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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | /* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ import { APIGatewayProxyEvent, Context } from 'aws-lambda'; import { AuditChangeResult, FlowAudit, FlowTarget, Logger, LoggerFactory, } from 'shared_types'; import { AsyncRequestHandler } from 'src/common/AsyncRequestHandler'; import RuleConfigError from 'src/common/RuleConfigError'; import { ServerlessResponse } from 'src/common/ServerlessResponse'; import { AuditsDataSourceService } from 'src/service/AuditsDataSourceService'; import { TargetsDataSourceService } from 'src/service/TargetsDataSourceService'; import { OpaPolicyService } from 'src/service/OpaPolicyService'; import { RulesDataSourceService } from 'src/service/RulesDataSourceService'; import { inject, injectable } from 'tsyringe'; /** * @api {delete} /targets/{id} Delete an object * @apiGroup Targets * @apiDescription Delete a target referencing a cloud resource or fixed resource * @apiVersion 1.0.0 * @apiExample {curl} CURL Example: curl --location --request DELETE 'https://<rest_api_id>.execute-api.ap-southeast-2.amazonaws.com/prod/targets/target_id' * @apiParam {UUID} id The target's id. * @apiSuccess (Success 200) target updated * @apiError (Error 404) target not found * @apiError (Error 400) Invalid target value * @apiError (Error 502) Time out * @apiError (Error 503) Internal error * * @apiSuccessExample Success-Response: * HTTP/1.1 200 OK * { "id": "target_id" } * * @apiSampleRequest off */ @injectable() export class DeleteTargetHandler implements AsyncRequestHandler<APIGatewayProxyEvent, ServerlessResponse> { private readonly logger: Logger; constructor( @inject('LoggerFactory') loggerFactory: LoggerFactory, @inject('ObjectsDataSourceService') private targetsDataSourceService: TargetsDataSourceService, @inject('RulesDataSourceService') private ruleDataSourceService: RulesDataSourceService, @inject('AuditsDataSourceService') private auditsDataSourceService: AuditsDataSourceService, @inject('OpaPolicyService') private opaPolicyService: OpaPolicyService ) { this.logger = loggerFactory.getLogger('DeleteObjectHandler'); } async handle( event: APIGatewayProxyEvent, // eslint-disable-next-line @typescript-eslint/no-unused-vars _context: Context ): Promise<ServerlessResponse> { this.logger.debug('Processing delete rule target request'); if (!event.pathParameters) { return ServerlessResponse.ofError(new RuleConfigError(undefined, 400, false)); } const id = event.pathParameters['id']; if (!id) { this.logger.info('Rule target id path parameter cannot be null or empty.'); return ServerlessResponse.ofError( new RuleConfigError( 'Rule target id path parameter cannot be null or empty.', 400, false ) ); } const originalTarget = await this.targetsDataSourceService.getTargetBy(id); if (!originalTarget) { this.logger.info(`Target ${id} does not exist`); return ServerlessResponse.ofError( new RuleConfigError(`Target ${id} does not exist`, 404, false) ); } const requestorIdentity = event.requestContext.identity?.userArn ?? 'Unknown'; const accountId = event.requestContext.accountId ?? '100000'; this.logger.info('requesting decision from opa'); try { const response = await this.opaPolicyService.requestDecision( { requester: { arn: requestorIdentity, accountId: accountId, }, }, { object: originalTarget }, 'DELETE' ); this.logger.info(' opa decision response', response); if (response.status === 'NON_COMPLIANT') { return ServerlessResponse.ofObject(400, { message: response.reasonPhrases, }); } } catch (e) { this.logger.error('opa error', e); return ServerlessResponse.ofObject(500, { message: `Unable to determine user accessibility, ${e}`, }); } try { this.logger.info(`deleting object ${id}`); const rules = await this.ruleDataSourceService.getRuleByReferences(id); if (rules.length > 0) { this.logger.error( 'Error while deleting rule target, which has existing reference', originalTarget ); const rulesIds = rules.map((r) => r.id); return ServerlessResponse.ofObject(400, { message: `Object ${id} is referenced by rules ${rulesIds}` }); } await this.targetsDataSourceService.deleteObject(id); await this.auditEntry( requestorIdentity, 'SUCCESS', originalTarget, undefined ); return ServerlessResponse.ofObject(200, { id: id }); } catch (e) { this.logger.error('Error while deleting rule target', e, originalTarget); this.auditEntry(requestorIdentity, 'REJECTED', originalTarget, [e.message]); return ServerlessResponse.ofObject(500, { message: `Error while deleting rule target ${id}`, }); } } async auditEntry( requestorIdentity: string, status: AuditChangeResult, object: FlowTarget, reasons?: string[] ): Promise<FlowAudit> { return await this.auditsDataSourceService.createAuditEntry({ requestedBy: requestorIdentity, requestedTimestamp: new Date().toISOString(), requestedChange: { type: 'DELETE', //CREATE/UPDATE/DELETE changeContent: { requestedObject: object, }, changeResult: status, // SUCCESS, REJECTED reasonPhrase: reasons ?? [], }, }); } } |