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Fix get_server_status() segfault due to uninitialized m_env

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Fixes #7857
This commit is contained in:
rubenwardy 2018-11-12 14:34:01 +00:00
parent b78698240c
commit 81d55338fa
1 changed files with 29 additions and 23 deletions
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52
src/server.cpp
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@ -260,7 +260,7 @@ Server::~Server()
m_env->kickAllPlayers(SERVER_ACCESSDENIED_SHUTDOWN, m_env->kickAllPlayers(SERVER_ACCESSDENIED_SHUTDOWN,
kick_msg, reconnect); kick_msg, reconnect);
} }
actionstream << "Server: Shutting down" << std::endl; actionstream << "Server: Shutting down" << std::endl;
// Do this before stopping the server in case mapgen callbacks need to access // Do this before stopping the server in case mapgen callbacks need to access
@ -2897,38 +2897,44 @@ PlayerSAO *Server::getPlayerSAO(session_t peer_id)
std::wstring Server::getStatusString() std::wstring Server::getStatusString()
{ {
std::wostringstream os(std::ios_base::binary); std::wostringstream os(std::ios_base::binary);
os<<L"# Server: "; os << L"# Server: ";
// Version // Version
os<<L"version="<<narrow_to_wide(g_version_string); os << L"version=" << narrow_to_wide(g_version_string);
// Uptime // Uptime
os<<L", uptime="<<m_uptime.get(); os << L", uptime=" << m_uptime.get();
// Max lag estimate // Max lag estimate
os<<L", max_lag="<<m_env->getMaxLagEstimate(); os << L", max_lag=" << (m_env ? m_env->getMaxLagEstimate() : 0);
// Information about clients // Information about clients
bool first = true; bool first = true;
os<<L", clients={"; os << L", clients={";
std::vector<session_t> clients = m_clients.getClientIDs(); if (m_env) {
for (session_t client_id : clients) { std::vector<session_t> clients = m_clients.getClientIDs();
// Get player for (session_t client_id : clients) {
RemotePlayer *player = m_env->getPlayer(client_id); RemotePlayer *player = m_env->getPlayer(client_id);
// Get name of player
std::wstring name = L"unknown"; // Get name of player
if (player) std::wstring name = L"unknown";
name = narrow_to_wide(player->getName()); if (player)
// Add name to information string name = narrow_to_wide(player->getName());
if(!first)
os << L", "; // Add name to information string
else if (!first)
first = false; os << L", ";
os << name; else
first = false;
os << name;
}
} }
os << L"}"; os << L"}";
if (!((ServerMap*)(&m_env->getMap()))->isSavingEnabled()) if (m_env && !((ServerMap*)(&m_env->getMap()))->isSavingEnabled())
os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled."; os << std::endl << L"# Server: " << " WARNING: Map saving is disabled.";
if (!g_settings->get("motd").empty()) if (!g_settings->get("motd").empty())
os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings->get("motd")); os << std::endl << L"# Server: " << narrow_to_wide(g_settings->get("motd"));
return os.str(); return os.str();
} }