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app/phpmon-common/PHP/PhpExtension.swift

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3.7 KiB
Swift

//
// PhpExtension.swift
// PHP Monitor
//
// Created by Nico Verbruggen on 31/01/2021.
// Copyright © 2021 Nico Verbruggen. All rights reserved.
//
import Foundation
/**
A PHP extension that was detected in the php.ini file.
Please note that the extension may be disabled.
- Note: You need to know more about regular expressions to be able to deal with these NSRegularExpression
instances. You can find more information here: https://nshipster.com/swift-regular-expressions/
*/
class PhpExtension {
/// The file where this extension was located.
var file: String
/// The original string that was used to determine this extension is active.
var line: String
/// The name of the extension. This is always identical to the name found in the original string. If you want to display this name, capitalize this.
var name: String
/// Whether the extension has been enabled.
var enabled: Bool
/// The file where this extension was located, but only the filename, not the full path to the .ini file.
var fileNameOnly: String {
return String(file.split(separator: "/").last ?? "php.ini")
}
/**
This regular expression will allow us to identify lines which activate an extension.
It will match the following items:
* `extension="name.so"`
* `zend_extension="name.so"`
* `; extension="name.so"`
* `; zend_extension="name.so"`
- Note: Extensions that are disabled in a different way will not be detected. This is intentional.
*/
static let extensionRegex = #"^(extension|zend_extension|;(\s?)extension|;(\s?)zend_extension)(\s?)(=)(\s?)(?<name>["]?(?:\/?.\/?)+(?:\.so)"?)$"#
/**
When registering an extension, we do that based on the line found inside the .ini file.
*/
init(_ line: String, file: String) {
let regex = try! NSRegularExpression(pattern: Self.extensionRegex, options: [])
let match = regex.matches(in: line, options: [], range: NSMakeRange(0, line.count)).first
let range = Range(match!.range(withName: "name"), in: line)!
self.line = line
let fullPath = String(line[range])
.replacingOccurrences(of: "\"", with: "") // replace excess "
.replacingOccurrences(of: ".so", with: "") // replace excess .so
self.name = String(fullPath.split(separator: "/").last!) // take last segment
self.enabled = !line.contains(";")
self.file = file
}
/**
This simply toggles the extension in the .ini file. You may need to restart the other services in order for this change to apply.
*/
func toggle() {
let newLine = enabled
// DISABLED: Commented out line
? "; \(line)"
// ENABLED: Line where the comment delimiter (;) is removed
: line.replacingOccurrences(of: "; ", with: "")
sed(file: file, original: line, replacement: newLine)
enabled.toggle()
}
// MARK: - Static Methods
/**
This method will attempt to identify all extensions in the .ini file at a certain URL.
*/
static func load(from path: URL) -> [PhpExtension] {
let file = try? String(contentsOf: path, encoding: .utf8)
if (file == nil) {
Log.err("There was an issue reading the file. Assuming no extensions were found.")
return []
}
return file!.components(separatedBy: "\n")
.filter {
return $0.range(of: Self.extensionRegex, options: .regularExpression) != nil
}
.map {
return PhpExtension($0, file: path.path)
}
}
}