1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
// commands.cpp
/**
* Copyright (C) 2012 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pch.h"
#include "pdfile.h"
#include "jsobj.h"
#include "../bson/util/builder.h"
#include <time.h>
#include "introspect.h"
#include "../util/lruishmap.h"
#include "json.h"
#include "repl.h"
#include "commands.h"
#include "cmdline.h"
#include "../scripting/engine.h"
namespace mongo {
const int edebug=0;
bool dbEval(const string& dbName, BSONObj& cmd, BSONObjBuilder& result, string& errmsg) {
BSONElement e = cmd.firstElement();
uassert( 10046 , "eval needs Code" , e.type() == Code || e.type() == CodeWScope || e.type() == String );
const char *code = 0;
switch ( e.type() ) {
case String:
case Code:
code = e.valuestr();
break;
case CodeWScope:
code = e.codeWScopeCode();
break;
default:
verify(0);
}
verify( code );
if ( ! globalScriptEngine ) {
errmsg = "db side execution is disabled";
return false;
}
auto_ptr<Scope> s = globalScriptEngine->getPooledScope( dbName );
ScriptingFunction f = s->createFunction(code);
if ( f == 0 ) {
errmsg = (string)"compile failed: " + s->getError();
return false;
}
if ( e.type() == CodeWScope )
s->init( e.codeWScopeScopeDataUnsafe() );
s->localConnect( dbName.c_str() );
BSONObj args;
{
BSONElement argsElement = cmd.getField("args");
if ( argsElement.type() == Array ) {
args = argsElement.embeddedObject();
if ( edebug ) {
out() << "args:" << args.toString() << endl;
out() << "code:\n" << code << endl;
}
}
}
int res;
{
Timer t;
res = s->invoke(f, &args, 0, cmdLine.quota ? 10 * 60 * 1000 : 0 );
int m = t.millis();
if ( m > cmdLine.slowMS ) {
out() << "dbeval slow, time: " << dec << m << "ms " << dbName << endl;
if ( m >= 1000 ) log() << code << endl;
else OCCASIONALLY log() << code << endl;
}
}
if ( res ) {
result.append("errno", (double) res);
errmsg = "invoke failed: ";
errmsg += s->getError();
return false;
}
s->append( result , "retval" , "return" );
return true;
}
// SERVER-4328 todo review for concurrency
class CmdEval : public Command {
public:
virtual bool slaveOk() const {
return false;
}
virtual void help( stringstream &help ) const {
help << "Evaluate javascript at the server.\n" "http://dochub.mongodb.org/core/serversidecodeexecution";
}
virtual LockType locktype() const { return NONE; }
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
// $eval can do pretty much anything, so require all privileges.
out->push_back(Privilege(PrivilegeSet::WILDCARD_RESOURCE,
AuthorizationManager::getAllUserActions()));
}
CmdEval() : Command("eval", false, "$eval") { }
bool run(const string& dbname , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
if ( cmdObj["nolock"].trueValue() ) {
return dbEval(dbname, cmdObj, result, errmsg);
}
Lock::GlobalWrite lk;
Client::Context ctx( dbname );
return dbEval(dbname, cmdObj, result, errmsg);
}
} cmdeval;
} // namespace mongo
|
