lbbs/src/user_list_display.c

/***************************************************************************
                                         user_list_display.c  -  description
                                                         -------------------
        Copyright            : (C) 2004-2025 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 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "common.h"
#include "io.h"
#include "log.h"
#include "login.h"
#include "screen.h"
#include "str_process.h"
#include "user_list.h"
#include "user_priv.h"
#include "user_info_display.h"
#include "user_list_display.h"
#include <string.h>
#include <time.h>
#include <sys/param.h>

enum select_cmd_t
{
        EXIT_LIST = 0,
        VIEW_USER,
        CHANGE_PAGE,
        REFRESH_LIST,
        SHOW_HELP,
};

static int user_list_draw_screen(int online_user)
{
        clearscr();
        show_top((online_user ? "[线上使用者]" : "[已注册用户]"), BBS_name, "");
        moveto(2, 0);
        prints("返回[\033[1;32m←\033[0;37m,\033[1;32mESC\033[0;37m] 选择[\033[1;32m↑\033[0;37m,\033[1;32m↓\033[0;37m] "
                   "查看[\033[1;32m→\033[0;37m,\033[1;32mENTER\033[0;37m] 帮助[\033[1;32mh\033[0;37m]\033[m");
        moveto(3, 0);

        if (online_user)
        {
                prints("\033[44;37m \033[1;37m 编  号  用户名       昵称                 在线时长 空闲   最后活动            \033[m");
        }
        else
        {
                prints("\033[44;37m \033[1;37m 编  号  用户名       昵称                 上次登陆距今                        \033[m");
        }

        return 0;
}

static int user_list_draw_items(int page_id, USER_INFO *p_users, int user_count)
{
        char str_time_login[LINE_BUFFER_LEN];
        time_t tm_now;
        time_t tm_duration;
        struct tm *p_tm;
        int i;

        clrline(4, 23);

        time(&tm_now);

        for (i = 0; i < user_count; i++)
        {
                tm_duration = tm_now - p_users[i].last_login_dt;
                p_tm = gmtime(&tm_duration);
                if (p_tm == NULL)
                {
                        log_error("Invalid time duration\n");
                        str_time_login[0] = '\0';
                }
                else if (p_tm->tm_year > 70)
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d年%d天", p_tm->tm_year - 70, p_tm->tm_yday);
                }
                else if (p_tm->tm_yday > 0)
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d天", p_tm->tm_yday);
                }
                else if (p_tm->tm_hour > 0)
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d:%.2d", p_tm->tm_hour, p_tm->tm_min);
                }
                else
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d\'%.2d\"", p_tm->tm_min, p_tm->tm_sec);
                }

                moveto(4 + i, 1);

                prints("  %6d  %s%*s %s%*s %s",
                           p_users[i].id + 1,
                           p_users[i].username,
                           BBS_username_max_len - str_length(p_users[i].username, 1),
                           "",
                           p_users[i].nickname,
                           BBS_nickname_max_len / 2 - str_length(p_users[i].nickname, 1),
                           "",
                           str_time_login);
        }

        return 0;
}

static int user_online_list_draw_items(int page_id, USER_ONLINE_INFO *p_users, int user_count)
{
        char str_time_login[LINE_BUFFER_LEN];
        char str_time_idle[LINE_BUFFER_LEN];
        const char *p_action_title;
        time_t tm_now;
        time_t tm_duration;
        struct tm *p_tm;
        int i;

        clrline(4, 23);

        time(&tm_now);

        for (i = 0; i < user_count; i++)
        {
                tm_duration = tm_now - p_users[i].login_tm;
                p_tm = gmtime(&tm_duration);
                if (p_tm == NULL)
                {
                        log_error("Invalid time duration\n");
                        str_time_login[0] = '\0';
                }
                else if (p_tm->tm_yday > 0)
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%dd%dh", p_tm->tm_yday, p_tm->tm_hour);
                }
                else if (p_tm->tm_hour > 0)
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d:%.2d", p_tm->tm_hour, p_tm->tm_min);
                }
                else
                {
                        snprintf(str_time_login, sizeof(str_time_login),
                                         "%d\'%.2d\"", p_tm->tm_min, p_tm->tm_sec);
                }

                tm_duration = tm_now - p_users[i].last_tm;
                p_tm = gmtime(&tm_duration);
                if (p_tm == NULL)
                {
                        log_error("Invalid time duration\n");
                        str_time_idle[0] = '\0';
                }
                else if (p_tm->tm_min > 0)
                {
                        snprintf(str_time_idle, sizeof(str_time_idle),
                                         "%d\'%d\"", p_tm->tm_min, p_tm->tm_sec);
                }
                else
                {
                        snprintf(str_time_idle, sizeof(str_time_idle),
                                         "%d\"", p_tm->tm_sec);
                }

                p_action_title = (p_users[i].current_action_title != NULL
                                                          ? p_users[i].current_action_title
                                                          : p_users[i].current_action);

                moveto(4 + i, 1);

                prints("  %6d  %s%*s %s%*s %s%*s %s%*s %s",
                           p_users[i].id + 1,
                           p_users[i].user_info.username,
                           BBS_username_max_len - str_length(p_users[i].user_info.username, 1),
                           "",
                           p_users[i].user_info.nickname,
                           BBS_nickname_max_len / 2 - str_length(p_users[i].user_info.nickname, 1),
                           "",
                           str_time_login,
                           8 - str_length(str_time_login, 1),
                           "",
                           str_time_idle,
                           6 - str_length(str_time_idle, 1),
                           "",
                           p_action_title);
        }

        return 0;
}

static enum select_cmd_t user_list_select(int total_page, int item_count, int *p_page_id, int *p_selected_index)
{
        int old_page_id = *p_page_id;
        int old_selected_index = *p_selected_index;
        int ch;

        if (item_count > 0 && *p_selected_index >= 0)
        {
                moveto(4 + *p_selected_index, 1);
                outc('>');
                iflush();
        }

        while (!SYS_server_exit)
        {
                ch = igetch(100);

                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");
                case KEY_ESC:
                case KEY_LEFT:
                        return EXIT_LIST; // exit list
                case KEY_TIMEOUT:
                        if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
                        {
                                log_error("User input timeout\n");
                                return EXIT_LIST; // exit list
                        }
                        continue;
                case CR:
                case KEY_RIGHT:
                        if (item_count > 0)
                        {
                                return VIEW_USER;
                        }
                        break;
                case KEY_HOME:
                        *p_page_id = 0;
                case 'P':
                case KEY_PGUP:
                        *p_selected_index = 0;
                case 'k':
                case KEY_UP:
                        if (*p_selected_index <= 0)
                        {
                                if (*p_page_id > 0)
                                {
                                        (*p_page_id)--;
                                        *p_selected_index = BBS_user_limit_per_page - 1;
                                }
                                else if (ch == KEY_UP || ch == 'k') // Rotate to the tail of list
                                {
                                        if (total_page > 0)
                                        {
                                                *p_page_id = total_page - 1;
                                        }
                                        if (item_count > 0)
                                        {
                                                *p_selected_index = item_count - 1;
                                        }
                                }
                        }
                        else
                        {
                                (*p_selected_index)--;
                        }
                        break;
                case '$':
                case KEY_END:
                        if (total_page > 0)
                        {
                                *p_page_id = total_page - 1;
                        }
                case 'N':
                case KEY_PGDN:
                        if (item_count > 0)
                        {
                                *p_selected_index = item_count - 1;
                        }
                case 'j':
                case KEY_DOWN:
                        if (*p_selected_index + 1 >= item_count) // next page
                        {
                                if (*p_page_id + 1 < total_page)
                                {
                                        (*p_page_id)++;
                                        *p_selected_index = 0;
                                }
                                else if (ch == KEY_DOWN || ch == 'j') // Rotate to the head of list
                                {
                                        *p_page_id = 0;
                                        *p_selected_index = 0;
                                }
                        }
                        else
                        {
                                (*p_selected_index)++;
                        }
                        break;
                case KEY_F5:
                        return REFRESH_LIST;
                case 'h':
                        return SHOW_HELP;
                default:
                        break;
                }

                if (old_page_id != *p_page_id)
                {
                        return CHANGE_PAGE;
                }

                if (item_count > 0 && old_selected_index != *p_selected_index)
                {
                        if (old_selected_index >= 0)
                        {
                                moveto(4 + old_selected_index, 1);
                                outc(' ');
                        }
                        if (*p_selected_index >= 0)
                        {
                                moveto(4 + *p_selected_index, 1);
                                outc('>');
                        }
                        iflush();

                        old_selected_index = *p_selected_index;
                }
        }

        return EXIT_LIST;
}

int user_list_display(int online_user)
{
        char page_info_str[LINE_BUFFER_LEN];
        USER_INFO users[BBS_user_limit_per_page];
        USER_ONLINE_INFO online_users[BBS_user_limit_per_page];
        int user_count = 0;
        int page_count = 0;
        int page_id = 0;
        int selected_index = 0;
        int ret = 0;

        user_list_draw_screen(online_user);

        if (online_user)
        {
                ret = query_user_online_list(page_id, online_users, &user_count, &page_count);
                if (ret < 0)
                {
                        log_error("query_user_online_list(page_id=%d) error\n", page_id);
                        return -2;
                }
        }
        else
        {
                ret = query_user_list(page_id, users, &user_count, &page_count);
                if (ret < 0)
                {
                        log_error("query_user_list(page_id=%d) error\n", page_id);
                        return -2;
                }
        }

        if (user_count == 0) // empty list
        {
                selected_index = 0;
        }

        while (!SYS_server_exit)
        {
                if (online_user)
                {
                        ret = user_online_list_draw_items(page_id, online_users, user_count);
                        if (ret < 0)
                        {
                                log_error("user_online_list_draw_items(page_id=%d) error\n", page_id);
                                return -3;
                        }
                }
                else
                {
                        ret = user_list_draw_items(page_id, users, user_count);
                        if (ret < 0)
                        {
                                log_error("user_list_draw_items(page_id=%d) error\n", page_id);
                                return -3;
                        }
                }

                snprintf(page_info_str, sizeof(page_info_str),
                                 "\033[33m[第\033[36m%d\033[33m/\033[36m%d\033[33m页]",
                                 page_id + 1, MAX(page_count, 1));

                show_bottom(page_info_str);
                iflush();

                if (user_online_update(online_user ? "USER_ONLINE" : "USER_LIST") < 0)
                {
                        log_error("user_online_update(%s) error\n",
                                          (online_user ? "USER_ONLINE" : "USER_LIST"));
                }

                ret = user_list_select(page_count, user_count, &page_id, &selected_index);
                switch (ret)
                {
                case EXIT_LIST:
                        return 0;
                case REFRESH_LIST:
                case CHANGE_PAGE:
                        if (online_user)
                        {
                                ret = query_user_online_list(page_id, online_users, &user_count, &page_count);
                                if (ret < 0)
                                {
                                        log_error("query_user_online_list(page_id=%d) error\n", page_id);
                                        return -2;
                                }
                        }
                        else
                        {
                                ret = query_user_list(page_id, users, &user_count, &page_count);
                                if (ret < 0)
                                {
                                        log_error("query_user_list(page_id=%d) error\n", page_id);
                                        return -2;
                                }
                        }

                        if (user_count == 0) // empty list
                        {
                                selected_index = 0;
                        }
                        else if (selected_index >= user_count)
                        {
                                selected_index = user_count - 1;
                        }
                        break;
                case VIEW_USER:
                        user_info_display(online_user ? &(online_users[selected_index].user_info) : &(users[selected_index]));
                        user_list_draw_screen(online_user);
                        break;
                case SHOW_HELP:
                        // Display help information
                        display_file(DATA_READ_HELP, 1);
                        user_list_draw_screen(online_user);
                        break;
                default:
                        log_error("Unknown command %d\n", ret);
                }
        }

        return 0;
}
1	sysadm	1.1	/***************************************************************************
2			user_list_display.c - description
3			-------------------
4			Copyright : (C) 2004-2025 by Leaflet
5			Email : leaflet@leafok.com
6			***************************************************************************/
7
8			/***************************************************************************
9			* *
10			* This program is free software; you can redistribute it and/or modify *
11			* it under the terms of the GNU General Public License as published by *
12			* the Free Software Foundation; either version 3 of the License, or *
13			* (at your option) any later version. *
14			* *
15			***************************************************************************/
16
17			#include "common.h"
18			#include "io.h"
19			#include "log.h"
20			#include "login.h"
21			#include "screen.h"
22			#include "str_process.h"
23			#include "user_list.h"
24			#include "user_priv.h"
25	sysadm	1.12	#include "user_info_display.h"
26	sysadm	1.1	#include "user_list_display.h"
27			#include <string.h>
28			#include <time.h>
29			#include <sys/param.h>
30
31			enum select_cmd_t
32			{
33			EXIT_LIST = 0,
34			VIEW_USER,
35			CHANGE_PAGE,
36	sysadm	1.4	REFRESH_LIST,
37	sysadm	1.1	SHOW_HELP,
38			};
39
40	sysadm	1.3	static int user_list_draw_screen(int online_user)
41	sysadm	1.1	{
42			clearscr();
43	sysadm	1.5	show_top((online_user ? "[线上使用者]" : "[已注册用户]"), BBS_name, "");
44	sysadm	1.1	moveto(2, 0);
45			prints("返回[\033[1;32m←\033[0;37m,\033[1;32mESC\033[0;37m] 选择[\033[1;32m↑\033[0;37m,\033[1;32m↓\033[0;37m] "
46			"查看[\033[1;32m→\033[0;37m,\033[1;32mENTER\033[0;37m] 帮助[\033[1;32mh\033[0;37m]\033[m");
47			moveto(3, 0);
48	sysadm	1.3
49			if (online_user)
50			{
51			prints("\033[44;37m \033[1;37m 编号用户名昵称在线时长空闲最后活动 \033[m");
52			}
53			else
54			{
55			prints("\033[44;37m \033[1;37m 编号用户名昵称上次登陆距今 \033[m");
56			}
57	sysadm	1.1
58			return 0;
59			}
60
61	sysadm	1.3	static int user_list_draw_items(int page_id, USER_INFO *p_users, int user_count)
62	sysadm	1.1	{
63	sysadm	1.3	char str_time_login[LINE_BUFFER_LEN];
64	sysadm	1.1	time_t tm_now;
65			time_t tm_duration;
66			struct tm *p_tm;
67			int i;
68
69			clrline(4, 23);
70
71			time(&tm_now);
72
73			for (i = 0; i < user_count; i++)
74			{
75			tm_duration = tm_now - p_users[i].last_login_dt;
76			p_tm = gmtime(&tm_duration);
77	sysadm	1.3	if (p_tm == NULL)
78	sysadm	1.1	{
79	sysadm	1.3	log_error("Invalid time duration\n");
80			str_time_login[0] = '\0';
81			}
82			else if (p_tm->tm_year > 70)
83			{
84			snprintf(str_time_login, sizeof(str_time_login),
85	sysadm	1.13	"%d年%d天", p_tm->tm_year - 70, p_tm->tm_yday);
86	sysadm	1.1	}
87	sysadm	1.3	else if (p_tm->tm_yday > 0)
88	sysadm	1.1	{
89	sysadm	1.3	snprintf(str_time_login, sizeof(str_time_login),
90	sysadm	1.1	"%d天", p_tm->tm_yday);
91			}
92			else if (p_tm->tm_hour > 0)
93			{
94	sysadm	1.3	snprintf(str_time_login, sizeof(str_time_login),
95	sysadm	1.13	"%d:%.2d", p_tm->tm_hour, p_tm->tm_min);
96	sysadm	1.1	}
97			else
98			{
99	sysadm	1.3	snprintf(str_time_login, sizeof(str_time_login),
100	sysadm	1.13	"%d\'%.2d\"", p_tm->tm_min, p_tm->tm_sec);
101	sysadm	1.1	}
102
103			moveto(4 + i, 1);
104
105	sysadm	1.3	prints(" %6d %s%s %s%s %s",
106	sysadm	1.4	p_users[i].id + 1,
107	sysadm	1.1	p_users[i].username,
108			BBS_username_max_len - str_length(p_users[i].username, 1),
109			"",
110			p_users[i].nickname,
111			BBS_nickname_max_len / 2 - str_length(p_users[i].nickname, 1),
112			"",
113	sysadm	1.3	str_time_login);
114			}
115
116			return 0;
117			}
118
119			static int user_online_list_draw_items(int page_id, USER_ONLINE_INFO *p_users, int user_count)
120			{
121			char str_time_login[LINE_BUFFER_LEN];
122			char str_time_idle[LINE_BUFFER_LEN];
123			const char *p_action_title;
124			time_t tm_now;
125			time_t tm_duration;
126			struct tm *p_tm;
127			int i;
128
129			clrline(4, 23);
130
131			time(&tm_now);
132
133			for (i = 0; i < user_count; i++)
134			{
135			tm_duration = tm_now - p_users[i].login_tm;
136			p_tm = gmtime(&tm_duration);
137			if (p_tm == NULL)
138			{
139			log_error("Invalid time duration\n");
140			str_time_login[0] = '\0';
141			}
142			else if (p_tm->tm_yday > 0)
143			{
144			snprintf(str_time_login, sizeof(str_time_login),
145	sysadm	1.13	"%dd%dh", p_tm->tm_yday, p_tm->tm_hour);
146	sysadm	1.3	}
147			else if (p_tm->tm_hour > 0)
148			{
149			snprintf(str_time_login, sizeof(str_time_login),
150	sysadm	1.13	"%d:%.2d", p_tm->tm_hour, p_tm->tm_min);
151	sysadm	1.3	}
152			else
153			{
154			snprintf(str_time_login, sizeof(str_time_login),
155	sysadm	1.13	"%d\'%.2d\"", p_tm->tm_min, p_tm->tm_sec);
156	sysadm	1.3	}
157
158			tm_duration = tm_now - p_users[i].last_tm;
159			p_tm = gmtime(&tm_duration);
160			if (p_tm == NULL)
161			{
162			log_error("Invalid time duration\n");
163			str_time_idle[0] = '\0';
164			}
165			else if (p_tm->tm_min > 0)
166			{
167			snprintf(str_time_idle, sizeof(str_time_idle),
168			"%d\'%d\"", p_tm->tm_min, p_tm->tm_sec);
169			}
170			else
171			{
172			snprintf(str_time_idle, sizeof(str_time_idle),
173			"%d\"", p_tm->tm_sec);
174			}
175
176			p_action_title = (p_users[i].current_action_title != NULL
177			? p_users[i].current_action_title
178			: p_users[i].current_action);
179
180			moveto(4 + i, 1);
181
182			prints(" %6d %s%s %s%s %s%s %s%s %s",
183	sysadm	1.4	p_users[i].id + 1,
184	sysadm	1.3	p_users[i].user_info.username,
185			BBS_username_max_len - str_length(p_users[i].user_info.username, 1),
186			"",
187			p_users[i].user_info.nickname,
188			BBS_nickname_max_len / 2 - str_length(p_users[i].user_info.nickname, 1),
189			"",
190			str_time_login,
191			8 - str_length(str_time_login, 1),
192			"",
193			str_time_idle,
194			6 - str_length(str_time_idle, 1),
195			"",
196			p_action_title);
197	sysadm	1.1	}
198
199			return 0;
200			}
201
202			static enum select_cmd_t user_list_select(int total_page, int item_count, int p_page_id, int p_selected_index)
203			{
204			int old_page_id = *p_page_id;
205			int old_selected_index = *p_selected_index;
206			int ch;
207
208			if (item_count > 0 && *p_selected_index >= 0)
209			{
210			moveto(4 + *p_selected_index, 1);
211			outc('>');
212			iflush();
213			}
214
215			while (!SYS_server_exit)
216			{
217			ch = igetch(100);
218
219			if (ch != KEY_NULL && ch != KEY_TIMEOUT)
220			{
221			BBS_last_access_tm = time(NULL);
222			}
223
224			switch (ch)
225			{
226			case KEY_NULL: // broken pipe
227			log_error("KEY_NULL\n");
228			case KEY_ESC:
229			case KEY_LEFT:
230			return EXIT_LIST; // exit list
231			case KEY_TIMEOUT:
232			if (time(NULL) - BBS_last_access_tm >= MAX_DELAY_TIME)
233			{
234			log_error("User input timeout\n");
235			return EXIT_LIST; // exit list
236			}
237			continue;
238			case CR:
239			case KEY_RIGHT:
240			if (item_count > 0)
241			{
242			return VIEW_USER;
243			}
244			break;
245			case KEY_HOME:
246			*p_page_id = 0;
247			case 'P':
248			case KEY_PGUP:
249			*p_selected_index = 0;
250			case 'k':
251			case KEY_UP:
252			if (*p_selected_index <= 0)
253			{
254			if (*p_page_id > 0)
255			{
256			(*p_page_id)--;
257			*p_selected_index = BBS_user_limit_per_page - 1;
258			}
259			else if (ch == KEY_UP \|\| ch == 'k') // Rotate to the tail of list
260			{
261			if (total_page > 0)
262			{
263			*p_page_id = total_page - 1;
264			}
265			if (item_count > 0)
266			{
267			*p_selected_index = item_count - 1;
268			}
269			}
270			}
271			else
272			{
273			(*p_selected_index)--;
274			}
275			break;
276			case '$':
277			case KEY_END:
278			if (total_page > 0)
279			{
280			*p_page_id = total_page - 1;
281			}
282			case 'N':
283			case KEY_PGDN:
284			if (item_count > 0)
285			{
286			*p_selected_index = item_count - 1;
287			}
288			case 'j':
289			case KEY_DOWN:
290			if (*p_selected_index + 1 >= item_count) // next page
291			{
292			if (*p_page_id + 1 < total_page)
293			{
294			(*p_page_id)++;
295			*p_selected_index = 0;
296			}
297			else if (ch == KEY_DOWN \|\| ch == 'j') // Rotate to the head of list
298			{
299			*p_page_id = 0;
300			*p_selected_index = 0;
301			}
302			}
303			else
304			{
305			(*p_selected_index)++;
306			}
307			break;
308	sysadm	1.4	case KEY_F5:
309			return REFRESH_LIST;
310	sysadm	1.1	case 'h':
311			return SHOW_HELP;
312			default:
313			break;
314			}
315
316			if (old_page_id != *p_page_id)
317			{
318			return CHANGE_PAGE;
319			}
320
321			if (item_count > 0 && old_selected_index != *p_selected_index)
322			{
323			if (old_selected_index >= 0)
324			{
325			moveto(4 + old_selected_index, 1);
326			outc(' ');
327			}
328			if (*p_selected_index >= 0)
329			{
330			moveto(4 + *p_selected_index, 1);
331			outc('>');
332			}
333			iflush();
334
335			old_selected_index = *p_selected_index;
336			}
337			}
338
339			return EXIT_LIST;
340			}
341
342	sysadm	1.3	int user_list_display(int online_user)
343	sysadm	1.1	{
344			char page_info_str[LINE_BUFFER_LEN];
345			USER_INFO users[BBS_user_limit_per_page];
346	sysadm	1.3	USER_ONLINE_INFO online_users[BBS_user_limit_per_page];
347	sysadm	1.7	int user_count = 0;
348			int page_count = 0;
349	sysadm	1.1	int page_id = 0;
350			int selected_index = 0;
351	sysadm	1.7	int ret = 0;
352	sysadm	1.1
353	sysadm	1.3	user_list_draw_screen(online_user);
354	sysadm	1.1
355	sysadm	1.3	if (online_user)
356			{
357			ret = query_user_online_list(page_id, online_users, &user_count, &page_count);
358			if (ret < 0)
359			{
360			log_error("query_user_online_list(page_id=%d) error\n", page_id);
361			return -2;
362			}
363			}
364			else
365	sysadm	1.1	{
366	sysadm	1.3	ret = query_user_list(page_id, users, &user_count, &page_count);
367			if (ret < 0)
368			{
369			log_error("query_user_list(page_id=%d) error\n", page_id);
370			return -2;
371			}
372	sysadm	1.1	}
373
374			if (user_count == 0) // empty list
375			{
376			selected_index = 0;
377			}
378
379			while (!SYS_server_exit)
380			{
381	sysadm	1.3	if (online_user)
382			{
383			ret = user_online_list_draw_items(page_id, online_users, user_count);
384			if (ret < 0)
385			{
386			log_error("user_online_list_draw_items(page_id=%d) error\n", page_id);
387			return -3;
388			}
389			}
390			else
391	sysadm	1.1	{
392	sysadm	1.3	ret = user_list_draw_items(page_id, users, user_count);
393			if (ret < 0)
394			{
395			log_error("user_list_draw_items(page_id=%d) error\n", page_id);
396			return -3;
397			}
398	sysadm	1.1	}
399
400			snprintf(page_info_str, sizeof(page_info_str),
401			"\033[33m[第\033[36m%d\033[33m/\033[36m%d\033[33m页]",
402			page_id + 1, MAX(page_count, 1));
403
404			show_bottom(page_info_str);
405			iflush();
406
407	sysadm	1.3	if (user_online_update(online_user ? "USER_ONLINE" : "USER_LIST") < 0)
408	sysadm	1.1	{
409	sysadm	1.3	log_error("user_online_update(%s) error\n",
410			(online_user ? "USER_ONLINE" : "USER_LIST"));
411	sysadm	1.1	}
412
413			ret = user_list_select(page_count, user_count, &page_id, &selected_index);
414			switch (ret)
415			{
416			case EXIT_LIST:
417			return 0;
418	sysadm	1.4	case REFRESH_LIST:
419	sysadm	1.1	case CHANGE_PAGE:
420	sysadm	1.4	if (online_user)
421			{
422			ret = query_user_online_list(page_id, online_users, &user_count, &page_count);
423			if (ret < 0)
424			{
425			log_error("query_user_online_list(page_id=%d) error\n", page_id);
426			return -2;
427			}
428			}
429			else
430	sysadm	1.1	{
431	sysadm	1.4	ret = query_user_list(page_id, users, &user_count, &page_count);
432			if (ret < 0)
433			{
434			log_error("query_user_list(page_id=%d) error\n", page_id);
435			return -2;
436			}
437	sysadm	1.1	}
438
439			if (user_count == 0) // empty list
440			{
441			selected_index = 0;
442			}
443			else if (selected_index >= user_count)
444			{
445			selected_index = user_count - 1;
446			}
447			break;
448			case VIEW_USER:
449	sysadm	1.12	user_info_display(online_user ? &(online_users[selected_index].user_info) : &(users[selected_index]));
450	sysadm	1.3	user_list_draw_screen(online_user);
451	sysadm	1.1	break;
452			case SHOW_HELP:
453			// Display help information
454			display_file(DATA_READ_HELP, 1);
455	sysadm	1.3	user_list_draw_screen(online_user);
456	sysadm	1.1	break;
457			default:
458			log_error("Unknown command %d\n", ret);
459			}
460			}
461
462			return 0;
463			}
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