[BUG] WebDAV 服务器不兼容RFC 9110 HTTP Semantics（ETag / Preconditions）

[jyeric]

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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）

If-Match, If-None-Match, ETag等使用可以有效避免文件被多个进程争抢覆盖（乐观锁）。目前openlist的webdav服务器实现上不符合 RFC9110 section-13.1.1和RFC9110 section-8.8.3，在不应覆盖文件的情况下错误的覆盖了文件。同时返回201 Created

下面是测试结果（以下为AI生成）：

条件写入测试结果

测试	正确行为	实际行为	结果
创建不存在的随机文件，If-None-Match: *	创建成功	201，创建成功	正常
文件已存在，If-None-Match: *	412，不得覆盖	201，内容被覆盖	错误
If-None-Match: 当前 ETag	412，不得覆盖	201，内容被覆盖	错误
If-Match: 错误 ETag	412，不得覆盖	201，内容被覆盖	错误
If-Match: 当前 ETag	更新成功	201，内容更新	条件无法证明生效
If-Match: 过期 ETag	412，不得覆盖	201，内容被覆盖	错误
覆盖已有文件时的状态码	200 或 204	始终返回 201 Created	错误

此外，文件修改后 ETag 仍然一致，强 ETag 相同应当表示两个资源表示逐字节相同。在ETag的实现上也存在问题。

日志（必填）

[21:15:02] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:02 | 200 |       0s |       127.0.0.1 | OPTIONS  "/dav/openlist-local"
[21:15:02] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:02 | 207 |       0s |       127.0.0.1 | PROPFIND  "/dav/openlist-local"
[21:15:14] [WARN] [openlist] failed get /openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt: failed to get obj: object not found
[21:15:14] [INFO] [openlist] ERRO[2026-09-10 21:15:14] HEAD /dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt object not found
[N/A] [INFO] [openlist] failed to get obj
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 404 |  506.1µs |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |   1.59ms |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 207 |       0s |       127.0.0.1 | PROPFIND  "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |  536.6µs |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 207 |       0s |       127.0.0.1 | PROPFIND  "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |  533.1µs |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |  529.4µs |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |  506.6µs |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 207 |       0s |       127.0.0.1 | PROPFIND  "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |  533.1µs |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 207 |       0s |       127.0.0.1 | PROPFIND  "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 201 |    524µs |       127.0.0.1 | PUT      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 200 |       0s |       127.0.0.1 | GET      "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 204 |       0s |       127.0.0.1 | DELETE   "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"
[21:15:14] [WARN] [openlist] failed get /openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt: failed to get obj: object not found
[21:15:14] [INFO] [openlist] ERRO[2026-09-10 21:15:14] HEAD /dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt object not found
[N/A] [INFO] [openlist] failed to get obj
[21:15:14] [INFO] [openlist] [GIN] 2026/09/10 - 21:15:14 | 404 |       0s |       127.0.0.1 | HEAD     "/dav/openlist-local/webdav-etag-probe-70f944bf753142f28832e83e4fae2058.txt"

配置文件内容（必填）

irrelevant

复现链接（可选）

No response

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