mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-21 14:35:22 +08:00
Nic Klaassen
2fa88f4a86
* azure devops support in new join service * return proper error on failed gRPC Send * fix lint * add comments * elaborate in comment
132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
/*
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* Teleport
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* Copyright (C) 2025 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package azuredevops
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import (
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"context"
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"net/url"
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"strings"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/lib/oidc"
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)
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// audience is the static value that Azure DevOps uses for the `aud` claim in
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// issued ID Tokens. Unfortunately, this cannot be changed.
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const audience = "api://AzureADTokenExchange"
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func issuerURL(
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organizationID string,
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overrideHost string,
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insecure bool,
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) string {
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scheme := "https"
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if insecure {
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scheme = "http"
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}
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host := "vstoken.dev.azure.com"
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if overrideHost != "" {
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host = overrideHost
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}
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issuerURL := url.URL{
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Scheme: scheme,
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Host: host,
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}
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return issuerURL.JoinPath(organizationID).String()
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}
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// IDTokenValidator validates an Azure Devops issued ID Token.
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type IDTokenValidator struct {
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insecureDiscovery bool
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overrideDiscoveryHost string
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}
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// NewIDTokenValidator returns an initialized IDTokenValidator
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func NewIDTokenValidator() *IDTokenValidator {
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return &IDTokenValidator{}
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}
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// Validate validates an Azure Devops issued ID token.
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func (id *IDTokenValidator) Validate(
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ctx context.Context, organizationID, token string,
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) (*IDTokenClaims, error) {
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issuer := issuerURL(
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organizationID, id.overrideDiscoveryHost, id.insecureDiscovery,
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)
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claims, err := oidc.ValidateToken[*IDTokenClaims](ctx, issuer, audience, token)
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if err != nil {
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return nil, trace.Wrap(err, "validating token")
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}
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parsed, err := parseSubClaim(claims.Sub)
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if err != nil {
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return nil, trace.Wrap(err, "parsing sub claim")
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}
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claims.OrganizationName = parsed.organizationName
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claims.ProjectName = parsed.projectName
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claims.PipelineName = parsed.pipelineName
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if claims.OrganizationID != organizationID {
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return nil, trace.BadParameter(
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"organization ID in token (%s) does not match configured (%s)",
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claims.OrganizationID, organizationID,
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)
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}
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return claims, nil
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}
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type parsedSubClaim struct {
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organizationName string
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projectName string
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pipelineName string
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}
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func parseSubClaim(sub string) (parsedSubClaim, error) {
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parsed, err := url.Parse(sub)
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if err != nil {
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return parsedSubClaim{}, trace.Wrap(err, "parsing as url")
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}
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// Special p:// scheme indicates this is a Pipeline ID token rather than
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// a service connection ID token (which starts sc://).
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if parsed.Scheme != "p" {
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return parsedSubClaim{}, trace.BadParameter(
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"id token is not of pipeline kind (sub: %q)", sub,
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)
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}
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out := parsedSubClaim{organizationName: parsed.Host}
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// Now we need to handle the path, which is something like
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// /project-name/pipeline-name
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path, _ := strings.CutPrefix(parsed.Path, "/")
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split := strings.Split(path, "/")
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if len(split) != 2 {
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return parsedSubClaim{}, trace.BadParameter(
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"subject malformed, expected 2 path elements (sub: %q)", sub,
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)
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}
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out.projectName = split[0]
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out.pipelineName = split[1]
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return out, nil
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}
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