#include <vector>
#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
#include "inspircd_config.h"
#include "configreader.h"
#include "users.h"
#include "channels.h"
#include "modules.h"
-#include "helperfuncs.h"
+
#include "socket.h"
#include "hashcomp.h"
#include "inspircd.h"
+#include "ssl_cert.h"
+
/* $ModDesc: Provides SSL support for clients */
/* $CompileFlags: `libgnutls-config --cflags` */
/* $LinkerFlags: `libgnutls-config --libs` `perl ../gnutls_rpath.pl` */
-extern InspIRCd* ServerInstance;
+
enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
return false;
}
+/** Represents an SSL user's extra data
+ */
class issl_session : public classbase
{
public:
class ModuleSSLGnuTLS : public Module
{
- Server* Srv;
+
ConfigReader* Conf;
char* dummy;
- CullList culllist;
+ CullList* culllist;
std::vector<int> listenports;
public:
- ModuleSSLGnuTLS(Server* Me)
+ ModuleSSLGnuTLS(InspIRCd* Me)
: Module::Module(Me)
{
- Srv = Me;
+
+
+ culllist = new CullList(ServerInstance);
// Not rehashable...because I cba to reduce all the sizes of existing buffers.
inbufsize = ServerInstance->Config->NetBufferSize;
gnutls_global_init(); // This must be called once in the program
if(gnutls_certificate_allocate_credentials(&x509_cred) != 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to allocate certificate credentials");
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to allocate certificate credentials");
// Guessing return meaning
if(gnutls_dh_params_init(&dh_params) < 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters");
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters");
// Needs the flag as it ignores a plain /rehash
OnRehash("ssl");
if(param != "ssl")
return;
- Conf = new ConfigReader;
+ Conf = new ConfigReader(ServerInstance);
for(unsigned int i = 0; i < listenports.size(); i++)
{
// We keep a record of which ports we're listening on with SSL
listenports.push_back(port);
- log(DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %d", port);
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %d", port);
}
else
{
- log(DEFAULT, "m_ssl_gnutls.so: FAILED to enable SSL on port %d, maybe you have another ssl or similar module loaded?", port);
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: FAILED to enable SSL on port %d, maybe you have another ssl or similar module loaded?", port);
}
}
}
keyfile = confdir + keyfile;
if(gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 trust file: %s", cafile.c_str());
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 trust file: %s", cafile.c_str());
if(gnutls_certificate_set_x509_crl_file (x509_cred, crlfile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 CRL file: %s", crlfile.c_str());
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 CRL file: %s", crlfile.c_str());
// Guessing on the return value of this, manual doesn't say :|
if(gnutls_certificate_set_x509_key_file (x509_cred, certfile.c_str(), keyfile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 certificate and key files: %s and %s", certfile.c_str(), keyfile.c_str());
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 certificate and key files: %s and %s", certfile.c_str(), keyfile.c_str());
// This may be on a large (once a day or week) timer eventually.
GenerateDHParams();
// security requirements.
if(gnutls_dh_params_generate2(dh_params, dh_bits) < 0)
- log(DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits)", dh_bits);
+ ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits)", dh_bits);
}
virtual ~ModuleSSLGnuTLS()
gnutls_dh_params_deinit(dh_params);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
+ delete culllist;
}
virtual void OnCleanup(int target_type, void* item)
{
// User is using SSL, they're a local user, and they're using one of *our* SSL ports.
// Potentially there could be multiple SSL modules loaded at once on different ports.
- log(DEBUG, "m_ssl_gnutls.so: Adding user %s to cull list", user->nick);
- culllist.AddItem(user, "SSL module unloading");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Adding user %s to cull list", user->nick);
+ culllist->AddItem(user, "SSL module unloading");
+ }
+ if (user->GetExt("ssl_cert", dummy) && isin(user->GetPort(), listenports))
+ {
+ ssl_cert* tofree;
+ user->GetExt("ssl_cert", tofree);
+ delete tofree;
+ user->Shrink("ssl_cert");
}
}
}
if(mod == this)
{
// We're being unloaded, kill all the users added to the cull list in OnCleanup
- int numusers = culllist.Apply();
- log(DEBUG, "m_ssl_gnutls.so: Killed %d users for unload of GnuTLS SSL module", numusers);
+ int numusers = culllist->Apply();
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Killed %d users for unload of GnuTLS SSL module", numusers);
for(unsigned int i = 0; i < listenports.size(); i++)
ServerInstance->Config->DelIOHook(listenports[i]);
virtual Version GetVersion()
{
- return Version(1, 0, 0, 0, VF_VENDOR);
+ return Version(1, 1, 0, 0, VF_VENDOR, API_VERSION);
}
void Implements(char* List)
{
List[I_OnRawSocketAccept] = List[I_OnRawSocketClose] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = List[I_OnCleanup] = 1;
- List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUnloadModule] = List[I_OnRehash] = List[I_OnWhois] = List[I_OnGlobalConnect] = 1;
+ List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUnloadModule] = List[I_OnRehash] = List[I_OnWhois] = List[I_OnPostConnect] = 1;
}
virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
*/
gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
-
+
Handshake(session);
}
virtual void OnRawSocketClose(int fd)
{
- log(DEBUG, "OnRawSocketClose: %d", fd);
+ ServerInstance->Log(DEBUG, "OnRawSocketClose: %d", fd);
CloseSession(&sessions[fd]);
+
+ EventHandler* user = ServerInstance->SE->GetRef(fd);
+
+ if ((user) && (user->GetExt("ssl_cert", dummy)))
+ {
+ ssl_cert* tofree;
+ user->GetExt("ssl_cert", tofree);
+ delete tofree;
+ user->Shrink("ssl_cert");
+ }
}
virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
{
issl_session* session = &sessions[fd];
- if(!session->sess)
+ if (!session->sess)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: No session to read from");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: No session to read from");
readresult = 0;
CloseSession(session);
return 1;
}
-
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead(%d, buffer, %u, %d)", fd, count, readresult);
-
- if(session->status == ISSL_HANDSHAKING_READ)
+
+ if (session->status == ISSL_HANDSHAKING_READ)
{
// The handshake isn't finished, try to finish it.
if(Handshake(session))
{
// Handshake successfully resumed.
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: successfully resumed handshake");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: successfully resumed handshake");
}
else
{
// Couldn't resume handshake.
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: failed to resume handshake");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: failed to resume handshake");
return -1;
}
}
- else if(session->status == ISSL_HANDSHAKING_WRITE)
+ else if (session->status == ISSL_HANDSHAKING_WRITE)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: handshake wants to write data but we are currently reading");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: handshake wants to write data but we are currently reading");
return -1;
}
// If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
- if(session->status == ISSL_HANDSHAKEN)
+ if (session->status == ISSL_HANDSHAKEN)
{
// Is this right? Not sure if the unencrypted data is garaunteed to be the same length.
// Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet.
- log(DEBUG, "m_ssl_gnutls.so: gnutls_record_recv(sess, inbuf+%d, %d-%d)", session->inbufoffset, inbufsize, session->inbufoffset);
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: gnutls_record_recv(sess, inbuf+%d, %d-%d)", session->inbufoffset, inbufsize, session->inbufoffset);
int ret = gnutls_record_recv(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
- if(ret == 0)
+ if (ret == 0)
{
// Client closed connection.
- log(DEBUG, "m_ssl_gnutls.so: Client closed the connection");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Client closed the connection");
readresult = 0;
CloseSession(session);
return 1;
}
- else if(ret < 0)
+ else if (ret < 0)
{
- if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
+ if (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Not all SSL data read: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Not all SSL data read: %s", gnutls_strerror(ret));
return -1;
}
else
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Error reading SSL data: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Error reading SSL data: %s", gnutls_strerror(ret));
readresult = 0;
CloseSession(session);
}
// 'buffer' is 'count' long
unsigned int length = ret + session->inbufoffset;
-
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Read %d bytes, now have %d waiting to be passed up", ret, length);
if(count <= length)
{
// As above
readresult = length;
}
-
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Passing %d bytes up to insp:", length);
- Srv->Log(DEBUG, std::string(buffer, readresult));
}
}
else if(session->status == ISSL_CLOSING)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: session closing...");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: session closing...");
readresult = 0;
}
if(!session->sess)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: No session to write to");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: No session to write to");
CloseSession(session);
return 1;
}
if(Handshake(session))
{
// Handshake successfully resumed.
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: successfully resumed handshake");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: successfully resumed handshake");
}
else
{
// Couldn't resume handshake.
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: failed to resume handshake");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: failed to resume handshake");
}
}
else if(session->status == ISSL_HANDSHAKING_READ)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: handshake wants to read data but we are currently writing");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: handshake wants to read data but we are currently writing");
}
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Adding %d bytes to the outgoing buffer", count);
session->outbuf.append(sendbuffer, count);
sendbuffer = session->outbuf.c_str();
count = session->outbuf.size();
if(session->status == ISSL_HANDSHAKEN)
- {
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Trying to write %d bytes:", count);
- Srv->Log(DEBUG, session->outbuf);
-
+ {
int ret = gnutls_record_send(session->sess, sendbuffer, count);
if(ret == 0)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Client closed the connection");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Client closed the connection");
CloseSession(session);
}
else if(ret < 0)
{
if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Not all SSL data written: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Not all SSL data written: %s", gnutls_strerror(ret));
}
else
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Error writing SSL data: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Error writing SSL data: %s", gnutls_strerror(ret));
CloseSession(session);
}
}
else
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Successfully wrote %d bytes", ret);
session->outbuf = session->outbuf.substr(ret);
}
}
else if(session->status == ISSL_CLOSING)
{
- log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: session closing...");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: session closing...");
}
return 1;
// Bugfix, only send this numeric for *our* SSL users
if(dest->GetExt("ssl", dummy) || (IS_LOCAL(dest) && isin(dest->GetPort(), listenports)))
{
- source->WriteServ("320 %s %s :is using a secure connection", source->nick, dest->nick);
+ ServerInstance->SendWhoisLine(source, 320, "%s %s :is using a secure connection", source->nick, dest->nick);
}
}
{
int ret = gnutls_handshake(session->sess);
- if(ret < 0)
+ if(ret < 0)
{
if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
{
{
// gnutls_handshake() wants to read() again.
session->status = ISSL_HANDSHAKING_READ;
- log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (reading) later, error string: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (reading) later, error string: %s", gnutls_strerror(ret));
}
else
{
// gnutls_handshake() wants to write() again.
session->status = ISSL_HANDSHAKING_WRITE;
- log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (writing) later, error string: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (writing) later, error string: %s", gnutls_strerror(ret));
MakePollWrite(session);
}
}
{
// Handshake failed.
CloseSession(session);
- log(DEBUG, "m_ssl_gnutls.so: Handshake failed, error string: %s", gnutls_strerror(ret));
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake failed, error string: %s", gnutls_strerror(ret));
session->status = ISSL_CLOSING;
}
else
{
// Handshake complete.
- log(DEBUG, "m_ssl_gnutls.so: Handshake completed");
+ ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake completed");
// This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
- userrec* extendme = Srv->FindDescriptor(session->fd);
+ userrec* extendme = ServerInstance->FindDescriptor(session->fd);
if (extendme)
{
if (!extendme->GetExt("ssl", dummy))
}
}
- virtual void OnGlobalConnect(userrec* user)
+ virtual void OnPostConnect(userrec* user)
{
// This occurs AFTER OnUserConnect so we can be sure the
// protocol module has propogated the NICK message.
metadata->push_back("ssl"); // The metadata id
metadata->push_back("ON"); // The value to send
Event* event = new Event((char*)metadata,(Module*)this,"send_metadata");
- event->Send(); // Trigger the event. We don't care what module picks it up.
+ event->Send(ServerInstance); // Trigger the event. We don't care what module picks it up.
DELETE(event);
DELETE(metadata);
+
+ VerifyCertificate(&sessions[user->GetFd()],user);
}
}
session->sess = NULL;
session->status = ISSL_NONE;
}
+
+ void VerifyCertificate(issl_session* session, userrec* user)
+ {
+ unsigned int status;
+ const gnutls_datum_t* cert_list;
+ int ret;
+ unsigned int cert_list_size;
+ gnutls_x509_crt_t cert;
+ char name[MAXBUF];
+ unsigned char digest[MAXBUF];
+ size_t digest_size = sizeof(digest);
+ size_t name_size = sizeof(name);
+ ssl_cert* certinfo = new ssl_cert;
+
+ user->Extend("ssl_cert",certinfo);
+
+ /* This verification function uses the trusted CAs in the credentials
+ * structure. So you must have installed one or more CA certificates.
+ */
+ ret = gnutls_certificate_verify_peers2(session->sess, &status);
+
+ if (ret < 0)
+ {
+ certinfo->data.insert(std::make_pair("error",std::string(gnutls_strerror(ret))));
+ return;
+ }
+
+ if (status & GNUTLS_CERT_INVALID)
+ {
+ certinfo->data.insert(std::make_pair("invalid",ConvToStr(1)));
+ }
+ else
+ {
+ certinfo->data.insert(std::make_pair("invalid",ConvToStr(0)));
+ }
+ if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
+ {
+ certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1)));
+ }
+ else
+ {
+ certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0)));
+ }
+ if (status & GNUTLS_CERT_REVOKED)
+ {
+ certinfo->data.insert(std::make_pair("revoked",ConvToStr(1)));
+ }
+ else
+ {
+ certinfo->data.insert(std::make_pair("revoked",ConvToStr(0)));
+ }
+ if (status & GNUTLS_CERT_SIGNER_NOT_CA)
+ {
+ certinfo->data.insert(std::make_pair("trusted",ConvToStr(0)));
+ }
+ else
+ {
+ certinfo->data.insert(std::make_pair("trusted",ConvToStr(1)));
+ }
+
+ /* Up to here the process is the same for X.509 certificates and
+ * OpenPGP keys. From now on X.509 certificates are assumed. This can
+ * be easily extended to work with openpgp keys as well.
+ */
+ if (gnutls_certificate_type_get(session->sess) != GNUTLS_CRT_X509)
+ {
+ certinfo->data.insert(std::make_pair("error","No X509 keys sent"));
+ return;
+ }
+
+ ret = gnutls_x509_crt_init(&cert);
+ if (ret < 0)
+ {
+ certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
+ return;
+ }
+
+ cert_list_size = 0;
+ cert_list = gnutls_certificate_get_peers(session->sess, &cert_list_size);
+ if (cert_list == NULL)
+ {
+ certinfo->data.insert(std::make_pair("error","No certificate was found"));
+ return;
+ }
+
+ /* This is not a real world example, since we only check the first
+ * certificate in the given chain.
+ */
+
+ ret = gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
+ if (ret < 0)
+ {
+ certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
+ return;
+ }
+
+ gnutls_x509_crt_get_dn(cert, name, &name_size);
+
+ certinfo->data.insert(std::make_pair("dn",name));
+
+ gnutls_x509_crt_get_issuer_dn(cert, name, &name_size);
+
+ certinfo->data.insert(std::make_pair("issuer",name));
+
+ if ((ret = gnutls_x509_crt_get_fingerprint(cert, GNUTLS_DIG_MD5, digest, &digest_size)) < 0)
+ {
+ certinfo->data.insert(std::make_pair("error",gnutls_strerror(ret)));
+ }
+ else
+ {
+ certinfo->data.insert(std::make_pair("fingerprint",irc::hex(digest, digest_size)));
+ user->WriteServ("NOTICE %s :*** Your SSL Certificate fingerprint is: %s", user->nick, irc::hex(digest, digest_size).c_str());
+ }
+
+ /* Beware here we do not check for errors.
+ */
+ if ((gnutls_x509_crt_get_expiration_time(cert) < time(0)) || (gnutls_x509_crt_get_activation_time(cert) > time(0)))
+ {
+ certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate"));
+ }
+
+ gnutls_x509_crt_deinit(cert);
+
+ return;
+ }
+
};
class ModuleSSLGnuTLSFactory : public ModuleFactory
{
}
- virtual Module * CreateModule(Server* Me)
+ virtual Module * CreateModule(InspIRCd* Me)
{
return new ModuleSSLGnuTLS(Me);
}
projects / user / henk / code / inspircd.git / blobdiff