mirror of https://github.com/minio/minio.git
260 lines
8.0 KiB
Go
260 lines
8.0 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import "strings"
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// List of valid event types.
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var suppportedEventTypes = map[string]struct{}{
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// Object created event types.
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"s3:ObjectCreated:*": {},
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"s3:ObjectCreated:Put": {},
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"s3:ObjectCreated:Post": {},
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"s3:ObjectCreated:Copy": {},
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"s3:ObjectCreated:CompleteMultipartUpload": {},
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// Object removed event types.
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"s3:ObjectRemoved:*": {},
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"s3:ObjectRemoved:Delete": {},
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}
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// checkEvent - checks if an event is supported.
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func checkEvent(event string) APIErrorCode {
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_, ok := suppportedEventTypes[event]
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if !ok {
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return ErrEventNotification
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}
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return ErrNone
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}
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// checkEvents - checks given list of events if all of them are valid.
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// given if one of them is invalid, this function returns an error.
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func checkEvents(events []string) APIErrorCode {
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for _, event := range events {
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if s3Error := checkEvent(event); s3Error != ErrNone {
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return s3Error
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}
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}
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return ErrNone
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}
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// Valid if filterName is 'prefix'.
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func isValidFilterNamePrefix(filterName string) bool {
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return "prefix" == filterName
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}
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// Valid if filterName is 'suffix'.
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func isValidFilterNameSuffix(filterName string) bool {
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return "suffix" == filterName
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}
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// Is this a valid filterName? - returns true if valid.
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func isValidFilterName(filterName string) bool {
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return isValidFilterNamePrefix(filterName) || isValidFilterNameSuffix(filterName)
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}
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// checkFilterRules - checks given list of filter rules if all of them are valid.
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func checkFilterRules(filterRules []filterRule) APIErrorCode {
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ruleSetMap := make(map[string]string)
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// Validate all filter rules.
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for _, filterRule := range filterRules {
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// Unknown filter rule name found, returns an appropriate error.
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if !isValidFilterName(filterRule.Name) {
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return ErrFilterNameInvalid
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}
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// Filter names should not be set twice per notification service
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// configuration, if found return an appropriate error.
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if _, ok := ruleSetMap[filterRule.Name]; ok {
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if isValidFilterNamePrefix(filterRule.Name) {
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return ErrFilterNamePrefix
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} else if isValidFilterNameSuffix(filterRule.Name) {
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return ErrFilterNameSuffix
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} else {
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return ErrFilterNameInvalid
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}
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}
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if !IsValidObjectPrefix(filterRule.Value) {
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return ErrFilterValueInvalid
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}
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// Set the new rule name to keep track of duplicates.
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ruleSetMap[filterRule.Name] = filterRule.Value
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}
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// Success all prefixes validated.
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return ErrNone
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}
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// Checks validity of input ARN for a given arnType.
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func checkARN(arn, arnType string) APIErrorCode {
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if !strings.HasPrefix(arn, arnType) {
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return ErrARNNotification
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}
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if !strings.HasPrefix(arn, arnType+serverConfig.GetRegion()+":") {
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return ErrRegionNotification
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}
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account := strings.SplitN(strings.TrimPrefix(arn, arnType+serverConfig.GetRegion()+":"), ":", 2)
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switch len(account) {
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case 1:
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// This means ARN is malformed, account should have min of 2elements.
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return ErrARNNotification
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case 2:
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// Account topic id or topic name cannot be empty.
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if account[0] == "" || account[1] == "" {
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return ErrARNNotification
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}
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}
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return ErrNone
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}
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// checkQueueARN - check if the queue arn is valid.
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func checkQueueARN(queueARN string) APIErrorCode {
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return checkARN(queueARN, minioSqs)
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}
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// Validates account id for input queue ARN.
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func isValidQueueID(queueARN string) bool {
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// Unmarshals QueueARN into structured object.
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sqsARN := unmarshalSqsARN(queueARN)
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// Is Queue identifier valid?.
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if isAMQPQueue(sqsARN) { // AMQP eueue.
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amqpN := serverConfig.GetAMQPNotifyByID(sqsARN.AccountID)
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return amqpN.Enable && amqpN.URL != ""
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} else if isNATSQueue(sqsARN) {
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natsN := serverConfig.GetNATSNotifyByID(sqsARN.AccountID)
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return natsN.Enable && natsN.Address != ""
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} else if isElasticQueue(sqsARN) { // Elastic queue.
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elasticN := serverConfig.GetElasticSearchNotifyByID(sqsARN.AccountID)
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return elasticN.Enable && elasticN.URL != ""
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} else if isRedisQueue(sqsARN) { // Redis queue.
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redisN := serverConfig.GetRedisNotifyByID(sqsARN.AccountID)
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return redisN.Enable && redisN.Addr != ""
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} else if isPostgreSQLQueue(sqsARN) {
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pgN := serverConfig.GetPostgreSQLNotifyByID(sqsARN.AccountID)
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// Postgres can work with only default conn. info.
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return pgN.Enable
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}
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return false
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}
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// Check - validates queue configuration and returns error if any.
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func checkQueueConfig(qConfig queueConfig) APIErrorCode {
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// Check queue arn is valid.
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if s3Error := checkQueueARN(qConfig.QueueARN); s3Error != ErrNone {
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return s3Error
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}
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// Validate if the account ID is correct.
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if !isValidQueueID(qConfig.QueueARN) {
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return ErrARNNotification
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}
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// Check if valid events are set in queue config.
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if s3Error := checkEvents(qConfig.Events); s3Error != ErrNone {
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return s3Error
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}
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// Check if valid filters are set in queue config.
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if s3Error := checkFilterRules(qConfig.Filter.Key.FilterRules); s3Error != ErrNone {
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return s3Error
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}
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// Success.
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return ErrNone
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}
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// Validates all incoming queue configs, checkQueueConfig validates if the
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// input fields for each queues is not malformed and has valid configuration
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// information. If validation fails bucket notifications are not enabled.
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func validateQueueConfigs(queueConfigs []queueConfig) APIErrorCode {
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for _, qConfig := range queueConfigs {
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if s3Error := checkQueueConfig(qConfig); s3Error != ErrNone {
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return s3Error
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}
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}
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// Success.
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return ErrNone
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}
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// Check all the queue configs for any duplicates.
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func checkDuplicateQueueConfigs(configs []queueConfig) APIErrorCode {
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var queueConfigARNS []string
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// Navigate through each configs and count the entries.
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for _, config := range configs {
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queueConfigARNS = append(queueConfigARNS, config.QueueARN)
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}
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// Check if there are any duplicate counts.
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if err := checkDuplicateStrings(queueConfigARNS); err != nil {
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errorIf(err, "Invalid queue configs found.")
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return ErrOverlappingConfigs
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}
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// Success.
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return ErrNone
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}
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// Validates all the bucket notification configuration for their validity,
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// if one of the config is malformed or has invalid data it is rejected.
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// Configuration is never applied partially.
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func validateNotificationConfig(nConfig notificationConfig) APIErrorCode {
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// Validate all queue configs.
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if s3Error := validateQueueConfigs(nConfig.QueueConfigs); s3Error != ErrNone {
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return s3Error
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}
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// Check for duplicate queue configs.
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if len(nConfig.QueueConfigs) > 1 {
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if s3Error := checkDuplicateQueueConfigs(nConfig.QueueConfigs); s3Error != ErrNone {
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return s3Error
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}
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}
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// Add validation for other configurations.
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return ErrNone
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}
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// Unmarshals input value of AWS ARN format into minioSqs object.
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// Returned value represents minio sqs types, currently supported are
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// - amqp
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// - nats
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// - elasticsearch
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// - redis
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// - postgresql
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func unmarshalSqsARN(queueARN string) (mSqs arnSQS) {
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mSqs = arnSQS{}
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if !strings.HasPrefix(queueARN, minioSqs+serverConfig.GetRegion()+":") {
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return mSqs
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}
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sqsType := strings.TrimPrefix(queueARN, minioSqs+serverConfig.GetRegion()+":")
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switch {
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case strings.HasSuffix(sqsType, queueTypeAMQP):
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mSqs.Type = queueTypeAMQP
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case strings.HasSuffix(sqsType, queueTypeNATS):
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mSqs.Type = queueTypeNATS
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case strings.HasSuffix(sqsType, queueTypeElastic):
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mSqs.Type = queueTypeElastic
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case strings.HasSuffix(sqsType, queueTypeRedis):
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mSqs.Type = queueTypeRedis
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case strings.HasSuffix(sqsType, queueTypePostgreSQL):
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mSqs.Type = queueTypePostgreSQL
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} // Add more queues here.
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mSqs.AccountID = strings.TrimSuffix(sqsType, ":"+mSqs.Type)
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return mSqs
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}
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