Fix : Add custom to model selector

This commit is contained in:
decolua
2026-03-11 11:59:07 +07:00
parent a501c05969
commit d9dad5bcf3
8 changed files with 699 additions and 451 deletions
+349 -219
View File
@@ -5,12 +5,10 @@ import {
parseConnectRPCFrame,
extractTextFromResponse
} from "../utils/cursorProtobuf.js";
import { buildCursorHeaders } from "../utils/cursorChecksum.js";
import { estimateUsage } from "../utils/usageTracking.js";
import { FORMATS } from "../translator/formats.js";
import { buildCursorRequest } from "../translator/request/openai-to-cursor.js";
import { proxyAwareFetch } from "../utils/proxyFetch.js";
import crypto from "crypto";
import { v5 as uuidv5 } from "uuid";
import zlib from "zlib";
// Detect cloud environment
@@ -37,18 +35,50 @@ const COMPRESS_FLAG = {
GZIP_TRAILER: 0x03
};
const CURSOR_STREAM_DEBUG = process.env.CURSOR_STREAM_DEBUG === "1";
const debugLog = (...args) => {
if (CURSOR_STREAM_DEBUG) console.log(...args);
};
function decompressPayload(payload, flags) {
// ConnectRPC trailer frame (flags & 0x02) - contains status JSON, not compressed data
if (flags & COMPRESS_FLAG.TRAILER) {
return payload;
// Check if payload is JSON error (starts with {"error")
if (payload.length > 10 && payload[0] === 0x7b && payload[1] === 0x22) {
try {
const text = payload.toString("utf-8");
if (text.startsWith('{"error"')) {
debugLog(`[DECOMPRESS] Detected JSON error, skipping decompression`);
return payload;
}
} catch {}
}
if (flags === COMPRESS_FLAG.GZIP) {
if (
flags === COMPRESS_FLAG.GZIP ||
flags === COMPRESS_FLAG.TRAILER ||
flags === COMPRESS_FLAG.GZIP_TRAILER
) {
// Primary: try gzip decompression (standard gzip header 0x1f 0x8b)
try {
return zlib.gunzipSync(payload);
} catch (err) {
console.log(`[DECOMPRESS ERROR] flags=${flags}, payloadSize=${payload.length}, error=${err.message}`);
return payload;
} catch (gzipErr) {
// Fallback: TRAILER and GZIP_TRAILER frames sometimes use raw zlib deflate format
try {
return zlib.inflateSync(payload);
} catch (deflateErr) {
// Last resort: try raw deflate (no zlib header)
try {
return zlib.inflateRawSync(payload);
} catch (rawErr) {
debugLog(
`[DECOMPRESS ERROR] flags=${flags}, payloadSize=${payload.length}, gzip=${gzipErr.message}, deflate=${deflateErr.message}, raw=${rawErr.message}`
);
debugLog(
`[DECOMPRESS ERROR] First 50 bytes (hex):`,
payload.slice(0, 50).toString("hex")
);
return payload;
}
}
}
}
return payload;
@@ -83,46 +113,6 @@ export class CursorExecutor extends BaseExecutor {
return `${this.config.baseUrl}${this.config.chatPath}`;
}
// Jyh cipher checksum for Cursor API authentication
generateChecksum(machineId) {
const timestamp = Math.floor(Date.now() / 1000000);
const byteArray = new Uint8Array([
(timestamp >> 40) & 0xFF,
(timestamp >> 32) & 0xFF,
(timestamp >> 24) & 0xFF,
(timestamp >> 16) & 0xFF,
(timestamp >> 8) & 0xFF,
timestamp & 0xFF
]);
let t = 165;
for (let i = 0; i < byteArray.length; i++) {
byteArray[i] = ((byteArray[i] ^ t) + (i % 256)) & 0xFF;
t = byteArray[i];
}
const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
let encoded = "";
for (let i = 0; i < byteArray.length; i += 3) {
const a = byteArray[i];
const b = i + 1 < byteArray.length ? byteArray[i + 1] : 0;
const c = i + 2 < byteArray.length ? byteArray[i + 2] : 0;
encoded += alphabet[a >> 2];
encoded += alphabet[((a & 3) << 4) | (b >> 4)];
if (i + 1 < byteArray.length) {
encoded += alphabet[((b & 15) << 2) | (c >> 6)];
}
if (i + 2 < byteArray.length) {
encoded += alphabet[c & 63];
}
}
return `${encoded}${machineId}`;
}
buildHeaders(credentials) {
const accessToken = credentials.accessToken;
const machineId = credentials.providerSpecificData?.machineId;
@@ -132,34 +122,14 @@ export class CursorExecutor extends BaseExecutor {
throw new Error("Machine ID is required for Cursor API");
}
const cleanToken = accessToken.includes("::") ? accessToken.split("::")[1] : accessToken;
return {
"authorization": `Bearer ${cleanToken}`,
"connect-accept-encoding": "gzip",
"connect-protocol-version": "1",
"content-type": "application/connect+proto",
"user-agent": "connect-es/1.6.1",
"x-amzn-trace-id": `Root=${crypto.randomUUID()}`,
"x-client-key": crypto.createHash("sha256").update(cleanToken).digest("hex"),
"x-cursor-checksum": this.generateChecksum(machineId),
"x-cursor-client-version": "2.3.41",
"x-cursor-client-type": "ide",
"x-cursor-client-os": process.platform === "win32" ? "windows" : process.platform === "darwin" ? "macos" : "linux",
"x-cursor-client-arch": process.arch === "arm64" ? "aarch64" : "x64",
"x-cursor-client-device-type": "desktop",
"x-cursor-config-version": crypto.randomUUID(),
"x-cursor-timezone": Intl.DateTimeFormat().resolvedOptions().timeZone || "UTC",
"x-ghost-mode": ghostMode ? "true" : "false",
"x-request-id": crypto.randomUUID(),
"x-session-id": uuidv5(cleanToken, uuidv5.DNS),
};
return buildCursorHeaders(accessToken, machineId, ghostMode);
}
transformRequest(model, body, stream, credentials) {
const translatedBody = buildCursorRequest(model, body, stream, credentials);
const messages = translatedBody.messages || [];
const tools = translatedBody.tools || body.tools || [];
// Messages are already translated by chatCore (claude→openai→cursor)
// Do NOT call buildCursorRequest again — double-translation drops tool_results
const messages = body.messages || [];
const tools = body.tools || [];
const reasoningEffort = body.reasoning_effort || null;
return generateCursorBody(messages, model, tools, reasoningEffort);
}
@@ -282,53 +252,87 @@ export class CursorExecutor extends BaseExecutor {
let totalContent = "";
const toolCalls = [];
const toolCallsMap = new Map(); // Track streaming tool calls by ID
const finalizedIds = new Set();
let frameCount = 0;
debugLog(`[CURSOR BUFFER] Total length: ${buffer.length} bytes`);
while (offset < buffer.length) {
if (offset + 5 > buffer.length) break;
if (offset + 5 > buffer.length) {
debugLog(
`[CURSOR BUFFER] Reached end, offset=${offset}, remaining=${buffer.length - offset}`
);
break;
}
const flags = buffer[offset];
const length = buffer.readUInt32BE(offset + 1);
if (offset + 5 + length > buffer.length) break;
debugLog(
`[CURSOR BUFFER] Frame ${frameCount + 1}: flags=0x${flags.toString(16).padStart(2, "0")}, length=${length}`
);
if (offset + 5 + length > buffer.length) {
debugLog(
`[CURSOR BUFFER] Incomplete frame, offset=${offset}, length=${length}, buffer.length=${buffer.length}`
);
break;
}
let payload = buffer.slice(offset + 5, offset + 5 + length);
offset += 5 + length;
frameCount++;
// Stop at ConnectRPC trailer frame (end of response, anything after is a separate response)
if (flags & COMPRESS_FLAG.TRAILER) {
break;
payload = decompressPayload(payload, flags);
if (!payload) {
debugLog(`[CURSOR BUFFER] Frame ${frameCount}: decompression failed, skipping`);
continue;
}
payload = decompressPayload(payload, flags);
if (!payload) continue;
try {
const text = payload.toString("utf-8");
if (text.startsWith("{") && text.includes('"error"')) {
return createErrorResponse(JSON.parse(text));
}
} catch {}
// Check for JSON error frames (byte guard: skip toString on non-JSON frames)
if (payload.length > 0 && payload[0] === 0x7b) {
try {
const text = payload.toString("utf-8");
if (text.includes('"error"')) {
const hasContent = totalContent || toolCallsMap.size > 0;
debugLog(
`[CURSOR BUFFER] Error frame (hasContent=${hasContent}): ${text.slice(0, 500)}`
);
if (hasContent) {
break;
}
return createErrorResponse(JSON.parse(text));
}
} catch {}
}
const result = extractTextFromResponse(new Uint8Array(payload));
debugLog(`[CURSOR DECODED] Frame ${frameCount}:`, result);
if (result.error) {
return new Response(JSON.stringify({
error: {
message: result.error,
type: "rate_limit_error",
code: "rate_limited"
const hasContent = totalContent || toolCallsMap.size > 0;
debugLog(`[CURSOR BUFFER] Decoded error (hasContent=${hasContent}): ${result.error}`);
if (hasContent) {
break;
}
return new Response(
JSON.stringify({
error: {
message: result.error,
type: "rate_limit_error",
code: "rate_limited"
}
}),
{
status: HTTP_STATUS.RATE_LIMITED,
headers: { "Content-Type": "application/json" }
}
}), {
status: HTTP_STATUS.RATE_LIMITED,
headers: { "Content-Type": "application/json" }
});
);
}
if (result.toolCall) {
const tc = result.toolCall;
if (toolCallsMap.has(tc.id)) {
// Accumulate arguments for existing tool call
const existing = toolCallsMap.get(tc.id);
@@ -338,10 +342,11 @@ export class CursorExecutor extends BaseExecutor {
// New tool call
toolCallsMap.set(tc.id, { ...tc });
}
// Push to final array when isLast is true
if (tc.isLast) {
const finalToolCall = toolCallsMap.get(tc.id);
finalizedIds.add(tc.id);
toolCalls.push({
id: finalToolCall.id,
type: finalToolCall.type,
@@ -352,14 +357,19 @@ export class CursorExecutor extends BaseExecutor {
});
}
}
if (result.text) totalContent += result.text;
}
debugLog(
`[CURSOR BUFFER] Parsed ${frameCount} frames, toolCallsMap size: ${toolCallsMap.size}, finalized toolCalls: ${toolCalls.length}`
);
// Finalize all remaining tool calls in map (in case stream ended without isLast=true)
for (const [id, tc] of toolCallsMap.entries()) {
// Check if already in final array
if (!toolCalls.find(t => t.id === id)) {
if (!finalizedIds.has(id)) {
debugLog(`[CURSOR BUFFER] Finalizing incomplete tool call: ${id}, isLast=${tc.isLast}`);
toolCalls.push({
id: tc.id,
type: tc.type,
@@ -371,6 +381,8 @@ export class CursorExecutor extends BaseExecutor {
}
}
debugLog(`[CURSOR BUFFER] Final toolCalls count: ${toolCalls.length}`);
const message = {
role: "assistant",
@@ -411,176 +423,294 @@ export class CursorExecutor extends BaseExecutor {
let totalContent = "";
const toolCalls = [];
const toolCallsMap = new Map(); // Track streaming tool calls by ID
const finalizedIds = new Set();
const emittedToolCallIds = new Set();
let frameCount = 0;
debugLog(`[CURSOR BUFFER SSE] Total length: ${buffer.length} bytes`);
while (offset < buffer.length) {
if (offset + 5 > buffer.length) break;
if (offset + 5 > buffer.length) {
debugLog(
`[CURSOR BUFFER SSE] Reached end, offset=${offset}, remaining=${buffer.length - offset}`
);
break;
}
const flags = buffer[offset];
const length = buffer.readUInt32BE(offset + 1);
if (offset + 5 + length > buffer.length) break;
debugLog(
`[CURSOR BUFFER SSE] Frame ${frameCount + 1}: flags=0x${flags.toString(16).padStart(2, "0")}, length=${length}`
);
if (offset + 5 + length > buffer.length) {
debugLog(
`[CURSOR BUFFER SSE] Incomplete frame, offset=${offset}, length=${length}, buffer.length=${buffer.length}`
);
break;
}
let payload = buffer.slice(offset + 5, offset + 5 + length);
offset += 5 + length;
frameCount++;
// Stop at ConnectRPC trailer frame (end of response, anything after is a separate response)
if (flags & COMPRESS_FLAG.TRAILER) {
break;
payload = decompressPayload(payload, flags);
if (!payload) {
debugLog(`[CURSOR BUFFER SSE] Frame ${frameCount}: decompression failed, skipping`);
continue;
}
payload = decompressPayload(payload, flags);
if (!payload) continue;
try {
const text = payload.toString("utf-8");
if (text.startsWith("{") && text.includes('"error"')) {
return createErrorResponse(JSON.parse(text));
}
} catch {}
// Check for JSON error frames (byte-guard: only decode if starts with '{')
if (payload[0] === 0x7b) {
try {
const text = payload.toString("utf-8");
if (text.includes('"error"')) {
const hasContent = chunks.length > 0 || totalContent || toolCallsMap.size > 0;
debugLog(
`[CURSOR BUFFER SSE] Error frame (hasContent=${hasContent}): ${text.slice(0, 500)}`
);
if (hasContent) {
break;
}
return createErrorResponse(JSON.parse(text));
}
} catch {}
}
const result = extractTextFromResponse(new Uint8Array(payload));
debugLog(`[CURSOR DECODED SSE] Frame ${frameCount}:`, result);
if (result.error) {
return new Response(JSON.stringify({
error: {
message: result.error,
type: "rate_limit_error",
code: "rate_limited"
const hasContent = chunks.length > 0 || totalContent || toolCallsMap.size > 0;
debugLog(`[CURSOR BUFFER SSE] Decoded error (hasContent=${hasContent}): ${result.error}`);
if (hasContent) {
break;
}
return new Response(
JSON.stringify({
error: {
message: result.error,
type: "rate_limit_error",
code: "rate_limited"
}
}),
{
status: HTTP_STATUS.RATE_LIMITED,
headers: { "Content-Type": "application/json" }
}
}), {
status: HTTP_STATUS.RATE_LIMITED,
headers: { "Content-Type": "application/json" }
});
);
}
if (result.toolCall) {
const tc = result.toolCall;
if (chunks.length === 0) {
chunks.push(`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: { role: "assistant", content: "" },
finish_reason: null
}]
})}\n\n`);
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta: { role: "assistant", content: "" },
finish_reason: null
}
]
})}\n\n`
);
}
if (toolCallsMap.has(tc.id)) {
// Accumulate arguments for existing tool call
const existing = toolCallsMap.get(tc.id);
const oldArgsLen = existing.function.arguments.length;
existing.function.arguments += tc.function.arguments;
existing.isLast = tc.isLast;
// Stream the delta arguments
if (tc.function.arguments) {
chunks.push(`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: {
tool_calls: [{
index: existing.index,
id: tc.id,
type: "function",
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
}]
},
finish_reason: null
}]
})}\n\n`);
emittedToolCallIds.add(tc.id);
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta: {
tool_calls: [
{
index: existing.index,
id: tc.id,
type: "function",
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
}
]
},
finish_reason: null
}
]
})}\n\n`
);
}
} else {
// New tool call - assign index and add to map
const toolCallIndex = toolCalls.length;
finalizedIds.add(tc.id);
toolCalls.push({ ...tc, index: toolCallIndex });
toolCallsMap.set(tc.id, { ...tc, index: toolCallIndex });
// Stream initial tool call with name
chunks.push(`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: {
tool_calls: [{
index: toolCallIndex,
id: tc.id,
type: "function",
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
}]
},
finish_reason: null
}]
})}\n\n`);
emittedToolCallIds.add(tc.id);
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta: {
tool_calls: [
{
index: toolCallIndex,
id: tc.id,
type: "function",
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
}
]
},
finish_reason: null
}
]
})}\n\n`
);
}
}
if (result.text) {
totalContent += result.text;
chunks.push(`data: ${JSON.stringify({
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta:
chunks.length === 0 && toolCalls.length === 0
? { role: "assistant", content: result.text }
: { content: result.text },
finish_reason: null
}
]
})}\n\n`
);
}
}
debugLog(
`[CURSOR BUFFER SSE] Parsed ${frameCount} frames, toolCallsMap size: ${toolCallsMap.size}, toolCalls array: ${toolCalls.length}`
);
// Finalize all remaining tool calls in map (stream may have ended without isLast=true)
for (const [id, tc] of toolCallsMap.entries()) {
if (!finalizedIds.has(id)) {
debugLog(`[CURSOR BUFFER SSE] Finalizing incomplete tool call: ${id}, isLast=${tc.isLast}`);
const toolCallIndex = toolCalls.length;
toolCalls.push({
id: tc.id,
type: tc.type,
index: toolCallIndex,
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
});
// Emit SSE chunk for the finalized tool call if not already emitted
if (!emittedToolCallIds.has(tc.id)) {
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta: {
tool_calls: [
{
index: toolCallIndex,
id: tc.id,
type: "function",
function: {
name: tc.function.name,
arguments: tc.function.arguments
}
}
]
},
finish_reason: null
}
]
})}\n\n`
);
}
}
}
if (chunks.length === 0 && toolCalls.length === 0) {
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: chunks.length === 0 && toolCalls.length === 0
? { role: "assistant", content: result.text }
: { content: result.text },
finish_reason: null
}]
})}\n\n`);
}
}
if (chunks.length === 0 && toolCalls.length === 0) {
chunks.push(`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: { role: "assistant", content: "" },
finish_reason: null
}]
})}\n\n`);
choices: [
{
index: 0,
delta: { role: "assistant", content: "" },
finish_reason: null
}
]
})}\n\n`
);
}
const usage = estimateUsage(body, totalContent.length, FORMATS.OPENAI);
chunks.push(`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [{
index: 0,
delta: {},
finish_reason: toolCalls.length > 0 ? "tool_calls" : "stop"
}],
usage
})}\n\n`);
chunks.push(
`data: ${JSON.stringify({
id: responseId,
object: "chat.completion.chunk",
created,
model,
choices: [
{
index: 0,
delta: {},
finish_reason: toolCalls.length > 0 ? "tool_calls" : "stop"
}
],
usage
})}\n\n`
);
chunks.push("data: [DONE]\n\n");
return new Response(chunks.join(""), {