func singleArg(c *caddy.Controller, desc string) (string, error) {
args := c.RemainingArgs()
if len(args) != 1 {
return "", c.Errf("%s expects exactly one argument", desc)
}
return args[0], nil
}
func parse(m *module, c *caddy.Controller) (err error) {
args := c.RemainingArgs()
if len(args) == 1 && args[0] == "cloudflare" {
addCloudflareIps(m)
if c.NextBlock() {
return c.Err("No realip subblocks allowed if using preset.")
}
} else if len(args) != 0 {
return c.ArgErr()
}
for c.NextBlock() {
var err error
switch c.Val() {
case "header":
m.Header, err = StringArg(c)
case "from":
var cidr *net.IPNet
cidr, err = CidrArg(c)
m.From = append(m.From, cidr)
case "strict":
m.Strict, err = BoolArg(c)
default:
return c.Errf("Unknown realip arg: %s", c.Val())
}
if err != nil {
return err
}
}
return nil
}
// statusParse parses status directive
func statusParse(c *caddy.Controller) ([]httpserver.HandlerConfig, error) {
var rules []httpserver.HandlerConfig
for c.Next() {
hadBlock := false
args := c.RemainingArgs()
switch len(args) {
case 1:
status, err := strconv.Atoi(args[0])
if err != nil {
return rules, c.Errf("Expecting a numeric status code, got '%s'", args[0])
}
for c.NextBlock() {
hadBlock = true
basePath := c.Val()
for _, cfg := range rules {
rule := cfg.(*Rule)
if rule.Base == basePath {
return rules, c.Errf("Duplicate path: '%s'", basePath)
}
}
rule := NewRule(basePath, status)
rules = append(rules, rule)
if c.NextArg() {
return rules, c.ArgErr()
}
}
if !hadBlock {
return rules, c.ArgErr()
}
case 2:
status, err := strconv.Atoi(args[0])
if err != nil {
return rules, c.Errf("Expecting a numeric status code, got '%s'", args[0])
}
basePath := args[1]
for _, cfg := range rules {
rule := cfg.(*Rule)
if rule.Base == basePath {
return rules, c.Errf("Duplicate path: '%s'", basePath)
}
}
rule := NewRule(basePath, status)
rules = append(rules, rule)
default:
return rules, c.ArgErr()
}
}
return rules, nil
}
func BoolArg(c *caddy.Controller) (bool, error) {
args := c.RemainingArgs()
if len(args) > 1 {
return false, c.ArgErr()
}
if len(args) == 0 {
return true, nil
}
switch args[0] {
case "false":
return false, nil
case "true":
return true, nil
default:
return false, c.Errf("Unexpected bool value: %s", args[0])
}
}
func loadParams(c *caddy.Controller, mdc *Config) error {
cfg := httpserver.GetConfig(c.Key)
switch c.Val() {
case "ext":
for _, ext := range c.RemainingArgs() {
mdc.Extensions[ext] = struct{}{}
}
return nil
case "css":
if !c.NextArg() {
return c.ArgErr()
}
mdc.Styles = append(mdc.Styles, c.Val())
return nil
case "js":
if !c.NextArg() {
return c.ArgErr()
}
mdc.Scripts = append(mdc.Scripts, c.Val())
return nil
case "template":
tArgs := c.RemainingArgs()
switch len(tArgs) {
default:
return c.ArgErr()
case 1:
fpath := filepath.ToSlash(filepath.Clean(cfg.Root + string(filepath.Separator) + tArgs[0]))
if err := SetTemplate(mdc.Template, "", fpath); err != nil {
c.Errf("default template parse error: %v", err)
}
return nil
case 2:
fpath := filepath.ToSlash(filepath.Clean(cfg.Root + string(filepath.Separator) + tArgs[1]))
if err := SetTemplate(mdc.Template, tArgs[0], fpath); err != nil {
c.Errf("template parse error: %v", err)
}
return nil
}
case "templatedir":
if !c.NextArg() {
return c.ArgErr()
}
_, err := mdc.Template.ParseGlob(c.Val())
if err != nil {
c.Errf("template load error: %v", err)
}
if c.NextArg() {
return c.ArgErr()
}
return nil
default:
return c.Err("Expected valid markdown configuration property")
}
}
func setupRoot(c *caddy.Controller) error {
config := httpserver.GetConfig(c)
for c.Next() {
if !c.NextArg() {
return c.ArgErr()
}
config.Root = c.Val()
}
// Check if root path exists
_, err := os.Stat(config.Root)
if err != nil {
if os.IsNotExist(err) {
// Allow this, because the folder might appear later.
// But make sure the user knows!
log.Printf("[WARNING] Root path does not exist: %s", config.Root)
} else {
return c.Errf("Unable to access root path '%s': %v", config.Root, err)
}
}
return nil
}
func basicAuthParse(c *caddy.Controller) ([]Rule, error) {
var rules []Rule
cfg := httpserver.GetConfig(c)
var err error
for c.Next() {
var rule Rule
args := c.RemainingArgs()
switch len(args) {
case 2:
rule.Username = args[0]
if rule.Password, err = passwordMatcher(rule.Username, args[1], cfg.Root); err != nil {
return rules, c.Errf("Get password matcher from %s: %v", c.Val(), err)
}
for c.NextBlock() {
rule.Resources = append(rule.Resources, c.Val())
if c.NextArg() {
return rules, c.Errf("Expecting only one resource per line (extra '%s')", c.Val())
}
}
case 3:
rule.Resources = append(rule.Resources, args[0])
rule.Username = args[1]
if rule.Password, err = passwordMatcher(rule.Username, args[2], cfg.Root); err != nil {
return rules, c.Errf("Get password matcher from %s: %v", c.Val(), err)
}
default:
return rules, c.ArgErr()
}
rules = append(rules, rule)
}
return rules, nil
}
func errorsParse(c *caddy.Controller) (*ErrorHandler, error) {
// Very important that we make a pointer because the startup
// function that opens the log file must have access to the
// same instance of the handler, not a copy.
handler := &ErrorHandler{ErrorPages: make(map[int]string)}
cfg := httpserver.GetConfig(c)
optionalBlock := func() (bool, error) {
var hadBlock bool
for c.NextBlock() {
hadBlock = true
what := c.Val()
if !c.NextArg() {
return hadBlock, c.ArgErr()
}
where := c.Val()
if what == "log" {
if where == "visible" {
handler.Debug = true
} else {
handler.LogFile = where
if c.NextArg() {
if c.Val() == "{" {
c.IncrNest()
logRoller, err := httpserver.ParseRoller(c)
if err != nil {
return hadBlock, err
}
handler.LogRoller = logRoller
}
}
}
} else {
// Error page; ensure it exists
where = filepath.Join(cfg.Root, where)
f, err := os.Open(where)
if err != nil {
log.Printf("[WARNING] Unable to open error page '%s': %v", where, err)
}
f.Close()
if what == "*" {
if handler.GenericErrorPage != "" {
return hadBlock, c.Errf("Duplicate status code entry: %s", what)
}
handler.GenericErrorPage = where
} else {
whatInt, err := strconv.Atoi(what)
if err != nil {
return hadBlock, c.Err("Expecting a numeric status code or '*', got '" + what + "'")
}
if _, exists := handler.ErrorPages[whatInt]; exists {
return hadBlock, c.Errf("Duplicate status code entry: %s", what)
}
handler.ErrorPages[whatInt] = where
}
}
}
return hadBlock, nil
}
for c.Next() {
// weird hack to avoid having the handler values overwritten.
if c.Val() == "}" {
continue
}
// Configuration may be in a block
hadBlock, err := optionalBlock()
if err != nil {
return handler, err
}
// Otherwise, the only argument would be an error log file name or 'visible'
if !hadBlock {
if c.NextArg() {
if c.Val() == "visible" {
handler.Debug = true
} else {
handler.LogFile = c.Val()
}
}
}
}
return handler, nil
}
// setupTLS sets up the TLS configuration and installs certificates that
// are specified by the user in the config file. All the automatic HTTPS
// stuff comes later outside of this function.
func setupTLS(c *caddy.Controller) error {
configGetter, ok := configGetters[c.ServerType()]
if !ok {
return fmt.Errorf("no caddytls.ConfigGetter for %s server type; must call RegisterConfigGetter", c.ServerType())
}
config := configGetter(c)
if config == nil {
return fmt.Errorf("no caddytls.Config to set up for %s", c.Key)
}
config.Enabled = true
for c.Next() {
var certificateFile, keyFile, loadDir, maxCerts string
args := c.RemainingArgs()
switch len(args) {
case 1:
// even if the email is one of the special values below,
// it is still necessary for future analysis that we store
// that value in the ACMEEmail field.
config.ACMEEmail = args[0]
// user can force-disable managed TLS this way
if args[0] == "off" {
config.Enabled = false
return nil
}
// user might want a temporary, in-memory, self-signed cert
if args[0] == "self_signed" {
config.SelfSigned = true
}
case 2:
certificateFile = args[0]
keyFile = args[1]
config.Manual = true
}
// Optional block with extra parameters
var hadBlock bool
for c.NextBlock() {
hadBlock = true
switch c.Val() {
case "key_type":
arg := c.RemainingArgs()
value, ok := supportedKeyTypes[strings.ToUpper(arg[0])]
if !ok {
return c.Errf("Wrong key type name or key type not supported: '%s'", c.Val())
}
config.KeyType = value
case "protocols":
args := c.RemainingArgs()
if len(args) == 1 {
value, ok := supportedProtocols[strings.ToLower(args[0])]
if !ok {
return c.Errf("Wrong protocol name or protocol not supported: '%s'", args[0])
}
config.ProtocolMinVersion, config.ProtocolMaxVersion = value, value
} else {
value, ok := supportedProtocols[strings.ToLower(args[0])]
if !ok {
return c.Errf("Wrong protocol name or protocol not supported: '%s'", args[0])
}
config.ProtocolMinVersion = value
value, ok = supportedProtocols[strings.ToLower(args[1])]
if !ok {
return c.Errf("Wrong protocol name or protocol not supported: '%s'", args[1])
}
config.ProtocolMaxVersion = value
if config.ProtocolMinVersion > config.ProtocolMaxVersion {
return c.Errf("Minimum protocol version cannot be higher than maximum (reverse the order)")
}
}
case "ciphers":
for c.NextArg() {
value, ok := supportedCiphersMap[strings.ToUpper(c.Val())]
if !ok {
return c.Errf("Wrong cipher name or cipher not supported: '%s'", c.Val())
}
config.Ciphers = append(config.Ciphers, value)
}
case "clients":
clientCertList := c.RemainingArgs()
if len(clientCertList) == 0 {
return c.ArgErr()
}
listStart, mustProvideCA := 1, true
switch clientCertList[0] {
case "request":
config.ClientAuth = tls.RequestClientCert
mustProvideCA = false
case "require":
config.ClientAuth = tls.RequireAnyClientCert
mustProvideCA = false
case "verify_if_given":
config.ClientAuth = tls.VerifyClientCertIfGiven
default:
config.ClientAuth = tls.RequireAndVerifyClientCert
listStart = 0
}
if mustProvideCA && len(clientCertList) <= listStart {
return c.ArgErr()
}
config.ClientCerts = clientCertList[listStart:]
case "load":
c.Args(&loadDir)
config.Manual = true
case "max_certs":
c.Args(&maxCerts)
config.OnDemand = true
case "dns":
args := c.RemainingArgs()
if len(args) != 1 {
return c.ArgErr()
}
dnsProvName := args[0]
if _, ok := dnsProviders[dnsProvName]; !ok {
return c.Errf("Unsupported DNS provider '%s'", args[0])
}
config.DNSProvider = args[0]
case "storage":
args := c.RemainingArgs()
if len(args) != 1 {
return c.ArgErr()
}
storageProvName := args[0]
if _, ok := storageProviders[storageProvName]; !ok {
return c.Errf("Unsupported Storage provider '%s'", args[0])
}
config.StorageProvider = args[0]
default:
return c.Errf("Unknown keyword '%s'", c.Val())
}
}
// tls requires at least one argument if a block is not opened
if len(args) == 0 && !hadBlock {
return c.ArgErr()
}
// set certificate limit if on-demand TLS is enabled
if maxCerts != "" {
maxCertsNum, err := strconv.Atoi(maxCerts)
if err != nil || maxCertsNum < 1 {
return c.Err("max_certs must be a positive integer")
}
config.OnDemandState.MaxObtain = int32(maxCertsNum)
}
// don't try to load certificates unless we're supposed to
if !config.Enabled || !config.Manual {
continue
}
// load a single certificate and key, if specified
if certificateFile != "" && keyFile != "" {
err := cacheUnmanagedCertificatePEMFile(certificateFile, keyFile)
if err != nil {
return c.Errf("Unable to load certificate and key files for '%s': %v", c.Key, err)
}
log.Printf("[INFO] Successfully loaded TLS assets from %s and %s", certificateFile, keyFile)
}
// load a directory of certificates, if specified
if loadDir != "" {
err := loadCertsInDir(c, loadDir)
if err != nil {
return err
}
}
}
SetDefaultTLSParams(config)
// generate self-signed cert if needed
if config.SelfSigned {
err := makeSelfSignedCert(config)
if err != nil {
return fmt.Errorf("self-signed: %v", err)
}
}
return nil
}
// loadCertsInDir loads all the certificates/keys in dir, as long as
// the file ends with .pem. This method of loading certificates is
// modeled after haproxy, which expects the certificate and key to
// be bundled into the same file:
// https://cbonte.github.io/haproxy-dconv/configuration-1.5.html#5.1-crt
//
// This function may write to the log as it walks the directory tree.
func loadCertsInDir(c *caddy.Controller, dir string) error {
return filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
log.Printf("[WARNING] Unable to traverse into %s; skipping", path)
return nil
}
if info.IsDir() {
return nil
}
if strings.HasSuffix(strings.ToLower(info.Name()), ".pem") {
certBuilder, keyBuilder := new(bytes.Buffer), new(bytes.Buffer)
var foundKey bool // use only the first key in the file
bundle, err := ioutil.ReadFile(path)
if err != nil {
return err
}
for {
// Decode next block so we can see what type it is
var derBlock *pem.Block
derBlock, bundle = pem.Decode(bundle)
if derBlock == nil {
break
}
if derBlock.Type == "CERTIFICATE" {
// Re-encode certificate as PEM, appending to certificate chain
pem.Encode(certBuilder, derBlock)
} else if derBlock.Type == "EC PARAMETERS" {
// EC keys generated from openssl can be composed of two blocks:
// parameters and key (parameter block should come first)
if !foundKey {
// Encode parameters
pem.Encode(keyBuilder, derBlock)
// Key must immediately follow
derBlock, bundle = pem.Decode(bundle)
if derBlock == nil || derBlock.Type != "EC PRIVATE KEY" {
return c.Errf("%s: expected elliptic private key to immediately follow EC parameters", path)
}
pem.Encode(keyBuilder, derBlock)
foundKey = true
}
} else if derBlock.Type == "PRIVATE KEY" || strings.HasSuffix(derBlock.Type, " PRIVATE KEY") {
// RSA key
if !foundKey {
pem.Encode(keyBuilder, derBlock)
foundKey = true
}
} else {
return c.Errf("%s: unrecognized PEM block type: %s", path, derBlock.Type)
}
}
certPEMBytes, keyPEMBytes := certBuilder.Bytes(), keyBuilder.Bytes()
if len(certPEMBytes) == 0 {
return c.Errf("%s: failed to parse PEM data", path)
}
if len(keyPEMBytes) == 0 {
return c.Errf("%s: no private key block found", path)
}
err = cacheUnmanagedCertificatePEMBytes(certPEMBytes, keyPEMBytes)
if err != nil {
return c.Errf("%s: failed to load cert and key for '%s': %v", path, c.Key, err)
}
log.Printf("[INFO] Successfully loaded TLS assets from %s", path)
}
return nil
})
}
func redirParse(c *caddy.Controller) ([]Rule, error) {
var redirects []Rule
cfg := httpserver.GetConfig(c.Key)
// setRedirCode sets the redirect code for rule if it can, or returns an error
setRedirCode := func(code string, rule *Rule) error {
if code == "meta" {
rule.Meta = true
} else if codeNumber, ok := httpRedirs[code]; ok {
rule.Code = codeNumber
} else {
return c.Errf("Invalid redirect code '%v'", code)
}
return nil
}
// checkAndSaveRule checks the rule for validity (except the redir code)
// and saves it if it's valid, or returns an error.
checkAndSaveRule := func(rule Rule) error {
if rule.FromPath == rule.To {
return c.Err("'from' and 'to' values of redirect rule cannot be the same")
}
for _, otherRule := range redirects {
if otherRule.FromPath == rule.FromPath {
return c.Errf("rule with duplicate 'from' value: %s -> %s", otherRule.FromPath, otherRule.To)
}
}
redirects = append(redirects, rule)
return nil
}
for c.Next() {
args := c.RemainingArgs()
var hadOptionalBlock bool
for c.NextBlock() {
hadOptionalBlock = true
var rule Rule
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
}
// Set initial redirect code
// BUG: If the code is specified for a whole block and that code is invalid,
// the line number will appear on the first line inside the block, even if that
// line overwrites the block-level code with a valid redirect code. The program
// still functions correctly, but the line number in the error reporting is
// misleading to the user.
if len(args) == 1 {
err := setRedirCode(args[0], &rule)
if err != nil {
return redirects, err
}
} else {
rule.Code = http.StatusMovedPermanently // default code
}
// RemainingArgs only gets the values after the current token, but in our
// case we want to include the current token to get an accurate count.
insideArgs := append([]string{c.Val()}, c.RemainingArgs()...)
switch len(insideArgs) {
case 1:
// To specified (catch-all redirect)
// Not sure why user is doing this in a table, as it causes all other redirects to be ignored.
// As such, this feature remains undocumented.
rule.FromPath = "/"
rule.To = insideArgs[0]
case 2:
// From and To specified
rule.FromPath = insideArgs[0]
rule.To = insideArgs[1]
case 3:
// From, To, and Code specified
rule.FromPath = insideArgs[0]
rule.To = insideArgs[1]
err := setRedirCode(insideArgs[2], &rule)
if err != nil {
return redirects, err
}
default:
return redirects, c.ArgErr()
}
err := checkAndSaveRule(rule)
if err != nil {
return redirects, err
}
}
if !hadOptionalBlock {
var rule Rule
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
}
rule.Code = http.StatusMovedPermanently // default
switch len(args) {
case 1:
// To specified (catch-all redirect)
rule.FromPath = "/"
rule.To = args[0]
case 2:
// To and Code specified (catch-all redirect)
rule.FromPath = "/"
rule.To = args[0]
err := setRedirCode(args[1], &rule)
if err != nil {
return redirects, err
}
case 3:
// From, To, and Code specified
rule.FromPath = args[0]
rule.To = args[1]
err := setRedirCode(args[2], &rule)
if err != nil {
return redirects, err
}
default:
return redirects, c.ArgErr()
}
err := checkAndSaveRule(rule)
if err != nil {
return redirects, err
}
}
}
return redirects, nil
}
func parseRules(c *caddy.Controller) ([]*corsRule, error) {
rules := []*corsRule{}
for c.Next() {
rule := &corsRule{Path: "/", Conf: cors.Default()}
args := c.RemainingArgs()
anyOrigins := false
if len(args) > 0 {
rule.Path = args[0]
}
for i := 1; i < len(args); i++ {
if !anyOrigins {
rule.Conf.AllowedOrigins = nil
}
rule.Conf.AllowedOrigins = append(rule.Conf.AllowedOrigins, strings.Split(args[i], ",")...)
anyOrigins = true
}
for c.NextBlock() {
switch c.Val() {
case "origin":
if !anyOrigins {
rule.Conf.AllowedOrigins = nil
}
args := c.RemainingArgs()
for _, domain := range args {
rule.Conf.AllowedOrigins = append(rule.Conf.AllowedOrigins, strings.Split(domain, ",")...)
}
anyOrigins = true
case "methods":
if arg, err := singleArg(c, "methods"); err != nil {
return nil, err
} else {
rule.Conf.AllowedMethods = arg
}
case "allow_credentials":
if arg, err := singleArg(c, "allow_credentials"); err != nil {
return nil, err
} else {
var b bool
if arg == "true" {
b = true
} else if arg != "false" {
return nil, c.Errf("allow_credentials must be true or false.")
}
rule.Conf.AllowCredentials = &b
}
case "max_age":
if arg, err := singleArg(c, "max_age"); err != nil {
return nil, err
} else {
i, err := strconv.Atoi(arg)
if err != nil {
return nil, c.Err("max_age must be valid int")
}
rule.Conf.MaxAge = i
}
case "allowed_headers":
if arg, err := singleArg(c, "allowed_headers"); err != nil {
return nil, err
} else {
rule.Conf.AllowedHeaders = arg
}
case "exposed_headers":
if arg, err := singleArg(c, "exposed_headers"); err != nil {
return nil, err
} else {
rule.Conf.ExposedHeaders = arg
}
default:
return nil, c.Errf("Unknown cors config item: %s", c.Val())
}
}
rules = append(rules, rule)
}
return rules, nil
}
func parse(c *caddy.Controller) (Git, error) {
var git Git
config := httpserver.GetConfig(c)
for c.Next() {
repo := &Repo{Branch: "master", Interval: DefaultInterval, Path: config.Root}
args := c.RemainingArgs()
clonePath := func(s string) string {
if filepath.IsAbs(s) {
return filepath.Clean(s)
}
return filepath.Join(config.Root, s)
}
switch len(args) {
case 2:
repo.Path = clonePath(args[1])
fallthrough
case 1:
u, err := validateURL(args[0])
if err != nil {
return nil, err
}
repo.URL = u
}
for c.NextBlock() {
switch c.Val() {
case "repo":
if !c.NextArg() {
return nil, c.ArgErr()
}
u, err := validateURL(c.Val())
if err != nil {
return nil, err
}
repo.URL = u
case "path":
if !c.NextArg() {
return nil, c.ArgErr()
}
repo.Path = clonePath(c.Val())
case "branch":
if !c.NextArg() {
return nil, c.ArgErr()
}
repo.Branch = c.Val()
case "key":
if !c.NextArg() {
return nil, c.ArgErr()
}
repo.KeyPath = c.Val()
case "interval":
if !c.NextArg() {
return nil, c.ArgErr()
}
t, _ := strconv.Atoi(c.Val())
if t > 0 {
repo.Interval = time.Duration(t) * time.Second
}
case "args":
repo.Args = c.RemainingArgs()
case "hook":
if !c.NextArg() {
return nil, c.ArgErr()
}
repo.Hook.URL = c.Val()
// optional secret for validation
if c.NextArg() {
repo.Hook.Secret = c.Val()
}
case "hook_type":
if !c.NextArg() {
return nil, c.ArgErr()
}
t := c.Val()
if _, ok := handlers[t]; !ok {
return nil, c.Errf("invalid hook type %v", t)
}
repo.Hook.Type = t
case "then":
if !c.NextArg() {
return nil, c.ArgErr()
}
command := c.Val()
args := c.RemainingArgs()
repo.Then = append(repo.Then, NewThen(command, args...))
case "then_long":
if !c.NextArg() {
return nil, c.ArgErr()
}
command := c.Val()
args := c.RemainingArgs()
repo.Then = append(repo.Then, NewLongThen(command, args...))
default:
return nil, c.ArgErr()
}
}
// if repo is not specified, return error
if repo.URL == "" {
return nil, c.ArgErr()
}
// if private key is not specified, convert repository URL to https
// to avoid ssh authentication
// else validate git URL
// Note: private key support not yet available on Windows
var err error
if repo.KeyPath == "" {
repo.URL, repo.Host, err = sanitizeHTTP(repo.URL)
} else {
repo.URL, repo.Host, err = sanitizeSSH(repo.URL)
// TODO add Windows support for private repos
if runtime.GOOS == "windows" {
return nil, fmt.Errorf("private repository not yet supported on Windows")
}
}
if err != nil {
return nil, err
}
// validate git requirements
if err = Init(); err != nil {
return nil, err
}
// prepare repo for use
if err = repo.Prepare(); err != nil {
return nil, err
}
git = append(git, repo)
}
return git, nil
}
func redirParse(c *caddy.Controller) ([]Rule, error) {
var redirects []Rule
cfg := httpserver.GetConfig(c)
initRule := func(rule *Rule, defaultCode string, args []string) error {
if cfg.TLS.Enabled {
rule.FromScheme = "https"
} else {
rule.FromScheme = "http"
}
var (
from = "/"
to string
code = defaultCode
)
switch len(args) {
case 1:
// To specified (catch-all redirect)
// Not sure why user is doing this in a table, as it causes all other redirects to be ignored.
// As such, this feature remains undocumented.
to = args[0]
case 2:
// From and To specified
from = args[0]
to = args[1]
case 3:
// From, To, and Code specified
from = args[0]
to = args[1]
code = args[2]
default:
return c.ArgErr()
}
rule.FromPath = from
rule.To = to
if code == "meta" {
rule.Meta = true
code = defaultCode
}
if codeNumber, ok := httpRedirs[code]; ok {
rule.Code = codeNumber
} else {
return c.Errf("Invalid redirect code '%v'", code)
}
return nil
}
// checkAndSaveRule checks the rule for validity (except the redir code)
// and saves it if it's valid, or returns an error.
checkAndSaveRule := func(rule Rule) error {
if rule.FromPath == rule.To {
return c.Err("'from' and 'to' values of redirect rule cannot be the same")
}
for _, otherRule := range redirects {
if otherRule.FromPath == rule.FromPath {
return c.Errf("rule with duplicate 'from' value: %s -> %s", otherRule.FromPath, otherRule.To)
}
}
redirects = append(redirects, rule)
return nil
}
const initDefaultCode = "301"
for c.Next() {
args := c.RemainingArgs()
matcher, err := httpserver.SetupIfMatcher(c)
if err != nil {
return nil, err
}
var hadOptionalBlock bool
for c.NextBlock() {
if httpserver.IfMatcherKeyword(c) {
continue
}
hadOptionalBlock = true
rule := Rule{
RequestMatcher: matcher,
}
defaultCode := initDefaultCode
// Set initial redirect code
if len(args) == 1 {
defaultCode = args[0]
}
// RemainingArgs only gets the values after the current token, but in our
// case we want to include the current token to get an accurate count.
insideArgs := append([]string{c.Val()}, c.RemainingArgs()...)
err := initRule(&rule, defaultCode, insideArgs)
if err != nil {
return redirects, err
}
err = checkAndSaveRule(rule)
if err != nil {
return redirects, err
}
}
if !hadOptionalBlock {
rule := Rule{
RequestMatcher: matcher,
}
err := initRule(&rule, initDefaultCode, args)
if err != nil {
return redirects, err
}
err = checkAndSaveRule(rule)
if err != nil {
return redirects, err
}
}
}
return redirects, nil
}
func fastcgiParse(c *caddy.Controller) ([]Rule, error) {
var rules []Rule
for c.Next() {
var rule Rule
args := c.RemainingArgs()
if len(args) < 2 || len(args) > 3 {
return rules, c.ArgErr()
}
rule.Path = args[0]
upstreams := []string{args[1]}
if len(args) == 3 {
if err := fastcgiPreset(args[2], &rule); err != nil {
return rules, err
}
}
var dialers []dialer
var poolSize = -1
for c.NextBlock() {
switch c.Val() {
case "ext":
if !c.NextArg() {
return rules, c.ArgErr()
}
rule.Ext = c.Val()
case "split":
if !c.NextArg() {
return rules, c.ArgErr()
}
rule.SplitPath = c.Val()
case "index":
args := c.RemainingArgs()
if len(args) == 0 {
return rules, c.ArgErr()
}
rule.IndexFiles = args
case "upstream":
args := c.RemainingArgs()
if len(args) != 1 {
return rules, c.ArgErr()
}
upstreams = append(upstreams, args[0])
case "env":
envArgs := c.RemainingArgs()
if len(envArgs) < 2 {
return rules, c.ArgErr()
}
rule.EnvVars = append(rule.EnvVars, [2]string{envArgs[0], envArgs[1]})
case "except":
ignoredPaths := c.RemainingArgs()
if len(ignoredPaths) == 0 {
return rules, c.ArgErr()
}
rule.IgnoredSubPaths = ignoredPaths
case "pool":
if !c.NextArg() {
return rules, c.ArgErr()
}
pool, err := strconv.Atoi(c.Val())
if err != nil {
return rules, err
}
if pool >= 0 {
poolSize = pool
} else {
return rules, c.Errf("positive integer expected, found %d", pool)
}
}
}
for _, rawAddress := range upstreams {
network, address := parseAddress(rawAddress)
if poolSize >= 0 {
dialers = append(dialers, &persistentDialer{size: poolSize, network: network, address: address})
} else {
dialers = append(dialers, basicDialer{network: network, address: address})
}
}
rule.dialer = &loadBalancingDialer{dialers: dialers}
rule.Address = strings.Join(upstreams, ",")
rules = append(rules, rule)
}
return rules, nil
}
func fastcgiParse(c *caddy.Controller) ([]Rule, error) {
var rules []Rule
for c.Next() {
var rule Rule
args := c.RemainingArgs()
switch len(args) {
case 0:
return rules, c.ArgErr()
case 1:
rule.Path = "/"
rule.Address = args[0]
case 2:
rule.Path = args[0]
rule.Address = args[1]
case 3:
rule.Path = args[0]
rule.Address = args[1]
err := fastcgiPreset(args[2], &rule)
if err != nil {
return rules, c.Err("Invalid fastcgi rule preset '" + args[2] + "'")
}
}
network, address := parseAddress(rule.Address)
rule.dialer = basicDialer{network: network, address: address}
for c.NextBlock() {
switch c.Val() {
case "ext":
if !c.NextArg() {
return rules, c.ArgErr()
}
rule.Ext = c.Val()
case "split":
if !c.NextArg() {
return rules, c.ArgErr()
}
rule.SplitPath = c.Val()
case "index":
args := c.RemainingArgs()
if len(args) == 0 {
return rules, c.ArgErr()
}
rule.IndexFiles = args
case "env":
envArgs := c.RemainingArgs()
if len(envArgs) < 2 {
return rules, c.ArgErr()
}
rule.EnvVars = append(rule.EnvVars, [2]string{envArgs[0], envArgs[1]})
case "except":
ignoredPaths := c.RemainingArgs()
if len(ignoredPaths) == 0 {
return rules, c.ArgErr()
}
rule.IgnoredSubPaths = ignoredPaths
case "pool":
if !c.NextArg() {
return rules, c.ArgErr()
}
pool, err := strconv.Atoi(c.Val())
if err != nil {
return rules, err
}
if pool >= 0 {
rule.dialer = &persistentDialer{size: pool, network: network, address: address}
} else {
return rules, c.Errf("positive integer expected, found %d", pool)
}
}
}
rules = append(rules, rule)
}
return rules, nil
}