Figure out on which distribution we are running.
authorMichael Tremer <michael.tremer@ipfire.org>
Sun, 22 Jun 2014 10:33:32 +0000 (10:33 +0000)
committerMichael Tremer <michael.tremer@ipfire.org>
Sun, 22 Jun 2014 10:33:32 +0000 (10:33 +0000)
src/ddns/system.py

index 3342f9d..af45262 100644 (file)
@@ -47,6 +47,10 @@ class DDNSSystem(object):
                # Connection to the core of the program.
                self.core = core
 
+               # Find out on which distribution we are running.
+               self.distro = self._get_distro_identifier()
+               logger.debug(_("Running on distribution: %s") % self.distro)
+
        @property
        def proxy(self):
                proxy = self.core.settings.get("proxy")
@@ -257,3 +261,73 @@ class DDNSSystem(object):
                                addresses.append(address)
 
                return addresses
+
+       def _get_distro_identifier(self):
+               """
+                       Returns a unique identifier for the distribution
+                       we are running on.
+               """
+               os_release = self.__parse_os_release()
+               if os_release:
+                       return os_release
+
+               system_release = self.__parse_system_release()
+               if system_release:
+                       return system_release
+
+               # If nothing else could be found, we return
+               # just "unknown".
+               return "unknown"
+
+       def __parse_os_release(self):
+               """
+                       Tries to parse /etc/os-release and
+                       returns a unique distribution identifier
+                       if the file exists.
+               """
+               try:
+                       f = open("/etc/os-release", "r")
+               except IOError, e:
+                       # File not found
+                       if e.errno == 2:
+                               return
+
+                       raise
+
+               os_release = {}
+               with f:
+                       for line in f.readlines():
+                               m = re.match(r"^([A-Z\_]+)=(.*)$", line)
+                               if m is None:
+                                       continue
+
+                               os_release[m.group(1)] = m.group(2)
+
+               try:
+                       return "%(ID)s-%(VERSION_ID)s" % os_release
+               except KeyError:
+                       return
+
+       def __parse_system_release(self):
+               """
+                       Tries to parse /etc/system-release and
+                       returns a unique distribution identifier
+                       if the file exists.
+               """
+               try:
+                       f = open("/etc/system-release", "r")
+               except IOError, e:
+                       # File not found
+                       if e.errno == 2:
+                               return
+
+                       raise
+
+               with f:
+                       # Read first line
+                       line = f.readline()
+
+                       # Check for IPFire systems
+                       m = re.match(r"^IPFire (\d).(\d+)", line)
+                       if m:
+                               return "ipfire-%s" % m.group(1)