load.c
2.87 KB
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
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
GNU Mailutils is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Mailutils 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GNU Mailutils; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_LIBLTDL
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sieve.h>
#include <ltdl.h>
typedef int (*sieve_module_init_t) __PMT((sieve_machine_t mach));
static void
_free_loaded_module (void *data)
{
lt_dlclose ((lt_dlhandle)data);
lt_dlexit ();
}
static lt_dlhandle
load_module (sieve_machine_t mach, const char *name)
{
lt_dlhandle handle;
if (lt_dlinit ())
return NULL;
handle = lt_dlopenext (name);
if (handle)
{
sieve_module_init_t init = (sieve_module_init_t)
lt_dlsym (handle, "init");
if (init)
{
init (mach);
sieve_machine_add_destructor (mach, _free_loaded_module, handle);
return handle;
}
else
{
lt_dlclose (handle);
handle = NULL;
}
}
if (!handle)
{
sieve_error (mach, "%s", lt_dlerror ());
lt_dlexit ();
}
return handle;
}
static void
fix_module_name (char *name)
{
for (; *name; name++)
{
if (isalnum (*name) || *name == '.' || *name == ',')
continue;
*name = '-';
}
}
int
sieve_load_ext (sieve_machine_t mach, const char *name)
{
lt_dlhandle handle;
char *modname;
modname = strdup (name);
if (!modname)
return 1;
fix_module_name (modname);
handle = load_module (mach, modname);
free (modname);
return handle == NULL;
}
static int
_load_dir (void *item, void *unused)
{
return lt_dladdsearchdir (item);
}
int
sieve_load_add_path (list_t path)
{
if (lt_dlinit ())
return 1;
return list_do (path, _load_dir, NULL);
}
int
sieve_load_add_dir (sieve_machine_t mach, const char *name)
{
if (lt_dlinit ())
return 1;
sieve_machine_add_destructor (mach, (sieve_destructor_t) lt_dlexit, NULL);
return lt_dladdsearchdir (name);
}
#else
#include <sieve.h>
int
sieve_load_ext (sieve_machine_t mach, const char *name)
{
return 1;
}
int
sieve_load_add_path (list_t path)
{
return 1;
}
int
sieve_load_add_dir (sieve_machine_t mach, const char *name)
{
return 1;
}
#endif /* HAVE_LIBLTDL */