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/*
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
* m_help.c: Provides help information to a user/operator.
*
* Copyright (C) 2002 by the past and present ircd coders, and others.
*
* 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
*
* $Id$
*/
#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "conf.h"
#include "parse.h"
#include "modules.h"
#include "irc_string.h"
#define HELPLEN 400
static void dohelp(struct Client *, const char *, char *);
static void sendhelpfile(struct Client *, const char *, const char *);
/*
* m_help - HELP message handler
* parv[0] = sender prefix
*/
static void
m_help(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
static time_t last_used = 0;
/* HELP is always local */
if ((last_used + ConfigFileEntry.pace_wait_simple) > CurrentTime)
{
/* safe enough to give this on a local connect only */
sendto_one(source_p,form_str(RPL_LOAD2HI),
me.name, source_p->name);
return;
}
last_used = CurrentTime;
dohelp(source_p, UHPATH, parv[1]);
}
/*
* mo_help - HELP message handler
* parv[0] = sender prefix
*/
static void
mo_help(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
dohelp(source_p, HPATH, parv[1]);
}
/*
* mo_uhelp - HELP message handler
* This is used so that opers can view the user help file without deopering
* parv[0] = sender prefix
*/
static void
mo_uhelp(struct Client *client_p, struct Client *source_p,
int parc, char *parv[])
{
dohelp(source_p, UHPATH, parv[1]);
}
static void
dohelp(struct Client *source_p, const char *hpath, char *topic)
{
char h_index[] = "index";
char path[HYB_PATH_MAX + 1];
struct stat sb;
unsigned int i;
if (EmptyString(topic))
topic = h_index;
else
for (i = 0; topic[i] != '\0'; ++i)
topic[i] = ToLower(topic[i]);
if (strpbrk(topic, "/\\"))
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
if (strlen(hpath) + strlen(topic) + 1 > HYB_PATH_MAX)
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
snprintf(path, sizeof(path), "%s/%s", hpath, topic);
if (stat(path, &sb) < 0)
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
if (!S_ISREG(sb.st_mode))
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
sendhelpfile(source_p, path, topic);
}
static void
sendhelpfile(struct Client *source_p, const char *path, const char *topic)
{
FILE *file;
char line[HELPLEN];
if ((file = fopen(path, "r")) == NULL)
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
if (fgets(line, sizeof(line), file) == NULL)
{
sendto_one(source_p, form_str(ERR_HELPNOTFOUND),
me.name, source_p->name, topic);
return;
}
line[strlen(line) - 1] = '\0';
sendto_one(source_p, form_str(RPL_HELPSTART),
me.name, source_p->name, topic, line);
while (fgets(line, sizeof(line), file))
{
line[strlen(line) - 1] = '\0';
sendto_one(source_p, form_str(RPL_HELPTXT),
me.name, source_p->name, topic, line);
}
fclose(file);
sendto_one(source_p, form_str(RPL_ENDOFHELP),
me.name, source_p->name, topic);
}
static struct Message help_msgtab = {
"HELP", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
{m_unregistered, m_help, m_ignore, m_ignore, mo_help, m_ignore}
};
static struct Message uhelp_msgtab = {
"UHELP", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
{m_unregistered, m_help, m_ignore, m_ignore, mo_uhelp, m_ignore}
};
static void
module_init(void)
{
mod_add_cmd(&help_msgtab);
mod_add_cmd(&uhelp_msgtab);
}
static void
module_exit(void)
{
mod_del_cmd(&help_msgtab);
mod_del_cmd(&uhelp_msgtab);
}
struct module module_entry = {
.node = { NULL, NULL, NULL },
.name = NULL,
.version = "$Revision$",
.handle = NULL,
.modinit = module_init,
.modexit = module_exit,
.flags = 0
};
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