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59 lines
1.5 KiB
59 lines
1.5 KiB
//go:build darwin
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package chromium
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import (
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"bytes"
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"crypto/sha1"
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"errors"
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"os"
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"os/exec"
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"strings"
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"golang.org/x/crypto/pbkdf2"
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"hack-browser-data/internal/item"
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"hack-browser-data/internal/log"
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)
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var (
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errWrongSecurityCommand = errors.New("wrong security command")
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errCouldNotFindInKeychain = errors.New("could not be find in keychain")
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)
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func (c *chromium) GetMasterKey() ([]byte, error) {
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var (
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cmd *exec.Cmd
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stdout, stderr bytes.Buffer
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)
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// don't need chromium key file for macOS
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defer os.Remove(item.TempChromiumKey)
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// Get the master key from the keychain
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// $ security find-generic-password -wa 'Chrome'
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cmd = exec.Command("security", "find-generic-password", "-wa", strings.TrimSpace(c.storage)) //nolint:gosec
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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err := cmd.Run()
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if err != nil {
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return nil, err
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}
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if stderr.Len() > 0 {
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if strings.Contains(stderr.String(), "could not be found") {
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return nil, errCouldNotFindInKeychain
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}
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return nil, errors.New(stderr.String())
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}
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chromeSecret := bytes.TrimSpace(stdout.Bytes())
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if chromeSecret == nil {
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return nil, errWrongSecurityCommand
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}
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chromeSalt := []byte("saltysalt")
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// @https://source.chromium.org/chromium/chromium/src/+/master:components/os_crypt/os_crypt_mac.mm;l=157
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key := pbkdf2.Key(chromeSecret, chromeSalt, 1003, 16, sha1.New)
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if key == nil {
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return nil, errWrongSecurityCommand
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}
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c.masterKey = key
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log.Infof("%s initialized master key success", c.name)
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return key, nil
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}
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