dso_vms.c@ 100908

最後變更在這個檔案從100908是 99366,由 vboxsync 提交於 21 月前
openssl-3.1.0: Applied and adjusted our OpenSSL changes to 3.0.7. bugref:10418
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1	/*
2	* Copyright 2000-2021 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	ERR_raise(ERR_LIB_DSO, 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	ERR_raise(ERR_LIB_DSO, DSO_R_FILENAME_TOO_BIG);
173	goto err;
174	}
175
176	p = DSO_MALLOC(sizeof(*p));
177	if (p == NULL) {
178	ERR_raise(ERR_LIB_DSO, 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	ERR_raise(ERR_LIB_DSO, 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	ERR_raise(ERR_LIB_DSO, 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	ERR_raise(ERR_LIB_DSO, 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$descriptor_s symname_dsc;
274
275	/* Arrange 32-bit pointer to (copied) string storage, if needed. */
276	# if __INITIAL_POINTER_SIZE == 64
277	# define SYMNAME symname_32p
278	# pragma pointer_size save
279	# pragma pointer_size 32
280	char *symname_32p;
281	# pragma pointer_size restore
282	char symname_32[NAMX_MAXRSS + 1];
283	# else /* __INITIAL_POINTER_SIZE == 64 */
284	# define SYMNAME ((char *) symname)
285	# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
286
287	*sym = NULL;
288
289	if ((dso == NULL) \|\| (symname == NULL)) {
290	ERR_raise(ERR_LIB_DSO, ERR_R_PASSED_NULL_PARAMETER);
291	return;
292	}
293	# if __INITIAL_POINTER_SIZE == 64
294	/* Copy the symbol name to storage with a 32-bit pointer. */
295	symname_32p = symname_32;
296	strcpy(symname_32p, symname);
297	# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
298
299	symname_dsc.dsc$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$a_pointer = SYMNAME;
303
304	if (sk_void_num(dso->meth_data) < 1) {
305	ERR_raise(ERR_LIB_DSO, DSO_R_STACK_ERROR);
306	return;
307	}
308	ptr = (DSO_VMS_INTERNAL *)sk_void_value(dso->meth_data,
309	sk_void_num(dso->meth_data) - 1);
310	if (ptr == NULL) {
311	ERR_raise(ERR_LIB_DSO, DSO_R_NULL_HANDLE);
312	return;
313	}
314
315	status = do_find_symbol(ptr, &symname_dsc, sym, LIB$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	if (ptr->imagename_dsc.dsc$w_length)
340	ERR_raise_data(ERR_LIB_DSO, DSO_R_SYM_FAILURE,
341	"Symbol %s in %s (%s): %s",
342	symname, ptr->filename, ptr->imagename,
343	errstring);
344	else
345	ERR_raise_data(ERR_LIB_DSO, DSO_R_SYM_FAILURE,
346	"Symbol %s in %s: %s",
347	symname, ptr->filename, errstring);
348	}
349	return;
350	}
351	return;
352	}
353
354	static DSO_FUNC_TYPE vms_bind_func(DSO dso, const char symname)
355	{
356	DSO_FUNC_TYPE sym = 0;
357	vms_bind_sym(dso, symname, (void **)&sym);
358	return sym;
359	}
360
361	static char vms_merger(DSO dso, const char *filespec1,
362	const char *filespec2)
363	{
364	int status;
365	int filespec1len, filespec2len;
366	struct FAB fab;
367	struct NAMX_STRUCT nam;
368	char esa[NAMX_MAXRSS + 1];
369	char *merged;
370
371	/* Arrange 32-bit pointer to (copied) string storage, if needed. */
372	# if __INITIAL_POINTER_SIZE == 64
373	# define FILESPEC1 filespec1_32p;
374	# define FILESPEC2 filespec2_32p;
375	# pragma pointer_size save
376	# pragma pointer_size 32
377	char *filespec1_32p;
378	char *filespec2_32p;
379	# pragma pointer_size restore
380	char filespec1_32[NAMX_MAXRSS + 1];
381	char filespec2_32[NAMX_MAXRSS + 1];
382	# else /* __INITIAL_POINTER_SIZE == 64 */
383	# define FILESPEC1 ((char *) filespec1)
384	# define FILESPEC2 ((char *) filespec2)
385	# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
386
387	if (!filespec1)
388	filespec1 = "";
389	if (!filespec2)
390	filespec2 = "";
391	filespec1len = strlen(filespec1);
392	filespec2len = strlen(filespec2);
393
394	# if __INITIAL_POINTER_SIZE == 64
395	/* Copy the file names to storage with a 32-bit pointer. */
396	filespec1_32p = filespec1_32;
397	filespec2_32p = filespec2_32;
398	strcpy(filespec1_32p, filespec1);
399	strcpy(filespec2_32p, filespec2);
400	# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
401
402	fab = cc$rms_fab;
403	nam = CC_RMS_NAMX;
404
405	FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNA = FILESPEC1;
406	FAB_OR_NAML(fab, nam).FAB_OR_NAML_FNS = filespec1len;
407	FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNA = FILESPEC2;
408	FAB_OR_NAML(fab, nam).FAB_OR_NAML_DNS = filespec2len;
409	NAMX_DNA_FNA_SET(fab)
410
411	nam.NAMX_ESA = esa;
412	nam.NAMX_ESS = NAMX_MAXRSS;
413	nam.NAMX_NOP = NAM$M_SYNCHK \| NAM$M_PWD;
414	SET_NAMX_NO_SHORT_UPCASE(nam);
415
416	fab.FAB_NAMX = &nam;
417
418	status = sys$parse(&fab, 0, 0);
419
420	if (!$VMS_STATUS_SUCCESS(status)) {
421	unsigned short length;
422	char errstring[257];
423	struct dsc$descriptor_s errstring_dsc;
424
425	errstring_dsc.dsc$w_length = sizeof(errstring);
426	errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
427	errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
428	errstring_dsc.dsc$a_pointer = errstring;
429
430	status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
431
432	if (!$VMS_STATUS_SUCCESS(status))
433	lib$signal(status); /* This is really bad. Abort! */
434	else {
435	errstring[length] = '\0';
436
437	ERR_raise_data(ERR_LIB_DSO, DSO_R_FAILURE,
438	"filespec \"%s\", default \"%s\": %s",
439	filespec1, filespec2, errstring);
440	}
441	return NULL;
442	}
443
444	merged = OPENSSL_malloc(nam.NAMX_ESL + 1);
445	if (merged == NULL)
446	goto malloc_err;
447	strncpy(merged, nam.NAMX_ESA, nam.NAMX_ESL);
448	merged[nam.NAMX_ESL] = '\0';
449	return merged;
450	malloc_err:
451	ERR_raise(ERR_LIB_DSO, ERR_R_MALLOC_FAILURE);
452	}
453
454	static char vms_name_converter(DSO dso, const char *filename)
455	{
456	char *translated;
457	int len, transform;
458	const char *p;
459
460	len = strlen(filename);
461
462	p = strchr(filename, ':');
463	if (p != NULL) {
464	transform = 0;
465	} else {
466	p = filename;
467	transform = (strrchr(p, '>') == NULL && strrchr(p, ']') == NULL);
468	}
469
470	if (transform) {
471	int rsize = len + sizeof(DSO_EXTENSION);
472
473	if ((translated = OPENSSL_malloc(rsize)) != NULL) {
474	p = strrchr(filename, ';');
475	if (p != NULL)
476	len = p - filename;
477	strncpy(translated, filename, len);
478	translated[len] = '\0';
479	strcat(translated, DSO_EXTENSION);
480	if (p != NULL)
481	strcat(translated, p);
482	}
483	} else {
484	translated = OPENSSL_strdup(filename);
485	}
486	return translated;
487	}
488
489	#endif /* OPENSSL_SYS_VMS */

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