diff options
Diffstat (limited to 'openssl/trunk/crypto/mem_dbg.c')
| -rw-r--r-- | openssl/trunk/crypto/mem_dbg.c | 795 |
1 files changed, 0 insertions, 795 deletions
diff --git a/openssl/trunk/crypto/mem_dbg.c b/openssl/trunk/crypto/mem_dbg.c deleted file mode 100644 index 83164852..00000000 --- a/openssl/trunk/crypto/mem_dbg.c +++ /dev/null @@ -1,795 +0,0 @@ -/* 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 "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 */ -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 void app_info_free(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). - */ - -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) - { - 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) - { -#ifdef _WIN64 - const char *a=(const char *)((const MEM *)a_void)->addr, - *b=(const char *)((const MEM *)b_void)->addr; - if (a==b) return 0; - else if (a>b) return 1; - else return -1; -#else - return((const char *)((const MEM *)a_void)->addr - - (const char *)((const MEM *)b_void)->addr); -#endif - } - -/* 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) - 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=(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); - - 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, ", m->thread); - 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; - ti=amip->thread; - - 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=\"", - 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 - { - 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 && 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; - - 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) - { - 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.) - * - * 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); - } |