Store a cert->account map and use it for SASL EXTERNAL and certfp auth

include/modules/ns_cert.h

@@ -60,3 +60,12 @@ struct NSCertList
 
 	virtual void Check() = 0;
 };
+
+class CertService : public Service
+{
+ public:
+	CertService(Module *c) : Service(c, "CertService", "certs") { }
+
+	virtual NickCore* FindAccountFromCert(const Anope::string &cert) = 0;
+};
+

modules/commands/ns_cert.cpp

@@ -12,6 +12,21 @@
 #include "module.h"
 #include "modules/ns_cert.h"
 
+static Anope::hash_map<NickCore *> certmap;
+
+struct CertServiceImpl : CertService
+{
+	CertServiceImpl(Module *o) : CertService(o) { }
+
+	NickCore* FindAccountFromCert(const Anope::string &cert) anope_override
+	{
+		Anope::hash_map<NickCore *>::iterator it = certmap.find(cert);
+		if (it != certmap.end())
+			return it->second;
+		return NULL;
+	}
+};
+
 struct NSCertListImpl : NSCertList
 {
 	Serialize::Reference<NickCore> nc;
@@ -20,6 +35,11 @@ struct NSCertListImpl : NSCertList
  public:
  	NSCertListImpl(Extensible *obj) : nc(anope_dynamic_static_cast<NickCore *>(obj)) { }
 
+	~NSCertListImpl()
+	{
+		ClearCert();
+	}
+
 	/** Add an entry to the nick's certificate list
 	 *
 	 * @param entry The fingerprint to add to the cert list
@@ -29,6 +49,7 @@ struct NSCertListImpl : NSCertList
 	void AddCert(const Anope::string &entry) anope_override
 	{
 		this->certs.push_back(entry);
+		certmap[entry] = nc;
 		FOREACH_MOD(OnNickAddCert, (this->nc, entry));
 	}
 
@@ -75,6 +96,7 @@ struct NSCertListImpl : NSCertList
 		if (it != this->certs.end())
 		{
 			FOREACH_MOD(OnNickEraseCert, (this->nc, entry));
+			certmap.erase(entry);
 			this->certs.erase(it);
 		}
 	}
@@ -86,6 +108,8 @@ struct NSCertListImpl : NSCertList
 	void ClearCert() anope_override
 	{
 		FOREACH_MOD(OnNickClearCert, (this->nc));
+		for (unsigned i = 0; i < certs.size(); ++i)
+			certmap.erase(certs[i]);
 		this->certs.clear();
 	}
 
@@ -124,9 +148,12 @@ struct NSCertListImpl : NSCertList
 			Anope::string buf;
 			data["cert"] >> buf;
 			spacesepstream sep(buf);
-			c->certs.clear();
+			c->ClearCert();
 			while (sep.GetToken(buf))
+			{
 				c->certs.push_back(buf);
+				certmap[buf] = n;
+			}
 		}
 	};
 };
@@ -308,10 +335,11 @@ class NSCert : public Module
 {
 	CommandNSCert commandnscert;
 	NSCertListImpl::ExtensibleItem certs;
+	CertServiceImpl cs;
 
  public:
 	NSCert(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, VENDOR),
-		commandnscert(this), certs(this, "certificates")
+		commandnscert(this), certs(this, "certificates"), cs(this)
 	{
 		if (!IRCD || !IRCD->CanCertFP)
 			throw ModuleException("Your IRCd does not support ssl client certificates");
@@ -319,22 +347,22 @@ class NSCert : public Module
 
 	void OnFingerprint(User *u) anope_override
 	{
-		NickAlias *na = NickAlias::Find(u->nick);
 		BotInfo *NickServ = Config->GetClient("NickServ");
-		if (!NickServ || !na)
-			return;
-		if (u->IsIdentified() && u->Account() == na->nc)
-			return;
-		if (na->nc->HasExt("NS_SUSPENDED"))
+		if (!NickServ || u->IsIdentified())
 			return;
 
-		NSCertList *cl = certs.Get(na->nc);
-		if (!cl || !cl->FindCert(u->fingerprint))
+		NickCore *nc = cs.FindAccountFromCert(u->fingerprint);
+		if (!nc || nc->HasExt("NS_SUSPENDED"))
 			return;
 
-		u->Identify(na);
-		u->SendMessage(NickServ, _("SSL certificate fingerprint accepted, you are now identified."));
-		Log(NickServ) << u->GetMask() << " automatically identified for account " << na->nc->display << " via SSL certificate fingerprint";
+		NickAlias *na = NickAlias::Find(u->nick);
+		if (na && na->nc == nc)
+			u->Identify(na);
+		else
+			u->Login(nc);
+
+		u->SendMessage(NickServ, _("SSL certificate fingerprint accepted, you are now identified to \2%s\2."), nc->display.c_str());
+		Log(NickServ) << u->GetMask() << " automatically identified for account " << nc->display << " via SSL certificate fingerprint";
 	}
 
 	EventReturn OnNickValidate(User *u, NickAlias *na) anope_override

modules/m_sasl.cpp

@@ -52,6 +52,8 @@ class Plain : public Mechanism
 
 class External : public Mechanism
 {
+	ServiceReference<CertService> certs;
+
 	struct Session : SASL::Session
 	{
 		Anope::string cert;
@@ -60,7 +62,7 @@ class External : public Mechanism
 	};
 
  public:
-	External(Module *o) : Mechanism(o, "EXTERNAL")
+	External(Module *o) : Mechanism(o, "EXTERNAL"), certs("CertService", "certs")
 	{
 		if (!IRCD || !IRCD->CanCertFP)
 			throw ModuleException("No CertFP");
@@ -83,26 +85,22 @@ class External : public Mechanism
 		}
 		else if (m.type == "C")
 		{
-			Anope::string account;
-			Anope::B64Decode(m.data, account);
-
-			NickAlias *na = NickAlias::Find(account);
-			if (!na)
+			if (!certs)
 			{
 				sasl->Fail(sess);
 				delete sess;
 				return;
 			}
 
-			NSCertList *cl = na->nc->GetExt<NSCertList>("certificates");
-			if (cl == NULL || !cl->FindCert(mysess->cert))
+			NickCore *nc = certs->FindAccountFromCert(mysess->cert);
+			if (!nc)
 			{
 				sasl->Fail(sess);
 				delete sess;
 				return;
 			}
 
-			sasl->Succeed(sess, na->nc);
+			sasl->Succeed(sess, nc);
 			delete sess;
 		}
 	}