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refactor(fingerprint): 移除请求头构建路径中的 per-key 指纹定制化注入

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headers.py 删除 build_browser_fingerprint_headers / build_anthropic_extra_headers
函数及相关辅助，改为直接使用固定常量；PassthroughRequestBuilder 移除
Claude 格式的指纹注入步骤；Antigravity constants 移除 per-key 指纹
覆盖逻辑，统一使用进程级固定值。
This commit is contained in:
fawney19
2026-03-05 10:24:52 +08:00
parent 1ac59d4894
commit fdb50a065b
4 changed files with 9 additions and 106 deletions
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62
src/core/api_format/headers.py
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@@ -14,7 +14,7 @@ from __future__ import annotations
import json
from collections.abc import Set as AbstractSet
from typing import TYPE_CHECKING, Any
from typing import Any
from src.core.api_format.enums import ApiFamily
from src.core.api_format.metadata import (
@@ -26,9 +26,6 @@ from src.core.api_format.metadata import (
from src.core.api_format.signature import EndpointSignature, parse_signature_key
from src.core.logger import logger
if TYPE_CHECKING:
from src.services.provider.fingerprint import FingerprintProfile
# =============================================================================
# 头部常量定义
# =============================================================================
@@ -128,59 +125,6 @@ RESPONSE_DROP_HEADERS: frozenset[str] = (
)
_DEFAULT_CHROME_MAJOR = "140"
def _extract_chrome_major(version: str) -> str:
value = str(version or "").strip()
if not value:
return _DEFAULT_CHROME_MAJOR
return value.split(".", 1)[0] or _DEFAULT_CHROME_MAJOR
def _resolve_sec_ch_platform(fp: FingerprintProfile) -> str:
os_name = (fp.stainless_os or "").strip().lower()
platform_info = (fp.platform_info or "").strip().lower()
if os_name.startswith("win") or "windows" in platform_info:
return '"Windows"'
if os_name in {"mac", "macos", "darwin"} or "darwin" in platform_info:
return '"macOS"'
return '"Linux"'
def build_browser_fingerprint_headers(fp: FingerprintProfile | None = None) -> dict[str, str]:
"""Build browser fingerprint headers, optionally overridden by per-key fingerprint."""
headers = {**BROWSER_FINGERPRINT_HEADERS}
if fp is None:
return headers
chrome_major = _extract_chrome_major(fp.chrome_version)
headers["User-Agent"] = fp.user_agent or headers["User-Agent"]
headers["sec-ch-ua"] = f'"Not=A?Brand";v="24", "Chromium";v="{chrome_major}"'
headers["sec-ch-ua-platform"] = _resolve_sec_ch_platform(fp)
return headers
def build_anthropic_extra_headers(fp: FingerprintProfile | None = None) -> dict[str, str]:
"""Build Anthropic extra headers, optionally overridden by per-key fingerprint."""
headers = {**_ANTHROPIC_EXTRA_HEADERS}
if fp is None:
return headers
headers["x-stainless-os"] = fp.stainless_os or headers["x-stainless-os"]
headers["x-stainless-arch"] = fp.stainless_arch or headers["x-stainless-arch"]
headers["x-stainless-package-version"] = (
fp.stainless_package_version or headers["x-stainless-package-version"]
)
# browser:chrome runtime-version = Chrome 版本；
# CLI 路径(ClaudeCodeEnvelope)使用 Node.js，其 extra_headers 会以 fp.stainless_runtime_version 覆盖。
headers["x-stainless-runtime-version"] = (
fp.chrome_version or headers["x-stainless-runtime-version"]
)
return headers
# =============================================================================
# 请求头规范化
# =============================================================================
@@ -624,12 +568,12 @@ def build_adapter_base_headers_for_endpoint(
auth_value = f"Bearer {api_key}" if auth_type == "bearer" else api_key
# 以浏览器指纹为底层默认值，绕过 Cloudflare 等反爬防护
headers: dict[str, str] = build_browser_fingerprint_headers()
headers: dict[str, str] = {**BROWSER_FINGERPRINT_HEADERS}
# Claude API family 额外注入 Anthropic 专属 header
definition = resolve_endpoint_definition(endpoint)
if definition and definition.api_family == ApiFamily.CLAUDE:
headers.update(build_anthropic_extra_headers())
headers.update(_ANTHROPIC_EXTRA_HEADERS)
headers[auth_header] = auth_value
headers["Content-Type"] = "application/json"