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addons/tfa-base/genluahashes.py

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+
+# Copyright (c) 2018-2021 TFA Base Devs
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import os, zlib
+
+targetPath = "lua/autorun/!tfa_base_crc_check.lua"
+
+hashCheckCode = '''if CLIENT then return end
+
+local hashes = {{
+{hashes}
+}}
+
+local function check_and_compare_files()
+	for file_name, crc_stored in pairs(hashes) do
+		if string.sub(file_name, 1, 4) == "lua/" then
+			file_name = string.sub(file_name, 5)
+		end
+
+		local file_contents = file.Read(file_name, "LUA")
+
+		if not file_contents or file_contents == "" then
+			print("[TFA Base] (CRC) An error occured while reading file '" .. file_name .. "'")
+
+			goto CONTINUE
+		end
+
+		local crc_local = util.CRC(file_contents)
+
+		if not crc_local then
+			print("[TFA Base] (CRC) Unable to calculate checksum for file '" .. file_name .. "'")
+		elseif crc_local ~= crc_stored then
+			print("[TFA Base] (CRC) Checksum diff for '" .. file_name .. "': expected " .. tostring(crc_stored) .. ", got " .. tostring(crc_local))
+		end
+
+		::CONTINUE::
+	end
+end
+
+hook.Add("InitPostEntity", "TFABase_CRCIntegrityCheck", check_and_compare_files)'''
+
+if __name__ == '__main__':
+	if os.path.exists(targetPath):
+		os.remove(targetPath)
+
+	hashes = {}
+
+	for root, dirs, files in os.walk("lua"):
+		for file in files:
+			if file.endswith("___basecrc.lua"):
+				continue
+
+			if file.endswith(".lua"):
+				fileName = os.path.join(root, file)
+				with open(fileName, "rb") as f:
+					hashes[fileName.replace("\\", "/")] = zlib.crc32(f.read())
+
+	hashesStr = ''
+	for filename in hashes:
+		hashesStr = hashesStr + '\t["' + filename + '"] = "' + str(hashes[filename]) + '",\n'
+
+	hashesFile = open(targetPath, 'w')
+	hashesFile.write(hashCheckCode.format(hashes=hashesStr))
+	hashesFile.close()