JA3-Fingerprint-Introduction | Introduction to JA3 Fingerprint and how to impersonate | Validation library
kandi X-RAY | JA3-Fingerprint-Introduction Summary
kandi X-RAY | JA3-Fingerprint-Introduction Summary
JA3 is a fingerprinting mechanism used to uniquely identify clients based on their TLS clientHello packets. So whenever you access a website/service which uses https, your browser/client has to complete a TLS Handshake, this is a multistep process when the client and the server authenticate each other and negotiates security keys to be used for further data transmission. JA3 mechanism uses the client Hello packet to create a fingerprint which can be used to identify the operating system and the client from which the request was made. This comes in handy to identify various commonly used malwares and avoid traffic from them to protect your website. Head over to You can find the hash created from the request sent by your browser, and click on search for ja3 hash to find your client and operating system. This is mine. The site also provides a rest api to find your ja3 fingerprint and infromation about your client and operating system. Lets hit their API via curl see what the output is. curl -X GET 'This endpoint gives the ja3 and the ja3_hash (fingerprint). Get the ja3_hash from the previous response and search for it. curl -X GET 'Don't confuse this with the User-Agent which is sent in the request headers. A client can send anything as it is under the control on the client. Even if one sends a different User-Agent the source of the request can be found using the JA3 fingerprint. Have you ever tried to access google using tor browser and been blocked by a screen which says their systems have found unusual traffic, It it done by a mix of fingerprint filtering and by matching IP with list of public tor exit relays. Similar methods are used by few govt sites also. There are also other fingerprinting techniques other than ja3 and it is not public which fingerprinting method is used by Google. They might even have a proprietary technique ️.
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- Checks for a JWT fingerprint
JA3-Fingerprint-Introduction Key Features
JA3-Fingerprint-Introduction Examples and Code Snippets
Community Discussions
Trending Discussions on Validation
QUESTION
I am trying to validate a string the way it is done in Jira in Javascript. I'm trying to replicate how it is validated in Jira. I am guessing I could do this with Regex but I am not sure how.
A user can type a string in the format of "1d 6h 30m" which would mean 1 day, 6 hours, 30 minutes. I do not need the weeks for my use case. I want to show an error if the user uses an invalid character (anything except 'd','h','m', or ' '). Also the string must separate the time durations by spaces and ideally I would like to force the user to enter the time durations in descending order meaning '6h 1d' would be invalid because the days should come first. Also the user does not have to enter all information so '30m' would be valid.
This is my code for getting the days, hours and minutes which seems to work. I just need help with the validation part.
...ANSWER
Answered 2022-Apr-14 at 16:30Based on your comment, I have added a validation regex to be run first before running the match regex.
For validation, you want
QUESTION
I'd like to skip validation for empty arrays in a json file for a specific field. Below you can see Book structs definition, which could be validated if no authors are declared in json file. On the other hand it fails if an empty array is defined for authors. Is it possible to achieve this behavior with existing tags, or do I have to define custom validator?
...ANSWER
Answered 2022-Feb-26 at 20:02It's because your Authors validation string is "omitempty,min=1,dive,min=3"
. The length of an empty slice is 0, which is <1.
If you replace the validation string with "omitempty,min=0,dive,min=3"
instead, it'll pass.
QUESTION
I've been working with rails for a while, but I thought I'd try a course to cement my knowledge.
But I already get stumped on a basic save/error action.
I am trying to show error messages after model validation fails.
If the model validation fails, I render 'new'
again, where the model instance should have error messages. But if I try to print the error messages like <%= modelinstance.errors.inspect %>
it just shows an empty array.
The weird thing is, if I instead do render :new, status: :unprocessable_entity
it gladly renders the whole error thing.
I was just wondering why this is the case, when the ruby on rails guide is allowing the string version.
Controller:
...ANSWER
Answered 2022-Feb-22 at 12:33It's due to the introduction of Turbo in Rails 7. Without that status, Turbo wouldn't really know what to do with the redirects.
You can read more about it here: https://turbo.hotwired.dev/handbook/drive#redirecting-after-a-form-submission
Otherwise, you could just disable Turbo and it should go back to "normal".
QUESTION
I'm developing an API with Spring Boot and currently, I'm thinking about how to handle error messages in an easily internationalizable way. My goals are as follows:
- Define error messages in resource files/bundles
- Connect constraint annotation with error messages (e.g.,
@Length
) in a declarative fashion - Error messages contain placeholders, such as
{min}
, that are replaced by the corresponding value from the annotation, if available, e.g.,@Length(min = 5, message = msg)
would result in something likemsg.replace("{min}", annotation.min()).replace("{max}", annotation.max())
. - The JSON property path is also available as a placeholder and automatically inserted into the error message when a validation error occurs.
- A solution outside of an error handler is preferred, i.e., when the exceptions arrive in the error handler, they already contain the desired error messages.
- Error messages from a resource bundle are automatically registered as constants in Java.
Currently, I customized the methodArgumentNotValidHandler
of my error handler class to read ObjectError
s from e.getBindingResult().getAllErrors()
and then try to extract their arguments and error codes to decide which error message to choose from my resource bundle and format it accordingly. A rough sketch of my code looks as follows:
Input:
...ANSWER
Answered 2022-Feb-03 at 10:12If I understood your question correctly....
Below is example of exception handling in better way
Microsoft Graph API - ERROR response - Example :
QUESTION
we are currently trying to implement a non-critical validation layer that checks field inputs against certain validators without marking the form as "not valid", but rather as "out of specification" so that we can highlight the fields to the user. In particular we are talking about number ranges with lower and upper boundaries that should highlight the input fields as some sort of "out of specification" warning. The input itself is considered valid but "out of specifaction" while the user should still be able to save the data.
Here's an example:
- allowed input of any integer (validation), with an input specification of integers between 90 and 100 (specification).
- input "abc" -> wrong input type -> error message, saving not allowed
- input "95.1234" -> wrong input type -> error message, saving not allowed
- input "85" -> correct input type, valid input, but out of specification -> warning message, saving still allowed
- input "95" -> correct input type, valid input, in specification -> saving allowed
This means the normal binder validation should still block the saving while the additional non-critical validation should just highlight it, but not block it.
We are currently using the vaadin binder in vaadin version 14 and are using the features of converters and validators. Is there a possibility to add our layer to the vaadin binder so that it performs fluently with our current usage? Or do we have to build our own non-critical validation layer additionally to the normal vaadin binder usage? In an ideal world we would pin it after conversion and validation phase:
- field input
- type conversion
- critical validation
- non-critical validation
- input saving
I hope my description is sufficient. If there are any questions, just let me know and I try to describe it a little bit more detailed. Thanks in advance.
...ANSWER
Answered 2022-Jan-17 at 15:37That's possible with errors that are not of type ErrorLevel.ERROR with a custom BinderValidationErrorHandler available since flow 14.7.
See the PR that introduced it with an example https://github.com/vaadin/flow/pull/11384#issuecomment-879309037
QUESTION
The below returns success, even though obj
contains an element that is not in the schema.
Question
Is it possible to have validate fail, when it sees elements that are not specified in the schema?
Jest have this expect(obj1).toEqual(obj2)
.
If Validate can't do it, what options do I then have to detect unwanted elements?
...ANSWER
Answered 2022-Jan-14 at 16:11Yes, there is a strict
option on the Schema
, from the documentation:
SchemaA Schema defines the structure that objects should be validated against.
Parameters
obj
schema definitionopts
options
opts.typecast
opts.strip
opts.strict
Validation fails when object contains properties not defined in the schema (optional, default false)
So you'll need something like:
QUESTION
I have something like:
...ANSWER
Answered 2022-Jan-07 at 15:21You can use the Joi.array method and pass it only one key you would like the object to have
QUESTION
I've implemented a custom validation message on my input for the pattern
validation rule while leaving the default message for required
as is. However, when I do so, once the input becomes invalid, it never becomes valid again, even though I am meeting the pattern
criteria.
ANSWER
Answered 2022-Jan-03 at 16:18First of all, per MDN:
It's vital to set the message to an empty string if there are no errors. As long as the error message is not empty, the form will not pass validation and will not be submitted.
This agrees with that the HTML standard says:
Suffering from a custom error
When a control's custom validity error message (as set by the element's
setCustomValidity()
method orElementInternals
'ssetValidity()
method) is not the empty string.An element satisfies its constraints if it is not suffering from any of the above validity states.
Your sample does not clear the custom error if the form field is determined to be valid. As such, once the field is determined invalid, it stays so for the remainder of the session.
Moreover, you modify custom error only after the field has already been determined invalid. This means the form will still not be submitted even if you clear the message in the same handler.
A better way too accomplish your goal would be to monitor the field in the change
event handler for the field and set the custom message there:
QUESTION
I'm using Go 1.17 with Gin and I want to implement a struct validation before sending the data to my database. I took the example from Gin documentation.
In the struct we can declare different tags to validate a field like this:
...ANSWER
Answered 2021-Nov-22 at 21:05Gin gonic uses the package github.com/go-playground/validator/v10
to perform binding validation. If the validation fails, the error returned is a validator.ValidationErrors
.
This is not mentioned explicitly but here in Model binding and validation it states:
Gin uses go-playground/validator/v10 for validation. Check the full docs on tags usage here.
That links to the go-playground/validator/v10
documentation, where you find the paragraph Validation Functions Return Type error.
You can use the standard errors
package to check if the error is that, unwrap it, and access the single fields, which are validator.FieldError
. From that, you can construct whatever error message you want.
Given an error model like this:
QUESTION
I am trying to disable the form submit button until the validation is fully passed.
I have come across the threads regarding this topic.
This thread helps to trigger validation without display of UI errors: https://github.com/ant-design/ant-design/issues/25993
The below code works within the hoc of my footer button wrapper, but it is verifying for all fields to be touched and even applicable for non-required fields, which is not right and expected.
...ANSWER
Answered 2021-Oct-06 at 16:24It looks like there is a bunch of bugs in existing Antd library for this validation and this is not supported unless they officially announce with a release. There are open tickets and none have addressed.
I believe ill not find a solution for this question for now.
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