METHOD AND APPARATUS FOR REPAIRING A FILE

• US 20150222645A1
• Filed: 04/16/2015
• Published: 08/06/2015
• Est. Priority Date: 10/17/2012
• Status: Active Grant

• Current Assignee: Tencent Technology Company Limited (Tencent Holdings Limited)
• Original Assignee: Tencent Technology Company Limited (Tencent Holdings Limited)
• Inventors: YANG, Zuohui
• Granted Patent: US 9,686,310 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/11 File system administration, e.g. details of archiving or snapshots file system backup G06F11/14
• CPC Class Codes: G06F 21/56 Computer malware detection or handling, e.g. anti-virus arrangements
• CPC Class Codes: G06F 21/562 Static detection
• CPC Class Codes: G06F 21/565 by checking file integrity
• CPC Class Codes: G06F 21/568 eliminating virus, restoring damaged files
• CPC Class Codes: H04L 63/145 the attack involving the propagation of malware through the network, e.g. viruses, trojans or worms
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46

Abstract

The present disclosure describes a method for repairing a file. A user device searches for a defect file corrupted by a virus file, obtains a virus file name of the virus file and transmits the virus file name to a server. The user device receives an indication transmitted by the server and generates first characteristic information according to the indication; wherein the indication includes information of positions of the defect file that will not be modified by the virus file. The user device transmits the first characteristic information to the server, such that the server obtains a repairing file corresponding to the first characteristic information. The user device replaces the defect file with the repairing file.

Claims

1. A method for repairing a file, comprising:

searching a user device for a defect file corrupted by a virus file;

obtaining, by the user device, a virus file name of the virus file and transmitting the virus file name to a server;

receiving, by the user device, an indication transmitted by the server in response to the virus file name;

wherein the indication includes information of positions of the defect file that will not be modified by the virus file;

generating, by the user device, first characteristic information according to the indication and transmitting the first characteristic information to the server, such that the server obtains a repairing file corresponding to the first characteristic information; and

receiving, by the user device, the repairing file and replacing the defect file with the repairing file.

2. The method of claim 1, wherein first characteristic information comprises first hash values;

the generating the first characteristic information according to the indication comprises;

retrieving, by the user device from the defect file, information on positions corresponding to the information in the indication; and

calculating the first hash values according to the information retrieved.

3. The method of claim 1, wherein the receiving the repairing file comprises:

obtaining, by the user device, a downloading path of the repairing file from the server; and

downloading, by the user device, the repairing file according to the downloading path from a third party.

4. The method of claim 1, wherein the receiving the repairing file comprises:

transmitting, by the user device, a downloading request to the server; and

receiving, by the user device, the repairing file transmitted by the server in response to the downloading request.

5. A method for repairing a file, comprising:

receiving, by a server, a virus file name transmitted by a user device;

determining, by the server, whether a defect file corrupted by a virus file corresponding to the virus file name can be repaired according to the virus file name;

if the defect file can be repaired, transmitting, by the server, an indication comprising information of positions of the defect file that will not be modified by the virus file to the user device;

receiving, by the server, first characteristic information from the user device, wherein the first characteristic information is generated according to information retrieved from positions corresponding to the information in the indication of the defect file;

determining, whether the first characteristic information is consistent with second characteristic information of a repairing file; and

if the first characteristic information is consistent with the second characteristic information, providing, by the server, a downloading path of the repairing file or providing the repairing file to the user device.

6. The method of claim 5, wherein the determining whether the defect file can be repaired according to the virus file name comprises:

determining, by the server, whether information on the positions will not be modified by the virus file can identify the repairing file;

if the information on the positions will not be modified by the virus file can identify the repairing file, determining, by the server, that the defect file can be repaired.

7. The method of claim 5, further comprising:

retrieving, by the server, information from predefined positions of the repairing file; and

generating, by the server, the second characteristic information of the repairing file according to the retrieved information.

8. A user device for repairing a file, comprising:

one or more processors;

memory; and

one or more program modules stored in the memory and to be executed by the one or more processors, the one or more program modules comprise;

a searching module, to search the user device for a defect file corrupted by a virus file and obtain a virus file name of the virus file;

a first characteristic information obtaining module, to receive an indication from a server and generate first characteristic information according to the indication;

wherein the indication comprises information of positions of the defect file that will not be modified by the virus file;

a repairing file obtaining module, to obtain a repairing file corresponding to the first characteristic information, wherein the repairing file is provided by the server if the first characteristic information of the defect file is consistent with second characteristic information of the repairing file; and

a replacing module, to replace the defect file with the repairing file.

9. The user device of claim 8, wherein the first characteristic information obtaining module further comprises:

a first retrieving unit, to retrieve information on positions corresponding to the information in the indication from the defect file; and

a first hash value generating unit, to generate first hash values according to the information retrieved.

10. The user device of claim 8, further comprising:

a downloading path obtaining module, to obtain a downloading path of the repairing file; and

the repairing file obtaining module is further to download the repairing file according to the downloading path.

11. The user device of claim 8, wherein the repairing file obtaining module is further to transmit a downloading request to the server, and receive the repairing file transmitted by the server in response to the downloading request.