/* dso_vms.c *//* Written by Richard Levitte (richard@levitte.org) for the OpenSSL * project 2000. *//* ==================================================================== * Copyright (c) 2000 The OpenSSL Project.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer.  * * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in *    the documentation and/or other materials provided with the *    distribution. * * 3. All advertising materials mentioning features or use of this *    software must display the following acknowledgment: *    "This product includes software developed by the OpenSSL Project *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to *    endorse or promote products derived from this software without *    prior written permission. For written permission, please contact *    licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" *    nor may "OpenSSL" appear in their names without prior written *    permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following *    acknowledgment: *    "This product includes software developed by the OpenSSL Project *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com).  This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */#include <stdio.h>#include <string.h>#include <errno.h>#include "cryptlib.h"#include <openssl/dso.h>#ifdef OPENSSL_SYS_VMS#pragma message disable DOLLARID#include <lib$routines.h>#include <stsdef.h>#include <descrip.h>#include <starlet.h>#endif#ifndef OPENSSL_SYS_VMSDSO_METHOD *DSO_METHOD_vms(void)	{	return NULL;	}#else#pragma message disable DOLLARIDstatic int vms_load(DSO *dso);static int vms_unload(DSO *dso);static void *vms_bind_var(DSO *dso, const char *symname);static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);#if 0static int vms_unbind_var(DSO *dso, char *symname, void *symptr);static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);static int vms_init(DSO *dso);static int vms_finish(DSO *dso);static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);#endifstatic char *vms_name_converter(DSO *dso, const char *filename);static DSO_METHOD dso_meth_vms = {	"OpenSSL 'VMS' shared library method",	vms_load,	NULL, /* unload */	vms_bind_var,	vms_bind_func,/* For now, "unbind" doesn't exist */#if 0	NULL, /* unbind_var */	NULL, /* unbind_func */#endif	NULL, /* ctrl */	vms_name_converter,	NULL, /* init */	NULL  /* finish */	};/* On VMS, the only "handle" is the file name.  LIB$FIND_IMAGE_SYMBOL depends * on the reference to the file name being the same for all calls regarding * one shared image, so we'll just store it in an instance of the following * structure and put a pointer to that instance in the meth_data stack. */typedef struct dso_internal_st	{	/* This should contain the name only, no directory,	 * no extension, nothing but a name. */	struct dsc$descriptor_s filename_dsc;	char filename[FILENAME_MAX+1];	/* This contains whatever is not in filename, if needed.	 * Normally not defined. */	struct dsc$descriptor_s imagename_dsc;	char imagename[FILENAME_MAX+1];	} DSO_VMS_INTERNAL;DSO_METHOD *DSO_METHOD_vms(void)	{	return(&dso_meth_vms);	}static int vms_load(DSO *dso)	{	void *ptr = NULL;	/* See applicable comments in dso_dl.c */	char *filename = DSO_convert_filename(dso, NULL);	DSO_VMS_INTERNAL *p;	const char *sp1, *sp2;	/* Search result */	if(filename == NULL)		{		DSOerr(DSO_F_DLFCN_LOAD,DSO_R_NO_FILENAME);		goto err;		}	/* A file specification may look like this:	 *	 *	node::dev:[dir-spec]name.type;ver	 *	 * or (for compatibility with TOPS-20):	 *	 *	node::dev:<dir-spec>name.type;ver	 *	 * and the dir-spec uses '.' as separator.  Also, a dir-spec	 * may consist of several parts, with mixed use of [] and <>:	 *	 *	[dir1.]<dir2>	 *	 * We need to split the file specification into the name and	 * the rest (both before and after the name itself).	 */	/* Start with trying to find the end of a dir-spec, and save the	   position of the byte after in sp1 */	sp1 = strrchr(filename, ']');	sp2 = strrchr(filename, '>');	if (sp1 == NULL) sp1 = sp2;	if (sp2 != NULL && sp2 > sp1) sp1 = sp2;	if (sp1 == NULL) sp1 = strrchr(filename, ':');	if (sp1 == NULL)		sp1 = filename;	else		sp1++;		/* The byte after the found character */	/* Now, let's see if there's a type, and save the position in sp2 */	sp2 = strchr(sp1, '.');	/* If we found it, that's where we'll cut.  Otherwise, look for a	   version number and save the position in sp2 */	if (sp2 == NULL) sp2 = strchr(sp1, ';');	/* If there was still nothing to find, set sp2 to point at the end of	   the string */	if (sp2 == NULL) sp2 = sp1 + strlen(sp1);	/* Check that we won't get buffer overflows */	if (sp2 - sp1 > FILENAME_MAX		|| (sp1 - filename) + strlen(sp2) > FILENAME_MAX)		{		DSOerr(DSO_F_VMS_LOAD,DSO_R_FILENAME_TOO_BIG);		goto err;		}	p = (DSO_VMS_INTERNAL *)OPENSSL_malloc(sizeof(DSO_VMS_INTERNAL));	if(p == NULL)		{		DSOerr(DSO_F_VMS_LOAD,ERR_R_MALLOC_FAILURE);		goto err;		}	strncpy(p->filename, sp1, sp2-sp1);	p->filename[sp2-sp1] = '\0';	strncpy(p->imagename, filename, sp1-filename);	p->imagename[sp1-filename] = '\0';	strcat(p->imagename, sp2);	p->filename_dsc.dsc$w_length = strlen(p->filename);	p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;	p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;	p->filename_dsc.dsc$a_pointer = p->filename;	p->imagename_dsc.dsc$w_length = strlen(p->imagename);	p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;	p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;	p->imagename_dsc.dsc$a_pointer = p->imagename;	if(!sk_push(dso->meth_data, (char *)p))		{		DSOerr(DSO_F_VMS_LOAD,DSO_R_STACK_ERROR);		goto err;		}	/* Success (for now, we lie.  We actually do not know...) */	dso->loaded_filename = filename;	return(1);err:	/* Cleanup! */	if(p != NULL)		OPENSSL_free(p);	if(filename != NULL)		OPENSSL_free(filename);	return(0);	}/* Note that this doesn't actually unload the shared image, as there is no * such thing in VMS.  Next time it get loaded again, a new copy will * actually be loaded. */static int vms_unload(DSO *dso)	{	DSO_VMS_INTERNAL *p;	if(dso == NULL)		{		DSOerr(DSO_F_VMS_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);		return(0);		}	if(sk_num(dso->meth_data) < 1)		return(1);	p = (DSO_VMS_INTERNAL *)sk_pop(dso->meth_data);	if(p == NULL)		{		DSOerr(DSO_F_VMS_UNLOAD,DSO_R_NULL_HANDLE);		return(0);		}	/* Cleanup */	OPENSSL_free(p);	return(1);	}/* We must do this in a separate function because of the way the exception   handler works (it makes this function return */static int do_find_symbol(DSO_VMS_INTERNAL *ptr,	struct dsc$descriptor_s *symname_dsc, void **sym,	unsigned long flags)	{	/* Make sure that signals are caught and returned instead of	   aborting the program.  The exception handler gets unestablished	   automatically on return from this function.  */	lib$establish(lib$sig_to_ret);	if(ptr->imagename_dsc.dsc$w_length)		return lib$find_image_symbol(&ptr->filename_dsc,			symname_dsc, sym,			&ptr->imagename_dsc, flags);	else		return lib$find_image_symbol(&ptr->filename_dsc,			symname_dsc, sym,			0, flags);	}void vms_bind_sym(DSO *dso, const char *symname, void **sym)	{	DSO_VMS_INTERNAL *ptr;	int status;#if 0	int flags = (1<<4); /* LIB$M_FIS_MIXEDCASE, but this symbol isn't                               defined in VMS older than 7.0 or so */#else	int flags = 0;#endif	struct dsc$descriptor_s symname_dsc;	*sym = NULL;	symname_dsc.dsc$w_length = strlen(symname);	symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;	symname_dsc.dsc$b_class = DSC$K_CLASS_S;	symname_dsc.dsc$a_pointer = (char *)symname; /* The cast is needed */	if((dso == NULL) || (symname == NULL))		{		DSOerr(DSO_F_VMS_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);		return;		}	if(sk_num(dso->meth_data) < 1)		{		DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_STACK_ERROR);		return;		}	ptr = (DSO_VMS_INTERNAL *)sk_value(dso->meth_data,		sk_num(dso->meth_data) - 1);	if(ptr == NULL)		{		DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_NULL_HANDLE);		return;		}	if(dso->flags & DSO_FLAG_UPCASE_SYMBOL) flags = 0;	status = do_find_symbol(ptr, &symname_dsc, sym, flags);	if(!$VMS_STATUS_SUCCESS(status))		{		unsigned short length;		char errstring[257];		struct dsc$descriptor_s errstring_dsc;		errstring_dsc.dsc$w_length = sizeof(errstring);		errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;		errstring_dsc.dsc$b_class = DSC$K_CLASS_S;		errstring_dsc.dsc$a_pointer = errstring;		*sym = NULL;		status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);		if (!$VMS_STATUS_SUCCESS(status))			lib$signal(status); /* This is really bad.  Abort!  */		else			{			errstring[length] = '\0';			DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_SYM_FAILURE);			if (ptr->imagename_dsc.dsc$w_length)				ERR_add_error_data(9,					"Symbol ", symname,					" in ", ptr->filename,					" (", ptr->imagename, ")",					": ", errstring);			else				ERR_add_error_data(6,					"Symbol ", symname,					" in ", ptr->filename,					": ", errstring);			}		return;		}	return;	}static void *vms_bind_var(DSO *dso, const char *symname)	{	void *sym = 0;	vms_bind_sym(dso, symname, &sym);	return sym;	}static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)	{	DSO_FUNC_TYPE sym = 0;	vms_bind_sym(dso, symname, (void **)&sym);	return sym;	}static char *vms_name_converter(DSO *dso, const char *filename)	{        int len = strlen(filename);        char *not_translated = OPENSSL_malloc(len+1);        strcpy(not_translated,filename);	return(not_translated);	}#endif /* OPENSSL_SYS_VMS */