/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.68 - (hide annotations)
Sun Oct 19 09:09:17 2025 UTC (4 months, 3 weeks ago) by sysadm
Branch: MAIN
Changes since 1.67: +7 -3 lines
Content type: text/x-csrc 
Refine tocode passed into iconv_open()
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 1.60 char charset[20];
57 sysadm 1.1 } bbsnet_conf[MAXSTATION];
58    
59     MENU_SET bbsnet_menu;
60    
61 sysadm 1.14 int load_bbsnet_conf(const char *file_config)
62 sysadm 1.1 {
63 sysadm 1.14 FILE *fp;
64     MENU *p_menu;
65 sysadm 1.41 MENU_ITEM *p_menu_item;
66     MENU_ITEM_ID menu_item_id;
67 sysadm 1.60 char t[256], *t1, *t2, *t3, *t4, *t5, *saveptr;
68 sysadm 1.14
69     fp = fopen(file_config, "r");
70     if (fp == NULL)
71 sysadm 1.20 {
72 sysadm 1.14 return -1;
73 sysadm 1.20 }
74 sysadm 1.14
75 sysadm 1.41 bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU));
76     if (bbsnet_menu.p_menu_pool == NULL)
77     {
78     log_error("calloc(p_menu_pool) error\n");
79     return -3;
80     }
81     bbsnet_menu.menu_count = 1;
82    
83     bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM));
84     if (bbsnet_menu.p_menu_item_pool == NULL)
85     {
86     log_error("calloc(p_menu_item_pool) error\n");
87     return -3;
88     }
89     bbsnet_menu.menu_item_count = MAXSTATION;
90    
91     p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
92 sysadm 1.40
93 sysadm 1.21 strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
94     p_menu->name[sizeof(p_menu->name) - 1] = '\0';
95 sysadm 1.14 p_menu->title.show = 0;
96 sysadm 1.41 p_menu->screen_show = 0;
97 sysadm 1.1
98 sysadm 1.41 menu_item_id = 0;
99     while (fgets(t, 255, fp) && menu_item_id < MAXSTATION)
100 sysadm 1.14 {
101 sysadm 1.26 t1 = strtok_r(t, MENU_CONF_DELIM, &saveptr);
102     t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
103     t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
104     t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
105 sysadm 1.60 t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
106 sysadm 1.14
107 sysadm 1.60 if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL || t5 == NULL || t[0] == '#' || t[0] == '*')
108 sysadm 1.18 {
109 sysadm 1.14 continue;
110 sysadm 1.18 }
111    
112 sysadm 1.41 strncpy(bbsnet_conf[menu_item_id].host1, t2, sizeof(bbsnet_conf[menu_item_id].host1) - 1);
113     bbsnet_conf[menu_item_id].host1[sizeof(bbsnet_conf[menu_item_id].host1) - 1] = '\0';
114     strncpy(bbsnet_conf[menu_item_id].host2, t1, sizeof(bbsnet_conf[menu_item_id].host2) - 1);
115     bbsnet_conf[menu_item_id].host2[sizeof(bbsnet_conf[menu_item_id].host2) - 1] = '\0';
116     strncpy(bbsnet_conf[menu_item_id].ip, t3, sizeof(bbsnet_conf[menu_item_id].ip) - 1);
117     bbsnet_conf[menu_item_id].ip[sizeof(bbsnet_conf[menu_item_id].ip) - 1] = '\0';
118     bbsnet_conf[menu_item_id].port = (in_port_t)(t4 ? atoi(t4) : 23);
119 sysadm 1.60 strncpy(bbsnet_conf[menu_item_id].charset, t5, sizeof(bbsnet_conf[menu_item_id].charset) - 1);
120     bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0';
121 sysadm 1.14
122 sysadm 1.41 p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id);
123     if (p_menu_item == NULL)
124     {
125     log_error("get_menu_item_by_id(%d) return NULL pointer\n", menu_item_id);
126     return -1;
127     }
128 sysadm 1.14
129 sysadm 1.41 p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE);
130     p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20);
131     snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id);
132     p_menu_item->submenu = 0;
133     p_menu_item->priv = 0;
134     p_menu_item->level = 0;
135     p_menu_item->name[0] =
136     (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id);
137     p_menu_item->name[1] = '\0';
138     snprintf(p_menu_item->text, sizeof(p_menu_item->text), "%c. %s",
139     p_menu_item->name[0], bbsnet_conf[menu_item_id].host1);
140    
141     p_menu->items[p_menu->item_count] = menu_item_id;
142     p_menu->item_count++;
143     menu_item_id++;
144     }
145    
146     bbsnet_menu.menu_item_count = (int16_t)menu_item_id;
147     bbsnet_menu.menu_id_path[0] = 0;
148     bbsnet_menu.menu_item_pos[0] = 0;
149     bbsnet_menu.choose_step = 0;
150 sysadm 1.14
151 sysadm 1.41 fclose(fp);
152 sysadm 1.14
153     return 0;
154 sysadm 1.1 }
155    
156 sysadm 1.40 void unload_bbsnet_conf(void)
157     {
158 sysadm 1.41 bbsnet_menu.menu_count = 0;
159     bbsnet_menu.menu_item_count = 0;
160    
161     free(bbsnet_menu.p_menu_pool);
162     bbsnet_menu.p_menu_pool = NULL;
163     free(bbsnet_menu.p_menu_item_pool);
164     bbsnet_menu.p_menu_item_pool = NULL;
165 sysadm 1.40 }
166    
167     void process_bar(int n, int len)
168 sysadm 1.1 {
169 sysadm 1.27 char buf[LINE_BUFFER_LEN];
170     char buf2[LINE_BUFFER_LEN];
171    
172     if (len > LINE_BUFFER_LEN)
173     {
174     len = LINE_BUFFER_LEN - 1;
175     }
176     if (n < 0)
177     {
178     n = 0;
179     }
180     else if (n > len)
181     {
182     n = len;
183     }
184 sysadm 1.14
185     moveto(4, 0);
186 sysadm 1.23 prints(" ------------------------------ \r\n");
187 sysadm 1.27 snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len);
188 sysadm 1.30 strncpy(buf2, buf, (size_t)n);
189 sysadm 1.27 buf2[n] = '\0';
190     prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n);
191 sysadm 1.23 prints(" ------------------------------ \r\n");
192 sysadm 1.14 iflush();
193 sysadm 1.1 }
194    
195 sysadm 1.14 int bbsnet_connect(int n)
196 sysadm 1.1 {
197 sysadm 1.36 int sock, ret, loop, error;
198 sysadm 1.38 int sock_connected = 0;
199 sysadm 1.36 int flags_sock;
200     int flags_stdin;
201     int flags_stdout;
202     int len;
203 sysadm 1.14 struct sockaddr_in sin;
204 sysadm 1.36 char input_buf[LINE_BUFFER_LEN];
205     char output_buf[LINE_BUFFER_LEN];
206     int input_buf_len = 0;
207     int output_buf_len = 0;
208     int input_buf_offset = 0;
209     int output_buf_offset = 0;
210 sysadm 1.60 char input_conv[LINE_BUFFER_LEN * 2];
211     char output_conv[LINE_BUFFER_LEN * 2];
212     int input_conv_len = 0;
213     int output_conv_len = 0;
214     int input_conv_offset = 0;
215     int output_conv_offset = 0;
216 sysadm 1.67 iconv_t input_cd = NULL;
217 sysadm 1.60 iconv_t output_cd = NULL;
218 sysadm 1.68 char tocode[32];
219 sysadm 1.38 struct epoll_event ev, events[MAX_EVENTS];
220     int nfds, epollfd;
221     int stdin_read_wait = 0;
222     int stdout_write_wait = 0;
223     int sock_read_wait = 0;
224     int sock_write_wait = 0;
225 sysadm 1.26 struct hostent *p_host = NULL;
226 sysadm 1.31 int tos;
227 sysadm 1.26 char remote_addr[IP_ADDR_LEN];
228 sysadm 1.14 int remote_port;
229 sysadm 1.63 char local_addr[IP_ADDR_LEN];
230     int local_port;
231     socklen_t sock_len;
232 sysadm 1.56 time_t t_used = time(NULL);
233 sysadm 1.14 struct tm *tm_used;
234 sysadm 1.26 int ch;
235 sysadm 1.14
236 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
237     {
238     log_error("user_online_update(BBS_NET) error\n");
239     }
240    
241 sysadm 1.14 clearscr();
242    
243     moveto(0, 0);
244 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
245 sysadm 1.14 bbsnet_conf[n].host1, bbsnet_conf[n].ip);
246     iflush();
247    
248 sysadm 1.26 p_host = gethostbyname(bbsnet_conf[n].ip);
249 sysadm 1.14
250 sysadm 1.26 if (p_host == NULL)
251 sysadm 1.1 {
252 sysadm 1.57 prints("\033[1;31m查找主机名失败！\033[m\r\n");
253 sysadm 1.14 press_any_key();
254     return -1;
255 sysadm 1.1 }
256 sysadm 1.14
257     sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
258    
259     if (sock < 0)
260 sysadm 1.1 {
261 sysadm 1.57 prints("\033[1;31m无法创建socket！\033[m\r\n");
262 sysadm 1.14 press_any_key();
263     return -1;
264 sysadm 1.1 }
265    
266 sysadm 1.14 sin.sin_family = AF_INET;
267 sysadm 1.48 sin.sin_addr.s_addr = (BBS_address[0] != '\0' ? inet_addr(BBS_address) : INADDR_ANY);
268 sysadm 1.14 sin.sin_port = 0;
269    
270     if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
271     {
272 sysadm 1.31 log_error("Bind address %s:%u failed (%d)\n",
273     inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno);
274 sysadm 1.14 return -2;
275     }
276 sysadm 1.1
277 sysadm 1.49 memset(&sin, 0, sizeof(sin));
278 sysadm 1.14 sin.sin_family = AF_INET;
279 sysadm 1.26 sin.sin_addr = *(struct in_addr *)p_host->h_addr_list[0];
280 sysadm 1.14 sin.sin_port = htons(bbsnet_conf[n].port);
281    
282 sysadm 1.21 strncpy(remote_addr, inet_ntoa(sin.sin_addr), sizeof(remote_addr) - 1);
283     remote_addr[sizeof(remote_addr) - 1] = '\0';
284 sysadm 1.14 remote_port = ntohs(sin.sin_port);
285    
286 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");
287 sysadm 1.14 process_bar(0, MAX_PROCESS_BAR_LEN);
288 sysadm 1.29
289 sysadm 1.39 // Set socket as non-blocking
290     flags_sock = fcntl(sock, F_GETFL, 0);
291     fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK);
292    
293     // Set STDIN/STDOUT as non-blocking
294     flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0);
295     flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0);
296     fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK);
297     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK);
298    
299 sysadm 1.38 epollfd = epoll_create1(0);
300     if (epollfd < 0)
301     {
302     log_error("epoll_create1() error (%d)\n", errno);
303     return -1;
304     }
305    
306 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
307 sysadm 1.38 ev.data.fd = sock;
308     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
309     {
310     log_error("epoll_ctl(socket) error (%d)\n", errno);
311 sysadm 1.39 goto cleanup;
312 sysadm 1.38 }
313    
314 sysadm 1.59 ev.events = EPOLLIN | EPOLLET;
315 sysadm 1.38 ev.data.fd = STDIN_FILENO;
316     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
317     {
318     log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
319 sysadm 1.39 goto cleanup;
320 sysadm 1.38 }
321    
322     while (!SYS_server_exit)
323 sysadm 1.29 {
324 sysadm 1.38 if ((ret = connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0)
325 sysadm 1.29 {
326 sysadm 1.38 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
327     {
328     // Use select / epoll to check writability of the socket,
329     // then use getsockopt to check the status of the socket.
330     // See man connect(2)
331     break;
332     }
333     else if (errno == EINTR)
334     {
335     continue;
336     }
337     else
338     {
339     log_error("connect(socket) error (%d)\n", errno);
340 sysadm 1.39
341 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
342 sysadm 1.38 press_any_key();
343 sysadm 1.39
344     goto cleanup;
345 sysadm 1.38 }
346 sysadm 1.29 }
347     }
348    
349 sysadm 1.38 for (int j = 0; j < MAX_PROCESS_BAR_LEN && !sock_connected && !SYS_server_exit; j++)
350 sysadm 1.1 {
351 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 500); // 0.5 second
352 sysadm 1.29
353 sysadm 1.38 if (nfds < 0)
354 sysadm 1.20 {
355 sysadm 1.29 if (errno != EINTR)
356     {
357 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
358 sysadm 1.39 break;
359 sysadm 1.29 }
360 sysadm 1.20 }
361 sysadm 1.38 else if (nfds == 0) // timeout
362     {
363     process_bar(j + 1, MAX_PROCESS_BAR_LEN);
364     }
365     else // ret > 0
366 sysadm 1.14 {
367 sysadm 1.38 for (int i = 0; i < nfds; i++)
368 sysadm 1.29 {
369 sysadm 1.38 if (events[i].data.fd == sock)
370     {
371     len = sizeof(error);
372     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&len) < 0)
373     {
374     log_error("getsockopt() error (%d) !\n", error);
375 sysadm 1.39 goto cleanup;
376 sysadm 1.38 }
377     if (error == 0)
378     {
379     sock_connected = 1;
380     }
381     }
382     else if (events[i].data.fd == STDIN_FILENO)
383     {
384     ch = igetch(0);
385 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
386 sysadm 1.38 {
387 sysadm 1.39 goto cleanup;
388 sysadm 1.38 }
389     }
390 sysadm 1.29 }
391 sysadm 1.14 }
392 sysadm 1.12 }
393 sysadm 1.38 if (SYS_server_exit)
394     {
395 sysadm 1.39 goto cleanup;
396 sysadm 1.38 }
397     if (!sock_connected)
398 sysadm 1.12 {
399 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
400 sysadm 1.14 press_any_key();
401 sysadm 1.39
402     goto cleanup;
403 sysadm 1.12 }
404 sysadm 1.29
405 sysadm 1.31 tos = IPTOS_LOWDELAY;
406     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
407     {
408     log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
409     }
410 sysadm 1.14
411 sysadm 1.63 sock_len = sizeof(sin);
412     if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
413     {
414     log_error("getsockname() error: %d", errno);
415     goto cleanup;
416     }
417    
418     strncpy(local_addr, inet_ntoa(sin.sin_addr), sizeof(local_addr) - 1);
419     local_addr[sizeof(local_addr) - 1] = '\0';
420     local_port = ntohs(sin.sin_port);
421    
422 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
423 sysadm 1.33 iflush();
424 sysadm 1.63 log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n",
425     remote_addr, remote_port, local_addr, local_port, BBS_username);
426 sysadm 1.14
427 sysadm 1.68 snprintf(tocode, sizeof(tocode), "%s//TRANSLIT", bbsnet_conf[n].charset);
428     input_cd = iconv_open(tocode, stdio_charset);
429 sysadm 1.60 if (input_cd == (iconv_t)(-1))
430     {
431 sysadm 1.68 log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno);
432 sysadm 1.60 goto cleanup;
433     }
434 sysadm 1.68
435     snprintf(tocode, sizeof(tocode), "%s//TRANSLIT", stdio_charset);
436 sysadm 1.67 output_cd = iconv_open(stdio_charset, bbsnet_conf[n].charset);
437     if (output_cd == (iconv_t)(-1))
438 sysadm 1.60 {
439 sysadm 1.68 log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, tocode, errno);
440 sysadm 1.60 iconv_close(input_cd);
441     goto cleanup;
442     }
443    
444 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
445     ev.data.fd = sock;
446     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
447     {
448     log_error("epoll_ctl(socket) error (%d)\n", errno);
449 sysadm 1.39 goto cleanup;
450 sysadm 1.38 }
451    
452 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
453 sysadm 1.38 ev.data.fd = STDOUT_FILENO;
454     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
455     {
456     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
457 sysadm 1.39 goto cleanup;
458 sysadm 1.38 }
459    
460 sysadm 1.50 BBS_last_access_tm = t_used = time(NULL);
461 sysadm 1.14 loop = 1;
462    
463 sysadm 1.26 while (loop && !SYS_server_exit)
464 sysadm 1.12 {
465 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
466     {
467     log_error("SSH channel is closed\n");
468     loop = 0;
469     break;
470     }
471    
472 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
473 sysadm 1.33
474 sysadm 1.38 if (nfds < 0)
475 sysadm 1.14 {
476 sysadm 1.38 if (errno != EINTR)
477 sysadm 1.14 {
478 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
479     break;
480 sysadm 1.14 }
481 sysadm 1.38 continue;
482 sysadm 1.14 }
483 sysadm 1.38 else if (nfds == 0) // timeout
484 sysadm 1.1 {
485 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
486 sysadm 1.28 {
487 sysadm 1.38 break;
488 sysadm 1.28 }
489 sysadm 1.1 }
490 sysadm 1.38
491     for (int i = 0; i < nfds; i++)
492 sysadm 1.1 {
493 sysadm 1.59 if (events[i].data.fd == STDIN_FILENO)
494 sysadm 1.14 {
495 sysadm 1.38 stdin_read_wait = 1;
496 sysadm 1.59 }
497    
498     if (events[i].data.fd == sock)
499     {
500     if (events[i].events & EPOLLIN)
501     {
502     sock_read_wait = 1;
503     }
504     if (events[i].events & EPOLLOUT)
505     {
506     sock_write_wait = 1;
507     }
508     }
509    
510     if (events[i].data.fd == STDOUT_FILENO)
511     {
512     stdout_write_wait = 1;
513     }
514     }
515    
516     if (stdin_read_wait)
517     {
518     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
519     {
520     if (SSH_v2)
521 sysadm 1.33 {
522 sysadm 1.59 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
523     if (ret == SSH_ERROR)
524 sysadm 1.47 {
525 sysadm 1.59 log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
526     loop = 0;
527     break;
528 sysadm 1.47 }
529 sysadm 1.59 else if (ret == SSH_EOF)
530 sysadm 1.47 {
531 sysadm 1.59 stdin_read_wait = 0;
532     loop = 0;
533     break;
534 sysadm 1.47 }
535 sysadm 1.59 else if (ret == 0)
536 sysadm 1.33 {
537 sysadm 1.59 stdin_read_wait = 0;
538     break; // Check whether channel is still open
539 sysadm 1.38 }
540 sysadm 1.59 }
541     else
542     {
543     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
544     }
545     if (ret < 0)
546     {
547     if (errno == EAGAIN || errno == EWOULDBLOCK)
548 sysadm 1.38 {
549     stdin_read_wait = 0;
550     break;
551     }
552 sysadm 1.59 else if (errno == EINTR)
553     {
554     continue;
555     }
556 sysadm 1.38 else
557     {
558 sysadm 1.59 log_error("read(STDIN) error (%d)\n", errno);
559     loop = 0;
560     break;
561     }
562     }
563     else if (ret == 0) // broken pipe
564     {
565     #ifdef _DEBUG
566     log_error("read(STDIN) EOF\n");
567     #endif
568     stdin_read_wait = 0;
569     loop = 0;
570     break;
571     }
572     else
573     {
574     input_buf_len += ret;
575     BBS_last_access_tm = time(NULL);
576 sysadm 1.58
577 sysadm 1.59 // Refresh current action while user input
578     if (user_online_update("BBS_NET") < 0)
579     {
580     log_error("user_online_update(BBS_NET) error\n");
581     }
582 sysadm 1.58
583 sysadm 1.59 continue;
584 sysadm 1.33 }
585 sysadm 1.36 }
586 sysadm 1.59 }
587 sysadm 1.29
588 sysadm 1.59 if (sock_write_wait)
589     {
590 sysadm 1.60 if (input_buf_offset < input_buf_len)
591 sysadm 1.36 {
592 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);
593 sysadm 1.60 if (ret < 0)
594     {
595 sysadm 1.66 log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len);
596 sysadm 1.60 }
597     }
598    
599     while (input_conv_offset < input_conv_len && !SYS_server_exit)
600     {
601     ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
602 sysadm 1.59 if (ret < 0)
603 sysadm 1.36 {
604 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
605 sysadm 1.36 {
606 sysadm 1.59 sock_write_wait = 0;
607     break;
608 sysadm 1.38 }
609 sysadm 1.59 else if (errno == EINTR)
610 sysadm 1.38 {
611 sysadm 1.59 continue;
612     }
613     else
614     {
615     log_error("write(socket) error (%d)\n", errno);
616 sysadm 1.36 loop = 0;
617 sysadm 1.38 break;
618     }
619 sysadm 1.59 }
620     else if (ret == 0) // broken pipe
621     {
622     #ifdef _DEBUG
623     log_error("write(socket) EOF\n");
624     #endif
625     sock_write_wait = 0;
626     loop = 0;
627     break;
628     }
629     else
630     {
631 sysadm 1.60 input_conv_offset += ret;
632     if (input_conv_offset >= input_conv_len) // Output buffer complete
633 sysadm 1.38 {
634 sysadm 1.60 input_conv_offset = 0;
635     input_conv_len = 0;
636 sysadm 1.59 break;
637 sysadm 1.36 }
638 sysadm 1.59 continue;
639 sysadm 1.36 }
640 sysadm 1.14 }
641 sysadm 1.59 }
642 sysadm 1.36
643 sysadm 1.59 if (sock_read_wait)
644     {
645     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
646 sysadm 1.14 {
647 sysadm 1.59 ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
648     if (ret < 0)
649 sysadm 1.14 {
650 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
651 sysadm 1.38 {
652 sysadm 1.59 sock_read_wait = 0;
653     break;
654 sysadm 1.38 }
655 sysadm 1.59 else if (errno == EINTR)
656 sysadm 1.33 {
657 sysadm 1.59 continue;
658 sysadm 1.38 }
659     else
660     {
661 sysadm 1.59 log_error("read(socket) error (%d)\n", errno);
662     loop = 0;
663     break;
664 sysadm 1.33 }
665     }
666 sysadm 1.59 else if (ret == 0) // broken pipe
667     {
668     #ifdef _DEBUG
669     log_error("read(socket) EOF\n");
670     #endif
671     sock_read_wait = 0;
672     loop = 0;
673     break;
674     }
675     else
676     {
677     output_buf_len += ret;
678     continue;
679     }
680 sysadm 1.36 }
681 sysadm 1.59 }
682 sysadm 1.36
683 sysadm 1.59 if (stdout_write_wait)
684     {
685 sysadm 1.60 if (output_buf_offset < output_buf_len)
686     {
687 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);
688 sysadm 1.60 if (ret < 0)
689     {
690 sysadm 1.66 log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len);
691 sysadm 1.60 }
692     }
693    
694     while (output_conv_offset < output_conv_len && !SYS_server_exit)
695 sysadm 1.36 {
696 sysadm 1.59 if (SSH_v2)
697 sysadm 1.36 {
698 sysadm 1.60 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
699 sysadm 1.59 if (ret == SSH_ERROR)
700 sysadm 1.47 {
701 sysadm 1.59 log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
702     loop = 0;
703     break;
704 sysadm 1.47 }
705 sysadm 1.59 }
706     else
707     {
708 sysadm 1.60 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
709 sysadm 1.59 }
710     if (ret < 0)
711     {
712     if (errno == EAGAIN || errno == EWOULDBLOCK)
713 sysadm 1.47 {
714 sysadm 1.59 stdout_write_wait = 0;
715     break;
716 sysadm 1.47 }
717 sysadm 1.59 else if (errno == EINTR)
718 sysadm 1.38 {
719 sysadm 1.59 continue;
720 sysadm 1.38 }
721 sysadm 1.59 else
722 sysadm 1.33 {
723 sysadm 1.59 log_error("write(STDOUT) error (%d)\n", errno);
724 sysadm 1.36 loop = 0;
725 sysadm 1.38 break;
726     }
727 sysadm 1.59 }
728     else if (ret == 0) // broken pipe
729     {
730     #ifdef _DEBUG
731     log_error("write(STDOUT) EOF\n");
732     #endif
733     stdout_write_wait = 0;
734     loop = 0;
735     break;
736     }
737     else
738     {
739 sysadm 1.60 output_conv_offset += ret;
740     if (output_conv_offset >= output_conv_len) // Output buffer complete
741 sysadm 1.38 {
742 sysadm 1.60 output_conv_offset = 0;
743     output_conv_len = 0;
744 sysadm 1.59 break;
745 sysadm 1.36 }
746 sysadm 1.59 continue;
747 sysadm 1.36 }
748 sysadm 1.14 }
749 sysadm 1.1 }
750     }
751    
752 sysadm 1.60 iconv_close(input_cd);
753     iconv_close(output_cd);
754    
755 sysadm 1.39 cleanup:
756     if (close(epollfd) < 0)
757     {
758     log_error("close(epoll) error (%d)\n");
759     }
760    
761 sysadm 1.36 // Restore STDIN/STDOUT flags
762     fcntl(STDIN_FILENO, F_SETFL, flags_stdin);
763     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout);
764    
765     // Restore socket flags
766     fcntl(sock, F_SETFL, flags_sock);
767    
768 sysadm 1.14 if (close(sock) == -1)
769     {
770     log_error("Close socket failed\n");
771     }
772 sysadm 1.1
773 sysadm 1.50 t_used = time(NULL) - t_used;
774 sysadm 1.14 tm_used = gmtime(&t_used);
775 sysadm 1.8
776 sysadm 1.46 log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n",
777 sysadm 1.47 tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min,
778     tm_used->tm_sec);
779 sysadm 1.8
780 sysadm 1.14 return 0;
781 sysadm 1.1 }
782    
783     static int
784 sysadm 1.14 bbsnet_refresh()
785 sysadm 1.1 {
786 sysadm 1.14 clearscr();
787     moveto(1, 0);
788 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
789 sysadm 1.20 for (int i = 2; i < 19; i++)
790 sysadm 1.14 {
791     moveto(i, 0);
792 sysadm 1.23 prints("|");
793 sysadm 1.14 moveto(i, 79);
794 sysadm 1.23 prints("|");
795 sysadm 1.14 }
796     moveto(19, 0);
797 sysadm 1.23 prints("|-----------------------------------------------------------------------------|");
798 sysadm 1.14 moveto(22, 0);
799 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
800 sysadm 1.14 moveto(23, 0);
801 sysadm 1.57 prints(" [\x1b[1;32mCtrl+C\x1b[m]退出");
802 sysadm 1.13
803 sysadm 1.14 iflush();
804 sysadm 1.1
805 sysadm 1.14 return 0;
806 sysadm 1.1 }
807    
808 sysadm 1.43 int bbsnet_selchange()
809 sysadm 1.1 {
810 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
811    
812 sysadm 1.14 moveto(20, 0);
813     clrtoeol();
814 sysadm 1.57 prints("|\x1b[1m单位:\x1b[1;33m%-18s\x1b[m 站名:\x1b[1;33m%s\x1b[m",
815 sysadm 1.43 bbsnet_conf[i].host2, bbsnet_conf[i].host1);
816 sysadm 1.14 moveto(20, 79);
817 sysadm 1.23 prints("|");
818 sysadm 1.14 moveto(21, 0);
819     clrtoeol();
820 sysadm 1.57 prints("|\x1b[1m连往:\x1b[1;33m%-20s", bbsnet_conf[i].ip);
821 sysadm 1.43 if (bbsnet_conf[i].port != 23)
822 sysadm 1.20 {
823 sysadm 1.43 prints(" %d", bbsnet_conf[i].port);
824 sysadm 1.20 }
825 sysadm 1.14 prints("\x1b[m");
826     moveto(21, 79);
827 sysadm 1.23 prints("|");
828 sysadm 1.14 iflush();
829 sysadm 1.1
830 sysadm 1.14 return 0;
831 sysadm 1.1 }
832    
833 sysadm 1.14 int bbs_net()
834 sysadm 1.1 {
835 sysadm 1.43 int ch, i;
836 sysadm 1.1
837 sysadm 1.17 load_bbsnet_conf(CONF_BBSNET);
838 sysadm 1.1
839 sysadm 1.14 clearscr();
840     bbsnet_refresh();
841 sysadm 1.41 display_menu(&bbsnet_menu);
842 sysadm 1.43 bbsnet_selchange();
843 sysadm 1.14
844 sysadm 1.26 while (!SYS_server_exit)
845 sysadm 1.1 {
846 sysadm 1.39 ch = igetch(100);
847 sysadm 1.52
848 sysadm 1.64 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
849     {
850     BBS_last_access_tm = time(NULL);
851     }
852    
853 sysadm 1.14 switch (ch)
854     {
855 sysadm 1.47 case KEY_NULL: // broken pipe
856 sysadm 1.64 log_error("KEY_NULL\n");
857 sysadm 1.40 goto cleanup;
858 sysadm 1.14 case KEY_TIMEOUT:
859 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
860 sysadm 1.14 {
861 sysadm 1.64 log_error("User input timeout\n");
862 sysadm 1.40 goto cleanup;
863 sysadm 1.14 }
864 sysadm 1.29 continue;
865 sysadm 1.64 case KEY_ESC:
866     case Ctrl('C'): // user cancel
867     goto cleanup;
868 sysadm 1.14 case CR:
869 sysadm 1.43 bbsnet_connect(bbsnet_menu.menu_item_pos[0]);
870 sysadm 1.14 bbsnet_refresh();
871 sysadm 1.41 display_menu(&bbsnet_menu);
872 sysadm 1.43 bbsnet_selchange();
873 sysadm 1.14 break;
874     case KEY_UP:
875     for (i = 0; i < STATION_PER_LINE; i++)
876 sysadm 1.20 {
877 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
878 sysadm 1.20 }
879 sysadm 1.43 bbsnet_selchange();
880 sysadm 1.14 break;
881     case KEY_DOWN:
882     for (i = 0; i < STATION_PER_LINE; i++)
883 sysadm 1.20 {
884 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
885 sysadm 1.20 }
886 sysadm 1.43 bbsnet_selchange();
887 sysadm 1.14 break;
888     case KEY_LEFT:
889     menu_control(&bbsnet_menu, KEY_UP);
890 sysadm 1.43 bbsnet_selchange();
891 sysadm 1.14 break;
892     case KEY_RIGHT:
893     menu_control(&bbsnet_menu, KEY_DOWN);
894 sysadm 1.43 bbsnet_selchange();
895     break;
896 sysadm 1.44 case KEY_HOME:
897 sysadm 1.43 case KEY_PGUP:
898     menu_control(&bbsnet_menu, KEY_PGUP);
899     bbsnet_selchange();
900 sysadm 1.14 break;
901 sysadm 1.44 case KEY_END:
902     case KEY_PGDN:
903     menu_control(&bbsnet_menu, KEY_PGDN);
904     bbsnet_selchange();
905     break;
906 sysadm 1.14 default:
907     menu_control(&bbsnet_menu, ch);
908 sysadm 1.43 bbsnet_selchange();
909 sysadm 1.14 break;
910     }
911 sysadm 1.1 }
912    
913 sysadm 1.40 cleanup:
914     unload_bbsnet_conf();
915    
916 sysadm 1.14 return 0;
917 sysadm 1.1 }
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