Ejemplo n.º 1
0
func mimeParse(c *caddy.Controller) (Config, error) {
	configs := Config{}

	for c.Next() {
		// At least one extension is required

		args := c.RemainingArgs()
		switch len(args) {
		case 2:
			if err := validateExt(configs, args[0]); err != nil {
				return configs, err
			}
			configs[args[0]] = args[1]
		case 1:
			return configs, c.ArgErr()
		case 0:
			for c.NextBlock() {
				ext := c.Val()
				if err := validateExt(configs, ext); err != nil {
					return configs, err
				}
				if !c.NextArg() {
					return configs, c.ArgErr()
				}
				configs[ext] = c.Val()
			}
		}

	}

	return configs, nil
}
Ejemplo n.º 2
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
}
Ejemplo n.º 3
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
}
Ejemplo n.º 4
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
}
Ejemplo n.º 5
0
func templatesParse(c *caddy.Controller) ([]Rule, error) {
	var rules []Rule

	for c.Next() {
		var rule Rule

		rule.Path = defaultTemplatePath
		rule.Extensions = defaultTemplateExtensions

		args := c.RemainingArgs()

		switch len(args) {
		case 0:
			// Optional block
			for c.NextBlock() {
				switch c.Val() {
				case "path":
					args := c.RemainingArgs()
					if len(args) != 1 {
						return nil, c.ArgErr()
					}
					rule.Path = args[0]

				case "ext":
					args := c.RemainingArgs()
					if len(args) == 0 {
						return nil, c.ArgErr()
					}
					rule.Extensions = args

				case "between":
					args := c.RemainingArgs()
					if len(args) != 2 {
						return nil, c.ArgErr()
					}
					rule.Delims[0] = args[0]
					rule.Delims[1] = args[1]
				}
			}
		default:
			// First argument would be the path
			rule.Path = args[0]

			// Any remaining arguments are extensions
			rule.Extensions = args[1:]
			if len(rule.Extensions) == 0 {
				rule.Extensions = defaultTemplateExtensions
			}
		}

		for _, ext := range rule.Extensions {
			rule.IndexFiles = append(rule.IndexFiles, "index"+ext)
		}

		rules = append(rules, rule)
	}
	return rules, nil
}
Ejemplo n.º 6
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
}
Ejemplo n.º 7
0
// nlgidsParse will parse the following directives.
// recipients [email protected] [email protected]
// subject [email protected]
// secret /opt/etc/NLgids-fcbeb7928cdb.json
func nlgidsParse(c *caddy.Controller) (*Config, error) {
	config := new(Config)
	config.Tours = "/opt/www/nlgids.london/tours.json"
	for c.Next() {
		for c.NextBlock() {
			switch c.Val() {
			case "recipients":
				rcpts := c.RemainingArgs()
				if len(rcpts) == 0 {
					return nil, c.ArgErr()
				}
				config.Recipients = append(config.Recipients, rcpts...)
			case "subject":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				config.Subject = c.Val()
				if !strings.Contains(config.Subject, "@") {
					return nil, fmt.Errorf("nlgids: subject must contain @-sign: %s", c.Val())
				}
			case "secret":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				config.Secret = c.Val()
				_, err := os.Open(config.Secret)
				if err != nil {
					return nil, fmt.Errorf("nlgids: secret file must be readable: %s", err)
				}
			case "template":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				config.Template = c.Val()
			case "tours":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				config.Tours = c.Val()
			}
		}
	}
	return config, nil
}
Ejemplo n.º 8
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
}
Ejemplo n.º 9
0
// setup returns a new instance of a pprof handler. It accepts no arguments or options.
func setup(c *caddy.Controller) error {
	found := false

	for c.Next() {
		if found {
			return c.Err("pprof can only be specified once")
		}
		if len(c.RemainingArgs()) != 0 {
			return c.ArgErr()
		}
		if c.NextBlock() {
			return c.ArgErr()
		}
		found = true
	}

	httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
		return &Handler{Next: next, Mux: NewMux()}
	})

	return nil
}
Ejemplo n.º 10
0
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
}
Ejemplo n.º 11
0
func logParse(c *caddy.Controller) ([]Rule, error) {
	var rules []Rule

	for c.Next() {
		args := c.RemainingArgs()

		var logRoller *httpserver.LogRoller
		if c.NextBlock() {
			if c.Val() == "rotate" {
				if c.NextArg() {
					if c.Val() == "{" {
						var err error
						logRoller, err = httpserver.ParseRoller(c)
						if err != nil {
							return nil, err
						}
						// This part doesn't allow having something after the rotate block
						if c.Next() {
							if c.Val() != "}" {
								return nil, c.ArgErr()
							}
						}
					}
				}
			}
		}
		if len(args) == 0 {
			// Nothing specified; use defaults
			rules = append(rules, Rule{
				PathScope:  "/",
				OutputFile: DefaultLogFilename,
				Format:     DefaultLogFormat,
				Roller:     logRoller,
			})
		} else if len(args) == 1 {
			// Only an output file specified
			rules = append(rules, Rule{
				PathScope:  "/",
				OutputFile: args[0],
				Format:     DefaultLogFormat,
				Roller:     logRoller,
			})
		} else {
			// Path scope, output file, and maybe a format specified

			format := DefaultLogFormat

			if len(args) > 2 {
				switch args[2] {
				case "{common}":
					format = CommonLogFormat
				case "{combined}":
					format = CombinedLogFormat
				default:
					format = args[2]
				}
			}

			rules = append(rules, Rule{
				PathScope:  args[0],
				OutputFile: args[1],
				Format:     format,
				Roller:     logRoller,
			})
		}
	}

	return rules, nil
}
Ejemplo n.º 12
0
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
}
Ejemplo n.º 13
0
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
}
Ejemplo n.º 14
0
// Parse parses the configuration set by the user so it can be
// used by the middleware
func parse(c *caddy.Controller, root string) (*Config, *filemanager.FileManager, error) {
	var (
		cfg    *Config
		fm     *filemanager.FileManager
		err    error
		tokens string
	)

	cfg = new(Config)

	if cfg.Hugo, err = exec.LookPath("hugo"); err != nil {
		fmt.Println(HugoNotFound)
		return cfg, fm, errors.New(HugoNotFound)
	}

	for c.Next() {
		cfg.Public = strings.Replace(root, "./", "", -1)
		cfg.BaseURL = "/admin"
		cfg.Root = "./"

		args := c.RemainingArgs()

		if len(args) >= 1 {
			cfg.Root = args[0]
			cfg.Root = strings.TrimSuffix(cfg.Root, "/")
			cfg.Root += "/"
		}

		if len(args) >= 2 {
			cfg.BaseURL = args[1]
			cfg.BaseURL = strings.TrimPrefix(cfg.BaseURL, "/")
			cfg.BaseURL = "/" + cfg.BaseURL
		}

		for c.NextBlock() {
			switch c.Val() {
			case "flag":
				if !c.NextArg() {
					return cfg, &filemanager.FileManager{}, c.ArgErr()
				}

				values := strings.Split(c.Val(), " ")

				if len(values) == 0 {
					return cfg, fm, errors.New("Not enough arguments for 'flag' option.")
				}

				value := "true"

				if len(values) > 1 {
					value = values[1]
				}

				cfg.Args = append(cfg.Args, "--"+values[0]+"="+value)
			case "before_publish":
				if cfg.BeforePublish, err = config.CommandRunner(c); err != nil {
					return cfg, &filemanager.FileManager{}, err
				}
			case "after_publish":
				if cfg.AfterPublish, err = config.CommandRunner(c); err != nil {
					return cfg, &filemanager.FileManager{}, err
				}
			default:
				line := "\n\t" + c.Val()

				if c.NextArg() {
					line += " " + c.Val()
				}

				tokens += line
			}
		}
	}

	tokens = "filemanager " + cfg.BaseURL + " {\n\tshow " + cfg.Root + tokens
	tokens += "\n}"

	fmConfig, err := config.Parse(caddy.NewTestController("http", tokens))

	if err != nil {
		return cfg, fm, err
	}

	fm = &filemanager.FileManager{Configs: fmConfig}
	fm.Configs[0].HugoEnabled = true

	format := getFrontMatter(cfg)

	cfg.WebDavURL = fm.Configs[0].WebDavURL

	for _, user := range fm.Configs[0].Users {
		user.FrontMatter = format
	}

	if err != nil {
		return cfg, fm, err
	}

	return cfg, fm, nil
}
Ejemplo n.º 15
0
// ipfilterParseSingle parses a single ipfilter {} block from the caddy config.
func ipfilterParseSingle(config *IPFConfig, c *caddy.Controller) (IPPath, error) {
	var cPath IPPath

	// Get PathScopes
	cPath.PathScopes = c.RemainingArgs()
	if len(cPath.PathScopes) == 0 {
		return cPath, c.ArgErr()
	}

	// Sort PathScopes by length (the longest is always the most specific so should be tested first)
	sort.Sort(sort.Reverse(ByLength(cPath.PathScopes)))

	for c.NextBlock() {
		value := c.Val()

		switch value {
		case "rule":
			if !c.NextArg() {
				return cPath, c.ArgErr()
			}

			rule := c.Val()
			if rule == "block" {
				cPath.IsBlock = true
			} else if rule != "allow" {
				return cPath, c.Err("ipfilter: Rule should be 'block' or 'allow'")
			}
		case "database":
			if !c.NextArg() {
				return cPath, c.ArgErr()
			}
			// Check if a database has already been opened
			if config.DBHandler != nil {
				return cPath, c.Err("ipfilter: A database is already opened")
			}

			database := c.Val()

			// Open the database.
			var err error
			config.DBHandler, err = maxminddb.Open(database)
			if err != nil {
				return cPath, c.Err("ipfilter: Can't open database: " + database)
			}
		case "blockpage":
			if !c.NextArg() {
				return cPath, c.ArgErr()
			}

			// check if blockpage exists.
			blockpage := c.Val()
			if _, err := os.Stat(blockpage); os.IsNotExist(err) {
				return cPath, c.Err("ipfilter: No such file: " + blockpage)
			}
			cPath.BlockPage = blockpage
		case "country":
			cPath.CountryCodes = c.RemainingArgs()
			if len(cPath.CountryCodes) == 0 {
				return cPath, c.ArgErr()
			}
		case "ip":
			ips := c.RemainingArgs()
			if len(ips) == 0 {
				return cPath, c.ArgErr()
			}

			for _, ip := range ips {
				ipRange, err := parseIP(ip)
				if err != nil {
					return cPath, c.Err("ipfilter: " + err.Error())
				}

				cPath.Nets = append(cPath.Nets, ipRange...)
			}
		case "strict":
			cPath.Strict = true
		}
	}

	return cPath, nil
}
Ejemplo n.º 16
0
func rewriteParse(c *caddy.Controller) ([]Rule, error) {
	var simpleRules []Rule
	var regexpRules []Rule

	for c.Next() {
		var rule Rule
		var err error
		var base = "/"
		var pattern, to string
		var status int
		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.Dispenser)
			if err != nil {
				return nil, err
			}
		block:
			for c.NextBlock() {
				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
				case "status":
					if !c.NextArg() {
						return nil, c.ArgErr()
					}
					status, _ = strconv.Atoi(c.Val())
					if status < 200 || (status > 299 && status < 400) || status > 499 {
						return nil, c.Err("status must be 2xx or 4xx")
					}
				default:
					if httpserver.IfMatcherKeyword(c.Val()) {
						continue block
					}
					return nil, c.ArgErr()
				}
			}
			// ensure to or status is specified
			if to == "" && status == 0 {
				return nil, c.ArgErr()
			}
			if rule, err = NewComplexRule(base, pattern, to, status, ext, matcher); err != nil {
				return nil, err
			}
			regexpRules = append(regexpRules, rule)

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

	}

	// put simple rules in front to avoid regexp computation for them
	return append(simpleRules, regexpRules...), nil
}
Ejemplo n.º 17
0
func parse(c *caddy.Controller) (mc *config, _ error) {
	// This parses the following config blocks
	mc = newConfig()

	for c.Next() {
		args := c.RemainingArgs()

		switch len(args) {
		case 1:
			mc.endpoint = args[0]
		}

		for c.NextBlock() {
			var err error
			switch c.Val() {
			case "publickeyAttachmentFileName":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.pgpAttachmentName = c.Val()
			case "maillog":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				if mc.maillog.IsNil() {
					mc.maillog = maillog.New(c.Val(), "")
				} else {
					mc.maillog.MailDir = c.Val()
				}
			case "errorlog":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				if mc.maillog.IsNil() {
					mc.maillog = maillog.New("", c.Val())
				} else {
					mc.maillog.ErrDir = c.Val()
				}
			case "to":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.to, err = splitEmailAddresses(c.Val())
				if err != nil {
					return nil, err
				}
			case "cc":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.cc, err = splitEmailAddresses(c.Val())
				if err != nil {
					return nil, err
				}
			case "bcc":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.bcc, err = splitEmailAddresses(c.Val())
				if err != nil {
					return nil, err
				}
			case "subject":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.subject = c.Val()
			case "body":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.body = c.Val()
			case "username":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.username = c.Val()
			case "password":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.password = c.Val()
			case "host":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.host = c.Val()
			case "port":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				mc.portRaw = c.Val()
			case "ratelimit_interval":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				var rli time.Duration
				rli, err = time.ParseDuration(c.Val())
				if err != nil {
					return nil, err
				}
				if rli.Nanoseconds() != 0 {
					mc.rateLimitInterval = rli
				}
			case "ratelimit_capacity":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				var rlc int64
				rlc, err = strconv.ParseInt(c.Val(), 10, 64)
				if err != nil {
					return nil, err
				}
				if rlc > 0 {
					mc.rateLimitCapacity = rlc
				}
			default:
				anyKey := c.Val()
				if isValidEmail(anyKey) {
					if !c.NextArg() {
						return nil, c.ArgErr()
					}
					pgpPublicKey := c.Val()
					mc.pgpEmailKeys = append(mc.pgpEmailKeys, anyKey, pgpPublicKey)
				}
			}
		}
	}
	return
}
Ejemplo n.º 18
0
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
}
Ejemplo n.º 19
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
}
Ejemplo n.º 20
0
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
}
Ejemplo n.º 21
0
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] + "'")
			}
		}

		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
			}
		}

		rules = append(rules, rule)
	}

	return rules, nil
}
Ejemplo n.º 22
0
func headersParse(c *caddy.Controller) ([]Rule, error) {
	var rules []Rule

	for c.NextLine() {
		var head Rule
		head.Headers = http.Header{}
		var isNewPattern bool

		if !c.NextArg() {
			return rules, c.ArgErr()
		}
		pattern := c.Val()

		// See if we already have a definition for this Path pattern...
		for _, h := range rules {
			if h.Path == pattern {
				head = h
				break
			}
		}

		// ...otherwise, this is a new pattern
		if head.Path == "" {
			head.Path = pattern
			isNewPattern = true
		}

		for c.NextBlock() {
			// A block of headers was opened...
			name := c.Val()
			value := ""

			if c.NextArg() {
				value = c.Val()
			}

			head.Headers.Add(name, value)
		}
		if c.NextArg() {
			// ... or single header was defined as an argument instead.

			name := c.Val()
			value := c.Val()

			if c.NextArg() {
				value = c.Val()
			}

			head.Headers.Add(name, value)
		}

		if isNewPattern {
			rules = append(rules, head)
		} else {
			for i := 0; i < len(rules); i++ {
				if rules[i].Path == pattern {
					rules[i] = head
					break
				}
			}
		}
	}

	return rules, nil
}
Ejemplo n.º 23
0
// ParseSearchConfig controller information to create a IndexSearch config
func ParseSearchConfig(c *caddy.Controller, cnf *httpserver.SiteConfig) (*Config, error) {
	hosthash := md5.New()
	hosthash.Write([]byte(cnf.Host()))

	conf := &Config{
		HostName:       hex.EncodeToString(hosthash.Sum(nil)),
		Engine:         `bleve`,
		IndexDirectory: `/tmp/caddyIndex`,
		IncludePaths:   []*regexp.Regexp{},
		ExcludePaths:   []*regexp.Regexp{},
		Endpoint:       `/search`,
		SiteRoot:       cnf.Root,
		Expire:         60 * time.Second,
		Template:       nil,
	}

	_, err := os.Stat(conf.SiteRoot)
	if err != nil {
		return nil, c.Err("[search]: `invalid root directory`")
	}

	incPaths := []string{}
	excPaths := []string{}

	for c.Next() {
		args := c.RemainingArgs()

		switch len(args) {
		case 2:
			conf.Endpoint = args[1]
			fallthrough
		case 1:
			incPaths = append(incPaths, args[0])
		}

		for c.NextBlock() {
			switch c.Val() {
			case "engine":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				conf.Engine = c.Val()
			case "+path":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				incPaths = append(incPaths, c.Val())
				incPaths = append(incPaths, c.RemainingArgs()...)
			case "-path":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				excPaths = append(excPaths, c.Val())
				excPaths = append(excPaths, c.RemainingArgs()...)
			case "endpoint":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				conf.Endpoint = c.Val()
			case "expire":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				exp, err := strconv.Atoi(c.Val())
				if err != nil {
					return nil, err
				}
				conf.Expire = time.Duration(exp) * time.Second
			case "datadir":
				if !c.NextArg() {
					return nil, c.ArgErr()
				}
				conf.IndexDirectory = c.Val()
			case "template":
				var err error
				if c.NextArg() {
					conf.Template, err = template.ParseFiles(filepath.Join(conf.SiteRoot, c.Val()))
					if err != nil {
						return nil, err
					}
				}
			}
		}
	}

	if len(incPaths) == 0 {
		incPaths = append(incPaths, "^/")
	}

	conf.IncludePaths = ConvertToRegExp(incPaths)
	conf.ExcludePaths = ConvertToRegExp(excPaths)

	dir := conf.IndexDirectory
	if _, err := os.Stat(dir); os.IsNotExist(err) {
		if err := os.MkdirAll(dir, os.ModePerm); err != nil {
			return nil, c.Err("[search] Given 'datadir' not a valid path.")
		}
	}

	if conf.Template == nil {
		var err error
		conf.Template, err = template.New("search-results").Parse(defaultTemplate)
		if err != nil {
			return nil, err
		}
	}

	return conf, nil
}
Ejemplo n.º 24
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

}
Ejemplo n.º 25
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
}
Ejemplo n.º 26
0
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
}
Ejemplo n.º 27
0
func gzipParse(c *caddy.Controller) ([]Config, error) {
	var configs []Config

	for c.Next() {
		config := Config{}

		// Request Filters
		pathFilter := PathFilter{IgnoredPaths: make(Set)}
		extFilter := ExtFilter{Exts: make(Set)}

		// Response Filters
		lengthFilter := LengthFilter(0)

		// No extra args expected
		if len(c.RemainingArgs()) > 0 {
			return configs, c.ArgErr()
		}

		for c.NextBlock() {
			switch c.Val() {
			case "ext":
				exts := c.RemainingArgs()
				if len(exts) == 0 {
					return configs, c.ArgErr()
				}
				for _, e := range exts {
					if !strings.HasPrefix(e, ".") && e != ExtWildCard && e != "" {
						return configs, fmt.Errorf(`gzip: invalid extension "%v" (must start with dot)`, e)
					}
					extFilter.Exts.Add(e)
				}
			case "not":
				paths := c.RemainingArgs()
				if len(paths) == 0 {
					return configs, c.ArgErr()
				}
				for _, p := range paths {
					if p == "/" {
						return configs, fmt.Errorf(`gzip: cannot exclude path "/" - remove directive entirely instead`)
					}
					if !strings.HasPrefix(p, "/") {
						return configs, fmt.Errorf(`gzip: invalid path "%v" (must start with /)`, p)
					}
					pathFilter.IgnoredPaths.Add(p)
				}
			case "level":
				if !c.NextArg() {
					return configs, c.ArgErr()
				}
				level, _ := strconv.Atoi(c.Val())
				config.Level = level
			case "min_length":
				if !c.NextArg() {
					return configs, c.ArgErr()
				}
				length, err := strconv.ParseInt(c.Val(), 10, 64)
				if err != nil {
					return configs, err
				} else if length == 0 {
					return configs, fmt.Errorf(`gzip: min_length must be greater than 0`)
				}
				lengthFilter = LengthFilter(length)
			default:
				return configs, c.ArgErr()
			}
		}

		// Request Filters
		config.RequestFilters = []RequestFilter{}

		// If ignored paths are specified, put in front to filter with path first
		if len(pathFilter.IgnoredPaths) > 0 {
			config.RequestFilters = []RequestFilter{pathFilter}
		}

		// Then, if extensions are specified, use those to filter.
		// Otherwise, use default extensions filter.
		if len(extFilter.Exts) > 0 {
			config.RequestFilters = append(config.RequestFilters, extFilter)
		} else {
			config.RequestFilters = append(config.RequestFilters, DefaultExtFilter())
		}

		// Response Filters
		// If min_length is specified, use it.
		if int64(lengthFilter) != 0 {
			config.ResponseFilters = append(config.ResponseFilters, lengthFilter)
		}

		configs = append(configs, config)
	}

	return configs, nil
}
Ejemplo n.º 28
0
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
}
Ejemplo n.º 29
0
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
}
Ejemplo n.º 30
0
func rewriteParse(c *caddy.Controller) ([]Rule, error) {
	var simpleRules []Rule
	var regexpRules []Rule

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

		args := c.RemainingArgs()

		var ifs []If

		switch len(args) {
		case 1:
			base = args[0]
			fallthrough
		case 0:
			for c.NextBlock() {
				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
				case "if":
					args1 := c.RemainingArgs()
					if len(args1) != 3 {
						return nil, c.ArgErr()
					}
					ifCond, err := NewIf(args1[0], args1[1], args1[2])
					if err != nil {
						return nil, err
					}
					ifs = append(ifs, ifCond)
				case "status":
					if !c.NextArg() {
						return nil, c.ArgErr()
					}
					status, _ = strconv.Atoi(c.Val())
					if status < 200 || (status > 299 && status < 400) || status > 499 {
						return nil, c.Err("status must be 2xx or 4xx")
					}
				default:
					return nil, c.ArgErr()
				}
			}
			// ensure to or status is specified
			if to == "" && status == 0 {
				return nil, c.ArgErr()
			}
			if rule, err = NewComplexRule(base, pattern, to, status, ext, ifs); err != nil {
				return nil, err
			}
			regexpRules = append(regexpRules, rule)

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

	}

	// put simple rules in front to avoid regexp computation for them
	return append(simpleRules, regexpRules...), nil
}