/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.97 - (show annotations)
Thu Dec 18 07:58:23 2025 UTC (2 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.96: +185 -85 lines
Content type: text/x-csrc
Refine and bug fix

1 /* SPDX-License-Identifier: GPL-3.0-or-later */
2 /*
3 * bbs_net
4 * - user interactive feature of site shuttle
5 *
6 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 */
8
9 #ifdef HAVE_CONFIG_H
10 #include "config.h"
11 #endif
12
13 #include "bbs.h"
14 #include "bbs_net.h"
15 #include "common.h"
16 #include "io.h"
17 #include "log.h"
18 #include "login.h"
19 #include "menu.h"
20 #include "screen.h"
21 #include "str_process.h"
22 #include <errno.h>
23 #include <fcntl.h>
24 #include <netdb.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <time.h>
30 #include <unistd.h>
31 #include <arpa/inet.h>
32 #include <ctype.h>
33 #include <libssh/libssh.h>
34 #include <libssh/server.h>
35 #include <libssh/callbacks.h>
36 #include <netinet/in.h>
37 #include <netinet/ip.h>
38 #include <sys/select.h>
39 #include <sys/ioctl.h>
40 #include <sys/socket.h>
41
42 #ifdef HAVE_SYS_EPOLL_H
43 #include <sys/epoll.h>
44 #else
45 #include <poll.h>
46 #endif
47
48 static const char MENU_CONF_DELIM[] = " \t\r\n";
49
50 enum _bbs_net_constant_t
51 {
52 MAXSTATION = 26 * 2,
53 STATION_PER_LINE = 4,
54 USERNAME_MAX_LEN = 20,
55 PASSWORD_MAX_LEN = 20,
56 REMOTE_CONNECT_TIMEOUT = 10, // seconds
57 SSH_CONNECT_TIMEOUT = 5, // seconds
58 PROGRESS_BAR_LEN = 30,
59 };
60
61 struct _bbsnet_conf
62 {
63 char org_name[40];
64 char site_name[40];
65 char host_name[IP_ADDR_LEN];
66 char port[6];
67 int8_t use_ssh;
68 char charset[CHARSET_MAX_LEN + 1];
69 } bbsnet_conf[MAXSTATION];
70
71 static MENU_SET bbsnet_menu;
72
73 static void unload_bbsnet_conf(void);
74
75 static int load_bbsnet_conf(const char *file_config)
76 {
77 FILE *fp;
78 MENU *p_menu;
79 MENU_ITEM *p_menu_item;
80 MENU_ITEM_ID menu_item_id;
81 char line[LINE_BUFFER_LEN], *t1, *t2, *t3, *t4, *t5, *t6, *saveptr;
82 long port;
83 char *endptr;
84
85 unload_bbsnet_conf();
86
87 bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU));
88 if (bbsnet_menu.p_menu_pool == NULL)
89 {
90 log_error("calloc(p_menu_pool) error\n");
91 return -1;
92 }
93 bbsnet_menu.menu_count = 1;
94
95 bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM));
96 if (bbsnet_menu.p_menu_item_pool == NULL)
97 {
98 log_error("calloc(p_menu_item_pool) error\n");
99 unload_bbsnet_conf();
100 return -1;
101 }
102 bbsnet_menu.menu_item_count = MAXSTATION;
103
104 p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
105
106 strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
107 p_menu->name[sizeof(p_menu->name) - 1] = '\0';
108 p_menu->title.show = 0;
109 p_menu->screen_show = 0;
110
111 fp = fopen(file_config, "r");
112 if (fp == NULL)
113 {
114 unload_bbsnet_conf();
115 return -2;
116 }
117
118 menu_item_id = 0;
119 while (fgets(line, sizeof(line), fp) && menu_item_id < MAXSTATION)
120 {
121 t1 = strtok_r(line, MENU_CONF_DELIM, &saveptr);
122 t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
123 t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
124 t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
125 t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
126 t6 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
127
128 if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL ||
129 t5 == NULL || t6 == NULL || t1[0] == '#')
130 {
131 continue;
132 }
133
134 strncpy(bbsnet_conf[menu_item_id].site_name, t2, sizeof(bbsnet_conf[menu_item_id].site_name) - 1);
135 bbsnet_conf[menu_item_id].site_name[sizeof(bbsnet_conf[menu_item_id].site_name) - 1] = '\0';
136 strncpy(bbsnet_conf[menu_item_id].org_name, t1, sizeof(bbsnet_conf[menu_item_id].org_name) - 1);
137 bbsnet_conf[menu_item_id].org_name[sizeof(bbsnet_conf[menu_item_id].org_name) - 1] = '\0';
138 strncpy(bbsnet_conf[menu_item_id].host_name, t3, sizeof(bbsnet_conf[menu_item_id].host_name) - 1);
139 bbsnet_conf[menu_item_id].host_name[sizeof(bbsnet_conf[menu_item_id].host_name) - 1] = '\0';
140 port = strtol(t4, &endptr, 10);
141 if (*endptr != '\0' || port <= 0 || port > 65535)
142 {
143 log_error("Invalid port value %d of menu item %d\n", port, menu_item_id);
144 fclose(fp);
145 unload_bbsnet_conf();
146 return -3;
147 }
148 strncpy(bbsnet_conf[menu_item_id].port, t4, sizeof(bbsnet_conf[menu_item_id].port) - 1);
149 bbsnet_conf[menu_item_id].port[sizeof(bbsnet_conf[menu_item_id].port) - 1] = '\0';
150 bbsnet_conf[menu_item_id].use_ssh = (toupper(t5[0]) == 'Y');
151 strncpy(bbsnet_conf[menu_item_id].charset, t6, sizeof(bbsnet_conf[menu_item_id].charset) - 1);
152 bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0';
153
154 p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id);
155 if (p_menu_item == NULL)
156 {
157 log_error("get_menu_item_by_id(%d) return NULL pointer\n", menu_item_id);
158 fclose(fp);
159 unload_bbsnet_conf();
160 return -3;
161 }
162
163 p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE);
164 p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20);
165 snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id);
166 p_menu_item->submenu = 0;
167 p_menu_item->priv = 0;
168 p_menu_item->level = 0;
169 p_menu_item->name[0] =
170 (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id - MAXSTATION / 2);
171 p_menu_item->name[1] = '\0';
172 snprintf(p_menu_item->text, sizeof(p_menu_item->text), "\033[1;36m%c.\033[m %s",
173 p_menu_item->name[0], bbsnet_conf[menu_item_id].site_name);
174
175 p_menu->items[p_menu->item_count] = menu_item_id;
176 p_menu->item_count++;
177 menu_item_id++;
178 }
179
180 bbsnet_menu.menu_item_count = (int16_t)menu_item_id;
181 bbsnet_menu.menu_id_path[0] = 0;
182 bbsnet_menu.menu_item_pos[0] = 0;
183 bbsnet_menu.choose_step = 0;
184
185 fclose(fp);
186
187 return 0;
188 }
189
190 static void unload_bbsnet_conf(void)
191 {
192 bbsnet_menu.menu_count = 0;
193 bbsnet_menu.menu_item_count = 0;
194
195 if (bbsnet_menu.p_menu_pool)
196 {
197 free(bbsnet_menu.p_menu_pool);
198 bbsnet_menu.p_menu_pool = NULL;
199 }
200
201 if (bbsnet_menu.p_menu_item_pool)
202 {
203 free(bbsnet_menu.p_menu_item_pool);
204 bbsnet_menu.p_menu_item_pool = NULL;
205 }
206 }
207
208 static void progress_bar(int percent, int len)
209 {
210 char line[LINE_BUFFER_LEN];
211 char buf[LINE_BUFFER_LEN];
212 char buf2[LINE_BUFFER_LEN];
213 int pos;
214
215 if (len <= 0)
216 {
217 len = 1;
218 }
219 else if (len > LINE_BUFFER_LEN)
220 {
221 len = LINE_BUFFER_LEN - 1;
222 }
223 if (percent < 0)
224 {
225 percent = 0;
226 }
227 else if (percent > 100)
228 {
229 percent = 100;
230 }
231
232 pos = len * percent / 100;
233
234 line[0] = ' ';
235 for (int i = 1; i <= len; i++)
236 {
237 line[i] = '-';
238 }
239 line[len + 1] = ' ';
240 line[len + 2] = '\0';
241
242 snprintf(buf, sizeof(buf), "%*s%3d%%%*s",
243 (len - 4) / 2, "", percent, (len - 4 + 1) / 2, "");
244 memcpy(buf2, buf, (size_t)pos);
245 buf2[pos] = '\0';
246
247 moveto(4, 1);
248 prints("%s\r\n", line);
249 prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + pos);
250 prints("%s\r\n", line);
251 iflush();
252 }
253
254 static int bbsnet_connect(int n)
255 {
256 int sock = -1;
257 int ret = 0;
258 int loop;
259 int error;
260 int sock_connected = 0;
261 int flags_sock = -1;
262 int flags_stdin = -1;
263 int flags_stdout = -1;
264 struct sockaddr_in sin;
265 char input_buf[LINE_BUFFER_LEN];
266 char output_buf[LINE_BUFFER_LEN];
267 int input_buf_len = 0;
268 int output_buf_len = 0;
269 int input_buf_offset = 0;
270 int output_buf_offset = 0;
271 char input_conv[LINE_BUFFER_LEN * 2];
272 char output_conv[LINE_BUFFER_LEN * 2];
273 int input_conv_len = 0;
274 int output_conv_len = 0;
275 int input_conv_offset = 0;
276 int output_conv_offset = 0;
277 iconv_t input_cd = (iconv_t)(-1);
278 iconv_t output_cd = (iconv_t)(-1);
279 char tocode[CHARSET_MAX_LEN + 20];
280
281 #ifdef HAVE_SYS_EPOLL_H
282 struct epoll_event ev, events[MAX_EVENTS];
283 int epollfd = -1;
284 #else
285 struct pollfd pfds[3];
286 #endif
287
288 int nfds;
289 int stdin_read_wait = 0;
290 int stdout_write_wait = 0;
291 int sock_read_wait = 0;
292 int sock_write_wait = 0;
293 struct addrinfo hints, *res = NULL;
294 int tos;
295 char remote_addr[INET_ADDRSTRLEN];
296 int remote_port;
297 char local_addr[INET_ADDRSTRLEN];
298 int local_port;
299 socklen_t sock_len;
300 time_t t_begin, t_used;
301 struct timespec ts_begin, ts_now;
302 int progress, progress_last;
303 int ch;
304 char remote_user[USERNAME_MAX_LEN + 1];
305 char remote_pass[PASSWORD_MAX_LEN + 1];
306 ssh_session outbound_session = NULL;
307 ssh_channel outbound_channel = NULL;
308 int ssh_process_config = 0;
309 int ssh_log_level = SSH_LOG_NOLOG;
310
311 if (user_online_update("BBS_NET") < 0)
312 {
313 log_error("user_online_update(BBS_NET) error\n");
314 }
315
316 if (bbsnet_conf[n].use_ssh)
317 {
318 clearscr();
319
320 if (!SSH_v2)
321 {
322 moveto(1, 1);
323 prints("只有在以SSH方式登陆本站时,才能使用SSH站点穿梭。");
324 press_any_key();
325 return 0;
326 }
327
328 moveto(1, 1);
329 prints("通过SSH方式连接[%s]...", bbsnet_conf[n].site_name);
330 moveto(2, 1);
331 prints("请输入用户名: ");
332 iflush();
333 if (str_input(remote_user, sizeof(remote_user), DOECHO) < 0)
334 {
335 return -1;
336 }
337 if (remote_user[0] == '\0')
338 {
339 return 0;
340 }
341
342 moveto(3, 1);
343 prints("请输入密码: ");
344 iflush();
345 if (str_input(remote_pass, sizeof(remote_pass), NOECHO) < 0)
346 {
347 return -1;
348 }
349 if (remote_pass[0] == '\0')
350 {
351 return 0;
352 }
353 }
354
355 clearscr();
356
357 moveto(1, 1);
358 prints("\033[1;32m正在测试往 %s (%s) 的连接,请稍候... \033[m\r\n",
359 bbsnet_conf[n].site_name, bbsnet_conf[n].host_name);
360 iflush();
361
362 memset(&hints, 0, sizeof(hints));
363 hints.ai_family = AF_INET;
364 hints.ai_socktype = SOCK_STREAM;
365 hints.ai_protocol = IPPROTO_TCP;
366
367 if ((ret = getaddrinfo(BBS_address, NULL, &hints, &res)) != 0)
368 {
369 log_error("getaddrinfo() error (%d): %s\n", ret, gai_strerror(ret));
370 ret = -1;
371 goto cleanup;
372 }
373
374 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), local_addr, sizeof(local_addr)) == NULL)
375 {
376 log_error("inet_ntop() error (%d)\n", errno);
377 ret = -1;
378 goto cleanup;
379 }
380 local_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
381
382 sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
383 if (sock < 0)
384 {
385 log_error("socket() error (%d)\n", errno);
386 ret = -1;
387 goto cleanup;
388 }
389
390 if (bind(sock, res->ai_addr, res->ai_addrlen) < 0)
391 {
392 log_error("bind(%s:%u) error (%d)\n", local_addr, local_port, errno);
393 ret = -1;
394 goto cleanup;
395 }
396
397 freeaddrinfo(res);
398 res = NULL;
399
400 memset(&hints, 0, sizeof(hints));
401 hints.ai_family = AF_INET;
402 hints.ai_flags = AI_NUMERICSERV;
403 hints.ai_socktype = SOCK_STREAM;
404 hints.ai_protocol = IPPROTO_TCP;
405
406 if ((ret = getaddrinfo(bbsnet_conf[n].host_name, bbsnet_conf[n].port, &hints, &res)) != 0)
407 {
408 log_error("getaddrinfo() error (%d): %s\n", ret, gai_strerror(ret));
409 prints("\033[1;31m查找主机名失败!\033[m\r\n");
410 press_any_key();
411 ret = -1;
412 goto cleanup;
413 }
414
415 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), remote_addr, sizeof(remote_addr)) == NULL)
416 {
417 log_error("inet_ntop() error (%d)\n", errno);
418 ret = -1;
419 goto cleanup;
420 }
421 remote_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
422
423 // Set socket as non-blocking
424 if ((flags_sock = fcntl(sock, F_GETFL, 0)) == -1)
425 {
426 log_error("fcntl(F_GETFL) error (%d)\n", errno);
427 ret = -1;
428 goto cleanup;
429 }
430 if ((fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK)) == -1)
431 {
432 log_error("fcntl(F_SETFL) error (%d)\n", errno);
433 ret = -1;
434 goto cleanup;
435 }
436
437 // Set STDIN/STDOUT as non-blocking
438 if ((flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0)) == -1)
439 {
440 log_error("fcntl(F_GETFL) error (%d)\n", errno);
441 ret = -1;
442 goto cleanup;
443 }
444 if ((flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0)) == -1)
445 {
446 log_error("fcntl(F_GETFL) error (%d)\n", errno);
447 ret = -1;
448 goto cleanup;
449 }
450 if ((fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK)) == -1)
451 {
452 log_error("fcntl(F_SETFL) error (%d)\n", errno);
453 ret = -1;
454 goto cleanup;
455 }
456 if ((fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK)) == -1)
457 {
458 log_error("fcntl(F_SETFL) error (%d)\n", errno);
459 ret = -1;
460 goto cleanup;
461 }
462
463 #ifdef HAVE_SYS_EPOLL_H
464 epollfd = epoll_create1(0);
465 if (epollfd < 0)
466 {
467 log_error("epoll_create1() error (%d)\n", errno);
468 ret = -1;
469 goto cleanup;
470 }
471
472 ev.events = EPOLLOUT | EPOLLET;
473 ev.data.fd = sock;
474 if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
475 {
476 log_error("epoll_ctl(socket) error (%d)\n", errno);
477 ret = -1;
478 goto cleanup;
479 }
480
481 ev.events = EPOLLIN | EPOLLET;
482 ev.data.fd = STDIN_FILENO;
483 if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
484 {
485 log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
486 ret = -1;
487 goto cleanup;
488 }
489 #endif
490
491 while (!SYS_server_exit)
492 {
493 if ((ret = connect(sock, res->ai_addr, res->ai_addrlen)) == 0)
494 {
495 sock_connected = 1;
496 break;
497 }
498 else if (ret < 0)
499 {
500 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
501 {
502 // Use select / epoll to check writability of the socket,
503 // then use getsockopt to check the status of the socket.
504 // See man connect(2)
505 break;
506 }
507 else if (errno == EINTR)
508 {
509 continue;
510 }
511 else
512 {
513 log_error("connect(socket) error (%d)\n", errno);
514 prints("\033[1;31m连接失败!\033[m\r\n");
515 press_any_key();
516 ret = -1;
517 goto cleanup;
518 }
519 }
520 }
521
522 progress = progress_last = 0;
523 prints("\033[1;32m连接进行中,按\033[1;33mCtrl+C\033[1;32m中断。\033[m\r\n");
524 progress_bar(0, PROGRESS_BAR_LEN);
525
526 if (clock_gettime(CLOCK_REALTIME, &ts_begin) == -1)
527 {
528 log_error("clock_gettime() error (%d)\n", errno);
529 ret = -1;
530 goto cleanup;
531 }
532 ts_now = ts_begin;
533
534 while ((ts_now.tv_sec - ts_begin.tv_sec) +
535 (ts_now.tv_nsec - ts_begin.tv_nsec) / 1000 / 1000 / 1000 <
536 REMOTE_CONNECT_TIMEOUT &&
537 !sock_connected && !SYS_server_exit)
538 {
539 #ifdef HAVE_SYS_EPOLL_H
540 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
541 ret = nfds;
542 #else
543 pfds[0].fd = sock;
544 pfds[0].events = POLLOUT;
545 pfds[1].fd = STDIN_FILENO;
546 pfds[1].events = POLLIN;
547 nfds = 2;
548 ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
549 #endif
550
551 if (ret < 0)
552 {
553 if (errno != EINTR)
554 {
555 #ifdef HAVE_SYS_EPOLL_H
556 log_error("epoll_wait() error (%d)\n", errno);
557 #else
558 log_error("poll() error (%d)\n", errno);
559 #endif
560 break;
561 }
562 }
563 else if (ret == 0) // timeout
564 {
565 if (clock_gettime(CLOCK_REALTIME, &ts_now) == -1)
566 {
567 log_error("clock_gettime() error (%d)\n", errno);
568 ret = -1;
569 goto cleanup;
570 }
571
572 progress = (int)((ts_now.tv_sec - ts_begin.tv_sec) * 1000 +
573 (ts_now.tv_nsec - ts_begin.tv_nsec) / 1000 / 1000) /
574 REMOTE_CONNECT_TIMEOUT / 10 +
575 1;
576
577 if (progress > progress_last)
578 {
579 progress_last = progress;
580 progress_bar(progress, PROGRESS_BAR_LEN);
581 }
582 }
583 else // ret > 0
584 {
585 for (int i = 0; i < nfds; i++)
586 {
587 #ifdef HAVE_SYS_EPOLL_H
588 if (events[i].data.fd == sock)
589 #else
590 if (pfds[i].fd == sock && (pfds[i].revents & POLLOUT))
591 #endif
592 {
593 socklen_t len = sizeof(error);
594 if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &len) < 0)
595 {
596 log_error("getsockopt() error (%d) !\n", errno);
597 ret = -1;
598 goto cleanup;
599 }
600 if (error == 0)
601 {
602 sock_connected = 1;
603 break;
604 }
605 }
606 #ifdef HAVE_SYS_EPOLL_H
607 else if (events[i].data.fd == STDIN_FILENO)
608 #else
609 else if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
610 #endif
611 {
612 do
613 {
614 ch = igetch(0);
615 } while (ch == 0);
616 if (ch == Ctrl('C') || ch == KEY_ESC)
617 {
618 ret = 0;
619 goto cleanup;
620 }
621 }
622 }
623 }
624 }
625 if (SYS_server_exit)
626 {
627 ret = 0;
628 goto cleanup;
629 }
630 if (!sock_connected)
631 {
632 progress_bar(100, PROGRESS_BAR_LEN);
633 prints("\033[1;31m连接失败!\033[m\r\n");
634 press_any_key();
635 ret = -1;
636 goto cleanup;
637 }
638
639 tos = IPTOS_LOWDELAY;
640 if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
641 {
642 log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
643 }
644
645 sock_len = sizeof(sin);
646 if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
647 {
648 log_error("getsockname() error: %d", errno);
649 ret = -1;
650 goto cleanup;
651 }
652
653 if (inet_ntop(AF_INET, &(sin.sin_addr), local_addr, sizeof(local_addr)) == NULL)
654 {
655 log_error("inet_ntop() error (%d)\n", errno);
656 ret = -1;
657 goto cleanup;
658 }
659 local_port = ntohs(sin.sin_port);
660
661 if (bbsnet_conf[n].use_ssh)
662 {
663 outbound_session = ssh_new();
664 if (outbound_session == NULL)
665 {
666 log_error("ssh_new() error\n");
667 ret = -1;
668 goto cleanup;
669 }
670
671 if (ssh_options_set(outbound_session, SSH_OPTIONS_FD, &sock) < 0 ||
672 ssh_options_set(outbound_session, SSH_OPTIONS_PROCESS_CONFIG, &ssh_process_config) < 0 ||
673 ssh_options_set(outbound_session, SSH_OPTIONS_KNOWNHOSTS, SSH_KNOWN_HOSTS_FILE) < 0 ||
674 ssh_options_set(outbound_session, SSH_OPTIONS_HOST, bbsnet_conf[n].host_name) < 0 ||
675 ssh_options_set(outbound_session, SSH_OPTIONS_USER, remote_user) < 0 ||
676 ssh_options_set(outbound_session, SSH_OPTIONS_HOSTKEYS, "+ssh-ed25519,ecdsa-sha2-nistp256,ssh-rsa") < 0 ||
677 ssh_options_set(outbound_session, SSH_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
678 {
679 log_error("Error setting SSH options: %s\n", ssh_get_error(outbound_session));
680 ret = -1;
681 goto cleanup;
682 }
683
684 ssh_set_blocking(outbound_session, 0);
685
686 t_begin = time(NULL);
687 ret = SSH_ERROR;
688 while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
689 {
690 ret = ssh_connect(outbound_session);
691 if (ret == SSH_OK)
692 {
693 break;
694 }
695 else if (ret == SSH_AGAIN)
696 {
697 // log_debug("ssh_connect() error: SSH_AGAIN\n");
698 }
699 else // if (ret == SSH_ERROR)
700 {
701 log_error("ssh_connect() error: SSH_ERROR\n");
702 ret = -1;
703 goto cleanup;
704 }
705 }
706 if (ret != SSH_OK)
707 {
708 prints("\033[1;31m连接超时!\033[m\r\n");
709 press_any_key();
710 ret = -1;
711 goto cleanup;
712 }
713
714 ret = ssh_session_is_known_server(outbound_session);
715 switch (ret)
716 {
717 case SSH_KNOWN_HOSTS_NOT_FOUND:
718 case SSH_KNOWN_HOSTS_UNKNOWN:
719 if (ssh_session_update_known_hosts(outbound_session) != SSH_OK)
720 {
721 log_error("ssh_session_update_known_hosts(%s) error\n", bbsnet_conf[n].host_name);
722 prints("\033[1;31m无法添加服务器证书\033[m\r\n");
723 press_any_key();
724 ret = -1;
725 goto cleanup;
726 }
727 log_common("SSH key of (%s) is added into %s\n", bbsnet_conf[n].host_name, SSH_KNOWN_HOSTS_FILE);
728 case SSH_KNOWN_HOSTS_OK:
729 break;
730 case SSH_KNOWN_HOSTS_CHANGED:
731 case SSH_KNOWN_HOSTS_OTHER:
732 log_error("ssh_session_is_known_server(%s) error: %d\n", bbsnet_conf[n].host_name, ret);
733 prints("\033[1;31m服务器证书已变更\033[m\r\n");
734 press_any_key();
735 ret = -1;
736 goto cleanup;
737 }
738
739 ret = SSH_AUTH_ERROR;
740 while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
741 {
742 ret = ssh_userauth_password(outbound_session, NULL, remote_pass);
743 if (ret == SSH_AUTH_SUCCESS)
744 {
745 break;
746 }
747 else if (ret == SSH_AUTH_AGAIN)
748 {
749 // log_debug("ssh_userauth_password() error: SSH_AUTH_AGAIN\n");
750 }
751 else if (ret == SSH_AUTH_ERROR)
752 {
753 log_error("ssh_userauth_password() error: SSH_AUTH_ERROR\n");
754 ret = -1;
755 goto cleanup;
756 }
757 else // if (ret == SSH_AUTH_DENIED)
758 {
759 log_error("ssh_userauth_password() error: SSH_AUTH_DENIED\n");
760 prints("\033[1;31m身份验证失败!\033[m\r\n");
761 press_any_key();
762 ret = -1;
763 goto cleanup;
764 }
765 }
766 if (ret != SSH_AUTH_SUCCESS)
767 {
768 prints("\033[1;31m连接超时!\033[m\r\n");
769 press_any_key();
770 ret = -1;
771 goto cleanup;
772 }
773
774 outbound_channel = ssh_channel_new(outbound_session);
775 if (outbound_channel == NULL)
776 {
777 log_error("ssh_channel_new() error\n");
778 ret = -1;
779 goto cleanup;
780 }
781
782 ret = SSH_ERROR;
783 while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
784 {
785 ret = ssh_channel_open_session(outbound_channel);
786 if (ret == SSH_OK)
787 {
788 break;
789 }
790 else if (ret == SSH_AGAIN)
791 {
792 // log_debug("ssh_channel_open_session() error: SSH_AGAIN\n");
793 }
794 else // if (ret == SSH_ERROR)
795 {
796 log_error("ssh_channel_open_session() error: SSH_ERROR\n");
797 ret = -1;
798 goto cleanup;
799 }
800 }
801 if (ret != SSH_OK)
802 {
803 prints("\033[1;31m连接超时!\033[m\r\n");
804 press_any_key();
805 ret = -1;
806 goto cleanup;
807 }
808
809 ret = SSH_ERROR;
810 while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
811 {
812 ret = ssh_channel_request_pty(outbound_channel);
813 if (ret == SSH_OK)
814 {
815 break;
816 }
817 else if (ret == SSH_AGAIN)
818 {
819 // log_debug("ssh_channel_request_pty() error: SSH_AGAIN\n");
820 }
821 else // if (ret == SSH_ERROR)
822 {
823 log_error("ssh_channel_request_pty() error: SSH_ERROR\n");
824 ret = -1;
825 goto cleanup;
826 }
827 }
828 if (ret != SSH_OK)
829 {
830 prints("\033[1;31m连接超时!\033[m\r\n");
831 press_any_key();
832 ret = -1;
833 goto cleanup;
834 }
835
836 ret = SSH_ERROR;
837 while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
838 {
839 ret = ssh_channel_request_shell(outbound_channel);
840 if (ret == SSH_OK)
841 {
842 break;
843 }
844 else if (ret == SSH_AGAIN)
845 {
846 // log_debug("ssh_channel_request_shell() error: SSH_AGAIN\n");
847 }
848 else // if (ret == SSH_ERROR)
849 {
850 log_error("ssh_channel_request_shell() error: SSH_ERROR\n");
851 ret = -1;
852 goto cleanup;
853 }
854 }
855 if (ret != SSH_OK)
856 {
857 prints("\033[1;31m连接超时!\033[m\r\n");
858 press_any_key();
859 ret = -1;
860 goto cleanup;
861 }
862 }
863
864 prints("\033[1;31m连接成功!\033[m\r\n");
865 iflush();
866 log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n",
867 remote_addr, remote_port, local_addr, local_port, BBS_username);
868
869 snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset,
870 (strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE"));
871 input_cd = iconv_open(tocode, stdio_charset);
872 if (input_cd == (iconv_t)(-1))
873 {
874 log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno);
875 ret = -1;
876 goto cleanup;
877 }
878
879 snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset,
880 (strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT"));
881 output_cd = iconv_open(tocode, bbsnet_conf[n].charset);
882 if (output_cd == (iconv_t)(-1))
883 {
884 log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, tocode, errno);
885 ret = -1;
886 goto cleanup;
887 }
888
889 #ifdef HAVE_SYS_EPOLL_H
890 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
891 ev.data.fd = sock;
892 if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
893 {
894 log_error("epoll_ctl(socket) error (%d)\n", errno);
895 ret = -1;
896 goto cleanup;
897 }
898
899 ev.events = EPOLLOUT | EPOLLET;
900 ev.data.fd = STDOUT_FILENO;
901 if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
902 {
903 log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
904 ret = -1;
905 goto cleanup;
906 }
907 #endif
908
909 BBS_last_access_tm = t_begin = time(NULL);
910 loop = 1;
911
912 while (loop && !SYS_server_exit)
913 {
914 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
915 {
916 log_debug("SSH channel is closed\n");
917 loop = 0;
918 break;
919 }
920
921 if (bbsnet_conf[n].use_ssh && ssh_channel_is_closed(outbound_channel))
922 {
923 log_debug("Outbound channel is closed\n");
924 loop = 0;
925 break;
926 }
927
928 #ifdef HAVE_SYS_EPOLL_H
929 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
930 ret = nfds;
931 #else
932 pfds[0].fd = STDIN_FILENO;
933 pfds[0].events = POLLIN;
934 pfds[1].fd = sock;
935 pfds[1].events = POLLIN | POLLOUT;
936 pfds[2].fd = STDOUT_FILENO;
937 pfds[2].events = POLLOUT;
938 nfds = 3;
939 ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
940 #endif
941
942 if (ret < 0)
943 {
944 if (errno != EINTR)
945 {
946 #ifdef HAVE_SYS_EPOLL_H
947 log_error("epoll_wait() error (%d)\n", errno);
948 #else
949 log_error("poll() error (%d)\n", errno);
950 #endif
951 break;
952 }
953 continue;
954 }
955 else if (ret == 0) // timeout
956 {
957 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
958 {
959 break;
960 }
961 }
962
963 for (int i = 0; i < nfds; i++)
964 {
965 #ifdef HAVE_SYS_EPOLL_H
966 if (events[i].events & (EPOLLHUP | EPOLLERR))
967 #else
968 if (pfds[i].revents & (POLLHUP | POLLERR))
969 #endif
970 {
971 #ifdef HAVE_SYS_EPOLL_H
972 log_debug("FD (%d) error events (%d)\n", events[i].data.fd, events[i].events);
973 #else
974 log_debug("FD (%d) error events (%d)\n", pfds[i].fd, pfds[i].revents);
975 #endif
976 loop = 0;
977 break;
978 }
979
980 #ifdef HAVE_SYS_EPOLL_H
981 if (events[i].data.fd == STDIN_FILENO && (events[i].events & EPOLLIN))
982 #else
983 if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
984 #endif
985 {
986 stdin_read_wait = 1;
987 }
988
989 #ifdef HAVE_SYS_EPOLL_H
990 if (events[i].data.fd == sock)
991 #else
992 if (pfds[i].fd == sock)
993 #endif
994 {
995 #ifdef HAVE_SYS_EPOLL_H
996 if (events[i].events & EPOLLIN)
997 #else
998 if (pfds[i].revents & POLLIN)
999 #endif
1000 {
1001 sock_read_wait = 1;
1002 }
1003
1004 #ifdef HAVE_SYS_EPOLL_H
1005 if (events[i].events & EPOLLOUT)
1006 #else
1007 if (pfds[i].revents & POLLOUT)
1008 #endif
1009 {
1010 sock_write_wait = 1;
1011 }
1012 }
1013
1014 #ifdef HAVE_SYS_EPOLL_H
1015 if (events[i].data.fd == STDOUT_FILENO && (events[i].events & EPOLLOUT))
1016 #else
1017 if (pfds[i].fd == STDOUT_FILENO && (pfds[i].revents & POLLOUT))
1018 #endif
1019 {
1020 stdout_write_wait = 1;
1021 }
1022 }
1023
1024 if (stdin_read_wait)
1025 {
1026 while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
1027 {
1028 if (SSH_v2)
1029 {
1030 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
1031 if (ret == SSH_ERROR)
1032 {
1033 log_debug("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
1034 loop = 0;
1035 break;
1036 }
1037 else if (ret == SSH_EOF)
1038 {
1039 stdin_read_wait = 0;
1040 loop = 0;
1041 break;
1042 }
1043 else if (ret == 0)
1044 {
1045 // Send NO-OP to remote server
1046 input_buf[input_buf_len] = '\0';
1047 input_buf_len++;
1048
1049 BBS_last_access_tm = time(NULL);
1050 stdin_read_wait = 0;
1051 break; // Check whether channel is still open
1052 }
1053 }
1054 else
1055 {
1056 ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
1057 }
1058 if (ret < 0)
1059 {
1060 if (errno == EAGAIN || errno == EWOULDBLOCK)
1061 {
1062 stdin_read_wait = 0;
1063 break;
1064 }
1065 else if (errno == EINTR)
1066 {
1067 continue;
1068 }
1069 else
1070 {
1071 log_error("read(STDIN) error (%d)\n", errno);
1072 loop = 0;
1073 break;
1074 }
1075 }
1076 else if (ret == 0) // broken pipe
1077 {
1078 log_debug("read(STDIN) EOF\n");
1079 stdin_read_wait = 0;
1080 loop = 0;
1081 break;
1082 }
1083 else
1084 {
1085 input_buf_len += ret;
1086 BBS_last_access_tm = time(NULL);
1087
1088 // Refresh current action while user input
1089 if (user_online_update("BBS_NET") < 0)
1090 {
1091 log_error("user_online_update(BBS_NET) error\n");
1092 }
1093
1094 continue;
1095 }
1096 }
1097 }
1098
1099 if (sock_write_wait)
1100 {
1101 if (input_buf_offset < input_buf_len)
1102 {
1103 // For debug
1104 #ifdef _DEBUG
1105 for (int j = input_buf_offset; j < input_buf_len; j++)
1106 {
1107 log_debug("input: <--[%u]\n", (input_buf[j] + 256) % 256);
1108 }
1109 #endif
1110
1111 ret = io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len);
1112 if (ret < 0)
1113 {
1114 log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len);
1115 input_buf_len = input_buf_offset; // Discard invalid sequence
1116 }
1117
1118 // For debug
1119 #ifdef _DEBUG
1120 for (int j = input_conv_offset; j < input_conv_len; j++)
1121 {
1122 log_debug("input_conv: <--[%u]\n", (input_conv[j] + 256) % 256);
1123 }
1124 #endif
1125 }
1126
1127 while (input_conv_offset < input_conv_len && !SYS_server_exit)
1128 {
1129 if (bbsnet_conf[n].use_ssh)
1130 {
1131 ret = ssh_channel_write(outbound_channel, input_conv + input_conv_offset, (uint32_t)(input_conv_len - input_conv_offset));
1132 if (ret == SSH_ERROR)
1133 {
1134 log_debug("ssh_channel_write() error: %s\n", ssh_get_error(outbound_session));
1135 loop = 0;
1136 break;
1137 }
1138 }
1139 else
1140 {
1141 ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
1142 }
1143 if (ret < 0)
1144 {
1145 if (errno == EAGAIN || errno == EWOULDBLOCK)
1146 {
1147 sock_write_wait = 0;
1148 break;
1149 }
1150 else if (errno == EINTR)
1151 {
1152 continue;
1153 }
1154 else
1155 {
1156 log_debug("write(socket) error (%d)\n", errno);
1157 loop = 0;
1158 break;
1159 }
1160 }
1161 else if (ret == 0) // broken pipe
1162 {
1163 log_debug("write(socket) EOF\n");
1164 sock_write_wait = 0;
1165 loop = 0;
1166 break;
1167 }
1168 else
1169 {
1170 input_conv_offset += ret;
1171 if (input_conv_offset >= input_conv_len) // Output buffer complete
1172 {
1173 input_conv_offset = 0;
1174 input_conv_len = 0;
1175 break;
1176 }
1177 continue;
1178 }
1179 }
1180 }
1181
1182 if (sock_read_wait)
1183 {
1184 while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
1185 {
1186 if (bbsnet_conf[n].use_ssh)
1187 {
1188 ret = ssh_channel_read_nonblocking(outbound_channel, output_buf + output_buf_len,
1189 (uint32_t)(sizeof(output_buf) - (size_t)output_buf_len), 0);
1190 if (ret == SSH_ERROR)
1191 {
1192 log_debug("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(outbound_session));
1193 loop = 0;
1194 break;
1195 }
1196 else if (ret == SSH_EOF)
1197 {
1198 sock_read_wait = 0;
1199 loop = 0;
1200 break;
1201 }
1202 else if (ret == 0)
1203 {
1204 sock_read_wait = 0;
1205 break;
1206 }
1207 }
1208 else
1209 {
1210 ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
1211 }
1212 if (ret < 0)
1213 {
1214 if (errno == EAGAIN || errno == EWOULDBLOCK)
1215 {
1216 sock_read_wait = 0;
1217 break;
1218 }
1219 else if (errno == EINTR)
1220 {
1221 continue;
1222 }
1223 else
1224 {
1225 log_debug("read(socket) error (%d)\n", errno);
1226 loop = 0;
1227 break;
1228 }
1229 }
1230 else if (ret == 0) // broken pipe
1231 {
1232 log_debug("read(socket) EOF\n");
1233 sock_read_wait = 0;
1234 loop = 0;
1235 break;
1236 }
1237 else
1238 {
1239 output_buf_len += ret;
1240 continue;
1241 }
1242 }
1243 }
1244
1245 if (stdout_write_wait)
1246 {
1247 if (output_buf_offset < output_buf_len)
1248 {
1249 ret = io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len);
1250 if (ret < 0)
1251 {
1252 log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len);
1253 output_buf_len = output_buf_offset; // Discard invalid sequence
1254 }
1255 }
1256
1257 while (output_conv_offset < output_conv_len && !SYS_server_exit)
1258 {
1259 if (SSH_v2)
1260 {
1261 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
1262 if (ret == SSH_ERROR)
1263 {
1264 log_debug("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
1265 loop = 0;
1266 break;
1267 }
1268 }
1269 else
1270 {
1271 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
1272 }
1273 if (ret < 0)
1274 {
1275 if (errno == EAGAIN || errno == EWOULDBLOCK)
1276 {
1277 stdout_write_wait = 0;
1278 break;
1279 }
1280 else if (errno == EINTR)
1281 {
1282 continue;
1283 }
1284 else
1285 {
1286 log_debug("write(STDOUT) error (%d)\n", errno);
1287 loop = 0;
1288 break;
1289 }
1290 }
1291 else if (ret == 0) // broken pipe
1292 {
1293 log_debug("write(STDOUT) EOF\n");
1294 stdout_write_wait = 0;
1295 loop = 0;
1296 break;
1297 }
1298 else
1299 {
1300 output_conv_offset += ret;
1301 if (output_conv_offset >= output_conv_len) // Output buffer complete
1302 {
1303 output_conv_offset = 0;
1304 output_conv_len = 0;
1305 break;
1306 }
1307 continue;
1308 }
1309 }
1310 }
1311 }
1312
1313 ret = 1; // Normal disconnect
1314 BBS_last_access_tm = time(NULL);
1315 t_used = BBS_last_access_tm - t_begin;
1316 log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n",
1317 t_used / 86400, t_used % 86400 / 3600, t_used % 3600 / 60, t_used % 60);
1318
1319 cleanup:
1320 // Clear sensitive data
1321 memset(remote_pass, 0, sizeof(remote_pass));
1322 memset(remote_user, 0, sizeof(remote_user));
1323
1324 if (input_cd != (iconv_t)(-1))
1325 {
1326 iconv_close(input_cd);
1327 }
1328 if (output_cd != (iconv_t)(-1))
1329 {
1330 iconv_close(output_cd);
1331 }
1332
1333 #ifdef HAVE_SYS_EPOLL_H
1334 if (epollfd != -1 && close(epollfd) < 0)
1335 {
1336 log_error("close(epoll) error (%d)\n");
1337 }
1338 #endif
1339
1340 if (bbsnet_conf[n].use_ssh)
1341 {
1342 if (outbound_channel != NULL)
1343 {
1344 ssh_channel_send_eof(outbound_channel);
1345 ssh_channel_close(outbound_channel);
1346 ssh_channel_free(outbound_channel);
1347 }
1348 if (outbound_session != NULL)
1349 {
1350 ssh_disconnect(outbound_session);
1351 ssh_free(outbound_session);
1352 }
1353 }
1354
1355 // Restore STDIN/STDOUT flags
1356 if (flags_stdin != -1 && fcntl(STDIN_FILENO, F_SETFL, flags_stdin) == -1)
1357 {
1358 log_error("fcntl(F_SETFL) error (%d)\n", errno);
1359 }
1360 if (flags_stdout != -1 && fcntl(STDOUT_FILENO, F_SETFL, flags_stdout) == -1)
1361 {
1362 log_error("fcntl(F_SETFL) error (%d)\n", errno);
1363 }
1364
1365 if (sock != -1 && close(sock) == -1)
1366 {
1367 log_error("Close socket failed\n");
1368 }
1369
1370 if (res)
1371 {
1372 freeaddrinfo(res);
1373 }
1374
1375 return ret;
1376 }
1377
1378 static int bbsnet_refresh()
1379 {
1380 clearscr();
1381
1382 moveto(1, 1);
1383 prints(" ------------------------------------------------------------------------------ ");
1384 for (int i = 2; i < 19; i++)
1385 {
1386 moveto(i, 1);
1387 prints("|");
1388 moveto(i, 80);
1389 prints("|");
1390 }
1391 moveto(19, 1);
1392 prints("|------------------------------------------------------------------------------|");
1393 moveto(22, 1);
1394 prints(" ------------------------------------------------------------------------------ ");
1395 moveto(23, 1);
1396 prints(" [\033[1;32mCtrl+C\033[m]退出");
1397
1398 iflush();
1399
1400 return 0;
1401 }
1402
1403 static int bbsnet_selchange()
1404 {
1405 int i = bbsnet_menu.menu_item_pos[0];
1406
1407 moveto(20, 1);
1408 clrtoeol();
1409 prints("|\033[1m单位: \033[1;33m%s\033[m%*s 站名: \033[1;33m%s\033[m%*s 类型: \033[1;33m%s\033[m",
1410 bbsnet_conf[i].org_name, 20 - str_length(bbsnet_conf[i].org_name, 1), "",
1411 bbsnet_conf[i].site_name, 20 - str_length(bbsnet_conf[i].site_name, 1), "",
1412 (bbsnet_conf[i].use_ssh ? "SSH" : "Telnet"));
1413 moveto(20, 80);
1414 prints("|");
1415 moveto(21, 1);
1416 clrtoeol();
1417 prints("|\033[1m连往: \033[1;33m%-20s\033[m 端口: \033[1;33m%-5s\033[m 编码: \033[1;33m%s\033[m",
1418 bbsnet_conf[i].host_name, bbsnet_conf[i].port, bbsnet_conf[i].charset);
1419 moveto(21, 80);
1420 prints("|");
1421 iflush();
1422
1423 return 0;
1424 }
1425
1426 int bbs_net()
1427 {
1428 int ch, i;
1429
1430 if (load_bbsnet_conf(CONF_BBSNET) < 0)
1431 {
1432 clearscr();
1433 moveto(1, 1);
1434 prints("加载穿梭配置失败!");
1435 press_any_key();
1436 return -1;
1437 }
1438
1439 bbsnet_refresh();
1440 display_menu(&bbsnet_menu);
1441 bbsnet_selchange();
1442
1443 while (!SYS_server_exit)
1444 {
1445 ch = igetch(100);
1446
1447 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
1448 {
1449 BBS_last_access_tm = time(NULL);
1450 }
1451
1452 switch (ch)
1453 {
1454 case KEY_NULL: // broken pipe
1455 log_debug("KEY_NULL\n");
1456 goto cleanup;
1457 case KEY_TIMEOUT:
1458 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
1459 {
1460 log_error("User input timeout\n");
1461 goto cleanup;
1462 }
1463 continue;
1464 case KEY_ESC:
1465 case Ctrl('C'): // user cancel
1466 goto cleanup;
1467 case CR:
1468 bbsnet_connect(bbsnet_menu.menu_item_pos[0]);
1469 // Force cleanup anything remaining in the output buffer
1470 clearscr();
1471 iflush();
1472 // Clear screen and redraw menu
1473 bbsnet_refresh();
1474 display_menu(&bbsnet_menu);
1475 bbsnet_selchange();
1476 break;
1477 case KEY_UP:
1478 for (i = 0; i < STATION_PER_LINE; i++)
1479 {
1480 menu_control(&bbsnet_menu, KEY_UP);
1481 }
1482 bbsnet_selchange();
1483 break;
1484 case KEY_DOWN:
1485 for (i = 0; i < STATION_PER_LINE; i++)
1486 {
1487 menu_control(&bbsnet_menu, KEY_DOWN);
1488 }
1489 bbsnet_selchange();
1490 break;
1491 case KEY_LEFT:
1492 menu_control(&bbsnet_menu, KEY_UP);
1493 bbsnet_selchange();
1494 break;
1495 case KEY_RIGHT:
1496 menu_control(&bbsnet_menu, KEY_DOWN);
1497 bbsnet_selchange();
1498 break;
1499 case KEY_HOME:
1500 case KEY_PGUP:
1501 menu_control(&bbsnet_menu, KEY_PGUP);
1502 bbsnet_selchange();
1503 break;
1504 case KEY_END:
1505 case KEY_PGDN:
1506 menu_control(&bbsnet_menu, KEY_PGDN);
1507 bbsnet_selchange();
1508 break;
1509 default:
1510 menu_control(&bbsnet_menu, ch);
1511 bbsnet_selchange();
1512 break;
1513 }
1514 }
1515
1516 cleanup:
1517 unload_bbsnet_conf();
1518
1519 return 0;
1520 }

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