4c57d201a4
The source headers, LICENSE files, and license metadata had drifted apart. Align the entire project to MIT: - Convert every source-file header to the MIT text across all comment styles (Go, TS, TSX, JS, MJS, SQL, CSS, GraphQL, shell), including SPDX-License-Identifier tags - Set the root and cookie-banner LICENSE files to the MIT text with a "MIT License" title line - Switch the package.json license fields, Docker image label, and cookie-banner README to MIT - Update docs and the genmodels header generator accordingly - Normalize copyright lines to a single format (Copyright (c) <year(s)> Probo Inc <hello@probo.com>.): unify the hello@getprobo.com and hello@probo.inc emails to hello@probo.com and the comma-separated years to a hyphenated range Genuine third-party references are intentionally left untouched: the Lucide icon attributions (Lucide is ISC) and the trivy dependency license allowlist. Signed-off-by: Sacha Al Himdani <sacha@probo.com>
115 lines
3.4 KiB
Go
115 lines
3.4 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package oauth2
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import (
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"crypto/rsa"
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"crypto/sha256"
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"encoding/base64"
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"time"
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"go.probo.inc/probo/pkg/coredata"
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"go.probo.inc/probo/pkg/gid"
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"go.probo.inc/probo/pkg/uri"
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)
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type (
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// SigningKey pairs an RSA private key with its key ID. All entries are
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// published in the JWKS endpoint. Keys with Active set to true are
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// used for signing new tokens; when multiple keys are active, the
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// service round-robins between them.
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SigningKey struct {
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PrivateKey *rsa.PrivateKey
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KID string
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Active bool
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}
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IDTokenClaims struct {
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Issuer uri.URI `json:"iss"`
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Subject string `json:"sub"`
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Audience string `json:"aud"`
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ExpiresAt int64 `json:"exp"`
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IssuedAt int64 `json:"iat"`
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AuthTime int64 `json:"auth_time"`
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Nonce string `json:"nonce,omitempty"`
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AtHash string `json:"at_hash,omitempty"`
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Email string `json:"email,omitempty"`
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EmailVerified *bool `json:"email_verified,omitempty"`
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Name string `json:"name,omitempty"`
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Scope coredata.OAuth2Scopes `json:"-"`
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}
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SigningKeys []SigningKey
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)
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// ComputeAtHash computes the at_hash claim value for an access token.
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// Per OIDC Core §3.1.3.6: left half of SHA-256 hash, base64url-encoded.
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func ComputeAtHash(accessToken string) string {
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h := sha256.Sum256([]byte(accessToken))
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return base64.RawURLEncoding.EncodeToString(h[:16])
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}
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func NewIDTokenClaims(
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issuer uri.URI,
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identityID gid.GID,
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clientID gid.GID,
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authTime time.Time,
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scopes coredata.OAuth2Scopes,
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nonce string,
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accessToken string,
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email string,
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emailVerified bool,
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fullName string,
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ttl time.Duration,
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) *IDTokenClaims {
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now := time.Now()
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claims := &IDTokenClaims{
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Issuer: issuer,
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Subject: identityID.String(),
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Audience: clientID.String(),
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ExpiresAt: now.Add(ttl).Unix(),
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IssuedAt: now.Unix(),
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AuthTime: authTime.Unix(),
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Scope: scopes,
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}
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if nonce != "" {
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claims.Nonce = nonce
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}
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if accessToken != "" {
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claims.AtHash = ComputeAtHash(accessToken)
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}
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for _, scope := range scopes {
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switch scope {
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case ScopeEmail:
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claims.Email = email
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claims.EmailVerified = &emailVerified
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case ScopeProfile:
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claims.Name = fullName
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}
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}
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return claims
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}
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