Branch data Line data Source code
1 : : // Copyright (c) 2023 The Bitcoin Core developers
2 : : // Distributed under the MIT software license, see the accompanying
3 : : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 : :
5 : : #include <chainparams.h>
6 : : #include <common/args.h>
7 : : #include <common/init.h>
8 : : #include <logging.h>
9 : : #include <tinyformat.h>
10 : : #include <util/fs.h>
11 : : #include <util/translation.h>
12 : :
13 : : #include <algorithm>
14 : : #include <exception>
15 : : #include <optional>
16 : :
17 : : namespace common {
18 : 0 : std::optional<ConfigError> InitConfig(ArgsManager& args, SettingsAbortFn settings_abort_fn)
19 : : {
20 : 0 : try {
21 [ # # # # ]: 0 : if (!CheckDataDirOption(args)) {
22 [ # # # # : 0 : return ConfigError{ConfigStatus::FAILED, strprintf(_("Specified data directory \"%s\" does not exist."), args.GetArg("-datadir", ""))};
# # # # #
# ]
23 : : }
24 : :
25 : : // Record original datadir and config paths before parsing the config
26 : : // file. It is possible for the config file to contain a datadir= line
27 : : // that changes the datadir path after it is parsed. This is useful for
28 : : // CLI tools to let them use a different data storage location without
29 : : // needing to pass it every time on the command line. (It is not
30 : : // possible for the config file to cause another configuration to be
31 : : // used, though. Specifying a conf= option in the config file causes a
32 : : // parse error, and specifying a datadir= location containing another
33 : : // bitcoin.conf file just ignores the other file.)
34 [ # # ]: 0 : const fs::path orig_datadir_path{args.GetDataDirBase()};
35 [ # # # # : 0 : const fs::path orig_config_path{AbsPathForConfigVal(args, args.GetPathArg("-conf", BITCOIN_CONF_FILENAME), /*net_specific=*/false)};
# # # # ]
36 : :
37 [ # # ]: 0 : std::string error;
38 [ # # # # ]: 0 : if (!args.ReadConfigFiles(error, true)) {
39 [ # # # # ]: 0 : return ConfigError{ConfigStatus::FAILED, strprintf(_("Error reading configuration file: %s"), error)};
40 : : }
41 : :
42 : : // Check for chain settings (Params() calls are only valid after this clause)
43 [ # # # # ]: 0 : SelectParams(args.GetChainType());
44 : :
45 : : // Create datadir if it does not exist.
46 [ # # ]: 0 : const auto base_path{args.GetDataDirBase()};
47 [ # # # # ]: 0 : if (!fs::exists(base_path)) {
48 : : // When creating a *new* datadir, also create a "wallets" subdirectory,
49 : : // whether or not the wallet is enabled now, so if the wallet is enabled
50 : : // in the future, it will use the "wallets" subdirectory for creating
51 : : // and listing wallets, rather than the top-level directory where
52 : : // wallets could be mixed up with other files. For backwards
53 : : // compatibility, wallet code will use the "wallets" subdirectory only
54 : : // if it already exists, but never create it itself. There is discussion
55 : : // in https://github.com/bitcoin/bitcoin/issues/16220 about ways to
56 : : // change wallet code so it would no longer be necessary to create
57 : : // "wallets" subdirectories here.
58 [ # # # # : 0 : fs::create_directories(base_path / "wallets");
# # ]
59 : : }
60 [ # # ]: 0 : const auto net_path{args.GetDataDirNet()};
61 [ # # # # ]: 0 : if (!fs::exists(net_path)) {
62 [ # # # # : 0 : fs::create_directories(net_path / "wallets");
# # ]
63 : : }
64 : :
65 : : // Show an error or warning if there is a bitcoin.conf file in the
66 : : // datadir that is being ignored.
67 [ # # # # ]: 0 : const fs::path base_config_path = base_path / BITCOIN_CONF_FILENAME;
68 [ # # # # : 0 : if (fs::exists(base_config_path) && !fs::equivalent(orig_config_path, base_config_path)) {
# # # # ]
69 [ # # # # : 0 : const std::string cli_config_path = args.GetArg("-conf", "");
# # ]
70 [ # # ]: 0 : const std::string config_source = cli_config_path.empty()
71 [ # # # # : 0 : ? strprintf("data directory %s", fs::quoted(fs::PathToString(orig_datadir_path)))
# # # # ]
72 [ # # # # : 0 : : strprintf("command line argument %s", fs::quoted("-conf=" + cli_config_path));
# # ]
73 [ # # ]: 0 : const std::string error = strprintf(
74 : : "Data directory %1$s contains a %2$s file which is ignored, because a different configuration file "
75 : : "%3$s from %4$s is being used instead. Possible ways to address this would be to:\n"
76 : : "- Delete or rename the %2$s file in data directory %1$s.\n"
77 : : "- Change datadir= or conf= options to specify one configuration file, not two, and use "
78 : : "includeconf= to include any other configuration files.\n"
79 : : "- Set allowignoredconf=1 option to treat this condition as a warning, not an error.",
80 [ # # ]: 0 : fs::quoted(fs::PathToString(base_path)),
81 [ # # # # ]: 0 : fs::quoted(BITCOIN_CONF_FILENAME),
82 [ # # ]: 0 : fs::quoted(fs::PathToString(orig_config_path)),
83 [ # # ]: 0 : config_source);
84 [ # # # # : 0 : if (args.GetBoolArg("-allowignoredconf", false)) {
# # ]
85 [ # # ]: 0 : LogPrintf("Warning: %s\n", error);
86 : : } else {
87 [ # # # # ]: 0 : return ConfigError{ConfigStatus::FAILED, Untranslated(error)};
88 : : }
89 : 0 : }
90 : :
91 : : // Create settings.json if -nosettings was not specified.
92 [ # # # # ]: 0 : if (args.GetSettingsPath()) {
93 : 0 : std::vector<std::string> details;
94 [ # # # # ]: 0 : if (!args.ReadSettingsFile(&details)) {
95 [ # # ]: 0 : const bilingual_str& message = _("Settings file could not be read");
96 [ # # ]: 0 : if (!settings_abort_fn) {
97 [ # # # # ]: 0 : return ConfigError{ConfigStatus::FAILED, message, details};
98 [ # # # # ]: 0 : } else if (settings_abort_fn(message, details)) {
99 [ # # # # ]: 0 : return ConfigError{ConfigStatus::ABORTED, message, details};
100 : : } else {
101 : 0 : details.clear(); // User chose to ignore the error and proceed.
102 : : }
103 : 0 : }
104 [ # # # # ]: 0 : if (!args.WriteSettingsFile(&details)) {
105 [ # # ]: 0 : const bilingual_str& message = _("Settings file could not be written");
106 [ # # # # ]: 0 : return ConfigError{ConfigStatus::FAILED_WRITE, message, details};
107 : 0 : }
108 : 0 : }
109 [ # # ]: 0 : } catch (const std::exception& e) {
110 [ - - - - ]: 0 : return ConfigError{ConfigStatus::FAILED, Untranslated(e.what())};
111 : 0 : }
112 : 0 : return {};
113 : : }
114 : : } // namespace common
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