#include "inspircd.h"
-#include "xline.h"
-#include "modules/dns.h"
+#include "modules/ssl.h"
+#include "modules/whois.h"
+
+enum
+{
+ // InspIRCd-specific.
+ RPL_WHOISGATEWAY = 350
+};
// We need this method up here so that it can be accessed from anywhere
static void ChangeIP(User* user, const std::string& newip)
{
ServerInstance->Users->RemoveCloneCounts(user);
- user->SetClientIP(newip.c_str());
+ user->SetClientIP(newip);
ServerInstance->Users->AddClone(user);
}
class WebIRCHost
{
private:
- const std::string hostmask;
- const std::string password;
- const std::string passhash;
+ std::string hostmask;
+ std::string fingerprint;
+ std::string password;
+ std::string passhash;
public:
- WebIRCHost(const std::string& mask, const std::string& pass, const std::string& hash)
+ WebIRCHost(const std::string& mask, const std::string& fp, const std::string& pass, const std::string& hash)
: hostmask(mask)
+ , fingerprint(fp)
, password(pass)
, passhash(hash)
{
bool Matches(LocalUser* user, const std::string& pass) const
{
// Did the user send a valid password?
- if (!ServerInstance->PassCompare(user, password, pass, passhash))
+ 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)
return false;
// Does the user's hostname match our hostmask?
- if (InspIRCd::Match(user->host, hostmask, ascii_case_insensitive_map))
+ if (InspIRCd::Match(user->GetRealHost(), hostmask, ascii_case_insensitive_map))
return true;
// Does the user's IP address match our hostmask?
this->syntax = "password gateway hostname ip";
}
- CmdResult HandleLocal(const std::vector<std::string>& parameters, LocalUser* user) CXX11_OVERRIDE
+ CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE
{
if (user->registered == REG_ALL)
return CMD_FAILURE;
if (!irc::sockets::aptosa(parameters[3], 0, ipaddr))
{
user->CommandFloodPenalty += 5000;
- ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s tried to use WEBIRC but gave an invalid IP address.", user->GetFullRealHost().c_str());
+ 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;
}
- // If the hostname is malformed then we use the IP address instead.
- bool host_ok = (parameters[2].length() <= ServerInstance->Config->Limits.MaxHost) && (parameters[2].find_first_not_of("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-") == std::string::npos);
- const std::string& newhost = (host_ok ? parameters[2] : parameters[3]);
-
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.
// The user matched a WebIRC block!
gateway.set(user, parameters[1]);
- realhost.set(user, user->host);
+ realhost.set(user, user->GetRealHost());
realip.set(user, user->GetIPString());
- if (notify)
- ServerInstance->SNO->WriteGlobalSno('w', "Connecting user %s is using a WebIRC gateway; changing their IP/host from %s/%s to %s/%s.",
- user->nick.c_str(), user->GetIPString().c_str(), user->host.c_str(), parameters[3].c_str(), newhost.c_str());
+ 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());
- // Set the IP address and hostname sent via WEBIRC.
+ // 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, parameters[3]);
- user->host = user->dhost = newhost;
- user->InvalidateCache();
return CMD_SUCCESS;
}
user->CommandFloodPenalty += 5000;
- ServerInstance->SNO->WriteGlobalSno('w', "Connecting user %s tried to use WEBIRC but didn't match any configured WebIRC hosts.", user->GetFullRealHost().c_str());
+ 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());
return CMD_FAILURE;
}
-};
-
-/** Resolver for CGI:IRC hostnames encoded in ident/GECOS
- */
-class CGIResolver : public DNS::Request
-{
- std::string theiruid;
- LocalIntExt& waiting;
- bool notify;
- public:
- CGIResolver(DNS::Manager* mgr, Module* me, bool NotifyOpers, const std::string &source, LocalUser* u, LocalIntExt& ext)
- : DNS::Request(mgr, me, source, DNS::QUERY_PTR)
- , theiruid(u->uuid)
- , waiting(ext)
- , notify(NotifyOpers)
+ void WriteLog(const char* message, ...) CUSTOM_PRINTF(2, 3)
{
- }
+ std::string buffer;
+ VAFORMAT(buffer, message, message);
- void OnLookupComplete(const DNS::Query *r) CXX11_OVERRIDE
- {
- /* Check the user still exists */
- User* them = ServerInstance->FindUUID(theiruid);
- if ((them) && (!them->quitting))
- {
- LocalUser* lu = IS_LOCAL(them);
- if (!lu)
- return;
-
- const DNS::ResourceRecord &ans_record = r->answers[0];
- if (ans_record.rdata.empty() || ans_record.rdata.length() > ServerInstance->Config->Limits.MaxHost)
- return;
-
- if (notify)
- ServerInstance->SNO->WriteGlobalSno('w', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s", them->nick.c_str(), them->host.c_str(), ans_record.rdata.c_str());
-
- them->host = them->dhost = ans_record.rdata;
- them->InvalidateCache();
- lu->CheckLines(true);
- }
- }
-
- void OnError(const DNS::Query *r) CXX11_OVERRIDE
- {
- if (!notify)
- return;
-
- User* them = ServerInstance->FindUUID(theiruid);
- if ((them) && (!them->quitting))
- {
- ServerInstance->SNO->WriteToSnoMask('w', "Connecting user %s detected as using CGI:IRC (%s), but their host can't be resolved!", them->nick.c_str(), them->host.c_str());
- }
- }
-
- ~CGIResolver()
- {
- User* them = ServerInstance->FindUUID(theiruid);
- if (!them)
- return;
- int count = waiting.get(them);
- if (count)
- waiting.set(them, count - 1);
+ // If we are sending a snotice then the message will already be
+ // written to the logfile.
+ if (notify)
+ ServerInstance->SNO->WriteGlobalSno('w', buffer);
+ else
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, buffer);
}
};
-class ModuleCgiIRC : public Module
+class ModuleCgiIRC : public Module, public Whois::EventListener
{
CommandWebIRC cmd;
- LocalIntExt waiting;
- dynamic_reference<DNS::Manager> DNS;
std::vector<std::string> hosts;
static void RecheckClass(LocalUser* user)
void HandleIdent(LocalUser* user, const std::string& newip)
{
- cmd.realhost.set(user, user->host);
+ cmd.realhost.set(user, user->GetRealHost());
cmd.realip.set(user, user->GetIPString());
+
+ cmd.WriteLog("Connecting user %s is using an ident gateway; changing their IP from %s to %s.",
+ user->uuid.c_str(), user->GetIPString().c_str(), newip.c_str());
ChangeIP(user, newip);
- user->host = user->dhost = user->GetIPString();
- user->InvalidateCache();
RecheckClass(user);
-
- // Don't create the resolver if the core couldn't put the user in a connect class or when dns is disabled
- if (user->quitting || !DNS || !user->MyClass->resolvehostnames)
- return;
-
- CGIResolver* r = new CGIResolver(*this->DNS, this, cmd.notify, newip, user, waiting);
- try
- {
- waiting.set(user, waiting.get(user) + 1);
- this->DNS->Process(r);
- }
- catch (DNS::Exception &ex)
- {
- int count = waiting.get(user);
- if (count)
- waiting.set(user, count - 1);
- delete r;
- if (cmd.notify)
- ServerInstance->SNO->WriteToSnoMask('w', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname; %s", user->nick.c_str(), user->host.c_str(), ex.GetReason().c_str());
- }
}
public:
ModuleCgiIRC()
- : cmd(this)
- , waiting("cgiirc-delay", ExtensionItem::EXT_USER, this)
- , DNS(this, "DNS")
+ : Whois::EventListener(this)
+ , cmd(this)
{
}
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");
// WebIRC blocks require a password.
- if (password.empty())
- throw ModuleException("When using <cgihost type=\"webirc\"> the password field is required, at " + tag->getTagLocation());
+ 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, password, tag->getString("hash")));
+ webirchosts.push_back(WebIRCHost(mask, fingerprint, password, tag->getString("hash")));
}
else
{
hosts.swap(identhosts);
cmd.hosts.swap(webirchosts);
- // Do we send an oper notice when a m_cgiirc client has their IP/host changed?
+ // Do we send an oper notice when a m_cgiirc client has their IP changed?
cmd.notify = ServerInstance->Config->ConfValue("cgiirc")->getBool("opernotice", true);
}
ModResult OnCheckReady(LocalUser *user) CXX11_OVERRIDE
{
- if (waiting.get(user))
- return MOD_RES_DENY;
-
if (!cmd.realip.get(user))
return MOD_RES_PASSTHRU;
{
for (std::vector<std::string>::const_iterator iter = hosts.begin(); iter != hosts.end(); ++iter)
{
- if (!InspIRCd::Match(user->host, *iter, ascii_case_insensitive_map) && !InspIRCd::MatchCIDR(user->GetIPString(), *iter, ascii_case_insensitive_map))
+ if (!InspIRCd::Match(user->GetRealHost(), *iter, ascii_case_insensitive_map) && !InspIRCd::MatchCIDR(user->GetIPString(), *iter, ascii_case_insensitive_map))
continue;
CheckIdent(user); // Nothing on failure.
return MOD_RES_PASSTHRU;
}
+ 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());
+ if (!realhost || !realip)
+ return;
+
+ const std::string* gateway = cmd.gateway.get(whois.GetTarget());
+ if (gateway)
+ whois.SendLine(RPL_WHOISGATEWAY, *realhost, *realip, "is connected via the " + *gateway + " WebIRC gateway");
+ else
+ whois.SendLine(RPL_WHOISGATEWAY, *realhost, *realip, "is connected via an ident gateway");
+ }
+
bool CheckIdent(LocalUser* user)
{
const char* ident;
Version GetVersion() CXX11_OVERRIDE
{
- return Version("Change user's hosts connecting from known CGI:IRC hosts",VF_VENDOR);
+ return Version("Enables forwarding the real IP address of a user from a gateway to the IRC server", VF_VENDOR);
}
};
projects / user / henk / code / inspircd.git / blobdiff