Remove three more bogus files (2x temp file, 1x trash)
[openssl.git] / crypto / cryptlib.c
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 "crypto.h"
63 #include "date.h"
64
65 #if defined(WIN32) || defined(WIN16)
66 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
67 #endif
68
69 /* real #defines in crypto.h, keep these upto date */
70 static char* lock_names[CRYPTO_NUM_LOCKS] =
71         {
72         "<<ERROR>>",
73         "err",
74         "err_hash",
75         "x509",
76         "x509_info",
77         "x509_pkey",
78         "x509_crl",
79         "x509_req",
80         "dsa",
81         "rsa",
82         "evp_pkey",
83         "x509_store",
84         "ssl_ctx",
85         "ssl_cert",
86         "ssl_session",
87         "ssl",
88         "rand",
89         "debug_malloc",
90         "BIO",
91         "bio_gethostbyname",
92         "RSA_blinding",
93         };
94
95 static STACK *app_locks=NULL;
96
97 #ifndef NOPROTO
98 static void (MS_FAR *locking_callback)(int mode,int type,
99         char *file,int line)=NULL;
100 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
101         int type,char *file,int line)=NULL;
102 static unsigned long (MS_FAR *id_callback)(void)=NULL;
103 #else
104 static void (MS_FAR *locking_callback)()=NULL;
105 static int (MS_FAR *add_lock_callback)()=NULL;
106 static unsigned long (MS_FAR *id_callback)()=NULL;
107 #endif
108
109 int CRYPTO_get_new_lockid(name)
110 char *name;
111         {
112         char *str;
113         int i;
114
115         /* A hack to make Visual C++ 5.0 work correctly when linking as
116          * a DLL using /MT. Without this, the application cannot use
117          * and floating point printf's.
118          * It also seems to be needed for Visual C 1.5 (win16) */
119 #if defined(WIN32) || defined(WIN16)
120         SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
121 #endif
122
123         if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
124                 {
125                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
126                 return(0);
127                 }
128         if ((str=BUF_strdup(name)) == NULL)
129                 return(0);
130         i=sk_push(app_locks,str);
131         if (!i)
132                 Free(str);
133         else
134                 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
135         return(i);
136         }
137
138 void (*CRYPTO_get_locking_callback(P_V))(P_I_I_P_I)
139         {
140         return(locking_callback);
141         }
142
143 int (*CRYPTO_get_add_lock_callback(P_V))(P_IP_I_I_P_I)
144         {
145         return(add_lock_callback);
146         }
147
148 void CRYPTO_set_locking_callback(func)
149 void (*func)(P_I_I_P_I);
150         {
151         locking_callback=func;
152         }
153
154 void CRYPTO_set_add_lock_callback(func)
155 int (*func)(P_IP_I_I_P_I);
156         {
157         add_lock_callback=func;
158         }
159
160 unsigned long (*CRYPTO_get_id_callback(P_V))(P_V)
161         {
162         return(id_callback);
163         }
164
165 void CRYPTO_set_id_callback(func)
166 unsigned long (*func)(P_V);
167         {
168         id_callback=func;
169         }
170
171 unsigned long CRYPTO_thread_id()
172         {
173         unsigned long ret=0;
174
175         if (id_callback == NULL)
176                 {
177 #ifdef WIN16
178                 ret=(unsigned long)GetCurrentTask();
179 #elif defined(WIN32)
180                 ret=(unsigned long)GetCurrentThreadId();
181 #elif defined(MSDOS)
182                 ret=1L;
183 #else
184                 ret=(unsigned long)getpid();
185 #endif
186                 }
187         else
188                 ret=id_callback();
189         return(ret);
190         }
191
192 void CRYPTO_lock(mode,type,file,line)
193 int mode;
194 int type;
195 char *file;
196 int line;
197         {
198 #ifdef LOCK_DEBUG
199                 {
200                 char *rw_text,*operation_text;
201
202                 if (mode & CRYPTO_LOCK)
203                         operation_text="lock  ";
204                 else if (mode & CRYPTO_UNLOCK)
205                         operation_text="unlock";
206                 else
207                         operation_text="ERROR ";
208
209                 if (mode & CRYPTO_READ)
210                         rw_text="r";
211                 else if (mode & CRYPTO_WRITE)
212                         rw_text="w";
213                 else
214                         rw_text="ERROR";
215
216                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
217                         CRYPTO_thread_id(), rw_text, operation_text,
218                         CRYPTO_get_lock_name(type), file, line);
219                 }
220 #endif
221         if (locking_callback != NULL)
222                 locking_callback(mode,type,file,line);
223         }
224
225 int CRYPTO_add_lock(pointer,amount,type,file,line)
226 int *pointer;
227 int amount;
228 int type;
229 char *file;
230 int line;
231         {
232         int ret;
233
234         if (add_lock_callback != NULL)
235                 {
236 #ifdef LOCK_DEBUG
237                 int before= *pointer;
238 #endif
239
240                 ret=add_lock_callback(pointer,amount,type,file,line);
241 #ifdef LOCK_DEBUG
242                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
243                         CRYPTO_thread_id(),
244                         before,amount,ret,
245                         CRYPTO_get_lock_name(type),
246                         file,line);
247 #endif
248                 *pointer=ret;
249                 }
250         else
251                 {
252                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
253
254                 ret= *pointer+amount;
255 #ifdef LOCK_DEBUG
256                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
257                         CRYPTO_thread_id(),
258                         *pointer,amount,ret,
259                         CRYPTO_get_lock_name(type),
260                         file,line);
261 #endif
262                 *pointer=ret;
263                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
264                 }
265         return(ret);
266         }
267
268 char *CRYPTO_get_lock_name(type)
269 int type;
270         {
271         if (type < 0)
272                 return("ERROR");
273         else if (type < CRYPTO_NUM_LOCKS)
274                 return(lock_names[type]);
275         else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
276                 return("ERROR");
277         else
278                 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
279         }
280
281 #ifdef _DLL
282 #ifdef WIN32
283
284 /* All we really need to do is remove the 'error' state when a thread
285  * detaches */
286
287 BOOL WINAPI DLLEntryPoint(hinstDLL,fdwReason,lpvReserved)
288 HINSTANCE hinstDLL;
289 DWORD fdwReason;
290 LPVOID lpvReserved;
291         {
292         switch(fdwReason)
293                 {
294         case DLL_PROCESS_ATTACH:
295                 break;
296         case DLL_THREAD_ATTACH:
297                 break;
298         case DLL_THREAD_DETACH:
299                 ERR_remove_state(0);
300                 break;
301         case DLL_PROCESS_DETACH:
302                 break;
303                 }
304         return(TRUE);
305         }
306 #endif
307
308 #endif