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#include "net_server.h" |
#include "net_server.h" |
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#include "common.h" |
#include "common.h" |
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#include "bbs_main.h" |
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#include "bbs.h" |
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#include "log.h" |
#include "log.h" |
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#include "io.h" |
#include "io.h" |
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#include "init.h" |
#include "init.h" |
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#include "fork.h" |
|
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#include "menu.h" |
#include "menu.h" |
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#include "database.h" |
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#include "login.h" |
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#include "file_loader.h" |
#include "file_loader.h" |
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#include "section_list_loader.h" |
#include "section_list_loader.h" |
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#include <errno.h> |
#include <errno.h> |
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#include <arpa/inet.h> |
#include <arpa/inet.h> |
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#include <netinet/in.h> |
#include <netinet/in.h> |
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#include <systemd/sd-daemon.h> |
#include <systemd/sd-daemon.h> |
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#include <libssh/libssh.h> |
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#include <libssh/server.h> |
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#include <libssh/callbacks.h> |
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|
| 50 |
struct process_sockaddr_t |
struct process_sockaddr_t |
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{ |
{ |
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|
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static PROCESS_SOCKADDR process_sockaddr_pool[MAX_CLIENT_LIMIT]; |
static PROCESS_SOCKADDR process_sockaddr_pool[MAX_CLIENT_LIMIT]; |
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|
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#define SSH_AUTH_MAX_DURATION (60 * 1000) // milliseconds |
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|
| 61 |
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struct ssl_server_cb_data_t |
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{ |
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int tries; |
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int error; |
| 65 |
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}; |
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|
| 67 |
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static int auth_password(ssh_session session, const char *user, |
| 68 |
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const char *password, void *userdata) |
| 69 |
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{ |
| 70 |
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struct ssl_server_cb_data_t *p_data = userdata; |
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int ret; |
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|
| 73 |
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if (strcmp(user, "guest") == 0) |
| 74 |
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{ |
| 75 |
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ret = load_guest_info(); |
| 76 |
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} |
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else |
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{ |
| 79 |
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ret = check_user(user, password); |
| 80 |
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} |
| 81 |
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|
| 82 |
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if (ret == 0) |
| 83 |
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{ |
| 84 |
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return SSH_AUTH_SUCCESS; |
| 85 |
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} |
| 86 |
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|
| 87 |
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if ((++(p_data->tries)) >= BBS_login_retry_times) |
| 88 |
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{ |
| 89 |
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p_data->error = 1; |
| 90 |
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} |
| 91 |
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|
| 92 |
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return SSH_AUTH_DENIED; |
| 93 |
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} |
| 94 |
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| 95 |
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static int pty_request(ssh_session session, ssh_channel channel, const char *term, |
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int x, int y, int px, int py, void *userdata) |
| 97 |
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{ |
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return 0; |
| 99 |
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} |
| 100 |
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|
| 101 |
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static int shell_request(ssh_session session, ssh_channel channel, void *userdata) |
| 102 |
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{ |
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return 0; |
| 104 |
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} |
| 105 |
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|
| 106 |
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static struct ssh_channel_callbacks_struct channel_cb = { |
| 107 |
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.channel_pty_request_function = pty_request, |
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.channel_shell_request_function = shell_request}; |
| 109 |
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|
| 110 |
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static ssh_channel new_session_channel(ssh_session session, void *userdata) |
| 111 |
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{ |
| 112 |
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if (SSH_channel != NULL) |
| 113 |
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{ |
| 114 |
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return NULL; |
| 115 |
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} |
| 116 |
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|
| 117 |
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SSH_channel = ssh_channel_new(session); |
| 118 |
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ssh_callbacks_init(&channel_cb); |
| 119 |
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ssh_set_channel_callbacks(SSH_channel, &channel_cb); |
| 120 |
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|
| 121 |
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return SSH_channel; |
| 122 |
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} |
| 123 |
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|
| 124 |
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static int fork_server(void) |
| 125 |
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{ |
| 126 |
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ssh_event event; |
| 127 |
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int pid; |
| 128 |
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int i; |
| 129 |
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int ret; |
| 130 |
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| 131 |
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struct ssl_server_cb_data_t cb_data = { |
| 132 |
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.tries = 0, |
| 133 |
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.error = 0, |
| 134 |
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}; |
| 135 |
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|
| 136 |
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struct ssh_server_callbacks_struct cb = { |
| 137 |
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.userdata = &cb_data, |
| 138 |
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.auth_password_function = auth_password, |
| 139 |
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.channel_open_request_session_function = new_session_channel, |
| 140 |
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}; |
| 141 |
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|
| 142 |
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pid = fork(); |
| 143 |
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|
| 144 |
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if (pid > 0) // Parent process |
| 145 |
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{ |
| 146 |
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SYS_child_process_count++; |
| 147 |
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log_common("Child process (%d) start\n", pid); |
| 148 |
|
return pid; |
| 149 |
|
} |
| 150 |
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else if (pid < 0) // Error |
| 151 |
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{ |
| 152 |
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log_error("fork() error (%d)\n", errno); |
| 153 |
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return -1; |
| 154 |
|
} |
| 155 |
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|
| 156 |
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// Child process |
| 157 |
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|
| 158 |
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if (close(socket_server[0]) == -1 || close(socket_server[1]) == -1) |
| 159 |
|
{ |
| 160 |
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log_error("Close server socket failed\n"); |
| 161 |
|
} |
| 162 |
|
|
| 163 |
|
SSH_session = ssh_new(); |
| 164 |
|
|
| 165 |
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if (SSH_v2) |
| 166 |
|
{ |
| 167 |
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if (ssh_bind_accept_fd(sshbind, SSH_session, socket_client) != SSH_OK) |
| 168 |
|
{ |
| 169 |
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log_error("ssh_bind_accept_fd() error: %s\n", ssh_get_error(SSH_session)); |
| 170 |
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goto cleanup; |
| 171 |
|
} |
| 172 |
|
|
| 173 |
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ssh_bind_free(sshbind); |
| 174 |
|
|
| 175 |
|
ssh_callbacks_init(&cb); |
| 176 |
|
ssh_set_server_callbacks(SSH_session, &cb); |
| 177 |
|
|
| 178 |
|
if (ssh_handle_key_exchange(SSH_session)) |
| 179 |
|
{ |
| 180 |
|
log_error("ssh_handle_key_exchange() error: %s\n", ssh_get_error(SSH_session)); |
| 181 |
|
goto cleanup; |
| 182 |
|
} |
| 183 |
|
ssh_set_auth_methods(SSH_session, SSH_AUTH_METHOD_PASSWORD); |
| 184 |
|
|
| 185 |
|
event = ssh_event_new(); |
| 186 |
|
ssh_event_add_session(event, SSH_session); |
| 187 |
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|
| 188 |
|
for (i = 0; i < SSH_AUTH_MAX_DURATION && !SYS_server_exit && !cb_data.error && SSH_channel == NULL; i += 100) |
| 189 |
|
{ |
| 190 |
|
ret = ssh_event_dopoll(event, 100); // 0.1 second |
| 191 |
|
if (ret == SSH_ERROR) |
| 192 |
|
{ |
| 193 |
|
log_error("ssh_event_dopoll() error: %s\n", ssh_get_error(SSH_session)); |
| 194 |
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goto cleanup; |
| 195 |
|
} |
| 196 |
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} |
| 197 |
|
|
| 198 |
|
if (cb_data.error) |
| 199 |
|
{ |
| 200 |
|
log_error("SSH auth error, tried %d times\n", cb_data.tries); |
| 201 |
|
goto cleanup; |
| 202 |
|
} |
| 203 |
|
} |
| 204 |
|
|
| 205 |
|
// Redirect Input |
| 206 |
|
close(STDIN_FILENO); |
| 207 |
|
if (dup2(socket_client, STDIN_FILENO) == -1) |
| 208 |
|
{ |
| 209 |
|
log_error("Redirect stdin to client socket failed\n"); |
| 210 |
|
goto cleanup; |
| 211 |
|
} |
| 212 |
|
|
| 213 |
|
// Redirect Output |
| 214 |
|
close(STDOUT_FILENO); |
| 215 |
|
if (dup2(socket_client, STDOUT_FILENO) == -1) |
| 216 |
|
{ |
| 217 |
|
log_error("Redirect stdout to client socket failed\n"); |
| 218 |
|
goto cleanup; |
| 219 |
|
} |
| 220 |
|
|
| 221 |
|
SYS_child_process_count = 0; |
| 222 |
|
|
| 223 |
|
bbs_main(); |
| 224 |
|
|
| 225 |
|
cleanup: |
| 226 |
|
// Child process exit |
| 227 |
|
SYS_server_exit = 1; |
| 228 |
|
|
| 229 |
|
if (SSH_v2) |
| 230 |
|
{ |
| 231 |
|
ssh_channel_free(SSH_channel); |
| 232 |
|
ssh_disconnect(SSH_session); |
| 233 |
|
} |
| 234 |
|
else if (close(socket_client) == -1) |
| 235 |
|
{ |
| 236 |
|
log_error("Close client socket failed\n"); |
| 237 |
|
} |
| 238 |
|
|
| 239 |
|
ssh_free(SSH_session); |
| 240 |
|
ssh_finalize(); |
| 241 |
|
|
| 242 |
|
// Close Input and Output for client |
| 243 |
|
close(STDIN_FILENO); |
| 244 |
|
close(STDOUT_FILENO); |
| 245 |
|
|
| 246 |
|
log_common("Process exit normally\n"); |
| 247 |
|
log_end(); |
| 248 |
|
|
| 249 |
|
_exit(0); |
| 250 |
|
|
| 251 |
|
return 0; |
| 252 |
|
} |
| 253 |
|
|
| 254 |
int net_server(const char *hostaddr, in_port_t port[]) |
int net_server(const char *hostaddr, in_port_t port[]) |
| 255 |
{ |
{ |
| 256 |
unsigned int addrlen; |
unsigned int addrlen; |
| 525 |
|
|
| 526 |
port_client = ntohs(sin.sin_port); |
port_client = ntohs(sin.sin_port); |
| 527 |
|
|
| 528 |
log_common("Accept connection from %s:%d\n", hostaddr_client, port_client); |
log_common("Accept %sconnection from %s:%d\n", (SSH_v2 ? "" : "SSH2 "), hostaddr_client, port_client); |
| 529 |
|
|
| 530 |
if (SYS_child_process_count - 1 < BBS_max_client) |
if (SYS_child_process_count - 1 < BBS_max_client) |
| 531 |
{ |
{ |