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-rw-r--r--crypto/mem_dbg.c730
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diff --git a/crypto/mem_dbg.c b/crypto/mem_dbg.c
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--- a/crypto/mem_dbg.c
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-/* 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) */
-
-
-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) */
-
-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 long disabling_thread = 0;
-
-int CRYPTO_mem_ctrl(int mode)
- {
- int ret=mh_mode;
-
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- switch (mode)
- {
- /* for applications: */
- case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
- mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE;
- disabling_thread = 0;
- break;
- case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
- mh_mode = 0;
- disabling_thread = 0;
- break;
-
- /* switch off temporarily (for library-internal use): */
- case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
- if (mh_mode & CRYPTO_MEM_CHECK_ON)
- {
- mh_mode&= ~CRYPTO_MEM_CHECK_ENABLE;
- if (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);
- disabling_thread=CRYPTO_thread_id();
- }
- }
- break;
- case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
- if (mh_mode & CRYPTO_MEM_CHECK_ON)
- {
- mh_mode|=CRYPTO_MEM_CHECK_ENABLE;
- if (disabling_thread != 0)
- {
- disabling_thread=0;
- 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_w_lock(CRYPTO_LOCK_MALLOC);
-
- ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
- && disabling_thread != CRYPTO_thread_id();
-
- CRYPTO_w_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)
- {
- return((char *)a->addr - (char *)b->addr);
- }
-
-static unsigned long mem_hash(MEM *a)
- {
- unsigned long ret;
-
- ret=(unsigned long)a->addr;
-
- ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
- return(ret);
- }
-
-static int app_info_cmp(APP_INFO *a, APP_INFO *b)
- {
- return(a->thread != b->thread);
- }
-
-static unsigned long app_info_hash(APP_INFO *a)
- {
- unsigned long ret;
-
- ret=(unsigned long)a->thread;
-
- ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
- return(ret);
- }
-
-static APP_INFO *pop_info()
- {
- 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
- 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(); /* obtains CRYPTO_LOCK_MALLOC2 */
-
- 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
- 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(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
-
- return(ret);
- }
-
-int CRYPTO_pop_info(void)
- {
- int ret=0;
-
- if (is_MemCheck_on()) /* _must_ be true, or something went severely wrong */
- {
- MemCheck_off(); /* obtains CRYPTO_LOCK_MALLOC2 */
-
- ret=(pop_info() != NULL);
-
- MemCheck_on(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
- return(ret);
- }
-
-int CRYPTO_remove_all_info(void)
- {
- int ret=0;
-
- if (is_MemCheck_on()) /* _must_ be true */
- {
- MemCheck_off(); /* obtains CRYPTO_LOCK_MALLOC2 */
-
- while(pop_info() != NULL)
- ret++;
-
- MemCheck_on(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
- 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(); /* obtains CRYPTO_LOCK_MALLOC2 */
- if ((m=(MEM *)OPENSSL_malloc(sizeof(MEM))) == NULL)
- {
- OPENSSL_free(addr);
- MemCheck_on(); /* releases CRYPTO_LOCK_MALLOC2 */
- 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
- fprintf(stderr, "LEVITTE_DEBUG: [%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(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
- 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();
-
- m.addr=addr;
- mp=(MEM *)lh_delete(mh,(char *)&m);
- if (mp != NULL)
- {
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: [%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(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
- 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
- fprintf(stderr, "LEVITTE_DEBUG: --> 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(); /* obtains CRYPTO_LOCK_MALLOC2 */
-
- m.addr=addr1;
- mp=(MEM *)lh_delete(mh,(char *)&m);
- if (mp != NULL)
- {
-#ifdef LEVITTE_DEBUG
- fprintf(stderr, "LEVITTE_DEBUG: [%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(); /* releases CRYPTO_LOCK_MALLOC2 */
- }
- break;
- }
- return;
- }
-
-
-typedef struct mem_leak_st
- {
- BIO *bio;
- int chunks;
- long bytes;
- } MEM_LEAK;
-
-static void print_leak(MEM *m, MEM_LEAK *l)
- {
- char buf[1024];
- char *bufp = buf;
- APP_INFO *amip;
- int ami_cnt;
- struct tm *lcl = NULL;
- unsigned long ti;
-
- if(m->addr == (char *)l->bio)
- return;
-
- if (options & V_CRYPTO_MDEBUG_TIME)
- {
- lcl = localtime(&m->time);
-
- sprintf(bufp, "[%02d:%02d:%02d] ",
- lcl->tm_hour,lcl->tm_min,lcl->tm_sec);
- bufp += strlen(bufp);
- }
-
- sprintf(bufp, "%5lu file=%s, line=%d, ",
- m->order,m->file,m->line);
- bufp += strlen(bufp);
-
- if (options & V_CRYPTO_MDEBUG_THREAD)
- {
- sprintf(bufp, "thread=%lu, ", m->thread);
- bufp += strlen(bufp);
- }
-
- sprintf(bufp, "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);
- sprintf(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
- {
- strcpy(buf + buf_len, amip->info);
- buf_len = strlen(buf);
- }
- sprintf(buf + buf_len, "\"\n");
-
- BIO_puts(l->bio,buf);
-
- amip = amip->next;
- }
- while(amip && amip->thread == ti);
-
-#ifdef LEVITTE_DEBUG
- if (amip)
- {
- fprintf(stderr, "Thread switch detected in backtrace!!!!\n");
- abort();
- }
-#endif
- }
-
-void CRYPTO_mem_leaks(BIO *b)
- {
- MEM_LEAK ml;
- char buf[80];
-
- if (mh == NULL && amih == NULL)
- return;
- ml.bio=b;
- ml.bytes=0;
- ml.chunks=0;
- MemCheck_off(); /* obtains CRYPTO_LOCK_MALLOC2 */
- if (mh != NULL)
- lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
- if (ml.chunks != 0)
- {
- sprintf(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.)
- */
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
- if (mh != NULL)
- {
- lh_free(mh);
- mh = NULL;
- }
- if (amih != NULL)
- {
- if (lh_num_items(amih) == 0)
- {
- lh_free(amih);
- amih = NULL;
- }
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
- }
- MemCheck_on(); /* releases CRYPTO_LOCK_MALLOC2 */
-
-#if 0
- lh_stats_bio(mh,b);
- lh_node_stats_bio(mh,b);
- lh_node_usage_stats_bio(mh,b);
-#endif
- }
-
-#ifndef NO_FP_API
-void CRYPTO_mem_leaks_fp(FILE *fp)
- {
- BIO *b;
-
- if (mh == NULL) return;
- if ((b=BIO_new(BIO_s_file())) == NULL)
- 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 */
-static void cb_leak(MEM *m,
- void (**cb)(unsigned long, const char *, int, int, void *))
- {
- (**cb)(m->order,m->file,m->line,m->num,m->addr);
- }
-
-void CRYPTO_mem_leaks_cb(void (*cb)(unsigned long, const char *, int, int, void *))
- {
- if (mh == NULL) return;
- CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
- lh_doall_arg(mh,(void (*)())cb_leak,(void *)&cb);
- CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
- }
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