intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 670 insertions, 0 deletions

diff --git a/contrib/libs/openssl/crypto/mem_dbg.c b/contrib/libs/openssl/crypto/mem_dbg.c
new file mode 100644
index 0000000000..0489e97adb
--- /dev/null
+++ b/contrib/libs/openssl/crypto/mem_dbg.c
@@ -0,0 +1,670 @@
+/*
+ * Copyright 1995-2018 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 "internal/thread_once.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;
+CRYPTO_RWLOCK *memdbg_lock;
+static CRYPTO_RWLOCK *long_memdbg_lock;
+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
+};
+
+/*
+ * hash-table of memory requests (address as * key); access requires
+ * long_memdbg_lock lock
+ */
+static LHASH_OF(MEM) *mh = NULL;
+
+/* 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_memdbg_lock is locked exactly in this
+ * case (by the thread named in disabling_thread).
+ */
+static CRYPTO_THREAD_ID disabling_threadid;
+
+DEFINE_RUN_ONCE_STATIC(do_memdbg_init)
+{
+    memdbg_lock = CRYPTO_THREAD_lock_new();
+    long_memdbg_lock = CRYPTO_THREAD_lock_new();
+    if (memdbg_lock == NULL || long_memdbg_lock == NULL
+        || !CRYPTO_THREAD_init_local(&appinfokey, NULL)) {
+        CRYPTO_THREAD_lock_free(memdbg_lock);
+        memdbg_lock = NULL;
+        CRYPTO_THREAD_lock_free(long_memdbg_lock);
+        long_memdbg_lock = NULL;
+        return 0;
+    }
+    return 1;
+}
+
+static void app_info_free(APP_INFO *inf)
+{
+    if (inf == NULL)
+        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;
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return -1;
+
+    CRYPTO_THREAD_write_lock(memdbg_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_memdbg_lock already */
+            if (!num_disable
+                || !CRYPTO_THREAD_compare_id(disabling_threadid, cur)) {
+                /*
+                 * Long-time lock long_memdbg_lock must not be claimed
+                 * while we're holding memdbg_lock, or we'll deadlock
+                 * if somebody else holds long_memdbg_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(memdbg_lock);
+                /*
+                 * Note that after we have waited for long_memdbg_lock and
+                 * memdbg_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_memdbg_lock);
+                CRYPTO_THREAD_write_lock(memdbg_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_memdbg_lock);
+                }
+            }
+        }
+        break;
+    }
+    CRYPTO_THREAD_unlock(memdbg_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) {
+        if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+            return 0;
+
+        cur = CRYPTO_THREAD_get_current_id();
+        CRYPTO_THREAD_read_lock(memdbg_lock);
+
+        ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
+            || !CRYPTO_THREAD_compare_id(disabling_threadid, cur);
+
+        CRYPTO_THREAD_unlock(memdbg_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;
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return 0;
+
+    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);
+
+        if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
+            || (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);
+
+            if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
+                || (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 {
+    int (*print_cb) (const char *str, size_t len, void *u);
+    void *print_cb_arg;
+    int chunks;
+    long bytes;
+} MEM_LEAK;
+
+static void print_leak(const MEM *m, MEM_LEAK *l)
+{
+    char buf[1024];
+    char *bufp = buf;
+    size_t len = sizeof(buf), ami_cnt;
+    APP_INFO *amip;
+    int n;
+    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;
+
+    lcl = localtime(&m->time);
+    n = BIO_snprintf(bufp, len, "[%02d:%02d:%02d] ",
+                     lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
+    if (n <= 0) {
+        bufp[0] = '\0';
+        return;
+    }
+    bufp += n;
+    len -= n;
+
+    n = BIO_snprintf(bufp, len, "%5lu file=%s, line=%d, ",
+                     m->order, m->file, m->line);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    tid.ltid = 0;
+    tid.tid = m->threadid;
+    n = BIO_snprintf(bufp, len, "thread=%lu, ", tid.ltid);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    n = BIO_snprintf(bufp, len, "number=%d, address=%p\n", m->num, m->addr);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    l->print_cb(buf, (size_t)(bufp - buf), l->print_cb_arg);
+
+    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++;
+            if (ami_cnt >= sizeof(buf) - 1)
+                break;
+            memset(buf, '>', ami_cnt);
+            buf[ami_cnt] = '\0';
+            tid.ltid = 0;
+            tid.tid = amip->threadid;
+            n = BIO_snprintf(buf + ami_cnt, sizeof(buf) - ami_cnt,
+                             " thread=%lu, file=%s, line=%d, info=\"",
+                             tid.ltid, amip->file, amip->line);
+            if (n <= 0)
+                break;
+            buf_len = ami_cnt + n;
+            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 {
+                n = BIO_snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s",
+                                 amip->info);
+                if (n < 0)
+                    break;
+                buf_len += n;
+            }
+            n = BIO_snprintf(buf + buf_len, sizeof(buf) - buf_len, "\"\n");
+            if (n <= 0)
+                break;
+
+            l->print_cb(buf, buf_len + n, l->print_cb_arg);
+
+            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_cb(int (*cb) (const char *str, size_t len, void *u),
+                        void *u)
+{
+    MEM_LEAK ml;
+
+    /* Ensure all resources are released */
+    OPENSSL_cleanup();
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return -1;
+
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+    ml.print_cb = cb;
+    ml.print_cb_arg = u;
+    ml.bytes = 0;
+    ml.chunks = 0;
+    if (mh != NULL)
+        lh_MEM_doall_MEM_LEAK(mh, print_leak, &ml);
+
+    if (ml.chunks != 0) {
+        char buf[256];
+
+        BIO_snprintf(buf, sizeof(buf), "%ld bytes leaked in %d chunks\n",
+                     ml.bytes, ml.chunks);
+        cb(buf, strlen(buf), u);
+    } 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(memdbg_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(memdbg_lock);
+    }
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF);
+
+    /* Clean up locks etc */
+    CRYPTO_THREAD_cleanup_local(&appinfokey);
+    CRYPTO_THREAD_lock_free(memdbg_lock);
+    CRYPTO_THREAD_lock_free(long_memdbg_lock);
+    memdbg_lock = NULL;
+    long_memdbg_lock = NULL;
+
+    return ml.chunks == 0 ? 1 : 0;
+}
+
+static int print_bio(const char *str, size_t len, void *b)
+{
+    return BIO_write((BIO *)b, str, len);
+}
+
+int CRYPTO_mem_leaks(BIO *b)
+{
+    /*
+     * OPENSSL_cleanup() will free the ex_data locks so we can't have any
+     * ex_data hanging around
+     */
+    bio_free_ex_data(b);
+
+    return CRYPTO_mem_leaks_cb(print_bio, b);
+}
+
+# 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_cb(print_bio, b);
+    BIO_free(b);
+    return ret;
+}
+# endif
+
+#endif