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reader/skills/reader-digest-flow/references/ima-cos-credential-handling.md
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root 5eb390e3ed docs: 添加 Agent Skill 到项目仓库
- 复制 reader-digest-flow skill 到 skills/ 目录(含 SKILL.md + references/)
- README 新增 Agent Skill 章节说明供 Agent 使用的工作流
2026-07-28 18:38:54 +08:00

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# IMA COS 上传凭证处理(Hermes redact_secrets 兼容模式)
## 问题
Hermes 配置 `security.redact_secrets: true` 时,`create_media` API 返回的 `cos_credential.token` 字段在 `terminal()` 输出中被替换为 `***`。
直接通过 `terminal()` 调用 `cos-upload.cjs` 会因 token 截断而失败(HTTP 403 InvalidAccessKeyId)。
## 安全的工作流(execute_code + subprocess.run)
不要用 `terminal()` 传递 COS 凭证。改用 `execute_code()` + `subprocess.run()` 模式:
```python
# Phase A: terminal() 中保存原始响应到文件
result = terminal("""
bash -c '
set -a
source /home/ubuntu/zhu/github/reader/.env
set +a
OPTS=$(printf "%s" "{\\"clientId\\":\\""$IMA_OPENAPI_CLIENTID"\\",\\\"apiKey\\":\\\""$IMA_OPENAPI_APIKEY"\\\"}")
RESP=$(node /root/.hermes/skills/openclaw-imports/ima-skill/ima_api.cjs "openapi/wiki/v1/create_media" "{...}" "$OPTS" 2>/dev/null)
echo "$RESP" > /tmp/create_media_raw.json
echo "saved"
'
""")
# Phase B: execute_code 中从文件读取凭证
import json, subprocess
with open("/tmp/create_media_raw.json") as f:
data = json.load(f)
cred = data["data"]["cos_credential"]
# Phase C: subprocess.run 直接调用,不经过 terminal()
args = ["node", f"{SKILL_DIR}/knowledge-base/scripts/cos-upload.cjs",
"--file", FILE_PATH, "--secret-id", cred["secret_id"], "--secret-key", cred["secret_key"],
"--token", cred["token"], "--bucket", cred["bucket_name"], "--region", cred["region"],
"--cos-key", cred["cos_key"], "--content-type", "text/markdown",
"--start-time", cred["start_time"], "--expired-time", cred["expired_time"], "--timeout", "300000"]
r = subprocess.run(args, capture_output=True, text=True, timeout=310)
```
## 对比:错误的做法(terminal 直接传递)
```bash
# ⛔ 这样不行!token 会被 redact_secrets 替换为 ***
TOKEN=$(echo "$RESP" | jq -r '.data.cos_credential.token')
node ... --token "$TOKEN" ... # 会收到 HTTP 403
```
## 关键原则
- `terminal()` 输出中的敏感字段会被自动脱敏,但不影响底层 JSON 文件写入
- `execute_code` 中 `terminal()` 返回的 `output` 已经是脱敏后的文本
- **唯一可靠的凭证源**是直接写入磁盘的原始 JSON 文件
- `subprocess.run` 在 `execute_code` 中绕过脱敏,因为凭证在 Python 内存中直接被传递给子进程,不经过 Hermes 的 stdout 脱敏管道