add support for encrypting to multiple recipients / decrypting with multiple identities
- config options for reading identities/recipients from file - command line flags for both files, and identities/recipients straight from the command line - some cleanup and better help strings
This commit is contained in:
parent
f4df6f35eb
commit
da5adc9828
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@ -7,6 +7,7 @@ import (
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"strings"
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"time"
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"filippo.io/age"
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"git.burning.moe/celediel/agedit/internal/config"
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"git.burning.moe/celediel/agedit/pkg/editor"
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"git.burning.moe/celediel/agedit/pkg/encrypt"
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@ -46,26 +47,78 @@ var (
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}}
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flags = []cli.Flag{
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&cli.StringFlag{
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&cli.StringSliceFlag{
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Name: "identity",
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Usage: "age identity file to decrypt with",
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Usage: "age `identity` (or identities) to decrypt with",
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Aliases: []string{"I"},
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Action: func(ctx *cli.Context, inputs []string) error {
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for _, input := range inputs {
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id, err := age.ParseX25519Identity(input)
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if err != nil {
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return err
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}
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identities = append(identities, id)
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}
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return nil
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},
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},
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&cli.PathFlag{ // I dunno why PathFlag exists because cli.Path is just string
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Name: "identity-file",
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Usage: "read identity from `FILE`",
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Aliases: []string{"i"},
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Action: func(ctx *cli.Context, identity_file string) error {
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Action: func(ctx *cli.Context, identity_file cli.Path) error {
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if identity_file != "" {
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cfg.IdentityFile = identity_file
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}
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return nil
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},
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},
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&cli.StringSliceFlag{
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Name: "recipient",
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Usage: "age `recipient`s to encrypt to",
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Aliases: []string{"R"},
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Action: func(ctx *cli.Context, inputs []string) error {
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for _, input := range inputs {
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logger.Debugf("parsing public key from string %s", input)
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r, err := age.ParseX25519Recipient(input)
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if err != nil {
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return err
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}
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recipients = append(recipients, r)
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}
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return nil
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},
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},
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&cli.PathFlag{
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Name: "recipient-file",
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Usage: "read recipients from `FILE`",
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Aliases: []string{"r"},
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Action: func(ctx *cli.Context, recipient_file cli.Path) error {
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if recipient_file != "" {
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cfg.RecipientFile = recipient_file
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}
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return nil
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},
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},
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&cli.StringFlag{
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Name: "out",
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Usage: "write to this file instead of the input file",
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Usage: "write to `FILE` instead of the input file",
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Aliases: []string{"o"},
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Action: func(ctx *cli.Context, out string) error {
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output_file = out
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return nil
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},
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},
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&cli.StringFlag{
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Name: "editor",
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Usage: "edit with specified `EDITOR` instead of $EDITOR",
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Aliases: []string{"e"},
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Action: func(ctx *cli.Context, editor string) error {
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cfg.Editor = editor
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return nil
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},
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},
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&cli.StringSliceFlag{
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Name: "editor-args",
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Usage: "`arg`uments to send to the editor",
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@ -76,7 +129,7 @@ var (
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},
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&cli.BoolFlag{
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Name: "force",
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Usage: "Re-encrypt the file even if no changes have been made.",
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Usage: "re-encrypt the file even if no changes have been made.",
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Aliases: []string{"f"},
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Action: func(ctx *cli.Context, b bool) error {
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force_overwrite = b
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@ -84,10 +137,9 @@ var (
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},
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},
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&cli.StringFlag{
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Name: "log",
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Usage: "log level",
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Value: "warn",
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Aliases: []string{"l"},
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Name: "log",
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Usage: "log `level`",
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Value: "warn",
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Action: func(ctx *cli.Context, s string) error {
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if lvl, err := log.ParseLevel(s); err == nil {
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logger.SetLevel(lvl)
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@ -101,15 +153,6 @@ var (
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return nil
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},
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},
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&cli.StringFlag{
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Name: "editor",
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Usage: "specify the editor to use",
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Aliases: []string{"e"},
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Action: func(ctx *cli.Context, editor string) error {
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cfg.Editor = editor
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return nil
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},
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},
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}
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)
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@ -120,7 +163,7 @@ func before(ctx *cli.Context) error {
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return fmt.Errorf("no file to edit, use " + name + " -h for help")
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}
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// do some setup
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// set some defaults
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cfg = config.Defaults
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cfg.Editor = env.GetEditor()
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cfg_dir := env.GetConfigDir(name)
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@ -150,6 +193,7 @@ func before(ctx *cli.Context) error {
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// action does the actual thing
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func action(ctx *cli.Context) error {
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// make sure input file exists
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if _, err := os.Stat(input_file); os.IsNotExist(err) {
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return err
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}
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@ -159,18 +203,55 @@ func action(ctx *cli.Context) error {
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logger.Debug("out file not specified, using input", "outfile", output_file)
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}
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if _, err := os.Stat(cfg.IdentityFile); os.IsNotExist(err) {
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return fmt.Errorf("identity file unset, use -i or set one in the config file")
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// read from identity file if exists and no identities have been supplied
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if len(identities) == 0 {
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if _, err := os.Stat(cfg.IdentityFile); os.IsNotExist(err) {
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return fmt.Errorf("identity file unset and no identities supplied, use -i to specify an idenitity file or set one in the config file, or use -I to specify an age private key")
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} else {
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f, err := os.Open(cfg.IdentityFile)
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if err != nil {
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return fmt.Errorf("couldn't open identity file: %v", err)
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}
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if ids, err := age.ParseIdentities(f); err != nil {
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return fmt.Errorf("couldn't parse identities: %v", err)
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} else {
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identities = append(identities, ids...)
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}
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}
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}
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if id, err := encrypt.ReadIdentityFromFile(cfg.IdentityFile); err != nil {
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return err
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} else {
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identity = id
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// read from recipient file if it exists and no recipients have been supplied
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if len(recipients) == 0 {
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if _, err := os.Stat(cfg.RecipientFile); os.IsNotExist(err) {
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return fmt.Errorf("recipient file doesn't exist")
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} else {
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f, err := os.Open(cfg.RecipientFile)
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if err != nil {
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return fmt.Errorf("couldn't open recipient file: %v", err)
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}
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if rs, err := age.ParseRecipients(f); err != nil {
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return fmt.Errorf("couldn't parse recipients: %v", err)
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} else {
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recipients = append(recipients, rs...)
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}
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}
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}
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logger.Debug("read identity from file", "id", identity.Recipient())
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decrypted, err := encrypt.Decrypt(input_file, identity)
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// get recipients from specified identities
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for _, id := range identities {
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// TODO: figure out how age actually intends for
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// TODO: a recpient to be retrieved from an age.Identity
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// TODO: beccause this is stupid and I hate it
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actual_id, err := age.ParseX25519Identity(fmt.Sprint(id))
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if err != nil {
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return fmt.Errorf("couldn't get recipient? %v", err)
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}
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recipients = append(recipients, actual_id.Recipient())
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}
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// try to decrypt the file
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decrypted, err := encrypt.Decrypt(input_file, identities...)
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if err != nil {
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return err
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}
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@ -189,7 +270,8 @@ func action(ctx *cli.Context) error {
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return nil
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}
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err = encrypt.Encrypt(edited, output_file, identity)
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// actually re-encrypt the data
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err = encrypt.Encrypt(edited, output_file, recipients...)
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if err != nil {
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return err
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}
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@ -4,6 +4,7 @@ import (
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"os"
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"git.burning.moe/celediel/agedit/internal/config"
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"git.burning.moe/celediel/agedit/pkg/editor"
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"filippo.io/age"
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"github.com/charmbracelet/log"
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@ -11,26 +12,27 @@ import (
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)
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var (
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identity *age.X25519Identity
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logger *log.Logger
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cfg config.Config
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configFile string
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identities []age.Identity
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recipients []age.Recipient
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logger *log.Logger
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cfg config.Config
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edt editor.Editor
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configFile string
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input_file, output_file string
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force_overwrite bool
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)
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func main() {
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app := &cli.App{
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Name: name,
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Usage: usage,
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Version: version,
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Authors: authors,
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Flags: flags,
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Before: before,
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Action: action,
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CustomAppHelpTemplate: help_template,
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Name: name,
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Usage: usage,
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Version: version,
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Authors: authors,
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Flags: flags,
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Before: before,
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Action: action,
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CustomAppHelpTemplate: help_template,
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UseShortOptionHandling: true,
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}
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if err := app.Run(os.Args); err != nil {
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@ -11,18 +11,18 @@ import (
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)
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// Encrypt encrypts bytes into filename
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func Encrypt(data []byte, filename string, identity *age.X25519Identity) error {
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func Encrypt(data []byte, filename string, recipients ...age.Recipient) error {
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var (
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w io.WriteCloser
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out = &bytes.Buffer{}
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err error
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)
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if identity == nil {
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return errors.New("nil identity??")
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if len(recipients) == 0 {
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return errors.New("no recepients? who's trying to encrypt?")
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}
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if w, err = age.Encrypt(out, identity.Recipient()); err != nil {
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if w, err = age.Encrypt(out, recipients...); err != nil {
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return err
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}
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@ -40,7 +40,7 @@ func Encrypt(data []byte, filename string, identity *age.X25519Identity) error {
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}
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// Decrypt decrypts bytes from filename
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func Decrypt(filename string, identity *age.X25519Identity) ([]byte, error) {
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func Decrypt(filename string, identities ...age.Identity) ([]byte, error) {
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var (
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f *os.File
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r io.Reader
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@ -51,7 +51,7 @@ func Decrypt(filename string, identity *age.X25519Identity) ([]byte, error) {
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return nil, err
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}
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if r, err = age.Decrypt(f, identity); err != nil {
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if r, err = age.Decrypt(f, identities...); err != nil {
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return nil, err
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}
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@ -5,29 +5,29 @@ import (
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"os"
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"testing"
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"filippo.io/age"
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"git.burning.moe/celediel/agedit/pkg/tmpfile"
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)
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var generator = tmpfile.NewGenerator("test_", ".txt", 18)
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var (
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generator = tmpfile.NewGenerator("test_", ".txt", 18)
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strings_to_write = []string{
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"hello world",
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"hola mundo",
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"مرحبا بالعالم",
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"こんにちは世界",
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"你好世界",
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"Γειά σου Κόσμε",
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"Привіт Світ",
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"Բարեւ աշխարհ",
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"გამარჯობა მსოფლიო",
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"अभिवादन पृथ्वी",
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}
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)
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// TestEncryptionDecryption writes a string to a file, encrypts it, then decrypts it, and reads the string.
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func TestEncryptionDecryption(t *testing.T) {
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var (
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strings_to_write = []string{
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"hello world",
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"hola mundo",
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"مرحبا بالعالم",
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"こんにちは世界",
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"你好世界",
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"Γειά σου Κόσμε",
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"Привіт Світ",
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"Բարեւ աշխարհ",
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"გამარჯობა მსოფლიო",
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"अभिवादन पृथ्वी",
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}
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)
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id, err := NewIdentity()
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id, err := age.GenerateX25519Identity()
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if err != nil {
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t.Fatal(err)
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}
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@ -49,7 +49,7 @@ func TestEncryptionDecryption(t *testing.T) {
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t.Fatal(err)
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}
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if err = Encrypt(b, encrypted_outname, id); err != nil {
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if err = Encrypt(b, encrypted_outname, id.Recipient()); err != nil {
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t.Fatal(err)
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}
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@ -73,6 +73,73 @@ func TestEncryptionDecryption(t *testing.T) {
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}
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}
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func TestMultipleIdentities(t *testing.T) {
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var (
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identities []age.Identity
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recipients []age.Recipient
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)
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for i := 0; i <= 10; i++ {
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id, err := age.GenerateX25519Identity()
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if err != nil {
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t.Fatalf("age broke: %v", err)
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}
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identities = append(identities, id)
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recipients = append(recipients, id.Recipient())
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}
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for _, str := range strings_to_write {
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var (
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outname string = generator.GenerateFullPath()
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encrypted_outname string = outname + ".age"
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b []byte
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err error
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)
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t.Run("testing writing "+str, func(t *testing.T) {
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if err = os.WriteFile(outname, []byte(str), fs.FileMode(0600)); err != nil {
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t.Fatal(err)
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}
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if b, err = os.ReadFile(outname); err != nil {
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t.Fatal(err)
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}
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if err = Encrypt(b, encrypted_outname, recipients...); err != nil {
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t.Fatal(err)
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}
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// try decrypting with each identity
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for _, id := range identities {
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if b, err = Decrypt(encrypted_outname, id); err != nil {
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t.Fatal(err)
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}
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if string(b) != str {
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t.Fatal(string(b) + " isn't the same as " + str)
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}
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}
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// then all of them because why not
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if b, err = Decrypt(encrypted_outname, identities...); err != nil {
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t.Fatal(err)
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}
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if string(b) != str {
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t.Fatal(string(b) + " isn't the same as " + str)
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}
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if err = os.Remove(outname); err != nil {
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t.Fatal(err)
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}
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if err = os.Remove(encrypted_outname); err != nil {
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t.Fatal(err)
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}
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})
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}
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}
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// TestNewIdentity creats a new identity, writes it to file, then re-reads it back from the file.
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func TestNewIdentity(t *testing.T) {
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for i := 0; i <= 1000; i++ {
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