1 /* dso_vms.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
3 * project 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 <stdio.h>
60 #include <string.h>
61 #include <errno.h>
62 #include "cryptlib.h"
63 #include <openssl/dso.h>
64
65 #ifndef OPENSSL_SYS_VMS
66 DSO_METHOD *DSO_METHOD_vms(void)
67 {
68 return NULL;
69 }
70 #else
71
72 #pragma message disable DOLLARID
73 #include <rms.h>
74 #include <lib$routines.h>
75 #include <stsdef.h>
76 #include <descrip.h>
77 #include <starlet.h>
78 #include "vms_rms.h"
79
80 /* Some compiler options may mask the declaration of "_malloc32". */
81 #if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
82 # if __INITIAL_POINTER_SIZE == 64
83 # pragma pointer_size save
84 # pragma pointer_size 32
85 void * _malloc32 (__size_t);
86 # pragma pointer_size restore
87 # endif /* __INITIAL_POINTER_SIZE == 64 */
88 #endif /* __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE */
89
90
91 #pragma message disable DOLLARID
92
93 static int vms_load(DSO *dso);
94 static int vms_unload(DSO *dso);
95 static void *vms_bind_var(DSO *dso, const char *symname);
96 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
97 #if 0
98 static int vms_unbind_var(DSO *dso, char *symname, void *symptr);
99 static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
100 static int vms_init(DSO *dso);
101 static int vms_finish(DSO *dso);
102 static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);
103 #endif
104 static char *vms_name_converter(DSO *dso, const char *filename);
105 static char *vms_merger(DSO *dso, const char *filespec1,
106 const char *filespec2);
107
108 static DSO_METHOD dso_meth_vms = {
109 "OpenSSL 'VMS' shared library method",
110 vms_load,
111 NULL, /* unload */
112 vms_bind_var,
113 vms_bind_func,
114 /* For now, "unbind" doesn't exist */
115 #if 0
116 NULL, /* unbind_var */
117 NULL, /* unbind_func */
118 #endif
119 NULL, /* ctrl */
120 vms_name_converter,
121 vms_merger,
122 NULL, /* init */
123 NULL /* finish */
124 };
125
126 /* On VMS, the only "handle" is the file name. LIB$FIND_IMAGE_SYMBOL depends
127 * on the reference to the file name being the same for all calls regarding
128 * one shared image, so we'll just store it in an instance of the following
129 * structure and put a pointer to that instance in the meth_data stack.
130 */
131 typedef struct dso_internal_st
132 {
133 /* This should contain the name only, no directory,
134 * no extension, nothing but a name. */
135 struct dsc$descriptor_s filename_dsc;
136 char filename[ NAMX_MAXRSS+ 1];
137 /* This contains whatever is not in filename, if needed.
138 * Normally not defined. */
139 struct dsc$descriptor_s imagename_dsc;
140 char imagename[ NAMX_MAXRSS+ 1];
141 } DSO_VMS_INTERNAL;
142
143 DSO_METHOD *DSO_METHOD_vms(void)
144 {
145 return(&dso_meth_vms);
146 }
147
148 static int vms_load(DSO *dso)
149 {
150 void *ptr = NULL;
151 /* See applicable comments in dso_dl.c */
152 char *filename = DSO_convert_filename(dso, NULL);
153
154 /* Ensure 32-bit pointer for "p", and appropriate malloc() function. */
155 #if __INITIAL_POINTER_SIZE == 64
156 # define DSO_MALLOC _malloc32
157 # pragma pointer_size save
158 # pragma pointer_size 32
159 #else /* __INITIAL_POINTER_SIZE == 64 */
160 # define DSO_MALLOC OPENSSL_malloc
161 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
162
163 DSO_VMS_INTERNAL *p = NULL;
164
165 #if __INITIAL_POINTER_SIZE == 64
166 # pragma pointer_size restore
167 #endif /* __INITIAL_POINTER_SIZE == 64 */
168
169 const char *sp1, *sp2; /* Search result */
170
171 if(filename == NULL)
172 {
173 DSOerr(DSO_F_VMS_LOAD,DSO_R_NO_FILENAME);
174 goto err;
175 }
176
177 /* A file specification may look like this:
178 *
179 * node::dev:[dir-spec]name.type;ver
180 *
181 * or (for compatibility with TOPS-20):
182 *
183 * node::dev:<dir-spec>name.type;ver
184 *
185 * and the dir-spec uses '.' as separator. Also, a dir-spec
186 * may consist of several parts, with mixed use of [] and <>:
187 *
188 * [dir1.]<dir2>
189 *
190 * We need to split the file specification into the name and
191 * the rest (both before and after the name itself).
192 */
193 /* Start with trying to find the end of a dir-spec, and save the
194 position of the byte after in sp1 */
195 sp1 = strrchr(filename, ']');
196 sp2 = strrchr(filename, '>');
197 if (sp1 == NULL) sp1 = sp2;
198 if (sp2 != NULL && sp2 > sp1) sp1 = sp2;
199 if (sp1 == NULL) sp1 = strrchr(filename, ':');
200 if (sp1 == NULL)
201 sp1 = filename;
202 else
203 sp1++; /* The byte after the found character */
204 /* Now, let's see if there's a type, and save the position in sp2 */
205 sp2 = strchr(sp1, '.');
206 /* If we found it, that's where we'll cut. Otherwise, look for a
207 version number and save the position in sp2 */
208 if (sp2 == NULL) sp2 = strchr(sp1, ';');
209 /* If there was still nothing to find, set sp2 to point at the end of
210 the string */
211 if (sp2 == NULL) sp2 = sp1 + strlen(sp1);
212
213 /* Check that we won't get buffer overflows */
214 if (sp2 - sp1 > FILENAME_MAX
215 || (sp1 - filename) + strlen(sp2) > FILENAME_MAX)
216 {
217 DSOerr(DSO_F_VMS_LOAD,DSO_R_FILENAME_TOO_BIG);
218 goto err;
219 }
220
221 p = DSO_MALLOC(sizeof(DSO_VMS_INTERNAL));
222 if(p == NULL)
223 {
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 strcat(p->imagename, sp2);
234
235 p->filename_dsc.dsc$w_length = strlen(p->filename);
236 p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
237 p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
238 p->filename_dsc.dsc$a_pointer = p->filename;
239 p->imagename_dsc.dsc$w_length = strlen(p->imagename);
240 p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
241 p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
242 p->imagename_dsc.dsc$a_pointer = p->imagename;
243
244 if(!sk_void_push(dso->meth_data, (char *)p))
245 {
246 DSOerr(DSO_F_VMS_LOAD,DSO_R_STACK_ERROR);
247 goto err;
248 }
249
250 /* Success (for now, we lie. We actually do not know...) */
251 dso->loaded_filename = filename;
252 return(1);
253 err:
254 /* Cleanup! */
255 if(p != NULL)
256 OPENSSL_free(p);
257 if(filename != NULL)
258 OPENSSL_free(filename);
259 return(0);
260 }
261
262 /* Note that this doesn't actually unload the shared image, as there is no
263 * such thing in VMS. Next time it get loaded again, a new copy will
264 * actually be loaded.
265 */
266 static int vms_unload(DSO *dso)
267 {
268 DSO_VMS_INTERNAL *p;
269 if(dso == NULL)
270 {
271 DSOerr(DSO_F_VMS_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
272 return(0);
273 }
274 if(sk_void_num(dso->meth_data) < 1)
275 return(1);
276 p = (DSO_VMS_INTERNAL *)sk_void_pop(dso->meth_data);
277 if(p == NULL)
278 {
279 DSOerr(DSO_F_VMS_UNLOAD,DSO_R_NULL_HANDLE);
280 return(0);
281 }
282 /* Cleanup */
283 OPENSSL_free(p);
284 return(1);
285 }
286
287 /* We must do this in a separate function because of the way the exception
288 handler works (it makes this function return */
289 static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
290 struct dsc$descriptor_s *symname_dsc, void **sym,
291 unsigned long flags)
292 {
293 /* Make sure that signals are caught and returned instead of
294 aborting the program. The exception handler gets unestablished
295 automatically on return from this function. */
296 lib$establish(lib$sig_to_ret);
297
298 if(ptr->imagename_dsc.dsc$w_length)
299 return lib$find_image_symbol(&ptr->filename_dsc,
300 symname_dsc, sym,
301 &ptr->imagename_dsc, flags);
302 else
303 return lib$find_image_symbol(&ptr->filename_dsc,
304 symname_dsc, sym,
305 0, flags);
306 }
307
308 void vms_bind_sym(DSO *dso, const char *symname, void **sym)
309 {
310 DSO_VMS_INTERNAL *ptr;
311 int status;
312 #if 0
313 int flags = (1<<4); /* LIB$M_FIS_MIXEDCASE, but this symbol isn't
314 defined in VMS older than 7.0 or so */
315 #else
316 int flags = 0;
317 #endif
318 struct dsc$descriptor_s symname_dsc;
319
320 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
321 #if __INITIAL_POINTER_SIZE == 64
322 # define SYMNAME symname_32p
323 # pragma pointer_size save
324 # pragma pointer_size 32
325 char *symname_32p;
326 # pragma pointer_size restore
327 char symname_32[ NAMX_MAXRSS+ 1];
328 #else /* __INITIAL_POINTER_SIZE == 64 */
329 # define SYMNAME ((char *) symname)
330 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
331
332 *sym = NULL;
333
334 if((dso == NULL) || (symname == NULL))
335 {
336 DSOerr(DSO_F_VMS_BIND_SYM,ERR_R_PASSED_NULL_PARAMETER);
337 return;
338 }
339
340 #if __INITIAL_POINTER_SIZE == 64
341 /* Copy the symbol name to storage with a 32-bit pointer. */
342 symname_32p = symname_32;
343 strcpy( symname_32p, symname);
344 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
345
346 symname_dsc.dsc$w_length = strlen(SYMNAME);
347 symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
348 symname_dsc.dsc$b_class = DSC$K_CLASS_S;
349 symname_dsc.dsc$a_pointer = SYMNAME;
350
351 if(sk_void_num(dso->meth_data) < 1)
352 {
353 DSOerr(DSO_F_VMS_BIND_SYM,DSO_R_STACK_ERROR);
354 return;
355 }
356 ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
357 sk_void_num(dso->meth_data) - 1);
358 if(ptr == NULL)
359 {
360 DSOerr(DSO_F_VMS_BIND_SYM,DSO_R_NULL_HANDLE);
361 return;
362 }
363
364 if(dso->flags & DSO_FLAG_UPCASE_SYMBOL) flags = 0;
365
366 status = do_find_symbol(ptr, &symname_dsc, sym, flags);
367
368 if(!$VMS_STATUS_SUCCESS(status))
369 {
370 unsigned short length;
371 char errstring[257];
372 struct dsc$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$signal(status); /* This is really bad. Abort! */
385 else
386 {
387 errstring[length] = '\0';
388
389 DSOerr(DSO_F_VMS_BIND_SYM,DSO_R_SYM_FAILURE);
390 if (ptr->imagename_dsc.dsc$w_length)
391 ERR_add_error_data(9,
392 "Symbol ", symname,
393 " in ", ptr->filename,
394 " (", ptr->imagename, ")",
395 ": ", errstring);
396 else
397 ERR_add_error_data(6,
398 "Symbol ", symname,
399 " in ", ptr->filename,
400 ": ", errstring);
401 }
402 return;
403 }
404 return;
405 }
406
407 static void *vms_bind_var(DSO *dso, const char *symname)
408 {
409 void *sym = 0;
410 vms_bind_sym(dso, symname, &sym);
411 return sym;
412 }
413
414 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
415 {
416 DSO_FUNC_TYPE sym = 0;
417 vms_bind_sym(dso, symname, (void **)&sym);
418 return sym;
419 }
420
421
422 static char *vms_merger(DSO *dso, const char *filespec1, const char *filespec2)
423 {
424 int status;
425 int filespec1len, filespec2len;
426 struct FAB fab;
427 struct NAMX_STRUCT nam;
428 char esa[ NAMX_MAXRSS+ 1];
429 char *merged;
430
431 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
432 #if __INITIAL_POINTER_SIZE == 64
433 # define FILESPEC1 filespec1_32p;
434 # define FILESPEC2 filespec2_32p;
435 # pragma pointer_size save
436 # pragma pointer_size 32
437 char *filespec1_32p;
438 char *filespec2_32p;
439 # pragma pointer_size restore
440 char filespec1_32[ NAMX_MAXRSS+ 1];
441 char filespec2_32[ NAMX_MAXRSS+ 1];
442 #else /* __INITIAL_POINTER_SIZE == 64 */
443 # define FILESPEC1 ((char *) filespec1)
444 # define FILESPEC2 ((char *) filespec2)
445 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
446
447 if (!filespec1) filespec1 = "";
448 if (!filespec2) filespec2 = "";
449 filespec1len = strlen(filespec1);
450 filespec2len = strlen(filespec2);
451
452 #if __INITIAL_POINTER_SIZE == 64
453 /* Copy the file names to storage with a 32-bit pointer. */
454 filespec1_32p = filespec1_32;
455 filespec2_32p = filespec2_32;
456 strcpy( filespec1_32p, filespec1);
457 strcpy( filespec2_32p, filespec2);
458 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
459
460 fab = cc$rms_fab;
461 nam = CC_RMS_NAMX;
462
463 FAB_OR_NAML( fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
464 FAB_OR_NAML( fab, nam).FAB_OR_NAML_FNS = filespec1len;
465 FAB_OR_NAML( fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
466 FAB_OR_NAML( fab, nam).FAB_OR_NAML_DNS = filespec2len;
467 NAMX_DNA_FNA_SET( fab)
468
469 nam.NAMX_ESA = esa;
470 nam.NAMX_ESS = NAMX_MAXRSS;
471 nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD;
472 SET_NAMX_NO_SHORT_UPCASE( nam);
473
474 fab.FAB_NAMX = &nam;
475
476 status = sys$parse(&fab, 0, 0);
477
478 if(!$VMS_STATUS_SUCCESS(status))
479 {
480 unsigned short length;
481 char errstring[257];
482 struct dsc$descriptor_s errstring_dsc;
483
484 errstring_dsc.dsc$w_length = sizeof(errstring);
485 errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
486 errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
487 errstring_dsc.dsc$a_pointer = errstring;
488
489 status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
490
491 if (!$VMS_STATUS_SUCCESS(status))
492 lib$signal(status); /* This is really bad. Abort! */
493 else
494 {
495 errstring[length] = '\0';
496
497 DSOerr(DSO_F_VMS_MERGER,DSO_R_FAILURE);
498 ERR_add_error_data(7,
499 "filespec \"", filespec1, "\", ",
500 "defaults \"", filespec2, "\": ",
501 errstring);
502 }
503 return(NULL);
504 }
505
506 merged = OPENSSL_malloc( nam.NAMX_ESL+ 1);
507 if(!merged)
508 goto malloc_err;
509 strncpy( merged, nam.NAMX_ESA, nam.NAMX_ESL);
510 merged[ nam.NAMX_ESL] = '\0';
511 return(merged);
512 malloc_err:
513 DSOerr(DSO_F_VMS_MERGER,
514 ERR_R_MALLOC_FAILURE);
515 }
516
517 static char *vms_name_converter(DSO *dso, const char *filename)
518 {
519 int len = strlen(filename);
520 char *not_translated = OPENSSL_malloc(len+1);
521 strcpy(not_translated,filename);
522 return(not_translated);
523 }
524
525 #endif /* OPENSSL_SYS_VMS */