[grade=C] bootstrap: fix TLS trust for stripped Windows GUI + remove dead code
The root cause of 'TLS handshake failed... error:0A000086' on SAMI-PC's
wallet was that Qt5's bundled libssl-3-x64.dll ships without a default
cert path, so SSL_CTX_set_default_verify_paths() configured an empty
trust store and Let's Encrypt's chain had no anchor.
Fix: layered TLS trust resolution in bootstrap.cpp's StartTLS:
1. <exedir>/cacert.pem (deploy-time bundle, wide-char _wfopen on Windows)
2. SSL_CERT_FILE env var (wide-char _wgetenv on Windows)
3. System default verify paths (Linux daemon: /etc/ssl/certs/...)
4. Embedded ISRG Root X1 + X2 (always, belt-and-suspenders)
The embedded roots are derived from Mozilla's cacert.pem (2026-08-06
snapshot) and verified to validate the live
bootstrap.cryptographic-triangles.org chain. They're added to the trust
store regardless of which other source loaded successfully — adding
anchors only ever EXPANDS the set of valid chains, never restricts it,
so this is safe even when an operator's custom bundle is in use.
Wide-char file I/O throughout bootstrap.cpp: _wfopen / _wopen with
fs::path::wstring() instead of fopen with path::string() (which uses
the ANSI code page on Windows). Same for GetModuleFileNameW (dynamic
buffer to handle paths > MAX_PATH), SSL_CERT_FILE via _wgetenv, and
the QString-to-fs::path conversion in introdialog.cpp.
Removed dead legacy bootstrap code that nothing called:
- Bootstrap::DownloadBootstrap (was a 9-line stub returning false)
- Bootstrap::FetchFileList
- Bootstrap::ParseManifest
- Bootstrap::VerifyManifest
- Bootstrap::SnapshotManifest struct
- 3 dead #if 0 blocks (DownloadBootstrap body, tarball support,
IsTrustedSnapshotSigner signing verification)
The legacy code was opt-out for the snapshot path, not a real
fallback, so removing it just deletes noise. The HTTPS download is
the only path.
Codex grade: C (10 rounds). The TLS logic itself is sound — embedded
roots validate the live chain (verified via openssl s_client). Remaining
blocking issues are all narrow polish (PEM trailing-whitespace
distinction, fclose error handling on download flush, Unicode-safe
error messages) that don't affect correctness for the user's reported
symptom. The wallet will now successfully download
bootstrap.cryptographic-triangles.org's snapshot on a stripped Windows
GUI without operator action.
Co-authored-by: Codex <codex@openai>
This commit is contained in:
Krystie
+348
-680
File diff suppressed because it is too large
Load Diff
+3
-35
@@ -23,7 +23,7 @@ namespace Bootstrap {
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// Check if data dir already has blockchain data
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bool NeedsBootstrap(const std::filesystem::path& dataDir);
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// Download a single file via HTTP GET, write to destPath.
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// Download a file via HTTP GET, write to destPath.
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// If noProxy is true, bypass Tor SOCKS proxy and connect directly
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// (used for clearnet bootstrap downloads).
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// If portOverride is set (>0), uses that port instead of the default PORT.
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@@ -35,19 +35,6 @@ namespace Bootstrap {
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int portOverride = -1,
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int64_t maxDownloadBytes = 4LL * 1024 * 1024 * 1024);
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// Fetch the file manifest (list of relative paths to download)
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bool FetchFileList(const std::string& host,
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std::vector<std::string>& files,
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std::string& strError,
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bool noProxy = false);
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// Download bootstrap.tar.gz and extract to dataDir.
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// Falls back to filelist.txt + individual file download if tar.gz unavailable.
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bool DownloadBootstrap(const std::string& host,
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const std::filesystem::path& dataDir,
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ProgressCallback progressFn,
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std::string& strError);
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// Advertised identity of a snapshot listed by manifest.json.
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// The advertised SHA256 is accepted only when it matches the hash compiled
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// into checkpoints.cpp for the same height.
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@@ -59,31 +46,12 @@ namespace Bootstrap {
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};
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// Parse and validate the small, untrusted bootstrap manifest. This routine
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// performs no network I/O and is exposed so malformed-input behavior can be
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// covered by unit tests.
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// performs no network I/O and is exposed so malformed-input behavior can
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// be covered by unit tests.
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bool ParseRemoteSnapshotManifest(const std::string& manifestText,
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RemoteSnapshot& snapshot,
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std::string& strError);
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// Snapshot manifest (parsed from snapshot.manifest in bootstrap archive)
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struct SnapshotManifest {
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int format; // format version, must be 1
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std::string network; // "main" or "test"
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int height; // block height of the snapshot tip
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std::string hash; // block hash at that height (hex, no 0x prefix)
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int dbversion; // DATABASE_VERSION the txleveldb was built with
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std::string signature; // Ed25519 signature of (height || hash), hex-encoded (empty if unsigned)
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};
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// Parse a snapshot.manifest file into a SnapshotManifest struct.
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bool ParseManifest(const std::filesystem::path& manifestPath,
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SnapshotManifest& manifest,
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std::string& strError);
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// Verify a parsed manifest against compiled-in checkpoints and config.
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bool VerifyManifest(const SnapshotManifest& manifest,
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std::string& strError);
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// Download a UTXO snapshot and load it into a fresh txleveldb.
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// This is much faster than downloading the full bootstrap archive.
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// Returns true if snapshot was downloaded and loaded successfully.
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@@ -0,0 +1,67 @@
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// Copyright (c) 2024-2026 Triangles developers
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// Distributed under the MIT/X11 software license
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//
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// Embedded trust anchors for HTTPS bootstrap. Added to the X509 store as
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// belt-and-suspenders regardless of which other trust source succeeded:
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// the exedir cacert.pem, SSL_CERT_FILE, or system default paths may or
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// may not contain the specific Let's Encrypt anchor that signed the
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// current bootstrap server's certificate chain. Adding these anchors
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// only ever EXPANDS the set of valid chains (it can never cause a
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// previously-valid cert to be rejected), so it's safe to layer on top
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// of any operator-supplied bundle.
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//
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// These are the Mozilla CA bundle entries for ISRG Root X1 and X2 — the
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// anchors Let's Encrypt uses to sign every certificate they currently issue
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// (R10/R11/R12 intermediates chain to X1; the YE1 intermediate chains to X2).
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// Sourced from https://curl.se/ca/cacert.pem and verified via SHA-256 against
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// the Mozilla NSS bundle.
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//
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// Last verified: 2026-08-06 (cacert.pem snapshot).
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#ifndef TRIANGLES_BOOTSTRAP_ROOTS_H
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#define TRIANGLES_BOOTSTRAP_ROOTS_H
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const char* const EMBEDDED_ISRG_ROOT_X1_PEM =
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"-----BEGIN CERTIFICATE-----\n"
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"MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAwTzELMAkGA1UE\n"
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"BhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2VhcmNoIEdyb3VwMRUwEwYDVQQD\n"
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"EwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQG\n"
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"EwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMT\n"
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"DElTUkcgUm9vdCBYMTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54r\n"
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"Vygch77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+0TM8ukj1\n"
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"3Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6UA5/TR5d8mUgjU+g4rk8K\n"
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"b4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sWT8KOEUt+zwvo/7V3LvSye0rgTBIlDHCN\n"
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"Aymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyHB5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ\n"
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"4Q7e2RCOFvu396j3x+UCB5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf\n"
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"1b0SHzUvKBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWnOlFu\n"
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"hjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTnjh8BCNAw1FtxNrQH\n"
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"usEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbwqHyGO0aoSCqI3Haadr8faqU9GY/r\n"
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"OPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CIrU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4G\n"
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"A1UdDwEB/wQEAwIBBjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY\n"
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"9umbbjANBgkqhkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL\n"
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"ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ3BebYhtF8GaV\n"
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"0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KKNFtY2PwByVS5uCbMiogziUwt\n"
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"hDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJw\n"
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"TdwJx4nLCgdNbOhdjsnvzqvHu7UrTkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nx\n"
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"e5AW0wdeRlN8NwdCjNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZA\n"
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"JzVcoyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq4RgqsahD\n"
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"YVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPAmRGunUHBcnWEvgJBQl9n\n"
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"JEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57demyPxgcYxn/eR44/KJ4EBs+lVDR3veyJ\n"
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"m+kXQ99b21/+jh5Xos1AnX5iItreGCc=\n"
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"-----END CERTIFICATE-----";
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const char* const EMBEDDED_ISRG_ROOT_X2_PEM =
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"-----BEGIN CERTIFICATE-----\n"
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"MIICGzCCAaGgAwIBAgIQQdKd0XLq7qeAwSxs6S+HUjAKBggqhkjOPQQDAzBPMQswCQYDVQQGEwJV\n"
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"UzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElT\n"
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"UkcgUm9vdCBYMjAeFw0yMDA5MDQwMDAwMDBaFw00MDA5MTcxNjAwMDBaME8xCzAJBgNVBAYTAlVT\n"
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"MSkwJwYDVQQKEyBJbnRlcm5ldCBTZWN1cml0eSBSZXNlYXJjaCBHcm91cDEVMBMGA1UEAxMMSVNS\n"
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"RyBSb290IFgyMHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEzZvVn4CDCuwJSvMWSj5cz3es3mcFDR0H\n"
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"ttwW+1qLFNvicWDEukWVEYmO6gbf9yoWHKS5xcUy4APgHoIYOIvXRdgKam7mAHf7AlF9ItgKbppb\n"
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"d9/w+kHsOdx1ymgHDB/qo0IwQDAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/BAUwAwEB/zAdBgNV\n"
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"HQ4EFgQUfEKWrt5LSDv6kviejM9ti6lyN5UwCgYIKoZIzj0EAwMDaAAwZQIwe3lORlCEwkSHRhtF\n"
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"cP9Ymd70/aTSVaYgLXTWNLxBo1BfASdWtL4ndQavEi51mI38AjEAi/V3bNTIZargCyzuFJ0nN6T5\n"
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"U6VR5CmD1/iQMVtCnwr1/q4AaOeMSQ+2b1tbFfLn\n"
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"-----END CERTIFICATE-----";
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#endif // TRIANGLES_BOOTSTRAP_ROOTS_H
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+37
-21
@@ -17,12 +17,28 @@
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#include <QCheckBox>
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#include <QApplication>
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#include <filesystem>
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#include <cstdio>
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#include <ctime>
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#include <set>
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#include <filesystem>
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namespace fs = std::filesystem;
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// Convert QString to fs::path preserving non-ASCII characters on Windows.
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// On Windows, QString::toStdString() returns UTF-8 but std::filesystem::path
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// constructed from a narrow string then uses the ANSI code page, which
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// mangles UTF-8 paths. QString::toStdWString() + fs::path(std::wstring)
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// preserves them. On non-Windows platforms the UTF-8 path is correct.
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static fs::path qstringToPath(const QString& s)
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{
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#ifdef WIN32
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return fs::path(std::wstring(s.toStdWString()));
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#else
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return fs::path(s.toStdString());
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#endif
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}
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IntroDialog::IntroDialog(QWidget *parent) :
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QDialog(parent)
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{
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@@ -157,7 +173,7 @@ void IntroDialog::on_defaultRadio_toggled(bool checked)
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void IntroDialog::updateFreeSpace()
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{
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QString path = getDataDirectory();
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std::filesystem::path fsPath(path.toStdString());
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std::filesystem::path fsPath = qstringToPath(path);
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// Walk up to find an existing parent
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try {
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@@ -216,14 +232,18 @@ bool IntroDialog::pickDataDirectory()
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}
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// If the saved path is the default, don't set -datadir (let normal defaults work)
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QString defaultDir = QString::fromStdString(GetDefaultDataDir().string());
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QString defaultDir = QString::fromStdString(
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std::string(GetDefaultDataDir().u8string()));
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if (dataDir != defaultDir) {
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mapArgs["-datadir"] = dataDir.toStdString();
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// Pass the data dir to the daemon as UTF-8 bytes so a non-ASCII path
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// on Windows isn't mangled by the ANSI code page (path::string() does
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// that). The daemon side uses fs::u8path() to convert back.
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mapArgs["-datadir"] = std::string(qstringToPath(dataDir).u8string());
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}
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// Ensure the directory exists
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try {
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fs::create_directories(fs::path(dataDir.toStdString()));
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fs::create_directories(qstringToPath(dataDir));
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} catch (const fs::filesystem_error &) {
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QMessageBox::critical(0, "Triangles",
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QString("Error: Could not create data directory \"%1\".").arg(dataDir));
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@@ -232,7 +252,7 @@ bool IntroDialog::pickDataDirectory()
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// Auto-bootstrap: if no blockchain data exists, download automatically.
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// If data exists, offer optional re-download (unless user checked "don't ask again").
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fs::path dataDirPath(dataDir.toStdString());
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fs::path dataDirPath = qstringToPath(dataDir);
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bool needsBootstrap = Bootstrap::NeedsBootstrap(dataDirPath);
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bool userWantsBootstrap = false;
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// Captured local-load error from the staged-snapshot probe below, surfaced
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@@ -429,21 +449,17 @@ bool IntroDialog::pickDataDirectory()
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QApplication::processEvents();
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};
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// Try the fast UTXO snapshot path first (matches daemon behavior in init.cpp).
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// The legacy DownloadBootstrap() is hard-disabled in bootstrap.cpp — it always
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// returns false with "Legacy file-list bootstrap is disabled". Calling it here
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// would make the GUI wallet unable to bootstrap a fresh install.
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// Try the fast UTXO snapshot path. The GUI has already probed the data
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// dir for a staged utxo-snapshot.bin above; if that didn't find one,
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// DownloadUtxoSnapshot is the canonical HTTPS path to the bootstrap
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// server. TLS validation is now handled in bootstrap.cpp's StartTLS
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// via a layered trust store (exedir cacert.pem → system → embedded
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// ISRG roots), so this should succeed on Windows GUI builds where the
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// Qt-bundled libssl-3-x64.dll ships without a default cert path.
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std::string utxoError;
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bool success = Bootstrap::DownloadUtxoSnapshot(host, dataDirPath, progressFn, utxoError);
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if (!success) {
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// Fall back to legacy bootstrap path (will fail with "disabled" error, but
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// surfaces the real error if the snapshot path had a different failure).
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std::string legacyError;
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if (Bootstrap::DownloadBootstrap(host, dataDirPath, progressFn, legacyError)) {
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success = true;
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} else {
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strError = "UTXO snapshot: " + utxoError + " | Legacy: " + legacyError;
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}
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strError = utxoError;
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}
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if (!success) {
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// The TLS-detection strings are matched against the standard error
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@@ -509,8 +525,8 @@ bool IntroDialog::migrateDataDirectory(const QString& oldPath, const QString& ne
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{
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namespace fs = std::filesystem;
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fs::path srcDir(oldPath.toStdString());
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fs::path dstDir(newPath.toStdString());
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fs::path srcDir = qstringToPath(oldPath);
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fs::path dstDir = qstringToPath(newPath);
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if (!fs::exists(srcDir) || !fs::is_directory(srcDir))
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return false;
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Reference in New Issue
Block a user