/* crypto/mem_dbg.c */

/* 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 (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).

 *

 */

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#include "cryptlib.h"

#include <openssl/crypto.h>

#include <openssl/buffer.h>

#include <openssl/bio.h>

#include <openssl/lhash.h>

static int mh_mode = CRYPTO_MEM_CHECK_OFF;

/*

 * The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE when

 * the application asks for it (usually after library initialisation for

 * which no book-keeping is desired). State CRYPTO_MEM_CHECK_ON exists only

 * temporarily when the library thinks that certain allocations should not be

 * checked (e.g. the data structures used for memory checking).  It is not

 * suitable as an initial state: the library will unexpectedly enable memory

 * checking when it executes one of those sections that want to disable

 * checking temporarily. State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes

 * no sense whatsoever.

 */

static unsigned long order = 0; /* number of memory requests */

DECLARE_LHASH_OF(MEM);

static LHASH_OF(MEM) *mh = NULL; /* hash-table of memory requests (address as

                                  * key); access requires MALLOC2 lock */

typedef struct app_mem_info_st

/*-

 * For application-defined information (static C-string `info')

 * to be displayed in memory leak list.

 * Each thread has its own stack.  For applications, there is

 *   CRYPTO_push_info("...")     to push an entry,

 *   CRYPTO_pop_info()           to pop an entry,

 *   CRYPTO_remove_all_info()    to pop all entries.

 */

{

    CRYPTO_THREADID threadid;

    const char *file;

    int line;

    const char *info;

    struct app_mem_info_st *next; /* tail of thread's stack */

    int references;

} APP_INFO;

static void app_info_free(APP_INFO *);

DECLARE_LHASH_OF(APP_INFO);

static LHASH_OF(APP_INFO) *amih = NULL; /* hash-table with those

                                         * app_mem_info_st's that are at the

                                         * top of their thread's stack (with

                                         * `thread' as key); access requires

                                         * MALLOC2 lock */

typedef struct mem_st

/* memory-block description */

{

    void *addr;

    int num;

    const char *file;

    int line;

    CRYPTO_THREADID threadid;

    unsigned long order;

    time_t time;

    APP_INFO *app_info;

} MEM;

static long options =           /* extra information to be recorded */

#if defined(CRYPTO_MDEBUG_TIME) || defined(CRYPTO_MDEBUG_ALL)

    V_CRYPTO_MDEBUG_TIME |

#endif

#if defined(CRYPTO_MDEBUG_THREAD) || defined(CRYPTO_MDEBUG_ALL)

    V_CRYPTO_MDEBUG_THREAD |

#endif

    0;

static unsigned int num_disable = 0; /* num_disable > 0 iff mh_mode ==

                                      * CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE) */

/*

 * Valid iff num_disable > 0.  CRYPTO_LOCK_MALLOC2 is locked exactly in this

 * case (by the thread named in disabling_thread).

 */

static CRYPTO_THREADID disabling_threadid;

static void app_info_free(APP_INFO *inf)

{

    if (--(inf->references) <= 0) {

        if (inf->next != NULL) {

            app_info_free(inf->next);

        }

        OPENSSL_free(inf);

    }

}

int CRYPTO_mem_ctrl(int mode)

{

    int ret = mh_mode;

    CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);

    switch (mode) {

        /*

         * for applications (not to be called while multiple threads use the

         * library):

         */

    case CRYPTO_MEM_CHECK_ON:  /* aka MemCheck_start() */

        mh_mode = CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE;

        num_disable = 0;

        break;

    case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */

        mh_mode = 0;

        num_disable = 0;        /* should be true *before* MemCheck_stop is

                                 * used, or there'll be a lot of confusion */

        break;

        /* switch off temporarily (for library-internal use): */

    case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */

        if (mh_mode & CRYPTO_MEM_CHECK_ON) {

            CRYPTO_THREADID cur;

            CRYPTO_THREADID_current(&cur);

            /* see if we don't have the MALLOC2 lock already */

            if (!num_disable

                || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) {

                /*

                 * Long-time lock CRYPTO_LOCK_MALLOC2 must not be claimed

                 * while we're holding CRYPTO_LOCK_MALLOC, or we'll deadlock

                 * if somebody else holds CRYPTO_LOCK_MALLOC2 (and cannot

                 * release it because we block entry to this function). Give

                 * them a chance, first, and then claim the locks in

                 * appropriate order (long-time lock first).

                 */

                CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);

                /*

                 * Note that after we have waited for CRYPTO_LOCK_MALLOC2 and

                 * CRYPTO_LOCK_MALLOC, we'll still be in the right "case" and

                 * "if" branch because MemCheck_start and MemCheck_stop may

                 * never be used while there are multiple OpenSSL threads.

                 */

                CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);

                CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);

                mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;

                CRYPTO_THREADID_cpy(&disabling_threadid, &cur);

            }

            num_disable++;

        }

        break;

    case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */

        if (mh_mode & CRYPTO_MEM_CHECK_ON) {

            if (num_disable) {  /* always true, or something is going wrong */

                num_disable--;

                if (num_disable == 0) {

                    mh_mode |= CRYPTO_MEM_CHECK_ENABLE;

                    CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);

                }

            }

        }

        break;

    default:

        break;

    }

    CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);

    return (ret);

}

int CRYPTO_is_mem_check_on(void)

{

    int ret = 0;

    if (mh_mode & CRYPTO_MEM_CHECK_ON) {

        CRYPTO_THREADID cur;

        CRYPTO_THREADID_current(&cur);

        CRYPTO_r_lock(CRYPTO_LOCK_MALLOC);

        ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)

            || CRYPTO_THREADID_cmp(&disabling_threadid, &cur);

        CRYPTO_r_unlock(CRYPTO_LOCK_MALLOC);

    }

    return (ret);

}

void CRYPTO_dbg_set_options(long bits)

{

    options = bits;

}

long CRYPTO_dbg_get_options(void)

{

    return options;

}

static int mem_cmp(const MEM *a, const MEM *b)

{

#ifdef _WIN64

    const char *ap = (const char *)a->addr, *bp = (const char *)b->addr;

    if (ap == bp)

        return 0;

    else if (ap > bp)

        return 1;

    else

        return -1;

#else

    return (const char *)a->addr - (const char *)b->addr;

#endif

}

static IMPLEMENT_LHASH_COMP_FN(mem, MEM)

static unsigned long mem_hash(const MEM *a)

{

    unsigned long ret;

    ret = (unsigned long)a->addr;

    ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;

    return (ret);

}

static IMPLEMENT_LHASH_HASH_FN(mem, MEM)

/* static int app_info_cmp(APP_INFO *a, APP_INFO *b) */

static int app_info_cmp(const void *a_void, const void *b_void)

{

    return CRYPTO_THREADID_cmp(&((const APP_INFO *)a_void)->threadid,

                               &((const APP_INFO *)b_void)->threadid);

}

static IMPLEMENT_LHASH_COMP_FN(app_info, APP_INFO)

static unsigned long app_info_hash(const APP_INFO *a)

{

    unsigned long ret;

    ret = CRYPTO_THREADID_hash(&a->threadid);

    /* This is left in as a "who am I to question legacy?" measure */

    ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;

    return (ret);

}

static IMPLEMENT_LHASH_HASH_FN(app_info, APP_INFO)

static APP_INFO *pop_info(void)

{

    APP_INFO tmp;

    APP_INFO *ret = NULL;

    if (amih != NULL) {

        CRYPTO_THREADID_current(&tmp.threadid);

        if ((ret = lh_APP_INFO_delete(amih, &tmp)) != NULL) {

            APP_INFO *next = ret->next;

            if (next != NULL) {

                next->references++;

                (void)lh_APP_INFO_insert(amih, next);

            }

#ifdef LEVITTE_DEBUG_MEM

            if (CRYPTO_THREADID_cmp(&ret->threadid, &tmp.threadid)) {

                fprintf(stderr,

                        "pop_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n",

                        CRYPTO_THREADID_hash(&ret->threadid),

                        CRYPTO_THREADID_hash(&tmp.threadid));

                abort();

            }

#endif

            if (--(ret->references) <= 0) {

                ret->next = NULL;

                if (next != NULL)

                    next->references--;

                OPENSSL_free(ret);

            }

        }

    }

    return (ret);

}

int CRYPTO_push_info_(const char *info, const char *file, int line)

{

    APP_INFO *ami, *amim;

    int ret = 0;

    if (is_MemCheck_on()) {

        MemCheck_off();         /* obtain MALLOC2 lock */

        if ((ami = (APP_INFO *)OPENSSL_malloc(sizeof(APP_INFO))) == NULL) {

            ret = 0;

            goto err;

        }

        if (amih == NULL) {

            if ((amih = lh_APP_INFO_new()) == NULL) {

                OPENSSL_free(ami);

                ret = 0;

                goto err;

            }

        }

        CRYPTO_THREADID_current(&ami->threadid);

        ami->file = file;

        ami->line = line;

        ami->info = info;

        ami->references = 1;

        ami->next = NULL;

        if ((amim = lh_APP_INFO_insert(amih, ami)) != NULL) {

#ifdef LEVITTE_DEBUG_MEM

            if (CRYPTO_THREADID_cmp(&ami->threadid, &amim->threadid)) {

                fprintf(stderr,

                        "CRYPTO_push_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n",

                        CRYPTO_THREADID_hash(&amim->threadid),

                        CRYPTO_THREADID_hash(&ami->threadid));

                abort();

            }

#endif

            ami->next = amim;

        }

 err:

        MemCheck_on();          /* release MALLOC2 lock */

    }

    return (ret);

}

int CRYPTO_pop_info(void)

{

    int ret = 0;

    if (is_MemCheck_on()) {     /* _must_ be true, or something went severely

                                 * wrong */

        MemCheck_off();         /* obtain MALLOC2 lock */

        ret = (pop_info() != NULL);

        MemCheck_on();          /* release MALLOC2 lock */

    }

    return (ret);

}

int CRYPTO_remove_all_info(void)

{

    int ret = 0;

    if (is_MemCheck_on()) {     /* _must_ be true */

        MemCheck_off();         /* obtain MALLOC2 lock */

        while (pop_info() != NULL)

            ret++;

        MemCheck_on();          /* release MALLOC2 lock */

    }

    return (ret);

}

static unsigned long break_order_num = 0;

void CRYPTO_dbg_malloc(void *addr, int num, const char *file, int line,

                       int before_p)

{

    MEM *m, *mm;

    APP_INFO tmp, *amim;

    switch (before_p & 127) {

    case 0:

        break;

    case 1:

        if (addr == NULL)

            break;

        if (is_MemCheck_on()) {

            MemCheck_off();     /* make sure we hold MALLOC2 lock */

            if ((m = (MEM *)OPENSSL_malloc(sizeof(MEM))) == NULL) {

                OPENSSL_free(addr);

                MemCheck_on();  /* release MALLOC2 lock if num_disabled drops

                                 * to 0 */

                return;

            }

            if (mh == NULL) {

                if ((mh = lh_MEM_new()) == NULL) {

                    OPENSSL_free(addr);

                    OPENSSL_free(m);

                    addr = NULL;

                    goto err;

                }

            }

            m->addr = addr;

            m->file = file;

            m->line = line;

            m->num = num;

            if (options & V_CRYPTO_MDEBUG_THREAD)

                CRYPTO_THREADID_current(&m->threadid);

            else

                memset(&m->threadid, 0, sizeof(m->threadid));

            if (order == break_order_num) {

                /* BREAK HERE */

                m->order = order;

            }

            m->order = order++;

#ifdef LEVITTE_DEBUG_MEM

            fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] %c 0x%p (%d)\n",

                    m->order, (before_p & 128) ? '*' : '+', m->addr, m->num);

#endif

            if (options & V_CRYPTO_MDEBUG_TIME)

                m->time = time(NULL);

            else

                m->time = 0;

            CRYPTO_THREADID_current(&tmp.threadid);

            m->app_info = NULL;

            if (amih != NULL

                && (amim = lh_APP_INFO_retrieve(amih, &tmp)) != NULL) {

                m->app_info = amim;

                amim->references++;

            }

            if ((mm = lh_MEM_insert(mh, m)) != NULL) {

                /* Not good, but don't sweat it */

                if (mm->app_info != NULL) {

                    mm->app_info->references--;

                }

                OPENSSL_free(mm);

            }

 err:

            MemCheck_on();      /* release MALLOC2 lock if num_disabled drops

                                 * to 0 */

        }

        break;

    }

    return;

}

void CRYPTO_dbg_free(void *addr, int before_p)

{

    MEM m, *mp;

    switch (before_p) {

    case 0:

        if (addr == NULL)

            break;

        if (is_MemCheck_on() && (mh != NULL)) {

            MemCheck_off();     /* make sure we hold MALLOC2 lock */

            m.addr = addr;

            mp = lh_MEM_delete(mh, &m);

            if (mp != NULL) {

#ifdef LEVITTE_DEBUG_MEM

                fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] - 0x%p (%d)\n",

                        mp->order, mp->addr, mp->num);

#endif

                if (mp->app_info != NULL)

                    app_info_free(mp->app_info);

                OPENSSL_free(mp);

            }

            MemCheck_on();      /* release MALLOC2 lock if num_disabled drops

                                 * to 0 */

        }

        break;

    case 1:

        break;

    }

}

void CRYPTO_dbg_realloc(void *addr1, void *addr2, int num,

                        const char *file, int line, int before_p)

{

    MEM m, *mp;

#ifdef LEVITTE_DEBUG_MEM

    fprintf(stderr,

            "LEVITTE_DEBUG_MEM: --> CRYPTO_dbg_malloc(addr1 = %p, addr2 = %p, num = %d, file = \"%s\", line = %d, before_p = %d)\n",

            addr1, addr2, num, file, line, before_p);

#endif

    switch (before_p) {

    case 0:

        break;

    case 1:

        if (addr2 == NULL)

            break;

        if (addr1 == NULL) {

            CRYPTO_dbg_malloc(addr2, num, file, line, 128 | before_p);

            break;

        }

        if (is_MemCheck_on()) {

            MemCheck_off();     /* make sure we hold MALLOC2 lock */

            m.addr = addr1;

            mp = lh_MEM_delete(mh, &m);

            if (mp != NULL) {

#ifdef LEVITTE_DEBUG_MEM

                fprintf(stderr,

                        "LEVITTE_DEBUG_MEM: [%5ld] * 0x%p (%d) -> 0x%p (%d)\n",

                        mp->order, mp->addr, mp->num, addr2, num);

#endif

                mp->addr = addr2;

                mp->num = num;

                (void)lh_MEM_insert(mh, mp);

            }

            MemCheck_on();      /* release MALLOC2 lock if num_disabled drops

                                 * to 0 */

        }

        break;

    }

    return;

}

typedef struct mem_leak_st {

    BIO *bio;

    int chunks;

    long bytes;

} MEM_LEAK;

static void print_leak_doall_arg(const MEM *m, MEM_LEAK *l)

{

    char buf[1024];

    char *bufp = buf;

    APP_INFO *amip;

    int ami_cnt;

    struct tm *lcl = NULL;

    CRYPTO_THREADID ti;

#define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))

    if (m->addr == (char *)l->bio)

        return;

    if (options & V_CRYPTO_MDEBUG_TIME) {

        lcl = localtime(&m->time);

        BIO_snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",

                     lcl->tm_hour, lcl->tm_min, lcl->tm_sec);

        bufp += strlen(bufp);

    }

    BIO_snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",

                 m->order, m->file, m->line);

    bufp += strlen(bufp);

    if (options & V_CRYPTO_MDEBUG_THREAD) {

        BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ",

                     CRYPTO_THREADID_hash(&m->threadid));

        bufp += strlen(bufp);

    }

    BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%08lX\n",

                 m->num, (unsigned long)m->addr);

    bufp += strlen(bufp);

    BIO_puts(l->bio, buf);

    l->chunks++;

    l->bytes += m->num;

    amip = m->app_info;

    ami_cnt = 0;

    if (!amip)

        return;

    CRYPTO_THREADID_cpy(&ti, &amip->threadid);

    do {

        int buf_len;

        int info_len;

        ami_cnt++;

        memset(buf, '>', ami_cnt);

        BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt,

                     " thread=%lu, file=%s, line=%d, info=\"",

                     CRYPTO_THREADID_hash(&amip->threadid), amip->file,

                     amip->line);

        buf_len = strlen(buf);

        info_len = strlen(amip->info);

        if (128 - buf_len - 3 < info_len) {

            memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);

            buf_len = 128 - 3;

        } else {

            BUF_strlcpy(buf + buf_len, amip->info, sizeof buf - buf_len);

            buf_len = strlen(buf);

        }

        BIO_snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n");

        BIO_puts(l->bio, buf);

        amip = amip->next;

    }

    while (amip && !CRYPTO_THREADID_cmp(&amip->threadid, &ti));

#ifdef LEVITTE_DEBUG_MEM

    if (amip) {

        fprintf(stderr, "Thread switch detected in backtrace!!!!\n");

        abort();

    }

#endif

}

static IMPLEMENT_LHASH_DOALL_ARG_FN(print_leak, const MEM, MEM_LEAK)

void CRYPTO_mem_leaks(BIO *b)

{

    MEM_LEAK ml;

    if (mh == NULL && amih == NULL)

        return;

    MemCheck_off();             /* obtain MALLOC2 lock */

    ml.bio = b;

    ml.bytes = 0;

    ml.chunks = 0;

    if (mh != NULL)

        lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK, &ml);

    if (ml.chunks != 0) {

        BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks);

#ifdef CRYPTO_MDEBUG_ABORT

        abort();

#endif

    } else {

        /*

         * Make sure that, if we found no leaks, memory-leak debugging itself

         * does not introduce memory leaks (which might irritate external

         * debugging tools). (When someone enables leak checking, but does not

         * call this function, we declare it to be their fault.) XXX This

         * should be in CRYPTO_mem_leaks_cb, and CRYPTO_mem_leaks should be

         * implemented by using CRYPTO_mem_leaks_cb. (Also there should be a

         * variant of lh_doall_arg that takes a function pointer instead of a

         * void *; this would obviate the ugly and illegal void_fn_to_char

         * kludge in CRYPTO_mem_leaks_cb. Otherwise the code police will come

         * and get us.)

         */

        int old_mh_mode;

        CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);

        /*

         * avoid deadlock when lh_free() uses CRYPTO_dbg_free(), which uses

         * CRYPTO_is_mem_check_on

         */

        old_mh_mode = mh_mode;

        mh_mode = CRYPTO_MEM_CHECK_OFF;

        if (mh != NULL) {

            lh_MEM_free(mh);

            mh = NULL;

        }

        if (amih != NULL) {

            if (lh_APP_INFO_num_items(amih) == 0) {

                lh_APP_INFO_free(amih);

                amih = NULL;

            }

        }

        mh_mode = old_mh_mode;

        CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);

    }

    MemCheck_on();              /* release MALLOC2 lock */

}

#ifndef OPENSSL_NO_FP_API

void CRYPTO_mem_leaks_fp(FILE *fp)

{

    BIO *b;

    if (mh == NULL)

        return;

    /*

     * Need to turn off memory checking when allocated BIOs ... especially as

     * we're creating them at a time when we're trying to check we've not

     * left anything un-free()'d!!

     */

    MemCheck_off();

    b = BIO_new(BIO_s_file());

    MemCheck_on();

    if (!b)

        return;

    BIO_set_fp(b, fp, BIO_NOCLOSE);

    CRYPTO_mem_leaks(b);

    BIO_free(b);

}

#endif

/*

 * FIXME: We really don't allow much to the callback.  For example, it has no

 * chance of reaching the info stack for the item it processes.  Should it

 * really be this way? -- Richard Levitte

 */

/*

 * NB: The prototypes have been typedef'd to CRYPTO_MEM_LEAK_CB inside

 * crypto.h If this code is restructured, remove the callback type if it is

 * no longer needed. -- Geoff Thorpe

 */

/*

 * Can't pass CRYPTO_MEM_LEAK_CB directly to lh_MEM_doall_arg because it is a

 * function pointer and conversion to void * is prohibited. Instead pass its

 * address

 */

typedef CRYPTO_MEM_LEAK_CB *PCRYPTO_MEM_LEAK_CB;

static void cb_leak_doall_arg(const MEM *m, PCRYPTO_MEM_LEAK_CB *cb)

{

    (*cb) (m->order, m->file, m->line, m->num, m->addr);

}

static IMPLEMENT_LHASH_DOALL_ARG_FN(cb_leak, const MEM, PCRYPTO_MEM_LEAK_CB)

void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb)

{

    if (mh == NULL)

        return;

    CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);

    lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), PCRYPTO_MEM_LEAK_CB,

                     &cb);

    CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);

}