/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.58 - (hide annotations)
Wed Oct 1 02:20:50 2025 UTC (5 months, 2 weeks ago) by sysadm
Branch: MAIN
Changes since 1.57: +7 -0 lines
Content type: text/x-csrc 
Update current action periodically while using BBSNET
1 sysadm 1.1 /***************************************************************************
2 sysadm 1.14 bbs_net.c - description
3     -------------------
4 sysadm 1.25 Copyright : (C) 2004-2025 by Leaflet
5     Email : leaflet@leafok.com
6 sysadm 1.1 ***************************************************************************/
7    
8     /***************************************************************************
9     * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12 sysadm 1.25 * the Free Software Foundation; either version 3 of the License, or *
13 sysadm 1.1 * (at your option) any later version. *
14     * *
15     ***************************************************************************/
16    
17     #include "bbs.h"
18     #include "common.h"
19 sysadm 1.55 #include "io.h"
20 sysadm 1.15 #include "log.h"
21 sysadm 1.55 #include "login.h"
22     #include "menu.h"
23 sysadm 1.15 #include "screen.h"
24 sysadm 1.55 #include <errno.h>
25     #include <fcntl.h>
26     #include <netdb.h>
27     #include <stdarg.h>
28 sysadm 1.1 #include <stdio.h>
29 sysadm 1.55 #include <stdlib.h>
30 sysadm 1.29 #include <string.h>
31     #include <time.h>
32     #include <unistd.h>
33 sysadm 1.55 #include <arpa/inet.h>
34     #include <libssh/libssh.h>
35     #include <libssh/server.h>
36     #include <libssh/callbacks.h>
37     #include <netinet/in.h>
38     #include <netinet/ip.h>
39 sysadm 1.29 #include <sys/select.h>
40 sysadm 1.1 #include <sys/ioctl.h>
41     #include <sys/socket.h>
42 sysadm 1.38 #include <sys/epoll.h>
43 sysadm 1.1
44 sysadm 1.26 #define MENU_CONF_DELIM " \t\r\n"
45    
46 sysadm 1.14 #define MAX_PROCESS_BAR_LEN 30
47     #define MAXSTATION 26 * 2
48     #define STATION_PER_LINE 4
49 sysadm 1.1
50     struct _bbsnet_conf
51     {
52 sysadm 1.14 char host1[20];
53     char host2[40];
54     char ip[40];
55 sysadm 1.24 in_port_t port;
56 sysadm 1.1 } bbsnet_conf[MAXSTATION];
57    
58     MENU_SET bbsnet_menu;
59    
60 sysadm 1.14 int load_bbsnet_conf(const char *file_config)
61 sysadm 1.1 {
62 sysadm 1.14 FILE *fp;
63     MENU *p_menu;
64 sysadm 1.41 MENU_ITEM *p_menu_item;
65     MENU_ITEM_ID menu_item_id;
66 sysadm 1.18 char t[256], *t1, *t2, *t3, *t4, *saveptr;
67 sysadm 1.14
68     fp = fopen(file_config, "r");
69     if (fp == NULL)
70 sysadm 1.20 {
71 sysadm 1.14 return -1;
72 sysadm 1.20 }
73 sysadm 1.14
74 sysadm 1.41 bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU));
75     if (bbsnet_menu.p_menu_pool == NULL)
76     {
77     log_error("calloc(p_menu_pool) error\n");
78     return -3;
79     }
80     bbsnet_menu.menu_count = 1;
81    
82     bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM));
83     if (bbsnet_menu.p_menu_item_pool == NULL)
84     {
85     log_error("calloc(p_menu_item_pool) error\n");
86     return -3;
87     }
88     bbsnet_menu.menu_item_count = MAXSTATION;
89    
90     p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
91 sysadm 1.40
92 sysadm 1.21 strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
93     p_menu->name[sizeof(p_menu->name) - 1] = '\0';
94 sysadm 1.14 p_menu->title.show = 0;
95 sysadm 1.41 p_menu->screen_show = 0;
96 sysadm 1.1
97 sysadm 1.41 menu_item_id = 0;
98     while (fgets(t, 255, fp) && menu_item_id < MAXSTATION)
99 sysadm 1.14 {
100 sysadm 1.26 t1 = strtok_r(t, MENU_CONF_DELIM, &saveptr);
101     t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
102     t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
103     t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
104 sysadm 1.14
105 sysadm 1.26 if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL || t[0] == '#' || t[0] == '*')
106 sysadm 1.18 {
107 sysadm 1.14 continue;
108 sysadm 1.18 }
109    
110 sysadm 1.41 strncpy(bbsnet_conf[menu_item_id].host1, t2, sizeof(bbsnet_conf[menu_item_id].host1) - 1);
111     bbsnet_conf[menu_item_id].host1[sizeof(bbsnet_conf[menu_item_id].host1) - 1] = '\0';
112     strncpy(bbsnet_conf[menu_item_id].host2, t1, sizeof(bbsnet_conf[menu_item_id].host2) - 1);
113     bbsnet_conf[menu_item_id].host2[sizeof(bbsnet_conf[menu_item_id].host2) - 1] = '\0';
114     strncpy(bbsnet_conf[menu_item_id].ip, t3, sizeof(bbsnet_conf[menu_item_id].ip) - 1);
115     bbsnet_conf[menu_item_id].ip[sizeof(bbsnet_conf[menu_item_id].ip) - 1] = '\0';
116     bbsnet_conf[menu_item_id].port = (in_port_t)(t4 ? atoi(t4) : 23);
117 sysadm 1.14
118 sysadm 1.41 p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id);
119     if (p_menu_item == NULL)
120     {
121     log_error("get_menu_item_by_id(%d) return NULL pointer\n", menu_item_id);
122     return -1;
123     }
124 sysadm 1.14
125 sysadm 1.41 p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE);
126     p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20);
127     snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id);
128     p_menu_item->submenu = 0;
129     p_menu_item->priv = 0;
130     p_menu_item->level = 0;
131     p_menu_item->name[0] =
132     (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id);
133     p_menu_item->name[1] = '\0';
134     snprintf(p_menu_item->text, sizeof(p_menu_item->text), "%c. %s",
135     p_menu_item->name[0], bbsnet_conf[menu_item_id].host1);
136    
137     p_menu->items[p_menu->item_count] = menu_item_id;
138     p_menu->item_count++;
139     menu_item_id++;
140     }
141    
142     bbsnet_menu.menu_item_count = (int16_t)menu_item_id;
143     bbsnet_menu.menu_id_path[0] = 0;
144     bbsnet_menu.menu_item_pos[0] = 0;
145     bbsnet_menu.choose_step = 0;
146 sysadm 1.14
147 sysadm 1.41 fclose(fp);
148 sysadm 1.14
149     return 0;
150 sysadm 1.1 }
151    
152 sysadm 1.40 void unload_bbsnet_conf(void)
153     {
154 sysadm 1.41 bbsnet_menu.menu_count = 0;
155     bbsnet_menu.menu_item_count = 0;
156    
157     free(bbsnet_menu.p_menu_pool);
158     bbsnet_menu.p_menu_pool = NULL;
159     free(bbsnet_menu.p_menu_item_pool);
160     bbsnet_menu.p_menu_item_pool = NULL;
161 sysadm 1.40 }
162    
163     void process_bar(int n, int len)
164 sysadm 1.1 {
165 sysadm 1.27 char buf[LINE_BUFFER_LEN];
166     char buf2[LINE_BUFFER_LEN];
167    
168     if (len > LINE_BUFFER_LEN)
169     {
170     len = LINE_BUFFER_LEN - 1;
171     }
172     if (n < 0)
173     {
174     n = 0;
175     }
176     else if (n > len)
177     {
178     n = len;
179     }
180 sysadm 1.14
181     moveto(4, 0);
182 sysadm 1.23 prints(" ------------------------------ \r\n");
183 sysadm 1.27 snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len);
184 sysadm 1.30 strncpy(buf2, buf, (size_t)n);
185 sysadm 1.27 buf2[n] = '\0';
186     prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n);
187 sysadm 1.23 prints(" ------------------------------ \r\n");
188 sysadm 1.14 iflush();
189 sysadm 1.1 }
190    
191 sysadm 1.14 int bbsnet_connect(int n)
192 sysadm 1.1 {
193 sysadm 1.36 int sock, ret, loop, error;
194 sysadm 1.38 int sock_connected = 0;
195 sysadm 1.36 int flags_sock;
196     int flags_stdin;
197     int flags_stdout;
198     int len;
199 sysadm 1.14 struct sockaddr_in sin;
200 sysadm 1.36 char input_buf[LINE_BUFFER_LEN];
201     char output_buf[LINE_BUFFER_LEN];
202     int input_buf_len = 0;
203     int output_buf_len = 0;
204     int input_buf_offset = 0;
205     int output_buf_offset = 0;
206 sysadm 1.38 struct epoll_event ev, events[MAX_EVENTS];
207     int nfds, epollfd;
208     int stdin_read_wait = 0;
209     int stdout_write_wait = 0;
210     int sock_read_wait = 0;
211     int sock_write_wait = 0;
212 sysadm 1.26 struct hostent *p_host = NULL;
213 sysadm 1.31 int tos;
214 sysadm 1.26 char remote_addr[IP_ADDR_LEN];
215 sysadm 1.14 int remote_port;
216 sysadm 1.56 time_t t_used = time(NULL);
217 sysadm 1.14 struct tm *tm_used;
218 sysadm 1.26 int ch;
219 sysadm 1.14
220 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
221     {
222     log_error("user_online_update(BBS_NET) error\n");
223     }
224    
225 sysadm 1.14 clearscr();
226    
227     moveto(0, 0);
228 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
229 sysadm 1.14 bbsnet_conf[n].host1, bbsnet_conf[n].ip);
230     iflush();
231    
232 sysadm 1.26 p_host = gethostbyname(bbsnet_conf[n].ip);
233 sysadm 1.14
234 sysadm 1.26 if (p_host == NULL)
235 sysadm 1.1 {
236 sysadm 1.57 prints("\033[1;31m查找主机名失败！\033[m\r\n");
237 sysadm 1.14 press_any_key();
238     return -1;
239 sysadm 1.1 }
240 sysadm 1.14
241     sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
242    
243     if (sock < 0)
244 sysadm 1.1 {
245 sysadm 1.57 prints("\033[1;31m无法创建socket！\033[m\r\n");
246 sysadm 1.14 press_any_key();
247     return -1;
248 sysadm 1.1 }
249    
250 sysadm 1.14 sin.sin_family = AF_INET;
251 sysadm 1.48 sin.sin_addr.s_addr = (BBS_address[0] != '\0' ? inet_addr(BBS_address) : INADDR_ANY);
252 sysadm 1.14 sin.sin_port = 0;
253    
254     if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
255     {
256 sysadm 1.31 log_error("Bind address %s:%u failed (%d)\n",
257     inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno);
258 sysadm 1.14 return -2;
259     }
260 sysadm 1.1
261 sysadm 1.49 memset(&sin, 0, sizeof(sin));
262 sysadm 1.14 sin.sin_family = AF_INET;
263 sysadm 1.26 sin.sin_addr = *(struct in_addr *)p_host->h_addr_list[0];
264 sysadm 1.14 sin.sin_port = htons(bbsnet_conf[n].port);
265    
266 sysadm 1.21 strncpy(remote_addr, inet_ntoa(sin.sin_addr), sizeof(remote_addr) - 1);
267     remote_addr[sizeof(remote_addr) - 1] = '\0';
268 sysadm 1.14 remote_port = ntohs(sin.sin_port);
269    
270 sysadm 1.57 prints("\033[1;32m穿梭进度条提示您当前已使用的时间，按\033[1;33mCtrl+C\033[1;32m中断。\033[m\r\n");
271 sysadm 1.14 process_bar(0, MAX_PROCESS_BAR_LEN);
272 sysadm 1.29
273 sysadm 1.39 // Set socket as non-blocking
274     flags_sock = fcntl(sock, F_GETFL, 0);
275     fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK);
276    
277     // Set STDIN/STDOUT as non-blocking
278     flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0);
279     flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0);
280     fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK);
281     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK);
282    
283 sysadm 1.38 epollfd = epoll_create1(0);
284     if (epollfd < 0)
285     {
286     log_error("epoll_create1() error (%d)\n", errno);
287     return -1;
288     }
289    
290     ev.events = EPOLLOUT;
291     ev.data.fd = sock;
292     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
293     {
294     log_error("epoll_ctl(socket) error (%d)\n", errno);
295 sysadm 1.39 goto cleanup;
296 sysadm 1.38 }
297    
298     ev.events = EPOLLIN;
299     ev.data.fd = STDIN_FILENO;
300     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
301     {
302     log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
303 sysadm 1.39 goto cleanup;
304 sysadm 1.38 }
305    
306     while (!SYS_server_exit)
307 sysadm 1.29 {
308 sysadm 1.38 if ((ret = connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0)
309 sysadm 1.29 {
310 sysadm 1.38 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
311     {
312     // Use select / epoll to check writability of the socket,
313     // then use getsockopt to check the status of the socket.
314     // See man connect(2)
315     break;
316     }
317     else if (errno == EINTR)
318     {
319     continue;
320     }
321     else
322     {
323     log_error("connect(socket) error (%d)\n", errno);
324 sysadm 1.39
325 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
326 sysadm 1.38 press_any_key();
327 sysadm 1.39
328     goto cleanup;
329 sysadm 1.38 }
330 sysadm 1.29 }
331     }
332    
333 sysadm 1.38 for (int j = 0; j < MAX_PROCESS_BAR_LEN && !sock_connected && !SYS_server_exit; j++)
334 sysadm 1.1 {
335 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 500); // 0.5 second
336 sysadm 1.29
337 sysadm 1.38 if (nfds < 0)
338 sysadm 1.20 {
339 sysadm 1.29 if (errno != EINTR)
340     {
341 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
342 sysadm 1.39 break;
343 sysadm 1.29 }
344 sysadm 1.20 }
345 sysadm 1.38 else if (nfds == 0) // timeout
346     {
347     process_bar(j + 1, MAX_PROCESS_BAR_LEN);
348     }
349     else // ret > 0
350 sysadm 1.14 {
351 sysadm 1.38 for (int i = 0; i < nfds; i++)
352 sysadm 1.29 {
353 sysadm 1.38 if (events[i].data.fd == sock)
354     {
355     len = sizeof(error);
356     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&len) < 0)
357     {
358     log_error("getsockopt() error (%d) !\n", error);
359 sysadm 1.39 goto cleanup;
360 sysadm 1.38 }
361     if (error == 0)
362     {
363     sock_connected = 1;
364     }
365     }
366     else if (events[i].data.fd == STDIN_FILENO)
367     {
368     ch = igetch(0);
369 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
370 sysadm 1.38 {
371 sysadm 1.39 goto cleanup;
372 sysadm 1.38 }
373     }
374 sysadm 1.29 }
375 sysadm 1.14 }
376 sysadm 1.12 }
377 sysadm 1.38 if (SYS_server_exit)
378     {
379 sysadm 1.39 goto cleanup;
380 sysadm 1.38 }
381     if (!sock_connected)
382 sysadm 1.12 {
383 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
384 sysadm 1.14 press_any_key();
385 sysadm 1.39
386     goto cleanup;
387 sysadm 1.12 }
388 sysadm 1.29
389 sysadm 1.31 tos = IPTOS_LOWDELAY;
390     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
391     {
392     log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
393     }
394 sysadm 1.14
395 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
396 sysadm 1.33 iflush();
397 sysadm 1.46 log_common("BBSNET connect to %s:%d\n", remote_addr, remote_port);
398 sysadm 1.14
399 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
400     ev.data.fd = sock;
401     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
402     {
403     log_error("epoll_ctl(socket) error (%d)\n", errno);
404 sysadm 1.39 goto cleanup;
405 sysadm 1.38 }
406    
407     ev.events = EPOLLOUT;
408     ev.data.fd = STDOUT_FILENO;
409     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
410     {
411     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
412 sysadm 1.39 goto cleanup;
413 sysadm 1.38 }
414    
415 sysadm 1.50 BBS_last_access_tm = t_used = time(NULL);
416 sysadm 1.14 loop = 1;
417    
418 sysadm 1.26 while (loop && !SYS_server_exit)
419 sysadm 1.12 {
420 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
421     {
422     log_error("SSH channel is closed\n");
423     loop = 0;
424     break;
425     }
426    
427 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
428 sysadm 1.33
429 sysadm 1.38 if (nfds < 0)
430 sysadm 1.14 {
431 sysadm 1.38 if (errno != EINTR)
432 sysadm 1.14 {
433 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
434     break;
435 sysadm 1.14 }
436 sysadm 1.38 continue;
437 sysadm 1.14 }
438 sysadm 1.38 else if (nfds == 0) // timeout
439 sysadm 1.1 {
440 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
441 sysadm 1.28 {
442 sysadm 1.38 break;
443 sysadm 1.28 }
444 sysadm 1.38 continue;
445 sysadm 1.1 }
446 sysadm 1.38
447     for (int i = 0; i < nfds; i++)
448 sysadm 1.1 {
449 sysadm 1.38 if (events[i].data.fd == STDIN_FILENO || stdin_read_wait)
450 sysadm 1.14 {
451 sysadm 1.38 stdin_read_wait = 1;
452     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
453 sysadm 1.33 {
454 sysadm 1.47 if (SSH_v2)
455     {
456     ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
457     if (ret == SSH_ERROR)
458     {
459     log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
460     loop = 0;
461     break;
462     }
463     else if (ret == SSH_EOF)
464     {
465     stdin_read_wait = 0;
466     loop = 0;
467     break;
468     }
469     else if (ret == 0)
470     {
471     stdin_read_wait = 0;
472     break; // Check whether channel is still open
473     }
474     }
475     else
476     {
477     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
478     }
479 sysadm 1.38 if (ret < 0)
480 sysadm 1.33 {
481 sysadm 1.38 if (errno == EAGAIN || errno == EWOULDBLOCK)
482     {
483     stdin_read_wait = 0;
484     break;
485     }
486     else if (errno == EINTR)
487     {
488     continue;
489     }
490     else
491     {
492     log_error("read(STDIN) error (%d)\n", errno);
493     loop = 0;
494     break;
495     }
496     }
497     else if (ret == 0) // broken pipe
498     {
499 sysadm 1.54 #ifdef _DEBUG
500     log_error("read(STDIN) EOF\n");
501     #endif
502 sysadm 1.38 stdin_read_wait = 0;
503 sysadm 1.33 loop = 0;
504 sysadm 1.38 break;
505     }
506     else
507     {
508     input_buf_len += ret;
509 sysadm 1.50 BBS_last_access_tm = time(NULL);
510 sysadm 1.58
511     // Refresh current action while user input
512     if (user_online_update("BBS_NET") < 0)
513     {
514     log_error("user_online_update(BBS_NET) error\n");
515     }
516    
517 sysadm 1.38 continue;
518 sysadm 1.33 }
519     }
520 sysadm 1.36 }
521 sysadm 1.29
522 sysadm 1.38 if (events[i].data.fd == sock || sock_write_wait) // EPOLLOUT
523 sysadm 1.36 {
524 sysadm 1.38 sock_write_wait = 1;
525     while (input_buf_offset < input_buf_len && !SYS_server_exit)
526 sysadm 1.36 {
527 sysadm 1.38 ret = (int)write(sock, input_buf + input_buf_offset, (size_t)(input_buf_len - input_buf_offset));
528     if (ret < 0)
529 sysadm 1.36 {
530 sysadm 1.38 if (errno == EAGAIN || errno == EWOULDBLOCK)
531     {
532     sock_write_wait = 0;
533     break;
534     }
535     else if (errno == EINTR)
536     {
537     continue;
538     }
539     else
540     {
541     log_error("write(socket) error (%d)\n", errno);
542     loop = 0;
543     break;
544     }
545     }
546     else if (ret == 0) // broken pipe
547     {
548 sysadm 1.54 #ifdef _DEBUG
549     log_error("write(socket) EOF\n");
550     #endif
551 sysadm 1.38 sock_write_wait = 0;
552 sysadm 1.36 loop = 0;
553 sysadm 1.38 break;
554     }
555     else
556     {
557     input_buf_offset += ret;
558     if (input_buf_offset >= input_buf_len) // Output buffer complete
559     {
560     input_buf_offset = 0;
561     input_buf_len = 0;
562     break;
563     }
564     continue;
565 sysadm 1.36 }
566     }
567 sysadm 1.14 }
568 sysadm 1.36
569 sysadm 1.38 if (events[i].data.fd == sock || sock_read_wait) // EPOLLIN
570 sysadm 1.14 {
571 sysadm 1.38 sock_read_wait = 1;
572     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
573 sysadm 1.14 {
574 sysadm 1.38 ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
575     if (ret < 0)
576     {
577     if (errno == EAGAIN || errno == EWOULDBLOCK)
578     {
579     sock_read_wait = 0;
580     break;
581     }
582     else if (errno == EINTR)
583     {
584     continue;
585     }
586     else
587     {
588     log_error("read(socket) error (%d)\n", errno);
589     loop = 0;
590     break;
591     }
592     }
593     else if (ret == 0) // broken pipe
594 sysadm 1.33 {
595 sysadm 1.52 #ifdef _DEBUG
596     log_error("read(socket) EOF\n");
597     #endif
598 sysadm 1.38 sock_read_wait = 0;
599 sysadm 1.33 loop = 0;
600 sysadm 1.38 break;
601     }
602     else
603     {
604     output_buf_len += ret;
605     continue;
606 sysadm 1.33 }
607     }
608 sysadm 1.36 }
609    
610 sysadm 1.38 if (events[i].data.fd == STDOUT_FILENO || stdout_write_wait)
611 sysadm 1.36 {
612 sysadm 1.38 stdout_write_wait = 1;
613     while (output_buf_offset < output_buf_len && !SYS_server_exit)
614 sysadm 1.36 {
615 sysadm 1.47 if (SSH_v2)
616     {
617     ret = ssh_channel_write(SSH_channel, output_buf + output_buf_offset, (uint32_t)(output_buf_len - output_buf_offset));
618     if (ret == SSH_ERROR)
619     {
620     log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
621     loop = 0;
622     break;
623     }
624     }
625     else
626     {
627     ret = (int)write(STDOUT_FILENO, output_buf + output_buf_offset, (size_t)(output_buf_len - output_buf_offset));
628     }
629 sysadm 1.38 if (ret < 0)
630     {
631     if (errno == EAGAIN || errno == EWOULDBLOCK)
632     {
633     stdout_write_wait = 0;
634     break;
635     }
636     else if (errno == EINTR)
637     {
638     continue;
639     }
640     else
641     {
642     log_error("write(STDOUT) error (%d)\n", errno);
643     loop = 0;
644     break;
645     }
646     }
647     else if (ret == 0) // broken pipe
648 sysadm 1.33 {
649 sysadm 1.52 #ifdef _DEBUG
650     log_error("write(STDOUT) EOF\n");
651     #endif
652 sysadm 1.38 stdout_write_wait = 0;
653 sysadm 1.36 loop = 0;
654 sysadm 1.38 break;
655     }
656     else
657     {
658     output_buf_offset += ret;
659     if (output_buf_offset >= output_buf_len) // Output buffer complete
660     {
661     output_buf_offset = 0;
662     output_buf_len = 0;
663     break;
664     }
665     continue;
666 sysadm 1.36 }
667     }
668 sysadm 1.14 }
669 sysadm 1.1 }
670     }
671    
672 sysadm 1.39 cleanup:
673     if (close(epollfd) < 0)
674     {
675     log_error("close(epoll) error (%d)\n");
676     }
677    
678 sysadm 1.36 // Restore STDIN/STDOUT flags
679     fcntl(STDIN_FILENO, F_SETFL, flags_stdin);
680     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout);
681    
682     // Restore socket flags
683     fcntl(sock, F_SETFL, flags_sock);
684    
685 sysadm 1.14 if (close(sock) == -1)
686     {
687     log_error("Close socket failed\n");
688     }
689 sysadm 1.1
690 sysadm 1.50 t_used = time(NULL) - t_used;
691 sysadm 1.14 tm_used = gmtime(&t_used);
692 sysadm 1.8
693 sysadm 1.46 log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n",
694 sysadm 1.47 tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min,
695     tm_used->tm_sec);
696 sysadm 1.8
697 sysadm 1.14 return 0;
698 sysadm 1.1 }
699    
700     static int
701 sysadm 1.14 bbsnet_refresh()
702 sysadm 1.1 {
703 sysadm 1.14 clearscr();
704     moveto(1, 0);
705 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
706 sysadm 1.20 for (int i = 2; i < 19; i++)
707 sysadm 1.14 {
708     moveto(i, 0);
709 sysadm 1.23 prints("|");
710 sysadm 1.14 moveto(i, 79);
711 sysadm 1.23 prints("|");
712 sysadm 1.14 }
713     moveto(19, 0);
714 sysadm 1.23 prints("|-----------------------------------------------------------------------------|");
715 sysadm 1.14 moveto(22, 0);
716 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
717 sysadm 1.14 moveto(23, 0);
718 sysadm 1.57 prints(" [\x1b[1;32mCtrl+C\x1b[m]退出");
719 sysadm 1.13
720 sysadm 1.14 iflush();
721 sysadm 1.1
722 sysadm 1.14 return 0;
723 sysadm 1.1 }
724    
725 sysadm 1.43 int bbsnet_selchange()
726 sysadm 1.1 {
727 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
728    
729 sysadm 1.14 moveto(20, 0);
730     clrtoeol();
731 sysadm 1.57 prints("|\x1b[1m单位:\x1b[1;33m%-18s\x1b[m 站名:\x1b[1;33m%s\x1b[m",
732 sysadm 1.43 bbsnet_conf[i].host2, bbsnet_conf[i].host1);
733 sysadm 1.14 moveto(20, 79);
734 sysadm 1.23 prints("|");
735 sysadm 1.14 moveto(21, 0);
736     clrtoeol();
737 sysadm 1.57 prints("|\x1b[1m连往:\x1b[1;33m%-20s", bbsnet_conf[i].ip);
738 sysadm 1.43 if (bbsnet_conf[i].port != 23)
739 sysadm 1.20 {
740 sysadm 1.43 prints(" %d", bbsnet_conf[i].port);
741 sysadm 1.20 }
742 sysadm 1.14 prints("\x1b[m");
743     moveto(21, 79);
744 sysadm 1.23 prints("|");
745 sysadm 1.14 iflush();
746 sysadm 1.1
747 sysadm 1.14 return 0;
748 sysadm 1.1 }
749    
750 sysadm 1.14 int bbs_net()
751 sysadm 1.1 {
752 sysadm 1.43 int ch, i;
753 sysadm 1.1
754 sysadm 1.17 load_bbsnet_conf(CONF_BBSNET);
755 sysadm 1.1
756 sysadm 1.50 BBS_last_access_tm = time(NULL);
757 sysadm 1.14
758     clearscr();
759     bbsnet_refresh();
760 sysadm 1.41 display_menu(&bbsnet_menu);
761 sysadm 1.43 bbsnet_selchange();
762 sysadm 1.14
763 sysadm 1.26 while (!SYS_server_exit)
764 sysadm 1.1 {
765 sysadm 1.39 ch = igetch(100);
766 sysadm 1.52
767 sysadm 1.14 switch (ch)
768     {
769 sysadm 1.47 case KEY_NULL: // broken pipe
770 sysadm 1.45 case KEY_ESC:
771 sysadm 1.35 case Ctrl('C'): // user cancel
772 sysadm 1.40 goto cleanup;
773 sysadm 1.14 case KEY_TIMEOUT:
774 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
775 sysadm 1.14 {
776 sysadm 1.40 goto cleanup;
777 sysadm 1.14 }
778 sysadm 1.29 continue;
779 sysadm 1.14 case CR:
780 sysadm 1.41 igetch_reset();
781 sysadm 1.43 bbsnet_connect(bbsnet_menu.menu_item_pos[0]);
782 sysadm 1.14 bbsnet_refresh();
783 sysadm 1.41 display_menu(&bbsnet_menu);
784 sysadm 1.43 bbsnet_selchange();
785 sysadm 1.14 break;
786     case KEY_UP:
787     for (i = 0; i < STATION_PER_LINE; i++)
788 sysadm 1.20 {
789 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
790 sysadm 1.20 }
791 sysadm 1.43 bbsnet_selchange();
792 sysadm 1.14 break;
793     case KEY_DOWN:
794     for (i = 0; i < STATION_PER_LINE; i++)
795 sysadm 1.20 {
796 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
797 sysadm 1.20 }
798 sysadm 1.43 bbsnet_selchange();
799 sysadm 1.14 break;
800     case KEY_LEFT:
801     menu_control(&bbsnet_menu, KEY_UP);
802 sysadm 1.43 bbsnet_selchange();
803 sysadm 1.14 break;
804     case KEY_RIGHT:
805     menu_control(&bbsnet_menu, KEY_DOWN);
806 sysadm 1.43 bbsnet_selchange();
807     break;
808 sysadm 1.44 case KEY_HOME:
809 sysadm 1.43 case KEY_PGUP:
810     menu_control(&bbsnet_menu, KEY_PGUP);
811     bbsnet_selchange();
812 sysadm 1.14 break;
813 sysadm 1.44 case KEY_END:
814     case KEY_PGDN:
815     menu_control(&bbsnet_menu, KEY_PGDN);
816     bbsnet_selchange();
817     break;
818 sysadm 1.14 default:
819     menu_control(&bbsnet_menu, ch);
820 sysadm 1.43 bbsnet_selchange();
821 sysadm 1.14 break;
822     }
823 sysadm 1.50 BBS_last_access_tm = time(NULL);
824 sysadm 1.1 }
825    
826 sysadm 1.40 cleanup:
827     unload_bbsnet_conf();
828    
829 sysadm 1.14 return 0;
830 sysadm 1.1 }
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