Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/cryptlib.c	Lines:	34	154	22.1 %
Date:	2017-11-13	Branches:	9	76	11.8 %


/* $OpenBSD: cryptlib.c,v 1.41 2017/04/29 21:48:43 jsing Exp $ */
/* ====================================================================
 * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* 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.]
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECDH support in OpenSSL originally developed by
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */

#include <limits.h>
#include <stdarg.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>

#include <openssl/opensslconf.h>

#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/err.h>
#include <openssl/safestack.h>
#include <openssl/sha.h>

DECLARE_STACK_OF(CRYPTO_dynlock)

/* real #defines in crypto.h, keep these upto date */
static const char* const lock_names[CRYPTO_NUM_LOCKS] = {
	"<<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",
#if CRYPTO_NUM_LOCKS != 41
# error "Inconsistency between crypto.h and cryptlib.c"
#endif
};

/* This is for applications to allocate new type names in the non-dynamic
   array of lock names.  These are numbered with positive numbers.  */
static STACK_OF(OPENSSL_STRING) *app_locks = NULL;

/* For applications that want a more dynamic way of handling threads, the
   following stack is used.  These are externally numbered with negative
   numbers.  */
static STACK_OF(CRYPTO_dynlock) *dyn_locks = NULL;

static void (*locking_callback)(int mode, int type,
    const char *file, int line) = 0;
static int (*add_lock_callback)(int *pointer, int amount,
    int type, const char *file, int line) = 0;
#ifndef OPENSSL_NO_DEPRECATED
static unsigned long (*id_callback)(void) = 0;
#endif
static void (*threadid_callback)(CRYPTO_THREADID *) = 0;
static struct CRYPTO_dynlock_value *(*dynlock_create_callback)(
    const char *file, int line) = 0;
static void (*dynlock_lock_callback)(int mode,
    struct CRYPTO_dynlock_value *l, const char *file, int line) = 0;
static void (*dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
    const char *file, int line) = 0;

int
CRYPTO_get_new_lockid(char *name)
{
	char *str;
	int i;

	if ((app_locks == NULL) &&
	    ((app_locks = sk_OPENSSL_STRING_new_null()) == NULL)) {
		CRYPTOerror(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	if (name == NULL || (str = strdup(name)) == NULL) {
		CRYPTOerror(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	i = sk_OPENSSL_STRING_push(app_locks, str);
	if (!i)
		free(str);
	else
		i += CRYPTO_NUM_LOCKS; /* gap of one :-) */
	return (i);
}

int
CRYPTO_num_locks(void)
{
	return CRYPTO_NUM_LOCKS;
}

int
CRYPTO_get_new_dynlockid(void)
{
	int i = 0;
	CRYPTO_dynlock *pointer = NULL;

	if (dynlock_create_callback == NULL) {
		CRYPTOerror(CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
		return (0);
	}
	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
	if ((dyn_locks == NULL) &&
	    ((dyn_locks = sk_CRYPTO_dynlock_new_null()) == NULL)) {
		CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
		CRYPTOerror(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);

	pointer = malloc(sizeof(CRYPTO_dynlock));
	if (pointer == NULL) {
		CRYPTOerror(ERR_R_MALLOC_FAILURE);
		return (0);
	}
	pointer->references = 1;
	pointer->data = dynlock_create_callback(__FILE__, __LINE__);
	if (pointer->data == NULL) {
		free(pointer);
		CRYPTOerror(ERR_R_MALLOC_FAILURE);
		return (0);
	}

	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
	/* First, try to find an existing empty slot */
	i = sk_CRYPTO_dynlock_find(dyn_locks, NULL);
	/* If there was none, push, thereby creating a new one */
	if (i == -1)
		/* Since sk_push() returns the number of items on the
		   stack, not the location of the pushed item, we need
		   to transform the returned number into a position,
		   by decreasing it.  */
		i = sk_CRYPTO_dynlock_push(dyn_locks, pointer) - 1;
	else
		/* If we found a place with a NULL pointer, put our pointer
		   in it.  */
		(void)sk_CRYPTO_dynlock_set(dyn_locks, i, pointer);
	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);

	if (i == -1) {
		dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
		free(pointer);
	} else
		i += 1; /* to avoid 0 */
	return -i;
}

void
CRYPTO_destroy_dynlockid(int i)
{
	CRYPTO_dynlock *pointer = NULL;

	if (i)
		i = -i - 1;
	if (dynlock_destroy_callback == NULL)
		return;

	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);

	if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks)) {
		CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
		return;
	}
	pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
	if (pointer != NULL) {
		--pointer->references;
		if (pointer->references <= 0) {
			(void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
		} else
			pointer = NULL;
	}
	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);

	if (pointer) {
		dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
		free(pointer);
	}
}

struct CRYPTO_dynlock_value *
CRYPTO_get_dynlock_value(int i)
{
	CRYPTO_dynlock *pointer = NULL;

	if (i)
		i = -i - 1;

	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);

	if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
		pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
	if (pointer)
		pointer->references++;

	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);

	if (pointer)
		return pointer->data;
	return NULL;
}

struct CRYPTO_dynlock_value *
(*CRYPTO_get_dynlock_create_callback(void))(const char *file, int line)
{
	return (dynlock_create_callback);
}

void
(*CRYPTO_get_dynlock_lock_callback(void))(int mode,
    struct CRYPTO_dynlock_value *l, const char *file, int line)
{
	return (dynlock_lock_callback);
}

void
(*CRYPTO_get_dynlock_destroy_callback(void))(struct CRYPTO_dynlock_value *l,
    const char *file, int line)
{
	return (dynlock_destroy_callback);
}

void
CRYPTO_set_dynlock_create_callback(
    struct CRYPTO_dynlock_value *(*func)(const char *file, int line))
{
	dynlock_create_callback = func;
}

void
CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
    struct CRYPTO_dynlock_value *l, const char *file, int line))
{
	dynlock_lock_callback = func;
}

void
CRYPTO_set_dynlock_destroy_callback(
    void (*func)(struct CRYPTO_dynlock_value *l, const char *file, int line))
{
	dynlock_destroy_callback = func;
}

void
(*CRYPTO_get_locking_callback(void))(int mode, int type, const char *file,
    int line)
{
	return (locking_callback);
}

int
(*CRYPTO_get_add_lock_callback(void))(int *num, int mount, int type,
    const char *file, int line)
{
	return (add_lock_callback);
}

void
CRYPTO_set_locking_callback(void (*func)(int mode, int type,
    const char *file, int line))
{
	/* Calling this here ensures initialisation before any threads
	 * are started.
	 */
	locking_callback = func;
}

void
CRYPTO_set_add_lock_callback(int (*func)(int *num, int mount, int type,
    const char *file, int line))
{
	add_lock_callback = func;
}

/* the memset() here and in set_pointer() seem overkill, but for the sake of
 * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
 * "equal" THREADID structs to not be memcmp()-identical. */
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;
#if ULONG_MAX >= UINTPTR_MAX
	/*s u 'ptr' can be embedded in 'val' without loss of uniqueness */
	id->val = (uintptr_t)id->ptr;
#else
	{
		SHA256_CTX ctx;
		uint8_t results[SHA256_DIGEST_LENGTH];

		SHA256_Init(&ctx);
		SHA256_Update(&ctx, (char *)(&id->ptr), sizeof(id->ptr));
		SHA256_Final(results, &ctx);
		memcpy(&id->val, results, sizeof(id->val));
	}
#endif
}

int
CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *))
{
	if (threadid_callback)
		return 0;
	threadid_callback = func;
	return 1;
}

void (*CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID *)
{
	return threadid_callback;
}

void
CRYPTO_THREADID_current(CRYPTO_THREADID *id)
{
	if (threadid_callback) {
		threadid_callback(id);
		return;
	}
#ifndef OPENSSL_NO_DEPRECATED
	/* If the deprecated callback was set, fall back to that */
	if (id_callback) {
		CRYPTO_THREADID_set_numeric(id, id_callback());
		return;
	}
#endif
	/* Else pick a backup */
	/* For everything else, default to using the address of 'errno' */
	CRYPTO_THREADID_set_pointer(id, (void*)&errno);
}

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));
}

unsigned long
CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
{
	return id->val;
}

#ifndef OPENSSL_NO_DEPRECATED
unsigned long (*CRYPTO_get_id_callback(void))(void)
{
	return (id_callback);
}

void
CRYPTO_set_id_callback(unsigned long (*func)(void))
{
	id_callback = func;
}

unsigned long
CRYPTO_thread_id(void)
{
	unsigned long ret = 0;

	if (id_callback == NULL) {
		ret = (unsigned long)getpid();
	} else
		ret = id_callback();
	return (ret);
}
#endif

void
CRYPTO_lock(int mode, int type, const char *file, int line)
{
#ifdef LOCK_DEBUG
	{
		CRYPTO_THREADID id;
		char *rw_text, *operation_text;

		if (mode & CRYPTO_LOCK)
			operation_text = "lock  ";
		else if (mode & CRYPTO_UNLOCK)
			operation_text = "unlock";
		else
			operation_text = "ERROR ";

		if (mode & CRYPTO_READ)
			rw_text = "r";
		else if (mode & CRYPTO_WRITE)
			rw_text = "w";
		else
			rw_text = "ERROR";

		CRYPTO_THREADID_current(&id);
		fprintf(stderr, "lock:%08lx:(%s)%s %-18s %s:%d\n",
		    CRYPTO_THREADID_hash(&id), rw_text, operation_text,
		    CRYPTO_get_lock_name(type), file, line);
	}
#endif
	if (type < 0) {
		if (dynlock_lock_callback != NULL) {
			struct CRYPTO_dynlock_value *pointer =
			    CRYPTO_get_dynlock_value(type);

			OPENSSL_assert(pointer != NULL);

			dynlock_lock_callback(mode, pointer, file, line);

			CRYPTO_destroy_dynlockid(type);
		}
	} else if (locking_callback != NULL)
		locking_callback(mode, type, file, line);
}

int
CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
    int line)
{
	int ret = 0;

	if (add_lock_callback != NULL) {
#ifdef LOCK_DEBUG
		int before= *pointer;
#endif

		ret = add_lock_callback(pointer, amount, type, file, line);
#ifdef LOCK_DEBUG
		{
			CRYPTO_THREADID id;
			CRYPTO_THREADID_current(&id);
			fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
			    CRYPTO_THREADID_hash(&id), before, amount, ret,
			    CRYPTO_get_lock_name(type),
			    file, line);
		}
#endif
	} else {
		CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE, type, file, line);

		ret= *pointer + amount;
#ifdef LOCK_DEBUG
		{
			CRYPTO_THREADID id;
			CRYPTO_THREADID_current(&id);
			fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
			    CRYPTO_THREADID_hash(&id), *pointer, amount, ret,
			    CRYPTO_get_lock_name(type), file, line);
		}
#endif
		*pointer = ret;
		CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE, type, file, line);
	}
	return (ret);
}

const char *
CRYPTO_get_lock_name(int type)
{
	if (type < 0)
		return("dynamic");
	else if (type < CRYPTO_NUM_LOCKS)
		return (lock_names[type]);
	else if (type - CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
		return("ERROR");
	else
		return (sk_OPENSSL_STRING_value(app_locks,
		    type - CRYPTO_NUM_LOCKS));
}

#if	defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
	defined(__INTEL__) || \
	defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)

uint64_t OPENSSL_ia32cap_P;

uint64_t
OPENSSL_cpu_caps(void)
{
	return OPENSSL_ia32cap_P;
}

#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM)
#define OPENSSL_CPUID_SETUP
void
OPENSSL_cpuid_setup(void)
{
	static int trigger = 0;
	uint64_t OPENSSL_ia32_cpuid(void);

	if (trigger)
		return;
	trigger = 1;
	OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid();
}
#endif

#else
uint64_t
OPENSSL_cpu_caps(void)
{
	return 0;
}
#endif

#if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
void
OPENSSL_cpuid_setup(void)
{
}
#endif

static void
OPENSSL_showfatal(const char *fmta, ...)
{
	va_list ap;

	va_start(ap, fmta);
	vfprintf(stderr, fmta, ap);
	va_end(ap);
}

void
OpenSSLDie(const char *file, int line, const char *assertion)
{
	OPENSSL_showfatal(
	    "%s(%d): OpenSSL internal error, assertion failed: %s\n",
	    file, line, assertion);
	abort();
}

int
CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
{
	size_t i;
	const unsigned char *a = in_a;
	const unsigned char *b = in_b;
	unsigned char x = 0;

	for (i = 0; i < len; i++)
		x |= a[i] ^ b[i];

	return x;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: cryptlib.c,v 1.41 2017/04/29 21:48:43 jsing Exp $ */
2			/* ====================================================================
3			* Copyright (c) 1998-2006 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 <limits.h>
118			#include <stdarg.h>
119			#include <stdint.h>
120			#include <string.h>
121			#include <unistd.h>
122
123			#include <openssl/opensslconf.h>
124
125			#include <openssl/crypto.h>
126			#include <openssl/buffer.h>
127			#include <openssl/err.h>
128			#include <openssl/safestack.h>
129			#include <openssl/sha.h>
130
131			DECLARE_STACK_OF(CRYPTO_dynlock)
132
133			/* real #defines in crypto.h, keep these upto date */
134			static const char* const lock_names[CRYPTO_NUM_LOCKS] = {
135			"<<ERROR>>",
136			"err",
137			"ex_data",
138			"x509",
139			"x509_info",
140			"x509_pkey",
141			"x509_crl",
142			"x509_req",
143			"dsa",
144			"rsa",
145			"evp_pkey",
146			"x509_store",
147			"ssl_ctx",
148			"ssl_cert",
149			"ssl_session",
150			"ssl_sess_cert",
151			"ssl",
152			"ssl_method",
153			"rand",
154			"rand2",
155			"debug_malloc",
156			"BIO",
157			"gethostbyname",
158			"getservbyname",
159			"readdir",
160			"RSA_blinding",
161			"dh",
162			"debug_malloc2",
163			"dso",
164			"dynlock",
165			"engine",
166			"ui",
167			"ecdsa",
168			"ec",
169			"ecdh",
170			"bn",
171			"ec_pre_comp",
172			"store",
173			"comp",
174			"fips",
175			"fips2",
176			#if CRYPTO_NUM_LOCKS != 41
177			# error "Inconsistency between crypto.h and cryptlib.c"
178			#endif
179			};
180
181			/* This is for applications to allocate new type names in the non-dynamic
182			array of lock names. These are numbered with positive numbers. */
183			static STACK_OF(OPENSSL_STRING) *app_locks = NULL;
184
185			/* For applications that want a more dynamic way of handling threads, the
186			following stack is used. These are externally numbered with negative
187			numbers. */
188			static STACK_OF(CRYPTO_dynlock) *dyn_locks = NULL;
189
190			static void (*locking_callback)(int mode, int type,
191			const char *file, int line) = 0;
192			static int (add_lock_callback)(int pointer, int amount,
193			int type, const char *file, int line) = 0;
194			#ifndef OPENSSL_NO_DEPRECATED
195			static unsigned long (*id_callback)(void) = 0;
196			#endif
197			static void (threadid_callback)(CRYPTO_THREADID ) = 0;
198			static struct CRYPTO_dynlock_value (dynlock_create_callback)(
199			const char *file, int line) = 0;
200			static void (*dynlock_lock_callback)(int mode,
201			struct CRYPTO_dynlock_value l, const char file, int line) = 0;
202			static void (dynlock_destroy_callback)(struct CRYPTO_dynlock_value l,
203			const char *file, int line) = 0;
204
205			int
206			CRYPTO_get_new_lockid(char *name)
207			{
208			char *str;
209			int i;
210
211			if ((app_locks == NULL) &&
212			((app_locks = sk_OPENSSL_STRING_new_null()) == NULL)) {
213			CRYPTOerror(ERR_R_MALLOC_FAILURE);
214			return (0);
215			}
216			if (name == NULL \|\| (str = strdup(name)) == NULL) {
217			CRYPTOerror(ERR_R_MALLOC_FAILURE);
218			return (0);
219			}
220			i = sk_OPENSSL_STRING_push(app_locks, str);
221			if (!i)
222			free(str);
223			else
224			i += CRYPTO_NUM_LOCKS; /* gap of one :-) */
225			return (i);
226			}
227
228			int
229			CRYPTO_num_locks(void)
230			{
231		40	return CRYPTO_NUM_LOCKS;
232			}
233
234			int
235			CRYPTO_get_new_dynlockid(void)
236			{
237			int i = 0;
238			CRYPTO_dynlock *pointer = NULL;
239
240			if (dynlock_create_callback == NULL) {
241			CRYPTOerror(CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
242			return (0);
243			}
244			CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
245			if ((dyn_locks == NULL) &&
246			((dyn_locks = sk_CRYPTO_dynlock_new_null()) == NULL)) {
247			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
248			CRYPTOerror(ERR_R_MALLOC_FAILURE);
249			return (0);
250			}
251			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
252
253			pointer = malloc(sizeof(CRYPTO_dynlock));
254			if (pointer == NULL) {
255			CRYPTOerror(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			free(pointer);
262			CRYPTOerror(ERR_R_MALLOC_FAILURE);
263			return (0);
264			}
265
266			CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
267			/* First, try to find an existing empty slot */
268			i = sk_CRYPTO_dynlock_find(dyn_locks, NULL);
269			/* If there was none, push, thereby creating a new one */
270			if (i == -1)
271			/* Since sk_push() returns the number of items on the
272			stack, not the location of the pushed item, we need
273			to transform the returned number into a position,
274			by decreasing it. */
275			i = sk_CRYPTO_dynlock_push(dyn_locks, pointer) - 1;
276			else
277			/* If we found a place with a NULL pointer, put our pointer
278			in it. */
279			(void)sk_CRYPTO_dynlock_set(dyn_locks, i, pointer);
280			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
281
282			if (i == -1) {
283			dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
284			free(pointer);
285			} else
286			i += 1; /* to avoid 0 */
287			return -i;
288			}
289
290			void
291			CRYPTO_destroy_dynlockid(int i)
292			{
293			CRYPTO_dynlock *pointer = NULL;
294
295			if (i)
296			i = -i - 1;
297			if (dynlock_destroy_callback == NULL)
298			return;
299
300			CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
301
302			if (dyn_locks == NULL \|\| i >= sk_CRYPTO_dynlock_num(dyn_locks)) {
303			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
304			return;
305			}
306			pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
307			if (pointer != NULL) {
308			--pointer->references;
309			if (pointer->references <= 0) {
310			(void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
311			} else
312			pointer = NULL;
313			}
314			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
315
316			if (pointer) {
317			dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
318			free(pointer);
319			}
320			}
321
322			struct CRYPTO_dynlock_value *
323			CRYPTO_get_dynlock_value(int i)
324			{
325			CRYPTO_dynlock *pointer = NULL;
326
327			if (i)
328			i = -i - 1;
329
330			CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
331
332			if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
333			pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
334			if (pointer)
335			pointer->references++;
336
337			CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
338
339			if (pointer)
340			return pointer->data;
341			return NULL;
342			}
343
344			struct CRYPTO_dynlock_value *
345			(CRYPTO_get_dynlock_create_callback(void))(const char file, int line)
346			{
347			return (dynlock_create_callback);
348			}
349
350			void
351			(*CRYPTO_get_dynlock_lock_callback(void))(int mode,
352			struct CRYPTO_dynlock_value l, const char file, int line)
353			{
354			return (dynlock_lock_callback);
355			}
356
357			void
358			(CRYPTO_get_dynlock_destroy_callback(void))(struct CRYPTO_dynlock_value l,
359			const char *file, int line)
360			{
361			return (dynlock_destroy_callback);
362			}
363
364			void
365			CRYPTO_set_dynlock_create_callback(
366			struct CRYPTO_dynlock_value (func)(const char *file, int line))
367			{
368			dynlock_create_callback = func;
369			}
370
371			void
372			CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
373			struct CRYPTO_dynlock_value l, const char file, int line))
374			{
375			dynlock_lock_callback = func;
376			}
377
378			void
379			CRYPTO_set_dynlock_destroy_callback(
380			void (func)(struct CRYPTO_dynlock_value l, const char *file, int line))
381			{
382			dynlock_destroy_callback = func;
383			}
384
385			void
386			(CRYPTO_get_locking_callback(void))(int mode, int type, const char file,
387			int line)
388			{
389			return (locking_callback);
390			}
391
392			int
393			(CRYPTO_get_add_lock_callback(void))(int num, int mount, int type,
394			const char *file, int line)
395			{
396			return (add_lock_callback);
397			}
398
399			void
400			CRYPTO_set_locking_callback(void (*func)(int mode, int type,
401			const char *file, int line))
402			{
403			/* Calling this here ensures initialisation before any threads
404			* are started.
405			*/
406		3132	locking_callback = func;
407		1566	}
408
409			void
410			CRYPTO_set_add_lock_callback(int (func)(int num, int mount, int type,
411			const char *file, int line))
412			{
413			add_lock_callback = func;
414			}
415
416			/* the memset() here and in set_pointer() seem overkill, but for the sake of
417			* CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
418			* "equal" THREADID structs to not be memcmp()-identical. */
419			void
420			CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
421			{
422			memset(id, 0, sizeof(*id));
423			id->val = val;
424			}
425
426			void
427			CRYPTO_THREADID_set_pointer(CRYPTO_THREADID id, void ptr)
428			{
429		153842	memset(id, 0, sizeof(*id));
430		76921	id->ptr = ptr;
431			#if ULONG_MAX >= UINTPTR_MAX
432			/s u 'ptr' can be embedded in 'val' without loss of uniqueness /
433		76921	id->val = (uintptr_t)id->ptr;
434			#else
435			{
436			SHA256_CTX ctx;
437			uint8_t results[SHA256_DIGEST_LENGTH];
438
439			SHA256_Init(&ctx);
440			SHA256_Update(&ctx, (char *)(&id->ptr), sizeof(id->ptr));
441			SHA256_Final(results, &ctx);
442			memcpy(&id->val, results, sizeof(id->val));
443			}
444			#endif
445		76921	}
446
447			int
448			CRYPTO_THREADID_set_callback(void (func)(CRYPTO_THREADID ))
449			{
450	✗✓	40	if (threadid_callback)
451			return 0;
452		20	threadid_callback = func;
453		20	return 1;
454		20	}
455
456			void (CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID )
457			{
458			return threadid_callback;
459			}
460
461			void
462			CRYPTO_THREADID_current(CRYPTO_THREADID *id)
463			{
464	✗✓	153842	if (threadid_callback) {
465			threadid_callback(id);
466			return;
467			}
468			#ifndef OPENSSL_NO_DEPRECATED
469			/* If the deprecated callback was set, fall back to that */
470	✗✓	76921	if (id_callback) {
471			CRYPTO_THREADID_set_numeric(id, id_callback());
472			return;
473			}
474			#endif
475			/* Else pick a backup */
476			/* For everything else, default to using the address of 'errno' */
477		76921	CRYPTO_THREADID_set_pointer(id, (void*)&errno);
478		153842	}
479
480			int
481			CRYPTO_THREADID_cmp(const CRYPTO_THREADID a, const CRYPTO_THREADID b)
482			{
483		150900	return memcmp(a, b, sizeof(*a));
484			}
485
486			void
487			CRYPTO_THREADID_cpy(CRYPTO_THREADID dest, const CRYPTO_THREADID src)
488			{
489		104576	memcpy(dest, src, sizeof(*src));
490		52288	}
491
492			unsigned long
493			CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
494			{
495		109540	return id->val;
496			}
497
498			#ifndef OPENSSL_NO_DEPRECATED
499			unsigned long (*CRYPTO_get_id_callback(void))(void)
500			{
501			return (id_callback);
502			}
503
504			void
505			CRYPTO_set_id_callback(unsigned long (*func)(void))
506			{
507			id_callback = func;
508			}
509
510			unsigned long
511			CRYPTO_thread_id(void)
512			{
513			unsigned long ret = 0;
514
515			if (id_callback == NULL) {
516			ret = (unsigned long)getpid();
517			} else
518			ret = id_callback();
519			return (ret);
520			}
521			#endif
522
523			void
524			CRYPTO_lock(int mode, int type, const char *file, int line)
525			{
526			#ifdef LOCK_DEBUG
527			{
528			CRYPTO_THREADID id;
529			char rw_text, operation_text;
530
531			if (mode & CRYPTO_LOCK)
532			operation_text = "lock ";
533			else if (mode & CRYPTO_UNLOCK)
534			operation_text = "unlock";
535			else
536			operation_text = "ERROR ";
537
538			if (mode & CRYPTO_READ)
539			rw_text = "r";
540			else if (mode & CRYPTO_WRITE)
541			rw_text = "w";
542			else
543			rw_text = "ERROR";
544
545			CRYPTO_THREADID_current(&id);
546			fprintf(stderr, "lock:%08lx:(%s)%s %-18s %s:%d\n",
547			CRYPTO_THREADID_hash(&id), rw_text, operation_text,
548			CRYPTO_get_lock_name(type), file, line);
549			}
550			#endif
551	✗✓	294431552	if (type < 0) {
552			if (dynlock_lock_callback != NULL) {
553			struct CRYPTO_dynlock_value *pointer =
554			CRYPTO_get_dynlock_value(type);
555
556			OPENSSL_assert(pointer != NULL);
557
558			dynlock_lock_callback(mode, pointer, file, line);
559
560			CRYPTO_destroy_dynlockid(type);
561			}
562	✓✓	147215776	} else if (locking_callback != NULL)
563		80260168	locking_callback(mode, type, file, line);
564		147215776	}
565
566			int
567			CRYPTO_add_lock(int pointer, int amount, int type, const char file,
568			int line)
569			{
570			int ret = 0;
571
572	✗✓	1606014	if (add_lock_callback != NULL) {
573			#ifdef LOCK_DEBUG
574			int before= *pointer;
575			#endif
576
577			ret = add_lock_callback(pointer, amount, type, file, line);
578			#ifdef LOCK_DEBUG
579			{
580			CRYPTO_THREADID id;
581			CRYPTO_THREADID_current(&id);
582			fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
583			CRYPTO_THREADID_hash(&id), before, amount, ret,
584			CRYPTO_get_lock_name(type),
585			file, line);
586			}
587			#endif
588			} else {
589		803007	CRYPTO_lock(CRYPTO_LOCK\|CRYPTO_WRITE, type, file, line);
590
591		803007	ret= *pointer + amount;
592			#ifdef LOCK_DEBUG
593			{
594			CRYPTO_THREADID id;
595			CRYPTO_THREADID_current(&id);
596			fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
597			CRYPTO_THREADID_hash(&id), *pointer, amount, ret,
598			CRYPTO_get_lock_name(type), file, line);
599			}
600			#endif
601		803007	*pointer = ret;
602		803007	CRYPTO_lock(CRYPTO_UNLOCK\|CRYPTO_WRITE, type, file, line);
603			}
604		803007	return (ret);
605			}
606
607			const char *
608			CRYPTO_get_lock_name(int type)
609			{
610			if (type < 0)
611			return("dynamic");
612			else if (type < CRYPTO_NUM_LOCKS)
613			return (lock_names[type]);
614			else if (type - CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
615			return("ERROR");
616			else
617			return (sk_OPENSSL_STRING_value(app_locks,
618			type - CRYPTO_NUM_LOCKS));
619			}
620
621			#if defined(__i386) \|\| defined(__i386__) \|\| defined(_M_IX86) \|\| \
622			defined(__INTEL__) \|\| \
623			defined(__x86_64) \|\| defined(__x86_64__) \|\| defined(_M_AMD64) \|\| defined(_M_X64)
624
625			uint64_t OPENSSL_ia32cap_P;
626
627			uint64_t
628			OPENSSL_cpu_caps(void)
629			{
630		249502	return OPENSSL_ia32cap_P;
631			}
632
633			#if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM)
634			#define OPENSSL_CPUID_SETUP
635			void
636			OPENSSL_cpuid_setup(void)
637			{
638			static int trigger = 0;
639			uint64_t OPENSSL_ia32_cpuid(void);
640
641	✓✓	12584	if (trigger)
642			return;
643		4790	trigger = 1;
644		4790	OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid();
645		11082	}
646			#endif
647
648			#else
649			uint64_t
650			OPENSSL_cpu_caps(void)
651			{
652			return 0;
653			}
654			#endif
655
656			#if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
657			void
658			OPENSSL_cpuid_setup(void)
659			{
660			}
661			#endif
662
663			static void
664			OPENSSL_showfatal(const char *fmta, ...)
665			{
666			va_list ap;
667
668			va_start(ap, fmta);
669			vfprintf(stderr, fmta, ap);
670			va_end(ap);
671			}
672
673			void
674			OpenSSLDie(const char file, int line, const char assertion)
675			{
676			OPENSSL_showfatal(
677			"%s(%d): OpenSSL internal error, assertion failed: %s\n",
678			file, line, assertion);
679			abort();
680			}
681
682			int
683			CRYPTO_memcmp(const void in_a, const void in_b, size_t len)
684			{
685			size_t i;
686			const unsigned char *a = in_a;
687			const unsigned char *b = in_b;
688			unsigned char x = 0;
689
690			for (i = 0; i < len; i++)
691			x \|= a[i] ^ b[i];
692
693			return x;
694			}