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304 Commits

Author SHA1 Message Date
Davide De Rosa 668474d75c Indent negotiated parameters in log 2018-09-21 19:53:38 +02:00
Davide De Rosa 44fc38e8ef Rename encryption headers for consistency 
The shared prefix makes it easier to associate them with
implementation files.
 2018-09-20 09:03:33 +02:00
Davide De Rosa 600c93be55 Drop overheadLength, only used in one place 2018-09-20 09:03:33 +02:00
Davide De Rosa dd02c92aa5 Expose methods for capacity prediction 
Encapsulate encrypt/decrypt buffer capacity calculation.
 2018-09-20 09:03:33 +02:00
Davide De Rosa f6ee187db7 Use symbolic data header length 2018-09-20 09:03:33 +02:00
Davide De Rosa aa39414a77 Rename packet header to opcode (first byte) 2018-09-20 09:03:31 +02:00
Davide De Rosa fe92fcd91c Remove NSData versions from Encrypter/Decrypter 
Move to test target. Conversely, bring ZeroingData.data extension
into main targets.
 2018-09-20 09:01:44 +02:00
Davide De Rosa 1099d9adbf Improve control channel log readability 
- Use consistent convention in id logging.
- Describe packet codes.
- Encapsulate packet logging.
 2018-09-20 09:00:11 +02:00
Davide De Rosa ce94a594f9 Bring code/key deserialization into serializer 
Duplicates first byte parsing but makes testing more meaningful,
because there's no need to provide a bogus code/key pair.
 2018-09-20 08:59:50 +02:00
Davide De Rosa 11cb312c02 Move control channel logic to PlainSerializer 2018-09-19 22:04:52 +02:00
Davide De Rosa 595cae3563 Add strategy for control channel serialization 2018-09-19 22:04:52 +02:00
Davide De Rosa 3608860b9d Move sessionId and remoteSessionId 2018-09-19 22:04:52 +02:00
Davide De Rosa 1573b2070a Move control queue management 
- Out packets
- In packets
- Acks
 2018-09-19 22:04:52 +02:00
Davide De Rosa e6dd4de472 Move control data parsing 2018-09-19 22:04:52 +02:00
Davide De Rosa 19ce7de819 Encapsulate control state into ControlChannel 
First step: variables + mutating funcs.
 2018-09-19 22:04:52 +02:00
Davide De Rosa d80c0b5460 Move in/out states to a generic struct 2018-09-19 22:04:52 +02:00
Davide De Rosa 2bd9484a43 Move ControlPacket serialization to Obj-C 
Additionally, make sessionId non-optional in control packets. They
must have it, therefore treat a missing sessionId as a programming
error instead.

Reuse routines for acks to make PacketMacros the only point of
packets serialization.
 2018-09-19 22:04:52 +02:00
Davide De Rosa 92dbb57666 Revert CommonPacket name to ControlPacket 2018-09-19 22:04:52 +02:00
Davide De Rosa 856fa9e12e Take PacketStream out and make public 
Useful for reuse in TCP streams.
 2018-09-19 22:04:52 +02:00
Davide De Rosa cba6f6f959 Clean up some documentation metadata 
- Reorder fields in SessionProxy.Configuration*
- Add new classes to .yml
 2018-09-19 22:04:52 +02:00
Davide De Rosa 6ffdcec47b Return optional from String/IPv4 conversion 2018-09-19 22:03:46 +02:00
Davide De Rosa da2727b003 Apply both IPv4 and IPv6 settings 
Best choice to cope with "hybrid" environments.
 2018-09-15 19:42:43 +02:00
Davide De Rosa ac3582c0fa Fix ignored OpenSSL code 2018-09-14 02:04:36 +02:00
Davide De Rosa b9243c9f0b Add some more peer-info 
- IV_PLAT
- IV_UI_VER
- IV_SSL
 2018-09-12 15:50:36 +02:00
Davide De Rosa 02a20b5308 Indent TunnelKitProvider.Configuration log 
Gives more context.
 2018-09-12 15:49:41 +02:00
Davide De Rosa 915638b163 Log negotiated parms at info level 
Useful when debug disabled.
 2018-09-12 15:48:47 +02:00
Davide De Rosa aef7daec51 Fix and clean up redundant nullability specifiers 2018-09-12 15:38:52 +02:00
Davide De Rosa a3fe740ad9 Assert ambiguity about HMAC key length 2018-09-12 15:21:25 +02:00
Davide De Rosa d53e7add10 Allow HMAC verify with nil cipher in CryptoCBC 2018-09-12 15:21:25 +02:00
Davide De Rosa 401d999b3d Expose HMAC digestLength where available 2018-09-12 15:21:25 +02:00
Davide De Rosa 4af0ce8739 Refactor duplicate keep-alive code 2018-09-09 00:52:16 +02:00
Davide De Rosa 3a02557b5e Override keep-alive with pushed interval 2018-09-09 00:52:16 +02:00
Davide De Rosa 4bf02198d1 Parse ping from PUSH_REPLY 2018-09-09 00:52:16 +02:00
Davide De Rosa 66864da51b Default to no keep-alive if unset 
For consistency with other optional flags.

Updates #20
 2018-09-08 12:56:40 +02:00
Davide De Rosa 01f65b2a7e Always shut down on known tunnel error 
Not recoverable by default (e.g algorithm mismatch).
 2018-09-08 00:10:35 +02:00
Davide De Rosa 891c72caa1 Rearrange shutdown code rationally 2018-09-08 00:10:35 +02:00
Davide De Rosa 8adb9871c3 Dispose tunnel if can't try next protocol 
Return boolean in socketShouldChangeProtocol indicating whether
another protocol is available.
 2018-09-08 00:10:35 +02:00
Davide De Rosa de09d0b5da Only try upgrade socket on network error 2018-09-08 00:10:35 +02:00
Davide De Rosa ecbad85b4a Discard 0 keep-alive interval 2018-09-08 00:06:19 +02:00
Davide De Rosa 582ef4875d Move default pingInterval to constructor 
Use CoreConfiguration only within Core.
 2018-09-08 00:00:07 +02:00
Davide De Rosa 65468207cb Transfer keep-alive to SessionProxy 2018-09-07 22:14:57 +02:00
Davide De Rosa fcfe1f3f68 Add keepAliveSeconds field in AppExtension 2018-09-07 22:13:40 +02:00
Davide De Rosa e9032e5490 Leave nil if push option parsed but unrecognized 
For whatever reason. Do not override with .disabled when not
necessarily intended.
 2018-09-07 15:22:03 +02:00
Davide De Rosa e5918d1b05 Override framing with pushed if available 2018-09-07 15:11:44 +02:00
Davide De Rosa 0304c4a5eb Parse compression framing from PUSH_REPLY 2018-09-07 15:10:19 +02:00
Davide De Rosa 55cdd6227c Interpret 0 reneg seconds as never 2018-09-07 14:58:56 +02:00
Davide De Rosa 14f5a68c12 Move appGroup out of Configuration 
Decouple VPN parameters.
 2018-09-07 00:25:21 +02:00
Davide De Rosa 1fbfe5b844 Document genericName method 2018-09-06 11:16:48 +02:00
Davide De Rosa 5b638ea5f6 Use different genericName for CBC/GCM 2018-09-06 11:16:14 +02:00
Davide De Rosa 0b28eacf0d Add more metadata to Cipher/Digest 
- Ciphers are AES.
- Digests are HMAC.
 2018-09-06 10:55:56 +02:00
Davide De Rosa ce6a41a218 Add more ciphers/digests 
No-brainer, OpenSSL EVP supports them.
 2018-09-06 10:38:18 +02:00
Davide De Rosa 802f7dc0f8 Fix debugLogFormat not copied to builder 2018-09-06 10:34:10 +02:00
Davide De Rosa d6b80ea449 Implement Codable in public entities 
Also rename CompressionFraming for being an extension of
SessionProxy.
 2018-09-06 10:34:10 +02:00
Davide De Rosa 43a5972737 Fix cipher regex in PUSH_REPLY 
Breaks with NCP enabled when cipher is not last. Trailing comma
was erroneously included in parsed cipher name.

Fixes #11
 2018-09-05 03:54:40 +02:00
Davide De Rosa 3aebedf5b8 Encapsulate complex serialization 2018-09-04 15:59:22 +02:00
Davide De Rosa e121555f82 Add Cipher.embedsDigest to signal digest embedding 
Currently GCM ciphers do.
 2018-09-04 15:57:07 +02:00
Davide De Rosa 3543f7aab3 Omit sensitive data from PUSH_REPLY log 
Namely auth-token.
 2018-09-02 12:48:45 +02:00
Davide De Rosa 201da9b69b Bump IV_VER to 2.4 
Enough to claim.
 2018-09-02 02:09:20 +02:00
Davide De Rosa bcc95ad510 Send NCP in peer-info 2018-09-02 02:09:20 +02:00
Davide De Rosa 81eb18619d Pick cipher from PUSH_REPLY if present 2018-09-02 02:09:20 +02:00
Davide De Rosa 31e694859f Cache aggregated PushReply object 
- authToken
- peerId
- cipher

Retain across soft resets.
 2018-09-02 02:09:20 +02:00
Davide De Rosa cff359fceb Parse pushed cipher if any 2018-09-02 02:09:20 +02:00
Davide De Rosa e900454504 Share connection completion code 
Across hard and soft reset.
 2018-09-02 02:09:20 +02:00
Davide De Rosa c930cda065 Consolidate DataPath with new flow 2018-09-02 02:09:20 +02:00
Davide De Rosa c01ac7e1e3 Postpone keys setup until after PUSH_REPLY 
And rename to setupEncryption() for ambiguity with SessionKey.
 2018-09-02 02:09:20 +02:00
Davide De Rosa 474e633e48 Parse arguments from regexp extension 
Further code simplification.
 2018-09-02 01:14:37 +02:00
Davide De Rosa 208fc48dd7 Drop unused DataPath protocols array 2018-08-31 01:59:08 +02:00
Davide De Rosa ec2950171b Use AF_INET6 according to IPv6 availability 2018-08-31 01:59:08 +02:00
Davide De Rosa 235c485cae Simplify regex matching with private extension 2018-08-31 01:59:08 +02:00
Davide De Rosa e6036095c9 Describe routes in IPv*Settings 2018-08-31 01:59:08 +02:00
Davide De Rosa 373a36b9c1 Parse and apply IPv6 settings when available 
IPv4 currently mandatory in PushReply (exception otherwise).
 2018-08-31 01:59:08 +02:00
Davide De Rosa ac0e7713d6 Parse IPv6 DNS servers 
dhcp-option can be DN6 (older) or DNS (newer).
 2018-08-31 01:59:08 +02:00
Davide De Rosa 97866e6f23 Set compression framing enum value by appearance 
0 = none (oldest)
1 = comp-lzo
2 = compress (newest)
 2018-08-31 01:58:18 +02:00
Davide De Rosa b050110e60 Bridge CompressionFraming to Swift 
Avoid exposing __TunnelKitNative module for using it.
 2018-08-31 01:40:58 +02:00
Davide De Rosa b81294f6e4 Parse IPv4 from String 2018-08-31 01:06:38 +02:00
Davide De Rosa 7723a7fe7d Move compression magic bytes back to PacketMacros 2018-08-30 19:33:23 +02:00
Davide De Rosa b0d264889c Extend PUSH_REPLY parsing 
- Topology
- Routes

Use the less confusing defaultGateway vs gatewayAddress.
 2018-08-30 18:02:12 +02:00
Davide De Rosa 5bf7813d56 Forward compound SessionReply to delegate 
Improves extensibility.
 2018-08-30 18:02:12 +02:00
Davide De Rosa 3dabc254bc Improve naming in crypto classes 
- Consistency in encryption/decryption flow
- Consistency in packet/payload
- DataPathChannel method names
 2018-08-30 17:52:50 +02:00
Davide De Rosa 5166ac3813 Move compression framing to stateless blocks 
Prepare payload blocks in DataPath.
 2018-08-30 17:11:22 +02:00
Davide De Rosa 31924c6038 Make peerId stateless, imply from blocks 
Will do the same with compressionFraming.
 2018-08-30 14:56:03 +02:00
Davide De Rosa e57ef9fb86 Fix duplicate memcpy in AEAD crypto 
Regression in #5
 2018-08-30 14:55:26 +02:00
Davide De Rosa 68810d9497 Add description to framing enum 2018-08-30 13:59:47 +02:00
Davide De Rosa 209889b9d2 Make compression framing an enum option 
- Disabled: no framing (default)
- CompLZO: NO_COMPRESS
- Compress: NO_COMPRESS_SWAP
 2018-08-30 12:43:36 +02:00
Davide De Rosa dee2956406 Rename Certificate to CryptoContainer 
Makes more sense as it holds certs and keys. Can be other formats
than PEM in the future.
 2018-08-28 12:55:27 +02:00
Davide De Rosa e6f509a26c Add client certificate to TunnelKitProvider 
Refactor composition of temporary file URL.

Also fix missing LZOFraming from Configuration.builder().
 2018-08-28 12:55:27 +02:00
Davide De Rosa a4c109a916 Bridge client cert from SessionProxy to TLSBox 2018-08-28 12:55:27 +02:00
Davide De Rosa b7a48d4f4f Support client certificate in TLSBox 2018-08-28 12:55:27 +02:00
Davide De Rosa 6a71ada1c8 Drop support for redundant EC curves 2018-08-28 12:55:27 +02:00
Davide De Rosa b172f79719 Re-license with proper per-file notices 
Clarify explicitly the author/extent of the fork, with proper
credit to the original project's license and copyright holder.
 2018-08-28 12:53:14 +02:00
Davide De Rosa c4b0964c3c Improve split naming 
*Socket + *Link
 2018-08-24 12:44:17 +02:00
Davide De Rosa 54cc811e47 Use MTU configuration for the link instead 
Raise default link MTU from 1000 to 1250. Keep default for
tunnel MTU.
 2018-08-24 12:37:09 +02:00
Davide De Rosa 6208fe8e21 Split GenericSocket and LinkInterface 
Keep socket and link logic separated. Allows for setting MTU
specifically for the link.

- UDP: hardcoded 1000
- TCP: ignored (.max)
 2018-08-24 12:36:35 +02:00
Davide De Rosa 94890c08cf Do not deprecate until replacement 
Implement new compression framing later.
 2018-08-24 00:48:17 +02:00
Davide De Rosa 9f54e624ee Expose LZO framing option 2018-08-24 00:27:45 +02:00
Davide De Rosa 8836d2b175 Deprecate LZO compression framing 
Prepend NO_COMPRESS if enabled, omit if not (default).
 2018-08-24 00:18:42 +02:00
Davide De Rosa fe7a2c6941 Drop a few old commented lines 2018-08-23 18:51:36 +02:00
Davide De Rosa 2459fe1bfd Move a few classes inside SessionProxy 
- Authenticator
- EncryptionBridge (formerly EncryptionProxy)
- PushReply
- SessionKey

They only make sense there. Content unchanged.
 2018-08-23 18:51:36 +02:00
Davide De Rosa 6d5e9f68a9 Move cipher/digest enums to Core 
Restrict choice to supported OpenSSL algorithms.
 2018-08-23 18:51:36 +02:00
Davide De Rosa 8a9e99e6a9 Wrap SessionProxy configuration in a builder 2018-08-23 18:51:36 +02:00
Davide De Rosa 897e824340 Enforce use of non-preset CA certificates 2018-08-23 12:11:55 +02:00
Davide De Rosa dfac465c1d Drop support for PIA HARD_RESET patch 2018-08-23 12:11:55 +02:00
Davide De Rosa 4d03df7066 Finish up renaming in headers and prefixes 2018-08-23 12:10:56 +02:00
Davide De Rosa fe665e8ad5 Rename library to TunnelKit 2018-08-23 12:10:41 +02:00