[BUG] S3 服务器不兼容RFC 9110 HTTP Semantics（Preconditions）

[jyeric]

请确认以下事项

• 我已确认阅读并同意 AGPL-3.0 第15条 。
  本程序不提供任何明示或暗示的担保，使用风险由您自行承担。

• 我已确认阅读并同意 AGPL-3.0 第16条 。
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• 我已确认没有重复的问题或讨论。

• 我已确认是OpenList的问题，而不是其他原因（例如 网络 ，依赖或操作）。

• 我认为此问题必须由OpenList处理，而非第三方。

• 我已确认这个问题在最新版本中没有被修复。

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OpenList 版本（必填）

v4.2.4

使用的存储驱动（必填）

local

问题描述（必填）

类似于 #3065 ，S3 服务器经测试也没有实现条件写入功能，却返回200。

以下报告由AI生成：

测试项	实际结果	判断
不存在的对象，携带 If-None-Match: * 创建	200，创建成功	符合预期
已存在的对象，携带 If-None-Match: * 再次写入	200，原内容被覆盖	不支持仅当不存在时写入
携带错误的 If-Match 写入	200，原内容被覆盖	未校验版本
携带当前 PUT 返回的 ETag 写入	200，更新成功	单独这一项不能证明支持条件写入
更新后，携带旧 PUT ETag 再次写入	200，新版本被旧版本请求覆盖	不支持乐观锁
对不存在的对象使用 If-Match	200，对象被创建	未执行匹配条件
PUT 响应中的 ETag	有非空值，内容变化后值变化	上传响应提供 ETag
GET / HEAD 响应中的 ETag	均为 ETag: ""	未提供可用于版本比较的有效值

S3 服务没有实现ETag，ETag实现在 RFC 9110 HTTP Semantics 并非必须实现的项目。但应该可以和webdav修复一起实现。 #3066

日志（必填）

[22:38:47] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt: failed to get obj: object not found
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 404 |  531.7µs |       127.0.0.1 | HEAD     "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |    2.1ms |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  507.9µs |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |    531µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  525.8µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |    534µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  529.7µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  529.5µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  535.2µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  534.9µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 204 |  525.7µs |       127.0.0.1 | DELETE   "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt: failed to get obj: object not found
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 404 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |  538.8µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 200 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 204 |       0s |       127.0.0.1 | DELETE   "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:38:47] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt: failed to get obj: object not found
[22:38:47] [INFO] [openlist] [GIN] 2026/09/10 - 22:38:47 | 404 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-1a077c320c2c447483ddf51f415467f2.txt"
[22:39:21] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt: failed to get obj: object not found
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 404 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |    554µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |  531.4µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |  532.9µs |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |  538.8µs |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |  530.3µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |   1.07ms |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:21] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:21 | 200 |  541.1µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |  540.8µs |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |  531.5µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |  525.4µs |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |  535.5µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |  538.3µs |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |       0s |       127.0.0.1 | GET      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 204 |       0s |       127.0.0.1 | DELETE   "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt: failed to get obj: object not found
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 404 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |   1.06ms |       127.0.0.1 | PUT      "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 200 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 204 |       0s |       127.0.0.1 | DELETE   "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"
[22:39:22] [WARN] [openlist] failed get /openlist-local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt: failed to get obj: object not found
[22:39:22] [INFO] [openlist] [GIN] 2026/09/10 - 22:39:22 | 404 |       0s |       127.0.0.1 | HEAD     "/local/s3-lock-probe-521e36b544224f20bb1d24b489a93c97.txt"

配置文件内容（必填）

Irrelevant

复现链接（可选）

No response

AI生成内容

• 我使用了AI工具生成此内容
• 我没有使用AI工具生成此内容

AI模型是

gpt-5.6-sol

[jyxjjj]

fakes3，如果上游修，就backport

[jyeric]

我测试提交到上游issue，Amazon S3是支持的

[jyxjjj]

跟aws有啥关系

[jyeric]

上游是AWS S3 fake server，理论应该与Amazon保持一致吧

[jyeric]

rclone/rclone#8566

以下为 AI 生成内容：

• PutObject：属于 rclone fork 没有同步上游实现。johannesboyne 上游已经支持，而且测试通过。（ Conditional Write (IfMatch and IfNoneMatch) support for PutObject  johannesboyne/gofakes3#107 ）
• CompleteMultipartUpload：属于 johannesboyne 上游也尚未实现，rclone fork 同样受影响。
• CopyObject 的目标对象条件写：同样是 上游也尚未实现，rclone fork 也受影响。

AWS 文档：https://docs.aws.amazon.com/AmazonS3/latest/userguide/conditional-writes.html