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caddytls: Match automation policies by wildcard subjects too

Browse source 
https://caddy.community/t/wildcard-snis-not-being-matched/7271/24?u=matt

Also use new CertMagic function for matching wildcard names
This commit is contained in:
Matthew Holt 2020-03-26 14:01:38 -06:00
parent 5c55e5d53f
commit c87f82f0ce
No known key found for this signature in database
GPG key ID: 2A349DD577D586A5
4 changed files with 12 additions and 26 deletions
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6
go.mod
View file

@ -5,10 +5,10 @@ go 1.14
require (
github.com/Masterminds/sprig/v3 v3.0.2
github.com/alecthomas/chroma v0.7.2-0.20200305040604-4f3623dce67a
github.com/caddyserver/certmagic v0.10.4
github.com/caddyserver/certmagic v0.10.5
github.com/dustin/go-humanize v1.0.1-0.20200219035652-afde56e7acac
github.com/go-acme/lego/v3 v3.5.0
github.com/google/cel-go v0.4.0
github.com/google/cel-go v0.4.1
github.com/jsternberg/zap-logfmt v1.2.0
github.com/klauspost/compress v1.10.3
github.com/klauspost/cpuid v1.2.3
@ -21,7 +21,7 @@ require (
github.com/smallstep/cli v0.14.0-rc.3
github.com/smallstep/truststore v0.9.4
github.com/vulcand/oxy v1.1.0
github.com/yuin/goldmark v1.1.25
github.com/yuin/goldmark v1.1.26
github.com/yuin/goldmark-highlighting v0.0.0-20200307114337-60d527fdb691
go.uber.org/zap v1.14.1
golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59

12
go.sum
View file

@ -120,8 +120,8 @@ github.com/bombsimon/wsl/v2 v2.0.0/go.mod h1:mf25kr/SqFEPhhcxW1+7pxzGlW+hIl/hYTK
github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
github.com/caddyserver/certmagic v0.10.4 h1:3jRzfMnOVsmGo2XYZ7mkksgoB14my1CTmqc1Apx7qsg=
github.com/caddyserver/certmagic v0.10.4/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
github.com/caddyserver/certmagic v0.10.5 h1:Dg4ipO1y23rWvFmiiRqhtUTh5Hy7PmfoFvPfDpnE8Z8=
github.com/caddyserver/certmagic v0.10.5/go.mod h1:Y8jcUBctgk/IhpAzlHKfimZNyXCkfGgRTC0orl8gROQ=
github.com/cenkalti/backoff/v4 v4.0.0 h1:6VeaLF9aI+MAUQ95106HwWzYZgJJpZ4stumjj6RFYAU=
github.com/cenkalti/backoff/v4 v4.0.0/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@ -298,8 +298,8 @@ github.com/golangci/revgrep v0.0.0-20180812185044-276a5c0a1039/go.mod h1:qOQCunE
github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4/go.mod h1:Izgrg8RkN3rCIMLGE9CyYmU9pY2Jer6DgANEnZ/L/cQ=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/cel-go v0.4.0 h1:9i5p9ms/kph/Lau3qL7DtnF49g3+/iBoi3KrMdnPTOU=
github.com/google/cel-go v0.4.0/go.mod h1:F0UncVAXNlNjl/4C8hqGdoV6APmuFpetoMJSLIQLBPU=
github.com/google/cel-go v0.4.1 h1:2kqc5arTucvtLJzXVUbmiUh7n2xjizwZijPrpEsagAE=
github.com/google/cel-go v0.4.1/go.mod h1:F0UncVAXNlNjl/4C8hqGdoV6APmuFpetoMJSLIQLBPU=
github.com/google/cel-spec v0.3.0/go.mod h1:MjQm800JAGhOZXI7vatnVpmIaFTR6L8FHcKk+piiKpI=
github.com/google/certificate-transparency-go v1.0.21/go.mod h1:QeJfpSbVSfYc7RgB3gJFj9cbuQMMchQxrWXz8Ruopmg=
github.com/google/certificate-transparency-go v1.1.0/go.mod h1:i+Q7XY+ArBveOUT36jiHGfuSK1fHICIg6sUkRxPAbCs=
@ -758,8 +758,8 @@ github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQ
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
github.com/yuin/goldmark v1.1.22/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.1.25 h1:isv+Q6HQAmmL2Ofcmg8QauBmDPlUUnSoNhEcC940Rds=
github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.1.26 h1:81MfIApzizD8JqKIjnWy2Vxj7GgmQUrJlh/jYWH8yGk=
github.com/yuin/goldmark v1.1.26/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark-highlighting v0.0.0-20200307114337-60d527fdb691 h1:VWSxtAiQNh3zgHJpdpkpVYjTPqRE3P6UZCOPa1nRDio=
github.com/yuin/goldmark-highlighting v0.0.0-20200307114337-60d527fdb691/go.mod h1:YLF3kDffRfUH/bTxOxHhV6lxwIB3Vfj91rEwNMS9MXo=
go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=

18
modules/caddytls/matchers.go
View file

@ -16,9 +16,9 @@ package caddytls
import (
"crypto/tls"
"strings"
"github.com/caddyserver/caddy/v2"
"github.com/caddyserver/certmagic"
)
func init() {
@ -41,23 +41,9 @@ func (MatchServerName) CaddyModule() caddy.ModuleInfo {
// Match matches hello based on SNI.
func (m MatchServerName) Match(hello *tls.ClientHelloInfo) bool {
for _, name := range m {
if hello.ServerName == name {
if certmagic.MatchWildcard(hello.ServerName, name) {
return true
}
// check for wildcard match on this name, but only
// bother if there is even a wildcard character
if !strings.Contains(name, "*") {
continue
}
labels := strings.Split(hello.ServerName, ".")
for i := range labels {
labels[i] = "*"
candidate := strings.Join(labels, ".")
if candidate == name {
return true
}
}
}
return false
}

2
modules/caddytls/tls.go
View file

@ -329,7 +329,7 @@ func (t *TLS) getAutomationPolicyForName(name string) *AutomationPolicy {
return ap // no host filter is an automatic match
}
for _, h := range ap.Subjects {
if h == name {
if certmagic.MatchWildcard(name, h) {
return ap
}
}