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more work on websocket support

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This commit is contained in:
Shivaram Lingamneni 2020-05-04 22:29:10 -04:00
parent 25813f6d3a
commit 3dc5c8de78
17 changed files with 830 additions and 444 deletions
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42
irc/config.go
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@ -56,16 +56,6 @@ type listenerConfigBlock struct {
WebSocket bool
}
// listenerConfig is the config governing a particular listener (bound address),
// in particular whether it has TLS or Tor (or both) enabled.
type listenerConfig struct {
TLSConfig *tls.Config
Tor bool
STSOnly bool
ProxyBeforeTLS bool
WebSocket bool
}
type PersistentStatus uint
const (
@ -488,8 +478,12 @@ type Config struct {
Listeners map[string]listenerConfigBlock
UnixBindMode os.FileMode `yaml:"unix-bind-mode"`
TorListeners TorListenersConfig `yaml:"tor-listeners"`
Websockets struct {
AllowedOrigins []string `yaml:"allowed-origins"`
allowedOriginRegexps []*regexp.Regexp
}
// they get parsed into this internal representation:
trueListeners map[string]listenerConfig
trueListeners map[string]utils.ListenerConfig
STS STSConfig
LookupHostnames *bool `yaml:"lookup-hostnames"`
lookupHostnames bool
@ -767,9 +761,10 @@ func (conf *Config) prepareListeners() (err error) {
return fmt.Errorf("No listeners were configured")
}
conf.Server.trueListeners = make(map[string]listenerConfig)
conf.Server.trueListeners = make(map[string]utils.ListenerConfig)
for addr, block := range conf.Server.Listeners {
var lconf listenerConfig
var lconf utils.ListenerConfig
lconf.ProxyDeadline = time.Minute
lconf.Tor = block.Tor
lconf.STSOnly = block.STSOnly
if lconf.STSOnly && !conf.Server.STS.Enabled {
@ -781,7 +776,7 @@ func (conf *Config) prepareListeners() (err error) {
return err
}
lconf.TLSConfig = tlsConfig
lconf.ProxyBeforeTLS = block.TLS.Proxy
lconf.RequireProxy = block.TLS.Proxy
}
lconf.WebSocket = block.WebSocket
conf.Server.trueListeners[addr] = lconf
@ -849,6 +844,14 @@ func LoadConfig(filename string) (config *Config, err error) {
return nil, fmt.Errorf("failed to prepare listeners: %v", err)
}
for _, glob := range config.Server.Websockets.AllowedOrigins {
globre, err := utils.CompileGlob(glob)
if err != nil {
return nil, fmt.Errorf("invalid websocket allowed-origin expression: %s", glob)
}
config.Server.Websockets.allowedOriginRegexps = append(config.Server.Websockets.allowedOriginRegexps, globre)
}
if config.Server.STS.Enabled {
if config.Server.STS.Port < 0 || config.Server.STS.Port > 65535 {
return nil, fmt.Errorf("STS port is incorrect, should be 0 if disabled: %d", config.Server.STS.Port)
@ -1206,6 +1209,11 @@ func (config *Config) Diff(oldConfig *Config) (addedCaps, removedCaps *caps.Set)
}
func compileGuestRegexp(guestFormat string, casemapping Casemapping) (standard, folded *regexp.Regexp, err error) {
standard, err = utils.CompileGlob(guestFormat)
if err != nil {
return
}
starIndex := strings.IndexByte(guestFormat, '*')
if starIndex == -1 {
return nil, nil, errors.New("guest format must contain exactly one *")
@ -1215,10 +1223,6 @@ func compileGuestRegexp(guestFormat string, casemapping Casemapping) (standard,
if strings.IndexByte(final, '*') != -1 {
return nil, nil, errors.New("guest format must contain exactly one *")
}
standard, err = regexp.Compile(fmt.Sprintf("^%s(.*)%s$", initial, final))
if err != nil {
return
}
initialFolded, err := casefoldWithSetting(initial, casemapping)
if err != nil {
return
@ -1227,6 +1231,6 @@ func compileGuestRegexp(guestFormat string, casemapping Casemapping) (standard,
if err != nil {
return
}
folded, err = regexp.Compile(fmt.Sprintf("^%s(.*)%s$", initialFolded, finalFolded))
folded, err = utils.CompileGlob(fmt.Sprintf("%s*%s", initialFolded, finalFolded))
return
}