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Read data from OpenVPN and pass it to the TUN interface

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This commit is contained in:
Sergey Abramchuk
2017-03-06 20:12:51 +03:00
parent db6ba2ea8f
commit 7b5f0cd714
1 changed files with 18 additions and 1 deletions
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19
OpenVPN Tunnel Provider/OpenVPNAdapter.mm
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@@ -397,7 +397,24 @@ static void socketCallback(CFSocketRef socket, CFSocketCallBackType type, CFData
#pragma mark OpenVPN -> TUN
- (void)readVPNData:(NSData *)data {
// TODO: Read data from the VPN and send it to the TUN interface
// 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 Deallocation