[K.K.Lv]

This extension allow you to get the server information with the given ip and port.
I'm new on SourceMod, so this is a Beta version.
Feedback are welcome.
about the server query click here.
sorry for my bad english.so not let's start with the pawn

ChangeLog:

0.0.0.1        Release version
0.0.0.2        Fixed wrong index at the recv pack data,add a timeout param into create_sq_info
0.0.1.0        Rewrite the code, and add player data and server rule type
                 change the recv data type, Like socket extension

new header file for SourceMod:

PHP Code:

#if defined _server_query_ext_included
 #endinput
#endif
#define _server_query_ext_included

enum DataType
{
    DT_String_Start = 0,
    DT_HostName,
    DT_MapName,
    DT_Directory,
    DT_Description,
    DT_Version,
    DT_String_End,
    DT_Cell_Start,
    DT_Protocol,
    DT_AppID,
    DT_Num,
    DT_Max,
    DT_Bots,
    DT_Dedicated,
    DT_OS,
    DT_PassWord,
    DT_Secure,
    DT_Cell_End,
};

enum QueryType
{
    QT_Start = 0,
    QT_Info,
    QT_Players,
    QT_Rules,
    QT_End,
};

funcenum QueryInfo
{
  /**
     * Call when the query server information success.
     * 
     * @param  DataTrie    Handle to the Data Trie, have not need to free.
     * @param  DataSize    The size of the recv data.
     * @noreturn
     */
  public(Handle:DataTrie, const String:ServerIP[], ServerPort, QueryType:type, DataSize),
}

/**
 * Create a hook to get server's info with given ip and port.
 * 
 * @param    _hostname    server ip or domain.
 * @param    _port        server port.
 * @param    _callback    a query callback.
 * @param    _timeout    where timeout is a value in microseconds
 * 
 * @return              1 on success, or 0 on failed.
 */
native CreateServerQuery(const String:_hostname[], _port, QueryType:type = QT_Start, QueryInfo:callback);

/**
 * Get server string information with the data_type on the QueryInfo callback only.
 * 
 * @param  DataTrie      Handle to the data.
 * @param  data_type     Which string data will be output
 * @param  value         Buffer to store the output data.
 * @param  maxlen        Maximum length of string buffer.
 * 
 * @return               1 on success, or 0 on failed.
 */
native GetServerString(Handle:DataTrie, DataType:data_type = DT_String_Start, String:value[], maxlen);

/**
 * Get server cell information with the data_type on the QueryInfo callback only.
 * 
 * @param  DataTrie      Handle to the data.
 * @param  data_type     Which string data will be output
 * @param  value         Data value.
 * 
 * @return               1 on success, or 0 on failed.
 */
native GetServerCell(Handle:DataTrie, DataType:data_type = DT_Cell_Start, &value);

/**
 * Get server player count.
 * 
 * @param    DataTrie    Handle to the data.
 * 
 * @return                server player count.
 */
native GetPlayerCount(Handle:DataTrie);

/**
 * Get server player data with the given index.
 * 
 * @param    DataTrie    Handle to the data.
 * @param    index        Data index.(start on 1, end on player count);
 * @param    name        user name.
 * @param    nameLen        max size of name.
 * @param    kills        player frag(s).
 * @param    pltime        play time of user.
 * 
 * @return                1 on success, or 0 on failed.
 */
native GetPlayerData(Handle:DataTrie, index, String:name[], nameLen, &kills, &Float:play_time);

/**
 * Get server rules count.
 * 
 * @param    DataTrie    Handle to the data.
 * 
 * @return                server rules count.
 */
native GetRulesCount(Handle:DataTrie);

/**
 * Get server rules data with the given index.
 * 
 * @param    DataTrie    Handle to the data.
 * @param    index        Data index.(start on 1, end on rules count);
 * @param    name        rules name.
 * @param    nameLen        max size of name.
 * @param    value        rules value.
 * @param    valueLen    max size of value.
 * 
 * @return                1 on success, or 0 on failed.
 */
native GetRulesData(Handle:DataTrie, index, String:name[], nameLen, String:value[], valueLen);

/**
 * Get rule's value with the given name.
 * 
 * @param    DataTrie    Handle to the data.
 * @param    name        Name will be searched.
 * @param    value        rule's value.
 * @param    valueLen    max size of value.
 * 
 * @return                1 on success, or 0 on failed.
 */
native GetRule(Handle:DataTrie, const String:name[], String:value[], valueLen); 


a sample demo:

/* Plugin Template generated by Pawn Studio */

#include <sourcemod>
#include <server_query_ext>

public Plugin:myinfo = 
{
    name = "query test",
    author = "L.K",
    description = "<- Description ->",
    version = "1.0",
    url = "<- URL ->"
}

public OnPluginStart()
{
    RegServerCmd("sq_test", SQ_Test);
    
    PrintToServer("return %d", CreateServerQuery("www.test.com", 28010, QT_Info, TestCallBackOne));
}

public Action:SQ_Test(args)
{
    CreateServerQuery("www.test.com", 28010, QT_Players, TestCallBackOne);
    CreateServerQuery("www.test.com", 28010, QT_Rules, TestCallBackOne);
    return Plugin_Handled;
}

public TestCallBackOne(Handle:DataTrie, const String:ServerIP[], ServerPort, QueryType:type, DataSize)
{
    switch (type)
    {
        case QT_Info:
        {
            decl String:hostname[256], String:version[32];
            new app, num;
            GetServerString(DataTrie, DT_HostName, hostname, sizeof(hostname));
            GetServerString(DataTrie, DT_Version, version, sizeof(version));
            GetServerCell(DataTrie, DT_Max, app);
            GetServerCell(DataTrie, DT_Num, num);
            
            PrintToServer("\n\n\"hostname\" is \"%s\"\n\"version\" is \"%s\"\n\"protocol\" is \"%d\"\n\"DataSize\" is \"%d\"\n\"num\" is \"%d\"\n\n", hostname, version, app, DataSize, num);
            LogMessage("\n\n\"hostname\" is \"%s\"\n\"version\" is \"%s\"\n\"protocol\" is \"%d\"\n\"DataSize\" is \"%d\"\n\n", hostname, version, app, DataSize);
        }
        case QT_Players:
        {
            new count = GetPlayerCount(DataTrie), kills, Float:pltime;
            decl String:name[32];
            if (GetPlayerData(DataTrie, 1, name, sizeof(name), kills, pltime))
            {
                LogMessage("\n\n\"name\" is \"%s\"\n\"kills\" is \"%d\"\n\"play time\" is \"%f\"\n\"count\" is \"%d\"\n\n", name, kills, pltime, count);
                PrintToServer("\n\n\"name\" is \"%s\"\n\"kills\" is \"%d\"\n\"play time\" is \"%f\"\n\"count\" is \"%d\"\n\n", name, kills, pltime, count);
            }
        }
        case QT_Rules:
        {
            new count = GetRulesCount(DataTrie);
            decl String:name[256], String:value[256];
            if (GetRulesData(DataTrie, 80, name, sizeof(name), value, sizeof(value)))
            {
                LogMessage("\n\n\"name\" is \"%s\"\n\"value\" is \"%s\"\n\"count\" is \"%d\"\n\n", name, value, count);
                PrintToServer("\n\n\"name\" is \"%s\"\n\"value\" is \"%s\"\n\"count\" is \"%d\"\n\n", name, value, count);
            }
        }
    }
}

Tested On CS:GO and word fine !
Source
Download the last version.

[Zephyrus]

pointless, could be done with sockets extension and it has been already done before

https://forums.alliedmods.net/showthread.php?p=1036475

[K.K.Lv]

Thx your link Zephyrus.I haven't search before I post this thread.
and I will add more feature something like query player or rules or ping.

[Peace-Maker]

It could still be done in sourcepawn ;) You should consider writing some sourcepawn library instead of an extension.

[K.K.Lv]

I think extension will more efficient than a sourcepawn library
of course I will gald to make a library with sourcepawn.

[K.K.Lv]

a small update !

[VoiDeD]

Originally Posted by K.K.Lv I think extension will more efficient than a sourcepawn library

Far from it. Your extension is using blocking sockets and absolutely no threading.

There's no reason to use this over the socket extension.

On top of this, your get_string_info contains a memory leak. Given that, I imagine more of the code causes leaks, but I only gave it a cursory look.

[K.K.Lv]

Your extension is using blocking sockets and absolutely no threading.

you are right,i have found this point,and i was trying to use another way like socket extension

about the memory, I use the class, so I think the memory will be free when the class end(am I correct ?).
any problem please point it out .

at the end thx your post

[FaTony]

Originally Posted by K.K.Lv about the memory, I use the class, so I think the memory will be free when the class end(am I correct ?).

Nope, for any new there must be a corresponding delete. And if third party library requires manual deallocation, you must do it.

[K.K.Lv]

update a new version !