/[LeafOK_CVS]/lbbs/src/bbs_net.c
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Revision 1.62 - (hide annotations)
Wed Oct 8 03:34:52 2025 UTC (5 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.61: +6 -4 lines
Content type: text/x-csrc 
Refine BBSNET: Add BBS_NET_DEFAULT_CHARSET
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 sysadm 1.60 #include <iconv.h>
35 sysadm 1.55 #include <libssh/libssh.h>
36     #include <libssh/server.h>
37     #include <libssh/callbacks.h>
38     #include <netinet/in.h>
39     #include <netinet/ip.h>
40 sysadm 1.29 #include <sys/select.h>
41 sysadm 1.1 #include <sys/ioctl.h>
42     #include <sys/socket.h>
43 sysadm 1.38 #include <sys/epoll.h>
44 sysadm 1.1
45 sysadm 1.26 #define MENU_CONF_DELIM " \t\r\n"
46    
47 sysadm 1.14 #define MAX_PROCESS_BAR_LEN 30
48     #define MAXSTATION 26 * 2
49     #define STATION_PER_LINE 4
50 sysadm 1.1
51 sysadm 1.62 #define BBS_NET_DEFAULT_CHARSET "UTF-8"
52    
53 sysadm 1.1 struct _bbsnet_conf
54     {
55 sysadm 1.14 char host1[20];
56     char host2[40];
57     char ip[40];
58 sysadm 1.24 in_port_t port;
59 sysadm 1.60 char charset[20];
60 sysadm 1.1 } bbsnet_conf[MAXSTATION];
61    
62     MENU_SET bbsnet_menu;
63    
64 sysadm 1.14 int load_bbsnet_conf(const char *file_config)
65 sysadm 1.1 {
66 sysadm 1.14 FILE *fp;
67     MENU *p_menu;
68 sysadm 1.41 MENU_ITEM *p_menu_item;
69     MENU_ITEM_ID menu_item_id;
70 sysadm 1.60 char t[256], *t1, *t2, *t3, *t4, *t5, *saveptr;
71 sysadm 1.14
72     fp = fopen(file_config, "r");
73     if (fp == NULL)
74 sysadm 1.20 {
75 sysadm 1.14 return -1;
76 sysadm 1.20 }
77 sysadm 1.14
78 sysadm 1.41 bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU));
79     if (bbsnet_menu.p_menu_pool == NULL)
80     {
81     log_error("calloc(p_menu_pool) error\n");
82     return -3;
83     }
84     bbsnet_menu.menu_count = 1;
85    
86     bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM));
87     if (bbsnet_menu.p_menu_item_pool == NULL)
88     {
89     log_error("calloc(p_menu_item_pool) error\n");
90     return -3;
91     }
92     bbsnet_menu.menu_item_count = MAXSTATION;
93    
94     p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
95 sysadm 1.40
96 sysadm 1.21 strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
97     p_menu->name[sizeof(p_menu->name) - 1] = '\0';
98 sysadm 1.14 p_menu->title.show = 0;
99 sysadm 1.41 p_menu->screen_show = 0;
100 sysadm 1.1
101 sysadm 1.41 menu_item_id = 0;
102     while (fgets(t, 255, fp) && menu_item_id < MAXSTATION)
103 sysadm 1.14 {
104 sysadm 1.26 t1 = strtok_r(t, MENU_CONF_DELIM, &saveptr);
105     t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
106     t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
107     t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
108 sysadm 1.60 t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
109 sysadm 1.14
110 sysadm 1.60 if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL || t5 == NULL || t[0] == '#' || t[0] == '*')
111 sysadm 1.18 {
112 sysadm 1.14 continue;
113 sysadm 1.18 }
114    
115 sysadm 1.41 strncpy(bbsnet_conf[menu_item_id].host1, t2, sizeof(bbsnet_conf[menu_item_id].host1) - 1);
116     bbsnet_conf[menu_item_id].host1[sizeof(bbsnet_conf[menu_item_id].host1) - 1] = '\0';
117     strncpy(bbsnet_conf[menu_item_id].host2, t1, sizeof(bbsnet_conf[menu_item_id].host2) - 1);
118     bbsnet_conf[menu_item_id].host2[sizeof(bbsnet_conf[menu_item_id].host2) - 1] = '\0';
119     strncpy(bbsnet_conf[menu_item_id].ip, t3, sizeof(bbsnet_conf[menu_item_id].ip) - 1);
120     bbsnet_conf[menu_item_id].ip[sizeof(bbsnet_conf[menu_item_id].ip) - 1] = '\0';
121     bbsnet_conf[menu_item_id].port = (in_port_t)(t4 ? atoi(t4) : 23);
122 sysadm 1.60 strncpy(bbsnet_conf[menu_item_id].charset, t5, sizeof(bbsnet_conf[menu_item_id].charset) - 1);
123     bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0';
124 sysadm 1.14
125 sysadm 1.41 p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id);
126     if (p_menu_item == NULL)
127     {
128     log_error("get_menu_item_by_id(%d) return NULL pointer\n", menu_item_id);
129     return -1;
130     }
131 sysadm 1.14
132 sysadm 1.41 p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE);
133     p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20);
134     snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id);
135     p_menu_item->submenu = 0;
136     p_menu_item->priv = 0;
137     p_menu_item->level = 0;
138     p_menu_item->name[0] =
139     (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id);
140     p_menu_item->name[1] = '\0';
141     snprintf(p_menu_item->text, sizeof(p_menu_item->text), "%c. %s",
142     p_menu_item->name[0], bbsnet_conf[menu_item_id].host1);
143    
144     p_menu->items[p_menu->item_count] = menu_item_id;
145     p_menu->item_count++;
146     menu_item_id++;
147     }
148    
149     bbsnet_menu.menu_item_count = (int16_t)menu_item_id;
150     bbsnet_menu.menu_id_path[0] = 0;
151     bbsnet_menu.menu_item_pos[0] = 0;
152     bbsnet_menu.choose_step = 0;
153 sysadm 1.14
154 sysadm 1.41 fclose(fp);
155 sysadm 1.14
156     return 0;
157 sysadm 1.1 }
158    
159 sysadm 1.40 void unload_bbsnet_conf(void)
160     {
161 sysadm 1.41 bbsnet_menu.menu_count = 0;
162     bbsnet_menu.menu_item_count = 0;
163    
164     free(bbsnet_menu.p_menu_pool);
165     bbsnet_menu.p_menu_pool = NULL;
166     free(bbsnet_menu.p_menu_item_pool);
167     bbsnet_menu.p_menu_item_pool = NULL;
168 sysadm 1.40 }
169    
170     void process_bar(int n, int len)
171 sysadm 1.1 {
172 sysadm 1.27 char buf[LINE_BUFFER_LEN];
173     char buf2[LINE_BUFFER_LEN];
174    
175     if (len > LINE_BUFFER_LEN)
176     {
177     len = LINE_BUFFER_LEN - 1;
178     }
179     if (n < 0)
180     {
181     n = 0;
182     }
183     else if (n > len)
184     {
185     n = len;
186     }
187 sysadm 1.14
188     moveto(4, 0);
189 sysadm 1.23 prints(" ------------------------------ \r\n");
190 sysadm 1.27 snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len);
191 sysadm 1.30 strncpy(buf2, buf, (size_t)n);
192 sysadm 1.27 buf2[n] = '\0';
193     prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n);
194 sysadm 1.23 prints(" ------------------------------ \r\n");
195 sysadm 1.14 iflush();
196 sysadm 1.1 }
197    
198 sysadm 1.60 int bbsnet_io_buf_conv(iconv_t cd, char *p_buf, int *p_buf_len, int *p_buf_offset, char *p_conv, size_t conv_size, int *p_conv_len)
199     {
200     char *in_buf;
201     char *out_buf;
202     size_t in_bytes;
203     size_t out_bytes;
204     int ret;
205    
206     in_buf = p_buf + *p_buf_offset;
207     in_bytes = (size_t)(*p_buf_len - *p_buf_offset);
208     out_buf = p_conv + *p_conv_len;
209     out_bytes = conv_size - (size_t)(*p_conv_len);
210    
211     while (in_bytes > 0)
212     {
213     ret = (int)iconv(cd, &in_buf, &in_bytes, &out_buf, &out_bytes);
214     if (ret == -1)
215     {
216     if (errno == EINVAL) // Incomplete
217     {
218 sysadm 1.61 #ifdef _DEBUG
219     log_error("iconv(inbytes=%d, outbytes=%d) error: EINVAL\n", in_bytes, out_bytes);
220     #endif
221 sysadm 1.60 *p_buf_len = (int)(p_buf + *p_buf_len - in_buf);
222     *p_buf_offset = 0;
223     *p_conv_len = (int)(conv_size - out_bytes);
224     memmove(p_buf, in_buf, (size_t)(*p_buf_len));
225    
226     break;
227     }
228     else if (errno == E2BIG)
229     {
230     log_error("iconv(inbytes=%d, outbytes=%d) error: E2BIG\n", in_bytes, out_bytes);
231     return -1;
232     }
233     else if (errno == EILSEQ)
234     {
235     if (in_bytes > out_bytes || out_bytes <= 0)
236     {
237 sysadm 1.61 log_error("iconv(inbytes=%d, outbytes=%d) error: EILSEQ and E2BIG\n", in_bytes, out_bytes);
238     return -2;
239 sysadm 1.60 }
240    
241 sysadm 1.61 *out_buf = *in_buf;
242     in_buf++;
243     out_buf++;
244 sysadm 1.60 in_bytes--;
245     out_bytes--;
246    
247     continue;
248     }
249     }
250     else
251     {
252     *p_buf_len = 0;
253     *p_buf_offset = 0;
254     *p_conv_len = (int)(conv_size - out_bytes);
255    
256     break;
257     }
258     }
259    
260     return 0;
261     }
262    
263 sysadm 1.14 int bbsnet_connect(int n)
264 sysadm 1.1 {
265 sysadm 1.36 int sock, ret, loop, error;
266 sysadm 1.38 int sock_connected = 0;
267 sysadm 1.36 int flags_sock;
268     int flags_stdin;
269     int flags_stdout;
270     int len;
271 sysadm 1.14 struct sockaddr_in sin;
272 sysadm 1.36 char input_buf[LINE_BUFFER_LEN];
273     char output_buf[LINE_BUFFER_LEN];
274     int input_buf_len = 0;
275     int output_buf_len = 0;
276     int input_buf_offset = 0;
277     int output_buf_offset = 0;
278 sysadm 1.60 iconv_t input_cd = NULL;
279     char input_conv[LINE_BUFFER_LEN * 2];
280     char output_conv[LINE_BUFFER_LEN * 2];
281     int input_conv_len = 0;
282     int output_conv_len = 0;
283     int input_conv_offset = 0;
284     int output_conv_offset = 0;
285     iconv_t output_cd = NULL;
286 sysadm 1.38 struct epoll_event ev, events[MAX_EVENTS];
287     int nfds, epollfd;
288     int stdin_read_wait = 0;
289     int stdout_write_wait = 0;
290     int sock_read_wait = 0;
291     int sock_write_wait = 0;
292 sysadm 1.26 struct hostent *p_host = NULL;
293 sysadm 1.31 int tos;
294 sysadm 1.26 char remote_addr[IP_ADDR_LEN];
295 sysadm 1.14 int remote_port;
296 sysadm 1.56 time_t t_used = time(NULL);
297 sysadm 1.14 struct tm *tm_used;
298 sysadm 1.26 int ch;
299 sysadm 1.14
300 sysadm 1.53 if (user_online_update("BBS_NET") < 0)
301     {
302     log_error("user_online_update(BBS_NET) error\n");
303     }
304    
305 sysadm 1.14 clearscr();
306    
307     moveto(0, 0);
308 sysadm 1.57 prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
309 sysadm 1.14 bbsnet_conf[n].host1, bbsnet_conf[n].ip);
310     iflush();
311    
312 sysadm 1.26 p_host = gethostbyname(bbsnet_conf[n].ip);
313 sysadm 1.14
314 sysadm 1.26 if (p_host == NULL)
315 sysadm 1.1 {
316 sysadm 1.57 prints("\033[1;31m查找主机名失败！\033[m\r\n");
317 sysadm 1.14 press_any_key();
318     return -1;
319 sysadm 1.1 }
320 sysadm 1.14
321     sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
322    
323     if (sock < 0)
324 sysadm 1.1 {
325 sysadm 1.57 prints("\033[1;31m无法创建socket！\033[m\r\n");
326 sysadm 1.14 press_any_key();
327     return -1;
328 sysadm 1.1 }
329    
330 sysadm 1.14 sin.sin_family = AF_INET;
331 sysadm 1.48 sin.sin_addr.s_addr = (BBS_address[0] != '\0' ? inet_addr(BBS_address) : INADDR_ANY);
332 sysadm 1.14 sin.sin_port = 0;
333    
334     if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
335     {
336 sysadm 1.31 log_error("Bind address %s:%u failed (%d)\n",
337     inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno);
338 sysadm 1.14 return -2;
339     }
340 sysadm 1.1
341 sysadm 1.49 memset(&sin, 0, sizeof(sin));
342 sysadm 1.14 sin.sin_family = AF_INET;
343 sysadm 1.26 sin.sin_addr = *(struct in_addr *)p_host->h_addr_list[0];
344 sysadm 1.14 sin.sin_port = htons(bbsnet_conf[n].port);
345    
346 sysadm 1.21 strncpy(remote_addr, inet_ntoa(sin.sin_addr), sizeof(remote_addr) - 1);
347     remote_addr[sizeof(remote_addr) - 1] = '\0';
348 sysadm 1.14 remote_port = ntohs(sin.sin_port);
349    
350 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");
351 sysadm 1.14 process_bar(0, MAX_PROCESS_BAR_LEN);
352 sysadm 1.29
353 sysadm 1.39 // Set socket as non-blocking
354     flags_sock = fcntl(sock, F_GETFL, 0);
355     fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK);
356    
357     // Set STDIN/STDOUT as non-blocking
358     flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0);
359     flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0);
360     fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK);
361     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK);
362    
363 sysadm 1.38 epollfd = epoll_create1(0);
364     if (epollfd < 0)
365     {
366     log_error("epoll_create1() error (%d)\n", errno);
367     return -1;
368     }
369    
370 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
371 sysadm 1.38 ev.data.fd = sock;
372     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
373     {
374     log_error("epoll_ctl(socket) error (%d)\n", errno);
375 sysadm 1.39 goto cleanup;
376 sysadm 1.38 }
377    
378 sysadm 1.59 ev.events = EPOLLIN | EPOLLET;
379 sysadm 1.38 ev.data.fd = STDIN_FILENO;
380     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
381     {
382     log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
383 sysadm 1.39 goto cleanup;
384 sysadm 1.38 }
385    
386     while (!SYS_server_exit)
387 sysadm 1.29 {
388 sysadm 1.38 if ((ret = connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0)
389 sysadm 1.29 {
390 sysadm 1.38 if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
391     {
392     // Use select / epoll to check writability of the socket,
393     // then use getsockopt to check the status of the socket.
394     // See man connect(2)
395     break;
396     }
397     else if (errno == EINTR)
398     {
399     continue;
400     }
401     else
402     {
403     log_error("connect(socket) error (%d)\n", errno);
404 sysadm 1.39
405 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
406 sysadm 1.38 press_any_key();
407 sysadm 1.39
408     goto cleanup;
409 sysadm 1.38 }
410 sysadm 1.29 }
411     }
412    
413 sysadm 1.38 for (int j = 0; j < MAX_PROCESS_BAR_LEN && !sock_connected && !SYS_server_exit; j++)
414 sysadm 1.1 {
415 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 500); // 0.5 second
416 sysadm 1.29
417 sysadm 1.38 if (nfds < 0)
418 sysadm 1.20 {
419 sysadm 1.29 if (errno != EINTR)
420     {
421 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
422 sysadm 1.39 break;
423 sysadm 1.29 }
424 sysadm 1.20 }
425 sysadm 1.38 else if (nfds == 0) // timeout
426     {
427     process_bar(j + 1, MAX_PROCESS_BAR_LEN);
428     }
429     else // ret > 0
430 sysadm 1.14 {
431 sysadm 1.38 for (int i = 0; i < nfds; i++)
432 sysadm 1.29 {
433 sysadm 1.38 if (events[i].data.fd == sock)
434     {
435     len = sizeof(error);
436     if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&len) < 0)
437     {
438     log_error("getsockopt() error (%d) !\n", error);
439 sysadm 1.39 goto cleanup;
440 sysadm 1.38 }
441     if (error == 0)
442     {
443     sock_connected = 1;
444     }
445     }
446     else if (events[i].data.fd == STDIN_FILENO)
447     {
448     ch = igetch(0);
449 sysadm 1.45 if (ch == Ctrl('C') || ch == KEY_ESC)
450 sysadm 1.38 {
451 sysadm 1.39 goto cleanup;
452 sysadm 1.38 }
453     }
454 sysadm 1.29 }
455 sysadm 1.14 }
456 sysadm 1.12 }
457 sysadm 1.38 if (SYS_server_exit)
458     {
459 sysadm 1.39 goto cleanup;
460 sysadm 1.38 }
461     if (!sock_connected)
462 sysadm 1.12 {
463 sysadm 1.57 prints("\033[1;31m连接失败！\033[m\r\n");
464 sysadm 1.14 press_any_key();
465 sysadm 1.39
466     goto cleanup;
467 sysadm 1.12 }
468 sysadm 1.29
469 sysadm 1.31 tos = IPTOS_LOWDELAY;
470     if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
471     {
472     log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno);
473     }
474 sysadm 1.14
475 sysadm 1.57 prints("\033[1;31m连接成功！\033[m\r\n");
476 sysadm 1.33 iflush();
477 sysadm 1.46 log_common("BBSNET connect to %s:%d\n", remote_addr, remote_port);
478 sysadm 1.14
479 sysadm 1.62 input_cd = iconv_open(bbsnet_conf[n].charset, BBS_NET_DEFAULT_CHARSET);
480 sysadm 1.60 if (input_cd == (iconv_t)(-1))
481     {
482 sysadm 1.62 log_error("iconv_open(%s->%s) error: %d\n", BBS_NET_DEFAULT_CHARSET, bbsnet_conf[n].charset, errno);
483 sysadm 1.60 goto cleanup;
484     }
485 sysadm 1.62 output_cd = iconv_open(BBS_NET_DEFAULT_CHARSET, bbsnet_conf[n].charset);
486 sysadm 1.60 if (input_cd == (iconv_t)(-1))
487     {
488 sysadm 1.62 log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, BBS_NET_DEFAULT_CHARSET, errno);
489 sysadm 1.60 iconv_close(input_cd);
490     goto cleanup;
491     }
492    
493 sysadm 1.38 ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
494     ev.data.fd = sock;
495     if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
496     {
497     log_error("epoll_ctl(socket) error (%d)\n", errno);
498 sysadm 1.39 goto cleanup;
499 sysadm 1.38 }
500    
501 sysadm 1.59 ev.events = EPOLLOUT | EPOLLET;
502 sysadm 1.38 ev.data.fd = STDOUT_FILENO;
503     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
504     {
505     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
506 sysadm 1.39 goto cleanup;
507 sysadm 1.38 }
508    
509 sysadm 1.50 BBS_last_access_tm = t_used = time(NULL);
510 sysadm 1.14 loop = 1;
511    
512 sysadm 1.26 while (loop && !SYS_server_exit)
513 sysadm 1.12 {
514 sysadm 1.47 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
515     {
516     log_error("SSH channel is closed\n");
517     loop = 0;
518     break;
519     }
520    
521 sysadm 1.38 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
522 sysadm 1.33
523 sysadm 1.38 if (nfds < 0)
524 sysadm 1.14 {
525 sysadm 1.38 if (errno != EINTR)
526 sysadm 1.14 {
527 sysadm 1.38 log_error("epoll_wait() error (%d)\n", errno);
528     break;
529 sysadm 1.14 }
530 sysadm 1.38 continue;
531 sysadm 1.14 }
532 sysadm 1.38 else if (nfds == 0) // timeout
533 sysadm 1.1 {
534 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
535 sysadm 1.28 {
536 sysadm 1.38 break;
537 sysadm 1.28 }
538 sysadm 1.1 }
539 sysadm 1.38
540     for (int i = 0; i < nfds; i++)
541 sysadm 1.1 {
542 sysadm 1.59 if (events[i].data.fd == STDIN_FILENO)
543 sysadm 1.14 {
544 sysadm 1.38 stdin_read_wait = 1;
545 sysadm 1.59 }
546    
547     if (events[i].data.fd == sock)
548     {
549     if (events[i].events & EPOLLIN)
550     {
551     sock_read_wait = 1;
552     }
553     if (events[i].events & EPOLLOUT)
554     {
555     sock_write_wait = 1;
556     }
557     }
558    
559     if (events[i].data.fd == STDOUT_FILENO)
560     {
561     stdout_write_wait = 1;
562     }
563     }
564    
565     if (stdin_read_wait)
566     {
567     while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
568     {
569     if (SSH_v2)
570 sysadm 1.33 {
571 sysadm 1.59 ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
572     if (ret == SSH_ERROR)
573 sysadm 1.47 {
574 sysadm 1.59 log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
575     loop = 0;
576     break;
577 sysadm 1.47 }
578 sysadm 1.59 else if (ret == SSH_EOF)
579 sysadm 1.47 {
580 sysadm 1.59 stdin_read_wait = 0;
581     loop = 0;
582     break;
583 sysadm 1.47 }
584 sysadm 1.59 else if (ret == 0)
585 sysadm 1.33 {
586 sysadm 1.59 stdin_read_wait = 0;
587     break; // Check whether channel is still open
588 sysadm 1.38 }
589 sysadm 1.59 }
590     else
591     {
592     ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
593     }
594     if (ret < 0)
595     {
596     if (errno == EAGAIN || errno == EWOULDBLOCK)
597 sysadm 1.38 {
598     stdin_read_wait = 0;
599     break;
600     }
601 sysadm 1.59 else if (errno == EINTR)
602     {
603     continue;
604     }
605 sysadm 1.38 else
606     {
607 sysadm 1.59 log_error("read(STDIN) error (%d)\n", errno);
608     loop = 0;
609     break;
610     }
611     }
612     else if (ret == 0) // broken pipe
613     {
614     #ifdef _DEBUG
615     log_error("read(STDIN) EOF\n");
616     #endif
617     stdin_read_wait = 0;
618     loop = 0;
619     break;
620     }
621     else
622     {
623     input_buf_len += ret;
624     BBS_last_access_tm = time(NULL);
625 sysadm 1.58
626 sysadm 1.59 // Refresh current action while user input
627     if (user_online_update("BBS_NET") < 0)
628     {
629     log_error("user_online_update(BBS_NET) error\n");
630     }
631 sysadm 1.58
632 sysadm 1.59 continue;
633 sysadm 1.33 }
634 sysadm 1.36 }
635 sysadm 1.59 }
636 sysadm 1.29
637 sysadm 1.59 if (sock_write_wait)
638     {
639 sysadm 1.60 if (input_buf_offset < input_buf_len)
640 sysadm 1.36 {
641 sysadm 1.60 ret = bbsnet_io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len);
642     if (ret < 0)
643     {
644     log_error("bbsnet_io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len);
645     }
646     }
647    
648     while (input_conv_offset < input_conv_len && !SYS_server_exit)
649     {
650     ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
651 sysadm 1.59 if (ret < 0)
652 sysadm 1.36 {
653 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
654 sysadm 1.36 {
655 sysadm 1.59 sock_write_wait = 0;
656     break;
657 sysadm 1.38 }
658 sysadm 1.59 else if (errno == EINTR)
659 sysadm 1.38 {
660 sysadm 1.59 continue;
661     }
662     else
663     {
664     log_error("write(socket) error (%d)\n", errno);
665 sysadm 1.36 loop = 0;
666 sysadm 1.38 break;
667     }
668 sysadm 1.59 }
669     else if (ret == 0) // broken pipe
670     {
671     #ifdef _DEBUG
672     log_error("write(socket) EOF\n");
673     #endif
674     sock_write_wait = 0;
675     loop = 0;
676     break;
677     }
678     else
679     {
680 sysadm 1.60 input_conv_offset += ret;
681     if (input_conv_offset >= input_conv_len) // Output buffer complete
682 sysadm 1.38 {
683 sysadm 1.60 input_conv_offset = 0;
684     input_conv_len = 0;
685 sysadm 1.59 break;
686 sysadm 1.36 }
687 sysadm 1.59 continue;
688 sysadm 1.36 }
689 sysadm 1.14 }
690 sysadm 1.59 }
691 sysadm 1.36
692 sysadm 1.59 if (sock_read_wait)
693     {
694     while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
695 sysadm 1.14 {
696 sysadm 1.59 ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
697     if (ret < 0)
698 sysadm 1.14 {
699 sysadm 1.59 if (errno == EAGAIN || errno == EWOULDBLOCK)
700 sysadm 1.38 {
701 sysadm 1.59 sock_read_wait = 0;
702     break;
703 sysadm 1.38 }
704 sysadm 1.59 else if (errno == EINTR)
705 sysadm 1.33 {
706 sysadm 1.59 continue;
707 sysadm 1.38 }
708     else
709     {
710 sysadm 1.59 log_error("read(socket) error (%d)\n", errno);
711     loop = 0;
712     break;
713 sysadm 1.33 }
714     }
715 sysadm 1.59 else if (ret == 0) // broken pipe
716     {
717     #ifdef _DEBUG
718     log_error("read(socket) EOF\n");
719     #endif
720     sock_read_wait = 0;
721     loop = 0;
722     break;
723     }
724     else
725     {
726     output_buf_len += ret;
727     continue;
728     }
729 sysadm 1.36 }
730 sysadm 1.59 }
731 sysadm 1.36
732 sysadm 1.59 if (stdout_write_wait)
733     {
734 sysadm 1.60 if (output_buf_offset < output_buf_len)
735     {
736     ret = bbsnet_io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len);
737     if (ret < 0)
738     {
739     log_error("bbsnet_io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len);
740     }
741     }
742    
743     while (output_conv_offset < output_conv_len && !SYS_server_exit)
744 sysadm 1.36 {
745 sysadm 1.59 if (SSH_v2)
746 sysadm 1.36 {
747 sysadm 1.60 ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
748 sysadm 1.59 if (ret == SSH_ERROR)
749 sysadm 1.47 {
750 sysadm 1.59 log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
751     loop = 0;
752     break;
753 sysadm 1.47 }
754 sysadm 1.59 }
755     else
756     {
757 sysadm 1.60 ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
758 sysadm 1.59 }
759     if (ret < 0)
760     {
761     if (errno == EAGAIN || errno == EWOULDBLOCK)
762 sysadm 1.47 {
763 sysadm 1.59 stdout_write_wait = 0;
764     break;
765 sysadm 1.47 }
766 sysadm 1.59 else if (errno == EINTR)
767 sysadm 1.38 {
768 sysadm 1.59 continue;
769 sysadm 1.38 }
770 sysadm 1.59 else
771 sysadm 1.33 {
772 sysadm 1.59 log_error("write(STDOUT) error (%d)\n", errno);
773 sysadm 1.36 loop = 0;
774 sysadm 1.38 break;
775     }
776 sysadm 1.59 }
777     else if (ret == 0) // broken pipe
778     {
779     #ifdef _DEBUG
780     log_error("write(STDOUT) EOF\n");
781     #endif
782     stdout_write_wait = 0;
783     loop = 0;
784     break;
785     }
786     else
787     {
788 sysadm 1.60 output_conv_offset += ret;
789     if (output_conv_offset >= output_conv_len) // Output buffer complete
790 sysadm 1.38 {
791 sysadm 1.60 output_conv_offset = 0;
792     output_conv_len = 0;
793 sysadm 1.59 break;
794 sysadm 1.36 }
795 sysadm 1.59 continue;
796 sysadm 1.36 }
797 sysadm 1.14 }
798 sysadm 1.1 }
799     }
800    
801 sysadm 1.60 iconv_close(input_cd);
802     iconv_close(output_cd);
803    
804 sysadm 1.39 cleanup:
805     if (close(epollfd) < 0)
806     {
807     log_error("close(epoll) error (%d)\n");
808     }
809    
810 sysadm 1.36 // Restore STDIN/STDOUT flags
811     fcntl(STDIN_FILENO, F_SETFL, flags_stdin);
812     fcntl(STDOUT_FILENO, F_SETFL, flags_stdout);
813    
814     // Restore socket flags
815     fcntl(sock, F_SETFL, flags_sock);
816    
817 sysadm 1.14 if (close(sock) == -1)
818     {
819     log_error("Close socket failed\n");
820     }
821 sysadm 1.1
822 sysadm 1.50 t_used = time(NULL) - t_used;
823 sysadm 1.14 tm_used = gmtime(&t_used);
824 sysadm 1.8
825 sysadm 1.46 log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n",
826 sysadm 1.47 tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min,
827     tm_used->tm_sec);
828 sysadm 1.8
829 sysadm 1.14 return 0;
830 sysadm 1.1 }
831    
832     static int
833 sysadm 1.14 bbsnet_refresh()
834 sysadm 1.1 {
835 sysadm 1.14 clearscr();
836     moveto(1, 0);
837 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
838 sysadm 1.20 for (int i = 2; i < 19; i++)
839 sysadm 1.14 {
840     moveto(i, 0);
841 sysadm 1.23 prints("|");
842 sysadm 1.14 moveto(i, 79);
843 sysadm 1.23 prints("|");
844 sysadm 1.14 }
845     moveto(19, 0);
846 sysadm 1.23 prints("|-----------------------------------------------------------------------------|");
847 sysadm 1.14 moveto(22, 0);
848 sysadm 1.23 prints(" ----------------------------------------------------------------------------- ");
849 sysadm 1.14 moveto(23, 0);
850 sysadm 1.57 prints(" [\x1b[1;32mCtrl+C\x1b[m]退出");
851 sysadm 1.13
852 sysadm 1.14 iflush();
853 sysadm 1.1
854 sysadm 1.14 return 0;
855 sysadm 1.1 }
856    
857 sysadm 1.43 int bbsnet_selchange()
858 sysadm 1.1 {
859 sysadm 1.43 int i = bbsnet_menu.menu_item_pos[0];
860    
861 sysadm 1.14 moveto(20, 0);
862     clrtoeol();
863 sysadm 1.57 prints("|\x1b[1m单位:\x1b[1;33m%-18s\x1b[m 站名:\x1b[1;33m%s\x1b[m",
864 sysadm 1.43 bbsnet_conf[i].host2, bbsnet_conf[i].host1);
865 sysadm 1.14 moveto(20, 79);
866 sysadm 1.23 prints("|");
867 sysadm 1.14 moveto(21, 0);
868     clrtoeol();
869 sysadm 1.57 prints("|\x1b[1m连往:\x1b[1;33m%-20s", bbsnet_conf[i].ip);
870 sysadm 1.43 if (bbsnet_conf[i].port != 23)
871 sysadm 1.20 {
872 sysadm 1.43 prints(" %d", bbsnet_conf[i].port);
873 sysadm 1.20 }
874 sysadm 1.14 prints("\x1b[m");
875     moveto(21, 79);
876 sysadm 1.23 prints("|");
877 sysadm 1.14 iflush();
878 sysadm 1.1
879 sysadm 1.14 return 0;
880 sysadm 1.1 }
881    
882 sysadm 1.14 int bbs_net()
883 sysadm 1.1 {
884 sysadm 1.43 int ch, i;
885 sysadm 1.1
886 sysadm 1.17 load_bbsnet_conf(CONF_BBSNET);
887 sysadm 1.1
888 sysadm 1.50 BBS_last_access_tm = time(NULL);
889 sysadm 1.14
890     clearscr();
891     bbsnet_refresh();
892 sysadm 1.41 display_menu(&bbsnet_menu);
893 sysadm 1.43 bbsnet_selchange();
894 sysadm 1.14
895 sysadm 1.26 while (!SYS_server_exit)
896 sysadm 1.1 {
897 sysadm 1.39 ch = igetch(100);
898 sysadm 1.52
899 sysadm 1.14 switch (ch)
900     {
901 sysadm 1.47 case KEY_NULL: // broken pipe
902 sysadm 1.45 case KEY_ESC:
903 sysadm 1.35 case Ctrl('C'): // user cancel
904 sysadm 1.40 goto cleanup;
905 sysadm 1.14 case KEY_TIMEOUT:
906 sysadm 1.50 if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
907 sysadm 1.14 {
908 sysadm 1.40 goto cleanup;
909 sysadm 1.14 }
910 sysadm 1.29 continue;
911 sysadm 1.14 case CR:
912 sysadm 1.41 igetch_reset();
913 sysadm 1.43 bbsnet_connect(bbsnet_menu.menu_item_pos[0]);
914 sysadm 1.14 bbsnet_refresh();
915 sysadm 1.41 display_menu(&bbsnet_menu);
916 sysadm 1.43 bbsnet_selchange();
917 sysadm 1.14 break;
918     case KEY_UP:
919     for (i = 0; i < STATION_PER_LINE; i++)
920 sysadm 1.20 {
921 sysadm 1.14 menu_control(&bbsnet_menu, KEY_UP);
922 sysadm 1.20 }
923 sysadm 1.43 bbsnet_selchange();
924 sysadm 1.14 break;
925     case KEY_DOWN:
926     for (i = 0; i < STATION_PER_LINE; i++)
927 sysadm 1.20 {
928 sysadm 1.14 menu_control(&bbsnet_menu, KEY_DOWN);
929 sysadm 1.20 }
930 sysadm 1.43 bbsnet_selchange();
931 sysadm 1.14 break;
932     case KEY_LEFT:
933     menu_control(&bbsnet_menu, KEY_UP);
934 sysadm 1.43 bbsnet_selchange();
935 sysadm 1.14 break;
936     case KEY_RIGHT:
937     menu_control(&bbsnet_menu, KEY_DOWN);
938 sysadm 1.43 bbsnet_selchange();
939     break;
940 sysadm 1.44 case KEY_HOME:
941 sysadm 1.43 case KEY_PGUP:
942     menu_control(&bbsnet_menu, KEY_PGUP);
943     bbsnet_selchange();
944 sysadm 1.14 break;
945 sysadm 1.44 case KEY_END:
946     case KEY_PGDN:
947     menu_control(&bbsnet_menu, KEY_PGDN);
948     bbsnet_selchange();
949     break;
950 sysadm 1.14 default:
951     menu_control(&bbsnet_menu, ch);
952 sysadm 1.43 bbsnet_selchange();
953 sysadm 1.14 break;
954     }
955 sysadm 1.50 BBS_last_access_tm = time(NULL);
956 sysadm 1.1 }
957    
958 sysadm 1.40 cleanup:
959     unload_bbsnet_conf();
960    
961 sysadm 1.14 return 0;
962 sysadm 1.1 }
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