59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// (c) Copyright 2016 Hewlett Packard Enterprise Development LP
|
|
//
|
|
// 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.
|
|
|
|
package rules
|
|
|
|
import (
|
|
"go/ast"
|
|
"regexp"
|
|
|
|
"github.com/securego/gosec"
|
|
)
|
|
|
|
type badTempFile struct {
|
|
gosec.MetaData
|
|
calls gosec.CallList
|
|
args *regexp.Regexp
|
|
}
|
|
|
|
func (t *badTempFile) ID() string {
|
|
return t.MetaData.ID
|
|
}
|
|
|
|
func (t *badTempFile) Match(n ast.Node, c *gosec.Context) (gi *gosec.Issue, err error) {
|
|
if node := t.calls.ContainsCallExpr(n, c, false); node != nil {
|
|
if arg, e := gosec.GetString(node.Args[0]); t.args.MatchString(arg) && e == nil {
|
|
return gosec.NewIssue(c, n, t.ID(), t.What, t.Severity, t.Confidence), nil
|
|
}
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
// NewBadTempFile detects direct writes to predictable path in temporary directory
|
|
func NewBadTempFile(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
|
|
calls := gosec.NewCallList()
|
|
calls.Add("io/ioutil", "WriteFile")
|
|
calls.Add("os", "Create")
|
|
return &badTempFile{
|
|
calls: calls,
|
|
args: regexp.MustCompile(`^/tmp/.*$|^/var/tmp/.*$`),
|
|
MetaData: gosec.MetaData{
|
|
ID: id,
|
|
Severity: gosec.Medium,
|
|
Confidence: gosec.High,
|
|
What: "File creation in shared tmp directory without using ioutil.Tempfile",
|
|
},
|
|
}, []ast.Node{(*ast.CallExpr)(nil)}
|
|
}
|