mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-02-11 00:00:08 +08:00
668 lines
23 KiB
Plaintext
668 lines
23 KiB
Plaintext
//
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// OpenVPNAdapter.m
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// OpenVPN Adapter
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//
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// Created by Sergey Abramchuk on 11.02.17.
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//
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//
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#import <sys/socket.h>
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#import <sys/un.h>
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#import <sys/stat.h>
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#import <sys/ioctl.h>
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#import <arpa/inet.h>
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#import <NetworkExtension/NetworkExtension.h>
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#import "OpenVPNTunnelSettings.h"
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#import "OpenVPNClient.h"
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#import "OpenVPNError.h"
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#import "OpenVPNEvent.h"
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#import "OpenVPNConfiguration+Internal.h"
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#import "OpenVPNCredentials+Internal.h"
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#import "OpenVPNProperties+Internal.h"
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#import "OpenVPNConnectionInfo+Internal.h"
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#import "OpenVPNSessionToken+Internal.h"
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#import "OpenVPNTransportStats+Internal.h"
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#import "OpenVPNInterfaceStats+Internal.h"
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#import "OpenVPNAdapter.h"
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#import "OpenVPNAdapter+Internal.h"
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#import "OpenVPNAdapter+Public.h"
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@interface OpenVPNAdapter () {
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__weak id<OpenVPNAdapterDelegate> _delegate;
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}
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@property OpenVPNClient *vpnClient;
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@property CFSocketRef vpnSocket;
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@property CFSocketRef tunSocket;
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@property (strong, nonatomic) NSString *remoteAddress;
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@property (strong, nonatomic) NSString *defaultGatewayIPv6;
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@property (strong, nonatomic) NSString *defaultGatewayIPv4;
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@property (strong, nonatomic) OpenVPNTunnelSettings *tunnelSettingsIPv6;
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@property (strong, nonatomic) OpenVPNTunnelSettings *tunnelSettingsIPv4;
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@property (strong, nonatomic) NSMutableArray *searchDomains;
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@property (strong, nonatomic) NSNumber *mtu;
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@property (weak, nonatomic) id<OpenVPNAdapterPacketFlow> packetFlow;
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- (void)readTUNPackets;
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- (void)readVPNData:(NSData *)data;
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- (OpenVPNEvent)getEventIdentifierByName:(NSString *)eventName;
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- (NSString *)getDescriptionForErrorEvent:(OpenVPNEvent)event;
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- (NSString *)getSubnetFromPrefixLength:(NSNumber *)prefixLength;
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@end
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@implementation OpenVPNAdapter (Internal)
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#pragma mark Sockets Configuration
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static void socketCallback(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *data, void *info) {
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OpenVPNAdapter *adapter = (__bridge OpenVPNAdapter *)info;
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switch (type) {
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case kCFSocketDataCallBack:
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[adapter readVPNData:(__bridge NSData *)data];
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break;
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default:
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break;
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}
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}
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- (BOOL)configureSockets {
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int sockets[2];
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if (socketpair(PF_LOCAL, SOCK_DGRAM, IPPROTO_IP, sockets) == -1) {
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NSLog(@"Failed to create a pair of connected sockets: %@", [NSString stringWithUTF8String:strerror(errno)]);
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return NO;
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}
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if (![self configureBufferSizeForSocket: sockets[0]] || ![self configureBufferSizeForSocket: sockets[1]]) {
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NSLog(@"Failed to configure buffer size of the sockets");
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return NO;
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}
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CFSocketContext socketCtxt = {0, (__bridge void *)self, NULL, NULL, NULL};
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self.vpnSocket = CFSocketCreateWithNative(kCFAllocatorDefault, sockets[0], kCFSocketDataCallBack, &socketCallback, &socketCtxt);
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self.tunSocket = CFSocketCreateWithNative(kCFAllocatorDefault, sockets[1], kCFSocketNoCallBack, NULL, NULL);
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if (!self.vpnSocket || !self.tunSocket) {
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NSLog(@"Failed to create core foundation sockets from native sockets");
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return NO;
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}
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CFRunLoopSourceRef tunSocketSource = CFSocketCreateRunLoopSource(kCFAllocatorDefault, self.vpnSocket, 0);
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CFRunLoopAddSource(CFRunLoopGetMain(), tunSocketSource, kCFRunLoopDefaultMode);
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CFRelease(tunSocketSource);
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return YES;
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}
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- (BOOL)configureBufferSizeForSocket:(int)socket {
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int buf_value = 65536;
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socklen_t buf_len = sizeof(buf_value);
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if (setsockopt(socket, SOL_SOCKET, SO_RCVBUF, &buf_value, buf_len) == -1) {
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NSLog(@"Failed to setup buffer size for input: %@", [NSString stringWithUTF8String:strerror(errno)]);
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return NO;
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}
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if (setsockopt(socket, SOL_SOCKET, SO_SNDBUF, &buf_value, buf_len) == -1) {
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NSLog(@"Failed to setup buffer size for output: %@", [NSString stringWithUTF8String:strerror(errno)]);
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return NO;
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}
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return YES;
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}
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#pragma mark TUN Configuration
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- (BOOL)setRemoteAddress:(NSString *)address isIPv6:(BOOL)isIPv6 {
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if (address == nil) {
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return NO;
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}
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self.remoteAddress = address;
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return YES;
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}
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- (BOOL)addLocalAddress:(NSString *)address prefixLength:(NSNumber *)prefixLength gateway:(NSString *)gateway isIPv6:(BOOL)isIPv6 {
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if (address == nil || prefixLength == nil) {
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return NO;
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}
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NSString *defaultGateway = [gateway length] == 0 || [gateway isEqualToString:@"UNSPEC"] ? nil : gateway;
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if (isIPv6) {
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if (!self.tunnelSettingsIPv6.initialized) {
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self.tunnelSettingsIPv6.initialized = YES;
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}
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self.defaultGatewayIPv6 = defaultGateway;
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[self.tunnelSettingsIPv6.localAddresses addObject:address];
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[self.tunnelSettingsIPv6.prefixLengths addObject:prefixLength];
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} else {
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if (!self.tunnelSettingsIPv4.initialized) {
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self.tunnelSettingsIPv4.initialized = YES;
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}
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self.defaultGatewayIPv4 = defaultGateway;
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[self.tunnelSettingsIPv4.localAddresses addObject:address];
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[self.tunnelSettingsIPv4.prefixLengths addObject:prefixLength];
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}
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return YES;
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}
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- (BOOL)defaultGatewayRerouteIPv4:(BOOL)rerouteIPv4 rerouteIPv6:(BOOL)rerouteIPv6 {
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if (rerouteIPv6) {
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NEIPv6Route *includedRoute = [NEIPv6Route defaultRoute];
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includedRoute.gatewayAddress = self.defaultGatewayIPv6;
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[self.tunnelSettingsIPv6.includedRoutes addObject:includedRoute];
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}
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if (rerouteIPv4) {
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NEIPv4Route *includedRoute = [NEIPv4Route defaultRoute];
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includedRoute.gatewayAddress = self.defaultGatewayIPv4;
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[self.tunnelSettingsIPv4.includedRoutes addObject:includedRoute];
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}
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return YES;
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}
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- (BOOL)addRoute:(NSString *)route prefixLength:(NSNumber *)prefixLength isIPv6:(BOOL)isIPv6 {
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if (route == nil || prefixLength == nil) {
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return NO;
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}
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if (isIPv6) {
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NEIPv6Route *includedRoute = [[NEIPv6Route alloc] initWithDestinationAddress:route networkPrefixLength:prefixLength];
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includedRoute.gatewayAddress = self.defaultGatewayIPv6;
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[self.tunnelSettingsIPv6.includedRoutes addObject:includedRoute];
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} else {
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NSString *subnet = [self getSubnetFromPrefixLength:prefixLength];
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NEIPv4Route *includedRoute = [[NEIPv4Route alloc] initWithDestinationAddress:route subnetMask:subnet];
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includedRoute.gatewayAddress = self.defaultGatewayIPv4;
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[self.tunnelSettingsIPv4.includedRoutes addObject:includedRoute];
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}
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return YES;
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}
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- (BOOL)excludeRoute:(NSString *)route prefixLength:(NSNumber *)prefixLength isIPv6:(BOOL)isIPv6 {
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if (route == nil || prefixLength == nil) {
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return NO;
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}
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if (isIPv6) {
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NEIPv6Route *excludedRoute = [[NEIPv6Route alloc] initWithDestinationAddress:route networkPrefixLength:prefixLength];
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[self.tunnelSettingsIPv6.excludedRoutes addObject:excludedRoute];
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} else {
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NSString *subnet = [self getSubnetFromPrefixLength:prefixLength];
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NEIPv4Route *excludedRoute = [[NEIPv4Route alloc] initWithDestinationAddress:route subnetMask:subnet];
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[self.tunnelSettingsIPv4.excludedRoutes addObject:excludedRoute];
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}
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return YES;
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}
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- (BOOL)addDNSAddress:(NSString *)address isIPv6:(BOOL)isIPv6 {
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if (address == nil) {
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return NO;
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}
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if (isIPv6) {
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[self.tunnelSettingsIPv6.dnsAddresses addObject:address];
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} else {
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[self.tunnelSettingsIPv4.dnsAddresses addObject:address];
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}
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return YES;
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}
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- (BOOL)addSearchDomain:(NSString *)domain {
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if (domain == nil) {
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return NO;
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}
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[self.searchDomains addObject:domain];
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return YES;
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}
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- (BOOL)setMTU:(NSNumber *)mtu {
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self.mtu = mtu;
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return YES;
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}
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- (NSInteger)establishTunnel {
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NSAssert(self.delegate != nil, @"delegate property should not be nil");
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NEPacketTunnelNetworkSettings *networkSettings = [[NEPacketTunnelNetworkSettings alloc] initWithTunnelRemoteAddress:self.remoteAddress];
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// Configure IPv6 addresses and routes
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if (self.tunnelSettingsIPv6.initialized) {
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NEIPv6Settings *settingsIPv6 = [[NEIPv6Settings alloc] initWithAddresses:self.tunnelSettingsIPv6.localAddresses networkPrefixLengths:self.tunnelSettingsIPv6.prefixLengths];
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settingsIPv6.includedRoutes = self.tunnelSettingsIPv6.includedRoutes;
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settingsIPv6.excludedRoutes = self.tunnelSettingsIPv6.excludedRoutes;
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networkSettings.IPv6Settings = settingsIPv6;
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}
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// Configure IPv4 addresses and routes
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if (self.tunnelSettingsIPv4.initialized) {
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NSMutableArray *subnets = [NSMutableArray new];
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[self.tunnelSettingsIPv4.prefixLengths enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
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NSString *subnet = [self getSubnetFromPrefixLength:obj];
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[subnets addObject:subnet];
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}];
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NEIPv4Settings *ipSettings = [[NEIPv4Settings alloc] initWithAddresses:self.tunnelSettingsIPv4.localAddresses subnetMasks:subnets];
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ipSettings.includedRoutes = self.tunnelSettingsIPv4.includedRoutes;
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ipSettings.excludedRoutes = self.tunnelSettingsIPv4.excludedRoutes;
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networkSettings.IPv4Settings = ipSettings;
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}
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// Configure DNS addresses and search domains
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NSMutableArray *dnsAddresses = [NSMutableArray new];
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if (self.tunnelSettingsIPv6.dnsAddresses.count > 0) {
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[dnsAddresses addObjectsFromArray:self.tunnelSettingsIPv6.dnsAddresses];
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}
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if (self.tunnelSettingsIPv4.dnsAddresses.count > 0) {
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[dnsAddresses addObjectsFromArray:self.tunnelSettingsIPv4.dnsAddresses];
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}
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if (dnsAddresses.count > 0) {
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networkSettings.DNSSettings = [[NEDNSSettings alloc] initWithServers:dnsAddresses];
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}
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if (networkSettings.DNSSettings && self.searchDomains.count > 0) {
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networkSettings.DNSSettings.searchDomains = self.searchDomains;
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}
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// Set MTU
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networkSettings.MTU = self.mtu;
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// Establish TUN interface
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dispatch_semaphore_t sema = dispatch_semaphore_create(0);
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[self.delegate configureTunnelWithSettings:networkSettings callback:^(id<OpenVPNAdapterPacketFlow> _Nullable flow) {
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self.packetFlow = flow;
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dispatch_semaphore_signal(sema);
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}];
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// Wait 10 seconds
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dispatch_time_t timeout = dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC);
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if (dispatch_semaphore_wait(sema, timeout) != 0) {
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NSLog(@"Failed to establish tunnel in a reasonable time");
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return -1;
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}
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if (self.packetFlow) {
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[self readTUNPackets];
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return CFSocketGetNative(self.tunSocket);
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} else {
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return -1;
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}
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}
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#pragma mark Event and Log Handlers
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- (void)handleEvent:(const ClientAPI::Event *)event {
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NSAssert(self.delegate != nil, @"delegate property should not be nil");
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NSString *eventName = [NSString stringWithUTF8String:event->name.c_str()];
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OpenVPNEvent eventIdentifier = [self getEventIdentifierByName:eventName];
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NSString *eventMessage = [NSString stringWithUTF8String:event->info.c_str()];
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if (event->error) {
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NSMutableDictionary *userInfo = [NSMutableDictionary new];
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[userInfo setObject:@(event->fatal) forKey:OpenVPNAdapterErrorFatalKey];
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[userInfo setObject:@(eventIdentifier) forKey:OpenVPNAdapterErrorEventIdentifierKey];
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NSString *eventDescription = [self getDescriptionForErrorEvent:eventIdentifier];
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if (eventDescription) {
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[userInfo setObject:eventDescription forKey:NSLocalizedFailureReasonErrorKey];
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}
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if (eventMessage != nil && ![eventMessage isEqualToString:@""]) {
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[userInfo setObject:eventMessage forKey:NSLocalizedDescriptionKey];
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}
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NSError *error = [NSError errorWithDomain:OpenVPNAdapterErrorDomain
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code:OpenVPNErrorClientFailure
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userInfo:[userInfo copy]];
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[self.delegate handleError:error];
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} else {
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[self.delegate handleEvent:eventIdentifier message:eventMessage == nil || [eventMessage isEqualToString:@""] ? nil : eventMessage];
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}
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}
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- (void)handleLog:(const ClientAPI::LogInfo *)log {
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NSAssert(self.delegate != nil, @"delegate property should not be nil");
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if ([self.delegate respondsToSelector:@selector(handleLog:)]) {
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NSString *message = [NSString stringWithCString:log->text.c_str() encoding:NSUTF8StringEncoding];
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[self.delegate handleLog:message];
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}
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}
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#pragma mark Clock Tick
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- (void)tick {
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NSAssert(self.delegate != nil, @"delegate property should not be nil");
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if ([self.delegate respondsToSelector:@selector(tick)]) {
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[self.delegate tick];
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}
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}
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@end
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@implementation OpenVPNAdapter (Public)
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#pragma mark Properties
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+ (NSString *)copyright {
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std::string copyright = OpenVPNClient::copyright();
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return [NSString stringWithUTF8String:copyright.c_str()];
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}
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+ (NSString *)platform {
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std::string platform = OpenVPNClient::platform();
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return [NSString stringWithUTF8String:platform.c_str()];
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}
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- (void)setDelegate:(id<OpenVPNAdapterDelegate>)delegate {
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_delegate = delegate;
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}
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- (id<OpenVPNAdapterDelegate>)delegate {
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return _delegate;
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}
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- (OpenVPNConnectionInfo *)connectionInfo {
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ClientAPI::ConnectionInfo info = self.vpnClient->connection_info();
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return info.defined ? [[OpenVPNConnectionInfo alloc] initWithConnectionInfo:info] : nil;
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}
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- (OpenVPNSessionToken *)sessionToken {
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ClientAPI::SessionToken token;
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bool gotToken = self.vpnClient->session_token(token);
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return gotToken ? [[OpenVPNSessionToken alloc] initWithSessionToken:token] : nil;
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}
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- (OpenVPNTransportStats *)transportStats {
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ClientAPI::TransportStats stats = self.vpnClient->transport_stats();
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return [[OpenVPNTransportStats alloc] initWithTransportStats:stats];
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}
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- (OpenVPNInterfaceStats *)interfaceStats {
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ClientAPI::InterfaceStats stats = self.vpnClient->tun_stats();
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return [[OpenVPNInterfaceStats alloc] initWithInterfaceStats:stats];
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}
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#pragma mark Client Configuration
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- (OpenVPNProperties *)applyConfiguration:(nonnull OpenVPNConfiguration *)configuration error:(out NSError * __nullable * __nullable)error {
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ClientAPI::EvalConfig eval = self.vpnClient->eval_config(configuration.config);
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if (eval.error) {
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if (error) *error = [NSError errorWithDomain:OpenVPNAdapterErrorDomain code:OpenVPNErrorConfigurationFailure userInfo:@{
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NSLocalizedDescriptionKey: [NSString stringWithUTF8String:eval.message.c_str()]
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}];
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return nil;
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}
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return [[OpenVPNProperties alloc] initWithEvalConfig:eval];
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}
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- (BOOL)provideCredentials:(nonnull OpenVPNCredentials *)credentials error:(out NSError * __nullable * __nullable)error {
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ClientAPI::Status creds_status = self.vpnClient->provide_creds(credentials.credentials);
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if (creds_status.error) {
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if (error) *error = [NSError errorWithDomain:OpenVPNAdapterErrorDomain code:OpenVPNErrorConfigurationFailure userInfo:@{
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NSLocalizedDescriptionKey: [NSString stringWithUTF8String:creds_status.message.c_str()]
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}];
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return NO;
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}
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return YES;
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}
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#pragma mark Connection Control
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- (void)connect {
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dispatch_queue_t connectQueue = dispatch_queue_create("me.ss-abramchuk.openvpn-adapter.connection", NULL);
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dispatch_async(connectQueue, ^{
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OpenVPNClient::init_process();
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self.tunnelSettingsIPv6 = [OpenVPNTunnelSettings new];
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self.tunnelSettingsIPv4 = [OpenVPNTunnelSettings new];
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self.searchDomains = [NSMutableArray new];
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try {
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ClientAPI::Status status = self.vpnClient->connect();
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if (status.error) {
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NSError *error = [NSError errorWithDomain:OpenVPNAdapterErrorDomain
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code:OpenVPNErrorClientFailure
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userInfo:@{ NSLocalizedDescriptionKey: [NSString stringWithUTF8String:status.message.c_str()],
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OpenVPNAdapterErrorFatalKey: @(YES),
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OpenVPNAdapterErrorEventIdentifierKey: @(OpenVPNEventConnectionFailed) }];
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[self.delegate handleError:error];
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}
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} catch(const std::exception& e) {
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NSError *error = [NSError errorWithDomain:OpenVPNAdapterErrorDomain
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code:OpenVPNErrorClientFailure
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userInfo:@{ NSLocalizedDescriptionKey: [NSString stringWithUTF8String:e.what()],
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OpenVPNAdapterErrorFatalKey: @(YES),
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OpenVPNAdapterErrorEventIdentifierKey: @(OpenVPNEventConnectionFailed) }];
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[self.delegate handleError:error];
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}
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self.remoteAddress = nil;
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self.tunnelSettingsIPv6 = nil;
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self.tunnelSettingsIPv4 = nil;
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self.searchDomains = nil;
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self.mtu = nil;
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if (self.vpnSocket) {
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CFSocketInvalidate(self.vpnSocket);
|
|
CFRelease(self.vpnSocket);
|
|
}
|
|
|
|
if (self.tunSocket) {
|
|
CFSocketInvalidate(self.tunSocket);
|
|
CFRelease(self.tunSocket);
|
|
}
|
|
|
|
OpenVPNClient::uninit_process();
|
|
});
|
|
}
|
|
|
|
- (void)pauseWithReason:(NSString *)pauseReason {
|
|
std::string reason = pauseReason ? std::string([pauseReason UTF8String]) : "";
|
|
self.vpnClient->pause(reason);
|
|
}
|
|
|
|
- (void)resume {
|
|
self.vpnClient->resume();
|
|
}
|
|
|
|
- (void)reconnectAfterTimeInterval:(NSInteger)interval {
|
|
self.vpnClient->reconnect(interval);
|
|
}
|
|
|
|
- (void)disconnect {
|
|
self.vpnClient->stop();
|
|
}
|
|
|
|
@end
|
|
|
|
@implementation OpenVPNAdapter
|
|
|
|
#pragma mark Initialization
|
|
|
|
- (instancetype)init
|
|
{
|
|
self = [super init];
|
|
if (self) {
|
|
_delegate = nil;
|
|
self.vpnClient = new OpenVPNClient((__bridge void *)self);
|
|
}
|
|
return self;
|
|
}
|
|
|
|
#pragma mark TUN -> OpenVPN
|
|
|
|
- (void)readTUNPackets {
|
|
[self.packetFlow readPacketsWithCompletionHandler:^(NSArray<NSData *> * _Nonnull packets, NSArray<NSNumber *> * _Nonnull protocols) {
|
|
[packets enumerateObjectsUsingBlock:^(NSData * data, NSUInteger idx, BOOL * stop) {
|
|
// Prepend data with network protocol. It should be done because OpenVPN uses uint32_t prefixes containing network protocol.
|
|
NSNumber *protocol = protocols[idx];
|
|
uint32_t prefix = CFSwapInt32HostToBig((uint32_t)[protocol unsignedIntegerValue]);
|
|
|
|
NSMutableData *packet = [NSMutableData new];
|
|
[packet appendBytes:&prefix length:sizeof(prefix)];
|
|
[packet appendData:data];
|
|
|
|
// Send data to the VPN server
|
|
CFSocketSendData(self.vpnSocket, NULL, (CFDataRef)packet, 0.05);
|
|
}];
|
|
|
|
[self readTUNPackets];
|
|
}];
|
|
}
|
|
|
|
#pragma mark OpenVPN -> TUN
|
|
|
|
- (void)readVPNData:(NSData *)data {
|
|
// Get network protocol from data
|
|
NSUInteger prefixSize = sizeof(uint32_t);
|
|
|
|
if (data.length < prefixSize) {
|
|
NSLog(@"Incorrect OpenVPN packet size");
|
|
return;
|
|
}
|
|
|
|
uint32_t protocol = UINT32_MAX;
|
|
[data getBytes:&protocol length:prefixSize];
|
|
|
|
protocol = CFSwapInt32BigToHost(protocol);
|
|
|
|
// Send the packet to the TUN interface
|
|
NSData *packet = [data subdataWithRange:NSMakeRange(prefixSize, data.length - prefixSize)];
|
|
if (![self.packetFlow writePackets:@[packet] withProtocols:@[@(protocol)]]) {
|
|
NSLog(@"Failed to send OpenVPN packet to the TUN interface");
|
|
}
|
|
}
|
|
|
|
#pragma mark Utils
|
|
|
|
- (OpenVPNEvent)getEventIdentifierByName:(NSString *)eventName {
|
|
NSDictionary *events = @{
|
|
@"DISCONNECTED": @(OpenVPNEventDisconnected),
|
|
@"CONNECTED": @(OpenVPNEventConnected),
|
|
@"RECONNECTING": @(OpenVPNEventReconnecting),
|
|
@"RESOLVE": @(OpenVPNEventResolve),
|
|
@"WAIT": @(OpenVPNEventWait),
|
|
@"WAIT_PROXY": @(OpenVPNEventWaitProxy),
|
|
@"CONNECTING": @(OpenVPNEventConnecting),
|
|
@"GET_CONFIG": @(OpenVPNEventGetConfig),
|
|
@"ASSIGN_IP": @(OpenVPNEventAssignIP),
|
|
@"ADD_ROUTES": @(OpenVPNEventAddRoutes),
|
|
@"ECHO": @(OpenVPNEventEcho),
|
|
@"INFO": @(OpenVPNEventInfo),
|
|
@"PAUSE": @(OpenVPNEventPause),
|
|
@"RESUME": @(OpenVPNEventResume),
|
|
@"RELAY": @(OpenVPNEventRelay),
|
|
@"TRANSPORT_ERROR": @(OpenVPNEventTransportError),
|
|
@"TUN_ERROR": @(OpenVPNEventTunError),
|
|
@"CLIENT_RESTART": @(OpenVPNEventClientRestart),
|
|
@"AUTH_FAILED": @(OpenVPNEventAuthFailed),
|
|
@"CERT_VERIFY_FAIL": @(OpenVPNEventCertVerifyFail),
|
|
@"TLS_VERSION_MIN": @(OpenVPNEventTLSVersionMin),
|
|
@"CLIENT_HALT": @(OpenVPNEventClientHalt),
|
|
@"CONNECTION_TIMEOUT": @(OpenVPNEventConnectionTimeout),
|
|
@"INACTIVE_TIMEOUT": @(OpenVPNEventInactiveTimeout),
|
|
@"DYNAMIC_CHALLENGE": @(OpenVPNEventDynamicChallenge),
|
|
@"PROXY_NEED_CREDS": @(OpenVPNEventProxyNeedCreds),
|
|
@"PROXY_ERROR": @(OpenVPNEventProxyError),
|
|
@"TUN_SETUP_FAILED": @(OpenVPNEventTunSetupFailed),
|
|
@"TUN_IFACE_CREATE": @(OpenVPNEventTunIfaceCreate),
|
|
@"TUN_IFACE_DISABLED": @(OpenVPNEventTunIfaceDisabled),
|
|
@"EPKI_ERROR": @(OpenVPNEventEPKIError),
|
|
@"EPKI_INVALID_ALIAS": @(OpenVPNEventEPKIInvalidAlias),
|
|
@"RELAY_ERROR": @(OpenVPNEventRelayError)
|
|
};
|
|
|
|
OpenVPNEvent event = events[eventName] != nil ? (OpenVPNEvent)[(NSNumber *)events[eventName] unsignedIntegerValue] : OpenVPNEventUnknown;
|
|
return event;
|
|
}
|
|
|
|
- (NSString *)getDescriptionForErrorEvent:(OpenVPNEvent)event {
|
|
switch (event) {
|
|
case OpenVPNEventTransportError: return @"General transport error.";
|
|
case OpenVPNEventTunError: return @"General tun error.";
|
|
case OpenVPNEventClientRestart: return @"RESTART message from server received.";
|
|
case OpenVPNEventAuthFailed: return @"General authentication failure.";
|
|
case OpenVPNEventCertVerifyFail: return @"Peer certificate verification failure.";
|
|
case OpenVPNEventTLSVersionMin: return @"Peer cannot handshake at our minimum required TLS version.";
|
|
case OpenVPNEventClientHalt: return @"HALT message from server received.";
|
|
case OpenVPNEventConnectionTimeout: return @"Connection failed to establish within given time.";
|
|
case OpenVPNEventInactiveTimeout: return @"Disconnected due to inactive timer.";
|
|
case OpenVPNEventProxyNeedCreds: return @"HTTP proxy needs credentials.";
|
|
case OpenVPNEventProxyError: return @"HTTP proxy error.";
|
|
case OpenVPNEventTunSetupFailed: return @"Error setting up TUN interface.";
|
|
case OpenVPNEventTunIfaceCreate: return @"Error creating TUN interface.";
|
|
case OpenVPNEventTunIfaceDisabled: return @"TUN interface is disabled.";
|
|
case OpenVPNEventRelayError: return @"RELAY error.";
|
|
|
|
default: return nil;
|
|
}
|
|
}
|
|
|
|
- (NSString *)getSubnetFromPrefixLength:(NSNumber *)prefixLength {
|
|
uint32_t bitmask = UINT_MAX << (sizeof(uint32_t) * 8 - prefixLength.integerValue);
|
|
|
|
uint8_t first = (bitmask >> 24) & 0xFF;
|
|
uint8_t second = (bitmask >> 16) & 0xFF;
|
|
uint8_t third = (bitmask >> 8) & 0xFF;
|
|
uint8_t fourth = bitmask & 0xFF;
|
|
|
|
return [NSString stringWithFormat:@"%hhu.%hhu.%hhu.%hhu", first, second, third, fourth];
|
|
}
|
|
|
|
#pragma mark Deallocation
|
|
|
|
- (void)dealloc {
|
|
delete self.vpnClient;
|
|
}
|
|
|
|
@end
|