/*! \brief TOPIC 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] = channel name
* - parv[2] = topic text
*/
static int
ms_topic(struct Client *source_p, int parc, char *parv[])
{
struct Channel *chptr = NULL;
char topic_info[USERHOST_REPLYLEN];
if (EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
return 0;
}
if ((chptr = hash_find_channel(parv[1])) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
return 0;
}
if (!IsClient(source_p))
strlcpy(topic_info, source_p->name, sizeof(topic_info));
else
snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
source_p->username, source_p->host);
channel_set_topic(chptr, parv[2], topic_info, CurrentTime, 0);
sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
source_p->id, chptr->name,
chptr->topic);
if (!IsClient(source_p))
sendto_channel_local(0, chptr, ":%s TOPIC %s :%s",
(IsHidden(source_p) || ConfigServerHide.hide_servers) ? me.name : source_p->name,
chptr->name, chptr->topic);
else
sendto_channel_local(0, chptr, ":%s!%s@%s TOPIC %s :%s",
source_p->name,
source_p->username,
source_p->host,
chptr->name, chptr->topic);
return 0;
}
/*! \brief TOPIC 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] = channel name
* - parv[2] = topic text, if setting topic
*/
static int
m_topic(struct Client *source_p, int parc, char *parv[])
{
struct Channel *chptr = NULL;
if (EmptyString(parv[1]))
{
sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "TOPIC");
return 0;
}
if (!IsFloodDone(source_p))
flood_endgrace(source_p);
if ((chptr = hash_find_channel(parv[1])) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, parv[1]);
return 0;
}
/* setting topic */
if (parc > 2)
{
const struct Membership *member = NULL;
if ((member = find_channel_link(source_p, chptr)) == NULL)
{
sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, chptr->name);
return 0;
}
if (!(chptr->mode.mode & MODE_TOPICLIMIT) ||
has_member_flags(member, CHFL_CHANOP|CHFL_HALFOP))
{
char topic_info[USERHOST_REPLYLEN];
snprintf(topic_info, sizeof(topic_info), "%s!%s@%s", source_p->name,
source_p->username, source_p->host);
channel_set_topic(chptr, parv[2], topic_info, CurrentTime, 1);
sendto_server(source_p, 0, 0, ":%s TOPIC %s :%s",
source_p->id, chptr->name,
chptr->topic);
sendto_channel_local(0, chptr, ":%s!%s@%s TOPIC %s :%s",
source_p->name,
source_p->username,
source_p->host,
chptr->name, chptr->topic);
}
else
sendto_one_numeric(source_p, &me, ERR_CHANOPRIVSNEEDED, chptr->name);
}
else /* only asking for topic */
{
if (!SecretChannel(chptr) || IsMember(source_p, chptr))
{
if (chptr->topic[0] == '\0')
sendto_one_numeric(source_p, &me, RPL_NOTOPIC, chptr->name);
else
{
sendto_one_numeric(source_p, &me, RPL_TOPIC,
chptr->name, chptr->topic);
sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, chptr->name,
chptr->topic_info,
chptr->topic_time);
}
}
else
sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, chptr->name);
}
return 0;
}
/*! \brief TBURST 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] = channel timestamp
* - parv[2] = channel name
* - parv[3] = topic timestamp
* - parv[4] = topic setter
* - parv[5] = topic
*/
static int
ms_tburst(struct Client *source_p, int parc, char *parv[])
{
struct Channel *chptr = NULL;
int accept_remote = 0;
time_t remote_channel_ts = atol(parv[1]);
time_t remote_topic_ts = atol(parv[3]);
const char *topic = parv[5];
const char *setby = parv[4];
/*
* Do NOT test parv[5] for an empty string and return if true!
* parv[5] CAN be an empty string, i.e. if the other side wants
* to unset our topic. Don't forget: an empty topic is also a
* valid topic.
*/
if ((chptr = hash_find_channel(parv[2])) == NULL)
return 0;
/*
* The logic for accepting and rejecting channel topics was
* always a bit hairy, so now we got exactly 3 cases where
* we would accept a topic
*
* Case 1:
* A services client/server wants to set a topic
* Case 2:
* The TS of the remote channel is older than ours
* Case 3:
* The TS of the remote channel is equal to ours AND
* the TS of the remote topic is newer than ours
*/
if (HasFlag(source_p, FLAGS_SERVICE))
accept_remote = 1;
else if (remote_channel_ts < chptr->creationtime)
accept_remote = 1;
else if (remote_channel_ts == chptr->creationtime)
if (remote_topic_ts > chptr->topic_time)
accept_remote = 1;
if (accept_remote)
{
int topic_differs = strncmp(chptr->topic, topic, sizeof(chptr->topic) - 1);
int hidden_server = (ConfigServerHide.hide_servers || IsHidden(source_p));
channel_set_topic(chptr, topic, setby, remote_topic_ts, 0);
sendto_server(source_p, CAPAB_TBURST, 0, ":%s TBURST %s %s %s %s :%s",
source_p->id, parv[1], parv[2], parv[3], setby, topic);
if (topic_differs)
{
if (!IsClient(source_p))
sendto_channel_local(0, chptr, ":%s TOPIC %s :%s",
hidden_server ? me.name : source_p->name,
chptr->name, chptr->topic);
else
sendto_channel_local(0, chptr, ":%s!%s@%s TOPIC %s :%s",
source_p->name, source_p->username, source_p->host,
chptr->name, chptr->topic);
}
}
return 0;
}