mirror of
https://github.com/securego/gosec.git
synced 2024-11-05 19:45:51 +00:00
82 lines
2.4 KiB
Go
82 lines
2.4 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 core
|
|
|
|
import (
|
|
"fmt"
|
|
"go/ast"
|
|
"go/token"
|
|
"reflect"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// helpfull "canned" matching routines ----------------------------------------
|
|
|
|
func selectName(n ast.Node, s reflect.Type) (string, bool) {
|
|
t := reflect.TypeOf(&ast.SelectorExpr{})
|
|
if node, ok := SimpleSelect(n, s, t).(*ast.SelectorExpr); ok {
|
|
t = reflect.TypeOf(&ast.Ident{})
|
|
if ident, ok := SimpleSelect(node.X, t).(*ast.Ident); ok {
|
|
return strings.Join([]string{ident.Name, node.Sel.Name}, "."), ok
|
|
}
|
|
}
|
|
return "", false
|
|
}
|
|
|
|
func MatchCall(n ast.Node, r *regexp.Regexp) *ast.CallExpr {
|
|
t := reflect.TypeOf(&ast.CallExpr{})
|
|
if name, ok := selectName(n, t); ok && r.MatchString(name) {
|
|
return n.(*ast.CallExpr)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func MatchCompLit(n ast.Node, r *regexp.Regexp) *ast.CompositeLit {
|
|
t := reflect.TypeOf(&ast.CompositeLit{})
|
|
if name, ok := selectName(n, t); ok && r.MatchString(name) {
|
|
return n.(*ast.CompositeLit)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func GetInt(n ast.Node) (int64, error) {
|
|
if node, ok := n.(*ast.BasicLit); ok && node.Kind == token.INT {
|
|
return strconv.ParseInt(node.Value, 0, 64)
|
|
}
|
|
return 0, fmt.Errorf("Unexpected AST node type: %T", n)
|
|
}
|
|
|
|
func GetFloat(n ast.Node) (float64, error) {
|
|
if node, ok := n.(*ast.BasicLit); ok && node.Kind == token.FLOAT {
|
|
return strconv.ParseFloat(node.Value, 64)
|
|
}
|
|
return 0.0, fmt.Errorf("Unexpected AST node type: %T", n)
|
|
}
|
|
|
|
func GetChar(n ast.Node) (byte, error) {
|
|
if node, ok := n.(*ast.BasicLit); ok && node.Kind == token.CHAR {
|
|
return node.Value[0], nil
|
|
}
|
|
return 0, fmt.Errorf("Unexpected AST node type: %T", n)
|
|
}
|
|
|
|
func GetString(n ast.Node) (string, error) {
|
|
if node, ok := n.(*ast.BasicLit); ok && node.Kind == token.STRING {
|
|
return strconv.Unquote(node.Value)
|
|
}
|
|
return "", fmt.Errorf("Unexpected AST node type: %T", n)
|
|
}
|