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- /****************************************************************************
- * net/inet/ipv4_getpeername.c
- *
- * Copyright (C) 2017 Pinecone Inc. All rights reserved.
- * Author: Guiding Li<liguiding@pinecone.net>
- *
- * 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. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS 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
- * COPYRIGHT OWNER OR 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.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <string.h>
- #include <errno.h>
- #include <assert.h>
- #include <nuttx/net/net.h>
- #include <nuttx/net/netdev.h>
- #include "netdev/netdev.h"
- #include "socket/socket.h"
- #include "udp/udp.h"
- #include "tcp/tcp.h"
- #include "inet/inet.h"
- #ifdef CONFIG_NET_IPv4
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: ipv4_getpeername
- *
- * Description:
- * The ipv4_getpeername() function retrieves the locally-bound name of the
- * specified PF_NET socket.
- *
- * Parameters:
- * psock Point to the socket structure instance [in]
- * addr sockaddr structure to receive data [out]
- * addrlen Length of sockaddr structure [in/out]
- *
- * Returned Value:
- * On success, 0 is returned, the 'addr' argument points to the address
- * of the socket, and the 'addrlen' argument points to the length of the
- * address. Otherwise, a negated errno value is returned. See
- * getpeername() for the list of returned error values.
- *
- ****************************************************************************/
- int ipv4_getpeername(FAR struct socket *psock, FAR struct sockaddr *addr,
- FAR socklen_t *addrlen)
- {
- #if defined(NET_TCP_HAVE_STACK) || defined(NET_UDP_HAVE_STACK)
- FAR struct sockaddr_in *outaddr = (FAR struct sockaddr_in *)addr;
- in_addr_t ripaddr;
- /* Check if enough space has been provided for the full address */
- if (*addrlen < sizeof(struct sockaddr_in))
- {
- /* This function is supposed to return the partial address if
- * a smaller buffer has been provided. This support has not
- * been implemented.
- */
- return -ENOSYS;
- }
- /* Verify that the socket has been connected */
- if ((psock->s_flags & _SF_CONNECTED) == 0)
- {
- return -ENOTCONN;
- }
- /* Set the port number */
- switch (psock->s_type)
- {
- #ifdef NET_TCP_HAVE_STACK
- case SOCK_STREAM:
- {
- FAR struct tcp_conn_s *tcp_conn = (FAR struct tcp_conn_s *)psock->s_conn;
- outaddr->sin_port = tcp_conn->rport; /* Already in network byte order */
- ripaddr = tcp_conn->u.ipv4.raddr;
- }
- break;
- #endif
- #ifdef NET_UDP_HAVE_STACK
- case SOCK_DGRAM:
- {
- FAR struct udp_conn_s *udp_conn = (FAR struct udp_conn_s *)psock->s_conn;
- outaddr->sin_port = udp_conn->rport; /* Already in network byte order */
- ripaddr = udp_conn->u.ipv4.raddr;
- }
- break;
- #endif
- default:
- return -EOPNOTSUPP;
- }
- /* Set the address family and the IP address */
- outaddr->sin_family = psock->s_domain;
- outaddr->sin_addr.s_addr = ripaddr;
- *addrlen = sizeof(struct sockaddr_in);
- /* Return success */
- return OK;
- #else
- return -EOPNOTSUPP;
- #endif
- }
- #endif /* CONFIG_NET_IPv4 */
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