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users.cpp
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users.cpp
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/* Routines to maintain a list of online users.
*
* (C) 2003-2019 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#include "services.h"
#include "modules.h"
#include "users.h"
#include "account.h"
#include "protocol.h"
#include "servers.h"
#include "channels.h"
#include "bots.h"
#include "config.h"
#include "opertype.h"
#include "language.h"
#include "sockets.h"
#include "uplink.h"
user_map UserListByNick, UserListByUID;
int OperCount = 0;
unsigned MaxUserCount = 0;
time_t MaxUserTime = 0;
std::list<User *> User::quitting_users;
User::User(const Anope::string &snick, const Anope::string &sident, const Anope::string &shost, const Anope::string &svhost, const Anope::string &uip, Server *sserver, const Anope::string &srealname, time_t ts, const Anope::string &smodes, const Anope::string &suid, NickCore *account) : ip(uip)
{
if (snick.empty() || sident.empty() || shost.empty())
throw CoreException("Bad args passed to User::User");
/* we used to do this by calloc, no more. */
quit = false;
server = NULL;
invalid_pw_count = invalid_pw_time = lastmemosend = lastnickreg = lastmail = 0;
on_access = false;
this->nick = snick;
this->ident = sident;
this->host = shost;
this->vhost = svhost;
this->chost = svhost;
this->server = sserver;
this->realname = srealname;
this->timestamp = this->signon = ts;
this->SetModesInternal(sserver, "%s", smodes.c_str());
this->uid = suid;
this->super_admin = false;
this->nc = NULL;
size_t old = UserListByNick.size();
UserListByNick[snick] = this;
if (!suid.empty())
UserListByUID[suid] = this;
if (old == UserListByNick.size())
Log(LOG_DEBUG) << "Duplicate user " << snick << " in user table?";
this->Login(account);
this->UpdateHost();
if (sserver) // Our bots are introduced on startup with no server
{
++sserver->users;
if (server->IsSynced())
Log(this, "connect") << (!vhost.empty() && vhost != host ? "(" + vhost + ") " : "") << "(" << srealname << ") " << (!uip.empty() && uip != host ? "[" + uip + "] " : "") << "connected to the network (" << sserver->GetName() << ")";
}
if (UserListByNick.size() > MaxUserCount)
{
MaxUserCount = UserListByNick.size();
MaxUserTime = Anope::CurTime;
if (sserver && sserver->IsSynced())
Log(this, "maxusers") << "connected - new maximum user count: " << UserListByNick.size();
}
bool exempt = false;
if (server && server->IsULined())
exempt = true;
FOREACH_MOD(OnUserConnect, (this, exempt));
}
static void CollideKill(User *target, const Anope::string &reason)
{
if (target->server != Me)
target->Kill(Me, reason);
else
{
// Be sure my user is really dead
IRCD->SendQuit(target, "%s", reason.c_str());
// Reintroduce my client
if (BotInfo *bi = dynamic_cast<BotInfo *>(target))
bi->OnKill();
else
target->Quit(reason);
}
}
static void Collide(User *u, const Anope::string &id, const Anope::string &type)
{
// Kill incoming user
IRCD->SendKill(Me, id, type);
// Quit colliding user
CollideKill(u, type);
}
User* User::OnIntroduce(const Anope::string &snick, const Anope::string &sident, const Anope::string &shost, const Anope::string &svhost, const Anope::string &sip, Server *sserver, const Anope::string &srealname, time_t ts, const Anope::string &smodes, const Anope::string &suid, NickCore *nc)
{
// How IRCds handle collisions varies a lot, for safety well just always kill both sides
// With properly set qlines, this can almost never happen anyway
User *u = User::Find(snick, true);
if (u)
{
Collide(u, !suid.empty() ? suid : snick, "Nick collision");
return NULL;
}
if (!suid.empty())
{
u = User::Find(suid);
if (u)
{
Collide(u, suid, "ID collision");
return NULL;
}
}
return new User(snick, sident, shost, svhost, sip, sserver, srealname, ts, smodes, suid, nc);
}
void User::ChangeNick(const Anope::string &newnick, time_t ts)
{
/* Sanity check to make sure we don't segfault */
if (newnick.empty())
throw CoreException("User::ChangeNick() got a bad argument");
this->super_admin = false;
Log(this, "nick") << "(" << this->realname << ") changed nick to " << newnick;
Anope::string old = this->nick;
this->timestamp = ts;
if (this->nick.equals_ci(newnick))
this->nick = newnick;
else
{
NickAlias *old_na = NickAlias::Find(this->nick);
if (old_na && (this->IsIdentified(true) || this->IsRecognized()))
old_na->last_seen = Anope::CurTime;
UserListByNick.erase(this->nick);
this->nick = newnick;
User* &other = UserListByNick[this->nick];
if (other)
{
CollideKill(this, "Nick collision");
CollideKill(other, "Nick collision");
return;
}
other = this;
on_access = false;
NickAlias *na = NickAlias::Find(this->nick);
if (na)
on_access = na->nc->IsOnAccess(this);
if (na && na->nc == this->Account())
{
na->last_seen = Anope::CurTime;
this->UpdateHost();
}
}
FOREACH_MOD(OnUserNickChange, (this, old));
}
void User::SetDisplayedHost(const Anope::string &shost)
{
if (shost.empty())
throw CoreException("empty host? in MY services? it seems it's more likely than I thought.");
this->vhost = shost;
Log(this, "host") << "changed vhost to " << shost;
FOREACH_MOD(OnSetDisplayedHost, (this));
this->UpdateHost();
}
const Anope::string &User::GetDisplayedHost() const
{
if (!this->vhost.empty())
return this->vhost;
else if (this->HasMode("CLOAK") && !this->GetCloakedHost().empty())
return this->GetCloakedHost();
else
return this->host;
}
void User::SetCloakedHost(const Anope::string &newhost)
{
if (newhost.empty())
throw CoreException("empty host in User::SetCloakedHost");
chost = newhost;
Log(this, "host") << "changed cloaked host to " << newhost;
this->UpdateHost();
}
const Anope::string &User::GetCloakedHost() const
{
return chost;
}
const Anope::string &User::GetUID() const
{
if (!this->uid.empty() && IRCD->RequiresID)
return this->uid;
else
return this->nick;
}
void User::SetVIdent(const Anope::string &sident)
{
this->vident = sident;
Log(this, "ident") << "changed vident to " << sident;
this->UpdateHost();
}
const Anope::string &User::GetVIdent() const
{
if (!this->vident.empty())
return this->vident;
else
return this->ident;
}
void User::SetIdent(const Anope::string &sident)
{
this->ident = sident;
Log(this, "ident") << "changed real ident to " << sident;
this->UpdateHost();
}
const Anope::string &User::GetIdent() const
{
return this->ident;
}
Anope::string User::GetMask() const
{
return this->nick + "!" + this->ident + "@" + this->host;
}
Anope::string User::GetDisplayedMask() const
{
return this->nick + "!" + this->GetVIdent() + "@" + this->GetDisplayedHost();
}
void User::SetRealname(const Anope::string &srealname)
{
if (srealname.empty())
throw CoreException("realname empty in SetRealname");
this->realname = srealname;
NickAlias *na = NickAlias::Find(this->nick);
if (na && (this->IsIdentified(true) || this->IsRecognized()))
na->last_realname = srealname;
Log(this, "realname") << "changed realname to " << srealname;
}
User::~User()
{
UnsetExtensibles();
if (this->server != NULL)
{
if (this->server->IsSynced())
Log(this, "disconnect") << "(" << this->realname << ") disconnected from the network (" << this->server->GetName() << ")";
--this->server->users;
}
FOREACH_MOD(OnPreUserLogoff, (this));
ModeManager::StackerDel(this);
this->Logout();
if (this->HasMode("OPER"))
--OperCount;
while (!this->chans.empty())
this->chans.begin()->second->chan->DeleteUser(this);
UserListByNick.erase(this->nick);
if (!this->uid.empty())
UserListByUID.erase(this->uid);
FOREACH_MOD(OnPostUserLogoff, (this));
}
void User::SendMessage(BotInfo *source, const char *fmt, ...)
{
va_list args;
char buf[BUFSIZE] = "";
const char *translated_message = Language::Translate(this, fmt);
va_start(args, fmt);
vsnprintf(buf, BUFSIZE - 1, translated_message, args);
this->SendMessage(source, Anope::string(buf));
va_end(args);
}
void User::SendMessage(BotInfo *source, const Anope::string &msg)
{
const char *translated_message = Language::Translate(this, msg.c_str());
/* Send privmsg instead of notice if:
* - UsePrivmsg is enabled
* - The user is not registered and NSDefMsg is enabled
* - The user is registered and has set /ns set msg on
*/
bool send_privmsg = Config->UsePrivmsg && ((!this->nc && Config->DefPrivmsg) || (this->nc && this->nc->HasExt("MSG")));
sepstream sep(translated_message, '\n', true);
for (Anope::string tok; sep.GetToken(tok);)
{
if (send_privmsg)
IRCD->SendPrivmsg(source, this->GetUID(), "%s", tok.c_str());
else
IRCD->SendNotice(source, this->GetUID(), "%s", tok.c_str());
}
}
void User::Identify(NickAlias *na)
{
if (this->nick.equals_ci(na->nick))
{
na->last_usermask = this->GetIdent() + "@" + this->GetDisplayedHost();
na->last_realhost = this->GetIdent() + "@" + this->host;
na->last_realname = this->realname;
na->last_seen = Anope::CurTime;
}
IRCD->SendLogin(this, na);
this->Login(na->nc);
FOREACH_MOD(OnNickIdentify, (this));
if (this->IsServicesOper())
{
if (!this->nc->o->ot->modes.empty())
{
this->SetModes(NULL, "%s", this->nc->o->ot->modes.c_str());
this->SendMessage(NULL, "Changing your usermodes to \002%s\002", this->nc->o->ot->modes.c_str());
UserMode *um = ModeManager::FindUserModeByName("OPER");
if (um && !this->HasMode("OPER") && this->nc->o->ot->modes.find(um->mchar) != Anope::string::npos)
IRCD->SendOper(this);
}
if (IRCD->CanSetVHost && !this->nc->o->vhost.empty())
{
this->SendMessage(NULL, "Changing your vhost to \002%s\002", this->nc->o->vhost.c_str());
this->SetDisplayedHost(this->nc->o->vhost);
IRCD->SendVhost(this, "", this->nc->o->vhost);
}
}
}
void User::Login(NickCore *core)
{
if (!core || core == this->nc)
return;
this->Logout();
this->nc = core;
core->users.push_back(this);
this->UpdateHost();
if (this->server->IsSynced())
Log(this, "account") << "is now identified as " << this->nc->display;
FOREACH_MOD(OnUserLogin, (this));
}
void User::Logout()
{
if (!this->nc)
return;
Log(this, "account") << "is no longer identified as " << this->nc->display;
std::list<User *>::iterator it = std::find(this->nc->users.begin(), this->nc->users.end(), this);
if (it != this->nc->users.end())
this->nc->users.erase(it);
this->nc = NULL;
}
NickCore *User::Account() const
{
return this->nc;
}
bool User::IsIdentified(bool check_nick) const
{
if (check_nick && this->nc)
{
NickAlias *na = NickAlias::Find(this->nick);
return na && *na->nc == *this->nc;
}
return this->nc ? true : false;
}
bool User::IsRecognized(bool check_secure) const
{
if (check_secure && on_access)
{
const NickAlias *na = NickAlias::Find(this->nick);
if (!na || na->nc->HasExt("NS_SECURE"))
return false;
}
return on_access;
}
bool User::IsServicesOper()
{
if (!this->nc || !this->nc->IsServicesOper())
// No opertype.
return false;
else if (this->nc->o->require_oper && !this->HasMode("OPER"))
return false;
else if (!this->nc->o->certfp.empty() && this->fingerprint != this->nc->o->certfp)
// Certfp mismatch
return false;
else if (!this->nc->o->hosts.empty())
{
bool match = false;
Anope::string match_host = this->GetIdent() + "@" + this->host;
for (unsigned i = 0; i < this->nc->o->hosts.size(); ++i)
if (Anope::Match(match_host, this->nc->o->hosts[i]))
match = true;
if (match == false)
return false;
}
EventReturn MOD_RESULT;
FOREACH_RESULT(IsServicesOper, MOD_RESULT, (this));
if (MOD_RESULT == EVENT_STOP)
return false;
return true;
}
bool User::HasCommand(const Anope::string &command)
{
if (this->IsServicesOper())
return this->nc->o->ot->HasCommand(command);
return false;
}
bool User::HasPriv(const Anope::string &priv)
{
if (this->IsServicesOper())
return this->nc->o->ot->HasPriv(priv);
return false;
}
void User::UpdateHost()
{
if (this->host.empty())
return;
NickAlias *na = NickAlias::Find(this->nick);
on_access = false;
if (na)
on_access = na->nc->IsOnAccess(this);
if (na && (this->IsIdentified(true) || this->IsRecognized()))
{
Anope::string last_usermask = this->GetIdent() + "@" + this->GetDisplayedHost();
Anope::string last_realhost = this->GetIdent() + "@" + this->host;
na->last_usermask = last_usermask;
na->last_realhost = last_realhost;
// This is called on signon, and if users are introduced with an account it won't update
na->last_realname = this->realname;
}
}
bool User::HasMode(const Anope::string &mname) const
{
return this->modes.count(mname);
}
void User::SetModeInternal(const MessageSource &source, UserMode *um, const Anope::string ¶m)
{
if (!um)
return;
this->modes[um->name] = param;
if (um->name == "OPER")
{
++OperCount;
if (this->IsServicesOper())
{
if (!this->nc->o->ot->modes.empty())
{
this->SetModes(NULL, "%s", this->nc->o->ot->modes.c_str());
this->SendMessage(NULL, "Changing your usermodes to \002%s\002", this->nc->o->ot->modes.c_str());
UserMode *oper = ModeManager::FindUserModeByName("OPER");
if (oper && !this->HasMode("OPER") && this->nc->o->ot->modes.find(oper->mchar) != Anope::string::npos)
IRCD->SendOper(this);
}
if (IRCD->CanSetVHost && !this->nc->o->vhost.empty())
{
this->SendMessage(NULL, "Changing your vhost to \002%s\002", this->nc->o->vhost.c_str());
this->SetDisplayedHost(this->nc->o->vhost);
IRCD->SendVhost(this, "", this->nc->o->vhost);
}
}
}
if (um->name == "CLOAK" || um->name == "VHOST")
this->UpdateHost();
FOREACH_MOD(OnUserModeSet, (source, this, um->name));
}
void User::RemoveModeInternal(const MessageSource &source, UserMode *um)
{
if (!um)
return;
this->modes.erase(um->name);
if (um->name == "OPER")
{
--OperCount;
// Don't let people de-oper and remain a SuperAdmin
this->super_admin = false;
}
if (um->name == "CLOAK" || um->name == "VHOST")
{
this->vhost.clear();
this->UpdateHost();
}
FOREACH_MOD(OnUserModeUnset, (source, this, um->name));
}
void User::SetMode(BotInfo *bi, UserMode *um, const Anope::string ¶m)
{
if (!um || HasMode(um->name))
return;
ModeManager::StackerAdd(bi, this, um, true, param);
SetModeInternal(bi, um, param);
}
void User::SetMode(BotInfo *bi, const Anope::string &uname, const Anope::string ¶m)
{
SetMode(bi, ModeManager::FindUserModeByName(uname), param);
}
void User::RemoveMode(BotInfo *bi, UserMode *um, const Anope::string ¶m)
{
if (!um || !HasMode(um->name))
return;
ModeManager::StackerAdd(bi, this, um, false, param);
RemoveModeInternal(bi, um);
}
void User::RemoveMode(BotInfo *bi, const Anope::string &name, const Anope::string ¶m)
{
RemoveMode(bi, ModeManager::FindUserModeByName(name), param);
}
void User::SetModes(BotInfo *bi, const char *umodes, ...)
{
char buf[BUFSIZE] = "";
va_list args;
Anope::string modebuf, sbuf;
int add = -1;
va_start(args, umodes);
vsnprintf(buf, BUFSIZE - 1, umodes, args);
va_end(args);
spacesepstream sep(buf);
sep.GetToken(modebuf);
for (unsigned i = 0, end = modebuf.length(); i < end; ++i)
{
UserMode *um;
switch (modebuf[i])
{
case '+':
add = 1;
continue;
case '-':
add = 0;
continue;
default:
if (add == -1)
continue;
um = ModeManager::FindUserModeByChar(modebuf[i]);
if (!um)
continue;
}
if (add)
{
if (um->type == MODE_PARAM && sep.GetToken(sbuf))
this->SetMode(bi, um, sbuf);
else
this->SetMode(bi, um);
}
else
this->RemoveMode(bi, um);
}
}
void User::SetModesInternal(const MessageSource &source, const char *umodes, ...)
{
char buf[BUFSIZE] = "";
va_list args;
Anope::string modebuf, sbuf;
int add = -1;
va_start(args, umodes);
vsnprintf(buf, BUFSIZE - 1, umodes, args);
va_end(args);
if (this->server && this->server->IsSynced() && Anope::string(buf) != "+")
Log(this, "mode") << "changes modes to " << buf;
spacesepstream sep(buf);
sep.GetToken(modebuf);
for (unsigned i = 0, end = modebuf.length(); i < end; ++i)
{
UserMode *um;
switch (modebuf[i])
{
case '+':
add = 1;
continue;
case '-':
add = 0;
continue;
default:
if (add == -1)
continue;
um = ModeManager::FindUserModeByChar(modebuf[i]);
if (!um)
continue;
}
if (add)
{
if (um->type == MODE_PARAM && sep.GetToken(sbuf))
this->SetModeInternal(source, um, sbuf);
else
this->SetModeInternal(source, um);
}
else
this->RemoveModeInternal(source, um);
}
}
Anope::string User::GetModes() const
{
Anope::string m, params;
for (ModeList::const_iterator it = this->modes.begin(), it_end = this->modes.end(); it != it_end; ++it)
{
UserMode *um = ModeManager::FindUserModeByName(it->first);
if (um == NULL)
continue;
m += um->mchar;
if (!it->second.empty())
params += " " + it->second;
}
return m + params;
}
const User::ModeList &User::GetModeList() const
{
return modes;
}
ChanUserContainer *User::FindChannel(Channel *c) const
{
User::ChanUserList::const_iterator it = this->chans.find(c);
if (it != this->chans.end())
return it->second;
return NULL;
}
bool User::IsProtected()
{
return this->HasMode("PROTECTED") || this->HasMode("GOD") || this->HasPriv("protected") || (this->server && this->server->IsULined());
}
void User::Kill(const MessageSource &source, const Anope::string &reason)
{
Anope::string real_reason = source.GetName() + " (" + reason + ")";
IRCD->SendSVSKill(source, this, "%s", real_reason.c_str());
}
void User::KillInternal(const MessageSource &source, const Anope::string &reason)
{
if (this->quit)
{
Log(LOG_DEBUG) << "Duplicate quit for " << this->nick;
return;
}
Log(this, "killed") << "was killed by " << source.GetName() << " (Reason: " << reason << ")";
this->Quit(reason);
}
void User::Quit(const Anope::string &reason)
{
if (this->quit)
{
Log(LOG_DEBUG) << "Duplicate quit for " << this->nick;
return;
}
FOREACH_MOD(OnUserQuit, (this, reason));
this->quit = true;
quitting_users.push_back(this);
}
bool User::Quitting() const
{
return this->quit;
}
Anope::string User::Mask() const
{
Anope::string mask;
const Anope::string &mident = this->GetIdent();
const Anope::string &mhost = this->GetDisplayedHost();
if (mident[0] == '~')
mask = "*" + mident + "@";
else
mask = mident + "@";
sockaddrs addr(mhost);
if (addr.valid() && addr.sa.sa_family == AF_INET)
{
size_t dot = mhost.rfind('.');
mask += mhost.substr(0, dot) + (dot == Anope::string::npos ? "" : ".*");
}
else
{
size_t dot = mhost.find('.');
if (dot != Anope::string::npos && mhost.find('.', dot + 1) != Anope::string::npos)
mask += "*" + mhost.substr(dot);
else
mask += mhost;
}
return mask;
}
bool User::BadPassword()
{
if (!Config->GetBlock("options")->Get<int>("badpasslimit"))
return false;
if (Config->GetBlock("options")->Get<time_t>("badpasstimeout") > 0 && this->invalid_pw_time > 0 && this->invalid_pw_time < Anope::CurTime - Config->GetBlock("options")->Get<time_t>("badpasstimeout"))
this->invalid_pw_count = 0;
++this->invalid_pw_count;
this->invalid_pw_time = Anope::CurTime;
if (this->invalid_pw_count >= Config->GetBlock("options")->Get<int>("badpasslimit"))
{
this->Kill(Me, "Too many invalid passwords");
return true;
}
return false;
}
User* User::Find(const Anope::string &name, bool nick_only)
{
if (!nick_only && IRCD && IRCD->RequiresID)
{
user_map::iterator it = UserListByUID.find(name);
if (it != UserListByUID.end())
return it->second;
if (IRCD->AmbiguousID)
return NULL;
}
user_map::iterator it = UserListByNick.find(name);
if (it != UserListByNick.end())
return it->second;
return NULL;
}
void User::QuitUsers()
{
for (std::list<User *>::iterator it = quitting_users.begin(), it_end = quitting_users.end(); it != it_end; ++it)
delete *it;
quitting_users.clear();
}