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package http
import (
"errors"
"fmt"
"github.com/spiral/roadrunner"
"github.com/spiral/roadrunner/service"
"net"
"os"
"strings"
)
// Config configures RoadRunner HTTP server.
type Config struct {
// Port and port to handle as http server.
Address string
// SSL defines https server options.
SSL SSLConfig
// FCGI configuration. You can use FastCGI without HTTP server.
FCGI *FCGIConfig
// HTTP2 configuration
HTTP2 *HTTP2Config
// MaxRequestSize specified max size for payload body in megabytes, set 0 to unlimited.
MaxRequestSize int64
// TrustedSubnets declare IP subnets which are allowed to set ip using X-Real-Ip and X-Forwarded-For
TrustedSubnets []string
cidrs []*net.IPNet
// Uploads configures uploads configuration.
Uploads *UploadsConfig
// Workers configures rr server and worker pool.
Workers *roadrunner.ServerConfig
}
// FCGIConfig for FastCGI server.
type FCGIConfig struct {
// Address and port to handle as http server.
Address string
}
// HTTP2Config HTTP/2 server customizations.
type HTTP2Config struct {
// Enable or disable HTTP/2 extension, default enable.
Enabled bool
// H2C enables HTTP/2 over TCP
H2C bool
// MaxConcurrentStreams defaults to 128.
MaxConcurrentStreams uint32
}
// InitDefaults sets default values for HTTP/2 configuration.
func (cfg *HTTP2Config) InitDefaults() error {
cfg.Enabled = true
cfg.MaxConcurrentStreams = 128
return nil
}
// SSLConfig defines https server configuration.
type SSLConfig struct {
// Port to listen as HTTPS server, defaults to 443.
Port int
// Redirect when enabled forces all http connections to switch to https.
Redirect bool
// Key defined private server key.
Key string
// Cert is https certificate.
Cert string
}
// EnableHTTP is true when http server must run.
func (c *Config) EnableHTTP() bool {
return c.Address != ""
}
// EnableTLS returns true if rr must listen TLS connections.
func (c *Config) EnableTLS() bool {
return c.SSL.Key != "" || c.SSL.Cert != ""
}
// EnableHTTP2 when HTTP/2 extension must be enabled (only with TSL).
func (c *Config) EnableHTTP2() bool {
return c.HTTP2.Enabled
}
// EnableH2C when HTTP/2 extension must be enabled on TCP.
func (c *Config) EnableH2C() bool {
return c.HTTP2.H2C
}
// EnableFCGI is true when FastCGI server must be enabled.
func (c *Config) EnableFCGI() bool {
return c.FCGI.Address != ""
}
// Hydrate must populate Config values using given Config source. Must return error if Config is not valid.
func (c *Config) Hydrate(cfg service.Config) error {
if c.Workers == nil {
c.Workers = &roadrunner.ServerConfig{}
}
if c.HTTP2 == nil {
c.HTTP2 = &HTTP2Config{}
}
if c.FCGI == nil {
c.FCGI = &FCGIConfig{}
}
if c.Uploads == nil {
c.Uploads = &UploadsConfig{}
}
if c.SSL.Port == 0 {
c.SSL.Port = 443
}
c.HTTP2.InitDefaults()
c.Uploads.InitDefaults()
c.Workers.InitDefaults()
if err := cfg.Unmarshal(c); err != nil {
return err
}
c.Workers.UpscaleDurations()
if c.TrustedSubnets == nil {
// @see https://en.wikipedia.org/wiki/Reserved_IP_addresses
c.TrustedSubnets = []string{
"10.0.0.0/8",
"127.0.0.0/8",
"172.16.0.0/12",
"192.168.0.0/16",
"::1/128",
"fc00::/7",
"fe80::/10",
}
}
if err := c.parseCIDRs(); err != nil {
return err
}
return c.Valid()
}
func (c *Config) parseCIDRs() error {
for _, cidr := range c.TrustedSubnets {
_, cr, err := net.ParseCIDR(cidr)
if err != nil {
return err
}
c.cidrs = append(c.cidrs, cr)
}
return nil
}
// IsTrusted if api can be trusted to use X-Real-Ip, X-Forwarded-For
func (c *Config) IsTrusted(ip string) bool {
if c.cidrs == nil {
return false
}
i := net.ParseIP(ip)
if i == nil {
return false
}
for _, cird := range c.cidrs {
if cird.Contains(i) {
return true
}
}
return false
}
// Valid validates the configuration.
func (c *Config) Valid() error {
if c.Uploads == nil {
return errors.New("mailformed uploads config")
}
if c.HTTP2 == nil {
return errors.New("mailformed http2 config")
}
if c.Workers == nil {
return errors.New("mailformed workers config")
}
if c.Workers.Pool == nil {
return errors.New("mailformed workers config (pool config is missing)")
}
if err := c.Workers.Pool.Valid(); err != nil {
return err
}
if !c.EnableHTTP() && !c.EnableTLS() && !c.EnableFCGI() {
return errors.New("unable to run http service, no method has been specified (http, https, http/2 or FastCGI)")
}
if c.Address != "" && !strings.Contains(c.Address, ":") {
return errors.New("mailformed http server address")
}
if c.EnableTLS() {
if _, err := os.Stat(c.SSL.Key); err != nil {
if os.IsNotExist(err) {
return fmt.Errorf("key file '%s' does not exists", c.SSL.Key)
}
return err
}
if _, err := os.Stat(c.SSL.Cert); err != nil {
if os.IsNotExist(err) {
return fmt.Errorf("cert file '%s' does not exists", c.SSL.Cert)
}
return err
}
}
return nil
}
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