76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
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package lsf
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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"github.com/pkg/errors"
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)
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type Session struct {
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SID string
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}
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func (s *Session) Valid() (bool, error) {
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client := &http.Client{}
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req, err := http.NewRequest("GET", "https://lsf.hs-worms.de/qisserver/rds?state=user&type=8&topitem=functions&breadCrumbSource=portal", nil)
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if err != nil {
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return false, errors.Wrap(err, "could not prepare the request")
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}
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req.Header.Add("Cookie", fmt.Sprintf("JSESSIONID=%s", s.SID))
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resp, err := client.Do(req)
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if err != nil {
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return false, errors.Wrap(err, "could not do the request")
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}
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b, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return false, errors.Wrap(err, "could not read the response body")
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}
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if strings.Contains(string(b), "<u>L</u>ogout") {
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return true, nil
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}
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if strings.Contains(string(b), "<u>L</u>ogin") {
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return false, nil
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}
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return false, errors.New("unexpected response body")
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}
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func Login(username, password string) (*Session, error) {
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client := &http.Client{
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CheckRedirect: func(req *http.Request, via []*http.Request) error { // don't follow redirects
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return http.ErrUseLastResponse
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},
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}
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form := url.Values{}
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form.Add("asdf", username) // who wrote this backend? lol
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form.Add("fdsa", password)
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form.Add("submit", "Login")
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req, err := http.NewRequest("POST", "https://lsf.hs-worms.de/qisserver/rds?state=user&type=1&category=auth.login&startpage=portal.vm&breadCrumbSource=portal", strings.NewReader(form.Encode()))
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req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
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if err != nil {
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return nil, errors.Wrap(err, "could not prepare the login request")
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, errors.Wrap(err, "could not do the login request")
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}
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if resp.StatusCode == 302 {
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for _, c := range resp.Cookies() {
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if c.Name == "JSESSIONID" {
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return &Session{
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SID: c.Value,
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}, nil
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}
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}
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return nil, errors.New("no session cookie found")
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}
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if resp.StatusCode == 200 {
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return nil, errors.New("wrong credentials") // TODO or other errors
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}
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return nil, errors.New("unexpected response status code")
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}
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