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
|
/**
* 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/rpc/command_request.h"
#include <string>
#include <utility>
#include "mongo/base/data_range_cursor.h"
#include "mongo/base/data_type_string_data.h"
#include "mongo/base/data_type_terminated.h"
#include "mongo/base/data_type_validated.h"
#include "mongo/bson/simple_bsonobj_comparator.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/rpc/object_check.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/net/message.h"
namespace mongo {
namespace rpc {
namespace {
// None of these include null byte
const std::size_t kMaxDatabaseLength = 63;
const std::size_t kMinDatabaseLength = 1;
const std::size_t kMinCommandNameLength = 1;
const std::size_t kMaxCommandNameLength = 128;
} // namespace
CommandRequest::CommandRequest(const Message* message) : _message(message) {
char* begin = _message->singleData().data();
std::size_t length = _message->singleData().dataLen();
// checked in message_port.cpp
invariant(length <= MaxMessageSizeBytes);
const char* messageEnd = begin + length;
ConstDataRangeCursor cur(begin, messageEnd);
Terminated<'\0', StringData> str;
uassertStatusOK(cur.readAndAdvance<>(&str));
_database = std::move(str.value);
uassert(28636,
str::stream() << "Database parsed in OP_COMMAND message must be between "
<< kMinDatabaseLength
<< " and "
<< kMaxDatabaseLength
<< " bytes. Got: "
<< _database,
(_database.size() >= kMinDatabaseLength) && (_database.size() <= kMaxDatabaseLength));
uassert(
ErrorCodes::InvalidNamespace,
str::stream() << "Invalid database name: '" << _database << "'",
NamespaceString::validDBName(_database, NamespaceString::DollarInDbNameBehavior::Allow));
uassertStatusOK(cur.readAndAdvance<>(&str));
_commandName = std::move(str.value);
uassert(28637,
str::stream() << "Command name parsed in OP_COMMAND message must be between "
<< kMinCommandNameLength
<< " and "
<< kMaxCommandNameLength
<< " bytes. Got: "
<< _database,
(_commandName.size() >= kMinCommandNameLength) &&
(_commandName.size() <= kMaxCommandNameLength));
Validated<BSONObj> obj;
uassertStatusOK(cur.readAndAdvance<>(&obj));
_commandArgs = std::move(obj.val);
uassert(39950,
str::stream() << "Command name parsed in OP_COMMAND message '" << _commandName
<< "' doesn't match command name from object '"
<< _commandArgs.firstElementFieldName()
<< '\'',
_commandArgs.firstElementFieldName() == _commandName);
uassertStatusOK(cur.readAndAdvance<>(&obj));
_metadata = std::move(obj.val);
_inputDocs = DocumentRange{cur.data(), messageEnd};
}
StringData CommandRequest::getDatabase() const {
return _database;
}
StringData CommandRequest::getCommandName() const {
return _commandName;
}
const BSONObj& CommandRequest::getMetadata() const {
return _metadata;
}
const BSONObj& CommandRequest::getCommandArgs() const {
return _commandArgs;
}
DocumentRange CommandRequest::getInputDocs() const {
return _inputDocs;
}
bool operator==(const CommandRequest& lhs, const CommandRequest& rhs) {
return (lhs._database == rhs._database) && (lhs._commandName == rhs._commandName) &&
SimpleBSONObjComparator::kInstance.evaluate(lhs._metadata == rhs._metadata) &&
SimpleBSONObjComparator::kInstance.evaluate(lhs._commandArgs == rhs._commandArgs) &&
(lhs._inputDocs == rhs._inputDocs);
}
bool operator!=(const CommandRequest& lhs, const CommandRequest& rhs) {
return !(lhs == rhs);
}
Protocol CommandRequest::getProtocol() const {
return rpc::Protocol::kOpCommandV1;
}
} // namespace rpc
} // namespace mongo
|
