static int try_local_join_chan(u_sourceinfo *si, char *chan, char *key)
{
u_chan *c, *fwd;
u_chanuser *cu;
bool created;
int num;
char *modes;
/* verify entry */
if (!(c = u_chan_get_or_create(chan)))
return u_user_num(si->u, ERR_NOSUCHCHANNEL, chan);
created = c->ts == NOW.tv_sec; /* is this ok? */
if ((cu = u_chan_user_find(c, si->u)) != NULL)
return 0;
if ((num = u_entry_blocked(c, si->u, key)) != 0) {
fwd = u_find_forward(c, si->u, key);
if (fwd == NULL || u_chan_user_find(fwd, si->u))
return u_user_num(si->u, num, c);
c = fwd;
}
/* perform join */
cu = u_chan_user_add(c, si->u);
u_del_invite(c, si->u);
if (created)
cu->flags |= CU_PFX_OP;
/* send messages */
u_sendto_chan(c, NULL, ST_USERS, ":%H JOIN %C", si->u, c);
modes = u_chan_modes(c, 1);
if (created) {
u_log(LG_VERBOSE, "Channel %C %s created by %U", c, modes, si->u);
u_conn_f(si->link, ":%S MODE %C %s", &me, c, modes);
}
if (!(c->flags & CHAN_LOCAL)) {
if (c->members->size == 1) {
u_sendto_servers(NULL, ":%S SJOIN %u %C %s :%s%U",
&me, c->ts, c, modes,
(cu->flags & CU_PFX_OP) ? "@" : "", si->u);
} else {
u_sendto_servers(NULL, ":%U JOIN %u %C +",
si->u, c->ts, c);
}
}
/* Credit them */
u_ratelimit_who_credit(si->u);
u_chan_send_topic(c, si->u);
u_chan_send_names(c, si->u);
return 0;
}
/* this function is carefully written to handle both local and remote users
and servers. */
static int c_a_mode(u_sourceinfo *si, u_msg *msg)
{
char *target = msg->argv[0];
int parc;
char **parv;
u_chan *c;
u_modes m;
struct cmode_stacker_private stack;
if (!strchr(CHANTYPES, *target)) {
u_user *tu = u_user_by_ref(si->source, target);
if (tu == NULL) {
/* legacy chary behavior */
u_user_num(si->u, ERR_NOSUCHCHANNEL, target);
} else if (si->u != tu) {
u_user_num(si->u, ERR_USERSDONTMATCH);
} else {
return mode_user(si, msg->argv[1]);
}
return 0;
}
if (!(c = u_chan_get(target)))
return u_user_num(si->u, ERR_NOSUCHCHANNEL, target);
m.access = NULL;
m.flags = 0;
if (SRC_IS_LOCAL_USER(si)) {
u_chanuser *cu = u_chan_user_find(c, si->u);
if (msg->argc == 1) {
return u_user_num(si->u, RPL_CHANNELMODEIS, c,
u_chan_modes(c, !!cu));
}
if (cu && (cu->flags & CU_PFX_OP))
m.access = cu;
} else { /* source is local server or remote user/server */
m.flags |= MODE_FORCE_ALL;
if (msg->argc == 1)
return 0;
}
parc = msg->argc - 1;
parv = msg->argv + 1;
if (parc > 5)
parc = 5;
m.ctx = &cmodes;
m.stacker = &cmode_stacker;
m.setter = si;
m.target = c;
m.stack = &stack;
u_mode_process(&m, parc, parv);
if (SRC_IS_LOCAL_USER(si)) {
if (m.errors & MODE_ERR_NO_ACCESS)
u_src_num(si, ERR_CHANOPRIVSNEEDED, c);
if (m.errors & MODE_ERR_NOT_OPER)
u_src_num(si, ERR_NOPRIVILEGES);
}
return 0;
}
