path: strip extended-length path prefix in C++ PathResolve and JS win32.resolve#2
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…2.resolve (JS) Move the fix for Windows extended-length path prefix handling from lib/fs.js to the C++ PathResolve function (src/path.cc) and the JS path.resolve function (lib/path.js). The \\?\ prefix is a Win32 API mechanism for bypassing MAX_PATH limits. When path.resolve encounters paths like \\?\C:\foo or \\?\UNC\server\share, it should strip the prefix and resolve the underlying standard path. Device paths like \\?\PHYSICALDRIVE0 are left unchanged. This fix addresses the root cause in the path resolution layer rather than working around it in fs.realpathSync/realpath. Agent-Logs-Url: https://github.com/jazelly/node/sessions/b73cebf2-9b87-42a3-a50e-c5da1b454971 Co-authored-by: jazelly <28685065+jazelly@users.noreply.github.com>
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This function call can fail with `Z_VERSION_ERROR` if the compiled
library vs loaded library mismatched in version number or in
stream structure size.
In those cases, zlib doesn't initialize the `strm_.msg` field to
null. Therefore, when a `CompressionError` object is created via
`ErrorForMessage()`, it can read a stale or uninitialized `strm_.msg`
pointer that will cause a crash.
Example ASAN report:
```
AddressSanitizer: SEGV on unknown address
#0 __strlen_avx2
string/../sysdeps/x86_64/multiarch/strlen-avx2.S:76
#1 strlen (/work/node/out/Debug/node+0x1a42ab7)
#2 v8::(anonymous namespace)::StringLength(char const*)
/work/node/out/../deps/v8/src/api/api.cc:7581:16
nodejs#3 v8::(anonymous namespace)::StringLength(unsigned char const*)
/work/node/out/../deps/v8/src/api/api.cc:7587:10
nodejs#4 v8::String::NewFromOneByte(v8::Isolate*,
unsigned char const*, v8::NewStringType, int)
/work/node/out/../deps/v8/src/api/api.cc:7677:3
nodejs#5 node::OneByteString(v8::Isolate*,
char const*, int, v8::NewStringType)
/work/node/out/../src/util-inl.h:166:10
nodejs#6 node::(anonymous namespace)::CompressionStream<
node::(anonymous namespace)::ZlibContext>
::EmitError(node::(anonymous namespace)
::CompressionError const&)
/work/node/out/../src/node_zlib.cc:565:7
nodejs#7 node::(anonymous namespace)::CompressionStream<
node::(anonymous namespace)::ZlibContext>
::CheckError()
/work/node/out/../src/node_zlib.cc:519:5
nodejs#8 node::(anonymous namespace)::CompressionStream<
node::(anonymous namespace)::ZlibContext>
::AfterThreadPoolWork(int)
/work/node/out/../src/node_zlib.cc:543:10
nodejs#9 node::ThreadPoolWork::ScheduleWork()
::'lambda'(uv_work_s*, int)
::operator()(uv_work_s*, int) const
/work/node/out/../src/threadpoolwork-inl.h:57:15
nodejs#10 node::ThreadPoolWork::ScheduleWork()
::'lambda'(uv_work_s*, int)
::__invoke(uv_work_s*, int)
/work/node/out/../src/threadpoolwork-inl.h:48:7
nodejs#11 uv__work_done /work/libuv-1.51.0/src/threadpool.c:330:5
nodejs#12 uv__async_io.part.0
/work/libuv-1.51.0/src/unix/async.c:208:5
```
Signed-off-by: ndossche <nora.dossche@ugent.be>
PR-URL: nodejs#63476
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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StripExtendedPathPrefixhelper tosrc/path.ccthat strips\\?\C:\...→C:\...and\\?\UNC\...→\\...(leaving device paths unchanged)PathResolvefor each input pathlib/path.jswin32.resolveto keep JS/C++ in synclib/fs.js(removestripExtendedPathPrefixand all call sites)test/parallel/test-fs-realpath-extended-windows-path.js(replaced by C++ tests)test/cctest/test_path.ccfor extended-length path resolutiontest/parallel/test-path-resolve.js