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/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#ifdef DL_OPEN
#include <dlfcn.h>
#endif
#ifdef UNISTD
#include <stdlib.h>
#include <unistd.h>
#endif
#ifdef MSW
#include <io.h>
#include <windows.h>
#endif
#ifdef MACOSX
#include <mach-o/dyld.h>
#endif
#include <string.h>
#include "m_pd.h"
#include "s_stuff.h"
#include <stdio.h>
typedef void (*t_xxx)(void);
static char sys_dllextent[] =
#ifdef __FreeBSD__
".pd_freebsd";
#endif
#ifdef IRIX
#ifdef N32
".pd_irix6";
#else
".pd_irix5";
#endif
#endif
#ifdef __linux__
".pd_linux";
#endif
#ifdef MACOSX
".pd_darwin";
#endif
#ifdef MSW
".dll";
#endif
void class_set_extern_dir(t_symbol *s);
static int sys_load_lib_alt(char *dirname, char *classname, char *altname)
{
char symname[MAXPDSTRING], filename[MAXPDSTRING], dirbuf[MAXPDSTRING],
classname2[MAXPDSTRING], *nameptr, *lastdot,
altsymname[MAXPDSTRING];
void *dlobj;
t_xxx makeout = NULL;
int fd;
#ifdef MSW
HINSTANCE ntdll;
#endif
#if 0
fprintf(stderr, "lib %s %s\n", dirname, classname);
#endif
/* try looking in the path for (classname).(sys_dllextent) ... */
if ((fd = open_via_path(dirname, classname, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) < 0)
{
/* next try (classname)/(classname).(sys_dllextent) ... */
strncpy(classname2, classname, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(classname2, "/");
strncat(classname2, classname, MAXPDSTRING-strlen(classname2));
filename[MAXPDSTRING-1] = 0;
if ((fd = open_via_path(dirname, classname2, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) < 0)
{
/* next try (alternative_classname).(sys_dllextent) */
if(altname)
{
if ((fd = open_via_path(dirname, altname, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) < 0)
/* next try (alternative_classname)/(alternative_classname).(sys_dllextent) ... */
strncpy(classname2, altname, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(classname2, "/");
strncat(classname2, altname, MAXPDSTRING-strlen(classname2));
filename[MAXPDSTRING-1] = 0;
if ((fd = open_via_path(dirname, classname2, sys_dllextent,
dirbuf, &nameptr, MAXPDSTRING, 1)) < 0)
{
return 0;
}
}
else
return (0);
}
}
close(fd);
class_set_extern_dir(gensym(dirbuf));
/* refabricate the pathname */
strncpy(filename, dirbuf, MAXPDSTRING);
filename[MAXPDSTRING-2] = 0;
strcat(filename, "/");
strncat(filename, nameptr, MAXPDSTRING-strlen(filename));
filename[MAXPDSTRING-1] = 0;
/* extract the setup function name */
if (lastdot = strrchr(nameptr, '.'))
*lastdot = 0;
#ifdef MACOSX
strcpy(symname, "_");
strcat(symname, nameptr);
if(altname)
{
strcpy(altsymname, "_setup_");
strcat(symname, altname);
}
#else
strcpy(symname, nameptr);
if(altname)
{
strcpy(altsymname, "setup_");
strcat(altsymname, altname);
}
#endif
/* if the last character is a tilde, replace with "_tilde" */
if (symname[strlen(symname) - 1] == '~')
strcpy(symname + (strlen(symname) - 1), "_tilde");
/* and append _setup to form the C setup function name */
strcat(symname, "_setup");
#ifdef DL_OPEN
dlobj = dlopen(filename, RTLD_NOW | RTLD_GLOBAL);
if (!dlobj)
{
post("%s: %s", filename, dlerror());
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)dlsym(dlobj, symname);
if(!makeout)makeout = (t_xxx)dlsym(dlobj, altsymname);
#endif
#ifdef MSW
sys_bashfilename(filename, filename);
ntdll = LoadLibrary(filename);
if (!ntdll)
{
post("%s: couldn't load", filename);
class_set_extern_dir(&s_);
return (0);
}
makeout = (t_xxx)GetProcAddress(ntdll, symname);
if(!makeout)makeout = (t_xxx)GetProcAddress(ntdll, altsymname);
#endif
#if defined(MACOSX) && !defined(DL_OPEN)
{
NSObjectFileImage image;
void *ret;
NSSymbol s;
if ( NSCreateObjectFileImageFromFile( filename, &image) != NSObjectFileImageSuccess )
{
post("%s: couldn't load", filename);
class_set_extern_dir(&s_);
return 0;
}
ret = NSLinkModule( image, filename,
NSLINKMODULE_OPTION_BINDNOW |
NSLINKMODULE_OPTION_RETURN_ON_ERROR);
if (ret == NULL) {
int err;
const char *fname, *errt;
NSLinkEditErrors c;
NSLinkEditError(&c, &err, &fname, &errt);
post("link error %d %s %s", err, fname, errt);
return 0;
}
s = NSLookupSymbolInModule(ret, symname);
if(!s)s=NSLookupSymbolInModule(ret, altsymname);
if (s)
makeout = (t_xxx)NSAddressOfSymbol( s);
else makeout = 0;
}
#endif
if (!makeout)
{
post("load_object: Symbol \"%s\" not found", symname);
if(altname)
post("load_object: Symbol \"%s\" not found", altsymname);
class_set_extern_dir(&s_);
return 0;
}
(*makeout)();
class_set_extern_dir(&s_);
return (1);
}
/* callback type definition */
typedef int (*loader_t)(char *dirname, char *classname, char *altname);
/* linked list of loaders */
typedef struct loader_queue {
loader_t loader;
struct loader_queue *next;
} loader_queue_t;
static loader_queue_t loaders = {sys_load_lib_alt, NULL};
/* register class loader function */
void sys_register_loader(loader_t loader)
{
loader_queue_t *q = &loaders;
while (1)
{
if (q->next)
q = q->next;
else
{
q->next = (loader_queue_t *)getbytes(sizeof(loader_queue_t));
q->next->loader = loader;
q->next->next = NULL;
break;
}
}
}
int sys_load_lib(char *dirname, char *classname, char *altname)
{
int dspstate = canvas_suspend_dsp();
int ok = 0;
loader_queue_t *q;
for(q = &loaders; q; q = q->next)
if(ok = q->loader(dirname, classname, altname)) break;
canvas_resume_dsp(dspstate);
return ok;
}
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