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1 | /* dso_vms.c */ |
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> | |
ea4e4149 | 62 | #ifdef VMS |
3aa477f6 | 63 | #pragma message disable DOLLARID |
0e05f545 RL |
64 | #include <lib$routines.h> |
65 | #include <libfisdef.h> | |
66 | #include <stsdef.h> | |
67 | #include <descrip.h> | |
68 | #include <starlet.h> | |
ea4e4149 | 69 | #endif |
0e05f545 RL |
70 | #include "cryptlib.h" |
71 | #include <openssl/dso.h> | |
72 | ||
73 | #ifndef VMS | |
74 | DSO_METHOD *DSO_METHOD_vms(void) | |
75 | { | |
76 | return NULL; | |
77 | } | |
78 | #else | |
79 | #pragma message disable DOLLARID | |
80 | ||
81 | static int vms_load(DSO *dso, const char *filename); | |
82 | static int vms_unload(DSO *dso); | |
83 | static void *vms_bind_var(DSO *dso, const char *symname); | |
84 | static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname); | |
85 | #if 0 | |
86 | static int vms_unbind_var(DSO *dso, char *symname, void *symptr); | |
87 | static int vms_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr); | |
88 | static int vms_init(DSO *dso); | |
89 | static int vms_finish(DSO *dso); | |
90 | #endif | |
91 | static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg); | |
92 | ||
93 | static DSO_METHOD dso_meth_vms = { | |
94 | "OpenSSL 'VMS' shared library method", | |
95 | vms_load, | |
96 | NULL, /* unload */ | |
97 | vms_bind_var, | |
98 | vms_bind_func, | |
99 | /* For now, "unbind" doesn't exist */ | |
100 | #if 0 | |
101 | NULL, /* unbind_var */ | |
102 | NULL, /* unbind_func */ | |
103 | #endif | |
104 | vms_ctrl, | |
105 | NULL, /* init */ | |
106 | NULL /* finish */ | |
107 | }; | |
108 | ||
109 | /* On VMS, the only "handle" is the file name. LIB$FIND_IMAGE_SYMBOL depends | |
110 | * on the reference to the file name being the same for all calls regarding | |
111 | * one shared image, so we'll just store it in an instance of the following | |
112 | * structure and put a pointer to that instance in the meth_data stack. | |
113 | */ | |
114 | typedef struct dso_internal_st | |
115 | { | |
116 | /* This should contain the name only, no directory, | |
117 | * no extension, nothing but a name. */ | |
118 | struct dsc$descriptor_s filename_dsc; | |
119 | char filename[FILENAME_MAX+1]; | |
120 | /* This contains whatever is not in filename, if needed. | |
121 | * Normally not defined. */ | |
122 | struct dsc$descriptor_s imagename_dsc; | |
123 | char imagename[FILENAME_MAX+1]; | |
124 | } DSO_VMS_INTERNAL; | |
125 | ||
126 | ||
127 | DSO_METHOD *DSO_METHOD_vms(void) | |
128 | { | |
129 | return(&dso_meth_vms); | |
130 | } | |
131 | ||
132 | static int vms_load(DSO *dso, const char *filename) | |
133 | { | |
134 | DSO_VMS_INTERNAL *p; | |
135 | const char *sp1, *sp2; /* Search result */ | |
136 | ||
137 | /* A file specification may look like this: | |
138 | * | |
139 | * node::dev:[dir-spec]name.type;ver | |
140 | * | |
141 | * or (for compatibility with TOPS-20): | |
142 | * | |
143 | * node::dev:<dir-spec>name.type;ver | |
144 | * | |
145 | * and the dir-spec uses '.' as separator. Also, a dir-spec | |
146 | * may consist of several parts, with mixed use of [] and <>: | |
147 | * | |
148 | * [dir1.]<dir2> | |
149 | * | |
150 | * We need to split the file specification into the name and | |
151 | * the rest (both before and after the name itself). | |
152 | */ | |
153 | /* Start with trying to find the end of a dir-spec, and save the | |
154 | position of the byte after in sp1 */ | |
155 | sp1 = strrchr(filename, ']'); | |
156 | sp2 = strrchr(filename, '>'); | |
157 | if (sp1 == NULL) sp1 = sp2; | |
158 | if (sp2 != NULL && sp2 > sp1) sp1 = sp2; | |
159 | if (sp1 == NULL) sp1 = strrchr(filename, ':'); | |
160 | if (sp1 == NULL) | |
161 | sp1 = filename; | |
162 | else | |
163 | sp1++; /* The byte after the found character */ | |
164 | /* Now, let's see if there's a type, and save the position in sp2 */ | |
165 | sp2 = strchr(sp1, '.'); | |
166 | /* If we found it, that's where we'll cut. Otherwise, look for a | |
167 | version number and save the position in sp2 */ | |
168 | if (sp2 == NULL) sp2 = strchr(sp1, ';'); | |
169 | /* If there was still nothing to find, set sp2 to point at the end of | |
170 | the string */ | |
171 | if (sp2 == NULL) sp2 = sp1 + strlen(sp1); | |
172 | ||
173 | /* Check that we won't get buffer overflows */ | |
174 | if (sp2 - sp1 > FILENAME_MAX | |
175 | || (sp1 - filename) + strlen(sp2) > FILENAME_MAX) | |
176 | { | |
177 | DSOerr(DSO_F_VMS_LOAD,DSO_R_FILENAME_TOO_BIG); | |
178 | return(0); | |
179 | } | |
180 | ||
181 | p = (DSO_VMS_INTERNAL *)OPENSSL_malloc(sizeof(DSO_VMS_INTERNAL)); | |
182 | if(p == NULL) | |
183 | { | |
184 | DSOerr(DSO_F_VMS_LOAD,ERR_R_MALLOC_FAILURE); | |
185 | return(0); | |
186 | } | |
187 | ||
188 | strncpy(p->filename, sp1, sp2-sp1); | |
189 | p->filename[sp2-sp1] = '\0'; | |
190 | ||
191 | strncpy(p->imagename, filename, sp1-filename); | |
192 | p->imagename[sp1-filename] = '\0'; | |
193 | strcat(p->imagename, sp2); | |
194 | ||
195 | p->filename_dsc.dsc$w_length = strlen(p->filename); | |
196 | p->filename_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
197 | p->filename_dsc.dsc$b_class = DSC$K_CLASS_S; | |
198 | p->filename_dsc.dsc$a_pointer = p->filename; | |
199 | p->imagename_dsc.dsc$w_length = strlen(p->imagename); | |
200 | p->imagename_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
201 | p->imagename_dsc.dsc$b_class = DSC$K_CLASS_S; | |
202 | p->imagename_dsc.dsc$a_pointer = p->imagename; | |
203 | ||
204 | if(!sk_push(dso->meth_data, (char *)p)) | |
205 | { | |
206 | DSOerr(DSO_F_VMS_LOAD,DSO_R_STACK_ERROR); | |
207 | OPENSSL_free(p); | |
208 | return(0); | |
209 | } | |
210 | return(1); | |
211 | } | |
212 | ||
213 | /* Note that this doesn't actually unload the shared image, as there is no | |
214 | * such thing in VMS. Next time it get loaded again, a new copy will | |
215 | * actually be loaded. | |
216 | */ | |
217 | static int vms_unload(DSO *dso) | |
218 | { | |
219 | DSO_VMS_INTERNAL *p; | |
220 | if(dso == NULL) | |
221 | { | |
222 | DSOerr(DSO_F_VMS_UNLOAD,ERR_R_PASSED_NULL_PARAMETER); | |
223 | return(0); | |
224 | } | |
225 | if(sk_num(dso->meth_data) < 1) | |
226 | return(1); | |
227 | p = (DSO_VMS_INTERNAL *)sk_pop(dso->meth_data); | |
228 | if(p == NULL) | |
229 | { | |
230 | DSOerr(DSO_F_VMS_UNLOAD,DSO_R_NULL_HANDLE); | |
231 | return(0); | |
232 | } | |
233 | /* Cleanup */ | |
234 | OPENSSL_free(p); | |
235 | return(1); | |
236 | } | |
237 | ||
238 | /* We must do this in a separate function because of the way the exception | |
239 | handler works (it makes this function return */ | |
240 | static int do_find_symbol(DSO_VMS_INTERNAL *ptr, | |
241 | struct dsc$descriptor_s *symname_dsc, void **sym, | |
242 | unsigned long flags) | |
243 | { | |
244 | /* Make sure that signals are caught and returned instead of | |
245 | aborting the program. The exception handler gets unestablished | |
246 | automatically on return from this function. */ | |
247 | lib$establish(lib$sig_to_ret); | |
248 | ||
249 | if(ptr->imagename_dsc.dsc$w_length) | |
250 | return lib$find_image_symbol(&ptr->filename_dsc, | |
251 | symname_dsc, sym, | |
252 | &ptr->imagename_dsc, flags); | |
253 | else | |
254 | return lib$find_image_symbol(&ptr->filename_dsc, | |
255 | symname_dsc, sym, | |
256 | 0, flags); | |
257 | } | |
258 | ||
3aa477f6 | 259 | void vms_bind_sym(DSO *dso, const char *symname, void **sym) |
0e05f545 RL |
260 | { |
261 | DSO_VMS_INTERNAL *ptr; | |
0e05f545 RL |
262 | int status; |
263 | int flags = LIB$M_FIS_MIXEDCASE; | |
264 | struct dsc$descriptor_s symname_dsc; | |
3aa477f6 | 265 | *sym = NULL; |
0e05f545 RL |
266 | |
267 | symname_dsc.dsc$w_length = strlen(symname); | |
268 | symname_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
269 | symname_dsc.dsc$b_class = DSC$K_CLASS_S; | |
270 | symname_dsc.dsc$a_pointer = (char *)symname; /* The cast is needed */ | |
271 | ||
272 | if((dso == NULL) || (symname == NULL)) | |
273 | { | |
274 | DSOerr(DSO_F_VMS_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER); | |
3aa477f6 | 275 | return; |
0e05f545 RL |
276 | } |
277 | if(sk_num(dso->meth_data) < 1) | |
278 | { | |
279 | DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_STACK_ERROR); | |
3aa477f6 | 280 | return; |
0e05f545 RL |
281 | } |
282 | ptr = (DSO_VMS_INTERNAL *)sk_value(dso->meth_data, | |
283 | sk_num(dso->meth_data) - 1); | |
284 | if(ptr == NULL) | |
285 | { | |
286 | DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_NULL_HANDLE); | |
3aa477f6 | 287 | return; |
0e05f545 RL |
288 | } |
289 | ||
290 | if(dso->flags & DSO_FLAG_UPCASE_SYMBOL) flags = 0; | |
291 | ||
3aa477f6 | 292 | status = do_find_symbol(ptr, &symname_dsc, sym, flags); |
0e05f545 RL |
293 | |
294 | if(!$VMS_STATUS_SUCCESS(status)) | |
295 | { | |
296 | unsigned short length; | |
297 | char errstring[257]; | |
298 | struct dsc$descriptor_s errstring_dsc; | |
299 | ||
300 | errstring_dsc.dsc$w_length = sizeof(errstring); | |
301 | errstring_dsc.dsc$b_dtype = DSC$K_DTYPE_T; | |
302 | errstring_dsc.dsc$b_class = DSC$K_CLASS_S; | |
303 | errstring_dsc.dsc$a_pointer = errstring; | |
304 | ||
3aa477f6 RL |
305 | *sym = NULL; |
306 | ||
0e05f545 RL |
307 | status = sys$getmsg(status, &length, &errstring_dsc, 1, 0); |
308 | ||
309 | if (!$VMS_STATUS_SUCCESS(status)) | |
310 | lib$signal(status); /* This is really bad. Abort! */ | |
311 | else | |
312 | { | |
313 | errstring[length] = '\0'; | |
314 | ||
315 | DSOerr(DSO_F_VMS_BIND_VAR,DSO_R_SYM_FAILURE); | |
316 | if (ptr->imagename_dsc.dsc$w_length) | |
317 | ERR_add_error_data(9, | |
318 | "Symbol ", symname, | |
319 | " in ", ptr->filename, | |
320 | " (", ptr->imagename, ")", | |
321 | ": ", errstring); | |
322 | else | |
323 | ERR_add_error_data(6, | |
324 | "Symbol ", symname, | |
325 | " in ", ptr->filename, | |
326 | ": ", errstring); | |
327 | } | |
3aa477f6 | 328 | return; |
0e05f545 | 329 | } |
3aa477f6 | 330 | return; |
0e05f545 RL |
331 | } |
332 | ||
333 | static void *vms_bind_var(DSO *dso, const char *symname) | |
334 | { | |
3aa477f6 RL |
335 | void *sym = 0; |
336 | vms_bind_sym(dso, symname, &sym); | |
337 | return sym; | |
0e05f545 RL |
338 | } |
339 | ||
340 | static DSO_FUNC_TYPE vms_bind_func(DSO *dso, const char *symname) | |
341 | { | |
3aa477f6 RL |
342 | DSO_FUNC_TYPE sym = 0; |
343 | vms_bind_sym(dso, symname, &sym); | |
344 | return sym; | |
0e05f545 RL |
345 | } |
346 | ||
347 | static long vms_ctrl(DSO *dso, int cmd, long larg, void *parg) | |
348 | { | |
349 | if(dso == NULL) | |
350 | { | |
351 | DSOerr(DSO_F_VMS_CTRL,ERR_R_PASSED_NULL_PARAMETER); | |
352 | return(-1); | |
353 | } | |
354 | switch(cmd) | |
355 | { | |
356 | case DSO_CTRL_GET_FLAGS: | |
357 | return dso->flags; | |
358 | case DSO_CTRL_SET_FLAGS: | |
359 | dso->flags = (int)larg; | |
360 | return(0); | |
361 | case DSO_CTRL_OR_FLAGS: | |
362 | dso->flags |= (int)larg; | |
363 | return(0); | |
364 | default: | |
365 | break; | |
366 | } | |
367 | DSOerr(DSO_F_VMS_CTRL,DSO_R_UNKNOWN_COMMAND); | |
368 | return(-1); | |
369 | } | |
370 | ||
371 | #endif /* VMS */ |