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openssl/crypto/dso/dso_vms.c
Matt Caswell 918bb86529 Unchecked malloc fixes 
Miscellaneous unchecked malloc fixes. Also fixed some mem leaks on error
paths as I spotted them along the way.

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-03-05 09:09:57 +00:00

536 lines
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/* dso_vms.c -*- mode:C; c-file-style: "eay" -*- */
/*
* 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>
#ifndef OPENSSL_SYS_VMS
DSO_METHOD *DSO_METHOD_vms(void)
{
return NULL;
}
#else
# pragma message disable DOLLARID
# include <rms.h>
# include <lib$routines.h>
# include <stsdef.h>
# include <descrip.h>
# include <starlet.h>
# include "vms_rms.h"
/* Some compiler options may mask the declaration of "_malloc32". */
# if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
# pragma pointer_size 32
void *_malloc32(__size_t);
# pragma pointer_size restore
# endif /* __INITIAL_POINTER_SIZE == 64 */
# endif /* __INITIAL_POINTER_SIZE && defined
* _ANSI_C_SOURCE */
# pragma message disable DOLLARID
static int vms_load(DSO *dso);
static int vms_unload(DSO *dso);
static void *vms_bind_var(DSO *dso, const char *symname);
static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
static char *vms_name_converter(DSO *dso, const char *filename);
static char *vms_merger(DSO *dso, const char *filespec1,
const char *filespec2);
static DSO_METHOD dso_meth_vms = {
"OpenSSL 'VMS' shared library method",
vms_load,
NULL, /* unload */
vms_bind_var,
vms_bind_func,
NULL, /* ctrl */
vms_name_converter,
vms_merger,
NULL, /* init */
NULL /* finish */
};
/*
* On VMS, the only "handle" is the file name. LIB$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_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);
/* 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(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';
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! */
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_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;
# 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;
/* 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 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_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)
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)
strcpy(not_translated, filename);
return (not_translated);
}
#endif /* OPENSSL_SYS_VMS */
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