import { sign } from 'aws4'; import { OptionsWithUri } from 'request'; import { parseString } from 'xml2js'; import { IExecuteFunctions, IHookFunctions, ILoadOptionsFunctions, } from 'n8n-core'; export async function awsApiRequest(this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, service: string, method: string, path: string, body?: string, headers?: object): Promise { // tslint:disable-line:no-any const credentials = this.getCredentials('aws'); if (credentials === undefined) { throw new Error('No credentials got returned!'); } const endpoint = `${service}.${credentials.region}.amazonaws.com`; // Sign AWS API request with the user credentials const signOpts = {headers: headers || {}, host: endpoint, method, path, body}; sign(signOpts, {accessKeyId: `${credentials.accessKeyId}`, secretAccessKey: `${credentials.secretAccessKey}`}); const options: OptionsWithUri = { headers: signOpts.headers, method, uri: `https://${endpoint}${signOpts.path}`, body: signOpts.body, }; try { return await this.helpers.request!(options); } catch (error) { console.error(error); const errorMessage = error.response.body.message || error.response.body.Message; if (error.statusCode === 403) { if (errorMessage === 'The security token included in the request is invalid.') { throw new Error('The AWS credentials are not valid!'); } else if (errorMessage.startsWith('The request signature we calculated does not match the signature you provided')) { throw new Error('The AWS credentials are not valid!'); } } if (errorMessage !== undefined) { throw errorMessage; } throw error.response.body; } } export async function awsApiRequestREST(this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, service: string, method: string, path: string, body?: string, headers?: object): Promise { // tslint:disable-line:no-any const response = await awsApiRequest.call(this, service, method, path, body, headers); try { return JSON.parse(response); } catch (e) { return response; } } export async function awsApiRequestSOAP(this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions, service: string, method: string, path: string, body?: string, headers?: object): Promise { // tslint:disable-line:no-any const response = await awsApiRequest.call(this, service, method, path, body, headers); try { return await new Promise((resolve, reject) => { parseString(response, { explicitArray: false }, (err, data) => { if (err) { return reject(err); } resolve(data); }); }); } catch (e) { return response; } }