[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 0x%X, func_index %d, hv 0x%X)\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' (0x%08X), evalstring 0x%08X)\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 <- 0x%X\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' (0x%08X), evalstring 0x%08X)\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 <- 0x%X\n",dso_handle) );
  return (void*)dso_handle;
}

undef_int
DSO_close(void *ptr) {
  DSO_handle *handle;
  mm_log((1,"DSO_close(ptr 0x%X)\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
	14	#include "plug.h"
	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,
	32	i_img_new,
	33	i_img_empty,
	34	i_img_empty_ch,
	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) {
	58	mm_log((1,"DSO_call(handle 0x%X, func_index %d, hv 0x%X)\n",handle,func_index,hv));
	59	(handle->function_list[func_index].iptr)((void*)hv);
	60	}
	61
d8e0c3ba TC	62	func_ptr *
	63	DSO_funclist(DSO_handle *handle) {
	64	return handle->function_list;
	65	}
	66
02d1d628 AMH	67
	68	#if defined( OS_hpux )
	69
	70	void*
	71	DSO_open(char* file,char** evalstring) {
	72	shl_t tt_handle;
	73	void d_handle,plugin_symtab,*plugin_utiltab;
	74	int rc,iptr, (fptr)(int);
	75	func_ptr *function_list;
	76	DSO_handle *dso_handle;
	77	void (f)(void s,void u); / these will just have to be void for now */
	78	int i;
	79
	80	*evalstring=NULL;
	81
	82	mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );
	83
	84	if ( (tt_handle = shl_load(file, BIND_DEFERRED,0L)) == NULL) return NULL;
	85	if ( (shl_findsym(&tt_handle, I_EVALSTR,TYPE_UNDEFINED,(void*)evalstring))) return NULL;
	86
	87	/*
	88	if ( (shl_findsym(&tt_handle, "symbol_table",TYPE_UNDEFINED,(void*)&plugin_symtab))) return NULL;
	89	if ( (shl_findsym(&tt_handle, "util_table",TYPE_UNDEFINED,&plugin_utiltab))) return NULL;
	90	(*plugin_symtab)=&symbol_table;
b33c08f8	91	(*plugin_utiltab)=&i_UTIL_table;
02d1d628 AMH	92	*/
	93
	94	if ( (shl_findsym(&tt_handle, I_INSTALL_TABLES ,TYPE_UNDEFINED, &f ))) return NULL;
	95
	96	mm_log( (1,"Calling install_tables\n") );
b33c08f8	97	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	98	mm_log( (1,"Call ok.\n") );
	99
	100	if ( (shl_findsym(&tt_handle, I_FUNCTION_LIST ,TYPE_UNDEFINED,(func_ptr*)&function_list))) return NULL;
4131e88b TC	101	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	102	return NULL;
02d1d628 AMH	103
	104	dso_handle->handle=tt_handle; /* needed to close again */
	105	dso_handle->function_list=function_list;
4131e88b TC	106	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	107	free(dso_handle); return NULL;
	108	}
02d1d628 AMH	109	strcpy(dso_handle->filename,file);
	110
	111	mm_log((1,"DSO_open <- (0x%X)\n",dso_handle));
	112	return (void*)dso_handle;
	113	}
	114
	115	undef_int
	116	DSO_close(void *ptr) {
	117	DSO_handle handle=(DSO_handle) ptr;
	118	mm_log((1,"DSO_close(ptr 0x%X)\n",ptr));
	119	return !shl_unload((handle->handle));
	120	}
	121
	122	#elif defined(WIN32)
	123
	124	void *
	125	DSO_open(char file, char *evalstring) {
	126	HMODULE d_handle;
	127	func_ptr *function_list;
	128	DSO_handle *dso_handle;
	129
	130	void (f)(void s,void u); / these will just have to be void for now */
	131
	132	mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );
	133
	134	*evalstring = NULL;
	135	if ((d_handle = LoadLibrary(file)) == NULL) {
	136	mm_log((1, "DSO_open: LoadLibrary(%s) failed: %lu\n", file, GetLastError()));
	137	return NULL;
	138	}
	139	if ( (evalstring = (char )GetProcAddress(d_handle, I_EVALSTR)) == NULL) {
	140	mm_log((1,"DSO_open: GetProcAddress didn't fine '%s': %lu\n", I_EVALSTR, GetLastError()));
	141	FreeLibrary(d_handle);
	142	return NULL;
	143	}
	144	if ((f = (void ()(void , void*))GetProcAddress(d_handle, I_INSTALL_TABLES)) == NULL) {
	145	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_INSTALL_TABLES, GetLastError()));
	146	FreeLibrary(d_handle);
	147	return NULL;
	148	}
	149	mm_log((1, "Calling install tables\n"));
b33c08f8	150	f(&symbol_table, &i_UTIL_table);
02d1d628 AMH	151	mm_log((1, "Call ok\n"));
	152
	153	if ( (function_list = (func_ptr *)GetProcAddress(d_handle, I_FUNCTION_LIST)) == NULL) {
	154	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_FUNCTION_LIST, GetLastError()));
	155	FreeLibrary(d_handle);
	156	return NULL;
	157	}
4131e88b	158	if ( (dso_handle = (DSO_handle)malloc(sizeof(DSO_handle))) == NULL) { / checked 17jul05 tonyc */
02d1d628 AMH	159	mm_log( (1, "DSO_Open: out of memory\n") );
	160	FreeLibrary(d_handle);
	161	return NULL;
	162	}
	163	dso_handle->handle=d_handle; /* needed to close again */
	164	dso_handle->function_list=function_list;
4131e88b TC	165	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	166	free(dso_handle);
	167	FreeLibrary(d_handle);
	168	return NULL;
	169	}
02d1d628 AMH	170	strcpy(dso_handle->filename,file);
	171
	172	mm_log( (1,"DSO_open <- 0x%X\n",dso_handle) );
	173	return (void*)dso_handle;
	174
	175	}
	176
	177	undef_int
	178	DSO_close(void *ptr) {
	179	DSO_handle handle = (DSO_handle )ptr;
bc0b5da4	180	BOOL result = FreeLibrary(handle->handle);
02d1d628 AMH	181	free(handle->filename);
02d1d628 AMH	182	free(handle);
bc0b5da4 TC	183
bc0b5da4 TC	184	return result;
02d1d628 AMH	185	}
	186
	187	#else
	188
	189	/* OS/2 has no dlclose; Perl doesn't provide one. */
	190	#ifdef __EMX__ /* OS/2 */
	191	int
	192	dlclose(minthandle_t h) {
	193	return DosFreeModule(h) ? -1 : 0;
	194	}
	195	#endif /* __EMX__ */
	196
02d1d628 AMH	197	void*
	198	DSO_open(char* file,char** evalstring) {
	199	void *d_handle;
	200	func_ptr *function_list;
	201	DSO_handle *dso_handle;
	202
	203	void (f)(void s,void u); / these will just have to be void for now */
	204
	205	*evalstring=NULL;
	206
	207	mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );
	208
	209	if ( (d_handle = dlopen(file, RTLD_LAZY)) == NULL) {
	210	mm_log( (1,"DSO_open: dlopen failed: %s.\n",dlerror()) );
	211	return NULL;
	212	}
	213
	214	if ( (evalstring = (char )dlsym(d_handle, I_EVALSTR)) == NULL) {
	215	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_EVALSTR,dlerror()) );
	216	return NULL;
	217	}
	218
	219	/*
	220
	221	I'll just leave this thing in here for now if I need it real soon
	222
	223	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_SYMBOL_TABLE ));
	224	if ( (plugin_symtab = dlsym(d_handle, I_SYMBOL_TABLE)) == NULL) {
	225	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_SYMBOL_TABLE,dlerror()) );
	226	return NULL;
	227	}
	228
	229	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_UTIL_TABLE ));
	230	if ( (plugin_utiltab = dlsym(d_handle, I_UTIL_TABLE)) == NULL) {
	231	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_UTIL_TABLE,dlerror()) );
	232	return NULL;
	233	}
	234
	235	*/
	236
	237	f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES);
	238	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_INSTALL_TABLES ));
	239	if ( (f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES)) == NULL) {
	240	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_INSTALL_TABLES,dlerror()) );
	241	return NULL;
	242	}
	243
	244	mm_log( (1,"Calling install_tables\n") );
b33c08f8	245	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	246	mm_log( (1,"Call ok.\n") );
	247
	248	/* (*plugin_symtab)=&symbol_table;
b33c08f8	249	(plugin_utiltab)=&i_UTIL_table; /
02d1d628 AMH	250
	251	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_FUNCTION_LIST ));
	252	if ( (function_list=(func_ptr *)dlsym(d_handle, I_FUNCTION_LIST)) == NULL) {
	253	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_FUNCTION_LIST,dlerror()) );
	254	return NULL;
	255	}
	256
4131e88b TC	257	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	258	return NULL;
02d1d628 AMH	259
	260	dso_handle->handle=d_handle; /* needed to close again */
	261	dso_handle->function_list=function_list;
4131e88b TC	262	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	263	free(dso_handle);
	264	return NULL;
	265	}
02d1d628 AMH	266	strcpy(dso_handle->filename,file);
	267
	268	mm_log( (1,"DSO_open <- 0x%X\n",dso_handle) );
	269	return (void*)dso_handle;
	270	}
	271
	272	undef_int
	273	DSO_close(void *ptr) {
	274	DSO_handle *handle;
	275	mm_log((1,"DSO_close(ptr 0x%X)\n",ptr));
	276	handle=(DSO_handle*) ptr;
	277	return !dlclose(handle->handle);
	278	}
	279
	280	#endif
	281