mirror of
https://github.com/Luzifer/ots.git
synced 2024-10-01 01:06:09 -04:00
99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"io/fs"
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"os"
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"path"
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"strings"
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"github.com/Luzifer/ots/pkg/client"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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const storeFileMode = 0o600 // We assume the attached file to be a secret
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var fetchCmd = &cobra.Command{
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Use: "fetch <url>",
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Short: "Retrieves a secret from the instance by its URL",
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Long: "",
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Args: cobra.ExactArgs(1),
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RunE: fetchRunE,
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}
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func init() {
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fetchCmd.Flags().String("file-dir", ".", "Where to put files attached to the secret")
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rootCmd.AddCommand(fetchCmd)
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}
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func checkDirWritable(dir string) error {
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tmpFile := path.Join(dir, ".ots-cli.tmp")
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if err := os.WriteFile(tmpFile, []byte(""), storeFileMode); err != nil {
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return fmt.Errorf("writing tmp-file: %w", err)
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}
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defer os.Remove(tmpFile) //nolint:errcheck // We don't really care
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return nil
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}
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func fetchRunE(cmd *cobra.Command, args []string) error {
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cmd.SilenceUsage = true
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fileDir, err := cmd.Flags().GetString("file-dir")
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if err != nil {
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return fmt.Errorf("getting file-dir parameter: %w", err)
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}
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// First lets check whether we potentially can write files
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if err := checkDirWritable(fileDir); err != nil {
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return fmt.Errorf("checking for directory write: %w", err)
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}
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logrus.Info("fetching secret...")
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secret, err := client.Fetch(args[0])
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if err != nil {
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return fmt.Errorf("fetching secret")
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}
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for _, f := range secret.Attachments {
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logrus.WithField("file", f.Name).Info("storing file...")
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if err = storeAttachment(fileDir, f); err != nil {
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return fmt.Errorf("saving file to disk: %w", err)
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}
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}
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fmt.Println(secret.Secret) //nolint:forbidigo // Output intended for STDOUT
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return nil
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}
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func storeAttachment(dir string, f client.SecretAttachment) error {
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// First lets find a free file name to save the file as
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var (
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fileNameFragments = strings.SplitN(f.Name, ".", 2) //nolint:gomnd
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i int
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storeName = path.Join(dir, f.Name)
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storeNameTpl string
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)
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if len(fileNameFragments) == 1 {
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storeNameTpl = fmt.Sprintf("%s (%%d)", fileNameFragments[0])
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} else {
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storeNameTpl = fmt.Sprintf("%s (%%d).%s", fileNameFragments[0], fileNameFragments[1])
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}
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for _, err := os.Stat(storeName); !errors.Is(err, fs.ErrNotExist); _, err = os.Stat(storeName) {
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i++
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storeName = fmt.Sprintf(storeNameTpl, i)
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}
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// So we finally found a filename we can use
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if err := os.WriteFile(storeName, f.Content, storeFileMode); err != nil {
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return fmt.Errorf("writing file: %w", err)
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}
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return nil
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}
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