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 #ifdef OPENSSL_SYS_VMS
  66 # pragma message disable DOLLARID
  67 # include <rms.h>
  68 # include <lib$routines.h>
  69 # include <stsdef.h>
  70 # include <descrip.h>
  71 # include <starlet.h>
  72 #endif
  73
  74 #ifndef OPENSSL_SYS_VMS
  75 DSO_METHOD *DSO_METHOD_vms(void)
  76 {
  77     return NULL;
  78 }
  79 #else
  80 # pragma message disable DOLLARID
  81
  82 static int vms_load(DSO *dso);
  83 static int vms_unload(DSO *dso);
  84 static void *vms_bind_var(DSO *dso, const char *symname);
  85 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
  86 # if 0
  87 static int vms_unbind_var(DSO *dso, char *symname, void *symptr);
  88 static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
  89 static int vms_init(DSO *dso);
  90 static int vms_finish(DSO *dso);
  91 static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);
  92 # endif
  93 static char *vms_name_converter(DSO *dso, const char *filename);
  94 static char *vms_merger(DSO *dso, const char *filespec1,
  95                         const char *filespec2);
  96
  97 static DSO_METHOD dso_meth_vms = {
  98     "OpenSSL 'VMS' shared library method",
  99     vms_load,
 100     NULL,                       /* unload */
 101     vms_bind_var,
 102     vms_bind_func,
 103 /* For now, "unbind" doesn't exist */
 104 # if 0
 105     NULL,                       /* unbind_var */
 106     NULL,                       /* unbind_func */
 107 # endif
 108     NULL,                       /* ctrl */
 109     vms_name_converter,
 110     vms_merger,
 111     NULL,                       /* init */
 112     NULL                        /* finish */
 113 };
 114
 115 /*
 116  * On VMS, the only "handle" is the file name.  LIB$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$descriptor_s filename_dsc;
 127     char filename[FILENAME_MAX + 1];
 128     /*
 129      * This contains whatever is not in filename, if needed. Normally not
 130      * defined.
 131      */
 132     struct dsc$descriptor_s imagename_dsc;
 133     char imagename[FILENAME_MAX + 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     DSO_VMS_INTERNAL *p;
 147     const char *sp1, *sp2;      /* Search result */
 148
 149     if (filename == NULL) {
 150         DSOerr(DSO_F_VMS_LOAD, DSO_R_NO_FILENAME);
 151         goto err;
 152     }
 153
 154         /*-
 155          * A file specification may look like this:
 156          *
 157          *      node::dev:[dir-spec]name.type;ver
 158          *
 159          * or (for compatibility with TOPS-20):
 160          *
 161          *      node::dev:<dir-spec>name.type;ver
 162          *
 163          * and the dir-spec uses '.' as separator.  Also, a dir-spec
 164          * may consist of several parts, with mixed use of [] and <>:
 165          *
 166          *      [dir1.]<dir2>
 167          *
 168          * We need to split the file specification into the name and
 169          * the rest (both before and after the name itself).
 170          */
 171     /*
 172      * Start with trying to find the end of a dir-spec, and save the position
 173      * of the byte after in sp1
 174      */
 175     sp1 = strrchr(filename, ']');
 176     sp2 = strrchr(filename, '>');
 177     if (sp1 == NULL)
 178         sp1 = sp2;
 179     if (sp2 != NULL && sp2 > sp1)
 180         sp1 = sp2;
 181     if (sp1 == NULL)
 182         sp1 = strrchr(filename, ':');
 183     if (sp1 == NULL)
 184         sp1 = filename;
 185     else
 186         sp1++;                  /* The byte after the found character */
 187     /* Now, let's see if there's a type, and save the position in sp2 */
 188     sp2 = strchr(sp1, '.');
 189     /*
 190      * If we found it, that's where we'll cut.  Otherwise, look for a version
 191      * number and save the position in sp2
 192      */
 193     if (sp2 == NULL)
 194         sp2 = strchr(sp1, ';');
 195     /*
 196      * If there was still nothing to find, set sp2 to point at the end of the
 197      * string
 198      */
 199     if (sp2 == NULL)
 200         sp2 = sp1 + strlen(sp1);
 201
 202     /* Check that we won't get buffer overflows */
 203     if (sp2 - sp1 > FILENAME_MAX
 204         || (sp1 - filename) + strlen(sp2) > FILENAME_MAX) {
 205         DSOerr(DSO_F_VMS_LOAD, DSO_R_FILENAME_TOO_BIG);
 206         goto err;
 207     }
 208
 209     p = (DSO_VMS_INTERNAL *)OPENSSL_malloc(sizeof(DSO_VMS_INTERNAL));
 210     if (p == NULL) {
 211         DSOerr(DSO_F_VMS_LOAD, ERR_R_MALLOC_FAILURE);
 212         goto err;
 213     }
 214
 215     strncpy(p->filename, sp1, sp2 - sp1);
 216     p->filename[sp2 - sp1] = '\0';
 217
 218     strncpy(p->imagename, filename, sp1 - filename);
 219     p->imagename[sp1 - filename] = '\0';
 220     strcat(p->imagename, sp2);
 221
 222     p->filename_dsc.dsc$w_length = strlen(p->filename);
 223     p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 224     p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
 225     p->filename_dsc.dsc$a_pointer = p->filename;
 226     p->imagename_dsc.dsc$w_length = strlen(p->imagename);
 227     p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 228     p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
 229     p->imagename_dsc.dsc$a_pointer = p->imagename;
 230
 231     if (!sk_push(dso->meth_data, (char *)p)) {
 232         DSOerr(DSO_F_VMS_LOAD, DSO_R_STACK_ERROR);
 233         goto err;
 234     }
 235
 236     /* Success (for now, we lie.  We actually do not know...) */
 237     dso->loaded_filename = filename;
 238     return (1);
 239  err:
 240     /* Cleanup! */
 241     if (p != NULL)
 242         OPENSSL_free(p);
 243     if (filename != NULL)
 244         OPENSSL_free(filename);
 245     return (0);
 246 }
 247
 248 /*
 249  * Note that this doesn't actually unload the shared image, as there is no
 250  * such thing in VMS.  Next time it get loaded again, a new copy will
 251  * actually be loaded.
 252  */
 253 static int vms_unload(DSO *dso)
 254 {
 255     DSO_VMS_INTERNAL *p;
 256     if (dso == NULL) {
 257         DSOerr(DSO_F_VMS_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
 258         return (0);
 259     }
 260     if (sk_num(dso->meth_data) < 1)
 261         return (1);
 262     p = (DSO_VMS_INTERNAL *)sk_pop(dso->meth_data);
 263     if (p == NULL) {
 264         DSOerr(DSO_F_VMS_UNLOAD, DSO_R_NULL_HANDLE);
 265         return (0);
 266     }
 267     /* Cleanup */
 268     OPENSSL_free(p);
 269     return (1);
 270 }
 271
 272 /*
 273  * We must do this in a separate function because of the way the exception
 274  * handler works (it makes this function return
 275  */
 276 static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
 277                           struct dsc$descriptor_s *symname_dsc, void **sym,
 278                           unsigned long flags)
 279 {
 280     /*
 281      * Make sure that signals are caught and returned instead of aborting the
 282      * program.  The exception handler gets unestablished automatically on
 283      * return from this function.
 284      */
 285     lib$establish(lib$sig_to_ret);
 286
 287     if (ptr->imagename_dsc.dsc$w_length)
 288         return lib$find_image_symbol(&ptr->filename_dsc,
 289                                      symname_dsc, sym,
 290                                      &ptr->imagename_dsc, flags);
 291     else
 292         return lib$find_image_symbol(&ptr->filename_dsc,
 293                                      symname_dsc, sym, 0, flags);
 294 }
 295
 296 void vms_bind_sym(DSO *dso, const char *symname, void **sym)
 297 {
 298     DSO_VMS_INTERNAL *ptr;
 299     int status;
 300 # if 0
 301     int flags = (1 << 4);       /* LIB$M_FIS_MIXEDCASE, but this symbol isn't
 302                                  * defined in VMS older than 7.0 or so */
 303 # else
 304     int flags = 0;
 305 # endif
 306     struct dsc$descriptor_s symname_dsc;
 307     *sym = NULL;
 308
 309     symname_dsc.dsc$w_length = strlen(symname);
 310     symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 311     symname_dsc.dsc$b_class = DSC$K_CLASS_S;
 312     symname_dsc.dsc$a_pointer = (char *)symname; /* The cast is needed */
 313
 314     if ((dso == NULL) || (symname == NULL)) {
 315         DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER);
 316         return;
 317     }
 318     if (sk_num(dso->meth_data) < 1) {
 319         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR);
 320         return;
 321     }
 322     ptr = (DSO_VMS_INTERNAL *)sk_value(dso->meth_data,
 323                                        sk_num(dso->meth_data) - 1);
 324     if (ptr == NULL) {
 325         DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE);
 326         return;
 327     }
 328
 329     if (dso->flags & DSO_FLAG_UPCASE_SYMBOL)
 330         flags = 0;
 331
 332     status = do_find_symbol(ptr, &symname_dsc, sym, flags);
 333
 334     if (!$VMS_STATUS_SUCCESS(status)) {
 335         unsigned short length;
 336         char errstring[257];
 337         struct dsc$descriptor_s errstring_dsc;
 338
 339         errstring_dsc.dsc$w_length = sizeof(errstring);
 340         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 341         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 342         errstring_dsc.dsc$a_pointer = errstring;
 343
 344         *sym = NULL;
 345
 346         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 347
 348         if (!$VMS_STATUS_SUCCESS(status))
 349             lib$signal(status); /* This is really bad.  Abort! */
 350         else {
 351             errstring[length] = '\0';
 352
 353             DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_SYM_FAILURE);
 354             if (ptr->imagename_dsc.dsc$w_length)
 355                 ERR_add_error_data(9,
 356                                    "Symbol ", symname,
 357                                    " in ", ptr->filename,
 358                                    " (", ptr->imagename, ")",
 359                                    ": ", errstring);
 360             else
 361                 ERR_add_error_data(6,
 362                                    "Symbol ", symname,
 363                                    " in ", ptr->filename, ": ", errstring);
 364         }
 365         return;
 366     }
 367     return;
 368 }
 369
 370 static void *vms_bind_var(DSO *dso, const char *symname)
 371 {
 372     void *sym = 0;
 373     vms_bind_sym(dso, symname, &sym);
 374     return sym;
 375 }
 376
 377 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
 378 {
 379     DSO_FUNC_TYPE sym = 0;
 380     vms_bind_sym(dso, symname, (void **)&sym);
 381     return sym;
 382 }
 383
 384 static char *vms_merger(DSO *dso, const char *filespec1,
 385                         const char *filespec2)
 386 {
 387     int status;
 388     int filespec1len, filespec2len;
 389     struct FAB fab;
 390 # ifdef NAML$C_MAXRSS
 391     struct NAML nam;
 392     char esa[NAML$C_MAXRSS];
 393 # else
 394     struct NAM nam;
 395     char esa[NAM$C_MAXRSS];
 396 # endif
 397     char *merged;
 398
 399     if (!filespec1)
 400         filespec1 = "";
 401     if (!filespec2)
 402         filespec2 = "";
 403     filespec1len = strlen(filespec1);
 404     filespec2len = strlen(filespec2);
 405
 406     fab = cc$rms_fab;
 407 # ifdef NAML$C_MAXRSS
 408     nam = cc$rms_naml;
 409 # else
 410     nam = cc$rms_nam;
 411 # endif
 412
 413     fab.fab$l_fna = (char *)filespec1;
 414     fab.fab$b_fns = filespec1len;
 415     fab.fab$l_dna = (char *)filespec2;
 416     fab.fab$b_dns = filespec2len;
 417 # ifdef NAML$C_MAXRSS
 418     if (filespec1len > NAM$C_MAXRSS) {
 419         fab.fab$l_fna = 0;
 420         fab.fab$b_fns = 0;
 421         nam.naml$l_long_filename = (char *)filespec1;
 422         nam.naml$l_long_filename_size = filespec1len;
 423     }
 424     if (filespec2len > NAM$C_MAXRSS) {
 425         fab.fab$l_dna = 0;
 426         fab.fab$b_dns = 0;
 427         nam.naml$l_long_defname = (char *)filespec2;
 428         nam.naml$l_long_defname_size = filespec2len;
 429     }
 430     nam.naml$l_esa = esa;
 431     nam.naml$b_ess = NAM$C_MAXRSS;
 432     nam.naml$l_long_expand = esa;
 433     nam.naml$l_long_expand_alloc = sizeof(esa);
 434     nam.naml$b_nop = NAM$M_SYNCHK | NAM$M_PWD;
 435     nam.naml$v_no_short_upcase = 1;
 436     fab.fab$l_naml = &nam;
 437 # else
 438     nam.nam$l_esa = esa;
 439     nam.nam$b_ess = NAM$C_MAXRSS;
 440     nam.nam$b_nop = NAM$M_SYNCHK | NAM$M_PWD;
 441     fab.fab$l_nam = &nam;
 442 # endif
 443
 444     status = sys$parse(&fab, 0, 0);
 445
 446     if (!$VMS_STATUS_SUCCESS(status)) {
 447         unsigned short length;
 448         char errstring[257];
 449         struct dsc$descriptor_s errstring_dsc;
 450
 451         errstring_dsc.dsc$w_length = sizeof(errstring);
 452         errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 453         errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
 454         errstring_dsc.dsc$a_pointer = errstring;
 455
 456         status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
 457
 458         if (!$VMS_STATUS_SUCCESS(status))
 459             lib$signal(status); /* This is really bad.  Abort! */
 460         else {
 461             errstring[length] = '\0';
 462
 463             DSOerr(DSO_F_VMS_MERGER, DSO_R_FAILURE);
 464             ERR_add_error_data(7,
 465                                "filespec \"", filespec1, "\", ",
 466                                "defaults \"", filespec2, "\": ", errstring);
 467         }
 468         return (NULL);
 469     }
 470 # ifdef NAML$C_MAXRSS
 471     if (nam.naml$l_long_expand_size) {
 472         merged = OPENSSL_malloc(nam.naml$l_long_expand_size + 1);
 473         if (!merged)
 474             goto malloc_err;
 475         strncpy(merged, nam.naml$l_long_expand, nam.naml$l_long_expand_size);
 476         merged[nam.naml$l_long_expand_size] = '\0';
 477     } else {
 478         merged = OPENSSL_malloc(nam.naml$b_esl + 1);
 479         if (!merged)
 480             goto malloc_err;
 481         strncpy(merged, nam.naml$l_esa, nam.naml$b_esl);
 482         merged[nam.naml$b_esl] = '\0';
 483     }
 484 # else
 485     merged = OPENSSL_malloc(nam.nam$b_esl + 1);
 486     if (!merged)
 487         goto malloc_err;
 488     strncpy(merged, nam.nam$l_esa, nam.nam$b_esl);
 489     merged[nam.nam$b_esl] = '\0';
 490 # endif
 491     return (merged);
 492  malloc_err:
 493     DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE);
 494 }
 495
 496 static char *vms_name_converter(DSO *dso, const char *filename)
 497 {
 498     int len = strlen(filename);
 499     char *not_translated = OPENSSL_malloc(len + 1);
 500     strcpy(not_translated, filename);
 501     return (not_translated);
 502 }
 503
 504 #endif                          /* OPENSSL_SYS_VMS */