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fix(util): use the POSIX daemon binary name, scan versions off-thread

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The installed-daemon lookup built the binary path from the Windows
resource key "dragonxd.exe", which never exists on Linux or macOS, so
the installed full node was never found there. The version scan also
read the whole binary, now around 200 MB, into memory on the UI thread.

- A new DAEMON_BINARY_NAME gives the daemon's file name on this platform
  ("dragonxd" on POSIX, "dragonxd.exe" on Windows); the old resource
  constant stays only as the embedded-table key. The installed daemon is
  now found on POSIX.
- The version-stamp scan streams the file in 4 MiB chunks with bounded
  memory, carrying bytes across each boundary so a stamp straddling it is
  neither cut short nor missed, and stops at the first match. The result
  is cached by path, size and mtime, so only a changed binary is
  rescanned.
- Settings stats the binary on the UI thread but runs the streamed scan
  on a worker, guarded so a new scan is not started while one is still
  running (the future blocks in its destructor), and the version fills
  in when it lands.

Tests: the POSIX path and binary name, a version stamp in a small file,
a stamp straddling the 4 MiB chunk boundary, and a file with no stamp.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
DanS
2026-10-12 21:42:23 -05:00
co-authored by Claude Opus 4.8
parent 21dc874988
commit abc82136c4
4 changed files with 117 additions and 17 deletions
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src/resources/embedded_resources.h
+7 -1
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@@ -112,7 +112,13 @@ std::string ensureWalletRebuildHelperExtracted();
constexpr const char* RESOURCE_SAPLING_SPEND = "sapling-spend.params";
constexpr const char* RESOURCE_SAPLING_OUTPUT = "sapling-output.params";
constexpr const char* RESOURCE_ASMAP = "asmap.dat";
constexpr const char* RESOURCE_DRAGONXD = "dragonxd.exe";
constexpr const char* RESOURCE_DRAGONXD = "dragonxd.exe"; // embedded-resource table key (Windows builds only)
// The daemon binary's file name on THIS platform. Use it to build paths; RESOURCE_DRAGONXD is only the table key.
#ifdef _WIN32
constexpr const char* DAEMON_BINARY_NAME = "dragonxd.exe";
#else
constexpr const char* DAEMON_BINARY_NAME = "dragonxd";
#endif
constexpr const char* RESOURCE_DRAGONX_CLI = "dragonx-cli.exe";
constexpr const char* RESOURCE_DRAGONX_TX = "dragonx-tx.exe";
constexpr const char* RESOURCE_DRAGONX_WALLET_REBUILD = "dragonx-wallet-rebuild.exe";