forked from bwmarrin/discordgo
-
Notifications
You must be signed in to change notification settings - Fork 0
/
interactions.go
465 lines (397 loc) · 16.1 KB
/
interactions.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
package discordgo
import (
"bytes"
"crypto/ed25519"
"encoding/hex"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"time"
)
// InteractionDeadline is the time allowed to respond to an interaction.
const InteractionDeadline = time.Second * 3
// ApplicationCommandType represents the type of application command.
type ApplicationCommandType uint8
// Application command types
const (
// ChatApplicationCommand is default command type. They are slash commands (i.e. called directly from the chat).
ChatApplicationCommand ApplicationCommandType = 1
// UserApplicationCommand adds command to user context menu.
UserApplicationCommand ApplicationCommandType = 2
// MessageApplicationCommand adds command to message context menu.
MessageApplicationCommand ApplicationCommandType = 3
)
// ApplicationCommand represents an application's slash command.
type ApplicationCommand struct {
ID string `json:"id,omitempty"`
ApplicationID string `json:"application_id,omitempty"`
Type ApplicationCommandType `json:"type,omitempty"`
Name string `json:"name"`
// NOTE: Chat commands only. Otherwise it mustn't be set.
Description string `json:"description,omitempty"`
Version string `json:"version,omitempty"`
// NOTE: Chat commands only. Otherwise it mustn't be set.
Options []*ApplicationCommandOption `json:"options"`
}
// ApplicationCommandOptionType indicates the type of a slash command's option.
type ApplicationCommandOptionType uint8
// Application command option types.
const (
ApplicationCommandOptionSubCommand ApplicationCommandOptionType = 1
ApplicationCommandOptionSubCommandGroup ApplicationCommandOptionType = 2
ApplicationCommandOptionString ApplicationCommandOptionType = 3
ApplicationCommandOptionInteger ApplicationCommandOptionType = 4
ApplicationCommandOptionBoolean ApplicationCommandOptionType = 5
ApplicationCommandOptionUser ApplicationCommandOptionType = 6
ApplicationCommandOptionChannel ApplicationCommandOptionType = 7
ApplicationCommandOptionRole ApplicationCommandOptionType = 8
ApplicationCommandOptionMentionable ApplicationCommandOptionType = 9
)
func (t ApplicationCommandOptionType) String() string {
switch t {
case ApplicationCommandOptionSubCommand:
return "SubCommand"
case ApplicationCommandOptionSubCommandGroup:
return "SubCommandGroup"
case ApplicationCommandOptionString:
return "String"
case ApplicationCommandOptionInteger:
return "Integer"
case ApplicationCommandOptionBoolean:
return "Boolean"
case ApplicationCommandOptionUser:
return "User"
case ApplicationCommandOptionChannel:
return "Channel"
case ApplicationCommandOptionRole:
return "Role"
case ApplicationCommandOptionMentionable:
return "Mentionable"
}
return fmt.Sprintf("ApplicationCommandOptionType(%d)", t)
}
// ApplicationCommandOption represents an option/subcommand/subcommands group.
type ApplicationCommandOption struct {
Type ApplicationCommandOptionType `json:"type"`
Name string `json:"name"`
Description string `json:"description,omitempty"`
// NOTE: This feature was on the API, but at some point developers decided to remove it.
// So I commented it, until it will be officially on the docs.
// Default bool `json:"default"`
ChannelTypes []ChannelType `json:"channel_types"`
Required bool `json:"required"`
Options []*ApplicationCommandOption `json:"options"`
// NOTE: mutually exclusive with Choices.
Autocomplete bool `json:"autocomplete"`
Choices []*ApplicationCommandOptionChoice `json:"choices"`
}
// ApplicationCommandOptionChoice represents a slash command option choice.
type ApplicationCommandOptionChoice struct {
Name string `json:"name"`
Value interface{} `json:"value"`
}
// InteractionType indicates the type of an interaction event.
type InteractionType uint8
// Interaction types
const (
InteractionPing InteractionType = 1
InteractionApplicationCommand InteractionType = 2
InteractionMessageComponent InteractionType = 3
InteractionApplicationCommandAutocomplete InteractionType = 4
)
func (t InteractionType) String() string {
switch t {
case InteractionPing:
return "Ping"
case InteractionApplicationCommand:
return "ApplicationCommand"
case InteractionMessageComponent:
return "MessageComponent"
}
return fmt.Sprintf("InteractionType(%d)", t)
}
// Interaction represents data of an interaction.
type Interaction struct {
ID string `json:"id"`
Type InteractionType `json:"type"`
Data InteractionData `json:"-"`
GuildID string `json:"guild_id"`
ChannelID string `json:"channel_id"`
// The message on which interaction was used.
// NOTE: this field is only filled when a button click triggered the interaction. Otherwise it will be nil.
Message *Message `json:"message"`
// The member who invoked this interaction.
// NOTE: this field is only filled when the slash command was invoked in a guild;
// if it was invoked in a DM, the `User` field will be filled instead.
// Make sure to check for `nil` before using this field.
Member *Member `json:"member"`
// The user who invoked this interaction.
// NOTE: this field is only filled when the slash command was invoked in a DM;
// if it was invoked in a guild, the `Member` field will be filled instead.
// Make sure to check for `nil` before using this field.
User *User `json:"user"`
Token string `json:"token"`
Version int `json:"version"`
}
type interaction Interaction
type rawInteraction struct {
interaction
Data json.RawMessage `json:"data"`
}
// UnmarshalJSON is a method for unmarshalling JSON object to Interaction.
func (i *Interaction) UnmarshalJSON(raw []byte) error {
var tmp rawInteraction
err := json.Unmarshal(raw, &tmp)
if err != nil {
return err
}
*i = Interaction(tmp.interaction)
switch tmp.Type {
case InteractionApplicationCommand, InteractionApplicationCommandAutocomplete:
v := ApplicationCommandInteractionData{}
err = json.Unmarshal(tmp.Data, &v)
if err != nil {
return err
}
i.Data = v
case InteractionMessageComponent:
v := MessageComponentInteractionData{}
err = json.Unmarshal(tmp.Data, &v)
if err != nil {
return err
}
i.Data = v
}
return nil
}
// MessageComponentData is helper function to assert the inner InteractionData to MessageComponentInteractionData.
// Make sure to check that the Type of the interaction is InteractionMessageComponent before calling.
func (i Interaction) MessageComponentData() (data MessageComponentInteractionData) {
if i.Type != InteractionMessageComponent {
panic("MessageComponentData called on interaction of type " + i.Type.String())
}
return i.Data.(MessageComponentInteractionData)
}
// ApplicationCommandData is helper function to assert the inner InteractionData to ApplicationCommandInteractionData.
// Make sure to check that the Type of the interaction is InteractionApplicationCommand before calling.
func (i Interaction) ApplicationCommandData() (data ApplicationCommandInteractionData) {
if i.Type != InteractionApplicationCommand && i.Type != InteractionApplicationCommandAutocomplete {
panic("ApplicationCommandData called on interaction of type " + i.Type.String())
}
return i.Data.(ApplicationCommandInteractionData)
}
// InteractionData is a common interface for all types of interaction data.
type InteractionData interface {
Type() InteractionType
}
// ApplicationCommandInteractionData contains the data of application command interaction.
type ApplicationCommandInteractionData struct {
ID string `json:"id"`
Name string `json:"name"`
Resolved *ApplicationCommandInteractionDataResolved `json:"resolved"`
// Slash command options
Options []*ApplicationCommandInteractionDataOption `json:"options"`
// Target (user/message) id on which context menu command was called.
// The details are stored in Resolved according to command type.
TargetID string `json:"target_id"`
}
// ApplicationCommandInteractionDataResolved contains resolved data of command execution.
// Partial Member objects are missing user, deaf and mute fields.
// Partial Channel objects only have id, name, type and permissions fields.
type ApplicationCommandInteractionDataResolved struct {
Users map[string]*User `json:"users"`
Members map[string]*Member `json:"members"`
Roles map[string]*Role `json:"roles"`
Channels map[string]*Channel `json:"channels"`
Messages map[string]*Message `json:"messages"`
}
// Type returns the type of interaction data.
func (ApplicationCommandInteractionData) Type() InteractionType {
return InteractionApplicationCommand
}
// MessageComponentInteractionData contains the data of message component interaction.
type MessageComponentInteractionData struct {
CustomID string `json:"custom_id"`
ComponentType ComponentType `json:"component_type"`
// NOTE: Only filled when ComponentType is SelectMenuComponent (3). Otherwise is nil.
Values []string `json:"values"`
}
// Type returns the type of interaction data.
func (MessageComponentInteractionData) Type() InteractionType {
return InteractionMessageComponent
}
// ApplicationCommandInteractionDataOption represents an option of a slash command.
type ApplicationCommandInteractionDataOption struct {
Name string `json:"name"`
Type ApplicationCommandOptionType `json:"type"`
// NOTE: Contains the value specified by Type.
Value interface{} `json:"value,omitempty"`
Options []*ApplicationCommandInteractionDataOption `json:"options,omitempty"`
// NOTE: autocomplete interaction only.
Focused bool `json:"focused,omitempty"`
}
// IntValue is a utility function for casting option value to integer
func (o ApplicationCommandInteractionDataOption) IntValue() int64 {
if o.Type != ApplicationCommandOptionInteger {
panic("IntValue called on data option of type " + o.Type.String())
}
return int64(o.Value.(float64))
}
// UintValue is a utility function for casting option value to unsigned integer
func (o ApplicationCommandInteractionDataOption) UintValue() uint64 {
if o.Type != ApplicationCommandOptionInteger {
panic("UintValue called on data option of type " + o.Type.String())
}
return uint64(o.Value.(float64))
}
// FloatValue is a utility function for casting option value to float
func (o ApplicationCommandInteractionDataOption) FloatValue() float64 {
// TODO: limit calls to Number type once it is released
if v, ok := o.Value.(float64); ok {
return v
}
return 0.0
}
// StringValue is a utility function for casting option value to string
func (o ApplicationCommandInteractionDataOption) StringValue() string {
if o.Type != ApplicationCommandOptionString {
panic("StringValue called on data option of type " + o.Type.String())
}
return o.Value.(string)
}
// BoolValue is a utility function for casting option value to bool
func (o ApplicationCommandInteractionDataOption) BoolValue() bool {
if o.Type != ApplicationCommandOptionBoolean {
panic("BoolValue called on data option of type " + o.Type.String())
}
return o.Value.(bool)
}
// ChannelValue is a utility function for casting option value to channel object.
// s : Session object, if not nil, function additionally fetches all channel's data
func (o ApplicationCommandInteractionDataOption) ChannelValue(s *Session) *Channel {
if o.Type != ApplicationCommandOptionChannel {
panic("ChannelValue called on data option of type " + o.Type.String())
}
chanID := o.Value.(string)
if s == nil {
return &Channel{ID: chanID}
}
ch, err := s.State.Channel(chanID)
if err != nil {
ch, err = s.Channel(chanID)
if err != nil {
return &Channel{ID: chanID}
}
}
return ch
}
// RoleValue is a utility function for casting option value to role object.
// s : Session object, if not nil, function additionally fetches all role's data
func (o ApplicationCommandInteractionDataOption) RoleValue(s *Session, gID string) *Role {
if o.Type != ApplicationCommandOptionRole && o.Type != ApplicationCommandOptionMentionable {
panic("RoleValue called on data option of type " + o.Type.String())
}
roleID := o.Value.(string)
if s == nil || gID == "" {
return &Role{ID: roleID}
}
r, err := s.State.Role(roleID, gID)
if err != nil {
roles, err := s.GuildRoles(gID)
if err == nil {
for _, r = range roles {
if r.ID == roleID {
return r
}
}
}
return &Role{ID: roleID}
}
return r
}
// UserValue is a utility function for casting option value to user object.
// s : Session object, if not nil, function additionally fetches all user's data
func (o ApplicationCommandInteractionDataOption) UserValue(s *Session) *User {
if o.Type != ApplicationCommandOptionUser && o.Type != ApplicationCommandOptionMentionable {
panic("UserValue called on data option of type " + o.Type.String())
}
userID := o.Value.(string)
if s == nil {
return &User{ID: userID}
}
u, err := s.User(userID)
if err != nil {
return &User{ID: userID}
}
return u
}
// InteractionResponseType is type of interaction response.
type InteractionResponseType uint8
// Interaction response types.
const (
// InteractionResponsePong is for ACK ping event.
InteractionResponsePong InteractionResponseType = 1
// InteractionResponseChannelMessageWithSource is for responding with a message, showing the user's input.
InteractionResponseChannelMessageWithSource InteractionResponseType = 4
// InteractionResponseDeferredChannelMessageWithSource acknowledges that the event was received, and that a follow-up will come later.
InteractionResponseDeferredChannelMessageWithSource InteractionResponseType = 5
// InteractionResponseDeferredMessageUpdate acknowledges that the message component interaction event was received, and message will be updated later.
InteractionResponseDeferredMessageUpdate InteractionResponseType = 6
// InteractionResponseUpdateMessage is for updating the message to which message component was attached.
InteractionResponseUpdateMessage InteractionResponseType = 7
// InteractionApplicationCommandAutocompleteResult shows autocompletion results. Autocomplete interaction only.
InteractionApplicationCommandAutocompleteResult InteractionResponseType = 8
)
// InteractionResponse represents a response for an interaction event.
type InteractionResponse struct {
Type InteractionResponseType `json:"type,omitempty"`
Data *InteractionResponseData `json:"data,omitempty"`
}
// InteractionResponseData is response data for an interaction.
type InteractionResponseData struct {
TTS bool `json:"tts"`
Content string `json:"content"`
Components []MessageComponent `json:"components"`
Embeds []*MessageEmbed `json:"embeds,omitempty"`
AllowedMentions *MessageAllowedMentions `json:"allowed_mentions,omitempty"`
Flags uint64 `json:"flags,omitempty"`
Files []*File `json:"-"`
// NOTE: autocomplete interaction only.
Choices []*ApplicationCommandOptionChoice `json:"choices,omitempty"`
}
// VerifyInteraction implements message verification of the discord interactions api
// signing algorithm, as documented here:
// https://discord.com/developers/docs/interactions/receiving-and-responding#security-and-authorization
func VerifyInteraction(r *http.Request, key ed25519.PublicKey) bool {
var msg bytes.Buffer
signature := r.Header.Get("X-Signature-Ed25519")
if signature == "" {
return false
}
sig, err := hex.DecodeString(signature)
if err != nil {
return false
}
if len(sig) != ed25519.SignatureSize {
return false
}
timestamp := r.Header.Get("X-Signature-Timestamp")
if timestamp == "" {
return false
}
msg.WriteString(timestamp)
defer r.Body.Close()
var body bytes.Buffer
// at the end of the function, copy the original body back into the request
defer func() {
r.Body = ioutil.NopCloser(&body)
}()
// copy body into buffers
_, err = io.Copy(&msg, io.TeeReader(r.Body, &body))
if err != nil {
return false
}
return ed25519.Verify(key, msg.Bytes(), sig)
}