Get NVTICACHE_STR used by openvassd.

This string is used to find the db in redis that stored the nvti cache.

ospd_openvas/nvticache.py

@@ -29,11 +29,33 @@
 from __future__ import absolute_import
 from __future__ import print_function
 
+import subprocess
+from shutil import which
 import xml.etree.ElementTree as ET
 import ospd_openvas.openvas_db as openvas_db
 
-
-NVTICACHE_STR = 'nvticache10'
+NVTICACHE_STR = ""
+
+def set_nvticache_str():
+    """ Get NVTICACHE_STR. """
+    global NVTICACHE_STR
+
+    try:
+        openvassd_bin = which('openvassd')
+        result = subprocess.check_output([openvassd_bin, '-V', '--scan-start=1'], shell=False,
+                                         stderr=subprocess.STDOUT)
+        result = result.decode('ascii')
+    except OSError:
+        # The command is not available
+        return 1
+
+    if result is None:
+        return 1
+    version = result.split('\n')
+    if 'NVTI Cache version' in version[1]:
+        NVTICACHE_STR = version[1].split()[-1]
+    else:
+        NVTICACHE_STR = version[2].split()[-1]
 
 def get_feed_version():
     """ Get feed version.

ospd_openvas/wrapper.py

@@ -221,6 +221,11 @@ def __init__(self, certfile, keyfile, cafile):
                          'to find db_connection.')
             raise Exception
 
+        if nvti.set_nvticache_str():
+            logger.error('OpenVAS Error: Not possible '
+                         'to set NVTICACHE_STR.')
+            raise Exception
+
         ctx = openvas_db.db_find(nvti.NVTICACHE_STR)
         if not ctx:
             self.redis_nvticache_init()