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- //go:build !noselfupdate
- package selfupdate
- import (
- "bytes"
- "context"
- "errors"
- "fmt"
- "strings"
- "github.com/ProtonMail/go-crypto/openpgp"
- "github.com/ProtonMail/go-crypto/openpgp/clearsign"
- "github.com/rclone/rclone/fs"
- )
- var ncwPublicKeyPGP = `-----BEGIN PGP PUBLIC KEY BLOCK-----
- mQGiBDuy3V0RBADVQOAF5aFiCxD3t2h6iAF2WMiaMlgZ6kX2i/u7addNkzX71VU9
- 7NpI0SnsP5YWt+gEedST6OmFbtLfZWCR4KWn5XnNdjCMNhxaH6WccVqNm4ALPIqT
- 59uVjkgf8RISmmoNJ1d+2wMWjQTUfwOEmoIgH6n+2MYNUKuctBrwAACflwCg1I1Q
- O/prv/5hczdpQCs+fL87DxsD/Rt7pIXvsIOZyQWbIhSvNpGalJuMkW5Jx92UjsE9
- 1Ipo3Xr6SGRPgW9+NxAZAsiZfCX/19knAyNrN9blwL0rcPDnkhdGwK69kfjF+wq+
- QbogRGodbKhqY4v+cMNkKiemBuTQiWPkpKjifwNsD1fNjNKfDP3pJ64Yz7a4fuzV
- X1YwBACpKVuEen34lmcX6ziY4jq8rKibKBs4JjQCRO24kYoHDULVe+RS9krQWY5b
- e0foDhru4dsKccefK099G+WEzKVCKxupstWkTT/iJwajR8mIqd4AhD0wO9W3MCfV
- Ov8ykMDZ7qBWk1DHc87Ep3W1o8t8wq74ifV+HjhhWg8QAylXg7QlTmljayBDcmFp
- Zy1Xb29kIDxuaWNrQGNyYWlnLXdvb2QuY29tPoh0BBMRCAA0BQsHCgMEAxUDAgMW
- AgECF4ACGQEWIQT79zfs6firGGBL0qyTk14C/ztU+gUCZS/mXAIbIwAKCRCTk14C
- /ztU+tX+AJ9CUAnPvT4w5yRAPRfDiwWIPUqBOgCgiTelkzvUxvLWnYmpowwzKmsx
- qaSJAjMEEAEIAB0WIQTjs1jchY+zB/SBcLnLDb68XzLIHQUCZPRnNAAKCRDLDb68
- XzLIHZSAD/oCk9Z0xJfbpriphTBxFy7bWyPKF1lM1GZZaLKkktGfunf1i0Q7rhwp
- Nu+u1launlOTp6ZoY36Ce2Qa1eSxWAQdjVajw9kOHXCAewrTREOMY/mb7RVGjajo
- 0Egl8T9iD3JRyaxu2iVtbpZYuqehtGG28CaCzmtqE+EJcx1cGqAGSuuaDWRYlVX8
- KDip44GQB5Lut30vwSIoZG1CPCR6VE82u4cl3mYZUfcJkCHsiLzoeadVzb+fOd+2
- ybzBn8Y77ifGgM+dSFSHe03mFfcHPdp0QImF9HQR7XI0UMZmEJsw7c2vDrRa+kRY
- 2A4/amGn4Tahuazq8g2yqgGm3yAj49qGNarAau849lDr7R49j73ESnNVBGJ9ShzU
- 4Ls+S1A5gohZVu2s1fkE3mbAmoTfU4JCrpRydOuL9xRJk5gbL44sKeuGODNshyTP
- JzG9DmRHpLsBn59v8mg5tqSfBIGqcqBxxnYHJnkK801MkaLW2m7wDmtz6P3TW86g
- GukzfIN3/OufLjnpN3Nx376JwWDDIyif7sn6/q+ZMwGz9uLKZkAeM5c3Dh4ygpgl
- iSLoV2bZzDz0iLxKWW7QOVVdWHmlEqbTldpQ7gUEPG7mxpzVo0xd6nHncSq0M91x
- 29It4B3fATx/iJB2eardMzSsbzHiwTg0eswhYYGpSKZLgp4RShnVAbkCDQQ7st2B
- EAgAjpB0UGDf/FrWAUo9jLWKFX15J0arBZkYm+iRax8K8fLnXzS2P+9Q04sAmt2q
- CUxK9681Nd7xtPrkPrjbcACwuFyH3Cr9o2qseiVNgAHPFGKCNxLX/9PKWfmdoZTO
- VVBcNV+sOTcx382uR04WPuv9jIwXT6JbCkXPaoCMv3mLnB9VnWRYatPYCaK8TXAP
- WxZP8lrcUMjQ1GRTQ1vP9rRMp7iaXyItW1lelNFvHEII92QddeBLK7V5ng2sX/BM
- m6/AafXZMnUQX3lpWQfEBTDT4qYsZ1zIEb4gq4dqauyNYgBcZdX//8oDE+BS2Fxx
- DTccyOW0Wyt2Z6flDTfhgzd46wADBQf+MAqIgADwulmZk+e30Znj46VmnbZUB/J8
- M4WXg6X5xaOQsCCMAWybmCc4pxFIT/1c/GdCqSHDv5nKBi5QyBMMn33/kgzVRAve
- ihL6gWsNoT31Lxst457XuyRx1dwD8rzdWoP2b3etBGdu0P7vnOoqRmf1Y0XIoJeD
- k/o8U901hG2VAo5zAVH2YdEtSZqlBIAzxjakKAAtnsZWIpBxrz9NPVOBmT18kxlg
- Z7P4iU4/FMnGOfzT6/LCTj/B0hZKJCP7y7lHNP2yOabvvBsxU0ZGph1b8R6Zb1nP
- 2+LQIi8kaBs8ypy7HDx7/mWe5DoyLe4NHQ/ZE0gCEWt1mlVIwTzFBohGBBgRAgAG
- BQI7st2BAAoJEJOTXgL/O1T6YsEAoLZx0XLt4tpAC/LNwTZUrodUiOckAKC4DTRv
- EtC4nj5EImssVk/xmU3axw==
- =VUqh
- -----END PGP PUBLIC KEY BLOCK-----
- `
- func verifyHashsum(ctx context.Context, siteURL, version, archive string, hash []byte) error {
- sumsURL := fmt.Sprintf("%s/%s/SHA256SUMS", siteURL, version)
- sumsBuf, err := downloadFile(ctx, sumsURL)
- if err != nil {
- return err
- }
- fs.Debugf(nil, "downloaded hashsum list: %s", sumsURL)
- return verifyHashsumDownloaded(ctx, sumsBuf, archive, hash)
- }
- func verifyHashsumDownloaded(ctx context.Context, sumsBuf []byte, archive string, hash []byte) error {
- keyRing, err := openpgp.ReadArmoredKeyRing(strings.NewReader(ncwPublicKeyPGP))
- if err != nil {
- return fmt.Errorf("unsupported signing key: %w", err)
- }
- block, rest := clearsign.Decode(sumsBuf)
- if block == nil {
- return errors.New("invalid hashsum signature: couldn't find detached signature")
- }
- if len(rest) > 0 {
- return fmt.Errorf("invalid hashsum signature: %d bytes of unsigned data", len(rest))
- }
- _, err = openpgp.CheckDetachedSignature(keyRing, bytes.NewReader(block.Bytes), block.ArmoredSignature.Body, nil)
- if err != nil {
- return fmt.Errorf("invalid hashsum signature: %w", err)
- }
- wantHash, err := findFileHash(sumsBuf, archive)
- if err != nil {
- return err
- }
- if !bytes.Equal(hash, wantHash) {
- return fmt.Errorf("archive hash mismatch: want %02x vs got %02x", wantHash, hash)
- }
- return nil
- }
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