"Couldn't apply options" on a minimal test case console app

[nrathaus]

Running a console application with libssh doesn't ssh_connect, rather returns "Couldn't apply options" - which isn't very informative.

Context

I tried to run the following code:

int main()
{
  ssh_session my_ssh_session = ssh_new();
  if (my_ssh_session == NULL)
    return -1;

  int verbosity = SSH_LOG_PROTOCOL;
  int port = 22;

  int rc = ssh_options_set(my_ssh_session, SSH_OPTIONS_HOST, "192.168.15.1");
  rc = ssh_options_set(my_ssh_session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
  rc = ssh_options_set(my_ssh_session, SSH_OPTIONS_PORT, &port);

  rc = ssh_connect(my_ssh_session);
  if (rc != SSH_OK)
  {
    fprintf(stderr, "Error connecting to localhost: %s\n",
      ssh_get_error(my_ssh_session));
    exit(-1);
  }

  ssh_free(my_ssh_session);

  return 0;
}

But it returns "Couldn't apply options" error to ssh_connect(), all the ssh_options_set work (return a value of 0)

Expected Behavior

Connect to the SSH server

Actual Behavior

Returns an error

Steps to Reproduce

1. Take the above code
2. Compile it as a Console Application, x86, Multibyte (I also tried Unicode)
3. Run

Your Environment

• Version Used: 0.8.7
• Operating System and Version: Windows 10 RS5 (1903)
• Compiler and Version(s): Visual Studio 2015

Possible Fix

:Shrug:

[Sibras]

Have you tried other libssh binaries such as the one from vcpkg?
If its an issue with the binaries provided here then i can help but if its an issue with libssh itself then you should try the libssh upstream developers instead.

[nrathaus]

Hi It's a good idea and apparently from vcpkg it works without any problems (same exact code) I am unable to find out the root cause in ShiftMediaProject that causes it

On Thu, 27 Jun 2019 at 19:18, Matthew Oliver ***@***.***> wrote: Have you tried other libssh binaries such as the one from vcpkg? If its an issue with the binaries provided here then i can help but if its an issue with libssh itself then you should try the libssh upstream developers instead. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1?email_source=notifications&email_token=AAPQE3R567TLAROZJJLFPF3P4TR45A5CNFSM4HZPNGWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODYXUK6A#issuecomment-506414456>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAPQE3UD5363GGP2VSVOSA3P4TR45ANCNFSM4HZPNGWA> .

-- Thanks, Noam Rathaus

[Sibras]

There is new 0.9.0 version of libssh now available. See if that fixes your issues.

[ironxu]

helo The current version 0.10.4 still has this problem

[ironxu]

[2023/02/19 12:41:36.185525, 2] ssh_connect: libssh 0.10.4 (c) 2003-2022 Aris Adamantiadis, Andreas Schneider and libssh contributors. Distributed under the LGPL, please refer to COPYING file for information about your rights, using threading threads_winlock
[2023/02/19 12:41:36.189525, 3] getai: host 192.168.199.130 matches an IP address
[2023/02/19 12:41:36.190525, 2] ssh_socket_connect: Nonblocking connection socket: 664
[2023/02/19 12:41:36.190525, 2] ssh_connect: Socket connecting, now waiting for the callbacks to work
[2023/02/19 12:41:36.190525, 3] ssh_connect: Actual timeout : 10000
[2023/02/19 12:41:36.191525, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLOUT ), out buffer 0
[2023/02/19 12:41:36.191525, 3] ssh_socket_pollcallback: Received POLLOUT in connecting state
[2023/02/19 12:41:36.191525, 1] socket_callback_connected: Socket connection callback: 1 (0)
[2023/02/19 12:41:36.191525, 3] ssh_socket_unbuffered_write: Enabling POLLOUT for socket
[2023/02/19 12:41:36.191525, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLOUT ), out buffer 0
[2023/02/19 12:41:36.207851, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLIN ), out buffer 0
[2023/02/19 12:41:36.207851, 3] callback_receive_banner: Received banner: SSH-2.0-OpenSSH_7.4
[2023/02/19 12:41:36.207851, 2] ssh_client_connection_callback: SSH server banner: SSH-2.0-OpenSSH_7.4
[2023/02/19 12:41:36.207851, 2] ssh_analyze_banner: Analyzing banner: SSH-2.0-OpenSSH_7.4
[2023/02/19 12:41:36.207851, 2] ssh_analyze_banner: We are talking to an OpenSSH server version: 7.4 (70400)
[2023/02/19 12:41:36.237569, 3] ssh_client_select_hostkeys: Order of wanted host keys: "ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256"
[2023/02/19 12:41:36.239581, 1] ssh_known_hosts_read_entries: Failed to open the known_hosts file '/etc/ssh/ssh_known_hosts': No such file or directory
[2023/02/19 12:41:36.239581, 3] ssh_client_select_hostkeys: No key found in known_hosts; changing host key method to "ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256"
[2023/02/19 12:41:36.239581, 4] ssh_list_kex: kex algos: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group18-sha512,diffie-hellman-group16-sha512,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,ext-info-c
[2023/02/19 12:41:36.239581, 4] ssh_list_kex: server host key algo: ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256
[2023/02/19 12:41:36.239581, 4] ssh_list_kex: encryption client->server: [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr,
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: encryption server->client: [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr,
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: mac algo client->server: [email protected],[email protected],hmac-sha2-256,hmac-sha2-512
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: mac algo server->client: [email protected],[email protected],hmac-sha2-256,hmac-sha2-512
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: compression algo client->server: none,[email protected],zlib
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: compression algo server->client: none,[email protected],zlib
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: languages client->server:
[2023/02/19 12:41:36.240581, 4] ssh_list_kex: languages server->client:
[2023/02/19 12:41:36.240581, 3] ssh_socket_unbuffered_write: Enabling POLLOUT for socket
[2023/02/19 12:41:36.240581, 3] packet_send2: packet: wrote [type=20, len=852, padding_size=7, comp=844, payload=844]
[2023/02/19 12:41:36.240581, 3] ssh_send_kex: SSH_MSG_KEXINIT sent
[2023/02/19 12:41:36.240581, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLOUT ), out buffer 0
[2023/02/19 12:41:36.240581, 4] ssh_socket_pollcallback: sending control flow event
[2023/02/19 12:41:36.240581, 4] ssh_packet_socket_controlflow_callback: sending channel_write_wontblock callback
[2023/02/19 12:41:36.241851, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLIN ), out buffer 0
[2023/02/19 12:41:36.241851, 3] ssh_packet_socket_callback: packet: read type 20 [len=1276,padding=10,comp=1265,payload=1265]
[2023/02/19 12:41:36.241851, 3] ssh_packet_process: Dispatching handler for packet type 20
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: kex algos: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: server host key algo: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: encryption client->server: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: encryption server->client: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: mac algo client->server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: mac algo server->client: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: compression algo client->server: none,[email protected]
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: compression algo server->client: none,[email protected]
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: languages client->server:
[2023/02/19 12:41:36.241851, 4] ssh_list_kex: languages server->client:
[2023/02/19 12:41:36.241851, 2] ssh_kex_select_methods: Negotiated curve25519-sha256,ssh-ed25519,[email protected],[email protected],aead-poly1305,aead-poly1305,none,none,,
[2023/02/19 12:41:36.243032, 3] ssh_socket_unbuffered_write: Enabling POLLOUT for socket
[2023/02/19 12:41:36.243032, 3] packet_send2: packet: wrote [type=30, len=44, padding_size=6, comp=37, payload=37]
[2023/02/19 12:41:36.243032, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLOUT ), out buffer 0
[2023/02/19 12:41:36.243032, 4] ssh_socket_pollcallback: sending control flow event
[2023/02/19 12:41:36.243032, 4] ssh_packet_socket_controlflow_callback: sending channel_write_wontblock callback
[2023/02/19 12:41:36.253666, 4] ssh_socket_pollcallback: Poll callback on socket 664 (POLLIN ), out buffer 0
[2023/02/19 12:41:36.253666, 3] ssh_packet_socket_callback: packet: read type 31 [len=188,padding=8,comp=179,payload=179]
[2023/02/19 12:41:36.253666, 3] ssh_packet_process: Dispatching handler for packet type 31
[2023/02/19 12:41:36.253666, 3] ssh_socket_unbuffered_write: Enabling POLLOUT for socket
[2023/02/19 12:41:36.253666, 3] packet_send2: packet: wrote [type=21, len=12, padding_size=10, comp=1, payload=1]
[2023/02/19 12:41:36.255172, 4] ssh_packet_set_newkeys: called, direction = OUT
[2023/02/19 12:41:36.255172, 3] crypt_set_algorithms2: Set output algorithm to [email protected]
[2023/02/19 12:41:36.255172, 3] crypt_set_algorithms2: Set HMAC output algorithm to aead-poly1305
[2023/02/19 12:41:36.255172, 3] crypt_set_algorithms2: Set input algorithm to [email protected]
[2023/02/19 12:41:36.256174, 3] crypt_set_algorithms2: Set HMAC input algorithm to aead-poly1305
[2023/02/19 12:41:36.256174, 2] ssh_init_rekey_state: Set rekey after 134217728 blocks
[2023/02/19 12:41:36.256174, 2] ssh_init_rekey_state: Set rekey after 134217728 blocks
[2023/02/19 12:41:36.256174, 2] ssh_packet_client_curve25519_reply: SSH_MSG_NEWKEYS sent
[2023/02/19 12:41:36.257268, 3] ssh_packet_socket_callback: Processing 100 bytes left in socket buffer
[2023/02/19 12:41:36.257268, 3] ssh_packet_socket_callback: packet: read type 21 [len=12,padding=10,comp=1,payload=1]
[2023/02/19 12:41:36.257268, 3] ssh_packet_process: Dispatching handler for packet type 21
[2023/02/19 12:41:36.257268, 2] ssh_packet_newkeys: Received SSH_MSG_NEWKEYS
[2023/02/19 12:41:36.257268, 4] ssh_pki_signature_verify: Going to verify a ssh-ed25519 type signature
[2023/02/19 12:41:36.260323, 4] pki_verify_data_signature: ED25519 error: Signature invalid
[2023/02/19 12:41:36.260323, 3] ssh_packet_socket_callback: Processing 84 bytes left in socket buffer
[2023/02/19 12:41:36.260323, 3] ssh_packet_socket_callback: Packet: processed 0 bytes
[2023/02/19 12:41:36.260323, 3] ssh_packet_socket_callback: Packet: processed 0 bytes
[2023/02/19 12:41:36.260323, 3] ssh_connect: current state : 9
Error connecting to localhost: