Is it possible to remove headers in vcl_deliver whose name matches a certain regular expression?
We throw headers called "X-env-blah" where "blah" could contain any value, and want them to be removed from the front-end.
Example (doesn't work):
unset resp.http.x-env$;
Or is there a way to loop through all the headers in vcl_deliver?
Thanks
VCL is a simple language that is converted into machine code when loaded.
There are no loops nor any globbing.
To do this you will either have to write a VMOD/inline-C, or just unset all possible headers each time.
Yes, but you need to install the vmod header. See: livmod-herader page at github.
Related
I am making a pizza delivery chatbot and one of the training samples is
Are you open right now?
PARAMETER NAME ENTITY RESOLVED VALUE
time #sys.time now
One of the responses I want to have is if the time is between 12 am and 6 am , the reponse I coded is :
{{#if $time> 12:00:00}}I think it is too late{/if}}
But the response i am getting is :
{#if 12:00:34> 12:10:00}I think it is too late{/if}, which is wrong. Can someone help me on how to resolve this.
TIA
The Response section has a very very simple templating system - it allows for parameter/value replacement, and that is about it.
So you can specify a parameter value from an input phrase using something like $parameter-name, while parameter values in a Context or Event would be #context-name.parmaeter-name. You don't need the {braces} to do the evaluation, since those are used to escape the $ and # as special characters. So if you needed to show "$100", you would write that as ${100}. If you need the braces to be displayed, you'd include those inside another set of braces, which is why your text seems to get the braces removed.
You will need to put this processing in your fulfillment code. Libraries such as multivocal will let you create responses and setup response logic using templates. (Multivocal uses the handlebars templating library, for example.)
I am trying to redirect a path e.g. www.something.com/apple/pie to www.something.com/tickets/pie-details
This is what I have tried but doesn't work:
if (req.url ~ "^/apple/.*") {
set req.url = "^/tickets/.*-details";
error 701 req.url;
}
Am I missing something?
You either need to capture the matches from the regex, or if it is simple just replace using regsub()
However I have read that these are no longer bundled in core varnish so you might need a vmod. This one appears to be the one you need: https://gitlab.com/uplex/varnish/libvmod-re
Here are some docs on how this can be used: https://docs.fastly.com/en/guides/vcl-regular-expression-cheat-sheet#capturing-matches
Basically the re object lets you use the matched portion to then assemble the new url using string operations.
All of the above is speculative using my knowledge of vcl and regex, but I personally have not tried it.
i have a file with below data
this is a text file with html format $testarray['G']
i use this script but it is not work properly.
<?php $testarray=array();
$testarray['G']=100;
$result222 =file_get_contents(realpath('file.php'));
printf($result222);?>
i want this script, print out below line
this is a text file with html format 100
i do't want to use include or require function because user can insert php code in this file and i do't want user can use php codes in this file
can anybody help me?
many thanks
If you know the string you expect to perform a substitution on, you can always do it manually with str_replace(). However, it looks like you want to be able to substitute arbitrary variables into the string, which I implore you to not do. You are giving this PHP script way too much power as is. I can think of a few exploits off the top of my head, such as injecting superglobals among simply brute forcing variable names.
Edit: I realize now that I also didn't give you the straightforward answer which does as you request: the eval() function. You should be able to craft a string that assigns the contents of the file to a variable, which should perform variable substitutions by the PHP parser. Please don't use it, but if you do be very careful.
i used below script
$result222 =file_get_contents(realpath('file.php'));
$result222=str_replace(array("<?","?>")," ",$result222);
print eval("return<<<ENDEVAL\n$result222\nENDEVAL;\n");
I am using a simple looping plugin so that my template looks like this:
{exp:loop_plus start="1" end="4" increment="1"}
<h3>{slide_{index}_title}</h3>
{/exp:loop_plus}
However, I am ending up with the following output:
<h3>{slide_1_title}</h3>
<h3>{slide_2_title}</h3>
<h3>{slide_3_title}</h3>
<h3>{slide_4_title}</h3>
Is there any way I can have dynamic variable names like this? I am not looking for alternative methods for building a slider, I simply would like to know if the dynamic variable names like this is possible. Thanks!
I'm assuming that Loop Plus (http://devot-ee.com/add-ons/loop-plus) sets the {index} part, so the question is what is defining {slide_1_title}...?
Assuming you have an entry field or variable with this defined, what you have is correct, but if it's not working, it means there's a parsing order issue.
Let's assume the code you supplied is wrapped in a {exp:channel:entries} tag pair, what happens is EE will try to parse the variable first, so will see: {slide_{index}_title} which doesn't exist. The {exp:loop_plus} add-on will then parse it, converting it to {slide_1_title} (but to late as channel:entries has already tried to parse it), which is what is finally output to the template.
So what you want to ensure is that EE parses {exp:loop_plus} before {exp:channel:entries}, do this using parse="inward" tag:
{exp:loop_plus start="1" end="4" increment="1" parse="inward"}
<h3>{slide_{index}_title}</h3>
{/exp:loop_plus}
This is a global EE parameter that EE uses to control parse order - you won't find it documented under the specific add-on. By adding the parameter, it means this child tag will get parsed before it's parent.
One way you could do it is to declare a preload_replace variable in your template and use it in your custom field name.
So something like:
{preload_replace:my_var_prefix="whatever"}
And then in your loop, you could then use:
{slide_{my_var_prefix}_title}
JSON is not a subset of JavaScript. I need my output to be 100% valid JavaScript; it will be evaluated as such -- i.e., JSON.stringify will not (always) work for my needs.
Is there a JavaScript stringifier for Node?
As a bonus, it would be nice if it could stringify objects.
You can use JSON.stringify and afterwards replace the remaining U+2028 and U+2029 characters. As the article linked states, the characters can only occur in the strings, so we can safely replace them by their escaped versions without worrying about replacing characters where we should not be replacing them:
JSON.stringify('ro\u2028cks').replace(/\u2028/g,'\\u2028').replace(/\u2029/g,'\\u2029')
From the last paragraph in the article you linked:
The solution
Luckily, the solution is simple: If we look at the JSON specification we see that the only place where a U+2028 or U+2029 can occur is in a string. Therefore we can simply replace every U+2028 with \u2028 (the escape sequence) and U+2029 with \u2029 whenever we need to send out some JSONP.
It’s already been fixed in Rack::JSONP and I encourage all frameworks or libraries that send out JSONP to do the same. It’s a one-line patch in most languages and the result is still 100% valid JSON.