/alert command with messagebox_show function

#15

conf/bnhelp.conf.in

@@ -211,6 +211,13 @@
 
 	Example: /realmann Hello everyone!
 
+%alert
+--------------------------------------------------------
+/alert <message>
+	Show MessageBox with <message> to everyone. Use \n as a new line symbol.
+
+	Example: /alert Hello\neveryone!
+
 %news
 --------------------------------------------------------
 /news

conf/command_groups.conf.in

@@ -150,6 +150,7 @@
 
 2	/realmann
 2	/ann /announce
+2	/alert
 
 3	/serverban /ipban
 3	/ipscan

src/bnetd/command.cpp

@@ -371,6 +371,7 @@ namespace pvpgn
 		static int _handle_moderate_command(t_connection * c, char const * text);
 		static int _handle_clearstats_command(t_connection * c, char const * text);
 		static int _handle_tos_command(t_connection * c, char const * text);
+		static int _handle_alert_command(t_connection * c, char const * text);
 
 		static const t_command_table_row standard_command_table[] =
 		{
@@ -487,6 +488,7 @@ namespace pvpgn
 			{ "/moderate", _handle_moderate_command },
 			{ "/clearstats", _handle_clearstats_command },
 			{ "/icon", handle_icon_command },
+			{ "/alert", _handle_alert_command },
 
 			{ NULL, NULL }
 
@@ -5062,5 +5064,57 @@ namespace pvpgn
 			return 0;
 		}
 
+		/* Send message to all clients (similar to announce, but in messagebox) */
+		static int _handle_alert_command(t_connection * c, char const * text)
+		{
+			char const * channel_name;
+			const char * topic;
+			t_clienttag  clienttag;
+			t_clienttag  clienttag_dest;
+
+			clienttag = conn_get_clienttag(c);
+			// disallow clients that doesn't support SID_MESSAGEBOX
+			if (clienttag != CLIENTTAG_STARCRAFT_UINT && clienttag != CLIENTTAG_BROODWARS_UINT && clienttag != CLIENTTAG_STARJAPAN_UINT && clienttag != CLIENTTAG_SHAREWARE_UINT &&
+				clienttag != CLIENTTAG_DIABLORTL_UINT && clienttag != CLIENTTAG_DIABLOSHR_UINT &&
+				clienttag != CLIENTTAG_WARCIIBNE_UINT && clienttag != CLIENTTAG_BNCHATBOT_UINT)
+			{
+				message_send_text(c, message_type_error, c, "Your game client doesn't support MessageBox.");
+				return -1;
+			}
+
+			std::vector<std::string> args = split_command(text, 1);
+			if (args[1].empty())
+			{
+				describe_command(c, args[0].c_str());
+				return 0;
+			}
+
+			// reduntant line - it adds a caption to message box
+			std::string goodtext = args[1] + "\n\n***************************\nBy " + conn_get_username(c);
+
+			// caption
+			snprintf(msgtemp, sizeof(msgtemp), "Information from %.64s", prefs_get_servername());
+
+			t_connection * conn;
+			t_elem const * curr;
+			// send to online users
+			LIST_TRAVERSE_CONST(connlist(), curr)
+			{
+				if (conn = (t_connection*)elem_get_data(curr))
+				{
+					clienttag_dest = conn_get_clienttag(conn);
+
+					if (clienttag_dest != CLIENTTAG_STARCRAFT_UINT && clienttag_dest != CLIENTTAG_BROODWARS_UINT && clienttag_dest != CLIENTTAG_STARJAPAN_UINT && clienttag_dest != CLIENTTAG_SHAREWARE_UINT &&
+						clienttag_dest != CLIENTTAG_DIABLORTL_UINT && clienttag_dest != CLIENTTAG_DIABLOSHR_UINT &&
+						clienttag_dest != CLIENTTAG_WARCIIBNE_UINT && clienttag_dest != CLIENTTAG_BNCHATBOT_UINT) {
+						continue;
+					}
+					messagebox_show(conn, goodtext.c_str(), msgtemp);
+				}
+			}
+
+			return 0;
+		}
+
 	}
 }

src/bnetd/message.cpp

@@ -22,6 +22,7 @@
 
 #include <cstring>
 #include <cerrno>
+#include <string>
 
 #include "compat/gethostname.h"
 #include "common/xalloc.h"
@@ -33,6 +34,7 @@
 #include "common/bn_type.h"
 #include "common/list.h"
 #include "common/util.h"
+#include "common/xstring.h"
 
 #include "account.h"
 #include "account_wrap.h"
@@ -1712,6 +1714,26 @@ namespace pvpgn
 			return 0;
 		}
 
+		/* Show message box on a client side (https://github.com/HarpyWar/pvpgn/issues/15) */
+		extern int messagebox_show(t_connection * dst, char const * text, char const * caption, int type)
+		{
+			t_packet *rpacket;
+
+			std::string newtext = str_replace_nl(text);
+
+			if ((rpacket = packet_create(packet_class_bnet)))
+			{
+				packet_set_size(rpacket, sizeof(t_server_messagebox));
+				packet_set_type(rpacket, SERVER_MESSAGEBOX);
+				bn_int_set(&rpacket->u.server_messagebox.style, type); 
+				packet_append_string(rpacket, newtext.c_str());
+				packet_append_string(rpacket, caption);
+				conn_push_outqueue(dst, rpacket);
+				packet_del_ref(rpacket);
+			}
+			return 0;
+		}
+
 	}
 
 }

src/bnetd/message.h

@@ -121,6 +121,7 @@ namespace pvpgn
 #include <cstdio>
 #define JUST_NEED_TYPES
 #include "connection.h"
+#include "common/bnet_protocol.h"
 #undef JUST_NEED_TYPES
 
 namespace pvpgn
@@ -140,6 +141,7 @@ namespace pvpgn
 		extern int message_send_text(t_connection * dst, t_message_type type, t_connection * src, char const * text);
 		extern int message_send_formatted(t_connection * dst, char const * text);
 		extern int message_send_file(t_connection * dst, std::FILE * fd);
+		extern int messagebox_show(t_connection * dst, char const * text, char const * caption = "", int type = SERVER_MESSAGEBOX_OK);
 
 	}
 

src/common/bnet_protocol.h

@@ -4052,7 +4052,21 @@ namespace pvpgn
 		 */
 	} PACKED_ATTR() t_server_clanmemberupdate;
 
+
+
+#define SERVER_MESSAGEBOX 0x19ff
+	typedef struct
+	{
+		t_bnet_header h;
+		bn_int        style;
+		/* Text */
+		/* Caption */
+	} PACKED_ATTR() t_server_messagebox;
+#define SERVER_MESSAGEBOX_OK    0x00000000
+#define SERVER_MESSAGEBOX_OKCANCEL 0x00000001
+#define SERVER_MESSAGEBOX_YESNO 0x00000004
+
+
 }
 
 #endif
-

src/common/packet.cpp

@@ -746,6 +746,8 @@ namespace pvpgn
 					return "SERVER_CLANMEMBER_REMOVED_NOTIFY";
 				case SERVER_CLANMEMBERUPDATE:
 					return "SERVER_CLANMEMBERUPDATE";
+				case SERVER_MESSAGEBOX:
+					return "SERVER_MESSAGEBOX";
 				}
 				return "unknown";
 

src/common/packet.h

@@ -365,6 +365,8 @@ namespace pvpgn
 			t_server_claninforeply			server_claninforeply;
 			t_client_findanongame_profile_clan	client_findanongame_profile_clan;
 			t_server_findanongame_profile_clan	server_findanongame_profile_clan;
+
+			t_server_messagebox         server_messagebox;
 		} u;
 	} t_packet;
 

src/common/xstring.cpp

@@ -24,6 +24,7 @@
 #include <string>
 #include <vector>
 #include <sstream>
+#include <iomanip>
 
 #include "compat/strdup.h"
 #include "common/xalloc.h"
@@ -365,4 +366,17 @@ namespace pvpgn
 
 		return result;
 	}
+
+	/* Replace "\n" in string to a new line character '\n' */
+	extern std::string str_replace_nl(char const * text)
+	{
+		std::string s(text);
+		size_t pos = 0;
+		while ((pos = s.find("\\n", pos)) != std::string::npos) {
+			s.replace(pos, 2, "\n");
+		}
+		return s;
+	}
+
+
 }

src/common/xstring.h

@@ -34,6 +34,7 @@ namespace pvpgn
 	extern char *		str_strip_affix(char * str, char const * affix);
 	extern const char *str_replace(char *orig, char *rep, char *with);
 	extern std::vector<std::string> split_command(char const * text, int args_count);
+	extern std::string str_replace_nl(char const * text);
 
 	/*
 	Fix for std::string for some unix compilers