[lexzor]

hello. I'm trying to make an autoupdater for a plugin with curl, but i don t get how to use it. I was looking up on Bugsy's vacbans when i realized that i don't understand a single thing of that curl.

that is the code i was trying to make

PHP Code:

#include <amxmodx>
#include <curl>

#define CURL_BUFFERSIZE 4096

public plugin_init()
{
    register_plugin("CURL Test", "1.0", "-");
}

public curl_test()
{
    new szCURL_url[128]
    new szLatestVersion[4]
    new CURL:cURLHandle
    new const szCurlErrorBuffer[CURL_BUFFERSIZE]

    formatex(szCURL_url, charsmax(szCURL_url), "https://lexzor.warface.ro/AutoUpdate/Test/version.txt")

    cURLHandle = curl_easy_init()

    if(cURLHandle)
    {
        curl_easy_setopt(cURLHandle, CURLOPT_URL, szCURL_url)
        curl_easy_setopt(cURLHandle, CURLOPT_CAINFO, szLatestVersion )
    }

    
} 


i didn't find any info about const CURLOPT_CAINFO in .inc file so i don t know how to use it.

First of all, i tried to read a site: https://lexzor.warface.ro/AutoUpdate/Test/version.txt

From links like this i would like to read latest versions of my plugins.

Can i get some help with this ?

[HamletEagle]

You already got a link to documentation in the other thread. https://curl.se/libcurl/c/
Use it.

For example, for CURLOPT_CAINFO you would click on curl_easy_setopt, then search for CURLOPT_CAINFO and finally get here: https://curl.se/libcurl/c/CURLOPT_CAINFO.html

Also google for curl tutorials and examples. They may be in C, but the API is very similar.
If you use linux or WSL you can always play with "curl" from command line to get a better feel for how it works. For example:

curl https://lexzor.warface.ro/AutoUpdate/Test/version.txt

will give you:

snip:~$ curl https://lexzor.warface.ro/AutoUpdate/Test/version.txt
999
snip:~$

[lexzor]

I don't understand a shit, i need smth like a tutorial, but i m giving up.

thanks 4 ur help

[Bugsy]

You will not find an AMX-X tutorial for cURL, but as HamletEagle said, find an example written in C and just code it in AMX-X as the API is pretty much identical.

[Napoleon_be]

Have you checked this out? https://github.com/Polarhigh/AmxxCur...s/http_get.sma

And this? https://forums.alliedmods.net/showthread.php?t=285656

What are you trying to achieve?

[lexzor]

Every time i get another output, but in console because i can t write the file.

PHP Code:

#include <amxmodx>
#include <curl>

#define CURL_BUFFER_SIZE 4096

public plugin_init()
{
    register_plugin("CURL Test", "1.0", "-");

    set_task(0.1, "curl_test")
}

public curl_test()
{
    new szCURL_url[128]
    new CURL:cURLHandle
    new data[1]
    data[0] = fopen("addons/amxmodx/data/test.txt", "wb")

    formatex(szCURL_url, charsmax(szCURL_url), "https://lexzor.warface.ro/AutoUpdate/Test/version.txt")

    cURLHandle = curl_easy_init()

    if(cURLHandle)
    {
        curl_easy_setopt(cURLHandle, CURLOPT_BUFFERSIZE, CURL_BUFFER_SIZE)
        curl_easy_setopt(cURLHandle, CURLOPT_URL, g_CURL_URL)
        curl_easy_setopt(cURLHandle, CURLOPT_WRITEDATA, data[0])
        curl_easy_setopt(cURLHandle, CURLOPT_WRITEFUNCTION, "write" )
        curl_easy_perform(cURLHandle, "complite", data, sizeof(data))
        server_print("%i", data[0])
    }
}

public write (data[], size, nmemb, file)
{
   new actual_size = size * nmemb;
   // server_print("%i", actual_size)
   fwrite_blocks(file, data, actual_size, BLOCK_CHAR)
  // server_print("%s : %s", file, data)
   return actual_size
}

public complite(CURL:curl, CURLcode:code, data[])
{
  if(code == CURLE_WRITE_ERROR)
     server_print("transfer aborted")
  else
     server_print("curl complete")
  
  fclose(data[0])

  curl_easy_cleanup(curl)
} 


[HamletEagle]

You have to access the data when the callback is called, printing it right after you send the request is useless and prone to race conditions.

[Bugsy]

Your above code successfully wrote a text file for me containing '998', what is the problem?

Please explain what you are trying to do.

[lexzor]

I m trying to make an auto updater using curl. I want to check the version from a .txt file and if is not the same with plugin verison then download the plugin from webhost.

The problem with the above code is that i get no output data in .txt file.

In first instance i was thinking that i don't install correctly the curl module and that was right, in modules.ini i wrote only "curl" then i saw a post here and modify it in curl_amxx, but i get the same result:
- no data .txt file.
- different output in console
- First map change: 167226000
- Second map change: 167339376
and so on...
every time different output.

I m using amxx 1.9. Does it matter if i'm using hlds or rehlds?

[Bugsy]

No need to write to a local file

PHP Code:


#include <amxmodx>
#include <curl>

#define CURL_BUFFER_SIZE 4096

new g_iNewVersion;

public plugin_init()
{
    register_plugin("CURL Test", "1.0", "-");
    
    IsUpgradeNeeded( 997 );
    //IsUpgradeNeeded( 998 );
}

public IsUpgradeNeeded( iCurrentVersion )
{
    new szCURL_url[128]
    new CURL:cURLHandle
    new data[8]
    
    num_to_str( iCurrentVersion , data , charsmax( data ) );
    
    copy(szCURL_url, charsmax(szCURL_url), "https://lexzor.warface.ro/AutoUpdate/Test/version.txt")
    
    cURLHandle = curl_easy_init()
    
    if(cURLHandle)
    {
        curl_easy_setopt(cURLHandle, CURLOPT_BUFFERSIZE, CURL_BUFFER_SIZE)
        curl_easy_setopt(cURLHandle, CURLOPT_URL, szCURL_url)
        curl_easy_setopt(cURLHandle, CURLOPT_WRITEDATA, data[0])
        curl_easy_setopt(cURLHandle, CURLOPT_WRITEFUNCTION, "WriteFunction" )
        curl_easy_perform(cURLHandle, "CurlCallback", data, sizeof(data))
    }
}

public WriteFunction (data[], size, nmemb, file)
{
    new actual_size = size * nmemb;
    
    g_iNewVersion = str_to_num( data );
    
    return actual_size
}

public CurlCallback(CURL:curl, CURLcode:code, data[])
{
    if(code == CURLE_WRITE_ERROR)
    {
        server_print("transfer aborted")
    }
    else
    {
        server_print("curl complete")
    
        new iCurrentVersion = str_to_num( data );
    
        server_print( "Upgrade %s needed [Is %d > %d ?]" , ( g_iNewVersion > iCurrentVersion ) ? "is" : "not" , g_iNewVersion , iCurrentVersion );
    }
    
    curl_easy_cleanup(curl)
} 


IsUpgradeNeeded( 997 );
Output:

Upgrade is needed [998 > 997]

IsUpgradeNeeded( 998 );
Output:

Upgrade not needed [Is 998 > 998 ?]