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475 lines (429 loc) · 12.9 KB
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package main
import (
"context"
stdjson "encoding/json"
"fmt"
"iter"
"slices"
"strings"
"fiatjaf.com/nostr"
"fiatjaf.com/nostr/nip19"
"fiatjaf.com/nostr/schema"
"github.com/urfave/cli/v3"
)
func parseProfilePointerInput(target string) (nostr.ProfilePointer, bool) {
var profilePtr nostr.ProfilePointer
if err := stdjson.Unmarshal([]byte(target), &profilePtr); err != nil || profilePtr.PublicKey == nostr.ZeroPK {
return nostr.ProfilePointer{}, false
}
return profilePtr, true
}
func parseEventPointerInput(target string) (nostr.EventPointer, bool) {
var eventPtr nostr.EventPointer
if err := stdjson.Unmarshal([]byte(target), &eventPtr); err != nil || eventPtr.ID == nostr.ZeroID {
return nostr.EventPointer{}, false
}
return eventPtr, true
}
func parseEntityPointerInput(target string) (nostr.EntityPointer, bool) {
var entityPtr nostr.EntityPointer
if err := stdjson.Unmarshal([]byte(target), &entityPtr); err != nil || entityPtr.PublicKey == nostr.ZeroPK || entityPtr.Kind == 0 {
return nostr.EntityPointer{}, false
}
return entityPtr, true
}
// parseEventInput parses a full event from JSON. Events are distinguished from
// pointer inputs by the presence of the "tags" field.
func parseEventInput(target string) (nostr.Event, bool, error) {
var fields map[string]stdjson.RawMessage
if err := stdjson.Unmarshal([]byte(target), &fields); err != nil {
return nostr.Event{}, false, nil
}
if _, ok := fields["tags"]; !ok {
return nostr.Event{}, false, nil
}
var evt nostr.Event
if err := stdjson.Unmarshal([]byte(target), &evt); err != nil {
return nostr.Event{}, true, fmt.Errorf("invalid event JSON: %w", err)
}
return evt, true, nil
}
// eventRelayHints appends valid relay URLs found in the event's "r" tags.
func eventRelayHints(evt nostr.Event, relays []string) []string {
for tag := range evt.Tags.FindAll("r") {
relay := nostr.NormalizeURL(tag[1])
if nostr.IsValidRelayURL(relay) {
relays = nostr.AppendUnique(relays, relay)
}
}
return relays
}
func getEncodeSubcommandInput(args cli.Args, allowBlank bool) iter.Seq[string] {
if args.Len() > 0 {
return func(yield func(string) bool) {
for _, arg := range args.Slice() {
if !yield(arg) {
return
}
}
}
}
return func(yield func(string) bool) {
for jsonStr := range getJsonsOrBlank(false) {
if jsonStr == "{}" {
if allowBlank {
yield("")
}
return
}
if !yield(jsonStr) {
return
}
}
}
}
var encode = &cli.Command{
Name: "encode",
Usage: "encodes notes and other stuff to nip19 entities",
Description: `example usage:
nak encode npub <pubkey-hex>
nak encode nprofile <pubkey-hex>
nak encode nprofile --relay <relay-url> <pubkey-hex>
nak encode nevent <event-id>
nak encode nevent --author <pubkey-hex> --relay <relay-url> --relay <other-relay> <event-id>
nak encode nsec <privkey-hex>
echo '{"pubkey":"7b225d32d3edb978dba1adfd9440105646babbabbda181ea383f74ba53c3be19","relays":["wss://nada.zero"]}' | nak encode
echo '{
"id":"7b225d32d3edb978dba1adfd9440105646babbabbda181ea383f74ba53c3be19",
"relays":["wss://nada.zero"],
"author":"ebb6ff85430705651b311ed51328767078fd790b14f02d22efba68d5513376bc"
} | nak encode`,
DisableSliceFlagSeparator: true,
Flags: []cli.Flag{
&cli.StringSliceFlag{
Name: "relay",
Aliases: []string{"r"},
Usage: "attach relay hints to the code",
},
},
Action: func(ctx context.Context, c *cli.Command) error {
if c.Args().Len() == 0 && !isPiped() {
return cli.ShowSubcommandHelp(c)
}
if c.Args().Len() != 0 {
switch c.Args().First() {
case "naddr", "nevent", "npub", "nprofile", "nsec":
return nil
}
return fmt.Errorf("unknown encode target '%s'", c.Args().First())
}
relays := c.StringSlice("relay")
if err := normalizeAndValidateRelayURLs(relays); err != nil {
return err
}
hasStdin := false
for jsonStr := range getJsonsOrBlank(false) {
if jsonStr == "{}" {
hasStdin = false
continue
} else {
hasStdin = true
}
if evt, isEvent, err := parseEventInput(jsonStr); err != nil {
ctx = lineProcessingError(ctx, "%s", err)
continue
} else if isEvent {
ref := eventReference(evt, eventRelayHints(evt, slices.Clone(relays)), false)
if evt.ID == nostr.ZeroID && strings.HasPrefix(ref, "nevent1") {
ctx = lineProcessingError(ctx, "event has no id")
continue
}
stdout(ref)
continue
}
if eventPtr, ok := parseEventPointerInput(jsonStr); ok {
stdout(nip19.EncodeNevent(eventPtr.ID, nostr.AppendUnique(relays, eventPtr.Relays...), eventPtr.Author))
continue
}
if entityPtr, ok := parseEntityPointerInput(jsonStr); ok {
stdout(nip19.EncodeNaddr(entityPtr.PublicKey, entityPtr.Kind, entityPtr.Identifier, nostr.AppendUnique(relays, entityPtr.Relays...)))
continue
}
if profilePtr, ok := parseProfilePointerInput(jsonStr); ok {
stdout(nip19.EncodeNprofile(profilePtr.PublicKey, nostr.AppendUnique(relays, profilePtr.Relays...)))
continue
}
ctx = lineProcessingError(ctx, "couldn't decode JSON '%s'", jsonStr)
}
if !hasStdin {
return nil
}
exitIfLineProcessingError(ctx)
return nil
},
Commands: []*cli.Command{
{
Name: "npub",
Usage: "encode a hex public key into bech32 'npub' format",
DisableSliceFlagSeparator: true,
Action: func(ctx context.Context, c *cli.Command) error {
for target := range getStdinLinesOrArguments(c.Args()) {
pk, err := nostr.PubKeyFromHexCheap(target)
if err != nil {
ctx = lineProcessingError(ctx, "invalid public key '%s': %s", target, err)
continue
}
stdout(nip19.EncodeNpub(pk))
}
exitIfLineProcessingError(ctx)
return nil
},
},
{
Name: "nsec",
Usage: "encode a hex private key into bech32 'nsec' format",
DisableSliceFlagSeparator: true,
Action: func(ctx context.Context, c *cli.Command) error {
for target := range getStdinLinesOrArguments(c.Args()) {
sk, err := nostr.SecretKeyFromHex(target)
if err != nil {
ctx = lineProcessingError(ctx, "invalid private key '%s': %s", target, err)
continue
}
stdout(nip19.EncodeNsec(sk))
}
exitIfLineProcessingError(ctx)
return nil
},
},
{
Name: "nprofile",
Usage: "generate profile codes with attached relay information",
Flags: []cli.Flag{
&cli.StringSliceFlag{
Name: "relay",
Aliases: []string{"r"},
Usage: "attach relay hints to the code",
},
&BoolIntFlag{
Name: "outbox",
Usage: "automatically appends outbox relays to the code",
Value: 3,
},
},
DisableSliceFlagSeparator: true,
Action: func(ctx context.Context, c *cli.Command) error {
for target := range getEncodeSubcommandInput(c.Args(), false) {
relays := c.StringSlice("relay")
pk := nostr.ZeroPK
if profilePtr, ok := parseProfilePointerInput(target); ok {
pk = profilePtr.PublicKey
relays = nostr.AppendUnique(relays, profilePtr.Relays...)
} else {
var err error
pk, err = nostr.PubKeyFromHexCheap(target)
if err != nil {
ctx = lineProcessingError(ctx, "invalid public key '%s': %s", target, err)
continue
}
}
if getBoolInt(c, "outbox") > 0 {
for _, r := range sys.FetchOutboxRelays(ctx, pk, int(getBoolInt(c, "outbox"))) {
relays = nostr.AppendUnique(relays, r)
}
}
if err := normalizeAndValidateRelayURLs(relays); err != nil {
return err
}
stdout(nip19.EncodeNprofile(pk, relays))
}
exitIfLineProcessingError(ctx)
return nil
},
},
{
Name: "nevent",
Usage: "generate event codes with optionally attached relay information",
Flags: []cli.Flag{
&PubKeyFlag{
Name: "author",
Aliases: []string{"a"},
Usage: "attach an author pubkey as a hint to the nevent code",
},
&cli.StringSliceFlag{
Name: "relay",
Aliases: []string{"r"},
Usage: "attach relay hints to the code",
},
&BoolIntFlag{
Name: "outbox",
Usage: "automatically appends outbox relays to the code",
Value: 3,
},
},
DisableSliceFlagSeparator: true,
Action: func(ctx context.Context, c *cli.Command) error {
for target := range getEncodeSubcommandInput(c.Args(), false) {
id := nostr.ZeroID
author := getPubKey(c, "author")
relays := c.StringSlice("relay")
if evt, isEvent, err := parseEventInput(target); err != nil {
ctx = lineProcessingError(ctx, "%s", err)
continue
} else if isEvent {
if evt.ID == nostr.ZeroID {
ctx = lineProcessingError(ctx, "event has no id")
continue
}
id = evt.ID
relays = eventRelayHints(evt, relays)
if author == nostr.ZeroPK {
author = evt.PubKey
}
} else if eventPtr, ok := parseEventPointerInput(target); ok {
id = eventPtr.ID
relays = nostr.AppendUnique(relays, eventPtr.Relays...)
if author == nostr.ZeroPK {
author = eventPtr.Author
}
} else {
var err error
id, err = parseEventID(target)
if err != nil {
ctx = lineProcessingError(ctx, "invalid event id: %s", target)
continue
}
}
if getBoolInt(c, "outbox") > 0 && author != nostr.ZeroPK {
for _, r := range sys.FetchOutboxRelays(ctx, author, int(getBoolInt(c, "outbox"))) {
relays = nostr.AppendUnique(relays, r)
}
}
if err := normalizeAndValidateRelayURLs(relays); err != nil {
return err
}
stdout(nip19.EncodeNevent(id, relays, author))
}
exitIfLineProcessingError(ctx)
return nil
},
},
{
Name: "naddr",
Usage: "generate codes for addressable events",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "identifier",
Aliases: []string{"d"},
Usage: "the \"d\" tag identifier of this replaceable event -- can also be read from stdin",
},
&PubKeyFlag{
Name: "pubkey",
Usage: "pubkey of the naddr author",
Aliases: []string{"author", "a", "p"},
},
&KindFlag{
Name: "kind",
Aliases: []string{"k"},
Usage: "kind of referred replaceable event",
},
&cli.StringSliceFlag{
Name: "relay",
Aliases: []string{"r"},
Usage: "attach relay hints to the code",
},
&BoolIntFlag{
Name: "outbox",
Usage: "automatically appends outbox relays to the code",
Value: 3,
},
// hidden
&cli.StringFlag{
Name: "schema",
Usage: "url to download the YAML schema from, or path to the file",
Value: schema.DefaultSchemaURL,
TakesFile: true,
Destination: &schemaURI,
Hidden: true,
},
},
DisableSliceFlagSeparator: true,
Action: func(ctx context.Context, c *cli.Command) error {
for target := range getEncodeSubcommandInput(c.Args(), true) {
pubkey := getPubKey(c, "pubkey")
kind := getKind(c, "kind")
kindSet := c.IsSet("kind")
d := c.String("identifier")
relays := c.StringSlice("relay")
if evt, isEvent, err := parseEventInput(target); err != nil {
ctx = lineProcessingError(ctx, "%s", err)
continue
} else if isEvent {
if pubkey == nostr.ZeroPK {
pubkey = evt.PubKey
}
relays = eventRelayHints(evt, relays)
if !kindSet {
kind = evt.Kind
kindSet = true
}
if !c.IsSet("identifier") {
if evt.Kind.IsAddressable() {
d = evt.Tags.GetD()
} else {
d = ""
}
}
} else if entityPtr, ok := parseEntityPointerInput(target); ok {
relays = nostr.AppendUnique(relays, entityPtr.Relays...)
if pubkey == nostr.ZeroPK {
pubkey = entityPtr.PublicKey
}
if !kindSet {
kind = entityPtr.Kind
kindSet = true
}
if !c.IsSet("identifier") {
d = entityPtr.Identifier
}
} else if target != "" {
d = target
}
if pubkey == nostr.ZeroPK {
ctx = lineProcessingError(ctx, "pubkey must be set")
continue
}
if !kindSet {
ctx = lineProcessingError(ctx, "kind must be set")
continue
}
if kind.IsAddressable() {
if d == "" {
ctx = lineProcessingError(ctx, "\"d\" tag identifier must be set for addressable events")
continue
}
} else if kind.IsReplaceable() {
if d != "" {
ctx = lineProcessingError(ctx, "\"d\" tag identifier must not be set for replaceable events")
continue
}
} else {
ctx = lineProcessingError(ctx, "can only encode replaceable events")
continue
}
if getBoolInt(c, "outbox") > 0 {
for _, r := range sys.FetchOutboxRelays(ctx, pubkey, int(getBoolInt(c, "outbox"))) {
relays = nostr.AppendUnique(relays, r)
}
}
if err := normalizeAndValidateRelayURLs(relays); err != nil {
return err
}
stdout(nip19.EncodeNaddr(pubkey, nostr.Kind(kind), d, relays))
}
exitIfLineProcessingError(ctx)
return nil
},
},
},
}