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add Binds, WhiteBinds to CConnman::Options

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Part of a series of changes to clean up the instantiation of connman
by decoupling the command line arguments.

We also now abort with an error when explicit binds are set with
-listen=0.
This commit is contained in:
Marko Bencun 2017-06-01 12:34:02 +02:00
parent ce79f32518
commit 07b2afef10
3 changed files with 90 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

89
src/init.cpp
View File

@ -88,14 +88,6 @@ static CZMQNotificationInterface* pzmqNotificationInterface = NULL;
#define MIN_CORE_FILEDESCRIPTORS 150
#endif
/** Used to pass flags to the Bind() function */
enum BindFlags {
BF_NONE = 0,
BF_EXPLICIT = (1U << 0),
BF_REPORT_ERROR = (1U << 1),
BF_WHITELIST = (1U << 2),
};
static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
//////////////////////////////////////////////////////////////////////////////
@ -296,17 +288,6 @@ static void registerSignalHandler(int signal, void(*handler)(int))
}
#endif
bool static Bind(CConnman& connman, const CService &addr, unsigned int flags) {
if (!(flags & BF_EXPLICIT) && IsLimited(addr))
return false;
std::string strError;
if (!connman.BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
if (flags & BF_REPORT_ERROR)
return InitError(strError);
return false;
}
return true;
}
void OnRPCStarted()
{
uiInterface.NotifyBlockTip.connect(&RPCNotifyBlockChange);
@ -900,10 +881,16 @@ bool AppInitParameterInteraction()
return InitError(_("Prune mode is incompatible with -txindex."));
}
// -bind and -whitebind can't be set when not listening
size_t nUserBind =
(gArgs.IsArgSet("-bind") ? gArgs.GetArgs("-bind").size() : 0) +
(gArgs.IsArgSet("-whitebind") ? gArgs.GetArgs("-whitebind").size() : 0);
if (nUserBind != 0 && !gArgs.GetBoolArg("-listen", DEFAULT_LISTEN)) {
return InitError("Cannot set -bind or -whitebind together with -listen=0");
}
// Make sure enough file descriptors are available
int nBind = std::max(
(gArgs.IsArgSet("-bind") ? gArgs.GetArgs("-bind").size() : 0) +
(gArgs.IsArgSet("-whitebind") ? gArgs.GetArgs("-whitebind").size() : 0), size_t(1));
int nBind = std::max(nUserBind, size_t(1));
nUserMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
nMaxConnections = std::max(nUserMaxConnections, 0);
@ -1339,36 +1326,6 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
fDiscover = GetBoolArg("-discover", true);
fRelayTxes = !GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY);
if (fListen) {
bool fBound = false;
if (gArgs.IsArgSet("-bind")) {
for (const std::string& strBind : gArgs.GetArgs("-bind")) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
return InitError(ResolveErrMsg("bind", strBind));
fBound |= Bind(connman, addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
}
}
if (gArgs.IsArgSet("-whitebind")) {
for (const std::string& strBind : gArgs.GetArgs("-whitebind")) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, 0, false))
return InitError(ResolveErrMsg("whitebind", strBind));
if (addrBind.GetPort() == 0)
return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
fBound |= Bind(connman, addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
}
}
if (!gArgs.IsArgSet("-bind") && !gArgs.IsArgSet("-whitebind")) {
struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY;
fBound |= Bind(connman, CService(in6addr_any, GetListenPort()), BF_NONE);
fBound |= Bind(connman, CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
}
if (!fBound)
return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
}
if (gArgs.IsArgSet("-externalip")) {
for (const std::string& strAddr : gArgs.GetArgs("-externalip")) {
CService addrLocal;
@ -1635,7 +1592,6 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
// Map ports with UPnP
MapPort(GetBoolArg("-upnp", DEFAULT_UPNP));
std::string strNodeError;
CConnman::Options connOptions;
connOptions.nLocalServices = nLocalServices;
connOptions.nRelevantServices = nRelevantServices;
@ -1651,6 +1607,28 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
connOptions.nMaxOutboundTimeframe = nMaxOutboundTimeframe;
connOptions.nMaxOutboundLimit = nMaxOutboundLimit;
if (gArgs.IsArgSet("-bind")) {
for (const std::string& strBind : gArgs.GetArgs("-bind")) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false)) {
return InitError(ResolveErrMsg("bind", strBind));
}
connOptions.vBinds.push_back(addrBind);
}
}
if (gArgs.IsArgSet("-whitebind")) {
for (const std::string& strBind : gArgs.GetArgs("-whitebind")) {
CService addrBind;
if (!Lookup(strBind.c_str(), addrBind, 0, false)) {
return InitError(ResolveErrMsg("whitebind", strBind));
}
if (addrBind.GetPort() == 0) {
return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
}
connOptions.vWhiteBinds.push_back(addrBind);
}
}
if (gArgs.IsArgSet("-whitelist")) {
for (const auto& net : gArgs.GetArgs("-whitelist")) {
CSubNet subnet;
@ -1665,8 +1643,9 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
connOptions.vSeedNodes = gArgs.GetArgs("-seednode");
}
if (!connman.Start(scheduler, strNodeError, connOptions))
return InitError(strNodeError);
if (!connman.Start(scheduler, connOptions)) {
return false;
}
// ********************************************************* Step 12: finished

53
src/net.cpp
View File

@ -64,6 +64,14 @@
#endif
#endif
/** Used to pass flags to the Bind() function */
enum BindFlags {
BF_NONE = 0,
BF_EXPLICIT = (1U << 0),
BF_REPORT_ERROR = (1U << 1),
BF_WHITELIST = (1U << 2),
};
const static std::string NET_MESSAGE_COMMAND_OTHER = "*other*";
static const uint64_t RANDOMIZER_ID_NETGROUP = 0x6c0edd8036ef4036ULL; // SHA256("netgroup")[0:8]
@ -2219,7 +2227,38 @@ NodeId CConnman::GetNewNodeId()
return nLastNodeId.fetch_add(1, std::memory_order_relaxed);
}
bool CConnman::Start(CScheduler& scheduler, std::string& strNodeError, Options connOptions)
bool CConnman::Bind(const CService &addr, unsigned int flags) {
if (!(flags & BF_EXPLICIT) && IsLimited(addr))
return false;
std::string strError;
if (!BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
if ((flags & BF_REPORT_ERROR) && clientInterface) {
clientInterface->ThreadSafeMessageBox(strError, "", CClientUIInterface::MSG_ERROR);
}
return false;
}
return true;
}
bool CConnman::InitBinds(const std::vector<CService>& binds, const std::vector<CService>& whiteBinds) {
bool fBound = false;
for (const auto& addrBind : binds) {
fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
}
for (const auto& addrBind : whiteBinds) {
fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
}
if (binds.empty() && whiteBinds.empty()) {
struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY;
fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
}
return fBound;
}
bool CConnman::Start(CScheduler& scheduler, Options connOptions)
{
nTotalBytesRecv = 0;
nTotalBytesSent = 0;
@ -2241,13 +2280,23 @@ bool CConnman::Start(CScheduler& scheduler, std::string& strNodeError, Options c
SetBestHeight(connOptions.nBestHeight);
clientInterface = connOptions.uiInterface;
if (fListen && !InitBinds(connOptions.vBinds, connOptions.vWhiteBinds)) {
if (clientInterface) {
clientInterface->ThreadSafeMessageBox(
_("Failed to listen on any port. Use -listen=0 if you want this."),
"", CClientUIInterface::MSG_ERROR);
}
return false;
}
vWhitelistedRange = connOptions.vWhitelistedRange;
for (const auto& strDest : connOptions.vSeedNodes) {
AddOneShot(strDest);
}
clientInterface = connOptions.uiInterface;
if (clientInterface) {
clientInterface->InitMessage(_("Loading P2P addresses..."));
}

7
src/net.h
View File

@ -145,13 +145,13 @@ public:
uint64_t nMaxOutboundLimit = 0;
std::vector<std::string> vSeedNodes;
std::vector<CSubNet> vWhitelistedRange;
std::vector<CService> vBinds, vWhiteBinds;
};
CConnman(uint64_t seed0, uint64_t seed1);
~CConnman();
bool Start(CScheduler& scheduler, std::string& strNodeError, Options options);
bool Start(CScheduler& scheduler, Options options);
void Stop();
void Interrupt();
bool BindListenPort(const CService &bindAddr, std::string& strError, bool fWhitelisted = false);
bool GetNetworkActive() const { return fNetworkActive; };
void SetNetworkActive(bool active);
bool OpenNetworkConnection(const CAddress& addrConnect, bool fCountFailure, CSemaphoreGrant *grantOutbound = NULL, const char *strDest = NULL, bool fOneShot = false, bool fFeeler = false, bool fAddnode = false);
@ -288,6 +288,9 @@ private:
ListenSocket(SOCKET socket_, bool whitelisted_) : socket(socket_), whitelisted(whitelisted_) {}
};
bool BindListenPort(const CService &bindAddr, std::string& strError, bool fWhitelisted = false);
bool Bind(const CService &addr, unsigned int flags);
bool InitBinds(const std::vector<CService>& binds, const std::vector<CService>& whiteBinds);
void ThreadOpenAddedConnections();
void AddOneShot(const std::string& strDest);
void ProcessOneShot();