7 Commits (bc4381447f0403b74c5459fb4af179a843c1b8d1)

Author	SHA1	Message	Date
Brad Fitzpatrick	974be2ec5c	net/interfaces: rewrite the darwin likelyHomeRouterIP from C to Go ... We basically already had the RIB-parsing Go code for this in both net/interfaces and wgengine/monitor, for other reasons. Fixes #1426 Fixes #1471 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	8a55d463c8	net/interfaces: merge darwin files for DefaultRouteInterface in sandbox ... DefaultRouteInterface was previously guarded by build tags such that it was only accessible to tailscaled-on-macos, but there was no reason for that. It runs fine in the sandbox and gives better default info, so merge its file into interfaces_darwin.go. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	a6cad71fb2	go.mod: upgrade staticcheck to 0.1.0 ... Also run go.mod and fix some staticcheck warnings. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	1ebbaaaebb	net/interfaces: make syscall and netstat agree when multiple gateways are present ... likelyHomeRouterIPDarwinSyscall iterates through the list of routes, looking for a private gateway, returning the first one it finds. likelyHomeRouterIPDarwinExec does the same thing, except that it returns the last one it finds. As a result, when there are multiple gateways, TestLikelyHomeRouterIPSyscallExec fails. (At least, I think that that is what is happening; I am going inferring from observed behavior.) Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	a16a793605	net/interfaces: use syscalls to find private gateway IP address ... iOS doesn't let you run subprocesses, which means we can't use netstat to get routing information. Instead, use syscalls and grub around in the results. We keep the old netstat version around, both for use in non-cgo builds, and for use testing the syscall-based version. Note that iOS doesn't ship route.h, so we include a copy here from the macOS 10.15 SDK (which is itself unchanged from the 10.14 SDK). I have tested manually that this yields the correct gateway IP address on my own macOS and iOS devices. More coverage would be most welcome. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Brad Fitzpatrick	c253d4f948	net/interfaces: don't try to fork on iOS in likelyHomeRouterIPDarwin ... No subprocesses allowed on iOS. Will need to do this differently later.	4 years ago
Brad Fitzpatrick	32156330a8	net/interfaces: add func LikelyHomeRouterIP ... For discovering where we might direct NAT-PMP/PCP/UPnP queries at in the future.	4 years ago