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openssl/crypto/dso/dso_vms.c
Richard Levitte 828d04afe4 VMS: update the properties of symbol search 
In this OpenSSL version, we deliver engines with lower case symbol
names.  The DSO symbol finder must be updated to allow for mixed case
symbols or it won't fine them.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-03-23 19:58:12 +01:00

516 lines
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/*
* 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 "dso_locl.h"
#ifdef OPENSSL_SYS_VMS
# pragma message disable DOLLARID
# include <errno.h>
# include <rms.h>
# include <lib$routines.h>
# include <libfisdef.h>
# include <stsdef.h>
# include <descrip.h>
# include <starlet.h>
# include "../vms_rms.h"
/* Some compiler options may mask the declaration of "_malloc32". */
# if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
# pragma pointer_size 32
void *_malloc32(__size_t);
# pragma pointer_size restore
# endif /* __INITIAL_POINTER_SIZE == 64 */
# endif /* __INITIAL_POINTER_SIZE && defined
* _ANSI_C_SOURCE */
# pragma message disable DOLLARID
static int vms_load(DSO *dso);
static int vms_unload(DSO *dso);
static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
static char *vms_name_converter(DSO *dso, const char *filename);
static char *vms_merger(DSO *dso, const char *filespec1,
const char *filespec2);
static DSO_METHOD dso_meth_vms = {
"OpenSSL 'VMS' shared library method",
vms_load,
NULL, /* unload */
vms_bind_func,
NULL, /* ctrl */
vms_name_converter,
vms_merger,
NULL, /* init */
NULL /* finish */
};
/*
* On VMS, the only "handle" is the file name. LIB$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$descriptor_s filename_dsc;
char filename[NAMX_MAXRSS + 1];
/*
* This contains whatever is not in filename, if needed. Normally not
* defined.
*/
struct dsc$descriptor_s imagename_dsc;
char imagename[NAMX_MAXRSS + 1];
} DSO_VMS_INTERNAL;
DSO_METHOD *DSO_METHOD_openssl(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);
/* Ensure 32-bit pointer for "p", and appropriate malloc() function. */
# if __INITIAL_POINTER_SIZE == 64
# define DSO_MALLOC _malloc32
# pragma pointer_size save
# pragma pointer_size 32
# else /* __INITIAL_POINTER_SIZE == 64 */
# define DSO_MALLOC OPENSSL_malloc
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
DSO_VMS_INTERNAL *p = NULL;
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size restore
# endif /* __INITIAL_POINTER_SIZE == 64 */
const char *sp1, *sp2; /* Search result */
const char *ext = NULL; /* possible extension to add */
if (filename == NULL) {
DSOerr(DSO_F_VMS_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 there is a period and the next character is a semi-colon,
* we need to add an extension
*/
if (sp2 != NULL && sp2[1] == ';')
ext = ".EXE";
/*
* 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, ';');
ext = ".EXE";
}
/*
* 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_MALLOC(sizeof(*p));
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';
if (ext) {
strcat(p->imagename, ext);
if (*sp2 == '.')
sp2++;
}
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_void_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! */
OPENSSL_free(p);
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_void_num(dso->meth_data) < 1)
return (1);
p = (DSO_VMS_INTERNAL *)sk_void_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;
# ifdef LIB$M_FIS_MIXEDCASE
int flags = LIB$M_FIS_MIXEDCASE;
# else
int flags = (1 << 4);
# endif
struct dsc$descriptor_s symname_dsc;
/* Arrange 32-bit pointer to (copied) string storage, if needed. */
# if __INITIAL_POINTER_SIZE == 64
# define SYMNAME symname_32p
# pragma pointer_size save
# pragma pointer_size 32
char *symname_32p;
# pragma pointer_size restore
char symname_32[NAMX_MAXRSS + 1];
# else /* __INITIAL_POINTER_SIZE == 64 */
# define SYMNAME ((char *) symname)
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
*sym = NULL;
if ((dso == NULL) || (symname == NULL)) {
DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER);
return;
}
# if __INITIAL_POINTER_SIZE == 64
/* Copy the symbol name to storage with a 32-bit pointer. */
symname_32p = symname_32;
strcpy(symname_32p, symname);
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
symname_dsc.dsc$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$a_pointer = SYMNAME;
if (sk_void_num(dso->meth_data) < 1) {
DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR);
return;
}
ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
sk_void_num(dso->meth_data) - 1);
if (ptr == NULL) {
DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE);
return;
}
if (dso->flags & DSO_FLAG_UPCASE_SYMBOL)
flags = 0;
status = do_find_symbol(ptr, &symname_dsc, sym, flags);
if (!$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_SYM, DSO_R_SYM_FAILURE);
if (ptr->imagename_dsc.dsc$w_length)
ERR_add_error_data(9,
"Symbol ", symname,
" in ", ptr->filename,
" (", ptr->imagename, ")",
": ", errstring);
else
ERR_add_error_data(6,
"Symbol ", symname,
" in ", ptr->filename, ": ", errstring);
}
return;
}
return;
}
static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
{
DSO_FUNC_TYPE sym = 0;
vms_bind_sym(dso, symname, (void **)&sym);
return sym;
}
static char *vms_merger(DSO *dso, const char *filespec1,
const char *filespec2)
{
int status;
int filespec1len, filespec2len;
struct FAB fab;
struct NAMX_STRUCT nam;
char esa[NAMX_MAXRSS + 1];
char *merged;
/* Arrange 32-bit pointer to (copied) string storage, if needed. */
# if __INITIAL_POINTER_SIZE == 64
# define FILESPEC1 filespec1_32p;
# define FILESPEC2 filespec2_32p;
# pragma pointer_size save
# pragma pointer_size 32
char *filespec1_32p;
char *filespec2_32p;
# pragma pointer_size restore
char filespec1_32[NAMX_MAXRSS + 1];
char filespec2_32[NAMX_MAXRSS + 1];
# else /* __INITIAL_POINTER_SIZE == 64 */
# define FILESPEC1 ((char *) filespec1)
# define FILESPEC2 ((char *) filespec2)
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
if (!filespec1)
filespec1 = "";
if (!filespec2)
filespec2 = "";
filespec1len = strlen(filespec1);
filespec2len = strlen(filespec2);
# if __INITIAL_POINTER_SIZE == 64
/* Copy the file names to storage with a 32-bit pointer. */
filespec1_32p = filespec1_32;
filespec2_32p = filespec2_32;
strcpy(filespec1_32p, filespec1);
strcpy(filespec2_32p, filespec2);
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
fab = cc$rms_fab;
nam = CC_RMS_NAMX;
FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len;
FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len;
NAMX_DNA_FNA_SET(fab)
nam.NAMX_ESA = esa;
nam.NAMX_ESS = NAMX_MAXRSS;
nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD;
SET_NAMX_NO_SHORT_UPCASE(nam);
fab.FAB_NAMX = &nam;
status = sys$parse(&fab, 0, 0);
if (!$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$a_pointer = errstring;
status = sys$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_MERGER, DSO_R_FAILURE);
ERR_add_error_data(7,
"filespec \"", filespec1, "\", ",
"defaults \"", filespec2, "\": ", errstring);
}
return (NULL);
}
merged = OPENSSL_malloc(nam.NAMX_ESL + 1);
if (merged == NULL)
goto malloc_err;
strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL);
merged[nam.NAMX_ESL] = '\0';
return (merged);
malloc_err:
DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE);
}
static char *vms_name_converter(DSO *dso, const char *filename)
{
int len = strlen(filename);
char *not_translated = OPENSSL_malloc(len + 1);
if (not_translated != NULL)
strcpy(not_translated, filename);
return (not_translated);
}
#endif /* OPENSSL_SYS_VMS */
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