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// Copyright 2021 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 vulncheck
import (
"fmt"
"runtime"
"sort"
"golang.org/x/vuln/internal/semver"
"golang.org/x/vuln/internal/test"
"golang.org/x/vuln/osv"
)
// testClient contains the following test vulnerabilities
//
// golang.org/amod/avuln.{VulnData.Vuln1, vulnData.Vuln2}
// golang.org/bmod/bvuln.Vuln
// archive/zip.OpenReader
var testClient = &test.MockClient{
Ret: map[string][]*osv.Entry{
"golang.org/amod": []*osv.Entry{
{
ID: "VA",
Affected: []osv.Affected{{
Package: osv.Package{Name: "golang.org/amod"},
Ranges: osv.Affects{{Type: osv.TypeSemver, Events: []osv.RangeEvent{{Introduced: "1.0.0"}, {Fixed: "1.0.4"}, {Introduced: "1.1.2"}}}},
EcosystemSpecific: osv.EcosystemSpecific{Imports: []osv.EcosystemSpecificImport{{
Path: "golang.org/amod/avuln",
Symbols: []string{"VulnData.Vuln1", "VulnData.Vuln2"}},
}},
}},
},
},
"golang.org/bmod": []*osv.Entry{
{
ID: "VB",
Affected: []osv.Affected{{
Package: osv.Package{Name: "golang.org/bmod"},
Ranges: osv.Affects{{Type: osv.TypeSemver}},
EcosystemSpecific: osv.EcosystemSpecific{
Imports: []osv.EcosystemSpecificImport{{
Path: "golang.org/bmod/bvuln",
Symbols: []string{"Vuln"},
}},
},
}},
},
},
"stdlib": []*osv.Entry{
{
ID: "STD",
Affected: []osv.Affected{{
Package: osv.Package{Name: "stdlib"},
// Range is populated also using runtime info for testing binaries since
// setting fixed Go version for binaries is very difficult.
Ranges: osv.Affects{{Type: osv.TypeSemver, Events: []osv.RangeEvent{{Introduced: "1.18"}, {Introduced: semver.GoTagToSemver(runtime.Version())}}}},
EcosystemSpecific: osv.EcosystemSpecific{
Imports: []osv.EcosystemSpecificImport{{
Path: "archive/zip",
Symbols: []string{"OpenReader"},
}},
},
}},
},
},
},
}
func moduleVulnerabilitiesToString(mv moduleVulnerabilities) string {
var s string
for _, m := range mv {
s += fmt.Sprintf("mod: %v\n", m.mod)
for _, v := range m.vulns {
s += fmt.Sprintf("\t%v\n", v)
}
}
return s
}
func vulnsToString(vulns []*osv.Entry) string {
var s string
for _, v := range vulns {
s += fmt.Sprintf("\t%v\n", v)
}
return s
}
func impGraphToStrMap(ig *ImportGraph) map[string][]string {
m := make(map[string][]string)
for _, n := range ig.Packages {
for _, predId := range n.ImportedBy {
pred := ig.Packages[predId]
m[pred.Path] = append(m[pred.Path], n.Path)
}
}
sortStrMap(m)
return m
}
func reqGraphToStrMap(rg *RequireGraph) map[string][]string {
m := make(map[string][]string)
for _, n := range rg.Modules {
for _, predId := range n.RequiredBy {
pred := rg.Modules[predId]
m[pred.Path] = append(m[pred.Path], n.Path)
}
}
sortStrMap(m)
return m
}
func callGraphToStrMap(cg *CallGraph) map[string][]string {
type edge struct {
// src and dest are ids ofr source and
// destination nodes in a callgraph edge.
src, dst int
}
// seen edges, to avoid repetitions
seen := make(map[edge]bool)
m := make(map[string][]string)
for _, n := range cg.Functions {
fName := n.String()
for _, callsite := range n.CallSites {
e := edge{src: callsite.Parent, dst: n.ID}
if seen[e] {
continue
}
caller := cg.Functions[e.src]
callerName := caller.String()
m[callerName] = append(m[callerName], fName)
}
}
sortStrMap(m)
return m
}
func pkgPathToImports(pkgs []*Package) map[string][]string {
m := make(map[string][]string)
seen := make(map[*Package]bool)
var visit func(*Package)
visit = func(p *Package) {
if seen[p] {
return
}
seen[p] = true
var imports []string
for _, i := range p.Imports {
imports = append(imports, i.PkgPath)
visit(i)
}
m[p.PkgPath] = imports
}
for _, p := range pkgs {
visit(p)
}
sortStrMap(m)
return m
}
func modulePathToVersion(pkgs []*Package) map[string]string {
m := make(map[string]string)
seen := make(map[*Package]bool)
var visit func(*Package)
visit = func(p *Package) {
if seen[p] || p.Module == nil {
return
}
seen[p] = true
for _, i := range p.Imports {
visit(i)
}
m[p.Module.Path] = p.Module.Version
}
for _, p := range pkgs {
visit(p)
}
return m
}
// sortStrMap sorts the map string slice values to make them deterministic.
func sortStrMap(m map[string][]string) {
for _, strs := range m {
sort.Strings(strs)
}
}
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