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// Copyright 2023 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"
"flag"
"log"
"path/filepath"
"runtime"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/google/syzkaller/dashboard/dashapi"
"github.com/google/syzkaller/pkg/email"
"github.com/google/syzkaller/pkg/email/lore"
"github.com/google/syzkaller/pkg/hash"
"github.com/google/syzkaller/pkg/osutil"
"github.com/google/syzkaller/pkg/tool"
"github.com/google/syzkaller/pkg/vcs"
"golang.org/x/sync/errgroup"
)
// The syz-lore tool can parse Lore archives and extract syzbot-related conversations from there.
var (
flagEmails = flag.String("emails", "", "comma-separated list of own emails")
flagDomains = flag.String("domains", "", "comma-separated list of own domains")
flagOutDir = flag.String("out_dir", "", "a directory to save discussions as JSON files")
flagDashboard = flag.String("dashboard", "", "dashboard address")
flagAPIClient = flag.String("client", "", "the name of the API client")
flagAPIKey = flag.String("key", "", "api key")
flagVerbose = flag.Bool("v", false, "print more debug info")
)
func main() {
defer tool.Init()()
if len(flag.Args()) == 0 {
tool.Failf("format: syz-lore [flags] dir1 [dir2 ...]")
}
emails := strings.Split(*flagEmails, ",")
domains := strings.Split(*flagDomains, ",")
threads := processArchives(flag.Args(), emails, domains)
for i, thread := range threads {
messages := []dashapi.DiscussionMessage{}
for _, m := range thread.Messages {
messages = append(messages, dashapi.DiscussionMessage{
ID: m.MessageID,
External: !m.OwnEmail,
Time: m.Date,
Email: m.Author,
})
}
discussion := &dashapi.Discussion{
ID: thread.MessageID,
Source: dashapi.DiscussionLore,
Type: thread.Type,
Subject: thread.Subject,
BugIDs: thread.BugIDs,
Messages: messages,
}
log.Printf("saving %d/%d", i+1, len(threads))
err := saveDiscussion(discussion)
if err != nil {
tool.Fail(err)
}
}
}
var dash *dashapi.Dashboard
func saveDiscussion(d *dashapi.Discussion) error {
var err error
if *flagDashboard != "" && dash == nil {
dash, err = dashapi.New(*flagAPIClient, *flagDashboard, *flagAPIKey)
if err != nil {
tool.Failf("dashapi failed: %v", err)
}
}
if *flagOutDir != "" {
bytes, err := json.Marshal(d)
if err != nil {
return err
}
path := filepath.Join(*flagOutDir, hash.String([]byte(d.ID))+".json")
err = osutil.WriteFile(path, bytes)
if err != nil {
return err
}
}
if dash != nil {
return dash.SaveDiscussion(&dashapi.SaveDiscussionReq{
Discussion: d,
})
}
return nil
}
func processArchives(paths, emails, domains []string) []*lore.Thread {
threads := runtime.NumCPU()
messages := make(chan lore.EmailReader, threads*2)
wg := sync.WaitGroup{}
g, _ := errgroup.WithContext(context.Background())
// Generate per-email jobs.
for _, path := range paths {
log.Printf("reading %s", path)
wg.Add(1)
g.Go(func() error {
defer wg.Done()
repo := vcs.NewLKMLRepo(path)
list, err := lore.ReadArchive(repo, "", time.Time{})
if err != nil {
return err
}
for _, reader := range list {
messages <- reader
}
return nil
})
}
// Set up some worker threads.
var repoEmails []*email.Email
var mu sync.Mutex
var skipped atomic.Int64
for i := 0; i < threads; i++ {
g.Go(func() error {
for rawMsg := range messages {
msg, err := rawMsg.Parse(emails, domains)
if err != nil {
// There are many broken messages in LKML,
// no sense to print them all each time.
skipped.Add(1)
continue
}
mu.Lock()
repoEmails = append(repoEmails, msg)
mu.Unlock()
}
return nil
})
}
// Once all jobs are generated, close the processing channel.
wg.Wait()
close(messages)
if err := g.Wait(); err != nil {
tool.Failf("%s", err)
}
if cnt := skipped.Load(); cnt > 0 {
log.Printf("skipped %d messages because of parsing errors", cnt)
}
list := lore.Threads(repoEmails)
log.Printf("collected %d email threads", len(list))
ret := []*lore.Thread{}
for _, d := range list {
if d.BugIDs == nil {
continue
}
ret = append(ret, d)
if *flagVerbose {
log.Printf("discussion ID=%s BugID=%s Type=%s Subject=%s Messages=%d",
d.MessageID, d.BugIDs, d.Subject, d.Type, len(d.Messages))
}
}
log.Printf("%d threads are related to syzbot", len(ret))
return ret
}
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