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Merge pull request #606 from Chilledheart/ios_add_packet_tunnel_glue_…
…code Ios add packet tunnel glue code
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,13 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>NSExtension</key> | ||
| <dict> | ||
| <key>NSExtensionPointIdentifier</key> | ||
| <string>com.apple.networkextension.packet-tunnel</string> | ||
| <key>NSExtensionPrincipalClass</key> | ||
| <string>PacketTunnelProvider</string> | ||
| </dict> | ||
| </dict> | ||
| </plist> |
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| @@ -0,0 +1,10 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>com.apple.security.application-groups</key> | ||
| <array> | ||
| <string>group.it.gui.ios.yass</string> | ||
| </array> | ||
| </dict> | ||
| </plist> |
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| // SPDX-License-Identifier: GPL-2.0 | ||
| /* Copyright (c) 2023 Chilledheart */ | ||
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| #import <NetworkExtension/NetworkExtension.h> | ||
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| @interface PacketTunnelProvider : NEPacketTunnelProvider | ||
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| @end |
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| // SPDX-License-Identifier: GPL-2.0 | ||
| /* Copyright (c) 2023 Chilledheart */ | ||
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| #import "PacketTunnelProvider.h" | ||
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| @implementation PacketTunnelProvider | ||
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| - (void)startTunnelWithOptions:(NSDictionary *)options completionHandler:(void (^)(NSError *))completionHandler { | ||
| // Add code here to start the process of connecting the tunnel. | ||
| } | ||
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| - (void)stopTunnelWithReason:(NEProviderStopReason)reason completionHandler:(void (^)(void))completionHandler { | ||
| // Add code here to start the process of stopping the tunnel. | ||
| completionHandler(); | ||
| } | ||
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| - (void)handleAppMessage:(NSData *)messageData completionHandler:(void (^)(NSData *))completionHandler { | ||
| // Add code here to handle the message. | ||
| } | ||
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| - (void)sleepWithCompletionHandler:(void (^)(void))completionHandler { | ||
| // Add code here to get ready to sleep. | ||
| completionHandler(); | ||
| } | ||
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| - (void)wake { | ||
| // Add code here to wake up. | ||
| } | ||
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| @end |
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| // SPDX-License-Identifier: GPL-2.0 | ||
| /* Copyright (c) 2023 Chilledheart */ | ||
| #ifndef YASS_IOS_TUN2PROXY | ||
| #define YASS_IOS_TUN2PROXY | ||
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| #import <Foundation/Foundation.h> | ||
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| @class NEPacketTunnelFlow; | ||
| @class NEPacket; | ||
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| void Tun2Proxy_Init(NEPacketTunnelFlow *flow); | ||
| void Tun2Proxy_ForwardReadPackets(NSArray<NEPacket *> *packets); | ||
| void Tun2Proxy_Destroy(); | ||
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| #endif // YASS_IOS_TUN2PROXY |
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| // SPDX-License-Identifier: GPL-2.0 | ||
| /* Copyright (c) 2023 Chilledheart */ | ||
| #include "ios/tun2proxy.h" | ||
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| #import <NetworkExtension/NetworkExtension.h> | ||
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| struct InitContent { | ||
| __weak NEPacketTunnelFlow *packetFlow; | ||
| }; | ||
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| struct ReadPacketContent { | ||
| NSArray<NEPacket *> *packets; | ||
| }; | ||
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| static size_t GetPacketCount(void *content, void* packets) { | ||
| NSArray<NEPacket *> *array = reinterpret_cast<ReadPacketContent*>(packets)->packets; | ||
| return [array count]; | ||
| } | ||
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| static const void* GetPacketDataAtIndex(void *content, void* packets, int index) { | ||
| NSArray<NEPacket *> *array = reinterpret_cast<ReadPacketContent*>(packets)->packets; | ||
| NEPacket *packet = array[index]; | ||
| uint32_t prefix = CFSwapInt32HostToBig((uint32_t)packet.protocolFamily); | ||
| // Prepend data with network protocol. It should be done because on tun2proxy | ||
| // uses uint32_t prefixes containing network protocol. | ||
| NSMutableData *data = [[NSMutableData alloc] initWithCapacity:sizeof(prefix) + packet.data.length]; | ||
| [data appendBytes:&prefix length:sizeof(prefix)]; | ||
| [data appendData:packet.data]; | ||
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| return data.bytes; | ||
| } | ||
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| static size_t GetPacketSizeAtIndex(void *content, void* packets, int index) { | ||
| NSArray<NEPacket *> *array = reinterpret_cast<ReadPacketContent*>(packets)->packets; | ||
| return sizeof(uint32_t) + [[array[index] data] length]; | ||
| } | ||
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| static NEPacket *packetFromData(NSData *data) { | ||
| // Get network protocol from prefix | ||
| NSUInteger prefixSize = sizeof(uint32_t); | ||
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| if (data.length < prefixSize) { | ||
| return nil; | ||
| } | ||
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| uint32_t protocol = PF_UNSPEC; | ||
| [data getBytes:&protocol length:prefixSize]; | ||
| protocol = CFSwapInt32BigToHost(protocol); | ||
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| NSRange range = NSMakeRange(prefixSize, data.length - prefixSize); | ||
| NSData *packetData = [data subdataWithRange:range]; | ||
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| return [[NEPacket alloc] initWithData:packetData protocolFamily:protocol]; | ||
| } | ||
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| static void WritePackets(void* content, void** packets, size_t* packetLengths, | ||
| int packetsCount) { | ||
| InitContent *c = reinterpret_cast<InitContent*>(content); | ||
| NEPacketTunnelFlow* packetFlow = c->packetFlow;; | ||
| NSMutableArray *packetsArray = [NSMutableArray array]; | ||
| for (int i = 0; i < packetsCount; ++i) { | ||
| NSData *data = [NSData dataWithBytes:packets[i] length:packetLengths[i]]; | ||
| NEPacket *packet = packetFromData(data); | ||
| [packetsArray addObject:packet]; | ||
| } | ||
| [packetFlow writePacketObjects:packetsArray]; | ||
| } | ||
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| extern "C" | ||
| void tun2proxy_init(void* content, decltype(WritePackets)); | ||
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| extern "C" | ||
| void tun2proxy_read_packets(void* packets, decltype(GetPacketCount), | ||
| decltype(GetPacketDataAtIndex), | ||
| decltype(GetPacketSizeAtIndex)); | ||
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| extern "C" | ||
| void* tun2proxy_destroy(); | ||
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| void Tun2Proxy_Init(NEPacketTunnelFlow *packetFlow) { | ||
| InitContent *c = new InitContent; | ||
| c->packetFlow = packetFlow; | ||
| tun2proxy_init(c, WritePackets); | ||
| } | ||
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| void Tun2Proxy_ForwardReadPackets(NSArray<NEPacket *> *packets) { | ||
| ReadPacketContent p; | ||
| p.packets = packets; | ||
| tun2proxy_read_packets(&p, GetPacketCount, GetPacketDataAtIndex, | ||
| GetPacketSizeAtIndex); | ||
| } | ||
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| void Tun2Proxy_Destroy() { | ||
| InitContent *c = reinterpret_cast<InitContent*>(tun2proxy_destroy()); | ||
| delete c; | ||
| } |