release/src/router/openssl/crypto/dso/dso_vms.c

   1 /* dso_vms.c */
   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 # if 0
  99 static int vms_unbind_var(DSO *dso, char *symname, void *symptr);
 100 static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
 101 static int vms_init(DSO *dso);
 102 static int vms_finish(DSO *dso);
 103 static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);
 104 # endif
 105 static char *vms_name_converter(DSO *dso, const char *filename);
 106 static char *vms_merger(DSO *dso, const char *filespec1,
 107                         const char *filespec2);
 108
 109 static DSO_METHOD dso_meth_vms = {
 110     "OpenSSL 'VMS' shared library method",
 111     vms_load,
 112     NULL,                       /* unload */
 113     vms_bind_var,
 114     vms_bind_func,
 115 /* For now, "unbind" doesn't exist */
 116 # if 0
 117     NULL,                       /* unbind_var */
 118     NULL,                       /* unbind_func */
 119 # endif
 120     NULL,                       /* ctrl */
 121     vms_name_converter,
 122     vms_merger,
 123     NULL,                       /* init */
 124     NULL                        /* finish */
 125 };
 126
 127 /*
 128  * On VMS, the only "handle" is the file name.  LIB$FIND_IMAGE_SYMBOL depends
 129  * on the reference to the file name being the same for all calls regarding
 130  * one shared image, so we'll just store it in an instance of the following
 131  * structure and put a pointer to that instance in the meth_data stack.
 132  */
 133 typedef struct dso_internal_st {
 134     /*
 135      * This should contain the name only, no directory, no extension, nothing
 136      * but a name.
 137      */
 138     struct dsc$descriptor_s filename_dsc;
 139     char filename[NAMX_MAXRSS + 1];
 140     /*
 141      * This contains whatever is not in filename, if needed. Normally not
 142      * defined.
 143      */
 144     struct dsc$descriptor_s imagename_dsc;
 145     char imagename[NAMX_MAXRSS + 1];
 146 } DSO_VMS_INTERNAL;
 147
 148 DSO_METHOD *DSO_METHOD_vms(void)
 149 {
 150     return (&dso_meth_vms);
 151 }
 152
 153 static int vms_load(DSO *dso)
 154 {
 155     void *ptr = NULL;
 156     /* See applicable comments in dso_dl.c */
 157     char *filename = DSO_convert_filename(dso, NULL);
 158
 159 /* Ensure 32-bit pointer for "p", and appropriate malloc() function. */
 160 # if __INITIAL_POINTER_SIZE == 64
 161 #  define DSO_MALLOC _malloc32
 162 #  pragma pointer_size save
 163 #  pragma pointer_size 32
 164 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 165 #  define DSO_MALLOC OPENSSL_malloc
 166 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 167
 168     DSO_VMS_INTERNAL *p = NULL;
 169
 170 # if __INITIAL_POINTER_SIZE == 64
 171 #  pragma pointer_size restore
 172 # endif                         /* __INITIAL_POINTER_SIZE == 64 */
 173
 174     const char *sp1, *sp2;      /* Search result */
 175     const char *ext = NULL;     /* possible extension to add */
 176
 177     if (filename == NULL) {
 178         DSOerr(DSO_F_VMS_LOAD, DSO_R_NO_FILENAME);
 179         goto err;
 180     }
 181
 182     /*-
 183      * A file specification may look like this:
 184      *
 185      *      node::dev:[dir-spec]name.type;ver
 186      *
 187      * or (for compatibility with TOPS-20):
 188      *
 189      *      node::dev:<dir-spec>name.type;ver
 190      *
 191      * and the dir-spec uses '.' as separator.  Also, a dir-spec
 192      * may consist of several parts, with mixed use of [] and <>:
 193      *
 194      *      [dir1.]<dir2>
 195      *
 196      * We need to split the file specification into the name and
 197      * the rest (both before and after the name itself).
 198      */
 199     /*
 200      * Start with trying to find the end of a dir-spec, and save the position
 201      * of the byte after in sp1
 202      */
 203     sp1 = strrchr(filename, ']');
 204     sp2 = strrchr(filename, '>');
 205     if (sp1 == NULL)
 206         sp1 = sp2;
 207     if (sp2 != NULL && sp2 > sp1)
 208         sp1 = sp2;
 209     if (sp1 == NULL)
 210         sp1 = strrchr(filename, ':');
 211     if (sp1 == NULL)
 212         sp1 = filename;
 213     else
 214         sp1++;                  /* The byte after the found character */
 215     /* Now, let's see if there's a type, and save the position in sp2 */
 216     sp2 = strchr(sp1, '.');
 217     /*
 218      * If there is a period and the next character is a semi-colon,
 219      * we need to add an extension
 220      */
 221     if (sp2 != NULL && sp2[1] == ';')
 222         ext = ".EXE";
 223     /*
 224      * If we found it, that's where we'll cut.  Otherwise, look for a version
 225      * number and save the position in sp2
 226      */
 227     if (sp2 == NULL) {
 228         sp2 = strchr(sp1, ';');
 229         ext = ".EXE";
 230     }
 231     /*
 232      * If there was still nothing to find, set sp2 to point at the end of the
 233      * string
 234      */
 235     if (sp2 == NULL)
 236         sp2 = sp1 + strlen(sp1);
 237
 238     /* Check that we won't get buffer overflows */
 239     if (sp2 - sp1 > FILENAME_MAX
 240         || (sp1 - filename) + strlen(sp2) > FILENAME_MAX) {
 241         DSOerr(DSO_F_VMS_LOAD, DSO_R_FILENAME_TOO_BIG);
 242         goto err;
 243     }
 244
 245     p = DSO_MALLOC(sizeof(DSO_VMS_INTERNAL));
 246     if (p == NULL) {
 247         DSOerr(DSO_F_VMS_LOAD, ERR_R_MALLOC_FAILURE);
 248         goto err;
 249     }
 250
 251     strncpy(p->filename, sp1, sp2 - sp1);
 252     p->filename[sp2 - sp1] = '\0';
 253
 254     strncpy(p->imagename, filename, sp1 - filename);
 255     p->imagename[sp1 - filename] = '\0';
 256     if (ext) {
 257         strcat(p->imagename, ext);
 258         if (*sp2 == '.')
 259             sp2++;
 260     }
 261     strcat(p->imagename, sp2);
 262
 263     p->filename_dsc.dsc$w_length = strlen(p->filename);
 264     p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 265     p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
 266     p->filename_dsc.dsc$a_pointer = p->filename;
 267     p->imagename_dsc.dsc$w_length = strlen(p->imagename);
 268     p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 269     p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
 270     p->imagename_dsc.dsc$a_pointer = p->imagename;
 271
 272     if (!sk_void_push(dso->meth_data, (char *)p)) {
 273         DSOerr(DSO_F_VMS_LOAD, DSO_R_STACK_ERROR);
 274         goto err;
 275     }
 276
 277     /* Success (for now, we lie.  We actually do not know...) */
 278     dso->loaded_filename = filename;
 279     return (1);
 280  err:
 281     /* Cleanup! */
 282     if (p != NULL)
 283         OPENSSL_free(p);
 284     if (filename != NULL)
 285         OPENSSL_free(filename);
 286     return (0);
 287 }
 288
 289 /*
 290  * Note that this doesn't actually unload the shared image, as there is no
 291  * such thing in VMS.  Next time it get loaded again, a new copy will
 292  * actually be loaded.
 293  */
 294 static int vms_unload(DSO *dso)
 295 {
 296     DSO_VMS_INTERNAL *p;
 297     if (dso == NULL) {
 298         DSOerr(DSO_F_VMS_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
 299         return (0);
 300     }
 301     if (sk_void_num(dso->meth_data) < 1)
 302         return (1);
 303     p = (DSO_VMS_INTERNAL *)sk_void_pop(dso->meth_data);
 304     if (p == NULL) {
 305         DSOerr(DSO_F_VMS_UNLOAD, DSO_R_NULL_HANDLE);
 306         return (0);
 307     }
 308     /* Cleanup */
 309     OPENSSL_free(p);
 310     return (1);
 311 }
 312
 313 /*
 314  * We must do this in a separate function because of the way the exception
 315  * handler works (it makes this function return
 316  */
 317 static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
 318                           struct dsc$descriptor_s *symname_dsc, void **sym,
 319                           unsigned long flags)
 320 {
 321     /*
 322      * Make sure that signals are caught and returned instead of aborting the
 323      * program.  The exception handler gets unestablished automatically on
 324      * return from this function.
 325      */
 326     lib$establish(lib$sig_to_ret);
 327
 328     if (ptr->imagename_dsc.dsc$w_length)
 329         return lib$find_image_symbol(&ptr->filename_dsc,
 330                                      symname_dsc, sym,
 331                                      &ptr->imagename_dsc, flags);
 332     else
 333         return lib$find_image_symbol(&ptr->filename_dsc,
 334                                      symname_dsc, sym, 0, flags);
 335 }
 336
 337 void vms_bind_sym(DSO *dso, const char *symname, void **sym)
 338 {
 339     DSO_VMS_INTERNAL *ptr;
 340     int status;
 341 # if 0
 342     int flags = (1 << 4);       /* LIB$M_FIS_MIXEDCASE, but this symbol isn't
 343                                  * defined in VMS older than 7.0 or so */
 344 # else
 345     int flags = 0;
 346 # endif
 347     struct dsc$descriptor_s symname_dsc;
 348
 349 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
 350 # if __INITIAL_POINTER_SIZE == 64
 351 #  define SYMNAME symname_32p
 352 #  pragma pointer_size save
 353 #  pragma pointer_size 32
 354     char *symname_32p;
 355 #  pragma pointer_size restore
 356     char symname_32[NAMX_MAXRSS + 1];
 357 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 358 #  define SYMNAME ((char *) symname)
 359 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 360
 361     *sym = NULL;
 362
 363     if ((dso == NULL) || (symname == NULL)) {
 364         DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER);
 365         return;
 366     }
 367 # if __INITIAL_POINTER_SIZE == 64
 368     /* Copy the symbol name to storage with a 32-bit pointer. */
 369     symname_32p = symname_32;
 370     strcpy(symname_32p, symname);
 371 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 372
 373     symname_dsc.dsc$w_length = strlen(SYMNAME);
 374     symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 375     symname_dsc.dsc$b_class = DSC$K_CLASS_S;
 376     symname_dsc.dsc$a_pointer = SYMNAME;
 377
 378     if (sk_void_num(dso->meth_data) < 1) {
 379         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR);
 380         return;
 381     }
 382     ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
 383                                             sk_void_num(dso->meth_data) - 1);
 384     if (ptr == NULL) {
 385         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE);
 386         return;
 387     }
 388
 389     if (dso->flags & DSO_FLAG_UPCASE_SYMBOL)
 390         flags = 0;
 391
 392     status = do_find_symbol(ptr, &symname_dsc, sym, flags);
 393
 394     if (!$VMS_STATUS_SUCCESS(status)) {
 395         unsigned short length;
 396         char errstring[257];
 397         struct dsc$descriptor_s errstring_dsc;
 398
 399         errstring_dsc.dsc$w_length = sizeof(errstring);
 400         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 401         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 402         errstring_dsc.dsc$a_pointer = errstring;
 403
 404         *sym = NULL;
 405
 406         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 407
 408         if (!$VMS_STATUS_SUCCESS(status))
 409             lib$signal(status); /* This is really bad.  Abort! */
 410         else {
 411             errstring[length] = '\0';
 412
 413             DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_SYM_FAILURE);
 414             if (ptr->imagename_dsc.dsc$w_length)
 415                 ERR_add_error_data(9,
 416                                    "Symbol ", symname,
 417                                    " in ", ptr->filename,
 418                                    " (", ptr->imagename, ")",
 419                                    ": ", errstring);
 420             else
 421                 ERR_add_error_data(6,
 422                                    "Symbol ", symname,
 423                                    " in ", ptr->filename, ": ", errstring);
 424         }
 425         return;
 426     }
 427     return;
 428 }
 429
 430 static void *vms_bind_var(DSO *dso, const char *symname)
 431 {
 432     void *sym = 0;
 433     vms_bind_sym(dso, symname, &sym);
 434     return sym;
 435 }
 436
 437 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
 438 {
 439     DSO_FUNC_TYPE sym = 0;
 440     vms_bind_sym(dso, symname, (void **)&sym);
 441     return sym;
 442 }
 443
 444 static char *vms_merger(DSO *dso, const char *filespec1,
 445                         const char *filespec2)
 446 {
 447     int status;
 448     int filespec1len, filespec2len;
 449     struct FAB fab;
 450     struct NAMX_STRUCT nam;
 451     char esa[NAMX_MAXRSS + 1];
 452     char *merged;
 453
 454 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
 455 # if __INITIAL_POINTER_SIZE == 64
 456 #  define FILESPEC1 filespec1_32p;
 457 #  define FILESPEC2 filespec2_32p;
 458 #  pragma pointer_size save
 459 #  pragma pointer_size 32
 460     char *filespec1_32p;
 461     char *filespec2_32p;
 462 #  pragma pointer_size restore
 463     char filespec1_32[NAMX_MAXRSS + 1];
 464     char filespec2_32[NAMX_MAXRSS + 1];
 465 # else                          /* __INITIAL_POINTER_SIZE == 64 */
 466 #  define FILESPEC1 ((char *) filespec1)
 467 #  define FILESPEC2 ((char *) filespec2)
 468 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 469
 470     if (!filespec1)
 471         filespec1 = "";
 472     if (!filespec2)
 473         filespec2 = "";
 474     filespec1len = strlen(filespec1);
 475     filespec2len = strlen(filespec2);
 476
 477 # if __INITIAL_POINTER_SIZE == 64
 478     /* Copy the file names to storage with a 32-bit pointer. */
 479     filespec1_32p = filespec1_32;
 480     filespec2_32p = filespec2_32;
 481     strcpy(filespec1_32p, filespec1);
 482     strcpy(filespec2_32p, filespec2);
 483 # endif                         /* __INITIAL_POINTER_SIZE == 64 [else] */
 484
 485     fab = cc$rms_fab;
 486     nam = CC_RMS_NAMX;
 487
 488     FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
 489     FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len;
 490     FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
 491     FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len;
 492     NAMX_DNA_FNA_SET(fab)
 493
 494         nam.NAMX_ESA = esa;
 495     nam.NAMX_ESS = NAMX_MAXRSS;
 496     nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD;
 497     SET_NAMX_NO_SHORT_UPCASE(nam);
 498
 499     fab.FAB_NAMX = &nam;
 500
 501     status = sys$parse(&fab, 0, 0);
 502
 503     if (!$VMS_STATUS_SUCCESS(status)) {
 504         unsigned short length;
 505         char errstring[257];
 506         struct dsc$descriptor_s errstring_dsc;
 507
 508         errstring_dsc.dsc$w_length = sizeof(errstring);
 509         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 510         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 511         errstring_dsc.dsc$a_pointer = errstring;
 512
 513         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 514
 515         if (!$VMS_STATUS_SUCCESS(status))
 516             lib$signal(status); /* This is really bad.  Abort! */
 517         else {
 518             errstring[length] = '\0';
 519
 520             DSOerr(DSO_F_VMS_MERGER, DSO_R_FAILURE);
 521             ERR_add_error_data(7,
 522                                "filespec \"", filespec1, "\", ",
 523                                "defaults \"", filespec2, "\": ", errstring);
 524         }
 525         return (NULL);
 526     }
 527
 528     merged = OPENSSL_malloc(nam.NAMX_ESL + 1);
 529     if (!merged)
 530         goto malloc_err;
 531     strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL);
 532     merged[nam.NAMX_ESL] = '\0';
 533     return (merged);
 534  malloc_err:
 535     DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE);
 536 }
 537
 538 static char *vms_name_converter(DSO *dso, const char *filename)
 539 {
 540     int len = strlen(filename);
 541     char *not_translated = OPENSSL_malloc(len + 1);
 542     if (not_translated)
 543         strcpy(not_translated, filename);
 544     return (not_translated);
 545 }
 546
 547 #endif                          /* OPENSSL_SYS_VMS */