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package main
import (
"flag"
eduvpn "github.com/jwijenbergh/eduvpn-common/src"
"golang.org/x/oauth2"
"io/ioutil"
"log"
"net/http"
"os/exec"
"strings"
)
func openBrowser(urlString string) {
log.Printf("OAuth: Initialized with AuthURL %s\n", urlString)
log.Println("OAuth: Opening browser with xdg-open...")
exec.Command("xdg-open", urlString).Start()
}
func constructConfig(urlString string) (*oauth2.Config, string) {
// Get the endpoints
endpoints, err := eduvpn.APIGetEndpoints(urlString)
if err != nil {
log.Fatal("Error API: cannot get endpoints. Message: ", err)
}
log.Printf("API: Got endpoints:\n- V3 API %s\n- V3 Authorization %s\n- V3 Token %s\n", endpoints.API.V3.Endpoint, endpoints.API.V3.AuthorizationEndpoint, endpoints.API.V3.TokenEndpoint)
// Start the OAuth procedure
config := &oauth2.Config{
RedirectURL: "http://127.0.0.1:8000/callback",
ClientID: "org.eduvpn.app.linux",
Scopes: []string{"config"},
Endpoint: oauth2.Endpoint{
AuthURL: endpoints.API.V3.AuthorizationEndpoint,
TokenURL: endpoints.API.V3.TokenEndpoint,
},
}
return config, endpoints.API.V3.Endpoint
}
func auth(urlString string) (*http.Client, string) {
// Get the config
oauthConfig, apiString := constructConfig(urlString)
// Initialize oauth with the config
eduOAuth, err := eduvpn.InitializeOAuth(oauthConfig)
if err != nil {
log.Fatal("Error OAuth: cannot initialize OAuth. Message: ", err)
}
// Open the browser
openBrowser(eduOAuth.AuthURL)
// Get and return authenticated client
client, err := eduOAuth.GetHTTPTokenClient()
if err != nil {
log.Fatal("Error OAUth: cannot get authenticated HTTP client. Message: ", err)
}
return client, apiString
}
func show_info(client *http.Client, apiString string) {
log.Println("OAUth: Got authenticated HTTP client")
resp, err := client.Get(apiString + "/info")
if err != nil {
panic(err)
}
defer resp.Body.Close()
bodyBytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
panic(err)
}
log.Println(string(bodyBytes))
}
func main() {
urlArg := flag.String("url", "", "The url of the vpn")
flag.Parse()
urlString := *urlArg
if urlString == "" {
log.Fatal("Error: -url is required")
}
if !strings.HasPrefix(urlString, "https://") {
urlString = "https://" + urlString
}
client, apiString := auth(urlString)
show_info(client, apiString)
}
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