1 files changed, 128 insertions, 0 deletions
diff --git a/src/mongo/rpc/command_request.cpp b/src/mongo/rpc/command_request.cpp
new file mode 100644
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+++ b/src/mongo/rpc/command_request.cpp
@@ -0,0 +1,128 @@
+/**
+ *    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/db/jsobj.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);
+
+        _database = uassertStatusOK(cur.readAndAdvance<Terminated<'\0', StringData>>());
+
+        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));
+
+        _commandName = uassertStatusOK(cur.readAndAdvance<Terminated<'\0', StringData>>());
+
+        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));
+
+        uassertStatusOK(cur.readAndAdvance<BSONObj>(&_metadata));
+        uassertStatusOK(cur.readAndAdvance<BSONObj>(&_commandArgs));
+        _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 std::tie(lhs._database,
+                        lhs._commandName,
+                        lhs._metadata,
+                        lhs._commandArgs,
+                        lhs._inputDocs) ==
+               std::tie(rhs._database,
+                        rhs._commandName,
+                        rhs._metadata,
+                        rhs._commandArgs,
+                        rhs._inputDocs);
+    }
+
+    bool operator!=(const CommandRequest& lhs, const CommandRequest& rhs) {
+        return !(lhs == rhs);
+    }
+
+}  // namespace rpc
+}  // namespace mongo