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// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "Group.h"
#include "Channel.h"
#include "User.h"
#ifdef MURMUR
#include "ServerUser.h"
#include <QtCore/QStack>
#endif
Group::Group(Channel *assoc, const QString &name) {
c = assoc;
bInherit = true;
bInheritable = true;
qsName = name;
if (c)
c->qhGroups[name] = this;
}
#ifdef MURMUR
QSet<int> Group::members() {
QStack<Group *> s;
QSet<int> m;
Channel *p;
Group *g;
int i;
p = c;
while (p) {
g = p->qhGroups.value(qsName);
if (g) {
if ((p != c) && ! g->bInheritable)
break;
s.push(g);
if (! g->bInherit)
break;
}
p = p->cParent;
}
while (! s.isEmpty()) {
g = s.pop();
foreach(i, g->qsAdd)
m.insert(i);
foreach(i, g->qsRemove)
m.remove(i);
}
return m;
}
Group *Group::getGroup(Channel *chan, QString name) {
Channel *p = chan;
while (p) {
Group *g = p->qhGroups.value(name);
if (g) {
if (chan == p)
return g;
else if (g->bInheritable)
return g;
else
return NULL;
}
p = p->cParent;
}
return NULL;
}
QSet<QString> Group::groupNames(Channel *chan) {
QStack<Channel *> s;
QSet<QString> m;
Channel *c = chan;
Group *g;
while (c) {
s.push(c);
c = c->cParent;
}
while (! s.isEmpty()) {
c = s.pop();
foreach(g, c->qhGroups) {
if ((chan != c) && (! g->bInheritable))
m.remove(g->qsName);
else
m.insert(g->qsName);
}
}
return m;
}
#define RET_FALSE (invert ? true : false)
#define RET_TRUE (invert ? false : true)
bool Group::isMember(Channel *curChan, Channel *aclChan, QString name, ServerUser *pl) {
Channel *p;
Channel *c;
Group *g;
bool m = false;
bool invert = false;
bool token = false;
bool hash = false;
c = curChan;
while (true) {
if (name.isEmpty())
return false;
if (name.startsWith(QChar::fromLatin1('!'))) {
invert = true;
name = name.remove(0,1);
continue;
}
if (name.startsWith(QChar::fromLatin1('~'))) {
c = aclChan;
name = name.remove(0,1);
continue;
}
if (name.startsWith(QChar::fromLatin1('#'))) {
token = true;
name = name.remove(0,1);
continue;
}
if (name.startsWith(QChar::fromLatin1('$'))) {
hash = true;
name = name.remove(0,1);
continue;
}
break;
}
if (token)
m = pl->qslAccessTokens.contains(name, Qt::CaseInsensitive);
else if (hash)
m = pl->qsHash == name;
else if (name == QLatin1String("none"))
m = false;
else if (name == QLatin1String("all"))
m = true;
else if (name == QLatin1String("auth"))
m = (pl->iId >= 0);
else if (name == QLatin1String("strong"))
m = pl->bVerified;
else if (name == QLatin1String("in"))
m = (pl->cChannel == c);
else if (name == QLatin1String("out"))
m = !(pl->cChannel == c);
else if (name == QLatin1String("sub")
|| name.startsWith(QLatin1String("sub,"))) {
name = name.remove(0,4);
int mindesc = 1;
int maxdesc = 1000;
int minpath = 0;
QStringList args = name.split(QLatin1String(","));
if (args.count() >= 3) {
maxdesc = args[2].isEmpty() ? maxdesc : args[2].toInt();
}
if (args.count() >= 2) {
mindesc = args[1].isEmpty() ? mindesc : args[1].toInt();
}
if (args.count() >= 1) {
minpath = args[0].isEmpty() ? minpath : args[0].toInt();
}
Channel *home = pl->cChannel;
QList<Channel *> playerChain;
QList<Channel *> groupChain;
p = home;
while (p) {
playerChain.prepend(p);
p = p->cParent;
}
p = curChan;
while (p) {
groupChain.prepend(p);
p = p->cParent;
}
int cofs = groupChain.indexOf(c);
Q_ASSERT(cofs != -1);
cofs += minpath;
if (cofs >= groupChain.count()) {
return RET_FALSE;
} else if (cofs < 0) {
cofs = 0;
}
Channel *needed = groupChain[cofs];
if (playerChain.indexOf(needed) == -1) {
return RET_FALSE;
}
int mindepth = cofs + mindesc;
int maxdepth = cofs + maxdesc;
int pdepth = playerChain.count() - 1;
m = (pdepth >= mindepth) && (pdepth <= maxdepth);
} else {
QStack<Group *> s;
p = c;
while (p) {
g = p->qhGroups.value(name);
if (g) {
if ((p != c) && ! g->bInheritable)
break;
s.push(g);
if (! g->bInherit)
break;
}
p = p->cParent;
}
while (! s.isEmpty()) {
g = s.pop();
if (g->qsAdd.contains(pl->iId) || g->qsTemporary.contains(pl->iId) || g->qsTemporary.contains(- static_cast<int>(pl->uiSession)))
m = true;
if (g->qsRemove.contains(pl->iId))
m = false;
}
}
return invert ? !m : m;
}
#endif
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