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ID Dateup Icon Author Author Email Category OS ELOG Version Subject
  69198   Mon Aug 10 07:56:43 2020 Idea HyonSan Seohyon.san.seo@cern.chBug reportLinux3.1.4SSL connection drop with large content

Dear all,

 

I had some difficulty to upload large files (>20MB) with SSL connection. I think it is also related to https://elog.psi.ch/elogs/Forum/68636

During debuging, I found that, when uploading large files, ssl connection is dropped since 'SSL_read' function returns -1.

But it doesn't alway mean broken connection. It may be "SSL_ERROR_WANT_READ".

I changed the "server_loop" function in the source code to "continue" when it is SSL_ERROR_WANT_READ. And it fixed the problem.

Here is my code.

## elogd.c "server_loop" function L30031

                        if (FD_ISSET(_sock, &readfds)) {
#ifdef HAVE_SSL
                          if (_ssl_flag){
                            i = SSL_read(_ssl_con, net_buffer + len, net_buffer_size - len);
                            if(i<=0){
                              int ssl_error=SSL_get_error(_ssl_con,i);    ## check ssl error code
                              if(ssl_error==SSL_ERROR_WANT_READ||ssl_error==SSL_ERROR_WANT_WRITE) continue;    ## if ssl wants more, continue
                            }
                          }
                          else
#endif
                            i = recv(_sock, net_buffer + len, net_buffer_size - len, 0);
 

 

I am ignorant about networking. Some experts on ssl connection would know a better way to deal with this problem.

 

Best,

HyonSan Seo

 

  69199   Mon Aug 10 08:33:42 2020 Reply Stefan Rittstefan.ritt@psi.chBug reportLinux3.1.4Re: SSL connection drop with large content

Your solution sounds quite good, I will incorporate them in the distribution.

Stefan

HyonSan Seo wrote:

Dear all,

 

I had some difficulty to upload large files (>20MB) with SSL connection. I think it is also related to https://elog.psi.ch/elogs/Forum/68636

During debuging, I found that, when uploading large files, ssl connection is dropped since 'SSL_read' function returns -1.

But it doesn't alway mean broken connection. It may be "SSL_ERROR_WANT_READ".

I changed the "server_loop" function in the source code to "continue" when it is SSL_ERROR_WANT_READ. And it fixed the problem.

Here is my code.

## elogd.c "server_loop" function L30031

                        if (FD_ISSET(_sock, &readfds)) {
#ifdef HAVE_SSL
                          if (_ssl_flag){
                            i = SSL_read(_ssl_con, net_buffer + len, net_buffer_size - len);
                            if(i<=0){
                              int ssl_error=SSL_get_error(_ssl_con,i);    ## check ssl error code
                              if(ssl_error==SSL_ERROR_WANT_READ||ssl_error==SSL_ERROR_WANT_WRITE) continue;    ## if ssl wants more, continue
                            }
                          }
                          else
#endif
                            i = recv(_sock, net_buffer + len, net_buffer_size - len, 0);
 

 

I am ignorant about networking. Some experts on ssl connection would know a better way to deal with this problem.

 

Best,

HyonSan Seo

 

 

  69200   Mon Aug 10 09:01:24 2020 Reply Anthonyanthony.weathers@pm.meQuestionLinux3.1.3-1-1Re: Reverse sort by Attribue, but it's only showing the last 6 entries by default.

Thank you, Andreas!  Not sure why I kept overlooking it in the manual.  As for the number of entries when I sort, I'm not sure.  I'll set it up to display a larger number and see what happens.

Andreas Luedeke wrote:

It is described in the manual at https://elog.psi.ch/elog/config.html#general

Entries per page = <number>

Funnily the default is "20". I have no idea why you see 6 entries.

Anthony wrote:

Hi,

I'm trying to use the Sort Attributes option to sort all entries by a user specified date.  The issue I'm running into, is that although I can get it to work, it seems to only display the last 6 entries that I'm sorting by.  If I click "All" to show all the entries, it's sorted perfectly. I'm using:

Sort Attributes = Due Date

Reverse sort = 0

Is there something I'm missing to get this working.  Reading through the manual nothing jumped out at me.

 

 

  69201   Mon Aug 17 10:34:32 2020 Question Lahreche Abdelmadjidabdelmadjid.lahreche@yahoo.comRequestWindows2006do some changes on .CFG

Hi All,

I would like to have "Permis de verouillage et d'étiquetage 016685-68AF-0031" when I select it.

I don't found where can I make this change

thank you.

 

 

Attachment 1: Elog_1.PNG
Elog_1.PNG
Attachment 2: Elog2.PNG
Elog2.PNG
  69202   Mon Aug 17 13:27:09 2020 Reply Andreas Luedekeandreas.luedeke@psi.chRequestWindows2006Re: do some changes on .CFG

This has nothing to do with the ELOG package, but only with your local configuration of that specific logbook.
You should contact your local ELOG administrator.

Or you might want to rephrase you question: do you want to have this text added in the text field when selecting the field specifier?
How that can be done depends on your specific configuration. Since you are apparently already using a form in the text field, it might be tricky.

Lahreche Abdelmadjid wrote:

Hi All,

I would like to have "Permis de verouillage et d'étiquetage 016685-68AF-0031" when I select it.

I don't found where can I make this change

thank you.

 

 

 

  69203   Tue Aug 18 11:28:58 2020 Reply Lahreche Abdelmadjidabdelmadjid.lahreche@yahoo.comRequestWindows2006Re: do some changes on .CFG

Thanks, but I'm the Admin of local ELOG.

usually I can make a lot of changes on my files .CFG But this time no way.

when I select one of the choice i've a text who appear with the right text (code), but only with this choice "Permis de verouillage et d'étiquetage 016685-68AF-0031"

the text appeared is false.

Andreas Luedeke wrote:

This has nothing to do with the ELOG package, but only with your local configuration of that specific logbook.
You should contact your local ELOG administrator.

Or you might want to rephrase you question: do you want to have this text added in the text field when selecting the field specifier?
How that can be done depends on your specific configuration. Since you are apparently already using a form in the text field, it might be tricky.

Lahreche Abdelmadjid wrote:

Hi All,

I would like to have "Permis de verouillage et d'étiquetage 016685-68AF-0031" when I select it.

I don't found where can I make this change

thank you.

 

 

 

 

  69204   Wed Aug 19 15:22:58 2020 Question Andreas Luedekeandreas.luedeke@psi.chRequestWindows2006Re: do some changes on .CFG

How are we supposed to give you a hint when you don't post your configuration?

Lahreche Abdelmadjid wrote:

Thanks, but I'm the Admin of local ELOG.

usually I can make a lot of changes on my files .CFG But this time no way.

when I select one of the choice i've a text who appear with the right text (code), but only with this choice "Permis de verouillage et d'étiquetage 016685-68AF-0031"

the text appeared is false.

Andreas Luedeke wrote:

This has nothing to do with the ELOG package, but only with your local configuration of that specific logbook.
You should contact your local ELOG administrator.

Or you might want to rephrase you question: do you want to have this text added in the text field when selecting the field specifier?
How that can be done depends on your specific configuration. Since you are apparently already using a form in the text field, it might be tricky.

Lahreche Abdelmadjid wrote:

Hi All,

I would like to have "Permis de verouillage et d'étiquetage 016685-68AF-0031" when I select it.

I don't found where can I make this change

thank you.

 

 

 

 

 

  69205   Wed Aug 26 20:41:50 2020 Reply Stefan Rittstefan.ritt@psi.chBug reportLinux3.1.4-2Re: SSL does not work

Today I succeeded with the help of L.JR to produce a new RPM which contains SSL, KRB5, PAM and LDAP support. It's uploaded to https://elog.psi.ch/elog/download/RPMS/elog-3.1.4-2.el7.x86_64.rpm

Hisataka YOSHIDA wrote:

Dear Stefan,

Thank you for your comment. I successfuly compiled the latest elog from source code, and now elogd could work with SSL.

In fact, I reported the case of installation with rpm file. Maybe, the latest elog rpm doesn't support SSL, I guess.
The installtion with rpm file is easier to build the common environment, so I hope the next rpm will support the SSL.

best regards,
Hisataka YOSHIDA

Stefan Ritt wrote:

When you compile elog from the soruces, you need the OpenSSL library to be installed. The CMake build process will then find it and include it in the compile process. When you use the "make" build process, you have to make sure that SSL is enabled there:

USE_SSL = 1

To install the OpenSSL library, you can do on most systems something like "sudo yum install openssl-dev" or "sudo apt-get install openssl-dev"

/Stefan

 

Hisataka YOSHIDA wrote:

Hello.

I installed the latest elog (3.1.4-2) in CentOS 7, and it is working well without SSL.
When I enalbled SSL option (SSL = 1) in the "elogd.cfg", and tried to start the elogd, the message below was shown and failed to run.

SSL support not compiled into elogd

If I switched the elog to older one (3.1.4-1), I could successeed to run the elogd with SSL option.
Is there any other option required in the latest elog to run with SSL? Or is this bug in the latest version?

Thank you,
Hisataka YOSHIDA

 

 

 

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