well-goknown/nostr/nostr.go

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package nostr
import (
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"encoding/json"
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"net"
"net/http"
"strings"
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"git.minhas.io/asara/gologger"
"git.minhas.io/asara/well-goknown/config"
"github.com/jmoiron/sqlx"
)
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var (
DB *sqlx.DB
)
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type nostrUser struct {
Pubkey string `db:"pubkey"`
Relays *string `db:"relays,omitempty"`
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}
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type nostrWellKnown struct {
Names map[string]string `json:"names"`
Relays map[string][]string `json:"relays,omitempty"`
}
func GetNostrAddr(w http.ResponseWriter, r *http.Request) {
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l := gologger.Get(config.GetConfig().LogLevel).With().Str("context", "nostr").Logger()
// get query string for username
r.ParseForm()
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name := strings.ToLower(r.FormValue("name"))
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// normalize domain
domain, _, err := net.SplitHostPort(r.Host)
if err != nil {
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l.Debug().Msgf("unable to split hostname: %s", r.Host)
domain = r.Host
return
}
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// get owner id for nip05 request
var uid int
DB.QueryRow("SELECT owner_id FROM nip05s WHERE name=$1 AND domain=$2", name, domain).Scan(&uid)
// get the pubkey and relays associated with the nip05
user := nostrUser{}
err = DB.QueryRow("SELECT pubkey, relays FROM users WHERE id=$1", uid).Scan(&user.Pubkey, &user.Relays)
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if err != nil {
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l.Error().Msgf("unable to get user for uid %v: %s", uid, err.Error())
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return
}
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// get all names associated with the pubkey
names := []string{}
err = DB.Select(&names, "SELECT nip05s.name FROM nip05s JOIN users ON nip05s.owner_id = users.id WHERE nip05s.owner_id = $1", uid)
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if err != nil {
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l.Error().Msgf("unable to get user for uid %v: %s", uid, err.Error())
return
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}
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// map of names
n := make(map[string]string)
for _, name := range names {
n[name] = user.Pubkey
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}
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// map of relays
s := make(map[string][]string)
if user.Relays != nil {
if strings.Contains(*user.Relays, ",") {
s[user.Pubkey] = strings.Split(*user.Relays, ",")
} else {
s[user.Pubkey] = []string{*user.Relays}
}
}
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ret := nostrWellKnown{
Names: n,
Relays: s,
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}
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j, err := json.Marshal(ret)
if err != nil {
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l.Error().Msg(err.Error())
return
}
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w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(j)
return
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}