int
main(int argc, char **argv)
{
const char *opt_configfile = ISNS_DEFAULT_ISNSADM_CONFIG;
isns_client_t *clnt;
isns_attr_list_t *attrs;
isns_simple_t *reg;
isns_portal_info_t portal_info;
uint32_t status;
int opt_replace = 1;
int c, n, timeout;
while ((c = getopt(argc, argv, "c:d:n")) != -1) {
switch (c) {
case 'c':
opt_configfile = optarg;
break;
case 'd':
isns_enable_debugging(optarg);
break;
case 'n':
opt_replace = 0;
break;
default:
isns_fatal("Unknown option\n");
}
}
if (optind != argc - 1)
isns_fatal("Need timeout argument\n");
timeout = parse_timeout(argv[optind]);
isns_read_config(opt_configfile);
/*
---DevAttrReg[REPLACE]---
Source:
0020 string : iSCSI name = "iqn.2005-03.org.open-iscsi:blue"
Message attributes:
0001 string : Entity identifier = "blue.pauw.homeunix.net"
Operating attributes:
0001 string : Entity identifier = "blue.pauw.homeunix.net"
0002 uint32 : Entity protocol = iSCSI (2)
0010 ipaddr : Portal IP address = 192.168.1.2
0011 uint32 : Portal TCP/UDP port = 33849/tcp
0014 uint32 : ESI port = 56288/tcp
0020 string : iSCSI name = "iqn.2005-03.org.open-iscsi:blue"
0021 uint32 : iSCSI node type = Initiator
0022 string : iSCSI alias = "blue.pauw.homeunix.net"
[...]
response status 0x0003 (Invalid registration)
This would fail because we got confused about EID in
the replace case.
*/
isns_assign_string(&isns_config.ic_source_name,
"iqn.2005-03.org.open-iscsi:blue");
for (n = 0; n < 2; ++n) {
clnt = isns_create_default_client(NULL);
reg = isns_simple_create(ISNS_DEVICE_ATTRIBUTE_REGISTER,
clnt->ic_source, NULL);
reg->is_replace = opt_replace;
/* Message attributes */
attrs = ®->is_message_attrs;
STR(ENTITY_IDENTIFIER, "blue.pauw.homeunix.net");
/* Operating attributes */
attrs = ®->is_operating_attrs;
STR(ENTITY_IDENTIFIER, "blue.pauw.homeunix.net");
U32(ENTITY_PROTOCOL, 2);
isns_portal_parse(&portal_info, "192.168.1.2:33849/tcp", NULL);
isns_portal_to_attr_list(&portal_info,
ISNS_TAG_PORTAL_IP_ADDRESS,
ISNS_TAG_PORTAL_TCP_UDP_PORT,
attrs);
U32(ESI_PORT, 56288);
STR(ISCSI_NAME, "iqn.2005-03.org.open-iscsi:blue");
U32(ISCSI_NODE_TYPE, ISNS_ISCSI_INITIATOR_MASK);
STR(ISCSI_ALIAS, "blue.pauw.homeunix.net");
isns_simple_print(reg, isns_print_stdout);
status = isns_client_call(clnt, ®);
if (status != ISNS_SUCCESS)
isns_fatal("Unable to register object: %s\n",
isns_strerror(status));
printf("Successfully registered object\n");
// isns_simple_print(reg, isns_print_stdout);
isns_simple_free(reg);
isns_client_destroy(clnt);
if (n == 0) {
printf("Sleeping for %d seconds\n", timeout);
sleep(timeout);
}
}
return 0;
}
/*
* Process an incoming message
*/
isns_message_t *
isns_process_message(isns_server_t *srv, isns_message_t *msg)
{
struct isns_service_ops *ops = srv->is_ops;
uint16_t function = msg->im_header.i_function;
int status = ISNS_SUCCESS;
isns_simple_t *call = NULL, *reply = NULL;
isns_message_t *res_msg = NULL;
isns_db_t *db = srv->is_db;
status = isns_simple_decode(msg, &call);
if (status) {
isns_debug_message("Failed to decode %s request: %s\n",
isns_function_name(msg->im_header.i_function),
isns_strerror(status));
goto reply;
}
isns_simple_print(call, isns_debug_message);
/* Set policy and privileges based on the
* sender's identity. */
if (!(call->is_policy = isns_policy_bind(msg)))
goto err_unauthorized;
if (!isns_policy_validate_function(call->is_policy, msg))
goto err_unauthorized;
/* Checks related to the message source.
* Note - some messages do not use a source.
*/
if (call->is_source) {
/* Validate the message source. This checks whether the client
* is permitted to use this source node name.
* Beware - not all messages include a source.
*/
if (!isns_policy_validate_source(call->is_policy, call->is_source))
goto err_unauthorized;
/* This may fail if the source node isn't in the DB yet. */
isns_source_set_node(call->is_source, db);
/*
* 6.2.6. Registration Period
*
* The registration SHALL be removed from the iSNS database
* if an iSNS Protocol message is not received from the
* iSNS client before the registration period has expired.
* Receipt of any iSNS Protocol message from the iSNS client
* automatically refreshes the Entity Registration Period and
* Entity Registration Timestamp. To prevent a registration
* from expiring, the iSNS client should send an iSNS Protocol
* message to the iSNS server at intervals shorter than the
* registration period. Such a message can be as simple as a
* query for one of its own attributes, using its associated
* iSCSI Name or FC Port Name WWPN as the Source attribute.
*/
/* Thusly, we update the timestamps of all entities
* registered by this source. */
isns_entity_touch(call->is_source->is_entity);
}
/* Handle the requested function. If the function vector is
* NULL, silently discard the message. */
switch (function) {
#define DO(rw, FUNCTION, __function) \
case FUNCTION: \
if (!ops->__function) \
goto no_reply; \
\
if (!isns_begin_##rw##_operation(srv, call, &status)) \
break; \
status = ops->__function(srv, call, &reply); \
isns_end_##rw##_operation(srv, call, &status); \
break
DO(write, ISNS_DEVICE_ATTRIBUTE_REGISTER, process_registration);
DO(read, ISNS_DEVICE_ATTRIBUTE_QUERY, process_query);
DO(read, ISNS_DEVICE_GET_NEXT, process_getnext);
DO(write, ISNS_DEVICE_DEREGISTER, process_deregistration);
DO(write, ISNS_DD_REGISTER, process_dd_registration);
DO(write, ISNS_DD_DEREGISTER, process_dd_deregistration);
DO(read, ISNS_SCN_REGISTER, process_scn_registration);
DO(read, ISNS_SCN_DEREGISTER, process_scn_deregistration);
DO(read, ISNS_SCN_EVENT, process_scn_event);
DO(read, ISNS_STATE_CHANGE_NOTIFICATION, process_scn);
DO(read, ISNS_ENTITY_STATUS_INQUIRY, process_esi);
DO(read, ISNS_HEARTBEAT, process_heartbeat);
#undef DO
default:
isns_error("Function %s not supported\n",
isns_function_name(function));
status = ISNS_MESSAGE_NOT_SUPPORTED;
break;
}
reply:
/* Commit any changes to the DB before we reply */
if (db)
isns_db_sync(db);
/* Send out SCN notifications */
isns_flush_events();
if (reply != NULL) {
reply->is_function |= 0x8000;
isns_simple_print(reply, isns_debug_message);
/* Encode the whole thing */
status = isns_simple_encode_response(reply, msg, &res_msg);
}
/* No reply, or error when encoding it:
* just send the error, nothing else. */
if (res_msg == NULL) {
res_msg = isns_create_reply(msg);
if (status == ISNS_SUCCESS)
status = ISNS_INTERNAL_ERROR;
}
isns_debug_message("response status 0x%04x (%s)\n",
status, isns_strerror(status));
if (status != ISNS_SUCCESS)
isns_message_set_error(res_msg, status);
no_reply:
isns_simple_free(call);
if (reply)
isns_simple_free(reply);
return res_msg;
err_unauthorized:
status = ISNS_SOURCE_UNAUTHORIZED;
goto reply;
}
