Copyright 1996-2003 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by John D. Polstra.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
INTERFACE CVProto;
IMPORT FileAttr, Rd, Thread, TokScan, Wr;
EXCEPTION NotSupported;
TYPE
VersionNumber = [0..65535];
T = OBJECT
major, minor: VersionNumber;
v: Values;
METHODS
getCmd(rd: Rd.T): TokScan.T
RAISES {Rd.EndOfFile, Rd.Failure, Thread.Alerted};
putCmd(wr: Wr.T;
cmd: TEXT;
f0, f1, f2, f3, f4, f5, f6, f7, f8, f9: TEXT := NIL;
more := FALSE)
RAISES {Thread.Alerted, Wr.Failure};
END;
Values = RECORD
(* The following fields depend solely on the protocol version.
The defaults here generally specify the behavior of older
versions of the protocol. Newer versions have the opposite
values. *)
hasFileAttrs := FALSE;
hasHardLinks := FALSE;
dirsAreExplicit := FALSE;
serverSendsFilter := TRUE;
hasClientAccepts := FALSE;
hasKeywordControl := FALSE;
hasMuxMode := FALSE;
exchangesVersions := FALSE;
hidesAtticInCVSHeader := FALSE;
sendsRevDates := FALSE; (* In checkout mode. *)
clientSendsUmask := FALSE;
handlesWhiteSpace := FALSE; (* In file names, for example. *)
hasLooseRCSCheck := FALSE;
sendsDeltaPhrases := FALSE;
hasMD5Auth := FALSE;
hasRsyncFilter := FALSE;
hasS1GBug := TRUE;
(* The following fields are carried along for convenience, but
they are not directly dependent on the protocol version. They
are separately negotiated at start-up time. *)
attrSupport: FileAttr.SupportInfo;
END;
VAR
Current: T; (* CONST *)
PROCEDURE Lookup(major, minor: VersionNumber): T
RAISES {NotSupported};
Returns the protocol descriptor for the given version number.
PROCEDURE Resolve(major, minor: VersionNumber): T
RAISES {NotSupported};
Returns the protocol descriptor for the lesser of the given version
and the current version.
PROCEDURE HasS1GBug(proto: T; versionString: TEXT): BOOLEAN;
Returns TRUE if the peer is an old version which has the S1G bug.
proto is the negotiated protocol, and versionString is the
textual version name received from the peer.
END CVProto.