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// LSOCK.cpp
// $Id$
#define ACE_BUILD_DLL
#include "ace/LSOCK.h"
#if !defined (ACE_LACKS_UNIX_DOMAIN_SOCKETS)
ACE_ALLOC_HOOK_DEFINE(ACE_LSOCK)
void
ACE_LSOCK::dump (void) const
{
ACE_TRACE ("ACE_LSOCK::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
ACE_DEBUG ((LM_DEBUG, "aux_handle_ = %d", this->aux_handle_));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
}
#if defined (ACE_HAS_MSG)
// This routine sends an open file descriptor to <this->handle_>.
int
ACE_LSOCK::send_handle (const ACE_HANDLE handle) const
{
ACE_TRACE ("ACE_LSOCK::send_handle");
unsigned char a[2];
iovec iov;
msghdr send_msg;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
char cmsgbuf[ACE_BSD_CONTROL_MSG_LEN];
cmsghdr *cmsgptr = (cmsghdr *) cmsgbuf;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
a[0] = 0xab;
a[1] = 0xcd;
iov.iov_base = (char *) a;
iov.iov_len = sizeof a;
send_msg.msg_iov = &iov;
send_msg.msg_iovlen = 1;
send_msg.msg_name = 0;
send_msg.msg_namelen = 0;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
cmsgptr->cmsg_level = SOL_SOCKET;
cmsgptr->cmsg_type = SCM_RIGHTS;
cmsgptr->cmsg_len = sizeof cmsgbuf;
send_msg.msg_control = cmsgbuf;
send_msg.msg_controllen = sizeof cmsgbuf;
*(ACE_HANDLE *) CMSG_DATA (cmsgptr) = handle;
send_msg.msg_flags = 0;
#else
send_msg.msg_accrights = (char *) &handle;
send_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
return ACE_OS::sendmsg (this->get_handle (), &send_msg, 0);
}
// This file receives an open file descriptor from <this->handle_>.
// Note, this routine returns -1 if problems occur, 0 if we recv a
// message that does not have file descriptor in it, and 1 otherwise.
int
ACE_LSOCK::recv_handle (ACE_HANDLE &handle, char *pbuf, int *len) const
{
ACE_TRACE ("ACE_LSOCK::recv_handle");
unsigned char a[2];
iovec iov;
msghdr recv_msg;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
char cmsgbuf[ACE_BSD_CONTROL_MSG_LEN];
cmsghdr *cmsgptr = (cmsghdr *) cmsgbuf;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
if (pbuf != 0 && len != 0)
{
iov.iov_base = pbuf;
iov.iov_len = *len;
}
else
{
iov.iov_base = (char *) a;
iov.iov_len = sizeof a;
}
recv_msg.msg_iov = &iov;
recv_msg.msg_iovlen = 1;
recv_msg.msg_name = 0;
recv_msg.msg_namelen = 0;
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
recv_msg.msg_control = cmsgbuf;
recv_msg.msg_controllen = sizeof cmsgbuf;
#else
recv_msg.msg_accrights = (char *) &handle;
recv_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
#if defined (ACE_HAS_STREAMS)
ssize_t nbytes = ACE_OS::recvmsg (this->get_handle (), &recv_msg, 0);
if (nbytes != ACE_INVALID_HANDLE)
{
if (len != 0)
*len = nbytes;
if (nbytes == sizeof a
&& ((unsigned char *) iov.iov_base)[0] == 0xab
&& ((unsigned char *) iov.iov_base)[1] == 0xcd)
return 1;
else
return 0;
}
#else
ssize_t nbytes = ACE_OS::recvmsg (this->get_handle (), &recv_msg, MSG_PEEK);
if (nbytes != ACE_INVALID_HANDLE)
{
if (nbytes == sizeof a
&& ((unsigned char *) iov.iov_base)[0] == 0xab
&& ((unsigned char *) iov.iov_base)[1] == 0xcd)
{
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
recv_msg.msg_control = cmsgbuf;
recv_msg.msg_controllen = sizeof cmsgbuf;
#else
recv_msg.msg_accrights = (char *) &handle;
recv_msg.msg_accrightslen = sizeof handle;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
if (ACE_OS::recvmsg (this->get_handle (),
&recv_msg, 0) == ACE_INVALID_HANDLE)
return ACE_INVALID_HANDLE;
else
{
#if defined (ACE_HAS_4_4BSD_SENDMSG_RECVMSG)
handle = *(ACE_HANDLE *) CMSG_DATA (cmsgptr) ;
#endif /* ACE_HAS_4_4BSD_SENDMSG_RECVMSG */
return 1;
}
}
else
{
if (len != 0)
*len = nbytes;
return 0;
}
}
#endif /* ACE_HAS_STREAMS */
else
return ACE_INVALID_HANDLE;
}
#endif /* ACE_HAS_MSG */
#endif /* ACE_LACKS_UNIX_DOMAIN_SOCKETS */
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