lbbs/src/init.c

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

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#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>

static const char 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", 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", 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", 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", 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");
                                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", 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", 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	sysadm	1.33	* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7	sysadm	1.32	*/
8	sysadm	1.1
9	sysadm	1.35	#ifdef HAVE_CONFIG_H
10			#include "config.h"
11			#endif
12
13	sysadm	1.4	#include "bbs.h"
14	sysadm	1.1	#include "common.h"
15	sysadm	1.28	#include "database.h"
16			#include "init.h"
17			#include "io.h"
18	sysadm	1.13	#include "log.h"
19	sysadm	1.28	#include <signal.h>
20			#include <stdlib.h>
21	sysadm	1.13	#include <string.h>
22	sysadm	1.25	#include <unistd.h>
23	sysadm	1.6	#include <sys/param.h>
24	sysadm	1.28	#include <sys/stat.h>
25	sysadm	1.6	#include <sys/types.h>
26	sysadm	1.1
27	sysadm	1.34	static const char CONF_DELIM_WITH_SPACE[] = " \t\r\n";
28	sysadm	1.22
29	sysadm	1.19	int init_daemon(void)
30	sysadm	1.1	{
31	sysadm	1.11	int pid;
32	sysadm	1.1
33	sysadm	1.15	pid = fork();
34
35	sysadm	1.20	if (pid > 0) // Parent process
36	sysadm	1.15	{
37	sysadm	1.20	_exit(0);
38			}
39			else if (pid < 0) // error
40			{
41			_exit(pid);
42	sysadm	1.15	}
43	sysadm	1.1
44	sysadm	1.15	// Child process
45	sysadm	1.11	setsid();
46	sysadm	1.1
47	sysadm	1.15	pid = fork();
48
49	sysadm	1.20	if (pid > 0) // Parent process
50			{
51			_exit(0);
52			}
53			else if (pid < 0) // error
54	sysadm	1.15	{
55	sysadm	1.20	_exit(pid);
56	sysadm	1.15	}
57	sysadm	1.1
58	sysadm	1.15	// Child process
59			umask(022);
60	sysadm	1.1
61	sysadm	1.19	return 0;
62	sysadm	1.1	}
63	sysadm	1.4
64	sysadm	1.11	int load_conf(const char *conf_file)
65	sysadm	1.4	{
66	sysadm	1.22	char buffer[LINE_BUFFER_LEN];
67			char *saveptr = NULL;
68			char p, q, *r;
69			char y, m, *d;
70	sysadm	1.30	int v;
71	sysadm	1.22	FILE *fin;
72	sysadm	1.4
73	sysadm	1.11	// Load configuration
74			if ((fin = fopen(conf_file, "r")) == NULL)
75			{
76			log_error("Open %s failed", conf_file);
77			return -1;
78			}
79
80	sysadm	1.22	while (fgets(buffer, sizeof(buffer), fin) != NULL)
81	sysadm	1.11	{
82	sysadm	1.22	p = strtok_r(buffer, CONF_DELIM_WITH_SPACE, &saveptr);
83			if (p == NULL) // Blank line
84			{
85			continue;
86			}
87
88			if (p == '#' \|\| p == '\r' \|\| *p == '\n') // Comment or blank line
89			{
90			continue;
91			}
92
93			q = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
94			if (q == NULL) // Empty value
95			{
96	sysadm	1.36	log_error("Skip empty value of config item: %s", p);
97	sysadm	1.22	continue;
98			}
99
100			// Check syntax
101			r = strtok_r(NULL, CONF_DELIM_WITH_SPACE, &saveptr);
102			if (r != NULL && r[0] != '#')
103	sysadm	1.11	{
104	sysadm	1.36	log_error("Skip config line with extra value %s = %s %s", p, q, r);
105	sysadm	1.11	continue;
106			}
107	sysadm	1.22
108			if (strcasecmp(p, "bbs_id") == 0)
109			{
110			strncpy(BBS_id, q, sizeof(BBS_id) - 1);
111			BBS_id[sizeof(BBS_id) - 1] = '\0';
112			}
113			else if (strcasecmp(p, "bbs_name") == 0)
114			{
115			strncpy(BBS_name, q, sizeof(BBS_name) - 1);
116			BBS_name[sizeof(BBS_name) - 1] = '\0';
117			}
118			else if (strcasecmp(p, "bbs_server") == 0)
119	sysadm	1.11	{
120	sysadm	1.22	strncpy(BBS_server, q, sizeof(BBS_server) - 1);
121			BBS_server[sizeof(BBS_server) - 1] = '\0';
122	sysadm	1.11	}
123	sysadm	1.22	else if (strcasecmp(p, "bbs_address") == 0)
124	sysadm	1.11	{
125	sysadm	1.22	strncpy(BBS_address, q, sizeof(BBS_address) - 1);
126			BBS_address[sizeof(BBS_address) - 1] = '\0';
127	sysadm	1.11	}
128	sysadm	1.22	else if (strcasecmp(p, "bbs_port") == 0)
129	sysadm	1.11	{
130	sysadm	1.24	BBS_port[0] = (in_port_t)atoi(q);
131	sysadm	1.11	}
132	sysadm	1.24	else if (strcasecmp(p, "bbs_ssh_port") == 0)
133	sysadm	1.11	{
134	sysadm	1.24	BBS_port[1] = (in_port_t)atoi(q);
135	sysadm	1.11	}
136	sysadm	1.22	else if (strcasecmp(p, "bbs_max_client") == 0)
137	sysadm	1.11	{
138	sysadm	1.22	BBS_max_client = atoi(q);
139			if (BBS_max_client <= 0 \|\| BBS_max_client > MAX_CLIENT_LIMIT)
140			{
141	sysadm	1.36	log_error("Ignore config bbs_max_client with incorrect value %d", BBS_max_client);
142	sysadm	1.22	BBS_max_client = MAX_CLIENT_LIMIT;
143			}
144	sysadm	1.11	}
145	sysadm	1.22	else if (strcasecmp(p, "bbs_max_client_per_ip") == 0)
146	sysadm	1.11	{
147	sysadm	1.22	BBS_max_client_per_ip = atoi(q);
148			if (BBS_max_client_per_ip <= 0 \|\| BBS_max_client_per_ip > MAX_CLIENT_PER_IP_LIMIT)
149	sysadm	1.21	{
150	sysadm	1.36	log_error("Ignore config bbs_max_client with incorrect value %d", BBS_max_client_per_ip);
151	sysadm	1.22	BBS_max_client_per_ip = MAX_CLIENT_PER_IP_LIMIT;
152	sysadm	1.21	}
153			}
154	sysadm	1.22	else if (strcasecmp(p, "bbs_start_dt") == 0)
155	sysadm	1.11	{
156	sysadm	1.22	y = strtok_r(q, "-", &saveptr);
157			m = strtok_r(NULL, "-", &saveptr);
158			d = strtok_r(NULL, "-", &saveptr);
159
160			if (y == NULL \|\| m == NULL \|\| d == NULL)
161			{
162	sysadm	1.36	log_error("Ignore config bbs_start_dt with incorrect value");
163	sysadm	1.22	continue;
164			}
165	sysadm	1.29	snprintf(BBS_start_dt, sizeof(BBS_start_dt), "%4s年%2s月%2s日", y, m, d);
166	sysadm	1.11	}
167	sysadm	1.30	else if (strcasecmp(p, "bbs_sys_id") == 0)
168			{
169			v = atoi(q);
170	sysadm	1.31	if (v <= 0)
171	sysadm	1.30	{
172	sysadm	1.36	log_error("Ignore config bbs_sys_id with incorrect value %d", v);
173	sysadm	1.30	continue;
174			}
175			BBS_sys_id = v;
176			}
177	sysadm	1.22	else if (strcasecmp(p, "db_host") == 0)
178	sysadm	1.11	{
179	sysadm	1.22	strncpy(DB_host, q, sizeof(DB_host) - 1);
180			DB_host[sizeof(DB_host) - 1] = '\0';
181	sysadm	1.11	}
182	sysadm	1.22	else if (strcasecmp(p, "db_username") == 0)
183	sysadm	1.11	{
184	sysadm	1.22	strncpy(DB_username, q, sizeof(DB_username) - 1);
185			DB_username[sizeof(DB_username) - 1] = '\0';
186	sysadm	1.11	}
187	sysadm	1.22	else if (strcasecmp(p, "db_password") == 0)
188	sysadm	1.11	{
189	sysadm	1.22	strncpy(DB_password, q, sizeof(DB_password) - 1);
190			DB_password[sizeof(DB_password) - 1] = '\0';
191	sysadm	1.11	}
192	sysadm	1.22	else if (strcasecmp(p, "db_database") == 0)
193	sysadm	1.11	{
194	sysadm	1.22	strncpy(DB_database, q, sizeof(DB_database) - 1);
195			DB_database[sizeof(DB_database) - 1] = '\0';
196	sysadm	1.11	}
197	sysadm	1.22	else if (strcasecmp(p, "db_timezone") == 0)
198	sysadm	1.11	{
199	sysadm	1.22	strncpy(DB_timezone, q, sizeof(DB_timezone) - 1);
200			DB_timezone[sizeof(DB_timezone) - 1] = '\0';
201	sysadm	1.11	}
202	sysadm	1.22	else
203	sysadm	1.12	{
204	sysadm	1.36	log_error("Unknown config %s = %s", p, q);
205	sysadm	1.12	}
206	sysadm	1.5	}
207	sysadm	1.4
208	sysadm	1.11	fclose(fin);
209	sysadm	1.9
210	sysadm	1.11	return 0;
211	sysadm	1.4	}
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