return TRUE;
}
+ /* XXX For now, accept server keys without verification too. We are
+ currently always doing mutual authentication so the proof of posession
+ of the private key is verified, and if server is authenticated in
+ conn auth protocol with public key we MUST have the key already. */
+ return TRUE;
+ /* Rest is unreachable code! */
+
memset(filename, 0, sizeof(filename));
memset(file, 0, sizeof(file));
snprintf(file, sizeof(file) - 1, "serverkey_%s_%d.pub", sock->hostname,
/* Save the key for future checking */
unlink(filename);
- silc_pkcs_save_public_key_data(filename, pk, pk_len,
- SILC_PKCS_FILE_PEM);
+ silc_pkcs_save_public_key_data(filename, pk, pk_len, SILC_PKCS_FILE_PEM);
return TRUE;
}
- if (memcmp(encpk, pk, encpk_len)) {
+ if (memcmp(pk, encpk, encpk_len)) {
SILC_LOG_WARNING(("%s (%s) port %d server public key does not match "
"with local copy", sock->hostname, sock->ip,
sock->port));
/* Sets the negotiated key material into use for particular connection. */
-int silc_server_protocol_ke_set_keys(SilcSKE ske,
+int silc_server_protocol_ke_set_keys(SilcServer server,
+ SilcSKE ske,
SilcSocketConnection sock,
SilcSKEKeyMaterial *keymat,
SilcCipher cipher,
}
idata->rekey = silc_calloc(1, sizeof(*idata->rekey));
- idata->rekey->send_enc_key =
- silc_calloc(keymat->enc_key_len / 8,
- sizeof(*idata->rekey->send_enc_key));
- memcpy(idata->rekey->send_enc_key,
- keymat->send_enc_key, keymat->enc_key_len / 8);
+ idata->rekey->send_enc_key = silc_memdup(keymat->send_enc_key,
+ keymat->enc_key_len / 8);
idata->rekey->enc_key_len = keymat->enc_key_len / 8;
- if (ske->start_payload->flags & SILC_SKE_SP_FLAG_PFS)
+ if (ske->prop->flags & SILC_SKE_SP_FLAG_PFS)
idata->rekey->pfs = TRUE;
idata->rekey->ske_group = silc_ske_group_get_number(group);
/* Save the remote host's public key */
silc_pkcs_public_key_decode(ske->ke1_payload->pk_data,
ske->ke1_payload->pk_len, &idata->public_key);
+ if (ske->prop->flags & SILC_SKE_SP_FLAG_MUTUAL)
+ silc_hash_make(server->sha1hash, ske->ke1_payload->pk_data,
+ ske->ke1_payload->pk_len, idata->fingerprint);
sock->user_data = (void *)conn_data;
if (maj != maj2)
status = SILC_SKE_STATUS_BAD_VERSION;
+#if 0
if (min > min2)
status = SILC_SKE_STATUS_BAD_VERSION;
+#endif
/* XXX < 0.6 is not allowed */
if (maj == 0 && min < 5)
status = SILC_SKE_STATUS_BAD_VERSION;
+ /* XXX backward support for 0.6.1 */
+ if (maj == 0 && min == 6 && build < 2)
+ ske->backward_version = 1;
+
return status;
}
SilcSKE ske;
/* Allocate Key Exchange object */
- ske = silc_ske_alloc();
- ctx->ske = ske;
- ske->rng = server->rng;
+ ctx->ske = ske = silc_ske_alloc(server->rng, server);
silc_ske_set_callbacks(ske, silc_server_protocol_ke_send_packet, NULL,
silc_server_protocol_ke_verify_key,
properties packet from initiator. */
status = silc_ske_responder_start(ske, ctx->rng, ctx->sock,
silc_version_string,
- ctx->packet->buffer, FALSE);
+ ctx->packet->buffer, ctx->flags);
} else {
SilcSKEStartPayload *start_payload;
/* Assemble security properties. */
- silc_ske_assemble_security_properties(ske, SILC_SKE_SP_FLAG_NONE,
+ silc_ske_assemble_security_properties(ske, ctx->flags,
silc_version_string,
&start_payload);
*/
if (ctx->responder == TRUE) {
/* Sends the selected security properties to the initiator. */
- status = silc_ske_responder_phase_1(ctx->ske,
- ctx->ske->start_payload);
+ status = silc_ske_responder_phase_1(ctx->ske);
} else {
/* Call Phase-1 function. This processes the Key Exchange Start
paylaod reply we just got from the responder. The callback
Key Exhange 1 Payload to the responder. */
status = silc_ske_initiator_phase_2(ctx->ske,
server->public_key,
- server->private_key);
+ server->private_key,
+ SILC_SKE_PK_TYPE_SILC);
protocol->state++;
}
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* Call the final callback */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
*/
static int
-silc_server_password_authentication(SilcServer server, char *auth1,
- char *auth2)
+silc_server_password_authentication(SilcServer server, char *remote_auth,
+ char *local_auth)
{
- if (!auth1 || !auth2)
+ if (!remote_auth || !local_auth)
return FALSE;
- if (!memcmp(auth1, auth2, strlen(auth1)))
+ if (!memcmp(remote_auth, local_auth, strlen(local_auth)))
return TRUE;
return FALSE;
static int
silc_server_get_public_key_auth(SilcServer server,
- unsigned char *auth_data,
+ unsigned char **auth_data,
uint32 *auth_data_len,
SilcSKE ske)
{
ske->start_payload_copy->len),
SILC_STR_END);
+ *auth_data = silc_calloc(silc_pkcs_get_key_len(pkcs), sizeof(**auth_data));
if (silc_pkcs_sign_with_hash(pkcs, ske->prop->hash, auth->data,
- auth->len, auth_data, auth_data_len)) {
+ auth->len, *auth_data, auth_data_len)) {
silc_buffer_free(auth);
return TRUE;
}
+ silc_free(*auth_data);
silc_buffer_free(auth);
return FALSE;
}
+/* Function that actually performs the authentication to the remote. This
+ supports both passphrase and public key authentication. */
+
+static bool
+silc_server_get_authentication(SilcServerConnAuthInternalContext *ctx,
+ char *local_passphrase,
+ void *local_publickey,
+ unsigned char *remote_auth,
+ uint32 remote_auth_len)
+{
+ SilcServer server = (SilcServer)ctx->server;
+ SilcSKE ske = ctx->ske;
+ bool result = FALSE;
+
+ /* If we don't have authentication data set at all we do not require
+ authentication at all */
+ if (!local_passphrase && !local_publickey) {
+ SILC_LOG_DEBUG(("No authentication required"));
+ return TRUE;
+ }
+
+ /* If both passphrase and public key is provided then we'll try both of
+ them and see which one of them authenticates. If only one of them is
+ set, then try only that. */
+
+ /* Try first passphrase (as it is faster to check) */
+ if (local_passphrase) {
+ SILC_LOG_DEBUG(("Password authentication"));
+ result = silc_server_password_authentication(server, local_passphrase,
+ remote_auth);
+ }
+
+ /* Try public key authenetication */
+ if (!result && local_publickey) {
+ SILC_LOG_DEBUG(("Public key authentication"));
+ result = silc_server_public_key_authentication(server,
+ local_publickey,
+ remote_auth,
+ remote_auth_len,
+ ske);
+ }
+
+ return result;
+}
+
/* Performs connection authentication protocol. If responder, we
authenticate the remote data received. If initiator, we will send
authentication data to the remote end. */
/* Remote end is client */
if (conn_type == SILC_SOCKET_TYPE_CLIENT) {
- SilcServerConfigSectionClientConnection *client = ctx->cconfig;
+ SilcServerConfigClient *client = ctx->cconfig;
if (client) {
- switch(client->auth_meth) {
- case SILC_AUTH_NONE:
- /* No authentication required */
- SILC_LOG_DEBUG(("No authentication required"));
- break;
-
- case SILC_AUTH_PASSWORD:
- /* Password authentication */
- SILC_LOG_DEBUG(("Password authentication"));
- ret = silc_server_password_authentication(server, auth_data,
- client->auth_data);
-
- if (ret)
- break;
-
+ ret = silc_server_get_authentication(ctx, client->passphrase,
+ client->publickey,
+ auth_data, payload_len);
+ if (!ret) {
/* Authentication failed */
SILC_LOG_ERROR(("Authentication failed"));
SILC_LOG_DEBUG(("Authentication failed"));
silc_free(auth_data);
protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
- return;
- break;
-
- case SILC_AUTH_PUBLIC_KEY:
- /* Public key authentication */
- SILC_LOG_DEBUG(("Public key authentication"));
- ret = silc_server_public_key_authentication(server,
- client->auth_data,
- auth_data,
- payload_len,
- ctx->ske);
-
- if (ret)
- break;
-
- SILC_LOG_ERROR(("Authentication failed"));
- SILC_LOG_DEBUG(("Authentication failed"));
- silc_free(auth_data);
- protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
+ silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
}
} else {
- SILC_LOG_DEBUG(("No configuration for remote connection"));
- SILC_LOG_ERROR(("Remote connection not configured"));
+ SILC_LOG_DEBUG(("No configuration for remote client connection"));
+ SILC_LOG_ERROR(("Remote client connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
silc_free(auth_data);
protocol->state = SILC_PROTOCOL_STATE_ERROR;
/* Remote end is server */
if (conn_type == SILC_SOCKET_TYPE_SERVER) {
- SilcServerConfigSectionServerConnection *serv = ctx->sconfig;
+ SilcServerConfigServer *serv = ctx->sconfig;
if (serv) {
- switch(serv->auth_meth) {
- case SILC_AUTH_NONE:
- /* No authentication required */
- SILC_LOG_DEBUG(("No authentication required"));
- break;
-
- case SILC_AUTH_PASSWORD:
- /* Password authentication */
- SILC_LOG_DEBUG(("Password authentication"));
- ret = silc_server_password_authentication(server, auth_data,
- serv->auth_data);
-
- if (ret)
- break;
-
+ ret = silc_server_get_authentication(ctx, serv->passphrase,
+ serv->publickey,
+ auth_data, payload_len);
+ if (!ret) {
/* Authentication failed */
SILC_LOG_ERROR(("Authentication failed"));
SILC_LOG_DEBUG(("Authentication failed"));
silc_free(auth_data);
protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
- return;
- break;
-
- case SILC_AUTH_PUBLIC_KEY:
- /* Public key authentication */
- SILC_LOG_DEBUG(("Public key authentication"));
- ret = silc_server_public_key_authentication(server,
- serv->auth_data,
- auth_data,
- payload_len,
- ctx->ske);
-
- if (ret)
- break;
-
- SILC_LOG_ERROR(("Authentication failed"));
- SILC_LOG_DEBUG(("Authentication failed"));
- silc_free(auth_data);
- protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
+ silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
}
} else {
- SILC_LOG_DEBUG(("No configuration for remote connection"));
- SILC_LOG_ERROR(("Remote connection not configured"));
+ SILC_LOG_DEBUG(("No configuration for remote server connection"));
+ SILC_LOG_ERROR(("Remote server connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule,
/* Remote end is router */
if (conn_type == SILC_SOCKET_TYPE_ROUTER) {
- SilcServerConfigSectionServerConnection *serv = ctx->rconfig;
+ SilcServerConfigRouter *serv = ctx->rconfig;
if (serv) {
- switch(serv->auth_meth) {
- case SILC_AUTH_NONE:
- /* No authentication required */
- SILC_LOG_DEBUG(("No authentication required"));
- break;
-
- case SILC_AUTH_PASSWORD:
- /* Password authentication */
- SILC_LOG_DEBUG(("Password authentication"));
- ret = silc_server_password_authentication(server, auth_data,
- serv->auth_data);
-
- if (ret)
- break;
-
+ ret = silc_server_get_authentication(ctx, serv->passphrase,
+ serv->publickey,
+ auth_data, payload_len);
+ if (!ret) {
/* Authentication failed */
SILC_LOG_ERROR(("Authentication failed"));
SILC_LOG_DEBUG(("Authentication failed"));
silc_free(auth_data);
protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
- return;
- break;
-
- case SILC_AUTH_PUBLIC_KEY:
- /* Public key authentication */
- SILC_LOG_DEBUG(("Public key authentication"));
- ret = silc_server_public_key_authentication(server,
- serv->auth_data,
- auth_data,
- payload_len,
- ctx->ske);
-
- if (ret)
- break;
-
- SILC_LOG_ERROR(("Authentication failed"));
- SILC_LOG_DEBUG(("Authentication failed"));
- silc_free(auth_data);
- protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute(protocol, server->schedule,
- 0, 300000);
+ silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
}
} else {
- SILC_LOG_DEBUG(("No configuration for remote connection"));
- SILC_LOG_ERROR(("Remote connection not configured"));
+ SILC_LOG_DEBUG(("No configuration for remote router connection"));
+ SILC_LOG_ERROR(("Remote router connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
silc_free(auth_data);
protocol->state = SILC_PROTOCOL_STATE_ERROR;
case SILC_AUTH_PUBLIC_KEY:
{
- unsigned char sign[1024];
-
/* Public key authentication */
- silc_server_get_public_key_auth(server, sign, &auth_data_len,
+ silc_server_get_public_key_auth(server, &auth_data, &auth_data_len,
ctx->ske);
- auth_data = silc_calloc(auth_data_len, sizeof(*auth_data));
- memcpy(auth_data, sign, auth_data_len);
break;
}
}
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* Protocol has ended, call the final callback */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
if (ctx->timeout_task)
silc_schedule_task_del(server->schedule, ctx->timeout_task);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
if (!send) {
memset(idata->rekey->send_enc_key, 0, idata->rekey->enc_key_len);
silc_free(idata->rekey->send_enc_key);
- idata->rekey->send_enc_key =
- silc_calloc(keymat->enc_key_len / 8,
- sizeof(*idata->rekey->send_enc_key));
- memcpy(idata->rekey->send_enc_key, keymat->send_enc_key,
- keymat->enc_key_len / 8);
+ idata->rekey->send_enc_key = silc_memdup(keymat->send_enc_key,
+ keymat->enc_key_len / 8);
idata->rekey->enc_key_len = keymat->enc_key_len / 8;
}
}
return;
}
- ctx->ske = silc_ske_alloc();
- ctx->ske->rng = server->rng;
+ ctx->ske = silc_ske_alloc(server->rng, server);
ctx->ske->prop = silc_calloc(1, sizeof(*ctx->ske->prop));
- silc_ske_get_group_by_number(idata->rekey->ske_group,
+ silc_ske_group_get_by_number(idata->rekey->ske_group,
&ctx->ske->prop->group);
silc_ske_set_callbacks(ctx->ske,
* Use Perfect Forward Secrecy, ie. negotiate the key material
* using the SKE protocol.
*/
- ctx->ske = silc_ske_alloc();
- ctx->ske->rng = server->rng;
+ ctx->ske = silc_ske_alloc(server->rng, server);
ctx->ske->prop = silc_calloc(1, sizeof(*ctx->ske->prop));
- silc_ske_get_group_by_number(idata->rekey->ske_group,
+ silc_ske_group_get_by_number(idata->rekey->ske_group,
&ctx->ske->prop->group);
silc_ske_set_callbacks(ctx->ske,
NULL, NULL, NULL, silc_ske_check_version,
context);
- status = silc_ske_initiator_phase_2(ctx->ske, NULL, NULL);
+ status = silc_ske_initiator_phase_2(ctx->ske, NULL, NULL, 0);
if (status != SILC_SKE_STATUS_OK) {
SILC_LOG_WARNING(("Error (%s) during Re-key (PFS)",
silc_ske_map_status(status)));
encrypted with the new key so set the decryption key to the new key */
silc_server_protocol_rekey_generate(server, ctx, FALSE);
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* Protocol has ended, call the final callback */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
silc_ske_abort(ctx->ske, ctx->ske->status);
}
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
* We have received failure from remote
*/
+ /* Assure that after calling final callback there cannot be pending
+ executions for this protocol anymore. This just unregisters any
+ timeout callbacks for this protocol. */
+ silc_protocol_cancel(protocol, server->schedule);
+
/* On error the final callback is always called. */
if (protocol->final_callback)
silc_protocol_execute_final(protocol, server->schedule);
projects / silc.git / blobdiff