mirror of
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49 lines
1.5 KiB
Go
49 lines
1.5 KiB
Go
// (c) Copyright 2016 Hewlett Packard Enterprise Development LP
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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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package rules
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import (
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"go/ast"
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"regexp"
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gas "github.com/GoASTScanner/gas/core"
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)
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type BadTempFile struct {
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gas.MetaData
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args *regexp.Regexp
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call *regexp.Regexp
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}
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func (t *BadTempFile) Match(n ast.Node, c *gas.Context) (gi *gas.Issue, err error) {
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if node := gas.MatchCall(n, t.call); node != nil {
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if arg, e := gas.GetString(node.Args[0]); t.args.MatchString(arg) && e == nil {
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return gas.NewIssue(c, n, t.What, t.Severity, t.Confidence), nil
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}
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}
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return nil, nil
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}
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func NewBadTempFile(conf map[string]interface{}) (gas.Rule, []ast.Node) {
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return &BadTempFile{
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call: regexp.MustCompile(`ioutil\.WriteFile|os\.Create`),
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args: regexp.MustCompile(`^/tmp/.*$|^/var/tmp/.*$`),
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MetaData: gas.MetaData{
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Severity: gas.Medium,
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Confidence: gas.High,
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What: "File creation in shared tmp directory without using ioutil.Tempfile",
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},
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}, []ast.Node{(*ast.CallExpr)(nil)}
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}
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