c540b58474
* Validate path types * Fix the year of header * Update internal/ingress/controller/config/config.go Co-authored-by: Jintao Zhang <tao12345666333@163.com> --------- Co-authored-by: Jintao Zhang <tao12345666333@163.com>
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 inspector
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import (
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"fmt"
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"regexp"
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)
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var (
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invalidAliasDirective = regexp.MustCompile(`(?s)\s*alias\s*.*;`)
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invalidRootDirective = regexp.MustCompile(`(?s)\s*root\s*.*;`)
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invalidEtcDir = regexp.MustCompile(`/etc/(passwd|shadow|group|nginx|ingress-controller)`)
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invalidSecretsDir = regexp.MustCompile(`/var/run/secrets`)
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invalidByLuaDirective = regexp.MustCompile(`.*_by_lua.*`)
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// validPathType enforces alphanumeric, -, _ and / characters.
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// The field (?i) turns this regex case insensitive
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// The remaining regex says that the string must start with a "/" (^/)
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// the group [[:alnum:]\_\-\/]* says that any amount of characters (A-Za-z0-9), _, - and /
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// are accepted until the end of the line
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// Nothing else is accepted.
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validPathType = regexp.MustCompile(`(?i)^/[[:alnum:]\_\-\/]*$`)
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invalidRegex = []regexp.Regexp{}
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)
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func init() {
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invalidRegex = []regexp.Regexp{
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*invalidAliasDirective,
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*invalidRootDirective,
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*invalidEtcDir,
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*invalidSecretsDir,
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*invalidByLuaDirective,
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}
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}
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// CheckRegex receives a value/configuration and validates if it matches with one of the
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// forbidden regexes.
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func CheckRegex(value string) error {
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for _, regex := range invalidRegex {
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if regex.MatchString(value) {
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return fmt.Errorf("invalid value found: %s", value)
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}
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}
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return nil
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}
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