[OE-core] [PATCH] lib/oe/lsb: sanitise the distro identifier

[Ross Burton]

The distribution identifier is often used to create filenames, so it needs to be
safe to use as a filename.  Whilst most distributions have e.g. Fedora or Debian
as their name, it is possible that the name contains special characters.

To ensure this doesn't cause a problem strip out any non-alphanumerics from the
distribution name before returning it.

[ YOCTO #9443 ]

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/lib/oe/lsb.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/lib/oe/lsb.py b/meta/lib/oe/lsb.py
index ddfe71b..e0bdfba 100644
--- a/meta/lib/oe/lsb.py
+++ b/meta/lib/oe/lsb.py
@@ -62,6 +62,8 @@ def distro_identifier(adjust_hook=None):
     """Return a distro identifier string based upon lsb_release -ri,
        with optional adjustment via a hook"""
 
+    import re
+
     lsb_data = release_dict()
     if lsb_data:
         distro_id, release = lsb_data['Distributor ID'], lsb_data['Release']
@@ -76,6 +78,9 @@ def distro_identifier(adjust_hook=None):
         distro_id, release = adjust_hook(distro_id, release)
     if not distro_id:
         return "Unknown"
+    # Filter out any non-alphanumerics
+    distro_id = re.sub(r'\W', '', distro_id)
+
     if release:
         id_str = '{0}-{1}'.format(distro_id, release)
     else:
-- 
2.8.0.rc3