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
|
#include <sys/socket.h>
#include <sys/un.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include "pingu_adm.h"
#define LIBNAME "pingu.client"
#if LUA_VERSION_NUM < 502
# define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
#endif
static int pusherror(lua_State *L, const char *info)
{
lua_pushnil(L);
if (info == NULL)
lua_pushstring(L, strerror(errno));
else
lua_pushfstring(L, "%s: %s", info, strerror(errno));
lua_pushinteger(L, errno);
return 3;
}
static int pushfile(lua_State *L, int fd, const char *mode)
{
FILE **f = (FILE **)lua_newuserdata(L, sizeof(FILE *));
*f = NULL;
luaL_getmetatable(L, "FILE*");
lua_setmetatable(L, -2);
*f = fdopen(fd, mode);
return (*f != NULL);
}
static int Padm_open(lua_State *L)
{
const char *socket_path = luaL_optstring(L, 1, DEFAULT_ADM_SOCKET);
struct sockaddr_un sun;
int fd, ret;
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_UNIX;
strncpy(sun.sun_path, socket_path, sizeof(sun.sun_path));
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return pusherror(L, "socket");
if (connect(fd, (struct sockaddr *) &sun, sizeof(sun)) < 0) {
ret = pusherror(L, socket_path);
goto close_err;
}
return pushfile(L, fd, "r+");
close_err:
close(fd);
return ret;
}
static const luaL_Reg reg_pingu_methods[] = {
{"open", Padm_open},
{NULL, NULL},
};
LUALIB_API int luaopen_pingu_client(lua_State *L)
{
luaL_newlib(L, reg_pingu_methods);
lua_pushliteral(L, "version");
lua_pushliteral(L, PINGU_VERSION);
lua_settable(L, -3);
return 1;
}
|
