Lewis Crichton
116 lines
2.5 KiB
Go
116 lines
2.5 KiB
Go
package routes
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import (
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"crypto/rand"
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"encoding/hex"
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"github.com/gofiber/fiber/v2"
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"github.com/imroc/req/v3"
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"github.com/redis/go-redis/v9"
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g "github.com/vencord/backend/globals"
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"github.com/vencord/backend/util"
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)
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// /v1/oauth
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type DiscordAccessTokenResult struct {
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AccessToken string `json:"access_token"`
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}
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type DiscordUserResult struct {
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Id string `json:"id"`
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}
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// /v1/oauth/callback
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func GETOAuthCallback(c *fiber.Ctx) error {
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code := c.Query("code")
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if code == "" {
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return c.Status(400).JSON(&fiber.Map{
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"error": "Missing code",
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})
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}
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var accessTokenResult DiscordAccessTokenResult
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res, err := req.R().SetFormData(map[string]string{
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"client_id": g.DISCORD_CLIENT_ID,
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"client_secret": g.DISCORD_CLIENT_SECRET,
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"grant_type": "authorization_code",
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"code": code,
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"redirect_uri": g.DISCORD_REDIRECT_URI,
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"scope": "identify",
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}).SetSuccessResult(&accessTokenResult).Post("https://discord.com/api/oauth2/token")
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if err != nil {
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return c.Status(500).JSON(&fiber.Map{
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"error": "Failed to request access token",
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})
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}
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if res.IsErrorState() {
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return c.Status(400).JSON(&fiber.Map{
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"error": "Invalid code",
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})
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}
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accessToken := accessTokenResult.AccessToken
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var userResult DiscordUserResult
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res, err = req.R().SetHeaders(map[string]string{
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"Authorization": "Bearer " + accessToken,
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}).SetSuccessResult(&userResult).Get("https://discord.com/api/users/@me")
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if err != nil {
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return c.Status(500).JSON(&fiber.Map{
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"error": "Failed to request user",
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})
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}
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if res.IsErrorState() {
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return c.Status(500).JSON(&fiber.Map{
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"error": "Failed to request user",
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})
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}
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userId := userResult.Id
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if g.ALLOWED_USERS != nil && !g.ALLOWED_USERS[userId] {
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return c.Status(403).JSON(&fiber.Map{
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"error": "User is not whitelisted",
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})
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}
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secret, err := g.RDB.Get(c.Context(), "secrets:"+util.Hash(g.PEPPER_SECRETS+userId)).Result()
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if err == redis.Nil {
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key := make([]byte, 48)
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_, err := rand.Read(key)
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if err != nil {
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return c.Status(500).JSON(&fiber.Map{
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"error": "Failed to generate secret",
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})
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}
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secret = hex.EncodeToString(key)
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g.RDB.Set(c.Context(), "secrets:"+util.Hash(g.PEPPER_SECRETS+userId), secret, 0)
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} else if err != nil {
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panic(err)
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}
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return c.JSON(&fiber.Map{
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"secret": secret,
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})
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}
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// /v1/oauth/settings
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func GETOAuthSettings(c *fiber.Ctx) error {
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return c.JSON(&fiber.Map{
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"clientId": g.DISCORD_CLIENT_ID,
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"redirectUri": g.DISCORD_REDIRECT_URI,
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})
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}
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