bundles/sshmon: add check_forgejo_for_new_release

bundles/sshmon/files/check_forgejo_for_new_release

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+
+
+from sys import argv, exit
+
+from requests import get
+
+try:
+    # Arch Linux (possibly future Ubuntu releases)
+    from packaging.version import parse
+except ModuleNotFoundError:
+    # Debian
+    from setuptools._vendor.packaging.version import parse
+
+
+assert (
+    len(argv) >= 4
+), "Usage: check_forgejo_for_new_release <host> <repo> <version> [tag prefix]"
+
+host = argv[1]
+repo = argv[2]
+current_version = argv[3]
+if len(argv) >= 5:
+    tag_prefix = argv[4]
+else:
+    tag_prefix = ""
+
+try:
+    r = get(
+        "https://{}/api/v1/repos/{}/releases".format(host, repo),
+        headers={"Accept": "application/json"},
+    )
+    r.raise_for_status()
+
+    releases = r.json()
+
+    newest_release = None
+
+    for i in releases:
+        if i["tag_name"].startswith(tag_prefix):
+            if (
+                newest_release is None
+                or parse(i["tag_name"]) > parse(newest_release["tag_name"])
+            ) and not (i["prerelease"] or i["draft"]):
+                newest_release = i
+
+    assert newest_release is not None, "Could not determine latest release"
+
+    if parse(newest_release["tag_name"]) > parse(current_version):
+        print(
+            "There is a newer version available: {} (currently installed: {})".format(
+                newest_release["tag_name"], current_version
+            )
+        )
+        exit(2)
+    else:
+        print(
+            "Currently installed version {} matches newest release on github".format(
+                current_version
+            )
+        )
+        exit(0)
+except Exception as e:
+    print(repr(e))
+    exit(3)