bots: Get default repo from "origin" remote

bots/push-rewrite

@@ -32,7 +32,7 @@ def git(*args):
 
 def main():
     parser = argparse.ArgumentParser(description='Force push after a rewrite')
-    parser.add_argument('--repo', help="The GitHub repository to work with", default="cockpit-project/cockpit")
+    parser.add_argument('--repo', help="The GitHub repository to work with", default=None)
     parser.add_argument('remote', help='The remote to push to')
     parser.add_argument('branch', nargs='?',  help='The branch to push')
     opts = parser.parse_args()

bots/task/github.py

@@ -29,6 +29,8 @@
 import sys
 import time
 import urllib.parse
+import subprocess
+import re
 
 from . import cache
 
@@ -81,13 +83,20 @@ def write(self, value):
         with open(self.path, 'a') as f:
             f.write(value)
 
+def get_origin_repo():
+    res = subprocess.check_output([ "git", "remote", "get-url", "origin" ])
+    url = res.decode('utf-8').strip()
+    m = re.fullmatch("(git@github.com:|https://github.com/)(.*?)(\\.git)?", url)
+    if m:
+        return m.group(2)
+    raise RuntimeError("Not a GitHub repo: %s" % url)
+
 class GitHub(object):
     def __init__(self, base=None, cacher=None, repo=None):
         if base is None:
-            if repo is None:
-                repo = os.environ.get("GITHUB_BASE", "cockpit-project/cockpit")
+            self.repo = repo or os.environ.get("GITHUB_BASE", None) or get_origin_repo()
             netloc = os.environ.get("GITHUB_API", "https://api.github.com")
-            base = "{0}/repos/{1}/".format(netloc, repo)
+            base = "{0}/repos/{1}/".format(netloc, self.repo)
         self.url = urllib.parse.urlparse(base)
         self.conn = None
         self.token = None

bots/tests-trigger

@@ -62,7 +62,7 @@ def main():
                         help='Force setting the status even if the program logic thinks it shouldn''t be done')
     parser.add_argument('-a', '--allow', action='store_true', dest='allow',
                         help="Allow triggering for users that aren't whitelisted")
-    parser.add_argument('--repo', help="The repository to trigger the robots in", default="cockpit-project/cockpit")
+    parser.add_argument('--repo', help="The repository to trigger the robots in", default=None)
     parser.add_argument('pull', help='The pull request to trigger')
     parser.add_argument('context', nargs='?', help='The github task context to trigger')
     opts = parser.parse_args()