int ValidateUserHost( const char *userhost )
{
static char localuserhost[USERHOSTLEN];
char *nick, *user , *host;
if( userhost == NULL )
return NS_FAILURE;
if( !strchr( userhost, '!' ) || !strchr( userhost, '@' ) )
return NS_FAILURE;
strlcpy( localuserhost, userhost, USERHOSTLEN );
nick = strtok( localuserhost, "!" );
user = strtok( NULL, "@" );
host = strtok( NULL, "" );
if( ValidateNick( nick ) != NS_SUCCESS )
return NS_FAILURE;
if( ValidateUser( user ) != NS_SUCCESS )
return NS_FAILURE;
if( ValidateHost( host ) != NS_SUCCESS )
return NS_FAILURE;
return NS_SUCCESS;
}
int cServerDC::ValidateUser(cConnDC *conn, const string &nick, int &closeReason)
{
// first validate the IP and host if any
stringstream errmsg,os;
// Default close reason
closeReason = eCR_INVALID_USER;
if (!conn) return 0;
//time_t n;
bool close=false;
// phase 1: test nick validity
// phase 2: test ip/host ban (registered users pass)
// phase 3: test nickban
// then we're done
static cRegUserInfo *sRegInfo = new cRegUserInfo;
if ((nick.size() < mC.max_nick * 2 ) && mR->FindRegInfo(*sRegInfo,nick) && !conn->mRegInfo ) {
conn->mRegInfo = sRegInfo;
sRegInfo = new cRegUserInfo;
}
// Validate nick
tVAL_NICK vn = ValidateNick(nick, (conn->GetTheoricalClass() >= eUC_REGUSER ));
if(vn != eVN_OK) {
close=true;
if(vn == eVN_BANNED) {
errmsg << _("Do not reconnect too fast.") << " ";
closeReason = eCR_RECONNECT;
}
else
errmsg << _("Bad nickname") << ": ";
if (conn->Log(2))
conn->LogStream() << "Bad nick: '" << nick << "' (" << vn << ")" << endl;
}
switch(vn) {
case eVN_OK:
break;
case eVN_CHARS:
errmsg << _("Unallowed characters in your nick.");
if(mC.nick_chars.size())
errmsg << autosprintf(_("use these: %s"), mC.nick_chars.c_str());
break;
case eVN_SHORT:
errmsg << _("Your nick is too short.");
break;
case eVN_LONG:
errmsg << _("Your nick is too long.");
break;
case eVN_USED: // never happens
errmsg << _("Your nick is already in use.");
break;
case eVN_PREFIX:
errmsg << autosprintf(_("Invalid nick prefix. Use: %s"), mC.nick_prefix.c_str());
break;
case eVN_NOT_REGED_OP:
errmsg << _("Operator not registered.");
break;
case eVN_BANNED:
errmsg << autosprintf(_("Wait %s before reconnecting."), cTime(mBanList->IsNickTempBanned(nick) - cTime().Sec()).AsPeriod().AsString().c_str());
break;
default:
errmsg << _("Unknown error.");
break;
}
if (close) {
if (vn == eVN_USED) {
static string omsg;
omsg = "$ValidateDenide";
conn->Send(omsg);
}
DCPublicHS(errmsg.str(), conn);
if (conn->Log(3)) conn->LogStream() << "Bad nick: " << errmsg.str() << endl;
return 0;
}
cBan Ban(this);
bool banned = false;
if (conn->GetTheoricalClass() < eUC_MASTER) { // master class is immune
// here we cant check share ban because user hasnt sent $MyINFO yet
if (conn->GetTheoricalClass() == eUC_NORMUSER)
banned = mBanList->TestBan(Ban, conn, nick, eBF_NICK | eBF_NICKIP | eBF_RANGE | eBF_HOST2 | eBF_HOST1 | eBF_HOST3 | eBF_HOSTR1 | eBF_PREFIX);
else // registered users avoid prefix ban check because we might actually ban a prefix for unregistered users, but let registered users to use it
banned = mBanList->TestBan(Ban, conn, nick, eBF_NICK | eBF_NICKIP | eBF_RANGE | eBF_HOST2 | eBF_HOST1 | eBF_HOST3 | eBF_HOSTR1);
}
if (banned) {
errmsg << _("You are banned from this hub.") << "\r\n";
Ban.DisplayUser(errmsg);
DCPublicHS(errmsg.str(), conn);
if (conn->Log(1)) conn->LogStream() << "Unallowed user (" << Ban.mType << "), closing" << endl;
return 0;
}
if (mC.nick_prefix_cc) {
if (conn->mCC.size() && conn->mCC != "--") {
string Prefix("[");
Prefix += conn->mCC;
Prefix += "]";
if (StrCompare(nick, 0, 4, Prefix) != 0) {
errmsg << autosprintf(_("Please add %s in front of your nick."), Prefix.c_str());
close = conn->GetTheoricalClass() < eUC_REGUSER;
}
}
}
if (close) {
DCPublicHS(errmsg.str(), conn);
return 0;
}
return 1;
}