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/*
* This module handles shared rooms, inter-Citadel mail, and outbound
* mailing list processing.
*
* Copyright (c) 2000-2012 by the citadel.org team
*
* This program is open source software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "sysdep.h"
#include <stdio.h>
#include <libcitadel.h>
#include "ctdl_module.h"
#include "serv_extensions.h"
/*-----------------------------------------------------------------------------*
* Network maps: evaluate other nodes *
*-----------------------------------------------------------------------------*/
int NTTDebugEnabled = 0;
int NTTDumpEnabled = 0;
/*
* network_talking_to() -- concurrency checker
*/
static HashList *nttlist = NULL;
int CtdlNetworkTalkingTo(const char *nodename, long len, int operation)
{
int retval = 0;
HashPos *Pos = NULL;
void *vdata;
begin_critical_section(S_NTTLIST);
switch(operation) {
case NTT_ADD:
if (nttlist == NULL)
nttlist = NewHash(1, NULL);
Put(nttlist, nodename, len, NewStrBufPlain(nodename, len), HFreeStrBuf);
if (NTTDebugEnabled) syslog(LOG_DEBUG, "nttlist: added <%s>\n", nodename);
break;
case NTT_REMOVE:
if ((nttlist == NULL) ||
(GetCount(nttlist) == 0))
break;
Pos = GetNewHashPos(nttlist, 1);
if (GetHashPosFromKey (nttlist, nodename, len, Pos))
DeleteEntryFromHash(nttlist, Pos);
DeleteHashPos(&Pos);
if (NTTDebugEnabled) syslog(LOG_DEBUG, "nttlist: removed <%s>\n", nodename);
break;
case NTT_CHECK:
if ((nttlist == NULL) ||
(GetCount(nttlist) == 0))
break;
if (GetHash(nttlist, nodename, len, &vdata))
retval ++;
if (NTTDebugEnabled) syslog(LOG_DEBUG, "nttlist: have [%d] <%s>\n", retval, nodename);
break;
}
if (NTTDumpEnabled)
{
HashPos *It;
StrBuf *NTTDump;
long len;
const char *Key;
void *v;
NTTDump = NewStrBuf ();
It = GetNewHashPos(nttlist, 0);
while (GetNextHashPos(nttlist, It, &len, &Key, &v))
{
if (StrLength(NTTDump) > 0)
StrBufAppendBufPlain(NTTDump, HKEY("|"), 0);
StrBufAppendBuf(NTTDump, (StrBuf*) v, 0);
}
DeleteHashPos(&It);
syslog(LOG_DEBUG, "nttlist: Dump: [%d] <%s>\n",
GetCount(nttlist),
ChrPtr(NTTDump));
FreeStrBuf(&NTTDump);
}
end_critical_section(S_NTTLIST);
return(retval);
}
void cleanup_nttlist(void)
{
begin_critical_section(S_NTTLIST);
DeleteHash(&nttlist);
end_critical_section(S_NTTLIST);
}
/*
* Module entry point
*/
void SetNTTDebugEnabled(const int n)
{
NTTDebugEnabled = n;
}
void SetNTTDumpEnabled(const int n)
{
NTTDumpEnabled = n;
}
/*
* Module entry point
*/
CTDL_MODULE_INIT(nttlist)
{
if (!threading)
{
CtdlRegisterDebugFlagHook(HKEY("networktalkingto"), SetNTTDebugEnabled, &NTTDebugEnabled);
CtdlRegisterDebugFlagHook(HKEY("dumpnetworktalkingto"), SetNTTDumpEnabled, &NTTDumpEnabled);
CtdlRegisterCleanupHook(cleanup_nttlist);
}
return "nttlist";
}
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