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fix: Fix broken case for relative symlinks

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Currently, the game will have issues saving files to a relative symlink (for example, when a .DAT file is a symlink pointing to ../CHR_12345/HOTBAR.DAT). This change replaces the symlink resolution system with one that calls `weakly_canonical` to resolve and clean up the path in a single operation.
This commit is contained in:
Kaz Wolfe 2023-01-07 15:31:52 -08:00
parent 9b066fde01
commit e6beb2a19e
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GPG key ID: 258813F53A16EBB4
1 changed files with 7 additions and 7 deletions
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12
Dalamud.Boot/xivfixes.cpp
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@ -437,13 +437,13 @@ void xivfixes::backup_userdata_save(bool bApply) {
if (ext != ".dat" && ext != ".cfg")
return s_hookCreateFileW->call_original(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
for (auto i = 0; i < 16; i++) {
// Resolve any symbolic links or shenanigans in the chain so that we'll always be working with a canonical
// file. If there's an error getting the canonical path, fall back to default behavior and ignore our
// fancy logic. We use weakly_canonical here so that we don't run into issues if `path` does not exist.
std::error_code ec;
auto resolved = read_symlink(path, ec);
if (ec || resolved == path)
break;
path = std::move(resolved);
}
path = weakly_canonical(path, ec);
if (ec)
return s_hookCreateFileW->call_original(lpFileName, dwDesiredAccess, dwShareMode, lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
std::filesystem::path temporaryPath = path;
temporaryPath.replace_extension(std::format(L"{}.new.{:X}.{:X}", path.extension().c_str(), std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::system_clock::now().time_since_epoch()).count(), GetCurrentProcessId()));