add $si command

.gitignore

@@ -2,6 +2,7 @@
 .DS_Store
 
 # Build products
+src/Revision.cc
 newserv
 
 # CMake files

CMakeLists.txt

@@ -38,6 +38,12 @@ find_package(resource_file QUIET)
 
 
 
+# Git metadata
+
+add_custom_target(newserv-Revision-cc ALL COMMAND ./Revision-generate.sh WORKING_DIRECTORY src)
+
+
+
 # Executable definition
 
 set(SOURCES
@@ -100,6 +106,7 @@ set(SOURCES
     src/ReceiveCommands.cc
     src/ReceiveSubcommands.cc
     src/ReplaySession.cc
+    src/Revision.cc
     src/SaveFileFormats.cc
     src/SendCommands.cc
     src/Server.cc
@@ -122,6 +129,7 @@ endif()
 add_executable(newserv ${SOURCES})
 target_include_directories(newserv PUBLIC ${LIBEVENT_INCLUDE_DIR} ${Iconv_INCLUDE_DIRS})
 target_link_libraries(newserv phosg ${LIBEVENT_LIBRARIES} ${Iconv_LIBRARIES} pthread)
+add_dependencies(newserv newserv-Revision-cc)
 
 if(resource_file_FOUND)
     target_compile_definitions(newserv PUBLIC HAVE_RESOURCE_FILE)

README.md

@@ -283,6 +283,7 @@ Some commands only work on the game server and not on the proxy server. The chat
 
 * Information commands
     * `$li`: Shows basic information about the lobby or game you're in. If you're on the proxy server, shows information about your connection instead (remote Guild Card number, client ID, etc.).
+    * `$si`: Shows basic information about the server.
     * `$ping`: Shows round-trip ping time from the server to you. On the proxy server, shows the ping time from you to the proxy and from the proxy to the server.
     * `$matcount` (game server only): Shows how many of each type of material you've used.
     * `$what` (game server only): Shows the type, name, and stats of the nearest item on the ground.

src/ChatCommands.cc

@@ -14,6 +14,7 @@
 #include "Loggers.hh"
 #include "ProxyServer.hh"
 #include "ReceiveCommands.hh"
+#include "Revision.hh"
 #include "SendCommands.hh"
 #include "Server.hh"
 #include "StaticGameData.hh"
@@ -91,6 +92,20 @@ static void check_is_leader(shared_ptr<Lobby> l, shared_ptr<Client> c) {
 ////////////////////////////////////////////////////////////////////////////////
 // Message commands
 
+static void server_command_server_info(shared_ptr<Client> c, const std::string&) {
+  auto s = c->require_server_state();
+  string uptime_str = format_duration(now() - s->creation_time);
+  string build_date = format_time(BUILD_TIMESTAMP);
+  send_text_message_printf(c,
+      "Revision: $C6%s$C7\n$C6%s$C7\nUptime: $C6%s$C7\nLobbies: $C6%zu$C7\nClients: $C6%zu$C7(g) $C6%zu$C7(p)",
+      GIT_REVISION_HASH,
+      build_date.c_str(),
+      uptime_str.c_str(),
+      s->id_to_lobby.size(),
+      s->channel_to_client.size(),
+      s->proxy_server->num_sessions());
+}
+
 static void server_command_lobby_info(shared_ptr<Client> c, const std::string&) {
   vector<string> lines;
 
@@ -1906,6 +1921,7 @@ static const unordered_map<string, ChatCommandDefinition> chat_commands({
     {"$saverec", {server_command_saverec, nullptr}},
     {"$sc", {server_command_send_client, proxy_command_send_client}},
     {"$secid", {server_command_secid, proxy_command_secid}},
+    {"$si", {server_command_server_info, nullptr}},
     {"$silence", {server_command_silence, nullptr}},
     {"$song", {server_command_song, proxy_command_song}},
     {"$spec", {server_command_toggle_spectator_flag, nullptr}},

src/Main.cc

@@ -35,6 +35,7 @@
 #include "Quest.hh"
 #include "QuestScript.hh"
 #include "ReplaySession.hh"
+#include "Revision.hh"
 #include "SaveFileFormats.hh"
 #include "SendCommands.hh"
 #include "Server.hh"
@@ -49,6 +50,7 @@ using namespace std;
 
 bool use_terminal_colors = false;
 
+void print_version_info();
 void print_usage();
 
 template <typename T>
@@ -204,6 +206,14 @@ Action a_help(
       print_usage();
     });
 
+Action a_version(
+    "version", "\
+  version\n\
+    Show newserv\'s revision and build date.\n",
+    +[](Arguments&) -> void {
+      print_version_info();
+    });
+
 static void a_compress_decompress_fn(Arguments& args) {
   const auto& action = args.get<string>(0);
   bool is_prs = ends_with(action, "-prs");
@@ -1890,8 +1900,14 @@ Action a_run_server_replay_log(
       state->proxy_server.reset(); // Break reference cycle
     });
 
+void print_version_info() {
+  string build_date = format_time(BUILD_TIMESTAMP);
+  fprintf(stderr, "newserv-%s built %s UTC\n", GIT_REVISION_HASH, build_date.c_str());
+}
+
 void print_usage() {
-  fputs("\
+  print_version_info();
+  fputs("\n\
 Usage:\n\
   newserv [ACTION] [OPTIONS...]\n\
 \n\

src/ProxyServer.cc

@@ -910,6 +910,10 @@ void ProxyServer::destroy_sessions() {
   this->unlinked_sessions_to_destroy.clear();
 }
 
+size_t ProxyServer::num_sessions() const {
+  return this->id_to_session.size();
+}
+
 size_t ProxyServer::delete_disconnected_sessions() {
   size_t count = 0;
   for (auto it = this->id_to_session.begin(); it != this->id_to_session.end();) {

src/ProxyServer.hh

@@ -190,6 +190,8 @@ public:
   void delete_session(uint64_t id);
   void delete_session(struct bufferevent* bev);
 
+  size_t num_sessions() const;
+
   size_t delete_disconnected_sessions();
 
 private:

src/ReceiveSubcommands.cc

@@ -2959,13 +2959,19 @@ static void on_quest_F960_result_bb(shared_ptr<Client> c, uint8_t, uint8_t, void
     G_SetMesetaSlotPrizeResult_BB_6xE3 cmd_6xE3 = {{0xE3, sizeof(G_SetMesetaSlotPrizeResult_BB_6xE3) >> 2, 0x0000}, item};
     send_command_t(c, 0x60, 0x00, cmd_6xE3);
 
+    try {
       p->add_item(item);
       send_create_inventory_item_to_lobby(c, c->lobby_client_id, item);
-
       if (c->log.should_log(LogLevel::INFO)) {
         string name = s->item_name_index->describe_item(c->version(), item);
         c->log.info("Awarded item %s", name.c_str());
       }
+    } catch (const out_of_range&) {
+      if (c->log.should_log(LogLevel::INFO)) {
+        string name = s->item_name_index->describe_item(c->version(), item);
+        c->log.info("Attempted to award item %s, but inventory was full", name.c_str());
+      }
+    }
   }
 }
 

src/Revision-generate.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+GIT_REVISION_HASH=$(git rev-parse --short HEAD)
+TIMESTAMP_SECS=$(date +%s)
+
+if [ -z "$GIT_REVISION_HASH" ]; then
+  GIT_REVISION_HASH="????"
+else
+  if ! git diff-index --quiet HEAD -- ; then
+    GIT_REVISION_HASH="$GIT_REVISION_HASH+"
+  fi
+fi
+
+cat > Revision.cc <<EOF
+#include "Revision.hh"
+
+const char* GIT_REVISION_HASH = "$GIT_REVISION_HASH";
+const uint64_t BUILD_TIMESTAMP = static_cast<uint64_t>($TIMESTAMP_SECS) * 1000000;
+EOF

src/Revision.hh

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <stdint.h>
+
+extern const char* GIT_REVISION_HASH;
+extern const uint64_t BUILD_TIMESTAMP;

src/ServerState.cc

@@ -30,7 +30,8 @@ ServerState::QuestF960Result::QuestF960Result(const JSON& json, std::shared_ptr<
 }
 
 ServerState::ServerState(shared_ptr<struct event_base> base, const string& config_filename, bool is_replay)
-    : base(base),
+    : creation_time(now()),
+      base(base),
       config_filename(config_filename),
       is_replay(is_replay),
       dns_server_port(0),

src/ServerState.hh

@@ -59,6 +59,7 @@ struct ServerState : public std::enable_shared_from_this<ServerState> {
     return (b == BehaviorSwitch::OFF_BY_DEFAULT) || (b == BehaviorSwitch::ON_BY_DEFAULT);
   }
 
+  uint64_t creation_time;
   std::shared_ptr<struct event_base> base;
 
   std::string config_filename;