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/*
* Copyright (C) 1999-2011 Andrej N. Gritsenko <andrej@rep.kiev.ua>
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is part of FoxEye's source: modules layer (load/unload/changing flags).
*/
#include "foxeye.h"
#ifndef STATIC
# ifdef HAVE_DLFCN_H
# include <dlfcn.h>
# endif
#endif
#include "modules.h"
#include "init.h"
#ifdef _OPENBSD
# undef RTLD_NOW
# define RTLD_NOW DL_LAZY
#endif
static struct bindtable_t *BT_Modadd = NULL;
static struct bindtable_t *BT_Moddel = NULL;
static INTERFACE *_last_collected = NULL;
static char ModuleList[LONG_STRING];
static int scr_collect (INTERFACE *iface, REQUEST *req)
{
if (!req)
DBG ("modules.c:scr_collect: strange dummy call");
else if (req->from && req->from != _last_collected && req->from->name)
{
if (_last_collected != NULL)
strfcat (ModuleList, " ", sizeof(ModuleList));
strfcat (ModuleList, req->from->name, sizeof(ModuleList));
_last_collected = req->from;
}
return REQ_OK;
}
/* need for static compiling */
#define _MODULES_C 1
#include "modules.h"
ScriptFunction (FE_module)
{
char cmd;
char *c;
char name[SHORT_STRING];
INTERFACE *tmp;
struct binding_t *bind = NULL;
SigFunction (*func) (char *);
iftype_t (*mods) (INTERFACE *, ifsig_t);
char path[STRING];
#ifndef STATIC
void *modh;
#else
register int i;
#endif
if (!args || !*args) /* func must have parameters! */
return 0;
if (*args == '-')
{
if (args[1] == 'l') /* get list of modules */
{
tmp = Add_Iface (I_TEMP, NULL, NULL, &scr_collect, NULL);
ModuleList[0] = 0;
_last_collected = NULL;
Set_Iface (tmp);
ReportFormat = NULL;
Send_Signal (I_MODULE, "*", S_REPORT);
while (Get_Request());
Unset_Iface();
tmp->ift = I_DIED;
BindResult = ModuleList;
return -1;
}
cmd = args[1];
args = NextWord ((char *)args); /* it's still const */
}
else
cmd = 'l'; /* load the module */
/* find loaded module */
strfcpy (name, args, sizeof(name));
args = NextWord ((char *)args); /* it's still const */
for (c = name; *c && *c != ' '; c++);
*c = 0;
if (cmd == 'c') /* check if module loaded */
{
if (Find_Iface (I_MODULE, name))
{
Unset_Iface();
return -1;
}
}
else if (cmd == 'd') /* unload the module */
{
tmp = Find_Iface (I_MODULE, name);
if (!tmp) /* check if don't loaded */
return 0;
snprintf (path, sizeof(path), "Module %s unloaded.", name);
ShutdownR = path;
tmp->IFSignal (tmp, S_TERMINATE); /* kill the module */
ShutdownR = NULL;
#ifndef STATIC
dlclose (tmp->data); /* close dll */
tmp->data = NULL;
#endif
tmp->ift = I_DIED;
Unset_Iface(); /* unlock after Find_Iface() */
if (!BT_Moddel)
BT_Moddel = Add_Bindtable ("unload", B_MASK);
do
{
if ((bind = Check_Bindtable (BT_Moddel, name, U_ALL, U_ANYCH, bind)))
{
if (bind->name)
RunBinding (bind, NULL, name, NULL, NULL, -1, NULL);
else
bind->func (name);
}
} while (bind);
Add_Request (I_LOG, "*", F_BOOT, "Unloaded module %s", name);
return 1;
}
else if (cmd == 'l') /* load the module */
{
/* check if already loaded */
if (Find_Iface (I_MODULE, name))
{
Unset_Iface();
Add_Request(I_LOG, "*", F_BOOT,
"Attempt to load already loaded module %s", name);
return 1;
}
/* find module and startup function */
#ifndef STATIC
snprintf (path, sizeof(path), MODULESDIR "/%s.so", name);
modh = dlopen (path, RTLD_NOW); /* force symbols resolving */
if (modh == NULL)
func = NULL;
else
func = (SigFunction (*)())dlsym (modh, "ModuleInit");
if (!func)
{
c = (char *)dlerror();
ERROR ("cannot load module %s: %s", name, NONULL(c));
if (modh)
dlclose (modh);
return 0;
}
#else
for (i = 0; ModulesTable[i].name; i++)
if (!safe_strcasecmp (ModulesTable[i].name, name))
break;
if ((func = ModulesTable[i].func) == NULL)
{
ERROR ("cannot start module %s: not found", name);
return 0;
}
#endif
#ifndef STATIC
if (!(tmp = Add_Iface (I_MODULE, name, NULL, NULL, modh)))
{
dlclose (modh);
#else
if (!(tmp = Add_Iface (I_MODULE, name, NULL, NULL, NULL)))
{
#endif
ERROR ("module %s: cannot create interface.", name);
return 0;
}
/* start the module */
strfcpy (path, args, sizeof(path)); /* make a copy before call */
mods = func (path);
if (mods == NULL)
{
ERROR ("module %s: ModuleInit() error.", name);
#ifndef STATIC
dlclose (modh);
tmp->data = NULL;
#endif
tmp->ift = I_DIED;
return 0;
}
Set_Iface (tmp); /* just in case */
tmp->IFSignal = mods;
Unset_Iface();
if (!BT_Modadd)
BT_Modadd = Add_Bindtable ("load", B_MASK);
do
{
if ((bind = Check_Bindtable (BT_Modadd, name, U_ALL, U_ANYCH, bind)))
{
if (bind->name)
RunBinding (bind, NULL, name, NULL, NULL, -1, NULL);
else
bind->func (name, args);
}
} while (bind);
if (*path)
Add_Request (I_LOG, "*", F_BOOT, "Loaded module %s (with args \"%s\")",
name, path);
else
Add_Request (I_LOG, "*", F_BOOT, "Loaded module %s", name);
return -1;
}
else /* unknown command? */
ERROR ("invalid call: module -%c %s", cmd, args);
return 0;
}
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