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* conn: unbreak boundif on androidJason A. Donenfeld2020-06-072-44/+24
| | | | | | Another thing never tested ever. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* conn: fix windows situation with boundifJason A. Donenfeld2020-06-071-4/+4
| | | | | | This was evidently never tested before committing. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* replay: account for fqcodel reorderingJason A. Donenfeld2020-05-191-1/+1
| | | | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* device: rework padding calculation and don't shadow paddedSizeJason A. Donenfeld2020-05-181-15/+17
| | | | | Reported-by: Jayakumar S <jayakumar82.s@gmail.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* global: update header comments and modulesJason A. Donenfeld2020-05-0235-35/+35
| | | | Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* device: use atomic access for unlocked keypair.nextJason A. Donenfeld2020-05-024-11/+23
| | | | | | | | | Go's GC semantics might not always guarantee the safety of this, and the race detector gets upset too, so instead we wrap this all in atomic accessors. Reported-by: David Anderson <danderson@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
* device: add debug logs describing handshake rejectionAvery Pennarun2020-05-021-4/+8
| | | | | | | Useful in testing when bad network stacks repeat or batch large numbers of packets. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
* device: return generic error from Ipc{Get,Set}Operation.David Anderson2020-05-021-4/+15
| | | | | | | This makes uapi.go's public API conform to Go style in terms of error types. Signed-off-by: David Anderson <danderson@tailscale.com>
* device: give handshake state a typeDavid Crawshaw2020-05-021-17/+38
| | | | | | And unexport handshake constants. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
* tuntest: split out testing packageDavid Crawshaw2020-05-021-141/+5
| | | | | | This code is useful to other packages writing tests. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
* conn: introduce new package that splits out the Bind and Endpoint typesDavid Crawshaw2020-05-0214-1294/+419
| | | | | | | | | | The sticky socket code stays in the device package for now, as it reaches deeply into the peer list. This is the first step in an effort to split some code out of the very busy device package. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
* device: add test to ensure Peer fields are safe for atomic access on 32-bitDavid Anderson2020-05-022-1/+48
| | | | | | | | | Adds a test that will fail consistently on 32-bit platforms if the struct ever changes again to violate the rules. This is likely not needed because unaligned access crashes reliably, but this will reliably fail even if tests accidentally pass due to lucky alignment. Signed-Off-By: David Anderson <danderson@tailscale.com>
* version: bump snapshot0.0.20200320Jason A. Donenfeld2020-03-201-1/+1
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* noise: unify zero checking of ecdhJason A. Donenfeld2020-03-173-63/+49
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* global: use RTMGRP_* consts from x/sys/unixTobias Klauser2020-03-171-1/+1
| | | | | | | | Update the golang.org/x/sys/unix dependency and use the newly introduced RTMGRP_* consts instead of using the corresponding RTNLGRP_* const to create a mask. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
* send: account for zero mtuJason A. Donenfeld2020-02-141-4/+12
| | | | Don't divide by zero.
* device: fix private key removal logicJason A. Donenfeld2020-02-041-13/+4
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* uapi: allow unsetting device private key with /dev/nullJason A. Donenfeld2020-02-042-1/+10
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* version: bump snapshot0.0.20200121Jason A. Donenfeld2020-01-211-1/+1
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* README: update repo urlsJason A. Donenfeld2019-12-301-1/+1
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* device: SendmsgN mutates the input sockaddrJason A. Donenfeld2019-11-281-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So we take a new granular lock to prevent concurrent writes from racing. WARNING: DATA RACE Write at 0x00c0011f2740 by goroutine 27: golang.org/x/sys/unix.(*SockaddrInet4).sockaddr() /go/pkg/mod/golang.org/x/sys@v0.0.0-20191105231009-c1f44814a5cd/unix/syscall_linux.go:384 +0x114 golang.org/x/sys/unix.SendmsgN() /go/pkg/mod/golang.org/x/sys@v0.0.0-20191105231009-c1f44814a5cd/unix/syscall_linux.go:1304 +0x288 golang.zx2c4.com/wireguard/device.send4() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/conn_linux.go:485 +0x11f golang.zx2c4.com/wireguard/device.(*nativeBind).Send() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/conn_linux.go:268 +0x1d6 golang.zx2c4.com/wireguard/device.(*Peer).SendBuffer() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/peer.go:151 +0x285 golang.zx2c4.com/wireguard/device.(*Peer).SendHandshakeInitiation() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/send.go:163 +0x692 golang.zx2c4.com/wireguard/device.(*Device).RoutineReadFromTUN() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/send.go:318 +0x4b8 Previous write at 0x00c0011f2740 by goroutine 386: golang.org/x/sys/unix.(*SockaddrInet4).sockaddr() /go/pkg/mod/golang.org/x/sys@v0.0.0-20191105231009-c1f44814a5cd/unix/syscall_linux.go:384 +0x114 golang.org/x/sys/unix.SendmsgN() /go/pkg/mod/golang.org/x/sys@v0.0.0-20191105231009-c1f44814a5cd/unix/syscall_linux.go:1304 +0x288 golang.zx2c4.com/wireguard/device.send4() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/conn_linux.go:485 +0x11f golang.zx2c4.com/wireguard/device.(*nativeBind).Send() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/conn_linux.go:268 +0x1d6 golang.zx2c4.com/wireguard/device.(*Peer).SendBuffer() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/peer.go:151 +0x285 golang.zx2c4.com/wireguard/device.(*Peer).SendHandshakeInitiation() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/send.go:163 +0x692 golang.zx2c4.com/wireguard/device.expiredRetransmitHandshake() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/timers.go:110 +0x40c golang.zx2c4.com/wireguard/device.(*Peer).NewTimer.func1() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/timers.go:42 +0xd8 Goroutine 27 (running) created at: golang.zx2c4.com/wireguard/device.NewDevice() /go/pkg/mod/golang.zx2c4.com/wireguard@v0.0.20191012/device/device.go:322 +0x5e8 main.main() /go/src/x/main.go:102 +0x58e Goroutine 386 (finished) created at: time.goFunc() /usr/local/go/src/time/sleep.go:168 +0x51 Reported-by: Ben Burkert <ben@benburkert.com>
* constants: recalculate rekey max based on a one minute floodJason A. Donenfeld2019-10-301-1/+1
| | | | Discussed-with: Mathias Hall-Andersen <mathias@hall-andersen.dk>
* global: fix a few typos courtesy of codespellJonathan Tooker2019-10-222-7/+7
| | | | Signed-off-by: Jonathan Tooker <jonathan.tooker@netprotect.com>
* device: allow blackholing socketsJason A. Donenfeld2019-10-212-4/+14
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* device: remove dead error reporting codeJason A. Donenfeld2019-10-211-4/+1
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* device: recheck counters while holding write lockJason A. Donenfeld2019-10-171-2/+7
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* device: test packets between two fake devicesDavid Crawshaw2019-10-161-29/+199
| | | | Signed-off-by: David Crawshaw <crawshaw@tailscale.io>
* version: bump snapshot0.0.20191012Jason A. Donenfeld2019-10-121-1/+1
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* uapi: allow preventing creation of new peers when updatingJason A. Donenfeld2019-10-041-1/+17
| | | | | | This enables race-free updates for wg-dynamic and similar tools. Suggested-by: Thomas Gschwantner <tharre3@gmail.com>
* version: bump snapshot0.0.20190908Jason A. Donenfeld2019-09-081-1/+1
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* device: getsockname on linux to determine portJason A. Donenfeld2019-08-251-0/+10
| | | | | It turns out Go isn't passing the pointer properly so we wound up with a zero port every time.
* version: bump snapshot0.0.20190805Jason A. Donenfeld2019-08-051-1/+1
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* device: drop lock before expiring keysJason A. Donenfeld2019-08-051-4/+11
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* uapi: skip peers with invalid keysJason A. Donenfeld2019-08-052-4/+16
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* device: do not crash on nil'd bind in windows bindingJason A. Donenfeld2019-07-181-0/+5
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* device: immediately rekey all peers after changing device private keyJason A. Donenfeld2019-07-112-0/+25
| | | | Reported-by: Derrick Pallas <derrick@pallas.us>
* device: receive: uniform message for source address checkJason A. Donenfeld2019-07-011-1/+1
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* device: receive: simplify flush loopJason A. Donenfeld2019-07-011-35/+12
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* tun: remove TUN prefix from types to reduce stutter elsewhereMatt Layher2019-06-143-15/+14
| | | | Signed-off-by: Matt Layher <mdlayher@gmail.com>
* device: update transfer counters correctlyJason A. Donenfeld2019-06-113-4/+9
| | | | | The rule is to always update them to the full packet size minus UDP/IP encapsulation for all authenticated packet types.
* device: remove redundant return statementsMatt Layher2019-06-041-3/+0
| | | | | | | | | | | More staticcheck fixes: $ staticcheck ./... | grep S1023 device/noise-helpers.go:45:2: redundant return statement (S1023) device/noise-helpers.go:54:2: redundant return statement (S1023) device/noise-helpers.go:64:2: redundant return statement (S1023) Signed-off-by: Matt Layher <mdlayher@gmail.com>
* device: use bytes.Equal for equality check, simplify assertEqualMatt Layher2019-06-041-2/+2
| | | | Signed-off-by: Matt Layher <mdlayher@gmail.com>
* device, ratelimiter: replace uses of time.Now().Sub() with time.Since()Matt Layher2019-06-034-9/+9
| | | | | | | | | | | | | | | | | | | | | | | Simplification found by staticcheck: $ staticcheck ./... | grep S1012 device/cookie.go:90:5: should use time.Since instead of time.Now().Sub (S1012) device/cookie.go:127:5: should use time.Since instead of time.Now().Sub (S1012) device/cookie.go:242:5: should use time.Since instead of time.Now().Sub (S1012) device/noise-protocol.go:304:13: should use time.Since instead of time.Now().Sub (S1012) device/receive.go:82:46: should use time.Since instead of time.Now().Sub (S1012) device/send.go:132:5: should use time.Since instead of time.Now().Sub (S1012) device/send.go:139:5: should use time.Since instead of time.Now().Sub (S1012) device/send.go:235:59: should use time.Since instead of time.Now().Sub (S1012) device/send.go:393:9: should use time.Since instead of time.Now().Sub (S1012) ratelimiter/ratelimiter.go:79:10: should use time.Since instead of time.Now().Sub (S1012) ratelimiter/ratelimiter.go:87:10: should use time.Since instead of time.Now().Sub (S1012) Change applied using: $ find . -type f -name "*.go" -exec sed -i "s/Now().Sub(/Since(/g" {} \; Signed-off-by: Matt Layher <mdlayher@gmail.com>
* device: add SendKeepalivesToPeersWithCurrentKeypair for handoverJason A. Donenfeld2019-05-301-0/+17
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* device, tun: rearrange code and fix device testsMatt Layher2019-05-292-10/+86
| | | | Signed-off-by: Matt Layher <mdlayher@gmail.com>
* device: darwin actually doesn't need bound interfacesJason A. Donenfeld2019-05-251-44/+0
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* device: make initiations per second match kernel implementationJason A. Donenfeld2019-05-251-1/+1
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* device: timers: add jitter on ack failure reinitiationJason A. Donenfeld2019-05-241-1/+1
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* device: fail to give bind if it doesn't existJason A. Donenfeld2019-05-172-2/+13
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* version: bump snapshot0.0.20190517Jason A. Donenfeld2019-05-171-1/+1
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