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author | Wladimir J. van der Laan <laanwj@gmail.com> | 2018-10-19 00:56:39 +0200 |
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committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2018-10-19 01:01:17 +0200 |
commit | 8eb2cd1ddaab6ec75b8ba02b353b260094798cd4 (patch) | |
tree | e73a13ed0bfcc898333194c686cc1ccb4e6d62e8 /src/wallet/walletutil.cpp | |
parent | 3715b2489e986c27efd1dbd249d3604c3acd27b2 (diff) | |
parent | d56a0689354fb814510c6c393f3e07ac9362dc1f (diff) | |
download | bitcoin-8eb2cd1ddaab6ec75b8ba02b353b260094798cd4.tar.xz |
Merge #14291: wallet: Add ListWalletDir utility function
d56a0689354fb814510c6c393f3e07ac9362dc1f docs: Add release notes for listwalletdir RPC (João Barbosa)
0cb3cad166bbeb75e9cc1512286453f8e7d4f717 qa: Add tests for listwalletdir RPC (João Barbosa)
cc3377360c417780f5cbd7bd69b438817a9d60be rpc: Add listwalletdir RPC (João Barbosa)
d1b03b8e5f04a2cc9ebb985bd9a1aebd2068f757 interfaces: Add getWalletDir and listWalletDir to Node (João Barbosa)
fc4db35bfd78d85d6b52d5da3d89696160658450 wallet: Add ListWalletDir utility (João Barbosa)
Pull request description:
`ListWalletDir` returns all available wallets in the current wallet directory.
Based on MeshCollider work in pull #11485.
Tree-SHA512: 5843e3dbd1e0449f55bb8ea7c241a536078ff6ffcaad88ce5fcf8963971d48c78600fbc4f44919523b8a92329d5d8a5f567a3e0ccb0270fdd27366e19603a716
Diffstat (limited to 'src/wallet/walletutil.cpp')
-rw-r--r-- | src/wallet/walletutil.cpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/wallet/walletutil.cpp b/src/wallet/walletutil.cpp index 34c76ec4c4..c0c9afe13e 100644 --- a/src/wallet/walletutil.cpp +++ b/src/wallet/walletutil.cpp @@ -4,6 +4,8 @@ #include <wallet/walletutil.h> +#include <util.h> + fs::path GetWalletDir() { fs::path path; @@ -25,3 +27,51 @@ fs::path GetWalletDir() return path; } + +static bool IsBerkeleyBtree(const fs::path& path) +{ + // A Berkeley DB Btree file has at least 4K. + // This check also prevents opening lock files. + boost::system::error_code ec; + if (fs::file_size(path, ec) < 4096) return false; + + fs::ifstream file(path.string(), std::ios::binary); + if (!file.is_open()) return false; + + file.seekg(12, std::ios::beg); // Magic bytes start at offset 12 + uint32_t data = 0; + file.read((char*) &data, sizeof(data)); // Read 4 bytes of file to compare against magic + + // Berkeley DB Btree magic bytes, from: + // https://github.com/file/file/blob/5824af38469ec1ca9ac3ffd251e7afe9dc11e227/magic/Magdir/database#L74-L75 + // - big endian systems - 00 05 31 62 + // - little endian systems - 62 31 05 00 + return data == 0x00053162 || data == 0x62310500; +} + +std::vector<fs::path> ListWalletDir() +{ + const fs::path wallet_dir = GetWalletDir(); + std::vector<fs::path> paths; + + for (auto it = fs::recursive_directory_iterator(wallet_dir); it != end(it); ++it) { + if (it->status().type() == fs::directory_file && IsBerkeleyBtree(it->path() / "wallet.dat")) { + // Found a directory which contains wallet.dat btree file, add it as a wallet. + paths.emplace_back(fs::relative(it->path(), wallet_dir)); + } else if (it.level() == 0 && it->symlink_status().type() == fs::regular_file && IsBerkeleyBtree(it->path())) { + if (it->path().filename() == "wallet.dat") { + // Found top-level wallet.dat btree file, add top level directory "" + // as a wallet. + paths.emplace_back(); + } else { + // Found top-level btree file not called wallet.dat. Current bitcoin + // software will never create these files but will allow them to be + // opened in a shared database environment for backwards compatibility. + // Add it to the list of available wallets. + paths.emplace_back(fs::relative(it->path(), wallet_dir)); + } + } + } + + return paths; +} |