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
|
/*
winnie - an experimental window system
Copyright (C) 2013 Eleni Maria Stea
This program 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
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Author: Eleni Maria Stea <elene.mst@gmail.com>
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <vector>
#include <dlfcn.h>
#include "client_plugins.h"
struct Plugin {
void *so;
bool (*init)();
void (*cleanup)();
};
static char *strip_wspace(char *s);
static std::vector<Plugin> plugins;
bool init_client_plugins()
{
FILE *fp = fopen("plugins.conf", "r");
if(!fp) {
fprintf(stderr, "failed to load plugin list: plugins.conf: %s\n", strerror(errno));
return false;
}
plugins.clear();
char buf[512];
while(fgets(buf, sizeof buf, fp)) {
char *line = strip_wspace(buf);
if(!*line || *line == '#') {
continue;
}
Plugin plugin;
plugin.so = dlopen(line, RTLD_LAZY);
if(!plugin.so) {
fprintf(stderr, "failed to load plugin: %s: %s\n", line, dlerror());
continue;
}
if(!(plugin.init = (bool (*)())dlsym(plugin.so, "init"))) {
fprintf(stderr, "invalid plugin: %s: no init function\n", line);
dlclose(plugin.so);
continue;
}
plugin.cleanup = (void (*)())dlsym(plugin.so, "cleanup");
if(!plugin.init()) {
fprintf(stderr, "failed to initialize plugin: %s\n", line);
dlclose(plugin.so);
continue;
}
printf("loaded plugin: %s\n", line);
plugins.push_back(plugin);
}
fclose(fp);
return true;
}
void destroy_client_plugins()
{
for(size_t i=0; i<plugins.size(); i++) {
if(plugins[i].cleanup) {
plugins[i].cleanup();
}
dlclose(plugins[i].so);
}
plugins.clear();
}
static char *strip_wspace(char *s)
{
if(!s || !*s) {
return s;
}
while(*s && isspace(*s)) s++;
char *endp = s + strlen(s) - 1;
while(*endp && isspace(*endp)) {
*endp-- = 0;
}
return s;
}
|
