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// Copyright 2021 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package main
import (
"context"
"encoding/json"
"fmt"
"io"
"time"
"cloud.google.com/go/civil"
"github.com/google/syzkaller/dashboard/api"
"github.com/google/syzkaller/pkg/cover"
"github.com/google/syzkaller/pkg/coveragedb"
)
func getExtAPIDescrForBug(bug *uiBugDetails) *api.Bug {
return &api.Bug{
Version: api.Version,
Title: bug.Title,
ID: bug.ID,
Status: bug.Status,
FirstCrash: bug.FirstTime,
LastCrash: bug.LastTime,
FixTime: func() *time.Time {
if bug.FixTime.IsZero() {
return nil
}
return &bug.FixTime
}(),
CloseTime: func() *time.Time {
if bug.ClosedTime.IsZero() {
return nil
}
return &bug.ClosedTime
}(),
Discussions: func() []string {
if bug.ExternalLink == "" {
return nil
}
return []string{bug.ExternalLink}
}(),
FixCommits: getBugFixCommits(bug.uiBug),
CauseCommit: func() *api.Commit {
bisectCause := bug.BisectCauseJob
if bisectCause == nil || bisectCause.Commit == nil {
return nil
}
commit := &api.Commit{
Title: bisectCause.Commit.Title,
Link: bisectCause.Commit.Link,
Hash: bisectCause.Commit.Hash,
Repo: bisectCause.KernelRepo,
Branch: bisectCause.KernelBranch,
}
if !bisectCause.Commit.Date.IsZero() {
commit.Date = &bisectCause.Commit.Date
}
return commit
}(),
Crashes: func() []api.Crash {
var res []api.Crash
for _, crash := range bug.Crashes {
res = append(res, api.Crash{
Title: crash.Title,
SyzReproducerLink: crash.ReproSyzLink,
CReproducerLink: crash.ReproCLink,
KernelConfigLink: crash.KernelConfigLink,
KernelSourceGit: crash.KernelCommitLink,
KernelSourceCommit: crash.KernelCommit,
SyzkallerGit: crash.SyzkallerCommitLink,
SyzkallerCommit: crash.SyzkallerCommit,
// TODO: add the CompilerDescription
// TODO: add the Architecture
CrashReportLink: crash.ReportLink,
})
}
return res
}(),
}
}
func getBugFixCommits(bug *uiBug) []api.Commit {
var res []api.Commit
for _, commit := range bug.Commits {
apiCommit := api.Commit{
Title: commit.Title,
Link: commit.Link,
Hash: commit.Hash,
Repo: commit.Repo,
Branch: commit.Branch,
}
if !commit.Date.IsZero() {
apiCommit.Date = &commit.Date
}
res = append(res, apiCommit)
}
return res
}
func getExtAPIDescrForBugGroups(bugGroups []*uiBugGroup) *api.BugGroup {
var bugs []api.BugSummary
for _, group := range bugGroups {
for _, bug := range group.Bugs {
bugs = append(bugs, api.BugSummary{
Title: bug.Title,
Link: bug.Link,
FixCommits: getBugFixCommits(bug),
})
}
}
return &api.BugGroup{
Version: api.Version,
Bugs: bugs,
}
}
type publicKernelTree struct {
Repo string `json:"repo"`
Branch string `json:"branch"`
}
type publicBackportBug struct {
Namespace string `json:"namespace"`
Title string `json:"title"`
ConfigLink string `json:"config_link"`
SyzReproLink string `json:"syz_repro_link"`
CReproLink string `json:"c_repro_link"`
SyzkallerCommit string `json:"syzkaller_commit"`
}
type publicMissingBackport struct {
From publicKernelTree `json:"from"`
To publicKernelTree `json:"to"`
Commit string `json:"commit"`
Title string `json:"title"`
Bugs []publicBackportBug `json:"bugs"`
}
type publicAPIBackports struct {
Version int `json:"version"`
List []publicMissingBackport `json:"list"`
}
func getExtAPIDescrForBackports(groups []*uiBackportGroup) *publicAPIBackports {
return &publicAPIBackports{
Version: api.Version,
List: func() []publicMissingBackport {
var res []publicMissingBackport
for _, group := range groups {
from := publicKernelTree{
Repo: group.From.URL,
Branch: group.From.Branch,
}
to := publicKernelTree{
Repo: group.To.URL,
Branch: group.To.Branch,
}
for _, backport := range group.List {
record := publicMissingBackport{
From: from,
To: to,
Commit: backport.Commit.Hash,
Title: backport.Commit.Title,
}
for ns, bugs := range backport.Bugs {
for _, info := range bugs {
record.Bugs = append(record.Bugs, publicBackportBug{
Namespace: ns,
Title: info.Bug.Title,
ConfigLink: info.Crash.KernelConfigLink,
CReproLink: info.Crash.ReproCLink,
SyzReproLink: info.Crash.ReproSyzLink,
SyzkallerCommit: info.Crash.SyzkallerCommit,
})
}
}
res = append(res, record)
}
}
return res
}(),
}
}
func GetJSONDescrFor(page any) ([]byte, error) {
var res any
switch i := page.(type) {
case *uiBugPage:
res = getExtAPIDescrForBug(i.Bug)
case *uiTerminalPage:
res = getExtAPIDescrForBugGroups([]*uiBugGroup{i.Bugs})
case *uiMainPage:
res = getExtAPIDescrForBugGroups(i.Groups)
case *uiBackportsPage:
res = getExtAPIDescrForBackports(i.Groups)
default:
return nil, ErrClientNotFound
}
return json.MarshalIndent(res, "", "\t")
}
func writeExtAPICoverageFor(ctx context.Context, w io.Writer, ns, repo string, p *coverageHeatmapParams) error {
// By default, return the previous month coverage. It guarantees the good numbers.
//
// The alternative is to return the current month.
// The numbers will jump every day, on the 1st date may drop down.
tps, err := coveragedb.GenNPeriodsTill(1, civil.DateOf(time.Now()).AddDays(-31), "month")
if err != nil {
return fmt.Errorf("coveragedb.GenNPeriodsTill: %w", err)
}
covDBClient := getCoverageDBClient(ctx)
ff, err := coveragedb.MakeFuncFinder(ctx, covDBClient, ns, tps[0])
if err != nil {
return fmt.Errorf("coveragedb.MakeFuncFinder: %w", err)
}
subsystem := ""
manager := ""
if p != nil {
subsystem = p.subsystem
manager = p.manager
}
covCh, errCh := coveragedb.FilesCoverageStream(ctx, covDBClient,
&coveragedb.SelectScope{
Ns: ns,
Subsystem: subsystem,
Manager: manager,
Periods: tps,
})
if err := writeFileCoverage(ctx, w, repo, ff, covCh); err != nil {
return fmt.Errorf("populateFileCoverage: %w", err)
}
if err := <-errCh; err != nil {
return fmt.Errorf("coveragedb.FilesCoverageStream: %w", err)
}
return nil
}
func writeFileCoverage(ctx context.Context, w io.Writer, repo string, ff *coveragedb.FunctionFinder,
covCh <-chan *coveragedb.FileCoverageWithLineInfo) error {
enc := json.NewEncoder(w)
enc.SetIndent("", "\t")
for {
select {
case fileCov := <-covCh:
if fileCov == nil {
return nil
}
funcsCov, err := genFuncsCov(fileCov, ff)
if err != nil {
return fmt.Errorf("genFuncsCov: %w", err)
}
if err := enc.Encode(&cover.FileCoverage{
Repo: repo,
Commit: fileCov.Commit,
FilePath: fileCov.Filepath,
Functions: funcsCov,
}); err != nil {
return fmt.Errorf("enc.Encode: %w", err)
}
case <-ctx.Done():
return nil
}
}
}
func genFuncsCov(fc *coveragedb.FileCoverageWithLineInfo, ff *coveragedb.FunctionFinder,
) ([]*cover.FuncCoverage, error) {
nameToLines := map[string][]*cover.Block{}
for i, hitCount := range fc.HitCounts {
lineNum := int(fc.LinesInstrumented[i])
funcName, err := ff.FileLineToFuncName(fc.Filepath, lineNum)
if err != nil {
return nil, fmt.Errorf("ff.FileLineToFuncName: %w", err)
}
nameToLines[funcName] = append(nameToLines[funcName], &cover.Block{
HitCount: int(hitCount),
FromLine: lineNum,
FromCol: 0,
ToLine: lineNum,
ToCol: -1,
})
}
var res []*cover.FuncCoverage
for funcName, blocks := range nameToLines {
res = append(res, &cover.FuncCoverage{
FuncName: funcName,
Blocks: blocks,
})
}
return res, nil
}
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