Rewrite making test certificates (#393)

Also updates obsolete curl dependencies with zlib.

tests/start_server.py

@@ -0,0 +1,108 @@
+#!/usr/bin/python3
+"""Wait for all tests certificate, compute leafhash"""
+
+import argparse
+import binascii
+import hashlib
+import os
+import pathlib
+import platform
+import subprocess
+import sys
+import time
+
+RESULT_PATH = os.getcwd()
+CERTS_PATH = os.path.join(RESULT_PATH, "./Testing/certs/")
+LOGS_PATH = os.path.join(RESULT_PATH, "./Testing/logs/")
+SERVER_LOG = os.path.join(LOGS_PATH, "./server.log")
+if platform.system() == 'Windows':
+    DEFAULT_PYTHON = "C:/Program Files/Python/Python311/pythonw.exe"
+    DEFAULT_PROG =  os.path.join(RESULT_PATH, "./Testing/server_http.pyw")
+else:
+    DEFAULT_PYTHON = "/usr/bin/python3"
+    DEFAULT_PROG =  os.path.join(RESULT_PATH, "./Testing/server_http.py")
+
+
+def compute_sha256(file_name) -> str:
+    """Compute a SHA256 hash of the leaf certificate (in DER form)"""
+
+    sha256_hash = hashlib.sha256()
+    file_path = os.path.join(CERTS_PATH, file_name)
+    with open(file_path, mode="rb") as file:
+        for bajt in iter(lambda: file.read(4096),b""):
+            sha256_hash.update(bajt)
+    return sha256_hash.hexdigest()
+
+def clear_catalog(certs_path) -> None:
+    """"Clear a test certificates catalog."""
+
+    if os.path.exists(certs_path):
+        #Remove old test certificates
+        for root, _, files in os.walk(certs_path):
+            for file in files:
+                os.remove(os.path.join(root, file))
+    else:
+        os.mkdir(certs_path)
+
+    # Generate 16 random bytes and convert to hex
+    random_hex = binascii.b2a_hex(os.urandom(16)).decode()
+    serial = os.path.join(certs_path, "./tsa-serial")
+    with open(serial, mode="w", encoding="utf-8") as file:
+        file.write(random_hex)
+
+def main() -> None:
+    """Wait for all tests certificate, compute leafhash"""
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--exe",
+        type=pathlib.Path,
+        default=DEFAULT_PYTHON,
+        help=f"the path to the python3 executable to use"
+        f"(default: {DEFAULT_PYTHON})",
+    )
+    parser.add_argument(
+        "--script",
+        type=pathlib.Path,
+        default=DEFAULT_PROG,
+        help=f"the path to the python script to run"
+        f"(default: {DEFAULT_PROG})",
+    )
+    args = parser.parse_args()
+    try:
+        clear_catalog(CERTS_PATH)
+        #pylint: disable=consider-using-with
+        subprocess.Popen([str(args.exe), str(args.script)])
+
+        cert_log = os.path.join(CERTS_PATH, "./cert.log")
+        while not (os.path.exists(cert_log) and os.path.getsize(cert_log) > 0):
+            time.sleep(1)
+
+        leafhash = compute_sha256("cert.der")
+        file_path = os.path.join(CERTS_PATH, "./leafhash.txt")
+        with open(file_path, mode="w", encoding="utf-8") as file:
+            file.write("SHA256:{}".format(leafhash))
+
+    except OSError as err:
+        with open(SERVER_LOG, mode="w", encoding="utf-8") as file:
+            file.write("OSError: {}".format(err))
+        sys.exit(1)
+
+    except Exception as err: # pylint: disable=broad-except
+        with open(SERVER_LOG, mode="w", encoding="utf-8") as file:
+            file.write("Error: {}".format(err))
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()
+
+
+# pylint: disable=pointless-string-statement
+"""Local Variables:
+    c-basic-offset: 4
+    tab-width: 4
+    indent-tabs-mode: nil
+End:
+    vim: set ts=4 expandtab:
+"""