Greetings! I am having a little problem, I checked around online, but could not find a reasonable explanation. I am trying to authenticate a session with a linux box. The user password is expired, but the functions "libssh2_userauth_password_ex" or "libssh2_userauth_publickey_fromfile_ex" never fails with LIBSSH2_ERROR_PASSWORD_EXPIRED, following is my code.
void session::login(std::string username, std::string password) { int code; if ((code = libssh2_userauth_password_ex(this->_session, username.c_str(), username.size(), password.c_str(), password.size(), NULL)) != 0) { std::string _errstr; if (code == LIBSSH2_ERROR_ALLOC) _errstr = "An internal memory allocation call failed"; else if (code == LIBSSH2_ERROR_SOCKET_SEND) _errstr = "Unable to send data on socket"; else if (code == LIBSSH2_ERROR_PASSWORD_EXPIRED) _errstr = "The password for the user has expired"; else if (code == LIBSSH2_ERROR_AUTHENTICATION_FAILED) _errstr = "Invalid username/password or public/private key"; else _errstr = "Generic failure"; throw axon::exception(__FILENAME__, __LINE__, __PRETTY_FUNCTION__, "libssh2_userauth_password() - " + _errstr); } } Following is a debug output from terminal 'ssh' command for your reference. FYI long log dump ahead. since the error is not reported at auth stage, getting error at libssh2_sftp_init stage, snd that also unknown error. any help would be appreciated. OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 58: Applying options for * debug2: resolving "localhost" port 22 debug2: ssh_connect_direct: needpriv 0 debug1: Connecting to localhost [::1] port 22. debug1: Connection established. debug1: identity file /home/username/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/username/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.4 debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4 debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000 debug2: fd 3 setting O_NONBLOCK debug1: Authenticating to localhost:22 as 'username' debug3: hostkeys_foreach: reading file "/home/username/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /home/username/.ssh/known_hosts:15 debug3: load_hostkeys: loaded 1 keys from localhost debug3: order_hostkeyalgs: prefer hostkeyalgs: ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp384-cert-...@openssh.com,ecdsa-sha2-nistp521-cert-...@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521 debug3: send packet: type 20 debug1: SSH2_MSG_KEXINIT sent debug3: receive packet: type 20 debug1: SSH2_MSG_KEXINIT received debug2: local client KEXINIT proposal debug2: KEX algorithms: curve25519-sha256,curve25519-sha...@libssh.org,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,ext-info-c debug2: host key algorithms: ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp384-cert-...@openssh.com,ecdsa-sha2-nistp521-cert-...@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519-cert-...@openssh.com,ssh-rsa-cert-...@openssh.com,ssh-dss-cert-...@openssh.com,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ssh-dss debug2: ciphers ctos: chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc debug2: ciphers stoc: chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc debug2: MACs ctos: umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: MACs stoc: umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: compression ctos: none,z...@openssh.com,zlib debug2: compression stoc: none,z...@openssh.com,zlib debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug2: peer server KEXINIT proposal debug2: KEX algorithms: curve25519-sha256,curve25519-sha...@libssh.org,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 debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519 debug2: ciphers ctos: chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc debug2: ciphers stoc: chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc debug2: MACs ctos: umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: MACs stoc: umac-64-...@openssh.com,umac-128-...@openssh.com,hmac-sha2-256-...@openssh.com,hmac-sha2-512-...@openssh.com,hmac-sha1-...@openssh.com,umac...@openssh.com,umac-...@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2: compression ctos: none,z...@openssh.com debug2: compression stoc: none,z...@openssh.com debug2: languages ctos: debug2: languages stoc: debug2: first_kex_follows 0 debug2: reserved 0 debug1: kex: algorithm: curve25519-sha256 debug1: kex: host key algorithm: ecdsa-sha2-nistp256 debug1: kex: server->client cipher: chacha20-poly1...@openssh.com MAC: <implicit> compression: none debug1: kex: client->server cipher: chacha20-poly1...@openssh.com MAC: <implicit> compression: none debug1: kex: curve25519-sha256 need=64 dh_need=64 debug1: kex: curve25519-sha256 need=64 dh_need=64 debug3: send packet: type 30 debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug3: receive packet: type 31 debug1: Server host key: ecdsa-sha2-nistp256 SHA256:BXC23OnWOw8SACSzZLkrtuE7AQAWuscwwG4514kZe/4 debug3: hostkeys_foreach: reading file "/home/username/.ssh/known_hosts" debug3: record_hostkey: found key type ECDSA in file /home/username/.ssh/known_hosts:15 debug3: load_hostkeys: loaded 1 keys from localhost debug1: Host 'localhost' is known and matches the ECDSA host key. debug1: Found key in /home/username/.ssh/known_hosts:15 debug3: send packet: type 21 debug2: set_newkeys: mode 1 debug1: rekey after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug3: receive packet: type 21 debug1: SSH2_MSG_NEWKEYS received debug2: set_newkeys: mode 0 debug1: rekey after 134217728 blocks debug2: key: /home/username/.ssh/id_rsa (0x560879a45e30) debug2: key: /home/username/.ssh/id_dsa ((nil)) debug2: key: /home/username/.ssh/id_ecdsa ((nil)) debug2: key: /home/username/.ssh/id_ed25519 ((nil)) debug3: send packet: type 5 debug3: receive packet: type 7 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512> debug3: receive packet: type 6 debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT received debug3: send packet: type 50 debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic,password debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_lookup gssapi-keyex debug3: remaining preferred: gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_is_enabled gssapi-keyex debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug2: we did not send a packet, disable method debug3: authmethod_lookup gssapi-with-mic debug3: remaining preferred: publickey,keyboard-interactive,password debug3: authmethod_is_enabled gssapi-with-mic debug1: Next authentication method: gssapi-with-mic debug1: Unspecified GSS failure. Minor code may provide more information debug1: Unspecified GSS failure. Minor code may provide more information debug2: we did not send a packet, disable method debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/username/.ssh/id_rsa debug3: send_pubkey_test debug3: send packet: type 50 debug2: we sent a publickey packet, wait for reply debug3: receive packet: type 51 debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Trying private key: /home/username/.ssh/id_dsa debug3: no such identity: /home/username/.ssh/id_dsa: No such file or directory debug1: Trying private key: /home/username/.ssh/id_ecdsa debug3: no such identity: /home/username/.ssh/id_ecdsa: No such file or directory debug1: Trying private key: /home/username/.ssh/id_ed25519 debug3: no such identity: /home/username/.ssh/id_ed25519: No such file or directory debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password username@localhost's password: debug3: send packet: type 50 debug2: we sent a password packet, wait for reply debug3: receive packet: type 52 debug1: Authentication succeeded (password). Authenticated to localhost ([::1]:22). debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug3: send packet: type 90 debug1: Requesting no-more-sessi...@openssh.com debug3: send packet: type 80 debug1: Entering interactive session. debug1: pledge: network debug3: receive packet: type 80 debug1: client_input_global_request: rtype hostkeys...@openssh.com want_reply 0 debug3: receive packet: type 91 debug2: callback start debug2: fd 3 setting TCP_NODELAY debug3: ssh_packet_set_tos: set IPV6_TCLASS 0x10 debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 1 debug3: send packet: type 98 debug1: Sending environment. debug3: Ignored env CPLUS_INCLUDE_PATH debug3: Ignored env NVM_INC debug3: Ignored env MANPATH debug3: Ignored env XDG_SESSION_ID debug3: Ignored env HOSTNAME debug3: Ignored env NVM_CD_FLAGS debug3: Ignored env SHELL debug3: Ignored env TERM debug3: Ignored env HISTSIZE debug3: Ignored env HADOOP_HOME debug3: Ignored env KRB5_KTNAME debug3: Ignored env SSH_CLIENT debug3: Ignored env LIBRARY_PATH debug3: Ignored env OLDPWD debug3: Ignored env SSH_TTY debug3: Ignored env X_SCLS debug3: Ignored env USER debug3: Ignored env http_proxy debug3: Ignored env NVM_DIR debug3: Ignored env PCP_DIR debug3: Ignored env LS_COLORS debug3: Ignored env LD_LIBRARY_PATH debug3: Ignored env ORACLE_SID debug3: Ignored env HADOOP_COMMON_LIB_JARS_DIR debug3: Ignored env ORACLE_BASE debug3: Ignored env HADOOP_TOOLS_LIB_JARS_DIR debug3: Ignored env HADOOP_TOOLS_HOME debug3: Ignored env PATH debug3: Ignored env MAIL debug3: Ignored env HADOOP_COMMON_LIB_NATIVE_DIR debug3: Ignored env KRB5_TRACE debug3: Ignored env C_INCLUDE_PATH debug3: Ignored env PWD debug3: Ignored env HADOOP_COMMON_HOME debug3: Ignored env JAVA_HOME debug1: Sending env LANG = en_US.UTF-8 debug2: channel 0: request env confirm 0 debug3: send packet: type 98 debug3: Ignored env HADOOP_CONF_DIR debug3: Ignored env HADOOP_TOOLS_DIR debug3: Ignored env PS1 debug3: Ignored env HADOOP_OPTS debug3: Ignored env HADOOP_COMMON_DIR debug3: Ignored env https_proxy debug3: Ignored env HISTCONTROL debug3: Ignored env KRB5CCNAME debug3: Ignored env HOME debug3: Ignored env SHLVL debug3: Ignored env KRB5_CLIENT_KTNAME debug3: Ignored env ORACLE_PASSWORD debug3: Ignored env LOGNAME debug3: Ignored env SSH_CONNECTION debug3: Ignored env CLASSPATH debug3: Ignored env LESSOPEN debug3: Ignored env PKG_CONFIG_PATH debug3: Ignored env NVM_BIN debug3: Ignored env FSIZE debug3: Ignored env INFOPATH debug3: Ignored env XDG_RUNTIME_DIR debug3: Ignored env ORACLE_HOME debug3: Ignored env ORACLE_USERNAME debug3: Ignored env _ debug2: channel 0: request shell confirm 1 debug3: send packet: type 98 debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug3: receive packet: type 99 debug2: channel_input_status_confirm: type 99 id 0 debug2: PTY allocation request accepted on channel 0 debug2: channel 0: rcvd adjust 2097152 debug3: receive packet: type 99 debug2: channel_input_status_confirm: type 99 id 0 debug2: shell request accepted on channel 0 You are required to change your password immediately (root enforced) Last login: Thu Sep 7 12:12:41 2023 from localhost WARNING: Your password has expired. You must change your password now and login again! Changing password for user username. Changing password for username. (current) UNIX password: debug3: receive packet: type 2 debug3: Received SSH2_MSG_IGNORE debug3: receive packet: type 96 debug2: channel 0: rcvd eof debug2: channel 0: output open -> drain debug2: channel 0: obuf empty debug2: channel 0: close_write debug2: channel 0: output drain -> closed debug3: receive packet: type 98 debug1: client_input_channel_req: channel 0 rtype exit-signal reply 0 debug3: receive packet: type 98 debug1: client_input_channel_req: channel 0 rtype e...@openssh.com reply 0 debug2: channel 0: rcvd eow debug2: channel 0: close_read debug2: channel 0: input open -> closed debug3: receive packet: type 97 debug2: channel 0: rcvd close debug3: channel 0: will not send data after close debug2: channel 0: almost dead debug2: channel 0: gc: notify user debug2: channel 0: gc: user detached debug2: channel 0: send close debug3: send packet: type 97 debug2: channel 0: is dead debug2: channel 0: garbage collecting debug1: channel 0: free: client-session, nchannels 1 debug3: channel 0: status: The following connections are open: #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cc -1) debug3: send packet: type 1 Connection to localhost closed. Transferred: sent 2952, received 2884 bytes, in 2.1 seconds Bytes per second: sent 1379.7, received 1347.9 debug1: Exit status -1 Regards, Amirul -- libssh2-devel mailing list libssh2-devel@lists.haxx.se https://lists.haxx.se/mailman/listinfo/libssh2-devel