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made zmodem xfers cancelable

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This commit is contained in:
Eugene Pankov 2020-02-16 22:57:54 +01:00
parent 58d2590495
commit 2d357d0ed2
5 changed files with 139 additions and 66 deletions
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2
terminus-core/src/components/baseTab.component.ts
View file

@ -38,7 +38,7 @@ export abstract class BaseTabComponent {
*/
color: string|null = null
protected hasFocus = false
hasFocus = false
/**
* Ping this if your recovery state has been changed and you want

15
terminus-core/src/services/hotkeys.service.ts
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@ -1,4 +1,5 @@
import { Injectable, Inject, NgZone, EventEmitter } from '@angular/core'
import { Observable, Subject } from 'rxjs'
import { HotkeyDescription, HotkeyProvider } from '../api/hotkeyProvider'
import { stringifyKeySequence } from './hotkeys.util'
import { ConfigService } from '../services/config.service'
@ -20,8 +21,17 @@ interface EventBufferEntry {
@Injectable({ providedIn: 'root' })
export class HotkeysService {
key = new EventEmitter<KeyboardEvent>()
/** @hidden */
matchedHotkey = new EventEmitter<string>()
/**
* Fired for each recognized hotkey
*/
get hotkey$ (): Observable<string> { return this._hotkey }
globalHotkey = new EventEmitter<void>()
private _hotkey = new Subject<string>()
private currentKeystrokes: EventBufferEntry[] = []
private disabledLevel = 0
private hotkeyDescriptions: HotkeyDescription[] = []
@ -49,6 +59,9 @@ export class HotkeysService {
this.getHotkeyDescriptions().then(hotkeys => {
this.hotkeyDescriptions = hotkeys
})
// deprecated
this.hotkey$.subscribe(h => this.matchedHotkey.emit(h))
}
/**
@ -71,7 +84,7 @@ export class HotkeysService {
const matched = this.getCurrentFullyMatchedHotkey()
if (matched) {
console.log('Matched hotkey', matched)
this.matchedHotkey.emit(matched)
this._hotkey.next(matched)
this.clearCurrentKeystrokes()
}
})

23
terminus-terminal/src/api/decorator.ts
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@ -1,16 +1,35 @@
import { Subscription } from 'rxjs'
import { BaseTerminalTabComponent } from './baseTerminalTab.component'
/**
* Extend to automatically run actions on new terminals
*/
export abstract class TerminalDecorator {
private smartSubscriptions = new Map<BaseTerminalTabComponent, Subscription[]>()
/**
* Called when a new terminal tab starts
*/
attach (terminal: BaseTerminalTabComponent): void { } // eslint-disable-line
/**
* Called before a terminal tab is destroyed
* Called before a terminal tab is destroyed.
* Make sure to call super()
*/
detach (terminal: BaseTerminalTabComponent): void { } // eslint-disable-line
detach (terminal: BaseTerminalTabComponent): void {
for (const s of this.smartSubscriptions.get(terminal) || []) {
s.unsubscribe()
}
this.smartSubscriptions.delete(terminal)
}
/**
* Automatically cancel @subscription once detached from @terminal
*/
protected subscribeUntilDetached (terminal: BaseTerminalTabComponent, subscription: Subscription) {
if (!this.smartSubscriptions.has(terminal)) {
this.smartSubscriptions.set(terminal, [])
}
this.smartSubscriptions.get(terminal)?.push(subscription)
}
}

29
terminus-terminal/src/features/pathDrop.ts
View file

@ -1,4 +1,3 @@
import { Subscription } from 'rxjs'
import { Injectable } from '@angular/core'
import { TerminalDecorator } from '../api/decorator'
import { TerminalTabComponent } from '../components/terminalTab.component'
@ -6,21 +5,17 @@ import { TerminalTabComponent } from '../components/terminalTab.component'
/** @hidden */
@Injectable()
export class PathDropDecorator extends TerminalDecorator {
private subscriptions: Subscription[] = []
attach (terminal: TerminalTabComponent): void {
setTimeout(() => {
this.subscriptions = [
terminal.frontend.dragOver$.subscribe(event => {
event.preventDefault()
}),
terminal.frontend.drop$.subscribe(event => {
for (const file of event.dataTransfer!.files as any) {
this.injectPath(terminal, file.path)
}
event.preventDefault()
}),
]
this.subscribeUntilDetached(terminal, terminal.frontend.dragOver$.subscribe(event => {
event.preventDefault()
}))
this.subscribeUntilDetached(terminal, terminal.frontend.drop$.subscribe(event => {
for (const file of event.dataTransfer!.files as any) {
this.injectPath(terminal, file.path)
}
event.preventDefault()
}))
})
}
@ -31,10 +26,4 @@ export class PathDropDecorator extends TerminalDecorator {
path = path.replace(/\\/g, '\\\\')
terminal.sendInput(path + ' ')
}
detach (_terminal: TerminalTabComponent): void {
for (const s of this.subscriptions) {
s.unsubscribe()
}
}
}

136
terminus-terminal/src/features/zmodem.ts
View file

@ -1,29 +1,33 @@
/* eslint-disable @typescript-eslint/camelcase */
import colors from 'ansi-colors'
import * as ZModem from 'zmodem.js'
import * as fs from 'fs'
import * as path from 'path'
import { Subscription } from 'rxjs'
import { Observable } from 'rxjs'
import { filter } from 'rxjs/operators'
import { Injectable } from '@angular/core'
import { TerminalDecorator } from '../api/decorator'
import { TerminalTabComponent } from '../components/terminalTab.component'
import { LogService, Logger, ElectronService, HostAppService } from 'terminus-core'
import { LogService, Logger, ElectronService, HostAppService, HotkeysService } from 'terminus-core'
const SPACER = ' '
/** @hidden */
@Injectable()
export class ZModemDecorator extends TerminalDecorator {
private subscriptions: Subscription[] = []
private logger: Logger
private activeSession: any = null
private cancelEvent: Observable<any>
constructor (
log: LogService,
hotkeys: HotkeysService,
private electron: ElectronService,
private hostApp: HostAppService,
) {
super()
this.logger = log.create('zmodem')
this.cancelEvent = hotkeys.hotkey$.pipe(filter(x => x === 'ctrl-c'))
}
attach (terminal: TerminalTabComponent): void {
@ -47,27 +51,27 @@ export class ZModemDecorator extends TerminalDecorator {
},
})
setTimeout(() => {
this.subscriptions = [
terminal.session.binaryOutput$.subscribe(data => {
const chunkSize = 1024
for (let i = 0; i <= Math.floor(data.length / chunkSize); i++) {
try {
sentry.consume(data.subarray(i * chunkSize, (i + 1) * chunkSize))
} catch (e) {
this.logger.error('protocol error', e)
this.activeSession.abort()
this.activeSession = null
terminal.enablePassthrough = true
return
}
this.subscribeUntilDetached(terminal, terminal.session.binaryOutput$.subscribe(data => {
const chunkSize = 1024
for (let i = 0; i <= Math.floor(data.length / chunkSize); i++) {
try {
sentry.consume(data.subarray(i * chunkSize, (i + 1) * chunkSize))
} catch (e) {
this.logger.error('protocol error', e)
this.activeSession.abort()
this.activeSession = null
terminal.enablePassthrough = true
return
}
}),
]
}
}))
})
}
async process (terminal, detection) {
this.showMessage(terminal, '[Terminus] ZModem session started')
this.showMessage(terminal, colors.bgBlue.black(' ZMODEM ') + ' Session started')
this.showMessage(terminal, '------------------------')
const zsession = detection.confirm()
this.activeSession = zsession
this.logger.info('new session', zsession)
@ -94,7 +98,7 @@ export class ZModemDecorator extends TerminalDecorator {
await zsession.close()
} else {
zsession.on('offer', xfer => {
this.receiveFile(terminal, xfer)
this.receiveFile(terminal, xfer, zsession)
})
zsession.start()
@ -104,15 +108,12 @@ export class ZModemDecorator extends TerminalDecorator {
}
}
detach (_terminal: TerminalTabComponent): void {
for (const s of this.subscriptions) {
s.unsubscribe()
}
}
private async receiveFile (terminal, xfer) {
const details = xfer.get_details()
this.showMessage(terminal, `🟡 Offered ${details.name}`, true)
private async receiveFile (terminal, xfer, zsession) {
const details: {
name: string,
size: number,
} = xfer.get_details()
this.showMessage(terminal, colors.bgYellow.black(' Offered ') + ' ' + details.name, true)
this.logger.info('offered', xfer)
const result = await this.electron.dialog.showSaveDialog(
this.hostApp.getWindow(),
@ -121,20 +122,48 @@ export class ZModemDecorator extends TerminalDecorator {
},
)
if (!result.filePath) {
this.showMessage(terminal, `🔴 Rejected ${details.name}`)
this.showMessage(terminal, colors.bgRed.black(' Rejected ') + ' ' + details.name)
xfer.skip()
return
}
const stream = fs.createWriteStream(result.filePath)
let bytesSent = 0
await xfer.accept({
on_input: chunk => {
stream.write(Buffer.from(chunk))
bytesSent += chunk.length
this.showMessage(terminal, `🟡 Receiving ${details.name}: ${Math.round(100 * bytesSent / details.size)}%`, true)
},
let canceled = false
const cancelSubscription = this.cancelEvent.subscribe(() => {
if (terminal.hasFocus) {
try {
zsession._skip()
} catch {}
canceled = true
}
})
this.showMessage(terminal, `✅ Received ${details.name}`)
try {
await Promise.race([
xfer.accept({
on_input: chunk => {
if (canceled) {
return
}
stream.write(Buffer.from(chunk))
bytesSent += chunk.length
this.showMessage(terminal, colors.bgYellow.black(' ' + Math.round(100 * bytesSent / details.size).toString().padStart(3, ' ') + '% ') + ' ' + details.name, true)
},
}),
this.cancelEvent.toPromise(),
])
if (canceled) {
this.showMessage(terminal, colors.bgRed.black(' Canceled ') + ' ' + details.name)
} else {
this.showMessage(terminal, colors.bgGreen.black(' Received ') + ' ' + details.name)
}
} catch {
this.showMessage(terminal, colors.bgRed.black(' Error ') + ' ' + details.name)
}
cancelSubscription.unsubscribe()
stream.end()
}
@ -149,23 +178,46 @@ export class ZModemDecorator extends TerminalDecorator {
bytes_remaining: stat.size,
}
this.logger.info('offering', offer)
this.showMessage(terminal, `🟡 Offering ${offer.name}`, true)
this.showMessage(terminal, colors.bgYellow.black(' Offered ') + ' ' + offer.name, true)
const xfer = await zsession.send_offer(offer)
if (xfer) {
let bytesSent = 0
let canceled = false
const stream = fs.createReadStream(filePath)
const cancelSubscription = this.cancelEvent.subscribe(() => {
if (terminal.hasFocus) {
canceled = true
}
})
stream.on('data', chunk => {
if (canceled) {
stream.close()
return
}
xfer.send(chunk)
bytesSent += chunk.length
this.showMessage(terminal, `🟡 Sending ${offer.name}: ${Math.round(100 * bytesSent / offer.size)}%`, true)
this.showMessage(terminal, colors.bgYellow.black(' ' + Math.round(100 * bytesSent / offer.size).toString().padStart(3, ' ') + '% ') + offer.name, true)
})
await new Promise(resolve => stream.on('end', resolve))
await Promise.race([
new Promise(resolve => stream.on('end', resolve)),
this.cancelEvent.toPromise(),
])
await xfer.end()
if (canceled) {
this.showMessage(terminal, colors.bgRed.black(' Canceled ') + ' ' + offer.name)
} else {
this.showMessage(terminal, colors.bgGreen.black(' Sent ') + ' ' + offer.name)
}
stream.close()
this.showMessage(terminal, `✅ Sent ${offer.name}`)
cancelSubscription.unsubscribe()
} else {
this.showMessage(terminal, `🔴 Other side rejected ${offer.name}`)
this.showMessage(terminal, colors.bgRed.black(' Rejected ') + ' ' + offer.name)
this.logger.warn('rejected by the other side')
}
}