#include "configreader.h"
#include "users.h"
#include "channels.h"
#include "modules.h"
#include "commands/cmd_whois.h"
#include "commands/cmd_stats.h"
#include "socket.h"
#include "inspircd.h"
#include "wildcard.h"
#include "xline.h"
#include "transport.h"
#include "socketengine.h"
#include "m_spanningtree/main.h"
#include "m_spanningtree/utils.h"
#include "m_spanningtree/treeserver.h"
#include "m_spanningtree/link.h"
#include "m_spanningtree/treesocket.h"
#include "m_spanningtree/resolvers.h"
#include "m_spanningtree/handshaketimer.h"
/** Because most of the I/O gubbins are encapsulated within
* InspSocket, we just call the superclass constructor for
* most of the action, and append a few of our own values
* to it.
*/
TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, Module* HookMod)
: InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod)
{
myhost = host;
this->LinkState = LISTENER;
if (listening && Hook)
InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
}
TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, std::string ServerName, Module* HookMod)
: InspSocket(SI, host, port, listening, maxtime), Utils(Util), Hook(HookMod)
{
myhost = ServerName;
this->LinkState = CONNECTING;
if (Hook)
InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
}
/** When a listening socket gives us a new file descriptor,
* we must associate it with a socket without creating a new
* connection. This constructor is used for this purpose.
*/
TreeSocket::TreeSocket(SpanningTreeUtilities* Util, InspIRCd* SI, int newfd, char* ip, Module* HookMod)
: InspSocket(SI, newfd, ip), Utils(Util), Hook(HookMod)
{
this->LinkState = WAIT_AUTH_1;
/* If we have a transport module hooked to the parent, hook the same module to this
* socket, and set a timer waiting for handshake before we send CAPAB etc.
*/
if (Hook)
{
InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(Utils->LinkBlocks[0]), this->Utils));
}
else
{
/* Otherwise, theres no lower layer transport in plain TCP/IP,
* so just send the capabilities right now.
*/
this->SendCapabilities();
}
}
ServerState TreeSocket::GetLinkState()
{
return this->LinkState;
}
Module* TreeSocket::GetHook()
{
return this->Hook;
}
TreeSocket::~TreeSocket()
{
if (Hook)
InspSocketUnhookRequest(this, (Module*)Utils->Creator, Hook).Send();
}
/** When an outbound connection finishes connecting, we receive
* this event, and must send our SERVER string to the other
* side. If the other side is happy, as outlined in the server
* to server docs on the inspircd.org site, the other side
* will then send back its own server string.
*/
bool TreeSocket::OnConnected()
{
if (this->LinkState == CONNECTING)
{
/* we do not need to change state here. */
for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
{
if (x->Name == this->myhost)
{
this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] started.");
if (Hook)
{
InspSocketHookRequest(this, (Module*)Utils->Creator, Hook).Send();
this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+x->Hook+"\2");
}
else
this->SendCapabilities();
/* found who we're supposed to be connecting to, send the neccessary gubbins. */
if (Hook)
Instance->Timers->AddTimer(new HandshakeTimer(Instance, this, &(*x), this->Utils));
else
this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
return true;
}
}
}
/* There is a (remote) chance that between the /CONNECT and the connection
* being accepted, some muppet has removed the block and rehashed.
* If that happens the connection hangs here until it's closed. Unlikely
* and rather harmless.
*/
this->Instance->SNO->WriteToSnoMask('l',"Connection to \2"+myhost+"\2 lost link tag(!)");
return true;
}
void TreeSocket::OnError(InspSocketError e)
{
/* We don't handle this method, because all our
* dirty work is done in OnClose() (see below)
* which is still called on error conditions too.
*/
if (e == I_ERR_CONNECT)
{
this->Instance->SNO->WriteToSnoMask('l',"Connection failed: Connection to \002"+myhost+"\002 refused");
Link* MyLink = Utils->FindLink(myhost);
if (MyLink)
Utils->DoFailOver(MyLink);
}
}
int TreeSocket::OnDisconnect()
{
/* For the same reason as above, we don't
* handle OnDisconnect()
*/
return true;
}
/** Recursively send the server tree with distances as hops.
* This is used during network burst to inform the other server
* (and any of ITS servers too) of what servers we know about.
* If at any point any of these servers already exist on the other
* end, our connection may be terminated. The hopcounts given
* by this function are relative, this doesn't matter so long as
* they are all >1, as all the remote servers re-calculate them
* to be relative too, with themselves as hop 0.
*/
void TreeSocket::SendServers(TreeServer* Current, TreeServer* s, int hops)
{
char command[1024];
for (unsigned int q = 0; q < Current->ChildCount(); q++)
{
TreeServer* recursive_server = Current->GetChild(q);
if (recursive_server != s)
{
snprintf(command,1024,":%s SERVER %s * %d :%s",Current->GetName().c_str(),recursive_server->GetName().c_str(),hops,recursive_server->GetDesc().c_str());
this->WriteLine(command);
this->WriteLine(":"+recursive_server->GetName()+" VERSION :"+recursive_server->GetVersion());
/* down to next level */
this->SendServers(recursive_server, s, hops+1);
}
}
}
std::string TreeSocket::MyCapabilities()
{
std::vector modlist;
std::string capabilities = "";
for (int i = 0; i <= this->Instance->GetModuleCount(); i++)
{
if (this->Instance->modules[i]->GetVersion().Flags & VF_COMMON)
modlist.push_back(this->Instance->Config->module_names[i]);
}
sort(modlist.begin(),modlist.end());
for (unsigned int i = 0; i < modlist.size(); i++)
{
if (i)
capabilities = capabilities + ",";
capabilities = capabilities + modlist[i];
}
return capabilities;
}
void TreeSocket::SendCapabilities()
{
irc::commasepstream modulelist(MyCapabilities());
this->WriteLine("CAPAB START");
/* Send module names, split at 509 length */
std::string item = "*";
std::string line = "CAPAB MODULES ";
while ((item = modulelist.GetToken()) != "")
{
if (line.length() + item.length() + 1 > 509)
{
this->WriteLine(line);
line = "CAPAB MODULES ";
}
if (line != "CAPAB MODULES ")
line.append(",");
line.append(item);
}
if (line != "CAPAB MODULES ")
this->WriteLine(line);
int ip6 = 0;
int ip6support = 0;
#ifdef IPV6
ip6 = 1;
#endif
#ifdef SUPPORT_IP6LINKS
ip6support = 1;
#endif
this->WriteLine("CAPAB CAPABILITIES :NICKMAX="+ConvToStr(NICKMAX)+" HALFOP="+ConvToStr(this->Instance->Config->AllowHalfop)+" CHANMAX="+ConvToStr(CHANMAX)+" MAXMODES="+ConvToStr(MAXMODES)+" IDENTMAX="+ConvToStr(IDENTMAX)+" MAXQUIT="+ConvToStr(MAXQUIT)+" MAXTOPIC="+ConvToStr(MAXTOPIC)+" MAXKICK="+ConvToStr(MAXKICK)+" MAXGECOS="+ConvToStr(MAXGECOS)+" MAXAWAY="+ConvToStr(MAXAWAY)+" IP6NATIVE="+ConvToStr(ip6)+" IP6SUPPORT="+ConvToStr(ip6support)+" PROTOCOL="+ConvToStr(ProtocolVersion));
this->WriteLine("CAPAB END");
}
/* Check a comma seperated list for an item */
bool TreeSocket::HasItem(const std::string &list, const std::string &item)
{
irc::commasepstream seplist(list);
std::string item2 = "*";
while ((item2 = seplist.GetToken()) != "")
{
if (item2 == item)
return true;
}
return false;
}
/* Isolate and return the elements that are different between two comma seperated lists */
std::string TreeSocket::ListDifference(const std::string &one, const std::string &two)
{
irc::commasepstream list_one(one);
std::string item = "*";
std::string result = "";
while ((item = list_one.GetToken()) != "")
{
if (!HasItem(two, item))
{
result.append(" ");
result.append(item);
}
}
return result;
}
bool TreeSocket::Capab(const std::deque ¶ms)
{
if (params.size() < 1)
{
this->WriteLine("ERROR :Invalid number of parameters for CAPAB - Mismatched version");
return false;
}
if (params[0] == "START")
{
this->ModuleList = "";
this->CapKeys.clear();
}
else if (params[0] == "END")
{
std::string reason = "";
int ip6support = 0;
#ifdef SUPPORT_IP6LINKS
ip6support = 1;
#endif
/* Compare ModuleList and check CapKeys...
* Maybe this could be tidier? -- Brain
*/
if ((this->ModuleList != this->MyCapabilities()) && (this->ModuleList.length()))
{
std::string diff = ListDifference(this->ModuleList, this->MyCapabilities());
if (!diff.length())
{
diff = "your server:" + ListDifference(this->MyCapabilities(), this->ModuleList);
}
else
{
diff = "this server:" + diff;
}
if (diff.length() == 12)
reason = "Module list in CAPAB is not alphabetically ordered, cannot compare lists.";
else
reason = "Modules loaded on these servers are not correctly matched, these modules are not loaded on " + diff;
}
if (((this->CapKeys.find("IP6SUPPORT") == this->CapKeys.end()) && (ip6support)) || ((this->CapKeys.find("IP6SUPPORT") != this->CapKeys.end()) && (this->CapKeys.find("IP6SUPPORT")->second != ConvToStr(ip6support))))
reason = "We don't both support linking to IPV6 servers";
if (((this->CapKeys.find("IP6NATIVE") != this->CapKeys.end()) && (this->CapKeys.find("IP6NATIVE")->second == "1")) && (!ip6support))
reason = "The remote server is IPV6 native, and we don't support linking to IPV6 servers";
if (((this->CapKeys.find("NICKMAX") == this->CapKeys.end()) || ((this->CapKeys.find("NICKMAX") != this->CapKeys.end()) && (this->CapKeys.find("NICKMAX")->second != ConvToStr(NICKMAX)))))
reason = "Maximum nickname lengths differ or remote nickname length not specified";
if (((this->CapKeys.find("PROTOCOL") == this->CapKeys.end()) || ((this->CapKeys.find("PROTOCOL") != this->CapKeys.end()) && (this->CapKeys.find("PROTOCOL")->second != ConvToStr(ProtocolVersion)))))
{
if (this->CapKeys.find("PROTOCOL") != this->CapKeys.end())
{
reason = "Mismatched protocol versions "+this->CapKeys.find("PROTOCOL")->second+" and "+ConvToStr(ProtocolVersion);
}
else
{
reason = "Protocol version not specified";
}
}
if (((this->CapKeys.find("HALFOP") == this->CapKeys.end()) && (Instance->Config->AllowHalfop)) || ((this->CapKeys.find("HALFOP") != this->CapKeys.end()) && (this->CapKeys.find("HALFOP")->second != ConvToStr(Instance->Config->AllowHalfop))))
reason = "We don't both have halfop support enabled/disabled identically";
if (((this->CapKeys.find("IDENTMAX") == this->CapKeys.end()) || ((this->CapKeys.find("IDENTMAX") != this->CapKeys.end()) && (this->CapKeys.find("IDENTMAX")->second != ConvToStr(IDENTMAX)))))
reason = "Maximum ident lengths differ or remote ident length not specified";
if (((this->CapKeys.find("CHANMAX") == this->CapKeys.end()) || ((this->CapKeys.find("CHANMAX") != this->CapKeys.end()) && (this->CapKeys.find("CHANMAX")->second != ConvToStr(CHANMAX)))))
reason = "Maximum channel lengths differ or remote channel length not specified";
if (((this->CapKeys.find("MAXMODES") == this->CapKeys.end()) || ((this->CapKeys.find("MAXMODES") != this->CapKeys.end()) && (this->CapKeys.find("MAXMODES")->second != ConvToStr(MAXMODES)))))
reason = "Maximum modes per line differ or remote modes per line not specified";
if (((this->CapKeys.find("MAXQUIT") == this->CapKeys.end()) || ((this->CapKeys.find("MAXQUIT") != this->CapKeys.end()) && (this->CapKeys.find("MAXQUIT")->second != ConvToStr(MAXQUIT)))))
reason = "Maximum quit lengths differ or remote quit length not specified";
if (((this->CapKeys.find("MAXTOPIC") == this->CapKeys.end()) || ((this->CapKeys.find("MAXTOPIC") != this->CapKeys.end()) && (this->CapKeys.find("MAXTOPIC")->second != ConvToStr(MAXTOPIC)))))
reason = "Maximum topic lengths differ or remote topic length not specified";
if (((this->CapKeys.find("MAXKICK") == this->CapKeys.end()) || ((this->CapKeys.find("MAXKICK") != this->CapKeys.end()) && (this->CapKeys.find("MAXKICK")->second != ConvToStr(MAXKICK)))))
reason = "Maximum kick lengths differ or remote kick length not specified";
if (((this->CapKeys.find("MAXGECOS") == this->CapKeys.end()) || ((this->CapKeys.find("MAXGECOS") != this->CapKeys.end()) && (this->CapKeys.find("MAXGECOS")->second != ConvToStr(MAXGECOS)))))
reason = "Maximum GECOS (fullname) lengths differ or remote GECOS length not specified";
if (((this->CapKeys.find("MAXAWAY") == this->CapKeys.end()) || ((this->CapKeys.find("MAXAWAY") != this->CapKeys.end()) && (this->CapKeys.find("MAXAWAY")->second != ConvToStr(MAXAWAY)))))
reason = "Maximum awaymessage lengths differ or remote awaymessage length not specified";
if (reason.length())
{
this->WriteLine("ERROR :CAPAB negotiation failed: "+reason);
return false;
}
}
else if ((params[0] == "MODULES") && (params.size() == 2))
{
if (!this->ModuleList.length())
{
this->ModuleList.append(params[1]);
}
else
{
this->ModuleList.append(",");
this->ModuleList.append(params[1]);
}
}
else if ((params[0] == "CAPABILITIES") && (params.size() == 2))
{
irc::tokenstream capabs(params[1]);
std::string item = "*";
while ((item = capabs.GetToken()) != "")
{
/* Process each key/value pair */
std::string::size_type equals = item.rfind('=');
if (equals != std::string::npos)
{
std::string var = item.substr(0, equals);
std::string value = item.substr(equals+1, item.length());
CapKeys[var] = value;
}
}
}
return true;
}
/** This function forces this server to quit, removing this server
* and any users on it (and servers and users below that, etc etc).
* It's very slow and pretty clunky, but luckily unless your network
* is having a REAL bad hair day, this function shouldnt be called
* too many times a month ;-)
*/
void TreeSocket::SquitServer(std::string &from, TreeServer* Current)
{
/* recursively squit the servers attached to 'Current'.
* We're going backwards so we don't remove users
* while we still need them ;)
*/
for (unsigned int q = 0; q < Current->ChildCount(); q++)
{
TreeServer* recursive_server = Current->GetChild(q);
this->SquitServer(from,recursive_server);
}
/* Now we've whacked the kids, whack self */
num_lost_servers++;
num_lost_users += Current->QuitUsers(from);
}
/** This is a wrapper function for SquitServer above, which
* does some validation first and passes on the SQUIT to all
* other remaining servers.
*/
void TreeSocket::Squit(TreeServer* Current, const std::string &reason)
{
if ((Current) && (Current != Utils->TreeRoot))
{
Event rmode((char*)Current->GetName().c_str(), (Module*)Utils->Creator, "lost_server");
rmode.Send(Instance);
std::deque params;
params.push_back(Current->GetName());
params.push_back(":"+reason);
Utils->DoOneToAllButSender(Current->GetParent()->GetName(),"SQUIT",params,Current->GetName());
if (Current->GetParent() == Utils->TreeRoot)
{
this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split: "+reason);
}
else
{
this->Instance->WriteOpers("Server \002"+Current->GetName()+"\002 split from server \002"+Current->GetParent()->GetName()+"\002 with reason: "+reason);
}
num_lost_servers = 0;
num_lost_users = 0;
std::string from = Current->GetParent()->GetName()+" "+Current->GetName();
SquitServer(from, Current);
Current->Tidy();
Current->GetParent()->DelChild(Current);
DELETE(Current);
this->Instance->WriteOpers("Netsplit complete, lost \002%d\002 users on \002%d\002 servers.", num_lost_users, num_lost_servers);
}
else
{
Instance->Log(DEFAULT,"Squit from unknown server");
}
}
/** FMODE command - server mode with timestamp checks */
bool TreeSocket::ForceMode(const std::string &source, std::deque ¶ms)
{
/* Chances are this is a 1.0 FMODE without TS */
if (params.size() < 3)
{
/* No modes were in the command, probably a channel with no modes set on it */
return true;
}
bool smode = false;
std::string sourceserv;
/* Are we dealing with an FMODE from a user, or from a server? */
userrec* who = this->Instance->FindNick(source);
if (who)
{
/* FMODE from a user, set sourceserv to the users server name */
sourceserv = who->server;
}
else
{
/* FMODE from a server, create a fake user to receive mode feedback */
who = new userrec(this->Instance);
who->SetFd(FD_MAGIC_NUMBER);
smode = true; /* Setting this flag tells us we should free the userrec later */
sourceserv = source; /* Set sourceserv to the actual source string */
}
const char* modelist[64];
time_t TS = 0;
int n = 0;
memset(&modelist,0,sizeof(modelist));
for (unsigned int q = 0; (q < params.size()) && (q < 64); q++)
{
if (q == 1)
{
/* The timestamp is in this position.
* We don't want to pass that up to the
* server->client protocol!
*/
TS = atoi(params[q].c_str());
}
else
{
/* Everything else is fine to append to the modelist */
modelist[n++] = params[q].c_str();
}
}
/* Extract the TS value of the object, either userrec or chanrec */
userrec* dst = this->Instance->FindNick(params[0]);
chanrec* chan = NULL;
time_t ourTS = 0;
if (dst)
{
ourTS = dst->age;
}
else
{
chan = this->Instance->FindChan(params[0]);
if (chan)
{
ourTS = chan->age;
}
else
/* Oops, channel doesnt exist! */
return true;
}
/* TS is equal: Merge the mode changes, use voooodoooooo on modes
* with parameters.
*/
if (TS == ourTS)
{
ModeHandler* mh = NULL;
unsigned long paramptr = 3;
std::string to_bounce = "";
std::string to_keep = "";
std::vector params_to_keep;
std::string params_to_bounce = "";
bool adding = true;
char cur_change = 1;
char old_change = 0;
char old_bounce_change = 0;
/* Merge modes, basically do special stuff to mode with params */
for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
{
switch (*x)
{
case '-':
adding = false;
break;
case '+':
adding = true;
break;
default:
if (adding)
{
/* We only care about whats being set,
* not whats being unset
*/
mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
if ((mh) && (mh->GetNumParams(adding) > 0) && (!mh->IsListMode()))
{
/* We only want to do special things to
* modes with parameters, we are going to rewrite
* those parameters
*/
ModePair ret;
adding ? cur_change = '+' : cur_change = '-';
ret = mh->ModeSet(smode ? NULL : who, dst, chan, params[paramptr]);
/* The mode is set here, check which we should keep */
if (ret.first)
{
bool which_to_keep = mh->CheckTimeStamp(TS, ourTS, params[paramptr], ret.second, chan);
if (which_to_keep == true)
{
/* Keep ours, bounce theirs:
* Send back ours to them and
* drop their mode changs
*/
adding ? cur_change = '+' : cur_change = '-';
if (cur_change != old_bounce_change)
to_bounce += cur_change;
to_bounce += *x;
old_bounce_change = cur_change;
if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
params_to_bounce.append(" ").append(ret.second);
}
else
{
/* Keep theirs: Accept their mode change,
* do nothing else
*/
adding ? cur_change = '+' : cur_change = '-';
if (cur_change != old_change)
to_keep += cur_change;
to_keep += *x;
old_change = cur_change;
if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
params_to_keep.push_back(params[paramptr]);
}
}
else
{
/* Mode isnt set here, we want it */
adding ? cur_change = '+' : cur_change = '-';
if (cur_change != old_change)
to_keep += cur_change;
to_keep += *x;
old_change = cur_change;
if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
params_to_keep.push_back(params[paramptr]);
}
paramptr++;
}
else
{
mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
if (mh)
{
adding ? cur_change = '+' : cur_change = '-';
/* Just keep this, safe to merge with no checks
* it has no parameters
*/
if (cur_change != old_change)
to_keep += cur_change;
to_keep += *x;
old_change = cur_change;
if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
{
params_to_keep.push_back(params[paramptr++]);
}
}
}
}
else
{
mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
if (mh)
{
/* Taking a mode away */
adding ? cur_change = '+' : cur_change = '-';
if (cur_change != old_change)
to_keep += cur_change;
to_keep += *x;
old_change = cur_change;
if ((mh->GetNumParams(adding) > 0) && (paramptr < params.size()))
params_to_keep.push_back(params[paramptr++]);
}
}
break;
}
}
if (to_bounce.length())
{
std::deque newparams;
newparams.push_back(params[0]);
newparams.push_back(ConvToStr(ourTS));
newparams.push_back(to_bounce+params_to_bounce);
Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
}
if (to_keep.length())
{
unsigned int n = 2;
unsigned int q = 0;
modelist[0] = params[0].c_str();
modelist[1] = to_keep.c_str();
if (params_to_keep.size() > 0)
{
for (q = 0; (q < params_to_keep.size()) && (q < 64); q++)
{
modelist[n++] = params_to_keep[q].c_str();
}
}
if (smode)
{
this->Instance->SendMode(modelist, n, who);
}
else
{
this->Instance->CallCommandHandler("MODE", modelist, n, who);
}
/* HOT POTATO! PASS IT ON! */
Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv);
}
}
else
/* U-lined servers always win regardless of their TS */
if ((TS > ourTS) && (!this->Instance->ULine(source.c_str())))
{
/* Bounce the mode back to its sender.* We use our lower TS, so the other end
* SHOULD accept it, if its clock is right.
*
* NOTE: We should check that we arent bouncing anything thats already set at this end.
* If we are, bounce +ourmode to 'reinforce' it. This prevents desyncs.
* e.g. They send +l 50, we have +l 10 set. rather than bounce -l 50, we bounce +l 10.
*
* Thanks to jilles for pointing out this one-hell-of-an-issue before i even finished
* writing the code. It took me a while to come up with this solution.
*
* XXX: BE SURE YOU UNDERSTAND THIS CODE FULLY BEFORE YOU MESS WITH IT.
*/
std::deque newparams; /* New parameter list we send back */
newparams.push_back(params[0]); /* Target, user or channel */
newparams.push_back(ConvToStr(ourTS)); /* Timestamp value of the target */
newparams.push_back(""); /* This contains the mode string. For now
* it's empty, we fill it below.
*/
/* Intelligent mode bouncing. Don't just invert, reinforce any modes which are already
* set to avoid a desync here.
*/
std::string modebounce = "";
bool adding = true;
unsigned int t = 3;
ModeHandler* mh = NULL;
char cur_change = 1;
char old_change = 0;
for (std::string::iterator x = params[2].begin(); x != params[2].end(); x++)
{
/* Iterate over all mode chars in the sent set */
switch (*x)
{
/* Adding or subtracting modes? */
case '-':
adding = false;
break;
case '+':
adding = true;
break;
default:
/* Find the mode handler for this mode */
mh = this->Instance->Modes->FindMode(*x, chan ? MODETYPE_CHANNEL : MODETYPE_USER);
/* Got a mode handler?
* This also prevents us bouncing modes we have no handler for.
*/
if (mh)
{
ModePair ret;
std::string p = "";
/* Does the mode require a parameter right now?
* If it does, fetch it if we can
*/
if ((mh->GetNumParams(adding) > 0) && (t < params.size()))
p = params[t++];
/* Call the ModeSet method to determine if its set with the
* given parameter here or not.
*/
ret = mh->ModeSet(smode ? NULL : who, dst, chan, p);
/* XXX: Really. Dont ask.
* Determine from if its set combined with what the current
* 'state' is (adding or not) as to wether we should 'invert'
* or 'reinforce' the mode change
*/
(!ret.first ? (adding ? cur_change = '-' : cur_change = '+') : (!adding ? cur_change = '-' : cur_change = '+'));
/* Quickly determine if we have 'flipped' from + to -,
* or - to +, to prevent unneccessary +/- chars in the
* output string that waste bandwidth
*/
if (cur_change != old_change)
modebounce += cur_change;
old_change = cur_change;
/* Add the mode character to the output string */
modebounce += mh->GetModeChar();
/* We got a parameter back from ModeHandler::ModeSet,
* are we supposed to be sending one out right now?
*/
if (ret.second.length())
{
if (mh->GetNumParams(cur_change == '+') > 0)
/* Yes we're supposed to be sending out
* the parameter. Make sure it goes
*/
newparams.push_back(ret.second);
}
}
break;
}
}
/* Update the parameters for FMODE with the new 'bounced' string */
newparams[2] = modebounce;
/* Only send it back the way it came, no need to send it anywhere else */
Utils->DoOneToOne(this->Instance->Config->ServerName,"FMODE",newparams,sourceserv);
}
else
{
/* The server was ulined, but something iffy is up with the TS.
* Sound the alarm bells!
*/
if ((this->Instance->ULine(sourceserv.c_str())) && (TS > ourTS))
{
this->Instance->WriteOpers("\2WARNING!\2 U-Lined server '%s' has bad TS for '%s' (accepted change): \2SYNC YOUR CLOCKS\2 to avoid this notice",sourceserv.c_str(),params[0].c_str());
}
/* Allow the mode, route it to either server or user command handling */
if (smode)
this->Instance->SendMode(modelist,n,who);
else
this->Instance->CallCommandHandler("MODE", modelist, n, who);
/* HOT POTATO! PASS IT ON! */
Utils->DoOneToAllButSender(source,"FMODE",params,sourceserv);
}
/* Are we supposed to free the userrec? */
if (smode)
DELETE(who);
return true;
}
/** FTOPIC command */
bool TreeSocket::ForceTopic(const std::string &source, std::deque ¶ms)
{
if (params.size() != 4)
return true;
time_t ts = atoi(params[1].c_str());
std::string nsource = source;
chanrec* c = this->Instance->FindChan(params[0]);
if (c)
{
if ((ts >= c->topicset) || (!*c->topic))
{
std::string oldtopic = c->topic;
strlcpy(c->topic,params[3].c_str(),MAXTOPIC);
strlcpy(c->setby,params[2].c_str(),NICKMAX-1);
c->topicset = ts;
/* if the topic text is the same as the current topic,
* dont bother to send the TOPIC command out, just silently
* update the set time and set nick.
*/
if (oldtopic != params[3])
{
userrec* user = this->Instance->FindNick(source);
if (!user)
{
c->WriteChannelWithServ(source.c_str(), "TOPIC %s :%s", c->name, c->topic);
}
else
{
c->WriteChannel(user, "TOPIC %s :%s", c->name, c->topic);
nsource = user->server;
}
/* all done, send it on its way */
params[3] = ":" + params[3];
Utils->DoOneToAllButSender(source,"FTOPIC",params,nsource);
}
}
}
return true;
}
/** FJOIN, similar to TS6 SJOIN, but not quite. */
bool TreeSocket::ForceJoin(const std::string &source, std::deque ¶ms)
{
/* 1.1 FJOIN works as follows:
*
* Each FJOIN is sent along with a timestamp, and the side with the lowest
* timestamp 'wins'. From this point on we will refer to this side as the
* winner. The side with the higher timestamp loses, from this point on we
* will call this side the loser or losing side. This should be familiar to
* anyone who's dealt with dreamforge or TS6 before.
*
* When two sides of a split heal and this occurs, the following things
* will happen:
*
* If the timestamps are exactly equal, both sides merge their privilages
* and users, as in InspIRCd 1.0 and ircd2.8. The channels have not been
* re-created during a split, this is safe to do.
*
*
* If the timestamps are NOT equal, the losing side removes all privilage
* modes from all of its users that currently exist in the channel, before
* introducing new users into the channel which are listed in the FJOIN
* command's parameters. This means, all modes +ohv, and privilages added
* by modules, such as +qa. The losing side then LOWERS its timestamp value
* of the channel to match that of the winning side, and the modes of the
* users of the winning side are merged in with the losing side. The loser
* then sends out a set of FMODE commands which 'confirm' that it just
* removed all privilage modes from its existing users, which allows for
* services packages to still work correctly without needing to know the
* timestamping rules which InspIRCd follows. In TS6 servers this is always
* a problem, and services packages must contain code which explicitly
* behaves as TS6 does, removing ops from the losing side of a split where
* neccessary within its internal records, as this state information is
* not explicitly echoed out in that protocol.
*
* The winning side on the other hand will ignore all user modes from the
* losing side, so only its own modes get applied. Life is simple for those
* who succeed at internets. :-)
*
* NOTE: Unlike TS6 and dreamforge and other protocols which have SJOIN,
* FJOIN does not contain the simple-modes such as +iklmnsp. Why not,
* you ask? Well, quite simply because we don't need to. They'll be sent
* after the FJOIN by FMODE, and FMODE is timestamped, so in the event
* the losing side sends any modes for the channel which shouldnt win,
* they wont as their timestamp will be too high :-)
*/
if (params.size() < 3)
return true;
char first[MAXBUF]; /* The first parameter of the mode command */
char modestring[MAXBUF]; /* The mode sequence (2nd parameter) of the mode command */
char* mode_users[127]; /* The values used by the mode command */
memset(&mode_users,0,sizeof(mode_users)); /* Initialize mode parameters */
mode_users[0] = first; /* Set this up to be our on-stack value */
mode_users[1] = modestring; /* Same here as above */
strcpy(modestring,"+"); /* Initialize the mode sequence to just '+' */
unsigned int modectr = 2; /* Pointer to the third mode parameter (e.g. the one after the +-sequence) */
userrec* who = NULL; /* User we are currently checking */
std::string channel = params[0]; /* Channel name, as a string */
time_t TS = atoi(params[1].c_str()); /* Timestamp given to us for remote side */
bool created = false;
/* Try and find the channel */
chanrec* chan = this->Instance->FindChan(channel);
/* Initialize channel name in the mode parameters */
strlcpy(mode_users[0],channel.c_str(),MAXBUF);
/* default TS is a high value, which if we dont have this
* channel will let the other side apply their modes.
*/
time_t ourTS = Instance->Time(true)+600;
/* Does this channel exist? if it does, get its REAL timestamp */
if (chan)
ourTS = chan->age;
else
created = true; /* don't perform deops, and set TS to correct time after processing. */
/* In 1.1, if they have the newer channel, we immediately clear
* all status modes from our users. We then accept their modes.
* If WE have the newer channel its the other side's job to do this.
* Note that this causes the losing server to send out confirming
* FMODE lines.
*/
if (ourTS > TS)
{
std::deque param_list;
/* Lower the TS here */
if (Utils->AnnounceTSChange && chan)
chan->WriteChannelWithServ(Instance->Config->ServerName,
"NOTICE %s :TS for %s changed from %lu to %lu", chan->name, chan->name, ourTS, TS);
ourTS = TS;
/* Zap all the privilage modes on our side, if the channel exists here */
if (!created)
{
param_list.push_back(channel);
/* Do this first! */
chan->age = TS;
this->RemoveStatus(Instance->Config->ServerName, param_list);
}
}
/* Put the final parameter of the FJOIN into a tokenstream ready to split it */
irc::tokenstream users(params[2]);
std::string item = "*";
/* do this first, so our mode reversals are correctly received by other servers
* if there is a TS collision.
*/
params[2] = ":" + params[2];
Utils->DoOneToAllButSender(source,"FJOIN",params,source);
/* Now, process every 'prefixes,nick' pair */
while (item != "")
{
/* Find next user */
item = users.GetToken();
const char* usr = item.c_str();
/* Safety check just to make sure someones not sent us an FJOIN full of spaces
* (is this even possible?) */
if (usr && *usr)
{
const char* permissions = usr;
int ntimes = 0;
char* nm = new char[MAXBUF];
char* tnm = nm;
/* Iterate through all the prefix values, convert them from prefixes
* to mode letters, and append them to the mode sequence
*/
while ((*permissions) && (*permissions != ',') && (ntimes < MAXBUF))
{
ModeHandler* mh = Instance->Modes->FindPrefix(*permissions);
if (mh)
{
/* This is a valid prefix */
ntimes++;
*tnm++ = mh->GetModeChar();
}
else
{
/* Not a valid prefix...
* danger bill bobbertson! (that's will robinsons older brother ;-) ...)
*/
this->Instance->WriteOpers("ERROR: We received a user with an unknown prefix '%c'. Closed connection to avoid a desync.",*permissions);
this->WriteLine(std::string("ERROR :Invalid prefix '")+(*permissions)+"' in FJOIN");
return false;
}
usr++;
permissions++;
}
/* Null terminate modes */
*tnm = 0;
/* Advance past the comma, to the nick */
usr++;
/* Check the user actually exists */
who = this->Instance->FindNick(usr);
if (who)
{
/* Did they get any modes? How many times? */
strlcat(modestring, nm, MAXBUF);
for (int k = 0; k < ntimes; k++)
mode_users[modectr++] = strdup(usr);
/* Free temporary buffer used for mode sequence */
delete[] nm;
/* Check that the user's 'direction' is correct
* based on the server sending the FJOIN. We must
* check each nickname in turn, because the origin of
* the FJOIN may be different to the origin of the nicks
* in the command itself.
*/
TreeServer* route_back_again = Utils->BestRouteTo(who->server);
if ((!route_back_again) || (route_back_again->GetSocket() != this))
{
/* Oh dear oh dear. */
continue;
}
/* Finally, we can actually place the user into the channel.
* We're sure its right. Final answer, phone a friend.
*/
chanrec::JoinUser(this->Instance, who, channel.c_str(), true, "");
/* Have we already queued up MAXMODES modes with parameters
* (+qaohv) ready to be sent to the server?
*/
if (modectr >= (MAXMODES-1))
{
/* Only actually give the users any status if we lost
* the FJOIN or drew (equal timestamps).
* It isn't actually possible for ourTS to be > TS here,
* only possible to actually have ourTS == TS, or
* ourTS < TS, because if we lost, we already lowered
* our TS above before we entered this loop. We only
* check >= as a safety measure, in case someone stuffed
* up. If someone DID stuff up, it was most likely me.
* Note: I do not like baseball bats in the face...
*/
if (ourTS >= TS)
{
this->Instance->SendMode((const char**)mode_users,modectr,who);
/* Something stuffed up, and for some reason, the timestamp is
* NOT lowered right now and should be. Lower it. Usually this
* code won't be executed, doubtless someone will remove it some
* day soon.
*/
if (ourTS > TS)
{
Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
chan->age = TS;
ourTS = TS;
}
}
/* Reset all this back to defaults, and
* free any ram we have left allocated.
*/
strcpy(mode_users[1],"+");
for (unsigned int f = 2; f < modectr; f++)
free(mode_users[f]);
modectr = 2;
}
}
else
{
/* Remember to free this */
delete[] nm;
/* If we got here, there's a nick in FJOIN which doesnt exist on this server.
* We don't try to process the nickname here (that WOULD cause a segfault because
* we'd be playing with null pointers) however, we DO pass the nickname on, just
* in case somehow we're desynched, so that other users which might be able to see
* the nickname get their fair chance to process it.
*/
Instance->Log(SPARSE,"Warning! Invalid user in FJOIN to channel %s IGNORED", channel.c_str());
continue;
}
}
}
/* there werent enough modes built up to flush it during FJOIN,
* or, there are a number left over. flush them out.
*/
if ((modectr > 2) && (who) && (chan))
{
if (ourTS >= TS)
{
/* Our channel is newer than theirs. Evil deeds must be afoot. */
this->Instance->SendMode((const char**)mode_users,modectr,who);
/* Yet again, we can't actually get a true value here, if everything else
* is working as it should.
*/
if (ourTS > TS)
{
Instance->Log(DEFAULT,"Channel TS for %s changed from %lu to %lu",chan->name,ourTS,TS);
chan->age = TS;
ourTS = TS;
}
}
/* Free anything we have left to free */
for (unsigned int f = 2; f < modectr; f++)
free(mode_users[f]);
}
/* if we newly created the channel, set it's TS properly. */
if (created)
{
/* find created channel .. */
chan = this->Instance->FindChan(channel);
if (chan)
/* w00t said this shouldnt be needed but it is.
* This isnt strictly true, as chan can be NULL
* if a nick collision has occured and therefore
* the channel was never created.
*/
chan->age = TS;
}
/* All done. That wasnt so bad was it, you can wipe
* the sweat from your forehead now. :-)
*/
return true;
}
/** NICK command */
bool TreeSocket::IntroduceClient(const std::string &source, std::deque ¶ms)
{
if (params.size() < 8)
return true;
if (params.size() > 8)
{
this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+params[1]+" :Invalid client introduction ("+params[1]+"?)");
return true;
}
// NICK age nick host dhost ident +modes ip :gecos
// 0 1 2 3 4 5 6 7
time_t age = atoi(params[0].c_str());
const char* tempnick = params[1].c_str();
Instance->Log(DEBUG,"New remote client %s",tempnick);
user_hash::iterator iter = this->Instance->clientlist->find(tempnick);
if (iter != this->Instance->clientlist->end())
{
// nick collision
this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" KILL "+tempnick+" :Nickname collision");
userrec::QuitUser(this->Instance, iter->second, "Nickname collision");
return true;
}
userrec* _new = new userrec(this->Instance);
(*(this->Instance->clientlist))[tempnick] = _new;
_new->SetFd(FD_MAGIC_NUMBER);
strlcpy(_new->nick, tempnick,NICKMAX-1);
strlcpy(_new->host, params[2].c_str(),63);
strlcpy(_new->dhost, params[3].c_str(),63);
_new->server = this->Instance->FindServerNamePtr(source.c_str());
strlcpy(_new->ident, params[4].c_str(),IDENTMAX);
strlcpy(_new->fullname, params[7].c_str(),MAXGECOS);
_new->registered = REG_ALL;
_new->signon = age;
/*
* we need to remove the + from the modestring, so we can do our stuff
*/
std::string::size_type pos_after_plus = params[5].find_first_not_of('+');
if (pos_after_plus != std::string::npos)
params[5] = params[5].substr(pos_after_plus);
for (std::string::iterator v = params[5].begin(); v != params[5].end(); v++)
{
_new->modes[(*v)-65] = 1;
/* For each mode thats set, increase counter */
ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER);
if (mh)
mh->ChangeCount(1);
}
/* now we've done with modes processing, put the + back for remote servers */
params[5] = "+" + params[5];
#ifdef SUPPORT_IP6LINKS
if (params[6].find_first_of(":") != std::string::npos)
_new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
else
#endif
_new->SetSockAddr(AF_INET, params[6].c_str(), 0);
Instance->AddGlobalClone(_new);
this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString());
params[7] = ":" + params[7];
Utils->DoOneToAllButSender(source,"NICK", params, source);
// Increment the Source Servers User Count..
TreeServer* SourceServer = Utils->FindServer(source);
if (SourceServer)
{
SourceServer->AddUserCount();
}
FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
return true;
}
/** Send one or more FJOINs for a channel of users.
* If the length of a single line is more than 480-NICKMAX
* in length, it is split over multiple lines.
*/
void TreeSocket::SendFJoins(TreeServer* Current, chanrec* c)
{
std::string buffer;
char list[MAXBUF];
std::string individual_halfops = std::string(":")+this->Instance->Config->ServerName+" FMODE "+c->name+" "+ConvToStr(c->age);
size_t dlen, curlen;
dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
int numusers = 0;
char* ptr = list + dlen;
CUList *ulist = c->GetUsers();
std::string modes = "";
std::string params = "";
for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
{
// The first parameter gets a : before it
size_t ptrlen = snprintf(ptr, MAXBUF, " %s%s,%s", !numusers ? ":" : "", c->GetAllPrefixChars(i->second), i->second->nick);
curlen += ptrlen;
ptr += ptrlen;
numusers++;
if (curlen > (480-NICKMAX))
{
buffer.append(list).append("\r\n");
dlen = curlen = snprintf(list,MAXBUF,":%s FJOIN %s %lu",this->Instance->Config->ServerName,c->name,(unsigned long)c->age);
ptr = list + dlen;
ptrlen = 0;
numusers = 0;
}
}
if (numusers)
buffer.append(list).append("\r\n");
/* Sorry for the hax. Because newly created channels assume +nt,
* if this channel doesnt have +nt, explicitly send -n and -t for the missing modes.
*/
bool inverted = false;
if (!c->IsModeSet('n'))
{
modes.append("-n");
inverted = true;
}
if (!c->IsModeSet('t'))
{
modes.append("-t");
inverted = true;
}
if (inverted)
{
modes.append("+");
}
for (BanList::iterator b = c->bans.begin(); b != c->bans.end(); b++)
{
modes.append("b");
params.append(" ").append(b->data);
if (params.length() >= MAXMODES)
{
/* Wrap at MAXMODES */
buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params).append("\r\n");
modes = "";
params = "";
}
}
buffer.append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(c->ChanModes(true));
/* Only send these if there are any */
if (!modes.empty())
buffer.append("\r\n").append(":").append(this->Instance->Config->ServerName).append(" FMODE ").append(c->name).append(" ").append(ConvToStr(c->age)).append(" +").append(modes).append(params);
this->WriteLine(buffer);
}
/** Send G, Q, Z and E lines */
void TreeSocket::SendXLines(TreeServer* Current)
{
char data[MAXBUF];
std::string buffer;
std::string n = this->Instance->Config->ServerName;
const char* sn = n.c_str();
/* Yes, these arent too nice looking, but they get the job done */
for (std::vector::iterator i = Instance->XLines->zlines.begin(); i != Instance->XLines->zlines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->qlines.begin(); i != Instance->XLines->qlines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->glines.begin(); i != Instance->XLines->glines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->elines.begin(); i != Instance->XLines->elines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->pzlines.begin(); i != Instance->XLines->pzlines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE Z %s %s %lu %lu :%s\r\n",sn,(*i)->ipaddr,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->pqlines.begin(); i != Instance->XLines->pqlines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE Q %s %s %lu %lu :%s\r\n",sn,(*i)->nick,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->pglines.begin(); i != Instance->XLines->pglines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE G %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
for (std::vector::iterator i = Instance->XLines->pelines.begin(); i != Instance->XLines->pelines.end(); i++)
{
snprintf(data,MAXBUF,":%s ADDLINE E %s@%s %s %lu %lu :%s\r\n",sn,(*i)->identmask,(*i)->hostmask,(*i)->source,(unsigned long)(*i)->set_time,(unsigned long)(*i)->duration,(*i)->reason);
buffer.append(data);
}
if (!buffer.empty())
this->WriteLine(buffer);
}
/** Send channel modes and topics */
void TreeSocket::SendChannelModes(TreeServer* Current)
{
char data[MAXBUF];
std::deque list;
std::string n = this->Instance->Config->ServerName;
const char* sn = n.c_str();
for (chan_hash::iterator c = this->Instance->chanlist->begin(); c != this->Instance->chanlist->end(); c++)
{
SendFJoins(Current, c->second);
if (*c->second->topic)
{
snprintf(data,MAXBUF,":%s FTOPIC %s %lu %s :%s",sn,c->second->name,(unsigned long)c->second->topicset,c->second->setby,c->second->topic);
this->WriteLine(data);
}
FOREACH_MOD_I(this->Instance,I_OnSyncChannel,OnSyncChannel(c->second,(Module*)Utils->Creator,(void*)this));
list.clear();
c->second->GetExtList(list);
for (unsigned int j = 0; j < list.size(); j++)
{
FOREACH_MOD_I(this->Instance,I_OnSyncChannelMetaData,OnSyncChannelMetaData(c->second,(Module*)Utils->Creator,(void*)this,list[j]));
}
}
}
/** send all users and their oper state/modes */
void TreeSocket::SendUsers(TreeServer* Current)
{
char data[MAXBUF];
std::deque list;
std::string dataline;
for (user_hash::iterator u = this->Instance->clientlist->begin(); u != this->Instance->clientlist->end(); u++)
{
if (u->second->registered == REG_ALL)
{
snprintf(data,MAXBUF,":%s NICK %lu %s %s %s %s +%s %s :%s",u->second->server,(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->FormatModes(),u->second->GetIPString(),u->second->fullname);
this->WriteLine(data);
if (*u->second->oper)
{
snprintf(data,MAXBUF,":%s OPERTYPE %s", u->second->nick, u->second->oper);
this->WriteLine(data);
}
if (*u->second->awaymsg)
{
snprintf(data,MAXBUF,":%s AWAY :%s", u->second->nick, u->second->awaymsg);
this->WriteLine(data);
}
FOREACH_MOD_I(this->Instance,I_OnSyncUser,OnSyncUser(u->second,(Module*)Utils->Creator,(void*)this));
list.clear();
u->second->GetExtList(list);
for (unsigned int j = 0; j < list.size(); j++)
{
FOREACH_MOD_I(this->Instance,I_OnSyncUserMetaData,OnSyncUserMetaData(u->second,(Module*)Utils->Creator,(void*)this,list[j]));
}
}
}
}
/** This function is called when we want to send a netburst to a local
* server. There is a set order we must do this, because for example
* users require their servers to exist, and channels require their
* users to exist. You get the idea.
*/
void TreeSocket::DoBurst(TreeServer* s)
{
std::string burst = "BURST "+ConvToStr(Instance->Time(true));
std::string endburst = "ENDBURST";
// Because by the end of the netburst, it could be gone!
std::string name = s->GetName();
this->Instance->SNO->WriteToSnoMask('l',"Bursting to \2"+name+"\2.");
this->WriteLine(burst);
/* send our version string */
this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" VERSION :"+this->Instance->GetVersionString());
/* Send server tree */
this->SendServers(Utils->TreeRoot,s,1);
/* Send users and their oper status */
this->SendUsers(s);
/* Send everything else (channel modes, xlines etc) */
this->SendChannelModes(s);
this->SendXLines(s);
FOREACH_MOD_I(this->Instance,I_OnSyncOtherMetaData,OnSyncOtherMetaData((Module*)Utils->Creator,(void*)this));
this->WriteLine(endburst);
this->Instance->SNO->WriteToSnoMask('l',"Finished bursting to \2"+name+"\2.");
}
/** This function is called when we receive data from a remote
* server. We buffer the data in a std::string (it doesnt stay
* there for long), reading using InspSocket::Read() which can
* read up to 16 kilobytes in one operation.
*
* IF THIS FUNCTION RETURNS FALSE, THE CORE CLOSES AND DELETES
* THE SOCKET OBJECT FOR US.
*/
bool TreeSocket::OnDataReady()
{
char* data = this->Read();
/* Check that the data read is a valid pointer and it has some content */
if (data && *data)
{
this->in_buffer.append(data);
/* While there is at least one new line in the buffer,
* do something useful (we hope!) with it.
*/
while (in_buffer.find("\n") != std::string::npos)
{
std::string ret = in_buffer.substr(0,in_buffer.find("\n")-1);
in_buffer = in_buffer.substr(in_buffer.find("\n")+1,in_buffer.length()-in_buffer.find("\n"));
/* Use rfind here not find, as theres more
* chance of the \r being near the end of the
* string, not the start.
*/
if (ret.find("\r") != std::string::npos)
ret = in_buffer.substr(0,in_buffer.find("\r")-1);
/* Process this one, abort if it
* didnt return true.
*/
if (!this->ProcessLine(ret))
{
return false;
}
}
return true;
}
/* EAGAIN returns an empty but non-NULL string, so this
* evaluates to TRUE for EAGAIN but to FALSE for EOF.
*/
return (data && !*data);
}
int TreeSocket::WriteLine(std::string line)
{
Instance->Log(DEBUG, "-> %s", line.c_str());
line.append("\r\n");
return this->Write(line);
}
/* Handle ERROR command */
bool TreeSocket::Error(std::deque ¶ms)
{
if (params.size() < 1)
return false;
this->Instance->SNO->WriteToSnoMask('l',"ERROR from %s: %s",(InboundServerName != "" ? InboundServerName.c_str() : myhost.c_str()),params[0].c_str());
/* we will return false to cause the socket to close. */
return false;
}
/** remote MOTD. leet, huh? */
bool TreeSocket::Motd(const std::string &prefix, std::deque ¶ms)
{
if (params.size() > 0)
{
if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
{
/* It's for our server */
string_list results;
userrec* source = this->Instance->FindNick(prefix);
if (source)
{
std::deque par;
par.push_back(prefix);
par.push_back("");
if (!Instance->Config->MOTD.size())
{
par[1] = std::string("::")+Instance->Config->ServerName+" 422 "+source->nick+" :Message of the day file is missing.";
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
return true;
}
par[1] = std::string("::")+Instance->Config->ServerName+" 375 "+source->nick+" :"+Instance->Config->ServerName+" message of the day";
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
for (unsigned int i = 0; i < Instance->Config->MOTD.size(); i++)
{
par[1] = std::string("::")+Instance->Config->ServerName+" 372 "+source->nick+" :- "+Instance->Config->MOTD[i];
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
}
par[1] = std::string("::")+Instance->Config->ServerName+" 376 "+source->nick+" End of message of the day.";
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
}
}
else
{
/* Pass it on */
userrec* source = this->Instance->FindNick(prefix);
if (source)
Utils->DoOneToOne(prefix, "MOTD", params, params[0]);
}
}
return true;
}
/** remote ADMIN. leet, huh? */
bool TreeSocket::Admin(const std::string &prefix, std::deque ¶ms)
{
if (params.size() > 0)
{
if (this->Instance->MatchText(this->Instance->Config->ServerName, params[0]))
{
/* It's for our server */
string_list results;
userrec* source = this->Instance->FindNick(prefix);
if (source)
{
std::deque par;
par.push_back(prefix);
par.push_back("");
par[1] = std::string("::")+Instance->Config->ServerName+" 256 "+source->nick+" :Administrative info for "+Instance->Config->ServerName;
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
par[1] = std::string("::")+Instance->Config->ServerName+" 257 "+source->nick+" :Name - "+Instance->Config->AdminName;
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :Nickname - "+Instance->Config->AdminNick;
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
par[1] = std::string("::")+Instance->Config->ServerName+" 258 "+source->nick+" :E-Mail - "+Instance->Config->AdminEmail;
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
}
}
else
{
/* Pass it on */
userrec* source = this->Instance->FindNick(prefix);
if (source)
Utils->DoOneToOne(prefix, "ADMIN", params, params[0]);
}
}
return true;
}
bool TreeSocket::Stats(const std::string &prefix, std::deque ¶ms)
{
/* Get the reply to a STATS query if it matches this servername,
* and send it back as a load of PUSH queries
*/
if (params.size() > 1)
{
if (this->Instance->MatchText(this->Instance->Config->ServerName, params[1]))
{
/* It's for our server */
string_list results;
userrec* source = this->Instance->FindNick(prefix);
if (source)
{
std::deque par;
par.push_back(prefix);
par.push_back("");
DoStats(this->Instance, *(params[0].c_str()), source, results);
for (size_t i = 0; i < results.size(); i++)
{
par[1] = "::" + results[i];
Utils->DoOneToOne(this->Instance->Config->ServerName, "PUSH",par, source->server);
}
}
}
else
{
/* Pass it on */
userrec* source = this->Instance->FindNick(prefix);
if (source)
Utils->DoOneToOne(prefix, "STATS", params, params[1]);
}
}
return true;
}
/** Because the core won't let users or even SERVERS set +o,
* we use the OPERTYPE command to do this.
*/
bool TreeSocket::OperType(const std::string &prefix, std::deque ¶ms)
{
if (params.size() != 1)
return true;
std::string opertype = params[0];
userrec* u = this->Instance->FindNick(prefix);
if (u)
{
u->modes[UM_OPERATOR] = 1;
this->Instance->all_opers.push_back(u);
strlcpy(u->oper,opertype.c_str(),NICKMAX-1);
Utils->DoOneToAllButSender(u->nick,"OPERTYPE",params,u->server);
this->Instance->SNO->WriteToSnoMask('o',"From %s: User %s (%s@%s) is now an IRC operator of type %s",u->server, u->nick,u->ident,u->host,irc::Spacify(opertype.c_str()));
}
return true;
}
/** Because Andy insists that services-compatible servers must
* implement SVSNICK and SVSJOIN, that's exactly what we do :p
*/
bool TreeSocket::ForceNick(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 3)
return true;
userrec* u = this->Instance->FindNick(params[0]);
if (u)
{
Utils->DoOneToAllButSender(prefix,"SVSNICK",params,prefix);
if (IS_LOCAL(u))
{
std::deque par;
par.push_back(params[1]);
if (!u->ForceNickChange(params[1].c_str()))
{
userrec::QuitUser(this->Instance, u, "Nickname collision");
return true;
}
u->age = atoi(params[2].c_str());
}
}
return true;
}
/*
* Remote SQUIT (RSQUIT). Routing works similar to SVSNICK: Route it to the server that the target is connected to locally,
* then let that server do the dirty work (squit it!). Example:
* A -> B -> C -> D: oper on A squits D, A routes to B, B routes to C, C notices D connected locally, kills it. -- w00t
*/
bool TreeSocket::RemoteSquit(const std::string &prefix, std::deque ¶ms)
{
/* ok.. :w00t RSQUIT jupe.barafranca.com :reason here */
if (params.size() < 2)
return true;
TreeServer* s = Utils->FindServerMask(params[0]);
if (s)
{
if (s == Utils->TreeRoot)
{
this->Instance->SNO->WriteToSnoMask('l',"What the fuck, I recieved a remote SQUIT for myself? :< (from %s", prefix.c_str());
return true;
}
TreeSocket* sock = s->GetSocket();
if (sock)
{
/* it's locally connected, KILL IT! */
Instance->SNO->WriteToSnoMask('l',"RSQUIT: Server \002%s\002 removed from network by %s: %s", params[0].c_str(), prefix.c_str(), params[1].c_str());
sock->Squit(s,"Server quit by " + prefix + ": " + params[1]);
Instance->SE->DelFd(sock);
sock->Close();
delete sock;
}
else
{
/* route the rsquit */
params[1] = ":" + params[1];
Utils->DoOneToOne(prefix, "RSQUIT", params, params[0]);
}
}
else
{
/* mother fucker! it doesn't exist */
}
return true;
}
bool TreeSocket::ServiceJoin(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 2)
return true;
userrec* u = this->Instance->FindNick(params[0]);
if (u)
{
/* only join if it's local, otherwise just pass it on! */
if (IS_LOCAL(u))
chanrec::JoinUser(this->Instance, u, params[1].c_str(), false);
Utils->DoOneToAllButSender(prefix,"SVSJOIN",params,prefix);
}
return true;
}
bool TreeSocket::RemoteRehash(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return false;
std::string servermask = params[0];
if (this->Instance->MatchText(this->Instance->Config->ServerName,servermask))
{
this->Instance->SNO->WriteToSnoMask('l',"Remote rehash initiated by \002"+prefix+"\002.");
this->Instance->RehashServer();
Utils->ReadConfiguration(false);
InitializeDisabledCommands(Instance->Config->DisabledCommands, Instance);
}
Utils->DoOneToAllButSender(prefix,"REHASH",params,prefix);
return true;
}
bool TreeSocket::RemoteKill(const std::string &prefix, std::deque ¶ms)
{
if (params.size() != 2)
return true;
std::string nick = params[0];
userrec* u = this->Instance->FindNick(prefix);
userrec* who = this->Instance->FindNick(nick);
if (who)
{
/* Prepend kill source, if we don't have one */
std::string sourceserv = prefix;
if (u)
{
sourceserv = u->server;
}
if (*(params[1].c_str()) != '[')
{
params[1] = "[" + sourceserv + "] Killed (" + params[1] +")";
}
std::string reason = params[1];
params[1] = ":" + params[1];
Utils->DoOneToAllButSender(prefix,"KILL",params,sourceserv);
who->Write(":%s KILL %s :%s (%s)", sourceserv.c_str(), who->nick, sourceserv.c_str(), reason.c_str());
userrec::QuitUser(this->Instance,who,reason);
}
return true;
}
bool TreeSocket::LocalPong(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
if (params.size() == 1)
{
TreeServer* ServerSource = Utils->FindServer(prefix);
if (ServerSource)
{
ServerSource->SetPingFlag();
}
}
else
{
std::string forwardto = params[1];
if (forwardto == this->Instance->Config->ServerName)
{
/*
* this is a PONG for us
* if the prefix is a user, check theyre local, and if they are,
* dump the PONG reply back to their fd. If its a server, do nowt.
* Services might want to send these s->s, but we dont need to yet.
*/
userrec* u = this->Instance->FindNick(prefix);
if (u)
{
u->WriteServ("PONG %s %s",params[0].c_str(),params[1].c_str());
}
}
else
{
// not for us, pass it on :)
Utils->DoOneToOne(prefix,"PONG",params,forwardto);
}
}
return true;
}
bool TreeSocket::MetaData(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 3)
return true;
TreeServer* ServerSource = Utils->FindServer(prefix);
if (ServerSource)
{
if (params[0] == "*")
{
FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_OTHER,NULL,params[1],params[2]));
}
else if (*(params[0].c_str()) == '#')
{
chanrec* c = this->Instance->FindChan(params[0]);
if (c)
{
FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_CHANNEL,c,params[1],params[2]));
}
}
else if (*(params[0].c_str()) != '#')
{
userrec* u = this->Instance->FindNick(params[0]);
if (u)
{
FOREACH_MOD_I(this->Instance,I_OnDecodeMetaData,OnDecodeMetaData(TYPE_USER,u,params[1],params[2]));
}
}
}
params[2] = ":" + params[2];
Utils->DoOneToAllButSender(prefix,"METADATA",params,prefix);
return true;
}
bool TreeSocket::ServerVersion(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
TreeServer* ServerSource = Utils->FindServer(prefix);
if (ServerSource)
{
ServerSource->SetVersion(params[0]);
}
params[0] = ":" + params[0];
Utils->DoOneToAllButSender(prefix,"VERSION",params,prefix);
return true;
}
bool TreeSocket::ChangeHost(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
userrec* u = this->Instance->FindNick(prefix);
if (u)
{
u->ChangeDisplayedHost(params[0].c_str());
Utils->DoOneToAllButSender(prefix,"FHOST",params,u->server);
}
return true;
}
bool TreeSocket::AddLine(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 6)
return true;
bool propogate = false;
if (!this->bursting)
Utils->lines_to_apply = 0;
switch (*(params[0].c_str()))
{
case 'Z':
propogate = Instance->XLines->add_zline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
Instance->XLines->zline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
if (propogate)
Utils->lines_to_apply |= APPLY_ZLINES;
break;
case 'Q':
propogate = Instance->XLines->add_qline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
Instance->XLines->qline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
if (propogate)
Utils->lines_to_apply |= APPLY_QLINES;
break;
case 'E':
propogate = Instance->XLines->add_eline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
Instance->XLines->eline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
break;
case 'G':
propogate = Instance->XLines->add_gline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
Instance->XLines->gline_set_creation_time(params[1].c_str(), atoi(params[3].c_str()));
if (propogate)
Utils->lines_to_apply |= APPLY_GLINES;
break;
case 'K':
propogate = Instance->XLines->add_kline(atoi(params[4].c_str()), params[2].c_str(), params[5].c_str(), params[1].c_str());
if (propogate)
Utils->lines_to_apply |= APPLY_KLINES;
break;
default:
/* Just in case... */
this->Instance->SNO->WriteToSnoMask('x',"\2WARNING\2: Invalid xline type '"+params[0]+"' sent by server "+prefix+", ignored!");
propogate = false;
break;
}
/* Send it on its way */
if (propogate)
{
if (atoi(params[4].c_str()))
{
this->Instance->SNO->WriteToSnoMask('x',"%s Added %cLINE on %s to expire in %lu seconds (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),atoi(params[4].c_str()),params[5].c_str());
}
else
{
this->Instance->SNO->WriteToSnoMask('x',"%s Added permenant %cLINE on %s (%s).",prefix.c_str(),*(params[0].c_str()),params[1].c_str(),params[5].c_str());
}
params[5] = ":" + params[5];
Utils->DoOneToAllButSender(prefix,"ADDLINE",params,prefix);
}
if (!this->bursting)
{
Instance->XLines->apply_lines(Utils->lines_to_apply);
Utils->lines_to_apply = 0;
}
return true;
}
bool TreeSocket::ChangeName(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
userrec* u = this->Instance->FindNick(prefix);
if (u)
{
u->ChangeName(params[0].c_str());
params[0] = ":" + params[0];
Utils->DoOneToAllButSender(prefix,"FNAME",params,u->server);
}
return true;
}
bool TreeSocket::Whois(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
userrec* u = this->Instance->FindNick(prefix);
if (u)
{
// an incoming request
if (params.size() == 1)
{
userrec* x = this->Instance->FindNick(params[0]);
if ((x) && (IS_LOCAL(x)))
{
userrec* x = this->Instance->FindNick(params[0]);
char signon[MAXBUF];
char idle[MAXBUF];
snprintf(signon,MAXBUF,"%lu",(unsigned long)x->signon);
snprintf(idle,MAXBUF,"%lu",(unsigned long)abs((x->idle_lastmsg)-Instance->Time(true)));
std::deque par;
par.push_back(prefix);
par.push_back(signon);
par.push_back(idle);
// ours, we're done, pass it BACK
Utils->DoOneToOne(params[0],"IDLE",par,u->server);
}
else
{
// not ours pass it on
Utils->DoOneToOne(prefix,"IDLE",params,x->server);
}
}
else if (params.size() == 3)
{
std::string who_did_the_whois = params[0];
userrec* who_to_send_to = this->Instance->FindNick(who_did_the_whois);
if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
{
// an incoming reply to a whois we sent out
std::string nick_whoised = prefix;
unsigned long signon = atoi(params[1].c_str());
unsigned long idle = atoi(params[2].c_str());
if ((who_to_send_to) && (IS_LOCAL(who_to_send_to)))
do_whois(this->Instance,who_to_send_to,u,signon,idle,nick_whoised.c_str());
}
else
{
// not ours, pass it on
Utils->DoOneToOne(prefix,"IDLE",params,who_to_send_to->server);
}
}
}
return true;
}
bool TreeSocket::Push(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 2)
return true;
userrec* u = this->Instance->FindNick(params[0]);
if (!u)
return true;
if (IS_LOCAL(u))
{
u->Write(params[1]);
}
else
{
// continue the raw onwards
params[1] = ":" + params[1];
Utils->DoOneToOne(prefix,"PUSH",params,u->server);
}
return true;
}
bool TreeSocket::HandleSetTime(const std::string &prefix, std::deque ¶ms)
{
if (!params.size() || !Utils->EnableTimeSync)
return true;
bool force = false;
if ((params.size() == 2) && (params[1] == "FORCE"))
force = true;
time_t rts = atoi(params[0].c_str());
time_t us = Instance->Time(true);
if (rts == us)
{
Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
}
else if (force || (rts < us))
{
int old = Instance->SetTimeDelta(rts - us);
Instance->Log(DEBUG, "%s TS (diff %d) from %s applied (old delta was %d)", (force) ? "Forced" : "Lower", rts - us, prefix.c_str(), old);
Utils->DoOneToAllButSender(prefix, "TIMESET", params, prefix);
}
else
{
Instance->Log(DEBUG, "Higher TS (diff %d) from %s overridden", us - rts, prefix.c_str());
std::deque oparams;
oparams.push_back(ConvToStr(us));
Utils->DoOneToMany(prefix, "TIMESET", oparams);
}
return true;
}
bool TreeSocket::Time(const std::string &prefix, std::deque ¶ms)
{
// :source.server TIME remote.server sendernick
// :remote.server TIME source.server sendernick TS
if (params.size() == 2)
{
// someone querying our time?
if (this->Instance->Config->ServerName == params[0])
{
userrec* u = this->Instance->FindNick(params[1]);
if (u)
{
params.push_back(ConvToStr(Instance->Time(false)));
params[0] = prefix;
Utils->DoOneToOne(this->Instance->Config->ServerName,"TIME",params,params[0]);
}
}
else
{
// not us, pass it on
userrec* u = this->Instance->FindNick(params[1]);
if (u)
Utils->DoOneToOne(prefix,"TIME",params,params[0]);
}
}
else if (params.size() == 3)
{
// a response to a previous TIME
userrec* u = this->Instance->FindNick(params[1]);
if ((u) && (IS_LOCAL(u)))
{
time_t rawtime = atol(params[2].c_str());
struct tm * timeinfo;
timeinfo = localtime(&rawtime);
char tms[26];
snprintf(tms,26,"%s",asctime(timeinfo));
tms[24] = 0;
u->WriteServ("391 %s %s :%s",u->nick,prefix.c_str(),tms);
}
else
{
if (u)
Utils->DoOneToOne(prefix,"TIME",params,u->server);
}
}
return true;
}
bool TreeSocket::LocalPing(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
if (params.size() == 1)
{
std::string stufftobounce = params[0];
this->WriteLine(std::string(":")+this->Instance->Config->ServerName+" PONG "+stufftobounce);
return true;
}
else
{
std::string forwardto = params[1];
if (forwardto == this->Instance->Config->ServerName)
{
// this is a ping for us, send back PONG to the requesting server
params[1] = params[0];
params[0] = forwardto;
Utils->DoOneToOne(forwardto,"PONG",params,params[1]);
}
else
{
// not for us, pass it on :)
Utils->DoOneToOne(prefix,"PING",params,forwardto);
}
return true;
}
}
bool TreeSocket::RemoveStatus(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 1)
return true;
chanrec* c = Instance->FindChan(params[0]);
if (c)
{
irc::modestacker modestack(false);
CUList *ulist = c->GetUsers();
const char* y[127];
std::deque stackresult;
std::string x;
for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
{
std::string modesequence = Instance->Modes->ModeString(i->second, c);
if (modesequence.length())
{
irc::spacesepstream sep(modesequence);
std::string modeletters = sep.GetToken();
while (!modeletters.empty())
{
char mletter = *(modeletters.begin());
modestack.Push(mletter,sep.GetToken());
modeletters.erase(modeletters.begin());
}
}
}
while (modestack.GetStackedLine(stackresult))
{
stackresult.push_front(ConvToStr(c->age));
stackresult.push_front(c->name);
Utils->DoOneToMany(Instance->Config->ServerName, "FMODE", stackresult);
stackresult.erase(stackresult.begin() + 1);
for (size_t z = 0; z < stackresult.size(); z++)
{
y[z] = stackresult[z].c_str();
}
userrec* n = new userrec(Instance);
n->SetFd(FD_MAGIC_NUMBER);
Instance->SendMode(y, stackresult.size(), n);
delete n;
}
}
return true;
}
bool TreeSocket::RemoteServer(const std::string &prefix, std::deque ¶ms)
{
if (params.size() < 4)
return false;
std::string servername = params[0];
std::string password = params[1];
// hopcount is not used for a remote server, we calculate this ourselves
std::string description = params[3];
TreeServer* ParentOfThis = Utils->FindServer(prefix);
if (!ParentOfThis)
{
this->WriteLine("ERROR :Protocol error - Introduced remote server from unknown server "+prefix);
return false;
}
TreeServer* CheckDupe = Utils->FindServer(servername);
if (CheckDupe)
{
this->WriteLine("ERROR :Server "+servername+" already exists!");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+servername+"\2 denied, already exists");
return false;
}
TreeServer* Node = new TreeServer(this->Utils,this->Instance,servername,description,ParentOfThis,NULL);
ParentOfThis->AddChild(Node);
params[3] = ":" + params[3];
Utils->DoOneToAllButSender(prefix,"SERVER",params,prefix);
this->Instance->SNO->WriteToSnoMask('l',"Server \002"+prefix+"\002 introduced server \002"+servername+"\002 ("+description+")");
return true;
}
bool TreeSocket::Outbound_Reply_Server(std::deque ¶ms)
{
if (params.size() < 4)
return false;
irc::string servername = params[0].c_str();
std::string sname = params[0];
std::string password = params[1];
int hops = atoi(params[2].c_str());
if (hops)
{
this->WriteLine("ERROR :Server too far away for authentication");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
return false;
}
std::string description = params[3];
for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
{
if ((x->Name == servername) && (x->RecvPass == password))
{
TreeServer* CheckDupe = Utils->FindServer(sname);
if (CheckDupe)
{
this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
return false;
}
// Begin the sync here. this kickstarts the
// other side, waiting in WAIT_AUTH_2 state,
// into starting their burst, as it shows
// that we're happy.
this->LinkState = CONNECTED;
// we should add the details of this server now
// to the servers tree, as a child of the root
// node.
TreeServer* Node = new TreeServer(this->Utils,this->Instance,sname,description,Utils->TreeRoot,this);
Utils->TreeRoot->AddChild(Node);
params[3] = ":" + params[3];
Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,sname);
this->bursting = true;
this->DoBurst(Node);
return true;
}
}
this->WriteLine("ERROR :Invalid credentials");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
return false;
}
bool TreeSocket::Inbound_Server(std::deque ¶ms)
{
if (params.size() < 4)
return false;
irc::string servername = params[0].c_str();
std::string sname = params[0];
std::string password = params[1];
int hops = atoi(params[2].c_str());
if (hops)
{
this->WriteLine("ERROR :Server too far away for authentication");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, server is too far away for authentication");
return false;
}
std::string description = params[3];
for (std::vector::iterator x = Utils->LinkBlocks.begin(); x < Utils->LinkBlocks.end(); x++)
{
if ((x->Name == servername) && (x->RecvPass == password))
{
TreeServer* CheckDupe = Utils->FindServer(sname);
if (CheckDupe)
{
this->WriteLine("ERROR :Server "+sname+" already exists on server "+CheckDupe->GetParent()->GetName()+"!");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, already exists on server "+CheckDupe->GetParent()->GetName());
return false;
}
this->Instance->SNO->WriteToSnoMask('l',"Verified incoming server connection from \002"+sname+"\002["+(x->HiddenFromStats ? "" : this->GetIP())+"] ("+description+")");
if (this->Hook)
{
std::string name = InspSocketNameRequest((Module*)Utils->Creator, this->Hook).Send();
this->Instance->SNO->WriteToSnoMask('l',"Connection from \2"+sname+"\2["+(x->HiddenFromStats ? "" : this->GetIP())+"] using transport \2"+name+"\2");
}
this->InboundServerName = sname;
this->InboundDescription = description;
// this is good. Send our details: Our server name and description and hopcount of 0,
// along with the sendpass from this block.
this->WriteLine(std::string("SERVER ")+this->Instance->Config->ServerName+" "+x->SendPass+" 0 :"+this->Instance->Config->ServerDesc);
// move to the next state, we are now waiting for THEM.
this->LinkState = WAIT_AUTH_2;
return true;
}
}
this->WriteLine("ERROR :Invalid credentials");
this->Instance->SNO->WriteToSnoMask('l',"Server connection from \2"+sname+"\2 denied, invalid link credentials");
return false;
}
void TreeSocket::Split(const std::string &line, std::deque &n)
{
n.clear();
irc::tokenstream tokens(line);
std::string param;
while ((param = tokens.GetToken()) != "")
n.push_back(param);
return;
}
bool TreeSocket::ProcessLine(std::string &line)
{
std::deque params;
irc::string command;
std::string prefix;
line = line.substr(0, line.find_first_of("\r\n"));
if (line.empty())
return true;
Instance->Log(DEBUG, "<- %s", line.c_str());
this->Split(line.c_str(),params);
if ((params[0][0] == ':') && (params.size() > 1))
{
prefix = params[0].substr(1);
params.pop_front();
}
command = params[0].c_str();
params.pop_front();
switch (this->LinkState)
{
TreeServer* Node;
case WAIT_AUTH_1:
// Waiting for SERVER command from remote server. Server initiating
// the connection sends the first SERVER command, listening server
// replies with theirs if its happy, then if the initiator is happy,
// it starts to send its net sync, which starts the merge, otherwise
// it sends an ERROR.
if (command == "PASS")
{
/* Silently ignored */
}
else if (command == "SERVER")
{
return this->Inbound_Server(params);
}
else if (command == "ERROR")
{
return this->Error(params);
}
else if (command == "USER")
{
this->WriteLine("ERROR :Client connections to this port are prohibited.");
return false;
}
else if (command == "CAPAB")
{
return this->Capab(params);
}
else if ((command == "U") || (command == "S"))
{
this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
return false;
}
else
{
std::string error("ERROR :Invalid command in negotiation phase: ");
error.append(command.c_str());
this->WriteLine(error);
return false;
}
break;
case WAIT_AUTH_2:
// Waiting for start of other side's netmerge to say they liked our
// password.
if (command == "SERVER")
{
// cant do this, they sent it to us in the WAIT_AUTH_1 state!
// silently ignore.
return true;
}
else if ((command == "U") || (command == "S"))
{
this->WriteLine("ERROR :Cannot use the old-style mesh linking protocol with m_spanningtree.so!");
return false;
}
else if (command == "BURST")
{
if (params.size() && Utils->EnableTimeSync)
{
/* If a time stamp is provided, apply synchronization */
bool force = false;
time_t them = atoi(params[0].c_str());
time_t us = Instance->Time(true);
int delta = them - us;
if ((params.size() == 2) && (params[1] == "FORCE"))
force = true;
if ((delta < -600) || (delta > 600))
{
this->Instance->SNO->WriteToSnoMask('l',"\2ERROR\2: Your clocks are out by %d seconds (this is more than ten minutes). Link aborted, \2PLEASE SYNC YOUR CLOCKS!\2",abs(delta));
this->WriteLine("ERROR :Your clocks are out by "+ConvToStr(abs(delta))+" seconds (this is more than ten minutes). Link aborted, PLEASE SYNC YOUR CLOCKS!");
return false;
}
if (force || (us > them))
{
this->Instance->SetTimeDelta(them - us);
// Send this new timestamp to any other servers
Utils->DoOneToMany(Utils->TreeRoot->GetName(), "TIMESET", params);
}
else
{
// Override the timestamp
this->WriteLine(":" + Utils->TreeRoot->GetName() + " TIMESET " + ConvToStr(us));
}
}
this->LinkState = CONNECTED;
Node = new TreeServer(this->Utils,this->Instance,InboundServerName,InboundDescription,Utils->TreeRoot,this);
Utils->TreeRoot->AddChild(Node);
params.clear();
params.push_back(InboundServerName);
params.push_back("*");
params.push_back("1");
params.push_back(":"+InboundDescription);
Utils->DoOneToAllButSender(Utils->TreeRoot->GetName(),"SERVER",params,InboundServerName);
this->bursting = true;
this->DoBurst(Node);
}
else if (command == "ERROR")
{
return this->Error(params);
}
else if (command == "CAPAB")
{
return this->Capab(params);
}
break;
case LISTENER:
this->WriteLine("ERROR :Internal error -- listening socket accepted its own descriptor!!!");
return false;
break;
case CONNECTING:
if (command == "SERVER")
{
// another server we connected to, which was in WAIT_AUTH_1 state,
// has just sent us their credentials. If we get this far, theyre
// happy with OUR credentials, and they are now in WAIT_AUTH_2 state.
// if we're happy with this, we should send our netburst which
// kickstarts the merge.
return this->Outbound_Reply_Server(params);
}
else if (command == "ERROR")
{
return this->Error(params);
}
break;
case CONNECTED:
// This is the 'authenticated' state, when all passwords
// have been exchanged and anything past this point is taken
// as gospel.
if (prefix != "")
{
std::string direction = prefix;
userrec* t = this->Instance->FindNick(prefix);
if (t)
{
direction = t->server;
}
TreeServer* route_back_again = Utils->BestRouteTo(direction);
if ((!route_back_again) || (route_back_again->GetSocket() != this))
{
if (route_back_again)
Instance->Log(DEBUG,"Protocol violation: Fake direction in command '%s' from connection '%s'",line.c_str(),this->GetName().c_str());
return true;
}
/* Fix by brain:
* When there is activity on the socket, reset the ping counter so
* that we're not wasting bandwidth pinging an active server.
*/
route_back_again->SetNextPingTime(time(NULL) + 60);
route_back_again->SetPingFlag();
}
if (command == "SVSMODE")
{
/* Services expects us to implement
* SVSMODE. In inspircd its the same as
* MODE anyway.
*/
command = "MODE";
}
std::string target = "";
/* Yes, know, this is a mess. Its reasonably fast though as we're
* working with std::string here.
*/
if ((command == "NICK") && (params.size() > 1))
{
return this->IntroduceClient(prefix,params);
}
else if (command == "FJOIN")
{
return this->ForceJoin(prefix,params);
}
else if (command == "STATS")
{
return this->Stats(prefix, params);
}
else if (command == "MOTD")
{
return this->Motd(prefix, params);
}
else if (command == "ADMIN")
{
return this->Admin(prefix, params);
}
else if (command == "SERVER")
{
return this->RemoteServer(prefix,params);
}
else if (command == "ERROR")
{
return this->Error(params);
}
else if (command == "OPERTYPE")
{
return this->OperType(prefix,params);
}
else if (command == "FMODE")
{
return this->ForceMode(prefix,params);
}
else if (command == "KILL")
{
return this->RemoteKill(prefix,params);
}
else if (command == "FTOPIC")
{
return this->ForceTopic(prefix,params);
}
else if (command == "REHASH")
{
return this->RemoteRehash(prefix,params);
}
else if (command == "METADATA")
{
return this->MetaData(prefix,params);
}
else if (command == "REMSTATUS")
{
return this->RemoveStatus(prefix,params);
}
else if (command == "PING")
{
/*
* We just got a ping from a server that's bursting.
* This can't be right, so set them to not bursting, and
* apply their lines.
*/
if (this->bursting)
{
this->bursting = false;
Instance->XLines->apply_lines(Utils->lines_to_apply);
Utils->lines_to_apply = 0;
}
if (prefix == "")
{
prefix = this->GetName();
}
return this->LocalPing(prefix,params);
}
else if (command == "PONG")
{
/*
* We just got a pong from a server that's bursting.
* This can't be right, so set them to not bursting, and
* apply their lines.
*/
if (this->bursting)
{
this->bursting = false;
Instance->XLines->apply_lines(Utils->lines_to_apply);
Utils->lines_to_apply = 0;
}
if (prefix == "")
{
prefix = this->GetName();
}
return this->LocalPong(prefix,params);
}
else if (command == "VERSION")
{
return this->ServerVersion(prefix,params);
}
else if (command == "FHOST")
{
return this->ChangeHost(prefix,params);
}
else if (command == "FNAME")
{
return this->ChangeName(prefix,params);
}
else if (command == "ADDLINE")
{
return this->AddLine(prefix,params);
}
else if (command == "SVSNICK")
{
if (prefix == "")
{
prefix = this->GetName();
}
return this->ForceNick(prefix,params);
}
else if (command == "RSQUIT")
{
return this->RemoteSquit(prefix, params);
}
else if (command == "IDLE")
{
return this->Whois(prefix,params);
}
else if (command == "PUSH")
{
return this->Push(prefix,params);
}
else if (command == "TIMESET")
{
return this->HandleSetTime(prefix, params);
}
else if (command == "TIME")
{
return this->Time(prefix,params);
}
else if ((command == "KICK") && (Utils->IsServer(prefix)))
{
std::string sourceserv = this->myhost;
if (params.size() == 3)
{
userrec* user = this->Instance->FindNick(params[1]);
chanrec* chan = this->Instance->FindChan(params[0]);
if (user && chan)
{
if (!chan->ServerKickUser(user, params[2].c_str(), false))
/* Yikes, the channels gone! */
delete chan;
}
}
if (this->InboundServerName != "")
{
sourceserv = this->InboundServerName;
}
return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
}
else if (command == "SVSJOIN")
{
if (prefix == "")
{
prefix = this->GetName();
}
return this->ServiceJoin(prefix,params);
}
else if (command == "SQUIT")
{
if (params.size() == 2)
{
this->Squit(Utils->FindServer(params[0]),params[1]);
}
return true;
}
else if (command == "OPERNOTICE")
{
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
sourceserv = this->InboundServerName;
if (params.size() >= 1)
Instance->WriteOpers("*** From " + sourceserv + ": " + params[0]);
return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
}
else if (command == "MODENOTICE")
{
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
sourceserv = this->InboundServerName;
if (params.size() >= 2)
{
Instance->WriteMode(params[0].c_str(), WM_AND, "*** From %s: %s", sourceserv.c_str(), params[1].c_str());
}
return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
}
else if (command == "SNONOTICE")
{
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
sourceserv = this->InboundServerName;
if (params.size() >= 2)
{
Instance->SNO->WriteToSnoMask(*(params[0].c_str()), "From " + sourceserv + ": "+ params[1]);
}
return Utils->DoOneToAllButSenderRaw(line, sourceserv, prefix, command, params);
}
else if (command == "ENDBURST")
{
this->bursting = false;
Instance->XLines->apply_lines(Utils->lines_to_apply);
Utils->lines_to_apply = 0;
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
{
sourceserv = this->InboundServerName;
}
this->Instance->SNO->WriteToSnoMask('l',"Received end of netburst from \2%s\2",sourceserv.c_str());
Event rmode((char*)sourceserv.c_str(), (Module*)Utils->Creator, "new_server");
rmode.Send(Instance);
return true;
}
else
{
// not a special inter-server command.
// Emulate the actual user doing the command,
// this saves us having a huge ugly parser.
userrec* who = this->Instance->FindNick(prefix);
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
{
sourceserv = this->InboundServerName;
}
if ((!who) && (command == "MODE"))
{
if (Utils->IsServer(prefix))
{
const char* modelist[127];
for (size_t i = 0; i < params.size(); i++)
modelist[i] = params[i].c_str();
userrec* fake = new userrec(Instance);
fake->SetFd(FD_MAGIC_NUMBER);
this->Instance->SendMode(modelist, params.size(), fake);
delete fake;
/* Hot potato! pass it on! */
return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
}
}
if (who)
{
if ((command == "NICK") && (params.size() > 0))
{
/* On nick messages, check that the nick doesnt
* already exist here. If it does, kill their copy,
* and our copy.
*/
userrec* x = this->Instance->FindNick(params[0]);
if ((x) && (x != who))
{
std::deque p;
p.push_back(params[0]);
p.push_back("Nickname collision ("+prefix+" -> "+params[0]+")");
Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
p.clear();
p.push_back(prefix);
p.push_back("Nickname collision");
Utils->DoOneToMany(this->Instance->Config->ServerName,"KILL",p);
userrec::QuitUser(this->Instance,x,"Nickname collision ("+prefix+" -> "+params[0]+")");
userrec* y = this->Instance->FindNick(prefix);
if (y)
{
userrec::QuitUser(this->Instance,y,"Nickname collision");
}
return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
}
}
// its a user
target = who->server;
const char* strparams[127];
for (unsigned int q = 0; q < params.size(); q++)
{
strparams[q] = params[q].c_str();
}
switch (this->Instance->CallCommandHandler(command.c_str(), strparams, params.size(), who))
{
case CMD_INVALID:
this->WriteLine("ERROR :Unrecognised command '"+std::string(command.c_str())+"' -- possibly loaded mismatched modules");
return false;
break;
case CMD_FAILURE:
return true;
break;
default:
/* CMD_SUCCESS and CMD_USER_DELETED fall through here */
break;
}
}
else
{
// its not a user. Its either a server, or somethings screwed up.
if (Utils->IsServer(prefix))
target = this->Instance->Config->ServerName;
else
return true;
}
return Utils->DoOneToAllButSenderRaw(line,sourceserv,prefix,command,params);
}
return true;
break;
}
return true;
}
std::string TreeSocket::GetName()
{
std::string sourceserv = this->myhost;
if (this->InboundServerName != "")
{
sourceserv = this->InboundServerName;
}
return sourceserv;
}
void TreeSocket::OnTimeout()
{
if (this->LinkState == CONNECTING)
{
this->Instance->SNO->WriteToSnoMask('l',"CONNECT: Connection to \002"+myhost+"\002 timed out.");
Link* MyLink = Utils->FindLink(myhost);
if (MyLink)
Utils->DoFailOver(MyLink);
}
}
void TreeSocket::OnClose()
{
// Connection closed.
// If the connection is fully up (state CONNECTED)
// then propogate a netsplit to all peers.
std::string quitserver = this->myhost;
if (this->InboundServerName != "")
{
quitserver = this->InboundServerName;
}
TreeServer* s = Utils->FindServer(quitserver);
if (s)
{
Squit(s,"Remote host closed the connection");
}
if (quitserver != "")
this->Instance->SNO->WriteToSnoMask('l',"Connection to '\2%s\2' failed.",quitserver.c_str());
}
int TreeSocket::OnIncomingConnection(int newsock, char* ip)
{
/* To prevent anyone from attempting to flood opers/DDoS by connecting to the server port,
* or discovering if this port is the server port, we don't allow connections from any
* IPs for which we don't have a link block.
*/
bool found = false;
found = (std::find(Utils->ValidIPs.begin(), Utils->ValidIPs.end(), ip) != Utils->ValidIPs.end());
if (!found)
{
for (vector::iterator i = Utils->ValidIPs.begin(); i != Utils->ValidIPs.end(); i++)
if (irc::sockets::MatchCIDR(ip, (*i).c_str()))
found = true;
if (!found)
{
this->Instance->SNO->WriteToSnoMask('l',"Server connection from %s denied (no link blocks with that IP address)", ip);
close(newsock);
return false;
}
}
TreeSocket* s = new TreeSocket(this->Utils, this->Instance, newsock, ip, this->Hook);
s = s; /* Whinge whinge whinge, thats all GCC ever does. */
return true;
}