JSch Activity
Status: Alpha
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Activity for JSch
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Ramkumar created ticket #41
Incorrect password during login makes twice login attempts
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Rethinakumar Ramachandran created ticket #137
JSch - Auth Fail - Private Key - RHEL 8 and FIS implemented in Server
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I am also facing a same issue, Not working for me even if i change to 2 I am getting Auth Fail. RHEL 8 (FIS security system) enabled in server. Any one can help to connect it?
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lhw posted a comment on discussion Help
Hi, Does anyone know if this library has reached EOS and if so, when?
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John Giltner posted a comment on ticket #136
Thanks for updating with the <lf> vs. <crlf> issue. We just noticed this and I was getting ready to update when I saw your post. </crlf></lf>
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Wyatt posted a comment on ticket #136
There are two related issues here, both of which prevent connecting to Microsoft's Azure SFTP server, and presumably others which are strict to the RFCs. The client version string as listed above, and using a single LF vs. CR+LF after it. Fixing these two issues allows connection to Azure. Both changes are in Session.java. Line 71: private byte[] V_C=Util.str2byte("SSH-2.0-JSCH-"+JSch.VERSION); // client version needs to change to: private byte[] V_C=Util.str2byte("SSH-2.0-JSCH_"+JSch.VERSION); //...
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I know this is old, but it appears that you are using CoZ:SFTP on the z/OS side. Can you try specifying the remote file as: /-/!DTS4.UP.G5TB.S60301 This is one of the documented formats for specifying z/OS file names in the CoZ:SFTP documentation.
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Identification string invalid based on RFC4253
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Bernhard Falk posted a comment on ticket #10
Hello ! Can you give me a hint how to applicate the patch using the "patch" comand in linux terminal ? Or is there an other way to get a patched JSCH ? Thanks in advance Bernhard
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Denis Bredelet posted a comment on discussion Help
The source code is not public. See: https://www.eclipse.org/lists/cross-project-issues-dev/msg16219.html Although, here is what looks like Jsch 0.1.55 source code: https://download.eclipse.org/oomph/archive/reports/download.eclipse.org/releases/2021-09/index/com.jcraft.jsch.source_0.1.55.v20190404-1902.html
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Imran Murtaza posted a comment on discussion Open Discussion
Hi there! I have a connecting issue in my server using this. Can anyone please help me out. Thanks
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Jesse Gorzinski created ticket #135
Invalid privatekey with latest version of PuTTY
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Michael C Golledge posted a comment on ticket #130
This looks very much like a threading issue since the reproduction is so unpredictable. For a while, I thought this was caused by our own app threads, or a failure of the library to protect itself from being used in a multithreaded context. But, as my test case evolved, it became apparent that it was not our use of threads causing the problem. I synchronized all the JSch calls so that only a single one of our threads can use the lib at a time, and it still reproduced. Since app threads are reduced...
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Tanmay Majumdar created ticket #134
java.net.SocketException: Socket is not connected (Read failed)
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gaowenzhi created ticket #40
What can cause the ssh connection exit when I create the ssh with jsch
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Mohammed Shabbir posted a comment on ticket #39
on further analysis, its found that the issue is due to wildcard character ( * ) due to which glob_remote throws ArrayIndexOutOfBoundException. workaround do ls and give complete file name as paramter to get method. followed below steps 1. set change directory 2. do ls to get all the files (its available in vectors) 3. give complete file name as source for the get method
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i'm able to bypass that issue by setting the change directory on the sftp channel. So this ticket can be closed but it will be good if we can find a way to reset the buffer externally so that it doesn't throw ArrayIndexOutOfBoundException
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ArrayIndexOutOfBoundException occurring while using Jsch sftp channel
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Eugen modified a comment on ticket #132
We also experienced that session.connect() hangs indefinitely (with versions 0.1.49 and 0.1.55) before connect() the timeout was set (with session.setTimeout()) but this timeout has no effect during the authentication in connect() We did find a workaround (by configuring a different order of authentication methods) but the issue of hanging should be addressed nevertheless. Our suggestion: the configured session timeout should also terminate long connect() or there need to be another possibility to...
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We also experienced that session.connect() hangs indefinitely. before connect() the timeout was set (with session.setTimeout()) but this timeout has no effect during the authentication in connect() We did find a workaround (by configuring a different order of authentication methods) but the issue of hanging should be addressed nevertheless. Our suggestion: the configured session timeout should also terminate long connect() or there need to be another possibility to configure authentication timeout...
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RAMAKRISHNA BAKALE created ticket #133
multiple sessions, channel inputstream read, hangs forever
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Simone created ticket #132
Session.connect() hangs without any timeout and response. It blocks the whole JVM
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Diego Scaravaggi modified a comment on discussion Help
Hi All, in the source code of ChannelSftp.java, the method quit(), just disconnect channell client side. Some sftp server implement QUIT verb for explicit close session. the difference is only that after sending QUIT all resources are deallocated from server, just close channell peer side keep sockets in FIN wait for some minutes. In case of massive login logout session with ChannelSftp.java, sftpserver DDOS protection throttle disable the access or in some cases get exhausted connections. Why not...
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Hi All, in the source code of ChannelSftp.java, the method quit(), just disconnect channell client side. Some sftp server implement QUIT verb for explicit close session. the difference is only the after sending QUIT all resources are deallocated from server, just close channell peer side keep sockets in FIN wait for some minutes. In case of massive login logout session with ChannelSftp.java, sftpserver DDOS protection throttle disable the access or in some cases get exhausted connections. Why not...
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Alex Stumpf created ticket #131
Documentation: Missing HMAC in Feature list
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ravi posted a comment on discussion Open Discussion
Hi, One of our plugin is using the following jars: jsch-0.1.49.jar jsch-0.1.55.jar We want to confirm if the above jars have support for java 11 or not? any help would be highly appreciated. Thanks & Regards, Ravi
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Hi, I need to confirm, whether jsch-0.1.55.jar is suported on OPEN JDK platform or not? Any suggestion would be highly appreciated. Thanks, Ravi
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Björn Kautler posted a comment on ticket #8
Nice @matez, does this fully support it though? local port => remote socket local socket => remote socket local socket => remote port remote port => local socket remote socket => local socket remote socket => local port From a quick look it seems you are only providing a small subset.
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Lorinczy Zsigmond created ticket #13
Unix line-end in PPK files
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Mind you, the fork uses Java8+ features, while the original can be compiled with Java5
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vikas jain posted a comment on ticket #98
I am struggling with this NLP issue for past 5 days. Any resolution to issue ?
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Radu Coravu posted a comment on ticket #129
Thanks Tobias, I will keep this in mind.
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Tobias Hochgürtel posted a comment on ticket #129
Hello Radu Coravu, It looks like that there is now someone how forked this project https://sourceforge.net/p/jsch/bugs/119/#efc6
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The correct link to the fork is: https://github.com/mwiede/jsch (witout a dot at the end) :)
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Jeremy Norris posted a comment on ticket #119
rsa-sha2-256 & rsa-sha2-512 as per RFC 8332 has been implemented in fork at https://github.com/mwiede/jsch.
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Matthias Wiedemann posted a comment on ticket #11
+1
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I extended jsch ith your requested feature. Please checkout https://github.com/mwiede/jsch
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Venugopal Tatavarthi created ticket #130
We get such a com.jcraft.jsch.JSchException: verify: false when we want to connect to an SshSession
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+1 we are also interested in having this work for SFTP connections.
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Wolfgang Fahl posted a comment on ticket #11
Please move to github ...
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Andreas Zingel posted a comment on ticket #98
The same problem here with Jsch Sat Sep 03 18:41:49 JST 2016 version=0.1.54 and Mon Nov 26 10:15:11 JST 2018 version=0.1.55 on Windows 10 with Cygwin64 and OpenSSH We are using an by passphrase encrypted PKCS8 private key. In KeyPairPKCS8 this structure cannot be read /* from RFC5208 PrivateKeyInfo ::= SEQUENCE { version Version, privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, privateKey PrivateKey, attributes [0] IMPLICIT Attributes OPTIONAL } The ASN.1 structure has only one member. Thus we...
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Lothar Kimmeringer posted a comment on ticket #108
Why do you see that as a problem? Theis method's purpose is to send an absolute path. So it's checked if the given path is absolute and if not, the working directory is added in front. That's exactly what's happening with your example, so the path being sent to the server is e.g. /home/myuser/../../../etc/password. There are completely valid reasons why you want to send a path like this to a server, it's the server's obligation to restrict access to /etc/password no matter how the path is received...
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eed3si9n created ticket #129
"JSchException: invalid privatekey" on OpenSSH 7.8 and above
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hrushi created ticket #38
Ciphers support in JSCH
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don_pavlov created ticket #11
Move to github
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Would really love to see this change, because juice-ssh seems to rely on that to be working first in jsch.
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Paul Titheridge created ticket #128
Thread hangs in ChannelSftp.skip() following internal OutOfOrderException
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Marina Frid posted a comment on ticket #113
We see the same issue intermittently. It seems to get into infinite loop when c.rwsize=0; Not sure why this is happening but for sure code shouldn’t get into never ending loop. Does anyone know how rwsize variable didn't get changed from 0? Was there any fix for this issue after 1.54?
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Saranya posted a comment on discussion Help
Any updates on this?
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Workaround to find owner name: String longName = file.getLongname(); String[] attrs = longName.split("\\s+"); String ownername = attrs[2]; where file is an instance of LsEntry returned by the ChannelSFTP.ls
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manish posted a comment on discussion Help
Hi, We are getting randomly occuring error "org.eclipse.jgit.api.errors.TransportException: <gitlab_ssh_repo_url>/automate.git: channel is not opened." We are not able to identify the exact cause or not able to reproduce this behaviour evry time. We are using SSh to connect to the repo and connecting through jgit liberary. We have observed this behaviour specific to GitLab and not for github and bitbucket. Any help would be appriciated.</gitlab_ssh_repo_url> Thanks
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I was able to resolve this using the following new Date((long)file.getAttrs().getMTime()*1000L) where file is an instance of ChannelSftp.LsEntry
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How to get a remote file's last modified time? I am using the following but it shows date with year 1970 only. int mtime = entry.getAttrs().getMTime(); Date date = new Date (mtime); When printed the date is "Mon Jan 19 09:09:10 IST 1970". What should be changed here to find the exact last modified time?
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Using SftpATTRS.getUId(), it is possible to get only the user id. How to fetch the user name corresponding to the id?
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sajeesh posted a comment on discussion Help
Hi Team, One of the customer is connecting to the SFTP server to transfer files and intemmittently they are recieving below error messages " *java.io.IOException: End of IO Stream Read....en..i.N%J'" . The same error message is in the TCP dump also . The customer is using JSCH 0.1.51 and connecting to a globalscape EFT SFTP server . This issue is intermmittent and some time they are able to transfer files or can connect to sftp without any issues . Anyone aware of this error message relate to JSCH...
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dgu posted a comment on ticket #37
Even if I create new Session instance in each connection "java.net.ConnectException: Cannot assign requested address" happened again. It is a problem in my socket factory. The real problem is that if Session instance is reconnected then "com.jcraft.jsch.JSchException: Packet corrupt" happens. Workaround: Create a new Session instance for each connection.
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Th above test cases are done after I fixed my socket factory.
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Hello! I found a problem in my socket factory that It was trying to reuse socket closed by JSch. Here are the results of my test cases: With socket factory: 1- session.connect() --> works 2- session.disconnect() --> works immediately after disconnect 3- session.connect() --> "java.net.ConnectException: Cannot assign requested address" 1 minute later: 4- session.connect() --> "com.jcraft.jsch.JSchException: Packet corrupt" I'm not sure; but, it looks JSch can not handle disconnect properly and I got...
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"java.net.SocketException: Socket is closed" in next Session.connect()
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Anantharaman G created ticket #127
Thread running forever
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Fernando Rodriguez created ticket #126
cisco catalyst
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ninshiichinoe posted a comment on ticket #125
Ticket can be closed, it is working when I use: //TIxxAxx.Sxx.I.Axxx16x.xxx1.P111333 instead of: '//TIxxAxx.Sxx.I.Axxx16x.xxx1.P111333'
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JSch SFTP get MVS file from IBM z/OS fails: 2: No such file
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Hi, sFTP servers provide capability of authentication using both password and private key (Two factor authentication for ssh). Does JSCH supports this? Thanks, Hrushi
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Iger posted a comment on ticket #10
Hey! It's been some time, but if I remember correctly, nistp-256 was working out of the box (that was the actually hardcoded part). On Thu, Mar 14, 2019 at 11:36 AM Vineeth Chinmay Karra redviper@users.sourceforge.net wrote: Hello. Do you have any similar patch for ecdsa-sha2-nistp256 host key algorithm? [patches:#10] https://sourceforge.net/p/jsch/patches/10/ ecdsa 384 and 521 key verification broken* Status: open Group: Unstable (example) Created: Thu Apr 13, 2017 01:59 PM UTC by Iger Last Updated:...
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Vineeth Chinmay Karra posted a comment on ticket #10
Hello. Do you have any similar patch for ecdsa-sha2-nistp256 host key algorithm?
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Sanjeev Kulkarni posted a comment on discussion Help
Hi, We use Jsch in production in our aws envs, tested for transfers upto 80GB so far. Working on making it bigger. What's the transfer limit in JSch in one "transfer" thread? Thanks, Sanjeev
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Hi, We use Jsch in production in our aws envs, tested for transfers upto 80GB so far. Has anyone tested with terra bytes of data, in single transfer process (instead of dividing files into chunks and then merging them). In the latter case, there'll be complicatied handling in cases of failures, retry attempts etc./ What's the transfer limit in JSch in one "transfer" thread? Thanks, Sanjeev
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Sophie Stratton created ticket #12
Allow users to set alternate password encodings
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Jonathan created ticket #124
SSH Connection Timeout and Socket Connection Timeout seems to be not working on jsch-0.1.55.jar
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SJ created ticket #36
Supported SSH/SCP options
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Erin Brewer posted a comment on discussion Help
How about this, can anyone try connecting JSCH to eom-cbk-sftp-nlb-prod-2a0d6b9118dd64bf.elb.us-east-1.amazonaws.com and see if its successful or not? put in a dummy login/password as i don't think its even getting that far.
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Tomas Danek created ticket #123
Jsch Identification string not by the RFC 4253 spec
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Dylan Katz created ticket #11
Added support for 256 bit HMAC
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Anil Pandey posted a comment on ticket #35
com.jcraft.jsch.JSchException: SSH_MSG_DISCONNECT: 2 Protocol error: no matching DH grp found at com.jcraft.jsch.Session.read(Session.java:1004) at com.jcraft.jsch.Session.connect(Session.java:323) at com.jcraft.jsch.Session.connect(Session.java:183)
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jsch 0.1.54 SSH_MSG_DISCONNECT: 2 Protocol error: no matching DH grp found
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Any thoughts or opinions? If i could get someone just to say yay/nay about the protocal/library/version compatability being the likely culprit or if something else obvious is missing that would be much appreciated.
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Ashuickor Hendelson posted a comment on ticket #34
I created a duplicate in "Feature Requests". Please remove this ticket here. Thank You.
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Signature with an external private key
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One more thing: I'm talking about setPrvKey (not setPubKey)
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Sorry: Wrong Category. I don't know how to move it to the Feature Requests
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Signature with an external private key
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Oh, and sometimes it hangs at the very beginning of the process and i get nothing in the logs at all. In this case it sits forever (longested i waited was 5 minutes) until i kill the process. And then randomly it will switch to the other mode originally described above.
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Stuck trying to figure out why can't connect to a particular host (amazon aws if that matters). Can connect to other SFTP sites. Would very much appreciete some help, i've tried every combination of suggestion even vaguely related to this. I've upgraded JSCH from 1.54 to 1.55 (from posts concerning signature bugs with ecdsa-sha2-nistp384). Running Java 1.8.0_144 From the posts i've found, the error in the logs "timeout in waiting for rekeying process" is related to timeout waiting for interactive...
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Sorry for inconvience Michael. But I was not sure where to open the request for assistent so I opened one at here and another one in support.
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Michael Osipov posted a comment on discussion Help
Why are you writing this twice? Here and in bug tickets? This is unprofessional.
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Hi, We know that JSCH lib supports the Kerberos authentication. So We need help on below questions on same - - from which version of JSCH lib Kerberos authentication supported - Is Kerberos authentication by default supported? or we need to set some parameter while executing the sftp command through code to enable the Kerberos authentication. - What additional things we need to take care while executing sftp command through Kerberos authentication. It would be really helpful if you have some document...
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JSCH Lib kerberos authentication
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I have retried the very same opration with wagon-ssh-external which uses ssh(1). No hang here. So must be an issue with JSch. See details in downstream issue.
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I have retried the very same opration with wagon-ssh-external which uses ssh(1). No hang here. So must be an issue with JSch.
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This new code has been introduced in WAGON-537. The fundamental difference is that the previous code request to stream the only remaining amount of bytes and the new one the at most the amount of bytes available to the buffer which is more than 916,
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This new code has been introduced in WAGON-537. The fundamental difference is that the previous code request to stream the only remaining amount of bytes and the new one at most the amount of bytes available to the buffer which is more than 916,
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JSch input stream hands on repeated reads after EOF
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Rahul Makwana posted a comment on ticket #111
Good Job Jurrie.Don't get disappointed with JSch team.Keep up the Good work. You have helped many individual Groups in resolving this way before JSch team came up with solution.:)
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SuperPat created ticket #121
Jsch does not throw exception when no space available
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shayas posted a comment on discussion Help
Overview: End of IO Stream Read when expecting SSH_MSG_KEX_DH_GEX_GROUP The question: I would like to know if I can make some adjustments or that jsch lacks the kex alogrithm I need. Details: 1. I know that the remote machine is conifgured with kex key size of 8192. logs: 2018-12-13 11:43:51,260 Connecting to 192.168.81.127 port 22 2018-12-13 11:43:51,260 Connection established 2018-12-13 11:43:51,275 Remote version string: SSH-2.0-UeI70aCAZ 2018-12-13 11:43:51,275 Local version string: SSH-2.0-JSCH-0.1.53...
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Michael Cunningham posted a comment on discussion Help
I have an Windows/Java application which executes commands on a linux box. One particular command kills processes, but this intermittently fails, just does nothing, not even an exception. public static Session getSession(String ipAddressOfLinuxBox) { try { JSch jsch = new JSch(); Session session = jsch.getSession("root", ipaddress, 22); session. setPassword("blahblah"); session.setConfig("StrictHostKeyChecking"; "no"); } catch (JSchException je) {throw je;} } public static List<string> executeExecCommand(String...
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Jurrie Overgoor posted a comment on ticket #111
It's been a while since I wrote my fix, so the details are a bit vague. But I wrote a unit test that fails on 0.1.54 with the error in question, and succeeds on 0.1.55. So I think the 0.1.55 release does actually fix this issue. I'm a little bit disappointed that the JSch team did not contact me, or mention me. Oh well, that's life I suppose :)
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Guenther Demetz posted a comment on ticket #111
The release notes of jsch-0.1.55 which was released 3 days ago among other says: -bugfix: fixed 'Invalid encoding for signature' errors in ssh-dss. I 'm wondering if this fixes also this issue....
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JSch released /jsch.jar/0.1.55/jsch-0.1.55.jar
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