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authorDmitry Vyukov <dvyukov@google.com>2020-07-04 11:12:55 +0200
committerDmitry Vyukov <dvyukov@google.com>2020-07-04 15:05:30 +0200
commitc7d7f10bdff703e4a3c0414e8a33d4e45c91eb35 (patch)
tree0dff0ee1f98dbfa3ad8776112053a450d176592b /vendor/github.com/securego/gosec/v2/rules/fileperms.go
parent9573094ce235bd9afe88f5da27a47dd6bcc1e13b (diff)
go.mod: vendor golangci-lint
Diffstat (limited to 'vendor/github.com/securego/gosec/v2/rules/fileperms.go')
-rw-r--r--vendor/github.com/securego/gosec/v2/rules/fileperms.go111
1 files changed, 111 insertions, 0 deletions
diff --git a/vendor/github.com/securego/gosec/v2/rules/fileperms.go b/vendor/github.com/securego/gosec/v2/rules/fileperms.go
new file mode 100644
index 000000000..ffe7b97d5
--- /dev/null
+++ b/vendor/github.com/securego/gosec/v2/rules/fileperms.go
@@ -0,0 +1,111 @@
+// (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 (
+ "fmt"
+ "go/ast"
+ "strconv"
+
+ "github.com/securego/gosec/v2"
+)
+
+type filePermissions struct {
+ gosec.MetaData
+ mode int64
+ pkg string
+ calls []string
+}
+
+func (r *filePermissions) ID() string {
+ return r.MetaData.ID
+}
+
+func getConfiguredMode(conf map[string]interface{}, configKey string, defaultMode int64) int64 {
+ var mode = defaultMode
+ if value, ok := conf[configKey]; ok {
+ switch value := value.(type) {
+ case int64:
+ mode = value
+ case string:
+ if m, e := strconv.ParseInt(value, 0, 64); e != nil {
+ mode = defaultMode
+ } else {
+ mode = m
+ }
+ }
+ }
+ return mode
+}
+
+func (r *filePermissions) Match(n ast.Node, c *gosec.Context) (*gosec.Issue, error) {
+ if callexpr, matched := gosec.MatchCallByPackage(n, c, r.pkg, r.calls...); matched {
+ modeArg := callexpr.Args[len(callexpr.Args)-1]
+ if mode, err := gosec.GetInt(modeArg); err == nil && mode > r.mode {
+ return gosec.NewIssue(c, n, r.ID(), r.What, r.Severity, r.Confidence), nil
+ }
+ }
+ return nil, nil
+}
+
+// NewWritePerms creates a rule to detect file Writes with bad permissions.
+func NewWritePerms(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
+ mode := getConfiguredMode(conf, "G306", 0600)
+ return &filePermissions{
+ mode: mode,
+ pkg: "io/ioutil",
+ calls: []string{"WriteFile"},
+ MetaData: gosec.MetaData{
+ ID: id,
+ Severity: gosec.Medium,
+ Confidence: gosec.High,
+ What: fmt.Sprintf("Expect WriteFile permissions to be %#o or less", mode),
+ },
+ }, []ast.Node{(*ast.CallExpr)(nil)}
+}
+
+// NewFilePerms creates a rule to detect file creation with a more permissive than configured
+// permission mask.
+func NewFilePerms(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
+ mode := getConfiguredMode(conf, "G302", 0600)
+ return &filePermissions{
+ mode: mode,
+ pkg: "os",
+ calls: []string{"OpenFile", "Chmod"},
+ MetaData: gosec.MetaData{
+ ID: id,
+ Severity: gosec.Medium,
+ Confidence: gosec.High,
+ What: fmt.Sprintf("Expect file permissions to be %#o or less", mode),
+ },
+ }, []ast.Node{(*ast.CallExpr)(nil)}
+}
+
+// NewMkdirPerms creates a rule to detect directory creation with more permissive than
+// configured permission mask.
+func NewMkdirPerms(id string, conf gosec.Config) (gosec.Rule, []ast.Node) {
+ mode := getConfiguredMode(conf, "G301", 0750)
+ return &filePermissions{
+ mode: mode,
+ pkg: "os",
+ calls: []string{"Mkdir", "MkdirAll"},
+ MetaData: gosec.MetaData{
+ ID: id,
+ Severity: gosec.Medium,
+ Confidence: gosec.High,
+ What: fmt.Sprintf("Expect directory permissions to be %#o or less", mode),
+ },
+ }, []ast.Node{(*ast.CallExpr)(nil)}
+}