76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
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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 gosec
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import (
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"go/ast"
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"go/types"
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"strings"
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)
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// ImportTracker is used to normalize the packages that have been imported
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// by a source file. It is able to differentiate between plain imports, aliased
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// imports and init only imports.
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type ImportTracker struct {
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Imported map[string]string
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Aliased map[string]string
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InitOnly map[string]bool
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}
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// NewImportTracker creates an empty Import tracker instance
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func NewImportTracker() *ImportTracker {
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return &ImportTracker{
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make(map[string]string),
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make(map[string]string),
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make(map[string]bool),
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}
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}
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// TrackFile track all the imports used by the supplied file
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func (t *ImportTracker) TrackFile(file *ast.File) {
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for _, imp := range file.Imports {
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path := strings.Trim(imp.Path.Value, `"`)
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parts := strings.Split(path, "/")
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if len(parts) > 0 {
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name := parts[len(parts)-1]
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t.Imported[path] = name
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}
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}
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}
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// TrackPackages tracks all the imports used by the supplied packages
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func (t *ImportTracker) TrackPackages(pkgs ...*types.Package) {
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for _, pkg := range pkgs {
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t.Imported[pkg.Path()] = pkg.Name()
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}
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}
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// TrackImport tracks imports and handles the 'unsafe' import
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func (t *ImportTracker) TrackImport(n ast.Node) {
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if imported, ok := n.(*ast.ImportSpec); ok {
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path := strings.Trim(imported.Path.Value, `"`)
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if imported.Name != nil {
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if imported.Name.Name == "_" {
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// Initialization only import
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t.InitOnly[path] = true
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} else {
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// Aliased import
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t.Aliased[path] = imported.Name.Name
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}
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}
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if path == "unsafe" {
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t.Imported[path] = path
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}
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}
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}
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