1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package client
import (
"encoding/json"
"fmt"
"io/fs"
"os"
"path/filepath"
"golang.org/x/vuln/internal/osv"
isem "golang.org/x/vuln/internal/semver"
)
// indexFromDir returns a raw index created from a directory
// containing OSV entries.
// It skips any non-JSON files but errors if any of the JSON files
// cannot be unmarshaled into OSV, or have a filename other than <ID>.json.
func indexFromDir(dir string) (map[string][]byte, error) {
idx := newIndex()
f := os.DirFS(dir)
if err := filepath.WalkDir(dir, func(path string, d fs.DirEntry, err error) error {
fname := d.Name()
ext := filepath.Ext(fname)
switch {
case err != nil:
return err
case d.IsDir():
return nil
case ext != ".json":
return nil
}
b, err := fs.ReadFile(f, d.Name())
if err != nil {
return err
}
var entry osv.Entry
if err := json.Unmarshal(b, &entry); err != nil {
return err
}
if fname != entry.ID+".json" {
return fmt.Errorf("OSV entries must have filename of the form <ID>.json, got %s", fname)
}
idx.add(&entry)
return nil
}); err != nil {
return nil, err
}
return idx.raw()
}
func indexFromEntries(entries []*osv.Entry) (map[string][]byte, error) {
idx := newIndex()
for _, entry := range entries {
idx.add(entry)
}
return idx.raw()
}
type index struct {
db *dbMeta
modules modulesIndex
}
func newIndex() *index {
return &index{
db: &dbMeta{},
modules: make(map[string]*moduleMeta),
}
}
func (i *index) add(entry *osv.Entry) {
// Add to db index.
if entry.Modified.After(i.db.Modified) {
i.db.Modified = entry.Modified
}
// Add to modules index.
for _, affected := range entry.Affected {
modulePath := affected.Module.Path
if _, ok := i.modules[modulePath]; !ok {
i.modules[modulePath] = &moduleMeta{
Path: modulePath,
Vulns: []moduleVuln{},
}
}
module := i.modules[modulePath]
module.Vulns = append(module.Vulns, moduleVuln{
ID: entry.ID,
Modified: entry.Modified,
Fixed: isem.NonSupersededFix(affected.Ranges),
})
}
}
func (i *index) raw() (map[string][]byte, error) {
data := make(map[string][]byte)
b, err := json.Marshal(i.db)
if err != nil {
return nil, err
}
data[dbEndpoint] = b
b, err = json.Marshal(i.modules)
if err != nil {
return nil, err
}
data[modulesEndpoint] = b
return data, nil
}
|
