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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// insert.cpp
/**
* Copyright (C) 2008 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/>.
*
* 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/db/ops/insert.h"
#include "mongo/db/global_optime.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
using namespace mongoutils;
StatusWith<BSONObj> fixDocumentForInsert( const BSONObj& doc ) {
if ( doc.objsize() > BSONObjMaxUserSize )
return StatusWith<BSONObj>( ErrorCodes::BadValue,
str::stream()
<< "object to insert too large"
<< ". size in bytes: " << doc.objsize()
<< ", max size: " << BSONObjMaxUserSize );
bool firstElementIsId = doc.firstElement().fieldNameStringData() == "_id";
bool hasTimestampToFix = false;
{
BSONObjIterator i( doc );
while ( i.more() ) {
BSONElement e = i.next();
if ( e.type() == Timestamp && e.timestampValue() == 0 ) {
// we replace Timestamp(0,0) at the top level with a correct value
// in the fast pass, we just mark that we want to swap
hasTimestampToFix = true;
}
const char* fieldName = e.fieldName();
if ( fieldName[0] == '$' ) {
return StatusWith<BSONObj>( ErrorCodes::BadValue,
str::stream()
<< "Document can't have $ prefixed field names: "
<< e.fieldName() );
}
// check no regexp for _id (SERVER-9502)
// also, disallow undefined and arrays
if ( str::equals( fieldName, "_id") ) {
if ( e.type() == RegEx ) {
return StatusWith<BSONObj>( ErrorCodes::BadValue,
"can't use a regex for _id" );
}
if ( e.type() == Undefined ) {
return StatusWith<BSONObj>( ErrorCodes::BadValue,
"can't use a undefined for _id" );
}
if ( e.type() == Array ) {
return StatusWith<BSONObj>( ErrorCodes::BadValue,
"can't use an array for _id" );
}
if ( e.type() == Object ) {
BSONObj o = e.Obj();
Status s = o.storageValidEmbedded();
if ( !s.isOK() )
return StatusWith<BSONObj>( s );
}
}
}
}
if ( firstElementIsId && !hasTimestampToFix )
return StatusWith<BSONObj>( BSONObj() );
bool hadId = firstElementIsId;
BSONObjIterator i( doc );
BSONObjBuilder b( doc.objsize() + 16 );
if ( firstElementIsId ) {
b.append( doc.firstElement() );
i.next();
}
else {
BSONElement e = doc["_id"];
if ( e.type() ) {
b.append( e );
hadId = true;
}
else {
b.appendOID( "_id", NULL, true );
}
}
while ( i.more() ) {
BSONElement e = i.next();
if ( hadId && e.fieldNameStringData() == "_id" ) {
// no-op
}
else if ( e.type() == Timestamp && e.timestampValue() == 0 ) {
b.append( e.fieldName(), getNextGlobalOptime() );
}
else {
b.append( e );
}
}
return StatusWith<BSONObj>( b.obj() );
}
Status userAllowedWriteNS( const StringData& ns ) {
return userAllowedWriteNS( nsToDatabaseSubstring( ns ), nsToCollectionSubstring( ns ) );
}
Status userAllowedWriteNS( const NamespaceString& ns ) {
return userAllowedWriteNS( ns.db(), ns.coll() );
}
Status userAllowedWriteNS( const StringData& db, const StringData& coll ) {
// validity checking
if ( db.size() == 0 )
return Status( ErrorCodes::BadValue, "db cannot be blank" );
if ( !NamespaceString::validDBName( db ) )
return Status( ErrorCodes::BadValue, "invalid db name" );
if ( coll.size() == 0 )
return Status( ErrorCodes::BadValue, "collection cannot be blank" );
if ( !NamespaceString::validCollectionName( coll ) )
return Status( ErrorCodes::BadValue, "invalid collection name" );
if ( db.size() + 1 /* dot */ + coll.size() > NamespaceString::MaxNsCollectionLen )
return Status( ErrorCodes::BadValue,
str::stream()
<< "fully qualified namespace " << db << '.' << coll << " is too long "
<< "(max is " << NamespaceString::MaxNsCollectionLen << " bytes)" );
// check spceial areas
if ( db == "system" )
return Status( ErrorCodes::BadValue, "cannot use 'system' database" );
if ( coll.startsWith( "system." ) ) {
if ( coll == "system.indexes" ) return Status::OK();
if ( coll == "system.js" ) return Status::OK();
if ( coll == "system.profile" ) return Status::OK();
if ( coll == "system.users" ) return Status::OK();
if ( db == "admin" ) {
if ( coll == "system.version" ) return Status::OK();
if ( coll == "system.roles" ) return Status::OK();
if ( coll == "system.new_users" ) return Status::OK();
if ( coll == "system.backup_users" ) return Status::OK();
}
if ( db == "local" ) {
if ( coll == "system.replset" ) return Status::OK();
}
return Status( ErrorCodes::BadValue,
str::stream() << "cannot write to '" << db << "." << coll << "'" );
}
// some special rules
if ( coll.find( ".system." ) != string::npos ) {
// this matches old (2.4 and older) behavior, but I'm not sure its a good idea
return Status( ErrorCodes::BadValue,
str::stream() << "cannot write to '" << db << "." << coll << "'" );
}
return Status::OK();
}
}
|
