When using Scapy, I am unable to set the AS_PATH attribute. I have tried following the answer provided in this StackOverflow page How to use AS_PATH attribute in scapy for BGP?, but it did not work. I have also tried inputting the following statements in the attribute parameter, but I have not been able to.
setAS=BGPPathAttr(type_flags="Transitive", type_code="AS_PATH", attribute="2")
setAS=BGPPathAttr(type_flags="Transitive", type_code="AS_PATH",attr_len=None,attribute=BGPPAAS4BytesPath(segments=BGPPAAS4BytesPath().ASPathSegment(segment_type=2,segment_length=None,segment_value=[2])))
My desired outcome is to send a packet with the AS_PATH value of 2.
AS_PATH is well-known mandatory, not transitive.
Related
I need to repair an XML file in TypeScript and I cannot find any info on it, since everyone who posts something like this has different needs. I'd like to be pointed in the right direction here.
I have an XML request as shown below. It is autogenerated by node-soap when given JSON. Using the WSDL, node-soap attempts to fill in the namespace prefixes for each property. The problem is, it gets them wrong a lot.
In this example below, q106 should be replaced with hep3.
<soap:Envelope q15="some-good-url" q106="some-good-url-1" q98-"some-good-url-2>
...
<q98:SalesOrderAuditInfo>
<q15:ConfirmedBy xsi:nil="true"></q15:ConfirmedBy>
<q15:ConfirmedDate>0001-01-01T00:00:00</q15:ConfirmedDate>
<q15:CreatedBy>
<q106:ID>103</q106:ID>
<q106:Value>System, System</q106:Value>
</q15:CreatedBy>
<q15:CreatedDate>2022-10-26T00:43:13.413</q15:CreatedDate>
<q15:SalesOrderType>Standard</q15:SalesOrderType>
</q98:SalesOrderAuditInfo>
I know which namespace prefixes are bad because I have a sample request that was supplied to me. It's just XML. It looks like this:
<soap:Envelope hep="some-good-url" hep1="some-good-url-1" hep2-"some-good-url-2 hep3="some-good-url-3">
...
<hep2:SalesOrderAuditInfo>
<hep:ConfirmedBy xsi:nil="true"></hep:ConfirmedBy>
<hep:ConfirmedBy:ConfirmedDate>0</hep:ConfirmedByConfirmedDate>
<hep:CreatedBy>
<hep3:ID>103</hep3:ID>
<hep3:Value>System, System</hep3:Value>
</hep:CreatedBy>
<hep:CreatedDate>0</hep:CreatedDate>
<hep:SalesOrderType>Standard</hep:SalesOrderType>
</hep2:SalesOrderAuditInfo>
Here is the part that really matters. The Sample Request is the entire possible request body. The supplied request (with incorrect namespaces) is a subset of the sample request. I need to loop through each of the elements in the supplied request, and check to make sure the URL of that element matches the URL of the respective element in the sample request.
So in this example, loop through each element of supplied request. Start with SalesOrderAuditInfo. It's namespace URL is some-good-url-2. If we check the Sample Request, we can see that SalesOrderAuditInfo also corresponds to some-good-url-2.
Continue until we hit the ID tag. This has a namespace set to some-good-url-1. If we check the Same ID (inside of CreatedBy, inside of SalesOrderAuditInfo), we can see the namespace should actually be set to some-good-url-3. So we replace q106 with hep3.
I also need to take all of the namespaces defined in the Sample Request Envelope and move them into the supplied request envelope so that this new hep3 will be defined.
At this point, I need to edit the namespace prefix. In this example, q106:ID would be replaced be the string hep3:ID. Same with all of the closing tags.
Which library can I use to accomplish this in XML? Is anyone familiar with node-soap screwing these namespaces up and know of any fix?
I am using node-soap v0.43
What is the preferred way to validate requested DICOM connection against a list of known hosts?
I can connect to the EVT_CONN_OPEN event. But in that, the event.assoc.requestor.info.ae_title element is always empty (b'').
I see from a TCP network analysis, that the name is transmitted. So, where is it?
What is the right way to validate the requesting host?
You could try using EVT_REQUESTED instead, it gets triggered after an association request is received/sent and the AE title information should be available at that point. Unfortunately EVT_CONN_OPEN is triggered on TCP connection which occurs prior to the association request.
If you don't like the host's details you can use the handler to send an association rejection message using event.assoc.acse.send_reject() or abort with event.assoc.abort().
If you're only interested in validating against the AE title you can use the AE.require_calling_aet property to restrict associations to those with matching AE titles.
For the benefit of anyone else looking this up, the correct stage to look this up is in the EVT_REQUESTED event. However you will likely find the details aren't filled in (they are populated AFTER the handler has been called).
So if you want to locate the callers AE in EVT_REQUESTED, you need to locate the A_ASSOCIATE primitive and read them from there. So for example in your handler you can do this to reject remotes:
def handle_request(event):
req_title = event.assoc.requestor.primitive.calling_ae_title.decode('ascii')
if req_title != 'MyAET':
event.assoc.acse.send_reject(0x01, 0x01, 0x03)
return
At least for 1.5.7.
I have a route definition in function.json: entity/{paramName}
When I make a GET request: http://localhost:7071/api/entity/50043e-315
In context.bindingData.paramName I get surprising 5.0043e-311, while context.req.params.paramName contains 50043e-315.
I noticed that here both ways of reading can be used; and here the same is meant, though the links are dead by now, while the example here mentions only context.bindingData.
Question: What is more preferable? And what is the difference?
I believe the problem here is that the somewhere (if I were to make a guess, here) the param is being parsed as a double before being stored as binding data. But when fetching it from the request object, it is fetched as a string from the URL directly. Hence the difference.
I believe there are only a few cases where this might happen and this is one of them.
How can I check whether there is a specific parameter inside req.param() in sails.js?
For example, I want to check whether the parameter X_id exists in req.param(). If the parameter exists, then I want to use it. If it doesn't exist, then I want to use a default value instead. I've tried the following code:
X_owner: req.param('X_id') || -1,
But I receive an error when I run this code with out X_id parameter. How can I fix the code?
If you're aiming to use default values for your parameters, I'd suggest using actions2 if you haven't tried. It lets you define parameters (using the inputs' object) and use defaultsTo on inputs you want to have default values for, just like in your models attribute definitions. Using these should help resolve the issue.
As for how to check whether there is a specific parameter inside req.param(), you can use req.allParams() to reveal all current parameters from all sources. These include parameters parsed from the url path, the request body, and the query string in that order.
My code is like below:
server.get('/currency/:code', currency.find);
server.get('/currency/rates', currency.rate_getall);
Whenever I try to reach [/rates] endpoint, the server will assume I am passing parameter to '/currency/:code' route. How can I fix this? Thank you.
Ryan
If you can I would consider changing up your rest interface just a little.
server.get('/currency/:code', currency.find);
server.get('/currency/rates/:type', currency.rate);
That way it solves your initial problem and allows for flexibility in the future if you just want to return a rate for a particular currency.
Inside your currency.rate function you could check for either an id or the literal 'all' and return what is appropriate.