File size: 8,705 Bytes
89a2873 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | import { Pty } from "@opencode-ai/core/pty"
import { PtyProtocol } from "@opencode-ai/core/pty/protocol"
import { PtyTicket } from "@opencode-ai/core/pty/ticket"
import { Location } from "@opencode-ai/core/location"
import { Effect, Queue } from "effect"
import { HttpServerRequest, HttpServerResponse } from "effect/unstable/http"
import { HttpApiBuilder, HttpApiSchema } from "effect/unstable/httpapi"
import * as Socket from "effect/unstable/socket/Socket"
import { Api } from "../api"
import { CorsConfig, isAllowedRequestOrigin } from "../cors"
import { ForbiddenError, PtyNotFoundError } from "@opencode-ai/protocol/errors"
import {
PTY_CONNECT_TICKET_QUERY,
PTY_CONNECT_TOKEN_HEADER,
PTY_CONNECT_TOKEN_HEADER_VALUE,
} from "@opencode-ai/protocol/groups/pty"
import { response } from "../location"
import { PtyEnvironment } from "../pty-environment"
const ticketScope = Effect.gen(function* () {
const location = yield* Location.Service
return { directory: location.directory as string, workspaceID: location.workspaceID }
})
export const PtyHandler = HttpApiBuilder.group(Api, "server.pty", (handlers) =>
Effect.gen(function* () {
const tickets = yield* PtyTicket.Service
const cors = yield* CorsConfig
const environment = yield* PtyEnvironment.Service
return handlers
.handle(
"pty.list",
Effect.fn(function* () {
return yield* response((yield* Pty.Service).list())
}),
)
.handle(
"pty.create",
Effect.fn(function* (ctx) {
const pty = yield* Pty.Service
const location = yield* Location.Service
const cwd = ctx.payload.cwd || location.directory
return yield* response(
pty.create({
...ctx.payload,
args: ctx.payload.args ? [...ctx.payload.args] : undefined,
cwd,
env: {
...ctx.payload.env,
...(yield* environment.get({ directory: location.directory, cwd })),
},
}),
)
}),
)
.handle(
"pty.get",
Effect.fn(function* (ctx) {
const pty = yield* Pty.Service
return yield* response(
pty.get(ctx.params.ptyID).pipe(
Effect.catchTag(
"Pty.NotFoundError",
() =>
new PtyNotFoundError({
ptyID: ctx.params.ptyID,
message: `PTY session not found: ${ctx.params.ptyID}`,
}),
),
),
)
}),
)
.handle(
"pty.update",
Effect.fn(function* (ctx) {
const pty = yield* Pty.Service
return yield* response(
pty
.update(ctx.params.ptyID, {
...ctx.payload,
size: ctx.payload.size ? { ...ctx.payload.size } : undefined,
})
.pipe(
Effect.catchTag(
"Pty.NotFoundError",
() =>
new PtyNotFoundError({
ptyID: ctx.params.ptyID,
message: `PTY session not found: ${ctx.params.ptyID}`,
}),
),
),
)
}),
)
.handle(
"pty.remove",
Effect.fn(function* (ctx) {
const pty = yield* Pty.Service
yield* pty.remove(ctx.params.ptyID).pipe(
Effect.catchTag(
"Pty.NotFoundError",
() =>
new PtyNotFoundError({
ptyID: ctx.params.ptyID,
message: `PTY session not found: ${ctx.params.ptyID}`,
}),
),
)
return HttpApiSchema.NoContent.make()
}),
)
.handle(
"pty.connectToken",
Effect.fn(function* (ctx) {
const request = yield* HttpServerRequest.HttpServerRequest
// The custom header forces a CORS preflight, so cross-origin browser pages cannot
// mint tickets without passing the server's origin policy.
if (
request.headers[PTY_CONNECT_TOKEN_HEADER] !== PTY_CONNECT_TOKEN_HEADER_VALUE ||
!isAllowedRequestOrigin(request.headers.origin, request.headers.host, cors)
)
return yield* new ForbiddenError({ message: "Invalid PTY connect token request" })
const pty = yield* Pty.Service
yield* pty.get(ctx.params.ptyID).pipe(
Effect.catchTag(
"Pty.NotFoundError",
() =>
new PtyNotFoundError({
ptyID: ctx.params.ptyID,
message: `PTY session not found: ${ctx.params.ptyID}`,
}),
),
)
return yield* response(tickets.issue({ ptyID: ctx.params.ptyID, ...(yield* ticketScope) }))
}),
)
.handleRaw(
"pty.connect",
Effect.fn("PtyHandler.connect")(function* (ctx) {
const pty = yield* Pty.Service
const exists = yield* pty.get(ctx.params.ptyID).pipe(
Effect.as(true),
Effect.catchTag("Pty.NotFoundError", () => Effect.succeed(false)),
)
if (!exists) return HttpServerResponse.empty({ status: 404 })
const url = new URL(ctx.request.url, "http://localhost")
const ticket = url.searchParams.get(PTY_CONNECT_TICKET_QUERY)
if (ticket) {
const valid = isAllowedRequestOrigin(ctx.request.headers.origin, ctx.request.headers.host, cors)
? yield* tickets.consume({ ticket, ptyID: ctx.params.ptyID, ...(yield* ticketScope) })
: false
if (!valid) return HttpServerResponse.empty({ status: 403 })
}
const parsedCursor = url.searchParams.get("cursor")
const cursorNumber = parsedCursor === null ? undefined : Number(parsedCursor)
const cursor =
cursorNumber !== undefined && Number.isSafeInteger(cursorNumber) && cursorNumber >= -1
? cursorNumber
: undefined
const socket = yield* Effect.orDie(ctx.request.upgrade)
const write = yield* socket.writer
const closeAccepted = (event: Socket.CloseEvent) =>
socket
.runRaw(() => Effect.void, { onOpen: write(event).pipe(Effect.catch(() => Effect.void)) })
.pipe(
Effect.timeout("1 second"),
Effect.catchReason("SocketError", "SocketCloseError", () => Effect.void),
Effect.catch(() => Effect.void),
)
// Outbound frames flow through one queue drained by a single writer so replay, live
// output, and the close frame keep their order.
// TODO: Integrate graceful-shutdown socket tracking before clients migrate to this route.
const outbox = yield* Queue.unbounded<string | Uint8Array | Socket.CloseEvent>()
const attachment = yield* pty
.attach(ctx.params.ptyID, {
cursor,
onData: (chunk) => Queue.offerUnsafe(outbox, chunk),
onEnd: () => Queue.offerUnsafe(outbox, new Socket.CloseEvent(1000)),
})
.pipe(
Effect.catchTags({
"Pty.NotFoundError": () =>
closeAccepted(new Socket.CloseEvent(4404, "session not found")).pipe(Effect.as(undefined)),
"Pty.ExitedError": () =>
closeAccepted(new Socket.CloseEvent(4404, "session exited")).pipe(Effect.as(undefined)),
}),
)
if (!attachment) return HttpServerResponse.empty()
for (const chunk of PtyProtocol.chunks(attachment.replay)) Queue.offerUnsafe(outbox, chunk)
Queue.offerUnsafe(outbox, PtyProtocol.metaFrame(attachment.cursor))
attachment.activate()
const drain = Effect.gen(function* () {
while (true) {
const item = yield* Queue.take(outbox)
yield* write(item)
if (item instanceof Socket.CloseEvent) return
}
})
yield* Effect.race(
drain,
socket.runRaw((message) => {
const decoded = PtyProtocol.decodeInput(message)
if (decoded !== undefined) attachment.write(decoded)
}),
).pipe(
Effect.catchReason("SocketError", "SocketCloseError", () => Effect.void),
Effect.ensuring(Effect.sync(() => attachment.detach())),
Effect.orDie,
)
return HttpServerResponse.empty()
}),
)
}),
)
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