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
|
#include "plugins.h"
#include "common.h"
#include "plugin_registry.h"
#include <stdlib.h>
#include <stdio.h>
#include <dlfcn.h>
#include <stdbool.h>
#include <string.h>
static const void *plugin_dlsym(int stderr_fd, void *handle, const bool mandatory, const char *name)
{
const void *sym = dlsym(handle, name);
if(sym == NULL)
{
if(mandatory)
{
dprintf(stderr_fd, _("Cannot load %s, aborting: %s.\n"), name, dlerror());
}
else
{
dprintf(stderr_fd, _("Cannot load %s, ignoring: %s.\n"), name, dlerror());
}
return NULL;
}
return sym;
}
int plugin_unload(int stderr_fd, struct plugin *plugin)
{
if(plugin->fc_unload != NULL)
{
struct epg_handle hdl;
plugcall_setup_handle(plugin, &hdl);
int unload_r = plugin->fc_unload(&hdl);
if(unload_r)
{
dprintf(stderr_fd, _("Cannot unload plugin: it returned an error: %d.\n"), unload_r);
return unload_r;
}
}
if(plugin->handle != NULL)
{
dlclose(plugin->handle);
plugin->handle = NULL;
}
return 0;
}
static int plugin_load_v1(int stderr_fd, struct plugin *out)
{
int r = 0;
const void *sym;
sym = plugin_dlsym(stderr_fd, out->handle, true, "epg_name");
if(sym == NULL)
{
r = 64;
goto cleanup;
}
out->name = *(char**)sym;
out->fc_load = plugin_dlsym(stderr_fd, out->handle, false, "epg_load");
out->fc_unload = plugin_dlsym(stderr_fd, out->handle, false, "epg_unload");
out->fc_player_join = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_join");
out->fc_player_leave = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_leave");
out->fc_player_say = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_say");
out->fc_player_die = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_die");
out->fc_player_achievement = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_achievement");
out->fc_player_challenge = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_challenge");
out->fc_player_goal = plugin_dlsym(stderr_fd, out->handle, false, "epg_player_goal");
out->fc_server_stopping = plugin_dlsym(stderr_fd, out->handle, false, "epg_server_stopping");
out->fc_server_starting = plugin_dlsym(stderr_fd, out->handle, false, "epg_server_starting");
out->fc_server_started = plugin_dlsym(stderr_fd, out->handle, false, "epg_server_started");
goto cleanup;
cleanup:
return r;
}
int plugin_load(int stderr_fd, const char *path, const int id, struct plugin *out)
{
int r = 0;
out->id = id;
out->path = path;
out->handle = NULL;
out->name = NULL;
out->version = 0;
out->fc_load = NULL;
out->fc_unload = NULL;
out->fc_player_join = NULL;
out->fc_player_leave = NULL;
out->fc_player_say = NULL;
out->fc_player_die = NULL;
out->fc_player_achievement = NULL;
out->fc_player_challenge = NULL;
out->fc_player_goal = NULL;
out->fc_server_stopping = NULL;
out->fc_server_starting = NULL;
out->fc_server_started = NULL;
void *handle = dlopen(path, RTLD_LAZY);
if(handle == NULL)
{
dprintf(stderr_fd, _("Cannot load %s: %s.\n"), path, dlerror());
r = 1;
goto cleanup;
}
out->handle = handle;
const void *sym = plugin_dlsym(stderr_fd, handle, true, "epg_version");
if(sym == NULL)
{
r = 64;
goto cleanup;
}
out->version = *(uint32_t*)sym;
switch(out->version)
{
case 1:
r = plugin_load_v1(stderr_fd, out);
if(r) goto cleanup;
break;
default:
dprintf(stderr_fd, _("Unsupported plugin %s: Incompatible with version %u.\n"), path, out->version);
break;
}
struct epg_handle hdl;
plugcall_setup_handle(out, &hdl);
r = out->fc_load(&hdl);
if(r)
{
dprintf(stderr_fd, _("Cannot load plugin: it returned an error: %d.\n"), r);
goto cleanup;
}
goto cleanup;
cleanup:
if(r) plugin_unload(stderr_fd, out);
return r;
}
|
