I need to change key in url when user retrieves the link:
http://server.eu/word.py
to , for example:
http://server.eu/word.py?word=yellow
Could it be done by cgi library?
Also, may be now by url, but somehow in other way: I just need to send random word generated in python to the client.
You should look at the Requests library, which is very pleasant to use. There are examples in the documentation on how to pass parameters:
http://www.python-requests.org/en/latest/user/quickstart/#passing-parameters-in-urls
In your case this would be something like:
payload = {'word': 'yellow'}
r = requests.get("http://server.eu/word.py", params=payload)
Related
I am writing DNS-over-HTTPS server which should resolve custom names, not just proxy them to some other DoH server, like Google's. I am having trouble properly decoding the body of the request.
For example, I get body of request, that is in binary format, specifically in javascript in Uint8 ArrayBuffer type. I am using the following code to get base64 format of the array:
function _arrayBufferToBase64(buffer) {
var binary = '';
var bytes = new Uint8Array(buffer);
var len = bytes.byteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode(bytes[i]);
}
return btoa(binary);
}
And I get something like this as a result:
AAABAAABAAAAAAABCmFwbngtbWF0Y2gGZG90b21pA2NvbQAAAQABAAApEAAAAAAAAE4ADABKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
Now, per RCF8484 standard this should be decoded as base64url, but when I decode it as such, I get the following:
apnx-matchdotomicom)N J
I also used this "tutorial" as the reference, but they also decode similarly formatted blob and I get similar nonsense like previously.
There is very little to no information about something like this on the internet and if it is of any help DoH standard uses application/dns-message media type for the body.
If anyone has some insight on what I am doing wrong or how I could edit the question to make it more clear, please help me, cheers :)
As stated in the RFC:
Definition of the "application/dns-message" Media Type
The data payload for the "application/dns-message" media type is a
single message of the DNS on-the-wire format defined in Section 4.2.1
of [RFC1035], which in turn refers to the full wire format defined in
Section 4.1 of that RFC.
So what you get is exactly what is sent on the wire in the normal DNS over 53 case.
I would recommend you use a DNS library that should have a from_wire or similar method to which you can feed this content and get back some structured data.
Showing an example in Python with the content you gave:
In [1]: import base64
In [3]: import dns.message
In [5]: payload = 'AAABAAABAAAAAAABCmFwbngtbWF0Y2gGZG90b21pA2NvbQAAAQABAAApEAAAAAAAAE4ADABKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA='
In [7]: raw = base64.b64decode(payload)
In [9]: msg = dns.message.from_wire(raw)
In [10]: print msg
id 0
opcode QUERY
rcode NOERROR
flags RD
edns 0
payload 4096
option Generic 12
;QUESTION
apnx-match.dotomi.com. IN A
;ANSWER
;AUTHORITY
;ADDITIONAL
So your message is a DNS query for the A record type on name apnx-match.dotomi.com.
Also about:
I am writing DNS-over-HTTPS server which should resolve custom names,
If you don't do that to learn (which is a fine goal), note that there are already various open source nameservers software that do DOH so you don't need to reinvent it. For example: https://blog.nlnetlabs.nl/dns-over-https-in-unbound/
I'm trying to create hash for calling thesubdb api they've given the python implementation of their hash generation method.
My project needs me to create hash on the go on browser and then pass it to my php backend and then call subdbapi using php.
But for that first of all I need to create hash of video file on my browser using javascript.
I'm using the new html 5 file api to read local file on users computer and create hash for same.
var md5 = CryptoJS.MD5(binary).toString();
console.log(md5);
above is my javascript code.
This does not match the output of the python code that they've given which is :
def get_hash(name):
readsize = 64 * 1024
with open(name, 'rb') as f:
size = os.path.getsize(name)
data = f.read(readsize)
f.seek(-readsize, os.SEEK_END)
data += f.read(readsize)
return hashlib.md5(data).hexdigest()
i'm sure i'm missing something fundamental in my javascript code.
thanks in advance.
I'm looking for json parser that can be used inside httpd.conf file in combination with url rewrite:
Here is the json file for the example:
{
"employees": [
{ "emp1":"Andy" },
{ "emp2":"David" },
]
}
For example i got this url (http://someurl.com/employees/emp1/)
employees is rewrite by the apache server to employees.json
So far so good if i just want the file, But lets say i want specific item as the url(http://someurl.com/employees/emp1/) show i want emp1:
The first thing i was looking is a way to fetch the item directly from the url for example to rewrite:
http://someurl.com/employees/emp1/
To:
http://someurl.com/employees.json:emp1/ // Just an example for a possibility that there is a syntax to fetch single item directly from the url
Another thing to consider is the use of PHP/JS to process the URL than parse and return the item (emp1 value).
So the last thing i was thinking is the use of JSON parser that can work inside the apache configuration file(httpd.conf) in combination with url rewrite process.
I'd love to hear what is the best solution, Thank you all and have a nice day.
I've been working with Django for a few months now so I'm still new at it.
I want to get the last GET parameter from the URL. Here is and example of the URL:
example.com?q=Something&filter1=Test&filter1=New&filter2=Web&filter3=Mine
Is there a way to get the last inserted GET parameter with django? It could be filter1, filter2 or filter3..
Maybe there is a way to do this after the initial refresh with javascript/jQuery?
Thanks!
You can try to parse url parameters yourself. For example:
Python/Django
from urlparse import urlparse, parse_qsl
full_url = ''.join([request.path, '?', request.META['QUERY_STRING']])
#example.com?q=Something&filter1=Test&filter1=New&filter2=Web&filter3=Mine
parameters = parse_qsl(urlparse(full_url)[4])
#[(u'q', u'Something'), (u'filter1', u'Test'), (u'filter1', u'New'), (u'filter2', u'Web'), (u'filter3', u'Mine')]
last_parameter = parameters[-1]
#(u'filter3', u'Mine')
Javascript
var params = window.location.search.split("&");
//["?q=Something", "filter1=Test", "filter1=New", "filter2=Web", "filter3=Mine"]
var last_param = params[params.length-1].replace("?","").split("=");
//["filter3", "Mine"]
This example do not use jQuery and provides basic knowledge of url parsing. There are a lot of libraries, that can do it for you.
I'm trying to implement a REST interface under IIS5.1/ASP-classic (XP-Pro development box). So far, I cannot find the incantation required to retrieve request content variables under the PUT HTTP method.
With a request like:
PUT http://localhost/rest/default.asp?/record/1336
Department=Sales&Name=Jonathan%20Doe%203548
how do I read Department and Name values into my ASP code?
Request.Form appears to only support POST requests. Request.ServerVariables only gets me to header information. Request.QueryString doesn't get me to the content either...
Based on the replies from AnthonyWJones and ars I went down the BinaryRead path and came up with the first attempt below:
var byteCount = Request.TotalBytes;
var binContent = Request.BinaryRead(byteCount);
var myBinary = '';
var rst = Server.CreateObject('ADODB.Recordset');
rst.Fields.Append('myBinary', 201, byteCount);
rst.Open();
rst.AddNew();
rst('myBinary').AppendChunk(binContent);
rst.update();
var binaryString = rst('myBinary');
var contentString = binaryString.Value;
var parameters = {};
var pairs = HtmlDecode(contentString).split(/&/);
for(var pair in pairs) {
var param = pairs[pair].split(/=/);
parameters[param[0]] = decodeURI(param[1]);
}
This blog post by David Wang, and an HtmlDecode() function taken from Andy Oakley at blogs.msdn.com, also helped a lot.
Doing this splitting and escaping by hand, I'm sure there are a 1001 bugs in here but at least I'm moving again. Thanks.
Unfortunately ASP predates the REST concept by quite some years.
If you are going RESTFull then I would consider not using url encoded form data. Use XML instead. You will be able to accept an XML entity body with:-
Dim xml : Set xml = CreateObject("MSXML2.DOMDocument.3.0")
xml.async = false
xml.Load Request
Otherwise you will need to use BinaryRead on the Request object and then laboriously convert the byte array to text then parse the url encoding yourself along with decoding the escape sequences.
Try using the BinaryRead method in the Request object:
http://www.w3schools.com/ASP/met_binaryread.asp
Other options are to write an ASP server component or ISAPI filter:
http://www.codeproject.com/KB/asp/cookie.aspx