retrace server: guess release if 'os_release' file is missing

2 files changed, 42 insertions, 15 deletions

diff --git a/src/retrace/retrace.py b/src/retrace/retrace.py
index 46adb740..cc67f62f 100644
--- a/src/retrace/retrace.py
+++ b/src/retrace/retrace.py
@@ -25,6 +25,10 @@ RELEASE_PARSERS = {
   "fedora": re.compile("^Fedora[^0-9]+([0-9]+)[^\(]\(([^\)]+)\)$"),
 }
 
+GUESS_RELEASE_PARSERS = {
+  "fedora": re.compile("\.fc([0-9]+)"),
+}
+
 TASKPASS_ALPHABET = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
 CONFIG_FILE = "/etc/abrt/retrace.conf"
@@ -109,6 +113,14 @@ def guess_arch(coredump_path):
 
     return None
 
+def guess_release(package):
+    for distro in GUESS_RELEASE_PARSERS.keys():
+        match = GUESS_RELEASE_PARSERS[distro].search(package)
+        if match:
+            return distro, match.group(1)
+
+    return None, None
+
 def gen_task_password(taskdir):
     generator = random.SystemRandom()
     taskpass = ""
diff --git a/src/retrace/worker.py b/src/retrace/worker.py
index 2bb33237..f7381c72 100755
--- a/src/retrace/worker.py
+++ b/src/retrace/worker.py
@@ -68,6 +68,16 @@ if __name__ == "__main__":
         LOG.close()
         sys.exit(16)
 
+    # read package file
+    try:
+        package_file = open("%s/crash/package" % savedir, "r")
+        crash_package = package_file.read()
+        package_file.close()
+    except Exception as ex:
+        LOG.write("Unable to read crash package from 'package' file: %s.\n" % ex)
+        LOG.close()
+        sys.exit(17)
+
     # read release, distribution and version from release file
     release_path = "%s/crash/os_release" % savedir
     if not os.path.isfile(release_path):
@@ -77,23 +87,28 @@ if __name__ == "__main__":
         release_file = open(release_path, "r")
         release = release_file.read()
         release_file.close()
-    except Exception as ex:
-        LOG.write("Unable to read distribution and version from 'release' file: %s.\n" % ex)
-        LOG.close()
-        sys.exit(17)
 
-    version = distribution = None
-    for distro in RELEASE_PARSERS.keys():
-        match = RELEASE_PARSERS[distro].match(release)
-        if match:
-            version = match.group(1)
-            distribution = distro
-            break
+        version = distribution = None
+        for distro in RELEASE_PARSERS.keys():
+            match = RELEASE_PARSERS[distro].match(release)
+            if match:
+                version = match.group(1)
+                distribution = distro
+                break
 
-    if not version or not distribution:
-        LOG.write("Release '%s' is not supported.\n" % release)
-        LOG.close()
-        sys.exit(18)
+        if not version or not distribution:
+            raise Exception, "Release '%s' is not supported.\n"
+
+    except Exception as ex:
+        LOG.write("Unable to read distribution and version from 'release' file: %s.\n" % ex)
+        LOG.write("Trying to guess distribution and version... ")
+        distribution, version = guess_release(crash_package)
+        if distribution and version:
+            LOG.write("%s-%s\n" % (distribution, version))
+        else:
+            LOG.write("Failure\n")
+            LOG.close()
+            sys.exit(18)
 
     # read package file
     try: