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path: root/src/pkg/net/http/fcgi/fcgi.go
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Diffstat (limited to 'src/pkg/net/http/fcgi/fcgi.go')
-rw-r--r--src/pkg/net/http/fcgi/fcgi.go274
1 files changed, 0 insertions, 274 deletions
diff --git a/src/pkg/net/http/fcgi/fcgi.go b/src/pkg/net/http/fcgi/fcgi.go
deleted file mode 100644
index 06bba0488..000000000
--- a/src/pkg/net/http/fcgi/fcgi.go
+++ /dev/null
@@ -1,274 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package fcgi implements the FastCGI protocol.
-// Currently only the responder role is supported.
-// The protocol is defined at http://www.fastcgi.com/drupal/node/6?q=node/22
-package fcgi
-
-// This file defines the raw protocol and some utilities used by the child and
-// the host.
-
-import (
- "bufio"
- "bytes"
- "encoding/binary"
- "errors"
- "io"
- "sync"
-)
-
-// recType is a record type, as defined by
-// http://www.fastcgi.com/devkit/doc/fcgi-spec.html#S8
-type recType uint8
-
-const (
- typeBeginRequest recType = 1
- typeAbortRequest recType = 2
- typeEndRequest recType = 3
- typeParams recType = 4
- typeStdin recType = 5
- typeStdout recType = 6
- typeStderr recType = 7
- typeData recType = 8
- typeGetValues recType = 9
- typeGetValuesResult recType = 10
- typeUnknownType recType = 11
-)
-
-// keep the connection between web-server and responder open after request
-const flagKeepConn = 1
-
-const (
- maxWrite = 65535 // maximum record body
- maxPad = 255
-)
-
-const (
- roleResponder = iota + 1 // only Responders are implemented.
- roleAuthorizer
- roleFilter
-)
-
-const (
- statusRequestComplete = iota
- statusCantMultiplex
- statusOverloaded
- statusUnknownRole
-)
-
-const headerLen = 8
-
-type header struct {
- Version uint8
- Type recType
- Id uint16
- ContentLength uint16
- PaddingLength uint8
- Reserved uint8
-}
-
-type beginRequest struct {
- role uint16
- flags uint8
- reserved [5]uint8
-}
-
-func (br *beginRequest) read(content []byte) error {
- if len(content) != 8 {
- return errors.New("fcgi: invalid begin request record")
- }
- br.role = binary.BigEndian.Uint16(content)
- br.flags = content[2]
- return nil
-}
-
-// for padding so we don't have to allocate all the time
-// not synchronized because we don't care what the contents are
-var pad [maxPad]byte
-
-func (h *header) init(recType recType, reqId uint16, contentLength int) {
- h.Version = 1
- h.Type = recType
- h.Id = reqId
- h.ContentLength = uint16(contentLength)
- h.PaddingLength = uint8(-contentLength & 7)
-}
-
-// conn sends records over rwc
-type conn struct {
- mutex sync.Mutex
- rwc io.ReadWriteCloser
-
- // to avoid allocations
- buf bytes.Buffer
- h header
-}
-
-func newConn(rwc io.ReadWriteCloser) *conn {
- return &conn{rwc: rwc}
-}
-
-func (c *conn) Close() error {
- c.mutex.Lock()
- defer c.mutex.Unlock()
- return c.rwc.Close()
-}
-
-type record struct {
- h header
- buf [maxWrite + maxPad]byte
-}
-
-func (rec *record) read(r io.Reader) (err error) {
- if err = binary.Read(r, binary.BigEndian, &rec.h); err != nil {
- return err
- }
- if rec.h.Version != 1 {
- return errors.New("fcgi: invalid header version")
- }
- n := int(rec.h.ContentLength) + int(rec.h.PaddingLength)
- if _, err = io.ReadFull(r, rec.buf[:n]); err != nil {
- return err
- }
- return nil
-}
-
-func (r *record) content() []byte {
- return r.buf[:r.h.ContentLength]
-}
-
-// writeRecord writes and sends a single record.
-func (c *conn) writeRecord(recType recType, reqId uint16, b []byte) error {
- c.mutex.Lock()
- defer c.mutex.Unlock()
- c.buf.Reset()
- c.h.init(recType, reqId, len(b))
- if err := binary.Write(&c.buf, binary.BigEndian, c.h); err != nil {
- return err
- }
- if _, err := c.buf.Write(b); err != nil {
- return err
- }
- if _, err := c.buf.Write(pad[:c.h.PaddingLength]); err != nil {
- return err
- }
- _, err := c.rwc.Write(c.buf.Bytes())
- return err
-}
-
-func (c *conn) writeBeginRequest(reqId uint16, role uint16, flags uint8) error {
- b := [8]byte{byte(role >> 8), byte(role), flags}
- return c.writeRecord(typeBeginRequest, reqId, b[:])
-}
-
-func (c *conn) writeEndRequest(reqId uint16, appStatus int, protocolStatus uint8) error {
- b := make([]byte, 8)
- binary.BigEndian.PutUint32(b, uint32(appStatus))
- b[4] = protocolStatus
- return c.writeRecord(typeEndRequest, reqId, b)
-}
-
-func (c *conn) writePairs(recType recType, reqId uint16, pairs map[string]string) error {
- w := newWriter(c, recType, reqId)
- b := make([]byte, 8)
- for k, v := range pairs {
- n := encodeSize(b, uint32(len(k)))
- n += encodeSize(b[n:], uint32(len(v)))
- if _, err := w.Write(b[:n]); err != nil {
- return err
- }
- if _, err := w.WriteString(k); err != nil {
- return err
- }
- if _, err := w.WriteString(v); err != nil {
- return err
- }
- }
- w.Close()
- return nil
-}
-
-func readSize(s []byte) (uint32, int) {
- if len(s) == 0 {
- return 0, 0
- }
- size, n := uint32(s[0]), 1
- if size&(1<<7) != 0 {
- if len(s) < 4 {
- return 0, 0
- }
- n = 4
- size = binary.BigEndian.Uint32(s)
- size &^= 1 << 31
- }
- return size, n
-}
-
-func readString(s []byte, size uint32) string {
- if size > uint32(len(s)) {
- return ""
- }
- return string(s[:size])
-}
-
-func encodeSize(b []byte, size uint32) int {
- if size > 127 {
- size |= 1 << 31
- binary.BigEndian.PutUint32(b, size)
- return 4
- }
- b[0] = byte(size)
- return 1
-}
-
-// bufWriter encapsulates bufio.Writer but also closes the underlying stream when
-// Closed.
-type bufWriter struct {
- closer io.Closer
- *bufio.Writer
-}
-
-func (w *bufWriter) Close() error {
- if err := w.Writer.Flush(); err != nil {
- w.closer.Close()
- return err
- }
- return w.closer.Close()
-}
-
-func newWriter(c *conn, recType recType, reqId uint16) *bufWriter {
- s := &streamWriter{c: c, recType: recType, reqId: reqId}
- w := bufio.NewWriterSize(s, maxWrite)
- return &bufWriter{s, w}
-}
-
-// streamWriter abstracts out the separation of a stream into discrete records.
-// It only writes maxWrite bytes at a time.
-type streamWriter struct {
- c *conn
- recType recType
- reqId uint16
-}
-
-func (w *streamWriter) Write(p []byte) (int, error) {
- nn := 0
- for len(p) > 0 {
- n := len(p)
- if n > maxWrite {
- n = maxWrite
- }
- if err := w.c.writeRecord(w.recType, w.reqId, p[:n]); err != nil {
- return nn, err
- }
- nn += n
- p = p[n:]
- }
- return nn, nil
-}
-
-func (w *streamWriter) Close() error {
- // send empty record to close the stream
- return w.c.writeRecord(w.recType, w.reqId, nil)
-}