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Commitcf9d2a3

Browse files
committed
Add the webpage for accessing a web terminal
1 parent15d843e commitcf9d2a3

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17 files changed

+414
-74
lines changed

17 files changed

+414
-74
lines changed

‎.vscode/settings.json

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
{
22
"cSpell.words": [
3+
"circbuf",
34
"cliflag",
45
"cliui",
56
"coderd",
@@ -61,8 +62,10 @@
6162
"unconvert",
6263
"Untar",
6364
"VMID",
65+
"weblinks",
6466
"webrtc",
6567
"xerrors",
68+
"xstate",
6669
"yamux"
6770
],
6871
"emeraldwalk.runonsave": {

‎agent/agent.go

Lines changed: 70 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -18,8 +18,8 @@ import (
1818
"sync"
1919
"time"
2020

21+
"github.com/armon/circbuf"
2122
"github.com/google/uuid"
22-
"github.com/smallnest/ringbuffer"
2323

2424
gsyslog"github.com/hashicorp/go-syslog"
2525
"go.uber.org/atomic"
@@ -417,6 +417,8 @@ func (a *agent) handleSSHSession(session ssh.Session) error {
417417
func (a*agent)handleReconnectingPTY(ctx context.Context,rawIDstring,conn net.Conn) {
418418
deferconn.Close()
419419

420+
// The ID format is referenced in conn.go.
421+
// <uuid>:<height>:<width>
420422
idParts:=strings.Split(rawID,":")
421423
iflen(idParts)!=3 {
422424
a.logger.Warn(ctx,"client sent invalid id format",slog.F("raw-id",rawID))
@@ -429,6 +431,7 @@ func (a *agent) handleReconnectingPTY(ctx context.Context, rawID string, conn ne
429431
a.logger.Warn(ctx,"client sent reconnection token that isn't a uuid",slog.F("id",id),slog.Error(err))
430432
return
431433
}
434+
// Parse the initial terminal dimensions.
432435
height,err:=strconv.Atoi(idParts[1])
433436
iferr!=nil {
434437
a.logger.Warn(ctx,"client sent invalid height",slog.F("id",id),slog.F("height",idParts[1]))
@@ -454,41 +457,55 @@ func (a *agent) handleReconnectingPTY(ctx context.Context, rawID string, conn ne
454457
a.logger.Warn(ctx,"create reconnecting pty command",slog.Error(err))
455458
return
456459
}
457-
ptty,_,err:=pty.Start(cmd)
460+
cmd.Env=append(cmd.Env,"TERM=xterm-256color")
461+
462+
ptty,process,err:=pty.Start(cmd)
458463
iferr!=nil {
459464
a.logger.Warn(ctx,"start reconnecting pty command",slog.F("id",id))
460465
}
461466

467+
// Default to buffer 64KB.
468+
circularBuffer,err:=circbuf.NewBuffer(64*1024)
469+
iferr!=nil {
470+
a.logger.Warn(ctx,"create circular buffer",slog.Error(err))
471+
return
472+
}
473+
462474
a.closeMutex.Lock()
463475
a.connCloseWait.Add(1)
464476
a.closeMutex.Unlock()
477+
ctx,cancelFunc:=context.WithCancel(ctx)
465478
rpty=&reconnectingPTY{
466479
activeConns:make(map[string]net.Conn),
467480
ptty:ptty,
468-
timeout:time.NewTimer(a.reconnectingPTYTimeout),
469-
// Default to buffer 1MB.
470-
ringBuffer:ringbuffer.New(1<<20),
481+
// Timeouts created with an after func can be reset!
482+
timeout:time.AfterFunc(a.reconnectingPTYTimeout,cancelFunc),
483+
circularBuffer:circularBuffer,
471484
}
472485
a.reconnectingPTYs.Store(id,rpty)
473486
gofunc() {
474-
// Close if the inactive timeout occurs, or the context ends.
475-
select {
476-
case<-rpty.timeout.C:
477-
a.logger.Info(ctx,"killing reconnecting pty due to inactivity",slog.F("id",id))
478-
case<-ctx.Done():
479-
}
487+
// When the context has been completed either:
488+
// 1. The timeout completed.
489+
// 2. The parent context was cancelled.
490+
<-ctx.Done()
491+
_=process.Kill()
492+
}()
493+
gofunc() {
494+
// If the process dies randomly, we should
495+
// close the pty.
496+
_,_=process.Wait()
480497
rpty.Close()
481498
}()
482499
gofunc() {
483-
buffer:=make([]byte,32*1024)
500+
buffer:=make([]byte,1024)
484501
for {
485502
read,err:=rpty.ptty.Output().Read(buffer)
486503
iferr!=nil {
487-
rpty.Close()
504+
// When the PTY is closed, this is triggered.
488505
break
489506
}
490507
part:=buffer[:read]
491-
_,err=rpty.ringBuffer.Write(part)
508+
_,err=rpty.circularBuffer.Write(part)
492509
iferr!=nil {
493510
a.logger.Error(ctx,"reconnecting pty write buffer",slog.Error(err),slog.F("id",id))
494511
break
@@ -499,27 +516,56 @@ func (a *agent) handleReconnectingPTY(ctx context.Context, rawID string, conn ne
499516
}
500517
rpty.activeConnsMutex.Unlock()
501518
}
502-
// If we break from the loop, the reconnecting PTY ended.
519+
520+
// Cleanup the process, PTY, and delete it's
521+
// ID from memory.
522+
_=process.Kill()
523+
rpty.Close()
503524
a.reconnectingPTYs.Delete(id)
504525
a.connCloseWait.Done()
505526
}()
506527
}
528+
// Resize the PTY to initial height + width.
507529
err=rpty.ptty.Resize(uint16(height),uint16(width))
508530
iferr!=nil {
509531
// We can continue after this, it's not fatal!
510532
a.logger.Error(ctx,"resize reconnecting pty",slog.F("id",id),slog.Error(err))
511533
}
512-
513-
_,err=conn.Write(rpty.ringBuffer.Bytes())
534+
// Write any previously stored data for the TTY.
535+
_,err=conn.Write(rpty.circularBuffer.Bytes())
514536
iferr!=nil {
515537
a.logger.Warn(ctx,"write reconnecting pty buffer",slog.F("id",id),slog.Error(err))
516538
return
517539
}
518540
connectionID:=uuid.NewString()
541+
// Multiple connections to the same TTY are permitted.
542+
// This could easily be used for terminal sharing, but
543+
// we do it because it's a nice user experience to
544+
// copy/paste a terminal URL and have it _just work_.
519545
rpty.activeConnsMutex.Lock()
520546
rpty.activeConns[connectionID]=conn
521547
rpty.activeConnsMutex.Unlock()
548+
// Resetting this timeout prevents the PTY from exiting.
549+
rpty.timeout.Reset(a.reconnectingPTYTimeout)
550+
551+
heartbeat:=time.NewTimer(a.reconnectingPTYTimeout/2)
552+
deferheartbeat.Stop()
553+
gofunc() {
554+
// Keep updating the activity while this
555+
// connection is alive!
556+
for {
557+
select {
558+
case<-ctx.Done():
559+
return
560+
case<-heartbeat.C:
561+
}
562+
rpty.timeout.Reset(a.reconnectingPTYTimeout)
563+
}
564+
}()
522565
deferfunc() {
566+
// After this connection ends, remove it from
567+
// the PTYs active connections. If it isn't
568+
// removed, all PTY data will be sent to it.
523569
rpty.activeConnsMutex.Lock()
524570
delete(rpty.activeConns,connectionID)
525571
rpty.activeConnsMutex.Unlock()
@@ -579,17 +625,20 @@ type reconnectingPTY struct {
579625
activeConnsMutex sync.Mutex
580626
activeConnsmap[string]net.Conn
581627

582-
ringBuffer*ringbuffer.RingBuffer
583-
timeout*time.Timer
584-
ptty pty.PTY
628+
circularBuffer*circbuf.Buffer
629+
timeout*time.Timer
630+
pttypty.PTY
585631
}
586632

633+
// Close ends all connections to the reconnecting
634+
// PTY and clear the circular buffer.
587635
func (r*reconnectingPTY)Close() {
588636
r.activeConnsMutex.Lock()
589637
deferr.activeConnsMutex.Unlock()
590638
for_,conn:=ranger.activeConns {
591639
_=conn.Close()
592640
}
593641
_=r.ptty.Close()
594-
r.ringBuffer.Reset()
642+
r.circularBuffer.Reset()
643+
r.timeout.Stop()
595644
}

‎agent/agent_test.go

Lines changed: 8 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -133,7 +133,7 @@ func TestAgent(t *testing.T) {
133133

134134
t.Run("SFTP",func(t*testing.T) {
135135
t.Parallel()
136-
sshClient,err:=setupAgent(t, agent.Metadata{}).SSHClient()
136+
sshClient,err:=setupAgent(t, agent.Metadata{},0).SSHClient()
137137
require.NoError(t,err)
138138
client,err:=sftp.NewClient(sshClient)
139139
require.NoError(t,err)
@@ -170,7 +170,7 @@ func TestAgent(t *testing.T) {
170170
content:="somethingnice"
171171
setupAgent(t, agent.Metadata{
172172
StartupScript:"echo "+content+" > "+tempPath,
173-
})
173+
},0)
174174
vargotContentstring
175175
require.Eventually(t,func()bool {
176176
content,err:=os.ReadFile(tempPath)
@@ -193,7 +193,7 @@ func TestAgent(t *testing.T) {
193193

194194
t.Run("ReconnectingPTY",func(t*testing.T) {
195195
t.Parallel()
196-
conn:=setupAgent(t, agent.Metadata{})
196+
conn:=setupAgent(t, agent.Metadata{},0)
197197
id:=uuid.NewString()
198198
netConn,err:=conn.ReconnectingPTY(id,100,100)
199199
require.NoError(t,err)
@@ -231,7 +231,7 @@ func TestAgent(t *testing.T) {
231231
}
232232

233233
funcsetupSSHCommand(t*testing.T,beforeArgs []string,afterArgs []string)*exec.Cmd {
234-
agentConn:=setupAgent(t, agent.Metadata{})
234+
agentConn:=setupAgent(t, agent.Metadata{},0)
235235
listener,err:=net.Listen("tcp","127.0.0.1:0")
236236
require.NoError(t,err)
237237
gofunc() {
@@ -260,20 +260,21 @@ func setupSSHCommand(t *testing.T, beforeArgs []string, afterArgs []string) *exe
260260
}
261261

262262
funcsetupSSHSession(t*testing.T,options agent.Metadata)*ssh.Session {
263-
sshClient,err:=setupAgent(t,options).SSHClient()
263+
sshClient,err:=setupAgent(t,options,0).SSHClient()
264264
require.NoError(t,err)
265265
session,err:=sshClient.NewSession()
266266
require.NoError(t,err)
267267
returnsession
268268
}
269269

270-
funcsetupAgent(t*testing.T,metadata agent.Metadata)*agent.Conn {
270+
funcsetupAgent(t*testing.T,metadata agent.Metadata,ptyTimeout time.Duration)*agent.Conn {
271271
client,server:=provisionersdk.TransportPipe()
272272
closer:=agent.New(func(ctx context.Context,logger slog.Logger) (agent.Metadata,*peerbroker.Listener,error) {
273273
listener,err:=peerbroker.Listen(server,nil)
274274
returnmetadata,listener,err
275275
},&agent.Options{
276-
Logger:slogtest.Make(t,nil).Leveled(slog.LevelDebug),
276+
Logger:slogtest.Make(t,nil).Leveled(slog.LevelDebug),
277+
ReconnectingPTYTimeout:ptyTimeout,
277278
})
278279
t.Cleanup(func() {
279280
_=client.Close()

‎coderd/workspaceagents.go

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -375,7 +375,7 @@ func (api *api) workspaceAgentPTY(rw http.ResponseWriter, r *http.Request) {
375375
_=conn.Close(websocket.StatusNormalClosure,"ended")
376376
}()
377377
// Accept text connections, because it's more developer friendly.
378-
wsNetConn:=websocket.NetConn(r.Context(),conn,websocket.MessageText)
378+
wsNetConn:=websocket.NetConn(r.Context(),conn,websocket.MessageBinary)
379379
agentConn,err:=api.dialWorkspaceAgent(r,workspaceAgent.ID)
380380
iferr!=nil {
381381
return

‎codersdk/workspaceagents.go

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -368,7 +368,7 @@ func (c *Client) WorkspaceAgentReconnectingPTY(ctx context.Context, agentID, rec
368368
}
369369
returnnil,readBodyAsError(res)
370370
}
371-
returnwebsocket.NetConn(ctx,conn,websocket.MessageText),nil
371+
returnwebsocket.NetConn(ctx,conn,websocket.MessageBinary),nil
372372
}
373373

374374
func (c*Client)turnProxyDialer(ctx context.Context,httpClient*http.Client,pathstring) proxy.Dialer {

‎go.mod

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -43,6 +43,7 @@ require (
4343
cdr.dev/slogv1.4.1
4444
cloud.google.com/go/computev1.6.1
4545
github.com/AlecAivazis/survey/v2v2.3.4
46+
github.com/armon/circbufv0.0.0-20190214190532-5111143e8da2
4647
github.com/awalterschulze/gographvizv2.0.3+incompatible
4748
github.com/bgentry/speakeasyv0.1.0
4849
github.com/briandowns/spinnerv1.18.1
@@ -92,7 +93,6 @@ require (
9293
github.com/pkg/sftpv1.13.4
9394
github.com/quasilyte/go-ruleguard/dslv0.3.19
9495
github.com/robfig/cron/v3v3.0.1
95-
github.com/smallnest/ringbufferv0.0.0-20210227121335-0a58434b36f2
9696
github.com/spf13/cobrav1.4.0
9797
github.com/spf13/pflagv1.0.5
9898
github.com/stretchr/testifyv1.7.1

‎go.sum

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -182,6 +182,8 @@ github.com/apparentlymart/go-textseg v1.0.0/go.mod h1:z96Txxhf3xSFMPmb5X/1W05FF/
182182
github.com/apparentlymart/go-textseg/v13v13.0.0 h1:Y+KvPE1NYz0xl601PVImeQfFyEy6iT90AvPUL1NNfNw=
183183
github.com/apparentlymart/go-textseg/v13v13.0.0/go.mod h1:ZK2fH7c4NqDTLtiYLvIkEghdlcqw7yxLeM89kiTRPUo=
184184
github.com/armon/circbufv0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
185+
github.com/armon/circbufv0.0.0-20190214190532-5111143e8da2 h1:7Ip0wMmLHLRJdrloDxZfhMm0xrLXZS8+COSu2bXmEQs=
186+
github.com/armon/circbufv0.0.0-20190214190532-5111143e8da2/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
185187
github.com/armon/consul-apiv0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
186188
github.com/armon/go-metricsv0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
187189
github.com/armon/go-metricsv0.3.0/go.mod h1:zXjbSimjXTd7vOpY8B0/2LpvNvDoXBuplAD+gJD3GYs=
@@ -1493,8 +1495,6 @@ github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrf
14931495
github.com/sirupsen/logrusv1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
14941496
github.com/sirupsen/logrusv1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
14951497
github.com/sirupsen/logrusv1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
1496-
github.com/smallnest/ringbufferv0.0.0-20210227121335-0a58434b36f2 h1:co1YnJJ6rDvcodJzcXObchJMfHclIROMulsWObuNfTY=
1497-
github.com/smallnest/ringbufferv0.0.0-20210227121335-0a58434b36f2/go.mod h1:mXcZNMJHswhQDDJZIjdtJoG97JIwIa/HdcHNM3w15T0=
14981498
github.com/smartystreets/assertionsv0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
14991499
github.com/smartystreets/assertionsv0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
15001500
github.com/smartystreets/go-aws-authv0.0.0-20180515143844-0c1422d1fdb9/go.mod h1:SnhjPscd9TpLiy1LpzGSKh3bXCfxxXuqd9xmQJy3slM=

‎pty/pty_other.go

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -46,8 +46,8 @@ func (p *otherPty) Resize(height uint16, width uint16) error {
4646
p.mutex.Lock()
4747
deferp.mutex.Unlock()
4848
returnpty.Setsize(p.pty,&pty.Winsize{
49-
Rows:width,
50-
Cols:height,
49+
Rows:height,
50+
Cols:width,
5151
})
5252
}
5353

‎site/package.json

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -42,6 +42,10 @@
4242
"react-router-dom":"6.3.0",
4343
"swr":"1.2.2",
4444
"xstate":"4.31.0",
45+
"xterm-addon-fit":"^0.5.0",
46+
"xterm-addon-web-links":"^0.5.1",
47+
"xterm-addon-webgl":"^0.11.4",
48+
"xterm-for-react":"^1.0.4",
4549
"yup":"0.32.11"
4650
},
4751
"devDependencies": {

‎site/src/AppRouter.tsx

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -17,6 +17,7 @@ import { SettingsPage } from "./pages/SettingsPage/SettingsPage"
1717
import{CreateWorkspacePage}from"./pages/TemplatesPages/OrganizationPage/TemplatePage/CreateWorkspacePage"
1818
import{TemplatePage}from"./pages/TemplatesPages/OrganizationPage/TemplatePage/TemplatePage"
1919
import{TemplatesPage}from"./pages/TemplatesPages/TemplatesPage"
20+
import{TerminalPage}from"./pages/TerminalPage/TerminalPage"
2021
import{UsersPage}from"./pages/UsersPage/UsersPage"
2122
import{WorkspacePage}from"./pages/WorkspacesPage/WorkspacesPage"
2223

@@ -115,6 +116,19 @@ export const AppRouter: React.FC = () => (
115116
<Routepath="linked-accounts"element={<LinkedAccountsPage/>}/>
116117
</Route>
117118

119+
<Routepath=":username">
120+
<Routepath=":workspace">
121+
<Route
122+
path="terminal"
123+
element={
124+
<RequireAuth>
125+
<TerminalPage/>
126+
</RequireAuth>
127+
}
128+
/>
129+
</Route>
130+
</Route>
131+
118132
{/* Using path="*"" means "match anything", so this route
119133
acts like a catch-all for URLs that we don't have explicit
120134
routes for. */}

‎site/src/api/index.ts

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -91,7 +91,9 @@ export const getOrganizations = async (): Promise<Types.Organization[]> => {
9191
}
9292

9393
exportconstgetWorkspace=async(organizationID:string,workspaceName:string):Promise<Types.Workspace>=>{
94-
constresponse=awaitaxios.get<Types.Workspace>(`/api/v2/organizations/${organizationID}/workspaces/me/${workspaceName}`)
94+
constresponse=awaitaxios.get<Types.Workspace>(
95+
`/api/v2/organizations/${organizationID}/workspaces/me/${workspaceName}`,
96+
)
9597
returnresponse.data
9698
}
9799

‎site/src/api/types.ts

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -73,7 +73,7 @@ export interface Workspace {
7373

7474
exportinterfaceWorkspaceResource{
7575
id:string
76-
agents:WorkspaceAgent[]
76+
agents?:WorkspaceAgent[]
7777
}
7878

7979
exportinterfaceWorkspaceAgent{
@@ -116,7 +116,7 @@ export interface UpdateProfileRequest {
116116
}
117117

118118
exportinterfaceReconnectingPTYRequest{
119-
readonlydata:string
120-
readonlyheight:number
121-
readonlywidth:number
119+
readonlydata?:string
120+
readonlyheight?:number
121+
readonlywidth?:number
122122
}

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