feat(isURL): add allow_fragments and allow_query_components (#1721)

* feat(isURL): add `allow_fragments` option

* feat(isURL): add `allow_query_components` option

Author: cowboy-bebug

README.md

@@ -156,7 +156,7 @@ Validator                               | Description
 **isSlug**                              | Check if the string is of type slug. `Options` allow a single hyphen between string. e.g. [`cn-cn`, `cn-c-c`]
 **isStrongPassword(str [, options])**   | Check if a password is strong or not. Allows for custom requirements or scoring rules. If `returnScore` is true, then the function returns an integer score for the password rather than a boolean.<br/>Default options: <br/>`{ minLength: 8, minLowercase: 1, minUppercase: 1, minNumbers: 1, minSymbols: 1, returnScore: false, pointsPerUnique: 1, pointsPerRepeat: 0.5, pointsForContainingLower: 10, pointsForContainingUpper: 10, pointsForContainingNumber: 10, pointsForContainingSymbol: 10 }`
 **isTaxID(str, locale)**                | Check if the given value is a valid Tax Identification    Number. Default locale is `en-US`.<br/><br/>More info about exact TIN support can be found in `src/lib/isTaxID.js`<br/><br/>Supported locales: `[ 'bg-BG', 'cs-CZ', 'de-AT', 'de-DE', 'dk-DK', 'el-CY', 'el-GR', 'en-GB', 'en-IE', 'en-US', 'es-ES', 'et-EE', 'fi-FI', 'fr-BE', 'fr-FR', 'fr-LU', 'hr-HR', 'hu-HU', 'it-IT', 'lb-LU', 'lt-LT', 'lv-LV' 'mt-MT', 'nl-BE', 'nl-NL', 'pl-PL', 'pt-BR', 'pt-PT', 'ro-RO', 'sk-SK', 'sl-SI', 'sv-SE' ]`
-**isURL(str [, options])**              | check if the string is an URL.<br/><br/>`options` is an object which defaults to `{ protocols: ['http','https','ftp'], require_tld: true, require_protocol: false, require_host: true, require_port: false, require_valid_protocol: true, allow_underscores: false, host_whitelist: false, host_blacklist: false, allow_trailing_dot: false, allow_protocol_relative_urls: false, disallow_auth: false, validate_length: true }`.<br/><br/>require_protocol - if set as true isURL will return false if protocol is not present in the URL.<br/>require_valid_protocol - isURL will check if the URL's protocol is present in the protocols option.<br/>protocols - valid protocols can be modified with this option.<br/>require_host - if set as false isURL will not check if host is present in the URL.<br/>require_port - if set as true isURL will check if port is present in the URL.<br/>allow_protocol_relative_urls - if set as true protocol relative URLs will be allowed.<br/>validate_length - if set as false isURL will skip string length validation (2083 characters is IE max URL length).
+**isURL(str [, options])**              | check if the string is an URL.<br/><br/>`options` is an object which defaults to `{ protocols: ['http','https','ftp'], require_tld: true, require_protocol: false, require_host: true, require_port: false, require_valid_protocol: true, allow_underscores: false, host_whitelist: false, host_blacklist: false, allow_trailing_dot: false, allow_protocol_relative_urls: false, allow_fragments: true, allow_query_components: true, disallow_auth: false, validate_length: true }`.<br/><br/>require_protocol - if set as true isURL will return false if protocol is not present in the URL.<br/>require_valid_protocol - isURL will check if the URL's protocol is present in the protocols option.<br/>protocols - valid protocols can be modified with this option.<br/>require_host - if set as false isURL will not check if host is present in the URL.<br/>require_port - if set as true isURL will check if port is present in the URL.<br/>allow_protocol_relative_urls - if set as true protocol relative URLs will be allowed.<br/>allow_fragments - if set as false isURL will return false if fragments are present.<br/>allow_query_components - if set as false isURL will return false if query components are present.<br/>validate_length - if set as false isURL will skip string length validation (2083 characters is IE max URL length).
 **isUUID(str [, version])**             | check if the string is a UUID (version 3, 4 or 5).
 **isVariableWidth(str)**                | check if the string contains a mixture of full and half-width chars.
 **isVAT(str, countryCode)**                | checks that the string is a [valid VAT number](https://en.wikipedia.org/wiki/VAT_identification_number) if validation is available for the given country code matching [ISO 3166-1 alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2). <br/><br/>Available country codes: `[ 'GB', 'IT' ]`.

src/lib/isURL.js

@@ -28,6 +28,8 @@ const default_url_options = {
   allow_underscores: false,
   allow_trailing_dot: false,
   allow_protocol_relative_urls: false,
+  allow_fragments: true,
+  allow_query_components: true,
   validate_length: true,
 };
 
@@ -61,6 +63,14 @@ export default function isURL(url, options) {
     return false;
   }
 
+  if (!options.allow_fragments && url.includes('#')) {
+    return false;
+  }
+
+  if (!options.allow_query_components && (url.includes('?') || url.includes('&'))) {
+    return false;
+  }
+
   let protocol, auth, host, hostname, port, port_str, split, ipv6;
 
   split = url.split('#');

test/validators.js

@@ -541,6 +541,42 @@ describe('Validators', () => {
     });
   });
 
+  it('should not validate URLs with fragments when allow fragments is false', () => {
+    test({
+      validator: 'isURL',
+      args: [{
+        allow_fragments: false,
+      }],
+      valid: [
+        'http://foobar.com',
+        'foobar.com',
+      ],
+      invalid: [
+        'http://foobar.com#part',
+        'foobar.com#part',
+      ],
+    });
+  });
+
+  it('should not validate URLs with query components when allow query components is false', () => {
+    test({
+      validator: 'isURL',
+      args: [{
+        allow_query_components: false,
+      }],
+      valid: [
+        'http://foobar.com',
+        'foobar.com',
+      ],
+      invalid: [
+        'http://foobar.com?foo=bar',
+        'http://foobar.com?foo=bar&bar=foo',
+        'foobar.com?foo=bar',
+        'foobar.com?foo=bar&bar=foo',
+      ],
+    });
+  });
+
   it('should not validate protocol relative URLs when require protocol is true', () => {
     test({
       validator: 'isURL',