From 596019505f13c3db8f74369da7979f6f658d8f98 Mon Sep 17 00:00:00 2001
From: Jason
Date: Wed, 10 Jun 2026 16:39:26 +0800
Subject: [PATCH] feat(provider-form): custom User-Agent presets dropdown in
advanced settings
Polish the provider-level User-Agent override UI on the Claude and Codex forms.
- Add a shared CustomUserAgentField (label + input + preset dropdown + live
validation) so both forms stay in sync.
- Provide curated UA presets (Claude Code / Kilo Code families that pass
coding-plan UA whitelists per #3671); the first is Claude Code's real
`claude-cli/x (external, cli)` format. Whitelists gate on the name prefix,
not the version, so static values stay valid across upgrades.
- Expose presets via a dropdown to the right of the input (z-[200] so it
renders above the dialog layers) instead of inline chips.
- Move the field into the existing advanced/reasoning collapsibles.
- userAgent.ts mirrors the backend byte rule (reject only control chars;
non-ASCII is allowed) for a non-blocking inline hint.
- i18n for all four locales (zh/en/ja/zh-TW).
---
.../providers/forms/ClaudeFormFields.tsx | 38 +++-----
.../providers/forms/CodexFormFields.tsx | 46 ++++-----
.../providers/forms/CustomUserAgentField.tsx | 96 +++++++++++++++++++
src/config/userAgentPresets.ts | 20 ++++
src/i18n/locales/en.json | 4 +
src/i18n/locales/ja.json | 4 +
src/i18n/locales/zh-TW.json | 4 +
src/i18n/locales/zh.json | 4 +
src/lib/userAgent.ts | 16 ++++
tests/components/ClaudeFormFields.test.tsx | 2 +
tests/lib/userAgent.test.ts | 34 +++++++
11 files changed, 212 insertions(+), 56 deletions(-)
create mode 100644 src/components/providers/forms/CustomUserAgentField.tsx
create mode 100644 src/config/userAgentPresets.ts
create mode 100644 src/lib/userAgent.ts
create mode 100644 tests/lib/userAgent.test.ts
diff --git a/src/components/providers/forms/ClaudeFormFields.tsx b/src/components/providers/forms/ClaudeFormFields.tsx
index 7625c5347..fadd026ce 100644
--- a/src/components/providers/forms/ClaudeFormFields.tsx
+++ b/src/components/providers/forms/ClaudeFormFields.tsx
@@ -47,6 +47,7 @@ import {
showFetchModelsError,
type FetchedModel,
} from "@/lib/api/model-fetch";
+import { CustomUserAgentField } from "./CustomUserAgentField";
import type {
ProviderCategory,
ClaudeApiFormat,
@@ -204,7 +205,8 @@ export function ClaudeFormFields({
defaultSonnetModel ||
defaultOpusModel ||
apiFormat !== "anthropic" ||
- apiKeyField !== "ANTHROPIC_AUTH_TOKEN"
+ apiKeyField !== "ANTHROPIC_AUTH_TOKEN" ||
+ customUserAgent
);
const [advancedExpanded, setAdvancedExpanded] = useState(hasAnyAdvancedValue);
@@ -257,7 +259,7 @@ export function ClaudeFormFields({
const modelsUrl = matchedPreset?.modelsUrl;
setIsFetchingModels(true);
- fetchModelsForConfig(baseUrl, apiKey, isFullUrl, modelsUrl)
+ fetchModelsForConfig(baseUrl, apiKey, isFullUrl, modelsUrl, customUserAgent)
.then((models) => {
setFetchedModels(models);
showModelFetchResult(models.length);
@@ -267,7 +269,7 @@ export function ClaudeFormFields({
showFetchModelsError(err, t);
})
.finally(() => setIsFetchingModels(false));
- }, [baseUrl, apiKey, isFullUrl, showModelFetchResult, t]);
+ }, [baseUrl, apiKey, isFullUrl, customUserAgent, showModelFetchResult, t]);
const handleFetchCopilotModels = useCallback(() => {
if (!isCopilotAuthenticated) {
@@ -671,30 +673,6 @@ export function ClaudeFormFields({
/>
)}
- {category !== "official" && (
-
-
- {t("providerForm.customUserAgent", {
- defaultValue: "自定义 User-Agent",
- })}
-
-
onCustomUserAgentChange(e.target.value)}
- placeholder="Mozilla/5.0 ..."
- autoComplete="off"
- />
-
- {t("providerForm.customUserAgentHint", {
- defaultValue:
- "仅在开启本地路由/代理接管后生效,会替换转发到供应商 API 请求中的 User-Agent。",
- })}
-
-
- )}
-
{shouldShowModelSelector && (
@@ -962,6 +940,12 @@ export function ClaudeFormFields({
})}
+
+
)}
diff --git a/src/components/providers/forms/CodexFormFields.tsx b/src/components/providers/forms/CodexFormFields.tsx
index 680ec0878..ac1101d9b 100644
--- a/src/components/providers/forms/CodexFormFields.tsx
+++ b/src/components/providers/forms/CodexFormFields.tsx
@@ -25,6 +25,7 @@ import {
showFetchModelsError,
type FetchedModel,
} from "@/lib/api/model-fetch";
+import { CustomUserAgentField } from "./CustomUserAgentField";
import type {
CodexApiFormat,
CodexCatalogModel,
@@ -222,7 +223,13 @@ export function CodexFormFields({
return;
}
setIsFetchingModels(true);
- fetchModelsForConfig(codexBaseUrl, codexApiKey, isFullUrl)
+ fetchModelsForConfig(
+ codexBaseUrl,
+ codexApiKey,
+ isFullUrl,
+ undefined,
+ customUserAgent,
+ )
.then((models) => {
setFetchedModels(models);
if (models.length === 0) {
@@ -238,7 +245,7 @@ export function CodexFormFields({
showFetchModelsError(err, t);
})
.finally(() => setIsFetchingModels(false));
- }, [codexBaseUrl, codexApiKey, isFullUrl, t]);
+ }, [codexBaseUrl, codexApiKey, isFullUrl, customUserAgent, t]);
const handleAddCatalogRow = useCallback(() => {
if (!onCatalogModelsChange) return;
@@ -436,6 +443,14 @@ export function CodexFormFields({
})}
/>
+
+
+
+
)}
@@ -588,33 +603,6 @@ export function CodexFormFields({
onCustomEndpointsChange={onCustomEndpointsChange}
/>
)}
-
- {category !== "official" && (
-
-
-
onCustomUserAgentChange(e.target.value)}
- placeholder="Mozilla/5.0 ..."
- autoComplete="off"
- />
-
- {t("providerForm.customUserAgentHint", {
- defaultValue:
- "仅在开启本地路由/代理接管后生效,会替换转发到供应商 API 请求中的 User-Agent。",
- })}
-
-
- )}
>
);
}
diff --git a/src/components/providers/forms/CustomUserAgentField.tsx b/src/components/providers/forms/CustomUserAgentField.tsx
new file mode 100644
index 000000000..dc7151649
--- /dev/null
+++ b/src/components/providers/forms/CustomUserAgentField.tsx
@@ -0,0 +1,96 @@
+import { useTranslation } from "react-i18next";
+import { ChevronDown } from "lucide-react";
+import { FormLabel } from "@/components/ui/form";
+import { Input } from "@/components/ui/input";
+import { Button } from "@/components/ui/button";
+import {
+ DropdownMenu,
+ DropdownMenuContent,
+ DropdownMenuItem,
+ DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+import { isValidUserAgentHeader } from "@/lib/userAgent";
+import { USER_AGENT_PRESETS } from "@/config/userAgentPresets";
+
+interface CustomUserAgentFieldProps {
+ /** 输入框的 id(用于 label htmlFor);两个表单需传入各自唯一值。 */
+ id: string;
+ value: string;
+ onChange: (value: string) => void;
+}
+
+/**
+ * 供应商级自定义 User-Agent 字段(Claude / Codex 表单共用)。
+ *
+ * 含标签 + 输入框 + 右侧预设下拉菜单 + 实时合法性提示。校验口径与后端
+ * `parse_custom_user_agent` 一致(见 `@/lib/userAgent`),非法时给非阻断红字提示
+ * (运行时仍会静默忽略)。
+ */
+export function CustomUserAgentField({
+ id,
+ value,
+ onChange,
+}: CustomUserAgentFieldProps) {
+ const { t } = useTranslation();
+ const valid = isValidUserAgentHeader(value);
+
+ return (
+
+
+ {t("providerForm.customUserAgent", {
+ defaultValue: "自定义 User-Agent",
+ })}
+
+
+ onChange(e.target.value)}
+ placeholder="Mozilla/5.0 ..."
+ autoComplete="off"
+ className="flex-1"
+ />
+
+
+
+
+
+ {USER_AGENT_PRESETS.map((preset) => (
+ onChange(preset)}
+ className="font-mono text-xs"
+ >
+ {preset}
+
+ ))}
+
+
+
+ {valid ? (
+
+ {t("providerForm.customUserAgentHint", {
+ defaultValue:
+ "仅在开启本地路由/代理接管后生效,会替换转发到供应商 API 请求中的 User-Agent。",
+ })}
+
+ ) : (
+
+ {t("providerForm.customUserAgentInvalid", {
+ defaultValue:
+ "User-Agent 不能包含控制字符(如换行符),否则将被忽略。",
+ })}
+
+ )}
+
+ );
+}
diff --git a/src/config/userAgentPresets.ts b/src/config/userAgentPresets.ts
new file mode 100644
index 000000000..5e7f6f1f4
--- /dev/null
+++ b/src/config/userAgentPresets.ts
@@ -0,0 +1,20 @@
+/**
+ * 自定义 User-Agent 预设。
+ *
+ * 取值来自 PR #3671 对 Kimi Coding Plan(api.kimi.com/coding)UA 白名单的 curl 实测:
+ * `claude-cli/*`、`claude-code/*`、`Kilo-Code/*` 可通过;`codex-cli`、`kimi-cli` 会被 403。
+ * 白名单只校验 UA 名称前缀、不看版本号,因此用静态值即可,版本不会因 Claude Code 升级而失效。
+ *
+ * 第一条是官方 Claude Code CLI 实际发送的完整格式(参见 `stream_check.rs` 里检测用的
+ * `claude-cli/2.1.2 (external, cli)`),最贴近真实客户端、最稳过严格的 UA 校验;其余为简短变体。
+ *
+ * 这些预设主要用于"非白名单 Coding Agent(Codex/Gemini/Hermes/OpenClaw 等)想接入受 UA
+ * 限制的上游"的场景——把转发请求伪装成已在白名单内的客户端。是否使用由用户显式选择。
+ */
+export const USER_AGENT_PRESETS: readonly string[] = [
+ "claude-cli/2.1.161 (external, cli)",
+ "claude-cli/2.1.161",
+ "claude-code/1.0.0",
+ "claude-code/0.1.0",
+ "Kilo-Code/1.0",
+];
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index f29569c34..f2ad7d2fb 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -1043,6 +1043,10 @@
"anthropicSmallFastModel": "Fast Model",
"apiFormat": "API Format",
"apiFormatHint": "Select the input format for the provider's API",
+ "customUserAgent": "Custom User-Agent",
+ "customUserAgentHint": "Only takes effect when local routing/proxy takeover is enabled; replaces the User-Agent in requests forwarded to the provider API.",
+ "customUserAgentInvalid": "User-Agent must not contain control characters (e.g. line breaks); otherwise it will be ignored.",
+ "customUserAgentPresets": "Presets",
"fullUrlLabel": "Full URL",
"fullUrlEnabled": "Full URL Mode",
"fullUrlDisabled": "Mark as Full URL",
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index 858067d78..eed2d090e 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -1043,6 +1043,10 @@
"anthropicSmallFastModel": "高速モデル",
"apiFormat": "API フォーマット",
"apiFormatHint": "プロバイダー API の入力フォーマットを選択",
+ "customUserAgent": "カスタム User-Agent",
+ "customUserAgentHint": "ローカルルーティング/プロキシ引き継ぎが有効な場合にのみ適用され、プロバイダー API へ転送するリクエストの User-Agent を置き換えます。",
+ "customUserAgentInvalid": "User-Agent に制御文字(改行など)を含めることはできません。含まれている場合は無視されます。",
+ "customUserAgentPresets": "プリセット",
"fullUrlLabel": "フル URL",
"fullUrlEnabled": "フル URL モード",
"fullUrlDisabled": "フル URL として設定",
diff --git a/src/i18n/locales/zh-TW.json b/src/i18n/locales/zh-TW.json
index 5dfe8fd15..6191fa536 100644
--- a/src/i18n/locales/zh-TW.json
+++ b/src/i18n/locales/zh-TW.json
@@ -1014,6 +1014,10 @@
"anthropicSmallFastModel": "快速模型",
"apiFormat": "API 格式",
"apiFormatHint": "選擇供應商 API 的輸入格式",
+ "customUserAgent": "自訂 User-Agent",
+ "customUserAgentHint": "僅在開啟本地路由/代理接管後生效,會取代轉發至供應商 API 請求中的 User-Agent。",
+ "customUserAgentInvalid": "User-Agent 不能包含控制字元(如換行字元),否則將被忽略。",
+ "customUserAgentPresets": "預設",
"fullUrlLabel": "完整 URL",
"fullUrlEnabled": "完整 URL 模式",
"fullUrlDisabled": "標記為完整 URL",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index 59b6be3fd..6ffbea292 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -1043,6 +1043,10 @@
"anthropicSmallFastModel": "快速模型",
"apiFormat": "API 格式",
"apiFormatHint": "选择供应商 API 的输入格式",
+ "customUserAgent": "自定义 User-Agent",
+ "customUserAgentHint": "仅在开启本地路由/代理接管后生效,会替换转发到供应商 API 请求中的 User-Agent。",
+ "customUserAgentInvalid": "User-Agent 不能包含控制字符(如换行符),否则将被忽略。",
+ "customUserAgentPresets": "预设",
"fullUrlLabel": "完整 URL",
"fullUrlEnabled": "完整 URL 模式",
"fullUrlDisabled": "标记为完整 URL",
diff --git a/src/lib/userAgent.ts b/src/lib/userAgent.ts
new file mode 100644
index 000000000..5daa9049b
--- /dev/null
+++ b/src/lib/userAgent.ts
@@ -0,0 +1,16 @@
+/**
+ * 自定义 User-Agent 合法性校验。
+ *
+ * 与后端 `parse_custom_user_agent`(基于 `http::HeaderValue::from_str`)口径严格一致:
+ * HeaderValue 按**字节**判定合法性,规则为 `b >= 32 && b != 127 || b == '\t'`。也就是说:
+ * - 制表符(\t)、可见 ASCII(0x20–0x7E)、以及任意非 ASCII 字符(UTF-8 字节均 ≥ 0x80)都合法;
+ * - 仅控制字符非法:除 \t 外的 0x00–0x1F(含换行)与 0x7F(DEL)。
+ *
+ * 空串(trim 后为空)视为"未设置",合法。
+ */
+export function isValidUserAgentHeader(value: string): boolean {
+ const trimmed = value.trim();
+ if (trimmed === "") return true;
+ // eslint-disable-next-line no-control-regex
+ return !/[\x00-\x08\x0a-\x1f\x7f]/.test(trimmed);
+}
diff --git a/tests/components/ClaudeFormFields.test.tsx b/tests/components/ClaudeFormFields.test.tsx
index e18a15ca9..336339260 100644
--- a/tests/components/ClaudeFormFields.test.tsx
+++ b/tests/components/ClaudeFormFields.test.tsx
@@ -91,6 +91,8 @@ const renderCopilotForm = (overrides: Partial = {}) => {
onApiKeyFieldChange: vi.fn(),
isFullUrl: false,
onFullUrlChange: vi.fn(),
+ customUserAgent: "",
+ onCustomUserAgentChange: vi.fn(),
...overrides,
};
diff --git a/tests/lib/userAgent.test.ts b/tests/lib/userAgent.test.ts
new file mode 100644
index 000000000..47a6865af
--- /dev/null
+++ b/tests/lib/userAgent.test.ts
@@ -0,0 +1,34 @@
+import { describe, it, expect } from "vitest";
+import { isValidUserAgentHeader } from "@/lib/userAgent";
+
+// 与后端 parse_custom_user_agent / http::HeaderValue::from_str 的字节级规则对齐:
+// 合法 = b>=32 && b!=127 || b=='\t'。即仅控制字符(除 \t 外的 0x00–0x1F 与 0x7F)非法,
+// 可见 ASCII 与非 ASCII 都合法。控制字符用 String.fromCharCode 构造,避免源码内嵌生字节。
+const NUL = String.fromCharCode(0);
+const DEL = String.fromCharCode(0x7f);
+
+describe("isValidUserAgentHeader", () => {
+ it("treats empty / whitespace-only as valid (unset)", () => {
+ expect(isValidUserAgentHeader("")).toBe(true);
+ expect(isValidUserAgentHeader(" ")).toBe(true);
+ });
+
+ it("accepts visible ASCII (trimmed)", () => {
+ expect(isValidUserAgentHeader("claude-cli/2.1.161")).toBe(true);
+ expect(isValidUserAgentHeader(" claude-cli/2.1.161 ")).toBe(true);
+ });
+
+ it("accepts non-ASCII — matches backend HeaderValue byte rule", () => {
+ expect(isValidUserAgentHeader("claude-cli/1.0 中文")).toBe(true);
+ });
+
+ it("accepts internal tab", () => {
+ expect(isValidUserAgentHeader("claude\tcli")).toBe(true);
+ });
+
+ it("rejects control characters (newline / null / DEL)", () => {
+ expect(isValidUserAgentHeader("claude\ncli")).toBe(false);
+ expect(isValidUserAgentHeader(`claude${NUL}cli`)).toBe(false);
+ expect(isValidUserAgentHeader(`claude${DEL}cli`)).toBe(false);
+ });
+});