8 Commits (ad1cfe8bbeba2b4a995c0e242c6b3ca9576c4403)

Author	SHA1	Message	Date
Wendi Yu	499c8fcbb3	Replace our ratelimiter with standard rate package (#359) ... * Replace our ratelimiter with standard rate package Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>	5 years ago
Avery Pennarun	ee3395e63a	wgengine/filter: fix linter warning. ... Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	65fbb9c303	wgengine/filter: support subnet mask rules, not just /32 IPs. ... This depends on improved support from the control server, to send the new subnet width (Bits) fields. If these are missing, we fall back to assuming their value is /32. Conversely, if the server sends Bits fields to an older client, it will interpret them as /32 addresses. Since the only rules we allow are "accept" rules, this will be narrower or equal to the intended rule, so older clients will simply reject hosts on the wider subnet (fail closed). With this change, the internal filter.Matches format has diverged from the wire format used by controlclient, so move the wire format into tailcfg and convert it to filter.Matches in controlclient. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Avery Pennarun	85e675940d	wgengine/filter: allow ICMP response packets. ... Longer term, we should probably update the packet filter to be fully stateful, for both TCP and ICMP. That is, only ICMP packets related to a session *we* initiated should be allowed back in. But this is reasonably secure for now, since wireguard is already trimming most traffic. The current code would not protect against eg. Ping-of-Death style attacks from VPN nodes. Fixes tailscale/tailscale#290. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>	5 years ago
Brad Fitzpatrick	2e420ad8b6	wgengine, wgengine/filter: minor doc, style, performance, locking changes ... Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Avery Pennarun	f53e78e0d5	wgengine: don't lose filter state on filter reconfig. ... We were abandoning the UDP port LRU every time we got a new packet filter from tailcontrol, which caused return packets to suddenly stop arriving.	5 years ago
David Crawshaw	d417be6a4b	controlclinet: clone filter.MatchAllowAll ... This avoids a non-obvious data race, where the JSON decoder ends up creating do-nothing writes into global variables. ================== WARNING: DATA RACE Write at 0x0000011e1860 by goroutine 201: tailscale.com/wgengine/packet.(*IP).UnmarshalJSON() /home/crawshaw/repo/corp/oss/wgengine/packet/packet.go:83 +0x2d9 encoding/json.(*decodeState).literalStore() /home/crawshaw/go/go/src/encoding/json/decode.go:877 +0x445e ... encoding/json.Unmarshal() /home/crawshaw/go/go/src/encoding/json/decode.go:107 +0x1de tailscale.com/control/controlclient.(*Direct).decodeMsg() /home/crawshaw/repo/corp/oss/control/controlclient/direct.go:615 +0x1ab tailscale.com/control/controlclient.(*Direct).PollNetMap() /home/crawshaw/repo/corp/oss/control/controlclient/direct.go:525 +0x1053 tailscale.com/control/controlclient.(*Client).mapRoutine() /home/crawshaw/repo/corp/oss/control/controlclient/auto.go:428 +0x3a6 Previous read at 0x0000011e1860 by goroutine 86: tailscale.com/wgengine/filter.matchIPWithoutPorts() /home/crawshaw/repo/corp/oss/wgengine/filter/match.go:108 +0x91 tailscale.com/wgengine/filter.(*Filter).runIn() /home/crawshaw/repo/corp/oss/wgengine/filter/filter.go:147 +0x3c6 tailscale.com/wgengine/filter.(*Filter).RunIn() /home/crawshaw/repo/corp/oss/wgengine/filter/filter.go:127 +0xb0 tailscale.com/wgengine.(*userspaceEngine).SetFilter.func1() /home/crawshaw/repo/corp/oss/wgengine/userspace.go:390 +0xfc github.com/tailscale/wireguard-go/device.(*Device).RoutineDecryption() /home/crawshaw/repo/corp/wireguard-go/device/receive.go:295 +0xa1f For #112 Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
Earl Lee	a8d8b8719a	Move Linux client & common packages into a public repo.	5 years ago