/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.67 - (hide annotations)
Sat Oct 18 05:02:15 2025 UTC (4 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.66: +6 -8 lines
Content type: text/x-csrc 
Add user preferred charset selection and conversion
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 1.38 struct epoll_event ev, events[MAX_EVENTS];
219     int nfds, epollfd;
220     int stdin_read_wait = 0;
221     int stdout_write_wait = 0;
222     int sock_read_wait = 0;
223     int sock_write_wait = 0;
224 sysadm 1.26 struct hostent *p_host = NULL;
225 sysadm 1.31 int tos;
226 sysadm 1.26 char remote_addr[IP_ADDR_LEN];
227 sysadm 1.14 int remote_port;
228 sysadm 1.63 char local_addr[IP_ADDR_LEN];
229     int local_port;
230     socklen_t sock_len;
231 sysadm 1.56 time_t t_used = time(NULL);
232 sysadm 1.14 struct tm *tm_used;
233 sysadm 1.26 int ch;
234 sysadm 1.14
235 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
236     {
237     log_error("user_online_update(BBS_NET) error\n");
238     }
239    
240 sysadm 1.14 clearscr();
241    
242     moveto(0, 0);
243 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
244 sysadm 1.14 bbsnet_conf[n].host1, bbsnet_conf[n].ip);
245     iflush();
246    
247 sysadm 1.26 p_host = gethostbyname(bbsnet_conf[n].ip);
248 sysadm 1.14
249 sysadm 1.26 if (p_host == NULL)
250 sysadm 1.1 {
251 sysadm 1.57 prints("\033[1;31m查找主机名失败！\033[m\r\n");
252 sysadm 1.14 press_any_key();
253     return -1;
254 sysadm 1.1 }
255 sysadm 1.14
256     sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
257    
258     if (sock < 0)
259 sysadm 1.1 {
260 sysadm 1.57 prints("\033[1;31m无法创建socket！\033[m\r\n");
261 sysadm 1.14 press_any_key();
262     return -1;
263 sysadm 1.1 }
264    
265 sysadm 1.14 sin.sin_family = AF_INET;
266 sysadm 1.48 sin.sin_addr.s_addr = (BBS_address[0] != '\0' ? inet_addr(BBS_address) : INADDR_ANY);
267 sysadm 1.14 sin.sin_port = 0;
268    
269     if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
270     {
271 sysadm 1.31 log_error("Bind address %s:%u failed (%d)\n",
272     inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno);
273 sysadm 1.14 return -2;
274     }
275 sysadm 1.1
276 sysadm 1.49 memset(&sin, 0, sizeof(sin));
277 sysadm 1.14 sin.sin_family = AF_INET;
278 sysadm 1.26 sin.sin_addr = *(struct in_addr *)p_host->h_addr_list[0];
279 sysadm 1.14 sin.sin_port = htons(bbsnet_conf[n].port);
280    
281 sysadm 1.21 strncpy(remote_addr, inet_ntoa(sin.sin_addr), sizeof(remote_addr) - 1);
282     remote_addr[sizeof(remote_addr) - 1] = '\0';
283 sysadm 1.14 remote_port = ntohs(sin.sin_port);
284    
285 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");
286 sysadm 1.14 process_bar(0, MAX_PROCESS_BAR_LEN);
287 sysadm 1.29
288 sysadm 1.39 // Set socket as non-blocking
289     flags_sock = fcntl(sock, F_GETFL, 0);
290     fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK);
291    
292     // Set STDIN/STDOUT as non-blocking
293     flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0);
294     flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0);
295     fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK);
296     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK);
297    
298 sysadm 1.38 epollfd = epoll_create1(0);
299     if (epollfd < 0)
300     {
301     log_error("epoll_create1() error (%d)\n", errno);
302     return -1;
303     }
304    
305 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
306 sysadm 1.38 ev.data.fd = sock;
307     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
308     {
309     log_error("epoll_ctl(socket) error (%d)\n", errno);
310 sysadm 1.39 goto cleanup;
311 sysadm 1.38 }
312    
313 sysadm 1.59 ev.events = EPOLLIN | EPOLLET;
314 sysadm 1.38 ev.data.fd = STDIN_FILENO;
315     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
316     {
317     log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
318 sysadm 1.39 goto cleanup;
319 sysadm 1.38 }
320    
321     while (!SYS_server_exit)
322 sysadm 1.29 {
323 sysadm 1.38 if ((ret = connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0)
324 sysadm 1.29 {
325 sysadm 1.38 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
326     {
327     // Use select / epoll to check writability of the socket,
328     // then use getsockopt to check the status of the socket.
329     // See man connect(2)
330     break;
331     }
332     else if (errno == EINTR)
333     {
334     continue;
335     }
336     else
337     {
338     log_error("connect(socket) error (%d)\n", errno);
339 sysadm 1.39
340 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
341 sysadm 1.38 press_any_key();
342 sysadm 1.39
343     goto cleanup;
344 sysadm 1.38 }
345 sysadm 1.29 }
346     }
347    
348 sysadm 1.38 for (int j = 0; j < MAX_PROCESS_BAR_LEN && !sock_connected && !SYS_server_exit; j++)
349 sysadm 1.1 {
350 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 500); // 0.5 second
351 sysadm 1.29
352 sysadm 1.38 if (nfds < 0)
353 sysadm 1.20 {
354 sysadm 1.29 if (errno != EINTR)
355     {
356 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
357 sysadm 1.39 break;
358 sysadm 1.29 }
359 sysadm 1.20 }
360 sysadm 1.38 else if (nfds == 0) // timeout
361     {
362     process_bar(j + 1, MAX_PROCESS_BAR_LEN);
363     }
364     else // ret > 0
365 sysadm 1.14 {
366 sysadm 1.38 for (int i = 0; i < nfds; i++)
367 sysadm 1.29 {
368 sysadm 1.38 if (events[i].data.fd == sock)
369     {
370     len = sizeof(error);
371     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&len) < 0)
372     {
373     log_error("getsockopt() error (%d) !\n", error);
374 sysadm 1.39 goto cleanup;
375 sysadm 1.38 }
376     if (error == 0)
377     {
378     sock_connected = 1;
379     }
380     }
381     else if (events[i].data.fd == STDIN_FILENO)
382     {
383     ch = igetch(0);
384 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
385 sysadm 1.38 {
386 sysadm 1.39 goto cleanup;
387 sysadm 1.38 }
388     }
389 sysadm 1.29 }
390 sysadm 1.14 }
391 sysadm 1.12 }
392 sysadm 1.38 if (SYS_server_exit)
393     {
394 sysadm 1.39 goto cleanup;
395 sysadm 1.38 }
396     if (!sock_connected)
397 sysadm 1.12 {
398 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
399 sysadm 1.14 press_any_key();
400 sysadm 1.39
401     goto cleanup;
402 sysadm 1.12 }
403 sysadm 1.29
404 sysadm 1.31 tos = IPTOS_LOWDELAY;
405     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
406     {
407     log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
408     }
409 sysadm 1.14
410 sysadm 1.63 sock_len = sizeof(sin);
411     if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
412     {
413     log_error("getsockname() error: %d", errno);
414     goto cleanup;
415     }
416    
417     strncpy(local_addr, inet_ntoa(sin.sin_addr), sizeof(local_addr) - 1);
418     local_addr[sizeof(local_addr) - 1] = '\0';
419     local_port = ntohs(sin.sin_port);
420    
421 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
422 sysadm 1.33 iflush();
423 sysadm 1.63 log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n",
424     remote_addr, remote_port, local_addr, local_port, BBS_username);
425 sysadm 1.14
426 sysadm 1.67 input_cd = iconv_open(bbsnet_conf[n].charset, stdio_charset);
427 sysadm 1.60 if (input_cd == (iconv_t)(-1))
428     {
429 sysadm 1.67 log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, bbsnet_conf[n].charset, errno);
430 sysadm 1.60 goto cleanup;
431     }
432 sysadm 1.67 output_cd = iconv_open(stdio_charset, bbsnet_conf[n].charset);
433     if (output_cd == (iconv_t)(-1))
434 sysadm 1.60 {
435 sysadm 1.67 log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, stdio_charset, errno);
436 sysadm 1.60 iconv_close(input_cd);
437     goto cleanup;
438     }
439    
440 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
441     ev.data.fd = sock;
442     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
443     {
444     log_error("epoll_ctl(socket) error (%d)\n", errno);
445 sysadm 1.39 goto cleanup;
446 sysadm 1.38 }
447    
448 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
449 sysadm 1.38 ev.data.fd = STDOUT_FILENO;
450     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
451     {
452     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
453 sysadm 1.39 goto cleanup;
454 sysadm 1.38 }
455    
456 sysadm 1.50 BBS_last_access_tm = t_used = time(NULL);
457 sysadm 1.14 loop = 1;
458    
459 sysadm 1.26 while (loop && !SYS_server_exit)
460 sysadm 1.12 {
461 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
462     {
463     log_error("SSH channel is closed\n");
464     loop = 0;
465     break;
466     }
467    
468 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
469 sysadm 1.33
470 sysadm 1.38 if (nfds < 0)
471 sysadm 1.14 {
472 sysadm 1.38 if (errno != EINTR)
473 sysadm 1.14 {
474 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
475     break;
476 sysadm 1.14 }
477 sysadm 1.38 continue;
478 sysadm 1.14 }
479 sysadm 1.38 else if (nfds == 0) // timeout
480 sysadm 1.1 {
481 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
482 sysadm 1.28 {
483 sysadm 1.38 break;
484 sysadm 1.28 }
485 sysadm 1.1 }
486 sysadm 1.38
487     for (int i = 0; i < nfds; i++)
488 sysadm 1.1 {
489 sysadm 1.59 if (events[i].data.fd == STDIN_FILENO)
490 sysadm 1.14 {
491 sysadm 1.38 stdin_read_wait = 1;
492 sysadm 1.59 }
493    
494     if (events[i].data.fd == sock)
495     {
496     if (events[i].events & EPOLLIN)
497     {
498     sock_read_wait = 1;
499     }
500     if (events[i].events & EPOLLOUT)
501     {
502     sock_write_wait = 1;
503     }
504     }
505    
506     if (events[i].data.fd == STDOUT_FILENO)
507     {
508     stdout_write_wait = 1;
509     }
510     }
511    
512     if (stdin_read_wait)
513     {
514     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
515     {
516     if (SSH_v2)
517 sysadm 1.33 {
518 sysadm 1.59 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
519     if (ret == SSH_ERROR)
520 sysadm 1.47 {
521 sysadm 1.59 log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
522     loop = 0;
523     break;
524 sysadm 1.47 }
525 sysadm 1.59 else if (ret == SSH_EOF)
526 sysadm 1.47 {
527 sysadm 1.59 stdin_read_wait = 0;
528     loop = 0;
529     break;
530 sysadm 1.47 }
531 sysadm 1.59 else if (ret == 0)
532 sysadm 1.33 {
533 sysadm 1.59 stdin_read_wait = 0;
534     break; // Check whether channel is still open
535 sysadm 1.38 }
536 sysadm 1.59 }
537     else
538     {
539     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
540     }
541     if (ret < 0)
542     {
543     if (errno == EAGAIN || errno == EWOULDBLOCK)
544 sysadm 1.38 {
545     stdin_read_wait = 0;
546     break;
547     }
548 sysadm 1.59 else if (errno == EINTR)
549     {
550     continue;
551     }
552 sysadm 1.38 else
553     {
554 sysadm 1.59 log_error("read(STDIN) error (%d)\n", errno);
555     loop = 0;
556     break;
557     }
558     }
559     else if (ret == 0) // broken pipe
560     {
561     #ifdef _DEBUG
562     log_error("read(STDIN) EOF\n");
563     #endif
564     stdin_read_wait = 0;
565     loop = 0;
566     break;
567     }
568     else
569     {
570     input_buf_len += ret;
571     BBS_last_access_tm = time(NULL);
572 sysadm 1.58
573 sysadm 1.59 // Refresh current action while user input
574     if (user_online_update("BBS_NET") < 0)
575     {
576     log_error("user_online_update(BBS_NET) error\n");
577     }
578 sysadm 1.58
579 sysadm 1.59 continue;
580 sysadm 1.33 }
581 sysadm 1.36 }
582 sysadm 1.59 }
583 sysadm 1.29
584 sysadm 1.59 if (sock_write_wait)
585     {
586 sysadm 1.60 if (input_buf_offset < input_buf_len)
587 sysadm 1.36 {
588 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);
589 sysadm 1.60 if (ret < 0)
590     {
591 sysadm 1.66 log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len);
592 sysadm 1.60 }
593     }
594    
595     while (input_conv_offset < input_conv_len && !SYS_server_exit)
596     {
597     ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
598 sysadm 1.59 if (ret < 0)
599 sysadm 1.36 {
600 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
601 sysadm 1.36 {
602 sysadm 1.59 sock_write_wait = 0;
603     break;
604 sysadm 1.38 }
605 sysadm 1.59 else if (errno == EINTR)
606 sysadm 1.38 {
607 sysadm 1.59 continue;
608     }
609     else
610     {
611     log_error("write(socket) error (%d)\n", errno);
612 sysadm 1.36 loop = 0;
613 sysadm 1.38 break;
614     }
615 sysadm 1.59 }
616     else if (ret == 0) // broken pipe
617     {
618     #ifdef _DEBUG
619     log_error("write(socket) EOF\n");
620     #endif
621     sock_write_wait = 0;
622     loop = 0;
623     break;
624     }
625     else
626     {
627 sysadm 1.60 input_conv_offset += ret;
628     if (input_conv_offset >= input_conv_len) // Output buffer complete
629 sysadm 1.38 {
630 sysadm 1.60 input_conv_offset = 0;
631     input_conv_len = 0;
632 sysadm 1.59 break;
633 sysadm 1.36 }
634 sysadm 1.59 continue;
635 sysadm 1.36 }
636 sysadm 1.14 }
637 sysadm 1.59 }
638 sysadm 1.36
639 sysadm 1.59 if (sock_read_wait)
640     {
641     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
642 sysadm 1.14 {
643 sysadm 1.59 ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
644     if (ret < 0)
645 sysadm 1.14 {
646 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
647 sysadm 1.38 {
648 sysadm 1.59 sock_read_wait = 0;
649     break;
650 sysadm 1.38 }
651 sysadm 1.59 else if (errno == EINTR)
652 sysadm 1.33 {
653 sysadm 1.59 continue;
654 sysadm 1.38 }
655     else
656     {
657 sysadm 1.59 log_error("read(socket) error (%d)\n", errno);
658     loop = 0;
659     break;
660 sysadm 1.33 }
661     }
662 sysadm 1.59 else if (ret == 0) // broken pipe
663     {
664     #ifdef _DEBUG
665     log_error("read(socket) EOF\n");
666     #endif
667     sock_read_wait = 0;
668     loop = 0;
669     break;
670     }
671     else
672     {
673     output_buf_len += ret;
674     continue;
675     }
676 sysadm 1.36 }
677 sysadm 1.59 }
678 sysadm 1.36
679 sysadm 1.59 if (stdout_write_wait)
680     {
681 sysadm 1.60 if (output_buf_offset < output_buf_len)
682     {
683 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);
684 sysadm 1.60 if (ret < 0)
685     {
686 sysadm 1.66 log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len);
687 sysadm 1.60 }
688     }
689    
690     while (output_conv_offset < output_conv_len && !SYS_server_exit)
691 sysadm 1.36 {
692 sysadm 1.59 if (SSH_v2)
693 sysadm 1.36 {
694 sysadm 1.60 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
695 sysadm 1.59 if (ret == SSH_ERROR)
696 sysadm 1.47 {
697 sysadm 1.59 log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
698     loop = 0;
699     break;
700 sysadm 1.47 }
701 sysadm 1.59 }
702     else
703     {
704 sysadm 1.60 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
705 sysadm 1.59 }
706     if (ret < 0)
707     {
708     if (errno == EAGAIN || errno == EWOULDBLOCK)
709 sysadm 1.47 {
710 sysadm 1.59 stdout_write_wait = 0;
711     break;
712 sysadm 1.47 }
713 sysadm 1.59 else if (errno == EINTR)
714 sysadm 1.38 {
715 sysadm 1.59 continue;
716 sysadm 1.38 }
717 sysadm 1.59 else
718 sysadm 1.33 {
719 sysadm 1.59 log_error("write(STDOUT) error (%d)\n", errno);
720 sysadm 1.36 loop = 0;
721 sysadm 1.38 break;
722     }
723 sysadm 1.59 }
724     else if (ret == 0) // broken pipe
725     {
726     #ifdef _DEBUG
727     log_error("write(STDOUT) EOF\n");
728     #endif
729     stdout_write_wait = 0;
730     loop = 0;
731     break;
732     }
733     else
734     {
735 sysadm 1.60 output_conv_offset += ret;
736     if (output_conv_offset >= output_conv_len) // Output buffer complete
737 sysadm 1.38 {
738 sysadm 1.60 output_conv_offset = 0;
739     output_conv_len = 0;
740 sysadm 1.59 break;
741 sysadm 1.36 }
742 sysadm 1.59 continue;
743 sysadm 1.36 }
744 sysadm 1.14 }
745 sysadm 1.1 }
746     }
747    
748 sysadm 1.60 iconv_close(input_cd);
749     iconv_close(output_cd);
750    
751 sysadm 1.39 cleanup:
752     if (close(epollfd) < 0)
753     {
754     log_error("close(epoll) error (%d)\n");
755     }
756    
757 sysadm 1.36 // Restore STDIN/STDOUT flags
758     fcntl(STDIN_FILENO, F_SETFL, flags_stdin);
759     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout);
760    
761     // Restore socket flags
762     fcntl(sock, F_SETFL, flags_sock);
763    
764 sysadm 1.14 if (close(sock) == -1)
765     {
766     log_error("Close socket failed\n");
767     }
768 sysadm 1.1
769 sysadm 1.50 t_used = time(NULL) - t_used;
770 sysadm 1.14 tm_used = gmtime(&t_used);
771 sysadm 1.8
772 sysadm 1.46 log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n",
773 sysadm 1.47 tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min,
774     tm_used->tm_sec);
775 sysadm 1.8
776 sysadm 1.14 return 0;
777 sysadm 1.1 }
778    
779     static int
780 sysadm 1.14 bbsnet_refresh()
781 sysadm 1.1 {
782 sysadm 1.14 clearscr();
783     moveto(1, 0);
784 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
785 sysadm 1.20 for (int i = 2; i < 19; i++)
786 sysadm 1.14 {
787     moveto(i, 0);
788 sysadm 1.23 prints("|");
789 sysadm 1.14 moveto(i, 79);
790 sysadm 1.23 prints("|");
791 sysadm 1.14 }
792     moveto(19, 0);
793 sysadm 1.23 prints("|-----------------------------------------------------------------------------|");
794 sysadm 1.14 moveto(22, 0);
795 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
796 sysadm 1.14 moveto(23, 0);
797 sysadm 1.57 prints(" [\x1b[1;32mCtrl+C\x1b[m]退出");
798 sysadm 1.13
799 sysadm 1.14 iflush();
800 sysadm 1.1
801 sysadm 1.14 return 0;
802 sysadm 1.1 }
803    
804 sysadm 1.43 int bbsnet_selchange()
805 sysadm 1.1 {
806 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
807    
808 sysadm 1.14 moveto(20, 0);
809     clrtoeol();
810 sysadm 1.57 prints("|\x1b[1m单位:\x1b[1;33m%-18s\x1b[m 站名:\x1b[1;33m%s\x1b[m",
811 sysadm 1.43 bbsnet_conf[i].host2, bbsnet_conf[i].host1);
812 sysadm 1.14 moveto(20, 79);
813 sysadm 1.23 prints("|");
814 sysadm 1.14 moveto(21, 0);
815     clrtoeol();
816 sysadm 1.57 prints("|\x1b[1m连往:\x1b[1;33m%-20s", bbsnet_conf[i].ip);
817 sysadm 1.43 if (bbsnet_conf[i].port != 23)
818 sysadm 1.20 {
819 sysadm 1.43 prints(" %d", bbsnet_conf[i].port);
820 sysadm 1.20 }
821 sysadm 1.14 prints("\x1b[m");
822     moveto(21, 79);
823 sysadm 1.23 prints("|");
824 sysadm 1.14 iflush();
825 sysadm 1.1
826 sysadm 1.14 return 0;
827 sysadm 1.1 }
828    
829 sysadm 1.14 int bbs_net()
830 sysadm 1.1 {
831 sysadm 1.43 int ch, i;
832 sysadm 1.1
833 sysadm 1.17 load_bbsnet_conf(CONF_BBSNET);
834 sysadm 1.1
835 sysadm 1.14 clearscr();
836     bbsnet_refresh();
837 sysadm 1.41 display_menu(&bbsnet_menu);
838 sysadm 1.43 bbsnet_selchange();
839 sysadm 1.14
840 sysadm 1.26 while (!SYS_server_exit)
841 sysadm 1.1 {
842 sysadm 1.39 ch = igetch(100);
843 sysadm 1.52
844 sysadm 1.64 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
845     {
846     BBS_last_access_tm = time(NULL);
847     }
848    
849 sysadm 1.14 switch (ch)
850     {
851 sysadm 1.47 case KEY_NULL: // broken pipe
852 sysadm 1.64 log_error("KEY_NULL\n");
853 sysadm 1.40 goto cleanup;
854 sysadm 1.14 case KEY_TIMEOUT:
855 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
856 sysadm 1.14 {
857 sysadm 1.64 log_error("User input timeout\n");
858 sysadm 1.40 goto cleanup;
859 sysadm 1.14 }
860 sysadm 1.29 continue;
861 sysadm 1.64 case KEY_ESC:
862     case Ctrl('C'): // user cancel
863     goto cleanup;
864 sysadm 1.14 case CR:
865 sysadm 1.43 bbsnet_connect(bbsnet_menu.menu_item_pos[0]);
866 sysadm 1.14 bbsnet_refresh();
867 sysadm 1.41 display_menu(&bbsnet_menu);
868 sysadm 1.43 bbsnet_selchange();
869 sysadm 1.14 break;
870     case KEY_UP:
871     for (i = 0; i < STATION_PER_LINE; i++)
872 sysadm 1.20 {
873 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
874 sysadm 1.20 }
875 sysadm 1.43 bbsnet_selchange();
876 sysadm 1.14 break;
877     case KEY_DOWN:
878     for (i = 0; i < STATION_PER_LINE; i++)
879 sysadm 1.20 {
880 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
881 sysadm 1.20 }
882 sysadm 1.43 bbsnet_selchange();
883 sysadm 1.14 break;
884     case KEY_LEFT:
885     menu_control(&bbsnet_menu, KEY_UP);
886 sysadm 1.43 bbsnet_selchange();
887 sysadm 1.14 break;
888     case KEY_RIGHT:
889     menu_control(&bbsnet_menu, KEY_DOWN);
890 sysadm 1.43 bbsnet_selchange();
891     break;
892 sysadm 1.44 case KEY_HOME:
893 sysadm 1.43 case KEY_PGUP:
894     menu_control(&bbsnet_menu, KEY_PGUP);
895     bbsnet_selchange();
896 sysadm 1.14 break;
897 sysadm 1.44 case KEY_END:
898     case KEY_PGDN:
899     menu_control(&bbsnet_menu, KEY_PGDN);
900     bbsnet_selchange();
901     break;
902 sysadm 1.14 default:
903     menu_control(&bbsnet_menu, ch);
904 sysadm 1.43 bbsnet_selchange();
905 sysadm 1.14 break;
906     }
907 sysadm 1.1 }
908    
909 sysadm 1.40 cleanup:
910     unload_bbsnet_conf();
911    
912 sysadm 1.14 return 0;
913 sysadm 1.1 }
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