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Parse DNS servers from configuration

This commit is contained in:
Davide De Rosa 2019-01-05 22:26:20 +01:00
parent 13c41d80e7
commit c244b29a8f
2 changed files with 24 additions and 2 deletions
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14
TunnelKit/Sources/Core/ConfigurationParser.swift
View File

@ -91,6 +91,8 @@ public class ConfigurationParser {
static let blockEnd = NSRegularExpression("^<\\/[\\w\\-]+>")
static let dnsRegexp = NSRegularExpression("dhcp-option DNS6? [\\d\\.a-fA-F:]+")
// unsupported
// static let fragment = NSRegularExpression("^fragment +\\d+")
@ -143,6 +145,7 @@ public class ConfigurationParser {
var tlsStrategy: SessionProxy.TLSWrap.Strategy?
var tlsKeyLines: [Substring]?
var tlsWrap: SessionProxy.TLSWrap?
var dnsServers: [String]?
var currentBlockName: String?
var currentBlock: [String] = []
@ -316,6 +319,16 @@ public class ConfigurationParser {
}
renegotiateAfterSeconds = TimeInterval(arg)
}
Regex.dnsRegexp.enumerateArguments(in: line) {
isHandled = true
guard $0.count == 2 else {
return
}
if dnsServers == nil {
dnsServers = []
}
dnsServers?.append($0[1])
}
Regex.fragment.enumerateArguments(in: line) { (_) in
unsupportedError = ParsingError.unsupportedConfiguration(option: "fragment")
}
@ -388,6 +401,7 @@ public class ConfigurationParser {
sessionBuilder.clientKey = clientKey
sessionBuilder.keepAliveInterval = keepAliveSeconds
sessionBuilder.renegotiatesAfter = renegotiateAfterSeconds
sessionBuilder.dnsServers = dnsServers
return ParsingResult(
url: originalURL,

12
TunnelKitTests/ConfigurationParserTests.swift
View File

@ -27,6 +27,8 @@ import XCTest
import TunnelKit
class ConfigurationParserTests: XCTestCase {
let base: [String] = ["<ca>", "</ca>", "remote 1.2.3.4"]
override func setUp() {
super.setUp()
// Put setup code here. This method is called before the invocation of each test method in the class.
@ -55,8 +57,6 @@ class ConfigurationParserTests: XCTestCase {
}
func testCompression() throws {
let base: [String] = ["<ca>", "</ca>", "remote 1.2.3.4"]
XCTAssertNotNil(try ConfigurationParser.parsed(fromLines: base + ["comp-lzo"]).warning)
XCTAssertNoThrow(try ConfigurationParser.parsed(fromLines: base + ["comp-lzo no"]))
XCTAssertThrowsError(try ConfigurationParser.parsed(fromLines: base + ["comp-lzo yes"]))
@ -65,6 +65,14 @@ class ConfigurationParserTests: XCTestCase {
XCTAssertThrowsError(try ConfigurationParser.parsed(fromLines: base + ["compress lzo"]))
}
func testDHCPOption() throws {
let lines = base + ["dhcp-option DNS 8.8.8.8", "dhcp-option DNS6 ffff::1"]
XCTAssertNoThrow(try ConfigurationParser.parsed(fromLines: lines))
let parsed = try! ConfigurationParser.parsed(fromLines: lines)
XCTAssertEqual(parsed.configuration.dnsServers, ["8.8.8.8", "ffff::1"])
}
private func url(withName name: String) -> URL {
return Bundle(for: ConfigurationParserTests.self).url(forResource: name, withExtension: "ovpn")!
}