[SOLVED] LAMW and openssl
lazarus / 43-Android

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Mrbeam · 2019-09-23 08:39

I'm trying to port a working desktop app that needs openssll support
to android.

I'm using fphttpclient but when I try to access eg.
https://www.google.com I get error

"Cannot create a X509 certificate without SLL support"

I've added libcrypto.so and libssl.so to libs folder next to
libcontrols.so (libcrypto.so and libssl.so tested and working with qt
for android) but I get same error message.

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svd71 · 2019-09-23 09:07

Under Android Strudio did I with the import of two libraries: jgss.jar
and jsch(http://www.jcraft.com/jsch/). It work fine. You need to do
the only couple of wrapper classes from jsch.

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jmpessoa · 2019-09-23 21:28

Hi, svd71!

Can you put in some online drive a simple "Android Studio" [project]
example?

I can try implement a LAMW component wrapper.....

Thank you!

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Mrbeam · 2019-09-24 11:01

I did more tests and the problem is not ssl library, it's not working
with "http" either. App cannot create socket handler even though is
has internet access permission.

If you want to try just create a new LAMW Gui project, drop a button
and:

procedure TAndroidModule1.HttpClientGetSocketHandler(Sender: TObject;
    const UseSSL: Boolean; out AHandler: TSocketHandler);
begin
  If UseSSL then begin
    AHandler:=TSSLSocketHandler.Create;
    TSSLSocketHandler(AHandler).SSLType:=stTLSv1_2;
  end else
    AHandler:=TSocketHandler.Create;
end;

procedure TAndroidModule1.jButton1Click(Sender: TObject);
var s:string;
    http: TFPHttpClient;
begin
    if (InitSSLInterface) then
        ShowMessage('SSL libs ok!')
    else
        ShowMessage('No SSL libs!');
    http:=TFPHttpClient.Create(nil);
    http.OnGetSocketHandler := @HttpClientGetSocketHandler;
    http.AllowRedirect:=True;
    http.AddHeader('User-Agent','Mozilla');
    try
        s:=http.Get('https://www.google.com');
    except
        on E: Exception do
            ShowMessage(E.Message);
    end;
end;

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svd71 · 2019-09-24 12:56

Download link

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jmpessoa · 2019-09-24 16:38

@Mrbeam
Quotehttp.OnGetSocketHandler := @HttpClientGetSocketHandler;

In "mode delphi" change to:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
http.OnGetSocketHandler := HttpClientGetSocketHandler; 
What you need? A ftp client? a http client? etc...?


@svd71

I will try your code!

[curiosity: you can try LAMW "jcMikrotikRouterOS" component,
demo "AppJCenterMikrotikRouterOSDemo1"]

Thank you!

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Mrbeam · 2019-09-25 07:33

Thank you!

I need http(s) only.

My original project was in QT c++, with qt widgets on desktop and qml
on android for gui, but both versions were sharing the same logic code
in c++.

Now I ported desktop version to fpc Lazarus and I need cross platform
http requests and multithreading.

Multithreading tested and working cross platform but I can't make http
client to work. I only need LAMW for gui and keep all logic in native
fpc, project is big and I can't keep it updated on all platforms if
they don't share the same logic code.

I'm on Ubuntu 18.04, I don't have Android Studio installed, and I have
0 experience with java.

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jmpessoa · 2019-09-25 15:10

QuoteI've added libcrypto.so and libssl.so to libs folder next to
libcontrols.so (libcrypto.so and libssl.so tested and working with qt
for android) but I get same error message.

Do you have "libcrypto.so" and "libssl.so"  compiled for "arm-android"
[32 bits] and "aarch64-android"?

If yes, please, put its in some open/online drive... I will try some
tests....

Thank you!

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Mrbeam · 2019-09-26 08:54

32bit
https://www.dropbox.com/s/8bnotyqug42pghi/OpensslLibs.zip

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Thaddy · 2019-09-26 08:59

Aren't those 32 bit INTEL?

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Josh · 2019-09-26 15:31

followin has .so for 1.1.1
https://github.com/KDAB/android_openssl

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jmpessoa · 2019-09-26 16:01

NEW! jSFTPClient  [LAMW] component!

[based on java/jsch library]

NEW!  demo "AppSFTPClientDemo1"

Thanks to All!

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svd71 · 2019-09-26 16:17

thank. But I think, that SFTP isn't a target. SSH.Execute() is better
as some thnig other.

PS: A brange from hier:
 
   https://github.com/jmpessoa/lazandroidmodulewizard

and
  oficial update from Lazarus (over menu Package->Online Package
Manager) have many diffrent methods which skipped on github.

It is ok?

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Mrbeam · 2019-09-27 08:17

Solved!

I tried THTTPSend from synapse and everything working on both desktop
and mobile without any changes.

Thank you all!

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jmpessoa · 2019-09-27 14:56

QuoteI tried THTTPSend from synapse and everything working on both
desktop and mobile without any changes.

Great!!

Please,  put a simple LAMW example in some open/online drive...

So,  I will commit it to the LAMW github!

Thank you!!

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schumi · 2019-09-27 16:01

Quote from: Mrbeam on September 27, 2019, 10:17:56 amSolved!

I tried THTTPSend from synapse and everything working on both desktop
and mobile without any changes.

Thank you all!
I am interestet too

thanks

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Mrbeam · 2019-09-28 08:52

Demo
https://www.dropbox.com/s/5k5cvfxlgumrb69/AppDemoHttpGet.zip

Already compiled project for arm7, has OpenSSL libs compiled by me.

If you need 64bit or newer versions download OpenSSL libs from @josh
link.

EDIT:
There are some problems with the demo.

After http.UserAgent := UserAgent; add line
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
http.Headers.Append('content-type: text/html; charset=UTF-8');
After ShowMessage('Too many redirects!'); add
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
l.Free;http.Free;
Replace jTextView1.Append(Utf8EscapeControlChars(response)); with
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
jTextView1.Append(response);