Change maintainer lookup in contact-maintainers to use PTS

The current implementation depends on apt-cache and may use stale
information depending on the local APT configuration.  If squeeze
source packages are enabled in order to work on squeeze-lts, this may
pick up the maintainers from those packages.

Use rdflib to parse the maintainer names and addresses from the PTS.
As a fallback, if rdflib is not available, use the PTS alias for the
package maintainers.

The PTS does not separate Maintainer and Uploaders, so remove this
distinction from the script and templates.


git-svn-id: svn+ssh://svn.debian.org/svn/secure-testing@38613 e39458fd-73e7-0310-bf30-c45bca0a0e42

3 files changed, 36 insertions, 22 deletions

diff --git a/bin/contact-maintainers b/bin/contact-maintainers
index 152665ada8..19ece28d3b 100755
--- a/bin/contact-maintainers
+++ b/bin/contact-maintainers
@@ -6,6 +6,7 @@ import pwd
 import subprocess
 import sys
 import tempfile
+import warnings
 
 from jinja2 import Template
 
@@ -17,22 +18,43 @@ def get_full_name():
     return pwd.getpwuid(os.getuid()).pw_gecos.split(',')[0].decode('utf-8')
 
 
-def get_source_field(pkg, name):
-    # XXX: retrieve data in a more reliable way
-    cmd = 'apt-cache showsrc {}|grep ^{}:|tail -n 1'.format(
-        pkg, name.capitalize())
-    output = subprocess.check_output(cmd, shell=True).strip()
-    if output:
-        return output.decode('utf-8').split(': ')[1]
-    return ''
+try:
+    import rdflib
 
+except ImportError:
+    warnings.warn('python-rdflib not installed; will fall back to PTS email address')
+    def get_maintainers(pkg):
+        return u'{}@packages.debian.org'.format(pkg)
 
-def get_maintainer(pkg):
-    return get_source_field(pkg, 'Maintainer')
+else:
+    def get_maintainers(pkg):
+        import re, urllib
 
+        # RDF object and predicate references used on PTS
+        project = rdflib.term.URIRef(u'http://packages.qa.debian.org/{}#project'.format(pkg))
+        has_contributor = rdflib.term.URIRef(u'http://schema.org/contributor')
+        is_named = rdflib.term.URIRef(u'http://xmlns.com/foaf/0.1/name')
+        is_same_as = rdflib.term.URIRef(u'http://www.w3.org/2002/07/owl#sameAs')
 
-def get_uploaders(pkg):
-    return get_source_field(pkg, 'Uploaders')
+        maint = []
+
+        graph = rdflib.Graph()
+        graph.parse('https://packages.qa.debian.org/{}/{}.rdf'.format(pkg[0], pkg))
+        for contrib in graph[project : has_contributor]:
+            names = [n for n in graph[contrib : is_named]]
+            addresses = [urllib.unquote(m.group(1)) for m in
+                         map(re.compile(r'http://webid\.debian\.net/maintainers/(.*)#agent$').match,
+                             graph[contrib : is_same_as])
+                         if m]
+            if not names or not addresses:
+                warnings.warn('found contributor missing name and/or address')
+                continue
+            address = addresses[0]
+            if '@' not in address:
+                address += '@debian.org'
+            maint.append(u'"{}" <{}>'.format(names[0], address))
+
+        return u', '.join(maint)
 
 
 # Parse command line
@@ -75,9 +97,9 @@ context = {
     'package': args.package,
     'sender': get_full_name(),
     'cve': args.cve,
-    'to': get_maintainer(args.package),
+    'to': get_maintainers(args.package),
     'cc': cc,
-    'uploaders': get_uploaders(args.package),
+    'uploaders': ''
 }
 
 # Generate the mail
diff --git a/templates/lts-no-dsa.txt b/templates/lts-no-dsa.txt
index 4ca8ebfd9e..d9ee6b50d0 100644
--- a/templates/lts-no-dsa.txt
+++ b/templates/lts-no-dsa.txt
@@ -2,10 +2,6 @@ To: {{ to }}
 Cc: {{ cc }}
 Subject: About the security issues affecting {{ package }} in Squeeze
 
-# XXX: Decide whether you want to put some of those persons in copy and
-# then drop this comment
-# Uploaders: {{ uploaders}}
-
 Hello dear maintainer(s),
 
 the Debian LTS team recently reviewed the security issue(s) affecting your
diff --git a/templates/lts-update-planned.txt b/templates/lts-update-planned.txt
index 2fba69f3fc..6ccd37688f 100644
--- a/templates/lts-update-planned.txt
+++ b/templates/lts-update-planned.txt
@@ -2,10 +2,6 @@ To: {{ to }}
 Cc: {{ cc }}
 Subject: squeeze update of {{ package }}?
 
-# XXX: Decide whether you want to put some of those persons in copy and
-# then drop this comment
-# Uploaders: {{ uploaders}}
-
 Hello dear maintainer(s),
 
 the Debian LTS team would like to fix the security issues which are