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
|
/*
* rhnop
*
* Copyright (C) 2011 Christian Pointner <equinox@helsinki.at>
*
* This file is part of rhnop.
*
* rhnop 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
* any later version.
*
* rhnop is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rhnop. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <pthread.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include "l_pipe.h"
#include "config.h"
#define LUA_MAIN_LOOP_FUNC "main_loop"
#define QLISTENER LIBDIR"/qlistener.lua"
#define TCPSERVER LIBDIR"/tcpserver.lua"
static const luaL_Reg nopsyncd_lualibs[] = {
{"", luaopen_base},
{LUA_LOADLIBNAME, luaopen_package},
{LUA_TABLIBNAME, luaopen_table},
{LUA_STRLIBNAME, luaopen_string},
{LUA_MATHLIBNAME, luaopen_math},
{LUA_MATHLIBNAME, luaopen_io},
{LUA_MATHLIBNAME, luaopen_os},
{LUA_MATHLIBNAME, luaopen_pipe},
{NULL, NULL}
};
int init_main_loop(lua_State *L, const char* filename)
{
const luaL_Reg *lib = nopsyncd_lualibs;
for (; lib->func; lib++) {
lua_pushcfunction(L, lib->func);
lua_pushstring(L, lib->name);
lua_call(L, 1, 0);
}
int ret = luaL_loadfile(L, filename);
if(ret) {
const char* err_str = luaL_checkstring(L, -1);
switch(ret) {
case LUA_ERRSYNTAX: fprintf(stderr, "luaL_loadfile() syntax error: %s\n", err_str); break;
case LUA_ERRMEM: fprintf(stderr, "luaL_loadfile() malloc error: %s\n", err_str); break;
case LUA_ERRFILE: fprintf(stderr, "lauL_loadfile() error: %s\n", err_str); break;
default: fprintf(stderr, "luaL_loadfile() unknown error: %s\n", err_str); break;
}
return -1;
}
lua_pushstring(L, LIBDIR);
lua_setglobal(L, "rhnoplibdir");
ret = lua_pcall(L, 0, 0, 0);
if(ret) {
const char* err_str = luaL_checkstring(L, -1);
switch(ret) {
case LUA_ERRRUN: fprintf(stderr, "lua_pcall() runtime error: %s\n", err_str); break;
case LUA_ERRMEM: fprintf(stderr, "lua_pcall() malloc error: %s\n", err_str); break;
case LUA_ERRERR: fprintf(stderr, "lua_pcall() error at error handler function: %s\n", err_str); break;
}
return -1;
}
return 0;
}
int call_main_loop(lua_State* L, const char* filename)
{
lua_getglobal(L, LUA_MAIN_LOOP_FUNC);
if(!lua_isfunction(L, -1)) {
fprintf(stderr, "there is no function '%s' at file '%s'\n", LUA_MAIN_LOOP_FUNC, filename);
return -1;
};
int ret = lua_pcall(L, 0, 1, 0);
if(ret) {
const char* err_str = luaL_checkstring(L, -1);
switch(ret) {
case LUA_ERRRUN: fprintf(stderr, "lua_pcall(%s:%s) runtime error: %s\n", filename, LUA_MAIN_LOOP_FUNC, err_str); break;
case LUA_ERRMEM: fprintf(stderr, "lua_pcall(%s:%s) malloc error: %s\n", filename, LUA_MAIN_LOOP_FUNC, err_str); break;
case LUA_ERRERR: fprintf(stderr, "lua_pcall(%s:%s) error at error handler function: %s\n", filename, LUA_MAIN_LOOP_FUNC, err_str); break;
}
return -1;
}
ret = lua_tointeger(L, 1);
return ret;
}
void* main_loop(void* file)
{
if(!file)
pthread_exit(NULL);
lua_State *L;
L = luaL_newstate();
if(!L) {
fprintf(stderr, "error creating lua state\n");
pthread_exit(NULL);
}
int ret = init_main_loop(L, (char*)file);
if(!ret)
ret = call_main_loop(L, (char*)file);
printf("%s returned with %d\n", (char*)file, ret);
lua_close(L);
/* this should bring down the other thread as well
at least this is true for the tcp-server thread */
pipe_close();
pthread_exit(NULL);
}
int main(int argc, char* argv[])
{
printf("starting nopsyncd...\n");
pthread_t qlistener, tcpserver;
int ret = pipe_init();
if(ret) {
fprintf(stderr, "Error creating pipe: %s\n", strerror(errno));
return 1;
}
ret = pthread_create(&qlistener, NULL, main_loop, QLISTENER);
if(ret) {
fprintf(stderr, "Error creating qlistener thread (code: %d)\n", ret);
return 1;
}
pthread_detach(qlistener); /* can't kill this thread so don't join to it */
ret = pthread_create(&tcpserver, NULL, main_loop, TCPSERVER);
if(ret) {
fprintf(stderr, "Error creating qlistener thread (code: %d)\n", ret);
return 1;
}
/* this thread can't be cancelled so don't wait for it */
/* pthread_join(qlistener, NULL); */
pthread_join(tcpserver, NULL);
printf("stopping nopsyncd.\n");
return 0;
}
|
