lbbs/src/common.c

/***************************************************************************
                                                  common.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 "log.h"
#include "menu.h"
#include <signal.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>

// File loader
const char *data_files_load_startup[] = {
        DATA_WELCOME,
        DATA_REGISTER,
        DATA_GOODBYE,
        DATA_LICENSE,
        DATA_COPYRIGHT,
        DATA_LOGIN_ERROR,
        DATA_ACTIVE_BOARD,
        DATA_READ_HELP,
        VAR_BBS_TOP};
int data_files_load_startup_count = 9; // Count of data_files_load_startup[]

// Global declaration for sockets
int socket_server[2];
int socket_client;
char hostaddr_client[IP_ADDR_LEN];
int port_client;

// SSHv2
int SSH_v2 = 0;
ssh_bind sshbind;
ssh_session SSH_session;
ssh_channel SSH_channel;

// Global declaration for system
volatile int SYS_server_exit = 0;
volatile int SYS_child_process_count = 0;
volatile int SYS_child_exit = 0;
volatile int SYS_conf_reload = 0;

static const char *weekday[] = {
        "天", "一", "二", "三", "四", "五", "六"};

// Common function
const char *get_time_str(char *s, size_t len)
{
        time_t curtime;
        struct tm local_tm;

        time(&curtime);
        localtime_r(&curtime, &local_tm);
        size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm);

        if (j == 0 || j + strlen(weekday[local_tm.tm_wday]) + 1 > len)
        {
                return NULL;
        }

        strncat(s, weekday[local_tm.tm_wday], len - 1 - j);

        return s;
}

void sig_hup_handler(int i)
{
        SYS_conf_reload = 1;
}

void sig_term_handler(int i)
{
        SYS_server_exit = 1;
}

void sig_chld_handler(int i)
{
        SYS_child_exit = 1;
}

const char *ip_mask(char *s, int level, char mask)
{
        char *p = s;

        if (level <= 0)
        {
                return s;
        }
        if (level > 4)
        {
                level = 4;
        }

        for (int i = 0; i < 4 - level; i++)
        {
                p = strchr(p, '.');
                if (p == NULL)
                {
                        return s;
                }
                p++;
        }

        for (int i = 0; i < level; i++)
        {
                *p = mask;
                p++;
                if (i < level - 1)
                {
                        *p = '.';
                        p++;
                }
        }
        *p = '\0';

        return s;
}
1	sysadm	1.1	/***************************************************************************
2	sysadm	1.9	common.c - description
3			-------------------
4	sysadm	1.15	Copyright : (C) 2004-2025 by Leaflet
5			Email : leaflet@leafok.com
6	sysadm	1.1	***************************************************************************/
7
8			/***************************************************************************
9			* *
10			* This program is free software; you can redistribute it and/or modify *
11			* it under the terms of the GNU General Public License as published by *
12	sysadm	1.15	* the Free Software Foundation; either version 3 of the License, or *
13	sysadm	1.1	* (at your option) any later version. *
14			* *
15			***************************************************************************/
16
17	sysadm	1.11	#include "common.h"
18			#include "log.h"
19	sysadm	1.6	#include "menu.h"
20	sysadm	1.34	#include <signal.h>
21	sysadm	1.11	#include <string.h>
22	sysadm	1.3	#include <time.h>
23	sysadm	1.7	#include <sys/types.h>
24	sysadm	1.3
25	sysadm	1.21	// File loader
26			const char *data_files_load_startup[] = {
27			DATA_WELCOME,
28			DATA_REGISTER,
29			DATA_GOODBYE,
30			DATA_LICENSE,
31			DATA_COPYRIGHT,
32			DATA_LOGIN_ERROR,
33			DATA_ACTIVE_BOARD,
34			DATA_READ_HELP,
35	sysadm	1.22	VAR_BBS_TOP};
36	sysadm	1.21	int data_files_load_startup_count = 9; // Count of data_files_load_startup[]
37
38	sysadm	1.9	// Global declaration for sockets
39	sysadm	1.29	int socket_server[2];
40	sysadm	1.1	int socket_client;
41	sysadm	1.29	char hostaddr_client[IP_ADDR_LEN];
42	sysadm	1.1	int port_client;
43
44	sysadm	1.28	// SSHv2
45			int SSH_v2 = 0;
46	sysadm	1.29	ssh_bind sshbind;
47	sysadm	1.28	ssh_session SSH_session;
48			ssh_channel SSH_channel;
49
50	sysadm	1.9	// Global declaration for system
51	sysadm	1.17	volatile int SYS_server_exit = 0;
52			volatile int SYS_child_process_count = 0;
53	sysadm	1.18	volatile int SYS_child_exit = 0;
54	sysadm	1.26	volatile int SYS_conf_reload = 0;
55	sysadm	1.7
56	sysadm	1.22	static const char *weekday[] = {
57	sysadm	1.36	"天", "一", "二", "三", "四", "五", "六"};
58	sysadm	1.22
59	sysadm	1.9	// Common function
60	sysadm	1.14	const char get_time_str(char s, size_t len)
61	sysadm	1.3	{
62	sysadm	1.23	time_t curtime;
63			struct tm local_tm;
64	sysadm	1.9
65	sysadm	1.23	time(&curtime);
66			localtime_r(&curtime, &local_tm);
67	sysadm	1.36	size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm);
68	sysadm	1.14
69	sysadm	1.23	if (j == 0 \|\| j + strlen(weekday[local_tm.tm_wday]) + 1 > len)
70	sysadm	1.14	{
71			return NULL;
72			}
73	sysadm	1.9
74	sysadm	1.23	strncat(s, weekday[local_tm.tm_wday], len - 1 - j);
75	sysadm	1.5
76	sysadm	1.14	return s;
77	sysadm	1.3	}
78	sysadm	1.6
79	sysadm	1.17	void sig_hup_handler(int i)
80	sysadm	1.6	{
81	sysadm	1.26	SYS_conf_reload = 1;
82	sysadm	1.7	}
83
84	sysadm	1.17	void sig_term_handler(int i)
85	sysadm	1.7	{
86	sysadm	1.17	SYS_server_exit = 1;
87	sysadm	1.7	}
88
89	sysadm	1.17	void sig_chld_handler(int i)
90	sysadm	1.7	{
91	sysadm	1.18	SYS_child_exit = 1;
92	sysadm	1.6	}
93	sysadm	1.16
94	sysadm	1.21	const char ip_mask(char s, int level, char mask)
95	sysadm	1.16	{
96	sysadm	1.21	char *p = s;
97	sysadm	1.16
98			if (level <= 0)
99			{
100			return s;
101			}
102			if (level > 4)
103			{
104			level = 4;
105			}
106
107			for (int i = 0; i < 4 - level; i++)
108			{
109			p = strchr(p, '.');
110			if (p == NULL)
111			{
112			return s;
113			}
114			p++;
115			}
116
117			for (int i = 0; i < level; i++)
118			{
119			*p = mask;
120			p++;
121			if (i < level - 1)
122			{
123			*p = '.';
124			p++;
125			}
126			}
127			*p = '\0';
128
129			return s;
130			}
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