--- lbbs/src/bbs_net.c 2005/03/22 08:59:31 1.8 +++ lbbs/src/bbs_net.c 2025/11/30 11:59:18 1.86 @@ -1,428 +1,1277 @@ -/*************************************************************************** - bbs_net.c - description - ------------------- - begin : Mon Oct 18 2004 - copyright : (C) 2004 by Leaflet - email : leaflet@leafok.com - ***************************************************************************/ - -/*************************************************************************** - * * - * This program is free software; you can redistribute it and/or modify * - * it under the terms of the GNU General Public License as published by * - * the Free Software Foundation; either version 2 of the License, or * - * (at your option) any later version. * - * * - ***************************************************************************/ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * bbs_net + * - user interactive feature of site shuttle + * + * Copyright (C) 2004-2025 Leaflet + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif #include "bbs.h" +#include "bbs_net.h" #include "common.h" #include "io.h" +#include "log.h" +#include "login.h" #include "menu.h" -#include "tcplib.h" -#include +#include "screen.h" +#include "str_process.h" +#include +#include +#include #include -#include -#include -#include -#include +#include +#include +#include #include #include -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef HAVE_SYS_EPOLL_H +#include +#else +#include +#endif + +static const char MENU_CONF_DELIM[] = " \t\r\n"; -#define TIME_OUT 15 -#define MAX_PROCESS_BAR_LEN 30 -#define MAXSTATION 26*2 -#define STATION_PER_LINE 4 +enum _bbs_net_constant_t +{ + MAX_PROCESS_BAR_LEN = 30, + MAXSTATION = 26 * 2, + STATION_PER_LINE = 4, + USERNAME_MAX_LEN = 20, + PASSWORD_MAX_LEN = 20, +}; struct _bbsnet_conf { - char host1[20]; - char host2[40]; - char ip[40]; - int port; + char org_name[40]; + char site_name[40]; + char host_name[IP_ADDR_LEN]; + in_port_t port; + int8_t use_ssh; + char charset[CHARSET_MAX_LEN + 1]; } bbsnet_conf[MAXSTATION]; -MENU_SET bbsnet_menu; +static MENU_SET bbsnet_menu; -int -load_bbsnet_conf (const char *file_config) +static int load_bbsnet_conf(const char *file_config) { - FILE *fp; - MENU *p_menu; - MENU_ITEM *p_menuitem; - char t[256], *t1, *t2, *t3, *t4; - int item_count = 0; - - fp = fopen (file_config, "r"); - if (fp == NULL) - return -1; - - p_menu = bbsnet_menu.p_menu[0] = malloc (sizeof (MENU)); - strcpy (p_menu->name, "BBSNET"); - p_menu->title.show = 0; - p_menu->screen.show = 0; - - while (fgets (t, 255, fp) && item_count < MAXSTATION) - { - t1 = strtok (t, " \t"); - t2 = strtok (NULL, " \t\n"); - t3 = strtok (NULL, " \t\n"); - t4 = strtok (NULL, " \t\n"); - - if (t1[0] == '#' || t1[0] == '*' || t1 == NULL || t2 == NULL - || t3 == NULL) - continue; - strncpy (bbsnet_conf[item_count].host1, t2, 18); - bbsnet_conf[item_count].host1[18] = 0; - strncpy (bbsnet_conf[item_count].host2, t1, 36); - bbsnet_conf[item_count].host2[36] = 0; - strncpy (bbsnet_conf[item_count].ip, t3, 36); - bbsnet_conf[item_count].ip[36] = 0; - bbsnet_conf[item_count].port = t4 ? atoi (t4) : 23; - - p_menuitem = p_menu->items[item_count] = malloc (sizeof (MENU_ITEM)); - p_menuitem->row = 2 + item_count / STATION_PER_LINE; - p_menuitem->col = 5 + item_count % STATION_PER_LINE * 20; - sprintf (p_menuitem->action, "%d", item_count); - p_menuitem->submenu = 0; - p_menuitem->priv = 0; - p_menuitem->level = 0; - p_menuitem->display = 0; - p_menuitem->name[0] = - (item_count < MAXSTATION / 2 ? 'A' + item_count : 'a' + item_count); - p_menuitem->name[1] = '\0'; - sprintf (p_menuitem->text, "%c. %s", - p_menuitem->name[0], bbsnet_conf[item_count].host1); - - item_count++; - } - fclose (fp); - - p_menu->item_count = item_count; - p_menu->item_cur_pos = 0; - - bbsnet_menu.menu_count = 1; - bbsnet_menu.menu_select_depth = 0; - bbsnet_menu.p_menu_select[0] = bbsnet_menu.p_menu[0]; + FILE *fp; + MENU *p_menu; + MENU_ITEM *p_menu_item; + MENU_ITEM_ID menu_item_id; + char line[LINE_BUFFER_LEN], *t1, *t2, *t3, *t4, *t5, *t6, *saveptr; + + fp = fopen(file_config, "r"); + if (fp == NULL) + { + return -1; + } + + bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU)); + if (bbsnet_menu.p_menu_pool == NULL) + { + log_error("calloc(p_menu_pool) error\n"); + return -3; + } + bbsnet_menu.menu_count = 1; + + bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM)); + if (bbsnet_menu.p_menu_item_pool == NULL) + { + log_error("calloc(p_menu_item_pool) error\n"); + return -3; + } + bbsnet_menu.menu_item_count = MAXSTATION; + + p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0); + + strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1); + p_menu->name[sizeof(p_menu->name) - 1] = '\0'; + p_menu->title.show = 0; + p_menu->screen_show = 0; + + menu_item_id = 0; + while (fgets(line, sizeof(line), fp) && menu_item_id < MAXSTATION) + { + t1 = strtok_r(line, MENU_CONF_DELIM, &saveptr); + t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr); + t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr); + t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr); + t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr); + t6 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr); - return 0; + if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL || + t5 == NULL || t6 == NULL || line[0] == '#' || line[0] == '*') + { + continue; + } + + strncpy(bbsnet_conf[menu_item_id].site_name, t2, sizeof(bbsnet_conf[menu_item_id].site_name) - 1); + bbsnet_conf[menu_item_id].site_name[sizeof(bbsnet_conf[menu_item_id].site_name) - 1] = '\0'; + strncpy(bbsnet_conf[menu_item_id].org_name, t1, sizeof(bbsnet_conf[menu_item_id].org_name) - 1); + bbsnet_conf[menu_item_id].org_name[sizeof(bbsnet_conf[menu_item_id].org_name) - 1] = '\0'; + strncpy(bbsnet_conf[menu_item_id].host_name, t3, sizeof(bbsnet_conf[menu_item_id].host_name) - 1); + bbsnet_conf[menu_item_id].host_name[sizeof(bbsnet_conf[menu_item_id].host_name) - 1] = '\0'; + bbsnet_conf[menu_item_id].port = (in_port_t)(t4 ? atoi(t4) : 23); + bbsnet_conf[menu_item_id].use_ssh = (toupper(t5[0]) == 'Y'); + strncpy(bbsnet_conf[menu_item_id].charset, t6, sizeof(bbsnet_conf[menu_item_id].charset) - 1); + bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0'; + + p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id); + if (p_menu_item == NULL) + { + log_error("get_menu_item_by_id(%d) return NULL pointer\n", menu_item_id); + return -1; + } + + p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE); + p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20); + snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id); + p_menu_item->submenu = 0; + p_menu_item->priv = 0; + p_menu_item->level = 0; + p_menu_item->name[0] = + (char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id); + p_menu_item->name[1] = '\0'; + snprintf(p_menu_item->text, sizeof(p_menu_item->text), "%c. %s", + p_menu_item->name[0], bbsnet_conf[menu_item_id].site_name); + + p_menu->items[p_menu->item_count] = menu_item_id; + p_menu->item_count++; + menu_item_id++; + } + + bbsnet_menu.menu_item_count = (int16_t)menu_item_id; + bbsnet_menu.menu_id_path[0] = 0; + bbsnet_menu.menu_item_pos[0] = 0; + bbsnet_menu.choose_step = 0; + + fclose(fp); + + return 0; } -static void -process_bar (int n, int len) +static void unload_bbsnet_conf(void) { - char buf[256]; - char buf2[256]; - char *ptr; - char *ptr2; - char *ptr3; - - moveto (4, 0); - prints ("┌───────────────┐\n"); - sprintf (buf2, " %3d%% ", n * 100 / len); - ptr = buf; - ptr2 = buf2; - ptr3 = buf + n; - while (ptr != ptr3) - *ptr++ = *ptr2++; - *ptr++ = '\x1b'; - *ptr++ = '['; - *ptr++ = '4'; - *ptr++ = '4'; - *ptr++ = 'm'; - while (*ptr2 != '\0') - *ptr++ = *ptr2++; - *ptr++ = '\0'; - prints ("│\033[46m%s\033[m│\n", buf); - prints ("└───────────────┘\n"); + bbsnet_menu.menu_count = 0; + bbsnet_menu.menu_item_count = 0; + + free(bbsnet_menu.p_menu_pool); + bbsnet_menu.p_menu_pool = NULL; + free(bbsnet_menu.p_menu_item_pool); + bbsnet_menu.p_menu_item_pool = NULL; } -int -bbsnet_connect (int n) +static void process_bar(int n, int len) { - int sock, ch, result, len, loop; - struct sockaddr_in sin; - char buf[256]; - fd_set inputs, testfds; - struct timeval timeout; - struct hostent *pHost = NULL; - int rc, rv, tos = 020, i; - char remote_addr[256]; - int remote_port; - time_t t_used; - struct tm * tm_used; - - prints ("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\n", - bbsnet_conf[n].host1, bbsnet_conf[n].ip); - prints ("\033[1;32m如果在 %d 秒内无法连上，穿梭程序将放弃连接。\033[m\n", - TIME_OUT); - - pHost = gethostbyname (bbsnet_conf[n].ip); - - if (pHost == NULL) - { - prints ("\033[1;31m查找主机名失败！\033[m\n"); - press_any_key (); - return -1; - } - - sock = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP); - - if (sock < 0) - { - prints ("\033[1;31m无法创建socket！\033[m\n"); - press_any_key (); - return -1; - } - - sin.sin_family = AF_INET; - sin.sin_addr.s_addr = - (strlen (hostaddr_server) > 0 ? inet_addr (hostaddr_server) : INADDR_ANY); - sin.sin_port = 0; - - if (bind (sock, (struct sockaddr *) &sin, sizeof (sin)) < 0) - { - log_error ("Bind address %s:%u failed\n", - inet_ntoa (sin.sin_addr), ntohs (sin.sin_port)); - return -2; - } - - bzero (&sin, sizeof (sin)); - sin.sin_family = AF_INET; - sin.sin_addr = *(struct in_addr *) pHost->h_addr_list[0]; - sin.sin_port = htons (bbsnet_conf[n].port); - - strcpy (remote_addr, inet_ntoa (sin.sin_addr)); - remote_port = ntohs (sin.sin_port); - - prints ("\033[1;32m穿梭进度条提示您当前已使用的时间。\033[m\n"); - process_bar (0, MAX_PROCESS_BAR_LEN); - for (i = 0; i < MAX_PROCESS_BAR_LEN; i++) - { - if (i == 0) - rv = - NonBlockConnectEx (sock, (struct sockaddr *) &sin, sizeof (sin), - 500, 1); - else - rv = - NonBlockConnectEx (sock, (struct sockaddr *) &sin, sizeof (sin), - 500, 0); - if (rv == ERR_TCPLIB_TIMEOUT) - { - process_bar (i + 1, MAX_PROCESS_BAR_LEN); - continue; - } - else if (rv == 0) - break; - else - { - prints ("\033[1;31m连接失败！\033[m\n"); - press_any_key (); - return -1; - } - } - if (i == MAX_PROCESS_BAR_LEN) - { - prints ("\033[1;31m连接超时！\033[m\n"); - press_any_key (); - return -1; - } - setsockopt (sock, IPPROTO_IP, IP_TOS, &tos, sizeof (int)); - - prints ("\033[1;31m连接成功！\033[m\n"); - log_std ("BBSNET connect to %s:%d\n", - remote_addr, remote_port); - - FD_ZERO (&inputs); - FD_SET (0, &inputs); - FD_SET (sock, &inputs); - - BBS_last_access_tm = t_used = time (0); - - loop = 1; - - while (loop) - { - testfds = inputs; - timeout.tv_sec = TIME_OUT; - timeout.tv_usec = 0; - - result = select (FD_SETSIZE, &testfds, (fd_set *) NULL, - (fd_set *) NULL, &timeout); - - switch (result) - { - case 0: - if (time (0) - BBS_last_access_tm >= MAX_DELAY_TIME) - { - loop = 0; - } - break; - case -1: - log_error ("select() error!\n"); - break; - default: - if (FD_ISSET (0, &testfds)) - { - len = read (0, buf, 255); - if (len == 0) - { - loop = 0; - break; - } - write (sock, buf, len); - } - if (FD_ISSET (sock, &testfds)) - { - len = read (sock, buf, 255); - if (len == 0) - { - loop = 0; - break; - } - write (1, buf, len); - } - break; - BBS_last_access_tm = time (0); - } - } - - if (close (sock) == -1) - { - log_error ("Close socket failed\n"); - } + char buf[LINE_BUFFER_LEN]; + char buf2[LINE_BUFFER_LEN]; + + if (len > LINE_BUFFER_LEN) + { + len = LINE_BUFFER_LEN - 1; + } + if (n < 0) + { + n = 0; + } + else if (n > len) + { + n = len; + } + + moveto(4, 1); + prints(" ------------------------------ \r\n"); + snprintf(buf, sizeof(buf), " %3d%% ", n * 100 / len); + memcpy(buf2, buf, (size_t)n); + buf2[n] = '\0'; + prints("|\033[46m%s\033[44m%s\033[m|\r\n", buf2, buf + n); + prints(" ------------------------------ \r\n"); + iflush(); +} + +static int bbsnet_connect(int n) +{ + int sock, ret, loop, error; + int sock_connected = 0; + int flags_sock; + int flags_stdin; + int flags_stdout; + int len; + struct sockaddr_in sin; + char input_buf[LINE_BUFFER_LEN]; + char output_buf[LINE_BUFFER_LEN]; + int input_buf_len = 0; + int output_buf_len = 0; + int input_buf_offset = 0; + int output_buf_offset = 0; + char input_conv[LINE_BUFFER_LEN * 2]; + char output_conv[LINE_BUFFER_LEN * 2]; + int input_conv_len = 0; + int output_conv_len = 0; + int input_conv_offset = 0; + int output_conv_offset = 0; + iconv_t input_cd = NULL; + iconv_t output_cd = NULL; + char tocode[32]; + +#ifdef HAVE_SYS_EPOLL_H + struct epoll_event ev, events[MAX_EVENTS]; + int epollfd; +#else + struct pollfd pfds[3]; +#endif + + int nfds; + int stdin_read_wait = 0; + int stdout_write_wait = 0; + int sock_read_wait = 0; + int sock_write_wait = 0; + struct hostent *p_host = NULL; + int tos; + char remote_addr[IP_ADDR_LEN]; + int remote_port; + char local_addr[IP_ADDR_LEN]; + int local_port; + socklen_t sock_len; + time_t t_used = time(NULL); + struct tm *tm_used; + int ch; + char remote_user[USERNAME_MAX_LEN + 1]; + char remote_pass[PASSWORD_MAX_LEN + 1]; + ssh_session session = NULL; + ssh_channel channel = NULL; + int ssh_process_config = 0; + int ssh_log_level = SSH_LOG_PROTOCOL; + + if (user_online_update("BBS_NET") < 0) + { + log_error("user_online_update(BBS_NET) error\n"); + } + + if (bbsnet_conf[n].use_ssh) + { + clearscr(); + + if (!SSH_v2) + { + moveto(1, 1); + prints("鍙湁鍦ㄤ互SSH鏂瑰紡鐧婚檰鏈珯鏃讹紝鎵嶈兘浣跨敤SSH绔欑偣绌挎銆"); + press_any_key(); + return 0; + } + + moveto(1, 1); + prints("閫氳繃SSH鏂瑰紡杩炴帴[%s]...", bbsnet_conf[n].site_name); + moveto(2, 1); + prints("璇疯緭鍏ョ敤鎴峰悕: "); + iflush(); + if (str_input(remote_user, sizeof(remote_user), DOECHO) < 0) + { + return -1; + } + if (remote_user[0] == '\0') + { + return 0; + } + + moveto(3, 1); + prints("璇疯緭鍏ュ瘑鐮: "); + iflush(); + if (str_input(remote_pass, sizeof(remote_pass), NOECHO) < 0) + { + return -1; + } + if (remote_pass[0] == '\0') + { + return 0; + } + } + + clearscr(); + + moveto(1, 1); + prints("\033[1;32m姝ｅ湪娴嬭瘯寰 %s (%s) 鐨勮繛鎺ワ紝璇风◢鍊... \033[m\r\n", + bbsnet_conf[n].site_name, bbsnet_conf[n].host_name); + iflush(); + + p_host = gethostbyname(bbsnet_conf[n].host_name); + + if (p_host == NULL) + { + prints("\033[1;31m鏌ユ壘涓绘満鍚嶅け璐ワ紒\033[m\r\n"); + press_any_key(); + return -1; + } + + sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); + + if (sock < 0) + { + prints("\033[1;31m鏃犳硶鍒涘缓socket锛乗033[m\r\n"); + press_any_key(); + return -1; + } + + sin.sin_family = AF_INET; + sin.sin_addr.s_addr = (BBS_address[0] != '\0' ? inet_addr(BBS_address) : INADDR_ANY); + sin.sin_port = 0; + + if (bind(sock, (struct sockaddr *)&sin, sizeof(sin)) < 0) + { + log_error("Bind address %s:%u failed (%d)\n", + inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), errno); + return -2; + } + + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + sin.sin_addr = *(struct in_addr *)p_host->h_addr_list[0]; + sin.sin_port = htons(bbsnet_conf[n].port); + + strncpy(remote_addr, inet_ntoa(sin.sin_addr), sizeof(remote_addr) - 1); + remote_addr[sizeof(remote_addr) - 1] = '\0'; + remote_port = ntohs(sin.sin_port); + + prints("\033[1;32m绌挎杩涘害鏉℃彁绀烘偍褰撳墠宸蹭娇鐢ㄧ殑鏃堕棿锛屾寜\033[1;33mCtrl+C\033[1;32m涓柇銆俓033[m\r\n"); + process_bar(0, MAX_PROCESS_BAR_LEN); + + // Set socket as non-blocking + flags_sock = fcntl(sock, F_GETFL, 0); + fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK); + + // Set STDIN/STDOUT as non-blocking + flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0); + flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0); + fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK); + fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK); + +#ifdef HAVE_SYS_EPOLL_H + epollfd = epoll_create1(0); + if (epollfd < 0) + { + log_error("epoll_create1() error (%d)\n", errno); + return -1; + } + + ev.events = EPOLLOUT | EPOLLET; + ev.data.fd = sock; + if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1) + { + log_error("epoll_ctl(socket) error (%d)\n", errno); + goto cleanup; + } + + ev.events = EPOLLIN | EPOLLET; + ev.data.fd = STDIN_FILENO; + if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1) + { + log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno); + goto cleanup; + } +#endif + + while (!SYS_server_exit) + { + if ((ret = connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0) + { + if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS) + { + // Use select / epoll to check writability of the socket, + // then use getsockopt to check the status of the socket. + // See man connect(2) + break; + } + else if (errno == EINTR) + { + continue; + } + else + { + log_error("connect(socket) error (%d)\n", errno); + + prints("\033[1;31m杩炴帴澶辫触锛乗033[m\r\n"); + press_any_key(); + + goto cleanup; + } + } + } + + for (int j = 0; j < MAX_PROCESS_BAR_LEN && !sock_connected && !SYS_server_exit; j++) + { +#ifdef HAVE_SYS_EPOLL_H + nfds = epoll_wait(epollfd, events, MAX_EVENTS, 500); // 0.5 second + ret = nfds; +#else + pfds[0].fd = sock; + pfds[0].events = POLLOUT; + pfds[1].fd = STDIN_FILENO; + pfds[1].events = POLLIN; + nfds = 2; + ret = poll(pfds, (nfds_t)nfds, 500); // 0.5 second +#endif + + if (ret < 0) + { + if (errno != EINTR) + { +#ifdef HAVE_SYS_EPOLL_H + log_error("epoll_wait() error (%d)\n", errno); +#else + log_error("poll() error (%d)\n", errno); +#endif + break; + } + } + else if (ret == 0) // timeout + { + process_bar(j + 1, MAX_PROCESS_BAR_LEN); + } + else // ret > 0 + { + for (int i = 0; i < nfds; i++) + { +#ifdef HAVE_SYS_EPOLL_H + if (events[i].data.fd == sock) +#else + if (pfds[i].fd == sock && (pfds[i].revents & POLLOUT)) +#endif + { + len = sizeof(error); + if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, (socklen_t *)&len) < 0) + { + log_error("getsockopt() error (%d) !\n", error); + goto cleanup; + } + if (error == 0) + { + sock_connected = 1; + } + } +#ifdef HAVE_SYS_EPOLL_H + else if (events[i].data.fd == STDIN_FILENO) +#else + else if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN)) +#endif + { + do + { + ch = igetch(0); + } while (ch == 0); + if (ch == Ctrl('C') || ch == KEY_ESC) + { + goto cleanup; + } + } + } + } + } + if (SYS_server_exit) + { + goto cleanup; + } + if (!sock_connected) + { + prints("\033[1;31m杩炴帴澶辫触锛乗033[m\r\n"); + press_any_key(); + + goto cleanup; + } + + tos = IPTOS_LOWDELAY; + if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0) + { + log_error("setsockopt IP_TOS=%d error (%d)\n", tos, errno); + } + + sock_len = sizeof(sin); + if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0) + { + log_error("getsockname() error: %d", errno); + goto cleanup; + } + + strncpy(local_addr, inet_ntoa(sin.sin_addr), sizeof(local_addr) - 1); + local_addr[sizeof(local_addr) - 1] = '\0'; + local_port = ntohs(sin.sin_port); + + if (bbsnet_conf[n].use_ssh) + { + session = ssh_new(); + if (session == NULL) + { + log_error("ssh_new() error\n"); + goto cleanup; + } + + if (ssh_options_set(session, SSH_OPTIONS_FD, &sock) < 0 || + ssh_options_set(session, SSH_OPTIONS_PROCESS_CONFIG, &ssh_process_config) < 0 || + ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, SSH_KNOWN_HOSTS_FILE) < 0 || + ssh_options_set(session, SSH_OPTIONS_HOST, bbsnet_conf[n].host_name) < 0 || + ssh_options_set(session, SSH_OPTIONS_USER, remote_user) < 0 || + ssh_options_set(session, SSH_OPTIONS_HOSTKEYS, "+ssh-rsa") < 0 || + ssh_options_set(session, SSH_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0) + { + log_error("Error setting SSH options: %s\n", ssh_get_error(session)); + goto cleanup; + } + + ssh_set_blocking(session, 0); - t_used = time (0) - t_used; - tm_used = gmtime (&t_used); + while (!SYS_server_exit) + { + ret = ssh_connect(session); + if (ret == SSH_OK) + { + break; + } + else if (ret == SSH_ERROR) + { + log_error("ssh_connect() error\n"); + goto cleanup; + } + } - log_std ("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n", - tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min, tm_used->tm_sec); + ret = ssh_session_is_known_server(session); + switch (ret) + { + case SSH_KNOWN_HOSTS_NOT_FOUND: + case SSH_KNOWN_HOSTS_UNKNOWN: + if (ssh_session_update_known_hosts(session) != SSH_OK) + { + log_error("ssh_session_update_known_hosts(%s) error\n", bbsnet_conf[n].host_name); + prints("\033[1;31m鏃犳硶娣诲姞鏈嶅姟鍣ㄨ瘉涔033[m"); + press_any_key(); + goto cleanup; + } + log_common("SSH key of (%s) is added into %s\n", bbsnet_conf[n].host_name, SSH_KNOWN_HOSTS_FILE); + case SSH_KNOWN_HOSTS_OK: + break; + case SSH_KNOWN_HOSTS_CHANGED: + case SSH_KNOWN_HOSTS_OTHER: + log_error("ssh_session_is_known_server(%s) error: %d\n", bbsnet_conf[n].host_name, ret); + prints("\033[1;31m鏈嶅姟鍣ㄨ瘉涔﹀凡鍙樻洿\033[m"); + press_any_key(); + goto cleanup; + } + + for (int i = 0; !SYS_server_exit;) + { + ret = ssh_userauth_password(session, NULL, remote_pass); + if (ret == SSH_AUTH_SUCCESS) + { + break; + } + else if (ret == SSH_AUTH_AGAIN) + { +#ifdef _DEBUG + log_error("ssh_userauth_password() error: SSH_AUTH_AGAIN\n"); +#endif + } + else if (ret == SSH_AUTH_ERROR) + { + log_error("ssh_userauth_password() error: %d\n", ret); + goto cleanup; + } + else // if (ret == SSH_AUTH_DENIED) + { + prints("\033[1;31m韬唤楠岃瘉澶辫触锛乗033[m\r\n"); + i++; + if (i < BBS_login_retry_times) + { + prints("璇疯緭鍏ュ瘑鐮: "); + iflush(); + if (str_input(remote_pass, sizeof(remote_pass), NOECHO) < 0) + { + goto cleanup; + } + if (remote_pass[0] == '\0') + { + goto cleanup; + } + } + else + { + goto cleanup; + } + } + } - return 0; + channel = ssh_channel_new(session); + if (channel == NULL) + { + log_error("ssh_channel_new() error\n"); + goto cleanup; + } + + while (!SYS_server_exit) + { + ret = ssh_channel_open_session(channel); + if (ret == SSH_OK) + { + break; + } + else if (ret == SSH_ERROR) + { + log_error("ssh_channel_open_session() error\n"); + goto cleanup; + } + } + + while (!SYS_server_exit) + { + ret = ssh_channel_request_pty(channel); + if (ret == SSH_OK) + { + break; + } + else if (ret == SSH_ERROR) + { + log_error("ssh_channel_request_pty() error\n"); + goto cleanup; + } + } + + while (!SYS_server_exit) + { + ret = ssh_channel_request_shell(channel); + if (ret == SSH_OK) + { + break; + } + else if (ret == SSH_ERROR) + { + log_error("ssh_channel_request_shell() error\n"); + goto cleanup; + } + } + } + + prints("\033[1;31m杩炴帴鎴愬姛锛乗033[m\r\n"); + iflush(); + log_common("BBSNET connect to %s:%d from %s:%d by [%s]\n", + remote_addr, remote_port, local_addr, local_port, BBS_username); + + snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset, + (strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE")); + input_cd = iconv_open(tocode, stdio_charset); + if (input_cd == (iconv_t)(-1)) + { + log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno); + goto cleanup; + } + + snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset, + (strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT")); + output_cd = iconv_open(tocode, bbsnet_conf[n].charset); + if (output_cd == (iconv_t)(-1)) + { + log_error("iconv_open(%s->%s) error: %d\n", bbsnet_conf[n].charset, tocode, errno); + iconv_close(input_cd); + goto cleanup; + } + +#ifdef HAVE_SYS_EPOLL_H + ev.events = EPOLLIN | EPOLLOUT | EPOLLET; + ev.data.fd = sock; + if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1) + { + log_error("epoll_ctl(socket) error (%d)\n", errno); + goto cleanup; + } + + ev.events = EPOLLOUT | EPOLLET; + ev.data.fd = STDOUT_FILENO; + if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1) + { + log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno); + goto cleanup; + } +#endif + + BBS_last_access_tm = t_used = time(NULL); + loop = 1; + + while (loop && !SYS_server_exit) + { + if (SSH_v2 && ssh_channel_is_closed(SSH_channel)) + { + log_error("SSH channel is closed\n"); + loop = 0; + break; + } + + if (bbsnet_conf[n].use_ssh && ssh_channel_is_closed(channel)) + { + log_error("Remote SSH channel is closed\n"); + loop = 0; + break; + } + +#ifdef HAVE_SYS_EPOLL_H + nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second + ret = nfds; +#else + pfds[0].fd = STDIN_FILENO; + pfds[0].events = POLLIN; + pfds[1].fd = sock; + pfds[1].events = POLLIN | POLLOUT; + pfds[2].fd = STDOUT_FILENO; + pfds[2].events = POLLOUT; + nfds = 3; + ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second +#endif + + if (ret < 0) + { + if (errno != EINTR) + { +#ifdef HAVE_SYS_EPOLL_H + log_error("epoll_wait() error (%d)\n", errno); +#else + log_error("poll() error (%d)\n", errno); +#endif + break; + } + continue; + } + else if (ret == 0) // timeout + { + if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time) + { + break; + } + } + + for (int i = 0; i < nfds; i++) + { +#ifdef HAVE_SYS_EPOLL_H + if (events[i].data.fd == STDIN_FILENO) +#else + if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN)) +#endif + { + stdin_read_wait = 1; + } + +#ifdef HAVE_SYS_EPOLL_H + if (events[i].data.fd == sock) +#else + if (pfds[i].fd == sock) +#endif + { +#ifdef HAVE_SYS_EPOLL_H + if (events[i].events & EPOLLIN) +#else + if (pfds[i].revents & POLLIN) +#endif + { + sock_read_wait = 1; + } + +#ifdef HAVE_SYS_EPOLL_H + if (events[i].events & EPOLLOUT) +#else + if (pfds[i].revents & POLLOUT) +#endif + { + sock_write_wait = 1; + } + } + +#ifdef HAVE_SYS_EPOLL_H + if (events[i].data.fd == STDOUT_FILENO) +#else + if (pfds[i].fd == STDOUT_FILENO && (pfds[i].revents & POLLOUT)) +#endif + { + stdout_write_wait = 1; + } + } + + if (stdin_read_wait) + { + while (input_buf_len < sizeof(input_buf) && !SYS_server_exit) + { + if (SSH_v2) + { + ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0); + if (ret == SSH_ERROR) + { + log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session)); + loop = 0; + break; + } + else if (ret == SSH_EOF) + { + stdin_read_wait = 0; + loop = 0; + break; + } + else if (ret == 0) + { + // Send NO-OP to remote server + input_buf[input_buf_len] = '\0'; + input_buf_len++; + BBS_last_access_tm = time(NULL); + + stdin_read_wait = 0; + break; // Check whether channel is still open + } + } + else + { + ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len); + } + if (ret < 0) + { + if (errno == EAGAIN || errno == EWOULDBLOCK) + { + stdin_read_wait = 0; + break; + } + else if (errno == EINTR) + { + continue; + } + else + { + log_error("read(STDIN) error (%d)\n", errno); + loop = 0; + break; + } + } + else if (ret == 0) // broken pipe + { +#ifdef _DEBUG + log_error("read(STDIN) EOF\n"); +#endif + stdin_read_wait = 0; + loop = 0; + break; + } + else + { + input_buf_len += ret; + BBS_last_access_tm = time(NULL); + + // Refresh current action while user input + if (user_online_update("BBS_NET") < 0) + { + log_error("user_online_update(BBS_NET) error\n"); + } + + continue; + } + } + } + + if (sock_write_wait) + { + if (input_buf_offset < input_buf_len) + { + // For debug +#ifdef _DEBUG + for (int j = input_buf_offset; j < input_buf_len; j++) + { + log_error("Debug input: <--[%u]\n", (input_buf[j] + 256) % 256); + } +#endif + + ret = io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len); + if (ret < 0) + { + log_error("io_buf_conv(input, %d, %d, %d) error\n", input_buf_len, input_buf_offset, input_conv_len); + input_buf_len = input_buf_offset; // Discard invalid sequence + } + + // For debug +#ifdef _DEBUG + for (int j = input_conv_offset; j < input_conv_len; j++) + { + log_error("Debug input_conv: <--[%u]\n", (input_conv[j] + 256) % 256); + } +#endif + } + + while (input_conv_offset < input_conv_len && !SYS_server_exit) + { + if (bbsnet_conf[n].use_ssh) + { + ret = ssh_channel_write(channel, input_conv + input_conv_offset, (uint32_t)(input_conv_len - input_conv_offset)); + if (ret == SSH_ERROR) + { + log_error("ssh_channel_write() error: %s\n", ssh_get_error(session)); + loop = 0; + break; + } + } + else + { + ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset)); + } + if (ret < 0) + { + if (errno == EAGAIN || errno == EWOULDBLOCK) + { + sock_write_wait = 0; + break; + } + else if (errno == EINTR) + { + continue; + } + else + { + log_error("write(socket) error (%d)\n", errno); + loop = 0; + break; + } + } + else if (ret == 0) // broken pipe + { +#ifdef _DEBUG + log_error("write(socket) EOF\n"); +#endif + sock_write_wait = 0; + loop = 0; + break; + } + else + { + input_conv_offset += ret; + if (input_conv_offset >= input_conv_len) // Output buffer complete + { + input_conv_offset = 0; + input_conv_len = 0; + break; + } + continue; + } + } + } + + if (sock_read_wait) + { + while (output_buf_len < sizeof(output_buf) && !SYS_server_exit) + { + if (bbsnet_conf[n].use_ssh) + { + ret = ssh_channel_read_nonblocking(channel, output_buf + output_buf_len, + (uint32_t)(sizeof(output_buf) - (size_t)output_buf_len), 0); + if (ret == SSH_ERROR) + { + log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(session)); + loop = 0; + break; + } + else if (ret == SSH_EOF) + { + sock_read_wait = 0; + loop = 0; + break; + } + else if (ret == 0) + { + sock_read_wait = 0; + break; + } + } + else + { + ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len); + } + if (ret < 0) + { + if (errno == EAGAIN || errno == EWOULDBLOCK) + { + sock_read_wait = 0; + break; + } + else if (errno == EINTR) + { + continue; + } + else + { + log_error("read(socket) error (%d)\n", errno); + loop = 0; + break; + } + } + else if (ret == 0) // broken pipe + { +#ifdef _DEBUG + log_error("read(socket) EOF\n"); +#endif + sock_read_wait = 0; + loop = 0; + break; + } + else + { + output_buf_len += ret; + continue; + } + } + } + + if (stdout_write_wait) + { + if (output_buf_offset < output_buf_len) + { + ret = io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len); + if (ret < 0) + { + log_error("io_buf_conv(output, %d, %d, %d) error\n", output_buf_len, output_buf_offset, output_conv_len); + output_buf_len = output_buf_offset; // Discard invalid sequence + } + } + + while (output_conv_offset < output_conv_len && !SYS_server_exit) + { + if (SSH_v2) + { + ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset)); + if (ret == SSH_ERROR) + { + log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session)); + loop = 0; + break; + } + } + else + { + ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset)); + } + if (ret < 0) + { + if (errno == EAGAIN || errno == EWOULDBLOCK) + { + stdout_write_wait = 0; + break; + } + else if (errno == EINTR) + { + continue; + } + else + { + log_error("write(STDOUT) error (%d)\n", errno); + loop = 0; + break; + } + } + else if (ret == 0) // broken pipe + { +#ifdef _DEBUG + log_error("write(STDOUT) EOF\n"); +#endif + stdout_write_wait = 0; + loop = 0; + break; + } + else + { + output_conv_offset += ret; + if (output_conv_offset >= output_conv_len) // Output buffer complete + { + output_conv_offset = 0; + output_conv_len = 0; + break; + } + continue; + } + } + } + } + + iconv_close(input_cd); + iconv_close(output_cd); + +cleanup: +#ifdef HAVE_SYS_EPOLL_H + if (close(epollfd) < 0) + { + log_error("close(epoll) error (%d)\n"); + } +#endif + + if (bbsnet_conf[n].use_ssh) + { + ssh_channel_free(channel); + ssh_disconnect(session); + ssh_free(session); + } + + // Restore STDIN/STDOUT flags + fcntl(STDIN_FILENO, F_SETFL, flags_stdin); + fcntl(STDOUT_FILENO, F_SETFL, flags_stdout); + + if (close(sock) == -1) + { + log_error("Close socket failed\n"); + } + + t_used = time(NULL) - t_used; + tm_used = gmtime(&t_used); + + log_common("BBSNET disconnect, %d days %d hours %d minutes %d seconds used\n", + tm_used->tm_mday - 1, tm_used->tm_hour, tm_used->tm_min, + tm_used->tm_sec); + + BBS_last_access_tm = time(NULL); + + return 0; } -static int -bbsnet_refresh () +static int bbsnet_refresh() { - int i; + clearscr(); + + moveto(1, 1); + prints(" ------------------------------------------------------------------------------ "); + for (int i = 2; i < 19; i++) + { + moveto(i, 1); + prints("|"); + moveto(i, 80); + prints("|"); + } + moveto(19, 1); + prints("|------------------------------------------------------------------------------|"); + moveto(22, 1); + prints(" ------------------------------------------------------------------------------ "); + moveto(23, 1); + prints(" [\033[1;32mCtrl+C\033[m]閫鍑"); - clearscr (); - moveto (1, 0); - prints - ("╭══════════════════════════════════════╮"); - for (i = 2; i < 19; i++) - { - moveto (i, 0); - prints ("║"); - moveto (i, 79); - prints ("║"); - } - moveto (19, 0); - prints - ("║——————————————————————————————————————║"); - moveto (22, 0); - prints - ("╰══════════════════════════════════════╯"); - moveto (23, 0); - prints (" [\x1b[1;32mCtrl+C\x1b[m]退出"); - iflush (); + iflush(); - return 0; + return 0; } -int -bbsnet_selchange (int new_pos) +static int bbsnet_selchange() { - moveto (20, 0); - clrtoeol (); - prints ("║\x1b[1m单位:\x1b[1;33m%-18s\x1b[m 站名:\x1b[1;33m%s\x1b[m", - bbsnet_conf[new_pos].host2, bbsnet_conf[new_pos].host1); - moveto (20, 79); - prints ("║"); - moveto (21, 0); - clrtoeol (); - prints ("║\x1b[1m连往:\x1b[1;33m%-20s", bbsnet_conf[new_pos].ip); - if (bbsnet_conf[new_pos].port != 23) - prints (" %d", bbsnet_conf[new_pos].port); - prints ("\x1b[m"); - moveto (21, 79); - prints ("║"); - iflush (); + int i = bbsnet_menu.menu_item_pos[0]; - return 0; + moveto(20, 1); + clrtoeol(); + prints("|\033[1m鍗曚綅: \033[1;33m%s\033[m%*s 绔欏悕: \033[1;33m%s\033[m", + bbsnet_conf[i].org_name, 20 - str_length(bbsnet_conf[i].org_name, 1), "", bbsnet_conf[i].site_name); + moveto(20, 80); + prints("|"); + moveto(21, 1); + clrtoeol(); + prints("|\033[1m杩炲線: \033[1;33m%-20s\033[m 绔彛: \033[1;33m%-5d\033[m 绫诲瀷: \033[1;33m%s\033[m", + bbsnet_conf[i].host_name, bbsnet_conf[i].port, (bbsnet_conf[i].use_ssh ? "SSH" : "Telnet")); + moveto(21, 80); + prints("|"); + iflush(); + + return 0; } -int -bbs_net () +int bbs_net() { - int ch, pos, i; - char file_config[256]; + int ch, i; + + load_bbsnet_conf(CONF_BBSNET); - strcpy (file_config, app_home_dir); - strcat (file_config, "conf/bbsnet.conf"); + bbsnet_refresh(); + display_menu(&bbsnet_menu); + bbsnet_selchange(); - load_bbsnet_conf (file_config); + while (!SYS_server_exit) + { + ch = igetch(100); - BBS_last_access_tm = time (0); - - clearscr (); - bbsnet_refresh (); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - display_menu (get_menu (&bbsnet_menu, "BBSNET")); - bbsnet_selchange (pos); - - while (1) - { - ch = igetch (); - switch (ch) - { - case KEY_NULL: - case Ctrl ('C'): - return 0; - case KEY_TIMEOUT: - if (time (0) - BBS_last_access_tm >= MAX_DELAY_TIME) - { - return -1; - } - continue; - case CR: - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_connect (pos); - bbsnet_refresh (); - display_current_menu (&bbsnet_menu); - bbsnet_selchange (pos); - break; - case KEY_UP: - for (i = 0; i < STATION_PER_LINE; i++) - menu_control (&bbsnet_menu, KEY_UP); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_selchange (pos); - break; - case KEY_DOWN: - for (i = 0; i < STATION_PER_LINE; i++) - menu_control (&bbsnet_menu, KEY_DOWN); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_selchange (pos); - break; - case KEY_LEFT: - menu_control (&bbsnet_menu, KEY_UP); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_selchange (pos); - break; - case KEY_RIGHT: - menu_control (&bbsnet_menu, KEY_DOWN); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_selchange (pos); - break; - default: - menu_control (&bbsnet_menu, ch); - pos = bbsnet_menu.p_menu[0]->item_cur_pos; - bbsnet_selchange (pos); - break; + if (ch != KEY_NULL && ch != KEY_TIMEOUT) + { + BBS_last_access_tm = time(NULL); + } + + switch (ch) + { + case KEY_NULL: // broken pipe + log_error("KEY_NULL\n"); + goto cleanup; + case KEY_TIMEOUT: + if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time) + { + log_error("User input timeout\n"); + goto cleanup; + } + continue; + case KEY_ESC: + case Ctrl('C'): // user cancel + goto cleanup; + case CR: + bbsnet_connect(bbsnet_menu.menu_item_pos[0]); + // Force cleanup anything remaining in the output buffer + clearscr(); + iflush(); + // Clear screen and redraw menu + bbsnet_refresh(); + display_menu(&bbsnet_menu); + bbsnet_selchange(); + break; + case KEY_UP: + for (i = 0; i < STATION_PER_LINE; i++) + { + menu_control(&bbsnet_menu, KEY_UP); + } + bbsnet_selchange(); + break; + case KEY_DOWN: + for (i = 0; i < STATION_PER_LINE; i++) + { + menu_control(&bbsnet_menu, KEY_DOWN); + } + bbsnet_selchange(); + break; + case KEY_LEFT: + menu_control(&bbsnet_menu, KEY_UP); + bbsnet_selchange(); + break; + case KEY_RIGHT: + menu_control(&bbsnet_menu, KEY_DOWN); + bbsnet_selchange(); + break; + case KEY_HOME: + case KEY_PGUP: + menu_control(&bbsnet_menu, KEY_PGUP); + bbsnet_selchange(); + break; + case KEY_END: + case KEY_PGDN: + menu_control(&bbsnet_menu, KEY_PGDN); + bbsnet_selchange(); + break; + default: + menu_control(&bbsnet_menu, ch); + bbsnet_selchange(); + break; + } } - BBS_last_access_tm = time (0); - } - return 0; +cleanup: + unload_bbsnet_conf(); + + return 0; }