summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/dso/dso_dlfcn.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/lib/libcrypto/dso/dso_dlfcn.c486
1 files changed, 0 insertions, 486 deletions
diff --git a/src/lib/libcrypto/dso/dso_dlfcn.c b/src/lib/libcrypto/dso/dso_dlfcn.c
deleted file mode 100644
index e78004903c..0000000000
--- a/src/lib/libcrypto/dso/dso_dlfcn.c
+++ /dev/null
@@ -1,486 +0,0 @@
1/* dso_dlfcn.c -*- mode:C; c-file-style: "eay" -*- */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) 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/* We need to do this early, because stdio.h includes the header files
60 that handle _GNU_SOURCE and other similar macros. Defining it later
61 is simply too late, because those headers are protected from re-
62 inclusion. */
63#ifdef __linux
64# ifndef _GNU_SOURCE
65# define _GNU_SOURCE /* make sure dladdr is declared */
66# endif
67#endif
68
69#include <stdio.h>
70#include "cryptlib.h"
71#include <openssl/dso.h>
72
73#ifndef DSO_DLFCN
74DSO_METHOD *DSO_METHOD_dlfcn(void)
75 {
76 return NULL;
77 }
78#else
79
80#ifdef HAVE_DLFCN_H
81# ifdef __osf__
82# define __EXTENSIONS__
83# endif
84# include <dlfcn.h>
85# define HAVE_DLINFO 1
86# if defined(_AIX) || defined(__CYGWIN__) || \
87 defined(__SCO_VERSION__) || defined(_SCO_ELF) || \
88 (defined(__osf__) && !defined(RTLD_NEXT)) || \
89 (defined(__OpenBSD__) && (!defined(__ELF__) || !defined(RTLD_SELF)))
90# undef HAVE_DLINFO
91# endif
92#endif
93
94/* Part of the hack in "dlfcn_load" ... */
95#define DSO_MAX_TRANSLATED_SIZE 256
96
97static int dlfcn_load(DSO *dso);
98static int dlfcn_unload(DSO *dso);
99static void *dlfcn_bind_var(DSO *dso, const char *symname);
100static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname);
101#if 0
102static int dlfcn_unbind(DSO *dso, char *symname, void *symptr);
103static int dlfcn_init(DSO *dso);
104static int dlfcn_finish(DSO *dso);
105static long dlfcn_ctrl(DSO *dso, int cmd, long larg, void *parg);
106#endif
107static char *dlfcn_name_converter(DSO *dso, const char *filename);
108static char *dlfcn_merger(DSO *dso, const char *filespec1,
109 const char *filespec2);
110static int dlfcn_pathbyaddr(void *addr,char *path,int sz);
111static void *dlfcn_globallookup(const char *name);
112
113static DSO_METHOD dso_meth_dlfcn = {
114 "OpenSSL 'dlfcn' shared library method",
115 dlfcn_load,
116 dlfcn_unload,
117 dlfcn_bind_var,
118 dlfcn_bind_func,
119/* For now, "unbind" doesn't exist */
120#if 0
121 NULL, /* unbind_var */
122 NULL, /* unbind_func */
123#endif
124 NULL, /* ctrl */
125 dlfcn_name_converter,
126 dlfcn_merger,
127 NULL, /* init */
128 NULL, /* finish */
129 dlfcn_pathbyaddr,
130 dlfcn_globallookup
131 };
132
133DSO_METHOD *DSO_METHOD_dlfcn(void)
134 {
135 return(&dso_meth_dlfcn);
136 }
137
138/* Prior to using the dlopen() function, we should decide on the flag
139 * we send. There's a few different ways of doing this and it's a
140 * messy venn-diagram to match up which platforms support what. So
141 * as we don't have autoconf yet, I'm implementing a hack that could
142 * be hacked further relatively easily to deal with cases as we find
143 * them. Initially this is to cope with OpenBSD. */
144#if defined(__OpenBSD__) || defined(__NetBSD__)
145# ifdef DL_LAZY
146# define DLOPEN_FLAG DL_LAZY
147# else
148# ifdef RTLD_NOW
149# define DLOPEN_FLAG RTLD_NOW
150# else
151# define DLOPEN_FLAG 0
152# endif
153# endif
154#else
155# ifdef OPENSSL_SYS_SUNOS
156# define DLOPEN_FLAG 1
157# else
158# define DLOPEN_FLAG RTLD_NOW /* Hope this works everywhere else */
159# endif
160#endif
161
162/* For this DSO_METHOD, our meth_data STACK will contain;
163 * (i) the handle (void*) returned from dlopen().
164 */
165
166static int dlfcn_load(DSO *dso)
167 {
168 void *ptr = NULL;
169 /* See applicable comments in dso_dl.c */
170 char *filename = DSO_convert_filename(dso, NULL);
171 int flags = DLOPEN_FLAG;
172
173 if(filename == NULL)
174 {
175 DSOerr(DSO_F_DLFCN_LOAD,DSO_R_NO_FILENAME);
176 goto err;
177 }
178
179#ifdef RTLD_GLOBAL
180 if (dso->flags & DSO_FLAG_GLOBAL_SYMBOLS)
181 flags |= RTLD_GLOBAL;
182#endif
183 ptr = dlopen(filename, flags);
184 if(ptr == NULL)
185 {
186 DSOerr(DSO_F_DLFCN_LOAD,DSO_R_LOAD_FAILED);
187 ERR_add_error_data(4, "filename(", filename, "): ", dlerror());
188 goto err;
189 }
190 if(!sk_void_push(dso->meth_data, (char *)ptr))
191 {
192 DSOerr(DSO_F_DLFCN_LOAD,DSO_R_STACK_ERROR);
193 goto err;
194 }
195 /* Success */
196 dso->loaded_filename = filename;
197 return(1);
198err:
199 /* Cleanup! */
200 if(filename != NULL)
201 OPENSSL_free(filename);
202 if(ptr != NULL)
203 dlclose(ptr);
204 return(0);
205}
206
207static int dlfcn_unload(DSO *dso)
208 {
209 void *ptr;
210 if(dso == NULL)
211 {
212 DSOerr(DSO_F_DLFCN_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
213 return(0);
214 }
215 if(sk_void_num(dso->meth_data) < 1)
216 return(1);
217 ptr = sk_void_pop(dso->meth_data);
218 if(ptr == NULL)
219 {
220 DSOerr(DSO_F_DLFCN_UNLOAD,DSO_R_NULL_HANDLE);
221 /* Should push the value back onto the stack in
222 * case of a retry. */
223 sk_void_push(dso->meth_data, ptr);
224 return(0);
225 }
226 /* For now I'm not aware of any errors associated with dlclose() */
227 dlclose(ptr);
228 return(1);
229 }
230
231static void *dlfcn_bind_var(DSO *dso, const char *symname)
232 {
233 void *ptr, *sym;
234
235 if((dso == NULL) || (symname == NULL))
236 {
237 DSOerr(DSO_F_DLFCN_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
238 return(NULL);
239 }
240 if(sk_void_num(dso->meth_data) < 1)
241 {
242 DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_STACK_ERROR);
243 return(NULL);
244 }
245 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
246 if(ptr == NULL)
247 {
248 DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_NULL_HANDLE);
249 return(NULL);
250 }
251 sym = dlsym(ptr, symname);
252 if(sym == NULL)
253 {
254 DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_SYM_FAILURE);
255 ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
256 return(NULL);
257 }
258 return(sym);
259 }
260
261static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname)
262 {
263 void *ptr;
264 union {
265 DSO_FUNC_TYPE sym;
266 void *dlret;
267 } u;
268
269 if((dso == NULL) || (symname == NULL))
270 {
271 DSOerr(DSO_F_DLFCN_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
272 return(NULL);
273 }
274 if(sk_void_num(dso->meth_data) < 1)
275 {
276 DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_STACK_ERROR);
277 return(NULL);
278 }
279 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
280 if(ptr == NULL)
281 {
282 DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_NULL_HANDLE);
283 return(NULL);
284 }
285 u.dlret = dlsym(ptr, symname);
286 if(u.dlret == NULL)
287 {
288 DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_SYM_FAILURE);
289 ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
290 return(NULL);
291 }
292 return u.sym;
293 }
294
295static char *dlfcn_merger(DSO *dso, const char *filespec1,
296 const char *filespec2)
297 {
298 char *merged;
299 size_t len;
300
301 if(!filespec1 && !filespec2)
302 {
303 DSOerr(DSO_F_DLFCN_MERGER,
304 ERR_R_PASSED_NULL_PARAMETER);
305 return(NULL);
306 }
307 /* If the first file specification is a rooted path, it rules.
308 same goes if the second file specification is missing. */
309 if (!filespec2 || (filespec1 != NULL && filespec1[0] == '/'))
310 {
311 len = strlen(filespec1) + 1;
312 merged = OPENSSL_malloc(len);
313 if(!merged)
314 {
315 DSOerr(DSO_F_DLFCN_MERGER, ERR_R_MALLOC_FAILURE);
316 return(NULL);
317 }
318 strlcpy(merged, filespec1, len);
319 }
320 /* If the first file specification is missing, the second one rules. */
321 else if (!filespec1)
322 {
323 len = strlen(filespec2) + 1;
324 merged = OPENSSL_malloc(strlen(filespec2) + 1);
325 if(!merged)
326 {
327 DSOerr(DSO_F_DLFCN_MERGER,
328 ERR_R_MALLOC_FAILURE);
329 return(NULL);
330 }
331 strlcpy(merged, filespec2, len);
332 }
333 else
334 /* This part isn't as trivial as it looks. It assumes that
335 the second file specification really is a directory, and
336 makes no checks whatsoever. Therefore, the result becomes
337 the concatenation of filespec2 followed by a slash followed
338 by filespec1. */
339 {
340 int spec2len, len;
341
342 spec2len = strlen(filespec2);
343 len = spec2len + (filespec1 ? strlen(filespec1) : 0);
344
345 if(filespec2 && filespec2[spec2len - 1] == '/')
346 {
347 spec2len--;
348 len--;
349 }
350 merged = OPENSSL_malloc(len + 2);
351 if(!merged)
352 {
353 DSOerr(DSO_F_DLFCN_MERGER,
354 ERR_R_MALLOC_FAILURE);
355 return(NULL);
356 }
357 strlcpy(merged, filespec2, len + 2);
358 merged[spec2len] = '/';
359 strlcpy(&merged[spec2len + 1], filespec1, len + 1 - spec2len);
360 }
361 return(merged);
362 }
363
364#ifdef OPENSSL_SYS_MACOSX
365#define DSO_ext ".dylib"
366#define DSO_extlen 6
367#else
368#define DSO_ext ".so"
369#define DSO_extlen 3
370#endif
371
372
373static char *dlfcn_name_converter(DSO *dso, const char *filename)
374 {
375 char *translated;
376 int len, rsize, transform;
377
378 len = strlen(filename);
379 rsize = len + 1;
380 transform = (strstr(filename, "/") == NULL);
381 if(transform)
382 {
383 /* We will convert this to "%s.so" or "lib%s.so" etc */
384 rsize += DSO_extlen; /* The length of ".so" */
385 if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
386 rsize += 3; /* The length of "lib" */
387 }
388 translated = OPENSSL_malloc(rsize);
389 if(translated == NULL)
390 {
391 DSOerr(DSO_F_DLFCN_NAME_CONVERTER,
392 DSO_R_NAME_TRANSLATION_FAILED);
393 return(NULL);
394 }
395 if(transform)
396 {
397 if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
398 snprintf(translated, rsize, "lib%s" DSO_ext, filename);
399 else
400 snprintf(translated, rsize, "%s" DSO_ext, filename);
401 }
402 else
403 snprintf(translated, rsize, "%s", filename);
404 return(translated);
405 }
406
407#if defined(__sgi) && !defined(__OpenBSD__)
408/*
409This is a quote from IRIX manual for dladdr(3c):
410
411 <dlfcn.h> does not contain a prototype for dladdr or definition of
412 Dl_info. The #include <dlfcn.h> in the SYNOPSIS line is traditional,
413 but contains no dladdr prototype and no IRIX library contains an
414 implementation. Write your own declaration based on the code below.
415
416 The following code is dependent on internal interfaces that are not
417 part of the IRIX compatibility guarantee; however, there is no future
418 intention to change this interface, so on a practical level, the code
419 below is safe to use on IRIX.
420*/
421#include <rld_interface.h>
422#ifndef _RLD_INTERFACE_DLFCN_H_DLADDR
423#define _RLD_INTERFACE_DLFCN_H_DLADDR
424typedef struct Dl_info {
425 const char * dli_fname;
426 void * dli_fbase;
427 const char * dli_sname;
428 void * dli_saddr;
429 int dli_version;
430 int dli_reserved1;
431 long dli_reserved[4];
432} Dl_info;
433#else
434typedef struct Dl_info Dl_info;
435#endif
436#define _RLD_DLADDR 14
437
438static int dladdr(void *address, Dl_info *dl)
439{
440 void *v;
441 v = _rld_new_interface(_RLD_DLADDR,address,dl);
442 return (int)v;
443}
444#endif /* __sgi */
445
446static int dlfcn_pathbyaddr(void *addr,char *path,int sz)
447 {
448#ifdef HAVE_DLINFO
449 Dl_info dli;
450 int len;
451
452 if (addr == NULL)
453 {
454 union { int(*f)(void*,char*,int); void *p; } t =
455 { dlfcn_pathbyaddr };
456 addr = t.p;
457 }
458
459 if (dladdr(addr,&dli))
460 {
461 len = (int)strlen(dli.dli_fname);
462 if (sz <= 0) return len+1;
463 if (len >= sz) len=sz-1;
464 memcpy(path,dli.dli_fname,len);
465 path[len++]=0;
466 return len;
467 }
468
469 ERR_add_error_data(4, "dlfcn_pathbyaddr(): ", dlerror());
470#endif
471 return -1;
472 }
473
474static void *dlfcn_globallookup(const char *name)
475 {
476 void *ret = NULL,*handle = dlopen(NULL,RTLD_LAZY);
477
478 if (handle)
479 {
480 ret = dlsym(handle,name);
481 dlclose(handle);
482 }
483
484 return ret;
485 }
486#endif /* DSO_DLFCN */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-24 02:34:54 +0000