[Wireshark-dev] Handling malformed packet exceptions from within ASN.1 dissectors
Hi folks, I am using some of the existing ASN.1 dissectors from within the ieee802.11 dissector, and in some cases the frame is malformed in the ASN.1 portion. However, since it is within an IE where I know the length of the element, I would like to regain control and add an Expert Info and then keep dissecting. How can I handle this? -- Regards, Richard Sharpe (何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者) ___ Sent via:Wireshark-dev mailing list Archives:https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-requ...@wireshark.org?subject=unsubscribe
Re: [Wireshark-dev] Handling malformed packet exceptions from within ASN.1 dissectors
Hi, I think a TRY CATCH block is the thing to use. Grep for CTACH and I think you will find a bunch of examples. Regards Anders -Original Message- From: Wireshark-dev On Behalf Of Richard Sharpe Sent: den 3 november 2020 00:26 To: Developer support list for Wireshark Subject: [Wireshark-dev] Handling malformed packet exceptions from within ASN.1 dissectors Hi folks, I am using some of the existing ASN.1 dissectors from within the ieee802.11 dissector, and in some cases the frame is malformed in the ASN.1 portion. However, since it is within an IE where I know the length of the element, I would like to regain control and add an Expert Info and then keep dissecting. How can I handle this? -- Regards, Richard Sharpe (何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者) ___ Sent via:Wireshark-dev mailing list Archives:https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-requ...@wireshark.org?subject=unsubscribe smime.p7s Description: S/MIME cryptographic signature ___ Sent via:Wireshark-dev mailing list Archives:https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-requ...@wireshark.org?subject=unsubscribe
Re: [Wireshark-dev] Handling malformed packet exceptions from within ASN.1 dissectors
On Mon, Nov 2, 2020 at 11:57 PM Anders Broman via Wireshark-dev wrote: > > Hi, > I think a TRY CATCH block is the thing to use. Grep for CTACH and I think you > will find a bunch of examples. Yeah, I found them. But then I found that the ASN.1 dissectors already handle the situation and my problem was elsewhere :-) -- Regards, Richard Sharpe (何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者) ___ Sent via:Wireshark-dev mailing list Archives:https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-requ...@wireshark.org?subject=unsubscribe
