analyzer/linux: Fix get_proc_status parsing (#2769)

* analyzer/linux: Fix get_proc_status parsing

When parsing the `/proc/<id>/status` file some field are empty
which made the dict() conversion fail because the list length was 1.

With this change, we are spliting on the ":" character and striping
the key and the value so we can get the key without the ":" at the end and
the value without any "\t" at the beginning or "\n" at the end.

* analyzer/linux: convert parent process id (PPid) to int

Author: nalves599

analyzer/linux/lib/api/process.py

@@ -25,18 +25,18 @@ def is_alive(self):
         status = self.get_proc_status()
         if not status:
             return False
-        if "zombie" in status.get("State:", ""):
+        if "zombie" in status.get("State", ""):
             return False
         return True
 
     def get_parent_pid(self):
-        return self.get_proc_status().get("PPid")
+        return int(self.get_proc_status().get("PPid"))
 
     def get_proc_status(self):
         try:
             with open(f"/proc/{self.pid}/status") as f:
                 status = f.readlines()
-            status_values = dict([j.strip().split(maxsplit=1) for j in status])
+            status_values = dict([tuple(map(str.strip, j.split(':',1))) for j in status])
             return status_values
         except Exception:
             log.critical("Could not get process status for pid %s", self.pid)