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1/* crypto/cryptlib.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include <string.h>
61#include "cryptlib.h"
62#include <openssl/crypto.h>
63
64#if defined(WIN32) || defined(WIN16)
65static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
66#endif
67
68/* real #defines in crypto.h, keep these upto date */
69static const char* lock_names[CRYPTO_NUM_LOCKS] =
70 {
71 "<<ERROR>>",
72 "err",
73 "err_hash",
74 "x509",
75 "x509_info",
76 "x509_pkey",
77 "x509_crl",
78 "x509_req",
79 "dsa",
80 "rsa",
81 "evp_pkey",
82 "x509_store",
83 "ssl_ctx",
84 "ssl_cert",
85 "ssl_session",
86 "ssl_sess_cert",
87 "ssl",
88 "rand",
89 "debug_malloc",
90 "BIO",
91 "gethostbyname",
92 "getservbyname",
93 "readdir",
94 "RSA_blinding",
95 "dh",
96 "debug_malloc2",
97#if CRYPTO_NUM_LOCKS != 26
98# error "Inconsistency between crypto.h and cryptlib.c"
99#endif
100 };
101
102static STACK *app_locks=NULL;
103
104static void (MS_FAR *locking_callback)(int mode,int type,
105 const char *file,int line)=NULL;
106static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
107 int type,const char *file,int line)=NULL;
108static unsigned long (MS_FAR *id_callback)(void)=NULL;
109int CRYPTO_get_new_lockid(char *name)
110 {
111 char *str;
112 int i;
113
114 /* A hack to make Visual C++ 5.0 work correctly when linking as
115 * a DLL using /MT. Without this, the application cannot use
116 * and floating point printf's.
117 * It also seems to be needed for Visual C 1.5 (win16) */
118#if defined(WIN32) || defined(WIN16)
119 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
120#endif
121
122 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
123 {
124 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
125 return(0);
126 }
127 if ((str=BUF_strdup(name)) == NULL)
128 return(0);
129 i=sk_push(app_locks,str);
130 if (!i)
131 Free(str);
132 else
133 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
134 return(i);
135 }
136
137int CRYPTO_num_locks(void)
138 {
139 return CRYPTO_NUM_LOCKS;
140 }
141
142void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
143 int line)
144 {
145 return(locking_callback);
146 }
147
148int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
149 const char *file,int line)
150 {
151 return(add_lock_callback);
152 }
153
154void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
155 const char *file,int line))
156 {
157 locking_callback=func;
158 }
159
160void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
161 const char *file,int line))
162 {
163 add_lock_callback=func;
164 }
165
166unsigned long (*CRYPTO_get_id_callback(void))(void)
167 {
168 return(id_callback);
169 }
170
171void CRYPTO_set_id_callback(unsigned long (*func)(void))
172 {
173 id_callback=func;
174 }
175
176unsigned long CRYPTO_thread_id(void)
177 {
178 unsigned long ret=0;
179
180 if (id_callback == NULL)
181 {
182#ifdef WIN16
183 ret=(unsigned long)GetCurrentTask();
184#elif defined(WIN32)
185 ret=(unsigned long)GetCurrentThreadId();
186#elif defined(GETPID_IS_MEANINGLESS)
187 ret=1L;
188#else
189 ret=(unsigned long)getpid();
190#endif
191 }
192 else
193 ret=id_callback();
194 return(ret);
195 }
196
197void CRYPTO_lock(int mode, int type, const char *file, int line)
198 {
199#ifdef LOCK_DEBUG
200 {
201 char *rw_text,*operation_text;
202
203 if (mode & CRYPTO_LOCK)
204 operation_text="lock ";
205 else if (mode & CRYPTO_UNLOCK)
206 operation_text="unlock";
207 else
208 operation_text="ERROR ";
209
210 if (mode & CRYPTO_READ)
211 rw_text="r";
212 else if (mode & CRYPTO_WRITE)
213 rw_text="w";
214 else
215 rw_text="ERROR";
216
217 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
218 CRYPTO_thread_id(), rw_text, operation_text,
219 CRYPTO_get_lock_name(type), file, line);
220 }
221#endif
222 if (locking_callback != NULL)
223 locking_callback(mode,type,file,line);
224 }
225
226int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
227 int line)
228 {
229 int ret;
230
231 if (add_lock_callback != NULL)
232 {
233#ifdef LOCK_DEBUG
234 int before= *pointer;
235#endif
236
237 ret=add_lock_callback(pointer,amount,type,file,line);
238#ifdef LOCK_DEBUG
239 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
240 CRYPTO_thread_id(),
241 before,amount,ret,
242 CRYPTO_get_lock_name(type),
243 file,line);
244#endif
245 *pointer=ret;
246 }
247 else
248 {
249 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
250
251 ret= *pointer+amount;
252#ifdef LOCK_DEBUG
253 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
254 CRYPTO_thread_id(),
255 *pointer,amount,ret,
256 CRYPTO_get_lock_name(type),
257 file,line);
258#endif
259 *pointer=ret;
260 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
261 }
262 return(ret);
263 }
264
265const char *CRYPTO_get_lock_name(int type)
266 {
267 if (type < 0)
268 return("ERROR");
269 else if (type < CRYPTO_NUM_LOCKS)
270 return(lock_names[type]);
271 else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
272 return("ERROR");
273 else
274 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
275 }
276
277#ifdef _DLL
278#ifdef WIN32
279
280/* All we really need to do is remove the 'error' state when a thread
281 * detaches */
282
283BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
284 LPVOID lpvReserved)
285 {
286 switch(fdwReason)
287 {
288 case DLL_PROCESS_ATTACH:
289 break;
290 case DLL_THREAD_ATTACH:
291 break;
292 case DLL_THREAD_DETACH:
293 ERR_remove_state(0);
294 break;
295 case DLL_PROCESS_DETACH:
296 break;
297 }
298 return(TRUE);
299 }
300#endif
301
302#endif
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