/** Create a new Z-line and add it to global lists.
* \a ipmask must be an IP mask to create an IP-based ban.
*
* @param[in] cptr Client that sent us the Z-line.
* @param[in] sptr Client that originated the Z-line.
* @param[in] ipmask Text mask for the Z-line.
* @param[in] reason Reason for Z-line.
* @param[in] expire Expiration time of Z-line.
* @param[in] lastmod Last modification time of Z-line.
* @param[in] lifetime Lifetime of Z-line.
* @param[in] flags Bitwise combination of ZLINE_* flags.
* @return Zero or CPTR_KILLED, depending on whether \a sptr is suicidal.
*/
int
zline_add(struct Client *cptr, struct Client *sptr, char *ipmask,
char *reason, time_t expire, time_t lastmod, time_t lifetime,
unsigned int flags)
{
struct Zline *azline;
char imask[HOSTLEN + 2];
char *mask;
int tmp;
assert(0 != ipmask);
assert(0 != reason);
assert(((flags & (ZLINE_GLOBAL | ZLINE_LOCAL)) == ZLINE_GLOBAL) ||
((flags & (ZLINE_GLOBAL | ZLINE_LOCAL)) == ZLINE_LOCAL));
Debug((DEBUG_DEBUG, "zline_add(\"%s\", \"%s\", \"%s\", \"%s\", %Tu, %Tu "
"%Tu, 0x%04x)", cli_name(cptr), cli_name(sptr), ipmask, reason,
expire, lastmod, lifetime, flags));
mask = ipmask;
if (sizeof(imask) <
ircd_snprintf(0, imask, sizeof(imask), "%s", mask))
return send_reply(sptr, ERR_LONGMASK);
else if (MyUser(sptr) || (IsUser(sptr) && flags & ZLINE_LOCAL)) {
switch (zline_checkmask(mask)) {
case CHECK_OVERRIDABLE: /* oper overrided restriction */
if (flags & ZLINE_OPERFORCE)
break;
/*FALLTHROUGH*/
case CHECK_REJECTED:
return send_reply(sptr, ERR_MASKTOOWIDE, imask);
break;
}
if ((tmp = count_users(imask, flags)) >=
feature_int(FEAT_ZLINEMAXUSERCOUNT) && !(flags & ZLINE_OPERFORCE))
return send_reply(sptr, ERR_TOOMANYUSERS, tmp);
}
if (!check_if_ipmask(ipmask))
return send_reply(sptr, ERR_INVALIDMASK);
/*
* You cannot set a negative (or zero) expire time, nor can you set an
* expiration time for greater than ZLINE_MAX_EXPIRE.
*/
if (!(flags & ZLINE_FORCE) &&
(expire <= TStime() || expire > TStime() + ZLINE_MAX_EXPIRE)) {
if (!IsServer(sptr) && MyConnect(sptr))
send_reply(sptr, ERR_BADEXPIRE, expire);
return 0;
} else if (expire <= TStime()) {
/* This expired Z-line was forced to be added, so mark it inactive. */
flags &= ~ZLINE_ACTIVE;
}
if (!lifetime) /* no lifetime set, use expiration time */
lifetime = expire;
/* lifetime is already an absolute timestamp */
/* Inform ops... */
sendto_opmask_butone(0, ircd_strncmp(reason, "AUTO", 4) ? SNO_GLINE :
SNO_AUTO, "%s adding %s%s ZLINE for %s, expiring at "
"%Tu: %s",
(feature_bool(FEAT_HIS_SNOTICES) || IsServer(sptr)) ?
cli_name(sptr) :
cli_name((cli_user(sptr))->server),
(flags & ZLINE_ACTIVE) ? "" : "deactivated ",
(flags & ZLINE_LOCAL) ? "local" : "global",
mask, expire, reason);
/* and log it */
log_write(LS_GLINE, L_INFO, LOG_NOSNOTICE,
"%#C adding %s ZLINE for %s, expiring at %Tu: %s", sptr,
flags & ZLINE_LOCAL ? "local" : "global", mask,
expire, reason);
/* make the zline */
azline = make_zline(mask, reason, expire, lastmod, lifetime, flags);
/* since we've disabled overlapped Z-line checking, azline should
* never be NULL...
*/
assert(azline);
zline_propagate(cptr, sptr, azline);
return do_zline(cptr, sptr, azline); /* knock off users if necessary */
}
static void vsendto_prefix_one(struct Client *to, struct Client *from,
char *pattern, va_list vlorig)
{
va_list vl;
va_copy(vl,vlorig);
if (to && from && MyUser(to) && IsUser(from))
{
static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
char *par;
int flag = 0;
Reg3 anUser *user = from->cli_user;
par = va_arg(vl, char *);
strcpy(sender, from->name);
#if defined(ESNET_NEG)
if (user && !(to->cli_connect->negociacion & USER_TOK))
#else
if (user)
#endif
{
if (user->username)
{
strcat(sender, "!");
strcat(sender, user->username);
}
if (user->host && !MyConnect(from))
{
strcat(sender, "@");
#if defined(BDD_VIP)
strcat(sender, get_visiblehost(from, NULL));
#else
strcat(sender, user->host);
#endif
flag = 1;
}
}
/*
* Flag is used instead of strchr(sender, '@') for speed and
* also since username/nick may have had a '@' in them. -avalon
*/
#if defined(ESNET_NEG)
if (!flag && MyConnect(from) && user->host && !(to->cli_connect->negociacion & USER_TOK))
#else
if (!flag && MyConnect(from) && user->host)
#endif
{
strcat(sender, "@");
#if defined(BDD_VIP)
strcat(sender, get_visiblehost(from, NULL));
#else
if (IsUnixSocket(from))
strcat(sender, user->host);
else
strcat(sender, from->sockhost);
#endif
}
*sendbuf = ':';
strcpy(&sendbuf[1], sender);
/* Assuming 'pattern' always starts with ":%s ..." */
vsprintf_irc(sendbuf + strlen(sendbuf), &pattern[3], vl);
}
else
void GJJoinIdPassRequest(LPSDHP_IDPASS lpMsgIdPass,int aIndex )
{
char szId[MAX_IDSTRING+1];
#if (S6EP2 == 1 || EX700==1)
char szPass[20+1];
#else
char szPass[MAX_IDSTRING+1];
#endif
char szIpAddress[17];
char szJoominNumber[21]="";
BYTE result=0x01;
int sbOfs=0;
int vNumber=0;
int UserNumber=-1;
int DBNumber;
SDHP_IDPASSRESULT spResult;
memset(szId, 0, sizeof(szId));
memset(szPass, 0, sizeof(szPass));
memset(szIpAddress, 0, sizeof(szIpAddress));
memcpy(szId,lpMsgIdPass->Id,MAX_IDSTRING);
memcpy(szPass,lpMsgIdPass->Pass,20);
BuxConvert(szId, MAX_IDSTRING);
BuxConvert(szPass, 20);
char Block='0';
if( SQLSyntexCheck(szId) == FALSE || SQLSyntexCheck(szPass) == FALSE || SpaceSyntexCheck(szId) == FALSE)
{
result = 0x02;
}
else
{
EnterCriticalSection(&g_JSData.m_critJoinUser);
int nRet = IsUser(szId,szPass,szJoominNumber,Block,DBNumber);
if( nRet == 0 )
{
result = 0;
}
if(gObjSearchUser(szId) == -1)
{
if( nRet == 1 && Block > '0' )
{
if( Block == 'A' )
{
result=0x0E;
}
else if( Block == 'B' )
{
result=0x0F;
}
else result=0x05;
}
else if(nRet == 1)
{
UserNumber = gObjAdd(szId,szPass,DBNumber,aIndex,lpMsgIdPass->IpAddress,lpMsgIdPass->Number);
if(UserNumber < 0)
{
result = 0x04;
}
else
{
gObj[UserNumber].bloc_code = Block;
memcpy(gObj[UserNumber].JoomingNumber,szJoominNumber,20);
g_Window.ServerLogAdd(ST_JOINSERVER,"[ %s ] User login",szId);
}
}
else if(nRet == 0)
{
result = 0x00;
}
else
{
result = 0x02;
}
}
else
{
if( result == 0 )
{
result = 0x03;
}
else
{
result = 0x06;
}
g_Window.ServerLogAdd(ST_JOINSERVER,"[ %s ] [ERROR] User Connected login",szId);
}
LeaveCriticalSection(&g_JSData.m_critJoinUser);
}
spResult.h.size = sizeof( spResult );
spResult.h.c = PMHC_BYTE;
spResult.h.headcode = 0x01;
spResult.result = result;
spResult.Number = lpMsgIdPass->Number;
spResult.UserNumber = UserNumber;
spResult.DBNumber = DBNumber;
memcpy(spResult.JoominNumber, szJoominNumber, 20);
memcpy(spResult.Id, szId, MAX_IDSTRING);
DataSend(aIndex,(LPBYTE)&spResult,spResult.h.size);
}
static
void do_trace(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
int i;
struct Client *acptr;
struct Client *acptr2;
const struct ConnectionClass* cl;
char* tname;
int doall;
int *link_s;
int *link_u;
int cnt = 0;
int wilds;
int dow;
if (parc < 2 || BadPtr(parv[1]))
{
/* just "TRACE" without parameters. Must be from local client */
parc = 1;
acptr = &me;
tname = cli_name(&me);
i = HUNTED_ISME;
}
else if (parc < 3 || BadPtr(parv[2]))
{
/* No target specified. Make one before propagating. */
parc = 2;
tname = parv[1];
if ((acptr = find_match_server(parv[1])) ||
((acptr = FindClient(parv[1])) && !MyUser(acptr)))
{
if (IsUser(acptr))
parv[2] = cli_name(cli_user(acptr)->server);
else
parv[2] = cli_name(acptr);
parc = 3;
parv[3] = 0;
if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, IsServer(acptr),
"%s :%C", 2, parc, parv)) == HUNTED_NOSUCH)
return;
}
else
i = HUNTED_ISME;
} else {
/* Got "TRACE <tname> :<target>" */
parc = 3;
if (MyUser(sptr) || Protocol(cptr) < 10)
acptr = find_match_server(parv[2]);
else
acptr = FindNServer(parv[2]);
if ((i = hunt_server_cmd(sptr, CMD_TRACE, cptr, 0, "%s :%C", 2, parc,
parv)) == HUNTED_NOSUCH)
return;
tname = parv[1];
}
if (i == HUNTED_PASS) {
if (!acptr)
acptr = next_client(GlobalClientList, tname);
else
acptr = cli_from(acptr);
send_reply(sptr, RPL_TRACELINK,
version, debugmode, tname,
acptr ? cli_name(cli_from(acptr)) : "<No_match>");
return;
}
doall = (parv[1] && (parc > 1)) ? !match(tname, cli_name(&me)) : 1;
wilds = !parv[1] || strchr(tname, '*') || strchr(tname, '?');
dow = wilds || doall;
/* Don't give (long) remote listings to lusers */
if (dow && !MyConnect(sptr) && !IsAnOper(sptr)) {
send_reply(sptr, RPL_TRACEEND);
return;
}
link_s = MyCalloc(2 * maxconnections, sizeof(link_s[0]));
link_u = link_s + maxconnections;
if (doall) {
for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr)) {
if (IsUser(acptr))
link_u[cli_fd(cli_from(acptr))]++;
else if (IsServer(acptr))
link_s[cli_fd(cli_from(acptr))]++;
}
}
/* report all direct connections */
for (i = 0; i <= HighestFd; i++) {
const char *conClass;
if (!(acptr = LocalClientArray[i])) /* Local Connection? */
continue;
if (IsInvisible(acptr) && dow && !(MyConnect(sptr) && IsOper(sptr)) &&
!IsAnOper(acptr) && (acptr != sptr))
continue;
if (!doall && wilds && match(tname, cli_name(acptr)))
continue;
if (!dow && 0 != ircd_strcmp(tname, cli_name(acptr)))
continue;
conClass = get_client_class(acptr);
switch (cli_status(acptr)) {
case STAT_CONNECTING:
send_reply(sptr, RPL_TRACECONNECTING, conClass, cli_name(acptr));
cnt++;
break;
case STAT_HANDSHAKE:
send_reply(sptr, RPL_TRACEHANDSHAKE, conClass, cli_name(acptr));
cnt++;
break;
case STAT_ME:
break;
case STAT_UNKNOWN:
case STAT_UNKNOWN_USER:
send_reply(sptr, RPL_TRACEUNKNOWN, conClass,
get_client_name(acptr, HIDE_IP));
cnt++;
break;
case STAT_UNKNOWN_SERVER:
send_reply(sptr, RPL_TRACEUNKNOWN, conClass, "Unknown Server");
cnt++;
break;
case STAT_USER:
/* Only opers see users if there is a wildcard
but anyone can see all the opers. */
if ((IsAnOper(sptr) && (MyUser(sptr) ||
!(dow && IsInvisible(acptr)))) || !dow || IsAnOper(acptr)) {
if (IsAnOper(acptr))
send_reply(sptr, RPL_TRACEOPERATOR, conClass,
get_client_name(acptr, SHOW_IP),
CurrentTime - cli_lasttime(acptr));
else
send_reply(sptr, RPL_TRACEUSER, conClass,
get_client_name(acptr, SHOW_IP),
CurrentTime - cli_lasttime(acptr));
cnt++;
}
break;
/*
* Connection is a server
*
* Serv <class> <nS> <nC> <name> <ConnBy> <last> <age>
*
* class Class the server is in
* nS Number of servers reached via this link
* nC Number of clients reached via this link
* name Name of the server linked
* ConnBy Who established this link
* last Seconds since we got something from this link
* age Seconds this link has been alive
*
* Additional comments etc...... -Cym-<*****@*****.**>
*/
case STAT_SERVER:
if (cli_serv(acptr)->user) {
if (!cli_serv(acptr)->by[0]
|| !(acptr2 = findNUser(cli_serv(acptr)->by))
|| (cli_user(acptr2) != cli_serv(acptr)->user))
acptr2 = NULL;
send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i],
link_u[i], cli_name(acptr),
acptr2 ? cli_name(acptr2) : "*",
cli_serv(acptr)->user->username,
cli_serv(acptr)->user->host,
CurrentTime - cli_lasttime(acptr),
CurrentTime - cli_serv(acptr)->timestamp);
} else
send_reply(sptr, RPL_TRACESERVER, conClass, link_s[i],
link_u[i], cli_name(acptr),
(*(cli_serv(acptr))->by) ? cli_serv(acptr)->by : "*", "*",
cli_name(&me), CurrentTime - cli_lasttime(acptr),
CurrentTime - cli_serv(acptr)->timestamp);
cnt++;
break;
default: /* We actually shouldn't come here, -msa */
send_reply(sptr, RPL_TRACENEWTYPE, get_client_name(acptr, HIDE_IP));
cnt++;
break;
}
}
/*
* Add these lines to summarize the above which can get rather long
* and messy when done remotely - Avalon
*/
if (IsAnOper(sptr) && doall) {
for (cl = get_class_list(); cl; cl = cl->next) {
if (Links(cl) > 1)
send_reply(sptr, RPL_TRACECLASS, ConClass(cl), Links(cl) - 1);
}
}
send_reply(sptr, RPL_TRACEEND);
MyFree(link_s);
}
/** Parse a line of data from a user.
* NOTE: parse_*() should not be called recursively by any other
* functions!
* @param[in] cptr Client that sent the data.
* @param[in] buffer Start of input line.
* @param[in] bufend End of input line.
* @return 0 on success, -1 on parse error, or CPTR_KILLED if message
* handler returns it.
*/
int
parse_client(struct Client *cptr, char *buffer, char *bufend)
{
struct Client* from = cptr;
char* ch;
char* s;
int i;
int paramcount;
int isshun = 0;
int lagmin = -1;
int lagfactor = -1;
struct Message* mptr;
MessageHandler handler = 0;
Debug((DEBUG_DEBUG, "Client Parsing: %s", buffer));
if (IsDead(cptr))
return 0;
para[0] = cli_name(from);
for (ch = buffer; *ch == ' '; ch++); /* Eat leading spaces */
if (*ch == ':') /* Is any client doing this ? */
{
for (++ch; *ch && *ch != ' '; ++ch)
; /* Ignore sender prefix from client */
while (*ch == ' ')
ch++; /* Advance to command */
}
if (*ch == '\0')
{
ServerStats->is_empt++;
Debug((DEBUG_NOTICE, "Empty message from host %s:%s",
cli_name(cptr), cli_name(from)));
return (-1);
}
if ((s = strchr(ch, ' ')))
*s++ = '\0';
expire_shuns();
if (IsRegistered(cptr)) {
if (cli_user(cptr)->username && cli_user(cptr)->host) {
if (shun_lookup(cptr, 0))
isshun = 1;
}
}
if ((mptr = msg_tree_parse(ch, &msg_tree)) == NULL)
{
/*
* Note: Give error message *only* to recognized
* persons. It's a nightmare situation to have
* two programs sending "Unknown command"'s or
* equivalent to each other at full blast....
* If it has got to person state, it at least
* seems to be well behaving. Perhaps this message
* should never be generated, though... --msa
* Hm, when is the buffer empty -- if a command
* code has been found ?? -Armin
*/
if (buffer[0] != '\0' && !isshun)
{
if (IsUser(from))
send_reply(from, ERR_UNKNOWNCOMMAND, ch);
Debug((DEBUG_ERROR, "Unknown (%s) from %s",
ch, get_client_name(cptr, HIDE_IP)));
}
ServerStats->is_unco++;
return (-1);
}
if (isshun && !(mptr->flags & MFLG_NOSHUN))
return 0;
paramcount = mptr->parameters;
i = bufend - ((s) ? s : ch);
mptr->bytes += i;
lagmin = get_lag_min(cptr);
lagfactor = get_lag_factor(cptr);
if (lagmin < 0)
lagmin = 2;
if (lagfactor < 0)
lagfactor = 120;
if (((mptr->flags & MFLG_SLOW) || !IsAnOper(cptr)) && lagfactor > 0)
cli_since(cptr) += (lagmin + i / lagfactor);
/*
* Allow only 1 msg per 2 seconds
* (on average) to prevent dumping.
* to keep the response rate up,
* bursts of up to 5 msgs are allowed
* -SRB
*/
/*
* Must the following loop really be so devious? On
* surface it splits the message to parameters from
* blank spaces. But, if paramcount has been reached,
* the rest of the message goes into this last parameter
* (about same effect as ":" has...) --msa
*/
/* Note initially true: s==NULL || *(s-1) == '\0' !! */
if (mptr->flags & MFLG_EXTRA) {
/* This is a horrid kludge to avoid changing the command handler
* argument list. */
para[1] = (char*)mptr->extra;
i = 1;
} else {
i = 0;
}
if (s)
{
if (paramcount > MAXPARA)
paramcount = MAXPARA;
for (;;)
{
/*
* Never "FRANCE " again!! ;-) Clean
* out *all* blanks.. --msa
*/
while (*s == ' ')
*s++ = '\0';
if (*s == '\0')
break;
if (*s == ':')
{
/*
* The rest is single parameter--can
* include blanks also.
*/
para[++i] = s + 1;
break;
}
para[++i] = s;
if (i >= paramcount)
break;
for (; *s != ' ' && *s; s++);
}
}
para[++i] = NULL;
++mptr->count;
handler = mptr->handlers[cli_handler(cptr)];
assert(0 != handler);
if (!feature_bool(FEAT_IDLE_FROM_MSG) && IsUser(cptr) &&
handler != m_ping && handler != m_ignore)
cli_user(from)->last = CurrentTime;
return (*handler) (cptr, from, i, para);
}
/**
* Exits a client of *any* type (user, server, etc)
* from this server. Also, this generates all necessary prototol
* messages that this exit may cause.
*
* This function implicitly exits all other clients depending on
* this connection.
*
* For convenience, this function returns a suitable value for
* m_function return value:
*
* CPTR_KILLED if (cptr == bcptr)
* 0 if (cptr != bcptr)
*
* This function can be called in two ways:
* 1) From before or in parse(), exiting the 'cptr', in which case it was
* invoked as exit_client(cptr, cptr, &me,...), causing it to always
* return CPTR_KILLED.
* 2) Via parse from a m_function call, in which case it was invoked as
* exit_client(cptr, acptr, sptr, ...). Here 'sptr' is known; the client
* that generated the message in a way that we can assume he already
* did remove acptr from memory himself (or in other cases we don't mind
* because he will be delinked.) Or invoked as:
* exit_client(cptr, acptr/sptr, &me, ...) when WE decide this one should
* be removed.
* In general: No generated SQUIT or QUIT should be sent to source link
* sptr->from. And CPTR_KILLED should be returned if cptr got removed (too).
*
* --Run
* @param cptr Connection currently being handled by read_message.
* @param victim Client being killed.
* @param killer Client that made the decision to remove \a victim.
* @param comment Reason for the exit.
* @return CPTR_KILLED if cptr == bcptr, else 0.
*/
int exit_client(struct Client *cptr,
struct Client* victim,
struct Client* killer,
const char* comment)
{
struct Client* acptr = 0;
struct DLink *dlp;
time_t on_for;
char comment1[HOSTLEN + HOSTLEN + 2];
assert(killer);
if (MyConnect(victim))
{
SetFlag(victim, FLAG_CLOSING);
if (feature_bool(FEAT_CONNEXIT_NOTICES) && IsUser(victim))
sendto_opmask_butone(0, SNO_CONNEXIT,
"Client exiting: %s (%s@%s) [%s] [%s] <%s%s>",
cli_name(victim), cli_user(victim)->username,
cli_user(victim)->host, comment,
ircd_ntoa(&cli_ip(victim)),
NumNick(victim) /* two %s's */);
update_load();
on_for = CurrentTime - cli_firsttime(victim);
if (IsUser(victim) || IsUserPort(victim))
auth_send_exit(victim);
if (IsUser(victim))
log_write(LS_USER, L_TRACE, 0, "%Tu %i %s@%s %s %s %s%s %s :%s",
cli_firsttime(victim), on_for,
cli_user(victim)->username, cli_sockhost(victim),
ircd_ntoa(&cli_ip(victim)),
IsAccount(victim) ? cli_username(victim) : "0",
NumNick(victim), /* two %s's */
cli_name(victim), cli_info(victim));
if (victim != cli_from(killer) /* The source knows already */
&& IsClient(victim)) /* Not a Ping struct or Log file */
{
if (IsServer(victim) || IsHandshake(victim))
sendcmdto_one(killer, CMD_SQUIT, victim, "%s 0 :%s", cli_name(&me), comment);
else if (!IsConnecting(victim)) {
if (!IsDead(victim)) {
if (IsServer(victim))
sendcmdto_one(killer, CMD_ERROR, victim,
":Closing Link: %s by %s (%s)", cli_name(victim),
cli_name(killer), comment);
else
sendrawto_one(victim, MSG_ERROR " :Closing Link: %s by %s (%s)",
cli_name(victim),
cli_name(IsServer(killer) ? &his : killer),
comment);
}
}
if ((IsServer(victim) || IsHandshake(victim) || IsConnecting(victim)) &&
(killer == &me || (IsServer(killer) &&
(strncmp(comment, "Leaf-only link", 14) ||
strncmp(comment, "Non-Hub link", 12)))))
{
/*
* Note: check user == user needed to make sure we have the same
* client
*/
if (cli_serv(victim)->user && *(cli_serv(victim))->by &&
(acptr = findNUser(cli_serv(victim)->by))) {
if (cli_user(acptr) == cli_serv(victim)->user) {
sendcmdto_one(&me, CMD_NOTICE, acptr,
"%C :Link with %s canceled: %s", acptr,
cli_name(victim), comment);
}
else {
/*
* not right client, set by to empty string
*/
acptr = 0;
*(cli_serv(victim))->by = '\0';
}
}
if (killer == &me)
sendto_opmask_butone(acptr, SNO_OLDSNO, "Link with %s canceled: %s",
cli_name(victim), comment);
}
}
/*
* Close the Client connection first.
*/
close_connection(victim);
}
if (IsServer(victim))
{
if (feature_bool(FEAT_HIS_NETSPLIT))
strcpy(comment1, "*.net *.split");
else
{
strcpy(comment1, cli_name(cli_serv(victim)->up));
strcat(comment1, " ");
strcat(comment1, cli_name(victim));
}
if (IsUser(killer))
sendto_opmask_butone(killer, SNO_OLDSNO, "%s SQUIT by %s [%s]:",
(cli_user(killer)->server == victim ||
cli_user(killer)->server == cli_serv(victim)->up) ?
"Local" : "Remote",
get_client_name(killer, HIDE_IP),
cli_name(cli_user(killer)->server));
else if (killer != &me && cli_serv(victim)->up != killer)
sendto_opmask_butone(0, SNO_OLDSNO, "Received SQUIT %s from %s :",
cli_name(victim), IsServer(killer) ? cli_name(killer) :
get_client_name(killer, HIDE_IP));
sendto_opmask_butone(0, SNO_NETWORK, "Net break: %C %C (%s)",
cli_serv(victim)->up, victim, comment);
}
/*
* First generate the needed protocol for the other server links
* except the source:
*/
for (dlp = cli_serv(&me)->down; dlp; dlp = dlp->next) {
if (dlp->value.cptr != cli_from(killer) && dlp->value.cptr != victim)
{
if (IsServer(victim))
sendcmdto_one(killer, CMD_SQUIT, dlp->value.cptr, "%s %Tu :%s",
cli_name(victim), cli_serv(victim)->timestamp, comment);
else if (IsUser(victim) && !HasFlag(victim, FLAG_KILLED))
sendcmdto_one(victim, CMD_QUIT, dlp->value.cptr, ":%s", comment);
}
}
/* Then remove the client structures */
if (IsServer(victim))
exit_downlinks(victim, killer, comment1);
exit_one_client(victim, comment);
/*
* cptr can only have been killed if it was cptr itself that got killed here,
* because cptr can never have been a dependent of victim --Run
*/
return (cptr == victim) ? CPTR_KILLED : 0;
}
int m_names(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
struct Channel *chptr;
struct Channel *ch2ptr;
struct Client *c2ptr;
struct Membership* member;
char* s;
char* para = parc > 1 ? parv[1] : 0;
int showingdelayed = 0;
if (parc > 1 && !ircd_strcmp(parv[1], "-D")) {
para = (parc > 2) ? parv[2] : 0;
showingdelayed = NAMES_DEL;
if (parc > 3 && hunt_server_cmd(sptr, CMD_NAMES, cptr, 1, "%s %s %C", 3, parc, parv))
return 0;
} else if (parc > 2 && hunt_server_cmd(sptr, CMD_NAMES, cptr, 1, "%s %C", 2, parc, parv))
return 0;
if (EmptyString(para)) {
send_reply(sptr, RPL_ENDOFNAMES, "*");
return 0;
}
do {
s = strchr(para, ',');
if (s)
*s++ = '\0';
/*
* Special Case 1: "/names 0".
* Full list as per RFC.
*/
if ((*para == '0') || (*para == '\0'))
{
int idx;
int mlen;
int flag;
struct Channel *ch3ptr;
char buf[BUFSIZE];
mlen = strlen(cli_name(&me)) + 10 + strlen(cli_name(sptr));
/* List all visible channels/visible members */
for (ch2ptr = GlobalChannelList; ch2ptr; ch2ptr = ch2ptr->next)
{
if (!ShowChannel(sptr, ch2ptr))
continue; /* Don't show secret chans. */
else if (find_channel_member(sptr, ch2ptr))
do_names(sptr, ch2ptr, showingdelayed|NAMES_ALL); /* Full list if we're in this chan. */
else
do_names(sptr, ch2ptr, showingdelayed|NAMES_VIS);
}
/* List all remaining users on channel '*' */
strcpy(buf, "* * :");
idx = 5;
flag = 0;
for (c2ptr = GlobalClientList; c2ptr; c2ptr = cli_next(c2ptr))
{
int showflag = 0;
if (!IsUser(c2ptr) || (sptr != c2ptr && IsInvisible(c2ptr)))
continue;
member = cli_user(c2ptr)->channel;
while (member)
{
ch3ptr = member->channel;
if (PubChannel(ch3ptr) || find_channel_member(sptr, ch3ptr))
showflag = 1;
member = member->next_channel;
}
if (showflag) /* Have we already shown them? */
continue;
strcpy(buf + idx, cli_name(c2ptr));
idx += strlen(cli_name(c2ptr));
buf[idx++] = ' ';
flag = 1;
if (mlen + idx + NICKLEN + 3 > BUFSIZE) /* space, \r\n\0 */
{
send_reply(sptr, RPL_NAMREPLY, buf);
strcpy(buf, "* * :");
idx = 5;
flag = 0;
}
}
if (flag)
send_reply(sptr, RPL_NAMREPLY, buf);
send_reply(sptr, RPL_ENDOFNAMES, "*");
}
else if ((chptr = FindChannel(para)) != NULL)
{
member = find_member_link(chptr, sptr);
if (member)
{
/*
* Special Case 2: User is on this channel, requesting full names list.
* (As performed with each /join) - ** High frequency usage **
*/
do_names(sptr, chptr, showingdelayed|NAMES_ALL|NAMES_EON);
}
else
{
/*
* Special Case 3: User isn't on this channel, show all visible users, in
* non secret channels.
*/
do_names(sptr, chptr, showingdelayed|NAMES_VIS|NAMES_EON);
}
}
else
send_reply(sptr, RPL_ENDOFNAMES, para);
} while ((para = s) != NULL);
return 1;
}
/*
* m_who - generic message handler
*
* parv[0] = sender prefix
* parv[1] = nickname mask list
* parv[2] = additional selection flag, only 'o' for now.
* and %flags to specify what fields to output
* plus a ,querytype if the t flag is specified
* so the final thing will be like o%tnchu,777
* parv[3] = _optional_ parameter that overrides parv[1]
* This can be used as "/quote who foo % :The Black Hacker
* to find me, parv[3] _can_ contain spaces !.
*/
int m_who(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
{
char *mask; /* The mask we are looking for */
char ch; /* Scratch char register */
struct Channel *chptr; /* Channel to show */
struct Client *acptr; /* Client to show */
int bitsel; /* Mask of selectors to apply */
int matchsel; /* Wich fields the match should apply on */
int counter; /* Query size counter,
initially used to count fields */
int commas; /* Does our mask contain any comma ?
If so is a list.. */
int fields; /* Mask of fields to show */
int isthere = 0; /* When this set the user is member of chptr */
char *nick; /* Single element extracted from
the mask list */
char *p; /* Scratch char pointer */
char *qrt; /* Pointer to the query type */
static char mymask[512]; /* To save the mask before corrupting it */
unsigned int who_marker; /* Used to mark clients we've touched */
/* Let's find where is our mask, and if actually contains something */
mask = ((parc > 1) ? parv[1] : 0);
if (parc > 3 && parv[3])
mask = parv[3];
if (mask && ((mask[0] == '\0') ||
(mask[1] == '\0' && ((mask[0] == '0') || (mask[0] == '*')))))
mask = 0;
/* Evaluate the flags now, we consider the second parameter
as "matchFlags%fieldsToInclude,querytype" */
bitsel = fields = counter = matchsel = 0;
qrt = 0;
if (parc > 2 && parv[2] && *parv[2])
{
p = parv[2];
while (((ch = *(p++))) && (ch != '%') && (ch != ','))
switch (ch)
{
case 'o':
case 'O':
bitsel |= WHOSELECT_OPER;
continue;
case 'x':
case 'X':
if (HasPriv(sptr, PRIV_WHOX))
{
log_write(LS_WHO, L_INFO, LOG_NOSNOTICE, "%#C WHO %s %s", sptr,
(BadPtr(parv[3]) ? parv[1] : parv[3]), parv[2]);
bitsel |= WHOSELECT_EXTRA;
}
continue;
case 'n':
case 'N':
matchsel |= WHO_FIELD_NIC;
continue;
case 'u':
case 'U':
matchsel |= WHO_FIELD_UID;
continue;
case 'h':
case 'H':
matchsel |= WHO_FIELD_HOS;
continue;
case 'i':
case 'I':
matchsel |= WHO_FIELD_NIP;
continue;
case 's':
case 'S':
matchsel |= WHO_FIELD_SER;
continue;
case 'r':
case 'R':
matchsel |= WHO_FIELD_REN;
continue;
case 'a':
case 'A':
matchsel |= WHO_FIELD_ACC;
continue;
}
if (ch == '%')
while ((ch = *p++) && (ch != ','))
{
counter++;
switch (ch)
{
case 'c':
case 'C':
fields |= WHO_FIELD_CHA;
break;
case 'd':
case 'D':
fields |= WHO_FIELD_DIS;
break;
case 'f':
case 'F':
fields |= WHO_FIELD_FLA;
break;
case 'h':
case 'H':
fields |= WHO_FIELD_HOS;
break;
case 'i':
case 'I':
fields |= WHO_FIELD_NIP;
break;
case 'l':
case 'L':
fields |= WHO_FIELD_IDL;
case 'n':
case 'N':
fields |= WHO_FIELD_NIC;
break;
case 'r':
case 'R':
fields |= WHO_FIELD_REN;
break;
case 's':
case 'S':
fields |= WHO_FIELD_SER;
break;
case 't':
case 'T':
fields |= WHO_FIELD_QTY;
break;
case 'u':
case 'U':
fields |= WHO_FIELD_UID;
break;
case 'a':
case 'A':
fields |= WHO_FIELD_ACC;
break;
default:
break;
}
};
if (ch)
qrt = p;
}
if (!matchsel)
matchsel = WHO_FIELD_DEF;
if (!fields)
counter = 7;
if (feature_bool(FEAT_HIS_WHO_SERVERNAME) && !IsAnOper(sptr))
matchsel &= ~WHO_FIELD_SER;
if (qrt && (fields & WHO_FIELD_QTY))
{
p = qrt;
if (!((*p > '9') || (*p < '0')))
p++;
if (!((*p > '9') || (*p < '0')))
p++;
if (!((*p > '9') || (*p < '0')))
p++;
*p = '\0';
}
else
qrt = 0;
/* I'd love to add also a check on the number of matches fields per time */
counter = (2048 / (counter + 4));
if (mask && (strlen(mask) > 510))
mask[510] = '\0';
who_marker = get_client_marker();
commas = (mask && strchr(mask, ','));
/* First treat mask as a list of plain nicks/channels */
if (mask)
{
strcpy(mymask, mask);
for (p = 0, nick = ircd_strtok(&p, mymask, ","); nick;
nick = ircd_strtok(&p, 0, ","))
{
if (IsChannelName(nick) && (chptr = FindChannel(nick)))
{
isthere = (find_channel_member(sptr, chptr) != 0);
if (isthere || SEE_CHANNEL(sptr, chptr, bitsel))
{
struct Membership* member;
for (member = chptr->members; member; member = member->next_member)
{
acptr = member->user;
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if ((acptr != sptr) && (member->status & CHFL_ZOMBIE))
continue;
if (!(isthere || (SEE_USER(sptr, acptr, bitsel))))
continue;
if (!Process(acptr)) /* This can't be moved before other checks */
continue;
if (!(isthere ||
(IsOper(sptr) && (bitsel & WHOSELECT_EXTRA) && HasPriv(sptr, PRIV_SEE_CHAN)) ||
(SHOW_MORE(sptr, counter))))
break;
do_who(sptr, acptr, chptr, fields, qrt);
}
}
}
else
{
if ((acptr = FindUser(nick)) &&
((!(bitsel & WHOSELECT_OPER)) || SeeOper(sptr,acptr)) &&
Process(acptr) && SHOW_MORE(sptr, counter))
{
do_who(sptr, acptr, 0, fields, qrt);
}
}
}
}
/* If we didn't have any comma in the mask treat it as a
real mask and try to match all relevant fields */
if (!(commas || (counter < 1)))
{
int minlen, cset;
static struct in_mask imask;
if (mask)
{
matchcomp(mymask, &minlen, &cset, mask);
if (matchcompIP(&imask, mask))
matchsel &= ~WHO_FIELD_NIP;
if ((minlen > NICKLEN) || !(cset & NTL_IRCNK))
matchsel &= ~WHO_FIELD_NIC;
if ((matchsel & WHO_FIELD_SER) &&
((minlen > HOSTLEN) || (!(cset & NTL_IRCHN))
|| (!markMatchexServer(mymask, minlen))))
matchsel &= ~WHO_FIELD_SER;
if ((minlen > USERLEN) || !(cset & NTL_IRCUI))
matchsel &= ~WHO_FIELD_UID;
if ((minlen > HOSTLEN) || !(cset & NTL_IRCHN))
matchsel &= ~WHO_FIELD_HOS;
}
/* First of all loop through the clients in common channels */
if ((!(counter < 1)) && matchsel) {
struct Membership* member;
struct Membership* chan;
for (chan = cli_user(sptr)->channel; chan; chan = chan->next_channel) {
chptr = chan->channel;
for (member = chptr->members; member; member = member->next_member)
{
acptr = member->user;
if (!(IsUser(acptr) && Process(acptr)))
continue; /* Now Process() is at the beginning, if we fail
we'll never have to show this acptr in this query */
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if ((mask) &&
((!(matchsel & WHO_FIELD_NIC))
|| matchexec(cli_name(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_UID))
|| matchexec(cli_user(acptr)->username, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_SER))
|| (!HasFlag(cli_user(acptr)->server, FLAG_MAP)))
&& ((!(matchsel & WHO_FIELD_HOS))
|| matchexec(cli_user(acptr)->host, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_HOS))
|| !HasSetHost(acptr)
|| !HasHiddenHost(acptr)
|| !IsAnOper(sptr)
|| matchexec(cli_user(acptr)->realhost, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_REN))
|| matchexec(cli_info(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_NIP))
|| ((HasHiddenHost(acptr) || HasSetHost(acptr)) && !IsAnOper(sptr))
|| ((((cli_ip(acptr).s_addr & imask.mask.s_addr) !=
imask.bits.s_addr)) || (imask.fall
&& matchexec(ircd_ntoa((const char*) &(cli_ip(acptr))), mymask, minlen)))))
continue;
if (!SHOW_MORE(sptr, counter))
break;
do_who(sptr, acptr, chptr, fields, qrt);
}
}
}
/* Loop through all clients :-\, if we still have something to match to
and we can show more clients */
if ((!(counter < 1)) && matchsel)
for (acptr = cli_prev(&me); acptr; acptr = cli_prev(acptr))
{
if (!(IsUser(acptr) && Process(acptr)))
continue;
if ((bitsel & WHOSELECT_OPER) && !SeeOper(sptr,acptr))
continue;
if (!(SEE_USER(sptr, acptr, bitsel)))
continue;
if ((mask) &&
((!(matchsel & WHO_FIELD_NIC))
|| matchexec(cli_name(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_UID))
|| matchexec(cli_user(acptr)->username, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_SER))
|| (!HasFlag(cli_user(acptr)->server, FLAG_MAP)))
&& ((!(matchsel & WHO_FIELD_HOS))
|| matchexec(cli_user(acptr)->host, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_HOS))
|| !HasSetHost(acptr)
|| !HasHiddenHost(acptr)
|| !IsAnOper(sptr)
|| matchexec(cli_user(acptr)->realhost, mymask, minlen))
&& ((!(matchsel & WHO_FIELD_REN))
|| matchexec(cli_info(acptr), mymask, minlen))
&& ((!(matchsel & WHO_FIELD_NIP))
|| (HasHiddenHost(acptr) && !IsAnOper(sptr))
|| ((((cli_ip(acptr).s_addr & imask.mask.s_addr) != imask.bits.s_addr))
|| (imask.fall
&& matchexec(ircd_ntoa((const char*) &(cli_ip(acptr))), mymask, minlen)))))
continue;
if (!SHOW_MORE(sptr, counter))
break;
do_who(sptr, acptr, 0, fields, qrt);
}
}
/* Make a clean mask suitable to be sent in the "end of" */
if (mask && (p = strchr(mask, ' ')))
*p = '\0';
send_reply(sptr, RPL_ENDOFWHO, BadPtr(mask) ? "*" : mask);
/* Notify the user if we decided that his query was too long */
if (counter < 0)
send_reply(sptr, ERR_QUERYTOOLONG, "WHO");
return 0;
}
/* Rewritten by Run - 24 sept 94 */
static void exit_one_client(struct Client* bcptr, const char* comment)
{
struct SLink *lp;
struct Ban *bp;
if (cli_serv(bcptr) && cli_serv(bcptr)->client_list) /* Was SetServerYXX called ? */
ClearServerYXX(bcptr); /* Removes server from server_list[] */
if (IsUser(bcptr)) {
/*
* clear out uping requests
*/
if (IsUPing(bcptr))
uping_cancel(bcptr, 0);
/*
* Stop a running /LIST clean
*/
if (MyUser(bcptr) && cli_listing(bcptr)) {
MyFree(cli_listing(bcptr));
cli_listing(bcptr) = NULL;
}
/*
* If a person is on a channel, send a QUIT notice
* to every client (person) on the same channel (so
* that the client can show the "**signoff" message).
* (Note: The notice is to the local clients *only*)
*/
sendcmdto_common_channels_butone(bcptr, CMD_QUIT, NULL, ":%s", comment);
remove_user_from_all_channels(bcptr);
/* Clean up invitefield */
while ((lp = cli_user(bcptr)->invited))
del_invite(bcptr, lp->value.chptr);
/* Clean up silencefield */
while ((bp = cli_user(bcptr)->silence)) {
cli_user(bcptr)->silence = bp->next;
free_ban(bp);
}
/* Clean up snotice lists */
if (MyUser(bcptr))
set_snomask(bcptr, ~0, SNO_DEL);
if (IsInvisible(bcptr)) {
assert(UserStats.inv_clients > 0);
--UserStats.inv_clients;
}
if (IsOper(bcptr)) {
assert(UserStats.opers > 0);
--UserStats.opers;
}
if (MyConnect(bcptr))
Count_clientdisconnects(bcptr, UserStats);
else
Count_remoteclientquits(UserStats, bcptr);
}
else if (IsServer(bcptr))
{
/* Remove downlink list node of uplink */
remove_dlink(&(cli_serv(cli_serv(bcptr)->up))->down, cli_serv(bcptr)->updown);
cli_serv(bcptr)->updown = 0;
if (MyConnect(bcptr))
Count_serverdisconnects(UserStats);
else
Count_remoteserverquits(UserStats);
}
else if (IsMe(bcptr))
{
sendto_opmask_butone(0, SNO_OLDSNO, "ERROR: tried to exit me! : %s",
comment);
return; /* ...must *never* exit self! */
}
else if (IsUnknown(bcptr) || IsConnecting(bcptr) || IsHandshake(bcptr))
Count_unknowndisconnects(UserStats);
/*
* Update IPregistry
*/
if (IsIPChecked(bcptr))
IPcheck_disconnect(bcptr);
/*
* Remove from serv->client_list
* NOTE: user is *always* NULL if this is a server
*/
if (cli_user(bcptr)) {
assert(!IsServer(bcptr));
/* bcptr->user->server->serv->client_list[IndexYXX(bcptr)] = NULL; */
RemoveYXXClient(cli_user(bcptr)->server, cli_yxx(bcptr));
}
/* Remove bcptr from the client list */
#ifdef DEBUGMODE
if (hRemClient(bcptr) != 0)
Debug((DEBUG_ERROR, "%p !in tab %s[%s] %p %p %p %d %d %p",
bcptr, cli_name(bcptr), cli_from(bcptr) ? cli_sockhost(cli_from(bcptr)) : "??host",
cli_from(bcptr), cli_next(bcptr), cli_prev(bcptr), cli_fd(bcptr),
cli_status(bcptr), cli_user(bcptr)));
#else
hRemClient(bcptr);
#endif
remove_client_from_list(bcptr);
}
/** Handle a connection that has sent a valid PASS and SERVER.
* @param cptr New peer server.
* @param aconf Connect block for \a cptr.
* @return Zero.
*/
int server_estab(struct Client *cptr, struct ConfItem *aconf)
{
struct Client* acptr = 0;
const char* inpath;
int i;
assert(0 != cptr);
assert(0 != cli_local(cptr));
inpath = cli_name(cptr);
if (IsUnknown(cptr)) {
if (aconf->passwd[0])
sendrawto_one(cptr, MSG_PASS " :%s", aconf->passwd);
/*
* Pass my info to the new server
*/
sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s +%s6 :%s",
cli_name(&me), cli_serv(&me)->timestamp,
cli_serv(cptr)->timestamp, MAJOR_PROTOCOL, NumServCap(&me),
feature_bool(FEAT_HUB) ? "h" : "",
*(cli_info(&me)) ? cli_info(&me) : "IRCers United");
}
det_confs_butmask(cptr, CONF_SERVER | CONF_UWORLD);
if (!IsHandshake(cptr))
hAddClient(cptr);
SetServer(cptr);
cli_handler(cptr) = SERVER_HANDLER;
Count_unknownbecomesserver(UserStats);
SetBurst(cptr);
/* nextping = CurrentTime; */
/*
* NOTE: check for acptr->user == cptr->serv->user is necessary to insure
* that we got the same one... bleah
*/
if (cli_serv(cptr)->user && *(cli_serv(cptr))->by &&
(acptr = findNUser(cli_serv(cptr)->by))) {
if (cli_user(acptr) == cli_serv(cptr)->user) {
sendcmdto_one(&me, CMD_NOTICE, acptr, "%C :Link with %s established.",
acptr, inpath);
}
else {
/*
* if not the same client, set by to empty string
*/
acptr = 0;
*(cli_serv(cptr))->by = '\0';
}
}
sendto_opmask_butone(acptr, SNO_OLDSNO, "Link with %s established.", inpath);
cli_serv(cptr)->up = &me;
cli_serv(cptr)->updown = add_dlink(&(cli_serv(&me))->down, cptr);
sendto_opmask_butone(0, SNO_NETWORK, "Net junction: %s %s", cli_name(&me),
cli_name(cptr));
SetJunction(cptr);
/*
* Old sendto_serv_but_one() call removed because we now
* need to send different names to different servers
* (domain name matching) Send new server to other servers.
*/
for (i = 0; i <= HighestFd; i++)
{
if (!(acptr = LocalClientArray[i]) || !IsServer(acptr) ||
acptr == cptr || IsMe(acptr))
continue;
if (!match(cli_name(&me), cli_name(cptr)))
continue;
sendcmdto_one(&me, CMD_SERVER, acptr,
"%s 2 0 %Tu J%02u %s%s +%s%s%s :%s", cli_name(cptr),
cli_serv(cptr)->timestamp, Protocol(cptr), NumServCap(cptr),
IsHub(cptr) ? "h" : "", IsService(cptr) ? "s" : "",
IsIPv6(cptr) ? "6" : "", cli_info(cptr));
}
/* Send these as early as possible so that glined users/juped servers can
* be removed from the network while the remote server is still chewing
* our burst.
*/
gline_burst(cptr);
jupe_burst(cptr);
/*
* Pass on my client information to the new server
*
* First, pass only servers (idea is that if the link gets
* canceled because the server was already there,
* there are no NICK's to be canceled...). Of course,
* if cancellation occurs, all this info is sent anyway,
* and I guess the link dies when a read is attempted...? --msa
*
* Note: Link cancellation to occur at this point means
* that at least two servers from my fragment are building
* up connection this other fragment at the same time, it's
* a race condition, not the normal way of operation...
*/
for (acptr = &me; acptr; acptr = cli_prev(acptr)) {
/* acptr->from == acptr for acptr == cptr */
if (cli_from(acptr) == cptr)
continue;
if (IsServer(acptr)) {
const char* protocol_str;
if (Protocol(acptr) > 9)
protocol_str = IsBurst(acptr) ? "J" : "P";
else
protocol_str = IsBurst(acptr) ? "J0" : "P0";
if (0 == match(cli_name(&me), cli_name(acptr)))
continue;
sendcmdto_one(cli_serv(acptr)->up, CMD_SERVER, cptr,
"%s %d 0 %Tu %s%u %s%s +%s%s%s :%s", cli_name(acptr),
cli_hopcount(acptr) + 1, cli_serv(acptr)->timestamp,
protocol_str, Protocol(acptr), NumServCap(acptr),
IsHub(acptr) ? "h" : "", IsService(acptr) ? "s" : "",
IsIPv6(acptr) ? "6" : "", cli_info(acptr));
}
}
for (acptr = &me; acptr; acptr = cli_prev(acptr))
{
/* acptr->from == acptr for acptr == cptr */
if (cli_from(acptr) == cptr)
continue;
if (IsUser(acptr))
{
char xxx_buf[25];
char *s = umode_str(acptr);
sendcmdto_one(cli_user(acptr)->server, CMD_NICK, cptr,
"%s %d %Tu %s %s %s%s%s%s %s%s :%s",
cli_name(acptr), cli_hopcount(acptr) + 1, cli_lastnick(acptr),
cli_user(acptr)->username, cli_user(acptr)->realhost,
*s ? "+" : "", s, *s ? " " : "",
iptobase64(xxx_buf, &cli_ip(acptr), sizeof(xxx_buf), IsIPv6(cptr)),
NumNick(acptr), cli_info(acptr));
}
}
/*
* Last, send the BURST.
* (Or for 2.9 servers: pass all channels plus statuses)
*/
{
struct Channel *chptr;
for (chptr = GlobalChannelList; chptr; chptr = chptr->next)
send_channel_modes(cptr, chptr);
}
sendcmdto_one(&me, CMD_END_OF_BURST, cptr, "");
return 0;
}
/** Check for clients that have not sent a ping response recently.
* Reschedules itself to run again at the appropriate time.
* @param[in] ev Timer event (ignored).
*/
static void check_pings(struct Event* ev) {
int expire = 0;
int next_check = CurrentTime;
int max_ping = 0;
int i;
assert(ET_EXPIRE == ev_type(ev));
assert(0 != ev_timer(ev));
next_check += feature_int(FEAT_PINGFREQUENCY);
/* Scan through the client table */
for (i=0; i <= HighestFd; i++) {
struct Client *cptr = LocalClientArray[i];
if (!cptr)
continue;
assert(&me != cptr); /* I should never be in the local client array! */
/* Remove dead clients. */
if (IsDead(cptr)) {
exit_client(cptr, cptr, &me, cli_info(cptr));
continue;
}
max_ping = IsRegistered(cptr) ? client_get_ping(cptr) :
feature_int(FEAT_CONNECTTIMEOUT);
Debug((DEBUG_DEBUG, "check_pings(%s)=status:%s limit: %d current: %d",
cli_name(cptr),
IsPingSent(cptr) ? "[Ping Sent]" : "[]",
max_ping, (int)(CurrentTime - cli_lasttime(cptr))));
/* If it's a server and we have not sent an AsLL lately, do so. */
if (IsServer(cptr)) {
if (CurrentTime - cli_serv(cptr)->asll_last >= max_ping) {
char *asll_ts;
SetPingSent(cptr);
cli_serv(cptr)->asll_last = CurrentTime;
expire = cli_serv(cptr)->asll_last + max_ping;
asll_ts = militime_float(NULL);
sendcmdto_prio_one(&me, CMD_PING, cptr, "!%s %s %s", asll_ts,
cli_name(cptr), asll_ts);
}
expire = cli_serv(cptr)->asll_last + max_ping;
if (expire < next_check)
next_check = expire;
}
/* Ok, the thing that will happen most frequently, is that someone will
* have sent something recently. Cover this first for speed.
* --
* If it's an unregistered client and hasn't managed to register within
* max_ping then it's obviously having problems (broken client) or it's
* just up to no good, so we won't skip it, even if its been sending
* data to us.
* -- hikari
*/
if ((CurrentTime-cli_lasttime(cptr) < max_ping) && IsRegistered(cptr)) {
expire = cli_lasttime(cptr) + max_ping;
if (expire < next_check)
next_check = expire;
continue;
}
/* Unregistered clients pingout after max_ping seconds, they don't
* get given a second chance - if they were then people could not quite
* finish registration and hold resources without being subject to k/g
* lines
*/
if (!IsRegistered(cptr)) {
assert(!IsServer(cptr));
/* If client authorization time has expired, ask auth whether they
* should be checked again later. */
if ((CurrentTime-cli_firsttime(cptr) >= max_ping)
&& auth_ping_timeout(cptr))
continue;
/* OK, they still have enough time left, so we'll just skip to the
* next client. Set the next check to be when their time is up, if
* that's before the currently scheduled next check -- hikari */
expire = cli_firsttime(cptr) + max_ping;
if (expire < next_check)
next_check = expire;
continue;
}
/* Quit the client after max_ping*2 - they should have answered by now */
if (CurrentTime-cli_lasttime(cptr) >= (max_ping*2) )
{
/* If it was a server, then tell ops about it. */
if (IsServer(cptr) || IsConnecting(cptr) || IsHandshake(cptr))
sendto_opmask_butone(0, SNO_OLDSNO,
"No response from %s, closing link",
cli_name(cptr));
exit_client_msg(cptr, cptr, &me, "Ping timeout");
continue;
}
if (!IsPingSent(cptr))
{
/* If we haven't PINGed the connection and we haven't heard from it in a
* while, PING it to make sure it is still alive.
*/
SetPingSent(cptr);
/* If we're late in noticing don't hold it against them :) */
cli_lasttime(cptr) = CurrentTime - max_ping;
if (IsUser(cptr))
sendrawto_one(cptr, MSG_PING " :%s", cli_name(&me));
else
sendcmdto_prio_one(&me, CMD_PING, cptr, ":%s", cli_name(&me));
}
expire = cli_lasttime(cptr) + max_ping * 2;
if (expire < next_check)
next_check=expire;
}
assert(next_check >= CurrentTime);
Debug((DEBUG_DEBUG, "[%i] check_pings() again in %is",
CurrentTime, next_check-CurrentTime));
timer_add(&ping_timer, check_pings, 0, TT_ABSOLUTE, next_check);
}
/** Read a 'packet' of data from a connection and process it. Read in
* 8k chunks to give a better performance rating (for server
* connections). Do some tricky stuff for client connections to make
* sure they don't do any flooding >:-) -avalon
* @param cptr Client from which to read data.
* @param socket_ready If non-zero, more data can be read from the client's socket.
* @return Positive number on success, zero on connection-fatal failure, negative
* if user is killed.
*/
static int read_packet(struct Client *cptr, int socket_ready)
{
unsigned int dolen = 0;
unsigned int length = 0;
if (socket_ready &&
!(IsUser(cptr) &&
DBufLength(&(cli_recvQ(cptr))) > feature_uint(FEAT_CLIENT_FLOOD))) {
#if defined(USE_SSL)
switch (client_recv(cptr, readbuf, sizeof(readbuf), &length)) {
#else
switch (os_recv_nonb(cli_fd(cptr), readbuf, sizeof(readbuf), &length)) {
#endif
case IO_SUCCESS:
if (length)
{
cli_lasttime(cptr) = CurrentTime;
ClearPingSent(cptr);
ClrFlag(cptr, FLAG_NONL);
if (cli_lasttime(cptr) > cli_since(cptr))
cli_since(cptr) = cli_lasttime(cptr);
}
break;
case IO_BLOCKED:
break;
case IO_FAILURE:
cli_error(cptr) = errno;
/* SetFlag(cptr, FLAG_DEADSOCKET); */
return 0;
}
}
/*
* For server connections, we process as many as we can without
* worrying about the time of day or anything :)
*/
if (length > 0 && IsServer(cptr))
return server_dopacket(cptr, readbuf, length);
else if (length > 0 && (IsHandshake(cptr) || IsConnecting(cptr)))
return connect_dopacket(cptr, readbuf, length);
else
{
/*
* Before we even think of parsing what we just read, stick
* it on the end of the receive queue and do it when its
* turn comes around.
*/
if (length > 0 && dbuf_put(cptr, &(cli_recvQ(cptr)), readbuf, length) == 0)
return exit_client(cptr, cptr, &me, "dbuf_put fail");
if ((DBufLength(&(cli_recvQ(cptr))) > feature_uint(FEAT_CLIENT_FLOOD))
&& !IsChannelService(cptr))
return exit_client(cptr, cptr, &me, "Excess Flood");
while (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
(IsTrusted(cptr) || IsChannelService(cptr) || cli_since(cptr) - CurrentTime < 10))
{
dolen = dbuf_getmsg(&(cli_recvQ(cptr)), cli_buffer(cptr), BUFSIZE);
/*
* Devious looking...whats it do ? well..if a client
* sends a *long* message without any CR or LF, then
* dbuf_getmsg fails and we pull it out using this
* loop which just gets the next 512 bytes and then
* deletes the rest of the buffer contents.
* -avalon
*/
if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else
{
/* More than 512 bytes in the line - drop the input and yell
* at the client.
*/
DBufClear(&(cli_recvQ(cptr)));
send_reply(cptr, ERR_INPUTTOOLONG);
}
}
else if (client_dopacket(cptr, dolen) == CPTR_KILLED)
return CPTR_KILLED;
/*
* If it has become registered as a Server
* then skip the per-message parsing below.
*/
if (IsHandshake(cptr) || IsServer(cptr))
{
while (-1)
{
dolen = dbuf_get(&(cli_recvQ(cptr)), readbuf, sizeof(readbuf));
if (dolen <= 0)
return 1;
else if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else {
DBufClear(&(cli_recvQ(cptr)));
/* send_reply(cptr, ERR_INPUTTOOLONG); */
}
}
else if ((IsServer(cptr) &&
server_dopacket(cptr, readbuf, dolen) == CPTR_KILLED) ||
(!IsServer(cptr) &&
connect_dopacket(cptr, readbuf, dolen) == CPTR_KILLED))
return CPTR_KILLED;
}
}
}
/* If there's still data to process, wait 2 seconds first */
if (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
!t_onqueue(&(cli_proc(cptr))))
{
Debug((DEBUG_LIST, "Adding client process timer for %C", cptr));
cli_freeflag(cptr) |= FREEFLAG_TIMER;
timer_add(&(cli_proc(cptr)), client_timer_callback, cli_connect(cptr),
TT_RELATIVE, 2);
}
}
return 1;
}
/** Start a connection to another server.
* @param aconf Connect block data for target server.
* @param by Client who requested the connection (if any).
* @return Non-zero on success; zero on failure.
*/
int connect_server(struct ConfItem* aconf, struct Client* by)
{
struct Client* cptr = 0;
assert(0 != aconf);
if (aconf->dns_pending) {
sendto_opmask(0, SNO_OLDSNO, "Server %s connect DNS pending",
aconf->name);
return 0;
}
Debug((DEBUG_NOTICE, "Connect to %s[@%s]", aconf->name,
ircd_ntoa(&aconf->address.addr)));
if ((cptr = FindClient(aconf->name))) {
if (IsServer(cptr) || IsMe(cptr)) {
sendto_opmask(0, SNO_OLDSNO, "Server %s already present from %s",
aconf->name, cli_name(cli_from(cptr)));
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Server %s already present "
"from %s", by, aconf->name, cli_name(cli_from(cptr)));
}
return 0;
}
else if (IsHandshake(cptr) || IsConnecting(cptr)) {
if (by && IsUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connection to %s already in "
"progress", by, cli_name(cptr));
}
return 0;
}
}
/*
* If we don't know the IP# for this host and it is a hostname and
* not a ip# string, then try and find the appropriate host record.
*/
if (!irc_in_addr_valid(&aconf->address.addr)
&& !ircd_aton(&aconf->address.addr, aconf->host)) {
char buf[HOSTLEN + 1];
host_from_uh(buf, aconf->host, HOSTLEN);
gethost_byname(buf, connect_dns_callback, aconf);
aconf->dns_pending = 1;
return 0;
}
cptr = make_client(NULL, STAT_UNKNOWN_SERVER);
/*
* Copy these in so we have something for error detection.
*/
ircd_strncpy(cli_name(cptr), aconf->name, HOSTLEN);
ircd_strncpy(cli_sockhost(cptr), aconf->host, HOSTLEN);
/*
* Attach config entries to client here rather than in
* completed_connection. This to avoid null pointer references
*/
attach_confs_byhost(cptr, aconf->host, CONF_SERVER);
if (!find_conf_byhost(cli_confs(cptr), aconf->host, CONF_SERVER)) {
sendto_opmask(0, SNO_OLDSNO, "Host %s is not enabled for "
"connecting: no Connect block", aconf->name);
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connect to host %s failed: no "
"Connect block", by, aconf->name);
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* attempt to connect to the server in the conf line
*/
if (!connect_inet(aconf, cptr)) {
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Couldn't connect to %s", by,
cli_name(cptr));
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* NOTE: if we're here we have a valid C:Line and the client should
* have started the connection and stored the remote address/port and
* ip address name in itself
*
* The socket has been connected or connect is in progress.
*/
make_server(cptr);
if (by && IsUser(by)) {
ircd_snprintf(0, cli_serv(cptr)->by, sizeof(cli_serv(cptr)->by), "%s%s",
NumNick(by));
assert(0 == cli_serv(cptr)->user);
cli_serv(cptr)->user = cli_user(by);
cli_user(by)->refcnt++;
}
else {
*(cli_serv(cptr))->by = '\0';
/* strcpy(cptr->serv->by, "Auto"); */
}
cli_serv(cptr)->up = &me;
SetConnecting(cptr);
if (cli_fd(cptr) > HighestFd)
HighestFd = cli_fd(cptr);
LocalClientArray[cli_fd(cptr)] = cptr;
Count_newunknown(UserStats);
/* Actually we lie, the connect hasn't succeeded yet, but we have a valid
* cptr, so we register it now.
* Maybe these two calls should be merged.
*/
add_client_to_list(cptr);
hAddClient(cptr);
/* nextping = CurrentTime; */
return (s_state(&cli_socket(cptr)) == SS_CONNECTED) ?
completed_connection(cptr) : 1;
}
/** Find the real hostname for the host running the server (or one which
* matches the server's name) and its primary IP#. Hostname is stored
* in the client structure passed as a pointer.
*/
void init_server_identity(void)
{
const struct LocalConf* conf = conf_get_local();
assert(0 != conf);
ircd_strncpy(cli_name(&me), conf->name, HOSTLEN);
SetYXXServerName(&me, conf->numeric);
}
/** Process events on a client socket.
* @param ev Socket event structure that has a struct Connection as
* its associated data.
*/
static void client_sock_callback(struct Event* ev)
{
struct Client* cptr;
struct Connection* con;
char *fmt = "%s";
char *fallback = 0;
assert(0 != ev_socket(ev));
assert(0 != s_data(ev_socket(ev)));
con = (struct Connection*) s_data(ev_socket(ev));
assert(0 != con_client(con) || ev_type(ev) == ET_DESTROY);
cptr = con_client(con);
assert(0 == cptr || con == cli_connect(cptr));
switch (ev_type(ev)) {
case ET_DESTROY:
con_freeflag(con) &= ~FREEFLAG_SOCKET;
if (!con_freeflag(con) && !cptr)
free_connection(con);
#if defined(USE_SSL)
ssl_free(ev_socket(ev));
#endif
break;
case ET_CONNECT: /* socket connection completed */
if (!completed_connection(cptr) || IsDead(cptr))
fallback = cli_info(cptr);
break;
case ET_ERROR: /* an error occurred */
fallback = cli_info(cptr);
cli_error(cptr) = ev_data(ev);
/* If the OS told us we have a bad file descriptor, we should
* record that for future reference.
*/
if (cli_error(cptr) == EBADF)
cli_fd(cptr) = -1;
if (s_state(&(con_socket(con))) == SS_CONNECTING) {
completed_connection(cptr);
/* for some reason, the os_get_sockerr() in completed_connection()
* can return 0 even when ev_data(ev) indicates a real error, so
* re-assign the client error here.
*/
cli_error(cptr) = ev_data(ev);
break;
}
/*FALLTHROUGH*/
case ET_EOF: /* end of file on socket */
Debug((DEBUG_ERROR, "READ ERROR: fd = %d %d", cli_fd(cptr),
cli_error(cptr)));
SetFlag(cptr, FLAG_DEADSOCKET);
if ((IsServer(cptr) || IsHandshake(cptr)) && cli_error(cptr) == 0) {
exit_client_msg(cptr, cptr, &me, "Server %s closed the connection (%s)",
cli_name(cptr), cli_serv(cptr)->last_error_msg);
return;
} else {
fmt = "Read error: %s";
fallback = "EOF from client";
}
break;
case ET_WRITE: /* socket is writable */
ClrFlag(cptr, FLAG_BLOCKED);
if (cli_listing(cptr) && MsgQLength(&(cli_sendQ(cptr))) < 2048)
list_next_channels(cptr);
Debug((DEBUG_SEND, "Sending queued data to %C", cptr));
send_queued(cptr);
break;
case ET_READ: /* socket is readable */
if (!IsDead(cptr)) {
Debug((DEBUG_DEBUG, "Reading data from %C", cptr));
if (read_packet(cptr, 1) == 0) /* error while reading packet */
fallback = "EOF from client";
}
break;
default:
assert(0 && "Unrecognized socket event in client_sock_callback()");
break;
}
assert(0 == cptr || 0 == cli_connect(cptr) || con == cli_connect(cptr));
if (fallback) {
const char* msg = (cli_error(cptr)) ? strerror(cli_error(cptr)) : fallback;
if (!msg)
msg = "Unknown error";
exit_client_msg(cptr, cptr, &me, fmt, msg);
}
}
/** Process a timer on client socket.
* @param ev Timer event that has a struct Connection as its
* associated data.
*/
static void client_timer_callback(struct Event* ev)
{
struct Client* cptr;
struct Connection* con;
assert(0 != ev_timer(ev));
assert(0 != t_data(ev_timer(ev)));
assert(ET_DESTROY == ev_type(ev) || ET_EXPIRE == ev_type(ev));
con = (struct Connection*) t_data(ev_timer(ev));
assert(0 != con_client(con) || ev_type(ev) == ET_DESTROY);
cptr = con_client(con);
assert(0 == cptr || con == cli_connect(cptr));
if (ev_type(ev)== ET_DESTROY) {
con_freeflag(con) &= ~FREEFLAG_TIMER; /* timer has expired... */
if (!con_freeflag(con) && !cptr)
free_connection(con); /* client is being destroyed */
} else {
Debug((DEBUG_LIST, "Client process timer for %C expired; processing",
cptr));
read_packet(cptr, 0); /* read_packet will re-add timer if needed */
}
assert(0 == cptr || 0 == cli_connect(cptr) || con == cli_connect(cptr));
}
/** Attempt to send a sequence of bytes to the connection.
* As a side effect, updates \a cptr's FLAG_BLOCKED setting
* and sendB/sendK fields.
* @param cptr Client that should receive data.
* @param buf Message buffer to send to client.
* @return Negative on connection-fatal error; otherwise
* number of bytes sent.
*/
unsigned int deliver_it(struct Client *cptr, struct MsgQ *buf)
{
unsigned int bytes_written = 0;
unsigned int bytes_count = 0;
assert(0 != cptr);
#if defined(USE_SSL)
switch (client_sendv(cptr, buf, &bytes_count, &bytes_written)) {
#else
switch (os_sendv_nonb(cli_fd(cptr), buf, &bytes_count, &bytes_written)) {
#endif
case IO_SUCCESS:
ClrFlag(cptr, FLAG_BLOCKED);
cli_sendB(cptr) += bytes_written;
cli_sendB(&me) += bytes_written;
/* A partial write implies that future writes will block. */
if (bytes_written < bytes_count)
SetFlag(cptr, FLAG_BLOCKED);
break;
case IO_BLOCKED:
SetFlag(cptr, FLAG_BLOCKED);
break;
case IO_FAILURE:
cli_error(cptr) = errno;
SetFlag(cptr, FLAG_DEADSOCKET);
break;
}
return bytes_written;
}
/** Complete non-blocking connect()-sequence. Check access and
* terminate connection, if trouble detected.
* @param cptr Client to which we have connected, with all ConfItem structs attached.
* @return Zero on failure (caller should exit_client()), non-zero on success.
*/
static int completed_connection(struct Client* cptr)
{
struct ConfItem *aconf;
time_t newts;
struct Client *acptr;
int i;
#if defined(USE_SSL)
char *sslfp;
int r;
#endif
assert(0 != cptr);
/*
* get the socket status from the fd first to check if
* connection actually succeeded
*/
if ((cli_error(cptr) = os_get_sockerr(cli_fd(cptr)))) {
const char* msg = strerror(cli_error(cptr));
if (!msg)
msg = "Unknown error";
sendto_opmask(0, SNO_OLDSNO, "Connection failed to %s: %s",
cli_name(cptr), msg);
return 0;
}
if (!(aconf = find_conf_byname(cli_confs(cptr), cli_name(cptr), CONF_SERVER))) {
sendto_opmask(0, SNO_OLDSNO, "Lost Server Line for %s", cli_name(cptr));
return 0;
}
#if defined(USE_SSL)
if (aconf->flags & CONF_SSL) {
r = ssl_connect(&(cli_socket(cptr)));
if (r == -1) {
sendto_opmask(0, SNO_OLDSNO, "Connection failed to %s: SSL error",
cli_name(cptr));
return 0;
} else if (r == 0)
return 1;
sslfp = ssl_get_fingerprint(cli_socket(cptr).s_ssl);
if (sslfp)
ircd_strncpy(cli_sslclifp(cptr), sslfp, BUFSIZE+1);
SetSSL(cptr);
}
#endif
if (s_state(&(cli_socket(cptr))) == SS_CONNECTING)
socket_state(&(cli_socket(cptr)), SS_CONNECTED);
if (!EmptyString(aconf->passwd))
sendrawto_one(cptr, MSG_PASS " :%s", aconf->passwd);
/*
* Create a unique timestamp
*/
newts = TStime();
for (i = HighestFd; i > -1; --i) {
if ((acptr = LocalClientArray[i]) &&
(IsServer(acptr) || IsHandshake(acptr))) {
if (cli_serv(acptr)->timestamp >= newts)
newts = cli_serv(acptr)->timestamp + 1;
}
}
assert(0 != cli_serv(cptr));
cli_serv(cptr)->timestamp = newts;
SetHandshake(cptr);
/*
* Make us timeout after twice the timeout for DNS look ups
*/
cli_lasttime(cptr) = CurrentTime;
ClearPingSent(cptr);
/* TODO: NEGOCIACION
envia_config_req(cptr);
*/
sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s +%s6 :%s",
cli_name(&me), cli_serv(&me)->timestamp, newts,
MAJOR_PROTOCOL, NumServCap(&me),
feature_bool(FEAT_HUB) ? "h" : "", cli_info(&me));
#if defined(DDB)
ddb_burst(cptr);
#endif
return (IsDead(cptr)) ? 0 : 1;
}
/** Close the physical connection. Side effects: MyConnect(cptr)
* becomes false and cptr->from becomes NULL.
* @param cptr Client to disconnect.
*/
void close_connection(struct Client *cptr)
{
struct ConfItem* aconf;
if (IsServer(cptr)) {
ServerStats->is_sv++;
ServerStats->is_sbs += cli_sendB(cptr);
ServerStats->is_sbr += cli_receiveB(cptr);
ServerStats->is_sti += CurrentTime - cli_firsttime(cptr);
/*
* If the connection has been up for a long amount of time, schedule
* a 'quick' reconnect, else reset the next-connect cycle.
*/
if ((aconf = find_conf_exact(cli_name(cptr), cptr, CONF_SERVER))) {
/*
* Reschedule a faster reconnect, if this was a automatically
* connected configuration entry. (Note that if we have had
* a rehash in between, the status has been changed to
* CONF_ILLEGAL). But only do this if it was a "good" link.
*/
aconf->hold = CurrentTime;
aconf->hold += ((aconf->hold - cli_since(cptr) >
feature_int(FEAT_HANGONGOODLINK)) ?
feature_int(FEAT_HANGONRETRYDELAY) : ConfConFreq(aconf));
/* if (nextconnect > aconf->hold) */
/* nextconnect = aconf->hold; */
}
}
else if (IsUser(cptr)) {
ServerStats->is_cl++;
ServerStats->is_cbs += cli_sendB(cptr);
ServerStats->is_cbr += cli_receiveB(cptr);
ServerStats->is_cti += CurrentTime - cli_firsttime(cptr);
}
else
ServerStats->is_ni++;
#if defined(USE_ZLIB)
/*
* Siempre es una conexion nuestra
*/
if (cli_connect(cptr)->zlib_negociation & ZLIB_IN) {
inflateEnd(cli_connect(cptr)->comp_in);
MyFree(cli_connect(cptr)->comp_in);
}
if (cli_connect(cptr)->zlib_negociation & ZLIB_OUT) {
deflateEnd(cli_connect(cptr)->comp_out);
MyFree(cli_connect(cptr)->comp_out);
}
#endif
if (-1 < cli_fd(cptr)) {
flush_connections(cptr);
LocalClientArray[cli_fd(cptr)] = 0;
close(cli_fd(cptr));
socket_del(&(cli_socket(cptr))); /* queue a socket delete */
cli_fd(cptr) = -1;
cli_freeflag(cptr) &= ~FREEFLAG_SOCKET;
}
SetFlag(cptr, FLAG_DEADSOCKET);
MsgQClear(&(cli_sendQ(cptr)));
client_drop_sendq(cli_connect(cptr));
DBufClear(&(cli_recvQ(cptr)));
memset(cli_passwd(cptr), 0, sizeof(cli_passwd(cptr)));
set_snomask(cptr, 0, SNO_SET);
det_confs_butmask(cptr, 0);
if (cli_listener(cptr)) {
release_listener(cli_listener(cptr));
cli_listener(cptr) = 0;
}
for ( ; HighestFd > 0; --HighestFd) {
if (LocalClientArray[HighestFd])
break;
}
}
/** Close all unregistered connections.
* @param source Oper who requested the close.
* @return Number of closed connections.
*/
int net_close_unregistered_connections(struct Client* source)
{
int i;
struct Client* cptr;
int count = 0;
assert(0 != source);
for (i = HighestFd; i > 0; --i) {
if ((cptr = LocalClientArray[i]) && !IsRegistered(cptr)) {
send_reply(source, RPL_CLOSING, get_client_name(source, HIDE_IP));
exit_client(source, cptr, &me, "Oper Closing");
++count;
}
}
return count;
}
/** Start a connection to another server.
* @param aconf Connect block data for target server.
* @param by Client who requested the connection (if any).
* @return Non-zero on success; zero on failure.
*/
int connect_server(struct ConfItem* aconf, struct Client* by)
{
struct Client* cptr = 0;
assert(0 != aconf);
if (aconf->dns_pending) {
sendto_opmask_butone(0, SNO_OLDSNO, "Server %s connect DNS pending",
aconf->name);
return 0;
}
Debug((DEBUG_NOTICE, "Connect to %s[@%s]", aconf->name,
ircd_ntoa(&aconf->address.addr)));
if ((cptr = FindClient(aconf->name))) {
if (IsServer(cptr) || IsMe(cptr)) {
sendto_opmask_butone(0, SNO_OLDSNO, "Server %s already present from %s",
aconf->name, cli_name(cli_from(cptr)));
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Server %s already present "
"from %s", by, aconf->name, cli_name(cli_from(cptr)));
}
return 0;
}
else if (IsHandshake(cptr) || IsConnecting(cptr)) {
if (by && IsUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connection to %s already in "
"progress", by, cli_name(cptr));
}
return 0;
}
}
/*
* If we don't know the IP# for this host and it is a hostname and
* not a ip# string, then try and find the appropriate host record.
*/
if (!irc_in_addr_valid(&aconf->address.addr)
&& !ircd_aton(&aconf->address.addr, aconf->host)) {
char buf[HOSTLEN + 1];
host_from_uh(buf, aconf->host, HOSTLEN);
gethost_byname(buf, connect_dns_callback, aconf);
aconf->dns_pending = 1;
return 0;
}
cptr = make_client(NULL, STAT_UNKNOWN_SERVER);
/*
* Copy these in so we have something for error detection.
*/
ircd_strncpy(cli_name(cptr), aconf->name, HOSTLEN);
ircd_strncpy(cli_sockhost(cptr), aconf->host, HOSTLEN);
/*
* Attach config entries to client here rather than in
* completed_connection. This to avoid null pointer references
*/
attach_confs_byhost(cptr, aconf->host, CONF_SERVER);
if (!find_conf_byhost(cli_confs(cptr), aconf->host, CONF_SERVER)) {
sendto_opmask_butone(0, SNO_OLDSNO, "Host %s is not enabled for "
"connecting: no Connect block", aconf->name);
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connect to host %s failed: no "
"Connect block", by, aconf->name);
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* attempt to connect to the server in the conf line
*/
if (!connect_inet(aconf, cptr)) {
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Couldn't connect to %s", by,
cli_name(cptr));
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* NOTE: if we're here we have a valid C:Line and the client should
* have started the connection and stored the remote address/port and
* ip address name in itself
*
* The socket has been connected or connect is in progress.
*/
make_server(cptr);
if (by && IsUser(by)) {
ircd_snprintf(0, cli_serv(cptr)->by, sizeof(cli_serv(cptr)->by), "%s%s",
NumNick(by));
assert(0 == cli_serv(cptr)->user);
cli_serv(cptr)->user = cli_user(by);
cli_user(by)->refcnt++;
}
else {
*(cli_serv(cptr))->by = '\0';
/* strcpy(cptr->serv->by, "Auto"); */
}
cli_serv(cptr)->up = &me;
SetConnecting(cptr);
if (cli_fd(cptr) > HighestFd)
HighestFd = cli_fd(cptr);
LocalClientArray[cli_fd(cptr)] = cptr;
Count_newunknown(UserStats);
/* Actually we lie, the connect hasn't succeeded yet, but we have a valid
* cptr, so we register it now.
* Maybe these two calls should be merged.
*/
add_client_to_list(cptr);
hAddClient(cptr);
/* nextping = CurrentTime; */
return (s_state(&cli_socket(cptr)) == SS_CONNECTED) ?
completed_connection(cptr) : 1;
}
/** Read a 'packet' of data from a connection and process it. Read in
* 8k chunks to give a better performance rating (for server
* connections). Do some tricky stuff for client connections to make
* sure they don't do any flooding >:-) -avalon
* @param cptr Client from which to read data.
* @param socket_ready If non-zero, more data can be read from the client's socket.
* @return Positive number on success, zero on connection-fatal failure, negative
* if user is killed.
*/
static int read_packet(struct Client *cptr, int socket_ready)
{
unsigned int dolen = 0;
unsigned int length = 0;
if (socket_ready &&
!(IsUser(cptr) && !IsOper(cptr) &&
DBufLength(&(cli_recvQ(cptr))) > feature_int(FEAT_CLIENT_FLOOD))) {
switch (os_recv_nonb(cli_fd(cptr), readbuf, sizeof(readbuf), &length)) {
case IO_SUCCESS:
if (length)
{
cli_lasttime(cptr) = CurrentTime;
ClearPingSent(cptr);
ClrFlag(cptr, FLAG_NONL);
if (cli_lasttime(cptr) > cli_since(cptr))
cli_since(cptr) = cli_lasttime(cptr);
}
break;
case IO_BLOCKED:
break;
case IO_FAILURE:
cli_error(cptr) = errno;
/* SetFlag(cptr, FLAG_DEADSOCKET); */
return 0;
}
}
/*
* For server connections, we process as many as we can without
* worrying about the time of day or anything :)
*/
if (length > 0 && IsServer(cptr))
return server_dopacket(cptr, readbuf, length);
else if (length > 0 && (IsHandshake(cptr) || IsConnecting(cptr)))
return connect_dopacket(cptr, readbuf, length);
else
{
/*
* Before we even think of parsing what we just read, stick
* it on the end of the receive queue and do it when its
* turn comes around.
*/
if (length > 0 && dbuf_put(&(cli_recvQ(cptr)), readbuf, length) == 0)
return exit_client(cptr, cptr, &me, "dbuf_put fail");
if (IsUser(cptr)) {
if (DBufLength(&(cli_recvQ(cptr))) > feature_int(FEAT_CLIENT_FLOOD)
&& !IsOper(cptr))
return exit_client(cptr, cptr, &me, "Excess Flood");
}
while (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
(IsTrusted(cptr) || cli_since(cptr) - CurrentTime < 10))
{
dolen = dbuf_getmsg(&(cli_recvQ(cptr)), cli_buffer(cptr), BUFSIZE);
/*
* Devious looking...whats it do ? well..if a client
* sends a *long* message without any CR or LF, then
* dbuf_getmsg fails and we pull it out using this
* loop which just gets the next 512 bytes and then
* deletes the rest of the buffer contents.
* -avalon
*/
if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else
{
/* More than 512 bytes in the line - drop the input and yell
* at the client.
*/
DBufClear(&(cli_recvQ(cptr)));
send_reply(cptr, ERR_INPUTTOOLONG);
}
}
else if (client_dopacket(cptr, dolen) == CPTR_KILLED)
return CPTR_KILLED;
/*
* If it has become registered as a Server
* then skip the per-message parsing below.
*/
if (IsHandshake(cptr) || IsServer(cptr))
{
while (-1)
{
dolen = dbuf_get(&(cli_recvQ(cptr)), readbuf, sizeof(readbuf));
if (dolen <= 0)
return 1;
else if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else
DBufClear(&(cli_recvQ(cptr)));
}
else if ((IsServer(cptr) &&
server_dopacket(cptr, readbuf, dolen) == CPTR_KILLED) ||
(!IsServer(cptr) &&
connect_dopacket(cptr, readbuf, dolen) == CPTR_KILLED))
return CPTR_KILLED;
}
}
}
/* If there's still data to process, wait 2 seconds first */
if (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
!t_onqueue(&(cli_proc(cptr))))
{
Debug((DEBUG_LIST, "Adding client process timer for %C", cptr));
cli_freeflag(cptr) |= FREEFLAG_TIMER;
timer_add(&(cli_proc(cptr)), client_timer_callback, cli_connect(cptr),
TT_RELATIVE, 2);
}
}
return 1;
}
/** Close the physical connection. Side effects: MyConnect(cptr)
* becomes false and cptr->from becomes NULL.
* @param cptr Client to disconnect.
*/
void close_connection(struct Client *cptr)
{
struct ConfItem* aconf;
if (IsServer(cptr)) {
ServerStats->is_sv++;
ServerStats->is_sbs += cli_sendB(cptr);
ServerStats->is_sbr += cli_receiveB(cptr);
ServerStats->is_sti += CurrentTime - cli_firsttime(cptr);
/*
* If the connection has been up for a long amount of time, schedule
* a 'quick' reconnect, else reset the next-connect cycle.
*/
if ((aconf = find_conf_exact(cli_name(cptr), cptr, CONF_SERVER))) {
/*
* Reschedule a faster reconnect, if this was a automatically
* connected configuration entry. (Note that if we have had
* a rehash in between, the status has been changed to
* CONF_ILLEGAL). But only do this if it was a "good" link.
*/
aconf->hold = CurrentTime;
aconf->hold += ((aconf->hold - cli_since(cptr) >
feature_int(FEAT_HANGONGOODLINK)) ?
feature_int(FEAT_HANGONRETRYDELAY) : ConfConFreq(aconf));
/* if (nextconnect > aconf->hold) */
/* nextconnect = aconf->hold; */
}
}
else if (IsUser(cptr)) {
ServerStats->is_cl++;
ServerStats->is_cbs += cli_sendB(cptr);
ServerStats->is_cbr += cli_receiveB(cptr);
ServerStats->is_cti += CurrentTime - cli_firsttime(cptr);
}
else
ServerStats->is_ni++;
if (-1 < cli_fd(cptr)) {
flush_connections(cptr);
LocalClientArray[cli_fd(cptr)] = 0;
close(cli_fd(cptr));
socket_del(&(cli_socket(cptr))); /* queue a socket delete */
cli_fd(cptr) = -1;
}
SetFlag(cptr, FLAG_DEADSOCKET);
MsgQClear(&(cli_sendQ(cptr)));
client_drop_sendq(cli_connect(cptr));
DBufClear(&(cli_recvQ(cptr)));
memset(cli_passwd(cptr), 0, sizeof(cli_passwd(cptr)));
set_snomask(cptr, 0, SNO_SET);
det_confs_butmask(cptr, 0);
if (cli_listener(cptr)) {
release_listener(cli_listener(cptr));
cli_listener(cptr) = 0;
}
for ( ; HighestFd > 0; --HighestFd) {
if (LocalClientArray[HighestFd])
break;
}
}