func loadConfigsUpToIncludingTLS(filename string, input io.Reader) ([]server.Config, []parse.ServerBlock, int, error) {
var configs []server.Config
// Each server block represents similar hosts/addresses, since they
// were grouped together in the Corefile.
serverBlocks, err := parse.ServerBlocks(filename, input, true)
if err != nil {
return nil, nil, 0, err
}
if len(serverBlocks) == 0 {
newInput := DefaultInput()
serverBlocks, err = parse.ServerBlocks(newInput.Path(), bytes.NewReader(newInput.Body()), true)
if err != nil {
return nil, nil, 0, err
}
}
var lastDirectiveIndex int // we set up directives in two parts; this stores where we left off
// Iterate each server block and make a config for each one,
// executing the directives that were parsed in order up to the tls
// directive; this is because we must activate Let's Encrypt.
for i, sb := range serverBlocks {
onces := makeOnces()
storages := makeStorages()
for j, addr := range sb.Addresses {
config := server.Config{
Host: addr.Host,
Port: addr.Port,
Root: Root,
ConfigFile: filename,
AppName: AppName,
AppVersion: AppVersion,
}
// It is crucial that directives are executed in the proper order.
for k, dir := range directiveOrder {
// Execute directive if it is in the server block
if tokens, ok := sb.Tokens[dir.name]; ok {
// Each setup function gets a controller, from which setup functions
// get access to the config, tokens, and other state information useful
// to set up its own host only.
controller := &setup.Controller{
Config: &config,
Dispenser: parse.NewDispenserTokens(filename, tokens),
OncePerServerBlock: func(f func() error) error {
var err error
onces[dir.name].Do(func() {
err = f()
})
return err
},
ServerBlockIndex: i,
ServerBlockHostIndex: j,
ServerBlockHosts: sb.HostList(),
ServerBlockStorage: storages[dir.name],
}
// execute setup function and append middleware handler, if any
midware, err := dir.setup(controller)
if err != nil {
return nil, nil, lastDirectiveIndex, err
}
if midware != nil {
config.Middleware = append(config.Middleware, midware)
}
storages[dir.name] = controller.ServerBlockStorage // persist for this server block
}
// Stop after TLS setup, since we need to activate Let's Encrypt before continuing;
// it makes some changes to the configs that middlewares might want to know about.
if dir.name == "tls" {
lastDirectiveIndex = k
break
}
}
configs = append(configs, config)
}
}
return configs, serverBlocks, lastDirectiveIndex, nil
}
// loadConfigs reads input (named filename) and parses it, returning the
// server configurations in the order they appeared in the input. As part
// of this, it activates Let's Encrypt for the configs that are produced.
// Thus, the returned configs are already optimally configured for HTTPS.
func loadConfigs(filename string, input io.Reader) ([]server.Config, error) {
configs, serverBlocks, lastDirectiveIndex, err := loadConfigsUpToIncludingTLS(filename, input)
if err != nil {
return nil, err
}
// Now we have all the configs, but they have only been set up to the
// point of tls. We need to activate Let's Encrypt before setting up
// the rest of the middlewares so they have correct information regarding
// TLS configuration, if necessary. (this only appends, so our iterations
// over server blocks below shouldn't be affected)
if !IsRestart() && !Quiet {
fmt.Println("Activating privacy features...")
}
/* TODO(miek): stopped for now
configs, err = https.Activate(configs)
if err != nil {
return nil, err
} else if !IsRestart() && !Quiet {
fmt.Println(" done.")
}
*/
// Finish setting up the rest of the directives, now that TLS is
// optimally configured. These loops are similar to above except
// we don't iterate all the directives from the beginning and we
// don't create new configs.
configIndex := -1
for i, sb := range serverBlocks {
onces := makeOnces()
storages := makeStorages()
for j := range sb.Addresses {
configIndex++
for k := lastDirectiveIndex + 1; k < len(directiveOrder); k++ {
dir := directiveOrder[k]
if tokens, ok := sb.Tokens[dir.name]; ok {
controller := &setup.Controller{
Config: &configs[configIndex],
Dispenser: parse.NewDispenserTokens(filename, tokens),
OncePerServerBlock: func(f func() error) error {
var err error
onces[dir.name].Do(func() {
err = f()
})
return err
},
ServerBlockIndex: i,
ServerBlockHostIndex: j,
ServerBlockHosts: sb.HostList(),
ServerBlockStorage: storages[dir.name],
}
midware, err := dir.setup(controller)
if err != nil {
return nil, err
}
if midware != nil {
configs[configIndex].Middleware = append(configs[configIndex].Middleware, midware)
}
storages[dir.name] = controller.ServerBlockStorage // persist for this server block
}
}
}
}
return configs, nil
}