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oauth2-proxy/providers/azure.go

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package providers
import (
"errors"
"fmt"
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"github.com/bitly/go-simplejson"
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"github.com/bitly/oauth2_proxy/api"
"log"
"net/http"
"net/url"
)
type AzureProvider struct {
*ProviderData
Tenant string
}
func NewAzureProvider(p *ProviderData) *AzureProvider {
p.ProviderName = "Azure"
if p.ProfileURL == nil || p.ProfileURL.String() == "" {
p.ProfileURL = &url.URL{
Scheme: "https",
Host: "graph.windows.net",
Path: "/me",
RawQuery: "api-version=1.6",
}
}
if p.ProtectedResource == nil || p.ProtectedResource.String() == "" {
p.ProtectedResource = &url.URL{
Scheme: "https",
Host: "graph.windows.net",
}
}
if p.Scope == "" {
p.Scope = "openid"
}
return &AzureProvider{ProviderData: p}
}
func (p *AzureProvider) Configure(tenant string) {
p.Tenant = tenant
if tenant == "" {
p.Tenant = "common"
}
if p.LoginURL == nil || p.LoginURL.String() == "" {
p.LoginURL = &url.URL{
Scheme: "https",
Host: "login.microsoftonline.com",
Path: "/" + p.Tenant + "/oauth2/authorize"}
}
if p.RedeemURL == nil || p.RedeemURL.String() == "" {
p.RedeemURL = &url.URL{
Scheme: "https",
Host: "login.microsoftonline.com",
Path: "/" + p.Tenant + "/oauth2/token",
}
}
}
func getAzureHeader(access_token string) http.Header {
header := make(http.Header)
header.Set("Authorization", fmt.Sprintf("Bearer %s", access_token))
return header
}
func getEmailFromJSON(json *simplejson.Json) (string, error) {
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var email string
var err error
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email, err = json.Get("mail").String()
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if err != nil || email == "" {
otherMails, otherMailsErr := json.Get("otherMails").Array()
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if len(otherMails) > 0 {
email = otherMails[0].(string)
}
err = otherMailsErr
}
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return email, err
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}
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func (p *AzureProvider) GetEmailAddress(s *SessionState) (string, error) {
var email string
var err error
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if s.AccessToken == "" {
return "", errors.New("missing access token")
}
req, err := http.NewRequest("GET", p.ProfileURL.String(), nil)
if err != nil {
return "", err
}
req.Header = getAzureHeader(s.AccessToken)
json, err := api.Request(req)
if err != nil {
return "", err
}
email, err = getEmailFromJSON(json)
if err == nil && email != "" {
return email, err
}
email, err = json.Get("userPrincipalName").String()
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if err != nil {
log.Printf("failed making request %s", err)
return "", err
}
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if email == "" {
log.Printf("failed to get email address")
return "", err
}
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return email, err
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}