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/*
* Copyright (c) 2016-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/session/application_interface.h>
#include <vnet/session/application.h>
#include <vnet/session/session.h>
/** @file
VPP's application/session API bind/unbind/connect/disconnect calls
*/
/**
* unformat a vnet URI
*
* transport-proto://[hostname]ip46-addr:port
* eg. tcp://ip46-addr:port
* tls://[testtsl.fd.io]ip46-addr:port
*
* u8 ip46_address[16];
* u16 port_in_host_byte_order;
* stream_session_type_t sst;
* u8 *fifo_name;
*
* if (unformat (input, "%U", unformat_vnet_uri, &ip46_address,
* &sst, &port, &fifo_name))
* etc...
*
*/
uword
unformat_vnet_uri (unformat_input_t * input, va_list * args)
{
session_endpoint_cfg_t *sep = va_arg (*args, session_endpoint_cfg_t *);
u32 transport_proto = 0, port;
if (unformat (input, "%U://%U/%d", unformat_transport_proto,
&transport_proto, unformat_ip4_address, &sep->ip.ip4, &port))
{
sep->transport_proto = transport_proto;
sep->port = clib_host_to_net_u16 (port);
sep->is_ip4 = 1;
return 1;
}
else if (unformat (input, "%U://%U/%d", unformat_transport_proto,
&transport_proto, unformat_ip6_address, &sep->ip.ip6,
&port))
{
sep->transport_proto = transport_proto;
sep->port = clib_host_to_net_u16 (port);
sep->is_ip4 = 0;
return 1;
}
else if (unformat (input, "%U://session/%lu", unformat_transport_proto,
&transport_proto, &sep->parent_handle))
{
sep->transport_proto = transport_proto;
sep->ip.ip4.as_u32 = 1; /* ip need to be non zero in vnet */
return 1;
}
return 0;
}
static u8 *cache_uri;
static session_endpoint_cfg_t *cache_sep;
session_error_t
parse_uri (char *uri, session_endpoint_cfg_t *sep)
{
unformat_input_t _input, *input = &_input;
if (cache_uri && !strncmp (uri, (char *) cache_uri, vec_len (cache_uri)))
{
*sep = *cache_sep;
return 0;
}
/* Make sure */
uri = (char *) format (0, "%s%c", uri, 0);
/* Parse uri */
unformat_init_string (input, uri, strlen (uri));
if (!unformat (input, "%U", unformat_vnet_uri, sep))
{
unformat_free (input);
return SESSION_E_INVALID;
}
unformat_free (input);
vec_free (cache_uri);
cache_uri = (u8 *) uri;
if (cache_sep)
clib_mem_free (cache_sep);
cache_sep = clib_mem_alloc (sizeof (*sep));
*cache_sep = *sep;
return 0;
}
session_error_t
vnet_bind_uri (vnet_listen_args_t *a)
{
session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
int rv;
rv = parse_uri (a->uri, &sep);
if (rv)
return rv;
sep.app_wrk_index = 0;
clib_memcpy (&a->sep_ext, &sep, sizeof (sep));
return vnet_listen (a);
}
session_error_t
vnet_unbind_uri (vnet_unlisten_args_t *a)
{
session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
application_t *app;
session_t *listener;
u32 table_index;
session_error_t rv;
if ((rv = parse_uri (a->uri, &sep)))
return rv;
app = application_get (a->app_index);
if (!app)
return SESSION_E_INVALID;
table_index = application_session_table (app, fib_ip_proto (!sep.is_ip4));
listener = session_lookup_listener (table_index,
(session_endpoint_t *) & sep);
if (!listener)
return SESSION_E_ADDR_NOT_IN_USE;
a->handle = listen_session_get_handle (listener);
return vnet_unlisten (a);
}
session_error_t
vnet_connect_uri (vnet_connect_args_t *a)
{
session_endpoint_cfg_t sep = SESSION_ENDPOINT_CFG_NULL;
session_error_t rv;
if ((rv = parse_uri (a->uri, &sep)))
return rv;
clib_memcpy (&a->sep_ext, &sep, sizeof (sep));
if ((rv = vnet_connect (a)))
return rv;
return 0;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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