1 files changed, 777 insertions, 0 deletions

diff --git a/src/lib/libcrypto/mem_dbg.c b/src/lib/libcrypto/mem_dbg.c
new file mode 100644
index 0000000000..ea94eee6f4
--- /dev/null
+++ b/src/lib/libcrypto/mem_dbg.c
@@ -0,0 +1,777 @@
+/* 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.]
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>       
+#include <openssl/crypto.h>
+#include <openssl/buffer.h>
+#include <openssl/bio.h>
+#include <openssl/lhash.h>
+#include "cryptlib.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 */
+static LHASH *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.
+ */
+        {       
+        unsigned long thread;
+        const char *file;
+        int line;
+        const char *info;
+        struct app_mem_info_st *next; /* tail of thread's stack */
+        int references;
+        } APP_INFO;
+
+static LHASH *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;
+        unsigned long thread;
+        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)
+                                      */
+static unsigned long disabling_thread = 0; /* Valid iff num_disable > 0.
+                                            * CRYPTO_LOCK_MALLOC2 is locked
+                                            * exactly in this case (by the
+                                            * thread named in disabling_thread).
+                                            */
+
+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)
+                        {
+                        if (!num_disable || (disabling_thread != CRYPTO_thread_id())) /* otherwise we already have the MALLOC2 lock */
+                                {
+                                /* 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;
+                                disabling_thread=CRYPTO_thread_id();
+                                }
+                        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_r_lock(CRYPTO_LOCK_MALLOC);
+
+                ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
+                        || (disabling_thread != CRYPTO_thread_id());
+
+                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(MEM *a, MEM *b) */
+static int mem_cmp(const void *a_void, const void *b_void)
+        {
+        return((const char *)((const MEM *)a_void)->addr
+                - (const char *)((const MEM *)b_void)->addr);
+        }
+
+/* static unsigned long mem_hash(MEM *a) */
+static unsigned long mem_hash(const void *a_void)
+        {
+        unsigned long ret;
+
+        ret=(unsigned long)((const MEM *)a_void)->addr;
+
+        ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
+        return(ret);
+        }
+
+/* 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(((const APP_INFO *)a_void)->thread
+                != ((const APP_INFO *)b_void)->thread);
+        }
+
+/* static unsigned long app_info_hash(APP_INFO *a) */
+static unsigned long app_info_hash(const void *a_void)
+        {
+        unsigned long ret;
+
+        ret=(unsigned long)((const APP_INFO *)a_void)->thread;
+
+        ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
+        return(ret);
+        }
+
+static APP_INFO *pop_info(void)
+        {
+        APP_INFO tmp;
+        APP_INFO *ret = NULL;
+
+        if (amih != NULL)
+                {
+                tmp.thread=CRYPTO_thread_id();
+                if ((ret=(APP_INFO *)lh_delete(amih,&tmp)) != NULL)
+                        {
+                        APP_INFO *next=ret->next;
+
+                        if (next != NULL)
+                                {
+                                next->references++;
+                                lh_insert(amih,(char *)next);
+                                }
+#ifdef LEVITTE_DEBUG_MEM
+                        if (ret->thread != tmp.thread)
+                                {
+                                fprintf(stderr, "pop_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
+                                        ret->thread, tmp.thread);
+                                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_new(app_info_hash, app_info_cmp)) == NULL)
+                                {
+                                OPENSSL_free(ami);
+                                ret=0;
+                                goto err;
+                                }
+                        }
+
+                ami->thread=CRYPTO_thread_id();
+                ami->file=file;
+                ami->line=line;
+                ami->info=info;
+                ami->references=1;
+                ami->next=NULL;
+
+                if ((amim=(APP_INFO *)lh_insert(amih,(char *)ami)) != NULL)
+                        {
+#ifdef LEVITTE_DEBUG_MEM
+                        if (ami->thread != amim->thread)
+                                {
+                                fprintf(stderr, "CRYPTO_push_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
+                                        amim->thread, ami->thread);
+                                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_new(mem_hash, mem_cmp)) == 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)
+                                m->thread=CRYPTO_thread_id();
+                        else
+                                m->thread=0;
+
+                        if (order == break_order_num)
+                                {
+                                /* BREAK HERE */
+                                m->order=order;
+                                }
+                        m->order=order++;
+#ifdef LEVITTE_DEBUG_MEM
+                        fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5d] %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;
+
+                        tmp.thread=CRYPTO_thread_id();
+                        m->app_info=NULL;
+                        if (amih != NULL
+                                && (amim=(APP_INFO *)lh_retrieve(amih,(char *)&tmp)) != NULL)
+                                {
+                                m->app_info = amim;
+                                amim->references++;
+                                }
+
+                        if ((mm=(MEM *)lh_insert(mh,(char *)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=(MEM *)lh_delete(mh,(char *)&m);
+                        if (mp != NULL)
+                                {
+#ifdef LEVITTE_DEBUG_MEM
+                        fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5d] - 0x%p (%d)\n",
+                                mp->order, mp->addr, mp->num);
+#endif
+                                if (mp->app_info != NULL)
+                                        {
+                                        mp->app_info->references--;
+                                        }
+                                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=(MEM *)lh_delete(mh,(char *)&m);
+                        if (mp != NULL)
+                                {
+#ifdef LEVITTE_DEBUG_MEM
+                                fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5d] * 0x%p (%d) -> 0x%p (%d)\n",
+                                        mp->order,
+                                        mp->addr, mp->num,
+                                        addr2, num);
+#endif
+                                mp->addr=addr2;
+                                mp->num=num;
+                                lh_insert(mh,(char *)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(const MEM *m, MEM_LEAK *l)
+        {
+        char buf[1024];
+        char *bufp = buf;
+        APP_INFO *amip;
+        int ami_cnt;
+        struct tm *lcl = NULL;
+        unsigned long 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);
+        
+                snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
+                        lcl->tm_hour,lcl->tm_min,lcl->tm_sec);
+                bufp += strlen(bufp);
+                }
+
+        snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
+                m->order,m->file,m->line);
+        bufp += strlen(bufp);
+
+        if (options & V_CRYPTO_MDEBUG_THREAD)
+                {
+                snprintf(bufp, BUF_REMAIN, "thread=%lu, ", m->thread);
+                bufp += strlen(bufp);
+                }
+
+        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;
+        ti=amip->thread;
+        
+        do
+                {
+                int buf_len;
+                int info_len;
+
+                ami_cnt++;
+                memset(buf,'>',ami_cnt);
+                snprintf(buf + ami_cnt, sizeof buf - ami_cnt,
+                        " thread=%lu, file=%s, line=%d, info=\"",
+                        amip->thread, 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
+                        {
+                        strlcpy(buf + buf_len, amip->info,
+                                sizeof buf - buf_len);
+                        buf_len = strlen(buf);
+                        }
+                snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n");
+                
+                BIO_puts(l->bio,buf);
+
+                amip = amip->next;
+                }
+        while(amip && amip->thread == 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;
+        char buf[80];
+
+        if (mh == NULL && amih == NULL)
+                return;
+
+        MemCheck_off(); /* obtain MALLOC2 lock */
+
+        ml.bio=b;
+        ml.bytes=0;
+        ml.chunks=0;
+        if (mh != NULL)
+                lh_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak),
+                                (char *)&ml);
+        if (ml.chunks != 0)
+                {
+                snprintf(buf,sizeof buf,"%ld bytes leaked in %d chunks\n",
+                        ml.bytes,ml.chunks);
+                BIO_puts(b,buf);
+                }
+        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 their 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_free(mh);
+                        mh = NULL;
+                        }
+                if (amih != NULL)
+                        {
+                        if (lh_num_items(amih) == 0) 
+                                {
+                                lh_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 */
+static void cb_leak(const MEM *m, CRYPTO_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 *, CRYPTO_MEM_LEAK_CB **)
+
+void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb)
+        {
+        if (mh == NULL) return;
+        CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
+        lh_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), &cb);
+        CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
+        }