Add dependencies licenses check.

.github/workflows/check.yml

@@ -55,6 +55,9 @@ jobs:
     - name: Run crates update
       run: bin/check/crates.sh 
 
+    - name: Check crates licence
+      run: python3 bin/check/license.py
+
     - name: Check CHANGELOG
       run: bin/check/changelog.sh
 

bin/check/license.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python3
+from typing import List, Tuple
+
+import json
+import subprocess
+
+
+def main():
+    deps = get_deps()
+    check_licenses(deps)
+
+
+def is_authorized(license: str) -> bool:
+    for l in ["MIT", "Apache-2.0", "Zlib", "CC0-1.0", "MPL-2.0", "BSD-3-Clause"]:
+        if l in license:
+            return True
+    return False
+
+
+def is_forbidden(license: str) -> bool:
+    for l in ["GNU"]:
+        if l in license:
+            return True
+    return False
+
+
+def check_licenses(deps: List[Tuple[str, str, str, str]]):
+    authorized = []
+    forbidden = []
+    unknown = []
+    for dep in deps:
+        lic = dep[3]
+        if is_authorized(lic):
+            authorized.append(dep)
+        elif is_forbidden(lic):
+            forbidden.append(dep)
+        else:
+            unknown.append(dep)
+    print("Authorized:")
+    for (name, repository, version, lic) in authorized:
+        name_str = f"\x1b[1;34m{name}\x1b[0m"
+        lic_str = f"\x1b[1;32m{lic}\x1b[0m"
+        print(f"  {name_str} {version} {repository}: {lic_str}")
+
+    print("Forbidden:")
+    for (name, repository, version, lic) in forbidden:
+        name_str = f"\x1b[1;34m{name}\x1b[0m"
+        lic_str = f"\x1b[1;31m{lic}\x1b[0m"
+        print(f"  {name_str} {version} {repository}: {lic_str}")
+
+    print("Unknown:")
+    for (name, repository, version, lic) in forbidden:
+        name_str = f"\x1b[1;34m{name}\x1b[0m"
+        lic_str = f"\x1b[1;33m{lic}\x1b[0m"
+        print(f"  {name_str} {version} {repository}: {lic_str}")
+
+    if len(forbidden) > 0 or len(unknown) > 0:
+        print("There are not authorized licenses")
+        exit(1)
+
+
+def get_deps() -> List[Tuple[str, str, str, str]]:
+    """Returns a list of crates name and licenses"""
+    p = subprocess.run(
+        [
+            "cargo",
+            "metadata",
+            "--format-version",
+            "1",
+        ],
+        capture_output=True,
+        text=True,
+    )
+    if p.returncode != 0:
+        print("Error calling cargo metadata")
+        exit(1)
+    data = json.loads(p.stdout)
+    packages = data["packages"]
+    licenses = [
+        (p["name"], p["repository"], p["version"], p["license"]) for p in packages
+    ]
+    return licenses
+
+
+if __name__ == "__main__":
+    main()