/usr/include/kannel/wap/wtls_state-decl.h is in kannel-dev 1.4.3-2fakesync2build1.
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* The Kannel Software License, Version 1.0
*
* Copyright (c) 2001-2009 Kannel Group
* Copyright (c) 1998-2001 WapIT Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Kannel Group (http://www.kannel.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Kannel" and "Kannel Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact org@kannel.org.
*
* 5. Products derived from this software may not be called "Kannel",
* nor may "Kannel" appear in their name, without prior written
* permission of the Kannel Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE KANNEL GROUP OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Kannel Group. For more information on
* the Kannel Group, please see <http://www.kannel.org/>.
*
* Portions of this software are based upon software originally written at
* WapIT Ltd., Helsinki, Finland for the Kannel project.
*/
/*
* Macro calls to generate rows of the state table. See the documentation for
* guidance how to use and update these.
*
* by Nick Clarey <nclarey@3glab.com>
*/
STATE_NAME(NULL_STATE)
STATE_NAME(CREATING)
STATE_NAME(CREATED)
STATE_NAME(EXCHANGE)
STATE_NAME(COMMIT)
STATE_NAME(OPENING)
STATE_NAME(OPEN)
/* If the packet is a ClientHello */
/* We only include this case in state NULL; the others are handled by the
wtls_find_or_create function */
ROW(NULL_STATE,
T_Unitdata_Ind,
1,
{
/* The Wap event we have to dispatch */
WAPEvent *res;
wtls_Payload* tempPayload;
wtls_PDU* clientHelloPDU;
CipherSuite* ciphersuite;
int randomCounter;
tempPayload = (wtls_Payload*) gwlist_search (event->u.T_Unitdata_Ind.pdu_list,
(void*) client_hello,
match_handshake_type);
clientHelloPDU = wtls_pdu_unpack(tempPayload,wtls_machine);
/* Store the client's random value - use pack for simplicity */
wtls_machine->client_random = octstr_create("");
randomCounter = pack_int32(wtls_machine->client_random,0,
clientHelloPDU->u.handshake.client_hello->random->gmt_unix_time);
octstr_insert(wtls_machine->client_random,
clientHelloPDU->u.handshake.client_hello->random->random_bytes,
randomCounter);
/* Generate a SEC_Create_Res event, and pass it back into the queue */
res = wap_event_create(SEC_Create_Res);
res->u.SEC_Create_Res.addr_tuple =
wap_addr_tuple_duplicate(event->u.T_Unitdata_Ind.addr_tuple);
/* Select the ciphersuite from the supplied list */
ciphersuite = wtls_choose_ciphersuite(clientHelloPDU->u.handshake.client_hello->ciphersuites);
/* Set the relevant values in the wtls_machine and PDU structure */
wtls_machine->bulk_cipher_algorithm = ciphersuite->bulk_cipher_algo;
wtls_machine->mac_algorithm = ciphersuite->mac_algo;
res->u.SEC_Create_Res.bulk_cipher_algo = ciphersuite->bulk_cipher_algo;
res->u.SEC_Create_Res.mac_algo = ciphersuite->mac_algo;
res->u.SEC_Create_Res.client_key_id =
wtls_choose_clientkeyid(clientHelloPDU->u.handshake.client_hello->client_key_ids);
/* Set the sequence number mode in both the machine and the outgoing packet */
res->u.SEC_Create_Res.snmode = wtls_choose_snmode(clientHelloPDU->u.handshake.client_hello->snmode);
wtls_machine->sequence_number_mode = res->u.SEC_Create_Res.snmode;
/* Set the key refresh mode in both the machine and the outgoing packet */
res->u.SEC_Create_Res.krefresh = wtls_choose_krefresh(clientHelloPDU->u.handshake.client_hello->krefresh);
wtls_machine->key_refresh = res->u.SEC_Create_Res.krefresh;
/* Keep the data so we can send it back in EXCHANGE */
// temporary - needs to delete old one if exists !
//wtls_machine->handshake_data = octstr_create("");
octstr_append(wtls_machine->handshake_data, tempPayload->data);
debug("wtls:handle_event", 0,"Dispatching SEC_Create_Res event");
wtls_dispatch_event(res);
},
CREATING)
/* Creating State */
/* Termination */
ROW(CREATING,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc,
wtls_machine);
},
NULL_STATE)
/* Exception */
ROW(CREATING,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
CREATING)
/* Create Response - create a buffer with a "ServerHello" and possibly a Certificate or something else */
ROW(CREATING,
SEC_Create_Res,
1,
{
WAPEvent *req;
wtls_PDU* serverHelloPDU;
Random* tempRandom;
int randomCounter = 0;
/* Our serverHello */
serverHelloPDU = wtls_pdu_create(Handshake_PDU);
serverHelloPDU->u.handshake.msg_type = server_hello;
serverHelloPDU->u.handshake.server_hello = (ServerHello*) gw_malloc(sizeof(ServerHello));
/* Set our server version */
serverHelloPDU->u.handshake.server_hello->serverversion = 1;
/* Get a suitably random number - store it in both the machine structure and outgoing PDU */
tempRandom = wtls_get_random();
wtls_machine->server_random = octstr_create("");
randomCounter = pack_int32(wtls_machine->server_random,0,tempRandom->gmt_unix_time);
octstr_insert(wtls_machine->server_random,tempRandom->random_bytes,octstr_len(wtls_machine->server_random));
serverHelloPDU->u.handshake.server_hello->random = tempRandom;
/* At the moment, we don't support session caching, so tell them to forget about caching us */
serverHelloPDU->u.handshake.server_hello->session_id = octstr_create("");
/* We need to select an appropriate mechanism here from the ones listed */
serverHelloPDU->u.handshake.server_hello->client_key_id = event->u.SEC_Create_Res.client_key_id;
/* Get our ciphersuite details */
serverHelloPDU->u.handshake.server_hello->ciphersuite = (CipherSuite*) gw_malloc(sizeof(CipherSuite));
serverHelloPDU->u.handshake.server_hello->ciphersuite->bulk_cipher_algo = event->u.SEC_Create_Res.bulk_cipher_algo;
serverHelloPDU->u.handshake.server_hello->ciphersuite->mac_algo = event->u.SEC_Create_Res.mac_algo;
serverHelloPDU->u.handshake.server_hello->comp_method = null_comp;
/* We need to confirm the client's choice, or if they haven't specified one, select
one ourselves */
serverHelloPDU->u.handshake.server_hello->snmode = event->u.SEC_Create_Res.snmode;
/* We need to either confirm the client's choice of key refresh rate, or choose a lower rate */
serverHelloPDU->u.handshake.server_hello->krefresh = event->u.SEC_Create_Res.krefresh;
/* Add the PDUsto the server's outgoing list */
add_pdu(wtls_machine, serverHelloPDU);
/* Generate and dispatch a SEC_Exchange_Req or maybe a SEC_Commit_Req */
req = wap_event_create(SEC_Exchange_Req);
req->u.SEC_Exchange_Req.addr_tuple =
wap_addr_tuple_duplicate(event->u.T_Unitdata_Ind.addr_tuple);
wtls_dispatch_event(req);
debug("wtls: handle_event", 0,"Dispatching SEC_Exchange_Req event");
},
CREATED)
/* Created State */
/* Exchange Request - Full Handshake will be performed */
ROW(CREATED,
SEC_Exchange_Req,
1,
{
wtls_PDU* serverKeyXchgPDU;
wtls_PDU* serverHelloDonePDU;
/* Assert that the PDU list is valid */
gw_assert(wtls_machine->packet_to_send != NULL);
/* We'll also need a Server Key Exchange message */
serverKeyXchgPDU = wtls_pdu_create(Handshake_PDU);
serverKeyXchgPDU->u.handshake.msg_type = server_key_exchange;
serverKeyXchgPDU->u.handshake.server_key_exchange = (ServerKeyExchange*) gw_malloc(sizeof(ServerKeyExchange));
serverKeyXchgPDU->u.handshake.server_key_exchange->param_spec = NULL;
/* Allocate memory for the RSA component */
debug("wtls: ", 0,"Going to get the RSA public key...");
serverKeyXchgPDU->u.handshake.server_key_exchange->rsa_params = wtls_get_rsapublickey();
debug("wtls: ", 0,"...got it.");
add_pdu(wtls_machine, serverKeyXchgPDU);
debug("wtls: ", 0,"in CREATED - just added pdu...");
/* Add some more PDUs to the List - potentially a ServerKeyExchange,
a CertificateRequest and a ServerHelloDone */
/* Just a ServerHelloDone for now */
serverHelloDonePDU = wtls_pdu_create(Handshake_PDU);
serverHelloDonePDU->u.handshake.msg_type = server_hello_done;
add_pdu(wtls_machine, serverHelloDonePDU);
/* Translate the buffer and address details into a T_Unitdata_Req
* and send it winging it's way across the network */
send_queuedpdus(wtls_machine);
},
EXCHANGE)
/* Commit Request - Abbreviated Handshake will be performed */
ROW(CREATED,
SEC_Commit_Req,
1,
{
/* Assert that the PDU list is valid */
/* Add some more PDUs to the List - a ChangeCipherSpec and a Finished */
/* Translate the buffer and address details into a T_Unitdata_Req */
/* And send it winging it's way across the network */
},
COMMIT)
/* Terminate Request */
ROW(CREATED,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc, wtls_machine);
},
NULL_STATE)
/* Exception Request */
ROW(CREATED,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
CREATED)
/* Exchange State */
/* Unitdata arrival - identical ClientHello record */
ROW(EXCHANGE,
T_Unitdata_Ind,
clienthellos_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1,
{
/* It appears as though someone has sent us an identical ClientHello to the last one */
/* Make ourselves a T_Unitdata_Req with the last_transmitted_packet */
/* And send it on it's merry */
},
EXCHANGE)
/* Unitdata arrival - non-identical ClientHello record */
//ROW(EXCHANGE,
// T_Unitdata_Ind,
// clienthellos_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) != 1,
// {
/* So, this one's different. They must have changed their mind about something, so try a CREATING again */
/* Do the necessary SEC_Create_Ind stuff */
// },
// CREATING)
/* Unitdata arrival - good packet */
ROW(EXCHANGE,
T_Unitdata_Ind,
1,
{
RSAPublicKey *public_key = NULL;
Octstr* key_block;
Octstr* final_client_write_enc_key = NULL;
Octstr* final_server_write_enc_key = NULL;
Octstr* final_client_write_IV = NULL;
Octstr* final_server_write_IV = NULL;
Octstr* emptySecret = NULL;
Octstr* checking_data = NULL;
// packet_contains_changecipherspec (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
// packet_contains_finished (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
// packet_contains_optional_stuff (event->u.T_Unitdata_Ind.pdu_list) == 1,
/* The Wap PDUs we have to dispatch */
wtls_PDU* changeCipherSpecPDU;
wtls_PDU* finishedPDU;
/* The PDUs we have to process */
wtls_Payload* tempPayload;
wtls_PDU* clientKeyXchgPDU;
wtls_PDU* changeCipherSpec_incoming_PDU;
wtls_PDU* finished_incoming_PDU;
/* For decrypting/encrypting data */
Octstr* concatenatedRandoms=0;
Octstr* encryptedData=0;
Octstr* decryptedData=0;
Octstr* labelVerify=0;
Octstr* labelMaster=0;
/* Process the incoming event : ClientKeyExchange*/
tempPayload = (wtls_Payload*) gwlist_search (event->u.T_Unitdata_Ind.pdu_list,
(void*) client_key_exchange,
match_handshake_type);
/* Keep the data so we can send it back */
octstr_insert(wtls_machine->handshake_data, tempPayload->data,
octstr_len(wtls_machine->handshake_data));
clientKeyXchgPDU = wtls_pdu_unpack(tempPayload,wtls_machine);
wtls_pdu_dump(clientKeyXchgPDU,0);
/* Decrypt the client key exchange PDU */
encryptedData = clientKeyXchgPDU->u.handshake.client_key_exchange->rsa_params->encrypted_secret;
decryptedData = wtls_decrypt_rsa(encryptedData);
public_key = wtls_get_rsapublickey();
pack_int16(decryptedData, octstr_len(decryptedData), octstr_len(public_key->rsa_exponent));
octstr_insert(decryptedData, public_key->rsa_exponent, octstr_len(decryptedData));
pack_int16(decryptedData, octstr_len(decryptedData), octstr_len(public_key->rsa_modulus));
octstr_insert(decryptedData, public_key->rsa_modulus, octstr_len(decryptedData));
/* Concatenate our random data */
concatenatedRandoms = octstr_cat(wtls_machine->client_random,
wtls_machine->server_random);
/* Generate our master secret */
labelMaster = octstr_create("master secret");
wtls_machine->master_secret = wtls_calculate_prf(decryptedData, labelMaster,
concatenatedRandoms,20, wtls_machine );
octstr_destroy(labelMaster);
labelMaster = NULL;
/* calculate the key blocks */
calculate_server_key_block(wtls_machine);
calculate_client_key_block(wtls_machine);
/* Process the incoming event : ChangeCipherSpec*/
tempPayload = (wtls_Payload*) gwlist_search (event->u.T_Unitdata_Ind.pdu_list,
(void*) ChangeCipher_PDU,
match_pdu_type);
changeCipherSpec_incoming_PDU = wtls_pdu_unpack(tempPayload, wtls_machine);
if(changeCipherSpec_incoming_PDU->u.cc.change == 1) {
debug("wtls", 0,"Need to decrypt the PDUs from now on...");
wtls_machine->encrypted = 1;
wtls_decrypt_pdu_list(wtls_machine, event->u.T_Unitdata_Ind.pdu_list);
}
octstr_dump(wtls_machine->client_write_MAC_secret,0);
wtls_pdu_dump(changeCipherSpec_incoming_PDU,0);
/* Process the incoming event : Finished*/
tempPayload = (wtls_Payload*) gwlist_search (event->u.T_Unitdata_Ind.pdu_list,
(void*) finished,
match_handshake_type);
if(tempPayload == NULL)
debug("wtls", 0, "null finished !!!");
finished_incoming_PDU = wtls_pdu_unpack(tempPayload,wtls_machine);
debug("wtls", 0, "Client Finished PDU:");
wtls_pdu_dump(finished_incoming_PDU,0);
/* Check the verify_data */
labelVerify = octstr_create("client finished");
checking_data = wtls_calculate_prf(wtls_machine->master_secret, labelVerify,
(Octstr *)wtls_hash(wtls_machine->handshake_data, wtls_machine),
12, wtls_machine);
octstr_destroy(labelVerify);
labelVerify = NULL;
if(octstr_compare(finished_incoming_PDU->u.handshake.finished->verify_data, checking_data)==0) {
debug("wtls", 0, "DATA VERIFICATION OK");
}
/* Keep the data so we can send it back in the next message */
/*octstr_insert(wtls_machine->handshake_data, tempPayload->data,
octstr_len(wtls_machine->handshake_data));
*/
// temporary fix
octstr_truncate(tempPayload->data, 15);
octstr_insert(wtls_machine->handshake_data, tempPayload->data,
octstr_len(wtls_machine->handshake_data));
/* Create a new PDU List containing a ChangeCipherSpec and a Finished */
changeCipherSpecPDU = wtls_pdu_create(ChangeCipher_PDU);
changeCipherSpecPDU->u.cc.change = 1;
/* Generate our verify data */
finishedPDU = wtls_pdu_create(Handshake_PDU);
finishedPDU->u.handshake.msg_type = finished;
finishedPDU->cipher = 1;
finishedPDU->u.handshake.finished = gw_malloc(sizeof(Finished));
labelVerify = octstr_create("server finished");
finishedPDU->u.handshake.finished->verify_data = wtls_calculate_prf(wtls_machine->master_secret,
labelVerify,(Octstr *)wtls_hash(wtls_machine->handshake_data, wtls_machine),
12,wtls_machine);
/* Reset the accumulated Handshake data */
octstr_destroy(wtls_machine->handshake_data);
wtls_machine->handshake_data = octstr_create("");
octstr_destroy(labelVerify);
labelVerify = NULL;
/* Add the pdus to our list */
add_pdu(wtls_machine, changeCipherSpecPDU);
add_pdu(wtls_machine, finishedPDU);
/* Send it off */
send_queuedpdus(wtls_machine);
/* reset the seq_num */
wtls_machine->server_seq_num = 0;
},
OPENING)
/* Unitdata arrival - critical/fatal alert */
ROW(EXCHANGE,
T_Unitdata_Ind,
is_critical_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Terminate_Ind stuff */
/* And we're dead :-< */
},
NULL_STATE)
/* Unitdata arrival - warning alert */
ROW(EXCHANGE,
T_Unitdata_Ind,
is_warning_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Exception_Ind stuff */
},
EXCHANGE)
/* Terminate */
ROW(EXCHANGE,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc, wtls_machine);
},
NULL_STATE)
/* Exception */
ROW(EXCHANGE,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
EXCHANGE)
/* Commit State */
/* Unitdata arrival - identical ClientHello record */
ROW(COMMIT,
T_Unitdata_Ind,
clienthellos_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1,
{
/* It appears as though someone has sent us an identical ClientHello to the last one */
/* Make ourselves a T_Unitdata_Req with the last_transmitted_packet */
/* And send it on it's merry way */
},
COMMIT)
/* Unitdata arrival - non-identical ClientHello record */
ROW(COMMIT,
T_Unitdata_Ind,
clienthellos_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) != 1,
{
/* So, this one's different. They must have changed their mind about something, so try a CREATING again */
/* Do the necessary SEC_Create_Ind stuff */
},
CREATING)
/* Unitdata arrival - good packet with ChangeCipherSpec and Finished */
ROW(COMMIT,
T_Unitdata_Ind,
packet_contains_changecipherspec (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_finished (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_userdata (event->u.T_Unitdata_Ind.pdu_list) != 1,
{
/* Create ourselves a SEC_Commit_Cnf packet to send off */
/* Send it off */
},
OPEN)
/* Unitdata arrival - good packet with ChangeCipherSpec, Finished and UD */
ROW(COMMIT,
T_Unitdata_Ind,
packet_contains_changecipherspec (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_finished (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_userdata (event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Create a SEC_Commit_Cnf packet to send off */
/* Send it off */
/* Relay the contents of the packets up to the WTP or WSP layers,
depending on the destination port */
},
OPEN)
/* Unitdata arrival - critical/fatal alert */
ROW(COMMIT,
T_Unitdata_Ind,
is_critical_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Terminate_Ind stuff */
/* And we're dead :-< */
},
NULL_STATE)
/* Unitdata arrival - warning alert */
ROW(COMMIT,
T_Unitdata_Ind,
is_warning_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Exception_Ind stuff */
},
COMMIT)
/* Terminate */
ROW(COMMIT,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc, wtls_machine);
},
NULL_STATE)
/* Exception */
ROW(COMMIT,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
COMMIT)
/* Opening State */
/* Create Request */
ROW(OPENING,
SEC_Create_Request_Req,
1,
{
/* Send off a T_Unitdata_Req containing a HelloRequest */
},
OPENING)
/* Send out UnitData */
ROW(OPENING,
SEC_Unitdata_Req,
1,
{
/* Apply the negotiated security "stuff" to the received packet */
/* Send out the packet to the destination port/address requested */
},
OPENING)
/* Unitdata received - ClientHello */
//ROW(OPENING,
// T_Unitdata_Ind,
// packet_contains_clienthello (event->u.T_Unitdata_Ind.pdu_list) == 0,
// {
///* Hmm, they're obviously not happy with something we discussed, so let's head back to creating */
///* Do the necessary SEC_Create_Ind stuff */
//},
// CREATING)
/* Unitdata received */
ROW(OPENING,
T_Unitdata_Ind,
packet_contains_userdata(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
wtls_Payload* tempPayload;
wtls_PDU* ApplicationPDU;
tempPayload = (wtls_Payload*) gwlist_search (event->u.T_Unitdata_Ind.pdu_list,
(void*) Application_PDU,
match_pdu_type);
if(tempPayload == NULL)
debug("wtls", 0, "no App PDU found in list !!!");
debug("wtls",0, "PDU type: %d", tempPayload->type);
octstr_dump(tempPayload->data,0);
ApplicationPDU = wtls_pdu_unpack(tempPayload, wtls_machine);
wtls_pdu_dump(ApplicationPDU,0);
/* Apply the negotiated decryption/decoding/MAC check to the received data */
/* Take the userdata and pass it on up to the WTP/WSP, depending on the destination port */
/* calculate the padding length */
/*
contentLength = octstr_len(bufferCopy);
macSize = hash_table[wtls_machine->mac_algorithm].mac_size;
blockLength = bulk_table[wtls_machine->bulk_cipher_algorithm].block_size;
paddingLength = (contentLength + macSize + 1) % (blockLength);
*/
/* get the MAC */
},
OPEN)
/* Unitdata arrival - Certificate, ClientKeyExchange ... Finished */
ROW(OPENING,
T_Unitdata_Ind,
certificates_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1 &&
clientkeyexchanges_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1 &&
certifcateverifys_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1 &&
changecipherspecs_are_identical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1 &&
finisheds_are_indentical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1,
{
/* It appears as though someone has sent us an identical ClientHello to the last one */
/* Make ourselves a T_Unitdata_Req with the last_transmitted_packet */
/* And send it on it's merry way */
},
OPENING)
/* Unitdata arrival - critical/fatal alert */
ROW(OPENING,
T_Unitdata_Ind,
is_critical_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Terminate_Ind stuff */
/* And we're dead :-< */
},
NULL_STATE)
/* Unitdata arrival - warning alert */
ROW(OPENING,
T_Unitdata_Ind,
is_warning_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Exception_Ind stuff */
},
OPENING)
/* Terminate */
ROW(OPENING,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc, wtls_machine);
},
NULL_STATE)
/* Exception */
ROW(OPENING,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
OPENING)
/* Open State */
/* Create Request */
ROW(OPEN,
SEC_Create_Request_Req,
1,
{
/* Send off a T_Unitdata_Req with a HelloRequest */
},
OPEN)
/* Send out UnitData */
ROW(OPEN,
SEC_Unitdata_Req,
1,
{
/* Apply the negotiated security "stuff" to the received packet */
/* Send out the packet to the destination port/address requested */
},
OPEN)
/* Unitdata received - ClientHello */
ROW(OPEN,
T_Unitdata_Ind,
packet_contains_clienthello (event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Hmm, they're obviously not happy with something we discussed, so let's head back to creating */
/* Do the necessary SEC_Create_Ind stuff */
},
CREATING)
/* Unitdata received */
ROW(OPEN,
T_Unitdata_Ind,
packet_contains_userdata(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Apply the negotiated decryption/decoding/MAC check to the received data */
/* Take the userdata and pass it on up to the WTP/WSP, depending on the destination port */
},
OPEN)
/* Unitdata arrival - ChangeCipherSpec, Finished */
ROW(OPEN,
T_Unitdata_Ind,
packet_contains_changecipherspec (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_finished (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_userdata(event->u.T_Unitdata_Ind.pdu_list) != 1 &&
finisheds_are_indentical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1,
{
/* Just send out a T_Unitdata_Req with an Alert(duplicate_finished_received) */
},
OPEN)
/* Unitdata arrival - ChangeCipherSpec, Finished and UD */
ROW(OPEN,
T_Unitdata_Ind,
packet_contains_changecipherspec (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_finished (event->u.T_Unitdata_Ind.pdu_list) == 1 &&
packet_contains_userdata(event->u.T_Unitdata_Ind.pdu_list) == 1 &&
finisheds_are_indentical(event->u.T_Unitdata_Ind.pdu_list, wtls_machine->last_received_packet) == 1,
{
/* Apply the negotiated decryption/decoding/MAC check to the received data */
/* Take the userdata and pass it on up to the WTP/WSP, depending on the destination port */
/* Send out a T_Unitdata_Req with an Alert(duplicate_finished_received) */
},
OPEN)
/* Unitdata arrival - critical/fatal alert */
ROW(OPEN,
T_Unitdata_Ind,
is_critical_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Terminate_Ind stuff */
/* And we're dead :-< */
},
NULL_STATE)
/* Unitdata arrival - warning alert */
ROW(OPEN,
T_Unitdata_Ind,
is_warning_alert(event->u.T_Unitdata_Ind.pdu_list) == 1,
{
/* Do the necessary SEC_Terminate_Ind stuff */
},
OPEN)
/* Terminate */
ROW(OPEN,
SEC_Terminate_Req,
1,
{
/* Send off a T_Unitdata_Req containing an alert as specified */
send_alert(event->u.SEC_Terminate_Req.alert_level,
event->u.SEC_Terminate_Req.alert_desc, wtls_machine);
},
NULL_STATE)
/* Exception */
ROW(OPEN,
SEC_Exception_Req,
1,
{
/* Send off a T_Unitdata_Req containing an exception as specified */
send_alert(event->u.SEC_Exception_Req.alert_level,
event->u.SEC_Exception_Req.alert_desc, wtls_machine);
},
OPEN)
#undef ROW
#undef STATE_NAME
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