/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.101 - (hide annotations)
Thu Dec 18 08:52:22 2025 UTC (2 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.100: +3 -3 lines
Content type: text/x-csrc 
Fix bug
1 sysadm 1.76 /* SPDX-License-Identifier: GPL-3.0-or-later */
2     /*
3     * bbs_net
4     * - user interactive feature of site shuttle
5     *
6 sysadm 1.77 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 sysadm 1.76 */
8 sysadm 1.1
9 sysadm 1.81 #ifdef HAVE_CONFIG_H
10     #include "config.h"
11     #endif
12    
13 sysadm 1.1 #include "bbs.h"
14 sysadm 1.83 #include "bbs_net.h"
15 sysadm 1.1 #include "common.h"
16 sysadm 1.55 #include "io.h"
17 sysadm 1.15 #include "log.h"
18 sysadm 1.55 #include "login.h"
19     #include "menu.h"
20 sysadm 1.15 #include "screen.h"
21 sysadm 1.84 #include "str_process.h"
22 sysadm 1.55 #include <errno.h>
23     #include <fcntl.h>
24     #include <netdb.h>
25     #include <stdarg.h>
26 sysadm 1.1 #include <stdio.h>
27 sysadm 1.55 #include <stdlib.h>
28 sysadm 1.29 #include <string.h>
29     #include <time.h>
30     #include <unistd.h>
31 sysadm 1.55 #include <arpa/inet.h>
32 sysadm 1.84 #include <ctype.h>
33 sysadm 1.55 #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 sysadm 1.29 #include <sys/select.h>
39 sysadm 1.1 #include <sys/ioctl.h>
40     #include <sys/socket.h>
41 sysadm 1.82
42     #ifdef HAVE_SYS_EPOLL_H
43 sysadm 1.38 #include <sys/epoll.h>
44 sysadm 1.82 #else
45     #include <poll.h>
46     #endif
47 sysadm 1.1
48 sysadm 1.80 static const char MENU_CONF_DELIM[] = " \t\r\n";
49 sysadm 1.26
50 sysadm 1.80 enum _bbs_net_constant_t
51     {
52     MAXSTATION = 26 * 2,
53     STATION_PER_LINE = 4,
54 sysadm 1.84 USERNAME_MAX_LEN = 20,
55     PASSWORD_MAX_LEN = 20,
56 sysadm 1.97 REMOTE_CONNECT_TIMEOUT = 10, // seconds
57     SSH_CONNECT_TIMEOUT = 5, // seconds
58     PROGRESS_BAR_LEN = 30,
59 sysadm 1.80 };
60 sysadm 1.1
61     struct _bbsnet_conf
62     {
63 sysadm 1.86 char org_name[40];
64     char site_name[40];
65     char host_name[IP_ADDR_LEN];
66 sysadm 1.93 char port[6];
67 sysadm 1.84 int8_t use_ssh;
68 sysadm 1.79 char charset[CHARSET_MAX_LEN + 1];
69 sysadm 1.1 } bbsnet_conf[MAXSTATION];
70    
71 sysadm 1.74 static MENU_SET bbsnet_menu;
72 sysadm 1.1
73 sysadm 1.89 static void unload_bbsnet_conf(void);
74    
75 sysadm 1.74 static int load_bbsnet_conf(const char *file_config)
76 sysadm 1.1 {
77 sysadm 1.14 FILE *fp;
78     MENU *p_menu;
79 sysadm 1.41 MENU_ITEM *p_menu_item;
80     MENU_ITEM_ID menu_item_id;
81 sysadm 1.86 char line[LINE_BUFFER_LEN], *t1, *t2, *t3, *t4, *t5, *t6, *saveptr;
82 sysadm 1.97 long port;
83     char *endptr;
84 sysadm 1.14
85 sysadm 1.89 unload_bbsnet_conf();
86 sysadm 1.14
87 sysadm 1.41 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 sysadm 1.89 return -1;
92 sysadm 1.41 }
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 sysadm 1.89 unload_bbsnet_conf();
100     return -1;
101 sysadm 1.41 }
102     bbsnet_menu.menu_item_count = MAXSTATION;
103    
104     p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
105 sysadm 1.40
106 sysadm 1.21 strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
107     p_menu->name[sizeof(p_menu->name) - 1] = '\0';
108 sysadm 1.14 p_menu->title.show = 0;
109 sysadm 1.41 p_menu->screen_show = 0;
110 sysadm 1.1
111 sysadm 1.89 fp = fopen(file_config, "r");
112     if (fp == NULL)
113     {
114     unload_bbsnet_conf();
115     return -2;
116     }
117    
118 sysadm 1.41 menu_item_id = 0;
119 sysadm 1.86 while (fgets(line, sizeof(line), fp) && menu_item_id < MAXSTATION)
120 sysadm 1.14 {
121 sysadm 1.86 t1 = strtok_r(line, MENU_CONF_DELIM, &saveptr);
122 sysadm 1.26 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 sysadm 1.60 t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
126 sysadm 1.84 t6 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
127 sysadm 1.14
128 sysadm 1.84 if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL ||
129 sysadm 1.97 t5 == NULL || t6 == NULL || t1[0] == '#')
130 sysadm 1.18 {
131 sysadm 1.14 continue;
132 sysadm 1.18 }
133    
134 sysadm 1.86 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 sysadm 1.97 port = strtol(t4, &endptr, 10);
141     if (*endptr != '\0' || port <= 0 || port > 65535)
142 sysadm 1.89 {
143 sysadm 1.98 log_error("Invalid port value %ld of menu item %d\n", port, menu_item_id);
144 sysadm 1.89 fclose(fp);
145     unload_bbsnet_conf();
146     return -3;
147     }
148 sysadm 1.93 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 sysadm 1.84 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 sysadm 1.60 bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0';
153 sysadm 1.14
154 sysadm 1.41 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 sysadm 1.89 fclose(fp);
159     unload_bbsnet_conf();
160     return -3;
161 sysadm 1.41 }
162 sysadm 1.14
163 sysadm 1.41 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 sysadm 1.97 (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id - MAXSTATION / 2);
171 sysadm 1.41 p_menu_item->name[1] = '\0';
172 sysadm 1.89 snprintf(p_menu_item->text, sizeof(p_menu_item->text), "\033[1;36m%c.\033[m %s",
173 sysadm 1.86 p_menu_item->name[0], bbsnet_conf[menu_item_id].site_name);
174 sysadm 1.41
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 sysadm 1.14
185 sysadm 1.41 fclose(fp);
186 sysadm 1.14
187     return 0;
188 sysadm 1.1 }
189    
190 sysadm 1.74 static void unload_bbsnet_conf(void)
191 sysadm 1.40 {
192 sysadm 1.41 bbsnet_menu.menu_count = 0;
193     bbsnet_menu.menu_item_count = 0;
194    
195 sysadm 1.89 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 sysadm 1.40 }
207    
208 sysadm 1.97 static void progress_bar(int percent, int len)
209 sysadm 1.1 {
210 sysadm 1.97 char line[LINE_BUFFER_LEN];
211 sysadm 1.27 char buf[LINE_BUFFER_LEN];
212     char buf2[LINE_BUFFER_LEN];
213 sysadm 1.97 int pos;
214 sysadm 1.27
215 sysadm 1.98 if (len < 4)
216 sysadm 1.89 {
217 sysadm 1.98 len = 4;
218 sysadm 1.89 }
219 sysadm 1.98 else if (len + 2 > LINE_BUFFER_LEN)
220 sysadm 1.27 {
221 sysadm 1.98 len = LINE_BUFFER_LEN - 3;
222 sysadm 1.27 }
223 sysadm 1.97 if (percent < 0)
224 sysadm 1.27 {
225 sysadm 1.97 percent = 0;
226 sysadm 1.27 }
227 sysadm 1.97 else if (percent > 100)
228 sysadm 1.27 {
229 sysadm 1.97 percent = 100;
230 sysadm 1.27 }
231 sysadm 1.14
232 sysadm 1.97 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 sysadm 1.84 moveto(4, 1);
248 sysadm 1.97 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 sysadm 1.14 iflush();
252 sysadm 1.1 }
253    
254 sysadm 1.74 static int bbsnet_connect(int n)
255 sysadm 1.1 {
256 sysadm 1.89 int sock = -1;
257 sysadm 1.97 int ret = 0;
258 sysadm 1.89 int loop;
259     int error;
260 sysadm 1.38 int sock_connected = 0;
261 sysadm 1.89 int flags_sock = -1;
262     int flags_stdin = -1;
263     int flags_stdout = -1;
264 sysadm 1.14 struct sockaddr_in sin;
265 sysadm 1.36 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 sysadm 1.60 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 sysadm 1.89 iconv_t input_cd = (iconv_t)(-1);
278     iconv_t output_cd = (iconv_t)(-1);
279     char tocode[CHARSET_MAX_LEN + 20];
280 sysadm 1.82
281     #ifdef HAVE_SYS_EPOLL_H
282 sysadm 1.38 struct epoll_event ev, events[MAX_EVENTS];
283 sysadm 1.89 int epollfd = -1;
284 sysadm 1.82 #else
285     struct pollfd pfds[3];
286     #endif
287    
288     int nfds;
289 sysadm 1.38 int stdin_read_wait = 0;
290     int stdout_write_wait = 0;
291     int sock_read_wait = 0;
292     int sock_write_wait = 0;
293 sysadm 1.93 struct addrinfo hints, *res = NULL;
294 sysadm 1.31 int tos;
295 sysadm 1.93 char remote_addr[INET_ADDRSTRLEN];
296 sysadm 1.14 int remote_port;
297 sysadm 1.93 char local_addr[INET_ADDRSTRLEN];
298 sysadm 1.63 int local_port;
299     socklen_t sock_len;
300 sysadm 1.97 time_t t_begin, t_used;
301     struct timespec ts_begin, ts_now;
302     int progress, progress_last;
303 sysadm 1.26 int ch;
304 sysadm 1.84 char remote_user[USERNAME_MAX_LEN + 1];
305     char remote_pass[PASSWORD_MAX_LEN + 1];
306 sysadm 1.97 ssh_session outbound_session = NULL;
307     ssh_channel outbound_channel = NULL;
308 sysadm 1.84 int ssh_process_config = 0;
309 sysadm 1.88 int ssh_log_level = SSH_LOG_NOLOG;
310 sysadm 1.14
311 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
312     {
313     log_error("user_online_update(BBS_NET) error\n");
314     }
315    
316 sysadm 1.84 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 sysadm 1.86 prints("通过SSH方式连接[%s]...", bbsnet_conf[n].site_name);
330 sysadm 1.84 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 sysadm 1.14 clearscr();
356    
357 sysadm 1.84 moveto(1, 1);
358 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
359 sysadm 1.86 bbsnet_conf[n].site_name, bbsnet_conf[n].host_name);
360 sysadm 1.14 iflush();
361    
362 sysadm 1.93 memset(&hints, 0, sizeof(hints));
363     hints.ai_family = AF_INET;
364     hints.ai_socktype = SOCK_STREAM;
365     hints.ai_protocol = IPPROTO_TCP;
366 sysadm 1.14
367 sysadm 1.93 if ((ret = getaddrinfo(BBS_address, NULL, &hints, &res)) != 0)
368 sysadm 1.1 {
369 sysadm 1.97 log_error("getaddrinfo() error (%d): %s\n", ret, gai_strerror(ret));
370     ret = -1;
371 sysadm 1.89 goto cleanup;
372 sysadm 1.1 }
373 sysadm 1.14
374 sysadm 1.97 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), local_addr, sizeof(local_addr)) == NULL)
375 sysadm 1.93 {
376     log_error("inet_ntop() error (%d)\n", errno);
377 sysadm 1.97 ret = -1;
378 sysadm 1.93 goto cleanup;
379     }
380     local_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
381 sysadm 1.14
382 sysadm 1.93 sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
383 sysadm 1.14 if (sock < 0)
384 sysadm 1.1 {
385 sysadm 1.93 log_error("socket() error (%d)\n", errno);
386 sysadm 1.97 ret = -1;
387 sysadm 1.93 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 sysadm 1.97 ret = -1;
394 sysadm 1.89 goto cleanup;
395 sysadm 1.1 }
396    
397 sysadm 1.93 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 sysadm 1.14
406 sysadm 1.93 if ((ret = getaddrinfo(bbsnet_conf[n].host_name, bbsnet_conf[n].port, &hints, &res)) != 0)
407 sysadm 1.14 {
408 sysadm 1.97 log_error("getaddrinfo() error (%d): %s\n", ret, gai_strerror(ret));
409 sysadm 1.93 prints("\033[1;31m查找主机名失败！\033[m\r\n");
410     press_any_key();
411 sysadm 1.97 ret = -1;
412 sysadm 1.89 goto cleanup;
413 sysadm 1.14 }
414 sysadm 1.1
415 sysadm 1.97 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), remote_addr, sizeof(remote_addr)) == NULL)
416 sysadm 1.93 {
417     log_error("inet_ntop() error (%d)\n", errno);
418 sysadm 1.97 ret = -1;
419 sysadm 1.93 goto cleanup;
420     }
421     remote_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
422 sysadm 1.14
423 sysadm 1.39 // Set socket as non-blocking
424 sysadm 1.89 if ((flags_sock = fcntl(sock, F_GETFL, 0)) == -1)
425     {
426     log_error("fcntl(F_GETFL) error (%d)\n", errno);
427 sysadm 1.97 ret = -1;
428 sysadm 1.89 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 sysadm 1.97 ret = -1;
434 sysadm 1.89 goto cleanup;
435     }
436 sysadm 1.39
437     // Set STDIN/STDOUT as non-blocking
438 sysadm 1.89 if ((flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0)) == -1)
439     {
440     log_error("fcntl(F_GETFL) error (%d)\n", errno);
441 sysadm 1.97 ret = -1;
442 sysadm 1.89 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 sysadm 1.97 ret = -1;
448 sysadm 1.89 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 sysadm 1.97 ret = -1;
454 sysadm 1.89 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 sysadm 1.97 ret = -1;
460 sysadm 1.89 goto cleanup;
461     }
462 sysadm 1.39
463 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
464 sysadm 1.38 epollfd = epoll_create1(0);
465     if (epollfd < 0)
466     {
467     log_error("epoll_create1() error (%d)\n", errno);
468 sysadm 1.97 ret = -1;
469 sysadm 1.89 goto cleanup;
470 sysadm 1.38 }
471    
472 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
473 sysadm 1.38 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 sysadm 1.97 ret = -1;
478 sysadm 1.39 goto cleanup;
479 sysadm 1.38 }
480    
481 sysadm 1.59 ev.events = EPOLLIN | EPOLLET;
482 sysadm 1.38 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 sysadm 1.97 ret = -1;
487 sysadm 1.39 goto cleanup;
488 sysadm 1.38 }
489 sysadm 1.82 #endif
490 sysadm 1.38
491     while (!SYS_server_exit)
492 sysadm 1.29 {
493 sysadm 1.97 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 sysadm 1.29 {
500 sysadm 1.38 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 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
515 sysadm 1.38 press_any_key();
516 sysadm 1.97 ret = -1;
517 sysadm 1.39 goto cleanup;
518 sysadm 1.38 }
519 sysadm 1.29 }
520     }
521    
522 sysadm 1.97 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 sysadm 1.101 while ((ts_now.tv_sec - ts_begin.tv_sec) * 1000 +
535     (ts_now.tv_nsec - ts_begin.tv_nsec) / 1000 / 1000 <
536     REMOTE_CONNECT_TIMEOUT * 1000 &&
537 sysadm 1.97 !sock_connected && !SYS_server_exit)
538 sysadm 1.1 {
539 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
540 sysadm 1.97 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
541 sysadm 1.82 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 sysadm 1.97 ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
549 sysadm 1.82 #endif
550 sysadm 1.29
551 sysadm 1.82 if (ret < 0)
552 sysadm 1.20 {
553 sysadm 1.29 if (errno != EINTR)
554     {
555 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
556 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
557 sysadm 1.82 #else
558     log_error("poll() error (%d)\n", errno);
559     #endif
560 sysadm 1.39 break;
561 sysadm 1.29 }
562 sysadm 1.20 }
563 sysadm 1.82 else if (ret == 0) // timeout
564 sysadm 1.38 {
565 sysadm 1.97 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 sysadm 1.100 if (progress < 0)
577     {
578     progress = 0;
579     }
580     if (progress > 100)
581     {
582     progress = 100;
583     }
584 sysadm 1.97
585     if (progress > progress_last)
586     {
587     progress_last = progress;
588     progress_bar(progress, PROGRESS_BAR_LEN);
589     }
590 sysadm 1.38 }
591     else // ret > 0
592 sysadm 1.14 {
593 sysadm 1.38 for (int i = 0; i < nfds; i++)
594 sysadm 1.29 {
595 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
596 sysadm 1.38 if (events[i].data.fd == sock)
597 sysadm 1.82 #else
598     if (pfds[i].fd == sock && (pfds[i].revents & POLLOUT))
599     #endif
600 sysadm 1.38 {
601 sysadm 1.89 socklen_t len = sizeof(error);
602     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &len) < 0)
603 sysadm 1.38 {
604 sysadm 1.89 log_error("getsockopt() error (%d) !\n", errno);
605 sysadm 1.97 ret = -1;
606 sysadm 1.39 goto cleanup;
607 sysadm 1.38 }
608     if (error == 0)
609     {
610     sock_connected = 1;
611 sysadm 1.97 break;
612 sysadm 1.38 }
613     }
614 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
615 sysadm 1.38 else if (events[i].data.fd == STDIN_FILENO)
616 sysadm 1.82 #else
617     else if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
618     #endif
619 sysadm 1.38 {
620 sysadm 1.84 do
621     {
622     ch = igetch(0);
623     } while (ch == 0);
624 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
625 sysadm 1.38 {
626 sysadm 1.97 ret = 0;
627 sysadm 1.39 goto cleanup;
628 sysadm 1.38 }
629     }
630 sysadm 1.29 }
631 sysadm 1.14 }
632 sysadm 1.12 }
633 sysadm 1.38 if (SYS_server_exit)
634     {
635 sysadm 1.97 ret = 0;
636 sysadm 1.39 goto cleanup;
637 sysadm 1.38 }
638     if (!sock_connected)
639 sysadm 1.12 {
640 sysadm 1.97 progress_bar(100, PROGRESS_BAR_LEN);
641 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
642 sysadm 1.14 press_any_key();
643 sysadm 1.97 ret = -1;
644 sysadm 1.39 goto cleanup;
645 sysadm 1.12 }
646 sysadm 1.29
647 sysadm 1.31 tos = IPTOS_LOWDELAY;
648     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
649     {
650     log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
651     }
652 sysadm 1.14
653 sysadm 1.63 sock_len = sizeof(sin);
654     if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
655     {
656     log_error("getsockname() error: %d", errno);
657 sysadm 1.97 ret = -1;
658 sysadm 1.63 goto cleanup;
659     }
660    
661 sysadm 1.97 if (inet_ntop(AF_INET, &(sin.sin_addr), local_addr, sizeof(local_addr)) == NULL)
662     {
663     log_error("inet_ntop() error (%d)\n", errno);
664     ret = -1;
665     goto cleanup;
666     }
667 sysadm 1.63 local_port = ntohs(sin.sin_port);
668    
669 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
670     {
671 sysadm 1.97 outbound_session = ssh_new();
672     if (outbound_session == NULL)
673 sysadm 1.84 {
674     log_error("ssh_new() error\n");
675 sysadm 1.97 ret = -1;
676 sysadm 1.84 goto cleanup;
677     }
678    
679 sysadm 1.97 if (ssh_options_set(outbound_session, SSH_OPTIONS_FD, &sock) < 0 ||
680     ssh_options_set(outbound_session, SSH_OPTIONS_PROCESS_CONFIG, &ssh_process_config) < 0 ||
681     ssh_options_set(outbound_session, SSH_OPTIONS_KNOWNHOSTS, SSH_KNOWN_HOSTS_FILE) < 0 ||
682     ssh_options_set(outbound_session, SSH_OPTIONS_HOST, bbsnet_conf[n].host_name) < 0 ||
683     ssh_options_set(outbound_session, SSH_OPTIONS_USER, remote_user) < 0 ||
684     ssh_options_set(outbound_session, SSH_OPTIONS_HOSTKEYS, "+ssh-ed25519,ecdsa-sha2-nistp256,ssh-rsa") < 0 ||
685     ssh_options_set(outbound_session, SSH_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
686 sysadm 1.84 {
687 sysadm 1.97 log_error("Error setting SSH options: %s\n", ssh_get_error(outbound_session));
688     ret = -1;
689 sysadm 1.84 goto cleanup;
690     }
691    
692 sysadm 1.97 ssh_set_blocking(outbound_session, 0);
693 sysadm 1.85
694 sysadm 1.90 t_begin = time(NULL);
695     ret = SSH_ERROR;
696     while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
697 sysadm 1.84 {
698 sysadm 1.97 ret = ssh_connect(outbound_session);
699 sysadm 1.84 if (ret == SSH_OK)
700     {
701     break;
702     }
703 sysadm 1.90 else if (ret == SSH_AGAIN)
704     {
705 sysadm 1.97 // log_debug("ssh_connect() error: SSH_AGAIN\n");
706 sysadm 1.90 }
707     else // if (ret == SSH_ERROR)
708 sysadm 1.84 {
709 sysadm 1.90 log_error("ssh_connect() error: SSH_ERROR\n");
710 sysadm 1.97 ret = -1;
711 sysadm 1.84 goto cleanup;
712     }
713     }
714 sysadm 1.90 if (ret != SSH_OK)
715     {
716     prints("\033[1;31m连接超时！\033[m\r\n");
717     press_any_key();
718 sysadm 1.97 ret = -1;
719 sysadm 1.90 goto cleanup;
720     }
721 sysadm 1.84
722 sysadm 1.97 ret = ssh_session_is_known_server(outbound_session);
723 sysadm 1.85 switch (ret)
724     {
725     case SSH_KNOWN_HOSTS_NOT_FOUND:
726     case SSH_KNOWN_HOSTS_UNKNOWN:
727 sysadm 1.97 if (ssh_session_update_known_hosts(outbound_session) != SSH_OK)
728 sysadm 1.85 {
729 sysadm 1.86 log_error("ssh_session_update_known_hosts(%s) error\n", bbsnet_conf[n].host_name);
730 sysadm 1.90 prints("\033[1;31m无法添加服务器证书\033[m\r\n");
731 sysadm 1.85 press_any_key();
732 sysadm 1.97 ret = -1;
733 sysadm 1.85 goto cleanup;
734     }
735 sysadm 1.86 log_common("SSH key of (%s) is added into %s\n", bbsnet_conf[n].host_name, SSH_KNOWN_HOSTS_FILE);
736 sysadm 1.85 case SSH_KNOWN_HOSTS_OK:
737     break;
738     case SSH_KNOWN_HOSTS_CHANGED:
739     case SSH_KNOWN_HOSTS_OTHER:
740 sysadm 1.86 log_error("ssh_session_is_known_server(%s) error: %d\n", bbsnet_conf[n].host_name, ret);
741 sysadm 1.90 prints("\033[1;31m服务器证书已变更\033[m\r\n");
742 sysadm 1.85 press_any_key();
743 sysadm 1.97 ret = -1;
744 sysadm 1.85 goto cleanup;
745     }
746 sysadm 1.84
747 sysadm 1.90 ret = SSH_AUTH_ERROR;
748     while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
749 sysadm 1.84 {
750 sysadm 1.97 ret = ssh_userauth_password(outbound_session, NULL, remote_pass);
751 sysadm 1.84 if (ret == SSH_AUTH_SUCCESS)
752     {
753     break;
754     }
755     else if (ret == SSH_AUTH_AGAIN)
756     {
757 sysadm 1.97 // log_debug("ssh_userauth_password() error: SSH_AUTH_AGAIN\n");
758 sysadm 1.84 }
759     else if (ret == SSH_AUTH_ERROR)
760     {
761 sysadm 1.90 log_error("ssh_userauth_password() error: SSH_AUTH_ERROR\n");
762 sysadm 1.97 ret = -1;
763 sysadm 1.84 goto cleanup;
764     }
765     else // if (ret == SSH_AUTH_DENIED)
766     {
767 sysadm 1.90 log_error("ssh_userauth_password() error: SSH_AUTH_DENIED\n");
768 sysadm 1.84 prints("\033[1;31m身份验证失败！\033[m\r\n");
769 sysadm 1.90 press_any_key();
770 sysadm 1.97 ret = -1;
771 sysadm 1.90 goto cleanup;
772 sysadm 1.84 }
773     }
774 sysadm 1.90 if (ret != SSH_AUTH_SUCCESS)
775     {
776     prints("\033[1;31m连接超时！\033[m\r\n");
777     press_any_key();
778 sysadm 1.97 ret = -1;
779 sysadm 1.90 goto cleanup;
780     }
781 sysadm 1.84
782 sysadm 1.97 outbound_channel = ssh_channel_new(outbound_session);
783     if (outbound_channel == NULL)
784 sysadm 1.84 {
785     log_error("ssh_channel_new() error\n");
786 sysadm 1.97 ret = -1;
787 sysadm 1.84 goto cleanup;
788     }
789    
790 sysadm 1.90 ret = SSH_ERROR;
791     while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
792 sysadm 1.84 {
793 sysadm 1.97 ret = ssh_channel_open_session(outbound_channel);
794 sysadm 1.84 if (ret == SSH_OK)
795     {
796     break;
797     }
798 sysadm 1.90 else if (ret == SSH_AGAIN)
799     {
800 sysadm 1.97 // log_debug("ssh_channel_open_session() error: SSH_AGAIN\n");
801 sysadm 1.90 }
802     else // if (ret == SSH_ERROR)
803 sysadm 1.84 {
804 sysadm 1.90 log_error("ssh_channel_open_session() error: SSH_ERROR\n");
805 sysadm 1.97 ret = -1;
806 sysadm 1.84 goto cleanup;
807     }
808     }
809 sysadm 1.90 if (ret != SSH_OK)
810     {
811     prints("\033[1;31m连接超时！\033[m\r\n");
812     press_any_key();
813 sysadm 1.97 ret = -1;
814 sysadm 1.90 goto cleanup;
815     }
816 sysadm 1.84
817 sysadm 1.90 ret = SSH_ERROR;
818     while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
819 sysadm 1.84 {
820 sysadm 1.97 ret = ssh_channel_request_pty(outbound_channel);
821 sysadm 1.84 if (ret == SSH_OK)
822     {
823     break;
824     }
825 sysadm 1.90 else if (ret == SSH_AGAIN)
826     {
827 sysadm 1.97 // log_debug("ssh_channel_request_pty() error: SSH_AGAIN\n");
828 sysadm 1.90 }
829     else // if (ret == SSH_ERROR)
830 sysadm 1.84 {
831 sysadm 1.90 log_error("ssh_channel_request_pty() error: SSH_ERROR\n");
832 sysadm 1.97 ret = -1;
833 sysadm 1.84 goto cleanup;
834     }
835     }
836 sysadm 1.90 if (ret != SSH_OK)
837     {
838     prints("\033[1;31m连接超时！\033[m\r\n");
839     press_any_key();
840 sysadm 1.97 ret = -1;
841 sysadm 1.90 goto cleanup;
842     }
843 sysadm 1.84
844 sysadm 1.90 ret = SSH_ERROR;
845     while (!SYS_server_exit && time(NULL) - t_begin < SSH_CONNECT_TIMEOUT)
846 sysadm 1.84 {
847 sysadm 1.97 ret = ssh_channel_request_shell(outbound_channel);
848 sysadm 1.84 if (ret == SSH_OK)
849     {
850     break;
851     }
852 sysadm 1.90 else if (ret == SSH_AGAIN)
853     {
854 sysadm 1.97 // log_debug("ssh_channel_request_shell() error: SSH_AGAIN\n");
855 sysadm 1.90 }
856     else // if (ret == SSH_ERROR)
857 sysadm 1.84 {
858 sysadm 1.90 log_error("ssh_channel_request_shell() error: SSH_ERROR\n");
859 sysadm 1.97 ret = -1;
860 sysadm 1.84 goto cleanup;
861     }
862     }
863 sysadm 1.90 if (ret != SSH_OK)
864 sysadm 1.89 {
865 sysadm 1.90 prints("\033[1;31m连接超时！\033[m\r\n");
866     press_any_key();
867 sysadm 1.97 ret = -1;
868 sysadm 1.89 goto cleanup;
869     }
870 sysadm 1.84 }
871    
872 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
873 sysadm 1.33 iflush();
874 sysadm 1.63 log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n",
875     remote_addr, remote_port, local_addr, local_port, BBS_username);
876 sysadm 1.14
877 sysadm 1.71 snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset,
878     (strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE"));
879 sysadm 1.68 input_cd = iconv_open(tocode, stdio_charset);
880 sysadm 1.60 if (input_cd == (iconv_t)(-1))
881     {
882 sysadm 1.68 log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno);
883 sysadm 1.97 ret = -1;
884 sysadm 1.60 goto cleanup;
885     }
886 sysadm 1.68
887 sysadm 1.71 snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset,
888     (strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT"));
889 sysadm 1.70 output_cd = iconv_open(tocode, bbsnet_conf[n].charset);
890 sysadm 1.67 if (output_cd == (iconv_t)(-1))
891 sysadm 1.60 {
892 sysadm 1.68 log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, tocode, errno);
893 sysadm 1.97 ret = -1;
894 sysadm 1.60 goto cleanup;
895     }
896    
897 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
898 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
899     ev.data.fd = sock;
900     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
901     {
902     log_error("epoll_ctl(socket) error (%d)\n", errno);
903 sysadm 1.97 ret = -1;
904 sysadm 1.39 goto cleanup;
905 sysadm 1.38 }
906    
907 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
908 sysadm 1.38 ev.data.fd = STDOUT_FILENO;
909     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
910     {
911     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
912 sysadm 1.97 ret = -1;
913 sysadm 1.39 goto cleanup;
914 sysadm 1.38 }
915 sysadm 1.82 #endif
916 sysadm 1.38
917 sysadm 1.97 BBS_last_access_tm = t_begin = time(NULL);
918 sysadm 1.14 loop = 1;
919    
920 sysadm 1.26 while (loop && !SYS_server_exit)
921 sysadm 1.12 {
922 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
923     {
924 sysadm 1.95 log_debug("SSH channel is closed\n");
925 sysadm 1.47 loop = 0;
926     break;
927     }
928    
929 sysadm 1.97 if (bbsnet_conf[n].use_ssh && ssh_channel_is_closed(outbound_channel))
930 sysadm 1.84 {
931 sysadm 1.97 log_debug("Outbound channel is closed\n");
932 sysadm 1.84 loop = 0;
933     break;
934     }
935    
936 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
937 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
938 sysadm 1.82 ret = nfds;
939     #else
940     pfds[0].fd = STDIN_FILENO;
941     pfds[0].events = POLLIN;
942     pfds[1].fd = sock;
943     pfds[1].events = POLLIN | POLLOUT;
944     pfds[2].fd = STDOUT_FILENO;
945     pfds[2].events = POLLOUT;
946     nfds = 3;
947     ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
948     #endif
949 sysadm 1.33
950 sysadm 1.82 if (ret < 0)
951 sysadm 1.14 {
952 sysadm 1.38 if (errno != EINTR)
953 sysadm 1.14 {
954 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
955 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
956 sysadm 1.82 #else
957     log_error("poll() error (%d)\n", errno);
958     #endif
959 sysadm 1.38 break;
960 sysadm 1.14 }
961 sysadm 1.38 continue;
962 sysadm 1.14 }
963 sysadm 1.82 else if (ret == 0) // timeout
964 sysadm 1.1 {
965 sysadm 1.78 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
966 sysadm 1.28 {
967 sysadm 1.38 break;
968 sysadm 1.28 }
969 sysadm 1.1 }
970 sysadm 1.38
971     for (int i = 0; i < nfds; i++)
972 sysadm 1.1 {
973 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
974 sysadm 1.96 if (events[i].events & (EPOLLHUP | EPOLLERR))
975 sysadm 1.94 #else
976 sysadm 1.96 if (pfds[i].revents & (POLLHUP | POLLERR))
977 sysadm 1.94 #endif
978     {
979     #ifdef HAVE_SYS_EPOLL_H
980 sysadm 1.95 log_debug("FD (%d) error events (%d)\n", events[i].data.fd, events[i].events);
981 sysadm 1.94 #else
982 sysadm 1.95 log_debug("FD (%d) error events (%d)\n", pfds[i].fd, pfds[i].revents);
983 sysadm 1.94 #endif
984     loop = 0;
985     break;
986     }
987    
988     #ifdef HAVE_SYS_EPOLL_H
989     if (events[i].data.fd == STDIN_FILENO && (events[i].events & EPOLLIN))
990 sysadm 1.82 #else
991     if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
992     #endif
993 sysadm 1.14 {
994 sysadm 1.38 stdin_read_wait = 1;
995 sysadm 1.59 }
996    
997 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
998 sysadm 1.59 if (events[i].data.fd == sock)
999 sysadm 1.82 #else
1000     if (pfds[i].fd == sock)
1001     #endif
1002 sysadm 1.59 {
1003 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
1004 sysadm 1.59 if (events[i].events & EPOLLIN)
1005 sysadm 1.82 #else
1006     if (pfds[i].revents & POLLIN)
1007     #endif
1008 sysadm 1.59 {
1009     sock_read_wait = 1;
1010     }
1011 sysadm 1.82
1012     #ifdef HAVE_SYS_EPOLL_H
1013 sysadm 1.59 if (events[i].events & EPOLLOUT)
1014 sysadm 1.82 #else
1015     if (pfds[i].revents & POLLOUT)
1016     #endif
1017 sysadm 1.59 {
1018     sock_write_wait = 1;
1019     }
1020     }
1021    
1022 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
1023 sysadm 1.94 if (events[i].data.fd == STDOUT_FILENO && (events[i].events & EPOLLOUT))
1024 sysadm 1.82 #else
1025     if (pfds[i].fd == STDOUT_FILENO && (pfds[i].revents & POLLOUT))
1026 sysadm 1.84 #endif
1027 sysadm 1.59 {
1028     stdout_write_wait = 1;
1029     }
1030     }
1031    
1032     if (stdin_read_wait)
1033     {
1034     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
1035     {
1036     if (SSH_v2)
1037 sysadm 1.33 {
1038 sysadm 1.59 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
1039     if (ret == SSH_ERROR)
1040 sysadm 1.47 {
1041 sysadm 1.95 log_debug("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
1042 sysadm 1.59 loop = 0;
1043     break;
1044 sysadm 1.47 }
1045 sysadm 1.59 else if (ret == SSH_EOF)
1046 sysadm 1.47 {
1047 sysadm 1.59 stdin_read_wait = 0;
1048     loop = 0;
1049     break;
1050 sysadm 1.47 }
1051 sysadm 1.59 else if (ret == 0)
1052 sysadm 1.33 {
1053 sysadm 1.72 // Send NO-OP to remote server
1054     input_buf[input_buf_len] = '\0';
1055     input_buf_len++;
1056 sysadm 1.97
1057 sysadm 1.73 BBS_last_access_tm = time(NULL);
1058 sysadm 1.59 stdin_read_wait = 0;
1059     break; // Check whether channel is still open
1060 sysadm 1.38 }
1061 sysadm 1.59 }
1062     else
1063     {
1064     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
1065     }
1066     if (ret < 0)
1067     {
1068     if (errno == EAGAIN || errno == EWOULDBLOCK)
1069 sysadm 1.38 {
1070     stdin_read_wait = 0;
1071     break;
1072     }
1073 sysadm 1.59 else if (errno == EINTR)
1074     {
1075     continue;
1076     }
1077 sysadm 1.38 else
1078     {
1079 sysadm 1.59 log_error("read(STDIN) error (%d)\n", errno);
1080     loop = 0;
1081     break;
1082     }
1083     }
1084     else if (ret == 0) // broken pipe
1085     {
1086 sysadm 1.95 log_debug("read(STDIN) EOF\n");
1087 sysadm 1.59 stdin_read_wait = 0;
1088     loop = 0;
1089     break;
1090     }
1091     else
1092     {
1093     input_buf_len += ret;
1094     BBS_last_access_tm = time(NULL);
1095 sysadm 1.58
1096 sysadm 1.59 // Refresh current action while user input
1097     if (user_online_update("BBS_NET") < 0)
1098     {
1099     log_error("user_online_update(BBS_NET) error\n");
1100     }
1101 sysadm 1.58
1102 sysadm 1.59 continue;
1103 sysadm 1.33 }
1104 sysadm 1.36 }
1105 sysadm 1.59 }
1106 sysadm 1.29
1107 sysadm 1.59 if (sock_write_wait)
1108     {
1109 sysadm 1.60 if (input_buf_offset < input_buf_len)
1110 sysadm 1.36 {
1111 sysadm 1.72 // For debug
1112     #ifdef _DEBUG
1113     for (int j = input_buf_offset; j < input_buf_len; j++)
1114     {
1115 sysadm 1.95 log_debug("input: <--[%u]\n", (input_buf[j] + 256) % 256);
1116 sysadm 1.72 }
1117     #endif
1118    
1119 sysadm 1.66 ret = io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len);
1120 sysadm 1.60 if (ret < 0)
1121     {
1122 sysadm 1.66 log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len);
1123 sysadm 1.71 input_buf_len = input_buf_offset; // Discard invalid sequence
1124 sysadm 1.60 }
1125 sysadm 1.72
1126     // For debug
1127     #ifdef _DEBUG
1128     for (int j = input_conv_offset; j < input_conv_len; j++)
1129     {
1130 sysadm 1.95 log_debug("input_conv: <--[%u]\n", (input_conv[j] + 256) % 256);
1131 sysadm 1.72 }
1132     #endif
1133 sysadm 1.60 }
1134    
1135     while (input_conv_offset < input_conv_len && !SYS_server_exit)
1136     {
1137 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1138     {
1139 sysadm 1.97 ret = ssh_channel_write(outbound_channel, input_conv + input_conv_offset, (uint32_t)(input_conv_len - input_conv_offset));
1140 sysadm 1.84 if (ret == SSH_ERROR)
1141     {
1142 sysadm 1.97 log_debug("ssh_channel_write() error: %s\n", ssh_get_error(outbound_session));
1143 sysadm 1.84 loop = 0;
1144     break;
1145     }
1146     }
1147     else
1148     {
1149     ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
1150     }
1151 sysadm 1.59 if (ret < 0)
1152 sysadm 1.36 {
1153 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
1154 sysadm 1.36 {
1155 sysadm 1.59 sock_write_wait = 0;
1156     break;
1157 sysadm 1.38 }
1158 sysadm 1.59 else if (errno == EINTR)
1159 sysadm 1.38 {
1160 sysadm 1.59 continue;
1161     }
1162     else
1163     {
1164 sysadm 1.95 log_debug("write(socket) error (%d)\n", errno);
1165 sysadm 1.36 loop = 0;
1166 sysadm 1.38 break;
1167     }
1168 sysadm 1.59 }
1169     else if (ret == 0) // broken pipe
1170     {
1171 sysadm 1.95 log_debug("write(socket) EOF\n");
1172 sysadm 1.59 sock_write_wait = 0;
1173     loop = 0;
1174     break;
1175     }
1176     else
1177     {
1178 sysadm 1.60 input_conv_offset += ret;
1179     if (input_conv_offset >= input_conv_len) // Output buffer complete
1180 sysadm 1.38 {
1181 sysadm 1.60 input_conv_offset = 0;
1182     input_conv_len = 0;
1183 sysadm 1.59 break;
1184 sysadm 1.36 }
1185 sysadm 1.59 continue;
1186 sysadm 1.36 }
1187 sysadm 1.14 }
1188 sysadm 1.59 }
1189 sysadm 1.36
1190 sysadm 1.59 if (sock_read_wait)
1191     {
1192     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
1193 sysadm 1.14 {
1194 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1195     {
1196 sysadm 1.97 ret = ssh_channel_read_nonblocking(outbound_channel, output_buf + output_buf_len,
1197 sysadm 1.84 (uint32_t)(sizeof(output_buf) - (size_t)output_buf_len), 0);
1198     if (ret == SSH_ERROR)
1199     {
1200 sysadm 1.97 log_debug("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(outbound_session));
1201 sysadm 1.84 loop = 0;
1202     break;
1203     }
1204     else if (ret == SSH_EOF)
1205     {
1206     sock_read_wait = 0;
1207     loop = 0;
1208     break;
1209     }
1210     else if (ret == 0)
1211     {
1212     sock_read_wait = 0;
1213     break;
1214     }
1215     }
1216     else
1217     {
1218     ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
1219     }
1220 sysadm 1.59 if (ret < 0)
1221 sysadm 1.14 {
1222 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
1223 sysadm 1.38 {
1224 sysadm 1.59 sock_read_wait = 0;
1225     break;
1226 sysadm 1.38 }
1227 sysadm 1.59 else if (errno == EINTR)
1228 sysadm 1.33 {
1229 sysadm 1.59 continue;
1230 sysadm 1.38 }
1231     else
1232     {
1233 sysadm 1.95 log_debug("read(socket) error (%d)\n", errno);
1234 sysadm 1.59 loop = 0;
1235     break;
1236 sysadm 1.33 }
1237     }
1238 sysadm 1.59 else if (ret == 0) // broken pipe
1239     {
1240 sysadm 1.95 log_debug("read(socket) EOF\n");
1241 sysadm 1.59 sock_read_wait = 0;
1242     loop = 0;
1243     break;
1244     }
1245     else
1246     {
1247     output_buf_len += ret;
1248     continue;
1249     }
1250 sysadm 1.36 }
1251 sysadm 1.59 }
1252 sysadm 1.36
1253 sysadm 1.59 if (stdout_write_wait)
1254     {
1255 sysadm 1.60 if (output_buf_offset < output_buf_len)
1256     {
1257 sysadm 1.66 ret = io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len);
1258 sysadm 1.60 if (ret < 0)
1259     {
1260 sysadm 1.66 log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len);
1261 sysadm 1.71 output_buf_len = output_buf_offset; // Discard invalid sequence
1262 sysadm 1.60 }
1263     }
1264    
1265     while (output_conv_offset < output_conv_len && !SYS_server_exit)
1266 sysadm 1.36 {
1267 sysadm 1.59 if (SSH_v2)
1268 sysadm 1.36 {
1269 sysadm 1.60 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
1270 sysadm 1.59 if (ret == SSH_ERROR)
1271 sysadm 1.47 {
1272 sysadm 1.95 log_debug("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
1273 sysadm 1.59 loop = 0;
1274     break;
1275 sysadm 1.47 }
1276 sysadm 1.59 }
1277     else
1278     {
1279 sysadm 1.60 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
1280 sysadm 1.59 }
1281     if (ret < 0)
1282     {
1283     if (errno == EAGAIN || errno == EWOULDBLOCK)
1284 sysadm 1.47 {
1285 sysadm 1.59 stdout_write_wait = 0;
1286     break;
1287 sysadm 1.47 }
1288 sysadm 1.59 else if (errno == EINTR)
1289 sysadm 1.38 {
1290 sysadm 1.59 continue;
1291 sysadm 1.38 }
1292 sysadm 1.59 else
1293 sysadm 1.33 {
1294 sysadm 1.95 log_debug("write(STDOUT) error (%d)\n", errno);
1295 sysadm 1.36 loop = 0;
1296 sysadm 1.38 break;
1297     }
1298 sysadm 1.59 }
1299     else if (ret == 0) // broken pipe
1300     {
1301 sysadm 1.95 log_debug("write(STDOUT) EOF\n");
1302 sysadm 1.59 stdout_write_wait = 0;
1303     loop = 0;
1304     break;
1305     }
1306     else
1307     {
1308 sysadm 1.60 output_conv_offset += ret;
1309     if (output_conv_offset >= output_conv_len) // Output buffer complete
1310 sysadm 1.38 {
1311 sysadm 1.60 output_conv_offset = 0;
1312     output_conv_len = 0;
1313 sysadm 1.59 break;
1314 sysadm 1.36 }
1315 sysadm 1.59 continue;
1316 sysadm 1.36 }
1317 sysadm 1.14 }
1318 sysadm 1.1 }
1319     }
1320    
1321 sysadm 1.97 ret = 1; // Normal disconnect
1322     BBS_last_access_tm = time(NULL);
1323     t_used = BBS_last_access_tm - t_begin;
1324 sysadm 1.99 log_common("BBSNET disconnect, %ld days %ld hours %ld minutes %ld seconds used\n",
1325 sysadm 1.97 t_used / 86400, t_used % 86400 / 3600, t_used % 3600 / 60, t_used % 60);
1326    
1327 sysadm 1.89 cleanup:
1328 sysadm 1.97 // Clear sensitive data
1329     memset(remote_pass, 0, sizeof(remote_pass));
1330     memset(remote_user, 0, sizeof(remote_user));
1331    
1332 sysadm 1.89 if (input_cd != (iconv_t)(-1))
1333     {
1334     iconv_close(input_cd);
1335     }
1336     if (output_cd != (iconv_t)(-1))
1337     {
1338     iconv_close(output_cd);
1339     }
1340 sysadm 1.60
1341 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
1342 sysadm 1.89 if (epollfd != -1 && close(epollfd) < 0)
1343 sysadm 1.39 {
1344     log_error("close(epoll) error (%d)\n");
1345     }
1346 sysadm 1.82 #endif
1347 sysadm 1.39
1348 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1349     {
1350 sysadm 1.97 if (outbound_channel != NULL)
1351 sysadm 1.89 {
1352 sysadm 1.97 ssh_channel_send_eof(outbound_channel);
1353     ssh_channel_close(outbound_channel);
1354     ssh_channel_free(outbound_channel);
1355 sysadm 1.89 }
1356 sysadm 1.97 if (outbound_session != NULL)
1357 sysadm 1.89 {
1358 sysadm 1.97 ssh_disconnect(outbound_session);
1359     ssh_free(outbound_session);
1360 sysadm 1.89 }
1361 sysadm 1.84 }
1362    
1363 sysadm 1.36 // Restore STDIN/STDOUT flags
1364 sysadm 1.90 if (flags_stdin != -1 && fcntl(STDIN_FILENO, F_SETFL, flags_stdin) == -1)
1365 sysadm 1.89 {
1366     log_error("fcntl(F_SETFL) error (%d)\n", errno);
1367     }
1368     if (flags_stdout != -1 && fcntl(STDOUT_FILENO, F_SETFL, flags_stdout) == -1)
1369     {
1370     log_error("fcntl(F_SETFL) error (%d)\n", errno);
1371     }
1372 sysadm 1.36
1373 sysadm 1.89 if (sock != -1 && close(sock) == -1)
1374 sysadm 1.14 {
1375     log_error("Close socket failed\n");
1376     }
1377 sysadm 1.1
1378 sysadm 1.93 if (res)
1379     {
1380     freeaddrinfo(res);
1381     }
1382    
1383 sysadm 1.97 return ret;
1384 sysadm 1.1 }
1385    
1386 sysadm 1.74 static int bbsnet_refresh()
1387 sysadm 1.1 {
1388 sysadm 1.14 clearscr();
1389 sysadm 1.84
1390     moveto(1, 1);
1391     prints(" ------------------------------------------------------------------------------ ");
1392 sysadm 1.20 for (int i = 2; i < 19; i++)
1393 sysadm 1.14 {
1394 sysadm 1.84 moveto(i, 1);
1395 sysadm 1.23 prints("|");
1396 sysadm 1.84 moveto(i, 80);
1397 sysadm 1.23 prints("|");
1398 sysadm 1.14 }
1399 sysadm 1.84 moveto(19, 1);
1400     prints("|------------------------------------------------------------------------------|");
1401     moveto(22, 1);
1402     prints(" ------------------------------------------------------------------------------ ");
1403     moveto(23, 1);
1404     prints(" [\033[1;32mCtrl+C\033[m]退出");
1405 sysadm 1.13
1406 sysadm 1.14 iflush();
1407 sysadm 1.1
1408 sysadm 1.14 return 0;
1409 sysadm 1.1 }
1410    
1411 sysadm 1.74 static int bbsnet_selchange()
1412 sysadm 1.1 {
1413 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
1414    
1415 sysadm 1.84 moveto(20, 1);
1416 sysadm 1.14 clrtoeol();
1417 sysadm 1.87 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",
1418     bbsnet_conf[i].org_name, 20 - str_length(bbsnet_conf[i].org_name, 1), "",
1419     bbsnet_conf[i].site_name, 20 - str_length(bbsnet_conf[i].site_name, 1), "",
1420     (bbsnet_conf[i].use_ssh ? "SSH" : "Telnet"));
1421 sysadm 1.84 moveto(20, 80);
1422 sysadm 1.23 prints("|");
1423 sysadm 1.84 moveto(21, 1);
1424 sysadm 1.14 clrtoeol();
1425 sysadm 1.93 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",
1426 sysadm 1.87 bbsnet_conf[i].host_name, bbsnet_conf[i].port, bbsnet_conf[i].charset);
1427 sysadm 1.84 moveto(21, 80);
1428 sysadm 1.23 prints("|");
1429 sysadm 1.14 iflush();
1430 sysadm 1.1
1431 sysadm 1.14 return 0;
1432 sysadm 1.1 }
1433    
1434 sysadm 1.83 int bbs_net()
1435 sysadm 1.1 {
1436 sysadm 1.98 int ch;
1437 sysadm 1.1
1438 sysadm 1.89 if (load_bbsnet_conf(CONF_BBSNET) < 0)
1439     {
1440     clearscr();
1441     moveto(1, 1);
1442     prints("加载穿梭配置失败！");
1443     press_any_key();
1444     return -1;
1445     }
1446 sysadm 1.1
1447 sysadm 1.14 bbsnet_refresh();
1448 sysadm 1.41 display_menu(&bbsnet_menu);
1449 sysadm 1.43 bbsnet_selchange();
1450 sysadm 1.14
1451 sysadm 1.26 while (!SYS_server_exit)
1452 sysadm 1.1 {
1453 sysadm 1.39 ch = igetch(100);
1454 sysadm 1.52
1455 sysadm 1.71 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
1456     {
1457     BBS_last_access_tm = time(NULL);
1458     }
1459 sysadm 1.64
1460 sysadm 1.14 switch (ch)
1461     {
1462 sysadm 1.47 case KEY_NULL: // broken pipe
1463 sysadm 1.95 log_debug("KEY_NULL\n");
1464 sysadm 1.40 goto cleanup;
1465 sysadm 1.14 case KEY_TIMEOUT:
1466 sysadm 1.78 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
1467 sysadm 1.14 {
1468 sysadm 1.64 log_error("User input timeout\n");
1469 sysadm 1.40 goto cleanup;
1470 sysadm 1.14 }
1471 sysadm 1.29 continue;
1472 sysadm 1.64 case KEY_ESC:
1473     case Ctrl('C'): // user cancel
1474     goto cleanup;
1475 sysadm 1.14 case CR:
1476 sysadm 1.98 if (bbsnet_connect(bbsnet_menu.menu_item_pos[0]) < 0)
1477     {
1478     log_debug("bbsnet_connect() error\n");
1479     }
1480 sysadm 1.84 // Force cleanup anything remaining in the output buffer
1481     clearscr();
1482     iflush();
1483     // Clear screen and redraw menu
1484 sysadm 1.14 bbsnet_refresh();
1485 sysadm 1.41 display_menu(&bbsnet_menu);
1486 sysadm 1.43 bbsnet_selchange();
1487 sysadm 1.14 break;
1488     case KEY_UP:
1489 sysadm 1.98 for (int i = 0; i < STATION_PER_LINE; i++)
1490 sysadm 1.20 {
1491 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
1492 sysadm 1.20 }
1493 sysadm 1.43 bbsnet_selchange();
1494 sysadm 1.14 break;
1495     case KEY_DOWN:
1496 sysadm 1.98 for (int i = 0; i < STATION_PER_LINE; i++)
1497 sysadm 1.20 {
1498 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
1499 sysadm 1.20 }
1500 sysadm 1.43 bbsnet_selchange();
1501 sysadm 1.14 break;
1502     case KEY_LEFT:
1503     menu_control(&bbsnet_menu, KEY_UP);
1504 sysadm 1.43 bbsnet_selchange();
1505 sysadm 1.14 break;
1506     case KEY_RIGHT:
1507     menu_control(&bbsnet_menu, KEY_DOWN);
1508 sysadm 1.43 bbsnet_selchange();
1509     break;
1510 sysadm 1.44 case KEY_HOME:
1511 sysadm 1.43 case KEY_PGUP:
1512     menu_control(&bbsnet_menu, KEY_PGUP);
1513     bbsnet_selchange();
1514 sysadm 1.14 break;
1515 sysadm 1.44 case KEY_END:
1516     case KEY_PGDN:
1517     menu_control(&bbsnet_menu, KEY_PGDN);
1518     bbsnet_selchange();
1519     break;
1520 sysadm 1.14 default:
1521     menu_control(&bbsnet_menu, ch);
1522 sysadm 1.43 bbsnet_selchange();
1523 sysadm 1.14 break;
1524     }
1525 sysadm 1.1 }
1526    
1527 sysadm 1.40 cleanup:
1528     unload_bbsnet_conf();
1529    
1530 sysadm 1.14 return 0;
1531 sysadm 1.1 }
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