citadel-core/app/lib/citadelutils.py
2021-10-22 16:56:27 +01:00

62 lines
2.3 KiB
Python

# SPDX-FileCopyrightText: 2021 Aaron Dewes <aaron.dewes@protonmail.com>
#
# SPDX-License-Identifier: AGPL-3.0-or-later
import re
# Helper functions
# Return a list of env vars in a string, supports both $NAM§ and ${NAME} format for the env var
# This can potentially be used to get around permissions, so this check is critical for security
# Please report any security vulnerabilities you find in this check to aaron.dewes@protonmail.com
def getEnvVars(string: str):
string = str(string)
envVars = re.findall(r'\$\{.*?\}', string)
newEnvVars = re.findall(r"\$(?!{)([A-z1-9]+)", string)
return [envVar[2:-1] for envVar in envVars] + newEnvVars
# Check if an array only contains values which are also in another array
def checkArrayContainsAllElements(array: list, otherArray: list):
for element in array:
if element not in otherArray:
return False
return True
# Parse a dotenv file
# Values can either be KEY=VALUE or KEY="VALUE" or KEY='VALUE'
# Returns all env vars as a dict
def parse_dotenv(file_path):
envVars: dict = {}
with open(file_path, 'r') as file:
for line in file:
line = line.strip()
if line.startswith('#') or len(line) == 0:
continue
if '=' in line:
key, value = line.split('=', 1)
value = value.strip('"').strip("'")
envVars[key] = value
else:
print("Error: Invalid line in {}: {}".format(file_path, line))
print("Line should be in the format KEY=VALUE or KEY=\"VALUE\" or KEY='VALUE'")
exit(1)
return envVars
# Combines two objects
# If the key exists in both objects, the value of the second object is used
# If the key does not exist in the first object, the value from the second object is used
# If a key contains a list, the second object's list is appended to the first object's list
# If a key contains another object, these objects are combined
def combineObjects(obj1: dict, obj2: dict):
for key in obj2:
if key in obj1:
if isinstance(obj1[key], list):
obj1[key] = obj1[key] + obj2[key]
elif isinstance(obj1[key], dict):
obj1[key] = combineObjects(obj1[key], obj2[key])
else:
obj1[key] = obj2[key]
else:
obj1[key] = obj2[key]
return obj1