1 files changed, 18 insertions, 0 deletions
diff --git a/gitlint-core/gitlint/contrib/rules/signedoff_by.py b/gitlint-core/gitlint/contrib/rules/signedoff_by.py
new file mode 100644
index 0000000..139a1b1
--- /dev/null
+++ b/gitlint-core/gitlint/contrib/rules/signedoff_by.py
@@ -0,0 +1,18 @@
+
+from gitlint.rules import CommitRule, RuleViolation
+
+
+class SignedOffBy(CommitRule):
+    """ This rule will enforce that each commit body contains a "Signed-off-by" line.
+    We keep things simple here and just check whether the commit body contains a line that starts with "Signed-off-by".
+    """
+
+    name = "contrib-body-requires-signed-off-by"
+    id = "CC1"
+
+    def validate(self, commit):
+        for line in commit.message.body:
+            if line.lower().startswith("signed-off-by"):
+                return []
+
+        return [RuleViolation(self.id, "Body does not contain a 'Signed-off-by' line", line_nr=1)]