2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
63 #pragma message disable DOLLARID
64 #include <lib$routines.h>
65 #include <libfisdef.h>
71 #include <openssl/dso.h>
74 DSO_METHOD *DSO_METHOD_vms(void)
79 #pragma message disable DOLLARID
81 static int vms_load(DSO *dso);
82 static int vms_unload(DSO *dso);
83 static void *vms_bind_var(DSO *dso, const char *symname);
84 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname);
86 static int vms_unbind_var(DSO *dso, char *symname, void *symptr);
87 static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
88 static int vms_init(DSO *dso);
89 static int vms_finish(DSO *dso);
90 static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg);
92 static char *vms_name_converter(DSO *dso);
94 static DSO_METHOD dso_meth_vms = {
95 "OpenSSL 'VMS' shared library method",
100 /* For now, "unbind" doesn't exist */
102 NULL, /* unbind_var */
103 NULL, /* unbind_func */
111 /* On VMS, the only "handle" is the file name. LIB$FIND_IMAGE_SYMBOL depends
112 * on the reference to the file name being the same for all calls regarding
113 * one shared image, so we'll just store it in an instance of the following
114 * structure and put a pointer to that instance in the meth_data stack.
116 typedef struct dso_internal_st
118 /* This should contain the name only, no directory,
119 * no extension, nothing but a name. */
120 struct dsc$descriptor_s filename_dsc;
121 char filename[FILENAME_MAX+1];
122 /* This contains whatever is not in filename, if needed.
123 * Normally not defined. */
124 struct dsc$descriptor_s imagename_dsc;
125 char imagename[FILENAME_MAX+1];
129 DSO_METHOD *DSO_METHOD_vms(void)
131 return(&dso_meth_vms);
134 static int vms_load(DSO *dso)
138 const char *sp1, *sp2; /* Search result */
140 /* A file specification may look like this:
142 * node::dev:[dir-spec]name.type;ver
144 * or (for compatibility with TOPS-20):
146 * node::dev:<dir-spec>name.type;ver
148 * and the dir-spec uses '.' as separator. Also, a dir-spec
149 * may consist of several parts, with mixed use of [] and <>:
153 * We need to split the file specification into the name and
154 * the rest (both before and after the name itself).
156 /* Start with trying to find the end of a dir-spec, and save the
157 position of the byte after in sp1 */
158 sp1 = strrchr(filename, ']');
159 sp2 = strrchr(filename, '>');
160 if (sp1 == NULL) sp1 = sp2;
161 if (sp2 != NULL && sp2 > sp1) sp1 = sp2;
162 if (sp1 == NULL) sp1 = strrchr(filename, ':');
166 sp1++; /* The byte after the found character */
167 /* Now, let's see if there's a type, and save the position in sp2 */
168 sp2 = strchr(sp1, '.');
169 /* If we found it, that's where we'll cut. Otherwise, look for a
170 version number and save the position in sp2 */
171 if (sp2 == NULL) sp2 = strchr(sp1, ';');
172 /* If there was still nothing to find, set sp2 to point at the end of
174 if (sp2 == NULL) sp2 = sp1 + strlen(sp1);
176 /* Check that we won't get buffer overflows */
177 if (sp2 - sp1 > FILENAME_MAX
178 || (sp1 - filename) + strlen(sp2) > FILENAME_MAX)
180 DSOerr(DSO_F_VMS_LOAD,DSO_R_FILENAME_TOO_BIG);
184 p = (DSO_VMS_INTERNAL *)OPENSSL_malloc(sizeof(DSO_VMS_INTERNAL));
187 DSOerr(DSO_F_VMS_LOAD,ERR_R_MALLOC_FAILURE);
191 strncpy(p->filename, sp1, sp2-sp1);
192 p->filename[sp2-sp1] = '\0';
194 strncpy(p->imagename, filename, sp1-filename);
195 p->imagename[sp1-filename] = '\0';
196 strcat(p->imagename, sp2);
198 p->filename_dsc.dsc$w_length = strlen(p->filename);
199 p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
200 p->filename_dsc.dsc$b_class = DSC$K_CLASS_S;
201 p->filename_dsc.dsc$a_pointer = p->filename;
202 p->imagename_dsc.dsc$w_length = strlen(p->imagename);
203 p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
204 p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S;
205 p->imagename_dsc.dsc$a_pointer = p->imagename;
207 if(!sk_push(dso->meth_data, (char *)p))
209 DSOerr(DSO_F_VMS_LOAD,DSO_R_STACK_ERROR);
215 /* See the comments lower down in the vms_name_converter
216 * "implementation" :-) */
217 please_break_compilation();
218 return(bother_richard);
222 /* Note that this doesn't actually unload the shared image, as there is no
223 * such thing in VMS. Next time it get loaded again, a new copy will
224 * actually be loaded.
226 static int vms_unload(DSO *dso)
231 DSOerr(DSO_F_VMS_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
234 if(sk_num(dso->meth_data) < 1)
236 p = (DSO_VMS_INTERNAL *)sk_pop(dso->meth_data);
239 DSOerr(DSO_F_VMS_UNLOAD,DSO_R_NULL_HANDLE);
247 /* We must do this in a separate function because of the way the exception
248 handler works (it makes this function return */
249 static int do_find_symbol(DSO_VMS_INTERNAL *ptr,
250 struct dsc$descriptor_s *symname_dsc, void **sym,
253 /* Make sure that signals are caught and returned instead of
254 aborting the program. The exception handler gets unestablished
255 automatically on return from this function. */
256 lib$establish(lib$sig_to_ret);
258 if(ptr->imagename_dsc.dsc$w_length)
259 return lib$find_image_symbol(&ptr->filename_dsc,
261 &ptr->imagename_dsc, flags);
263 return lib$find_image_symbol(&ptr->filename_dsc,
268 void vms_bind_sym(DSO *dso, const char *symname, void **sym)
270 DSO_VMS_INTERNAL *ptr;
272 int flags = LIB$M_FIS_MIXEDCASE;
273 struct dsc$descriptor_s symname_dsc;
276 symname_dsc.dsc$w_length = strlen(symname);
277 symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
278 symname_dsc.dsc$b_class = DSC$K_CLASS_S;
279 symname_dsc.dsc$a_pointer = (char *)symname; /* The cast is needed */
281 if((dso == NULL) || (symname == NULL))
283 DSOerr(DSO_F_VMS_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
286 if(sk_num(dso->meth_data) < 1)
288 DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_STACK_ERROR);
291 ptr = (DSO_VMS_INTERNAL *)sk_value(dso->meth_data,
292 sk_num(dso->meth_data) - 1);
295 DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_NULL_HANDLE);
299 if(dso->flags & DSO_FLAG_UPCASE_SYMBOL) flags = 0;
301 status = do_find_symbol(ptr, &symname_dsc, sym, flags);
303 if(!$VMS_STATUS_SUCCESS(status))
305 unsigned short length;
307 struct dsc$descriptor_s errstring_dsc;
309 errstring_dsc.dsc$w_length = sizeof(errstring);
310 errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
311 errstring_dsc.dsc$b_class = DSC$K_CLASS_S;
312 errstring_dsc.dsc$a_pointer = errstring;
316 status = sys$getmsg(status, &length, &errstring_dsc, 1, 0);
318 if (!$VMS_STATUS_SUCCESS(status))
319 lib$signal(status); /* This is really bad. Abort! */
322 errstring[length] = '\0';
324 DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_SYM_FAILURE);
325 if (ptr->imagename_dsc.dsc$w_length)
326 ERR_add_error_data(9,
328 " in ", ptr->filename,
329 " (", ptr->imagename, ")",
332 ERR_add_error_data(6,
334 " in ", ptr->filename,
342 static void *vms_bind_var(DSO *dso, const char *symname)
345 vms_bind_sym(dso, symname, &sym);
349 static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname)
351 DSO_FUNC_TYPE sym = 0;
352 vms_bind_sym(dso, symname, (void **)&sym);
356 static char *vms_name_converter(DSO *dso)
358 /* Implementation note: on VMS is it preferable to do real conversions
359 * here, or to actually have it performed in-line with the bind calls
360 * (given that VMS never actually does a load except implicitly within
361 * the bind functions). Another note: normally (eg. dlfcn), the
362 * DSO_load call will either load, put the loaded filename into the DSO
363 * (which marks it effectively as "read-only"), and return success - or
364 * it will fail. VMS needs to work out what to do - otherwise DSO_load
365 * will always succeed, but leave the DSO looking unloaded (because the
366 * loaded_filename will be NULL still) and then real loading (and
367 * setting of loaded_filename) will only happen during the first bind
368 * call (which should have error checking anyway to prevent you calling
369 * it on an "unloaded" DSO - thus giving VMS *serious* grief). Richard,
370 * what do you think? Is it worth having DSO_load() try to find and pin
371 * itself to a library file (and populate loaded_filename) even though
372 * it's unecessary to actually do a load prior to the first bind call?
373 * I leave it to you ... :-) */
374 deliberately_break_compilation_here();