[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 "ext.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 im_context_t
do_get_context(void) {
  return im_get_context();
}

static symbol_table_t symbol_table=
  {
    i_has_format,
    ICL_set_internal,
    ICL_info,
    do_get_context,
    im_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
696cb85d	14	#include "ext.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
696cb85d TC	27	static im_context_t
	28	do_get_context(void) {
	29	return im_get_context();
	30	}
	31
97ac0a96 TC	32	static symbol_table_t symbol_table=
	33	{
	34	i_has_format,
	35	ICL_set_internal,
	36	ICL_info,
696cb85d	37	do_get_context,
696cb85d	38	im_img_empty_ch,
97ac0a96 TC	39	i_img_exorcise,
	40	i_img_info,
	41	i_img_setmask,
	42	i_img_getmask,
	43	i_box,
	44	i_line,
	45	i_arc,
	46	i_copyto,
	47	i_copyto_trans,
	48	i_rubthru
	49	};
b6cfd214 TC	50
b6cfd214 TC	51
02d1d628 AMH	52	/*
	53	Dynamic loading works like this:
	54	dynaload opens the shared object and
	55	loads all the functions into an array of functions
	56	it returns a string from the dynamic function that
	57	can be supplied to the parser for evaling.
	58	*/
	59
	60	void
	61	DSO_call(DSO_handle handle,int func_index,HV hv) {
8d14daab TC	62	mm_log((1,"DSO_call(handle %p, func_index %d, hv %p)\n",
8d14daab TC	63	handle, func_index, hv));
02d1d628 AMH	64	(handle->function_list[func_index].iptr)((void*)hv);
	65	}
	66
d8e0c3ba TC	67	func_ptr *
	68	DSO_funclist(DSO_handle *handle) {
	69	return handle->function_list;
	70	}
	71
02d1d628 AMH	72
	73	#if defined( OS_hpux )
	74
	75	void*
	76	DSO_open(char* file,char** evalstring) {
	77	shl_t tt_handle;
	78	void d_handle,plugin_symtab,*plugin_utiltab;
	79	int rc,iptr, (fptr)(int);
	80	func_ptr *function_list;
	81	DSO_handle *dso_handle;
	82	void (f)(void s,void u); / these will just have to be void for now */
	83	int i;
	84
	85	*evalstring=NULL;
	86
	87	mm_log( (1,"DSO_open(file '%s' (0x%08X), evalstring 0x%08X)\n",file,file,evalstring) );
	88
	89	if ( (tt_handle = shl_load(file, BIND_DEFERRED,0L)) == NULL) return NULL;
	90	if ( (shl_findsym(&tt_handle, I_EVALSTR,TYPE_UNDEFINED,(void*)evalstring))) return NULL;
	91
	92	/*
	93	if ( (shl_findsym(&tt_handle, "symbol_table",TYPE_UNDEFINED,(void*)&plugin_symtab))) return NULL;
	94	if ( (shl_findsym(&tt_handle, "util_table",TYPE_UNDEFINED,&plugin_utiltab))) return NULL;
	95	(*plugin_symtab)=&symbol_table;
b33c08f8	96	(*plugin_utiltab)=&i_UTIL_table;
02d1d628 AMH	97	*/
	98
	99	if ( (shl_findsym(&tt_handle, I_INSTALL_TABLES ,TYPE_UNDEFINED, &f ))) return NULL;
	100
	101	mm_log( (1,"Calling install_tables\n") );
b33c08f8	102	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	103	mm_log( (1,"Call ok.\n") );
	104
	105	if ( (shl_findsym(&tt_handle, I_FUNCTION_LIST ,TYPE_UNDEFINED,(func_ptr*)&function_list))) return NULL;
4131e88b TC	106	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	107	return NULL;
02d1d628 AMH	108
	109	dso_handle->handle=tt_handle; /* needed to close again */
	110	dso_handle->function_list=function_list;
4131e88b TC	111	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	112	free(dso_handle); return NULL;
	113	}
02d1d628 AMH	114	strcpy(dso_handle->filename,file);
	115
	116	mm_log((1,"DSO_open <- (0x%X)\n",dso_handle));
	117	return (void*)dso_handle;
	118	}
	119
	120	undef_int
	121	DSO_close(void *ptr) {
	122	DSO_handle handle=(DSO_handle) ptr;
	123	mm_log((1,"DSO_close(ptr 0x%X)\n",ptr));
	124	return !shl_unload((handle->handle));
	125	}
	126
	127	#elif defined(WIN32)
	128
	129	void *
	130	DSO_open(char file, char *evalstring) {
	131	HMODULE d_handle;
	132	func_ptr *function_list;
	133	DSO_handle *dso_handle;
	134
	135	void (f)(void s,void u); / these will just have to be void for now */
	136
8d14daab	137	mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",file,file,evalstring) );
02d1d628 AMH	138
	139	*evalstring = NULL;
	140	if ((d_handle = LoadLibrary(file)) == NULL) {
	141	mm_log((1, "DSO_open: LoadLibrary(%s) failed: %lu\n", file, GetLastError()));
	142	return NULL;
	143	}
	144	if ( (evalstring = (char )GetProcAddress(d_handle, I_EVALSTR)) == NULL) {
	145	mm_log((1,"DSO_open: GetProcAddress didn't fine '%s': %lu\n", I_EVALSTR, GetLastError()));
	146	FreeLibrary(d_handle);
	147	return NULL;
	148	}
	149	if ((f = (void ()(void , void*))GetProcAddress(d_handle, I_INSTALL_TABLES)) == NULL) {
	150	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_INSTALL_TABLES, GetLastError()));
	151	FreeLibrary(d_handle);
	152	return NULL;
	153	}
	154	mm_log((1, "Calling install tables\n"));
b33c08f8	155	f(&symbol_table, &i_UTIL_table);
02d1d628 AMH	156	mm_log((1, "Call ok\n"));
	157
	158	if ( (function_list = (func_ptr *)GetProcAddress(d_handle, I_FUNCTION_LIST)) == NULL) {
	159	mm_log((1, "DSO_open: GetProcAddress didn't find '%s': %lu\n", I_FUNCTION_LIST, GetLastError()));
	160	FreeLibrary(d_handle);
	161	return NULL;
	162	}
4131e88b	163	if ( (dso_handle = (DSO_handle)malloc(sizeof(DSO_handle))) == NULL) { / checked 17jul05 tonyc */
02d1d628 AMH	164	mm_log( (1, "DSO_Open: out of memory\n") );
	165	FreeLibrary(d_handle);
	166	return NULL;
	167	}
	168	dso_handle->handle=d_handle; /* needed to close again */
	169	dso_handle->function_list=function_list;
4131e88b TC	170	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	171	free(dso_handle);
	172	FreeLibrary(d_handle);
	173	return NULL;
	174	}
02d1d628 AMH	175	strcpy(dso_handle->filename,file);
02d1d628 AMH	176
8d14daab	177	mm_log( (1,"DSO_open <- %p\n",dso_handle) );
02d1d628 AMH	178	return (void*)dso_handle;
	179
	180	}
	181
	182	undef_int
	183	DSO_close(void *ptr) {
	184	DSO_handle handle = (DSO_handle )ptr;
bc0b5da4	185	BOOL result = FreeLibrary(handle->handle);
02d1d628 AMH	186	free(handle->filename);
02d1d628 AMH	187	free(handle);
bc0b5da4 TC	188
bc0b5da4 TC	189	return result;
02d1d628 AMH	190	}
	191
	192	#else
	193
	194	/* OS/2 has no dlclose; Perl doesn't provide one. */
	195	#ifdef __EMX__ /* OS/2 */
	196	int
	197	dlclose(minthandle_t h) {
	198	return DosFreeModule(h) ? -1 : 0;
	199	}
	200	#endif /* __EMX__ */
	201
02d1d628 AMH	202	void*
	203	DSO_open(char* file,char** evalstring) {
	204	void *d_handle;
	205	func_ptr *function_list;
	206	DSO_handle *dso_handle;
	207
	208	void (f)(void s,void u); / these will just have to be void for now */
	209
	210	*evalstring=NULL;
	211
8d14daab TC	212	mm_log( (1,"DSO_open(file '%s' (%p), evalstring %p)\n",
8d14daab TC	213	file, file, evalstring) );
02d1d628 AMH	214
	215	if ( (d_handle = dlopen(file, RTLD_LAZY)) == NULL) {
	216	mm_log( (1,"DSO_open: dlopen failed: %s.\n",dlerror()) );
	217	return NULL;
	218	}
	219
	220	if ( (evalstring = (char )dlsym(d_handle, I_EVALSTR)) == NULL) {
	221	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_EVALSTR,dlerror()) );
	222	return NULL;
	223	}
	224
	225	/*
	226
	227	I'll just leave this thing in here for now if I need it real soon
	228
	229	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_SYMBOL_TABLE ));
	230	if ( (plugin_symtab = dlsym(d_handle, I_SYMBOL_TABLE)) == NULL) {
	231	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_SYMBOL_TABLE,dlerror()) );
	232	return NULL;
	233	}
	234
	235	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_UTIL_TABLE ));
	236	if ( (plugin_utiltab = dlsym(d_handle, I_UTIL_TABLE)) == NULL) {
	237	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_UTIL_TABLE,dlerror()) );
	238	return NULL;
	239	}
	240
	241	*/
	242
	243	f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES);
	244	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_INSTALL_TABLES ));
	245	if ( (f = (void()(void s,void *u))dlsym(d_handle, I_INSTALL_TABLES)) == NULL) {
	246	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_INSTALL_TABLES,dlerror()) );
	247	return NULL;
	248	}
	249
	250	mm_log( (1,"Calling install_tables\n") );
b33c08f8	251	f(&symbol_table,&i_UTIL_table);
02d1d628 AMH	252	mm_log( (1,"Call ok.\n") );
	253
	254	/* (*plugin_symtab)=&symbol_table;
b33c08f8	255	(plugin_utiltab)=&i_UTIL_table; /
02d1d628 AMH	256
	257	mm_log( (1,"DSO_open: going to dlsym '%s'\n", I_FUNCTION_LIST ));
	258	if ( (function_list=(func_ptr *)dlsym(d_handle, I_FUNCTION_LIST)) == NULL) {
	259	mm_log( (1,"DSO_open: dlsym didn't find '%s': %s.\n",I_FUNCTION_LIST,dlerror()) );
	260	return NULL;
	261	}
	262
4131e88b TC	263	if ( (dso_handle=(DSO_handle)malloc(sizeof(DSO_handle))) == NULL) / checked 17jul05 tonyc */
4131e88b TC	264	return NULL;
02d1d628 AMH	265
	266	dso_handle->handle=d_handle; /* needed to close again */
	267	dso_handle->function_list=function_list;
4131e88b TC	268	if ( (dso_handle->filename=(char)malloc(strlen(file)+1)) == NULL) { / checked 17jul05 tonyc */
	269	free(dso_handle);
	270	return NULL;
	271	}
02d1d628 AMH	272	strcpy(dso_handle->filename,file);
02d1d628 AMH	273
8d14daab	274	mm_log( (1,"DSO_open <- %p\n",dso_handle) );
02d1d628 AMH	275	return (void*)dso_handle;
	276	}
	277
	278	undef_int
	279	DSO_close(void *ptr) {
	280	DSO_handle *handle;
8d14daab	281	mm_log((1,"DSO_close(ptr %p)\n",ptr));
02d1d628 AMH	282	handle=(DSO_handle*) ptr;
	283	return !dlclose(handle->handle);
	284	}
	285
	286	#endif
	287