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/*******************************************************************************
* shroudBNC - an object-oriented framework for IRC *
* Copyright (C) 2005-2014 Gunnar Beutner *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* 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. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
*******************************************************************************/
#include "StdAfx.h"
/**
* CKeyring
*
* Constructs a new keyring object which can be used for storing channel keys.
*
* @param Config the configuration object which should be used for storing
* the keys
*/
CKeyring::CKeyring(CConfig *Config, CUser *Owner) {
SetOwner(Owner);
m_Config = Config;
}
/**
* SetKey
*
* Saves or removes a key for a specific channel in the keyring. Returns true if the key
* was successfully set, false otherwise.
*
* @param Channel the channel
* @param Key the key
*/
RESULT<bool> CKeyring::SetKey(const char *Channel, const char *Key) {
bool ReturnValue;
char *Setting;
if (!RemoveRedundantKeys()) {
THROW(bool, Generic_QuotaExceeded, "Too many keys.");
}
int rc = asprintf(&Setting, "key.%s", Channel);
if (RcFailed(rc)) {
THROW(bool, Generic_OutOfMemory, "Out of memory.");
}
ReturnValue = m_Config->WriteString(Setting, Key);
free(Setting);
RETURN(bool, ReturnValue);
}
/**
* GetKey
*
* Returns the key for the specified channel or NULL if there is no key
* or the key is unknown.
*
* @param Channel the channel for which the key should be retrieved
*/
RESULT<const char *> CKeyring::GetKey(const char *Channel) {
char *Setting;
const char *ReturnValue;
int rc = asprintf(&Setting, "key.%s", Channel);
if (RcFailed(rc)) {
THROW(const char *, Generic_OutOfMemory, "Out of memory.");
}
ReturnValue = m_Config->ReadString(Setting);
free(Setting);
RETURN(const char *, ReturnValue);
}
/**
* RemoveRedundantKeys
*
* Removes obsolete keys from a keyring.
*/
bool CKeyring::RemoveRedundantKeys(void) {
int i, Count = 0;
const char *Channel, *Key;
char **Keys;
if (GetUser()->GetIRCConnection() == NULL) {
return false;
}
Keys = m_Config->GetInnerHashtable()->GetSortedKeys();
i = 0;
while ((Key = Keys[i++]) != NULL) {
if (strstr(Key, "key.") == Key) {
Count++;
}
}
if (!GetUser()->IsAdmin() && Count >= g_Bouncer->GetResourceLimit("keys")) {
i = 0;
while ((Key = Keys[i++]) != NULL) {
if (strstr(Key, "key.") == Key) {
Channel = Key + strlen("key.");
if (GetUser()->GetIRCConnection()->GetChannel(Channel) != NULL) {
m_Config->WriteString(Key, NULL);
Count--;
}
}
}
if (Count >= g_Bouncer->GetResourceLimit("keys")) {
free(Keys);
return false;
}
}
free(Keys);
return true;
}
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