1 | /* |
2 | * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | #include "dso_local.h" |
11 | |
12 | #ifdef OPENSSL_SYS_VMS |
13 | |
14 | # pragma message disable DOLLARID |
15 | # include <errno.h> |
16 | # include <rms.h> |
17 | # include <lib$routines.h> |
18 | # include <libfisdef.h> |
19 | # include <stsdef.h> |
20 | # include <descrip.h> |
21 | # include <starlet.h> |
22 | # include "../vms_rms.h" |
23 | |
24 | /* Some compiler options may mask the declaration of "_malloc32". */ |
25 | # if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE |
26 | # if __INITIAL_POINTER_SIZE == 64 |
27 | # pragma pointer_size save |
28 | # pragma pointer_size 32 |
29 | void *_malloc32(__size_t); |
30 | # pragma pointer_size restore |
31 | # endif /* __INITIAL_POINTER_SIZE == 64 */ |
32 | # endif /* __INITIAL_POINTER_SIZE && defined |
33 | * _ANSI_C_SOURCE */ |
34 | |
35 | # pragma message disable DOLLARID |
36 | |
37 | static int vms_load(DSO *dso); |
38 | static int vms_unload(DSO *dso); |
39 | static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname); |
40 | static char *vms_name_converter(DSO *dso, const char *filename); |
41 | static char *vms_merger(DSO *dso, const char *filespec1, |
42 | const char *filespec2); |
43 | |
44 | static DSO_METHOD dso_meth_vms = { |
45 | "OpenSSL 'VMS' shared library method" , |
46 | vms_load, |
47 | NULL, /* unload */ |
48 | vms_bind_func, |
49 | NULL, /* ctrl */ |
50 | vms_name_converter, |
51 | vms_merger, |
52 | NULL, /* init */ |
53 | NULL, /* finish */ |
54 | NULL, /* pathbyaddr */ |
55 | NULL /* globallookup */ |
56 | }; |
57 | |
58 | /* |
59 | * On VMS, the only "handle" is the file name. LIB$FIND_IMAGE_SYMBOL depends |
60 | * on the reference to the file name being the same for all calls regarding |
61 | * one shared image, so we'll just store it in an instance of the following |
62 | * structure and put a pointer to that instance in the meth_data stack. |
63 | */ |
64 | typedef struct dso_internal_st { |
65 | /* |
66 | * This should contain the name only, no directory, no extension, nothing |
67 | * but a name. |
68 | */ |
69 | struct dsc$descriptor_s filename_dsc; |
70 | char filename[NAMX_MAXRSS + 1]; |
71 | /* |
72 | * This contains whatever is not in filename, if needed. Normally not |
73 | * defined. |
74 | */ |
75 | struct dsc$descriptor_s imagename_dsc; |
76 | char imagename[NAMX_MAXRSS + 1]; |
77 | } DSO_VMS_INTERNAL; |
78 | |
79 | DSO_METHOD *DSO_METHOD_openssl(void) |
80 | { |
81 | return &dso_meth_vms; |
82 | } |
83 | |
84 | static int vms_load(DSO *dso) |
85 | { |
86 | void *ptr = NULL; |
87 | /* See applicable comments in dso_dl.c */ |
88 | char *filename = DSO_convert_filename(dso, NULL); |
89 | |
90 | /* Ensure 32-bit pointer for "p", and appropriate malloc() function. */ |
91 | # if __INITIAL_POINTER_SIZE == 64 |
92 | # define DSO_MALLOC _malloc32 |
93 | # pragma pointer_size save |
94 | # pragma pointer_size 32 |
95 | # else /* __INITIAL_POINTER_SIZE == 64 */ |
96 | # define DSO_MALLOC OPENSSL_malloc |
97 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
98 | |
99 | DSO_VMS_INTERNAL *p = NULL; |
100 | |
101 | # if __INITIAL_POINTER_SIZE == 64 |
102 | # pragma pointer_size restore |
103 | # endif /* __INITIAL_POINTER_SIZE == 64 */ |
104 | |
105 | const char *sp1, *sp2; /* Search result */ |
106 | const char *ext = NULL; /* possible extension to add */ |
107 | |
108 | if (filename == NULL) { |
109 | DSOerr(DSO_F_VMS_LOAD, DSO_R_NO_FILENAME); |
110 | goto err; |
111 | } |
112 | |
113 | /*- |
114 | * A file specification may look like this: |
115 | * |
116 | * node::dev:[dir-spec]name.type;ver |
117 | * |
118 | * or (for compatibility with TOPS-20): |
119 | * |
120 | * node::dev:<dir-spec>name.type;ver |
121 | * |
122 | * and the dir-spec uses '.' as separator. Also, a dir-spec |
123 | * may consist of several parts, with mixed use of [] and <>: |
124 | * |
125 | * [dir1.]<dir2> |
126 | * |
127 | * We need to split the file specification into the name and |
128 | * the rest (both before and after the name itself). |
129 | */ |
130 | /* |
131 | * Start with trying to find the end of a dir-spec, and save the position |
132 | * of the byte after in sp1 |
133 | */ |
134 | sp1 = strrchr(filename, ']'); |
135 | sp2 = strrchr(filename, '>'); |
136 | if (sp1 == NULL) |
137 | sp1 = sp2; |
138 | if (sp2 != NULL && sp2 > sp1) |
139 | sp1 = sp2; |
140 | if (sp1 == NULL) |
141 | sp1 = strrchr(filename, ':'); |
142 | if (sp1 == NULL) |
143 | sp1 = filename; |
144 | else |
145 | sp1++; /* The byte after the found character */ |
146 | /* Now, let's see if there's a type, and save the position in sp2 */ |
147 | sp2 = strchr(sp1, '.'); |
148 | /* |
149 | * If there is a period and the next character is a semi-colon, |
150 | * we need to add an extension |
151 | */ |
152 | if (sp2 != NULL && sp2[1] == ';') |
153 | ext = ".EXE" ; |
154 | /* |
155 | * If we found it, that's where we'll cut. Otherwise, look for a version |
156 | * number and save the position in sp2 |
157 | */ |
158 | if (sp2 == NULL) { |
159 | sp2 = strchr(sp1, ';'); |
160 | ext = ".EXE" ; |
161 | } |
162 | /* |
163 | * If there was still nothing to find, set sp2 to point at the end of the |
164 | * string |
165 | */ |
166 | if (sp2 == NULL) |
167 | sp2 = sp1 + strlen(sp1); |
168 | |
169 | /* Check that we won't get buffer overflows */ |
170 | if (sp2 - sp1 > FILENAME_MAX |
171 | || (sp1 - filename) + strlen(sp2) > FILENAME_MAX) { |
172 | DSOerr(DSO_F_VMS_LOAD, DSO_R_FILENAME_TOO_BIG); |
173 | goto err; |
174 | } |
175 | |
176 | p = DSO_MALLOC(sizeof(*p)); |
177 | if (p == NULL) { |
178 | DSOerr(DSO_F_VMS_LOAD, ERR_R_MALLOC_FAILURE); |
179 | goto err; |
180 | } |
181 | |
182 | strncpy(p->filename, sp1, sp2 - sp1); |
183 | p->filename[sp2 - sp1] = '\0'; |
184 | |
185 | strncpy(p->imagename, filename, sp1 - filename); |
186 | p->imagename[sp1 - filename] = '\0'; |
187 | if (ext) { |
188 | strcat(p->imagename, ext); |
189 | if (*sp2 == '.') |
190 | sp2++; |
191 | } |
192 | strcat(p->imagename, sp2); |
193 | |
194 | p->filename_dsc.dsc$w_length = strlen(p->filename); |
195 | p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T; |
196 | p->filename_dsc.dsc$b_class = DSC$K_CLASS_S; |
197 | p->filename_dsc.dsc$a_pointer = p->filename; |
198 | p->imagename_dsc.dsc$w_length = strlen(p->imagename); |
199 | p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T; |
200 | p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S; |
201 | p->imagename_dsc.dsc$a_pointer = p->imagename; |
202 | |
203 | if (!sk_void_push(dso->meth_data, (char *)p)) { |
204 | DSOerr(DSO_F_VMS_LOAD, DSO_R_STACK_ERROR); |
205 | goto err; |
206 | } |
207 | |
208 | /* Success (for now, we lie. We actually do not know...) */ |
209 | dso->loaded_filename = filename; |
210 | return 1; |
211 | err: |
212 | /* Cleanup! */ |
213 | OPENSSL_free(p); |
214 | OPENSSL_free(filename); |
215 | return 0; |
216 | } |
217 | |
218 | /* |
219 | * Note that this doesn't actually unload the shared image, as there is no |
220 | * such thing in VMS. Next time it get loaded again, a new copy will |
221 | * actually be loaded. |
222 | */ |
223 | static int vms_unload(DSO *dso) |
224 | { |
225 | DSO_VMS_INTERNAL *p; |
226 | if (dso == NULL) { |
227 | DSOerr(DSO_F_VMS_UNLOAD, ERR_R_PASSED_NULL_PARAMETER); |
228 | return 0; |
229 | } |
230 | if (sk_void_num(dso->meth_data) < 1) |
231 | return 1; |
232 | p = (DSO_VMS_INTERNAL *)sk_void_pop(dso->meth_data); |
233 | if (p == NULL) { |
234 | DSOerr(DSO_F_VMS_UNLOAD, DSO_R_NULL_HANDLE); |
235 | return 0; |
236 | } |
237 | /* Cleanup */ |
238 | OPENSSL_free(p); |
239 | return 1; |
240 | } |
241 | |
242 | /* |
243 | * We must do this in a separate function because of the way the exception |
244 | * handler works (it makes this function return |
245 | */ |
246 | static int do_find_symbol(DSO_VMS_INTERNAL *ptr, |
247 | struct dsc$descriptor_s *symname_dsc, void **sym, |
248 | unsigned long flags) |
249 | { |
250 | /* |
251 | * Make sure that signals are caught and returned instead of aborting the |
252 | * program. The exception handler gets unestablished automatically on |
253 | * return from this function. |
254 | */ |
255 | lib$establish(lib$sig_to_ret); |
256 | |
257 | if (ptr->imagename_dsc.dsc$w_length) |
258 | return lib$find_image_symbol(&ptr->filename_dsc, |
259 | symname_dsc, sym, |
260 | &ptr->imagename_dsc, flags); |
261 | else |
262 | return lib$find_image_symbol(&ptr->filename_dsc, |
263 | symname_dsc, sym, 0, flags); |
264 | } |
265 | |
266 | # ifndef LIB$M_FIS_MIXEDCASE |
267 | # define LIB$M_FIS_MIXEDCASE (1 << 4); |
268 | # endif |
269 | void vms_bind_sym(DSO *dso, const char *symname, void **sym) |
270 | { |
271 | DSO_VMS_INTERNAL *ptr; |
272 | int status = 0; |
273 | struct dsc$descriptor_s symname_dsc; |
274 | |
275 | /* Arrange 32-bit pointer to (copied) string storage, if needed. */ |
276 | # if __INITIAL_POINTER_SIZE == 64 |
277 | # define SYMNAME symname_32p |
278 | # pragma pointer_size save |
279 | # pragma pointer_size 32 |
280 | char *symname_32p; |
281 | # pragma pointer_size restore |
282 | char symname_32[NAMX_MAXRSS + 1]; |
283 | # else /* __INITIAL_POINTER_SIZE == 64 */ |
284 | # define SYMNAME ((char *) symname) |
285 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
286 | |
287 | *sym = NULL; |
288 | |
289 | if ((dso == NULL) || (symname == NULL)) { |
290 | DSOerr(DSO_F_VMS_BIND_SYM, ERR_R_PASSED_NULL_PARAMETER); |
291 | return; |
292 | } |
293 | # if __INITIAL_POINTER_SIZE == 64 |
294 | /* Copy the symbol name to storage with a 32-bit pointer. */ |
295 | symname_32p = symname_32; |
296 | strcpy(symname_32p, symname); |
297 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
298 | |
299 | symname_dsc.dsc$w_length = strlen(SYMNAME); |
300 | symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T; |
301 | symname_dsc.dsc$b_class = DSC$K_CLASS_S; |
302 | symname_dsc.dsc$a_pointer = SYMNAME; |
303 | |
304 | if (sk_void_num(dso->meth_data) < 1) { |
305 | DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_STACK_ERROR); |
306 | return; |
307 | } |
308 | ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data, |
309 | sk_void_num(dso->meth_data) - 1); |
310 | if (ptr == NULL) { |
311 | DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_NULL_HANDLE); |
312 | return; |
313 | } |
314 | |
315 | status = do_find_symbol(ptr, &symname_dsc, sym, LIB$M_FIS_MIXEDCASE); |
316 | |
317 | if (!$VMS_STATUS_SUCCESS(status)) |
318 | status = do_find_symbol(ptr, &symname_dsc, sym, 0); |
319 | |
320 | if (!$VMS_STATUS_SUCCESS(status)) { |
321 | unsigned short length; |
322 | char errstring[257]; |
323 | struct dsc$descriptor_s errstring_dsc; |
324 | |
325 | errstring_dsc.dsc$w_length = sizeof(errstring); |
326 | errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T; |
327 | errstring_dsc.dsc$b_class = DSC$K_CLASS_S; |
328 | errstring_dsc.dsc$a_pointer = errstring; |
329 | |
330 | *sym = NULL; |
331 | |
332 | status = sys$getmsg(status, &length, &errstring_dsc, 1, 0); |
333 | |
334 | if (!$VMS_STATUS_SUCCESS(status)) |
335 | lib$signal(status); /* This is really bad. Abort! */ |
336 | else { |
337 | errstring[length] = '\0'; |
338 | |
339 | DSOerr(DSO_F_VMS_BIND_SYM, DSO_R_SYM_FAILURE); |
340 | if (ptr->imagename_dsc.dsc$w_length) |
341 | ERR_add_error_data(9, |
342 | "Symbol " , symname, |
343 | " in " , ptr->filename, |
344 | " (" , ptr->imagename, ")" , |
345 | ": " , errstring); |
346 | else |
347 | ERR_add_error_data(6, |
348 | "Symbol " , symname, |
349 | " in " , ptr->filename, ": " , errstring); |
350 | } |
351 | return; |
352 | } |
353 | return; |
354 | } |
355 | |
356 | static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname) |
357 | { |
358 | DSO_FUNC_TYPE sym = 0; |
359 | vms_bind_sym(dso, symname, (void **)&sym); |
360 | return sym; |
361 | } |
362 | |
363 | static char *vms_merger(DSO *dso, const char *filespec1, |
364 | const char *filespec2) |
365 | { |
366 | int status; |
367 | int filespec1len, filespec2len; |
368 | struct FAB fab; |
369 | struct NAMX_STRUCT nam; |
370 | char esa[NAMX_MAXRSS + 1]; |
371 | char *merged; |
372 | |
373 | /* Arrange 32-bit pointer to (copied) string storage, if needed. */ |
374 | # if __INITIAL_POINTER_SIZE == 64 |
375 | # define FILESPEC1 filespec1_32p; |
376 | # define FILESPEC2 filespec2_32p; |
377 | # pragma pointer_size save |
378 | # pragma pointer_size 32 |
379 | char *filespec1_32p; |
380 | char *filespec2_32p; |
381 | # pragma pointer_size restore |
382 | char filespec1_32[NAMX_MAXRSS + 1]; |
383 | char filespec2_32[NAMX_MAXRSS + 1]; |
384 | # else /* __INITIAL_POINTER_SIZE == 64 */ |
385 | # define FILESPEC1 ((char *) filespec1) |
386 | # define FILESPEC2 ((char *) filespec2) |
387 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
388 | |
389 | if (!filespec1) |
390 | filespec1 = "" ; |
391 | if (!filespec2) |
392 | filespec2 = "" ; |
393 | filespec1len = strlen(filespec1); |
394 | filespec2len = strlen(filespec2); |
395 | |
396 | # if __INITIAL_POINTER_SIZE == 64 |
397 | /* Copy the file names to storage with a 32-bit pointer. */ |
398 | filespec1_32p = filespec1_32; |
399 | filespec2_32p = filespec2_32; |
400 | strcpy(filespec1_32p, filespec1); |
401 | strcpy(filespec2_32p, filespec2); |
402 | # endif /* __INITIAL_POINTER_SIZE == 64 [else] */ |
403 | |
404 | fab = cc$rms_fab; |
405 | nam = CC_RMS_NAMX; |
406 | |
407 | FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1; |
408 | FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len; |
409 | FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2; |
410 | FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len; |
411 | NAMX_DNA_FNA_SET(fab) |
412 | |
413 | nam.NAMX_ESA = esa; |
414 | nam.NAMX_ESS = NAMX_MAXRSS; |
415 | nam.NAMX_NOP = NAM$M_SYNCHK | NAM$M_PWD; |
416 | SET_NAMX_NO_SHORT_UPCASE(nam); |
417 | |
418 | fab.FAB_NAMX = &nam; |
419 | |
420 | status = sys$parse(&fab, 0, 0); |
421 | |
422 | if (!$VMS_STATUS_SUCCESS(status)) { |
423 | unsigned short length; |
424 | char errstring[257]; |
425 | struct dsc$descriptor_s errstring_dsc; |
426 | |
427 | errstring_dsc.dsc$w_length = sizeof(errstring); |
428 | errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T; |
429 | errstring_dsc.dsc$b_class = DSC$K_CLASS_S; |
430 | errstring_dsc.dsc$a_pointer = errstring; |
431 | |
432 | status = sys$getmsg(status, &length, &errstring_dsc, 1, 0); |
433 | |
434 | if (!$VMS_STATUS_SUCCESS(status)) |
435 | lib$signal(status); /* This is really bad. Abort! */ |
436 | else { |
437 | errstring[length] = '\0'; |
438 | |
439 | DSOerr(DSO_F_VMS_MERGER, DSO_R_FAILURE); |
440 | ERR_add_error_data(7, |
441 | "filespec \"" , filespec1, "\", " , |
442 | "defaults \"" , filespec2, "\": " , errstring); |
443 | } |
444 | return NULL; |
445 | } |
446 | |
447 | merged = OPENSSL_malloc(nam.NAMX_ESL + 1); |
448 | if (merged == NULL) |
449 | goto malloc_err; |
450 | strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL); |
451 | merged[nam.NAMX_ESL] = '\0'; |
452 | return merged; |
453 | malloc_err: |
454 | DSOerr(DSO_F_VMS_MERGER, ERR_R_MALLOC_FAILURE); |
455 | } |
456 | |
457 | static char *vms_name_converter(DSO *dso, const char *filename) |
458 | { |
459 | int len = strlen(filename); |
460 | char *not_translated = OPENSSL_malloc(len + 1); |
461 | if (not_translated != NULL) |
462 | strcpy(not_translated, filename); |
463 | return not_translated; |
464 | } |
465 | |
466 | #endif /* OPENSSL_SYS_VMS */ |
467 | |