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construct/modules/m_help.cc
2016-08-20 19:30:33 -07:00

130 lines
3.8 KiB
C++

/*
* ircd-ratbox: A slightly useful ircd.
* m_help.c: Provides help information to a user/operator.
*
* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
using namespace ircd;
static const char help_desc[] =
"Provides the help facility for commands, modes, and server concepts";
static void m_help(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void mo_help(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void mo_uhelp(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void dohelp(struct Client *, int, const char *);
struct Message help_msgtab = {
"HELP", 0, 0, 0, 0,
{mg_unreg, {m_help, 0}, mg_ignore, mg_ignore, mg_ignore, {mo_help, 0}}
};
struct Message uhelp_msgtab = {
"UHELP", 0, 0, 0, 0,
{mg_unreg, {m_help, 0}, mg_ignore, mg_ignore, mg_ignore, {mo_uhelp, 0}}
};
mapi_clist_av1 help_clist[] = { &help_msgtab, &uhelp_msgtab, NULL };
DECLARE_MODULE_AV2(help, NULL, NULL, help_clist, NULL, NULL, NULL, NULL, help_desc);
/*
* m_help - HELP message handler
*/
static void
m_help(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
using namespace cache::help;
dohelp(source_p, USER, parc > 1 ? parv[1] : NULL);
}
/*
* mo_help - HELP message handler
*/
static void
mo_help(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
using namespace cache::help;
dohelp(source_p, OPER, parc > 1 ? parv[1] : NULL);
}
/*
* mo_uhelp - HELP message handler
* This is used so that opers can view the user help file without deopering
*/
static void
mo_uhelp(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
using namespace cache::help;
dohelp(source_p, USER, parc > 1 ? parv[1] : NULL);
}
static void
dohelp(Client *const source_p,
int type,
const char *topic)
try
{
namespace help = cache::help;
static const char *const ntopic("index");
if (EmptyString(topic))
topic = ntopic;
std::shared_ptr<cache::file> file
{
type & help::OPER? help::oper.at(topic):
type & help::USER? help::user.at(topic):
nullptr
};
if (!file || !(flags(*file) & type))
throw std::out_of_range(ntopic);
auto it(begin(contents(*file)));
if (it != end(contents(*file)))
sendto_one(source_p, form_str(RPL_HELPSTART),
me.name,
source_p->name,
topic,
it->c_str());
for (++it; it != end(contents(*file)); ++it)
sendto_one(source_p, form_str(RPL_HELPTXT),
me.name,
source_p->name,
topic,
it->c_str());
sendto_one(source_p, form_str(RPL_ENDOFHELP),
me.name,
source_p->name,
topic);
}
catch(const std::out_of_range &e)
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name,
source_p->name,
topic?: e.what());
}