1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#include <signal.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <libdaemon/dlog.h>
#include <libdaemon/dfork.h>
#include <libdaemon/dpid.h>
#include "main.h"
#include "exec.h"
#include "modemman.h"
#include "msntab.h"
#include "cmdline.h"
oop_source* event_source = NULL;
struct gengetopt_args_info args;
const char *appname = NULL, *username = NULL;
#define DEFAULT_MSNTABLE "../conf/msntab"
static void *oop_exit_cb(oop_source *source, int sig, void *user) {
daemon_log(LOG_ERR, "Recieved signal %s", sig == SIGINT ? "SIGINT" : (sig == SIGTERM ? "SIGTERM" : "UNKNWON"));
return OOP_HALT;
}
static void *oop_reload_cb(oop_source *source, int sig, void *user) {
daemon_log(LOG_ERR, "Reloading MSN table.");
msntab_flush();
if (msntab_load(args.msntab_arg ? args.msntab_arg : DEFAULT_MSNTABLE) < 0) {
daemon_log(LOG_ERR, "Ignoring all calls.");
msntab_flush();
}
return OOP_CONTINUE;
}
static void *oop_dump_cb(oop_source *source, int sig, void *user) {
msntab_dump();
return OOP_CONTINUE;
}
int main_loop(void) {
int r = -1, retval_sent = 0;
oop_source_sys *sys = NULL;
daemon_log(LOG_INFO, "Starting up.");
if (!(sys = oop_sys_new())) {
daemon_log(LOG_ERR, "Failed to create system source.");
goto finish;
}
event_source = oop_sys_source(sys);
assert(event_source);
if (child_process_init() < 0)
goto finish;
if (msntab_load(args.msntab_arg ? args.msntab_arg : DEFAULT_MSNTABLE) < 0)
goto finish;
if (modem_manager_init(args.channels_arg) < 0)
goto finish;
event_source->on_signal(event_source, SIGINT, oop_exit_cb, NULL);
event_source->on_signal(event_source, SIGTERM, oop_exit_cb, NULL);
event_source->on_signal(event_source, SIGHUP, oop_reload_cb, NULL);
event_source->on_signal(event_source, SIGUSR1, oop_dump_cb, NULL);
signal(SIGPIPE, SIG_IGN);
if (!args.no_daemon_flag) {
daemon_retval_send(0);
retval_sent = 1;
}
daemon_log(LOG_INFO, "Start up complete.");
if (oop_sys_run(sys) == OOP_ERROR) {
daemon_log(LOG_ERR, "oop_sys_new() returned OOP_ERROR");
goto finish;
}
r = 0;
finish:
daemon_log(LOG_INFO, "Shutting down.");
if (!retval_sent && !args.no_daemon_flag)
daemon_retval_send(1);
event_source->cancel_signal(event_source, SIGTERM, oop_exit_cb, NULL);
event_source->cancel_signal(event_source, SIGINT, oop_exit_cb, NULL);
event_source->cancel_signal(event_source, SIGHUP, oop_reload_cb, NULL);
event_source->cancel_signal(event_source, SIGUSR1, oop_dump_cb, NULL);
msntab_flush();
modem_manager_done();
child_process_done();
if (sys) {
event_source = NULL;
oop_sys_delete(sys);
}
daemon_log(LOG_INFO, "Shut down complete.");
return r;
}
int main(int argc, char*argv[]) {
pid_t pid;
int ret;
appname = daemon_pid_file_ident = daemon_log_ident = daemon_ident_from_argv0(argv[0]);
cmdline_parser(argc, argv, &args);
if (args.no_syslog_flag)
daemon_log_use = DAEMON_LOG_STDERR;
if (args.kill_flag) {
int ret;
if ((ret = daemon_pid_file_kill_wait(SIGINT, 5)) < 0)
daemon_log(LOG_WARNING, "Failed to kill daemon.");
return ret < 0 ? 1 : 0;
}
if (args.check_flag) {
if ((pid = daemon_pid_file_is_running()) >= 0)
daemon_log(LOG_INFO, "Daemon running on PID %u.", pid);
else
daemon_log(LOG_INFO, "Daemon not running.");
return 1;
}
if ((pid = daemon_pid_file_is_running()) >= 0) {
daemon_log(LOG_ERR, "Daemon already running on PID %u.", pid);
return 1;
}
if (!args.no_daemon_flag) {
daemon_retval_init();
if ((pid = daemon_fork()) < 0) {
daemon_retval_done();
return 1;
} else if (pid) {
int ret;
if ((ret = daemon_retval_wait(20)) < 0) {
daemon_log(LOG_ERR, "Failed to recieve return value from daemon process.");
return 255;
}
if (ret)
daemon_log(LOG_ERR, "Daemon returned %i as return value.", ret);
return ret;
}
}
if (daemon_pid_file_create() < 0) {
daemon_log(LOG_ERR, "Could not create PID file (%s).", strerror(errno));
if (!args.no_daemon_flag)
daemon_retval_send(1);
return 1;
}
ret = main_loop() < 0 ? 1 : 0;
daemon_pid_file_remove();
return ret;
}
|
