contrib: remove "persistent-https" remote helper

deleted file mode 100644 index d645695673..0000000000 --- a/contrib/persistent-https/LICENSE +++ /dev/null @@ -1,202 +0,0 @@ - - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. 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deleted file mode 100644 index 691737e76b..0000000000 --- a/contrib/persistent-https/Makefile +++ /dev/null @@ -1,43 +0,0 @@ -# Copyright 2012 Google Inc. All Rights Reserved. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -# The default target of this Makefile is... -all:: - -BUILD_LABEL=$(shell cut -d" " -f3 ../../GIT-VERSION-FILE) -TAR_OUT=$(shell go env GOOS)_$(shell go env GOARCH).tar.gz - -all:: git-remote-persistent-https git-remote-persistent-https--proxy \ - git-remote-persistent-http - -git-remote-persistent-https--proxy: git-remote-persistent-https - ln -f -s git-remote-persistent-https git-remote-persistent-https--proxy - -git-remote-persistent-http: git-remote-persistent-https - ln -f -s git-remote-persistent-https git-remote-persistent-http - -git-remote-persistent-https: - case $$(go version) in \ - "go version go"1.[0-5].*) EQ=" " ;; *) EQ="=" ;; esac && \ - go build -o git-remote-persistent-https \ - -ldflags "-X main._BUILD_EMBED_LABEL$${EQ}$(BUILD_LABEL)" - -clean: - rm -f git-remote-persistent-http* *.tar.gz - -tar: clean all - @chmod 555 git-remote-persistent-https - @tar -czf $(TAR_OUT) git-remote-persistent-http* README LICENSE - @echo - @echo "Created $(TAR_OUT)"

deleted file mode 100644 index 7c4cd8d257..0000000000 --- a/contrib/persistent-https/README +++ /dev/null @@ -1,72 +0,0 @@ -git-remote-persistent-https - -The git-remote-persistent-https binary speeds up SSL operations -by running a daemon job (git-remote-persistent-https--proxy) that -keeps a connection open to a server. - - -PRE-BUILT BINARIES - -Darwin amd64: -https://commondatastorage.googleapis.com/git-remote-persistent-https/darwin_amd64.tar.gz - -Linux amd64: -https://commondatastorage.googleapis.com/git-remote-persistent-https/linux_amd64.tar.gz - - -INSTALLING - -Move all of the git-remote-persistent-http* binaries to a directory -in PATH. - - -USAGE - -HTTPS requests can be delegated to the proxy by using the -"persistent-https" scheme, e.g. - -git clone persistent-https://kernel.googlesource.com/pub/scm/git/git - -Likewise, .gitconfig can be updated as follows to rewrite https urls -to use persistent-https: - -[url "persistent-https"] - insteadof = https -[url "persistent-http"] - insteadof = http - -You may also want to allow the use of the persistent-https helper for -submodule URLs (since any https URLs pointing to submodules will be -rewritten, and Git's out-of-the-box defaults forbid submodules from -using unknown remote helpers): - -[protocol "persistent-https"] - allow = always -[protocol "persistent-http"] - allow = always - - -##################################################################### -# BUILDING FROM SOURCE -##################################################################### - -LOCATION - -The source is available in the contrib/persistent-https directory of -the Git source repository. The Git source repository is available at -git://git.kernel.org/pub/scm/git/git.git/ -https://kernel.googlesource.com/pub/scm/git/git - - -PREREQUISITES - -The code is written in Go (http://golang.org/) and the Go compiler is -required. Currently, the compiler must be built and installed from tip -of source, in order to include a fix in the reverse http proxy: -http://code.google.com/p/go/source/detail?r=a615b796570a2cd8591884767a7d67ede74f6648 - - -BUILDING - -Run "make" to build the binaries. See the section on -INSTALLING above.

deleted file mode 100644 index 71125b5832..0000000000 --- a/contrib/persistent-https/client.go +++ /dev/null @@ -1,189 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "bufio" - "errors" - "fmt" - "net" - "net/url" - "os" - "os/exec" - "strings" - "syscall" - "time" -) - -type Client struct { - ProxyBin string - Args []string - - insecure bool -} - -func (c *Client) Run() error { - if err := c.resolveArgs(); err != nil { - return fmt.Errorf("resolveArgs() got error: %v", err) - } - - // Connect to the proxy. - uconn, hconn, addr, err := c.connect() - if err != nil { - return fmt.Errorf("connect() got error: %v", err) - } - // Keep the unix socket connection open for the duration of the request. - defer uconn.Close() - // Keep a connection to the HTTP server open, so no other user can - // bind on the same address so long as the process is running. - defer hconn.Close() - - // Start the git-remote-http subprocess. - cargs := []string{"-c", fmt.Sprintf("http.proxy=%v", addr), "remote-http"} - cargs = append(cargs, c.Args...) - cmd := exec.Command("git", cargs...) - - for _, v := range os.Environ() { - if !strings.HasPrefix(v, "GIT_PERSISTENT_HTTPS_SECURE=") { - cmd.Env = append(cmd.Env, v) - } - } - // Set the GIT_PERSISTENT_HTTPS_SECURE environment variable when - // the proxy is using a SSL connection. This allows credential helpers - // to identify secure proxy connections, despite being passed an HTTP - // scheme. - if !c.insecure { - cmd.Env = append(cmd.Env, "GIT_PERSISTENT_HTTPS_SECURE=1") - } - - cmd.Stdin = os.Stdin - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - if err := cmd.Run(); err != nil { - if eerr, ok := err.(*exec.ExitError); ok { - if stat, ok := eerr.ProcessState.Sys().(syscall.WaitStatus); ok && stat.ExitStatus() != 0 { - os.Exit(stat.ExitStatus()) - } - } - return fmt.Errorf("git-remote-http subprocess got error: %v", err) - } - return nil -} - -func (c *Client) connect() (uconn net.Conn, hconn net.Conn, addr string, err error) { - uconn, err = DefaultSocket.Dial() - if err != nil { - if e, ok := err.(*net.OpError); ok && (os.IsNotExist(e.Err) || e.Err == syscall.ECONNREFUSED) { - if err = c.startProxy(); err == nil { - uconn, err = DefaultSocket.Dial() - } - } - if err != nil { - return - } - } - - if addr, err = c.readAddr(uconn); err != nil { - return - } - - // Open a tcp connection to the proxy. - if hconn, err = net.Dial("tcp", addr); err != nil { - return - } - - // Verify the address hasn't changed ownership. - var addr2 string - if addr2, err = c.readAddr(uconn); err != nil { - return - } else if addr != addr2 { - err = fmt.Errorf("address changed after connect. got %q, want %q", addr2, addr) - return - } - return -} - -func (c *Client) readAddr(conn net.Conn) (string, error) { - conn.SetDeadline(time.Now().Add(5 * time.Second)) - data := make([]byte, 100) - n, err := conn.Read(data) - if err != nil { - return "", fmt.Errorf("error reading unix socket: %v", err) - } else if n == 0 { - return "", errors.New("empty data response") - } - conn.Write([]byte{1}) // Ack - - var addr string - if addrs := strings.Split(string(data[:n]), "\n"); len(addrs) != 2 { - return "", fmt.Errorf("got %q, wanted 2 addresses", data[:n]) - } else if c.insecure { - addr = addrs[1] - } else { - addr = addrs[0] - } - return addr, nil -} - -func (c *Client) startProxy() error { - cmd := exec.Command(c.ProxyBin) - cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true} - stdout, err := cmd.StdoutPipe() - if err != nil { - return err - } - defer stdout.Close() - if err := cmd.Start(); err != nil { - return err - } - result := make(chan error) - go func() { - bytes, _, err := bufio.NewReader(stdout).ReadLine() - if line := string(bytes); err == nil && line != "OK" { - err = fmt.Errorf("proxy returned %q, want \"OK\"", line) - } - result <- err - }() - select { - case err := <-result: - return err - case <-time.After(5 * time.Second): - return errors.New("timeout waiting for proxy to start") - } - panic("not reachable") -} - -func (c *Client) resolveArgs() error { - if nargs := len(c.Args); nargs == 0 { - return errors.New("remote needed") - } else if nargs > 2 { - return fmt.Errorf("want at most 2 args, got %v", c.Args) - } - - // Rewrite the url scheme to be http. - idx := len(c.Args) - 1 - rawurl := c.Args[idx] - rurl, err := url.Parse(rawurl) - if err != nil { - return fmt.Errorf("invalid remote: %v", err) - } - c.insecure = rurl.Scheme == "persistent-http" - rurl.Scheme = "http" - c.Args[idx] = rurl.String() - if idx != 0 && c.Args[0] == rawurl { - c.Args[0] = c.Args[idx] - } - return nil -}

deleted file mode 100644 index fd1b107743..0000000000 --- a/contrib/persistent-https/main.go +++ /dev/null @@ -1,82 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// The git-remote-persistent-https binary speeds up SSL operations by running -// a daemon job that keeps a connection open to a Git server. This ensures the -// git-remote-persistent-https--proxy is running and delegating execution -// to the git-remote-http binary with the http_proxy set to the daemon job. -// A unix socket is used to authenticate the proxy and discover the -// HTTP address. Note, both the client and proxy are included in the same -// binary. -package main - -import ( - "flag" - "fmt" - "log" - "os" - "strings" - "time" -) - -var ( - forceProxy = flag.Bool("proxy", false, "Whether to start the binary in proxy mode") - proxyBin = flag.String("proxy_bin", "git-remote-persistent-https--proxy", "Path to the proxy binary") - printLabel = flag.Bool("print_label", false, "Prints the build label for the binary") - - // Variable that should be defined through the -X linker flag. - _BUILD_EMBED_LABEL string -) - -const ( - defaultMaxIdleDuration = 24 * time.Hour - defaultPollUpdateInterval = 15 * time.Minute -) - -func main() { - flag.Parse() - if *printLabel { - // Short circuit execution to print the build label - fmt.Println(buildLabel()) - return - } - - var err error - if *forceProxy || strings.HasSuffix(os.Args[0], "--proxy") { - log.SetPrefix("git-remote-persistent-https--proxy: ") - proxy := &Proxy{ - BuildLabel: buildLabel(), - MaxIdleDuration: defaultMaxIdleDuration, - PollUpdateInterval: defaultPollUpdateInterval, - } - err = proxy.Run() - } else { - log.SetPrefix("git-remote-persistent-https: ") - client := &Client{ - ProxyBin: *proxyBin, - Args: flag.Args(), - } - err = client.Run() - } - if err != nil { - log.Fatalln(err) - } -} - -func buildLabel() string { - if _BUILD_EMBED_LABEL == "" { - log.Println(`unlabeled build; build with "make" to label`) - } - return _BUILD_EMBED_LABEL -}

deleted file mode 100644 index bb0cdba386..0000000000 --- a/contrib/persistent-https/proxy.go +++ /dev/null @@ -1,190 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "fmt" - "log" - "net" - "net/http" - "net/http/httputil" - "os" - "os/exec" - "os/signal" - "sync" - "syscall" - "time" -) - -type Proxy struct { - BuildLabel string - MaxIdleDuration time.Duration - PollUpdateInterval time.Duration - - ul net.Listener - httpAddr string - httpsAddr string -} - -func (p *Proxy) Run() error { - hl, err := net.Listen("tcp", "127.0.0.1:0") - if err != nil { - return fmt.Errorf("http listen failed: %v", err) - } - defer hl.Close() - - hsl, err := net.Listen("tcp", "127.0.0.1:0") - if err != nil { - return fmt.Errorf("https listen failed: %v", err) - } - defer hsl.Close() - - p.ul, err = DefaultSocket.Listen() - if err != nil { - c, derr := DefaultSocket.Dial() - if derr == nil { - c.Close() - fmt.Println("OK\nA proxy is already running... exiting") - return nil - } else if e, ok := derr.(*net.OpError); ok && e.Err == syscall.ECONNREFUSED { - // Nothing is listening on the socket, unlink it and try again. - syscall.Unlink(DefaultSocket.Path()) - p.ul, err = DefaultSocket.Listen() - } - if err != nil { - return fmt.Errorf("unix listen failed on %v: %v", DefaultSocket.Path(), err) - } - } - defer p.ul.Close() - go p.closeOnSignal() - go p.closeOnUpdate() - - p.httpAddr = hl.Addr().String() - p.httpsAddr = hsl.Addr().String() - fmt.Printf("OK\nListening on unix socket=%v http=%v https=%v\n", - p.ul.Addr(), p.httpAddr, p.httpsAddr) - - result := make(chan error, 2) - go p.serveUnix(result) - go func() { - result <- http.Serve(hl, &httputil.ReverseProxy{ - FlushInterval: 500 * time.Millisecond, - Director: func(r *http.Request) {}, - }) - }() - go func() { - result <- http.Serve(hsl, &httputil.ReverseProxy{ - FlushInterval: 500 * time.Millisecond, - Director: func(r *http.Request) { - r.URL.Scheme = "https" - }, - }) - }() - return <-result -} - -type socketContext struct { - sync.WaitGroup - mutex sync.Mutex - last time.Time -} - -func (sc *socketContext) Done() { - sc.mutex.Lock() - defer sc.mutex.Unlock() - sc.last = time.Now() - sc.WaitGroup.Done() -} - -func (p *Proxy) serveUnix(result chan<- error) { - sockCtx := &socketContext{} - go p.closeOnIdle(sockCtx) - - var err error - for { - var uconn net.Conn - uconn, err = p.ul.Accept() - if err != nil { - err = fmt.Errorf("accept failed: %v", err) - break - } - sockCtx.Add(1) - go p.handleUnixConn(sockCtx, uconn) - } - sockCtx.Wait() - result <- err -} - -func (p *Proxy) handleUnixConn(sockCtx *socketContext, uconn net.Conn) { - defer sockCtx.Done() - defer uconn.Close() - data := []byte(fmt.Sprintf("%v\n%v", p.httpsAddr, p.httpAddr)) - uconn.SetDeadline(time.Now().Add(5 * time.Second)) - for i := 0; i < 2; i++ { - if n, err := uconn.Write(data); err != nil { - log.Printf("error sending http addresses: %+v\n", err) - return - } else if n != len(data) { - log.Printf("sent %d data bytes, wanted %d\n", n, len(data)) - return - } - if _, err := uconn.Read([]byte{0, 0, 0, 0}); err != nil { - log.Printf("error waiting for Ack: %+v\n", err) - return - } - } - // Wait without a deadline for the client to finish via EOF - uconn.SetDeadline(time.Time{}) - uconn.Read([]byte{0, 0, 0, 0}) -} - -func (p *Proxy) closeOnIdle(sockCtx *socketContext) { - for d := p.MaxIdleDuration; d > 0; { - time.Sleep(d) - sockCtx.Wait() - sockCtx.mutex.Lock() - if d = sockCtx.last.Add(p.MaxIdleDuration).Sub(time.Now()); d <= 0 { - log.Println("graceful shutdown from idle timeout") - p.ul.Close() - } - sockCtx.mutex.Unlock() - } -} - -func (p *Proxy) closeOnUpdate() { - for { - time.Sleep(p.PollUpdateInterval) - if out, err := exec.Command(os.Args[0], "--print_label").Output(); err != nil { - log.Printf("error polling for updated binary: %v\n", err) - } else if s := string(out[:len(out)-1]); p.BuildLabel != s { - log.Printf("graceful shutdown from updated binary: %q --> %q\n", p.BuildLabel, s) - p.ul.Close() - break - } - } -} - -func (p *Proxy) closeOnSignal() { - ch := make(chan os.Signal, 10) - signal.Notify(ch, os.Interrupt, os.Kill, os.Signal(syscall.SIGTERM), os.Signal(syscall.SIGHUP)) - sig := <-ch - p.ul.Close() - switch sig { - case os.Signal(syscall.SIGHUP): - log.Printf("graceful shutdown from signal: %v\n", sig) - default: - log.Fatalf("exiting from signal: %v\n", sig) - } -}

deleted file mode 100644 index 193b911dd1..0000000000 --- a/contrib/persistent-https/socket.go +++ /dev/null @@ -1,97 +0,0 @@ -// Copyright 2012 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "fmt" - "log" - "net" - "os" - "path/filepath" - "syscall" -) - -// A Socket is a wrapper around a Unix socket that verifies directory -// permissions. -type Socket struct { - Dir string -} - -func defaultDir() string { - sockPath := ".git-credential-cache" - if home := os.Getenv("HOME"); home != "" { - return filepath.Join(home, sockPath) - } - log.Printf("socket: cannot find HOME path. using relative directory %q for socket", sockPath) - return sockPath -} - -// DefaultSocket is a Socket in the $HOME/.git-credential-cache directory. -var DefaultSocket = Socket{Dir: defaultDir()} - -// Listen announces the local network address of the unix socket. The -// permissions on the socket directory are verified before attempting -// the actual listen. -func (s Socket) Listen() (net.Listener, error) { - network, addr := "unix", s.Path() - if err := s.mkdir(); err != nil { - return nil, &net.OpError{Op: "listen", Net: network, Addr: &net.UnixAddr{Name: addr, Net: network}, Err: err} - } - return net.Listen(network, addr) -} - -// Dial connects to the unix socket. The permissions on the socket directory -// are verified before attempting the actual dial. -func (s Socket) Dial() (net.Conn, error) { - network, addr := "unix", s.Path() - if err := s.checkPermissions(); err != nil { - return nil, &net.OpError{Op: "dial", Net: network, Addr: &net.UnixAddr{Name: addr, Net: network}, Err: err} - } - return net.Dial(network, addr) -} - -// Path returns the fully specified file name of the unix socket. -func (s Socket) Path() string { - return filepath.Join(s.Dir, "persistent-https-proxy-socket") -} - -func (s Socket) mkdir() error { - if err := s.checkPermissions(); err == nil { - return nil - } else if !os.IsNotExist(err) { - return err - } - if err := os.MkdirAll(s.Dir, 0700); err != nil { - return err - } - return s.checkPermissions() -} - -func (s Socket) checkPermissions() error { - fi, err := os.Stat(s.Dir) - if err != nil { - return err - } - if !fi.IsDir() { - return fmt.Errorf("socket: got file, want directory for %q", s.Dir) - } - if fi.Mode().Perm() != 0700 { - return fmt.Errorf("socket: got perm %o, want 700 for %q", fi.Mode().Perm(), s.Dir) - } - if st := fi.Sys().(*syscall.Stat_t); int(st.Uid) != os.Getuid() { - return fmt.Errorf("socket: got uid %d, want %d for %q", st.Uid, os.Getuid(), s.Dir) - } - return nil -}