11 Commits (2755f3843c6f5d91d3f54e57091c531bd18170d5)

Author	SHA1	Message	Date
Andrew Dunham	2755f3843c	health, net/tlsdial: add healthcheck for self-signed cert ... When we make a connection to a server, we previously would verify with the system roots, and then fall back to verifying with our baked-in Let's Encrypt root if the system root cert verification failed. We now explicitly check for, and log a health error on, self-signed certificates. Additionally, we now always verify against our baked-in Let's Encrypt root certificate and log an error if that isn't successful. We don't consider this a health failure, since if we ever change our server certificate issuer in the future older non-updated versions of Tailscale will no longer be healthy despite being able to connect. Updates #3198 Change-Id: I00be5ceb8afee544ee795e3c7a2815476abc4abf Signed-off-by: Andrew Dunham <andrew@du.nham.ca>	1 year ago
Will Norris	71029cea2d	all: update copyright and license headers ... This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>	1 year ago
Brad Fitzpatrick	74674b110d	envknob: support changing envknobs post-init ... Updates #5114 Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	116f55ff66	all: gofmt for Go 1.19 ... Updates #5210 Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	41fd4eab5c	envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) ... A new package can also later record/report which knobs are checked and set. It also makes the code cleaner & easier to grep for env knobs. Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	7cf8ec8108	net/tlsdial: bake in LetsEncrypt's ISRG Root X1 root ... We still try the host's x509 roots first, but if that fails (like if the host is old), we fall back to using LetsEncrypt's root and retrying with that. tlsdial was used in the three main places: logs, control, DERP. But it was missing in dnsfallback. So added it there too, so we can run fine now on a machine with no DNS config and no root CAs configured. Also, move SSLKEYLOGFILE support out of DERP. tlsdial is the logical place for that support. Fixes #1609 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	cf0d19f0ab	net/tlsdial, derp/derphttp: finish DERPNode.CertName validation	4 years ago
Brad Fitzpatrick	2244cca5ff	net/tlsdial: update package doc to say it's now somewhat useless	4 years ago
Brad Fitzpatrick	172d72a060	Revert "net/tlsdial: add memory-optimized TLS cert verification path for iOS" ... This reverts commit 6fcbd4c4d4. Decided to put it in tailscale/go's crypto/x509 instead.	4 years ago
Brad Fitzpatrick	6fcbd4c4d4	net/tlsdial: add memory-optimized TLS cert verification path for iOS ... Behind a build tag for now.	4 years ago
Brad Fitzpatrick	b6fa5a69be	net/tlsdial: add package for TLS dials, and make DERP & controlclient use it ... This will do the iOS-optimized cert checking in a following change.	4 years ago