1 /* crypto/cryptlib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
56 * All rights reserved.
57 *
58 * This package is an SSL implementation written
59 * by Eric Young (eay@cryptsoft.com).
60 * The implementation was written so as to conform with Netscapes SSL.
61 *
62 * This library is free for commercial and non-commercial use as long as
63 * the following conditions are aheared to. The following conditions
64 * apply to all code found in this distribution, be it the RC4, RSA,
65 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
66 * included with this distribution is covered by the same copyright terms
67 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
68 *
69 * Copyright remains Eric Young's, and as such any Copyright notices in
70 * the code are not to be removed.
71 * If this package is used in a product, Eric Young should be given attribution
72 * as the author of the parts of the library used.
73 * This can be in the form of a textual message at program startup or
74 * in documentation (online or textual) provided with the package.
75 *
76 * Redistribution and use in source and binary forms, with or without
77 * modification, are permitted provided that the following conditions
78 * are met:
79 * 1. Redistributions of source code must retain the copyright
80 * notice, this list of conditions and the following disclaimer.
81 * 2. Redistributions in binary form must reproduce the above copyright
82 * notice, this list of conditions and the following disclaimer in the
83 * documentation and/or other materials provided with the distribution.
84 * 3. All advertising materials mentioning features or use of this software
85 * must display the following acknowledgement:
86 * "This product includes cryptographic software written by
87 * Eric Young (eay@cryptsoft.com)"
88 * The word 'cryptographic' can be left out if the rouines from the library
89 * being used are not cryptographic related :-).
90 * 4. If you include any Windows specific code (or a derivative thereof) from
91 * the apps directory (application code) you must include an acknowledgement:
92 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
93 *
94 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
95 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
97 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
98 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
99 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
100 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
102 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
103 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
104 * SUCH DAMAGE.
105 *
106 * The licence and distribution terms for any publically available version or
107 * derivative of this code cannot be changed. i.e. this code cannot simply be
108 * copied and put under another distribution licence
109 * [including the GNU Public Licence.]
110 */
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECDH support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116
117 #include "cryptlib.h"
118 #include <openssl/safestack.h>
119
120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
122 #endif
123
124 DECLARE_STACK_OF(CRYPTO_dynlock)
125 IMPLEMENT_STACK_OF(CRYPTO_dynlock)
126
127 /* real #defines in crypto.h, keep these upto date */
128 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
129 {
130 "<<ERROR>>",
131 "err",
132 "ex_data",
133 "x509",
134 "x509_info",
135 "x509_pkey",
136 "x509_crl",
137 "x509_req",
138 "dsa",
139 "rsa",
140 "evp_pkey",
141 "x509_store",
142 "ssl_ctx",
143 "ssl_cert",
144 "ssl_session",
145 "ssl_sess_cert",
146 "ssl",
147 "ssl_method",
148 "rand",
149 "rand2",
150 "debug_malloc",
151 "BIO",
152 "gethostbyname",
153 "getservbyname",
154 "readdir",
155 "RSA_blinding",
156 "dh",
157 "debug_malloc2",
158 "dso",
159 "dynlock",
160 "engine",
161 "ui",
162 "ecdsa",
163 "ec",
164 "ecdh",
165 "bn",
166 "ec_pre_comp",
167 "store",
168 "comp",
169 #if CRYPTO_NUM_LOCKS != 39
170 # error "Inconsistency between crypto.h and cryptlib.c"
171 #endif
172 };
173
174 /* This is for applications to allocate new type names in the non-dynamic
175 array of lock names. These are numbered with positive numbers. */
176 static STACK *app_locks=NULL;
177
178 /* For applications that want a more dynamic way of handling threads, the
179 following stack is used. These are externally numbered with negative
180 numbers. */
181 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
182
183
184 static void (MS_FAR *locking_callback)(int mode,int type,
185 const char *file,int line)=NULL;
186 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
187 int type,const char *file,int line)=NULL;
188 static unsigned long (MS_FAR *id_callback)(void)=NULL;
189 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
190 (const char *file,int line)=NULL;
191 static void (MS_FAR *dynlock_lock_callback)(int mode,
192 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
193 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
194 const char *file,int line)=NULL;
195
CRYPTO_get_new_lockid(char * name)196 int CRYPTO_get_new_lockid(char *name)
197 {
198 char *str;
199 int i;
200
201 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
202 /* A hack to make Visual C++ 5.0 work correctly when linking as
203 * a DLL using /MT. Without this, the application cannot use
204 * and floating point printf's.
205 * It also seems to be needed for Visual C 1.5 (win16) */
206 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
207 #endif
208
209 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
210 {
211 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
212 return(0);
213 }
214 if ((str=BUF_strdup(name)) == NULL)
215 {
216 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
217 return(0);
218 }
219 i=sk_push(app_locks,str);
220 if (!i)
221 OPENSSL_free(str);
222 else
223 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
224 return(i);
225 }
226
CRYPTO_num_locks(void)227 int CRYPTO_num_locks(void)
228 {
229 return CRYPTO_NUM_LOCKS;
230 }
231
CRYPTO_get_new_dynlockid(void)232 int CRYPTO_get_new_dynlockid(void)
233 {
234 int i = 0;
235 CRYPTO_dynlock *pointer = NULL;
236
237 if (dynlock_create_callback == NULL)
238 {
239 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
240 return(0);
241 }
242 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
243 if ((dyn_locks == NULL)
244 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
245 {
246 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
247 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
248 return(0);
249 }
250 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
251
252 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
253 if (pointer == NULL)
254 {
255 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
256 return(0);
257 }
258 pointer->references = 1;
259 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
260 if (pointer->data == NULL)
261 {
262 OPENSSL_free(pointer);
263 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
264 return(0);
265 }
266
267 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
268 /* First, try to find an existing empty slot */
269 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
270 /* If there was none, push, thereby creating a new one */
271 if (i == -1)
272 /* Since sk_push() returns the number of items on the
273 stack, not the location of the pushed item, we need
274 to transform the returned number into a position,
275 by decreasing it. */
276 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
277 else
278 /* If we found a place with a NULL pointer, put our pointer
279 in it. */
280 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
281 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
282
283 if (i == -1)
284 {
285 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
286 OPENSSL_free(pointer);
287 }
288 else
289 i += 1; /* to avoid 0 */
290 return -i;
291 }
292
CRYPTO_destroy_dynlockid(int i)293 void CRYPTO_destroy_dynlockid(int i)
294 {
295 CRYPTO_dynlock *pointer = NULL;
296 if (i)
297 i = -i-1;
298 if (dynlock_destroy_callback == NULL)
299 return;
300
301 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
302
303 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
304 {
305 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
306 return;
307 }
308 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
309 if (pointer != NULL)
310 {
311 --pointer->references;
312 #ifdef REF_CHECK
313 if (pointer->references < 0)
314 {
315 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
316 abort();
317 }
318 else
319 #endif
320 if (pointer->references <= 0)
321 {
322 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
323 }
324 else
325 pointer = NULL;
326 }
327 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
328
329 if (pointer)
330 {
331 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
332 OPENSSL_free(pointer);
333 }
334 }
335
CRYPTO_get_dynlock_value(int i)336 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
337 {
338 CRYPTO_dynlock *pointer = NULL;
339 if (i)
340 i = -i-1;
341
342 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
343
344 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
345 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
346 if (pointer)
347 pointer->references++;
348
349 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
350
351 if (pointer)
352 return pointer->data;
353 return NULL;
354 }
355
CRYPTO_get_dynlock_create_callback(void)356 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
357 (const char *file,int line)
358 {
359 return(dynlock_create_callback);
360 }
361
CRYPTO_get_dynlock_lock_callback(void)362 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
363 struct CRYPTO_dynlock_value *l, const char *file,int line)
364 {
365 return(dynlock_lock_callback);
366 }
367
CRYPTO_get_dynlock_destroy_callback(void)368 void (*CRYPTO_get_dynlock_destroy_callback(void))
369 (struct CRYPTO_dynlock_value *l, const char *file,int line)
370 {
371 return(dynlock_destroy_callback);
372 }
373
CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value * (* func)(const char * file,int line))374 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
375 (const char *file, int line))
376 {
377 dynlock_create_callback=func;
378 }
379
CRYPTO_set_dynlock_lock_callback(void (* func)(int mode,struct CRYPTO_dynlock_value * l,const char * file,int line))380 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
381 struct CRYPTO_dynlock_value *l, const char *file, int line))
382 {
383 dynlock_lock_callback=func;
384 }
385
CRYPTO_set_dynlock_destroy_callback(void (* func)(struct CRYPTO_dynlock_value * l,const char * file,int line))386 void CRYPTO_set_dynlock_destroy_callback(void (*func)
387 (struct CRYPTO_dynlock_value *l, const char *file, int line))
388 {
389 dynlock_destroy_callback=func;
390 }
391
392
CRYPTO_get_locking_callback(void)393 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
394 int line)
395 {
396 return(locking_callback);
397 }
398
CRYPTO_get_add_lock_callback(void)399 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
400 const char *file,int line)
401 {
402 return(add_lock_callback);
403 }
404
CRYPTO_set_locking_callback(void (* func)(int mode,int type,const char * file,int line))405 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
406 const char *file,int line))
407 {
408 locking_callback=func;
409 }
410
CRYPTO_set_add_lock_callback(int (* func)(int * num,int mount,int type,const char * file,int line))411 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
412 const char *file,int line))
413 {
414 add_lock_callback=func;
415 }
416
CRYPTO_get_id_callback(void)417 unsigned long (*CRYPTO_get_id_callback(void))(void)
418 {
419 return(id_callback);
420 }
421
CRYPTO_set_id_callback(unsigned long (* func)(void))422 void CRYPTO_set_id_callback(unsigned long (*func)(void))
423 {
424 id_callback=func;
425 }
426
CRYPTO_thread_id(void)427 unsigned long CRYPTO_thread_id(void)
428 {
429 unsigned long ret=0;
430
431 if (id_callback == NULL)
432 {
433 #ifdef OPENSSL_SYS_WIN16
434 ret=(unsigned long)GetCurrentTask();
435 #elif defined(OPENSSL_SYS_WIN32)
436 ret=(unsigned long)GetCurrentThreadId();
437 #elif defined(GETPID_IS_MEANINGLESS)
438 ret=1L;
439 #else
440 ret=(unsigned long)getpid();
441 #endif
442 }
443 else
444 ret=id_callback();
445 return(ret);
446 }
447
CRYPTO_lock(int mode,int type,const char * file,int line)448 void CRYPTO_lock(int mode, int type, const char *file, int line)
449 {
450 #ifdef LOCK_DEBUG
451 {
452 char *rw_text,*operation_text;
453
454 if (mode & CRYPTO_LOCK)
455 operation_text="lock ";
456 else if (mode & CRYPTO_UNLOCK)
457 operation_text="unlock";
458 else
459 operation_text="ERROR ";
460
461 if (mode & CRYPTO_READ)
462 rw_text="r";
463 else if (mode & CRYPTO_WRITE)
464 rw_text="w";
465 else
466 rw_text="ERROR";
467
468 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
469 CRYPTO_thread_id(), rw_text, operation_text,
470 CRYPTO_get_lock_name(type), file, line);
471 }
472 #endif
473 if (type < 0)
474 {
475 if (dynlock_lock_callback != NULL)
476 {
477 struct CRYPTO_dynlock_value *pointer
478 = CRYPTO_get_dynlock_value(type);
479
480 OPENSSL_assert(pointer != NULL);
481
482 dynlock_lock_callback(mode, pointer, file, line);
483
484 CRYPTO_destroy_dynlockid(type);
485 }
486 }
487 else
488 if (locking_callback != NULL)
489 locking_callback(mode,type,file,line);
490 }
491
CRYPTO_add_lock(int * pointer,int amount,int type,const char * file,int line)492 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
493 int line)
494 {
495 int ret = 0;
496
497 if (add_lock_callback != NULL)
498 {
499 #ifdef LOCK_DEBUG
500 int before= *pointer;
501 #endif
502
503 ret=add_lock_callback(pointer,amount,type,file,line);
504 #ifdef LOCK_DEBUG
505 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
506 CRYPTO_thread_id(),
507 before,amount,ret,
508 CRYPTO_get_lock_name(type),
509 file,line);
510 #endif
511 }
512 else
513 {
514 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
515
516 ret= *pointer+amount;
517 #ifdef LOCK_DEBUG
518 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
519 CRYPTO_thread_id(),
520 *pointer,amount,ret,
521 CRYPTO_get_lock_name(type),
522 file,line);
523 #endif
524 *pointer=ret;
525 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
526 }
527 return(ret);
528 }
529
CRYPTO_get_lock_name(int type)530 const char *CRYPTO_get_lock_name(int type)
531 {
532 if (type < 0)
533 return("dynamic");
534 else if (type < CRYPTO_NUM_LOCKS)
535 return(lock_names[type]);
536 else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
537 return("ERROR");
538 else
539 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
540 }
541
542 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
543 defined(__INTEL__) || \
544 defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
545
546 unsigned long OPENSSL_ia32cap_P=0;
OPENSSL_ia32cap_loc(void)547 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
548
549 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
550 #define OPENSSL_CPUID_SETUP
OPENSSL_cpuid_setup(void)551 void OPENSSL_cpuid_setup(void)
552 { static int trigger=0;
553 unsigned long OPENSSL_ia32_cpuid(void);
554 char *env;
555
556 if (trigger) return;
557
558 trigger=1;
559 if ((env=getenv("OPENSSL_ia32cap")))
560 OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
561 else
562 OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
563 /*
564 * |(1<<10) sets a reserved bit to signal that variable
565 * was initialized already... This is to avoid interference
566 * with cpuid snippets in ELF .init segment.
567 */
568 }
569 #endif
570
571 #else
OPENSSL_ia32cap_loc(void)572 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
573 #endif
574 int OPENSSL_NONPIC_relocated = 0;
575 #if !defined(OPENSSL_CPUID_SETUP)
OPENSSL_cpuid_setup(void)576 void OPENSSL_cpuid_setup(void) {}
577 #endif
578
579 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
580 #ifdef __CYGWIN__
581 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
582 #include <windows.h>
583 #endif
584
585 /* All we really need to do is remove the 'error' state when a thread
586 * detaches */
587
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)588 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
589 LPVOID lpvReserved)
590 {
591 switch(fdwReason)
592 {
593 case DLL_PROCESS_ATTACH:
594 OPENSSL_cpuid_setup();
595 #if defined(_WIN32_WINNT)
596 {
597 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
598 IMAGE_NT_HEADERS *nt_headers;
599
600 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
601 {
602 nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
603 + dos_header->e_lfanew);
604 if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
605 hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
606 OPENSSL_NONPIC_relocated=1;
607 }
608 }
609 #endif
610 break;
611 case DLL_THREAD_ATTACH:
612 break;
613 case DLL_THREAD_DETACH:
614 ERR_remove_state(0);
615 break;
616 case DLL_PROCESS_DETACH:
617 break;
618 }
619 return(TRUE);
620 }
621 #endif
622
623 #if defined(_WIN32) && !defined(__CYGWIN__)
624 #include <tchar.h>
625
626 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
OPENSSL_isservice(void)627 int OPENSSL_isservice(void)
628 { HWINSTA h;
629 DWORD len;
630 WCHAR *name;
631
632 (void)GetDesktopWindow(); /* return value is ignored */
633
634 h = GetProcessWindowStation();
635 if (h==NULL) return -1;
636
637 if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
638 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
639 return -1;
640
641 if (len>512) return -1; /* paranoia */
642 len++,len&=~1; /* paranoia */
643 #ifdef _MSC_VER
644 name=(WCHAR *)_alloca(len+sizeof(WCHAR));
645 #else
646 name=(WCHAR *)alloca(len+sizeof(WCHAR));
647 #endif
648 if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
649 return -1;
650
651 len++,len&=~1; /* paranoia */
652 name[len/sizeof(WCHAR)]=L'\0'; /* paranoia */
653 #if 1
654 /* This doesn't cover "interactive" services [working with real
655 * WinSta0's] nor programs started non-interactively by Task
656 * Scheduler [those are working with SAWinSta]. */
657 if (wcsstr(name,L"Service-0x")) return 1;
658 #else
659 /* This covers all non-interactive programs such as services. */
660 if (!wcsstr(name,L"WinSta0")) return 1;
661 #endif
662 else return 0;
663 }
664 #else
OPENSSL_isservice(void)665 int OPENSSL_isservice(void) { return 0; }
666 #endif
667
OPENSSL_showfatal(const char * fmta,...)668 void OPENSSL_showfatal (const char *fmta,...)
669 { va_list ap;
670 TCHAR buf[256];
671 const TCHAR *fmt;
672 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
673 HANDLE h;
674
675 if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
676 GetFileType(h)!=FILE_TYPE_UNKNOWN)
677 { /* must be console application */
678 va_start (ap,fmta);
679 vfprintf (stderr,fmta,ap);
680 va_end (ap);
681 return;
682 }
683 #endif
684
685 if (sizeof(TCHAR)==sizeof(char))
686 fmt=(const TCHAR *)fmta;
687 else do
688 { int keepgoing;
689 size_t len_0=strlen(fmta)+1,i;
690 WCHAR *fmtw;
691
692 #ifdef _MSC_VER
693 fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
694 #else
695 fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
696 #endif
697 if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
698
699 #ifndef OPENSSL_NO_MULTIBYTE
700 if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
701 #endif
702 for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
703
704 for (i=0;i<len_0;i++)
705 { if (fmtw[i]==L'%') do
706 { keepgoing=0;
707 switch (fmtw[i+1])
708 { case L'0': case L'1': case L'2': case L'3': case L'4':
709 case L'5': case L'6': case L'7': case L'8': case L'9':
710 case L'.': case L'*':
711 case L'-': i++; keepgoing=1; break;
712 case L's': fmtw[i+1]=L'S'; break;
713 case L'S': fmtw[i+1]=L's'; break;
714 case L'c': fmtw[i+1]=L'C'; break;
715 case L'C': fmtw[i+1]=L'c'; break;
716 }
717 } while (keepgoing);
718 }
719 fmt = (const TCHAR *)fmtw;
720 } while (0);
721
722 va_start (ap,fmta);
723 _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
724 buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
725 va_end (ap);
726
727 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
728 /* this -------------v--- guards NT-specific calls */
729 if (GetVersion() < 0x80000000 && OPENSSL_isservice())
730 { HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
731 const TCHAR *pmsg=buf;
732 ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
733 DeregisterEventSource(h);
734 }
735 else
736 #endif
737 MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
738 }
739 #else
OPENSSL_showfatal(const char * fmta,...)740 void OPENSSL_showfatal (const char *fmta,...)
741 { va_list ap;
742
743 va_start (ap,fmta);
744 vfprintf (stderr,fmta,ap);
745 va_end (ap);
746 }
OPENSSL_isservice(void)747 int OPENSSL_isservice (void) { return 0; }
748 #endif
749
OpenSSLDie(const char * file,int line,const char * assertion)750 void OpenSSLDie(const char *file,int line,const char *assertion)
751 {
752 OPENSSL_showfatal(
753 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
754 file,line,assertion);
755 abort();
756 }
757
OPENSSL_stderr(void)758 void *OPENSSL_stderr(void) { return stderr; }
759