apr_status_t apr_socket_sendto(apr_socket_t *sock, apr_sockaddr_t *where,
apr_int32_t flags, const char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
do {
rv = sendto(sock->socketdes, buf, (*len), flags,
(const struct sockaddr*)&where->sa,
where->salen);
} while (rv == -1 && errno == EINTR);
while (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)
&& apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
} else {
do {
rv = sendto(sock->socketdes, buf, (*len), flags,
(const struct sockaddr*)&where->sa,
where->salen);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
*len = 0;
return errno;
}
*len = rv;
return APR_SUCCESS;
}
apr_status_t apr_socket_sendv(apr_socket_t * sock, const struct iovec *vec,
apr_int32_t nvec, apr_size_t *len)
{
apr_ssize_t rv;
apr_size_t requested_len = 0;
apr_int32_t i;
for (i = 0; i < nvec; i++) {
requested_len += vec[i].iov_len;
}
if (sock->netmask & APR_INCOMPLETE_WRITE) {
sock->netmask &= ~APR_INCOMPLETE_WRITE;
goto do_select;
}
do {
rv = writev(sock->socketdes, vec, nvec);
} while (rv == -1 && errno == EINTR);
while (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv;
do_select:
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = writev(sock->socketdes, vec, nvec);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
*len = 0;
return errno;
}
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) &&
rv < requested_len) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
(*len) = rv;
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;
}
apr_status_t apr_socket_recv(apr_socket_t *sock, char *buf, apr_size_t *len)
{
apr_ssize_t rv;
apr_status_t arv;
if (sock->netmask & APR_INCOMPLETE_READ) {
sock->netmask &= ~APR_INCOMPLETE_READ;
goto do_select;
}
do {
rv = read(sock->socketdes, buf, (*len));
} while (rv == -1 && errno == EINTR);
while (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
do_select:
arv = apr_wait_for_io_or_timeout(NULL, sock, 1);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = read(sock->socketdes, buf, (*len));
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
(*len) = 0;
return errno;
}
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) && rv < *len) {
sock->netmask |= APR_INCOMPLETE_READ;
}
(*len) = rv;
if (rv == 0) {
return APR_EOF;
}
return APR_SUCCESS;
}
apr_status_t apr_socket_send(apr_socket_t *sock, const char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
if (sock->netmask & APR_INCOMPLETE_WRITE) {
sock->netmask &= ~APR_INCOMPLETE_WRITE;
goto do_select;
}
do {
rv = write(sock->socketdes, buf, (*len));
} while (rv == -1 && errno == EINTR);
while (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)
&& apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv;
do_select:
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = write(sock->socketdes, buf, (*len));
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
*len = 0;
return errno;
}
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) && rv < *len) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
(*len) = rv;
return APR_SUCCESS;
}
apr_status_t apr_socket_opt_get(apr_socket_t *sock,
apr_int32_t opt, apr_int32_t *on)
{
switch(opt) {
case APR_SO_TIMEOUT:
/* XXX: To be deprecated */
*on = (apr_int32_t)sock->timeout;
break;
default:
*on = apr_is_option_set(sock->netmask, opt);
}
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_get(apr_socket_t *sock,
apr_int32_t opt, apr_int32_t *on)
{
socklen_t option_len = sizeof (int);
int os_error = 0;
switch(opt) {
case APR_SO_ERROR:
if (getsockopt(sock->socketdes, SOL_SOCKET, SO_ERROR,
&os_error, &option_len) < 0)
return errno;
else
*on = APR_FROM_OS_ERROR (os_error);
break;
default:
*on = apr_is_option_set(sock, opt);
}
return APR_SUCCESS;
}
apr_status_t apr_socket_recvfrom(apr_sockaddr_t *from, apr_socket_t *sock,
apr_int32_t flags, char *buf,
apr_size_t *len)
{
apr_ssize_t rv;
do {
rv = recvfrom(sock->socketdes, buf, (*len), flags,
(struct sockaddr*)&from->sa, &from->salen);
} while (rv == -1 && errno == EINTR);
while (rv == -1 && (errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv = apr_wait_for_io_or_timeout(NULL, sock, 1);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
} else {
do {
rv = recvfrom(sock->socketdes, buf, (*len), flags,
(struct sockaddr*)&from->sa, &from->salen);
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
(*len) = 0;
return errno;
}
(*len) = rv;
if (rv == 0 && sock->type == SOCK_STREAM) {
return APR_EOF;
}
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_BROADCAST:
#ifdef SO_BROADCAST
if (on != apr_is_option_set(sock, APR_SO_BROADCAST)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_BROADCAST, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(sock, APR_SO_BROADCAST, on);
}
#else
return APR_ENOTIMPL;
#endif
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;
}
/* Solaris 8's sendfilev() interface
*
* SFV_FD_SELF refers to our memory space.
*
* Required Sparc patches (or newer):
* 111297-01, 108528-09, 109472-06, 109234-03, 108995-02, 111295-01, 109025-03,
* 108991-13
* Required x86 patches (or newer):
* 111298-01, 108529-09, 109473-06, 109235-04, 108996-02, 111296-01, 109026-04,
* 108992-13
*/
apr_status_t apr_socket_sendfile(apr_socket_t *sock, apr_file_t *file,
apr_hdtr_t *hdtr, apr_off_t *offset,
apr_size_t *len, apr_int32_t flags)
{
apr_status_t rv, arv;
apr_size_t nbytes;
sendfilevec_t *sfv;
int vecs, curvec, i, repeat;
apr_size_t requested_len = 0;
if (!hdtr) {
hdtr = &no_hdtr;
}
/* Ignore flags for now. */
flags = 0;
/* Calculate how much space we need. */
vecs = hdtr->numheaders + hdtr->numtrailers + 1;
sfv = apr_palloc(sock->cntxt, sizeof(sendfilevec_t) * vecs);
curvec = 0;
/* Add the headers */
for (i = 0; i < hdtr->numheaders; i++, curvec++) {
sfv[curvec].sfv_fd = SFV_FD_SELF;
sfv[curvec].sfv_flag = 0;
sfv[curvec].sfv_off = (off_t)hdtr->headers[i].iov_base;
sfv[curvec].sfv_len = hdtr->headers[i].iov_len;
requested_len += sfv[curvec].sfv_len;
}
/* If the len is 0, we skip the file. */
if (*len)
{
sfv[curvec].sfv_fd = file->filedes;
sfv[curvec].sfv_flag = 0;
sfv[curvec].sfv_off = *offset;
sfv[curvec].sfv_len = *len;
requested_len += sfv[curvec].sfv_len;
curvec++;
}
else {
vecs--;
}
/* Add the footers */
for (i = 0; i < hdtr->numtrailers; i++, curvec++) {
sfv[curvec].sfv_fd = SFV_FD_SELF;
sfv[curvec].sfv_flag = 0;
sfv[curvec].sfv_off = (off_t)hdtr->trailers[i].iov_base;
sfv[curvec].sfv_len = hdtr->trailers[i].iov_len;
requested_len += sfv[curvec].sfv_len;
}
/* If the last write couldn't send all the requested data,
* wait for the socket to become writable before proceeding
*/
if (sock->netmask & APR_INCOMPLETE_WRITE) {
sock->netmask &= ~APR_INCOMPLETE_WRITE;
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
}
/* Actually do the sendfilev
*
* Solaris may return -1/EAGAIN even if it sent bytes on a non-block sock.
*
* If no bytes were originally sent (nbytes == 0) and we are on a TIMEOUT
* socket (which as far as the OS is concerned is a non-blocking socket),
* we want to retry after waiting for the other side to read the data (as
* determined by poll). Once it is clear to send, we want to retry
* sending the sendfilevec_t once more.
*/
arv = 0;
do {
/* Clear out the repeat */
repeat = 0;
/* socket, vecs, number of vecs, bytes written */
rv = sendfilev(sock->socketdes, sfv, vecs, &nbytes);
if (rv == -1 && errno == EAGAIN) {
if (nbytes) {
rv = 0;
}
else if (!arv &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) == 1) {
apr_status_t t = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (t != APR_SUCCESS) {
*len = 0;
return t;
}
arv = 1;
repeat = 1;
}
}
} while ((rv == -1 && errno == EINTR) || repeat);
if (rv == -1) {
*len = 0;
return errno;
}
/* Update how much we sent */
*len = nbytes;
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) &&
(*len < requested_len)) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
return APR_SUCCESS;
}
/* AIX and OS/390 have the same send_file() interface.
*
* subtle differences:
* AIX doesn't update the file ptr but OS/390 does
*
* availability (correctly determined by autoconf):
*
* AIX - version 4.3.2 with APAR IX85388, or version 4.3.3 and above
* OS/390 - V2R7 and above
*/
apr_status_t apr_socket_sendfile(apr_socket_t * sock, apr_file_t * file,
apr_hdtr_t * hdtr, apr_off_t * offset,
apr_size_t * len, apr_int32_t flags)
{
int i, ptr, rv = 0;
void * hbuf=NULL, * tbuf=NULL;
apr_status_t arv;
struct sf_parms parms;
if (!hdtr) {
hdtr = &no_hdtr;
}
/* Ignore flags for now. */
flags = 0;
/* word to the wise: by default, AIX stores files sent by send_file()
* in the network buffer cache... there are supposedly scenarios
* where the most recent copy of the file won't be sent, but I can't
* recreate the potential problem, perhaps because of the way we
* use send_file()... if you suspect such a problem, try turning
* on the SF_SYNC_CACHE flag
*/
/* AIX can also send the headers/footers as part of the system call */
parms.header_length = 0;
if (hdtr && hdtr->numheaders) {
if (hdtr->numheaders == 1) {
parms.header_data = hdtr->headers[0].iov_base;
parms.header_length = hdtr->headers[0].iov_len;
}
else {
for (i = 0; i < hdtr->numheaders; i++) {
parms.header_length += hdtr->headers[i].iov_len;
}
#if 0
/* Keepalives make apr_palloc a bad idea */
hbuf = malloc(parms.header_length);
#else
/* but headers are small, so maybe we can hold on to the
* memory for the life of the socket...
*/
hbuf = apr_palloc(sock->cntxt, parms.header_length);
#endif
ptr = 0;
for (i = 0; i < hdtr->numheaders; i++) {
memcpy((char *)hbuf + ptr, hdtr->headers[i].iov_base,
hdtr->headers[i].iov_len);
ptr += hdtr->headers[i].iov_len;
}
parms.header_data = hbuf;
}
}
else parms.header_data = NULL;
parms.trailer_length = 0;
if (hdtr && hdtr->numtrailers) {
if (hdtr->numtrailers == 1) {
parms.trailer_data = hdtr->trailers[0].iov_base;
parms.trailer_length = hdtr->trailers[0].iov_len;
}
else {
for (i = 0; i < hdtr->numtrailers; i++) {
parms.trailer_length += hdtr->trailers[i].iov_len;
}
#if 0
/* Keepalives make apr_palloc a bad idea */
tbuf = malloc(parms.trailer_length);
#else
tbuf = apr_palloc(sock->cntxt, parms.trailer_length);
#endif
ptr = 0;
for (i = 0; i < hdtr->numtrailers; i++) {
memcpy((char *)tbuf + ptr, hdtr->trailers[i].iov_base,
hdtr->trailers[i].iov_len);
ptr += hdtr->trailers[i].iov_len;
}
parms.trailer_data = tbuf;
}
}
else {
parms.trailer_data = NULL;
}
/* Whew! Headers and trailers set up. Now for the file data */
parms.file_descriptor = file->filedes;
parms.file_offset = *offset;
parms.file_bytes = *len;
/* O.K. All set up now. Let's go to town */
if (sock->netmask & APR_INCOMPLETE_WRITE) {
sock->netmask &= ~APR_INCOMPLETE_WRITE;
goto do_select;
}
do {
rv = send_file(&(sock->socketdes), /* socket */
&(parms), /* all data */
flags); /* flags */
} while (rv == -1 && errno == EINTR);
while (rv == -1 &&
(errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
do_select:
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = send_file(&(sock->socketdes), /* socket */
&(parms), /* all data */
flags); /* flags */
} while (rv == -1 && errno == EINTR);
}
}
(*len) = parms.bytes_sent;
#if 0
/* Clean up after ourselves */
if(hbuf) free(hbuf);
if(tbuf) free(tbuf);
#endif
if (rv == -1) {
return errno;
}
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT) &&
(parms.bytes_sent < (parms.file_bytes + parms.header_length + parms.trailer_length))) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
return APR_SUCCESS;
}
apr_status_t apr_socket_sendfile(apr_socket_t *sock, apr_file_t *file,
apr_hdtr_t *hdtr, apr_off_t *offset,
apr_size_t *len, apr_int32_t flags)
{
int i;
apr_ssize_t rc;
apr_size_t nbytes = *len, headerlen, trailerlen;
struct iovec hdtrarray[2];
char *headerbuf, *trailerbuf;
if (!hdtr) {
hdtr = &no_hdtr;
}
/* Ignore flags for now. */
flags = 0;
/* HP-UX can only send one header iovec and one footer iovec; try to
* only allocate storage to combine input iovecs when we really have to
*/
switch(hdtr->numheaders) {
case 0:
hdtrarray[0].iov_base = NULL;
hdtrarray[0].iov_len = 0;
break;
case 1:
hdtrarray[0] = hdtr->headers[0];
break;
default:
headerlen = 0;
for (i = 0; i < hdtr->numheaders; i++) {
headerlen += hdtr->headers[i].iov_len;
}
/* XXX: BUHHH? wow, what a memory leak! */
headerbuf = hdtrarray[0].iov_base = apr_palloc(sock->cntxt, headerlen);
hdtrarray[0].iov_len = headerlen;
for (i = 0; i < hdtr->numheaders; i++) {
memcpy(headerbuf, hdtr->headers[i].iov_base,
hdtr->headers[i].iov_len);
headerbuf += hdtr->headers[i].iov_len;
}
}
switch(hdtr->numtrailers) {
case 0:
hdtrarray[1].iov_base = NULL;
hdtrarray[1].iov_len = 0;
break;
case 1:
hdtrarray[1] = hdtr->trailers[0];
break;
default:
trailerlen = 0;
for (i = 0; i < hdtr->numtrailers; i++) {
trailerlen += hdtr->trailers[i].iov_len;
}
/* XXX: BUHHH? wow, what a memory leak! */
trailerbuf = hdtrarray[1].iov_base = apr_palloc(sock->cntxt, trailerlen);
hdtrarray[1].iov_len = trailerlen;
for (i = 0; i < hdtr->numtrailers; i++) {
memcpy(trailerbuf, hdtr->trailers[i].iov_base,
hdtr->trailers[i].iov_len);
trailerbuf += hdtr->trailers[i].iov_len;
}
}
do {
if (nbytes) { /* any bytes to send from the file? */
rc = sendfile(sock->socketdes, /* socket */
file->filedes, /* file descriptor to send */
*offset, /* where in the file to start */
nbytes, /* number of bytes to send from file */
hdtrarray, /* Headers/footers */
flags); /* undefined, set to 0 */
}
else { /* we can't call sendfile() with no bytes to send from the file */
rc = writev(sock->socketdes, hdtrarray, 2);
}
} while (rc == -1 && errno == EINTR);
while (rc == -1 &&
(errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
if (nbytes) {
rc = sendfile(sock->socketdes, /* socket */
file->filedes, /* file descriptor to send */
*offset, /* where in the file to start */
nbytes, /* number of bytes to send from file */
hdtrarray, /* Headers/footers */
flags); /* undefined, set to 0 */
}
else { /* we can't call sendfile() with no bytes to send from the file */
rc = writev(sock->socketdes, hdtrarray, 2);
}
} while (rc == -1 && errno == EINTR);
}
}
if (rc == -1) {
*len = 0;
return errno;
}
/* Set len to the number of bytes written */
*len = rc;
return APR_SUCCESS;
}
/* Release 3.1 or greater */
apr_status_t apr_socket_sendfile(apr_socket_t * sock, apr_file_t * file,
apr_hdtr_t * hdtr, apr_off_t * offset,
apr_size_t * len, apr_int32_t flags)
{
off_t nbytes = 0;
int rv, i;
struct sf_hdtr headerstruct;
apr_size_t bytes_to_send = *len;
/* Ignore flags for now. */
flags = 0;
if (!hdtr) {
hdtr = &no_hdtr;
}
else if (hdtr->numheaders && include_hdrs_in_length()) {
/* On early versions of FreeBSD sendfile, the number of bytes to send
* must include the length of the headers. Don't look at the man page
* for this :( Instead, look at the the logic in
* src/sys/kern/uipc_syscalls::sendfile().
*
* This was fixed in the middle of 4.6-STABLE
*/
for (i = 0; i < hdtr->numheaders; i++) {
bytes_to_send += hdtr->headers[i].iov_len;
}
}
headerstruct.headers = hdtr->headers;
headerstruct.hdr_cnt = hdtr->numheaders;
headerstruct.trailers = hdtr->trailers;
headerstruct.trl_cnt = hdtr->numtrailers;
/* FreeBSD can send the headers/footers as part of the system call */
do {
if (sock->netmask & APR_INCOMPLETE_WRITE) {
apr_status_t arv;
sock->netmask &= ~APR_INCOMPLETE_WRITE;
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
}
if (bytes_to_send) {
/* We won't dare call sendfile() if we don't have
* header or file bytes to send because bytes_to_send == 0
* means send the whole file.
*/
rv = sendfile(file->filedes, /* file to be sent */
sock->socketdes, /* socket */
*offset, /* where in the file to start */
bytes_to_send, /* number of bytes to send */
&headerstruct, /* Headers/footers */
&nbytes, /* number of bytes written */
flags); /* undefined, set to 0 */
if (rv == -1) {
if (errno == EAGAIN) {
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
/* FreeBSD's sendfile can return -1/EAGAIN even if it
* sent bytes. Sanitize the result so we get normal EAGAIN
* semantics w.r.t. bytes sent.
*/
if (nbytes) {
/* normal exit for a big file & non-blocking io */
(*len) = nbytes;
return APR_SUCCESS;
}
}
}
else { /* rv == 0 (or the kernel is broken) */
if (nbytes == 0) {
/* Most likely the file got smaller after the stat.
* Return an error so the caller can do the Right Thing.
*/
(*len) = nbytes;
return APR_EOF;
}
}
}
else {
/* just trailer bytes... use writev()
*/
rv = writev(sock->socketdes,
hdtr->trailers,
hdtr->numtrailers);
if (rv > 0) {
nbytes = rv;
rv = 0;
}
else {
nbytes = 0;
}
}
if (rv == -1 &&
errno == EAGAIN &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
apr_status_t arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
}
} while (rv == -1 && (errno == EINTR || errno == EAGAIN));
(*len) = nbytes;
if (rv == -1) {
return errno;
}
return APR_SUCCESS;
}
apr_status_t apr_socket_sendfile(apr_socket_t *sock, apr_file_t *file,
apr_hdtr_t *hdtr, apr_off_t *offset,
apr_size_t *len, apr_int32_t flags)
{
off_t off = *offset;
int rv, nbytes = 0, total_hdrbytes, i;
apr_status_t arv;
if (!hdtr) {
hdtr = &no_hdtr;
}
/* Ignore flags for now. */
flags = 0;
if (hdtr->numheaders > 0) {
apr_size_t hdrbytes;
/* cork before writing headers */
rv = apr_socket_opt_set(sock, APR_TCP_NOPUSH, 1);
if (rv != APR_SUCCESS) {
return rv;
}
/* Now write the headers */
arv = apr_socket_sendv(sock, hdtr->headers, hdtr->numheaders,
&hdrbytes);
if (arv != APR_SUCCESS) {
*len = 0;
return errno;
}
nbytes += hdrbytes;
/* If this was a partial write and we aren't doing timeouts,
* return now with the partial byte count; this is a non-blocking
* socket.
*/
total_hdrbytes = 0;
for (i = 0; i < hdtr->numheaders; i++) {
total_hdrbytes += hdtr->headers[i].iov_len;
}
if (hdrbytes < total_hdrbytes) {
*len = hdrbytes;
return apr_socket_opt_set(sock, APR_TCP_NOPUSH, 0);
}
}
if (sock->netmask & APR_INCOMPLETE_WRITE) {
sock->netmask &= ~APR_INCOMPLETE_WRITE;
goto do_select;
}
do {
rv = sendfile(sock->socketdes, /* socket */
file->filedes, /* open file descriptor of the file to be sent */
&off, /* where in the file to start */
*len); /* number of bytes to send */
} while (rv == -1 && errno == EINTR);
while (rv == -1 &&
(errno == EAGAIN || errno == EWOULDBLOCK) &&
apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
do_select:
arv = apr_wait_for_io_or_timeout(NULL, sock, 0);
if (arv != APR_SUCCESS) {
*len = 0;
return arv;
}
else {
do {
rv = sendfile(sock->socketdes, /* socket */
file->filedes, /* open file descriptor of the file to be sent */
&off, /* where in the file to start */
*len); /* number of bytes to send */
} while (rv == -1 && errno == EINTR);
}
}
if (rv == -1) {
*len = nbytes;
rv = errno;
apr_socket_opt_set(sock, APR_TCP_NOPUSH, 0);
return rv;
}
nbytes += rv;
if (rv < *len) {
*len = nbytes;
arv = apr_socket_opt_set(sock, APR_TCP_NOPUSH, 0);
if (rv > 0) {
/* If this was a partial write, return now with the
* partial byte count; this is a non-blocking socket.
*/
if (apr_is_option_set(sock->netmask, APR_SO_TIMEOUT)) {
sock->netmask |= APR_INCOMPLETE_WRITE;
}
return arv;
}
else {
/* If the file got smaller mid-request, eventually the offset
* becomes equal to the new file size and the kernel returns 0.
* Make this an error so the caller knows to log something and
* exit.
*/
return APR_EOF;
}
}
/* Now write the footers */
if (hdtr->numtrailers > 0) {
apr_size_t trbytes;
arv = apr_socket_sendv(sock, hdtr->trailers, hdtr->numtrailers,
&trbytes);
nbytes += trbytes;
if (arv != APR_SUCCESS) {
*len = nbytes;
rv = errno;
apr_socket_opt_set(sock, APR_TCP_NOPUSH, 0);
return rv;
}
}
apr_socket_opt_set(sock, APR_TCP_NOPUSH, 0);
(*len) = nbytes;
return rv < 0 ? errno : 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->netmask, APR_SO_KEEPALIVE)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_KEEPALIVE, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(&sock->netmask,APR_SO_KEEPALIVE, on);
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_SO_DEBUG:
if (on != apr_is_option_set(sock->netmask, APR_SO_DEBUG)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_DEBUG, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(&sock->netmask, APR_SO_DEBUG, on);
}
break;
case APR_SO_REUSEADDR:
if (on != apr_is_option_set(sock->netmask, APR_SO_REUSEADDR)) {
if (setsockopt(sock->socketdes, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(int)) == -1) {
return errno;
}
apr_set_option(&sock->netmask, 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->netmask, 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->netmask, APR_SO_NONBLOCK, on);
}
break;
case APR_SO_LINGER:
#ifdef SO_LINGER
if (apr_is_option_set(sock->netmask, 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->netmask, APR_SO_LINGER, on);
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_SO_TIMEOUT:
/* XXX: To be deprecated */
return apr_socket_timeout_set(sock, on);
break;
case APR_TCP_NODELAY:
#if defined(TCP_NODELAY)
if (apr_is_option_set(sock->netmask, 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->netmask, 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
if (apr_is_option_set(sock->netmask, APR_TCP_NOPUSH) != 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
/* OK we're going to change some settings here... */
/* TCP_NODELAY is mutually exclusive, so do we have it set? */
if (apr_is_option_set(sock->netmask, APR_TCP_NODELAY) == 1 && on) {
/* If we want to set NOPUSH then if we have the TCP_NODELAY
* flag set we need to switch it off...
*/
int tmpflag = 0;
if (setsockopt(sock->socketdes, optlevel, optname,
(void*)&tmpflag, sizeof(int)) == -1) {
return errno;
}
apr_set_option(&sock->netmask, APR_RESET_NODELAY, 1);
apr_set_option(&sock->netmask, APR_TCP_NODELAY, 0);
} else if (on) {
apr_set_option(&sock->netmask, APR_RESET_NODELAY, 0);
}
/* 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->netmask, APR_TCP_NOPUSH, on);
if (!on && apr_is_option_set(sock->netmask, APR_RESET_NODELAY)) {
int tmpflag = 1;
if (setsockopt(sock->socketdes, optlevel, optname,
(void*)&tmpflag, sizeof(int)) == -1) {
return errno;
}
apr_set_option(&sock->netmask, APR_RESET_NODELAY,0);
apr_set_option(&sock->netmask, APR_TCP_NODELAY, 1);
}
}
#else
return APR_ENOTIMPL;
#endif
break;
case APR_INCOMPLETE_READ:
apr_set_option(&sock->netmask, 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->netmask 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->netmask, APR_IPV6_V6ONLY, on);
#else
return APR_ENOTIMPL;
#endif
break;
default:
return APR_EINVAL;
}
return APR_SUCCESS;
}