Exemplo n.º 1
0
// ParseRoller parses roller contents out of c.
func ParseRoller(c *caddy.Controller) (*LogRoller, error) {
	var size, age, keep int
	// This is kind of a hack to support nested blocks:
	// As we are already in a block: either log or errors,
	// c.nesting > 0 but, as soon as c meets a }, it thinks
	// the block is over and return false for c.NextBlock.
	for c.NextBlock() {
		what := c.Val()
		if !c.NextArg() {
			return nil, c.ArgErr()
		}
		value := c.Val()
		var err error
		switch what {
		case "size":
			size, err = strconv.Atoi(value)
		case "age":
			age, err = strconv.Atoi(value)
		case "keep":
			keep, err = strconv.Atoi(value)
		}
		if err != nil {
			return nil, err
		}
	}
	return &LogRoller{
		MaxSize:    size,
		MaxAge:     age,
		MaxBackups: keep,
		LocalTime:  true,
	}, nil
}
Exemplo n.º 2
0
// Assert only one arg and return it
func StringArg(c *caddy.Controller) (string, error) {
	args := c.RemainingArgs()
	if len(args) != 1 {
		return "", c.ArgErr()
	}
	return args[0], nil
}
Exemplo n.º 3
0
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
}
Exemplo n.º 4
0
// setup configures a new Git service routine.
func setup(c *caddy.Controller) error {
	git, err := parse(c)
	if err != nil {
		return err
	}

	// repos configured with webhooks
	var hookRepos []*Repo

	// functions to execute at startup
	var startupFuncs []func() error

	// loop through all repos and and start monitoring
	for i := range git {
		repo := git.Repo(i)

		// If a HookUrl is set, we switch to event based pulling.
		// Install the url handler
		if repo.Hook.URL != "" {

			hookRepos = append(hookRepos, repo)

			startupFuncs = append(startupFuncs, func() error {
				return repo.Pull()
			})

		} else {
			startupFuncs = append(startupFuncs, func() error {

				// Start service routine in background
				Start(repo)

				// Do a pull right away to return error
				return repo.Pull()
			})
		}
	}

	// ensure the functions are executed once per server block
	// for cases like server1.com, server2.com { ... }
	c.OncePerServerBlock(func() error {
		for i := range startupFuncs {
			c.OnStartup(startupFuncs[i])
		}
		return nil
	})

	// if there are repo(s) with webhook
	// return handler
	if len(hookRepos) > 0 {
		webhook := &WebHook{Repos: hookRepos}
		httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
			webhook.Next = next
			return webhook
		})
	}

	return nil
}
Exemplo n.º 5
0
// setup sets up the logging middleware.
func setup(c *caddy.Controller) error {
	rules, err := logParse(c)
	if err != nil {
		return err
	}

	// Open the log files for writing when the server starts
	c.OnStartup(func() error {
		for i := 0; i < len(rules); i++ {
			var err error
			var writer io.Writer

			if rules[i].OutputFile == "stdout" {
				writer = os.Stdout
			} else if rules[i].OutputFile == "stderr" {
				writer = os.Stderr
			} else if rules[i].OutputFile == "syslog" {
				writer, err = gsyslog.NewLogger(gsyslog.LOG_INFO, "LOCAL0", "caddy")
				if err != nil {
					return err
				}
			} else {
				var file *os.File
				file, err = os.OpenFile(rules[i].OutputFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
				if err != nil {
					return err
				}
				if rules[i].Roller != nil {
					file.Close()
					rules[i].Roller.Filename = rules[i].OutputFile
					writer = rules[i].Roller.GetLogWriter()
				} else {
					rules[i].file = file
					writer = file
				}
			}

			rules[i].Log = log.New(writer, "", 0)
		}

		return nil
	})

	// When server stops, close any open log files
	c.OnShutdown(func() error {
		for _, rule := range rules {
			if rule.file != nil {
				rule.file.Close()
			}
		}
		return nil
	})

	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
		return Logger{Next: next, Rules: rules, ErrorFunc: httpserver.DefaultErrorFunc}
	})

	return nil
}
Exemplo n.º 6
0
// setup configures a new errors middleware instance.
func setup(c *caddy.Controller) error {
	handler, err := errorsParse(c)
	if err != nil {
		return err
	}

	// Open the log file for writing when the server starts
	c.OnStartup(func() error {
		var err error
		var writer io.Writer

		switch handler.LogFile {
		case "visible":
			handler.Debug = true
		case "stdout":
			writer = os.Stdout
		case "stderr":
			writer = os.Stderr
		case "syslog":
			writer, err = gsyslog.NewLogger(gsyslog.LOG_ERR, "LOCAL0", "caddy")
			if err != nil {
				return err
			}
		default:
			if handler.LogFile == "" {
				writer = os.Stderr // default
				break
			}

			var file *os.File
			file, err = os.OpenFile(handler.LogFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
			if err != nil {
				return err
			}
			if handler.LogRoller != nil {
				file.Close()

				handler.LogRoller.Filename = handler.LogFile

				writer = handler.LogRoller.GetLogWriter()
			} else {
				writer = file
			}
		}

		handler.Log = log.New(writer, "", 0)
		return nil
	})

	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
		handler.Next = next
		return handler
	})

	return nil
}
Exemplo n.º 7
0
// GetConfig gets the SiteConfig that corresponds to c.
// If none exist (should only happen in tests), then a
// new, empty one will be created.
func GetConfig(c *caddy.Controller) *SiteConfig {
	ctx := c.Context().(*httpContext)
	if cfg, ok := ctx.keysToSiteConfigs[c.Key]; ok {
		return cfg
	}
	// we should only get here during tests because directive
	// actions typically skip the server blocks where we make
	// the configs
	ctx.saveConfig(c.Key, &SiteConfig{Root: Root, TLS: new(caddytls.Config)})
	return GetConfig(c)
}
Exemplo n.º 8
0
func browseParse(c *caddy.Controller) ([]Config, error) {
	var configs []Config

	cfg := httpserver.GetConfig(c)

	appendCfg := func(bc Config) error {
		for _, c := range configs {
			if c.PathScope == bc.PathScope {
				return fmt.Errorf("duplicate browsing config for %s", c.PathScope)
			}
		}
		configs = append(configs, bc)
		return nil
	}

	for c.Next() {
		var bc Config

		// First argument is directory to allow browsing; default is site root
		if c.NextArg() {
			bc.PathScope = c.Val()
		} else {
			bc.PathScope = "/"
		}
		bc.Root = http.Dir(cfg.Root)

		// Second argument would be the template file to use
		var tplText string
		if c.NextArg() {
			tplBytes, err := ioutil.ReadFile(c.Val())
			if err != nil {
				return configs, err
			}
			tplText = string(tplBytes)
		} else {
			tplText = defaultTemplate
		}

		// Build the template
		tpl, err := template.New("listing").Parse(tplText)
		if err != nil {
			return configs, err
		}
		bc.Template = tpl

		// Save configuration
		err = appendCfg(bc)
		if err != nil {
			return configs, err
		}
	}

	return configs, nil
}
Exemplo n.º 9
0
// setup used internally by Caddy to set up this middleware
func setup(c *caddy.Controller) error {
	mc, err := parse(c)
	if err != nil {
		return err
	}

	if c.ServerBlockKeyIndex == 0 {
		// only run when the first hostname has been loaded.
		if mc.maillog, err = mc.maillog.Init(c.ServerBlockKeys...); err != nil {
			return err
		}
		if err = mc.loadFromEnv(); err != nil {
			return err
		}
		if err = mc.loadPGPKeys(); err != nil {
			return err
		}
		if err = mc.loadTemplate(); err != nil {
			return err
		}
		if err = mc.pingSMTP(); err != nil {
			return err
		}

		c.ServerBlockStorage = newHandler(mc, startMailDaemon(mc))
	}

	c.OnShutdown(func() error {
		if moh, ok := c.ServerBlockStorage.(*handler); ok {
			if moh.reqPipe != nil {
				close(moh.reqPipe)
				moh.reqPipe = nil
			}
		}
		return nil
	})

	fmt.Printf("%#v\n\n", c)

	if moh, ok := c.ServerBlockStorage.(*handler); ok { // moh = mailOutHandler ;-)
		httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
			moh.Next = next
			return moh
		})
		return nil
	}
	return errors.New("[mailout] Could not create the middleware handler")
}
Exemplo n.º 10
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// extParse sets up an instance of extension middleware
// from a middleware controller and returns a list of extensions.
func extParse(c *caddy.Controller) ([]string, error) {
	var exts []string

	for c.Next() {
		// At least one extension is required
		if !c.NextArg() {
			return exts, c.ArgErr()
		}
		exts = append(exts, c.Val())

		// Tack on any other extensions that may have been listed
		exts = append(exts, c.RemainingArgs()...)
	}

	return exts, nil
}
Exemplo n.º 11
0
// registerCallback registers a callback function to execute by
// using c to parse the directive. It registers the callback
// to be executed using registerFunc.
func registerCallback(c *caddy.Controller, registerFunc func(func() error)) error {
	var funcs []func() error

	for c.Next() {
		args := c.RemainingArgs()
		if len(args) == 0 {
			return c.ArgErr()
		}

		nonblock := false
		if len(args) > 1 && args[len(args)-1] == "&" {
			// Run command in background; non-blocking
			nonblock = true
			args = args[:len(args)-1]
		}

		command, args, err := caddy.SplitCommandAndArgs(strings.Join(args, " "))
		if err != nil {
			return c.Err(err.Error())
		}

		fn := func() error {
			cmd := exec.Command(command, args...)
			cmd.Stdin = os.Stdin
			cmd.Stdout = os.Stdout
			cmd.Stderr = os.Stderr
			if nonblock {
				log.Printf("[INFO] Nonblocking Command:\"%s %s\"", command, strings.Join(args, " "))
				return cmd.Start()
			}
			log.Printf("[INFO] Blocking Command:\"%s %s\"", command, strings.Join(args, " "))
			return cmd.Run()
		}

		funcs = append(funcs, fn)
	}

	return c.OncePerServerBlock(func() error {
		for _, fn := range funcs {
			registerFunc(fn)
		}
		return nil
	})
}
Exemplo n.º 12
0
func Setup(c *caddy.Controller) error {
	var m *module
	for c.Next() {
		if m != nil {
			return c.Err("cannot specify realip more than once")
		}
		m = &module{
			Header: "X-Forwarded-For",
		}
		if err := parse(m, c); err != nil {
			return err
		}
	}
	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
		m.next = next
		return m
	})
	return nil
}
Exemplo n.º 13
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func internalParse(c *caddy.Controller) ([]string, error) {
	var paths []string

	for c.Next() {
		if !c.NextArg() {
			return paths, c.ArgErr()
		}
		paths = append(paths, c.Val())
	}

	return paths, nil
}
Exemplo n.º 14
0
// ipfilterParse parses all ipfilter {} blocks to an IPFConfig
func ipfilterParse(c *caddy.Controller) (IPFConfig, error) {
	var config IPFConfig

	var hasCountryCodes, hasRanges bool

	for c.Next() {
		path, err := ipfilterParseSingle(&config, c)
		if err != nil {
			return config, err
		}

		if len(path.CountryCodes) != 0 {
			hasCountryCodes = true
		}
		if len(path.Nets) != 0 {
			hasRanges = true
		}

		config.Paths = append(config.Paths, path)
	}

	// having a database is mandatory if you are blocking by country codes.
	if hasCountryCodes && config.DBHandler == nil {
		return config, c.Err("ipfilter: Database is required to block/allow by country")
	}

	// needs atleast one of the three.
	if !hasCountryCodes && !hasRanges {
		return config, c.Err("ipfilter: No IPs or Country codes has been provided")
	}

	return config, nil
}
Exemplo n.º 15
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// IfMatcherKeyword checks if the next value in the dispenser is a keyword for 'if' config block.
// If true, remaining arguments in the dispinser are cleard to keep the dispenser valid for use.
func IfMatcherKeyword(c *caddy.Controller) bool {
	if c.Val() == "if" || c.Val() == "if_op" {
		// clear remainig args
		c.RemainingArgs()
		return true
	}
	return false
}
Exemplo n.º 16
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func jsonpParse(c *caddy.Controller) ([]string, error) {
	var paths []string

	if db1 {
		fmt.Printf("jsonpParse called\n")
	}

	for c.Next() {
		if !c.NextArg() {
			return paths, c.ArgErr()
		}
		paths = append(paths, c.Val())
	}

	return paths, nil
}
Exemplo n.º 17
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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
}
Exemplo n.º 18
0
func setupBind(c *caddy.Controller) error {
	config := httpserver.GetConfig(c)
	for c.Next() {
		if !c.Args(&config.ListenHost) {
			return c.ArgErr()
		}
		config.TLS.ListenHost = config.ListenHost // necessary for ACME challenges, see issue #309
	}
	return nil
}
Exemplo n.º 19
0
func markdownParse(c *caddy.Controller) ([]*Config, error) {
	var mdconfigs []*Config

	for c.Next() {
		md := &Config{
			Renderer:   blackfriday.HtmlRenderer(0, "", ""),
			Extensions: make(map[string]struct{}),
			Template:   GetDefaultTemplate(),
		}

		// Get the path scope
		args := c.RemainingArgs()
		switch len(args) {
		case 0:
			md.PathScope = "/"
		case 1:
			md.PathScope = args[0]
		default:
			return mdconfigs, c.ArgErr()
		}

		// Load any other configuration parameters
		for c.NextBlock() {
			if err := loadParams(c, md); err != nil {
				return mdconfigs, err
			}
		}

		// If no extensions were specified, assume some defaults
		if len(md.Extensions) == 0 {
			md.Extensions[".md"] = struct{}{}
			md.Extensions[".markdown"] = struct{}{}
			md.Extensions[".mdown"] = struct{}{}
		}

		mdconfigs = append(mdconfigs, md)
	}

	return mdconfigs, nil
}
Exemplo n.º 20
0
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])
	}
}
Exemplo n.º 21
0
func expVarParse(c *caddy.Controller) (Resource, error) {
	var resource Resource
	var err error

	for c.Next() {
		args := c.RemainingArgs()
		switch len(args) {
		case 0:
			resource = Resource(defaultExpvarPath)
		case 1:
			resource = Resource(args[0])
		default:
			return resource, c.ArgErr()
		}
	}

	return resource, err
}
Exemplo n.º 22
0
// 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
}
Exemplo n.º 23
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func rewriteParse(c *caddy.Controller) ([]httpserver.HandlerConfig, error) {
	var rules []httpserver.HandlerConfig

	for c.Next() {
		var rule Rule
		var err error
		var base = "/"
		var pattern, to string
		var ext []string

		args := c.RemainingArgs()

		var matcher httpserver.RequestMatcher

		switch len(args) {
		case 1:
			base = args[0]
			fallthrough
		case 0:
			// Integrate request matcher for 'if' conditions.
			matcher, err = httpserver.SetupIfMatcher(c)
			if err != nil {
				return nil, err
			}

			for c.NextBlock() {
				if httpserver.IfMatcherKeyword(c) {
					continue
				}
				switch c.Val() {
				case "r", "regexp":
					if !c.NextArg() {
						return nil, c.ArgErr()
					}
					pattern = c.Val()
				case "to":
					args1 := c.RemainingArgs()
					if len(args1) == 0 {
						return nil, c.ArgErr()
					}
					to = strings.Join(args1, " ")
				case "ext":
					args1 := c.RemainingArgs()
					if len(args1) == 0 {
						return nil, c.ArgErr()
					}
					ext = args1
				default:
					return nil, c.ArgErr()
				}
			}
			// ensure to is specified
			if to == "" {
				return nil, c.ArgErr()
			}
			if rule, err = NewComplexRule(base, pattern, to, ext, matcher); err != nil {
				return nil, err
			}
			rules = append(rules, rule)

		// the only unhandled case is 2 and above
		default:
			rule = NewSimpleRule(args[0], strings.Join(args[1:], " "))
			rules = append(rules, rule)
		}

	}

	return rules, nil
}
Exemplo n.º 24
0
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
}
Exemplo n.º 25
0
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
}
Exemplo n.º 26
0
func webSocketParse(c *caddy.Controller) ([]Config, error) {
	var websocks []Config
	var respawn bool

	optionalBlock := func() (hadBlock bool, err error) {
		for c.NextBlock() {
			hadBlock = true
			if c.Val() == "respawn" {
				respawn = true
			} else {
				return true, c.Err("Expected websocket configuration parameter in block")
			}
		}
		return
	}

	for c.Next() {
		var val, path, command string

		// Path or command; not sure which yet
		if !c.NextArg() {
			return nil, c.ArgErr()
		}
		val = c.Val()

		// Extra configuration may be in a block
		hadBlock, err := optionalBlock()
		if err != nil {
			return nil, err
		}

		if !hadBlock {
			// The next argument on this line will be the command or an open curly brace
			if c.NextArg() {
				path = val
				command = c.Val()
			} else {
				path = "/"
				command = val
			}

			// Okay, check again for optional block
			_, err = optionalBlock()
			if err != nil {
				return nil, err
			}
		}

		// Split command into the actual command and its arguments
		cmd, args, err := caddy.SplitCommandAndArgs(command)
		if err != nil {
			return nil, err
		}

		websocks = append(websocks, Config{
			Path:      path,
			Command:   cmd,
			Arguments: args,
			Respawn:   respawn, // TODO: This isn't used currently
		})
	}

	return websocks, nil

}
Exemplo n.º 27
0
func NoArgs(c *caddy.Controller) error {
	if len(c.RemainingArgs()) != 0 {
		return c.ArgErr()
	}
	return nil
}
Exemplo n.º 28
0
// 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
	})
}
Exemplo n.º 29
0
// 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
}
Exemplo n.º 30
0
func setupMaxRequestBody(c *caddy.Controller) error {
	config := httpserver.GetConfig(c)

	if !c.Next() {
		return c.ArgErr()
	}

	args := c.RemainingArgs()
	argList := []pathLimitUnparsed{}

	switch len(args) {
	case 0:
		// Format: { <path> <limit> ... }
		for c.NextBlock() {
			path := c.Val()
			if !c.NextArg() {
				// Uneven pairing of path/limit
				return c.ArgErr()
			}
			argList = append(argList, pathLimitUnparsed{
				Path:  path,
				Limit: c.Val(),
			})
		}
	case 1:
		// Format: <limit>
		argList = []pathLimitUnparsed{{
			Path:  "/",
			Limit: args[0],
		}}
	case 2:
		// Format: <path> <limit>
		argList = []pathLimitUnparsed{{
			Path:  args[0],
			Limit: args[1],
		}}
	default:
		return c.ArgErr()
	}

	pathLimit, err := parseArguments(argList)
	if err != nil {
		return c.ArgErr()
	}

	SortPathLimits(pathLimit)

	config.MaxRequestBodySizes = pathLimit

	return nil
}