Filter-Hook Driver

Need a Filter-Hook driver based solution for blocking URLs.

It must work without reboots, support winXP/2000/2003.

Here are some examples of it in C:

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Here is a delphi class we need to be implemented finally:

TOnWebRequestEvent = procedure (Sender: TObject; AUrl: string; var ABlock: Boolean) of object; //if ABlock: =true then URL is being blocked (e.g. tcp packet is not resended to destination host)

TOnMessage = procedure (Sender: TObject; AMessage: string) of object;

TWebBlocker = class(TPersistent)

public

property Active: Boolean; //if true, OnWebRequestEvent will occur if user tries to access any URL ("GET..." command) on any port (because e.g. ISA client and other proxies work via another ports)

procedure Install;

procedure Uninnstall;

property IsInstalled: Boolean; //read-only, shows if the driver is installed

property OnWebRequestEvent: TOnWebRequestEvent read FOnWebRequestEvent write FOnWebRequestEvent;

property OnMessage: TOnMessage read FOnMessage write FOnMessage; //e.g. just for error messages.

end;

So I suppose there must be some kind of communication mechanism implemented between delphi class and hook - to manage OnWebRequestEvent. (e.g. win api events may be used)

Also, will be pelased to listen about possible solutions for Vista.

(as fa as i know, Filter-Hook driver is not supported there but there is an 'api windows filtering platform')

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables):

a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.

b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.

3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).

## Platform

delphi

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项目ID： #3342207

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