99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
package jitsi
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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type Config struct {
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// Secret is the HMAC-SHA256 shared secret (at least 32 bytes hex-encoded).
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Secret string
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// AppID is the Jitsi App ID (the "iss" and "aud" claim value).
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AppID string
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// AppName is the friendly name shown in the Jitsi client (optional).
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AppName string
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// Domain is the Jitsi Meet domain (e.g. "meet.jit.si").
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Domain string
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// SiteDomain is the public domain of this portal (e.g. "portal.example.com").
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// When set, avatar URLs embedded in the JWT are absolute (https://...) so
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// Jitsi, running on another domain, can load them. When empty, relative
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// URLs are used.
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SiteDomain string
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}
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type JitsiClaims struct {
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jwt.RegisteredClaims
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Room string `json:"room,omitempty"`
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Moderator bool `json:"moderator"`
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Context *JitsiContext `json:"context,omitempty"`
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}
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type JitsiContext struct {
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User *JitsiUser `json:"user,omitempty"`
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}
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type JitsiUser struct {
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ID string `json:"id"`
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Name string `json:"name"`
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Email string `json:"email,omitempty"`
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Avatar string `json:"avatar,omitempty"`
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}
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// GenerateSecret creates a new random hex-encoded 32-byte secret.
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func GenerateSecret() string {
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b := make([]byte, 32)
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rand.Read(b)
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return hex.EncodeToString(b)
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}
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// MeetURL returns the full Jitsi Meet URL for a room with a JWT token.
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// If Domain is empty it defaults to "meet.jit.si".
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func (c *Config) MeetURL(room, jwtToken string) string {
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domain := c.Domain
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if domain == "" {
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domain = "meet.jit.si"
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}
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return fmt.Sprintf("https://%s/%s?jwt=%s", domain, room, jwtToken)
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}
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// GenerateToken creates a JWT for the given room and user.
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// moderator grants Jitsi moderator privileges (mute, kick, etc.) and avatar
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// is the user's avatar URL (may be empty).
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func (c *Config) GenerateToken(userID, userName, room string, moderator bool, avatar string) (string, error) {
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if c.Secret == "" {
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return "", fmt.Errorf("jitsi secret is not configured")
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}
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if c.AppID == "" {
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return "", fmt.Errorf("jitsi app id is not configured")
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}
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now := time.Now().UTC()
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claims := JitsiClaims{
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RegisteredClaims: jwt.RegisteredClaims{
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Issuer: c.AppID,
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Subject: userID,
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Audience: jwt.ClaimStrings{c.AppID},
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IssuedAt: jwt.NewNumericDate(now),
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NotBefore: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(1 * time.Hour)),
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ID: fmt.Sprintf("%s-%d", userID, now.Unix()),
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},
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Room: room,
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Moderator: moderator,
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Context: &JitsiContext{
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User: &JitsiUser{
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ID: userID,
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Name: userName,
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Avatar: avatar,
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},
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(c.Secret))
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}
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