URIValidator.InAzureStorageDomain Method

Use Case

The code is making requests to a URL constructed using untrusted inputs, where an input is considered untrusted if it comes from user input or other services.

AND

The URL is expected to belong to an Azure Storage Domain.

• If you instead expect the domain to be in any domain or an untrusted domain, see AntiSSRFPolicy.
• If you instead expect the URL to be an Azure Key Vault endpoint, see InAzureKeyVaultDomain.
• If you instead expect the domain to be another specific, trusted domain, see InDomain.

Definition

Validates if a URL is an Azure Storage endpoint.

Overloads

Method	Description
InAzureStorageDomain(Uri)	Validates if a URL is an Azure Storage endpoint.
InAzureStorageDomain(string)	Validates if a URL is an Azure Storage endpoint.

InAzureStorageDomain(Uri)

public static bool InAzureStorageDomain(Uri uri)

Parameters

uri: Uri

The URI to be evaluated.

Returns

bool

• true if uri belongs to any of the listed Azure Storage domains.
• false if uri does not belong to any of the listed Azure Storage domains, the URI is not valid, or the protocol is not HTTP/S.

InAzureStorageDomain(string)

public static bool InAzureStorageDomain(string address)

Parameters

address: string

The URI string to be evaluated.

Returns

bool

• true if address belongs to any of the listed Azure Storage domains.
• false if address does not belong to any of the listed Azure Storage domains, the string is not a valid URI, or the protocol is not HTTP/S.

Examples

using Microsoft.Security.AntiSSRF;
using System;

URIValidator.InAzureStorageDomain("https://mystorageaccount.blob.core.windows.net/container/file.txt");
// → true

URIValidator.InAzureStorageDomain("https://evil.com/data");
// → false

var uri = new Uri("https://mystorageaccount.blob.core.windows.net/container/file.txt");
URIValidator.InAzureStorageDomain(uri);
// → true

Azure Storage Domain Names

InAzureStorageDomain will evaluate whether the given parameter belongs to any combination of the following domains and services:

Domains:

• core.windows.net
• storage.azure.net
• core.usgovcloudapi.net
• core.chinacloudapi.cn

Services:

• blob
• web
• dfs
• file
• queue
• table