crypto/dso/dso_vms.c

   1 /* dso_vms.c -*- mode:C; c-file-style: "eay" -*- */
   2 /*
   3  * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project
   4  * 2000.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include <string.h>
  62 #include <errno.h>
  63 #include "cryptlib.h"
  64 #include <openssl/dso.h>
  65
  66 #ifndef OPENSSL_SYS_VMS
  67 DSO_METHOD *DSO_METHOD_vms(void)
  68 {
  69     return NULL;
  70 }
  71 #else
  72
  73 # pragma message disable DOLLARID
  74 # include <rms.h>
  75 # include <lib$routines.h>
  76 # include <stsdef.h>
  77 # include <descrip.h>
  78 # include <starlet.h>
  79 # include "vms_rms.h"
  80
  81 /* Some compiler options may mask the declaration of "_malloc32". */
  82 # if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
  83 #  if __INITIAL_POINTER_SIZE == 64
  84 #   pragma pointer_size save
  85 #   pragma pointer_size 32
  86 void *_malloc32(__size_t);
  87 #   pragma pointer_size restore
  88 #  endif                        /* __INITIAL_POINTER_SIZE == 64 */
  89 # endif                         /* __INITIAL_POINTER_SIZE && defined
  90                                  * _ANSI_C_SOURCE */
  91
  92 # pragma message disable DOLLARID
  93
  94 static int vms_load(DSO *dso);
  95 static int vms_unload(DSO *dso);
  96 static void *vms_bind_var(DSO *dso, const char *symname);
  97 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
  98 static char *vms_name_converter(DSO *dso, const char *filename);
  99 static char *vms_merger(DSO *dso, const char *filespec1,
 100                         const char *filespec2);
 101
 102 static DSO_METHOD dso_meth_vms = {
 103     "OpenSSL 'VMS' shared library method",
 104     vms_load,
 105     NULL,                       /* unload */
 106     vms_bind_var,
 107     vms_bind_func,
 108     NULL,                       /* ctrl */
 109     vms_name_converter,
 110     vms_merger,
 111     NULL,                       /* init */
 112     NULL                        /* finish */
 113 };
 114
 115 /*
 116  * On VMS, the only "handle" is the file name.  LIB$FIND_IMAGE_SYMBOL depends
 117  * on the reference to the file name being the same for all calls regarding
 118  * one shared image, so we'll just store it in an instance of the following
 119  * structure and put a pointer to that instance in the meth_data stack.
 120  */
 121 typedef struct dso_internal_st {
 122     /*
 123      * This should contain the name only, no directory, no extension, nothing
 124      * but a name.
 125      */
 126     struct dsc$descriptor_s filename_dsc;
 127     char filename[NAMX_MAXRSS + 1];
 128     /*
 129      * This contains whatever is not in filename, if needed. Normally not
 130      * defined.
 131      */
 132     struct dsc$descriptor_s imagename_dsc;
 133     char imagename[NAMX_MAXRSS + 1];
 134 } DSO_VMS_INTERNAL;
 135
 136 DSO_METHOD *DSO_METHOD_vms(void)
 137 {
 138     return (&dso_meth_vms);
 139 }
 140
 141 static int vms_load(DSO *dso)
 142 {
 143     void *ptr = NULL;
 144     /* See applicable comments in dso_dl.c */
 145     char *filename = DSO_convert_filename(dso, NULL);
 146
 147 /* Ensure 32-bit pointer for "p", and appropriate malloc() function. */
 148 # if __INITIAL_POINTER_SIZE == 64
 149 #  define DSO_MALLOC _malloc32
 150 #  pragma pointer_size save
 151 #  pragma pointer_size 32
 152 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 153 #  define DSO_MALLOC OPENSSL_malloc
 154 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 155
 156     DSO_VMS_INTERNAL *p = NULL;
 157
 158 # if __INITIAL_POINTER_SIZE == 64
 159 #  pragma pointer_size restore
 160 # endif                         /* __INITIAL_POINTER_SIZE == 64 */
 161
 162     const char *sp1, *sp2;      /* Search result */
 163     const char *ext = NULL;     /* possible extension to add */
 164
 165     if (filename == NULL) {
 166         DSOerr(DSO_F_VMS_LOAD, DSO_R_NO_FILENAME);
 167         goto err;
 168     }
 169
 170     /*-
 171      * A file specification may look like this:
 172      *
 173      *      node::dev:[dir-spec]name.type;ver
 174      *
 175      * or (for compatibility with TOPS-20):
 176      *
 177      *      node::dev:<dir-spec>name.type;ver
 178      *
 179      * and the dir-spec uses '.' as separator.  Also, a dir-spec
 180      * may consist of several parts, with mixed use of [] and <>:
 181      *
 182      *      [dir1.]<dir2>
 183      *
 184      * We need to split the file specification into the name and
 185      * the rest (both before and after the name itself).
 186      */
 187     /*
 188      * Start with trying to find the end of a dir-spec, and save the position
 189      * of the byte after in sp1
 190      */
 191     sp1 = strrchr(filename, ']');
 192     sp2 = strrchr(filename, '>');
 193     if (sp1 == NULL)
 194         sp1 = sp2;
 195     if (sp2 != NULL && sp2 > sp1)
 196         sp1 = sp2;
 197     if (sp1 == NULL)
 198         sp1 = strrchr(filename, ':');
 199     if (sp1 == NULL)
 200         sp1 = filename;
 201     else
 202         sp1++;                  /* The byte after the found character */
 203     /* Now, let's see if there's a type, and save the position in sp2 */
 204     sp2 = strchr(sp1, '.');
 205     /*
 206      * If there is a period and the next character is a semi-colon,
 207      * we need to add an extension
 208      */
 209     if (sp2 != NULL && sp2[1] == ';')
 210         ext = ".EXE";
 211     /*
 212      * If we found it, that's where we'll cut.  Otherwise, look for a version
 213      * number and save the position in sp2
 214      */
 215     if (sp2 == NULL) {
 216         sp2 = strchr(sp1, ';');
 217         ext = ".EXE";
 218     }
 219     /*
 220      * If there was still nothing to find, set sp2 to point at the end of the
 221      * string
 222      */
 223     if (sp2 == NULL)
 224         sp2 = sp1 + strlen(sp1);
 225
 226     /* Check that we won't get buffer overflows */
 227     if (sp2 - sp1 > FILENAME_MAX
 228         || (sp1 - filename) + strlen(sp2) > FILENAME_MAX) {
 229         DSOerr(DSO_F_VMS_LOAD, DSO_R_FILENAME_TOO_BIG);
 230         goto err;
 231     }
 232
 233     p = DSO_MALLOC(sizeof(DSO_VMS_INTERNAL));
 234     if (p == NULL) {
 235         DSOerr(DSO_F_VMS_LOAD, ERR_R_MALLOC_FAILURE);
 236         goto err;
 237     }
 238
 239     strncpy(p->filename, sp1, sp2 - sp1);
 240     p->filename[sp2 - sp1] = '\0';
 241
 242     strncpy(p->imagename, filename, sp1 - filename);
 243     p->imagename[sp1 - filename] = '\0';
 244     if (ext) {
 245         strcat(p->imagename, ext);
 246         if (*sp2 == '.')
 247             sp2++;
 248     }
 249     strcat(p->imagename, sp2);
 250
 251     p->filename_dsc.dsc$w_length = strlen(p->filename);
 252     p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 253     p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
 254     p->filename_dsc.dsc$a_pointer = p->filename;
 255     p->imagename_dsc.dsc$w_length = strlen(p->imagename);
 256     p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 257     p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
 258     p->imagename_dsc.dsc$a_pointer = p->imagename;
 259
 260     if (!sk_void_push(dso->meth_data, (char *)p)) {
 261         DSOerr(DSO_F_VMS_LOAD, DSO_R_STACK_ERROR);
 262         goto err;
 263     }
 264
 265     /* Success (for now, we lie.  We actually do not know...) */
 266     dso->loaded_filename = filename;
 267     return (1);
 268  err:
 269     /* Cleanup! */
 270     if (p != NULL)
 271         OPENSSL_free(p);
 272     if (filename != NULL)
 273         OPENSSL_free(filename);
 274     return (0);
 275 }
 276
 277 /*
 278  * Note that this doesn't actually unload the shared image, as there is no
 279  * such thing in VMS.  Next time it get loaded again, a new copy will
 280  * actually be loaded.
 281  */
 282 static int vms_unload(DSO *dso)
 283 {
 284     DSO_VMS_INTERNAL *p;
 285     if (dso == NULL) {
 286         DSOerr(DSO_F_VMS_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
 287         return (0);
 288     }
 289     if (sk_void_num(dso->meth_data) < 1)
 290         return (1);
 291     p = (DSO_VMS_INTERNAL *)sk_void_pop(dso->meth_data);
 292     if (p == NULL) {
 293         DSOerr(DSO_F_VMS_UNLOAD, DSO_R_NULL_HANDLE);
 294         return (0);
 295     }
 296     /* Cleanup */
 297     OPENSSL_free(p);
 298     return (1);
 299 }
 300
 301 /*
 302  * We must do this in a separate function because of the way the exception
 303  * handler works (it makes this function return
 304  */
 305 static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
 306                           struct dsc$descriptor_s *symname_dsc, void **sym,
 307                           unsigned long flags)
 308 {
 309     /*
 310      * Make sure that signals are caught and returned instead of aborting the
 311      * program.  The exception handler gets unestablished automatically on
 312      * return from this function.
 313      */
 314     lib$establish(lib$sig_to_ret);
 315
 316     if (ptr->imagename_dsc.dsc$w_length)
 317         return lib$find_image_symbol(&ptr->filename_dsc,
 318                                      symname_dsc, sym,
 319                                      &ptr->imagename_dsc, flags);
 320     else
 321         return lib$find_image_symbol(&ptr->filename_dsc,
 322                                      symname_dsc, sym, 0, flags);
 323 }
 324
 325 void vms_bind_sym(DSO *dso, const char *symname, void **sym)
 326 {
 327     DSO_VMS_INTERNAL *ptr;
 328     int status;
 329 # if 0
 330     int flags = (1 << 4);       /* LIB$M_FIS_MIXEDCASE, but this symbol isn't
 331                                  * defined in VMS older than 7.0 or so */
 332 # else
 333     int flags = 0;
 334 # endif
 335     struct dsc$descriptor_s symname_dsc;
 336
 337 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
 338 # if __INITIAL_POINTER_SIZE == 64
 339 #  define SYMNAME symname_32p
 340 #  pragma pointer_size save
 341 #  pragma pointer_size 32
 342     char *symname_32p;
 343 #  pragma pointer_size restore
 344     char symname_32[NAMX_MAXRSS + 1];
 345 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 346 #  define SYMNAME ((char *) symname)
 347 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 348
 349     *sym = NULL;
 350
 351     if ((dso == NULL) || (symname == NULL)) {
 352         DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER);
 353         return;
 354     }
 355 # if __INITIAL_POINTER_SIZE == 64
 356     /* Copy the symbol name to storage with a 32-bit pointer. */
 357     symname_32p = symname_32;
 358     strcpy(symname_32p, symname);
 359 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 360
 361     symname_dsc.dsc$w_length = strlen(SYMNAME);
 362     symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 363     symname_dsc.dsc$b_class = DSC$K_CLASS_S;
 364     symname_dsc.dsc$a_pointer = SYMNAME;
 365
 366     if (sk_void_num(dso->meth_data) < 1) {
 367         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR);
 368         return;
 369     }
 370     ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
 371                                             sk_void_num(dso->meth_data) - 1);
 372     if (ptr == NULL) {
 373         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE);
 374         return;
 375     }
 376
 377     if (dso->flags & DSO_FLAG_UPCASE_SYMBOL)
 378         flags = 0;
 379
 380     status = do_find_symbol(ptr, &symname_dsc, sym, flags);
 381
 382     if (!$VMS_STATUS_SUCCESS(status)) {
 383         unsigned short length;
 384         char errstring[257];
 385         struct dsc$descriptor_s errstring_dsc;
 386
 387         errstring_dsc.dsc$w_length = sizeof(errstring);
 388         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 389         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 390         errstring_dsc.dsc$a_pointer = errstring;
 391
 392         *sym = NULL;
 393
 394         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 395
 396         if (!$VMS_STATUS_SUCCESS(status))
 397             lib$signal(status); /* This is really bad.  Abort! */
 398         else {
 399             errstring[length] = '\0';
 400
 401             DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_SYM_FAILURE);
 402             if (ptr->imagename_dsc.dsc$w_length)
 403                 ERR_add_error_data(9,
 404                                    "Symbol ", symname,
 405                                    " in ", ptr->filename,
 406                                    " (", ptr->imagename, ")",
 407                                    ": ", errstring);
 408             else
 409                 ERR_add_error_data(6,
 410                                    "Symbol ", symname,
 411                                    " in ", ptr->filename, ": ", errstring);
 412         }
 413         return;
 414     }
 415     return;
 416 }
 417
 418 static void *vms_bind_var(DSO *dso, const char *symname)
 419 {
 420     void *sym = 0;
 421     vms_bind_sym(dso, symname, &sym);
 422     return sym;
 423 }
 424
 425 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
 426 {
 427     DSO_FUNC_TYPE sym = 0;
 428     vms_bind_sym(dso, symname, (void **)&sym);
 429     return sym;
 430 }
 431
 432 static char *vms_merger(DSO *dso, const char *filespec1,
 433                         const char *filespec2)
 434 {
 435     int status;
 436     int filespec1len, filespec2len;
 437     struct FAB fab;
 438     struct NAMX_STRUCT nam;
 439     char esa[NAMX_MAXRSS + 1];
 440     char *merged;
 441
 442 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
 443 # if __INITIAL_POINTER_SIZE == 64
 444 #  define FILESPEC1 filespec1_32p;
 445 #  define FILESPEC2 filespec2_32p;
 446 #  pragma pointer_size save
 447 #  pragma pointer_size 32
 448     char *filespec1_32p;
 449     char *filespec2_32p;
 450 #  pragma pointer_size restore
 451     char filespec1_32[NAMX_MAXRSS + 1];
 452     char filespec2_32[NAMX_MAXRSS + 1];
 453 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 454 #  define FILESPEC1 ((char *) filespec1)
 455 #  define FILESPEC2 ((char *) filespec2)
 456 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 457
 458     if (!filespec1)
 459         filespec1 = "";
 460     if (!filespec2)
 461         filespec2 = "";
 462     filespec1len = strlen(filespec1);
 463     filespec2len = strlen(filespec2);
 464
 465 # if __INITIAL_POINTER_SIZE == 64
 466     /* Copy the file names to storage with a 32-bit pointer. */
 467     filespec1_32p = filespec1_32;
 468     filespec2_32p = filespec2_32;
 469     strcpy(filespec1_32p, filespec1);
 470     strcpy(filespec2_32p, filespec2);
 471 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 472
 473     fab = cc$rms_fab;
 474     nam = CC_RMS_NAMX;
 475
 476     FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
 477     FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len;
 478     FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
 479     FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len;
 480     NAMX_DNA_FNA_SET(fab)
 481
 482         nam.NAMX_ESA = esa;
 483     nam.NAMX_ESS = NAMX_MAXRSS;
 484     nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD;
 485     SET_NAMX_NO_SHORT_UPCASE(nam);
 486
 487     fab.FAB_NAMX = &nam;
 488
 489     status = sys$parse(&fab, 0, 0);
 490
 491     if (!$VMS_STATUS_SUCCESS(status)) {
 492         unsigned short length;
 493         char errstring[257];
 494         struct dsc$descriptor_s errstring_dsc;
 495
 496         errstring_dsc.dsc$w_length = sizeof(errstring);
 497         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 498         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 499         errstring_dsc.dsc$a_pointer = errstring;
 500
 501         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 502
 503         if (!$VMS_STATUS_SUCCESS(status))
 504             lib$signal(status); /* This is really bad.  Abort! */
 505         else {
 506             errstring[length] = '\0';
 507
 508             DSOerr(DSO_F_VMS_MERGER, DSO_R_FAILURE);
 509             ERR_add_error_data(7,
 510                                "filespec \"", filespec1, "\", ",
 511                                "defaults \"", filespec2, "\": ", errstring);
 512         }
 513         return (NULL);
 514     }
 515
 516     merged = OPENSSL_malloc(nam.NAMX_ESL + 1);
 517     if (!merged)
 518         goto malloc_err;
 519     strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL);
 520     merged[nam.NAMX_ESL] = '\0';
 521     return (merged);
 522  malloc_err:
 523     DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE);
 524 }
 525
 526 static char *vms_name_converter(DSO *dso, const char *filename)
 527 {
 528     int len = strlen(filename);
 529     char *not_translated = OPENSSL_malloc(len + 1);
 530     if (not_translated)
 531         strcpy(not_translated, filename);
 532     return (not_translated);
 533 }
 534
 535 #endif                          /* OPENSSL_SYS_VMS */