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merge bitcoin#20966: save the banlist in a JSON format on disk
This commit is contained in:
parent
0e2ca7d3a5
commit
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@ -56,7 +56,8 @@ Subdirectory | File(s) | Description
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`./` | `anchors.dat` | Anchor IP address database, created on shutdown and deleted at startup. Anchors are last known outgoing block-relay-only peers that are tried to re-connect to on startup
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`evodb/` | |special txes and quorums database
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`llmq/` | |quorum signatures database
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`./` | `banlist.dat` | Stores the IPs/subnets of banned nodes
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`./` | `banlist.dat` | Stores the addresses/subnets of banned nodes (deprecated). `dashd` or `dash-qt` no longer save the banlist to this file, but read it on startup if `banlist.json` is not present.
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`./` | `banlist.json` | Stores the addresses/subnets of banned nodes.
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`./` | `dash.conf` | User-defined [configuration settings](dash-conf.md) for `dashd` or `dash-qt`. File is not written to by the software and must be created manually. Path can be specified by `-conf` option
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`./` | `dashd.pid` | Stores the process ID (PID) of `dashd` or `dash-qt` while running; created at start and deleted on shutdown; can be specified by `-pid` option
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`./` | `debug.log` | Contains debug information and general logging generated by `dashd` or `dash-qt`; can be specified by `-debuglogfile` option
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@ -111,7 +112,7 @@ Subdirectory | File | Description
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## Legacy subdirectories and files
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These subdirectories and files are no longer used by the Dash Core:
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These subdirectories and files are no longer used by Dash Core:
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Path | Description | Repository notes
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---------------|-------------|-----------------
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103
src/addrdb.cpp
103
src/addrdb.cpp
@ -10,15 +10,74 @@
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#include <clientversion.h>
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#include <hash.h>
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#include <logging/timer.h>
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#include <netbase.h>
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#include <random.h>
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#include <streams.h>
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#include <tinyformat.h>
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#include <univalue.h>
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#include <util/settings.h>
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#include <util/system.h>
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#include <cstdint>
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CBanEntry::CBanEntry(const UniValue& json)
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: nVersion(json["version"].get_int()), nCreateTime(json["ban_created"].get_int64()),
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nBanUntil(json["banned_until"].get_int64())
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{
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}
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UniValue CBanEntry::ToJson() const
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{
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UniValue json(UniValue::VOBJ);
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json.pushKV("version", nVersion);
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json.pushKV("ban_created", nCreateTime);
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json.pushKV("banned_until", nBanUntil);
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return json;
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}
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namespace {
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static const char* BANMAN_JSON_ADDR_KEY = "address";
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/**
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* Convert a `banmap_t` object to a JSON array.
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* @param[in] bans Bans list to convert.
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* @return a JSON array, similar to the one returned by the `listbanned` RPC. Suitable for
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* passing to `BanMapFromJson()`.
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*/
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UniValue BanMapToJson(const banmap_t& bans)
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{
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UniValue bans_json(UniValue::VARR);
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for (const auto& it : bans) {
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const auto& address = it.first;
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const auto& ban_entry = it.second;
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UniValue j = ban_entry.ToJson();
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j.pushKV(BANMAN_JSON_ADDR_KEY, address.ToString());
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bans_json.push_back(j);
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}
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return bans_json;
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}
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/**
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* Convert a JSON array to a `banmap_t` object.
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* @param[in] bans_json JSON to convert, must be as returned by `BanMapToJson()`.
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* @param[out] bans Bans list to create from the JSON.
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* @throws std::runtime_error if the JSON does not have the expected fields or they contain
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* unparsable values.
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*/
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void BanMapFromJson(const UniValue& bans_json, banmap_t& bans)
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{
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for (const auto& ban_entry_json : bans_json.getValues()) {
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CSubNet subnet;
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const auto& subnet_str = ban_entry_json[BANMAN_JSON_ADDR_KEY].get_str();
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if (!LookupSubNet(subnet_str, subnet)) {
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throw std::runtime_error(
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strprintf("Cannot parse banned address or subnet: %s", subnet_str));
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}
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bans.insert_or_assign(subnet, CBanEntry{ban_entry_json});
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}
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}
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template <typename Stream, typename Data>
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bool SerializeDB(Stream& stream, const Data& data)
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{
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@ -120,18 +179,54 @@ bool DeserializeFileDB(const fs::path& path, Data& data, int version)
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}
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} // namespace
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CBanDB::CBanDB(fs::path ban_list_path) : m_ban_list_path(std::move(ban_list_path))
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CBanDB::CBanDB(fs::path ban_list_path)
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: m_banlist_dat(ban_list_path.string() + ".dat"),
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m_banlist_json(ban_list_path.string() + ".json")
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{
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}
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bool CBanDB::Write(const banmap_t& banSet)
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{
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return SerializeFileDB("banlist", m_ban_list_path, banSet, CLIENT_VERSION);
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std::vector<std::string> errors;
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if (util::WriteSettings(m_banlist_json, {{JSON_KEY, BanMapToJson(banSet)}}, errors)) {
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return true;
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}
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for (const auto& err : errors) {
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error("%s", err);
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}
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return false;
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}
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bool CBanDB::Read(banmap_t& banSet)
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bool CBanDB::Read(banmap_t& banSet, bool& dirty)
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{
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return DeserializeFileDB(m_ban_list_path, banSet, CLIENT_VERSION);
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// If the JSON banlist does not exist, then try to read the non-upgraded banlist.dat.
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if (!fs::exists(m_banlist_json)) {
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// If this succeeds then we need to flush to disk in order to create the JSON banlist.
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dirty = true;
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return DeserializeFileDB(m_banlist_dat, banSet, CLIENT_VERSION);
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}
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dirty = false;
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std::map<std::string, util::SettingsValue> settings;
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std::vector<std::string> errors;
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if (!util::ReadSettings(m_banlist_json, settings, errors)) {
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for (const auto& err : errors) {
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LogPrintf("Cannot load banlist %s: %s\n", m_banlist_json.string(), err);
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}
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return false;
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}
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try {
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BanMapFromJson(settings[JSON_KEY], banSet);
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} catch (const std::runtime_error& e) {
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LogPrintf("Cannot parse banlist %s: %s\n", m_banlist_json.string(), e.what());
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return false;
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}
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return true;
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}
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CAddrDB::CAddrDB()
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35
src/addrdb.h
35
src/addrdb.h
@ -9,6 +9,7 @@
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#include <fs.h>
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#include <net_types.h> // For banmap_t
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#include <serialize.h>
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#include <univalue.h>
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#include <string>
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#include <vector>
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@ -36,6 +37,13 @@ public:
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nCreateTime = nCreateTimeIn;
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}
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/**
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* Create a ban entry from JSON.
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* @param[in] json A JSON representation of a ban entry, as created by `ToJson()`.
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* @throw std::runtime_error if the JSON does not have the expected fields.
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*/
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explicit CBanEntry(const UniValue& json);
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SERIALIZE_METHODS(CBanEntry, obj)
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{
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uint8_t ban_reason = 2; //! For backward compatibility
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@ -48,6 +56,12 @@ public:
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nCreateTime = 0;
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nBanUntil = 0;
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}
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/**
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* Generate a JSON representation of this ban entry.
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* @return JSON suitable for passing to the `CBanEntry(const UniValue&)` constructor.
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*/
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UniValue ToJson() const;
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};
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/** Access to the (IP) address database (peers.dat) */
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@ -62,15 +76,30 @@ public:
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static bool Read(CAddrMan& addr, CDataStream& ssPeers);
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};
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/** Access to the banlist database (banlist.dat) */
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/** Access to the banlist databases (banlist.json and banlist.dat) */
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class CBanDB
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{
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private:
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const fs::path m_ban_list_path;
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/**
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* JSON key under which the data is stored in the json database.
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*/
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static constexpr const char* JSON_KEY = "banned_nets";
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const fs::path m_banlist_dat;
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const fs::path m_banlist_json;
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public:
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explicit CBanDB(fs::path ban_list_path);
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bool Write(const banmap_t& banSet);
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bool Read(banmap_t& banSet);
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/**
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* Read the banlist from disk.
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* @param[out] banSet The loaded list. Set if `true` is returned, otherwise it is left
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* in an undefined state.
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* @param[out] dirty Indicates whether the loaded list needs flushing to disk. Set if
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* `true` is returned, otherwise it is left in an undefined state.
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* @return true on success
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*/
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bool Read(banmap_t& banSet, bool& dirty);
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};
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/**
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@ -18,20 +18,18 @@ BanMan::BanMan(fs::path ban_file, CClientUIInterface* client_interface, int64_t
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if (m_client_interface) m_client_interface->InitMessage(_("Loading banlist...").translated);
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int64_t n_start = GetTimeMillis();
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m_is_dirty = false;
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banmap_t banmap;
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if (m_ban_db.Read(banmap)) {
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SetBanned(banmap); // thread save setter
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SetBannedSetDirty(false); // no need to write down, just read data
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SweepBanned(); // sweep out unused entries
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if (m_ban_db.Read(m_banned, m_is_dirty)) {
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SweepBanned(); // sweep out unused entries
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LogPrint(BCLog::NET, "Loaded %d banned node ips/subnets from banlist.dat %dms\n",
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m_banned.size(), GetTimeMillis() - n_start);
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LogPrint(BCLog::NET, "Loaded %d banned node addresses/subnets %dms\n", m_banned.size(),
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GetTimeMillis() - n_start);
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} else {
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LogPrintf("Recreating banlist.dat\n");
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SetBannedSetDirty(true); // force write
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DumpBanlist();
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LogPrintf("Recreating the banlist database\n");
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m_banned = {};
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m_is_dirty = true;
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}
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DumpBanlist();
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}
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BanMan::~BanMan()
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@ -53,8 +51,8 @@ void BanMan::DumpBanlist()
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SetBannedSetDirty(false);
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}
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LogPrint(BCLog::NET, "Flushed %d banned node ips/subnets to banlist.dat %dms\n",
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banmap.size(), GetTimeMillis() - n_start);
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LogPrint(BCLog::NET, "Flushed %d banned node addresses/subnets to disk %dms\n", banmap.size(),
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GetTimeMillis() - n_start);
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}
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void BanMan::ClearBanned()
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@ -177,13 +175,6 @@ void BanMan::GetBanned(banmap_t& banmap)
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banmap = m_banned; //create a thread safe copy
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}
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void BanMan::SetBanned(const banmap_t& banmap)
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{
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LOCK(m_cs_banned);
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m_banned = banmap;
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m_is_dirty = true;
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}
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void BanMan::SweepBanned()
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{
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int64_t now = GetTime();
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@ -198,7 +189,7 @@ void BanMan::SweepBanned()
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m_banned.erase(it++);
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m_is_dirty = true;
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notify_ui = true;
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LogPrint(BCLog::NET, "%s: Removed banned node ip/subnet from banlist.dat: %s\n", __func__, sub_net.ToString());
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LogPrint(BCLog::NET, "Removed banned node address/subnet: %s\n", sub_net.ToString());
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} else
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++it;
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}
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@ -17,7 +17,8 @@
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// NOTE: When adjusting this, update rpcnet:setban's help ("24h")
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static constexpr unsigned int DEFAULT_MISBEHAVING_BANTIME = 60 * 60 * 24; // Default 24-hour ban
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// How often to dump addresses to banlist.dat
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/// How often to dump banned addresses/subnets to disk.
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static constexpr std::chrono::minutes DUMP_BANS_INTERVAL{15};
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class CClientUIInterface;
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@ -30,7 +31,7 @@ class CSubNet;
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// If an address or subnet is banned, we never accept incoming connections from
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// it and never create outgoing connections to it. We won't gossip its address
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// to other peers in addr messages. Banned addresses and subnets are stored to
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// banlist.dat on shutdown and reloaded on startup. Banning can be used to
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// disk on shutdown and reloaded on startup. Banning can be used to
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// prevent connections with spy nodes or other griefers.
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//
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// 2. Discouragement. If a peer misbehaves enough (see Misbehaving() in
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@ -80,7 +81,6 @@ public:
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void DumpBanlist();
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private:
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void SetBanned(const banmap_t& banmap);
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bool BannedSetIsDirty();
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//!set the "dirty" flag for the banlist
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void SetBannedSetDirty(bool dirty = true);
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@ -1662,7 +1662,7 @@ bool AppInitMain(const CoreContext& context, NodeContext& node, interfaces::Bloc
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assert(!node.addrman);
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node.addrman = std::make_unique<CAddrMan>();
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assert(!node.banman);
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node.banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat", &uiInterface, args.GetArg("-bantime", DEFAULT_MISBEHAVING_BANTIME));
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node.banman = std::make_unique<BanMan>(GetDataDir() / "banlist", &uiInterface, args.GetArg("-bantime", DEFAULT_MISBEHAVING_BANTIME));
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assert(!node.connman);
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node.connman = std::make_unique<CConnman>(GetRand(std::numeric_limits<uint64_t>::max()), GetRand(std::numeric_limits<uint64_t>::max()), *node.addrman);
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@ -226,7 +226,7 @@ BOOST_AUTO_TEST_CASE(stale_tip_peer_management)
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BOOST_AUTO_TEST_CASE(DoS_banning)
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{
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const CChainParams& chainparams = Params();
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto connman = std::make_unique<CConnman>(0x1337, 0x1337, *m_node.addrman);
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auto peerLogic = PeerManager::make(chainparams, *connman, *m_node.addrman, banman.get(), *m_node.scheduler,
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*m_node.chainman, *m_node.mempool, *governance, m_node.cj_ctx,
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@ -274,7 +274,7 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
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BOOST_AUTO_TEST_CASE(DoS_banscore)
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{
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const CChainParams& chainparams = Params();
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto connman = std::make_unique<CConnman>(0x1337, 0x1337, *m_node.addrman);
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auto peerLogic = PeerManager::make(chainparams, *connman, *m_node.addrman, banman.get(), *m_node.scheduler,
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*m_node.chainman, *m_node.mempool, *governance, m_node.cj_ctx,
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@ -320,7 +320,7 @@ BOOST_AUTO_TEST_CASE(DoS_banscore)
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BOOST_AUTO_TEST_CASE(DoS_bantime)
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{
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const CChainParams& chainparams = Params();
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto banman = std::make_unique<BanMan>(GetDataDir() / "banlist", nullptr, DEFAULT_MISBEHAVING_BANTIME);
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auto connman = std::make_unique<CConnman>(0x1337, 0x1337, *m_node.addrman);
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auto peerLogic = PeerManager::make(chainparams, *connman, *m_node.addrman, banman.get(), *m_node.scheduler,
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*m_node.chainman, *m_node.mempool, *governance, m_node.cj_ctx,
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@ -8,8 +8,10 @@
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <util/readwritefile.h>
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#include <util/system.h>
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#include <cassert>
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#include <cstdint>
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#include <limits>
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#include <string>
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@ -37,8 +39,20 @@ FUZZ_TARGET_INIT(banman, initialize_banman)
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int limit_max_ops{300};
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FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
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SetMockTime(ConsumeTime(fuzzed_data_provider));
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const fs::path banlist_file = GetDataDir() / "fuzzed_banlist.dat";
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fs::remove(banlist_file);
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fs::path banlist_file = GetDataDir() / "fuzzed_banlist";
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const bool start_with_corrupted_banlist{fuzzed_data_provider.ConsumeBool()};
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if (start_with_corrupted_banlist) {
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const std::string sfx{fuzzed_data_provider.ConsumeBool() ? ".dat" : ".json"};
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assert(WriteBinaryFile(banlist_file.string() + sfx,
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fuzzed_data_provider.ConsumeRandomLengthString()));
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} else {
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const bool force_read_and_write_to_err{fuzzed_data_provider.ConsumeBool()};
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if (force_read_and_write_to_err) {
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banlist_file = fs::path{"path"} / "to" / "inaccessible" / "fuzzed_banlist";
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}
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}
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{
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BanMan ban_man{banlist_file, nullptr, ConsumeBanTimeOffset(fuzzed_data_provider)};
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while (--limit_max_ops >= 0 && fuzzed_data_provider.ConsumeBool()) {
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@ -79,5 +93,6 @@ FUZZ_TARGET_INIT(banman, initialize_banman)
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});
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}
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}
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fs::remove(banlist_file);
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fs::remove(banlist_file.string() + ".dat");
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fs::remove(banlist_file.string() + ".json");
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}
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||||
|
@ -261,7 +261,7 @@ TestingSetup::TestingSetup(const std::string& chainName, const std::vector<const
|
||||
throw std::runtime_error("LoadGenesisBlock failed.");
|
||||
}
|
||||
|
||||
m_node.banman = std::make_unique<BanMan>(GetDataDir() / "banlist.dat", nullptr, DEFAULT_MISBEHAVING_BANTIME);
|
||||
m_node.banman = std::make_unique<BanMan>(GetDataDir() / "banlist", nullptr, DEFAULT_MISBEHAVING_BANTIME);
|
||||
m_node.peerman = PeerManager::make(chainparams, *m_node.connman, *m_node.addrman, m_node.banman.get(),
|
||||
*m_node.scheduler, *m_node.chainman, *m_node.mempool, *governance,
|
||||
m_node.cj_ctx, m_node.llmq_ctx, false);
|
||||
|
@ -22,7 +22,7 @@ class SetBanTests(BitcoinTestFramework):
|
||||
# Node 0 connects to Node 1, check that the noban permission is not granted
|
||||
self.connect_nodes(0, 1)
|
||||
peerinfo = self.nodes[1].getpeerinfo()[0]
|
||||
assert not 'noban' in peerinfo['permissions']
|
||||
assert not "noban" in peerinfo["permissions"]
|
||||
|
||||
# Node 0 get banned by Node 1
|
||||
self.nodes[1].setban("127.0.0.1", "add")
|
||||
@ -36,27 +36,40 @@ class SetBanTests(BitcoinTestFramework):
|
||||
self.restart_node(1, ['-whitelist=127.0.0.1'])
|
||||
self.connect_nodes(0, 1)
|
||||
peerinfo = self.nodes[1].getpeerinfo()[0]
|
||||
assert 'noban' in peerinfo['permissions']
|
||||
assert "noban" in peerinfo["permissions"]
|
||||
|
||||
# If we remove the ban, Node 0 should be able to reconnect even without noban permission
|
||||
self.nodes[1].setban("127.0.0.1", "remove")
|
||||
self.restart_node(1, [])
|
||||
self.connect_nodes(0, 1)
|
||||
peerinfo = self.nodes[1].getpeerinfo()[0]
|
||||
assert not 'noban' in peerinfo['permissions']
|
||||
assert not "noban" in peerinfo["permissions"]
|
||||
|
||||
self.log.info("Test that a non-IP address can be banned/unbanned")
|
||||
node = self.nodes[1]
|
||||
tor_addr = "pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion"
|
||||
ip_addr = "1.2.3.4"
|
||||
assert(not self.is_banned(node, tor_addr))
|
||||
assert(not self.is_banned(node, ip_addr))
|
||||
assert not self.is_banned(node, tor_addr)
|
||||
assert not self.is_banned(node, ip_addr)
|
||||
|
||||
node.setban(tor_addr, "add")
|
||||
assert(self.is_banned(node, tor_addr))
|
||||
assert(not self.is_banned(node, ip_addr))
|
||||
assert self.is_banned(node, tor_addr)
|
||||
assert not self.is_banned(node, ip_addr)
|
||||
|
||||
self.log.info("Test the ban list is preserved through restart")
|
||||
|
||||
self.restart_node(1)
|
||||
assert self.is_banned(node, tor_addr)
|
||||
assert not self.is_banned(node, ip_addr)
|
||||
|
||||
node.setban(tor_addr, "remove")
|
||||
assert(not self.is_banned(self.nodes[1], tor_addr))
|
||||
assert(not self.is_banned(node, ip_addr))
|
||||
assert not self.is_banned(self.nodes[1], tor_addr)
|
||||
assert not self.is_banned(node, ip_addr)
|
||||
|
||||
self.restart_node(1)
|
||||
assert not self.is_banned(node, tor_addr)
|
||||
assert not self.is_banned(node, ip_addr)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
SetBanTests().main()
|
||||
|
Loading…
Reference in New Issue
Block a user