server:POST /uploads(multipart,413 预检、路径/数量/大小校验、 24h 过期包、used 防一包多用)+ 建任务绑定(同事务写附件行 + 包置 used,cloud 执行器 400)+ 列表/详情带 attachments + 取消删暂存 + 分支带走附件清单;db.py PG 建表 + init_db 补表。 worker:_task_seed_dir(无附件/目录已删静默 None)+ dispatch/ goal 三路(同步本地、popen、Docker 只读挂载 /tmp/codex-seed) + cloud 执行器兜底失败 + 终局删暂存。 console:文件/文件夹/图片三路输入,先上传拿 upload_id 再建任务, 列表 [附件×n]、详情列附件路径。 附带:popen 的 goal 命令此前强制要求 verify_command,goal 新语义 任务到本地 worker(走 popen)会直接报错,改成与同步 goal_task 一致(无验收不传 --verify,轮次 0 原样传)。 测试:新增 test_task_attachments.py 15 个。
181 lines
6.8 KiB
Python
181 lines
6.8 KiB
Python
"""任务附件:multipart 解析、相对路径校验、暂存包落盘。
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控制台上传流程(见 README):先 POST /uploads 拿 upload_id,
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再 POST /tasks 带 upload_id 绑定;worker 派发时把暂存目录经
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host.py --seed-dir 拷进 worktree。图片与普通文件不区分对待,
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一律是 worktree 里的文件(模型能否“看懂”图片取决于模型本身,
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本模块不承诺多模态理解)。
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上限:最多 200 个文件,单文件 20MB,文件合计 100MB。路径
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只允许 worktree 内的相对路径,绝不接受绝对路径、..、空段、
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反斜杠与 NUL(防止写出暂存目录或 worktree)。
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"""
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import json
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import os
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import re
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import uuid
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MAX_FILES = 200
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MAX_FILE_BYTES = 20 * 1024 * 1024
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MAX_TOTAL_BYTES = 100 * 1024 * 1024
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# multipart 信封本身的开销:413 预检按这个上限放行原始 body,
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# 真正的文件合计仍按 MAX_TOTAL_BYTES 卡。
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MAX_RAW_BYTES = MAX_TOTAL_BYTES + 10 * 1024 * 1024
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BUNDLE_TTL_SECONDS = 86400
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DEFAULT_UPLOAD_ROOT = "/opt/codex-app-server/work/uploads"
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def upload_root(upload_dir=None):
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"""暂存根目录:显式传入 > 环境变量 > 默认值(与 server 侧一致)。"""
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if upload_dir:
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return str(upload_dir)
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return os.environ.get("CODEX_UPLOAD_DIR") or DEFAULT_UPLOAD_ROOT
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def parse_multipart(body, content_type):
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"""解析 multipart/form-data,返回 (fields, files)。
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fields:name -> 文本(UTF-8 解码失败即 ValueError)。
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files:[(filename, bytes)],按 part 出现顺序。
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只要结构对不上(缺 boundary、缺头、缺分隔)就 ValueError,
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调用方按 400 处理,不静默丢 part。"""
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if not isinstance(body, (bytes, bytearray)):
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raise ValueError("multipart body 必须是 bytes")
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m = re.search(r"boundary=([^;]+)", content_type or "")
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if not m:
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raise ValueError("multipart 缺 boundary")
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boundary = m.group(1).strip().strip('"').encode("utf-8")
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if not boundary:
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raise ValueError("multipart boundary 为空")
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delimiter = b"--" + boundary
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chunks = body.split(delimiter)
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# 首段是信封前导(空),末段是 -- 收尾;中间每段一个 part。
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fields = {}
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files = []
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for chunk in chunks[1:]:
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if chunk.startswith(b"--"):
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break
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if chunk.startswith(b"\r\n"):
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chunk = chunk[2:]
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elif chunk.startswith(b"\n"):
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chunk = chunk[1:]
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if chunk.endswith(b"\r\n"):
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chunk = chunk[:-2]
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elif chunk.endswith(b"\n"):
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chunk = chunk[:-1]
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head, sep, payload = chunk.partition(b"\r\n\r\n")
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if not sep:
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head, sep, payload = chunk.partition(b"\n\n")
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if not sep:
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raise ValueError("multipart part 缺头部分隔")
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headers = head.decode("utf-8", errors="replace")
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disp = None
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for line in headers.splitlines():
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if line.lower().startswith("content-disposition:"):
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disp = line.split(":", 1)[1].strip()
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break
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if disp is None:
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raise ValueError("multipart part 缺 Content-Disposition")
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name_m = re.search(r'name="([^"]*)"', disp)
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if not name_m:
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raise ValueError("multipart part 缺 name")
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name = name_m.group(1)
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file_m = re.search(r'filename="([^"]*)"', disp)
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if file_m is not None:
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files.append((file_m.group(1), bytes(payload)))
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else:
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try:
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fields[name] = payload.decode("utf-8")
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except UnicodeDecodeError:
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raise ValueError("multipart 文本字段不是 UTF-8: %s" % name)
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return fields, files
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def validate_rel_path(path):
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"""校验 worktree 内相对路径;非法返回错误文本,合法返回 None。"""
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if not isinstance(path, str) or not path:
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return "附件路径不能为空"
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if len(path) > 512:
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return "附件路径过长: %s" % path[:50]
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if path.startswith("/") or path.startswith("\\"):
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return "附件路径不能是绝对路径: %s" % path
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if re.match(r"^[A-Za-z]:", path):
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return "附件路径不能带盘符: %s" % path
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if "\x00" in path or "\\" in path:
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return "附件路径含非法字符: %s" % path
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parts = path.split("/")
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for part in parts:
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if part in ("", ".", ".."):
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return "附件路径含非法段: %s" % path
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return None
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def validate_bundle(paths, sizes):
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"""校验一包附件:数量、单文件、合计、路径合法、路径不重复。"""
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if len(paths) > MAX_FILES:
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return "附件最多 %d 个" % MAX_FILES
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if len(paths) != len(sizes):
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return "附件路径与文件数量不一致"
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seen = set()
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total = 0
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for path, size in zip(paths, sizes):
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err = validate_rel_path(path)
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if err:
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return err
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if path in seen:
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return "附件路径重复: %s" % path
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seen.add(path)
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if size > MAX_FILE_BYTES:
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return "单个附件超过 %dMB: %s" % (
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MAX_FILE_BYTES // (1024 * 1024), path)
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total += size
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if total > MAX_TOTAL_BYTES:
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return "附件合计超过 %dMB" % (MAX_TOTAL_BYTES // (1024 * 1024))
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return None
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def save_bundle(root, paths, datas):
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"""把一包附件写进暂存目录,返回 (bundle_id, [(rel_path, size)])。
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调用方须先过 validate_bundle;这里再逐路径校验一次(纵深
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防御:直接调本函数的调用方漏了校验也不至于把 ../ 写出包外)。
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目录是全新 uuid 子目录,里面不会有符号链接,写盘按相对路径
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逐级建目录。"""
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bundle_id = uuid.uuid4().hex
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bundle_dir = os.path.join(root, bundle_id)
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os.makedirs(bundle_dir, exist_ok=False)
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out = []
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for path, data in zip(paths, datas):
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err = validate_rel_path(path)
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if err:
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raise ValueError(err)
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dest = os.path.join(bundle_dir, path)
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os.makedirs(os.path.dirname(dest), exist_ok=True)
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with open(dest, "wb") as f:
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f.write(data)
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out.append((path, len(data)))
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return bundle_id, out
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def bundle_dir_for(root, bundle_id):
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return os.path.join(root, bundle_id)
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def parse_paths_field(fields, files):
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"""控制台传 paths JSON(与 file part 一一对应);不传时退回
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各 part 自带的 filename(API 直调可用)。"""
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raw = fields.get("paths")
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if raw is None:
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return [name for name, _data in files]
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try:
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paths = json.loads(raw)
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except ValueError:
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raise ValueError("paths 不是合法 JSON")
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if not isinstance(paths, list) or not all(
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isinstance(p, str) for p in paths):
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raise ValueError("paths 必须是字符串数组")
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if len(paths) != len(files):
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raise ValueError("附件路径与文件数量不一致")
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return paths
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