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/*
*------------------------------------------------------------------
* sockclnt_vlib.c
*
* Copyright (c) 2009 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 <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <vppinfra/byte_order.h>
#include <netdb.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <vlibmemory/api.h>
#include <vlibsocket/api.h>
#include <vlibsocket/vl_socket_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vlibsocket/vl_socket_api_h.h>
#undef vl_typedefs
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vlibsocket/vl_socket_api_h.h>
#undef vl_printfun
/* instantiate all the endian swap functions we know about */
#define vl_endianfun
#include <vlibsocket/vl_socket_api_h.h>
#undef vl_endianfun
static void
vl_api_sockclnt_create_reply_t_handler (vl_api_sockclnt_create_reply_t * mp)
{
vl_api_registration_t *rp = socket_main.current_rp;
rp->server_handle = mp->handle;
rp->server_index = mp->index;
}
static void
vl_api_sockclnt_delete_reply_t_handler (vl_api_sockclnt_delete_reply_t * mp)
{
unix_main_t *um = &unix_main;
unix_file_t *uf = socket_main.current_uf;
vl_api_registration_t *rp = socket_main.current_rp;
unix_file_del (um, uf);
vl_free_socket_registration_index (rp->vl_api_registration_pool_index);
}
u32
sockclnt_open_index (char *client_name, char *hostname, int port)
{
vl_api_registration_t *rp;
unix_main_t *um = &unix_main;
unix_file_t template = { 0 };
int sockfd;
int one = 1;
int rv;
struct sockaddr_in serv_addr;
struct hostent *server;
vl_api_sockclnt_create_t *mp;
char my_hostname[64];
server = gethostbyname (hostname);
if (server == NULL)
{
clib_warning ("Couldn't translate server name %s", hostname);
return ~0;
}
/* Set up non-blocking server socket on CLIENT_API_SERVER_PORT */
sockfd = socket (AF_INET, SOCK_STREAM, 0);
if (sockfd < 0)
{
clib_unix_warning ("socket");
return ~0;
}
bzero ((char *) &serv_addr, sizeof (serv_addr));
serv_addr.sin_family = AF_INET;
bcopy ((char *) server->h_addr,
(char *) &serv_addr.sin_addr.s_addr, server->h_length);
serv_addr.sin_port = htons (port);
if (connect (sockfd, (const void *) &serv_addr, sizeof (serv_addr)) < 0)
{
clib_unix_warning ("Connect failure to (%s, %d)", hostname, port);
close(sockfd);
return ~0;
}
rv = ioctl (sockfd, FIONBIO, &one);
if (rv < 0)
{
clib_unix_warning ("FIONBIO");
close(sockfd);
return ~0;
}
pool_get (socket_main.registration_pool, rp);
memset (rp, 0, sizeof (*rp));
rp->registration_type = REGISTRATION_TYPE_SOCKET_CLIENT;
rp->vl_api_registration_pool_index = rp - socket_main.registration_pool;
template.read_function = vl_socket_read_ready;
template.write_function = vl_socket_write_ready;
template.file_descriptor = sockfd;
template.private_data = rp - socket_main.registration_pool;
rp->unix_file_index = unix_file_add (um, &template);
rp->name = format (0, "%s:%d", hostname, port);
mp = vl_msg_api_alloc (sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SOCKCLNT_CREATE);
mp->context = rp - socket_main.registration_pool;
if (gethostname (my_hostname, sizeof (my_hostname)) < 0)
{
clib_unix_warning ("gethostname");
strncpy (my_hostname, "unknown!", sizeof (my_hostname) - 1);
}
strncpy ((char *) mp->name, my_hostname, sizeof (mp->name) - 1);
vl_msg_api_send (rp, (u8 *) mp);
return rp - socket_main.registration_pool;
}
void
sockclnt_close_index (u32 index)
{
vl_api_sockclnt_delete_t *mp;
vl_api_registration_t *rp;
/* Don't crash / assert if fed garbage */
if (pool_is_free_index (socket_main.registration_pool, index))
{
clib_warning ("registration_pool index %d already free", index);
return;
}
rp = pool_elt_at_index (socket_main.registration_pool, index);
mp = vl_msg_api_alloc (sizeof (*mp));
mp->_vl_msg_id = ntohs (VL_API_SOCKCLNT_DELETE);
mp->handle = rp->server_handle;
mp->index = rp->server_index;
vl_msg_api_send (rp, (u8 *) mp);
}
vl_api_registration_t *
sockclnt_get_registration (u32 index)
{
return pool_elt_at_index (socket_main.registration_pool, index);
}
/*
* Both rx and tx msgs MUST be initialized, or we'll have
* precisely no idea how many bytes to write into the API trace...
*/
#define foreach_sockclnt_api_msg \
_(SOCKCLNT_CREATE_REPLY, sockclnt_create_reply) \
_(SOCKCLNT_DELETE_REPLY, sockclnt_delete_reply)
static clib_error_t *
sockclnt_vlib_api_init (vlib_main_t * vm)
{
#define _(N,n) \
vl_msg_api_set_handlers(VL_API_##N, #n, \
vl_api_##n##_t_handler, \
vl_noop_handler, \
vl_api_##n##_t_endian, \
vl_api_##n##_t_print, \
sizeof(vl_api_##n##_t), 1);
foreach_sockclnt_api_msg;
#undef _
return 0;
}
VLIB_API_INIT_FUNCTION (sockclnt_vlib_api_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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