101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package providers
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"github.com/bitly/go-simplejson"
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"golang.org/x/oauth2"
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)
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const (
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tokenTypeBearer = "Bearer"
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tokenTypeToken = "token"
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acceptHeader = "Accept"
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acceptApplicationJSON = "application/json"
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)
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func makeAuthorizationHeader(prefix, token string, extraHeaders map[string]string) http.Header {
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header := make(http.Header)
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for key, value := range extraHeaders {
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header.Add(key, value)
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}
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header.Set("Authorization", fmt.Sprintf("%s %s", prefix, token))
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return header
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}
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func makeOIDCHeader(accessToken string) http.Header {
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// extra headers required by the IDP when making authenticated requests
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extraHeaders := map[string]string{
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acceptHeader: acceptApplicationJSON,
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}
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return makeAuthorizationHeader(tokenTypeBearer, accessToken, extraHeaders)
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}
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func makeLoginURL(p *ProviderData, redirectURI, state string, extraParams url.Values) url.URL {
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a := *p.LoginURL
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params, _ := url.ParseQuery(a.RawQuery)
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params.Set("redirect_uri", redirectURI)
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if p.AcrValues != "" {
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params.Add("acr_values", p.AcrValues)
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}
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if p.Prompt != "" {
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params.Set("prompt", p.Prompt)
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} else { // Legacy variant of the prompt param:
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params.Set("approval_prompt", p.ApprovalPrompt)
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}
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params.Add("scope", p.Scope)
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params.Set("client_id", p.ClientID)
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params.Set("response_type", "code")
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params.Add("state", state)
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for n, p := range extraParams {
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for _, v := range p {
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params.Add(n, v)
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}
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}
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a.RawQuery = params.Encode()
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return a
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}
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// getIDToken extracts an IDToken stored in the `Extra` fields of an
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// oauth2.Token
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func getIDToken(token *oauth2.Token) string {
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idToken, ok := token.Extra("id_token").(string)
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if !ok {
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return ""
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}
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return idToken
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}
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// formatGroup coerces an OIDC groups claim into a string
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// If it is non-string, marshal it into JSON.
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func formatGroup(rawGroup interface{}) (string, error) {
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if group, ok := rawGroup.(string); ok {
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return group, nil
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}
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jsonGroup, err := json.Marshal(rawGroup)
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if err != nil {
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return "", err
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}
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return string(jsonGroup), nil
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}
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// coerceArray extracts a field from simplejson.Json that might be a
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// singleton or a list and coerces it into a list.
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func coerceArray(sj *simplejson.Json, key string) []interface{} {
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array, err := sj.Get(key).Array()
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if err == nil {
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return array
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}
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single := sj.Get(key).Interface()
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if single == nil {
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return nil
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}
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return []interface{}{single}
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}
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