[PATCH 2/2] patchwork-bot: Add --pwhash for debugging

[Kees Cook <keescook@chromium.org>]

Finding a 2-character whitespace difference between patches with different
patchwork hashes strained my sanity, so I want to keep the tooling I
built to track it down. Using "--pwhash PATCH-ID", patchwork-bot will
compare the given patch in patchwork (and its hash) against the diff
from stdin (and its hash).

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 git-patchwork-bot.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/git-patchwork-bot.py b/git-patchwork-bot.py
index 4e10385de629..980928cf7b60 100755
--- a/git-patchwork-bot.py
+++ b/git-patchwork-bot.py
@@ -1363,6 +1363,8 @@ if __name__ == '__main__':
                         help='Domain to use when creating message-ids')
     parser.add_argument('--ancestors', default=None,
                         help='During initial database creation, consider this many ancestor commits as fresh')
+    parser.add_argument('--pwhash', default=None, type=int, metavar='PATCH-ID',
+                        help='Debug pwhash mismatches. Compare patchwork hash of diff from stdin to patch id')
 
     cmdargs = parser.parse_args()
 
@@ -1411,6 +1413,24 @@ if __name__ == '__main__':
     if not os.path.isdir(CACHEDIR):
         os.makedirs(CACHEDIR, exist_ok=True)
 
+    if cmdargs.pwhash:
+        diff = sys.stdin.read()
+        pwhash = get_patchwork_hash(diff)
+        print(pwhash)
+        for pw in CONFIG['patchworks']:
+            print(f"Patchwork: {pw}")
+            for pname, psettings in CONFIG['patchworks'][pw]['projects'].items():
+                print(f"Project: {pname}")
+                project, rm, rpc, pconfig = project_by_name(pname)
+                project_id = project['id']
+                print(get_patchwork_patches_by_project_id_hash(rpc, project_id, pwhash))
+                print('-------')
+                p = rm.get_patch(cmdargs.pwhash)
+                pwdiff = p.get('diff')
+                print(pwdiff)
+                print(get_patchwork_hash(pwdiff))
+        sys.exit(0)
+
     if cmdargs.housekeeping:
         for _pserver, _sconfig in CONFIG['patchworks'].items():
             for _pname in _sconfig['projects']:
-- 
2.30.2