eudora-mac/imapconnections.c

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/* Copyright (c) 1998 by QUALCOMM Incorporated */
#define	FILE_NUM 119

/**********************************************************************
 *	imapconnections.c
 *
 *		This file contains the functions that manage IMAP connections
 **********************************************************************/

#include "imapconnections.h" 
#include "myssl.h"

// connection management
short CountConnections(PersHandle pers);
void ZapIMAPConnectionHandle(IMAPConnectionHandle *node);
IMAPConnectionHandle FindConnectionFromStream(IMAPStreamPtr imapStream);
void CloseImapStream(IMAPConnectionHandle node);
void CloseIMAPStreamSilently(IMAPConnectionHandle node);
Boolean AnyThreadsRunning(void);

/************************************************************************
 *	EnsureConnectionPool - build the connection pool for a given pers
 ************************************************************************/
OSErr EnsureConnectionPool(PersHandle pers)
{
	OSErr err = noErr;
	PersHandle oldPers = CurPers;
	long numConnections;
	IMAPConnectionHandle node;
	Str255 user, host;
	
	CurPers = pers;
	
	numConnections = GetRLong(IMAP_MAX_CONNECTIONS) - CountConnections(CurPers);
	GetPOPInfo(user,host);
	
	// create as many connections as we need for this personality
	while(numConnections > 0 && (err==noErr))
	{
		node = NewZH(IMAPConnectionStruct);
		if (node)
		{
			// create the imapstream when we first use this node ...
			(*node)->owner = (*CurPers)->persId;
			(*node)->lifeTime = GetRLong(IMAP_MAIN_CON_TIMEOUT);
			
			LL_Queue(gIMAPConnectionPool, node, (IMAPConnectionHandle));
		}
		else
		{
			WarnUser(MEM_ERR, err=MemError());
			break;
		}
		numConnections--;
	}
	CurPers = oldPers;
	
	return (err);
}

/************************************************************************
 *	CountConnections - return the number of existing connections to a 
 *	 the server used by a given personality.
 ************************************************************************/
short CountConnections(PersHandle pers)
{
	short result = 0;
	PersHandle oldPers = CurPers;
	IMAPConnectionHandle node = gIMAPConnectionPool, next = nil;
	Str255 user, host;
	long port;
			
	CurPers = pers;
	port = GetRLong(IMAP_PORT);
	GetPOPInfoLo(user,host,&port);
	CurPers = oldPers;

	while (node)
	{	
		next = (*node)->next;
		
		// if this node is owned by the given personality ...
		if ((*node)->owner == (*pers)->persId)
		{
			result++;