Quellcode-Bibliothek pop3server.vdmpp Sprache: VDM

\ection{he POP3 Server}

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
class POP3Server

types
\endrng subsetmaildrop

\begin{vdm_al}
public MessageInfo : index:nat
                      size: natjava.lang.StringIndexOutOfBoundsException: Range [34, 35) out of bounds for length 34
\nd{}

\begin{dm_al}
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  connChannel;
\end}

\begin}
instance variables
  maildrop      : MailDropmap`UserName POP3Types ==>POP3Server
  passwords  POP3Types to
                   maildrop    : ;
  locksmap to
                         :=|-}
serverStarted : ;
invdom passwords= maildrop
    rng locks subset dom maildrop;

typesAuthenticateUser(, password=java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

public MailDrop = map POP3Types`UserName(userpassword
public ::
  msgs() ==
  locked  set locks
public ClientHandlerId
\\{vdm_al

\{vdm_al
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10

public POP3Server: POP3Server`MailDrop * MessageChannelBuffer *
                   map POP3Types`UserName to POP3Types`Password ==> POP3Server>)
POP3Server(md,nch) =
( \{vdm_al
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   := |-}
  GetUserMail) =
returnmaildrop);

public AuthenticateUser: POP3Types
\{vdm_al
  returnuserset and
         passwords(SetUserMessages)

IsLocked POP3Types` ==>bool
\nd{vdm_al
   user in set rng locks;

\endGetUserMessages:POP3Types`UserName ==> seq of POP3Message

begin}
operations

SetUserMessages: POP3Types`UserName * seq of POP3Message
                 =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
SetUserMessages(ser,newMsgs)=
  maildrop(user(user=
\endlet = (user

\begin{vdm_al}
GetUserMail: POP3Types`UserName ==>                               oldMsgs.()]
GetUserMailuser
   maildrop);
\end\{}

\{vdm_al
sync
  mutex);
   := locks {clId |-> user clId in dom and
\end}

\begin{vdm_al}
operations

GetUserMessages`UserName= seq POP3Message
GetUserMessages) ==
  blicReleaseLock: ==>(

\{vdm_al

\{vdm_al
RemoveDeletedMessages`UserName>
RemoveDeletedMessages(user) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
let = GetUserMessages(),
      newMsgs = [ oldMsgs(AcquireLock,ReleaseLock,IsLocked

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    ( SetUserMessages(user,newMsgs;
      return
    )java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6

\begin{vdm_al
publicAcquireLockClientHandlerId *POP3Types`serName = )
java.lang.StringIndexOutOfBoundsException: Range [0, 11) out of bounds for length 0
  lockslocks{clId - user}
pre clId not IsMessageNumber, index)=
userset;

\end{vdm_al}

in
    return  inset inds mb;
public IsValidMessag:`UserNamenat=>bool
IsValidMessageNumber, index
clIdset;

sync
mutex(AcquireLock);  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
mutex(ReleaseLock);
mutex(AcquireLock, ReleaseLocke           mb).IsDeleted
\ublic MessageIsDeleted:POP3Types`serNamenat=>

\begin(user) =java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
operations

CreateClientHandler ==>)
teClientHandler) =java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
start( POP3ClientHandler, ));

\end{vdm_al}

\DeleteMessage, ) ==
  let  =GetUserMessages()(index
IsMessageNumbernewMsg =oldMsgDelete
  let mb (user
  in
        (user(user+{ |->newMsg }

public IsValidMessageNumber:`UserNamenat java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
IsValidMessageNumberuser) ==
   inset mb
  in
return in inds  and
            mb).IsDeleted

GetMsgHeader, index =
MessageIsDeleted mb(user
  let mb
     mb).GetHeader
    return in  inds  and
           mb(ndex)IsDeleted(;

public: POP3Types *  ==>(java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
DeleteMessage(user
  let oldMsg =GetUserMessages()(index
      newMsg=oldMsg.()
  let mb =GetUserMessages()
r mb).GetBody
userin set  maildrop
    let mb = maildrop(user).msgs mbmaildropuser
    in ndexin inds  and
        mb).IsDeleted

publicjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
GetMsgHeader, indexjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
  let = GetUserMessages)
  in|   set  ]
    return
pre(user)
    let pre in dommaildrop;
     index  inds mb
       not mb(index).IsDeleted(user) ==

public GetMsgBody: POP3Types`UserName * nat ==> seq of char
(user) ==
     mbGetUserMessages)
      in
inset and
pre inset and
let = (user
    in(user) ==
       not GetUserMessages)(ndex.()

publicResetDeletedMessages: POP3Types`serName = )
ResetDeletedMessages(user
  let inset and
sgs (i)Undelete
                | i in set java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  in
    SetUserMessages(user,GetMessageInfo(user, indexjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
pre user in set   indexjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16

public GetMessageText: POP3Types`UserName * nat ==> seq of char
GetMessageText, index=
  return GetUserMessages(user)(index).GetText()
pre in set  maildrop
    let mb = GetUserMessages(user)
    in
      index
      not { (index

GetMessageSize`UserName  == nat
GetMessageSize(user, index) ==
  return GetUserMessages(user)(index).GetSize()
pre user in set dom maildrop and index> =>( inset(user and
    let mb = maildrop(usernotmaildrop(ser)msgs).IsDeleted(;

      index{vdm_al}
      not mb(index).IsDeleted();

public GetMessageInfo: POP3Types`UserName
(user) ==
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if = nil
  then
    returnGetUidl, index=
                                 GetMessageSize(user, i)) |
                  i in setjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
  else
    return(indexGetUniqueId(
                            GetMessageSize
pre  <>nil = (ndex in set inds maildrop(user).msgs
GetAllUidls) ==

\end{vdm_al}

\begin{vdm_al}java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4

public GetUidl: POP3Types`UserName * nat ==> seq java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
GetUidl (user,index)=
  let = GetUserMessages)
   return GetUserMessages)
    return POP3ClientHandler user domm;
           mb(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

public GetMailBoxSize:POP3Types`UserName java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
(user=
  let mb = GetUserMessages(user)
  in
    returnpre  in  dom maildrop;

\end{GetChannel)=

}
public GetNumberOfMessages}
GetNumberOfMessages(
\{vdm_al
user  dom maildrop;

\end{vdm_al

{vdm_al}
public GetMailBoxSize`UserName= java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
GetMailBoxSize(user) ==
  let Len
  Len ofnat - nat
pre()=

GetChannel( =>
GetChanneljava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  return connChanneljava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
end}

\
unctions

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1
sumseq( =
  if s = []
  then 0
s + sumseq s)
measure Len;

Len: seq of nat ->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
Len(l)  ;
  len

\end{vdm_al}

\begin}
thread}

while{}
endjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  in
\egin{rtinfo
{.ast]
)
\end{vdm_al}

\begin{vdm_al}
operations

public WaitForServerStartend}
WaitForServerStart() ==
  skip;

sync

per WaitForServerStart => serverStarted;
\end{vdm_al}

\begin{vdm_al}
end POP3Server
\end{vdm_al}

\begin{rtinfo}
{rtinfo.ast}[POP3Server]
\end{rtinfo}

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