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Module: Curl


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Levenus Supremus
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Join Date: Jan 2012
Location: St.Petersburg
Old 07-27-2016 , 07:20   Module: Curl
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Description:
AmxxCurl module is a wrapper over libcurl easy interface for amxmodx. Module performs curl's in non-blocking mode.

Download latest version here.

Few words about libcurl (from wiki page):
Quote:
libcurl is a free client-side URL transfer library, supporting FTP, FTPS, Gopher, HTTP, HTTPS, SCP, SFTP, TFTP, Telnet, DICT, the file URI scheme, LDAP, LDAPS, IMAP, POP3, SMTP and RTSP. The library supports HTTPS certificates, HTTP POST, HTTP PUT, FTP uploading, Kerberos, HTTP form-based upload, proxies, cookies, user-plus-password authentication, file transfer resume, and HTTP proxy tunneling.
So, this means that with this module you can send/check mails via IMAP, POP3 protocols; perform HTTPS requests (example); download/upload files over FTP (example). And it's only general capabilities. Here some examples written on C, but it almost that Pawn)

Natives:
All natives you can find in curl.inc, they have the same behaviour that C functions.

Except for some:
1)
Code:
native void:curl_easy_perform(const CURL:handle, const callbackComplite[], const data[] = {}, const data_len = 0)
The function starts curl perform, and upon completion of the transfer will be call callback callbackComplite. In third parameter you can specify an array of user data, wich will be transferred to callbackComplite, and fourth parameter is array length.

If user data set, callback should have the signature:
Code:
public compliteCallback(CURL:curl, CURLcode:code, data[])
else:
Code:
public compliteCallback(CURL:curl, CURLcode:code)
2)
Code:
native CURLcode:curl_easy_getinfo(const CURL:handle, const CURLINFO:info, any:...)
For string type of CURLINFO option, you must set fourth argument - string size:
Code:
new url[64]
curl_easy_getinfo(curl,CURLINFO_EFFECTIVE_URL, url, charsmax(url))
Important things
1) if you are using callback WRITEFUNCTION, always specify the option CURLOPT_BUFFERSIZE. Specify something about 512-1024, or risk getting a stack overflow error.
2) If you are would like to use READFUNCTION callback, set pragma dynamic in 16536 or more:
Code:
#pragma dynamic 16536
Author: Polarhigh (aka Levenus Supremus)
Source code: https://github.com/Polarhigh/AmxxCurl
Releases: https://github.com/Polarhigh/AmxxCurl/releases

Last edited by Levenus Supremus; 07-01-2019 at 04:25. Reason: removed dependence on SoLoader
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Location: Russia, Ivanovo
Old 07-27-2016 , 13:17   Re: Module: Curl
Reply With Quote #2

For amxx module you need install meta plugin? It is so crutch.
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Levenus Supremus
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Old 07-27-2016 , 13:27   Re: Module: Curl
Reply With Quote #3

openssl library is critically important library, such a solution allows to hot swap if in openssl current version vulnerability will found.

Last edited by Levenus Supremus; 07-27-2016 at 13:28.
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Shooting King
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Old 07-27-2016 , 17:05   Re: Module: Curl
Reply With Quote #4

Omg you made it first I though of adding it into ThreadedSockets

Also i don't think there is a need for it to be a MetaMod Plugin, even if its linked to Metamod or Amxmodx (which is in-turn linked to MM), the outcome would be the same.
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Old 07-27-2016 , 17:46   Re: Module: Curl
Reply With Quote #5

Quote:
Originally Posted by Levenus Supremus View Post
openssl library is critically important library, such a solution allows to hot swap if in openssl current version vulnerability will found.
Can't you integrate openssl library into your module?
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Neeeeeeeeeel.-
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Old 07-27-2016 , 19:04   Re: Module: Curl
Reply With Quote #6

Quote:
Originally Posted by [email protected] View Post
Can't you integrate openssl library into your module?
He has just stated WHY it is important (and critical) to have it separely...
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Last edited by Neeeeeeeeeel.-; 07-27-2016 at 19:05.
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Old 07-27-2016 , 19:49   Re: Module: Curl
Reply With Quote #7

Quote:
Originally Posted by Neeeeeeeeeel.- View Post
He has just stated WHY it is important (and critical) to have it separely...
Missed out, thx.
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Old 07-27-2016 , 22:41   Re: Module: Curl
Reply With Quote #8

ohh, good module
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Last edited by Destro-; 07-28-2016 at 14:20.
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Levenus Supremus
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Old 07-28-2016 , 10:22   Re: Module: Curl
Reply With Quote #9

Quote:
Originally Posted by Shooting King View Post
Omg you made it first I though of adding it into ThreadedSockets

Also i don't think there is a need for it to be a MetaMod Plugin, even if its linked to Metamod or Amxmodx (which is in-turn linked to MM), the outcome would be the same.
I'm not first too)
https://github.com/alldroll/curl_module

Ok, maybe you and [email protected] rights, but i thought that it better and simpler.

Quote:
Originally Posted by [email protected] View Post
Can't you integrate openssl library into your module?
In future.
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PartialCloning
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Join Date: Dec 2015
Old 08-04-2016 , 17:28   Re: Module: Curl
Reply With Quote #10

The natives should be documented with comments explaining how they work. I know they can be looked up, but an include file in itself should give you a general idea of how to work with the natives.
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