Re: ssh_userauth_none crashes

[Yang Yubo <yang@xxxxxxxxxxxx>]

Do you have any logs printed by libssh? If you don’t have, use this line to enable logging:

ssh_options_set(session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);

Set verbosity to SSH_LOG_FUNCTIONS will reals very detailed info that may provide clues.

BR,

Yang

> On Oct 19, 2015, at 13:39, Sruthi Mohan (RBEI/EIA1) <Sruthi.Mohan@xxxxxxxxxxxx> wrote:
> 
> HI,
> Thanks Yang
> I tried doing ssh_init() and It returns success.
> The problem still persists.
> Checked mySshSession before ssh_userauth_none  .it is still valid.
>  
> The device perfectly logs in with putty.
> Could it be something to do with device permissions? The same code worked earlier. I don’t remember changing the code, Now its giving issues.
> It would be great If somebody can help.
>  
> Sample code below:
> ssh_init();
>     ssh_options_set(mySshSession, SSH_OPTIONS_HOST, IPAddress.toStdString().c_str());
>     ssh_options_set(mySshSession, SSH_OPTIONS_PORT, &port);
>     ssh_options_set(mySshSession, SSH_OPTIONS_USER, User.toStdString().c_str());
>  
>     rc = ssh_connect(mySshSession);
>     if (rc==SSH_OK)
>     {
> int rc =ssh_userauth_none(mySshSession, NULL);
>     if (ssh_pki_import_pubkey_file(PublickeyFile.toStdString().c_str(), &pubkey) != SSH_OK) {
>         qDebug()<<"Failed to import the key";
>         return DDM_ERR;
>     }
>     }
>     }
>  
>  
> Best regards 
> 
> Sruthi Mohan
> RBEI/EIA1
> 
> Tel. +91(80)6783-7826 
> 
> From: Yang Yubo [mailto:yang@xxxxxxxxxxxx <mailto:yang@xxxxxxxxxxxx>] 
> Sent: Sunday, October 18, 2015 7:54 AM
> To: libssh@xxxxxxxxxx <mailto:libssh@xxxxxxxxxx>
> Subject: Re: ssh_userauth_none crashes
>  
> Did you called ssh_init() function to init libssh library?
>  
> /**
>  * @brief Initialize global cryptographic data structures.
>  *
>  * This function should only be called once, at the beginning of the program, in
>  * the main thread. It may be omitted if your program is not multithreaded.
>  *
>  * @returns             0 on success, -1 if an error occured.
>  */
> int ssh_init(void);
>  
> BR,
>  
> Yang
>  
> On Oct 18, 2015, at 10:06, Sruthi Mohan (RBEI/EIA1) <Sruthi.Mohan@xxxxxxxxxxxx <mailto:Sruthi.Mohan@xxxxxxxxxxxx>> wrote:
>  
> HI,
>  
> Attached files for SSH,
> Could be hempful if you could check
>  
> From: Yang Yubo [mailto:yang@xxxxxxxxxxxx <mailto:yang@xxxxxxxxxxxx>] 
> Sent: Friday, October 16, 2015 6:43 PM
> To: libssh@xxxxxxxxxx <mailto:libssh@xxxxxxxxxx>
> Subject: Re: ssh_userauth_none crashes
>  
> Hi Sruthi,
>  
> I use libssh in one of my application, didn’t ever encounter such ssh_userauth_none crash error.
>  
> It looks like some mySshSession was released or point to another memory address.
>  
> I think it would be better if you could paste full example code that can reproduce the issue.
>  
> Best
>  
> Yang
>  
> On Oct 16, 2015, at 18:59, Sruthi Mohan (RBEI/EIA1) <Sruthi.Mohan@xxxxxxxxxxxx <mailto:Sruthi.Mohan@xxxxxxxxxxxx>> wrote:
>  
> Dear sir,
> I am using libssh 0.7
> I have followed the following steps,
> ssh_connect(mySshSession);=succesful
>  
> Known host verification ==successful
>  
> ssh_userauth_none(mySshSession, NULL);
>  
> ssh_userauth_none crashes with the error
> Heap block at 27415180 modified at 27415240 past requested size of b8.
>  
> Any help would be appreciated
>  
>  
>  
> Best regards
>  
> Sruthi Mohan 
> RBEI/EIA1
>  
> Tel. +91(80)6783-7826
>  
> <myipconnect.cpp><myipconnect.h><datatypes.h>