implement status command for nq clients that expect something to be printed. IP addresses are withheld.

fix stats issue.
support menuqc-based loading screens.
fixed 2d render-to-texture issues.
(finally) throttle 'connection lost or aborted' messages. report the ip address too, because we can.
begun work on nq-style player ip-logging. ip addresses are collected now, but there's still no actual database code yet.
rewrote engine auto-update. now part of the updates menu instead of system-specific special-case code. Still requires a system function to actually invoke the updated engine however.
added sdl audio capture support (requires sdl 2.0.5).
treat q_version like f_version etc. respond to both.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5046 fc73d0e0-1445-4013-8a0c-d673dee63da5

engine/common/log.c

@@ -325,6 +325,89 @@ void SV_Fraglogfile_f (void)
 }
 */
 
+static qboolean IPLog_Merge_File(const char *fname)
+{
+	char ip[MAX_ADR_SIZE];
+	char name[256];
+	char line[1024];
+	vfsfile_t *f;
+	if (!*fname)
+		fname = "iplog.txt";
+	f = FS_OpenVFS(fname, "rb", FS_GAME);
+	if (!f)
+		return false;
+	if (!Q_strcasecmp(COM_FileExtension(fname, name, sizeof(name)), ".dat"))
+	{	//we don't write this format because of it being limited to ipv4, as well as player name lengths
+		while (VFS_READ(f, line, 20) == 20)
+		{
+			Q_snprintfz(ip, sizeof(ip), "%i.%i.%i.%i", (qbyte)line[0], (qbyte)line[1], (qbyte)line[2], (qbyte)line[3]);
+			memcpy(name, line+4, 20-4);
+			name[20-4] = 0;
+			IPLog_Add(ip, name);
+		}
+	}
+	else
+	{
+		while (VFS_GETS(f, line, sizeof(line)-1))
+		{
+			//whether the name contains quotes or what is an awkward one.
+			//we always write quotes (including string markup to avoid issues)
+			//dp doesn't, and our parser is lazy, so its possible we'll get gibberish that way
+			if (COM_ParseOut(COM_ParseOut(line, ip, sizeof(ip)), name, sizeof(name)))
+				IPLog_Add(ip, name);
+		}
+	}
+	VFS_CLOSE(f);
+	return true;
+}
+void IPLog_Add(const char *ipstr, const char *name)
+{
+	if (*ipstr != '[' && *ipstr < '0' && *ipstr > '9')
+		return;
+	//might be x.y.z.w:port
+	//might be x.y.z.FUCKED
+	//might be x.y.z.0/24
+	//might be [::]:port
+	//might be [::]/bits
+	//or other ways to express an ip address
+	//note that ipv4 addresses should be converted to ipv6 ::ffff:x.y.z.w format for internal use or something, then this code only needs to deal with a single 128bit address format.
+	//ipv6 addresses generally only need 64bits to identify a user's home router, the other 64bits are generally 'just' to avoid nats.
+	//ignore ipx addresses, I doubt anyone will ever actually use it, and even if they do its just lans.
+}
+static void IPLog_Identify_f(void)
+{
+//	const char *nameorip = Cmd_Argv(1);
+	Con_Printf("Not yet implemented\n");
+	//if *, use a mask that includes all ips
+	//try to parse as an ip
+	//if server is active, walk players to see if there's a name match to get their address and guess an address mask
+	//else if client is active, walk players to see if there's a name match, to get their address+mask if known via nq hacks
+	//look for matches
+}
+static void IPLog_Dump_f(void)
+{
+	const char *fname = Cmd_Argv(1);
+	if (!*fname)
+		fname = "iplog.txt";
+#if 1
+	Con_Printf("Not yet implemented\n");
+#else
+	vfsfile_t *f = FS_OpenVFS(fname, "wb", FS_GAMEONLY);
+	VFS_PRINTF(f, "//generated by "FULLENGINENAME"\n", foo->ip, foo->name);
+	for (foo = first; foo; foo = foo->next)
+	{
+		char buf[1024];
+		VFS_PRINTF(f, "%s %s\n", foo->ip, COM_QuotedString(foo->name, buf, sizeof(buf), false));
+	}
+	VFS_CLOSE(f);
+#endif
+}
+static void IPLog_Merge_f(void)
+{
+	const char *fname = Cmd_Argv(1);
+	if (!IPLog_Merge_File(fname))
+		Con_Printf("unable to read %s\n", fname);
+}
 
 void Log_Init(void)
 {
@@ -346,6 +429,10 @@ void Log_Init(void)
 
 	Cmd_AddCommand("logfile", Log_Logfile_f);
 
+	Cmd_AddCommand("identify", IPLog_Identify_f);
+	Cmd_AddCommand("ipmerge", IPLog_Merge_f);
+	Cmd_AddCommand("ipdump", IPLog_Dump_f);
+
 	// cmd line options, debug options
 #ifdef CRAZYDEBUGGING
 	Cvar_ForceSet(&log_enable[LOG_CONSOLE], "1");