6 files changed, 348 insertions, 0 deletions
diff --git a/plugins/http/config/fcgi.go b/plugins/http/config/fcgi.go
new file mode 100644
index 00000000..3d4acbe1
--- /dev/null
+++ b/plugins/http/config/fcgi.go
@@ -0,0 +1,7 @@
+package config
+
+// FCGI for FastCGI server.
+type FCGI struct {
+	// Address and port to handle as http server.
+	Address string
+}
diff --git a/plugins/http/config/http.go b/plugins/http/config/http.go
new file mode 100644
index 00000000..76547fde
--- /dev/null
+++ b/plugins/http/config/http.go
@@ -0,0 +1,222 @@
+package config
+
+import (
+	"net"
+	"os"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/spiral/errors"
+	poolImpl "github.com/spiral/roadrunner/v2/pkg/pool"
+)
+
+// HTTP configures RoadRunner HTTP server.
+type HTTP struct {
+	// Port and port to handle as http server.
+	Address string
+
+	// SSLConfig defines https server options.
+	SSLConfig *SSL `mapstructure:"ssl"`
+
+	// FCGIConfig configuration. You can use FastCGI without HTTP server.
+	FCGIConfig *FCGI `mapstructure:"fcgi"`
+
+	// HTTP2Config configuration
+	HTTP2Config *HTTP2 `mapstructure:"http2"`
+
+	// MaxRequestSize specified max size for payload body in megabytes, set 0 to unlimited.
+	MaxRequestSize uint64 `mapstructure:"max_request_size"`
+
+	// TrustedSubnets declare IP subnets which are allowed to set ip using X-Real-Ip and X-Forwarded-For
+	TrustedSubnets []string `mapstructure:"trusted_subnets"`
+
+	// Uploads configures uploads configuration.
+	Uploads *Uploads `mapstructure:"uploads"`
+
+	// Pool configures worker pool.
+	Pool *poolImpl.Config `mapstructure:"pool"`
+
+	// Env is environment variables passed to the  http pool
+	Env map[string]string
+
+	// List of the middleware names (order will be preserved)
+	Middleware []string
+
+	// slice of net.IPNet
+	Cidrs Cidrs
+}
+
+// EnableHTTP is true when http server must run.
+func (c *HTTP) EnableHTTP() bool {
+	return c.Address != ""
+}
+
+// EnableTLS returns true if pool must listen TLS connections.
+func (c *HTTP) EnableTLS() bool {
+	return c.SSLConfig.Key != "" || c.SSLConfig.Cert != "" || c.SSLConfig.RootCA != ""
+}
+
+// EnableH2C when HTTP/2 extension must be enabled on TCP.
+func (c *HTTP) EnableH2C() bool {
+	return c.HTTP2Config.H2C
+}
+
+// EnableFCGI is true when FastCGI server must be enabled.
+func (c *HTTP) EnableFCGI() bool {
+	return c.FCGIConfig.Address != ""
+}
+
+// InitDefaults must populate HTTP values using given HTTP source. Must return error if HTTP is not valid.
+func (c *HTTP) InitDefaults() error {
+	if c.Pool == nil {
+		// default pool
+		c.Pool = &poolImpl.Config{
+			Debug:           false,
+			NumWorkers:      int64(runtime.NumCPU()),
+			MaxJobs:         1000,
+			AllocateTimeout: time.Second * 60,
+			DestroyTimeout:  time.Second * 60,
+			Supervisor:      nil,
+		}
+	}
+
+	if c.HTTP2Config == nil {
+		c.HTTP2Config = &HTTP2{}
+	}
+
+	if c.FCGIConfig == nil {
+		c.FCGIConfig = &FCGI{}
+	}
+
+	if c.Uploads == nil {
+		c.Uploads = &Uploads{}
+	}
+
+	if c.SSLConfig == nil {
+		c.SSLConfig = &SSL{}
+	}
+
+	if c.SSLConfig.Port == 0 {
+		c.SSLConfig.Port = 443
+	}
+
+	err := c.HTTP2Config.InitDefaults()
+	if err != nil {
+		return err
+	}
+	err = c.Uploads.InitDefaults()
+	if err != nil {
+		return err
+	}
+
+	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",
+		}
+	}
+
+	cidrs, err := ParseCIDRs(c.TrustedSubnets)
+	if err != nil {
+		return err
+	}
+	c.Cidrs = cidrs
+
+	return c.Valid()
+}
+
+// ParseCIDRs parse IPNet addresses and return slice of its
+func ParseCIDRs(subnets []string) (Cidrs, error) {
+	c := make(Cidrs, 0, len(subnets))
+	for _, cidr := range subnets {
+		_, cr, err := net.ParseCIDR(cidr)
+		if err != nil {
+			return nil, err
+		}
+
+		c = append(c, cr)
+	}
+
+	return c, nil
+}
+
+// IsTrusted if api can be trusted to use X-Real-Ip, X-Forwarded-For
+func (c *HTTP) 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 *HTTP) Valid() error {
+	const op = errors.Op("validation")
+	if c.Uploads == nil {
+		return errors.E(op, errors.Str("malformed uploads config"))
+	}
+
+	if c.HTTP2Config == nil {
+		return errors.E(op, errors.Str("malformed http2 config"))
+	}
+
+	if c.Pool == nil {
+		return errors.E(op, "malformed pool config")
+	}
+
+	if !c.EnableHTTP() && !c.EnableTLS() && !c.EnableFCGI() {
+		return errors.E(op, errors.Str("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.E(op, errors.Str("malformed http server address"))
+	}
+
+	if c.EnableTLS() {
+		if _, err := os.Stat(c.SSLConfig.Key); err != nil {
+			if os.IsNotExist(err) {
+				return errors.E(op, errors.Errorf("key file '%s' does not exists", c.SSLConfig.Key))
+			}
+
+			return err
+		}
+
+		if _, err := os.Stat(c.SSLConfig.Cert); err != nil {
+			if os.IsNotExist(err) {
+				return errors.E(op, errors.Errorf("cert file '%s' does not exists", c.SSLConfig.Cert))
+			}
+
+			return err
+		}
+
+		// RootCA is optional, but if provided - check it
+		if c.SSLConfig.RootCA != "" {
+			if _, err := os.Stat(c.SSLConfig.RootCA); err != nil {
+				if os.IsNotExist(err) {
+					return errors.E(op, errors.Errorf("root ca path provided, but path '%s' does not exists", c.SSLConfig.RootCA))
+				}
+				return err
+			}
+		}
+	}
+
+	return nil
+}
diff --git a/plugins/http/config/http2.go b/plugins/http/config/http2.go
new file mode 100644
index 00000000..b1e109e9
--- /dev/null
+++ b/plugins/http/config/http2.go
@@ -0,0 +1,28 @@
+package config
+
+// HTTP2 HTTP/2 server customizations.
+type HTTP2 struct {
+	// h2cHandler is a Handler which implements h2c by hijacking the HTTP/1 traffic
+	// that should be h2c traffic. There are two ways to begin a h2c connection
+	// (RFC 7540 Section 3.2 and 3.4): (1) Starting with Prior Knowledge - this
+	// works by starting an h2c connection with a string of bytes that is valid
+	// HTTP/1, but unlikely to occur in practice and (2) Upgrading from HTTP/1 to
+	// h2c - this works by using the HTTP/1 Upgrade header to request an upgrade to
+	// h2c. When either of those situations occur we hijack the HTTP/1 connection,
+	// convert it to a HTTP/2 connection and pass the net.Conn to http2.ServeConn.
+
+	// H2C enables HTTP/2 over TCP
+	H2C bool
+
+	// MaxConcurrentStreams defaults to 128.
+	MaxConcurrentStreams uint32 `mapstructure:"max_concurrent_streams"`
+}
+
+// InitDefaults sets default values for HTTP/2 configuration.
+func (cfg *HTTP2) InitDefaults() error {
+	if cfg.MaxConcurrentStreams == 0 {
+		cfg.MaxConcurrentStreams = 128
+	}
+
+	return nil
+}
diff --git a/plugins/http/config/ip.go b/plugins/http/config/ip.go
new file mode 100644
index 00000000..c4981f74
--- /dev/null
+++ b/plugins/http/config/ip.go
@@ -0,0 +1,26 @@
+package config
+
+import "net"
+
+// Cidrs is a slice of IPNet addresses
+type Cidrs []*net.IPNet
+
+// IsTrusted checks if the ip address exists in the provided in the config addresses
+func (c *Cidrs) IsTrusted(ip string) bool {
+	if len(*c) == 0 {
+		return false
+	}
+
+	i := net.ParseIP(ip)
+	if i == nil {
+		return false
+	}
+
+	for _, cird := range *c {
+		if cird.Contains(i) {
+			return true
+		}
+	}
+
+	return false
+}
diff --git a/plugins/http/config/ssl.go b/plugins/http/config/ssl.go
new file mode 100644
index 00000000..aae6e920
--- /dev/null
+++ b/plugins/http/config/ssl.go
@@ -0,0 +1,19 @@
+package config
+
+// SSL defines https server configuration.
+type SSL 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
+
+	// Root CA file
+	RootCA string
+}
diff --git a/plugins/http/config/uploads_config.go b/plugins/http/config/uploads_config.go
new file mode 100644
index 00000000..5edb0ab7
--- /dev/null
+++ b/plugins/http/config/uploads_config.go
@@ -0,0 +1,46 @@
+package config
+
+import (
+	"os"
+	"path"
+	"strings"
+)
+
+// Uploads describes file location and controls access to them.
+type Uploads struct {
+	// Dir contains name of directory to control access to.
+	Dir string
+
+	// Forbid specifies list of file extensions which are forbidden for access.
+	// Example: .php, .exe, .bat, .htaccess and etc.
+	Forbid []string
+}
+
+// InitDefaults sets missing values to their default values.
+func (cfg *Uploads) InitDefaults() error {
+	cfg.Forbid = []string{".php", ".exe", ".bat"}
+	cfg.Dir = os.TempDir()
+	return nil
+}
+
+// TmpDir returns temporary directory.
+func (cfg *Uploads) TmpDir() string {
+	if cfg.Dir != "" {
+		return cfg.Dir
+	}
+
+	return os.TempDir()
+}
+
+// Forbids must return true if file extension is not allowed for the upload.
+func (cfg *Uploads) Forbids(filename string) bool {
+	ext := strings.ToLower(path.Ext(filename))
+
+	for _, v := range cfg.Forbid {
+		if ext == v {
+			return true
+		}
+	}
+
+	return false
+}