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867e6d500a
bsdsocket.library API function to determine if what appears to be a valid daemon startup message is sound. git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15052 87f5fb63-7c3d-0410-a384-fd976d0f7a62
314 lines
8.2 KiB
C
314 lines
8.2 KiB
C
/*
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* $Id: socket_init_exit.c,v 1.24 2005-10-23 09:53:39 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(SOCKET_SUPPORT)
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/****************************************************************************/
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#ifndef _SOCKET_HEADERS_H
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#include "socket_headers.h"
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#endif /* _SOCKET_HEADERS_H */
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#ifndef _SIGNAL_HEADERS_H
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#include "signal_headers.h"
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#endif /* _SIGNAL_HEADERS_H */
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/****************************************************************************/
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#ifndef _STDLIB_CONSTRUCTOR_H
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#include "stdlib_constructor.h"
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#endif /* _STDLIB_CONSTRUCTOR_H */
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/****************************************************************************/
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struct Library * NOCOMMON __SocketBase;
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/****************************************************************************/
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#if defined(__amigaos4__)
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struct SocketIFace * NOCOMMON __ISocket;
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#endif /* __amigaos4__ */
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/****************************************************************************/
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int NOCOMMON h_errno;
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/****************************************************************************/
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#if defined(__THREAD_SAFE)
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/****************************************************************************/
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/* Call-back hook for use with SBTC_ERROR_HOOK */
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struct _ErrorHookMsg
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{
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ULONG ehm_Size; /* Size of this data structure; this
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must be >= 12 */
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ULONG ehm_Action; /* See below for a list of definitions */
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LONG ehm_Code; /* The error code to use */
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};
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/* Which action the hook is to perform */
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#define EHMA_Set_errno 1 /* Set the local 'errno' to what is
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found in ehm_Code */
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#define EHMA_Set_h_errno 2 /* Set the local 'h_errno' to what is
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found in ehm_Code */
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/****************************************************************************/
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BOOL NOCOMMON __can_share_socket_library_base;
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BOOL NOCOMMON __thread_safe_errno_h_errno;
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/****************************************************************************/
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/* This hook function is called whenever either the errno or h_errno
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variable is to be changed by the bsdsocket.library code. It is invoked
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on the context of the caller, which means that the Process which called
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the library will also be the one will eventually call the hook function.
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You can key off this in your own __set_errno() or __set_h_errno()
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functions, setting a Process-specific set of variables. */
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STATIC LONG ASM
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error_hook_function(
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REG(a0, struct Hook * unused_hook),
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REG(a2, APTR unused_reserved),
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REG(a1, struct _ErrorHookMsg * ehm))
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{
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if(ehm != NULL && ehm->ehm_Size >= 12)
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{
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if (ehm->ehm_Action == EHMA_Set_errno)
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__set_errno(ehm->ehm_Code);
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else if (ehm->ehm_Action == EHMA_Set_h_errno)
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__set_h_errno(ehm->ehm_Code);
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}
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return(0);
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}
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/****************************************************************************/
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STATIC struct Hook error_hook =
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{
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{ NULL, NULL },
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(HOOKFUNC)error_hook_function,
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(HOOKFUNC)NULL,
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NULL
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};
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/****************************************************************************/
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#endif /* __THREAD_SAFE */
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/****************************************************************************/
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SOCKET_DESTRUCTOR(socket_exit)
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{
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ENTER();
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/* Disable ^C checking. */
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if(__SocketBase != NULL)
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{
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struct TagItem tags[2];
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tags[0].ti_Tag = SBTM_SETVAL(SBTC_BREAKMASK);
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tags[0].ti_Data = 0;
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tags[1].ti_Tag = TAG_END;
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PROFILE_OFF();
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__SocketBaseTagList(tags);
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PROFILE_ON();
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}
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/*
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* Careful: if this function is ever invoked, it must make sure that
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* the socket file descriptors are invalidated. If that
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* does not happen, the stdio cleanup function will
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* crash (with bells on).
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*/
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__close_all_files();
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#if defined(__amigaos4__)
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{
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if(__ISocket != NULL)
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{
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DropInterface((struct Interface *)__ISocket);
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__ISocket = NULL;
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}
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}
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#endif /* __amigaos4__ */
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if(__SocketBase != NULL)
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{
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CloseLibrary(__SocketBase);
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__SocketBase = NULL;
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}
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LEAVE();
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}
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/****************************************************************************/
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SOCKET_CONSTRUCTOR(socket_init)
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{
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struct TagItem tags[5];
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BOOL success = FALSE;
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LONG status;
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ENTER();
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PROFILE_OFF();
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/* bsdsocket.library V3 is sufficient for all the tasks we
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may have to perform. */
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__SocketBase = OpenLibrary("bsdsocket.library",3);
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#if defined(__amigaos4__)
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{
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if(__SocketBase != NULL)
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{
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__ISocket = (struct SocketIFace *)GetInterface(__SocketBase, "main", 1, 0);
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if (__ISocket == NULL)
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{
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CloseLibrary(__SocketBase);
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__SocketBase = NULL;
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}
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}
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}
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#endif /* __amigaos4__ */
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PROFILE_ON();
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if(__SocketBase == NULL)
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{
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SHOWMSG("bsdsocket.library V3 didn't open");
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__show_error("\"bsdsocket.library\" V3 could not be opened.");
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goto out;
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}
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/* Wire the library's errno variable to our local errno. */
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tags[0].ti_Tag = SBTM_SETVAL(SBTC_ERRNOLONGPTR);
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tags[0].ti_Data = (ULONG)&errno;
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/* Also enable ^C checking if desired. */
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tags[1].ti_Tag = SBTM_SETVAL(SBTC_BREAKMASK);
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if(__check_abort_enabled)
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tags[1].ti_Data = SIGBREAKF_CTRL_C;
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else
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tags[1].ti_Data = 0;
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tags[2].ti_Tag = SBTM_SETVAL(SBTC_LOGTAGPTR);
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tags[2].ti_Data = (ULONG)__program_name;
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/* Wire the library's h_errno variable to our local h_errno. */
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tags[3].ti_Tag = SBTM_SETVAL(SBTC_HERRNOLONGPTR);
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tags[3].ti_Data = (ULONG)&h_errno;
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tags[4].ti_Tag = TAG_END;
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PROFILE_OFF();
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status = __SocketBaseTagList(tags);
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PROFILE_ON();
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if(status != 0)
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{
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SHOWMSG("couldn't initialize the library");
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__show_error("\"bsdsocket.library\" could not be initialized.");
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goto out;
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}
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/* In the thread-safe library we try to enable two features which so
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far only the Roadshow TCP/IP stack supports: allow more than one
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Process to use the same bsdsocket.library base and to propagate
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changes to the errno and h_errno variable through a call-back
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hook. If either of these features are supported can be checked
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by looking at the global __can_share_socket_library_base and
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__thread_safe_errno_h_errno variables. */
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#if defined(__THREAD_SAFE)
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{
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if(__SocketBase->lib_Version >= 4)
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{
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tags[0].ti_Tag = SBTM_SETVAL(SBTC_CAN_SHARE_LIBRARY_BASES);
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tags[0].ti_Data = TRUE;
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tags[1].ti_Tag = TAG_END;
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PROFILE_OFF();
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if(__SocketBaseTagList(tags) == 0)
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__can_share_socket_library_base = TRUE;
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PROFILE_ON();
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if(__can_share_socket_library_base)
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{
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tags[0].ti_Tag = SBTM_SETVAL(SBTC_ERROR_HOOK);
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tags[0].ti_Data = (ULONG)&error_hook;
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tags[1].ti_Tag = TAG_END;
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PROFILE_OFF();
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if(__SocketBaseTagList(tags) == 0)
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__thread_safe_errno_h_errno = TRUE;
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PROFILE_ON();
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}
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}
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}
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#endif /* __THREAD_SAFE */
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/* Check if this program was launched as a server by the Internet
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superserver. */
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if(CANNOT __obtain_daemon_message())
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goto out;
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success = TRUE;
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out:
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SHOWVALUE(success);
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LEAVE();
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if(success)
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CONSTRUCTOR_SUCCEED();
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else
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CONSTRUCTOR_FAIL();
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}
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/****************************************************************************/
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#endif /* SOCKET_SUPPORT */
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