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042ed6bf69
Updates #14690 Change-Id: Ib85e318d48450fc6534f7b0c1d4cc4335de7c0ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
150 lines
5.3 KiB
Go
150 lines
5.3 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package bakedroots contains WebPKI CA roots we bake into the tailscaled binary,
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// lest the system's CA roots be missing them (or entirely empty).
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package bakedroots
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import (
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"crypto/x509"
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"sync"
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"tailscale.com/util/testenv"
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)
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// Get returns the baked-in roots.
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//
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// As of 2025-01-21, this includes only the LetsEncrypt ISRG Root X1 root.
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func Get() *x509.CertPool {
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roots.once.Do(func() {
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roots.parsePEM(append(
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[]byte(letsEncryptX1),
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letsEncryptX2...,
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))
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})
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return roots.p
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}
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// testingTB is a subset of testing.TB needed
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// to verify the caller isn't in a parallel test.
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type testingTB interface {
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// Setenv panics if it's in a parallel test.
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Setenv(k, v string)
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}
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// ResetForTest resets the cached roots for testing,
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// optionally setting them to caPEM if non-nil.
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func ResetForTest(tb testingTB, caPEM []byte) {
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if !testenv.InTest() {
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panic("not in test")
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}
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tb.Setenv("ASSERT_NOT_PARALLEL_TEST", "1") // panics if tb's Parallel was called
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roots = rootsOnce{}
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if caPEM != nil {
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roots.once.Do(func() { roots.parsePEM(caPEM) })
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}
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}
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var roots rootsOnce
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type rootsOnce struct {
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once sync.Once
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p *x509.CertPool
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}
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func (r *rootsOnce) parsePEM(caPEM []byte) {
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p := x509.NewCertPool()
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if !p.AppendCertsFromPEM(caPEM) {
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panic("bogus PEM")
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}
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r.p = p
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}
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/*
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letsEncryptX1 is the LetsEncrypt X1 root:
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Certificate:
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Data:
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Version: 3 (0x2)
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Serial Number:
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82:10:cf:b0:d2:40:e3:59:44:63:e0:bb:63:82:8b:00
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Signature Algorithm: sha256WithRSAEncryption
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Issuer: C = US, O = Internet Security Research Group, CN = ISRG Root X1
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Validity
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Not Before: Jun 4 11:04:38 2015 GMT
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Not After : Jun 4 11:04:38 2035 GMT
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Subject: C = US, O = Internet Security Research Group, CN = ISRG Root X1
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Subject Public Key Info:
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Public Key Algorithm: rsaEncryption
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RSA Public-Key: (4096 bit)
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We bake it into the binary as a fallback verification root,
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in case the system we're running on doesn't have it.
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(Tailscale runs on some ancient devices.)
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To test that this code is working on Debian/Ubuntu:
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$ sudo mv /usr/share/ca-certificates/mozilla/ISRG_Root_X1.crt{,.old}
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$ sudo update-ca-certificates
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Then restart tailscaled. To also test dnsfallback's use of it, nuke
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your /etc/resolv.conf and it should still start & run fine.
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*/
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const letsEncryptX1 = `
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-----BEGIN CERTIFICATE-----
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MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw
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TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
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cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4
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WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu
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ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY
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MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc
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h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+
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0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U
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A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW
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T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH
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B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC
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B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv
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KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn
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OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn
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jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw
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qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI
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rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV
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HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq
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hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL
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ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ
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3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK
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NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5
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ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur
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TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC
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jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc
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oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq
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4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA
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mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d
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emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=
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-----END CERTIFICATE-----
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`
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// letsEncryptX2 is the ISRG Root X2.
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//
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// Subject: O = Internet Security Research Group, CN = ISRG Root X2
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// Key type: ECDSA P-384
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// Validity: until 2035-09-04 (generated 2020-09-04)
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const letsEncryptX2 = `
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-----BEGIN CERTIFICATE-----
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MIICGzCCAaGgAwIBAgIQQdKd0XLq7qeAwSxs6S+HUjAKBggqhkjOPQQDAzBPMQsw
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CQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFyY2gg
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R3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBYMjAeFw0yMDA5MDQwMDAwMDBaFw00
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MDA5MTcxNjAwMDBaME8xCzAJBgNVBAYTAlVTMSkwJwYDVQQKEyBJbnRlcm5ldCBT
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ZWN1cml0eSBSZXNlYXJjaCBHcm91cDEVMBMGA1UEAxMMSVNSRyBSb290IFgyMHYw
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EAYHKoZIzj0CAQYFK4EEACIDYgAEzZvVn4CDCuwJSvMWSj5cz3es3mcFDR0HttwW
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+1qLFNvicWDEukWVEYmO6gbf9yoWHKS5xcUy4APgHoIYOIvXRdgKam7mAHf7AlF9
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ItgKbppbd9/w+kHsOdx1ymgHDB/qo0IwQDAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0T
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AQH/BAUwAwEB/zAdBgNVHQ4EFgQUfEKWrt5LSDv6kviejM9ti6lyN5UwCgYIKoZI
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zj0EAwMDaAAwZQIwe3lORlCEwkSHRhtFcP9Ymd70/aTSVaYgLXTWNLxBo1BfASdW
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tL4ndQavEi51mI38AjEAi/V3bNTIZargCyzuFJ0nN6T5U6VR5CmD1/iQMVtCnwr1
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/q4AaOeMSQ+2b1tbFfLn
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-----END CERTIFICATE-----
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`
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