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
137
138
139
140
|
/**
* Copyright (C) 2015 MongoDB 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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/scripting/mozjs/db.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/scripting/mozjs/idwrapper.h"
#include "mongo/scripting/mozjs/implscope.h"
#include "mongo/scripting/mozjs/objectwrapper.h"
#include "mongo/scripting/mozjs/valuereader.h"
#include "mongo/scripting/mozjs/valuewriter.h"
#include "mongo/s/d_state.h"
namespace mongo {
namespace mozjs {
const char* const DBInfo::className = "DB";
void DBInfo::getProperty(JSContext* cx,
JS::HandleObject obj,
JS::HandleId id,
JS::MutableHandleValue vp) {
JS::RootedObject parent(cx);
if (!JS_GetPrototype(cx, obj, &parent))
uasserted(ErrorCodes::JSInterpreterFailure, "Couldn't get prototype");
auto scope = getScope(cx);
ObjectWrapper parentWrapper(cx, parent);
// 2nd look into real values, may be cached collection object
if (!vp.isUndefined()) {
if (vp.isObject()) {
ObjectWrapper o(cx, vp);
if (o.hasField("_fullName")) {
auto opContext = scope->getOpContext();
// need to check every time that the collection did not get sharded
if (opContext &&
haveLocalShardingInfo(opContext->getClient(), o.getString("_fullName")))
uasserted(ErrorCodes::BadValue, "can't use sharded collection from db.eval");
}
}
return;
} else if (parentWrapper.hasField(id)) {
parentWrapper.getValue(id, vp);
return;
}
std::string sname = IdWrapper(cx, id).toString();
if (sname.length() == 0 || sname[0] == '_') {
// if starts with '_' we dont return collection, one must use getCollection()
return;
}
// no hit, create new collection
JS::RootedValue getCollection(cx);
parentWrapper.getValue("getCollection", &getCollection);
if (!(getCollection.isObject() && JS_ObjectIsFunction(cx, getCollection.toObjectOrNull()))) {
uasserted(ErrorCodes::BadValue, "getCollection is not a function");
}
JS::AutoValueArray<1> args(cx);
ValueReader(cx, args[0]).fromStringData(sname);
JS::RootedValue coll(cx);
ObjectWrapper(cx, obj).callMethod(getCollection, args, &coll);
uassert(16861,
"getCollection returned something other than a collection",
scope->getDbCollectionProto().instanceOf(coll));
// cache collection for reuse, don't enumerate
ObjectWrapper(cx, obj).defineProperty(sname.c_str(), coll, 0);
vp.set(coll);
}
void DBInfo::construct(JSContext* cx, JS::CallArgs args) {
auto scope = getScope(cx);
if (args.length() != 2)
uasserted(ErrorCodes::BadValue, "db constructor requires 2 arguments");
for (unsigned i = 0; i < args.length(); ++i) {
uassert(ErrorCodes::BadValue,
"db initializer called with undefined argument",
!args.get(i).isUndefined());
}
JS::RootedObject thisv(cx);
scope->getDbProto().newObject(&thisv);
ObjectWrapper o(cx, thisv);
o.setValue("_mongo", args.get(0));
o.setValue("_name", args.get(1));
std::string dbName = ValueWriter(cx, args.get(1)).toString();
if (!NamespaceString::validDBName(dbName))
uasserted(ErrorCodes::BadValue,
str::stream() << "[" << dbName << "] is not a valid database name");
args.rval().setObjectOrNull(thisv);
}
} // namespace mozjs
} // namespace mongo
|
