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feat(core): Add SAML XML validation (n8n-io#5600)
* consolidate SSO settings * update saml settings * fix type error * limit user changes when saml is enabled * add test * add toggle endpoint and fetch metadata * rename enabled param * add handling of POST saml login request * add config test endpoint * adds saml XML validation * add comment * protect test endpoint * improve ignoreSSL and some cleanup * fix wrong schema used * remove console.log
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| import { LoggerProxy } from 'n8n-workflow'; | ||
| import type { XMLFileInfo } from 'xmllint-wasm'; | ||
| import { validateXML } from 'xmllint-wasm'; | ||
| import { xsdSamlSchemaAssertion20 } from './schema/saml-schema-assertion-2.0.xsd'; | ||
| import { xsdSamlSchemaMetadata20 } from './schema/saml-schema-metadata-2.0.xsd'; | ||
| import { xsdSamlSchemaProtocol20 } from './schema/saml-schema-protocol-2.0.xsd'; | ||
| import { xsdXenc } from './schema/xenc-schema.xsd'; | ||
| import { xsdXml } from './schema/xml.xsd'; | ||
| import { xsdXmldsigCore } from './schema/xmldsig-core-schema.xsd'; | ||
|
|
||
| const xml: XMLFileInfo = { | ||
| fileName: 'xml.xsd', | ||
| contents: xsdXml, | ||
| }; | ||
|
|
||
| const xmldsigCore: XMLFileInfo = { | ||
| fileName: 'xmldsig-core-schema.xsd', | ||
| contents: xsdXmldsigCore, | ||
| }; | ||
|
|
||
| const xmlXenc: XMLFileInfo = { | ||
| fileName: 'xenc-schema.xsd', | ||
| contents: xsdXenc, | ||
| }; | ||
|
|
||
| const xmlMetadata: XMLFileInfo = { | ||
| fileName: 'saml-schema-metadata-2.0.xsd', | ||
| contents: xsdSamlSchemaMetadata20, | ||
| }; | ||
|
|
||
| const xmlAssertion: XMLFileInfo = { | ||
| fileName: 'saml-schema-assertion-2.0.xsd', | ||
| contents: xsdSamlSchemaAssertion20, | ||
| }; | ||
|
|
||
| const xmlProtocol: XMLFileInfo = { | ||
| fileName: 'saml-schema-protocol-2.0.xsd', | ||
| contents: xsdSamlSchemaProtocol20, | ||
| }; | ||
|
|
||
| export async function validateMetadata(metadata: string): Promise<boolean> { | ||
| try { | ||
| const validationResult = await validateXML({ | ||
| xml: [ | ||
| { | ||
| fileName: 'metadata.xml', | ||
| contents: metadata, | ||
| }, | ||
| ], | ||
| extension: 'schema', | ||
| schema: [xmlMetadata], | ||
| preload: [xmlProtocol, xmlAssertion, xmldsigCore, xmlXenc, xml], | ||
| }); | ||
| if (validationResult.valid) { | ||
| LoggerProxy.debug('SAML Metadata is valid'); | ||
| return true; | ||
| } else { | ||
| LoggerProxy.warn('SAML Validate Metadata: Invalid metadata'); | ||
| LoggerProxy.warn(validationResult.errors.join('\n')); | ||
| } | ||
| } catch (error) { | ||
| // eslint-disable-next-line @typescript-eslint/no-unsafe-argument | ||
| LoggerProxy.warn(error); | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| export async function validateResponse(response: string): Promise<boolean> { | ||
| try { | ||
| const validationResult = await validateXML({ | ||
| xml: [ | ||
| { | ||
| fileName: 'response.xml', | ||
| contents: response, | ||
| }, | ||
| ], | ||
| extension: 'schema', | ||
| schema: [xmlProtocol], | ||
| preload: [xmlMetadata, xmlAssertion, xmldsigCore, xmlXenc, xml], | ||
| }); | ||
| if (validationResult.valid) { | ||
| LoggerProxy.debug('SAML Response is valid'); | ||
| return true; | ||
| } else { | ||
| LoggerProxy.warn('SAML Validate Response: Failed'); | ||
| LoggerProxy.warn(validationResult.errors.join('\n')); | ||
| } | ||
| } catch (error) { | ||
| // eslint-disable-next-line @typescript-eslint/no-unsafe-argument | ||
| LoggerProxy.warn(error); | ||
| } | ||
| return false; | ||
| } |
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