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RE: Curl sftp fails with ssh-userauth service error
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From: Bharath Seshagiri \(EXT-Nokia\) via curl-library <curl-library_at_lists.haxx.se>
Date: Wed, 24 Jul 2024 12:33:11 +0000
Hi,
When I tried to do sftp it works fine. Even ssh also works fine. Sftp through curl command it fails.
root_at_5GSM-SRC234610033:/usr/libexec/openssh# sftp -i /etc/sftpkeys/id_dsa ftpuser@[2a00:8a03:190::6:6]
The authenticity of host '2a00:8a03:190::6:6 (2a00:8a03:190::6:6)' can't be established.
ED25519 key fingerprint is SHA256:sMBIAjYp+ocvtilunLSVkRcmMjvw3h7/TaqmnmJS+wM.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/root/.ssh/known_hosts).
hostfile_replace_entries: mkstemp: Read-only file system
update_known_hosts: hostfile_replace_entries failed for /home/root/.ssh/known_hosts: Read-only file system
Connected to 2a00:8a03:190::6:6.
sftp> put /var/tmp/test.txt /home/ftpuser/testfile
Uploading /var/tmp/test.txt to /home/ftpuser/testfile
/var/tmp/test.txt 100% 8192KB 956.2KB/s 00:08
sftp>
Regards,
Bharath
-----Original Message-----
From: Jeffrey Walton <noloader_at_gmail.com>
Sent: Wednesday, July 24, 2024 4:51 PM
To: libcurl development <curl-library_at_lists.haxx.se>
Cc: Bharath Seshagiri (EXT-Nokia) <bharath.seshagiri.ext_at_nokia.com>
Subject: Re: Curl sftp fails with ssh-userauth service error
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On Wed, Jul 24, 2024 at 7:09 AM Bharath Seshagiri (EXT-Nokia) via curl-library <curl-library_at_lists.haxx.se> wrote:
>
> When I try to sftp upload through curl executable I am getting following errors. Keys are configured properly and curl sftp fails with Failure establishing ssh session: -44, Unable to ask for ssh-userauth service error.
>
> Below is the curl version which has been installed.
>
> curl 7.82.0 (aarch64-poky-linux-gnu) libcurl/7.82.0 GnuTLS/3.7.1
> (OpenSSL/3.0.7) zlib/1.2.11 libidn2/2.3.0 libssh2/1.9.0
>
> Release-Date: 2022-03-05
>
> Protocols: dict file ftp ftps gopher gophers http https imap imaps
> pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp
>
> Features: alt-svc AsynchDNS Debug HSTS HTTPS-proxy IDN IPv6 Largefile
> libz MultiSSL NTLM SSL TLS-SRP UnixSockets
>
> root_at_5GSM-SRC234610033:/etc/ssh# curl -vv -u ftpuser: --key
> /etc/sftpkeys/id_dsa --pubkey /etc/sftpkeys/id_dsa.pub -T
> //var/tmp/file.txt
> sftp://ftpuser_at_[2a00:8a03:190::6:6]//home/ftpuser/file.txt -k
>
> * STATE: INIT => CONNECT handle 0xaaaabdfd9920; line 1834 (connection
> #-5000)
>
> * Added connection 0. The cache now contains 1 members
>
> * family0 == v6, family1 == v4
>
> * Trying 2a00:8a03:190::6:6:22...
>
> * STATE: CONNECT => CONNECTING handle 0xaaaabdfd9920; line 1895
> (connection #0)
>
> % Total % Received % Xferd Average Speed Time Time Time Current
>
> Dload Upload Total Spent Left Speed
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Connected to 2a00:8a03:190::6:6 (2a00:8a03:190::6:6) port 22 (#0)
>
> * STATE: CONNECTING => PROTOCONNECT handle 0xaaaabdfd9920; line 2027
> (connection #0)
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_STOP to SSH_INIT
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_INIT to SSH_S_STARTUP
>
> * STATE: PROTOCONNECT => PROTOCONNECTING handle 0xaaaabdfd9920; line
> 2047 (connection #0)
>
> * Failure establishing ssh session: -44, Unable to ask for
> ssh-userauth service
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_S_STARTUP to
> SSH_SESSION_FREE
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_SESSION_FREE to SSH_STOP
>
> * multi_done: status: 2 prem: 1 done: 0
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
>
> * The cache now contains 0 members
>
> * SSH DISCONNECT starts now
>
> * SSH DISCONNECT is done
>
> * Closing connection 0
>
> * Expire cleared (transfer 0xaaaabdfd9920)
>
> curl: (2) Failure establishing ssh session: -44, Unable to ask for
> ssh-userauth service
>
Hmmm...
> --key /etc/sftpkeys/id_dsa
DSA was deprecated in SSH a decade ago. See the changelog for OpenSSH
6.5/6.5p1 (2014-01-30).
You should try a connection to the server using the DSA key and the sftp command. Transfer a dummy file, like:
sftp test.txt ftpuser@\[2a00:8a03:190::6:6\]:ftpuser
Jeff
Date: Wed, 24 Jul 2024 12:33:11 +0000
Hi,
When I tried to do sftp it works fine. Even ssh also works fine. Sftp through curl command it fails.
root_at_5GSM-SRC234610033:/usr/libexec/openssh# sftp -i /etc/sftpkeys/id_dsa ftpuser@[2a00:8a03:190::6:6]
The authenticity of host '2a00:8a03:190::6:6 (2a00:8a03:190::6:6)' can't be established.
ED25519 key fingerprint is SHA256:sMBIAjYp+ocvtilunLSVkRcmMjvw3h7/TaqmnmJS+wM.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Failed to add the host to the list of known hosts (/home/root/.ssh/known_hosts).
hostfile_replace_entries: mkstemp: Read-only file system
update_known_hosts: hostfile_replace_entries failed for /home/root/.ssh/known_hosts: Read-only file system
Connected to 2a00:8a03:190::6:6.
sftp> put /var/tmp/test.txt /home/ftpuser/testfile
Uploading /var/tmp/test.txt to /home/ftpuser/testfile
/var/tmp/test.txt 100% 8192KB 956.2KB/s 00:08
sftp>
Regards,
Bharath
-----Original Message-----
From: Jeffrey Walton <noloader_at_gmail.com>
Sent: Wednesday, July 24, 2024 4:51 PM
To: libcurl development <curl-library_at_lists.haxx.se>
Cc: Bharath Seshagiri (EXT-Nokia) <bharath.seshagiri.ext_at_nokia.com>
Subject: Re: Curl sftp fails with ssh-userauth service error
[You don't often get email from noloader@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
CAUTION: This is an external email. Please be very careful when clicking links or opening attachments. See the URL nok.it/ext for additional information.
On Wed, Jul 24, 2024 at 7:09 AM Bharath Seshagiri (EXT-Nokia) via curl-library <curl-library_at_lists.haxx.se> wrote:
>
> When I try to sftp upload through curl executable I am getting following errors. Keys are configured properly and curl sftp fails with Failure establishing ssh session: -44, Unable to ask for ssh-userauth service error.
>
> Below is the curl version which has been installed.
>
> curl 7.82.0 (aarch64-poky-linux-gnu) libcurl/7.82.0 GnuTLS/3.7.1
> (OpenSSL/3.0.7) zlib/1.2.11 libidn2/2.3.0 libssh2/1.9.0
>
> Release-Date: 2022-03-05
>
> Protocols: dict file ftp ftps gopher gophers http https imap imaps
> pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp
>
> Features: alt-svc AsynchDNS Debug HSTS HTTPS-proxy IDN IPv6 Largefile
> libz MultiSSL NTLM SSL TLS-SRP UnixSockets
>
> root_at_5GSM-SRC234610033:/etc/ssh# curl -vv -u ftpuser: --key
> /etc/sftpkeys/id_dsa --pubkey /etc/sftpkeys/id_dsa.pub -T
> //var/tmp/file.txt
> sftp://ftpuser_at_[2a00:8a03:190::6:6]//home/ftpuser/file.txt -k
>
> * STATE: INIT => CONNECT handle 0xaaaabdfd9920; line 1834 (connection
> #-5000)
>
> * Added connection 0. The cache now contains 1 members
>
> * family0 == v6, family1 == v4
>
> * Trying 2a00:8a03:190::6:6:22...
>
> * STATE: CONNECT => CONNECTING handle 0xaaaabdfd9920; line 1895
> (connection #0)
>
> % Total % Received % Xferd Average Speed Time Time Time Current
>
> Dload Upload Total Spent Left Speed
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Connected to 2a00:8a03:190::6:6 (2a00:8a03:190::6:6) port 22 (#0)
>
> * STATE: CONNECTING => PROTOCONNECT handle 0xaaaabdfd9920; line 2027
> (connection #0)
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_STOP to SSH_INIT
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_INIT to SSH_S_STARTUP
>
> * STATE: PROTOCONNECT => PROTOCONNECTING handle 0xaaaabdfd9920; line
> 2047 (connection #0)
>
> * Failure establishing ssh session: -44, Unable to ask for
> ssh-userauth service
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_S_STARTUP to
> SSH_SESSION_FREE
>
> * SFTP 0xaaaabdfd8bc8 state change from SSH_SESSION_FREE to SSH_STOP
>
> * multi_done: status: 2 prem: 1 done: 0
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
>
> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
>
> * The cache now contains 0 members
>
> * SSH DISCONNECT starts now
>
> * SSH DISCONNECT is done
>
> * Closing connection 0
>
> * Expire cleared (transfer 0xaaaabdfd9920)
>
> curl: (2) Failure establishing ssh session: -44, Unable to ask for
> ssh-userauth service
>
Hmmm...
> --key /etc/sftpkeys/id_dsa
DSA was deprecated in SSH a decade ago. See the changelog for OpenSSH
6.5/6.5p1 (2014-01-30).
You should try a connection to the server using the DSA key and the sftp command. Transfer a dummy file, like:
sftp test.txt ftpuser@\[2a00:8a03:190::6:6\]:ftpuser
Jeff
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