gosec/rules/templates.go
Dale Hui 762ff3a709 Allow quoted strings to be used to format SQL queries (#240)
* Support stripping vendor paths when matching calls

* Factor out matching of formatter string

* Quoted strings are safe to use with SQL str formatted strings

* Add test for allowing quoted strings with string formatters

* Install the pq package for tests to pass
2018-09-25 10:40:05 +03:00

61 lines
1.8 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"
"github.com/securego/gosec"
)
type templateCheck struct {
gosec.MetaData
calls gosec.CallList
}
func (t *templateCheck) ID() string {
return t.MetaData.ID
}
func (t *templateCheck) Match(n ast.Node, c *gosec.Context) (*gosec.Issue, error) {
if node := t.calls.ContainsCallExpr(n, c, false); node != nil {
for _, arg := range node.Args {
if _, ok := arg.(*ast.BasicLit); !ok { // basic lits are safe
return gosec.NewIssue(c, n, t.ID(), t.What, t.Severity, t.Confidence), nil
}
}
}
return nil, nil
}
// NewTemplateCheck constructs the template check rule. This rule is used to
// find use of tempaltes where HTML/JS escaping is not being used
func NewTemplateCheck(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
calls := gosec.NewCallList()
calls.Add("html/template", "HTML")
calls.Add("html/template", "HTMLAttr")
calls.Add("html/template", "JS")
calls.Add("html/template", "URL")
return &templateCheck{
calls: calls,
MetaData: gosec.MetaData{
ID: id,
Severity: gosec.Medium,
Confidence: gosec.Low,
What: "this method will not auto-escape HTML. Verify data is well formed.",
},
}, []ast.Node{(*ast.CallExpr)(nil)}
}