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solanum-vs-hackint-and-char.../modules/m_whois.c
Elizabeth Myers 3c7d6fcce7 Message handlers should return void. 
Also fix up some return values and stuff to use bool (or void if
nothing). I just did it whilst I was here.

According to jilles, the return value used to signify whether or not the
client had exited. This was error-prone and was fixed a long, long time
ago, but the return value was left int for historical reasons.

Since the return type is not used (and has no clear use case anyway),
it's safe to just get rid of it.
2016-03-09 01:37:03 -06:00

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/*
* ircd-ratbox: A slightly useful ircd.
* m_whois.c: Shows who a user is.
*
* 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
*/
#include "stdinc.h"
#include "common.h"
#include "client.h"
#include "hash.h"
#include "channel.h"
#include "hash.h"
#include "ircd.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_serv.h"
#include "send.h"
#include "match.h"
#include "s_conf.h"
#include "logger.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "hook.h"
#include "s_newconf.h"
#include "ipv4_from_ipv6.h"
#include "ratelimit.h"
#include "s_assert.h"
static const char whois_desc[] =
"Provides the WHOIS command to display information about a user";
static void do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]);
static void single_whois(struct Client *source_p, struct Client *target_p, int operspy);
static void m_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static void ms_whois(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
struct Message whois_msgtab = {
"WHOIS", 0, 0, 0, 0,
{mg_unreg, {m_whois, 2}, {ms_whois, 2}, mg_ignore, mg_ignore, {m_whois, 2}}
};
int doing_whois_hook;
int doing_whois_global_hook;
int doing_whois_channel_visibility_hook;
mapi_clist_av1 whois_clist[] = { &whois_msgtab, NULL };
mapi_hlist_av1 whois_hlist[] = {
{ "doing_whois", &doing_whois_hook },
{ "doing_whois_global", &doing_whois_global_hook },
{ "doing_whois_channel_visibility", &doing_whois_channel_visibility_hook },
{ NULL, NULL }
};
DECLARE_MODULE_AV2(whois, NULL, NULL, whois_clist, whois_hlist, NULL, NULL, NULL, whois_desc);
/*
* m_whois
* parv[1] = nickname masklist
*/
static void
m_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
static time_t last_used = 0;
if(parc > 2)
{
if(EmptyString(parv[2]))
{
sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
me.name, source_p->name);
return;
}
if(!IsOper(source_p))
{
/* seeing as this is going across servers, we should limit it */
if((last_used + ConfigFileEntry.pace_wait_simple) > rb_current_time() || !ratelimit_client(source_p, 2))
{
sendto_one(source_p, form_str(RPL_LOAD2HI),
me.name, source_p->name, "WHOIS");
sendto_one_numeric(source_p, RPL_ENDOFWHOIS,
form_str(RPL_ENDOFWHOIS), parv[2]);
return;
}
else
last_used = rb_current_time();
}
if(hunt_server(client_p, source_p, ":%s WHOIS %s :%s", 1, parc, parv) !=
HUNTED_ISME)
return;
parv[1] = parv[2];
}
do_whois(client_p, source_p, parc, parv);
}
/*
* ms_whois
* parv[1] = server to reply
* parv[2] = nickname to whois
*/
static void
ms_whois(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Client *target_p;
/* note: early versions of ratbox allowed users to issue a remote
* whois with a blank parv[2], so we cannot treat it as a protocol
* violation. --anfl
*/
if(parc < 3 || EmptyString(parv[2]))
{
sendto_one(source_p, form_str(ERR_NONICKNAMEGIVEN),
me.name, source_p->name);
return;
}
/* check if parv[1] exists */
if((target_p = find_client(parv[1])) == NULL)
{
sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
form_str(ERR_NOSUCHSERVER),
IsDigit(parv[1][0]) ? "*" : parv[1]);
return;
}
/* if parv[1] isnt my client, or me, someone else is supposed
* to be handling the request.. so send it to them
*/
if(!MyClient(target_p) && !IsMe(target_p))
{
sendto_one(target_p, ":%s WHOIS %s :%s",
get_id(source_p, target_p),
get_id(target_p, target_p), parv[2]);
return;
}
/* ok, the target is either us, or a client on our server, so perform the whois
* but first, parv[1] == server to perform the whois on, parv[2] == person
* to whois, so make parv[1] = parv[2] so do_whois is ok -- fl_
*/
parv[1] = parv[2];
do_whois(client_p, source_p, parc, parv);
}
/* do_whois
*
* inputs - pointer to
* output -
* side effects -
*/
static void
do_whois(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
struct Client *target_p;
char *nick;
char *p = NULL;
int operspy = 0;
nick = LOCAL_COPY(parv[1]);
if((p = strchr(nick, ',')))
*p = '\0';
if(IsOperSpy(source_p) && *nick == '!')
{
operspy = 1;
nick++;
}
target_p = find_named_person(nick);
if(target_p != NULL)
{
if(operspy)
{
char buffer[BUFSIZE];
snprintf(buffer, sizeof(buffer), "%s!%s@%s %s",
target_p->name, target_p->username,
target_p->host, target_p->servptr->name);
report_operspy(source_p, "WHOIS", buffer);
}
single_whois(source_p, target_p, operspy);
}
else
sendto_one_numeric(source_p, ERR_NOSUCHNICK,
form_str(ERR_NOSUCHNICK),
nick);
sendto_one_numeric(source_p, RPL_ENDOFWHOIS,
form_str(RPL_ENDOFWHOIS), parv[1]);
}
/*
* single_whois()
*
* Inputs - source_p client to report to
* - target_p client to report on
* Output - if found return 1
* Side Effects - do a single whois on given client
* writing results to source_p
*/
static void
single_whois(struct Client *source_p, struct Client *target_p, int operspy)
{
char buf[BUFSIZE];
rb_dlink_node *ptr;
struct membership *msptr;
struct Channel *chptr;
int cur_len = 0;
int mlen;
char *t;
int tlen;
hook_data_client hdata;
int extra_space = 0;
#ifdef RB_IPV6
struct sockaddr_in ip4;
#endif
if(target_p->user == NULL)
{
s_assert(0);
return;
}
sendto_one_numeric(source_p, RPL_WHOISUSER, form_str(RPL_WHOISUSER),
target_p->name, target_p->username,
target_p->host, target_p->info);
cur_len = mlen = sprintf(buf, form_str(RPL_WHOISCHANNELS),
get_id(&me, source_p), get_id(source_p, source_p),
target_p->name);
/* Make sure it won't overflow when sending it to the client
* in full names; note that serverhiding may require more space
* for a different server name (not done here) -- jilles
*/
if (!MyConnect(source_p))
{
extra_space = strlen(source_p->name) - 9;
if (extra_space < 0)
extra_space = 0;
extra_space += strlen(me.name) - 2; /* make sure >= 0 */
cur_len += extra_space;
}
t = buf + mlen;
hdata.client = source_p;
hdata.target = target_p;
if (!IsService(target_p))
{
RB_DLINK_FOREACH(ptr, target_p->user->channel.head)
{
msptr = ptr->data;
chptr = msptr->chptr;
hdata.chptr = chptr;
hdata.approved = ShowChannel(source_p, chptr);
call_hook(doing_whois_channel_visibility_hook, &hdata);
if(hdata.approved || operspy)
{
if((cur_len + strlen(chptr->chname) + 3) > (BUFSIZE - 5))
{
sendto_one(source_p, "%s", buf);
cur_len = mlen + extra_space;
t = buf + mlen;
}
tlen = sprintf(t, "%s%s%s ",
hdata.approved ? "" : "!",
find_channel_status(msptr, 1),
chptr->chname);
t += tlen;
cur_len += tlen;
}
}
}
if(cur_len > mlen + extra_space)
sendto_one(source_p, "%s", buf);
sendto_one_numeric(source_p, RPL_WHOISSERVER, form_str(RPL_WHOISSERVER),
target_p->name, target_p->servptr->name,
target_p->servptr->info);
if(target_p->user->away)
sendto_one_numeric(source_p, RPL_AWAY, form_str(RPL_AWAY),
target_p->name, target_p->user->away);
if(IsOper(target_p) && (!ConfigFileEntry.hide_opers_in_whois || IsOper(source_p)))
{
sendto_one_numeric(source_p, RPL_WHOISOPERATOR, form_str(RPL_WHOISOPERATOR),
target_p->name,
IsService(target_p) ? ConfigFileEntry.servicestring :
(IsAdmin(target_p) ? GlobalSetOptions.adminstring :
GlobalSetOptions.operstring));
}
if(MyClient(target_p) && !EmptyString(target_p->localClient->opername) && IsOper(source_p))
{
char buf[512];
snprintf(buf, sizeof(buf), "is opered as %s, privset %s",
target_p->localClient->opername, target_p->localClient->privset->name);
sendto_one_numeric(source_p, RPL_WHOISSPECIAL, form_str(RPL_WHOISSPECIAL),
target_p->name, buf);
}
if(IsSSLClient(target_p))
{
char cbuf[256] = "is using a secure connection";
if (MyClient(target_p) && target_p->localClient->cipher_string != NULL)
rb_snprintf_append(cbuf, sizeof(cbuf), " [%s]", target_p->localClient->cipher_string);
sendto_one_numeric(source_p, RPL_WHOISSECURE, form_str(RPL_WHOISSECURE),
target_p->name, cbuf);
if((source_p == target_p || IsOper(source_p)) &&
target_p->certfp != NULL)
sendto_one_numeric(source_p, RPL_WHOISCERTFP,
form_str(RPL_WHOISCERTFP),
target_p->name, target_p->certfp);
}
if(MyClient(target_p))
{
if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p))
{
/* trick here: show a nonoper their own IP if
* dynamic spoofed but not if auth{} spoofed
* -- jilles */
ClearDynSpoof(target_p);
sendto_one_numeric(source_p, RPL_WHOISHOST,
form_str(RPL_WHOISHOST),
target_p->name, target_p->orighost,
show_ip(source_p, target_p) ? target_p->sockhost : "255.255.255.255");
SetDynSpoof(target_p);
}
else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p))
sendto_one_numeric(source_p, RPL_WHOISACTUALLY,
form_str(RPL_WHOISACTUALLY),
target_p->name, target_p->sockhost);
#ifdef RB_IPV6
if (target_p->localClient->ip.ss_family == AF_INET6 &&
(show_ip(source_p, target_p) ||
(source_p == target_p && !IsIPSpoof(target_p))) &&
ipv4_from_ipv6((struct sockaddr_in6 *)&target_p->localClient->ip, &ip4))
{
rb_inet_ntop_sock((struct sockaddr *)&ip4,
buf, sizeof buf);
sendto_one_numeric(source_p, RPL_WHOISTEXT,
"%s :Underlying IPv4 is %s",
target_p->name, buf);
}
#endif /* RB_IPV6 */
sendto_one_numeric(source_p, RPL_WHOISIDLE, form_str(RPL_WHOISIDLE),
target_p->name,
(long)(rb_current_time() - target_p->localClient->last),
(unsigned long)target_p->localClient->firsttime);
}
else
{
if (IsDynSpoof(target_p) && (IsOper(source_p) || source_p == target_p))
{
ClearDynSpoof(target_p);
sendto_one_numeric(source_p, RPL_WHOISHOST,
form_str(RPL_WHOISHOST),
target_p->name, target_p->orighost,
show_ip(source_p, target_p) && !EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0")? target_p->sockhost : "255.255.255.255");
SetDynSpoof(target_p);
}
else if(ConfigFileEntry.use_whois_actually && show_ip(source_p, target_p) &&
!EmptyString(target_p->sockhost) && strcmp(target_p->sockhost, "0"))
{
sendto_one_numeric(source_p, RPL_WHOISACTUALLY,
form_str(RPL_WHOISACTUALLY),
target_p->name, target_p->sockhost);
}
}
/* doing_whois_hook must only be called for local clients,
* doing_whois_global_hook must only be called for local targets
*/
/* it is important that these are called *before* RPL_ENDOFWHOIS is
* sent, services compatibility code depends on it. --anfl
*/
if(MyClient(source_p))
call_hook(doing_whois_hook, &hdata);
else
call_hook(doing_whois_global_hook, &hdata);
}
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