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-rw-r--r--src/lib/libcrypto/dso/dso_dl.c395
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diff --git a/src/lib/libcrypto/dso/dso_dl.c b/src/lib/libcrypto/dso/dso_dl.c
deleted file mode 100644
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--- a/src/lib/libcrypto/dso/dso_dl.c
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1/* dso_dl.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 "cryptlib.h"
61#include <openssl/dso.h>
62
63#ifndef DSO_DL
64DSO_METHOD *DSO_METHOD_dl(void)
65 {
66 return NULL;
67 }
68#else
69
70#include <dl.h>
71
72/* Part of the hack in "dl_load" ... */
73#define DSO_MAX_TRANSLATED_SIZE 256
74
75static int dl_load(DSO *dso);
76static int dl_unload(DSO *dso);
77static void *dl_bind_var(DSO *dso, const char *symname);
78static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname);
79#if 0
80static int dl_unbind_var(DSO *dso, char *symname, void *symptr);
81static int dl_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
82static int dl_init(DSO *dso);
83static int dl_finish(DSO *dso);
84static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg);
85#endif
86static char *dl_name_converter(DSO *dso, const char *filename);
87static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2);
88static int dl_pathbyaddr(void *addr,char *path,int sz);
89static void *dl_globallookup(const char *name);
90
91static DSO_METHOD dso_meth_dl = {
92 "OpenSSL 'dl' shared library method",
93 dl_load,
94 dl_unload,
95 dl_bind_var,
96 dl_bind_func,
97/* For now, "unbind" doesn't exist */
98#if 0
99 NULL, /* unbind_var */
100 NULL, /* unbind_func */
101#endif
102 NULL, /* ctrl */
103 dl_name_converter,
104 dl_merger,
105 NULL, /* init */
106 NULL, /* finish */
107 dl_pathbyaddr,
108 dl_globallookup
109 };
110
111DSO_METHOD *DSO_METHOD_dl(void)
112 {
113 return(&dso_meth_dl);
114 }
115
116/* For this DSO_METHOD, our meth_data STACK will contain;
117 * (i) the handle (shl_t) returned from shl_load().
118 * NB: I checked on HPUX11 and shl_t is itself a pointer
119 * type so the cast is safe.
120 */
121
122static int dl_load(DSO *dso)
123 {
124 shl_t ptr = NULL;
125 /* We don't do any fancy retries or anything, just take the method's
126 * (or DSO's if it has the callback set) best translation of the
127 * platform-independant filename and try once with that. */
128 char *filename= DSO_convert_filename(dso, NULL);
129
130 if(filename == NULL)
131 {
132 DSOerr(DSO_F_DL_LOAD,DSO_R_NO_FILENAME);
133 goto err;
134 }
135 ptr = shl_load(filename, BIND_IMMEDIATE |
136 (dso->flags&DSO_FLAG_NO_NAME_TRANSLATION?0:DYNAMIC_PATH), 0L);
137 if(ptr == NULL)
138 {
139 DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED);
140 ERR_add_error_data(4, "filename(", filename, "): ",
141 strerror(errno));
142 goto err;
143 }
144 if(!sk_push(dso->meth_data, (char *)ptr))
145 {
146 DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR);
147 goto err;
148 }
149 /* Success, stick the converted filename we've loaded under into the DSO
150 * (it also serves as the indicator that we are currently loaded). */
151 dso->loaded_filename = filename;
152 return(1);
153err:
154 /* Cleanup! */
155 if(filename != NULL)
156 OPENSSL_free(filename);
157 if(ptr != NULL)
158 shl_unload(ptr);
159 return(0);
160 }
161
162static int dl_unload(DSO *dso)
163 {
164 shl_t ptr;
165 if(dso == NULL)
166 {
167 DSOerr(DSO_F_DL_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
168 return(0);
169 }
170 if(sk_num(dso->meth_data) < 1)
171 return(1);
172 /* Is this statement legal? */
173 ptr = (shl_t)sk_pop(dso->meth_data);
174 if(ptr == NULL)
175 {
176 DSOerr(DSO_F_DL_UNLOAD,DSO_R_NULL_HANDLE);
177 /* Should push the value back onto the stack in
178 * case of a retry. */
179 sk_push(dso->meth_data, (char *)ptr);
180 return(0);
181 }
182 shl_unload(ptr);
183 return(1);
184 }
185
186static void *dl_bind_var(DSO *dso, const char *symname)
187 {
188 shl_t ptr;
189 void *sym;
190
191 if((dso == NULL) || (symname == NULL))
192 {
193 DSOerr(DSO_F_DL_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
194 return(NULL);
195 }
196 if(sk_num(dso->meth_data) < 1)
197 {
198 DSOerr(DSO_F_DL_BIND_VAR,DSO_R_STACK_ERROR);
199 return(NULL);
200 }
201 ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
202 if(ptr == NULL)
203 {
204 DSOerr(DSO_F_DL_BIND_VAR,DSO_R_NULL_HANDLE);
205 return(NULL);
206 }
207 if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
208 {
209 DSOerr(DSO_F_DL_BIND_VAR,DSO_R_SYM_FAILURE);
210 ERR_add_error_data(4, "symname(", symname, "): ",
211 strerror(errno));
212 return(NULL);
213 }
214 return(sym);
215 }
216
217static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname)
218 {
219 shl_t ptr;
220 void *sym;
221
222 if((dso == NULL) || (symname == NULL))
223 {
224 DSOerr(DSO_F_DL_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
225 return(NULL);
226 }
227 if(sk_num(dso->meth_data) < 1)
228 {
229 DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_STACK_ERROR);
230 return(NULL);
231 }
232 ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
233 if(ptr == NULL)
234 {
235 DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_NULL_HANDLE);
236 return(NULL);
237 }
238 if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
239 {
240 DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_SYM_FAILURE);
241 ERR_add_error_data(4, "symname(", symname, "): ",
242 strerror(errno));
243 return(NULL);
244 }
245 return((DSO_FUNC_TYPE)sym);
246 }
247
248static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2)
249 {
250 char *merged;
251
252 if(!filespec1 && !filespec2)
253 {
254 DSOerr(DSO_F_DL_MERGER,
255 ERR_R_PASSED_NULL_PARAMETER);
256 return(NULL);
257 }
258 /* If the first file specification is a rooted path, it rules.
259 same goes if the second file specification is missing. */
260 if (!filespec2 || filespec1[0] == '/')
261 {
262 size_t len = strlen(filespec1) + 1;
263 merged = OPENSSL_malloc(len);
264 if(!merged)
265 {
266 DSOerr(DSO_F_DL_MERGER,
267 ERR_R_MALLOC_FAILURE);
268 return(NULL);
269 }
270 memcpy(merged, filespec1, len);
271 }
272 /* If the first file specification is missing, the second one rules. */
273 else if (!filespec1)
274 {
275 size_t len = strlen(filespec2) + 1;
276 merged = OPENSSL_malloc(strlen(filespec2) + 1);
277 if(!merged)
278 {
279 DSOerr(DSO_F_DL_MERGER,
280 ERR_R_MALLOC_FAILURE);
281 return(NULL);
282 }
283 memcpy(merged, filespec2, len);
284 }
285 else
286 /* This part isn't as trivial as it looks. It assumes that
287 the second file specification really is a directory, and
288 makes no checks whatsoever. Therefore, the result becomes
289 the concatenation of filespec2 followed by a slash followed
290 by filespec1. */
291 {
292 size_t spec2len, len;
293
294 spec2len = (filespec2 ? strlen(filespec2) : 0);
295 len = spec2len + (filespec1 ? strlen(filespec1) : 0);
296
297 if(filespec2 && filespec2[spec2len - 1] == '/')
298 {
299 spec2len--;
300 len--;
301 }
302 merged = OPENSSL_malloc(len + 2);
303 if(!merged)
304 {
305 DSOerr(DSO_F_DL_MERGER,
306 ERR_R_MALLOC_FAILURE);
307 return(NULL);
308 }
309 strlcpy(merged, filespec2, len + 2);
310 merged[spec2len] = '/';
311 strlcpy(&merged[spec2len + 1], filespec1, 1 + len - spec2len);
312 }
313 return(merged);
314 }
315
316/* This function is identical to the one in dso_dlfcn.c, but as it is highly
317 * unlikely that both the "dl" *and* "dlfcn" variants are being compiled at the
318 * same time, there's no great duplicating the code. Figuring out an elegant
319 * way to share one copy of the code would be more difficult and would not
320 * leave the implementations independant. */
321#if defined(__hpux)
322static const char extension[] = ".sl";
323#else
324static const char extension[] = ".so";
325#endif
326static char *dl_name_converter(DSO *dso, const char *filename)
327 {
328 char *translated;
329 int len, rsize, transform;
330
331 len = strlen(filename);
332 rsize = len + 1;
333 transform = (strstr(filename, "/") == NULL);
334 {
335 /* We will convert this to "%s.s?" or "lib%s.s?" */
336 rsize += strlen(extension);/* The length of ".s?" */
337 if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
338 rsize += 3; /* The length of "lib" */
339 }
340 translated = OPENSSL_malloc(rsize);
341 if(translated == NULL)
342 {
343 DSOerr(DSO_F_DL_NAME_CONVERTER,
344 DSO_R_NAME_TRANSLATION_FAILED);
345 return(NULL);
346 }
347 if(transform)
348 {
349 if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
350 sprintf(translated, "lib%s%s", filename, extension);
351 else
352 sprintf(translated, "%s%s", filename, extension);
353 }
354 else
355 sprintf(translated, "%s", filename);
356 return(translated);
357 }
358
359static int dl_pathbyaddr(void *addr,char *path,int sz)
360 {
361 struct shl_descriptor inf;
362 int i,len;
363
364 if (addr == NULL)
365 {
366 union { int(*f)(void*,char*,int); void *p; } t =
367 { dl_pathbyaddr };
368 addr = t.p;
369 }
370
371 for (i=-1;shl_get_r(i,&inf)==0;i++)
372 {
373 if (((size_t)addr >= inf.tstart && (size_t)addr < inf.tend) ||
374 ((size_t)addr >= inf.dstart && (size_t)addr < inf.dend))
375 {
376 len = (int)strlen(inf.filename);
377 if (sz <= 0) return len+1;
378 if (len >= sz) len=sz-1;
379 memcpy(path,inf.filename,len);
380 path[len++] = 0;
381 return len;
382 }
383 }
384
385 return -1;
386 }
387
388static void *dl_globallookup(const char *name)
389 {
390 void *ret;
391 shl_t h = NULL;
392
393 return shl_findsym(&h,name,TYPE_UNDEFINED,&ret) ? NULL : ret;
394 }
395#endif /* DSO_DL */
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