refactor framework interface, simplify basic and whitelisted, bring expensive on and rewrite it.

This commit is contained in:
fiatjaf 2022-07-24 16:55:59 -03:00
parent 84f7d34840
commit aa96fa0a21
28 changed files with 743 additions and 369 deletions

View File

@ -1,8 +1,8 @@
FROM golang:1.15.5
FROM golang:1.18
WORKDIR /go/src/app
COPY ./ .
RUN go get -d -v ./...
RUN go install -v ./...
RUN cd basic && make
RUN cd basic && make

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@ -1,15 +0,0 @@
package main
import (
"time"
"github.com/jmoiron/sqlx"
)
// every hour, delete all very old events
func cleanupRoutine(db *sqlx.DB) {
for {
time.Sleep(60 * time.Minute)
db.Exec(`DELETE FROM event WHERE created_at < $1`, time.Now().AddDate(0, -3, 0))
}
}

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@ -1,6 +0,0 @@
package main
func (b *BasicRelay) DeleteEvent(id string, pubkey string) error {
_, err := b.DB.Exec("DELETE FROM events WHERE id = $1 AND pubkey = $2")
return err
}

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@ -13,7 +13,7 @@ services:
condition: service_healthy
ports:
- 2700:2700
command: "./basic/relayer"
command: "./basic/relayer-basic"
postgres:
image: postgres
@ -29,4 +29,4 @@ services:
test: ["CMD-SHELL", "pg_isready -U nostr"] # database username here - nostr, should be changed if other user
interval: 10s
timeout: 5s
retries: 5
retries: 5

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@ -1,44 +1,69 @@
package main
import (
"encoding/json"
"fmt"
"time"
"github.com/fiatjaf/go-nostr"
"github.com/fiatjaf/relayer"
"github.com/jmoiron/sqlx"
"github.com/jmoiron/sqlx/reflectx"
"github.com/fiatjaf/relayer/storage/postgresql"
"github.com/kelseyhightower/envconfig"
)
type BasicRelay struct {
type Relay struct {
PostgresDatabase string `envconfig:"POSTGRESQL_DATABASE"`
DB *sqlx.DB
}
func (b *BasicRelay) Name() string {
func (r *Relay) Name() string {
return "BasicRelay"
}
func (b *BasicRelay) Init() error {
err := envconfig.Process("", b)
func (r *Relay) Storage() relayer.Storage {
return &postgresql.PostgresBackend{DatabaseURL: r.PostgresDatabase}
}
func (r *Relay) Init() error {
err := envconfig.Process("", r)
if err != nil {
return fmt.Errorf("couldn't process envconfig: %w", err)
}
if db, err := initDB(b.PostgresDatabase); err != nil {
return fmt.Errorf("failed to open database: %w", err)
} else {
db.Mapper = reflectx.NewMapperFunc("json", sqlx.NameMapper)
b.DB = db
}
// every hour, delete all very old events
go func() {
db := r.Storage().(*postgresql.PostgresBackend)
go cleanupRoutine(b.DB)
for {
time.Sleep(60 * time.Minute)
db.DB.Exec(`DELETE FROM event WHERE created_at < $1`, time.Now().AddDate(0, -3, 0)) // 3 months
}
}()
return nil
}
func main() {
var b BasicRelay
func (r *Relay) AcceptEvent(evt *nostr.Event) bool {
// block events that are too large
jsonb, _ := json.Marshal(evt)
if len(jsonb) > 10000 {
return false
}
relayer.Start(&b)
return true
}
func (r *Relay) BeforeSave(evt *nostr.Event) {
// do nothing
}
func (r *Relay) AfterSave(evt *nostr.Event) {
// delete all but the 100 most recent ones for each key
r.Storage().(*postgresql.PostgresBackend).DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND created_at < (
SELECT created_at FROM event WHERE pubkey = $1
ORDER BY created_at DESC OFFSET 100 LIMIT 1
)`, evt.PubKey, evt.Kind)
}
func main() {
relayer.Start(&Relay{})
}

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@ -1,158 +0,0 @@
package main
import (
"database/sql"
"encoding/hex"
"errors"
"fmt"
"strconv"
"strings"
"time"
"github.com/fiatjaf/go-nostr"
"github.com/rs/zerolog/log"
)
func (b *BasicRelay) QueryEvents(filter *nostr.Filter) (events []nostr.Event, err error) {
var conditions []string
var params []any
if filter == nil {
err = errors.New("filter cannot be null")
return
}
if filter.IDs != nil {
if len(filter.IDs) > 500 {
// too many ids, fail everything
return
}
likeids := make([]string, 0, len(filter.IDs))
for _, id := range filter.IDs {
// to prevent sql attack here we will check if
// these ids are valid 32byte hex
parsed, err := hex.DecodeString(id)
if err != nil || len(parsed) <= 32 {
continue
}
likeids = append(likeids, fmt.Sprintf("id LIKE '%x%%'", parsed))
}
if len(likeids) == 0 {
// ids being [] mean you won't get anything
return
}
conditions = append(conditions, "("+strings.Join(likeids, " OR ")+")")
}
if filter.Authors != nil {
if len(filter.Authors) > 500 {
// too many authors, fail everything
return
}
likekeys := make([]string, 0, len(filter.Authors))
for _, key := range filter.Authors {
// to prevent sql attack here we will check if
// these keys are valid 32byte hex
parsed, err := hex.DecodeString(key)
if err != nil || len(parsed) != 32 {
continue
}
likekeys = append(likekeys, fmt.Sprintf("pubkey LIKE '%x%%'", parsed))
}
if len(likekeys) == 0 {
// authors being [] mean you won't get anything
return
}
conditions = append(conditions, "("+strings.Join(likekeys, " OR ")+")")
}
if filter.Kinds != nil {
if len(filter.Kinds) > 10 {
// too many kinds, fail everything
return
}
if len(filter.Kinds) == 0 {
// kinds being [] mean you won't get anything
return
}
// no sql injection issues since these are ints
inkinds := make([]string, len(filter.Kinds))
for i, kind := range filter.Kinds {
inkinds[i] = strconv.Itoa(kind)
}
conditions = append(conditions, `kind IN (`+strings.Join(inkinds, ",")+`)`)
}
tagQuery := make([]string, 0, 1)
for _, values := range filter.Tags {
if len(values) == 0 {
// any tag set to [] is wrong
return
}
// add these tags to the query
tagQuery = append(tagQuery, values...)
if len(tagQuery) > 10 {
// too many tags, fail everything
return
}
}
if len(tagQuery) > 0 {
arrayBuild := make([]string, len(tagQuery))
for i, tagValue := range tagQuery {
arrayBuild[i] = "?"
params = append(params, tagValue)
}
// we use a very bad implementation in which we only check the tag values and
// ignore the tag names
conditions = append(conditions,
"tagvalues && ARRAY["+strings.Join(arrayBuild, ",")+"]")
}
if filter.Since != nil {
conditions = append(conditions, "created_at > ?")
params = append(params, filter.Since.Unix())
}
if filter.Until != nil {
conditions = append(conditions, "created_at < ?")
params = append(params, filter.Until.Unix())
}
if len(conditions) == 0 {
// fallback
conditions = append(conditions, "true")
}
query := b.DB.Rebind(`SELECT
id, pubkey, created_at, kind, tags, content, sig
FROM event WHERE ` +
strings.Join(conditions, " AND ") +
" ORDER BY created_at LIMIT 100")
rows, err := b.DB.Query(query, params...)
if err != nil && err != sql.ErrNoRows {
log.Warn().Err(err).Interface("filter", filter).Str("query", query).
Msg("failed to fetch events")
return nil, fmt.Errorf("failed to fetch events: %w", err)
}
for rows.Next() {
var evt nostr.Event
var timestamp int64
err := rows.Scan(&evt.ID, &evt.PubKey, &timestamp,
&evt.Kind, &evt.Tags, &evt.Content, &evt.Sig)
if err != nil {
return nil, fmt.Errorf("failed to scan row: %w", err)
}
evt.CreatedAt = time.Unix(timestamp, 0)
events = append(events, evt)
}
return events, nil
}

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@ -1,58 +0,0 @@
package main
import (
"encoding/json"
"errors"
"fmt"
"strings"
"time"
"github.com/fiatjaf/go-nostr"
)
func (b *BasicRelay) SaveEvent(evt *nostr.Event) error {
// disallow large contents
if len(evt.Content) > 1000 {
return errors.New("event content too large")
}
// react to different kinds of events
if evt.Kind == nostr.KindSetMetadata || evt.Kind == nostr.KindContactList || (10000 <= evt.Kind && evt.Kind < 20000) {
// delete past events from this user
b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2`, evt.PubKey, evt.Kind)
} else if evt.Kind == nostr.KindRecommendServer {
// delete past recommend_server events equal to this one
b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND content = $3`,
evt.PubKey, evt.Kind, evt.Content)
} else {
// delete all but the 100 most recent ones
b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND created_at < (
SELECT created_at FROM event WHERE pubkey = $1
ORDER BY created_at DESC OFFSET 100 LIMIT 1
)`,
evt.PubKey, evt.Kind)
}
// insert
tagsj, _ := json.Marshal(evt.Tags)
_, err := b.DB.Exec(`
INSERT INTO event (id, pubkey, created_at, kind, tags, content, sig)
VALUES ($1, $2, $3, $4, $5, $6, $7)
`, evt.ID, evt.PubKey, evt.CreatedAt.Unix(), evt.Kind, tagsj, evt.Content, evt.Sig)
if err != nil {
if strings.Index(err.Error(), "UNIQUE") != -1 {
// already exists
return nil
}
return fmt.Errorf("failed to save event %s: %w", evt.ID, err)
}
// delete ephemeral events after a minute
go func() {
time.Sleep(75 * time.Second)
b.DB.Exec("DELETE FROM event WHERE id = $1", evt.ID)
}()
return nil
}

1
expensive/.gitignore vendored Normal file
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@ -0,0 +1 @@
relayer-expensive

2
expensive/Makefile Normal file
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@ -0,0 +1,2 @@
relayer-expensive: $(shell find .. -name "*.go")
CC=$$(which musl-gcc) go build -ldflags='-s -w -linkmode external -extldflags "-static"' -o ./relayer-expensive

31
expensive/README.md Normal file
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@ -0,0 +1,31 @@
expensive-relay, a sybil-free corner of nostr
=============================================
- a nostr relay implementation based on relayer.
- uses postgres, which I think must be over version 12 since it uses generated columns.
- requires users to manually register themselves to be able to publish events and pay a fee. this should prevent spam.
- aside from that it's basically the same thing as relayer basic.
running
-------
this requires a recent CLN version with Commando.
grab a binary from the releases page and run it with the following environment variables:
POSTGRESQL_DATABASE=postgresql://...
CLN_NODE_ID=02fed8723...
CLN_HOST=127.0.0.1:9735
CLN_RUNE=...
TICKET_PRICE_SATS=500
adjust the values above accordingly.
compiling
---------
if you know Go you already know this:
go install github.com/fiatjaf/relayer/expensive
or something like that.

68
expensive/handler.go Normal file
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@ -0,0 +1,68 @@
package main
import (
"encoding/json"
"net/http"
)
func handleWebpage(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html")
w.Write([]byte(`
<meta charset=utf-8>
<title>expensive relay</title>
<h1>expensive relay</h1>
<a href="https://github.com/fiatjaf/expensive-relay">https://github.com/fiatjaf/expensive-relay</a>
<p>this is a nostr relay that only accepts events published from keys that pay a registration fee. this is an antispam measure. you can still be banned if you're spamming or doing something bad.</p>
<p>to register your nostr public key, type it below and click the button.</p>
<form>
<label>
nostr public key:
<input name=pubkey />
</label>
<button>Get Invoice</button>
</form>
<p id=message></p>
<a id=link><canvas id=qr /></a>
<code id=invoice></code>
<script src="https://cdnjs.cloudflare.com/ajax/libs/qrious/4.0.2/qrious.min.js"></script>
<script>
document.querySelector('form').addEventListener('submit', async ev => {
ev.preventDefault()
let res = await (await fetch('/invoice?pubkey=' + ev.target.pubkey.value)).text()
let { bolt11, error } = JSON.parse(res)
if (bolt11) {
invoice.innerHTML = invoice
link.href = 'lightning:' + bolt11
new QRious({
element: qr,
value: bolt11.toUpperCase(),
size: 300
});
} else {
message.innerHTML = error
}
})
</script>
<style>
body {
margin: 10px auto;
width: 800px;
max-width: 90%;
}
</style>
`))
}
func handleInvoice(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
invoice, err := generateInvoice(r.URL.Query().Get("pubkey"))
if err != nil {
json.NewEncoder(w).Encode(struct {
Error string `json:"error"`
}{err.Error()})
} else {
json.NewEncoder(w).Encode(struct {
Invoice string `json:"bolt11"`
}{invoice})
}
}

78
expensive/lightning.go Normal file
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@ -0,0 +1,78 @@
package main
import (
"encoding/json"
"errors"
"fmt"
lnsocket "github.com/jb55/lnsocket/go"
"github.com/tidwall/gjson"
)
func generateLabel(pubkey string) string { return fmt.Sprintf("relayer-expensive:ticket:%s", pubkey) }
func generateInvoice(pubkey string) (string, error) {
cln := lnsocket.LNSocket{}
cln.GenKey()
err := cln.ConnectAndInit(r.CLNHost, r.CLNNodeId)
if err != nil {
return "", err
}
defer cln.Disconnect()
// check if there is an invoice already
jparams, _ := json.Marshal(map[string]any{
"label": generateLabel(pubkey),
})
result, _ := cln.Rpc(r.CLNRune, "listinvoices", string(jparams))
if gjson.Get(result, "invoices.#").Int() == 1 {
return gjson.Get(result, "invoices.1.bolt11").String(), nil
}
// otherwise generate an invoice
jparams, _ = json.Marshal(map[string]any{
"amount_msat": r.TicketPriceSats * 1000,
"label": generateLabel(pubkey),
"description": fmt.Sprintf("%s's ticket for writing to relayer-expensive", pubkey),
})
result, err = cln.Rpc(r.CLNRune, "invoice", string(jparams))
if err != nil {
return "", err
}
resErr := gjson.Get(result, "error")
if resErr.Type != gjson.Null {
if resErr.Type == gjson.JSON {
return "", errors.New(resErr.Get("message").String())
} else if resErr.Type == gjson.String {
return "", errors.New(resErr.String())
}
return "", fmt.Errorf("Unknown commando error: '%v'", resErr)
}
invoice := gjson.Get(result, "result.bolt11")
if invoice.Type != gjson.String {
return "", fmt.Errorf("No bolt11 result found in invoice response, got %v", result)
}
return invoice.String(), nil
}
func checkInvoicePaidOk(pubkey string) bool {
cln := lnsocket.LNSocket{}
cln.GenKey()
err := cln.ConnectAndInit(r.CLNHost, r.CLNNodeId)
if err != nil {
return false
}
defer cln.Disconnect()
jparams, _ := json.Marshal(map[string]any{
"label": generateLabel(pubkey),
})
result, _ := cln.Rpc(r.CLNRune, "listinvoices", string(jparams))
return gjson.Get(result, "invoices.0.paid").String() == "paid"
}

84
expensive/main.go Normal file
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@ -0,0 +1,84 @@
package main
import (
"encoding/json"
"fmt"
"time"
"github.com/fiatjaf/go-nostr"
"github.com/fiatjaf/relayer"
"github.com/fiatjaf/relayer/storage/postgresql"
"github.com/kelseyhightower/envconfig"
)
type Relay struct {
PostgresDatabase string `envconfig:"POSTGRESQL_DATABASE"`
CLNNodeId string `envconfig:"CLN_NODE_ID"`
CLNHost string `envconfig:"CLN_HOST"`
CLNRune string `envconfig:"CLN_RUNE"`
TicketPriceSats int64 `envconfig:"TICKET_PRICE_SATS"`
}
var r = &Relay{}
func (r *Relay) Name() string {
return "ExpensiveRelay"
}
func (r *Relay) Storage() relayer.Storage {
return &postgresql.PostgresBackend{DatabaseURL: r.PostgresDatabase}
}
func (r *Relay) Init() error {
err := envconfig.Process("", r)
if err != nil {
return fmt.Errorf("couldn't process envconfig: %w", err)
}
// every hour, delete all very old events
go func() {
db := r.Storage().(*postgresql.PostgresBackend)
for {
time.Sleep(60 * time.Minute)
db.DB.Exec(`DELETE FROM event WHERE created_at < $1`, time.Now().AddDate(0, -6, 0)) // 6 months
}
}()
// special handlers
relayer.Router.Path("/").HandlerFunc(handleWebpage)
relayer.Router.Path("/invoice").HandlerFunc(handleInvoice)
return nil
}
func (r *Relay) AcceptEvent(evt *nostr.Event) bool {
// only accept they have a good preimage for a paid invoice for their public key
if !checkInvoicePaidOk(evt.PubKey) {
return false
}
// block events that are too large
jsonb, _ := json.Marshal(evt)
if len(jsonb) > 100000 {
return false
}
return true
}
func (r *Relay) BeforeSave(evt *nostr.Event) {
// do nothing
}
func (r *Relay) AfterSave(evt *nostr.Event) {
// delete all but the 1000 most recent ones for each key
r.Storage().(*postgresql.PostgresBackend).DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND created_at < (
SELECT created_at FROM event WHERE pubkey = $1
ORDER BY created_at DESC OFFSET 1000 LIMIT 1
)`, evt.PubKey, evt.Kind)
}
func main() {
relayer.Start(r)
}

37
go.mod
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@ -6,17 +6,52 @@ require (
github.com/fiatjaf/go-nostr v0.7.3
github.com/gorilla/mux v1.8.0
github.com/gorilla/websocket v1.4.2
github.com/jb55/lnsocket/go v0.0.0-20220315220004-e1e6b88a0bfc
github.com/jmoiron/sqlx v1.3.1
github.com/kelseyhightower/envconfig v1.4.0
github.com/lib/pq v1.8.0
github.com/rs/cors v1.7.0
github.com/rs/zerolog v1.20.0
github.com/tidwall/gjson v1.14.1
)
require (
github.com/aead/siphash v1.0.1 // indirect
github.com/btcsuite/btcd v0.23.1 // indirect
github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
github.com/btcsuite/btcd/btcutil v1.1.1 // indirect
github.com/btcsuite/btcd/btcutil/psbt v1.1.4 // indirect
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1 // indirect
github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
github.com/btcsuite/btcwallet v0.15.1 // indirect
github.com/btcsuite/btcwallet/wallet/txauthor v1.2.3 // indirect
github.com/btcsuite/btcwallet/wallet/txrules v1.2.0 // indirect
github.com/btcsuite/btcwallet/wallet/txsizes v1.1.0 // indirect
github.com/btcsuite/btcwallet/walletdb v1.4.0 // indirect
github.com/btcsuite/btcwallet/wtxmgr v1.5.0 // indirect
github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd // indirect
github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/decred/dcrd/crypto/blake256 v1.0.0 // indirect
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
github.com/decred/dcrd/lru v1.0.0 // indirect
github.com/go-errors/errors v1.0.1 // indirect
github.com/kkdai/bstream v1.0.0 // indirect
github.com/lightninglabs/gozmq v0.0.0-20191113021534-d20a764486bf // indirect
github.com/lightninglabs/neutrino v0.14.2 // indirect
github.com/lightningnetwork/lnd v0.15.0-beta // indirect
github.com/lightningnetwork/lnd/clock v1.1.0 // indirect
github.com/lightningnetwork/lnd/queue v1.1.0 // indirect
github.com/lightningnetwork/lnd/ticker v1.1.0 // indirect
github.com/lightningnetwork/lnd/tlv v1.0.3 // indirect
github.com/lightningnetwork/lnd/tor v1.0.1 // indirect
github.com/miekg/dns v1.1.43 // indirect
github.com/tidwall/match v1.1.1 // indirect
github.com/tidwall/pretty v1.2.0 // indirect
github.com/valyala/fastjson v1.6.3 // indirect
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f // indirect
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 // indirect
)
replace github.com/jb55/lnsocket/go => /home/fiatjaf/comp/lnsocket/go

240
go.sum
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@ -1,24 +1,69 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:kGUqhHd//musdITWjFvNTHn90WG9bMLBEPQZ17Cmlpw=
github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec/go.mod h1:CD8UlnlLDiqb36L110uqiP2iSflVjx9g/3U9hCI4q2U=
github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da h1:KjTM2ks9d14ZYCvmHS9iAKVt9AyzRSqNU1qabPih5BY=
github.com/aead/siphash v1.0.1 h1:FwHfE/T45KPKYuuSAKyyvE+oPWcaQ+CUmFW0bPlM+kg=
github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
github.com/andybalholm/brotli v1.0.3 h1:fpcw+r1N1h0Poc1F/pHbW40cUm/lMEQslZtCkBQ0UnM=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
github.com/btcsuite/btcd v0.22.0-beta.0.20220111032746-97732e52810c/go.mod h1:tjmYdS6MLJ5/s0Fj4DbLgSbDHbEqLJrtnHecBFkdz5M=
github.com/btcsuite/btcd v0.22.0-beta.0.20220204213055-eaf0459ff879/go.mod h1:osu7EoKiL36UThEgzYPqdRaxeo0NU8VoXqgcnwpey0g=
github.com/btcsuite/btcd v0.22.0-beta.0.20220207191057-4dc4ff7963b4/go.mod h1:7alexyj/lHlOtr2PJK7L/+HDJZpcGDn/pAU98r7DY08=
github.com/btcsuite/btcd v0.22.0-beta.0.20220316175102-8d5c75c28923/go.mod h1:taIcYprAW2g6Z9S0gGUxyR+zDwimyDMK5ePOX+iJ2ds=
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github.com/btcsuite/btcwallet v0.15.1 h1:SKfh/l2Bgz9sJwHZvfiVbZ8Pl3N/8fFcWWXzsAPz9GU=
github.com/btcsuite/btcwallet v0.15.1/go.mod h1:7OFsQ8ypiRwmr67hE0z98uXgJgXGAihE79jCib9x6ag=
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github.com/cmars/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:P13beTBKr5Q18lJe1rIoLUqjM+CB1zYrRg44ZqGuQSA=
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@ -27,89 +72,280 @@ github.com/decred/dcrd/crypto/blake256 v1.0.0 h1:/8DMNYp9SGi5f0w7uCm6d6M4OU2rGFK
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golang.org/x/crypto v0.0.0-20170613210332-850760c427c5/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20200813134508-3edf25e44fcc/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f h1:OfiFi4JbukWwe3lzw+xunroH1mnC1e2Gy5cxNJApiSY=
golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200814200057-3d37ad5750ed/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba h1:O8mE0/t419eoIwhTFpKVkHiTs/Igowgfkj25AcZrtiE=
golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190828213141-aed303cbaa74/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.8-0.20211029000441-d6a9af8af023/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190201180003-4b09977fb922/go.mod h1:L3J43x8/uS+qIUoksaLKe6OS3nUKxOKuIFz1sl2/jx4=
google.golang.org/genproto v0.0.0-20210617175327-b9e0b3197ced h1:c5geK1iMU3cDKtFrCVQIcjR3W+JOZMuhIyICMCTbtus=
google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
google.golang.org/grpc v1.18.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
launchpad.net/gocheck v0.0.0-20140225173054-000000000087/go.mod h1:hj7XX3B/0A+80Vse0e+BUHsHMTEhd0O4cpUHr/e/BUM=
sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=

View File

@ -35,6 +35,11 @@ var upgrader = websocket.Upgrader{
func handleWebsocket(relay Relay) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
store := relay.Storage()
advancedQuerier, _ := store.(AdvancedQuerier)
advancedDeleter, _ := store.(AdvancedDeleter)
advancedSaver, _ := store.(AdvancedSaver)
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Warn().Err(err).Msg("failed to upgrade websocket")
@ -111,6 +116,18 @@ func handleWebsocket(relay Relay) func(http.ResponseWriter, *http.Request) {
hash := sha256.Sum256(serialized)
evt.ID = hex.EncodeToString(hash[:])
// block too many indexable tags
t := 0
for _, tag := range evt.Tags {
if len(tag[0]) == 1 {
t++
}
}
if t > 3 {
notice = "too many indexable tags"
return
}
// check signature (requires the ID to be set)
if ok, err := evt.CheckSignature(); err != nil {
notice = "signature verification error"
@ -124,21 +141,40 @@ func handleWebsocket(relay Relay) func(http.ResponseWriter, *http.Request) {
// event deletion -- nip09
for _, tag := range evt.Tags {
if len(tag) >= 2 && tag[0] == "e" {
if err := relay.DeleteEvent(tag[1], evt.PubKey); err != nil {
if advancedDeleter != nil {
advancedDeleter.BeforeDelete(tag[1], evt.PubKey)
}
if err := store.DeleteEvent(tag[1], evt.PubKey); err != nil {
notice = fmt.Sprintf("failed to delete: %s", err.Error())
return
}
if advancedDeleter != nil {
advancedDeleter.AfterDelete(tag[1], evt.PubKey)
}
}
}
return
}
err = relay.SaveEvent(&evt)
if err != nil {
if !relay.AcceptEvent(&evt) {
return
}
if advancedSaver != nil {
advancedSaver.BeforeSave(&evt)
}
if err := store.SaveEvent(&evt); err != nil {
notice = err.Error()
return
}
if advancedSaver != nil {
advancedSaver.AfterSave(&evt)
}
notifyListeners(&evt)
break
case "REQ":
@ -159,12 +195,21 @@ func handleWebsocket(relay Relay) func(http.ResponseWriter, *http.Request) {
return
}
events, err := relay.QueryEvents(&filters[i])
if advancedQuerier != nil {
advancedQuerier.BeforeQuery(&filters[i])
}
events, err := store.QueryEvents(&filters[i])
if err == nil {
for _, event := range events {
ws.WriteJSON([]interface{}{"EVENT", id, event})
}
}
if advancedQuerier != nil {
advancedQuerier.AfterQuery(&filters[i])
}
ws.WriteJSON([]interface{}{"EOSE", id})
}

View File

@ -10,9 +10,8 @@ var Log = log
type Relay interface {
Name() string
Init() error
SaveEvent(*nostr.Event) error
DeleteEvent(id string, pubkey string) error
QueryEvents(*nostr.Filter) ([]nostr.Event, error)
AcceptEvent(*nostr.Event) bool
Storage() Storage
}
type Injector interface {
@ -22,3 +21,26 @@ type Injector interface {
type Informationer interface {
GetNIP11InformationDocument() nip11.RelayInformationDocument
}
type AdvancedQuerier interface {
BeforeQuery(*nostr.Filter)
AfterQuery(*nostr.Filter)
}
type AdvancedDeleter interface {
BeforeDelete(id string, pubkey string)
AfterDelete(id string, pubkey string)
}
type AdvancedSaver interface {
BeforeSave(*nostr.Event)
AfterSave(*nostr.Event)
}
type Storage interface {
Init() error
QueryEvents(filter *nostr.Filter) (events []nostr.Event, err error)
DeleteEvent(id string, pubkey string) error
SaveEvent(event *nostr.Event) error
}

View File

@ -32,17 +32,23 @@ func Start(relay Relay) {
// expose this Log instance so implementations can use it
Log = log.With().Str("name", relay.Name()).Logger()
// allow implementations to do initialization stuff
if err := relay.Init(); err != nil {
Log.Fatal().Err(err).Msg("failed to start")
}
// initialize storage
if err := relay.Storage().Init(); err != nil {
log.Fatal().Err(err).Msg("error initializing storage")
return
}
// catch the websocket call before anything else
Router.Path("/").Headers("Upgrade", "websocket").HandlerFunc(handleWebsocket(relay))
// nip-11, relay information
Router.Path("/").Headers("Accept", "application/nostr+json").HandlerFunc(handleNIP11(relay))
// allow implementations to do initialization stuff
if err := relay.Init(); err != nil {
Log.Fatal().Err(err).Msg("failed to start")
}
// wait for events to come from implementations, if this is implemented
if inj, ok := relay.(Injector); ok {
go func() {

View File

@ -0,0 +1,6 @@
package postgresql
func (b PostgresBackend) DeleteEvent(id string, pubkey string) error {
_, err := b.DB.Exec("DELETE FROM events WHERE id = $1 AND pubkey = $2")
return err
}

View File

@ -1,20 +1,23 @@
package main
package postgresql
import (
"github.com/fiatjaf/relayer"
"github.com/jmoiron/sqlx"
_ "github.com/lib/pq"
"github.com/jmoiron/sqlx/reflectx"
)
func initDB(dburl string) (*sqlx.DB, error) {
db, err := sqlx.Connect("postgres", dburl)
func (b *PostgresBackend) Init() error {
db, err := sqlx.Connect("postgres", b.DatabaseURL)
if err != nil {
return nil, err
return err
}
_, err = db.Exec(`
db.Mapper = reflectx.NewMapperFunc("json", sqlx.NameMapper)
b.DB = db
_, err = b.DB.Exec(`
CREATE FUNCTION tags_to_tagvalues(jsonb) RETURNS text[]
AS 'SELECT array_agg(t->>1) FROM (SELECT jsonb_array_elements($1) AS t)s;'
AS 'SELECT array_agg(t->>1) FROM (SELECT jsonb_array_elements($1) AS t)s WHERE length(array_agg(t->>0)) = 1;'
LANGUAGE SQL
IMMUTABLE
RETURNS NULL ON NULL INPUT;
@ -38,5 +41,5 @@ CREATE INDEX IF NOT EXISTS kindidx ON event (kind);
CREATE INDEX IF NOT EXISTS arbitrarytagvalues ON event USING gin (tagvalues);
`)
relayer.Log.Print(err)
return db, nil
return nil
}

View File

@ -0,0 +1,10 @@
package postgresql
import (
"github.com/jmoiron/sqlx"
)
type PostgresBackend struct {
*sqlx.DB
DatabaseURL string
}

View File

@ -1,4 +1,4 @@
package main
package postgresql
import (
"database/sql"
@ -10,10 +10,10 @@ import (
"time"
"github.com/fiatjaf/go-nostr"
"github.com/rs/zerolog/log"
"github.com/fiatjaf/relayer"
)
func (b *ClosedRelay) QueryEvents(filter *nostr.Filter) (events []nostr.Event, err error) {
func (b PostgresBackend) QueryEvents(filter *nostr.Filter) (events []nostr.Event, err error) {
var conditions []string
var params []any
@ -137,7 +137,9 @@ func (b *ClosedRelay) QueryEvents(filter *nostr.Filter) (events []nostr.Event, e
rows, err := b.DB.Query(query, params...)
if err != nil && err != sql.ErrNoRows {
log.Warn().Err(err).Interface("filter", filter).Str("query", query).
relayer.Log.Warn().Err(err).
Interface("filter", filter).
Str("query", query).
Msg("failed to fetch events")
return nil, fmt.Errorf("failed to fetch events: %w", err)
}

View File

@ -1,4 +1,4 @@
package main
package postgresql
import (
"encoding/json"
@ -9,16 +9,7 @@ import (
"github.com/fiatjaf/go-nostr"
)
func (b *ClosedRelay) SaveEvent(evt *nostr.Event) error {
// disallow anything from non-authorized pubkeys
for _, pubkey := range b.AuthorizedPubkeys {
if pubkey == evt.PubKey {
goto save
}
}
return fmt.Errorf("event from '%s' not allowed here", evt.PubKey)
save:
func (b *PostgresBackend) SaveEvent(evt *nostr.Event) error {
// react to different kinds of events
if evt.Kind == nostr.KindSetMetadata || evt.Kind == nostr.KindContactList || (10000 <= evt.Kind && evt.Kind < 20000) {
// delete past events from this user
@ -27,8 +18,6 @@ save:
// delete past recommend_server events equal to this one
b.DB.Exec(`DELETE FROM event WHERE pubkey = $1 AND kind = $2 AND content = $3`,
evt.PubKey, evt.Kind, evt.Content)
} else {
// do not delete any, this is a closed relay so we trust everybody to not spam
}
// insert

View File

@ -3,7 +3,7 @@ whitelisted relay
- a basic relay implementation based on relayer.
- uses postgres, which I think must be over version 12 since it uses generated columns.
- only accepts events from specific pubkeys defined via the environment variable `AUTHORIZED_PUBKEYS` (comma-separated).
- only accepts events from specific pubkeys defined via the environment variable `WHITELIST` (comma-separated).
running
-------

View File

@ -1,6 +0,0 @@
package main
func (b *ClosedRelay) DeleteEvent(id string, pubkey string) error {
_, err := b.DB.Exec("DELETE FROM events WHERE id = $1 AND pubkey = $2")
return err
}

View File

@ -1,43 +1,59 @@
package main
import (
"encoding/json"
"fmt"
"github.com/fiatjaf/go-nostr"
"github.com/fiatjaf/relayer"
"github.com/jmoiron/sqlx"
"github.com/jmoiron/sqlx/reflectx"
"github.com/fiatjaf/relayer/storage/postgresql"
"github.com/kelseyhightower/envconfig"
)
type ClosedRelay struct {
PostgresDatabase string `envconfig:"POSTGRESQL_DATABASE"`
AuthorizedPubkeys []string `envconfig:"AUTHORIZED_PUBKEYS"`
DB *sqlx.DB
type Relay struct {
PostgresDatabase string `envconfig:"POSTGRESQL_DATABASE"`
Whitelist []string `envconfig:"WHITELIST"`
}
func (b *ClosedRelay) Name() string {
return "ClosedRelay"
func (r *Relay) Name() string {
return "WhitelistedRelay"
}
func (b *ClosedRelay) Init() error {
err := envconfig.Process("", b)
func (r *Relay) Storage() relayer.Storage {
return &postgresql.PostgresBackend{DatabaseURL: r.PostgresDatabase}
}
func (r *Relay) Init() error {
err := envconfig.Process("", r)
if err != nil {
return fmt.Errorf("couldn't process envconfig: %w", err)
}
if db, err := initDB(b.PostgresDatabase); err != nil {
return fmt.Errorf("failed to open database: %w", err)
} else {
db.Mapper = reflectx.NewMapperFunc("json", sqlx.NameMapper)
b.DB = db
}
return nil
}
func main() {
var b ClosedRelay
func (r *Relay) AcceptEvent(evt *nostr.Event) bool {
// disallow anything from non-authorized pubkeys
found := false
for _, pubkey := range r.Whitelist {
if pubkey == evt.PubKey {
found = true
break
}
}
if !found {
return false
}
relayer.Start(&b)
// block events that are too large
jsonb, _ := json.Marshal(evt)
if len(jsonb) > 100000 {
return false
}
return true
}
func main() {
relayer.Start(&Relay{})
}

View File

@ -1,42 +0,0 @@
package main
import (
"github.com/fiatjaf/relayer"
"github.com/jmoiron/sqlx"
_ "github.com/lib/pq"
)
func initDB(dburl string) (*sqlx.DB, error) {
db, err := sqlx.Connect("postgres", dburl)
if err != nil {
return nil, err
}
_, err = db.Exec(`
CREATE FUNCTION tags_to_tagvalues(jsonb) RETURNS text[]
AS 'SELECT array_agg(t->>1) FROM (SELECT jsonb_array_elements($1) AS t)s;'
LANGUAGE SQL
IMMUTABLE
RETURNS NULL ON NULL INPUT;
CREATE TABLE IF NOT EXISTS event (
id text NOT NULL,
pubkey text NOT NULL,
created_at integer NOT NULL,
kind integer NOT NULL,
tags jsonb NOT NULL,
content text NOT NULL,
sig text NOT NULL,
tagvalues text[] GENERATED ALWAYS AS (tags_to_tagvalues(tags)) STORED
);
CREATE UNIQUE INDEX IF NOT EXISTS ididx ON event USING btree (id text_pattern_ops);
CREATE INDEX IF NOT EXISTS pubkeyprefix ON event USING btree (pubkey text_pattern_ops);
CREATE INDEX IF NOT EXISTS timeidx ON event (created_at);
CREATE INDEX IF NOT EXISTS kindidx ON event (kind);
CREATE INDEX IF NOT EXISTS arbitrarytagvalues ON event USING gin (tagvalues);
`)
relayer.Log.Print(err)
return db, nil
}