crypto/dso/dso_vms.c

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