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-rw-r--r--pkg/adapter/containers_remote.go216
-rw-r--r--pkg/varlinkapi/attach.go4
-rw-r--r--pkg/varlinkapi/containers.go52
-rw-r--r--pkg/varlinkapi/virtwriter/virtwriter.go70
4 files changed, 202 insertions, 140 deletions
diff --git a/pkg/adapter/containers_remote.go b/pkg/adapter/containers_remote.go
index 6b9fc8ee7..665821bb6 100644
--- a/pkg/adapter/containers_remote.go
+++ b/pkg/adapter/containers_remote.go
@@ -3,6 +3,7 @@
package adapter
import (
+ "bufio"
"context"
"encoding/json"
"fmt"
@@ -555,93 +556,6 @@ func (r *LocalRuntime) Ps(c *cliconfig.PsValues, opts shared.PsOptions) ([]share
return psContainers, nil
}
-func (r *LocalRuntime) attach(ctx context.Context, stdin, stdout *os.File, cid string, start bool, detachKeys string) (chan error, error) {
- var (
- oldTermState *term.State
- )
- errChan := make(chan error)
- spec, err := r.Spec(cid)
- if err != nil {
- return nil, err
- }
- resize := make(chan remotecommand.TerminalSize, 5)
- haveTerminal := terminal.IsTerminal(int(os.Stdin.Fd()))
-
- // Check if we are attached to a terminal. If we are, generate resize
- // events, and set the terminal to raw mode
- if haveTerminal && spec.Process.Terminal {
- logrus.Debugf("Handling terminal attach")
-
- subCtx, cancel := context.WithCancel(ctx)
- defer cancel()
-
- resizeTty(subCtx, resize)
- oldTermState, err = term.SaveState(os.Stdin.Fd())
- if err != nil {
- return nil, errors.Wrapf(err, "unable to save terminal state")
- }
-
- logrus.SetFormatter(&RawTtyFormatter{})
- term.SetRawTerminal(os.Stdin.Fd())
-
- }
- // TODO add detach keys support
- reply, err := iopodman.Attach().Send(r.Conn, varlink.Upgrade, cid, detachKeys, start)
- if err != nil {
- restoreTerminal(oldTermState)
- return nil, err
- }
-
- // See if the server accepts the upgraded connection or returns an error
- _, err = reply()
-
- if err != nil {
- restoreTerminal(oldTermState)
- return nil, err
- }
-
- // These are the varlink sockets
- reader := r.Conn.Reader
- writer := r.Conn.Writer
-
- // These are the special writers that encode input from the client.
- varlinkStdinWriter := virtwriter.NewVirtWriteCloser(writer, virtwriter.ToStdin)
- varlinkResizeWriter := virtwriter.NewVirtWriteCloser(writer, virtwriter.TerminalResize)
-
- go func() {
- // Read from the wire and direct to stdout or stderr
- err := virtwriter.Reader(reader, stdout, os.Stderr, nil, nil)
- defer restoreTerminal(oldTermState)
- errChan <- err
- }()
-
- go func() {
- for termResize := range resize {
- b, err := json.Marshal(termResize)
- if err != nil {
- defer restoreTerminal(oldTermState)
- errChan <- err
- }
- _, err = varlinkResizeWriter.Write(b)
- if err != nil {
- defer restoreTerminal(oldTermState)
- errChan <- err
- }
- }
- }()
-
- // Takes stdinput and sends it over the wire after being encoded
- go func() {
- if _, err := io.Copy(varlinkStdinWriter, stdin); err != nil {
- defer restoreTerminal(oldTermState)
- errChan <- err
- }
-
- }()
- return errChan, nil
-
-}
-
// Attach to a remote terminal
func (r *LocalRuntime) Attach(ctx context.Context, c *cliconfig.AttachValues) error {
ctr, err := r.LookupContainer(c.InputArgs[0])
@@ -796,6 +710,50 @@ func (r *LocalRuntime) Start(ctx context.Context, c *cliconfig.StartValues, sigP
return exitCode, finalErr
}
+func (r *LocalRuntime) attach(ctx context.Context, stdin, stdout *os.File, cid string, start bool, detachKeys string) (chan error, error) {
+ var (
+ oldTermState *term.State
+ )
+ spec, err := r.Spec(cid)
+ if err != nil {
+ return nil, err
+ }
+ resize := make(chan remotecommand.TerminalSize, 5)
+ haveTerminal := terminal.IsTerminal(int(os.Stdin.Fd()))
+
+ // Check if we are attached to a terminal. If we are, generate resize
+ // events, and set the terminal to raw mode
+ if haveTerminal && spec.Process.Terminal {
+ cancel, oldTermState, err := handleTerminalAttach(ctx, resize)
+ if err != nil {
+ return nil, err
+ }
+ defer cancel()
+ defer restoreTerminal(oldTermState)
+
+ logrus.SetFormatter(&RawTtyFormatter{})
+ term.SetRawTerminal(os.Stdin.Fd())
+ }
+
+ // TODO add detach keys support
+ reply, err := iopodman.Attach().Send(r.Conn, varlink.Upgrade, cid, detachKeys, start)
+ if err != nil {
+ restoreTerminal(oldTermState)
+ return nil, err
+ }
+
+ // See if the server accepts the upgraded connection or returns an error
+ _, err = reply()
+
+ if err != nil {
+ restoreTerminal(oldTermState)
+ return nil, err
+ }
+
+ errChan := configureVarlinkAttachStdio(r.Conn.Reader, r.Conn.Writer, stdin, stdout, oldTermState, resize, nil)
+ return errChan, nil
+}
+
// PauseContainers pauses container(s) based on CLI inputs.
func (r *LocalRuntime) PauseContainers(ctx context.Context, cli *cliconfig.PauseValues) ([]string, map[string]error, error) {
var (
@@ -1037,8 +995,11 @@ func (r *LocalRuntime) Commit(ctx context.Context, c *cliconfig.CommitValues, co
// ExecContainer executes a command in the container
func (r *LocalRuntime) ExecContainer(ctx context.Context, cli *cliconfig.ExecValues) (int, error) {
+ var (
+ oldTermState *term.State
+ ec int = 125
+ )
// default invalid command exit code
- ec := 125
// Validate given environment variables
env := map[string]string{}
if err := parse.ReadKVStrings(env, []string{}, cli.Env); err != nil {
@@ -1051,6 +1012,24 @@ func (r *LocalRuntime) ExecContainer(ctx context.Context, cli *cliconfig.ExecVal
envs = append(envs, fmt.Sprintf("%s=%s", k, v))
}
+ resize := make(chan remotecommand.TerminalSize, 5)
+ haveTerminal := terminal.IsTerminal(int(os.Stdin.Fd()))
+
+ // Check if we are attached to a terminal. If we are, generate resize
+ // events, and set the terminal to raw mode
+ // TODO FIXME tty
+ if haveTerminal && cli.Tty {
+ cancel, oldTermState, err := handleTerminalAttach(ctx, resize)
+ if err != nil {
+ return ec, err
+ }
+ defer cancel()
+ defer restoreTerminal(oldTermState)
+
+ logrus.SetFormatter(&RawTtyFormatter{})
+ term.SetRawTerminal(os.Stdin.Fd())
+ }
+
opts := iopodman.ExecOpts{
Name: cli.InputArgs[0],
Tty: cli.Tty,
@@ -1061,16 +1040,69 @@ func (r *LocalRuntime) ExecContainer(ctx context.Context, cli *cliconfig.ExecVal
Env: &envs,
}
- receive, err := iopodman.ExecContainer().Send(r.Conn, varlink.Upgrade, opts)
+ inputStream := os.Stdin
+ if !cli.Interactive {
+ inputStream = nil
+ }
+
+ reply, err := iopodman.ExecContainer().Send(r.Conn, varlink.Upgrade, opts)
if err != nil {
return ec, errors.Wrapf(err, "Exec failed to contact service for %s", cli.InputArgs)
}
- _, err = receive()
+ _, err = reply()
if err != nil {
return ec, errors.Wrapf(err, "Exec operation failed for %s", cli.InputArgs)
}
- // TODO return exit code from exec call
- return 0, nil
+ ecChan := make(chan int, 1)
+ errChan := configureVarlinkAttachStdio(r.Conn.Reader, r.Conn.Writer, inputStream, os.Stdout, oldTermState, resize, ecChan)
+
+ select {
+ case err = <-errChan:
+ break
+ case ec = <-ecChan:
+ break
+ }
+
+ return ec, err
+}
+
+func configureVarlinkAttachStdio(reader *bufio.Reader, writer *bufio.Writer, stdin *os.File, stdout *os.File, oldTermState *term.State, resize chan remotecommand.TerminalSize, ecChan chan int) chan error {
+ var errChan chan error
+ // These are the special writers that encode input from the client.
+ varlinkStdinWriter := virtwriter.NewVirtWriteCloser(writer, virtwriter.ToStdin)
+ varlinkResizeWriter := virtwriter.NewVirtWriteCloser(writer, virtwriter.TerminalResize)
+
+ go func() {
+ // Read from the wire and direct to stdout or stderr
+ err := virtwriter.Reader(reader, stdout, os.Stderr, nil, nil, ecChan)
+ defer restoreTerminal(oldTermState)
+ errChan <- err
+ }()
+
+ go func() {
+ for termResize := range resize {
+ b, err := json.Marshal(termResize)
+ if err != nil {
+ defer restoreTerminal(oldTermState)
+ errChan <- err
+ }
+ _, err = varlinkResizeWriter.Write(b)
+ if err != nil {
+ defer restoreTerminal(oldTermState)
+ errChan <- err
+ }
+ }
+ }()
+
+ // Takes stdinput and sends it over the wire after being encoded
+ go func() {
+ if _, err := io.Copy(varlinkStdinWriter, stdin); err != nil {
+ defer restoreTerminal(oldTermState)
+ errChan <- err
+ }
+
+ }()
+ return errChan
}
diff --git a/pkg/varlinkapi/attach.go b/pkg/varlinkapi/attach.go
index 97ba525a5..1f8d48eb9 100644
--- a/pkg/varlinkapi/attach.go
+++ b/pkg/varlinkapi/attach.go
@@ -68,7 +68,7 @@ func (i *LibpodAPI) Attach(call iopodman.VarlinkCall, name string, detachKeys st
reader, writer, _, pw, streams := setupStreams(call)
go func() {
- if err := virtwriter.Reader(reader, nil, nil, pw, resize); err != nil {
+ if err := virtwriter.Reader(reader, nil, nil, pw, resize, nil); err != nil {
errChan <- err
}
}()
@@ -83,7 +83,7 @@ func (i *LibpodAPI) Attach(call iopodman.VarlinkCall, name string, detachKeys st
logrus.Error(finalErr)
}
- if err = virtwriter.HangUp(writer); err != nil {
+ if err = virtwriter.HangUp(writer, 0); err != nil {
logrus.Errorf("Failed to HANG-UP attach to %s: %s", ctr.ID(), err.Error())
}
return call.Writer.Flush()
diff --git a/pkg/varlinkapi/containers.go b/pkg/varlinkapi/containers.go
index 19a8bfd2e..4714f3fa0 100644
--- a/pkg/varlinkapi/containers.go
+++ b/pkg/varlinkapi/containers.go
@@ -796,45 +796,55 @@ func (i *LibpodAPI) ExecContainer(call iopodman.VarlinkCall, opts iopodman.ExecO
if opts.Workdir != nil {
workDir = *opts.Workdir
}
+ // ACK the client upgrade request
+ call.ReplyExecContainer()
resizeChan := make(chan remotecommand.TerminalSize)
errChan := make(chan error)
reader, writer, _, pipeWriter, streams := setupStreams(call)
+ //reader, _, _, pipeWriter, streams := setupStreams(call)
+ ecChan := make(chan uint32, 1)
go func() {
fmt.Printf("ExecContainer Start Reader\n")
- if err := virtwriter.Reader(reader, nil, nil, pipeWriter, resizeChan); err != nil {
- fmt.Printf("ExecContainer Reader err %s, %s\n", err.Error(), errors.Cause(err).Error())
- errChan <- err
+ if err := virtwriter.Reader(reader, nil, nil, pipeWriter, resizeChan, nil); err != nil {
+ //fmt.Printf("ExecContainer Reader err %s, %s\n", err.Error(), errors.Cause(err).Error())
+ errChan <- errors.Wrapf(err, "error")
}
}()
- // Debugging...
- time.Sleep(5 * time.Second)
-
+ fmt.Printf("ExecContainer Start ctr.Exec\n")
+ // TODO detach keys and resize
+ // TODO add handling for exit code
+ // TODO capture exit code and return to main thread
go func() {
- fmt.Printf("ExecContainer Start ctr.Exec\n")
- // TODO detach keys and resize
- // TODO add handling for exit code
- // TODO capture exit code and return to main thread
- _, err := ctr.Exec(opts.Tty, opts.Privileged, envs, opts.Cmd, user, workDir, streams, 0, nil, "")
+ ec, err := ctr.Exec(opts.Tty, opts.Privileged, envs, opts.Cmd, user, workDir, streams, 0, resizeChan, "")
if err != nil {
- fmt.Printf("ExecContainer Exec err %s, %s\n", err.Error(), errors.Cause(err).Error())
- errChan <- errors.Wrapf(err, "ExecContainer failed for container %s", ctr.ID())
+ logrus.Errorf("ExecContainer Exec err %s, %s\n", err.Error(), errors.Cause(err).Error())
+ errChan <-err
}
- }()
+ ecChan <-uint32(ec)
- execErr := <-errChan
+ }()
- if execErr != nil && errors.Cause(execErr) != io.EOF {
- fmt.Printf("ExecContainer err: %s\n", execErr.Error())
- return call.ReplyErrorOccurred(execErr.Error())
+ ec := uint32(125)
+ var execErr error
+ select {
+ case execErr = <-errChan:
+ fmt.Println(execErr.Error())
+ case ec = <-ecChan:
+ fmt.Println("found", ec)
}
- if err = virtwriter.HangUp(writer); err != nil {
- fmt.Printf("ExecContainer hangup err: %s\n", err.Error())
+ // TODO FIXME prevent all of vthese conversions
+ if err = virtwriter.HangUp(writer, int(ec)); err != nil {
logrus.Errorf("ExecContainer failed to HANG-UP on %s: %s", ctr.ID(), err.Error())
}
- return call.Writer.Flush()
+ defer fmt.Println("Succeeded in exec'ing")
+ if err := call.Writer.Flush(); err != nil {
+ logrus.Errorf("Exec Container err: %s", err.Error())
+ }
+
+ return execErr
}
diff --git a/pkg/varlinkapi/virtwriter/virtwriter.go b/pkg/varlinkapi/virtwriter/virtwriter.go
index 0da2a91fc..23f945704 100644
--- a/pkg/varlinkapi/virtwriter/virtwriter.go
+++ b/pkg/varlinkapi/virtwriter/virtwriter.go
@@ -89,10 +89,14 @@ func (v VirtWriteCloser) Write(input []byte) (int, error) {
}
// Reader decodes the content that comes over the wire and directs it to the proper destination.
-func Reader(r *bufio.Reader, output io.Writer, errput io.Writer, input io.Writer, resize chan remotecommand.TerminalSize) error {
+func Reader(r *bufio.Reader, output, errput, input io.Writer, resize chan remotecommand.TerminalSize, execEcChan chan int) error {
var messageSize int64
headerBytes := make([]byte, 8)
+ if r == nil {
+ return errors.Errorf("Reader must not be nil")
+ }
+
for {
n, err := io.ReadFull(r, headerBytes)
if err != nil {
@@ -106,44 +110,57 @@ func Reader(r *bufio.Reader, output io.Writer, errput io.Writer, input io.Writer
switch IntToSocketDest(int(headerBytes[0])) {
case ToStdout:
- _, err := io.CopyN(output, r, messageSize)
- if err != nil {
- return err
+ if output != nil {
+ _, err := io.CopyN(output, r, messageSize)
+ if err != nil {
+ return errors.Wrapf(err, "issue stdout")
+ }
}
case ToStderr:
- _, err := io.CopyN(errput, r, messageSize)
- if err != nil {
- return err
+ if errput != nil {
+ _, err := io.CopyN(errput, r, messageSize)
+ if err != nil {
+ return err
+ return errors.Wrapf(err, "issue stderr")
+ }
}
case ToStdin:
- _, err := io.CopyN(input, r, messageSize)
- if err != nil {
- return err
- }
- case TerminalResize:
- out := make([]byte, messageSize)
- if messageSize > 0 {
- _, err = io.ReadFull(r, out)
-
+ if input != nil {
+ _, err := io.CopyN(input, r, messageSize)
if err != nil {
- return err
+ return errors.Wrapf(err, "issue stdin")
}
}
- // Resize events come over in bytes, need to be reserialized
- resizeEvent := remotecommand.TerminalSize{}
- if err := json.Unmarshal(out, &resizeEvent); err != nil {
- return err
+ case TerminalResize:
+ if resize != nil {
+ out := make([]byte, messageSize)
+ if messageSize > 0 {
+ _, err = io.ReadFull(r, out)
+
+ if err != nil {
+ return errors.Wrapf(err, "issue resizing")
+ }
+ }
+ // Resize events come over in bytes, need to be reserialized
+ resizeEvent := remotecommand.TerminalSize{}
+ if err := json.Unmarshal(out, &resizeEvent); err != nil {
+ return errors.Wrapf(err, "issue resizing")
+ }
+ resize <- resizeEvent
}
- resize <- resizeEvent
case Quit:
out := make([]byte, messageSize)
if messageSize > 0 {
_, err = io.ReadFull(r, out)
if err != nil {
- return err
+ return errors.Wrapf(err, "issue quitting")
}
}
+ if execEcChan != nil {
+ ecInt := binary.BigEndian.Uint32(out)
+ execEcChan <-int(ecInt)
+ }
return nil
default:
@@ -154,9 +171,12 @@ func Reader(r *bufio.Reader, output io.Writer, errput io.Writer, input io.Writer
}
// HangUp sends message to peer to close connection
-func HangUp(writer *bufio.Writer) (err error) {
+func HangUp(writer *bufio.Writer, ec int) (err error) {
n := 0
- msg := []byte("HANG-UP")
+ msg := make([]byte, 4)
+
+ binary.LittleEndian.PutUint32(msg, uint32(ec))
+
writeQuit := NewVirtWriteCloser(writer, Quit)
if n, err = writeQuit.Write(msg); err != nil {
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-26 04:04:45 +0000