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Diffstat (limited to 'src/crypto/thread.c')
| -rw-r--r-- | src/crypto/thread.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/crypto/thread.c b/src/crypto/thread.c new file mode 100644 index 0000000..f18bc13 --- /dev/null +++ b/src/crypto/thread.c @@ -0,0 +1,203 @@ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] */ + +#include <openssl/thread.h> + +#include <errno.h> +#include <string.h> + +#if defined(OPENSSL_WINDOWS) +#pragma warning(push, 3) +#include <Windows.h> +#pragma warning(pop) +#endif + +#include <openssl/mem.h> +#include <openssl/type_check.h> + + +/* lock_names contains the names of all the locks defined in thread.h. */ +static const char *const lock_names[] = { + "<<ERROR>>", "err", "ex_data", "x509", + "x509_info", "x509_pkey", "x509_crl", "x509_req", + "dsa", "rsa", "evp_pkey", "x509_store", + "ssl_ctx", "ssl_cert", "ssl_session", "ssl_sess_cert", + "ssl", "ssl_method", "rand", "rand2", + "debug_malloc", "BIO", "gethostbyname", "getservbyname", + "readdir", "RSA_blinding", "dh", "debug_malloc2", + "dso", "dynlock", "engine", "ui", + "ecdsa", "ec", "ecdh", "bn", + "ec_pre_comp", "store", "comp", "fips", + "fips2", "obj", +}; + +OPENSSL_COMPILE_ASSERT(CRYPTO_NUM_LOCKS == + sizeof(lock_names) / sizeof(lock_names[0]), + CRYPTO_NUM_LOCKS_inconsistent); + +static void (*locking_callback)(int mode, int lock_num, const char *file, + int line) = 0; +static int (*add_lock_callback)(int *pointer, int amount, int lock_num, + const char *file, int line) = 0; +static void (*threadid_callback)(CRYPTO_THREADID *) = 0; + + +int CRYPTO_num_locks(void) { return CRYPTO_NUM_LOCKS; } + +void CRYPTO_set_locking_callback(void (*func)(int mode, int lock_num, + const char *file, int line)) { + locking_callback = func; +} + +void CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int lock_num, + const char *file, int line)) { + add_lock_callback = func; +} + +const char *CRYPTO_get_lock_name(int lock_num) { + if (lock_num >= 0 && lock_num < CRYPTO_NUM_LOCKS) { + return lock_names[lock_num]; + } else { + return "ERROR"; + } +} + +int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *)) { + if (threadid_callback) { + return 0; + } + threadid_callback = func; + return 1; +} + +void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val) { + memset(id, 0, sizeof(*id)); + id->val = val; +} + +void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr) { + memset(id, 0, sizeof(*id)); + id->ptr = ptr; +} + +void (*CRYPTO_get_locking_callback(void))(int mode, int lock_num, + const char *file, int line) { + return locking_callback; +} + +int (*CRYPTO_get_add_lock_callback(void))(int *num, int mount, int lock_num, + const char *file, int line) { + return add_lock_callback; +} + +void CRYPTO_lock(int mode, int lock_num, const char *file, int line) { + if (locking_callback != NULL) { + locking_callback(mode, lock_num, file, line); + } +} + +int CRYPTO_add_lock(int *pointer, int amount, int lock_num, const char *file, + int line) { + int ret = 0; + + if (add_lock_callback != NULL) { + ret = add_lock_callback(pointer, amount, lock_num, file, line); + } else { + CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, lock_num, file, line); + ret = *pointer + amount; + *pointer = ret; + CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, lock_num, file, line); + } + + return ret; +} + +void CRYPTO_THREADID_current(CRYPTO_THREADID *id) { + if (threadid_callback) { + threadid_callback(id); + return; + } + +#if defined(OPENSSL_WINDOWS) + CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId()); +#else + /* For everything else, default to using the address of 'errno' */ + CRYPTO_THREADID_set_pointer(id, (void *)&errno); +#endif +} + +int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b) { + return memcmp(a, b, sizeof(*a)); +} + +void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src) { + memcpy(dest, src, sizeof(*src)); +} + +uint32_t CRYPTO_THREADID_hash(const CRYPTO_THREADID *id) { + return OPENSSL_hash32(id, sizeof(CRYPTO_THREADID)); +} + +void CRYPTO_set_id_callback(unsigned long (*func)(void)) {} + +void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *( + *dyn_create_function)(const char *file, int line)) {} + +void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)( + int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)) {} + +void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)( + struct CRYPTO_dynlock_value *l, const char *file, int line)) {} |