mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 09:05:45 +00:00
262 lines
7.4 KiB
C++
262 lines
7.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#include "msg.h"
|
|
#include "msgccach.h"
|
|
#include "imap.h"
|
|
#include "prtime.h"
|
|
#include "msgimap.h"
|
|
#include "prefapi.h"
|
|
|
|
const int32 kImapCacheTimeLimitInSeconds = 1740; // 29 minutes, RFC says server must not
|
|
// drop before 30 minutes
|
|
|
|
|
|
MSG_CachedConnectionList::MSG_CachedConnectionList()
|
|
{
|
|
m_numNullFolders = 0;
|
|
}
|
|
|
|
MSG_CachedConnectionList::~MSG_CachedConnectionList()
|
|
{
|
|
}
|
|
|
|
XP_Bool MSG_CachedConnectionList::AddConnection(TNavigatorImapConnection *connection, MSG_FolderInfo *folder, MSG_IMAPHost *host)
|
|
{
|
|
int32 maxCachedConnections = 10;
|
|
PREF_GetIntPref("mail.imap.max_cached_connections", &maxCachedConnections);
|
|
#ifdef DEBUG_bienvenu
|
|
if (GetSize() >= maxCachedConnections)
|
|
{
|
|
XP_Trace("connection cache full!\n");
|
|
for (int32 i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *curConn = GetAt(i);
|
|
if (curConn)
|
|
XP_Trace("in connection cache - %s\n", curConn->m_folder ? curConn->m_folder->GetName() : "");
|
|
}
|
|
}
|
|
#endif
|
|
if (GetSize() >= maxCachedConnections)
|
|
{ // try to find a connection to remove
|
|
XPPtrArray referringPanes;
|
|
|
|
for (int32 i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *curConn = GetAt(i);
|
|
MSG_FolderInfo *connFolder = curConn ? curConn->m_folder : 0;
|
|
|
|
// remove the first cached connection we can find that is not for an inbox,
|
|
// and which isn't being displayed in any window
|
|
if (connFolder && !(connFolder->GetFlags() & MSG_FOLDER_FLAG_INBOX))
|
|
{
|
|
connFolder->GetMaster()->FindPanesReferringToFolder(connFolder, &referringPanes);
|
|
if (referringPanes.GetSize() == 0)
|
|
{
|
|
IMAP_TerminateConnection (curConn->m_connection);
|
|
RemoveAt(i);
|
|
delete curConn;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (GetSize() >= maxCachedConnections || (folder == NULL && m_numNullFolders > 1))
|
|
return FALSE;
|
|
|
|
struct MSG_CachedConnection *cachedConnection = new MSG_CachedConnection;
|
|
|
|
if (cachedConnection)
|
|
{
|
|
if (!folder)
|
|
m_numNullFolders++;
|
|
cachedConnection->m_connection = connection;
|
|
cachedConnection->m_folder = folder;
|
|
cachedConnection->m_host = (folder) ? ((MSG_IMAPFolderInfoMail *) folder)->GetIMAPHost() : host;
|
|
#ifndef NSPR20
|
|
cachedConnection->m_ImapCacheTimeStamp = PR_NowS(); // time in seconds
|
|
#else
|
|
{
|
|
int64 nowS;
|
|
LL_I2L(nowS, PR_IntervalToSeconds(PR_IntervalNow()));
|
|
cachedConnection->m_ImapCacheTimeStamp = nowS; // time in seconds
|
|
}
|
|
#endif /* NSPR20 */
|
|
Add(cachedConnection);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
TNavigatorImapConnection * MSG_CachedConnectionList::RemoveConnection(MSG_FolderInfo *folder, MSG_IMAPHost *host)
|
|
{
|
|
int cacheIndex;
|
|
TNavigatorImapConnection *returnConnection = NULL;
|
|
XP_Bool hasConnection = HasConnection(folder, host, cacheIndex);
|
|
if (hasConnection)
|
|
{
|
|
struct MSG_CachedConnection *curConn = GetAt(cacheIndex);
|
|
returnConnection = curConn->m_connection;
|
|
delete curConn;
|
|
RemoveAt(cacheIndex);
|
|
}
|
|
// if we didn't find one, try finding an unused (by an open folder) connection
|
|
if (!returnConnection && folder)
|
|
return RemoveConnection(NULL, host);
|
|
|
|
return returnConnection;
|
|
}
|
|
|
|
XP_Bool MSG_CachedConnectionList::HasConnection(MSG_FolderInfo *folder, MSG_IMAPHost *host, int &cacheIndex)
|
|
{
|
|
TNavigatorImapConnection *returnConnection = NULL;
|
|
int32 timeoutLimitInSeconds = kImapCacheTimeLimitInSeconds;
|
|
|
|
int i;
|
|
for (i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *curConn = GetAt(i);
|
|
// if curConn->m_folder is NULL
|
|
if (curConn && curConn->m_folder == folder && curConn->m_host == host)
|
|
{
|
|
returnConnection = curConn->m_connection;
|
|
|
|
if (curConn->m_folder == NULL)
|
|
m_numNullFolders--;
|
|
if (returnConnection)
|
|
{
|
|
// check to see if time limit expired
|
|
int64 cacheTimeLimit;
|
|
int64 diffFromLimit;
|
|
|
|
int32 overriddenTimeLimit;
|
|
if (PREF_GetIntPref("mail.imap.connection_timeout", &overriddenTimeLimit) == PREF_OK)
|
|
timeoutLimitInSeconds = overriddenTimeLimit;
|
|
|
|
LL_I2L(cacheTimeLimit, timeoutLimitInSeconds);
|
|
#ifndef NSPR20
|
|
LL_SUB(diffFromLimit, PR_NowS(), curConn->m_ImapCacheTimeStamp); // r = a - b
|
|
#else
|
|
{
|
|
int64 nowS;
|
|
LL_I2L(nowS, PR_IntervalToSeconds(PR_IntervalNow()));
|
|
LL_SUB(diffFromLimit, nowS, curConn->m_ImapCacheTimeStamp); // r = a - b
|
|
}
|
|
#endif /* NSPR20 */
|
|
LL_SUB(diffFromLimit, diffFromLimit, cacheTimeLimit); // r = a - b
|
|
if (LL_GE_ZERO(diffFromLimit))
|
|
{
|
|
// the time limit was exceeded, kill this connection
|
|
IMAP_TerminateConnection(returnConnection);
|
|
delete curConn;
|
|
RemoveAt(i);
|
|
returnConnection = NULL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
// if we didn't find one, try finding an unused (by an open folder) connection
|
|
|
|
cacheIndex = i;
|
|
return (returnConnection != NULL);
|
|
}
|
|
|
|
struct MSG_CachedConnection *MSG_CachedConnectionList::GetAt (int i) const
|
|
{
|
|
return (struct MSG_CachedConnection *) XPPtrArray::GetAt(i);
|
|
}
|
|
|
|
void MSG_CachedConnectionList::CloseAllConnections()
|
|
{
|
|
for (int i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *cachedConn = GetAt(i);
|
|
if (cachedConn)
|
|
{
|
|
IMAP_TerminateConnection (cachedConn->m_connection);
|
|
delete cachedConn;
|
|
}
|
|
}
|
|
RemoveAll();
|
|
}
|
|
|
|
void MSG_CachedConnectionList::FolderClosed(MSG_FolderInfo *folder)
|
|
{
|
|
if (!(folder->GetFlags() & MSG_FOLDER_FLAG_INBOX))
|
|
{
|
|
// if one of the connections in the connection cache is for
|
|
// this folder, close it and remove it. If we are the only
|
|
// connection, leave it, but clear the folder so we will
|
|
// re-use the connection for another folder.
|
|
for (int i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *cachedConn = GetAt(i);
|
|
if (cachedConn && cachedConn->m_folder == folder)
|
|
{
|
|
// We want to account for the fact that we will leave a
|
|
// connection for the inbox open at all times. It's possible
|
|
// that we could have two connections that aren't the inbox
|
|
if (ShouldRemoveConnection())
|
|
{
|
|
IMAP_TerminateConnection (cachedConn->m_connection);
|
|
RemoveAt(i);
|
|
delete cachedConn;
|
|
}
|
|
else
|
|
{
|
|
cachedConn->m_folder = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void MSG_CachedConnectionList::FolderDeleted(MSG_FolderInfo *folder)
|
|
{
|
|
{
|
|
// if one of the connections in the connection cache is for
|
|
// this folder, close it and remove it.
|
|
for (int i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *cachedConn = GetAt(i);
|
|
if (cachedConn && cachedConn->m_folder == folder)
|
|
{
|
|
IMAP_TerminateConnection (cachedConn->m_connection);
|
|
RemoveAt(i);
|
|
delete cachedConn;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// check if we already have a connection cached that is not for the inbox.
|
|
XP_Bool MSG_CachedConnectionList::ShouldRemoveConnection()
|
|
{
|
|
for (int i = 0; i < GetSize(); i++)
|
|
{
|
|
struct MSG_CachedConnection *cachedConn = GetAt(i);
|
|
if (cachedConn && (!cachedConn->m_folder || !(cachedConn->m_folder->GetFlags() & MSG_FOLDER_FLAG_INBOX)))
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|