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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* bbs_net
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* - user interactive feature of site shuttle
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*
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* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "bbs.h"
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#include "bbs_net.h"
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#include "common.h"
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#include "io.h"
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#include "log.h"
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#include "login.h"
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#include "menu.h"
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#include "screen.h"
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#include "str_process.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <libssh/libssh.h>
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#include <libssh/server.h>
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#include <libssh/callbacks.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <sys/select.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#ifdef HAVE_SYS_EPOLL_H
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#include <sys/epoll.h>
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#else
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#include <poll.h>
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#endif
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static const char MENU_CONF_DELIM[] = " \t\r\n";
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enum _bbs_net_constant_t
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{
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MAXSTATION = 26 * 2,
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STATION_PER_LINE = 4,
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USERNAME_MAX_LEN = 20,
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PASSWORD_MAX_LEN = 20,
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REMOTE_CONNECT_TIMEOUT = 10, // seconds
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SSH_CONNECT_TIMEOUT = 5, // seconds
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PROGRESS_BAR_LEN = 30,
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};
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struct _bbsnet_conf
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{
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char org_name[40];
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char site_name[40];
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char host_name[IP_ADDR_LEN];
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char port[6];
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int8_t use_ssh;
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char charset[CHARSET_MAX_LEN + 1];
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} bbsnet_conf[MAXSTATION];
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static MENU_SET bbsnet_menu;
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static void unload_bbsnet_conf(void);
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static int load_bbsnet_conf(const char *file_config)
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{
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FILE *fp;
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MENU *p_menu;
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MENU_ITEM *p_menu_item;
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MENU_ITEM_ID menu_item_id;
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char line[LINE_BUFFER_LEN], *t1, *t2, *t3, *t4, *t5, *t6, *saveptr;
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long port;
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char *endptr;
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unload_bbsnet_conf();
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bbsnet_menu.p_menu_pool = calloc(1, sizeof(MENU));
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if (bbsnet_menu.p_menu_pool == NULL)
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{
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log_error("calloc(p_menu_pool) error");
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return -1;
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}
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bbsnet_menu.menu_count = 1;
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bbsnet_menu.p_menu_item_pool = calloc(MAXSTATION, sizeof(MENU_ITEM));
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if (bbsnet_menu.p_menu_item_pool == NULL)
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{
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log_error("calloc(p_menu_item_pool) error");
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unload_bbsnet_conf();
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return -1;
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}
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bbsnet_menu.menu_item_count = MAXSTATION;
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p_menu = (MENU *)get_menu_by_id(&bbsnet_menu, 0);
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strncpy(p_menu->name, "BBSNET", sizeof(p_menu->name) - 1);
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p_menu->name[sizeof(p_menu->name) - 1] = '\0';
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p_menu->title.show = 0;
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p_menu->screen_show = 0;
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fp = fopen(file_config, "r");
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if (fp == NULL)
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{
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unload_bbsnet_conf();
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return -2;
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}
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menu_item_id = 0;
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while (fgets(line, sizeof(line), fp) && menu_item_id < MAXSTATION)
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{
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t1 = strtok_r(line, MENU_CONF_DELIM, &saveptr);
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t2 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
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t3 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
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t4 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
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t5 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
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t6 = strtok_r(NULL, MENU_CONF_DELIM, &saveptr);
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if (t1 == NULL || t2 == NULL || t3 == NULL || t4 == NULL ||
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t5 == NULL || t6 == NULL || t1[0] == '#')
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{
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continue;
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}
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strncpy(bbsnet_conf[menu_item_id].site_name, t2, sizeof(bbsnet_conf[menu_item_id].site_name) - 1);
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bbsnet_conf[menu_item_id].site_name[sizeof(bbsnet_conf[menu_item_id].site_name) - 1] = '\0';
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strncpy(bbsnet_conf[menu_item_id].org_name, t1, sizeof(bbsnet_conf[menu_item_id].org_name) - 1);
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bbsnet_conf[menu_item_id].org_name[sizeof(bbsnet_conf[menu_item_id].org_name) - 1] = '\0';
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strncpy(bbsnet_conf[menu_item_id].host_name, t3, sizeof(bbsnet_conf[menu_item_id].host_name) - 1);
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bbsnet_conf[menu_item_id].host_name[sizeof(bbsnet_conf[menu_item_id].host_name) - 1] = '\0';
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port = strtol(t4, &endptr, 10);
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if (*endptr != '\0' || port <= 0 || port > 65535)
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{
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log_error("Invalid port value %ld of menu item %d", port, menu_item_id);
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fclose(fp);
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unload_bbsnet_conf();
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return -3;
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}
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strncpy(bbsnet_conf[menu_item_id].port, t4, sizeof(bbsnet_conf[menu_item_id].port) - 1);
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bbsnet_conf[menu_item_id].port[sizeof(bbsnet_conf[menu_item_id].port) - 1] = '\0';
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bbsnet_conf[menu_item_id].use_ssh = (toupper(t5[0]) == 'Y');
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strncpy(bbsnet_conf[menu_item_id].charset, t6, sizeof(bbsnet_conf[menu_item_id].charset) - 1);
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bbsnet_conf[menu_item_id].charset[sizeof(bbsnet_conf[menu_item_id].charset) - 1] = '\0';
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p_menu_item = get_menu_item_by_id(&bbsnet_menu, menu_item_id);
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if (p_menu_item == NULL)
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{
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log_error("get_menu_item_by_id(%d) return NULL pointer", menu_item_id);
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fclose(fp);
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unload_bbsnet_conf();
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return -3;
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}
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p_menu_item->row = (int16_t)(2 + menu_item_id / STATION_PER_LINE);
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p_menu_item->col = (int16_t)(5 + menu_item_id % STATION_PER_LINE * 20);
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snprintf(p_menu_item->action, sizeof(p_menu_item->action), "%d", (int16_t)menu_item_id);
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p_menu_item->submenu = 0;
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p_menu_item->priv = 0;
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p_menu_item->level = 0;
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p_menu_item->name[0] =
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(char)(menu_item_id < MAXSTATION / 2 ? 'A' + menu_item_id : 'a' + menu_item_id - MAXSTATION / 2);
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p_menu_item->name[1] = '\0';
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snprintf(p_menu_item->text, sizeof(p_menu_item->text), "\033[1;36m%c.\033[m %s",
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p_menu_item->name[0], bbsnet_conf[menu_item_id].site_name);
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p_menu->items[p_menu->item_count] = menu_item_id;
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p_menu->item_count++;
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menu_item_id++;
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}
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bbsnet_menu.menu_item_count = (int16_t)menu_item_id;
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bbsnet_menu.menu_id_path[0] = 0;
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bbsnet_menu.menu_item_pos[0] = 0;
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bbsnet_menu.choose_step = 0;
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fclose(fp);
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return 0;
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}
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static void unload_bbsnet_conf(void)
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{
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bbsnet_menu.menu_count = 0;
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bbsnet_menu.menu_item_count = 0;
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if (bbsnet_menu.p_menu_pool)
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{
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free(bbsnet_menu.p_menu_pool);
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bbsnet_menu.p_menu_pool = NULL;
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}
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if (bbsnet_menu.p_menu_item_pool)
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{
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free(bbsnet_menu.p_menu_item_pool);
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bbsnet_menu.p_menu_item_pool = NULL;
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}
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}
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static void progress_bar(int percent, int len)
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{
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char line[LINE_BUFFER_LEN];
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char buf[LINE_BUFFER_LEN];
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int pos;
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if (len < 4)
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{
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len = 4;
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}
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else if (len + 2 > LINE_BUFFER_LEN)
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{
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len = LINE_BUFFER_LEN - 3;
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}
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if (percent < 0)
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{
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percent = 0;
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}
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else if (percent > 100)
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{
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percent = 100;
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}
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pos = len * percent / 100;
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line[0] = ' ';
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for (int i = 1; i <= len; i++)
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{
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| 236 |
line[i] = '-';
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}
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line[len + 1] = ' ';
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line[len + 2] = '\0';
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| 240 |
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| 241 |
snprintf(buf, sizeof(buf), "%*s%3d%%%*s",
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| 242 |
(len - 4) / 2, "", percent, (len - 4 + 1) / 2, "");
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| 243 |
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| 244 |
moveto(4, 1);
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| 245 |
prints("%s\r\n", line);
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| 246 |
prints("|\033[46m%.*s\033[44m%s\033[m|\r\n", pos, buf, buf + pos);
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| 247 |
prints("%s\r\n", line);
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| 248 |
iflush();
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}
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| 250 |
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| 251 |
static int connect_timeout(struct timespec *p_ts_begin, struct timespec *p_ts_now,
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| 252 |
int total_time_ms, int *p_progress_last, int bar_len)
|
| 253 |
{
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| 254 |
long duration_ms;
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| 255 |
int progress;
|
| 256 |
|
| 257 |
if (clock_gettime(CLOCK_REALTIME, p_ts_now) == -1)
|
| 258 |
{
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| 259 |
log_error("clock_gettime() error (%d)", errno);
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| 260 |
return -1;
|
| 261 |
}
|
| 262 |
|
| 263 |
duration_ms = (p_ts_now->tv_sec - p_ts_begin->tv_sec) * 1000 +
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| 264 |
(p_ts_now->tv_nsec - p_ts_begin->tv_nsec) / 1000 / 1000;
|
| 265 |
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| 266 |
if (duration_ms >= total_time_ms)
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| 267 |
{
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| 268 |
progress_bar(100, bar_len);
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| 269 |
prints("\033[1;31m连接超时！\033[m\r\n");
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| 270 |
press_any_key();
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| 271 |
|
| 272 |
return 1;
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| 273 |
}
|
| 274 |
|
| 275 |
progress = (int)(duration_ms * 100 / total_time_ms) + 1;
|
| 276 |
|
| 277 |
if (progress != *p_progress_last)
|
| 278 |
{
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| 279 |
*p_progress_last = progress;
|
| 280 |
progress_bar(progress, bar_len);
|
| 281 |
}
|
| 282 |
|
| 283 |
return 0;
|
| 284 |
}
|
| 285 |
|
| 286 |
static int bbsnet_connect(int n)
|
| 287 |
{
|
| 288 |
int sock = -1;
|
| 289 |
int ret = 0;
|
| 290 |
int loop;
|
| 291 |
int error;
|
| 292 |
int sock_connected = 0;
|
| 293 |
int ssh_connected = 0;
|
| 294 |
int flags_sock = -1;
|
| 295 |
int flags_stdin = -1;
|
| 296 |
int flags_stdout = -1;
|
| 297 |
struct sockaddr_in sin;
|
| 298 |
char input_buf[LINE_BUFFER_LEN];
|
| 299 |
char output_buf[LINE_BUFFER_LEN];
|
| 300 |
int input_buf_len = 0;
|
| 301 |
int output_buf_len = 0;
|
| 302 |
int input_buf_offset = 0;
|
| 303 |
int output_buf_offset = 0;
|
| 304 |
char input_conv[LINE_BUFFER_LEN * 2];
|
| 305 |
char output_conv[LINE_BUFFER_LEN * 2];
|
| 306 |
int input_conv_len = 0;
|
| 307 |
int output_conv_len = 0;
|
| 308 |
int input_conv_offset = 0;
|
| 309 |
int output_conv_offset = 0;
|
| 310 |
iconv_t input_cd = (iconv_t)(-1);
|
| 311 |
iconv_t output_cd = (iconv_t)(-1);
|
| 312 |
char tocode[CHARSET_MAX_LEN + 20];
|
| 313 |
|
| 314 |
#ifdef HAVE_SYS_EPOLL_H
|
| 315 |
struct epoll_event ev, events[MAX_EVENTS];
|
| 316 |
int epollfd = -1;
|
| 317 |
#else
|
| 318 |
struct pollfd pfds[3];
|
| 319 |
#endif
|
| 320 |
|
| 321 |
int nfds;
|
| 322 |
int stdin_read_wait = 0;
|
| 323 |
int stdout_write_wait = 0;
|
| 324 |
int sock_read_wait = 0;
|
| 325 |
int sock_write_wait = 0;
|
| 326 |
struct addrinfo hints, *res = NULL;
|
| 327 |
int tos;
|
| 328 |
char remote_addr[INET_ADDRSTRLEN];
|
| 329 |
int remote_port;
|
| 330 |
char local_addr[INET_ADDRSTRLEN];
|
| 331 |
int local_port;
|
| 332 |
socklen_t sock_len;
|
| 333 |
time_t t_begin, t_used;
|
| 334 |
struct timespec ts_begin, ts_now;
|
| 335 |
int progress_last = 0;
|
| 336 |
int ch;
|
| 337 |
char remote_user[USERNAME_MAX_LEN + 1];
|
| 338 |
char remote_pass[PASSWORD_MAX_LEN + 1];
|
| 339 |
ssh_session outbound_session = NULL;
|
| 340 |
ssh_channel outbound_channel = NULL;
|
| 341 |
int ssh_process_config = 0;
|
| 342 |
int ssh_log_level = SSH_LOG_NOLOG;
|
| 343 |
|
| 344 |
if (user_online_update("BBS_NET") < 0)
|
| 345 |
{
|
| 346 |
log_error("user_online_update(BBS_NET) error");
|
| 347 |
}
|
| 348 |
|
| 349 |
if (bbsnet_conf[n].use_ssh)
|
| 350 |
{
|
| 351 |
clearscr();
|
| 352 |
|
| 353 |
if (!SSH_v2)
|
| 354 |
{
|
| 355 |
moveto(1, 1);
|
| 356 |
prints("只有在以SSH方式登陆本站时，才能使用SSH站点穿梭。");
|
| 357 |
press_any_key();
|
| 358 |
return 0;
|
| 359 |
}
|
| 360 |
|
| 361 |
moveto(1, 1);
|
| 362 |
prints("通过SSH方式连接[%s]...", bbsnet_conf[n].site_name);
|
| 363 |
moveto(2, 1);
|
| 364 |
prints("请输入用户名: ");
|
| 365 |
iflush();
|
| 366 |
if (str_input(remote_user, sizeof(remote_user), DOECHO) < 0)
|
| 367 |
{
|
| 368 |
return -1;
|
| 369 |
}
|
| 370 |
if (remote_user[0] == '\0')
|
| 371 |
{
|
| 372 |
return 0;
|
| 373 |
}
|
| 374 |
|
| 375 |
moveto(3, 1);
|
| 376 |
prints("请输入密码: ");
|
| 377 |
iflush();
|
| 378 |
if (str_input(remote_pass, sizeof(remote_pass), NOECHO) < 0)
|
| 379 |
{
|
| 380 |
return -1;
|
| 381 |
}
|
| 382 |
if (remote_pass[0] == '\0')
|
| 383 |
{
|
| 384 |
return 0;
|
| 385 |
}
|
| 386 |
}
|
| 387 |
|
| 388 |
clearscr();
|
| 389 |
|
| 390 |
moveto(1, 1);
|
| 391 |
prints("\033[1;32m正在测试往 %s (%s) 的连接，请稍候... \033[m\r\n",
|
| 392 |
bbsnet_conf[n].site_name, bbsnet_conf[n].host_name);
|
| 393 |
prints("\033[1;32m连接进行中，按\033[1;33mCtrl+C\033[1;32m中断。\033[m\r\n");
|
| 394 |
progress_bar(0, PROGRESS_BAR_LEN);
|
| 395 |
|
| 396 |
if (clock_gettime(CLOCK_REALTIME, &ts_begin) == -1)
|
| 397 |
{
|
| 398 |
log_error("clock_gettime() error (%d)", errno);
|
| 399 |
ret = -1;
|
| 400 |
goto cleanup;
|
| 401 |
}
|
| 402 |
ts_now = ts_begin;
|
| 403 |
|
| 404 |
memset(&hints, 0, sizeof(hints));
|
| 405 |
hints.ai_family = AF_INET;
|
| 406 |
hints.ai_socktype = SOCK_STREAM;
|
| 407 |
hints.ai_protocol = IPPROTO_TCP;
|
| 408 |
|
| 409 |
if ((ret = getaddrinfo(BBS_address, NULL, &hints, &res)) != 0)
|
| 410 |
{
|
| 411 |
log_error("getaddrinfo() error (%d): %s", ret, gai_strerror(ret));
|
| 412 |
ret = -1;
|
| 413 |
goto cleanup;
|
| 414 |
}
|
| 415 |
|
| 416 |
if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), local_addr, sizeof(local_addr)) == NULL)
|
| 417 |
{
|
| 418 |
log_error("inet_ntop() error (%d)", errno);
|
| 419 |
ret = -1;
|
| 420 |
goto cleanup;
|
| 421 |
}
|
| 422 |
local_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
|
| 423 |
|
| 424 |
sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
|
| 425 |
if (sock < 0)
|
| 426 |
{
|
| 427 |
log_error("socket() error (%d)", errno);
|
| 428 |
ret = -1;
|
| 429 |
goto cleanup;
|
| 430 |
}
|
| 431 |
|
| 432 |
if (bind(sock, res->ai_addr, res->ai_addrlen) < 0)
|
| 433 |
{
|
| 434 |
log_error("bind(%s:%u) error (%d)", local_addr, local_port, errno);
|
| 435 |
ret = -1;
|
| 436 |
goto cleanup;
|
| 437 |
}
|
| 438 |
|
| 439 |
freeaddrinfo(res);
|
| 440 |
res = NULL;
|
| 441 |
|
| 442 |
memset(&hints, 0, sizeof(hints));
|
| 443 |
hints.ai_family = AF_INET;
|
| 444 |
hints.ai_flags = AI_NUMERICSERV;
|
| 445 |
hints.ai_socktype = SOCK_STREAM;
|
| 446 |
hints.ai_protocol = IPPROTO_TCP;
|
| 447 |
|
| 448 |
if ((ret = getaddrinfo(bbsnet_conf[n].host_name, bbsnet_conf[n].port, &hints, &res)) != 0)
|
| 449 |
{
|
| 450 |
log_error("getaddrinfo() error (%d): %s", ret, gai_strerror(ret));
|
| 451 |
prints("\033[1;31m查找主机名失败！\033[m\r\n");
|
| 452 |
press_any_key();
|
| 453 |
ret = -1;
|
| 454 |
goto cleanup;
|
| 455 |
}
|
| 456 |
|
| 457 |
if (inet_ntop(AF_INET, &(((struct sockaddr_in *)res->ai_addr)->sin_addr), remote_addr, sizeof(remote_addr)) == NULL)
|
| 458 |
{
|
| 459 |
log_error("inet_ntop() error (%d)", errno);
|
| 460 |
ret = -1;
|
| 461 |
goto cleanup;
|
| 462 |
}
|
| 463 |
remote_port = ntohs(((struct sockaddr_in *)res->ai_addr)->sin_port);
|
| 464 |
|
| 465 |
// Set socket as non-blocking
|
| 466 |
if ((flags_sock = fcntl(sock, F_GETFL, 0)) == -1)
|
| 467 |
{
|
| 468 |
log_error("fcntl(F_GETFL) error (%d)", errno);
|
| 469 |
ret = -1;
|
| 470 |
goto cleanup;
|
| 471 |
}
|
| 472 |
if ((fcntl(sock, F_SETFL, flags_sock | O_NONBLOCK)) == -1)
|
| 473 |
{
|
| 474 |
log_error("fcntl(F_SETFL) error (%d)", errno);
|
| 475 |
ret = -1;
|
| 476 |
goto cleanup;
|
| 477 |
}
|
| 478 |
|
| 479 |
// Set STDIN/STDOUT as non-blocking
|
| 480 |
if ((flags_stdin = fcntl(STDIN_FILENO, F_GETFL, 0)) == -1)
|
| 481 |
{
|
| 482 |
log_error("fcntl(F_GETFL) error (%d)", errno);
|
| 483 |
ret = -1;
|
| 484 |
goto cleanup;
|
| 485 |
}
|
| 486 |
if ((flags_stdout = fcntl(STDOUT_FILENO, F_GETFL, 0)) == -1)
|
| 487 |
{
|
| 488 |
log_error("fcntl(F_GETFL) error (%d)", errno);
|
| 489 |
ret = -1;
|
| 490 |
goto cleanup;
|
| 491 |
}
|
| 492 |
if ((fcntl(STDIN_FILENO, F_SETFL, flags_stdin | O_NONBLOCK)) == -1)
|
| 493 |
{
|
| 494 |
log_error("fcntl(F_SETFL) error (%d)", errno);
|
| 495 |
ret = -1;
|
| 496 |
goto cleanup;
|
| 497 |
}
|
| 498 |
if ((fcntl(STDOUT_FILENO, F_SETFL, flags_stdout | O_NONBLOCK)) == -1)
|
| 499 |
{
|
| 500 |
log_error("fcntl(F_SETFL) error (%d)", errno);
|
| 501 |
ret = -1;
|
| 502 |
goto cleanup;
|
| 503 |
}
|
| 504 |
|
| 505 |
#ifdef HAVE_SYS_EPOLL_H
|
| 506 |
epollfd = epoll_create1(0);
|
| 507 |
if (epollfd < 0)
|
| 508 |
{
|
| 509 |
log_error("epoll_create1() error (%d)", errno);
|
| 510 |
ret = -1;
|
| 511 |
goto cleanup;
|
| 512 |
}
|
| 513 |
|
| 514 |
ev.events = EPOLLOUT | EPOLLET;
|
| 515 |
ev.data.fd = sock;
|
| 516 |
if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &ev) == -1)
|
| 517 |
{
|
| 518 |
log_error("epoll_ctl(socket) error (%d)", errno);
|
| 519 |
ret = -1;
|
| 520 |
goto cleanup;
|
| 521 |
}
|
| 522 |
|
| 523 |
ev.events = EPOLLIN | EPOLLET;
|
| 524 |
ev.data.fd = STDIN_FILENO;
|
| 525 |
if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
|
| 526 |
{
|
| 527 |
log_error("epoll_ctl(STDIN_FILENO) error (%d)", errno);
|
| 528 |
ret = -1;
|
| 529 |
goto cleanup;
|
| 530 |
}
|
| 531 |
#endif
|
| 532 |
|
| 533 |
while (!SYS_server_exit &&
|
| 534 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 535 |
{
|
| 536 |
if ((ret = connect(sock, res->ai_addr, res->ai_addrlen)) == 0)
|
| 537 |
{
|
| 538 |
sock_connected = 1;
|
| 539 |
break;
|
| 540 |
}
|
| 541 |
else if (ret < 0)
|
| 542 |
{
|
| 543 |
if (errno == EAGAIN || errno == EALREADY || errno == EINPROGRESS)
|
| 544 |
{
|
| 545 |
// Use select / epoll to check writability of the socket,
|
| 546 |
// then use getsockopt to check the status of the socket.
|
| 547 |
// See man connect(2)
|
| 548 |
break;
|
| 549 |
}
|
| 550 |
else if (errno == EINTR)
|
| 551 |
{
|
| 552 |
}
|
| 553 |
else
|
| 554 |
{
|
| 555 |
log_error("connect(socket) error (%d)", errno);
|
| 556 |
prints("\033[1;31m连接失败！\033[m\r\n");
|
| 557 |
press_any_key();
|
| 558 |
ret = -1;
|
| 559 |
goto cleanup;
|
| 560 |
}
|
| 561 |
}
|
| 562 |
}
|
| 563 |
|
| 564 |
while (!SYS_server_exit && !sock_connected &&
|
| 565 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 566 |
{
|
| 567 |
#ifdef HAVE_SYS_EPOLL_H
|
| 568 |
nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
|
| 569 |
ret = nfds;
|
| 570 |
#else
|
| 571 |
pfds[0].fd = sock;
|
| 572 |
pfds[0].events = POLLOUT;
|
| 573 |
pfds[1].fd = STDIN_FILENO;
|
| 574 |
pfds[1].events = POLLIN;
|
| 575 |
nfds = 2;
|
| 576 |
ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
|
| 577 |
#endif
|
| 578 |
|
| 579 |
if (ret < 0)
|
| 580 |
{
|
| 581 |
if (errno != EINTR)
|
| 582 |
{
|
| 583 |
#ifdef HAVE_SYS_EPOLL_H
|
| 584 |
log_error("epoll_wait() error (%d)", errno);
|
| 585 |
#else
|
| 586 |
log_error("poll() error (%d)", errno);
|
| 587 |
#endif
|
| 588 |
break;
|
| 589 |
}
|
| 590 |
}
|
| 591 |
else if (ret == 0) // timeout
|
| 592 |
{
|
| 593 |
}
|
| 594 |
else // ret > 0
|
| 595 |
{
|
| 596 |
for (int i = 0; i < nfds; i++)
|
| 597 |
{
|
| 598 |
#ifdef HAVE_SYS_EPOLL_H
|
| 599 |
if (events[i].data.fd == sock)
|
| 600 |
#else
|
| 601 |
if (pfds[i].fd == sock && (pfds[i].revents & POLLOUT))
|
| 602 |
#endif
|
| 603 |
{
|
| 604 |
socklen_t len = sizeof(error);
|
| 605 |
if (getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &len) < 0)
|
| 606 |
{
|
| 607 |
log_error("getsockopt() error (%d) !", errno);
|
| 608 |
ret = -1;
|
| 609 |
goto cleanup;
|
| 610 |
}
|
| 611 |
if (error == 0)
|
| 612 |
{
|
| 613 |
sock_connected = 1;
|
| 614 |
break;
|
| 615 |
}
|
| 616 |
}
|
| 617 |
#ifdef HAVE_SYS_EPOLL_H
|
| 618 |
else if (events[i].data.fd == STDIN_FILENO)
|
| 619 |
#else
|
| 620 |
else if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
|
| 621 |
#endif
|
| 622 |
{
|
| 623 |
do
|
| 624 |
{
|
| 625 |
ch = igetch(0);
|
| 626 |
} while (ch == 0);
|
| 627 |
if (ch == Ctrl('C') || ch == KEY_ESC)
|
| 628 |
{
|
| 629 |
ret = 0;
|
| 630 |
goto cleanup;
|
| 631 |
}
|
| 632 |
}
|
| 633 |
}
|
| 634 |
}
|
| 635 |
}
|
| 636 |
if (!sock_connected)
|
| 637 |
{
|
| 638 |
ret = -1;
|
| 639 |
goto cleanup;
|
| 640 |
}
|
| 641 |
|
| 642 |
tos = IPTOS_LOWDELAY;
|
| 643 |
if (setsockopt(sock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)) < 0)
|
| 644 |
{
|
| 645 |
log_error("setsockopt IP_TOS=%d error (%d)", tos, errno);
|
| 646 |
}
|
| 647 |
|
| 648 |
sock_len = sizeof(sin);
|
| 649 |
if (getsockname(sock, (struct sockaddr *)&sin, &sock_len) < 0)
|
| 650 |
{
|
| 651 |
log_error("getsockname() error: %d", errno);
|
| 652 |
ret = -1;
|
| 653 |
goto cleanup;
|
| 654 |
}
|
| 655 |
|
| 656 |
if (inet_ntop(AF_INET, &(sin.sin_addr), local_addr, sizeof(local_addr)) == NULL)
|
| 657 |
{
|
| 658 |
log_error("inet_ntop() error (%d)", errno);
|
| 659 |
ret = -1;
|
| 660 |
goto cleanup;
|
| 661 |
}
|
| 662 |
local_port = ntohs(sin.sin_port);
|
| 663 |
|
| 664 |
if (bbsnet_conf[n].use_ssh)
|
| 665 |
{
|
| 666 |
outbound_session = ssh_new();
|
| 667 |
if (outbound_session == NULL)
|
| 668 |
{
|
| 669 |
log_error("ssh_new() error");
|
| 670 |
ret = -1;
|
| 671 |
goto cleanup;
|
| 672 |
}
|
| 673 |
|
| 674 |
if (ssh_options_set(outbound_session, SSH_OPTIONS_FD, &sock) < 0 ||
|
| 675 |
ssh_options_set(outbound_session, SSH_OPTIONS_PROCESS_CONFIG, &ssh_process_config) < 0 ||
|
| 676 |
ssh_options_set(outbound_session, SSH_OPTIONS_KNOWNHOSTS, SSH_KNOWN_HOSTS_FILE) < 0 ||
|
| 677 |
ssh_options_set(outbound_session, SSH_OPTIONS_HOST, bbsnet_conf[n].host_name) < 0 ||
|
| 678 |
ssh_options_set(outbound_session, SSH_OPTIONS_USER, remote_user) < 0 ||
|
| 679 |
ssh_options_set(outbound_session, SSH_OPTIONS_HOSTKEYS, "+ssh-ed25519,ecdsa-sha2-nistp256,ssh-rsa") < 0 ||
|
| 680 |
ssh_options_set(outbound_session, SSH_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
|
| 681 |
{
|
| 682 |
log_error("Error setting SSH options: %s", ssh_get_error(outbound_session));
|
| 683 |
ret = -1;
|
| 684 |
goto cleanup;
|
| 685 |
}
|
| 686 |
|
| 687 |
ssh_set_blocking(outbound_session, 0);
|
| 688 |
|
| 689 |
ssh_connected = 0;
|
| 690 |
while (!SYS_server_exit &&
|
| 691 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 692 |
{
|
| 693 |
ret = ssh_connect(outbound_session);
|
| 694 |
if (ret == SSH_OK)
|
| 695 |
{
|
| 696 |
ssh_connected = 1;
|
| 697 |
break;
|
| 698 |
}
|
| 699 |
else if (ret == SSH_AGAIN)
|
| 700 |
{
|
| 701 |
// log_debug("ssh_connect() error: SSH_AGAIN");
|
| 702 |
}
|
| 703 |
else // if (ret == SSH_ERROR)
|
| 704 |
{
|
| 705 |
log_error("ssh_connect() error: SSH_ERROR");
|
| 706 |
ret = -1;
|
| 707 |
goto cleanup;
|
| 708 |
}
|
| 709 |
}
|
| 710 |
if (!ssh_connected)
|
| 711 |
{
|
| 712 |
ret = -1;
|
| 713 |
goto cleanup;
|
| 714 |
}
|
| 715 |
|
| 716 |
ret = ssh_session_is_known_server(outbound_session);
|
| 717 |
switch (ret)
|
| 718 |
{
|
| 719 |
case SSH_KNOWN_HOSTS_NOT_FOUND:
|
| 720 |
case SSH_KNOWN_HOSTS_UNKNOWN:
|
| 721 |
if (ssh_session_update_known_hosts(outbound_session) != SSH_OK)
|
| 722 |
{
|
| 723 |
log_error("ssh_session_update_known_hosts(%s) error", bbsnet_conf[n].host_name);
|
| 724 |
prints("\033[1;31m无法添加服务器证书\033[m\r\n");
|
| 725 |
press_any_key();
|
| 726 |
ret = -1;
|
| 727 |
goto cleanup;
|
| 728 |
}
|
| 729 |
log_common("SSH key of (%s) is added into %s", bbsnet_conf[n].host_name, SSH_KNOWN_HOSTS_FILE);
|
| 730 |
case SSH_KNOWN_HOSTS_OK:
|
| 731 |
break;
|
| 732 |
case SSH_KNOWN_HOSTS_CHANGED:
|
| 733 |
case SSH_KNOWN_HOSTS_OTHER:
|
| 734 |
log_error("ssh_session_is_known_server(%s) error: %d", bbsnet_conf[n].host_name, ret);
|
| 735 |
prints("\033[1;31m服务器证书已变更\033[m\r\n");
|
| 736 |
press_any_key();
|
| 737 |
ret = -1;
|
| 738 |
goto cleanup;
|
| 739 |
}
|
| 740 |
|
| 741 |
ssh_connected = 0;
|
| 742 |
while (!SYS_server_exit &&
|
| 743 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 744 |
{
|
| 745 |
ret = ssh_userauth_password(outbound_session, NULL, remote_pass);
|
| 746 |
if (ret == SSH_AUTH_SUCCESS)
|
| 747 |
{
|
| 748 |
ssh_connected = 1;
|
| 749 |
break;
|
| 750 |
}
|
| 751 |
else if (ret == SSH_AUTH_AGAIN)
|
| 752 |
{
|
| 753 |
// log_debug("ssh_userauth_password() error: SSH_AUTH_AGAIN");
|
| 754 |
}
|
| 755 |
else if (ret == SSH_AUTH_ERROR)
|
| 756 |
{
|
| 757 |
log_error("ssh_userauth_password() error: SSH_AUTH_ERROR");
|
| 758 |
ret = -1;
|
| 759 |
goto cleanup;
|
| 760 |
}
|
| 761 |
else // if (ret == SSH_AUTH_DENIED)
|
| 762 |
{
|
| 763 |
log_debug("ssh_userauth_password() error: SSH_AUTH_DENIED");
|
| 764 |
prints("\033[1;31m身份验证失败！\033[m\r\n");
|
| 765 |
press_any_key();
|
| 766 |
ret = 0;
|
| 767 |
goto cleanup;
|
| 768 |
}
|
| 769 |
}
|
| 770 |
if (!ssh_connected)
|
| 771 |
{
|
| 772 |
ret = -1;
|
| 773 |
goto cleanup;
|
| 774 |
}
|
| 775 |
|
| 776 |
outbound_channel = ssh_channel_new(outbound_session);
|
| 777 |
if (outbound_channel == NULL)
|
| 778 |
{
|
| 779 |
log_error("ssh_channel_new() error");
|
| 780 |
ret = -1;
|
| 781 |
goto cleanup;
|
| 782 |
}
|
| 783 |
|
| 784 |
ssh_connected = 0;
|
| 785 |
while (!SYS_server_exit &&
|
| 786 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 787 |
{
|
| 788 |
ret = ssh_channel_open_session(outbound_channel);
|
| 789 |
if (ret == SSH_OK)
|
| 790 |
{
|
| 791 |
ssh_connected = 1;
|
| 792 |
break;
|
| 793 |
}
|
| 794 |
else if (ret == SSH_AGAIN)
|
| 795 |
{
|
| 796 |
// log_debug("ssh_channel_open_session() error: SSH_AGAIN");
|
| 797 |
}
|
| 798 |
else // if (ret == SSH_ERROR)
|
| 799 |
{
|
| 800 |
log_error("ssh_channel_open_session() error: SSH_ERROR");
|
| 801 |
ret = -1;
|
| 802 |
goto cleanup;
|
| 803 |
}
|
| 804 |
}
|
| 805 |
if (!ssh_connected)
|
| 806 |
{
|
| 807 |
ret = -1;
|
| 808 |
goto cleanup;
|
| 809 |
}
|
| 810 |
|
| 811 |
ssh_connected = 0;
|
| 812 |
while (!SYS_server_exit &&
|
| 813 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 814 |
{
|
| 815 |
ret = ssh_channel_request_pty(outbound_channel);
|
| 816 |
if (ret == SSH_OK)
|
| 817 |
{
|
| 818 |
ssh_connected = 1;
|
| 819 |
break;
|
| 820 |
}
|
| 821 |
else if (ret == SSH_AGAIN)
|
| 822 |
{
|
| 823 |
// log_debug("ssh_channel_request_pty() error: SSH_AGAIN");
|
| 824 |
}
|
| 825 |
else // if (ret == SSH_ERROR)
|
| 826 |
{
|
| 827 |
log_error("ssh_channel_request_pty() error: SSH_ERROR");
|
| 828 |
ret = -1;
|
| 829 |
goto cleanup;
|
| 830 |
}
|
| 831 |
}
|
| 832 |
if (!ssh_connected)
|
| 833 |
{
|
| 834 |
ret = -1;
|
| 835 |
goto cleanup;
|
| 836 |
}
|
| 837 |
|
| 838 |
ssh_connected = 0;
|
| 839 |
while (!SYS_server_exit &&
|
| 840 |
!connect_timeout(&ts_begin, &ts_now, REMOTE_CONNECT_TIMEOUT * 1000, &progress_last, PROGRESS_BAR_LEN))
|
| 841 |
{
|
| 842 |
ret = ssh_channel_request_shell(outbound_channel);
|
| 843 |
if (ret == SSH_OK)
|
| 844 |
{
|
| 845 |
ssh_connected = 1;
|
| 846 |
break;
|
| 847 |
}
|
| 848 |
else if (ret == SSH_AGAIN)
|
| 849 |
{
|
| 850 |
// log_debug("ssh_channel_request_shell() error: SSH_AGAIN");
|
| 851 |
}
|
| 852 |
else // if (ret == SSH_ERROR)
|
| 853 |
{
|
| 854 |
log_error("ssh_channel_request_shell() error: SSH_ERROR");
|
| 855 |
ret = -1;
|
| 856 |
goto cleanup;
|
| 857 |
}
|
| 858 |
}
|
| 859 |
if (!ssh_connected)
|
| 860 |
{
|
| 861 |
ret = -1;
|
| 862 |
goto cleanup;
|
| 863 |
}
|
| 864 |
}
|
| 865 |
|
| 866 |
prints("\033[1;31m连接成功！\033[m\r\n");
|
| 867 |
iflush();
|
| 868 |
log_common("BBSNET connect to %s:%d from %s:%d by [%s]",
|
| 869 |
remote_addr, remote_port, local_addr, local_port, BBS_username);
|
| 870 |
|
| 871 |
snprintf(tocode, sizeof(tocode), "%s%s", bbsnet_conf[n].charset,
|
| 872 |
(strcasecmp(stdio_charset, bbsnet_conf[n].charset) == 0 ? "" : "//IGNORE"));
|
| 873 |
input_cd = iconv_open(tocode, stdio_charset);
|
| 874 |
if (input_cd == (iconv_t)(-1))
|
| 875 |
{
|
| 876 |
log_error("iconv_open(%s->%s) error: %d", stdio_charset, tocode, errno);
|
| 877 |
ret = -1;
|
| 878 |
goto cleanup;
|
| 879 |
}
|
| 880 |
|
| 881 |
snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset,
|
| 882 |
(strcasecmp(bbsnet_conf[n].charset, stdio_charset) == 0 ? "" : "//TRANSLIT"));
|
| 883 |
output_cd = iconv_open(tocode, bbsnet_conf[n].charset);
|
| 884 |
if (output_cd == (iconv_t)(-1))
|
| 885 |
{
|
| 886 |
log_error("iconv_open(%s->%s) error: %d", bbsnet_conf[n].charset, tocode, errno);
|
| 887 |
ret = -1;
|
| 888 |
goto cleanup;
|
| 889 |
}
|
| 890 |
|
| 891 |
#ifdef HAVE_SYS_EPOLL_H
|
| 892 |
ev.events = EPOLLIN | EPOLLOUT | EPOLLET;
|
| 893 |
ev.data.fd = sock;
|
| 894 |
if (epoll_ctl(epollfd, EPOLL_CTL_MOD, sock, &ev) == -1)
|
| 895 |
{
|
| 896 |
log_error("epoll_ctl(socket) error (%d)", errno);
|
| 897 |
ret = -1;
|
| 898 |
goto cleanup;
|
| 899 |
}
|
| 900 |
|
| 901 |
ev.events = EPOLLOUT | EPOLLET;
|
| 902 |
ev.data.fd = STDOUT_FILENO;
|
| 903 |
if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
|
| 904 |
{
|
| 905 |
log_error("epoll_ctl(STDOUT_FILENO) error (%d)", errno);
|
| 906 |
ret = -1;
|
| 907 |
goto cleanup;
|
| 908 |
}
|
| 909 |
#endif
|
| 910 |
|
| 911 |
BBS_last_access_tm = t_begin = time(NULL);
|
| 912 |
loop = 1;
|
| 913 |
|
| 914 |
while (loop && !SYS_server_exit)
|
| 915 |
{
|
| 916 |
if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
|
| 917 |
{
|
| 918 |
log_debug("SSH channel is closed");
|
| 919 |
loop = 0;
|
| 920 |
break;
|
| 921 |
}
|
| 922 |
|
| 923 |
if (bbsnet_conf[n].use_ssh && ssh_channel_is_closed(outbound_channel))
|
| 924 |
{
|
| 925 |
log_debug("Outbound channel is closed");
|
| 926 |
loop = 0;
|
| 927 |
break;
|
| 928 |
}
|
| 929 |
|
| 930 |
#ifdef HAVE_SYS_EPOLL_H
|
| 931 |
nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
|
| 932 |
ret = nfds;
|
| 933 |
#else
|
| 934 |
pfds[0].fd = STDIN_FILENO;
|
| 935 |
pfds[0].events = POLLIN;
|
| 936 |
pfds[1].fd = sock;
|
| 937 |
pfds[1].events = POLLIN | POLLOUT;
|
| 938 |
pfds[2].fd = STDOUT_FILENO;
|
| 939 |
pfds[2].events = POLLOUT;
|
| 940 |
nfds = 3;
|
| 941 |
ret = poll(pfds, (nfds_t)nfds, 100); // 0.1 second
|
| 942 |
#endif
|
| 943 |
|
| 944 |
if (ret < 0)
|
| 945 |
{
|
| 946 |
if (errno != EINTR)
|
| 947 |
{
|
| 948 |
#ifdef HAVE_SYS_EPOLL_H
|
| 949 |
log_error("epoll_wait() error (%d)", errno);
|
| 950 |
#else
|
| 951 |
log_error("poll() error (%d)", errno);
|
| 952 |
#endif
|
| 953 |
break;
|
| 954 |
}
|
| 955 |
continue;
|
| 956 |
}
|
| 957 |
else if (ret == 0) // timeout
|
| 958 |
{
|
| 959 |
if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
|
| 960 |
{
|
| 961 |
log_debug("User input timeout");
|
| 962 |
break;
|
| 963 |
}
|
| 964 |
}
|
| 965 |
|
| 966 |
for (int i = 0; i < nfds; i++)
|
| 967 |
{
|
| 968 |
#ifdef HAVE_SYS_EPOLL_H
|
| 969 |
if (events[i].events & (EPOLLHUP | EPOLLERR))
|
| 970 |
#else
|
| 971 |
if (pfds[i].revents & (POLLHUP | POLLERR))
|
| 972 |
#endif
|
| 973 |
{
|
| 974 |
#ifdef HAVE_SYS_EPOLL_H
|
| 975 |
log_debug("FD (%d) error events (%d)", events[i].data.fd, events[i].events);
|
| 976 |
#else
|
| 977 |
log_debug("FD (%d) error events (%d)", pfds[i].fd, pfds[i].revents);
|
| 978 |
#endif
|
| 979 |
loop = 0;
|
| 980 |
break;
|
| 981 |
}
|
| 982 |
|
| 983 |
#ifdef HAVE_SYS_EPOLL_H
|
| 984 |
if (events[i].data.fd == STDIN_FILENO && (events[i].events & EPOLLIN))
|
| 985 |
#else
|
| 986 |
if (pfds[i].fd == STDIN_FILENO && (pfds[i].revents & POLLIN))
|
| 987 |
#endif
|
| 988 |
{
|
| 989 |
stdin_read_wait = 1;
|
| 990 |
}
|
| 991 |
|
| 992 |
#ifdef HAVE_SYS_EPOLL_H
|
| 993 |
if (events[i].data.fd == sock)
|
| 994 |
#else
|
| 995 |
if (pfds[i].fd == sock)
|
| 996 |
#endif
|
| 997 |
{
|
| 998 |
#ifdef HAVE_SYS_EPOLL_H
|
| 999 |
if (events[i].events & EPOLLIN)
|
| 1000 |
#else
|
| 1001 |
if (pfds[i].revents & POLLIN)
|
| 1002 |
#endif
|
| 1003 |
{
|
| 1004 |
sock_read_wait = 1;
|
| 1005 |
}
|
| 1006 |
|
| 1007 |
#ifdef HAVE_SYS_EPOLL_H
|
| 1008 |
if (events[i].events & EPOLLOUT)
|
| 1009 |
#else
|
| 1010 |
if (pfds[i].revents & POLLOUT)
|
| 1011 |
#endif
|
| 1012 |
{
|
| 1013 |
sock_write_wait = 1;
|
| 1014 |
}
|
| 1015 |
}
|
| 1016 |
|
| 1017 |
#ifdef HAVE_SYS_EPOLL_H
|
| 1018 |
if (events[i].data.fd == STDOUT_FILENO && (events[i].events & EPOLLOUT))
|
| 1019 |
#else
|
| 1020 |
if (pfds[i].fd == STDOUT_FILENO && (pfds[i].revents & POLLOUT))
|
| 1021 |
#endif
|
| 1022 |
{
|
| 1023 |
stdout_write_wait = 1;
|
| 1024 |
}
|
| 1025 |
}
|
| 1026 |
|
| 1027 |
if (stdin_read_wait)
|
| 1028 |
{
|
| 1029 |
while (input_buf_len < sizeof(input_buf) && !SYS_server_exit)
|
| 1030 |
{
|
| 1031 |
if (SSH_v2)
|
| 1032 |
{
|
| 1033 |
ret = ssh_channel_read_nonblocking(SSH_channel, input_buf + input_buf_len, sizeof(input_buf) - (uint32_t)input_buf_len, 0);
|
| 1034 |
if (ret == SSH_ERROR)
|
| 1035 |
{
|
| 1036 |
log_debug("ssh_channel_read_nonblocking() error: %s", ssh_get_error(SSH_session));
|
| 1037 |
loop = 0;
|
| 1038 |
break;
|
| 1039 |
}
|
| 1040 |
else if (ret == SSH_EOF)
|
| 1041 |
{
|
| 1042 |
stdin_read_wait = 0;
|
| 1043 |
loop = 0;
|
| 1044 |
break;
|
| 1045 |
}
|
| 1046 |
else if (ret == 0)
|
| 1047 |
{
|
| 1048 |
// Send NO-OP to remote server
|
| 1049 |
input_buf[input_buf_len] = '\0';
|
| 1050 |
input_buf_len++;
|
| 1051 |
|
| 1052 |
BBS_last_access_tm = time(NULL);
|
| 1053 |
stdin_read_wait = 0;
|
| 1054 |
break; // Check whether channel is still open
|
| 1055 |
}
|
| 1056 |
}
|
| 1057 |
else
|
| 1058 |
{
|
| 1059 |
ret = (int)read(STDIN_FILENO, input_buf + input_buf_len, sizeof(input_buf) - (size_t)input_buf_len);
|
| 1060 |
}
|
| 1061 |
if (ret < 0)
|
| 1062 |
{
|
| 1063 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
| 1064 |
{
|
| 1065 |
stdin_read_wait = 0;
|
| 1066 |
break;
|
| 1067 |
}
|
| 1068 |
else if (errno == EINTR)
|
| 1069 |
{
|
| 1070 |
continue;
|
| 1071 |
}
|
| 1072 |
else
|
| 1073 |
{
|
| 1074 |
log_error("read(STDIN) error (%d)", errno);
|
| 1075 |
loop = 0;
|
| 1076 |
break;
|
| 1077 |
}
|
| 1078 |
}
|
| 1079 |
else if (ret == 0) // broken pipe
|
| 1080 |
{
|
| 1081 |
log_debug("read(STDIN) EOF");
|
| 1082 |
stdin_read_wait = 0;
|
| 1083 |
loop = 0;
|
| 1084 |
break;
|
| 1085 |
}
|
| 1086 |
else
|
| 1087 |
{
|
| 1088 |
input_buf_len += ret;
|
| 1089 |
BBS_last_access_tm = time(NULL);
|
| 1090 |
|
| 1091 |
// Refresh current action while user input
|
| 1092 |
if (user_online_update("BBS_NET") < 0)
|
| 1093 |
{
|
| 1094 |
log_error("user_online_update(BBS_NET) error");
|
| 1095 |
}
|
| 1096 |
|
| 1097 |
continue;
|
| 1098 |
}
|
| 1099 |
}
|
| 1100 |
}
|
| 1101 |
|
| 1102 |
if (sock_write_wait)
|
| 1103 |
{
|
| 1104 |
if (input_buf_offset < input_buf_len)
|
| 1105 |
{
|
| 1106 |
// For debug
|
| 1107 |
#ifdef _DEBUG
|
| 1108 |
for (int j = input_buf_offset; j < input_buf_len; j++)
|
| 1109 |
{
|
| 1110 |
log_debug("input: <--[%u]", (unsigned char)(input_buf[j]));
|
| 1111 |
}
|
| 1112 |
#endif
|
| 1113 |
|
| 1114 |
ret = io_buf_conv(input_cd, input_buf, &input_buf_len, &input_buf_offset, input_conv, sizeof(input_conv), &input_conv_len);
|
| 1115 |
if (ret < 0)
|
| 1116 |
{
|
| 1117 |
log_error("io_buf_conv(input, %d, %d, %d) error", input_buf_len, input_buf_offset, input_conv_len);
|
| 1118 |
input_buf_len = input_buf_offset; // Discard invalid sequence
|
| 1119 |
}
|
| 1120 |
|
| 1121 |
// For debug
|
| 1122 |
#ifdef _DEBUG
|
| 1123 |
for (int j = input_conv_offset; j < input_conv_len; j++)
|
| 1124 |
{
|
| 1125 |
log_debug("input_conv: <--[%u]", (unsigned char)(input_conv[j]));
|
| 1126 |
}
|
| 1127 |
#endif
|
| 1128 |
}
|
| 1129 |
|
| 1130 |
while (input_conv_offset < input_conv_len && !SYS_server_exit)
|
| 1131 |
{
|
| 1132 |
if (bbsnet_conf[n].use_ssh)
|
| 1133 |
{
|
| 1134 |
ret = ssh_channel_write(outbound_channel, input_conv + input_conv_offset, (uint32_t)(input_conv_len - input_conv_offset));
|
| 1135 |
if (ret == SSH_ERROR)
|
| 1136 |
{
|
| 1137 |
log_debug("ssh_channel_write() error: %s", ssh_get_error(outbound_session));
|
| 1138 |
loop = 0;
|
| 1139 |
break;
|
| 1140 |
}
|
| 1141 |
}
|
| 1142 |
else
|
| 1143 |
{
|
| 1144 |
ret = (int)write(sock, input_conv + input_conv_offset, (size_t)(input_conv_len - input_conv_offset));
|
| 1145 |
}
|
| 1146 |
if (ret < 0)
|
| 1147 |
{
|
| 1148 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
| 1149 |
{
|
| 1150 |
sock_write_wait = 0;
|
| 1151 |
break;
|
| 1152 |
}
|
| 1153 |
else if (errno == EINTR)
|
| 1154 |
{
|
| 1155 |
continue;
|
| 1156 |
}
|
| 1157 |
else
|
| 1158 |
{
|
| 1159 |
log_debug("write(socket) error (%d)", errno);
|
| 1160 |
loop = 0;
|
| 1161 |
break;
|
| 1162 |
}
|
| 1163 |
}
|
| 1164 |
else if (ret == 0) // broken pipe
|
| 1165 |
{
|
| 1166 |
log_debug("write(socket) EOF");
|
| 1167 |
sock_write_wait = 0;
|
| 1168 |
loop = 0;
|
| 1169 |
break;
|
| 1170 |
}
|
| 1171 |
else
|
| 1172 |
{
|
| 1173 |
input_conv_offset += ret;
|
| 1174 |
if (input_conv_offset >= input_conv_len) // Output buffer complete
|
| 1175 |
{
|
| 1176 |
input_conv_offset = 0;
|
| 1177 |
input_conv_len = 0;
|
| 1178 |
break;
|
| 1179 |
}
|
| 1180 |
continue;
|
| 1181 |
}
|
| 1182 |
}
|
| 1183 |
}
|
| 1184 |
|
| 1185 |
if (sock_read_wait)
|
| 1186 |
{
|
| 1187 |
while (output_buf_len < sizeof(output_buf) && !SYS_server_exit)
|
| 1188 |
{
|
| 1189 |
if (bbsnet_conf[n].use_ssh)
|
| 1190 |
{
|
| 1191 |
ret = ssh_channel_read_nonblocking(outbound_channel, output_buf + output_buf_len,
|
| 1192 |
(uint32_t)(sizeof(output_buf) - (size_t)output_buf_len), 0);
|
| 1193 |
if (ret == SSH_ERROR)
|
| 1194 |
{
|
| 1195 |
log_debug("ssh_channel_read_nonblocking() error: %s", ssh_get_error(outbound_session));
|
| 1196 |
loop = 0;
|
| 1197 |
break;
|
| 1198 |
}
|
| 1199 |
else if (ret == SSH_EOF)
|
| 1200 |
{
|
| 1201 |
sock_read_wait = 0;
|
| 1202 |
loop = 0;
|
| 1203 |
break;
|
| 1204 |
}
|
| 1205 |
else if (ret == 0)
|
| 1206 |
{
|
| 1207 |
sock_read_wait = 0;
|
| 1208 |
break;
|
| 1209 |
}
|
| 1210 |
}
|
| 1211 |
else
|
| 1212 |
{
|
| 1213 |
ret = (int)read(sock, output_buf + output_buf_len, sizeof(output_buf) - (size_t)output_buf_len);
|
| 1214 |
}
|
| 1215 |
if (ret < 0)
|
| 1216 |
{
|
| 1217 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
| 1218 |
{
|
| 1219 |
sock_read_wait = 0;
|
| 1220 |
break;
|
| 1221 |
}
|
| 1222 |
else if (errno == EINTR)
|
| 1223 |
{
|
| 1224 |
continue;
|
| 1225 |
}
|
| 1226 |
else
|
| 1227 |
{
|
| 1228 |
log_debug("read(socket) error (%d)", errno);
|
| 1229 |
loop = 0;
|
| 1230 |
break;
|
| 1231 |
}
|
| 1232 |
}
|
| 1233 |
else if (ret == 0) // broken pipe
|
| 1234 |
{
|
| 1235 |
log_debug("read(socket) EOF");
|
| 1236 |
sock_read_wait = 0;
|
| 1237 |
loop = 0;
|
| 1238 |
break;
|
| 1239 |
}
|
| 1240 |
else
|
| 1241 |
{
|
| 1242 |
output_buf_len += ret;
|
| 1243 |
continue;
|
| 1244 |
}
|
| 1245 |
}
|
| 1246 |
}
|
| 1247 |
|
| 1248 |
if (stdout_write_wait)
|
| 1249 |
{
|
| 1250 |
if (output_buf_offset < output_buf_len)
|
| 1251 |
{
|
| 1252 |
ret = io_buf_conv(output_cd, output_buf, &output_buf_len, &output_buf_offset, output_conv, sizeof(output_conv), &output_conv_len);
|
| 1253 |
if (ret < 0)
|
| 1254 |
{
|
| 1255 |
log_error("io_buf_conv(output, %d, %d, %d) error", output_buf_len, output_buf_offset, output_conv_len);
|
| 1256 |
output_buf_len = output_buf_offset; // Discard invalid sequence
|
| 1257 |
}
|
| 1258 |
}
|
| 1259 |
|
| 1260 |
while (output_conv_offset < output_conv_len && !SYS_server_exit)
|
| 1261 |
{
|
| 1262 |
if (SSH_v2)
|
| 1263 |
{
|
| 1264 |
ret = ssh_channel_write(SSH_channel, output_conv + output_conv_offset, (uint32_t)(output_conv_len - output_conv_offset));
|
| 1265 |
if (ret == SSH_ERROR)
|
| 1266 |
{
|
| 1267 |
log_debug("ssh_channel_write() error: %s", ssh_get_error(SSH_session));
|
| 1268 |
loop = 0;
|
| 1269 |
break;
|
| 1270 |
}
|
| 1271 |
}
|
| 1272 |
else
|
| 1273 |
{
|
| 1274 |
ret = (int)write(STDOUT_FILENO, output_conv + output_conv_offset, (size_t)(output_conv_len - output_conv_offset));
|
| 1275 |
}
|
| 1276 |
if (ret < 0)
|
| 1277 |
{
|
| 1278 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
| 1279 |
{
|
| 1280 |
stdout_write_wait = 0;
|
| 1281 |
break;
|
| 1282 |
}
|
| 1283 |
else if (errno == EINTR)
|
| 1284 |
{
|
| 1285 |
continue;
|
| 1286 |
}
|
| 1287 |
else
|
| 1288 |
{
|
| 1289 |
log_debug("write(STDOUT) error (%d)", errno);
|
| 1290 |
loop = 0;
|
| 1291 |
break;
|
| 1292 |
}
|
| 1293 |
}
|
| 1294 |
else if (ret == 0) // broken pipe
|
| 1295 |
{
|
| 1296 |
log_debug("write(STDOUT) EOF");
|
| 1297 |
stdout_write_wait = 0;
|
| 1298 |
loop = 0;
|
| 1299 |
break;
|
| 1300 |
}
|
| 1301 |
else
|
| 1302 |
{
|
| 1303 |
output_conv_offset += ret;
|
| 1304 |
if (output_conv_offset >= output_conv_len) // Output buffer complete
|
| 1305 |
{
|
| 1306 |
output_conv_offset = 0;
|
| 1307 |
output_conv_len = 0;
|
| 1308 |
break;
|
| 1309 |
}
|
| 1310 |
continue;
|
| 1311 |
}
|
| 1312 |
}
|
| 1313 |
}
|
| 1314 |
}
|
| 1315 |
|
| 1316 |
ret = 1; // Normal disconnect
|
| 1317 |
BBS_last_access_tm = time(NULL);
|
| 1318 |
t_used = BBS_last_access_tm - t_begin;
|
| 1319 |
log_common("BBSNET disconnect, %ld days %ld hours %ld minutes %ld seconds used",
|
| 1320 |
t_used / 86400, t_used % 86400 / 3600, t_used % 3600 / 60, t_used % 60);
|
| 1321 |
|
| 1322 |
cleanup:
|
| 1323 |
// Clear sensitive data
|
| 1324 |
memset(remote_pass, 0, sizeof(remote_pass));
|
| 1325 |
memset(remote_user, 0, sizeof(remote_user));
|
| 1326 |
|
| 1327 |
if (input_cd != (iconv_t)(-1) && iconv_close(input_cd) < 0)
|
| 1328 |
{
|
| 1329 |
log_error("iconv_close(input) error (%d)", errno);
|
| 1330 |
}
|
| 1331 |
if (output_cd != (iconv_t)(-1) && iconv_close(output_cd) < 0)
|
| 1332 |
{
|
| 1333 |
log_error("iconv_close(output) error (%d)", errno);
|
| 1334 |
}
|
| 1335 |
|
| 1336 |
#ifdef HAVE_SYS_EPOLL_H
|
| 1337 |
if (epollfd != -1 && close(epollfd) < 0)
|
| 1338 |
{
|
| 1339 |
log_error("close(epoll) error (%d)");
|
| 1340 |
}
|
| 1341 |
#endif
|
| 1342 |
|
| 1343 |
if (bbsnet_conf[n].use_ssh)
|
| 1344 |
{
|
| 1345 |
if (outbound_channel != NULL)
|
| 1346 |
{
|
| 1347 |
ssh_channel_send_eof(outbound_channel);
|
| 1348 |
ssh_channel_close(outbound_channel);
|
| 1349 |
ssh_channel_free(outbound_channel);
|
| 1350 |
}
|
| 1351 |
if (outbound_session != NULL)
|
| 1352 |
{
|
| 1353 |
ssh_disconnect(outbound_session);
|
| 1354 |
ssh_free(outbound_session);
|
| 1355 |
}
|
| 1356 |
}
|
| 1357 |
|
| 1358 |
// Restore STDIN/STDOUT flags
|
| 1359 |
if (flags_stdin != -1 && fcntl(STDIN_FILENO, F_SETFL, flags_stdin) == -1)
|
| 1360 |
{
|
| 1361 |
log_error("fcntl(F_SETFL) error (%d)", errno);
|
| 1362 |
}
|
| 1363 |
if (flags_stdout != -1 && fcntl(STDOUT_FILENO, F_SETFL, flags_stdout) == -1)
|
| 1364 |
{
|
| 1365 |
log_error("fcntl(F_SETFL) error (%d)", errno);
|
| 1366 |
}
|
| 1367 |
|
| 1368 |
if (sock != -1)
|
| 1369 |
{
|
| 1370 |
close(sock);
|
| 1371 |
}
|
| 1372 |
|
| 1373 |
if (res)
|
| 1374 |
{
|
| 1375 |
freeaddrinfo(res);
|
| 1376 |
}
|
| 1377 |
|
| 1378 |
return ret;
|
| 1379 |
}
|
| 1380 |
|
| 1381 |
static int bbsnet_refresh()
|
| 1382 |
{
|
| 1383 |
clearscr();
|
| 1384 |
|
| 1385 |
moveto(1, 1);
|
| 1386 |
prints(" ------------------------------------------------------------------------------ ");
|
| 1387 |
for (int i = 2; i < 19; i++)
|
| 1388 |
{
|
| 1389 |
moveto(i, 1);
|
| 1390 |
prints("|");
|
| 1391 |
moveto(i, 80);
|
| 1392 |
prints("|");
|
| 1393 |
}
|
| 1394 |
moveto(19, 1);
|
| 1395 |
prints("|------------------------------------------------------------------------------|");
|
| 1396 |
moveto(22, 1);
|
| 1397 |
prints(" ------------------------------------------------------------------------------ ");
|
| 1398 |
moveto(23, 1);
|
| 1399 |
prints(" [\033[1;32mCtrl+C\033[m]退出");
|
| 1400 |
|
| 1401 |
iflush();
|
| 1402 |
|
| 1403 |
return 0;
|
| 1404 |
}
|
| 1405 |
|
| 1406 |
static int bbsnet_selchange()
|
| 1407 |
{
|
| 1408 |
int i = bbsnet_menu.menu_item_pos[0];
|
| 1409 |
|
| 1410 |
moveto(20, 1);
|
| 1411 |
clrtoeol();
|
| 1412 |
prints("|\033[1m单位: \033[1;33m%s\033[m%*s 站名: \033[1;33m%s\033[m%*s 类型: \033[1;33m%s\033[m",
|
| 1413 |
bbsnet_conf[i].org_name, 20 - str_length(bbsnet_conf[i].org_name, 1), "",
|
| 1414 |
bbsnet_conf[i].site_name, 20 - str_length(bbsnet_conf[i].site_name, 1), "",
|
| 1415 |
(bbsnet_conf[i].use_ssh ? "SSH" : "Telnet"));
|
| 1416 |
moveto(20, 80);
|
| 1417 |
prints("|");
|
| 1418 |
moveto(21, 1);
|
| 1419 |
clrtoeol();
|
| 1420 |
prints("|\033[1m连往: \033[1;33m%-20s\033[m 端口: \033[1;33m%-5s\033[m 编码: \033[1;33m%s\033[m",
|
| 1421 |
bbsnet_conf[i].host_name, bbsnet_conf[i].port, bbsnet_conf[i].charset);
|
| 1422 |
moveto(21, 80);
|
| 1423 |
prints("|");
|
| 1424 |
iflush();
|
| 1425 |
|
| 1426 |
return 0;
|
| 1427 |
}
|
| 1428 |
|
| 1429 |
int bbs_net()
|
| 1430 |
{
|
| 1431 |
int ch;
|
| 1432 |
|
| 1433 |
if (load_bbsnet_conf(CONF_BBSNET) < 0)
|
| 1434 |
{
|
| 1435 |
clearscr();
|
| 1436 |
moveto(1, 1);
|
| 1437 |
prints("加载穿梭配置失败！");
|
| 1438 |
press_any_key();
|
| 1439 |
return -1;
|
| 1440 |
}
|
| 1441 |
|
| 1442 |
bbsnet_refresh();
|
| 1443 |
display_menu(&bbsnet_menu);
|
| 1444 |
bbsnet_selchange();
|
| 1445 |
|
| 1446 |
while (!SYS_server_exit)
|
| 1447 |
{
|
| 1448 |
ch = igetch(100);
|
| 1449 |
|
| 1450 |
if (ch != KEY_NULL && ch != KEY_TIMEOUT)
|
| 1451 |
{
|
| 1452 |
BBS_last_access_tm = time(NULL);
|
| 1453 |
}
|
| 1454 |
|
| 1455 |
switch (ch)
|
| 1456 |
{
|
| 1457 |
case KEY_NULL: // broken pipe
|
| 1458 |
log_debug("KEY_NULL");
|
| 1459 |
goto cleanup;
|
| 1460 |
case KEY_TIMEOUT:
|
| 1461 |
if (time(NULL) - BBS_last_access_tm >= BBS_max_user_idle_time)
|
| 1462 |
{
|
| 1463 |
log_debug("User input timeout");
|
| 1464 |
goto cleanup;
|
| 1465 |
}
|
| 1466 |
continue;
|
| 1467 |
case KEY_ESC:
|
| 1468 |
case Ctrl('C'): // user cancel
|
| 1469 |
goto cleanup;
|
| 1470 |
case CR:
|
| 1471 |
if (bbsnet_connect(bbsnet_menu.menu_item_pos[0]) < 0)
|
| 1472 |
{
|
| 1473 |
log_debug("bbsnet_connect() error");
|
| 1474 |
}
|
| 1475 |
// Force cleanup anything remaining in the output buffer
|
| 1476 |
clearscr();
|
| 1477 |
iflush();
|
| 1478 |
// Clear screen and redraw menu
|
| 1479 |
bbsnet_refresh();
|
| 1480 |
display_menu(&bbsnet_menu);
|
| 1481 |
bbsnet_selchange();
|
| 1482 |
break;
|
| 1483 |
case KEY_UP:
|
| 1484 |
for (int i = 0; i < STATION_PER_LINE; i++)
|
| 1485 |
{
|
| 1486 |
menu_control(&bbsnet_menu, KEY_UP);
|
| 1487 |
}
|
| 1488 |
bbsnet_selchange();
|
| 1489 |
break;
|
| 1490 |
case KEY_DOWN:
|
| 1491 |
for (int i = 0; i < STATION_PER_LINE; i++)
|
| 1492 |
{
|
| 1493 |
menu_control(&bbsnet_menu, KEY_DOWN);
|
| 1494 |
}
|
| 1495 |
bbsnet_selchange();
|
| 1496 |
break;
|
| 1497 |
case KEY_LEFT:
|
| 1498 |
menu_control(&bbsnet_menu, KEY_UP);
|
| 1499 |
bbsnet_selchange();
|
| 1500 |
break;
|
| 1501 |
case KEY_RIGHT:
|
| 1502 |
menu_control(&bbsnet_menu, KEY_DOWN);
|
| 1503 |
bbsnet_selchange();
|
| 1504 |
break;
|
| 1505 |
case KEY_HOME:
|
| 1506 |
case KEY_PGUP:
|
| 1507 |
menu_control(&bbsnet_menu, KEY_PGUP);
|
| 1508 |
bbsnet_selchange();
|
| 1509 |
break;
|
| 1510 |
case KEY_END:
|
| 1511 |
case KEY_PGDN:
|
| 1512 |
menu_control(&bbsnet_menu, KEY_PGDN);
|
| 1513 |
bbsnet_selchange();
|
| 1514 |
break;
|
| 1515 |
default:
|
| 1516 |
menu_control(&bbsnet_menu, ch);
|
| 1517 |
bbsnet_selchange();
|
| 1518 |
break;
|
| 1519 |
}
|
| 1520 |
}
|
| 1521 |
|
| 1522 |
cleanup:
|
| 1523 |
unload_bbsnet_conf();
|
| 1524 |
|
| 1525 |
return 0;
|
| 1526 |
}
|
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