1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay@cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay@cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57#include <openssl/thread.h> 58 59#include <errno.h> 60 61#if defined(OPENSSL_WINDOWS) 62#include <Windows.h> 63#endif 64 65#include <openssl/mem.h> 66#include <openssl/type_check.h> 67 68/* lock_names contains the names of all the locks defined in thread.h. */ 69static const char *const lock_names[] = { 70 "<<ERROR>>", "err", "ex_data", "x509", 71 "x509_info", "x509_pkey", "x509_crl", "x509_req", 72 "dsa", "rsa", "evp_pkey", "x509_store", 73 "ssl_ctx", "ssl_cert", "ssl_session", "ssl_sess_cert", 74 "ssl", "ssl_method", "rand", "rand2", 75 "debug_malloc", "BIO", "gethostbyname", "getservbyname", 76 "readdir", "RSA_blinding", "dh", "debug_malloc2", 77 "dso", "dynlock", "engine", "ui", 78 "ecdsa", "ec", "ecdh", "bn", 79 "ec_pre_comp", "store", "comp", "fips", 80 "fips2", "obj", 81}; 82 83OPENSSL_COMPILE_ASSERT(CRYPTO_NUM_LOCKS == 84 sizeof(lock_names) / sizeof(lock_names[0]), 85 CRYPTO_NUM_LOCKS_inconsistent); 86 87static void (*locking_callback)(int mode, int lock_num, const char *file, 88 int line) = 0; 89static int (*add_lock_callback)(int *pointer, int amount, int lock_num, 90 const char *file, int line) = 0; 91static void (*threadid_callback)(CRYPTO_THREADID *) = 0; 92 93 94int CRYPTO_num_locks(void) { return CRYPTO_NUM_LOCKS; } 95 96void CRYPTO_set_locking_callback(void (*func)(int mode, int lock_num, 97 const char *file, int line)) { 98 locking_callback = func; 99} 100 101void CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int lock_num, 102 const char *file, int line)) { 103 add_lock_callback = func; 104} 105 106const char *CRYPTO_get_lock_name(int lock_num) { 107 if (lock_num >= 0 && lock_num < CRYPTO_NUM_LOCKS) { 108 return lock_names[lock_num]; 109 } else { 110 return "ERROR"; 111 } 112} 113 114int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *)) { 115 if (threadid_callback) { 116 return 0; 117 } 118 threadid_callback = func; 119 return 1; 120} 121 122void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val) { 123 memset(id, 0, sizeof(*id)); 124 id->val = val; 125} 126 127void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr) { 128 memset(id, 0, sizeof(*id)); 129 id->ptr = ptr; 130} 131 132void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num, 133 const char *file, int line) { 134 return locking_callback; 135} 136 137int (*CRYPTO_get_add_lock_callback(void))(int *num, int mount, int lock_num, 138 const char *file, int line) { 139 return add_lock_callback; 140} 141 142void CRYPTO_lock(int mode, int lock_num, const char *file, int line) { 143 if (locking_callback != NULL) { 144 locking_callback(mode, lock_num, file, line); 145 } 146} 147 148int CRYPTO_add_lock(int *pointer, int amount, int lock_num, const char *file, 149 int line) { 150 int ret = 0; 151 152 if (add_lock_callback != NULL) { 153 ret = add_lock_callback(pointer, amount, lock_num, file, line); 154 } else { 155 CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, lock_num, file, line); 156 ret = *pointer + amount; 157 *pointer = ret; 158 CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, lock_num, file, line); 159 } 160 161 return ret; 162} 163 164void CRYPTO_THREADID_current(CRYPTO_THREADID *id) { 165 if (threadid_callback) { 166 threadid_callback(id); 167 return; 168 } 169 170#if defined(OPENSSL_WINDOWS) 171 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId()); 172#else 173 /* For everything else, default to using the address of 'errno' */ 174 CRYPTO_THREADID_set_pointer(id, (void *)&errno); 175#endif 176} 177 178int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b) { 179 return memcmp(a, b, sizeof(*a)); 180} 181 182void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src) { 183 memcpy(dest, src, sizeof(*src)); 184} 185 186uint32_t CRYPTO_THREADID_hash(const CRYPTO_THREADID *id) { 187 return OPENSSL_hash32(id, sizeof(CRYPTO_THREADID)); 188} 189 190void CRYPTO_set_id_callback(unsigned long (*func)(void)) {} 191 192void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *( 193 *dyn_create_function)(const char *file, int line)) {} 194 195void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)( 196 int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)) {} 197 198void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)( 199 struct CRYPTO_dynlock_value *l, const char *file, int line)) {} 200