X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=crypto%2Fmem_dbg.c;h=1a08b2bb9eec51192b05a312c0b2e8782a9f0ad8;hb=HEAD;hp=0b487082326283bdde007c783ffe7d1069e2b6ad;hpb=aa6bb1352b1026b20a23b49da4efdcf171926eb0;p=thirdparty%2Fopenssl.git

diff --git a/crypto/mem_dbg.c b/crypto/mem_dbg.c
deleted file mode 100644
index 0b48708232..0000000000
--- a/crypto/mem_dbg.c
+++ /dev/null
@@ -1,617 +0,0 @@
-/*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License").  You may not use
- * this file except in compliance with the License.  You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-#include "internal/cryptlib.h"
-#include <openssl/crypto.h>
-#include <openssl/buffer.h>
-#include "internal/bio.h"
-#include <openssl/lhash.h>
-
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
-# include <execinfo.h>
-#endif
-
-/*
- * 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.
- */
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG
-static int mh_mode = CRYPTO_MEM_CHECK_OFF;
-#endif
-
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG
-static unsigned long order = 0; /* number of memory requests */
-
-/*-
- * 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
- *   OPENSSL_mem_debug_push("...")     to push an entry,
- *   OPENSSL_mem_debug_pop()     to pop an entry,
- */
-struct app_mem_info_st {
-    CRYPTO_THREAD_ID threadid;
-    const char *file;
-    int line;
-    const char *info;
-    struct app_mem_info_st *next; /* tail of thread's stack */
-    int references;
-};
-
-static CRYPTO_ONCE memdbg_init = CRYPTO_ONCE_STATIC_INIT;
-static CRYPTO_RWLOCK *malloc_lock = NULL;
-static CRYPTO_RWLOCK *long_malloc_lock = NULL;
-static CRYPTO_THREAD_LOCAL appinfokey;
-
-/* memory-block description */
-struct mem_st {
-    void *addr;
-    int num;
-    const char *file;
-    int line;
-    CRYPTO_THREAD_ID threadid;
-    unsigned long order;
-    time_t time;
-    APP_INFO *app_info;
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
-    void *array[30];
-    size_t array_siz;
-#endif
-};
-
-static LHASH_OF(MEM) *mh = NULL; /* hash-table of memory requests (address as
-                                  * key); access requires MALLOC2 lock */
-
-/* num_disable > 0 iff mh_mode == CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE) */
-static unsigned int num_disable = 0;
-
-/*
- * Valid iff num_disable > 0.  long_malloc_lock is locked exactly in this
- * case (by the thread named in disabling_thread).
- */
-static CRYPTO_THREAD_ID disabling_threadid;
-
-static void do_memdbg_init(void)
-{
-    malloc_lock = CRYPTO_THREAD_lock_new();
-    long_malloc_lock = CRYPTO_THREAD_lock_new();
-    CRYPTO_THREAD_init_local(&appinfokey, NULL);
-}
-
-static void app_info_free(APP_INFO *inf)
-{
-    if (!inf)
-        return;
-    if (--(inf->references) <= 0) {
-        app_info_free(inf->next);
-        OPENSSL_free(inf);
-    }
-}
-#endif
-
-int CRYPTO_mem_ctrl(int mode)
-{
-#ifdef OPENSSL_NO_CRYPTO_MDEBUG
-    return mode - mode;
-#else
-    int ret = mh_mode;
-
-    CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-
-    CRYPTO_THREAD_write_lock(malloc_lock);
-    switch (mode) {
-    default:
-        break;
-
-    case CRYPTO_MEM_CHECK_ON:
-        mh_mode = CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE;
-        num_disable = 0;
-        break;
-
-    case CRYPTO_MEM_CHECK_OFF:
-        mh_mode = 0;
-        num_disable = 0;
-        break;
-
-    /* switch off temporarily (for library-internal use): */
-    case CRYPTO_MEM_CHECK_DISABLE:
-        if (mh_mode & CRYPTO_MEM_CHECK_ON) {
-            CRYPTO_THREAD_ID cur = CRYPTO_THREAD_get_current_id();
-            /* see if we don't have long_malloc_lock already */
-            if (!num_disable
-                || !CRYPTO_THREAD_compare_id(disabling_threadid, cur)) {
-                /*
-                 * Long-time lock long_malloc_lock must not be claimed
-                 * while we're holding malloc_lock, or we'll deadlock
-                 * if somebody else holds long_malloc_lock (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_THREAD_unlock(malloc_lock);
-                /*
-                 * Note that after we have waited for long_malloc_lock and
-                 * malloc_lock, 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_THREAD_write_lock(long_malloc_lock);
-                CRYPTO_THREAD_write_lock(malloc_lock);
-                mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;
-                disabling_threadid = cur;
-            }
-            num_disable++;
-        }
-        break;
-
-    case CRYPTO_MEM_CHECK_ENABLE:
-        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_THREAD_unlock(long_malloc_lock);
-                }
-            }
-        }
-        break;
-    }
-    CRYPTO_THREAD_unlock(malloc_lock);
-    return (ret);
-#endif
-}
-
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG
-
-static int mem_check_on(void)
-{
-    int ret = 0;
-    CRYPTO_THREAD_ID cur;
-
-    if (mh_mode & CRYPTO_MEM_CHECK_ON) {
-        CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-
-        cur = CRYPTO_THREAD_get_current_id();
-        CRYPTO_THREAD_read_lock(malloc_lock);
-
-        ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
-            || !CRYPTO_THREAD_compare_id(disabling_threadid, cur);
-
-        CRYPTO_THREAD_unlock(malloc_lock);
-    }
-    return (ret);
-}
-
-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 unsigned long mem_hash(const MEM *a)
-{
-    size_t ret;
-
-    ret = (size_t)a->addr;
-
-    ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;
-    return (ret);
-}
-
-/* returns 1 if there was an info to pop, 0 if the stack was empty. */
-static int pop_info(void)
-{
-    APP_INFO *current = NULL;
-
-    CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-    current = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
-    if (current != NULL) {
-        APP_INFO *next = current->next;
-
-        if (next != NULL) {
-            next->references++;
-            CRYPTO_THREAD_set_local(&appinfokey, next);
-        } else {
-            CRYPTO_THREAD_set_local(&appinfokey, NULL);
-        }
-        if (--(current->references) <= 0) {
-            current->next = NULL;
-            if (next != NULL)
-                next->references--;
-            OPENSSL_free(current);
-        }
-        return 1;
-    }
-    return 0;
-}
-
-int CRYPTO_mem_debug_push(const char *info, const char *file, int line)
-{
-    APP_INFO *ami, *amim;
-    int ret = 0;
-
-    if (mem_check_on()) {
-        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-
-        CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-
-        if ((ami = OPENSSL_malloc(sizeof(*ami))) == NULL)
-            goto err;
-
-        ami->threadid = CRYPTO_THREAD_get_current_id();
-        ami->file = file;
-        ami->line = line;
-        ami->info = info;
-        ami->references = 1;
-        ami->next = NULL;
-
-        amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
-        CRYPTO_THREAD_set_local(&appinfokey, ami);
-
-        if (amim != NULL)
-            ami->next = amim;
-        ret = 1;
- err:
-        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-    }
-
-    return (ret);
-}
-
-int CRYPTO_mem_debug_pop(void)
-{
-    int ret = 0;
-
-    if (mem_check_on()) {
-        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-        ret = pop_info();
-        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-    }
-    return (ret);
-}
-
-static unsigned long break_order_num = 0;
-
-void CRYPTO_mem_debug_malloc(void *addr, size_t num, int before_p,
-                             const char *file, int line)
-{
-    MEM *m, *mm;
-    APP_INFO *amim;
-
-    switch (before_p & 127) {
-    case 0:
-        break;
-    case 1:
-        if (addr == NULL)
-            break;
-
-        if (mem_check_on()) {
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-
-            CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-
-            if ((m = OPENSSL_malloc(sizeof(*m))) == NULL) {
-                OPENSSL_free(addr);
-                CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-                return;
-            }
-            if (mh == NULL) {
-                if ((mh = lh_MEM_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;
-            m->threadid = CRYPTO_THREAD_get_current_id();
-
-            if (order == break_order_num) {
-                /* BREAK HERE */
-                m->order = order;
-            }
-            m->order = order++;
-# ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
-            m->array_siz = backtrace(m->array, OSSL_NELEM(m->array));
-# endif
-            m->time = time(NULL);
-
-            amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
-            m->app_info = amim;
-            if (amim != NULL)
-                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:
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-        }
-        break;
-    }
-    return;
-}
-
-void CRYPTO_mem_debug_free(void *addr, int before_p,
-        const char *file, int line)
-{
-    MEM m, *mp;
-
-    switch (before_p) {
-    case 0:
-        if (addr == NULL)
-            break;
-
-        if (mem_check_on() && (mh != NULL)) {
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-
-            m.addr = addr;
-            mp = lh_MEM_delete(mh, &m);
-            if (mp != NULL) {
-                app_info_free(mp->app_info);
-                OPENSSL_free(mp);
-            }
-
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-        }
-        break;
-    case 1:
-        break;
-    }
-}
-
-void CRYPTO_mem_debug_realloc(void *addr1, void *addr2, size_t num,
-                              int before_p, const char *file, int line)
-{
-    MEM m, *mp;
-
-    switch (before_p) {
-    case 0:
-        break;
-    case 1:
-        if (addr2 == NULL)
-            break;
-
-        if (addr1 == NULL) {
-            CRYPTO_mem_debug_malloc(addr2, num, 128 | before_p, file, line);
-            break;
-        }
-
-        if (mem_check_on()) {
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-
-            m.addr = addr1;
-            mp = lh_MEM_delete(mh, &m);
-            if (mp != NULL) {
-                mp->addr = addr2;
-                mp->num = num;
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
-                mp->array_siz = backtrace(mp->array, OSSL_NELEM(mp->array));
-#endif
-                (void)lh_MEM_insert(mh, mp);
-            }
-
-            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-        }
-        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;
-    /*
-     * Convert between CRYPTO_THREAD_ID (which could be anything at all) and
-     * a long. This may not be meaningful depending on what CRYPTO_THREAD_ID is
-     * but hopefully should give something sensible on most platforms
-     */
-    union {
-        CRYPTO_THREAD_ID tid;
-        unsigned long ltid;
-    } tid;
-    CRYPTO_THREAD_ID ti;
-
-#define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))
-
-    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);
-
-    tid.ltid = 0;
-    tid.tid = m->threadid;
-    BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ", tid.ltid);
-    bufp += strlen(bufp);
-
-    BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%p\n",
-                 m->num, 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) {
-        ti = amip->threadid;
-
-        do {
-            int buf_len;
-            int info_len;
-
-            ami_cnt++;
-            memset(buf, '>', ami_cnt);
-            tid.ltid = 0;
-            tid.tid = amip->threadid;
-            BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt,
-                         " thread=%lu, file=%s, line=%d, info=\"",
-                         tid.ltid, 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 {
-                OPENSSL_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_THREAD_compare_id(amip->threadid, ti));
-    }
-
-#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
-    {
-        size_t i;
-        char **strings = backtrace_symbols(m->array, m->array_siz);
-
-        for (i = 0; i < m->array_siz; i++)
-            fprintf(stderr, "##> %s\n", strings[i]);
-        free(strings);
-    }
-#endif
-}
-
-IMPLEMENT_LHASH_DOALL_ARG_CONST(MEM, MEM_LEAK);
-
-int CRYPTO_mem_leaks(BIO *b)
-{
-    MEM_LEAK ml;
-
-    /*
-     * OPENSSL_cleanup() will free the ex_data locks so we can't have any
-     * ex_data hanging around
-     */
-    bio_free_ex_data(b);
-
-    /* Ensure all resources are released */
-    OPENSSL_cleanup();
-
-    CRYPTO_THREAD_run_once(&memdbg_init, do_memdbg_init);
-
-    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-
-    ml.bio = b;
-    ml.bytes = 0;
-    ml.chunks = 0;
-    if (mh != NULL)
-        lh_MEM_doall_MEM_LEAK(mh, print_leak, &ml);
-
-    if (ml.chunks != 0) {
-        BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks);
-    } 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.)
-         */
-        int old_mh_mode;
-
-        CRYPTO_THREAD_write_lock(malloc_lock);
-
-        /*
-         * avoid deadlock when lh_free() uses CRYPTO_mem_debug_free(), which uses
-         * mem_check_on
-         */
-        old_mh_mode = mh_mode;
-        mh_mode = CRYPTO_MEM_CHECK_OFF;
-
-        lh_MEM_free(mh);
-        mh = NULL;
-
-        mh_mode = old_mh_mode;
-        CRYPTO_THREAD_unlock(malloc_lock);
-    }
-    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF);
-
-    /* Clean up locks etc */
-    CRYPTO_THREAD_cleanup_local(&appinfokey);
-    CRYPTO_THREAD_lock_free(malloc_lock);
-    CRYPTO_THREAD_lock_free(long_malloc_lock);
-    malloc_lock = NULL;
-    long_malloc_lock = NULL;
-
-    return ml.chunks == 0 ? 1 : 0;
-}
-
-# ifndef OPENSSL_NO_STDIO
-int CRYPTO_mem_leaks_fp(FILE *fp)
-{
-    BIO *b;
-    int ret;
-
-    /*
-     * 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!!
-     */
-    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
-    b = BIO_new(BIO_s_file());
-    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
-    if (b == NULL)
-        return -1;
-    BIO_set_fp(b, fp, BIO_NOCLOSE);
-    ret = CRYPTO_mem_leaks(b);
-    BIO_free(b);
-    return ret;
-}
-# endif
-
-#endif