/[LeafOK_CVS]/lbbs/src/test_ssh_server.c
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Revision 1.4 by sysadm, Thu Jun 5 05:24:56 2025 UTC Revision 1.15 by sysadm, Tue Nov 11 00:28:05 2025 UTC
# Line 1  Line 1 
1    /* SPDX-License-Identifier: GPL-3.0-or-later */
2    /*
3     * test_ssh_server
4     *   - tester for network server with SSH support
5     *
6     * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
7     */
8    
9    // This test was written based on libssh example/proxy.c
10    
11    #ifdef HAVE_CONFIG_H
12    #include "config.h"
13    #endif
14    
15  #include "log.h"  #include "log.h"
16  #include <stdio.h>  #include <stdio.h>
17    #include <libssh/callbacks.h>
18  #include <libssh/libssh.h>  #include <libssh/libssh.h>
19  #include <libssh/server.h>  #include <libssh/server.h>
 #include <libssh/callbacks.h>  
20    
21  #ifndef BUF_SIZE  enum test_ssh_server_constant_t
22  #define BUF_SIZE 2048  {
23  #endif          BUF_SIZE = 2048,
24    };
25    
26  #define SSH_HOST_KEYFILE "../conf/ssh_host_rsa_key"  static const char SSH_HOST_RSA_KEYFILE[] = "../conf/ssh_host_rsa_key";
27    
28  #define USER "test"  static const char USER[] = "test";
29  #define PASSWORD "123456"  static const char PASSWORD[] = "123456";
30    
31  static ssh_channel SSH_channel;  static ssh_channel SSH_channel;
32  static int authenticated = 0;  static int authenticated = 0;
# Line 69  struct ssh_channel_callbacks_struct chan Line 84  struct ssh_channel_callbacks_struct chan
84          .channel_pty_request_function = pty_request,          .channel_pty_request_function = pty_request,
85          .channel_shell_request_function = shell_request};          .channel_shell_request_function = shell_request};
86    
87  static ssh_channel new_session_channel(ssh_session session, void *userdata)  static ssh_channel channel_open(ssh_session session, void *userdata)
88  {  {
89          (void)session;          (void)session;
90          (void)userdata;          (void)userdata;
# Line 94  int ssh_server(const char *hostaddr, uns Line 109  int ssh_server(const char *hostaddr, uns
109          struct ssh_server_callbacks_struct cb = {          struct ssh_server_callbacks_struct cb = {
110                  .userdata = NULL,                  .userdata = NULL,
111                  .auth_password_function = auth_password,                  .auth_password_function = auth_password,
112                  .channel_open_request_session_function = new_session_channel};                  .channel_open_request_session_function = channel_open};
113    
114            long int ssh_timeout = 0;
115    
116          char buf[BUF_SIZE];          char buf[BUF_SIZE];
117          char host[128] = "";          char host[128] = "";
118          int i, r;          int i, r;
119    
120          int ssh_log_level = SSH_LOG_WARNING;          int ssh_log_level = SSH_LOG_PROTOCOL;
121    
122          ssh_init();          ssh_init();
123    
# Line 108  int ssh_server(const char *hostaddr, uns Line 125  int ssh_server(const char *hostaddr, uns
125    
126          if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDADDR, hostaddr) < 0 ||          if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDADDR, hostaddr) < 0 ||
127                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDPORT, &port) < 0 ||                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDPORT, &port) < 0 ||
128                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_KEYFILE) < 0 ||                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_RSA_KEYFILE) < 0 ||
129                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY_ALGORITHMS, "ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256") < 0 ||
130                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_PUBKEY_ACCEPTED_KEY_TYPES, "ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256") < 0 ||
131                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_KEY_EXCHANGE, "curve25519-sha256@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-group14-sha256,diffie-hellman-group14-sha1") < 0 ||
132                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HMAC_C_S, "umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1") < 0 ||
133                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HMAC_S_C, "umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1") < 0 ||
134                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_CIPHERS_C_S, "chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com") < 0 ||
135                    ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_CIPHERS_S_C, "chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com") < 0 ||
136                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)                  ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
137          {          {
138                  log_error("Error setting SSH bind options: %s\n", ssh_get_error(sshbind));                  log_error("Error setting SSH bind options: %s\n", ssh_get_error(sshbind));
# Line 138  int ssh_server(const char *hostaddr, uns Line 162  int ssh_server(const char *hostaddr, uns
162                                  ssh_callbacks_init(&cb);                                  ssh_callbacks_init(&cb);
163                                  ssh_set_server_callbacks(session, &cb);                                  ssh_set_server_callbacks(session, &cb);
164    
165                                    ssh_timeout = 60; // second
166                                    if (ssh_options_set(session, SSH_OPTIONS_TIMEOUT, &ssh_timeout) < 0)
167                                    {
168                                            log_error("Error setting SSH options: %s\n", ssh_get_error(session));
169                                            ssh_disconnect(session);
170                                            _exit(1);
171                                    }
172    
173                                  if (ssh_handle_key_exchange(session))                                  if (ssh_handle_key_exchange(session))
174                                  {                                  {
175                                          log_error("ssh_handle_key_exchange: %s\n", ssh_get_error(session));                                          log_error("ssh_handle_key_exchange: %s\n", ssh_get_error(session));
176                                          return 1;                                          ssh_disconnect(session);
177                                            _exit(1);
178                                  }                                  }
179                                  ssh_set_auth_methods(session, SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_GSSAPI_MIC);                                  ssh_set_auth_methods(session, SSH_AUTH_METHOD_PASSWORD | SSH_AUTH_METHOD_GSSAPI_MIC);
180    
# Line 171  int ssh_server(const char *hostaddr, uns Line 204  int ssh_server(const char *hostaddr, uns
204                                          log_common("Authenticated and got a channel\n");                                          log_common("Authenticated and got a channel\n");
205                                  }                                  }
206    
207                                    ssh_timeout = 0;
208                                    if (ssh_options_set(session, SSH_OPTIONS_TIMEOUT, &ssh_timeout) < 0)
209                                    {
210                                            log_error("Error setting SSH options: %s\n", ssh_get_error(session));
211                                            ssh_disconnect(session);
212                                            _exit(1);
213                                    }
214    
215                                  snprintf(buf, sizeof(buf), "Hello, welcome to the Sample SSH proxy.\r\nPlease select your destination: ");                                  snprintf(buf, sizeof(buf), "Hello, welcome to the Sample SSH proxy.\r\nPlease select your destination: ");
216                                  ssh_channel_write(SSH_channel, buf, (uint32_t)strlen(buf));                                  ssh_channel_write(SSH_channel, buf, (uint32_t)strlen(buf));
217                                  do                                  do

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