fix(oauth): refresh Cline tokens with extension JSON contract

open-sse/services/tokenRefresh.js

@@ -4,6 +4,7 @@ import {
   refreshXaiToken,
   refreshAccessToken,
   refreshKimiToken,
+  refreshClineToken,
   refreshClaudeOAuthToken,
   refreshGoogleToken,
   refreshCodexToken,
@@ -23,6 +24,7 @@ import {
 export {
   refreshAccessToken,
   refreshKimiToken,
+  refreshClineToken,
   refreshClaudeOAuthToken,
   refreshGoogleToken,
   refreshCodexToken,
@@ -145,6 +147,7 @@ const REFRESH_HANDLERS = {
   "codebuddy-cn": (c, log) => refreshCodebuddyToken(c.refreshToken, log),
   "codebuddy-intl": (c, log) => refreshCodebuddyIntlToken(c.refreshToken, log),
   trae: (c, log) => refreshTraeToken(c.refreshToken, c, log),
+  cline: (c, log) => refreshClineToken(c.refreshToken, log),
   zed: () => refreshZedToken(),
   windsurf: (c, log) => refreshWindsurfToken(c, log),
   // Kimi Code OAuth (merged into id `kimi`); legacy id still routes here

open-sse/services/tokenRefresh/providers.js

@@ -147,6 +147,53 @@ export async function refreshKimiToken(refreshToken, credentials, log) {
   return refreshAccessToken("kimi", refreshToken, credentials, log);
 }
 
+export async function refreshClineToken(refreshToken, log) {
+  if (!refreshToken) return null;
+
+  return dedupRefresh("cline", refreshToken, async () => {
+    try {
+      const response = await fetch(PROVIDERS.cline?.refreshUrl, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Accept: "application/json",
+        },
+        body: JSON.stringify({
+          refreshToken,
+          grantType: "refresh_token",
+          clientType: "extension",
+        }),
+      });
+
+      if (!response.ok) {
+        const errorText = await response.text();
+        log?.error?.("TOKEN_REFRESH", "Failed to refresh Cline token", {
+          status: response.status,
+          error: errorText,
+        });
+        return null;
+      }
+
+      const body = await response.json();
+      const tokens = body?.data || body;
+      if (!tokens?.accessToken) return null;
+
+      const expiresIn = tokens.expiresAt
+        ? Math.max(1, Math.floor((new Date(tokens.expiresAt).getTime() - Date.now()) / 1000))
+        : (tokens.expiresIn || tokens.expires_in || 3600);
+
+      return {
+        accessToken: tokens.accessToken,
+        refreshToken: tokens.refreshToken || refreshToken,
+        expiresIn,
+      };
+    } catch (error) {
+      log?.error?.("TOKEN_REFRESH", `Error refreshing Cline token: ${error.message}`);
+      return null;
+    }
+  }, log);
+}
+
 // Claude OAuth: JSON body, client_id only. Delegate to refreshAccessToken("claude", ...).
 export async function refreshClaudeOAuthToken(refreshToken, log) {
   return refreshAccessToken("claude", refreshToken, {}, log);

tests/unit/token-refresh-generic.test.js

@@ -102,19 +102,38 @@ describe("refreshAccessToken — config-driven profiles", () => {
     expect(fm).toHaveBeenCalledTimes(1);
   });
 });
-
-describe("refreshAccessToken — legacy generic path (no profile)", () => {
+describe("Cline refresh", () => {
   beforeEach(() => { vi.clearAllMocks(); vi.resetModules(); global.fetch = originalFetch; });
   afterEach(() => { global.fetch = originalFetch; });
 
-  it("still works for an unprofiled provider via config.refreshUrl/clientId/clientSecret", async () => {
-    const fm = mockFetchOnce({ access_token: "gen-acc", expires_in: 3600 });
-    const { refreshAccessToken } = await import("open-sse/services/tokenRefresh/providers.js");
+  it("uses the extension JSON refresh contract", async () => {
+    const expiresAt = new Date(Date.now() + 3600 * 1000).toISOString();
+    const fm = mockFetchOnce({
+      data: {
+        accessToken: "cline-acc",
+        refreshToken: "cline-rot",
+        expiresAt,
+      },
+    });
+    const { refreshTokenByProvider } = await import(
+      "open-sse/services/tokenRefresh.js"
+    );
 
-    await refreshAccessToken("cline", "gen-old", {}, console);
+    const out = await refreshTokenByProvider(
+      "cline",
+      { refreshToken: "cline-old" },
+      console
+    );
 
-    const body = new URLSearchParams(fm.mock.calls[0][1].body);
-    expect(body.get("grant_type")).toBe("refresh_token");
-    expect(body.get("client_id")).toBeTruthy();
+    const [, init] = fm.mock.calls[0];
+    expect(init.headers["Content-Type"]).toBe("application/json");
+    expect(JSON.parse(init.body)).toEqual({
+      refreshToken: "cline-old",
+      grantType: "refresh_token",
+      clientType: "extension",
+    });
+    expect(out.accessToken).toBe("cline-acc");
+    expect(out.refreshToken).toBe("cline-rot");
+    expect(out.expiresIn).toBeGreaterThan(0);
   });
 });