👽 Adding explicit switch to user mode for persons who have also a...

👽 Adding explicit switch to user mode for persons who have also a different role, e.g., as teaching staff

campus.py

@@ -15,6 +15,8 @@ headers = {
                   + '(KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36'
 }
 
+main_page = 'https://www.campo.fau.de/qisserver/pages/cs/sys/portal/hisinoneStartPage.faces'
+
 url_exams_page = 'https://www.campo.fau.de/qisserver/pages/sul/examAssessment/personExamsReadonly.xhtml?' \
     '_flowId=examsOverviewForPerson-flow&_flowExecutionKey=e1s1'
 
@@ -33,7 +35,7 @@ class Connection:
         colorama_init(autoreset=True)
 
     def __enter__(self):
-        self.s = requests.session()
+        self.s = requests.Session()
         with ExitStack() as stack:
             stack.enter_context(self.s)
             self._stack = stack.pop_all()
@@ -65,8 +67,8 @@ class Connection:
         return r
 
     def __post(self, url, data):
-        print_info(f"get {urlparse(url).netloc}")
-        r = self.s.post(url, data=data, headers=headers, timeout=5)
+        print_info(f"post {urlparse(url).netloc}")
+        r = self.s.post(url, data=data, headers=headers, timeout=10)
         r.raise_for_status()
         return r
 
@@ -80,6 +82,7 @@ class Connection:
                 if not success:
                     return False
 
+                self.__switch_to_student()
                 self.__expand_rows()
 
                 return True
@@ -119,6 +122,32 @@ class Connection:
         return True
 
 
+    def __switch_to_student(self):
+        # Get authenticity token
+        raw_site = self.__get(main_page)
+        dom = fromstring(raw_site.text)
+        self.authenticity_token = dom.xpath('//input[@name=\'authenticity_token\']/@value')[0]
+        self.view_state = dom.xpath('//input[@name=\'javax.faces.ViewState\']/@value')[0]
+
+        # Switch user to student mode
+        data = {
+            'authenticity_token': self.authenticity_token,
+            'navigationPosition': 'link_homepage',
+            'widgetRender:11:roleSwitcherForm:roles_input': '475395',  # Student id
+            'widgetRender:11:roleSwitcherForm:roles_focus': '',
+            'widgetRender:11:roleSwitcherForm:roles_filter': '',
+            'widgetRender:11:roleSwitcherForm_SUBMIT': '1',
+            'autoScroll': '0,0',
+            'refreshButtonClickedId': '',
+            'DISABLE_VALIDATION': 'true',
+            'javax.faces.ViewState': self.view_state,
+            'widgetRender:11:roleSwitcherForm:_idcl': 'widgetRender:11:roleSwitcherForm:j_id_4d_3_b_r_2_1_3_1_1_5_1_1',
+            'activePageElementId': 'widgetRender:11:roleSwitcherForm:j_id_4d_3_b_r_2_1_3_1_1_5_1_1'
+        }
+
+        self.__post(main_page, data)
+
+
     def __expand_rows(self):
         # Get authenticity token
         raw_site = self.__get(url_exams_page)
@@ -151,7 +180,7 @@ class Connection:
         self.__post(url_exams_page, data)
 
 
-    def __read_grades(self):
+    def __read_grades(self):        
         # Open grades page
         raw_site = self.__get(url_exams_page)
         dom = fromstring(raw_site.text)