dso_vms.c
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上传日期:2020-08-09
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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>
- #ifdef OPENSSL_SYS_VMS
- #pragma message disable DOLLARID
- #include <rms.h>
- #include <lib$routines.h>
- #include <stsdef.h>
- #include <descrip.h>
- #include <starlet.h>
- #endif
- #ifndef OPENSSL_SYS_VMS
- DSO_METHOD *DSO_METHOD_vms(void)
- {
- return NULL;
- }
- #else
- #pragma message disable DOLLARID
- static int vms_load(DSO *dso);
- static int vms_unload(DSO *dso);
- static void *vms_bind_var(DSO *dso, const char *symname);
- static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
- #if 0
- static int vms_unbind_var(DSO *dso, char *symname, void *symptr);
- static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
- static int vms_init(DSO *dso);
- static int vms_finish(DSO *dso);
- static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);
- #endif
- static char *vms_name_converter(DSO *dso, const char *filename);
- static char *vms_merger(DSO *dso, const char *filespec1,
- const char *filespec2);
- static DSO_METHOD dso_meth_vms = {
- "OpenSSL 'VMS' shared library method",
- vms_load,
- NULL, /* unload */
- vms_bind_var,
- vms_bind_func,
- /* For now, "unbind" doesn't exist */
- #if 0
- NULL, /* unbind_var */
- NULL, /* unbind_func */
- #endif
- NULL, /* ctrl */
- vms_name_converter,
- vms_merger,
- NULL, /* init */
- NULL /* finish */
- };
- /* On VMS, the only "handle" is the file name. LIB$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$descriptor_s filename_dsc;
- char filename[FILENAME_MAX+1];
- /* This contains whatever is not in filename, if needed.
- * Normally not defined. */
- struct dsc$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_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 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] = ' ';
- strncpy(p->imagename, filename, sp1-filename);
- p->imagename[sp1-filename] = ' ';
- 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_SYM,ERR_R_PASSED_NULL_PARAMETER);
- return;
- }
- if(sk_num(dso->meth_data) < 1)
- {
- DSOerr(DSO_F_VMS_BIND_SYM,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_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$signal(status); /* This is really bad. Abort! */
- else
- {
- errstring[length] = ' ';
- DSOerr(DSO_F_VMS_BIND_SYM,DSO_R_SYM_FAILURE);
- if (ptr->imagename_dsc.dsc$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;
- #ifdef NAML$C_MAXRSS
- struct NAML nam;
- char esa[NAML$C_MAXRSS];
- #else
- struct NAM nam;
- char esa[NAM$C_MAXRSS];
- #endif
- char *merged;
- if (!filespec1) filespec1 = "";
- if (!filespec2) filespec2 = "";
- filespec1len = strlen(filespec1);
- filespec2len = strlen(filespec2);
- fab = cc$rms_fab;
- #ifdef NAML$C_MAXRSS
- nam = cc$rms_naml;
- #else
- nam = cc$rms_nam;
- #endif
- fab.fab$l_fna = (char *)filespec1;
- fab.fab$b_fns = filespec1len;
- fab.fab$l_dna = (char *)filespec2;
- fab.fab$b_dns = filespec2len;
- #ifdef NAML$C_MAXRSS
- if (filespec1len > NAM$C_MAXRSS)
- {
- fab.fab$l_fna = 0;
- fab.fab$b_fns = 0;
- nam.naml$l_long_filename = (char *)filespec1;
- nam.naml$l_long_filename_size = filespec1len;
- }
- if (filespec2len > NAM$C_MAXRSS)
- {
- fab.fab$l_dna = 0;
- fab.fab$b_dns = 0;
- nam.naml$l_long_defname = (char *)filespec2;
- nam.naml$l_long_defname_size = filespec2len;
- }
- nam.naml$l_esa = esa;
- nam.naml$b_ess = NAM$C_MAXRSS;
- nam.naml$l_long_expand = esa;
- nam.naml$l_long_expand_alloc = sizeof(esa);
- nam.naml$b_nop = NAM$M_SYNCHK | NAM$M_PWD;
- nam.naml$v_no_short_upcase = 1;
- fab.fab$l_naml = &nam;
- #else
- nam.nam$l_esa = esa;
- nam.nam$b_ess = NAM$C_MAXRSS;
- nam.nam$b_nop = NAM$M_SYNCHK | NAM$M_PWD;
- fab.fab$l_nam = &nam;
- #endif
- status = sys$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$signal(status); /* This is really bad. Abort! */
- else
- {
- errstring[length] = ' ';
- DSOerr(DSO_F_VMS_MERGER,DSO_R_FAILURE);
- ERR_add_error_data(7,
- "filespec "", filespec1, "", ",
- "defaults "", filespec2, "": ",
- errstring);
- }
- return(NULL);
- }
- #ifdef NAML$C_MAXRSS
- if (nam.naml$l_long_expand_size)
- {
- merged = OPENSSL_malloc(nam.naml$l_long_expand_size + 1);
- if(!merged)
- goto malloc_err;
- strncpy(merged, nam.naml$l_long_expand,
- nam.naml$l_long_expand_size);
- merged[nam.naml$l_long_expand_size] = ' ';
- }
- else
- {
- merged = OPENSSL_malloc(nam.naml$b_esl + 1);
- if(!merged)
- goto malloc_err;
- strncpy(merged, nam.naml$l_esa,
- nam.naml$b_esl);
- merged[nam.naml$b_esl] = ' ';
- }
- #else
- merged = OPENSSL_malloc(nam.nam$b_esl + 1);
- if(!merged)
- goto malloc_err;
- strncpy(merged, nam.nam$l_esa,
- nam.nam$b_esl);
- merged[nam.nam$b_esl] = ' ';
- #endif
- 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);
- strcpy(not_translated,filename);
- return(not_translated);
- }
- #endif /* OPENSSL_SYS_VMS */