mirror of
https://github.com/securego/gosec.git
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55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// 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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"github.com/securego/gosec/v2"
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"github.com/securego/gosec/v2/issue"
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)
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type usesWeakCryptographyHash struct {
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issue.MetaData
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blocklist map[string][]string
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}
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func (r *usesWeakCryptographyHash) ID() string {
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return r.MetaData.ID
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}
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func (r *usesWeakCryptographyHash) Match(n ast.Node, c *gosec.Context) (*issue.Issue, error) {
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for pkg, funcs := range r.blocklist {
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if _, matched := gosec.MatchCallByPackage(n, c, pkg, funcs...); matched {
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return c.NewIssue(n, r.ID(), r.What, r.Severity, r.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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// NewUsesWeakCryptographyHash detects uses of md5.*, sha1.*
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func NewUsesWeakCryptographyHash(id string, _ gosec.Config) (gosec.Rule, []ast.Node) {
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calls := make(map[string][]string)
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calls["crypto/md5"] = []string{"New", "Sum"}
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calls["crypto/sha1"] = []string{"New", "Sum"}
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rule := &usesWeakCryptographyHash{
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blocklist: calls,
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MetaData: issue.MetaData{
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ID: id,
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Severity: issue.Medium,
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Confidence: issue.High,
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What: "Use of weak cryptographic primitive",
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},
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}
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return rule, []ast.Node{(*ast.CallExpr)(nil)}
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}
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