/*
* InspIRCd -- Internet Relay Chat Daemon
*
+ * Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ * Copyright (C) 2014 md_5 <git@md-5.net>
+ * Copyright (C) 2014 Googolplexed <googol@googolplexed.net>
+ * Copyright (C) 2013, 2017-2018, 2020-2021 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2013 Adam <Adam@anope.org>
+ * Copyright (C) 2012-2013, 2015 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
- * Copyright (C) 2007-2008 John Brooks <john.brooks@dereferenced.net>
- * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
- * Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
- * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
- * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
+ * Copyright (C) 2006-2007, 2010 Craig Edwards <brain@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
RPL_WHOISGATEWAY = 350
};
-// We need this method up here so that it can be accessed from anywhere
-static void ChangeIP(LocalUser* user, const irc::sockets::sockaddrs& sa)
-{
- // Set the users IP address and make sure they are in the right clone pool.
- ServerInstance->Users->RemoveCloneCounts(user);
- user->SetClientIP(sa);
- ServerInstance->Users->AddClone(user);
- if (user->quitting)
- return;
-
- // Recheck the connect class.
- user->MyClass = NULL;
- user->SetClass();
- user->CheckClass();
- if (user->quitting)
- return;
-
- // Check if this user matches any XLines.
- user->CheckLines(true);
- if (user->quitting)
- return;
-}
+// One or more hostmask globs or CIDR ranges.
+typedef std::vector<std::string> MaskList;
// Encapsulates information about an ident host.
class IdentHost
{
private:
- std::string hostmask;
+ MaskList hostmasks;
std::string newident;
public:
- IdentHost(const std::string& mask, const std::string& ident)
- : hostmask(mask)
+ IdentHost(const MaskList& masks, const std::string& ident)
+ : hostmasks(masks)
, newident(ident)
{
}
bool Matches(LocalUser* user) const
{
- if (!InspIRCd::Match(user->GetRealHost(), hostmask, ascii_case_insensitive_map))
- return false;
+ for (MaskList::const_iterator iter = hostmasks.begin(); iter != hostmasks.end(); ++iter)
+ {
+ // Does the user's hostname match this hostmask?
+ if (InspIRCd::Match(user->GetRealHost(), *iter, ascii_case_insensitive_map))
+ return true;
+
+ // Does the user's IP address match this hostmask?
+ if (InspIRCd::MatchCIDR(user->GetIPString(), *iter, ascii_case_insensitive_map))
+ return true;
+ }
- return InspIRCd::MatchCIDR(user->GetIPString(), hostmask, ascii_case_insensitive_map);
+ // The user didn't match any hostmasks.
+ return false;
}
};
class WebIRCHost
{
private:
- std::string hostmask;
+ MaskList hostmasks;
std::string fingerprint;
std::string password;
std::string passhash;
public:
- WebIRCHost(const std::string& mask, const std::string& fp, const std::string& pass, const std::string& hash)
- : hostmask(mask)
+ WebIRCHost(const MaskList& masks, const std::string& fp, const std::string& pass, const std::string& hash)
+ : hostmasks(masks)
, fingerprint(fp)
, password(pass)
, passhash(hash)
{
}
- bool Matches(LocalUser* user, const std::string& pass) const
+ bool Matches(LocalUser* user, const std::string& pass, UserCertificateAPI& sslapi) const
{
// Did the user send a valid password?
if (!password.empty() && !ServerInstance->PassCompare(user, password, pass, passhash))
return false;
// Does the user have a valid fingerprint?
- const std::string fp = SSLClientCert::GetFingerprint(&user->eh);
- if (!fingerprint.empty() && fp != fingerprint)
+ const std::string fp = sslapi ? sslapi->GetFingerprint(user) : "";
+ if (!fingerprint.empty() && !InspIRCd::TimingSafeCompare(fp, fingerprint))
return false;
- // Does the user's hostname match our hostmask?
- if (InspIRCd::Match(user->GetRealHost(), hostmask, ascii_case_insensitive_map))
- return true;
+ for (MaskList::const_iterator iter = hostmasks.begin(); iter != hostmasks.end(); ++iter)
+ {
+ // Does the user's hostname match this hostmask?
+ if (InspIRCd::Match(user->GetRealHost(), *iter, ascii_case_insensitive_map))
+ return true;
+
+ // Does the user's IP address match this hostmask?
+ if (InspIRCd::MatchCIDR(user->GetIPString(), *iter, ascii_case_insensitive_map))
+ return true;
+ }
- // Does the user's IP address match our hostmask?
- return InspIRCd::MatchCIDR(user->GetIPString(), hostmask, ascii_case_insensitive_map);
+ // The user didn't match any hostmasks.
+ return false;
+ }
+};
+
+class CommandHexIP : public SplitCommand
+{
+ public:
+ CommandHexIP(Module* Creator)
+ : SplitCommand(Creator, "HEXIP", 1)
+ {
+ allow_empty_last_param = false;
+ Penalty = 2;
+ syntax = "<hex-ip|raw-ip>";
+ }
+
+ CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE
+ {
+ irc::sockets::sockaddrs sa;
+ if (irc::sockets::aptosa(parameters[0], 0, sa))
+ {
+ if (sa.family() != AF_INET)
+ {
+ user->WriteNotice("*** HEXIP: You can only hex encode an IPv4 address!");
+ return CMD_FAILURE;
+ }
+
+ uint32_t addr = sa.in4.sin_addr.s_addr;
+ user->WriteNotice(InspIRCd::Format("*** HEXIP: %s encodes to %02x%02x%02x%02x.",
+ sa.addr().c_str(), (addr & 0xFF), ((addr >> 8) & 0xFF), ((addr >> 16) & 0xFF),
+ ((addr >> 24) & 0xFF)));
+ return CMD_SUCCESS;
+ }
+
+ if (ParseIP(parameters[0], sa))
+ {
+ user->WriteNotice(InspIRCd::Format("*** HEXIP: %s decodes to %s.",
+ parameters[0].c_str(), sa.addr().c_str()));
+ return CMD_SUCCESS;
+ }
+
+ user->WriteNotice(InspIRCd::Format("*** HEXIP: %s is not a valid raw or hex encoded IPv4 address.",
+ parameters[0].c_str()));
+ return CMD_FAILURE;
+ }
+
+ static bool ParseIP(const std::string& in, irc::sockets::sockaddrs& out)
+ {
+ const char* ident = NULL;
+ if (in.length() == 8)
+ {
+ // The ident is an IPv4 address encoded in hexadecimal with two characters
+ // per address segment.
+ ident = in.c_str();
+ }
+ else if (in.length() == 9 && in[0] == '~')
+ {
+ // The same as above but m_ident got to this user before we did. Strip the
+ // ident prefix and continue as normal.
+ ident = in.c_str() + 1;
+ }
+ else
+ {
+ // The user either does not have an IPv4 in their ident or the gateway server
+ // is also running an identd. In the latter case there isn't really a lot we
+ // can do so we just assume that the client in question is not connecting via
+ // an ident gateway.
+ return false;
+ }
+
+ // Try to convert the IP address to a string. If this fails then the user
+ // does not have an IPv4 address in their ident.
+ errno = 0;
+ unsigned long address = strtoul(ident, NULL, 16);
+ if (errno)
+ return false;
+
+ out.in4.sin_family = AF_INET;
+ out.in4.sin_addr.s_addr = htonl(address);
+ return true;
}
};
-/*
- * WEBIRC
- * This is used for the webirc method of CGIIRC auth, and is (really) the best way to do these things.
- * Syntax: WEBIRC password gateway hostname ip
- * Where password is a shared key, gateway is the name of the WebIRC gateway and version (e.g. cgiirc), hostname
- * is the resolved host of the client issuing the command and IP is the real IP of the client.
- *
- * How it works:
- * To tie in with the rest of cgiirc module, and to avoid race conditions, /webirc is only processed locally
- * and simply sets metadata on the user, which is later decoded on full connect to give something meaningful.
- */
class CommandWebIRC : public SplitCommand
{
public:
StringExtItem gateway;
StringExtItem realhost;
StringExtItem realip;
+ UserCertificateAPI sslapi;
Events::ModuleEventProvider webircevprov;
CommandWebIRC(Module* Creator)
, gateway("cgiirc_gateway", ExtensionItem::EXT_USER, Creator)
, realhost("cgiirc_realhost", ExtensionItem::EXT_USER, Creator)
, realip("cgiirc_realip", ExtensionItem::EXT_USER, Creator)
+ , sslapi(Creator)
, webircevprov(Creator, "event/webirc")
{
allow_empty_last_param = false;
works_before_reg = true;
- this->syntax = "<password> <gateway> <hostname> <ip> [flags]";
+ this->syntax = "<password> <gateway> <hostname> <ip> [<flags>]";
}
CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE
if (user->registered == REG_ALL || realhost.get(user))
return CMD_FAILURE;
- irc::sockets::sockaddrs ipaddr;
- if (!irc::sockets::aptosa(parameters[3], user->client_sa.port(), ipaddr))
- {
- user->CommandFloodPenalty += 5000;
- WriteLog("Connecting user %s (%s) tried to use WEBIRC but gave an invalid IP address.",
- user->uuid.c_str(), user->GetIPString().c_str());
- return CMD_FAILURE;
- }
-
for (std::vector<WebIRCHost>::const_iterator iter = hosts.begin(); iter != hosts.end(); ++iter)
{
// If we don't match the host then skip to the next host.
- if (!iter->Matches(user, parameters[0]))
+ if (!iter->Matches(user, parameters[0], sslapi))
continue;
+ irc::sockets::sockaddrs ipaddr;
+ if (!irc::sockets::aptosa(parameters[3], user->client_sa.port(), ipaddr))
+ {
+ WriteLog("Connecting user %s (%s) tried to use WEBIRC but gave an invalid IP address.",
+ user->uuid.c_str(), user->GetIPString().c_str());
+ ServerInstance->Users->QuitUser(user, "WEBIRC: IP address is invalid: " + parameters[3]);
+ return CMD_FAILURE;
+ }
+
// The user matched a WebIRC block!
gateway.set(user, parameters[1]);
realhost.set(user, user->GetRealHost());
realip.set(user, user->GetIPString());
- WriteLog("Connecting user %s is using a WebIRC gateway; changing their IP from %s to %s.",
- user->uuid.c_str(), user->GetIPString().c_str(), parameters[3].c_str());
+ WriteLog("Connecting user %s is using the %s WebIRC gateway; changing their IP from %s to %s.",
+ user->uuid.c_str(), parameters[1].c_str(),
+ user->GetIPString().c_str(), parameters[3].c_str());
// If we have custom flags then deal with them.
WebIRC::FlagMap flags;
// Set the IP address sent via WEBIRC. We ignore the hostname and lookup
// instead do our own DNS lookups because of unreliable gateways.
- ChangeIP(user, ipaddr);
+ user->SetClientIP(ipaddr);
return CMD_SUCCESS;
}
- user->CommandFloodPenalty += 5000;
WriteLog("Connecting user %s (%s) tried to use WEBIRC but didn't match any configured WebIRC hosts.",
user->uuid.c_str(), user->GetIPString().c_str());
+ ServerInstance->Users->QuitUser(user, "WEBIRC: you don't match any configured WebIRC hosts.");
return CMD_FAILURE;
}
, public Whois::EventListener
{
private:
- CommandWebIRC cmd;
+ CommandHexIP cmdhexip;
+ CommandWebIRC cmdwebirc;
std::vector<IdentHost> hosts;
- static bool ParseIdent(LocalUser* user, irc::sockets::sockaddrs& out)
- {
- const char* ident = NULL;
- if (user->ident.length() == 8)
- {
- // The ident is an IPv4 address encoded in hexadecimal with two characters
- // per address segment.
- ident = user->ident.c_str();
- }
- else if (user->ident.length() == 9 && user->ident[0] == '~')
- {
- // The same as above but m_ident got to this user before we did. Strip the
- // ident prefix and continue as normal.
- ident = user->ident.c_str() + 1;
- }
- else
- {
- // The user either does not have an IPv4 in their ident or the gateway server
- // is also running an identd. In the latter case there isn't really a lot we
- // can do so we just assume that the client in question is not connecting via
- // an ident gateway.
- return false;
- }
-
- // Try to convert the IP address to a string. If this fails then the user
- // does not have an IPv4 address in their ident.
- errno = 0;
- unsigned long address = strtoul(ident, NULL, 16);
- if (errno)
- return false;
-
- out.in4.sin_family = AF_INET;
- out.in4.sin_addr.s_addr = htonl(address);
- return true;
- }
-
public:
ModuleCgiIRC()
: WebIRC::EventListener(this)
, Whois::EventListener(this)
- , cmd(this)
+ , cmdhexip(this)
+ , cmdwebirc(this)
{
}
ServerInstance->SNO->EnableSnomask('w', "CGIIRC");
}
+ void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
+ {
+ tokens["EXTBAN"].push_back('w');
+ }
+
+ ModResult OnCheckBan(User* user, Channel*, const std::string& mask) CXX11_OVERRIDE
+ {
+ if (mask.length() <= 2 || mask[0] != 'w' || mask[1] != ':')
+ return MOD_RES_PASSTHRU;
+
+ const std::string* gateway = cmdwebirc.gateway.get(user);
+ if (!gateway)
+ return MOD_RES_PASSTHRU;
+
+ if (InspIRCd::Match(*gateway, mask.substr(2)))
+ return MOD_RES_DENY;
+
+ return MOD_RES_PASSTHRU;
+ }
+
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
std::vector<IdentHost> identhosts;
{
ConfigTag* tag = i->second;
+ MaskList masks;
+ irc::spacesepstream maskstream(tag->getString("mask"));
+ for (std::string mask; maskstream.GetToken(mask); )
+ masks.push_back(mask);
+
// Ensure that we have the <cgihost:mask> parameter.
- const std::string mask = tag->getString("mask");
- if (mask.empty())
+ if (masks.empty())
throw ModuleException("<cgihost:mask> is a mandatory field, at " + tag->getTagLocation());
// Determine what lookup type this host uses.
{
// The IP address should be looked up from the hex IP address.
const std::string newident = tag->getString("newident", "gateway", ServerInstance->IsIdent);
- identhosts.push_back(IdentHost(mask, newident));
+ identhosts.push_back(IdentHost(masks, newident));
}
else if (stdalgo::string::equalsci(type, "webirc"))
{
// The IP address will be received via the WEBIRC command.
const std::string fingerprint = tag->getString("fingerprint");
const std::string password = tag->getString("password");
+ const std::string passwordhash = tag->getString("hash", "plaintext", 1);
// WebIRC blocks require a password.
if (fingerprint.empty() && password.empty())
throw ModuleException("When using <cgihost type=\"webirc\"> either the fingerprint or password field is required, at " + tag->getTagLocation());
- webirchosts.push_back(WebIRCHost(mask, fingerprint, password, tag->getString("hash")));
+ if (!password.empty() && stdalgo::string::equalsci(passwordhash, "plaintext"))
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "<cgihost> tag at %s contains an plain text password, this is insecure!",
+ tag->getTagLocation().c_str());
+ }
+
+ webirchosts.push_back(WebIRCHost(masks, fingerprint, password, passwordhash));
}
else
{
- throw ModuleException(type + " is an invalid <cgihost:mask> type, at " + tag->getTagLocation());
+ throw ModuleException(type + " is an invalid <cgihost:mask> type, at " + tag->getTagLocation());
}
}
// The host configuration was valid so we can apply it.
hosts.swap(identhosts);
- cmd.hosts.swap(webirchosts);
+ cmdwebirc.hosts.swap(webirchosts);
// Do we send an oper notice when a m_cgiirc client has their IP changed?
- cmd.notify = ServerInstance->Config->ConfValue("cgiirc")->getBool("opernotice", true);
+ cmdwebirc.notify = ServerInstance->Config->ConfValue("cgiirc")->getBool("opernotice", true);
}
ModResult OnSetConnectClass(LocalUser* user, ConnectClass* myclass) CXX11_OVERRIDE
// If the user is not connecting via a WebIRC gateway then they
// cannot match this connect class.
- const std::string* gateway = cmd.gateway.get(user);
+ const std::string* gateway = cmdwebirc.gateway.get(user);
if (!gateway)
+ {
+ ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "The %s connect class is not suitable as it requires a connection via a WebIRC gateway",
+ myclass->GetName().c_str());
return MOD_RES_DENY;
+ }
// If the gateway matches the <connect:webirc> constraint then
// allow the check to continue. Otherwise, reject it.
- return InspIRCd::Match(*gateway, webirc) ? MOD_RES_PASSTHRU : MOD_RES_DENY;
+ if (!InspIRCd::Match(*gateway, webirc))
+ {
+ ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "The %s connect class is not suitable as the WebIRC gateway name (%s) does not match %s",
+ myclass->GetName().c_str(), gateway->c_str(), webirc.c_str());
+ return MOD_RES_DENY;
+ }
+
+ return MOD_RES_PASSTHRU;
}
ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
{
// There is no need to check for gateways if one is already being used.
- if (cmd.realhost.get(user))
+ if (cmdwebirc.realhost.get(user))
return MOD_RES_PASSTHRU;
for (std::vector<IdentHost>::const_iterator iter = hosts.begin(); iter != hosts.end(); ++iter)
// We have matched an <cgihost> block! Try to parse the encoded IPv4 address
// out of the ident.
irc::sockets::sockaddrs address(user->client_sa);
- if (!ParseIdent(user, address))
+ if (!CommandHexIP::ParseIP(user->ident, address))
return MOD_RES_PASSTHRU;
// Store the hostname and IP of the gateway for later use.
- cmd.realhost.set(user, user->GetRealHost());
- cmd.realip.set(user, user->GetIPString());
+ cmdwebirc.realhost.set(user, user->GetRealHost());
+ cmdwebirc.realip.set(user, user->GetIPString());
const std::string& newident = iter->GetIdent();
- cmd.WriteLog("Connecting user %s is using an ident gateway; changing their IP from %s to %s and their ident from %s to %s.",
+ cmdwebirc.WriteLog("Connecting user %s is using an ident gateway; changing their IP from %s to %s and their ident from %s to %s.",
user->uuid.c_str(), user->GetIPString().c_str(), address.addr().c_str(), user->ident.c_str(), newident.c_str());
user->ChangeIdent(newident);
- ChangeIP(user, address);
- break;
+ user->SetClientIP(address);
+ break;
}
return MOD_RES_PASSTHRU;
}
return;
WebIRC::FlagMap::const_iterator cport = flags->find("remote-port");
- if (cport == flags->end())
+ if (cport != flags->end())
{
// If we can't parse the port then just give up.
uint16_t port = ConvToNum<uint16_t>(cport->second);
}
WebIRC::FlagMap::const_iterator sport = flags->find("local-port");
- if (sport == flags->end())
+ if (sport != flags->end())
{
// If we can't parse the port then just give up.
uint16_t port = ConvToNum<uint16_t>(sport->second);
void OnWhois(Whois::Context& whois) CXX11_OVERRIDE
{
- if (!whois.IsSelfWhois() && !whois.GetSource()->HasPrivPermission("users/auspex"))
- return;
-
// If these fields are not set then the client is not using a gateway.
- const std::string* realhost = cmd.realhost.get(whois.GetTarget());
- const std::string* realip = cmd.realip.get(whois.GetTarget());
+ std::string* realhost = cmdwebirc.realhost.get(whois.GetTarget());
+ std::string* realip = cmdwebirc.realip.get(whois.GetTarget());
if (!realhost || !realip)
return;
- const std::string* gateway = cmd.gateway.get(whois.GetTarget());
+ // If the source doesn't have the right privs then only show the gateway name.
+ std::string hidden = "*";
+ if (!whois.GetSource()->HasPrivPermission("users/auspex"))
+ realhost = realip = &hidden;
+
+ const std::string* gateway = cmdwebirc.gateway.get(whois.GetTarget());
if (gateway)
whois.SendLine(RPL_WHOISGATEWAY, *realhost, *realip, "is connected via the " + *gateway + " WebIRC gateway");
else
Version GetVersion() CXX11_OVERRIDE
{
- return Version("Enables forwarding the real IP address of a user from a gateway to the IRC server", VF_VENDOR);
+ return Version("Adds the ability for IRC gateways to forward the real IP address of users connecting through them.", VF_VENDOR);
}
};
projects / user / henk / code / inspircd.git / blobdiff