466 lines
14 KiB
C
466 lines
14 KiB
C
/*
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* Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "dso_locl.h"
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#ifdef OPENSSL_SYS_VMS
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# pragma message disable DOLLARID
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# include <errno.h>
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# include <rms.h>
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# include <lib$routines.h>
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# include <libfisdef.h>
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# include <stsdef.h>
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# include <descrip.h>
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# include <starlet.h>
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# include "../vms_rms.h"
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/* Some compiler options may mask the declaration of "_malloc32". */
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# if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
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# if __INITIAL_POINTER_SIZE == 64
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# pragma pointer_size save
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# pragma pointer_size 32
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void *_malloc32(__size_t);
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# pragma pointer_size restore
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# endif /* __INITIAL_POINTER_SIZE == 64 */
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# endif /* __INITIAL_POINTER_SIZE && defined
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* _ANSI_C_SOURCE */
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# pragma message disable DOLLARID
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static int vms_load(DSO *dso);
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static int vms_unload(DSO *dso);
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static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
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static char *vms_name_converter(DSO *dso, const char *filename);
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static char *vms_merger(DSO *dso, const char *filespec1,
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const char *filespec2);
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static DSO_METHOD dso_meth_vms = {
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"OpenSSL 'VMS' shared library method",
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vms_load,
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NULL, /* unload */
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vms_bind_func,
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NULL, /* ctrl */
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vms_name_converter,
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vms_merger,
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NULL, /* init */
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NULL /* finish */
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};
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/*
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* On VMS, the only "handle" is the file name. LIB$FIND_IMAGE_SYMBOL depends
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* on the reference to the file name being the same for all calls regarding
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* one shared image, so we'll just store it in an instance of the following
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* structure and put a pointer to that instance in the meth_data stack.
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*/
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typedef struct dso_internal_st {
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/*
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* This should contain the name only, no directory, no extension, nothing
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* but a name.
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*/
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struct dsc$descriptor_s filename_dsc;
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char filename[NAMX_MAXRSS + 1];
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/*
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* This contains whatever is not in filename, if needed. Normally not
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* defined.
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*/
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struct dsc$descriptor_s imagename_dsc;
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char imagename[NAMX_MAXRSS + 1];
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} DSO_VMS_INTERNAL;
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DSO_METHOD *DSO_METHOD_openssl(void)
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{
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return &dso_meth_vms;
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}
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static int vms_load(DSO *dso)
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{
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void *ptr = NULL;
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/* See applicable comments in dso_dl.c */
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char *filename = DSO_convert_filename(dso, NULL);
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/* Ensure 32-bit pointer for "p", and appropriate malloc() function. */
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# if __INITIAL_POINTER_SIZE == 64
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# define DSO_MALLOC _malloc32
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# pragma pointer_size save
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# pragma pointer_size 32
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# else /* __INITIAL_POINTER_SIZE == 64 */
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# define DSO_MALLOC OPENSSL_malloc
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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DSO_VMS_INTERNAL *p = NULL;
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# if __INITIAL_POINTER_SIZE == 64
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# pragma pointer_size restore
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# endif /* __INITIAL_POINTER_SIZE == 64 */
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const char *sp1, *sp2; /* Search result */
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const char *ext = NULL; /* possible extension to add */
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if (filename == NULL) {
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DSOerr(DSO_F_VMS_LOAD, DSO_R_NO_FILENAME);
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goto err;
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}
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/*-
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* A file specification may look like this:
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*
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* node::dev:[dir-spec]name.type;ver
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*
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* or (for compatibility with TOPS-20):
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*
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* node::dev:<dir-spec>name.type;ver
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*
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* and the dir-spec uses '.' as separator. Also, a dir-spec
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* may consist of several parts, with mixed use of [] and <>:
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*
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* [dir1.]<dir2>
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*
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* We need to split the file specification into the name and
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* the rest (both before and after the name itself).
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*/
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/*
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* Start with trying to find the end of a dir-spec, and save the position
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* of the byte after in sp1
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*/
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sp1 = strrchr(filename, ']');
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sp2 = strrchr(filename, '>');
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if (sp1 == NULL)
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sp1 = sp2;
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if (sp2 != NULL && sp2 > sp1)
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sp1 = sp2;
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if (sp1 == NULL)
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sp1 = strrchr(filename, ':');
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if (sp1 == NULL)
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sp1 = filename;
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else
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sp1++; /* The byte after the found character */
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/* Now, let's see if there's a type, and save the position in sp2 */
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sp2 = strchr(sp1, '.');
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/*
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* If there is a period and the next character is a semi-colon,
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* we need to add an extension
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*/
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if (sp2 != NULL && sp2[1] == ';')
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ext = ".EXE";
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/*
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* If we found it, that's where we'll cut. Otherwise, look for a version
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* number and save the position in sp2
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*/
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if (sp2 == NULL) {
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sp2 = strchr(sp1, ';');
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ext = ".EXE";
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}
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/*
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* If there was still nothing to find, set sp2 to point at the end of the
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* string
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*/
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if (sp2 == NULL)
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sp2 = sp1 + strlen(sp1);
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/* Check that we won't get buffer overflows */
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if (sp2 - sp1 > FILENAME_MAX
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|| (sp1 - filename) + strlen(sp2) > FILENAME_MAX) {
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DSOerr(DSO_F_VMS_LOAD, DSO_R_FILENAME_TOO_BIG);
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goto err;
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}
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p = DSO_MALLOC(sizeof(*p));
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if (p == NULL) {
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DSOerr(DSO_F_VMS_LOAD, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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strncpy(p->filename, sp1, sp2 - sp1);
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p->filename[sp2 - sp1] = '\0';
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strncpy(p->imagename, filename, sp1 - filename);
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p->imagename[sp1 - filename] = '\0';
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if (ext) {
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strcat(p->imagename, ext);
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if (*sp2 == '.')
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sp2++;
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}
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strcat(p->imagename, sp2);
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p->filename_dsc.dsc$w_length = strlen(p->filename);
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p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
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p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
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p->filename_dsc.dsc$a_pointer = p->filename;
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p->imagename_dsc.dsc$w_length = strlen(p->imagename);
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p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
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p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
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p->imagename_dsc.dsc$a_pointer = p->imagename;
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if (!sk_void_push(dso->meth_data, (char *)p)) {
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DSOerr(DSO_F_VMS_LOAD, DSO_R_STACK_ERROR);
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goto err;
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}
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/* Success (for now, we lie. We actually do not know...) */
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dso->loaded_filename = filename;
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return (1);
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err:
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/* Cleanup! */
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OPENSSL_free(p);
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OPENSSL_free(filename);
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return (0);
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}
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/*
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* Note that this doesn't actually unload the shared image, as there is no
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* such thing in VMS. Next time it get loaded again, a new copy will
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* actually be loaded.
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*/
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static int vms_unload(DSO *dso)
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{
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DSO_VMS_INTERNAL *p;
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if (dso == NULL) {
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DSOerr(DSO_F_VMS_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
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return (0);
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}
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if (sk_void_num(dso->meth_data) < 1)
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return (1);
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p = (DSO_VMS_INTERNAL *)sk_void_pop(dso->meth_data);
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if (p == NULL) {
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DSOerr(DSO_F_VMS_UNLOAD, DSO_R_NULL_HANDLE);
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return (0);
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}
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/* Cleanup */
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OPENSSL_free(p);
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return (1);
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}
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/*
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* We must do this in a separate function because of the way the exception
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* handler works (it makes this function return
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*/
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static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
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struct dsc$descriptor_s *symname_dsc, void **sym,
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unsigned long flags)
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{
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/*
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* Make sure that signals are caught and returned instead of aborting the
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* program. The exception handler gets unestablished automatically on
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* return from this function.
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*/
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lib$establish(lib$sig_to_ret);
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if (ptr->imagename_dsc.dsc$w_length)
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return lib$find_image_symbol(&ptr->filename_dsc,
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symname_dsc, sym,
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&ptr->imagename_dsc, flags);
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else
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return lib$find_image_symbol(&ptr->filename_dsc,
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symname_dsc, sym, 0, flags);
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}
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void vms_bind_sym(DSO *dso, const char *symname, void **sym)
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{
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DSO_VMS_INTERNAL *ptr;
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int status;
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# ifdef LIB$M_FIS_MIXEDCASE
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int flags = LIB$M_FIS_MIXEDCASE;
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# else
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int flags = (1 << 4);
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# endif
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struct dsc$descriptor_s symname_dsc;
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/* Arrange 32-bit pointer to (copied) string storage, if needed. */
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# if __INITIAL_POINTER_SIZE == 64
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# define SYMNAME symname_32p
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# pragma pointer_size save
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# pragma pointer_size 32
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char *symname_32p;
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# pragma pointer_size restore
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char symname_32[NAMX_MAXRSS + 1];
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# else /* __INITIAL_POINTER_SIZE == 64 */
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# define SYMNAME ((char *) symname)
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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*sym = NULL;
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if ((dso == NULL) || (symname == NULL)) {
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DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER);
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return;
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}
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# if __INITIAL_POINTER_SIZE == 64
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/* Copy the symbol name to storage with a 32-bit pointer. */
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symname_32p = symname_32;
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strcpy(symname_32p, symname);
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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symname_dsc.dsc$w_length = strlen(SYMNAME);
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symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
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symname_dsc.dsc$b_class = DSC$K_CLASS_S;
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symname_dsc.dsc$a_pointer = SYMNAME;
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if (sk_void_num(dso->meth_data) < 1) {
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DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR);
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return;
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}
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ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
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sk_void_num(dso->meth_data) - 1);
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if (ptr == NULL) {
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DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE);
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return;
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}
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if (dso->flags & DSO_FLAG_UPCASE_SYMBOL)
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flags = 0;
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status = do_find_symbol(ptr, &symname_dsc, sym, flags);
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if (!$VMS_STATUS_SUCCESS(status)) {
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unsigned short length;
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char errstring[257];
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struct dsc$descriptor_s errstring_dsc;
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errstring_dsc.dsc$w_length = sizeof(errstring);
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errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
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errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
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errstring_dsc.dsc$a_pointer = errstring;
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*sym = NULL;
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status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
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if (!$VMS_STATUS_SUCCESS(status))
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lib$signal(status); /* This is really bad. Abort! */
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else {
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errstring[length] = '\0';
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DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_SYM_FAILURE);
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if (ptr->imagename_dsc.dsc$w_length)
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ERR_add_error_data(9,
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"Symbol ", symname,
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" in ", ptr->filename,
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" (", ptr->imagename, ")",
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": ", errstring);
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else
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ERR_add_error_data(6,
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"Symbol ", symname,
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" in ", ptr->filename, ": ", errstring);
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}
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return;
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}
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return;
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}
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static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
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{
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DSO_FUNC_TYPE sym = 0;
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vms_bind_sym(dso, symname, (void **)&sym);
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return sym;
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}
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static char *vms_merger(DSO *dso, const char *filespec1,
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const char *filespec2)
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{
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int status;
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int filespec1len, filespec2len;
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struct FAB fab;
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struct NAMX_STRUCT nam;
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char esa[NAMX_MAXRSS + 1];
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char *merged;
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/* Arrange 32-bit pointer to (copied) string storage, if needed. */
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# if __INITIAL_POINTER_SIZE == 64
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# define FILESPEC1 filespec1_32p;
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# define FILESPEC2 filespec2_32p;
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# pragma pointer_size save
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# pragma pointer_size 32
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char *filespec1_32p;
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char *filespec2_32p;
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# pragma pointer_size restore
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char filespec1_32[NAMX_MAXRSS + 1];
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char filespec2_32[NAMX_MAXRSS + 1];
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# else /* __INITIAL_POINTER_SIZE == 64 */
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# define FILESPEC1 ((char *) filespec1)
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# define FILESPEC2 ((char *) filespec2)
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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if (!filespec1)
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filespec1 = "";
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if (!filespec2)
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filespec2 = "";
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filespec1len = strlen(filespec1);
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filespec2len = strlen(filespec2);
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# if __INITIAL_POINTER_SIZE == 64
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/* Copy the file names to storage with a 32-bit pointer. */
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filespec1_32p = filespec1_32;
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filespec2_32p = filespec2_32;
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strcpy(filespec1_32p, filespec1);
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strcpy(filespec2_32p, filespec2);
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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fab = cc$rms_fab;
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nam = CC_RMS_NAMX;
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FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
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FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len;
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FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
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FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len;
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NAMX_DNA_FNA_SET(fab)
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nam.NAMX_ESA = esa;
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nam.NAMX_ESS = NAMX_MAXRSS;
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nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD;
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SET_NAMX_NO_SHORT_UPCASE(nam);
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fab.FAB_NAMX = &nam;
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status = sys$parse(&fab, 0, 0);
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if (!$VMS_STATUS_SUCCESS(status)) {
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unsigned short length;
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char errstring[257];
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struct dsc$descriptor_s errstring_dsc;
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errstring_dsc.dsc$w_length = sizeof(errstring);
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errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
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errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
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errstring_dsc.dsc$a_pointer = errstring;
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status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
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if (!$VMS_STATUS_SUCCESS(status))
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lib$signal(status); /* This is really bad. Abort! */
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else {
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errstring[length] = '\0';
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DSOerr(DSO_F_VMS_MERGER, DSO_R_FAILURE);
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ERR_add_error_data(7,
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"filespec \"", filespec1, "\", ",
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"defaults \"", filespec2, "\": ", errstring);
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}
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return (NULL);
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}
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merged = OPENSSL_malloc(nam.NAMX_ESL + 1);
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if (merged == NULL)
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goto malloc_err;
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strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL);
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merged[nam.NAMX_ESL] = '\0';
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return (merged);
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malloc_err:
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DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE);
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}
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static char *vms_name_converter(DSO *dso, const char *filename)
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{
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int len = strlen(filename);
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char *not_translated = OPENSSL_malloc(len + 1);
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if (not_translated != NULL)
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strcpy(not_translated, filename);
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return (not_translated);
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}
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#endif /* OPENSSL_SYS_VMS */
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