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configfileparser.cpp
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/*
This file is part of FlashMQ (https://www.flashmq.org)
Copyright (C) 2021-2023 Wiebe Cazemier
FlashMQ is free software: you can redistribute it and/or modify
it under the terms of The Open Software License 3.0 (OSL-3.0).
See LICENSE for license details.
*/
#include "configfileparser.h"
#include <fcntl.h>
#include <unistd.h>
#include <sstream>
#include <fstream>
#include <regex>
#include <sys/stat.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include "exceptions.h"
#include "utils.h"
#include "globber.h"
/**
* @brief Like std::stoi, but demands that the entire value is consumed
* @param key Unused except for informing the user in case of problems
* @param value the string to parse
* @return the parsed integer
*/
int full_stoi(const std::string &key, const std::string &value)
{
size_t ptr;
int newVal = std::stoi(value, &ptr);
if (ptr != value.length())
{
throw ConfigFileException(formatString("%s's value of '%s' can't be parsed to a number", key.c_str(), value.c_str()));
}
return newVal;
}
/**
* @brief Like std::stoul, but demands that the entire value is consumed
* @param key Unused except for informing the user in case of problems
* @param value the string to parse
* @return the parsed unsigned long
**/
unsigned long full_stoul(const std::string &key, const std::string &value)
{
size_t ptr;
unsigned long newVal = std::stoul(value, &ptr);
if (ptr != value.length())
{
throw ConfigFileException(formatString("%s's value of '%s' can't be parsed to a number", key.c_str(), value.c_str()));
}
return newVal;
}
void ConfigFileParser::testCorrectNumberOfValues(const std::string &key, size_t expected_values, const std::vector<std::string> &values)
{
if (values.size() != expected_values)
{
std::ostringstream oss;
oss << "Option " << key << " expected " << expected_values << ", got " << values.size() << " arguments";
if (values.size() > expected_values)
{
oss << ". Superflous ones: ";
for (size_t i = expected_values; i < values.size(); i++)
{
const std::string &rest = values.at(i);
oss << rest;
if (i + 1 >= values.size())
oss << ".";
else
oss << ", ";
}
}
throw ConfigFileException(oss.str());
}
}
/**
* @brief ConfigFileParser::testKeyValidity tests if two strings match and whether it's a valid config key.
* @param key
* @param matchKey
* @param validKeys
* @return
*
* Use of this function prevents adding config keys that you forget to add to the sets with valid keys.
*/
bool ConfigFileParser::testKeyValidity(const std::string &key, const std::string &matchKey, const std::set<std::string> &validKeys) const
{
auto valid_key_it = validKeys.find(key);
if (valid_key_it == validKeys.end())
{
std::ostringstream oss;
oss << "Config key '" << key << "' is not valid (here).";
auto alternative = findCloseStringMatch(validKeys.begin(), validKeys.end(), key);
if (alternative != validKeys.end())
{
// The space before the question mark is to make copying using mouse-double-click possible.
oss << " Did you mean: " << *alternative << " ?";
}
throw ConfigFileException(oss.str());
}
{
auto valid_key_it = validKeys.find(matchKey);
if (valid_key_it == validKeys.end())
{
std::ostringstream oss;
oss << "BUG: you still need to add '" << matchKey << "' as valid config key.";
throw ConfigFileException(oss.str());
}
}
return key == matchKey;
}
void ConfigFileParser::checkFileExistsAndReadable(const std::string &key, const std::string &pathToCheck, ssize_t max_size)
{
if (access(pathToCheck.c_str(), R_OK) != 0)
{
std::ostringstream oss;
oss << "Error for '" << key << "': " << pathToCheck << " is not there or not readable";
throw ConfigFileException(oss.str());
}
struct stat statbuf;
memset(&statbuf, 0, sizeof(struct stat));
if (stat(pathToCheck.c_str(), &statbuf) < 0)
throw ConfigFileException(formatString("Reading stat of '%s' failed.", pathToCheck.c_str()));
if (!S_ISREG(statbuf.st_mode))
{
throw ConfigFileException(formatString("Error for '%s': '%s' is not a regular file.", key.c_str(), pathToCheck.c_str()));
}
if (statbuf.st_size > max_size)
{
throw ConfigFileException(formatString("Error for '%s': '%s' is bigger than %zd bytes.", key.c_str(), pathToCheck.c_str(), max_size));
}
}
void ConfigFileParser::checkFileOrItsDirWritable(const std::string &filepath)
{
if (access(filepath.c_str(), F_OK) == 0)
{
if (access(filepath.c_str(), W_OK) != 0)
{
std::string msg = formatString("File '%s' is there, but not writable", filepath.c_str());
throw ConfigFileException(msg);
}
return;
}
std::string dirname(dirnameOf(filepath));
if (access(dirname.c_str(), W_OK) != 0)
{
std::string msg = formatString("File '%s' is not there and can't be created, because '%s' is also not writable", filepath.c_str(), dirname.c_str());
throw ConfigFileException(msg);
}
}
void ConfigFileParser::checkDirExists(const std::string &key, const std::string &dir)
{
struct stat statbuf;
memset(&statbuf, 0, sizeof(struct stat));
if (stat(dir.c_str(), &statbuf) < 0)
throw ConfigFileException(formatString("Error for '%s': path '%s' does not exist or reading stat failed.", key.c_str(), dir.c_str()));
if (!S_ISDIR(statbuf.st_mode))
{
throw ConfigFileException(formatString("Error for '%s': '%s' is not a directory.", key.c_str(), dir.c_str()));
}
}
ConfigFileParser::ConfigFileParser(const std::string &path) :
path(path)
{
validKeys.insert("plugin");
validKeys.insert("plugin_serialize_init");
validKeys.insert("plugin_serialize_auth_checks");
validKeys.insert("plugin_timer_period");
validKeys.insert("log_file");
validKeys.insert("quiet");
validKeys.insert("allow_unsafe_clientid_chars");
validKeys.insert("allow_unsafe_username_chars");
validKeys.insert("client_initial_buffer_size");
validKeys.insert("max_packet_size");
validKeys.insert("log_debug");
validKeys.insert("log_subscriptions");
validKeys.insert("log_level");
validKeys.insert("mosquitto_password_file");
validKeys.insert("mosquitto_acl_file");
validKeys.insert("allow_anonymous");
validKeys.insert("rlimit_nofile");
validKeys.insert("expire_sessions_after_seconds");
validKeys.insert("thread_count");
validKeys.insert("storage_dir");
validKeys.insert("max_qos_msg_pending_per_client");
validKeys.insert("max_qos_bytes_pending_per_client");
validKeys.insert("wills_enabled");
validKeys.insert("retained_messages_mode");
validKeys.insert("retained_messages_node_limit");
validKeys.insert("expire_retained_messages_after_seconds");
validKeys.insert("retained_message_node_lifetime");
validKeys.insert("expire_retained_messages_time_budget_ms");
validKeys.insert("websocket_set_real_ip_from");
validKeys.insert("shared_subscription_targeting");
validKeys.insert("max_incoming_topic_alias_value");
validKeys.insert("max_outgoing_topic_alias_value");
validKeys.insert("client_max_write_buffer_size");
validKeys.insert("retained_messages_delivery_limit");
validKeys.insert("include_dir");
validKeys.insert("rebuild_subscription_tree_interval_seconds");
validKeys.insert("minimum_wildcard_subscription_depth");
validKeys.insert("wildcard_subscription_deny_mode");
validKeys.insert("zero_byte_username_is_anonymous");
validKeys.insert("overload_mode");
validKeys.insert("max_event_loop_drift");
validKeys.insert("set_retained_message_defer_timeout");
validKeys.insert("set_retained_message_defer_timeout_spread");
validKeys.insert("save_state_interval");
validKeys.insert("subscription_node_lifetime");
validKeys.insert("subscription_identifiers_enabled");
validListenKeys.insert("port");
validListenKeys.insert("protocol");
validListenKeys.insert("fullchain");
validListenKeys.insert("privkey");
validListenKeys.insert("inet_protocol");
validListenKeys.insert("inet4_bind_address");
validListenKeys.insert("inet6_bind_address");
validListenKeys.insert("haproxy");
validListenKeys.insert("client_verification_ca_file");
validListenKeys.insert("client_verification_ca_dir");
validListenKeys.insert("client_verification_still_do_authn");
validListenKeys.insert("allow_anonymous");
validListenKeys.insert("tcp_nodelay");
validListenKeys.insert("minimum_tls_version");
validBridgeKeys.insert("local_username");
validBridgeKeys.insert("remote_username");
validBridgeKeys.insert("remote_password");
validBridgeKeys.insert("remote_clean_start");
validBridgeKeys.insert("remote_session_expiry_interval");
validBridgeKeys.insert("remote_retain_available");
validBridgeKeys.insert("local_clean_start");
validBridgeKeys.insert("local_session_expiry_interval");
validBridgeKeys.insert("subscribe");
validBridgeKeys.insert("publish");
validBridgeKeys.insert("clientid_prefix");
validBridgeKeys.insert("use_saved_clientid");
validBridgeKeys.insert("inet_protocol");
validBridgeKeys.insert("address");
validBridgeKeys.insert("fullchain");
validBridgeKeys.insert("privkey");
validBridgeKeys.insert("ca_file");
validBridgeKeys.insert("ca_dir");
validBridgeKeys.insert("port");
validBridgeKeys.insert("tls");
validBridgeKeys.insert("protocol_version");
validBridgeKeys.insert("bridge_protocol_bit");
validBridgeKeys.insert("keepalive");
validBridgeKeys.insert("max_outgoing_topic_aliases");
validBridgeKeys.insert("max_incoming_topic_aliases");
validBridgeKeys.insert("tcp_nodelay");
validBridgeKeys.insert("local_prefix");
validBridgeKeys.insert("remote_prefix");
validBridgeKeys.insert("minimum_tls_version");
}
std::list<std::string> ConfigFileParser::readFileRecursively(const std::string &path) const
{
std::list<std::string> lines;
if (path.empty())
return lines;
checkFileExistsAndReadable("application config file", path, 1024*1024*10);
std::ifstream infile(path, std::ios::in);
if (!infile.is_open())
{
std::ostringstream oss;
oss << "Error loading " << path;
throw ConfigFileException(oss.str());
}
for(std::string line; getline(infile, line ); )
{
lines.push_back(line);
if (strContains(line, "include_dir"))
{
std::smatch matches;
if (std::regex_match(line, matches, key_value_regex))
{
const std::string key = matches[1].str();
const std::string value = matches[2].str();
if (key == "include_dir")
{
Logger *logger = Logger::getInstance();
checkDirExists(key, value);
Globber globber;
std::vector<std::string> files = globber.getGlob(value + "/*.conf");
if (files.empty())
{
logger->logf(LOG_WARNING, "Including '%s' yielded 0 files.", value.c_str());
}
for(const std::string &path_from_glob : files)
{
std::list<std::string> newLines = readFileRecursively(path_from_glob);
lines.insert(lines.cend(), newLines.begin(), newLines.end());
}
}
}
}
}
return lines;
}
void ConfigFileParser::loadFile(bool test)
{
if (path.empty())
return;
const std::list<std::string> unprocessed_lines = readFileRecursively(path);
std::list<std::string> lines;
bool inBlock = false;
std::ostringstream oss;
int linenr = 0;
// First parse the file and keep the valid lines.
for (std::string line : unprocessed_lines)
{
trim(line);
linenr++;
if (startsWith(line, "#"))
continue;
if (line.empty())
continue;
// The regex matcher can be made to crash on very long lines, so we're protecting ourselves.
if (line.length() > 256)
{
throw ConfigFileException(formatString("Error at line %d in '%s': line suspiciouly long.", linenr, path.c_str()));
}
std::smatch matches;
const bool blockStartMatch = std::regex_search(line, matches, block_regex_start);
const bool blockEndMatch = std::regex_search(line, matches, block_regex_end);
if ((blockStartMatch && inBlock) || (blockEndMatch && !inBlock))
{
oss << "Unexpected block start or end at line " << linenr << ": " << line;
throw ConfigFileException(oss.str());
}
if (!std::regex_search(line, matches, key_value_regex) && !blockStartMatch && !blockEndMatch)
{
oss << "Line '" << line << "' invalid";
throw ConfigFileException(oss.str());
}
if (blockStartMatch)
inBlock = true;
if (blockEndMatch)
inBlock = false;
lines.push_back(line);
}
if (inBlock)
{
throw ConfigFileException("Unclosed config block. Expecting }");
}
std::unordered_map<std::string, std::string> pluginOpts;
ConfigParseLevel curParseLevel = ConfigParseLevel::Root;
std::shared_ptr<Listener> curListener;
std::shared_ptr<BridgeConfig> curBridge;
Settings tmpSettings;
const std::set<std::string> blockNames {"listen", "bridge"};
// Then once we know the config file is valid, process it.
for (std::string &line : lines)
{
std::smatch matches;
if (std::regex_match(line, matches, block_regex_start))
{
const std::string &key = matches[1].str();
if (testKeyValidity(key, "listen", blockNames))
{
curParseLevel = ConfigParseLevel::Listen;
curListener = std::make_shared<Listener>();
}
else if (testKeyValidity(key, "bridge", blockNames))
{
curParseLevel = ConfigParseLevel::Bridge;
curBridge = std::make_unique<BridgeConfig>();
}
else
{
std::ostringstream oss;
oss << "'" << key << "' is not a valid block.";
auto alt = findCloseStringMatch(blockNames.begin(), blockNames.end(), key);
if (alt != blockNames.end())
{
oss << " Did you mean: " << *alt << " ?";
}
throw ConfigFileException(oss.str());
}
continue;
}
else if (std::regex_match(line, matches, block_regex_end))
{
if (curParseLevel == ConfigParseLevel::Listen)
{
curListener->isValid();
tmpSettings.listeners.push_back(curListener);
curListener.reset();
}
else if (curParseLevel == ConfigParseLevel::Bridge)
{
curBridge->isValid();
tmpSettings.bridges.push_back(std::move(curBridge));
}
curParseLevel = ConfigParseLevel::Root;
continue;
}
std::regex_match(line, matches, key_value_regex);
std::string key = matches[1].str();
const std::string value_unparsed = matches[2].str();
const std::vector<std::string> values = parseValuesWithOptionalQuoting<ConfigFileException>(value_unparsed);
const std::string &value = values.at(0);
size_t number_of_expected_values = 1; // Most lines only accept 1 argument, a select few 2.
std::string valueTrimmed = value;
trim(valueTrimmed);
try
{
if (curParseLevel == ConfigParseLevel::Listen)
{
if (testKeyValidity(key, "protocol", validListenKeys))
{
if (value != "mqtt" && value != "websockets")
throw ConfigFileException(formatString("Protocol '%s' is not a valid listener protocol", value.c_str()));
curListener->websocket = value == "websockets";
}
else if (testKeyValidity(key, "port", validListenKeys))
{
curListener->port = full_stoi(key, value);
}
else if (testKeyValidity(key, "fullchain", validListenKeys))
{
checkFileExistsAndReadable("SSL fullchain", value, 1024*1024);
curListener->sslFullchain = value;
}
if (testKeyValidity(key, "privkey", validListenKeys))
{
checkFileExistsAndReadable("SSL privkey", value, 1024*1024);
curListener->sslPrivkey = value;
}
if (testKeyValidity(key, "inet_protocol", validListenKeys))
{
if (value == "ip4")
curListener->protocol = ListenerProtocol::IPv4;
else if (value == "ip6")
curListener->protocol = ListenerProtocol::IPv6;
else if (value == "ip4_ip6")
curListener->protocol = ListenerProtocol::IPv46;
else
throw ConfigFileException(formatString("Invalid inet protocol: %s", value.c_str()));
}
if (testKeyValidity(key, "inet4_bind_address", validListenKeys))
{
curListener->inet4BindAddress = value;
}
if (testKeyValidity(key, "inet6_bind_address", validListenKeys))
{
curListener->inet6BindAddress = value;
}
if (testKeyValidity(key, "haproxy", validListenKeys))
{
bool val = stringTruthiness(value);
curListener->haproxy = val;
}
if (testKeyValidity(key, "client_verification_ca_file", validListenKeys))
{
checkFileExistsAndReadable(key, valueTrimmed, 1024*1024);
curListener->clientVerificationCaFile = valueTrimmed;
}
if (testKeyValidity(key, "client_verification_ca_dir", validListenKeys))
{
checkDirExists(key, value);
curListener->clientVerificationCaDir = valueTrimmed;
}
if (testKeyValidity(key, "client_verification_still_do_authn", validListenKeys))
{
bool val = stringTruthiness(value);
curListener->clientVerifictionStillDoAuthn = val;
}
if (testKeyValidity(key, "allow_anonymous", validListenKeys))
{
bool val = stringTruthiness(value);
curListener->allowAnonymous = val ? AllowListenerAnonymous::Yes : AllowListenerAnonymous::No;
}
if (testKeyValidity(key, "tcp_nodelay", validListenKeys))
{
bool val = stringTruthiness(value);
curListener->tcpNoDelay = val;
}
if (testKeyValidity(key, "minimum_tls_version", validListenKeys))
{
if (valueTrimmed == "tlsv1.3")
curListener->minimumTlsVersion = TLSVersion::TLSv1_3;
else if (valueTrimmed == "tlsv1.2")
curListener->minimumTlsVersion = TLSVersion::TLSv1_2;
else if (valueTrimmed == "tlsv1.1")
curListener->minimumTlsVersion = TLSVersion::TLSv1_1;
else
throw ConfigFileException("Value '" + valueTrimmed + "' is not a valid value for " + key);
}
testCorrectNumberOfValues(key, number_of_expected_values, values);
continue;
}
else if (curParseLevel == ConfigParseLevel::Bridge)
{
if (testKeyValidity(key, "local_username", validBridgeKeys))
{
curBridge->local_username = value;
}
if (testKeyValidity(key, "remote_username", validBridgeKeys))
{
curBridge->remote_username = value;
}
if (testKeyValidity(key, "remote_password", validBridgeKeys))
{
curBridge->remote_password = value;
}
if (testKeyValidity(key, "remote_clean_start", validBridgeKeys))
{
curBridge->remoteCleanStart = stringTruthiness(value);
}
if (testKeyValidity(key, "remote_session_expiry_interval", validBridgeKeys))
{
int64_t newVal = full_stoi(key, value);
if (newVal <= 0 || newVal > std::numeric_limits<uint32_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint32_t.", newVal));
}
curBridge->remoteSessionExpiryInterval = newVal;
}
if (testKeyValidity(key, "local_clean_start", validBridgeKeys))
{
curBridge->localCleanStart = stringTruthiness(value);
}
if (testKeyValidity(key, "local_session_expiry_interval", validBridgeKeys))
{
int64_t newVal = full_stoi(key, value);
if (newVal <= 0 || newVal > std::numeric_limits<uint32_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint32_t.", newVal));
}
curBridge->localSessionExpiryInterval = newVal;
}
if (testKeyValidity(key, "subscribe", validBridgeKeys))
{
if (!isValidUtf8(value) || !isValidSubscribePath(value))
throw ConfigFileException(formatString("Path '%s' is not a valid subscribe match", value.c_str()));
BridgeTopicPath topicPath;
if (values.size() >= 2)
{
number_of_expected_values = 2;
const std::string &qosstr = values.at(1);
if (!qosstr.empty())
{
topicPath.qos = full_stoul(key, qosstr);
if (!topicPath.isValidQos())
throw ConfigFileException(formatString("Qos '%s' is not a valid qos level", qosstr.c_str()));
}
}
topicPath.topic = value;
curBridge->subscribes.push_back(topicPath);
}
if (testKeyValidity(key, "publish", validBridgeKeys))
{
if (!isValidUtf8(value) || !isValidSubscribePath(value))
throw ConfigFileException(formatString("Path '%s' is not a valid publish match", value.c_str()));
BridgeTopicPath topicPath;
if (values.size() >= 2)
{
number_of_expected_values = 2;
const std::string &qosstr = values.at(1);
if (!qosstr.empty())
{
topicPath.qos = full_stoul(key, qosstr);
if (!topicPath.isValidQos())
throw ConfigFileException(formatString("Qos '%s' is not a valid qos level", qosstr.c_str()));
}
}
topicPath.topic = value;
curBridge->publishes.push_back(topicPath);
}
if (testKeyValidity(key, "clientid_prefix", validBridgeKeys))
{
if (value.length() > 10)
throw ConfigFileException("Value for 'clientid_prefix' can't be longer than 10 chars");
if (!isValidShareName(value))
throw ConfigFileException("Value for 'clientid_prefix' contains invalid charachters");
curBridge->clientidPrefix = value;
}
if (testKeyValidity(key, "address", validBridgeKeys))
{
curBridge->address = value;
}
if (testKeyValidity(key, "port", validBridgeKeys))
{
const int64_t newVal = full_stoi(key, value);
if (newVal <= 0 || newVal > std::numeric_limits<uint16_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint16_t.", newVal));
}
curBridge->port = newVal;
}
if (testKeyValidity(key, "protocol_version", validBridgeKeys))
{
ProtocolVersion v;
if (value == "mqtt3.1")
v = ProtocolVersion::Mqtt31;
else if (value == "mqtt3.1.1")
v = ProtocolVersion::Mqtt311;
else if (value == "mqtt5")
v = ProtocolVersion::Mqtt5;
else
throw ConfigFileException(formatString("Value '%s' is not valid for 'protocol_version'", value.c_str()));
curBridge->protocolVersion = v;
}
if (testKeyValidity(key, "bridge_protocol_bit", validBridgeKeys))
{
curBridge->bridgeProtocolBit = stringTruthiness(value);
}
if (testKeyValidity(key, "keepalive", validBridgeKeys))
{
int64_t newVal = full_stoi(key, value);
if (newVal < 10 || newVal > std::numeric_limits<uint16_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint16_t and must be at least 10.", newVal));
}
curBridge->keepalive = newVal;
}
if (testKeyValidity(key, "tls", validBridgeKeys))
{
BridgeTLSMode mode = BridgeTLSMode::None;
if (value == "unverified")
mode = BridgeTLSMode::Unverified;
else if (value == "on")
mode = BridgeTLSMode::On;
else if (value == "off")
mode = BridgeTLSMode::None;
else
throw ConfigFileException(formatString("Value '%s' is not valid for 'tls'", value.c_str()));
curBridge->tlsMode = mode;
}
if (testKeyValidity(key, "fullchain", validBridgeKeys))
{
checkFileExistsAndReadable(key, value, 1024*1024*100);
curBridge->sslFullchain = value;
}
if (testKeyValidity(key, "privkey", validBridgeKeys))
{
checkFileExistsAndReadable(key, value, 1024*1024*100);
curBridge->sslPrivkey = value;
}
if (testKeyValidity(key, "ca_file", validBridgeKeys))
{
checkFileExistsAndReadable(key, value, 1024*1024*100);
curBridge->caFile = value;
}
if (testKeyValidity(key, "ca_dir", validBridgeKeys))
{
checkDirExists(key, value);
curBridge->caDir = value;
}
if (testKeyValidity(key, "max_incoming_topic_aliases", validBridgeKeys))
{
const int64_t newVal = full_stoi(key, value);
if (newVal < 0 || newVal > std::numeric_limits<uint16_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint16_t.", newVal));
}
curBridge->maxIncomingTopicAliases = newVal;
}
if (testKeyValidity(key, "max_outgoing_topic_aliases", validBridgeKeys))
{
const int64_t newVal = full_stoi(key, value);
if (newVal < 0 || newVal > std::numeric_limits<uint16_t>::max())
{
throw ConfigFileException(formatString("Value '%d' doesn't fit in uint16_t.", newVal));
}
curBridge->maxOutgoingTopicAliases = newVal;
}
if (testKeyValidity(key, "inet_protocol", validBridgeKeys))
{
if (value == "ip4")
curBridge->inet_protocol = ListenerProtocol::IPv4;
else if (value == "ip6")
curBridge->inet_protocol = ListenerProtocol::IPv6;
else if (value == "ip4_ip6")
curBridge->inet_protocol = ListenerProtocol::IPv46;
else
throw ConfigFileException(formatString("Invalid inet protocol: %s", value.c_str()));
}
if (testKeyValidity(key, "use_saved_clientid", validBridgeKeys))
{
curBridge->useSavedClientId = stringTruthiness(value);
}
if (testKeyValidity(key, "remote_retain_available", validBridgeKeys))
{
curBridge->remoteRetainAvailable = stringTruthiness(value);
}
if (testKeyValidity(key, "tcp_nodelay", validBridgeKeys))
{
curBridge->tcpNoDelay = true;
}
if (testKeyValidity(key, "local_prefix", validBridgeKeys))
{
if (value.empty())
throw ConfigFileException("Option '" + key + "' can't be empty.");
if (!endsWith(value, "/"))
throw ConfigFileException("Option '" + key + "' must end in a '/'.");
curBridge->local_prefix = value;
}
if (testKeyValidity(key, "remote_prefix", validBridgeKeys))
{
if (value.empty())
throw ConfigFileException("Option '" + key + "' can't be empty.");
if (!endsWith(value, "/"))
throw ConfigFileException("Option '" + key + "' must end in a '/'.");
curBridge->remote_prefix = value;
}
if (testKeyValidity(key, "minimum_tls_version", validBridgeKeys))
{
if (valueTrimmed == "tlsv1.3")
curBridge->minimumTlsVersion = TLSVersion::TLSv1_3;
else if (valueTrimmed == "tlsv1.2")
curBridge->minimumTlsVersion = TLSVersion::TLSv1_2;
else if (valueTrimmed == "tlsv1.1")
curBridge->minimumTlsVersion = TLSVersion::TLSv1_1;
else
throw ConfigFileException("Value '" + valueTrimmed + "' is not a valid value for " + key);
}
testCorrectNumberOfValues(key, number_of_expected_values, values);
continue;
}
const std::string plugin_opt_ = "plugin_opt_";
if (startsWith(key, plugin_opt_))
{
key.replace(0, plugin_opt_.length(), "");
pluginOpts[key] = value;
}
else
{
if (testKeyValidity(key, "plugin", validKeys))
{
checkFileExistsAndReadable(key, value, 1024*1024*100);
tmpSettings.pluginPath = value;
}
if (testKeyValidity(key, "log_file", validKeys))
{
checkFileOrItsDirWritable(value);
tmpSettings.logPath = value;
}
if (testKeyValidity(key, "quiet", validKeys))
{
Logger::getInstance()->log(LOG_WARNING) << "The config option '" << key << "' is deprecated. Use log_level instead.";
bool tmp = stringTruthiness(value);
tmpSettings.quiet = tmp;
}
if (testKeyValidity(key, "allow_unsafe_clientid_chars", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.allowUnsafeClientidChars = tmp;
}
if (testKeyValidity(key, "allow_unsafe_username_chars", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.allowUnsafeUsernameChars = tmp;
}
if (testKeyValidity(key, "plugin_serialize_init", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.pluginSerializeInit = tmp;
}
if (testKeyValidity(key, "plugin_serialize_auth_checks", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.pluginSerializeAuthChecks = tmp;
}
if (testKeyValidity(key, "client_initial_buffer_size", validKeys))
{
int newVal = full_stoi(key, value);
if (!isPowerOfTwo(newVal))
throw ConfigFileException("client_initial_buffer_size value " + value + " is not a power of two.");
tmpSettings.clientInitialBufferSize = newVal;
}
if (testKeyValidity(key, "max_packet_size", validKeys))
{
int newVal = full_stoi(key, value);
if (newVal > ABSOLUTE_MAX_PACKET_SIZE)
{
std::ostringstream oss;
oss << "Value for max_packet_size " << newVal << " is higher than absolute maximum " << ABSOLUTE_MAX_PACKET_SIZE;
throw ConfigFileException(oss.str());
}
tmpSettings.maxPacketSize = newVal;
}
if (testKeyValidity(key, "log_debug", validKeys))
{
Logger::getInstance()->log(LOG_WARNING) << "The config option '" << key << "' is deprecated. Use log_level instead.";
bool tmp = stringTruthiness(value);
tmpSettings.logDebug = tmp;
}
if (testKeyValidity(key, "log_level", validKeys))
{
const std::string v = str_tolower(value);
LogLevel level = LogLevel::None;
if (v == "debug")
level = LogLevel::Debug;
else if (v == "info")
level = LogLevel::Info;
else if (v == "notice")
level = LogLevel::Notice;
else if (v == "warning")
level = LogLevel::Warning;
else if (v == "error")
level = LogLevel::Warning;
else if (v == "none")
level = LogLevel::None;
else
throw ConfigFileException("Invalid log level: " + value);
tmpSettings.logLevel = level;
}
if (testKeyValidity(key, "log_subscriptions", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.logSubscriptions = tmp;
}
if (testKeyValidity(key, "mosquitto_password_file", validKeys))
{
checkFileExistsAndReadable("mosquitto_password_file", value, 1024*1024*1024);
tmpSettings.mosquittoPasswordFile = value;
}
if (testKeyValidity(key, "mosquitto_acl_file", validKeys))
{
checkFileExistsAndReadable("mosquitto_acl_file", value, 1024*1024*1024);
tmpSettings.mosquittoAclFile = value;
}
if (testKeyValidity(key, "allow_anonymous", validKeys))
{
bool tmp = stringTruthiness(value);
tmpSettings.allowAnonymous = tmp;
}
if (testKeyValidity(key, "rlimit_nofile", validKeys))
{
int newVal = full_stoi(key, value);
if (newVal <= 0)
{
throw ConfigFileException(formatString("Value '%d' is negative.", newVal));
}
tmpSettings.rlimitNoFile = newVal;
}
if (testKeyValidity(key, "expire_sessions_after_seconds", validKeys))
{
uint32_t newVal = full_stoul(key, value);
if (newVal > 0 && newVal < 60) // 0 means disable
{
throw ConfigFileException(formatString("expire_sessions_after_seconds value '%d' is invalid. Valid values are 0, or 60 or higher.", newVal));
}
tmpSettings.expireSessionsAfterSeconds = newVal;
}
if (testKeyValidity(key, "plugin_timer_period", validKeys))
{
int newVal = full_stoi(key, value);
if (newVal < 0)
{
throw ConfigFileException(formatString("plugin_timer_period value '%d' is invalid. Valid values are 0 or higher. 0 means disabled.", newVal));
}
tmpSettings.pluginTimerPeriod = newVal;
}
if (testKeyValidity(key, "storage_dir", validKeys))
{
std::string newPath = value;
rtrim(newPath, '/');
checkWritableDir<ConfigFileException>(newPath);
tmpSettings.storageDir = newPath;
}
if (testKeyValidity(key, "thread_count", validKeys))
{
int newVal = full_stoi(key, value);
if (newVal < 0)
{
throw ConfigFileException(formatString("thread_count value '%d' is invalid. Valid values are 0 or higher. 0 means auto.", newVal));
}
tmpSettings.threadCount = newVal;
}
if (testKeyValidity(key, "max_qos_msg_pending_per_client", validKeys))
{
int newVal = full_stoi(key, value);
if (newVal < 32 || newVal > 65535)
{
throw ConfigFileException(formatString("max_qos_msg_pending_per_client value '%d' is invalid. Valid values between 32 and 65535.", newVal));
}
tmpSettings.maxQosMsgPendingPerClient = newVal;
}
if (testKeyValidity(key, "max_qos_bytes_pending_per_client", validKeys))
{