How add exception in IIS url rewrite (ASP NET Core)? - asp.net-core

I have rule:
<rule name="main" stopProcessing="true">
<match url="main/([^.]*)/$" />
<action type="Redirect" url="/main/" appendQueryString="false" redirectType="Permanent" />
</rule>
References /main/xxxx/ go to /main/, but I need make rule with one reference (/main/docs/) whitch doesn`t have redirect.
Help me please make exception in rule

References /main/xxxx/ go to /main/, but I need make rule with one reference (/main/docs/) whitch doesn`t have redirect.
To achieve the requirement, you can try to add a condition to the rule, like below.
<rule name="main" stopProcessing="true">
<match url="main/([^.]*)/$" />
<conditions>
<add input="{REQUEST_URI}" pattern="main/doc/" negate="true" />
</conditions>
<action type="Redirect" url="/main/" appendQueryString="false" redirectType="Permanent" />
</rule>

Related

How create condition for url rewrite?

I have similar urls. But I don`t know how write one rule for my situation.
<rule name="stage">
<match url="stage.some.com/test/docs/overview.htm" />
<action type="Redirect" url="https://stage-docs.some.com/" appendQueryString="false" redirectType="Permanent" />
</rule>
<rule name="prod">
<match url="some.com/test/docs/overview.htm" />
<action type="Redirect" url="https://docs.some.com/" appendQueryString="false" redirectType="Permanent" />
</rule>
First rule has in domain stage.
Any help would be greatly appreciated.

URL Rewriting in IIS with Express

I want to rewrite all images to a different folder. I'm using IIS and have configured a rule in the web.config to redirect all requests to a node.js file as follows:
<rewrite>
<rules>
<rule name="img">
<match url="\/(.*).img" />
<action type="Rewrite" url="/handlers/img.js" />
</rule>
</rules>
</rewrite>
All requests are now being sent to the img.js file, where based on a condition, I want to redirect to another image file. But IIS now sends that file to the img.js and it ends up as a loop. Is there any way out of this loop?
You could try the below thing to resolve the issue:
set the condition to do not match the pattern:
<conditions>
<add input="{REQUEST_URI}" pattern="\/(.*).img.js" negate="true" />
</conditions>
or set <rule name="img" stopProcessing="true">
<rule name="img" stopProcessing="true">
<match url="\/(.*).img" />
<conditions>
<add input="{REQUEST_URI}" pattern="\/(.*).img.js" negate="true" />
</conditions>
<serverVariables />
<action type="Rewrite" url="/handlers/img.js" logRewrittenUrl="true" />
</rule>

Replace specific query string value with IIS redirect maps

I'm trying to create a redirect rule for a .NET Core project that would replace a query string value so to help deploy a migration on some identifiers. For example the URL:
http://www.somesite.com/page.html?somevar=abc&id=1234&othervar=cde
should redirect to
http://www.somesite.com/page.html?somevar=abc&id=b64540a6-b12d-443f-973f-673e4451ccbe&othervar=cde
On the rewrite file I've created a rewrite map as such:
<rewriteMaps>
<rewriteMap name="newIdentifierMap">
<add key="1234" value="b64540a6-b12d-443f-973f-673e4451ccbe" />
</rewriteMap>
</rewriteMaps>
But now I'm having some trouble creating the rule to use this map. This is what I was doing...
<rule>
<match url=".*" />
<conditions>
<add input="{newIdentifierMap:REQUEST_URI}" pattern="(.*)id=([0-9]+)(.*)" />
</conditions>
<action type="Redirect" url="" RedirectType="Permanent" />
</rule>
Now I'm block without knowing how exactly to replace the values in the map.
Thanks for any help!
Solution
After checking the answer provided by #abraham-qian I was able to solve the issue by applying the following rules:
<rule>
<match url="(.*)" />
<conditions>
<add input="{QUERY_STRING}" pattern="(.*)(\bid=([0-9]+))(.*)" />
</conditions>
<action type="Redirect" url="{R:0}?{C:1}id={newIdentifierMap:{C:3}}{C:4}" RedirectType="Permanent" appendQueryString="false" />
</rule>
<rewriteMaps>
<rewriteMap name="newIdentifierMap">
<add key="1234" value="b64540a6-b12d-443f-973f-673e4451ccbe" />
</rewriteMap>
</rewriteMaps>
This seems to be working fine with any number of variables before or after the id variable in the querystring.
In order to match the ID segment, we could use {Query_String} server variable.
Please refer to below code snippets,
<rewrite>
<rules>
<rule name="MyRules" stopProcessing="true">
<match url="(.*)" />
<conditions>
<add input="{QUERY_STRING}" pattern="(.*)(\bid=([0-9]+))(.*)" />
</conditions>
<!--{C:3} is the value of id, it is referred by the above condition.-->
<action type="Redirect" url="Https://vabqia969vm:448/{MyMap:{C:3}}" appendQueryString="false" />
</rule>
</rules>
<rewriteMaps>
<rewriteMap name="MyMapName" defaultValue="">
<add key="1234" value="HtmlPage1.html"></add>
</rewriteMap>
</rewriteMaps>
</rewrite>
However, there is an issue that we should uncheck the option Append Query String, or will cause an endless loop since the appended query string meets the condition. We have to match each query field one by one. Like this,
(somevar=.*)&(\bid=([0-9]+))&(othervar=.*)
We had better modify the rules according to your situation.
Feel free to let me know if there is anything I can help with.

IIS URL Rewrite

I have the following rewrite rule:
<rewrite>
<rules>
<rule name="FrontController" stopProcessing="true">
<match url="^(.*)$" ignoreCase="false" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
</conditions>
<action type="Rewrite" url="wcf/api.svc/auth/home" />
</rule>
</rules>
</rewrite>
This basically rewrites all non-file urls to web service api calls that returns index.html in an SPA backed by WCF.
The above rewrite ends up including all the query string parameters that were included with the original URL. What I need to do is also include the original URL, such as, 'wcf/api.svc/auth/products', as a query string parameter in the rewritten URL, such as 'https://domain.com/wcf/api.svc/auth/products?enc=lkjewro8xlkz' being transformed into 'https://domain.com/wcf/api.svc/auth/home?enc=lkjewro8xlkz&orig=wcf/api.svc/auth/products'.
Is this possible, and if so, what changes would I need to make to achieve it? I would like for my WCF application to know about the original URL so that it can configure the SPA to initialize to a particular view on load.
Thanks
It's quite possible.
You need to add the URL Encoded value of the {REQUEST_URI} to the Rewrite URL.
<rewrite>
<rules>
<rule name="FrontController" stopProcessing="true">
<match url="^(.*)$" ignoreCase="false" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
</conditions>
<action type="Rewrite" url="wcf/api.svc/auth/home?orig={UrlEncode:{REQUEST_URI}}" />
</rule>
</rules>
</rewrite>
With this rule, in your WCF endpoint orig parameter would be:
/wcf/api.svc/auth/products?enc=lkjewro8xlkz
If you don't want the query string part (?enc=lkjewro8xlkz), you'll need an extra condition to match the URI without query string.
<rewrite>
<rules>
<rule name="FrontController" stopProcessing="true">
<match url="^(.*)$" ignoreCase="false" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<!-- match any character up to a question mark -->
<add input="{REQUEST_URI}" pattern="^[^\?]+" />
</conditions>
<!-- {C:0} means the first match in conditions -->
<action type="Rewrite" url="wcf/api.svc/auth/home?orig={UrlEncode:{C:0}}" />
</rule>
</rules>
</rewrite>
Now, orig will be /wcf/api.svc/auth/products in the WCF endpoint.
Hope it helps.

Url rewriting not working as expected

I am trying to rewrite the rule so that if no .svc comes in URL it should rewrite and append .svc in URL.
These are my rules:
<rewrite>
<rules>
<rule name="RemoveSVC" stopProcessing="true">
<match url="localhost/RestApp/Services/([a-zA-Z0-9]*)/(.*)$" />
<action type="Rewrite" url="localhost/RestApp/Services/{R:1}.svc/{R:2}"
appendQueryString="true" logRewrittenUrl="true" />
</rule>
</rules>
</rewrite>
Can anybody tell me why is this rule not working?
I think you want:
<rewrite>
<rules>
<rule name="RemoveSVC" stopProcessing="true">
<match url="localhost/RestApp/Services/([a-zA-Z0-9]*)/(.*)" />
<action type="Rewrite" url="localhost/RestApp/Services/{R:1}.svc/{R:2}"
appendQueryString="true" logRewrittenUrl="true" />
</rule>
</rules>
</rewrite>
Remove the $ sign on the end.
I'd also get rid of the localhost/ part because that would only work on your local dev PC, when you deploy into production it won't be localhost any more:
<match url="RestApp/Services/([a-zA-Z0-9]*)/(.*)" />
<action type="Rewrite" url="RestApp/Services/{R:1}.svc/{R:2}"
appendQueryString="true" logRewrittenUrl="true" />