/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.108 - (hide annotations)
Sat Dec 20 10:46:42 2025 UTC (2 months, 3 weeks ago) by sysadm
Branch: MAIN
Changes since 1.107: +1 -4 lines
Content type: text/x-csrc 
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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 sysadm 1.104 log_error("calloc(p_menu_pool) error");
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 sysadm 1.104 log_error("calloc(p_menu_item_pool) error");
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 1.104 log_error("Invalid port value %ld of menu item %d", 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 sysadm 1.104 log_error("get_menu_item_by_id(%d) return NULL pointer", 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 sysadm 1.97 int pos;
213 sysadm 1.27
214 sysadm 1.98 if (len < 4)
215 sysadm 1.89 {
216 sysadm 1.98 len = 4;
217 sysadm 1.89 }
218 sysadm 1.98 else if (len + 2 > LINE_BUFFER_LEN)
219 sysadm 1.27 {
220 sysadm 1.98 len = LINE_BUFFER_LEN - 3;
221 sysadm 1.27 }
222 sysadm 1.97 if (percent < 0)
223 sysadm 1.27 {
224 sysadm 1.97 percent = 0;
225 sysadm 1.27 }
226 sysadm 1.97 else if (percent > 100)
227 sysadm 1.27 {
228 sysadm 1.97 percent = 100;
229 sysadm 1.27 }
230 sysadm 1.14
231 sysadm 1.97 pos = len * percent / 100;
232    
233     line[0] = ' ';
234     for (int i = 1; i <= len; i++)
235     {
236     line[i] = '-';
237     }
238     line[len + 1] = ' ';
239     line[len + 2] = '\0';
240    
241     snprintf(buf, sizeof(buf), "%*s%3d%%%*s",
242     (len - 4) / 2, "", percent, (len - 4 + 1) / 2, "");
243    
244 sysadm 1.84 moveto(4, 1);
245 sysadm 1.97 prints("%s\r\n", line);
246 sysadm 1.108 prints("|\033[46m%.*s\033[44m%s\033[m|\r\n", pos, buf, buf + pos);
247 sysadm 1.97 prints("%s\r\n", line);
248 sysadm 1.14 iflush();
249 sysadm 1.1 }
250    
251 sysadm 1.107 static int connect_timeout(struct timespec *p_ts_begin, struct timespec *p_ts_now,
252 sysadm 1.105 int total_time_ms, int *p_progress_last, int bar_len)
253     {
254 sysadm 1.107 long duration_ms;
255 sysadm 1.105 int progress;
256    
257     if (clock_gettime(CLOCK_REALTIME, p_ts_now) == -1)
258     {
259     log_error("clock_gettime() error (%d)", errno);
260     return -1;
261     }
262    
263 sysadm 1.107 duration_ms = (p_ts_now->tv_sec - p_ts_begin->tv_sec) * 1000 +
264     (p_ts_now->tv_nsec - p_ts_begin->tv_nsec) / 1000 / 1000;
265    
266     if (duration_ms >= total_time_ms)
267 sysadm 1.105 {
268 sysadm 1.107 progress_bar(100, bar_len);
269     prints("\033[1;31m连接超时！\033[m\r\n");
270     press_any_key();
271    
272     return 1;
273 sysadm 1.105 }
274 sysadm 1.107
275     progress = (int)(duration_ms * 100 / total_time_ms) + 1;
276 sysadm 1.105
277     if (progress != *p_progress_last)
278     {
279     *p_progress_last = progress;
280 sysadm 1.107 progress_bar(progress, bar_len);
281 sysadm 1.105 }
282    
283     return 0;
284     }
285    
286 sysadm 1.74 static int bbsnet_connect(int n)
287 sysadm 1.1 {
288 sysadm 1.89 int sock = -1;
289 sysadm 1.97 int ret = 0;
290 sysadm 1.89 int loop;
291     int error;
292 sysadm 1.38 int sock_connected = 0;
293 sysadm 1.107 int ssh_connected = 0;
294 sysadm 1.89 int flags_sock = -1;
295     int flags_stdin = -1;
296     int flags_stdout = -1;
297 sysadm 1.14 struct sockaddr_in sin;
298 sysadm 1.36 char input_buf[LINE_BUFFER_LEN];
299     char output_buf[LINE_BUFFER_LEN];
300     int input_buf_len = 0;
301     int output_buf_len = 0;
302     int input_buf_offset = 0;
303     int output_buf_offset = 0;
304 sysadm 1.60 char input_conv[LINE_BUFFER_LEN * 2];
305     char output_conv[LINE_BUFFER_LEN * 2];
306     int input_conv_len = 0;
307     int output_conv_len = 0;
308     int input_conv_offset = 0;
309     int output_conv_offset = 0;
310 sysadm 1.89 iconv_t input_cd = (iconv_t)(-1);
311     iconv_t output_cd = (iconv_t)(-1);
312     char tocode[CHARSET_MAX_LEN + 20];
313 sysadm 1.82
314     #ifdef HAVE_SYS_EPOLL_H
315 sysadm 1.38 struct epoll_event ev, events[MAX_EVENTS];
316 sysadm 1.89 int epollfd = -1;
317 sysadm 1.82 #else
318     struct pollfd pfds[3];
319     #endif
320    
321     int nfds;
322 sysadm 1.38 int stdin_read_wait = 0;
323     int stdout_write_wait = 0;
324     int sock_read_wait = 0;
325     int sock_write_wait = 0;
326 sysadm 1.93 struct addrinfo hints, *res = NULL;
327 sysadm 1.31 int tos;
328 sysadm 1.93 char remote_addr[INET_ADDRSTRLEN];
329 sysadm 1.14 int remote_port;
330 sysadm 1.93 char local_addr[INET_ADDRSTRLEN];
331 sysadm 1.63 int local_port;
332     socklen_t sock_len;
333 sysadm 1.97 time_t t_begin, t_used;
334     struct timespec ts_begin, ts_now;
335 sysadm 1.105 int progress_last = 0;
336 sysadm 1.26 int ch;
337 sysadm 1.84 char remote_user[USERNAME_MAX_LEN + 1];
338     char remote_pass[PASSWORD_MAX_LEN + 1];
339 sysadm 1.97 ssh_session outbound_session = NULL;
340     ssh_channel outbound_channel = NULL;
341 sysadm 1.84 int ssh_process_config = 0;
342 sysadm 1.88 int ssh_log_level = SSH_LOG_NOLOG;
343 sysadm 1.14
344 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
345     {
346 sysadm 1.104 log_error("user_online_update(BBS_NET) error");
347 sysadm 1.53 }
348    
349 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
350     {
351     clearscr();
352    
353     if (!SSH_v2)
354     {
355     moveto(1, 1);
356     prints("只有在以SSH方式登陆本站时，才能使用SSH站点穿梭。");
357     press_any_key();
358     return 0;
359     }
360    
361     moveto(1, 1);
362 sysadm 1.86 prints("通过SSH方式连接[%s]...", bbsnet_conf[n].site_name);
363 sysadm 1.84 moveto(2, 1);
364     prints("请输入用户名: ");
365     iflush();
366     if (str_input(remote_user, sizeof(remote_user), DOECHO) < 0)
367     {
368     return -1;
369     }
370     if (remote_user[0] == '\0')
371     {
372     return 0;
373     }
374    
375     moveto(3, 1);
376     prints("请输入密码: ");
377     iflush();
378     if (str_input(remote_pass, sizeof(remote_pass), NOECHO) < 0)
379     {
380     return -1;
381     }
382     if (remote_pass[0] == '\0')
383     {
384     return 0;
385     }
386     }
387    
388 sysadm 1.14 clearscr();
389    
390 sysadm 1.84 moveto(1, 1);
391 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
392 sysadm 1.86 bbsnet_conf[n].site_name, bbsnet_conf[n].host_name);
393 sysadm 1.105 prints("\033[1;32m连接进行中，按\033[1;33mCtrl+C\033[1;32m中断。\033[m\r\n");
394     progress_bar(0, PROGRESS_BAR_LEN);
395    
396     if (clock_gettime(CLOCK_REALTIME, &ts_begin) == -1)
397     {
398     log_error("clock_gettime() error (%d)", errno);
399     ret = -1;
400     goto cleanup;
401     }
402     ts_now = ts_begin;
403 sysadm 1.14
404 sysadm 1.93 memset(&hints, 0, sizeof(hints));
405     hints.ai_family = AF_INET;
406     hints.ai_socktype = SOCK_STREAM;
407     hints.ai_protocol = IPPROTO_TCP;
408 sysadm 1.14
409 sysadm 1.93 if ((ret = getaddrinfo(BBS_address, NULL, &hints, &res)) != 0)
410 sysadm 1.1 {
411 sysadm 1.104 log_error("getaddrinfo() error (%d): %s", ret, gai_strerror(ret));
412 sysadm 1.97 ret = -1;
413 sysadm 1.89 goto cleanup;
414 sysadm 1.1 }
415 sysadm 1.14
416 sysadm 1.97 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), local_addr, sizeof(local_addr)) == NULL)
417 sysadm 1.93 {
418 sysadm 1.104 log_error("inet_ntop() error (%d)", errno);
419 sysadm 1.97 ret = -1;
420 sysadm 1.93 goto cleanup;
421     }
422     local_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
423 sysadm 1.14
424 sysadm 1.93 sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
425 sysadm 1.14 if (sock < 0)
426 sysadm 1.1 {
427 sysadm 1.104 log_error("socket() error (%d)", errno);
428 sysadm 1.97 ret = -1;
429 sysadm 1.93 goto cleanup;
430     }
431    
432     if (bind(sock, res->ai_addr, res->ai_addrlen) < 0)
433     {
434 sysadm 1.104 log_error("bind(%s:%u) error (%d)", local_addr, local_port, errno);
435 sysadm 1.97 ret = -1;
436 sysadm 1.89 goto cleanup;
437 sysadm 1.1 }
438    
439 sysadm 1.93 freeaddrinfo(res);
440     res = NULL;
441    
442     memset(&hints, 0, sizeof(hints));
443     hints.ai_family = AF_INET;
444     hints.ai_flags = AI_NUMERICSERV;
445     hints.ai_socktype = SOCK_STREAM;
446     hints.ai_protocol = IPPROTO_TCP;
447 sysadm 1.14
448 sysadm 1.93 if ((ret = getaddrinfo(bbsnet_conf[n].host_name, bbsnet_conf[n].port, &hints, &res)) != 0)
449 sysadm 1.14 {
450 sysadm 1.104 log_error("getaddrinfo() error (%d): %s", ret, gai_strerror(ret));
451 sysadm 1.93 prints("\033[1;31m查找主机名失败！\033[m\r\n");
452     press_any_key();
453 sysadm 1.97 ret = -1;
454 sysadm 1.89 goto cleanup;
455 sysadm 1.14 }
456 sysadm 1.1
457 sysadm 1.97 if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), remote_addr, sizeof(remote_addr)) == NULL)
458 sysadm 1.93 {
459 sysadm 1.104 log_error("inet_ntop() error (%d)", errno);
460 sysadm 1.97 ret = -1;
461 sysadm 1.93 goto cleanup;
462     }
463     remote_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
464 sysadm 1.14
465 sysadm 1.39 // Set socket as non-blocking
466 sysadm 1.89 if ((flags_sock = fcntl(sock, F_GETFL, 0)) == -1)
467     {
468 sysadm 1.104 log_error("fcntl(F_GETFL) error (%d)", errno);
469 sysadm 1.97 ret = -1;
470 sysadm 1.89 goto cleanup;
471     }
472     if ((fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK)) == -1)
473     {
474 sysadm 1.104 log_error("fcntl(F_SETFL) error (%d)", errno);
475 sysadm 1.97 ret = -1;
476 sysadm 1.89 goto cleanup;
477     }
478 sysadm 1.39
479     // Set STDIN/STDOUT as non-blocking
480 sysadm 1.89 if ((flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0)) == -1)
481     {
482 sysadm 1.104 log_error("fcntl(F_GETFL) error (%d)", errno);
483 sysadm 1.97 ret = -1;
484 sysadm 1.89 goto cleanup;
485     }
486     if ((flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0)) == -1)
487     {
488 sysadm 1.104 log_error("fcntl(F_GETFL) error (%d)", errno);
489 sysadm 1.97 ret = -1;
490 sysadm 1.89 goto cleanup;
491     }
492     if ((fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK)) == -1)
493     {
494 sysadm 1.104 log_error("fcntl(F_SETFL) error (%d)", errno);
495 sysadm 1.97 ret = -1;
496 sysadm 1.89 goto cleanup;
497     }
498     if ((fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK)) == -1)
499     {
500 sysadm 1.104 log_error("fcntl(F_SETFL) error (%d)", errno);
501 sysadm 1.97 ret = -1;
502 sysadm 1.89 goto cleanup;
503     }
504 sysadm 1.39
505 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
506 sysadm 1.38 epollfd = epoll_create1(0);
507     if (epollfd < 0)
508     {
509 sysadm 1.104 log_error("epoll_create1() error (%d)", errno);
510 sysadm 1.97 ret = -1;
511 sysadm 1.89 goto cleanup;
512 sysadm 1.38 }
513    
514 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
515 sysadm 1.38 ev.data.fd = sock;
516     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
517     {
518 sysadm 1.104 log_error("epoll_ctl(socket) error (%d)", errno);
519 sysadm 1.97 ret = -1;
520 sysadm 1.39 goto cleanup;
521 sysadm 1.38 }
522    
523 sysadm 1.59 ev.events = EPOLLIN | EPOLLET;
524 sysadm 1.38 ev.data.fd = STDIN_FILENO;
525     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
526     {
527 sysadm 1.104 log_error("epoll_ctl(STDIN_FILENO) error (%d)", errno);
528 sysadm 1.97 ret = -1;
529 sysadm 1.39 goto cleanup;
530 sysadm 1.38 }
531 sysadm 1.82 #endif
532 sysadm 1.38
533 sysadm 1.107 while (!SYS_server_exit &&
534     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
535 sysadm 1.29 {
536 sysadm 1.97 if ((ret = connect(sock, res->ai_addr, res->ai_addrlen)) == 0)
537     {
538     sock_connected = 1;
539     break;
540     }
541     else if (ret < 0)
542 sysadm 1.29 {
543 sysadm 1.38 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
544     {
545     // Use select / epoll to check writability of the socket,
546     // then use getsockopt to check the status of the socket.
547     // See man connect(2)
548     break;
549     }
550     else if (errno == EINTR)
551     {
552     }
553     else
554     {
555 sysadm 1.104 log_error("connect(socket) error (%d)", errno);
556 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
557 sysadm 1.38 press_any_key();
558 sysadm 1.97 ret = -1;
559 sysadm 1.39 goto cleanup;
560 sysadm 1.38 }
561 sysadm 1.29 }
562     }
563    
564 sysadm 1.107 while (!SYS_server_exit && !sock_connected &&
565     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
566 sysadm 1.1 {
567 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
568 sysadm 1.97 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
569 sysadm 1.82 ret = nfds;
570     #else
571     pfds[0].fd = sock;
572     pfds[0].events = POLLOUT;
573     pfds[1].fd = STDIN_FILENO;
574     pfds[1].events = POLLIN;
575     nfds = 2;
576 sysadm 1.97 ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
577 sysadm 1.82 #endif
578 sysadm 1.29
579 sysadm 1.82 if (ret < 0)
580 sysadm 1.20 {
581 sysadm 1.29 if (errno != EINTR)
582     {
583 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
584 sysadm 1.104 log_error("epoll_wait() error (%d)", errno);
585 sysadm 1.82 #else
586 sysadm 1.104 log_error("poll() error (%d)", errno);
587 sysadm 1.82 #endif
588 sysadm 1.39 break;
589 sysadm 1.29 }
590 sysadm 1.20 }
591 sysadm 1.82 else if (ret == 0) // timeout
592 sysadm 1.38 {
593     }
594     else // ret > 0
595 sysadm 1.14 {
596 sysadm 1.38 for (int i = 0; i < nfds; i++)
597 sysadm 1.29 {
598 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
599 sysadm 1.38 if (events[i].data.fd == sock)
600 sysadm 1.82 #else
601     if (pfds[i].fd == sock && (pfds[i].revents & POLLOUT))
602     #endif
603 sysadm 1.38 {
604 sysadm 1.89 socklen_t len = sizeof(error);
605     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &len) < 0)
606 sysadm 1.38 {
607 sysadm 1.104 log_error("getsockopt() error (%d) !", errno);
608 sysadm 1.97 ret = -1;
609 sysadm 1.39 goto cleanup;
610 sysadm 1.38 }
611     if (error == 0)
612     {
613     sock_connected = 1;
614 sysadm 1.97 break;
615 sysadm 1.38 }
616     }
617 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
618 sysadm 1.38 else if (events[i].data.fd == STDIN_FILENO)
619 sysadm 1.82 #else
620     else if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
621     #endif
622 sysadm 1.38 {
623 sysadm 1.84 do
624     {
625     ch = igetch(0);
626     } while (ch == 0);
627 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
628 sysadm 1.38 {
629 sysadm 1.97 ret = 0;
630 sysadm 1.39 goto cleanup;
631 sysadm 1.38 }
632     }
633 sysadm 1.29 }
634 sysadm 1.14 }
635 sysadm 1.38 }
636     if (!sock_connected)
637 sysadm 1.12 {
638 sysadm 1.97 ret = -1;
639 sysadm 1.39 goto cleanup;
640 sysadm 1.12 }
641 sysadm 1.29
642 sysadm 1.31 tos = IPTOS_LOWDELAY;
643     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
644     {
645 sysadm 1.104 log_error("setsockopt IP_TOS=%d error (%d)", tos, errno);
646 sysadm 1.31 }
647 sysadm 1.14
648 sysadm 1.63 sock_len = sizeof(sin);
649     if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
650     {
651     log_error("getsockname() error: %d", errno);
652 sysadm 1.97 ret = -1;
653 sysadm 1.63 goto cleanup;
654     }
655    
656 sysadm 1.97 if (inet_ntop(AF_INET, &(sin.sin_addr), local_addr, sizeof(local_addr)) == NULL)
657     {
658 sysadm 1.104 log_error("inet_ntop() error (%d)", errno);
659 sysadm 1.97 ret = -1;
660     goto cleanup;
661     }
662 sysadm 1.63 local_port = ntohs(sin.sin_port);
663    
664 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
665     {
666 sysadm 1.97 outbound_session = ssh_new();
667     if (outbound_session == NULL)
668 sysadm 1.84 {
669 sysadm 1.104 log_error("ssh_new() error");
670 sysadm 1.97 ret = -1;
671 sysadm 1.84 goto cleanup;
672     }
673    
674 sysadm 1.97 if (ssh_options_set(outbound_session, SSH_OPTIONS_FD, &sock) < 0 ||
675     ssh_options_set(outbound_session, SSH_OPTIONS_PROCESS_CONFIG, &ssh_process_config) < 0 ||
676     ssh_options_set(outbound_session, SSH_OPTIONS_KNOWNHOSTS, SSH_KNOWN_HOSTS_FILE) < 0 ||
677     ssh_options_set(outbound_session, SSH_OPTIONS_HOST, bbsnet_conf[n].host_name) < 0 ||
678     ssh_options_set(outbound_session, SSH_OPTIONS_USER, remote_user) < 0 ||
679     ssh_options_set(outbound_session, SSH_OPTIONS_HOSTKEYS, "+ssh-ed25519,ecdsa-sha2-nistp256,ssh-rsa") < 0 ||
680     ssh_options_set(outbound_session, SSH_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
681 sysadm 1.84 {
682 sysadm 1.104 log_error("Error setting SSH options: %s", ssh_get_error(outbound_session));
683 sysadm 1.97 ret = -1;
684 sysadm 1.84 goto cleanup;
685     }
686    
687 sysadm 1.97 ssh_set_blocking(outbound_session, 0);
688 sysadm 1.85
689 sysadm 1.107 ssh_connected = 0;
690     while (!SYS_server_exit &&
691     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
692 sysadm 1.84 {
693 sysadm 1.97 ret = ssh_connect(outbound_session);
694 sysadm 1.84 if (ret == SSH_OK)
695     {
696 sysadm 1.107 ssh_connected = 1;
697 sysadm 1.84 break;
698     }
699 sysadm 1.90 else if (ret == SSH_AGAIN)
700     {
701 sysadm 1.104 // log_debug("ssh_connect() error: SSH_AGAIN");
702 sysadm 1.90 }
703     else // if (ret == SSH_ERROR)
704 sysadm 1.84 {
705 sysadm 1.104 log_error("ssh_connect() error: SSH_ERROR");
706 sysadm 1.97 ret = -1;
707 sysadm 1.84 goto cleanup;
708     }
709     }
710 sysadm 1.107 if (!ssh_connected)
711 sysadm 1.90 {
712 sysadm 1.97 ret = -1;
713 sysadm 1.90 goto cleanup;
714     }
715 sysadm 1.84
716 sysadm 1.97 ret = ssh_session_is_known_server(outbound_session);
717 sysadm 1.85 switch (ret)
718     {
719     case SSH_KNOWN_HOSTS_NOT_FOUND:
720     case SSH_KNOWN_HOSTS_UNKNOWN:
721 sysadm 1.97 if (ssh_session_update_known_hosts(outbound_session) != SSH_OK)
722 sysadm 1.85 {
723 sysadm 1.104 log_error("ssh_session_update_known_hosts(%s) error", bbsnet_conf[n].host_name);
724 sysadm 1.90 prints("\033[1;31m无法添加服务器证书\033[m\r\n");
725 sysadm 1.85 press_any_key();
726 sysadm 1.97 ret = -1;
727 sysadm 1.85 goto cleanup;
728     }
729 sysadm 1.104 log_common("SSH key of (%s) is added into %s", bbsnet_conf[n].host_name, SSH_KNOWN_HOSTS_FILE);
730 sysadm 1.85 case SSH_KNOWN_HOSTS_OK:
731     break;
732     case SSH_KNOWN_HOSTS_CHANGED:
733     case SSH_KNOWN_HOSTS_OTHER:
734 sysadm 1.104 log_error("ssh_session_is_known_server(%s) error: %d", bbsnet_conf[n].host_name, ret);
735 sysadm 1.90 prints("\033[1;31m服务器证书已变更\033[m\r\n");
736 sysadm 1.85 press_any_key();
737 sysadm 1.97 ret = -1;
738 sysadm 1.85 goto cleanup;
739     }
740 sysadm 1.84
741 sysadm 1.107 ssh_connected = 0;
742     while (!SYS_server_exit &&
743     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
744 sysadm 1.84 {
745 sysadm 1.97 ret = ssh_userauth_password(outbound_session, NULL, remote_pass);
746 sysadm 1.84 if (ret == SSH_AUTH_SUCCESS)
747     {
748 sysadm 1.107 ssh_connected = 1;
749 sysadm 1.84 break;
750     }
751     else if (ret == SSH_AUTH_AGAIN)
752     {
753 sysadm 1.104 // log_debug("ssh_userauth_password() error: SSH_AUTH_AGAIN");
754 sysadm 1.84 }
755     else if (ret == SSH_AUTH_ERROR)
756     {
757 sysadm 1.104 log_error("ssh_userauth_password() error: SSH_AUTH_ERROR");
758 sysadm 1.97 ret = -1;
759 sysadm 1.84 goto cleanup;
760     }
761     else // if (ret == SSH_AUTH_DENIED)
762     {
763 sysadm 1.105 log_debug("ssh_userauth_password() error: SSH_AUTH_DENIED");
764 sysadm 1.84 prints("\033[1;31m身份验证失败！\033[m\r\n");
765 sysadm 1.90 press_any_key();
766 sysadm 1.105 ret = 0;
767     goto cleanup;
768     }
769 sysadm 1.84 }
770 sysadm 1.107 if (!ssh_connected)
771 sysadm 1.90 {
772 sysadm 1.97 ret = -1;
773 sysadm 1.90 goto cleanup;
774     }
775 sysadm 1.84
776 sysadm 1.97 outbound_channel = ssh_channel_new(outbound_session);
777     if (outbound_channel == NULL)
778 sysadm 1.84 {
779 sysadm 1.104 log_error("ssh_channel_new() error");
780 sysadm 1.97 ret = -1;
781 sysadm 1.84 goto cleanup;
782     }
783    
784 sysadm 1.107 ssh_connected = 0;
785     while (!SYS_server_exit &&
786     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
787 sysadm 1.84 {
788 sysadm 1.97 ret = ssh_channel_open_session(outbound_channel);
789 sysadm 1.84 if (ret == SSH_OK)
790     {
791 sysadm 1.107 ssh_connected = 1;
792 sysadm 1.84 break;
793     }
794 sysadm 1.90 else if (ret == SSH_AGAIN)
795     {
796 sysadm 1.104 // log_debug("ssh_channel_open_session() error: SSH_AGAIN");
797 sysadm 1.90 }
798     else // if (ret == SSH_ERROR)
799 sysadm 1.84 {
800 sysadm 1.104 log_error("ssh_channel_open_session() error: SSH_ERROR");
801 sysadm 1.97 ret = -1;
802 sysadm 1.84 goto cleanup;
803     }
804     }
805 sysadm 1.107 if (!ssh_connected)
806 sysadm 1.90 {
807 sysadm 1.97 ret = -1;
808 sysadm 1.90 goto cleanup;
809     }
810 sysadm 1.84
811 sysadm 1.107 ssh_connected = 0;
812     while (!SYS_server_exit &&
813     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
814 sysadm 1.84 {
815 sysadm 1.97 ret = ssh_channel_request_pty(outbound_channel);
816 sysadm 1.84 if (ret == SSH_OK)
817     {
818 sysadm 1.107 ssh_connected = 1;
819 sysadm 1.84 break;
820     }
821 sysadm 1.90 else if (ret == SSH_AGAIN)
822     {
823 sysadm 1.104 // log_debug("ssh_channel_request_pty() error: SSH_AGAIN");
824 sysadm 1.90 }
825     else // if (ret == SSH_ERROR)
826 sysadm 1.84 {
827 sysadm 1.104 log_error("ssh_channel_request_pty() error: SSH_ERROR");
828 sysadm 1.97 ret = -1;
829 sysadm 1.84 goto cleanup;
830     }
831     }
832 sysadm 1.107 if (!ssh_connected)
833 sysadm 1.90 {
834 sysadm 1.97 ret = -1;
835 sysadm 1.90 goto cleanup;
836     }
837 sysadm 1.84
838 sysadm 1.107 ssh_connected = 0;
839     while (!SYS_server_exit &&
840     !connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
841 sysadm 1.84 {
842 sysadm 1.97 ret = ssh_channel_request_shell(outbound_channel);
843 sysadm 1.84 if (ret == SSH_OK)
844     {
845 sysadm 1.107 ssh_connected = 1;
846 sysadm 1.84 break;
847     }
848 sysadm 1.90 else if (ret == SSH_AGAIN)
849     {
850 sysadm 1.104 // log_debug("ssh_channel_request_shell() error: SSH_AGAIN");
851 sysadm 1.90 }
852     else // if (ret == SSH_ERROR)
853 sysadm 1.84 {
854 sysadm 1.104 log_error("ssh_channel_request_shell() error: SSH_ERROR");
855 sysadm 1.97 ret = -1;
856 sysadm 1.84 goto cleanup;
857     }
858     }
859 sysadm 1.107 if (!ssh_connected)
860 sysadm 1.89 {
861 sysadm 1.97 ret = -1;
862 sysadm 1.89 goto cleanup;
863     }
864 sysadm 1.84 }
865    
866 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
867 sysadm 1.33 iflush();
868 sysadm 1.104 log_common("BBSNET connect to %s:%d from %s:%d by [%s]",
869 sysadm 1.63 remote_addr, remote_port, local_addr, local_port, BBS_username);
870 sysadm 1.14
871 sysadm 1.71 snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset,
872     (strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE"));
873 sysadm 1.68 input_cd = iconv_open(tocode, stdio_charset);
874 sysadm 1.60 if (input_cd == (iconv_t)(-1))
875     {
876 sysadm 1.104 log_error("iconv_open(%s->%s) error: %d", stdio_charset, tocode, errno);
877 sysadm 1.97 ret = -1;
878 sysadm 1.60 goto cleanup;
879     }
880 sysadm 1.68
881 sysadm 1.71 snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset,
882     (strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT"));
883 sysadm 1.70 output_cd = iconv_open(tocode, bbsnet_conf[n].charset);
884 sysadm 1.67 if (output_cd == (iconv_t)(-1))
885 sysadm 1.60 {
886 sysadm 1.104 log_error("iconv_open(%s->%s) error: %d", bbsnet_conf[n].charset, tocode, errno);
887 sysadm 1.97 ret = -1;
888 sysadm 1.60 goto cleanup;
889     }
890    
891 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
892 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
893     ev.data.fd = sock;
894     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
895     {
896 sysadm 1.104 log_error("epoll_ctl(socket) error (%d)", errno);
897 sysadm 1.97 ret = -1;
898 sysadm 1.39 goto cleanup;
899 sysadm 1.38 }
900    
901 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
902 sysadm 1.38 ev.data.fd = STDOUT_FILENO;
903     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
904     {
905 sysadm 1.104 log_error("epoll_ctl(STDOUT_FILENO) error (%d)", errno);
906 sysadm 1.97 ret = -1;
907 sysadm 1.39 goto cleanup;
908 sysadm 1.38 }
909 sysadm 1.82 #endif
910 sysadm 1.38
911 sysadm 1.97 BBS_last_access_tm = t_begin = time(NULL);
912 sysadm 1.14 loop = 1;
913    
914 sysadm 1.26 while (loop && !SYS_server_exit)
915 sysadm 1.12 {
916 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
917     {
918 sysadm 1.104 log_debug("SSH channel is closed");
919 sysadm 1.47 loop = 0;
920     break;
921     }
922    
923 sysadm 1.97 if (bbsnet_conf[n].use_ssh && ssh_channel_is_closed(outbound_channel))
924 sysadm 1.84 {
925 sysadm 1.104 log_debug("Outbound channel is closed");
926 sysadm 1.84 loop = 0;
927     break;
928     }
929    
930 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
931 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
932 sysadm 1.82 ret = nfds;
933     #else
934     pfds[0].fd = STDIN_FILENO;
935     pfds[0].events = POLLIN;
936     pfds[1].fd = sock;
937     pfds[1].events = POLLIN | POLLOUT;
938     pfds[2].fd = STDOUT_FILENO;
939     pfds[2].events = POLLOUT;
940     nfds = 3;
941     ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
942     #endif
943 sysadm 1.33
944 sysadm 1.82 if (ret < 0)
945 sysadm 1.14 {
946 sysadm 1.38 if (errno != EINTR)
947 sysadm 1.14 {
948 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
949 sysadm 1.104 log_error("epoll_wait() error (%d)", errno);
950 sysadm 1.82 #else
951 sysadm 1.104 log_error("poll() error (%d)", errno);
952 sysadm 1.82 #endif
953 sysadm 1.38 break;
954 sysadm 1.14 }
955 sysadm 1.38 continue;
956 sysadm 1.14 }
957 sysadm 1.82 else if (ret == 0) // timeout
958 sysadm 1.1 {
959 sysadm 1.78 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
960 sysadm 1.28 {
961 sysadm 1.104 log_debug("User input timeout");
962 sysadm 1.38 break;
963 sysadm 1.28 }
964 sysadm 1.1 }
965 sysadm 1.38
966     for (int i = 0; i < nfds; i++)
967 sysadm 1.1 {
968 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
969 sysadm 1.96 if (events[i].events & (EPOLLHUP | EPOLLERR))
970 sysadm 1.94 #else
971 sysadm 1.96 if (pfds[i].revents & (POLLHUP | POLLERR))
972 sysadm 1.94 #endif
973     {
974     #ifdef HAVE_SYS_EPOLL_H
975 sysadm 1.104 log_debug("FD (%d) error events (%d)", events[i].data.fd, events[i].events);
976 sysadm 1.94 #else
977 sysadm 1.104 log_debug("FD (%d) error events (%d)", pfds[i].fd, pfds[i].revents);
978 sysadm 1.94 #endif
979     loop = 0;
980     break;
981     }
982    
983     #ifdef HAVE_SYS_EPOLL_H
984     if (events[i].data.fd == STDIN_FILENO && (events[i].events & EPOLLIN))
985 sysadm 1.82 #else
986     if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
987     #endif
988 sysadm 1.14 {
989 sysadm 1.38 stdin_read_wait = 1;
990 sysadm 1.59 }
991    
992 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
993 sysadm 1.59 if (events[i].data.fd == sock)
994 sysadm 1.82 #else
995     if (pfds[i].fd == sock)
996     #endif
997 sysadm 1.59 {
998 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
999 sysadm 1.59 if (events[i].events & EPOLLIN)
1000 sysadm 1.82 #else
1001     if (pfds[i].revents & POLLIN)
1002     #endif
1003 sysadm 1.59 {
1004     sock_read_wait = 1;
1005     }
1006 sysadm 1.82
1007     #ifdef HAVE_SYS_EPOLL_H
1008 sysadm 1.59 if (events[i].events & EPOLLOUT)
1009 sysadm 1.82 #else
1010     if (pfds[i].revents & POLLOUT)
1011     #endif
1012 sysadm 1.59 {
1013     sock_write_wait = 1;
1014     }
1015     }
1016    
1017 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
1018 sysadm 1.94 if (events[i].data.fd == STDOUT_FILENO && (events[i].events & EPOLLOUT))
1019 sysadm 1.82 #else
1020     if (pfds[i].fd == STDOUT_FILENO && (pfds[i].revents & POLLOUT))
1021 sysadm 1.84 #endif
1022 sysadm 1.59 {
1023     stdout_write_wait = 1;
1024     }
1025     }
1026    
1027     if (stdin_read_wait)
1028     {
1029     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
1030     {
1031     if (SSH_v2)
1032 sysadm 1.33 {
1033 sysadm 1.59 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
1034     if (ret == SSH_ERROR)
1035 sysadm 1.47 {
1036 sysadm 1.104 log_debug("ssh_channel_read_nonblocking() error: %s", ssh_get_error(SSH_session));
1037 sysadm 1.59 loop = 0;
1038     break;
1039 sysadm 1.47 }
1040 sysadm 1.59 else if (ret == SSH_EOF)
1041 sysadm 1.47 {
1042 sysadm 1.59 stdin_read_wait = 0;
1043     loop = 0;
1044     break;
1045 sysadm 1.47 }
1046 sysadm 1.59 else if (ret == 0)
1047 sysadm 1.33 {
1048 sysadm 1.72 // Send NO-OP to remote server
1049     input_buf[input_buf_len] = '\0';
1050     input_buf_len++;
1051 sysadm 1.97
1052 sysadm 1.73 BBS_last_access_tm = time(NULL);
1053 sysadm 1.59 stdin_read_wait = 0;
1054     break; // Check whether channel is still open
1055 sysadm 1.38 }
1056 sysadm 1.59 }
1057     else
1058     {
1059     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
1060     }
1061     if (ret < 0)
1062     {
1063     if (errno == EAGAIN || errno == EWOULDBLOCK)
1064 sysadm 1.38 {
1065     stdin_read_wait = 0;
1066     break;
1067     }
1068 sysadm 1.59 else if (errno == EINTR)
1069     {
1070     continue;
1071     }
1072 sysadm 1.38 else
1073     {
1074 sysadm 1.104 log_error("read(STDIN) error (%d)", errno);
1075 sysadm 1.59 loop = 0;
1076     break;
1077     }
1078     }
1079     else if (ret == 0) // broken pipe
1080     {
1081 sysadm 1.104 log_debug("read(STDIN) EOF");
1082 sysadm 1.59 stdin_read_wait = 0;
1083     loop = 0;
1084     break;
1085     }
1086     else
1087     {
1088     input_buf_len += ret;
1089     BBS_last_access_tm = time(NULL);
1090 sysadm 1.58
1091 sysadm 1.59 // Refresh current action while user input
1092     if (user_online_update("BBS_NET") < 0)
1093     {
1094 sysadm 1.104 log_error("user_online_update(BBS_NET) error");
1095 sysadm 1.59 }
1096 sysadm 1.58
1097 sysadm 1.59 continue;
1098 sysadm 1.33 }
1099 sysadm 1.36 }
1100 sysadm 1.59 }
1101 sysadm 1.29
1102 sysadm 1.59 if (sock_write_wait)
1103     {
1104 sysadm 1.60 if (input_buf_offset < input_buf_len)
1105 sysadm 1.36 {
1106 sysadm 1.72 // For debug
1107     #ifdef _DEBUG
1108     for (int j = input_buf_offset; j < input_buf_len; j++)
1109     {
1110 sysadm 1.106 log_debug("input: <--[%u]", (unsigned char)(input_buf[j]));
1111 sysadm 1.72 }
1112     #endif
1113    
1114 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);
1115 sysadm 1.60 if (ret < 0)
1116     {
1117 sysadm 1.104 log_error("io_buf_conv(input, %d, %d, %d) error", input_buf_len, input_buf_offset, input_conv_len);
1118 sysadm 1.71 input_buf_len = input_buf_offset; // Discard invalid sequence
1119 sysadm 1.60 }
1120 sysadm 1.72
1121     // For debug
1122     #ifdef _DEBUG
1123     for (int j = input_conv_offset; j < input_conv_len; j++)
1124     {
1125 sysadm 1.106 log_debug("input_conv: <--[%u]", (unsigned char)(input_conv[j]));
1126 sysadm 1.72 }
1127     #endif
1128 sysadm 1.60 }
1129    
1130     while (input_conv_offset < input_conv_len && !SYS_server_exit)
1131     {
1132 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1133     {
1134 sysadm 1.97 ret = ssh_channel_write(outbound_channel, input_conv + input_conv_offset, (uint32_t)(input_conv_len - input_conv_offset));
1135 sysadm 1.84 if (ret == SSH_ERROR)
1136     {
1137 sysadm 1.104 log_debug("ssh_channel_write() error: %s", ssh_get_error(outbound_session));
1138 sysadm 1.84 loop = 0;
1139     break;
1140     }
1141     }
1142     else
1143     {
1144     ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
1145     }
1146 sysadm 1.59 if (ret < 0)
1147 sysadm 1.36 {
1148 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
1149 sysadm 1.36 {
1150 sysadm 1.59 sock_write_wait = 0;
1151     break;
1152 sysadm 1.38 }
1153 sysadm 1.59 else if (errno == EINTR)
1154 sysadm 1.38 {
1155 sysadm 1.59 continue;
1156     }
1157     else
1158     {
1159 sysadm 1.104 log_debug("write(socket) error (%d)", errno);
1160 sysadm 1.36 loop = 0;
1161 sysadm 1.38 break;
1162     }
1163 sysadm 1.59 }
1164     else if (ret == 0) // broken pipe
1165     {
1166 sysadm 1.104 log_debug("write(socket) EOF");
1167 sysadm 1.59 sock_write_wait = 0;
1168     loop = 0;
1169     break;
1170     }
1171     else
1172     {
1173 sysadm 1.60 input_conv_offset += ret;
1174     if (input_conv_offset >= input_conv_len) // Output buffer complete
1175 sysadm 1.38 {
1176 sysadm 1.60 input_conv_offset = 0;
1177     input_conv_len = 0;
1178 sysadm 1.59 break;
1179 sysadm 1.36 }
1180 sysadm 1.59 continue;
1181 sysadm 1.36 }
1182 sysadm 1.14 }
1183 sysadm 1.59 }
1184 sysadm 1.36
1185 sysadm 1.59 if (sock_read_wait)
1186     {
1187     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
1188 sysadm 1.14 {
1189 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1190     {
1191 sysadm 1.97 ret = ssh_channel_read_nonblocking(outbound_channel, output_buf + output_buf_len,
1192 sysadm 1.84 (uint32_t)(sizeof(output_buf) - (size_t)output_buf_len), 0);
1193     if (ret == SSH_ERROR)
1194     {
1195 sysadm 1.104 log_debug("ssh_channel_read_nonblocking() error: %s", ssh_get_error(outbound_session));
1196 sysadm 1.84 loop = 0;
1197     break;
1198     }
1199     else if (ret == SSH_EOF)
1200     {
1201     sock_read_wait = 0;
1202     loop = 0;
1203     break;
1204     }
1205     else if (ret == 0)
1206     {
1207     sock_read_wait = 0;
1208     break;
1209     }
1210     }
1211     else
1212     {
1213     ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
1214     }
1215 sysadm 1.59 if (ret < 0)
1216 sysadm 1.14 {
1217 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
1218 sysadm 1.38 {
1219 sysadm 1.59 sock_read_wait = 0;
1220     break;
1221 sysadm 1.38 }
1222 sysadm 1.59 else if (errno == EINTR)
1223 sysadm 1.33 {
1224 sysadm 1.59 continue;
1225 sysadm 1.38 }
1226     else
1227     {
1228 sysadm 1.104 log_debug("read(socket) error (%d)", errno);
1229 sysadm 1.59 loop = 0;
1230     break;
1231 sysadm 1.33 }
1232     }
1233 sysadm 1.59 else if (ret == 0) // broken pipe
1234     {
1235 sysadm 1.104 log_debug("read(socket) EOF");
1236 sysadm 1.59 sock_read_wait = 0;
1237     loop = 0;
1238     break;
1239     }
1240     else
1241     {
1242     output_buf_len += ret;
1243     continue;
1244     }
1245 sysadm 1.36 }
1246 sysadm 1.59 }
1247 sysadm 1.36
1248 sysadm 1.59 if (stdout_write_wait)
1249     {
1250 sysadm 1.60 if (output_buf_offset < output_buf_len)
1251     {
1252 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);
1253 sysadm 1.60 if (ret < 0)
1254     {
1255 sysadm 1.104 log_error("io_buf_conv(output, %d, %d, %d) error", output_buf_len, output_buf_offset, output_conv_len);
1256 sysadm 1.71 output_buf_len = output_buf_offset; // Discard invalid sequence
1257 sysadm 1.60 }
1258     }
1259    
1260     while (output_conv_offset < output_conv_len && !SYS_server_exit)
1261 sysadm 1.36 {
1262 sysadm 1.59 if (SSH_v2)
1263 sysadm 1.36 {
1264 sysadm 1.60 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
1265 sysadm 1.59 if (ret == SSH_ERROR)
1266 sysadm 1.47 {
1267 sysadm 1.104 log_debug("ssh_channel_write() error: %s", ssh_get_error(SSH_session));
1268 sysadm 1.59 loop = 0;
1269     break;
1270 sysadm 1.47 }
1271 sysadm 1.59 }
1272     else
1273     {
1274 sysadm 1.60 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
1275 sysadm 1.59 }
1276     if (ret < 0)
1277     {
1278     if (errno == EAGAIN || errno == EWOULDBLOCK)
1279 sysadm 1.47 {
1280 sysadm 1.59 stdout_write_wait = 0;
1281     break;
1282 sysadm 1.47 }
1283 sysadm 1.59 else if (errno == EINTR)
1284 sysadm 1.38 {
1285 sysadm 1.59 continue;
1286 sysadm 1.38 }
1287 sysadm 1.59 else
1288 sysadm 1.33 {
1289 sysadm 1.104 log_debug("write(STDOUT) error (%d)", errno);
1290 sysadm 1.36 loop = 0;
1291 sysadm 1.38 break;
1292     }
1293 sysadm 1.59 }
1294     else if (ret == 0) // broken pipe
1295     {
1296 sysadm 1.104 log_debug("write(STDOUT) EOF");
1297 sysadm 1.59 stdout_write_wait = 0;
1298     loop = 0;
1299     break;
1300     }
1301     else
1302     {
1303 sysadm 1.60 output_conv_offset += ret;
1304     if (output_conv_offset >= output_conv_len) // Output buffer complete
1305 sysadm 1.38 {
1306 sysadm 1.60 output_conv_offset = 0;
1307     output_conv_len = 0;
1308 sysadm 1.59 break;
1309 sysadm 1.36 }
1310 sysadm 1.59 continue;
1311 sysadm 1.36 }
1312 sysadm 1.14 }
1313 sysadm 1.1 }
1314     }
1315    
1316 sysadm 1.97 ret = 1; // Normal disconnect
1317     BBS_last_access_tm = time(NULL);
1318     t_used = BBS_last_access_tm - t_begin;
1319 sysadm 1.104 log_common("BBSNET disconnect, %ld days %ld hours %ld minutes %ld seconds used",
1320 sysadm 1.97 t_used / 86400, t_used % 86400 / 3600, t_used % 3600 / 60, t_used % 60);
1321    
1322 sysadm 1.89 cleanup:
1323 sysadm 1.97 // Clear sensitive data
1324     memset(remote_pass, 0, sizeof(remote_pass));
1325     memset(remote_user, 0, sizeof(remote_user));
1326    
1327 sysadm 1.107 if (input_cd != (iconv_t)(-1) && iconv_close(input_cd) < 0)
1328 sysadm 1.89 {
1329 sysadm 1.107 log_error("iconv_close(input) error (%d)", errno);
1330 sysadm 1.89 }
1331 sysadm 1.107 if (output_cd != (iconv_t)(-1) && iconv_close(output_cd) < 0)
1332 sysadm 1.89 {
1333 sysadm 1.107 log_error("iconv_close(output) error (%d)", errno);
1334 sysadm 1.89 }
1335 sysadm 1.60
1336 sysadm 1.82 #ifdef HAVE_SYS_EPOLL_H
1337 sysadm 1.89 if (epollfd != -1 && close(epollfd) < 0)
1338 sysadm 1.39 {
1339 sysadm 1.104 log_error("close(epoll) error (%d)");
1340 sysadm 1.39 }
1341 sysadm 1.82 #endif
1342 sysadm 1.39
1343 sysadm 1.84 if (bbsnet_conf[n].use_ssh)
1344     {
1345 sysadm 1.97 if (outbound_channel != NULL)
1346 sysadm 1.89 {
1347 sysadm 1.97 ssh_channel_send_eof(outbound_channel);
1348     ssh_channel_close(outbound_channel);
1349     ssh_channel_free(outbound_channel);
1350 sysadm 1.89 }
1351 sysadm 1.97 if (outbound_session != NULL)
1352 sysadm 1.89 {
1353 sysadm 1.97 ssh_disconnect(outbound_session);
1354     ssh_free(outbound_session);
1355 sysadm 1.89 }
1356 sysadm 1.84 }
1357    
1358 sysadm 1.36 // Restore STDIN/STDOUT flags
1359 sysadm 1.90 if (flags_stdin != -1 && fcntl(STDIN_FILENO, F_SETFL, flags_stdin) == -1)
1360 sysadm 1.89 {
1361 sysadm 1.104 log_error("fcntl(F_SETFL) error (%d)", errno);
1362 sysadm 1.89 }
1363     if (flags_stdout != -1 && fcntl(STDOUT_FILENO, F_SETFL, flags_stdout) == -1)
1364     {
1365 sysadm 1.104 log_error("fcntl(F_SETFL) error (%d)", errno);
1366 sysadm 1.89 }
1367 sysadm 1.36
1368 sysadm 1.107 if (sock != -1)
1369 sysadm 1.14 {
1370 sysadm 1.107 close(sock);
1371 sysadm 1.14 }
1372 sysadm 1.1
1373 sysadm 1.93 if (res)
1374     {
1375     freeaddrinfo(res);
1376     }
1377    
1378 sysadm 1.97 return ret;
1379 sysadm 1.1 }
1380    
1381 sysadm 1.74 static int bbsnet_refresh()
1382 sysadm 1.1 {
1383 sysadm 1.14 clearscr();
1384 sysadm 1.84
1385     moveto(1, 1);
1386     prints(" ------------------------------------------------------------------------------ ");
1387 sysadm 1.20 for (int i = 2; i < 19; i++)
1388 sysadm 1.14 {
1389 sysadm 1.84 moveto(i, 1);
1390 sysadm 1.23 prints("|");
1391 sysadm 1.84 moveto(i, 80);
1392 sysadm 1.23 prints("|");
1393 sysadm 1.14 }
1394 sysadm 1.84 moveto(19, 1);
1395     prints("|------------------------------------------------------------------------------|");
1396     moveto(22, 1);
1397     prints(" ------------------------------------------------------------------------------ ");
1398     moveto(23, 1);
1399     prints(" [\033[1;32mCtrl+C\033[m]退出");
1400 sysadm 1.13
1401 sysadm 1.14 iflush();
1402 sysadm 1.1
1403 sysadm 1.14 return 0;
1404 sysadm 1.1 }
1405    
1406 sysadm 1.74 static int bbsnet_selchange()
1407 sysadm 1.1 {
1408 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
1409    
1410 sysadm 1.84 moveto(20, 1);
1411 sysadm 1.14 clrtoeol();
1412 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",
1413     bbsnet_conf[i].org_name, 20 - str_length(bbsnet_conf[i].org_name, 1), "",
1414     bbsnet_conf[i].site_name, 20 - str_length(bbsnet_conf[i].site_name, 1), "",
1415     (bbsnet_conf[i].use_ssh ? "SSH" : "Telnet"));
1416 sysadm 1.84 moveto(20, 80);
1417 sysadm 1.23 prints("|");
1418 sysadm 1.84 moveto(21, 1);
1419 sysadm 1.14 clrtoeol();
1420 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",
1421 sysadm 1.87 bbsnet_conf[i].host_name, bbsnet_conf[i].port, bbsnet_conf[i].charset);
1422 sysadm 1.84 moveto(21, 80);
1423 sysadm 1.23 prints("|");
1424 sysadm 1.14 iflush();
1425 sysadm 1.1
1426 sysadm 1.14 return 0;
1427 sysadm 1.1 }
1428    
1429 sysadm 1.83 int bbs_net()
1430 sysadm 1.1 {
1431 sysadm 1.98 int ch;
1432 sysadm 1.1
1433 sysadm 1.89 if (load_bbsnet_conf(CONF_BBSNET) < 0)
1434     {
1435     clearscr();
1436     moveto(1, 1);
1437     prints("加载穿梭配置失败！");
1438     press_any_key();
1439     return -1;
1440     }
1441 sysadm 1.1
1442 sysadm 1.14 bbsnet_refresh();
1443 sysadm 1.41 display_menu(&bbsnet_menu);
1444 sysadm 1.43 bbsnet_selchange();
1445 sysadm 1.14
1446 sysadm 1.26 while (!SYS_server_exit)
1447 sysadm 1.1 {
1448 sysadm 1.39 ch = igetch(100);
1449 sysadm 1.52
1450 sysadm 1.71 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
1451     {
1452     BBS_last_access_tm = time(NULL);
1453     }
1454 sysadm 1.64
1455 sysadm 1.14 switch (ch)
1456     {
1457 sysadm 1.47 case KEY_NULL: // broken pipe
1458 sysadm 1.104 log_debug("KEY_NULL");
1459 sysadm 1.40 goto cleanup;
1460 sysadm 1.14 case KEY_TIMEOUT:
1461 sysadm 1.78 if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
1462 sysadm 1.14 {
1463 sysadm 1.104 log_debug("User input timeout");
1464 sysadm 1.40 goto cleanup;
1465 sysadm 1.14 }
1466 sysadm 1.29 continue;
1467 sysadm 1.64 case KEY_ESC:
1468     case Ctrl('C'): // user cancel
1469     goto cleanup;
1470 sysadm 1.14 case CR:
1471 sysadm 1.98 if (bbsnet_connect(bbsnet_menu.menu_item_pos[0]) < 0)
1472     {
1473 sysadm 1.104 log_debug("bbsnet_connect() error");
1474 sysadm 1.98 }
1475 sysadm 1.84 // Force cleanup anything remaining in the output buffer
1476     clearscr();
1477     iflush();
1478     // Clear screen and redraw menu
1479 sysadm 1.14 bbsnet_refresh();
1480 sysadm 1.41 display_menu(&bbsnet_menu);
1481 sysadm 1.43 bbsnet_selchange();
1482 sysadm 1.14 break;
1483     case KEY_UP:
1484 sysadm 1.98 for (int i = 0; i < STATION_PER_LINE; i++)
1485 sysadm 1.20 {
1486 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
1487 sysadm 1.20 }
1488 sysadm 1.43 bbsnet_selchange();
1489 sysadm 1.14 break;
1490     case KEY_DOWN:
1491 sysadm 1.98 for (int i = 0; i < STATION_PER_LINE; i++)
1492 sysadm 1.20 {
1493 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
1494 sysadm 1.20 }
1495 sysadm 1.43 bbsnet_selchange();
1496 sysadm 1.14 break;
1497     case KEY_LEFT:
1498     menu_control(&bbsnet_menu, KEY_UP);
1499 sysadm 1.43 bbsnet_selchange();
1500 sysadm 1.14 break;
1501     case KEY_RIGHT:
1502     menu_control(&bbsnet_menu, KEY_DOWN);
1503 sysadm 1.43 bbsnet_selchange();
1504     break;
1505 sysadm 1.44 case KEY_HOME:
1506 sysadm 1.43 case KEY_PGUP:
1507     menu_control(&bbsnet_menu, KEY_PGUP);
1508     bbsnet_selchange();
1509 sysadm 1.14 break;
1510 sysadm 1.44 case KEY_END:
1511     case KEY_PGDN:
1512     menu_control(&bbsnet_menu, KEY_PGDN);
1513     bbsnet_selchange();
1514     break;
1515 sysadm 1.14 default:
1516     menu_control(&bbsnet_menu, ch);
1517 sysadm 1.43 bbsnet_selchange();
1518 sysadm 1.14 break;
1519     }
1520 sysadm 1.1 }
1521    
1522 sysadm 1.40 cleanup:
1523     unload_bbsnet_conf();
1524    
1525 sysadm 1.14 return 0;
1526 sysadm 1.1 }
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