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✨ Captcha Gateway

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This commit is contained in:
LittleSheep 2025-03-22 19:48:19 +08:00
parent ba1d96b118
commit 62dcbbf424
14 changed files with 474 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
go.mod
View File

@ -9,7 +9,9 @@ require (
github.com/gofiber/contrib/fiberzerolog v1.0.2
github.com/gofiber/contrib/websocket v1.3.2
github.com/gofiber/fiber/v2 v2.52.6
github.com/gofiber/template/html/v2 v2.1.3
github.com/golang-jwt/jwt/v5 v5.2.1
github.com/google/uuid v1.6.0
github.com/json-iterator/go v1.1.12
github.com/lib/pq v1.10.9
github.com/nats-io/nats.go v1.37.0
@ -39,9 +41,10 @@ require (
github.com/go-playground/locales v0.14.1 // indirect
github.com/go-playground/universal-translator v0.18.1 // indirect
github.com/go-sql-driver/mysql v1.8.1 // indirect
github.com/gofiber/template v1.8.3 // indirect
github.com/gofiber/utils v1.1.0 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/golang/protobuf v1.5.4 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/hashicorp/hcl v1.0.0 // indirect
github.com/jackc/pgpassfile v1.0.0 // indirect
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect

10
go.sum
View File

@ -42,6 +42,12 @@ github.com/gofiber/contrib/websocket v1.3.2 h1:AUq5PYeKwK50s0nQrnluuINYeep1c4nRC
github.com/gofiber/contrib/websocket v1.3.2/go.mod h1:07u6QGMsvX+sx7iGNCl5xhzuUVArWwLQ3tBIH24i+S8=
github.com/gofiber/fiber/v2 v2.52.6 h1:Rfp+ILPiYSvvVuIPvxrBns+HJp8qGLDnLJawAu27XVI=
github.com/gofiber/fiber/v2 v2.52.6/go.mod h1:YEcBbO/FB+5M1IZNBP9FO3J9281zgPAreiI1oqg8nDw=
github.com/gofiber/template v1.8.3 h1:hzHdvMwMo/T2kouz2pPCA0zGiLCeMnoGsQZBTSYgZxc=
github.com/gofiber/template v1.8.3/go.mod h1:bs/2n0pSNPOkRa5VJ8zTIvedcI/lEYxzV3+YPXdBvq8=
github.com/gofiber/template/html/v2 v2.1.3 h1:n1LYBtmr9C0V/k/3qBblXyMxV5B0o/gpb6dFLp8ea+o=
github.com/gofiber/template/html/v2 v2.1.3/go.mod h1:U5Fxgc5KpyujU9OqKzy6Kn6Qup6Tm7zdsISR+VpnHRE=
github.com/gofiber/utils v1.1.0 h1:vdEBpn7AzIUJRhe+CiTOJdUcTg4Q9RK+pEa0KPbLdrM=
github.com/gofiber/utils v1.1.0/go.mod h1:poZpsnhBykfnY1Mc0KeEa6mSHrS3dV0+oBWyeQmb2e0=
github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
@ -154,8 +160,8 @@ github.com/spf13/viper v1.19.0/go.mod h1:GQUN9bilAbhU/jgc1bKs99f/suXKeUMct8Adx5+
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
github.com/tinylib/msgp v1.2.5 h1:WeQg1whrXRFiZusidTQqzETkRpGjFjcIhW6uqWH09po=

33
pkg/internal/captcha/index.go Normal file
View File

@ -0,0 +1,33 @@
package captcha
import (
"github.com/rs/zerolog/log"
"github.com/spf13/viper"
)
type TemplateData struct {
ApiKey string `json:"api_key"`
}
func GetTemplateData() TemplateData {
return TemplateData{
ApiKey: viper.GetString("captcha.api_key"),
}
}
type CaptchaAdapter interface {
Validate(token, ip string) bool
}
var adapters = map[string]CaptchaAdapter{
"turnstile": &TurnstileAdapter{},
}
func Validate(token, ip string) bool {
provider := viper.GetString("captcha.provider")
if adapter, ok := adapters[provider]; ok {
return adapter.Validate(token, ip)
}
log.Error().Msg("Unable to handle captcha validate request due to unsupported provider.")
return false
}

46
pkg/internal/captcha/turnstile.go Normal file
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@ -0,0 +1,46 @@
package captcha
import (
"bytes"
"encoding/json"
"net/http"
"github.com/rs/zerolog/log"
"github.com/spf13/viper"
)
type TurnstileAdapter struct{}
type turnstileResponse struct {
Success bool `json:"success"`
ErrorCodes []string `json:"error-codes"`
}
func (a *TurnstileAdapter) Validate(token, ip string) bool {
url := "https://challenges.cloudflare.com/turnstile/v0/siteverify"
data := map[string]string{
"secret": viper.GetString("captcha.api_secret"),
"response": token,
"remoteip": ip,
}
jsonData, _ := json.Marshal(data)
resp, err := http.Post(url, "application/json", bytes.NewBuffer(jsonData))
if err != nil {
log.Error().Err(err).Msg("Error sending request to Turnstile...")
return false
}
defer resp.Body.Close()
var result turnstileResponse
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
log.Error().Err(err).Msg("Error decoding response from Turnstile...")
return false
}
if !result.Success {
log.Warn().Strs("errors", result.ErrorCodes).Msg("An captcha validation request failed...")
}
return result.Success
}

14
pkg/internal/grpc/captcha.go Normal file
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@ -0,0 +1,14 @@
package grpc
import (
"context"
"git.solsynth.dev/hypernet/nexus/pkg/internal/captcha"
"git.solsynth.dev/hypernet/nexus/pkg/proto"
)
func (v *Server) CheckCaptcha(_ context.Context, req *proto.CheckCaptchaRequest) (*proto.CheckCaptchaResponse, error) {
return &proto.CheckCaptchaResponse{
IsValid: captcha.Validate(req.Token, req.RemoteIp),
}, nil
}

2
pkg/internal/grpc/server.go
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@ -19,6 +19,7 @@ type Server struct {
proto.UnimplementedDatabaseServiceServer
proto.UnimplementedStreamServiceServer
proto.UnimplementedAllocatorServiceServer
proto.UnimplementedCaptchaServiceServer
health.UnimplementedHealthServer
srv *grpc.Server
@ -33,6 +34,7 @@ func NewServer() *Server {
proto.RegisterDatabaseServiceServer(server.srv, server)
proto.RegisterStreamServiceServer(server.srv, server)
proto.RegisterAllocatorServiceServer(server.srv, server)
proto.RegisterCaptchaServiceServer(server.srv, server)
health.RegisterHealthServer(server.srv, server)
reflection.Register(server.srv)

25
pkg/internal/web/api/captcha.go Normal file
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@ -0,0 +1,25 @@
package api
import (
"git.solsynth.dev/hypernet/nexus/pkg/internal/captcha"
"git.solsynth.dev/hypernet/nexus/pkg/internal/web/exts"
"github.com/gofiber/fiber/v2"
)
func renderCaptcha(c *fiber.Ctx) error {
return c.Render("captcha", captcha.GetTemplateData())
}
func validateCaptcha(c *fiber.Ctx) error {
var body struct {
CaptchaToken string `json:"captcha_tk"`
}
if err := exts.BindAndValidate(c, &body); err != nil {
return err
}
if !captcha.Validate(body.CaptchaToken, c.IP()) {
return c.SendStatus(fiber.StatusNotAcceptable)
}
return c.SendStatus(fiber.StatusOK)
}

2
pkg/internal/web/api/index.go
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@ -12,6 +12,8 @@ import (
)
func MapControllers(app *fiber.App) {
app.Get("/captcha", renderCaptcha)
app.Post("/captcha", validateCaptcha)
app.Get("/check-ip", getClientIP)
app.Get("/", func(c *fiber.Ctx) error {
return c.JSON(fiber.Map{

4
pkg/internal/web/server.go
View File

@ -11,6 +11,7 @@ import (
"github.com/gofiber/fiber/v2/middleware/cors"
"github.com/gofiber/fiber/v2/middleware/idempotency"
"github.com/gofiber/fiber/v2/middleware/limiter"
"github.com/gofiber/template/html/v2"
"github.com/rs/zerolog/log"
"github.com/samber/lo"
"github.com/spf13/viper"
@ -21,6 +22,8 @@ type WebApp struct {
}
func NewServer() *WebApp {
engine := html.New(viper.GetString("templates_dir"), ".tmpl")
app := fiber.New(fiber.Config{
DisableStartupMessage: true,
EnableIPValidation: true,
@ -32,6 +35,7 @@ func NewServer() *WebApp {
BodyLimit: 512 * 1024 * 1024 * 1024, // 512 TiB
ReadBufferSize: 5 * 1024 * 1024, // 5MB for large JWT
EnablePrintRoutes: viper.GetBool("debug.print_routes"),
Views: engine,
})
app.Use(fiberzerolog.New(fiberzerolog.Config{

193
pkg/proto/captcha.pb.go Normal file
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@ -0,0 +1,193 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.35.1
// protoc v5.28.3
// source: captcha.proto
package proto
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type CheckCaptchaRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Token string `protobuf:"bytes,1,opt,name=token,proto3" json:"token,omitempty"`
RemoteIp string `protobuf:"bytes,2,opt,name=remote_ip,json=remoteIp,proto3" json:"remote_ip,omitempty"`
}
func (x *CheckCaptchaRequest) Reset() {
*x = CheckCaptchaRequest{}
mi := &file_captcha_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *CheckCaptchaRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*CheckCaptchaRequest) ProtoMessage() {}
func (x *CheckCaptchaRequest) ProtoReflect() protoreflect.Message {
mi := &file_captcha_proto_msgTypes[0]
if x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use CheckCaptchaRequest.ProtoReflect.Descriptor instead.
func (*CheckCaptchaRequest) Descriptor() ([]byte, []int) {
return file_captcha_proto_rawDescGZIP(), []int{0}
}
func (x *CheckCaptchaRequest) GetToken() string {
if x != nil {
return x.Token
}
return ""
}
func (x *CheckCaptchaRequest) GetRemoteIp() string {
if x != nil {
return x.RemoteIp
}
return ""
}
type CheckCaptchaResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
IsValid bool `protobuf:"varint,1,opt,name=is_valid,json=isValid,proto3" json:"is_valid,omitempty"`
}
func (x *CheckCaptchaResponse) Reset() {
*x = CheckCaptchaResponse{}
mi := &file_captcha_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *CheckCaptchaResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*CheckCaptchaResponse) ProtoMessage() {}
func (x *CheckCaptchaResponse) ProtoReflect() protoreflect.Message {
mi := &file_captcha_proto_msgTypes[1]
if x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use CheckCaptchaResponse.ProtoReflect.Descriptor instead.
func (*CheckCaptchaResponse) Descriptor() ([]byte, []int) {
return file_captcha_proto_rawDescGZIP(), []int{1}
}
func (x *CheckCaptchaResponse) GetIsValid() bool {
if x != nil {
return x.IsValid
}
return false
}
var File_captcha_proto protoreflect.FileDescriptor
var file_captcha_proto_rawDesc = []byte{
0x0a, 0x0d, 0x63, 0x61, 0x70, 0x74, 0x63, 0x68, 0x61, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
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0x70, 0x74, 0x63, 0x68, 0x61, 0x12, 0x1a, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x43, 0x68,
0x65, 0x63, 0x6b, 0x43, 0x61, 0x70, 0x74, 0x63, 0x68, 0x61, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
0x74, 0x1a, 0x1b, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x43,
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0x74, 0x6f, 0x33,
}
var (
file_captcha_proto_rawDescOnce sync.Once
file_captcha_proto_rawDescData = file_captcha_proto_rawDesc
)
func file_captcha_proto_rawDescGZIP() []byte {
file_captcha_proto_rawDescOnce.Do(func() {
file_captcha_proto_rawDescData = protoimpl.X.CompressGZIP(file_captcha_proto_rawDescData)
})
return file_captcha_proto_rawDescData
}
var file_captcha_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_captcha_proto_goTypes = []any{
(*CheckCaptchaRequest)(nil), // 0: proto.CheckCaptchaRequest
(*CheckCaptchaResponse)(nil), // 1: proto.CheckCaptchaResponse
}
var file_captcha_proto_depIdxs = []int32{
0, // 0: proto.CaptchaService.CheckCaptcha:input_type -> proto.CheckCaptchaRequest
1, // 1: proto.CaptchaService.CheckCaptcha:output_type -> proto.CheckCaptchaResponse
1, // [1:2] is the sub-list for method output_type
0, // [0:1] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_captcha_proto_init() }
func file_captcha_proto_init() {
if File_captcha_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_captcha_proto_rawDesc,
NumEnums: 0,
NumMessages: 2,
NumExtensions: 0,
NumServices: 1,
},
GoTypes: file_captcha_proto_goTypes,
DependencyIndexes: file_captcha_proto_depIdxs,
MessageInfos: file_captcha_proto_msgTypes,
}.Build()
File_captcha_proto = out.File
file_captcha_proto_rawDesc = nil
file_captcha_proto_goTypes = nil
file_captcha_proto_depIdxs = nil
}

18
pkg/proto/captcha.proto Normal file
View File

@ -0,0 +1,18 @@
syntax = "proto3";
option go_package = ".;proto";
package proto;
service CaptchaService {
rpc CheckCaptcha(CheckCaptchaRequest) returns (CheckCaptchaResponse) {}
}
message CheckCaptchaRequest {
string token = 1;
string remote_ip = 2;
}
message CheckCaptchaResponse {
bool is_valid = 1;
}

121
pkg/proto/captcha_grpc.pb.go Normal file
View File

@ -0,0 +1,121 @@
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.5.1
// - protoc v5.28.3
// source: captcha.proto
package proto
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.64.0 or later.
const _ = grpc.SupportPackageIsVersion9
const (
CaptchaService_CheckCaptcha_FullMethodName = "/proto.CaptchaService/CheckCaptcha"
)
// CaptchaServiceClient is the client API for CaptchaService service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type CaptchaServiceClient interface {
CheckCaptcha(ctx context.Context, in *CheckCaptchaRequest, opts ...grpc.CallOption) (*CheckCaptchaResponse, error)
}
type captchaServiceClient struct {
cc grpc.ClientConnInterface
}
func NewCaptchaServiceClient(cc grpc.ClientConnInterface) CaptchaServiceClient {
return &captchaServiceClient{cc}
}
func (c *captchaServiceClient) CheckCaptcha(ctx context.Context, in *CheckCaptchaRequest, opts ...grpc.CallOption) (*CheckCaptchaResponse, error) {
cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
out := new(CheckCaptchaResponse)
err := c.cc.Invoke(ctx, CaptchaService_CheckCaptcha_FullMethodName, in, out, cOpts...)
if err != nil {
return nil, err
}
return out, nil
}
// CaptchaServiceServer is the server API for CaptchaService service.
// All implementations must embed UnimplementedCaptchaServiceServer
// for forward compatibility.
type CaptchaServiceServer interface {
CheckCaptcha(context.Context, *CheckCaptchaRequest) (*CheckCaptchaResponse, error)
mustEmbedUnimplementedCaptchaServiceServer()
}
// UnimplementedCaptchaServiceServer must be embedded to have
// forward compatible implementations.
//
// NOTE: this should be embedded by value instead of pointer to avoid a nil
// pointer dereference when methods are called.
type UnimplementedCaptchaServiceServer struct{}
func (UnimplementedCaptchaServiceServer) CheckCaptcha(context.Context, *CheckCaptchaRequest) (*CheckCaptchaResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method CheckCaptcha not implemented")
}
func (UnimplementedCaptchaServiceServer) mustEmbedUnimplementedCaptchaServiceServer() {}
func (UnimplementedCaptchaServiceServer) testEmbeddedByValue() {}
// UnsafeCaptchaServiceServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to CaptchaServiceServer will
// result in compilation errors.
type UnsafeCaptchaServiceServer interface {
mustEmbedUnimplementedCaptchaServiceServer()
}
func RegisterCaptchaServiceServer(s grpc.ServiceRegistrar, srv CaptchaServiceServer) {
// If the following call pancis, it indicates UnimplementedCaptchaServiceServer was
// embedded by pointer and is nil. This will cause panics if an
// unimplemented method is ever invoked, so we test this at initialization
// time to prevent it from happening at runtime later due to I/O.
if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
t.testEmbeddedByValue()
}
s.RegisterService(&CaptchaService_ServiceDesc, srv)
}
func _CaptchaService_CheckCaptcha_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(CheckCaptchaRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(CaptchaServiceServer).CheckCaptcha(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: CaptchaService_CheckCaptcha_FullMethodName,
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(CaptchaServiceServer).CheckCaptcha(ctx, req.(*CheckCaptchaRequest))
}
return interceptor(ctx, in, info, handler)
}
// CaptchaService_ServiceDesc is the grpc.ServiceDesc for CaptchaService service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var CaptchaService_ServiceDesc = grpc.ServiceDesc{
ServiceName: "proto.CaptchaService",
HandlerType: (*CaptchaServiceServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "CheckCaptcha",
Handler: _CaptchaService_CheckCaptcha_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "captcha.proto",
}

2
settings.toml
View File

@ -2,6 +2,8 @@ bind = "0.0.0.0:8001"
grpc_bind = "0.0.0.0:7001"
domain = "localhost"
templates_dir = "./templates"
rate_limit = 120
rate_limit_advance = 60

4
templates/captcha.tmpl
View File

@ -3,7 +3,7 @@
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Cloudflare Turnstile</title>
<title>Solar Network Captcha</title>
<link
href="https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap"
rel="stylesheet"
@ -54,7 +54,7 @@
<h1>reCaptcha</h1>
<div
class="cf-turnstile"
data-sitekey="{{ .APIKey }}"
data-sitekey="{{ .ApiKey }}"
data-callback="onSuccess"
></div>
</div>