feat(client): initialize procurement tool skeleton

client/src/cmbuyer_client/logging_policy.py

@@ -0,0 +1,66 @@
+"""采购工具日志的最小脱敏策略。"""
+
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+import re
+
+from .runtime import RuntimePaths
+
+
+LOGGER_NAME = "cmbuyer_client"
+REDACTED = "[已隐藏]"
+
+_SENSITIVE_KEY_PATTERN = (
+    r"token|authorization|password|secret|api[_-]?key|"
+    r"address|phone|mobile|payment|pay|card|bank[_-]?account|"
+    r"令牌|授权|密码|密钥|地址|手机号|电话|支付|银行卡"
+)
+_KEY_VALUE_PATTERN = re.compile(
+    rf"(?P<key>{_SENSITIVE_KEY_PATTERN})\s*(?P<separator>[:=])\s*"
+    r"(?P<value>\"[^\"]*\"|'[^']*'|[^\s,;]+)",
+    flags=re.IGNORECASE,
+)
+_PHONE_PATTERN = re.compile(r"(?<!\d)1[3-9]\d{9}(?!\d)")
+
+
+def redact_text(message: str) -> str:
+    """移除日志文本中的凭据、地址、手机号和支付字段值。"""
+
+    def replace_key_value(match: re.Match[str]) -> str:
+        return f"{match.group('key')}{match.group('separator')}{REDACTED}"
+
+    redacted = _KEY_VALUE_PATTERN.sub(replace_key_value, message)
+    return _PHONE_PATTERN.sub(REDACTED, redacted)
+
+
+class SensitiveDataFilter(logging.Filter):
+    """在任何 handler 格式化记录前，清除敏感字段。
+
+    该过滤器在日志写入前替换 ``msg`` 与 ``args``，确保文件 handler 不会得到原始值。
+    """
+
+    def filter(self, record: logging.LogRecord) -> bool:
+        record.msg = redact_text(record.getMessage())
+        record.args = ()
+        return True
+
+
+def configure_application_logger(paths: RuntimePaths) -> logging.Logger:
+    """配置唯一的 UTF-8 文件日志，并确保其先经过脱敏过滤。"""
+
+    paths.ensure_exists()
+    logger = logging.getLogger(LOGGER_NAME)
+    logger.setLevel(logging.INFO)
+    logger.propagate = False
+
+    for handler in tuple(logger.handlers):
+        logger.removeHandler(handler)
+        handler.close()
+
+    handler = logging.FileHandler(Path(paths.logs) / "client.log", encoding="utf-8")
+    handler.addFilter(SensitiveDataFilter())
+    handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(message)s"))
+    logger.addHandler(handler)
+    return logger