCriticalSection with RecursiveMutex
-BEGIN VERIFY SCRIPT-
 # Delete outdated alias for RecursiveMutex
 sed -i -e '/CCriticalSection/d'                 ./src/sync.h
 # Replace use of outdated alias with RecursiveMutex
 sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-
2020-01-15 01:43:46 +07:00
practicalswift
9574de86ad net: Avoid using C-style NUL-terminated strings as arguments in the netbase interface 2020-01-08 12:35:59 +00:00
Gleb Naumenko
ec45646de9 Integrate ASN bucketing in Addrman and add tests
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.
2019-12-25 08:59:08 -05:00
Matt Corallo
02d8c56a18 Seed RNG with precision timestamps on receipt of net messages. 2019-11-23 16:06:34 -05:00
MarcoFalke
8f9df2ed88
Merge #17164: p2p: Avoid allocating memory for addrKnown where we don't need it
b6d2183858 Minor refactoring to remove implied m_addr_relay_peer. (User)
a552e8477c added asserts to check m_addr_known when it's used (User)
090b75c14b p2p: Avoid allocating memory for addrKnown where we don't need it (User)

Pull request description:

  We should allocate memory for addrKnown filter only for those peers which are expected to participate in address relay.

  Currently, we do it for all peers (including SPV and block-relay-only),  which results in extra RAM where it's not needed.

  Upd:
  In future, we would still allow SPVs to ask for addrs, so allocation still will be done by default.
  However, they will be able to opt-out via [this proposal](https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-October/017428.html) and then we could save some more memory.
  This PR still saves memory for block-relay-only peers immediately after merging.

Top commit has no ACKs.

Tree-SHA512: e84d93b2615556d466f5ca0e543580fde763911a3bfea3127c493ddfaba8f05c8605cb94ff795d165af542b594400995a2c51338185c298581408687e7812463
2019-11-04 11:17:20 -05:00
User
b6d2183858 Minor refactoring to remove implied m_addr_relay_peer.
Co-authored-by: MarcoFalke <falke.marco@gmail.com>
2019-10-31 13:42:02 -04:00
MarcoFalke
4c1090c882
Merge #17279: refactor: Remove redundant c_str() calls in formatting
c72906dcc1 refactor: Remove redundant c_str() calls in formatting (Wladimir J. van der Laan)

Pull request description:

  Our formatter, tinyformat, *never* needs `c_str()` for strings. Still, many places call it redundantly, resulting in longer code and a slight overhead.

  Remove redundant `c_str()` calls for:

  - `strprintf`
  - `LogPrintf`
  - `tfm::format`

  (also, combined with #17095, I think this improves logging in case of unexpected embedded NULL characters)

ACKs for top commit:
  ryanofsky:
    Code review ACK c72906dcc1. Easy to review with `git log -p -n1 --word-diff-regex=. -U0 c72906dcc11a73fa06a0adf97557fa756b551bee`

Tree-SHA512: 9e21e7bed8aaff59b8b8aa11571396ddc265fb29608c2545b1fcdbbb36d65b37eb361db6688dd36035eab0c110f8de255375cfda50df3d9d7708bc092f67fefc
2019-10-28 15:10:06 -04:00
fanquake
badca85e2c
Merge #16202: p2p: Refactor network message deserialization
ed2dc5e48a Add override/final modifiers to V1TransportDeserializer (Pieter Wuille)
f342a5e61a Make resetting implicit in TransportDeserializer::Read() (Pieter Wuille)
6a91499496 Remove oversized message detection from log and interface (Pieter Wuille)
b0e10ff4df Force CNetMessage::m_recv to use std::move (Jonas Schnelli)
efecb74677 Use adapter pattern for the network deserializer (Jonas Schnelli)
1a5c656c31 Remove transport protocol knowhow from CNetMessage / net processing (Jonas Schnelli)
6294ecdb8b Refactor: split network transport deserializing from message container (Jonas Schnelli)

Pull request description:

  **This refactors the network message deserialization.**

  * It transforms the `CNetMessage` into a transport protocol agnostic message container.
  * A new class `TransportDeserializer` (unique pointer of `CNode`)  is introduced, handling the network buffer reading and the decomposing to a `CNetMessage`
  * **No behavioral changes** (in terms of disconnecting, punishing)
  * Moves the checksum finalizing into the `SocketHandler` thread (finalizing was in `ProcessMessages` before)

  The **optional last commit** makes the `TransportDeserializer` following an adapter pattern (polymorphic interface) to make it easier to later add a V2 transport protocol deserializer.

  Intentionally not touching the sending part.

  Pre-Requirement for BIP324 (v2 message transport protocol).
  Replacement for #14046 and inspired by a [comment](https://github.com/bitcoin/bitcoin/pull/14046#issuecomment-431528330) from sipa

ACKs for top commit:
  promag:
    Code review ACK ed2dc5e48a.
  marcinja:
    Code review ACK ed2dc5e48a
  ryanofsky:
    Code review ACK ed2dc5e48a. 4 cleanup commits added since last review. Unaddressed comments:
  ariard:
    Code review and tested ACK ed2dc5e.

Tree-SHA512: bab8d87464e2e8742529e488ddcdc8650f0c2025c9130913df00a0b17ecdb9a525061cbbbd0de0251b76bf75a8edb72e3ad0dbf5b79e26f2ad05d61b4e4ded6d
2019-10-28 09:15:59 -04:00
Wladimir J. van der Laan
c72906dcc1 refactor: Remove redundant c_str() calls in formatting
Our formatter, tinyformat, *never* needs `c_str()` for strings.
Remove redundant `c_str()` calls for:

- `strprintf`
- `LogPrintf`
- `tfm::format`
2019-10-28 13:31:33 +01:00
Sjors Provoost
04dbdd613f
[net] SocketHandler: log peer id for close and disconnect 2019-10-25 20:05:30 +02:00
Pieter Wuille
f342a5e61a
Make resetting implicit in TransportDeserializer::Read() 2019-10-23 09:27:32 +02:00
Pieter Wuille
6a91499496
Remove oversized message detection from log and interface 2019-10-23 09:27:25 +02:00
Jonas Schnelli
efecb74677
Use adapter pattern for the network deserializer 2019-10-18 08:56:08 +02:00
Jonas Schnelli
1a5c656c31
Remove transport protocol knowhow from CNetMessage / net processing 2019-10-18 08:56:08 +02:00
Jonas Schnelli
6294ecdb8b
Refactor: split network transport deserializing from message container 2019-10-18 08:56:06 +02:00
User
090b75c14b p2p: Avoid allocating memory for addrKnown where we don't need it 2019-10-16 17:06:20 -04:00
practicalswift
084e17cebd Remove unused includes 2019-10-15 22:56:43 +00:00
fanquake
3ce8298888
Merge #15558: Don't query all DNS seeds at once
6170ec5d3a Do not query all DNS seed at once (Pieter Wuille)

Pull request description:

  Before this PR, when we don't have enough connections after 11 seconds, we proceed to query all DNS seeds in a fixed order, loading responses from all of them.

  Change this to to only query three randomly-selected DNS seed. If 11 seconds later we still don't have enough connections, try again with another one, and so on.

  This reduces the amount of information DNS seeds can observe about the requesters by spreading the load over all of them.

ACKs for top commit:
  Sjors:
    ACK 6170ec5d3
  sdaftuar:
    ACK 6170ec5d3a
  jonasschnelli:
    utACK 6170ec5d3a - I think the risk of a single seeder codebase is orthogonal to this PR. Such risks could also be interpreted differently (diversity could also increase the risk based on the threat model).
  fanquake:
    ACK 6170ec5d3a - Agree with the reasoning behind the change. Did some testing with and without `-forcednsseed` and/or a `peers.dat` and monitored the DNS activity.

Tree-SHA512: 33f6be5f924a85d312303ce272aa8f8d5e04cb616b4b492be98832e3ff37558d13d2b16ede68644ad399aff2bf5ff0ad33844e55eb40b7f8e3fddf9ae43add57
2019-09-23 12:53:50 +08:00
fanquake
189c19e012
Merge #15759: p2p: Add 2 outbound block-relay-only connections
0ba08020c9 Disconnect peers violating blocks-only mode (Suhas Daftuar)
937eba91e1 doc: improve comments relating to block-relay-only peers (Suhas Daftuar)
430f489027 Don't relay addr messages to block-relay-only peers (Suhas Daftuar)
3a5e885306 Add 2 outbound block-relay-only connections (Suhas Daftuar)
b83f51a4bb Add comment explaining intended use of m_tx_relay (Suhas Daftuar)
e75c39cd42 Check that tx_relay is initialized before access (Suhas Daftuar)
c4aa2ba822 [refactor] Change tx_relay structure to be unique_ptr (Suhas Daftuar)
4de0dbac9b [refactor] Move tx relay state to separate structure (Suhas Daftuar)
26a93bce29 Remove unused variable (Suhas Daftuar)

Pull request description:

  Transaction relay is optimized for a combination of redundancy/robustness as well as bandwidth minimization -- as a result transaction relay leaks information that adversaries can use to infer the network topology.

  Network topology is better kept private for (at least) two reasons:

  (a) Knowledge of the network graph can make it easier to find the source IP of a given transaction.

  (b) Knowledge of the network graph could be used to split a target node or nodes from the honest network (eg by knowing which peers to attack in order to achieve a network split).

  We can eliminate the risks of (b) by separating block relay from transaction relay; inferring network connectivity from the relay of blocks/block headers is much more expensive for an adversary.

  After this commit, bitcoind will make 2 additional outbound connections that are only used for block relay. (In the future, we might consider rotating our transaction-relay peers to help limit the effects of (a).)

ACKs for top commit:
  sipa:
    ACK 0ba08020c9
  ajtowns:
    ACK 0ba08020c9 -- code review, ran tests. ran it on mainnet for a couple of days with MAX_BLOCKS_ONLY_CONNECTIONS upped from 2 to 16 and didn't observe any unexpected behaviour: it disconnected a couple of peers that tried sending inv's, and it successfully did compact block relay with some block relay peers.
  TheBlueMatt:
    re-utACK 0ba08020c9. Pointed out that stats.fRelayTxes was sometimes uninitialized for blocksonly peers (though its not a big deal and only effects RPC), which has since been fixed here. Otherwise changes are pretty trivial so looks good.
  jnewbery:
    utACK 0ba08020c9
  jamesob:
    ACK 0ba08020c9

Tree-SHA512: 4c3629434472c7dd4125253417b1be41967a508c3cfec8af5a34cad685464fbebbb6558f0f8f5c0d4463e3ffa4fa3aabd58247692cb9ab8395f4993078b9bcdf
2019-09-07 17:45:03 +08:00
Suhas Daftuar
430f489027 Don't relay addr messages to block-relay-only peers
We don't want relay of addr messages to leak information about
these network links.
2019-09-04 14:58:36 -04:00
Suhas Daftuar
3a5e885306 Add 2 outbound block-relay-only connections
Transaction relay is primarily optimized for balancing redundancy/robustness
with bandwidth minimization -- as a result transaction relay leaks information
that adversaries can use to infer the network topology.

Network topology is better kept private for (at least) two reasons:

(a) Knowledge of the network graph can make it easier to find the source IP of
a given transaction.

(b) Knowledge of the network graph could be used to split a target node or
nodes from the honest network (eg by knowing which peers to attack in order to
achieve a network split).

We can eliminate the risks of (b) by separating block relay from transaction
relay; inferring network connectivity from the relay of blocks/block headers is
much more expensive for an adversary.

After this commit, bitcoind will make 2 additional outbound connections that
are only used for block relay. (In the future, we might consider rotating our
transaction-relay peers to help limit the effects of (a).)
2019-09-04 14:58:36 -04:00
Suhas Daftuar
e75c39cd42 Check that tx_relay is initialized before access 2019-09-04 14:58:34 -04:00
Suhas Daftuar
c4aa2ba822 [refactor] Change tx_relay structure to be unique_ptr 2019-08-28 13:41:58 -04:00
Suhas Daftuar
4de0dbac9b [refactor] Move tx relay state to separate structure 2019-08-28 13:41:58 -04:00
nicolas.dorier
ce7eac3cb0
[Fix] The default whitelistrelay should be true 2019-08-17 00:43:22 +09:00
nicolas.dorier
dc7529abf0
[Fix] Allow connection of a noban banned peer 2019-08-15 22:40:32 +09:00
nicolas.dorier
d541fa3918
Replace the use of fWhitelisted by permission checks 2019-08-11 11:33:28 +09:00
nicolas.dorier
e5b26deaaa
Make whitebind/whitelist permissions more flexible 2019-08-11 11:33:27 +09:00
Pieter Wuille
6170ec5d3a Do not query all DNS seed at once
Instead, when necessary, query 3. If that leads to a sufficient number
of connects, stop. If not, query 3 more, and so on.
2019-08-06 17:22:53 -07:00
Wladimir J. van der Laan
b21acab82f
Merge #15993: net: Drop support of the insecure miniUPnPc versions
59cb722fd0 Update configure to reject unsafe miniUPnPc API ver (Hennadii Stepanov)
ab2190557e doc: Add release notes for 15993 (Hennadii Stepanov)
02709e9560 Align formatting with clang-format (Hennadii Stepanov)
91a1b85083 Use PACKAGE_NAME in UPnP description (Hennadii Stepanov)
9f76e45b9d Drop support of insecure miniUPnPc versions (Hennadii Stepanov)

Pull request description:

  1. Minimum supported miniUPnPc API version is set to 10:
  - https://packages.ubuntu.com/xenial/libminiupnpc-dev
  - https://packages.debian.org/jessie/libminiupnpc-dev

  Refs:
  - #6583
  - #6789
  - #10414

  2. The hardcoded "Bitcoin" replaced with `PACKAGE_NAME`:
  ![Screenshot from 2019-05-06 23-10-29](https://user-images.githubusercontent.com/32963518/57253178-afc60780-7056-11e9-83c9-e85670c58c1e.png)

  3. Also style-only commit applied.

  Pardon: could not reopen my previous PR #15966.

ACKs for top commit:
  ryanofsky:
    utACK 59cb722fd0. Changes since last review: adding a new commit which updates configure script to fall back to disabling upnp if version is too old, adding a requested comment explaining static_assert condition, and fixing a spelling (jessy/jessie)

Tree-SHA512: 42ed11bc2fb2ec83d5dd58e2383da5444a24fd572707f6cf10b622cb8943e28adfcca4750d06801024c4472625b5ea9279516fbd9d2ccebc9bbaafe1d148e80d
2019-07-29 16:51:36 +02:00
Hennadii Stepanov
753f7cccce
scripted-diff: Make translation bilingual
-BEGIN VERIFY SCRIPT-
sed -i 's/inline std::string _(const char\* psz)/inline bilingual_str _(const char\* psz)/' src/util/translation.h
sed -i 's/return G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz;/return bilingual_str{psz, G_TRANSLATION_FUN ? (G_TRANSLATION_FUN)(psz) : psz};/' src/util/translation.h
sed -i 's/\b_("\([^"]\|\\"\)*")/&.translated/g' $(git grep --files-with-matches '\b_("' src)
echo Hard cases - multiline strings.
sed -i 's/"Visit %s for further information about the software.")/&.translated/g' src/init.cpp
sed -i "s/\"Only rebuild the block database if you are sure that your computer's date and time are correct\")/&.translated/g" src/init.cpp
sed -i 's/" restore from a backup.")/&.translated/g' src/wallet/db.cpp
sed -i 's/" or address book entries might be missing or incorrect.")/&.translated/g' src/wallet/wallet.cpp
echo Special case.
sed -i 's/_(COPYRIGHT_HOLDERS)/&.translated/' src/util/system.cpp test/lint/lint-format-strings.py
-END VERIFY SCRIPT-
2019-07-24 16:33:20 +03:00
Hennadii Stepanov
0b86e517ad
Refactor out translation.h
This is a prerequisite for introducing bilingual error messages.
Note: #includes are arranged by clang-format-diff.py script.
2019-07-24 16:32:53 +03:00
MarcoFalke
fabe87d2c9
scripted-diff: Avoid passing PACKAGE_NAME for translation
-BEGIN VERIFY SCRIPT-
sed -i --regexp-extended -e 's/\<\w+(::\w+)?\(PACKAGE_NAME\)/PACKAGE_NAME/g' $(git grep -l --extended-regexp '\<\w+(::\w+)?\(PACKAGE_NAME\)' src)
-END VERIFY SCRIPT-
2019-06-26 11:01:57 -04:00
Hennadii Stepanov
02709e9560
Align formatting with clang-format 2019-06-07 09:38:44 +02:00
Hennadii Stepanov
91a1b85083
Use PACKAGE_NAME in UPnP description 2019-06-07 09:38:44 +02:00
Hennadii Stepanov
9f76e45b9d
Drop support of insecure miniUPnPc versions
The minimum supported miniUPnPc API version is set to 10.
2019-06-07 09:37:33 +02:00
practicalswift
0959d37e3e Don't use global (external) symbols for symbols that are used in only one translation unit 2019-06-06 07:45:56 +02:00
MarcoFalke
fa1dce7329
net: Rename ::fRelayTxes to ::g_relay_txes
This helps to distinguish it from CNode::fRelayTxes and avoid bugs like
425278d17b
2019-05-09 09:10:53 -04:00
MarcoFalke
fa8548c5d1
net: Remove unused unsanitized user agent string CNode::strSubVer 2019-03-23 11:32:40 -04:00
Suhas Daftuar
20e6ea259b [addrman] Improve collision logging and address nits 2019-03-01 16:15:50 -05:00
Suhas Daftuar
4991e3c813 [net] feeler connections can be made to outbound peers in same netgroup
Fixes a bug where feelers could be stuck trying to resolve a collision in the
tried table that is to an address in the same netgroup as an existing outbound peer.

Thanks to Muoi Tran for the original bug report and detailed debug logs to track
this down.
2019-02-27 09:30:13 -05:00
Gleb Naumenko
1cff3d6cb0 Change in transaction pull scheduling to prevent InvBlock-related attacks
Co-authored-by: Suhas Daftuar <sdaftuar@gmail.com>
2019-02-06 20:25:27 -08:00
Wladimir J. van der Laan
3a573fd46c
Merge #14922: windows: Set _WIN32_WINNT to 0x0601 (Windows 7)
0164b0f5cf build: Remove WINVER pre define in Makefile.leveldb.inlcude (Chun Kuan Lee)
d0522ec94e Drop defunct Windows compat fixes (Ben Woosley)
d8a2992067 windows: Call SetProcessDEPPolicy directly (Chun Kuan Lee)
1bd9ffdd44 windows: Set _WIN32_WINNT to 0x0601 (Windows 7) (Chun Kuan Lee)

Pull request description:

  The current minimum support Windows version is Vista. So set it to 0x0600
  5a88def8ad/mingw-w64-headers/include/sdkddkver.h (L19)

Tree-SHA512: 38e2afc79426ae547131c8ad3db2e0a7f54a95512f341cfa0c06e4b2fe79521ae67d2795ef96b0192e683e4f1ba6183c010d7b4b8d6b3e68b9bf48c374c59e7d
2019-02-05 18:15:01 +01:00
Carl Dong
107623c26c net: Correct comparison of addr count
LOCAL_NONE is supposed to be an enum indicating the score of a
LocalServiceInfo rather than the count of an addr in mapLocalHost.
2019-02-04 13:12:20 -05:00
Ben Woosley
d0522ec94e
Drop defunct Windows compat fixes
"The AI_ADDRCONFIG flag is defined on the Windows SDK for Windows Vista
and later. The AI_ADDRCONFIG flag is supported on Windows Vista and
later."
https://docs.microsoft.com/en-us/windows/desktop/api/ws2tcpip/nf-ws2tcpip-getaddrinfo

However, the version of MinGW we use on Travis is not current and does
not carry the relevant definition, as such I defined it in compat.
https://github.com/wine-mirror/wine/blob/master/include/ws2tcpip.h

Testing confirms that the PROTECTION_LEVEL_UNRESTRICTED,
IPV6_PROTECTION_LEVEL, PROCESS_DEP_ENABLE, AI_ADDRCONFIG, are now
supported by the version of Windows that we test against, so can be
removed.
https://travis-ci.org/bitcoin/bitcoin/jobs/483255439
https://travis-ci.org/Empact/bitcoin/jobs/484123087
2019-01-24 15:58:49 -08:00
Gregory Maxwell
0297be61ac Allow connections from misbehavior banned peers.
This allows incoming connections from peers which are only banned
 due to an automatic misbehavior ban if doing so won't fill inbound.

These peers are preferred for eviction when inbound fills, but may
 still be kept if they fall into the protected classes.  This
 eviction preference lasts the entire life of the connection even
 if the ban expires.

If they misbehave again they'll still get disconnected.

The main purpose of banning on misbehavior is to prevent our
 connections from being wasted on unhelpful peers such as ones
 running incompatible consensus rules.  For inbound peers this
 can be better accomplished with eviction preferences.

A secondary purpose was to reduce resource waste from repeated
 abuse but virtually any attacker can get a nearly unlimited
 supply of addresses, so disconnection is about the best we can
 do.
2019-01-22 21:10:48 +00:00
Cory Fields
af3503d903 net: move BanMan to its own files 2019-01-16 13:54:18 -05:00
Cory Fields
d0469b2e93 banman: pass in default ban time as a parameter
Removes the dependency on arg parsing.
2019-01-16 13:54:18 -05:00