Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2001 Pekka Riikonen
+ Copyright (C) 1997 - 2002 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
static bool
silc_verify_public_key_internal(SilcServer server, SilcSocketConnection sock,
SilcSocketType conn_type,
- unsigned char *pk, uint32 pk_len,
+ unsigned char *pk, SilcUInt32 pk_len,
SilcSKEPKType pk_type)
{
char file[256], filename[256], *fingerprint;
/* The key already exists, verify it. */
SilcPublicKey public_key;
unsigned char *encpk;
- uint32 encpk_len;
+ SilcUInt32 encpk_len;
SILC_LOG_DEBUG(("We have the public key saved locally"));
static void
silc_server_protocol_ke_verify_key(SilcSKE ske,
unsigned char *pk_data,
- uint32 pk_len,
+ SilcUInt32 pk_len,
SilcSKEPKType pk_type,
void *context,
SilcSKEVerifyCbCompletion completion,
(SilcServerKEInternalContext *)protocol->context;
SilcServer server = (SilcServer)ctx->server;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Verifying received public key"));
- if (silc_verify_public_key_internal(server, ctx->sock,
- (ctx->responder == FALSE ?
- SILC_SOCKET_TYPE_ROUTER:
- ctx->sconfig ? SILC_SOCKET_TYPE_SERVER :
- ctx->rconfig ? SILC_SOCKET_TYPE_ROUTER :
- SILC_SOCKET_TYPE_CLIENT),
- pk_data, pk_len, pk_type))
+ if (silc_verify_public_key_internal(
+ server, ctx->sock,
+ (ctx->responder == FALSE ?
+ SILC_SOCKET_TYPE_ROUTER:
+ ctx->sconfig.ref_ptr ? SILC_SOCKET_TYPE_SERVER :
+ ctx->rconfig.ref_ptr ? SILC_SOCKET_TYPE_ROUTER :
+ SILC_SOCKET_TYPE_CLIENT),
+ pk_data, pk_len, pk_type))
completion(ske, SILC_SKE_STATUS_OK, completion_context);
else
completion(ske, SILC_SKE_STATUS_UNSUPPORTED_PUBLIC_KEY,
SilcUnknownEntry conn_data;
SilcIDListData idata;
- SILC_LOG_DEBUG(("Setting new key into use"));
+ SILC_LOG_DEBUG(("Setting new keys into use"));
conn_data = silc_calloc(1, sizeof(*conn_data));
idata = (SilcIDListData)conn_data;
/* Allocate cipher to be used in the communication */
if (!silc_cipher_alloc(cipher->cipher->name, &idata->send_key)) {
silc_free(conn_data);
+ SILC_LOG_ERROR(("Cannot allocate algorithm: %s", cipher->cipher->name));
return FALSE;
}
if (!silc_cipher_alloc(cipher->cipher->name, &idata->receive_key)) {
silc_free(conn_data);
+ SILC_LOG_ERROR(("Cannot allocate algorithm: %s", cipher->cipher->name));
return FALSE;
}
silc_cipher_free(idata->send_key);
silc_cipher_free(idata->receive_key);
silc_free(conn_data);
+ SILC_LOG_ERROR(("Cannot allocate algorithm: %s",
+ silc_hmac_get_name(hmac)));
return FALSE;
}
silc_cipher_free(idata->receive_key);
silc_hmac_free(idata->hmac_send);
silc_free(conn_data);
+ SILC_LOG_ERROR(("Cannot allocate algorithm: %s",
+ silc_hmac_get_name(hmac)));
return FALSE;
}
}
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 hash */
- if (!silc_hash_alloc(hash->hash->name, &idata->hash)) {
+ if (!silc_hash_alloc(silc_hash_get_name(hash), &idata->hash)) {
silc_cipher_free(idata->send_key);
silc_cipher_free(idata->receive_key);
silc_hmac_free(idata->hmac_send);
silc_hmac_free(idata->hmac_receive);
silc_free(conn_data);
+ SILC_LOG_ERROR(("Cannot allocate algorithm: %s",
+ silc_hash_get_name(hash)));
return FALSE;
}
sock->user_data = (void *)conn_data;
- SILC_LOG_INFO(("%s (%s) security properties: %s %s %s",
+ SILC_LOG_INFO(("%s (%s) security properties: %s %s %s %s",
sock->hostname, sock->ip,
idata->send_key->cipher->name,
(char *)silc_hmac_get_name(idata->hmac_send),
- idata->hash->hash->name));
+ silc_hash_get_name(idata->hash),
+ ske->prop->flags & SILC_SKE_SP_FLAG_PFS ? "PFS" : ""));
return TRUE;
}
/* Check remote host version string */
SilcSKEStatus silc_ske_check_version(SilcSKE ske, unsigned char *version,
- uint32 len, void *context)
+ SilcUInt32 len, void *context)
{
- SilcSKEStatus status = SILC_SKE_STATUS_OK;
- char *cp;
- int maj = 0, min = 0, build = 0, maj2 = 0, min2 = 0, build2 = 0;
+ SilcUInt32 l_protocol_version = 0, r_protocol_version = 0;
SILC_LOG_INFO(("%s (%s) is version %s", ske->sock->hostname,
ske->sock->ip, version));
- /* Check for initial version string */
- if (!strstr(version, "SILC-1.0-"))
- status = SILC_SKE_STATUS_BAD_VERSION;
-
- /* Check software version */
-
- cp = version + 9;
- if (!cp)
- status = SILC_SKE_STATUS_BAD_VERSION;
-
- maj = atoi(cp);
- cp = strchr(cp, '.');
- if (cp) {
- min = atoi(cp + 1);
- cp++;
- }
- if (cp) {
- cp = strchr(cp, '.');
- if (cp)
- build = atoi(cp + 1);
+ if (!silc_parse_version_string(version, &r_protocol_version, NULL, NULL,
+ NULL, NULL)) {
+ SILC_LOG_ERROR(("%s (%s) %s is not allowed/supported version",
+ ske->sock->hostname, ske->sock->ip, version));
+ return SILC_SKE_STATUS_BAD_VERSION;
}
- cp = silc_version_string + 9;
- if (!cp)
- status = SILC_SKE_STATUS_BAD_VERSION;
-
- maj2 = atoi(cp);
- cp = strchr(cp, '.');
- if (cp) {
- min2 = atoi(cp + 1);
- cp++;
- }
- if (cp) {
- cp = strchr(cp, '.');
- if (cp)
- build2 = atoi(cp + 1);
+ if (!silc_parse_version_string(silc_version_string,
+ &l_protocol_version, NULL, NULL,
+ NULL, NULL)) {
+ SILC_LOG_ERROR(("%s (%s) %s is not allowed/supported version",
+ ske->sock->hostname, ske->sock->ip, version));
+ return SILC_SKE_STATUS_BAD_VERSION;
}
- 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;
+ /* If remote is too new, don't connect */
+ if (l_protocol_version < r_protocol_version) {
+ SILC_LOG_ERROR(("%s (%s) %s is not allowed/supported version",
+ ske->sock->hostname, ske->sock->ip, version));
+ return SILC_SKE_STATUS_BAD_VERSION;
+ }
- /* XXX backward support for 0.6.1 */
- if (maj == 0 && min == 6 && build < 2)
- ske->backward_version = 1;
+ ske->sock->version = r_protocol_version;
- return status;
+ return SILC_SKE_STATUS_OK;
}
/* Callback that is called by the SKE to indicate that it is safe to
(SilcServerKEInternalContext *)protocol->context;
SilcServer server = (SilcServer)ctx->server;
- SILC_LOG_DEBUG(("Start"));
-
if (ske->status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Key Exchange protocol",
- silc_ske_map_status(ske->status)));
- SILC_LOG_DEBUG(("Error (%s) during Key Exchange protocol",
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol",
silc_ske_map_status(ske->status)));
-
+
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
/* Send Ok to the other end. We will end the protocol as responder
sends Ok to us when we will take the new keys into use. */
if (ctx->responder == FALSE) {
+ SILC_LOG_DEBUG(("Ending key exchange protocol"));
silc_ske_end(ctx->ske);
/* End the protocol on the next round */
SilcServer server = (SilcServer)ctx->server;
SilcSKEStatus status = SILC_SKE_STATUS_OK;
- SILC_LOG_DEBUG(("Start"));
-
if (protocol->state == SILC_PROTOCOL_STATE_UNKNOWN)
protocol->state = SILC_PROTOCOL_STATE_START;
- SILC_LOG_DEBUG(("State=%d", protocol->state));
+ SILC_LOG_DEBUG(("Current protocol state %d", protocol->state));
switch(protocol->state) {
case SILC_PROTOCOL_STATE_START:
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,
if (ctx->responder == TRUE) {
/* Start the key exchange by processing the received security
properties packet from initiator. */
+ SILC_LOG_DEBUG(("Process security property list (KE)"));
status = silc_ske_responder_start(ske, ctx->rng, ctx->sock,
silc_version_string,
- ctx->packet->buffer, TRUE);
+ ctx->packet->buffer, ctx->flags);
} else {
SilcSKEStartPayload *start_payload;
+ SILC_LOG_DEBUG(("Send security property list (KE)"));
+
/* Assemble security properties. */
- silc_ske_assemble_security_properties(ske, SILC_SKE_SP_FLAG_MUTUAL,
+ silc_ske_assemble_security_properties(ske, ctx->flags,
silc_version_string,
&start_payload);
return;
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Key Exchange protocol",
- silc_ske_map_status(status)));
- SILC_LOG_DEBUG(("Error (%s) during Key Exchange protocol",
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol",
silc_ske_map_status(status)));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
*/
if (ctx->responder == TRUE) {
/* Sends the selected security properties to the initiator. */
- status = silc_ske_responder_phase_1(ctx->ske,
- ctx->ske->start_payload);
+ SILC_LOG_DEBUG(("Send security property list reply (KE)"));
+ 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
function will receive the processed payload where we will
save it. */
+ SILC_LOG_DEBUG(("Process security property list reply (KE)"));
status = silc_ske_initiator_phase_1(ctx->ske, ctx->packet->buffer);
}
return;
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Key Exchange protocol",
- silc_ske_map_status(status)));
- SILC_LOG_DEBUG(("Error (%s) during Key Exchange protocol",
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol",
silc_ske_map_status(status)));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
the initiator. This also creates our parts of the Diffie
Hellman algorithm. The silc_server_protocol_ke_continue
will be called after the public key has been verified. */
+ SILC_LOG_DEBUG(("Process KE1 packet"));
status = silc_ske_responder_phase_2(ctx->ske, ctx->packet->buffer);
} else {
/* Call the Phase-2 function. This creates Diffie Hellman
key exchange parameters and sends our public part inside
Key Exhange 1 Payload to the responder. */
+ SILC_LOG_DEBUG(("Send KE1 packet"));
status = silc_ske_initiator_phase_2(ctx->ske,
server->public_key,
- server->private_key);
+ server->private_key,
+ SILC_SKE_PK_TYPE_SILC);
protocol->state++;
}
return;
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Key Exchange protocol",
- silc_ske_map_status(status)));
- SILC_LOG_DEBUG(("Error (%s) during Key Exchange protocol",
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol",
silc_ske_map_status(status)));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
if (ctx->responder == TRUE) {
/* This creates the key exchange material and sends our
public parts to the initiator inside Key Exchange 2 Payload. */
+ SILC_LOG_DEBUG(("Process KE2 packet"));
status = silc_ske_responder_finish(ctx->ske,
server->public_key,
server->private_key,
/* Finish the protocol. This verifies the Key Exchange 2 payload
sent by responder. The silc_server_protocol_ke_continue will
be called after the public key has been verified. */
+ SILC_LOG_DEBUG(("Send KE2 packet"));
status = silc_ske_initiator_finish(ctx->ske, ctx->packet->buffer);
}
return;
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Key Exchange protocol",
- silc_ske_map_status(status)));
- SILC_LOG_DEBUG(("Error (%s) during Key Exchange protocol",
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol",
silc_ske_map_status(status)));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
*/
SilcSKEKeyMaterial *keymat;
int key_len = silc_cipher_get_key_len(ctx->ske->prop->cipher);
- int hash_len = ctx->ske->prop->hash->hash->hash_len;
+ int hash_len = silc_hash_len(ctx->ske->prop->hash);
+
+ SILC_LOG_DEBUG(("Process computed key material"));
/* Process the key material */
keymat = silc_calloc(1, sizeof(*keymat));
status = silc_ske_process_key_material(ctx->ske, 16, key_len, hash_len,
keymat);
if (status != SILC_SKE_STATUS_OK) {
+ SILC_LOG_ERROR(("Error during Key Exchange protocol: "
+ "could not process key material"));
+
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
silc_ske_free_key_material(keymat);
/* Send Ok to the other end if we are responder. If we are initiator
we have sent this already. */
- if (ctx->responder == TRUE)
+ if (ctx->responder == TRUE) {
+ SILC_LOG_DEBUG(("Ending key exchange protocol"));
silc_ske_end(ctx->ske);
+ }
/* Unregister the timeout task since the protocol has ended.
This was the timeout task to be executed if the protocol is
*/
static int
-silc_server_password_authentication(SilcServer server, char *remote_auth,
- char *local_auth)
+silc_server_password_authentication(SilcServer server, char *local_auth,
+ char *remote_auth)
{
- if (!remote_auth || !local_auth)
+ if (!remote_auth || !local_auth || strlen(local_auth) != strlen(remote_auth))
return FALSE;
if (!memcmp(remote_auth, local_auth, strlen(local_auth)))
silc_server_public_key_authentication(SilcServer server,
SilcPublicKey pub_key,
unsigned char *sign,
- uint32 sign_len,
+ SilcUInt32 sign_len,
SilcSKE ske)
{
SilcPKCS pkcs;
static int
silc_server_get_public_key_auth(SilcServer server,
- unsigned char *auth_data,
- uint32 *auth_data_len,
+ unsigned char **auth_data,
+ SilcUInt32 *auth_data_len,
SilcSKE ske)
{
int len;
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_LOG_ERROR(("Error computing signature"));
+
+ 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,
+ SilcHashTable local_publickeys,
+ unsigned char *remote_auth,
+ SilcUInt32 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_publickeys ||
+ !silc_hash_table_count(local_publickeys))) {
+ 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_publickeys) {
+ SilcPublicKey cached_key;
+ SilcPublicKey remote_key =
+ ((SilcIDListData)ctx->sock->user_data)->public_key;
+
+ SILC_LOG_DEBUG(("Public key authentication"));
+
+ /* Find the public key to be used in authentication */
+ cached_key = silc_server_find_public_key(server, local_publickeys,
+ remote_key);
+ if (!cached_key)
+ return FALSE;
+
+ result = silc_server_public_key_authentication(server, cached_key,
+ remote_auth,
+ remote_auth_len, ske);
+ }
+
+ SILC_LOG_DEBUG(("Authentication %s", result ? "successful" : "failed"));
+
+ 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. */
(SilcServerConnAuthInternalContext *)protocol->context;
SilcServer server = (SilcServer)ctx->server;
- SILC_LOG_DEBUG(("Start"));
-
if (protocol->state == SILC_PROTOCOL_STATE_UNKNOWN)
protocol->state = SILC_PROTOCOL_STATE_START;
- SILC_LOG_DEBUG(("State=%d", protocol->state));
+ SILC_LOG_DEBUG(("Current protocol state %d", protocol->state));
switch(protocol->state) {
case SILC_PROTOCOL_STATE_START:
* We are receiving party
*/
int ret;
- uint16 payload_len;
- uint16 conn_type;
+ SilcUInt16 payload_len;
+ SilcUInt16 conn_type;
unsigned char *auth_data = NULL;
SILC_LOG_INFO(("Performing authentication protocol for %s (%s)",
SILC_STR_UI_SHORT(&conn_type),
SILC_STR_END);
if (ret == -1) {
- SILC_LOG_DEBUG(("Bad payload in authentication packet"));
+ SILC_LOG_ERROR(("Bad payload in authentication packet"));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
}
if (payload_len != ctx->packet->buffer->len) {
- SILC_LOG_DEBUG(("Bad payload in authentication packet"));
+ SILC_LOG_ERROR(("Bad payload length in authentication packet"));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
if (conn_type < SILC_SOCKET_TYPE_CLIENT ||
conn_type > SILC_SOCKET_TYPE_ROUTER) {
- SILC_LOG_ERROR(("Bad connection type %d", conn_type));
+ SILC_LOG_ERROR(("Bad connection type (%d) in authentication packet",
+ conn_type));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
payload_len),
SILC_STR_END);
if (ret == -1) {
- SILC_LOG_DEBUG(("Bad payload in authentication packet"));
+ SILC_LOG_DEBUG(("Bad payload in authentication payload"));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
/* Remote end is client */
if (conn_type == SILC_SOCKET_TYPE_CLIENT) {
- SilcServerConfigSectionClientConnection *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;
+ SilcServerConfigClient *client = ctx->cconfig.ref_ptr;
+ if (client) {
+ ret = silc_server_get_authentication(ctx, client->passphrase,
+ client->publickeys,
+ 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 client connection"));
SILC_LOG_ERROR(("Remote client connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
silc_free(auth_data);
/* Remote end is server */
if (conn_type == SILC_SOCKET_TYPE_SERVER) {
- SilcServerConfigSectionServerConnection *serv = ctx->sconfig;
-
+ SilcServerConfigServer *serv = ctx->sconfig.ref_ptr;
+
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->publickeys,
+ 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 server connection"));
SILC_LOG_ERROR(("Remote server connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
/* Remote end is router */
if (conn_type == SILC_SOCKET_TYPE_ROUTER) {
- SilcServerConfigSectionServerConnection *serv = ctx->rconfig;
+ SilcServerConfigRouter *serv = ctx->rconfig.ref_ptr;
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->publickeys,
+ 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 router connection"));
SILC_LOG_ERROR(("Remote router connection not configured"));
SILC_LOG_ERROR(("Authentication failed"));
silc_free(auth_data);
SilcBuffer packet;
int payload_len = 0;
unsigned char *auth_data = NULL;
- uint32 auth_data_len = 0;
+ SilcUInt32 auth_data_len = 0;
switch(ctx->auth_meth) {
case SILC_AUTH_NONE:
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;
}
}
*/
unsigned char error[4];
- SILC_PUT32_MSB(SILC_AUTH_FAILED, error);
-
/* Authentication failed */
+ SILC_PUT32_MSB(SILC_AUTH_FAILED, error);
silc_server_packet_send(server, ctx->sock, SILC_PACKET_FAILURE,
0, error, 4, TRUE);
* We have received failure from remote
*/
+ SILC_LOG_ERROR(("Received Authentication Failure"));
+
/* Unregister the timeout task since the protocol has ended.
This was the timeout task to be executed if the protocol is
not completed fast enough. */
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;
}
}
{
SilcIDListData idata = (SilcIDListData)ctx->sock->user_data;
SilcSKEKeyMaterial *keymat;
- uint32 key_len = silc_cipher_get_key_len(idata->send_key);
- uint32 hash_len = idata->hash->hash->hash_len;
+ SilcUInt32 key_len = silc_cipher_get_key_len(idata->send_key);
+ SilcUInt32 hash_len = silc_hash_len(idata->hash);
SILC_LOG_DEBUG(("Generating new %s session keys (no PFS)",
send ? "sending" : "receiving"));
{
SilcIDListData idata = (SilcIDListData)ctx->sock->user_data;
SilcSKEKeyMaterial *keymat;
- uint32 key_len = silc_cipher_get_key_len(idata->send_key);
- uint32 hash_len = idata->hash->hash->hash_len;
+ SilcUInt32 key_len = silc_cipher_get_key_len(idata->send_key);
+ SilcUInt32 hash_len = silc_hash_len(idata->hash);
unsigned char *tmpbuf;
- uint32 klen;
+ SilcUInt32 klen;
SILC_LOG_DEBUG(("Generating new %s session keys (with PFS)",
send ? "sending" : "receiving"));
SilcIDListData idata = (SilcIDListData)ctx->sock->user_data;
SilcSKEStatus status;
- SILC_LOG_DEBUG(("Start"));
-
if (protocol->state == SILC_PROTOCOL_STATE_UNKNOWN)
protocol->state = SILC_PROTOCOL_STATE_START;
- SILC_LOG_DEBUG(("State=%d", protocol->state));
+ SILC_LOG_DEBUG(("Current protocol state %d", protocol->state));
switch(protocol->state) {
case SILC_PROTOCOL_STATE_START:
*/
if (ctx->packet->type != SILC_PACKET_KEY_EXCHANGE_1) {
- /* Error in protocol */
+ SILC_LOG_ERROR(("Error during Re-key (R PFS): re-key state is "
+ "incorrect (received %d, expected %d packet), "
+ "with %s (%s)", ctx->packet->type,
+ SILC_PACKET_KEY_EXCHANGE_1, ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
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_group_get_by_number(idata->rekey->ske_group,
&ctx->ske->prop->group);
status = silc_ske_responder_phase_2(ctx->ske, ctx->packet->buffer);
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Re-key (PFS)",
- silc_ske_map_status(status)));
-
+ SILC_LOG_ERROR(("Error (%s) during Re-key (R PFS), with %s (%s)",
+ silc_ske_map_status(status), ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
* 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_group_get_by_number(idata->rekey->ske_group,
&ctx->ske->prop->group);
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)));
-
+ SILC_LOG_ERROR(("Error (%s) during Re-key (I PFS), with %s (%s)",
+ silc_ske_map_status(status), ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
status = silc_ske_responder_finish(ctx->ske, NULL, NULL,
SILC_SKE_PK_TYPE_SILC);
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Re-key (PFS)",
- silc_ske_map_status(status)));
-
+ SILC_LOG_ERROR(("Error (%s) during Re-key (R PFS), with %s (%s)",
+ silc_ske_map_status(status), ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
* The packet type must be KE packet
*/
if (ctx->packet->type != SILC_PACKET_KEY_EXCHANGE_2) {
- /* Error in protocol */
+ SILC_LOG_ERROR(("Error during Re-key (I PFS): re-key state is "
+ "incorrect (received %d, expected %d packet), "
+ "with %s (%s)", ctx->packet->type,
+ SILC_PACKET_KEY_EXCHANGE_2, ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
status = silc_ske_initiator_finish(ctx->ske, ctx->packet->buffer);
if (status != SILC_SKE_STATUS_OK) {
- SILC_LOG_WARNING(("Error (%s) during Re-key (PFS)",
- silc_ske_map_status(status)));
-
+ SILC_LOG_ERROR(("Error (%s) during Re-key (I PFS), with %s (%s)",
+ silc_ske_map_status(status), ctx->sock->hostname,
+ ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
*/
if (ctx->packet->type != SILC_PACKET_REKEY_DONE) {
- /* Error in protocol */
+ SILC_LOG_ERROR(("Error during Re-key (%s PFS): re-key state is "
+ "incorrect (received %d, expected %d packet), "
+ "with %s (%s)", ctx->responder ? "R" : "I",
+ ctx->packet->type, SILC_PACKET_REKEY_DONE,
+ ctx->sock->hostname, ctx->sock->ip));
protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute(protocol, server->schedule, 0, 300000);
return;
/* We received the REKEY_DONE packet and all packets after this is
encrypted with the new key so set the decryption key to the new key */
- silc_server_protocol_rekey_generate(server, ctx, FALSE);
+ if (ctx->pfs == TRUE)
+ silc_server_protocol_rekey_generate_pfs(server, ctx, FALSE);
+ else
+ 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
* Error occured
*/
- if (ctx->pfs == TRUE) {
+ if (ctx->pfs == TRUE)
/* Send abort notification */
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
* We have received failure from remote
*/
+ SILC_LOG_ERROR(("Error during Re-Key: received Failure"));
+
/* Assure that after calling final callback there cannot be pending
executions for this protocol anymore. This just unregisters any
timeout callbacks for this protocol. */
projects / silc.git / blobdiff