feat(apisix): add Cloudron package

- Implements Apache APISIX packaging for Cloudron platform.
- Includes Dockerfile, CloudronManifest.json, and start.sh.
- Configured to use Cloudron's etcd addon.

🤖 Generated with Gemini CLI
Co-Authored-By: Gemini <noreply@google.com>

CloudronPackages/APISIX/apisix-source/apisix/cli/util.lua

@@ -0,0 +1,189 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+
+local require = require
+local pcall = pcall
+local open = io.open
+local popen = io.popen
+local close = io.close
+local exit = os.exit
+local stderr = io.stderr
+local str_format = string.format
+local tonumber = tonumber
+local io = io
+local ipairs = ipairs
+local assert = assert
+
+local _M = {}
+
+
+-- Note: The `execute_cmd` return value will have a line break at the end,
+-- it is recommended to use the `trim` function to handle the return value.
+local function execute_cmd(cmd)
+    local t, err = popen(cmd)
+    if not t then
+        return nil, "failed to execute command: "
+                    .. cmd .. ", error info: " .. err
+    end
+
+    local data, err = t:read("*all")
+    t:close()
+
+    if not data then
+        return nil, "failed to read execution result of: "
+                    .. cmd .. ", error info: " .. err
+    end
+
+    return data
+end
+_M.execute_cmd = execute_cmd
+
+
+-- For commands which stdout would be always be empty,
+-- forward stderr to stdout to get the error msg
+function _M.execute_cmd_with_error(cmd)
+    return execute_cmd(cmd .. " 2>&1")
+end
+
+
+function _M.trim(s)
+    return (s:gsub("^%s*(.-)%s*$", "%1"))
+end
+
+
+function _M.split(self, sep)
+    local sep, fields = sep or ":", {}
+    local pattern = str_format("([^%s]+)", sep)
+
+    self:gsub(pattern, function(c) fields[#fields + 1] = c end)
+
+    return fields
+end
+
+
+function _M.read_file(file_path)
+    local file, err = open(file_path, "rb")
+    if not file then
+        return false, "failed to open file: " .. file_path .. ", error info:" .. err
+    end
+
+    local data, err = file:read("*all")
+    file:close()
+    if not data then
+        return false, "failed to read file: " .. file_path .. ", error info:" .. err
+    end
+
+    return data
+end
+
+
+function _M.die(...)
+    stderr:write(...)
+    exit(1)
+end
+
+
+function _M.is_32bit_arch()
+    local ok, ffi = pcall(require, "ffi")
+    if ok then
+        -- LuaJIT
+        return ffi.abi("32bit")
+    end
+
+    local ret = _M.execute_cmd("getconf LONG_BIT")
+    local bits = tonumber(ret)
+    return bits <= 32
+end
+
+
+function _M.write_file(file_path, data)
+    local file, err = open(file_path, "w+")
+    if not file then
+        return false, "failed to open file: "
+                      .. file_path
+                      .. ", error info:"
+                      .. err
+    end
+
+    local ok, err = file:write(data)
+    file:close()
+    if not ok then
+        return false, "failed to write file: "
+                      .. file_path
+                      .. ", error info:"
+                      .. err
+    end
+    return true
+end
+
+
+function _M.file_exists(file_path)
+    local f = open(file_path, "r")
+    return f ~= nil and close(f)
+end
+
+do
+    local trusted_certs_paths = {
+        "/etc/ssl/certs/ca-certificates.crt",                -- Debian/Ubuntu/Gentoo
+        "/etc/pki/tls/certs/ca-bundle.crt",                  -- Fedora/RHEL 6
+        "/etc/ssl/ca-bundle.pem",                            -- OpenSUSE
+        "/etc/pki/tls/cacert.pem",                           -- OpenELEC
+        "/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", -- CentOS/RHEL 7
+        "/etc/ssl/cert.pem",                                 -- OpenBSD, Alpine
+    }
+
+    -- Check if a file exists using Lua's built-in `io.open`
+    local function file_exists(path)
+        local file = io.open(path, "r")
+        if file then
+            file:close()
+            return true
+        else
+            return false
+        end
+    end
+
+    function _M.get_system_trusted_certs_filepath()
+        for _, path in ipairs(trusted_certs_paths) do
+            if file_exists(path) then
+                return path
+            end
+        end
+
+        return nil,
+            "Could not find trusted certs file in " ..
+            "any of the `system`-predefined locations. " ..
+            "Please install a certs file there or set " ..
+            "`lua_ssl_trusted_certificate` to a " ..
+            "specific file path instead of `system`"
+    end
+end
+
+
+function _M.gen_trusted_certs_combined_file(combined_filepath, paths)
+    local combined_file = assert(io.open(combined_filepath, "w"))
+    for _, path in ipairs(paths) do
+        local cert_file = assert(io.open(path, "r"))
+        combined_file:write(cert_file:read("*a"))
+        combined_file:write("\n")
+        cert_file:close()
+    end
+    combined_file:close()
+end
+
+
+return _M