a5c89047c0
NetBSD Foundation Membership still pending.) This stack was written by Iain under sponsorship from Itronix Inc. The stack includes support for rfcomm networking (networking via your bluetooth enabled cell phone), hid devices (keyboards/mice), and headsets. Drivers for both PCMCIA and USB bluetooth controllers are included.
624 lines
16 KiB
C
624 lines
16 KiB
C
/* $NetBSD: server.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2006 Itronix Inc.
|
|
* 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 name of Itronix Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``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 ITRONIX INC. 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.
|
|
*/
|
|
/*
|
|
* server.c
|
|
*
|
|
* Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $Id: server.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $
|
|
* $FreeBSD: src/usr.sbin/bluetooth/sdpd/server.c,v 1.2 2005/12/06 17:56:36 emax Exp $
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: server.c,v 1.1 2006/06/19 15:44:56 gdamore Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/select.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/ucred.h>
|
|
#include <sys/un.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <assert.h>
|
|
#include <bluetooth.h>
|
|
#include <errno.h>
|
|
#include <pwd.h>
|
|
#include <sdp.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include "log.h"
|
|
#include "profile.h"
|
|
#include "provider.h"
|
|
#include "server.h"
|
|
|
|
static void server_accept_client (server_p srv, int32_t fd);
|
|
static int32_t server_process_request (server_p srv, int32_t fd);
|
|
static int32_t server_send_error_response (server_p srv, int32_t fd,
|
|
uint16_t error);
|
|
static void server_close_fd (server_p srv, int32_t fd);
|
|
|
|
/*
|
|
* Initialize server
|
|
*/
|
|
|
|
int32_t
|
|
server_init(server_p srv, char const *control)
|
|
{
|
|
struct sockaddr_un un;
|
|
struct sockaddr_bt l2;
|
|
socklen_t size;
|
|
int32_t unsock, l2sock;
|
|
uint16_t imtu;
|
|
int opt;
|
|
|
|
assert(srv != NULL);
|
|
assert(control != NULL);
|
|
|
|
memset(srv, 0, sizeof(srv));
|
|
|
|
/* Open control socket */
|
|
if (unlink(control) < 0 && errno != ENOENT) {
|
|
log_crit("Could not unlink(%s). %s (%d)",
|
|
control, strerror(errno), errno);
|
|
return (-1);
|
|
}
|
|
|
|
unsock = socket(PF_LOCAL, SOCK_STREAM, 0);
|
|
if (unsock < 0) {
|
|
log_crit("Could not create control socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
return (-1);
|
|
}
|
|
|
|
opt = 1;
|
|
if (setsockopt(unsock, 0, LOCAL_CREDS, &opt, sizeof(opt)) < 0)
|
|
log_crit("Warning: No credential checks on control socket");
|
|
|
|
memset(&un, 0, sizeof(un));
|
|
un.sun_len = sizeof(un);
|
|
un.sun_family = AF_LOCAL;
|
|
strlcpy(un.sun_path, control, sizeof(un.sun_path));
|
|
|
|
if (bind(unsock, (struct sockaddr *) &un, sizeof(un)) < 0) {
|
|
log_crit("Could not bind control socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
return (-1);
|
|
}
|
|
|
|
if (chmod(control, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) < 0) {
|
|
log_crit("Could not change permissions on control socket. " \
|
|
"%s (%d)", strerror(errno), errno);
|
|
close(unsock);
|
|
return (-1);
|
|
}
|
|
|
|
if (listen(unsock, 10) < 0) {
|
|
log_crit("Could not listen on control socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
return (-1);
|
|
}
|
|
|
|
/* Open L2CAP socket */
|
|
l2sock = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
|
|
if (l2sock < 0) {
|
|
log_crit("Could not create L2CAP socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
return (-1);
|
|
}
|
|
|
|
size = sizeof(imtu);
|
|
if (getsockopt(l2sock, BTPROTO_L2CAP, SO_L2CAP_IMTU, &imtu, &size) < 0) {
|
|
log_crit("Could not get L2CAP IMTU. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
memset(&l2, 0, sizeof(l2));
|
|
l2.bt_len = sizeof(l2);
|
|
l2.bt_family = AF_BLUETOOTH;
|
|
l2.bt_psm = L2CAP_PSM_SDP;
|
|
bdaddr_copy(&l2.bt_bdaddr, BDADDR_ANY);
|
|
|
|
if (bind(l2sock, (struct sockaddr *) &l2, sizeof(l2)) < 0) {
|
|
log_crit("Could not bind L2CAP socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
if (listen(l2sock, 10) < 0) {
|
|
log_crit("Could not listen on L2CAP socket. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
/* Allocate incoming buffer */
|
|
srv->imtu = (imtu > SDP_LOCAL_MTU)? imtu : SDP_LOCAL_MTU;
|
|
srv->req = (uint8_t *) calloc(srv->imtu, sizeof(srv->req[0]));
|
|
if (srv->req == NULL) {
|
|
log_crit("Could not allocate request buffer");
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
/* Allocate memory for descriptor index */
|
|
srv->fdidx = (fd_idx_p) calloc(FD_SETSIZE, sizeof(srv->fdidx[0]));
|
|
if (srv->fdidx == NULL) {
|
|
log_crit("Could not allocate fd index");
|
|
free(srv->req);
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
/* Register Service Discovery profile (attach it to control socket) */
|
|
if (provider_register_sd(unsock) < 0) {
|
|
log_crit("Could not register Service Discovery profile");
|
|
free(srv->fdidx);
|
|
free(srv->req);
|
|
close(unsock);
|
|
close(l2sock);
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* If we got here then everything is fine. Add both control sockets
|
|
* to the index.
|
|
*/
|
|
|
|
FD_ZERO(&srv->fdset);
|
|
srv->maxfd = (unsock > l2sock)? unsock : l2sock;
|
|
|
|
FD_SET(unsock, &srv->fdset);
|
|
srv->fdidx[unsock].valid = 1;
|
|
srv->fdidx[unsock].server = 1;
|
|
srv->fdidx[unsock].control = 1;
|
|
srv->fdidx[unsock].priv = 0;
|
|
srv->fdidx[unsock].rsp_cs = 0;
|
|
srv->fdidx[unsock].rsp_size = 0;
|
|
srv->fdidx[unsock].rsp_limit = 0;
|
|
srv->fdidx[unsock].omtu = SDP_LOCAL_MTU;
|
|
srv->fdidx[unsock].rsp = NULL;
|
|
|
|
FD_SET(l2sock, &srv->fdset);
|
|
srv->fdidx[l2sock].valid = 1;
|
|
srv->fdidx[l2sock].server = 1;
|
|
srv->fdidx[l2sock].control = 0;
|
|
srv->fdidx[l2sock].priv = 0;
|
|
srv->fdidx[l2sock].rsp_cs = 0;
|
|
srv->fdidx[l2sock].rsp_size = 0;
|
|
srv->fdidx[l2sock].rsp_limit = 0;
|
|
srv->fdidx[l2sock].omtu = 0; /* unknown */
|
|
srv->fdidx[l2sock].rsp = NULL;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Shutdown server
|
|
*/
|
|
|
|
void
|
|
server_shutdown(server_p srv)
|
|
{
|
|
int fd;
|
|
|
|
assert(srv != NULL);
|
|
|
|
for (fd = 0; fd < srv->maxfd + 1; fd ++)
|
|
if (srv->fdidx[fd].valid)
|
|
server_close_fd(srv, fd);
|
|
|
|
free(srv->req);
|
|
free(srv->fdidx);
|
|
|
|
memset(srv, 0, sizeof(*srv));
|
|
}
|
|
|
|
/*
|
|
* Do one server iteration
|
|
*/
|
|
|
|
int32_t
|
|
server_do(server_p srv)
|
|
{
|
|
fd_set fdset;
|
|
int32_t n, fd;
|
|
|
|
assert(srv != NULL);
|
|
|
|
/* Copy cached version of the fd set and call select */
|
|
memcpy(&fdset, &srv->fdset, sizeof(fdset));
|
|
n = select(srv->maxfd + 1, &fdset, NULL, NULL, NULL);
|
|
if (n < 0) {
|
|
if (errno == EINTR)
|
|
return (0);
|
|
|
|
log_err("Could not select(%d, %p). %s (%d)",
|
|
srv->maxfd + 1, &fdset, strerror(errno), errno);
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/* Process descriptors */
|
|
for (fd = 0; fd < srv->maxfd + 1 && n > 0; fd ++) {
|
|
if (!FD_ISSET(fd, &fdset))
|
|
continue;
|
|
|
|
assert(srv->fdidx[fd].valid);
|
|
n --;
|
|
|
|
if (srv->fdidx[fd].server)
|
|
server_accept_client(srv, fd);
|
|
else if (server_process_request(srv, fd) != 0)
|
|
server_close_fd(srv, fd);
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
/*
|
|
* Accept new client connection and register it with index
|
|
*/
|
|
|
|
static void
|
|
server_accept_client(server_p srv, int32_t fd)
|
|
{
|
|
uint8_t *rsp = NULL;
|
|
socklen_t size;
|
|
int32_t cfd;
|
|
uint16_t omtu;
|
|
|
|
do {
|
|
cfd = accept(fd, NULL, NULL);
|
|
} while (cfd < 0 && errno == EINTR);
|
|
|
|
if (cfd < 0) {
|
|
log_err("Could not accept connection on %s socket. %s (%d)",
|
|
srv->fdidx[fd].control? "control" : "L2CAP",
|
|
strerror(errno), errno);
|
|
return;
|
|
}
|
|
|
|
assert(!FD_ISSET(cfd, &srv->fdset));
|
|
assert(!srv->fdidx[cfd].valid);
|
|
|
|
if (!srv->fdidx[fd].control) {
|
|
/* Get local BD_ADDR */
|
|
size = sizeof(srv->req_sa);
|
|
if (getsockname(cfd,(struct sockaddr*)&srv->req_sa, &size) < 0) {
|
|
log_err("Could not get local BD_ADDR. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(cfd);
|
|
return;
|
|
}
|
|
|
|
/* Get outgoing MTU */
|
|
size = sizeof(omtu);
|
|
if (getsockopt(cfd, BTPROTO_L2CAP, SO_L2CAP_OMTU, &omtu, &size) < 0) {
|
|
log_err("Could not get L2CAP OMTU. %s (%d)",
|
|
strerror(errno), errno);
|
|
close(cfd);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The maximum size of the L2CAP packet is 65536 bytes.
|
|
* The minimum L2CAP MTU is 43 bytes. That means we need
|
|
* 65536 / 43 = ~1524 chunks to transfer maximum packet
|
|
* size with minimum MTU. The "rsp_cs" field in fd_idx_t
|
|
* is 11 bit wide that gives us upto 2048 chunks.
|
|
*/
|
|
|
|
if (omtu < L2CAP_MTU_MINIMUM) {
|
|
log_err("L2CAP OMTU is too small (%d bytes)", omtu);
|
|
close(cfd);
|
|
return;
|
|
}
|
|
} else {
|
|
bdaddr_copy(&srv->req_sa.bt_bdaddr, BDADDR_ANY);
|
|
omtu = srv->fdidx[fd].omtu;
|
|
}
|
|
|
|
/*
|
|
* Allocate buffer. This is an overkill, but we can not know how
|
|
* big our reply is going to be.
|
|
*/
|
|
|
|
rsp = (uint8_t *) calloc(L2CAP_MTU_MAXIMUM, sizeof(rsp[0]));
|
|
if (rsp == NULL) {
|
|
log_crit("Could not allocate response buffer");
|
|
close(cfd);
|
|
return;
|
|
}
|
|
|
|
/* Add client descriptor to the index */
|
|
FD_SET(cfd, &srv->fdset);
|
|
if (srv->maxfd < cfd)
|
|
srv->maxfd = cfd;
|
|
srv->fdidx[cfd].valid = 1;
|
|
srv->fdidx[cfd].server = 0;
|
|
srv->fdidx[cfd].control = srv->fdidx[fd].control;
|
|
srv->fdidx[cfd].priv = 0;
|
|
srv->fdidx[cfd].rsp_cs = 0;
|
|
srv->fdidx[cfd].rsp_size = 0;
|
|
srv->fdidx[cfd].rsp_limit = 0;
|
|
srv->fdidx[cfd].omtu = omtu;
|
|
srv->fdidx[cfd].rsp = rsp;
|
|
}
|
|
|
|
/*
|
|
* Process request from the client
|
|
*/
|
|
|
|
static int32_t
|
|
server_process_request(server_p srv, int32_t fd)
|
|
{
|
|
uint8_t ctl[128];
|
|
sdp_pdu_p pdu = (sdp_pdu_p) srv->req;
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
int32_t len, error;
|
|
struct cmsghdr *cmsg;
|
|
struct sockcred *cred;
|
|
|
|
assert(srv->imtu > 0);
|
|
assert(srv->req != NULL);
|
|
assert(FD_ISSET(fd, &srv->fdset));
|
|
assert(srv->fdidx[fd].valid);
|
|
assert(!srv->fdidx[fd].server);
|
|
assert(srv->fdidx[fd].rsp != NULL);
|
|
assert(srv->fdidx[fd].omtu >= L2CAP_MTU_MINIMUM);
|
|
|
|
iov.iov_base = srv->req;
|
|
iov.iov_len = srv->imtu;
|
|
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = ctl;
|
|
msg.msg_controllen = sizeof(ctl);
|
|
msg.msg_flags = 0;
|
|
|
|
do {
|
|
len = recvmsg(fd, &msg, 0);
|
|
} while (len < 0 && errno == EINTR);
|
|
|
|
if (len < 0) {
|
|
log_err("Could not receive SDP request from %s socket. %s (%d)",
|
|
srv->fdidx[fd].control? "control" : "L2CAP",
|
|
strerror(errno), errno);
|
|
return (-1);
|
|
}
|
|
if (len == 0) {
|
|
log_info("Client on %s socket has disconnected",
|
|
srv->fdidx[fd].control? "control" : "L2CAP");
|
|
return (-1);
|
|
}
|
|
|
|
if ((cmsg = CMSG_FIRSTHDR(&msg)) != NULL
|
|
&& cmsg->cmsg_level == SOL_SOCKET
|
|
&& cmsg->cmsg_type == SCM_CREDS
|
|
&& cmsg->cmsg_len >= sizeof(*cmsg) + sizeof(*cred)
|
|
&& (cred = (struct sockcred *)CMSG_DATA(cmsg)) != NULL
|
|
&& (cred->sc_uid == 0 || cred->sc_euid == 0))
|
|
srv->fdidx[fd].priv = 1;
|
|
|
|
if (sizeof(*pdu) + (pdu->len = ntohs(pdu->len)) == len) {
|
|
switch (pdu->pid) {
|
|
case SDP_PDU_SERVICE_SEARCH_REQUEST:
|
|
error = server_prepare_service_search_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_ATTRIBUTE_REQUEST:
|
|
error = server_prepare_service_attribute_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_SEARCH_ATTRIBUTE_REQUEST:
|
|
error = server_prepare_service_search_attribute_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_REGISTER_REQUEST:
|
|
error = server_prepare_service_register_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_UNREGISTER_REQUEST:
|
|
error = server_prepare_service_unregister_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_CHANGE_REQUEST:
|
|
error = server_prepare_service_change_response(srv, fd);
|
|
break;
|
|
|
|
default:
|
|
error = SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX;
|
|
break;
|
|
}
|
|
} else
|
|
error = SDP_ERROR_CODE_INVALID_PDU_SIZE;
|
|
|
|
if (error == 0) {
|
|
switch (pdu->pid) {
|
|
case SDP_PDU_SERVICE_SEARCH_REQUEST:
|
|
error = server_send_service_search_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_ATTRIBUTE_REQUEST:
|
|
error = server_send_service_attribute_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_SEARCH_ATTRIBUTE_REQUEST:
|
|
error = server_send_service_search_attribute_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_REGISTER_REQUEST:
|
|
error = server_send_service_register_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_UNREGISTER_REQUEST:
|
|
error = server_send_service_unregister_response(srv, fd);
|
|
break;
|
|
|
|
case SDP_PDU_SERVICE_CHANGE_REQUEST:
|
|
error = server_send_service_change_response(srv, fd);
|
|
break;
|
|
|
|
default:
|
|
error = SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX;
|
|
break;
|
|
}
|
|
|
|
if (error != 0)
|
|
log_err("Could not send SDP response to %s socket, " \
|
|
"pdu->pid=%d, pdu->tid=%d, error=%d",
|
|
srv->fdidx[fd].control? "control" : "L2CAP",
|
|
pdu->pid, ntohs(pdu->tid), error);
|
|
} else {
|
|
log_err("Could not process SDP request from %s socket, " \
|
|
"pdu->pid=%d, pdu->tid=%d, pdu->len=%d, len=%d, " \
|
|
"error=%d",
|
|
srv->fdidx[fd].control? "control" : "L2CAP",
|
|
pdu->pid, ntohs(pdu->tid), pdu->len, len, error);
|
|
|
|
error = server_send_error_response(srv, fd, error);
|
|
if (error != 0)
|
|
log_err("Could not send SDP error response to %s " \
|
|
"socket, pdu->pid=%d, pdu->tid=%d, error=%d",
|
|
srv->fdidx[fd].control? "control" : "L2CAP",
|
|
pdu->pid, ntohs(pdu->tid), error);
|
|
}
|
|
|
|
/* On error forget response (if any) */
|
|
if (error != 0) {
|
|
srv->fdidx[fd].rsp_cs = 0;
|
|
srv->fdidx[fd].rsp_size = 0;
|
|
srv->fdidx[fd].rsp_limit = 0;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Send SDP_Error_Response PDU
|
|
*/
|
|
|
|
static int32_t
|
|
server_send_error_response(server_p srv, int32_t fd, uint16_t error)
|
|
{
|
|
int32_t size;
|
|
|
|
struct {
|
|
sdp_pdu_t pdu;
|
|
uint16_t error;
|
|
} __attribute__ ((packed)) rsp;
|
|
|
|
/* Prepare and send SDP error response */
|
|
rsp.pdu.pid = SDP_PDU_ERROR_RESPONSE;
|
|
rsp.pdu.tid = ((sdp_pdu_p)(srv->req))->tid;
|
|
rsp.pdu.len = htons(sizeof(rsp.error));
|
|
rsp.error = htons(error);
|
|
|
|
do {
|
|
size = write(fd, &rsp, sizeof(rsp));
|
|
} while (size < 0 && errno == EINTR);
|
|
|
|
return ((size < 0)? errno : 0);
|
|
}
|
|
|
|
/*
|
|
* Close descriptor and remove it from index
|
|
*/
|
|
|
|
static void
|
|
server_close_fd(server_p srv, int32_t fd)
|
|
{
|
|
provider_p provider = NULL, provider_next = NULL;
|
|
|
|
assert(FD_ISSET(fd, &srv->fdset));
|
|
assert(srv->fdidx[fd].valid);
|
|
|
|
close(fd);
|
|
|
|
FD_CLR(fd, &srv->fdset);
|
|
if (fd == srv->maxfd)
|
|
srv->maxfd --;
|
|
|
|
if (srv->fdidx[fd].rsp != NULL)
|
|
free(srv->fdidx[fd].rsp);
|
|
|
|
memset(&srv->fdidx[fd], 0, sizeof(srv->fdidx[fd]));
|
|
|
|
for (provider = provider_get_first();
|
|
provider != NULL;
|
|
provider = provider_next) {
|
|
provider_next = provider_get_next(provider);
|
|
|
|
if (provider->fd == fd)
|
|
provider_unregister(provider);
|
|
}
|
|
}
|