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// s_only.cpp
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "pch.h"
#include "mongo/client/connpool.h"
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/authz_session_external_state_s.h"
#include "mongo/s/shard.h"
#include "mongo/s/grid.h"
#include "request.h"
#include "client_info.h"
#include "../db/dbhelpers.h"
#include "../db/matcher.h"
#include "../db/commands.h"
/*
most a pile of hacks to make linking nicer
*/
namespace mongo {
void* remapPrivateView(void *oldPrivateAddr) {
log() << "remapPrivateView called in mongos, aborting" << endl;
fassertFailed(16462);
}
/** When this callback is run, we record a shard that we've used for useful work
* in an operation to be read later by getLastError()
*/
void usingAShardConnection( const string& addr ) {
ClientInfo::get()->addShard( addr );
}
TSP_DEFINE(Client,currentClient)
LockState::LockState(){} // ugh
Client::Client(const string& desc, AbstractMessagingPort *p) :
ClientBasic(p),
_context(0),
_shutdown(false),
_desc(desc),
_god(0),
_lastOp(0) {
}
Client::~Client() {}
bool Client::shutdown() { return true; }
Client& Client::initThread(const char *desc, AbstractMessagingPort *mp) {
// mp is non-null only for client connections, and mongos uses ClientInfo for those
massert(16478, "Client being used for incoming connection thread in mongos", mp == NULL);
verify( currentClient.get() == 0 );
string fullDesc = desc;
if ( str::equals( "conn" , desc ) && mp != NULL )
fullDesc = str::stream() << desc << mp->connectionId();
setThreadName( fullDesc.c_str() );
Client *c = new Client( fullDesc, mp );
currentClient.reset(c);
mongo::lastError.initThread();
c->setAuthorizationSession(new AuthorizationSession(new AuthzSessionExternalStateMongos()));
return *c;
}
/* resets the client for the current thread */
// Needed here since we may want to use for testing when linked against mongos
void Client::resetThread( const StringData& origThreadName ) {
verify( currentClient.get() != 0 );
// Detach all client info from thread
mongo::lastError.reset(NULL);
currentClient.get()->shutdown();
currentClient.reset(NULL);
setThreadName( origThreadName.rawData() );
}
string Client::clientAddress(bool includePort) const {
ClientInfo * ci = ClientInfo::get();
if ( ci )
return ci->getRemote();
return "";
}
// Need a version that takes a Client to match the mongod interface so the web server can call
// execCommand and not need to worry if it's in a mongod or mongos.
void Command::execCommand(Command * c,
Client& client,
int queryOptions,
const char *ns,
BSONObj& cmdObj,
BSONObjBuilder& result,
bool fromRepl ) {
execCommandClientBasic(c, client, queryOptions, ns, cmdObj, result, fromRepl);
}
void Command::execCommandClientBasic(Command * c ,
ClientBasic& client,
int queryOptions,
const char *ns,
BSONObj& cmdObj,
BSONObjBuilder& result,
bool fromRepl ) {
verify(c);
std::string dbname = nsToDatabase(ns);
// Access control checks
if (AuthorizationManager::isAuthEnabled()) {
std::vector<Privilege> privileges;
c->addRequiredPrivileges(dbname, cmdObj, &privileges);
AuthorizationSession* authSession = client.getAuthorizationSession();
if (!authSession->checkAuthForPrivileges(privileges).isOK()) {
result.append("note", str::stream() << "not authorized for command: " <<
c->name << " on database " << dbname);
appendCommandStatus(result, false, "unauthorized");
return;
}
}
if (c->adminOnly() &&
c->localHostOnlyIfNoAuth(cmdObj) &&
!AuthorizationManager::isAuthEnabled() &&
!client.getIsLocalHostConnection()) {
log() << "command denied: " << cmdObj.toString() << endl;
appendCommandStatus(result,
false,
"unauthorized: this command must run from localhost when running db "
"without auth");
return;
}
if (c->adminOnly() && !startsWith(ns, "admin.")) {
log() << "command denied: " << cmdObj.toString() << endl;
appendCommandStatus(result, false, "access denied - use admin db");
return;
}
// End of access control checks
if (cmdObj.getBoolField("help")) {
stringstream help;
help << "help for: " << c->name << " ";
c->help( help );
result.append( "help" , help.str() );
result.append( "lockType" , c->locktype() );
appendCommandStatus(result, true, "");
return;
}
std::string errmsg;
bool ok;
try {
ok = c->run( dbname , cmdObj, queryOptions, errmsg, result, false );
}
catch (DBException& e) {
ok = false;
int code = e.getCode();
if (code == RecvStaleConfigCode) { // code for StaleConfigException
throw;
}
stringstream ss;
ss << "exception: " << e.what();
errmsg = ss.str();
result.append( "code" , code );
}
appendCommandStatus(result, ok, errmsg);
}
}
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