[imager.git] / dynaload.c

#if defined(OS_hpux)
#include <dl.h>
typedef shl_t minthandle_t;
#elif defined(WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
typedef HMODULE minthandle_t;
#undef WIN32_LEAN_AND_MEAN
#else 
#include <dlfcn.h>
typedef void *minthandle_t; 
#endif 

#include "plug.h"

struct DSO_handle_tag {
  minthandle_t handle;
  char *filename;
  func_ptr *function_list;
};

#include "imager.h"
#include "dynaload.h"
/* #include "XSUB.h"  so we can compile on threaded perls */
#include "imageri.h"

static symbol_table_t symbol_table=
  {
    i_has_format,
    ICL_set_internal,
    ICL_info,
    i_img_new,
    i_img_empty,
    i_img_empty_ch,
    i_img_exorcise,
    i_img_info,
    i_img_setmask,
    i_img_getmask,
    i_box,
    i_line,
    i_arc,
    i_copyto,
    i_copyto_trans,
    i_rubthru
  };


/*
  Dynamic loading works like this:
  dynaload opens the shared object and
  loads all the functions into an array of functions
  it returns a string from the dynamic function that
  can be supplied to the parser for evaling.
*/

void
DSO_call(DSO_handle *handle,int func_index,HV* hv) {
  mm_log((1,"DSO_call(handle %p, func_index %d, hv %p)\n",
	  handle, func_index, hv));
  (handle->function_list[func_index].iptr)((void*)hv);
}

func_ptr *
DSO_funclist(DSO_handle *handle) {
  return handle->function_list;
}


#if defined( OS_hpux )

void*
DSO_open(char* file,char** evalstring) {
  shl_t tt_handle;
  void *d_handle,**plugin_symtab,**plugin_utiltab;
  int  rc,*iptr, (*fptr)(int);
  func_ptr *function_list;
  DSO_handle *dso_handle;
  void (*f)(void *s,void *u); /* these will just have to be void for now */
  int i;

  *evalstring=NULL;

  mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );

  if ( (tt_handle = shl_load(file, BIND_DEFERRED,0L)) == NULL) return NULL; 
  if ( (shl_findsym(&tt_handle, I_EVALSTR,TYPE_UNDEFINED,(void*)evalstring))) return NULL;

  /*
  if ( (shl_findsym(&tt_handle, "symbol_table",TYPE_UNDEFINED,(void*)&plugin_symtab))) return NULL;
  if ( (shl_findsym(&tt_handle, "util_table",TYPE_UNDEFINED,&plugin_utiltab))) return NULL;
  (*plugin_symtab)=&symbol_table;
  (*plugin_utiltab)=&i_UTIL_table;
  */

  if ( (shl_findsym(&tt_handle, I_INSTALL_TABLES ,TYPE_UNDEFINED, &f ))) return NULL; 
 
  mm_log( (1,"Calling install_tables\n") );
  f(&symbol_table,&i_UTIL_table);
  mm_log( (1,"Call ok.\n") ); 
 
  if ( (shl_findsym(&tt_handle, I_FUNCTION_LIST ,TYPE_UNDEFINED,(func_ptr*)&function_list))) return NULL; 
  if ( (dso_handle=(DSO_handle*)malloc(sizeof(DSO_handle))) == NULL) /* checked 17jul05 tonyc */
    return NULL;

  dso_handle->handle=tt_handle; /* needed to close again */
  dso_handle->function_list=function_list;
  if ( (dso_handle->filename=(char*)malloc(strlen(file)+1)) == NULL) { /* checked 17jul05 tonyc */
    free(dso_handle); return NULL;
  }
  strcpy(dso_handle->filename,file);

  mm_log((1,"DSO_open <- (0x%X)\n",dso_handle));
  return (void*)dso_handle;
}

undef_int
DSO_close(void *ptr) {
  DSO_handle *handle=(DSO_handle*) ptr;
  mm_log((1,"DSO_close(ptr 0x%X)\n",ptr));
  return !shl_unload((handle->handle));
}

#elif defined(WIN32)

void *
DSO_open(char *file, char **evalstring) {
  HMODULE d_handle;
  func_ptr *function_list;
  DSO_handle *dso_handle;
  
  void (*f)(void *s,void *u); /* these will just have to be void for now */

  mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",file,file,evalstring) );

  *evalstring = NULL;
  if ((d_handle = LoadLibrary(file)) == NULL) {
    mm_log((1, "DSO_open: LoadLibrary(%s) failed: %lu\n", file, GetLastError()));
    return NULL;
  }
  if ( (*evalstring = (char *)GetProcAddress(d_handle, I_EVALSTR)) == NULL) {
    mm_log((1,"DSO_open: GetProcAddress didn't fine '%s': %lu\n", I_EVALSTR, GetLastError()));
    FreeLibrary(d_handle);
    return NULL;
  }
  if ((f = (void (*)(void *, void*))GetProcAddress(d_handle, I_INSTALL_TABLES)) == NULL) {
    mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_INSTALL_TABLES, GetLastError()));
    FreeLibrary(d_handle);
    return NULL;
  }
  mm_log((1, "Calling install tables\n"));
  f(&symbol_table, &i_UTIL_table);
  mm_log((1, "Call ok\n"));
  
  if ( (function_list = (func_ptr *)GetProcAddress(d_handle, I_FUNCTION_LIST)) == NULL) {
    mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_FUNCTION_LIST, GetLastError()));
    FreeLibrary(d_handle);
    return NULL;
  }
  if ( (dso_handle = (DSO_handle*)malloc(sizeof(DSO_handle))) == NULL) { /* checked 17jul05 tonyc */
    mm_log( (1, "DSO_Open: out of memory\n") );
    FreeLibrary(d_handle);
    return NULL;
  }
  dso_handle->handle=d_handle; /* needed to close again */
  dso_handle->function_list=function_list;
  if ( (dso_handle->filename=(char*)malloc(strlen(file)+1)) == NULL) { /* checked 17jul05 tonyc */
    free(dso_handle);
    FreeLibrary(d_handle); 
    return NULL; 
  }
  strcpy(dso_handle->filename,file);

  mm_log( (1,"DSO_open <- %p\n",dso_handle) );
  return (void*)dso_handle;

}

undef_int
DSO_close(void *ptr) {
  DSO_handle *handle = (DSO_handle *)ptr;
  BOOL result = FreeLibrary(handle->handle);
  free(handle->filename);
  free(handle);

  return result;
}

#else

/* OS/2 has no dlclose; Perl doesn't provide one. */
#ifdef __EMX__ /* OS/2 */
int
dlclose(minthandle_t h) {
  return DosFreeModule(h) ? -1 : 0;
}
#endif /* __EMX__ */

void*
DSO_open(char* file,char** evalstring) {
  void *d_handle;
  func_ptr *function_list;
  DSO_handle *dso_handle;

  void (*f)(void *s,void *u); /* these will just have to be void for now */
  
  *evalstring=NULL;

  mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",
	   file, file, evalstring) );

  if ( (d_handle = dlopen(file, RTLD_LAZY)) == NULL) {
    mm_log( (1,"DSO_open: dlopen failed: %s.\n",dlerror()) );
    return NULL;
  }

  if ( (*evalstring = (char *)dlsym(d_handle, I_EVALSTR)) == NULL) {
    mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_EVALSTR,dlerror()) );
    return NULL;
  }

  /*

    I'll just leave this thing in here for now if I need it real soon

   mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_SYMBOL_TABLE ));
   if ( (plugin_symtab = dlsym(d_handle, I_SYMBOL_TABLE)) == NULL) {
     mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_SYMBOL_TABLE,dlerror()) );
     return NULL;
   }
  
   mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_UTIL_TABLE ));
    if ( (plugin_utiltab = dlsym(d_handle, I_UTIL_TABLE)) == NULL) {
     mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_UTIL_TABLE,dlerror()) );
     return NULL;
   }

  */

  f = (void(*)(void *s,void *u))dlsym(d_handle, I_INSTALL_TABLES);
  mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_INSTALL_TABLES ));
  if ( (f = (void(*)(void *s,void *u))dlsym(d_handle, I_INSTALL_TABLES)) == NULL) {
    mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_INSTALL_TABLES,dlerror()) );
    return NULL;
  }

  mm_log( (1,"Calling install_tables\n") );
  f(&symbol_table,&i_UTIL_table);
  mm_log( (1,"Call ok.\n") );

  /* (*plugin_symtab)=&symbol_table;
     (*plugin_utiltab)=&i_UTIL_table; */
  
  mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_FUNCTION_LIST ));
  if ( (function_list=(func_ptr *)dlsym(d_handle, I_FUNCTION_LIST)) == NULL) {
    mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_FUNCTION_LIST,dlerror()) );
    return NULL;
  }
  
  if ( (dso_handle=(DSO_handle*)malloc(sizeof(DSO_handle))) == NULL) /* checked 17jul05 tonyc */
    return NULL;
  
  dso_handle->handle=d_handle; /* needed to close again */
  dso_handle->function_list=function_list;
  if ( (dso_handle->filename=(char*)malloc(strlen(file)+1)) == NULL) { /* checked 17jul05 tonyc */
    free(dso_handle); 
    return NULL;
  }
  strcpy(dso_handle->filename,file);

  mm_log( (1,"DSO_open <- %p\n",dso_handle) );
  return (void*)dso_handle;
}

undef_int
DSO_close(void *ptr) {
  DSO_handle *handle;
  mm_log((1,"DSO_close(ptr %p)\n",ptr));
  handle=(DSO_handle*) ptr;
  return !dlclose(handle->handle);
}

#endif
Commit	Line	Data
d8e0c3ba TC	1	#if defined(OS_hpux)
	2	#include <dl.h>
	3	typedef shl_t minthandle_t;
	4	#elif defined(WIN32)
	5	#define WIN32_LEAN_AND_MEAN
	6	#include <windows.h>
	7	typedef HMODULE minthandle_t;
	8	#undef WIN32_LEAN_AND_MEAN
d8e0c3ba TC	9	#else
	10	#include <dlfcn.h>
	11	typedef void *minthandle_t;
	12	#endif
	13
d03fd5a4	14	#include "plug.h"
d8e0c3ba TC	15
	16	struct DSO_handle_tag {
	17	minthandle_t handle;
	18	char *filename;
	19	func_ptr *function_list;
	20	};
	21
92bda632	22	#include "imager.h"
02d1d628	23	#include "dynaload.h"
b33c08f8	24	/* #include "XSUB.h" so we can compile on threaded perls */
92bda632	25	#include "imageri.h"
02d1d628	26
97ac0a96 TC	27	static symbol_table_t symbol_table=
	28	{
	29	i_has_format,
	30	ICL_set_internal,
	31	ICL_info,
d03fd5a4 TC	32	i_img_new,
	33	i_img_empty,
	34	i_img_empty_ch,
97ac0a96 TC	35	i_img_exorcise,
	36	i_img_info,
	37	i_img_setmask,
	38	i_img_getmask,
	39	i_box,
	40	i_line,
	41	i_arc,
	42	i_copyto,
	43	i_copyto_trans,
	44	i_rubthru
	45	};
b6cfd214 TC	46
b6cfd214 TC	47
02d1d628 AMH	48	/*
	49	Dynamic loading works like this:
	50	dynaload opens the shared object and
	51	loads all the functions into an array of functions
	52	it returns a string from the dynamic function that
	53	can be supplied to the parser for evaling.
	54	*/
	55
	56	void
	57	DSO_call(DSO_handle handle,int func_index,HV hv) {
8d14daab TC	58	mm_log((1,"DSO_call(handle %p, func_index %d, hv %p)\n",
8d14daab TC	59	handle, func_index, hv));
02d1d628 AMH	60	(handle->function_list[func_index].iptr)((void*)hv);
	61	}
	62
d8e0c3ba TC	63	func_ptr *
	64	DSO_funclist(DSO_handle *handle) {
	65	return handle->function_list;
	66	}
	67
02d1d628 AMH	68
	69	#if defined( OS_hpux )
	70
	71	void*
	72	DSO_open(char* file,char** evalstring) {
	73	shl_t tt_handle;
	74	void d_handle,plugin_symtab,*plugin_utiltab;
	75	int rc,iptr, (fptr)(int);
	76	func_ptr *function_list;
	77	DSO_handle *dso_handle;
	78	void (f)(void s,void u); / these will just have to be void for now */
	79	int i;
	80
	81	*evalstring=NULL;
	82
	83	mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );
	84
	85	if ( (tt_handle = shl_load(file, BIND_DEFERRED,0L)) == NULL) return NULL;
	86	if ( (shl_findsym(&tt_handle, I_EVALSTR,TYPE_UNDEFINED,(void*)evalstring))) return NULL;
	87
	88	/*
	89	if ( (shl_findsym(&tt_handle, "symbol_table",TYPE_UNDEFINED,(void*)&plugin_symtab))) return NULL;
	90	if ( (shl_findsym(&tt_handle, "util_table",TYPE_UNDEFINED,&plugin_utiltab))) return NULL;
	91	(*plugin_symtab)=&symbol_table;
b33c08f8	92	(*plugin_utiltab)=&i_UTIL_table;
02d1d628 AMH	93	*/
	94
	95	if ( (shl_findsym(&tt_handle, I_INSTALL_TABLES ,TYPE_UNDEFINED, &f ))) return NULL;
	96
	97	mm_log( (1,"Calling install_tables\n") );
b33c08f8	98	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	99	mm_log( (1,"Call ok.\n") );
	100
	101	if ( (shl_findsym(&tt_handle, I_FUNCTION_LIST ,TYPE_UNDEFINED,(func_ptr*)&function_list))) return NULL;
4131e88b TC	102	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	103	return NULL;
02d1d628 AMH	104
	105	dso_handle->handle=tt_handle; /* needed to close again */
	106	dso_handle->function_list=function_list;
4131e88b TC	107	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	108	free(dso_handle); return NULL;
	109	}
02d1d628 AMH	110	strcpy(dso_handle->filename,file);
	111
	112	mm_log((1,"DSO_open <- (0x%X)\n",dso_handle));
	113	return (void*)dso_handle;
	114	}
	115
	116	undef_int
	117	DSO_close(void *ptr) {
	118	DSO_handle handle=(DSO_handle) ptr;
	119	mm_log((1,"DSO_close(ptr 0x%X)\n",ptr));
	120	return !shl_unload((handle->handle));
	121	}
	122
	123	#elif defined(WIN32)
	124
	125	void *
	126	DSO_open(char file, char *evalstring) {
	127	HMODULE d_handle;
	128	func_ptr *function_list;
	129	DSO_handle *dso_handle;
	130
	131	void (f)(void s,void u); / these will just have to be void for now */
	132
8d14daab	133	mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",file,file,evalstring) );
02d1d628 AMH	134
	135	*evalstring = NULL;
	136	if ((d_handle = LoadLibrary(file)) == NULL) {
	137	mm_log((1, "DSO_open: LoadLibrary(%s) failed: %lu\n", file, GetLastError()));
	138	return NULL;
	139	}
	140	if ( (evalstring = (char )GetProcAddress(d_handle, I_EVALSTR)) == NULL) {
	141	mm_log((1,"DSO_open: GetProcAddress didn't fine '%s': %lu\n", I_EVALSTR, GetLastError()));
	142	FreeLibrary(d_handle);
	143	return NULL;
	144	}
	145	if ((f = (void ()(void , void*))GetProcAddress(d_handle, I_INSTALL_TABLES)) == NULL) {
	146	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_INSTALL_TABLES, GetLastError()));
	147	FreeLibrary(d_handle);
	148	return NULL;
	149	}
	150	mm_log((1, "Calling install tables\n"));
b33c08f8	151	f(&symbol_table, &i_UTIL_table);
02d1d628 AMH	152	mm_log((1, "Call ok\n"));
	153
	154	if ( (function_list = (func_ptr *)GetProcAddress(d_handle, I_FUNCTION_LIST)) == NULL) {
	155	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_FUNCTION_LIST, GetLastError()));
	156	FreeLibrary(d_handle);
	157	return NULL;
	158	}
4131e88b	159	if ( (dso_handle = (DSO_handle)malloc(sizeof(DSO_handle))) == NULL) { / checked 17jul05 tonyc */
02d1d628 AMH	160	mm_log( (1, "DSO_Open: out of memory\n") );
	161	FreeLibrary(d_handle);
	162	return NULL;
	163	}
	164	dso_handle->handle=d_handle; /* needed to close again */
	165	dso_handle->function_list=function_list;
4131e88b TC	166	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	167	free(dso_handle);
	168	FreeLibrary(d_handle);
	169	return NULL;
	170	}
02d1d628 AMH	171	strcpy(dso_handle->filename,file);
02d1d628 AMH	172
8d14daab	173	mm_log( (1,"DSO_open <- %p\n",dso_handle) );
02d1d628 AMH	174	return (void*)dso_handle;
	175
	176	}
	177
	178	undef_int
	179	DSO_close(void *ptr) {
	180	DSO_handle handle = (DSO_handle )ptr;
bc0b5da4	181	BOOL result = FreeLibrary(handle->handle);
02d1d628 AMH	182	free(handle->filename);
02d1d628 AMH	183	free(handle);
bc0b5da4 TC	184
bc0b5da4 TC	185	return result;
02d1d628 AMH	186	}
	187
	188	#else
	189
	190	/* OS/2 has no dlclose; Perl doesn't provide one. */
	191	#ifdef __EMX__ /* OS/2 */
	192	int
	193	dlclose(minthandle_t h) {
	194	return DosFreeModule(h) ? -1 : 0;
	195	}
	196	#endif /* __EMX__ */
	197
02d1d628 AMH	198	void*
	199	DSO_open(char* file,char** evalstring) {
	200	void *d_handle;
	201	func_ptr *function_list;
	202	DSO_handle *dso_handle;
	203
	204	void (f)(void s,void u); / these will just have to be void for now */
	205
	206	*evalstring=NULL;
	207
8d14daab TC	208	mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",
8d14daab TC	209	file, file, evalstring) );
02d1d628 AMH	210
	211	if ( (d_handle = dlopen(file, RTLD_LAZY)) == NULL) {
	212	mm_log( (1,"DSO_open: dlopen failed: %s.\n",dlerror()) );
	213	return NULL;
	214	}
	215
	216	if ( (evalstring = (char )dlsym(d_handle, I_EVALSTR)) == NULL) {
	217	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_EVALSTR,dlerror()) );
	218	return NULL;
	219	}
	220
	221	/*
	222
	223	I'll just leave this thing in here for now if I need it real soon
	224
	225	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_SYMBOL_TABLE ));
	226	if ( (plugin_symtab = dlsym(d_handle, I_SYMBOL_TABLE)) == NULL) {
	227	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_SYMBOL_TABLE,dlerror()) );
	228	return NULL;
	229	}
	230
	231	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_UTIL_TABLE ));
	232	if ( (plugin_utiltab = dlsym(d_handle, I_UTIL_TABLE)) == NULL) {
	233	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_UTIL_TABLE,dlerror()) );
	234	return NULL;
	235	}
	236
	237	*/
	238
	239	f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES);
	240	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_INSTALL_TABLES ));
	241	if ( (f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES)) == NULL) {
	242	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_INSTALL_TABLES,dlerror()) );
	243	return NULL;
	244	}
	245
	246	mm_log( (1,"Calling install_tables\n") );
b33c08f8	247	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	248	mm_log( (1,"Call ok.\n") );
	249
	250	/* (*plugin_symtab)=&symbol_table;
b33c08f8	251	(plugin_utiltab)=&i_UTIL_table; /
02d1d628 AMH	252
	253	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_FUNCTION_LIST ));
	254	if ( (function_list=(func_ptr *)dlsym(d_handle, I_FUNCTION_LIST)) == NULL) {
	255	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_FUNCTION_LIST,dlerror()) );
	256	return NULL;
	257	}
	258
4131e88b TC	259	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	260	return NULL;
02d1d628 AMH	261
	262	dso_handle->handle=d_handle; /* needed to close again */
	263	dso_handle->function_list=function_list;
4131e88b TC	264	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	265	free(dso_handle);
	266	return NULL;
	267	}
02d1d628 AMH	268	strcpy(dso_handle->filename,file);
02d1d628 AMH	269
8d14daab	270	mm_log( (1,"DSO_open <- %p\n",dso_handle) );
02d1d628 AMH	271	return (void*)dso_handle;
	272	}
	273
	274	undef_int
	275	DSO_close(void *ptr) {
	276	DSO_handle *handle;
8d14daab	277	mm_log((1,"DSO_close(ptr %p)\n",ptr));
02d1d628 AMH	278	handle=(DSO_handle*) ptr;
	279	return !dlclose(handle->handle);
	280	}
	281
	282	#endif
	283