(Linux) How can i grep this? (XML format) - grep

<host city="Santa Rosa" country="USA" hostnames="50-0-143-139.dsl.static.sonic.net" ip="50.0.143.139" latitude="38.3928" longitude="-122.7507" port="80" updated="30.01.2015"><data>HTTP/1.0 200 OK
Date: Fri, 30 Jan 2015 00:15:54 GMT
Server: Apache/2.2.22 (Ubuntu)
X-Powered-By: PHP/5.3.10-1ubuntu3.9
Set-Cookie: PHPSESSID=5vbu0vva1rvdaqvkk12kk2gjc4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: _pmxi_session=%7C%7C%7C%7C; path=/
X-Pingback: http://www.rasputinmusic.com/xmlrpc.php
Link: <http://wp.me/18fQM>; rel=shortlink
Vary: Accept-Encoding
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8
Basically all I want is the value inside X-Pingback, in this case "http://www.rasputinmusic.com/xmlrpc.php"
How can i do this?

I don't think grep is the best way; I recommend using awk. If your data is in text.xml, try:
awk '/X-Pingback: /{print $NF}' text.xml
This searches for lines that begin with "X-Pingback: " and then prints the last field of those lines. The results may be redirected to a file using the redirection metacharacter >. For example:
awk '/X-Pingback: /{print $NF}' text.xml > filtered.txt

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How to verify HSTS is working as expected in Rails application?

Most of the documentation talks about adding config.force_ssl = true which provides HSTS to Rails application. Well, how can I make sure its working as expected? How can I test HSTS header is added for every request? Any help is much appreciated.
Use curl -I https://your_website.domain or browser developer tools to view response headers. You're interested in the Strict-Transport-Security header:
curl -I https://www.ssllabs.com/
HTTP/2 200
date: Fri, 23 Apr 2021 15:25:17 GMT
server: Apache
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
strict-transport-security: max-age=31536000 <-- this one
cache-control: no-cache, no-store, max-age=0, must-revalidate
pragma: no-cache
expires: 0
x-frame-options: DENY
content-type: text/html;charset=ISO-8859-1
content-language: en-US
content-length: 6587
set-cookie: ...
content-security-policy: ...

Nginx X-Frame-Options

i use nginx 1.8.0 under centOS 6.7 which serving Ruby On Rails 4.2.3 application.
The Problem:
I need to enable iframe options for all domains so tried this:
X-Frame-Options: *
then when i check headers i see it twice 1 time with SAMEORIGIN and one time with *, here is the response:
HTTP/1.1 200 OK
Server: nginx/1.8.0
Date: Sun, 01 Nov 2015 15:48:32 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Status: 200 OK
Strict-Transport-Security: max-age=31536000
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
ETag: W/"d14b3de05fb18ebe4a94774c8f209e7f"
Cache-Control: max-age=0, private, must-revalidate
Set-Cookie: guess_locale=en; path=/; secure
Set-Cookie: _admin_numgames_com_session=Y3N0QjR2NXY0VFlZMlVnMHJLZC9WbUVraldZYjhpeHo0UG41akpaZE1rb0tQWS9YeGpkcklTRmViUU5aVmJpUElCcWpMaFJWQmpIWHRSazI4TE9QdTgvQ2VVRGYrSW9VcjA4eWVCMVlsUHJRejR1WmNoQWZoL2hGeVA1ZHp5YWxPdFZ4S25ydEtTamVnbFlZMEhJRDdXalQ2MU93T24vWnR6b28wM0NvYS82Nm1XMGV2Njh4djIzR1RNb2w3WTVHUDM3cVl3NnVrQnJ1WTMyU3I4dVBjY3RORWRQSlk2VmhNVnRVelZRbHRVWT0tLU9DYVBIZUxoUXlLN2VmZ01VNEhab3c9PQ%3D%3D--fa2a9d6817b5464b82a2babd784ed098f2526eeb; path=/; secure; HttpOnly
X-Request-Id: 4762503a-a9a8-41ce-b1a7-26269b7e9184
X-Runtime: 0.963198
X-Frame-Options: *
there is only 1 time declare this option so why i see it twice? and how do i remove this option so any one will be able to use my domain with iFrame?
OK so i found the solution and Rails was the problem he sent the header, just needed to add into production.rb file:
config.action_dispatch.default_headers = {
'X-Frame-Options' => 'ALLOWALL'
}

Remove Http header response

I am working on a project which requires a client to make an api call to
my
rails application and it to return XML without any http header info.
its currently returning:
HTTP/1.1 200 OK
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: Fri, 01 Jan 1990 00:00:00 GMT
Content-Type: application/xml; charset=
X-Ua-Compatible: IE=Edge
X-Request-Id: c5602cd7eb23ca8137bef8bb1f0a4f8a
X-Runtime: 0.027900
Server: WEBrick/1.3.1 (Ruby/1.9.3/2013-11-22)
Date: Wed, 18 Jun 2014 05:27:48 GMT
Content-Length: 529
Connection: Keep-Alive
Set-Cookie: _session_id=a8039d615674feec206e6c55a7a7afc8; path=/;
HttpOnly
<?xml version="1.0" encoding="UTF-8"?>
<cXML>
<Response>
<Status code="200" text="OK"/>
<StartPage>
<URL>http://localhost:3000/foobar/BAh7DDoNYmFza2V0aWRJI...
</StartPage>
</Response>
</cXML>
Can anyone help to remove all the http headers within the controller or any
config? which is below section.
HTTP/1.1 200 OK
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: Fri, 01 Jan 1990 00:00:00 GMT
Content-Type: application/xml; charset=
X-Ua-Compatible: IE=Edge
X-Request-Id: c5602cd7eb23ca8137bef8bb1f0a4f8a
X-Runtime: 0.027900
Server: WEBrick/1.3.1 (Ruby/1.9.3/2013-11-22)
Date: Wed, 18 Jun 2014 05:27:48 GMT
Content-Length: 529
Connection: Keep-Alive
Set-Cookie: _session_id=a8039d615674feec206e6c55a7a7afc8; path=/;
HttpOnly
I am using nginx at the moment.
I have some says that this is kind of a nonsense request, since HTTP servers by
definition uses header to talk to one another. But I have also been informed that W3 think otherwise.
http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4
I have also googled around for hours attempting other solutions changing my rails controller without any success. Is the last resort possibly changing config in Nginx and wouldn't that effect the whole rails application and not just the api calls or is there a way to single out one call?
Thanks in advance.
T
This is a nonsense request, yeah. You can use the HttpHeadersMore module to remove most of the response headers. Something like this should do it:
location /your/api/path {
more_clear_headers '*';
}
However, you can't remove the Connections header without patching nginx. And even if you could, you can't remove the first line of the response ("HTTP/1.1 200 OK", in this case). Without that line, it isn't an HTTP response. You're going to have a hard time convincing an HTTP server to send non-HTTP responses.
To get what you're describing, I think you'll need a custom server that communicates over bare TCP sockets. This tutorial might help you out. Or maybe you could implement that part of your app in node.js (or another tool)?

Twitter oauth/request_token API using Fiddler results in 401 error

I am trying to use fiddler to test the oauth/request_token api but am getting a 'Failed to validate oauth signature and token' 401 error. I copied the authorization header values directly from my application and added an oauth_callback header. I am trying to follow the example in the following documentation:
https://dev.twitter.com/docs/api/1/post/oauth/request_token.
Any help would be greatly appreciated.
REQUEST:
POST https://api.twitter.com/oauth/request_token HTTP/1.1
Authorization: OAuth oauth_callback="http%3A%2F%2Flocalhost%3A61921%2Ftwitter%2Fprocesscallback", oauth_consumer_key="XXXXXXXXXXXXXXXXXXXXX", oauth_nonce="53891723ad7b32501c669d97f56c6d47", oauth_signature="qzN516EVspIA0NWBbpND83YcTr4%3D",
oauth_signature_method="HMAC-SHA1",
oauth_timestamp="1402955245",
oauth_token="2514015781-KqTbOPPag7p0CYQ6xByIibV3WEk8xLsWrhb9U4M",
oauth_version="1.0"
Host: api.twitter.com
Content-Length: 0
RESPONSE:
HTTP/1.1 401 Unauthorized
cache-control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0
content-length: 44
content-type: text/html; charset=utf-8
date: Mon, 16 Jun 2014 21:54:56 GMT
expires: Tue, 31 Mar 1981 05:00:00 GMT
last-modified: Mon, 16 Jun 2014 21:54:56 GMT
pragma: no-cache
server: tfe
set-cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCEIJraZGAToHaWQiJTlmOTQ3Y2MyYWNlMTkx%250AYTMyYzVlZmYyMTA4ZjU4ZTdkIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--3afebfe1105e8a7315baba72651e76a24f53e6d2; domain=.twitter.com; path=/; secure; HttpOnly
set-cookie: guest_id=v1%3A140295569643962216; Domain=.twitter.com; Path=/; Expires=Wed, 15-Jun-2016 21:54:56 UTC
status: 401 Unauthorized
strict-transport-security: max-age=631138519
vary: Accept-Encoding
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-mid: d31abfd0b6cbb0aa6434a6ffc6efdfac089ab0a5
x-runtime: 0.01273
x-transaction: 2dd94ca53f553801
x-ua-compatible: IE=edge,chrome=1
x-xss-protection: 1; mode=block
Failed to validate oauth signature and token

Twitter API Get mentions

Im having loads of issues with the Twitter API and GET. Hopefully someone can point out my mistake of help me in the correct direction. I got the POST correct for posting statusses, but i want to get the users mentions, but Im receiving "Could not authenticate with OAuth" the whole time.
Below are all my strings and headers as I set / get it. Please help. :)
- Generate Base URL -
base=GET&http%3A%2F%2Fapi.twitter.com%2F1%2Fstatuses%2Fmentions.xml&oauth_consumer_key%3D0RaXE4T4CuMFJHI1jViEQ%26oauth_nonce%3DDGTQVDPXRAYASJJFJLJF%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1309954505%26oauth_token%3D298006718-8yTikfcuvQ3Xq1ZGuykhkxK2wY0ZAOxcI0jesRxd%26oauth_version%3D1.0
----------------------------------
- Build Signature -
SignKey=ey75K0x7bgyI4BwwG5mn7vLVNQiyphJo9MMT8t6bj0&Syk7tpizLGSo2xvJ9Q8Y1G318eKO8QXvPGWoOpdXWw
Signature=Q844NOw7T0oq8tNQkdR/6ez6Z8s=
----------------------------------
- Request twit Start -
postvars=
url=http://api.twitter.com/1/statuses/mentions.xml
----------------------------------
- Socket Before Header Send -
GET /1/statuses/mentions.xml HTTP/1.0
Accept: */*
Referer: http://eden.fm
User-Agent: Mozilla/4.0 (compatible; ICS)
Host: api.twitter.com
Authorization: OAuth oauth_nonce="DGTQVDPXRAYASJJFJLJF", oauth_callback="oob", oauth_token="298006718-8yTikfcuvQ3Xq1ZGuykhkxK2wY0ZAOxcI0jesRxd", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1309954505", oauth_consumer_key="0RaXE4T4CuMFJHI1jViEQ", oauth_signature="Q844NOw7T0oq8tNQkdR%2F6ez6Z8s%3D", oauth_version="1.0"
----------------------------------
- Socket Header End -
HTTP/1.1 401 Unauthorized
Date: Wed, 06 Jul 2011 12:16:11 GMT
Server: hi
Status: 401 Unauthorized
WWW-Authenticate: OAuth realm="http://api.twitter.com"
X-Runtime: 0.00899
Content-Type: application/xml; charset=utf-8
Content-Length: 152
Cache-Control: no-cache, max-age=1800
Set-Cookie: k=41.133.180.120.1309954571265496; path=/; expires=Wed, 13-Jul-11 12:16:11 GMT; domain=.twitter.com
Set-Cookie: guest_id=v1%3A130995457172572573; domain=.twitter.com; path=/; expires=Sat, 06 Jul 2013 00:16:11 GMT
Set-Cookie: original_referer=ojItV1ByhTzWh74Jc1NQEw%3D%3D; path=/
Set-Cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCNR9YP8wAToHaWQiJTQzZGVmMTE3YTI5ZjEz%250AOGYzZWEwYjlmNTRlM2I3MzA2IgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--dd24ddb28d1207c2ebf479e57b6f9edb82553bbe; domain=.twitter.com; path=/; HttpOnly
Expires: Wed, 06 Jul 2011 12:46:11 GMT
Vary: Accept-Encoding
Connection: close
----------------------------------
- Request Done Socket DocEnd -
result=
status code=401
headers=HTTP/1.1 401 Unauthorized
Date: Wed, 06 Jul 2011 12:16:11 GMT
Server: hi
Status: 401 Unauthorized
WWW-Authenticate: OAuth realm="http://api.twitter.com"
X-Runtime: 0.00899
Content-Type: application/xml; charset=utf-8
Content-Length: 152
Cache-Control: no-cache, max-age=1800
Set-Cookie: k=41.133.180.120.1309954571265496; path=/; expires=Wed, 13-Jul-11 12:16:11 GMT; domain=.twitter.com
Set-Cookie: guest_id=v1%3A130995457172572573; domain=.twitter.com; path=/; expires=Sat, 06 Jul 2013 00:16:11 GMT
Set-Cookie: original_referer=ojItV1ByhTzWh74Jc1NQEw%3D%3D; path=/
Set-Cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCNR9YP8wAToHaWQiJTQzZGVmMTE3YTI5ZjEz%250AOGYzZWEwYjlmNTRlM2I3MzA2IgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--dd24ddb28d1207c2ebf479e57b6f9edb82553bbe; domain=.twitter.com; path=/; HttpOnly
Expires: Wed, 06 Jul 2011 12:46:11 GMT
Vary: Accept-Encoding
Connection: close
----------------------------------
result=<?xml version="1.0" encoding="UTF-8"?>
<hash>
<error>Could not authenticate with OAuth.</error>
<request>/1/statuses/mentions.xml</request>
</hash>
Why not take a look at my open source TTwitter library? Even though this version of the project is now depreciated (I've rolled TTwitter into a larger project to develop more social networking components) it'll still point you in the right direction :)

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