lbbs/src/init.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * init
 *   - initializer of server daemon
 *
 * Copyright (C) 2004-2025 by Leaflet <leaflet@leafok.com>
 */

#include "bbs.h"
#include "common.h"
#include "database.h"
#include "init.h"
#include "io.h"
#include "log.h"
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>

#define CONF_DELIM_WITH_SPACE " \t\r\n"

int init_daemon(void)
{
        int pid;

        pid = fork();

        if (pid > 0) // Parent process
        {
                _exit(0);
        }
        else if (pid < 0) // error
        {
                _exit(pid);
        }

        // Child process
        setsid();

        pid = fork();

        if (pid > 0) // Parent process
        {
                _exit(0);
        }
        else if (pid < 0) // error
        {
                _exit(pid);
        }

        // Child process
        umask(022);

        return 0;
}

int load_conf(const char *conf_file)
{
        char buffer[LINE_BUFFER_LEN];
        char *saveptr = NULL;
        char *p, *q, *r;
        char *y, *m, *d;
        int v;
        FILE *fin;

        // Load configuration
        if ((fin = fopen(conf_file, "r")) == NULL)
        {
                log_error("Open %s failed", conf_file);
                return -1;
        }

        while (fgets(buffer, sizeof(buffer), fin) != NULL)
        {
                p = strtok_r(buffer, CONF_DELIM_WITH_SPACE, &saveptr);
                if (p == NULL) // Blank line
                {
                        continue;
                }

                if (*p == '#' || *p == '\r' || *p == '\n') // Comment or blank line
                {
                        continue;
                }

                q = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
                if (q == NULL) // Empty value
                {
                        log_error("Skip empty value of config item: %s\n", p);
                        continue;
                }

                // Check syntax
                r = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
                if (r != NULL && r[0] != '#')
                {
                        log_error("Skip config line with extra value %s = %s %s\n", p, q, r);
                        continue;
                }

                if (strcasecmp(p, "bbs_id") == 0)
                {
                        strncpy(BBS_id, q, sizeof(BBS_id) - 1);
                        BBS_id[sizeof(BBS_id) - 1] = '\0';
                }
                else if (strcasecmp(p, "bbs_name") == 0)
                {
                        strncpy(BBS_name, q, sizeof(BBS_name) - 1);
                        BBS_name[sizeof(BBS_name) - 1] = '\0';
                }
                else if (strcasecmp(p, "bbs_server") == 0)
                {
                        strncpy(BBS_server, q, sizeof(BBS_server) - 1);
                        BBS_server[sizeof(BBS_server) - 1] = '\0';
                }
                else if (strcasecmp(p, "bbs_address") == 0)
                {
                        strncpy(BBS_address, q, sizeof(BBS_address) - 1);
                        BBS_address[sizeof(BBS_address) - 1] = '\0';
                }
                else if (strcasecmp(p, "bbs_port") == 0)
                {
                        BBS_port[0] = (in_port_t)atoi(q);
                }
                else if (strcasecmp(p, "bbs_ssh_port") == 0)
                {
                        BBS_port[1] = (in_port_t)atoi(q);
                }
                else if (strcasecmp(p, "bbs_max_client") == 0)
                {
                        BBS_max_client = atoi(q);
                        if (BBS_max_client <= 0 || BBS_max_client > MAX_CLIENT_LIMIT)
                        {
                                log_error("Ignore config bbs_max_client with incorrect value %d\n", BBS_max_client);
                                BBS_max_client = MAX_CLIENT_LIMIT;
                        }
                }
                else if (strcasecmp(p, "bbs_max_client_per_ip") == 0)
                {
                        BBS_max_client_per_ip = atoi(q);
                        if (BBS_max_client_per_ip <= 0 || BBS_max_client_per_ip > MAX_CLIENT_PER_IP_LIMIT)
                        {
                                log_error("Ignore config bbs_max_client with incorrect value %d\n", BBS_max_client_per_ip);
                                BBS_max_client_per_ip = MAX_CLIENT_PER_IP_LIMIT;
                        }
                }
                else if (strcasecmp(p, "bbs_start_dt") == 0)
                {
                        y = strtok_r(q, "-", &saveptr);
                        m = strtok_r(NULL, "-", &saveptr);
                        d = strtok_r(NULL, "-", &saveptr);

                        if (y == NULL || m == NULL || d == NULL)
                        {
                                log_error("Ignore config bbs_start_dt with incorrect value\n");
                                continue;
                        }
                        snprintf(BBS_start_dt, sizeof(BBS_start_dt), "%4s年%2s月%2s日", y, m, d);
                }
                else if (strcasecmp(p, "bbs_sys_id") == 0)
                {
                        v = atoi(q);
                        if (v <= 0)
                        {
                                log_error("Ignore config bbs_sys_id with incorrect value %d\n", v);
                                continue;
                        }
                        BBS_sys_id = v;
                }
                else if (strcasecmp(p, "db_host") == 0)
                {
                        strncpy(DB_host, q, sizeof(DB_host) - 1);
                        DB_host[sizeof(DB_host) - 1] = '\0';
                }
                else if (strcasecmp(p, "db_username") == 0)
                {
                        strncpy(DB_username, q, sizeof(DB_username) - 1);
                        DB_username[sizeof(DB_username) - 1] = '\0';
                }
                else if (strcasecmp(p, "db_password") == 0)
                {
                        strncpy(DB_password, q, sizeof(DB_password) - 1);
                        DB_password[sizeof(DB_password) - 1] = '\0';
                }
                else if (strcasecmp(p, "db_database") == 0)
                {
                        strncpy(DB_database, q, sizeof(DB_database) - 1);
                        DB_database[sizeof(DB_database) - 1] = '\0';
                }
                else if (strcasecmp(p, "db_timezone") == 0)
                {
                        strncpy(DB_timezone, q, sizeof(DB_timezone) - 1);
                        DB_timezone[sizeof(DB_timezone) - 1] = '\0';
                }
                else
                {
                        log_error("Unknown config %s = %s\n", p, q);
                }
        }

        fclose(fin);

        return 0;
}
1	sysadm	1.32	/* SPDX-License-Identifier: GPL-3.0-or-later */
2			/*
3			* init
4			* - initializer of server daemon
5			*
6			* Copyright (C) 2004-2025 by Leaflet <leaflet@leafok.com>
7			*/
8	sysadm	1.1
9	sysadm	1.4	#include "bbs.h"
10	sysadm	1.1	#include "common.h"
11	sysadm	1.28	#include "database.h"
12			#include "init.h"
13			#include "io.h"
14	sysadm	1.13	#include "log.h"
15	sysadm	1.28	#include <signal.h>
16			#include <stdlib.h>
17	sysadm	1.13	#include <string.h>
18	sysadm	1.25	#include <unistd.h>
19	sysadm	1.6	#include <sys/param.h>
20	sysadm	1.28	#include <sys/stat.h>
21	sysadm	1.6	#include <sys/types.h>
22	sysadm	1.1
23	sysadm	1.22	#define CONF_DELIM_WITH_SPACE " \t\r\n"
24
25	sysadm	1.19	int init_daemon(void)
26	sysadm	1.1	{
27	sysadm	1.11	int pid;
28	sysadm	1.1
29	sysadm	1.15	pid = fork();
30
31	sysadm	1.20	if (pid > 0) // Parent process
32	sysadm	1.15	{
33	sysadm	1.20	_exit(0);
34			}
35			else if (pid < 0) // error
36			{
37			_exit(pid);
38	sysadm	1.15	}
39	sysadm	1.1
40	sysadm	1.15	// Child process
41	sysadm	1.11	setsid();
42	sysadm	1.1
43	sysadm	1.15	pid = fork();
44
45	sysadm	1.20	if (pid > 0) // Parent process
46			{
47			_exit(0);
48			}
49			else if (pid < 0) // error
50	sysadm	1.15	{
51	sysadm	1.20	_exit(pid);
52	sysadm	1.15	}
53	sysadm	1.1
54	sysadm	1.15	// Child process
55			umask(022);
56	sysadm	1.1
57	sysadm	1.19	return 0;
58	sysadm	1.1	}
59	sysadm	1.4
60	sysadm	1.11	int load_conf(const char *conf_file)
61	sysadm	1.4	{
62	sysadm	1.22	char buffer[LINE_BUFFER_LEN];
63			char *saveptr = NULL;
64			char p, q, *r;
65			char y, m, *d;
66	sysadm	1.30	int v;
67	sysadm	1.22	FILE *fin;
68	sysadm	1.4
69	sysadm	1.11	// Load configuration
70			if ((fin = fopen(conf_file, "r")) == NULL)
71			{
72			log_error("Open %s failed", conf_file);
73			return -1;
74			}
75
76	sysadm	1.22	while (fgets(buffer, sizeof(buffer), fin) != NULL)
77	sysadm	1.11	{
78	sysadm	1.22	p = strtok_r(buffer, CONF_DELIM_WITH_SPACE, &saveptr);
79			if (p == NULL) // Blank line
80			{
81			continue;
82			}
83
84			if (p == '#' \|\| p == '\r' \|\| *p == '\n') // Comment or blank line
85			{
86			continue;
87			}
88
89			q = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
90			if (q == NULL) // Empty value
91			{
92			log_error("Skip empty value of config item: %s\n", p);
93			continue;
94			}
95
96			// Check syntax
97			r = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
98			if (r != NULL && r[0] != '#')
99	sysadm	1.11	{
100	sysadm	1.22	log_error("Skip config line with extra value %s = %s %s\n", p, q, r);
101	sysadm	1.11	continue;
102			}
103	sysadm	1.22
104			if (strcasecmp(p, "bbs_id") == 0)
105			{
106			strncpy(BBS_id, q, sizeof(BBS_id) - 1);
107			BBS_id[sizeof(BBS_id) - 1] = '\0';
108			}
109			else if (strcasecmp(p, "bbs_name") == 0)
110			{
111			strncpy(BBS_name, q, sizeof(BBS_name) - 1);
112			BBS_name[sizeof(BBS_name) - 1] = '\0';
113			}
114			else if (strcasecmp(p, "bbs_server") == 0)
115	sysadm	1.11	{
116	sysadm	1.22	strncpy(BBS_server, q, sizeof(BBS_server) - 1);
117			BBS_server[sizeof(BBS_server) - 1] = '\0';
118	sysadm	1.11	}
119	sysadm	1.22	else if (strcasecmp(p, "bbs_address") == 0)
120	sysadm	1.11	{
121	sysadm	1.22	strncpy(BBS_address, q, sizeof(BBS_address) - 1);
122			BBS_address[sizeof(BBS_address) - 1] = '\0';
123	sysadm	1.11	}
124	sysadm	1.22	else if (strcasecmp(p, "bbs_port") == 0)
125	sysadm	1.11	{
126	sysadm	1.24	BBS_port[0] = (in_port_t)atoi(q);
127	sysadm	1.11	}
128	sysadm	1.24	else if (strcasecmp(p, "bbs_ssh_port") == 0)
129	sysadm	1.11	{
130	sysadm	1.24	BBS_port[1] = (in_port_t)atoi(q);
131	sysadm	1.11	}
132	sysadm	1.22	else if (strcasecmp(p, "bbs_max_client") == 0)
133	sysadm	1.11	{
134	sysadm	1.22	BBS_max_client = atoi(q);
135			if (BBS_max_client <= 0 \|\| BBS_max_client > MAX_CLIENT_LIMIT)
136			{
137			log_error("Ignore config bbs_max_client with incorrect value %d\n", BBS_max_client);
138			BBS_max_client = MAX_CLIENT_LIMIT;
139			}
140	sysadm	1.11	}
141	sysadm	1.22	else if (strcasecmp(p, "bbs_max_client_per_ip") == 0)
142	sysadm	1.11	{
143	sysadm	1.22	BBS_max_client_per_ip = atoi(q);
144			if (BBS_max_client_per_ip <= 0 \|\| BBS_max_client_per_ip > MAX_CLIENT_PER_IP_LIMIT)
145	sysadm	1.21	{
146	sysadm	1.22	log_error("Ignore config bbs_max_client with incorrect value %d\n", BBS_max_client_per_ip);
147			BBS_max_client_per_ip = MAX_CLIENT_PER_IP_LIMIT;
148	sysadm	1.21	}
149			}
150	sysadm	1.22	else if (strcasecmp(p, "bbs_start_dt") == 0)
151	sysadm	1.11	{
152	sysadm	1.22	y = strtok_r(q, "-", &saveptr);
153			m = strtok_r(NULL, "-", &saveptr);
154			d = strtok_r(NULL, "-", &saveptr);
155
156			if (y == NULL \|\| m == NULL \|\| d == NULL)
157			{
158			log_error("Ignore config bbs_start_dt with incorrect value\n");
159			continue;
160			}
161	sysadm	1.29	snprintf(BBS_start_dt, sizeof(BBS_start_dt), "%4s年%2s月%2s日", y, m, d);
162	sysadm	1.11	}
163	sysadm	1.30	else if (strcasecmp(p, "bbs_sys_id") == 0)
164			{
165			v = atoi(q);
166	sysadm	1.31	if (v <= 0)
167	sysadm	1.30	{
168			log_error("Ignore config bbs_sys_id with incorrect value %d\n", v);
169			continue;
170			}
171			BBS_sys_id = v;
172			}
173	sysadm	1.22	else if (strcasecmp(p, "db_host") == 0)
174	sysadm	1.11	{
175	sysadm	1.22	strncpy(DB_host, q, sizeof(DB_host) - 1);
176			DB_host[sizeof(DB_host) - 1] = '\0';
177	sysadm	1.11	}
178	sysadm	1.22	else if (strcasecmp(p, "db_username") == 0)
179	sysadm	1.11	{
180	sysadm	1.22	strncpy(DB_username, q, sizeof(DB_username) - 1);
181			DB_username[sizeof(DB_username) - 1] = '\0';
182	sysadm	1.11	}
183	sysadm	1.22	else if (strcasecmp(p, "db_password") == 0)
184	sysadm	1.11	{
185	sysadm	1.22	strncpy(DB_password, q, sizeof(DB_password) - 1);
186			DB_password[sizeof(DB_password) - 1] = '\0';
187	sysadm	1.11	}
188	sysadm	1.22	else if (strcasecmp(p, "db_database") == 0)
189	sysadm	1.11	{
190	sysadm	1.22	strncpy(DB_database, q, sizeof(DB_database) - 1);
191			DB_database[sizeof(DB_database) - 1] = '\0';
192	sysadm	1.11	}
193	sysadm	1.22	else if (strcasecmp(p, "db_timezone") == 0)
194	sysadm	1.11	{
195	sysadm	1.22	strncpy(DB_timezone, q, sizeof(DB_timezone) - 1);
196			DB_timezone[sizeof(DB_timezone) - 1] = '\0';
197	sysadm	1.11	}
198	sysadm	1.22	else
199	sysadm	1.12	{
200	sysadm	1.22	log_error("Unknown config %s = %s\n", p, q);
201	sysadm	1.12	}
202	sysadm	1.5	}
203	sysadm	1.4
204	sysadm	1.11	fclose(fin);
205	sysadm	1.9
206	sysadm	1.11	return 0;
207	sysadm	1.4	}
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