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freeswitch/libs/apr/network_io/unix/sockopt.c

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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 "apr_arch_networkio.h"
#include "apr_strings.h"
static apr_status_t soblock(int sd)
{
/* BeOS uses setsockopt at present for non blocking... */
#ifndef BEOS
int fd_flags;
fd_flags = fcntl(sd, F_GETFL, 0);
#if defined(O_NONBLOCK)
fd_flags &= ~O_NONBLOCK;
#elif defined(O_NDELAY)
fd_flags &= ~O_NDELAY;
#elif defined(FNDELAY)
fd_flags &= ~FNDELAY;
#else
#error Please teach APR how to make sockets blocking on your platform.
#endif
if (fcntl(sd, F_SETFL, fd_flags) == -1) {
return errno;
}
#else
int on = 0;
if (setsockopt(sd, SOL_SOCKET, SO_NONBLOCK, &on, sizeof(int)) < 0)
return errno;
#endif /* BEOS */
return APR_SUCCESS;
}
static apr_status_t sononblock(int sd)
{
#ifndef BEOS
int fd_flags;
fd_flags = fcntl(sd, F_GETFL, 0);
#if defined(O_NONBLOCK)
fd_flags |= O_NONBLOCK;
#elif defined(O_NDELAY)
fd_flags |= O_NDELAY;
#elif defined(FNDELAY)
fd_flags |= FNDELAY;
#else
#error Please teach APR how to make sockets non-blocking on your platform.
#endif
if (fcntl(sd, F_SETFL, fd_flags) == -1) {
return errno;
}
#else
int on = 1;
if (setsockopt(sd, SOL_SOCKET, SO_NONBLOCK, &on, sizeof(int)) < 0)
return errno;
#endif /* BEOS */
return APR_SUCCESS;
}
apr_status_t apr_socket_timeout_set(apr_socket_t *sock, apr_interval_time_t t)
{
apr_status_t stat;
/* If our new timeout is non-negative and our old timeout was
* negative, then we need to ensure that we are non-blocking.
* Conversely, if our new timeout is negative and we had
* non-negative timeout, we must make sure our socket is blocking.
* We want to avoid calling fcntl more than necessary on the
* socket.
*/
if (t >= 0 && sock->timeout < 0) {
if (apr_is_option_set(sock, APR_SO_NONBLOCK) != 1) {
if ((stat = sononblock(sock->socketdes)) != APR_SUCCESS) {
return stat;
}
apr_set_option(sock, APR_SO_NONBLOCK, 1);
}
}
else if (t < 0 && sock->timeout >= 0) {
if (apr_is_option_set(sock, APR_SO_NONBLOCK) != 0) {
if ((stat = soblock(sock->socketdes)) != APR_SUCCESS) {
return stat;
}
apr_set_option(sock, APR_SO_NONBLOCK, 0);
}
}
/* must disable the incomplete read support if we disable
* a timeout
*/
if (t <= 0) {
sock->options &= ~APR_INCOMPLETE_READ;
}
sock->timeout = t;
return APR_SUCCESS;
}
apr_status_t apr_socket_opt_set(apr_socket_t *sock,
apr_int32_t opt, apr_int32_t on)
{
int one;
apr_status_t rv;
if (on)
one = 1;
else
one = 0;
switch(opt) {
case APR_SO_KEEPALIVE:
#ifdef SO_KEEPALIVE
if (on != apr_is_option_set(sock, APR_SO_KEEPALIVE)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_KEEPALIVE, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_SO_KEEPALIVE, on);
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_SO_DEBUG:
if (on != apr_is_option_set(sock, APR_SO_DEBUG)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_DEBUG, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_SO_DEBUG, on);
}
break;
case APR_SO_REUSEADDR:
if (on != apr_is_option_set(sock, APR_SO_REUSEADDR)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_SO_REUSEADDR, on);
}
break;
case APR_SO_SNDBUF:
#ifdef SO_SNDBUF
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_SNDBUF, (void *)&on, sizeof(int)) == -1) {
return errno;
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_SO_RCVBUF:
#ifdef SO_RCVBUF
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_RCVBUF, (void *)&on, sizeof(int)) == -1) {
return errno;
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_SO_NONBLOCK:
if (apr_is_option_set(sock, APR_SO_NONBLOCK) != on) {
if (on) {
if ((rv = sononblock(sock->socketdes)) != APR_SUCCESS)
return rv;
}
else {
if ((rv = soblock(sock->socketdes)) != APR_SUCCESS)
return rv;
}
apr_set_option(sock, APR_SO_NONBLOCK, on);
}
break;
case APR_SO_LINGER:
#ifdef SO_LINGER
if (apr_is_option_set(sock, APR_SO_LINGER) != on) {
struct linger li;
li.l_onoff = on;
li.l_linger = APR_MAX_SECS_TO_LINGER;
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_LINGER, (char *) &li, sizeof(struct linger)) == -1) {
return errno;
}
apr_set_option(sock, APR_SO_LINGER, on);
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_TCP_DEFER_ACCEPT:
#if defined(TCP_DEFER_ACCEPT)
if (apr_is_option_set(sock, APR_TCP_DEFER_ACCEPT) != on) {
int optlevel = IPPROTO_TCP;
int optname = TCP_DEFER_ACCEPT;
if (setsockopt(sock->socketdes, optlevel, optname,
(void *)&on, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_TCP_DEFER_ACCEPT, on);
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_TCP_NODELAY:
#if defined(TCP_NODELAY)
if (apr_is_option_set(sock, APR_TCP_NODELAY) != on) {
int optlevel = IPPROTO_TCP;
int optname = TCP_NODELAY;
#if APR_HAVE_SCTP
if (sock->protocol == IPPROTO_SCTP) {
optlevel = IPPROTO_SCTP;
optname = SCTP_NODELAY;
}
#endif
if (setsockopt(sock->socketdes, optlevel, optname, (void *)&on, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_TCP_NODELAY, on);
}
#else
/* BeOS pre-BONE has TCP_NODELAY set by default.
* As it can't be turned off we might as well check if they're asking
* for it to be turned on!
*/
#ifdef BEOS
if (on == 1)
return APR_SUCCESS;
else
#endif
return APR_ENOTIMPL;
#endif
break;
case APR_TCP_NOPUSH:
#if APR_TCP_NOPUSH_FLAG
/* TCP_NODELAY and TCP_CORK are mutually exclusive on Linux
* kernels < 2.6; on newer kernels they can be used together
* and TCP_CORK takes preference, which is the desired
* behaviour. On older kernels, TCP_NODELAY must be toggled
* to "off" whilst TCP_CORK is in effect. */
if (apr_is_option_set(sock, APR_TCP_NOPUSH) != on) {
#ifndef HAVE_TCP_NODELAY_WITH_CORK
int optlevel = IPPROTO_TCP;
int optname = TCP_NODELAY;
#if APR_HAVE_SCTP
if (sock->protocol == IPPROTO_SCTP) {
optlevel = IPPROTO_SCTP;
optname = SCTP_NODELAY;
}
#endif
/* OK we're going to change some settings here... */
if (apr_is_option_set(sock, APR_TCP_NODELAY) == 1 && on) {
/* Now toggle TCP_NODELAY to off, if TCP_CORK is being
* turned on: */
int tmpflag = 0;
if (setsockopt(sock->socketdes, optlevel, optname,
(void*)&tmpflag, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_RESET_NODELAY, 1);
apr_set_option(sock, APR_TCP_NODELAY, 0);
} else if (on) {
apr_set_option(sock, APR_RESET_NODELAY, 0);
}
#endif /* HAVE_TCP_NODELAY_WITH_CORK */
/* OK, now we can just set the TCP_NOPUSH flag accordingly...*/
if (setsockopt(sock->socketdes, IPPROTO_TCP, APR_TCP_NOPUSH_FLAG,
(void*)&on, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_TCP_NOPUSH, on);
#ifndef HAVE_TCP_NODELAY_WITH_CORK
if (!on && apr_is_option_set(sock, APR_RESET_NODELAY)) {
/* Now, if TCP_CORK was just turned off, turn
* TCP_NODELAY back on again if it was earlier toggled
* to off: */
int tmpflag = 1;
if (setsockopt(sock->socketdes, optlevel, optname,
(void*)&tmpflag, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_RESET_NODELAY,0);
apr_set_option(sock, APR_TCP_NODELAY, 1);
}
#endif /* HAVE_TCP_NODELAY_WITH_CORK */
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_INCOMPLETE_READ:
apr_set_option(sock, APR_INCOMPLETE_READ, on);
break;
case APR_IPV6_V6ONLY:
#if APR_HAVE_IPV6 && defined(IPV6_V6ONLY)
/* we don't know the initial setting of this option,
* so don't check sock->options since that optimization
* won't work
*/
if (setsockopt(sock->socketdes, IPPROTO_IPV6, IPV6_V6ONLY,
(void *)&on, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_IPV6_V6ONLY, on);
#else
return APR_ENOTIMPL;
#endif
break;
default:
return APR_EINVAL;
}
return APR_SUCCESS;
}
apr_status_t apr_socket_timeout_get(apr_socket_t *sock, apr_interval_time_t *t)
{
*t = sock->timeout;
return APR_SUCCESS;
}
apr_status_t apr_socket_opt_get(apr_socket_t *sock,
apr_int32_t opt, apr_int32_t *on)
{
switch(opt) {
default:
*on = apr_is_option_set(sock, opt);
}
return APR_SUCCESS;
}
int apr_socket_fd_get(apr_socket_t *sock)
{
if (sock) {
return sock->socketdes;
} else {
return 0;
}
}
apr_status_t apr_socket_atmark(apr_socket_t *sock, int *atmark)
{
#ifndef BEOS_R5
int oobmark;
if (ioctl(sock->socketdes, SIOCATMARK, (void*) &oobmark) < 0)
return apr_get_netos_error();
*atmark = (oobmark != 0);
return APR_SUCCESS;
#else /* BEOS_R5 */
return APR_ENOTIMPL;
#endif
}
apr_status_t apr_gethostname(char *buf, apr_int32_t len, apr_pool_t *cont)
{
#ifdef BEOS_R5
if (gethostname(buf, len) == 0) {
#else
if (gethostname(buf, len) != 0) {
#endif
buf[0] = '\0';
return errno;
}
else if (!memchr(buf, '\0', len)) { /* buffer too small */
/* note... most platforms just truncate in this condition
* linux+glibc return an error
*/
buf[0] = '\0';
return APR_ENAMETOOLONG;
}
return APR_SUCCESS;
}
#if APR_HAS_SO_ACCEPTFILTER
apr_status_t apr_socket_accept_filter(apr_socket_t *sock, char *name,
char *args)
{
struct accept_filter_arg af;
strncpy(af.af_name, name, 16);
strncpy(af.af_arg, args, 256 - 16);
if ((setsockopt(sock->socketdes, SOL_SOCKET, SO_ACCEPTFILTER,
&af, sizeof(af))) < 0) {
return errno;
}
return APR_SUCCESS;
}
#endif
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