427 lines
23 KiB
Nim
427 lines
23 KiB
Nim
#******************************************************************************
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#
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# $Id: sdl_net.pas,v 1.7 2005/01/01 02:14:21 savage Exp $
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#
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#
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#
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# Borland Delphi SDL_Net - A x-platform network library for use with SDL.
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# Conversion of the Simple DirectMedia Layer Network Headers
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#
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# Portions created by Sam Lantinga <slouken@devolution.com> are
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# Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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# 5635-34 Springhouse Dr.
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# Pleasanton, CA 94588 (USA)
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#
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# All Rights Reserved.
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#
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# The original files are : SDL_net.h
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#
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# The initial developer of this Pascal code was :
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# Dominqiue Louis <Dominique@SavageSoftware.com.au>
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#
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# Portions created by Dominqiue Louis are
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# Copyright (C) 2000 - 2001 Dominqiue Louis.
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#
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#
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# Contributor(s)
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# --------------
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# Matthias Thoma <ma.thoma@gmx.de>
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#
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# Obtained through:
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# Joint Endeavour of Delphi Innovators ( Project JEDI )
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#
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# You may retrieve the latest version of this file at the Project
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# JEDI home page, located at http://delphi-jedi.org
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#
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# The contents of this file are used with permission, subject to
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# the Mozilla Public License Version 1.1 (the "License"); you may
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# not use this file except in compliance with the License. You may
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# obtain a copy of the License at
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# http://www.mozilla.org/MPL/MPL-1.1.html
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#
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# Software distributed under the License is distributed on an
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# "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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# implied. See the License for the specific language governing
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# rights and limitations under the License.
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#
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# Description
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# -----------
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#
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#
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#
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#
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#
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#
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#
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# Requires
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# --------
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# SDL.pas somehere in your search path
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#
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# Programming Notes
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# -----------------
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#
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#
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#
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#
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# Revision History
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# ----------------
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# April 09 2001 - DL : Initial Translation
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#
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# April 03 2003 - DL : Added jedi-sdl.inc include file to support more
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# Pascal compilers. Initial support is now included
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# for GnuPascal, VirtualPascal, TMT and obviously
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# continue support for Delphi Kylix and FreePascal.
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#
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# April 24 2003 - DL : under instruction from Alexey Barkovoy, I have added
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# better TMT Pascal support and under instruction
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# from Prof. Abimbola Olowofoyeku (The African Chief),
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# I have added better Gnu Pascal support
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#
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# April 30 2003 - DL : under instruction from David Mears AKA
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# Jason Siletto, I have added FPC Linux support.
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# This was compiled with fpc 1.1, so remember to set
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# include file path. ie. -Fi/usr/share/fpcsrc/rtl/*
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#
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#
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# $Log: sdl_net.pas,v $
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# Revision 1.7 2005/01/01 02:14:21 savage
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# Updated to v1.2.5
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#
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# Revision 1.6 2004/08/14 22:54:30 savage
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# Updated so that Library name defines are correctly defined for MacOS X.
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#
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# Revision 1.5 2004/05/10 14:10:04 savage
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# Initial MacOS X support. Fixed defines for MACOS ( Classic ) and DARWIN ( MacOS X ).
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#
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# Revision 1.4 2004/04/13 09:32:08 savage
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# Changed Shared object names back to just the .so extension to avoid conflicts on various Linux/Unix distros. Therefore developers will need to create Symbolic links to the actual Share Objects if necessary.
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#
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# Revision 1.3 2004/04/01 20:53:23 savage
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# Changed Linux Shared Object names so they reflect the Symbolic Links that are created when installing the RPMs from the SDL site.
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#
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# Revision 1.2 2004/03/30 20:23:28 savage
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# Tidied up use of UNIX compiler directive.
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#
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# Revision 1.1 2004/02/16 22:16:40 savage
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# v1.0 changes
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#
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#
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#
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#******************************************************************************
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import
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sdl
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when defined(windows):
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const
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NetLibName = "SDL_net.dll"
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elif defined(macosx):
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const
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NetLibName = "libSDL_net.dylib"
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else:
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const
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NetLibName = "libSDL_net.so"
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const #* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL *
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MAJOR_VERSION* = 1
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MINOR_VERSION* = 2
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PATCHLEVEL* = 5 # SDL_Net.h constants
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#* Resolve a host name and port to an IP address in network form.
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# If the function succeeds, it will return 0.
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# If the host couldn't be resolved, the host portion of the returned
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# address will be INADDR_NONE, and the function will return -1.
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# If 'host' is NULL, the resolved host will be set to INADDR_ANY.
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# *
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INADDR_ANY* = 0x00000000
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INADDR_NONE* = 0xFFFFFFFF #***********************************************************************
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#* UDP network API *
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#***********************************************************************
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#* The maximum channels on a a UDP socket *
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MAX_UDPCHANNELS* = 32 #* The maximum addresses bound to a single UDP socket channel *
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MAX_UDPADDRESSES* = 4
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type # SDL_net.h types
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#***********************************************************************
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#* IPv4 hostname resolution API *
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#***********************************************************************
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PIPAddress* = ptr TIPAddress
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TIPAddress*{.final.} = object #* TCP network API
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host*: Uint32 # 32-bit IPv4 host address */
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port*: Uint16 # 16-bit protocol port */
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PTCPSocket* = ptr TTCPSocket
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TTCPSocket*{.final.} = object # UDP network API
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ready*: int
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channel*: int
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remoteAddress*: TIPaddress
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localAddress*: TIPaddress
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sflag*: int
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PUDP_Channel* = ptr TUDP_Channel
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TUDP_Channel*{.final.} = object
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numbound*: int
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address*: array[0..MAX_UDPADDRESSES - 1, TIPAddress]
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PUDPSocket* = ptr TUDPSocket
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TUDPSocket*{.final.} = object
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ready*: int
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channel*: int
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address*: TIPAddress
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binding*: array[0..MAX_UDPCHANNELS - 1, TUDP_Channel]
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PUDPpacket* = ptr TUDPpacket
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PPUDPpacket* = ptr PUDPpacket
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TUDPpacket*{.final.} = object #***********************************************************************
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#* Hooks for checking sockets for available data *
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#***********************************************************************
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channel*: int #* The src/dst channel of the packet *
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data*: pointer #* The packet data *
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length*: int #* The length of the packet data *
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maxlen*: int #* The size of the data buffer *
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status*: int #* packet status after sending *
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address*: TIPAddress #* The source/dest address of an incoming/outgoing packet *
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PSocket* = ptr TSocket
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TSocket*{.final.} = object
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ready*: int
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channel*: int
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PSocketSet* = ptr TSocketSet
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TSocketSet*{.final.} = object # Any network socket can be safely cast to this socket type *
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numsockets*: int
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maxsockets*: int
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sockets*: PSocket
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PGenericSocket* = ptr TGenericSocket
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TGenericSocket*{.final.} = object
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ready*: int
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proc VERSION*(X: var Tversion)
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#* Initialize/Cleanup the network API
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# SDL must be initialized before calls to functions in this library,
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# because this library uses utility functions from the SDL library.
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#*
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proc Init*(): int{.cdecl, importc: "SDLNet_Init", dynlib: NetLibName.}
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proc Quit*(){.cdecl, importc: "SDLNet_Quit", dynlib: NetLibName.}
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#* Resolve a host name and port to an IP address in network form.
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# If the function succeeds, it will return 0.
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# If the host couldn't be resolved, the host portion of the returned
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# address will be INADDR_NONE, and the function will return -1.
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# If 'host' is NULL, the resolved host will be set to INADDR_ANY.
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# *
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proc ResolveHost*(address: var TIPaddress, host: cstring, port: Uint16): int{.
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cdecl, importc: "SDLNet_ResolveHost", dynlib: NetLibName.}
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#* Resolve an ip address to a host name in canonical form.
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# If the ip couldn't be resolved, this function returns NULL,
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# otherwise a pointer to a static buffer containing the hostname
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# is returned. Note that this function is not thread-safe.
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#*
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proc ResolveIP*(ip: var TIPaddress): cstring{.cdecl,
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importc: "SDLNet_ResolveIP", dynlib: NetLibName.}
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#***********************************************************************
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#* TCP network API *
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#***********************************************************************
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#* Open a TCP network socket
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# If ip.host is INADDR_NONE, this creates a local server socket on the
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# given port, otherwise a TCP connection to the remote host and port is
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# attempted. The address passed in should already be swapped to network
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# byte order (addresses returned from SDLNet_ResolveHost() are already
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# in the correct form).
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# The newly created socket is returned, or NULL if there was an error.
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#*
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proc TCP_Open*(ip: var TIPaddress): PTCPSocket{.cdecl,
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importc: "SDLNet_TCP_Open", dynlib: NetLibName.}
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#* Accept an incoming connection on the given server socket.
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# The newly created socket is returned, or NULL if there was an error.
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#*
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proc TCP_Accept*(server: PTCPsocket): PTCPSocket{.cdecl,
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importc: "SDLNet_TCP_Accept", dynlib: NetLibName.}
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#* Get the IP address of the remote system associated with the socket.
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# If the socket is a server socket, this function returns NULL.
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#*
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proc TCP_GetPeerAddress*(sock: PTCPsocket): PIPAddress{.cdecl,
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importc: "SDLNet_TCP_GetPeerAddress", dynlib: NetLibName.}
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#* Send 'len' bytes of 'data' over the non-server socket 'sock'
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# This function returns the actual amount of data sent. If the return value
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# is less than the amount of data sent, then either the remote connection was
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# closed, or an unknown socket error occurred.
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#*
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proc TCP_Send*(sock: PTCPsocket, data: Pointer, length: int): int{.cdecl,
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importc: "SDLNet_TCP_Send", dynlib: NetLibName.}
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#* Receive up to 'maxlen' bytes of data over the non-server socket 'sock',
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# and store them in the buffer pointed to by 'data'.
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# This function returns the actual amount of data received. If the return
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# value is less than or equal to zero, then either the remote connection was
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# closed, or an unknown socket error occurred.
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#*
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proc TCP_Recv*(sock: PTCPsocket, data: Pointer, maxlen: int): int{.cdecl,
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importc: "SDLNet_TCP_Recv", dynlib: NetLibName.}
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#* Close a TCP network socket *
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proc TCP_Close*(sock: PTCPsocket){.cdecl, importc: "SDLNet_TCP_Close",
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dynlib: NetLibName.}
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#***********************************************************************
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#* UDP network API *
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#***********************************************************************
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#* Allocate/resize/free a single UDP packet 'size' bytes long.
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# The new packet is returned, or NULL if the function ran out of memory.
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# *
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proc AllocPacket*(size: int): PUDPpacket{.cdecl,
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importc: "SDLNet_AllocPacket", dynlib: NetLibName.}
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proc ResizePacket*(packet: PUDPpacket, newsize: int): int{.cdecl,
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importc: "SDLNet_ResizePacket", dynlib: NetLibName.}
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proc FreePacket*(packet: PUDPpacket){.cdecl, importc: "SDLNet_FreePacket",
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dynlib: NetLibName.}
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#* Allocate/Free a UDP packet vector (array of packets) of 'howmany' packets,
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# each 'size' bytes long.
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# A pointer to the first packet in the array is returned, or NULL if the
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# function ran out of memory.
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# *
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proc AllocPacketV*(howmany: int, size: int): PUDPpacket{.cdecl,
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importc: "SDLNet_AllocPacketV", dynlib: NetLibName.}
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proc FreePacketV*(packetV: PUDPpacket){.cdecl,
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importc: "SDLNet_FreePacketV", dynlib: NetLibName.}
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#* Open a UDP network socket
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# If 'port' is non-zero, the UDP socket is bound to a local port.
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# This allows other systems to send to this socket via a known port.
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#*
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proc UDP_Open*(port: Uint16): PUDPsocket{.cdecl, importc: "SDLNet_UDP_Open",
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dynlib: NetLibName.}
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#* Bind the address 'address' to the requested channel on the UDP socket.
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# If the channel is -1, then the first unbound channel will be bound with
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# the given address as it's primary address.
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# If the channel is already bound, this new address will be added to the
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# list of valid source addresses for packets arriving on the channel.
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# If the channel is not already bound, then the address becomes the primary
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# address, to which all outbound packets on the channel are sent.
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# This function returns the channel which was bound, or -1 on error.
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#*
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proc UDP_Bind*(sock: PUDPsocket, channel: int, address: var TIPaddress): int{.
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cdecl, importc: "SDLNet_UDP_Bind", dynlib: NetLibName.}
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#* Unbind all addresses from the given channel *
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proc UDP_Unbind*(sock: PUDPsocket, channel: int){.cdecl,
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importc: "SDLNet_UDP_Unbind", dynlib: NetLibName.}
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#* Get the primary IP address of the remote system associated with the
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# socket and channel. If the channel is -1, then the primary IP port
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# of the UDP socket is returned -- this is only meaningful for sockets
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# opened with a specific port.
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# If the channel is not bound and not -1, this function returns NULL.
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# *
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proc UDP_GetPeerAddress*(sock: PUDPsocket, channel: int): PIPAddress{.cdecl,
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importc: "SDLNet_UDP_GetPeerAddress", dynlib: NetLibName.}
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#* Send a vector of packets to the the channels specified within the packet.
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# If the channel specified in the packet is -1, the packet will be sent to
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# the address in the 'src' member of the packet.
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# Each packet will be updated with the status of the packet after it has
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# been sent, -1 if the packet send failed.
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# This function returns the number of packets sent.
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#*
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proc UDP_SendV*(sock: PUDPsocket, packets: PPUDPpacket, npackets: int): int{.
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cdecl, importc: "SDLNet_UDP_SendV", dynlib: NetLibName.}
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#* Send a single packet to the specified channel.
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# If the channel specified in the packet is -1, the packet will be sent to
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# the address in the 'src' member of the packet.
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# The packet will be updated with the status of the packet after it has
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# been sent.
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# This function returns 1 if the packet was sent, or 0 on error.
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#*
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proc UDP_Send*(sock: PUDPsocket, channel: int, packet: PUDPpacket): int{.
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cdecl, importc: "SDLNet_UDP_Send", dynlib: NetLibName.}
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#* Receive a vector of pending packets from the UDP socket.
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# The returned packets contain the source address and the channel they arrived
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# on. If they did not arrive on a bound channel, the the channel will be set
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# to -1.
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# The channels are checked in highest to lowest order, so if an address is
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# bound to multiple channels, the highest channel with the source address
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# bound will be returned.
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# This function returns the number of packets read from the network, or -1
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# on error. This function does not block, so can return 0 packets pending.
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#*
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proc UDP_RecvV*(sock: PUDPsocket, packets: PPUDPpacket): int{.cdecl,
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importc: "SDLNet_UDP_RecvV", dynlib: NetLibName.}
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#* Receive a single packet from the UDP socket.
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# The returned packet contains the source address and the channel it arrived
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# on. If it did not arrive on a bound channel, the the channel will be set
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# to -1.
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# The channels are checked in highest to lowest order, so if an address is
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# bound to multiple channels, the highest channel with the source address
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# bound will be returned.
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# This function returns the number of packets read from the network, or -1
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# on error. This function does not block, so can return 0 packets pending.
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#*
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proc UDP_Recv*(sock: PUDPsocket, packet: PUDPpacket): int{.cdecl,
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importc: "SDLNet_UDP_Recv", dynlib: NetLibName.}
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#* Close a UDP network socket *
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proc UDP_Close*(sock: PUDPsocket){.cdecl, importc: "SDLNet_UDP_Close",
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dynlib: NetLibName.}
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#***********************************************************************
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#* Hooks for checking sockets for available data *
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#***********************************************************************
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#* Allocate a socket set for use with SDLNet_CheckSockets()
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# This returns a socket set for up to 'maxsockets' sockets, or NULL if
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# the function ran out of memory.
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# *
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proc AllocSocketSet*(maxsockets: int): PSocketSet{.cdecl,
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importc: "SDLNet_AllocSocketSet", dynlib: NetLibName.}
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#* Add a socket to a set of sockets to be checked for available data *
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proc AddSocket*(theSet: PSocketSet, sock: PGenericSocket): int{.
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cdecl, importc: "SDLNet_AddSocket", dynlib: NetLibName.}
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proc TCP_AddSocket*(theSet: PSocketSet, sock: PTCPSocket): int
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proc UDP_AddSocket*(theSet: PSocketSet, sock: PUDPSocket): int
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#* Remove a socket from a set of sockets to be checked for available data *
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proc DelSocket*(theSet: PSocketSet, sock: PGenericSocket): int{.
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cdecl, importc: "SDLNet_DelSocket", dynlib: NetLibName.}
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proc TCP_DelSocket*(theSet: PSocketSet, sock: PTCPSocket): int
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# SDLNet_DelSocket(set, (SDLNet_GenericSocket)sock)
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proc UDP_DelSocket*(theSet: PSocketSet, sock: PUDPSocket): int
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#SDLNet_DelSocket(set, (SDLNet_GenericSocket)sock)
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#* This function checks to see if data is available for reading on the
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# given set of sockets. If 'timeout' is 0, it performs a quick poll,
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# otherwise the function returns when either data is available for
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# reading, or the timeout in milliseconds has elapsed, which ever occurs
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# first. This function returns the number of sockets ready for reading,
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# or -1 if there was an error with the select() system call.
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#*
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proc CheckSockets*(theSet: PSocketSet, timeout: int32): int{.cdecl,
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importc: "SDLNet_CheckSockets", dynlib: NetLibName.}
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#* After calling SDLNet_CheckSockets(), you can use this function on a
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# socket that was in the socket set, to find out if data is available
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# for reading.
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#*
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proc SocketReady*(sock: PGenericSocket): bool
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#* Free a set of sockets allocated by SDL_NetAllocSocketSet() *
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proc FreeSocketSet*(theSet: PSocketSet){.cdecl,
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importc: "SDLNet_FreeSocketSet", dynlib: NetLibName.}
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#***********************************************************************
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#* Platform-independent data conversion functions *
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#***********************************************************************
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#* Write a 16/32 bit value to network packet buffer *
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proc Write16*(value: Uint16, area: Pointer){.cdecl,
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importc: "SDLNet_Write16", dynlib: NetLibName.}
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proc Write32*(value: Uint32, area: Pointer){.cdecl,
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importc: "SDLNet_Write32", dynlib: NetLibName.}
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#* Read a 16/32 bit value from network packet buffer *
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proc Read16*(area: Pointer): Uint16{.cdecl, importc: "SDLNet_Read16",
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dynlib: NetLibName.}
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proc Read32*(area: Pointer): Uint32{.cdecl, importc: "SDLNet_Read32",
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dynlib: NetLibName.}
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proc VERSION(X: var Tversion) =
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X.major = MAJOR_VERSION
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X.minor = MINOR_VERSION
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X.patch = PATCHLEVEL
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proc TCP_AddSocket(theSet: PSocketSet, sock: PTCPSocket): int =
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result = AddSocket(theSet, cast[PGenericSocket](sock))
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proc UDP_AddSocket(theSet: PSocketSet, sock: PUDPSocket): int =
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result = AddSocket(theSet, cast[PGenericSocket](sock))
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proc TCP_DelSocket(theSet: PSocketSet, sock: PTCPSocket): int =
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result = DelSocket(theSet, cast[PGenericSocket](sock))
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proc UDP_DelSocket(theSet: PSocketSet, sock: PUDPSocket): int =
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result = DelSocket(theSet, cast[PGenericSocket](sock))
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proc SocketReady(sock: PGenericSocket): bool =
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result = ((sock != nil) and (sock.ready == 1))
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