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2021-08-05memmod: register exception handler tablesJason A. Donenfeld
Otherwise recent WDK binaries fail on ARM64, where an exception handler is used for trapping an illegal instruction when ARMv8.1 atomics are being tested for functionality. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-07-29memmod: fix protected delayed load the right wayJason A. Donenfeld
The reason this was failing before is that dloadsup.h's DloadObtainSection was doing a linear search of sections to find which header corresponds with the IMAGE_DELAYLOAD_DESCRIPTOR section, and we were stupidly overwriting the VirtualSize field, so the linear search wound up matching the .text section, which then it found to not be marked writable and failed with FAST_FAIL_DLOAD_PROTECTION_FAILURE. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-07-29memmod: disable protected delayed load for nowJason A. Donenfeld
Probably a bad idea, but we don't currently support it, and those huge windows.NewCallback trampolines make juicer targets anyway. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08memmod: use resource functions from x/sysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08memmod: do not use IsBadReadPtrJason A. Donenfeld
It should be enough to check for the trailing zero name. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28global: bump copyrightJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-20tun/wintun/memmod: gofmtJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-20tun/wintun/memmod: fix format verbJosh Bleecher Snyder
Caught by 'go vet'. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-07memmod: apply explicit build tags to _32 and _64 filesJason A. Donenfeld
Since _32 and _64 aren't valid goarchs, they don't match _GOOS_GOARCH, and so the existing tags wind up not being restricted to windows-only. This fixes the problem by adding windows to the tags explicitly. We could also fix it by calling the files _32_windows or _64_windows, but that changes the convention with the other single-arch files. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-07wintun: do not load dll in init()Jason A. Donenfeld
This prevents linking to wintun.dll until it's actually needed, which should improve startup time. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-27memmod: fix import loading function usageJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-11wintun: load from filesystem by defaultJason A. Donenfeld
We let people loading this from resources opt in via: go build -tags load_wintun_from_rsrc Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07global: switch to using %w instead of %v for ErrorfJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07wintun: ring management moved to wintun.dllSimon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07wintun: load wintun.dll from RCDATA resourceSimon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-11-07wintun: migrate to wintun.dll APISimon Rozman
Rather than having every application using Wintun driver reinvent the wheel, the Wintun device/adapter/interface management has been moved from wireguard-go to wintun.dll deployed with Wintun itself. Signed-off-by: Simon Rozman <simon@rozman.si>
2020-10-21tun/wintun/registry: fix Go 1.15 race/checkptr failureBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> [Jason: ran go mod tidy.] Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02global: update header comments and modulesJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2020-05-02wintun: make remaining HWID comparisons case insensitiveSimon Rozman
c85e4a410f27986a2967a49c0155633c716bf3ca introduced preliminary HWID checking to speed up Wintun adapter enumeration. However, all HWID are case insensitive by Windows convention. Furthermore, a device might have multiple HWIDs. When DevInfo's DeviceRegistryProperty(SPDRP_HARDWAREID) method returns []string, all strings returned should be checked against given hardware ID. This issue was discovered when researching Wintun and wireguard-go on Windows 10 ARM64. The Wintun adapter was created using devcon.exe utility with "wintun" hardware ID, causing wireguard-go fail to enumerate the adapter properly. Signed-off-by: Simon Rozman <simon@rozman.si>
2020-05-02setupapi: extend struct size constant definitions for arm(64)Simon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si>
2020-05-02wintun: split error message for create vs open namespace.Avery Pennarun
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
2019-11-22wintun: manage ring memory manuallyJason A. Donenfeld
It's large and Go's garbage collector doesn't deal with it especially well.
2019-10-22global: fix a few typos courtesy of codespellJonathan Tooker
Signed-off-by: Jonathan Tooker <jonathan.tooker@netprotect.com>
2019-10-21namespaceapi: remove tasteless commentJason A. Donenfeld
2019-10-17wintun: normalize variable names for their typesJason A. Donenfeld
2019-10-17wintun: quickly ignore non-Wintun devicesAvery Pennarun
Some devices take ~2 seconds to enumerate on Windows if we try to get their instance name. The hardware id property, on the other hand, is available right away. Signed-off-by: Avery Pennarun <apenwarr@gmail.com> [zx2c4: inlined this to where it makes sense, reused setupapi const]
2019-10-08wintun: expose versionJason A. Donenfeld
2019-10-04mod: bump versionsJason A. Donenfeld
2019-09-16winpipe: use x/sys/windows instead of syscallJason A. Donenfeld
2019-09-16wintun: use correct length for security attributesJason A. Donenfeld
2019-09-05namespaceapi: AddSIDToBoundaryDescriptor modifies the handleJason A. Donenfeld
2019-09-01wintun: take mutex first alwaysJason A. Donenfeld
This prevents an ABA deadlock with setupapi's internal locks.
2019-09-01wintun: consider abandoned mutexes as releasedJason A. Donenfeld
2019-08-30wintun: put mutex into private namespaceJason A. Donenfeld
2019-08-30namespaceapi: fix mistakeJason A. Donenfeld
2019-08-30namespaceapi: initial versionSimon Rozman
Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-30wintun: take mutex so that deletion uses the right nameJason A. Donenfeld
2019-08-29wintun: move ring constants into moduleJason A. Donenfeld
2019-08-29wintun: delete all interfaces is not used anymoreJason A. Donenfeld
2019-08-29wintun: Wintun->InterfaceJason A. Donenfeld
2019-08-29wintun: keep reference to pool in wintun objectJason A. Donenfeld
2019-08-29wintun: introduce adapter poolsSimon Rozman
This makes wintun package reusable for non-WireGuard applications. Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-28wintun: simplify rename logicJason A. Donenfeld
2019-08-28wintun: give better errors when ndis interface listing failsJason A. Donenfeld
2019-08-28wintun: also check for numbered suffix and friendly nameJason A. Donenfeld
2019-08-28wintun: upgrade deleting all interfaces and make it reusableSimon Rozman
DeleteAllInterfaces() didn't check if SPDRP_DEVICEDESC == "WireGuard Tunnel". It deleted _all_ Wintun adapters, not just WireGuard's. Furthermore, the DeleteAllInterfaces() was upgraded into a new function called DeleteMatchingInterfaces() for selectively deletion. This will be used by WireGuard to clean stale Wintun adapters. Signed-off-by: Simon Rozman <simon@rozman.si>
2019-08-27wintun: cleanup earlierJason A. Donenfeld
2019-08-27wintun: rename duplicate adapters instead of ourselvesJason A. Donenfeld
2019-08-26wintun: match suffix numbersJason A. Donenfeld
2019-08-24wintun: make description consistent across fieldsJason A. Donenfeld
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