Validating and parsing engine for system configuration and support command messages

• US 6,286,035 B1
• Filed: 02/01/1999
• Issued: 09/04/2001
• Est. Priority Date: 02/01/1999
• Status: Expired due to Term

• Current Assignee: Nokia of America Corporation (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Gillis, Philip William, Giulianelli, Danilo
• Primary Examiner(s): Lim, Krisna
• Application Number:
  US09/240,826
• Time in Patent Office: 946 Days
• Field of Search: 709/206, 709/303, 717/5, 717/7
• US Class Current: 709/206
• CPC Class Codes: H04L 63/1441 Countermeasures against malicious traffic countermeasures against attacks on cryptographic mechanisms H04L9/002
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

Methods for parsing and validating a command message produced by a network element in a network utilizes table-drive approach. The messages are parsed by a parsing engine in object code stored at the network element and which operatively breaks down each of the messages into its constituent parameters. As each parameter is parsed, it is compared to a set of allowed values in object code stored in tables at the network element. Each validated parameter is entered into a data structure so that a valid message is populated. The methods allow for quick parsing and validation of existing messages and simple updating of the tables to allow for validation of new messages.

Claims

1. A method of configuring and supporting command messages in a network that responds to command requests from a plurality of network elements each having an interface that communicates with an operations support system of the network, comprising the steps of:

receiving at one of the plural network elements from the operations support system, through the interface of the one network element, a set of data that comprises a set of allowed parameters that will make up a potential command message;

storing the received set of data in a memory at the one network element;

generating at the one network element from the received set of data a potential command message which comprises a set of constituent parameters;

parsing the potential command message generated at the network element into its constituent parameters;

comparing each of the constituent parameters from the parsed potential command message to the set of allowed parameters in the memory and determining from said comparison whether each said constituent parameter is an allowed parameter; and

populating a data structure at the one network element with all of the constituent parameters that have been determined to be allowed parameters.

2. The method recited in claim 1, further comprising the step of accessing a database that comprises the set of data of the allowed parameters to obtain the set of allowed parameters data for receipt at one of the network elements.

3. The method recited in claim 2, further comprising the step of formatting the set of data of the allowed parameters obtained from the database into a set of tables corresponding to an allowed format of the allowed parameters in a system language that the operations support system operatively uses to command and control the network.

4. The method recited in claim 3, wherein the system language comprises Transaction Language 1.

5. The method recited in claim 4, wherein said formatting step comprises the step of generating the set of tables in a source code language.

6. The method recited in claim 5, further comprising the step of accessing a software engine source code that contains commands for controlling parsing of the command message into its constituent parameters, wherein the engine source code is written in the source code language of the set of tables.

7. The method recited in claim 6, further comprising the step of compiling the set of tables in the source code language and the software engine source code into object code.

8. A method of parsing and validating a message that is generated by a network element in a network, comprising the steps of:

receiving from the network element a data string comprising a potentially valid command message, and storing the received data string in a format in a buffer;

parsing the data string by separating the data string into constituent parts which comprise a set of potentially allowed parameters;

validating each of the potentially allowed parameters from the parsed data string by comparing said each potentially allowable parameter to a set of allowable parameters stored in a table; and

populating a data structure with all of the validated parameters.

9. The method recited in claim 8, wherein said parsing step comprises accessing a message parsing object code which has been generated by an operations support system of the network.

10. The method recited in claim 9, wherein said validating step comprises accessing a set of tables in object code form which have been generated by the operations support system of the network.

11. The method recited in claim 10, wherein the format comprises Transaction Language 1 format.

12. The method recited in claim 11, further comprising the step of outputting the populated data structure to a network element system code.