Updated "sp info" output

Author: Ayuto

addons/source-python/packages/source-python/core/__init__.py

@@ -12,6 +12,8 @@
 from collections import defaultdict
 #   Contextlib
 from contextlib import contextmanager
+#   Hashlib
+import hashlib
 #   Inspect
 from inspect import getmodule
 from inspect import currentframe
@@ -63,7 +65,9 @@
            'PLATFORM',
            'SOURCE_ENGINE',
            'SOURCE_ENGINE_BRANCH',
+           'check_info_output',
            'console_message',
+           'create_checksum',
            'echo_console',
            'get_interface',
            'get_public_ip',
@@ -281,3 +285,47 @@ def intercepter(severity, msg):
         yield msg_buffer
     finally:
         OnServerOutput.manager.unregister_listener(intercepter)
+
+def create_checksum(data, ignore_wchars=True):
+    """Create an MD5 checksum for the given string.
+
+    :param str data:
+        The string for which a checksum should be created.
+    :param bool ignore_wchars:
+        If ``True`` whitespace characters are ignored.
+    :rtype: str
+    """
+    if ignore_wchars:
+        data = ''.join(data.split())
+
+    return hashlib.new('md5', bytes(data, encoding='utf-8')).hexdigest()
+
+def check_info_output(output):
+    """Return whether the output of ``sp info`` has been modified.
+
+    :param str output:
+        The output of ``sp info``.
+    :raise ValueError:
+        Raised if the checksum was not found in the output.
+    :return:
+        ``True`` if the output has been modified.
+    :rtype: bool
+    """
+    checksum = None
+    lines = output.strip().split('\n')
+
+    # Search the checksum entry
+    while lines:
+        line = lines.pop(0)
+        if line.startswith('Checksum'):
+            checksum = line.split(':', 1)[1].strip()
+            break
+
+    if checksum is None:
+        raise ValueError('Checksum not found.')
+
+    # Ignore last line if it's the separator
+    if lines[-1].startswith('-'):
+        lines.pop()
+
+    return create_checksum(''.join(lines)) != checksum

addons/source-python/packages/source-python/core/command/__init__.py

@@ -20,6 +20,7 @@
 from commands.typed import TypedServerCommand
 #   Core
 from core import core_logger
+from core import create_checksum
 from core import SOURCE_ENGINE_BRANCH
 from core.version import VERSION
 from core.version import GIT_COMMIT
@@ -148,9 +149,13 @@ def print_info(info):
         if info.url is not None:
             result += ', {}'.format(info.url)
 
-    result += '\n'
-
-    core_command_logger.log_message(result)
+    # Create a checksum for all the the essential information (from 'Date' to
+    # the last SP plugin)
+    checksum = create_checksum(result)
+    sep = '-' * 56
+    core_command_logger.log_message(
+        f'\nIMPORTANT: Please copy the full output.\n{sep}\n'
+        f'Checksum      : {checksum}{result}\n{sep}\n')
 
 
 # =============================================================================