/*!
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
*
* - parv[0] = command
* - parv[1] = nickname
* - parv[2] = timestamp
*/
static void
change_remote_nick(struct Client *source_p, char *parv[])
{
int samenick = !irccmp(source_p->name, parv[1]);
assert(!EmptyString(parv[1]));
assert(IsClient(source_p));
assert(source_p->name[0]);
/* Client changing their nick */
if (!samenick)
{
DelUMode(source_p, UMODE_REGISTERED);
watch_check_hash(source_p, RPL_LOGOFF);
source_p->tsinfo = atol(parv[2]);
assert(source_p->tsinfo > 0);
}
sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s",
source_p->name, source_p->username,
source_p->host, parv[1]);
whowas_add_history(source_p, 1);
sendto_server(source_p, 0, 0, ":%s NICK %s :%lu",
source_p->id, parv[1], (unsigned long)source_p->tsinfo);
/* Set the new nick name */
hash_del_client(source_p);
strlcpy(source_p->name, parv[1], sizeof(source_p->name));
hash_add_client(source_p);
if (!samenick)
watch_check_hash(source_p, RPL_LOGON);
}
/*
* nick_from_server()
*/
static void
nick_from_server(struct Client *client_p, struct Client *source_p, int parc,
char *parv[], time_t newts, const char *svsid, char *nick, char *ngecos)
{
int samenick = 0;
if (IsServer(source_p))
{
/* A server introducing a new client, change source */
source_p = make_client(client_p);
dlinkAdd(source_p, &source_p->node, &global_client_list);
if (parc > 2)
source_p->hopcount = atoi(parv[2]);
if (newts)
source_p->tsinfo = newts;
else
{
newts = source_p->tsinfo = CurrentTime;
ts_warn("Remote nick %s (%s) introduced without a TS", nick, parv[0]);
}
strlcpy(source_p->svid, svsid, sizeof(source_p->svid));
strlcpy(source_p->info, ngecos, sizeof(source_p->info));
/* copy the nick in place */
strlcpy(source_p->name, nick, sizeof(source_p->name));
hash_add_client(source_p);
if (parc > 8)
{
const char *m;
/* parse usermodes */
for (m = &parv[4][1]; *m; ++m)
{
unsigned int flag = user_modes[(unsigned char)*m];
if ((flag & UMODE_INVISIBLE) && !HasUMode(source_p, UMODE_INVISIBLE))
++Count.invisi;
if ((flag & UMODE_OPER) && !HasUMode(source_p, UMODE_OPER))
++Count.oper;
source_p->umodes |= flag & SEND_UMODES;
}
register_remote_user(source_p, parv[5], parv[6],
parv[7], ngecos);
return;
}
}
else if (source_p->name[0])
{
samenick = !irccmp(source_p->name, nick);
/* Client changing their nick */
if (!samenick)
{
DelUMode(source_p, UMODE_REGISTERED);
watch_check_hash(source_p, RPL_LOGOFF);
source_p->tsinfo = newts ? newts : CurrentTime;
}
sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s",
source_p->name,source_p->username,
source_p->host, nick);
add_history(source_p, 1);
sendto_server(client_p, CAP_TS6, NOCAPS,
":%s NICK %s :%lu",
ID(source_p), nick, (unsigned long)source_p->tsinfo);
sendto_server(client_p, NOCAPS, CAP_TS6,
":%s NICK %s :%lu",
source_p->name, nick, (unsigned long)source_p->tsinfo);
}
/* set the new nick name */
if (source_p->name[0])
hash_del_client(source_p);
strlcpy(source_p->name, nick, sizeof(source_p->name));
hash_add_client(source_p);
if (!samenick)
watch_check_hash(source_p, RPL_LOGON);
}
/* change_local_nick()
*
* inputs - pointer to server
* - pointer to client
* - nick
* output -
* side effects - changes nick of a LOCAL user
*/
static void
change_local_nick(struct Client *source_p, const char *nick)
{
assert(source_p->name[0] && !EmptyString(nick));
assert(MyConnect(source_p));
/*
* Client just changing his/her nick. If he/she is
* on a channel, send note of change to all clients
* on that channel. Propagate notice to other servers.
*/
if ((source_p->localClient->last_nick_change +
ConfigFileEntry.max_nick_time) < CurrentTime)
source_p->localClient->number_of_nick_changes = 0;
source_p->localClient->last_nick_change = CurrentTime;
source_p->localClient->number_of_nick_changes++;
if ((ConfigFileEntry.anti_nick_flood &&
(source_p->localClient->number_of_nick_changes
<= ConfigFileEntry.max_nick_changes)) ||
!ConfigFileEntry.anti_nick_flood ||
(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.no_oper_flood))
{
int samenick = !irccmp(source_p->name, nick);
if (!samenick)
{
source_p->tsinfo = CurrentTime;
clear_ban_cache_client(source_p);
watch_check_hash(source_p, RPL_LOGOFF);
if (HasUMode(source_p, UMODE_REGISTERED))
{
unsigned int oldmodes = source_p->umodes;
char modebuf[IRCD_BUFSIZE] = { '\0' };
DelUMode(source_p, UMODE_REGISTERED);
send_umode(source_p, source_p, oldmodes, 0xffffffff, modebuf);
}
}
sendto_realops_flags(UMODE_NCHANGE, L_ALL, SEND_NOTICE,
"Nick change: From %s to %s [%s@%s]",
source_p->name, nick, source_p->username, source_p->host);
sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s",
source_p->name, source_p->username,
source_p->host, nick);
add_history(source_p, 1);
sendto_server(source_p, CAP_TS6, NOCAPS,
":%s NICK %s :%lu",
ID(source_p), nick, (unsigned long)source_p->tsinfo);
sendto_server(source_p, NOCAPS, CAP_TS6,
":%s NICK %s :%lu",
source_p->name, nick, (unsigned long)source_p->tsinfo);
hash_del_client(source_p);
strlcpy(source_p->name, nick, sizeof(source_p->name));
hash_add_client(source_p);
if (!samenick)
watch_check_hash(source_p, RPL_LOGON);
/* fd_desc is long enough */
fd_note(&source_p->localClient->fd, "Nick: %s", nick);
}
else
sendto_one(source_p, form_str(ERR_NICKTOOFAST), me.name,
source_p->name, source_p->name, nick,
ConfigFileEntry.max_nick_time);
}
/* change_local_nick()
*
* inputs - pointer to server
* - pointer to client
* - nick
* output -
* side effects - changes nick of a LOCAL user
*/
static void
change_local_nick(struct Client *source_p, const char *nick)
{
int samenick = 0;
assert(source_p->name[0] && !EmptyString(nick));
assert(MyClient(source_p));
/*
* Client just changing his/her nick. If he/she is
* on a channel, send note of change to all clients
* on that channel. Propagate notice to other servers.
*/
if ((source_p->connection->nick.last_attempt +
ConfigGeneral.max_nick_time) < CurrentTime)
source_p->connection->nick.count = 0;
if (ConfigGeneral.anti_nick_flood &&
!HasUMode(source_p, UMODE_OPER) &&
source_p->connection->nick.count >
ConfigGeneral.max_nick_changes)
{
sendto_one_numeric(source_p, &me, ERR_NICKTOOFAST, nick,
ConfigGeneral.max_nick_time);
return;
}
source_p->connection->nick.last_attempt = CurrentTime;
source_p->connection->nick.count++;
samenick = !irccmp(source_p->name, nick);
if (!samenick)
{
source_p->tsinfo = CurrentTime;
clear_ban_cache_client(source_p);
watch_check_hash(source_p, RPL_LOGOFF);
if (HasUMode(source_p, UMODE_REGISTERED))
{
unsigned int oldmodes = source_p->umodes;
char modebuf[IRCD_BUFSIZE] = "";
DelUMode(source_p, UMODE_REGISTERED);
send_umode(source_p, source_p, oldmodes, modebuf);
}
}
sendto_realops_flags(UMODE_NCHANGE, L_ALL, SEND_NOTICE,
"Nick change: From %s to %s [%s@%s]",
source_p->name, nick, source_p->username, source_p->host);
sendto_common_channels_local(source_p, 1, 0, ":%s!%s@%s NICK :%s",
source_p->name, source_p->username,
source_p->host, nick);
whowas_add_history(source_p, 1);
sendto_server(source_p, 0, 0, ":%s NICK %s :%lu",
source_p->id, nick, (unsigned long)source_p->tsinfo);
hash_del_client(source_p);
strlcpy(source_p->name, nick, sizeof(source_p->name));
hash_add_client(source_p);
if (!samenick)
watch_check_hash(source_p, RPL_LOGON);
/* fd_desc is long enough */
fd_note(&source_p->connection->fd, "Nick: %s", source_p->name);
}
/*! \brief SVSNICK command handler
*
* \param source_p Pointer to allocated Client struct from which the message
* originally comes from. This can be a local or remote client.
* \param parc Integer holding the number of supplied arguments.
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
* pointers.
* \note Valid arguments for this command are:
* - parv[0] = command
* - parv[1] = old nickname
* - parv[2] = new nickname
* - parv[3] = timestamp
*/
static int
ms_svsnick(struct Client *source_p, int parc, char *parv[])
{
struct Client *target_p = NULL, *exists_p = NULL;
if (!HasFlag(source_p, FLAGS_SERVICE) || !valid_nickname(parv[2], 1))
return 0;
if ((target_p = find_person(source_p, parv[1])) == NULL)
return 0;
if (!MyConnect(target_p))
{
if (target_p->from == source_p->from)
{
sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
"Received wrong-direction SVSNICK "
"for %s (behind %s) from %s",
target_p->name, source_p->from->name,
get_client_name(source_p, HIDE_IP));
return 0;
}
sendto_one(target_p, ":%s SVSNICK %s %s %s", source_p->id,
target_p->id, parv[2], parv[3]);
return 0;
}
if ((exists_p = hash_find_client(parv[2])))
{
if (target_p == exists_p)
{
if (!strcmp(target_p->name, parv[2]))
return 0;
}
else if (IsUnknown(exists_p))
exit_client(exists_p, "SVSNICK Override");
else
{
exit_client(target_p, "SVSNICK Collide");
return 0;
}
}
target_p->tsinfo = strtoimax(parv[3], NULL, 10);
clear_ban_cache_client(target_p);
watch_check_hash(target_p, RPL_LOGOFF);
if (HasUMode(target_p, UMODE_REGISTERED))
{
const unsigned int oldmodes = target_p->umodes;
char modebuf[IRCD_BUFSIZE] = "";
DelUMode(target_p, UMODE_REGISTERED);
send_umode(target_p, target_p, oldmodes, modebuf);
}
sendto_common_channels_local(target_p, 1, 0, 0, ":%s!%s@%s NICK :%s",
target_p->name, target_p->username,
target_p->host, parv[2]);
whowas_add_history(target_p, 1);
sendto_server(NULL, 0, 0, ":%s NICK %s :%ju",
target_p->id, parv[2], target_p->tsinfo);
hash_del_client(target_p);
strlcpy(target_p->name, parv[2], sizeof(target_p->name));
hash_add_client(target_p);
watch_check_hash(target_p, RPL_LOGON);
fd_note(&target_p->connection->fd, "Nick: %s", target_p->name);
return 0;
}
