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// Copyright 2025 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"
"fmt"
"log"
"strings"
"time"
"github.com/google/syzkaller/pkg/email"
"github.com/google/syzkaller/syz-cluster/pkg/api"
"github.com/google/syzkaller/syz-cluster/pkg/app"
"github.com/google/syzkaller/syz-cluster/pkg/emailclient"
"github.com/google/syzkaller/syz-cluster/pkg/report"
)
type Handler struct {
reporter string
apiClient *api.ReporterClient
emailConfig *app.EmailConfig
sender emailclient.Sender
}
func (h *Handler) PollReportsLoop(ctx context.Context, pollPeriod time.Duration) {
defer log.Printf("reporter server polling aborted")
log.Printf("reporter server polling started")
for {
_, err := h.PollAndReport(ctx)
if err != nil {
app.Errorf("%v", err)
}
select {
case <-ctx.Done():
return
case <-time.After(pollPeriod):
}
}
}
func (h *Handler) PollAndReport(ctx context.Context) (*api.SessionReport, error) {
reply, err := h.apiClient.GetNextReport(ctx, h.reporter)
if err != nil {
return nil, fmt.Errorf("failed to poll the next report: %w", err)
} else if reply == nil || reply.Report == nil {
return nil, nil
}
report := reply.Report
log.Printf("report %q is to be sent", report.ID)
if err := h.report(ctx, report); err != nil {
// TODO: consider retrying if the error happened before we attempted
// to actually send the message.
return nil, fmt.Errorf("failed to report %q: %w", report.ID, err)
}
return report, nil
}
func (h *Handler) report(ctx context.Context, rep *api.SessionReport) error {
// Start by confirming the report - it's better to not send an email at all than to send it multiple times.
err := h.apiClient.ConfirmReport(ctx, rep.ID)
if err != nil {
return fmt.Errorf("failed to confirm: %w", err)
}
// Construct and send the message.
body, err := report.Render(rep, h.emailConfig)
if err != nil {
// This should never be happening..
return fmt.Errorf("failed to render the template: %w", err)
}
toSend := &emailclient.Email{
Subject: "Re: " + rep.Series.Title, // TODO: use the original rather than the stripped title.
To: rep.Series.Cc,
Body: body,
Cc: []string{h.emailConfig.ArchiveList},
BugID: rep.ID,
}
if rep.Moderation {
toSend.To = []string{h.emailConfig.ModerationList}
toSend.Subject = "[moderation/CI] " + toSend.Subject
} else {
if h.emailConfig.Name != "" {
toSend.Subject = fmt.Sprintf("[%s] %s", h.emailConfig.Name, toSend.Subject)
}
// We assume that email reporting is used for series received over emails.
toSend.InReplyTo = rep.Series.ExtID
toSend.To = rep.Series.Cc
toSend.Cc = append(toSend.Cc, h.emailConfig.ReportCC...)
}
msgID, err := h.sender(ctx, toSend)
if err != nil {
return fmt.Errorf("failed to send: %w", err)
}
// Senders may not always know the MessageID of the newly sent messages (that's the case of dashapi).
if msgID != "" {
// Record MessageID so that we could later trace user replies back to it.
_, err = h.apiClient.RecordReply(ctx, &api.RecordReplyReq{
// TODO: for Lore emails, set Link = lore.Link(msgID).
MessageID: msgID,
Time: time.Now(),
ReportID: rep.ID,
Reporter: h.reporter,
})
if err != nil {
return fmt.Errorf("failed to record the reply: %w", err)
}
}
return nil
}
// IncomingEmail assumes that the related report ID is already extracted and resides in msg.BugIDs.
func (h *Handler) IncomingEmail(ctx context.Context, msg *email.Email) error {
if len(msg.BugIDs) == 0 {
// Unrelated email.
return nil
}
if msg.OwnEmail && !strings.HasPrefix(msg.Subject, email.ForwardedPrefix) {
// We normally ignore our own emails, with the exception of the emails forwarded from the dashboard.
return nil
}
reportID := msg.BugIDs[0]
var reply string
for _, command := range msg.Commands {
var err error
switch command.Command {
case email.CmdUpstream:
// Reply nothing on success.
err = h.apiClient.UpstreamReport(ctx, reportID, &api.UpstreamReportReq{
User: msg.Author,
})
case email.CmdInvalid:
// Reply nothing on success.
err = h.apiClient.InvalidateReport(ctx, reportID)
default:
reply = "Unknown command"
}
if err != nil {
reply = fmt.Sprintf("Failed to process the command. Contact %s.",
h.emailConfig.SupportEmail)
}
}
if reply == "" {
return nil
}
_, err := h.sender(ctx, &emailclient.Email{
To: []string{msg.Author},
Cc: msg.Cc,
Subject: "Re: " + msg.Subject,
InReplyTo: msg.MessageID,
Body: []byte(email.FormReply(msg, reply)),
})
return err
}
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