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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 lore
import (
"bytes"
"fmt"
"time"
"github.com/google/syzkaller/pkg/email"
"github.com/google/syzkaller/pkg/vcs"
)
type EmailReader struct {
vcs.CommitShort
Read func() ([]byte, error)
}
// ReadArchive queries the parsed messages from a single LKML message archive.
func ReadArchive(repo vcs.Repo, afterCommit string, afterTime time.Time) ([]EmailReader, error) {
commits, err := repo.LatestCommits(afterCommit, afterTime)
if err != nil {
return nil, fmt.Errorf("failed to get recent commits: %w", err)
}
var ret []EmailReader
for _, iterCommit := range commits {
commit := iterCommit
ret = append(ret, EmailReader{
CommitShort: commit,
Read: func() ([]byte, error) {
return repo.Object("m", commit.Hash)
},
})
}
return ret, nil
}
type Email struct {
*email.Email
HasPatch bool
}
func (er *EmailReader) Parse(emails, domains []string) (*Email, error) {
body, err := er.Read()
if err != nil {
return nil, err
}
return emailFromRaw(body, emails, domains)
}
func emailFromRaw(body []byte, emails, domains []string) (*Email, error) {
msg, err := email.Parse(bytes.NewReader(body), emails, nil, domains)
if err != nil {
return nil, err
}
ret := &Email{Email: msg, HasPatch: msg.Patch != ""}
// Keep memory consumption low.
ret.Body = ""
ret.Patch = ""
// TODO: If emails/domains are nil, we also don't need to parse the body at all.
return ret, nil
}
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